98 lines
2.9 KiB
Go
98 lines
2.9 KiB
Go
package types
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import (
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sdk "github.com/cosmos/cosmos-sdk/types"
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ethcmn "github.com/ethereum/go-ethereum/common"
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ethcrypto "github.com/ethereum/go-ethereum/crypto"
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)
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const (
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// ModuleName string name of module
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ModuleName = "evm"
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// StoreKey key for ethereum storage data, account code (StateDB) or block
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// related data for Web3.
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// The EVM module should use a prefix store.
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StoreKey = ModuleName
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// Transient Key is the key to access the EVM transient store, that is reset
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// during the Commit phase.
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TransientKey = "transient_" + ModuleName
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// RouterKey uses module name for routing
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RouterKey = ModuleName
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)
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// prefix bytes for the EVM persistent store
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const (
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prefixHeightToHeaderHash = iota + 1
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prefixBloom
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prefixLogs
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prefixCode
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prefixStorage
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)
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// prefix bytes for the EVM transient store
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const (
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prefixTransientSuicided = iota + 1
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prefixTransientBloom
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prefixTransientTxIndex
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prefixTransientRefund
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prefixTransientAccessListAddress
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prefixTransientAccessListSlot
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prefixTransientTxHash
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prefixTransientLogSize
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)
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// KVStore key prefixes
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var (
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KeyPrefixHeightToHeaderHash = []byte{prefixHeightToHeaderHash}
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KeyPrefixBloom = []byte{prefixBloom}
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KeyPrefixLogs = []byte{prefixLogs}
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KeyPrefixCode = []byte{prefixCode}
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KeyPrefixStorage = []byte{prefixStorage}
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)
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// Transient Store key prefixes
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var (
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KeyPrefixTransientSuicided = []byte{prefixTransientSuicided}
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KeyPrefixTransientBloom = []byte{prefixTransientBloom}
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KeyPrefixTransientTxIndex = []byte{prefixTransientTxIndex}
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KeyPrefixTransientRefund = []byte{prefixTransientRefund}
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KeyPrefixTransientAccessListAddress = []byte{prefixTransientAccessListAddress}
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KeyPrefixTransientAccessListSlot = []byte{prefixTransientAccessListSlot}
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KeyPrefixTransientTxHash = []byte{prefixTransientTxHash}
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KeyPrefixTransientLogSize = []byte{prefixTransientLogSize}
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)
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// BloomKey defines the store key for a block Bloom
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func BloomKey(height int64) []byte {
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heightBytes := sdk.Uint64ToBigEndian(uint64(height))
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return append(KeyPrefixBloom, heightBytes...)
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}
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// AddressStoragePrefix returns a prefix to iterate over a given account storage.
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func AddressStoragePrefix(address ethcmn.Address) []byte {
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return append(KeyPrefixStorage, address.Bytes()...)
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}
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// StateKey defines the full key under which an account state is stored.
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func StateKey(address ethcmn.Address, key []byte) []byte {
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return append(AddressStoragePrefix(address), key...)
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}
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// KeyAddressStorage returns the key hash to access a given account state. The composite key
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// (address + hash) is hashed using Keccak256.
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func KeyAddressStorage(address ethcmn.Address, hash ethcmn.Hash) ethcmn.Hash {
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prefix := address.Bytes()
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key := hash.Bytes()
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compositeKey := make([]byte, len(prefix)+len(key))
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copy(compositeKey, prefix)
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copy(compositeKey[len(prefix):], key)
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return ethcrypto.Keccak256Hash(compositeKey)
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}
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