mirror of https://github.com/ethereum/go-ethereum
eth/tracers: remove revertReasonTracer, add revert reason to callTracer (#25508)
* eth/tracers: add revertReason to callTracer * update callframe gen json * add revertal to calltrace testpull/25892/head
Sina Mahmoodi
2 years ago
committed by
GitHub
parent
c2918c2f47
commit
ff1f49245d
@ -1,108 +0,0 @@ |
||||
// 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 ( |
||||
"bytes" |
||||
"encoding/json" |
||||
"math/big" |
||||
"sync/atomic" |
||||
"time" |
||||
|
||||
"github.com/ethereum/go-ethereum/accounts/abi" |
||||
"github.com/ethereum/go-ethereum/common" |
||||
"github.com/ethereum/go-ethereum/core/vm" |
||||
"github.com/ethereum/go-ethereum/crypto" |
||||
"github.com/ethereum/go-ethereum/eth/tracers" |
||||
) |
||||
|
||||
func init() { |
||||
register("revertReasonTracer", newRevertReasonTracer) |
||||
} |
||||
|
||||
var revertSelector = crypto.Keccak256([]byte("Error(string)"))[:4] |
||||
|
||||
// revertReasonTracer is a go implementation of the Tracer interface which
|
||||
// track the error message or revert reason return by the contract.
|
||||
type revertReasonTracer struct { |
||||
env *vm.EVM |
||||
revertReason string // The revert reason return from the tx, if tx success, empty string return
|
||||
interrupt uint32 // Atomic flag to signal execution interruption
|
||||
reason error // Textual reason for the interruption
|
||||
} |
||||
|
||||
// newRevertReasonTracer returns a new revert reason tracer.
|
||||
func newRevertReasonTracer(_ *tracers.Context, _ json.RawMessage) (tracers.Tracer, error) { |
||||
return &revertReasonTracer{}, nil |
||||
} |
||||
|
||||
// CaptureStart implements the EVMLogger interface to initialize the tracing operation.
|
||||
func (t *revertReasonTracer) CaptureStart(env *vm.EVM, _ common.Address, _ common.Address, _ bool, _ []byte, _ uint64, _ *big.Int) { |
||||
t.env = env |
||||
} |
||||
|
||||
// CaptureEnd is called after the call finishes to finalize the tracing.
|
||||
func (t *revertReasonTracer) CaptureEnd(output []byte, _ uint64, _ time.Duration, err error) { |
||||
if err != nil { |
||||
if err == vm.ErrExecutionReverted && len(output) > 4 && bytes.Equal(output[:4], revertSelector) { |
||||
errMsg, _ := abi.UnpackRevert(output) |
||||
t.revertReason = err.Error() + ": " + errMsg |
||||
} else { |
||||
t.revertReason = err.Error() |
||||
} |
||||
} |
||||
} |
||||
|
||||
// CaptureState implements the EVMLogger interface to trace a single step of VM execution.
|
||||
func (t *revertReasonTracer) CaptureState(_ uint64, _ vm.OpCode, _, _ uint64, _ *vm.ScopeContext, _ []byte, _ int, _ error) { |
||||
} |
||||
|
||||
// CaptureFault implements the EVMLogger interface to trace an execution fault.
|
||||
func (t *revertReasonTracer) CaptureFault(_ uint64, _ vm.OpCode, _, _ uint64, _ *vm.ScopeContext, _ int, _ error) { |
||||
} |
||||
|
||||
// CaptureEnter is called when EVM enters a new scope (via call, create or selfdestruct).
|
||||
func (t *revertReasonTracer) CaptureEnter(_ vm.OpCode, _ common.Address, _ common.Address, _ []byte, _ uint64, _ *big.Int) { |
||||
// Skip if tracing was interrupted
|
||||
if atomic.LoadUint32(&t.interrupt) > 0 { |
||||
t.env.Cancel() |
||||
return |
||||
} |
||||
} |
||||
|
||||
// CaptureExit is called when EVM exits a scope, even if the scope didn't
|
||||
// execute any code.
|
||||
func (t *revertReasonTracer) CaptureExit(_ []byte, _ uint64, _ error) {} |
||||
|
||||
func (t *revertReasonTracer) CaptureTxStart(_ uint64) {} |
||||
|
||||
func (t *revertReasonTracer) CaptureTxEnd(_ uint64) {} |
||||
|
||||
// GetResult returns an error message json object.
|
||||
func (t *revertReasonTracer) GetResult() (json.RawMessage, error) { |
||||
res, err := json.Marshal(t.revertReason) |
||||
if err != nil { |
||||
return nil, err |
||||
} |
||||
return res, t.reason |
||||
} |
||||
|
||||
// Stop terminates execution of the tracer at the first opportune moment.
|
||||
func (t *revertReasonTracer) Stop(err error) { |
||||
t.reason = err |
||||
atomic.StoreUint32(&t.interrupt, 1) |
||||
} |
||||
Loading…
Reference in new issue