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
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package vm
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import "math/big"
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type jumpSeg struct {
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pos uint64
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err error
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gas *big.Int
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}
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func (j jumpSeg) do(program *Program, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
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if !contract.UseGas(j.gas) {
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return nil, OutOfGasError
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}
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if j.err != nil {
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return nil, j.err
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}
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*pc = j.pos
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return nil, nil
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}
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func (s jumpSeg) halts() bool { return false }
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func (s jumpSeg) Op() OpCode { return 0 }
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type pushSeg struct {
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data []*big.Int
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gas *big.Int
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}
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func (s pushSeg) do(program *Program, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
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// Use the calculated gas. When insufficient gas is present, use all gas and return an
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// Out Of Gas error
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if !contract.UseGas(s.gas) {
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return nil, OutOfGasError
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}
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for _, d := range s.data {
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stack.push(new(big.Int).Set(d))
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}
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*pc += uint64(len(s.data))
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return nil, nil
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}
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func (s pushSeg) halts() bool { return false }
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func (s pushSeg) Op() OpCode { return 0 }
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