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key.go
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key.go
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// Copyright 2022 Evmos Foundation
// This file is part of the Evmos Network packages.
//
// Evmos 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 Evmos packages are 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 Evmos packages. If not, see https://github.com/evmos/evmos/blob/main/LICENSE
package types
import (
"github.com/ethereum/go-ethereum/common"
)
const (
// ModuleName string name of module
ModuleName = "evm"
// StoreKey key for ethereum storage data, account code (StateDB) or block
// related data for Web3.
// The EVM module should use a prefix store.
StoreKey = ModuleName
// TransientKey is the key to access the EVM transient store, that is reset
// during the Commit phase.
TransientKey = "transient_" + ModuleName
// RouterKey uses module name for routing
RouterKey = ModuleName
)
// prefix bytes for the EVM persistent store
const (
prefixCode = iota + 1
prefixStorage
prefixParams
)
// prefix bytes for the EVM transient store
const (
prefixTransientBloom = iota + 1
prefixTransientTxIndex
prefixTransientLogSize
prefixTransientGasUsed
)
// KVStore key prefixes
var (
KeyPrefixCode = []byte{prefixCode}
KeyPrefixStorage = []byte{prefixStorage}
KeyPrefixParams = []byte{prefixParams}
)
// Transient Store key prefixes
var (
KeyPrefixTransientBloom = []byte{prefixTransientBloom}
KeyPrefixTransientTxIndex = []byte{prefixTransientTxIndex}
KeyPrefixTransientLogSize = []byte{prefixTransientLogSize}
KeyPrefixTransientGasUsed = []byte{prefixTransientGasUsed}
)
// AddressStoragePrefix returns a prefix to iterate over a given account storage.
func AddressStoragePrefix(address common.Address) []byte {
return append(KeyPrefixStorage, address.Bytes()...)
}
// StateKey defines the full key under which an account state is stored.
func StateKey(address common.Address, key []byte) []byte {
return append(AddressStoragePrefix(address), key...)
}