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Merge pull request #1777 from bnb-chain/develop
release: draft release v1.2.9
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,138 @@ | ||
| // Copyright 2022 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 native | ||
|
|
||
| import ( | ||
| "encoding/json" | ||
| "math/big" | ||
|
|
||
| "github.com/ethereum/go-ethereum/common" | ||
| "github.com/ethereum/go-ethereum/core/vm" | ||
| "github.com/ethereum/go-ethereum/eth/tracers" | ||
| ) | ||
|
|
||
| func init() { | ||
| register("muxTracer", newMuxTracer) | ||
| } | ||
|
|
||
| // muxTracer is a go implementation of the Tracer interface which | ||
| // runs multiple tracers in one go. | ||
| type muxTracer struct { | ||
| names []string | ||
| tracers []tracers.Tracer | ||
| } | ||
|
|
||
| // newMuxTracer returns a new mux tracer. | ||
| func newMuxTracer(ctx *tracers.Context, cfg json.RawMessage) (tracers.Tracer, error) { | ||
| var config map[string]json.RawMessage | ||
| if cfg != nil { | ||
| if err := json.Unmarshal(cfg, &config); err != nil { | ||
| return nil, err | ||
| } | ||
| } | ||
| objects := make([]tracers.Tracer, 0, len(config)) | ||
| names := make([]string, 0, len(config)) | ||
| for k, v := range config { | ||
| t, err := tracers.New(k, ctx, v) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| objects = append(objects, t) | ||
| names = append(names, k) | ||
| } | ||
|
|
||
| return &muxTracer{names: names, tracers: objects}, nil | ||
| } | ||
|
|
||
| // CaptureStart implements the EVMLogger interface to initialize the tracing operation. | ||
| func (t *muxTracer) CaptureStart(env *vm.EVM, from common.Address, to common.Address, create bool, input []byte, gas uint64, value *big.Int) { | ||
| for _, t := range t.tracers { | ||
| t.CaptureStart(env, from, to, create, input, gas, value) | ||
| } | ||
| } | ||
|
|
||
| // CaptureEnd is called after the call finishes to finalize the tracing. | ||
| func (t *muxTracer) CaptureEnd(output []byte, gasUsed uint64, err error) { | ||
| for _, t := range t.tracers { | ||
| t.CaptureEnd(output, gasUsed, err) | ||
| } | ||
| } | ||
|
|
||
| // CaptureState implements the EVMLogger interface to trace a single step of VM execution. | ||
| func (t *muxTracer) CaptureState(pc uint64, op vm.OpCode, gas, cost uint64, scope *vm.ScopeContext, rData []byte, depth int, err error) { | ||
| for _, t := range t.tracers { | ||
| t.CaptureState(pc, op, gas, cost, scope, rData, depth, err) | ||
| } | ||
| } | ||
|
|
||
| // CaptureFault implements the EVMLogger interface to trace an execution fault. | ||
| func (t *muxTracer) CaptureFault(pc uint64, op vm.OpCode, gas, cost uint64, scope *vm.ScopeContext, depth int, err error) { | ||
| for _, t := range t.tracers { | ||
| t.CaptureFault(pc, op, gas, cost, scope, depth, err) | ||
| } | ||
| } | ||
|
|
||
| // CaptureEnter is called when EVM enters a new scope (via call, create or selfdestruct). | ||
| func (t *muxTracer) CaptureEnter(typ vm.OpCode, from common.Address, to common.Address, input []byte, gas uint64, value *big.Int) { | ||
| for _, t := range t.tracers { | ||
| t.CaptureEnter(typ, from, to, input, gas, value) | ||
| } | ||
| } | ||
|
|
||
| // CaptureExit is called when EVM exits a scope, even if the scope didn't | ||
| // execute any code. | ||
| func (t *muxTracer) CaptureExit(output []byte, gasUsed uint64, err error) { | ||
| for _, t := range t.tracers { | ||
| t.CaptureExit(output, gasUsed, err) | ||
| } | ||
| } | ||
|
|
||
| func (t *muxTracer) CaptureTxStart(gasLimit uint64) { | ||
| for _, t := range t.tracers { | ||
| t.CaptureTxStart(gasLimit) | ||
| } | ||
| } | ||
|
|
||
| func (t *muxTracer) CaptureTxEnd(restGas uint64) { | ||
| for _, t := range t.tracers { | ||
| t.CaptureTxEnd(restGas) | ||
| } | ||
| } | ||
|
|
||
| // GetResult returns an empty json object. | ||
| func (t *muxTracer) GetResult() (json.RawMessage, error) { | ||
| resObject := make(map[string]json.RawMessage) | ||
| for i, tt := range t.tracers { | ||
| r, err := tt.GetResult() | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| resObject[t.names[i]] = r | ||
| } | ||
| res, err := json.Marshal(resObject) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| return res, nil | ||
| } | ||
|
|
||
| // Stop terminates execution of the tracer at the first opportune moment. | ||
| func (t *muxTracer) Stop(err error) { | ||
| for _, t := range t.tracers { | ||
| t.Stop(err) | ||
| } | ||
| } |
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