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98 lines
3.3 KiB
98 lines
3.3 KiB
// 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 native
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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/tracing"
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"github.com/ethereum/go-ethereum/core/types"
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"github.com/ethereum/go-ethereum/eth/tracers"
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)
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func init() {
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tracers.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 *tracers.Context, _ json.RawMessage) (*tracers.Tracer, error) {
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t := &noopTracer{}
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return &tracers.Tracer{
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Hooks: &tracing.Hooks{
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OnTxStart: t.OnTxStart,
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OnTxEnd: t.OnTxEnd,
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OnEnter: t.OnEnter,
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OnExit: t.OnExit,
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OnOpcode: t.OnOpcode,
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OnFault: t.OnFault,
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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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func (t *noopTracer) OnOpcode(pc uint64, op byte, gas, cost uint64, scope tracing.OpContext, rData []byte, depth int, err error) {
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}
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func (t *noopTracer) OnFault(pc uint64, op byte, gas, cost uint64, _ tracing.OpContext, depth int, err error) {
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}
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func (t *noopTracer) OnGasChange(old, new uint64, reason tracing.GasChangeReason) {}
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func (t *noopTracer) OnEnter(depth int, typ byte, from common.Address, to common.Address, input []byte, gas uint64, value *big.Int) {
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}
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func (t *noopTracer) OnExit(depth int, output []byte, gasUsed uint64, err error, reverted bool) {
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}
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func (*noopTracer) OnTxStart(env *tracing.VMContext, tx *types.Transaction, from common.Address) {
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}
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func (*noopTracer) OnTxEnd(receipt *types.Receipt, err error) {}
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func (*noopTracer) OnBalanceChange(a common.Address, prev, new *big.Int, reason tracing.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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