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core/vm: documentation + minor refactoring

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Martin Holst Swende 2024-03-18 13:11:21 +01:00
parent 25051c9ae1
commit e320d1e1e1
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GPG key ID: 683B438C05A5DDF0
1 changed files with 18 additions and 9 deletions
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27
core/vm/interpreter.go
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@ -41,6 +41,8 @@ type ScopeContext struct {
Contract *Contract Contract *Contract
} }
// MemoryData returns the underlying memory slice. Callers must not modify the contents
// of the returned data.
func (ctx *ScopeContext) MemoryData() []byte { func (ctx *ScopeContext) MemoryData() []byte {
if ctx.Memory == nil { if ctx.Memory == nil {
return nil return nil
@ -48,6 +50,8 @@ func (ctx *ScopeContext) MemoryData() []byte {
return ctx.Memory.Data() return ctx.Memory.Data()
} }
// MemoryData returns the stack data. Callers must not modify the contents
// of the returned data.
func (ctx *ScopeContext) StackData() []uint256.Int { func (ctx *ScopeContext) StackData() []uint256.Int {
if ctx.Stack == nil { if ctx.Stack == nil {
return nil return nil
@ -55,18 +59,23 @@ func (ctx *ScopeContext) StackData() []uint256.Int {
return ctx.Stack.Data() return ctx.Stack.Data()
} }
// Caller returns the current caller.
func (ctx *ScopeContext) Caller() common.Address { func (ctx *ScopeContext) Caller() common.Address {
return ctx.Contract.Caller() return ctx.Contract.Caller()
} }
// Address returns the address where this scope of execution is taking place.
func (ctx *ScopeContext) Address() common.Address { func (ctx *ScopeContext) Address() common.Address {
return ctx.Contract.Address() return ctx.Contract.Address()
} }
// CallValue returns the value supplied with this call.
func (ctx *ScopeContext) CallValue() *uint256.Int { func (ctx *ScopeContext) CallValue() *uint256.Int {
return ctx.Contract.Value() return ctx.Contract.Value()
} }
// CallInput returns the input/calldata with this call. Callers must not modify
// the contents of the returned data.
func (ctx *ScopeContext) CallInput() []byte { func (ctx *ScopeContext) CallInput() []byte {
return ctx.Contract.Input return ctx.Contract.Input
} }
@ -187,15 +196,15 @@ func (in *EVMInterpreter) Run(contract *Contract, input []byte, readOnly bool) (
contract.Input = input contract.Input = input
if debug { if debug {
defer func() { defer func() { // this deferred method handles exit-with-error
if err != nil { if err == nil {
if !logged { return
if in.evm.Config.Tracer.OnOpcode != nil { }
in.evm.Config.Tracer.OnOpcode(pcCopy, byte(op), gasCopy, cost, callContext, in.returnData, in.evm.depth, VMErrorFromErr(err)) if !logged && in.evm.Config.Tracer.OnOpcode != nil {
} in.evm.Config.Tracer.OnOpcode(pcCopy, byte(op), gasCopy, cost, callContext, in.returnData, in.evm.depth, VMErrorFromErr(err))
} else if in.evm.Config.Tracer.OnFault != nil { }
in.evm.Config.Tracer.OnFault(pcCopy, byte(op), gasCopy, cost, callContext, in.evm.depth, VMErrorFromErr(err)) if logged && in.evm.Config.Tracer.OnFault != nil {
} in.evm.Config.Tracer.OnFault(pcCopy, byte(op), gasCopy, cost, callContext, in.evm.depth, VMErrorFromErr(err))
} }
}() }()
} }