github.com/Debrief-BC/go-debrief@v0.0.0-20200420203408-0c26ca968123/core/state/snapshot/account.go (about) 1 // Copyright 2019 The go-ethereum Authors 2 // This file is part of the go-ethereum library. 3 // 4 // The go-ethereum library is free software: you can redistribute it and/or modify 5 // it under the terms of the GNU Lesser General Public License as published by 6 // the Free Software Foundation, either version 3 of the License, or 7 // (at your option) any later version. 8 // 9 // The go-ethereum library is distributed in the hope that it will be useful, 10 // but WITHOUT ANY WARRANTY; without even the implied warranty of 11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 // GNU Lesser General Public License for more details. 13 // 14 // You should have received a copy of the GNU Lesser General Public License 15 // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>. 16 17 package snapshot 18 19 import ( 20 "bytes" 21 "math/big" 22 23 "github.com/Debrief-BC/go-debrief/common" 24 "github.com/Debrief-BC/go-debrief/rlp" 25 ) 26 27 // Account is a slim version of a state.Account, where the root and code hash 28 // are replaced with a nil byte slice for empty accounts. 29 type Account struct { 30 Nonce uint64 31 Balance *big.Int 32 Root []byte 33 CodeHash []byte 34 } 35 36 // AccountRLP converts a state.Account content into a slim snapshot version RLP 37 // encoded. 38 func AccountRLP(nonce uint64, balance *big.Int, root common.Hash, codehash []byte) []byte { 39 slim := Account{ 40 Nonce: nonce, 41 Balance: balance, 42 } 43 if root != emptyRoot { 44 slim.Root = root[:] 45 } 46 if !bytes.Equal(codehash, emptyCode[:]) { 47 slim.CodeHash = codehash 48 } 49 data, err := rlp.EncodeToBytes(slim) 50 if err != nil { 51 panic(err) 52 } 53 return data 54 }