mirror of
https://github.com/ethereum/go-ethereum.git
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2414861d36
Optimizes the transient storage. Turns it from a map of maps into a single map keyed by <account,slot>.
83 lines
2.5 KiB
Go
83 lines
2.5 KiB
Go
// Copyright 2022 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 state
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import (
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"fmt"
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"maps"
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"slices"
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"strings"
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"github.com/ethereum/go-ethereum/common"
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)
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type transientStorageKey struct {
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addr common.Address
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key common.Hash
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}
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// transientStorage is a representation of EIP-1153 "Transient Storage".
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type transientStorage map[transientStorageKey]common.Hash
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// newTransientStorage creates a new instance of a transientStorage.
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func newTransientStorage() transientStorage {
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return make(transientStorage)
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}
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// Set sets the transient-storage `value` for `key` at the given `addr`.
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func (t transientStorage) Set(addr common.Address, key, value common.Hash) {
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tsKey := transientStorageKey{addr: addr, key: key}
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if value == (common.Hash{}) { // this is a 'delete'
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delete(t, tsKey)
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} else {
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t[tsKey] = value
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}
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}
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// Get gets the transient storage for `key` at the given `addr`.
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func (t transientStorage) Get(addr common.Address, key common.Hash) common.Hash {
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tsKey := transientStorageKey{addr: addr, key: key}
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return t[tsKey]
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}
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// Copy does a deep copy of the transientStorage
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func (t transientStorage) Copy() transientStorage {
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return maps.Clone(t)
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}
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// PrettyPrint prints the contents of the access list in a human-readable form
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func (t transientStorage) PrettyPrint() string {
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out := new(strings.Builder)
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sortedTSKeys := slices.Collect(maps.Keys(t))
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slices.SortFunc(sortedTSKeys, func(a, b transientStorageKey) int {
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r := a.addr.Cmp(b.addr)
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if r != 0 {
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return r
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}
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return a.key.Cmp(b.key)
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})
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for i := 0; i < len(sortedTSKeys); {
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tsKey := sortedTSKeys[i]
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fmt.Fprintf(out, "%#x:", tsKey.addr)
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for ; i < len(sortedTSKeys) && sortedTSKeys[i].addr == tsKey.addr; i++ {
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tsKey2 := sortedTSKeys[i]
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fmt.Fprintf(out, " %X : %X\n", tsKey2.key, t[tsKey2])
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}
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}
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return out.String()
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}
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