forked from cerc-io/plugeth
781915f183
This CL makes several refactors: - Define a Tracer interface, implementing the `CaptureState` method - Add the VM environment as the first argument of `Tracer.CaptureState` - Rename existing functionality `StructLogger` an make it an implementation of `Tracer` - Delete `StructLogCollector` and make `StructLogger` collect the logs directly - Change all callers to use the new `StructLogger` where necessary and extract logs from that. - Deletes the apparently obsolete and likely nonfunctional 'TraceCall' from the eth API. Callers that only wish accumulated logs can use the `StructLogger` implementation straightforwardly. Callers that wish to efficiently capture VM traces and operate on them without excessive copying can now implement the `Tracer` interface to receive VM state at each step and do with it as they wish. This CL also removes the accumulation of logs from the vm.Environment; this was necessary as part of the refactor, but also simplifies it by removing a responsibility that doesn't directly belong to the Environment.
61 lines
1.8 KiB
Go
61 lines
1.8 KiB
Go
// 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 <http://www.gnu.org/licenses/>.
|
|
|
|
package vm
|
|
|
|
import "math/big"
|
|
|
|
type jumpSeg struct {
|
|
pos uint64
|
|
err error
|
|
gas *big.Int
|
|
}
|
|
|
|
func (j jumpSeg) do(program *Program, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
|
|
if !contract.UseGas(j.gas) {
|
|
return nil, OutOfGasError
|
|
}
|
|
if j.err != nil {
|
|
return nil, j.err
|
|
}
|
|
*pc = j.pos
|
|
return nil, nil
|
|
}
|
|
func (s jumpSeg) halts() bool { return false }
|
|
func (s jumpSeg) Op() OpCode { return 0 }
|
|
|
|
type pushSeg struct {
|
|
data []*big.Int
|
|
gas *big.Int
|
|
}
|
|
|
|
func (s pushSeg) do(program *Program, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
|
|
// Use the calculated gas. When insufficient gas is present, use all gas and return an
|
|
// Out Of Gas error
|
|
if !contract.UseGas(s.gas) {
|
|
return nil, OutOfGasError
|
|
}
|
|
|
|
for _, d := range s.data {
|
|
stack.push(new(big.Int).Set(d))
|
|
}
|
|
*pc += uint64(len(s.data))
|
|
return nil, nil
|
|
}
|
|
|
|
func (s pushSeg) halts() bool { return false }
|
|
func (s pushSeg) Op() OpCode { return 0 }
|