go-ethereum/vendor/github.com/go-interpreter/wagon/internal/stack/stack.go
Guillaume Ballet 9927596822 core/vm: Add wagon/wasm as an interpreter
* Implement the ewasm module and the EEI.
 * Add an ewasm standalone binary to test standalone files
 * use reflection to declare EEI module exports
 * check the module name when importing EEI functions
 * make eeiFuncs a function to avoid an init loop issue in call
 * Add a reference to the ewasm tests
 * wagon implementation of the Interpreter interface
 * update to wagon's PR #59 and uses the Process structure
 * Adapt to endianness change
 * All tests but 1 passing
 * CanRun only checks for the header
 * Add a "debug" module to support "printHex" in contracts

Notes:
  * There are very little checks, e.g. of
     the call depths and so on.
2018-10-05 15:15:41 +02:00

40 lines
739 B
Go

// Copyright 2017 The go-interpreter 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 stack implements a growable uint64 stack
package stack
type Stack struct {
slice []uint64
}
func (s *Stack) Push(b uint64) {
s.slice = append(s.slice, b)
}
func (s *Stack) Pop() uint64 {
v := s.Top()
s.slice = s.slice[:len(s.slice)-1]
return v
}
func (s *Stack) SetTop(v uint64) {
s.slice[len(s.slice)-1] = v
}
func (s *Stack) Top() uint64 {
return s.slice[len(s.slice)-1]
}
func (s *Stack) Get(i int) uint64 {
return s.slice[i]
}
func (s *Stack) Set(i int, v uint64) {
s.slice[i] = v
}
func (s *Stack) Len() int {
return len(s.slice)
}