98 lines
3.2 KiB
Go
98 lines
3.2 KiB
Go
// Copyright 2021 Evmos Foundation
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// This file is part of Evmos' Ethermint library.
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//
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// The Ethermint 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 Ethermint 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 Ethermint library. If not, see https://github.com/evmos/ethermint/blob/main/LICENSE
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package types
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import (
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"bytes"
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codectypes "github.com/cosmos/cosmos-sdk/codec/types"
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authtypes "github.com/cosmos/cosmos-sdk/x/auth/types"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/crypto"
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)
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var (
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_ authtypes.AccountI = (*EthAccount)(nil)
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_ EthAccountI = (*EthAccount)(nil)
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_ authtypes.GenesisAccount = (*EthAccount)(nil)
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_ codectypes.UnpackInterfacesMessage = (*EthAccount)(nil)
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)
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var emptyCodeHash = crypto.Keccak256(nil)
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const (
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// AccountTypeEOA defines the type for externally owned accounts (EOAs)
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AccountTypeEOA = int8(iota + 1)
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// AccountTypeContract defines the type for contract accounts
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AccountTypeContract
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)
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// EthAccountI represents the interface of an EVM compatible account
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type EthAccountI interface {
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authtypes.AccountI
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// EthAddress returns the ethereum Address representation of the AccAddress
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EthAddress() common.Address
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// CodeHash is the keccak256 hash of the contract code (if any)
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GetCodeHash() common.Hash
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// SetCodeHash sets the code hash to the account fields
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SetCodeHash(code common.Hash) error
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// Type returns the type of Ethereum Account (EOA or Contract)
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Type() int8
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}
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// ----------------------------------------------------------------------------
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// Main Ethermint account
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// ----------------------------------------------------------------------------
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// ProtoAccount defines the prototype function for BaseAccount used for an
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// AccountKeeper.
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func ProtoAccount() authtypes.AccountI {
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return &EthAccount{
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BaseAccount: &authtypes.BaseAccount{},
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CodeHash: common.BytesToHash(emptyCodeHash).String(),
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}
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}
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// GetBaseAccount returns base account.
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func (acc EthAccount) GetBaseAccount() *authtypes.BaseAccount {
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return acc.BaseAccount
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}
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// EthAddress returns the account address ethereum format.
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func (acc EthAccount) EthAddress() common.Address {
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return common.BytesToAddress(acc.GetAddress().Bytes())
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}
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// GetCodeHash returns the account code hash in byte format
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func (acc EthAccount) GetCodeHash() common.Hash {
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return common.HexToHash(acc.CodeHash)
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}
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// SetCodeHash sets the account code hash to the EthAccount fields
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func (acc *EthAccount) SetCodeHash(codeHash common.Hash) error {
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acc.CodeHash = codeHash.Hex()
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return nil
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}
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// Type returns the type of Ethereum Account (EOA or Contract)
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func (acc EthAccount) Type() int8 {
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if bytes.Equal(emptyCodeHash, common.HexToHash(acc.CodeHash).Bytes()) {
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return AccountTypeEOA
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}
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return AccountTypeContract
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}
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