55 lines
1.6 KiB
Go
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
|
||
|
|
}
|