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