diff --git a/Godeps/Godeps.json b/Godeps/Godeps.json index d5c41227dc..1ec29b1dc1 100644 --- a/Godeps/Godeps.json +++ b/Godeps/Godeps.json @@ -114,6 +114,30 @@ "ImportPath": "golang.org/x/text/transform", "Rev": "c93e7c9fff19fb9139b5ab04ce041833add0134e" }, + { + "ImportPath": "golang.org/x/tools/go/ast/astutil", + "Rev": "69f53eb622e0f41d0e91debd71d6694148b52a30" + }, + { + "ImportPath": "golang.org/x/tools/go/buildutil", + "Rev": "69f53eb622e0f41d0e91debd71d6694148b52a30" + }, + { + "ImportPath": "golang.org/x/tools/go/exact", + "Rev": "69f53eb622e0f41d0e91debd71d6694148b52a30" + }, + { + "ImportPath": "golang.org/x/tools/go/loader", + "Rev": "69f53eb622e0f41d0e91debd71d6694148b52a30" + }, + { + "ImportPath": "golang.org/x/tools/go/types", + "Rev": "69f53eb622e0f41d0e91debd71d6694148b52a30" + }, + { + "ImportPath": "golang.org/x/tools/imports", + "Rev": "69f53eb622e0f41d0e91debd71d6694148b52a30" + }, { "ImportPath": "gopkg.in/check.v1", "Rev": "64131543e7896d5bcc6bd5a76287eb75ea96c673" diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/ast/astutil/enclosing.go b/Godeps/_workspace/src/golang.org/x/tools/go/ast/astutil/enclosing.go new file mode 100644 index 0000000000..2de739efad --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/ast/astutil/enclosing.go @@ -0,0 +1,625 @@ +// Copyright 2013 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package astutil + +// This file defines utilities for working with source positions. + +import ( + "fmt" + "go/ast" + "go/token" + "sort" +) + +// PathEnclosingInterval returns the node that encloses the source +// interval [start, end), and all its ancestors up to the AST root. +// +// The definition of "enclosing" used by this function considers +// additional whitespace abutting a node to be enclosed by it. +// In this example: +// +// z := x + y // add them +// <-A-> +// <----B-----> +// +// the ast.BinaryExpr(+) node is considered to enclose interval B +// even though its [Pos()..End()) is actually only interval A. +// This behaviour makes user interfaces more tolerant of imperfect +// input. +// +// This function treats tokens as nodes, though they are not included +// in the result. e.g. PathEnclosingInterval("+") returns the +// enclosing ast.BinaryExpr("x + y"). +// +// If start==end, the 1-char interval following start is used instead. +// +// The 'exact' result is true if the interval contains only path[0] +// and perhaps some adjacent whitespace. It is false if the interval +// overlaps multiple children of path[0], or if it contains only +// interior whitespace of path[0]. +// In this example: +// +// z := x + y // add them +// <--C--> <---E--> +// ^ +// D +// +// intervals C, D and E are inexact. C is contained by the +// z-assignment statement, because it spans three of its children (:=, +// x, +). So too is the 1-char interval D, because it contains only +// interior whitespace of the assignment. E is considered interior +// whitespace of the BlockStmt containing the assignment. +// +// Precondition: [start, end) both lie within the same file as root. +// TODO(adonovan): return (nil, false) in this case and remove precond. +// Requires FileSet; see loader.tokenFileContainsPos. +// +// Postcondition: path is never nil; it always contains at least 'root'. +// +func PathEnclosingInterval(root *ast.File, start, end token.Pos) (path []ast.Node, exact bool) { + // fmt.Printf("EnclosingInterval %d %d\n", start, end) // debugging + + // Precondition: node.[Pos..End) and adjoining whitespace contain [start, end). + var visit func(node ast.Node) bool + visit = func(node ast.Node) bool { + path = append(path, node) + + nodePos := node.Pos() + nodeEnd := node.End() + + // fmt.Printf("visit(%T, %d, %d)\n", node, nodePos, nodeEnd) // debugging + + // Intersect [start, end) with interval of node. + if start < nodePos { + start = nodePos + } + if end > nodeEnd { + end = nodeEnd + } + + // Find sole child that contains [start, end). + children := childrenOf(node) + l := len(children) + for i, child := range children { + // [childPos, childEnd) is unaugmented interval of child. + childPos := child.Pos() + childEnd := child.End() + + // [augPos, augEnd) is whitespace-augmented interval of child. + augPos := childPos + augEnd := childEnd + if i > 0 { + augPos = children[i-1].End() // start of preceding whitespace + } + if i < l-1 { + nextChildPos := children[i+1].Pos() + // Does [start, end) lie between child and next child? + if start >= augEnd && end <= nextChildPos { + return false // inexact match + } + augEnd = nextChildPos // end of following whitespace + } + + // fmt.Printf("\tchild %d: [%d..%d)\tcontains interval [%d..%d)?\n", + // i, augPos, augEnd, start, end) // debugging + + // Does augmented child strictly contain [start, end)? + if augPos <= start && end <= augEnd { + _, isToken := child.(tokenNode) + return isToken || visit(child) + } + + // Does [start, end) overlap multiple children? + // i.e. left-augmented child contains start + // but LR-augmented child does not contain end. + if start < childEnd && end > augEnd { + break + } + } + + // No single child contained [start, end), + // so node is the result. Is it exact? + + // (It's tempting to put this condition before the + // child loop, but it gives the wrong result in the + // case where a node (e.g. ExprStmt) and its sole + // child have equal intervals.) + if start == nodePos && end == nodeEnd { + return true // exact match + } + + return false // inexact: overlaps multiple children + } + + if start > end { + start, end = end, start + } + + if start < root.End() && end > root.Pos() { + if start == end { + end = start + 1 // empty interval => interval of size 1 + } + exact = visit(root) + + // Reverse the path: + for i, l := 0, len(path); i < l/2; i++ { + path[i], path[l-1-i] = path[l-1-i], path[i] + } + } else { + // Selection lies within whitespace preceding the + // first (or following the last) declaration in the file. + // The result nonetheless always includes the ast.File. + path = append(path, root) + } + + return +} + +// tokenNode is a dummy implementation of ast.Node for a single token. +// They are used transiently by PathEnclosingInterval but never escape +// this package. +// +type tokenNode struct { + pos token.Pos + end token.Pos +} + +func (n tokenNode) Pos() token.Pos { + return n.pos +} + +func (n tokenNode) End() token.Pos { + return n.end +} + +func tok(pos token.Pos, len int) ast.Node { + return tokenNode{pos, pos + token.Pos(len)} +} + +// childrenOf returns the direct non-nil children of ast.Node n. +// It may include fake ast.Node implementations for bare tokens. +// it is not safe to call (e.g.) ast.Walk on such nodes. +// +func childrenOf(n ast.Node) []ast.Node { + var children []ast.Node + + // First add nodes for all true subtrees. + ast.Inspect(n, func(node ast.Node) bool { + if node == n { // push n + return true // recur + } + if node != nil { // push child + children = append(children, node) + } + return false // no recursion + }) + + // Then add fake Nodes for bare tokens. + switch n := n.(type) { + case *ast.ArrayType: + children = append(children, + tok(n.Lbrack, len("[")), + tok(n.Elt.End(), len("]"))) + + case *ast.AssignStmt: + children = append(children, + tok(n.TokPos, len(n.Tok.String()))) + + case *ast.BasicLit: + children = append(children, + tok(n.ValuePos, len(n.Value))) + + case *ast.BinaryExpr: + children = append(children, tok(n.OpPos, len(n.Op.String()))) + + case *ast.BlockStmt: + children = append(children, + tok(n.Lbrace, len("{")), + tok(n.Rbrace, len("}"))) + + case *ast.BranchStmt: + children = append(children, + tok(n.TokPos, len(n.Tok.String()))) + + case *ast.CallExpr: + children = append(children, + tok(n.Lparen, len("(")), + tok(n.Rparen, len(")"))) + if n.Ellipsis != 0 { + children = append(children, tok(n.Ellipsis, len("..."))) + } + + case *ast.CaseClause: + if n.List == nil { + children = append(children, + tok(n.Case, len("default"))) + } else { + children = append(children, + tok(n.Case, len("case"))) + } + children = append(children, tok(n.Colon, len(":"))) + + case *ast.ChanType: + switch n.Dir { + case ast.RECV: + children = append(children, tok(n.Begin, len("<-chan"))) + case ast.SEND: + children = append(children, tok(n.Begin, len("chan<-"))) + case ast.RECV | ast.SEND: + children = append(children, tok(n.Begin, len("chan"))) + } + + case *ast.CommClause: + if n.Comm == nil { + children = append(children, + tok(n.Case, len("default"))) + } else { + children = append(children, + tok(n.Case, len("case"))) + } + children = append(children, tok(n.Colon, len(":"))) + + case *ast.Comment: + // nop + + case *ast.CommentGroup: + // nop + + case *ast.CompositeLit: + children = append(children, + tok(n.Lbrace, len("{")), + tok(n.Rbrace, len("{"))) + + case *ast.DeclStmt: + // nop + + case *ast.DeferStmt: + children = append(children, + tok(n.Defer, len("defer"))) + + case *ast.Ellipsis: + children = append(children, + tok(n.Ellipsis, len("..."))) + + case *ast.EmptyStmt: + // nop + + case *ast.ExprStmt: + // nop + + case *ast.Field: + // TODO(adonovan): Field.{Doc,Comment,Tag}? + + case *ast.FieldList: + children = append(children, + tok(n.Opening, len("(")), + tok(n.Closing, len(")"))) + + case *ast.File: + // TODO test: Doc + children = append(children, + tok(n.Package, len("package"))) + + case *ast.ForStmt: + children = append(children, + tok(n.For, len("for"))) + + case *ast.FuncDecl: + // TODO(adonovan): FuncDecl.Comment? + + // Uniquely, FuncDecl breaks the invariant that + // preorder traversal yields tokens in lexical order: + // in fact, FuncDecl.Recv precedes FuncDecl.Type.Func. + // + // As a workaround, we inline the case for FuncType + // here and order things correctly. + // + children = nil // discard ast.Walk(FuncDecl) info subtrees + children = append(children, tok(n.Type.Func, len("func"))) + if n.Recv != nil { + children = append(children, n.Recv) + } + children = append(children, n.Name) + if n.Type.Params != nil { + children = append(children, n.Type.Params) + } + if n.Type.Results != nil { + children = append(children, n.Type.Results) + } + if n.Body != nil { + children = append(children, n.Body) + } + + case *ast.FuncLit: + // nop + + case *ast.FuncType: + if n.Func != 0 { + children = append(children, + tok(n.Func, len("func"))) + } + + case *ast.GenDecl: + children = append(children, + tok(n.TokPos, len(n.Tok.String()))) + if n.Lparen != 0 { + children = append(children, + tok(n.Lparen, len("(")), + tok(n.Rparen, len(")"))) + } + + case *ast.GoStmt: + children = append(children, + tok(n.Go, len("go"))) + + case *ast.Ident: + children = append(children, + tok(n.NamePos, len(n.Name))) + + case *ast.IfStmt: + children = append(children, + tok(n.If, len("if"))) + + case *ast.ImportSpec: + // TODO(adonovan): ImportSpec.{Doc,EndPos}? + + case *ast.IncDecStmt: + children = append(children, + tok(n.TokPos, len(n.Tok.String()))) + + case *ast.IndexExpr: + children = append(children, + tok(n.Lbrack, len("{")), + tok(n.Rbrack, len("}"))) + + case *ast.InterfaceType: + children = append(children, + tok(n.Interface, len("interface"))) + + case *ast.KeyValueExpr: + children = append(children, + tok(n.Colon, len(":"))) + + case *ast.LabeledStmt: + children = append(children, + tok(n.Colon, len(":"))) + + case *ast.MapType: + children = append(children, + tok(n.Map, len("map"))) + + case *ast.ParenExpr: + children = append(children, + tok(n.Lparen, len("(")), + tok(n.Rparen, len(")"))) + + case *ast.RangeStmt: + children = append(children, + tok(n.For, len("for")), + tok(n.TokPos, len(n.Tok.String()))) + + case *ast.ReturnStmt: + children = append(children, + tok(n.Return, len("return"))) + + case *ast.SelectStmt: + children = append(children, + tok(n.Select, len("select"))) + + case *ast.SelectorExpr: + // nop + + case *ast.SendStmt: + children = append(children, + tok(n.Arrow, len("<-"))) + + case *ast.SliceExpr: + children = append(children, + tok(n.Lbrack, len("[")), + tok(n.Rbrack, len("]"))) + + case *ast.StarExpr: + children = append(children, tok(n.Star, len("*"))) + + case *ast.StructType: + children = append(children, tok(n.Struct, len("struct"))) + + case *ast.SwitchStmt: + children = append(children, tok(n.Switch, len("switch"))) + + case *ast.TypeAssertExpr: + children = append(children, + tok(n.Lparen-1, len(".")), + tok(n.Lparen, len("(")), + tok(n.Rparen, len(")"))) + + case *ast.TypeSpec: + // TODO(adonovan): TypeSpec.{Doc,Comment}? + + case *ast.TypeSwitchStmt: + children = append(children, tok(n.Switch, len("switch"))) + + case *ast.UnaryExpr: + children = append(children, tok(n.OpPos, len(n.Op.String()))) + + case *ast.ValueSpec: + // TODO(adonovan): ValueSpec.{Doc,Comment}? + + default: + // Includes *ast.BadDecl, *ast.BadExpr, *ast.BadStmt. + panic(fmt.Sprintf("unexpected node type %T", n)) + } + + // TODO(adonovan): opt: merge the logic of ast.Inspect() into + // the switch above so we can make interleaved callbacks for + // both Nodes and Tokens in the right order and avoid the need + // to sort. + sort.Sort(byPos(children)) + + return children +} + +type byPos []ast.Node + +func (sl byPos) Len() int { + return len(sl) +} +func (sl byPos) Less(i, j int) bool { + return sl[i].Pos() < sl[j].Pos() +} +func (sl byPos) Swap(i, j int) { + sl[i], sl[j] = sl[j], sl[i] +} + +// NodeDescription returns a description of the concrete type of n suitable +// for a user interface. +// +// TODO(adonovan): in some cases (e.g. Field, FieldList, Ident, +// StarExpr) we could be much more specific given the path to the AST +// root. Perhaps we should do that. +// +func NodeDescription(n ast.Node) string { + switch n := n.(type) { + case *ast.ArrayType: + return "array type" + case *ast.AssignStmt: + return "assignment" + case *ast.BadDecl: + return "bad declaration" + case *ast.BadExpr: + return "bad expression" + case *ast.BadStmt: + return "bad statement" + case *ast.BasicLit: + return "basic literal" + case *ast.BinaryExpr: + return fmt.Sprintf("binary %s operation", n.Op) + case *ast.BlockStmt: + return "block" + case *ast.BranchStmt: + switch n.Tok { + case token.BREAK: + return "break statement" + case token.CONTINUE: + return "continue statement" + case token.GOTO: + return "goto statement" + case token.FALLTHROUGH: + return "fall-through statement" + } + case *ast.CallExpr: + return "function call (or conversion)" + case *ast.CaseClause: + return "case clause" + case *ast.ChanType: + return "channel type" + case *ast.CommClause: + return "communication clause" + case *ast.Comment: + return "comment" + case *ast.CommentGroup: + return "comment group" + case *ast.CompositeLit: + return "composite literal" + case *ast.DeclStmt: + return NodeDescription(n.Decl) + " statement" + case *ast.DeferStmt: + return "defer statement" + case *ast.Ellipsis: + return "ellipsis" + case *ast.EmptyStmt: + return "empty statement" + case *ast.ExprStmt: + return "expression statement" + case *ast.Field: + // Can be any of these: + // struct {x, y int} -- struct field(s) + // struct {T} -- anon struct field + // interface {I} -- interface embedding + // interface {f()} -- interface method + // func (A) func(B) C -- receiver, param(s), result(s) + return "field/method/parameter" + case *ast.FieldList: + return "field/method/parameter list" + case *ast.File: + return "source file" + case *ast.ForStmt: + return "for loop" + case *ast.FuncDecl: + return "function declaration" + case *ast.FuncLit: + return "function literal" + case *ast.FuncType: + return "function type" + case *ast.GenDecl: + switch n.Tok { + case token.IMPORT: + return "import declaration" + case token.CONST: + return "constant declaration" + case token.TYPE: + return "type declaration" + case token.VAR: + return "variable declaration" + } + case *ast.GoStmt: + return "go statement" + case *ast.Ident: + return "identifier" + case *ast.IfStmt: + return "if statement" + case *ast.ImportSpec: + return "import specification" + case *ast.IncDecStmt: + if n.Tok == token.INC { + return "increment statement" + } + return "decrement statement" + case *ast.IndexExpr: + return "index expression" + case *ast.InterfaceType: + return "interface type" + case *ast.KeyValueExpr: + return "key/value association" + case *ast.LabeledStmt: + return "statement label" + case *ast.MapType: + return "map type" + case *ast.Package: + return "package" + case *ast.ParenExpr: + return "parenthesized " + NodeDescription(n.X) + case *ast.RangeStmt: + return "range loop" + case *ast.ReturnStmt: + return "return statement" + case *ast.SelectStmt: + return "select statement" + case *ast.SelectorExpr: + return "selector" + case *ast.SendStmt: + return "channel send" + case *ast.SliceExpr: + return "slice expression" + case *ast.StarExpr: + return "*-operation" // load/store expr or pointer type + case *ast.StructType: + return "struct type" + case *ast.SwitchStmt: + return "switch statement" + case *ast.TypeAssertExpr: + return "type assertion" + case *ast.TypeSpec: + return "type specification" + case *ast.TypeSwitchStmt: + return "type switch" + case *ast.UnaryExpr: + return fmt.Sprintf("unary %s operation", n.Op) + case *ast.ValueSpec: + return "value specification" + + } + panic(fmt.Sprintf("unexpected node type: %T", n)) +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/ast/astutil/enclosing_test.go b/Godeps/_workspace/src/golang.org/x/tools/go/ast/astutil/enclosing_test.go new file mode 100644 index 0000000000..107f87c55c --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/ast/astutil/enclosing_test.go @@ -0,0 +1,195 @@ +// Copyright 2013 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package astutil_test + +// This file defines tests of PathEnclosingInterval. + +// TODO(adonovan): exhaustive tests that run over the whole input +// tree, not just handcrafted examples. + +import ( + "bytes" + "fmt" + "go/ast" + "go/parser" + "go/token" + "strings" + "testing" + + "golang.org/x/tools/go/ast/astutil" +) + +// pathToString returns a string containing the concrete types of the +// nodes in path. +func pathToString(path []ast.Node) string { + var buf bytes.Buffer + fmt.Fprint(&buf, "[") + for i, n := range path { + if i > 0 { + fmt.Fprint(&buf, " ") + } + fmt.Fprint(&buf, strings.TrimPrefix(fmt.Sprintf("%T", n), "*ast.")) + } + fmt.Fprint(&buf, "]") + return buf.String() +} + +// findInterval parses input and returns the [start, end) positions of +// the first occurrence of substr in input. f==nil indicates failure; +// an error has already been reported in that case. +// +func findInterval(t *testing.T, fset *token.FileSet, input, substr string) (f *ast.File, start, end token.Pos) { + f, err := parser.ParseFile(fset, "", input, 0) + if err != nil { + t.Errorf("parse error: %s", err) + return + } + + i := strings.Index(input, substr) + if i < 0 { + t.Errorf("%q is not a substring of input", substr) + f = nil + return + } + + filePos := fset.File(f.Package) + return f, filePos.Pos(i), filePos.Pos(i + len(substr)) +} + +// Common input for following tests. +const input = ` +// Hello. +package main +import "fmt" +func f() {} +func main() { + z := (x + y) // add them + f() // NB: ExprStmt and its CallExpr have same Pos/End +} +` + +func TestPathEnclosingInterval_Exact(t *testing.T) { + // For the exact tests, we check that a substring is mapped to + // the canonical string for the node it denotes. + tests := []struct { + substr string // first occurrence of this string indicates interval + node string // complete text of expected containing node + }{ + {"package", + input[11 : len(input)-1]}, + {"\npack", + input[11 : len(input)-1]}, + {"main", + "main"}, + {"import", + "import \"fmt\""}, + {"\"fmt\"", + "\"fmt\""}, + {"\nfunc f() {}\n", + "func f() {}"}, + {"x ", + "x"}, + {" y", + "y"}, + {"z", + "z"}, + {" + ", + "x + y"}, + {" :=", + "z := (x + y)"}, + {"x + y", + "x + y"}, + {"(x + y)", + "(x + y)"}, + {" (x + y) ", + "(x + y)"}, + {" (x + y) // add", + "(x + y)"}, + {"func", + "func f() {}"}, + {"func f() {}", + "func f() {}"}, + {"\nfun", + "func f() {}"}, + {" f", + "f"}, + } + for _, test := range tests { + f, start, end := findInterval(t, new(token.FileSet), input, test.substr) + if f == nil { + continue + } + + path, exact := astutil.PathEnclosingInterval(f, start, end) + if !exact { + t.Errorf("PathEnclosingInterval(%q) not exact", test.substr) + continue + } + + if len(path) == 0 { + if test.node != "" { + t.Errorf("PathEnclosingInterval(%q).path: got [], want %q", + test.substr, test.node) + } + continue + } + + if got := input[path[0].Pos():path[0].End()]; got != test.node { + t.Errorf("PathEnclosingInterval(%q): got %q, want %q (path was %s)", + test.substr, got, test.node, pathToString(path)) + continue + } + } +} + +func TestPathEnclosingInterval_Paths(t *testing.T) { + // For these tests, we check only the path of the enclosing + // node, but not its complete text because it's often quite + // large when !exact. + tests := []struct { + substr string // first occurrence of this string indicates interval + path string // the pathToString(),exact of the expected path + }{ + {"// add", + "[BlockStmt FuncDecl File],false"}, + {"(x + y", + "[ParenExpr AssignStmt BlockStmt FuncDecl File],false"}, + {"x +", + "[BinaryExpr ParenExpr AssignStmt BlockStmt FuncDecl File],false"}, + {"z := (x", + "[AssignStmt BlockStmt FuncDecl File],false"}, + {"func f", + "[FuncDecl File],false"}, + {"func f()", + "[FuncDecl File],false"}, + {" f()", + "[FuncDecl File],false"}, + {"() {}", + "[FuncDecl File],false"}, + {"// Hello", + "[File],false"}, + {" f", + "[Ident FuncDecl File],true"}, + {"func ", + "[FuncDecl File],true"}, + {"mai", + "[Ident File],true"}, + {"f() // NB", + "[CallExpr ExprStmt BlockStmt FuncDecl File],true"}, + } + for _, test := range tests { + f, start, end := findInterval(t, new(token.FileSet), input, test.substr) + if f == nil { + continue + } + + path, exact := astutil.PathEnclosingInterval(f, start, end) + if got := fmt.Sprintf("%s,%v", pathToString(path), exact); got != test.path { + t.Errorf("PathEnclosingInterval(%q): got %q, want %q", + test.substr, got, test.path) + continue + } + } +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/ast/astutil/imports.go b/Godeps/_workspace/src/golang.org/x/tools/go/ast/astutil/imports.go new file mode 100644 index 0000000000..29d6d36e5f --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/ast/astutil/imports.go @@ -0,0 +1,359 @@ +// Copyright 2013 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// Package astutil contains common utilities for working with the Go AST. +package astutil + +import ( + "fmt" + "go/ast" + "go/token" + "strconv" + "strings" +) + +// AddImport adds the import path to the file f, if absent. +func AddImport(fset *token.FileSet, f *ast.File, ipath string) (added bool) { + return AddNamedImport(fset, f, "", ipath) +} + +// AddNamedImport adds the import path to the file f, if absent. +// If name is not empty, it is used to rename the import. +// +// For example, calling +// AddNamedImport(fset, f, "pathpkg", "path") +// adds +// import pathpkg "path" +func AddNamedImport(fset *token.FileSet, f *ast.File, name, ipath string) (added bool) { + if imports(f, ipath) { + return false + } + + newImport := &ast.ImportSpec{ + Path: &ast.BasicLit{ + Kind: token.STRING, + Value: strconv.Quote(ipath), + }, + } + if name != "" { + newImport.Name = &ast.Ident{Name: name} + } + + // Find an import decl to add to. + // The goal is to find an existing import + // whose import path has the longest shared + // prefix with ipath. + var ( + bestMatch = -1 // length of longest shared prefix + lastImport = -1 // index in f.Decls of the file's final import decl + impDecl *ast.GenDecl // import decl containing the best match + impIndex = -1 // spec index in impDecl containing the best match + ) + for i, decl := range f.Decls { + gen, ok := decl.(*ast.GenDecl) + if ok && gen.Tok == token.IMPORT { + lastImport = i + // Do not add to import "C", to avoid disrupting the + // association with its doc comment, breaking cgo. + if declImports(gen, "C") { + continue + } + + // Match an empty import decl if that's all that is available. + if len(gen.Specs) == 0 && bestMatch == -1 { + impDecl = gen + } + + // Compute longest shared prefix with imports in this group. + for j, spec := range gen.Specs { + impspec := spec.(*ast.ImportSpec) + n := matchLen(importPath(impspec), ipath) + if n > bestMatch { + bestMatch = n + impDecl = gen + impIndex = j + } + } + } + } + + // If no import decl found, add one after the last import. + if impDecl == nil { + impDecl = &ast.GenDecl{ + Tok: token.IMPORT, + } + if lastImport >= 0 { + impDecl.TokPos = f.Decls[lastImport].End() + } else { + // There are no existing imports. + // Our new import goes after the package declaration and after + // the comment, if any, that starts on the same line as the + // package declaration. + impDecl.TokPos = f.Package + + file := fset.File(f.Package) + pkgLine := file.Line(f.Package) + for _, c := range f.Comments { + if file.Line(c.Pos()) > pkgLine { + break + } + impDecl.TokPos = c.End() + } + } + f.Decls = append(f.Decls, nil) + copy(f.Decls[lastImport+2:], f.Decls[lastImport+1:]) + f.Decls[lastImport+1] = impDecl + } + + // Insert new import at insertAt. + insertAt := 0 + if impIndex >= 0 { + // insert after the found import + insertAt = impIndex + 1 + } + impDecl.Specs = append(impDecl.Specs, nil) + copy(impDecl.Specs[insertAt+1:], impDecl.Specs[insertAt:]) + impDecl.Specs[insertAt] = newImport + pos := impDecl.Pos() + if insertAt > 0 { + // Assign same position as the previous import, + // so that the sorter sees it as being in the same block. + pos = impDecl.Specs[insertAt-1].Pos() + } + if newImport.Name != nil { + newImport.Name.NamePos = pos + } + newImport.Path.ValuePos = pos + newImport.EndPos = pos + + // Clean up parens. impDecl contains at least one spec. + if len(impDecl.Specs) == 1 { + // Remove unneeded parens. + impDecl.Lparen = token.NoPos + } else if !impDecl.Lparen.IsValid() { + // impDecl needs parens added. + impDecl.Lparen = impDecl.Specs[0].Pos() + } + + f.Imports = append(f.Imports, newImport) + return true +} + +// DeleteImport deletes the import path from the file f, if present. +func DeleteImport(fset *token.FileSet, f *ast.File, path string) (deleted bool) { + var delspecs []*ast.ImportSpec + + // Find the import nodes that import path, if any. + for i := 0; i < len(f.Decls); i++ { + decl := f.Decls[i] + gen, ok := decl.(*ast.GenDecl) + if !ok || gen.Tok != token.IMPORT { + continue + } + for j := 0; j < len(gen.Specs); j++ { + spec := gen.Specs[j] + impspec := spec.(*ast.ImportSpec) + if importPath(impspec) != path { + continue + } + + // We found an import spec that imports path. + // Delete it. + delspecs = append(delspecs, impspec) + deleted = true + copy(gen.Specs[j:], gen.Specs[j+1:]) + gen.Specs = gen.Specs[:len(gen.Specs)-1] + + // If this was the last import spec in this decl, + // delete the decl, too. + if len(gen.Specs) == 0 { + copy(f.Decls[i:], f.Decls[i+1:]) + f.Decls = f.Decls[:len(f.Decls)-1] + i-- + break + } else if len(gen.Specs) == 1 { + gen.Lparen = token.NoPos // drop parens + } + if j > 0 { + lastImpspec := gen.Specs[j-1].(*ast.ImportSpec) + lastLine := fset.Position(lastImpspec.Path.ValuePos).Line + line := fset.Position(impspec.Path.ValuePos).Line + + // We deleted an entry but now there may be + // a blank line-sized hole where the import was. + if line-lastLine > 1 { + // There was a blank line immediately preceding the deleted import, + // so there's no need to close the hole. + // Do nothing. + } else { + // There was no blank line. Close the hole. + fset.File(gen.Rparen).MergeLine(line) + } + } + j-- + } + } + + // Delete them from f.Imports. + for i := 0; i < len(f.Imports); i++ { + imp := f.Imports[i] + for j, del := range delspecs { + if imp == del { + copy(f.Imports[i:], f.Imports[i+1:]) + f.Imports = f.Imports[:len(f.Imports)-1] + copy(delspecs[j:], delspecs[j+1:]) + delspecs = delspecs[:len(delspecs)-1] + i-- + break + } + } + } + + if len(delspecs) > 0 { + panic(fmt.Sprintf("deleted specs from Decls but not Imports: %v", delspecs)) + } + + return +} + +// RewriteImport rewrites any import of path oldPath to path newPath. +func RewriteImport(fset *token.FileSet, f *ast.File, oldPath, newPath string) (rewrote bool) { + for _, imp := range f.Imports { + if importPath(imp) == oldPath { + rewrote = true + // record old End, because the default is to compute + // it using the length of imp.Path.Value. + imp.EndPos = imp.End() + imp.Path.Value = strconv.Quote(newPath) + } + } + return +} + +// UsesImport reports whether a given import is used. +func UsesImport(f *ast.File, path string) (used bool) { + spec := importSpec(f, path) + if spec == nil { + return + } + + name := spec.Name.String() + switch name { + case "": + // If the package name is not explicitly specified, + // make an educated guess. This is not guaranteed to be correct. + lastSlash := strings.LastIndex(path, "/") + if lastSlash == -1 { + name = path + } else { + name = path[lastSlash+1:] + } + case "_", ".": + // Not sure if this import is used - err on the side of caution. + return true + } + + ast.Walk(visitFn(func(n ast.Node) { + sel, ok := n.(*ast.SelectorExpr) + if ok && isTopName(sel.X, name) { + used = true + } + }), f) + + return +} + +type visitFn func(node ast.Node) + +func (fn visitFn) Visit(node ast.Node) ast.Visitor { + fn(node) + return fn +} + +// imports returns true if f imports path. +func imports(f *ast.File, path string) bool { + return importSpec(f, path) != nil +} + +// importSpec returns the import spec if f imports path, +// or nil otherwise. +func importSpec(f *ast.File, path string) *ast.ImportSpec { + for _, s := range f.Imports { + if importPath(s) == path { + return s + } + } + return nil +} + +// importPath returns the unquoted import path of s, +// or "" if the path is not properly quoted. +func importPath(s *ast.ImportSpec) string { + t, err := strconv.Unquote(s.Path.Value) + if err == nil { + return t + } + return "" +} + +// declImports reports whether gen contains an import of path. +func declImports(gen *ast.GenDecl, path string) bool { + if gen.Tok != token.IMPORT { + return false + } + for _, spec := range gen.Specs { + impspec := spec.(*ast.ImportSpec) + if importPath(impspec) == path { + return true + } + } + return false +} + +// matchLen returns the length of the longest path segment prefix shared by x and y. +func matchLen(x, y string) int { + n := 0 + for i := 0; i < len(x) && i < len(y) && x[i] == y[i]; i++ { + if x[i] == '/' { + n++ + } + } + return n +} + +// isTopName returns true if n is a top-level unresolved identifier with the given name. +func isTopName(n ast.Expr, name string) bool { + id, ok := n.(*ast.Ident) + return ok && id.Name == name && id.Obj == nil +} + +// Imports returns the file imports grouped by paragraph. +func Imports(fset *token.FileSet, f *ast.File) [][]*ast.ImportSpec { + var groups [][]*ast.ImportSpec + + for _, decl := range f.Decls { + genDecl, ok := decl.(*ast.GenDecl) + if !ok || genDecl.Tok != token.IMPORT { + break + } + + group := []*ast.ImportSpec{} + + var lastLine int + for _, spec := range genDecl.Specs { + importSpec := spec.(*ast.ImportSpec) + pos := importSpec.Path.ValuePos + line := fset.Position(pos).Line + if lastLine > 0 && pos > 0 && line-lastLine > 1 { + groups = append(groups, group) + group = []*ast.ImportSpec{} + } + group = append(group, importSpec) + lastLine = line + } + groups = append(groups, group) + } + + return groups +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/ast/astutil/imports_test.go b/Godeps/_workspace/src/golang.org/x/tools/go/ast/astutil/imports_test.go new file mode 100644 index 0000000000..9134b193c4 --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/ast/astutil/imports_test.go @@ -0,0 +1,946 @@ +// Copyright 2013 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package astutil + +import ( + "bytes" + "go/ast" + "go/format" + "go/parser" + "go/token" + "reflect" + "strconv" + "testing" +) + +var fset = token.NewFileSet() + +func parse(t *testing.T, name, in string) *ast.File { + file, err := parser.ParseFile(fset, name, in, parser.ParseComments) + if err != nil { + t.Fatalf("%s parse: %v", name, err) + } + return file +} + +func print(t *testing.T, name string, f *ast.File) string { + var buf bytes.Buffer + if err := format.Node(&buf, fset, f); err != nil { + t.Fatalf("%s gofmt: %v", name, err) + } + return string(buf.Bytes()) +} + +type test struct { + name string + renamedPkg string + pkg string + in string + out string + broken bool // known broken +} + +var addTests = []test{ + { + name: "leave os alone", + pkg: "os", + in: `package main + +import ( + "os" +) +`, + out: `package main + +import ( + "os" +) +`, + }, + { + name: "import.1", + pkg: "os", + in: `package main +`, + out: `package main + +import "os" +`, + }, + { + name: "import.2", + pkg: "os", + in: `package main + +// Comment +import "C" +`, + out: `package main + +// Comment +import "C" +import "os" +`, + }, + { + name: "import.3", + pkg: "os", + in: `package main + +// Comment +import "C" + +import ( + "io" + "utf8" +) +`, + out: `package main + +// Comment +import "C" + +import ( + "io" + "os" + "utf8" +) +`, + }, + { + name: "import.17", + pkg: "x/y/z", + in: `package main + +// Comment +import "C" + +import ( + "a" + "b" + + "x/w" + + "d/f" +) +`, + out: `package main + +// Comment +import "C" + +import ( + "a" + "b" + + "x/w" + "x/y/z" + + "d/f" +) +`, + }, + { + name: "import into singular group", + pkg: "bytes", + in: `package main + +import "os" + +`, + out: `package main + +import ( + "bytes" + "os" +) +`, + }, + { + name: "import into singular group with comment", + pkg: "bytes", + in: `package main + +import /* why */ /* comment here? */ "os" + +`, + out: `package main + +import /* why */ /* comment here? */ ( + "bytes" + "os" +) +`, + }, + { + name: "import into group with leading comment", + pkg: "strings", + in: `package main + +import ( + // comment before bytes + "bytes" + "os" +) + +`, + out: `package main + +import ( + // comment before bytes + "bytes" + "os" + "strings" +) +`, + }, + { + name: "", + renamedPkg: "fmtpkg", + pkg: "fmt", + in: `package main + +import "os" + +`, + out: `package main + +import ( + fmtpkg "fmt" + "os" +) +`, + }, + { + name: "struct comment", + pkg: "time", + in: `package main + +// This is a comment before a struct. +type T struct { + t time.Time +} +`, + out: `package main + +import "time" + +// This is a comment before a struct. +type T struct { + t time.Time +} +`, + }, + { + name: "issue 8729 import C", + pkg: "time", + in: `package main + +import "C" + +// comment +type T time.Time +`, + out: `package main + +import "C" +import "time" + +// comment +type T time.Time +`, + }, + { + name: "issue 8729 empty import", + pkg: "time", + in: `package main + +import () + +// comment +type T time.Time +`, + out: `package main + +import "time" + +// comment +type T time.Time +`, + }, + { + name: "issue 8729 comment on package line", + pkg: "time", + in: `package main // comment + +type T time.Time +`, + out: `package main // comment +import "time" + +type T time.Time +`, + }, + { + name: "issue 8729 comment after package", + pkg: "time", + in: `package main +// comment + +type T time.Time +`, + out: `package main + +import "time" + +// comment + +type T time.Time +`, + }, + { + name: "issue 8729 comment before and on package line", + pkg: "time", + in: `// comment before +package main // comment on + +type T time.Time +`, + out: `// comment before +package main // comment on +import "time" + +type T time.Time +`, + }, + + // Issue 9961: Match prefixes using path segments rather than bytes + { + name: "issue 9961", + pkg: "regexp", + in: `package main + +import ( + "flag" + "testing" + + "rsc.io/p" +) +`, + out: `package main + +import ( + "flag" + "regexp" + "testing" + + "rsc.io/p" +) +`, + }, +} + +func TestAddImport(t *testing.T) { + for _, test := range addTests { + file := parse(t, test.name, test.in) + var before bytes.Buffer + ast.Fprint(&before, fset, file, nil) + AddNamedImport(fset, file, test.renamedPkg, test.pkg) + if got := print(t, test.name, file); got != test.out { + if test.broken { + t.Logf("%s is known broken:\ngot: %s\nwant: %s", test.name, got, test.out) + } else { + t.Errorf("%s:\ngot: %s\nwant: %s", test.name, got, test.out) + } + var after bytes.Buffer + ast.Fprint(&after, fset, file, nil) + + t.Logf("AST before:\n%s\nAST after:\n%s\n", before.String(), after.String()) + } + } +} + +func TestDoubleAddImport(t *testing.T) { + file := parse(t, "doubleimport", "package main\n") + AddImport(fset, file, "os") + AddImport(fset, file, "bytes") + want := `package main + +import ( + "bytes" + "os" +) +` + if got := print(t, "doubleimport", file); got != want { + t.Errorf("got: %s\nwant: %s", got, want) + } +} + +func TestDoubleAddNamedImport(t *testing.T) { + file := parse(t, "doublenamedimport", "package main\n") + AddNamedImport(fset, file, "o", "os") + AddNamedImport(fset, file, "i", "io") + want := `package main + +import ( + i "io" + o "os" +) +` + if got := print(t, "doublenamedimport", file); got != want { + t.Errorf("got: %s\nwant: %s", got, want) + } +} + +// Part of issue 8729. +func TestDoubleAddImportWithDeclComment(t *testing.T) { + file := parse(t, "doubleimport", `package main + +import ( +) + +// comment +type I int +`) + // The AddImport order here matters. + AddImport(fset, file, "golang.org/x/tools/go/ast/astutil") + AddImport(fset, file, "os") + want := `package main + +import ( + "golang.org/x/tools/go/ast/astutil" + "os" +) + +// comment +type I int +` + if got := print(t, "doubleimport_with_decl_comment", file); got != want { + t.Errorf("got: %s\nwant: %s", got, want) + } +} + +var deleteTests = []test{ + { + name: "import.4", + pkg: "os", + in: `package main + +import ( + "os" +) +`, + out: `package main +`, + }, + { + name: "import.5", + pkg: "os", + in: `package main + +// Comment +import "C" +import "os" +`, + out: `package main + +// Comment +import "C" +`, + }, + { + name: "import.6", + pkg: "os", + in: `package main + +// Comment +import "C" + +import ( + "io" + "os" + "utf8" +) +`, + out: `package main + +// Comment +import "C" + +import ( + "io" + "utf8" +) +`, + }, + { + name: "import.7", + pkg: "io", + in: `package main + +import ( + "io" // a + "os" // b + "utf8" // c +) +`, + out: `package main + +import ( + // a + "os" // b + "utf8" // c +) +`, + }, + { + name: "import.8", + pkg: "os", + in: `package main + +import ( + "io" // a + "os" // b + "utf8" // c +) +`, + out: `package main + +import ( + "io" // a + // b + "utf8" // c +) +`, + }, + { + name: "import.9", + pkg: "utf8", + in: `package main + +import ( + "io" // a + "os" // b + "utf8" // c +) +`, + out: `package main + +import ( + "io" // a + "os" // b + // c +) +`, + }, + { + name: "import.10", + pkg: "io", + in: `package main + +import ( + "io" + "os" + "utf8" +) +`, + out: `package main + +import ( + "os" + "utf8" +) +`, + }, + { + name: "import.11", + pkg: "os", + in: `package main + +import ( + "io" + "os" + "utf8" +) +`, + out: `package main + +import ( + "io" + "utf8" +) +`, + }, + { + name: "import.12", + pkg: "utf8", + in: `package main + +import ( + "io" + "os" + "utf8" +) +`, + out: `package main + +import ( + "io" + "os" +) +`, + }, + { + name: "handle.raw.quote.imports", + pkg: "os", + in: "package main\n\nimport `os`", + out: `package main +`, + }, + { + name: "import.13", + pkg: "io", + in: `package main + +import ( + "fmt" + + "io" + "os" + "utf8" + + "go/format" +) +`, + out: `package main + +import ( + "fmt" + + "os" + "utf8" + + "go/format" +) +`, + }, + { + name: "import.14", + pkg: "io", + in: `package main + +import ( + "fmt" // a + + "io" // b + "os" // c + "utf8" // d + + "go/format" // e +) +`, + out: `package main + +import ( + "fmt" // a + + // b + "os" // c + "utf8" // d + + "go/format" // e +) +`, + }, + { + name: "import.15", + pkg: "double", + in: `package main + +import ( + "double" + "double" +) +`, + out: `package main +`, + }, + { + name: "import.16", + pkg: "bubble", + in: `package main + +import ( + "toil" + "bubble" + "bubble" + "trouble" +) +`, + out: `package main + +import ( + "toil" + "trouble" +) +`, + }, + { + name: "import.17", + pkg: "quad", + in: `package main + +import ( + "quad" + "quad" +) + +import ( + "quad" + "quad" +) +`, + out: `package main +`, + }, +} + +func TestDeleteImport(t *testing.T) { + for _, test := range deleteTests { + file := parse(t, test.name, test.in) + DeleteImport(fset, file, test.pkg) + if got := print(t, test.name, file); got != test.out { + t.Errorf("%s:\ngot: %s\nwant: %s", test.name, got, test.out) + } + } +} + +type rewriteTest struct { + name string + srcPkg string + dstPkg string + in string + out string +} + +var rewriteTests = []rewriteTest{ + { + name: "import.13", + srcPkg: "utf8", + dstPkg: "encoding/utf8", + in: `package main + +import ( + "io" + "os" + "utf8" // thanks ken +) +`, + out: `package main + +import ( + "encoding/utf8" // thanks ken + "io" + "os" +) +`, + }, + { + name: "import.14", + srcPkg: "asn1", + dstPkg: "encoding/asn1", + in: `package main + +import ( + "asn1" + "crypto" + "crypto/rsa" + _ "crypto/sha1" + "crypto/x509" + "crypto/x509/pkix" + "time" +) + +var x = 1 +`, + out: `package main + +import ( + "crypto" + "crypto/rsa" + _ "crypto/sha1" + "crypto/x509" + "crypto/x509/pkix" + "encoding/asn1" + "time" +) + +var x = 1 +`, + }, + { + name: "import.15", + srcPkg: "url", + dstPkg: "net/url", + in: `package main + +import ( + "bufio" + "net" + "path" + "url" +) + +var x = 1 // comment on x, not on url +`, + out: `package main + +import ( + "bufio" + "net" + "net/url" + "path" +) + +var x = 1 // comment on x, not on url +`, + }, + { + name: "import.16", + srcPkg: "http", + dstPkg: "net/http", + in: `package main + +import ( + "flag" + "http" + "log" + "text/template" +) + +var addr = flag.String("addr", ":1718", "http service address") // Q=17, R=18 +`, + out: `package main + +import ( + "flag" + "log" + "net/http" + "text/template" +) + +var addr = flag.String("addr", ":1718", "http service address") // Q=17, R=18 +`, + }, +} + +func TestRewriteImport(t *testing.T) { + for _, test := range rewriteTests { + file := parse(t, test.name, test.in) + RewriteImport(fset, file, test.srcPkg, test.dstPkg) + if got := print(t, test.name, file); got != test.out { + t.Errorf("%s:\ngot: %s\nwant: %s", test.name, got, test.out) + } + } +} + +var importsTests = []struct { + name string + in string + want [][]string +}{ + { + name: "no packages", + in: `package foo +`, + want: nil, + }, + { + name: "one group", + in: `package foo + +import ( + "fmt" + "testing" +) +`, + want: [][]string{{"fmt", "testing"}}, + }, + { + name: "four groups", + in: `package foo + +import "C" +import ( + "fmt" + "testing" + + "appengine" + + "myproject/mylib1" + "myproject/mylib2" +) +`, + want: [][]string{ + {"C"}, + {"fmt", "testing"}, + {"appengine"}, + {"myproject/mylib1", "myproject/mylib2"}, + }, + }, + { + name: "multiple factored groups", + in: `package foo + +import ( + "fmt" + "testing" + + "appengine" +) +import ( + "reflect" + + "bytes" +) +`, + want: [][]string{ + {"fmt", "testing"}, + {"appengine"}, + {"reflect"}, + {"bytes"}, + }, + }, +} + +func unquote(s string) string { + res, err := strconv.Unquote(s) + if err != nil { + return "could_not_unquote" + } + return res +} + +func TestImports(t *testing.T) { + fset := token.NewFileSet() + for _, test := range importsTests { + f, err := parser.ParseFile(fset, "test.go", test.in, 0) + if err != nil { + t.Errorf("%s: %v", test.name, err) + continue + } + var got [][]string + for _, group := range Imports(fset, f) { + var b []string + for _, spec := range group { + b = append(b, unquote(spec.Path.Value)) + } + got = append(got, b) + } + if !reflect.DeepEqual(got, test.want) { + t.Errorf("Imports(%s)=%v, want %v", test.name, got, test.want) + } + } +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/ast/astutil/util.go b/Godeps/_workspace/src/golang.org/x/tools/go/ast/astutil/util.go new file mode 100644 index 0000000000..7630629824 --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/ast/astutil/util.go @@ -0,0 +1,14 @@ +package astutil + +import "go/ast" + +// Unparen returns e with any enclosing parentheses stripped. +func Unparen(e ast.Expr) ast.Expr { + for { + p, ok := e.(*ast.ParenExpr) + if !ok { + return e + } + e = p.X + } +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/buildutil/allpackages.go b/Godeps/_workspace/src/golang.org/x/tools/go/buildutil/allpackages.go new file mode 100644 index 0000000000..5ec5b42a33 --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/buildutil/allpackages.go @@ -0,0 +1,123 @@ +// Copyright 2014 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// Package buildutil provides utilities related to the go/build +// package in the standard library. +// +// All I/O is done via the build.Context file system interface, which must +// be concurrency-safe. +package buildutil + +import ( + "go/build" + "os" + "path/filepath" + "sort" + "strings" + "sync" +) + +// AllPackages returns the import path of each Go package in any source +// directory of the specified build context (e.g. $GOROOT or an element +// of $GOPATH). Errors are ignored. The results are sorted. +// +// The result may include import paths for directories that contain no +// *.go files, such as "archive" (in $GOROOT/src). +// +// All I/O is done via the build.Context file system interface, +// which must be concurrency-safe. +// +func AllPackages(ctxt *build.Context) []string { + var list []string + ForEachPackage(ctxt, func(pkg string, _ error) { + list = append(list, pkg) + }) + sort.Strings(list) + return list +} + +// ForEachPackage calls the found function with the import path of +// each Go package it finds in any source directory of the specified +// build context (e.g. $GOROOT or an element of $GOPATH). +// +// If the package directory exists but could not be read, the second +// argument to the found function provides the error. +// +// All I/O is done via the build.Context file system interface, +// which must be concurrency-safe. +// +func ForEachPackage(ctxt *build.Context, found func(importPath string, err error)) { + // We use a counting semaphore to limit + // the number of parallel calls to ReadDir. + sema := make(chan bool, 20) + + ch := make(chan item) + + var wg sync.WaitGroup + for _, root := range ctxt.SrcDirs() { + root := root + wg.Add(1) + go func() { + allPackages(ctxt, sema, root, ch) + wg.Done() + }() + } + go func() { + wg.Wait() + close(ch) + }() + + // All calls to found occur in the caller's goroutine. + for i := range ch { + found(i.importPath, i.err) + } +} + +type item struct { + importPath string + err error // (optional) +} + +func allPackages(ctxt *build.Context, sema chan bool, root string, ch chan<- item) { + root = filepath.Clean(root) + string(os.PathSeparator) + + var wg sync.WaitGroup + + var walkDir func(dir string) + walkDir = func(dir string) { + // Avoid .foo, _foo, and testdata directory trees. + base := filepath.Base(dir) + if base == "" || base[0] == '.' || base[0] == '_' || base == "testdata" { + return + } + + pkg := filepath.ToSlash(strings.TrimPrefix(dir, root)) + + // Prune search if we encounter any of these import paths. + switch pkg { + case "builtin": + return + } + + sema <- true + files, err := ReadDir(ctxt, dir) + <-sema + if pkg != "" || err != nil { + ch <- item{pkg, err} + } + for _, fi := range files { + fi := fi + if fi.IsDir() { + wg.Add(1) + go func() { + walkDir(filepath.Join(dir, fi.Name())) + wg.Done() + }() + } + } + } + + walkDir(root) + wg.Wait() +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/buildutil/allpackages_test.go b/Godeps/_workspace/src/golang.org/x/tools/go/buildutil/allpackages_test.go new file mode 100644 index 0000000000..552ad6c865 --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/buildutil/allpackages_test.go @@ -0,0 +1,32 @@ +// Copyright 2014 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package buildutil_test + +import ( + "go/build" + "testing" + + "golang.org/x/tools/go/buildutil" +) + +func TestAllPackages(t *testing.T) { + all := buildutil.AllPackages(&build.Default) + + set := make(map[string]bool) + for _, pkg := range all { + set[pkg] = true + } + + const wantAtLeast = 250 + if len(all) < wantAtLeast { + t.Errorf("Found only %d packages, want at least %d", len(all), wantAtLeast) + } + + for _, want := range []string{"fmt", "crypto/sha256", "golang.org/x/tools/go/buildutil"} { + if !set[want] { + t.Errorf("Package %q not found; got %s", want, all) + } + } +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/buildutil/fakecontext.go b/Godeps/_workspace/src/golang.org/x/tools/go/buildutil/fakecontext.go new file mode 100644 index 0000000000..24cbcbea2b --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/buildutil/fakecontext.go @@ -0,0 +1,108 @@ +package buildutil + +import ( + "fmt" + "go/build" + "io" + "io/ioutil" + "os" + "path" + "path/filepath" + "sort" + "strings" + "time" +) + +// FakeContext returns a build.Context for the fake file tree specified +// by pkgs, which maps package import paths to a mapping from file base +// names to contents. +// +// The fake Context has a GOROOT of "/go" and no GOPATH, and overrides +// the necessary file access methods to read from memory instead of the +// real file system. +// +// Unlike a real file tree, the fake one has only two levels---packages +// and files---so ReadDir("/go/src/") returns all packages under +// /go/src/ including, for instance, "math" and "math/big". +// ReadDir("/go/src/math/big") would return all the files in the +// "math/big" package. +// +func FakeContext(pkgs map[string]map[string]string) *build.Context { + clean := func(filename string) string { + f := path.Clean(filepath.ToSlash(filename)) + // Removing "/go/src" while respecting segment + // boundaries has this unfortunate corner case: + if f == "/go/src" { + return "" + } + return strings.TrimPrefix(f, "/go/src/") + } + + ctxt := build.Default // copy + ctxt.GOROOT = "/go" + ctxt.GOPATH = "" + ctxt.IsDir = func(dir string) bool { + dir = clean(dir) + if dir == "" { + return true // needed by (*build.Context).SrcDirs + } + return pkgs[dir] != nil + } + ctxt.ReadDir = func(dir string) ([]os.FileInfo, error) { + dir = clean(dir) + var fis []os.FileInfo + if dir == "" { + // enumerate packages + for importPath := range pkgs { + fis = append(fis, fakeDirInfo(importPath)) + } + } else { + // enumerate files of package + for basename := range pkgs[dir] { + fis = append(fis, fakeFileInfo(basename)) + } + } + sort.Sort(byName(fis)) + return fis, nil + } + ctxt.OpenFile = func(filename string) (io.ReadCloser, error) { + filename = clean(filename) + dir, base := path.Split(filename) + content, ok := pkgs[path.Clean(dir)][base] + if !ok { + return nil, fmt.Errorf("file not found: %s", filename) + } + return ioutil.NopCloser(strings.NewReader(content)), nil + } + ctxt.IsAbsPath = func(path string) bool { + path = filepath.ToSlash(path) + // Don't rely on the default (filepath.Path) since on + // Windows, it reports virtual paths as non-absolute. + return strings.HasPrefix(path, "/") + } + return &ctxt +} + +type byName []os.FileInfo + +func (s byName) Len() int { return len(s) } +func (s byName) Swap(i, j int) { s[i], s[j] = s[j], s[i] } +func (s byName) Less(i, j int) bool { return s[i].Name() < s[j].Name() } + +type fakeFileInfo string + +func (fi fakeFileInfo) Name() string { return string(fi) } +func (fakeFileInfo) Sys() interface{} { return nil } +func (fakeFileInfo) ModTime() time.Time { return time.Time{} } +func (fakeFileInfo) IsDir() bool { return false } +func (fakeFileInfo) Size() int64 { return 0 } +func (fakeFileInfo) Mode() os.FileMode { return 0644 } + +type fakeDirInfo string + +func (fd fakeDirInfo) Name() string { return string(fd) } +func (fakeDirInfo) Sys() interface{} { return nil } +func (fakeDirInfo) ModTime() time.Time { return time.Time{} } +func (fakeDirInfo) IsDir() bool { return true } +func (fakeDirInfo) Size() int64 { return 0 } +func (fakeDirInfo) Mode() os.FileMode { return 0755 } diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/buildutil/tags.go b/Godeps/_workspace/src/golang.org/x/tools/go/buildutil/tags.go new file mode 100644 index 0000000000..97350940ea --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/buildutil/tags.go @@ -0,0 +1,73 @@ +package buildutil + +// This logic was copied from stringsFlag from $GOROOT/src/cmd/go/build.go. + +import "fmt" + +const TagsFlagDoc = "a list of `build tags` to consider satisfied during the build. " + + "For more information about build tags, see the description of " + + "build constraints in the documentation for the go/build package" + +// TagsFlag is an implementation of the flag.Value interface that parses +// a flag value in the same manner as go build's -tags flag and +// populates a []string slice. +// +// See $GOROOT/src/go/build/doc.go for description of build tags. +// See $GOROOT/src/cmd/go/doc.go for description of 'go build -tags' flag. +// +// Example: +// flag.Var((*buildutil.TagsFlag)(&build.Default.BuildTags), "tags", buildutil.TagsDoc) +type TagsFlag []string + +func (v *TagsFlag) Set(s string) error { + var err error + *v, err = splitQuotedFields(s) + if *v == nil { + *v = []string{} + } + return err +} + +func splitQuotedFields(s string) ([]string, error) { + // Split fields allowing '' or "" around elements. + // Quotes further inside the string do not count. + var f []string + for len(s) > 0 { + for len(s) > 0 && isSpaceByte(s[0]) { + s = s[1:] + } + if len(s) == 0 { + break + } + // Accepted quoted string. No unescaping inside. + if s[0] == '"' || s[0] == '\'' { + quote := s[0] + s = s[1:] + i := 0 + for i < len(s) && s[i] != quote { + i++ + } + if i >= len(s) { + return nil, fmt.Errorf("unterminated %c string", quote) + } + f = append(f, s[:i]) + s = s[i+1:] + continue + } + i := 0 + for i < len(s) && !isSpaceByte(s[i]) { + i++ + } + f = append(f, s[:i]) + s = s[i:] + } + return f, nil +} + +func (v *TagsFlag) String() string { + return "" +} + +func isSpaceByte(c byte) bool { + return c == ' ' || c == '\t' || c == '\n' || c == '\r' +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/buildutil/tags_test.go b/Godeps/_workspace/src/golang.org/x/tools/go/buildutil/tags_test.go new file mode 100644 index 0000000000..0fc26180a9 --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/buildutil/tags_test.go @@ -0,0 +1,28 @@ +package buildutil_test + +import ( + "flag" + "go/build" + "reflect" + "testing" + + "golang.org/x/tools/go/buildutil" +) + +func TestTags(t *testing.T) { + f := flag.NewFlagSet("TestTags", flag.PanicOnError) + var ctxt build.Context + f.Var((*buildutil.TagsFlag)(&ctxt.BuildTags), "tags", buildutil.TagsFlagDoc) + f.Parse([]string{"-tags", ` 'one'"two" 'three "four"'`, "rest"}) + + // BuildTags + want := []string{"one", "two", "three \"four\""} + if !reflect.DeepEqual(ctxt.BuildTags, want) { + t.Errorf("BuildTags = %q, want %q", ctxt.BuildTags, want) + } + + // Args() + if want := []string{"rest"}; !reflect.DeepEqual(f.Args(), want) { + t.Errorf("f.Args() = %q, want %q", f.Args(), want) + } +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/buildutil/util.go b/Godeps/_workspace/src/golang.org/x/tools/go/buildutil/util.go new file mode 100644 index 0000000000..60eeae2530 --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/buildutil/util.go @@ -0,0 +1,158 @@ +// Copyright 2014 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package buildutil + +import ( + "fmt" + "go/ast" + "go/build" + "go/parser" + "go/token" + "io" + "io/ioutil" + "os" + "path" + "path/filepath" + "strings" +) + +// ParseFile behaves like parser.ParseFile, +// but uses the build context's file system interface, if any. +// +// If file is not absolute (as defined by IsAbsPath), the (dir, file) +// components are joined using JoinPath; dir must be absolute. +// +// The displayPath function, if provided, is used to transform the +// filename that will be attached to the ASTs. +// +// TODO(adonovan): call this from go/loader.parseFiles when the tree thaws. +// +func ParseFile(fset *token.FileSet, ctxt *build.Context, displayPath func(string) string, dir string, file string, mode parser.Mode) (*ast.File, error) { + if !IsAbsPath(ctxt, file) { + file = JoinPath(ctxt, dir, file) + } + rd, err := OpenFile(ctxt, file) + if err != nil { + return nil, err + } + defer rd.Close() // ignore error + if displayPath != nil { + file = displayPath(file) + } + return parser.ParseFile(fset, file, rd, mode) +} + +// ContainingPackage returns the package containing filename. +// +// If filename is not absolute, it is interpreted relative to working directory dir. +// All I/O is via the build context's file system interface, if any. +// +// The '...Files []string' fields of the resulting build.Package are not +// populated (build.FindOnly mode). +// +// TODO(adonovan): call this from oracle when the tree thaws. +// +func ContainingPackage(ctxt *build.Context, dir, filename string) (*build.Package, error) { + if !IsAbsPath(ctxt, filename) { + filename = JoinPath(ctxt, dir, filename) + } + + // We must not assume the file tree uses + // "/" always, + // `\` always, + // or os.PathSeparator (which varies by platform), + // but to make any progress, we are forced to assume that + // paths will not use `\` unless the PathSeparator + // is also `\`, thus we can rely on filepath.ToSlash for some sanity. + + dirSlash := path.Dir(filepath.ToSlash(filename)) + "/" + + // We assume that no source root (GOPATH[i] or GOROOT) contains any other. + for _, srcdir := range ctxt.SrcDirs() { + srcdirSlash := filepath.ToSlash(srcdir) + "/" + if strings.HasPrefix(dirSlash, srcdirSlash) { + importPath := dirSlash[len(srcdirSlash) : len(dirSlash)-len("/")] + return ctxt.Import(importPath, dir, build.FindOnly) + } + } + + return nil, fmt.Errorf("can't find package containing %s", filename) +} + +// -- Effective methods of file system interface ------------------------- + +// (go/build.Context defines these as methods, but does not export them.) + +// TODO(adonovan): HasSubdir? + +// FileExists returns true if the specified file exists, +// using the build context's file system interface. +func FileExists(ctxt *build.Context, path string) bool { + if ctxt.OpenFile != nil { + r, err := ctxt.OpenFile(path) + if err != nil { + return false + } + r.Close() // ignore error + return true + } + _, err := os.Stat(path) + return err == nil +} + +// OpenFile behaves like os.Open, +// but uses the build context's file system interface, if any. +func OpenFile(ctxt *build.Context, path string) (io.ReadCloser, error) { + if ctxt.OpenFile != nil { + return ctxt.OpenFile(path) + } + return os.Open(path) +} + +// IsAbsPath behaves like filepath.IsAbs, +// but uses the build context's file system interface, if any. +func IsAbsPath(ctxt *build.Context, path string) bool { + if ctxt.IsAbsPath != nil { + return ctxt.IsAbsPath(path) + } + return filepath.IsAbs(path) +} + +// JoinPath behaves like filepath.Join, +// but uses the build context's file system interface, if any. +func JoinPath(ctxt *build.Context, path ...string) string { + if ctxt.JoinPath != nil { + return ctxt.JoinPath(path...) + } + return filepath.Join(path...) +} + +// IsDir behaves like os.Stat plus IsDir, +// but uses the build context's file system interface, if any. +func IsDir(ctxt *build.Context, path string) bool { + if ctxt.IsDir != nil { + return ctxt.IsDir(path) + } + fi, err := os.Stat(path) + return err == nil && fi.IsDir() +} + +// ReadDir behaves like ioutil.ReadDir, +// but uses the build context's file system interface, if any. +func ReadDir(ctxt *build.Context, path string) ([]os.FileInfo, error) { + if ctxt.ReadDir != nil { + return ctxt.ReadDir(path) + } + return ioutil.ReadDir(path) +} + +// SplitPathList behaves like filepath.SplitList, +// but uses the build context's file system interface, if any. +func SplitPathList(ctxt *build.Context, s string) []string { + if ctxt.SplitPathList != nil { + return ctxt.SplitPathList(s) + } + return filepath.SplitList(s) +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/buildutil/util_test.go b/Godeps/_workspace/src/golang.org/x/tools/go/buildutil/util_test.go new file mode 100644 index 0000000000..f156829e8b --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/buildutil/util_test.go @@ -0,0 +1,41 @@ +// Copyright 2014 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package buildutil_test + +import ( + "go/build" + "os" + "path/filepath" + "runtime" + "testing" + + "golang.org/x/tools/go/buildutil" +) + +func TestContainingPackage(t *testing.T) { + // unvirtualized: + goroot := runtime.GOROOT() + gopath := filepath.SplitList(os.Getenv("GOPATH"))[0] + + for _, test := range [][2]string{ + {goroot + "/src/fmt/print.go", "fmt"}, + {goroot + "/src/encoding/json/foo.go", "encoding/json"}, + {goroot + "/src/encoding/missing/foo.go", "(not found)"}, + {gopath + "/src/golang.org/x/tools/go/buildutil/util_test.go", + "golang.org/x/tools/go/buildutil"}, + } { + file, want := test[0], test[1] + bp, err := buildutil.ContainingPackage(&build.Default, ".", file) + got := bp.ImportPath + if err != nil { + got = "(not found)" + } + if got != want { + t.Errorf("ContainingPackage(%q) = %s, want %s", file, got, want) + } + } + + // TODO(adonovan): test on virtualized GOPATH too. +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/exact/exact.go b/Godeps/_workspace/src/golang.org/x/tools/go/exact/exact.go new file mode 100644 index 0000000000..e8fbfe974a --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/exact/exact.go @@ -0,0 +1,920 @@ +// Copyright 2013 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// Package exact implements Values representing untyped +// Go constants and the corresponding operations. Values +// and operations have unlimited precision. +// +// A special Unknown value may be used when a value +// is unknown due to an error. Operations on unknown +// values produce unknown values unless specified +// otherwise. +// +package exact + +import ( + "fmt" + "go/token" + "math/big" + "strconv" +) + +// Kind specifies the kind of value represented by a Value. +type Kind int + +// Implementation note: Kinds must be enumerated in +// order of increasing "complexity" (used by match). + +const ( + // unknown values + Unknown Kind = iota + + // non-numeric values + Bool + String + + // numeric values + Int + Float + Complex +) + +// A Value represents a mathematically exact value of a given Kind. +type Value interface { + // Kind returns the value kind; it is always the smallest + // kind in which the value can be represented exactly. + Kind() Kind + + // String returns a human-readable form of the value. + String() string + + // Prevent external implementations. + implementsValue() +} + +// ---------------------------------------------------------------------------- +// Implementations + +type ( + unknownVal struct{} + boolVal bool + stringVal string + int64Val int64 + intVal struct{ val *big.Int } + floatVal struct{ val *big.Rat } + complexVal struct{ re, im *big.Rat } +) + +func (unknownVal) Kind() Kind { return Unknown } +func (boolVal) Kind() Kind { return Bool } +func (stringVal) Kind() Kind { return String } +func (int64Val) Kind() Kind { return Int } +func (intVal) Kind() Kind { return Int } +func (floatVal) Kind() Kind { return Float } +func (complexVal) Kind() Kind { return Complex } + +func (unknownVal) String() string { return "unknown" } +func (x boolVal) String() string { return fmt.Sprintf("%v", bool(x)) } +func (x stringVal) String() string { return strconv.Quote(string(x)) } +func (x int64Val) String() string { return strconv.FormatInt(int64(x), 10) } +func (x intVal) String() string { return x.val.String() } +func (x floatVal) String() string { return x.val.String() } +func (x complexVal) String() string { return fmt.Sprintf("(%s + %si)", x.re, x.im) } + +func (unknownVal) implementsValue() {} +func (boolVal) implementsValue() {} +func (stringVal) implementsValue() {} +func (int64Val) implementsValue() {} +func (intVal) implementsValue() {} +func (floatVal) implementsValue() {} +func (complexVal) implementsValue() {} + +// int64 bounds +var ( + minInt64 = big.NewInt(-1 << 63) + maxInt64 = big.NewInt(1<<63 - 1) +) + +func normInt(x *big.Int) Value { + if minInt64.Cmp(x) <= 0 && x.Cmp(maxInt64) <= 0 { + return int64Val(x.Int64()) + } + return intVal{x} +} + +func normFloat(x *big.Rat) Value { + if x.IsInt() { + return normInt(x.Num()) + } + return floatVal{x} +} + +func normComplex(re, im *big.Rat) Value { + if im.Sign() == 0 { + return normFloat(re) + } + return complexVal{re, im} +} + +// ---------------------------------------------------------------------------- +// Factories + +// MakeUnknown returns the Unknown value. +func MakeUnknown() Value { return unknownVal{} } + +// MakeBool returns the Bool value for x. +func MakeBool(b bool) Value { return boolVal(b) } + +// MakeString returns the String value for x. +func MakeString(s string) Value { return stringVal(s) } + +// MakeInt64 returns the Int value for x. +func MakeInt64(x int64) Value { return int64Val(x) } + +// MakeUint64 returns the Int value for x. +func MakeUint64(x uint64) Value { return normInt(new(big.Int).SetUint64(x)) } + +// MakeFloat64 returns the numeric value for x. +// If x is not finite, the result is unknown. +func MakeFloat64(x float64) Value { + if f := new(big.Rat).SetFloat64(x); f != nil { + return normFloat(f) + } + return unknownVal{} +} + +// MakeFromLiteral returns the corresponding integer, floating-point, +// imaginary, character, or string value for a Go literal string. The +// result is nil if the literal string is invalid. +func MakeFromLiteral(lit string, tok token.Token) Value { + switch tok { + case token.INT: + if x, err := strconv.ParseInt(lit, 0, 64); err == nil { + return int64Val(x) + } + if x, ok := new(big.Int).SetString(lit, 0); ok { + return intVal{x} + } + + case token.FLOAT: + if x, ok := new(big.Rat).SetString(lit); ok { + return normFloat(x) + } + + case token.IMAG: + if n := len(lit); n > 0 && lit[n-1] == 'i' { + if im, ok := new(big.Rat).SetString(lit[0 : n-1]); ok { + return normComplex(big.NewRat(0, 1), im) + } + } + + case token.CHAR: + if n := len(lit); n >= 2 { + if code, _, _, err := strconv.UnquoteChar(lit[1:n-1], '\''); err == nil { + return int64Val(code) + } + } + + case token.STRING: + if s, err := strconv.Unquote(lit); err == nil { + return stringVal(s) + } + } + + return nil +} + +// ---------------------------------------------------------------------------- +// Accessors +// +// For unknown arguments the result is the zero value for the respective +// accessor type, except for Sign, where the result is 1. + +// BoolVal returns the Go boolean value of x, which must be a Bool or an Unknown. +// If x is Unknown, the result is false. +func BoolVal(x Value) bool { + switch x := x.(type) { + case boolVal: + return bool(x) + case unknownVal: + return false + } + panic(fmt.Sprintf("%v not a Bool", x)) +} + +// StringVal returns the Go string value of x, which must be a String or an Unknown. +// If x is Unknown, the result is "". +func StringVal(x Value) string { + switch x := x.(type) { + case stringVal: + return string(x) + case unknownVal: + return "" + } + panic(fmt.Sprintf("%v not a String", x)) +} + +// Int64Val returns the Go int64 value of x and whether the result is exact; +// x must be an Int or an Unknown. If the result is not exact, its value is undefined. +// If x is Unknown, the result is (0, false). +func Int64Val(x Value) (int64, bool) { + switch x := x.(type) { + case int64Val: + return int64(x), true + case intVal: + return x.val.Int64(), x.val.BitLen() <= 63 + case unknownVal: + return 0, false + } + panic(fmt.Sprintf("%v not an Int", x)) +} + +// Uint64Val returns the Go uint64 value of x and whether the result is exact; +// x must be an Int or an Unknown. If the result is not exact, its value is undefined. +// If x is Unknown, the result is (0, false). +func Uint64Val(x Value) (uint64, bool) { + switch x := x.(type) { + case int64Val: + return uint64(x), x >= 0 + case intVal: + return x.val.Uint64(), x.val.Sign() >= 0 && x.val.BitLen() <= 64 + case unknownVal: + return 0, false + } + panic(fmt.Sprintf("%v not an Int", x)) +} + +// Float32Val is like Float64Val but for float32 instead of float64. +func Float32Val(x Value) (float32, bool) { + switch x := x.(type) { + case int64Val: + f := float32(x) + return f, int64Val(f) == x + case intVal: + return ratToFloat32(new(big.Rat).SetFrac(x.val, int1)) + case floatVal: + return ratToFloat32(x.val) + case unknownVal: + return 0, false + } + panic(fmt.Sprintf("%v not a Float", x)) +} + +// Float64Val returns the nearest Go float64 value of x and whether the result is exact; +// x must be numeric but not Complex, or Unknown. For values too small (too close to 0) +// to represent as float64, Float64Val silently underflows to 0. The result sign always +// matches the sign of x, even for 0. +// If x is Unknown, the result is (0, false). +func Float64Val(x Value) (float64, bool) { + switch x := x.(type) { + case int64Val: + f := float64(int64(x)) + return f, int64Val(f) == x + case intVal: + return new(big.Rat).SetFrac(x.val, int1).Float64() + case floatVal: + return x.val.Float64() + case unknownVal: + return 0, false + } + panic(fmt.Sprintf("%v not a Float", x)) +} + +// BitLen returns the number of bits required to represent +// the absolute value x in binary representation; x must be an Int or an Unknown. +// If x is Unknown, the result is 0. +func BitLen(x Value) int { + switch x := x.(type) { + case int64Val: + return new(big.Int).SetInt64(int64(x)).BitLen() + case intVal: + return x.val.BitLen() + case unknownVal: + return 0 + } + panic(fmt.Sprintf("%v not an Int", x)) +} + +// Sign returns -1, 0, or 1 depending on whether x < 0, x == 0, or x > 0; +// x must be numeric or Unknown. For complex values x, the sign is 0 if x == 0, +// otherwise it is != 0. If x is Unknown, the result is 1. +func Sign(x Value) int { + switch x := x.(type) { + case int64Val: + switch { + case x < 0: + return -1 + case x > 0: + return 1 + } + return 0 + case intVal: + return x.val.Sign() + case floatVal: + return x.val.Sign() + case complexVal: + return x.re.Sign() | x.im.Sign() + case unknownVal: + return 1 // avoid spurious division by zero errors + } + panic(fmt.Sprintf("%v not numeric", x)) +} + +// ---------------------------------------------------------------------------- +// Support for serializing/deserializing integers + +const ( + // Compute the size of a Word in bytes. + _m = ^big.Word(0) + _log = _m>>8&1 + _m>>16&1 + _m>>32&1 + wordSize = 1 << _log +) + +// Bytes returns the bytes for the absolute value of x in little- +// endian binary representation; x must be an Int. +func Bytes(x Value) []byte { + var val *big.Int + switch x := x.(type) { + case int64Val: + val = new(big.Int).SetInt64(int64(x)) + case intVal: + val = x.val + default: + panic(fmt.Sprintf("%v not an Int", x)) + } + + words := val.Bits() + bytes := make([]byte, len(words)*wordSize) + + i := 0 + for _, w := range words { + for j := 0; j < wordSize; j++ { + bytes[i] = byte(w) + w >>= 8 + i++ + } + } + // remove leading 0's + for i > 0 && bytes[i-1] == 0 { + i-- + } + + return bytes[:i] +} + +// MakeFromBytes returns the Int value given the bytes of its little-endian +// binary representation. An empty byte slice argument represents 0. +func MakeFromBytes(bytes []byte) Value { + words := make([]big.Word, (len(bytes)+(wordSize-1))/wordSize) + + i := 0 + var w big.Word + var s uint + for _, b := range bytes { + w |= big.Word(b) << s + if s += 8; s == wordSize*8 { + words[i] = w + i++ + w = 0 + s = 0 + } + } + // store last word + if i < len(words) { + words[i] = w + i++ + } + // remove leading 0's + for i > 0 && words[i-1] == 0 { + i-- + } + + return normInt(new(big.Int).SetBits(words[:i])) +} + +// ---------------------------------------------------------------------------- +// Support for disassembling fractions + +// Num returns the numerator of x; x must be Int, Float, or Unknown. +// If x is Unknown, the result is Unknown, otherwise it is an Int +// with the same sign as x. +func Num(x Value) Value { + switch x := x.(type) { + case unknownVal, int64Val, intVal: + return x + case floatVal: + return normInt(x.val.Num()) + } + panic(fmt.Sprintf("%v not Int or Float", x)) +} + +// Denom returns the denominator of x; x must be Int, Float, or Unknown. +// If x is Unknown, the result is Unknown, otherwise it is an Int >= 1. +func Denom(x Value) Value { + switch x := x.(type) { + case unknownVal: + return x + case int64Val, intVal: + return int64Val(1) + case floatVal: + return normInt(x.val.Denom()) + } + panic(fmt.Sprintf("%v not Int or Float", x)) +} + +// ---------------------------------------------------------------------------- +// Support for assembling/disassembling complex numbers + +// MakeImag returns the numeric value x*i (possibly 0); +// x must be Int, Float, or Unknown. +// If x is Unknown, the result is Unknown. +func MakeImag(x Value) Value { + var im *big.Rat + switch x := x.(type) { + case unknownVal: + return x + case int64Val: + im = big.NewRat(int64(x), 1) + case intVal: + im = new(big.Rat).SetFrac(x.val, int1) + case floatVal: + im = x.val + default: + panic(fmt.Sprintf("%v not Int or Float", x)) + } + return normComplex(rat0, im) +} + +// Real returns the real part of x, which must be a numeric or unknown value. +// If x is Unknown, the result is Unknown. +func Real(x Value) Value { + switch x := x.(type) { + case unknownVal, int64Val, intVal, floatVal: + return x + case complexVal: + return normFloat(x.re) + } + panic(fmt.Sprintf("%v not numeric", x)) +} + +// Imag returns the imaginary part of x, which must be a numeric or unknown value. +// If x is Unknown, the result is Unknown. +func Imag(x Value) Value { + switch x := x.(type) { + case unknownVal: + return x + case int64Val, intVal, floatVal: + return int64Val(0) + case complexVal: + return normFloat(x.im) + } + panic(fmt.Sprintf("%v not numeric", x)) +} + +// ---------------------------------------------------------------------------- +// Operations + +// is32bit reports whether x can be represented using 32 bits. +func is32bit(x int64) bool { + const s = 32 + return -1<<(s-1) <= x && x <= 1<<(s-1)-1 +} + +// is63bit reports whether x can be represented using 63 bits. +func is63bit(x int64) bool { + const s = 63 + return -1<<(s-1) <= x && x <= 1<<(s-1)-1 +} + +// UnaryOp returns the result of the unary expression op y. +// The operation must be defined for the operand. +// If size >= 0 it specifies the ^ (xor) result size in bytes. +// If y is Unknown, the result is Unknown. +// +func UnaryOp(op token.Token, y Value, size int) Value { + switch op { + case token.ADD: + switch y.(type) { + case unknownVal, int64Val, intVal, floatVal, complexVal: + return y + } + + case token.SUB: + switch y := y.(type) { + case unknownVal: + return y + case int64Val: + if z := -y; z != y { + return z // no overflow + } + return normInt(new(big.Int).Neg(big.NewInt(int64(y)))) + case intVal: + return normInt(new(big.Int).Neg(y.val)) + case floatVal: + return normFloat(new(big.Rat).Neg(y.val)) + case complexVal: + return normComplex(new(big.Rat).Neg(y.re), new(big.Rat).Neg(y.im)) + } + + case token.XOR: + var z big.Int + switch y := y.(type) { + case unknownVal: + return y + case int64Val: + z.Not(big.NewInt(int64(y))) + case intVal: + z.Not(y.val) + default: + goto Error + } + // For unsigned types, the result will be negative and + // thus "too large": We must limit the result size to + // the type's size. + if size >= 0 { + s := uint(size) * 8 + z.AndNot(&z, new(big.Int).Lsh(big.NewInt(-1), s)) // z &^= (-1)< ord(y) { + y, x = match(y, x) + return x, y + } + // ord(x) <= ord(y) + + switch x := x.(type) { + case unknownVal: + return x, x + + case boolVal, stringVal, complexVal: + return x, y + + case int64Val: + switch y := y.(type) { + case int64Val: + return x, y + case intVal: + return intVal{big.NewInt(int64(x))}, y + case floatVal: + return floatVal{big.NewRat(int64(x), 1)}, y + case complexVal: + return complexVal{big.NewRat(int64(x), 1), rat0}, y + } + + case intVal: + switch y := y.(type) { + case intVal: + return x, y + case floatVal: + return floatVal{new(big.Rat).SetFrac(x.val, int1)}, y + case complexVal: + return complexVal{new(big.Rat).SetFrac(x.val, int1), rat0}, y + } + + case floatVal: + switch y := y.(type) { + case floatVal: + return x, y + case complexVal: + return complexVal{x.val, rat0}, y + } + } + + panic("unreachable") +} + +// BinaryOp returns the result of the binary expression x op y. +// The operation must be defined for the operands. If one of the +// operands is Unknown, the result is Unknown. +// To force integer division of Int operands, use op == token.QUO_ASSIGN +// instead of token.QUO; the result is guaranteed to be Int in this case. +// Division by zero leads to a run-time panic. +// +func BinaryOp(x Value, op token.Token, y Value) Value { + x, y = match(x, y) + + switch x := x.(type) { + case unknownVal: + return x + + case boolVal: + y := y.(boolVal) + switch op { + case token.LAND: + return x && y + case token.LOR: + return x || y + } + + case int64Val: + a := int64(x) + b := int64(y.(int64Val)) + var c int64 + switch op { + case token.ADD: + if !is63bit(a) || !is63bit(b) { + return normInt(new(big.Int).Add(big.NewInt(a), big.NewInt(b))) + } + c = a + b + case token.SUB: + if !is63bit(a) || !is63bit(b) { + return normInt(new(big.Int).Sub(big.NewInt(a), big.NewInt(b))) + } + c = a - b + case token.MUL: + if !is32bit(a) || !is32bit(b) { + return normInt(new(big.Int).Mul(big.NewInt(a), big.NewInt(b))) + } + c = a * b + case token.QUO: + return normFloat(new(big.Rat).SetFrac(big.NewInt(a), big.NewInt(b))) + case token.QUO_ASSIGN: // force integer division + c = a / b + case token.REM: + c = a % b + case token.AND: + c = a & b + case token.OR: + c = a | b + case token.XOR: + c = a ^ b + case token.AND_NOT: + c = a &^ b + default: + goto Error + } + return int64Val(c) + + case intVal: + a := x.val + b := y.(intVal).val + var c big.Int + switch op { + case token.ADD: + c.Add(a, b) + case token.SUB: + c.Sub(a, b) + case token.MUL: + c.Mul(a, b) + case token.QUO: + return normFloat(new(big.Rat).SetFrac(a, b)) + case token.QUO_ASSIGN: // force integer division + c.Quo(a, b) + case token.REM: + c.Rem(a, b) + case token.AND: + c.And(a, b) + case token.OR: + c.Or(a, b) + case token.XOR: + c.Xor(a, b) + case token.AND_NOT: + c.AndNot(a, b) + default: + goto Error + } + return normInt(&c) + + case floatVal: + a := x.val + b := y.(floatVal).val + var c big.Rat + switch op { + case token.ADD: + c.Add(a, b) + case token.SUB: + c.Sub(a, b) + case token.MUL: + c.Mul(a, b) + case token.QUO: + c.Quo(a, b) + default: + goto Error + } + return normFloat(&c) + + case complexVal: + y := y.(complexVal) + a, b := x.re, x.im + c, d := y.re, y.im + var re, im big.Rat + switch op { + case token.ADD: + // (a+c) + i(b+d) + re.Add(a, c) + im.Add(b, d) + case token.SUB: + // (a-c) + i(b-d) + re.Sub(a, c) + im.Sub(b, d) + case token.MUL: + // (ac-bd) + i(bc+ad) + var ac, bd, bc, ad big.Rat + ac.Mul(a, c) + bd.Mul(b, d) + bc.Mul(b, c) + ad.Mul(a, d) + re.Sub(&ac, &bd) + im.Add(&bc, &ad) + case token.QUO: + // (ac+bd)/s + i(bc-ad)/s, with s = cc + dd + var ac, bd, bc, ad, s, cc, dd big.Rat + ac.Mul(a, c) + bd.Mul(b, d) + bc.Mul(b, c) + ad.Mul(a, d) + cc.Mul(c, c) + dd.Mul(d, d) + s.Add(&cc, &dd) + re.Add(&ac, &bd) + re.Quo(&re, &s) + im.Sub(&bc, &ad) + im.Quo(&im, &s) + default: + goto Error + } + return normComplex(&re, &im) + + case stringVal: + if op == token.ADD { + return x + y.(stringVal) + } + } + +Error: + panic(fmt.Sprintf("invalid binary operation %v %s %v", x, op, y)) +} + +// Shift returns the result of the shift expression x op s +// with op == token.SHL or token.SHR (<< or >>). x must be +// an Int or an Unknown. If x is Unknown, the result is x. +// +func Shift(x Value, op token.Token, s uint) Value { + switch x := x.(type) { + case unknownVal: + return x + + case int64Val: + if s == 0 { + return x + } + switch op { + case token.SHL: + z := big.NewInt(int64(x)) + return normInt(z.Lsh(z, s)) + case token.SHR: + return x >> s + } + + case intVal: + if s == 0 { + return x + } + var z big.Int + switch op { + case token.SHL: + return normInt(z.Lsh(x.val, s)) + case token.SHR: + return normInt(z.Rsh(x.val, s)) + } + } + + panic(fmt.Sprintf("invalid shift %v %s %d", x, op, s)) +} + +func cmpZero(x int, op token.Token) bool { + switch op { + case token.EQL: + return x == 0 + case token.NEQ: + return x != 0 + case token.LSS: + return x < 0 + case token.LEQ: + return x <= 0 + case token.GTR: + return x > 0 + case token.GEQ: + return x >= 0 + } + panic("unreachable") +} + +// Compare returns the result of the comparison x op y. +// The comparison must be defined for the operands. +// If one of the operands is Unknown, the result is +// false. +// +func Compare(x Value, op token.Token, y Value) bool { + x, y = match(x, y) + + switch x := x.(type) { + case unknownVal: + return false + + case boolVal: + y := y.(boolVal) + switch op { + case token.EQL: + return x == y + case token.NEQ: + return x != y + } + + case int64Val: + y := y.(int64Val) + switch op { + case token.EQL: + return x == y + case token.NEQ: + return x != y + case token.LSS: + return x < y + case token.LEQ: + return x <= y + case token.GTR: + return x > y + case token.GEQ: + return x >= y + } + + case intVal: + return cmpZero(x.val.Cmp(y.(intVal).val), op) + + case floatVal: + return cmpZero(x.val.Cmp(y.(floatVal).val), op) + + case complexVal: + y := y.(complexVal) + re := x.re.Cmp(y.re) + im := x.im.Cmp(y.im) + switch op { + case token.EQL: + return re == 0 && im == 0 + case token.NEQ: + return re != 0 || im != 0 + } + + case stringVal: + y := y.(stringVal) + switch op { + case token.EQL: + return x == y + case token.NEQ: + return x != y + case token.LSS: + return x < y + case token.LEQ: + return x <= y + case token.GTR: + return x > y + case token.GEQ: + return x >= y + } + } + + panic(fmt.Sprintf("invalid comparison %v %s %v", x, op, y)) +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/exact/exact_test.go b/Godeps/_workspace/src/golang.org/x/tools/go/exact/exact_test.go new file mode 100644 index 0000000000..aa38a896c6 --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/exact/exact_test.go @@ -0,0 +1,375 @@ +// Copyright 2013 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package exact + +import ( + "go/token" + "strings" + "testing" +) + +// TODO(gri) expand this test framework + +var opTests = []string{ + // unary operations + `+ 0 = 0`, + `+ ? = ?`, + `- 1 = -1`, + `- ? = ?`, + `^ 0 = -1`, + `^ ? = ?`, + + `! true = false`, + `! false = true`, + `! ? = ?`, + + // etc. + + // binary operations + `"" + "" = ""`, + `"foo" + "" = "foo"`, + `"" + "bar" = "bar"`, + `"foo" + "bar" = "foobar"`, + + `0 + 0 = 0`, + `0 + 0.1 = 0.1`, + `0 + 0.1i = 0.1i`, + `0.1 + 0.9 = 1`, + `1e100 + 1e100 = 2e100`, + `? + 0 = ?`, + `0 + ? = ?`, + + `0 - 0 = 0`, + `0 - 0.1 = -0.1`, + `0 - 0.1i = -0.1i`, + `1e100 - 1e100 = 0`, + `? - 0 = ?`, + `0 - ? = ?`, + + `0 * 0 = 0`, + `1 * 0.1 = 0.1`, + `1 * 0.1i = 0.1i`, + `1i * 1i = -1`, + `? * 0 = ?`, + `0 * ? = ?`, + + `0 / 0 = "division_by_zero"`, + `10 / 2 = 5`, + `5 / 3 = 5/3`, + `5i / 3i = 5/3`, + `? / 0 = ?`, + `0 / ? = ?`, + + `0 % 0 = "runtime_error:_integer_divide_by_zero"`, // TODO(gri) should be the same as for / + `10 % 3 = 1`, + `? % 0 = ?`, + `0 % ? = ?`, + + `0 & 0 = 0`, + `12345 & 0 = 0`, + `0xff & 0xf = 0xf`, + `? & 0 = ?`, + `0 & ? = ?`, + + `0 | 0 = 0`, + `12345 | 0 = 12345`, + `0xb | 0xa0 = 0xab`, + `? | 0 = ?`, + `0 | ? = ?`, + + `0 ^ 0 = 0`, + `1 ^ -1 = -2`, + `? ^ 0 = ?`, + `0 ^ ? = ?`, + + `0 &^ 0 = 0`, + `0xf &^ 1 = 0xe`, + `1 &^ 0xf = 0`, + // etc. + + // shifts + `0 << 0 = 0`, + `1 << 10 = 1024`, + `0 >> 0 = 0`, + `1024 >> 10 == 1`, + `? << 0 == ?`, + `? >> 10 == ?`, + // etc. + + // comparisons + `false == false = true`, + `false == true = false`, + `true == false = false`, + `true == true = true`, + + `false != false = false`, + `false != true = true`, + `true != false = true`, + `true != true = false`, + + `"foo" == "bar" = false`, + `"foo" != "bar" = true`, + `"foo" < "bar" = false`, + `"foo" <= "bar" = false`, + `"foo" > "bar" = true`, + `"foo" >= "bar" = true`, + + `0 == 0 = true`, + `0 != 0 = false`, + `0 < 10 = true`, + `10 <= 10 = true`, + `0 > 10 = false`, + `10 >= 10 = true`, + + `1/123456789 == 1/123456789 == true`, + `1/123456789 != 1/123456789 == false`, + `1/123456789 < 1/123456788 == true`, + `1/123456788 <= 1/123456789 == false`, + `0.11 > 0.11 = false`, + `0.11 >= 0.11 = true`, + + `? == 0 = false`, + `? != 0 = false`, + `? < 10 = false`, + `? <= 10 = false`, + `? > 10 = false`, + `? >= 10 = false`, + + `0 == ? = false`, + `0 != ? = false`, + `0 < ? = false`, + `10 <= ? = false`, + `0 > ? = false`, + `10 >= ? = false`, + + // etc. +} + +func TestOps(t *testing.T) { + for _, test := range opTests { + a := strings.Split(test, " ") + i := 0 // operator index + + var x, x0 Value + switch len(a) { + case 4: + // unary operation + case 5: + // binary operation + x, x0 = val(a[0]), val(a[0]) + i = 1 + default: + t.Errorf("invalid test case: %s", test) + continue + } + + op, ok := optab[a[i]] + if !ok { + panic("missing optab entry for " + a[i]) + } + + y, y0 := val(a[i+1]), val(a[i+1]) + + got := doOp(x, op, y) + want := val(a[i+3]) + if !eql(got, want) { + t.Errorf("%s: got %s; want %s", test, got, want) + } + if x0 != nil && !eql(x, x0) { + t.Errorf("%s: x changed to %s", test, x) + } + if !eql(y, y0) { + t.Errorf("%s: y changed to %s", test, y) + } + } +} + +func eql(x, y Value) bool { + _, ux := x.(unknownVal) + _, uy := y.(unknownVal) + if ux || uy { + return ux == uy + } + return Compare(x, token.EQL, y) +} + +// ---------------------------------------------------------------------------- +// Support functions + +func val(lit string) Value { + if len(lit) == 0 { + return MakeUnknown() + } + + switch lit { + case "?": + return MakeUnknown() + case "true": + return MakeBool(true) + case "false": + return MakeBool(false) + } + + tok := token.INT + switch first, last := lit[0], lit[len(lit)-1]; { + case first == '"' || first == '`': + tok = token.STRING + lit = strings.Replace(lit, "_", " ", -1) + case first == '\'': + tok = token.CHAR + case last == 'i': + tok = token.IMAG + default: + if !strings.HasPrefix(lit, "0x") && strings.ContainsAny(lit, "./Ee") { + tok = token.FLOAT + } + } + + return MakeFromLiteral(lit, tok) +} + +var optab = map[string]token.Token{ + "!": token.NOT, + + "+": token.ADD, + "-": token.SUB, + "*": token.MUL, + "/": token.QUO, + "%": token.REM, + + "<<": token.SHL, + ">>": token.SHR, + + "&": token.AND, + "|": token.OR, + "^": token.XOR, + "&^": token.AND_NOT, + + "==": token.EQL, + "!=": token.NEQ, + "<": token.LSS, + "<=": token.LEQ, + ">": token.GTR, + ">=": token.GEQ, +} + +func panicHandler(v *Value) { + switch p := recover().(type) { + case nil: + // nothing to do + case string: + *v = MakeString(p) + case error: + *v = MakeString(p.Error()) + default: + panic(p) + } +} + +func doOp(x Value, op token.Token, y Value) (z Value) { + defer panicHandler(&z) + + if x == nil { + return UnaryOp(op, y, -1) + } + + switch op { + case token.EQL, token.NEQ, token.LSS, token.LEQ, token.GTR, token.GEQ: + return MakeBool(Compare(x, op, y)) + case token.SHL, token.SHR: + s, _ := Int64Val(y) + return Shift(x, op, uint(s)) + default: + return BinaryOp(x, op, y) + } +} + +// ---------------------------------------------------------------------------- +// Other tests + +var fracTests = []string{ + "0 0 1", + "1 1 1", + "-1 -1 1", + "1.2 6 5", + "-0.991 -991 1000", + "1e100 1e100 1", +} + +func TestFractions(t *testing.T) { + for _, test := range fracTests { + a := strings.Split(test, " ") + if len(a) != 3 { + t.Errorf("invalid test case: %s", test) + continue + } + + x := val(a[0]) + n := val(a[1]) + d := val(a[2]) + + if got := Num(x); !eql(got, n) { + t.Errorf("%s: got num = %s; want %s", test, got, n) + } + + if got := Denom(x); !eql(got, d) { + t.Errorf("%s: got denom = %s; want %s", test, got, d) + } + } +} + +var bytesTests = []string{ + "0", + "1", + "123456789", + "123456789012345678901234567890123456789012345678901234567890", +} + +func TestBytes(t *testing.T) { + for _, test := range bytesTests { + x := val(test) + bytes := Bytes(x) + + // special case 0 + if Sign(x) == 0 && len(bytes) != 0 { + t.Errorf("%s: got %v; want empty byte slice", test, bytes) + } + + if n := len(bytes); n > 0 && bytes[n-1] == 0 { + t.Errorf("%s: got %v; want no leading 0 byte", test, bytes) + } + + if got := MakeFromBytes(bytes); !eql(got, x) { + t.Errorf("%s: got %s; want %s (bytes = %v)", test, got, x, bytes) + } + } +} + +func TestUnknown(t *testing.T) { + u := MakeUnknown() + var values = []Value{ + u, + MakeBool(false), // token.ADD ok below, operation is never considered + MakeString(""), + MakeInt64(1), + MakeFromLiteral("-1234567890123456789012345678901234567890", token.INT), + MakeFloat64(1.2), + MakeImag(MakeFloat64(1.2)), + } + for _, val := range values { + x, y := val, u + for i := range [2]int{} { + if i == 1 { + x, y = y, x + } + if got := BinaryOp(x, token.ADD, y); got.Kind() != Unknown { + t.Errorf("%s + %s: got %s; want %s", x, y, got, u) + } + if got := Compare(x, token.EQL, y); got { + t.Errorf("%s == %s: got true; want false", x, y) + } + } + } +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/exact/go13.go b/Godeps/_workspace/src/golang.org/x/tools/go/exact/go13.go new file mode 100644 index 0000000000..1016c14150 --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/exact/go13.go @@ -0,0 +1,24 @@ +// Copyright 2014 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// +build !go1.4 + +package exact + +import ( + "math" + "math/big" +) + +func ratToFloat32(x *big.Rat) (float32, bool) { + // Before 1.4, there's no Rat.Float32. + // Emulate it, albeit at the cost of + // imprecision in corner cases. + x64, exact := x.Float64() + x32 := float32(x64) + if math.IsInf(float64(x32), 0) { + exact = false + } + return x32, exact +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/exact/go14.go b/Godeps/_workspace/src/golang.org/x/tools/go/exact/go14.go new file mode 100644 index 0000000000..b86e5d2609 --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/exact/go14.go @@ -0,0 +1,13 @@ +// Copyright 2014 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// +build go1.4 + +package exact + +import "math/big" + +func ratToFloat32(x *big.Rat) (float32, bool) { + return x.Float32() +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/loader/cgo.go b/Godeps/_workspace/src/golang.org/x/tools/go/loader/cgo.go new file mode 100644 index 0000000000..299e72579f --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/loader/cgo.go @@ -0,0 +1,199 @@ +package loader + +// This file handles cgo preprocessing of files containing `import "C"`. +// +// DESIGN +// +// The approach taken is to run the cgo processor on the package's +// CgoFiles and parse the output, faking the filenames of the +// resulting ASTs so that the synthetic file containing the C types is +// called "C" (e.g. "~/go/src/net/C") and the preprocessed files +// have their original names (e.g. "~/go/src/net/cgo_unix.go"), +// not the names of the actual temporary files. +// +// The advantage of this approach is its fidelity to 'go build'. The +// downside is that the token.Position.Offset for each AST node is +// incorrect, being an offset within the temporary file. Line numbers +// should still be correct because of the //line comments. +// +// The logic of this file is mostly plundered from the 'go build' +// tool, which also invokes the cgo preprocessor. +// +// +// REJECTED ALTERNATIVE +// +// An alternative approach that we explored is to extend go/types' +// Importer mechanism to provide the identity of the importing package +// so that each time `import "C"` appears it resolves to a different +// synthetic package containing just the objects needed in that case. +// The loader would invoke cgo but parse only the cgo_types.go file +// defining the package-level objects, discarding the other files +// resulting from preprocessing. +// +// The benefit of this approach would have been that source-level +// syntax information would correspond exactly to the original cgo +// file, with no preprocessing involved, making source tools like +// godoc, oracle, and eg happy. However, the approach was rejected +// due to the additional complexity it would impose on go/types. (It +// made for a beautiful demo, though.) +// +// cgo files, despite their *.go extension, are not legal Go source +// files per the specification since they may refer to unexported +// members of package "C" such as C.int. Also, a function such as +// C.getpwent has in effect two types, one matching its C type and one +// which additionally returns (errno C.int). The cgo preprocessor +// uses name mangling to distinguish these two functions in the +// processed code, but go/types would need to duplicate this logic in +// its handling of function calls, analogous to the treatment of map +// lookups in which y=m[k] and y,ok=m[k] are both legal. + +import ( + "fmt" + "go/ast" + "go/build" + "go/parser" + "go/token" + "io/ioutil" + "log" + "os" + "os/exec" + "path/filepath" + "regexp" + "strings" +) + +// processCgoFiles invokes the cgo preprocessor on bp.CgoFiles, parses +// the output and returns the resulting ASTs. +// +func processCgoFiles(bp *build.Package, fset *token.FileSet, DisplayPath func(path string) string, mode parser.Mode) ([]*ast.File, error) { + tmpdir, err := ioutil.TempDir("", strings.Replace(bp.ImportPath, "/", "_", -1)+"_C") + if err != nil { + return nil, err + } + defer os.RemoveAll(tmpdir) + + pkgdir := bp.Dir + if DisplayPath != nil { + pkgdir = DisplayPath(pkgdir) + } + + cgoFiles, cgoDisplayFiles, err := runCgo(bp, pkgdir, tmpdir) + if err != nil { + return nil, err + } + var files []*ast.File + for i := range cgoFiles { + rd, err := os.Open(cgoFiles[i]) + if err != nil { + return nil, err + } + defer rd.Close() + display := filepath.Join(bp.Dir, cgoDisplayFiles[i]) + f, err := parser.ParseFile(fset, display, rd, mode) + if err != nil { + return nil, err + } + files = append(files, f) + } + return files, nil +} + +var cgoRe = regexp.MustCompile(`[/\\:]`) + +// runCgo invokes the cgo preprocessor on bp.CgoFiles and returns two +// lists of files: the resulting processed files (in temporary +// directory tmpdir) and the corresponding names of the unprocessed files. +// +// runCgo is adapted from (*builder).cgo in +// $GOROOT/src/cmd/go/build.go, but these features are unsupported: +// pkg-config, Objective C, CGOPKGPATH, CGO_FLAGS. +// +func runCgo(bp *build.Package, pkgdir, tmpdir string) (files, displayFiles []string, err error) { + cgoCPPFLAGS, _, _, _ := cflags(bp, true) + _, cgoexeCFLAGS, _, _ := cflags(bp, false) + + if len(bp.CgoPkgConfig) > 0 { + return nil, nil, fmt.Errorf("cgo pkg-config not supported") + } + + // Allows including _cgo_export.h from .[ch] files in the package. + cgoCPPFLAGS = append(cgoCPPFLAGS, "-I", tmpdir) + + // _cgo_gotypes.go (displayed "C") contains the type definitions. + files = append(files, filepath.Join(tmpdir, "_cgo_gotypes.go")) + displayFiles = append(displayFiles, "C") + for _, fn := range bp.CgoFiles { + // "foo.cgo1.go" (displayed "foo.go") is the processed Go source. + f := cgoRe.ReplaceAllString(fn[:len(fn)-len("go")], "_") + files = append(files, filepath.Join(tmpdir, f+"cgo1.go")) + displayFiles = append(displayFiles, fn) + } + + var cgoflags []string + if bp.Goroot && bp.ImportPath == "runtime/cgo" { + cgoflags = append(cgoflags, "-import_runtime_cgo=false") + } + if bp.Goroot && bp.ImportPath == "runtime/race" || bp.ImportPath == "runtime/cgo" { + cgoflags = append(cgoflags, "-import_syscall=false") + } + + args := stringList( + "go", "tool", "cgo", "-objdir", tmpdir, cgoflags, "--", + cgoCPPFLAGS, cgoexeCFLAGS, bp.CgoFiles, + ) + if false { + log.Printf("Running cgo for package %q: %s (dir=%s)", bp.ImportPath, args, pkgdir) + } + cmd := exec.Command(args[0], args[1:]...) + cmd.Dir = pkgdir + cmd.Stdout = os.Stderr + cmd.Stderr = os.Stderr + if err := cmd.Run(); err != nil { + return nil, nil, fmt.Errorf("cgo failed: %s: %s", args, err) + } + + return files, displayFiles, nil +} + +// -- unmodified from 'go build' --------------------------------------- + +// Return the flags to use when invoking the C or C++ compilers, or cgo. +func cflags(p *build.Package, def bool) (cppflags, cflags, cxxflags, ldflags []string) { + var defaults string + if def { + defaults = "-g -O2" + } + + cppflags = stringList(envList("CGO_CPPFLAGS", ""), p.CgoCPPFLAGS) + cflags = stringList(envList("CGO_CFLAGS", defaults), p.CgoCFLAGS) + cxxflags = stringList(envList("CGO_CXXFLAGS", defaults), p.CgoCXXFLAGS) + ldflags = stringList(envList("CGO_LDFLAGS", defaults), p.CgoLDFLAGS) + return +} + +// envList returns the value of the given environment variable broken +// into fields, using the default value when the variable is empty. +func envList(key, def string) []string { + v := os.Getenv(key) + if v == "" { + v = def + } + return strings.Fields(v) +} + +// stringList's arguments should be a sequence of string or []string values. +// stringList flattens them into a single []string. +func stringList(args ...interface{}) []string { + var x []string + for _, arg := range args { + switch arg := arg.(type) { + case []string: + x = append(x, arg...) + case string: + x = append(x, arg) + default: + panic("stringList: invalid argument") + } + } + return x +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/loader/doc.go b/Godeps/_workspace/src/golang.org/x/tools/go/loader/doc.go new file mode 100644 index 0000000000..1ff4b15de9 --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/loader/doc.go @@ -0,0 +1,189 @@ +// Copyright 2015 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// Package loader loads a complete Go program from source code, parsing +// and type-checking the initial packages plus their transitive closure +// of dependencies. The ASTs and the derived facts are retained for +// later use. +// +// THIS INTERFACE IS EXPERIMENTAL AND IS LIKELY TO CHANGE. +// +// The package defines two primary types: Config, which specifies a +// set of initial packages to load and various other options; and +// Program, which is the result of successfully loading the packages +// specified by a configuration. +// +// The configuration can be set directly, but *Config provides various +// convenience methods to simplify the common cases, each of which can +// be called any number of times. Finally, these are followed by a +// call to Load() to actually load and type-check the program. +// +// var conf loader.Config +// +// // Use the command-line arguments to specify +// // a set of initial packages to load from source. +// // See FromArgsUsage for help. +// rest, err := conf.FromArgs(os.Args[1:], wantTests) +// +// // Parse the specified files and create an ad hoc package with path "foo". +// // All files must have the same 'package' declaration. +// conf.CreateFromFilenames("foo", "foo.go", "bar.go") +// +// // Create an ad hoc package with path "foo" from +// // the specified already-parsed files. +// // All ASTs must have the same 'package' declaration. +// conf.CreateFromFiles("foo", parsedFiles) +// +// // Add "runtime" to the set of packages to be loaded. +// conf.Import("runtime") +// +// // Adds "fmt" and "fmt_test" to the set of packages +// // to be loaded. "fmt" will include *_test.go files. +// conf.ImportWithTests("fmt") +// +// // Finally, load all the packages specified by the configuration. +// prog, err := conf.Load() +// +// See examples_test.go for examples of API usage. +// +// +// CONCEPTS AND TERMINOLOGY +// +// An AD HOC package is one specified as a set of source files on the +// command line. In the simplest case, it may consist of a single file +// such as $GOROOT/src/net/http/triv.go. +// +// EXTERNAL TEST packages are those comprised of a set of *_test.go +// files all with the same 'package foo_test' declaration, all in the +// same directory. (go/build.Package calls these files XTestFiles.) +// +// An IMPORTABLE package is one that can be referred to by some import +// spec. The Path() of each importable package is unique within a +// Program. +// +// ad hoc packages and external test packages are NON-IMPORTABLE. The +// Path() of an ad hoc package is inferred from the package +// declarations of its files and is therefore not a unique package key. +// For example, Config.CreatePkgs may specify two initial ad hoc +// packages both called "main". +// +// An AUGMENTED package is an importable package P plus all the +// *_test.go files with same 'package foo' declaration as P. +// (go/build.Package calls these files TestFiles.) +// +// The INITIAL packages are those specified in the configuration. A +// DEPENDENCY is a package loaded to satisfy an import in an initial +// package or another dependency. +// +package loader + +// IMPLEMENTATION NOTES +// +// 'go test', in-package test files, and import cycles +// --------------------------------------------------- +// +// An external test package may depend upon members of the augmented +// package that are not in the unaugmented package, such as functions +// that expose internals. (See bufio/export_test.go for an example.) +// So, the loader must ensure that for each external test package +// it loads, it also augments the corresponding non-test package. +// +// The import graph over n unaugmented packages must be acyclic; the +// import graph over n-1 unaugmented packages plus one augmented +// package must also be acyclic. ('go test' relies on this.) But the +// import graph over n augmented packages may contain cycles. +// +// First, all the (unaugmented) non-test packages and their +// dependencies are imported in the usual way; the loader reports an +// error if it detects an import cycle. +// +// Then, each package P for which testing is desired is augmented by +// the list P' of its in-package test files, by calling +// (*types.Checker).Files. This arrangement ensures that P' may +// reference definitions within P, but P may not reference definitions +// within P'. Furthermore, P' may import any other package, including +// ones that depend upon P, without an import cycle error. +// +// Consider two packages A and B, both of which have lists of +// in-package test files we'll call A' and B', and which have the +// following import graph edges: +// B imports A +// B' imports A +// A' imports B +// This last edge would be expected to create an error were it not +// for the special type-checking discipline above. +// Cycles of size greater than two are possible. For example: +// compress/bzip2/bzip2_test.go (package bzip2) imports "io/ioutil" +// io/ioutil/tempfile_test.go (package ioutil) imports "regexp" +// regexp/exec_test.go (package regexp) imports "compress/bzip2" +// +// +// Concurrency +// ----------- +// +// Let us define the import dependency graph as follows. Each node is a +// list of files passed to (Checker).Files at once. Many of these lists +// are the production code of an importable Go package, so those nodes +// are labelled by the package's import path. The remaining nodes are +// ad hoc packages and lists of in-package *_test.go files that augment +// an importable package; those nodes have no label. +// +// The edges of the graph represent import statements appearing within a +// file. An edge connects a node (a list of files) to the node it +// imports, which is importable and thus always labelled. +// +// Loading is controlled by this dependency graph. +// +// To reduce I/O latency, we start loading a package's dependencies +// asynchronously as soon as we've parsed its files and enumerated its +// imports (scanImports). This performs a preorder traversal of the +// import dependency graph. +// +// To exploit hardware parallelism, we type-check unrelated packages in +// parallel, where "unrelated" means not ordered by the partial order of +// the import dependency graph. +// +// We use a concurrency-safe blocking cache (importer.imported) to +// record the results of type-checking, whether success or failure. An +// entry is created in this cache by startLoad the first time the +// package is imported. The first goroutine to request an entry becomes +// responsible for completing the task and broadcasting completion to +// subsequent requestors, which block until then. +// +// Type checking occurs in (parallel) postorder: we cannot type-check a +// set of files until we have loaded and type-checked all of their +// immediate dependencies (and thus all of their transitive +// dependencies). If the input were guaranteed free of import cycles, +// this would be trivial: we could simply wait for completion of the +// dependencies and then invoke the typechecker. +// +// But as we saw in the 'go test' section above, some cycles in the +// import graph over packages are actually legal, so long as the +// cycle-forming edge originates in the in-package test files that +// augment the package. This explains why the nodes of the import +// dependency graph are not packages, but lists of files: the unlabelled +// nodes avoid the cycles. Consider packages A and B where B imports A +// and A's in-package tests AT import B. The naively constructed import +// graph over packages would contain a cycle (A+AT) --> B --> (A+AT) but +// the graph over lists of files is AT --> B --> A, where AT is an +// unlabelled node. +// +// Awaiting completion of the dependencies in a cyclic graph would +// deadlock, so we must materialize the import dependency graph (as +// importer.graph) and check whether each import edge forms a cycle. If +// x imports y, and the graph already contains a path from y to x, then +// there is an import cycle, in which case the processing of x must not +// wait for the completion of processing of y. +// +// When the type-checker makes a callback (doImport) to the loader for a +// given import edge, there are two possible cases. In the normal case, +// the dependency has already been completely type-checked; doImport +// does a cache lookup and returns it. In the cyclic case, the entry in +// the cache is still necessarily incomplete, indicating a cycle. We +// perform the cycle check again to obtain the error message, and return +// the error. +// +// The result of using concurrency is about a 2.5x speedup for stdlib_test. + +// TODO(adonovan): overhaul the package documentation. diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/loader/example_test.go b/Godeps/_workspace/src/golang.org/x/tools/go/loader/example_test.go new file mode 100644 index 0000000000..9fb5fdcfb2 --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/loader/example_test.go @@ -0,0 +1,170 @@ +// Copyright 2015 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package loader_test + +import ( + "fmt" + "go/token" + "log" + "path/filepath" + "runtime" + "sort" + + "golang.org/x/tools/go/loader" +) + +func printProgram(prog *loader.Program) { + // Created packages are the initial packages specified by a call + // to CreateFromFilenames or CreateFromFiles. + var names []string + for _, info := range prog.Created { + names = append(names, info.Pkg.Path()) + } + fmt.Printf("created: %s\n", names) + + // Imported packages are the initial packages specified by a + // call to Import or ImportWithTests. + names = nil + for _, info := range prog.Imported { + names = append(names, info.Pkg.Path()) + } + sort.Strings(names) + fmt.Printf("imported: %s\n", names) + + // InitialPackages contains the union of created and imported. + names = nil + for _, info := range prog.InitialPackages() { + names = append(names, info.Pkg.Path()) + } + sort.Strings(names) + fmt.Printf("initial: %s\n", names) + + // AllPackages contains all initial packages and their dependencies. + names = nil + for pkg := range prog.AllPackages { + names = append(names, pkg.Path()) + } + sort.Strings(names) + fmt.Printf("all: %s\n", names) +} + +func printFilenames(fset *token.FileSet, info *loader.PackageInfo) { + var names []string + for _, f := range info.Files { + names = append(names, filepath.Base(fset.File(f.Pos()).Name())) + } + fmt.Printf("%s.Files: %s\n", info.Pkg.Path(), names) +} + +// This example loads a set of packages and all of their dependencies +// from a typical command-line. FromArgs parses a command line and +// makes calls to the other methods of Config shown in the examples that +// follow. +func ExampleConfig_FromArgs() { + args := []string{"mytool", "unicode/utf8", "errors", "runtime", "--", "foo", "bar"} + const wantTests = false + + var conf loader.Config + rest, err := conf.FromArgs(args[1:], wantTests) + prog, err := conf.Load() + if err != nil { + log.Fatal(err) + } + + fmt.Printf("rest: %s\n", rest) + printProgram(prog) + // Output: + // rest: [foo bar] + // created: [] + // imported: [errors runtime unicode/utf8] + // initial: [errors runtime unicode/utf8] + // all: [errors runtime unicode/utf8] +} + +// This example creates and type-checks a single package (without tests) +// from a list of filenames, and loads all of its dependencies. +func ExampleConfig_CreateFromFilenames() { + var conf loader.Config + filename := filepath.Join(runtime.GOROOT(), "src/container/heap/heap.go") + conf.CreateFromFilenames("container/heap", filename) + prog, err := conf.Load() + if err != nil { + log.Fatal(err) + } + + printProgram(prog) + // Output: + // created: [container/heap] + // imported: [] + // initial: [container/heap] + // all: [container/heap sort] +} + +// In the examples below, for stability, the chosen packages are +// relatively small, platform-independent, and low-level (and thus +// infrequently changing). +// The strconv package has internal and external tests. + +const hello = `package main + +import "fmt" + +func main() { + fmt.Println("Hello, world.") +} +` + +// This example creates and type-checks a package from a list of +// already-parsed files, and loads all its dependencies. +func ExampleConfig_CreateFromFiles() { + var conf loader.Config + f, err := conf.ParseFile("hello.go", hello) + if err != nil { + log.Fatal(err) + } + conf.CreateFromFiles("hello", f) + prog, err := conf.Load() + if err != nil { + log.Fatal(err) + } + + printProgram(prog) + printFilenames(prog.Fset, prog.Package("strconv")) + // Output: + // created: [hello] + // imported: [] + // initial: [hello] + // all: [errors fmt hello io math os reflect runtime strconv sync sync/atomic syscall time unicode/utf8] + // strconv.Files: [atob.go atof.go atoi.go decimal.go extfloat.go ftoa.go isprint.go itoa.go quote.go] +} + +// This example imports three packages, including the tests for one of +// them, and loads all their dependencies. +func ExampleConfig_Import() { + // ImportWithTest("strconv") causes strconv to include + // internal_test.go, and creates an external test package, + // strconv_test. + // (Compare with the example of CreateFromFiles.) + + var conf loader.Config + conf.Import("unicode/utf8") + conf.Import("errors") + conf.ImportWithTests("strconv") + prog, err := conf.Load() + if err != nil { + log.Fatal(err) + } + + printProgram(prog) + printFilenames(prog.Fset, prog.Package("strconv")) + printFilenames(prog.Fset, prog.Package("strconv_test")) + // Output: + // created: [strconv_test] + // imported: [errors strconv unicode/utf8] + // initial: [errors strconv strconv_test unicode/utf8] + // all: [bufio bytes errors flag fmt io math math/rand os reflect runtime runtime/pprof sort strconv strconv_test strings sync sync/atomic syscall testing text/tabwriter time unicode unicode/utf8] + // strconv.Files: [atob.go atof.go atoi.go decimal.go extfloat.go ftoa.go isprint.go itoa.go quote.go internal_test.go] + // strconv_test.Files: [atob_test.go atof_test.go atoi_test.go decimal_test.go fp_test.go ftoa_test.go itoa_test.go quote_example_test.go quote_test.go strconv_test.go] +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/loader/loader.go b/Godeps/_workspace/src/golang.org/x/tools/go/loader/loader.go new file mode 100644 index 0000000000..5555faacd5 --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/loader/loader.go @@ -0,0 +1,935 @@ +// Copyright 2013 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package loader + +// See doc.go for package documentation and implementation notes. + +import ( + "errors" + "fmt" + "go/ast" + "go/build" + "go/parser" + "go/token" + "os" + "sort" + "strings" + "sync" + "time" + + "golang.org/x/tools/go/ast/astutil" + "golang.org/x/tools/go/types" +) + +const trace = false // show timing info for type-checking + +// Config specifies the configuration for loading a whole program from +// Go source code. +// The zero value for Config is a ready-to-use default configuration. +type Config struct { + // Fset is the file set for the parser to use when loading the + // program. If nil, it may be lazily initialized by any + // method of Config. + Fset *token.FileSet + + // ParserMode specifies the mode to be used by the parser when + // loading source packages. + ParserMode parser.Mode + + // TypeChecker contains options relating to the type checker. + // + // The supplied IgnoreFuncBodies is not used; the effective + // value comes from the TypeCheckFuncBodies func below. + // The supplied Import function is not used either. + TypeChecker types.Config + + // TypeCheckFuncBodies is a predicate over package import + // paths. A package for which the predicate is false will + // have its package-level declarations type checked, but not + // its function bodies; this can be used to quickly load + // dependencies from source. If nil, all func bodies are type + // checked. + TypeCheckFuncBodies func(string) bool + + // If Build is non-nil, it is used to locate source packages. + // Otherwise &build.Default is used. + // + // By default, cgo is invoked to preprocess Go files that + // import the fake package "C". This behaviour can be + // disabled by setting CGO_ENABLED=0 in the environment prior + // to startup, or by setting Build.CgoEnabled=false. + Build *build.Context + + // The current directory, used for resolving relative package + // references such as "./go/loader". If empty, os.Getwd will be + // used instead. + Cwd string + + // If DisplayPath is non-nil, it is used to transform each + // file name obtained from Build.Import(). This can be used + // to prevent a virtualized build.Config's file names from + // leaking into the user interface. + DisplayPath func(path string) string + + // If AllowErrors is true, Load will return a Program even + // if some of the its packages contained I/O, parser or type + // errors; such errors are accessible via PackageInfo.Errors. If + // false, Load will fail if any package had an error. + AllowErrors bool + + // CreatePkgs specifies a list of non-importable initial + // packages to create. The resulting packages will appear in + // the corresponding elements of the Program.Created slice. + CreatePkgs []PkgSpec + + // ImportPkgs specifies a set of initial packages to load from + // source. The map keys are package import paths, used to + // locate the package relative to $GOROOT. + // + // The map value indicates whether to load tests. If true, Load + // will add and type-check two lists of files to the package: + // non-test files followed by in-package *_test.go files. In + // addition, it will append the external test package (if any) + // to Program.Created. + ImportPkgs map[string]bool + + // FindPackage is called during Load to create the build.Package + // for a given import path. If nil, a default implementation + // based on ctxt.Import is used. A client may use this hook to + // adapt to a proprietary build system that does not follow the + // "go build" layout conventions, for example. + // + // It must be safe to call concurrently from multiple goroutines. + FindPackage func(ctxt *build.Context, importPath string) (*build.Package, error) +} + +// A PkgSpec specifies a non-importable package to be created by Load. +// Files are processed first, but typically only one of Files and +// Filenames is provided. The path needn't be globally unique. +// +type PkgSpec struct { + Path string // import path ("" => use package declaration) + Files []*ast.File // ASTs of already-parsed files + Filenames []string // names of files to be parsed +} + +// A Program is a Go program loaded from source as specified by a Config. +type Program struct { + Fset *token.FileSet // the file set for this program + + // Created[i] contains the initial package whose ASTs or + // filenames were supplied by Config.CreatePkgs[i], followed by + // the external test package, if any, of each package in + // Config.ImportPkgs ordered by ImportPath. + Created []*PackageInfo + + // Imported contains the initially imported packages, + // as specified by Config.ImportPkgs. + Imported map[string]*PackageInfo + + // AllPackages contains the PackageInfo of every package + // encountered by Load: all initial packages and all + // dependencies, including incomplete ones. + AllPackages map[*types.Package]*PackageInfo + + // importMap is the canonical mapping of import paths to + // packages. It contains all Imported initial packages, but not + // Created ones, and all imported dependencies. + importMap map[string]*types.Package +} + +// PackageInfo holds the ASTs and facts derived by the type-checker +// for a single package. +// +// Not mutated once exposed via the API. +// +type PackageInfo struct { + Pkg *types.Package + Importable bool // true if 'import "Pkg.Path()"' would resolve to this + TransitivelyErrorFree bool // true if Pkg and all its dependencies are free of errors + Files []*ast.File // syntax trees for the package's files + Errors []error // non-nil if the package had errors + types.Info // type-checker deductions. + + checker *types.Checker // transient type-checker state + errorFunc func(error) +} + +func (info *PackageInfo) String() string { return info.Pkg.Path() } + +func (info *PackageInfo) appendError(err error) { + if info.errorFunc != nil { + info.errorFunc(err) + } else { + fmt.Fprintln(os.Stderr, err) + } + info.Errors = append(info.Errors, err) +} + +func (conf *Config) fset() *token.FileSet { + if conf.Fset == nil { + conf.Fset = token.NewFileSet() + } + return conf.Fset +} + +// ParseFile is a convenience function (intended for testing) that invokes +// the parser using the Config's FileSet, which is initialized if nil. +// +// src specifies the parser input as a string, []byte, or io.Reader, and +// filename is its apparent name. If src is nil, the contents of +// filename are read from the file system. +// +func (conf *Config) ParseFile(filename string, src interface{}) (*ast.File, error) { + // TODO(adonovan): use conf.build() etc like parseFiles does. + return parser.ParseFile(conf.fset(), filename, src, conf.ParserMode) +} + +// FromArgsUsage is a partial usage message that applications calling +// FromArgs may wish to include in their -help output. +const FromArgsUsage = ` + is a list of arguments denoting a set of initial packages. +It may take one of two forms: + +1. A list of *.go source files. + + All of the specified files are loaded, parsed and type-checked + as a single package. All the files must belong to the same directory. + +2. A list of import paths, each denoting a package. + + The package's directory is found relative to the $GOROOT and + $GOPATH using similar logic to 'go build', and the *.go files in + that directory are loaded, parsed and type-checked as a single + package. + + In addition, all *_test.go files in the directory are then loaded + and parsed. Those files whose package declaration equals that of + the non-*_test.go files are included in the primary package. Test + files whose package declaration ends with "_test" are type-checked + as another package, the 'external' test package, so that a single + import path may denote two packages. (Whether this behaviour is + enabled is tool-specific, and may depend on additional flags.) + +A '--' argument terminates the list of packages. +` + +// FromArgs interprets args as a set of initial packages to load from +// source and updates the configuration. It returns the list of +// unconsumed arguments. +// +// It is intended for use in command-line interfaces that require a +// set of initial packages to be specified; see FromArgsUsage message +// for details. +// +// Only superficial errors are reported at this stage; errors dependent +// on I/O are detected during Load. +// +func (conf *Config) FromArgs(args []string, xtest bool) ([]string, error) { + var rest []string + for i, arg := range args { + if arg == "--" { + rest = args[i+1:] + args = args[:i] + break // consume "--" and return the remaining args + } + } + + if len(args) > 0 && strings.HasSuffix(args[0], ".go") { + // Assume args is a list of a *.go files + // denoting a single ad hoc package. + for _, arg := range args { + if !strings.HasSuffix(arg, ".go") { + return nil, fmt.Errorf("named files must be .go files: %s", arg) + } + } + conf.CreateFromFilenames("", args...) + } else { + // Assume args are directories each denoting a + // package and (perhaps) an external test, iff xtest. + for _, arg := range args { + if xtest { + conf.ImportWithTests(arg) + } else { + conf.Import(arg) + } + } + } + + return rest, nil +} + +// CreateFromFilenames is a convenience function that adds +// a conf.CreatePkgs entry to create a package of the specified *.go +// files. +// +func (conf *Config) CreateFromFilenames(path string, filenames ...string) { + conf.CreatePkgs = append(conf.CreatePkgs, PkgSpec{Path: path, Filenames: filenames}) +} + +// CreateFromFiles is a convenience function that adds a conf.CreatePkgs +// entry to create package of the specified path and parsed files. +// +func (conf *Config) CreateFromFiles(path string, files ...*ast.File) { + conf.CreatePkgs = append(conf.CreatePkgs, PkgSpec{Path: path, Files: files}) +} + +// ImportWithTests is a convenience function that adds path to +// ImportPkgs, the set of initial source packages located relative to +// $GOPATH. The package will be augmented by any *_test.go files in +// its directory that contain a "package x" (not "package x_test") +// declaration. +// +// In addition, if any *_test.go files contain a "package x_test" +// declaration, an additional package comprising just those files will +// be added to CreatePkgs. +// +func (conf *Config) ImportWithTests(path string) { conf.addImport(path, true) } + +// Import is a convenience function that adds path to ImportPkgs, the +// set of initial packages that will be imported from source. +// +func (conf *Config) Import(path string) { conf.addImport(path, false) } + +func (conf *Config) addImport(path string, tests bool) { + if path == "C" || path == "unsafe" { + return // ignore; not a real package + } + if conf.ImportPkgs == nil { + conf.ImportPkgs = make(map[string]bool) + } + conf.ImportPkgs[path] = conf.ImportPkgs[path] || tests +} + +// PathEnclosingInterval returns the PackageInfo and ast.Node that +// contain source interval [start, end), and all the node's ancestors +// up to the AST root. It searches all ast.Files of all packages in prog. +// exact is defined as for astutil.PathEnclosingInterval. +// +// The zero value is returned if not found. +// +func (prog *Program) PathEnclosingInterval(start, end token.Pos) (pkg *PackageInfo, path []ast.Node, exact bool) { + for _, info := range prog.AllPackages { + for _, f := range info.Files { + if f.Pos() == token.NoPos { + // This can happen if the parser saw + // too many errors and bailed out. + // (Use parser.AllErrors to prevent that.) + continue + } + if !tokenFileContainsPos(prog.Fset.File(f.Pos()), start) { + continue + } + if path, exact := astutil.PathEnclosingInterval(f, start, end); path != nil { + return info, path, exact + } + } + } + return nil, nil, false +} + +// InitialPackages returns a new slice containing the set of initial +// packages (Created + Imported) in unspecified order. +// +func (prog *Program) InitialPackages() []*PackageInfo { + infos := make([]*PackageInfo, 0, len(prog.Created)+len(prog.Imported)) + infos = append(infos, prog.Created...) + for _, info := range prog.Imported { + infos = append(infos, info) + } + return infos +} + +// Package returns the ASTs and results of type checking for the +// specified package. +func (prog *Program) Package(path string) *PackageInfo { + if info, ok := prog.AllPackages[prog.importMap[path]]; ok { + return info + } + for _, info := range prog.Created { + if path == info.Pkg.Path() { + return info + } + } + return nil +} + +// ---------- Implementation ---------- + +// importer holds the working state of the algorithm. +type importer struct { + conf *Config // the client configuration + start time.Time // for logging + + progMu sync.Mutex // guards prog + prog *Program // the resulting program + + importedMu sync.Mutex // guards imported + imported map[string]*importInfo // all imported packages (incl. failures) by import path + + // import dependency graph: graph[x][y] => x imports y + // + // Since non-importable packages cannot be cyclic, we ignore + // their imports, thus we only need the subgraph over importable + // packages. Nodes are identified by their import paths. + graphMu sync.Mutex + graph map[string]map[string]bool +} + +// importInfo tracks the success or failure of a single import. +// +// Upon completion, exactly one of info and err is non-nil: +// info on successful creation of a package, err otherwise. +// A successful package may still contain type errors. +// +type importInfo struct { + path string // import path + mu sync.Mutex // guards the following fields prior to completion + info *PackageInfo // results of typechecking (including errors) + err error // reason for failure to create a package + complete sync.Cond // complete condition is that one of info, err is non-nil. +} + +// awaitCompletion blocks until ii is complete, +// i.e. the info and err fields are safe to inspect without a lock. +// It is concurrency-safe and idempotent. +func (ii *importInfo) awaitCompletion() { + ii.mu.Lock() + for ii.info == nil && ii.err == nil { + ii.complete.Wait() + } + ii.mu.Unlock() +} + +// Complete marks ii as complete. +// Its info and err fields will not be subsequently updated. +func (ii *importInfo) Complete(info *PackageInfo, err error) { + ii.mu.Lock() + ii.info = info + ii.err = err + ii.complete.Broadcast() + ii.mu.Unlock() +} + +// Load creates the initial packages specified by conf.{Create,Import}Pkgs, +// loading their dependencies packages as needed. +// +// On success, Load returns a Program containing a PackageInfo for +// each package. On failure, it returns an error. +// +// If AllowErrors is true, Load will return a Program even if some +// packages contained I/O, parser or type errors, or if dependencies +// were missing. (Such errors are accessible via PackageInfo.Errors. If +// false, Load will fail if any package had an error. +// +// It is an error if no packages were loaded. +// +func (conf *Config) Load() (*Program, error) { + // Create a simple default error handler for parse/type errors. + if conf.TypeChecker.Error == nil { + conf.TypeChecker.Error = func(e error) { fmt.Fprintln(os.Stderr, e) } + } + + // Set default working directory for relative package references. + if conf.Cwd == "" { + var err error + conf.Cwd, err = os.Getwd() + if err != nil { + return nil, err + } + } + + // Install default FindPackage hook using go/build logic. + if conf.FindPackage == nil { + conf.FindPackage = func(ctxt *build.Context, path string) (*build.Package, error) { + // TODO(adonovan): cache calls to build.Import + // so we don't do it three times per test package. + bp, err := ctxt.Import(path, conf.Cwd, 0) + if _, ok := err.(*build.NoGoError); ok { + return bp, nil // empty directory is not an error + } + return bp, err + } + } + + prog := &Program{ + Fset: conf.fset(), + Imported: make(map[string]*PackageInfo), + importMap: make(map[string]*types.Package), + AllPackages: make(map[*types.Package]*PackageInfo), + } + + imp := importer{ + conf: conf, + prog: prog, + imported: make(map[string]*importInfo), + start: time.Now(), + graph: make(map[string]map[string]bool), + } + + // -- loading proper (concurrent phase) -------------------------------- + + var errpkgs []string // packages that contained errors + + // Load the initially imported packages and their dependencies, + // in parallel. + for _, ii := range imp.loadAll("", conf.ImportPkgs) { + if ii.err != nil { + conf.TypeChecker.Error(ii.err) // failed to create package + errpkgs = append(errpkgs, ii.path) + continue + } + prog.Imported[ii.info.Pkg.Path()] = ii.info + } + + // Augment the designated initial packages by their tests. + // Dependencies are loaded in parallel. + var xtestPkgs []*build.Package + for path, augment := range conf.ImportPkgs { + if !augment { + continue + } + + bp, err := conf.FindPackage(conf.build(), path) + if err != nil { + // Package not found, or can't even parse package declaration. + // Already reported by previous loop; ignore it. + continue + } + + // Needs external test package? + if len(bp.XTestGoFiles) > 0 { + xtestPkgs = append(xtestPkgs, bp) + } + + imp.importedMu.Lock() // (unnecessary, we're sequential here) + info := imp.imported[path].info // must be non-nil, see above + imp.importedMu.Unlock() + + // Parse the in-package test files. + files, errs := imp.conf.parsePackageFiles(bp, 't') + for _, err := range errs { + info.appendError(err) + } + + // The test files augmenting package P cannot be imported, + // but may import packages that import P, + // so we must disable the cycle check. + imp.addFiles(info, files, false) + } + + createPkg := func(path string, files []*ast.File, errs []error) { + info := imp.newPackageInfo(path) + for _, err := range errs { + info.appendError(err) + } + + // Ad hoc packages are non-importable, + // so no cycle check is needed. + // addFiles loads dependencies in parallel. + imp.addFiles(info, files, false) + prog.Created = append(prog.Created, info) + } + + // Create packages specified by conf.CreatePkgs. + for _, cp := range conf.CreatePkgs { + files, errs := parseFiles(conf.fset(), conf.build(), nil, ".", cp.Filenames, conf.ParserMode) + files = append(files, cp.Files...) + + path := cp.Path + if path == "" { + if len(files) > 0 { + path = files[0].Name.Name + } else { + path = "(unnamed)" + } + } + createPkg(path, files, errs) + } + + // Create external test packages. + sort.Sort(byImportPath(xtestPkgs)) + for _, bp := range xtestPkgs { + files, errs := imp.conf.parsePackageFiles(bp, 'x') + createPkg(bp.ImportPath+"_test", files, errs) + } + + // -- finishing up (sequential) ---------------------------------------- + + if len(prog.Imported)+len(prog.Created) == 0 { + return nil, errors.New("no initial packages were loaded") + } + + // Create infos for indirectly imported packages. + // e.g. incomplete packages without syntax, loaded from export data. + for _, obj := range prog.importMap { + info := prog.AllPackages[obj] + if info == nil { + prog.AllPackages[obj] = &PackageInfo{Pkg: obj, Importable: true} + } else { + // finished + info.checker = nil + info.errorFunc = nil + } + } + + if !conf.AllowErrors { + // Report errors in indirectly imported packages. + for _, info := range prog.AllPackages { + if len(info.Errors) > 0 { + errpkgs = append(errpkgs, info.Pkg.Path()) + } + } + if errpkgs != nil { + var more string + if len(errpkgs) > 3 { + more = fmt.Sprintf(" and %d more", len(errpkgs)-3) + errpkgs = errpkgs[:3] + } + return nil, fmt.Errorf("couldn't load packages due to errors: %s%s", + strings.Join(errpkgs, ", "), more) + } + } + + markErrorFreePackages(prog.AllPackages) + + return prog, nil +} + +type byImportPath []*build.Package + +func (b byImportPath) Len() int { return len(b) } +func (b byImportPath) Less(i, j int) bool { return b[i].ImportPath < b[j].ImportPath } +func (b byImportPath) Swap(i, j int) { b[i], b[j] = b[j], b[i] } + +// markErrorFreePackages sets the TransitivelyErrorFree flag on all +// applicable packages. +func markErrorFreePackages(allPackages map[*types.Package]*PackageInfo) { + // Build the transpose of the import graph. + importedBy := make(map[*types.Package]map[*types.Package]bool) + for P := range allPackages { + for _, Q := range P.Imports() { + clients, ok := importedBy[Q] + if !ok { + clients = make(map[*types.Package]bool) + importedBy[Q] = clients + } + clients[P] = true + } + } + + // Find all packages reachable from some error package. + reachable := make(map[*types.Package]bool) + var visit func(*types.Package) + visit = func(p *types.Package) { + if !reachable[p] { + reachable[p] = true + for q := range importedBy[p] { + visit(q) + } + } + } + for _, info := range allPackages { + if len(info.Errors) > 0 { + visit(info.Pkg) + } + } + + // Mark the others as "transitively error-free". + for _, info := range allPackages { + if !reachable[info.Pkg] { + info.TransitivelyErrorFree = true + } + } +} + +// build returns the effective build context. +func (conf *Config) build() *build.Context { + if conf.Build != nil { + return conf.Build + } + return &build.Default +} + +// parsePackageFiles enumerates the files belonging to package path, +// then loads, parses and returns them, plus a list of I/O or parse +// errors that were encountered. +// +// 'which' indicates which files to include: +// 'g': include non-test *.go source files (GoFiles + processed CgoFiles) +// 't': include in-package *_test.go source files (TestGoFiles) +// 'x': include external *_test.go source files. (XTestGoFiles) +// +func (conf *Config) parsePackageFiles(bp *build.Package, which rune) ([]*ast.File, []error) { + var filenames []string + switch which { + case 'g': + filenames = bp.GoFiles + case 't': + filenames = bp.TestGoFiles + case 'x': + filenames = bp.XTestGoFiles + default: + panic(which) + } + + files, errs := parseFiles(conf.fset(), conf.build(), conf.DisplayPath, bp.Dir, filenames, conf.ParserMode) + + // Preprocess CgoFiles and parse the outputs (sequentially). + if which == 'g' && bp.CgoFiles != nil { + cgofiles, err := processCgoFiles(bp, conf.fset(), conf.DisplayPath, conf.ParserMode) + if err != nil { + errs = append(errs, err) + } else { + files = append(files, cgofiles...) + } + } + + return files, errs +} + +// doImport imports the package denoted by path. +// It implements the types.Importer signature. +// +// imports is the type-checker's package canonicalization map. +// +// It returns an error if a package could not be created +// (e.g. go/build or parse error), but type errors are reported via +// the types.Config.Error callback (the first of which is also saved +// in the package's PackageInfo). +// +// Idempotent. +// +func (imp *importer) doImport(from *PackageInfo, to string) (*types.Package, error) { + // Package unsafe is handled specially, and has no PackageInfo. + // TODO(adonovan): move this check into go/types? + if to == "unsafe" { + return types.Unsafe, nil + } + if to == "C" { + // This should be unreachable, but ad hoc packages are + // not currently subject to cgo preprocessing. + // See https://github.com/golang/go/issues/11627. + return nil, fmt.Errorf(`the loader doesn't cgo-process ad hoc packages like %q; see Go issue 11627`, + from.Pkg.Path()) + } + + imp.importedMu.Lock() + ii := imp.imported[to] + imp.importedMu.Unlock() + if ii == nil { + panic("internal error: unexpected import: " + to) + } + if ii.err != nil { + return nil, ii.err + } + if ii.info != nil { + return ii.info.Pkg, nil + } + + // Import of incomplete package: this indicates a cycle. + fromPath := from.Pkg.Path() + if cycle := imp.findPath(to, fromPath); cycle != nil { + cycle = append([]string{fromPath}, cycle...) + return nil, fmt.Errorf("import cycle: %s", strings.Join(cycle, " -> ")) + } + + panic("internal error: import of incomplete (yet acyclic) package: " + fromPath) +} + +// loadAll loads, parses, and type-checks the specified packages in +// parallel and returns their completed importInfos in unspecified order. +// +// fromPath is the import path of the importing package, if it is +// importable, "" otherwise. It is used for cycle detection. +// +func (imp *importer) loadAll(fromPath string, paths map[string]bool) []*importInfo { + result := make([]*importInfo, 0, len(paths)) + for path := range paths { + result = append(result, imp.startLoad(path)) + } + + if fromPath != "" { + // We're loading a set of imports. + // + // We must record graph edges from the importing package + // to its dependencies, and check for cycles. + imp.graphMu.Lock() + deps, ok := imp.graph[fromPath] + if !ok { + deps = make(map[string]bool) + imp.graph[fromPath] = deps + } + for path := range paths { + deps[path] = true + } + imp.graphMu.Unlock() + } + + for _, ii := range result { + if fromPath != "" { + if cycle := imp.findPath(ii.path, fromPath); cycle != nil { + // Cycle-forming import: we must not await its + // completion since it would deadlock. + // + // We don't record the error in ii since + // the error is really associated with the + // cycle-forming edge, not the package itself. + // (Also it would complicate the + // invariants of importPath completion.) + if trace { + fmt.Fprintln(os.Stderr, "import cycle: %q", cycle) + } + continue + } + } + ii.awaitCompletion() + + } + return result +} + +// findPath returns an arbitrary path from 'from' to 'to' in the import +// graph, or nil if there was none. +func (imp *importer) findPath(from, to string) []string { + imp.graphMu.Lock() + defer imp.graphMu.Unlock() + + seen := make(map[string]bool) + var search func(stack []string, importPath string) []string + search = func(stack []string, importPath string) []string { + if !seen[importPath] { + seen[importPath] = true + stack = append(stack, importPath) + if importPath == to { + return stack + } + for x := range imp.graph[importPath] { + if p := search(stack, x); p != nil { + return p + } + } + } + return nil + } + return search(make([]string, 0, 20), from) +} + +// startLoad initiates the loading, parsing and type-checking of the +// specified package and its dependencies, if it has not already begun. +// +// It returns an importInfo, not necessarily in a completed state. The +// caller must call awaitCompletion() before accessing its info and err +// fields. +// +// startLoad is concurrency-safe and idempotent. +// +// Precondition: path != "unsafe". +// +func (imp *importer) startLoad(path string) *importInfo { + imp.importedMu.Lock() + ii, ok := imp.imported[path] + if !ok { + ii = &importInfo{path: path} + ii.complete.L = &ii.mu + imp.imported[path] = ii + go func() { + ii.Complete(imp.load(path)) + }() + } + imp.importedMu.Unlock() + + return ii +} + +// load implements package loading by parsing Go source files +// located by go/build. +// +func (imp *importer) load(path string) (*PackageInfo, error) { + bp, err := imp.conf.FindPackage(imp.conf.build(), path) + if err != nil { + return nil, err // package not found + } + info := imp.newPackageInfo(bp.ImportPath) + info.Importable = true + files, errs := imp.conf.parsePackageFiles(bp, 'g') + for _, err := range errs { + info.appendError(err) + } + + imp.addFiles(info, files, true) + + imp.progMu.Lock() + imp.prog.importMap[path] = info.Pkg + imp.progMu.Unlock() + + return info, nil +} + +// addFiles adds and type-checks the specified files to info, loading +// their dependencies if needed. The order of files determines the +// package initialization order. It may be called multiple times on the +// same package. Errors are appended to the info.Errors field. +// +// cycleCheck determines whether the imports within files create +// dependency edges that should be checked for potential cycles. +// +func (imp *importer) addFiles(info *PackageInfo, files []*ast.File, cycleCheck bool) { + info.Files = append(info.Files, files...) + + // Ensure the dependencies are loaded, in parallel. + var fromPath string + if cycleCheck { + fromPath = info.Pkg.Path() + } + imp.loadAll(fromPath, scanImports(files)) + + if trace { + fmt.Fprintf(os.Stderr, "%s: start %q (%d)\n", + time.Since(imp.start), info.Pkg.Path(), len(files)) + } + + // Ignore the returned (first) error since we + // already collect them all in the PackageInfo. + info.checker.Files(files) + + if trace { + fmt.Fprintf(os.Stderr, "%s: stop %q\n", + time.Since(imp.start), info.Pkg.Path()) + } +} + +func (imp *importer) newPackageInfo(path string) *PackageInfo { + pkg := types.NewPackage(path, "") + info := &PackageInfo{ + Pkg: pkg, + Info: types.Info{ + Types: make(map[ast.Expr]types.TypeAndValue), + Defs: make(map[*ast.Ident]types.Object), + Uses: make(map[*ast.Ident]types.Object), + Implicits: make(map[ast.Node]types.Object), + Scopes: make(map[ast.Node]*types.Scope), + Selections: make(map[*ast.SelectorExpr]*types.Selection), + }, + errorFunc: imp.conf.TypeChecker.Error, + } + + // Copy the types.Config so we can vary it across PackageInfos. + tc := imp.conf.TypeChecker + tc.IgnoreFuncBodies = false + if f := imp.conf.TypeCheckFuncBodies; f != nil { + tc.IgnoreFuncBodies = !f(path) + } + tc.Import = func(_ map[string]*types.Package, to string) (*types.Package, error) { + return imp.doImport(info, to) + } + tc.Error = info.appendError // appendError wraps the user's Error function + + info.checker = types.NewChecker(&tc, imp.conf.fset(), pkg, &info.Info) + imp.progMu.Lock() + imp.prog.AllPackages[pkg] = info + imp.progMu.Unlock() + return info +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/loader/loader_test.go b/Godeps/_workspace/src/golang.org/x/tools/go/loader/loader_test.go new file mode 100644 index 0000000000..0b42e398d5 --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/loader/loader_test.go @@ -0,0 +1,669 @@ +// Copyright 2013 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package loader_test + +import ( + "fmt" + "go/build" + "reflect" + "sort" + "strings" + "sync" + "testing" + + "golang.org/x/tools/go/buildutil" + "golang.org/x/tools/go/loader" +) + +// TestFromArgs checks that conf.FromArgs populates conf correctly. +// It does no I/O. +func TestFromArgs(t *testing.T) { + type result struct { + Err string + Rest []string + ImportPkgs map[string]bool + CreatePkgs []loader.PkgSpec + } + for _, test := range []struct { + args []string + tests bool + want result + }{ + // Mix of existing and non-existent packages. + { + args: []string{"nosuchpkg", "errors"}, + want: result{ + ImportPkgs: map[string]bool{"errors": false, "nosuchpkg": false}, + }, + }, + // Same, with -test flag. + { + args: []string{"nosuchpkg", "errors"}, + tests: true, + want: result{ + ImportPkgs: map[string]bool{"errors": true, "nosuchpkg": true}, + }, + }, + // Surplus arguments. + { + args: []string{"fmt", "errors", "--", "surplus"}, + want: result{ + Rest: []string{"surplus"}, + ImportPkgs: map[string]bool{"errors": false, "fmt": false}, + }, + }, + // Ad hoc package specified as *.go files. + { + args: []string{"foo.go", "bar.go"}, + want: result{CreatePkgs: []loader.PkgSpec{{ + Filenames: []string{"foo.go", "bar.go"}, + }}}, + }, + // Mixture of *.go and import paths. + { + args: []string{"foo.go", "fmt"}, + want: result{ + Err: "named files must be .go files: fmt", + }, + }, + } { + var conf loader.Config + rest, err := conf.FromArgs(test.args, test.tests) + got := result{ + Rest: rest, + ImportPkgs: conf.ImportPkgs, + CreatePkgs: conf.CreatePkgs, + } + if err != nil { + got.Err = err.Error() + } + if !reflect.DeepEqual(got, test.want) { + t.Errorf("FromArgs(%q) = %+v, want %+v", test.args, got, test.want) + } + } +} + +func TestLoad_NoInitialPackages(t *testing.T) { + var conf loader.Config + + const wantErr = "no initial packages were loaded" + + prog, err := conf.Load() + if err == nil { + t.Errorf("Load succeeded unexpectedly, want %q", wantErr) + } else if err.Error() != wantErr { + t.Errorf("Load failed with wrong error %q, want %q", err, wantErr) + } + if prog != nil { + t.Errorf("Load unexpectedly returned a Program") + } +} + +func TestLoad_MissingInitialPackage(t *testing.T) { + var conf loader.Config + conf.Import("nosuchpkg") + conf.Import("errors") + + const wantErr = "couldn't load packages due to errors: nosuchpkg" + + prog, err := conf.Load() + if err == nil { + t.Errorf("Load succeeded unexpectedly, want %q", wantErr) + } else if err.Error() != wantErr { + t.Errorf("Load failed with wrong error %q, want %q", err, wantErr) + } + if prog != nil { + t.Errorf("Load unexpectedly returned a Program") + } +} + +func TestLoad_MissingInitialPackage_AllowErrors(t *testing.T) { + var conf loader.Config + conf.AllowErrors = true + conf.Import("nosuchpkg") + conf.ImportWithTests("errors") + + prog, err := conf.Load() + if err != nil { + t.Errorf("Load failed unexpectedly: %v", err) + } + if prog == nil { + t.Fatalf("Load returned a nil Program") + } + if got, want := created(prog), "errors_test"; got != want { + t.Errorf("Created = %s, want %s", got, want) + } + if got, want := imported(prog), "errors"; got != want { + t.Errorf("Imported = %s, want %s", got, want) + } +} + +func TestCreateUnnamedPackage(t *testing.T) { + var conf loader.Config + conf.CreateFromFilenames("") + prog, err := conf.Load() + if err != nil { + t.Fatalf("Load failed: %v", err) + } + if got, want := fmt.Sprint(prog.InitialPackages()), "[(unnamed)]"; got != want { + t.Errorf("InitialPackages = %s, want %s", got, want) + } +} + +func TestLoad_MissingFileInCreatedPackage(t *testing.T) { + var conf loader.Config + conf.CreateFromFilenames("", "missing.go") + + const wantErr = "couldn't load packages due to errors: (unnamed)" + + prog, err := conf.Load() + if prog != nil { + t.Errorf("Load unexpectedly returned a Program") + } + if err == nil { + t.Fatalf("Load succeeded unexpectedly, want %q", wantErr) + } + if err.Error() != wantErr { + t.Fatalf("Load failed with wrong error %q, want %q", err, wantErr) + } +} + +func TestLoad_MissingFileInCreatedPackage_AllowErrors(t *testing.T) { + conf := loader.Config{AllowErrors: true} + conf.CreateFromFilenames("", "missing.go") + + prog, err := conf.Load() + if err != nil { + t.Errorf("Load failed: %v", err) + } + if got, want := fmt.Sprint(prog.InitialPackages()), "[(unnamed)]"; got != want { + t.Fatalf("InitialPackages = %s, want %s", got, want) + } +} + +func TestLoad_ParseError(t *testing.T) { + var conf loader.Config + conf.CreateFromFilenames("badpkg", "testdata/badpkgdecl.go") + + const wantErr = "couldn't load packages due to errors: badpkg" + + prog, err := conf.Load() + if prog != nil { + t.Errorf("Load unexpectedly returned a Program") + } + if err == nil { + t.Fatalf("Load succeeded unexpectedly, want %q", wantErr) + } + if err.Error() != wantErr { + t.Fatalf("Load failed with wrong error %q, want %q", err, wantErr) + } +} + +func TestLoad_ParseError_AllowErrors(t *testing.T) { + var conf loader.Config + conf.AllowErrors = true + conf.CreateFromFilenames("badpkg", "testdata/badpkgdecl.go") + + prog, err := conf.Load() + if err != nil { + t.Errorf("Load failed unexpectedly: %v", err) + } + if prog == nil { + t.Fatalf("Load returned a nil Program") + } + if got, want := created(prog), "badpkg"; got != want { + t.Errorf("Created = %s, want %s", got, want) + } + + badpkg := prog.Created[0] + if len(badpkg.Files) != 1 { + t.Errorf("badpkg has %d files, want 1", len(badpkg.Files)) + } + wantErr := "testdata/badpkgdecl.go:1:34: expected 'package', found 'EOF'" + if !hasError(badpkg.Errors, wantErr) { + t.Errorf("badpkg.Errors = %v, want %s", badpkg.Errors, wantErr) + } +} + +func TestLoad_FromSource_Success(t *testing.T) { + var conf loader.Config + conf.CreateFromFilenames("P", "testdata/a.go", "testdata/b.go") + + prog, err := conf.Load() + if err != nil { + t.Errorf("Load failed unexpectedly: %v", err) + } + if prog == nil { + t.Fatalf("Load returned a nil Program") + } + if got, want := created(prog), "P"; got != want { + t.Errorf("Created = %s, want %s", got, want) + } +} + +func TestLoad_FromImports_Success(t *testing.T) { + var conf loader.Config + conf.ImportWithTests("fmt") + conf.ImportWithTests("errors") + + prog, err := conf.Load() + if err != nil { + t.Errorf("Load failed unexpectedly: %v", err) + } + if prog == nil { + t.Fatalf("Load returned a nil Program") + } + if got, want := created(prog), "errors_test fmt_test"; got != want { + t.Errorf("Created = %q, want %s", got, want) + } + if got, want := imported(prog), "errors fmt"; got != want { + t.Errorf("Imported = %s, want %s", got, want) + } + // Check set of transitive packages. + // There are >30 and the set may grow over time, so only check a few. + want := map[string]bool{ + "strings": true, + "time": true, + "runtime": true, + "testing": true, + "unicode": true, + } + for _, path := range all(prog) { + delete(want, path) + } + if len(want) > 0 { + t.Errorf("AllPackages is missing these keys: %q", keys(want)) + } +} + +func TestLoad_MissingIndirectImport(t *testing.T) { + pkgs := map[string]string{ + "a": `package a; import _ "b"`, + "b": `package b; import _ "c"`, + } + conf := loader.Config{Build: fakeContext(pkgs)} + conf.Import("a") + + const wantErr = "couldn't load packages due to errors: b" + + prog, err := conf.Load() + if err == nil { + t.Errorf("Load succeeded unexpectedly, want %q", wantErr) + } else if err.Error() != wantErr { + t.Errorf("Load failed with wrong error %q, want %q", err, wantErr) + } + if prog != nil { + t.Errorf("Load unexpectedly returned a Program") + } +} + +func TestLoad_BadDependency_AllowErrors(t *testing.T) { + for _, test := range []struct { + descr string + pkgs map[string]string + wantPkgs string + }{ + + { + descr: "missing dependency", + pkgs: map[string]string{ + "a": `package a; import _ "b"`, + "b": `package b; import _ "c"`, + }, + wantPkgs: "a b", + }, + { + descr: "bad package decl in dependency", + pkgs: map[string]string{ + "a": `package a; import _ "b"`, + "b": `package b; import _ "c"`, + "c": `package`, + }, + wantPkgs: "a b", + }, + { + descr: "parse error in dependency", + pkgs: map[string]string{ + "a": `package a; import _ "b"`, + "b": `package b; import _ "c"`, + "c": `package c; var x = `, + }, + wantPkgs: "a b c", + }, + } { + conf := loader.Config{ + AllowErrors: true, + Build: fakeContext(test.pkgs), + } + conf.Import("a") + + prog, err := conf.Load() + if err != nil { + t.Errorf("%s: Load failed unexpectedly: %v", test.descr, err) + } + if prog == nil { + t.Fatalf("%s: Load returned a nil Program", test.descr) + } + + if got, want := imported(prog), "a"; got != want { + t.Errorf("%s: Imported = %s, want %s", test.descr, got, want) + } + if got := all(prog); strings.Join(got, " ") != test.wantPkgs { + t.Errorf("%s: AllPackages = %s, want %s", test.descr, got, test.wantPkgs) + } + } +} + +func TestCwd(t *testing.T) { + ctxt := fakeContext(map[string]string{"one/two/three": `package three`}) + for _, test := range []struct { + cwd, arg, want string + }{ + {cwd: "/go/src/one", arg: "./two/three", want: "one/two/three"}, + {cwd: "/go/src/one", arg: "../one/two/three", want: "one/two/three"}, + {cwd: "/go/src/one", arg: "one/two/three", want: "one/two/three"}, + {cwd: "/go/src/one/two/three", arg: ".", want: "one/two/three"}, + {cwd: "/go/src/one", arg: "two/three", want: ""}, + } { + conf := loader.Config{ + Cwd: test.cwd, + Build: ctxt, + } + conf.Import(test.arg) + + var got string + prog, err := conf.Load() + if prog != nil { + got = imported(prog) + } + if got != test.want { + t.Errorf("Load(%s) from %s: Imported = %s, want %s", + test.arg, test.cwd, got, test.want) + if err != nil { + t.Errorf("Load failed: %v", err) + } + } + } +} + +// TODO(adonovan): more Load tests: +// +// failures: +// - to parse package decl of *_test.go files +// - to parse package decl of external *_test.go files +// - to parse whole of *_test.go files +// - to parse whole of external *_test.go files +// - to open a *.go file during import scanning +// - to import from binary + +// features: +// - InitialPackages +// - PackageCreated hook +// - TypeCheckFuncBodies hook + +func TestTransitivelyErrorFreeFlag(t *testing.T) { + // Create an minimal custom build.Context + // that fakes the following packages: + // + // a --> b --> c! c has an error + // \ d and e are transitively error-free. + // e --> d + // + // Each package [a-e] consists of one file, x.go. + pkgs := map[string]string{ + "a": `package a; import (_ "b"; _ "e")`, + "b": `package b; import _ "c"`, + "c": `package c; func f() { _ = int(false) }`, // type error within function body + "d": `package d;`, + "e": `package e; import _ "d"`, + } + conf := loader.Config{ + AllowErrors: true, + Build: fakeContext(pkgs), + } + conf.Import("a") + + prog, err := conf.Load() + if err != nil { + t.Errorf("Load failed: %s", err) + } + if prog == nil { + t.Fatalf("Load returned nil *Program") + } + + for pkg, info := range prog.AllPackages { + var wantErr, wantTEF bool + switch pkg.Path() { + case "a", "b": + case "c": + wantErr = true + case "d", "e": + wantTEF = true + default: + t.Errorf("unexpected package: %q", pkg.Path()) + continue + } + + if (info.Errors != nil) != wantErr { + if wantErr { + t.Errorf("Package %q.Error = nil, want error", pkg.Path()) + } else { + t.Errorf("Package %q has unexpected Errors: %v", + pkg.Path(), info.Errors) + } + } + + if info.TransitivelyErrorFree != wantTEF { + t.Errorf("Package %q.TransitivelyErrorFree=%t, want %t", + pkg.Path(), info.TransitivelyErrorFree, wantTEF) + } + } +} + +// Test that syntax (scan/parse), type, and loader errors are recorded +// (in PackageInfo.Errors) and reported (via Config.TypeChecker.Error). +func TestErrorReporting(t *testing.T) { + pkgs := map[string]string{ + "a": `package a; import (_ "b"; _ "c"); var x int = false`, + "b": `package b; 'syntax error!`, + } + conf := loader.Config{ + AllowErrors: true, + Build: fakeContext(pkgs), + } + var mu sync.Mutex + var allErrors []error + conf.TypeChecker.Error = func(err error) { + mu.Lock() + allErrors = append(allErrors, err) + mu.Unlock() + } + conf.Import("a") + + prog, err := conf.Load() + if err != nil { + t.Errorf("Load failed: %s", err) + } + if prog == nil { + t.Fatalf("Load returned nil *Program") + } + + // TODO(adonovan): test keys of ImportMap. + + // Check errors recorded in each PackageInfo. + for pkg, info := range prog.AllPackages { + switch pkg.Path() { + case "a": + if !hasError(info.Errors, "cannot convert false") { + t.Errorf("a.Errors = %v, want bool conversion (type) error", info.Errors) + } + if !hasError(info.Errors, "could not import c") { + t.Errorf("a.Errors = %v, want import (loader) error", info.Errors) + } + case "b": + if !hasError(info.Errors, "rune literal not terminated") { + t.Errorf("b.Errors = %v, want unterminated literal (syntax) error", info.Errors) + } + } + } + + // Check errors reported via error handler. + if !hasError(allErrors, "cannot convert false") || + !hasError(allErrors, "rune literal not terminated") || + !hasError(allErrors, "could not import c") { + t.Errorf("allErrors = %v, want syntax, type and loader errors", allErrors) + } +} + +func TestCycles(t *testing.T) { + for _, test := range []struct { + descr string + ctxt *build.Context + wantErr string + }{ + { + "self-cycle", + fakeContext(map[string]string{ + "main": `package main; import _ "selfcycle"`, + "selfcycle": `package selfcycle; import _ "selfcycle"`, + }), + `import cycle: selfcycle -> selfcycle`, + }, + { + "three-package cycle", + fakeContext(map[string]string{ + "main": `package main; import _ "a"`, + "a": `package a; import _ "b"`, + "b": `package b; import _ "c"`, + "c": `package c; import _ "a"`, + }), + `import cycle: c -> a -> b -> c`, + }, + { + "self-cycle in dependency of test file", + buildutil.FakeContext(map[string]map[string]string{ + "main": { + "main.go": `package main`, + "main_test.go": `package main; import _ "a"`, + }, + "a": { + "a.go": `package a; import _ "a"`, + }, + }), + `import cycle: a -> a`, + }, + // TODO(adonovan): fix: these fail + // { + // "two-package cycle in dependency of test file", + // buildutil.FakeContext(map[string]map[string]string{ + // "main": { + // "main.go": `package main`, + // "main_test.go": `package main; import _ "a"`, + // }, + // "a": { + // "a.go": `package a; import _ "main"`, + // }, + // }), + // `import cycle: main -> a -> main`, + // }, + // { + // "self-cycle in augmented package", + // buildutil.FakeContext(map[string]map[string]string{ + // "main": { + // "main.go": `package main`, + // "main_test.go": `package main; import _ "main"`, + // }, + // }), + // `import cycle: main -> main`, + // }, + } { + conf := loader.Config{ + AllowErrors: true, + Build: test.ctxt, + } + var mu sync.Mutex + var allErrors []error + conf.TypeChecker.Error = func(err error) { + mu.Lock() + allErrors = append(allErrors, err) + mu.Unlock() + } + conf.ImportWithTests("main") + + prog, err := conf.Load() + if err != nil { + t.Errorf("%s: Load failed: %s", test.descr, err) + } + if prog == nil { + t.Fatalf("%s: Load returned nil *Program", test.descr) + } + + if !hasError(allErrors, test.wantErr) { + t.Errorf("%s: Load() errors = %q, want %q", + test.descr, allErrors, test.wantErr) + } + } + + // TODO(adonovan): + // - Test that in a legal test cycle, none of the symbols + // defined by augmentation are visible via import. +} + +// ---- utilities ---- + +// Simplifying wrapper around buildutil.FakeContext for single-file packages. +func fakeContext(pkgs map[string]string) *build.Context { + pkgs2 := make(map[string]map[string]string) + for path, content := range pkgs { + pkgs2[path] = map[string]string{"x.go": content} + } + return buildutil.FakeContext(pkgs2) +} + +func hasError(errors []error, substr string) bool { + for _, err := range errors { + if strings.Contains(err.Error(), substr) { + return true + } + } + return false +} + +func keys(m map[string]bool) (keys []string) { + for key := range m { + keys = append(keys, key) + } + sort.Strings(keys) + return +} + +// Returns all loaded packages. +func all(prog *loader.Program) []string { + var pkgs []string + for _, info := range prog.AllPackages { + pkgs = append(pkgs, info.Pkg.Path()) + } + sort.Strings(pkgs) + return pkgs +} + +// Returns initially imported packages, as a string. +func imported(prog *loader.Program) string { + var pkgs []string + for _, info := range prog.Imported { + pkgs = append(pkgs, info.Pkg.Path()) + } + sort.Strings(pkgs) + return strings.Join(pkgs, " ") +} + +// Returns initially created packages, as a string. +func created(prog *loader.Program) string { + var pkgs []string + for _, info := range prog.Created { + pkgs = append(pkgs, info.Pkg.Path()) + } + return strings.Join(pkgs, " ") +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/loader/stdlib_test.go b/Godeps/_workspace/src/golang.org/x/tools/go/loader/stdlib_test.go new file mode 100644 index 0000000000..f5c45abbde --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/loader/stdlib_test.go @@ -0,0 +1,192 @@ +// Copyright 2013 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package loader_test + +// This file enumerates all packages beneath $GOROOT, loads them, plus +// their external tests if any, runs the type checker on them, and +// prints some summary information. +// +// Run test with GOMAXPROCS=8. + +import ( + "bytes" + "fmt" + "go/ast" + "go/build" + "go/token" + "io/ioutil" + "path/filepath" + "runtime" + "strings" + "testing" + "time" + + "golang.org/x/tools/go/buildutil" + "golang.org/x/tools/go/loader" + "golang.org/x/tools/go/types" +) + +func TestStdlib(t *testing.T) { + runtime.GC() + t0 := time.Now() + var memstats runtime.MemStats + runtime.ReadMemStats(&memstats) + alloc := memstats.Alloc + + // Load, parse and type-check the program. + ctxt := build.Default // copy + ctxt.GOPATH = "" // disable GOPATH + conf := loader.Config{Build: &ctxt} + for _, path := range buildutil.AllPackages(conf.Build) { + conf.ImportWithTests(path) + } + + prog, err := conf.Load() + if err != nil { + t.Fatalf("Load failed: %v", err) + } + + t1 := time.Now() + runtime.GC() + runtime.ReadMemStats(&memstats) + + numPkgs := len(prog.AllPackages) + if want := 205; numPkgs < want { + t.Errorf("Loaded only %d packages, want at least %d", numPkgs, want) + } + + // Dump package members. + if false { + for pkg := range prog.AllPackages { + fmt.Printf("Package %s:\n", pkg.Path()) + scope := pkg.Scope() + qualifier := types.RelativeTo(pkg) + for _, name := range scope.Names() { + if ast.IsExported(name) { + fmt.Printf("\t%s\n", types.ObjectString(scope.Lookup(name), qualifier)) + } + } + fmt.Println() + } + } + + // Check that Test functions for io/ioutil, regexp and + // compress/bzip2 are all simultaneously present. + // (The apparent cycle formed when augmenting all three of + // these packages by their tests was the original motivation + // for reporting b/7114.) + // + // compress/bzip2.TestBitReader in bzip2_test.go imports io/ioutil + // io/ioutil.TestTempFile in tempfile_test.go imports regexp + // regexp.TestRE2Search in exec_test.go imports compress/bzip2 + for _, test := range []struct{ pkg, fn string }{ + {"io/ioutil", "TestTempFile"}, + {"regexp", "TestRE2Search"}, + {"compress/bzip2", "TestBitReader"}, + } { + info := prog.Imported[test.pkg] + if info == nil { + t.Errorf("failed to load package %q", test.pkg) + continue + } + obj, _ := info.Pkg.Scope().Lookup(test.fn).(*types.Func) + if obj == nil { + t.Errorf("package %q has no func %q", test.pkg, test.fn) + continue + } + } + + // Dump some statistics. + + // determine line count + var lineCount int + prog.Fset.Iterate(func(f *token.File) bool { + lineCount += f.LineCount() + return true + }) + + t.Log("GOMAXPROCS: ", runtime.GOMAXPROCS(0)) + t.Log("#Source lines: ", lineCount) + t.Log("Load/parse/typecheck: ", t1.Sub(t0)) + t.Log("#MB: ", int64(memstats.Alloc-alloc)/1000000) +} + +func TestCgoOption(t *testing.T) { + switch runtime.GOOS { + // On these systems, the net and os/user packages don't use cgo. + case "plan9", "solaris", "windows": + return + } + // In nocgo builds (e.g. linux-amd64-nocgo), + // there is no "runtime/cgo" package, + // so cgo-generated Go files will have a failing import. + if !build.Default.CgoEnabled { + return + } + // Test that we can load cgo-using packages with + // CGO_ENABLED=[01], which causes go/build to select pure + // Go/native implementations, respectively, based on build + // tags. + // + // Each entry specifies a package-level object and the generic + // file expected to define it when cgo is disabled. + // When cgo is enabled, the exact file is not specified (since + // it varies by platform), but must differ from the generic one. + // + // The test also loads the actual file to verify that the + // object is indeed defined at that location. + for _, test := range []struct { + pkg, name, genericFile string + }{ + {"net", "cgoLookupHost", "cgo_stub.go"}, + {"os/user", "lookupId", "lookup_stubs.go"}, + } { + ctxt := build.Default + for _, ctxt.CgoEnabled = range []bool{false, true} { + conf := loader.Config{Build: &ctxt} + conf.Import(test.pkg) + prog, err := conf.Load() + if err != nil { + t.Errorf("Load failed: %v", err) + continue + } + info := prog.Imported[test.pkg] + if info == nil { + t.Errorf("package %s not found", test.pkg) + continue + } + obj := info.Pkg.Scope().Lookup(test.name) + if obj == nil { + t.Errorf("no object %s.%s", test.pkg, test.name) + continue + } + posn := prog.Fset.Position(obj.Pos()) + t.Logf("%s: %s (CgoEnabled=%t)", posn, obj, ctxt.CgoEnabled) + + gotFile := filepath.Base(posn.Filename) + filesMatch := gotFile == test.genericFile + + if ctxt.CgoEnabled && filesMatch { + t.Errorf("CGO_ENABLED=1: %s found in %s, want native file", + obj, gotFile) + } else if !ctxt.CgoEnabled && !filesMatch { + t.Errorf("CGO_ENABLED=0: %s found in %s, want %s", + obj, gotFile, test.genericFile) + } + + // Load the file and check the object is declared at the right place. + b, err := ioutil.ReadFile(posn.Filename) + if err != nil { + t.Errorf("can't read %s: %s", posn.Filename, err) + continue + } + line := string(bytes.Split(b, []byte("\n"))[posn.Line-1]) + ident := line[posn.Column-1:] + if !strings.HasPrefix(ident, test.name) { + t.Errorf("%s: %s not declared here (looking at %q)", posn, obj, ident) + } + } + } +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/loader/util.go b/Godeps/_workspace/src/golang.org/x/tools/go/loader/util.go new file mode 100644 index 0000000000..0404e99106 --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/loader/util.go @@ -0,0 +1,124 @@ +// Copyright 2013 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package loader + +import ( + "go/ast" + "go/build" + "go/parser" + "go/token" + "io" + "os" + "strconv" + "sync" + + "golang.org/x/tools/go/buildutil" +) + +// We use a counting semaphore to limit +// the number of parallel I/O calls per process. +var sema = make(chan bool, 10) + +// parseFiles parses the Go source files within directory dir and +// returns the ASTs of the ones that could be at least partially parsed, +// along with a list of I/O and parse errors encountered. +// +// I/O is done via ctxt, which may specify a virtual file system. +// displayPath is used to transform the filenames attached to the ASTs. +// +func parseFiles(fset *token.FileSet, ctxt *build.Context, displayPath func(string) string, dir string, files []string, mode parser.Mode) ([]*ast.File, []error) { + if displayPath == nil { + displayPath = func(path string) string { return path } + } + var wg sync.WaitGroup + n := len(files) + parsed := make([]*ast.File, n) + errors := make([]error, n) + for i, file := range files { + if !buildutil.IsAbsPath(ctxt, file) { + file = buildutil.JoinPath(ctxt, dir, file) + } + wg.Add(1) + go func(i int, file string) { + sema <- true // wait + defer func() { + wg.Done() + <-sema // signal + }() + var rd io.ReadCloser + var err error + if ctxt.OpenFile != nil { + rd, err = ctxt.OpenFile(file) + } else { + rd, err = os.Open(file) + } + if err != nil { + errors[i] = err // open failed + return + } + + // ParseFile may return both an AST and an error. + parsed[i], errors[i] = parser.ParseFile(fset, displayPath(file), rd, mode) + rd.Close() + }(i, file) + } + wg.Wait() + + // Eliminate nils, preserving order. + var o int + for _, f := range parsed { + if f != nil { + parsed[o] = f + o++ + } + } + parsed = parsed[:o] + + o = 0 + for _, err := range errors { + if err != nil { + errors[o] = err + o++ + } + } + errors = errors[:o] + + return parsed, errors +} + +// scanImports returns the set of all package import paths from all +// import specs in the specified files. +func scanImports(files []*ast.File) map[string]bool { + imports := make(map[string]bool) + for _, f := range files { + for _, decl := range f.Decls { + if decl, ok := decl.(*ast.GenDecl); ok && decl.Tok == token.IMPORT { + for _, spec := range decl.Specs { + spec := spec.(*ast.ImportSpec) + + // NB: do not assume the program is well-formed! + path, err := strconv.Unquote(spec.Path.Value) + if err != nil { + continue // quietly ignore the error + } + if path == "C" || path == "unsafe" { + continue // skip pseudo packages + } + imports[path] = true + } + } + } + } + return imports +} + +// ---------- Internal helpers ---------- + +// TODO(adonovan): make this a method: func (*token.File) Contains(token.Pos) +func tokenFileContainsPos(f *token.File, pos token.Pos) bool { + p := int(pos) + base := f.Base() + return base <= p && p < base+f.Size() +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/types/api.go b/Godeps/_workspace/src/golang.org/x/tools/go/types/api.go new file mode 100644 index 0000000000..27bafef389 --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/types/api.go @@ -0,0 +1,365 @@ +// Copyright 2012 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// Package types declares the data types and implements +// the algorithms for type-checking of Go packages. +// Use Check and Config.Check to invoke the type-checker. +// +// Type-checking consists of several interdependent phases: +// +// Name resolution maps each identifier (ast.Ident) in the program to the +// language object (Object) it denotes. +// Use Info.{Defs,Uses,Implicits} for the results of name resolution. +// +// Constant folding computes the exact constant value (exact.Value) for +// every expression (ast.Expr) that is a compile-time constant. +// Use Info.Types[expr].Value for the results of constant folding. +// +// Type inference computes the type (Type) of every expression (ast.Expr) +// and checks for compliance with the language specification. +// Use Info.Types[expr].Type for the results of type inference. +// +package types + +import ( + "bytes" + "fmt" + "go/ast" + "go/token" + + "golang.org/x/tools/go/exact" +) + +// Check type-checks a package and returns the resulting complete package +// object, or a nil package and the first error. The package is specified +// by a list of *ast.Files and corresponding file set, and the import path +// the package is identified with. The clean path must not be empty or dot ("."). +// +// For more control over type-checking and results, use Config.Check. +func Check(path string, fset *token.FileSet, files []*ast.File) (*Package, error) { + var conf Config + pkg, err := conf.Check(path, fset, files, nil) + if err != nil { + return nil, err + } + return pkg, nil +} + +// An Error describes a type-checking error; it implements the error interface. +// A "soft" error is an error that still permits a valid interpretation of a +// package (such as "unused variable"); "hard" errors may lead to unpredictable +// behavior if ignored. +type Error struct { + Fset *token.FileSet // file set for interpretation of Pos + Pos token.Pos // error position + Msg string // error message + Soft bool // if set, error is "soft" +} + +// Error returns an error string formatted as follows: +// filename:line:column: message +func (err Error) Error() string { + return fmt.Sprintf("%s: %s", err.Fset.Position(err.Pos), err.Msg) +} + +// An importer resolves import paths to Packages. +// The imports map records packages already known, +// indexed by package path. The type-checker +// will invoke Import with Config.Packages. +// An importer must determine the canonical package path and +// check imports to see if it is already present in the map. +// If so, the Importer can return the map entry. Otherwise, +// the importer must load the package data for the given path +// into a new *Package, record it in imports map, and return +// the package. +// TODO(gri) Need to be clearer about requirements of completeness. +type Importer func(map[string]*Package, string) (*Package, error) + +// A Config specifies the configuration for type checking. +// The zero value for Config is a ready-to-use default configuration. +type Config struct { + // If IgnoreFuncBodies is set, function bodies are not + // type-checked. + IgnoreFuncBodies bool + + // If FakeImportC is set, `import "C"` (for packages requiring Cgo) + // declares an empty "C" package and errors are omitted for qualified + // identifiers referring to package C (which won't find an object). + // This feature is intended for the standard library cmd/api tool. + // + // Caution: Effects may be unpredictable due to follow-up errors. + // Do not use casually! + FakeImportC bool + + // Packages is used to look up (and thus canonicalize) packages by + // package path. If Packages is nil, it is set to a new empty map. + // During type-checking, imported packages are added to the map. + Packages map[string]*Package + + // If Error != nil, it is called with each error found + // during type checking; err has dynamic type Error. + // Secondary errors (for instance, to enumerate all types + // involved in an invalid recursive type declaration) have + // error strings that start with a '\t' character. + // If Error == nil, type-checking stops with the first + // error found. + Error func(err error) + + // If Import != nil, it is called for each imported package. + // Otherwise, DefaultImport is called. + Import Importer + + // If Sizes != nil, it provides the sizing functions for package unsafe. + // Otherwise &StdSizes{WordSize: 8, MaxAlign: 8} is used instead. + Sizes Sizes + + // If DisableUnusedImportCheck is set, packages are not checked + // for unused imports. + DisableUnusedImportCheck bool +} + +// DefaultImport is the default importer invoked if Config.Import == nil. +// The declaration: +// +// import _ "golang.org/x/tools/go/gcimporter" +// +// in a client of go/types will initialize DefaultImport to gcimporter.Import. +var DefaultImport Importer + +// Info holds result type information for a type-checked package. +// Only the information for which a map is provided is collected. +// If the package has type errors, the collected information may +// be incomplete. +type Info struct { + // Types maps expressions to their types, and for constant + // expressions, their values. Invalid expressions are omitted. + // + // For (possibly parenthesized) identifiers denoting built-in + // functions, the recorded signatures are call-site specific: + // if the call result is not a constant, the recorded type is + // an argument-specific signature. Otherwise, the recorded type + // is invalid. + // + // Identifiers on the lhs of declarations (i.e., the identifiers + // which are being declared) are collected in the Defs map. + // Identifiers denoting packages are collected in the Uses maps. + Types map[ast.Expr]TypeAndValue + + // Defs maps identifiers to the objects they define (including + // package names, dots "." of dot-imports, and blank "_" identifiers). + // For identifiers that do not denote objects (e.g., the package name + // in package clauses, or symbolic variables t in t := x.(type) of + // type switch headers), the corresponding objects are nil. + // + // For an anonymous field, Defs returns the field *Var it defines. + // + // Invariant: Defs[id] == nil || Defs[id].Pos() == id.Pos() + Defs map[*ast.Ident]Object + + // Uses maps identifiers to the objects they denote. + // + // For an anonymous field, Uses returns the *TypeName it denotes. + // + // Invariant: Uses[id].Pos() != id.Pos() + Uses map[*ast.Ident]Object + + // Implicits maps nodes to their implicitly declared objects, if any. + // The following node and object types may appear: + // + // node declared object + // + // *ast.ImportSpec *PkgName for dot-imports and imports without renames + // *ast.CaseClause type-specific *Var for each type switch case clause (incl. default) + // *ast.Field anonymous struct field or parameter *Var + // + Implicits map[ast.Node]Object + + // Selections maps selector expressions (excluding qualified identifiers) + // to their corresponding selections. + Selections map[*ast.SelectorExpr]*Selection + + // Scopes maps ast.Nodes to the scopes they define. Package scopes are not + // associated with a specific node but with all files belonging to a package. + // Thus, the package scope can be found in the type-checked Package object. + // Scopes nest, with the Universe scope being the outermost scope, enclosing + // the package scope, which contains (one or more) files scopes, which enclose + // function scopes which in turn enclose statement and function literal scopes. + // Note that even though package-level functions are declared in the package + // scope, the function scopes are embedded in the file scope of the file + // containing the function declaration. + // + // The following node types may appear in Scopes: + // + // *ast.File + // *ast.FuncType + // *ast.BlockStmt + // *ast.IfStmt + // *ast.SwitchStmt + // *ast.TypeSwitchStmt + // *ast.CaseClause + // *ast.CommClause + // *ast.ForStmt + // *ast.RangeStmt + // + Scopes map[ast.Node]*Scope + + // InitOrder is the list of package-level initializers in the order in which + // they must be executed. Initializers referring to variables related by an + // initialization dependency appear in topological order, the others appear + // in source order. Variables without an initialization expression do not + // appear in this list. + InitOrder []*Initializer +} + +// TypeOf returns the type of expression e, or nil if not found. +// Precondition: the Types, Uses and Defs maps are populated. +// +func (info *Info) TypeOf(e ast.Expr) Type { + if t, ok := info.Types[e]; ok { + return t.Type + } + if id, _ := e.(*ast.Ident); id != nil { + if obj := info.ObjectOf(id); obj != nil { + return obj.Type() + } + } + return nil +} + +// ObjectOf returns the object denoted by the specified id, +// or nil if not found. +// +// If id is an anonymous struct field, ObjectOf returns the field (*Var) +// it uses, not the type (*TypeName) it defines. +// +// Precondition: the Uses and Defs maps are populated. +// +func (info *Info) ObjectOf(id *ast.Ident) Object { + if obj, _ := info.Defs[id]; obj != nil { + return obj + } + return info.Uses[id] +} + +// TypeAndValue reports the type and value (for constants) +// of the corresponding expression. +type TypeAndValue struct { + mode operandMode + Type Type + Value exact.Value +} + +// TODO(gri) Consider eliminating the IsVoid predicate. Instead, report +// "void" values as regular values but with the empty tuple type. + +// IsVoid reports whether the corresponding expression +// is a function call without results. +func (tv TypeAndValue) IsVoid() bool { + return tv.mode == novalue +} + +// IsType reports whether the corresponding expression specifies a type. +func (tv TypeAndValue) IsType() bool { + return tv.mode == typexpr +} + +// IsBuiltin reports whether the corresponding expression denotes +// a (possibly parenthesized) built-in function. +func (tv TypeAndValue) IsBuiltin() bool { + return tv.mode == builtin +} + +// IsValue reports whether the corresponding expression is a value. +// Builtins are not considered values. Constant values have a non- +// nil Value. +func (tv TypeAndValue) IsValue() bool { + switch tv.mode { + case constant, variable, mapindex, value, commaok: + return true + } + return false +} + +// IsNil reports whether the corresponding expression denotes the +// predeclared value nil. +func (tv TypeAndValue) IsNil() bool { + return tv.mode == value && tv.Type == Typ[UntypedNil] +} + +// Addressable reports whether the corresponding expression +// is addressable (http://golang.org/ref/spec#Address_operators). +func (tv TypeAndValue) Addressable() bool { + return tv.mode == variable +} + +// Assignable reports whether the corresponding expression +// is assignable to (provided a value of the right type). +func (tv TypeAndValue) Assignable() bool { + return tv.mode == variable || tv.mode == mapindex +} + +// HasOk reports whether the corresponding expression may be +// used on the lhs of a comma-ok assignment. +func (tv TypeAndValue) HasOk() bool { + return tv.mode == commaok || tv.mode == mapindex +} + +// An Initializer describes a package-level variable, or a list of variables in case +// of a multi-valued initialization expression, and the corresponding initialization +// expression. +type Initializer struct { + Lhs []*Var // var Lhs = Rhs + Rhs ast.Expr +} + +func (init *Initializer) String() string { + var buf bytes.Buffer + for i, lhs := range init.Lhs { + if i > 0 { + buf.WriteString(", ") + } + buf.WriteString(lhs.Name()) + } + buf.WriteString(" = ") + WriteExpr(&buf, init.Rhs) + return buf.String() +} + +// Check type-checks a package and returns the resulting package object, +// the first error if any, and if info != nil, additional type information. +// The package is marked as complete if no errors occurred, otherwise it is +// incomplete. See Config.Error for controlling behavior in the presence of +// errors. +// +// The package is specified by a list of *ast.Files and corresponding +// file set, and the package path the package is identified with. +// The clean path must not be empty or dot ("."). +func (conf *Config) Check(path string, fset *token.FileSet, files []*ast.File, info *Info) (*Package, error) { + pkg := NewPackage(path, "") + return pkg, NewChecker(conf, fset, pkg, info).Files(files) +} + +// AssertableTo reports whether a value of type V can be asserted to have type T. +func AssertableTo(V *Interface, T Type) bool { + m, _ := assertableTo(V, T) + return m == nil +} + +// AssignableTo reports whether a value of type V is assignable to a variable of type T. +func AssignableTo(V, T Type) bool { + x := operand{mode: value, typ: V} + return x.assignableTo(nil, T) // config not needed for non-constant x +} + +// ConvertibleTo reports whether a value of type V is convertible to a value of type T. +func ConvertibleTo(V, T Type) bool { + x := operand{mode: value, typ: V} + return x.convertibleTo(nil, T) // config not needed for non-constant x +} + +// Implements reports whether type V implements interface T. +func Implements(V Type, T *Interface) bool { + f, _ := MissingMethod(V, T, true) + return f == nil +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/types/api_test.go b/Godeps/_workspace/src/golang.org/x/tools/go/types/api_test.go new file mode 100644 index 0000000000..96e10d4d95 --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/types/api_test.go @@ -0,0 +1,1059 @@ +// Copyright 2013 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package types_test + +import ( + "bytes" + "fmt" + "go/ast" + "go/parser" + "go/token" + "reflect" + "regexp" + "runtime" + "strings" + "testing" + + _ "golang.org/x/tools/go/gcimporter" + . "golang.org/x/tools/go/types" +) + +// skipSpecialPlatforms causes the test to be skipped for platforms where +// builders (build.golang.org) don't have access to compiled packages for +// import. +func skipSpecialPlatforms(t *testing.T) { + switch platform := runtime.GOOS + "-" + runtime.GOARCH; platform { + case "nacl-amd64p32", + "nacl-386", + "nacl-arm", + "darwin-arm", + "darwin-arm64": + t.Skipf("no compiled packages available for import on %s", platform) + } +} + +func pkgFor(path, source string, info *Info) (*Package, error) { + fset := token.NewFileSet() + f, err := parser.ParseFile(fset, path, source, 0) + if err != nil { + return nil, err + } + + var conf Config + return conf.Check(f.Name.Name, fset, []*ast.File{f}, info) +} + +func mustTypecheck(t *testing.T, path, source string, info *Info) string { + pkg, err := pkgFor(path, source, info) + if err != nil { + name := path + if pkg != nil { + name = "package " + pkg.Name() + } + t.Fatalf("%s: didn't type-check (%s)", name, err) + } + return pkg.Name() +} + +func TestValuesInfo(t *testing.T) { + var tests = []struct { + src string + expr string // constant expression + typ string // constant type + val string // constant value + }{ + {`package a0; const _ = false`, `false`, `untyped bool`, `false`}, + {`package a1; const _ = 0`, `0`, `untyped int`, `0`}, + {`package a2; const _ = 'A'`, `'A'`, `untyped rune`, `65`}, + {`package a3; const _ = 0.`, `0.`, `untyped float`, `0`}, + {`package a4; const _ = 0i`, `0i`, `untyped complex`, `0`}, + {`package a5; const _ = "foo"`, `"foo"`, `untyped string`, `"foo"`}, + + {`package b0; var _ = false`, `false`, `bool`, `false`}, + {`package b1; var _ = 0`, `0`, `int`, `0`}, + {`package b2; var _ = 'A'`, `'A'`, `rune`, `65`}, + {`package b3; var _ = 0.`, `0.`, `float64`, `0`}, + {`package b4; var _ = 0i`, `0i`, `complex128`, `0`}, + {`package b5; var _ = "foo"`, `"foo"`, `string`, `"foo"`}, + + {`package c0a; var _ = bool(false)`, `false`, `bool`, `false`}, + {`package c0b; var _ = bool(false)`, `bool(false)`, `bool`, `false`}, + {`package c0c; type T bool; var _ = T(false)`, `T(false)`, `c0c.T`, `false`}, + + {`package c1a; var _ = int(0)`, `0`, `int`, `0`}, + {`package c1b; var _ = int(0)`, `int(0)`, `int`, `0`}, + {`package c1c; type T int; var _ = T(0)`, `T(0)`, `c1c.T`, `0`}, + + {`package c2a; var _ = rune('A')`, `'A'`, `rune`, `65`}, + {`package c2b; var _ = rune('A')`, `rune('A')`, `rune`, `65`}, + {`package c2c; type T rune; var _ = T('A')`, `T('A')`, `c2c.T`, `65`}, + + {`package c3a; var _ = float32(0.)`, `0.`, `float32`, `0`}, + {`package c3b; var _ = float32(0.)`, `float32(0.)`, `float32`, `0`}, + {`package c3c; type T float32; var _ = T(0.)`, `T(0.)`, `c3c.T`, `0`}, + + {`package c4a; var _ = complex64(0i)`, `0i`, `complex64`, `0`}, + {`package c4b; var _ = complex64(0i)`, `complex64(0i)`, `complex64`, `0`}, + {`package c4c; type T complex64; var _ = T(0i)`, `T(0i)`, `c4c.T`, `0`}, + + {`package c5a; var _ = string("foo")`, `"foo"`, `string`, `"foo"`}, + {`package c5b; var _ = string("foo")`, `string("foo")`, `string`, `"foo"`}, + {`package c5c; type T string; var _ = T("foo")`, `T("foo")`, `c5c.T`, `"foo"`}, + + {`package d0; var _ = []byte("foo")`, `"foo"`, `string`, `"foo"`}, + {`package d1; var _ = []byte(string("foo"))`, `"foo"`, `string`, `"foo"`}, + {`package d2; var _ = []byte(string("foo"))`, `string("foo")`, `string`, `"foo"`}, + {`package d3; type T []byte; var _ = T("foo")`, `"foo"`, `string`, `"foo"`}, + + {`package e0; const _ = float32( 1e-200)`, `float32(1e-200)`, `float32`, `0`}, + {`package e1; const _ = float32(-1e-200)`, `float32(-1e-200)`, `float32`, `0`}, + {`package e2; const _ = float64( 1e-2000)`, `float64(1e-2000)`, `float64`, `0`}, + {`package e3; const _ = float64(-1e-2000)`, `float64(-1e-2000)`, `float64`, `0`}, + {`package e4; const _ = complex64( 1e-200)`, `complex64(1e-200)`, `complex64`, `0`}, + {`package e5; const _ = complex64(-1e-200)`, `complex64(-1e-200)`, `complex64`, `0`}, + {`package e6; const _ = complex128( 1e-2000)`, `complex128(1e-2000)`, `complex128`, `0`}, + {`package e7; const _ = complex128(-1e-2000)`, `complex128(-1e-2000)`, `complex128`, `0`}, + + {`package f0 ; var _ float32 = 1e-200`, `1e-200`, `float32`, `0`}, + {`package f1 ; var _ float32 = -1e-200`, `-1e-200`, `float32`, `0`}, + {`package f2a; var _ float64 = 1e-2000`, `1e-2000`, `float64`, `0`}, + {`package f3a; var _ float64 = -1e-2000`, `-1e-2000`, `float64`, `0`}, + {`package f2b; var _ = 1e-2000`, `1e-2000`, `float64`, `0`}, + {`package f3b; var _ = -1e-2000`, `-1e-2000`, `float64`, `0`}, + {`package f4 ; var _ complex64 = 1e-200 `, `1e-200`, `complex64`, `0`}, + {`package f5 ; var _ complex64 = -1e-200 `, `-1e-200`, `complex64`, `0`}, + {`package f6a; var _ complex128 = 1e-2000i`, `1e-2000i`, `complex128`, `0`}, + {`package f7a; var _ complex128 = -1e-2000i`, `-1e-2000i`, `complex128`, `0`}, + {`package f6b; var _ = 1e-2000i`, `1e-2000i`, `complex128`, `0`}, + {`package f7b; var _ = -1e-2000i`, `-1e-2000i`, `complex128`, `0`}, + } + + for _, test := range tests { + info := Info{ + Types: make(map[ast.Expr]TypeAndValue), + } + name := mustTypecheck(t, "ValuesInfo", test.src, &info) + + // look for constant expression + var expr ast.Expr + for e := range info.Types { + if ExprString(e) == test.expr { + expr = e + break + } + } + if expr == nil { + t.Errorf("package %s: no expression found for %s", name, test.expr) + continue + } + tv := info.Types[expr] + + // check that type is correct + if got := tv.Type.String(); got != test.typ { + t.Errorf("package %s: got type %s; want %s", name, got, test.typ) + continue + } + + // check that value is correct + if got := tv.Value.String(); got != test.val { + t.Errorf("package %s: got value %s; want %s", name, got, test.val) + } + } +} + +func TestTypesInfo(t *testing.T) { + var tests = []struct { + src string + expr string // expression + typ string // value type + }{ + // single-valued expressions of untyped constants + {`package b0; var x interface{} = false`, `false`, `bool`}, + {`package b1; var x interface{} = 0`, `0`, `int`}, + {`package b2; var x interface{} = 0.`, `0.`, `float64`}, + {`package b3; var x interface{} = 0i`, `0i`, `complex128`}, + {`package b4; var x interface{} = "foo"`, `"foo"`, `string`}, + + // comma-ok expressions + {`package p0; var x interface{}; var _, _ = x.(int)`, + `x.(int)`, + `(int, bool)`, + }, + {`package p1; var x interface{}; func _() { _, _ = x.(int) }`, + `x.(int)`, + `(int, bool)`, + }, + // TODO(gri): uncomment if we accept issue 8189. + // {`package p2; type mybool bool; var m map[string]complex128; var b mybool; func _() { _, b = m["foo"] }`, + // `m["foo"]`, + // `(complex128, p2.mybool)`, + // }, + // TODO(gri): remove if we accept issue 8189. + {`package p2; var m map[string]complex128; var b bool; func _() { _, b = m["foo"] }`, + `m["foo"]`, + `(complex128, bool)`, + }, + {`package p3; var c chan string; var _, _ = <-c`, + `<-c`, + `(string, bool)`, + }, + + // issue 6796 + {`package issue6796_a; var x interface{}; var _, _ = (x.(int))`, + `x.(int)`, + `(int, bool)`, + }, + {`package issue6796_b; var c chan string; var _, _ = (<-c)`, + `(<-c)`, + `(string, bool)`, + }, + {`package issue6796_c; var c chan string; var _, _ = (<-c)`, + `<-c`, + `(string, bool)`, + }, + {`package issue6796_d; var c chan string; var _, _ = ((<-c))`, + `(<-c)`, + `(string, bool)`, + }, + {`package issue6796_e; func f(c chan string) { _, _ = ((<-c)) }`, + `(<-c)`, + `(string, bool)`, + }, + + // issue 7060 + {`package issue7060_a; var ( m map[int]string; x, ok = m[0] )`, + `m[0]`, + `(string, bool)`, + }, + {`package issue7060_b; var ( m map[int]string; x, ok interface{} = m[0] )`, + `m[0]`, + `(string, bool)`, + }, + {`package issue7060_c; func f(x interface{}, ok bool, m map[int]string) { x, ok = m[0] }`, + `m[0]`, + `(string, bool)`, + }, + {`package issue7060_d; var ( ch chan string; x, ok = <-ch )`, + `<-ch`, + `(string, bool)`, + }, + {`package issue7060_e; var ( ch chan string; x, ok interface{} = <-ch )`, + `<-ch`, + `(string, bool)`, + }, + {`package issue7060_f; func f(x interface{}, ok bool, ch chan string) { x, ok = <-ch }`, + `<-ch`, + `(string, bool)`, + }, + } + + for _, test := range tests { + info := Info{Types: make(map[ast.Expr]TypeAndValue)} + name := mustTypecheck(t, "TypesInfo", test.src, &info) + + // look for expression type + var typ Type + for e, tv := range info.Types { + if ExprString(e) == test.expr { + typ = tv.Type + break + } + } + if typ == nil { + t.Errorf("package %s: no type found for %s", name, test.expr) + continue + } + + // check that type is correct + if got := typ.String(); got != test.typ { + t.Errorf("package %s: got %s; want %s", name, got, test.typ) + } + } +} + +func predString(tv TypeAndValue) string { + var buf bytes.Buffer + pred := func(b bool, s string) { + if b { + if buf.Len() > 0 { + buf.WriteString(", ") + } + buf.WriteString(s) + } + } + + pred(tv.IsVoid(), "void") + pred(tv.IsType(), "type") + pred(tv.IsBuiltin(), "builtin") + pred(tv.IsValue() && tv.Value != nil, "const") + pred(tv.IsValue() && tv.Value == nil, "value") + pred(tv.IsNil(), "nil") + pred(tv.Addressable(), "addressable") + pred(tv.Assignable(), "assignable") + pred(tv.HasOk(), "hasOk") + + if buf.Len() == 0 { + return "invalid" + } + return buf.String() +} + +func TestPredicatesInfo(t *testing.T) { + skipSpecialPlatforms(t) + + var tests = []struct { + src string + expr string + pred string + }{ + // void + {`package n0; func f() { f() }`, `f()`, `void`}, + + // types + {`package t0; type _ int`, `int`, `type`}, + {`package t1; type _ []int`, `[]int`, `type`}, + {`package t2; type _ func()`, `func()`, `type`}, + + // built-ins + {`package b0; var _ = len("")`, `len`, `builtin`}, + {`package b1; var _ = (len)("")`, `(len)`, `builtin`}, + + // constants + {`package c0; var _ = 42`, `42`, `const`}, + {`package c1; var _ = "foo" + "bar"`, `"foo" + "bar"`, `const`}, + {`package c2; const (i = 1i; _ = i)`, `i`, `const`}, + + // values + {`package v0; var (a, b int; _ = a + b)`, `a + b`, `value`}, + {`package v1; var _ = &[]int{1}`, `([]int literal)`, `value`}, + {`package v2; var _ = func(){}`, `(func() literal)`, `value`}, + {`package v4; func f() { _ = f }`, `f`, `value`}, + {`package v3; var _ *int = nil`, `nil`, `value, nil`}, + {`package v3; var _ *int = (nil)`, `(nil)`, `value, nil`}, + + // addressable (and thus assignable) operands + {`package a0; var (x int; _ = x)`, `x`, `value, addressable, assignable`}, + {`package a1; var (p *int; _ = *p)`, `*p`, `value, addressable, assignable`}, + {`package a2; var (s []int; _ = s[0])`, `s[0]`, `value, addressable, assignable`}, + {`package a3; var (s struct{f int}; _ = s.f)`, `s.f`, `value, addressable, assignable`}, + {`package a4; var (a [10]int; _ = a[0])`, `a[0]`, `value, addressable, assignable`}, + {`package a5; func _(x int) { _ = x }`, `x`, `value, addressable, assignable`}, + {`package a6; func _()(x int) { _ = x; return }`, `x`, `value, addressable, assignable`}, + {`package a7; type T int; func (x T) _() { _ = x }`, `x`, `value, addressable, assignable`}, + // composite literals are not addressable + + // assignable but not addressable values + {`package s0; var (m map[int]int; _ = m[0])`, `m[0]`, `value, assignable, hasOk`}, + {`package s1; var (m map[int]int; _, _ = m[0])`, `m[0]`, `value, assignable, hasOk`}, + + // hasOk expressions + {`package k0; var (ch chan int; _ = <-ch)`, `<-ch`, `value, hasOk`}, + {`package k1; var (ch chan int; _, _ = <-ch)`, `<-ch`, `value, hasOk`}, + + // missing entries + // - package names are collected in the Uses map + // - identifiers being declared are collected in the Defs map + {`package m0; import "os"; func _() { _ = os.Stdout }`, `os`, ``}, + {`package m1; import p "os"; func _() { _ = p.Stdout }`, `p`, ``}, + {`package m2; const c = 0`, `c`, ``}, + {`package m3; type T int`, `T`, ``}, + {`package m4; var v int`, `v`, ``}, + {`package m5; func f() {}`, `f`, ``}, + {`package m6; func _(x int) {}`, `x`, ``}, + {`package m6; func _()(x int) { return }`, `x`, ``}, + {`package m6; type T int; func (x T) _() {}`, `x`, ``}, + } + + for _, test := range tests { + info := Info{Types: make(map[ast.Expr]TypeAndValue)} + name := mustTypecheck(t, "PredicatesInfo", test.src, &info) + + // look for expression predicates + got := "" + for e, tv := range info.Types { + //println(name, ExprString(e)) + if ExprString(e) == test.expr { + got = predString(tv) + break + } + } + + if got != test.pred { + t.Errorf("package %s: got %s; want %s", name, got, test.pred) + } + } +} + +func TestScopesInfo(t *testing.T) { + skipSpecialPlatforms(t) + + var tests = []struct { + src string + scopes []string // list of scope descriptors of the form kind:varlist + }{ + {`package p0`, []string{ + "file:", + }}, + {`package p1; import ( "fmt"; m "math"; _ "os" ); var ( _ = fmt.Println; _ = m.Pi )`, []string{ + "file:fmt m", + }}, + {`package p2; func _() {}`, []string{ + "file:", "func:", + }}, + {`package p3; func _(x, y int) {}`, []string{ + "file:", "func:x y", + }}, + {`package p4; func _(x, y int) { x, z := 1, 2; _ = z }`, []string{ + "file:", "func:x y z", // redeclaration of x + }}, + {`package p5; func _(x, y int) (u, _ int) { return }`, []string{ + "file:", "func:u x y", + }}, + {`package p6; func _() { { var x int; _ = x } }`, []string{ + "file:", "func:", "block:x", + }}, + {`package p7; func _() { if true {} }`, []string{ + "file:", "func:", "if:", "block:", + }}, + {`package p8; func _() { if x := 0; x < 0 { y := x; _ = y } }`, []string{ + "file:", "func:", "if:x", "block:y", + }}, + {`package p9; func _() { switch x := 0; x {} }`, []string{ + "file:", "func:", "switch:x", + }}, + {`package p10; func _() { switch x := 0; x { case 1: y := x; _ = y; default: }}`, []string{ + "file:", "func:", "switch:x", "case:y", "case:", + }}, + {`package p11; func _(t interface{}) { switch t.(type) {} }`, []string{ + "file:", "func:t", "type switch:", + }}, + {`package p12; func _(t interface{}) { switch t := t; t.(type) {} }`, []string{ + "file:", "func:t", "type switch:t", + }}, + {`package p13; func _(t interface{}) { switch x := t.(type) { case int: _ = x } }`, []string{ + "file:", "func:t", "type switch:", "case:x", // x implicitly declared + }}, + {`package p14; func _() { select{} }`, []string{ + "file:", "func:", + }}, + {`package p15; func _(c chan int) { select{ case <-c: } }`, []string{ + "file:", "func:c", "comm:", + }}, + {`package p16; func _(c chan int) { select{ case i := <-c: x := i; _ = x} }`, []string{ + "file:", "func:c", "comm:i x", + }}, + {`package p17; func _() { for{} }`, []string{ + "file:", "func:", "for:", "block:", + }}, + {`package p18; func _(n int) { for i := 0; i < n; i++ { _ = i } }`, []string{ + "file:", "func:n", "for:i", "block:", + }}, + {`package p19; func _(a []int) { for i := range a { _ = i} }`, []string{ + "file:", "func:a", "range:i", "block:", + }}, + {`package p20; var s int; func _(a []int) { for i, x := range a { s += x; _ = i } }`, []string{ + "file:", "func:a", "range:i x", "block:", + }}, + } + + for _, test := range tests { + info := Info{Scopes: make(map[ast.Node]*Scope)} + name := mustTypecheck(t, "ScopesInfo", test.src, &info) + + // number of scopes must match + if len(info.Scopes) != len(test.scopes) { + t.Errorf("package %s: got %d scopes; want %d", name, len(info.Scopes), len(test.scopes)) + } + + // scope descriptions must match + for node, scope := range info.Scopes { + kind := "" + switch node.(type) { + case *ast.File: + kind = "file" + case *ast.FuncType: + kind = "func" + case *ast.BlockStmt: + kind = "block" + case *ast.IfStmt: + kind = "if" + case *ast.SwitchStmt: + kind = "switch" + case *ast.TypeSwitchStmt: + kind = "type switch" + case *ast.CaseClause: + kind = "case" + case *ast.CommClause: + kind = "comm" + case *ast.ForStmt: + kind = "for" + case *ast.RangeStmt: + kind = "range" + } + + // look for matching scope description + desc := kind + ":" + strings.Join(scope.Names(), " ") + found := false + for _, d := range test.scopes { + if desc == d { + found = true + break + } + } + if !found { + t.Errorf("package %s: no matching scope found for %s", name, desc) + } + } + } +} + +func TestInitOrderInfo(t *testing.T) { + var tests = []struct { + src string + inits []string + }{ + {`package p0; var (x = 1; y = x)`, []string{ + "x = 1", "y = x", + }}, + {`package p1; var (a = 1; b = 2; c = 3)`, []string{ + "a = 1", "b = 2", "c = 3", + }}, + {`package p2; var (a, b, c = 1, 2, 3)`, []string{ + "a = 1", "b = 2", "c = 3", + }}, + {`package p3; var _ = f(); func f() int { return 1 }`, []string{ + "_ = f()", // blank var + }}, + {`package p4; var (a = 0; x = y; y = z; z = 0)`, []string{ + "a = 0", "z = 0", "y = z", "x = y", + }}, + {`package p5; var (a, _ = m[0]; m map[int]string)`, []string{ + "a, _ = m[0]", // blank var + }}, + {`package p6; var a, b = f(); func f() (_, _ int) { return z, z }; var z = 0`, []string{ + "z = 0", "a, b = f()", + }}, + {`package p7; var (a = func() int { return b }(); b = 1)`, []string{ + "b = 1", "a = (func() int literal)()", + }}, + {`package p8; var (a, b = func() (_, _ int) { return c, c }(); c = 1)`, []string{ + "c = 1", "a, b = (func() (_, _ int) literal)()", + }}, + {`package p9; type T struct{}; func (T) m() int { _ = y; return 0 }; var x, y = T.m, 1`, []string{ + "y = 1", "x = T.m", + }}, + {`package p10; var (d = c + b; a = 0; b = 0; c = 0)`, []string{ + "a = 0", "b = 0", "c = 0", "d = c + b", + }}, + {`package p11; var (a = e + c; b = d + c; c = 0; d = 0; e = 0)`, []string{ + "c = 0", "d = 0", "b = d + c", "e = 0", "a = e + c", + }}, + // emit an initializer for n:1 initializations only once (not for each node + // on the lhs which may appear in different order in the dependency graph) + {`package p12; var (a = x; b = 0; x, y = m[0]; m map[int]int)`, []string{ + "b = 0", "x, y = m[0]", "a = x", + }}, + // test case from spec section on package initialization + {`package p12 + + var ( + a = c + b + b = f() + c = f() + d = 3 + ) + + func f() int { + d++ + return d + }`, []string{ + "d = 3", "b = f()", "c = f()", "a = c + b", + }}, + // test case for issue 7131 + {`package main + + var counter int + func next() int { counter++; return counter } + + var _ = makeOrder() + func makeOrder() []int { return []int{f, b, d, e, c, a} } + + var a = next() + var b, c = next(), next() + var d, e, f = next(), next(), next() + `, []string{ + "a = next()", "b = next()", "c = next()", "d = next()", "e = next()", "f = next()", "_ = makeOrder()", + }}, + } + + for _, test := range tests { + info := Info{} + name := mustTypecheck(t, "InitOrderInfo", test.src, &info) + + // number of initializers must match + if len(info.InitOrder) != len(test.inits) { + t.Errorf("package %s: got %d initializers; want %d", name, len(info.InitOrder), len(test.inits)) + continue + } + + // initializers must match + for i, want := range test.inits { + got := info.InitOrder[i].String() + if got != want { + t.Errorf("package %s, init %d: got %s; want %s", name, i, got, want) + continue + } + } + } +} + +func TestMultiFileInitOrder(t *testing.T) { + fset := token.NewFileSet() + mustParse := func(src string) *ast.File { + f, err := parser.ParseFile(fset, "main", src, 0) + if err != nil { + t.Fatal(err) + } + return f + } + + fileA := mustParse(`package main; var a = 1`) + fileB := mustParse(`package main; var b = 2`) + + // The initialization order must not depend on the parse + // order of the files, only on the presentation order to + // the type-checker. + for _, test := range []struct { + files []*ast.File + want string + }{ + {[]*ast.File{fileA, fileB}, "[a = 1 b = 2]"}, + {[]*ast.File{fileB, fileA}, "[b = 2 a = 1]"}, + } { + var info Info + if _, err := new(Config).Check("main", fset, test.files, &info); err != nil { + t.Fatal(err) + } + if got := fmt.Sprint(info.InitOrder); got != test.want { + t.Fatalf("got %s; want %s", got, test.want) + } + } +} + +func TestFiles(t *testing.T) { + var sources = []string{ + "package p; type T struct{}; func (T) m1() {}", + "package p; func (T) m2() {}; var x interface{ m1(); m2() } = T{}", + "package p; func (T) m3() {}; var y interface{ m1(); m2(); m3() } = T{}", + "package p", + } + + var conf Config + fset := token.NewFileSet() + pkg := NewPackage("p", "p") + var info Info + check := NewChecker(&conf, fset, pkg, &info) + + for i, src := range sources { + filename := fmt.Sprintf("sources%d", i) + f, err := parser.ParseFile(fset, filename, src, 0) + if err != nil { + t.Fatal(err) + } + if err := check.Files([]*ast.File{f}); err != nil { + t.Error(err) + } + } + + // check InitOrder is [x y] + var vars []string + for _, init := range info.InitOrder { + for _, v := range init.Lhs { + vars = append(vars, v.Name()) + } + } + if got, want := fmt.Sprint(vars), "[x y]"; got != want { + t.Errorf("InitOrder == %s, want %s", got, want) + } +} + +func TestSelection(t *testing.T) { + selections := make(map[*ast.SelectorExpr]*Selection) + + fset := token.NewFileSet() + conf := Config{ + Packages: make(map[string]*Package), + Import: func(imports map[string]*Package, path string) (*Package, error) { + return imports[path], nil + }, + } + makePkg := func(path, src string) { + f, err := parser.ParseFile(fset, path+".go", src, 0) + if err != nil { + t.Fatal(err) + } + pkg, err := conf.Check(path, fset, []*ast.File{f}, &Info{Selections: selections}) + if err != nil { + t.Fatal(err) + } + conf.Packages[path] = pkg + } + + const libSrc = ` +package lib +type T float64 +const C T = 3 +var V T +func F() {} +func (T) M() {} +` + const mainSrc = ` +package main +import "lib" + +type A struct { + *B + C +} + +type B struct { + b int +} + +func (B) f(int) + +type C struct { + c int +} + +func (C) g() +func (*C) h() + +func main() { + // qualified identifiers + var _ lib.T + _ = lib.C + _ = lib.F + _ = lib.V + _ = lib.T.M + + // fields + _ = A{}.B + _ = new(A).B + + _ = A{}.C + _ = new(A).C + + _ = A{}.b + _ = new(A).b + + _ = A{}.c + _ = new(A).c + + // methods + _ = A{}.f + _ = new(A).f + _ = A{}.g + _ = new(A).g + _ = new(A).h + + _ = B{}.f + _ = new(B).f + + _ = C{}.g + _ = new(C).g + _ = new(C).h + + // method expressions + _ = A.f + _ = (*A).f + _ = B.f + _ = (*B).f +}` + + wantOut := map[string][2]string{ + "lib.T.M": {"method expr (lib.T) M(lib.T)", ".[0]"}, + + "A{}.B": {"field (main.A) B *main.B", ".[0]"}, + "new(A).B": {"field (*main.A) B *main.B", "->[0]"}, + "A{}.C": {"field (main.A) C main.C", ".[1]"}, + "new(A).C": {"field (*main.A) C main.C", "->[1]"}, + "A{}.b": {"field (main.A) b int", "->[0 0]"}, + "new(A).b": {"field (*main.A) b int", "->[0 0]"}, + "A{}.c": {"field (main.A) c int", ".[1 0]"}, + "new(A).c": {"field (*main.A) c int", "->[1 0]"}, + + "A{}.f": {"method (main.A) f(int)", "->[0 0]"}, + "new(A).f": {"method (*main.A) f(int)", "->[0 0]"}, + "A{}.g": {"method (main.A) g()", ".[1 0]"}, + "new(A).g": {"method (*main.A) g()", "->[1 0]"}, + "new(A).h": {"method (*main.A) h()", "->[1 1]"}, // TODO(gri) should this report .[1 1] ? + "B{}.f": {"method (main.B) f(int)", ".[0]"}, + "new(B).f": {"method (*main.B) f(int)", "->[0]"}, + "C{}.g": {"method (main.C) g()", ".[0]"}, + "new(C).g": {"method (*main.C) g()", "->[0]"}, + "new(C).h": {"method (*main.C) h()", "->[1]"}, // TODO(gri) should this report .[1] ? + + "A.f": {"method expr (main.A) f(main.A, int)", "->[0 0]"}, + "(*A).f": {"method expr (*main.A) f(*main.A, int)", "->[0 0]"}, + "B.f": {"method expr (main.B) f(main.B, int)", ".[0]"}, + "(*B).f": {"method expr (*main.B) f(*main.B, int)", "->[0]"}, + } + + makePkg("lib", libSrc) + makePkg("main", mainSrc) + + for e, sel := range selections { + sel.String() // assertion: must not panic + + start := fset.Position(e.Pos()).Offset + end := fset.Position(e.End()).Offset + syntax := mainSrc[start:end] // (all SelectorExprs are in main, not lib) + + direct := "." + if sel.Indirect() { + direct = "->" + } + got := [2]string{ + sel.String(), + fmt.Sprintf("%s%v", direct, sel.Index()), + } + want := wantOut[syntax] + if want != got { + t.Errorf("%s: got %q; want %q", syntax, got, want) + } + delete(wantOut, syntax) + + // We must explicitly assert properties of the + // Signature's receiver since it doesn't participate + // in Identical() or String(). + sig, _ := sel.Type().(*Signature) + if sel.Kind() == MethodVal { + got := sig.Recv().Type() + want := sel.Recv() + if !Identical(got, want) { + t.Errorf("%s: Recv() = %s, want %s", syntax, got, want) + } + } else if sig != nil && sig.Recv() != nil { + t.Errorf("%s: signature has receiver %s", sig, sig.Recv().Type()) + } + } + // Assert that all wantOut entries were used exactly once. + for syntax := range wantOut { + t.Errorf("no ast.Selection found with syntax %q", syntax) + } +} + +func TestIssue8518(t *testing.T) { + fset := token.NewFileSet() + conf := Config{ + Packages: make(map[string]*Package), + Error: func(err error) { t.Log(err) }, // don't exit after first error + Import: func(imports map[string]*Package, path string) (*Package, error) { + return imports[path], nil + }, + } + makePkg := func(path, src string) { + f, err := parser.ParseFile(fset, path, src, 0) + if err != nil { + t.Fatal(err) + } + pkg, _ := conf.Check(path, fset, []*ast.File{f}, nil) // errors logged via conf.Error + conf.Packages[path] = pkg + } + + const libSrc = ` +package a +import "missing" +const C1 = foo +const C2 = missing.C +` + + const mainSrc = ` +package main +import "a" +var _ = a.C1 +var _ = a.C2 +` + + makePkg("a", libSrc) + makePkg("main", mainSrc) // don't crash when type-checking this package +} + +func TestLookupFieldOrMethod(t *testing.T) { + // Test cases assume a lookup of the form a.f or x.f, where a stands for an + // addressable value, and x for a non-addressable value (even though a variable + // for ease of test case writing). + var tests = []struct { + src string + found bool + index []int + indirect bool + }{ + // field lookups + {"var x T; type T struct{}", false, nil, false}, + {"var x T; type T struct{ f int }", true, []int{0}, false}, + {"var x T; type T struct{ a, b, f, c int }", true, []int{2}, false}, + + // method lookups + {"var a T; type T struct{}; func (T) f() {}", true, []int{0}, false}, + {"var a *T; type T struct{}; func (T) f() {}", true, []int{0}, true}, + {"var a T; type T struct{}; func (*T) f() {}", true, []int{0}, false}, + {"var a *T; type T struct{}; func (*T) f() {}", true, []int{0}, true}, // TODO(gri) should this report indirect = false? + + // collisions + {"type ( E1 struct{ f int }; E2 struct{ f int }; x struct{ E1; *E2 })", false, []int{1, 0}, false}, + {"type ( E1 struct{ f int }; E2 struct{}; x struct{ E1; *E2 }); func (E2) f() {}", false, []int{1, 0}, false}, + + // outside methodset + // (*T).f method exists, but value of type T is not addressable + {"var x T; type T struct{}; func (*T) f() {}", false, nil, true}, + } + + for _, test := range tests { + pkg, err := pkgFor("test", "package p;"+test.src, nil) + if err != nil { + t.Errorf("%s: incorrect test case: %s", test.src, err) + continue + } + + obj := pkg.Scope().Lookup("a") + if obj == nil { + if obj = pkg.Scope().Lookup("x"); obj == nil { + t.Errorf("%s: incorrect test case - no object a or x", test.src) + continue + } + } + + f, index, indirect := LookupFieldOrMethod(obj.Type(), obj.Name() == "a", pkg, "f") + if (f != nil) != test.found { + if f == nil { + t.Errorf("%s: got no object; want one", test.src) + } else { + t.Errorf("%s: got object = %v; want none", test.src, f) + } + } + if !sameSlice(index, test.index) { + t.Errorf("%s: got index = %v; want %v", test.src, index, test.index) + } + if indirect != test.indirect { + t.Errorf("%s: got indirect = %v; want %v", test.src, indirect, test.indirect) + } + } +} + +func sameSlice(a, b []int) bool { + if len(a) != len(b) { + return false + } + for i, x := range a { + if x != b[i] { + return false + } + } + return true +} + +// TestScopeLookupParent ensures that (*Scope).LookupParent returns +// the correct result at various positions with the source. +func TestScopeLookupParent(t *testing.T) { + fset := token.NewFileSet() + conf := Config{ + Packages: make(map[string]*Package), + Import: func(imports map[string]*Package, path string) (*Package, error) { + return imports[path], nil + }, + } + mustParse := func(src string) *ast.File { + f, err := parser.ParseFile(fset, "dummy.go", src, parser.ParseComments) + if err != nil { + t.Fatal(err) + } + return f + } + var info Info + makePkg := func(path string, files ...*ast.File) { + conf.Packages[path], _ = conf.Check(path, fset, files, &info) + } + + makePkg("lib", mustParse("package lib; var X int")) + // Each /*name=kind:line*/ comment makes the test look up the + // name at that point and checks that it resolves to a decl of + // the specified kind and line number. "undef" means undefined. + mainSrc := ` +package main +import "lib" +var Y = lib.X +func f() { + print(Y) /*Y=var:4*/ + z /*z=undef*/ := /*z=undef*/ 1 /*z=var:7*/ + print(z) + /*f=func:5*/ /*lib=pkgname:3*/ + type /*T=undef*/ T /*T=typename:10*/ *T +} +` + info.Uses = make(map[*ast.Ident]Object) + f := mustParse(mainSrc) + makePkg("main", f) + mainScope := conf.Packages["main"].Scope() + rx := regexp.MustCompile(`^/\*(\w*)=([\w:]*)\*/$`) + for _, group := range f.Comments { + for _, comment := range group.List { + // Parse the assertion in the comment. + m := rx.FindStringSubmatch(comment.Text) + if m == nil { + t.Errorf("%s: bad comment: %s", + fset.Position(comment.Pos()), comment.Text) + continue + } + name, want := m[1], m[2] + + // Look up the name in the innermost enclosing scope. + inner := mainScope.Innermost(comment.Pos()) + if inner == nil { + t.Errorf("%s: at %s: can't find innermost scope", + fset.Position(comment.Pos()), comment.Text) + continue + } + got := "undef" + if _, obj := inner.LookupParent(name, comment.Pos()); obj != nil { + kind := strings.ToLower(strings.TrimPrefix(reflect.TypeOf(obj).String(), "*types.")) + got = fmt.Sprintf("%s:%d", kind, fset.Position(obj.Pos()).Line) + } + if got != want { + t.Errorf("%s: at %s: %s resolved to %s, want %s", + fset.Position(comment.Pos()), comment.Text, name, got, want) + } + } + } + + // Check that for each referring identifier, + // a lookup of its name on the innermost + // enclosing scope returns the correct object. + + for id, wantObj := range info.Uses { + inner := mainScope.Innermost(id.Pos()) + if inner == nil { + t.Errorf("%s: can't find innermost scope enclosing %q", + fset.Position(id.Pos()), id.Name) + continue + } + + // Exclude selectors and qualified identifiers---lexical + // refs only. (Ideally, we'd see if the AST parent is a + // SelectorExpr, but that requires PathEnclosingInterval + // from golang.org/x/tools/go/ast/astutil.) + if id.Name == "X" { + continue + } + + _, gotObj := inner.LookupParent(id.Name, id.Pos()) + if gotObj != wantObj { + t.Errorf("%s: got %v, want %v", + fset.Position(id.Pos()), gotObj, wantObj) + continue + } + } +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/types/assignments.go b/Godeps/_workspace/src/golang.org/x/tools/go/types/assignments.go new file mode 100644 index 0000000000..93b842eaa0 --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/types/assignments.go @@ -0,0 +1,328 @@ +// Copyright 2013 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// This file implements initialization and assignment checks. + +package types + +import ( + "go/ast" + "go/token" +) + +// assignment reports whether x can be assigned to a variable of type T, +// if necessary by attempting to convert untyped values to the appropriate +// type. If x.mode == invalid upon return, then assignment has already +// issued an error message and the caller doesn't have to report another. +// Use T == nil to indicate assignment to an untyped blank identifier. +// +// TODO(gri) Should find a better way to handle in-band errors. +// +func (check *Checker) assignment(x *operand, T Type) bool { + switch x.mode { + case invalid: + return true // error reported before + case constant, variable, mapindex, value, commaok: + // ok + default: + unreachable() + } + + // x must be a single value + // (tuple types are never named - no need for underlying type) + if t, _ := x.typ.(*Tuple); t != nil { + assert(t.Len() > 1) + check.errorf(x.pos(), "%d-valued expression %s used as single value", t.Len(), x) + x.mode = invalid + return false + } + + if isUntyped(x.typ) { + target := T + // spec: "If an untyped constant is assigned to a variable of interface + // type or the blank identifier, the constant is first converted to type + // bool, rune, int, float64, complex128 or string respectively, depending + // on whether the value is a boolean, rune, integer, floating-point, complex, + // or string constant." + if T == nil || IsInterface(T) { + if T == nil && x.typ == Typ[UntypedNil] { + check.errorf(x.pos(), "use of untyped nil") + x.mode = invalid + return false + } + target = defaultType(x.typ) + } + check.convertUntyped(x, target) + if x.mode == invalid { + return false + } + } + + // spec: "If a left-hand side is the blank identifier, any typed or + // non-constant value except for the predeclared identifier nil may + // be assigned to it." + return T == nil || x.assignableTo(check.conf, T) +} + +func (check *Checker) initConst(lhs *Const, x *operand) { + if x.mode == invalid || x.typ == Typ[Invalid] || lhs.typ == Typ[Invalid] { + if lhs.typ == nil { + lhs.typ = Typ[Invalid] + } + return + } + + // rhs must be a constant + if x.mode != constant { + check.errorf(x.pos(), "%s is not constant", x) + if lhs.typ == nil { + lhs.typ = Typ[Invalid] + } + return + } + assert(isConstType(x.typ)) + + // If the lhs doesn't have a type yet, use the type of x. + if lhs.typ == nil { + lhs.typ = x.typ + } + + if !check.assignment(x, lhs.typ) { + if x.mode != invalid { + check.errorf(x.pos(), "cannot define constant %s (type %s) as %s", lhs.Name(), lhs.typ, x) + } + return + } + + lhs.val = x.val +} + +// If result is set, lhs is a function result parameter and x is a return result. +func (check *Checker) initVar(lhs *Var, x *operand, result bool) Type { + if x.mode == invalid || x.typ == Typ[Invalid] || lhs.typ == Typ[Invalid] { + if lhs.typ == nil { + lhs.typ = Typ[Invalid] + } + return nil + } + + // If the lhs doesn't have a type yet, use the type of x. + if lhs.typ == nil { + typ := x.typ + if isUntyped(typ) { + // convert untyped types to default types + if typ == Typ[UntypedNil] { + check.errorf(x.pos(), "use of untyped nil") + lhs.typ = Typ[Invalid] + return nil + } + typ = defaultType(typ) + } + lhs.typ = typ + } + + if !check.assignment(x, lhs.typ) { + if x.mode != invalid { + if result { + // don't refer to lhs.name because it may be an anonymous result parameter + check.errorf(x.pos(), "cannot return %s as value of type %s", x, lhs.typ) + } else { + check.errorf(x.pos(), "cannot initialize %s with %s", lhs, x) + } + } + return nil + } + + return x.typ +} + +func (check *Checker) assignVar(lhs ast.Expr, x *operand) Type { + if x.mode == invalid || x.typ == Typ[Invalid] { + return nil + } + + // Determine if the lhs is a (possibly parenthesized) identifier. + ident, _ := unparen(lhs).(*ast.Ident) + + // Don't evaluate lhs if it is the blank identifier. + if ident != nil && ident.Name == "_" { + check.recordDef(ident, nil) + if !check.assignment(x, nil) { + assert(x.mode == invalid) + x.typ = nil + } + return x.typ + } + + // If the lhs is an identifier denoting a variable v, this assignment + // is not a 'use' of v. Remember current value of v.used and restore + // after evaluating the lhs via check.expr. + var v *Var + var v_used bool + if ident != nil { + if _, obj := check.scope.LookupParent(ident.Name, token.NoPos); obj != nil { + v, _ = obj.(*Var) + if v != nil { + v_used = v.used + } + } + } + + var z operand + check.expr(&z, lhs) + if v != nil { + v.used = v_used // restore v.used + } + + if z.mode == invalid || z.typ == Typ[Invalid] { + return nil + } + + // spec: "Each left-hand side operand must be addressable, a map index + // expression, or the blank identifier. Operands may be parenthesized." + switch z.mode { + case invalid: + return nil + case variable, mapindex: + // ok + default: + check.errorf(z.pos(), "cannot assign to %s", &z) + return nil + } + + if !check.assignment(x, z.typ) { + if x.mode != invalid { + check.errorf(x.pos(), "cannot assign %s to %s", x, &z) + } + return nil + } + + return x.typ +} + +// If returnPos is valid, initVars is called to type-check the assignment of +// return expressions, and returnPos is the position of the return statement. +func (check *Checker) initVars(lhs []*Var, rhs []ast.Expr, returnPos token.Pos) { + l := len(lhs) + get, r, commaOk := unpack(func(x *operand, i int) { check.expr(x, rhs[i]) }, len(rhs), l == 2 && !returnPos.IsValid()) + if get == nil || l != r { + // invalidate lhs and use rhs + for _, obj := range lhs { + if obj.typ == nil { + obj.typ = Typ[Invalid] + } + } + if get == nil { + return // error reported by unpack + } + check.useGetter(get, r) + if returnPos.IsValid() { + check.errorf(returnPos, "wrong number of return values (want %d, got %d)", l, r) + return + } + check.errorf(rhs[0].Pos(), "assignment count mismatch (%d vs %d)", l, r) + return + } + + var x operand + if commaOk { + var a [2]Type + for i := range a { + get(&x, i) + a[i] = check.initVar(lhs[i], &x, returnPos.IsValid()) + } + check.recordCommaOkTypes(rhs[0], a) + return + } + + for i, lhs := range lhs { + get(&x, i) + check.initVar(lhs, &x, returnPos.IsValid()) + } +} + +func (check *Checker) assignVars(lhs, rhs []ast.Expr) { + l := len(lhs) + get, r, commaOk := unpack(func(x *operand, i int) { check.expr(x, rhs[i]) }, len(rhs), l == 2) + if get == nil { + return // error reported by unpack + } + if l != r { + check.useGetter(get, r) + check.errorf(rhs[0].Pos(), "assignment count mismatch (%d vs %d)", l, r) + return + } + + var x operand + if commaOk { + var a [2]Type + for i := range a { + get(&x, i) + a[i] = check.assignVar(lhs[i], &x) + } + check.recordCommaOkTypes(rhs[0], a) + return + } + + for i, lhs := range lhs { + get(&x, i) + check.assignVar(lhs, &x) + } +} + +func (check *Checker) shortVarDecl(pos token.Pos, lhs, rhs []ast.Expr) { + scope := check.scope + + // collect lhs variables + var newVars []*Var + var lhsVars = make([]*Var, len(lhs)) + for i, lhs := range lhs { + var obj *Var + if ident, _ := lhs.(*ast.Ident); ident != nil { + // Use the correct obj if the ident is redeclared. The + // variable's scope starts after the declaration; so we + // must use Scope.Lookup here and call Scope.Insert + // (via check.declare) later. + name := ident.Name + if alt := scope.Lookup(name); alt != nil { + // redeclared object must be a variable + if alt, _ := alt.(*Var); alt != nil { + obj = alt + } else { + check.errorf(lhs.Pos(), "cannot assign to %s", lhs) + } + check.recordUse(ident, alt) + } else { + // declare new variable, possibly a blank (_) variable + obj = NewVar(ident.Pos(), check.pkg, name, nil) + if name != "_" { + newVars = append(newVars, obj) + } + check.recordDef(ident, obj) + } + } else { + check.errorf(lhs.Pos(), "cannot declare %s", lhs) + } + if obj == nil { + obj = NewVar(lhs.Pos(), check.pkg, "_", nil) // dummy variable + } + lhsVars[i] = obj + } + + check.initVars(lhsVars, rhs, token.NoPos) + + // declare new variables + if len(newVars) > 0 { + // spec: "The scope of a constant or variable identifier declared inside + // a function begins at the end of the ConstSpec or VarSpec (ShortVarDecl + // for short variable declarations) and ends at the end of the innermost + // containing block." + scopePos := rhs[len(rhs)-1].End() + for _, obj := range newVars { + check.declare(scope, nil, obj, scopePos) // recordObject already called + } + } else { + check.softErrorf(pos, "no new variables on left side of :=") + } +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/types/builtins.go b/Godeps/_workspace/src/golang.org/x/tools/go/types/builtins.go new file mode 100644 index 0000000000..f45f930a42 --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/types/builtins.go @@ -0,0 +1,628 @@ +// Copyright 2012 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// This file implements typechecking of builtin function calls. + +package types + +import ( + "go/ast" + "go/token" + + "golang.org/x/tools/go/exact" +) + +// builtin type-checks a call to the built-in specified by id and +// returns true if the call is valid, with *x holding the result; +// but x.expr is not set. If the call is invalid, the result is +// false, and *x is undefined. +// +func (check *Checker) builtin(x *operand, call *ast.CallExpr, id builtinId) (_ bool) { + // append is the only built-in that permits the use of ... for the last argument + bin := predeclaredFuncs[id] + if call.Ellipsis.IsValid() && id != _Append { + check.invalidOp(call.Ellipsis, "invalid use of ... with built-in %s", bin.name) + check.use(call.Args...) + return + } + + // For len(x) and cap(x) we need to know if x contains any function calls or + // receive operations. Save/restore current setting and set hasCallOrRecv to + // false for the evaluation of x so that we can check it afterwards. + // Note: We must do this _before_ calling unpack because unpack evaluates the + // first argument before we even call arg(x, 0)! + if id == _Len || id == _Cap { + defer func(b bool) { + check.hasCallOrRecv = b + }(check.hasCallOrRecv) + check.hasCallOrRecv = false + } + + // determine actual arguments + var arg getter + nargs := len(call.Args) + switch id { + default: + // make argument getter + arg, nargs, _ = unpack(func(x *operand, i int) { check.expr(x, call.Args[i]) }, nargs, false) + if arg == nil { + return + } + // evaluate first argument, if present + if nargs > 0 { + arg(x, 0) + if x.mode == invalid { + return + } + } + case _Make, _New, _Offsetof, _Trace: + // arguments require special handling + } + + // check argument count + { + msg := "" + if nargs < bin.nargs { + msg = "not enough" + } else if !bin.variadic && nargs > bin.nargs { + msg = "too many" + } + if msg != "" { + check.invalidOp(call.Rparen, "%s arguments for %s (expected %d, found %d)", msg, call, bin.nargs, nargs) + return + } + } + + switch id { + case _Append: + // append(s S, x ...T) S, where T is the element type of S + // spec: "The variadic function append appends zero or more values x to s of type + // S, which must be a slice type, and returns the resulting slice, also of type S. + // The values x are passed to a parameter of type ...T where T is the element type + // of S and the respective parameter passing rules apply." + S := x.typ + var T Type + if s, _ := S.Underlying().(*Slice); s != nil { + T = s.elem + } else { + check.invalidArg(x.pos(), "%s is not a slice", x) + return + } + + // remember arguments that have been evaluated already + alist := []operand{*x} + + // spec: "As a special case, append also accepts a first argument assignable + // to type []byte with a second argument of string type followed by ... . + // This form appends the bytes of the string. + if nargs == 2 && call.Ellipsis.IsValid() && x.assignableTo(check.conf, NewSlice(universeByte)) { + arg(x, 1) + if x.mode == invalid { + return + } + if isString(x.typ) { + if check.Types != nil { + sig := makeSig(S, S, x.typ) + sig.variadic = true + check.recordBuiltinType(call.Fun, sig) + } + x.mode = value + x.typ = S + break + } + alist = append(alist, *x) + // fallthrough + } + + // check general case by creating custom signature + sig := makeSig(S, S, NewSlice(T)) // []T required for variadic signature + sig.variadic = true + check.arguments(x, call, sig, func(x *operand, i int) { + // only evaluate arguments that have not been evaluated before + if i < len(alist) { + *x = alist[i] + return + } + arg(x, i) + }, nargs) + // ok to continue even if check.arguments reported errors + + x.mode = value + x.typ = S + if check.Types != nil { + check.recordBuiltinType(call.Fun, sig) + } + + case _Cap, _Len: + // cap(x) + // len(x) + mode := invalid + var typ Type + var val exact.Value + switch typ = implicitArrayDeref(x.typ.Underlying()); t := typ.(type) { + case *Basic: + if isString(t) && id == _Len { + if x.mode == constant { + mode = constant + val = exact.MakeInt64(int64(len(exact.StringVal(x.val)))) + } else { + mode = value + } + } + + case *Array: + mode = value + // spec: "The expressions len(s) and cap(s) are constants + // if the type of s is an array or pointer to an array and + // the expression s does not contain channel receives or + // function calls; in this case s is not evaluated." + if !check.hasCallOrRecv { + mode = constant + val = exact.MakeInt64(t.len) + } + + case *Slice, *Chan: + mode = value + + case *Map: + if id == _Len { + mode = value + } + } + + if mode == invalid { + check.invalidArg(x.pos(), "%s for %s", x, bin.name) + return + } + + x.mode = mode + x.typ = Typ[Int] + x.val = val + if check.Types != nil && mode != constant { + check.recordBuiltinType(call.Fun, makeSig(x.typ, typ)) + } + + case _Close: + // close(c) + c, _ := x.typ.Underlying().(*Chan) + if c == nil { + check.invalidArg(x.pos(), "%s is not a channel", x) + return + } + if c.dir == RecvOnly { + check.invalidArg(x.pos(), "%s must not be a receive-only channel", x) + return + } + + x.mode = novalue + if check.Types != nil { + check.recordBuiltinType(call.Fun, makeSig(nil, c)) + } + + case _Complex: + // complex(x, y realT) complexT + if !check.complexArg(x) { + return + } + + var y operand + arg(&y, 1) + if y.mode == invalid { + return + } + if !check.complexArg(&y) { + return + } + + check.convertUntyped(x, y.typ) + if x.mode == invalid { + return + } + check.convertUntyped(&y, x.typ) + if y.mode == invalid { + return + } + + if !Identical(x.typ, y.typ) { + check.invalidArg(x.pos(), "mismatched types %s and %s", x.typ, y.typ) + return + } + + if x.mode == constant && y.mode == constant { + x.val = exact.BinaryOp(x.val, token.ADD, exact.MakeImag(y.val)) + } else { + x.mode = value + } + + realT := x.typ + complexT := Typ[Invalid] + switch realT.Underlying().(*Basic).kind { + case Float32: + complexT = Typ[Complex64] + case Float64: + complexT = Typ[Complex128] + case UntypedInt, UntypedRune, UntypedFloat: + if x.mode == constant { + realT = defaultType(realT).(*Basic) + complexT = Typ[UntypedComplex] + } else { + // untyped but not constant; probably because one + // operand is a non-constant shift of untyped lhs + realT = Typ[Float64] + complexT = Typ[Complex128] + } + default: + check.invalidArg(x.pos(), "float32 or float64 arguments expected") + return + } + + x.typ = complexT + if check.Types != nil && x.mode != constant { + check.recordBuiltinType(call.Fun, makeSig(complexT, realT, realT)) + } + + if x.mode != constant { + // The arguments have now their final types, which at run- + // time will be materialized. Update the expression trees. + // If the current types are untyped, the materialized type + // is the respective default type. + // (If the result is constant, the arguments are never + // materialized and there is nothing to do.) + check.updateExprType(x.expr, realT, true) + check.updateExprType(y.expr, realT, true) + } + + case _Copy: + // copy(x, y []T) int + var dst Type + if t, _ := x.typ.Underlying().(*Slice); t != nil { + dst = t.elem + } + + var y operand + arg(&y, 1) + if y.mode == invalid { + return + } + var src Type + switch t := y.typ.Underlying().(type) { + case *Basic: + if isString(y.typ) { + src = universeByte + } + case *Slice: + src = t.elem + } + + if dst == nil || src == nil { + check.invalidArg(x.pos(), "copy expects slice arguments; found %s and %s", x, &y) + return + } + + if !Identical(dst, src) { + check.invalidArg(x.pos(), "arguments to copy %s and %s have different element types %s and %s", x, &y, dst, src) + return + } + + if check.Types != nil { + check.recordBuiltinType(call.Fun, makeSig(Typ[Int], x.typ, y.typ)) + } + x.mode = value + x.typ = Typ[Int] + + case _Delete: + // delete(m, k) + m, _ := x.typ.Underlying().(*Map) + if m == nil { + check.invalidArg(x.pos(), "%s is not a map", x) + return + } + arg(x, 1) // k + if x.mode == invalid { + return + } + + if !x.assignableTo(check.conf, m.key) { + check.invalidArg(x.pos(), "%s is not assignable to %s", x, m.key) + return + } + + x.mode = novalue + if check.Types != nil { + check.recordBuiltinType(call.Fun, makeSig(nil, m, m.key)) + } + + case _Imag, _Real: + // imag(complexT) realT + // real(complexT) realT + if !isComplex(x.typ) { + check.invalidArg(x.pos(), "%s must be a complex number", x) + return + } + if x.mode == constant { + if id == _Real { + x.val = exact.Real(x.val) + } else { + x.val = exact.Imag(x.val) + } + } else { + x.mode = value + } + var k BasicKind + switch x.typ.Underlying().(*Basic).kind { + case Complex64: + k = Float32 + case Complex128: + k = Float64 + case UntypedComplex: + k = UntypedFloat + default: + unreachable() + } + + if check.Types != nil && x.mode != constant { + check.recordBuiltinType(call.Fun, makeSig(Typ[k], x.typ)) + } + x.typ = Typ[k] + + case _Make: + // make(T, n) + // make(T, n, m) + // (no argument evaluated yet) + arg0 := call.Args[0] + T := check.typ(arg0) + if T == Typ[Invalid] { + return + } + + var min int // minimum number of arguments + switch T.Underlying().(type) { + case *Slice: + min = 2 + case *Map, *Chan: + min = 1 + default: + check.invalidArg(arg0.Pos(), "cannot make %s; type must be slice, map, or channel", arg0) + return + } + if nargs < min || min+1 < nargs { + check.errorf(call.Pos(), "%s expects %d or %d arguments; found %d", call, min, min+1, nargs) + return + } + var sizes []int64 // constant integer arguments, if any + for _, arg := range call.Args[1:] { + if s, ok := check.index(arg, -1); ok && s >= 0 { + sizes = append(sizes, s) + } + } + if len(sizes) == 2 && sizes[0] > sizes[1] { + check.invalidArg(call.Args[1].Pos(), "length and capacity swapped") + // safe to continue + } + x.mode = value + x.typ = T + if check.Types != nil { + params := [...]Type{T, Typ[Int], Typ[Int]} + check.recordBuiltinType(call.Fun, makeSig(x.typ, params[:1+len(sizes)]...)) + } + + case _New: + // new(T) + // (no argument evaluated yet) + T := check.typ(call.Args[0]) + if T == Typ[Invalid] { + return + } + + x.mode = value + x.typ = &Pointer{base: T} + if check.Types != nil { + check.recordBuiltinType(call.Fun, makeSig(x.typ, T)) + } + + case _Panic: + // panic(x) + T := new(Interface) + if !check.assignment(x, T) { + assert(x.mode == invalid) + return + } + + x.mode = novalue + if check.Types != nil { + check.recordBuiltinType(call.Fun, makeSig(nil, T)) + } + + case _Print, _Println: + // print(x, y, ...) + // println(x, y, ...) + var params []Type + if nargs > 0 { + params = make([]Type, nargs) + for i := 0; i < nargs; i++ { + if i > 0 { + arg(x, i) // first argument already evaluated + } + if !check.assignment(x, nil) { + assert(x.mode == invalid) + return + } + params[i] = x.typ + } + } + + x.mode = novalue + if check.Types != nil { + check.recordBuiltinType(call.Fun, makeSig(nil, params...)) + } + + case _Recover: + // recover() interface{} + x.mode = value + x.typ = new(Interface) + if check.Types != nil { + check.recordBuiltinType(call.Fun, makeSig(x.typ)) + } + + case _Alignof: + // unsafe.Alignof(x T) uintptr + if !check.assignment(x, nil) { + assert(x.mode == invalid) + return + } + + x.mode = constant + x.val = exact.MakeInt64(check.conf.alignof(x.typ)) + x.typ = Typ[Uintptr] + // result is constant - no need to record signature + + case _Offsetof: + // unsafe.Offsetof(x T) uintptr, where x must be a selector + // (no argument evaluated yet) + arg0 := call.Args[0] + selx, _ := unparen(arg0).(*ast.SelectorExpr) + if selx == nil { + check.invalidArg(arg0.Pos(), "%s is not a selector expression", arg0) + check.use(arg0) + return + } + + check.expr(x, selx.X) + if x.mode == invalid { + return + } + + base := derefStructPtr(x.typ) + sel := selx.Sel.Name + obj, index, indirect := LookupFieldOrMethod(base, false, check.pkg, sel) + switch obj.(type) { + case nil: + check.invalidArg(x.pos(), "%s has no single field %s", base, sel) + return + case *Func: + // TODO(gri) Using derefStructPtr may result in methods being found + // that don't actually exist. An error either way, but the error + // message is confusing. See: http://play.golang.org/p/al75v23kUy , + // but go/types reports: "invalid argument: x.m is a method value". + check.invalidArg(arg0.Pos(), "%s is a method value", arg0) + return + } + if indirect { + check.invalidArg(x.pos(), "field %s is embedded via a pointer in %s", sel, base) + return + } + + // TODO(gri) Should we pass x.typ instead of base (and indirect report if derefStructPtr indirected)? + check.recordSelection(selx, FieldVal, base, obj, index, false) + + offs := check.conf.offsetof(base, index) + x.mode = constant + x.val = exact.MakeInt64(offs) + x.typ = Typ[Uintptr] + // result is constant - no need to record signature + + case _Sizeof: + // unsafe.Sizeof(x T) uintptr + if !check.assignment(x, nil) { + assert(x.mode == invalid) + return + } + + x.mode = constant + x.val = exact.MakeInt64(check.conf.sizeof(x.typ)) + x.typ = Typ[Uintptr] + // result is constant - no need to record signature + + case _Assert: + // assert(pred) causes a typechecker error if pred is false. + // The result of assert is the value of pred if there is no error. + // Note: assert is only available in self-test mode. + if x.mode != constant || !isBoolean(x.typ) { + check.invalidArg(x.pos(), "%s is not a boolean constant", x) + return + } + if x.val.Kind() != exact.Bool { + check.errorf(x.pos(), "internal error: value of %s should be a boolean constant", x) + return + } + if !exact.BoolVal(x.val) { + check.errorf(call.Pos(), "%s failed", call) + // compile-time assertion failure - safe to continue + } + // result is constant - no need to record signature + + case _Trace: + // trace(x, y, z, ...) dumps the positions, expressions, and + // values of its arguments. The result of trace is the value + // of the first argument. + // Note: trace is only available in self-test mode. + // (no argument evaluated yet) + if nargs == 0 { + check.dump("%s: trace() without arguments", call.Pos()) + x.mode = novalue + break + } + var t operand + x1 := x + for _, arg := range call.Args { + check.rawExpr(x1, arg, nil) // permit trace for types, e.g.: new(trace(T)) + check.dump("%s: %s", x1.pos(), x1) + x1 = &t // use incoming x only for first argument + } + // trace is only available in test mode - no need to record signature + + default: + unreachable() + } + + return true +} + +// makeSig makes a signature for the given argument and result types. +// Default types are used for untyped arguments, and res may be nil. +func makeSig(res Type, args ...Type) *Signature { + list := make([]*Var, len(args)) + for i, param := range args { + list[i] = NewVar(token.NoPos, nil, "", defaultType(param)) + } + params := NewTuple(list...) + var result *Tuple + if res != nil { + assert(!isUntyped(res)) + result = NewTuple(NewVar(token.NoPos, nil, "", res)) + } + return &Signature{params: params, results: result} +} + +// implicitArrayDeref returns A if typ is of the form *A and A is an array; +// otherwise it returns typ. +// +func implicitArrayDeref(typ Type) Type { + if p, ok := typ.(*Pointer); ok { + if a, ok := p.base.Underlying().(*Array); ok { + return a + } + } + return typ +} + +// unparen returns e with any enclosing parentheses stripped. +func unparen(e ast.Expr) ast.Expr { + for { + p, ok := e.(*ast.ParenExpr) + if !ok { + return e + } + e = p.X + } +} + +func (check *Checker) complexArg(x *operand) bool { + t, _ := x.typ.Underlying().(*Basic) + if t != nil && (t.info&IsFloat != 0 || t.kind == UntypedInt || t.kind == UntypedRune) { + return true + } + check.invalidArg(x.pos(), "%s must be a float32, float64, or an untyped non-complex numeric constant", x) + return false +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/types/builtins_test.go b/Godeps/_workspace/src/golang.org/x/tools/go/types/builtins_test.go new file mode 100644 index 0000000000..e7857994ac --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/types/builtins_test.go @@ -0,0 +1,204 @@ +// Copyright 2013 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package types_test + +import ( + "fmt" + "go/ast" + "go/parser" + "testing" + + _ "golang.org/x/tools/go/gcimporter" + . "golang.org/x/tools/go/types" +) + +var builtinCalls = []struct { + name, src, sig string +}{ + {"append", `var s []int; _ = append(s)`, `func([]int, ...int) []int`}, + {"append", `var s []int; _ = append(s, 0)`, `func([]int, ...int) []int`}, + {"append", `var s []int; _ = (append)(s, 0)`, `func([]int, ...int) []int`}, + {"append", `var s []byte; _ = ((append))(s, 0)`, `func([]byte, ...byte) []byte`}, + {"append", `var s []byte; _ = append(s, "foo"...)`, `func([]byte, string...) []byte`}, + {"append", `type T []byte; var s T; var str string; _ = append(s, str...)`, `func(p.T, string...) p.T`}, + {"append", `type T []byte; type U string; var s T; var str U; _ = append(s, str...)`, `func(p.T, p.U...) p.T`}, + + {"cap", `var s [10]int; _ = cap(s)`, `invalid type`}, // constant + {"cap", `var s [10]int; _ = cap(&s)`, `invalid type`}, // constant + {"cap", `var s []int64; _ = cap(s)`, `func([]int64) int`}, + {"cap", `var c chan<-bool; _ = cap(c)`, `func(chan<- bool) int`}, + + {"len", `_ = len("foo")`, `invalid type`}, // constant + {"len", `var s string; _ = len(s)`, `func(string) int`}, + {"len", `var s [10]int; _ = len(s)`, `invalid type`}, // constant + {"len", `var s [10]int; _ = len(&s)`, `invalid type`}, // constant + {"len", `var s []int64; _ = len(s)`, `func([]int64) int`}, + {"len", `var c chan<-bool; _ = len(c)`, `func(chan<- bool) int`}, + {"len", `var m map[string]float32; _ = len(m)`, `func(map[string]float32) int`}, + + {"close", `var c chan int; close(c)`, `func(chan int)`}, + {"close", `var c chan<- chan string; close(c)`, `func(chan<- chan string)`}, + + {"complex", `_ = complex(1, 0)`, `invalid type`}, // constant + {"complex", `var re float32; _ = complex(re, 1.0)`, `func(float32, float32) complex64`}, + {"complex", `var im float64; _ = complex(1, im)`, `func(float64, float64) complex128`}, + {"complex", `type F32 float32; var re, im F32; _ = complex(re, im)`, `func(p.F32, p.F32) complex64`}, + {"complex", `type F64 float64; var re, im F64; _ = complex(re, im)`, `func(p.F64, p.F64) complex128`}, + + {"copy", `var src, dst []byte; copy(dst, src)`, `func([]byte, []byte) int`}, + {"copy", `type T [][]int; var src, dst T; _ = copy(dst, src)`, `func(p.T, p.T) int`}, + {"copy", `var src string; var dst []byte; copy(dst, src)`, `func([]byte, string) int`}, + {"copy", `type T string; type U []byte; var src T; var dst U; copy(dst, src)`, `func(p.U, p.T) int`}, + {"copy", `var dst []byte; copy(dst, "hello")`, `func([]byte, string) int`}, + + {"delete", `var m map[string]bool; delete(m, "foo")`, `func(map[string]bool, string)`}, + {"delete", `type (K string; V int); var m map[K]V; delete(m, "foo")`, `func(map[p.K]p.V, p.K)`}, + + {"imag", `_ = imag(1i)`, `invalid type`}, // constant + {"imag", `var c complex64; _ = imag(c)`, `func(complex64) float32`}, + {"imag", `var c complex128; _ = imag(c)`, `func(complex128) float64`}, + {"imag", `type C64 complex64; var c C64; _ = imag(c)`, `func(p.C64) float32`}, + {"imag", `type C128 complex128; var c C128; _ = imag(c)`, `func(p.C128) float64`}, + + {"real", `_ = real(1i)`, `invalid type`}, // constant + {"real", `var c complex64; _ = real(c)`, `func(complex64) float32`}, + {"real", `var c complex128; _ = real(c)`, `func(complex128) float64`}, + {"real", `type C64 complex64; var c C64; _ = real(c)`, `func(p.C64) float32`}, + {"real", `type C128 complex128; var c C128; _ = real(c)`, `func(p.C128) float64`}, + + {"make", `_ = make([]int, 10)`, `func([]int, int) []int`}, + {"make", `type T []byte; _ = make(T, 10, 20)`, `func(p.T, int, int) p.T`}, + + {"new", `_ = new(int)`, `func(int) *int`}, + {"new", `type T struct{}; _ = new(T)`, `func(p.T) *p.T`}, + + {"panic", `panic(0)`, `func(interface{})`}, + {"panic", `panic("foo")`, `func(interface{})`}, + + {"print", `print()`, `func()`}, + {"print", `print(0)`, `func(int)`}, + {"print", `print(1, 2.0, "foo", true)`, `func(int, float64, string, bool)`}, + + {"println", `println()`, `func()`}, + {"println", `println(0)`, `func(int)`}, + {"println", `println(1, 2.0, "foo", true)`, `func(int, float64, string, bool)`}, + + {"recover", `recover()`, `func() interface{}`}, + {"recover", `_ = recover()`, `func() interface{}`}, + + {"Alignof", `_ = unsafe.Alignof(0)`, `invalid type`}, // constant + {"Alignof", `var x struct{}; _ = unsafe.Alignof(x)`, `invalid type`}, // constant + + {"Offsetof", `var x struct{f bool}; _ = unsafe.Offsetof(x.f)`, `invalid type`}, // constant + {"Offsetof", `var x struct{_ int; f bool}; _ = unsafe.Offsetof((&x).f)`, `invalid type`}, // constant + + {"Sizeof", `_ = unsafe.Sizeof(0)`, `invalid type`}, // constant + {"Sizeof", `var x struct{}; _ = unsafe.Sizeof(x)`, `invalid type`}, // constant + + {"assert", `assert(true)`, `invalid type`}, // constant + {"assert", `type B bool; const pred B = 1 < 2; assert(pred)`, `invalid type`}, // constant + + // no tests for trace since it produces output as a side-effect +} + +func TestBuiltinSignatures(t *testing.T) { + DefPredeclaredTestFuncs() + + seen := map[string]bool{"trace": true} // no test for trace built-in; add it manually + for _, call := range builtinCalls { + testBuiltinSignature(t, call.name, call.src, call.sig) + seen[call.name] = true + } + + // make sure we didn't miss one + for _, name := range Universe.Names() { + if _, ok := Universe.Lookup(name).(*Builtin); ok && !seen[name] { + t.Errorf("missing test for %s", name) + } + } + for _, name := range Unsafe.Scope().Names() { + if _, ok := Unsafe.Scope().Lookup(name).(*Builtin); ok && !seen[name] { + t.Errorf("missing test for unsafe.%s", name) + } + } +} + +func testBuiltinSignature(t *testing.T, name, src0, want string) { + src := fmt.Sprintf(`package p; import "unsafe"; type _ unsafe.Pointer /* use unsafe */; func _() { %s }`, src0) + f, err := parser.ParseFile(fset, "", src, 0) + if err != nil { + t.Errorf("%s: %s", src0, err) + return + } + + var conf Config + uses := make(map[*ast.Ident]Object) + types := make(map[ast.Expr]TypeAndValue) + _, err = conf.Check(f.Name.Name, fset, []*ast.File{f}, &Info{Uses: uses, Types: types}) + if err != nil { + t.Errorf("%s: %s", src0, err) + return + } + + // find called function + n := 0 + var fun ast.Expr + for x := range types { + if call, _ := x.(*ast.CallExpr); call != nil { + fun = call.Fun + n++ + } + } + if n != 1 { + t.Errorf("%s: got %d CallExprs; want 1", src0, n) + return + } + + // check recorded types for fun and descendents (may be parenthesized) + for { + // the recorded type for the built-in must match the wanted signature + typ := types[fun].Type + if typ == nil { + t.Errorf("%s: no type recorded for %s", src0, ExprString(fun)) + return + } + if got := typ.String(); got != want { + t.Errorf("%s: got type %s; want %s", src0, got, want) + return + } + + // called function must be a (possibly parenthesized, qualified) + // identifier denoting the expected built-in + switch p := fun.(type) { + case *ast.Ident: + obj := uses[p] + if obj == nil { + t.Errorf("%s: no object found for %s", src0, p) + return + } + bin, _ := obj.(*Builtin) + if bin == nil { + t.Errorf("%s: %s does not denote a built-in", src0, p) + return + } + if bin.Name() != name { + t.Errorf("%s: got built-in %s; want %s", src0, bin.Name(), name) + return + } + return // we're done + + case *ast.ParenExpr: + fun = p.X // unpack + + case *ast.SelectorExpr: + // built-in from package unsafe - ignore details + return // we're done + + default: + t.Errorf("%s: invalid function call", src0) + return + } + } +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/types/call.go b/Godeps/_workspace/src/golang.org/x/tools/go/types/call.go new file mode 100644 index 0000000000..1e94212398 --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/types/call.go @@ -0,0 +1,441 @@ +// Copyright 2013 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// This file implements typechecking of call and selector expressions. + +package types + +import ( + "go/ast" + "go/token" +) + +func (check *Checker) call(x *operand, e *ast.CallExpr) exprKind { + check.exprOrType(x, e.Fun) + + switch x.mode { + case invalid: + check.use(e.Args...) + x.mode = invalid + x.expr = e + return statement + + case typexpr: + // conversion + T := x.typ + x.mode = invalid + switch n := len(e.Args); n { + case 0: + check.errorf(e.Rparen, "missing argument in conversion to %s", T) + case 1: + check.expr(x, e.Args[0]) + if x.mode != invalid { + check.conversion(x, T) + } + default: + check.errorf(e.Args[n-1].Pos(), "too many arguments in conversion to %s", T) + } + x.expr = e + return conversion + + case builtin: + id := x.id + if !check.builtin(x, e, id) { + x.mode = invalid + } + x.expr = e + // a non-constant result implies a function call + if x.mode != invalid && x.mode != constant { + check.hasCallOrRecv = true + } + return predeclaredFuncs[id].kind + + default: + // function/method call + sig, _ := x.typ.Underlying().(*Signature) + if sig == nil { + check.invalidOp(x.pos(), "cannot call non-function %s", x) + x.mode = invalid + x.expr = e + return statement + } + + arg, n, _ := unpack(func(x *operand, i int) { check.expr(x, e.Args[i]) }, len(e.Args), false) + if arg == nil { + x.mode = invalid + x.expr = e + return statement + } + + check.arguments(x, e, sig, arg, n) + + // determine result + switch sig.results.Len() { + case 0: + x.mode = novalue + case 1: + x.mode = value + x.typ = sig.results.vars[0].typ // unpack tuple + default: + x.mode = value + x.typ = sig.results + } + x.expr = e + check.hasCallOrRecv = true + + return statement + } +} + +// use type-checks each argument. +// Useful to make sure expressions are evaluated +// (and variables are "used") in the presence of other errors. +func (check *Checker) use(arg ...ast.Expr) { + var x operand + for _, e := range arg { + check.rawExpr(&x, e, nil) + } +} + +// useGetter is like use, but takes a getter instead of a list of expressions. +// It should be called instead of use if a getter is present to avoid repeated +// evaluation of the first argument (since the getter was likely obtained via +// unpack, which may have evaluated the first argument already). +func (check *Checker) useGetter(get getter, n int) { + var x operand + for i := 0; i < n; i++ { + get(&x, i) + } +} + +// A getter sets x as the i'th operand, where 0 <= i < n and n is the total +// number of operands (context-specific, and maintained elsewhere). A getter +// type-checks the i'th operand; the details of the actual check are getter- +// specific. +type getter func(x *operand, i int) + +// unpack takes a getter get and a number of operands n. If n == 1, unpack +// calls the incoming getter for the first operand. If that operand is +// invalid, unpack returns (nil, 0, false). Otherwise, if that operand is a +// function call, or a comma-ok expression and allowCommaOk is set, the result +// is a new getter and operand count providing access to the function results, +// or comma-ok values, respectively. The third result value reports if it +// is indeed the comma-ok case. In all other cases, the incoming getter and +// operand count are returned unchanged, and the third result value is false. +// +// In other words, if there's exactly one operand that - after type-checking +// by calling get - stands for multiple operands, the resulting getter provides +// access to those operands instead. +// +// If the returned getter is called at most once for a given operand index i +// (including i == 0), that operand is guaranteed to cause only one call of +// the incoming getter with that i. +// +func unpack(get getter, n int, allowCommaOk bool) (getter, int, bool) { + if n == 1 { + // possibly result of an n-valued function call or comma,ok value + var x0 operand + get(&x0, 0) + if x0.mode == invalid { + return nil, 0, false + } + + if t, ok := x0.typ.(*Tuple); ok { + // result of an n-valued function call + return func(x *operand, i int) { + x.mode = value + x.expr = x0.expr + x.typ = t.At(i).typ + }, t.Len(), false + } + + if x0.mode == mapindex || x0.mode == commaok { + // comma-ok value + if allowCommaOk { + a := [2]Type{x0.typ, Typ[UntypedBool]} + return func(x *operand, i int) { + x.mode = value + x.expr = x0.expr + x.typ = a[i] + }, 2, true + } + x0.mode = value + } + + // single value + return func(x *operand, i int) { + if i != 0 { + unreachable() + } + *x = x0 + }, 1, false + } + + // zero or multiple values + return get, n, false +} + +// arguments checks argument passing for the call with the given signature. +// The arg function provides the operand for the i'th argument. +func (check *Checker) arguments(x *operand, call *ast.CallExpr, sig *Signature, arg getter, n int) { + if call.Ellipsis.IsValid() { + // last argument is of the form x... + if len(call.Args) == 1 && n > 1 { + // f()... is not permitted if f() is multi-valued + check.errorf(call.Ellipsis, "cannot use ... with %d-valued expression %s", n, call.Args[0]) + check.useGetter(arg, n) + return + } + if !sig.variadic { + check.errorf(call.Ellipsis, "cannot use ... in call to non-variadic %s", call.Fun) + check.useGetter(arg, n) + return + } + } + + // evaluate arguments + for i := 0; i < n; i++ { + arg(x, i) + if x.mode != invalid { + var ellipsis token.Pos + if i == n-1 && call.Ellipsis.IsValid() { + ellipsis = call.Ellipsis + } + check.argument(sig, i, x, ellipsis) + } + } + + // check argument count + if sig.variadic { + // a variadic function accepts an "empty" + // last argument: count one extra + n++ + } + if n < sig.params.Len() { + check.errorf(call.Rparen, "too few arguments in call to %s", call.Fun) + // ok to continue + } +} + +// argument checks passing of argument x to the i'th parameter of the given signature. +// If ellipsis is valid, the argument is followed by ... at that position in the call. +func (check *Checker) argument(sig *Signature, i int, x *operand, ellipsis token.Pos) { + n := sig.params.Len() + + // determine parameter type + var typ Type + switch { + case i < n: + typ = sig.params.vars[i].typ + case sig.variadic: + typ = sig.params.vars[n-1].typ + if debug { + if _, ok := typ.(*Slice); !ok { + check.dump("%s: expected unnamed slice type, got %s", sig.params.vars[n-1].Pos(), typ) + } + } + default: + check.errorf(x.pos(), "too many arguments") + return + } + + if ellipsis.IsValid() { + // argument is of the form x... + if i != n-1 { + check.errorf(ellipsis, "can only use ... with matching parameter") + return + } + switch t := x.typ.Underlying().(type) { + case *Slice: + // ok + case *Tuple: + check.errorf(ellipsis, "cannot use ... with %d-valued expression %s", t.Len(), x) + return + default: + check.errorf(x.pos(), "cannot use %s as parameter of type %s", x, typ) + return + } + } else if sig.variadic && i >= n-1 { + // use the variadic parameter slice's element type + typ = typ.(*Slice).elem + } + + if !check.assignment(x, typ) && x.mode != invalid { + check.errorf(x.pos(), "cannot pass argument %s to parameter of type %s", x, typ) + } +} + +func (check *Checker) selector(x *operand, e *ast.SelectorExpr) { + // these must be declared before the "goto Error" statements + var ( + obj Object + index []int + indirect bool + ) + + sel := e.Sel.Name + // If the identifier refers to a package, handle everything here + // so we don't need a "package" mode for operands: package names + // can only appear in qualified identifiers which are mapped to + // selector expressions. + if ident, ok := e.X.(*ast.Ident); ok { + _, obj := check.scope.LookupParent(ident.Name, check.pos) + if pkg, _ := obj.(*PkgName); pkg != nil { + assert(pkg.pkg == check.pkg) + check.recordUse(ident, pkg) + pkg.used = true + exp := pkg.imported.scope.Lookup(sel) + if exp == nil { + if !pkg.imported.fake { + check.errorf(e.Pos(), "%s not declared by package %s", sel, ident) + } + goto Error + } + if !exp.Exported() { + check.errorf(e.Pos(), "%s not exported by package %s", sel, ident) + // ok to continue + } + check.recordUse(e.Sel, exp) + // Simplified version of the code for *ast.Idents: + // - imported objects are always fully initialized + switch exp := exp.(type) { + case *Const: + assert(exp.Val() != nil) + x.mode = constant + x.typ = exp.typ + x.val = exp.val + case *TypeName: + x.mode = typexpr + x.typ = exp.typ + case *Var: + x.mode = variable + x.typ = exp.typ + case *Func: + x.mode = value + x.typ = exp.typ + case *Builtin: + x.mode = builtin + x.typ = exp.typ + x.id = exp.id + default: + unreachable() + } + x.expr = e + return + } + } + + check.exprOrType(x, e.X) + if x.mode == invalid { + goto Error + } + + obj, index, indirect = LookupFieldOrMethod(x.typ, x.mode == variable, check.pkg, sel) + if obj == nil { + switch { + case index != nil: + // TODO(gri) should provide actual type where the conflict happens + check.invalidOp(e.Pos(), "ambiguous selector %s", sel) + case indirect: + check.invalidOp(e.Pos(), "%s is not in method set of %s", sel, x.typ) + default: + check.invalidOp(e.Pos(), "%s has no field or method %s", x, sel) + } + goto Error + } + + if x.mode == typexpr { + // method expression + m, _ := obj.(*Func) + if m == nil { + check.invalidOp(e.Pos(), "%s has no method %s", x, sel) + goto Error + } + + check.recordSelection(e, MethodExpr, x.typ, m, index, indirect) + + // the receiver type becomes the type of the first function + // argument of the method expression's function type + var params []*Var + sig := m.typ.(*Signature) + if sig.params != nil { + params = sig.params.vars + } + x.mode = value + x.typ = &Signature{ + params: NewTuple(append([]*Var{NewVar(token.NoPos, check.pkg, "", x.typ)}, params...)...), + results: sig.results, + variadic: sig.variadic, + } + + check.addDeclDep(m) + + } else { + // regular selector + switch obj := obj.(type) { + case *Var: + check.recordSelection(e, FieldVal, x.typ, obj, index, indirect) + if x.mode == variable || indirect { + x.mode = variable + } else { + x.mode = value + } + x.typ = obj.typ + + case *Func: + // TODO(gri) If we needed to take into account the receiver's + // addressability, should we report the type &(x.typ) instead? + check.recordSelection(e, MethodVal, x.typ, obj, index, indirect) + + if debug { + // Verify that LookupFieldOrMethod and MethodSet.Lookup agree. + typ := x.typ + if x.mode == variable { + // If typ is not an (unnamed) pointer or an interface, + // use *typ instead, because the method set of *typ + // includes the methods of typ. + // Variables are addressable, so we can always take their + // address. + if _, ok := typ.(*Pointer); !ok && !IsInterface(typ) { + typ = &Pointer{base: typ} + } + } + // If we created a synthetic pointer type above, we will throw + // away the method set computed here after use. + // TODO(gri) Method set computation should probably always compute + // both, the value and the pointer receiver method set and represent + // them in a single structure. + // TODO(gri) Consider also using a method set cache for the lifetime + // of checker once we rely on MethodSet lookup instead of individual + // lookup. + mset := NewMethodSet(typ) + if m := mset.Lookup(check.pkg, sel); m == nil || m.obj != obj { + check.dump("%s: (%s).%v -> %s", e.Pos(), typ, obj.name, m) + check.dump("%s\n", mset) + panic("method sets and lookup don't agree") + } + } + + x.mode = value + + // remove receiver + sig := *obj.typ.(*Signature) + sig.recv = nil + x.typ = &sig + + check.addDeclDep(obj) + + default: + unreachable() + } + } + + // everything went well + x.expr = e + return + +Error: + x.mode = invalid + x.expr = e +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/types/check.go b/Godeps/_workspace/src/golang.org/x/tools/go/types/check.go new file mode 100644 index 0000000000..964d2bde03 --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/types/check.go @@ -0,0 +1,364 @@ +// Copyright 2011 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// This file implements the Check function, which drives type-checking. + +package types + +import ( + "go/ast" + "go/token" + + "golang.org/x/tools/go/exact" +) + +// debugging/development support +const ( + debug = false // leave on during development + trace = false // turn on for detailed type resolution traces +) + +// If Strict is set, the type-checker enforces additional +// rules not specified by the Go 1 spec, but which will +// catch guaranteed run-time errors if the respective +// code is executed. In other words, programs passing in +// Strict mode are Go 1 compliant, but not all Go 1 programs +// will pass in Strict mode. The additional rules are: +// +// - A type assertion x.(T) where T is an interface type +// is invalid if any (statically known) method that exists +// for both x and T have different signatures. +// +const strict = false + +// exprInfo stores information about an untyped expression. +type exprInfo struct { + isLhs bool // expression is lhs operand of a shift with delayed type-check + mode operandMode + typ *Basic + val exact.Value // constant value; or nil (if not a constant) +} + +// funcInfo stores the information required for type-checking a function. +type funcInfo struct { + name string // for debugging/tracing only + decl *declInfo // for cycle detection + sig *Signature + body *ast.BlockStmt +} + +// A context represents the context within which an object is type-checked. +type context struct { + decl *declInfo // package-level declaration whose init expression/function body is checked + scope *Scope // top-most scope for lookups + iota exact.Value // value of iota in a constant declaration; nil otherwise + sig *Signature // function signature if inside a function; nil otherwise + hasLabel bool // set if a function makes use of labels (only ~1% of functions); unused outside functions + hasCallOrRecv bool // set if an expression contains a function call or channel receive operation +} + +// A Checker maintains the state of the type checker. +// It must be created with NewChecker. +type Checker struct { + // package information + // (initialized by NewChecker, valid for the life-time of checker) + conf *Config + fset *token.FileSet + pkg *Package + *Info + objMap map[Object]*declInfo // maps package-level object to declaration info + + // information collected during type-checking of a set of package files + // (initialized by Files, valid only for the duration of check.Files; + // maps and lists are allocated on demand) + files []*ast.File // package files + unusedDotImports map[*Scope]map[*Package]token.Pos // positions of unused dot-imported packages for each file scope + + firstErr error // first error encountered + methods map[string][]*Func // maps type names to associated methods + untyped map[ast.Expr]exprInfo // map of expressions without final type + funcs []funcInfo // list of functions to type-check + delayed []func() // delayed checks requiring fully setup types + + // context within which the current object is type-checked + // (valid only for the duration of type-checking a specific object) + context + pos token.Pos // if valid, identifiers are looked up as if at position pos (used by Eval) + + // debugging + indent int // indentation for tracing +} + +// addUnusedImport adds the position of a dot-imported package +// pkg to the map of dot imports for the given file scope. +func (check *Checker) addUnusedDotImport(scope *Scope, pkg *Package, pos token.Pos) { + mm := check.unusedDotImports + if mm == nil { + mm = make(map[*Scope]map[*Package]token.Pos) + check.unusedDotImports = mm + } + m := mm[scope] + if m == nil { + m = make(map[*Package]token.Pos) + mm[scope] = m + } + m[pkg] = pos +} + +// addDeclDep adds the dependency edge (check.decl -> to) if check.decl exists +func (check *Checker) addDeclDep(to Object) { + from := check.decl + if from == nil { + return // not in a package-level init expression + } + if _, found := check.objMap[to]; !found { + return // to is not a package-level object + } + from.addDep(to) +} + +func (check *Checker) assocMethod(tname string, meth *Func) { + m := check.methods + if m == nil { + m = make(map[string][]*Func) + check.methods = m + } + m[tname] = append(m[tname], meth) +} + +func (check *Checker) rememberUntyped(e ast.Expr, lhs bool, mode operandMode, typ *Basic, val exact.Value) { + m := check.untyped + if m == nil { + m = make(map[ast.Expr]exprInfo) + check.untyped = m + } + m[e] = exprInfo{lhs, mode, typ, val} +} + +func (check *Checker) later(name string, decl *declInfo, sig *Signature, body *ast.BlockStmt) { + check.funcs = append(check.funcs, funcInfo{name, decl, sig, body}) +} + +func (check *Checker) delay(f func()) { + check.delayed = append(check.delayed, f) +} + +// NewChecker returns a new Checker instance for a given package. +// Package files may be added incrementally via checker.Files. +func NewChecker(conf *Config, fset *token.FileSet, pkg *Package, info *Info) *Checker { + // make sure we have a configuration + if conf == nil { + conf = new(Config) + } + + // make sure we have a package canonicalization map + if conf.Packages == nil { + conf.Packages = make(map[string]*Package) + } + + // make sure we have an info struct + if info == nil { + info = new(Info) + } + + return &Checker{ + conf: conf, + fset: fset, + pkg: pkg, + Info: info, + objMap: make(map[Object]*declInfo), + } +} + +// initFiles initializes the files-specific portion of checker. +// The provided files must all belong to the same package. +func (check *Checker) initFiles(files []*ast.File) { + // start with a clean slate (check.Files may be called multiple times) + check.files = nil + check.unusedDotImports = nil + + check.firstErr = nil + check.methods = nil + check.untyped = nil + check.funcs = nil + check.delayed = nil + + // determine package name and collect valid files + pkg := check.pkg + for _, file := range files { + switch name := file.Name.Name; pkg.name { + case "": + if name != "_" { + pkg.name = name + } else { + check.errorf(file.Name.Pos(), "invalid package name _") + } + fallthrough + + case name: + check.files = append(check.files, file) + + default: + check.errorf(file.Package, "package %s; expected %s", name, pkg.name) + // ignore this file + } + } +} + +// A bailout panic is used for early termination. +type bailout struct{} + +func (check *Checker) handleBailout(err *error) { + switch p := recover().(type) { + case nil, bailout: + // normal return or early exit + *err = check.firstErr + default: + // re-panic + panic(p) + } +} + +// Files checks the provided files as part of the checker's package. +func (check *Checker) Files(files []*ast.File) (err error) { + defer check.handleBailout(&err) + + check.initFiles(files) + + check.collectObjects() + + check.packageObjects(check.resolveOrder()) + + check.functionBodies() + + check.initOrder() + + if !check.conf.DisableUnusedImportCheck { + check.unusedImports() + } + + // perform delayed checks + for _, f := range check.delayed { + f() + } + + check.recordUntyped() + + check.pkg.complete = true + return +} + +func (check *Checker) recordUntyped() { + if !debug && check.Types == nil { + return // nothing to do + } + + for x, info := range check.untyped { + if debug && isTyped(info.typ) { + check.dump("%s: %s (type %s) is typed", x.Pos(), x, info.typ) + unreachable() + } + check.recordTypeAndValue(x, info.mode, info.typ, info.val) + } +} + +func (check *Checker) recordTypeAndValue(x ast.Expr, mode operandMode, typ Type, val exact.Value) { + assert(x != nil) + assert(typ != nil) + if mode == invalid { + return // omit + } + assert(typ != nil) + if mode == constant { + assert(val != nil) + assert(typ == Typ[Invalid] || isConstType(typ)) + } + if m := check.Types; m != nil { + m[x] = TypeAndValue{mode, typ, val} + } +} + +func (check *Checker) recordBuiltinType(f ast.Expr, sig *Signature) { + // f must be a (possibly parenthesized) identifier denoting a built-in + // (built-ins in package unsafe always produce a constant result and + // we don't record their signatures, so we don't see qualified idents + // here): record the signature for f and possible children. + for { + check.recordTypeAndValue(f, builtin, sig, nil) + switch p := f.(type) { + case *ast.Ident: + return // we're done + case *ast.ParenExpr: + f = p.X + default: + unreachable() + } + } +} + +func (check *Checker) recordCommaOkTypes(x ast.Expr, a [2]Type) { + assert(x != nil) + if a[0] == nil || a[1] == nil { + return + } + assert(isTyped(a[0]) && isTyped(a[1]) && isBoolean(a[1])) + if m := check.Types; m != nil { + for { + tv := m[x] + assert(tv.Type != nil) // should have been recorded already + pos := x.Pos() + tv.Type = NewTuple( + NewVar(pos, check.pkg, "", a[0]), + NewVar(pos, check.pkg, "", a[1]), + ) + m[x] = tv + // if x is a parenthesized expression (p.X), update p.X + p, _ := x.(*ast.ParenExpr) + if p == nil { + break + } + x = p.X + } + } +} + +func (check *Checker) recordDef(id *ast.Ident, obj Object) { + assert(id != nil) + if m := check.Defs; m != nil { + m[id] = obj + } +} + +func (check *Checker) recordUse(id *ast.Ident, obj Object) { + assert(id != nil) + assert(obj != nil) + if m := check.Uses; m != nil { + m[id] = obj + } +} + +func (check *Checker) recordImplicit(node ast.Node, obj Object) { + assert(node != nil) + assert(obj != nil) + if m := check.Implicits; m != nil { + m[node] = obj + } +} + +func (check *Checker) recordSelection(x *ast.SelectorExpr, kind SelectionKind, recv Type, obj Object, index []int, indirect bool) { + assert(obj != nil && (recv == nil || len(index) > 0)) + check.recordUse(x.Sel, obj) + // TODO(gri) Should we also call recordTypeAndValue? + if m := check.Selections; m != nil { + m[x] = &Selection{kind, recv, obj, index, indirect} + } +} + +func (check *Checker) recordScope(node ast.Node, scope *Scope) { + assert(node != nil) + assert(scope != nil) + if m := check.Scopes; m != nil { + m[node] = scope + } +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/types/check_test.go b/Godeps/_workspace/src/golang.org/x/tools/go/types/check_test.go new file mode 100644 index 0000000000..b6caccb34a --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/types/check_test.go @@ -0,0 +1,296 @@ +// Copyright 2011 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// This file implements a typechecker test harness. The packages specified +// in tests are typechecked. Error messages reported by the typechecker are +// compared against the error messages expected in the test files. +// +// Expected errors are indicated in the test files by putting a comment +// of the form /* ERROR "rx" */ immediately following an offending token. +// The harness will verify that an error matching the regular expression +// rx is reported at that source position. Consecutive comments may be +// used to indicate multiple errors for the same token position. +// +// For instance, the following test file indicates that a "not declared" +// error should be reported for the undeclared variable x: +// +// package p +// func f() { +// _ = x /* ERROR "not declared" */ + 1 +// } + +// TODO(gri) Also collect strict mode errors of the form /* STRICT ... */ +// and test against strict mode. + +package types_test + +import ( + "flag" + "go/ast" + "go/parser" + "go/scanner" + "go/token" + "io/ioutil" + "regexp" + "strings" + "testing" + + _ "golang.org/x/tools/go/gcimporter" + . "golang.org/x/tools/go/types" +) + +var ( + listErrors = flag.Bool("list", false, "list errors") + testFiles = flag.String("files", "", "space-separated list of test files") +) + +// The test filenames do not end in .go so that they are invisible +// to gofmt since they contain comments that must not change their +// positions relative to surrounding tokens. + +// Each tests entry is list of files belonging to the same package. +var tests = [][]string{ + {"testdata/errors.src"}, + {"testdata/importdecl0a.src", "testdata/importdecl0b.src"}, + {"testdata/importdecl1a.src", "testdata/importdecl1b.src"}, + {"testdata/cycles.src"}, + {"testdata/cycles1.src"}, + {"testdata/cycles2.src"}, + {"testdata/cycles3.src"}, + {"testdata/cycles4.src"}, + {"testdata/init0.src"}, + {"testdata/init1.src"}, + {"testdata/init2.src"}, + {"testdata/decls0.src"}, + {"testdata/decls1.src"}, + {"testdata/decls2a.src", "testdata/decls2b.src"}, + {"testdata/decls3.src"}, + {"testdata/const0.src"}, + {"testdata/const1.src"}, + {"testdata/constdecl.src"}, + {"testdata/vardecl.src"}, + {"testdata/expr0.src"}, + {"testdata/expr1.src"}, + {"testdata/expr2.src"}, + {"testdata/expr3.src"}, + {"testdata/methodsets.src"}, + {"testdata/shifts.src"}, + {"testdata/builtins.src"}, + {"testdata/conversions.src"}, + {"testdata/stmt0.src"}, + {"testdata/stmt1.src"}, + {"testdata/gotos.src"}, + {"testdata/labels.src"}, + {"testdata/issues.src"}, + {"testdata/blank.src"}, +} + +var fset = token.NewFileSet() + +// Positioned errors are of the form filename:line:column: message . +var posMsgRx = regexp.MustCompile(`^(.*:[0-9]+:[0-9]+): *(.*)`) + +// splitError splits an error's error message into a position string +// and the actual error message. If there's no position information, +// pos is the empty string, and msg is the entire error message. +// +func splitError(err error) (pos, msg string) { + msg = err.Error() + if m := posMsgRx.FindStringSubmatch(msg); len(m) == 3 { + pos = m[1] + msg = m[2] + } + return +} + +func parseFiles(t *testing.T, filenames []string) ([]*ast.File, []error) { + var files []*ast.File + var errlist []error + for _, filename := range filenames { + file, err := parser.ParseFile(fset, filename, nil, parser.AllErrors) + if file == nil { + t.Fatalf("%s: %s", filename, err) + } + files = append(files, file) + if err != nil { + if list, _ := err.(scanner.ErrorList); len(list) > 0 { + for _, err := range list { + errlist = append(errlist, err) + } + } else { + errlist = append(errlist, err) + } + } + } + return files, errlist +} + +// ERROR comments must start with text `ERROR "rx"` or `ERROR rx` where +// rx is a regular expression that matches the expected error message. +// Space around "rx" or rx is ignored. Use the form `ERROR HERE "rx"` +// for error messages that are located immediately after rather than +// at a token's position. +// +var errRx = regexp.MustCompile(`^ *ERROR *(HERE)? *"?([^"]*)"?`) + +// errMap collects the regular expressions of ERROR comments found +// in files and returns them as a map of error positions to error messages. +// +func errMap(t *testing.T, testname string, files []*ast.File) map[string][]string { + // map of position strings to lists of error message patterns + errmap := make(map[string][]string) + + for _, file := range files { + filename := fset.Position(file.Package).Filename + src, err := ioutil.ReadFile(filename) + if err != nil { + t.Fatalf("%s: could not read %s", testname, filename) + } + + var s scanner.Scanner + s.Init(fset.AddFile(filename, -1, len(src)), src, nil, scanner.ScanComments) + var prev token.Pos // position of last non-comment, non-semicolon token + var here token.Pos // position immediately after the token at position prev + + scanFile: + for { + pos, tok, lit := s.Scan() + switch tok { + case token.EOF: + break scanFile + case token.COMMENT: + if lit[1] == '*' { + lit = lit[:len(lit)-2] // strip trailing */ + } + if s := errRx.FindStringSubmatch(lit[2:]); len(s) == 3 { + pos := prev + if s[1] == "HERE" { + pos = here + } + p := fset.Position(pos).String() + errmap[p] = append(errmap[p], strings.TrimSpace(s[2])) + } + case token.SEMICOLON: + // ignore automatically inserted semicolon + if lit == "\n" { + continue scanFile + } + fallthrough + default: + prev = pos + var l int // token length + if tok.IsLiteral() { + l = len(lit) + } else { + l = len(tok.String()) + } + here = prev + token.Pos(l) + } + } + } + + return errmap +} + +func eliminate(t *testing.T, errmap map[string][]string, errlist []error) { + for _, err := range errlist { + pos, gotMsg := splitError(err) + list := errmap[pos] + index := -1 // list index of matching message, if any + // we expect one of the messages in list to match the error at pos + for i, wantRx := range list { + rx, err := regexp.Compile(wantRx) + if err != nil { + t.Errorf("%s: %v", pos, err) + continue + } + if rx.MatchString(gotMsg) { + index = i + break + } + } + if index >= 0 { + // eliminate from list + if n := len(list) - 1; n > 0 { + // not the last entry - swap in last element and shorten list by 1 + list[index] = list[n] + errmap[pos] = list[:n] + } else { + // last entry - remove list from map + delete(errmap, pos) + } + } else { + t.Errorf("%s: no error expected: %q", pos, gotMsg) + } + } +} + +func checkFiles(t *testing.T, testfiles []string) { + // parse files and collect parser errors + files, errlist := parseFiles(t, testfiles) + + pkgName := "" + if len(files) > 0 { + pkgName = files[0].Name.Name + } + + if *listErrors && len(errlist) > 0 { + t.Errorf("--- %s:", pkgName) + for _, err := range errlist { + t.Error(err) + } + } + + // typecheck and collect typechecker errors + var conf Config + conf.Error = func(err error) { + if *listErrors { + t.Error(err) + return + } + // Ignore secondary error messages starting with "\t"; + // they are clarifying messages for a primary error. + if !strings.Contains(err.Error(), ": \t") { + errlist = append(errlist, err) + } + } + conf.Check(pkgName, fset, files, nil) + + if *listErrors { + return + } + + // match and eliminate errors; + // we are expecting the following errors + errmap := errMap(t, pkgName, files) + eliminate(t, errmap, errlist) + + // there should be no expected errors left + if len(errmap) > 0 { + t.Errorf("--- %s: %d source positions with expected (but not reported) errors:", pkgName, len(errmap)) + for pos, list := range errmap { + for _, rx := range list { + t.Errorf("%s: %q", pos, rx) + } + } + } +} + +func TestCheck(t *testing.T) { + skipSpecialPlatforms(t) + + // Declare builtins for testing. + DefPredeclaredTestFuncs() + + // If explicit test files are specified, only check those. + if files := *testFiles; files != "" { + checkFiles(t, strings.Split(files, " ")) + return + } + + // Otherwise, run all the tests. + for _, files := range tests { + checkFiles(t, files) + } +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/types/conversions.go b/Godeps/_workspace/src/golang.org/x/tools/go/types/conversions.go new file mode 100644 index 0000000000..6e279ca3ee --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/types/conversions.go @@ -0,0 +1,146 @@ +// Copyright 2012 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// This file implements typechecking of conversions. + +package types + +import "golang.org/x/tools/go/exact" + +// Conversion type-checks the conversion T(x). +// The result is in x. +func (check *Checker) conversion(x *operand, T Type) { + constArg := x.mode == constant + + var ok bool + switch { + case constArg && isConstType(T): + // constant conversion + switch t := T.Underlying().(*Basic); { + case representableConst(x.val, check.conf, t.kind, &x.val): + ok = true + case isInteger(x.typ) && isString(t): + codepoint := int64(-1) + if i, ok := exact.Int64Val(x.val); ok { + codepoint = i + } + // If codepoint < 0 the absolute value is too large (or unknown) for + // conversion. This is the same as converting any other out-of-range + // value - let string(codepoint) do the work. + x.val = exact.MakeString(string(codepoint)) + ok = true + } + case x.convertibleTo(check.conf, T): + // non-constant conversion + x.mode = value + ok = true + } + + if !ok { + check.errorf(x.pos(), "cannot convert %s to %s", x, T) + x.mode = invalid + return + } + + // The conversion argument types are final. For untyped values the + // conversion provides the type, per the spec: "A constant may be + // given a type explicitly by a constant declaration or conversion,...". + final := x.typ + if isUntyped(x.typ) { + final = T + // - For conversions to interfaces, use the argument's default type. + // - For conversions of untyped constants to non-constant types, also + // use the default type (e.g., []byte("foo") should report string + // not []byte as type for the constant "foo"). + // - Keep untyped nil for untyped nil arguments. + if IsInterface(T) || constArg && !isConstType(T) { + final = defaultType(x.typ) + } + check.updateExprType(x.expr, final, true) + } + + x.typ = T +} + +func (x *operand) convertibleTo(conf *Config, T Type) bool { + // "x is assignable to T" + if x.assignableTo(conf, T) { + return true + } + + // "x's type and T have identical underlying types" + V := x.typ + Vu := V.Underlying() + Tu := T.Underlying() + if Identical(Vu, Tu) { + return true + } + + // "x's type and T are unnamed pointer types and their pointer base types have identical underlying types" + if V, ok := V.(*Pointer); ok { + if T, ok := T.(*Pointer); ok { + if Identical(V.base.Underlying(), T.base.Underlying()) { + return true + } + } + } + + // "x's type and T are both integer or floating point types" + if (isInteger(V) || isFloat(V)) && (isInteger(T) || isFloat(T)) { + return true + } + + // "x's type and T are both complex types" + if isComplex(V) && isComplex(T) { + return true + } + + // "x is an integer or a slice of bytes or runes and T is a string type" + if (isInteger(V) || isBytesOrRunes(Vu)) && isString(T) { + return true + } + + // "x is a string and T is a slice of bytes or runes" + if isString(V) && isBytesOrRunes(Tu) { + return true + } + + // package unsafe: + // "any pointer or value of underlying type uintptr can be converted into a unsafe.Pointer" + if (isPointer(Vu) || isUintptr(Vu)) && isUnsafePointer(T) { + return true + } + // "and vice versa" + if isUnsafePointer(V) && (isPointer(Tu) || isUintptr(Tu)) { + return true + } + + return false +} + +func isUintptr(typ Type) bool { + t, ok := typ.Underlying().(*Basic) + return ok && t.kind == Uintptr +} + +func isUnsafePointer(typ Type) bool { + // TODO(gri): Is this (typ.Underlying() instead of just typ) correct? + // The spec does not say so, but gc claims it is. See also + // issue 6326. + t, ok := typ.Underlying().(*Basic) + return ok && t.kind == UnsafePointer +} + +func isPointer(typ Type) bool { + _, ok := typ.Underlying().(*Pointer) + return ok +} + +func isBytesOrRunes(typ Type) bool { + if s, ok := typ.(*Slice); ok { + t, ok := s.elem.Underlying().(*Basic) + return ok && (t.kind == Byte || t.kind == Rune) + } + return false +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/types/decl.go b/Godeps/_workspace/src/golang.org/x/tools/go/types/decl.go new file mode 100644 index 0000000000..9eba85c1c3 --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/types/decl.go @@ -0,0 +1,431 @@ +// Copyright 2014 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package types + +import ( + "go/ast" + "go/token" + + "golang.org/x/tools/go/exact" +) + +func (check *Checker) reportAltDecl(obj Object) { + if pos := obj.Pos(); pos.IsValid() { + // We use "other" rather than "previous" here because + // the first declaration seen may not be textually + // earlier in the source. + check.errorf(pos, "\tother declaration of %s", obj.Name()) // secondary error, \t indented + } +} + +func (check *Checker) declare(scope *Scope, id *ast.Ident, obj Object, pos token.Pos) { + // spec: "The blank identifier, represented by the underscore + // character _, may be used in a declaration like any other + // identifier but the declaration does not introduce a new + // binding." + if obj.Name() != "_" { + if alt := scope.Insert(obj); alt != nil { + check.errorf(obj.Pos(), "%s redeclared in this block", obj.Name()) + check.reportAltDecl(alt) + return + } + obj.setScopePos(pos) + } + if id != nil { + check.recordDef(id, obj) + } +} + +// objDecl type-checks the declaration of obj in its respective (file) context. +// See check.typ for the details on def and path. +func (check *Checker) objDecl(obj Object, def *Named, path []*TypeName) { + if obj.Type() != nil { + return // already checked - nothing to do + } + + if trace { + check.trace(obj.Pos(), "-- declaring %s", obj.Name()) + check.indent++ + defer func() { + check.indent-- + check.trace(obj.Pos(), "=> %s", obj) + }() + } + + d := check.objMap[obj] + if d == nil { + check.dump("%s: %s should have been declared", obj.Pos(), obj.Name()) + unreachable() + } + + // save/restore current context and setup object context + defer func(ctxt context) { + check.context = ctxt + }(check.context) + check.context = context{ + scope: d.file, + } + + // Const and var declarations must not have initialization + // cycles. We track them by remembering the current declaration + // in check.decl. Initialization expressions depending on other + // consts, vars, or functions, add dependencies to the current + // check.decl. + switch obj := obj.(type) { + case *Const: + check.decl = d // new package-level const decl + check.constDecl(obj, d.typ, d.init) + case *Var: + check.decl = d // new package-level var decl + check.varDecl(obj, d.lhs, d.typ, d.init) + case *TypeName: + // invalid recursive types are detected via path + check.typeDecl(obj, d.typ, def, path) + case *Func: + // functions may be recursive - no need to track dependencies + check.funcDecl(obj, d) + default: + unreachable() + } +} + +func (check *Checker) constDecl(obj *Const, typ, init ast.Expr) { + assert(obj.typ == nil) + + if obj.visited { + obj.typ = Typ[Invalid] + return + } + obj.visited = true + + // use the correct value of iota + assert(check.iota == nil) + check.iota = obj.val + defer func() { check.iota = nil }() + + // provide valid constant value under all circumstances + obj.val = exact.MakeUnknown() + + // determine type, if any + if typ != nil { + t := check.typ(typ) + if !isConstType(t) { + check.errorf(typ.Pos(), "invalid constant type %s", t) + obj.typ = Typ[Invalid] + return + } + obj.typ = t + } + + // check initialization + var x operand + if init != nil { + check.expr(&x, init) + } + check.initConst(obj, &x) +} + +func (check *Checker) varDecl(obj *Var, lhs []*Var, typ, init ast.Expr) { + assert(obj.typ == nil) + + if obj.visited { + obj.typ = Typ[Invalid] + return + } + obj.visited = true + + // var declarations cannot use iota + assert(check.iota == nil) + + // determine type, if any + if typ != nil { + obj.typ = check.typ(typ) + } + + // check initialization + if init == nil { + if typ == nil { + // error reported before by arityMatch + obj.typ = Typ[Invalid] + } + return + } + + if lhs == nil || len(lhs) == 1 { + assert(lhs == nil || lhs[0] == obj) + var x operand + check.expr(&x, init) + check.initVar(obj, &x, false) + return + } + + if debug { + // obj must be one of lhs + found := false + for _, lhs := range lhs { + if obj == lhs { + found = true + break + } + } + if !found { + panic("inconsistent lhs") + } + } + check.initVars(lhs, []ast.Expr{init}, token.NoPos) +} + +// underlying returns the underlying type of typ; possibly by following +// forward chains of named types. Such chains only exist while named types +// are incomplete. +func underlying(typ Type) Type { + for { + n, _ := typ.(*Named) + if n == nil { + break + } + typ = n.underlying + } + return typ +} + +func (n *Named) setUnderlying(typ Type) { + if n != nil { + n.underlying = typ + } +} + +func (check *Checker) typeDecl(obj *TypeName, typ ast.Expr, def *Named, path []*TypeName) { + assert(obj.typ == nil) + + // type declarations cannot use iota + assert(check.iota == nil) + + named := &Named{obj: obj} + def.setUnderlying(named) + obj.typ = named // make sure recursive type declarations terminate + + // determine underlying type of named + check.typExpr(typ, named, append(path, obj)) + + // The underlying type of named may be itself a named type that is + // incomplete: + // + // type ( + // A B + // B *C + // C A + // ) + // + // The type of C is the (named) type of A which is incomplete, + // and which has as its underlying type the named type B. + // Determine the (final, unnamed) underlying type by resolving + // any forward chain (they always end in an unnamed type). + named.underlying = underlying(named.underlying) + + // check and add associated methods + // TODO(gri) It's easy to create pathological cases where the + // current approach is incorrect: In general we need to know + // and add all methods _before_ type-checking the type. + // See http://play.golang.org/p/WMpE0q2wK8 + check.addMethodDecls(obj) +} + +func (check *Checker) addMethodDecls(obj *TypeName) { + // get associated methods + methods := check.methods[obj.name] + if len(methods) == 0 { + return // no methods + } + delete(check.methods, obj.name) + + // use an objset to check for name conflicts + var mset objset + + // spec: "If the base type is a struct type, the non-blank method + // and field names must be distinct." + base := obj.typ.(*Named) + if t, _ := base.underlying.(*Struct); t != nil { + for _, fld := range t.fields { + if fld.name != "_" { + assert(mset.insert(fld) == nil) + } + } + } + + // Checker.Files may be called multiple times; additional package files + // may add methods to already type-checked types. Add pre-existing methods + // so that we can detect redeclarations. + for _, m := range base.methods { + assert(m.name != "_") + assert(mset.insert(m) == nil) + } + + // type-check methods + for _, m := range methods { + // spec: "For a base type, the non-blank names of methods bound + // to it must be unique." + if m.name != "_" { + if alt := mset.insert(m); alt != nil { + switch alt.(type) { + case *Var: + check.errorf(m.pos, "field and method with the same name %s", m.name) + case *Func: + check.errorf(m.pos, "method %s already declared for %s", m.name, base) + default: + unreachable() + } + check.reportAltDecl(alt) + continue + } + } + check.objDecl(m, nil, nil) + // methods with blank _ names cannot be found - don't keep them + if m.name != "_" { + base.methods = append(base.methods, m) + } + } +} + +func (check *Checker) funcDecl(obj *Func, decl *declInfo) { + assert(obj.typ == nil) + + // func declarations cannot use iota + assert(check.iota == nil) + + sig := new(Signature) + obj.typ = sig // guard against cycles + fdecl := decl.fdecl + check.funcType(sig, fdecl.Recv, fdecl.Type) + if sig.recv == nil && obj.name == "init" && (sig.params.Len() > 0 || sig.results.Len() > 0) { + check.errorf(fdecl.Pos(), "func init must have no arguments and no return values") + // ok to continue + } + + // function body must be type-checked after global declarations + // (functions implemented elsewhere have no body) + if !check.conf.IgnoreFuncBodies && fdecl.Body != nil { + check.later(obj.name, decl, sig, fdecl.Body) + } +} + +func (check *Checker) declStmt(decl ast.Decl) { + pkg := check.pkg + + switch d := decl.(type) { + case *ast.BadDecl: + // ignore + + case *ast.GenDecl: + var last *ast.ValueSpec // last ValueSpec with type or init exprs seen + for iota, spec := range d.Specs { + switch s := spec.(type) { + case *ast.ValueSpec: + switch d.Tok { + case token.CONST: + // determine which init exprs to use + switch { + case s.Type != nil || len(s.Values) > 0: + last = s + case last == nil: + last = new(ast.ValueSpec) // make sure last exists + } + + // declare all constants + lhs := make([]*Const, len(s.Names)) + for i, name := range s.Names { + obj := NewConst(name.Pos(), pkg, name.Name, nil, exact.MakeInt64(int64(iota))) + lhs[i] = obj + + var init ast.Expr + if i < len(last.Values) { + init = last.Values[i] + } + + check.constDecl(obj, last.Type, init) + } + + check.arityMatch(s, last) + + // spec: "The scope of a constant or variable identifier declared + // inside a function begins at the end of the ConstSpec or VarSpec + // (ShortVarDecl for short variable declarations) and ends at the + // end of the innermost containing block." + scopePos := s.End() + for i, name := range s.Names { + check.declare(check.scope, name, lhs[i], scopePos) + } + + case token.VAR: + lhs0 := make([]*Var, len(s.Names)) + for i, name := range s.Names { + lhs0[i] = NewVar(name.Pos(), pkg, name.Name, nil) + } + + // initialize all variables + for i, obj := range lhs0 { + var lhs []*Var + var init ast.Expr + switch len(s.Values) { + case len(s.Names): + // lhs and rhs match + init = s.Values[i] + case 1: + // rhs is expected to be a multi-valued expression + lhs = lhs0 + init = s.Values[0] + default: + if i < len(s.Values) { + init = s.Values[i] + } + } + check.varDecl(obj, lhs, s.Type, init) + if len(s.Values) == 1 { + // If we have a single lhs variable we are done either way. + // If we have a single rhs expression, it must be a multi- + // valued expression, in which case handling the first lhs + // variable will cause all lhs variables to have a type + // assigned, and we are done as well. + if debug { + for _, obj := range lhs0 { + assert(obj.typ != nil) + } + } + break + } + } + + check.arityMatch(s, nil) + + // declare all variables + // (only at this point are the variable scopes (parents) set) + scopePos := s.End() // see constant declarations + for i, name := range s.Names { + // see constant declarations + check.declare(check.scope, name, lhs0[i], scopePos) + } + + default: + check.invalidAST(s.Pos(), "invalid token %s", d.Tok) + } + + case *ast.TypeSpec: + obj := NewTypeName(s.Name.Pos(), pkg, s.Name.Name, nil) + // spec: "The scope of a type identifier declared inside a function + // begins at the identifier in the TypeSpec and ends at the end of + // the innermost containing block." + scopePos := s.Name.Pos() + check.declare(check.scope, s.Name, obj, scopePos) + check.typeDecl(obj, s.Type, nil, nil) + + default: + check.invalidAST(s.Pos(), "const, type, or var declaration expected") + } + } + + default: + check.invalidAST(d.Pos(), "unknown ast.Decl node %T", d) + } +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/types/errors.go b/Godeps/_workspace/src/golang.org/x/tools/go/types/errors.go new file mode 100644 index 0000000000..0c0049b1f3 --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/types/errors.go @@ -0,0 +1,103 @@ +// Copyright 2012 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// This file implements various error reporters. + +package types + +import ( + "fmt" + "go/ast" + "go/token" + "strings" +) + +func assert(p bool) { + if !p { + panic("assertion failed") + } +} + +func unreachable() { + panic("unreachable") +} + +func (check *Checker) qualifier(pkg *Package) string { + if pkg != check.pkg { + return pkg.path + } + return "" +} + +func (check *Checker) sprintf(format string, args ...interface{}) string { + for i, arg := range args { + switch a := arg.(type) { + case nil: + arg = "" + case operand: + panic("internal error: should always pass *operand") + case *operand: + arg = operandString(a, check.qualifier) + case token.Pos: + arg = check.fset.Position(a).String() + case ast.Expr: + arg = ExprString(a) + case Object: + arg = ObjectString(a, check.qualifier) + case Type: + arg = TypeString(a, check.qualifier) + } + args[i] = arg + } + return fmt.Sprintf(format, args...) +} + +func (check *Checker) trace(pos token.Pos, format string, args ...interface{}) { + fmt.Printf("%s:\t%s%s\n", + check.fset.Position(pos), + strings.Repeat(". ", check.indent), + check.sprintf(format, args...), + ) +} + +// dump is only needed for debugging +func (check *Checker) dump(format string, args ...interface{}) { + fmt.Println(check.sprintf(format, args...)) +} + +func (check *Checker) err(pos token.Pos, msg string, soft bool) { + err := Error{check.fset, pos, msg, soft} + if check.firstErr == nil { + check.firstErr = err + } + f := check.conf.Error + if f == nil { + panic(bailout{}) // report only first error + } + f(err) +} + +func (check *Checker) error(pos token.Pos, msg string) { + check.err(pos, msg, false) +} + +func (check *Checker) errorf(pos token.Pos, format string, args ...interface{}) { + check.err(pos, check.sprintf(format, args...), false) +} + +func (check *Checker) softErrorf(pos token.Pos, format string, args ...interface{}) { + check.err(pos, check.sprintf(format, args...), true) +} + +func (check *Checker) invalidAST(pos token.Pos, format string, args ...interface{}) { + check.errorf(pos, "invalid AST: "+format, args...) +} + +func (check *Checker) invalidArg(pos token.Pos, format string, args ...interface{}) { + check.errorf(pos, "invalid argument: "+format, args...) +} + +func (check *Checker) invalidOp(pos token.Pos, format string, args ...interface{}) { + check.errorf(pos, "invalid operation: "+format, args...) +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/types/eval.go b/Godeps/_workspace/src/golang.org/x/tools/go/types/eval.go new file mode 100644 index 0000000000..c09f2a3ba4 --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/types/eval.go @@ -0,0 +1,87 @@ +// Copyright 2013 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package types + +import ( + "fmt" + "go/parser" + "go/token" +) + +// Eval returns the type and, if constant, the value for the +// expression expr, evaluated at position pos of package pkg, +// which must have been derived from type-checking an AST with +// complete position information relative to the provided file +// set. +// +// If the expression contains function literals, their bodies +// are ignored (i.e., the bodies are not type-checked). +// +// If pkg == nil, the Universe scope is used and the provided +// position pos is ignored. If pkg != nil, and pos is invalid, +// the package scope is used. Otherwise, pos must belong to the +// package. +// +// An error is returned if pos is not within the package or +// if the node cannot be evaluated. +// +// Note: Eval should not be used instead of running Check to compute +// types and values, but in addition to Check. Eval will re-evaluate +// its argument each time, and it also does not know about the context +// in which an expression is used (e.g., an assignment). Thus, top- +// level untyped constants will return an untyped type rather then the +// respective context-specific type. +// +func Eval(fset *token.FileSet, pkg *Package, pos token.Pos, expr string) (tv TypeAndValue, err error) { + // determine scope + var scope *Scope + if pkg == nil { + scope = Universe + pos = token.NoPos + } else if !pos.IsValid() { + scope = pkg.scope + } else { + // The package scope extent (position information) may be + // incorrect (files spread accross a wide range of fset + // positions) - ignore it and just consider its children + // (file scopes). + for _, fscope := range pkg.scope.children { + if scope = fscope.Innermost(pos); scope != nil { + break + } + } + if scope == nil || debug { + s := scope + for s != nil && s != pkg.scope { + s = s.parent + } + // s == nil || s == pkg.scope + if s == nil { + return TypeAndValue{}, fmt.Errorf("no position %s found in package %s", fset.Position(pos), pkg.name) + } + } + } + + // parse expressions + // BUG(gri) In case of type-checking errors below, the type checker + // doesn't have the correct file set for expr. The correct + // solution requires a ParseExpr that uses the incoming + // file set fset. + node, err := parser.ParseExpr(expr) + if err != nil { + return TypeAndValue{}, err + } + + // initialize checker + check := NewChecker(nil, fset, pkg, nil) + check.scope = scope + check.pos = pos + defer check.handleBailout(&err) + + // evaluate node + var x operand + check.rawExpr(&x, node, nil) + return TypeAndValue{x.mode, x.typ, x.val}, err +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/types/eval_test.go b/Godeps/_workspace/src/golang.org/x/tools/go/types/eval_test.go new file mode 100644 index 0000000000..b68b244f95 --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/types/eval_test.go @@ -0,0 +1,186 @@ +// Copyright 2013 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// This file contains tests for Eval. + +package types_test + +import ( + "go/ast" + "go/parser" + "go/token" + "strings" + "testing" + + _ "golang.org/x/tools/go/gcimporter" + . "golang.org/x/tools/go/types" +) + +func testEval(t *testing.T, fset *token.FileSet, pkg *Package, pos token.Pos, expr string, typ Type, typStr, valStr string) { + gotTv, err := Eval(fset, pkg, pos, expr) + if err != nil { + t.Errorf("Eval(%q) failed: %s", expr, err) + return + } + if gotTv.Type == nil { + t.Errorf("Eval(%q) got nil type but no error", expr) + return + } + + // compare types + if typ != nil { + // we have a type, check identity + if !Identical(gotTv.Type, typ) { + t.Errorf("Eval(%q) got type %s, want %s", expr, gotTv.Type, typ) + return + } + } else { + // we have a string, compare type string + gotStr := gotTv.Type.String() + if gotStr != typStr { + t.Errorf("Eval(%q) got type %s, want %s", expr, gotStr, typStr) + return + } + } + + // compare values + gotStr := "" + if gotTv.Value != nil { + gotStr = gotTv.Value.String() + } + if gotStr != valStr { + t.Errorf("Eval(%q) got value %s, want %s", expr, gotStr, valStr) + } +} + +func TestEvalBasic(t *testing.T) { + fset := token.NewFileSet() + for _, typ := range Typ[Bool : String+1] { + testEval(t, fset, nil, token.NoPos, typ.Name(), typ, "", "") + } +} + +func TestEvalComposite(t *testing.T) { + fset := token.NewFileSet() + for _, test := range independentTestTypes { + testEval(t, fset, nil, token.NoPos, test.src, nil, test.str, "") + } +} + +func TestEvalArith(t *testing.T) { + var tests = []string{ + `true`, + `false == false`, + `12345678 + 87654321 == 99999999`, + `10 * 20 == 200`, + `(1<<1000)*2 >> 100 == 2<<900`, + `"foo" + "bar" == "foobar"`, + `"abc" <= "bcd"`, + `len([10]struct{}{}) == 2*5`, + } + fset := token.NewFileSet() + for _, test := range tests { + testEval(t, fset, nil, token.NoPos, test, Typ[UntypedBool], "", "true") + } +} + +func TestEvalPos(t *testing.T) { + skipSpecialPlatforms(t) + + // The contents of /*-style comments are of the form + // expr => value, type + // where value may be the empty string. + // Each expr is evaluated at the position of the comment + // and the result is compared with the expected value + // and type. + var sources = []string{ + ` + package p + import "fmt" + import m "math" + const c = 3.0 + type T []int + func f(a int, s string) float64 { + fmt.Println("calling f") + _ = m.Pi // use package math + const d int = c + 1 + var x int + x = a + len(s) + return float64(x) + /* true => true, untyped bool */ + /* fmt.Println => , func(a ...interface{}) (n int, err error) */ + /* c => 3, untyped float */ + /* T => , p.T */ + /* a => , int */ + /* s => , string */ + /* d => 4, int */ + /* x => , int */ + /* d/c => 1, int */ + /* c/2 => 3/2, untyped float */ + /* m.Pi < m.E => false, untyped bool */ + } + `, + ` + package p + /* c => 3, untyped float */ + type T1 /* T1 => , p.T1 */ struct {} + var v1 /* v1 => , int */ = 42 + func /* f1 => , func(v1 float64) */ f1(v1 float64) { + /* f1 => , func(v1 float64) */ + /* v1 => , float64 */ + var c /* c => 3, untyped float */ = "foo" /* c => , string */ + { + var c struct { + c /* c => , string */ int + } + /* c => , struct{c int} */ + _ = c + } + _ = func(a, b, c int) /* c => , string */ { + /* c => , int */ + } + _ = c + type FT /* FT => , p.FT */ interface{} + } + `, + ` + package p + /* T => , p.T */ + `, + } + + fset := token.NewFileSet() + var files []*ast.File + for i, src := range sources { + file, err := parser.ParseFile(fset, "p", src, parser.ParseComments) + if err != nil { + t.Fatalf("could not parse file %d: %s", i, err) + } + files = append(files, file) + } + + pkg, err := Check("p", fset, files) + if err != nil { + t.Fatal(err) + } + + for _, file := range files { + for _, group := range file.Comments { + for _, comment := range group.List { + s := comment.Text + if len(s) >= 4 && s[:2] == "/*" && s[len(s)-2:] == "*/" { + str, typ := split(s[2:len(s)-2], ", ") + str, val := split(str, "=>") + testEval(t, fset, pkg, comment.Pos(), str, nil, typ, val) + } + } + } + } +} + +// split splits string s at the first occurrence of s. +func split(s, sep string) (string, string) { + i := strings.Index(s, sep) + return strings.TrimSpace(s[:i]), strings.TrimSpace(s[i+len(sep):]) +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/types/expr.go b/Godeps/_workspace/src/golang.org/x/tools/go/types/expr.go new file mode 100644 index 0000000000..6efc7b4309 --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/types/expr.go @@ -0,0 +1,1497 @@ +// Copyright 2012 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// This file implements typechecking of expressions. + +package types + +import ( + "fmt" + "go/ast" + "go/token" + "math" + + "golang.org/x/tools/go/exact" +) + +/* +Basic algorithm: + +Expressions are checked recursively, top down. Expression checker functions +are generally of the form: + + func f(x *operand, e *ast.Expr, ...) + +where e is the expression to be checked, and x is the result of the check. +The check performed by f may fail in which case x.mode == invalid, and +related error messages will have been issued by f. + +If a hint argument is present, it is the composite literal element type +of an outer composite literal; it is used to type-check composite literal +elements that have no explicit type specification in the source +(e.g.: []T{{...}, {...}}, the hint is the type T in this case). + +All expressions are checked via rawExpr, which dispatches according +to expression kind. Upon returning, rawExpr is recording the types and +constant values for all expressions that have an untyped type (those types +may change on the way up in the expression tree). Usually these are constants, +but the results of comparisons or non-constant shifts of untyped constants +may also be untyped, but not constant. + +Untyped expressions may eventually become fully typed (i.e., not untyped), +typically when the value is assigned to a variable, or is used otherwise. +The updateExprType method is used to record this final type and update +the recorded types: the type-checked expression tree is again traversed down, +and the new type is propagated as needed. Untyped constant expression values +that become fully typed must now be representable by the full type (constant +sub-expression trees are left alone except for their roots). This mechanism +ensures that a client sees the actual (run-time) type an untyped value would +have. It also permits type-checking of lhs shift operands "as if the shift +were not present": when updateExprType visits an untyped lhs shift operand +and assigns it it's final type, that type must be an integer type, and a +constant lhs must be representable as an integer. + +When an expression gets its final type, either on the way out from rawExpr, +on the way down in updateExprType, or at the end of the type checker run, +the type (and constant value, if any) is recorded via Info.Types, if present. +*/ + +type opPredicates map[token.Token]func(Type) bool + +var unaryOpPredicates = opPredicates{ + token.ADD: isNumeric, + token.SUB: isNumeric, + token.XOR: isInteger, + token.NOT: isBoolean, +} + +func (check *Checker) op(m opPredicates, x *operand, op token.Token) bool { + if pred := m[op]; pred != nil { + if !pred(x.typ) { + check.invalidOp(x.pos(), "operator %s not defined for %s", op, x) + return false + } + } else { + check.invalidAST(x.pos(), "unknown operator %s", op) + return false + } + return true +} + +// The unary expression e may be nil. It's passed in for better error messages only. +func (check *Checker) unary(x *operand, e *ast.UnaryExpr, op token.Token) { + switch op { + case token.AND: + // spec: "As an exception to the addressability + // requirement x may also be a composite literal." + if _, ok := unparen(x.expr).(*ast.CompositeLit); !ok && x.mode != variable { + check.invalidOp(x.pos(), "cannot take address of %s", x) + x.mode = invalid + return + } + x.mode = value + x.typ = &Pointer{base: x.typ} + return + + case token.ARROW: + typ, ok := x.typ.Underlying().(*Chan) + if !ok { + check.invalidOp(x.pos(), "cannot receive from non-channel %s", x) + x.mode = invalid + return + } + if typ.dir == SendOnly { + check.invalidOp(x.pos(), "cannot receive from send-only channel %s", x) + x.mode = invalid + return + } + x.mode = commaok + x.typ = typ.elem + check.hasCallOrRecv = true + return + } + + if !check.op(unaryOpPredicates, x, op) { + x.mode = invalid + return + } + + if x.mode == constant { + typ := x.typ.Underlying().(*Basic) + size := -1 + if isUnsigned(typ) { + size = int(check.conf.sizeof(typ)) + } + x.val = exact.UnaryOp(op, x.val, size) + // Typed constants must be representable in + // their type after each constant operation. + if isTyped(typ) { + if e != nil { + x.expr = e // for better error message + } + check.representable(x, typ) + } + return + } + + x.mode = value + // x.typ remains unchanged +} + +func isShift(op token.Token) bool { + return op == token.SHL || op == token.SHR +} + +func isComparison(op token.Token) bool { + // Note: tokens are not ordered well to make this much easier + switch op { + case token.EQL, token.NEQ, token.LSS, token.LEQ, token.GTR, token.GEQ: + return true + } + return false +} + +func fitsFloat32(x exact.Value) bool { + f32, _ := exact.Float32Val(x) + f := float64(f32) + return !math.IsInf(f, 0) +} + +func roundFloat32(x exact.Value) exact.Value { + f32, _ := exact.Float32Val(x) + f := float64(f32) + if !math.IsInf(f, 0) { + return exact.MakeFloat64(f) + } + return nil +} + +func fitsFloat64(x exact.Value) bool { + f, _ := exact.Float64Val(x) + return !math.IsInf(f, 0) +} + +func roundFloat64(x exact.Value) exact.Value { + f, _ := exact.Float64Val(x) + if !math.IsInf(f, 0) { + return exact.MakeFloat64(f) + } + return nil +} + +// representableConst reports whether x can be represented as +// value of the given basic type kind and for the configuration +// provided (only needed for int/uint sizes). +// +// If rounded != nil, *rounded is set to the rounded value of x for +// representable floating-point values; it is left alone otherwise. +// It is ok to provide the addressof the first argument for rounded. +func representableConst(x exact.Value, conf *Config, as BasicKind, rounded *exact.Value) bool { + switch x.Kind() { + case exact.Unknown: + return true + + case exact.Bool: + return as == Bool || as == UntypedBool + + case exact.Int: + if x, ok := exact.Int64Val(x); ok { + switch as { + case Int: + var s = uint(conf.sizeof(Typ[as])) * 8 + return int64(-1)<<(s-1) <= x && x <= int64(1)<<(s-1)-1 + case Int8: + const s = 8 + return -1<<(s-1) <= x && x <= 1<<(s-1)-1 + case Int16: + const s = 16 + return -1<<(s-1) <= x && x <= 1<<(s-1)-1 + case Int32: + const s = 32 + return -1<<(s-1) <= x && x <= 1<<(s-1)-1 + case Int64: + return true + case Uint, Uintptr: + if s := uint(conf.sizeof(Typ[as])) * 8; s < 64 { + return 0 <= x && x <= int64(1)<= 0 && n <= int(s) + case Uint64: + return exact.Sign(x) >= 0 && n <= 64 + case Float32, Complex64: + if rounded == nil { + return fitsFloat32(x) + } + r := roundFloat32(x) + if r != nil { + *rounded = r + return true + } + case Float64, Complex128: + if rounded == nil { + return fitsFloat64(x) + } + r := roundFloat64(x) + if r != nil { + *rounded = r + return true + } + case UntypedInt, UntypedFloat, UntypedComplex: + return true + } + + case exact.Float: + switch as { + case Float32, Complex64: + if rounded == nil { + return fitsFloat32(x) + } + r := roundFloat32(x) + if r != nil { + *rounded = r + return true + } + case Float64, Complex128: + if rounded == nil { + return fitsFloat64(x) + } + r := roundFloat64(x) + if r != nil { + *rounded = r + return true + } + case UntypedFloat, UntypedComplex: + return true + } + + case exact.Complex: + switch as { + case Complex64: + if rounded == nil { + return fitsFloat32(exact.Real(x)) && fitsFloat32(exact.Imag(x)) + } + re := roundFloat32(exact.Real(x)) + im := roundFloat32(exact.Imag(x)) + if re != nil && im != nil { + *rounded = exact.BinaryOp(re, token.ADD, exact.MakeImag(im)) + return true + } + case Complex128: + if rounded == nil { + return fitsFloat64(exact.Real(x)) && fitsFloat64(exact.Imag(x)) + } + re := roundFloat64(exact.Real(x)) + im := roundFloat64(exact.Imag(x)) + if re != nil && im != nil { + *rounded = exact.BinaryOp(re, token.ADD, exact.MakeImag(im)) + return true + } + case UntypedComplex: + return true + } + + case exact.String: + return as == String || as == UntypedString + + default: + unreachable() + } + + return false +} + +// representable checks that a constant operand is representable in the given basic type. +func (check *Checker) representable(x *operand, typ *Basic) { + assert(x.mode == constant) + if !representableConst(x.val, check.conf, typ.kind, &x.val) { + var msg string + if isNumeric(x.typ) && isNumeric(typ) { + // numeric conversion : error msg + // + // integer -> integer : overflows + // integer -> float : overflows (actually not possible) + // float -> integer : truncated + // float -> float : overflows + // + if !isInteger(x.typ) && isInteger(typ) { + msg = "%s truncated to %s" + } else { + msg = "%s overflows %s" + } + } else { + msg = "cannot convert %s to %s" + } + check.errorf(x.pos(), msg, x, typ) + x.mode = invalid + } +} + +// updateExprType updates the type of x to typ and invokes itself +// recursively for the operands of x, depending on expression kind. +// If typ is still an untyped and not the final type, updateExprType +// only updates the recorded untyped type for x and possibly its +// operands. Otherwise (i.e., typ is not an untyped type anymore, +// or it is the final type for x), the type and value are recorded. +// Also, if x is a constant, it must be representable as a value of typ, +// and if x is the (formerly untyped) lhs operand of a non-constant +// shift, it must be an integer value. +// +func (check *Checker) updateExprType(x ast.Expr, typ Type, final bool) { + old, found := check.untyped[x] + if !found { + return // nothing to do + } + + // update operands of x if necessary + switch x := x.(type) { + case *ast.BadExpr, + *ast.FuncLit, + *ast.CompositeLit, + *ast.IndexExpr, + *ast.SliceExpr, + *ast.TypeAssertExpr, + *ast.StarExpr, + *ast.KeyValueExpr, + *ast.ArrayType, + *ast.StructType, + *ast.FuncType, + *ast.InterfaceType, + *ast.MapType, + *ast.ChanType: + // These expression are never untyped - nothing to do. + // The respective sub-expressions got their final types + // upon assignment or use. + if debug { + check.dump("%s: found old type(%s): %s (new: %s)", x.Pos(), x, old.typ, typ) + unreachable() + } + return + + case *ast.CallExpr: + // Resulting in an untyped constant (e.g., built-in complex). + // The respective calls take care of calling updateExprType + // for the arguments if necessary. + + case *ast.Ident, *ast.BasicLit, *ast.SelectorExpr: + // An identifier denoting a constant, a constant literal, + // or a qualified identifier (imported untyped constant). + // No operands to take care of. + + case *ast.ParenExpr: + check.updateExprType(x.X, typ, final) + + case *ast.UnaryExpr: + // If x is a constant, the operands were constants. + // They don't need to be updated since they never + // get "materialized" into a typed value; and they + // will be processed at the end of the type check. + if old.val != nil { + break + } + check.updateExprType(x.X, typ, final) + + case *ast.BinaryExpr: + if old.val != nil { + break // see comment for unary expressions + } + if isComparison(x.Op) { + // The result type is independent of operand types + // and the operand types must have final types. + } else if isShift(x.Op) { + // The result type depends only on lhs operand. + // The rhs type was updated when checking the shift. + check.updateExprType(x.X, typ, final) + } else { + // The operand types match the result type. + check.updateExprType(x.X, typ, final) + check.updateExprType(x.Y, typ, final) + } + + default: + unreachable() + } + + // If the new type is not final and still untyped, just + // update the recorded type. + if !final && isUntyped(typ) { + old.typ = typ.Underlying().(*Basic) + check.untyped[x] = old + return + } + + // Otherwise we have the final (typed or untyped type). + // Remove it from the map of yet untyped expressions. + delete(check.untyped, x) + + // If x is the lhs of a shift, its final type must be integer. + // We already know from the shift check that it is representable + // as an integer if it is a constant. + if old.isLhs && !isInteger(typ) { + check.invalidOp(x.Pos(), "shifted operand %s (type %s) must be integer", x, typ) + return + } + + // Everything's fine, record final type and value for x. + check.recordTypeAndValue(x, old.mode, typ, old.val) +} + +// updateExprVal updates the value of x to val. +func (check *Checker) updateExprVal(x ast.Expr, val exact.Value) { + if info, ok := check.untyped[x]; ok { + info.val = val + check.untyped[x] = info + } +} + +// convertUntyped attempts to set the type of an untyped value to the target type. +func (check *Checker) convertUntyped(x *operand, target Type) { + if x.mode == invalid || isTyped(x.typ) || target == Typ[Invalid] { + return + } + + // TODO(gri) Sloppy code - clean up. This function is central + // to assignment and expression checking. + + if isUntyped(target) { + // both x and target are untyped + xkind := x.typ.(*Basic).kind + tkind := target.(*Basic).kind + if isNumeric(x.typ) && isNumeric(target) { + if xkind < tkind { + x.typ = target + check.updateExprType(x.expr, target, false) + } + } else if xkind != tkind { + goto Error + } + return + } + + // typed target + switch t := target.Underlying().(type) { + case *Basic: + if x.mode == constant { + check.representable(x, t) + if x.mode == invalid { + return + } + // expression value may have been rounded - update if needed + // TODO(gri) A floating-point value may silently underflow to + // zero. If it was negative, the sign is lost. See issue 6898. + check.updateExprVal(x.expr, x.val) + } else { + // Non-constant untyped values may appear as the + // result of comparisons (untyped bool), intermediate + // (delayed-checked) rhs operands of shifts, and as + // the value nil. + switch x.typ.(*Basic).kind { + case UntypedBool: + if !isBoolean(target) { + goto Error + } + case UntypedInt, UntypedRune, UntypedFloat, UntypedComplex: + if !isNumeric(target) { + goto Error + } + case UntypedString: + // Non-constant untyped string values are not + // permitted by the spec and should not occur. + unreachable() + case UntypedNil: + // Unsafe.Pointer is a basic type that includes nil. + if !hasNil(target) { + goto Error + } + default: + goto Error + } + } + case *Interface: + if !x.isNil() && !t.Empty() /* empty interfaces are ok */ { + goto Error + } + // Update operand types to the default type rather then + // the target (interface) type: values must have concrete + // dynamic types. If the value is nil, keep it untyped + // (this is important for tools such as go vet which need + // the dynamic type for argument checking of say, print + // functions) + if x.isNil() { + target = Typ[UntypedNil] + } else { + // cannot assign untyped values to non-empty interfaces + if !t.Empty() { + goto Error + } + target = defaultType(x.typ) + } + case *Pointer, *Signature, *Slice, *Map, *Chan: + if !x.isNil() { + goto Error + } + // keep nil untyped - see comment for interfaces, above + target = Typ[UntypedNil] + default: + goto Error + } + + x.typ = target + check.updateExprType(x.expr, target, true) // UntypedNils are final + return + +Error: + check.errorf(x.pos(), "cannot convert %s to %s", x, target) + x.mode = invalid +} + +func (check *Checker) comparison(x, y *operand, op token.Token) { + // spec: "In any comparison, the first operand must be assignable + // to the type of the second operand, or vice versa." + err := "" + if x.assignableTo(check.conf, y.typ) || y.assignableTo(check.conf, x.typ) { + defined := false + switch op { + case token.EQL, token.NEQ: + // spec: "The equality operators == and != apply to operands that are comparable." + defined = Comparable(x.typ) || x.isNil() && hasNil(y.typ) || y.isNil() && hasNil(x.typ) + case token.LSS, token.LEQ, token.GTR, token.GEQ: + // spec: The ordering operators <, <=, >, and >= apply to operands that are ordered." + defined = isOrdered(x.typ) + default: + unreachable() + } + if !defined { + typ := x.typ + if x.isNil() { + typ = y.typ + } + err = check.sprintf("operator %s not defined for %s", op, typ) + } + } else { + err = check.sprintf("mismatched types %s and %s", x.typ, y.typ) + } + + if err != "" { + check.errorf(x.pos(), "cannot compare %s %s %s (%s)", x.expr, op, y.expr, err) + x.mode = invalid + return + } + + if x.mode == constant && y.mode == constant { + x.val = exact.MakeBool(exact.Compare(x.val, op, y.val)) + // The operands are never materialized; no need to update + // their types. + } else { + x.mode = value + // The operands have now their final types, which at run- + // time will be materialized. Update the expression trees. + // If the current types are untyped, the materialized type + // is the respective default type. + check.updateExprType(x.expr, defaultType(x.typ), true) + check.updateExprType(y.expr, defaultType(y.typ), true) + } + + // spec: "Comparison operators compare two operands and yield + // an untyped boolean value." + x.typ = Typ[UntypedBool] +} + +func (check *Checker) shift(x, y *operand, op token.Token) { + untypedx := isUntyped(x.typ) + + // The lhs must be of integer type or be representable + // as an integer; otherwise the shift has no chance. + if !x.isInteger() { + check.invalidOp(x.pos(), "shifted operand %s must be integer", x) + x.mode = invalid + return + } + + // spec: "The right operand in a shift expression must have unsigned + // integer type or be an untyped constant that can be converted to + // unsigned integer type." + switch { + case isInteger(y.typ) && isUnsigned(y.typ): + // nothing to do + case isUntyped(y.typ): + check.convertUntyped(y, Typ[UntypedInt]) + if y.mode == invalid { + x.mode = invalid + return + } + default: + check.invalidOp(y.pos(), "shift count %s must be unsigned integer", y) + x.mode = invalid + return + } + + if x.mode == constant { + if y.mode == constant { + // rhs must be an integer value + if !y.isInteger() { + check.invalidOp(y.pos(), "shift count %s must be unsigned integer", y) + x.mode = invalid + return + } + // rhs must be within reasonable bounds + const stupidShift = 1023 - 1 + 52 // so we can express smallestFloat64 + s, ok := exact.Uint64Val(y.val) + if !ok || s > stupidShift { + check.invalidOp(y.pos(), "stupid shift count %s", y) + x.mode = invalid + return + } + // The lhs is representable as an integer but may not be an integer + // (e.g., 2.0, an untyped float) - this can only happen for untyped + // non-integer numeric constants. Correct the type so that the shift + // result is of integer type. + if !isInteger(x.typ) { + x.typ = Typ[UntypedInt] + } + x.val = exact.Shift(x.val, op, uint(s)) + return + } + + // non-constant shift with constant lhs + if untypedx { + // spec: "If the left operand of a non-constant shift + // expression is an untyped constant, the type of the + // constant is what it would be if the shift expression + // were replaced by its left operand alone.". + // + // Delay operand checking until we know the final type: + // The lhs expression must be in the untyped map, mark + // the entry as lhs shift operand. + info, found := check.untyped[x.expr] + assert(found) + info.isLhs = true + check.untyped[x.expr] = info + // keep x's type + x.mode = value + return + } + } + + // constant rhs must be >= 0 + if y.mode == constant && exact.Sign(y.val) < 0 { + check.invalidOp(y.pos(), "shift count %s must not be negative", y) + } + + // non-constant shift - lhs must be an integer + if !isInteger(x.typ) { + check.invalidOp(x.pos(), "shifted operand %s must be integer", x) + x.mode = invalid + return + } + + x.mode = value +} + +var binaryOpPredicates = opPredicates{ + token.ADD: func(typ Type) bool { return isNumeric(typ) || isString(typ) }, + token.SUB: isNumeric, + token.MUL: isNumeric, + token.QUO: isNumeric, + token.REM: isInteger, + + token.AND: isInteger, + token.OR: isInteger, + token.XOR: isInteger, + token.AND_NOT: isInteger, + + token.LAND: isBoolean, + token.LOR: isBoolean, +} + +// The binary expression e may be nil. It's passed in for better error messages only. +func (check *Checker) binary(x *operand, e *ast.BinaryExpr, lhs, rhs ast.Expr, op token.Token) { + var y operand + + check.expr(x, lhs) + check.expr(&y, rhs) + + if x.mode == invalid { + return + } + if y.mode == invalid { + x.mode = invalid + x.expr = y.expr + return + } + + if isShift(op) { + check.shift(x, &y, op) + return + } + + check.convertUntyped(x, y.typ) + if x.mode == invalid { + return + } + check.convertUntyped(&y, x.typ) + if y.mode == invalid { + x.mode = invalid + return + } + + if isComparison(op) { + check.comparison(x, &y, op) + return + } + + if !Identical(x.typ, y.typ) { + // only report an error if we have valid types + // (otherwise we had an error reported elsewhere already) + if x.typ != Typ[Invalid] && y.typ != Typ[Invalid] { + check.invalidOp(x.pos(), "mismatched types %s and %s", x.typ, y.typ) + } + x.mode = invalid + return + } + + if !check.op(binaryOpPredicates, x, op) { + x.mode = invalid + return + } + + if (op == token.QUO || op == token.REM) && (x.mode == constant || isInteger(x.typ)) && y.mode == constant && exact.Sign(y.val) == 0 { + check.invalidOp(y.pos(), "division by zero") + x.mode = invalid + return + } + + if x.mode == constant && y.mode == constant { + typ := x.typ.Underlying().(*Basic) + // force integer division of integer operands + if op == token.QUO && isInteger(typ) { + op = token.QUO_ASSIGN + } + x.val = exact.BinaryOp(x.val, op, y.val) + // Typed constants must be representable in + // their type after each constant operation. + if isTyped(typ) { + if e != nil { + x.expr = e // for better error message + } + check.representable(x, typ) + } + return + } + + x.mode = value + // x.typ is unchanged +} + +// index checks an index expression for validity. +// If max >= 0, it is the upper bound for index. +// If index is valid and the result i >= 0, then i is the constant value of index. +func (check *Checker) index(index ast.Expr, max int64) (i int64, valid bool) { + var x operand + check.expr(&x, index) + if x.mode == invalid { + return + } + + // an untyped constant must be representable as Int + check.convertUntyped(&x, Typ[Int]) + if x.mode == invalid { + return + } + + // the index must be of integer type + if !isInteger(x.typ) { + check.invalidArg(x.pos(), "index %s must be integer", &x) + return + } + + // a constant index i must be in bounds + if x.mode == constant { + if exact.Sign(x.val) < 0 { + check.invalidArg(x.pos(), "index %s must not be negative", &x) + return + } + i, valid = exact.Int64Val(x.val) + if !valid || max >= 0 && i >= max { + check.errorf(x.pos(), "index %s is out of bounds", &x) + return i, false + } + // 0 <= i [ && i < max ] + return i, true + } + + return -1, true +} + +// indexElts checks the elements (elts) of an array or slice composite literal +// against the literal's element type (typ), and the element indices against +// the literal length if known (length >= 0). It returns the length of the +// literal (maximum index value + 1). +// +func (check *Checker) indexedElts(elts []ast.Expr, typ Type, length int64) int64 { + visited := make(map[int64]bool, len(elts)) + var index, max int64 + for _, e := range elts { + // determine and check index + validIndex := false + eval := e + if kv, _ := e.(*ast.KeyValueExpr); kv != nil { + if i, ok := check.index(kv.Key, length); ok { + if i >= 0 { + index = i + validIndex = true + } else { + check.errorf(e.Pos(), "index %s must be integer constant", kv.Key) + } + } + eval = kv.Value + } else if length >= 0 && index >= length { + check.errorf(e.Pos(), "index %d is out of bounds (>= %d)", index, length) + } else { + validIndex = true + } + + // if we have a valid index, check for duplicate entries + if validIndex { + if visited[index] { + check.errorf(e.Pos(), "duplicate index %d in array or slice literal", index) + } + visited[index] = true + } + index++ + if index > max { + max = index + } + + // check element against composite literal element type + var x operand + check.exprWithHint(&x, eval, typ) + if !check.assignment(&x, typ) && x.mode != invalid { + check.errorf(x.pos(), "cannot use %s as %s value in array or slice literal", &x, typ) + } + } + return max +} + +// exprKind describes the kind of an expression; the kind +// determines if an expression is valid in 'statement context'. +type exprKind int + +const ( + conversion exprKind = iota + expression + statement +) + +// rawExpr typechecks expression e and initializes x with the expression +// value or type. If an error occurred, x.mode is set to invalid. +// If hint != nil, it is the type of a composite literal element. +// +func (check *Checker) rawExpr(x *operand, e ast.Expr, hint Type) exprKind { + if trace { + check.trace(e.Pos(), "%s", e) + check.indent++ + defer func() { + check.indent-- + check.trace(e.Pos(), "=> %s", x) + }() + } + + kind := check.exprInternal(x, e, hint) + + // convert x into a user-friendly set of values + // TODO(gri) this code can be simplified + var typ Type + var val exact.Value + switch x.mode { + case invalid: + typ = Typ[Invalid] + case novalue: + typ = (*Tuple)(nil) + case constant: + typ = x.typ + val = x.val + default: + typ = x.typ + } + assert(x.expr != nil && typ != nil) + + if isUntyped(typ) { + // delay type and value recording until we know the type + // or until the end of type checking + check.rememberUntyped(x.expr, false, x.mode, typ.(*Basic), val) + } else { + check.recordTypeAndValue(e, x.mode, typ, val) + } + + return kind +} + +// exprInternal contains the core of type checking of expressions. +// Must only be called by rawExpr. +// +func (check *Checker) exprInternal(x *operand, e ast.Expr, hint Type) exprKind { + // make sure x has a valid state in case of bailout + // (was issue 5770) + x.mode = invalid + x.typ = Typ[Invalid] + + switch e := e.(type) { + case *ast.BadExpr: + goto Error // error was reported before + + case *ast.Ident: + check.ident(x, e, nil, nil) + + case *ast.Ellipsis: + // ellipses are handled explicitly where they are legal + // (array composite literals and parameter lists) + check.error(e.Pos(), "invalid use of '...'") + goto Error + + case *ast.BasicLit: + x.setConst(e.Kind, e.Value) + if x.mode == invalid { + check.invalidAST(e.Pos(), "invalid literal %v", e.Value) + goto Error + } + + case *ast.FuncLit: + if sig, ok := check.typ(e.Type).(*Signature); ok { + // Anonymous functions are considered part of the + // init expression/func declaration which contains + // them: use existing package-level declaration info. + check.funcBody(check.decl, "", sig, e.Body) + x.mode = value + x.typ = sig + } else { + check.invalidAST(e.Pos(), "invalid function literal %s", e) + goto Error + } + + case *ast.CompositeLit: + typ := hint + openArray := false + if e.Type != nil { + // [...]T array types may only appear with composite literals. + // Check for them here so we don't have to handle ... in general. + typ = nil + if atyp, _ := e.Type.(*ast.ArrayType); atyp != nil && atyp.Len != nil { + if ellip, _ := atyp.Len.(*ast.Ellipsis); ellip != nil && ellip.Elt == nil { + // We have an "open" [...]T array type. + // Create a new ArrayType with unknown length (-1) + // and finish setting it up after analyzing the literal. + typ = &Array{len: -1, elem: check.typ(atyp.Elt)} + openArray = true + } + } + if typ == nil { + typ = check.typ(e.Type) + } + } + if typ == nil { + // TODO(gri) provide better error messages depending on context + check.error(e.Pos(), "missing type in composite literal") + goto Error + } + + switch typ, _ := deref(typ); utyp := typ.Underlying().(type) { + case *Struct: + if len(e.Elts) == 0 { + break + } + fields := utyp.fields + if _, ok := e.Elts[0].(*ast.KeyValueExpr); ok { + // all elements must have keys + visited := make([]bool, len(fields)) + for _, e := range e.Elts { + kv, _ := e.(*ast.KeyValueExpr) + if kv == nil { + check.error(e.Pos(), "mixture of field:value and value elements in struct literal") + continue + } + key, _ := kv.Key.(*ast.Ident) + if key == nil { + check.errorf(kv.Pos(), "invalid field name %s in struct literal", kv.Key) + continue + } + i := fieldIndex(utyp.fields, check.pkg, key.Name) + if i < 0 { + check.errorf(kv.Pos(), "unknown field %s in struct literal", key.Name) + continue + } + fld := fields[i] + check.recordUse(key, fld) + // 0 <= i < len(fields) + if visited[i] { + check.errorf(kv.Pos(), "duplicate field name %s in struct literal", key.Name) + continue + } + visited[i] = true + check.expr(x, kv.Value) + etyp := fld.typ + if !check.assignment(x, etyp) { + if x.mode != invalid { + check.errorf(x.pos(), "cannot use %s as %s value in struct literal", x, etyp) + } + continue + } + } + } else { + // no element must have a key + for i, e := range e.Elts { + if kv, _ := e.(*ast.KeyValueExpr); kv != nil { + check.error(kv.Pos(), "mixture of field:value and value elements in struct literal") + continue + } + check.expr(x, e) + if i >= len(fields) { + check.error(x.pos(), "too many values in struct literal") + break // cannot continue + } + // i < len(fields) + fld := fields[i] + if !fld.Exported() && fld.pkg != check.pkg { + check.errorf(x.pos(), "implicit assignment to unexported field %s in %s literal", fld.name, typ) + continue + } + etyp := fld.typ + if !check.assignment(x, etyp) { + if x.mode != invalid { + check.errorf(x.pos(), "cannot use %s as %s value in struct literal", x, etyp) + } + continue + } + } + if len(e.Elts) < len(fields) { + check.error(e.Rbrace, "too few values in struct literal") + // ok to continue + } + } + + case *Array: + n := check.indexedElts(e.Elts, utyp.elem, utyp.len) + // if we have an "open" [...]T array, set the length now that we know it + if openArray { + utyp.len = n + } + + case *Slice: + check.indexedElts(e.Elts, utyp.elem, -1) + + case *Map: + visited := make(map[interface{}][]Type, len(e.Elts)) + for _, e := range e.Elts { + kv, _ := e.(*ast.KeyValueExpr) + if kv == nil { + check.error(e.Pos(), "missing key in map literal") + continue + } + check.exprWithHint(x, kv.Key, utyp.key) + if !check.assignment(x, utyp.key) { + if x.mode != invalid { + check.errorf(x.pos(), "cannot use %s as %s key in map literal", x, utyp.key) + } + continue + } + if x.mode == constant { + duplicate := false + // if the key is of interface type, the type is also significant when checking for duplicates + if _, ok := utyp.key.Underlying().(*Interface); ok { + for _, vtyp := range visited[x.val] { + if Identical(vtyp, x.typ) { + duplicate = true + break + } + } + visited[x.val] = append(visited[x.val], x.typ) + } else { + _, duplicate = visited[x.val] + visited[x.val] = nil + } + if duplicate { + check.errorf(x.pos(), "duplicate key %s in map literal", x.val) + continue + } + } + check.exprWithHint(x, kv.Value, utyp.elem) + if !check.assignment(x, utyp.elem) { + if x.mode != invalid { + check.errorf(x.pos(), "cannot use %s as %s value in map literal", x, utyp.elem) + } + continue + } + } + + default: + // if utyp is invalid, an error was reported before + if utyp != Typ[Invalid] { + check.errorf(e.Pos(), "invalid composite literal type %s", typ) + goto Error + } + } + + x.mode = value + x.typ = typ + + case *ast.ParenExpr: + kind := check.rawExpr(x, e.X, nil) + x.expr = e + return kind + + case *ast.SelectorExpr: + check.selector(x, e) + + case *ast.IndexExpr: + check.expr(x, e.X) + if x.mode == invalid { + goto Error + } + + valid := false + length := int64(-1) // valid if >= 0 + switch typ := x.typ.Underlying().(type) { + case *Basic: + if isString(typ) { + valid = true + if x.mode == constant { + length = int64(len(exact.StringVal(x.val))) + } + // an indexed string always yields a byte value + // (not a constant) even if the string and the + // index are constant + x.mode = value + x.typ = universeByte // use 'byte' name + } + + case *Array: + valid = true + length = typ.len + if x.mode != variable { + x.mode = value + } + x.typ = typ.elem + + case *Pointer: + if typ, _ := typ.base.Underlying().(*Array); typ != nil { + valid = true + length = typ.len + x.mode = variable + x.typ = typ.elem + } + + case *Slice: + valid = true + x.mode = variable + x.typ = typ.elem + + case *Map: + var key operand + check.expr(&key, e.Index) + if !check.assignment(&key, typ.key) { + if key.mode != invalid { + check.invalidOp(key.pos(), "cannot use %s as map index of type %s", &key, typ.key) + } + goto Error + } + x.mode = mapindex + x.typ = typ.elem + x.expr = e + return expression + } + + if !valid { + check.invalidOp(x.pos(), "cannot index %s", x) + goto Error + } + + if e.Index == nil { + check.invalidAST(e.Pos(), "missing index for %s", x) + goto Error + } + + check.index(e.Index, length) + // ok to continue + + case *ast.SliceExpr: + check.expr(x, e.X) + if x.mode == invalid { + goto Error + } + + valid := false + length := int64(-1) // valid if >= 0 + switch typ := x.typ.Underlying().(type) { + case *Basic: + if isString(typ) { + if slice3(e) { + check.invalidOp(x.pos(), "3-index slice of string") + goto Error + } + valid = true + if x.mode == constant { + length = int64(len(exact.StringVal(x.val))) + } + // spec: "For untyped string operands the result + // is a non-constant value of type string." + if typ.kind == UntypedString { + x.typ = Typ[String] + } + } + + case *Array: + valid = true + length = typ.len + if x.mode != variable { + check.invalidOp(x.pos(), "cannot slice %s (value not addressable)", x) + goto Error + } + x.typ = &Slice{elem: typ.elem} + + case *Pointer: + if typ, _ := typ.base.Underlying().(*Array); typ != nil { + valid = true + length = typ.len + x.typ = &Slice{elem: typ.elem} + } + + case *Slice: + valid = true + // x.typ doesn't change + } + + if !valid { + check.invalidOp(x.pos(), "cannot slice %s", x) + goto Error + } + + x.mode = value + + // spec: "Only the first index may be omitted; it defaults to 0." + if slice3(e) && (e.High == nil || sliceMax(e) == nil) { + check.error(e.Rbrack, "2nd and 3rd index required in 3-index slice") + goto Error + } + + // check indices + var ind [3]int64 + for i, expr := range []ast.Expr{e.Low, e.High, sliceMax(e)} { + x := int64(-1) + switch { + case expr != nil: + // The "capacity" is only known statically for strings, arrays, + // and pointers to arrays, and it is the same as the length for + // those types. + max := int64(-1) + if length >= 0 { + max = length + 1 + } + if t, ok := check.index(expr, max); ok && t >= 0 { + x = t + } + case i == 0: + // default is 0 for the first index + x = 0 + case length >= 0: + // default is length (== capacity) otherwise + x = length + } + ind[i] = x + } + + // constant indices must be in range + // (check.index already checks that existing indices >= 0) + L: + for i, x := range ind[:len(ind)-1] { + if x > 0 { + for _, y := range ind[i+1:] { + if y >= 0 && x > y { + check.errorf(e.Rbrack, "invalid slice indices: %d > %d", x, y) + break L // only report one error, ok to continue + } + } + } + } + + case *ast.TypeAssertExpr: + check.expr(x, e.X) + if x.mode == invalid { + goto Error + } + xtyp, _ := x.typ.Underlying().(*Interface) + if xtyp == nil { + check.invalidOp(x.pos(), "%s is not an interface", x) + goto Error + } + // x.(type) expressions are handled explicitly in type switches + if e.Type == nil { + check.invalidAST(e.Pos(), "use of .(type) outside type switch") + goto Error + } + T := check.typ(e.Type) + if T == Typ[Invalid] { + goto Error + } + check.typeAssertion(x.pos(), x, xtyp, T) + x.mode = commaok + x.typ = T + + case *ast.CallExpr: + return check.call(x, e) + + case *ast.StarExpr: + check.exprOrType(x, e.X) + switch x.mode { + case invalid: + goto Error + case typexpr: + x.typ = &Pointer{base: x.typ} + default: + if typ, ok := x.typ.Underlying().(*Pointer); ok { + x.mode = variable + x.typ = typ.base + } else { + check.invalidOp(x.pos(), "cannot indirect %s", x) + goto Error + } + } + + case *ast.UnaryExpr: + check.expr(x, e.X) + if x.mode == invalid { + goto Error + } + check.unary(x, e, e.Op) + if x.mode == invalid { + goto Error + } + if e.Op == token.ARROW { + x.expr = e + return statement // receive operations may appear in statement context + } + + case *ast.BinaryExpr: + check.binary(x, e, e.X, e.Y, e.Op) + if x.mode == invalid { + goto Error + } + + case *ast.KeyValueExpr: + // key:value expressions are handled in composite literals + check.invalidAST(e.Pos(), "no key:value expected") + goto Error + + case *ast.ArrayType, *ast.StructType, *ast.FuncType, + *ast.InterfaceType, *ast.MapType, *ast.ChanType: + x.mode = typexpr + x.typ = check.typ(e) + // Note: rawExpr (caller of exprInternal) will call check.recordTypeAndValue + // even though check.typ has already called it. This is fine as both + // times the same expression and type are recorded. It is also not a + // performance issue because we only reach here for composite literal + // types, which are comparatively rare. + + default: + panic(fmt.Sprintf("%s: unknown expression type %T", check.fset.Position(e.Pos()), e)) + } + + // everything went well + x.expr = e + return expression + +Error: + x.mode = invalid + x.expr = e + return statement // avoid follow-up errors +} + +// typeAssertion checks that x.(T) is legal; xtyp must be the type of x. +func (check *Checker) typeAssertion(pos token.Pos, x *operand, xtyp *Interface, T Type) { + method, wrongType := assertableTo(xtyp, T) + if method == nil { + return + } + + var msg string + if wrongType { + msg = "wrong type for method" + } else { + msg = "missing method" + } + check.errorf(pos, "%s cannot have dynamic type %s (%s %s)", x, T, msg, method.name) +} + +// expr typechecks expression e and initializes x with the expression value. +// If an error occurred, x.mode is set to invalid. +// +func (check *Checker) expr(x *operand, e ast.Expr) { + check.rawExpr(x, e, nil) + var msg string + switch x.mode { + default: + return + case novalue: + msg = "used as value" + case builtin: + msg = "must be called" + case typexpr: + msg = "is not an expression" + } + check.errorf(x.pos(), "%s %s", x, msg) + x.mode = invalid +} + +// exprWithHint typechecks expression e and initializes x with the expression value. +// If an error occurred, x.mode is set to invalid. +// If hint != nil, it is the type of a composite literal element. +// +func (check *Checker) exprWithHint(x *operand, e ast.Expr, hint Type) { + assert(hint != nil) + check.rawExpr(x, e, hint) + var msg string + switch x.mode { + default: + return + case novalue: + msg = "used as value" + case builtin: + msg = "must be called" + case typexpr: + msg = "is not an expression" + } + check.errorf(x.pos(), "%s %s", x, msg) + x.mode = invalid +} + +// exprOrType typechecks expression or type e and initializes x with the expression value or type. +// If an error occurred, x.mode is set to invalid. +// +func (check *Checker) exprOrType(x *operand, e ast.Expr) { + check.rawExpr(x, e, nil) + if x.mode == novalue { + check.errorf(x.pos(), "%s used as value or type", x) + x.mode = invalid + } +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/types/exprstring.go b/Godeps/_workspace/src/golang.org/x/tools/go/types/exprstring.go new file mode 100644 index 0000000000..370bdf3532 --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/types/exprstring.go @@ -0,0 +1,220 @@ +// Copyright 2013 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// This file implements printing of expressions. + +package types + +import ( + "bytes" + "go/ast" +) + +// ExprString returns the (possibly simplified) string representation for x. +func ExprString(x ast.Expr) string { + var buf bytes.Buffer + WriteExpr(&buf, x) + return buf.String() +} + +// WriteExpr writes the (possibly simplified) string representation for x to buf. +func WriteExpr(buf *bytes.Buffer, x ast.Expr) { + // The AST preserves source-level parentheses so there is + // no need to introduce them here to correct for different + // operator precedences. (This assumes that the AST was + // generated by a Go parser.) + + switch x := x.(type) { + default: + buf.WriteString("(bad expr)") // nil, ast.BadExpr, ast.KeyValueExpr + + case *ast.Ident: + buf.WriteString(x.Name) + + case *ast.Ellipsis: + buf.WriteString("...") + if x.Elt != nil { + WriteExpr(buf, x.Elt) + } + + case *ast.BasicLit: + buf.WriteString(x.Value) + + case *ast.FuncLit: + buf.WriteByte('(') + WriteExpr(buf, x.Type) + buf.WriteString(" literal)") // simplified + + case *ast.CompositeLit: + buf.WriteByte('(') + WriteExpr(buf, x.Type) + buf.WriteString(" literal)") // simplified + + case *ast.ParenExpr: + buf.WriteByte('(') + WriteExpr(buf, x.X) + buf.WriteByte(')') + + case *ast.SelectorExpr: + WriteExpr(buf, x.X) + buf.WriteByte('.') + buf.WriteString(x.Sel.Name) + + case *ast.IndexExpr: + WriteExpr(buf, x.X) + buf.WriteByte('[') + WriteExpr(buf, x.Index) + buf.WriteByte(']') + + case *ast.SliceExpr: + WriteExpr(buf, x.X) + buf.WriteByte('[') + if x.Low != nil { + WriteExpr(buf, x.Low) + } + buf.WriteByte(':') + if x.High != nil { + WriteExpr(buf, x.High) + } + if x.Slice3 { + buf.WriteByte(':') + if x.Max != nil { + WriteExpr(buf, x.Max) + } + } + buf.WriteByte(']') + + case *ast.TypeAssertExpr: + WriteExpr(buf, x.X) + buf.WriteString(".(") + WriteExpr(buf, x.Type) + buf.WriteByte(')') + + case *ast.CallExpr: + WriteExpr(buf, x.Fun) + buf.WriteByte('(') + for i, arg := range x.Args { + if i > 0 { + buf.WriteString(", ") + } + WriteExpr(buf, arg) + } + if x.Ellipsis.IsValid() { + buf.WriteString("...") + } + buf.WriteByte(')') + + case *ast.StarExpr: + buf.WriteByte('*') + WriteExpr(buf, x.X) + + case *ast.UnaryExpr: + buf.WriteString(x.Op.String()) + WriteExpr(buf, x.X) + + case *ast.BinaryExpr: + WriteExpr(buf, x.X) + buf.WriteByte(' ') + buf.WriteString(x.Op.String()) + buf.WriteByte(' ') + WriteExpr(buf, x.Y) + + case *ast.ArrayType: + buf.WriteByte('[') + if x.Len != nil { + WriteExpr(buf, x.Len) + } + buf.WriteByte(']') + WriteExpr(buf, x.Elt) + + case *ast.StructType: + buf.WriteString("struct{") + writeFieldList(buf, x.Fields, "; ", false) + buf.WriteByte('}') + + case *ast.FuncType: + buf.WriteString("func") + writeSigExpr(buf, x) + + case *ast.InterfaceType: + buf.WriteString("interface{") + writeFieldList(buf, x.Methods, "; ", true) + buf.WriteByte('}') + + case *ast.MapType: + buf.WriteString("map[") + WriteExpr(buf, x.Key) + buf.WriteByte(']') + WriteExpr(buf, x.Value) + + case *ast.ChanType: + var s string + switch x.Dir { + case ast.SEND: + s = "chan<- " + case ast.RECV: + s = "<-chan " + default: + s = "chan " + } + buf.WriteString(s) + WriteExpr(buf, x.Value) + } +} + +func writeSigExpr(buf *bytes.Buffer, sig *ast.FuncType) { + buf.WriteByte('(') + writeFieldList(buf, sig.Params, ", ", false) + buf.WriteByte(')') + + res := sig.Results + n := res.NumFields() + if n == 0 { + // no result + return + } + + buf.WriteByte(' ') + if n == 1 && len(res.List[0].Names) == 0 { + // single unnamed result + WriteExpr(buf, res.List[0].Type) + return + } + + // multiple or named result(s) + buf.WriteByte('(') + writeFieldList(buf, res, ", ", false) + buf.WriteByte(')') +} + +func writeFieldList(buf *bytes.Buffer, fields *ast.FieldList, sep string, iface bool) { + for i, f := range fields.List { + if i > 0 { + buf.WriteString(sep) + } + + // field list names + for i, name := range f.Names { + if i > 0 { + buf.WriteString(", ") + } + buf.WriteString(name.Name) + } + + // types of interface methods consist of signatures only + if sig, _ := f.Type.(*ast.FuncType); sig != nil && iface { + writeSigExpr(buf, sig) + continue + } + + // named fields are separated with a blank from the field type + if len(f.Names) > 0 { + buf.WriteByte(' ') + } + + WriteExpr(buf, f.Type) + + // ignore tag + } +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/types/exprstring_test.go b/Godeps/_workspace/src/golang.org/x/tools/go/types/exprstring_test.go new file mode 100644 index 0000000000..cfd1472216 --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/types/exprstring_test.go @@ -0,0 +1,94 @@ +// Copyright 2013 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package types_test + +import ( + "go/parser" + "testing" + + . "golang.org/x/tools/go/types" +) + +var testExprs = []testEntry{ + // basic type literals + dup("x"), + dup("true"), + dup("42"), + dup("3.1415"), + dup("2.71828i"), + dup(`'a'`), + dup(`"foo"`), + dup("`bar`"), + + // func and composite literals + {"func(){}", "(func() literal)"}, + {"func(x int) complex128 {}", "(func(x int) complex128 literal)"}, + {"[]int{1, 2, 3}", "([]int literal)"}, + + // non-type expressions + dup("(x)"), + dup("x.f"), + dup("a[i]"), + + dup("s[:]"), + dup("s[i:]"), + dup("s[:j]"), + dup("s[i:j]"), + dup("s[:j:k]"), + dup("s[i:j:k]"), + + dup("x.(T)"), + + dup("x.([10]int)"), + dup("x.([...]int)"), + + dup("x.(struct{})"), + dup("x.(struct{x int; y, z float32; E})"), + + dup("x.(func())"), + dup("x.(func(x int))"), + dup("x.(func() int)"), + dup("x.(func(x, y int, z float32) (r int))"), + dup("x.(func(a, b, c int))"), + dup("x.(func(x ...T))"), + + dup("x.(interface{})"), + dup("x.(interface{m(); n(x int); E})"), + dup("x.(interface{m(); n(x int) T; E; F})"), + + dup("x.(map[K]V)"), + + dup("x.(chan E)"), + dup("x.(<-chan E)"), + dup("x.(chan<- chan int)"), + dup("x.(chan<- <-chan int)"), + dup("x.(<-chan chan int)"), + dup("x.(chan (<-chan int))"), + + dup("f()"), + dup("f(x)"), + dup("int(x)"), + dup("f(x, x + y)"), + dup("f(s...)"), + dup("f(a, s...)"), + + dup("*x"), + dup("&x"), + dup("x + y"), + dup("x + y << (2 * s)"), +} + +func TestExprString(t *testing.T) { + for _, test := range testExprs { + x, err := parser.ParseExpr(test.src) + if err != nil { + t.Errorf("%s: %s", test.src, err) + continue + } + if got := ExprString(x); got != test.str { + t.Errorf("%s: got %s, want %s", test.src, got, test.str) + } + } +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/types/go11.go b/Godeps/_workspace/src/golang.org/x/tools/go/types/go11.go new file mode 100644 index 0000000000..cf41cabeea --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/types/go11.go @@ -0,0 +1,17 @@ +// Copyright 2013 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// +build !go1.2 + +package types + +import "go/ast" + +func slice3(x *ast.SliceExpr) bool { + return false +} + +func sliceMax(x *ast.SliceExpr) ast.Expr { + return nil +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/types/go12.go b/Godeps/_workspace/src/golang.org/x/tools/go/types/go12.go new file mode 100644 index 0000000000..2017442154 --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/types/go12.go @@ -0,0 +1,17 @@ +// Copyright 2013 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// +build go1.2 + +package types + +import "go/ast" + +func slice3(x *ast.SliceExpr) bool { + return x.Slice3 +} + +func sliceMax(x *ast.SliceExpr) ast.Expr { + return x.Max +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/types/hilbert_test.go b/Godeps/_workspace/src/golang.org/x/tools/go/types/hilbert_test.go new file mode 100644 index 0000000000..b555721819 --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/types/hilbert_test.go @@ -0,0 +1,232 @@ +// Copyright 2013 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package types_test + +import ( + "bytes" + "flag" + "fmt" + "go/ast" + "go/parser" + "go/token" + "io/ioutil" + "testing" + + . "golang.org/x/tools/go/types" +) + +var ( + H = flag.Int("H", 5, "Hilbert matrix size") + out = flag.String("out", "", "write generated program to out") +) + +func TestHilbert(t *testing.T) { + // generate source + src := program(*H, *out) + if *out != "" { + ioutil.WriteFile(*out, src, 0666) + return + } + + // parse source + fset := token.NewFileSet() + f, err := parser.ParseFile(fset, "hilbert.go", src, 0) + if err != nil { + t.Fatal(err) + } + + // type-check file + DefPredeclaredTestFuncs() // define assert built-in + _, err = Check(f.Name.Name, fset, []*ast.File{f}) + if err != nil { + t.Fatal(err) + } +} + +func program(n int, out string) []byte { + var g gen + + g.p(`// WARNING: GENERATED FILE - DO NOT MODIFY MANUALLY! +// (To generate, in go/types directory: go test -run=Hilbert -H=%d -out=%q) + +// This program tests arbitrary precision constant arithmetic +// by generating the constant elements of a Hilbert matrix H, +// its inverse I, and the product P = H*I. The product should +// be the identity matrix. +package main + +func main() { + if !ok { + printProduct() + return + } + println("PASS") +} + +`, n, out) + g.hilbert(n) + g.inverse(n) + g.product(n) + g.verify(n) + g.printProduct(n) + g.binomials(2*n - 1) + g.factorials(2*n - 1) + + return g.Bytes() +} + +type gen struct { + bytes.Buffer +} + +func (g *gen) p(format string, args ...interface{}) { + fmt.Fprintf(&g.Buffer, format, args...) +} + +func (g *gen) hilbert(n int) { + g.p(`// Hilbert matrix, n = %d +const ( +`, n) + for i := 0; i < n; i++ { + g.p("\t") + for j := 0; j < n; j++ { + if j > 0 { + g.p(", ") + } + g.p("h%d_%d", i, j) + } + if i == 0 { + g.p(" = ") + for j := 0; j < n; j++ { + if j > 0 { + g.p(", ") + } + g.p("1.0/(iota + %d)", j+1) + } + } + g.p("\n") + } + g.p(")\n\n") +} + +func (g *gen) inverse(n int) { + g.p(`// Inverse Hilbert matrix +const ( +`) + for i := 0; i < n; i++ { + for j := 0; j < n; j++ { + s := "+" + if (i+j)&1 != 0 { + s = "-" + } + g.p("\ti%d_%d = %s%d * b%d_%d * b%d_%d * b%d_%d * b%d_%d\n", + i, j, s, i+j+1, n+i, n-j-1, n+j, n-i-1, i+j, i, i+j, i) + } + g.p("\n") + } + g.p(")\n\n") +} + +func (g *gen) product(n int) { + g.p(`// Product matrix +const ( +`) + for i := 0; i < n; i++ { + for j := 0; j < n; j++ { + g.p("\tp%d_%d = ", i, j) + for k := 0; k < n; k++ { + if k > 0 { + g.p(" + ") + } + g.p("h%d_%d*i%d_%d", i, k, k, j) + } + g.p("\n") + } + g.p("\n") + } + g.p(")\n\n") +} + +func (g *gen) verify(n int) { + g.p(`// Verify that product is the identity matrix +const ok = +`) + for i := 0; i < n; i++ { + for j := 0; j < n; j++ { + if j == 0 { + g.p("\t") + } else { + g.p(" && ") + } + v := 0 + if i == j { + v = 1 + } + g.p("p%d_%d == %d", i, j, v) + } + g.p(" &&\n") + } + g.p("\ttrue\n\n") + + // verify ok at type-check time + if *out == "" { + g.p("const _ = assert(ok)\n\n") + } +} + +func (g *gen) printProduct(n int) { + g.p("func printProduct() {\n") + for i := 0; i < n; i++ { + g.p("\tprintln(") + for j := 0; j < n; j++ { + if j > 0 { + g.p(", ") + } + g.p("p%d_%d", i, j) + } + g.p(")\n") + } + g.p("}\n\n") +} + +func (g *gen) mulRange(a, b int) { + if a > b { + g.p("1") + return + } + for i := a; i <= b; i++ { + if i > a { + g.p("*") + } + g.p("%d", i) + } +} + +func (g *gen) binomials(n int) { + g.p(`// Binomials +const ( +`) + for j := 0; j <= n; j++ { + if j > 0 { + g.p("\n") + } + for k := 0; k <= j; k++ { + g.p("\tb%d_%d = f%d / (f%d*f%d)\n", j, k, j, k, j-k) + } + } + g.p(")\n\n") +} + +func (g *gen) factorials(n int) { + g.p(`// Factorials +const ( + f0 = 1 + f1 = 1 +`) + for i := 2; i <= n; i++ { + g.p("\tf%d = f%d * %d\n", i, i-1, i) + } + g.p(")\n\n") +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/types/initorder.go b/Godeps/_workspace/src/golang.org/x/tools/go/types/initorder.go new file mode 100644 index 0000000000..0fd567b269 --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/types/initorder.go @@ -0,0 +1,222 @@ +// Copyright 2014 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package types + +import ( + "container/heap" + "fmt" +) + +// initOrder computes the Info.InitOrder for package variables. +func (check *Checker) initOrder() { + // An InitOrder may already have been computed if a package is + // built from several calls to (*Checker).Files. Clear it. + check.Info.InitOrder = check.Info.InitOrder[:0] + + // compute the object dependency graph and + // initialize a priority queue with the list + // of graph nodes + pq := nodeQueue(dependencyGraph(check.objMap)) + heap.Init(&pq) + + const debug = false + if debug { + fmt.Printf("package %s: object dependency graph\n", check.pkg.Name()) + for _, n := range pq { + for _, o := range n.out { + fmt.Printf("\t%s -> %s\n", n.obj.Name(), o.obj.Name()) + } + } + fmt.Println() + fmt.Printf("package %s: initialization order\n", check.pkg.Name()) + } + + // determine initialization order by removing the highest priority node + // (the one with the fewest dependencies) and its edges from the graph, + // repeatedly, until there are no nodes left. + // In a valid Go program, those nodes always have zero dependencies (after + // removing all incoming dependencies), otherwise there are initialization + // cycles. + mark := 0 + emitted := make(map[*declInfo]bool) + for len(pq) > 0 { + // get the next node + n := heap.Pop(&pq).(*objNode) + + // if n still depends on other nodes, we have a cycle + if n.in > 0 { + mark++ // mark nodes using a different value each time + cycle := findPath(n, n, mark) + if i := valIndex(cycle); i >= 0 { + check.reportCycle(cycle, i) + } + // ok to continue, but the variable initialization order + // will be incorrect at this point since it assumes no + // cycle errors + } + + // reduce dependency count of all dependent nodes + // and update priority queue + for _, out := range n.out { + out.in-- + heap.Fix(&pq, out.index) + } + + // record the init order for variables with initializers only + v, _ := n.obj.(*Var) + info := check.objMap[v] + if v == nil || !info.hasInitializer() { + continue + } + + // n:1 variable declarations such as: a, b = f() + // introduce a node for each lhs variable (here: a, b); + // but they all have the same initializer - emit only + // one, for the first variable seen + if emitted[info] { + continue // initializer already emitted, if any + } + emitted[info] = true + + infoLhs := info.lhs // possibly nil (see declInfo.lhs field comment) + if infoLhs == nil { + infoLhs = []*Var{v} + } + init := &Initializer{infoLhs, info.init} + check.Info.InitOrder = append(check.Info.InitOrder, init) + + if debug { + fmt.Printf("\t%s\n", init) + } + } + + if debug { + fmt.Println() + } +} + +// findPath returns the (reversed) list of nodes z, ... c, b, a, +// such that there is a path (list of edges) from a to z. +// If there is no such path, the result is nil. +// Nodes marked with the value mark are considered "visited"; +// unvisited nodes are marked during the graph search. +func findPath(a, z *objNode, mark int) []*objNode { + if a.mark == mark { + return nil // node already seen + } + a.mark = mark + + for _, n := range a.out { + if n == z { + return []*objNode{z} + } + if P := findPath(n, z, mark); P != nil { + return append(P, n) + } + } + + return nil +} + +// valIndex returns the index of the first constant or variable in a, +// if any; or a value < 0. +func valIndex(a []*objNode) int { + for i, n := range a { + switch n.obj.(type) { + case *Const, *Var: + return i + } + } + return -1 +} + +// reportCycle reports an error for the cycle starting at i. +func (check *Checker) reportCycle(cycle []*objNode, i int) { + obj := cycle[i].obj + check.errorf(obj.Pos(), "initialization cycle for %s", obj.Name()) + // print cycle + for _ = range cycle { + check.errorf(obj.Pos(), "\t%s refers to", obj.Name()) // secondary error, \t indented + i++ + if i >= len(cycle) { + i = 0 + } + obj = cycle[i].obj + } + check.errorf(obj.Pos(), "\t%s", obj.Name()) +} + +// An objNode represents a node in the object dependency graph. +// Each node b in a.out represents an edge a->b indicating that +// b depends on a. +// Nodes may be marked for cycle detection. A node n is marked +// if n.mark corresponds to the current mark value. +type objNode struct { + obj Object // object represented by this node + in int // number of nodes this node depends on + out []*objNode // list of nodes that depend on this node + index int // node index in list of nodes + mark int // for cycle detection +} + +// dependencyGraph computes the transposed object dependency graph +// from the given objMap. The transposed graph is returned as a list +// of nodes; an edge d->n indicates that node n depends on node d. +func dependencyGraph(objMap map[Object]*declInfo) []*objNode { + // M maps each object to its corresponding node + M := make(map[Object]*objNode, len(objMap)) + for obj := range objMap { + M[obj] = &objNode{obj: obj} + } + + // G is the graph of nodes n + G := make([]*objNode, len(M)) + i := 0 + for obj, n := range M { + deps := objMap[obj].deps + n.in = len(deps) + for d := range deps { + d := M[d] // node n depends on node d + d.out = append(d.out, n) // add edge d->n + } + + G[i] = n + n.index = i + i++ + } + + return G +} + +// nodeQueue implements the container/heap interface; +// a nodeQueue may be used as a priority queue. +type nodeQueue []*objNode + +func (a nodeQueue) Len() int { return len(a) } + +func (a nodeQueue) Swap(i, j int) { + x, y := a[i], a[j] + a[i], a[j] = y, x + x.index, y.index = j, i +} + +func (a nodeQueue) Less(i, j int) bool { + x, y := a[i], a[j] + // nodes are prioritized by number of incoming dependencies (1st key) + // and source order (2nd key) + return x.in < y.in || x.in == y.in && x.obj.order() < y.obj.order() +} + +func (a *nodeQueue) Push(x interface{}) { + panic("unreachable") +} + +func (a *nodeQueue) Pop() interface{} { + n := len(*a) + x := (*a)[n-1] + x.index = -1 // for safety + *a = (*a)[:n-1] + return x +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/types/issues_test.go b/Godeps/_workspace/src/golang.org/x/tools/go/types/issues_test.go new file mode 100644 index 0000000000..04d8b37192 --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/types/issues_test.go @@ -0,0 +1,205 @@ +// Copyright 2013 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// This file implements tests for various issues. + +package types_test + +import ( + "fmt" + "go/ast" + "go/parser" + "sort" + "strings" + "testing" + + _ "golang.org/x/tools/go/gcimporter" + . "golang.org/x/tools/go/types" +) + +func TestIssue5770(t *testing.T) { + src := `package p; type S struct{T}` + f, err := parser.ParseFile(fset, "", src, 0) + if err != nil { + t.Fatal(err) + } + + _, err = Check(f.Name.Name, fset, []*ast.File{f}) // do not crash + want := "undeclared name: T" + if err == nil || !strings.Contains(err.Error(), want) { + t.Errorf("got: %v; want: %s", err, want) + } +} + +func TestIssue5849(t *testing.T) { + src := ` +package p +var ( + s uint + _ = uint8(8) + _ = uint16(16) << s + _ = uint32(32 << s) + _ = uint64(64 << s + s) + _ = (interface{})("foo") + _ = (interface{})(nil) +)` + f, err := parser.ParseFile(fset, "", src, 0) + if err != nil { + t.Fatal(err) + } + + var conf Config + types := make(map[ast.Expr]TypeAndValue) + _, err = conf.Check(f.Name.Name, fset, []*ast.File{f}, &Info{Types: types}) + if err != nil { + t.Fatal(err) + } + + for x, tv := range types { + var want Type + switch x := x.(type) { + case *ast.BasicLit: + switch x.Value { + case `8`: + want = Typ[Uint8] + case `16`: + want = Typ[Uint16] + case `32`: + want = Typ[Uint32] + case `64`: + want = Typ[Uint] // because of "+ s", s is of type uint + case `"foo"`: + want = Typ[String] + } + case *ast.Ident: + if x.Name == "nil" { + want = Typ[UntypedNil] + } + } + if want != nil && !Identical(tv.Type, want) { + t.Errorf("got %s; want %s", tv.Type, want) + } + } +} + +func TestIssue6413(t *testing.T) { + src := ` +package p +func f() int { + defer f() + go f() + return 0 +} +` + f, err := parser.ParseFile(fset, "", src, 0) + if err != nil { + t.Fatal(err) + } + + var conf Config + types := make(map[ast.Expr]TypeAndValue) + _, err = conf.Check(f.Name.Name, fset, []*ast.File{f}, &Info{Types: types}) + if err != nil { + t.Fatal(err) + } + + want := Typ[Int] + n := 0 + for x, tv := range types { + if _, ok := x.(*ast.CallExpr); ok { + if tv.Type != want { + t.Errorf("%s: got %s; want %s", fset.Position(x.Pos()), tv.Type, want) + } + n++ + } + } + + if n != 2 { + t.Errorf("got %d CallExprs; want 2", n) + } +} + +func TestIssue7245(t *testing.T) { + src := ` +package p +func (T) m() (res bool) { return } +type T struct{} // receiver type after method declaration +` + f, err := parser.ParseFile(fset, "", src, 0) + if err != nil { + t.Fatal(err) + } + + var conf Config + defs := make(map[*ast.Ident]Object) + _, err = conf.Check(f.Name.Name, fset, []*ast.File{f}, &Info{Defs: defs}) + if err != nil { + t.Fatal(err) + } + + m := f.Decls[0].(*ast.FuncDecl) + res1 := defs[m.Name].(*Func).Type().(*Signature).Results().At(0) + res2 := defs[m.Type.Results.List[0].Names[0]].(*Var) + + if res1 != res2 { + t.Errorf("got %s (%p) != %s (%p)", res1, res2, res1, res2) + } +} + +// This tests that uses of existing vars on the LHS of an assignment +// are Uses, not Defs; and also that the (illegal) use of a non-var on +// the LHS of an assignment is a Use nonetheless. +func TestIssue7827(t *testing.T) { + const src = ` +package p +func _() { + const w = 1 // defs w + x, y := 2, 3 // defs x, y + w, x, z := 4, 5, 6 // uses w, x, defs z; error: cannot assign to w + _, _, _ = x, y, z // uses x, y, z +} +` + const want = `L3 defs func p._() +L4 defs const w untyped int +L5 defs var x int +L5 defs var y int +L6 defs var z int +L6 uses const w untyped int +L6 uses var x int +L7 uses var x int +L7 uses var y int +L7 uses var z int` + + f, err := parser.ParseFile(fset, "", src, 0) + if err != nil { + t.Fatal(err) + } + + // don't abort at the first error + conf := Config{Error: func(err error) { t.Log(err) }} + defs := make(map[*ast.Ident]Object) + uses := make(map[*ast.Ident]Object) + _, err = conf.Check(f.Name.Name, fset, []*ast.File{f}, &Info{Defs: defs, Uses: uses}) + if s := fmt.Sprint(err); !strings.HasSuffix(s, "cannot assign to w") { + t.Errorf("Check: unexpected error: %s", s) + } + + var facts []string + for id, obj := range defs { + if obj != nil { + fact := fmt.Sprintf("L%d defs %s", fset.Position(id.Pos()).Line, obj) + facts = append(facts, fact) + } + } + for id, obj := range uses { + fact := fmt.Sprintf("L%d uses %s", fset.Position(id.Pos()).Line, obj) + facts = append(facts, fact) + } + sort.Strings(facts) + + got := strings.Join(facts, "\n") + if got != want { + t.Errorf("Unexpected defs/uses\ngot:\n%s\nwant:\n%s", got, want) + } +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/types/labels.go b/Godeps/_workspace/src/golang.org/x/tools/go/types/labels.go new file mode 100644 index 0000000000..7364d4dbe6 --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/types/labels.go @@ -0,0 +1,268 @@ +// Copyright 2013 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package types + +import ( + "go/ast" + "go/token" +) + +// labels checks correct label use in body. +func (check *Checker) labels(body *ast.BlockStmt) { + // set of all labels in this body + all := NewScope(nil, body.Pos(), body.End(), "label") + + fwdJumps := check.blockBranches(all, nil, nil, body.List) + + // If there are any forward jumps left, no label was found for + // the corresponding goto statements. Either those labels were + // never defined, or they are inside blocks and not reachable + // for the respective gotos. + for _, jmp := range fwdJumps { + var msg string + name := jmp.Label.Name + if alt := all.Lookup(name); alt != nil { + msg = "goto %s jumps into block" + alt.(*Label).used = true // avoid another error + } else { + msg = "label %s not declared" + } + check.errorf(jmp.Label.Pos(), msg, name) + } + + // spec: "It is illegal to define a label that is never used." + for _, obj := range all.elems { + if lbl := obj.(*Label); !lbl.used { + check.softErrorf(lbl.pos, "label %s declared but not used", lbl.name) + } + } +} + +// A block tracks label declarations in a block and its enclosing blocks. +type block struct { + parent *block // enclosing block + lstmt *ast.LabeledStmt // labeled statement to which this block belongs, or nil + labels map[string]*ast.LabeledStmt // allocated lazily +} + +// insert records a new label declaration for the current block. +// The label must not have been declared before in any block. +func (b *block) insert(s *ast.LabeledStmt) { + name := s.Label.Name + if debug { + assert(b.gotoTarget(name) == nil) + } + labels := b.labels + if labels == nil { + labels = make(map[string]*ast.LabeledStmt) + b.labels = labels + } + labels[name] = s +} + +// gotoTarget returns the labeled statement in the current +// or an enclosing block with the given label name, or nil. +func (b *block) gotoTarget(name string) *ast.LabeledStmt { + for s := b; s != nil; s = s.parent { + if t := s.labels[name]; t != nil { + return t + } + } + return nil +} + +// enclosingTarget returns the innermost enclosing labeled +// statement with the given label name, or nil. +func (b *block) enclosingTarget(name string) *ast.LabeledStmt { + for s := b; s != nil; s = s.parent { + if t := s.lstmt; t != nil && t.Label.Name == name { + return t + } + } + return nil +} + +// blockBranches processes a block's statement list and returns the set of outgoing forward jumps. +// all is the scope of all declared labels, parent the set of labels declared in the immediately +// enclosing block, and lstmt is the labeled statement this block is associated with (or nil). +func (check *Checker) blockBranches(all *Scope, parent *block, lstmt *ast.LabeledStmt, list []ast.Stmt) []*ast.BranchStmt { + b := &block{parent: parent, lstmt: lstmt} + + var ( + varDeclPos token.Pos + fwdJumps, badJumps []*ast.BranchStmt + ) + + // All forward jumps jumping over a variable declaration are possibly + // invalid (they may still jump out of the block and be ok). + // recordVarDecl records them for the given position. + recordVarDecl := func(pos token.Pos) { + varDeclPos = pos + badJumps = append(badJumps[:0], fwdJumps...) // copy fwdJumps to badJumps + } + + jumpsOverVarDecl := func(jmp *ast.BranchStmt) bool { + if varDeclPos.IsValid() { + for _, bad := range badJumps { + if jmp == bad { + return true + } + } + } + return false + } + + blockBranches := func(lstmt *ast.LabeledStmt, list []ast.Stmt) { + // Unresolved forward jumps inside the nested block + // become forward jumps in the current block. + fwdJumps = append(fwdJumps, check.blockBranches(all, b, lstmt, list)...) + } + + var stmtBranches func(ast.Stmt) + stmtBranches = func(s ast.Stmt) { + switch s := s.(type) { + case *ast.DeclStmt: + if d, _ := s.Decl.(*ast.GenDecl); d != nil && d.Tok == token.VAR { + recordVarDecl(d.Pos()) + } + + case *ast.LabeledStmt: + // declare non-blank label + if name := s.Label.Name; name != "_" { + lbl := NewLabel(s.Label.Pos(), check.pkg, name) + if alt := all.Insert(lbl); alt != nil { + check.softErrorf(lbl.pos, "label %s already declared", name) + check.reportAltDecl(alt) + // ok to continue + } else { + b.insert(s) + check.recordDef(s.Label, lbl) + } + // resolve matching forward jumps and remove them from fwdJumps + i := 0 + for _, jmp := range fwdJumps { + if jmp.Label.Name == name { + // match + lbl.used = true + check.recordUse(jmp.Label, lbl) + if jumpsOverVarDecl(jmp) { + check.softErrorf( + jmp.Label.Pos(), + "goto %s jumps over variable declaration at line %d", + name, + check.fset.Position(varDeclPos).Line, + ) + // ok to continue + } + } else { + // no match - record new forward jump + fwdJumps[i] = jmp + i++ + } + } + fwdJumps = fwdJumps[:i] + lstmt = s + } + stmtBranches(s.Stmt) + + case *ast.BranchStmt: + if s.Label == nil { + return // checked in 1st pass (check.stmt) + } + + // determine and validate target + name := s.Label.Name + switch s.Tok { + case token.BREAK: + // spec: "If there is a label, it must be that of an enclosing + // "for", "switch", or "select" statement, and that is the one + // whose execution terminates." + valid := false + if t := b.enclosingTarget(name); t != nil { + switch t.Stmt.(type) { + case *ast.SwitchStmt, *ast.TypeSwitchStmt, *ast.SelectStmt, *ast.ForStmt, *ast.RangeStmt: + valid = true + } + } + if !valid { + check.errorf(s.Label.Pos(), "invalid break label %s", name) + return + } + + case token.CONTINUE: + // spec: "If there is a label, it must be that of an enclosing + // "for" statement, and that is the one whose execution advances." + valid := false + if t := b.enclosingTarget(name); t != nil { + switch t.Stmt.(type) { + case *ast.ForStmt, *ast.RangeStmt: + valid = true + } + } + if !valid { + check.errorf(s.Label.Pos(), "invalid continue label %s", name) + return + } + + case token.GOTO: + if b.gotoTarget(name) == nil { + // label may be declared later - add branch to forward jumps + fwdJumps = append(fwdJumps, s) + return + } + + default: + check.invalidAST(s.Pos(), "branch statement: %s %s", s.Tok, name) + return + } + + // record label use + obj := all.Lookup(name) + obj.(*Label).used = true + check.recordUse(s.Label, obj) + + case *ast.AssignStmt: + if s.Tok == token.DEFINE { + recordVarDecl(s.Pos()) + } + + case *ast.BlockStmt: + blockBranches(lstmt, s.List) + + case *ast.IfStmt: + stmtBranches(s.Body) + if s.Else != nil { + stmtBranches(s.Else) + } + + case *ast.CaseClause: + blockBranches(nil, s.Body) + + case *ast.SwitchStmt: + stmtBranches(s.Body) + + case *ast.TypeSwitchStmt: + stmtBranches(s.Body) + + case *ast.CommClause: + blockBranches(nil, s.Body) + + case *ast.SelectStmt: + stmtBranches(s.Body) + + case *ast.ForStmt: + stmtBranches(s.Body) + + case *ast.RangeStmt: + stmtBranches(s.Body) + } + } + + for _, s := range list { + stmtBranches(s) + } + + return fwdJumps +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/types/lookup.go b/Godeps/_workspace/src/golang.org/x/tools/go/types/lookup.go new file mode 100644 index 0000000000..3caca5519b --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/types/lookup.go @@ -0,0 +1,341 @@ +// Copyright 2013 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// This file implements various field and method lookup functions. + +package types + +// LookupFieldOrMethod looks up a field or method with given package and name +// in T and returns the corresponding *Var or *Func, an index sequence, and a +// bool indicating if there were any pointer indirections on the path to the +// field or method. If addressable is set, T is the type of an addressable +// variable (only matters for method lookups). +// +// The last index entry is the field or method index in the (possibly embedded) +// type where the entry was found, either: +// +// 1) the list of declared methods of a named type; or +// 2) the list of all methods (method set) of an interface type; or +// 3) the list of fields of a struct type. +// +// The earlier index entries are the indices of the anonymous struct fields +// traversed to get to the found entry, starting at depth 0. +// +// If no entry is found, a nil object is returned. In this case, the returned +// index and indirect values have the following meaning: +// +// - If index != nil, the index sequence points to an ambiguous entry +// (the same name appeared more than once at the same embedding level). +// +// - If indirect is set, a method with a pointer receiver type was found +// but there was no pointer on the path from the actual receiver type to +// the method's formal receiver base type, nor was the receiver addressable. +// +func LookupFieldOrMethod(T Type, addressable bool, pkg *Package, name string) (obj Object, index []int, indirect bool) { + // Methods cannot be associated to a named pointer type + // (spec: "The type denoted by T is called the receiver base type; + // it must not be a pointer or interface type and it must be declared + // in the same package as the method."). + // Thus, if we have a named pointer type, proceed with the underlying + // pointer type but discard the result if it is a method since we would + // not have found it for T (see also issue 8590). + if t, _ := T.(*Named); t != nil { + if p, _ := t.underlying.(*Pointer); p != nil { + obj, index, indirect = lookupFieldOrMethod(p, false, pkg, name) + if _, ok := obj.(*Func); ok { + return nil, nil, false + } + return + } + } + + return lookupFieldOrMethod(T, addressable, pkg, name) +} + +// TODO(gri) The named type consolidation and seen maps below must be +// indexed by unique keys for a given type. Verify that named +// types always have only one representation (even when imported +// indirectly via different packages.) + +func lookupFieldOrMethod(T Type, addressable bool, pkg *Package, name string) (obj Object, index []int, indirect bool) { + // WARNING: The code in this function is extremely subtle - do not modify casually! + // This function and NewMethodSet should be kept in sync. + + if name == "_" { + return // blank fields/methods are never found + } + + typ, isPtr := deref(T) + named, _ := typ.(*Named) + + // *typ where typ is an interface has no methods. + if isPtr { + utyp := typ + if named != nil { + utyp = named.underlying + } + if _, ok := utyp.(*Interface); ok { + return + } + } + + // Start with typ as single entry at shallowest depth. + // If typ is not a named type, insert a nil type instead. + current := []embeddedType{{named, nil, isPtr, false}} + + // named types that we have seen already, allocated lazily + var seen map[*Named]bool + + // search current depth + for len(current) > 0 { + var next []embeddedType // embedded types found at current depth + + // look for (pkg, name) in all types at current depth + for _, e := range current { + // The very first time only, e.typ may be nil. + // In this case, we don't have a named type and + // we simply continue with the underlying type. + if e.typ != nil { + if seen[e.typ] { + // We have seen this type before, at a more shallow depth + // (note that multiples of this type at the current depth + // were consolidated before). The type at that depth shadows + // this same type at the current depth, so we can ignore + // this one. + continue + } + if seen == nil { + seen = make(map[*Named]bool) + } + seen[e.typ] = true + + // look for a matching attached method + if i, m := lookupMethod(e.typ.methods, pkg, name); m != nil { + // potential match + assert(m.typ != nil) + index = concat(e.index, i) + if obj != nil || e.multiples { + return nil, index, false // collision + } + obj = m + indirect = e.indirect + continue // we can't have a matching field or interface method + } + + // continue with underlying type + typ = e.typ.underlying + } + + switch t := typ.(type) { + case *Struct: + // look for a matching field and collect embedded types + for i, f := range t.fields { + if f.sameId(pkg, name) { + assert(f.typ != nil) + index = concat(e.index, i) + if obj != nil || e.multiples { + return nil, index, false // collision + } + obj = f + indirect = e.indirect + continue // we can't have a matching interface method + } + // Collect embedded struct fields for searching the next + // lower depth, but only if we have not seen a match yet + // (if we have a match it is either the desired field or + // we have a name collision on the same depth; in either + // case we don't need to look further). + // Embedded fields are always of the form T or *T where + // T is a named type. If e.typ appeared multiple times at + // this depth, f.typ appears multiple times at the next + // depth. + if obj == nil && f.anonymous { + // Ignore embedded basic types - only user-defined + // named types can have methods or struct fields. + typ, isPtr := deref(f.typ) + if t, _ := typ.(*Named); t != nil { + next = append(next, embeddedType{t, concat(e.index, i), e.indirect || isPtr, e.multiples}) + } + } + } + + case *Interface: + // look for a matching method + // TODO(gri) t.allMethods is sorted - use binary search + if i, m := lookupMethod(t.allMethods, pkg, name); m != nil { + assert(m.typ != nil) + index = concat(e.index, i) + if obj != nil || e.multiples { + return nil, index, false // collision + } + obj = m + indirect = e.indirect + } + } + } + + if obj != nil { + // found a potential match + // spec: "A method call x.m() is valid if the method set of (the type of) x + // contains m and the argument list can be assigned to the parameter + // list of m. If x is addressable and &x's method set contains m, x.m() + // is shorthand for (&x).m()". + if f, _ := obj.(*Func); f != nil && ptrRecv(f) && !indirect && !addressable { + return nil, nil, true // pointer/addressable receiver required + } + return + } + + current = consolidateMultiples(next) + } + + return nil, nil, false // not found +} + +// embeddedType represents an embedded named type +type embeddedType struct { + typ *Named // nil means use the outer typ variable instead + index []int // embedded field indices, starting with index at depth 0 + indirect bool // if set, there was a pointer indirection on the path to this field + multiples bool // if set, typ appears multiple times at this depth +} + +// consolidateMultiples collects multiple list entries with the same type +// into a single entry marked as containing multiples. The result is the +// consolidated list. +func consolidateMultiples(list []embeddedType) []embeddedType { + if len(list) <= 1 { + return list // at most one entry - nothing to do + } + + n := 0 // number of entries w/ unique type + prev := make(map[*Named]int) // index at which type was previously seen + for _, e := range list { + if i, found := prev[e.typ]; found { + list[i].multiples = true + // ignore this entry + } else { + prev[e.typ] = n + list[n] = e + n++ + } + } + return list[:n] +} + +// MissingMethod returns (nil, false) if V implements T, otherwise it +// returns a missing method required by T and whether it is missing or +// just has the wrong type. +// +// For non-interface types V, or if static is set, V implements T if all +// methods of T are present in V. Otherwise (V is an interface and static +// is not set), MissingMethod only checks that methods of T which are also +// present in V have matching types (e.g., for a type assertion x.(T) where +// x is of interface type V). +// +func MissingMethod(V Type, T *Interface, static bool) (method *Func, wrongType bool) { + // fast path for common case + if T.Empty() { + return + } + + // TODO(gri) Consider using method sets here. Might be more efficient. + + if ityp, _ := V.Underlying().(*Interface); ityp != nil { + // TODO(gri) allMethods is sorted - can do this more efficiently + for _, m := range T.allMethods { + _, obj := lookupMethod(ityp.allMethods, m.pkg, m.name) + switch { + case obj == nil: + if static { + return m, false + } + case !Identical(obj.Type(), m.typ): + return m, true + } + } + return + } + + // A concrete type implements T if it implements all methods of T. + for _, m := range T.allMethods { + obj, _, _ := lookupFieldOrMethod(V, false, m.pkg, m.name) + + f, _ := obj.(*Func) + if f == nil { + return m, false + } + + if !Identical(f.typ, m.typ) { + return m, true + } + } + + return +} + +// assertableTo reports whether a value of type V can be asserted to have type T. +// It returns (nil, false) as affirmative answer. Otherwise it returns a missing +// method required by V and whether it is missing or just has the wrong type. +func assertableTo(V *Interface, T Type) (method *Func, wrongType bool) { + // no static check is required if T is an interface + // spec: "If T is an interface type, x.(T) asserts that the + // dynamic type of x implements the interface T." + if _, ok := T.Underlying().(*Interface); ok && !strict { + return + } + return MissingMethod(T, V, false) +} + +// deref dereferences typ if it is a *Pointer and returns its base and true. +// Otherwise it returns (typ, false). +func deref(typ Type) (Type, bool) { + if p, _ := typ.(*Pointer); p != nil { + return p.base, true + } + return typ, false +} + +// derefStructPtr dereferences typ if it is a (named or unnamed) pointer to a +// (named or unnamed) struct and returns its base. Otherwise it returns typ. +func derefStructPtr(typ Type) Type { + if p, _ := typ.Underlying().(*Pointer); p != nil { + if _, ok := p.base.Underlying().(*Struct); ok { + return p.base + } + } + return typ +} + +// concat returns the result of concatenating list and i. +// The result does not share its underlying array with list. +func concat(list []int, i int) []int { + var t []int + t = append(t, list...) + return append(t, i) +} + +// fieldIndex returns the index for the field with matching package and name, or a value < 0. +func fieldIndex(fields []*Var, pkg *Package, name string) int { + if name != "_" { + for i, f := range fields { + if f.sameId(pkg, name) { + return i + } + } + } + return -1 +} + +// lookupMethod returns the index of and method with matching package and name, or (-1, nil). +func lookupMethod(methods []*Func, pkg *Package, name string) (int, *Func) { + if name != "_" { + for i, m := range methods { + if m.sameId(pkg, name) { + return i, m + } + } + } + return -1, nil +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/types/methodset.go b/Godeps/_workspace/src/golang.org/x/tools/go/types/methodset.go new file mode 100644 index 0000000000..8aff6f9ba4 --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/types/methodset.go @@ -0,0 +1,271 @@ +// Copyright 2013 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// This file implements method sets. + +package types + +import ( + "bytes" + "fmt" + "sort" +) + +// A MethodSet is an ordered set of concrete or abstract (interface) methods; +// a method is a MethodVal selection, and they are ordered by ascending m.Obj().Id(). +// The zero value for a MethodSet is a ready-to-use empty method set. +type MethodSet struct { + list []*Selection +} + +func (s *MethodSet) String() string { + if s.Len() == 0 { + return "MethodSet {}" + } + + var buf bytes.Buffer + fmt.Fprintln(&buf, "MethodSet {") + for _, f := range s.list { + fmt.Fprintf(&buf, "\t%s\n", f) + } + fmt.Fprintln(&buf, "}") + return buf.String() +} + +// Len returns the number of methods in s. +func (s *MethodSet) Len() int { return len(s.list) } + +// At returns the i'th method in s for 0 <= i < s.Len(). +func (s *MethodSet) At(i int) *Selection { return s.list[i] } + +// Lookup returns the method with matching package and name, or nil if not found. +func (s *MethodSet) Lookup(pkg *Package, name string) *Selection { + if s.Len() == 0 { + return nil + } + + key := Id(pkg, name) + i := sort.Search(len(s.list), func(i int) bool { + m := s.list[i] + return m.obj.Id() >= key + }) + if i < len(s.list) { + m := s.list[i] + if m.obj.Id() == key { + return m + } + } + return nil +} + +// Shared empty method set. +var emptyMethodSet MethodSet + +// NewMethodSet returns the method set for the given type T. It +// always returns a non-nil method set, even if it is empty. +// +// A MethodSetCache handles repeat queries more efficiently. +// +func NewMethodSet(T Type) *MethodSet { + // WARNING: The code in this function is extremely subtle - do not modify casually! + // This function and lookupFieldOrMethod should be kept in sync. + + // method set up to the current depth, allocated lazily + var base methodSet + + typ, isPtr := deref(T) + named, _ := typ.(*Named) + + // *typ where typ is an interface has no methods. + if isPtr { + utyp := typ + if named != nil { + utyp = named.underlying + } + if _, ok := utyp.(*Interface); ok { + return &emptyMethodSet + } + } + + // Start with typ as single entry at shallowest depth. + // If typ is not a named type, insert a nil type instead. + current := []embeddedType{{named, nil, isPtr, false}} + + // named types that we have seen already, allocated lazily + var seen map[*Named]bool + + // collect methods at current depth + for len(current) > 0 { + var next []embeddedType // embedded types found at current depth + + // field and method sets at current depth, allocated lazily + var fset fieldSet + var mset methodSet + + for _, e := range current { + // The very first time only, e.typ may be nil. + // In this case, we don't have a named type and + // we simply continue with the underlying type. + if e.typ != nil { + if seen[e.typ] { + // We have seen this type before, at a more shallow depth + // (note that multiples of this type at the current depth + // were consolidated before). The type at that depth shadows + // this same type at the current depth, so we can ignore + // this one. + continue + } + if seen == nil { + seen = make(map[*Named]bool) + } + seen[e.typ] = true + + mset = mset.add(e.typ.methods, e.index, e.indirect, e.multiples) + + // continue with underlying type + typ = e.typ.underlying + } + + switch t := typ.(type) { + case *Struct: + for i, f := range t.fields { + fset = fset.add(f, e.multiples) + + // Embedded fields are always of the form T or *T where + // T is a named type. If typ appeared multiple times at + // this depth, f.Type appears multiple times at the next + // depth. + if f.anonymous { + // Ignore embedded basic types - only user-defined + // named types can have methods or struct fields. + typ, isPtr := deref(f.typ) + if t, _ := typ.(*Named); t != nil { + next = append(next, embeddedType{t, concat(e.index, i), e.indirect || isPtr, e.multiples}) + } + } + } + + case *Interface: + mset = mset.add(t.allMethods, e.index, true, e.multiples) + } + } + + // Add methods and collisions at this depth to base if no entries with matching + // names exist already. + for k, m := range mset { + if _, found := base[k]; !found { + // Fields collide with methods of the same name at this depth. + if _, found := fset[k]; found { + m = nil // collision + } + if base == nil { + base = make(methodSet) + } + base[k] = m + } + } + + // Multiple fields with matching names collide at this depth and shadow all + // entries further down; add them as collisions to base if no entries with + // matching names exist already. + for k, f := range fset { + if f == nil { + if _, found := base[k]; !found { + if base == nil { + base = make(methodSet) + } + base[k] = nil // collision + } + } + } + + current = consolidateMultiples(next) + } + + if len(base) == 0 { + return &emptyMethodSet + } + + // collect methods + var list []*Selection + for _, m := range base { + if m != nil { + m.recv = T + list = append(list, m) + } + } + sort.Sort(byUniqueName(list)) + return &MethodSet{list} +} + +// A fieldSet is a set of fields and name collisions. +// A collision indicates that multiple fields with the +// same unique id appeared. +type fieldSet map[string]*Var // a nil entry indicates a name collision + +// Add adds field f to the field set s. +// If multiples is set, f appears multiple times +// and is treated as a collision. +func (s fieldSet) add(f *Var, multiples bool) fieldSet { + if s == nil { + s = make(fieldSet) + } + key := f.Id() + // if f is not in the set, add it + if !multiples { + if _, found := s[key]; !found { + s[key] = f + return s + } + } + s[key] = nil // collision + return s +} + +// A methodSet is a set of methods and name collisions. +// A collision indicates that multiple methods with the +// same unique id appeared. +type methodSet map[string]*Selection // a nil entry indicates a name collision + +// Add adds all functions in list to the method set s. +// If multiples is set, every function in list appears multiple times +// and is treated as a collision. +func (s methodSet) add(list []*Func, index []int, indirect bool, multiples bool) methodSet { + if len(list) == 0 { + return s + } + if s == nil { + s = make(methodSet) + } + for i, f := range list { + key := f.Id() + // if f is not in the set, add it + if !multiples { + // TODO(gri) A found method may not be added because it's not in the method set + // (!indirect && ptrRecv(f)). A 2nd method on the same level may be in the method + // set and may not collide with the first one, thus leading to a false positive. + // Is that possible? Investigate. + if _, found := s[key]; !found && (indirect || !ptrRecv(f)) { + s[key] = &Selection{MethodVal, nil, f, concat(index, i), indirect} + continue + } + } + s[key] = nil // collision + } + return s +} + +// ptrRecv reports whether the receiver is of the form *T. +// The receiver must exist. +func ptrRecv(f *Func) bool { + _, isPtr := deref(f.typ.(*Signature).recv.typ) + return isPtr +} + +// byUniqueName function lists can be sorted by their unique names. +type byUniqueName []*Selection + +func (a byUniqueName) Len() int { return len(a) } +func (a byUniqueName) Less(i, j int) bool { return a[i].obj.Id() < a[j].obj.Id() } +func (a byUniqueName) Swap(i, j int) { a[i], a[j] = a[j], a[i] } diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/types/object.go b/Godeps/_workspace/src/golang.org/x/tools/go/types/object.go new file mode 100644 index 0000000000..a9b6c43f5a --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/types/object.go @@ -0,0 +1,361 @@ +// Copyright 2013 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package types + +import ( + "bytes" + "fmt" + "go/ast" + "go/token" + + "golang.org/x/tools/go/exact" +) + +// TODO(gri) Document factory, accessor methods, and fields. General clean-up. + +// An Object describes a named language entity such as a package, +// constant, type, variable, function (incl. methods), or label. +// All objects implement the Object interface. +// +type Object interface { + Parent() *Scope // scope in which this object is declared + Pos() token.Pos // position of object identifier in declaration + Pkg() *Package // nil for objects in the Universe scope and labels + Name() string // package local object name + Type() Type // object type + Exported() bool // reports whether the name starts with a capital letter + Id() string // object id (see Id below) + + // String returns a human-readable string of the object. + String() string + + // order reflects a package-level object's source order: if object + // a is before object b in the source, then a.order() < b.order(). + // order returns a value > 0 for package-level objects; it returns + // 0 for all other objects (including objects in file scopes). + order() uint32 + + // setOrder sets the order number of the object. It must be > 0. + setOrder(uint32) + + // setParent sets the parent scope of the object. + setParent(*Scope) + + // sameId reports whether obj.Id() and Id(pkg, name) are the same. + sameId(pkg *Package, name string) bool + + // scopePos returns the start position of the scope of this Object + scopePos() token.Pos + + // setScopePos sets the start position of the scope for this Object. + setScopePos(pos token.Pos) +} + +// Id returns name if it is exported, otherwise it +// returns the name qualified with the package path. +func Id(pkg *Package, name string) string { + if ast.IsExported(name) { + return name + } + // unexported names need the package path for differentiation + // (if there's no package, make sure we don't start with '.' + // as that may change the order of methods between a setup + // inside a package and outside a package - which breaks some + // tests) + path := "_" + // TODO(gri): shouldn't !ast.IsExported(name) => pkg != nil be an precondition? + // if pkg == nil { + // panic("nil package in lookup of unexported name") + // } + if pkg != nil { + path = pkg.path + if path == "" { + path = "_" + } + } + return path + "." + name +} + +// An object implements the common parts of an Object. +type object struct { + parent *Scope + pos token.Pos + pkg *Package + name string + typ Type + order_ uint32 + scopePos_ token.Pos +} + +func (obj *object) Parent() *Scope { return obj.parent } +func (obj *object) Pos() token.Pos { return obj.pos } +func (obj *object) Pkg() *Package { return obj.pkg } +func (obj *object) Name() string { return obj.name } +func (obj *object) Type() Type { return obj.typ } +func (obj *object) Exported() bool { return ast.IsExported(obj.name) } +func (obj *object) Id() string { return Id(obj.pkg, obj.name) } +func (obj *object) String() string { panic("abstract") } +func (obj *object) order() uint32 { return obj.order_ } +func (obj *object) scopePos() token.Pos { return obj.scopePos_ } + +func (obj *object) setParent(parent *Scope) { obj.parent = parent } +func (obj *object) setOrder(order uint32) { assert(order > 0); obj.order_ = order } +func (obj *object) setScopePos(pos token.Pos) { obj.scopePos_ = pos } + +func (obj *object) sameId(pkg *Package, name string) bool { + // spec: + // "Two identifiers are different if they are spelled differently, + // or if they appear in different packages and are not exported. + // Otherwise, they are the same." + if name != obj.name { + return false + } + // obj.Name == name + if obj.Exported() { + return true + } + // not exported, so packages must be the same (pkg == nil for + // fields in Universe scope; this can only happen for types + // introduced via Eval) + if pkg == nil || obj.pkg == nil { + return pkg == obj.pkg + } + // pkg != nil && obj.pkg != nil + return pkg.path == obj.pkg.path +} + +// A PkgName represents an imported Go package. +type PkgName struct { + object + imported *Package + used bool // set if the package was used +} + +func NewPkgName(pos token.Pos, pkg *Package, name string, imported *Package) *PkgName { + return &PkgName{object{nil, pos, pkg, name, Typ[Invalid], 0, token.NoPos}, imported, false} +} + +// Imported returns the package that was imported. +// It is distinct from Pkg(), which is the package containing the import statement. +func (obj *PkgName) Imported() *Package { return obj.imported } + +// A Const represents a declared constant. +type Const struct { + object + val exact.Value + visited bool // for initialization cycle detection +} + +func NewConst(pos token.Pos, pkg *Package, name string, typ Type, val exact.Value) *Const { + return &Const{object{nil, pos, pkg, name, typ, 0, token.NoPos}, val, false} +} + +func (obj *Const) Val() exact.Value { return obj.val } + +// A TypeName represents a declared type. +type TypeName struct { + object +} + +func NewTypeName(pos token.Pos, pkg *Package, name string, typ Type) *TypeName { + return &TypeName{object{nil, pos, pkg, name, typ, 0, token.NoPos}} +} + +// A Variable represents a declared variable (including function parameters and results, and struct fields). +type Var struct { + object + anonymous bool // if set, the variable is an anonymous struct field, and name is the type name + visited bool // for initialization cycle detection + isField bool // var is struct field + used bool // set if the variable was used +} + +func NewVar(pos token.Pos, pkg *Package, name string, typ Type) *Var { + return &Var{object: object{nil, pos, pkg, name, typ, 0, token.NoPos}} +} + +func NewParam(pos token.Pos, pkg *Package, name string, typ Type) *Var { + return &Var{object: object{nil, pos, pkg, name, typ, 0, token.NoPos}, used: true} // parameters are always 'used' +} + +func NewField(pos token.Pos, pkg *Package, name string, typ Type, anonymous bool) *Var { + return &Var{object: object{nil, pos, pkg, name, typ, 0, token.NoPos}, anonymous: anonymous, isField: true} +} + +func (obj *Var) Anonymous() bool { return obj.anonymous } + +func (obj *Var) IsField() bool { return obj.isField } + +// A Func represents a declared function, concrete method, or abstract +// (interface) method. Its Type() is always a *Signature. +// An abstract method may belong to many interfaces due to embedding. +type Func struct { + object +} + +func NewFunc(pos token.Pos, pkg *Package, name string, sig *Signature) *Func { + // don't store a nil signature + var typ Type + if sig != nil { + typ = sig + } + return &Func{object{nil, pos, pkg, name, typ, 0, token.NoPos}} +} + +// FullName returns the package- or receiver-type-qualified name of +// function or method obj. +func (obj *Func) FullName() string { + var buf bytes.Buffer + writeFuncName(&buf, obj, nil) + return buf.String() +} + +func (obj *Func) Scope() *Scope { + return obj.typ.(*Signature).scope +} + +// A Label represents a declared label. +type Label struct { + object + used bool // set if the label was used +} + +func NewLabel(pos token.Pos, pkg *Package, name string) *Label { + return &Label{object{pos: pos, pkg: pkg, name: name, typ: Typ[Invalid]}, false} +} + +// A Builtin represents a built-in function. +// Builtins don't have a valid type. +type Builtin struct { + object + id builtinId +} + +func newBuiltin(id builtinId) *Builtin { + return &Builtin{object{name: predeclaredFuncs[id].name, typ: Typ[Invalid]}, id} +} + +// Nil represents the predeclared value nil. +type Nil struct { + object +} + +func writeObject(buf *bytes.Buffer, obj Object, qf Qualifier) { + typ := obj.Type() + switch obj := obj.(type) { + case *PkgName: + fmt.Fprintf(buf, "package %s", obj.Name()) + if path := obj.imported.path; path != "" && path != obj.name { + fmt.Fprintf(buf, " (%q)", path) + } + return + + case *Const: + buf.WriteString("const") + + case *TypeName: + buf.WriteString("type") + typ = typ.Underlying() + + case *Var: + if obj.isField { + buf.WriteString("field") + } else { + buf.WriteString("var") + } + + case *Func: + buf.WriteString("func ") + writeFuncName(buf, obj, qf) + if typ != nil { + WriteSignature(buf, typ.(*Signature), qf) + } + return + + case *Label: + buf.WriteString("label") + typ = nil + + case *Builtin: + buf.WriteString("builtin") + typ = nil + + case *Nil: + buf.WriteString("nil") + return + + default: + panic(fmt.Sprintf("writeObject(%T)", obj)) + } + + buf.WriteByte(' ') + + // For package-level objects, qualify the name. + if obj.Pkg() != nil && obj.Pkg().scope.Lookup(obj.Name()) == obj { + writePackage(buf, obj.Pkg(), qf) + } + buf.WriteString(obj.Name()) + if typ != nil { + buf.WriteByte(' ') + WriteType(buf, typ, qf) + } +} + +func writePackage(buf *bytes.Buffer, pkg *Package, qf Qualifier) { + if pkg == nil { + return + } + var s string + if qf != nil { + s = qf(pkg) + } else { + s = pkg.Path() + } + if s != "" { + buf.WriteString(s) + buf.WriteByte('.') + } +} + +// ObjectString returns the string form of obj. +// The Qualifier controls the printing of +// package-level objects, and may be nil. +func ObjectString(obj Object, qf Qualifier) string { + var buf bytes.Buffer + writeObject(&buf, obj, qf) + return buf.String() +} + +func (obj *PkgName) String() string { return ObjectString(obj, nil) } +func (obj *Const) String() string { return ObjectString(obj, nil) } +func (obj *TypeName) String() string { return ObjectString(obj, nil) } +func (obj *Var) String() string { return ObjectString(obj, nil) } +func (obj *Func) String() string { return ObjectString(obj, nil) } +func (obj *Label) String() string { return ObjectString(obj, nil) } +func (obj *Builtin) String() string { return ObjectString(obj, nil) } +func (obj *Nil) String() string { return ObjectString(obj, nil) } + +func writeFuncName(buf *bytes.Buffer, f *Func, qf Qualifier) { + if f.typ != nil { + sig := f.typ.(*Signature) + if recv := sig.Recv(); recv != nil { + buf.WriteByte('(') + if _, ok := recv.Type().(*Interface); ok { + // gcimporter creates abstract methods of + // named interfaces using the interface type + // (not the named type) as the receiver. + // Don't print it in full. + buf.WriteString("interface") + } else { + WriteType(buf, recv.Type(), qf) + } + buf.WriteByte(')') + buf.WriteByte('.') + } else if f.pkg != nil { + writePackage(buf, f.pkg, qf) + } + } + buf.WriteString(f.name) +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/types/objset.go b/Godeps/_workspace/src/golang.org/x/tools/go/types/objset.go new file mode 100644 index 0000000000..55eb74addb --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/types/objset.go @@ -0,0 +1,31 @@ +// Copyright 2013 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// This file implements objsets. +// +// An objset is similar to a Scope but objset elements +// are identified by their unique id, instead of their +// object name. + +package types + +// An objset is a set of objects identified by their unique id. +// The zero value for objset is a ready-to-use empty objset. +type objset map[string]Object // initialized lazily + +// insert attempts to insert an object obj into objset s. +// If s already contains an alternative object alt with +// the same name, insert leaves s unchanged and returns alt. +// Otherwise it inserts obj and returns nil. +func (s *objset) insert(obj Object) Object { + id := obj.Id() + if alt := (*s)[id]; alt != nil { + return alt + } + if *s == nil { + *s = make(map[string]Object) + } + (*s)[id] = obj + return nil +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/types/operand.go b/Godeps/_workspace/src/golang.org/x/tools/go/types/operand.go new file mode 100644 index 0000000000..d52b30e161 --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/types/operand.go @@ -0,0 +1,288 @@ +// Copyright 2012 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// This file defines operands and associated operations. + +package types + +import ( + "bytes" + "go/ast" + "go/token" + + "golang.org/x/tools/go/exact" +) + +// An operandMode specifies the (addressing) mode of an operand. +type operandMode byte + +const ( + invalid operandMode = iota // operand is invalid + novalue // operand represents no value (result of a function call w/o result) + builtin // operand is a built-in function + typexpr // operand is a type + constant // operand is a constant; the operand's typ is a Basic type + variable // operand is an addressable variable + mapindex // operand is a map index expression (acts like a variable on lhs, commaok on rhs of an assignment) + value // operand is a computed value + commaok // like value, but operand may be used in a comma,ok expression +) + +var operandModeString = [...]string{ + invalid: "invalid operand", + novalue: "no value", + builtin: "built-in", + typexpr: "type", + constant: "constant", + variable: "variable", + mapindex: "map index expression", + value: "value", + commaok: "comma, ok expression", +} + +// An operand represents an intermediate value during type checking. +// Operands have an (addressing) mode, the expression evaluating to +// the operand, the operand's type, a value for constants, and an id +// for built-in functions. +// The zero value of operand is a ready to use invalid operand. +// +type operand struct { + mode operandMode + expr ast.Expr + typ Type + val exact.Value + id builtinId +} + +// pos returns the position of the expression corresponding to x. +// If x is invalid the position is token.NoPos. +// +func (x *operand) pos() token.Pos { + // x.expr may not be set if x is invalid + if x.expr == nil { + return token.NoPos + } + return x.expr.Pos() +} + +// Operand string formats +// (not all "untyped" cases can appear due to the type system, +// but they fall out naturally here) +// +// mode format +// +// invalid ( ) +// novalue ( ) +// builtin ( ) +// typexpr ( ) +// +// constant ( ) +// constant ( of type ) +// constant ( ) +// constant ( of type ) +// +// variable ( ) +// variable ( of type ) +// +// mapindex ( ) +// mapindex ( of type ) +// +// value ( ) +// value ( of type ) +// +// commaok ( ) +// commaok ( of type ) +// +func operandString(x *operand, qf Qualifier) string { + var buf bytes.Buffer + + var expr string + if x.expr != nil { + expr = ExprString(x.expr) + } else { + switch x.mode { + case builtin: + expr = predeclaredFuncs[x.id].name + case typexpr: + expr = TypeString(x.typ, qf) + case constant: + expr = x.val.String() + } + } + + // ( + if expr != "" { + buf.WriteString(expr) + buf.WriteString(" (") + } + + // + hasType := false + switch x.mode { + case invalid, novalue, builtin, typexpr: + // no type + default: + // has type + if isUntyped(x.typ) { + buf.WriteString(x.typ.(*Basic).name) + buf.WriteByte(' ') + break + } + hasType = true + } + + // + buf.WriteString(operandModeString[x.mode]) + + // + if x.mode == constant { + if s := x.val.String(); s != expr { + buf.WriteByte(' ') + buf.WriteString(s) + } + } + + // + if hasType { + if x.typ != Typ[Invalid] { + buf.WriteString(" of type ") + WriteType(&buf, x.typ, qf) + } else { + buf.WriteString(" with invalid type") + } + } + + // ) + if expr != "" { + buf.WriteByte(')') + } + + return buf.String() +} + +func (x *operand) String() string { + return operandString(x, nil) +} + +// setConst sets x to the untyped constant for literal lit. +func (x *operand) setConst(tok token.Token, lit string) { + val := exact.MakeFromLiteral(lit, tok) + if val == nil { + // TODO(gri) Should we make it an unknown constant instead? + x.mode = invalid + return + } + + var kind BasicKind + switch tok { + case token.INT: + kind = UntypedInt + case token.FLOAT: + kind = UntypedFloat + case token.IMAG: + kind = UntypedComplex + case token.CHAR: + kind = UntypedRune + case token.STRING: + kind = UntypedString + } + + x.mode = constant + x.typ = Typ[kind] + x.val = val +} + +// isNil reports whether x is the nil value. +func (x *operand) isNil() bool { + return x.mode == value && x.typ == Typ[UntypedNil] +} + +// TODO(gri) The functions operand.assignableTo, checker.convertUntyped, +// checker.representable, and checker.assignment are +// overlapping in functionality. Need to simplify and clean up. + +// assignableTo reports whether x is assignable to a variable of type T. +func (x *operand) assignableTo(conf *Config, T Type) bool { + if x.mode == invalid || T == Typ[Invalid] { + return true // avoid spurious errors + } + + V := x.typ + + // x's type is identical to T + if Identical(V, T) { + return true + } + + Vu := V.Underlying() + Tu := T.Underlying() + + // T is an interface type and x implements T + // (Do this check first as it might succeed early.) + if Ti, ok := Tu.(*Interface); ok { + if Implements(x.typ, Ti) { + return true + } + } + + // x's type V and T have identical underlying types + // and at least one of V or T is not a named type + if Identical(Vu, Tu) && (!isNamed(V) || !isNamed(T)) { + return true + } + + // x is a bidirectional channel value, T is a channel + // type, x's type V and T have identical element types, + // and at least one of V or T is not a named type + if Vc, ok := Vu.(*Chan); ok && Vc.dir == SendRecv { + if Tc, ok := Tu.(*Chan); ok && Identical(Vc.elem, Tc.elem) { + return !isNamed(V) || !isNamed(T) + } + } + + // x is the predeclared identifier nil and T is a pointer, + // function, slice, map, channel, or interface type + if x.isNil() { + switch t := Tu.(type) { + case *Basic: + if t.kind == UnsafePointer { + return true + } + case *Pointer, *Signature, *Slice, *Map, *Chan, *Interface: + return true + } + return false + } + + // x is an untyped constant representable by a value of type T + // TODO(gri) This is borrowing from checker.convertUntyped and + // checker.representable. Need to clean up. + if isUntyped(Vu) { + switch t := Tu.(type) { + case *Basic: + if x.mode == constant { + return representableConst(x.val, conf, t.kind, nil) + } + // The result of a comparison is an untyped boolean, + // but may not be a constant. + if Vb, _ := Vu.(*Basic); Vb != nil { + return Vb.kind == UntypedBool && isBoolean(Tu) + } + case *Interface: + return x.isNil() || t.Empty() + case *Pointer, *Signature, *Slice, *Map, *Chan: + return x.isNil() + } + } + + return false +} + +// isInteger reports whether x is a value of integer type +// or an untyped constant representable as an integer. +func (x *operand) isInteger() bool { + return x.mode == invalid || + isInteger(x.typ) || + isUntyped(x.typ) && x.mode == constant && representableConst(x.val, nil, UntypedInt, nil) // no *Config required for UntypedInt +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/types/ordering.go b/Godeps/_workspace/src/golang.org/x/tools/go/types/ordering.go new file mode 100644 index 0000000000..6bb98f2dc1 --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/types/ordering.go @@ -0,0 +1,127 @@ +// Copyright 2014 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// This file implements resolveOrder. + +package types + +import ( + "go/ast" + "sort" +) + +// resolveOrder computes the order in which package-level objects +// must be type-checked. +// +// Interface types appear first in the list, sorted topologically +// by dependencies on embedded interfaces that are also declared +// in this package, followed by all other objects sorted in source +// order. +// +// TODO(gri) Consider sorting all types by dependencies here, and +// in the process check _and_ report type cycles. This may simplify +// the full type-checking phase. +// +func (check *Checker) resolveOrder() []Object { + var ifaces, others []Object + + // collect interface types with their dependencies, and all other objects + for obj := range check.objMap { + if ityp := check.interfaceFor(obj); ityp != nil { + ifaces = append(ifaces, obj) + // determine dependencies on embedded interfaces + for _, f := range ityp.Methods.List { + if len(f.Names) == 0 { + // Embedded interface: The type must be a (possibly + // qualified) identifier denoting another interface. + // Imported interfaces are already fully resolved, + // so we can ignore qualified identifiers. + if ident, _ := f.Type.(*ast.Ident); ident != nil { + embedded := check.pkg.scope.Lookup(ident.Name) + if check.interfaceFor(embedded) != nil { + check.objMap[obj].addDep(embedded) + } + } + } + } + } else { + others = append(others, obj) + } + } + + // final object order + var order []Object + + // sort interface types topologically by dependencies, + // and in source order if there are no dependencies + sort.Sort(inSourceOrder(ifaces)) + if debug { + for _, obj := range ifaces { + assert(check.objMap[obj].mark == 0) + } + } + for _, obj := range ifaces { + check.appendInPostOrder(&order, obj) + } + + // sort everything else in source order + sort.Sort(inSourceOrder(others)) + + return append(order, others...) +} + +// interfaceFor returns the AST interface denoted by obj, or nil. +func (check *Checker) interfaceFor(obj Object) *ast.InterfaceType { + tname, _ := obj.(*TypeName) + if tname == nil { + return nil // not a type + } + d := check.objMap[obj] + if d == nil { + check.dump("%s: %s should have been declared", obj.Pos(), obj.Name()) + unreachable() + } + if d.typ == nil { + return nil // invalid AST - ignore (will be handled later) + } + ityp, _ := d.typ.(*ast.InterfaceType) + return ityp +} + +func (check *Checker) appendInPostOrder(order *[]Object, obj Object) { + d := check.objMap[obj] + if d.mark != 0 { + // We've already seen this object; either because it's + // already added to order, or because we have a cycle. + // In both cases we stop. Cycle errors are reported + // when type-checking types. + return + } + d.mark = 1 + + for _, obj := range orderedSetObjects(d.deps) { + check.appendInPostOrder(order, obj) + } + + *order = append(*order, obj) +} + +func orderedSetObjects(set map[Object]bool) []Object { + list := make([]Object, len(set)) + i := 0 + for obj := range set { + // we don't care about the map element value + list[i] = obj + i++ + } + sort.Sort(inSourceOrder(list)) + return list +} + +// inSourceOrder implements the sort.Sort interface. +type inSourceOrder []Object + +func (a inSourceOrder) Len() int { return len(a) } +func (a inSourceOrder) Less(i, j int) bool { return a[i].order() < a[j].order() } +func (a inSourceOrder) Swap(i, j int) { a[i], a[j] = a[j], a[i] } diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/types/package.go b/Godeps/_workspace/src/golang.org/x/tools/go/types/package.go new file mode 100644 index 0000000000..48fe8398fe --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/types/package.go @@ -0,0 +1,65 @@ +// Copyright 2013 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package types + +import ( + "fmt" + "go/token" +) + +// A Package describes a Go package. +type Package struct { + path string + name string + scope *Scope + complete bool + imports []*Package + fake bool // scope lookup errors are silently dropped if package is fake (internal use only) +} + +// NewPackage returns a new Package for the given package path and name; +// the name must not be the blank identifier. +// The package is not complete and contains no explicit imports. +func NewPackage(path, name string) *Package { + if name == "_" { + panic("invalid package name _") + } + scope := NewScope(Universe, token.NoPos, token.NoPos, fmt.Sprintf("package %q", path)) + return &Package{path: path, name: name, scope: scope} +} + +// Path returns the package path. +func (pkg *Package) Path() string { return pkg.path } + +// Name returns the package name. +func (pkg *Package) Name() string { return pkg.name } + +// Scope returns the (complete or incomplete) package scope +// holding the objects declared at package level (TypeNames, +// Consts, Vars, and Funcs). +func (pkg *Package) Scope() *Scope { return pkg.scope } + +// A package is complete if its scope contains (at least) all +// exported objects; otherwise it is incomplete. +func (pkg *Package) Complete() bool { return pkg.complete } + +// MarkComplete marks a package as complete. +func (pkg *Package) MarkComplete() { pkg.complete = true } + +// Imports returns the list of packages directly imported by +// pkg; the list is in source order. Package unsafe is excluded. +// +// If pkg was loaded from export data, Imports includes packages that +// provide package-level objects referenced by pkg. This may be more or +// less than the set of packages directly imported by pkg's source code. +func (pkg *Package) Imports() []*Package { return pkg.imports } + +// SetImports sets the list of explicitly imported packages to list. +// It is the caller's responsibility to make sure list elements are unique. +func (pkg *Package) SetImports(list []*Package) { pkg.imports = list } + +func (pkg *Package) String() string { + return fmt.Sprintf("package %s (%q)", pkg.name, pkg.path) +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/types/predicates.go b/Godeps/_workspace/src/golang.org/x/tools/go/types/predicates.go new file mode 100644 index 0000000000..993c6d290b --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/types/predicates.go @@ -0,0 +1,309 @@ +// Copyright 2012 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// This file implements commonly used type predicates. + +package types + +import "sort" + +func isNamed(typ Type) bool { + if _, ok := typ.(*Basic); ok { + return ok + } + _, ok := typ.(*Named) + return ok +} + +func isBoolean(typ Type) bool { + t, ok := typ.Underlying().(*Basic) + return ok && t.info&IsBoolean != 0 +} + +func isInteger(typ Type) bool { + t, ok := typ.Underlying().(*Basic) + return ok && t.info&IsInteger != 0 +} + +func isUnsigned(typ Type) bool { + t, ok := typ.Underlying().(*Basic) + return ok && t.info&IsUnsigned != 0 +} + +func isFloat(typ Type) bool { + t, ok := typ.Underlying().(*Basic) + return ok && t.info&IsFloat != 0 +} + +func isComplex(typ Type) bool { + t, ok := typ.Underlying().(*Basic) + return ok && t.info&IsComplex != 0 +} + +func isNumeric(typ Type) bool { + t, ok := typ.Underlying().(*Basic) + return ok && t.info&IsNumeric != 0 +} + +func isString(typ Type) bool { + t, ok := typ.Underlying().(*Basic) + return ok && t.info&IsString != 0 +} + +func isTyped(typ Type) bool { + t, ok := typ.Underlying().(*Basic) + return !ok || t.info&IsUntyped == 0 +} + +func isUntyped(typ Type) bool { + t, ok := typ.Underlying().(*Basic) + return ok && t.info&IsUntyped != 0 +} + +func isOrdered(typ Type) bool { + t, ok := typ.Underlying().(*Basic) + return ok && t.info&IsOrdered != 0 +} + +func isConstType(typ Type) bool { + t, ok := typ.Underlying().(*Basic) + return ok && t.info&IsConstType != 0 +} + +// IsInterface reports whether typ is an interface type. +func IsInterface(typ Type) bool { + _, ok := typ.Underlying().(*Interface) + return ok +} + +// Comparable reports whether values of type T are comparable. +func Comparable(T Type) bool { + switch t := T.Underlying().(type) { + case *Basic: + // assume invalid types to be comparable + // to avoid follow-up errors + return t.kind != UntypedNil + case *Pointer, *Interface, *Chan: + return true + case *Struct: + for _, f := range t.fields { + if !Comparable(f.typ) { + return false + } + } + return true + case *Array: + return Comparable(t.elem) + } + return false +} + +// hasNil reports whether a type includes the nil value. +func hasNil(typ Type) bool { + switch t := typ.Underlying().(type) { + case *Basic: + return t.kind == UnsafePointer + case *Slice, *Pointer, *Signature, *Interface, *Map, *Chan: + return true + } + return false +} + +// Identical reports whether x and y are identical. +func Identical(x, y Type) bool { + return identical(x, y, nil) +} + +// An ifacePair is a node in a stack of interface type pairs compared for identity. +type ifacePair struct { + x, y *Interface + prev *ifacePair +} + +func (p *ifacePair) identical(q *ifacePair) bool { + return p.x == q.x && p.y == q.y || p.x == q.y && p.y == q.x +} + +func identical(x, y Type, p *ifacePair) bool { + if x == y { + return true + } + + switch x := x.(type) { + case *Basic: + // Basic types are singletons except for the rune and byte + // aliases, thus we cannot solely rely on the x == y check + // above. + if y, ok := y.(*Basic); ok { + return x.kind == y.kind + } + + case *Array: + // Two array types are identical if they have identical element types + // and the same array length. + if y, ok := y.(*Array); ok { + return x.len == y.len && identical(x.elem, y.elem, p) + } + + case *Slice: + // Two slice types are identical if they have identical element types. + if y, ok := y.(*Slice); ok { + return identical(x.elem, y.elem, p) + } + + case *Struct: + // Two struct types are identical if they have the same sequence of fields, + // and if corresponding fields have the same names, and identical types, + // and identical tags. Two anonymous fields are considered to have the same + // name. Lower-case field names from different packages are always different. + if y, ok := y.(*Struct); ok { + if x.NumFields() == y.NumFields() { + for i, f := range x.fields { + g := y.fields[i] + if f.anonymous != g.anonymous || + x.Tag(i) != y.Tag(i) || + !f.sameId(g.pkg, g.name) || + !identical(f.typ, g.typ, p) { + return false + } + } + return true + } + } + + case *Pointer: + // Two pointer types are identical if they have identical base types. + if y, ok := y.(*Pointer); ok { + return identical(x.base, y.base, p) + } + + case *Tuple: + // Two tuples types are identical if they have the same number of elements + // and corresponding elements have identical types. + if y, ok := y.(*Tuple); ok { + if x.Len() == y.Len() { + if x != nil { + for i, v := range x.vars { + w := y.vars[i] + if !identical(v.typ, w.typ, p) { + return false + } + } + } + return true + } + } + + case *Signature: + // Two function types are identical if they have the same number of parameters + // and result values, corresponding parameter and result types are identical, + // and either both functions are variadic or neither is. Parameter and result + // names are not required to match. + if y, ok := y.(*Signature); ok { + return x.variadic == y.variadic && + identical(x.params, y.params, p) && + identical(x.results, y.results, p) + } + + case *Interface: + // Two interface types are identical if they have the same set of methods with + // the same names and identical function types. Lower-case method names from + // different packages are always different. The order of the methods is irrelevant. + if y, ok := y.(*Interface); ok { + a := x.allMethods + b := y.allMethods + if len(a) == len(b) { + // Interface types are the only types where cycles can occur + // that are not "terminated" via named types; and such cycles + // can only be created via method parameter types that are + // anonymous interfaces (directly or indirectly) embedding + // the current interface. Example: + // + // type T interface { + // m() interface{T} + // } + // + // If two such (differently named) interfaces are compared, + // endless recursion occurs if the cycle is not detected. + // + // If x and y were compared before, they must be equal + // (if they were not, the recursion would have stopped); + // search the ifacePair stack for the same pair. + // + // This is a quadratic algorithm, but in practice these stacks + // are extremely short (bounded by the nesting depth of interface + // type declarations that recur via parameter types, an extremely + // rare occurrence). An alternative implementation might use a + // "visited" map, but that is probably less efficient overall. + q := &ifacePair{x, y, p} + for p != nil { + if p.identical(q) { + return true // same pair was compared before + } + p = p.prev + } + if debug { + assert(sort.IsSorted(byUniqueMethodName(a))) + assert(sort.IsSorted(byUniqueMethodName(b))) + } + for i, f := range a { + g := b[i] + if f.Id() != g.Id() || !identical(f.typ, g.typ, q) { + return false + } + } + return true + } + } + + case *Map: + // Two map types are identical if they have identical key and value types. + if y, ok := y.(*Map); ok { + return identical(x.key, y.key, p) && identical(x.elem, y.elem, p) + } + + case *Chan: + // Two channel types are identical if they have identical value types + // and the same direction. + if y, ok := y.(*Chan); ok { + return x.dir == y.dir && identical(x.elem, y.elem, p) + } + + case *Named: + // Two named types are identical if their type names originate + // in the same type declaration. + if y, ok := y.(*Named); ok { + return x.obj == y.obj + } + + default: + unreachable() + } + + return false +} + +// defaultType returns the default "typed" type for an "untyped" type; +// it returns the incoming type for all other types. The default type +// for untyped nil is untyped nil. +// +func defaultType(typ Type) Type { + if t, ok := typ.(*Basic); ok { + switch t.kind { + case UntypedBool: + return Typ[Bool] + case UntypedInt: + return Typ[Int] + case UntypedRune: + return universeRune // use 'rune' name + case UntypedFloat: + return Typ[Float64] + case UntypedComplex: + return Typ[Complex128] + case UntypedString: + return Typ[String] + } + } + return typ +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/types/resolver.go b/Godeps/_workspace/src/golang.org/x/tools/go/types/resolver.go new file mode 100644 index 0000000000..374ffc2800 --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/types/resolver.go @@ -0,0 +1,453 @@ +// Copyright 2013 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package types + +import ( + "errors" + "fmt" + "go/ast" + "go/token" + pathLib "path" + "strconv" + "strings" + "unicode" + + "golang.org/x/tools/go/exact" +) + +// A declInfo describes a package-level const, type, var, or func declaration. +type declInfo struct { + file *Scope // scope of file containing this declaration + lhs []*Var // lhs of n:1 variable declarations, or nil + typ ast.Expr // type, or nil + init ast.Expr // init expression, or nil + fdecl *ast.FuncDecl // func declaration, or nil + + deps map[Object]bool // type and init dependencies; lazily allocated + mark int // for dependency analysis +} + +// hasInitializer reports whether the declared object has an initialization +// expression or function body. +func (d *declInfo) hasInitializer() bool { + return d.init != nil || d.fdecl != nil && d.fdecl.Body != nil +} + +// addDep adds obj as a dependency to d. +func (d *declInfo) addDep(obj Object) { + m := d.deps + if m == nil { + m = make(map[Object]bool) + d.deps = m + } + m[obj] = true +} + +// arityMatch checks that the lhs and rhs of a const or var decl +// have the appropriate number of names and init exprs. For const +// decls, init is the value spec providing the init exprs; for +// var decls, init is nil (the init exprs are in s in this case). +func (check *Checker) arityMatch(s, init *ast.ValueSpec) { + l := len(s.Names) + r := len(s.Values) + if init != nil { + r = len(init.Values) + } + + switch { + case init == nil && r == 0: + // var decl w/o init expr + if s.Type == nil { + check.errorf(s.Pos(), "missing type or init expr") + } + case l < r: + if l < len(s.Values) { + // init exprs from s + n := s.Values[l] + check.errorf(n.Pos(), "extra init expr %s", n) + // TODO(gri) avoid declared but not used error here + } else { + // init exprs "inherited" + check.errorf(s.Pos(), "extra init expr at %s", init.Pos()) + // TODO(gri) avoid declared but not used error here + } + case l > r && (init != nil || r != 1): + n := s.Names[r] + check.errorf(n.Pos(), "missing init expr for %s", n) + } +} + +func validatedImportPath(path string) (string, error) { + s, err := strconv.Unquote(path) + if err != nil { + return "", err + } + if s == "" { + return "", fmt.Errorf("empty string") + } + const illegalChars = `!"#$%&'()*,:;<=>?[\]^{|}` + "`\uFFFD" + for _, r := range s { + if !unicode.IsGraphic(r) || unicode.IsSpace(r) || strings.ContainsRune(illegalChars, r) { + return s, fmt.Errorf("invalid character %#U", r) + } + } + return s, nil +} + +// declarePkgObj declares obj in the package scope, records its ident -> obj mapping, +// and updates check.objMap. The object must not be a function or method. +func (check *Checker) declarePkgObj(ident *ast.Ident, obj Object, d *declInfo) { + assert(ident.Name == obj.Name()) + + // spec: "A package-scope or file-scope identifier with name init + // may only be declared to be a function with this (func()) signature." + if ident.Name == "init" { + check.errorf(ident.Pos(), "cannot declare init - must be func") + return + } + + check.declare(check.pkg.scope, ident, obj, token.NoPos) + check.objMap[obj] = d + obj.setOrder(uint32(len(check.objMap))) +} + +// filename returns a filename suitable for debugging output. +func (check *Checker) filename(fileNo int) string { + file := check.files[fileNo] + if pos := file.Pos(); pos.IsValid() { + return check.fset.File(pos).Name() + } + return fmt.Sprintf("file[%d]", fileNo) +} + +// collectObjects collects all file and package objects and inserts them +// into their respective scopes. It also performs imports and associates +// methods with receiver base type names. +func (check *Checker) collectObjects() { + pkg := check.pkg + + importer := check.conf.Import + if importer == nil { + if DefaultImport != nil { + importer = DefaultImport + } else { + // Panic if we encounter an import. + importer = func(map[string]*Package, string) (*Package, error) { + panic(`no Config.Import or DefaultImport (missing import _ "golang.org/x/tools/go/gcimporter"?)`) + } + } + } + + // pkgImports is the set of packages already imported by any package file seen + // so far. Used to avoid duplicate entries in pkg.imports. Allocate and populate + // it (pkg.imports may not be empty if we are checking test files incrementally). + var pkgImports = make(map[*Package]bool) + for _, imp := range pkg.imports { + pkgImports[imp] = true + } + + for fileNo, file := range check.files { + // The package identifier denotes the current package, + // but there is no corresponding package object. + check.recordDef(file.Name, nil) + + // Use the actual source file extent rather than *ast.File extent since the + // latter doesn't include comments which appear at the start or end of the file. + // Be conservative and use the *ast.File extent if we don't have a *token.File. + pos, end := file.Pos(), file.End() + if f := check.fset.File(file.Pos()); f != nil { + pos, end = token.Pos(f.Base()), token.Pos(f.Base()+f.Size()) + } + fileScope := NewScope(check.pkg.scope, pos, end, check.filename(fileNo)) + check.recordScope(file, fileScope) + + for _, decl := range file.Decls { + switch d := decl.(type) { + case *ast.BadDecl: + // ignore + + case *ast.GenDecl: + var last *ast.ValueSpec // last ValueSpec with type or init exprs seen + for iota, spec := range d.Specs { + switch s := spec.(type) { + case *ast.ImportSpec: + // import package + var imp *Package + path, err := validatedImportPath(s.Path.Value) + if err != nil { + check.errorf(s.Path.Pos(), "invalid import path (%s)", err) + continue + } + if path == "C" && check.conf.FakeImportC { + // TODO(gri) shouldn't create a new one each time + imp = NewPackage("C", "C") + imp.fake = true + } else { + var err error + imp, err = importer(check.conf.Packages, path) + if imp == nil && err == nil { + err = errors.New("Config.Import returned nil but no error") + } + if err != nil { + check.errorf(s.Path.Pos(), "could not import %s (%s)", path, err) + continue + } + } + + // add package to list of explicit imports + // (this functionality is provided as a convenience + // for clients; it is not needed for type-checking) + if !pkgImports[imp] { + pkgImports[imp] = true + if imp != Unsafe { + pkg.imports = append(pkg.imports, imp) + } + } + + // local name overrides imported package name + name := imp.name + if s.Name != nil { + name = s.Name.Name + if name == "init" { + check.errorf(s.Name.Pos(), "cannot declare init - must be func") + continue + } + } + + obj := NewPkgName(s.Pos(), pkg, name, imp) + if s.Name != nil { + // in a dot-import, the dot represents the package + check.recordDef(s.Name, obj) + } else { + check.recordImplicit(s, obj) + } + + // add import to file scope + if name == "." { + // merge imported scope with file scope + for _, obj := range imp.scope.elems { + // A package scope may contain non-exported objects, + // do not import them! + if obj.Exported() { + // TODO(gri) When we import a package, we create + // a new local package object. We should do the + // same for each dot-imported object. That way + // they can have correct position information. + // (We must not modify their existing position + // information because the same package - found + // via Config.Packages - may be dot-imported in + // another package!) + check.declare(fileScope, nil, obj, token.NoPos) + check.recordImplicit(s, obj) + } + } + // add position to set of dot-import positions for this file + // (this is only needed for "imported but not used" errors) + check.addUnusedDotImport(fileScope, imp, s.Pos()) + } else { + // declare imported package object in file scope + check.declare(fileScope, nil, obj, token.NoPos) + } + + case *ast.ValueSpec: + switch d.Tok { + case token.CONST: + // determine which initialization expressions to use + switch { + case s.Type != nil || len(s.Values) > 0: + last = s + case last == nil: + last = new(ast.ValueSpec) // make sure last exists + } + + // declare all constants + for i, name := range s.Names { + obj := NewConst(name.Pos(), pkg, name.Name, nil, exact.MakeInt64(int64(iota))) + + var init ast.Expr + if i < len(last.Values) { + init = last.Values[i] + } + + d := &declInfo{file: fileScope, typ: last.Type, init: init} + check.declarePkgObj(name, obj, d) + } + + check.arityMatch(s, last) + + case token.VAR: + lhs := make([]*Var, len(s.Names)) + // If there's exactly one rhs initializer, use + // the same declInfo d1 for all lhs variables + // so that each lhs variable depends on the same + // rhs initializer (n:1 var declaration). + var d1 *declInfo + if len(s.Values) == 1 { + // The lhs elements are only set up after the for loop below, + // but that's ok because declareVar only collects the declInfo + // for a later phase. + d1 = &declInfo{file: fileScope, lhs: lhs, typ: s.Type, init: s.Values[0]} + } + + // declare all variables + for i, name := range s.Names { + obj := NewVar(name.Pos(), pkg, name.Name, nil) + lhs[i] = obj + + d := d1 + if d == nil { + // individual assignments + var init ast.Expr + if i < len(s.Values) { + init = s.Values[i] + } + d = &declInfo{file: fileScope, typ: s.Type, init: init} + } + + check.declarePkgObj(name, obj, d) + } + + check.arityMatch(s, nil) + + default: + check.invalidAST(s.Pos(), "invalid token %s", d.Tok) + } + + case *ast.TypeSpec: + obj := NewTypeName(s.Name.Pos(), pkg, s.Name.Name, nil) + check.declarePkgObj(s.Name, obj, &declInfo{file: fileScope, typ: s.Type}) + + default: + check.invalidAST(s.Pos(), "unknown ast.Spec node %T", s) + } + } + + case *ast.FuncDecl: + name := d.Name.Name + obj := NewFunc(d.Name.Pos(), pkg, name, nil) + if d.Recv == nil { + // regular function + if name == "init" { + // don't declare init functions in the package scope - they are invisible + obj.parent = pkg.scope + check.recordDef(d.Name, obj) + // init functions must have a body + if d.Body == nil { + check.softErrorf(obj.pos, "missing function body") + } + } else { + check.declare(pkg.scope, d.Name, obj, token.NoPos) + } + } else { + // method + check.recordDef(d.Name, obj) + // Associate method with receiver base type name, if possible. + // Ignore methods that have an invalid receiver, or a blank _ + // receiver name. They will be type-checked later, with regular + // functions. + if list := d.Recv.List; len(list) > 0 { + typ := list[0].Type + if ptr, _ := typ.(*ast.StarExpr); ptr != nil { + typ = ptr.X + } + if base, _ := typ.(*ast.Ident); base != nil && base.Name != "_" { + check.assocMethod(base.Name, obj) + } + } + } + info := &declInfo{file: fileScope, fdecl: d} + check.objMap[obj] = info + obj.setOrder(uint32(len(check.objMap))) + + default: + check.invalidAST(d.Pos(), "unknown ast.Decl node %T", d) + } + } + } + + // verify that objects in package and file scopes have different names + for _, scope := range check.pkg.scope.children /* file scopes */ { + for _, obj := range scope.elems { + if alt := pkg.scope.Lookup(obj.Name()); alt != nil { + if pkg, ok := obj.(*PkgName); ok { + check.errorf(alt.Pos(), "%s already declared through import of %s", alt.Name(), pkg.Imported()) + check.reportAltDecl(pkg) + } else { + check.errorf(alt.Pos(), "%s already declared through dot-import of %s", alt.Name(), obj.Pkg()) + // TODO(gri) dot-imported objects don't have a position; reportAltDecl won't print anything + check.reportAltDecl(obj) + } + } + } + } +} + +// packageObjects typechecks all package objects in objList, but not function bodies. +func (check *Checker) packageObjects(objList []Object) { + // add new methods to already type-checked types (from a prior Checker.Files call) + for _, obj := range objList { + if obj, _ := obj.(*TypeName); obj != nil && obj.typ != nil { + check.addMethodDecls(obj) + } + } + + // pre-allocate space for type declaration paths so that the underlying array is reused + typePath := make([]*TypeName, 0, 8) + + for _, obj := range objList { + check.objDecl(obj, nil, typePath) + } + + // At this point we may have a non-empty check.methods map; this means that not all + // entries were deleted at the end of typeDecl because the respective receiver base + // types were not found. In that case, an error was reported when declaring those + // methods. We can now safely discard this map. + check.methods = nil +} + +// functionBodies typechecks all function bodies. +func (check *Checker) functionBodies() { + for _, f := range check.funcs { + check.funcBody(f.decl, f.name, f.sig, f.body) + } +} + +// unusedImports checks for unused imports. +func (check *Checker) unusedImports() { + // if function bodies are not checked, packages' uses are likely missing - don't check + if check.conf.IgnoreFuncBodies { + return + } + + // spec: "It is illegal (...) to directly import a package without referring to + // any of its exported identifiers. To import a package solely for its side-effects + // (initialization), use the blank identifier as explicit package name." + + // check use of regular imported packages + for _, scope := range check.pkg.scope.children /* file scopes */ { + for _, obj := range scope.elems { + if obj, ok := obj.(*PkgName); ok { + // Unused "blank imports" are automatically ignored + // since _ identifiers are not entered into scopes. + if !obj.used { + path := obj.imported.path + base := pathLib.Base(path) + if obj.name == base { + check.softErrorf(obj.pos, "%q imported but not used", path) + } else { + check.softErrorf(obj.pos, "%q imported but not used as %s", path, obj.name) + } + } + } + } + } + + // check use of dot-imported packages + for _, unusedDotImports := range check.unusedDotImports { + for pkg, pos := range unusedDotImports { + check.softErrorf(pos, "%q imported but not used", pkg.path) + } + } +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/types/resolver_test.go b/Godeps/_workspace/src/golang.org/x/tools/go/types/resolver_test.go new file mode 100644 index 0000000000..2ef1f18648 --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/types/resolver_test.go @@ -0,0 +1,189 @@ +// Copyright 2011 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package types_test + +import ( + "fmt" + "go/ast" + "go/parser" + "go/token" + "sort" + "testing" + + _ "golang.org/x/tools/go/gcimporter" + . "golang.org/x/tools/go/types" +) + +func TestResolveIdents(t *testing.T) { + skipSpecialPlatforms(t) + + sources := []string{ + ` + package p + import "fmt" + import "math" + const pi = math.Pi + func sin(x float64) float64 { + return math.Sin(x) + } + var Println = fmt.Println + `, + ` + package p + import "fmt" + type errorStringer struct { fmt.Stringer; error } + func f() string { + _ = "foo" + return fmt.Sprintf("%d", g()) + } + func g() (x int) { return } + `, + ` + package p + import . "go/parser" + import "sync" + func h() Mode { return ImportsOnly } + var _, x int = 1, 2 + func init() {} + type T struct{ *sync.Mutex; a, b, c int} + type I interface{ m() } + var _ = T{a: 1, b: 2, c: 3} + func (_ T) m() {} + func (T) _() {} + var i I + var _ = i.m + func _(s []int) { for i, x := range s { _, _ = i, x } } + func _(x interface{}) { + switch x := x.(type) { + case int: + _ = x + } + switch {} // implicit 'true' tag + } + `, + ` + package p + type S struct{} + func (T) _() {} + func (T) _() {} + `, + ` + package p + func _() { + L0: + L1: + goto L0 + for { + goto L1 + } + if true { + goto L2 + } + L2: + } + `, + } + + pkgnames := []string{ + "fmt", + "math", + } + + // parse package files + fset := token.NewFileSet() + var files []*ast.File + for i, src := range sources { + f, err := parser.ParseFile(fset, fmt.Sprintf("sources[%d]", i), src, parser.DeclarationErrors) + if err != nil { + t.Fatal(err) + } + files = append(files, f) + } + + // resolve and type-check package AST + var conf Config + uses := make(map[*ast.Ident]Object) + defs := make(map[*ast.Ident]Object) + _, err := conf.Check("testResolveIdents", fset, files, &Info{Defs: defs, Uses: uses}) + if err != nil { + t.Fatal(err) + } + + // check that all packages were imported + for _, name := range pkgnames { + if conf.Packages[name] == nil { + t.Errorf("package %s not imported", name) + } + } + + // check that qualified identifiers are resolved + for _, f := range files { + ast.Inspect(f, func(n ast.Node) bool { + if s, ok := n.(*ast.SelectorExpr); ok { + if x, ok := s.X.(*ast.Ident); ok { + obj := uses[x] + if obj == nil { + t.Errorf("%s: unresolved qualified identifier %s", fset.Position(x.Pos()), x.Name) + return false + } + if _, ok := obj.(*PkgName); ok && uses[s.Sel] == nil { + t.Errorf("%s: unresolved selector %s", fset.Position(s.Sel.Pos()), s.Sel.Name) + return false + } + return false + } + return false + } + return true + }) + } + + for id, obj := range uses { + if obj == nil { + t.Errorf("%s: Uses[%s] == nil", fset.Position(id.Pos()), id.Name) + } + } + + // check that each identifier in the source is found in uses or defs or both + var both []string + for _, f := range files { + ast.Inspect(f, func(n ast.Node) bool { + if x, ok := n.(*ast.Ident); ok { + var objects int + if _, found := uses[x]; found { + objects |= 1 + delete(uses, x) + } + if _, found := defs[x]; found { + objects |= 2 + delete(defs, x) + } + if objects == 0 { + t.Errorf("%s: unresolved identifier %s", fset.Position(x.Pos()), x.Name) + } else if objects == 3 { + both = append(both, x.Name) + } + return false + } + return true + }) + } + + // check the expected set of idents that are simultaneously uses and defs + sort.Strings(both) + if got, want := fmt.Sprint(both), "[Mutex Stringer error]"; got != want { + t.Errorf("simultaneous uses/defs = %s, want %s", got, want) + } + + // any left-over identifiers didn't exist in the source + for x := range uses { + t.Errorf("%s: identifier %s not present in source", fset.Position(x.Pos()), x.Name) + } + for x := range defs { + t.Errorf("%s: identifier %s not present in source", fset.Position(x.Pos()), x.Name) + } + + // TODO(gri) add tests to check ImplicitObj callbacks +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/types/return.go b/Godeps/_workspace/src/golang.org/x/tools/go/types/return.go new file mode 100644 index 0000000000..6628985214 --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/types/return.go @@ -0,0 +1,185 @@ +// Copyright 2013 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// This file implements isTerminating. + +package types + +import ( + "go/ast" + "go/token" +) + +// isTerminating reports if s is a terminating statement. +// If s is labeled, label is the label name; otherwise s +// is "". +func (check *Checker) isTerminating(s ast.Stmt, label string) bool { + switch s := s.(type) { + default: + unreachable() + + case *ast.BadStmt, *ast.DeclStmt, *ast.EmptyStmt, *ast.SendStmt, + *ast.IncDecStmt, *ast.AssignStmt, *ast.GoStmt, *ast.DeferStmt, + *ast.RangeStmt: + // no chance + + case *ast.LabeledStmt: + return check.isTerminating(s.Stmt, s.Label.Name) + + case *ast.ExprStmt: + // the predeclared (possibly parenthesized) panic() function is terminating + if call, _ := unparen(s.X).(*ast.CallExpr); call != nil { + if id, _ := call.Fun.(*ast.Ident); id != nil { + if _, obj := check.scope.LookupParent(id.Name, token.NoPos); obj != nil { + if b, _ := obj.(*Builtin); b != nil && b.id == _Panic { + return true + } + } + } + } + + case *ast.ReturnStmt: + return true + + case *ast.BranchStmt: + if s.Tok == token.GOTO || s.Tok == token.FALLTHROUGH { + return true + } + + case *ast.BlockStmt: + return check.isTerminatingList(s.List, "") + + case *ast.IfStmt: + if s.Else != nil && + check.isTerminating(s.Body, "") && + check.isTerminating(s.Else, "") { + return true + } + + case *ast.SwitchStmt: + return check.isTerminatingSwitch(s.Body, label) + + case *ast.TypeSwitchStmt: + return check.isTerminatingSwitch(s.Body, label) + + case *ast.SelectStmt: + for _, s := range s.Body.List { + cc := s.(*ast.CommClause) + if !check.isTerminatingList(cc.Body, "") || hasBreakList(cc.Body, label, true) { + return false + } + + } + return true + + case *ast.ForStmt: + if s.Cond == nil && !hasBreak(s.Body, label, true) { + return true + } + } + + return false +} + +func (check *Checker) isTerminatingList(list []ast.Stmt, label string) bool { + n := len(list) + return n > 0 && check.isTerminating(list[n-1], label) +} + +func (check *Checker) isTerminatingSwitch(body *ast.BlockStmt, label string) bool { + hasDefault := false + for _, s := range body.List { + cc := s.(*ast.CaseClause) + if cc.List == nil { + hasDefault = true + } + if !check.isTerminatingList(cc.Body, "") || hasBreakList(cc.Body, label, true) { + return false + } + } + return hasDefault +} + +// TODO(gri) For nested breakable statements, the current implementation of hasBreak +// will traverse the same subtree repeatedly, once for each label. Replace +// with a single-pass label/break matching phase. + +// hasBreak reports if s is or contains a break statement +// referring to the label-ed statement or implicit-ly the +// closest outer breakable statement. +func hasBreak(s ast.Stmt, label string, implicit bool) bool { + switch s := s.(type) { + default: + unreachable() + + case *ast.BadStmt, *ast.DeclStmt, *ast.EmptyStmt, *ast.ExprStmt, + *ast.SendStmt, *ast.IncDecStmt, *ast.AssignStmt, *ast.GoStmt, + *ast.DeferStmt, *ast.ReturnStmt: + // no chance + + case *ast.LabeledStmt: + return hasBreak(s.Stmt, label, implicit) + + case *ast.BranchStmt: + if s.Tok == token.BREAK { + if s.Label == nil { + return implicit + } + if s.Label.Name == label { + return true + } + } + + case *ast.BlockStmt: + return hasBreakList(s.List, label, implicit) + + case *ast.IfStmt: + if hasBreak(s.Body, label, implicit) || + s.Else != nil && hasBreak(s.Else, label, implicit) { + return true + } + + case *ast.CaseClause: + return hasBreakList(s.Body, label, implicit) + + case *ast.SwitchStmt: + if label != "" && hasBreak(s.Body, label, false) { + return true + } + + case *ast.TypeSwitchStmt: + if label != "" && hasBreak(s.Body, label, false) { + return true + } + + case *ast.CommClause: + return hasBreakList(s.Body, label, implicit) + + case *ast.SelectStmt: + if label != "" && hasBreak(s.Body, label, false) { + return true + } + + case *ast.ForStmt: + if label != "" && hasBreak(s.Body, label, false) { + return true + } + + case *ast.RangeStmt: + if label != "" && hasBreak(s.Body, label, false) { + return true + } + } + + return false +} + +func hasBreakList(list []ast.Stmt, label string, implicit bool) bool { + for _, s := range list { + if hasBreak(s, label, implicit) { + return true + } + } + return false +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/types/scope.go b/Godeps/_workspace/src/golang.org/x/tools/go/types/scope.go new file mode 100644 index 0000000000..3502840225 --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/types/scope.go @@ -0,0 +1,190 @@ +// Copyright 2013 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// This file implements Scopes. + +package types + +import ( + "bytes" + "fmt" + "go/token" + "io" + "sort" + "strings" +) + +// TODO(gri) Provide scopes with a name or other mechanism so that +// objects can use that information for better printing. + +// A Scope maintains a set of objects and links to its containing +// (parent) and contained (children) scopes. Objects may be inserted +// and looked up by name. The zero value for Scope is a ready-to-use +// empty scope. +type Scope struct { + parent *Scope + children []*Scope + elems map[string]Object // lazily allocated + pos, end token.Pos // scope extent; may be invalid + comment string // for debugging only +} + +// NewScope returns a new, empty scope contained in the given parent +// scope, if any. The comment is for debugging only. +func NewScope(parent *Scope, pos, end token.Pos, comment string) *Scope { + s := &Scope{parent, nil, nil, pos, end, comment} + // don't add children to Universe scope! + if parent != nil && parent != Universe { + parent.children = append(parent.children, s) + } + return s +} + +// Parent returns the scope's containing (parent) scope. +func (s *Scope) Parent() *Scope { return s.parent } + +// Len() returns the number of scope elements. +func (s *Scope) Len() int { return len(s.elems) } + +// Names returns the scope's element names in sorted order. +func (s *Scope) Names() []string { + names := make([]string, len(s.elems)) + i := 0 + for name := range s.elems { + names[i] = name + i++ + } + sort.Strings(names) + return names +} + +// NumChildren() returns the number of scopes nested in s. +func (s *Scope) NumChildren() int { return len(s.children) } + +// Child returns the i'th child scope for 0 <= i < NumChildren(). +func (s *Scope) Child(i int) *Scope { return s.children[i] } + +// Lookup returns the object in scope s with the given name if such an +// object exists; otherwise the result is nil. +func (s *Scope) Lookup(name string) Object { + return s.elems[name] +} + +// LookupParent follows the parent chain of scopes starting with s until +// it finds a scope where Lookup(name) returns a non-nil object, and then +// returns that scope and object. If a valid position pos is provided, +// only objects that were declared at or before pos are considered. +// If no such scope and object exists, the result is (nil, nil). +// +// Note that obj.Parent() may be different from the returned scope if the +// object was inserted into the scope and already had a parent at that +// time (see Insert, below). This can only happen for dot-imported objects +// whose scope is the scope of the package that exported them. +func (s *Scope) LookupParent(name string, pos token.Pos) (*Scope, Object) { + for ; s != nil; s = s.parent { + if obj := s.elems[name]; obj != nil && (!pos.IsValid() || obj.scopePos() <= pos) { + return s, obj + } + } + return nil, nil +} + +// Insert attempts to insert an object obj into scope s. +// If s already contains an alternative object alt with +// the same name, Insert leaves s unchanged and returns alt. +// Otherwise it inserts obj, sets the object's parent scope +// if not already set, and returns nil. +func (s *Scope) Insert(obj Object) Object { + name := obj.Name() + if alt := s.elems[name]; alt != nil { + return alt + } + if s.elems == nil { + s.elems = make(map[string]Object) + } + s.elems[name] = obj + if obj.Parent() == nil { + obj.setParent(s) + } + return nil +} + +// Pos and End describe the scope's source code extent [pos, end). +// The results are guaranteed to be valid only if the type-checked +// AST has complete position information. The extent is undefined +// for Universe and package scopes. +func (s *Scope) Pos() token.Pos { return s.pos } +func (s *Scope) End() token.Pos { return s.end } + +// Contains returns true if pos is within the scope's extent. +// The result is guaranteed to be valid only if the type-checked +// AST has complete position information. +func (s *Scope) Contains(pos token.Pos) bool { + return s.pos <= pos && pos < s.end +} + +// Innermost returns the innermost (child) scope containing +// pos. If pos is not within any scope, the result is nil. +// The result is also nil for the Universe scope. +// The result is guaranteed to be valid only if the type-checked +// AST has complete position information. +func (s *Scope) Innermost(pos token.Pos) *Scope { + // Package scopes do not have extents since they may be + // discontiguous, so iterate over the package's files. + if s.parent == Universe { + for _, s := range s.children { + if inner := s.Innermost(pos); inner != nil { + return inner + } + } + } + + if s.Contains(pos) { + for _, s := range s.children { + if s.Contains(pos) { + return s.Innermost(pos) + } + } + return s + } + return nil +} + +// WriteTo writes a string representation of the scope to w, +// with the scope elements sorted by name. +// The level of indentation is controlled by n >= 0, with +// n == 0 for no indentation. +// If recurse is set, it also writes nested (children) scopes. +func (s *Scope) WriteTo(w io.Writer, n int, recurse bool) { + const ind = ". " + indn := strings.Repeat(ind, n) + + fmt.Fprintf(w, "%s%s scope %p {", indn, s.comment, s) + if len(s.elems) == 0 { + fmt.Fprintf(w, "}\n") + return + } + + fmt.Fprintln(w) + indn1 := indn + ind + for _, name := range s.Names() { + fmt.Fprintf(w, "%s%s\n", indn1, s.elems[name]) + } + + if recurse { + for _, s := range s.children { + fmt.Fprintln(w) + s.WriteTo(w, n+1, recurse) + } + } + + fmt.Fprintf(w, "%s}", indn) +} + +// String returns a string representation of the scope, for debugging. +func (s *Scope) String() string { + var buf bytes.Buffer + s.WriteTo(&buf, 0, false) + return buf.String() +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/types/selection.go b/Godeps/_workspace/src/golang.org/x/tools/go/types/selection.go new file mode 100644 index 0000000000..124e0d39f0 --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/types/selection.go @@ -0,0 +1,143 @@ +// Copyright 2013 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// This file implements Selections. + +package types + +import ( + "bytes" + "fmt" +) + +// SelectionKind describes the kind of a selector expression x.f +// (excluding qualified identifiers). +type SelectionKind int + +const ( + FieldVal SelectionKind = iota // x.f is a struct field selector + MethodVal // x.f is a method selector + MethodExpr // x.f is a method expression +) + +// A Selection describes a selector expression x.f. +// For the declarations: +// +// type T struct{ x int; E } +// type E struct{} +// func (e E) m() {} +// var p *T +// +// the following relations exist: +// +// Selector Kind Recv Obj Type Index Indirect +// +// p.x FieldVal T x int {0} true +// p.m MethodVal *T m func (e *T) m() {1, 0} true +// T.m MethodExpr T m func m(_ T) {1, 0} false +// +type Selection struct { + kind SelectionKind + recv Type // type of x + obj Object // object denoted by x.f + index []int // path from x to x.f + indirect bool // set if there was any pointer indirection on the path +} + +// Kind returns the selection kind. +func (s *Selection) Kind() SelectionKind { return s.kind } + +// Recv returns the type of x in x.f. +func (s *Selection) Recv() Type { return s.recv } + +// Obj returns the object denoted by x.f; a *Var for +// a field selection, and a *Func in all other cases. +func (s *Selection) Obj() Object { return s.obj } + +// Type returns the type of x.f, which may be different from the type of f. +// See Selection for more information. +func (s *Selection) Type() Type { + switch s.kind { + case MethodVal: + // The type of x.f is a method with its receiver type set + // to the type of x. + sig := *s.obj.(*Func).typ.(*Signature) + recv := *sig.recv + recv.typ = s.recv + sig.recv = &recv + return &sig + + case MethodExpr: + // The type of x.f is a function (without receiver) + // and an additional first argument with the same type as x. + // TODO(gri) Similar code is already in call.go - factor! + // TODO(gri) Compute this eagerly to avoid allocations. + sig := *s.obj.(*Func).typ.(*Signature) + arg0 := *sig.recv + sig.recv = nil + arg0.typ = s.recv + var params []*Var + if sig.params != nil { + params = sig.params.vars + } + sig.params = NewTuple(append([]*Var{&arg0}, params...)...) + return &sig + } + + // In all other cases, the type of x.f is the type of x. + return s.obj.Type() +} + +// Index describes the path from x to f in x.f. +// The last index entry is the field or method index of the type declaring f; +// either: +// +// 1) the list of declared methods of a named type; or +// 2) the list of methods of an interface type; or +// 3) the list of fields of a struct type. +// +// The earlier index entries are the indices of the embedded fields implicitly +// traversed to get from (the type of) x to f, starting at embedding depth 0. +func (s *Selection) Index() []int { return s.index } + +// Indirect reports whether any pointer indirection was required to get from +// x to f in x.f. +func (s *Selection) Indirect() bool { return s.indirect } + +func (s *Selection) String() string { return SelectionString(s, nil) } + +// SelectionString returns the string form of s. +// The Qualifier controls the printing of +// package-level objects, and may be nil. +// +// Examples: +// "field (T) f int" +// "method (T) f(X) Y" +// "method expr (T) f(X) Y" +// +func SelectionString(s *Selection, qf Qualifier) string { + var k string + switch s.kind { + case FieldVal: + k = "field " + case MethodVal: + k = "method " + case MethodExpr: + k = "method expr " + default: + unreachable() + } + var buf bytes.Buffer + buf.WriteString(k) + buf.WriteByte('(') + WriteType(&buf, s.Recv(), qf) + fmt.Fprintf(&buf, ") %s", s.obj.Name()) + if T := s.Type(); s.kind == FieldVal { + buf.WriteByte(' ') + WriteType(&buf, T, qf) + } else { + WriteSignature(&buf, T.(*Signature), qf) + } + return buf.String() +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/types/self_test.go b/Godeps/_workspace/src/golang.org/x/tools/go/types/self_test.go new file mode 100644 index 0000000000..01d12c71a0 --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/types/self_test.go @@ -0,0 +1,101 @@ +// Copyright 2013 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package types_test + +import ( + "flag" + "fmt" + "go/ast" + "go/parser" + "go/token" + "path/filepath" + "testing" + "time" + + _ "golang.org/x/tools/go/gcimporter" + . "golang.org/x/tools/go/types" +) + +var benchmark = flag.Bool("b", false, "run benchmarks") + +func TestSelf(t *testing.T) { + fset := token.NewFileSet() + files, err := pkgFiles(fset, ".") + if err != nil { + t.Fatal(err) + } + + _, err = Check("go/types", fset, files) + if err != nil { + // Importing go.tools/go/exact doensn't work in the + // build dashboard environment. Don't report an error + // for now so that the build remains green. + // TODO(gri) fix this + t.Log(err) // replace w/ t.Fatal eventually + return + } +} + +func TestBenchmark(t *testing.T) { + if !*benchmark { + return + } + + // We're not using testing's benchmarking mechanism directly + // because we want custom output. + + for _, p := range []string{"types", "exact", "gcimporter"} { + path := filepath.Join("..", p) + runbench(t, path, false) + runbench(t, path, true) + fmt.Println() + } +} + +func runbench(t *testing.T, path string, ignoreFuncBodies bool) { + fset := token.NewFileSet() + files, err := pkgFiles(fset, path) + if err != nil { + t.Fatal(err) + } + + b := testing.Benchmark(func(b *testing.B) { + for i := 0; i < b.N; i++ { + conf := Config{IgnoreFuncBodies: ignoreFuncBodies} + conf.Check(path, fset, files, nil) + } + }) + + // determine line count + lines := 0 + fset.Iterate(func(f *token.File) bool { + lines += f.LineCount() + return true + }) + + d := time.Duration(b.NsPerOp()) + fmt.Printf( + "%s: %s for %d lines (%d lines/s), ignoreFuncBodies = %v\n", + filepath.Base(path), d, lines, int64(float64(lines)/d.Seconds()), ignoreFuncBodies, + ) +} + +func pkgFiles(fset *token.FileSet, path string) ([]*ast.File, error) { + filenames, err := pkgFilenames(path) // from stdlib_test.go + if err != nil { + return nil, err + } + + var files []*ast.File + for _, filename := range filenames { + file, err := parser.ParseFile(fset, filename, nil, 0) + if err != nil { + return nil, err + } + files = append(files, file) + } + + return files, nil +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/types/sizes.go b/Godeps/_workspace/src/golang.org/x/tools/go/types/sizes.go new file mode 100644 index 0000000000..56fb310c29 --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/types/sizes.go @@ -0,0 +1,211 @@ +// Copyright 2013 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// This file implements Sizes. + +package types + +// Sizes defines the sizing functions for package unsafe. +type Sizes interface { + // Alignof returns the alignment of a variable of type T. + // Alignof must implement the alignment guarantees required by the spec. + Alignof(T Type) int64 + + // Offsetsof returns the offsets of the given struct fields, in bytes. + // Offsetsof must implement the offset guarantees required by the spec. + Offsetsof(fields []*Var) []int64 + + // Sizeof returns the size of a variable of type T. + // Sizeof must implement the size guarantees required by the spec. + Sizeof(T Type) int64 +} + +// StdSizes is a convenience type for creating commonly used Sizes. +// It makes the following simplifying assumptions: +// +// - The size of explicitly sized basic types (int16, etc.) is the +// specified size. +// - The size of strings and interfaces is 2*WordSize. +// - The size of slices is 3*WordSize. +// - The size of an array of n elements corresponds to the size of +// a struct of n consecutive fields of the array's element type. +// - The size of a struct is the offset of the last field plus that +// field's size. As with all element types, if the struct is used +// in an array its size must first be aligned to a multiple of the +// struct's alignment. +// - All other types have size WordSize. +// - Arrays and structs are aligned per spec definition; all other +// types are naturally aligned with a maximum alignment MaxAlign. +// +// *StdSizes implements Sizes. +// +type StdSizes struct { + WordSize int64 // word size in bytes - must be >= 4 (32bits) + MaxAlign int64 // maximum alignment in bytes - must be >= 1 +} + +func (s *StdSizes) Alignof(T Type) int64 { + // For arrays and structs, alignment is defined in terms + // of alignment of the elements and fields, respectively. + switch t := T.Underlying().(type) { + case *Array: + // spec: "For a variable x of array type: unsafe.Alignof(x) + // is the same as unsafe.Alignof(x[0]), but at least 1." + return s.Alignof(t.elem) + case *Struct: + // spec: "For a variable x of struct type: unsafe.Alignof(x) + // is the largest of the values unsafe.Alignof(x.f) for each + // field f of x, but at least 1." + max := int64(1) + for _, f := range t.fields { + if a := s.Alignof(f.typ); a > max { + max = a + } + } + return max + } + a := s.Sizeof(T) // may be 0 + // spec: "For a variable x of any type: unsafe.Alignof(x) is at least 1." + if a < 1 { + return 1 + } + if a > s.MaxAlign { + return s.MaxAlign + } + return a +} + +func (s *StdSizes) Offsetsof(fields []*Var) []int64 { + offsets := make([]int64, len(fields)) + var o int64 + for i, f := range fields { + a := s.Alignof(f.typ) + o = align(o, a) + offsets[i] = o + o += s.Sizeof(f.typ) + } + return offsets +} + +var basicSizes = [...]byte{ + Bool: 1, + Int8: 1, + Int16: 2, + Int32: 4, + Int64: 8, + Uint8: 1, + Uint16: 2, + Uint32: 4, + Uint64: 8, + Float32: 4, + Float64: 8, + Complex64: 8, + Complex128: 16, +} + +func (s *StdSizes) Sizeof(T Type) int64 { + switch t := T.Underlying().(type) { + case *Basic: + assert(isTyped(T)) + k := t.kind + if int(k) < len(basicSizes) { + if s := basicSizes[k]; s > 0 { + return int64(s) + } + } + if k == String { + return s.WordSize * 2 + } + case *Array: + n := t.len + if n == 0 { + return 0 + } + a := s.Alignof(t.elem) + z := s.Sizeof(t.elem) + return align(z, a)*(n-1) + z + case *Slice: + return s.WordSize * 3 + case *Struct: + n := t.NumFields() + if n == 0 { + return 0 + } + offsets := t.offsets + if t.offsets == nil { + // compute offsets on demand + offsets = s.Offsetsof(t.fields) + t.offsets = offsets + } + return offsets[n-1] + s.Sizeof(t.fields[n-1].typ) + case *Interface: + return s.WordSize * 2 + } + return s.WordSize // catch-all +} + +// stdSizes is used if Config.Sizes == nil. +var stdSizes = StdSizes{8, 8} + +func (conf *Config) alignof(T Type) int64 { + if s := conf.Sizes; s != nil { + if a := s.Alignof(T); a >= 1 { + return a + } + panic("Config.Sizes.Alignof returned an alignment < 1") + } + return stdSizes.Alignof(T) +} + +func (conf *Config) offsetsof(T *Struct) []int64 { + offsets := T.offsets + if offsets == nil && T.NumFields() > 0 { + // compute offsets on demand + if s := conf.Sizes; s != nil { + offsets = s.Offsetsof(T.fields) + // sanity checks + if len(offsets) != T.NumFields() { + panic("Config.Sizes.Offsetsof returned the wrong number of offsets") + } + for _, o := range offsets { + if o < 0 { + panic("Config.Sizes.Offsetsof returned an offset < 0") + } + } + } else { + offsets = stdSizes.Offsetsof(T.fields) + } + T.offsets = offsets + } + return offsets +} + +// offsetof returns the offset of the field specified via +// the index sequence relative to typ. All embedded fields +// must be structs (rather than pointer to structs). +func (conf *Config) offsetof(typ Type, index []int) int64 { + var o int64 + for _, i := range index { + s := typ.Underlying().(*Struct) + o += conf.offsetsof(s)[i] + typ = s.fields[i].typ + } + return o +} + +func (conf *Config) sizeof(T Type) int64 { + if s := conf.Sizes; s != nil { + if z := s.Sizeof(T); z >= 0 { + return z + } + panic("Config.Sizes.Sizeof returned a size < 0") + } + return stdSizes.Sizeof(T) +} + +// align returns the smallest y >= x such that y % a == 0. +func align(x, a int64) int64 { + y := x + a - 1 + return y - y%a +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/types/stdlib_test.go b/Godeps/_workspace/src/golang.org/x/tools/go/types/stdlib_test.go new file mode 100644 index 0000000000..d6aa82ac53 --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/types/stdlib_test.go @@ -0,0 +1,270 @@ +// Copyright 2013 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// This file tests types.Check by using it to +// typecheck the standard library and tests. + +package types_test + +import ( + "fmt" + "go/ast" + "go/build" + "go/parser" + "go/scanner" + "go/token" + "io/ioutil" + "os" + "path/filepath" + "runtime" + "strings" + "testing" + "time" + + _ "golang.org/x/tools/go/gcimporter" + . "golang.org/x/tools/go/types" +) + +var ( + pkgCount int // number of packages processed + start = time.Now() +) + +func TestStdlib(t *testing.T) { + skipSpecialPlatforms(t) + + walkDirs(t, filepath.Join(runtime.GOROOT(), "src")) + if testing.Verbose() { + fmt.Println(pkgCount, "packages typechecked in", time.Since(start)) + } +} + +// firstComment returns the contents of the first comment in +// the given file, assuming there's one within the first KB. +func firstComment(filename string) string { + f, err := os.Open(filename) + if err != nil { + return "" + } + defer f.Close() + + var src [1 << 10]byte // read at most 1KB + n, _ := f.Read(src[:]) + + var s scanner.Scanner + s.Init(fset.AddFile("", fset.Base(), n), src[:n], nil, scanner.ScanComments) + for { + _, tok, lit := s.Scan() + switch tok { + case token.COMMENT: + // remove trailing */ of multi-line comment + if lit[1] == '*' { + lit = lit[:len(lit)-2] + } + return strings.TrimSpace(lit[2:]) + case token.EOF: + return "" + } + } +} + +func testTestDir(t *testing.T, path string, ignore ...string) { + files, err := ioutil.ReadDir(path) + if err != nil { + t.Fatal(err) + } + + excluded := make(map[string]bool) + for _, filename := range ignore { + excluded[filename] = true + } + + fset := token.NewFileSet() + for _, f := range files { + // filter directory contents + if f.IsDir() || !strings.HasSuffix(f.Name(), ".go") || excluded[f.Name()] { + continue + } + + // get per-file instructions + expectErrors := false + filename := filepath.Join(path, f.Name()) + if cmd := firstComment(filename); cmd != "" { + switch cmd { + case "skip", "compiledir": + continue // ignore this file + case "errorcheck": + expectErrors = true + } + } + + // parse and type-check file + file, err := parser.ParseFile(fset, filename, nil, 0) + if err == nil { + _, err = Check(filename, fset, []*ast.File{file}) + } + + if expectErrors { + if err == nil { + t.Errorf("expected errors but found none in %s", filename) + } + } else { + if err != nil { + t.Error(err) + } + } + } +} + +func TestStdTest(t *testing.T) { + skipSpecialPlatforms(t) + + // test/recover4.go is only built for Linux and Darwin. + // TODO(gri) Remove once tests consider +build tags (issue 10370). + if runtime.GOOS != "linux" && runtime.GOOS != "darwin" { + return + } + + testTestDir(t, filepath.Join(runtime.GOROOT(), "test"), + "cmplxdivide.go", // also needs file cmplxdivide1.go - ignore + "sigchld.go", // don't work on Windows; testTestDir should consult build tags + ) +} + +func TestStdFixed(t *testing.T) { + skipSpecialPlatforms(t) + + testTestDir(t, filepath.Join(runtime.GOROOT(), "test", "fixedbugs"), + "bug248.go", "bug302.go", "bug369.go", // complex test instructions - ignore + "bug459.go", // possibly incorrect test - see issue 6703 (pending spec clarification) + "issue3924.go", // possibly incorrect test - see issue 6671 (pending spec clarification) + "issue6889.go", // gc-specific test + "issue7746.go", // large constants - consumes too much memory + "issue11326.go", // large constants + "issue11326b.go", // large constants + ) +} + +func TestStdKen(t *testing.T) { + skipSpecialPlatforms(t) + + testTestDir(t, filepath.Join(runtime.GOROOT(), "test", "ken")) +} + +// Package paths of excluded packages. +var excluded = map[string]bool{ + "builtin": true, +} + +// typecheck typechecks the given package files. +func typecheck(t *testing.T, path string, filenames []string) { + fset := token.NewFileSet() + + // parse package files + var files []*ast.File + for _, filename := range filenames { + file, err := parser.ParseFile(fset, filename, nil, parser.AllErrors) + if err != nil { + // the parser error may be a list of individual errors; report them all + if list, ok := err.(scanner.ErrorList); ok { + for _, err := range list { + t.Error(err) + } + return + } + t.Error(err) + return + } + + if testing.Verbose() { + if len(files) == 0 { + fmt.Println("package", file.Name.Name) + } + fmt.Println("\t", filename) + } + + files = append(files, file) + } + + // typecheck package files + var conf Config + conf.Error = func(err error) { t.Error(err) } + info := Info{Uses: make(map[*ast.Ident]Object)} + conf.Check(path, fset, files, &info) + pkgCount++ + + // Perform checks of API invariants. + + // All Objects have a package, except predeclared ones. + errorError := Universe.Lookup("error").Type().Underlying().(*Interface).ExplicitMethod(0) // (error).Error + for id, obj := range info.Uses { + predeclared := obj == Universe.Lookup(obj.Name()) || obj == errorError + if predeclared == (obj.Pkg() != nil) { + posn := fset.Position(id.Pos()) + if predeclared { + t.Errorf("%s: predeclared object with package: %s", posn, obj) + } else { + t.Errorf("%s: user-defined object without package: %s", posn, obj) + } + } + } +} + +// pkgFilenames returns the list of package filenames for the given directory. +func pkgFilenames(dir string) ([]string, error) { + ctxt := build.Default + ctxt.CgoEnabled = false + pkg, err := ctxt.ImportDir(dir, 0) + if err != nil { + if _, nogo := err.(*build.NoGoError); nogo { + return nil, nil // no *.go files, not an error + } + return nil, err + } + if excluded[pkg.ImportPath] { + return nil, nil + } + var filenames []string + for _, name := range pkg.GoFiles { + filenames = append(filenames, filepath.Join(pkg.Dir, name)) + } + for _, name := range pkg.TestGoFiles { + filenames = append(filenames, filepath.Join(pkg.Dir, name)) + } + return filenames, nil +} + +// Note: Could use filepath.Walk instead of walkDirs but that wouldn't +// necessarily be shorter or clearer after adding the code to +// terminate early for -short tests. + +func walkDirs(t *testing.T, dir string) { + // limit run time for short tests + if testing.Short() && time.Since(start) >= 750*time.Millisecond { + return + } + + fis, err := ioutil.ReadDir(dir) + if err != nil { + t.Error(err) + return + } + + // typecheck package in directory + files, err := pkgFilenames(dir) + if err != nil { + t.Error(err) + return + } + if files != nil { + typecheck(t, dir, files) + } + + // traverse subdirectories, but don't walk into testdata + for _, fi := range fis { + if fi.IsDir() && fi.Name() != "testdata" { + walkDirs(t, filepath.Join(dir, fi.Name())) + } + } +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/types/stmt.go b/Godeps/_workspace/src/golang.org/x/tools/go/types/stmt.go new file mode 100644 index 0000000000..eeb2c31730 --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/types/stmt.go @@ -0,0 +1,745 @@ +// Copyright 2012 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// This file implements typechecking of statements. + +package types + +import ( + "fmt" + "go/ast" + "go/token" + + "golang.org/x/tools/go/exact" +) + +func (check *Checker) funcBody(decl *declInfo, name string, sig *Signature, body *ast.BlockStmt) { + if trace { + if name == "" { + name = "" + } + fmt.Printf("--- %s: %s {\n", name, sig) + defer fmt.Println("--- ") + } + + // set function scope extent + sig.scope.pos = body.Pos() + sig.scope.end = body.End() + + // save/restore current context and setup function context + // (and use 0 indentation at function start) + defer func(ctxt context, indent int) { + check.context = ctxt + check.indent = indent + }(check.context, check.indent) + check.context = context{ + decl: decl, + scope: sig.scope, + sig: sig, + } + check.indent = 0 + + check.stmtList(0, body.List) + + if check.hasLabel { + check.labels(body) + } + + if sig.results.Len() > 0 && !check.isTerminating(body, "") { + check.error(body.Rbrace, "missing return") + } + + // spec: "Implementation restriction: A compiler may make it illegal to + // declare a variable inside a function body if the variable is never used." + // (One could check each scope after use, but that distributes this check + // over several places because CloseScope is not always called explicitly.) + check.usage(sig.scope) +} + +func (check *Checker) usage(scope *Scope) { + for _, obj := range scope.elems { + if v, _ := obj.(*Var); v != nil && !v.used { + check.softErrorf(v.pos, "%s declared but not used", v.name) + } + } + for _, scope := range scope.children { + check.usage(scope) + } +} + +// stmtContext is a bitset describing which +// control-flow statements are permissible. +type stmtContext uint + +const ( + breakOk stmtContext = 1 << iota + continueOk + fallthroughOk +) + +func (check *Checker) simpleStmt(s ast.Stmt) { + if s != nil { + check.stmt(0, s) + } +} + +func (check *Checker) stmtList(ctxt stmtContext, list []ast.Stmt) { + ok := ctxt&fallthroughOk != 0 + inner := ctxt &^ fallthroughOk + for i, s := range list { + inner := inner + if ok && i+1 == len(list) { + inner |= fallthroughOk + } + check.stmt(inner, s) + } +} + +func (check *Checker) multipleDefaults(list []ast.Stmt) { + var first ast.Stmt + for _, s := range list { + var d ast.Stmt + switch c := s.(type) { + case *ast.CaseClause: + if len(c.List) == 0 { + d = s + } + case *ast.CommClause: + if c.Comm == nil { + d = s + } + default: + check.invalidAST(s.Pos(), "case/communication clause expected") + } + if d != nil { + if first != nil { + check.errorf(d.Pos(), "multiple defaults (first at %s)", first.Pos()) + } else { + first = d + } + } + } +} + +func (check *Checker) openScope(s ast.Stmt, comment string) { + scope := NewScope(check.scope, s.Pos(), s.End(), comment) + check.recordScope(s, scope) + check.scope = scope +} + +func (check *Checker) closeScope() { + check.scope = check.scope.Parent() +} + +func assignOp(op token.Token) token.Token { + // token_test.go verifies the token ordering this function relies on + if token.ADD_ASSIGN <= op && op <= token.AND_NOT_ASSIGN { + return op + (token.ADD - token.ADD_ASSIGN) + } + return token.ILLEGAL +} + +func (check *Checker) suspendedCall(keyword string, call *ast.CallExpr) { + var x operand + var msg string + switch check.rawExpr(&x, call, nil) { + case conversion: + msg = "requires function call, not conversion" + case expression: + msg = "discards result of" + case statement: + return + default: + unreachable() + } + check.errorf(x.pos(), "%s %s %s", keyword, msg, &x) +} + +func (check *Checker) caseValues(x operand /* copy argument (not *operand!) */, values []ast.Expr) { + // No duplicate checking for now. See issue 4524. + for _, e := range values { + var y operand + check.expr(&y, e) + if y.mode == invalid { + return + } + // TODO(gri) The convertUntyped call pair below appears in other places. Factor! + // Order matters: By comparing y against x, error positions are at the case values. + check.convertUntyped(&y, x.typ) + if y.mode == invalid { + return + } + check.convertUntyped(&x, y.typ) + if x.mode == invalid { + return + } + check.comparison(&y, &x, token.EQL) + } +} + +func (check *Checker) caseTypes(x *operand, xtyp *Interface, types []ast.Expr, seen map[Type]token.Pos) (T Type) { +L: + for _, e := range types { + T = check.typOrNil(e) + if T == Typ[Invalid] { + continue + } + // complain about duplicate types + // TODO(gri) use a type hash to avoid quadratic algorithm + for t, pos := range seen { + if T == nil && t == nil || T != nil && t != nil && Identical(T, t) { + // talk about "case" rather than "type" because of nil case + check.error(e.Pos(), "duplicate case in type switch") + check.errorf(pos, "\tprevious case %s", T) // secondary error, \t indented + continue L + } + } + seen[T] = e.Pos() + if T != nil { + check.typeAssertion(e.Pos(), x, xtyp, T) + } + } + return +} + +// stmt typechecks statement s. +func (check *Checker) stmt(ctxt stmtContext, s ast.Stmt) { + // statements cannot use iota in general + // (constant declarations set it explicitly) + assert(check.iota == nil) + + // statements must end with the same top scope as they started with + if debug { + defer func(scope *Scope) { + // don't check if code is panicking + if p := recover(); p != nil { + panic(p) + } + assert(scope == check.scope) + }(check.scope) + } + + inner := ctxt &^ fallthroughOk + switch s := s.(type) { + case *ast.BadStmt, *ast.EmptyStmt: + // ignore + + case *ast.DeclStmt: + check.declStmt(s.Decl) + + case *ast.LabeledStmt: + check.hasLabel = true + check.stmt(ctxt, s.Stmt) + + case *ast.ExprStmt: + // spec: "With the exception of specific built-in functions, + // function and method calls and receive operations can appear + // in statement context. Such statements may be parenthesized." + var x operand + kind := check.rawExpr(&x, s.X, nil) + var msg string + switch x.mode { + default: + if kind == statement { + return + } + msg = "is not used" + case builtin: + msg = "must be called" + case typexpr: + msg = "is not an expression" + } + check.errorf(x.pos(), "%s %s", &x, msg) + + case *ast.SendStmt: + var ch, x operand + check.expr(&ch, s.Chan) + check.expr(&x, s.Value) + if ch.mode == invalid || x.mode == invalid { + return + } + if tch, ok := ch.typ.Underlying().(*Chan); !ok || tch.dir == RecvOnly || !check.assignment(&x, tch.elem) { + if x.mode != invalid { + check.invalidOp(ch.pos(), "cannot send %s to channel %s", &x, &ch) + } + } + + case *ast.IncDecStmt: + var op token.Token + switch s.Tok { + case token.INC: + op = token.ADD + case token.DEC: + op = token.SUB + default: + check.invalidAST(s.TokPos, "unknown inc/dec operation %s", s.Tok) + return + } + var x operand + Y := &ast.BasicLit{ValuePos: s.X.Pos(), Kind: token.INT, Value: "1"} // use x's position + check.binary(&x, nil, s.X, Y, op) + if x.mode == invalid { + return + } + check.assignVar(s.X, &x) + + case *ast.AssignStmt: + switch s.Tok { + case token.ASSIGN, token.DEFINE: + if len(s.Lhs) == 0 { + check.invalidAST(s.Pos(), "missing lhs in assignment") + return + } + if s.Tok == token.DEFINE { + check.shortVarDecl(s.TokPos, s.Lhs, s.Rhs) + } else { + // regular assignment + check.assignVars(s.Lhs, s.Rhs) + } + + default: + // assignment operations + if len(s.Lhs) != 1 || len(s.Rhs) != 1 { + check.errorf(s.TokPos, "assignment operation %s requires single-valued expressions", s.Tok) + return + } + op := assignOp(s.Tok) + if op == token.ILLEGAL { + check.invalidAST(s.TokPos, "unknown assignment operation %s", s.Tok) + return + } + var x operand + check.binary(&x, nil, s.Lhs[0], s.Rhs[0], op) + if x.mode == invalid { + return + } + check.assignVar(s.Lhs[0], &x) + } + + case *ast.GoStmt: + check.suspendedCall("go", s.Call) + + case *ast.DeferStmt: + check.suspendedCall("defer", s.Call) + + case *ast.ReturnStmt: + res := check.sig.results + if res.Len() > 0 { + // function returns results + // (if one, say the first, result parameter is named, all of them are named) + if len(s.Results) == 0 && res.vars[0].name != "" { + // spec: "Implementation restriction: A compiler may disallow an empty expression + // list in a "return" statement if a different entity (constant, type, or variable) + // with the same name as a result parameter is in scope at the place of the return." + for _, obj := range res.vars { + if _, alt := check.scope.LookupParent(obj.name, check.pos); alt != nil && alt != obj { + check.errorf(s.Pos(), "result parameter %s not in scope at return", obj.name) + check.errorf(alt.Pos(), "\tinner declaration of %s", obj) + // ok to continue + } + } + } else { + // return has results or result parameters are unnamed + check.initVars(res.vars, s.Results, s.Return) + } + } else if len(s.Results) > 0 { + check.error(s.Results[0].Pos(), "no result values expected") + check.use(s.Results...) + } + + case *ast.BranchStmt: + if s.Label != nil { + check.hasLabel = true + return // checked in 2nd pass (check.labels) + } + switch s.Tok { + case token.BREAK: + if ctxt&breakOk == 0 { + check.error(s.Pos(), "break not in for, switch, or select statement") + } + case token.CONTINUE: + if ctxt&continueOk == 0 { + check.error(s.Pos(), "continue not in for statement") + } + case token.FALLTHROUGH: + if ctxt&fallthroughOk == 0 { + check.error(s.Pos(), "fallthrough statement out of place") + } + default: + check.invalidAST(s.Pos(), "branch statement: %s", s.Tok) + } + + case *ast.BlockStmt: + check.openScope(s, "block") + defer check.closeScope() + + check.stmtList(inner, s.List) + + case *ast.IfStmt: + check.openScope(s, "if") + defer check.closeScope() + + check.simpleStmt(s.Init) + var x operand + check.expr(&x, s.Cond) + if x.mode != invalid && !isBoolean(x.typ) { + check.error(s.Cond.Pos(), "non-boolean condition in if statement") + } + check.stmt(inner, s.Body) + if s.Else != nil { + check.stmt(inner, s.Else) + } + + case *ast.SwitchStmt: + inner |= breakOk + check.openScope(s, "switch") + defer check.closeScope() + + check.simpleStmt(s.Init) + var x operand + if s.Tag != nil { + check.expr(&x, s.Tag) + } else { + // spec: "A missing switch expression is + // equivalent to the boolean value true." + x.mode = constant + x.typ = Typ[Bool] + x.val = exact.MakeBool(true) + x.expr = &ast.Ident{NamePos: s.Body.Lbrace, Name: "true"} + } + + check.multipleDefaults(s.Body.List) + + for i, c := range s.Body.List { + clause, _ := c.(*ast.CaseClause) + if clause == nil { + check.invalidAST(c.Pos(), "incorrect expression switch case") + continue + } + if x.mode != invalid { + check.caseValues(x, clause.List) + } + check.openScope(clause, "case") + inner := inner + if i+1 < len(s.Body.List) { + inner |= fallthroughOk + } + check.stmtList(inner, clause.Body) + check.closeScope() + } + + case *ast.TypeSwitchStmt: + inner |= breakOk + check.openScope(s, "type switch") + defer check.closeScope() + + check.simpleStmt(s.Init) + + // A type switch guard must be of the form: + // + // TypeSwitchGuard = [ identifier ":=" ] PrimaryExpr "." "(" "type" ")" . + // + // The parser is checking syntactic correctness; + // remaining syntactic errors are considered AST errors here. + // TODO(gri) better factoring of error handling (invalid ASTs) + // + var lhs *ast.Ident // lhs identifier or nil + var rhs ast.Expr + switch guard := s.Assign.(type) { + case *ast.ExprStmt: + rhs = guard.X + case *ast.AssignStmt: + if len(guard.Lhs) != 1 || guard.Tok != token.DEFINE || len(guard.Rhs) != 1 { + check.invalidAST(s.Pos(), "incorrect form of type switch guard") + return + } + + lhs, _ = guard.Lhs[0].(*ast.Ident) + if lhs == nil { + check.invalidAST(s.Pos(), "incorrect form of type switch guard") + return + } + + if lhs.Name == "_" { + // _ := x.(type) is an invalid short variable declaration + check.softErrorf(lhs.Pos(), "no new variable on left side of :=") + lhs = nil // avoid declared but not used error below + } else { + check.recordDef(lhs, nil) // lhs variable is implicitly declared in each cause clause + } + + rhs = guard.Rhs[0] + + default: + check.invalidAST(s.Pos(), "incorrect form of type switch guard") + return + } + + // rhs must be of the form: expr.(type) and expr must be an interface + expr, _ := rhs.(*ast.TypeAssertExpr) + if expr == nil || expr.Type != nil { + check.invalidAST(s.Pos(), "incorrect form of type switch guard") + return + } + var x operand + check.expr(&x, expr.X) + if x.mode == invalid { + return + } + xtyp, _ := x.typ.Underlying().(*Interface) + if xtyp == nil { + check.errorf(x.pos(), "%s is not an interface", &x) + return + } + + check.multipleDefaults(s.Body.List) + + var lhsVars []*Var // list of implicitly declared lhs variables + seen := make(map[Type]token.Pos) // map of seen types to positions + for _, s := range s.Body.List { + clause, _ := s.(*ast.CaseClause) + if clause == nil { + check.invalidAST(s.Pos(), "incorrect type switch case") + continue + } + // Check each type in this type switch case. + T := check.caseTypes(&x, xtyp, clause.List, seen) + check.openScope(clause, "case") + // If lhs exists, declare a corresponding variable in the case-local scope. + if lhs != nil { + // spec: "The TypeSwitchGuard may include a short variable declaration. + // When that form is used, the variable is declared at the beginning of + // the implicit block in each clause. In clauses with a case listing + // exactly one type, the variable has that type; otherwise, the variable + // has the type of the expression in the TypeSwitchGuard." + if len(clause.List) != 1 || T == nil { + T = x.typ + } + obj := NewVar(lhs.Pos(), check.pkg, lhs.Name, T) + scopePos := clause.End() + if len(clause.Body) > 0 { + scopePos = clause.Body[0].Pos() + } + check.declare(check.scope, nil, obj, scopePos) + check.recordImplicit(clause, obj) + // For the "declared but not used" error, all lhs variables act as + // one; i.e., if any one of them is 'used', all of them are 'used'. + // Collect them for later analysis. + lhsVars = append(lhsVars, obj) + } + check.stmtList(inner, clause.Body) + check.closeScope() + } + + // If lhs exists, we must have at least one lhs variable that was used. + if lhs != nil { + var used bool + for _, v := range lhsVars { + if v.used { + used = true + } + v.used = true // avoid usage error when checking entire function + } + if !used { + check.softErrorf(lhs.Pos(), "%s declared but not used", lhs.Name) + } + } + + case *ast.SelectStmt: + inner |= breakOk + + check.multipleDefaults(s.Body.List) + + for _, s := range s.Body.List { + clause, _ := s.(*ast.CommClause) + if clause == nil { + continue // error reported before + } + + // clause.Comm must be a SendStmt, RecvStmt, or default case + valid := false + var rhs ast.Expr // rhs of RecvStmt, or nil + switch s := clause.Comm.(type) { + case nil, *ast.SendStmt: + valid = true + case *ast.AssignStmt: + if len(s.Rhs) == 1 { + rhs = s.Rhs[0] + } + case *ast.ExprStmt: + rhs = s.X + } + + // if present, rhs must be a receive operation + if rhs != nil { + if x, _ := unparen(rhs).(*ast.UnaryExpr); x != nil && x.Op == token.ARROW { + valid = true + } + } + + if !valid { + check.error(clause.Comm.Pos(), "select case must be send or receive (possibly with assignment)") + continue + } + + check.openScope(s, "case") + if clause.Comm != nil { + check.stmt(inner, clause.Comm) + } + check.stmtList(inner, clause.Body) + check.closeScope() + } + + case *ast.ForStmt: + inner |= breakOk | continueOk + check.openScope(s, "for") + defer check.closeScope() + + check.simpleStmt(s.Init) + if s.Cond != nil { + var x operand + check.expr(&x, s.Cond) + if x.mode != invalid && !isBoolean(x.typ) { + check.error(s.Cond.Pos(), "non-boolean condition in for statement") + } + } + check.simpleStmt(s.Post) + // spec: "The init statement may be a short variable + // declaration, but the post statement must not." + if s, _ := s.Post.(*ast.AssignStmt); s != nil && s.Tok == token.DEFINE { + check.softErrorf(s.Pos(), "cannot declare in post statement") + check.use(s.Lhs...) // avoid follow-up errors + } + check.stmt(inner, s.Body) + + case *ast.RangeStmt: + inner |= breakOk | continueOk + check.openScope(s, "for") + defer check.closeScope() + + // check expression to iterate over + var x operand + check.expr(&x, s.X) + + // determine key/value types + var key, val Type + if x.mode != invalid { + switch typ := x.typ.Underlying().(type) { + case *Basic: + if isString(typ) { + key = Typ[Int] + val = universeRune // use 'rune' name + } + case *Array: + key = Typ[Int] + val = typ.elem + case *Slice: + key = Typ[Int] + val = typ.elem + case *Pointer: + if typ, _ := typ.base.Underlying().(*Array); typ != nil { + key = Typ[Int] + val = typ.elem + } + case *Map: + key = typ.key + val = typ.elem + case *Chan: + key = typ.elem + val = Typ[Invalid] + if typ.dir == SendOnly { + check.errorf(x.pos(), "cannot range over send-only channel %s", &x) + // ok to continue + } + if s.Value != nil { + check.errorf(s.Value.Pos(), "iteration over %s permits only one iteration variable", &x) + // ok to continue + } + } + } + + if key == nil { + check.errorf(x.pos(), "cannot range over %s", &x) + // ok to continue + } + + // check assignment to/declaration of iteration variables + // (irregular assignment, cannot easily map to existing assignment checks) + + // lhs expressions and initialization value (rhs) types + lhs := [2]ast.Expr{s.Key, s.Value} + rhs := [2]Type{key, val} // key, val may be nil + + if s.Tok == token.DEFINE { + // short variable declaration; variable scope starts after the range clause + // (the for loop opens a new scope, so variables on the lhs never redeclare + // previously declared variables) + var vars []*Var + for i, lhs := range lhs { + if lhs == nil { + continue + } + + // determine lhs variable + var obj *Var + if ident, _ := lhs.(*ast.Ident); ident != nil { + // declare new variable + name := ident.Name + obj = NewVar(ident.Pos(), check.pkg, name, nil) + check.recordDef(ident, obj) + // _ variables don't count as new variables + if name != "_" { + vars = append(vars, obj) + } + } else { + check.errorf(lhs.Pos(), "cannot declare %s", lhs) + obj = NewVar(lhs.Pos(), check.pkg, "_", nil) // dummy variable + } + + // initialize lhs variable + if typ := rhs[i]; typ != nil { + x.mode = value + x.expr = lhs // we don't have a better rhs expression to use here + x.typ = typ + check.initVar(obj, &x, false) + } else { + obj.typ = Typ[Invalid] + obj.used = true // don't complain about unused variable + } + } + + // declare variables + if len(vars) > 0 { + for _, obj := range vars { + // spec: "The scope of a constant or variable identifier declared inside + // a function begins at the end of the ConstSpec or VarSpec (ShortVarDecl + // for short variable declarations) and ends at the end of the innermost + // containing block." + scopePos := s.End() + check.declare(check.scope, nil /* recordDef already called */, obj, scopePos) + } + } else { + check.error(s.TokPos, "no new variables on left side of :=") + } + } else { + // ordinary assignment + for i, lhs := range lhs { + if lhs == nil { + continue + } + if typ := rhs[i]; typ != nil { + x.mode = value + x.expr = lhs // we don't have a better rhs expression to use here + x.typ = typ + check.assignVar(lhs, &x) + } + } + } + + check.stmt(inner, s.Body) + + default: + check.error(s.Pos(), "invalid statement") + } +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/types/token_test.go b/Godeps/_workspace/src/golang.org/x/tools/go/types/token_test.go new file mode 100644 index 0000000000..705bb295a1 --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/types/token_test.go @@ -0,0 +1,47 @@ +// Copyright 2013 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// This file checks invariants of token.Token ordering that we rely on +// since package go/token doesn't provide any guarantees at the moment. + +package types + +import ( + "go/token" + "testing" +) + +var assignOps = map[token.Token]token.Token{ + token.ADD_ASSIGN: token.ADD, + token.SUB_ASSIGN: token.SUB, + token.MUL_ASSIGN: token.MUL, + token.QUO_ASSIGN: token.QUO, + token.REM_ASSIGN: token.REM, + token.AND_ASSIGN: token.AND, + token.OR_ASSIGN: token.OR, + token.XOR_ASSIGN: token.XOR, + token.SHL_ASSIGN: token.SHL, + token.SHR_ASSIGN: token.SHR, + token.AND_NOT_ASSIGN: token.AND_NOT, +} + +func TestZeroTok(t *testing.T) { + // zero value for token.Token must be token.ILLEGAL + var zero token.Token + if token.ILLEGAL != zero { + t.Errorf("%s == %d; want 0", token.ILLEGAL, zero) + } +} + +func TestAssignOp(t *testing.T) { + // there are fewer than 256 tokens + for i := 0; i < 256; i++ { + tok := token.Token(i) + got := assignOp(tok) + want := assignOps[tok] + if got != want { + t.Errorf("for assignOp(%s): got %s; want %s", tok, got, want) + } + } +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/types/type.go b/Godeps/_workspace/src/golang.org/x/tools/go/types/type.go new file mode 100644 index 0000000000..1df8b45b28 --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/types/type.go @@ -0,0 +1,454 @@ +// Copyright 2011 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package types + +import "sort" + +// TODO(gri) Revisit factory functions - make sure they have all relevant parameters. + +// A Type represents a type of Go. +// All types implement the Type interface. +type Type interface { + // Underlying returns the underlying type of a type. + Underlying() Type + + // String returns a string representation of a type. + String() string +} + +// BasicKind describes the kind of basic type. +type BasicKind int + +const ( + Invalid BasicKind = iota // type is invalid + + // predeclared types + Bool + Int + Int8 + Int16 + Int32 + Int64 + Uint + Uint8 + Uint16 + Uint32 + Uint64 + Uintptr + Float32 + Float64 + Complex64 + Complex128 + String + UnsafePointer + + // types for untyped values + UntypedBool + UntypedInt + UntypedRune + UntypedFloat + UntypedComplex + UntypedString + UntypedNil + + // aliases + Byte = Uint8 + Rune = Int32 +) + +// BasicInfo is a set of flags describing properties of a basic type. +type BasicInfo int + +// Properties of basic types. +const ( + IsBoolean BasicInfo = 1 << iota + IsInteger + IsUnsigned + IsFloat + IsComplex + IsString + IsUntyped + + IsOrdered = IsInteger | IsFloat | IsString + IsNumeric = IsInteger | IsFloat | IsComplex + IsConstType = IsBoolean | IsNumeric | IsString +) + +// A Basic represents a basic type. +type Basic struct { + kind BasicKind + info BasicInfo + name string +} + +// Kind returns the kind of basic type b. +func (b *Basic) Kind() BasicKind { return b.kind } + +// Info returns information about properties of basic type b. +func (b *Basic) Info() BasicInfo { return b.info } + +// Name returns the name of basic type b. +func (b *Basic) Name() string { return b.name } + +// An Array represents an array type. +type Array struct { + len int64 + elem Type +} + +// NewArray returns a new array type for the given element type and length. +func NewArray(elem Type, len int64) *Array { return &Array{len, elem} } + +// Len returns the length of array a. +func (a *Array) Len() int64 { return a.len } + +// Elem returns element type of array a. +func (a *Array) Elem() Type { return a.elem } + +// A Slice represents a slice type. +type Slice struct { + elem Type +} + +// NewSlice returns a new slice type for the given element type. +func NewSlice(elem Type) *Slice { return &Slice{elem} } + +// Elem returns the element type of slice s. +func (s *Slice) Elem() Type { return s.elem } + +// A Struct represents a struct type. +type Struct struct { + fields []*Var + tags []string // field tags; nil if there are no tags + // TODO(gri) access to offsets is not threadsafe - fix this + offsets []int64 // field offsets in bytes, lazily initialized +} + +// NewStruct returns a new struct with the given fields and corresponding field tags. +// If a field with index i has a tag, tags[i] must be that tag, but len(tags) may be +// only as long as required to hold the tag with the largest index i. Consequently, +// if no field has a tag, tags may be nil. +func NewStruct(fields []*Var, tags []string) *Struct { + var fset objset + for _, f := range fields { + if f.name != "_" && fset.insert(f) != nil { + panic("multiple fields with the same name") + } + } + if len(tags) > len(fields) { + panic("more tags than fields") + } + return &Struct{fields: fields, tags: tags} +} + +// NumFields returns the number of fields in the struct (including blank and anonymous fields). +func (s *Struct) NumFields() int { return len(s.fields) } + +// Field returns the i'th field for 0 <= i < NumFields(). +func (s *Struct) Field(i int) *Var { return s.fields[i] } + +// Tag returns the i'th field tag for 0 <= i < NumFields(). +func (s *Struct) Tag(i int) string { + if i < len(s.tags) { + return s.tags[i] + } + return "" +} + +// A Pointer represents a pointer type. +type Pointer struct { + base Type // element type +} + +// NewPointer returns a new pointer type for the given element (base) type. +func NewPointer(elem Type) *Pointer { return &Pointer{base: elem} } + +// Elem returns the element type for the given pointer p. +func (p *Pointer) Elem() Type { return p.base } + +// A Tuple represents an ordered list of variables; a nil *Tuple is a valid (empty) tuple. +// Tuples are used as components of signatures and to represent the type of multiple +// assignments; they are not first class types of Go. +type Tuple struct { + vars []*Var +} + +// NewTuple returns a new tuple for the given variables. +func NewTuple(x ...*Var) *Tuple { + if len(x) > 0 { + return &Tuple{x} + } + return nil +} + +// Len returns the number variables of tuple t. +func (t *Tuple) Len() int { + if t != nil { + return len(t.vars) + } + return 0 +} + +// At returns the i'th variable of tuple t. +func (t *Tuple) At(i int) *Var { return t.vars[i] } + +// A Signature represents a (non-builtin) function or method type. +type Signature struct { + // We need to keep the scope in Signature (rather than passing it around + // and store it in the Func Object) because when type-checking a function + // literal we call the general type checker which returns a general Type. + // We then unpack the *Signature and use the scope for the literal body. + scope *Scope // function scope, present for package-local signatures + recv *Var // nil if not a method + params *Tuple // (incoming) parameters from left to right; or nil + results *Tuple // (outgoing) results from left to right; or nil + variadic bool // true if the last parameter's type is of the form ...T (or string, for append built-in only) +} + +// NewSignature returns a new function type for the given receiver, parameters, +// and results, either of which may be nil. If variadic is set, the function +// is variadic, it must have at least one parameter, and the last parameter +// must be of unnamed slice type. +func NewSignature(recv *Var, params, results *Tuple, variadic bool) *Signature { + if variadic { + n := params.Len() + if n == 0 { + panic("types.NewSignature: variadic function must have at least one parameter") + } + if _, ok := params.At(n - 1).typ.(*Slice); !ok { + panic("types.NewSignature: variadic parameter must be of unnamed slice type") + } + } + return &Signature{nil, recv, params, results, variadic} +} + +// Recv returns the receiver of signature s (if a method), or nil if a +// function. +// +// For an abstract method, Recv returns the enclosing interface either +// as a *Named or an *Interface. Due to embedding, an interface may +// contain methods whose receiver type is a different interface. +func (s *Signature) Recv() *Var { return s.recv } + +// Params returns the parameters of signature s, or nil. +func (s *Signature) Params() *Tuple { return s.params } + +// Results returns the results of signature s, or nil. +func (s *Signature) Results() *Tuple { return s.results } + +// Variadic reports whether the signature s is variadic. +func (s *Signature) Variadic() bool { return s.variadic } + +// An Interface represents an interface type. +type Interface struct { + methods []*Func // ordered list of explicitly declared methods + embeddeds []*Named // ordered list of explicitly embedded types + + allMethods []*Func // ordered list of methods declared with or embedded in this interface (TODO(gri): replace with mset) +} + +// NewInterface returns a new interface for the given methods and embedded types. +func NewInterface(methods []*Func, embeddeds []*Named) *Interface { + typ := new(Interface) + + var mset objset + for _, m := range methods { + if mset.insert(m) != nil { + panic("multiple methods with the same name") + } + // set receiver + // TODO(gri) Ideally, we should use a named type here instead of + // typ, for less verbose printing of interface method signatures. + m.typ.(*Signature).recv = NewVar(m.pos, m.pkg, "", typ) + } + sort.Sort(byUniqueMethodName(methods)) + + if embeddeds == nil { + sort.Sort(byUniqueTypeName(embeddeds)) + } + + typ.methods = methods + typ.embeddeds = embeddeds + return typ +} + +// NumExplicitMethods returns the number of explicitly declared methods of interface t. +func (t *Interface) NumExplicitMethods() int { return len(t.methods) } + +// ExplicitMethod returns the i'th explicitly declared method of interface t for 0 <= i < t.NumExplicitMethods(). +// The methods are ordered by their unique Id. +func (t *Interface) ExplicitMethod(i int) *Func { return t.methods[i] } + +// NumEmbeddeds returns the number of embedded types in interface t. +func (t *Interface) NumEmbeddeds() int { return len(t.embeddeds) } + +// Embedded returns the i'th embedded type of interface t for 0 <= i < t.NumEmbeddeds(). +// The types are ordered by the corresponding TypeName's unique Id. +func (t *Interface) Embedded(i int) *Named { return t.embeddeds[i] } + +// NumMethods returns the total number of methods of interface t. +func (t *Interface) NumMethods() int { return len(t.allMethods) } + +// Method returns the i'th method of interface t for 0 <= i < t.NumMethods(). +// The methods are ordered by their unique Id. +func (t *Interface) Method(i int) *Func { return t.allMethods[i] } + +// Empty returns true if t is the empty interface. +func (t *Interface) Empty() bool { return len(t.allMethods) == 0 } + +// Complete computes the interface's method set. It must be called by users of +// NewInterface after the interface's embedded types are fully defined and +// before using the interface type in any way other than to form other types. +// Complete returns the receiver. +func (t *Interface) Complete() *Interface { + if t.allMethods != nil { + return t + } + + var allMethods []*Func + if t.embeddeds == nil { + if t.methods == nil { + allMethods = make([]*Func, 0, 1) + } else { + allMethods = t.methods + } + } else { + allMethods = append(allMethods, t.methods...) + for _, et := range t.embeddeds { + it := et.Underlying().(*Interface) + it.Complete() + for _, tm := range it.allMethods { + // Make a copy of the method and adjust its receiver type. + newm := *tm + newmtyp := *tm.typ.(*Signature) + newm.typ = &newmtyp + newmtyp.recv = NewVar(newm.pos, newm.pkg, "", t) + allMethods = append(allMethods, &newm) + } + } + sort.Sort(byUniqueMethodName(allMethods)) + } + t.allMethods = allMethods + + return t +} + +// A Map represents a map type. +type Map struct { + key, elem Type +} + +// NewMap returns a new map for the given key and element types. +func NewMap(key, elem Type) *Map { + return &Map{key, elem} +} + +// Key returns the key type of map m. +func (m *Map) Key() Type { return m.key } + +// Elem returns the element type of map m. +func (m *Map) Elem() Type { return m.elem } + +// A Chan represents a channel type. +type Chan struct { + dir ChanDir + elem Type +} + +// A ChanDir value indicates a channel direction. +type ChanDir int + +// The direction of a channel is indicated by one of the following constants. +const ( + SendRecv ChanDir = iota + SendOnly + RecvOnly +) + +// NewChan returns a new channel type for the given direction and element type. +func NewChan(dir ChanDir, elem Type) *Chan { + return &Chan{dir, elem} +} + +// Dir returns the direction of channel c. +func (c *Chan) Dir() ChanDir { return c.dir } + +// Elem returns the element type of channel c. +func (c *Chan) Elem() Type { return c.elem } + +// A Named represents a named type. +type Named struct { + obj *TypeName // corresponding declared object + underlying Type // possibly a *Named during setup; never a *Named once set up completely + methods []*Func // methods declared for this type (not the method set of this type) +} + +// NewNamed returns a new named type for the given type name, underlying type, and associated methods. +// The underlying type must not be a *Named. +func NewNamed(obj *TypeName, underlying Type, methods []*Func) *Named { + if _, ok := underlying.(*Named); ok { + panic("types.NewNamed: underlying type must not be *Named") + } + typ := &Named{obj: obj, underlying: underlying, methods: methods} + if obj.typ == nil { + obj.typ = typ + } + return typ +} + +// TypeName returns the type name for the named type t. +func (t *Named) Obj() *TypeName { return t.obj } + +// NumMethods returns the number of explicit methods whose receiver is named type t. +func (t *Named) NumMethods() int { return len(t.methods) } + +// Method returns the i'th method of named type t for 0 <= i < t.NumMethods(). +func (t *Named) Method(i int) *Func { return t.methods[i] } + +// SetUnderlying sets the underlying type and marks t as complete. +// TODO(gri) determine if there's a better solution rather than providing this function +func (t *Named) SetUnderlying(underlying Type) { + if underlying == nil { + panic("types.Named.SetUnderlying: underlying type must not be nil") + } + if _, ok := underlying.(*Named); ok { + panic("types.Named.SetUnderlying: underlying type must not be *Named") + } + t.underlying = underlying +} + +// AddMethod adds method m unless it is already in the method list. +// TODO(gri) find a better solution instead of providing this function +func (t *Named) AddMethod(m *Func) { + if i, _ := lookupMethod(t.methods, m.pkg, m.name); i < 0 { + t.methods = append(t.methods, m) + } +} + +// Implementations for Type methods. + +func (t *Basic) Underlying() Type { return t } +func (t *Array) Underlying() Type { return t } +func (t *Slice) Underlying() Type { return t } +func (t *Struct) Underlying() Type { return t } +func (t *Pointer) Underlying() Type { return t } +func (t *Tuple) Underlying() Type { return t } +func (t *Signature) Underlying() Type { return t } +func (t *Interface) Underlying() Type { return t } +func (t *Map) Underlying() Type { return t } +func (t *Chan) Underlying() Type { return t } +func (t *Named) Underlying() Type { return t.underlying } + +func (t *Basic) String() string { return TypeString(t, nil) } +func (t *Array) String() string { return TypeString(t, nil) } +func (t *Slice) String() string { return TypeString(t, nil) } +func (t *Struct) String() string { return TypeString(t, nil) } +func (t *Pointer) String() string { return TypeString(t, nil) } +func (t *Tuple) String() string { return TypeString(t, nil) } +func (t *Signature) String() string { return TypeString(t, nil) } +func (t *Interface) String() string { return TypeString(t, nil) } +func (t *Map) String() string { return TypeString(t, nil) } +func (t *Chan) String() string { return TypeString(t, nil) } +func (t *Named) String() string { return TypeString(t, nil) } diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/types/typestring.go b/Godeps/_workspace/src/golang.org/x/tools/go/types/typestring.go new file mode 100644 index 0000000000..abee8abb56 --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/types/typestring.go @@ -0,0 +1,292 @@ +// Copyright 2013 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// This file implements printing of types. + +package types + +import ( + "bytes" + "fmt" +) + +// A Qualifier controls how named package-level objects are printed in +// calls to TypeString, ObjectString, and SelectionString. +// +// These three formatting routines call the Qualifier for each +// package-level object O, and if the Qualifier returns a non-empty +// string p, the object is printed in the form p.O. +// If it returns an empty string, only the object name O is printed. +// +// Using a nil Qualifier is equivalent to using (*Package).Path: the +// object is qualified by the import path, e.g., "encoding/json.Marshal". +// +type Qualifier func(*Package) string + +// RelativeTo(pkg) returns a Qualifier that fully qualifies members of +// all packages other than pkg. +func RelativeTo(pkg *Package) Qualifier { + if pkg == nil { + return nil + } + return func(other *Package) string { + if pkg == other { + return "" // same package; unqualified + } + return other.Path() + } +} + +// If GcCompatibilityMode is set, printing of types is modified +// to match the representation of some types in the gc compiler: +// +// - byte and rune lose their alias name and simply stand for +// uint8 and int32 respectively +// - embedded interfaces get flattened (the embedding info is lost, +// and certain recursive interface types cannot be printed anymore) +// +// This makes it easier to compare packages computed with the type- +// checker vs packages imported from gc export data. +// +// Caution: This flag affects all uses of WriteType, globally. +// It is only provided for testing in conjunction with +// gc-generated data. It may be removed at any time. +var GcCompatibilityMode bool + +// TypeString returns the string representation of typ. +// The Qualifier controls the printing of +// package-level objects, and may be nil. +func TypeString(typ Type, qf Qualifier) string { + var buf bytes.Buffer + WriteType(&buf, typ, qf) + return buf.String() +} + +// WriteType writes the string representation of typ to buf. +// The Qualifier controls the printing of +// package-level objects, and may be nil. +func WriteType(buf *bytes.Buffer, typ Type, qf Qualifier) { + writeType(buf, typ, qf, make([]Type, 8)) +} + +func writeType(buf *bytes.Buffer, typ Type, qf Qualifier, visited []Type) { + // Theoretically, this is a quadratic lookup algorithm, but in + // practice deeply nested composite types with unnamed component + // types are uncommon. This code is likely more efficient than + // using a map. + for _, t := range visited { + if t == typ { + fmt.Fprintf(buf, "○%T", typ) // cycle to typ + return + } + } + visited = append(visited, typ) + + switch t := typ.(type) { + case nil: + buf.WriteString("") + + case *Basic: + if t.kind == UnsafePointer { + buf.WriteString("unsafe.") + } + if GcCompatibilityMode { + // forget the alias names + switch t.kind { + case Byte: + t = Typ[Uint8] + case Rune: + t = Typ[Int32] + } + } + buf.WriteString(t.name) + + case *Array: + fmt.Fprintf(buf, "[%d]", t.len) + writeType(buf, t.elem, qf, visited) + + case *Slice: + buf.WriteString("[]") + writeType(buf, t.elem, qf, visited) + + case *Struct: + buf.WriteString("struct{") + for i, f := range t.fields { + if i > 0 { + buf.WriteString("; ") + } + if !f.anonymous { + buf.WriteString(f.name) + buf.WriteByte(' ') + } + writeType(buf, f.typ, qf, visited) + if tag := t.Tag(i); tag != "" { + fmt.Fprintf(buf, " %q", tag) + } + } + buf.WriteByte('}') + + case *Pointer: + buf.WriteByte('*') + writeType(buf, t.base, qf, visited) + + case *Tuple: + writeTuple(buf, t, false, qf, visited) + + case *Signature: + buf.WriteString("func") + writeSignature(buf, t, qf, visited) + + case *Interface: + // We write the source-level methods and embedded types rather + // than the actual method set since resolved method signatures + // may have non-printable cycles if parameters have anonymous + // interface types that (directly or indirectly) embed the + // current interface. For instance, consider the result type + // of m: + // + // type T interface{ + // m() interface{ T } + // } + // + buf.WriteString("interface{") + if GcCompatibilityMode { + // print flattened interface + // (useful to compare against gc-generated interfaces) + for i, m := range t.allMethods { + if i > 0 { + buf.WriteString("; ") + } + buf.WriteString(m.name) + writeSignature(buf, m.typ.(*Signature), qf, visited) + } + } else { + // print explicit interface methods and embedded types + for i, m := range t.methods { + if i > 0 { + buf.WriteString("; ") + } + buf.WriteString(m.name) + writeSignature(buf, m.typ.(*Signature), qf, visited) + } + for i, typ := range t.embeddeds { + if i > 0 || len(t.methods) > 0 { + buf.WriteString("; ") + } + writeType(buf, typ, qf, visited) + } + } + buf.WriteByte('}') + + case *Map: + buf.WriteString("map[") + writeType(buf, t.key, qf, visited) + buf.WriteByte(']') + writeType(buf, t.elem, qf, visited) + + case *Chan: + var s string + var parens bool + switch t.dir { + case SendRecv: + s = "chan " + // chan (<-chan T) requires parentheses + if c, _ := t.elem.(*Chan); c != nil && c.dir == RecvOnly { + parens = true + } + case SendOnly: + s = "chan<- " + case RecvOnly: + s = "<-chan " + default: + panic("unreachable") + } + buf.WriteString(s) + if parens { + buf.WriteByte('(') + } + writeType(buf, t.elem, qf, visited) + if parens { + buf.WriteByte(')') + } + + case *Named: + s := "" + if obj := t.obj; obj != nil { + if obj.pkg != nil { + writePackage(buf, obj.pkg, qf) + } + // TODO(gri): function-local named types should be displayed + // differently from named types at package level to avoid + // ambiguity. + s = obj.name + } + buf.WriteString(s) + + default: + // For externally defined implementations of Type. + buf.WriteString(t.String()) + } +} + +func writeTuple(buf *bytes.Buffer, tup *Tuple, variadic bool, qf Qualifier, visited []Type) { + buf.WriteByte('(') + if tup != nil { + for i, v := range tup.vars { + if i > 0 { + buf.WriteString(", ") + } + if v.name != "" { + buf.WriteString(v.name) + buf.WriteByte(' ') + } + typ := v.typ + if variadic && i == len(tup.vars)-1 { + if s, ok := typ.(*Slice); ok { + buf.WriteString("...") + typ = s.elem + } else { + // special case: + // append(s, "foo"...) leads to signature func([]byte, string...) + if t, ok := typ.Underlying().(*Basic); !ok || t.kind != String { + panic("internal error: string type expected") + } + writeType(buf, typ, qf, visited) + buf.WriteString("...") + continue + } + } + writeType(buf, typ, qf, visited) + } + } + buf.WriteByte(')') +} + +// WriteSignature writes the representation of the signature sig to buf, +// without a leading "func" keyword. +// The Qualifier controls the printing of +// package-level objects, and may be nil. +func WriteSignature(buf *bytes.Buffer, sig *Signature, qf Qualifier) { + writeSignature(buf, sig, qf, make([]Type, 8)) +} + +func writeSignature(buf *bytes.Buffer, sig *Signature, qf Qualifier, visited []Type) { + writeTuple(buf, sig.params, sig.variadic, qf, visited) + + n := sig.results.Len() + if n == 0 { + // no result + return + } + + buf.WriteByte(' ') + if n == 1 && sig.results.vars[0].name == "" { + // single unnamed result + writeType(buf, sig.results.vars[0].typ, qf, visited) + return + } + + // multiple or named result(s) + writeTuple(buf, sig.results, false, qf, visited) +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/types/typestring_test.go b/Godeps/_workspace/src/golang.org/x/tools/go/types/typestring_test.go new file mode 100644 index 0000000000..975b62389c --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/types/typestring_test.go @@ -0,0 +1,166 @@ +// Copyright 2012 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package types_test + +import ( + "go/ast" + "go/parser" + "go/token" + "testing" + + _ "golang.org/x/tools/go/gcimporter" + . "golang.org/x/tools/go/types" +) + +const filename = "" + +func makePkg(t *testing.T, src string) (*Package, error) { + fset := token.NewFileSet() + file, err := parser.ParseFile(fset, filename, src, parser.DeclarationErrors) + if err != nil { + return nil, err + } + // use the package name as package path + return Check(file.Name.Name, fset, []*ast.File{file}) +} + +type testEntry struct { + src, str string +} + +// dup returns a testEntry where both src and str are the same. +func dup(s string) testEntry { + return testEntry{s, s} +} + +// types that don't depend on any other type declarations +var independentTestTypes = []testEntry{ + // basic types + dup("int"), + dup("float32"), + dup("string"), + + // arrays + dup("[10]int"), + + // slices + dup("[]int"), + dup("[][]int"), + + // structs + dup("struct{}"), + dup("struct{x int}"), + {`struct { + x, y int + z float32 "foo" + }`, `struct{x int; y int; z float32 "foo"}`}, + {`struct { + string + elems []complex128 + }`, `struct{string; elems []complex128}`}, + + // pointers + dup("*int"), + dup("***struct{}"), + dup("*struct{a int; b float32}"), + + // functions + dup("func()"), + dup("func(x int)"), + {"func(x, y int)", "func(x int, y int)"}, + {"func(x, y int, z string)", "func(x int, y int, z string)"}, + dup("func(int)"), + {"func(int, string, byte)", "func(int, string, byte)"}, + + dup("func() int"), + {"func() (string)", "func() string"}, + dup("func() (u int)"), + {"func() (u, v int, w string)", "func() (u int, v int, w string)"}, + + dup("func(int) string"), + dup("func(x int) string"), + dup("func(x int) (u string)"), + {"func(x, y int) (u string)", "func(x int, y int) (u string)"}, + + dup("func(...int) string"), + dup("func(x ...int) string"), + dup("func(x ...int) (u string)"), + {"func(x, y ...int) (u string)", "func(x int, y ...int) (u string)"}, + + // interfaces + dup("interface{}"), + dup("interface{m()}"), + dup(`interface{String() string; m(int) float32}`), + + // maps + dup("map[string]int"), + {"map[struct{x, y int}][]byte", "map[struct{x int; y int}][]byte"}, + + // channels + dup("chan<- chan int"), + dup("chan<- <-chan int"), + dup("<-chan <-chan int"), + dup("chan (<-chan int)"), + dup("chan<- func()"), + dup("<-chan []func() int"), +} + +// types that depend on other type declarations (src in TestTypes) +var dependentTestTypes = []testEntry{ + // interfaces + dup(`interface{io.Reader; io.Writer}`), + dup(`interface{m() int; io.Writer}`), + {`interface{m() interface{T}}`, `interface{m() interface{p.T}}`}, +} + +func TestTypeString(t *testing.T) { + skipSpecialPlatforms(t) + + var tests []testEntry + tests = append(tests, independentTestTypes...) + tests = append(tests, dependentTestTypes...) + + for _, test := range tests { + src := `package p; import "io"; type _ io.Writer; type T ` + test.src + pkg, err := makePkg(t, src) + if err != nil { + t.Errorf("%s: %s", src, err) + continue + } + typ := pkg.Scope().Lookup("T").Type().Underlying() + if got := typ.String(); got != test.str { + t.Errorf("%s: got %s, want %s", test.src, got, test.str) + } + } +} + +func TestQualifiedTypeString(t *testing.T) { + p, _ := pkgFor("p.go", "package p; type T int", nil) + q, _ := pkgFor("q.go", "package q", nil) + + pT := p.Scope().Lookup("T").Type() + for _, test := range []struct { + typ Type + this *Package + want string + }{ + {pT, nil, "p.T"}, + {pT, p, "T"}, + {pT, q, "p.T"}, + {NewPointer(pT), p, "*T"}, + {NewPointer(pT), q, "*p.T"}, + } { + qualifier := func(pkg *Package) string { + if pkg != test.this { + return pkg.Name() + } + return "" + } + if got := TypeString(test.typ, qualifier); got != test.want { + t.Errorf("TypeString(%s, %s) = %s, want %s", + test.this, test.typ, got, test.want) + } + } +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/types/typeutil/example_test.go b/Godeps/_workspace/src/golang.org/x/tools/go/types/typeutil/example_test.go new file mode 100644 index 0000000000..9e3ada7b19 --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/types/typeutil/example_test.go @@ -0,0 +1,68 @@ +// Copyright 2014 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package typeutil_test + +import ( + "fmt" + "sort" + + "go/ast" + "go/parser" + "go/token" + + "golang.org/x/tools/go/types" + "golang.org/x/tools/go/types/typeutil" +) + +func ExampleMap() { + const source = `package P + +var X []string +var Y []string + +const p, q = 1.0, 2.0 + +func f(offset int32) (value byte, ok bool) +func g(rune) (uint8, bool) +` + + // Parse and type-check the package. + fset := token.NewFileSet() + f, err := parser.ParseFile(fset, "P.go", source, 0) + if err != nil { + panic(err) + } + pkg, err := new(types.Config).Check("P", fset, []*ast.File{f}, nil) + if err != nil { + panic(err) + } + + scope := pkg.Scope() + + // Group names of package-level objects by their type. + var namesByType typeutil.Map // value is []string + for _, name := range scope.Names() { + T := scope.Lookup(name).Type() + + names, _ := namesByType.At(T).([]string) + names = append(names, name) + namesByType.Set(T, names) + } + + // Format, sort, and print the map entries. + var lines []string + namesByType.Iterate(func(T types.Type, names interface{}) { + lines = append(lines, fmt.Sprintf("%s %s", names, T)) + }) + sort.Strings(lines) + for _, line := range lines { + fmt.Println(line) + } + + // Output: + // [X Y] []string + // [f g] func(offset int32) (value byte, ok bool) + // [p q] untyped float +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/types/typeutil/imports.go b/Godeps/_workspace/src/golang.org/x/tools/go/types/typeutil/imports.go new file mode 100644 index 0000000000..967fe1e934 --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/types/typeutil/imports.go @@ -0,0 +1,31 @@ +// Copyright 2014 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package typeutil + +import "golang.org/x/tools/go/types" + +// Dependencies returns all dependencies of the specified packages. +// +// Dependent packages appear in topological order: if package P imports +// package Q, Q appears earlier than P in the result. +// The algorithm follows import statements in the order they +// appear in the source code, so the result is a total order. +// +func Dependencies(pkgs ...*types.Package) []*types.Package { + var result []*types.Package + seen := make(map[*types.Package]bool) + var visit func(pkgs []*types.Package) + visit = func(pkgs []*types.Package) { + for _, p := range pkgs { + if !seen[p] { + seen[p] = true + visit(p.Imports()) + result = append(result, p) + } + } + } + visit(pkgs) + return result +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/types/typeutil/imports_test.go b/Godeps/_workspace/src/golang.org/x/tools/go/types/typeutil/imports_test.go new file mode 100644 index 0000000000..8071ae1b11 --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/types/typeutil/imports_test.go @@ -0,0 +1,79 @@ +// Copyright 2014 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package typeutil_test + +import ( + "fmt" + "go/ast" + "go/parser" + "go/token" + "testing" + + "golang.org/x/tools/go/types" + "golang.org/x/tools/go/types/typeutil" +) + +func TestDependencies(t *testing.T) { + packages := make(map[string]*types.Package) + conf := types.Config{ + Packages: packages, + Import: func(_ map[string]*types.Package, path string) (*types.Package, error) { + return packages[path], nil + }, + } + fset := token.NewFileSet() + + // All edges go to the right. + // /--D--B--A + // F \_C_/ + // \__E_/ + for i, content := range []string{ + `package A`, + `package C; import (_ "A")`, + `package B; import (_ "A")`, + `package E; import (_ "C")`, + `package D; import (_ "B"; _ "C")`, + `package F; import (_ "D"; _ "E")`, + } { + f, err := parser.ParseFile(fset, fmt.Sprintf("%d.go", i), content, 0) + if err != nil { + t.Fatal(err) + } + pkg, err := conf.Check(f.Name.Name, fset, []*ast.File{f}, nil) + if err != nil { + t.Fatal(err) + } + packages[pkg.Path()] = pkg + } + + for _, test := range []struct { + roots, want string + }{ + {"A", "A"}, + {"B", "AB"}, + {"C", "AC"}, + {"D", "ABCD"}, + {"E", "ACE"}, + {"F", "ABCDEF"}, + + {"BE", "ABCE"}, + {"EB", "ACEB"}, + {"DE", "ABCDE"}, + {"ED", "ACEBD"}, + {"EF", "ACEBDF"}, + } { + var pkgs []*types.Package + for _, r := range test.roots { + pkgs = append(pkgs, conf.Packages[string(r)]) + } + var got string + for _, p := range typeutil.Dependencies(pkgs...) { + got += p.Path() + } + if got != test.want { + t.Errorf("Dependencies(%q) = %q, want %q", test.roots, got, test.want) + } + } +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/types/typeutil/map.go b/Godeps/_workspace/src/golang.org/x/tools/go/types/typeutil/map.go new file mode 100644 index 0000000000..bf1ed2d956 --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/types/typeutil/map.go @@ -0,0 +1,314 @@ +// Copyright 2014 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// Package typeutil defines various utilities for types, such as Map, +// a mapping from types.Type to interface{} values. +package typeutil + +import ( + "bytes" + "fmt" + "reflect" + + "golang.org/x/tools/go/types" +) + +// Map is a hash-table-based mapping from types (types.Type) to +// arbitrary interface{} values. The concrete types that implement +// the Type interface are pointers. Since they are not canonicalized, +// == cannot be used to check for equivalence, and thus we cannot +// simply use a Go map. +// +// Just as with map[K]V, a nil *Map is a valid empty map. +// +// Not thread-safe. +// +type Map struct { + hasher Hasher // shared by many Maps + table map[uint32][]entry // maps hash to bucket; entry.key==nil means unused + length int // number of map entries +} + +// entry is an entry (key/value association) in a hash bucket. +type entry struct { + key types.Type + value interface{} +} + +// SetHasher sets the hasher used by Map. +// +// All Hashers are functionally equivalent but contain internal state +// used to cache the results of hashing previously seen types. +// +// A single Hasher created by MakeHasher() may be shared among many +// Maps. This is recommended if the instances have many keys in +// common, as it will amortize the cost of hash computation. +// +// A Hasher may grow without bound as new types are seen. Even when a +// type is deleted from the map, the Hasher never shrinks, since other +// types in the map may reference the deleted type indirectly. +// +// Hashers are not thread-safe, and read-only operations such as +// Map.Lookup require updates to the hasher, so a full Mutex lock (not a +// read-lock) is require around all Map operations if a shared +// hasher is accessed from multiple threads. +// +// If SetHasher is not called, the Map will create a private hasher at +// the first call to Insert. +// +func (m *Map) SetHasher(hasher Hasher) { + m.hasher = hasher +} + +// Delete removes the entry with the given key, if any. +// It returns true if the entry was found. +// +func (m *Map) Delete(key types.Type) bool { + if m != nil && m.table != nil { + hash := m.hasher.Hash(key) + bucket := m.table[hash] + for i, e := range bucket { + if e.key != nil && types.Identical(key, e.key) { + // We can't compact the bucket as it + // would disturb iterators. + bucket[i] = entry{} + m.length-- + return true + } + } + } + return false +} + +// At returns the map entry for the given key. +// The result is nil if the entry is not present. +// +func (m *Map) At(key types.Type) interface{} { + if m != nil && m.table != nil { + for _, e := range m.table[m.hasher.Hash(key)] { + if e.key != nil && types.Identical(key, e.key) { + return e.value + } + } + } + return nil +} + +// Set sets the map entry for key to val, +// and returns the previous entry, if any. +func (m *Map) Set(key types.Type, value interface{}) (prev interface{}) { + if m.table != nil { + hash := m.hasher.Hash(key) + bucket := m.table[hash] + var hole *entry + for i, e := range bucket { + if e.key == nil { + hole = &bucket[i] + } else if types.Identical(key, e.key) { + prev = e.value + bucket[i].value = value + return + } + } + + if hole != nil { + *hole = entry{key, value} // overwrite deleted entry + } else { + m.table[hash] = append(bucket, entry{key, value}) + } + } else { + if m.hasher.memo == nil { + m.hasher = MakeHasher() + } + hash := m.hasher.Hash(key) + m.table = map[uint32][]entry{hash: {entry{key, value}}} + } + + m.length++ + return +} + +// Len returns the number of map entries. +func (m *Map) Len() int { + if m != nil { + return m.length + } + return 0 +} + +// Iterate calls function f on each entry in the map in unspecified order. +// +// If f should mutate the map, Iterate provides the same guarantees as +// Go maps: if f deletes a map entry that Iterate has not yet reached, +// f will not be invoked for it, but if f inserts a map entry that +// Iterate has not yet reached, whether or not f will be invoked for +// it is unspecified. +// +func (m *Map) Iterate(f func(key types.Type, value interface{})) { + if m != nil { + for _, bucket := range m.table { + for _, e := range bucket { + if e.key != nil { + f(e.key, e.value) + } + } + } + } +} + +// Keys returns a new slice containing the set of map keys. +// The order is unspecified. +func (m *Map) Keys() []types.Type { + keys := make([]types.Type, 0, m.Len()) + m.Iterate(func(key types.Type, _ interface{}) { + keys = append(keys, key) + }) + return keys +} + +func (m *Map) toString(values bool) string { + if m == nil { + return "{}" + } + var buf bytes.Buffer + fmt.Fprint(&buf, "{") + sep := "" + m.Iterate(func(key types.Type, value interface{}) { + fmt.Fprint(&buf, sep) + sep = ", " + fmt.Fprint(&buf, key) + if values { + fmt.Fprintf(&buf, ": %q", value) + } + }) + fmt.Fprint(&buf, "}") + return buf.String() +} + +// String returns a string representation of the map's entries. +// Values are printed using fmt.Sprintf("%v", v). +// Order is unspecified. +// +func (m *Map) String() string { + return m.toString(true) +} + +// KeysString returns a string representation of the map's key set. +// Order is unspecified. +// +func (m *Map) KeysString() string { + return m.toString(false) +} + +//////////////////////////////////////////////////////////////////////// +// Hasher + +// A Hasher maps each type to its hash value. +// For efficiency, a hasher uses memoization; thus its memory +// footprint grows monotonically over time. +// Hashers are not thread-safe. +// Hashers have reference semantics. +// Call MakeHasher to create a Hasher. +type Hasher struct { + memo map[types.Type]uint32 +} + +// MakeHasher returns a new Hasher instance. +func MakeHasher() Hasher { + return Hasher{make(map[types.Type]uint32)} +} + +// Hash computes a hash value for the given type t such that +// Identical(t, t') => Hash(t) == Hash(t'). +func (h Hasher) Hash(t types.Type) uint32 { + hash, ok := h.memo[t] + if !ok { + hash = h.hashFor(t) + h.memo[t] = hash + } + return hash +} + +// hashString computes the Fowler–Noll–Vo hash of s. +func hashString(s string) uint32 { + var h uint32 + for i := 0; i < len(s); i++ { + h ^= uint32(s[i]) + h *= 16777619 + } + return h +} + +// hashFor computes the hash of t. +func (h Hasher) hashFor(t types.Type) uint32 { + // See Identical for rationale. + switch t := t.(type) { + case *types.Basic: + return uint32(t.Kind()) + + case *types.Array: + return 9043 + 2*uint32(t.Len()) + 3*h.Hash(t.Elem()) + + case *types.Slice: + return 9049 + 2*h.Hash(t.Elem()) + + case *types.Struct: + var hash uint32 = 9059 + for i, n := 0, t.NumFields(); i < n; i++ { + f := t.Field(i) + if f.Anonymous() { + hash += 8861 + } + hash += hashString(t.Tag(i)) + hash += hashString(f.Name()) // (ignore f.Pkg) + hash += h.Hash(f.Type()) + } + return hash + + case *types.Pointer: + return 9067 + 2*h.Hash(t.Elem()) + + case *types.Signature: + var hash uint32 = 9091 + if t.Variadic() { + hash *= 8863 + } + return hash + 3*h.hashTuple(t.Params()) + 5*h.hashTuple(t.Results()) + + case *types.Interface: + var hash uint32 = 9103 + for i, n := 0, t.NumMethods(); i < n; i++ { + // See go/types.identicalMethods for rationale. + // Method order is not significant. + // Ignore m.Pkg(). + m := t.Method(i) + hash += 3*hashString(m.Name()) + 5*h.Hash(m.Type()) + } + return hash + + case *types.Map: + return 9109 + 2*h.Hash(t.Key()) + 3*h.Hash(t.Elem()) + + case *types.Chan: + return 9127 + 2*uint32(t.Dir()) + 3*h.Hash(t.Elem()) + + case *types.Named: + // Not safe with a copying GC; objects may move. + return uint32(reflect.ValueOf(t.Obj()).Pointer()) + + case *types.Tuple: + return h.hashTuple(t) + } + panic(t) +} + +func (h Hasher) hashTuple(tuple *types.Tuple) uint32 { + // See go/types.identicalTypes for rationale. + n := tuple.Len() + var hash uint32 = 9137 + 2*uint32(n) + for i := 0; i < n; i++ { + hash += 3 * h.Hash(tuple.At(i).Type()) + } + return hash +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/types/typeutil/map_test.go b/Godeps/_workspace/src/golang.org/x/tools/go/types/typeutil/map_test.go new file mode 100644 index 0000000000..776b5e2ce4 --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/types/typeutil/map_test.go @@ -0,0 +1,174 @@ +// Copyright 2014 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package typeutil_test + +// TODO(adonovan): +// - test use of explicit hasher across two maps. +// - test hashcodes are consistent with equals for a range of types +// (e.g. all types generated by type-checking some body of real code). + +import ( + "testing" + + "golang.org/x/tools/go/types" + "golang.org/x/tools/go/types/typeutil" +) + +var ( + tStr = types.Typ[types.String] // string + tPStr1 = types.NewPointer(tStr) // *string + tPStr2 = types.NewPointer(tStr) // *string, again + tInt = types.Typ[types.Int] // int + tChanInt1 = types.NewChan(types.RecvOnly, tInt) // <-chan int + tChanInt2 = types.NewChan(types.RecvOnly, tInt) // <-chan int, again +) + +func checkEqualButNotIdentical(t *testing.T, x, y types.Type, comment string) { + if !types.Identical(x, y) { + t.Errorf("%s: not equal: %s, %s", comment, x, y) + } + if x == y { + t.Errorf("%s: identical: %v, %v", comment, x, y) + } +} + +func TestAxioms(t *testing.T) { + checkEqualButNotIdentical(t, tPStr1, tPStr2, "tPstr{1,2}") + checkEqualButNotIdentical(t, tChanInt1, tChanInt2, "tChanInt{1,2}") +} + +func TestMap(t *testing.T) { + var tmap *typeutil.Map + + // All methods but Set are safe on on (*T)(nil). + tmap.Len() + tmap.At(tPStr1) + tmap.Delete(tPStr1) + tmap.KeysString() + tmap.String() + + tmap = new(typeutil.Map) + + // Length of empty map. + if l := tmap.Len(); l != 0 { + t.Errorf("Len() on empty Map: got %d, want 0", l) + } + // At of missing key. + if v := tmap.At(tPStr1); v != nil { + t.Errorf("At() on empty Map: got %v, want nil", v) + } + // Deletion of missing key. + if tmap.Delete(tPStr1) { + t.Errorf("Delete() on empty Map: got true, want false") + } + // Set of new key. + if prev := tmap.Set(tPStr1, "*string"); prev != nil { + t.Errorf("Set() on empty Map returned non-nil previous value %s", prev) + } + + // Now: {*string: "*string"} + + // Length of non-empty map. + if l := tmap.Len(); l != 1 { + t.Errorf("Len(): got %d, want 1", l) + } + // At via insertion key. + if v := tmap.At(tPStr1); v != "*string" { + t.Errorf("At(): got %q, want \"*string\"", v) + } + // At via equal key. + if v := tmap.At(tPStr2); v != "*string" { + t.Errorf("At(): got %q, want \"*string\"", v) + } + // Iteration over sole entry. + tmap.Iterate(func(key types.Type, value interface{}) { + if key != tPStr1 { + t.Errorf("Iterate: key: got %s, want %s", key, tPStr1) + } + if want := "*string"; value != want { + t.Errorf("Iterate: value: got %s, want %s", value, want) + } + }) + + // Setion with key equal to present one. + if prev := tmap.Set(tPStr2, "*string again"); prev != "*string" { + t.Errorf("Set() previous value: got %s, want \"*string\"", prev) + } + + // Setion of another association. + if prev := tmap.Set(tChanInt1, "<-chan int"); prev != nil { + t.Errorf("Set() previous value: got %s, want nil", prev) + } + + // Now: {*string: "*string again", <-chan int: "<-chan int"} + + want1 := "{*string: \"*string again\", <-chan int: \"<-chan int\"}" + want2 := "{<-chan int: \"<-chan int\", *string: \"*string again\"}" + if s := tmap.String(); s != want1 && s != want2 { + t.Errorf("String(): got %s, want %s", s, want1) + } + + want1 = "{*string, <-chan int}" + want2 = "{<-chan int, *string}" + if s := tmap.KeysString(); s != want1 && s != want2 { + t.Errorf("KeysString(): got %s, want %s", s, want1) + } + + // Keys(). + I := types.Identical + switch k := tmap.Keys(); { + case I(k[0], tChanInt1) && I(k[1], tPStr1): // ok + case I(k[1], tChanInt1) && I(k[0], tPStr1): // ok + default: + t.Errorf("Keys(): got %v, want %s", k, want2) + } + + if l := tmap.Len(); l != 2 { + t.Errorf("Len(): got %d, want 1", l) + } + // At via original key. + if v := tmap.At(tPStr1); v != "*string again" { + t.Errorf("At(): got %q, want \"*string again\"", v) + } + hamming := 1 + tmap.Iterate(func(key types.Type, value interface{}) { + switch { + case I(key, tChanInt1): + hamming *= 2 // ok + case I(key, tPStr1): + hamming *= 3 // ok + } + }) + if hamming != 6 { + t.Errorf("Iterate: hamming: got %d, want %d", hamming, 6) + } + + if v := tmap.At(tChanInt2); v != "<-chan int" { + t.Errorf("At(): got %q, want \"<-chan int\"", v) + } + // Deletion with key equal to present one. + if !tmap.Delete(tChanInt2) { + t.Errorf("Delete() of existing key: got false, want true") + } + + // Now: {*string: "*string again"} + + if l := tmap.Len(); l != 1 { + t.Errorf("Len(): got %d, want 1", l) + } + // Deletion again. + if !tmap.Delete(tPStr2) { + t.Errorf("Delete() of existing key: got false, want true") + } + + // Now: {} + + if l := tmap.Len(); l != 0 { + t.Errorf("Len(): got %d, want %d", l, 0) + } + if s := tmap.String(); s != "{}" { + t.Errorf("Len(): got %q, want %q", s, "") + } +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/types/typeutil/methodsetcache.go b/Godeps/_workspace/src/golang.org/x/tools/go/types/typeutil/methodsetcache.go new file mode 100644 index 0000000000..daad6445ab --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/types/typeutil/methodsetcache.go @@ -0,0 +1,73 @@ +// Copyright 2014 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// This file implements a cache of method sets. + +package typeutil + +import ( + "sync" + + "golang.org/x/tools/go/types" +) + +// A MethodSetCache records the method set of each type T for which +// MethodSet(T) is called so that repeat queries are fast. +// The zero value is a ready-to-use cache instance. +type MethodSetCache struct { + mu sync.Mutex + named map[*types.Named]struct{ value, pointer *types.MethodSet } // method sets for named N and *N + others map[types.Type]*types.MethodSet // all other types +} + +// MethodSet returns the method set of type T. It is thread-safe. +// +// If cache is nil, this function is equivalent to types.NewMethodSet(T). +// Utility functions can thus expose an optional *MethodSetCache +// parameter to clients that care about performance. +// +func (cache *MethodSetCache) MethodSet(T types.Type) *types.MethodSet { + if cache == nil { + return types.NewMethodSet(T) + } + cache.mu.Lock() + defer cache.mu.Unlock() + + switch T := T.(type) { + case *types.Named: + return cache.lookupNamed(T).value + + case *types.Pointer: + if N, ok := T.Elem().(*types.Named); ok { + return cache.lookupNamed(N).pointer + } + } + + // all other types + // (The map uses pointer equivalence, not type identity.) + mset := cache.others[T] + if mset == nil { + mset = types.NewMethodSet(T) + if cache.others == nil { + cache.others = make(map[types.Type]*types.MethodSet) + } + cache.others[T] = mset + } + return mset +} + +func (cache *MethodSetCache) lookupNamed(named *types.Named) struct{ value, pointer *types.MethodSet } { + if cache.named == nil { + cache.named = make(map[*types.Named]struct{ value, pointer *types.MethodSet }) + } + // Avoid recomputing mset(*T) for each distinct Pointer + // instance whose underlying type is a named type. + msets, ok := cache.named[named] + if !ok { + msets.value = types.NewMethodSet(named) + msets.pointer = types.NewMethodSet(types.NewPointer(named)) + cache.named[named] = msets + } + return msets +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/types/typeutil/ui.go b/Godeps/_workspace/src/golang.org/x/tools/go/types/typeutil/ui.go new file mode 100644 index 0000000000..20c5249a4a --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/types/typeutil/ui.go @@ -0,0 +1,38 @@ +// Copyright 2014 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package typeutil + +// This file defines utilities for user interfaces that display types. + +import "golang.org/x/tools/go/types" + +// IntuitiveMethodSet returns the intuitive method set of a type, T. +// +// The result contains MethodSet(T) and additionally, if T is a +// concrete type, methods belonging to *T if there is no identically +// named method on T itself. This corresponds to user intuition about +// method sets; this function is intended only for user interfaces. +// +// The order of the result is as for types.MethodSet(T). +// +func IntuitiveMethodSet(T types.Type, msets *MethodSetCache) []*types.Selection { + var result []*types.Selection + mset := msets.MethodSet(T) + if _, ok := T.Underlying().(*types.Interface); ok { + for i, n := 0, mset.Len(); i < n; i++ { + result = append(result, mset.At(i)) + } + } else { + pmset := msets.MethodSet(types.NewPointer(T)) + for i, n := 0, pmset.Len(); i < n; i++ { + meth := pmset.At(i) + if m := mset.Lookup(meth.Obj().Pkg(), meth.Obj().Name()); m != nil { + meth = m + } + result = append(result, meth) + } + } + return result +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/types/typexpr.go b/Godeps/_workspace/src/golang.org/x/tools/go/types/typexpr.go new file mode 100644 index 0000000000..bd2d7ba272 --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/types/typexpr.go @@ -0,0 +1,713 @@ +// Copyright 2013 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// This file implements type-checking of identifiers and type expressions. + +package types + +import ( + "go/ast" + "go/token" + "sort" + "strconv" + + "golang.org/x/tools/go/exact" +) + +// ident type-checks identifier e and initializes x with the value or type of e. +// If an error occurred, x.mode is set to invalid. +// For the meaning of def and path, see check.typ, below. +// +func (check *Checker) ident(x *operand, e *ast.Ident, def *Named, path []*TypeName) { + x.mode = invalid + x.expr = e + + scope, obj := check.scope.LookupParent(e.Name, check.pos) + if obj == nil { + if e.Name == "_" { + check.errorf(e.Pos(), "cannot use _ as value or type") + } else { + check.errorf(e.Pos(), "undeclared name: %s", e.Name) + } + return + } + check.recordUse(e, obj) + + check.objDecl(obj, def, path) + typ := obj.Type() + assert(typ != nil) + + // The object may be dot-imported: If so, remove its package from + // the map of unused dot imports for the respective file scope. + // (This code is only needed for dot-imports. Without them, + // we only have to mark variables, see *Var case below). + if pkg := obj.Pkg(); pkg != check.pkg && pkg != nil { + delete(check.unusedDotImports[scope], pkg) + } + + switch obj := obj.(type) { + case *PkgName: + check.errorf(e.Pos(), "use of package %s not in selector", obj.name) + return + + case *Const: + check.addDeclDep(obj) + if typ == Typ[Invalid] { + return + } + if obj == universeIota { + if check.iota == nil { + check.errorf(e.Pos(), "cannot use iota outside constant declaration") + return + } + x.val = check.iota + } else { + x.val = obj.val + } + assert(x.val != nil) + x.mode = constant + + case *TypeName: + x.mode = typexpr + // check for cycle + // (it's ok to iterate forward because each named type appears at most once in path) + for i, prev := range path { + if prev == obj { + check.errorf(obj.pos, "illegal cycle in declaration of %s", obj.name) + // print cycle + for _, obj := range path[i:] { + check.errorf(obj.Pos(), "\t%s refers to", obj.Name()) // secondary error, \t indented + } + check.errorf(obj.Pos(), "\t%s", obj.Name()) + // maintain x.mode == typexpr despite error + typ = Typ[Invalid] + break + } + } + + case *Var: + if obj.pkg == check.pkg { + obj.used = true + } + check.addDeclDep(obj) + if typ == Typ[Invalid] { + return + } + x.mode = variable + + case *Func: + check.addDeclDep(obj) + x.mode = value + + case *Builtin: + x.id = obj.id + x.mode = builtin + + case *Nil: + x.mode = value + + default: + unreachable() + } + + x.typ = typ +} + +// typExpr type-checks the type expression e and returns its type, or Typ[Invalid]. +// If def != nil, e is the type specification for the named type def, declared +// in a type declaration, and def.underlying will be set to the type of e before +// any components of e are type-checked. Path contains the path of named types +// referring to this type. +// +func (check *Checker) typExpr(e ast.Expr, def *Named, path []*TypeName) (T Type) { + if trace { + check.trace(e.Pos(), "%s", e) + check.indent++ + defer func() { + check.indent-- + check.trace(e.Pos(), "=> %s", T) + }() + } + + T = check.typExprInternal(e, def, path) + assert(isTyped(T)) + check.recordTypeAndValue(e, typexpr, T, nil) + + return +} + +func (check *Checker) typ(e ast.Expr) Type { + return check.typExpr(e, nil, nil) +} + +// funcType type-checks a function or method type. +func (check *Checker) funcType(sig *Signature, recvPar *ast.FieldList, ftyp *ast.FuncType) { + scope := NewScope(check.scope, token.NoPos, token.NoPos, "function") + check.recordScope(ftyp, scope) + + recvList, _ := check.collectParams(scope, recvPar, false) + params, variadic := check.collectParams(scope, ftyp.Params, true) + results, _ := check.collectParams(scope, ftyp.Results, false) + + if recvPar != nil { + // recv parameter list present (may be empty) + // spec: "The receiver is specified via an extra parameter section preceeding the + // method name. That parameter section must declare a single parameter, the receiver." + var recv *Var + switch len(recvList) { + case 0: + check.error(recvPar.Pos(), "method is missing receiver") + recv = NewParam(0, nil, "", Typ[Invalid]) // ignore recv below + default: + // more than one receiver + check.error(recvList[len(recvList)-1].Pos(), "method must have exactly one receiver") + fallthrough // continue with first receiver + case 1: + recv = recvList[0] + } + // spec: "The receiver type must be of the form T or *T where T is a type name." + // (ignore invalid types - error was reported before) + if t, _ := deref(recv.typ); t != Typ[Invalid] { + var err string + if T, _ := t.(*Named); T != nil { + // spec: "The type denoted by T is called the receiver base type; it must not + // be a pointer or interface type and it must be declared in the same package + // as the method." + if T.obj.pkg != check.pkg { + err = "type not defined in this package" + } else { + // TODO(gri) This is not correct if the underlying type is unknown yet. + switch u := T.underlying.(type) { + case *Basic: + // unsafe.Pointer is treated like a regular pointer + if u.kind == UnsafePointer { + err = "unsafe.Pointer" + } + case *Pointer, *Interface: + err = "pointer or interface type" + } + } + } else { + err = "basic or unnamed type" + } + if err != "" { + check.errorf(recv.pos, "invalid receiver %s (%s)", recv.typ, err) + // ok to continue + } + } + sig.recv = recv + } + + sig.scope = scope + sig.params = NewTuple(params...) + sig.results = NewTuple(results...) + sig.variadic = variadic +} + +// typExprInternal drives type checking of types. +// Must only be called by typExpr. +// +func (check *Checker) typExprInternal(e ast.Expr, def *Named, path []*TypeName) Type { + switch e := e.(type) { + case *ast.BadExpr: + // ignore - error reported before + + case *ast.Ident: + var x operand + check.ident(&x, e, def, path) + + switch x.mode { + case typexpr: + typ := x.typ + def.setUnderlying(typ) + return typ + case invalid: + // ignore - error reported before + case novalue: + check.errorf(x.pos(), "%s used as type", &x) + default: + check.errorf(x.pos(), "%s is not a type", &x) + } + + case *ast.SelectorExpr: + var x operand + check.selector(&x, e) + + switch x.mode { + case typexpr: + typ := x.typ + def.setUnderlying(typ) + return typ + case invalid: + // ignore - error reported before + case novalue: + check.errorf(x.pos(), "%s used as type", &x) + default: + check.errorf(x.pos(), "%s is not a type", &x) + } + + case *ast.ParenExpr: + return check.typExpr(e.X, def, path) + + case *ast.ArrayType: + if e.Len != nil { + typ := new(Array) + def.setUnderlying(typ) + typ.len = check.arrayLength(e.Len) + typ.elem = check.typExpr(e.Elt, nil, path) + return typ + + } else { + typ := new(Slice) + def.setUnderlying(typ) + typ.elem = check.typ(e.Elt) + return typ + } + + case *ast.StructType: + typ := new(Struct) + def.setUnderlying(typ) + check.structType(typ, e, path) + return typ + + case *ast.StarExpr: + typ := new(Pointer) + def.setUnderlying(typ) + typ.base = check.typ(e.X) + return typ + + case *ast.FuncType: + typ := new(Signature) + def.setUnderlying(typ) + check.funcType(typ, nil, e) + return typ + + case *ast.InterfaceType: + typ := new(Interface) + def.setUnderlying(typ) + check.interfaceType(typ, e, def, path) + return typ + + case *ast.MapType: + typ := new(Map) + def.setUnderlying(typ) + + typ.key = check.typ(e.Key) + typ.elem = check.typ(e.Value) + + // spec: "The comparison operators == and != must be fully defined + // for operands of the key type; thus the key type must not be a + // function, map, or slice." + // + // Delay this check because it requires fully setup types; + // it is safe to continue in any case (was issue 6667). + check.delay(func() { + if !Comparable(typ.key) { + check.errorf(e.Key.Pos(), "invalid map key type %s", typ.key) + } + }) + + return typ + + case *ast.ChanType: + typ := new(Chan) + def.setUnderlying(typ) + + dir := SendRecv + switch e.Dir { + case ast.SEND | ast.RECV: + // nothing to do + case ast.SEND: + dir = SendOnly + case ast.RECV: + dir = RecvOnly + default: + check.invalidAST(e.Pos(), "unknown channel direction %d", e.Dir) + // ok to continue + } + + typ.dir = dir + typ.elem = check.typ(e.Value) + return typ + + default: + check.errorf(e.Pos(), "%s is not a type", e) + } + + typ := Typ[Invalid] + def.setUnderlying(typ) + return typ +} + +// typeOrNil type-checks the type expression (or nil value) e +// and returns the typ of e, or nil. +// If e is neither a type nor nil, typOrNil returns Typ[Invalid]. +// +func (check *Checker) typOrNil(e ast.Expr) Type { + var x operand + check.rawExpr(&x, e, nil) + switch x.mode { + case invalid: + // ignore - error reported before + case novalue: + check.errorf(x.pos(), "%s used as type", &x) + case typexpr: + return x.typ + case value: + if x.isNil() { + return nil + } + fallthrough + default: + check.errorf(x.pos(), "%s is not a type", &x) + } + return Typ[Invalid] +} + +func (check *Checker) arrayLength(e ast.Expr) int64 { + var x operand + check.expr(&x, e) + if x.mode != constant { + if x.mode != invalid { + check.errorf(x.pos(), "array length %s must be constant", &x) + } + return 0 + } + if !x.isInteger() { + check.errorf(x.pos(), "array length %s must be integer", &x) + return 0 + } + n, ok := exact.Int64Val(x.val) + if !ok || n < 0 { + check.errorf(x.pos(), "invalid array length %s", &x) + return 0 + } + return n +} + +func (check *Checker) collectParams(scope *Scope, list *ast.FieldList, variadicOk bool) (params []*Var, variadic bool) { + if list == nil { + return + } + + var named, anonymous bool + for i, field := range list.List { + ftype := field.Type + if t, _ := ftype.(*ast.Ellipsis); t != nil { + ftype = t.Elt + if variadicOk && i == len(list.List)-1 { + variadic = true + } else { + check.invalidAST(field.Pos(), "... not permitted") + // ignore ... and continue + } + } + typ := check.typ(ftype) + // The parser ensures that f.Tag is nil and we don't + // care if a constructed AST contains a non-nil tag. + if len(field.Names) > 0 { + // named parameter + for _, name := range field.Names { + if name.Name == "" { + check.invalidAST(name.Pos(), "anonymous parameter") + // ok to continue + } + par := NewParam(name.Pos(), check.pkg, name.Name, typ) + check.declare(scope, name, par, scope.pos) + params = append(params, par) + } + named = true + } else { + // anonymous parameter + par := NewParam(ftype.Pos(), check.pkg, "", typ) + check.recordImplicit(field, par) + params = append(params, par) + anonymous = true + } + } + + if named && anonymous { + check.invalidAST(list.Pos(), "list contains both named and anonymous parameters") + // ok to continue + } + + // For a variadic function, change the last parameter's type from T to []T. + if variadic && len(params) > 0 { + last := params[len(params)-1] + last.typ = &Slice{elem: last.typ} + } + + return +} + +func (check *Checker) declareInSet(oset *objset, pos token.Pos, obj Object) bool { + if alt := oset.insert(obj); alt != nil { + check.errorf(pos, "%s redeclared", obj.Name()) + check.reportAltDecl(alt) + return false + } + return true +} + +func (check *Checker) interfaceType(iface *Interface, ityp *ast.InterfaceType, def *Named, path []*TypeName) { + // empty interface: common case + if ityp.Methods == nil { + return + } + + // The parser ensures that field tags are nil and we don't + // care if a constructed AST contains non-nil tags. + + // use named receiver type if available (for better error messages) + var recvTyp Type = iface + if def != nil { + recvTyp = def + } + + // Phase 1: Collect explicitly declared methods, the corresponding + // signature (AST) expressions, and the list of embedded + // type (AST) expressions. Do not resolve signatures or + // embedded types yet to avoid cycles referring to this + // interface. + + var ( + mset objset + signatures []ast.Expr // list of corresponding method signatures + embedded []ast.Expr // list of embedded types + ) + for _, f := range ityp.Methods.List { + if len(f.Names) > 0 { + // The parser ensures that there's only one method + // and we don't care if a constructed AST has more. + name := f.Names[0] + pos := name.Pos() + // spec: "As with all method sets, in an interface type, + // each method must have a unique non-blank name." + if name.Name == "_" { + check.errorf(pos, "invalid method name _") + continue + } + // Don't type-check signature yet - use an + // empty signature now and update it later. + // Since we know the receiver, set it up now + // (required to avoid crash in ptrRecv; see + // e.g. test case for issue 6638). + // TODO(gri) Consider marking methods signatures + // as incomplete, for better error messages. See + // also the T4 and T5 tests in testdata/cycles2.src. + sig := new(Signature) + sig.recv = NewVar(pos, check.pkg, "", recvTyp) + m := NewFunc(pos, check.pkg, name.Name, sig) + if check.declareInSet(&mset, pos, m) { + iface.methods = append(iface.methods, m) + iface.allMethods = append(iface.allMethods, m) + signatures = append(signatures, f.Type) + check.recordDef(name, m) + } + } else { + // embedded type + embedded = append(embedded, f.Type) + } + } + + // Phase 2: Resolve embedded interfaces. Because an interface must not + // embed itself (directly or indirectly), each embedded interface + // can be fully resolved without depending on any method of this + // interface (if there is a cycle or another error, the embedded + // type resolves to an invalid type and is ignored). + // In particular, the list of methods for each embedded interface + // must be complete (it cannot depend on this interface), and so + // those methods can be added to the list of all methods of this + // interface. + + for _, e := range embedded { + pos := e.Pos() + typ := check.typExpr(e, nil, path) + // Determine underlying embedded (possibly incomplete) type + // by following its forward chain. + named, _ := typ.(*Named) + under := underlying(named) + embed, _ := under.(*Interface) + if embed == nil { + if typ != Typ[Invalid] { + check.errorf(pos, "%s is not an interface", typ) + } + continue + } + iface.embeddeds = append(iface.embeddeds, named) + // collect embedded methods + for _, m := range embed.allMethods { + if check.declareInSet(&mset, pos, m) { + iface.allMethods = append(iface.allMethods, m) + } + } + } + + // Phase 3: At this point all methods have been collected for this interface. + // It is now safe to type-check the signatures of all explicitly + // declared methods, even if they refer to this interface via a cycle + // and embed the methods of this interface in a parameter of interface + // type. + + for i, m := range iface.methods { + expr := signatures[i] + typ := check.typ(expr) + sig, _ := typ.(*Signature) + if sig == nil { + if typ != Typ[Invalid] { + check.invalidAST(expr.Pos(), "%s is not a method signature", typ) + } + continue // keep method with empty method signature + } + // update signature, but keep recv that was set up before + old := m.typ.(*Signature) + sig.recv = old.recv + *old = *sig // update signature (don't replace it!) + } + + // TODO(gri) The list of explicit methods is only sorted for now to + // produce the same Interface as NewInterface. We may be able to + // claim source order in the future. Revisit. + sort.Sort(byUniqueMethodName(iface.methods)) + + // TODO(gri) The list of embedded types is only sorted for now to + // produce the same Interface as NewInterface. We may be able to + // claim source order in the future. Revisit. + sort.Sort(byUniqueTypeName(iface.embeddeds)) + + sort.Sort(byUniqueMethodName(iface.allMethods)) +} + +// byUniqueTypeName named type lists can be sorted by their unique type names. +type byUniqueTypeName []*Named + +func (a byUniqueTypeName) Len() int { return len(a) } +func (a byUniqueTypeName) Less(i, j int) bool { return a[i].obj.Id() < a[j].obj.Id() } +func (a byUniqueTypeName) Swap(i, j int) { a[i], a[j] = a[j], a[i] } + +// byUniqueMethodName method lists can be sorted by their unique method names. +type byUniqueMethodName []*Func + +func (a byUniqueMethodName) Len() int { return len(a) } +func (a byUniqueMethodName) Less(i, j int) bool { return a[i].Id() < a[j].Id() } +func (a byUniqueMethodName) Swap(i, j int) { a[i], a[j] = a[j], a[i] } + +func (check *Checker) tag(t *ast.BasicLit) string { + if t != nil { + if t.Kind == token.STRING { + if val, err := strconv.Unquote(t.Value); err == nil { + return val + } + } + check.invalidAST(t.Pos(), "incorrect tag syntax: %q", t.Value) + } + return "" +} + +func (check *Checker) structType(styp *Struct, e *ast.StructType, path []*TypeName) { + list := e.Fields + if list == nil { + return + } + + // struct fields and tags + var fields []*Var + var tags []string + + // for double-declaration checks + var fset objset + + // current field typ and tag + var typ Type + var tag string + // anonymous != nil indicates an anonymous field. + add := func(field *ast.Field, ident *ast.Ident, anonymous *TypeName, pos token.Pos) { + if tag != "" && tags == nil { + tags = make([]string, len(fields)) + } + if tags != nil { + tags = append(tags, tag) + } + + name := ident.Name + fld := NewField(pos, check.pkg, name, typ, anonymous != nil) + // spec: "Within a struct, non-blank field names must be unique." + if name == "_" || check.declareInSet(&fset, pos, fld) { + fields = append(fields, fld) + check.recordDef(ident, fld) + } + if anonymous != nil { + check.recordUse(ident, anonymous) + } + } + + for _, f := range list.List { + typ = check.typExpr(f.Type, nil, path) + tag = check.tag(f.Tag) + if len(f.Names) > 0 { + // named fields + for _, name := range f.Names { + add(f, name, nil, name.Pos()) + } + } else { + // anonymous field + name := anonymousFieldIdent(f.Type) + pos := f.Type.Pos() + t, isPtr := deref(typ) + switch t := t.(type) { + case *Basic: + if t == Typ[Invalid] { + // error was reported before + continue + } + // unsafe.Pointer is treated like a regular pointer + if t.kind == UnsafePointer { + check.errorf(pos, "anonymous field type cannot be unsafe.Pointer") + continue + } + add(f, name, Universe.Lookup(t.name).(*TypeName), pos) + + case *Named: + // spec: "An embedded type must be specified as a type name + // T or as a pointer to a non-interface type name *T, and T + // itself may not be a pointer type." + switch u := t.underlying.(type) { + case *Basic: + // unsafe.Pointer is treated like a regular pointer + if u.kind == UnsafePointer { + check.errorf(pos, "anonymous field type cannot be unsafe.Pointer") + continue + } + case *Pointer: + check.errorf(pos, "anonymous field type cannot be a pointer") + continue + case *Interface: + if isPtr { + check.errorf(pos, "anonymous field type cannot be a pointer to an interface") + continue + } + } + add(f, name, t.obj, pos) + + default: + check.invalidAST(pos, "anonymous field type %s must be named", typ) + } + } + } + + styp.fields = fields + styp.tags = tags +} + +func anonymousFieldIdent(e ast.Expr) *ast.Ident { + switch e := e.(type) { + case *ast.Ident: + return e + case *ast.StarExpr: + return anonymousFieldIdent(e.X) + case *ast.SelectorExpr: + return e.Sel + } + return nil // invalid anonymous field +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/go/types/universe.go b/Godeps/_workspace/src/golang.org/x/tools/go/types/universe.go new file mode 100644 index 0000000000..12a34ef853 --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/go/types/universe.go @@ -0,0 +1,224 @@ +// Copyright 2011 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// This file sets up the universe scope and the unsafe package. + +package types + +import ( + "go/token" + "strings" + + "golang.org/x/tools/go/exact" +) + +var ( + Universe *Scope + Unsafe *Package + universeIota *Const + universeByte *Basic // uint8 alias, but has name "byte" + universeRune *Basic // int32 alias, but has name "rune" +) + +var Typ = []*Basic{ + Invalid: {Invalid, 0, "invalid type"}, + + Bool: {Bool, IsBoolean, "bool"}, + Int: {Int, IsInteger, "int"}, + Int8: {Int8, IsInteger, "int8"}, + Int16: {Int16, IsInteger, "int16"}, + Int32: {Int32, IsInteger, "int32"}, + Int64: {Int64, IsInteger, "int64"}, + Uint: {Uint, IsInteger | IsUnsigned, "uint"}, + Uint8: {Uint8, IsInteger | IsUnsigned, "uint8"}, + Uint16: {Uint16, IsInteger | IsUnsigned, "uint16"}, + Uint32: {Uint32, IsInteger | IsUnsigned, "uint32"}, + Uint64: {Uint64, IsInteger | IsUnsigned, "uint64"}, + Uintptr: {Uintptr, IsInteger | IsUnsigned, "uintptr"}, + Float32: {Float32, IsFloat, "float32"}, + Float64: {Float64, IsFloat, "float64"}, + Complex64: {Complex64, IsComplex, "complex64"}, + Complex128: {Complex128, IsComplex, "complex128"}, + String: {String, IsString, "string"}, + UnsafePointer: {UnsafePointer, 0, "Pointer"}, + + UntypedBool: {UntypedBool, IsBoolean | IsUntyped, "untyped bool"}, + UntypedInt: {UntypedInt, IsInteger | IsUntyped, "untyped int"}, + UntypedRune: {UntypedRune, IsInteger | IsUntyped, "untyped rune"}, + UntypedFloat: {UntypedFloat, IsFloat | IsUntyped, "untyped float"}, + UntypedComplex: {UntypedComplex, IsComplex | IsUntyped, "untyped complex"}, + UntypedString: {UntypedString, IsString | IsUntyped, "untyped string"}, + UntypedNil: {UntypedNil, IsUntyped, "untyped nil"}, +} + +var aliases = [...]*Basic{ + {Byte, IsInteger | IsUnsigned, "byte"}, + {Rune, IsInteger, "rune"}, +} + +func defPredeclaredTypes() { + for _, t := range Typ { + def(NewTypeName(token.NoPos, nil, t.name, t)) + } + for _, t := range aliases { + def(NewTypeName(token.NoPos, nil, t.name, t)) + } + + // Error has a nil package in its qualified name since it is in no package + res := NewVar(token.NoPos, nil, "", Typ[String]) + sig := &Signature{results: NewTuple(res)} + err := NewFunc(token.NoPos, nil, "Error", sig) + typ := &Named{underlying: NewInterface([]*Func{err}, nil).Complete()} + sig.recv = NewVar(token.NoPos, nil, "", typ) + def(NewTypeName(token.NoPos, nil, "error", typ)) +} + +var predeclaredConsts = [...]struct { + name string + kind BasicKind + val exact.Value +}{ + {"true", UntypedBool, exact.MakeBool(true)}, + {"false", UntypedBool, exact.MakeBool(false)}, + {"iota", UntypedInt, exact.MakeInt64(0)}, +} + +func defPredeclaredConsts() { + for _, c := range predeclaredConsts { + def(NewConst(token.NoPos, nil, c.name, Typ[c.kind], c.val)) + } +} + +func defPredeclaredNil() { + def(&Nil{object{name: "nil", typ: Typ[UntypedNil]}}) +} + +// A builtinId is the id of a builtin function. +type builtinId int + +const ( + // universe scope + _Append builtinId = iota + _Cap + _Close + _Complex + _Copy + _Delete + _Imag + _Len + _Make + _New + _Panic + _Print + _Println + _Real + _Recover + + // package unsafe + _Alignof + _Offsetof + _Sizeof + + // testing support + _Assert + _Trace +) + +var predeclaredFuncs = [...]struct { + name string + nargs int + variadic bool + kind exprKind +}{ + _Append: {"append", 1, true, expression}, + _Cap: {"cap", 1, false, expression}, + _Close: {"close", 1, false, statement}, + _Complex: {"complex", 2, false, expression}, + _Copy: {"copy", 2, false, statement}, + _Delete: {"delete", 2, false, statement}, + _Imag: {"imag", 1, false, expression}, + _Len: {"len", 1, false, expression}, + _Make: {"make", 1, true, expression}, + _New: {"new", 1, false, expression}, + _Panic: {"panic", 1, false, statement}, + _Print: {"print", 0, true, statement}, + _Println: {"println", 0, true, statement}, + _Real: {"real", 1, false, expression}, + _Recover: {"recover", 0, false, statement}, + + _Alignof: {"Alignof", 1, false, expression}, + _Offsetof: {"Offsetof", 1, false, expression}, + _Sizeof: {"Sizeof", 1, false, expression}, + + _Assert: {"assert", 1, false, statement}, + _Trace: {"trace", 0, true, statement}, +} + +func defPredeclaredFuncs() { + for i := range predeclaredFuncs { + id := builtinId(i) + if id == _Assert || id == _Trace { + continue // only define these in testing environment + } + def(newBuiltin(id)) + } +} + +// DefPredeclaredTestFuncs defines the assert and trace built-ins. +// These built-ins are intended for debugging and testing of this +// package only. +func DefPredeclaredTestFuncs() { + if Universe.Lookup("assert") != nil { + return // already defined + } + def(newBuiltin(_Assert)) + def(newBuiltin(_Trace)) +} + +func init() { + Universe = NewScope(nil, token.NoPos, token.NoPos, "universe") + Unsafe = NewPackage("unsafe", "unsafe") + Unsafe.complete = true + + defPredeclaredTypes() + defPredeclaredConsts() + defPredeclaredNil() + defPredeclaredFuncs() + + universeIota = Universe.Lookup("iota").(*Const) + universeByte = Universe.Lookup("byte").(*TypeName).typ.(*Basic) + universeRune = Universe.Lookup("rune").(*TypeName).typ.(*Basic) +} + +// Objects with names containing blanks are internal and not entered into +// a scope. Objects with exported names are inserted in the unsafe package +// scope; other objects are inserted in the universe scope. +// +func def(obj Object) { + name := obj.Name() + if strings.Index(name, " ") >= 0 { + return // nothing to do + } + // fix Obj link for named types + if typ, ok := obj.Type().(*Named); ok { + typ.obj = obj.(*TypeName) + } + // exported identifiers go into package unsafe + scope := Universe + if obj.Exported() { + scope = Unsafe.scope + // set Pkg field + switch obj := obj.(type) { + case *TypeName: + obj.pkg = Unsafe + case *Builtin: + obj.pkg = Unsafe + default: + unreachable() + } + } + if scope.Insert(obj) != nil { + panic("internal error: double declaration") + } +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/imports/fix.go b/Godeps/_workspace/src/golang.org/x/tools/imports/fix.go new file mode 100644 index 0000000000..22fde6c1f0 --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/imports/fix.go @@ -0,0 +1,387 @@ +// Copyright 2013 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package imports + +import ( + "fmt" + "go/ast" + "go/build" + "go/parser" + "go/token" + "os" + "path" + "path/filepath" + "strings" + "sync" + + "golang.org/x/tools/go/ast/astutil" +) + +// importToGroup is a list of functions which map from an import path to +// a group number. +var importToGroup = []func(importPath string) (num int, ok bool){ + func(importPath string) (num int, ok bool) { + if strings.HasPrefix(importPath, "appengine") { + return 2, true + } + return + }, + func(importPath string) (num int, ok bool) { + if strings.Contains(importPath, ".") { + return 1, true + } + return + }, +} + +func importGroup(importPath string) int { + for _, fn := range importToGroup { + if n, ok := fn(importPath); ok { + return n + } + } + return 0 +} + +func fixImports(fset *token.FileSet, f *ast.File) (added []string, err error) { + // refs are a set of possible package references currently unsatisfied by imports. + // first key: either base package (e.g. "fmt") or renamed package + // second key: referenced package symbol (e.g. "Println") + refs := make(map[string]map[string]bool) + + // decls are the current package imports. key is base package or renamed package. + decls := make(map[string]*ast.ImportSpec) + + // collect potential uses of packages. + var visitor visitFn + visitor = visitFn(func(node ast.Node) ast.Visitor { + if node == nil { + return visitor + } + switch v := node.(type) { + case *ast.ImportSpec: + if v.Name != nil { + decls[v.Name.Name] = v + } else { + local := importPathToName(strings.Trim(v.Path.Value, `\"`)) + decls[local] = v + } + case *ast.SelectorExpr: + xident, ok := v.X.(*ast.Ident) + if !ok { + break + } + if xident.Obj != nil { + // if the parser can resolve it, it's not a package ref + break + } + pkgName := xident.Name + if refs[pkgName] == nil { + refs[pkgName] = make(map[string]bool) + } + if decls[pkgName] == nil { + refs[pkgName][v.Sel.Name] = true + } + } + return visitor + }) + ast.Walk(visitor, f) + + // Search for imports matching potential package references. + searches := 0 + type result struct { + ipath string + name string + err error + } + results := make(chan result) + for pkgName, symbols := range refs { + if len(symbols) == 0 { + continue // skip over packages already imported + } + go func(pkgName string, symbols map[string]bool) { + ipath, rename, err := findImport(pkgName, symbols) + r := result{ipath: ipath, err: err} + if rename { + r.name = pkgName + } + results <- r + }(pkgName, symbols) + searches++ + } + for i := 0; i < searches; i++ { + result := <-results + if result.err != nil { + return nil, result.err + } + if result.ipath != "" { + if result.name != "" { + astutil.AddNamedImport(fset, f, result.name, result.ipath) + } else { + astutil.AddImport(fset, f, result.ipath) + } + added = append(added, result.ipath) + } + } + + // Nil out any unused ImportSpecs, to be removed in following passes + unusedImport := map[string]bool{} + for pkg, is := range decls { + if refs[pkg] == nil && pkg != "_" && pkg != "." { + unusedImport[strings.Trim(is.Path.Value, `"`)] = true + } + } + for ipath := range unusedImport { + if ipath == "C" { + // Don't remove cgo stuff. + continue + } + astutil.DeleteImport(fset, f, ipath) + } + + return added, nil +} + +// importPathToName returns the package name for the given import path. +var importPathToName = importPathToNameGoPath + +// importPathToNameBasic assumes the package name is the base of import path. +func importPathToNameBasic(importPath string) (packageName string) { + return path.Base(importPath) +} + +// importPathToNameGoPath finds out the actual package name, as declared in its .go files. +// If there's a problem, it falls back to using importPathToNameBasic. +func importPathToNameGoPath(importPath string) (packageName string) { + if buildPkg, err := build.Import(importPath, "", 0); err == nil { + return buildPkg.Name + } else { + return importPathToNameBasic(importPath) + } +} + +type pkg struct { + importpath string // full pkg import path, e.g. "net/http" + dir string // absolute file path to pkg directory e.g. "/usr/lib/go/src/fmt" +} + +var pkgIndexOnce sync.Once + +var pkgIndex struct { + sync.Mutex + m map[string][]pkg // shortname => []pkg, e.g "http" => "net/http" +} + +// gate is a semaphore for limiting concurrency. +type gate chan struct{} + +func (g gate) enter() { g <- struct{}{} } +func (g gate) leave() { <-g } + +// fsgate protects the OS & filesystem from too much concurrency. +// Too much disk I/O -> too many threads -> swapping and bad scheduling. +var fsgate = make(gate, 8) + +func loadPkgIndex() { + pkgIndex.Lock() + pkgIndex.m = make(map[string][]pkg) + pkgIndex.Unlock() + + var wg sync.WaitGroup + for _, path := range build.Default.SrcDirs() { + fsgate.enter() + f, err := os.Open(path) + if err != nil { + fsgate.leave() + fmt.Fprint(os.Stderr, err) + continue + } + children, err := f.Readdir(-1) + f.Close() + fsgate.leave() + if err != nil { + fmt.Fprint(os.Stderr, err) + continue + } + for _, child := range children { + if child.IsDir() { + wg.Add(1) + go func(path, name string) { + defer wg.Done() + loadPkg(&wg, path, name) + }(path, child.Name()) + } + } + } + wg.Wait() +} + +func loadPkg(wg *sync.WaitGroup, root, pkgrelpath string) { + importpath := filepath.ToSlash(pkgrelpath) + dir := filepath.Join(root, importpath) + + fsgate.enter() + defer fsgate.leave() + pkgDir, err := os.Open(dir) + if err != nil { + return + } + children, err := pkgDir.Readdir(-1) + pkgDir.Close() + if err != nil { + return + } + // hasGo tracks whether a directory actually appears to be a + // Go source code directory. If $GOPATH == $HOME, and + // $HOME/src has lots of other large non-Go projects in it, + // then the calls to importPathToName below can be expensive. + hasGo := false + for _, child := range children { + // Avoid .foo, _foo, and testdata directory trees. + name := child.Name() + if name == "" || name[0] == '.' || name[0] == '_' || name == "testdata" { + continue + } + if strings.HasSuffix(name, ".go") { + hasGo = true + } + if child.IsDir() { + wg.Add(1) + go func(root, name string) { + defer wg.Done() + loadPkg(wg, root, name) + }(root, filepath.Join(importpath, name)) + } + } + if hasGo { + shortName := importPathToName(importpath) + pkgIndex.Lock() + pkgIndex.m[shortName] = append(pkgIndex.m[shortName], pkg{ + importpath: importpath, + dir: dir, + }) + pkgIndex.Unlock() + } + +} + +// loadExports returns a list exports for a package. +var loadExports = loadExportsGoPath + +func loadExportsGoPath(dir string) map[string]bool { + exports := make(map[string]bool) + buildPkg, err := build.ImportDir(dir, 0) + if err != nil { + if strings.Contains(err.Error(), "no buildable Go source files in") { + return nil + } + fmt.Fprintf(os.Stderr, "could not import %q: %v\n", dir, err) + return nil + } + fset := token.NewFileSet() + for _, files := range [...][]string{buildPkg.GoFiles, buildPkg.CgoFiles} { + for _, file := range files { + f, err := parser.ParseFile(fset, filepath.Join(dir, file), nil, 0) + if err != nil { + fmt.Fprintf(os.Stderr, "could not parse %q: %v\n", file, err) + continue + } + for name := range f.Scope.Objects { + if ast.IsExported(name) { + exports[name] = true + } + } + } + } + return exports +} + +// findImport searches for a package with the given symbols. +// If no package is found, findImport returns "". +// Declared as a variable rather than a function so goimports can be easily +// extended by adding a file with an init function. +var findImport = findImportGoPath + +func findImportGoPath(pkgName string, symbols map[string]bool) (string, bool, error) { + // Fast path for the standard library. + // In the common case we hopefully never have to scan the GOPATH, which can + // be slow with moving disks. + if pkg, rename, ok := findImportStdlib(pkgName, symbols); ok { + return pkg, rename, nil + } + + // TODO(sameer): look at the import lines for other Go files in the + // local directory, since the user is likely to import the same packages + // in the current Go file. Return rename=true when the other Go files + // use a renamed package that's also used in the current file. + + pkgIndexOnce.Do(loadPkgIndex) + + // Collect exports for packages with matching names. + var wg sync.WaitGroup + var pkgsMu sync.Mutex // guards pkgs + // full importpath => exported symbol => True + // e.g. "net/http" => "Client" => True + pkgs := make(map[string]map[string]bool) + pkgIndex.Lock() + for _, pkg := range pkgIndex.m[pkgName] { + wg.Add(1) + go func(importpath, dir string) { + defer wg.Done() + exports := loadExports(dir) + if exports != nil { + pkgsMu.Lock() + pkgs[importpath] = exports + pkgsMu.Unlock() + } + }(pkg.importpath, pkg.dir) + } + pkgIndex.Unlock() + wg.Wait() + + // Filter out packages missing required exported symbols. + for symbol := range symbols { + for importpath, exports := range pkgs { + if !exports[symbol] { + delete(pkgs, importpath) + } + } + } + if len(pkgs) == 0 { + return "", false, nil + } + + // If there are multiple candidate packages, the shortest one wins. + // This is a heuristic to prefer the standard library (e.g. "bytes") + // over e.g. "github.com/foo/bar/bytes". + shortest := "" + for importPath := range pkgs { + if shortest == "" || len(importPath) < len(shortest) { + shortest = importPath + } + } + return shortest, false, nil +} + +type visitFn func(node ast.Node) ast.Visitor + +func (fn visitFn) Visit(node ast.Node) ast.Visitor { + return fn(node) +} + +func findImportStdlib(shortPkg string, symbols map[string]bool) (importPath string, rename, ok bool) { + for symbol := range symbols { + path := stdlib[shortPkg+"."+symbol] + if path == "" { + return "", false, false + } + if importPath != "" && importPath != path { + // Ambiguous. Symbols pointed to different things. + return "", false, false + } + importPath = path + } + return importPath, false, importPath != "" +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/imports/fix_test.go b/Godeps/_workspace/src/golang.org/x/tools/imports/fix_test.go new file mode 100644 index 0000000000..6be1d578e1 --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/imports/fix_test.go @@ -0,0 +1,844 @@ +// Copyright 2013 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package imports + +import ( + "flag" + "go/build" + "io/ioutil" + "os" + "path/filepath" + "sync" + "testing" +) + +var only = flag.String("only", "", "If non-empty, the fix test to run") + +var tests = []struct { + name string + in, out string +}{ + // Adding an import to an existing parenthesized import + { + name: "factored_imports_add", + in: `package foo +import ( + "fmt" +) +func bar() { +var b bytes.Buffer +fmt.Println(b.String()) +} +`, + out: `package foo + +import ( + "bytes" + "fmt" +) + +func bar() { + var b bytes.Buffer + fmt.Println(b.String()) +} +`, + }, + + // Adding an import to an existing parenthesized import, + // verifying it goes into the first section. + { + name: "factored_imports_add_first_sec", + in: `package foo +import ( + "fmt" + + "appengine" +) +func bar() { +var b bytes.Buffer +_ = appengine.IsDevServer +fmt.Println(b.String()) +} +`, + out: `package foo + +import ( + "bytes" + "fmt" + + "appengine" +) + +func bar() { + var b bytes.Buffer + _ = appengine.IsDevServer + fmt.Println(b.String()) +} +`, + }, + + // Adding an import to an existing parenthesized import, + // verifying it goes into the first section. (test 2) + { + name: "factored_imports_add_first_sec_2", + in: `package foo +import ( + "fmt" + + "appengine" +) +func bar() { +_ = math.NaN +_ = fmt.Sprintf +_ = appengine.IsDevServer +} +`, + out: `package foo + +import ( + "fmt" + "math" + + "appengine" +) + +func bar() { + _ = math.NaN + _ = fmt.Sprintf + _ = appengine.IsDevServer +} +`, + }, + + // Adding a new import line, without parens + { + name: "add_import_section", + in: `package foo +func bar() { +var b bytes.Buffer +} +`, + out: `package foo + +import "bytes" + +func bar() { + var b bytes.Buffer +} +`, + }, + + // Adding two new imports, which should make a parenthesized import decl. + { + name: "add_import_paren_section", + in: `package foo +func bar() { +_, _ := bytes.Buffer, zip.NewReader +} +`, + out: `package foo + +import ( + "archive/zip" + "bytes" +) + +func bar() { + _, _ := bytes.Buffer, zip.NewReader +} +`, + }, + + // Make sure we don't add things twice + { + name: "no_double_add", + in: `package foo +func bar() { +_, _ := bytes.Buffer, bytes.NewReader +} +`, + out: `package foo + +import "bytes" + +func bar() { + _, _ := bytes.Buffer, bytes.NewReader +} +`, + }, + + // Remove unused imports, 1 of a factored block + { + name: "remove_unused_1_of_2", + in: `package foo +import ( +"bytes" +"fmt" +) + +func bar() { +_, _ := bytes.Buffer, bytes.NewReader +} +`, + out: `package foo + +import "bytes" + +func bar() { + _, _ := bytes.Buffer, bytes.NewReader +} +`, + }, + + // Remove unused imports, 2 of 2 + { + name: "remove_unused_2_of_2", + in: `package foo +import ( +"bytes" +"fmt" +) + +func bar() { +} +`, + out: `package foo + +func bar() { +} +`, + }, + + // Remove unused imports, 1 of 1 + { + name: "remove_unused_1_of_1", + in: `package foo + +import "fmt" + +func bar() { +} +`, + out: `package foo + +func bar() { +} +`, + }, + + // Don't remove empty imports. + { + name: "dont_remove_empty_imports", + in: `package foo +import ( +_ "image/png" +_ "image/jpeg" +) +`, + out: `package foo + +import ( + _ "image/jpeg" + _ "image/png" +) +`, + }, + + // Don't remove dot imports. + { + name: "dont_remove_dot_imports", + in: `package foo +import ( +. "foo" +. "bar" +) +`, + out: `package foo + +import ( + . "bar" + . "foo" +) +`, + }, + + // Skip refs the parser can resolve. + { + name: "skip_resolved_refs", + in: `package foo + +func f() { + type t struct{ Println func(string) } + fmt := t{Println: func(string) {}} + fmt.Println("foo") +} +`, + out: `package foo + +func f() { + type t struct{ Println func(string) } + fmt := t{Println: func(string) {}} + fmt.Println("foo") +} +`, + }, + + // Do not add a package we already have a resolution for. + { + name: "skip_template", + in: `package foo + +import "html/template" + +func f() { t = template.New("sometemplate") } +`, + out: `package foo + +import "html/template" + +func f() { t = template.New("sometemplate") } +`, + }, + + // Don't touch cgo + { + name: "cgo", + in: `package foo + +/* +#include +*/ +import "C" +`, + out: `package foo + +/* +#include +*/ +import "C" +`, + }, + + // Put some things in their own section + { + name: "make_sections", + in: `package foo + +import ( +"os" +) + +func foo () { +_, _ = os.Args, fmt.Println +_, _ = appengine.FooSomething, user.Current +} +`, + out: `package foo + +import ( + "fmt" + "os" + + "appengine" + "appengine/user" +) + +func foo() { + _, _ = os.Args, fmt.Println + _, _ = appengine.FooSomething, user.Current +} +`, + }, + + // Delete existing empty import block + { + name: "delete_empty_import_block", + in: `package foo + +import () +`, + out: `package foo +`, + }, + + // Use existing empty import block + { + name: "use_empty_import_block", + in: `package foo + +import () + +func f() { + _ = fmt.Println +} +`, + out: `package foo + +import "fmt" + +func f() { + _ = fmt.Println +} +`, + }, + + // Blank line before adding new section. + { + name: "blank_line_before_new_group", + in: `package foo + +import ( + "fmt" + "net" +) + +func f() { + _ = net.Dial + _ = fmt.Printf + _ = snappy.Foo +} +`, + out: `package foo + +import ( + "fmt" + "net" + + "code.google.com/p/snappy-go/snappy" +) + +func f() { + _ = net.Dial + _ = fmt.Printf + _ = snappy.Foo +} +`, + }, + + // Blank line between standard library and third-party stuff. + { + name: "blank_line_separating_std_and_third_party", + in: `package foo + +import ( + "code.google.com/p/snappy-go/snappy" + "fmt" + "net" +) + +func f() { + _ = net.Dial + _ = fmt.Printf + _ = snappy.Foo +} +`, + out: `package foo + +import ( + "fmt" + "net" + + "code.google.com/p/snappy-go/snappy" +) + +func f() { + _ = net.Dial + _ = fmt.Printf + _ = snappy.Foo +} +`, + }, + + // golang.org/issue/6884 + { + name: "issue 6884", + in: `package main + +// A comment +func main() { + fmt.Println("Hello, world") +} +`, + out: `package main + +import "fmt" + +// A comment +func main() { + fmt.Println("Hello, world") +} +`, + }, + + // golang.org/issue/7132 + { + name: "issue 7132", + in: `package main + +import ( +"fmt" + +"gu" +"github.com/foo/bar" +) + +var ( +a = bar.a +b = gu.a +c = fmt.Printf +) +`, + out: `package main + +import ( + "fmt" + + "gu" + + "github.com/foo/bar" +) + +var ( + a = bar.a + b = gu.a + c = fmt.Printf +) +`, + }, + + { + name: "renamed package", + in: `package main + +var _ = str.HasPrefix +`, + out: `package main + +import str "strings" + +var _ = str.HasPrefix +`, + }, + + { + name: "fragment with main", + in: `func main(){fmt.Println("Hello, world")}`, + out: `package main + +import "fmt" + +func main() { fmt.Println("Hello, world") } +`, + }, + + { + name: "fragment without main", + in: `func notmain(){fmt.Println("Hello, world")}`, + out: `import "fmt" + +func notmain() { fmt.Println("Hello, world") }`, + }, + + // Remove first import within in a 2nd/3rd/4th/etc. section. + // golang.org/issue/7679 + { + name: "issue 7679", + in: `package main + +import ( + "fmt" + + "github.com/foo/bar" + "github.com/foo/qux" +) + +func main() { + var _ = fmt.Println + //var _ = bar.A + var _ = qux.B +} +`, + out: `package main + +import ( + "fmt" + + "github.com/foo/qux" +) + +func main() { + var _ = fmt.Println + //var _ = bar.A + var _ = qux.B +} +`, + }, + + // Blank line can be added before all types of import declarations. + // golang.org/issue/7866 + { + name: "issue 7866", + in: `package main + +import ( + "fmt" + renamed_bar "github.com/foo/bar" + + . "github.com/foo/baz" + "io" + + _ "github.com/foo/qux" + "strings" +) + +func main() { + _, _, _, _, _ = fmt.Errorf, io.Copy, strings.Contains, renamed_bar.A, B +} +`, + out: `package main + +import ( + "fmt" + + renamed_bar "github.com/foo/bar" + + "io" + + . "github.com/foo/baz" + + "strings" + + _ "github.com/foo/qux" +) + +func main() { + _, _, _, _, _ = fmt.Errorf, io.Copy, strings.Contains, renamed_bar.A, B +} +`, + }, + + // Non-idempotent comment formatting + // golang.org/issue/8035 + { + name: "issue 8035", + in: `package main + +import ( + "fmt" // A + "go/ast" // B + _ "launchpad.net/gocheck" // C +) + +func main() { _, _ = fmt.Print, ast.Walk } +`, + out: `package main + +import ( + "fmt" // A + "go/ast" // B + + _ "launchpad.net/gocheck" // C +) + +func main() { _, _ = fmt.Print, ast.Walk } +`, + }, + + // Failure to delete all duplicate imports + // golang.org/issue/8459 + { + name: "issue 8459", + in: `package main + +import ( + "fmt" + "log" + "log" + "math" +) + +func main() { fmt.Println("pi:", math.Pi) } +`, + out: `package main + +import ( + "fmt" + "math" +) + +func main() { fmt.Println("pi:", math.Pi) } +`, + }, + + // Too aggressive prefix matching + // golang.org/issue/9961 + { + name: "issue 9961", + in: `package p + +import ( + "zip" + + "rsc.io/p" +) + +var ( + _ = fmt.Print + _ = zip.Store + _ p.P + _ = regexp.Compile +) +`, + out: `package p + +import ( + "fmt" + "regexp" + "zip" + + "rsc.io/p" +) + +var ( + _ = fmt.Print + _ = zip.Store + _ p.P + _ = regexp.Compile +) +`, + }, +} + +func TestFixImports(t *testing.T) { + simplePkgs := map[string]string{ + "appengine": "appengine", + "bytes": "bytes", + "fmt": "fmt", + "math": "math", + "os": "os", + "p": "rsc.io/p", + "regexp": "regexp", + "snappy": "code.google.com/p/snappy-go/snappy", + "str": "strings", + "user": "appengine/user", + "zip": "archive/zip", + } + findImport = func(pkgName string, symbols map[string]bool) (string, bool, error) { + return simplePkgs[pkgName], pkgName == "str", nil + } + + options := &Options{ + TabWidth: 8, + TabIndent: true, + Comments: true, + Fragment: true, + } + + for _, tt := range tests { + if *only != "" && tt.name != *only { + continue + } + buf, err := Process(tt.name+".go", []byte(tt.in), options) + if err != nil { + t.Errorf("error on %q: %v", tt.name, err) + continue + } + if got := string(buf); got != tt.out { + t.Errorf("results diff on %q\nGOT:\n%s\nWANT:\n%s\n", tt.name, got, tt.out) + } + } +} + +func TestFindImportGoPath(t *testing.T) { + goroot, err := ioutil.TempDir("", "goimports-") + if err != nil { + t.Fatal(err) + } + defer os.RemoveAll(goroot) + + pkgIndexOnce = sync.Once{} + + origStdlib := stdlib + defer func() { + stdlib = origStdlib + }() + stdlib = nil + + // Test against imaginary bits/bytes package in std lib + bytesDir := filepath.Join(goroot, "src", "pkg", "bits", "bytes") + for _, tag := range build.Default.ReleaseTags { + // Go 1.4 rearranged the GOROOT tree to remove the "pkg" path component. + if tag == "go1.4" { + bytesDir = filepath.Join(goroot, "src", "bits", "bytes") + } + } + if err := os.MkdirAll(bytesDir, 0755); err != nil { + t.Fatal(err) + } + bytesSrcPath := filepath.Join(bytesDir, "bytes.go") + bytesPkgPath := "bits/bytes" + bytesSrc := []byte(`package bytes + +type Buffer2 struct {} +`) + if err := ioutil.WriteFile(bytesSrcPath, bytesSrc, 0775); err != nil { + t.Fatal(err) + } + oldGOROOT := build.Default.GOROOT + oldGOPATH := build.Default.GOPATH + build.Default.GOROOT = goroot + build.Default.GOPATH = "" + defer func() { + build.Default.GOROOT = oldGOROOT + build.Default.GOPATH = oldGOPATH + }() + + got, rename, err := findImportGoPath("bytes", map[string]bool{"Buffer2": true}) + if err != nil { + t.Fatal(err) + } + if got != bytesPkgPath || rename { + t.Errorf(`findImportGoPath("bytes", Buffer2 ...)=%q, %t, want "%s", false`, got, rename, bytesPkgPath) + } + + got, rename, err = findImportGoPath("bytes", map[string]bool{"Missing": true}) + if err != nil { + t.Fatal(err) + } + if got != "" || rename { + t.Errorf(`findImportGoPath("bytes", Missing ...)=%q, %t, want "", false`, got, rename) + } +} + +func TestFindImportStdlib(t *testing.T) { + tests := []struct { + pkg string + symbols []string + want string + }{ + {"http", []string{"Get"}, "net/http"}, + {"http", []string{"Get", "Post"}, "net/http"}, + {"http", []string{"Get", "Foo"}, ""}, + {"bytes", []string{"Buffer"}, "bytes"}, + {"ioutil", []string{"Discard"}, "io/ioutil"}, + } + for _, tt := range tests { + got, rename, ok := findImportStdlib(tt.pkg, strSet(tt.symbols)) + if (got != "") != ok { + t.Error("findImportStdlib return value inconsistent") + } + if got != tt.want || rename { + t.Errorf("findImportStdlib(%q, %q) = %q, %t; want %q, false", tt.pkg, tt.symbols, got, rename, tt.want) + } + } +} + +func strSet(ss []string) map[string]bool { + m := make(map[string]bool) + for _, s := range ss { + m[s] = true + } + return m +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/imports/imports.go b/Godeps/_workspace/src/golang.org/x/tools/imports/imports.go new file mode 100644 index 0000000000..3c83d1d4cc --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/imports/imports.go @@ -0,0 +1,279 @@ +// Copyright 2013 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// Package imports implements a Go pretty-printer (like package "go/format") +// that also adds or removes import statements as necessary. +package imports + +import ( + "bufio" + "bytes" + "fmt" + "go/ast" + "go/format" + "go/parser" + "go/printer" + "go/token" + "io" + "regexp" + "strconv" + "strings" + + "golang.org/x/tools/go/ast/astutil" +) + +// Options specifies options for processing files. +type Options struct { + Fragment bool // Accept fragment of a source file (no package statement) + AllErrors bool // Report all errors (not just the first 10 on different lines) + + Comments bool // Print comments (true if nil *Options provided) + TabIndent bool // Use tabs for indent (true if nil *Options provided) + TabWidth int // Tab width (8 if nil *Options provided) +} + +// Process formats and adjusts imports for the provided file. +// If opt is nil the defaults are used. +func Process(filename string, src []byte, opt *Options) ([]byte, error) { + if opt == nil { + opt = &Options{Comments: true, TabIndent: true, TabWidth: 8} + } + + fileSet := token.NewFileSet() + file, adjust, err := parse(fileSet, filename, src, opt) + if err != nil { + return nil, err + } + + _, err = fixImports(fileSet, file) + if err != nil { + return nil, err + } + + sortImports(fileSet, file) + imps := astutil.Imports(fileSet, file) + + var spacesBefore []string // import paths we need spaces before + for _, impSection := range imps { + // Within each block of contiguous imports, see if any + // import lines are in different group numbers. If so, + // we'll need to put a space between them so it's + // compatible with gofmt. + lastGroup := -1 + for _, importSpec := range impSection { + importPath, _ := strconv.Unquote(importSpec.Path.Value) + groupNum := importGroup(importPath) + if groupNum != lastGroup && lastGroup != -1 { + spacesBefore = append(spacesBefore, importPath) + } + lastGroup = groupNum + } + + } + + printerMode := printer.UseSpaces + if opt.TabIndent { + printerMode |= printer.TabIndent + } + printConfig := &printer.Config{Mode: printerMode, Tabwidth: opt.TabWidth} + + var buf bytes.Buffer + err = printConfig.Fprint(&buf, fileSet, file) + if err != nil { + return nil, err + } + out := buf.Bytes() + if adjust != nil { + out = adjust(src, out) + } + if len(spacesBefore) > 0 { + out = addImportSpaces(bytes.NewReader(out), spacesBefore) + } + + out, err = format.Source(out) + if err != nil { + return nil, err + } + return out, nil +} + +// parse parses src, which was read from filename, +// as a Go source file or statement list. +func parse(fset *token.FileSet, filename string, src []byte, opt *Options) (*ast.File, func(orig, src []byte) []byte, error) { + parserMode := parser.Mode(0) + if opt.Comments { + parserMode |= parser.ParseComments + } + if opt.AllErrors { + parserMode |= parser.AllErrors + } + + // Try as whole source file. + file, err := parser.ParseFile(fset, filename, src, parserMode) + if err == nil { + return file, nil, nil + } + // If the error is that the source file didn't begin with a + // package line and we accept fragmented input, fall through to + // try as a source fragment. Stop and return on any other error. + if !opt.Fragment || !strings.Contains(err.Error(), "expected 'package'") { + return nil, nil, err + } + + // If this is a declaration list, make it a source file + // by inserting a package clause. + // Insert using a ;, not a newline, so that the line numbers + // in psrc match the ones in src. + psrc := append([]byte("package main;"), src...) + file, err = parser.ParseFile(fset, filename, psrc, parserMode) + if err == nil { + // If a main function exists, we will assume this is a main + // package and leave the file. + if containsMainFunc(file) { + return file, nil, nil + } + + adjust := func(orig, src []byte) []byte { + // Remove the package clause. + // Gofmt has turned the ; into a \n. + src = src[len("package main\n"):] + return matchSpace(orig, src) + } + return file, adjust, nil + } + // If the error is that the source file didn't begin with a + // declaration, fall through to try as a statement list. + // Stop and return on any other error. + if !strings.Contains(err.Error(), "expected declaration") { + return nil, nil, err + } + + // If this is a statement list, make it a source file + // by inserting a package clause and turning the list + // into a function body. This handles expressions too. + // Insert using a ;, not a newline, so that the line numbers + // in fsrc match the ones in src. + fsrc := append(append([]byte("package p; func _() {"), src...), '}') + file, err = parser.ParseFile(fset, filename, fsrc, parserMode) + if err == nil { + adjust := func(orig, src []byte) []byte { + // Remove the wrapping. + // Gofmt has turned the ; into a \n\n. + src = src[len("package p\n\nfunc _() {"):] + src = src[:len(src)-len("}\n")] + // Gofmt has also indented the function body one level. + // Remove that indent. + src = bytes.Replace(src, []byte("\n\t"), []byte("\n"), -1) + return matchSpace(orig, src) + } + return file, adjust, nil + } + + // Failed, and out of options. + return nil, nil, err +} + +// containsMainFunc checks if a file contains a function declaration with the +// function signature 'func main()' +func containsMainFunc(file *ast.File) bool { + for _, decl := range file.Decls { + if f, ok := decl.(*ast.FuncDecl); ok { + if f.Name.Name != "main" { + continue + } + + if len(f.Type.Params.List) != 0 { + continue + } + + if f.Type.Results != nil && len(f.Type.Results.List) != 0 { + continue + } + + return true + } + } + + return false +} + +func cutSpace(b []byte) (before, middle, after []byte) { + i := 0 + for i < len(b) && (b[i] == ' ' || b[i] == '\t' || b[i] == '\n') { + i++ + } + j := len(b) + for j > 0 && (b[j-1] == ' ' || b[j-1] == '\t' || b[j-1] == '\n') { + j-- + } + if i <= j { + return b[:i], b[i:j], b[j:] + } + return nil, nil, b[j:] +} + +// matchSpace reformats src to use the same space context as orig. +// 1) If orig begins with blank lines, matchSpace inserts them at the beginning of src. +// 2) matchSpace copies the indentation of the first non-blank line in orig +// to every non-blank line in src. +// 3) matchSpace copies the trailing space from orig and uses it in place +// of src's trailing space. +func matchSpace(orig []byte, src []byte) []byte { + before, _, after := cutSpace(orig) + i := bytes.LastIndex(before, []byte{'\n'}) + before, indent := before[:i+1], before[i+1:] + + _, src, _ = cutSpace(src) + + var b bytes.Buffer + b.Write(before) + for len(src) > 0 { + line := src + if i := bytes.IndexByte(line, '\n'); i >= 0 { + line, src = line[:i+1], line[i+1:] + } else { + src = nil + } + if len(line) > 0 && line[0] != '\n' { // not blank + b.Write(indent) + } + b.Write(line) + } + b.Write(after) + return b.Bytes() +} + +var impLine = regexp.MustCompile(`^\s+(?:[\w\.]+\s+)?"(.+)"`) + +func addImportSpaces(r io.Reader, breaks []string) []byte { + var out bytes.Buffer + sc := bufio.NewScanner(r) + inImports := false + done := false + for sc.Scan() { + s := sc.Text() + + if !inImports && !done && strings.HasPrefix(s, "import") { + inImports = true + } + if inImports && (strings.HasPrefix(s, "var") || + strings.HasPrefix(s, "func") || + strings.HasPrefix(s, "const") || + strings.HasPrefix(s, "type")) { + done = true + inImports = false + } + if inImports && len(breaks) > 0 { + if m := impLine.FindStringSubmatch(s); m != nil { + if m[1] == string(breaks[0]) { + out.WriteByte('\n') + breaks = breaks[1:] + } + } + } + + fmt.Fprintln(&out, s) + } + return out.Bytes() +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/imports/mkindex.go b/Godeps/_workspace/src/golang.org/x/tools/imports/mkindex.go new file mode 100644 index 0000000000..755e2394f2 --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/imports/mkindex.go @@ -0,0 +1,173 @@ +// +build ignore + +// Copyright 2013 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// Command mkindex creates the file "pkgindex.go" containing an index of the Go +// standard library. The file is intended to be built as part of the imports +// package, so that the package may be used in environments where a GOROOT is +// not available (such as App Engine). +package main + +import ( + "bytes" + "fmt" + "go/ast" + "go/build" + "go/format" + "go/parser" + "go/token" + "io/ioutil" + "log" + "os" + "path" + "path/filepath" + "strings" +) + +var ( + pkgIndex = make(map[string][]pkg) + exports = make(map[string]map[string]bool) +) + +func main() { + // Don't use GOPATH. + ctx := build.Default + ctx.GOPATH = "" + + // Populate pkgIndex global from GOROOT. + for _, path := range ctx.SrcDirs() { + f, err := os.Open(path) + if err != nil { + log.Print(err) + continue + } + children, err := f.Readdir(-1) + f.Close() + if err != nil { + log.Print(err) + continue + } + for _, child := range children { + if child.IsDir() { + loadPkg(path, child.Name()) + } + } + } + // Populate exports global. + for _, ps := range pkgIndex { + for _, p := range ps { + e := loadExports(p.dir) + if e != nil { + exports[p.dir] = e + } + } + } + + // Construct source file. + var buf bytes.Buffer + fmt.Fprint(&buf, pkgIndexHead) + fmt.Fprintf(&buf, "var pkgIndexMaster = %#v\n", pkgIndex) + fmt.Fprintf(&buf, "var exportsMaster = %#v\n", exports) + src := buf.Bytes() + + // Replace main.pkg type name with pkg. + src = bytes.Replace(src, []byte("main.pkg"), []byte("pkg"), -1) + // Replace actual GOROOT with "/go". + src = bytes.Replace(src, []byte(ctx.GOROOT), []byte("/go"), -1) + // Add some line wrapping. + src = bytes.Replace(src, []byte("}, "), []byte("},\n"), -1) + src = bytes.Replace(src, []byte("true, "), []byte("true,\n"), -1) + + var err error + src, err = format.Source(src) + if err != nil { + log.Fatal(err) + } + + // Write out source file. + err = ioutil.WriteFile("pkgindex.go", src, 0644) + if err != nil { + log.Fatal(err) + } +} + +const pkgIndexHead = `package imports + +func init() { + pkgIndexOnce.Do(func() { + pkgIndex.m = pkgIndexMaster + }) + loadExports = func(dir string) map[string]bool { + return exportsMaster[dir] + } +} +` + +type pkg struct { + importpath string // full pkg import path, e.g. "net/http" + dir string // absolute file path to pkg directory e.g. "/usr/lib/go/src/fmt" +} + +var fset = token.NewFileSet() + +func loadPkg(root, importpath string) { + shortName := path.Base(importpath) + if shortName == "testdata" { + return + } + + dir := filepath.Join(root, importpath) + pkgIndex[shortName] = append(pkgIndex[shortName], pkg{ + importpath: importpath, + dir: dir, + }) + + pkgDir, err := os.Open(dir) + if err != nil { + return + } + children, err := pkgDir.Readdir(-1) + pkgDir.Close() + if err != nil { + return + } + for _, child := range children { + name := child.Name() + if name == "" { + continue + } + if c := name[0]; c == '.' || ('0' <= c && c <= '9') { + continue + } + if child.IsDir() { + loadPkg(root, filepath.Join(importpath, name)) + } + } +} + +func loadExports(dir string) map[string]bool { + exports := make(map[string]bool) + buildPkg, err := build.ImportDir(dir, 0) + if err != nil { + if strings.Contains(err.Error(), "no buildable Go source files in") { + return nil + } + log.Printf("could not import %q: %v", dir, err) + return nil + } + for _, file := range buildPkg.GoFiles { + f, err := parser.ParseFile(fset, filepath.Join(dir, file), nil, 0) + if err != nil { + log.Printf("could not parse %q: %v", file, err) + continue + } + for name := range f.Scope.Objects { + if ast.IsExported(name) { + exports[name] = true + } + } + } + return exports +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/imports/mkstdlib.go b/Godeps/_workspace/src/golang.org/x/tools/imports/mkstdlib.go new file mode 100644 index 0000000000..c43d3255a3 --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/imports/mkstdlib.go @@ -0,0 +1,90 @@ +// +build ignore + +// mkstdlib generates the zstdlib.go file, containing the Go standard +// library API symbols. It's baked into the binary to avoid scanning +// GOPATH in the common case. +package main + +import ( + "bufio" + "bytes" + "fmt" + "go/format" + "io" + "log" + "os" + "path" + "path/filepath" + "regexp" + "sort" + "strings" +) + +func mustOpen(name string) io.Reader { + f, err := os.Open(name) + if err != nil { + log.Fatal(err) + } + return f +} + +func api(base string) string { + return filepath.Join(os.Getenv("GOROOT"), "api", base) +} + +var sym = regexp.MustCompile(`^pkg (\S+).*?, (?:var|func|type|const) ([A-Z]\w*)`) + +func main() { + var buf bytes.Buffer + outf := func(format string, args ...interface{}) { + fmt.Fprintf(&buf, format, args...) + } + outf("// AUTO-GENERATED BY mkstdlib.go\n\n") + outf("package imports\n") + outf("var stdlib = map[string]string{\n") + f := io.MultiReader( + mustOpen(api("go1.txt")), + mustOpen(api("go1.1.txt")), + mustOpen(api("go1.2.txt")), + ) + sc := bufio.NewScanner(f) + fullImport := map[string]string{} // "zip.NewReader" => "archive/zip" + ambiguous := map[string]bool{} + var keys []string + for sc.Scan() { + l := sc.Text() + has := func(v string) bool { return strings.Contains(l, v) } + if has("struct, ") || has("interface, ") || has(", method (") { + continue + } + if m := sym.FindStringSubmatch(l); m != nil { + full := m[1] + key := path.Base(full) + "." + m[2] + if exist, ok := fullImport[key]; ok { + if exist != full { + ambiguous[key] = true + } + } else { + fullImport[key] = full + keys = append(keys, key) + } + } + } + if err := sc.Err(); err != nil { + log.Fatal(err) + } + sort.Strings(keys) + for _, key := range keys { + if ambiguous[key] { + outf("\t// %q is ambiguous\n", key) + } else { + outf("\t%q: %q,\n", key, fullImport[key]) + } + } + outf("}\n") + fmtbuf, err := format.Source(buf.Bytes()) + if err != nil { + log.Fatal(err) + } + os.Stdout.Write(fmtbuf) +} diff --git a/Godeps/_workspace/src/golang.org/x/tools/imports/sortimports.go b/Godeps/_workspace/src/golang.org/x/tools/imports/sortimports.go new file mode 100644 index 0000000000..68b3dc4eca --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/imports/sortimports.go @@ -0,0 +1,214 @@ +// +build go1.2 + +// Copyright 2013 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// Hacked up copy of go/ast/import.go + +package imports + +import ( + "go/ast" + "go/token" + "sort" + "strconv" +) + +// sortImports sorts runs of consecutive import lines in import blocks in f. +// It also removes duplicate imports when it is possible to do so without data loss. +func sortImports(fset *token.FileSet, f *ast.File) { + for i, d := range f.Decls { + d, ok := d.(*ast.GenDecl) + if !ok || d.Tok != token.IMPORT { + // Not an import declaration, so we're done. + // Imports are always first. + break + } + + if len(d.Specs) == 0 { + // Empty import block, remove it. + f.Decls = append(f.Decls[:i], f.Decls[i+1:]...) + } + + if !d.Lparen.IsValid() { + // Not a block: sorted by default. + continue + } + + // Identify and sort runs of specs on successive lines. + i := 0 + specs := d.Specs[:0] + for j, s := range d.Specs { + if j > i && fset.Position(s.Pos()).Line > 1+fset.Position(d.Specs[j-1].End()).Line { + // j begins a new run. End this one. + specs = append(specs, sortSpecs(fset, f, d.Specs[i:j])...) + i = j + } + } + specs = append(specs, sortSpecs(fset, f, d.Specs[i:])...) + d.Specs = specs + + // Deduping can leave a blank line before the rparen; clean that up. + if len(d.Specs) > 0 { + lastSpec := d.Specs[len(d.Specs)-1] + lastLine := fset.Position(lastSpec.Pos()).Line + if rParenLine := fset.Position(d.Rparen).Line; rParenLine > lastLine+1 { + fset.File(d.Rparen).MergeLine(rParenLine - 1) + } + } + } +} + +func importPath(s ast.Spec) string { + t, err := strconv.Unquote(s.(*ast.ImportSpec).Path.Value) + if err == nil { + return t + } + return "" +} + +func importName(s ast.Spec) string { + n := s.(*ast.ImportSpec).Name + if n == nil { + return "" + } + return n.Name +} + +func importComment(s ast.Spec) string { + c := s.(*ast.ImportSpec).Comment + if c == nil { + return "" + } + return c.Text() +} + +// collapse indicates whether prev may be removed, leaving only next. +func collapse(prev, next ast.Spec) bool { + if importPath(next) != importPath(prev) || importName(next) != importName(prev) { + return false + } + return prev.(*ast.ImportSpec).Comment == nil +} + +type posSpan struct { + Start token.Pos + End token.Pos +} + +func sortSpecs(fset *token.FileSet, f *ast.File, specs []ast.Spec) []ast.Spec { + // Can't short-circuit here even if specs are already sorted, + // since they might yet need deduplication. + // A lone import, however, may be safely ignored. + if len(specs) <= 1 { + return specs + } + + // Record positions for specs. + pos := make([]posSpan, len(specs)) + for i, s := range specs { + pos[i] = posSpan{s.Pos(), s.End()} + } + + // Identify comments in this range. + // Any comment from pos[0].Start to the final line counts. + lastLine := fset.Position(pos[len(pos)-1].End).Line + cstart := len(f.Comments) + cend := len(f.Comments) + for i, g := range f.Comments { + if g.Pos() < pos[0].Start { + continue + } + if i < cstart { + cstart = i + } + if fset.Position(g.End()).Line > lastLine { + cend = i + break + } + } + comments := f.Comments[cstart:cend] + + // Assign each comment to the import spec preceding it. + importComment := map[*ast.ImportSpec][]*ast.CommentGroup{} + specIndex := 0 + for _, g := range comments { + for specIndex+1 < len(specs) && pos[specIndex+1].Start <= g.Pos() { + specIndex++ + } + s := specs[specIndex].(*ast.ImportSpec) + importComment[s] = append(importComment[s], g) + } + + // Sort the import specs by import path. + // Remove duplicates, when possible without data loss. + // Reassign the import paths to have the same position sequence. + // Reassign each comment to abut the end of its spec. + // Sort the comments by new position. + sort.Sort(byImportSpec(specs)) + + // Dedup. Thanks to our sorting, we can just consider + // adjacent pairs of imports. + deduped := specs[:0] + for i, s := range specs { + if i == len(specs)-1 || !collapse(s, specs[i+1]) { + deduped = append(deduped, s) + } else { + p := s.Pos() + fset.File(p).MergeLine(fset.Position(p).Line) + } + } + specs = deduped + + // Fix up comment positions + for i, s := range specs { + s := s.(*ast.ImportSpec) + if s.Name != nil { + s.Name.NamePos = pos[i].Start + } + s.Path.ValuePos = pos[i].Start + s.EndPos = pos[i].End + for _, g := range importComment[s] { + for _, c := range g.List { + c.Slash = pos[i].End + } + } + } + + sort.Sort(byCommentPos(comments)) + + return specs +} + +type byImportSpec []ast.Spec // slice of *ast.ImportSpec + +func (x byImportSpec) Len() int { return len(x) } +func (x byImportSpec) Swap(i, j int) { x[i], x[j] = x[j], x[i] } +func (x byImportSpec) Less(i, j int) bool { + ipath := importPath(x[i]) + jpath := importPath(x[j]) + + igroup := importGroup(ipath) + jgroup := importGroup(jpath) + if igroup != jgroup { + return igroup < jgroup + } + + if ipath != jpath { + return ipath < jpath + } + iname := importName(x[i]) + jname := importName(x[j]) + + if iname != jname { + return iname < jname + } + return importComment(x[i]) < importComment(x[j]) +} + +type byCommentPos []*ast.CommentGroup + +func (x byCommentPos) Len() int { return len(x) } +func (x byCommentPos) Swap(i, j int) { x[i], x[j] = x[j], x[i] } +func (x byCommentPos) Less(i, j int) bool { return x[i].Pos() < x[j].Pos() } diff --git a/Godeps/_workspace/src/golang.org/x/tools/imports/sortimports_compat.go b/Godeps/_workspace/src/golang.org/x/tools/imports/sortimports_compat.go new file mode 100644 index 0000000000..295f237a79 --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/imports/sortimports_compat.go @@ -0,0 +1,14 @@ +// +build !go1.2 + +// Copyright 2013 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package imports + +import "go/ast" + +// Go 1.1 users don't get fancy package grouping. +// But this is still gofmt-compliant: + +var sortImports = ast.SortImports diff --git a/Godeps/_workspace/src/golang.org/x/tools/imports/zstdlib.go b/Godeps/_workspace/src/golang.org/x/tools/imports/zstdlib.go new file mode 100644 index 0000000000..6cdc03347f --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/tools/imports/zstdlib.go @@ -0,0 +1,8374 @@ +// AUTO-GENERATED BY mkstdlib.go + +package imports + +var stdlib = map[string]string{ + "adler32.Checksum": "hash/adler32", + "adler32.New": "hash/adler32", + "adler32.Size": "hash/adler32", + "aes.BlockSize": "crypto/aes", + "aes.KeySizeError": "crypto/aes", + "aes.NewCipher": "crypto/aes", + "ascii85.CorruptInputError": "encoding/ascii85", + "ascii85.Decode": "encoding/ascii85", + "ascii85.Encode": "encoding/ascii85", + "ascii85.MaxEncodedLen": "encoding/ascii85", + "ascii85.NewDecoder": "encoding/ascii85", + "ascii85.NewEncoder": "encoding/ascii85", + "asn1.BitString": "encoding/asn1", + "asn1.Enumerated": "encoding/asn1", + "asn1.Flag": "encoding/asn1", + "asn1.Marshal": "encoding/asn1", + "asn1.ObjectIdentifier": "encoding/asn1", + "asn1.RawContent": "encoding/asn1", + "asn1.RawValue": "encoding/asn1", + "asn1.StructuralError": "encoding/asn1", + "asn1.SyntaxError": "encoding/asn1", + "asn1.Unmarshal": "encoding/asn1", + "asn1.UnmarshalWithParams": "encoding/asn1", + "ast.ArrayType": "go/ast", + "ast.AssignStmt": "go/ast", + "ast.Bad": "go/ast", + "ast.BadDecl": "go/ast", + "ast.BadExpr": "go/ast", + "ast.BadStmt": "go/ast", + "ast.BasicLit": "go/ast", + "ast.BinaryExpr": "go/ast", + "ast.BlockStmt": "go/ast", + "ast.BranchStmt": "go/ast", + "ast.CallExpr": "go/ast", + "ast.CaseClause": "go/ast", + "ast.ChanDir": "go/ast", + "ast.ChanType": "go/ast", + "ast.CommClause": "go/ast", + "ast.Comment": "go/ast", + "ast.CommentGroup": "go/ast", + "ast.CommentMap": "go/ast", + "ast.CompositeLit": "go/ast", + "ast.Con": "go/ast", + "ast.DeclStmt": "go/ast", + "ast.DeferStmt": "go/ast", + "ast.Ellipsis": "go/ast", + "ast.EmptyStmt": "go/ast", + "ast.ExprStmt": "go/ast", + "ast.Field": "go/ast", + "ast.FieldFilter": "go/ast", + "ast.FieldList": "go/ast", + "ast.File": "go/ast", + "ast.FileExports": "go/ast", + "ast.Filter": "go/ast", + "ast.FilterDecl": "go/ast", + "ast.FilterFile": "go/ast", + "ast.FilterFuncDuplicates": "go/ast", + "ast.FilterImportDuplicates": "go/ast", + "ast.FilterPackage": "go/ast", + "ast.FilterUnassociatedComments": "go/ast", + "ast.ForStmt": "go/ast", + "ast.Fprint": "go/ast", + "ast.Fun": "go/ast", + "ast.FuncDecl": "go/ast", + "ast.FuncLit": "go/ast", + "ast.FuncType": "go/ast", + "ast.GenDecl": "go/ast", + "ast.GoStmt": "go/ast", + "ast.Ident": "go/ast", + "ast.IfStmt": "go/ast", + "ast.ImportSpec": "go/ast", + "ast.Importer": "go/ast", + "ast.IncDecStmt": "go/ast", + "ast.IndexExpr": "go/ast", + "ast.Inspect": "go/ast", + "ast.InterfaceType": "go/ast", + "ast.IsExported": "go/ast", + "ast.KeyValueExpr": "go/ast", + "ast.LabeledStmt": "go/ast", + "ast.Lbl": "go/ast", + "ast.MapType": "go/ast", + "ast.MergeMode": "go/ast", + "ast.MergePackageFiles": "go/ast", + "ast.NewCommentMap": "go/ast", + "ast.NewIdent": "go/ast", + "ast.NewObj": "go/ast", + "ast.NewPackage": "go/ast", + "ast.NewScope": "go/ast", + "ast.Node": "go/ast", + "ast.NotNilFilter": "go/ast", + "ast.ObjKind": "go/ast", + "ast.Object": "go/ast", + "ast.Package": "go/ast", + "ast.PackageExports": "go/ast", + "ast.ParenExpr": "go/ast", + "ast.Pkg": "go/ast", + "ast.Print": "go/ast", + "ast.RECV": "go/ast", + "ast.RangeStmt": "go/ast", + "ast.ReturnStmt": "go/ast", + "ast.SEND": "go/ast", + "ast.Scope": "go/ast", + "ast.SelectStmt": "go/ast", + "ast.SelectorExpr": "go/ast", + "ast.SendStmt": "go/ast", + "ast.SliceExpr": "go/ast", + "ast.SortImports": "go/ast", + "ast.StarExpr": "go/ast", + "ast.StructType": "go/ast", + "ast.SwitchStmt": "go/ast", + "ast.Typ": "go/ast", + "ast.TypeAssertExpr": "go/ast", + "ast.TypeSpec": "go/ast", + "ast.TypeSwitchStmt": "go/ast", + "ast.UnaryExpr": "go/ast", + "ast.ValueSpec": "go/ast", + "ast.Var": "go/ast", + "ast.Visitor": "go/ast", + "ast.Walk": "go/ast", + "atomic.AddInt32": "sync/atomic", + "atomic.AddInt64": "sync/atomic", + "atomic.AddUint32": "sync/atomic", + "atomic.AddUint64": "sync/atomic", + "atomic.AddUintptr": "sync/atomic", + "atomic.CompareAndSwapInt32": "sync/atomic", + "atomic.CompareAndSwapInt64": "sync/atomic", + "atomic.CompareAndSwapPointer": "sync/atomic", + "atomic.CompareAndSwapUint32": "sync/atomic", + "atomic.CompareAndSwapUint64": "sync/atomic", + "atomic.CompareAndSwapUintptr": "sync/atomic", + "atomic.LoadInt32": "sync/atomic", + "atomic.LoadInt64": "sync/atomic", + "atomic.LoadPointer": "sync/atomic", + "atomic.LoadUint32": "sync/atomic", + "atomic.LoadUint64": "sync/atomic", + "atomic.LoadUintptr": "sync/atomic", + "atomic.StoreInt32": "sync/atomic", + "atomic.StoreInt64": "sync/atomic", + "atomic.StorePointer": "sync/atomic", + "atomic.StoreUint32": "sync/atomic", + "atomic.StoreUint64": "sync/atomic", + "atomic.StoreUintptr": "sync/atomic", + "atomic.SwapInt32": "sync/atomic", + "atomic.SwapInt64": "sync/atomic", + "atomic.SwapPointer": "sync/atomic", + "atomic.SwapUint32": "sync/atomic", + "atomic.SwapUint64": "sync/atomic", + "atomic.SwapUintptr": "sync/atomic", + "base32.CorruptInputError": "encoding/base32", + "base32.Encoding": "encoding/base32", + "base32.HexEncoding": "encoding/base32", + "base32.NewDecoder": "encoding/base32", + "base32.NewEncoder": "encoding/base32", + "base32.NewEncoding": "encoding/base32", + "base32.StdEncoding": "encoding/base32", + "base64.CorruptInputError": "encoding/base64", + "base64.Encoding": "encoding/base64", + "base64.NewDecoder": "encoding/base64", + "base64.NewEncoder": "encoding/base64", + "base64.NewEncoding": "encoding/base64", + "base64.StdEncoding": "encoding/base64", + "base64.URLEncoding": "encoding/base64", + "big.Int": "math/big", + "big.MaxBase": "math/big", + "big.NewInt": "math/big", + "big.NewRat": "math/big", + "big.Rat": "math/big", + "big.Word": "math/big", + "binary.BigEndian": "encoding/binary", + "binary.ByteOrder": "encoding/binary", + "binary.LittleEndian": "encoding/binary", + "binary.MaxVarintLen16": "encoding/binary", + "binary.MaxVarintLen32": "encoding/binary", + "binary.MaxVarintLen64": "encoding/binary", + "binary.PutUvarint": "encoding/binary", + "binary.PutVarint": "encoding/binary", + "binary.Read": "encoding/binary", + "binary.ReadUvarint": "encoding/binary", + "binary.ReadVarint": "encoding/binary", + "binary.Size": "encoding/binary", + "binary.Uvarint": "encoding/binary", + "binary.Varint": "encoding/binary", + "binary.Write": "encoding/binary", + "bufio.ErrAdvanceTooFar": "bufio", + "bufio.ErrBufferFull": "bufio", + "bufio.ErrInvalidUnreadByte": "bufio", + "bufio.ErrInvalidUnreadRune": "bufio", + "bufio.ErrNegativeAdvance": "bufio", + "bufio.ErrNegativeCount": "bufio", + "bufio.ErrTooLong": "bufio", + "bufio.MaxScanTokenSize": "bufio", + "bufio.NewReadWriter": "bufio", + "bufio.NewReader": "bufio", + "bufio.NewReaderSize": "bufio", + "bufio.NewScanner": "bufio", + "bufio.NewWriter": "bufio", + "bufio.NewWriterSize": "bufio", + "bufio.ReadWriter": "bufio", + "bufio.Reader": "bufio", + "bufio.ScanBytes": "bufio", + "bufio.ScanLines": "bufio", + "bufio.ScanRunes": "bufio", + "bufio.ScanWords": "bufio", + "bufio.Scanner": "bufio", + "bufio.SplitFunc": "bufio", + "bufio.Writer": "bufio", + "build.AllowBinary": "go/build", + "build.ArchChar": "go/build", + "build.Context": "go/build", + "build.Default": "go/build", + "build.FindOnly": "go/build", + "build.Import": "go/build", + "build.ImportDir": "go/build", + "build.ImportMode": "go/build", + "build.IsLocalImport": "go/build", + "build.NoGoError": "go/build", + "build.Package": "go/build", + "build.ToolDir": "go/build", + "bytes.Buffer": "bytes", + "bytes.Compare": "bytes", + "bytes.Contains": "bytes", + "bytes.Count": "bytes", + "bytes.Equal": "bytes", + "bytes.EqualFold": "bytes", + "bytes.ErrTooLarge": "bytes", + "bytes.Fields": "bytes", + "bytes.FieldsFunc": "bytes", + "bytes.HasPrefix": "bytes", + "bytes.HasSuffix": "bytes", + "bytes.Index": "bytes", + "bytes.IndexAny": "bytes", + "bytes.IndexByte": "bytes", + "bytes.IndexFunc": "bytes", + "bytes.IndexRune": "bytes", + "bytes.Join": "bytes", + "bytes.LastIndex": "bytes", + "bytes.LastIndexAny": "bytes", + "bytes.LastIndexFunc": "bytes", + "bytes.Map": "bytes", + "bytes.MinRead": "bytes", + "bytes.NewBuffer": "bytes", + "bytes.NewBufferString": "bytes", + "bytes.NewReader": "bytes", + "bytes.Reader": "bytes", + "bytes.Repeat": "bytes", + "bytes.Replace": "bytes", + "bytes.Runes": "bytes", + "bytes.Split": "bytes", + "bytes.SplitAfter": "bytes", + "bytes.SplitAfterN": "bytes", + "bytes.SplitN": "bytes", + "bytes.Title": "bytes", + "bytes.ToLower": "bytes", + "bytes.ToLowerSpecial": "bytes", + "bytes.ToTitle": "bytes", + "bytes.ToTitleSpecial": "bytes", + "bytes.ToUpper": "bytes", + "bytes.ToUpperSpecial": "bytes", + "bytes.Trim": "bytes", + "bytes.TrimFunc": "bytes", + "bytes.TrimLeft": "bytes", + "bytes.TrimLeftFunc": "bytes", + "bytes.TrimPrefix": "bytes", + "bytes.TrimRight": "bytes", + "bytes.TrimRightFunc": "bytes", + "bytes.TrimSpace": "bytes", + "bytes.TrimSuffix": "bytes", + "bzip2.NewReader": "compress/bzip2", + "bzip2.StructuralError": "compress/bzip2", + "cgi.Handler": "net/http/cgi", + "cgi.Request": "net/http/cgi", + "cgi.RequestFromMap": "net/http/cgi", + "cgi.Serve": "net/http/cgi", + "cipher.AEAD": "crypto/cipher", + "cipher.Block": "crypto/cipher", + "cipher.BlockMode": "crypto/cipher", + "cipher.NewCBCDecrypter": "crypto/cipher", + "cipher.NewCBCEncrypter": "crypto/cipher", + "cipher.NewCFBDecrypter": "crypto/cipher", + "cipher.NewCFBEncrypter": "crypto/cipher", + "cipher.NewCTR": "crypto/cipher", + "cipher.NewGCM": "crypto/cipher", + "cipher.NewOFB": "crypto/cipher", + "cipher.Stream": "crypto/cipher", + "cipher.StreamReader": "crypto/cipher", + "cipher.StreamWriter": "crypto/cipher", + "cmplx.Abs": "math/cmplx", + "cmplx.Acos": "math/cmplx", + "cmplx.Acosh": "math/cmplx", + "cmplx.Asin": "math/cmplx", + "cmplx.Asinh": "math/cmplx", + "cmplx.Atan": "math/cmplx", + "cmplx.Atanh": "math/cmplx", + "cmplx.Conj": "math/cmplx", + "cmplx.Cos": "math/cmplx", + "cmplx.Cosh": "math/cmplx", + "cmplx.Cot": "math/cmplx", + "cmplx.Exp": "math/cmplx", + "cmplx.Inf": "math/cmplx", + "cmplx.IsInf": "math/cmplx", + "cmplx.IsNaN": "math/cmplx", + "cmplx.Log": "math/cmplx", + "cmplx.Log10": "math/cmplx", + "cmplx.NaN": "math/cmplx", + "cmplx.Phase": "math/cmplx", + "cmplx.Polar": "math/cmplx", + "cmplx.Pow": "math/cmplx", + "cmplx.Rect": "math/cmplx", + "cmplx.Sin": "math/cmplx", + "cmplx.Sinh": "math/cmplx", + "cmplx.Sqrt": "math/cmplx", + "cmplx.Tan": "math/cmplx", + "cmplx.Tanh": "math/cmplx", + "color.Alpha": "image/color", + "color.Alpha16": "image/color", + "color.Alpha16Model": "image/color", + "color.AlphaModel": "image/color", + "color.Black": "image/color", + "color.Color": "image/color", + "color.Gray": "image/color", + "color.Gray16": "image/color", + "color.Gray16Model": "image/color", + "color.GrayModel": "image/color", + "color.Model": "image/color", + "color.ModelFunc": "image/color", + "color.NRGBA": "image/color", + "color.NRGBA64": "image/color", + "color.NRGBA64Model": "image/color", + "color.NRGBAModel": "image/color", + "color.Opaque": "image/color", + "color.Palette": "image/color", + "color.RGBA": "image/color", + "color.RGBA64": "image/color", + "color.RGBA64Model": "image/color", + "color.RGBAModel": "image/color", + "color.RGBToYCbCr": "image/color", + "color.Transparent": "image/color", + "color.White": "image/color", + "color.YCbCr": "image/color", + "color.YCbCrModel": "image/color", + "color.YCbCrToRGB": "image/color", + "cookiejar.Jar": "net/http/cookiejar", + "cookiejar.New": "net/http/cookiejar", + "cookiejar.Options": "net/http/cookiejar", + "cookiejar.PublicSuffixList": "net/http/cookiejar", + "crc32.Castagnoli": "hash/crc32", + "crc32.Checksum": "hash/crc32", + "crc32.ChecksumIEEE": "hash/crc32", + "crc32.IEEE": "hash/crc32", + "crc32.IEEETable": "hash/crc32", + "crc32.Koopman": "hash/crc32", + "crc32.MakeTable": "hash/crc32", + "crc32.New": "hash/crc32", + "crc32.NewIEEE": "hash/crc32", + "crc32.Size": "hash/crc32", + "crc32.Table": "hash/crc32", + "crc32.Update": "hash/crc32", + "crc64.Checksum": "hash/crc64", + "crc64.ECMA": "hash/crc64", + "crc64.ISO": "hash/crc64", + "crc64.MakeTable": "hash/crc64", + "crc64.New": "hash/crc64", + "crc64.Size": "hash/crc64", + "crc64.Table": "hash/crc64", + "crc64.Update": "hash/crc64", + "crypto.Hash": "crypto", + "crypto.MD4": "crypto", + "crypto.MD5": "crypto", + "crypto.MD5SHA1": "crypto", + "crypto.PrivateKey": "crypto", + "crypto.PublicKey": "crypto", + "crypto.RIPEMD160": "crypto", + "crypto.RegisterHash": "crypto", + "crypto.SHA1": "crypto", + "crypto.SHA224": "crypto", + "crypto.SHA256": "crypto", + "crypto.SHA384": "crypto", + "crypto.SHA512": "crypto", + "csv.ErrBareQuote": "encoding/csv", + "csv.ErrFieldCount": "encoding/csv", + "csv.ErrQuote": "encoding/csv", + "csv.ErrTrailingComma": "encoding/csv", + "csv.NewReader": "encoding/csv", + "csv.NewWriter": "encoding/csv", + "csv.ParseError": "encoding/csv", + "csv.Reader": "encoding/csv", + "csv.Writer": "encoding/csv", + "debug.FreeOSMemory": "runtime/debug", + "debug.GCStats": "runtime/debug", + "debug.PrintStack": "runtime/debug", + "debug.ReadGCStats": "runtime/debug", + "debug.SetGCPercent": "runtime/debug", + "debug.SetMaxStack": "runtime/debug", + "debug.SetMaxThreads": "runtime/debug", + "debug.Stack": "runtime/debug", + "des.BlockSize": "crypto/des", + "des.KeySizeError": "crypto/des", + "des.NewCipher": "crypto/des", + "des.NewTripleDESCipher": "crypto/des", + "doc.AllDecls": "go/doc", + "doc.AllMethods": "go/doc", + "doc.Example": "go/doc", + "doc.Examples": "go/doc", + "doc.Filter": "go/doc", + "doc.Func": "go/doc", + "doc.IllegalPrefixes": "go/doc", + "doc.Mode": "go/doc", + "doc.New": "go/doc", + "doc.Note": "go/doc", + "doc.Package": "go/doc", + "doc.Synopsis": "go/doc", + "doc.ToHTML": "go/doc", + "doc.ToText": "go/doc", + "doc.Type": "go/doc", + "doc.Value": "go/doc", + "draw.Draw": "image/draw", + "draw.DrawMask": "image/draw", + "draw.Drawer": "image/draw", + "draw.FloydSteinberg": "image/draw", + "draw.Image": "image/draw", + "draw.Op": "image/draw", + "draw.Over": "image/draw", + "draw.Quantizer": "image/draw", + "draw.Src": "image/draw", + "driver.Bool": "database/sql/driver", + "driver.ColumnConverter": "database/sql/driver", + "driver.Conn": "database/sql/driver", + "driver.DefaultParameterConverter": "database/sql/driver", + "driver.Driver": 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"dsa.L2048N224": "crypto/dsa", + "dsa.L2048N256": "crypto/dsa", + "dsa.L3072N256": "crypto/dsa", + "dsa.ParameterSizes": "crypto/dsa", + "dsa.Parameters": "crypto/dsa", + "dsa.PrivateKey": "crypto/dsa", + "dsa.PublicKey": "crypto/dsa", + "dsa.Sign": "crypto/dsa", + "dsa.Verify": "crypto/dsa", + "dwarf.AddrType": "debug/dwarf", + "dwarf.ArrayType": "debug/dwarf", + "dwarf.Attr": "debug/dwarf", + "dwarf.AttrAbstractOrigin": "debug/dwarf", + "dwarf.AttrAccessibility": "debug/dwarf", + "dwarf.AttrAddrClass": "debug/dwarf", + "dwarf.AttrAllocated": "debug/dwarf", + "dwarf.AttrArtificial": "debug/dwarf", + "dwarf.AttrAssociated": "debug/dwarf", + "dwarf.AttrBaseTypes": "debug/dwarf", + "dwarf.AttrBitOffset": "debug/dwarf", + "dwarf.AttrBitSize": "debug/dwarf", + "dwarf.AttrByteSize": "debug/dwarf", + "dwarf.AttrCallColumn": "debug/dwarf", + "dwarf.AttrCallFile": "debug/dwarf", + "dwarf.AttrCallLine": "debug/dwarf", + "dwarf.AttrCalling": "debug/dwarf", + "dwarf.AttrCommonRef": "debug/dwarf", 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"dwarf.AttrIsOptional": "debug/dwarf", + "dwarf.AttrLanguage": "debug/dwarf", + "dwarf.AttrLocation": "debug/dwarf", + "dwarf.AttrLowerBound": "debug/dwarf", + "dwarf.AttrLowpc": "debug/dwarf", + "dwarf.AttrMacroInfo": "debug/dwarf", + "dwarf.AttrName": "debug/dwarf", + "dwarf.AttrNamelistItem": "debug/dwarf", + "dwarf.AttrOrdering": "debug/dwarf", + "dwarf.AttrPriority": "debug/dwarf", + "dwarf.AttrProducer": "debug/dwarf", + "dwarf.AttrPrototyped": "debug/dwarf", + "dwarf.AttrRanges": "debug/dwarf", + "dwarf.AttrReturnAddr": "debug/dwarf", + "dwarf.AttrSegment": "debug/dwarf", + "dwarf.AttrSibling": "debug/dwarf", + "dwarf.AttrSpecification": "debug/dwarf", + "dwarf.AttrStartScope": "debug/dwarf", + "dwarf.AttrStaticLink": "debug/dwarf", + "dwarf.AttrStmtList": "debug/dwarf", + "dwarf.AttrStride": "debug/dwarf", + "dwarf.AttrStrideSize": "debug/dwarf", + "dwarf.AttrStringLength": "debug/dwarf", + "dwarf.AttrTrampoline": "debug/dwarf", + "dwarf.AttrType": "debug/dwarf", + "dwarf.AttrUpperBound": "debug/dwarf", + "dwarf.AttrUseLocation": "debug/dwarf", + "dwarf.AttrUseUTF8": "debug/dwarf", + "dwarf.AttrVarParam": "debug/dwarf", + "dwarf.AttrVirtuality": "debug/dwarf", + "dwarf.AttrVisibility": "debug/dwarf", + "dwarf.AttrVtableElemLoc": "debug/dwarf", + "dwarf.BasicType": "debug/dwarf", + "dwarf.BoolType": "debug/dwarf", + "dwarf.CharType": "debug/dwarf", + "dwarf.CommonType": "debug/dwarf", + "dwarf.ComplexType": "debug/dwarf", + "dwarf.Data": "debug/dwarf", + "dwarf.DecodeError": "debug/dwarf", + "dwarf.DotDotDotType": "debug/dwarf", + "dwarf.Entry": "debug/dwarf", + "dwarf.EnumType": "debug/dwarf", + "dwarf.EnumValue": "debug/dwarf", + "dwarf.Field": "debug/dwarf", + "dwarf.FloatType": "debug/dwarf", + "dwarf.FuncType": "debug/dwarf", + "dwarf.IntType": "debug/dwarf", + "dwarf.New": "debug/dwarf", + "dwarf.Offset": "debug/dwarf", + "dwarf.PtrType": "debug/dwarf", + "dwarf.QualType": "debug/dwarf", + "dwarf.Reader": "debug/dwarf", + "dwarf.StructField": "debug/dwarf", + "dwarf.StructType": "debug/dwarf", + "dwarf.Tag": "debug/dwarf", + "dwarf.TagAccessDeclaration": "debug/dwarf", + "dwarf.TagArrayType": "debug/dwarf", + "dwarf.TagBaseType": "debug/dwarf", + "dwarf.TagCatchDwarfBlock": "debug/dwarf", + "dwarf.TagClassType": "debug/dwarf", + "dwarf.TagCommonDwarfBlock": "debug/dwarf", + "dwarf.TagCommonInclusion": "debug/dwarf", + "dwarf.TagCompileUnit": "debug/dwarf", + "dwarf.TagConstType": "debug/dwarf", + "dwarf.TagConstant": "debug/dwarf", + "dwarf.TagDwarfProcedure": "debug/dwarf", + "dwarf.TagEntryPoint": "debug/dwarf", + "dwarf.TagEnumerationType": "debug/dwarf", + "dwarf.TagEnumerator": "debug/dwarf", + "dwarf.TagFileType": "debug/dwarf", + "dwarf.TagFormalParameter": "debug/dwarf", + "dwarf.TagFriend": "debug/dwarf", + "dwarf.TagImportedDeclaration": "debug/dwarf", + "dwarf.TagImportedModule": "debug/dwarf", + "dwarf.TagImportedUnit": "debug/dwarf", + "dwarf.TagInheritance": "debug/dwarf", + "dwarf.TagInlinedSubroutine": "debug/dwarf", + "dwarf.TagInterfaceType": "debug/dwarf", + "dwarf.TagLabel": "debug/dwarf", + "dwarf.TagLexDwarfBlock": "debug/dwarf", + "dwarf.TagMember": "debug/dwarf", + "dwarf.TagModule": "debug/dwarf", + "dwarf.TagMutableType": "debug/dwarf", + "dwarf.TagNamelist": "debug/dwarf", + "dwarf.TagNamelistItem": "debug/dwarf", + "dwarf.TagNamespace": "debug/dwarf", + "dwarf.TagPackedType": "debug/dwarf", + "dwarf.TagPartialUnit": "debug/dwarf", + "dwarf.TagPointerType": "debug/dwarf", + "dwarf.TagPtrToMemberType": "debug/dwarf", + "dwarf.TagReferenceType": "debug/dwarf", + "dwarf.TagRestrictType": "debug/dwarf", + "dwarf.TagSetType": "debug/dwarf", + "dwarf.TagStringType": "debug/dwarf", + "dwarf.TagStructType": "debug/dwarf", + "dwarf.TagSubprogram": "debug/dwarf", + "dwarf.TagSubrangeType": "debug/dwarf", + "dwarf.TagSubroutineType": "debug/dwarf", + "dwarf.TagTemplateTypeParameter": "debug/dwarf", + "dwarf.TagTemplateValueParameter": "debug/dwarf", + "dwarf.TagThrownType": "debug/dwarf", + "dwarf.TagTryDwarfBlock": "debug/dwarf", + "dwarf.TagTypedef": "debug/dwarf", + "dwarf.TagUnionType": "debug/dwarf", + "dwarf.TagUnspecifiedParameters": "debug/dwarf", + "dwarf.TagUnspecifiedType": "debug/dwarf", + "dwarf.TagVariable": "debug/dwarf", + "dwarf.TagVariant": "debug/dwarf", + "dwarf.TagVariantPart": "debug/dwarf", + "dwarf.TagVolatileType": "debug/dwarf", + "dwarf.TagWithStmt": "debug/dwarf", + "dwarf.Type": "debug/dwarf", + "dwarf.TypedefType": "debug/dwarf", + "dwarf.UcharType": "debug/dwarf", + "dwarf.UintType": "debug/dwarf", + "dwarf.VoidType": "debug/dwarf", + "ecdsa.GenerateKey": "crypto/ecdsa", + "ecdsa.PrivateKey": "crypto/ecdsa", + "ecdsa.PublicKey": "crypto/ecdsa", + "ecdsa.Sign": "crypto/ecdsa", + "ecdsa.Verify": "crypto/ecdsa", + "elf.ARM_MAGIC_TRAMP_NUMBER": "debug/elf", + "elf.Class": "debug/elf", + "elf.DF_BIND_NOW": "debug/elf", + "elf.DF_ORIGIN": "debug/elf", + "elf.DF_STATIC_TLS": "debug/elf", + "elf.DF_SYMBOLIC": "debug/elf", + "elf.DF_TEXTREL": "debug/elf", + "elf.DT_BIND_NOW": "debug/elf", + "elf.DT_DEBUG": "debug/elf", + "elf.DT_ENCODING": "debug/elf", + "elf.DT_FINI": "debug/elf", + "elf.DT_FINI_ARRAY": "debug/elf", + "elf.DT_FINI_ARRAYSZ": "debug/elf", + "elf.DT_FLAGS": "debug/elf", + "elf.DT_HASH": "debug/elf", + "elf.DT_HIOS": "debug/elf", + "elf.DT_HIPROC": "debug/elf", + "elf.DT_INIT": "debug/elf", + "elf.DT_INIT_ARRAY": "debug/elf", + "elf.DT_INIT_ARRAYSZ": "debug/elf", + "elf.DT_JMPREL": "debug/elf", + "elf.DT_LOOS": "debug/elf", + "elf.DT_LOPROC": "debug/elf", + "elf.DT_NEEDED": "debug/elf", + "elf.DT_NULL": "debug/elf", + "elf.DT_PLTGOT": "debug/elf", + "elf.DT_PLTREL": "debug/elf", + "elf.DT_PLTRELSZ": "debug/elf", + "elf.DT_PREINIT_ARRAY": "debug/elf", + "elf.DT_PREINIT_ARRAYSZ": "debug/elf", + "elf.DT_REL": "debug/elf", + "elf.DT_RELA": "debug/elf", + "elf.DT_RELAENT": "debug/elf", + "elf.DT_RELASZ": "debug/elf", + "elf.DT_RELENT": "debug/elf", + "elf.DT_RELSZ": "debug/elf", + 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"elf.EM_FR20": "debug/elf", + "elf.EM_H8S": "debug/elf", + "elf.EM_H8_300": "debug/elf", + "elf.EM_H8_300H": "debug/elf", + "elf.EM_H8_500": "debug/elf", + "elf.EM_IA_64": "debug/elf", + "elf.EM_M32": "debug/elf", + "elf.EM_ME16": "debug/elf", + "elf.EM_MIPS": "debug/elf", + "elf.EM_MIPS_RS3_LE": "debug/elf", + "elf.EM_MIPS_RS4_BE": "debug/elf", + "elf.EM_MIPS_X": "debug/elf", + "elf.EM_MMA": "debug/elf", + "elf.EM_NCPU": "debug/elf", + "elf.EM_NDR1": "debug/elf", + "elf.EM_NONE": "debug/elf", + "elf.EM_PARISC": "debug/elf", + "elf.EM_PCP": "debug/elf", + "elf.EM_PPC": "debug/elf", + "elf.EM_PPC64": "debug/elf", + "elf.EM_RCE": "debug/elf", + "elf.EM_RH32": "debug/elf", + "elf.EM_S370": "debug/elf", + "elf.EM_S390": "debug/elf", + "elf.EM_SH": "debug/elf", + "elf.EM_SPARC": "debug/elf", + "elf.EM_SPARC32PLUS": "debug/elf", + "elf.EM_SPARCV9": "debug/elf", + "elf.EM_ST100": "debug/elf", + "elf.EM_STARCORE": "debug/elf", + "elf.EM_TINYJ": "debug/elf", + "elf.EM_TRICORE": "debug/elf", + 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"debug/elf", + "elf.PT_DYNAMIC": "debug/elf", + "elf.PT_HIOS": "debug/elf", + "elf.PT_HIPROC": "debug/elf", + "elf.PT_INTERP": "debug/elf", + "elf.PT_LOAD": "debug/elf", + "elf.PT_LOOS": "debug/elf", + "elf.PT_LOPROC": "debug/elf", + "elf.PT_NOTE": "debug/elf", + "elf.PT_NULL": "debug/elf", + "elf.PT_PHDR": "debug/elf", + "elf.PT_SHLIB": "debug/elf", + "elf.PT_TLS": "debug/elf", + "elf.Prog": "debug/elf", + "elf.Prog32": "debug/elf", + "elf.Prog64": "debug/elf", + "elf.ProgFlag": "debug/elf", + "elf.ProgHeader": "debug/elf", + "elf.ProgType": "debug/elf", + "elf.R_386": "debug/elf", + "elf.R_386_32": "debug/elf", + "elf.R_386_COPY": "debug/elf", + "elf.R_386_GLOB_DAT": "debug/elf", + "elf.R_386_GOT32": "debug/elf", + "elf.R_386_GOTOFF": "debug/elf", + "elf.R_386_GOTPC": "debug/elf", + "elf.R_386_JMP_SLOT": "debug/elf", + "elf.R_386_NONE": "debug/elf", + "elf.R_386_PC32": "debug/elf", + "elf.R_386_PLT32": "debug/elf", + "elf.R_386_RELATIVE": "debug/elf", + "elf.R_386_TLS_DTPMOD32": "debug/elf", + "elf.R_386_TLS_DTPOFF32": "debug/elf", + "elf.R_386_TLS_GD": "debug/elf", + "elf.R_386_TLS_GD_32": "debug/elf", + "elf.R_386_TLS_GD_CALL": "debug/elf", + "elf.R_386_TLS_GD_POP": "debug/elf", + "elf.R_386_TLS_GD_PUSH": "debug/elf", + "elf.R_386_TLS_GOTIE": "debug/elf", + "elf.R_386_TLS_IE": "debug/elf", + "elf.R_386_TLS_IE_32": "debug/elf", + "elf.R_386_TLS_LDM": "debug/elf", + "elf.R_386_TLS_LDM_32": "debug/elf", + "elf.R_386_TLS_LDM_CALL": "debug/elf", + "elf.R_386_TLS_LDM_POP": "debug/elf", + "elf.R_386_TLS_LDM_PUSH": "debug/elf", + "elf.R_386_TLS_LDO_32": "debug/elf", + "elf.R_386_TLS_LE": "debug/elf", + "elf.R_386_TLS_LE_32": "debug/elf", + "elf.R_386_TLS_TPOFF": "debug/elf", + "elf.R_386_TLS_TPOFF32": "debug/elf", + "elf.R_ALPHA": "debug/elf", + "elf.R_ALPHA_BRADDR": "debug/elf", + "elf.R_ALPHA_COPY": "debug/elf", + "elf.R_ALPHA_GLOB_DAT": "debug/elf", + "elf.R_ALPHA_GPDISP": "debug/elf", + "elf.R_ALPHA_GPREL32": "debug/elf", + "elf.R_ALPHA_GPRELHIGH": "debug/elf", + "elf.R_ALPHA_GPRELLOW": "debug/elf", + "elf.R_ALPHA_GPVALUE": "debug/elf", + "elf.R_ALPHA_HINT": "debug/elf", + "elf.R_ALPHA_IMMED_BR_HI32": "debug/elf", + "elf.R_ALPHA_IMMED_GP_16": "debug/elf", + "elf.R_ALPHA_IMMED_GP_HI32": "debug/elf", + "elf.R_ALPHA_IMMED_LO32": "debug/elf", + "elf.R_ALPHA_IMMED_SCN_HI32": "debug/elf", + "elf.R_ALPHA_JMP_SLOT": "debug/elf", + "elf.R_ALPHA_LITERAL": "debug/elf", + "elf.R_ALPHA_LITUSE": "debug/elf", + "elf.R_ALPHA_NONE": "debug/elf", + "elf.R_ALPHA_OP_PRSHIFT": "debug/elf", + "elf.R_ALPHA_OP_PSUB": "debug/elf", + "elf.R_ALPHA_OP_PUSH": "debug/elf", + "elf.R_ALPHA_OP_STORE": "debug/elf", + "elf.R_ALPHA_REFLONG": "debug/elf", + "elf.R_ALPHA_REFQUAD": "debug/elf", + "elf.R_ALPHA_RELATIVE": "debug/elf", + "elf.R_ALPHA_SREL16": "debug/elf", + "elf.R_ALPHA_SREL32": "debug/elf", + "elf.R_ALPHA_SREL64": "debug/elf", + "elf.R_ARM": "debug/elf", + "elf.R_ARM_ABS12": "debug/elf", + "elf.R_ARM_ABS16": "debug/elf", + "elf.R_ARM_ABS32": "debug/elf", + "elf.R_ARM_ABS8": "debug/elf", + "elf.R_ARM_AMP_VCALL9": "debug/elf", + "elf.R_ARM_COPY": "debug/elf", + "elf.R_ARM_GLOB_DAT": "debug/elf", + "elf.R_ARM_GNU_VTENTRY": "debug/elf", + "elf.R_ARM_GNU_VTINHERIT": "debug/elf", + "elf.R_ARM_GOT32": "debug/elf", + "elf.R_ARM_GOTOFF": "debug/elf", + "elf.R_ARM_GOTPC": "debug/elf", + "elf.R_ARM_JUMP_SLOT": "debug/elf", + "elf.R_ARM_NONE": "debug/elf", + "elf.R_ARM_PC13": "debug/elf", + "elf.R_ARM_PC24": "debug/elf", + "elf.R_ARM_PLT32": "debug/elf", + "elf.R_ARM_RABS32": "debug/elf", + "elf.R_ARM_RBASE": "debug/elf", + "elf.R_ARM_REL32": "debug/elf", + "elf.R_ARM_RELATIVE": "debug/elf", + "elf.R_ARM_RPC24": "debug/elf", + "elf.R_ARM_RREL32": "debug/elf", + "elf.R_ARM_RSBREL32": "debug/elf", + "elf.R_ARM_SBREL32": "debug/elf", + "elf.R_ARM_SWI24": "debug/elf", + "elf.R_ARM_THM_ABS5": "debug/elf", + "elf.R_ARM_THM_PC22": "debug/elf", + "elf.R_ARM_THM_PC8": "debug/elf", + "elf.R_ARM_THM_RPC22": "debug/elf", + "elf.R_ARM_THM_SWI8": "debug/elf", + "elf.R_ARM_THM_XPC22": "debug/elf", + "elf.R_ARM_XPC25": "debug/elf", + "elf.R_INFO": "debug/elf", + "elf.R_INFO32": "debug/elf", + "elf.R_PPC": "debug/elf", + "elf.R_PPC_ADDR14": "debug/elf", + "elf.R_PPC_ADDR14_BRNTAKEN": "debug/elf", + "elf.R_PPC_ADDR14_BRTAKEN": "debug/elf", + "elf.R_PPC_ADDR16": "debug/elf", + "elf.R_PPC_ADDR16_HA": "debug/elf", + "elf.R_PPC_ADDR16_HI": "debug/elf", + "elf.R_PPC_ADDR16_LO": "debug/elf", + "elf.R_PPC_ADDR24": "debug/elf", + "elf.R_PPC_ADDR32": "debug/elf", + "elf.R_PPC_COPY": "debug/elf", + "elf.R_PPC_DTPMOD32": "debug/elf", + "elf.R_PPC_DTPREL16": "debug/elf", + "elf.R_PPC_DTPREL16_HA": "debug/elf", + "elf.R_PPC_DTPREL16_HI": "debug/elf", + "elf.R_PPC_DTPREL16_LO": "debug/elf", + "elf.R_PPC_DTPREL32": "debug/elf", + "elf.R_PPC_EMB_BIT_FLD": "debug/elf", + "elf.R_PPC_EMB_MRKREF": "debug/elf", + "elf.R_PPC_EMB_NADDR16": "debug/elf", + "elf.R_PPC_EMB_NADDR16_HA": "debug/elf", + "elf.R_PPC_EMB_NADDR16_HI": "debug/elf", + "elf.R_PPC_EMB_NADDR16_LO": "debug/elf", + "elf.R_PPC_EMB_NADDR32": "debug/elf", + "elf.R_PPC_EMB_RELSDA": "debug/elf", + "elf.R_PPC_EMB_RELSEC16": "debug/elf", + "elf.R_PPC_EMB_RELST_HA": "debug/elf", + "elf.R_PPC_EMB_RELST_HI": "debug/elf", + "elf.R_PPC_EMB_RELST_LO": "debug/elf", + "elf.R_PPC_EMB_SDA21": "debug/elf", + "elf.R_PPC_EMB_SDA2I16": "debug/elf", + "elf.R_PPC_EMB_SDA2REL": "debug/elf", + "elf.R_PPC_EMB_SDAI16": "debug/elf", + "elf.R_PPC_GLOB_DAT": "debug/elf", + "elf.R_PPC_GOT16": "debug/elf", + "elf.R_PPC_GOT16_HA": "debug/elf", + "elf.R_PPC_GOT16_HI": "debug/elf", + "elf.R_PPC_GOT16_LO": "debug/elf", + "elf.R_PPC_GOT_TLSGD16": "debug/elf", + "elf.R_PPC_GOT_TLSGD16_HA": "debug/elf", + "elf.R_PPC_GOT_TLSGD16_HI": "debug/elf", + "elf.R_PPC_GOT_TLSGD16_LO": "debug/elf", + "elf.R_PPC_GOT_TLSLD16": "debug/elf", + "elf.R_PPC_GOT_TLSLD16_HA": "debug/elf", + "elf.R_PPC_GOT_TLSLD16_HI": "debug/elf", + "elf.R_PPC_GOT_TLSLD16_LO": "debug/elf", + "elf.R_PPC_GOT_TPREL16": "debug/elf", + "elf.R_PPC_GOT_TPREL16_HA": "debug/elf", + "elf.R_PPC_GOT_TPREL16_HI": "debug/elf", + "elf.R_PPC_GOT_TPREL16_LO": "debug/elf", + "elf.R_PPC_JMP_SLOT": "debug/elf", + "elf.R_PPC_LOCAL24PC": "debug/elf", + "elf.R_PPC_NONE": "debug/elf", + "elf.R_PPC_PLT16_HA": "debug/elf", + "elf.R_PPC_PLT16_HI": "debug/elf", + "elf.R_PPC_PLT16_LO": "debug/elf", + "elf.R_PPC_PLT32": "debug/elf", + "elf.R_PPC_PLTREL24": "debug/elf", + "elf.R_PPC_PLTREL32": "debug/elf", + "elf.R_PPC_REL14": "debug/elf", + "elf.R_PPC_REL14_BRNTAKEN": "debug/elf", + "elf.R_PPC_REL14_BRTAKEN": "debug/elf", + "elf.R_PPC_REL24": "debug/elf", + "elf.R_PPC_REL32": "debug/elf", + "elf.R_PPC_RELATIVE": "debug/elf", + "elf.R_PPC_SDAREL16": "debug/elf", + "elf.R_PPC_SECTOFF": "debug/elf", + "elf.R_PPC_SECTOFF_HA": "debug/elf", + "elf.R_PPC_SECTOFF_HI": "debug/elf", + "elf.R_PPC_SECTOFF_LO": "debug/elf", + "elf.R_PPC_TLS": "debug/elf", + "elf.R_PPC_TPREL16": "debug/elf", + "elf.R_PPC_TPREL16_HA": "debug/elf", + "elf.R_PPC_TPREL16_HI": "debug/elf", + "elf.R_PPC_TPREL16_LO": "debug/elf", + "elf.R_PPC_TPREL32": "debug/elf", + "elf.R_PPC_UADDR16": "debug/elf", + "elf.R_PPC_UADDR32": "debug/elf", + "elf.R_SPARC": "debug/elf", + "elf.R_SPARC_10": "debug/elf", + "elf.R_SPARC_11": "debug/elf", + "elf.R_SPARC_13": "debug/elf", + "elf.R_SPARC_16": "debug/elf", + "elf.R_SPARC_22": "debug/elf", + "elf.R_SPARC_32": "debug/elf", + "elf.R_SPARC_5": "debug/elf", + "elf.R_SPARC_6": "debug/elf", + "elf.R_SPARC_64": "debug/elf", + "elf.R_SPARC_7": "debug/elf", + "elf.R_SPARC_8": "debug/elf", + "elf.R_SPARC_COPY": "debug/elf", + "elf.R_SPARC_DISP16": "debug/elf", + "elf.R_SPARC_DISP32": "debug/elf", + "elf.R_SPARC_DISP64": "debug/elf", + "elf.R_SPARC_DISP8": "debug/elf", + "elf.R_SPARC_GLOB_DAT": "debug/elf", + "elf.R_SPARC_GLOB_JMP": "debug/elf", + "elf.R_SPARC_GOT10": "debug/elf", + "elf.R_SPARC_GOT13": "debug/elf", + "elf.R_SPARC_GOT22": "debug/elf", + "elf.R_SPARC_H44": "debug/elf", + "elf.R_SPARC_HH22": "debug/elf", + "elf.R_SPARC_HI22": "debug/elf", + "elf.R_SPARC_HIPLT22": "debug/elf", + "elf.R_SPARC_HIX22": "debug/elf", + "elf.R_SPARC_HM10": "debug/elf", + "elf.R_SPARC_JMP_SLOT": "debug/elf", + "elf.R_SPARC_L44": "debug/elf", + "elf.R_SPARC_LM22": "debug/elf", + "elf.R_SPARC_LO10": "debug/elf", + "elf.R_SPARC_LOPLT10": "debug/elf", + "elf.R_SPARC_LOX10": "debug/elf", + "elf.R_SPARC_M44": "debug/elf", + "elf.R_SPARC_NONE": "debug/elf", + "elf.R_SPARC_OLO10": "debug/elf", + "elf.R_SPARC_PC10": "debug/elf", + "elf.R_SPARC_PC22": "debug/elf", + "elf.R_SPARC_PCPLT10": "debug/elf", + "elf.R_SPARC_PCPLT22": "debug/elf", + "elf.R_SPARC_PCPLT32": "debug/elf", + "elf.R_SPARC_PC_HH22": "debug/elf", + "elf.R_SPARC_PC_HM10": "debug/elf", + "elf.R_SPARC_PC_LM22": "debug/elf", + "elf.R_SPARC_PLT32": "debug/elf", + "elf.R_SPARC_PLT64": "debug/elf", + "elf.R_SPARC_REGISTER": "debug/elf", + "elf.R_SPARC_RELATIVE": "debug/elf", + "elf.R_SPARC_UA16": "debug/elf", + "elf.R_SPARC_UA32": "debug/elf", + "elf.R_SPARC_UA64": "debug/elf", + "elf.R_SPARC_WDISP16": "debug/elf", + "elf.R_SPARC_WDISP19": "debug/elf", + "elf.R_SPARC_WDISP22": "debug/elf", + "elf.R_SPARC_WDISP30": "debug/elf", + "elf.R_SPARC_WPLT30": "debug/elf", + "elf.R_SYM32": "debug/elf", + "elf.R_SYM64": "debug/elf", + "elf.R_TYPE32": "debug/elf", + "elf.R_TYPE64": "debug/elf", + "elf.R_X86_64": "debug/elf", + "elf.R_X86_64_16": "debug/elf", + "elf.R_X86_64_32": "debug/elf", + "elf.R_X86_64_32S": "debug/elf", + "elf.R_X86_64_64": "debug/elf", + "elf.R_X86_64_8": "debug/elf", + "elf.R_X86_64_COPY": "debug/elf", + "elf.R_X86_64_DTPMOD64": "debug/elf", + "elf.R_X86_64_DTPOFF32": "debug/elf", + "elf.R_X86_64_DTPOFF64": "debug/elf", + "elf.R_X86_64_GLOB_DAT": "debug/elf", + "elf.R_X86_64_GOT32": "debug/elf", + "elf.R_X86_64_GOTPCREL": "debug/elf", + "elf.R_X86_64_GOTTPOFF": "debug/elf", + "elf.R_X86_64_JMP_SLOT": "debug/elf", + "elf.R_X86_64_NONE": "debug/elf", + "elf.R_X86_64_PC16": "debug/elf", + "elf.R_X86_64_PC32": "debug/elf", + "elf.R_X86_64_PC8": "debug/elf", + "elf.R_X86_64_PLT32": "debug/elf", + "elf.R_X86_64_RELATIVE": "debug/elf", + "elf.R_X86_64_TLSGD": "debug/elf", + "elf.R_X86_64_TLSLD": "debug/elf", + "elf.R_X86_64_TPOFF32": "debug/elf", + "elf.R_X86_64_TPOFF64": "debug/elf", + "elf.Rel32": "debug/elf", + "elf.Rel64": "debug/elf", + "elf.Rela32": "debug/elf", + "elf.Rela64": "debug/elf", + "elf.SHF_ALLOC": "debug/elf", + "elf.SHF_EXECINSTR": "debug/elf", + "elf.SHF_GROUP": "debug/elf", + "elf.SHF_INFO_LINK": "debug/elf", + "elf.SHF_LINK_ORDER": "debug/elf", + "elf.SHF_MASKOS": "debug/elf", + "elf.SHF_MASKPROC": "debug/elf", + "elf.SHF_MERGE": "debug/elf", + "elf.SHF_OS_NONCONFORMING": "debug/elf", + "elf.SHF_STRINGS": "debug/elf", + "elf.SHF_TLS": "debug/elf", + "elf.SHF_WRITE": "debug/elf", + "elf.SHN_ABS": "debug/elf", + "elf.SHN_COMMON": "debug/elf", + "elf.SHN_HIOS": "debug/elf", + "elf.SHN_HIPROC": "debug/elf", + "elf.SHN_HIRESERVE": "debug/elf", + "elf.SHN_LOOS": "debug/elf", + "elf.SHN_LOPROC": "debug/elf", + "elf.SHN_LORESERVE": "debug/elf", + "elf.SHN_UNDEF": "debug/elf", + "elf.SHN_XINDEX": "debug/elf", + "elf.SHT_DYNAMIC": "debug/elf", + "elf.SHT_DYNSYM": "debug/elf", + "elf.SHT_FINI_ARRAY": "debug/elf", + "elf.SHT_GNU_ATTRIBUTES": "debug/elf", + "elf.SHT_GNU_HASH": "debug/elf", + "elf.SHT_GNU_LIBLIST": "debug/elf", + "elf.SHT_GNU_VERDEF": "debug/elf", + "elf.SHT_GNU_VERNEED": "debug/elf", + "elf.SHT_GNU_VERSYM": "debug/elf", + "elf.SHT_GROUP": "debug/elf", + "elf.SHT_HASH": "debug/elf", + "elf.SHT_HIOS": "debug/elf", + "elf.SHT_HIPROC": "debug/elf", + "elf.SHT_HIUSER": "debug/elf", + "elf.SHT_INIT_ARRAY": "debug/elf", + "elf.SHT_LOOS": "debug/elf", + "elf.SHT_LOPROC": "debug/elf", + "elf.SHT_LOUSER": "debug/elf", + "elf.SHT_NOBITS": "debug/elf", + "elf.SHT_NOTE": "debug/elf", + "elf.SHT_NULL": "debug/elf", + "elf.SHT_PREINIT_ARRAY": "debug/elf", + "elf.SHT_PROGBITS": "debug/elf", + "elf.SHT_REL": "debug/elf", + "elf.SHT_RELA": "debug/elf", + "elf.SHT_SHLIB": "debug/elf", + "elf.SHT_STRTAB": "debug/elf", + "elf.SHT_SYMTAB": "debug/elf", + "elf.SHT_SYMTAB_SHNDX": "debug/elf", + "elf.STB_GLOBAL": "debug/elf", + "elf.STB_HIOS": "debug/elf", + "elf.STB_HIPROC": "debug/elf", + "elf.STB_LOCAL": "debug/elf", + "elf.STB_LOOS": "debug/elf", + "elf.STB_LOPROC": "debug/elf", + "elf.STB_WEAK": "debug/elf", + "elf.STT_COMMON": "debug/elf", + "elf.STT_FILE": "debug/elf", + "elf.STT_FUNC": "debug/elf", + "elf.STT_HIOS": "debug/elf", + "elf.STT_HIPROC": "debug/elf", + "elf.STT_LOOS": "debug/elf", + "elf.STT_LOPROC": "debug/elf", + "elf.STT_NOTYPE": "debug/elf", + "elf.STT_OBJECT": "debug/elf", + "elf.STT_SECTION": "debug/elf", + "elf.STT_TLS": "debug/elf", + "elf.STV_DEFAULT": "debug/elf", + "elf.STV_HIDDEN": "debug/elf", + "elf.STV_INTERNAL": "debug/elf", + "elf.STV_PROTECTED": "debug/elf", + "elf.ST_BIND": "debug/elf", + "elf.ST_INFO": "debug/elf", + "elf.ST_TYPE": "debug/elf", + "elf.ST_VISIBILITY": "debug/elf", + "elf.Section": "debug/elf", + "elf.Section32": "debug/elf", + "elf.Section64": "debug/elf", + "elf.SectionFlag": "debug/elf", + "elf.SectionHeader": "debug/elf", + "elf.SectionIndex": "debug/elf", + "elf.SectionType": "debug/elf", + "elf.Sym32": "debug/elf", + "elf.Sym32Size": "debug/elf", + "elf.Sym64": "debug/elf", + "elf.Sym64Size": "debug/elf", + "elf.SymBind": "debug/elf", + "elf.SymType": "debug/elf", + "elf.SymVis": "debug/elf", + "elf.Symbol": "debug/elf", + "elf.Type": "debug/elf", + "elf.Version": "debug/elf", + "elliptic.Curve": "crypto/elliptic", + "elliptic.CurveParams": "crypto/elliptic", + "elliptic.GenerateKey": "crypto/elliptic", + "elliptic.Marshal": "crypto/elliptic", + "elliptic.P224": "crypto/elliptic", + "elliptic.P256": "crypto/elliptic", + "elliptic.P384": "crypto/elliptic", + "elliptic.P521": "crypto/elliptic", + "elliptic.Unmarshal": "crypto/elliptic", + "encoding.BinaryMarshaler": "encoding", + "encoding.BinaryUnmarshaler": "encoding", + "encoding.TextMarshaler": "encoding", + "encoding.TextUnmarshaler": "encoding", + "errors.New": "errors", + "exec.Cmd": "os/exec", + "exec.Command": "os/exec", + "exec.ErrNotFound": "os/exec", + "exec.Error": "os/exec", + "exec.ExitError": "os/exec", + "exec.LookPath": "os/exec", + "expvar.Do": "expvar", + "expvar.Float": "expvar", + "expvar.Func": "expvar", + "expvar.Get": "expvar", + "expvar.Int": "expvar", + "expvar.KeyValue": "expvar", + "expvar.Map": "expvar", + "expvar.NewFloat": "expvar", + "expvar.NewInt": "expvar", + "expvar.NewMap": "expvar", + "expvar.NewString": "expvar", + "expvar.Publish": "expvar", + "expvar.String": "expvar", + "expvar.Var": "expvar", + "fcgi.Serve": "net/http/fcgi", + "filepath.Abs": "path/filepath", + "filepath.Base": "path/filepath", + "filepath.Clean": "path/filepath", + "filepath.Dir": "path/filepath", + "filepath.ErrBadPattern": "path/filepath", + "filepath.EvalSymlinks": "path/filepath", + "filepath.Ext": "path/filepath", + "filepath.FromSlash": "path/filepath", + "filepath.Glob": "path/filepath", + "filepath.HasPrefix": "path/filepath", + "filepath.IsAbs": "path/filepath", + "filepath.Join": "path/filepath", + "filepath.ListSeparator": "path/filepath", + "filepath.Match": "path/filepath", + "filepath.Rel": "path/filepath", + "filepath.Separator": "path/filepath", + "filepath.SkipDir": "path/filepath", + "filepath.Split": "path/filepath", + "filepath.SplitList": "path/filepath", + "filepath.ToSlash": "path/filepath", + "filepath.VolumeName": "path/filepath", + "filepath.Walk": "path/filepath", + "filepath.WalkFunc": "path/filepath", + "flag.Arg": "flag", + "flag.Args": "flag", + "flag.Bool": "flag", + "flag.BoolVar": "flag", + "flag.CommandLine": "flag", + "flag.ContinueOnError": "flag", + "flag.Duration": "flag", + "flag.DurationVar": "flag", + "flag.ErrHelp": "flag", + "flag.ErrorHandling": "flag", + "flag.ExitOnError": "flag", + "flag.Flag": "flag", + "flag.FlagSet": "flag", + "flag.Float64": "flag", + "flag.Float64Var": "flag", + "flag.Getter": "flag", + "flag.Int": "flag", + "flag.Int64": "flag", + "flag.Int64Var": "flag", + "flag.IntVar": "flag", + "flag.Lookup": "flag", + "flag.NArg": "flag", + "flag.NFlag": "flag", + "flag.NewFlagSet": "flag", + "flag.PanicOnError": "flag", + "flag.Parse": "flag", + "flag.Parsed": "flag", + "flag.PrintDefaults": "flag", + "flag.Set": "flag", + "flag.String": "flag", + "flag.StringVar": "flag", + "flag.Uint": "flag", + "flag.Uint64": "flag", + "flag.Uint64Var": "flag", + "flag.UintVar": "flag", + "flag.Usage": "flag", + "flag.Value": "flag", + "flag.Var": "flag", + "flag.Visit": "flag", + "flag.VisitAll": "flag", + "flate.BestCompression": "compress/flate", + "flate.BestSpeed": "compress/flate", + "flate.CorruptInputError": "compress/flate", + "flate.DefaultCompression": "compress/flate", + "flate.InternalError": "compress/flate", + "flate.NewReader": "compress/flate", + "flate.NewReaderDict": "compress/flate", + "flate.NewWriter": "compress/flate", + "flate.NewWriterDict": "compress/flate", + "flate.NoCompression": "compress/flate", + "flate.ReadError": "compress/flate", + "flate.Reader": "compress/flate", + "flate.WriteError": "compress/flate", + "flate.Writer": "compress/flate", + "fmt.Errorf": "fmt", + "fmt.Formatter": "fmt", + "fmt.Fprint": "fmt", + "fmt.Fprintf": "fmt", + "fmt.Fprintln": "fmt", + "fmt.Fscan": "fmt", + "fmt.Fscanf": "fmt", + "fmt.Fscanln": "fmt", + "fmt.GoStringer": "fmt", + "fmt.Print": "fmt", + "fmt.Printf": "fmt", + "fmt.Println": "fmt", + "fmt.Scan": "fmt", + "fmt.ScanState": "fmt", + "fmt.Scanf": "fmt", + "fmt.Scanln": "fmt", + "fmt.Scanner": "fmt", + "fmt.Sprint": "fmt", + "fmt.Sprintf": "fmt", + "fmt.Sprintln": "fmt", + "fmt.Sscan": "fmt", + "fmt.Sscanf": "fmt", + "fmt.Sscanln": "fmt", + "fmt.State": "fmt", + "fmt.Stringer": "fmt", + "fnv.New32": "hash/fnv", + "fnv.New32a": "hash/fnv", + "fnv.New64": "hash/fnv", + "fnv.New64a": "hash/fnv", + "format.Node": "go/format", + "format.Source": "go/format", + "gif.Decode": "image/gif", + "gif.DecodeAll": "image/gif", + "gif.DecodeConfig": "image/gif", + "gif.Encode": "image/gif", + "gif.EncodeAll": "image/gif", + "gif.GIF": "image/gif", + "gif.Options": "image/gif", + "gob.CommonType": "encoding/gob", + "gob.Decoder": "encoding/gob", + "gob.Encoder": "encoding/gob", + "gob.GobDecoder": "encoding/gob", + "gob.GobEncoder": "encoding/gob", + "gob.NewDecoder": "encoding/gob", + "gob.NewEncoder": "encoding/gob", + "gob.Register": "encoding/gob", + "gob.RegisterName": "encoding/gob", + "gosym.DecodingError": "debug/gosym", + "gosym.Func": "debug/gosym", + "gosym.LineTable": "debug/gosym", + "gosym.NewLineTable": "debug/gosym", + "gosym.NewTable": "debug/gosym", + "gosym.Obj": "debug/gosym", + "gosym.Sym": "debug/gosym", + "gosym.Table": "debug/gosym", + "gosym.UnknownFileError": "debug/gosym", + "gosym.UnknownLineError": "debug/gosym", + "gzip.BestCompression": "compress/gzip", + "gzip.BestSpeed": "compress/gzip", + "gzip.DefaultCompression": "compress/gzip", + "gzip.ErrChecksum": "compress/gzip", + "gzip.ErrHeader": "compress/gzip", + "gzip.Header": "compress/gzip", + "gzip.NewReader": "compress/gzip", + "gzip.NewWriter": "compress/gzip", + "gzip.NewWriterLevel": "compress/gzip", + "gzip.NoCompression": "compress/gzip", + "gzip.Reader": "compress/gzip", + "gzip.Writer": "compress/gzip", + "hash.Hash": "hash", + "hash.Hash32": "hash", + "hash.Hash64": "hash", + "heap.Fix": "container/heap", + "heap.Init": "container/heap", + "heap.Interface": "container/heap", + "heap.Pop": "container/heap", + "heap.Push": "container/heap", + "heap.Remove": "container/heap", + "hex.Decode": "encoding/hex", + "hex.DecodeString": "encoding/hex", + "hex.DecodedLen": "encoding/hex", + "hex.Dump": "encoding/hex", + "hex.Dumper": "encoding/hex", + "hex.Encode": "encoding/hex", + "hex.EncodeToString": "encoding/hex", + "hex.EncodedLen": "encoding/hex", + "hex.ErrLength": "encoding/hex", + "hex.InvalidByteError": "encoding/hex", + "hmac.Equal": "crypto/hmac", + "hmac.New": "crypto/hmac", + "html.EscapeString": "html", + "html.UnescapeString": "html", + "http.CanonicalHeaderKey": "net/http", + "http.Client": "net/http", + "http.CloseNotifier": "net/http", + "http.Cookie": "net/http", + "http.CookieJar": "net/http", + "http.DefaultClient": "net/http", + "http.DefaultMaxHeaderBytes": "net/http", + "http.DefaultMaxIdleConnsPerHost": "net/http", + "http.DefaultServeMux": "net/http", + "http.DefaultTransport": "net/http", + "http.DetectContentType": "net/http", + "http.Dir": "net/http", + "http.ErrBodyNotAllowed": "net/http", + "http.ErrBodyReadAfterClose": "net/http", + "http.ErrContentLength": "net/http", + "http.ErrHandlerTimeout": "net/http", + "http.ErrHeaderTooLong": "net/http", + "http.ErrHijacked": "net/http", + "http.ErrLineTooLong": "net/http", + "http.ErrMissingBoundary": "net/http", + "http.ErrMissingContentLength": "net/http", + "http.ErrMissingFile": "net/http", + "http.ErrNoCookie": "net/http", + "http.ErrNoLocation": "net/http", + "http.ErrNotMultipart": "net/http", + "http.ErrNotSupported": "net/http", + "http.ErrShortBody": "net/http", + "http.ErrUnexpectedTrailer": "net/http", + "http.ErrWriteAfterFlush": "net/http", + "http.Error": "net/http", + "http.File": "net/http", + "http.FileServer": "net/http", + "http.FileSystem": "net/http", + "http.Flusher": "net/http", + "http.Get": "net/http", + "http.Handle": "net/http", + "http.HandleFunc": "net/http", + "http.Handler": "net/http", + "http.HandlerFunc": "net/http", + "http.Head": "net/http", + "http.Header": "net/http", + "http.Hijacker": "net/http", + "http.ListenAndServe": "net/http", + "http.ListenAndServeTLS": "net/http", + "http.MaxBytesReader": "net/http", + "http.NewFileTransport": "net/http", + "http.NewRequest": "net/http", + "http.NewServeMux": "net/http", + "http.NotFound": "net/http", + "http.NotFoundHandler": "net/http", + "http.ParseHTTPVersion": "net/http", + "http.ParseTime": "net/http", + "http.Post": "net/http", + "http.PostForm": "net/http", + "http.ProtocolError": "net/http", + "http.ProxyFromEnvironment": "net/http", + "http.ProxyURL": "net/http", + "http.ReadRequest": "net/http", + "http.ReadResponse": "net/http", + "http.Redirect": "net/http", + "http.RedirectHandler": "net/http", + "http.Request": "net/http", + "http.Response": "net/http", + "http.ResponseWriter": "net/http", + "http.RoundTripper": "net/http", + "http.Serve": "net/http", + "http.ServeContent": "net/http", + "http.ServeFile": "net/http", + "http.ServeMux": "net/http", + "http.Server": "net/http", + "http.SetCookie": "net/http", + "http.StatusAccepted": "net/http", + "http.StatusBadGateway": "net/http", + "http.StatusBadRequest": "net/http", + "http.StatusConflict": "net/http", + "http.StatusContinue": "net/http", + "http.StatusCreated": "net/http", + "http.StatusExpectationFailed": "net/http", + "http.StatusForbidden": "net/http", + "http.StatusFound": "net/http", + "http.StatusGatewayTimeout": "net/http", + "http.StatusGone": "net/http", + "http.StatusHTTPVersionNotSupported": "net/http", + "http.StatusInternalServerError": "net/http", + "http.StatusLengthRequired": "net/http", + "http.StatusMethodNotAllowed": "net/http", + "http.StatusMovedPermanently": "net/http", + "http.StatusMultipleChoices": "net/http", + "http.StatusNoContent": "net/http", + "http.StatusNonAuthoritativeInfo": "net/http", + "http.StatusNotAcceptable": "net/http", + "http.StatusNotFound": "net/http", + "http.StatusNotImplemented": "net/http", + "http.StatusNotModified": "net/http", + "http.StatusOK": "net/http", + "http.StatusPartialContent": "net/http", + "http.StatusPaymentRequired": "net/http", + "http.StatusPreconditionFailed": "net/http", + "http.StatusProxyAuthRequired": "net/http", + "http.StatusRequestEntityTooLarge": "net/http", + "http.StatusRequestTimeout": "net/http", + "http.StatusRequestURITooLong": "net/http", + "http.StatusRequestedRangeNotSatisfiable": "net/http", + "http.StatusResetContent": "net/http", + "http.StatusSeeOther": "net/http", + "http.StatusServiceUnavailable": "net/http", + "http.StatusSwitchingProtocols": "net/http", + "http.StatusTeapot": "net/http", + "http.StatusTemporaryRedirect": "net/http", + "http.StatusText": "net/http", + "http.StatusUnauthorized": "net/http", + "http.StatusUnsupportedMediaType": "net/http", + "http.StatusUseProxy": "net/http", + "http.StripPrefix": "net/http", + "http.TimeFormat": "net/http", + "http.TimeoutHandler": "net/http", + "http.Transport": "net/http", + "httptest.DefaultRemoteAddr": "net/http/httptest", + "httptest.NewRecorder": "net/http/httptest", + "httptest.NewServer": "net/http/httptest", + "httptest.NewTLSServer": "net/http/httptest", + "httptest.NewUnstartedServer": "net/http/httptest", + "httptest.ResponseRecorder": "net/http/httptest", + "httptest.Server": "net/http/httptest", + "httputil.ClientConn": "net/http/httputil", + "httputil.DumpRequest": "net/http/httputil", + "httputil.DumpRequestOut": "net/http/httputil", + "httputil.DumpResponse": "net/http/httputil", + "httputil.ErrClosed": "net/http/httputil", + "httputil.ErrLineTooLong": "net/http/httputil", + "httputil.ErrPersistEOF": "net/http/httputil", + "httputil.ErrPipeline": "net/http/httputil", + "httputil.NewChunkedReader": "net/http/httputil", + "httputil.NewChunkedWriter": "net/http/httputil", + "httputil.NewClientConn": "net/http/httputil", + "httputil.NewProxyClientConn": "net/http/httputil", + "httputil.NewServerConn": "net/http/httputil", + "httputil.NewSingleHostReverseProxy": "net/http/httputil", + "httputil.ReverseProxy": "net/http/httputil", + "httputil.ServerConn": "net/http/httputil", + "image.Alpha": "image", + "image.Alpha16": "image", + "image.Black": "image", + "image.Config": "image", + "image.Decode": "image", + "image.DecodeConfig": "image", + "image.ErrFormat": "image", + "image.Gray": "image", + "image.Gray16": "image", + "image.Image": "image", + "image.NRGBA": "image", + "image.NRGBA64": "image", + "image.NewAlpha": "image", + "image.NewAlpha16": "image", + "image.NewGray": "image", + "image.NewGray16": "image", + "image.NewNRGBA": "image", + "image.NewNRGBA64": "image", + "image.NewPaletted": "image", + "image.NewRGBA": "image", + "image.NewRGBA64": "image", + "image.NewUniform": "image", + "image.NewYCbCr": "image", + "image.Opaque": "image", + "image.Paletted": "image", + "image.PalettedImage": "image", + "image.Point": "image", + "image.Pt": "image", + "image.RGBA": "image", + "image.RGBA64": "image", + "image.Rect": "image", + "image.Rectangle": "image", + "image.RegisterFormat": "image", + "image.Transparent": "image", + "image.Uniform": "image", + "image.White": "image", + "image.YCbCr": "image", + "image.YCbCrSubsampleRatio": "image", + "image.YCbCrSubsampleRatio420": "image", + "image.YCbCrSubsampleRatio422": "image", + "image.YCbCrSubsampleRatio440": "image", + "image.YCbCrSubsampleRatio444": "image", + "image.ZP": "image", + "image.ZR": "image", + "io.ByteReader": "io", + "io.ByteScanner": "io", + "io.ByteWriter": "io", + "io.Closer": "io", + "io.Copy": "io", + "io.CopyN": "io", + "io.EOF": "io", + "io.ErrClosedPipe": "io", + "io.ErrNoProgress": "io", + "io.ErrShortBuffer": "io", + "io.ErrShortWrite": "io", + "io.ErrUnexpectedEOF": "io", + "io.LimitReader": "io", + "io.LimitedReader": "io", + "io.MultiReader": "io", + "io.MultiWriter": "io", + "io.NewSectionReader": "io", + "io.Pipe": "io", + "io.PipeReader": "io", + "io.PipeWriter": "io", + "io.ReadAtLeast": "io", + "io.ReadCloser": "io", + "io.ReadFull": "io", + "io.ReadSeeker": "io", + "io.ReadWriteCloser": "io", + "io.ReadWriteSeeker": "io", + "io.ReadWriter": "io", + "io.Reader": "io", + "io.ReaderAt": "io", + "io.ReaderFrom": "io", + "io.RuneReader": "io", + "io.RuneScanner": "io", + "io.SectionReader": "io", + "io.Seeker": "io", + "io.TeeReader": "io", + "io.WriteCloser": "io", + "io.WriteSeeker": "io", + "io.WriteString": "io", + "io.Writer": "io", + "io.WriterAt": "io", + "io.WriterTo": "io", + "iotest.DataErrReader": "testing/iotest", + "iotest.ErrTimeout": "testing/iotest", + "iotest.HalfReader": "testing/iotest", + "iotest.NewReadLogger": "testing/iotest", + "iotest.NewWriteLogger": "testing/iotest", + "iotest.OneByteReader": "testing/iotest", + "iotest.TimeoutReader": "testing/iotest", + "iotest.TruncateWriter": "testing/iotest", + "ioutil.Discard": "io/ioutil", + "ioutil.NopCloser": "io/ioutil", + "ioutil.ReadAll": "io/ioutil", + "ioutil.ReadDir": "io/ioutil", + "ioutil.ReadFile": "io/ioutil", + "ioutil.TempDir": "io/ioutil", + "ioutil.TempFile": "io/ioutil", + "ioutil.WriteFile": "io/ioutil", + "jpeg.Decode": "image/jpeg", + "jpeg.DecodeConfig": "image/jpeg", + "jpeg.DefaultQuality": "image/jpeg", + "jpeg.Encode": "image/jpeg", + "jpeg.FormatError": "image/jpeg", + "jpeg.Options": "image/jpeg", + "jpeg.Reader": "image/jpeg", + "jpeg.UnsupportedError": "image/jpeg", + "json.Compact": "encoding/json", + "json.Decoder": "encoding/json", + "json.Encoder": "encoding/json", + "json.HTMLEscape": "encoding/json", + "json.Indent": "encoding/json", + "json.InvalidUTF8Error": "encoding/json", + "json.InvalidUnmarshalError": "encoding/json", + "json.Marshal": "encoding/json", + "json.MarshalIndent": "encoding/json", + "json.Marshaler": "encoding/json", + "json.MarshalerError": "encoding/json", + "json.NewDecoder": "encoding/json", + "json.NewEncoder": "encoding/json", + "json.Number": "encoding/json", + "json.RawMessage": "encoding/json", + "json.SyntaxError": "encoding/json", + "json.Unmarshal": "encoding/json", + "json.UnmarshalFieldError": "encoding/json", + "json.UnmarshalTypeError": "encoding/json", + "json.Unmarshaler": "encoding/json", + "json.UnsupportedTypeError": "encoding/json", + "json.UnsupportedValueError": "encoding/json", + "jsonrpc.Dial": "net/rpc/jsonrpc", + "jsonrpc.NewClient": "net/rpc/jsonrpc", + "jsonrpc.NewClientCodec": "net/rpc/jsonrpc", + "jsonrpc.NewServerCodec": "net/rpc/jsonrpc", + "jsonrpc.ServeConn": "net/rpc/jsonrpc", + "list.Element": "container/list", + "list.List": "container/list", + "list.New": "container/list", + "log.Fatal": "log", + "log.Fatalf": "log", + "log.Fatalln": "log", + "log.Flags": "log", + "log.Ldate": "log", + "log.Llongfile": "log", + "log.Lmicroseconds": "log", + "log.Logger": "log", + "log.Lshortfile": "log", + "log.LstdFlags": "log", + "log.Ltime": "log", + "log.New": "log", + "log.Panic": "log", + "log.Panicf": "log", + "log.Panicln": "log", + "log.Prefix": "log", + "log.Print": "log", + "log.Printf": "log", + "log.Println": "log", + "log.SetFlags": "log", + "log.SetOutput": "log", + "log.SetPrefix": "log", + "lzw.LSB": "compress/lzw", + "lzw.MSB": "compress/lzw", + "lzw.NewReader": "compress/lzw", + "lzw.NewWriter": "compress/lzw", + "lzw.Order": "compress/lzw", + "macho.Cpu": "debug/macho", + "macho.Cpu386": "debug/macho", + "macho.CpuAmd64": "debug/macho", + "macho.Dylib": "debug/macho", + "macho.DylibCmd": "debug/macho", + "macho.Dysymtab": "debug/macho", + "macho.DysymtabCmd": "debug/macho", + "macho.File": "debug/macho", + "macho.FileHeader": "debug/macho", + "macho.FormatError": "debug/macho", + "macho.Load": "debug/macho", + "macho.LoadBytes": "debug/macho", + "macho.LoadCmd": "debug/macho", + "macho.LoadCmdDylib": "debug/macho", + "macho.LoadCmdDylinker": "debug/macho", + "macho.LoadCmdDysymtab": "debug/macho", + "macho.LoadCmdSegment": "debug/macho", + "macho.LoadCmdSegment64": "debug/macho", + "macho.LoadCmdSymtab": "debug/macho", + "macho.LoadCmdThread": "debug/macho", + "macho.LoadCmdUnixThread": "debug/macho", + "macho.Magic32": "debug/macho", + "macho.Magic64": "debug/macho", + "macho.NewFile": "debug/macho", + "macho.Nlist32": "debug/macho", + "macho.Nlist64": "debug/macho", + "macho.Open": "debug/macho", + "macho.Regs386": "debug/macho", + "macho.RegsAMD64": "debug/macho", + "macho.Section": "debug/macho", + "macho.Section32": "debug/macho", + "macho.Section64": "debug/macho", + "macho.SectionHeader": "debug/macho", + "macho.Segment": "debug/macho", + "macho.Segment32": "debug/macho", + "macho.Segment64": "debug/macho", + "macho.SegmentHeader": "debug/macho", + "macho.Symbol": "debug/macho", + "macho.Symtab": "debug/macho", + "macho.SymtabCmd": "debug/macho", + "macho.Thread": "debug/macho", + "macho.Type": "debug/macho", + "macho.TypeExec": "debug/macho", + "macho.TypeObj": "debug/macho", + "mail.Address": "net/mail", + "mail.ErrHeaderNotPresent": "net/mail", + "mail.Header": "net/mail", + "mail.Message": "net/mail", + "mail.ParseAddress": "net/mail", + "mail.ParseAddressList": "net/mail", + "mail.ReadMessage": "net/mail", + "math.Abs": "math", + "math.Acos": "math", + "math.Acosh": "math", + "math.Asin": "math", + "math.Asinh": "math", + "math.Atan": "math", + "math.Atan2": "math", + "math.Atanh": "math", + "math.Cbrt": "math", + "math.Ceil": "math", + "math.Copysign": "math", + "math.Cos": "math", + "math.Cosh": "math", + "math.Dim": "math", + "math.E": "math", + "math.Erf": "math", + "math.Erfc": "math", + "math.Exp": "math", + "math.Exp2": "math", + "math.Expm1": "math", + "math.Float32bits": "math", + "math.Float32frombits": "math", + "math.Float64bits": "math", + "math.Float64frombits": "math", + "math.Floor": "math", + "math.Frexp": "math", + "math.Gamma": "math", + "math.Hypot": "math", + "math.Ilogb": "math", + "math.Inf": "math", + "math.IsInf": "math", + "math.IsNaN": "math", + "math.J0": "math", + "math.J1": "math", + "math.Jn": "math", + "math.Ldexp": "math", + "math.Lgamma": "math", + "math.Ln10": "math", + "math.Ln2": "math", + "math.Log": "math", + "math.Log10": "math", + "math.Log10E": "math", + "math.Log1p": "math", + "math.Log2": "math", + "math.Log2E": "math", + "math.Logb": "math", + "math.Max": "math", + "math.MaxFloat32": "math", + "math.MaxFloat64": "math", + "math.MaxInt16": "math", + "math.MaxInt32": "math", + "math.MaxInt64": "math", + "math.MaxInt8": "math", + "math.MaxUint16": "math", + "math.MaxUint32": "math", + "math.MaxUint64": "math", + "math.MaxUint8": "math", + "math.Min": "math", + "math.MinInt16": "math", + "math.MinInt32": "math", + "math.MinInt64": "math", + "math.MinInt8": "math", + "math.Mod": "math", + "math.Modf": "math", + "math.NaN": "math", + "math.Nextafter": "math", + "math.Phi": "math", + "math.Pi": "math", + "math.Pow": "math", + "math.Pow10": "math", + "math.Remainder": "math", + "math.Signbit": "math", + "math.Sin": "math", + "math.Sincos": "math", + "math.Sinh": "math", + "math.SmallestNonzeroFloat32": "math", + "math.SmallestNonzeroFloat64": "math", + "math.Sqrt": "math", + "math.Sqrt2": "math", + "math.SqrtE": "math", + "math.SqrtPhi": "math", + "math.SqrtPi": "math", + "math.Tan": "math", + "math.Tanh": "math", + "math.Trunc": "math", + "math.Y0": "math", + "math.Y1": "math", + "math.Yn": "math", + "md5.BlockSize": "crypto/md5", + "md5.New": "crypto/md5", + "md5.Size": "crypto/md5", + "md5.Sum": "crypto/md5", + "mime.AddExtensionType": "mime", + "mime.FormatMediaType": "mime", + "mime.ParseMediaType": "mime", + "mime.TypeByExtension": "mime", + "multipart.File": "mime/multipart", + "multipart.FileHeader": "mime/multipart", + "multipart.Form": "mime/multipart", + "multipart.NewReader": "mime/multipart", + "multipart.NewWriter": "mime/multipart", + "multipart.Part": "mime/multipart", + "multipart.Reader": "mime/multipart", + "multipart.Writer": "mime/multipart", + "net.Addr": "net", + "net.AddrError": "net", + "net.CIDRMask": "net", + "net.Conn": "net", + "net.DNSConfigError": "net", + "net.DNSError": "net", + "net.Dial": "net", + "net.DialIP": "net", + "net.DialTCP": "net", + "net.DialTimeout": "net", + "net.DialUDP": "net", + "net.DialUnix": "net", + "net.Dialer": "net", + "net.ErrWriteToConnected": "net", + "net.Error": "net", + "net.FileConn": "net", + "net.FileListener": "net", + "net.FilePacketConn": "net", + "net.FlagBroadcast": "net", + "net.FlagLoopback": "net", + "net.FlagMulticast": "net", + "net.FlagPointToPoint": "net", + "net.FlagUp": "net", + "net.Flags": "net", + "net.HardwareAddr": "net", + "net.IP": "net", + "net.IPAddr": "net", + "net.IPConn": "net", + "net.IPMask": "net", + "net.IPNet": "net", + "net.IPv4": "net", + "net.IPv4Mask": "net", + "net.IPv4allrouter": "net", + "net.IPv4allsys": "net", + "net.IPv4bcast": "net", + "net.IPv4len": "net", + "net.IPv4zero": "net", + "net.IPv6interfacelocalallnodes": "net", + "net.IPv6len": "net", + "net.IPv6linklocalallnodes": "net", + "net.IPv6linklocalallrouters": "net", + "net.IPv6loopback": "net", + "net.IPv6unspecified": "net", + "net.IPv6zero": "net", + "net.Interface": "net", + "net.InterfaceAddrs": "net", + "net.InterfaceByIndex": "net", + "net.InterfaceByName": "net", + "net.Interfaces": "net", + "net.InvalidAddrError": "net", + "net.JoinHostPort": "net", + "net.Listen": "net", + "net.ListenIP": "net", + "net.ListenMulticastUDP": "net", + "net.ListenPacket": "net", + "net.ListenTCP": "net", + "net.ListenUDP": "net", + "net.ListenUnix": "net", + "net.ListenUnixgram": "net", + "net.Listener": "net", + "net.LookupAddr": "net", + "net.LookupCNAME": "net", + "net.LookupHost": "net", + "net.LookupIP": "net", + "net.LookupMX": "net", + "net.LookupNS": "net", + "net.LookupPort": "net", + "net.LookupSRV": "net", + "net.LookupTXT": "net", + "net.MX": "net", + "net.NS": "net", + "net.OpError": "net", + "net.PacketConn": "net", + "net.ParseCIDR": "net", + "net.ParseError": "net", + "net.ParseIP": "net", + "net.ParseMAC": "net", + "net.Pipe": "net", + "net.ResolveIPAddr": "net", + "net.ResolveTCPAddr": "net", + "net.ResolveUDPAddr": "net", + "net.ResolveUnixAddr": "net", + "net.SRV": "net", + "net.SplitHostPort": "net", + "net.TCPAddr": "net", + "net.TCPConn": "net", + "net.TCPListener": "net", + "net.UDPAddr": "net", + "net.UDPConn": "net", + "net.UnixAddr": "net", + "net.UnixConn": "net", + "net.UnixListener": "net", + "net.UnknownNetworkError": "net", + "os.Args": "os", + "os.Chdir": "os", + "os.Chmod": "os", + "os.Chown": "os", + "os.Chtimes": "os", + "os.Clearenv": "os", + "os.Create": "os", + "os.DevNull": "os", + "os.Environ": "os", + "os.ErrExist": "os", + "os.ErrInvalid": "os", + "os.ErrNotExist": "os", + "os.ErrPermission": "os", + "os.Exit": "os", + "os.Expand": "os", + "os.ExpandEnv": "os", + "os.File": "os", + "os.FileInfo": "os", + "os.FileMode": "os", + "os.FindProcess": "os", + "os.Getegid": "os", + "os.Getenv": "os", + "os.Geteuid": "os", + "os.Getgid": "os", + "os.Getgroups": "os", + "os.Getpagesize": "os", + "os.Getpid": "os", + "os.Getppid": "os", + "os.Getuid": "os", + "os.Getwd": "os", + "os.Hostname": "os", + "os.Interrupt": "os", + "os.IsExist": "os", + "os.IsNotExist": "os", + "os.IsPathSeparator": "os", + "os.IsPermission": "os", + "os.Kill": "os", + "os.Lchown": "os", + "os.Link": "os", + "os.LinkError": "os", + "os.Lstat": "os", + "os.Mkdir": "os", + "os.MkdirAll": "os", + "os.ModeAppend": "os", + "os.ModeCharDevice": "os", + "os.ModeDevice": "os", + "os.ModeDir": "os", + "os.ModeExclusive": "os", + "os.ModeNamedPipe": "os", + "os.ModePerm": "os", + "os.ModeSetgid": "os", + "os.ModeSetuid": "os", + "os.ModeSocket": "os", + "os.ModeSticky": "os", + "os.ModeSymlink": "os", + "os.ModeTemporary": "os", + "os.ModeType": "os", + "os.NewFile": "os", + "os.NewSyscallError": "os", + "os.O_APPEND": "os", + "os.O_CREATE": "os", + "os.O_EXCL": "os", + "os.O_RDONLY": "os", + "os.O_RDWR": "os", + "os.O_SYNC": "os", + "os.O_TRUNC": "os", + "os.O_WRONLY": "os", + "os.Open": "os", + "os.OpenFile": "os", + "os.PathError": "os", + "os.PathListSeparator": "os", + "os.PathSeparator": "os", + "os.Pipe": "os", + "os.ProcAttr": "os", + "os.Process": "os", + "os.ProcessState": "os", + "os.Readlink": "os", + "os.Remove": "os", + "os.RemoveAll": "os", + "os.Rename": "os", + "os.SEEK_CUR": "os", + "os.SEEK_END": "os", + "os.SEEK_SET": "os", + "os.SameFile": "os", + "os.Setenv": "os", + "os.Signal": "os", + "os.StartProcess": "os", + "os.Stat": "os", + "os.Stderr": "os", + "os.Stdin": "os", + "os.Stdout": "os", + "os.Symlink": "os", + "os.SyscallError": "os", + "os.TempDir": "os", + "os.Truncate": "os", + "palette.Plan9": "image/color/palette", + "palette.WebSafe": "image/color/palette", + "parse.ActionNode": "text/template/parse", + "parse.BoolNode": "text/template/parse", + "parse.BranchNode": "text/template/parse", + "parse.ChainNode": "text/template/parse", + "parse.CommandNode": "text/template/parse", + "parse.DotNode": "text/template/parse", + "parse.FieldNode": "text/template/parse", + "parse.IdentifierNode": "text/template/parse", + "parse.IfNode": "text/template/parse", + "parse.IsEmptyTree": "text/template/parse", + "parse.ListNode": "text/template/parse", + "parse.New": "text/template/parse", + "parse.NewIdentifier": "text/template/parse", + "parse.NilNode": "text/template/parse", + "parse.Node": "text/template/parse", + "parse.NodeAction": "text/template/parse", + "parse.NodeBool": "text/template/parse", + "parse.NodeChain": "text/template/parse", + "parse.NodeCommand": "text/template/parse", + "parse.NodeDot": "text/template/parse", + "parse.NodeField": "text/template/parse", + "parse.NodeIdentifier": "text/template/parse", + "parse.NodeIf": "text/template/parse", + "parse.NodeList": "text/template/parse", + "parse.NodeNil": "text/template/parse", + "parse.NodeNumber": "text/template/parse", + "parse.NodePipe": "text/template/parse", + "parse.NodeRange": "text/template/parse", + "parse.NodeString": "text/template/parse", + "parse.NodeTemplate": "text/template/parse", + "parse.NodeText": "text/template/parse", + "parse.NodeType": "text/template/parse", + "parse.NodeVariable": "text/template/parse", + "parse.NodeWith": "text/template/parse", + "parse.NumberNode": "text/template/parse", + "parse.Parse": "text/template/parse", + "parse.PipeNode": "text/template/parse", + "parse.Pos": "text/template/parse", + "parse.RangeNode": "text/template/parse", + "parse.StringNode": "text/template/parse", + "parse.TemplateNode": "text/template/parse", + "parse.TextNode": "text/template/parse", + "parse.Tree": "text/template/parse", + "parse.VariableNode": "text/template/parse", + "parse.WithNode": "text/template/parse", + "parser.AllErrors": "go/parser", + "parser.DeclarationErrors": "go/parser", + "parser.ImportsOnly": "go/parser", + "parser.Mode": "go/parser", + "parser.PackageClauseOnly": "go/parser", + "parser.ParseComments": "go/parser", + "parser.ParseDir": "go/parser", + "parser.ParseExpr": "go/parser", + "parser.ParseFile": "go/parser", + "parser.SpuriousErrors": "go/parser", + "parser.Trace": "go/parser", + "path.Base": "path", + "path.Clean": "path", + "path.Dir": "path", + "path.ErrBadPattern": "path", + "path.Ext": "path", + "path.IsAbs": "path", + "path.Join": "path", + "path.Match": "path", + "path.Split": "path", + "pe.COFFSymbol": "debug/pe", + "pe.COFFSymbolSize": "debug/pe", + "pe.File": "debug/pe", + "pe.FileHeader": "debug/pe", + "pe.FormatError": "debug/pe", + "pe.IMAGE_FILE_MACHINE_AM33": "debug/pe", + "pe.IMAGE_FILE_MACHINE_AMD64": "debug/pe", + "pe.IMAGE_FILE_MACHINE_ARM": "debug/pe", + "pe.IMAGE_FILE_MACHINE_EBC": "debug/pe", + "pe.IMAGE_FILE_MACHINE_I386": "debug/pe", + "pe.IMAGE_FILE_MACHINE_IA64": "debug/pe", + "pe.IMAGE_FILE_MACHINE_M32R": "debug/pe", + "pe.IMAGE_FILE_MACHINE_MIPS16": "debug/pe", + "pe.IMAGE_FILE_MACHINE_MIPSFPU": "debug/pe", + "pe.IMAGE_FILE_MACHINE_MIPSFPU16": "debug/pe", + "pe.IMAGE_FILE_MACHINE_POWERPC": "debug/pe", + "pe.IMAGE_FILE_MACHINE_POWERPCFP": "debug/pe", + "pe.IMAGE_FILE_MACHINE_R4000": "debug/pe", + "pe.IMAGE_FILE_MACHINE_SH3": "debug/pe", + "pe.IMAGE_FILE_MACHINE_SH3DSP": "debug/pe", + "pe.IMAGE_FILE_MACHINE_SH4": "debug/pe", + "pe.IMAGE_FILE_MACHINE_SH5": "debug/pe", + "pe.IMAGE_FILE_MACHINE_THUMB": "debug/pe", + "pe.IMAGE_FILE_MACHINE_UNKNOWN": "debug/pe", + "pe.IMAGE_FILE_MACHINE_WCEMIPSV2": "debug/pe", + "pe.ImportDirectory": "debug/pe", + "pe.NewFile": "debug/pe", + "pe.Open": "debug/pe", + "pe.Section": "debug/pe", + "pe.SectionHeader": "debug/pe", + "pe.SectionHeader32": "debug/pe", + "pe.Symbol": "debug/pe", + "pem.Block": "encoding/pem", + "pem.Decode": "encoding/pem", + "pem.Encode": "encoding/pem", + "pem.EncodeToMemory": "encoding/pem", + "pkix.AlgorithmIdentifier": "crypto/x509/pkix", + "pkix.AttributeTypeAndValue": "crypto/x509/pkix", + "pkix.CertificateList": "crypto/x509/pkix", + "pkix.Extension": "crypto/x509/pkix", + "pkix.Name": "crypto/x509/pkix", + "pkix.RDNSequence": "crypto/x509/pkix", + "pkix.RelativeDistinguishedNameSET": "crypto/x509/pkix", + "pkix.RevokedCertificate": "crypto/x509/pkix", + "pkix.TBSCertificateList": "crypto/x509/pkix", + "png.Decode": "image/png", + "png.DecodeConfig": "image/png", + "png.Encode": "image/png", + "png.FormatError": "image/png", + "png.UnsupportedError": "image/png", + "pprof.Cmdline": "net/http/pprof", + "pprof.Handler": "net/http/pprof", + "pprof.Index": "net/http/pprof", + "pprof.Lookup": "runtime/pprof", + "pprof.NewProfile": "runtime/pprof", + // "pprof.Profile" is ambiguous + "pprof.Profiles": "runtime/pprof", + "pprof.StartCPUProfile": "runtime/pprof", + "pprof.StopCPUProfile": "runtime/pprof", + "pprof.Symbol": "net/http/pprof", + "pprof.WriteHeapProfile": "runtime/pprof", + "printer.CommentedNode": "go/printer", + "printer.Config": "go/printer", + "printer.Fprint": "go/printer", + "printer.Mode": "go/printer", + "printer.RawFormat": "go/printer", + "printer.SourcePos": "go/printer", + "printer.TabIndent": "go/printer", + "printer.UseSpaces": "go/printer", + "quick.Check": "testing/quick", + "quick.CheckEqual": "testing/quick", + "quick.CheckEqualError": "testing/quick", + "quick.CheckError": "testing/quick", + "quick.Config": "testing/quick", + "quick.Generator": "testing/quick", + "quick.SetupError": "testing/quick", + "quick.Value": "testing/quick", + "rand.ExpFloat64": "math/rand", + "rand.Float32": "math/rand", + "rand.Float64": "math/rand", + // "rand.Int" is ambiguous + "rand.Int31": "math/rand", + "rand.Int31n": "math/rand", + "rand.Int63": "math/rand", + "rand.Int63n": "math/rand", + "rand.Intn": "math/rand", + "rand.New": "math/rand", + "rand.NewSource": "math/rand", + "rand.NewZipf": "math/rand", + "rand.NormFloat64": "math/rand", + "rand.Perm": "math/rand", + "rand.Prime": "crypto/rand", + "rand.Rand": "math/rand", + "rand.Read": "crypto/rand", + "rand.Reader": "crypto/rand", + "rand.Seed": "math/rand", + "rand.Source": "math/rand", + "rand.Uint32": "math/rand", + "rand.Zipf": "math/rand", + "rc4.Cipher": "crypto/rc4", + "rc4.KeySizeError": "crypto/rc4", + "rc4.NewCipher": "crypto/rc4", + "reflect.Append": "reflect", + "reflect.AppendSlice": "reflect", + "reflect.Array": "reflect", + "reflect.Bool": "reflect", + "reflect.BothDir": "reflect", + "reflect.Chan": "reflect", + "reflect.ChanDir": "reflect", + "reflect.ChanOf": "reflect", + "reflect.Complex128": "reflect", + "reflect.Complex64": "reflect", + "reflect.Copy": "reflect", + "reflect.DeepEqual": "reflect", + "reflect.Float32": "reflect", + "reflect.Float64": "reflect", + "reflect.Func": "reflect", + "reflect.Indirect": "reflect", + "reflect.Int": "reflect", + "reflect.Int16": "reflect", + "reflect.Int32": "reflect", + "reflect.Int64": "reflect", + "reflect.Int8": "reflect", + "reflect.Interface": "reflect", + "reflect.Invalid": "reflect", + "reflect.Kind": "reflect", + "reflect.MakeChan": "reflect", + "reflect.MakeFunc": "reflect", + "reflect.MakeMap": "reflect", + "reflect.MakeSlice": "reflect", + "reflect.Map": "reflect", + "reflect.MapOf": "reflect", + "reflect.Method": "reflect", + "reflect.New": "reflect", + "reflect.NewAt": "reflect", + "reflect.Ptr": "reflect", + "reflect.PtrTo": "reflect", + "reflect.RecvDir": "reflect", + "reflect.Select": "reflect", + "reflect.SelectCase": "reflect", + "reflect.SelectDefault": "reflect", + "reflect.SelectDir": "reflect", + "reflect.SelectRecv": "reflect", + "reflect.SelectSend": "reflect", + "reflect.SendDir": "reflect", + "reflect.Slice": "reflect", + "reflect.SliceHeader": "reflect", + "reflect.SliceOf": "reflect", + "reflect.String": "reflect", + "reflect.StringHeader": "reflect", + "reflect.Struct": "reflect", + "reflect.StructField": "reflect", + "reflect.StructTag": "reflect", + "reflect.TypeOf": "reflect", + "reflect.Uint": "reflect", + "reflect.Uint16": "reflect", + "reflect.Uint32": "reflect", + "reflect.Uint64": "reflect", + "reflect.Uint8": "reflect", + "reflect.Uintptr": "reflect", + "reflect.UnsafePointer": "reflect", + "reflect.Value": "reflect", + "reflect.ValueError": "reflect", + "reflect.ValueOf": "reflect", + "reflect.Zero": "reflect", + "regexp.Compile": "regexp", + "regexp.CompilePOSIX": "regexp", + "regexp.Match": "regexp", + "regexp.MatchReader": "regexp", + "regexp.MatchString": "regexp", + "regexp.MustCompile": "regexp", + "regexp.MustCompilePOSIX": "regexp", + "regexp.QuoteMeta": "regexp", + "regexp.Regexp": "regexp", + "ring.New": "container/ring", + "ring.Ring": "container/ring", + "rpc.Accept": "net/rpc", + "rpc.Call": "net/rpc", + "rpc.Client": "net/rpc", + "rpc.ClientCodec": "net/rpc", + "rpc.DefaultDebugPath": "net/rpc", + "rpc.DefaultRPCPath": "net/rpc", + "rpc.DefaultServer": "net/rpc", + "rpc.Dial": "net/rpc", + "rpc.DialHTTP": "net/rpc", + "rpc.DialHTTPPath": "net/rpc", + "rpc.ErrShutdown": "net/rpc", + "rpc.HandleHTTP": "net/rpc", + "rpc.NewClient": "net/rpc", + "rpc.NewClientWithCodec": "net/rpc", + "rpc.NewServer": "net/rpc", + "rpc.Register": "net/rpc", + "rpc.RegisterName": "net/rpc", + "rpc.Request": "net/rpc", + "rpc.Response": "net/rpc", + "rpc.ServeCodec": "net/rpc", + "rpc.ServeConn": "net/rpc", + "rpc.ServeRequest": "net/rpc", + "rpc.Server": "net/rpc", + "rpc.ServerCodec": "net/rpc", + "rpc.ServerError": "net/rpc", + "rsa.CRTValue": "crypto/rsa", + "rsa.DecryptOAEP": "crypto/rsa", + "rsa.DecryptPKCS1v15": "crypto/rsa", + "rsa.DecryptPKCS1v15SessionKey": "crypto/rsa", + "rsa.EncryptOAEP": "crypto/rsa", + "rsa.EncryptPKCS1v15": "crypto/rsa", + "rsa.ErrDecryption": "crypto/rsa", + "rsa.ErrMessageTooLong": "crypto/rsa", + "rsa.ErrVerification": "crypto/rsa", + "rsa.GenerateKey": "crypto/rsa", + "rsa.GenerateMultiPrimeKey": "crypto/rsa", + "rsa.PSSOptions": "crypto/rsa", + "rsa.PSSSaltLengthAuto": "crypto/rsa", + "rsa.PSSSaltLengthEqualsHash": "crypto/rsa", + "rsa.PrecomputedValues": "crypto/rsa", + "rsa.PrivateKey": "crypto/rsa", + "rsa.PublicKey": "crypto/rsa", + "rsa.SignPKCS1v15": "crypto/rsa", + "rsa.SignPSS": "crypto/rsa", + "rsa.VerifyPKCS1v15": "crypto/rsa", + "rsa.VerifyPSS": "crypto/rsa", + "runtime.BlockProfile": "runtime", + "runtime.BlockProfileRecord": "runtime", + "runtime.Breakpoint": "runtime", + "runtime.CPUProfile": "runtime", + "runtime.Caller": "runtime", + "runtime.Callers": "runtime", + "runtime.Compiler": "runtime", + "runtime.Error": "runtime", + "runtime.Func": "runtime", + "runtime.FuncForPC": "runtime", + "runtime.GC": "runtime", + "runtime.GOARCH": "runtime", + "runtime.GOMAXPROCS": "runtime", + "runtime.GOOS": "runtime", + "runtime.GOROOT": "runtime", + "runtime.Goexit": "runtime", + "runtime.GoroutineProfile": "runtime", + "runtime.Gosched": "runtime", + "runtime.LockOSThread": "runtime", + "runtime.MemProfile": "runtime", + "runtime.MemProfileRate": "runtime", + "runtime.MemProfileRecord": "runtime", + "runtime.MemStats": "runtime", + "runtime.NumCPU": "runtime", + "runtime.NumCgoCall": "runtime", + "runtime.NumGoroutine": "runtime", + "runtime.ReadMemStats": "runtime", + "runtime.SetBlockProfileRate": "runtime", + "runtime.SetCPUProfileRate": "runtime", + "runtime.SetFinalizer": "runtime", + "runtime.Stack": "runtime", + "runtime.StackRecord": "runtime", + "runtime.ThreadCreateProfile": "runtime", + "runtime.TypeAssertionError": "runtime", + "runtime.UnlockOSThread": "runtime", + "runtime.Version": "runtime", + "scanner.Char": "text/scanner", + "scanner.Comment": "text/scanner", + "scanner.EOF": "text/scanner", + "scanner.Error": "go/scanner", + "scanner.ErrorHandler": "go/scanner", + "scanner.ErrorList": "go/scanner", + "scanner.Float": "text/scanner", + "scanner.GoTokens": "text/scanner", + "scanner.GoWhitespace": "text/scanner", + "scanner.Ident": "text/scanner", + "scanner.Int": "text/scanner", + "scanner.Mode": "go/scanner", + "scanner.Position": "text/scanner", + "scanner.PrintError": "go/scanner", + "scanner.RawString": "text/scanner", + "scanner.ScanChars": "text/scanner", + // "scanner.ScanComments" is ambiguous + "scanner.ScanFloats": "text/scanner", + "scanner.ScanIdents": "text/scanner", + "scanner.ScanInts": "text/scanner", + "scanner.ScanRawStrings": "text/scanner", + "scanner.ScanStrings": "text/scanner", + // "scanner.Scanner" is ambiguous + "scanner.SkipComments": "text/scanner", + "scanner.String": "text/scanner", + "scanner.TokenString": "text/scanner", + "sha1.BlockSize": "crypto/sha1", + "sha1.New": "crypto/sha1", + "sha1.Size": "crypto/sha1", + "sha1.Sum": "crypto/sha1", + "sha256.BlockSize": "crypto/sha256", + "sha256.New": "crypto/sha256", + "sha256.New224": "crypto/sha256", + "sha256.Size": "crypto/sha256", + "sha256.Size224": "crypto/sha256", + "sha256.Sum224": "crypto/sha256", + "sha256.Sum256": "crypto/sha256", + "sha512.BlockSize": "crypto/sha512", + "sha512.New": "crypto/sha512", + "sha512.New384": "crypto/sha512", + "sha512.Size": "crypto/sha512", + "sha512.Size384": "crypto/sha512", + "sha512.Sum384": "crypto/sha512", + "sha512.Sum512": "crypto/sha512", + "signal.Notify": "os/signal", + "signal.Stop": "os/signal", + "smtp.Auth": "net/smtp", + "smtp.CRAMMD5Auth": "net/smtp", + "smtp.Client": "net/smtp", + "smtp.Dial": "net/smtp", + "smtp.NewClient": "net/smtp", + "smtp.PlainAuth": "net/smtp", + "smtp.SendMail": "net/smtp", + "smtp.ServerInfo": "net/smtp", + "sort.Float64Slice": "sort", + "sort.Float64s": "sort", + "sort.Float64sAreSorted": "sort", + "sort.IntSlice": "sort", + "sort.Interface": "sort", + "sort.Ints": "sort", + "sort.IntsAreSorted": "sort", + "sort.IsSorted": "sort", + "sort.Reverse": "sort", + "sort.Search": "sort", + "sort.SearchFloat64s": "sort", + "sort.SearchInts": "sort", + "sort.SearchStrings": "sort", + "sort.Sort": "sort", + "sort.Stable": "sort", + "sort.StringSlice": "sort", + "sort.Strings": "sort", + "sort.StringsAreSorted": "sort", + "sql.DB": "database/sql", + "sql.ErrNoRows": "database/sql", + "sql.ErrTxDone": "database/sql", + "sql.NullBool": "database/sql", + "sql.NullFloat64": "database/sql", + "sql.NullInt64": "database/sql", + "sql.NullString": "database/sql", + "sql.Open": "database/sql", + "sql.RawBytes": "database/sql", + "sql.Register": "database/sql", + "sql.Result": "database/sql", + "sql.Row": "database/sql", + "sql.Rows": "database/sql", + "sql.Scanner": "database/sql", + "sql.Stmt": "database/sql", + "sql.Tx": "database/sql", + "strconv.AppendBool": "strconv", + "strconv.AppendFloat": "strconv", + "strconv.AppendInt": "strconv", + "strconv.AppendQuote": "strconv", + "strconv.AppendQuoteRune": "strconv", + "strconv.AppendQuoteRuneToASCII": "strconv", + "strconv.AppendQuoteToASCII": "strconv", + "strconv.AppendUint": "strconv", + "strconv.Atoi": "strconv", + "strconv.CanBackquote": "strconv", + "strconv.ErrRange": "strconv", + "strconv.ErrSyntax": "strconv", + "strconv.FormatBool": "strconv", + "strconv.FormatFloat": "strconv", + "strconv.FormatInt": "strconv", + "strconv.FormatUint": "strconv", + "strconv.IntSize": "strconv", + "strconv.IsPrint": "strconv", + "strconv.Itoa": "strconv", + "strconv.NumError": "strconv", + "strconv.ParseBool": "strconv", + "strconv.ParseFloat": "strconv", + "strconv.ParseInt": "strconv", + "strconv.ParseUint": "strconv", + "strconv.Quote": "strconv", + "strconv.QuoteRune": "strconv", + "strconv.QuoteRuneToASCII": "strconv", + "strconv.QuoteToASCII": "strconv", + "strconv.Unquote": "strconv", + "strconv.UnquoteChar": "strconv", + "strings.Contains": "strings", + "strings.ContainsAny": "strings", + "strings.ContainsRune": "strings", + "strings.Count": "strings", + "strings.EqualFold": "strings", + "strings.Fields": "strings", + "strings.FieldsFunc": "strings", + "strings.HasPrefix": "strings", + "strings.HasSuffix": "strings", + "strings.Index": "strings", + "strings.IndexAny": "strings", + "strings.IndexByte": "strings", + "strings.IndexFunc": "strings", + "strings.IndexRune": "strings", + "strings.Join": "strings", + "strings.LastIndex": "strings", + "strings.LastIndexAny": "strings", + "strings.LastIndexFunc": "strings", + "strings.Map": "strings", + "strings.NewReader": "strings", + "strings.NewReplacer": "strings", + "strings.Reader": "strings", + "strings.Repeat": "strings", + "strings.Replace": "strings", + "strings.Replacer": "strings", + "strings.Split": "strings", + "strings.SplitAfter": "strings", + "strings.SplitAfterN": "strings", + "strings.SplitN": "strings", + "strings.Title": "strings", + "strings.ToLower": "strings", + "strings.ToLowerSpecial": "strings", + "strings.ToTitle": "strings", + "strings.ToTitleSpecial": "strings", + "strings.ToUpper": "strings", + "strings.ToUpperSpecial": "strings", + "strings.Trim": "strings", + "strings.TrimFunc": "strings", + "strings.TrimLeft": "strings", + "strings.TrimLeftFunc": "strings", + "strings.TrimPrefix": "strings", + "strings.TrimRight": "strings", + "strings.TrimRightFunc": "strings", + "strings.TrimSpace": "strings", + "strings.TrimSuffix": "strings", + "subtle.ConstantTimeByteEq": "crypto/subtle", + "subtle.ConstantTimeCompare": "crypto/subtle", + "subtle.ConstantTimeCopy": "crypto/subtle", + "subtle.ConstantTimeEq": "crypto/subtle", + "subtle.ConstantTimeLessOrEq": "crypto/subtle", + "subtle.ConstantTimeSelect": "crypto/subtle", + "suffixarray.Index": "index/suffixarray", + "suffixarray.New": "index/suffixarray", + "sync.Cond": "sync", + "sync.Locker": "sync", + "sync.Mutex": "sync", + "sync.NewCond": "sync", + "sync.Once": "sync", + "sync.RWMutex": "sync", + "sync.WaitGroup": "sync", + "syntax.ClassNL": "regexp/syntax", + "syntax.Compile": "regexp/syntax", + "syntax.DotNL": "regexp/syntax", + "syntax.EmptyBeginLine": "regexp/syntax", + "syntax.EmptyBeginText": "regexp/syntax", + "syntax.EmptyEndLine": "regexp/syntax", + "syntax.EmptyEndText": "regexp/syntax", + "syntax.EmptyNoWordBoundary": "regexp/syntax", + "syntax.EmptyOp": "regexp/syntax", + "syntax.EmptyOpContext": "regexp/syntax", + "syntax.EmptyWordBoundary": "regexp/syntax", + "syntax.ErrInternalError": "regexp/syntax", + "syntax.ErrInvalidCharClass": "regexp/syntax", + "syntax.ErrInvalidCharRange": "regexp/syntax", + "syntax.ErrInvalidEscape": "regexp/syntax", + "syntax.ErrInvalidNamedCapture": "regexp/syntax", + "syntax.ErrInvalidPerlOp": "regexp/syntax", + "syntax.ErrInvalidRepeatOp": "regexp/syntax", + "syntax.ErrInvalidRepeatSize": "regexp/syntax", + "syntax.ErrInvalidUTF8": "regexp/syntax", + "syntax.ErrMissingBracket": "regexp/syntax", + "syntax.ErrMissingParen": "regexp/syntax", + "syntax.ErrMissingRepeatArgument": "regexp/syntax", + "syntax.ErrTrailingBackslash": "regexp/syntax", + "syntax.ErrUnexpectedParen": "regexp/syntax", + "syntax.Error": "regexp/syntax", + "syntax.ErrorCode": "regexp/syntax", + "syntax.Flags": "regexp/syntax", + "syntax.FoldCase": "regexp/syntax", + "syntax.Inst": "regexp/syntax", + "syntax.InstAlt": "regexp/syntax", + "syntax.InstAltMatch": "regexp/syntax", + "syntax.InstCapture": "regexp/syntax", + "syntax.InstEmptyWidth": "regexp/syntax", + "syntax.InstFail": "regexp/syntax", + "syntax.InstMatch": "regexp/syntax", + "syntax.InstNop": "regexp/syntax", + "syntax.InstOp": "regexp/syntax", + "syntax.InstRune": "regexp/syntax", + "syntax.InstRune1": "regexp/syntax", + "syntax.InstRuneAny": "regexp/syntax", + "syntax.InstRuneAnyNotNL": "regexp/syntax", + "syntax.IsWordChar": "regexp/syntax", + "syntax.Literal": "regexp/syntax", + "syntax.MatchNL": "regexp/syntax", + "syntax.NonGreedy": "regexp/syntax", + "syntax.OneLine": "regexp/syntax", + "syntax.Op": "regexp/syntax", + "syntax.OpAlternate": "regexp/syntax", + "syntax.OpAnyChar": "regexp/syntax", + "syntax.OpAnyCharNotNL": "regexp/syntax", + "syntax.OpBeginLine": "regexp/syntax", + "syntax.OpBeginText": "regexp/syntax", + "syntax.OpCapture": "regexp/syntax", + "syntax.OpCharClass": "regexp/syntax", + "syntax.OpConcat": "regexp/syntax", + "syntax.OpEmptyMatch": "regexp/syntax", + "syntax.OpEndLine": "regexp/syntax", + "syntax.OpEndText": "regexp/syntax", + "syntax.OpLiteral": "regexp/syntax", + "syntax.OpNoMatch": "regexp/syntax", + "syntax.OpNoWordBoundary": "regexp/syntax", + "syntax.OpPlus": "regexp/syntax", + "syntax.OpQuest": "regexp/syntax", + "syntax.OpRepeat": "regexp/syntax", + "syntax.OpStar": "regexp/syntax", + "syntax.OpWordBoundary": "regexp/syntax", + "syntax.POSIX": "regexp/syntax", + "syntax.Parse": "regexp/syntax", + "syntax.Perl": "regexp/syntax", + "syntax.PerlX": "regexp/syntax", + "syntax.Prog": "regexp/syntax", + "syntax.Regexp": "regexp/syntax", + "syntax.Simple": "regexp/syntax", + "syntax.UnicodeGroups": "regexp/syntax", + "syntax.WasDollar": "regexp/syntax", + "syscall.AF_ALG": "syscall", + "syscall.AF_APPLETALK": "syscall", + "syscall.AF_ARP": "syscall", + "syscall.AF_ASH": "syscall", + "syscall.AF_ATM": "syscall", + "syscall.AF_ATMPVC": "syscall", + "syscall.AF_ATMSVC": "syscall", + "syscall.AF_AX25": "syscall", + "syscall.AF_BLUETOOTH": "syscall", + "syscall.AF_BRIDGE": "syscall", + "syscall.AF_CAIF": "syscall", + "syscall.AF_CAN": "syscall", + "syscall.AF_CCITT": "syscall", + "syscall.AF_CHAOS": "syscall", + "syscall.AF_CNT": "syscall", + "syscall.AF_COIP": "syscall", + "syscall.AF_DATAKIT": "syscall", + "syscall.AF_DECnet": "syscall", + "syscall.AF_DLI": "syscall", + "syscall.AF_E164": "syscall", + "syscall.AF_ECMA": "syscall", + "syscall.AF_ECONET": "syscall", + "syscall.AF_ENCAP": "syscall", + "syscall.AF_FILE": "syscall", + "syscall.AF_HYLINK": "syscall", + "syscall.AF_IEEE80211": "syscall", + "syscall.AF_IEEE802154": "syscall", + "syscall.AF_IMPLINK": "syscall", + "syscall.AF_INET": "syscall", + "syscall.AF_INET6": "syscall", + "syscall.AF_IPX": "syscall", + "syscall.AF_IRDA": "syscall", + "syscall.AF_ISDN": "syscall", + "syscall.AF_ISO": "syscall", + "syscall.AF_IUCV": "syscall", + "syscall.AF_KEY": "syscall", + "syscall.AF_LAT": "syscall", + "syscall.AF_LINK": "syscall", + "syscall.AF_LLC": "syscall", + "syscall.AF_LOCAL": "syscall", + "syscall.AF_MAX": "syscall", + "syscall.AF_MPLS": "syscall", + "syscall.AF_NATM": "syscall", + "syscall.AF_NDRV": "syscall", + "syscall.AF_NETBEUI": "syscall", + "syscall.AF_NETBIOS": "syscall", + "syscall.AF_NETGRAPH": "syscall", + "syscall.AF_NETLINK": "syscall", + "syscall.AF_NETROM": "syscall", + "syscall.AF_NS": "syscall", + "syscall.AF_OROUTE": "syscall", + "syscall.AF_OSI": "syscall", + "syscall.AF_PACKET": "syscall", + "syscall.AF_PHONET": "syscall", + "syscall.AF_PPP": "syscall", + "syscall.AF_PPPOX": "syscall", + "syscall.AF_PUP": "syscall", + "syscall.AF_RDS": "syscall", + "syscall.AF_RESERVED_36": "syscall", + "syscall.AF_ROSE": "syscall", + "syscall.AF_ROUTE": "syscall", + "syscall.AF_RXRPC": "syscall", + "syscall.AF_SCLUSTER": "syscall", + "syscall.AF_SECURITY": "syscall", + "syscall.AF_SIP": "syscall", + "syscall.AF_SLOW": "syscall", + "syscall.AF_SNA": "syscall", + "syscall.AF_SYSTEM": "syscall", + "syscall.AF_TIPC": "syscall", + "syscall.AF_UNIX": "syscall", + "syscall.AF_UNSPEC": "syscall", + "syscall.AF_VENDOR00": "syscall", + "syscall.AF_VENDOR01": "syscall", + "syscall.AF_VENDOR02": "syscall", + "syscall.AF_VENDOR03": "syscall", + "syscall.AF_VENDOR04": "syscall", + "syscall.AF_VENDOR05": "syscall", + "syscall.AF_VENDOR06": "syscall", + "syscall.AF_VENDOR07": "syscall", + "syscall.AF_VENDOR08": "syscall", + "syscall.AF_VENDOR09": "syscall", + "syscall.AF_VENDOR10": "syscall", + "syscall.AF_VENDOR11": "syscall", + "syscall.AF_VENDOR12": "syscall", + "syscall.AF_VENDOR13": "syscall", + "syscall.AF_VENDOR14": "syscall", + "syscall.AF_VENDOR15": "syscall", + "syscall.AF_VENDOR16": "syscall", + "syscall.AF_VENDOR17": "syscall", + "syscall.AF_VENDOR18": "syscall", + "syscall.AF_VENDOR19": "syscall", + "syscall.AF_VENDOR20": "syscall", + "syscall.AF_VENDOR21": "syscall", + "syscall.AF_VENDOR22": "syscall", + "syscall.AF_VENDOR23": "syscall", + "syscall.AF_VENDOR24": "syscall", + "syscall.AF_VENDOR25": "syscall", + "syscall.AF_VENDOR26": "syscall", + "syscall.AF_VENDOR27": "syscall", + "syscall.AF_VENDOR28": "syscall", + "syscall.AF_VENDOR29": "syscall", + "syscall.AF_VENDOR30": "syscall", + "syscall.AF_VENDOR31": "syscall", + "syscall.AF_VENDOR32": "syscall", + "syscall.AF_VENDOR33": "syscall", + "syscall.AF_VENDOR34": "syscall", + "syscall.AF_VENDOR35": "syscall", + "syscall.AF_VENDOR36": "syscall", + "syscall.AF_VENDOR37": "syscall", + "syscall.AF_VENDOR38": "syscall", + "syscall.AF_VENDOR39": "syscall", + "syscall.AF_VENDOR40": "syscall", + "syscall.AF_VENDOR41": "syscall", + "syscall.AF_VENDOR42": "syscall", + "syscall.AF_VENDOR43": "syscall", + "syscall.AF_VENDOR44": "syscall", + "syscall.AF_VENDOR45": "syscall", + "syscall.AF_VENDOR46": "syscall", + "syscall.AF_VENDOR47": "syscall", + "syscall.AF_WANPIPE": "syscall", + "syscall.AF_X25": "syscall", + "syscall.AI_CANONNAME": "syscall", + "syscall.AI_NUMERICHOST": "syscall", + "syscall.AI_PASSIVE": "syscall", + "syscall.APPLICATION_ERROR": "syscall", + "syscall.ARPHRD_ADAPT": "syscall", + "syscall.ARPHRD_APPLETLK": "syscall", + "syscall.ARPHRD_ARCNET": "syscall", + "syscall.ARPHRD_ASH": "syscall", + "syscall.ARPHRD_ATM": "syscall", + "syscall.ARPHRD_AX25": "syscall", + "syscall.ARPHRD_BIF": "syscall", + "syscall.ARPHRD_CHAOS": "syscall", + "syscall.ARPHRD_CISCO": "syscall", + "syscall.ARPHRD_CSLIP": "syscall", + "syscall.ARPHRD_CSLIP6": "syscall", + "syscall.ARPHRD_DDCMP": "syscall", + "syscall.ARPHRD_DLCI": "syscall", + "syscall.ARPHRD_ECONET": "syscall", + "syscall.ARPHRD_EETHER": "syscall", + "syscall.ARPHRD_ETHER": "syscall", + "syscall.ARPHRD_EUI64": "syscall", + "syscall.ARPHRD_FCAL": "syscall", + "syscall.ARPHRD_FCFABRIC": "syscall", + "syscall.ARPHRD_FCPL": "syscall", + "syscall.ARPHRD_FCPP": "syscall", + "syscall.ARPHRD_FDDI": "syscall", + "syscall.ARPHRD_FRAD": "syscall", + "syscall.ARPHRD_FRELAY": "syscall", + "syscall.ARPHRD_HDLC": "syscall", + "syscall.ARPHRD_HIPPI": "syscall", + "syscall.ARPHRD_HWX25": "syscall", + "syscall.ARPHRD_IEEE1394": "syscall", + "syscall.ARPHRD_IEEE802": "syscall", + "syscall.ARPHRD_IEEE80211": "syscall", + "syscall.ARPHRD_IEEE80211_PRISM": "syscall", + "syscall.ARPHRD_IEEE80211_RADIOTAP": "syscall", + "syscall.ARPHRD_IEEE802154": "syscall", + "syscall.ARPHRD_IEEE802154_PHY": "syscall", + "syscall.ARPHRD_IEEE802_TR": "syscall", + "syscall.ARPHRD_INFINIBAND": "syscall", + "syscall.ARPHRD_IPDDP": "syscall", + "syscall.ARPHRD_IPGRE": "syscall", + "syscall.ARPHRD_IRDA": "syscall", + "syscall.ARPHRD_LAPB": "syscall", + "syscall.ARPHRD_LOCALTLK": "syscall", + "syscall.ARPHRD_LOOPBACK": "syscall", + "syscall.ARPHRD_METRICOM": "syscall", + "syscall.ARPHRD_NETROM": "syscall", + "syscall.ARPHRD_NONE": "syscall", + "syscall.ARPHRD_PIMREG": "syscall", + "syscall.ARPHRD_PPP": "syscall", + "syscall.ARPHRD_PRONET": "syscall", + "syscall.ARPHRD_RAWHDLC": "syscall", + "syscall.ARPHRD_ROSE": "syscall", + "syscall.ARPHRD_RSRVD": "syscall", + "syscall.ARPHRD_SIT": "syscall", + "syscall.ARPHRD_SKIP": "syscall", + "syscall.ARPHRD_SLIP": "syscall", + "syscall.ARPHRD_SLIP6": "syscall", + "syscall.ARPHRD_STRIP": "syscall", + "syscall.ARPHRD_TUNNEL": "syscall", + "syscall.ARPHRD_TUNNEL6": "syscall", + "syscall.ARPHRD_VOID": "syscall", + "syscall.ARPHRD_X25": "syscall", + "syscall.AUTHTYPE_CLIENT": "syscall", + "syscall.AUTHTYPE_SERVER": "syscall", + "syscall.Accept": "syscall", + "syscall.Accept4": "syscall", + "syscall.AcceptEx": "syscall", + "syscall.Access": "syscall", + "syscall.Acct": "syscall", + "syscall.AddrinfoW": "syscall", + "syscall.Adjtime": "syscall", + "syscall.Adjtimex": "syscall", + "syscall.AttachLsf": "syscall", + "syscall.B0": "syscall", + "syscall.B1000000": "syscall", + "syscall.B110": "syscall", + "syscall.B115200": "syscall", + "syscall.B1152000": "syscall", + "syscall.B1200": "syscall", + "syscall.B134": "syscall", + "syscall.B14400": "syscall", + "syscall.B150": "syscall", + "syscall.B1500000": "syscall", + "syscall.B1800": "syscall", + "syscall.B19200": "syscall", + "syscall.B200": "syscall", + "syscall.B2000000": "syscall", + "syscall.B230400": "syscall", + "syscall.B2400": "syscall", + "syscall.B2500000": "syscall", + "syscall.B28800": "syscall", + "syscall.B300": "syscall", + "syscall.B3000000": "syscall", + "syscall.B3500000": "syscall", + "syscall.B38400": "syscall", + "syscall.B4000000": "syscall", + "syscall.B460800": "syscall", + "syscall.B4800": "syscall", + "syscall.B50": "syscall", + "syscall.B500000": "syscall", + "syscall.B57600": "syscall", + "syscall.B576000": "syscall", + "syscall.B600": "syscall", + "syscall.B7200": "syscall", + "syscall.B75": "syscall", + "syscall.B76800": "syscall", + "syscall.B921600": "syscall", + "syscall.B9600": "syscall", + "syscall.BASE_PROTOCOL": "syscall", + "syscall.BIOCFEEDBACK": "syscall", + "syscall.BIOCFLUSH": "syscall", + "syscall.BIOCGBLEN": "syscall", + "syscall.BIOCGDIRECTION": "syscall", + "syscall.BIOCGDIRFILT": "syscall", + "syscall.BIOCGDLT": "syscall", + "syscall.BIOCGDLTLIST": "syscall", + "syscall.BIOCGETBUFMODE": "syscall", + "syscall.BIOCGETIF": "syscall", + "syscall.BIOCGETZMAX": "syscall", + "syscall.BIOCGFEEDBACK": "syscall", + "syscall.BIOCGFILDROP": "syscall", + "syscall.BIOCGHDRCMPLT": "syscall", + "syscall.BIOCGRSIG": "syscall", + "syscall.BIOCGRTIMEOUT": "syscall", + "syscall.BIOCGSEESENT": "syscall", + "syscall.BIOCGSTATS": "syscall", + "syscall.BIOCGSTATSOLD": "syscall", + "syscall.BIOCGTSTAMP": "syscall", + "syscall.BIOCIMMEDIATE": "syscall", + "syscall.BIOCLOCK": "syscall", + "syscall.BIOCPROMISC": "syscall", + "syscall.BIOCROTZBUF": "syscall", + "syscall.BIOCSBLEN": "syscall", + "syscall.BIOCSDIRECTION": "syscall", + "syscall.BIOCSDIRFILT": "syscall", + "syscall.BIOCSDLT": "syscall", + "syscall.BIOCSETBUFMODE": "syscall", + "syscall.BIOCSETF": "syscall", + "syscall.BIOCSETFNR": "syscall", + "syscall.BIOCSETIF": "syscall", + "syscall.BIOCSETWF": "syscall", + "syscall.BIOCSETZBUF": "syscall", + "syscall.BIOCSFEEDBACK": "syscall", + "syscall.BIOCSFILDROP": "syscall", + "syscall.BIOCSHDRCMPLT": "syscall", + "syscall.BIOCSRSIG": "syscall", + "syscall.BIOCSRTIMEOUT": "syscall", + "syscall.BIOCSSEESENT": "syscall", + "syscall.BIOCSTCPF": "syscall", + "syscall.BIOCSTSTAMP": "syscall", + "syscall.BIOCSUDPF": "syscall", + "syscall.BIOCVERSION": "syscall", + "syscall.BPF_A": "syscall", + "syscall.BPF_ABS": "syscall", + "syscall.BPF_ADD": "syscall", + "syscall.BPF_ALIGNMENT": "syscall", + "syscall.BPF_ALIGNMENT32": "syscall", + "syscall.BPF_ALU": "syscall", + "syscall.BPF_AND": "syscall", + "syscall.BPF_B": "syscall", + "syscall.BPF_BUFMODE_BUFFER": "syscall", + "syscall.BPF_BUFMODE_ZBUF": "syscall", + "syscall.BPF_DFLTBUFSIZE": "syscall", + "syscall.BPF_DIRECTION_IN": "syscall", + "syscall.BPF_DIRECTION_OUT": "syscall", + "syscall.BPF_DIV": "syscall", + "syscall.BPF_H": "syscall", + "syscall.BPF_IMM": "syscall", + "syscall.BPF_IND": "syscall", + "syscall.BPF_JA": "syscall", + "syscall.BPF_JEQ": "syscall", + "syscall.BPF_JGE": "syscall", + "syscall.BPF_JGT": "syscall", + "syscall.BPF_JMP": "syscall", + "syscall.BPF_JSET": "syscall", + "syscall.BPF_K": "syscall", + "syscall.BPF_LD": "syscall", + "syscall.BPF_LDX": "syscall", + "syscall.BPF_LEN": "syscall", + "syscall.BPF_LSH": "syscall", + "syscall.BPF_MAJOR_VERSION": "syscall", + "syscall.BPF_MAXBUFSIZE": "syscall", + "syscall.BPF_MAXINSNS": "syscall", + "syscall.BPF_MEM": "syscall", + "syscall.BPF_MEMWORDS": "syscall", + "syscall.BPF_MINBUFSIZE": "syscall", + "syscall.BPF_MINOR_VERSION": "syscall", + "syscall.BPF_MISC": "syscall", + "syscall.BPF_MSH": "syscall", + "syscall.BPF_MUL": "syscall", + "syscall.BPF_NEG": "syscall", + "syscall.BPF_OR": "syscall", + "syscall.BPF_RELEASE": "syscall", + "syscall.BPF_RET": "syscall", + "syscall.BPF_RSH": "syscall", + "syscall.BPF_ST": "syscall", + "syscall.BPF_STX": "syscall", + "syscall.BPF_SUB": "syscall", + "syscall.BPF_TAX": "syscall", + "syscall.BPF_TXA": "syscall", + "syscall.BPF_T_BINTIME": "syscall", + "syscall.BPF_T_BINTIME_FAST": "syscall", + "syscall.BPF_T_BINTIME_MONOTONIC": "syscall", + "syscall.BPF_T_BINTIME_MONOTONIC_FAST": "syscall", + "syscall.BPF_T_FAST": "syscall", + "syscall.BPF_T_FLAG_MASK": "syscall", + "syscall.BPF_T_FORMAT_MASK": "syscall", + "syscall.BPF_T_MICROTIME": "syscall", + "syscall.BPF_T_MICROTIME_FAST": "syscall", + "syscall.BPF_T_MICROTIME_MONOTONIC": "syscall", + "syscall.BPF_T_MICROTIME_MONOTONIC_FAST": "syscall", + "syscall.BPF_T_MONOTONIC": "syscall", + "syscall.BPF_T_MONOTONIC_FAST": "syscall", + "syscall.BPF_T_NANOTIME": "syscall", + "syscall.BPF_T_NANOTIME_FAST": "syscall", + "syscall.BPF_T_NANOTIME_MONOTONIC": "syscall", + "syscall.BPF_T_NANOTIME_MONOTONIC_FAST": "syscall", + "syscall.BPF_T_NONE": "syscall", + "syscall.BPF_T_NORMAL": "syscall", + "syscall.BPF_W": "syscall", + "syscall.BPF_X": "syscall", + "syscall.BRKINT": "syscall", + "syscall.Bind": "syscall", + "syscall.BindToDevice": "syscall", + "syscall.BpfBuflen": "syscall", + "syscall.BpfDatalink": "syscall", + "syscall.BpfHdr": "syscall", + "syscall.BpfHeadercmpl": "syscall", + "syscall.BpfInsn": "syscall", + "syscall.BpfInterface": "syscall", + "syscall.BpfJump": "syscall", + "syscall.BpfProgram": "syscall", + "syscall.BpfStat": "syscall", + "syscall.BpfStats": "syscall", + "syscall.BpfStmt": "syscall", + "syscall.BpfTimeout": "syscall", + "syscall.BpfTimeval": "syscall", + "syscall.BpfVersion": "syscall", + "syscall.BpfZbuf": "syscall", + "syscall.BpfZbufHeader": "syscall", + "syscall.ByHandleFileInformation": "syscall", + "syscall.BytePtrFromString": "syscall", + "syscall.ByteSliceFromString": "syscall", + "syscall.CCR0_FLUSH": "syscall", + "syscall.CERT_CHAIN_POLICY_AUTHENTICODE": "syscall", + "syscall.CERT_CHAIN_POLICY_AUTHENTICODE_TS": "syscall", + "syscall.CERT_CHAIN_POLICY_BASE": "syscall", + "syscall.CERT_CHAIN_POLICY_BASIC_CONSTRAINTS": "syscall", + "syscall.CERT_CHAIN_POLICY_EV": "syscall", + "syscall.CERT_CHAIN_POLICY_MICROSOFT_ROOT": "syscall", + "syscall.CERT_CHAIN_POLICY_NT_AUTH": "syscall", + "syscall.CERT_CHAIN_POLICY_SSL": "syscall", + "syscall.CERT_E_CN_NO_MATCH": "syscall", + "syscall.CERT_E_EXPIRED": "syscall", + "syscall.CERT_E_PURPOSE": "syscall", + "syscall.CERT_E_ROLE": "syscall", + "syscall.CERT_E_UNTRUSTEDROOT": "syscall", + "syscall.CERT_STORE_ADD_ALWAYS": "syscall", + "syscall.CERT_STORE_DEFER_CLOSE_UNTIL_LAST_FREE_FLAG": "syscall", + "syscall.CERT_STORE_PROV_MEMORY": "syscall", + "syscall.CERT_TRUST_HAS_EXCLUDED_NAME_CONSTRAINT": "syscall", + "syscall.CERT_TRUST_HAS_NOT_DEFINED_NAME_CONSTRAINT": "syscall", + "syscall.CERT_TRUST_HAS_NOT_PERMITTED_NAME_CONSTRAINT": "syscall", + "syscall.CERT_TRUST_HAS_NOT_SUPPORTED_CRITICAL_EXT": "syscall", + "syscall.CERT_TRUST_HAS_NOT_SUPPORTED_NAME_CONSTRAINT": "syscall", + "syscall.CERT_TRUST_INVALID_BASIC_CONSTRAINTS": "syscall", + "syscall.CERT_TRUST_INVALID_EXTENSION": "syscall", + "syscall.CERT_TRUST_INVALID_NAME_CONSTRAINTS": "syscall", + "syscall.CERT_TRUST_INVALID_POLICY_CONSTRAINTS": "syscall", + "syscall.CERT_TRUST_IS_CYCLIC": "syscall", + "syscall.CERT_TRUST_IS_EXPLICIT_DISTRUST": "syscall", + "syscall.CERT_TRUST_IS_NOT_SIGNATURE_VALID": "syscall", + "syscall.CERT_TRUST_IS_NOT_TIME_VALID": "syscall", + "syscall.CERT_TRUST_IS_NOT_VALID_FOR_USAGE": "syscall", + "syscall.CERT_TRUST_IS_OFFLINE_REVOCATION": "syscall", + "syscall.CERT_TRUST_IS_REVOKED": "syscall", + "syscall.CERT_TRUST_IS_UNTRUSTED_ROOT": "syscall", + "syscall.CERT_TRUST_NO_ERROR": "syscall", + "syscall.CERT_TRUST_NO_ISSUANCE_CHAIN_POLICY": "syscall", + "syscall.CERT_TRUST_REVOCATION_STATUS_UNKNOWN": "syscall", + "syscall.CFLUSH": "syscall", + "syscall.CLOCAL": "syscall", + "syscall.CLONE_CHILD_CLEARTID": "syscall", + "syscall.CLONE_CHILD_SETTID": "syscall", + "syscall.CLONE_DETACHED": "syscall", + "syscall.CLONE_FILES": "syscall", + "syscall.CLONE_FS": "syscall", + "syscall.CLONE_IO": "syscall", + "syscall.CLONE_NEWIPC": "syscall", + "syscall.CLONE_NEWNET": "syscall", + "syscall.CLONE_NEWNS": "syscall", + "syscall.CLONE_NEWPID": "syscall", + "syscall.CLONE_NEWUSER": "syscall", + "syscall.CLONE_NEWUTS": "syscall", + "syscall.CLONE_PARENT": "syscall", + "syscall.CLONE_PARENT_SETTID": "syscall", + "syscall.CLONE_PTRACE": "syscall", + "syscall.CLONE_SETTLS": "syscall", + "syscall.CLONE_SIGHAND": "syscall", + "syscall.CLONE_SYSVSEM": "syscall", + "syscall.CLONE_THREAD": "syscall", + "syscall.CLONE_UNTRACED": "syscall", + "syscall.CLONE_VFORK": "syscall", + "syscall.CLONE_VM": "syscall", + "syscall.CPUID_CFLUSH": "syscall", + "syscall.CREAD": "syscall", + "syscall.CREATE_ALWAYS": "syscall", + "syscall.CREATE_NEW": "syscall", + "syscall.CREATE_NEW_PROCESS_GROUP": "syscall", + "syscall.CREATE_UNICODE_ENVIRONMENT": "syscall", + "syscall.CRYPT_DEFAULT_CONTAINER_OPTIONAL": "syscall", + "syscall.CRYPT_DELETEKEYSET": "syscall", + "syscall.CRYPT_MACHINE_KEYSET": "syscall", + "syscall.CRYPT_NEWKEYSET": "syscall", + "syscall.CRYPT_SILENT": "syscall", + "syscall.CRYPT_VERIFYCONTEXT": "syscall", + "syscall.CS5": "syscall", + "syscall.CS6": "syscall", + "syscall.CS7": "syscall", + "syscall.CS8": "syscall", + "syscall.CSIZE": "syscall", + "syscall.CSTART": "syscall", + "syscall.CSTATUS": "syscall", + "syscall.CSTOP": "syscall", + "syscall.CSTOPB": "syscall", + "syscall.CSUSP": "syscall", + "syscall.CTL_MAXNAME": "syscall", + "syscall.CTL_NET": "syscall", + "syscall.CTL_QUERY": "syscall", + "syscall.CTRL_BREAK_EVENT": "syscall", + "syscall.CTRL_C_EVENT": "syscall", + "syscall.CancelIo": "syscall", + "syscall.CancelIoEx": "syscall", + "syscall.CertAddCertificateContextToStore": "syscall", + "syscall.CertChainContext": "syscall", + "syscall.CertChainElement": "syscall", + "syscall.CertChainPara": "syscall", + "syscall.CertChainPolicyPara": "syscall", + "syscall.CertChainPolicyStatus": "syscall", + "syscall.CertCloseStore": "syscall", + "syscall.CertContext": "syscall", + "syscall.CertCreateCertificateContext": "syscall", + "syscall.CertEnhKeyUsage": "syscall", + "syscall.CertEnumCertificatesInStore": "syscall", + "syscall.CertFreeCertificateChain": "syscall", + "syscall.CertFreeCertificateContext": "syscall", + "syscall.CertGetCertificateChain": "syscall", + "syscall.CertOpenStore": "syscall", + "syscall.CertOpenSystemStore": "syscall", + "syscall.CertRevocationInfo": "syscall", + "syscall.CertSimpleChain": "syscall", + "syscall.CertTrustStatus": "syscall", + "syscall.CertUsageMatch": "syscall", + "syscall.CertVerifyCertificateChainPolicy": "syscall", + "syscall.Chdir": "syscall", + "syscall.CheckBpfVersion": "syscall", + "syscall.Chflags": "syscall", + "syscall.Chmod": "syscall", + "syscall.Chown": "syscall", + "syscall.Chroot": "syscall", + "syscall.Clearenv": "syscall", + "syscall.Close": "syscall", + "syscall.CloseHandle": "syscall", + "syscall.CloseOnExec": "syscall", + "syscall.Closesocket": "syscall", + "syscall.CmsgLen": "syscall", + "syscall.CmsgSpace": "syscall", + "syscall.Cmsghdr": "syscall", + "syscall.CommandLineToArgv": "syscall", + "syscall.ComputerName": "syscall", + "syscall.Connect": "syscall", + "syscall.ConnectEx": "syscall", + "syscall.ConvertSidToStringSid": "syscall", + "syscall.ConvertStringSidToSid": "syscall", + "syscall.CopySid": "syscall", + "syscall.Creat": "syscall", + "syscall.CreateDirectory": "syscall", + "syscall.CreateFile": "syscall", + "syscall.CreateFileMapping": "syscall", + "syscall.CreateIoCompletionPort": "syscall", + "syscall.CreatePipe": "syscall", + "syscall.CreateProcess": "syscall", + "syscall.Credential": "syscall", + "syscall.CryptAcquireContext": "syscall", + "syscall.CryptGenRandom": "syscall", + "syscall.CryptReleaseContext": "syscall", + "syscall.DIOCBSFLUSH": "syscall", + "syscall.DIOCOSFPFLUSH": "syscall", + "syscall.DLL": "syscall", + "syscall.DLLError": "syscall", + "syscall.DLT_A429": "syscall", + "syscall.DLT_A653_ICM": "syscall", + "syscall.DLT_AIRONET_HEADER": "syscall", + "syscall.DLT_AOS": "syscall", + "syscall.DLT_APPLE_IP_OVER_IEEE1394": "syscall", + "syscall.DLT_ARCNET": "syscall", + "syscall.DLT_ARCNET_LINUX": "syscall", + "syscall.DLT_ATM_CLIP": "syscall", + "syscall.DLT_ATM_RFC1483": "syscall", + "syscall.DLT_AURORA": "syscall", + "syscall.DLT_AX25": "syscall", + "syscall.DLT_AX25_KISS": "syscall", + "syscall.DLT_BACNET_MS_TP": "syscall", + "syscall.DLT_BLUETOOTH_HCI_H4": "syscall", + "syscall.DLT_BLUETOOTH_HCI_H4_WITH_PHDR": "syscall", + "syscall.DLT_CAN20B": "syscall", + "syscall.DLT_CAN_SOCKETCAN": "syscall", + "syscall.DLT_CHAOS": "syscall", + "syscall.DLT_CHDLC": "syscall", + "syscall.DLT_CISCO_IOS": "syscall", + "syscall.DLT_C_HDLC": "syscall", + "syscall.DLT_C_HDLC_WITH_DIR": "syscall", + "syscall.DLT_DBUS": "syscall", + "syscall.DLT_DECT": "syscall", + "syscall.DLT_DOCSIS": "syscall", + "syscall.DLT_DVB_CI": "syscall", + "syscall.DLT_ECONET": "syscall", + "syscall.DLT_EN10MB": "syscall", + "syscall.DLT_EN3MB": "syscall", + "syscall.DLT_ENC": "syscall", + "syscall.DLT_ERF": "syscall", + "syscall.DLT_ERF_ETH": "syscall", + "syscall.DLT_ERF_POS": "syscall", + "syscall.DLT_FC_2": "syscall", + "syscall.DLT_FC_2_WITH_FRAME_DELIMS": "syscall", + "syscall.DLT_FDDI": "syscall", + "syscall.DLT_FLEXRAY": "syscall", + "syscall.DLT_FRELAY": "syscall", + "syscall.DLT_FRELAY_WITH_DIR": "syscall", + "syscall.DLT_GCOM_SERIAL": "syscall", + "syscall.DLT_GCOM_T1E1": "syscall", + "syscall.DLT_GPF_F": "syscall", + "syscall.DLT_GPF_T": "syscall", + "syscall.DLT_GPRS_LLC": "syscall", + "syscall.DLT_GSMTAP_ABIS": "syscall", + "syscall.DLT_GSMTAP_UM": "syscall", + "syscall.DLT_HDLC": "syscall", + "syscall.DLT_HHDLC": "syscall", + "syscall.DLT_HIPPI": "syscall", + "syscall.DLT_IBM_SN": "syscall", + "syscall.DLT_IBM_SP": "syscall", + "syscall.DLT_IEEE802": "syscall", + "syscall.DLT_IEEE802_11": "syscall", + "syscall.DLT_IEEE802_11_RADIO": "syscall", + "syscall.DLT_IEEE802_11_RADIO_AVS": "syscall", + "syscall.DLT_IEEE802_15_4": "syscall", + "syscall.DLT_IEEE802_15_4_LINUX": "syscall", + "syscall.DLT_IEEE802_15_4_NOFCS": "syscall", + "syscall.DLT_IEEE802_15_4_NONASK_PHY": "syscall", + "syscall.DLT_IEEE802_16_MAC_CPS": "syscall", + "syscall.DLT_IEEE802_16_MAC_CPS_RADIO": "syscall", + "syscall.DLT_IPFILTER": "syscall", + "syscall.DLT_IPMB": "syscall", + "syscall.DLT_IPMB_LINUX": "syscall", + "syscall.DLT_IPNET": "syscall", + "syscall.DLT_IPOIB": "syscall", + "syscall.DLT_IPV4": "syscall", + "syscall.DLT_IPV6": "syscall", + "syscall.DLT_IP_OVER_FC": "syscall", + "syscall.DLT_JUNIPER_ATM1": "syscall", + "syscall.DLT_JUNIPER_ATM2": "syscall", + "syscall.DLT_JUNIPER_ATM_CEMIC": "syscall", + "syscall.DLT_JUNIPER_CHDLC": "syscall", + "syscall.DLT_JUNIPER_ES": "syscall", + "syscall.DLT_JUNIPER_ETHER": "syscall", + "syscall.DLT_JUNIPER_FIBRECHANNEL": "syscall", + "syscall.DLT_JUNIPER_FRELAY": "syscall", + "syscall.DLT_JUNIPER_GGSN": "syscall", + "syscall.DLT_JUNIPER_ISM": "syscall", + "syscall.DLT_JUNIPER_MFR": "syscall", + "syscall.DLT_JUNIPER_MLFR": "syscall", + "syscall.DLT_JUNIPER_MLPPP": "syscall", + "syscall.DLT_JUNIPER_MONITOR": "syscall", + "syscall.DLT_JUNIPER_PIC_PEER": "syscall", + "syscall.DLT_JUNIPER_PPP": "syscall", + "syscall.DLT_JUNIPER_PPPOE": "syscall", + "syscall.DLT_JUNIPER_PPPOE_ATM": "syscall", + "syscall.DLT_JUNIPER_SERVICES": "syscall", + "syscall.DLT_JUNIPER_SRX_E2E": "syscall", + "syscall.DLT_JUNIPER_ST": "syscall", + "syscall.DLT_JUNIPER_VP": "syscall", + "syscall.DLT_JUNIPER_VS": "syscall", + "syscall.DLT_LAPB_WITH_DIR": "syscall", + "syscall.DLT_LAPD": "syscall", + "syscall.DLT_LIN": "syscall", + "syscall.DLT_LINUX_EVDEV": "syscall", + "syscall.DLT_LINUX_IRDA": "syscall", + "syscall.DLT_LINUX_LAPD": "syscall", + "syscall.DLT_LINUX_PPP_WITHDIRECTION": "syscall", + "syscall.DLT_LINUX_SLL": "syscall", + "syscall.DLT_LOOP": "syscall", + "syscall.DLT_LTALK": "syscall", + "syscall.DLT_MATCHING_MAX": "syscall", + "syscall.DLT_MATCHING_MIN": "syscall", + "syscall.DLT_MFR": "syscall", + "syscall.DLT_MOST": "syscall", + "syscall.DLT_MPEG_2_TS": "syscall", + "syscall.DLT_MPLS": "syscall", + "syscall.DLT_MTP2": "syscall", + "syscall.DLT_MTP2_WITH_PHDR": "syscall", + "syscall.DLT_MTP3": "syscall", + "syscall.DLT_MUX27010": "syscall", + "syscall.DLT_NETANALYZER": "syscall", + "syscall.DLT_NETANALYZER_TRANSPARENT": "syscall", + "syscall.DLT_NFC_LLCP": "syscall", + "syscall.DLT_NFLOG": "syscall", + "syscall.DLT_NG40": "syscall", + "syscall.DLT_NULL": "syscall", + "syscall.DLT_PCI_EXP": "syscall", + "syscall.DLT_PFLOG": "syscall", + "syscall.DLT_PFSYNC": "syscall", + "syscall.DLT_PPI": "syscall", + "syscall.DLT_PPP": "syscall", + "syscall.DLT_PPP_BSDOS": "syscall", + "syscall.DLT_PPP_ETHER": "syscall", + "syscall.DLT_PPP_PPPD": "syscall", + "syscall.DLT_PPP_SERIAL": "syscall", + "syscall.DLT_PPP_WITH_DIR": "syscall", + "syscall.DLT_PPP_WITH_DIRECTION": "syscall", + "syscall.DLT_PRISM_HEADER": "syscall", + "syscall.DLT_PRONET": "syscall", + "syscall.DLT_RAIF1": "syscall", + "syscall.DLT_RAW": "syscall", + "syscall.DLT_RAWAF_MASK": "syscall", + "syscall.DLT_RIO": "syscall", + "syscall.DLT_SCCP": "syscall", + "syscall.DLT_SITA": "syscall", + "syscall.DLT_SLIP": "syscall", + "syscall.DLT_SLIP_BSDOS": "syscall", + "syscall.DLT_STANAG_5066_D_PDU": "syscall", + "syscall.DLT_SUNATM": "syscall", + "syscall.DLT_SYMANTEC_FIREWALL": "syscall", + "syscall.DLT_TZSP": "syscall", + "syscall.DLT_USB": "syscall", + "syscall.DLT_USB_LINUX": "syscall", + "syscall.DLT_USB_LINUX_MMAPPED": "syscall", + "syscall.DLT_USER0": "syscall", + "syscall.DLT_USER1": "syscall", + "syscall.DLT_USER10": "syscall", + "syscall.DLT_USER11": "syscall", + "syscall.DLT_USER12": "syscall", + "syscall.DLT_USER13": "syscall", + "syscall.DLT_USER14": "syscall", + "syscall.DLT_USER15": "syscall", + "syscall.DLT_USER2": "syscall", + "syscall.DLT_USER3": "syscall", + "syscall.DLT_USER4": "syscall", + "syscall.DLT_USER5": "syscall", + "syscall.DLT_USER6": "syscall", + "syscall.DLT_USER7": "syscall", + "syscall.DLT_USER8": "syscall", + "syscall.DLT_USER9": "syscall", + "syscall.DLT_WIHART": "syscall", + "syscall.DLT_X2E_SERIAL": "syscall", + "syscall.DLT_X2E_XORAYA": "syscall", + "syscall.DNSMXData": "syscall", + "syscall.DNSPTRData": "syscall", + "syscall.DNSRecord": "syscall", + "syscall.DNSSRVData": "syscall", + "syscall.DNSTXTData": "syscall", + "syscall.DNS_TYPE_A": "syscall", + "syscall.DNS_TYPE_A6": "syscall", + "syscall.DNS_TYPE_AAAA": "syscall", + "syscall.DNS_TYPE_ADDRS": "syscall", + "syscall.DNS_TYPE_AFSDB": "syscall", + "syscall.DNS_TYPE_ALL": "syscall", + "syscall.DNS_TYPE_ANY": "syscall", + "syscall.DNS_TYPE_ATMA": "syscall", + "syscall.DNS_TYPE_AXFR": "syscall", + "syscall.DNS_TYPE_CERT": "syscall", + "syscall.DNS_TYPE_CNAME": "syscall", + "syscall.DNS_TYPE_DHCID": "syscall", + "syscall.DNS_TYPE_DNAME": "syscall", + "syscall.DNS_TYPE_DNSKEY": "syscall", + "syscall.DNS_TYPE_DS": "syscall", + "syscall.DNS_TYPE_EID": "syscall", + "syscall.DNS_TYPE_GID": "syscall", + "syscall.DNS_TYPE_GPOS": "syscall", + "syscall.DNS_TYPE_HINFO": "syscall", + "syscall.DNS_TYPE_ISDN": "syscall", + "syscall.DNS_TYPE_IXFR": "syscall", + "syscall.DNS_TYPE_KEY": "syscall", + "syscall.DNS_TYPE_KX": "syscall", + "syscall.DNS_TYPE_LOC": "syscall", + "syscall.DNS_TYPE_MAILA": "syscall", + "syscall.DNS_TYPE_MAILB": "syscall", + "syscall.DNS_TYPE_MB": "syscall", + "syscall.DNS_TYPE_MD": "syscall", + "syscall.DNS_TYPE_MF": "syscall", + "syscall.DNS_TYPE_MG": "syscall", + "syscall.DNS_TYPE_MINFO": "syscall", + "syscall.DNS_TYPE_MR": "syscall", + "syscall.DNS_TYPE_MX": "syscall", + "syscall.DNS_TYPE_NAPTR": "syscall", + "syscall.DNS_TYPE_NBSTAT": "syscall", + "syscall.DNS_TYPE_NIMLOC": "syscall", + "syscall.DNS_TYPE_NS": "syscall", + "syscall.DNS_TYPE_NSAP": "syscall", + "syscall.DNS_TYPE_NSAPPTR": "syscall", + "syscall.DNS_TYPE_NSEC": "syscall", + "syscall.DNS_TYPE_NULL": "syscall", + "syscall.DNS_TYPE_NXT": "syscall", + "syscall.DNS_TYPE_OPT": "syscall", + "syscall.DNS_TYPE_PTR": "syscall", + "syscall.DNS_TYPE_PX": "syscall", + "syscall.DNS_TYPE_RP": "syscall", + "syscall.DNS_TYPE_RRSIG": "syscall", + "syscall.DNS_TYPE_RT": "syscall", + "syscall.DNS_TYPE_SIG": "syscall", + "syscall.DNS_TYPE_SINK": "syscall", + "syscall.DNS_TYPE_SOA": "syscall", + "syscall.DNS_TYPE_SRV": "syscall", + "syscall.DNS_TYPE_TEXT": "syscall", + "syscall.DNS_TYPE_TKEY": "syscall", + "syscall.DNS_TYPE_TSIG": "syscall", + "syscall.DNS_TYPE_UID": "syscall", + "syscall.DNS_TYPE_UINFO": "syscall", + "syscall.DNS_TYPE_UNSPEC": "syscall", + "syscall.DNS_TYPE_WINS": "syscall", + "syscall.DNS_TYPE_WINSR": "syscall", + "syscall.DNS_TYPE_WKS": "syscall", + "syscall.DNS_TYPE_X25": "syscall", + "syscall.DT_BLK": "syscall", + "syscall.DT_CHR": "syscall", + "syscall.DT_DIR": "syscall", + "syscall.DT_FIFO": "syscall", + "syscall.DT_LNK": "syscall", + "syscall.DT_REG": "syscall", + "syscall.DT_SOCK": "syscall", + "syscall.DT_UNKNOWN": "syscall", + "syscall.DT_WHT": "syscall", + "syscall.DUPLICATE_CLOSE_SOURCE": "syscall", + "syscall.DUPLICATE_SAME_ACCESS": "syscall", + "syscall.DeleteFile": "syscall", + "syscall.DetachLsf": "syscall", + "syscall.Dirent": "syscall", + "syscall.DnsQuery": "syscall", + "syscall.DnsRecordListFree": "syscall", + "syscall.Dup": "syscall", + "syscall.Dup2": "syscall", + "syscall.Dup3": "syscall", + "syscall.DuplicateHandle": "syscall", + "syscall.E2BIG": "syscall", + "syscall.EACCES": "syscall", + "syscall.EADDRINUSE": "syscall", + "syscall.EADDRNOTAVAIL": "syscall", + "syscall.EADV": "syscall", + "syscall.EAFNOSUPPORT": "syscall", + 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"syscall.GetFileExInfoStandard": "syscall", + "syscall.GetFileExMaxInfoLevel": "syscall", + "syscall.GetFileInformationByHandle": "syscall", + "syscall.GetFileType": "syscall", + "syscall.GetFullPathName": "syscall", + "syscall.GetHostByName": "syscall", + "syscall.GetIfEntry": "syscall", + "syscall.GetLastError": "syscall", + "syscall.GetLengthSid": "syscall", + "syscall.GetLongPathName": "syscall", + "syscall.GetProcAddress": "syscall", + "syscall.GetProcessTimes": "syscall", + "syscall.GetProtoByName": "syscall", + "syscall.GetQueuedCompletionStatus": "syscall", + "syscall.GetServByName": "syscall", + "syscall.GetShortPathName": "syscall", + "syscall.GetStartupInfo": "syscall", + "syscall.GetStdHandle": "syscall", + "syscall.GetSystemTimeAsFileTime": "syscall", + "syscall.GetTempPath": "syscall", + "syscall.GetTimeZoneInformation": "syscall", + "syscall.GetTokenInformation": "syscall", + "syscall.GetUserNameEx": "syscall", + "syscall.GetUserProfileDirectory": "syscall", + 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"syscall.IFT_DVBRCCUPSTREAM": "syscall", + "syscall.IFT_ECONET": "syscall", + "syscall.IFT_ENC": "syscall", + "syscall.IFT_EON": "syscall", + "syscall.IFT_EPLRS": "syscall", + "syscall.IFT_ESCON": "syscall", + "syscall.IFT_ETHER": "syscall", + "syscall.IFT_FAITH": "syscall", + "syscall.IFT_FAST": "syscall", + "syscall.IFT_FASTETHER": "syscall", + "syscall.IFT_FASTETHERFX": "syscall", + "syscall.IFT_FDDI": "syscall", + "syscall.IFT_FIBRECHANNEL": "syscall", + "syscall.IFT_FRAMERELAYINTERCONNECT": "syscall", + "syscall.IFT_FRAMERELAYMPI": "syscall", + "syscall.IFT_FRDLCIENDPT": "syscall", + "syscall.IFT_FRELAY": "syscall", + "syscall.IFT_FRELAYDCE": "syscall", + "syscall.IFT_FRF16MFRBUNDLE": "syscall", + "syscall.IFT_FRFORWARD": "syscall", + "syscall.IFT_G703AT2MB": "syscall", + "syscall.IFT_G703AT64K": "syscall", + "syscall.IFT_GIF": "syscall", + "syscall.IFT_GIGABITETHERNET": "syscall", + "syscall.IFT_GR303IDT": "syscall", + "syscall.IFT_GR303RDT": "syscall", + "syscall.IFT_H323GATEKEEPER": "syscall", + "syscall.IFT_H323PROXY": "syscall", + "syscall.IFT_HDH1822": "syscall", + "syscall.IFT_HDLC": "syscall", + "syscall.IFT_HDSL2": "syscall", + "syscall.IFT_HIPERLAN2": "syscall", + "syscall.IFT_HIPPI": "syscall", + "syscall.IFT_HIPPIINTERFACE": "syscall", + "syscall.IFT_HOSTPAD": "syscall", + "syscall.IFT_HSSI": "syscall", + "syscall.IFT_HY": "syscall", + "syscall.IFT_IBM370PARCHAN": "syscall", + "syscall.IFT_IDSL": "syscall", + "syscall.IFT_IEEE1394": "syscall", + "syscall.IFT_IEEE80211": "syscall", + "syscall.IFT_IEEE80212": "syscall", + "syscall.IFT_IEEE8023ADLAG": "syscall", + "syscall.IFT_IFGSN": "syscall", + "syscall.IFT_IMT": "syscall", + "syscall.IFT_INFINIBAND": "syscall", + "syscall.IFT_INTERLEAVE": "syscall", + "syscall.IFT_IP": "syscall", + "syscall.IFT_IPFORWARD": "syscall", + "syscall.IFT_IPOVERATM": "syscall", + "syscall.IFT_IPOVERCDLC": "syscall", + "syscall.IFT_IPOVERCLAW": "syscall", + "syscall.IFT_IPSWITCH": "syscall", + "syscall.IFT_IPXIP": "syscall", + "syscall.IFT_ISDN": "syscall", + "syscall.IFT_ISDNBASIC": "syscall", + "syscall.IFT_ISDNPRIMARY": "syscall", + "syscall.IFT_ISDNS": "syscall", + "syscall.IFT_ISDNU": "syscall", + "syscall.IFT_ISO88022LLC": "syscall", + "syscall.IFT_ISO88023": "syscall", + "syscall.IFT_ISO88024": "syscall", + "syscall.IFT_ISO88025": "syscall", + "syscall.IFT_ISO88025CRFPINT": "syscall", + "syscall.IFT_ISO88025DTR": "syscall", + "syscall.IFT_ISO88025FIBER": "syscall", + "syscall.IFT_ISO88026": "syscall", + "syscall.IFT_ISUP": "syscall", + "syscall.IFT_L2VLAN": "syscall", + "syscall.IFT_L3IPVLAN": "syscall", + "syscall.IFT_L3IPXVLAN": "syscall", + "syscall.IFT_LAPB": "syscall", + "syscall.IFT_LAPD": "syscall", + "syscall.IFT_LAPF": "syscall", + "syscall.IFT_LINEGROUP": "syscall", + "syscall.IFT_LOCALTALK": "syscall", + "syscall.IFT_LOOP": "syscall", + "syscall.IFT_MEDIAMAILOVERIP": "syscall", + "syscall.IFT_MFSIGLINK": "syscall", + "syscall.IFT_MIOX25": "syscall", + "syscall.IFT_MODEM": "syscall", + "syscall.IFT_MPC": "syscall", + "syscall.IFT_MPLS": "syscall", + "syscall.IFT_MPLSTUNNEL": "syscall", + "syscall.IFT_MSDSL": "syscall", + "syscall.IFT_MVL": "syscall", + "syscall.IFT_MYRINET": "syscall", + "syscall.IFT_NFAS": "syscall", + "syscall.IFT_NSIP": "syscall", + "syscall.IFT_OPTICALCHANNEL": "syscall", + "syscall.IFT_OPTICALTRANSPORT": "syscall", + "syscall.IFT_OTHER": "syscall", + "syscall.IFT_P10": "syscall", + "syscall.IFT_P80": "syscall", + "syscall.IFT_PARA": "syscall", + "syscall.IFT_PDP": "syscall", + "syscall.IFT_PFLOG": "syscall", + "syscall.IFT_PFLOW": "syscall", + "syscall.IFT_PFSYNC": "syscall", + "syscall.IFT_PLC": "syscall", + "syscall.IFT_PON155": "syscall", + "syscall.IFT_PON622": "syscall", + "syscall.IFT_POS": "syscall", + "syscall.IFT_PPP": "syscall", + "syscall.IFT_PPPMULTILINKBUNDLE": "syscall", + "syscall.IFT_PROPATM": "syscall", + "syscall.IFT_PROPBWAP2MP": "syscall", + "syscall.IFT_PROPCNLS": "syscall", + "syscall.IFT_PROPDOCSWIRELESSDOWNSTREAM": "syscall", + "syscall.IFT_PROPDOCSWIRELESSMACLAYER": "syscall", + "syscall.IFT_PROPDOCSWIRELESSUPSTREAM": "syscall", + "syscall.IFT_PROPMUX": "syscall", + "syscall.IFT_PROPVIRTUAL": "syscall", + "syscall.IFT_PROPWIRELESSP2P": "syscall", + "syscall.IFT_PTPSERIAL": "syscall", + "syscall.IFT_PVC": "syscall", + "syscall.IFT_Q2931": "syscall", + "syscall.IFT_QLLC": "syscall", + "syscall.IFT_RADIOMAC": "syscall", + "syscall.IFT_RADSL": "syscall", + "syscall.IFT_REACHDSL": "syscall", + "syscall.IFT_RFC1483": "syscall", + "syscall.IFT_RS232": "syscall", + "syscall.IFT_RSRB": "syscall", + "syscall.IFT_SDLC": "syscall", + "syscall.IFT_SDSL": "syscall", + "syscall.IFT_SHDSL": "syscall", + "syscall.IFT_SIP": "syscall", + "syscall.IFT_SIPSIG": "syscall", + "syscall.IFT_SIPTG": "syscall", + "syscall.IFT_SLIP": "syscall", + "syscall.IFT_SMDSDXI": "syscall", + "syscall.IFT_SMDSICIP": "syscall", + "syscall.IFT_SONET": "syscall", + "syscall.IFT_SONETOVERHEADCHANNEL": "syscall", + "syscall.IFT_SONETPATH": "syscall", + "syscall.IFT_SONETVT": "syscall", + "syscall.IFT_SRP": "syscall", + "syscall.IFT_SS7SIGLINK": "syscall", + "syscall.IFT_STACKTOSTACK": "syscall", + "syscall.IFT_STARLAN": "syscall", + "syscall.IFT_STF": "syscall", + "syscall.IFT_T1": "syscall", + "syscall.IFT_TDLC": "syscall", + "syscall.IFT_TELINK": "syscall", + "syscall.IFT_TERMPAD": "syscall", + "syscall.IFT_TR008": "syscall", + "syscall.IFT_TRANSPHDLC": "syscall", + "syscall.IFT_TUNNEL": "syscall", + "syscall.IFT_ULTRA": "syscall", + "syscall.IFT_USB": "syscall", + "syscall.IFT_V11": "syscall", + "syscall.IFT_V35": "syscall", + "syscall.IFT_V36": "syscall", + "syscall.IFT_V37": "syscall", + "syscall.IFT_VDSL": "syscall", + "syscall.IFT_VIRTUALIPADDRESS": "syscall", + "syscall.IFT_VIRTUALTG": "syscall", + "syscall.IFT_VOICEDID": "syscall", + "syscall.IFT_VOICEEM": "syscall", + "syscall.IFT_VOICEEMFGD": "syscall", + "syscall.IFT_VOICEENCAP": 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"syscall.IN_CLASSA_MAX": "syscall", + "syscall.IN_CLASSA_NET": "syscall", + "syscall.IN_CLASSA_NSHIFT": "syscall", + "syscall.IN_CLASSB_HOST": "syscall", + "syscall.IN_CLASSB_MAX": "syscall", + "syscall.IN_CLASSB_NET": "syscall", + "syscall.IN_CLASSB_NSHIFT": "syscall", + "syscall.IN_CLASSC_HOST": "syscall", + "syscall.IN_CLASSC_NET": "syscall", + "syscall.IN_CLASSC_NSHIFT": "syscall", + "syscall.IN_CLASSD_HOST": "syscall", + "syscall.IN_CLASSD_NET": "syscall", + "syscall.IN_CLASSD_NSHIFT": "syscall", + "syscall.IN_CLOEXEC": "syscall", + "syscall.IN_CLOSE": "syscall", + "syscall.IN_CLOSE_NOWRITE": "syscall", + "syscall.IN_CLOSE_WRITE": "syscall", + "syscall.IN_CREATE": "syscall", + "syscall.IN_DELETE": "syscall", + "syscall.IN_DELETE_SELF": "syscall", + "syscall.IN_DONT_FOLLOW": "syscall", + "syscall.IN_EXCL_UNLINK": "syscall", + "syscall.IN_IGNORED": "syscall", + "syscall.IN_ISDIR": "syscall", + "syscall.IN_LINKLOCALNETNUM": "syscall", + "syscall.IN_LOOPBACKNET": "syscall", + "syscall.IN_MASK_ADD": "syscall", + "syscall.IN_MODIFY": "syscall", + "syscall.IN_MOVE": "syscall", + "syscall.IN_MOVED_FROM": "syscall", + "syscall.IN_MOVED_TO": "syscall", + "syscall.IN_MOVE_SELF": "syscall", + "syscall.IN_NONBLOCK": "syscall", + "syscall.IN_ONESHOT": "syscall", + "syscall.IN_ONLYDIR": "syscall", + "syscall.IN_OPEN": "syscall", + "syscall.IN_Q_OVERFLOW": "syscall", + "syscall.IN_RFC3021_HOST": "syscall", + "syscall.IN_RFC3021_MASK": "syscall", + "syscall.IN_RFC3021_NET": "syscall", + "syscall.IN_RFC3021_NSHIFT": "syscall", + "syscall.IN_UNMOUNT": "syscall", + "syscall.IOC_IN": "syscall", + "syscall.IOC_INOUT": "syscall", + "syscall.IOC_OUT": "syscall", + "syscall.IOC_WS2": "syscall", + "syscall.IPMreq": "syscall", + "syscall.IPMreqn": "syscall", + "syscall.IPPROTO_3PC": "syscall", + "syscall.IPPROTO_ADFS": "syscall", + "syscall.IPPROTO_AH": "syscall", + "syscall.IPPROTO_AHIP": "syscall", + "syscall.IPPROTO_APES": "syscall", + "syscall.IPPROTO_ARGUS": "syscall", + "syscall.IPPROTO_AX25": "syscall", + "syscall.IPPROTO_BHA": "syscall", + "syscall.IPPROTO_BLT": "syscall", + "syscall.IPPROTO_BRSATMON": "syscall", + "syscall.IPPROTO_CARP": "syscall", + "syscall.IPPROTO_CFTP": "syscall", + "syscall.IPPROTO_CHAOS": "syscall", + "syscall.IPPROTO_CMTP": "syscall", + "syscall.IPPROTO_COMP": "syscall", + "syscall.IPPROTO_CPHB": "syscall", + "syscall.IPPROTO_CPNX": "syscall", + "syscall.IPPROTO_DCCP": "syscall", + "syscall.IPPROTO_DDP": "syscall", + "syscall.IPPROTO_DGP": "syscall", + "syscall.IPPROTO_DIVERT": "syscall", + "syscall.IPPROTO_DONE": "syscall", + "syscall.IPPROTO_DSTOPTS": "syscall", + "syscall.IPPROTO_EGP": "syscall", + "syscall.IPPROTO_EMCON": "syscall", + "syscall.IPPROTO_ENCAP": "syscall", + "syscall.IPPROTO_EON": "syscall", + "syscall.IPPROTO_ESP": "syscall", + "syscall.IPPROTO_ETHERIP": "syscall", + "syscall.IPPROTO_FRAGMENT": "syscall", + "syscall.IPPROTO_GGP": "syscall", + "syscall.IPPROTO_GMTP": "syscall", + "syscall.IPPROTO_GRE": "syscall", + "syscall.IPPROTO_HELLO": "syscall", + "syscall.IPPROTO_HMP": "syscall", + "syscall.IPPROTO_HOPOPTS": "syscall", + "syscall.IPPROTO_ICMP": "syscall", + "syscall.IPPROTO_ICMPV6": "syscall", + "syscall.IPPROTO_IDP": "syscall", + "syscall.IPPROTO_IDPR": "syscall", + "syscall.IPPROTO_IDRP": "syscall", + "syscall.IPPROTO_IGMP": "syscall", + "syscall.IPPROTO_IGP": "syscall", + "syscall.IPPROTO_IGRP": "syscall", + "syscall.IPPROTO_IL": "syscall", + "syscall.IPPROTO_INLSP": "syscall", + "syscall.IPPROTO_INP": "syscall", + "syscall.IPPROTO_IP": "syscall", + "syscall.IPPROTO_IPCOMP": "syscall", + "syscall.IPPROTO_IPCV": "syscall", + "syscall.IPPROTO_IPEIP": "syscall", + "syscall.IPPROTO_IPIP": "syscall", + "syscall.IPPROTO_IPPC": "syscall", + "syscall.IPPROTO_IPV4": "syscall", + "syscall.IPPROTO_IPV6": "syscall", + "syscall.IPPROTO_IPV6_ICMP": "syscall", + "syscall.IPPROTO_IRTP": "syscall", + "syscall.IPPROTO_KRYPTOLAN": "syscall", + "syscall.IPPROTO_LARP": "syscall", + "syscall.IPPROTO_LEAF1": "syscall", + "syscall.IPPROTO_LEAF2": "syscall", + "syscall.IPPROTO_MAX": "syscall", + "syscall.IPPROTO_MAXID": "syscall", + "syscall.IPPROTO_MEAS": "syscall", + "syscall.IPPROTO_MH": "syscall", + "syscall.IPPROTO_MHRP": "syscall", + "syscall.IPPROTO_MICP": "syscall", + "syscall.IPPROTO_MOBILE": "syscall", + "syscall.IPPROTO_MPLS": "syscall", + "syscall.IPPROTO_MTP": "syscall", + "syscall.IPPROTO_MUX": "syscall", + "syscall.IPPROTO_ND": "syscall", + "syscall.IPPROTO_NHRP": "syscall", + "syscall.IPPROTO_NONE": "syscall", + "syscall.IPPROTO_NSP": "syscall", + "syscall.IPPROTO_NVPII": "syscall", + "syscall.IPPROTO_OLD_DIVERT": "syscall", + "syscall.IPPROTO_OSPFIGP": "syscall", + "syscall.IPPROTO_PFSYNC": "syscall", + "syscall.IPPROTO_PGM": "syscall", + "syscall.IPPROTO_PIGP": "syscall", + "syscall.IPPROTO_PIM": "syscall", + "syscall.IPPROTO_PRM": "syscall", + "syscall.IPPROTO_PUP": "syscall", + "syscall.IPPROTO_PVP": "syscall", + "syscall.IPPROTO_RAW": "syscall", + "syscall.IPPROTO_RCCMON": "syscall", + "syscall.IPPROTO_RDP": "syscall", + "syscall.IPPROTO_ROUTING": "syscall", + "syscall.IPPROTO_RSVP": "syscall", + "syscall.IPPROTO_RVD": "syscall", + "syscall.IPPROTO_SATEXPAK": "syscall", + "syscall.IPPROTO_SATMON": "syscall", + "syscall.IPPROTO_SCCSP": "syscall", + "syscall.IPPROTO_SCTP": "syscall", + "syscall.IPPROTO_SDRP": "syscall", + "syscall.IPPROTO_SEND": "syscall", + "syscall.IPPROTO_SEP": "syscall", + "syscall.IPPROTO_SKIP": "syscall", + "syscall.IPPROTO_SPACER": "syscall", + "syscall.IPPROTO_SRPC": "syscall", + "syscall.IPPROTO_ST": "syscall", + "syscall.IPPROTO_SVMTP": "syscall", + "syscall.IPPROTO_SWIPE": "syscall", + "syscall.IPPROTO_TCF": "syscall", + "syscall.IPPROTO_TCP": "syscall", + "syscall.IPPROTO_TLSP": "syscall", + "syscall.IPPROTO_TP": "syscall", + "syscall.IPPROTO_TPXX": "syscall", + "syscall.IPPROTO_TRUNK1": "syscall", + "syscall.IPPROTO_TRUNK2": "syscall", + "syscall.IPPROTO_TTP": "syscall", + "syscall.IPPROTO_UDP": "syscall", + "syscall.IPPROTO_UDPLITE": "syscall", + "syscall.IPPROTO_VINES": "syscall", + "syscall.IPPROTO_VISA": "syscall", + "syscall.IPPROTO_VMTP": "syscall", + "syscall.IPPROTO_VRRP": "syscall", + "syscall.IPPROTO_WBEXPAK": "syscall", + "syscall.IPPROTO_WBMON": "syscall", + "syscall.IPPROTO_WSN": "syscall", + "syscall.IPPROTO_XNET": "syscall", + "syscall.IPPROTO_XTP": "syscall", + "syscall.IPV6_2292DSTOPTS": "syscall", + "syscall.IPV6_2292HOPLIMIT": "syscall", + "syscall.IPV6_2292HOPOPTS": "syscall", + "syscall.IPV6_2292NEXTHOP": "syscall", + "syscall.IPV6_2292PKTINFO": "syscall", + "syscall.IPV6_2292PKTOPTIONS": "syscall", + "syscall.IPV6_2292RTHDR": "syscall", + "syscall.IPV6_ADDRFORM": "syscall", + "syscall.IPV6_ADD_MEMBERSHIP": "syscall", + "syscall.IPV6_AUTHHDR": "syscall", + "syscall.IPV6_AUTH_LEVEL": "syscall", + "syscall.IPV6_AUTOFLOWLABEL": "syscall", + "syscall.IPV6_BINDANY": "syscall", + "syscall.IPV6_BINDV6ONLY": "syscall", + "syscall.IPV6_BOUND_IF": "syscall", + "syscall.IPV6_CHECKSUM": "syscall", + "syscall.IPV6_DEFAULT_MULTICAST_HOPS": "syscall", + "syscall.IPV6_DEFAULT_MULTICAST_LOOP": "syscall", + "syscall.IPV6_DEFHLIM": "syscall", + "syscall.IPV6_DONTFRAG": "syscall", + "syscall.IPV6_DROP_MEMBERSHIP": "syscall", + "syscall.IPV6_DSTOPTS": "syscall", + "syscall.IPV6_ESP_NETWORK_LEVEL": "syscall", + "syscall.IPV6_ESP_TRANS_LEVEL": "syscall", + "syscall.IPV6_FAITH": "syscall", + "syscall.IPV6_FLOWINFO_MASK": "syscall", + "syscall.IPV6_FLOWLABEL_MASK": "syscall", + "syscall.IPV6_FRAGTTL": "syscall", + "syscall.IPV6_FW_ADD": "syscall", + "syscall.IPV6_FW_DEL": "syscall", + "syscall.IPV6_FW_FLUSH": "syscall", + "syscall.IPV6_FW_GET": "syscall", + "syscall.IPV6_FW_ZERO": "syscall", + "syscall.IPV6_HLIMDEC": "syscall", + "syscall.IPV6_HOPLIMIT": "syscall", + "syscall.IPV6_HOPOPTS": "syscall", + "syscall.IPV6_IPCOMP_LEVEL": "syscall", + "syscall.IPV6_IPSEC_POLICY": "syscall", + "syscall.IPV6_JOIN_ANYCAST": "syscall", + "syscall.IPV6_JOIN_GROUP": "syscall", + "syscall.IPV6_LEAVE_ANYCAST": "syscall", + "syscall.IPV6_LEAVE_GROUP": "syscall", + "syscall.IPV6_MAXHLIM": "syscall", + "syscall.IPV6_MAXOPTHDR": "syscall", + "syscall.IPV6_MAXPACKET": "syscall", + "syscall.IPV6_MAX_GROUP_SRC_FILTER": "syscall", + "syscall.IPV6_MAX_MEMBERSHIPS": "syscall", + "syscall.IPV6_MAX_SOCK_SRC_FILTER": "syscall", + "syscall.IPV6_MIN_MEMBERSHIPS": "syscall", + "syscall.IPV6_MMTU": "syscall", + "syscall.IPV6_MSFILTER": "syscall", + "syscall.IPV6_MTU": "syscall", + "syscall.IPV6_MTU_DISCOVER": "syscall", + "syscall.IPV6_MULTICAST_HOPS": "syscall", + "syscall.IPV6_MULTICAST_IF": "syscall", + "syscall.IPV6_MULTICAST_LOOP": "syscall", + "syscall.IPV6_NEXTHOP": "syscall", + "syscall.IPV6_OPTIONS": "syscall", + "syscall.IPV6_PATHMTU": "syscall", + "syscall.IPV6_PIPEX": "syscall", + "syscall.IPV6_PKTINFO": "syscall", + "syscall.IPV6_PMTUDISC_DO": "syscall", + "syscall.IPV6_PMTUDISC_DONT": "syscall", + "syscall.IPV6_PMTUDISC_PROBE": "syscall", + "syscall.IPV6_PMTUDISC_WANT": "syscall", + "syscall.IPV6_PORTRANGE": "syscall", + "syscall.IPV6_PORTRANGE_DEFAULT": "syscall", + "syscall.IPV6_PORTRANGE_HIGH": "syscall", + "syscall.IPV6_PORTRANGE_LOW": "syscall", + "syscall.IPV6_PREFER_TEMPADDR": "syscall", + "syscall.IPV6_RECVDSTOPTS": "syscall", + "syscall.IPV6_RECVERR": "syscall", + "syscall.IPV6_RECVHOPLIMIT": "syscall", + "syscall.IPV6_RECVHOPOPTS": "syscall", + "syscall.IPV6_RECVPATHMTU": "syscall", + "syscall.IPV6_RECVPKTINFO": "syscall", + "syscall.IPV6_RECVRTHDR": "syscall", + "syscall.IPV6_RECVTCLASS": "syscall", + "syscall.IPV6_ROUTER_ALERT": "syscall", + "syscall.IPV6_RTABLE": "syscall", + "syscall.IPV6_RTHDR": "syscall", + "syscall.IPV6_RTHDRDSTOPTS": "syscall", + "syscall.IPV6_RTHDR_LOOSE": "syscall", + "syscall.IPV6_RTHDR_STRICT": "syscall", + "syscall.IPV6_RTHDR_TYPE_0": "syscall", + "syscall.IPV6_RXDSTOPTS": "syscall", + "syscall.IPV6_RXHOPOPTS": "syscall", + "syscall.IPV6_SOCKOPT_RESERVED1": "syscall", + "syscall.IPV6_TCLASS": "syscall", + "syscall.IPV6_UNICAST_HOPS": "syscall", + "syscall.IPV6_USE_MIN_MTU": "syscall", + "syscall.IPV6_V6ONLY": "syscall", + "syscall.IPV6_VERSION": "syscall", + "syscall.IPV6_VERSION_MASK": "syscall", + "syscall.IPV6_XFRM_POLICY": "syscall", + "syscall.IP_ADD_MEMBERSHIP": "syscall", + "syscall.IP_ADD_SOURCE_MEMBERSHIP": "syscall", + "syscall.IP_AUTH_LEVEL": "syscall", + "syscall.IP_BINDANY": "syscall", + "syscall.IP_BLOCK_SOURCE": "syscall", + "syscall.IP_BOUND_IF": "syscall", + "syscall.IP_DEFAULT_MULTICAST_LOOP": "syscall", + "syscall.IP_DEFAULT_MULTICAST_TTL": "syscall", + "syscall.IP_DF": "syscall", + "syscall.IP_DONTFRAG": "syscall", + "syscall.IP_DROP_MEMBERSHIP": "syscall", + "syscall.IP_DROP_SOURCE_MEMBERSHIP": "syscall", + "syscall.IP_DUMMYNET3": "syscall", + "syscall.IP_DUMMYNET_CONFIGURE": "syscall", + "syscall.IP_DUMMYNET_DEL": "syscall", + "syscall.IP_DUMMYNET_FLUSH": "syscall", + "syscall.IP_DUMMYNET_GET": "syscall", + "syscall.IP_EF": "syscall", + "syscall.IP_ERRORMTU": "syscall", + "syscall.IP_ESP_NETWORK_LEVEL": "syscall", + "syscall.IP_ESP_TRANS_LEVEL": "syscall", + "syscall.IP_FAITH": "syscall", + "syscall.IP_FREEBIND": "syscall", + "syscall.IP_FW3": "syscall", + "syscall.IP_FW_ADD": "syscall", + "syscall.IP_FW_DEL": "syscall", + "syscall.IP_FW_FLUSH": "syscall", + "syscall.IP_FW_GET": "syscall", + "syscall.IP_FW_NAT_CFG": "syscall", + "syscall.IP_FW_NAT_DEL": "syscall", + "syscall.IP_FW_NAT_GET_CONFIG": "syscall", + "syscall.IP_FW_NAT_GET_LOG": "syscall", + "syscall.IP_FW_RESETLOG": "syscall", + "syscall.IP_FW_TABLE_ADD": "syscall", + "syscall.IP_FW_TABLE_DEL": "syscall", + "syscall.IP_FW_TABLE_FLUSH": "syscall", + "syscall.IP_FW_TABLE_GETSIZE": "syscall", + "syscall.IP_FW_TABLE_LIST": "syscall", + "syscall.IP_FW_ZERO": "syscall", + "syscall.IP_HDRINCL": "syscall", + "syscall.IP_IPCOMP_LEVEL": "syscall", + "syscall.IP_IPSECFLOWINFO": "syscall", + "syscall.IP_IPSEC_LOCAL_AUTH": "syscall", + "syscall.IP_IPSEC_LOCAL_CRED": "syscall", + "syscall.IP_IPSEC_LOCAL_ID": "syscall", + "syscall.IP_IPSEC_POLICY": "syscall", + "syscall.IP_IPSEC_REMOTE_AUTH": "syscall", + "syscall.IP_IPSEC_REMOTE_CRED": "syscall", + "syscall.IP_IPSEC_REMOTE_ID": "syscall", + "syscall.IP_MAXPACKET": "syscall", + "syscall.IP_MAX_GROUP_SRC_FILTER": "syscall", + "syscall.IP_MAX_MEMBERSHIPS": "syscall", + "syscall.IP_MAX_SOCK_MUTE_FILTER": "syscall", + "syscall.IP_MAX_SOCK_SRC_FILTER": "syscall", + "syscall.IP_MAX_SOURCE_FILTER": "syscall", + "syscall.IP_MF": "syscall", + "syscall.IP_MINFRAGSIZE": "syscall", + "syscall.IP_MINTTL": "syscall", + "syscall.IP_MIN_MEMBERSHIPS": "syscall", + "syscall.IP_MSFILTER": "syscall", + "syscall.IP_MSS": "syscall", + "syscall.IP_MTU": "syscall", + "syscall.IP_MTU_DISCOVER": "syscall", + "syscall.IP_MULTICAST_IF": "syscall", + "syscall.IP_MULTICAST_IFINDEX": "syscall", + "syscall.IP_MULTICAST_LOOP": "syscall", + "syscall.IP_MULTICAST_TTL": "syscall", + "syscall.IP_MULTICAST_VIF": "syscall", + "syscall.IP_NAT__XXX": "syscall", + "syscall.IP_OFFMASK": "syscall", + "syscall.IP_OLD_FW_ADD": "syscall", + "syscall.IP_OLD_FW_DEL": "syscall", + "syscall.IP_OLD_FW_FLUSH": "syscall", + "syscall.IP_OLD_FW_GET": "syscall", + "syscall.IP_OLD_FW_RESETLOG": "syscall", + "syscall.IP_OLD_FW_ZERO": "syscall", + "syscall.IP_ONESBCAST": "syscall", + "syscall.IP_OPTIONS": "syscall", + "syscall.IP_ORIGDSTADDR": "syscall", + "syscall.IP_PASSSEC": "syscall", + "syscall.IP_PIPEX": "syscall", + "syscall.IP_PKTINFO": "syscall", + "syscall.IP_PKTOPTIONS": "syscall", + "syscall.IP_PMTUDISC": "syscall", + "syscall.IP_PMTUDISC_DO": "syscall", + "syscall.IP_PMTUDISC_DONT": "syscall", + "syscall.IP_PMTUDISC_PROBE": "syscall", + "syscall.IP_PMTUDISC_WANT": "syscall", + "syscall.IP_PORTRANGE": "syscall", + "syscall.IP_PORTRANGE_DEFAULT": "syscall", + "syscall.IP_PORTRANGE_HIGH": "syscall", + "syscall.IP_PORTRANGE_LOW": "syscall", + "syscall.IP_RECVDSTADDR": "syscall", + "syscall.IP_RECVDSTPORT": "syscall", + "syscall.IP_RECVERR": "syscall", + "syscall.IP_RECVIF": "syscall", + "syscall.IP_RECVOPTS": "syscall", + "syscall.IP_RECVORIGDSTADDR": "syscall", + "syscall.IP_RECVPKTINFO": "syscall", + "syscall.IP_RECVRETOPTS": "syscall", + "syscall.IP_RECVRTABLE": "syscall", + "syscall.IP_RECVTOS": "syscall", + "syscall.IP_RECVTTL": "syscall", + "syscall.IP_RETOPTS": "syscall", + "syscall.IP_RF": "syscall", + "syscall.IP_ROUTER_ALERT": "syscall", + "syscall.IP_RSVP_OFF": "syscall", + "syscall.IP_RSVP_ON": "syscall", + "syscall.IP_RSVP_VIF_OFF": "syscall", + "syscall.IP_RSVP_VIF_ON": "syscall", + "syscall.IP_RTABLE": "syscall", + "syscall.IP_SENDSRCADDR": "syscall", + "syscall.IP_STRIPHDR": "syscall", + "syscall.IP_TOS": "syscall", + "syscall.IP_TRAFFIC_MGT_BACKGROUND": "syscall", + "syscall.IP_TRANSPARENT": "syscall", + "syscall.IP_TTL": "syscall", + "syscall.IP_UNBLOCK_SOURCE": "syscall", + "syscall.IP_XFRM_POLICY": "syscall", + "syscall.IPv6MTUInfo": "syscall", + "syscall.IPv6Mreq": "syscall", + "syscall.ISIG": "syscall", + "syscall.ISTRIP": "syscall", + "syscall.IUCLC": "syscall", + "syscall.IUTF8": "syscall", + "syscall.IXANY": "syscall", + "syscall.IXOFF": "syscall", + "syscall.IXON": "syscall", + "syscall.IfAddrmsg": "syscall", + "syscall.IfAnnounceMsghdr": "syscall", + "syscall.IfData": "syscall", + "syscall.IfInfomsg": "syscall", + "syscall.IfMsghdr": "syscall", + "syscall.IfaMsghdr": "syscall", + "syscall.IfmaMsghdr": "syscall", + "syscall.IfmaMsghdr2": "syscall", + "syscall.ImplementsGetwd": "syscall", + "syscall.Inet4Pktinfo": "syscall", + "syscall.Inet6Pktinfo": "syscall", + "syscall.InotifyAddWatch": "syscall", + "syscall.InotifyEvent": "syscall", + "syscall.InotifyInit": "syscall", + "syscall.InotifyInit1": "syscall", + "syscall.InotifyRmWatch": "syscall", + "syscall.InterfaceAddrMessage": "syscall", + "syscall.InterfaceAnnounceMessage": "syscall", + "syscall.InterfaceInfo": "syscall", + "syscall.InterfaceMessage": "syscall", + "syscall.InterfaceMulticastAddrMessage": "syscall", + "syscall.InvalidHandle": "syscall", + "syscall.Ioperm": "syscall", + "syscall.Iopl": "syscall", + "syscall.Iovec": "syscall", + "syscall.IpAdapterInfo": "syscall", + "syscall.IpAddrString": "syscall", + "syscall.IpAddressString": "syscall", + "syscall.IpMaskString": "syscall", + "syscall.Issetugid": "syscall", + "syscall.KEY_ALL_ACCESS": "syscall", + "syscall.KEY_CREATE_LINK": "syscall", + "syscall.KEY_CREATE_SUB_KEY": "syscall", + "syscall.KEY_ENUMERATE_SUB_KEYS": "syscall", + "syscall.KEY_EXECUTE": "syscall", + "syscall.KEY_NOTIFY": "syscall", + "syscall.KEY_QUERY_VALUE": "syscall", + "syscall.KEY_READ": "syscall", + "syscall.KEY_SET_VALUE": "syscall", + "syscall.KEY_WOW64_32KEY": "syscall", + "syscall.KEY_WOW64_64KEY": "syscall", + "syscall.KEY_WRITE": "syscall", + "syscall.Kevent": "syscall", + "syscall.Kevent_t": "syscall", + "syscall.Kill": "syscall", + "syscall.Klogctl": "syscall", + "syscall.Kqueue": "syscall", + "syscall.LANG_ENGLISH": "syscall", + "syscall.LAYERED_PROTOCOL": "syscall", + "syscall.LCNT_OVERLOAD_FLUSH": "syscall", + "syscall.LINUX_REBOOT_CMD_CAD_OFF": "syscall", + "syscall.LINUX_REBOOT_CMD_CAD_ON": "syscall", + "syscall.LINUX_REBOOT_CMD_HALT": "syscall", + "syscall.LINUX_REBOOT_CMD_KEXEC": "syscall", + "syscall.LINUX_REBOOT_CMD_POWER_OFF": "syscall", + "syscall.LINUX_REBOOT_CMD_RESTART": "syscall", + "syscall.LINUX_REBOOT_CMD_RESTART2": "syscall", + "syscall.LINUX_REBOOT_CMD_SW_SUSPEND": "syscall", + "syscall.LINUX_REBOOT_MAGIC1": "syscall", + "syscall.LINUX_REBOOT_MAGIC2": "syscall", + "syscall.LOCK_EX": "syscall", + "syscall.LOCK_NB": "syscall", + "syscall.LOCK_SH": "syscall", + "syscall.LOCK_UN": "syscall", + "syscall.LazyDLL": "syscall", + "syscall.LazyProc": "syscall", + "syscall.Lchown": "syscall", + "syscall.Linger": "syscall", + "syscall.Link": "syscall", + "syscall.Listen": "syscall", + "syscall.Listxattr": "syscall", + "syscall.LoadCancelIoEx": "syscall", + "syscall.LoadConnectEx": "syscall", + "syscall.LoadDLL": "syscall", + "syscall.LoadGetAddrInfo": "syscall", + "syscall.LoadLibrary": "syscall", + "syscall.LoadSetFileCompletionNotificationModes": "syscall", + "syscall.LocalFree": "syscall", + "syscall.Log2phys_t": "syscall", + "syscall.LookupAccountName": "syscall", + "syscall.LookupAccountSid": "syscall", + "syscall.LookupSID": "syscall", + "syscall.LsfJump": "syscall", + "syscall.LsfSocket": "syscall", + "syscall.LsfStmt": "syscall", + "syscall.Lstat": "syscall", + "syscall.MADV_AUTOSYNC": "syscall", + "syscall.MADV_CAN_REUSE": "syscall", + "syscall.MADV_CORE": "syscall", + "syscall.MADV_DOFORK": "syscall", + "syscall.MADV_DONTFORK": "syscall", + "syscall.MADV_DONTNEED": "syscall", + "syscall.MADV_FREE": "syscall", + "syscall.MADV_FREE_REUSABLE": "syscall", + "syscall.MADV_FREE_REUSE": "syscall", + "syscall.MADV_HUGEPAGE": "syscall", + "syscall.MADV_HWPOISON": "syscall", + "syscall.MADV_MERGEABLE": "syscall", + "syscall.MADV_NOCORE": "syscall", + "syscall.MADV_NOHUGEPAGE": "syscall", + "syscall.MADV_NORMAL": "syscall", + "syscall.MADV_NOSYNC": "syscall", + "syscall.MADV_PROTECT": "syscall", + "syscall.MADV_RANDOM": "syscall", + "syscall.MADV_REMOVE": "syscall", + "syscall.MADV_SEQUENTIAL": "syscall", + "syscall.MADV_UNMERGEABLE": "syscall", + "syscall.MADV_WILLNEED": "syscall", + "syscall.MADV_ZERO_WIRED_PAGES": "syscall", + "syscall.MAP_32BIT": "syscall", + "syscall.MAP_ANON": "syscall", + "syscall.MAP_ANONYMOUS": "syscall", + "syscall.MAP_COPY": "syscall", + "syscall.MAP_DENYWRITE": "syscall", + "syscall.MAP_EXECUTABLE": "syscall", + "syscall.MAP_FILE": "syscall", + "syscall.MAP_FIXED": "syscall", + "syscall.MAP_GROWSDOWN": "syscall", + "syscall.MAP_HASSEMAPHORE": "syscall", + "syscall.MAP_HUGETLB": "syscall", + "syscall.MAP_JIT": "syscall", + "syscall.MAP_LOCKED": "syscall", + "syscall.MAP_NOCACHE": "syscall", + "syscall.MAP_NOCORE": "syscall", + "syscall.MAP_NOEXTEND": "syscall", + "syscall.MAP_NONBLOCK": "syscall", + "syscall.MAP_NORESERVE": "syscall", + "syscall.MAP_NOSYNC": "syscall", + "syscall.MAP_POPULATE": "syscall", + "syscall.MAP_PREFAULT_READ": "syscall", + "syscall.MAP_PRIVATE": "syscall", + "syscall.MAP_RENAME": "syscall", + "syscall.MAP_RESERVED0080": "syscall", + "syscall.MAP_RESERVED0100": "syscall", + "syscall.MAP_SHARED": "syscall", + "syscall.MAP_STACK": "syscall", + "syscall.MAP_TYPE": "syscall", + "syscall.MAXLEN_IFDESCR": "syscall", + "syscall.MAXLEN_PHYSADDR": "syscall", + "syscall.MAX_ADAPTER_ADDRESS_LENGTH": "syscall", + "syscall.MAX_ADAPTER_DESCRIPTION_LENGTH": "syscall", + "syscall.MAX_ADAPTER_NAME_LENGTH": "syscall", + "syscall.MAX_COMPUTERNAME_LENGTH": "syscall", + "syscall.MAX_INTERFACE_NAME_LEN": "syscall", + "syscall.MAX_LONG_PATH": "syscall", + "syscall.MAX_PATH": "syscall", + "syscall.MAX_PROTOCOL_CHAIN": "syscall", + "syscall.MCL_CURRENT": "syscall", + "syscall.MCL_FUTURE": "syscall", + "syscall.MNT_DETACH": "syscall", + "syscall.MNT_EXPIRE": "syscall", + "syscall.MNT_FORCE": "syscall", + "syscall.MSG_BCAST": "syscall", + "syscall.MSG_CMSG_CLOEXEC": "syscall", + "syscall.MSG_COMPAT": "syscall", + "syscall.MSG_CONFIRM": "syscall", + "syscall.MSG_CONTROLMBUF": "syscall", + "syscall.MSG_CTRUNC": "syscall", + "syscall.MSG_DONTROUTE": "syscall", + "syscall.MSG_DONTWAIT": "syscall", + "syscall.MSG_EOF": "syscall", + "syscall.MSG_EOR": "syscall", + "syscall.MSG_ERRQUEUE": "syscall", + "syscall.MSG_FASTOPEN": "syscall", + "syscall.MSG_FIN": "syscall", + "syscall.MSG_FLUSH": "syscall", + "syscall.MSG_HAVEMORE": "syscall", + "syscall.MSG_HOLD": "syscall", + "syscall.MSG_IOVUSRSPACE": "syscall", + "syscall.MSG_LENUSRSPACE": "syscall", + "syscall.MSG_MCAST": "syscall", + "syscall.MSG_MORE": "syscall", + "syscall.MSG_NAMEMBUF": "syscall", + "syscall.MSG_NBIO": "syscall", + "syscall.MSG_NEEDSA": "syscall", + "syscall.MSG_NOSIGNAL": "syscall", + "syscall.MSG_NOTIFICATION": "syscall", + "syscall.MSG_OOB": "syscall", + "syscall.MSG_PEEK": "syscall", + "syscall.MSG_PROXY": "syscall", + "syscall.MSG_RCVMORE": "syscall", + "syscall.MSG_RST": "syscall", + "syscall.MSG_SEND": "syscall", + "syscall.MSG_SYN": "syscall", + "syscall.MSG_TRUNC": "syscall", + "syscall.MSG_TRYHARD": "syscall", + "syscall.MSG_USERFLAGS": "syscall", + "syscall.MSG_WAITALL": "syscall", + "syscall.MSG_WAITFORONE": "syscall", + "syscall.MSG_WAITSTREAM": "syscall", + "syscall.MS_ACTIVE": "syscall", + "syscall.MS_ASYNC": "syscall", + "syscall.MS_BIND": "syscall", + "syscall.MS_DEACTIVATE": "syscall", + "syscall.MS_DIRSYNC": "syscall", + "syscall.MS_INVALIDATE": "syscall", + "syscall.MS_I_VERSION": "syscall", + "syscall.MS_KERNMOUNT": "syscall", + "syscall.MS_KILLPAGES": "syscall", + "syscall.MS_MANDLOCK": "syscall", + "syscall.MS_MGC_MSK": "syscall", + "syscall.MS_MGC_VAL": "syscall", + "syscall.MS_MOVE": "syscall", + "syscall.MS_NOATIME": "syscall", + "syscall.MS_NODEV": "syscall", + "syscall.MS_NODIRATIME": "syscall", + "syscall.MS_NOEXEC": "syscall", + "syscall.MS_NOSUID": "syscall", + "syscall.MS_NOUSER": "syscall", + "syscall.MS_POSIXACL": "syscall", + "syscall.MS_PRIVATE": "syscall", + "syscall.MS_RDONLY": "syscall", + "syscall.MS_REC": "syscall", + "syscall.MS_RELATIME": "syscall", + "syscall.MS_REMOUNT": "syscall", + "syscall.MS_RMT_MASK": "syscall", + "syscall.MS_SHARED": "syscall", + "syscall.MS_SILENT": "syscall", + "syscall.MS_SLAVE": "syscall", + "syscall.MS_STRICTATIME": "syscall", + "syscall.MS_SYNC": "syscall", + "syscall.MS_SYNCHRONOUS": "syscall", + "syscall.MS_UNBINDABLE": "syscall", + "syscall.Madvise": "syscall", + "syscall.MapViewOfFile": "syscall", + "syscall.MaxTokenInfoClass": "syscall", + "syscall.Mclpool": "syscall", + "syscall.MibIfRow": "syscall", + "syscall.Mkdir": "syscall", + "syscall.Mkdirat": "syscall", + "syscall.Mkfifo": "syscall", + "syscall.Mknod": "syscall", + "syscall.Mknodat": "syscall", + "syscall.Mlock": "syscall", + "syscall.Mlockall": "syscall", + "syscall.Mmap": "syscall", + "syscall.Mount": 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"syscall.NETLINK_PKTINFO": "syscall", + "syscall.NETLINK_RDMA": "syscall", + "syscall.NETLINK_ROUTE": "syscall", + "syscall.NETLINK_SCSITRANSPORT": "syscall", + "syscall.NETLINK_SELINUX": "syscall", + "syscall.NETLINK_UNUSED": "syscall", + "syscall.NETLINK_USERSOCK": "syscall", + "syscall.NETLINK_XFRM": "syscall", + "syscall.NET_RT_DUMP": "syscall", + "syscall.NET_RT_DUMP2": "syscall", + "syscall.NET_RT_FLAGS": "syscall", + "syscall.NET_RT_IFLIST": "syscall", + "syscall.NET_RT_IFLIST2": "syscall", + "syscall.NET_RT_IFLISTL": "syscall", + "syscall.NET_RT_IFMALIST": "syscall", + "syscall.NET_RT_MAXID": "syscall", + "syscall.NET_RT_OIFLIST": "syscall", + "syscall.NET_RT_OOIFLIST": "syscall", + "syscall.NET_RT_STAT": "syscall", + "syscall.NET_RT_STATS": "syscall", + "syscall.NET_RT_TABLE": "syscall", + "syscall.NET_RT_TRASH": "syscall", + "syscall.NLA_ALIGNTO": "syscall", + "syscall.NLA_F_NESTED": "syscall", + "syscall.NLA_F_NET_BYTEORDER": "syscall", + "syscall.NLA_HDRLEN": "syscall", + "syscall.NLMSG_ALIGNTO": "syscall", + "syscall.NLMSG_DONE": "syscall", + "syscall.NLMSG_ERROR": "syscall", + "syscall.NLMSG_HDRLEN": "syscall", + "syscall.NLMSG_MIN_TYPE": "syscall", + "syscall.NLMSG_NOOP": "syscall", + "syscall.NLMSG_OVERRUN": "syscall", + "syscall.NLM_F_ACK": "syscall", + "syscall.NLM_F_APPEND": "syscall", + "syscall.NLM_F_ATOMIC": "syscall", + "syscall.NLM_F_CREATE": "syscall", + "syscall.NLM_F_DUMP": "syscall", + "syscall.NLM_F_ECHO": "syscall", + "syscall.NLM_F_EXCL": "syscall", + "syscall.NLM_F_MATCH": "syscall", + "syscall.NLM_F_MULTI": "syscall", + "syscall.NLM_F_REPLACE": "syscall", + "syscall.NLM_F_REQUEST": "syscall", + "syscall.NLM_F_ROOT": "syscall", + "syscall.NOFLSH": "syscall", + "syscall.NOTE_ABSOLUTE": "syscall", + "syscall.NOTE_ATTRIB": "syscall", + "syscall.NOTE_CHILD": "syscall", + "syscall.NOTE_DELETE": "syscall", + "syscall.NOTE_EOF": "syscall", + "syscall.NOTE_EXEC": "syscall", + "syscall.NOTE_EXIT": "syscall", + "syscall.NOTE_EXITSTATUS": 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"syscall.O_APPEND": "syscall", + "syscall.O_ASYNC": "syscall", + "syscall.O_CLOEXEC": "syscall", + "syscall.O_CREAT": "syscall", + "syscall.O_DIRECT": "syscall", + "syscall.O_DIRECTORY": "syscall", + "syscall.O_DSYNC": "syscall", + "syscall.O_EVTONLY": "syscall", + "syscall.O_EXCL": "syscall", + "syscall.O_EXEC": "syscall", + "syscall.O_EXLOCK": "syscall", + "syscall.O_FSYNC": "syscall", + "syscall.O_LARGEFILE": "syscall", + "syscall.O_NDELAY": "syscall", + "syscall.O_NOATIME": "syscall", + "syscall.O_NOCTTY": "syscall", + "syscall.O_NOFOLLOW": "syscall", + "syscall.O_NONBLOCK": "syscall", + "syscall.O_NOSIGPIPE": "syscall", + "syscall.O_POPUP": "syscall", + "syscall.O_RDONLY": "syscall", + "syscall.O_RDWR": "syscall", + "syscall.O_RSYNC": "syscall", + "syscall.O_SHLOCK": "syscall", + "syscall.O_SYMLINK": "syscall", + "syscall.O_SYNC": "syscall", + "syscall.O_TRUNC": "syscall", + "syscall.O_TTY_INIT": "syscall", + "syscall.O_WRONLY": "syscall", + "syscall.Open": "syscall", + "syscall.OpenCurrentProcessToken": "syscall", + "syscall.OpenProcess": "syscall", + "syscall.OpenProcessToken": "syscall", + "syscall.Openat": "syscall", + "syscall.Overlapped": "syscall", + "syscall.PACKET_ADD_MEMBERSHIP": "syscall", + "syscall.PACKET_BROADCAST": "syscall", + "syscall.PACKET_DROP_MEMBERSHIP": "syscall", + "syscall.PACKET_FASTROUTE": "syscall", + "syscall.PACKET_HOST": "syscall", + "syscall.PACKET_LOOPBACK": "syscall", + "syscall.PACKET_MR_ALLMULTI": "syscall", + "syscall.PACKET_MR_MULTICAST": "syscall", + "syscall.PACKET_MR_PROMISC": "syscall", + "syscall.PACKET_MULTICAST": "syscall", + "syscall.PACKET_OTHERHOST": "syscall", + "syscall.PACKET_OUTGOING": "syscall", + "syscall.PACKET_RECV_OUTPUT": "syscall", + "syscall.PACKET_RX_RING": "syscall", + "syscall.PACKET_STATISTICS": "syscall", + "syscall.PAGE_EXECUTE_READ": "syscall", + "syscall.PAGE_EXECUTE_READWRITE": "syscall", + "syscall.PAGE_EXECUTE_WRITECOPY": "syscall", + "syscall.PAGE_READONLY": "syscall", + 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"syscall.PR_TASK_PERF_EVENTS_DISABLE": "syscall", + "syscall.PR_TASK_PERF_EVENTS_ENABLE": "syscall", + "syscall.PR_TIMING_STATISTICAL": "syscall", + "syscall.PR_TIMING_TIMESTAMP": "syscall", + "syscall.PR_TSC_ENABLE": "syscall", + "syscall.PR_TSC_SIGSEGV": "syscall", + "syscall.PR_UNALIGN_NOPRINT": "syscall", + "syscall.PR_UNALIGN_SIGBUS": "syscall", + "syscall.PTRACE_ARCH_PRCTL": "syscall", + "syscall.PTRACE_ATTACH": "syscall", + "syscall.PTRACE_CONT": "syscall", + "syscall.PTRACE_DETACH": "syscall", + "syscall.PTRACE_EVENT_CLONE": "syscall", + "syscall.PTRACE_EVENT_EXEC": "syscall", + "syscall.PTRACE_EVENT_EXIT": "syscall", + "syscall.PTRACE_EVENT_FORK": "syscall", + "syscall.PTRACE_EVENT_VFORK": "syscall", + "syscall.PTRACE_EVENT_VFORK_DONE": "syscall", + "syscall.PTRACE_GETCRUNCHREGS": "syscall", + "syscall.PTRACE_GETEVENTMSG": "syscall", + "syscall.PTRACE_GETFPREGS": "syscall", + "syscall.PTRACE_GETFPXREGS": "syscall", + "syscall.PTRACE_GETHBPREGS": "syscall", + 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"syscall.RTF_ANNOUNCE": "syscall", + "syscall.RTF_BLACKHOLE": "syscall", + "syscall.RTF_BROADCAST": "syscall", + "syscall.RTF_CACHE": "syscall", + "syscall.RTF_CLONED": "syscall", + "syscall.RTF_CLONING": "syscall", + "syscall.RTF_CONDEMNED": "syscall", + "syscall.RTF_DEFAULT": "syscall", + "syscall.RTF_DELCLONE": "syscall", + "syscall.RTF_DONE": "syscall", + "syscall.RTF_DYNAMIC": "syscall", + "syscall.RTF_FLOW": "syscall", + "syscall.RTF_FMASK": "syscall", + "syscall.RTF_GATEWAY": "syscall", + "syscall.RTF_HOST": "syscall", + "syscall.RTF_IFREF": "syscall", + "syscall.RTF_IFSCOPE": "syscall", + "syscall.RTF_INTERFACE": "syscall", + "syscall.RTF_IRTT": "syscall", + "syscall.RTF_LINKRT": "syscall", + "syscall.RTF_LLDATA": "syscall", + "syscall.RTF_LLINFO": "syscall", + "syscall.RTF_LOCAL": "syscall", + "syscall.RTF_MASK": "syscall", + "syscall.RTF_MODIFIED": "syscall", + "syscall.RTF_MPATH": "syscall", + "syscall.RTF_MPLS": "syscall", + "syscall.RTF_MSS": "syscall", + 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+ "syscall.RTM_BASE": "syscall", + "syscall.RTM_CHANGE": "syscall", + "syscall.RTM_CHGADDR": "syscall", + "syscall.RTM_DELACTION": "syscall", + "syscall.RTM_DELADDR": "syscall", + "syscall.RTM_DELADDRLABEL": "syscall", + "syscall.RTM_DELETE": "syscall", + "syscall.RTM_DELLINK": "syscall", + "syscall.RTM_DELMADDR": "syscall", + "syscall.RTM_DELNEIGH": "syscall", + "syscall.RTM_DELQDISC": "syscall", + "syscall.RTM_DELROUTE": "syscall", + "syscall.RTM_DELRULE": "syscall", + "syscall.RTM_DELTCLASS": "syscall", + "syscall.RTM_DELTFILTER": "syscall", + "syscall.RTM_DESYNC": "syscall", + "syscall.RTM_F_CLONED": "syscall", + "syscall.RTM_F_EQUALIZE": "syscall", + "syscall.RTM_F_NOTIFY": "syscall", + "syscall.RTM_F_PREFIX": "syscall", + "syscall.RTM_GET": "syscall", + "syscall.RTM_GET2": "syscall", + "syscall.RTM_GETACTION": "syscall", + "syscall.RTM_GETADDR": "syscall", + "syscall.RTM_GETADDRLABEL": "syscall", + "syscall.RTM_GETANYCAST": "syscall", + "syscall.RTM_GETDCB": "syscall", + "syscall.RTM_GETLINK": "syscall", + "syscall.RTM_GETMULTICAST": "syscall", + "syscall.RTM_GETNEIGH": "syscall", + "syscall.RTM_GETNEIGHTBL": "syscall", + "syscall.RTM_GETQDISC": "syscall", + "syscall.RTM_GETROUTE": "syscall", + "syscall.RTM_GETRULE": "syscall", + "syscall.RTM_GETTCLASS": "syscall", + "syscall.RTM_GETTFILTER": "syscall", + "syscall.RTM_IEEE80211": "syscall", + "syscall.RTM_IFANNOUNCE": "syscall", + "syscall.RTM_IFINFO": "syscall", + "syscall.RTM_IFINFO2": "syscall", + "syscall.RTM_LLINFO_UPD": "syscall", + "syscall.RTM_LOCK": "syscall", + "syscall.RTM_LOSING": "syscall", + "syscall.RTM_MAX": "syscall", + "syscall.RTM_MAXSIZE": "syscall", + "syscall.RTM_MISS": "syscall", + "syscall.RTM_NEWACTION": "syscall", + "syscall.RTM_NEWADDR": "syscall", + "syscall.RTM_NEWADDRLABEL": "syscall", + "syscall.RTM_NEWLINK": "syscall", + "syscall.RTM_NEWMADDR": "syscall", + "syscall.RTM_NEWMADDR2": "syscall", + "syscall.RTM_NEWNDUSEROPT": "syscall", + "syscall.RTM_NEWNEIGH": "syscall", + "syscall.RTM_NEWNEIGHTBL": "syscall", + "syscall.RTM_NEWPREFIX": "syscall", + "syscall.RTM_NEWQDISC": "syscall", + "syscall.RTM_NEWROUTE": "syscall", + "syscall.RTM_NEWRULE": "syscall", + "syscall.RTM_NEWTCLASS": "syscall", + "syscall.RTM_NEWTFILTER": "syscall", + "syscall.RTM_NR_FAMILIES": "syscall", + "syscall.RTM_NR_MSGTYPES": "syscall", + "syscall.RTM_OIFINFO": "syscall", + "syscall.RTM_OLDADD": "syscall", + "syscall.RTM_OLDDEL": "syscall", + "syscall.RTM_OOIFINFO": "syscall", + "syscall.RTM_REDIRECT": "syscall", + "syscall.RTM_RESOLVE": "syscall", + "syscall.RTM_RTTUNIT": "syscall", + "syscall.RTM_SETDCB": "syscall", + "syscall.RTM_SETGATE": "syscall", + "syscall.RTM_SETLINK": "syscall", + "syscall.RTM_SETNEIGHTBL": "syscall", + "syscall.RTM_VERSION": "syscall", + "syscall.RTNH_ALIGNTO": "syscall", + "syscall.RTNH_F_DEAD": "syscall", + "syscall.RTNH_F_ONLINK": "syscall", + "syscall.RTNH_F_PERVASIVE": "syscall", + "syscall.RTNLGRP_IPV4_IFADDR": "syscall", + "syscall.RTNLGRP_IPV4_MROUTE": "syscall", + "syscall.RTNLGRP_IPV4_ROUTE": "syscall", + "syscall.RTNLGRP_IPV4_RULE": "syscall", + "syscall.RTNLGRP_IPV6_IFADDR": "syscall", + "syscall.RTNLGRP_IPV6_IFINFO": "syscall", + "syscall.RTNLGRP_IPV6_MROUTE": "syscall", + "syscall.RTNLGRP_IPV6_PREFIX": "syscall", + "syscall.RTNLGRP_IPV6_ROUTE": "syscall", + "syscall.RTNLGRP_IPV6_RULE": "syscall", + "syscall.RTNLGRP_LINK": "syscall", + "syscall.RTNLGRP_ND_USEROPT": "syscall", + "syscall.RTNLGRP_NEIGH": "syscall", + "syscall.RTNLGRP_NONE": "syscall", + "syscall.RTNLGRP_NOTIFY": "syscall", + "syscall.RTNLGRP_TC": "syscall", + "syscall.RTN_ANYCAST": "syscall", + "syscall.RTN_BLACKHOLE": "syscall", + "syscall.RTN_BROADCAST": "syscall", + "syscall.RTN_LOCAL": "syscall", + "syscall.RTN_MAX": "syscall", + "syscall.RTN_MULTICAST": "syscall", + "syscall.RTN_NAT": "syscall", + "syscall.RTN_PROHIBIT": "syscall", + "syscall.RTN_THROW": "syscall", + "syscall.RTN_UNICAST": "syscall", + "syscall.RTN_UNREACHABLE": 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"syscall.RT_CLASS_LOCAL": "syscall", + "syscall.RT_CLASS_MAIN": "syscall", + "syscall.RT_CLASS_MAX": "syscall", + "syscall.RT_CLASS_UNSPEC": "syscall", + "syscall.RT_DEFAULT_FIB": "syscall", + "syscall.RT_NORTREF": "syscall", + "syscall.RT_SCOPE_HOST": "syscall", + "syscall.RT_SCOPE_LINK": "syscall", + "syscall.RT_SCOPE_NOWHERE": "syscall", + "syscall.RT_SCOPE_SITE": "syscall", + "syscall.RT_SCOPE_UNIVERSE": "syscall", + "syscall.RT_TABLEID_MAX": "syscall", + "syscall.RT_TABLE_COMPAT": "syscall", + "syscall.RT_TABLE_DEFAULT": "syscall", + "syscall.RT_TABLE_LOCAL": "syscall", + "syscall.RT_TABLE_MAIN": "syscall", + "syscall.RT_TABLE_MAX": "syscall", + "syscall.RT_TABLE_UNSPEC": "syscall", + "syscall.RUSAGE_CHILDREN": "syscall", + "syscall.RUSAGE_SELF": "syscall", + "syscall.RUSAGE_THREAD": "syscall", + "syscall.Radvisory_t": "syscall", + "syscall.RawSockaddr": "syscall", + "syscall.RawSockaddrAny": "syscall", + "syscall.RawSockaddrDatalink": "syscall", + "syscall.RawSockaddrInet4": "syscall", + "syscall.RawSockaddrInet6": "syscall", + "syscall.RawSockaddrLinklayer": "syscall", + "syscall.RawSockaddrNetlink": "syscall", + "syscall.RawSockaddrUnix": "syscall", + "syscall.RawSyscall": "syscall", + "syscall.RawSyscall6": "syscall", + "syscall.Read": "syscall", + "syscall.ReadConsole": "syscall", + "syscall.ReadDirectoryChanges": "syscall", + "syscall.ReadDirent": "syscall", + "syscall.ReadFile": "syscall", + "syscall.Readlink": "syscall", + "syscall.Reboot": "syscall", + "syscall.Recvfrom": "syscall", + "syscall.Recvmsg": "syscall", + "syscall.RegCloseKey": "syscall", + "syscall.RegEnumKeyEx": "syscall", + "syscall.RegOpenKeyEx": "syscall", + "syscall.RegQueryInfoKey": "syscall", + "syscall.RegQueryValueEx": "syscall", + "syscall.RemoveDirectory": "syscall", + "syscall.Removexattr": "syscall", + "syscall.Rename": "syscall", + "syscall.Renameat": "syscall", + "syscall.Revoke": "syscall", + "syscall.Rlimit": "syscall", + "syscall.Rmdir": "syscall", + "syscall.RouteMessage": "syscall", + "syscall.RouteRIB": "syscall", + "syscall.RtAttr": "syscall", + "syscall.RtGenmsg": "syscall", + "syscall.RtMetrics": "syscall", + "syscall.RtMsg": "syscall", + "syscall.RtMsghdr": "syscall", + "syscall.RtNexthop": "syscall", + "syscall.Rusage": "syscall", + "syscall.SCM_BINTIME": "syscall", + "syscall.SCM_CREDENTIALS": "syscall", + "syscall.SCM_CREDS": "syscall", + "syscall.SCM_RIGHTS": "syscall", + "syscall.SCM_TIMESTAMP": "syscall", + "syscall.SCM_TIMESTAMPING": "syscall", + "syscall.SCM_TIMESTAMPNS": "syscall", + "syscall.SCM_TIMESTAMP_MONOTONIC": "syscall", + "syscall.SHUT_RD": "syscall", + "syscall.SHUT_RDWR": "syscall", + "syscall.SHUT_WR": "syscall", + "syscall.SID": "syscall", + "syscall.SIDAndAttributes": "syscall", + "syscall.SIGABRT": "syscall", + "syscall.SIGALRM": "syscall", + "syscall.SIGBUS": "syscall", + "syscall.SIGCHLD": "syscall", + "syscall.SIGCLD": "syscall", + "syscall.SIGCONT": "syscall", + "syscall.SIGEMT": "syscall", + "syscall.SIGFPE": "syscall", + "syscall.SIGHUP": "syscall", + "syscall.SIGILL": "syscall", + "syscall.SIGINFO": "syscall", + "syscall.SIGINT": "syscall", + "syscall.SIGIO": "syscall", + "syscall.SIGIOT": "syscall", + "syscall.SIGKILL": "syscall", + "syscall.SIGLIBRT": "syscall", + "syscall.SIGLWP": "syscall", + "syscall.SIGPIPE": "syscall", + "syscall.SIGPOLL": "syscall", + "syscall.SIGPROF": "syscall", + "syscall.SIGPWR": "syscall", + "syscall.SIGQUIT": "syscall", + "syscall.SIGSEGV": "syscall", + "syscall.SIGSTKFLT": "syscall", + "syscall.SIGSTOP": "syscall", + "syscall.SIGSYS": "syscall", + "syscall.SIGTERM": "syscall", + "syscall.SIGTHR": "syscall", + "syscall.SIGTRAP": "syscall", + "syscall.SIGTSTP": "syscall", + "syscall.SIGTTIN": "syscall", + "syscall.SIGTTOU": "syscall", + "syscall.SIGUNUSED": "syscall", + "syscall.SIGURG": "syscall", + "syscall.SIGUSR1": "syscall", + "syscall.SIGUSR2": "syscall", + "syscall.SIGVTALRM": "syscall", + "syscall.SIGWINCH": "syscall", + "syscall.SIGXCPU": "syscall", + "syscall.SIGXFSZ": "syscall", + "syscall.SIOCADDDLCI": "syscall", + "syscall.SIOCADDMULTI": "syscall", + "syscall.SIOCADDRT": "syscall", + "syscall.SIOCAIFADDR": "syscall", + "syscall.SIOCAIFGROUP": "syscall", + "syscall.SIOCALIFADDR": "syscall", + "syscall.SIOCARPIPLL": "syscall", + "syscall.SIOCATMARK": "syscall", + "syscall.SIOCAUTOADDR": "syscall", + "syscall.SIOCAUTONETMASK": "syscall", + "syscall.SIOCBRDGADD": "syscall", + "syscall.SIOCBRDGADDS": "syscall", + "syscall.SIOCBRDGARL": "syscall", + "syscall.SIOCBRDGDADDR": "syscall", + "syscall.SIOCBRDGDEL": "syscall", + "syscall.SIOCBRDGDELS": "syscall", + "syscall.SIOCBRDGFLUSH": "syscall", + "syscall.SIOCBRDGFRL": "syscall", + "syscall.SIOCBRDGGCACHE": "syscall", + "syscall.SIOCBRDGGFD": "syscall", + "syscall.SIOCBRDGGHT": "syscall", + "syscall.SIOCBRDGGIFFLGS": "syscall", + "syscall.SIOCBRDGGMA": "syscall", + "syscall.SIOCBRDGGPARAM": "syscall", + "syscall.SIOCBRDGGPRI": "syscall", + "syscall.SIOCBRDGGRL": "syscall", + "syscall.SIOCBRDGGSIFS": "syscall", + "syscall.SIOCBRDGGTO": "syscall", + "syscall.SIOCBRDGIFS": "syscall", + "syscall.SIOCBRDGRTS": "syscall", + "syscall.SIOCBRDGSADDR": "syscall", + "syscall.SIOCBRDGSCACHE": "syscall", + "syscall.SIOCBRDGSFD": "syscall", + "syscall.SIOCBRDGSHT": "syscall", + "syscall.SIOCBRDGSIFCOST": "syscall", + "syscall.SIOCBRDGSIFFLGS": "syscall", + "syscall.SIOCBRDGSIFPRIO": "syscall", + "syscall.SIOCBRDGSMA": "syscall", + "syscall.SIOCBRDGSPRI": "syscall", + "syscall.SIOCBRDGSPROTO": "syscall", + "syscall.SIOCBRDGSTO": "syscall", + "syscall.SIOCBRDGSTXHC": "syscall", + "syscall.SIOCDARP": "syscall", + "syscall.SIOCDELDLCI": "syscall", + "syscall.SIOCDELMULTI": "syscall", + "syscall.SIOCDELRT": "syscall", + "syscall.SIOCDEVPRIVATE": "syscall", + "syscall.SIOCDIFADDR": "syscall", + "syscall.SIOCDIFGROUP": "syscall", + "syscall.SIOCDIFPHYADDR": "syscall", + "syscall.SIOCDLIFADDR": "syscall", + "syscall.SIOCDRARP": "syscall", + "syscall.SIOCGARP": "syscall", + "syscall.SIOCGDRVSPEC": "syscall", + "syscall.SIOCGETKALIVE": "syscall", + "syscall.SIOCGETLABEL": "syscall", + "syscall.SIOCGETPFLOW": "syscall", + "syscall.SIOCGETPFSYNC": "syscall", + "syscall.SIOCGETSGCNT": "syscall", + "syscall.SIOCGETVIFCNT": "syscall", + "syscall.SIOCGETVLAN": "syscall", + "syscall.SIOCGHIWAT": "syscall", + "syscall.SIOCGIFADDR": "syscall", + "syscall.SIOCGIFADDRPREF": "syscall", + "syscall.SIOCGIFALIAS": "syscall", + "syscall.SIOCGIFALTMTU": "syscall", + "syscall.SIOCGIFASYNCMAP": "syscall", + "syscall.SIOCGIFBOND": "syscall", + "syscall.SIOCGIFBR": "syscall", + "syscall.SIOCGIFBRDADDR": "syscall", + "syscall.SIOCGIFCAP": "syscall", + "syscall.SIOCGIFCONF": "syscall", + "syscall.SIOCGIFCOUNT": "syscall", + "syscall.SIOCGIFDATA": "syscall", + "syscall.SIOCGIFDESCR": "syscall", + "syscall.SIOCGIFDEVMTU": "syscall", + "syscall.SIOCGIFDLT": "syscall", + "syscall.SIOCGIFDSTADDR": "syscall", + "syscall.SIOCGIFENCAP": "syscall", + "syscall.SIOCGIFFIB": "syscall", + "syscall.SIOCGIFFLAGS": "syscall", + "syscall.SIOCGIFGATTR": "syscall", + "syscall.SIOCGIFGENERIC": "syscall", + "syscall.SIOCGIFGMEMB": "syscall", + "syscall.SIOCGIFGROUP": "syscall", + "syscall.SIOCGIFHWADDR": "syscall", + "syscall.SIOCGIFINDEX": "syscall", + "syscall.SIOCGIFKPI": "syscall", + "syscall.SIOCGIFMAC": "syscall", + "syscall.SIOCGIFMAP": "syscall", + "syscall.SIOCGIFMEDIA": "syscall", + "syscall.SIOCGIFMEM": "syscall", + "syscall.SIOCGIFMETRIC": "syscall", + "syscall.SIOCGIFMTU": "syscall", + "syscall.SIOCGIFNAME": "syscall", + "syscall.SIOCGIFNETMASK": "syscall", + "syscall.SIOCGIFPDSTADDR": "syscall", + "syscall.SIOCGIFPFLAGS": "syscall", + "syscall.SIOCGIFPHYS": "syscall", + "syscall.SIOCGIFPRIORITY": "syscall", + "syscall.SIOCGIFPSRCADDR": "syscall", + "syscall.SIOCGIFRDOMAIN": "syscall", + "syscall.SIOCGIFRTLABEL": "syscall", + "syscall.SIOCGIFSLAVE": "syscall", + "syscall.SIOCGIFSTATUS": "syscall", + "syscall.SIOCGIFTIMESLOT": "syscall", + "syscall.SIOCGIFTXQLEN": "syscall", + "syscall.SIOCGIFVLAN": "syscall", + "syscall.SIOCGIFWAKEFLAGS": "syscall", + "syscall.SIOCGIFXFLAGS": "syscall", + "syscall.SIOCGLIFADDR": "syscall", + "syscall.SIOCGLIFPHYADDR": "syscall", + "syscall.SIOCGLIFPHYRTABLE": "syscall", + "syscall.SIOCGLINKSTR": "syscall", + "syscall.SIOCGLOWAT": "syscall", + "syscall.SIOCGPGRP": "syscall", + "syscall.SIOCGPRIVATE_0": "syscall", + "syscall.SIOCGPRIVATE_1": "syscall", + "syscall.SIOCGRARP": "syscall", + "syscall.SIOCGSTAMP": "syscall", + "syscall.SIOCGSTAMPNS": "syscall", + "syscall.SIOCGVH": "syscall", + "syscall.SIOCIFCREATE": "syscall", + "syscall.SIOCIFCREATE2": "syscall", + "syscall.SIOCIFDESTROY": "syscall", + "syscall.SIOCIFGCLONERS": "syscall", + "syscall.SIOCINITIFADDR": "syscall", + "syscall.SIOCPROTOPRIVATE": "syscall", + "syscall.SIOCRSLVMULTI": "syscall", + "syscall.SIOCRTMSG": "syscall", + "syscall.SIOCSARP": "syscall", + "syscall.SIOCSDRVSPEC": "syscall", + "syscall.SIOCSETKALIVE": "syscall", + "syscall.SIOCSETLABEL": "syscall", + "syscall.SIOCSETPFLOW": "syscall", + "syscall.SIOCSETPFSYNC": "syscall", + "syscall.SIOCSETVLAN": "syscall", + "syscall.SIOCSHIWAT": "syscall", + "syscall.SIOCSIFADDR": "syscall", + "syscall.SIOCSIFADDRPREF": "syscall", + "syscall.SIOCSIFALTMTU": "syscall", + "syscall.SIOCSIFASYNCMAP": "syscall", + "syscall.SIOCSIFBOND": "syscall", + "syscall.SIOCSIFBR": "syscall", + "syscall.SIOCSIFBRDADDR": "syscall", + "syscall.SIOCSIFCAP": "syscall", + "syscall.SIOCSIFDESCR": "syscall", + "syscall.SIOCSIFDSTADDR": "syscall", + "syscall.SIOCSIFENCAP": "syscall", + "syscall.SIOCSIFFIB": "syscall", + "syscall.SIOCSIFFLAGS": "syscall", + "syscall.SIOCSIFGATTR": "syscall", + "syscall.SIOCSIFGENERIC": "syscall", + "syscall.SIOCSIFHWADDR": "syscall", + "syscall.SIOCSIFHWBROADCAST": "syscall", + "syscall.SIOCSIFKPI": "syscall", + "syscall.SIOCSIFLINK": "syscall", + "syscall.SIOCSIFLLADDR": "syscall", + "syscall.SIOCSIFMAC": 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"syscall.SYS_KTRACE": "syscall", + "syscall.SYS_LCHFLAGS": "syscall", + "syscall.SYS_LCHMOD": "syscall", + "syscall.SYS_LCHOWN": "syscall", + "syscall.SYS_LCHOWN32": "syscall", + "syscall.SYS_LGETFH": "syscall", + "syscall.SYS_LGETXATTR": "syscall", + "syscall.SYS_LINK": "syscall", + "syscall.SYS_LINKAT": "syscall", + "syscall.SYS_LIO_LISTIO": "syscall", + "syscall.SYS_LISTEN": "syscall", + "syscall.SYS_LISTXATTR": "syscall", + "syscall.SYS_LLISTXATTR": "syscall", + "syscall.SYS_LOCK": "syscall", + "syscall.SYS_LOOKUP_DCOOKIE": "syscall", + "syscall.SYS_LPATHCONF": "syscall", + "syscall.SYS_LREMOVEXATTR": "syscall", + "syscall.SYS_LSEEK": "syscall", + "syscall.SYS_LSETXATTR": "syscall", + "syscall.SYS_LSTAT": "syscall", + "syscall.SYS_LSTAT64": "syscall", + "syscall.SYS_LSTAT64_EXTENDED": "syscall", + "syscall.SYS_LSTATV": "syscall", + "syscall.SYS_LSTAT_EXTENDED": "syscall", + "syscall.SYS_LUTIMES": "syscall", + "syscall.SYS_MAC_SYSCALL": "syscall", + "syscall.SYS_MADVISE": "syscall", + "syscall.SYS_MADVISE1": "syscall", + "syscall.SYS_MAXSYSCALL": "syscall", + "syscall.SYS_MBIND": "syscall", + "syscall.SYS_MIGRATE_PAGES": "syscall", + "syscall.SYS_MINCORE": "syscall", + "syscall.SYS_MINHERIT": "syscall", + "syscall.SYS_MKCOMPLEX": "syscall", + "syscall.SYS_MKDIR": "syscall", + "syscall.SYS_MKDIRAT": "syscall", + "syscall.SYS_MKDIR_EXTENDED": "syscall", + "syscall.SYS_MKFIFO": "syscall", + "syscall.SYS_MKFIFOAT": "syscall", + "syscall.SYS_MKFIFO_EXTENDED": "syscall", + "syscall.SYS_MKNOD": "syscall", + "syscall.SYS_MKNODAT": "syscall", + "syscall.SYS_MLOCK": "syscall", + "syscall.SYS_MLOCKALL": "syscall", + "syscall.SYS_MMAP": "syscall", + "syscall.SYS_MMAP2": "syscall", + "syscall.SYS_MODCTL": "syscall", + "syscall.SYS_MODFIND": "syscall", + "syscall.SYS_MODFNEXT": "syscall", + "syscall.SYS_MODIFY_LDT": "syscall", + "syscall.SYS_MODNEXT": "syscall", + "syscall.SYS_MODSTAT": "syscall", + "syscall.SYS_MODWATCH": "syscall", + "syscall.SYS_MOUNT": "syscall", + 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"syscall.SYS_PSYNCH_RW_LONGRDLOCK": "syscall", + "syscall.SYS_PSYNCH_RW_RDLOCK": "syscall", + "syscall.SYS_PSYNCH_RW_UNLOCK": "syscall", + "syscall.SYS_PSYNCH_RW_UNLOCK2": "syscall", + "syscall.SYS_PSYNCH_RW_UPGRADE": "syscall", + "syscall.SYS_PSYNCH_RW_WRLOCK": "syscall", + "syscall.SYS_PSYNCH_RW_YIELDWRLOCK": "syscall", + "syscall.SYS_PTRACE": "syscall", + "syscall.SYS_PUTPMSG": "syscall", + "syscall.SYS_PWRITE": "syscall", + "syscall.SYS_PWRITE64": "syscall", + "syscall.SYS_PWRITEV": "syscall", + "syscall.SYS_PWRITE_NOCANCEL": "syscall", + "syscall.SYS_QUERY_MODULE": "syscall", + "syscall.SYS_QUOTACTL": "syscall", + "syscall.SYS_RASCTL": "syscall", + "syscall.SYS_RCTL_ADD_RULE": "syscall", + "syscall.SYS_RCTL_GET_LIMITS": "syscall", + "syscall.SYS_RCTL_GET_RACCT": "syscall", + "syscall.SYS_RCTL_GET_RULES": "syscall", + "syscall.SYS_RCTL_REMOVE_RULE": "syscall", + "syscall.SYS_READ": "syscall", + "syscall.SYS_READAHEAD": "syscall", + "syscall.SYS_READDIR": "syscall", + 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"syscall.SYS_SETREGID": "syscall", + "syscall.SYS_SETREGID32": "syscall", + "syscall.SYS_SETRESGID": "syscall", + "syscall.SYS_SETRESGID32": "syscall", + "syscall.SYS_SETRESUID": "syscall", + "syscall.SYS_SETRESUID32": "syscall", + "syscall.SYS_SETREUID": "syscall", + "syscall.SYS_SETREUID32": "syscall", + "syscall.SYS_SETRLIMIT": "syscall", + "syscall.SYS_SETRTABLE": "syscall", + "syscall.SYS_SETSGROUPS": "syscall", + "syscall.SYS_SETSID": "syscall", + "syscall.SYS_SETSOCKOPT": "syscall", + "syscall.SYS_SETTID": "syscall", + "syscall.SYS_SETTID_WITH_PID": "syscall", + "syscall.SYS_SETTIMEOFDAY": "syscall", + "syscall.SYS_SETUID": "syscall", + "syscall.SYS_SETUID32": "syscall", + "syscall.SYS_SETWGROUPS": "syscall", + "syscall.SYS_SETXATTR": "syscall", + "syscall.SYS_SET_MEMPOLICY": "syscall", + "syscall.SYS_SET_ROBUST_LIST": "syscall", + "syscall.SYS_SET_THREAD_AREA": "syscall", + "syscall.SYS_SET_TID_ADDRESS": "syscall", + "syscall.SYS_SGETMASK": "syscall", + 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"syscall.SYS__LWP_GETNAME": "syscall", + "syscall.SYS__LWP_GETPRIVATE": "syscall", + "syscall.SYS__LWP_KILL": "syscall", + "syscall.SYS__LWP_PARK": "syscall", + "syscall.SYS__LWP_SELF": "syscall", + "syscall.SYS__LWP_SETNAME": "syscall", + "syscall.SYS__LWP_SETPRIVATE": "syscall", + "syscall.SYS__LWP_SUSPEND": "syscall", + "syscall.SYS__LWP_UNPARK": "syscall", + "syscall.SYS__LWP_UNPARK_ALL": "syscall", + "syscall.SYS__LWP_WAIT": "syscall", + "syscall.SYS__LWP_WAKEUP": "syscall", + "syscall.SYS__NEWSELECT": "syscall", + "syscall.SYS__PSET_BIND": "syscall", + "syscall.SYS__SCHED_GETAFFINITY": "syscall", + "syscall.SYS__SCHED_GETPARAM": "syscall", + "syscall.SYS__SCHED_SETAFFINITY": "syscall", + "syscall.SYS__SCHED_SETPARAM": "syscall", + "syscall.SYS__SYSCTL": "syscall", + "syscall.SYS__UMTX_LOCK": "syscall", + "syscall.SYS__UMTX_OP": "syscall", + "syscall.SYS__UMTX_UNLOCK": "syscall", + "syscall.SYS___ACL_ACLCHECK_FD": "syscall", + "syscall.SYS___ACL_ACLCHECK_FILE": "syscall", + "syscall.SYS___ACL_ACLCHECK_LINK": "syscall", + "syscall.SYS___ACL_DELETE_FD": "syscall", + "syscall.SYS___ACL_DELETE_FILE": "syscall", + "syscall.SYS___ACL_DELETE_LINK": "syscall", + "syscall.SYS___ACL_GET_FD": "syscall", + "syscall.SYS___ACL_GET_FILE": "syscall", + "syscall.SYS___ACL_GET_LINK": "syscall", + "syscall.SYS___ACL_SET_FD": "syscall", + "syscall.SYS___ACL_SET_FILE": "syscall", + "syscall.SYS___ACL_SET_LINK": "syscall", + "syscall.SYS___CLONE": "syscall", + "syscall.SYS___DISABLE_THREADSIGNAL": "syscall", + "syscall.SYS___GETCWD": "syscall", + "syscall.SYS___GETLOGIN": "syscall", + "syscall.SYS___GET_TCB": "syscall", + "syscall.SYS___MAC_EXECVE": "syscall", + "syscall.SYS___MAC_GETFSSTAT": "syscall", + "syscall.SYS___MAC_GET_FD": "syscall", + "syscall.SYS___MAC_GET_FILE": "syscall", + "syscall.SYS___MAC_GET_LCID": "syscall", + "syscall.SYS___MAC_GET_LCTX": "syscall", + "syscall.SYS___MAC_GET_LINK": "syscall", + "syscall.SYS___MAC_GET_MOUNT": "syscall", + "syscall.SYS___MAC_GET_PID": "syscall", + "syscall.SYS___MAC_GET_PROC": "syscall", + "syscall.SYS___MAC_MOUNT": "syscall", + "syscall.SYS___MAC_SET_FD": "syscall", + "syscall.SYS___MAC_SET_FILE": "syscall", + "syscall.SYS___MAC_SET_LCTX": "syscall", + "syscall.SYS___MAC_SET_LINK": "syscall", + "syscall.SYS___MAC_SET_PROC": "syscall", + "syscall.SYS___MAC_SYSCALL": "syscall", + "syscall.SYS___OLD_SEMWAIT_SIGNAL": "syscall", + "syscall.SYS___OLD_SEMWAIT_SIGNAL_NOCANCEL": "syscall", + "syscall.SYS___POSIX_CHOWN": "syscall", + "syscall.SYS___POSIX_FCHOWN": "syscall", + "syscall.SYS___POSIX_LCHOWN": "syscall", + "syscall.SYS___POSIX_RENAME": "syscall", + "syscall.SYS___PTHREAD_CANCELED": "syscall", + "syscall.SYS___PTHREAD_CHDIR": "syscall", + "syscall.SYS___PTHREAD_FCHDIR": "syscall", + "syscall.SYS___PTHREAD_KILL": "syscall", + "syscall.SYS___PTHREAD_MARKCANCEL": "syscall", + "syscall.SYS___PTHREAD_SIGMASK": "syscall", + "syscall.SYS___QUOTACTL": "syscall", + "syscall.SYS___SEMCTL": "syscall", + "syscall.SYS___SEMWAIT_SIGNAL": "syscall", + "syscall.SYS___SEMWAIT_SIGNAL_NOCANCEL": "syscall", + "syscall.SYS___SETLOGIN": "syscall", + "syscall.SYS___SETUGID": "syscall", + "syscall.SYS___SET_TCB": "syscall", + "syscall.SYS___SIGACTION_SIGTRAMP": "syscall", + "syscall.SYS___SIGTIMEDWAIT": "syscall", + "syscall.SYS___SIGWAIT": "syscall", + "syscall.SYS___SIGWAIT_NOCANCEL": "syscall", + "syscall.SYS___SYSCTL": "syscall", + "syscall.SYS___TFORK": "syscall", + "syscall.SYS___THREXIT": "syscall", + "syscall.SYS___THRSIGDIVERT": "syscall", + "syscall.SYS___THRSLEEP": "syscall", + "syscall.SYS___THRWAKEUP": "syscall", + "syscall.S_ARCH1": "syscall", + "syscall.S_ARCH2": "syscall", + "syscall.S_BLKSIZE": "syscall", + "syscall.S_IEXEC": "syscall", + "syscall.S_IFBLK": "syscall", + "syscall.S_IFCHR": "syscall", + "syscall.S_IFDIR": "syscall", + "syscall.S_IFIFO": "syscall", + "syscall.S_IFLNK": "syscall", + "syscall.S_IFMT": "syscall", + "syscall.S_IFREG": "syscall", + "syscall.S_IFSOCK": "syscall", + "syscall.S_IFWHT": "syscall", + "syscall.S_IREAD": "syscall", + "syscall.S_IRGRP": "syscall", + "syscall.S_IROTH": "syscall", + "syscall.S_IRUSR": "syscall", + "syscall.S_IRWXG": "syscall", + "syscall.S_IRWXO": "syscall", + "syscall.S_IRWXU": "syscall", + "syscall.S_ISGID": "syscall", + "syscall.S_ISTXT": "syscall", + "syscall.S_ISUID": "syscall", + "syscall.S_ISVTX": "syscall", + "syscall.S_IWGRP": "syscall", + "syscall.S_IWOTH": "syscall", + "syscall.S_IWRITE": "syscall", + "syscall.S_IWUSR": "syscall", + "syscall.S_IXGRP": "syscall", + "syscall.S_IXOTH": "syscall", + "syscall.S_IXUSR": "syscall", + "syscall.S_LOGIN_SET": "syscall", + "syscall.SecurityAttributes": "syscall", + "syscall.Seek": "syscall", + "syscall.Select": "syscall", + "syscall.Sendfile": "syscall", + "syscall.Sendmsg": "syscall", + "syscall.Sendto": "syscall", + "syscall.Servent": "syscall", + "syscall.SetBpf": "syscall", + "syscall.SetBpfBuflen": "syscall", + "syscall.SetBpfDatalink": "syscall", + "syscall.SetBpfHeadercmpl": "syscall", + "syscall.SetBpfImmediate": "syscall", + "syscall.SetBpfInterface": "syscall", + "syscall.SetBpfPromisc": "syscall", + "syscall.SetBpfTimeout": "syscall", + "syscall.SetCurrentDirectory": "syscall", + "syscall.SetEndOfFile": "syscall", + "syscall.SetEnvironmentVariable": "syscall", + "syscall.SetFileAttributes": "syscall", + "syscall.SetFileCompletionNotificationModes": "syscall", + "syscall.SetFilePointer": "syscall", + "syscall.SetFileTime": "syscall", + "syscall.SetHandleInformation": "syscall", + "syscall.SetKevent": "syscall", + "syscall.SetLsfPromisc": "syscall", + "syscall.SetNonblock": "syscall", + "syscall.Setdomainname": "syscall", + "syscall.Setegid": "syscall", + "syscall.Setenv": "syscall", + "syscall.Seteuid": "syscall", + "syscall.Setfsgid": "syscall", + "syscall.Setfsuid": "syscall", + "syscall.Setgid": "syscall", + "syscall.Setgroups": "syscall", + "syscall.Sethostname": "syscall", + "syscall.Setlogin": "syscall", + "syscall.Setpgid": "syscall", + "syscall.Setpriority": "syscall", + "syscall.Setprivexec": "syscall", + "syscall.Setregid": "syscall", + "syscall.Setresgid": "syscall", + "syscall.Setresuid": "syscall", + "syscall.Setreuid": "syscall", + "syscall.Setrlimit": "syscall", + "syscall.Setsid": "syscall", + "syscall.Setsockopt": "syscall", + "syscall.SetsockoptByte": "syscall", + "syscall.SetsockoptICMPv6Filter": "syscall", + "syscall.SetsockoptIPMreq": "syscall", + "syscall.SetsockoptIPMreqn": "syscall", + "syscall.SetsockoptIPv6Mreq": "syscall", + "syscall.SetsockoptInet4Addr": "syscall", + "syscall.SetsockoptInt": "syscall", + "syscall.SetsockoptLinger": "syscall", + "syscall.SetsockoptString": "syscall", + "syscall.SetsockoptTimeval": "syscall", + "syscall.Settimeofday": "syscall", + "syscall.Setuid": "syscall", + "syscall.Setxattr": "syscall", + "syscall.Shutdown": "syscall", + "syscall.SidTypeAlias": "syscall", + "syscall.SidTypeComputer": "syscall", + "syscall.SidTypeDeletedAccount": "syscall", + "syscall.SidTypeDomain": "syscall", + "syscall.SidTypeGroup": "syscall", + "syscall.SidTypeInvalid": "syscall", + "syscall.SidTypeLabel": "syscall", + "syscall.SidTypeUnknown": "syscall", + "syscall.SidTypeUser": "syscall", + "syscall.SidTypeWellKnownGroup": "syscall", + "syscall.Signal": "syscall", + "syscall.SizeofBpfHdr": "syscall", + "syscall.SizeofBpfInsn": "syscall", + "syscall.SizeofBpfProgram": "syscall", + "syscall.SizeofBpfStat": "syscall", + "syscall.SizeofBpfVersion": "syscall", + "syscall.SizeofBpfZbuf": "syscall", + "syscall.SizeofBpfZbufHeader": "syscall", + "syscall.SizeofCmsghdr": "syscall", + "syscall.SizeofICMPv6Filter": "syscall", + "syscall.SizeofIPMreq": "syscall", + "syscall.SizeofIPMreqn": "syscall", + "syscall.SizeofIPv6MTUInfo": "syscall", + "syscall.SizeofIPv6Mreq": "syscall", + "syscall.SizeofIfAddrmsg": "syscall", + "syscall.SizeofIfAnnounceMsghdr": "syscall", + "syscall.SizeofIfData": "syscall", + "syscall.SizeofIfInfomsg": "syscall", + "syscall.SizeofIfMsghdr": "syscall", + "syscall.SizeofIfaMsghdr": "syscall", + "syscall.SizeofIfmaMsghdr": "syscall", + "syscall.SizeofIfmaMsghdr2": "syscall", + "syscall.SizeofInet4Pktinfo": "syscall", + "syscall.SizeofInet6Pktinfo": "syscall", + "syscall.SizeofInotifyEvent": "syscall", + "syscall.SizeofLinger": "syscall", + "syscall.SizeofMsghdr": "syscall", + "syscall.SizeofNlAttr": "syscall", + "syscall.SizeofNlMsgerr": "syscall", + "syscall.SizeofNlMsghdr": "syscall", + "syscall.SizeofRtAttr": "syscall", + "syscall.SizeofRtGenmsg": "syscall", + "syscall.SizeofRtMetrics": "syscall", + "syscall.SizeofRtMsg": "syscall", + "syscall.SizeofRtMsghdr": "syscall", + "syscall.SizeofRtNexthop": "syscall", + "syscall.SizeofSockFilter": "syscall", + "syscall.SizeofSockFprog": "syscall", + "syscall.SizeofSockaddrAny": "syscall", + "syscall.SizeofSockaddrDatalink": "syscall", + "syscall.SizeofSockaddrInet4": "syscall", + "syscall.SizeofSockaddrInet6": "syscall", + "syscall.SizeofSockaddrLinklayer": "syscall", + "syscall.SizeofSockaddrNetlink": "syscall", + "syscall.SizeofSockaddrUnix": "syscall", + "syscall.SizeofTCPInfo": "syscall", + "syscall.SizeofUcred": "syscall", + "syscall.SlicePtrFromStrings": "syscall", + "syscall.SockFilter": "syscall", + "syscall.SockFprog": "syscall", + "syscall.SockaddrDatalink": "syscall", + "syscall.SockaddrGen": "syscall", + "syscall.SockaddrInet4": "syscall", + "syscall.SockaddrInet6": "syscall", + "syscall.SockaddrLinklayer": "syscall", + "syscall.SockaddrNetlink": "syscall", + "syscall.SockaddrUnix": "syscall", + "syscall.Socket": "syscall", + "syscall.SocketControlMessage": "syscall", + "syscall.SocketDisableIPv6": "syscall", + "syscall.Socketpair": "syscall", + "syscall.Splice": "syscall", + "syscall.StartProcess": "syscall", + "syscall.StartupInfo": "syscall", + "syscall.Stat": "syscall", + "syscall.Stat_t": "syscall", + "syscall.Statfs": "syscall", + "syscall.Statfs_t": "syscall", + "syscall.Stderr": "syscall", + "syscall.Stdin": "syscall", + "syscall.Stdout": "syscall", + "syscall.StringBytePtr": "syscall", + "syscall.StringByteSlice": "syscall", + "syscall.StringSlicePtr": "syscall", + "syscall.StringToSid": "syscall", + "syscall.StringToUTF16": "syscall", + "syscall.StringToUTF16Ptr": "syscall", + "syscall.Symlink": "syscall", + "syscall.Sync": "syscall", + "syscall.SyncFileRange": "syscall", + "syscall.SysProcAttr": "syscall", + "syscall.Syscall": "syscall", + "syscall.Syscall12": "syscall", + "syscall.Syscall15": "syscall", + "syscall.Syscall6": "syscall", + "syscall.Syscall9": "syscall", + "syscall.Sysctl": "syscall", + "syscall.SysctlUint32": "syscall", + "syscall.Sysctlnode": "syscall", + "syscall.Sysinfo": "syscall", + "syscall.Sysinfo_t": "syscall", + "syscall.Systemtime": "syscall", + "syscall.TCGETS": "syscall", + "syscall.TCIFLUSH": "syscall", + "syscall.TCIOFLUSH": "syscall", + "syscall.TCOFLUSH": "syscall", + "syscall.TCPInfo": "syscall", + "syscall.TCP_CA_NAME_MAX": "syscall", + "syscall.TCP_CONGCTL": "syscall", + "syscall.TCP_CONGESTION": "syscall", + "syscall.TCP_CONNECTIONTIMEOUT": "syscall", + "syscall.TCP_CORK": "syscall", + "syscall.TCP_DEFER_ACCEPT": "syscall", + "syscall.TCP_INFO": "syscall", + "syscall.TCP_KEEPALIVE": "syscall", + "syscall.TCP_KEEPCNT": "syscall", + "syscall.TCP_KEEPIDLE": "syscall", + "syscall.TCP_KEEPINIT": "syscall", + "syscall.TCP_KEEPINTVL": "syscall", + "syscall.TCP_LINGER2": "syscall", + "syscall.TCP_MAXBURST": "syscall", + "syscall.TCP_MAXHLEN": "syscall", + "syscall.TCP_MAXOLEN": "syscall", + "syscall.TCP_MAXSEG": "syscall", + "syscall.TCP_MAXWIN": "syscall", + "syscall.TCP_MAX_SACK": "syscall", + "syscall.TCP_MAX_WINSHIFT": "syscall", + "syscall.TCP_MD5SIG": "syscall", + "syscall.TCP_MD5SIG_MAXKEYLEN": "syscall", + "syscall.TCP_MINMSS": "syscall", + "syscall.TCP_MINMSSOVERLOAD": "syscall", + "syscall.TCP_MSS": "syscall", + "syscall.TCP_NODELAY": "syscall", + "syscall.TCP_NOOPT": "syscall", + "syscall.TCP_NOPUSH": "syscall", + "syscall.TCP_NSTATES": "syscall", + "syscall.TCP_QUICKACK": "syscall", + "syscall.TCP_RXT_CONNDROPTIME": "syscall", + "syscall.TCP_RXT_FINDROP": "syscall", + "syscall.TCP_SACK_ENABLE": "syscall", + "syscall.TCP_SYNCNT": "syscall", + "syscall.TCP_WINDOW_CLAMP": "syscall", + "syscall.TCSAFLUSH": "syscall", + "syscall.TCSETS": "syscall", + "syscall.TF_DISCONNECT": "syscall", + "syscall.TF_REUSE_SOCKET": "syscall", + "syscall.TF_USE_DEFAULT_WORKER": "syscall", + "syscall.TF_USE_KERNEL_APC": "syscall", + "syscall.TF_USE_SYSTEM_THREAD": "syscall", + "syscall.TF_WRITE_BEHIND": "syscall", + "syscall.TIME_ZONE_ID_DAYLIGHT": "syscall", + "syscall.TIME_ZONE_ID_STANDARD": "syscall", + "syscall.TIME_ZONE_ID_UNKNOWN": "syscall", + "syscall.TIOCCBRK": "syscall", + "syscall.TIOCCDTR": "syscall", + "syscall.TIOCCONS": "syscall", + "syscall.TIOCDCDTIMESTAMP": "syscall", + "syscall.TIOCDRAIN": "syscall", + "syscall.TIOCDSIMICROCODE": "syscall", + "syscall.TIOCEXCL": "syscall", + "syscall.TIOCEXT": "syscall", + "syscall.TIOCFLAG_CDTRCTS": "syscall", + "syscall.TIOCFLAG_CLOCAL": "syscall", + "syscall.TIOCFLAG_CRTSCTS": "syscall", + "syscall.TIOCFLAG_MDMBUF": "syscall", + "syscall.TIOCFLAG_PPS": "syscall", + "syscall.TIOCFLAG_SOFTCAR": "syscall", + "syscall.TIOCFLUSH": "syscall", + "syscall.TIOCGDEV": "syscall", + "syscall.TIOCGDRAINWAIT": "syscall", + "syscall.TIOCGETA": "syscall", + "syscall.TIOCGETD": "syscall", + "syscall.TIOCGFLAGS": "syscall", + "syscall.TIOCGICOUNT": "syscall", + "syscall.TIOCGLCKTRMIOS": "syscall", + "syscall.TIOCGLINED": "syscall", + "syscall.TIOCGPGRP": "syscall", + "syscall.TIOCGPTN": "syscall", + "syscall.TIOCGQSIZE": "syscall", + "syscall.TIOCGRANTPT": "syscall", + "syscall.TIOCGRS485": "syscall", + "syscall.TIOCGSERIAL": "syscall", + "syscall.TIOCGSID": "syscall", + "syscall.TIOCGSIZE": "syscall", + "syscall.TIOCGSOFTCAR": "syscall", + "syscall.TIOCGTSTAMP": "syscall", + "syscall.TIOCGWINSZ": "syscall", + "syscall.TIOCINQ": "syscall", + "syscall.TIOCIXOFF": "syscall", + "syscall.TIOCIXON": "syscall", + "syscall.TIOCLINUX": "syscall", + "syscall.TIOCMBIC": "syscall", + "syscall.TIOCMBIS": "syscall", + "syscall.TIOCMGDTRWAIT": "syscall", + "syscall.TIOCMGET": "syscall", + "syscall.TIOCMIWAIT": "syscall", + "syscall.TIOCMODG": "syscall", + "syscall.TIOCMODS": "syscall", + "syscall.TIOCMSDTRWAIT": "syscall", + "syscall.TIOCMSET": "syscall", + "syscall.TIOCM_CAR": "syscall", + "syscall.TIOCM_CD": "syscall", + "syscall.TIOCM_CTS": "syscall", + "syscall.TIOCM_DCD": "syscall", + "syscall.TIOCM_DSR": "syscall", + "syscall.TIOCM_DTR": "syscall", + "syscall.TIOCM_LE": "syscall", + "syscall.TIOCM_RI": "syscall", + "syscall.TIOCM_RNG": "syscall", + "syscall.TIOCM_RTS": "syscall", + "syscall.TIOCM_SR": "syscall", + "syscall.TIOCM_ST": "syscall", + "syscall.TIOCNOTTY": "syscall", + "syscall.TIOCNXCL": "syscall", + "syscall.TIOCOUTQ": "syscall", + "syscall.TIOCPKT": "syscall", + "syscall.TIOCPKT_DATA": "syscall", + "syscall.TIOCPKT_DOSTOP": "syscall", + "syscall.TIOCPKT_FLUSHREAD": "syscall", + "syscall.TIOCPKT_FLUSHWRITE": "syscall", + "syscall.TIOCPKT_IOCTL": "syscall", + "syscall.TIOCPKT_NOSTOP": "syscall", + "syscall.TIOCPKT_START": "syscall", + "syscall.TIOCPKT_STOP": "syscall", + "syscall.TIOCPTMASTER": "syscall", + "syscall.TIOCPTMGET": "syscall", + "syscall.TIOCPTSNAME": "syscall", + "syscall.TIOCPTYGNAME": "syscall", + "syscall.TIOCPTYGRANT": "syscall", + "syscall.TIOCPTYUNLK": "syscall", + "syscall.TIOCRCVFRAME": "syscall", + "syscall.TIOCREMOTE": "syscall", + "syscall.TIOCSBRK": "syscall", + "syscall.TIOCSCONS": "syscall", + "syscall.TIOCSCTTY": "syscall", + "syscall.TIOCSDRAINWAIT": "syscall", + "syscall.TIOCSDTR": "syscall", + "syscall.TIOCSERCONFIG": "syscall", + "syscall.TIOCSERGETLSR": "syscall", + "syscall.TIOCSERGETMULTI": "syscall", + "syscall.TIOCSERGSTRUCT": "syscall", + "syscall.TIOCSERGWILD": "syscall", + "syscall.TIOCSERSETMULTI": "syscall", + "syscall.TIOCSERSWILD": "syscall", + "syscall.TIOCSER_TEMT": "syscall", + "syscall.TIOCSETA": "syscall", + "syscall.TIOCSETAF": "syscall", + "syscall.TIOCSETAW": "syscall", + "syscall.TIOCSETD": "syscall", + "syscall.TIOCSFLAGS": "syscall", + "syscall.TIOCSIG": "syscall", + "syscall.TIOCSLCKTRMIOS": "syscall", + "syscall.TIOCSLINED": "syscall", + "syscall.TIOCSPGRP": "syscall", + "syscall.TIOCSPTLCK": "syscall", + "syscall.TIOCSQSIZE": "syscall", + "syscall.TIOCSRS485": "syscall", + "syscall.TIOCSSERIAL": "syscall", + "syscall.TIOCSSIZE": "syscall", + "syscall.TIOCSSOFTCAR": "syscall", + "syscall.TIOCSTART": "syscall", + "syscall.TIOCSTAT": "syscall", + "syscall.TIOCSTI": "syscall", + "syscall.TIOCSTOP": "syscall", + "syscall.TIOCSTSTAMP": "syscall", + "syscall.TIOCSWINSZ": "syscall", + "syscall.TIOCTIMESTAMP": "syscall", + "syscall.TIOCUCNTL": "syscall", + "syscall.TIOCVHANGUP": "syscall", + "syscall.TIOCXMTFRAME": "syscall", + "syscall.TOKEN_ADJUST_DEFAULT": "syscall", + "syscall.TOKEN_ADJUST_GROUPS": "syscall", + "syscall.TOKEN_ADJUST_PRIVILEGES": "syscall", + "syscall.TOKEN_ALL_ACCESS": "syscall", + "syscall.TOKEN_ASSIGN_PRIMARY": "syscall", + "syscall.TOKEN_DUPLICATE": "syscall", + "syscall.TOKEN_EXECUTE": "syscall", + "syscall.TOKEN_IMPERSONATE": "syscall", + "syscall.TOKEN_QUERY": "syscall", + "syscall.TOKEN_QUERY_SOURCE": "syscall", + "syscall.TOKEN_READ": "syscall", + "syscall.TOKEN_WRITE": "syscall", + "syscall.TOSTOP": "syscall", + "syscall.TRUNCATE_EXISTING": "syscall", + "syscall.TUNATTACHFILTER": "syscall", + "syscall.TUNDETACHFILTER": "syscall", + "syscall.TUNGETFEATURES": "syscall", + "syscall.TUNGETIFF": "syscall", + "syscall.TUNGETSNDBUF": "syscall", + "syscall.TUNGETVNETHDRSZ": "syscall", + "syscall.TUNSETDEBUG": "syscall", + "syscall.TUNSETGROUP": "syscall", + "syscall.TUNSETIFF": "syscall", + "syscall.TUNSETLINK": "syscall", + "syscall.TUNSETNOCSUM": "syscall", + "syscall.TUNSETOFFLOAD": "syscall", + "syscall.TUNSETOWNER": "syscall", + "syscall.TUNSETPERSIST": "syscall", + "syscall.TUNSETSNDBUF": "syscall", + "syscall.TUNSETTXFILTER": "syscall", + "syscall.TUNSETVNETHDRSZ": "syscall", + "syscall.Tee": "syscall", + "syscall.TerminateProcess": "syscall", + "syscall.Termios": "syscall", + "syscall.Tgkill": "syscall", + "syscall.Time": "syscall", + "syscall.Time_t": "syscall", + "syscall.Times": "syscall", + "syscall.Timespec": "syscall", + "syscall.TimespecToNsec": "syscall", + "syscall.Timeval": "syscall", + "syscall.Timeval32": "syscall", + "syscall.TimevalToNsec": "syscall", + "syscall.Timex": "syscall", + "syscall.Timezoneinformation": "syscall", + "syscall.Tms": "syscall", + "syscall.Token": "syscall", + "syscall.TokenAccessInformation": "syscall", + "syscall.TokenAuditPolicy": "syscall", + "syscall.TokenDefaultDacl": "syscall", + "syscall.TokenElevation": "syscall", + "syscall.TokenElevationType": "syscall", + "syscall.TokenGroups": "syscall", + "syscall.TokenGroupsAndPrivileges": "syscall", + "syscall.TokenHasRestrictions": "syscall", + "syscall.TokenImpersonationLevel": "syscall", + "syscall.TokenIntegrityLevel": "syscall", + "syscall.TokenLinkedToken": "syscall", + "syscall.TokenLogonSid": "syscall", + "syscall.TokenMandatoryPolicy": "syscall", + "syscall.TokenOrigin": "syscall", + "syscall.TokenOwner": "syscall", + "syscall.TokenPrimaryGroup": "syscall", + "syscall.TokenPrivileges": "syscall", + "syscall.TokenRestrictedSids": "syscall", + "syscall.TokenSandBoxInert": "syscall", + "syscall.TokenSessionId": "syscall", + "syscall.TokenSessionReference": "syscall", + "syscall.TokenSource": "syscall", + "syscall.TokenStatistics": "syscall", + "syscall.TokenType": "syscall", + "syscall.TokenUIAccess": "syscall", + "syscall.TokenUser": "syscall", + "syscall.TokenVirtualizationAllowed": "syscall", + "syscall.TokenVirtualizationEnabled": "syscall", + "syscall.Tokenprimarygroup": "syscall", + "syscall.Tokenuser": "syscall", + "syscall.TranslateAccountName": "syscall", + "syscall.TranslateName": "syscall", + "syscall.TransmitFile": "syscall", + "syscall.TransmitFileBuffers": "syscall", + "syscall.Truncate": "syscall", + "syscall.USAGE_MATCH_TYPE_AND": "syscall", + "syscall.USAGE_MATCH_TYPE_OR": "syscall", + "syscall.UTF16FromString": "syscall", + "syscall.UTF16PtrFromString": "syscall", + "syscall.UTF16ToString": "syscall", + "syscall.Ucred": "syscall", + "syscall.Umask": "syscall", + "syscall.Uname": "syscall", + "syscall.Undelete": "syscall", + "syscall.UnixCredentials": "syscall", + "syscall.UnixRights": "syscall", + "syscall.Unlink": "syscall", + "syscall.Unlinkat": "syscall", + "syscall.UnmapViewOfFile": "syscall", + "syscall.Unmount": "syscall", + "syscall.Unshare": "syscall", + "syscall.UserInfo10": "syscall", + "syscall.Ustat": "syscall", + "syscall.Ustat_t": "syscall", + "syscall.Utimbuf": "syscall", + "syscall.Utime": "syscall", + "syscall.Utimes": "syscall", + "syscall.UtimesNano": "syscall", + "syscall.Utsname": "syscall", + "syscall.VDISCARD": "syscall", + "syscall.VDSUSP": "syscall", + "syscall.VEOF": "syscall", + "syscall.VEOL": "syscall", + "syscall.VEOL2": "syscall", + "syscall.VERASE": "syscall", + "syscall.VERASE2": "syscall", + "syscall.VINTR": "syscall", + "syscall.VKILL": "syscall", + "syscall.VLNEXT": "syscall", + "syscall.VMIN": "syscall", + "syscall.VQUIT": "syscall", + "syscall.VREPRINT": "syscall", + "syscall.VSTART": "syscall", + "syscall.VSTATUS": "syscall", + "syscall.VSTOP": "syscall", + "syscall.VSUSP": "syscall", + "syscall.VSWTC": "syscall", + "syscall.VT0": "syscall", + "syscall.VT1": "syscall", + "syscall.VTDLY": "syscall", + "syscall.VTIME": "syscall", + "syscall.VWERASE": "syscall", + "syscall.VirtualLock": "syscall", + "syscall.VirtualUnlock": "syscall", + "syscall.WAIT_ABANDONED": "syscall", + "syscall.WAIT_FAILED": "syscall", + "syscall.WAIT_OBJECT_0": "syscall", + "syscall.WAIT_TIMEOUT": "syscall", + "syscall.WALL": "syscall", + "syscall.WALLSIG": "syscall", + "syscall.WALTSIG": "syscall", + "syscall.WCLONE": "syscall", + "syscall.WCONTINUED": "syscall", + "syscall.WCOREFLAG": "syscall", + "syscall.WEXITED": "syscall", + "syscall.WLINUXCLONE": "syscall", + "syscall.WNOHANG": "syscall", + "syscall.WNOTHREAD": "syscall", + "syscall.WNOWAIT": "syscall", + "syscall.WNOZOMBIE": "syscall", + "syscall.WOPTSCHECKED": "syscall", + "syscall.WORDSIZE": "syscall", + "syscall.WSABuf": "syscall", + "syscall.WSACleanup": "syscall", + "syscall.WSADESCRIPTION_LEN": "syscall", + "syscall.WSAData": "syscall", + "syscall.WSAEACCES": "syscall", + "syscall.WSAEnumProtocols": "syscall", + "syscall.WSAID_CONNECTEX": "syscall", + "syscall.WSAIoctl": "syscall", + "syscall.WSAPROTOCOL_LEN": "syscall", + "syscall.WSAProtocolChain": "syscall", + "syscall.WSAProtocolInfo": "syscall", + "syscall.WSARecv": "syscall", + "syscall.WSARecvFrom": "syscall", + "syscall.WSASYS_STATUS_LEN": "syscall", + "syscall.WSASend": "syscall", + "syscall.WSASendTo": "syscall", + "syscall.WSASendto": "syscall", + "syscall.WSAStartup": "syscall", + "syscall.WSTOPPED": "syscall", + "syscall.WTRAPPED": "syscall", + "syscall.WUNTRACED": "syscall", + "syscall.Wait4": "syscall", + "syscall.WaitForSingleObject": "syscall", + "syscall.WaitStatus": "syscall", + "syscall.Win32FileAttributeData": "syscall", + "syscall.Win32finddata": "syscall", + "syscall.Write": "syscall", + "syscall.WriteConsole": "syscall", + "syscall.WriteFile": "syscall", + "syscall.X509_ASN_ENCODING": "syscall", + "syscall.XCASE": "syscall", + "syscall.XP1_CONNECTIONLESS": "syscall", + "syscall.XP1_CONNECT_DATA": "syscall", + "syscall.XP1_DISCONNECT_DATA": "syscall", + "syscall.XP1_EXPEDITED_DATA": "syscall", + "syscall.XP1_GRACEFUL_CLOSE": "syscall", + "syscall.XP1_GUARANTEED_DELIVERY": "syscall", + "syscall.XP1_GUARANTEED_ORDER": "syscall", + "syscall.XP1_IFS_HANDLES": "syscall", + "syscall.XP1_MESSAGE_ORIENTED": "syscall", + "syscall.XP1_MULTIPOINT_CONTROL_PLANE": "syscall", + "syscall.XP1_MULTIPOINT_DATA_PLANE": "syscall", + "syscall.XP1_PARTIAL_MESSAGE": "syscall", + "syscall.XP1_PSEUDO_STREAM": "syscall", + "syscall.XP1_QOS_SUPPORTED": "syscall", + "syscall.XP1_SAN_SUPPORT_SDP": "syscall", + "syscall.XP1_SUPPORT_BROADCAST": "syscall", + "syscall.XP1_SUPPORT_MULTIPOINT": "syscall", + "syscall.XP1_UNI_RECV": "syscall", + "syscall.XP1_UNI_SEND": "syscall", + "syslog.Dial": "log/syslog", + "syslog.LOG_ALERT": "log/syslog", + "syslog.LOG_AUTH": "log/syslog", + "syslog.LOG_AUTHPRIV": "log/syslog", + "syslog.LOG_CRIT": "log/syslog", + "syslog.LOG_CRON": "log/syslog", + "syslog.LOG_DAEMON": "log/syslog", + "syslog.LOG_DEBUG": "log/syslog", + "syslog.LOG_EMERG": "log/syslog", + "syslog.LOG_ERR": "log/syslog", + "syslog.LOG_FTP": "log/syslog", + "syslog.LOG_INFO": "log/syslog", + "syslog.LOG_KERN": "log/syslog", + "syslog.LOG_LOCAL0": "log/syslog", + "syslog.LOG_LOCAL1": "log/syslog", + "syslog.LOG_LOCAL2": "log/syslog", + "syslog.LOG_LOCAL3": "log/syslog", + "syslog.LOG_LOCAL4": "log/syslog", + "syslog.LOG_LOCAL5": "log/syslog", + "syslog.LOG_LOCAL6": "log/syslog", + "syslog.LOG_LOCAL7": "log/syslog", + "syslog.LOG_LPR": "log/syslog", + "syslog.LOG_MAIL": "log/syslog", + "syslog.LOG_NEWS": "log/syslog", + "syslog.LOG_NOTICE": "log/syslog", + "syslog.LOG_SYSLOG": "log/syslog", + "syslog.LOG_USER": "log/syslog", + "syslog.LOG_UUCP": "log/syslog", + "syslog.LOG_WARNING": "log/syslog", + "syslog.New": "log/syslog", + "syslog.NewLogger": "log/syslog", + "syslog.Priority": "log/syslog", + "syslog.Writer": "log/syslog", + "tabwriter.AlignRight": "text/tabwriter", + "tabwriter.Debug": "text/tabwriter", + "tabwriter.DiscardEmptyColumns": "text/tabwriter", + "tabwriter.Escape": "text/tabwriter", + "tabwriter.FilterHTML": "text/tabwriter", + "tabwriter.NewWriter": "text/tabwriter", + "tabwriter.StripEscape": "text/tabwriter", + "tabwriter.TabIndent": "text/tabwriter", + "tabwriter.Writer": "text/tabwriter", + "tar.ErrFieldTooLong": "archive/tar", + "tar.ErrHeader": "archive/tar", + "tar.ErrWriteAfterClose": "archive/tar", + "tar.ErrWriteTooLong": "archive/tar", + "tar.FileInfoHeader": "archive/tar", + "tar.Header": "archive/tar", + "tar.NewReader": "archive/tar", + "tar.NewWriter": "archive/tar", + "tar.Reader": "archive/tar", + "tar.TypeBlock": "archive/tar", + "tar.TypeChar": "archive/tar", + "tar.TypeCont": "archive/tar", + "tar.TypeDir": "archive/tar", + "tar.TypeFifo": "archive/tar", + "tar.TypeGNULongLink": "archive/tar", + "tar.TypeGNULongName": "archive/tar", + "tar.TypeLink": "archive/tar", + "tar.TypeReg": "archive/tar", + "tar.TypeRegA": "archive/tar", + "tar.TypeSymlink": "archive/tar", + "tar.TypeXGlobalHeader": "archive/tar", + "tar.TypeXHeader": "archive/tar", + "tar.Writer": "archive/tar", + "template.CSS": "html/template", + "template.ErrAmbigContext": "html/template", + "template.ErrBadHTML": "html/template", + "template.ErrBranchEnd": "html/template", + "template.ErrEndContext": "html/template", + "template.ErrNoSuchTemplate": "html/template", + "template.ErrOutputContext": "html/template", + "template.ErrPartialCharset": "html/template", + "template.ErrPartialEscape": "html/template", + "template.ErrRangeLoopReentry": "html/template", + "template.ErrSlashAmbig": "html/template", + "template.Error": "html/template", + "template.ErrorCode": "html/template", + // "template.FuncMap" is ambiguous + "template.HTML": "html/template", + "template.HTMLAttr": "html/template", + // "template.HTMLEscape" is ambiguous + // "template.HTMLEscapeString" is ambiguous + // "template.HTMLEscaper" is ambiguous + "template.JS": "html/template", + // "template.JSEscape" is ambiguous + // "template.JSEscapeString" is ambiguous + // "template.JSEscaper" is ambiguous + "template.JSStr": "html/template", + // "template.Must" is ambiguous + // "template.New" is ambiguous + "template.OK": "html/template", + // "template.ParseFiles" is ambiguous + // "template.ParseGlob" is ambiguous + // "template.Template" is ambiguous + "template.URL": "html/template", + // "template.URLQueryEscaper" is ambiguous + "testing.AllocsPerRun": "testing", + "testing.B": "testing", + "testing.Benchmark": "testing", + "testing.BenchmarkResult": "testing", + "testing.Cover": "testing", + "testing.CoverBlock": "testing", + "testing.InternalBenchmark": "testing", + "testing.InternalExample": "testing", + "testing.InternalTest": "testing", + "testing.Main": "testing", + "testing.RegisterCover": "testing", + "testing.RunBenchmarks": "testing", + "testing.RunExamples": "testing", + "testing.RunTests": "testing", + "testing.Short": "testing", + "testing.T": "testing", + "testing.Verbose": "testing", + "textproto.CanonicalMIMEHeaderKey": "net/textproto", + "textproto.Conn": "net/textproto", + "textproto.Dial": "net/textproto", + "textproto.Error": "net/textproto", + "textproto.MIMEHeader": "net/textproto", + "textproto.NewConn": "net/textproto", + "textproto.NewReader": "net/textproto", + "textproto.NewWriter": "net/textproto", + "textproto.Pipeline": "net/textproto", + "textproto.ProtocolError": "net/textproto", + "textproto.Reader": "net/textproto", + "textproto.TrimBytes": "net/textproto", + "textproto.TrimString": "net/textproto", + "textproto.Writer": "net/textproto", + "time.ANSIC": "time", + "time.After": "time", + "time.AfterFunc": "time", + "time.April": "time", + "time.August": "time", + "time.Date": "time", + "time.December": "time", + "time.Duration": "time", + "time.February": "time", + "time.FixedZone": "time", + "time.Friday": "time", + "time.Hour": "time", + "time.January": "time", + "time.July": "time", + "time.June": "time", + "time.Kitchen": "time", + "time.LoadLocation": "time", + "time.Local": "time", + "time.Location": "time", + "time.March": "time", + "time.May": "time", + "time.Microsecond": "time", + "time.Millisecond": "time", + "time.Minute": "time", + "time.Monday": "time", + "time.Month": "time", + "time.Nanosecond": "time", + "time.NewTicker": "time", + "time.NewTimer": "time", + "time.November": "time", + "time.Now": "time", + "time.October": "time", + "time.Parse": "time", + "time.ParseDuration": "time", + "time.ParseError": "time", + "time.ParseInLocation": "time", + "time.RFC1123": "time", + "time.RFC1123Z": "time", + "time.RFC3339": "time", + "time.RFC3339Nano": "time", + "time.RFC822": "time", + "time.RFC822Z": "time", + "time.RFC850": "time", + "time.RubyDate": "time", + "time.Saturday": "time", + "time.Second": "time", + "time.September": "time", + "time.Since": "time", + "time.Sleep": "time", + "time.Stamp": "time", + "time.StampMicro": "time", + "time.StampMilli": "time", + "time.StampNano": "time", + "time.Sunday": "time", + "time.Thursday": "time", + "time.Tick": "time", + "time.Ticker": "time", + "time.Time": "time", + "time.Timer": "time", + "time.Tuesday": "time", + "time.UTC": "time", + "time.Unix": "time", + "time.UnixDate": "time", + "time.Wednesday": "time", + "time.Weekday": "time", + "tls.Certificate": "crypto/tls", + "tls.Client": "crypto/tls", + "tls.ClientAuthType": "crypto/tls", + "tls.Config": "crypto/tls", + "tls.Conn": "crypto/tls", + "tls.ConnectionState": "crypto/tls", + "tls.Dial": "crypto/tls", + "tls.Listen": "crypto/tls", + "tls.LoadX509KeyPair": "crypto/tls", + "tls.NewListener": "crypto/tls", + "tls.NoClientCert": "crypto/tls", + "tls.RequestClientCert": "crypto/tls", + "tls.RequireAndVerifyClientCert": "crypto/tls", + "tls.RequireAnyClientCert": "crypto/tls", + "tls.Server": "crypto/tls", + "tls.TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA": "crypto/tls", + "tls.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256": "crypto/tls", + "tls.TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA": "crypto/tls", + "tls.TLS_ECDHE_ECDSA_WITH_RC4_128_SHA": "crypto/tls", + "tls.TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA": "crypto/tls", + "tls.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA": "crypto/tls", + "tls.TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256": "crypto/tls", + "tls.TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA": "crypto/tls", + "tls.TLS_ECDHE_RSA_WITH_RC4_128_SHA": "crypto/tls", + "tls.TLS_RSA_WITH_3DES_EDE_CBC_SHA": "crypto/tls", + "tls.TLS_RSA_WITH_AES_128_CBC_SHA": "crypto/tls", + "tls.TLS_RSA_WITH_AES_256_CBC_SHA": "crypto/tls", + "tls.TLS_RSA_WITH_RC4_128_SHA": "crypto/tls", + "tls.VerifyClientCertIfGiven": "crypto/tls", + "tls.VersionSSL30": "crypto/tls", + "tls.VersionTLS10": "crypto/tls", + "tls.VersionTLS11": "crypto/tls", + "tls.VersionTLS12": "crypto/tls", + "tls.X509KeyPair": "crypto/tls", + "token.ADD": "go/token", + "token.ADD_ASSIGN": "go/token", + "token.AND": "go/token", + "token.AND_ASSIGN": "go/token", + "token.AND_NOT": "go/token", + "token.AND_NOT_ASSIGN": "go/token", + "token.ARROW": "go/token", + "token.ASSIGN": "go/token", + "token.BREAK": "go/token", + "token.CASE": "go/token", + "token.CHAN": "go/token", + "token.CHAR": "go/token", + "token.COLON": "go/token", + "token.COMMA": "go/token", + "token.COMMENT": "go/token", + "token.CONST": "go/token", + "token.CONTINUE": "go/token", + "token.DEC": "go/token", + "token.DEFAULT": "go/token", + "token.DEFER": "go/token", + "token.DEFINE": "go/token", + "token.ELLIPSIS": "go/token", + "token.ELSE": "go/token", + "token.EOF": "go/token", + "token.EQL": "go/token", + "token.FALLTHROUGH": "go/token", + "token.FLOAT": "go/token", + "token.FOR": "go/token", + "token.FUNC": "go/token", + "token.File": "go/token", + "token.FileSet": "go/token", + "token.GEQ": "go/token", + "token.GO": "go/token", + "token.GOTO": "go/token", + "token.GTR": "go/token", + "token.HighestPrec": "go/token", + "token.IDENT": "go/token", + "token.IF": "go/token", + "token.ILLEGAL": "go/token", + "token.IMAG": "go/token", + "token.IMPORT": "go/token", + "token.INC": "go/token", + "token.INT": "go/token", + "token.INTERFACE": "go/token", + "token.LAND": "go/token", + "token.LBRACE": "go/token", + "token.LBRACK": "go/token", + "token.LEQ": "go/token", + "token.LOR": "go/token", + "token.LPAREN": "go/token", + "token.LSS": "go/token", + "token.Lookup": "go/token", + "token.LowestPrec": "go/token", + "token.MAP": "go/token", + "token.MUL": "go/token", + "token.MUL_ASSIGN": "go/token", + "token.NEQ": "go/token", + "token.NOT": "go/token", + "token.NewFileSet": "go/token", + "token.NoPos": "go/token", + "token.OR": "go/token", + "token.OR_ASSIGN": "go/token", + "token.PACKAGE": "go/token", + "token.PERIOD": "go/token", + "token.Pos": "go/token", + "token.Position": "go/token", + "token.QUO": "go/token", + "token.QUO_ASSIGN": "go/token", + "token.RANGE": "go/token", + "token.RBRACE": "go/token", + "token.RBRACK": "go/token", + "token.REM": "go/token", + "token.REM_ASSIGN": "go/token", + "token.RETURN": "go/token", + "token.RPAREN": "go/token", + "token.SELECT": "go/token", + "token.SEMICOLON": "go/token", + "token.SHL": "go/token", + "token.SHL_ASSIGN": "go/token", + "token.SHR": "go/token", + "token.SHR_ASSIGN": "go/token", + "token.STRING": "go/token", + "token.STRUCT": "go/token", + "token.SUB": "go/token", + "token.SUB_ASSIGN": "go/token", + "token.SWITCH": "go/token", + "token.TYPE": "go/token", + "token.Token": "go/token", + "token.UnaryPrec": "go/token", + "token.VAR": "go/token", + "token.XOR": "go/token", + "token.XOR_ASSIGN": "go/token", + "unicode.ASCII_Hex_Digit": "unicode", + "unicode.Arabic": "unicode", + "unicode.Armenian": "unicode", + "unicode.Avestan": "unicode", + "unicode.AzeriCase": "unicode", + "unicode.Balinese": "unicode", + "unicode.Bamum": "unicode", + "unicode.Batak": "unicode", + "unicode.Bengali": "unicode", + "unicode.Bidi_Control": "unicode", + "unicode.Bopomofo": "unicode", + "unicode.Brahmi": "unicode", + "unicode.Braille": "unicode", + "unicode.Buginese": "unicode", + "unicode.Buhid": "unicode", + "unicode.C": "unicode", + "unicode.Canadian_Aboriginal": "unicode", + "unicode.Carian": "unicode", + "unicode.CaseRange": "unicode", + "unicode.CaseRanges": "unicode", + "unicode.Categories": "unicode", + "unicode.Cc": "unicode", + "unicode.Cf": "unicode", + "unicode.Chakma": "unicode", + "unicode.Cham": "unicode", + "unicode.Cherokee": "unicode", + "unicode.Co": "unicode", + "unicode.Common": "unicode", + "unicode.Coptic": "unicode", + "unicode.Cs": "unicode", + "unicode.Cuneiform": "unicode", + "unicode.Cypriot": "unicode", + "unicode.Cyrillic": "unicode", + "unicode.Dash": "unicode", + "unicode.Deprecated": "unicode", + "unicode.Deseret": "unicode", + "unicode.Devanagari": "unicode", + "unicode.Diacritic": "unicode", + "unicode.Digit": "unicode", + "unicode.Egyptian_Hieroglyphs": "unicode", + "unicode.Ethiopic": "unicode", + "unicode.Extender": "unicode", + "unicode.FoldCategory": "unicode", + "unicode.FoldScript": "unicode", + "unicode.Georgian": "unicode", + "unicode.Glagolitic": "unicode", + "unicode.Gothic": "unicode", + "unicode.GraphicRanges": "unicode", + "unicode.Greek": "unicode", + "unicode.Gujarati": "unicode", + "unicode.Gurmukhi": "unicode", + "unicode.Han": "unicode", + "unicode.Hangul": "unicode", + "unicode.Hanunoo": "unicode", + "unicode.Hebrew": "unicode", + "unicode.Hex_Digit": "unicode", + "unicode.Hiragana": "unicode", + "unicode.Hyphen": "unicode", + "unicode.IDS_Binary_Operator": "unicode", + "unicode.IDS_Trinary_Operator": "unicode", + "unicode.Ideographic": "unicode", + "unicode.Imperial_Aramaic": "unicode", + "unicode.In": "unicode", + "unicode.Inherited": "unicode", + "unicode.Inscriptional_Pahlavi": "unicode", + "unicode.Inscriptional_Parthian": "unicode", + "unicode.Is": "unicode", + "unicode.IsControl": "unicode", + "unicode.IsDigit": "unicode", + "unicode.IsGraphic": "unicode", + "unicode.IsLetter": "unicode", + "unicode.IsLower": "unicode", + "unicode.IsMark": "unicode", + "unicode.IsNumber": "unicode", + "unicode.IsOneOf": "unicode", + "unicode.IsPrint": "unicode", + "unicode.IsPunct": "unicode", + "unicode.IsSpace": "unicode", + "unicode.IsSymbol": "unicode", + "unicode.IsTitle": "unicode", + "unicode.IsUpper": "unicode", + "unicode.Javanese": "unicode", + "unicode.Join_Control": "unicode", + "unicode.Kaithi": "unicode", + "unicode.Kannada": "unicode", + "unicode.Katakana": "unicode", + "unicode.Kayah_Li": "unicode", + "unicode.Kharoshthi": "unicode", + "unicode.Khmer": "unicode", + "unicode.L": "unicode", + "unicode.Lao": "unicode", + "unicode.Latin": "unicode", + "unicode.Lepcha": "unicode", + "unicode.Letter": "unicode", + "unicode.Limbu": "unicode", + "unicode.Linear_B": "unicode", + "unicode.Lisu": "unicode", + "unicode.Ll": "unicode", + "unicode.Lm": "unicode", + "unicode.Lo": "unicode", + "unicode.Logical_Order_Exception": "unicode", + "unicode.Lower": "unicode", + "unicode.LowerCase": "unicode", + "unicode.Lt": "unicode", + "unicode.Lu": "unicode", + "unicode.Lycian": "unicode", + "unicode.Lydian": "unicode", + "unicode.M": "unicode", + "unicode.Malayalam": "unicode", + "unicode.Mandaic": "unicode", + "unicode.Mark": "unicode", + "unicode.MaxASCII": "unicode", + "unicode.MaxCase": "unicode", + "unicode.MaxLatin1": "unicode", + "unicode.MaxRune": "unicode", + "unicode.Mc": "unicode", + "unicode.Me": "unicode", + "unicode.Meetei_Mayek": "unicode", + "unicode.Meroitic_Cursive": "unicode", + "unicode.Meroitic_Hieroglyphs": "unicode", + "unicode.Miao": "unicode", + "unicode.Mn": "unicode", + "unicode.Mongolian": "unicode", + "unicode.Myanmar": "unicode", + "unicode.N": "unicode", + "unicode.Nd": "unicode", + "unicode.New_Tai_Lue": "unicode", + "unicode.Nko": "unicode", + "unicode.Nl": "unicode", + "unicode.No": "unicode", + "unicode.Noncharacter_Code_Point": "unicode", + "unicode.Number": "unicode", + "unicode.Ogham": "unicode", + "unicode.Ol_Chiki": "unicode", + "unicode.Old_Italic": "unicode", + "unicode.Old_Persian": "unicode", + "unicode.Old_South_Arabian": "unicode", + "unicode.Old_Turkic": "unicode", + "unicode.Oriya": "unicode", + "unicode.Osmanya": "unicode", + "unicode.Other": "unicode", + "unicode.Other_Alphabetic": "unicode", + "unicode.Other_Default_Ignorable_Code_Point": "unicode", + "unicode.Other_Grapheme_Extend": "unicode", + "unicode.Other_ID_Continue": "unicode", + "unicode.Other_ID_Start": "unicode", + "unicode.Other_Lowercase": "unicode", + "unicode.Other_Math": "unicode", + "unicode.Other_Uppercase": "unicode", + "unicode.P": "unicode", + "unicode.Pattern_Syntax": "unicode", + "unicode.Pattern_White_Space": "unicode", + "unicode.Pc": "unicode", + "unicode.Pd": "unicode", + "unicode.Pe": "unicode", + "unicode.Pf": "unicode", + "unicode.Phags_Pa": "unicode", + "unicode.Phoenician": "unicode", + "unicode.Pi": "unicode", + "unicode.Po": "unicode", + "unicode.PrintRanges": "unicode", + "unicode.Properties": "unicode", + "unicode.Ps": "unicode", + "unicode.Punct": "unicode", + "unicode.Quotation_Mark": "unicode", + "unicode.Radical": "unicode", + "unicode.Range16": "unicode", + "unicode.Range32": "unicode", + "unicode.RangeTable": "unicode", + "unicode.Rejang": "unicode", + "unicode.ReplacementChar": "unicode", + "unicode.Runic": "unicode", + "unicode.S": "unicode", + "unicode.STerm": "unicode", + "unicode.Samaritan": "unicode", + "unicode.Saurashtra": "unicode", + "unicode.Sc": "unicode", + "unicode.Scripts": "unicode", + "unicode.Sharada": "unicode", + "unicode.Shavian": "unicode", + "unicode.SimpleFold": "unicode", + "unicode.Sinhala": "unicode", + "unicode.Sk": "unicode", + "unicode.Sm": "unicode", + "unicode.So": "unicode", + "unicode.Soft_Dotted": "unicode", + "unicode.Sora_Sompeng": "unicode", + "unicode.Space": "unicode", + "unicode.SpecialCase": "unicode", + "unicode.Sundanese": "unicode", + "unicode.Syloti_Nagri": "unicode", + "unicode.Symbol": "unicode", + "unicode.Syriac": "unicode", + "unicode.Tagalog": "unicode", + "unicode.Tagbanwa": "unicode", + "unicode.Tai_Le": "unicode", + "unicode.Tai_Tham": "unicode", + "unicode.Tai_Viet": "unicode", + "unicode.Takri": "unicode", + "unicode.Tamil": "unicode", + "unicode.Telugu": "unicode", + "unicode.Terminal_Punctuation": "unicode", + "unicode.Thaana": "unicode", + "unicode.Thai": "unicode", + "unicode.Tibetan": "unicode", + "unicode.Tifinagh": "unicode", + "unicode.Title": "unicode", + "unicode.TitleCase": "unicode", + "unicode.To": "unicode", + "unicode.ToLower": "unicode", + "unicode.ToTitle": "unicode", + "unicode.ToUpper": "unicode", + "unicode.TurkishCase": "unicode", + "unicode.Ugaritic": "unicode", + "unicode.Unified_Ideograph": "unicode", + "unicode.Upper": "unicode", + "unicode.UpperCase": "unicode", + "unicode.UpperLower": "unicode", + "unicode.Vai": "unicode", + "unicode.Variation_Selector": "unicode", + "unicode.Version": "unicode", + "unicode.White_Space": "unicode", + "unicode.Yi": "unicode", + "unicode.Z": "unicode", + "unicode.Zl": "unicode", + "unicode.Zp": "unicode", + "unicode.Zs": "unicode", + "url.Error": "net/url", + "url.EscapeError": "net/url", + "url.Parse": "net/url", + "url.ParseQuery": "net/url", + "url.ParseRequestURI": "net/url", + "url.QueryEscape": "net/url", + "url.QueryUnescape": "net/url", + "url.URL": "net/url", + "url.User": "net/url", + "url.UserPassword": "net/url", + "url.Userinfo": "net/url", + "url.Values": "net/url", + "user.Current": "os/user", + "user.Lookup": "os/user", + "user.LookupId": "os/user", + "user.UnknownUserError": "os/user", + "user.UnknownUserIdError": "os/user", + "user.User": "os/user", + "utf16.Decode": "unicode/utf16", + "utf16.DecodeRune": "unicode/utf16", + "utf16.Encode": "unicode/utf16", + "utf16.EncodeRune": "unicode/utf16", + "utf16.IsSurrogate": "unicode/utf16", + "utf8.DecodeLastRune": "unicode/utf8", + "utf8.DecodeLastRuneInString": "unicode/utf8", + "utf8.DecodeRune": "unicode/utf8", + "utf8.DecodeRuneInString": "unicode/utf8", + "utf8.EncodeRune": "unicode/utf8", + "utf8.FullRune": "unicode/utf8", + "utf8.FullRuneInString": "unicode/utf8", + "utf8.MaxRune": "unicode/utf8", + "utf8.RuneCount": "unicode/utf8", + "utf8.RuneCountInString": "unicode/utf8", + "utf8.RuneError": "unicode/utf8", + "utf8.RuneLen": "unicode/utf8", + "utf8.RuneSelf": "unicode/utf8", + "utf8.RuneStart": "unicode/utf8", + "utf8.UTFMax": "unicode/utf8", + "utf8.Valid": "unicode/utf8", + "utf8.ValidRune": "unicode/utf8", + "utf8.ValidString": "unicode/utf8", + "x509.CANotAuthorizedForThisName": "crypto/x509", + "x509.CertPool": "crypto/x509", + "x509.Certificate": "crypto/x509", + "x509.CertificateInvalidError": "crypto/x509", + "x509.ConstraintViolationError": "crypto/x509", + "x509.CreateCertificate": "crypto/x509", + "x509.DSA": "crypto/x509", + "x509.DSAWithSHA1": "crypto/x509", + "x509.DSAWithSHA256": "crypto/x509", + "x509.DecryptPEMBlock": "crypto/x509", + "x509.ECDSA": "crypto/x509", + "x509.ECDSAWithSHA1": "crypto/x509", + "x509.ECDSAWithSHA256": "crypto/x509", + "x509.ECDSAWithSHA384": "crypto/x509", + "x509.ECDSAWithSHA512": "crypto/x509", + "x509.EncryptPEMBlock": "crypto/x509", + "x509.ErrUnsupportedAlgorithm": "crypto/x509", + "x509.Expired": "crypto/x509", + "x509.ExtKeyUsage": "crypto/x509", + "x509.ExtKeyUsageAny": "crypto/x509", + "x509.ExtKeyUsageClientAuth": "crypto/x509", + "x509.ExtKeyUsageCodeSigning": "crypto/x509", + "x509.ExtKeyUsageEmailProtection": "crypto/x509", + "x509.ExtKeyUsageIPSECEndSystem": "crypto/x509", + "x509.ExtKeyUsageIPSECTunnel": "crypto/x509", + "x509.ExtKeyUsageIPSECUser": "crypto/x509", + "x509.ExtKeyUsageMicrosoftServerGatedCrypto": "crypto/x509", + "x509.ExtKeyUsageNetscapeServerGatedCrypto": "crypto/x509", + "x509.ExtKeyUsageOCSPSigning": "crypto/x509", + "x509.ExtKeyUsageServerAuth": "crypto/x509", + "x509.ExtKeyUsageTimeStamping": "crypto/x509", + "x509.HostnameError": "crypto/x509", + "x509.IncompatibleUsage": "crypto/x509", + "x509.IncorrectPasswordError": "crypto/x509", + "x509.InvalidReason": "crypto/x509", + "x509.IsEncryptedPEMBlock": "crypto/x509", + "x509.KeyUsage": "crypto/x509", + "x509.KeyUsageCRLSign": "crypto/x509", + "x509.KeyUsageCertSign": "crypto/x509", + "x509.KeyUsageContentCommitment": "crypto/x509", + "x509.KeyUsageDataEncipherment": "crypto/x509", + "x509.KeyUsageDecipherOnly": "crypto/x509", + "x509.KeyUsageDigitalSignature": "crypto/x509", + "x509.KeyUsageEncipherOnly": "crypto/x509", + "x509.KeyUsageKeyAgreement": "crypto/x509", + "x509.KeyUsageKeyEncipherment": "crypto/x509", + "x509.MD2WithRSA": "crypto/x509", + "x509.MD5WithRSA": "crypto/x509", + "x509.MarshalECPrivateKey": "crypto/x509", + "x509.MarshalPKCS1PrivateKey": "crypto/x509", + "x509.MarshalPKIXPublicKey": "crypto/x509", + "x509.NewCertPool": "crypto/x509", + "x509.NotAuthorizedToSign": "crypto/x509", + "x509.PEMCipher": "crypto/x509", + "x509.PEMCipher3DES": "crypto/x509", + "x509.PEMCipherAES128": "crypto/x509", + "x509.PEMCipherAES192": "crypto/x509", + "x509.PEMCipherAES256": "crypto/x509", + "x509.PEMCipherDES": "crypto/x509", + "x509.ParseCRL": "crypto/x509", + "x509.ParseCertificate": "crypto/x509", + "x509.ParseCertificates": "crypto/x509", + "x509.ParseDERCRL": "crypto/x509", + "x509.ParseECPrivateKey": "crypto/x509", + "x509.ParsePKCS1PrivateKey": "crypto/x509", + "x509.ParsePKCS8PrivateKey": "crypto/x509", + "x509.ParsePKIXPublicKey": "crypto/x509", + "x509.PublicKeyAlgorithm": "crypto/x509", + "x509.RSA": "crypto/x509", + "x509.SHA1WithRSA": "crypto/x509", + "x509.SHA256WithRSA": "crypto/x509", + "x509.SHA384WithRSA": "crypto/x509", + "x509.SHA512WithRSA": "crypto/x509", + "x509.SignatureAlgorithm": "crypto/x509", + "x509.SystemRootsError": "crypto/x509", + "x509.TooManyIntermediates": "crypto/x509", + "x509.UnhandledCriticalExtension": "crypto/x509", + "x509.UnknownAuthorityError": "crypto/x509", + "x509.UnknownPublicKeyAlgorithm": "crypto/x509", + "x509.UnknownSignatureAlgorithm": "crypto/x509", + "x509.VerifyOptions": "crypto/x509", + "xml.Attr": "encoding/xml", + "xml.CharData": "encoding/xml", + "xml.Comment": "encoding/xml", + "xml.CopyToken": "encoding/xml", + "xml.Decoder": "encoding/xml", + "xml.Directive": "encoding/xml", + "xml.Encoder": "encoding/xml", + "xml.EndElement": "encoding/xml", + "xml.Escape": "encoding/xml", + "xml.EscapeText": "encoding/xml", + "xml.HTMLAutoClose": "encoding/xml", + "xml.HTMLEntity": "encoding/xml", + "xml.Header": "encoding/xml", + "xml.Marshal": "encoding/xml", + "xml.MarshalIndent": "encoding/xml", + "xml.Marshaler": "encoding/xml", + "xml.MarshalerAttr": "encoding/xml", + "xml.Name": "encoding/xml", + "xml.NewDecoder": "encoding/xml", + "xml.NewEncoder": "encoding/xml", + "xml.ProcInst": "encoding/xml", + "xml.StartElement": "encoding/xml", + "xml.SyntaxError": "encoding/xml", + "xml.TagPathError": "encoding/xml", + "xml.Token": "encoding/xml", + "xml.Unmarshal": "encoding/xml", + "xml.UnmarshalError": "encoding/xml", + "xml.Unmarshaler": "encoding/xml", + "xml.UnmarshalerAttr": "encoding/xml", + "xml.UnsupportedTypeError": "encoding/xml", + "zip.Compressor": "archive/zip", + "zip.Decompressor": "archive/zip", + "zip.Deflate": "archive/zip", + "zip.ErrAlgorithm": "archive/zip", + "zip.ErrChecksum": "archive/zip", + "zip.ErrFormat": "archive/zip", + "zip.File": "archive/zip", + "zip.FileHeader": "archive/zip", + "zip.FileInfoHeader": "archive/zip", + "zip.NewReader": "archive/zip", + "zip.NewWriter": "archive/zip", + "zip.OpenReader": "archive/zip", + "zip.ReadCloser": "archive/zip", + "zip.Reader": "archive/zip", + "zip.RegisterCompressor": "archive/zip", + "zip.RegisterDecompressor": "archive/zip", + "zip.Store": "archive/zip", + "zip.Writer": "archive/zip", + "zlib.BestCompression": "compress/zlib", + "zlib.BestSpeed": "compress/zlib", + "zlib.DefaultCompression": "compress/zlib", + "zlib.ErrChecksum": "compress/zlib", + "zlib.ErrDictionary": "compress/zlib", + "zlib.ErrHeader": "compress/zlib", + "zlib.NewReader": "compress/zlib", + "zlib.NewReaderDict": "compress/zlib", + "zlib.NewWriter": "compress/zlib", + "zlib.NewWriterLevel": "compress/zlib", + "zlib.NewWriterLevelDict": "compress/zlib", + "zlib.NoCompression": "compress/zlib", + "zlib.Writer": "compress/zlib", +} diff --git a/cmd/geth/monitorcmd.go b/cmd/geth/monitorcmd.go index a45d29b8f2..2f08f16758 100644 --- a/cmd/geth/monitorcmd.go +++ b/cmd/geth/monitorcmd.go @@ -165,7 +165,11 @@ func monitor(ctx *cli.Context) { // retrieveMetrics contacts the attached geth node and retrieves the entire set // of collected system metrics. func retrieveMetrics(xeth *rpc.Xeth) (map[string]interface{}, error) { - return xeth.Call("debug_metrics", []interface{}{true}) + reply, err := xeth.Call("debug_metrics", []interface{}{true}) + if err != nil { + return nil, err + } + return reply.(map[string]interface{}), nil } // resolveMetrics takes a list of input metric patterns, and resolves each to one diff --git a/rpc/api/db.go b/rpc/api/db.go index 0eddc410ed..7ca049e801 100644 --- a/rpc/api/db.go +++ b/rpc/api/db.go @@ -97,7 +97,10 @@ func (self *dbApi) GetString(req *shared.Request) (interface{}, error) { } ret, err := self.xeth.DbGet([]byte(args.Database + args.Key)) - return string(ret), err + if err != nil { + return nil, err + } + return string(ret), nil } func (self *dbApi) PutString(req *shared.Request) (interface{}, error) { diff --git a/rpc/api/debug.go b/rpc/api/debug.go index d325b17209..b3e96fa26f 100644 --- a/rpc/api/debug.go +++ b/rpc/api/debug.go @@ -138,7 +138,10 @@ func (self *debugApi) GetBlockRlp(req *shared.Request) (interface{}, error) { return nil, fmt.Errorf("block #%d not found", args.BlockNumber) } encoded, err := rlp.EncodeToBytes(block) - return fmt.Sprintf("%x", encoded), err + if err != nil { + return nil, err + } + return fmt.Sprintf("%x", encoded), nil } func (self *debugApi) SetHead(req *shared.Request) (interface{}, error) { diff --git a/rpc/api/personal.go b/rpc/api/personal.go index 1b0dea330a..fd78a757d5 100644 --- a/rpc/api/personal.go +++ b/rpc/api/personal.go @@ -101,7 +101,10 @@ func (self *personalApi) NewAccount(req *shared.Request) (interface{}, error) { am := self.ethereum.AccountManager() acc, err := am.NewAccount(args.Passphrase) - return acc.Address.Hex(), err + if err != nil { + return nil, err + } + return acc.Address.Hex(), nil } func (self *personalApi) UnlockAccount(req *shared.Request) (interface{}, error) { diff --git a/rpc/genapi.go b/rpc/genapi.go new file mode 100644 index 0000000000..508e075b97 --- /dev/null +++ b/rpc/genapi.go @@ -0,0 +1,805 @@ +package rpc + +import ( + "math/big" + + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/compiler" + "github.com/ethereum/go-ethereum/core/state" + "github.com/ethereum/go-ethereum/eth" + "github.com/ethereum/go-ethereum/rpc/api" + "github.com/ethereum/go-ethereum/rpc/comms" + "github.com/ethereum/go-ethereum/xeth" +) + +type GenApi struct { + Admin *Admin + Db *Db + Debug *Debug + Eth *Eth + Miner *Miner + Net *Net + Personal *Personal + Shh *Shh + Txpool *Txpool + Web3 *Web3 +} + +func NewGenApi(client comms.EthereumClient) *GenApi { + xeth := NewXeth(client) + + return &GenApi{ + Admin: &Admin{xeth}, + Db: &Db{xeth}, + Debug: &Debug{xeth}, + Eth: &Eth{xeth}, + Miner: &Miner{xeth}, + Net: &Net{xeth}, + Personal: &Personal{xeth}, + Shh: &Shh{xeth}, + Txpool: &Txpool{xeth}, + Web3: &Web3{xeth}, + } +} + +type Admin struct { + xeth *Xeth +} + +func (self *Admin) AddPeer(url string) (result bool, failure error) { + res, err := self.xeth.Call("admin_addPeer", []interface{}{url}) + if err != nil { + failure = err + return + } + return res.(bool), nil +} +func (self *Admin) ChainSyncStatus() (interface{}, error) { + return self.xeth.Call("admin_chainSyncStatus", nil) +} +func (self *Admin) Datadir() (interface{}, error) { + return self.xeth.Call("admin_datadir", nil) +} +func (self *Admin) EnableUserAgent() (result bool, failure error) { + res, err := self.xeth.Call("admin_enableUserAgent", nil) + if err != nil { + failure = err + return + } + return res.(bool), nil +} +func (self *Admin) ExportChain() (result bool, failure error) { + res, err := self.xeth.Call("admin_exportChain", nil) + if err != nil { + failure = err + return + } + return res.(bool), nil +} +func (self *Admin) GetContractInfo(contract string) (interface{}, error) { + return self.xeth.Call("admin_getContractInfo", []interface{}{contract}) +} +func (self *Admin) HttpGet(uri string, path string) (result string, failure error) { + res, err := self.xeth.Call("admin_httpGet", []interface{}{uri, path}) + if err != nil { + failure = err + return + } + return res.(string), nil +} +func (self *Admin) ImportChain() (result bool, failure error) { + res, err := self.xeth.Call("admin_importChain", nil) + if err != nil { + failure = err + return + } + return res.(bool), nil +} +func (self *Admin) NodeInfo() (result *eth.NodeInfo, failure error) { + res, err := self.xeth.Call("admin_nodeInfo", nil) + if err != nil { + failure = err + return + } + return res.(*eth.NodeInfo), nil +} +func (self *Admin) Peers() (result []*eth.PeerInfo, failure error) { + res, err := self.xeth.Call("admin_peers", nil) + if err != nil { + failure = err + return + } + for _, item := range res.([]interface{}) { + result = append(result, item.(*eth.PeerInfo)) + } + return +} +func (self *Admin) Register(sender string, address string, contentHashHex string) (result bool, failure error) { + res, err := self.xeth.Call("admin_register", []interface{}{sender, address, contentHashHex}) + if err != nil { + failure = err + return + } + return res.(bool), nil +} +func (self *Admin) RegisterUrl(sender string, contentHash string, url string) (result bool, failure error) { + res, err := self.xeth.Call("admin_registerUrl", []interface{}{sender, contentHash, url}) + if err != nil { + failure = err + return + } + return res.(bool), nil +} +func (self *Admin) SaveInfo(contractInfo compiler.ContractInfo, filename string) (result string, failure error) { + res, err := self.xeth.Call("admin_saveInfo", []interface{}{contractInfo, filename}) + if err != nil { + failure = err + return + } + return res.(string), nil +} +func (self *Admin) SetGlobalRegistrar(nameReg string, contractAddress string) (interface{}, error) { + return self.xeth.Call("admin_setGlobalRegistrar", []interface{}{nameReg, contractAddress}) +} +func (self *Admin) SetHashReg(hashReg string, sender string) (interface{}, error) { + return self.xeth.Call("admin_setHashReg", []interface{}{hashReg, sender}) +} +func (self *Admin) SetSolc(path string) (result string, failure error) { + res, err := self.xeth.Call("admin_setSolc", []interface{}{path}) + if err != nil { + failure = err + return + } + return res.(string), nil +} +func (self *Admin) SetUrlHint(urlHint string, sender string) (interface{}, error) { + return self.xeth.Call("admin_setUrlHint", []interface{}{urlHint, sender}) +} +func (self *Admin) Sleep(s int) (interface{}, error) { + return self.xeth.Call("admin_sleep", []interface{}{s}) +} +func (self *Admin) SleepBlocks(n int64, timeout int64) (result uint64, failure error) { + res, err := self.xeth.Call("admin_sleepBlocks", []interface{}{n, timeout}) + if err != nil { + failure = err + return + } + return res.(uint64), nil +} +func (self *Admin) StartNatSpec() (result bool, failure error) { + res, err := self.xeth.Call("admin_startNatSpec", nil) + if err != nil { + failure = err + return + } + return res.(bool), nil +} +func (self *Admin) StartRPC(listenAddress string, listenPort uint, corsDomain string, apis string) (result bool, failure error) { + res, err := self.xeth.Call("admin_startRPC", []interface{}{listenAddress, listenPort, corsDomain, apis}) + if err != nil { + failure = err + return + } + return res.(bool), nil +} +func (self *Admin) StopNatSpec() (result bool, failure error) { + res, err := self.xeth.Call("admin_stopNatSpec", nil) + if err != nil { + failure = err + return + } + return res.(bool), nil +} +func (self *Admin) StopRPC() (result bool, failure error) { + res, err := self.xeth.Call("admin_stopRPC", nil) + if err != nil { + failure = err + return + } + return res.(bool), nil +} +func (self *Admin) Verbosity(level int) (result bool, failure error) { + res, err := self.xeth.Call("admin_verbosity", []interface{}{level}) + if err != nil { + failure = err + return + } + return res.(bool), nil +} + +type Db struct { + xeth *Xeth +} + +func (self *Db) GetHex() (result []byte, failure error) { + res, err := self.xeth.Call("db_getHex", nil) + if err != nil { + failure = err + return + } + return res.([]byte), nil +} +func (self *Db) GetString() (result string, failure error) { + res, err := self.xeth.Call("db_getString", nil) + if err != nil { + failure = err + return + } + return res.(string), nil +} +func (self *Db) PutHex() (result bool, failure error) { + res, err := self.xeth.Call("db_putHex", nil) + if err != nil { + failure = err + return + } + return res.(bool), nil +} +func (self *Db) PutString() (result bool, failure error) { + res, err := self.xeth.Call("db_putString", nil) + if err != nil { + failure = err + return + } + return res.(bool), nil +} + +type Debug struct { + xeth *Xeth +} + +func (self *Debug) DumpBlock() (result state.World, failure error) { + res, err := self.xeth.Call("debug_dumpBlock", nil) + if err != nil { + failure = err + return + } + return res.(state.World), nil +} +func (self *Debug) GetBlockRlp() (interface{}, error) { + return self.xeth.Call("debug_getBlockRlp", nil) +} +func (self *Debug) Metrics(raw bool) (interface{}, error) { + return self.xeth.Call("debug_metrics", []interface{}{raw}) +} +func (self *Debug) PrintBlock() (interface{}, error) { + return self.xeth.Call("debug_printBlock", nil) +} +func (self *Debug) ProcessBlock() (result bool, failure error) { + res, err := self.xeth.Call("debug_processBlock", nil) + if err != nil { + failure = err + return + } + return res.(bool), nil +} +func (self *Debug) SeedHash() (interface{}, error) { + return self.xeth.Call("debug_seedHash", nil) +} +func (self *Debug) SetHead() (interface{}, error) { + return self.xeth.Call("debug_setHead", nil) +} + +type Eth struct { + xeth *Xeth +} + +func (self *Eth) Accounts() (result []string, failure error) { + res, err := self.xeth.Call("eth_accounts", nil) + if err != nil { + failure = err + return + } + for _, item := range res.([]interface{}) { + result = append(result, item.(string)) + } + return +} +func (self *Eth) BlockNumber() (result int64, failure error) { + res, err := self.xeth.Call("eth_blockNumber", nil) + if err != nil { + failure = err + return + } + return new(big.Int).SetBytes(common.FromHex(res.(string))).Int64(), nil +} +func (self *Eth) Call(from string, to string, value *big.Int, gas *big.Int, gasPrice *big.Int, data string, blockNumber int64) (result []byte, failure error) { + res, err := self.xeth.Call("eth_call", []interface{}{from, to, value, gas, gasPrice, data, blockNumber}) + if err != nil { + failure = err + return + } + return res.([]byte), nil +} +func (self *Eth) Coinbase() (result []byte, failure error) { + res, err := self.xeth.Call("eth_coinbase", nil) + if err != nil { + failure = err + return + } + return res.([]byte), nil +} +func (self *Eth) CompileSolidity() (interface{}, error) { + return self.xeth.Call("eth_compileSolidity", nil) +} +func (self *Eth) EstimateGas() (result int64, failure error) { + res, err := self.xeth.Call("eth_estimateGas", nil) + if err != nil { + failure = err + return + } + return new(big.Int).SetBytes(common.FromHex(res.(string))).Int64(), nil +} +func (self *Eth) Flush() (interface{}, error) { + return self.xeth.Call("eth_flush", nil) +} +func (self *Eth) GasPrice(price string) (result int64, failure error) { + res, err := self.xeth.Call("eth_gasPrice", []interface{}{price}) + if err != nil { + failure = err + return + } + return new(big.Int).SetBytes(common.FromHex(res.(string))).Int64(), nil +} +func (self *Eth) GetBalance(address string, blockNumber int64) (result string, failure error) { + res, err := self.xeth.Call("eth_getBalance", []interface{}{address, blockNumber}) + if err != nil { + failure = err + return + } + return res.(string), nil +} +func (self *Eth) GetBlockByHash(blockHash string, includeTxs bool) (result *api.BlockRes, failure error) { + res, err := self.xeth.Call("eth_getBlockByHash", []interface{}{blockHash, includeTxs}) + if err != nil { + failure = err + return + } + return res.(*api.BlockRes), nil +} +func (self *Eth) GetBlockByNumber(blockNumber int64, includeTxs bool) (interface{}, error) { + return self.xeth.Call("eth_getBlockByNumber", []interface{}{blockNumber, includeTxs}) +} +func (self *Eth) GetBlockTransactionCountByHash() (interface{}, error) { + return self.xeth.Call("eth_getBlockTransactionCountByHash", nil) +} +func (self *Eth) GetBlockTransactionCountByNumber() (interface{}, error) { + return self.xeth.Call("eth_getBlockTransactionCountByNumber", nil) +} +func (self *Eth) GetCode(address string, blockNumber int64) (result []byte, failure error) { + res, err := self.xeth.Call("eth_getCode", []interface{}{address, blockNumber}) + if err != nil { + failure = err + return + } + return res.([]byte), nil +} +func (self *Eth) GetCompilers() (interface{}, error) { + return self.xeth.Call("eth_getCompilers", nil) +} +func (self *Eth) GetData(address string, blockNumber int64) (result []byte, failure error) { + res, err := self.xeth.Call("eth_getData", []interface{}{address, blockNumber}) + if err != nil { + failure = err + return + } + return res.([]byte), nil +} +func (self *Eth) GetFilterChanges() (interface{}, error) { + return self.xeth.Call("eth_getFilterChanges", nil) +} +func (self *Eth) GetFilterLogs() (result []api.LogRes, failure error) { + res, err := self.xeth.Call("eth_getFilterLogs", nil) + if err != nil { + failure = err + return + } + for _, item := range res.([]interface{}) { + result = append(result, item.(api.LogRes)) + } + return +} +func (self *Eth) GetLogs() (result []api.LogRes, failure error) { + res, err := self.xeth.Call("eth_getLogs", nil) + if err != nil { + failure = err + return + } + for _, item := range res.([]interface{}) { + result = append(result, item.(api.LogRes)) + } + return +} +func (self *Eth) GetStorage(address string, blockNumber int64) (result map[string]string, failure error) { + res, err := self.xeth.Call("eth_getStorage", []interface{}{address, blockNumber}) + if err != nil { + failure = err + return + } + return res.(map[string]string), nil +} +func (self *Eth) GetStorageAt(address string, blockNumber int64, key string) (result string, failure error) { + res, err := self.xeth.Call("eth_getStorageAt", []interface{}{address, blockNumber, key}) + if err != nil { + failure = err + return + } + return res.(string), nil +} +func (self *Eth) GetTransactionByBlockHashAndIndex() (interface{}, error) { + return self.xeth.Call("eth_getTransactionByBlockHashAndIndex", nil) +} +func (self *Eth) GetTransactionByBlockNumberAndIndex() (interface{}, error) { + return self.xeth.Call("eth_getTransactionByBlockNumberAndIndex", nil) +} +func (self *Eth) GetTransactionByHash() (interface{}, error) { + return self.xeth.Call("eth_getTransactionByHash", nil) +} +func (self *Eth) GetTransactionCount() (result int64, failure error) { + res, err := self.xeth.Call("eth_getTransactionCount", nil) + if err != nil { + failure = err + return + } + return new(big.Int).SetBytes(common.FromHex(res.(string))).Int64(), nil +} +func (self *Eth) GetTransactionReceipt() (interface{}, error) { + return self.xeth.Call("eth_getTransactionReceipt", nil) +} +func (self *Eth) GetUncleByBlockHashAndIndex() (interface{}, error) { + return self.xeth.Call("eth_getUncleByBlockHashAndIndex", nil) +} +func (self *Eth) GetUncleByBlockNumberAndIndex() (interface{}, error) { + return self.xeth.Call("eth_getUncleByBlockNumberAndIndex", nil) +} +func (self *Eth) GetUncleCountByBlockHash() (result int64, failure error) { + res, err := self.xeth.Call("eth_getUncleCountByBlockHash", nil) + if err != nil { + failure = err + return + } + return new(big.Int).SetBytes(common.FromHex(res.(string))).Int64(), nil +} +func (self *Eth) GetUncleCountByBlockNumber() (result int64, failure error) { + res, err := self.xeth.Call("eth_getUncleCountByBlockNumber", nil) + if err != nil { + failure = err + return + } + return new(big.Int).SetBytes(common.FromHex(res.(string))).Int64(), nil +} +func (self *Eth) GetWork() (result [3]string, failure error) { + res, err := self.xeth.Call("eth_getWork", nil) + if err != nil { + failure = err + return + } + return res.([3]string), nil +} +func (self *Eth) Hashrate() (result int64, failure error) { + res, err := self.xeth.Call("eth_hashrate", nil) + if err != nil { + failure = err + return + } + return new(big.Int).SetBytes(common.FromHex(res.(string))).Int64(), nil +} +func (self *Eth) Mining() (result bool, failure error) { + res, err := self.xeth.Call("eth_mining", nil) + if err != nil { + failure = err + return + } + return res.(bool), nil +} +func (self *Eth) NewBlockFilter() (result int64, failure error) { + res, err := self.xeth.Call("eth_newBlockFilter", nil) + if err != nil { + failure = err + return + } + return new(big.Int).SetBytes(common.FromHex(res.(string))).Int64(), nil +} +func (self *Eth) NewFilter() (result int64, failure error) { + res, err := self.xeth.Call("eth_newFilter", nil) + if err != nil { + failure = err + return + } + return new(big.Int).SetBytes(common.FromHex(res.(string))).Int64(), nil +} +func (self *Eth) NewPendingTransactionFilter() (result int64, failure error) { + res, err := self.xeth.Call("eth_newPendingTransactionFilter", nil) + if err != nil { + failure = err + return + } + return new(big.Int).SetBytes(common.FromHex(res.(string))).Int64(), nil +} +func (self *Eth) PendingTransactions() (interface{}, error) { + return self.xeth.Call("eth_pendingTransactions", nil) +} +func (self *Eth) ProtocolVersion() (result string, failure error) { + res, err := self.xeth.Call("eth_protocolVersion", nil) + if err != nil { + failure = err + return + } + return res.(string), nil +} +func (self *Eth) SendRawTransaction() (interface{}, error) { + return self.xeth.Call("eth_sendRawTransaction", nil) +} +func (self *Eth) SendTransaction() (interface{}, error) { + return self.xeth.Call("eth_sendTransaction", nil) +} +func (self *Eth) Sign() (interface{}, error) { + return self.xeth.Call("eth_sign", nil) +} +func (self *Eth) StorageAt(address string, blockNumber int64) (result map[string]string, failure error) { + res, err := self.xeth.Call("eth_storageAt", []interface{}{address, blockNumber}) + if err != nil { + failure = err + return + } + return res.(map[string]string), nil +} +func (self *Eth) SubmitHashrate() (result bool, failure error) { + res, err := self.xeth.Call("eth_submitHashrate", nil) + if err != nil { + failure = err + return + } + return res.(bool), nil +} +func (self *Eth) SubmitWork(nonce uint64, header string, digest string) (result bool, failure error) { + res, err := self.xeth.Call("eth_submitWork", []interface{}{nonce, header, digest}) + if err != nil { + failure = err + return + } + return res.(bool), nil +} +func (self *Eth) Transact() (interface{}, error) { + return self.xeth.Call("eth_transact", nil) +} +func (self *Eth) UninstallFilter() (result bool, failure error) { + res, err := self.xeth.Call("eth_uninstallFilter", nil) + if err != nil { + failure = err + return + } + return res.(bool), nil +} + +type Miner struct { + xeth *Xeth +} + +func (self *Miner) Hashrate() (result int64, failure error) { + res, err := self.xeth.Call("miner_hashrate", nil) + if err != nil { + failure = err + return + } + return new(big.Int).SetBytes(common.FromHex(res.(string))).Int64(), nil +} +func (self *Miner) MakeDAG(blockNumber int64) (result bool, failure error) { + res, err := self.xeth.Call("miner_makeDAG", []interface{}{blockNumber}) + if err != nil { + failure = err + return + } + return res.(bool), nil +} +func (self *Miner) SetEtherbase(etherbase common.Address) (interface{}, error) { + return self.xeth.Call("miner_setEtherbase", []interface{}{etherbase}) +} +func (self *Miner) SetExtra(data string) (result bool, failure error) { + res, err := self.xeth.Call("miner_setExtra", []interface{}{data}) + if err != nil { + failure = err + return + } + return res.(bool), nil +} +func (self *Miner) SetGasPrice() (result bool, failure error) { + res, err := self.xeth.Call("miner_setGasPrice", nil) + if err != nil { + failure = err + return + } + return res.(bool), nil +} +func (self *Miner) Start(threads int) (result bool, failure error) { + res, err := self.xeth.Call("miner_start", []interface{}{threads}) + if err != nil { + failure = err + return + } + return res.(bool), nil +} +func (self *Miner) StartAutoDAG() (result bool, failure error) { + res, err := self.xeth.Call("miner_startAutoDAG", nil) + if err != nil { + failure = err + return + } + return res.(bool), nil +} +func (self *Miner) Stop() (result bool, failure error) { + res, err := self.xeth.Call("miner_stop", nil) + if err != nil { + failure = err + return + } + return res.(bool), nil +} +func (self *Miner) StopAutoDAG() (result bool, failure error) { + res, err := self.xeth.Call("miner_stopAutoDAG", nil) + if err != nil { + failure = err + return + } + return res.(bool), nil +} + +type Net struct { + xeth *Xeth +} + +func (self *Net) Listening() (result bool, failure error) { + res, err := self.xeth.Call("net_listening", nil) + if err != nil { + failure = err + return + } + return res.(bool), nil +} +func (self *Net) PeerCount() (result int64, failure error) { + res, err := self.xeth.Call("net_peerCount", nil) + if err != nil { + failure = err + return + } + return new(big.Int).SetBytes(common.FromHex(res.(string))).Int64(), nil +} +func (self *Net) Version() (result string, failure error) { + res, err := self.xeth.Call("net_version", nil) + if err != nil { + failure = err + return + } + return res.(string), nil +} + +type Personal struct { + xeth *Xeth +} + +func (self *Personal) ListAccounts() (result []string, failure error) { + res, err := self.xeth.Call("personal_listAccounts", nil) + if err != nil { + failure = err + return + } + for _, item := range res.([]interface{}) { + result = append(result, item.(string)) + } + return +} +func (self *Personal) NewAccount(passphrase string) (result string, failure error) { + res, err := self.xeth.Call("personal_newAccount", []interface{}{passphrase}) + if err != nil { + failure = err + return + } + return res.(string), nil +} +func (self *Personal) UnlockAccount(address string, passphrase string, duration int) (result bool, failure error) { + res, err := self.xeth.Call("personal_unlockAccount", []interface{}{address, passphrase, duration}) + if err != nil { + failure = err + return + } + return res.(bool), nil +} + +type Shh struct { + xeth *Xeth +} + +func (self *Shh) GetFilterChanges() (result []xeth.WhisperMessage, failure error) { + res, err := self.xeth.Call("shh_getFilterChanges", nil) + if err != nil { + failure = err + return + } + for _, item := range res.([]interface{}) { + result = append(result, item.(xeth.WhisperMessage)) + } + return +} +func (self *Shh) GetMessages() (result []xeth.WhisperMessage, failure error) { + res, err := self.xeth.Call("shh_getMessages", nil) + if err != nil { + failure = err + return + } + for _, item := range res.([]interface{}) { + result = append(result, item.(xeth.WhisperMessage)) + } + return +} +func (self *Shh) HasIdentity() (result bool, failure error) { + res, err := self.xeth.Call("shh_hasIdentity", nil) + if err != nil { + failure = err + return + } + return res.(bool), nil +} +func (self *Shh) NewFilter() (result int64, failure error) { + res, err := self.xeth.Call("shh_newFilter", nil) + if err != nil { + failure = err + return + } + return new(big.Int).SetBytes(common.FromHex(res.(string))).Int64(), nil +} +func (self *Shh) NewIdentity() (result string, failure error) { + res, err := self.xeth.Call("shh_newIdentity", nil) + if err != nil { + failure = err + return + } + return res.(string), nil +} +func (self *Shh) Post() (result bool, failure error) { + res, err := self.xeth.Call("shh_post", nil) + if err != nil { + failure = err + return + } + return res.(bool), nil +} +func (self *Shh) UninstallFilter() (result bool, failure error) { + res, err := self.xeth.Call("shh_uninstallFilter", nil) + if err != nil { + failure = err + return + } + return res.(bool), nil +} +func (self *Shh) Version() (result uint, failure error) { + res, err := self.xeth.Call("shh_version", nil) + if err != nil { + failure = err + return + } + return res.(uint), nil +} + +type Txpool struct { + xeth *Xeth +} + +func (self *Txpool) Status() (interface{}, error) { + return self.xeth.Call("txpool_status", nil) +} + +type Web3 struct { + xeth *Xeth +} + +func (self *Web3) ClientVersion() (result string, failure error) { + res, err := self.xeth.Call("web3_clientVersion", nil) + if err != nil { + failure = err + return + } + return res.(string), nil +} +func (self *Web3) Sha3(data string) (interface{}, error) { + return self.xeth.Call("web3_sha3", []interface{}{data}) +} diff --git a/rpc/generator/generator.go b/rpc/generator/generator.go new file mode 100644 index 0000000000..54be566b6b --- /dev/null +++ b/rpc/generator/generator.go @@ -0,0 +1,391 @@ +// Copyright 2015 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +// This is the Go API auto-generator for the RPC APIs. +package main //build !none + +//go:generate go run generator.go + +import ( + "encoding/json" + "fmt" + "go/ast" + "go/parser" + "go/token" + "io/ioutil" + "log" + "os" + "os/exec" + "path/filepath" + "reflect" + "regexp" + "sort" + "strings" + "unicode" + + "golang.org/x/tools/go/loader" + "golang.org/x/tools/go/types" + "golang.org/x/tools/imports" +) + +// Package description from the go list command +type Package struct { + Name string + Dir string + GoFiles []string +} + +type Endpoint struct { + Method string + Function string + Params []string + Return string +} + +func main() { + // Load the entire package and dependencies for static analysis + conf := new(loader.Config) + conf.Import("github.com/ethereum/go-ethereum/rpc/api") + + prog, err := conf.Load() + if err != nil { + log.Fatalf("Failed to load API package: %v", err) + } + info := prog.Imported["github.com/ethereum/go-ethereum/rpc/api"].Info + + // Iterate over all the API files and collect the top level declarations + api, err := details("github.com/ethereum/go-ethereum/rpc/api") + if err != nil { + log.Fatalf("Failed to retrieve API package details: %v", err) + } + funs, types, values, err := declarations(api) + if err != nil { + log.Fatalf("Failed to collect API declarations: %v", err) + } + // Gather all the deteced API endpoints + methods, err := endpoints(info, funs, types, values) + if err != nil { + log.Fatalf("Failed to gather API endpoints: %v", err) + } + // Generate the client API and output if successfull + if code, err := generate(methods); err != nil { + log.Fatalf("Failed to format output code: %v", err) + } else if err := ioutil.WriteFile("../genapi.go", code, 0600); err != nil { + log.Fatalf("Failed to write output code: %v", err) + } +} + +// details loads the metadata of the Go package. +func details(name string) (*Package, error) { + // Create the command to retrieve the package infos + cmd := exec.Command("go", "list", "-e", "-json", name) + + // Retrieve the output, redirect the errors + out, err := cmd.StdoutPipe() + if err != nil { + return nil, err + } + cmd.Stderr = os.Stderr + + // Start executing and parse the results + if err := cmd.Start(); err != nil { + return nil, err + } + defer cmd.Process.Kill() + + info := new(Package) + if err := json.NewDecoder(out).Decode(&info); err != nil { + return nil, err + } + // Clean up and return + if err := cmd.Wait(); err != nil { + return nil, err + } + return info, nil +} + +// declarations iterates over a package contents and collects type and value declarations. +func declarations(pack *Package) (map[string]*ast.BlockStmt, map[string]*ast.TypeSpec, map[string]ast.Expr, error) { + funs := make(map[string]*ast.BlockStmt) + types := make(map[string]*ast.TypeSpec) + values := make(map[string]ast.Expr) + + for _, path := range pack.GoFiles { + // Parse the specified source file + fileSet := token.NewFileSet() + tree, err := parser.ParseFile(fileSet, filepath.Join(pack.Dir, path), nil, parser.ParseComments) + if err != nil { + return nil, nil, nil, err + } + // Collect all top level declarations + for _, decl := range tree.Decls { + switch decl := decl.(type) { + case *ast.FuncDecl: + if decl.Recv != nil { + recv := decl.Recv.List[0].Type.(*ast.StarExpr).X.(*ast.Ident).String() + call := decl.Name.String() + funs[recv+"."+call] = decl.Body + } + case *ast.GenDecl: + for _, spec := range decl.Specs { + switch spec := spec.(type) { + case *ast.ValueSpec: + for i, name := range spec.Names { + values[name.String()] = spec.Values[i] + } + case *ast.TypeSpec: + types[spec.Name.String()] = spec + } + } + } + } + } + return funs, types, values, nil +} + +// returns recursively iterates over a block statement and extracts all the +// return statements that contain nil errors. +func returns(block *ast.BlockStmt) []*ast.ReturnStmt { + results := []*ast.ReturnStmt{} + + for _, stmt := range block.List { + switch stmt := stmt.(type) { + case *ast.ReturnStmt: + if ident, ok := stmt.Results[1].(*ast.Ident); ok { + if ident.String() == "nil" { + results = append(results, stmt) + } + } + case *ast.IfStmt: + results = append(results, returns(stmt.Body)...) + } + } + return results +} + +// flatten converts a possibly multi selextor expression into a string identifier. +func flatten(sel ast.Expr) string { + switch x := sel.(type) { + case *ast.Ident: + return x.String() + case *ast.SelectorExpr: + return flatten(x.X) + "." + x.Sel.String() + case *ast.CallExpr: + return flatten(x.Fun) + "()" + default: + //fmt.Println("unknown selector to flatten", reflect.TypeOf(sel.X)) + } + return "" +} + +// endpoints collects the detected RPC API method endpoints. +func endpoints(info types.Info, funs map[string]*ast.BlockStmt, typeDecls map[string]*ast.TypeSpec, values map[string]ast.Expr) (map[string][]*Endpoint, error) { + methods := make(map[string][]*Endpoint) + + // Iterate over all the API mappings, and locate the RPC function associations + for variable, val := range values { + if strings.HasSuffix(variable, "Mapping") { + // Iterate over all the exposed functionality and extract them + for _, mapping := range val.(*ast.CompositeLit).Elts { + // Fetch the name of the RPC function, and the associated argument definition + call := strings.Trim(mapping.(*ast.KeyValueExpr).Key.(*ast.BasicLit).Value, "\"") + impl := mapping.(*ast.KeyValueExpr).Value.(*ast.SelectorExpr) + args := mapping.(*ast.KeyValueExpr).Value.(*ast.SelectorExpr).Sel.Name + "Args" + + // Generate the submodule and function names + module := strings.Split(call, "_")[0] + module = string(unicode.ToUpper(rune(module[0]))) + module[1:] + function := strings.Split(call, "_")[1] + function = string(unicode.ToUpper(rune(function[0]))) + function[1:] + + // Generate the parameter list + params, paramList := []string{}, []string{} + if arg := typeDecls[args]; arg != nil { + for _, field := range arg.Type.(*ast.StructType).Fields.List { + variable := field.Names[0].String() + variable = string(unicode.ToLower(rune(variable[0]))) + variable[1:] + + kind := "" + switch t := field.Type.(type) { + case *ast.Ident: + kind = t.String() + case *ast.SelectorExpr: + kind = t.X.(*ast.Ident).String() + "." + t.Sel.String() + case *ast.StarExpr: + switch sub := t.X.(type) { + case *ast.Ident: + kind = "*" + sub.String() + case *ast.SelectorExpr: + kind = "*" + sub.X.(*ast.Ident).String() + "." + sub.Sel.String() + default: + return nil, fmt.Errorf("Unknown pointer subtype: %v", sub) + } + default: + return nil, fmt.Errorf("Unknown type: %v", t) + } + params = append(params, fmt.Sprintf("%s %s", variable, kind)) + paramList = append(paramList, variable) + } + } + // Try to detect and generate the return type + owner := impl.X.(*ast.ParenExpr).X.(*ast.StarExpr).X.(*ast.Ident).String() + method := mapping.(*ast.KeyValueExpr).Value.(*ast.SelectorExpr).Sel.String() + rets := returns(funs[owner+"."+method]) + + result := "interface{}" + for _, ret := range rets { + switch res := ret.Results[0].(type) { + case *ast.Ident: + if res.String() == "nil" { + break + } else if res.String() == "true" || res.String() == "false" { + result = "bool" + } else { + fmt.Println(owner, method, res, "unknown ident") + } + case *ast.CallExpr: + if ident, ok := res.Fun.(*ast.Ident); ok { + if ident.String() == "string" { + result = "string" + } else if ident.String() == "newHexNum" { + result = "int64" + } else if ident.String() == "newHexData" { + result = "[]byte" + } else { + for match, def := range info.Defs { + if ident.String() == match.String() { + result = def.Type().(*types.Signature).Results().At(0).Type().String() + if strings.Contains(result, "/") { + result = regexp.MustCompile("[a-zA-Z0-9-\\.]+/").ReplaceAllString(result, "") + } + } + } + if result == "interface{}" { + fmt.Println(owner, method, res, "unknown ident funcion") + } + } + } else if sel, ok := res.Fun.(*ast.SelectorExpr); ok { + if selector := flatten(sel); selector != "" { + for match, selection := range info.Selections { + if flatten(match) == selector { + result = selection.Type().(*types.Signature).Results().At(0).Type().String() + if strings.Contains(result, "/") { + result = regexp.MustCompile("[a-zA-Z0-9-\\.]+/").ReplaceAllString(result, "") + } + } + } + } + } else { + fmt.Println(owner, method, res, "call", res.Fun, reflect.TypeOf(res.Fun)) + } + default: + fmt.Println(owner, method, res, reflect.TypeOf(ret.Results[0])) + } + } + // Insert the function to the submodule collection (alphabetically) + methods[module] = append(methods[module], &Endpoint{ + Method: call, + Function: fmt.Sprintf("%s(%s)", function, strings.Join(params, ",")), + Params: paramList, + Return: result, + }) + } + } + } + return methods, nil +} + +// generate creates the client code belonging to a set of API method endpoints. +func generate(methods map[string][]*Endpoint) ([]byte, error) { + // Create a sorted list of API modules and endpoints to generate + modules := make([]string, 0, len(methods)) + for module, _ := range methods { + modules = append(modules, module) + } + sort.Strings(modules) + + for _, module := range modules { + for i := 0; i < len(methods[module]); i++ { + for j := i + 1; j < len(methods[module]); j++ { + if methods[module][i].Function > methods[module][j].Function { + methods[module][i], methods[module][j] = methods[module][j], methods[module][i] + } + } + } + } + // Start generating the client API + client := "package rpc\n" + + // Generate the client struct with all its submodules + client += fmt.Sprintf("type GenApi struct {\n") + for _, module := range modules { + client += fmt.Sprintf("%s *%s\n", module, module) + } + client += fmt.Sprintf("}\n") + + // Generate the API constructor to create the individual submodules + client += fmt.Sprint("func NewGenApi(client comms.EthereumClient) *GenApi {\n") + client += fmt.Sprint("xeth := NewXeth(client)\n\n") + client += fmt.Sprint("return &GenApi{\n") + for _, module := range modules { + client += fmt.Sprintf("%s: &%s{xeth},\n", module, module) + } + client += fmt.Sprintf("}}\n") + + // Generate each of the client API calls + for _, module := range modules { + endpoints := methods[module] + + client += fmt.Sprintf("\ntype %s struct {\n xeth *Xeth\n}\n", module) + for _, endpoint := range endpoints { + // Generate the header (only add variables if conversions are required) + if endpoint.Return == "interface{}" { + client += fmt.Sprintf("func (self *%s) %s (interface{}, error) {\n", module, endpoint.Function) + } else { + client += fmt.Sprintf("func (self *%s) %s (result %s, failure error) {\n", module, endpoint.Function, endpoint.Return) + } + // Generate the actual function invocation (straight return if no return type is known) + invocation := fmt.Sprintf("self.xeth.Call(\"%s\", nil)", endpoint.Method) + if len(endpoint.Params) > 0 { + invocation = fmt.Sprintf("self.xeth.Call(\"%s\", []interface{}{%s})", endpoint.Method, strings.Join(endpoint.Params, ",")) + } + if endpoint.Return == "interface{}" { + client += fmt.Sprintf("return %s\n", invocation) + } else { + client += fmt.Sprintf("res, err := %s\n", invocation) + } + // If conversions are needed, check for errors and post process + if endpoint.Return != "interface{}" { + client += fmt.Sprintf("if err != nil { failure = err; return; }\n") + + if endpoint.Return == "int64" { + client += fmt.Sprintf("return new(big.Int).SetBytes(common.FromHex(res.(string))).Int64(), nil\n") + } else if endpoint.Return == "*big.Int" { + client += fmt.Sprintf("return new(big.Int).SetBytes(common.FromHex(res.(string))), nil\n") + } else if endpoint.Return == "[]byte" { + client += fmt.Sprintf("return res.([]byte), nil\n") + } else if strings.HasPrefix(endpoint.Return, "[]") { + client += fmt.Sprintf("for _, item := range res.([]interface{}) { result = append(result, item.(%s))}; return\n", endpoint.Return[2:]) + } else { + client += fmt.Sprintf("return res.(%s), nil\n", endpoint.Return) + } + } + client += fmt.Sprintf("}\n") + } + } + // Format the final code and return + return imports.Process("", []byte(client), nil) +} diff --git a/rpc/xeth.go b/rpc/xeth.go index 9527a96c00..25a4d98fd8 100644 --- a/rpc/xeth.go +++ b/rpc/xeth.go @@ -41,7 +41,7 @@ func NewXeth(client comms.EthereumClient) *Xeth { } // Call invokes a method with the given parameters are the remote node. -func (self *Xeth) Call(method string, params []interface{}) (map[string]interface{}, error) { +func (self *Xeth) Call(method string, params []interface{}) (interface{}, error) { // Assemble the json RPC request data, err := json.Marshal(params) if err != nil { @@ -69,7 +69,7 @@ func (self *Xeth) Call(method string, params []interface{}) (map[string]interfac return nil, fmt.Errorf("Method invocation failed: %v", failure.Error) case isSuccessResponse: - return success.Result.(map[string]interface{}), nil + return success.Result, nil default: return nil, fmt.Errorf("Invalid response type: %v", reflect.TypeOf(res))