83e4c49e2b
The PR makes use of the stacktrie, which is is more lenient on resource consumption, than the regular trie, in cases where we only need it for DeriveSha
265 lines
9.5 KiB
Go
265 lines
9.5 KiB
Go
// Copyright 2020 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 t8ntool
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import (
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"fmt"
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"math/big"
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"os"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/common/math"
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"github.com/ethereum/go-ethereum/consensus/misc"
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"github.com/ethereum/go-ethereum/core"
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"github.com/ethereum/go-ethereum/core/rawdb"
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"github.com/ethereum/go-ethereum/core/state"
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"github.com/ethereum/go-ethereum/core/types"
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"github.com/ethereum/go-ethereum/core/vm"
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"github.com/ethereum/go-ethereum/crypto"
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"github.com/ethereum/go-ethereum/ethdb"
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"github.com/ethereum/go-ethereum/log"
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"github.com/ethereum/go-ethereum/params"
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"github.com/ethereum/go-ethereum/rlp"
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"github.com/ethereum/go-ethereum/trie"
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"golang.org/x/crypto/sha3"
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)
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type Prestate struct {
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Env stEnv `json:"env"`
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Pre core.GenesisAlloc `json:"pre"`
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}
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// ExecutionResult contains the execution status after running a state test, any
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// error that might have occurred and a dump of the final state if requested.
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type ExecutionResult struct {
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StateRoot common.Hash `json:"stateRoot"`
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TxRoot common.Hash `json:"txRoot"`
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ReceiptRoot common.Hash `json:"receiptRoot"`
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LogsHash common.Hash `json:"logsHash"`
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Bloom types.Bloom `json:"logsBloom" gencodec:"required"`
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Receipts types.Receipts `json:"receipts"`
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Rejected []int `json:"rejected,omitempty"`
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}
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type ommer struct {
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Delta uint64 `json:"delta"`
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Address common.Address `json:"address"`
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}
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//go:generate gencodec -type stEnv -field-override stEnvMarshaling -out gen_stenv.go
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type stEnv struct {
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Coinbase common.Address `json:"currentCoinbase" gencodec:"required"`
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Difficulty *big.Int `json:"currentDifficulty" gencodec:"required"`
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GasLimit uint64 `json:"currentGasLimit" gencodec:"required"`
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Number uint64 `json:"currentNumber" gencodec:"required"`
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Timestamp uint64 `json:"currentTimestamp" gencodec:"required"`
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BlockHashes map[math.HexOrDecimal64]common.Hash `json:"blockHashes,omitempty"`
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Ommers []ommer `json:"ommers,omitempty"`
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}
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type stEnvMarshaling struct {
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Coinbase common.UnprefixedAddress
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Difficulty *math.HexOrDecimal256
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GasLimit math.HexOrDecimal64
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Number math.HexOrDecimal64
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Timestamp math.HexOrDecimal64
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}
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// Apply applies a set of transactions to a pre-state
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func (pre *Prestate) Apply(vmConfig vm.Config, chainConfig *params.ChainConfig,
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txs types.Transactions, miningReward int64,
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getTracerFn func(txIndex int, txHash common.Hash) (tracer vm.Tracer, err error)) (*state.StateDB, *ExecutionResult, error) {
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// Capture errors for BLOCKHASH operation, if we haven't been supplied the
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// required blockhashes
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var hashError error
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getHash := func(num uint64) common.Hash {
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if pre.Env.BlockHashes == nil {
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hashError = fmt.Errorf("getHash(%d) invoked, no blockhashes provided", num)
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return common.Hash{}
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}
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h, ok := pre.Env.BlockHashes[math.HexOrDecimal64(num)]
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if !ok {
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hashError = fmt.Errorf("getHash(%d) invoked, blockhash for that block not provided", num)
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}
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return h
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}
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var (
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statedb = MakePreState(rawdb.NewMemoryDatabase(), pre.Pre)
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signer = types.MakeSigner(chainConfig, new(big.Int).SetUint64(pre.Env.Number))
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gaspool = new(core.GasPool)
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blockHash = common.Hash{0x13, 0x37}
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rejectedTxs []int
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includedTxs types.Transactions
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gasUsed = uint64(0)
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receipts = make(types.Receipts, 0)
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txIndex = 0
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)
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gaspool.AddGas(pre.Env.GasLimit)
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vmContext := vm.BlockContext{
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CanTransfer: core.CanTransfer,
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Transfer: core.Transfer,
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Coinbase: pre.Env.Coinbase,
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BlockNumber: new(big.Int).SetUint64(pre.Env.Number),
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Time: new(big.Int).SetUint64(pre.Env.Timestamp),
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Difficulty: pre.Env.Difficulty,
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GasLimit: pre.Env.GasLimit,
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GetHash: getHash,
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}
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// If DAO is supported/enabled, we need to handle it here. In geth 'proper', it's
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// done in StateProcessor.Process(block, ...), right before transactions are applied.
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if chainConfig.DAOForkSupport &&
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chainConfig.DAOForkBlock != nil &&
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chainConfig.DAOForkBlock.Cmp(new(big.Int).SetUint64(pre.Env.Number)) == 0 {
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misc.ApplyDAOHardFork(statedb)
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}
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for i, tx := range txs {
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msg, err := tx.AsMessage(signer)
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if err != nil {
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log.Info("rejected tx", "index", i, "hash", tx.Hash(), "error", err)
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rejectedTxs = append(rejectedTxs, i)
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continue
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}
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tracer, err := getTracerFn(txIndex, tx.Hash())
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if err != nil {
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return nil, nil, err
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}
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vmConfig.Tracer = tracer
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vmConfig.Debug = (tracer != nil)
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statedb.Prepare(tx.Hash(), blockHash, txIndex)
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txContext := core.NewEVMTxContext(msg)
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evm := vm.NewEVM(vmContext, txContext, statedb, chainConfig, vmConfig)
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if chainConfig.IsYoloV3(vmContext.BlockNumber) {
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statedb.AddAddressToAccessList(msg.From())
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if dst := msg.To(); dst != nil {
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statedb.AddAddressToAccessList(*dst)
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// If it's a create-tx, the destination will be added inside evm.create
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}
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for _, addr := range evm.ActivePrecompiles() {
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statedb.AddAddressToAccessList(addr)
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}
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}
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snapshot := statedb.Snapshot()
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// (ret []byte, usedGas uint64, failed bool, err error)
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msgResult, err := core.ApplyMessage(evm, msg, gaspool)
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if err != nil {
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statedb.RevertToSnapshot(snapshot)
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log.Info("rejected tx", "index", i, "hash", tx.Hash(), "from", msg.From(), "error", err)
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rejectedTxs = append(rejectedTxs, i)
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continue
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}
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includedTxs = append(includedTxs, tx)
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if hashError != nil {
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return nil, nil, NewError(ErrorMissingBlockhash, hashError)
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}
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gasUsed += msgResult.UsedGas
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// Create a new receipt for the transaction, storing the intermediate root and gas used by the tx
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{
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var root []byte
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if chainConfig.IsByzantium(vmContext.BlockNumber) {
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statedb.Finalise(true)
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} else {
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root = statedb.IntermediateRoot(chainConfig.IsEIP158(vmContext.BlockNumber)).Bytes()
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}
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receipt := types.NewReceipt(root, msgResult.Failed(), gasUsed)
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receipt.TxHash = tx.Hash()
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receipt.GasUsed = msgResult.UsedGas
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// if the transaction created a contract, store the creation address in the receipt.
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if msg.To() == nil {
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receipt.ContractAddress = crypto.CreateAddress(evm.TxContext.Origin, tx.Nonce())
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}
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// Set the receipt logs and create a bloom for filtering
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receipt.Logs = statedb.GetLogs(tx.Hash())
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receipt.Bloom = types.CreateBloom(types.Receipts{receipt})
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// These three are non-consensus fields
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//receipt.BlockHash
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//receipt.BlockNumber =
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receipt.TransactionIndex = uint(txIndex)
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receipts = append(receipts, receipt)
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}
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txIndex++
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}
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statedb.IntermediateRoot(chainConfig.IsEIP158(vmContext.BlockNumber))
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// Add mining reward?
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if miningReward > 0 {
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// Add mining reward. The mining reward may be `0`, which only makes a difference in the cases
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// where
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// - the coinbase suicided, or
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// - there are only 'bad' transactions, which aren't executed. In those cases,
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// the coinbase gets no txfee, so isn't created, and thus needs to be touched
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var (
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blockReward = big.NewInt(miningReward)
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minerReward = new(big.Int).Set(blockReward)
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perOmmer = new(big.Int).Div(blockReward, big.NewInt(32))
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)
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for _, ommer := range pre.Env.Ommers {
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// Add 1/32th for each ommer included
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minerReward.Add(minerReward, perOmmer)
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// Add (8-delta)/8
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reward := big.NewInt(8)
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reward.Sub(reward, big.NewInt(0).SetUint64(ommer.Delta))
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reward.Mul(reward, blockReward)
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reward.Div(reward, big.NewInt(8))
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statedb.AddBalance(ommer.Address, reward)
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}
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statedb.AddBalance(pre.Env.Coinbase, minerReward)
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}
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// Commit block
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root, err := statedb.Commit(chainConfig.IsEIP158(vmContext.BlockNumber))
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if err != nil {
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fmt.Fprintf(os.Stderr, "Could not commit state: %v", err)
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return nil, nil, NewError(ErrorEVM, fmt.Errorf("could not commit state: %v", err))
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}
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execRs := &ExecutionResult{
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StateRoot: root,
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TxRoot: types.DeriveSha(includedTxs, trie.NewStackTrie(nil)),
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ReceiptRoot: types.DeriveSha(receipts, trie.NewStackTrie(nil)),
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Bloom: types.CreateBloom(receipts),
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LogsHash: rlpHash(statedb.Logs()),
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Receipts: receipts,
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Rejected: rejectedTxs,
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}
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return statedb, execRs, nil
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}
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func MakePreState(db ethdb.Database, accounts core.GenesisAlloc) *state.StateDB {
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sdb := state.NewDatabase(db)
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statedb, _ := state.New(common.Hash{}, sdb, nil)
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for addr, a := range accounts {
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statedb.SetCode(addr, a.Code)
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statedb.SetNonce(addr, a.Nonce)
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statedb.SetBalance(addr, a.Balance)
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for k, v := range a.Storage {
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statedb.SetState(addr, k, v)
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}
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}
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// Commit and re-open to start with a clean state.
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root, _ := statedb.Commit(false)
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statedb, _ = state.New(root, sdb, nil)
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return statedb
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}
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func rlpHash(x interface{}) (h common.Hash) {
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hw := sha3.NewLegacyKeccak256()
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rlp.Encode(hw, x)
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hw.Sum(h[:0])
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return h
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}
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