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54 lines
1.6 KiB
54 lines
1.6 KiB
// 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 slim version of a state.Account, where the root and code hash
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// are replaced with a nil byte slice for empty accounts.
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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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// AccountRLP converts a state.Account content into a slim snapshot version RLP
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// encoded.
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func AccountRLP(nonce uint64, balance *big.Int, root common.Hash, codehash []byte) []byte {
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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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data, err := rlp.EncodeToBytes(slim)
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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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