Official Go implementation of the Ethereum protocol
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go-ethereum/trie/triestate/state.go

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// Copyright 2023 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 triestate
import "github.com/ethereum/go-ethereum/common"
// Set represents a collection of mutated states during a state transition.
// The value refers to the original content of state before the transition
// is made. Nil means that the state was not present previously.
type Set struct {
Accounts map[common.Address][]byte // Mutated account set, nil means the account was not present
Storages map[common.Address]map[common.Hash][]byte // Mutated storage set, nil means the slot was not present
size common.StorageSize // Approximate size of set
}
// New constructs the state set with provided data.
func New(accounts map[common.Address][]byte, storages map[common.Address]map[common.Hash][]byte) *Set {
return &Set{
Accounts: accounts,
Storages: storages,
}
}
// Size returns the approximate memory size occupied by the set.
func (s *Set) Size() common.StorageSize {
if s.size != 0 {
return s.size
}
for _, account := range s.Accounts {
s.size += common.StorageSize(common.AddressLength + len(account))
}
for _, slots := range s.Storages {
for _, val := range slots {
s.size += common.StorageSize(common.HashLength + len(val))
}
s.size += common.StorageSize(common.AddressLength)
}
return s.size
}