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https://github.com/ethereum/go-ethereum.git
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4e43718bd0
# Conflicts: # consensus/beacon/consensus.go # consensus/ethash/consensus.go # consensus/misc/dao.go # core/blockchain.go # core/evm.go # core/genesis.go # core/state/dump.go # core/state/state_object.go # core/state/statedb.go # core/state_transition.go # core/vm/evm.go # core/vm/instructions.go # core/vm/interface.go # internal/ethapi/api.go
116 lines
4.4 KiB
Go
116 lines
4.4 KiB
Go
// Copyright 2021 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 directory
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import (
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"encoding/json"
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"math/big"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/core/types"
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"github.com/ethereum/go-ethereum/eth/tracers/directory/live"
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)
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func init() {
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DefaultDirectory.Register("noopTracer", newNoopTracer, false)
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}
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// NoopTracer is a go implementation of the Tracer interface which
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// performs no action. It's mostly useful for testing purposes.
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type NoopTracer struct{}
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// newNoopTracer returns a new noop tracer.
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func newNoopTracer(ctx *Context, _ json.RawMessage) (*Tracer, error) {
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t := &NoopTracer{}
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return &Tracer{
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LiveLogger: &live.LiveLogger{
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CaptureTxStart: t.CaptureTxStart,
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CaptureTxEnd: t.CaptureTxEnd,
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CaptureStart: t.CaptureStart,
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CaptureEnd: t.CaptureEnd,
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CaptureEnter: t.CaptureEnter,
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CaptureExit: t.CaptureExit,
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CaptureState: t.CaptureState,
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CaptureFault: t.CaptureFault,
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CaptureKeccakPreimage: t.CaptureKeccakPreimage,
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OnGasChange: t.OnGasChange,
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OnBalanceChange: t.OnBalanceChange,
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OnNonceChange: t.OnNonceChange,
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OnCodeChange: t.OnCodeChange,
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OnStorageChange: t.OnStorageChange,
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OnLog: t.OnLog,
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},
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GetResult: t.GetResult,
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Stop: t.Stop,
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}, nil
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}
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// CaptureStart implements the EVMLogger interface to initialize the tracing operation.
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func (t *NoopTracer) CaptureStart(from common.Address, to common.Address, create bool, input []byte, gas uint64, value *big.Int) {
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}
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// CaptureEnd is called after the call finishes to finalize the tracing.
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func (t *NoopTracer) CaptureEnd(output []byte, gasUsed uint64, err error, reverted bool) {
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}
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// CaptureState implements the EVMLogger interface to trace a single step of VM execution.
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func (t *NoopTracer) CaptureState(pc uint64, op live.OpCode, gas, cost uint64, scope live.ScopeContext, rData []byte, depth int, err error) {
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}
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// CaptureFault implements the EVMLogger interface to trace an execution fault.
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func (t *NoopTracer) CaptureFault(pc uint64, op live.OpCode, gas, cost uint64, _ live.ScopeContext, depth int, err error) {
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}
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// CaptureKeccakPreimage is called during the KECCAK256 opcode.
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func (t *NoopTracer) CaptureKeccakPreimage(hash common.Hash, data []byte) {}
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// OnGasChange is called when gas is either consumed or refunded.
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func (t *NoopTracer) OnGasChange(old, new uint64, reason live.GasChangeReason) {}
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// CaptureEnter is called when EVM enters a new scope (via call, create or selfdestruct).
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func (t *NoopTracer) CaptureEnter(typ live.OpCode, from common.Address, to common.Address, input []byte, gas uint64, value *big.Int) {
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}
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// CaptureExit is called when EVM exits a scope, even if the scope didn't
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// execute any code.
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func (t *NoopTracer) CaptureExit(output []byte, gasUsed uint64, err error, reverted bool) {
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}
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func (*NoopTracer) CaptureTxStart(env *live.VMContext, tx *types.Transaction, from common.Address) {}
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func (*NoopTracer) CaptureTxEnd(receipt *types.Receipt, err error) {}
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func (*NoopTracer) OnBalanceChange(a common.Address, prev, new *big.Int, reason live.BalanceChangeReason) {
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}
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func (*NoopTracer) OnNonceChange(a common.Address, prev, new uint64) {}
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func (*NoopTracer) OnCodeChange(a common.Address, prevCodeHash common.Hash, prev []byte, codeHash common.Hash, code []byte) {
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}
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func (*NoopTracer) OnStorageChange(a common.Address, k, prev, new common.Hash) {}
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func (*NoopTracer) OnLog(log *types.Log) {}
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// GetResult returns an empty json object.
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func (t *NoopTracer) GetResult() (json.RawMessage, error) {
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return json.RawMessage(`{}`), nil
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}
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// Stop terminates execution of the tracer at the first opportune moment.
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func (t *NoopTracer) Stop(err error) {
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}
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