plugeth/core/state/snapshot/account.go
2020-02-25 12:51:04 +02:00

55 lines
1.6 KiB
Go

// Copyright 2019 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 snapshot
import (
"bytes"
"math/big"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/rlp"
)
// Account is a slim version of a state.Account, where the root and code hash
// are replaced with a nil byte slice for empty accounts.
type Account struct {
Nonce uint64
Balance *big.Int
Root []byte
CodeHash []byte
}
// AccountRLP converts a state.Account content into a slim snapshot version RLP
// encoded.
func AccountRLP(nonce uint64, balance *big.Int, root common.Hash, codehash []byte) []byte {
slim := Account{
Nonce: nonce,
Balance: balance,
}
if root != emptyRoot {
slim.Root = root[:]
}
if !bytes.Equal(codehash, emptyCode[:]) {
slim.CodeHash = codehash
}
data, err := rlp.EncodeToBytes(slim)
if err != nil {
panic(err)
}
return data
}