137 lines
3.1 KiB
Go
137 lines
3.1 KiB
Go
// Copyright 2016 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 state
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import (
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"math/big"
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"github.com/ethereum/go-ethereum/common"
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)
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type journalEntry interface {
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undo(*StateDB)
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}
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type journal []journalEntry
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type (
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// Changes to the account trie.
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createObjectChange struct {
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account *common.Address
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}
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resetObjectChange struct {
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prev *StateObject
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}
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suicideChange struct {
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account *common.Address
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prev bool // whether account had already suicided
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prevbalance *big.Int
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}
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// Changes to individual accounts.
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balanceChange struct {
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account *common.Address
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prev *big.Int
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}
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nonceChange struct {
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account *common.Address
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prev uint64
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}
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storageChange struct {
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account *common.Address
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key, prevalue common.Hash
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}
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codeChange struct {
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account *common.Address
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prevcode, prevhash []byte
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}
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// Changes to other state values.
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refundChange struct {
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prev *big.Int
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}
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addLogChange struct {
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txhash common.Hash
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}
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addPreimageChange struct {
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hash common.Hash
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}
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touchChange struct {
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account *common.Address
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prev bool
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}
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)
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func (ch createObjectChange) undo(s *StateDB) {
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delete(s.stateObjects, *ch.account)
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delete(s.stateObjectsDirty, *ch.account)
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}
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func (ch resetObjectChange) undo(s *StateDB) {
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s.setStateObject(ch.prev)
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}
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func (ch suicideChange) undo(s *StateDB) {
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obj := s.GetStateObject(*ch.account)
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if obj != nil {
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obj.suicided = ch.prev
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obj.setBalance(ch.prevbalance)
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}
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}
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var ripemd = common.HexToAddress("0000000000000000000000000000000000000003")
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func (ch touchChange) undo(s *StateDB) {
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if !ch.prev && *ch.account != ripemd {
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delete(s.stateObjects, *ch.account)
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delete(s.stateObjectsDirty, *ch.account)
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}
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}
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func (ch balanceChange) undo(s *StateDB) {
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s.GetStateObject(*ch.account).setBalance(ch.prev)
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}
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func (ch nonceChange) undo(s *StateDB) {
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s.GetStateObject(*ch.account).setNonce(ch.prev)
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}
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func (ch codeChange) undo(s *StateDB) {
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s.GetStateObject(*ch.account).setCode(common.BytesToHash(ch.prevhash), ch.prevcode)
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}
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func (ch storageChange) undo(s *StateDB) {
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s.GetStateObject(*ch.account).setState(ch.key, ch.prevalue)
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}
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func (ch refundChange) undo(s *StateDB) {
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s.refund = ch.prev
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}
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func (ch addLogChange) undo(s *StateDB) {
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logs := s.logs[ch.txhash]
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if len(logs) == 1 {
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delete(s.logs, ch.txhash)
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} else {
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s.logs[ch.txhash] = logs[:len(logs)-1]
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}
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}
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func (ch addPreimageChange) undo(s *StateDB) {
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delete(s.preimages, ch.hash)
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}
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