88 lines
2.5 KiB
Go
88 lines
2.5 KiB
Go
// Copyright 2014 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 (
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"encoding/json"
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"fmt"
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"io"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/rlp"
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)
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type Log struct {
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// Consensus fields
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Address common.Address
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Topics []common.Hash
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Data []byte
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// Derived fields (don't reorder!)
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BlockNumber uint64
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TxHash common.Hash
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TxIndex uint
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BlockHash common.Hash
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Index uint
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}
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func NewLog(address common.Address, topics []common.Hash, data []byte, number uint64) *Log {
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return &Log{Address: address, Topics: topics, Data: data, BlockNumber: number}
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}
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func (l *Log) EncodeRLP(w io.Writer) error {
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return rlp.Encode(w, []interface{}{l.Address, l.Topics, l.Data})
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}
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func (l *Log) DecodeRLP(s *rlp.Stream) error {
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var log struct {
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Address common.Address
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Topics []common.Hash
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Data []byte
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}
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if err := s.Decode(&log); err != nil {
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return err
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}
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l.Address, l.Topics, l.Data = log.Address, log.Topics, log.Data
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return nil
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}
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func (l *Log) String() string {
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return fmt.Sprintf(`log: %x %x %x %x %d %x %d`, l.Address, l.Topics, l.Data, l.TxHash, l.TxIndex, l.BlockHash, l.Index)
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}
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func (r *Log) MarshalJSON() ([]byte, error) {
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fields := map[string]interface{}{
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"address": r.Address,
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"data": fmt.Sprintf("%#x", r.Data),
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"blockNumber": fmt.Sprintf("%#x", r.BlockNumber),
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"logIndex": fmt.Sprintf("%#x", r.Index),
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"blockHash": r.BlockHash,
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"transactionHash": r.TxHash,
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"transactionIndex": fmt.Sprintf("%#x", r.TxIndex),
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"topics": r.Topics,
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}
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return json.Marshal(fields)
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}
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type Logs []*Log
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// LogForStorage is a wrapper around a Log that flattens and parses the entire
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// content of a log, as opposed to only the consensus fields originally (by hiding
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// the rlp interface methods).
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type LogForStorage Log
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