1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
|
// Copyright 2016 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 state
import (
"math/big"
"github.com/ethereum/go-ethereum/common"
)
type journalEntry interface {
undo(*StateDB)
}
type journal []journalEntry
type (
// Changes to the account trie.
createObjectChange struct {
account *common.Address
}
resetObjectChange struct {
prev *stateObject
}
suicideChange struct {
account *common.Address
prev bool // whether account had already suicided
prevbalance *big.Int
}
// Changes to individual accounts.
balanceChange struct {
account *common.Address
prev *big.Int
}
nonceChange struct {
account *common.Address
prev uint64
}
storageChange struct {
account *common.Address
key, prevalue common.Hash
}
codeChange struct {
account *common.Address
prevcode, prevhash []byte
}
// Changes to other state values.
refundChange struct {
prev *big.Int
}
addLogChange struct {
txhash common.Hash
}
addPreimageChange struct {
hash common.Hash
}
touchChange struct {
account *common.Address
prev bool
prevDirty bool
}
)
func (ch createObjectChange) undo(s *StateDB) {
delete(s.stateObjects, *ch.account)
delete(s.stateObjectsDirty, *ch.account)
}
func (ch resetObjectChange) undo(s *StateDB) {
s.setStateObject(ch.prev)
}
func (ch suicideChange) undo(s *StateDB) {
obj := s.getStateObject(*ch.account)
if obj != nil {
obj.suicided = ch.prev
obj.setBalance(ch.prevbalance)
// if the object wasn't suicided before, remove
// it from the list of destructed objects as well.
if !obj.suicided {
delete(s.stateObjectsDestructed, *ch.account)
}
}
}
var ripemd = common.HexToAddress("0000000000000000000000000000000000000003")
func (ch touchChange) undo(s *StateDB) {
if !ch.prev && *ch.account != ripemd {
s.getStateObject(*ch.account).touched = ch.prev
if !ch.prevDirty {
delete(s.stateObjectsDirty, *ch.account)
}
}
}
func (ch balanceChange) undo(s *StateDB) {
s.getStateObject(*ch.account).setBalance(ch.prev)
}
func (ch nonceChange) undo(s *StateDB) {
s.getStateObject(*ch.account).setNonce(ch.prev)
}
func (ch codeChange) undo(s *StateDB) {
s.getStateObject(*ch.account).setCode(common.BytesToHash(ch.prevhash), ch.prevcode)
}
func (ch storageChange) undo(s *StateDB) {
s.getStateObject(*ch.account).setState(ch.key, ch.prevalue)
}
func (ch refundChange) undo(s *StateDB) {
s.refund = ch.prev
}
func (ch addLogChange) undo(s *StateDB) {
logs := s.logs[ch.txhash]
if len(logs) == 1 {
delete(s.logs, ch.txhash)
} else {
s.logs[ch.txhash] = logs[:len(logs)-1]
}
}
func (ch addPreimageChange) undo(s *StateDB) {
delete(s.preimages, ch.hash)
}
|
