49 lines
2.1 KiB
Go
49 lines
2.1 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 statedb
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import (
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sdk "github.com/cosmos/cosmos-sdk/types"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/core/vm"
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)
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// ExtStateDB defines an extension to the interface provided by the go-ethereum
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// codebase to support additional state transition functionalities. In particular
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// it supports appending a new entry to the state journal through
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// AppendJournalEntry so that the state can be reverted after running
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// stateful precompiled contracts.
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type ExtStateDB interface {
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vm.StateDB
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AppendJournalEntry(JournalEntry)
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}
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// Keeper provide underlying storage of StateDB
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type Keeper interface {
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// Read methods
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GetAccount(ctx sdk.Context, addr common.Address) *Account
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GetState(ctx sdk.Context, addr common.Address, key common.Hash) common.Hash
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GetCode(ctx sdk.Context, codeHash common.Hash) []byte
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// the callback returns false to break early
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ForEachStorage(ctx sdk.Context, addr common.Address, cb func(key, value common.Hash) bool)
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// Write methods, only called by `StateDB.Commit()`
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SetAccount(ctx sdk.Context, addr common.Address, account Account) error
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SetState(ctx sdk.Context, addr common.Address, key common.Hash, value []byte)
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SetCode(ctx sdk.Context, codeHash []byte, code []byte)
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DeleteAccount(ctx sdk.Context, addr common.Address) error
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}
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