forked from cerc-io/plugeth
26d271dfbb
* core/state/snapshot: implement storage iterator * core/state/snapshot, tests: implement helper function * core/state/snapshot: fix storage issue If an account is deleted in the tx_1 but recreated in the tx_2, the it can happen that in this diff layer, both destructedSet and storageData records this account. In this case, the storage iterator should be able to iterate the slots belong to new account but disable further iteration in deeper layers(belong to old account) * core/state/snapshot: address peter and martin's comment * core/state: address comments * core/state/snapshot: fix test
87 lines
2.6 KiB
Go
87 lines
2.6 KiB
Go
// Copyright 2019 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 snapshot
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import (
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"bytes"
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"math/big"
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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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// Account is a modified version of a state.Account, where the root is replaced
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// with a byte slice. This format can be used to represent full-consensus format
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// or slim-snapshot format which replaces the empty root and code hash as nil
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// byte slice.
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type Account struct {
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Nonce uint64
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Balance *big.Int
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Root []byte
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CodeHash []byte
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}
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// SlimAccount converts a state.Account content into a slim snapshot account
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func SlimAccount(nonce uint64, balance *big.Int, root common.Hash, codehash []byte) Account {
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slim := Account{
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Nonce: nonce,
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Balance: balance,
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}
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if root != emptyRoot {
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slim.Root = root[:]
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}
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if !bytes.Equal(codehash, emptyCode[:]) {
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slim.CodeHash = codehash
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}
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return slim
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}
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// SlimAccountRLP converts a state.Account content into a slim snapshot
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// version RLP encoded.
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func SlimAccountRLP(nonce uint64, balance *big.Int, root common.Hash, codehash []byte) []byte {
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data, err := rlp.EncodeToBytes(SlimAccount(nonce, balance, root, codehash))
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if err != nil {
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panic(err)
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}
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return data
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}
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// FullAccount decodes the data on the 'slim RLP' format and return
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// the consensus format account.
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func FullAccount(data []byte) (Account, error) {
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var account Account
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if err := rlp.DecodeBytes(data, &account); err != nil {
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return Account{}, err
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}
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if len(account.Root) == 0 {
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account.Root = emptyRoot[:]
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}
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if len(account.CodeHash) == 0 {
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account.CodeHash = emptyCode[:]
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}
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return account, nil
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}
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// FullAccountRLP converts data on the 'slim RLP' format into the full RLP-format.
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func FullAccountRLP(data []byte) ([]byte, error) {
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account, err := FullAccount(data)
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if err != nil {
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return nil, err
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}
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return rlp.EncodeToBytes(account)
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}
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