diff options
Diffstat (limited to 'core/vm/log.go')
| -rw-r--r-- | core/vm/log.go | 190 |
1 files changed, 0 insertions, 190 deletions
diff --git a/core/vm/log.go b/core/vm/log.go deleted file mode 100644 index 347bd6e5d..000000000 --- a/core/vm/log.go +++ /dev/null @@ -1,190 +0,0 @@ -// Copyright 2014 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 vm - -import ( - "encoding/json" - "errors" - "fmt" - "io" - - "github.com/ethereum/go-ethereum/common" - "github.com/ethereum/go-ethereum/common/hexutil" - "github.com/ethereum/go-ethereum/rlp" -) - -var errMissingLogFields = errors.New("missing required JSON log fields") - -// Log represents a contract log event. These events are generated by the LOG opcode and -// stored/indexed by the node. -type Log struct { - // Consensus fields. - Address common.Address // address of the contract that generated the event - Topics []common.Hash // list of topics provided by the contract. - Data []byte // supplied by the contract, usually ABI-encoded - - // Derived fields. These fields are filled in by the node - // but not secured by consensus. - BlockNumber uint64 // block in which the transaction was included - TxHash common.Hash // hash of the transaction - TxIndex uint // index of the transaction in the block - BlockHash common.Hash // hash of the block in which the transaction was included - Index uint // index of the log in the receipt - - // The Removed field is true if this log was reverted due to a chain reorganisation. - // You must pay attention to this field if you receive logs through a filter query. - Removed bool -} - -type rlpLog struct { - Address common.Address - Topics []common.Hash - Data []byte -} - -type rlpStorageLog struct { - Address common.Address - Topics []common.Hash - Data []byte - BlockNumber uint64 - TxHash common.Hash - TxIndex uint - BlockHash common.Hash - Index uint -} - -type jsonLog struct { - Address *common.Address `json:"address"` - Topics *[]common.Hash `json:"topics"` - Data *hexutil.Bytes `json:"data"` - BlockNumber *hexutil.Uint64 `json:"blockNumber"` - TxIndex *hexutil.Uint `json:"transactionIndex"` - TxHash *common.Hash `json:"transactionHash"` - BlockHash *common.Hash `json:"blockHash"` - Index *hexutil.Uint `json:"logIndex"` - Removed bool `json:"removed"` -} - -func NewLog(address common.Address, topics []common.Hash, data []byte, number uint64) *Log { - return &Log{Address: address, Topics: topics, Data: data, BlockNumber: number} -} - -// EncodeRLP implements rlp.Encoder. -func (l *Log) EncodeRLP(w io.Writer) error { - return rlp.Encode(w, rlpLog{Address: l.Address, Topics: l.Topics, Data: l.Data}) -} - -// DecodeRLP implements rlp.Decoder. -func (l *Log) DecodeRLP(s *rlp.Stream) error { - var dec rlpLog - err := s.Decode(&dec) - if err == nil { - l.Address, l.Topics, l.Data = dec.Address, dec.Topics, dec.Data - } - return err -} - -func (l *Log) String() string { - 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) -} - -// MarshalJSON implements json.Marshaler. -func (l *Log) MarshalJSON() ([]byte, error) { - jslog := &jsonLog{ - Address: &l.Address, - Topics: &l.Topics, - Data: (*hexutil.Bytes)(&l.Data), - TxIndex: (*hexutil.Uint)(&l.TxIndex), - TxHash: &l.TxHash, - Index: (*hexutil.Uint)(&l.Index), - Removed: l.Removed, - } - // Set block information for mined logs. - if (l.BlockHash != common.Hash{}) { - jslog.BlockHash = &l.BlockHash - jslog.BlockNumber = (*hexutil.Uint64)(&l.BlockNumber) - } - return json.Marshal(jslog) -} - -// UnmarshalJSON implements json.Umarshaler. -func (l *Log) UnmarshalJSON(input []byte) error { - var dec jsonLog - if err := json.Unmarshal(input, &dec); err != nil { - return err - } - if dec.Address == nil || dec.Topics == nil || dec.Data == nil || - dec.TxIndex == nil || dec.TxHash == nil || dec.Index == nil { - return errMissingLogFields - } - declog := Log{ - Address: *dec.Address, - Topics: *dec.Topics, - Data: *dec.Data, - TxHash: *dec.TxHash, - TxIndex: uint(*dec.TxIndex), - Index: uint(*dec.Index), - Removed: dec.Removed, - } - // Block information may be missing if the log is received through - // the pending log filter, so it's handled specially here. - if dec.BlockHash != nil && dec.BlockNumber != nil { - declog.BlockHash = *dec.BlockHash - declog.BlockNumber = uint64(*dec.BlockNumber) - } - *l = declog - return nil -} - -type Logs []*Log - -// LogForStorage is a wrapper around a Log that flattens and parses the entire content of -// a log including non-consensus fields. -type LogForStorage Log - -// EncodeRLP implements rlp.Encoder. -func (l *LogForStorage) EncodeRLP(w io.Writer) error { - return rlp.Encode(w, rlpStorageLog{ - Address: l.Address, - Topics: l.Topics, - Data: l.Data, - BlockNumber: l.BlockNumber, - TxHash: l.TxHash, - TxIndex: l.TxIndex, - BlockHash: l.BlockHash, - Index: l.Index, - }) -} - -// DecodeRLP implements rlp.Decoder. -func (l *LogForStorage) DecodeRLP(s *rlp.Stream) error { - var dec rlpStorageLog - err := s.Decode(&dec) - if err == nil { - *l = LogForStorage{ - Address: dec.Address, - Topics: dec.Topics, - Data: dec.Data, - BlockNumber: dec.BlockNumber, - TxHash: dec.TxHash, - TxIndex: dec.TxIndex, - BlockHash: dec.BlockHash, - Index: dec.Index, - } - } - return err -} |