mirror of
https://github.com/ethereum/go-ethereum.git
synced 2026-08-20 10:52:25 +00:00
159 lines
7 KiB
Go
159 lines
7 KiB
Go
// Copyright 2016 The go-ethereum Authors
|
|
// This file is part of the go-ethereum library.
|
|
//
|
|
// The go-ethereum library 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 go-ethereum library is 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 go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
package vm
|
|
|
|
import (
|
|
"math/big"
|
|
|
|
"github.com/ethereum/go-ethereum/common"
|
|
"github.com/ethereum/go-ethereum/core/types"
|
|
"github.com/ethereum/go-ethereum/params"
|
|
)
|
|
|
|
// StateDB is an EVM database for full state querying.
|
|
type StateDB interface {
|
|
// CreateAccount creates a new account
|
|
//
|
|
// If an account already exists at the address, it should transfer the balance of the old
|
|
// address to the new one.
|
|
CreateAccount(common.Address)
|
|
|
|
// SubBalance subtracts the amount from the address's balance
|
|
SubBalance(common.Address, *big.Int)
|
|
// AddBalance adds the amount to the address's balance
|
|
AddBalance(common.Address, *big.Int)
|
|
// GetBalance returns the balance for the given address
|
|
//
|
|
// For non-existent addresses it should returns zero
|
|
// For self-destructed addresses (during the tx execution) it should return zero
|
|
GetBalance(common.Address) *big.Int
|
|
|
|
// GetNonce returns the nonce for the given address
|
|
//
|
|
// For non-existent addresses it should returns zero
|
|
GetNonce(common.Address) uint64
|
|
// SetNonce sets the nonce for the given address
|
|
SetNonce(common.Address, uint64)
|
|
|
|
// GetCodeHash returns the codeHash for the given address
|
|
//
|
|
// For non-existent addresses or addresses without a code (EOAs) it should returns types.EmptyCodeHash
|
|
GetCodeHash(common.Address) common.Hash
|
|
// GetCode returns the code for the given address,
|
|
//
|
|
// For non-existent addresses or addresses without a code (EOAs) it should returns nil
|
|
GetCode(common.Address) []byte
|
|
// SetCode sets the code for the given address
|
|
SetCode(common.Address, []byte)
|
|
// GetCodeSize returns the size of the code for the given address
|
|
//
|
|
// For non-existent addresses or addresses without a code (EOAs) it should returns zero
|
|
GetCodeSize(common.Address) int
|
|
|
|
// AddRefund adds the amount to the total (gas) refund
|
|
AddRefund(uint64)
|
|
// SubRefund subtracts the amount from the total (gas) refund
|
|
SubRefund(uint64)
|
|
// GetRefund returns the total (gas) refund
|
|
GetRefund() uint64
|
|
|
|
// GetCommittedState returns the value for the given (address, key) pair (aka slot) using committed state only
|
|
//
|
|
// For non-existent addresses or non-existent keys it should return empty hash (common.Hash{})
|
|
GetCommittedState(addr common.Address, key common.Hash) common.Hash
|
|
// GetState returns the value for the given (address, key) pair (aka slot) including recent changes
|
|
//
|
|
// For non-existent addresses or non-existent keys it should return empty hash (common.Hash{})
|
|
GetState(addr common.Address, key common.Hash) common.Hash
|
|
// SetState sets a value for the given (address, key) pair (aka slot)
|
|
//
|
|
// If a value already exist at the given pair, it should be replaced.
|
|
SetState(addr common.Address, key common.Hash, value common.Hash)
|
|
|
|
// GetCommittedState returns the value for the given (address, key) pair (aka slot) in the transient state
|
|
//
|
|
// check EIP-1153 for information about transient state
|
|
GetTransientState(addr common.Address, key common.Hash) common.Hash
|
|
// SetTransientState sets a value for the given (address, key) pair (aka slot) in the transient state
|
|
//
|
|
// check EIP-1153 for information about transient state
|
|
SetTransientState(addr common.Address, key, value common.Hash)
|
|
|
|
// SelfDestruct flags an address for destruction at the end of a transaction
|
|
SelfDestruct(common.Address)
|
|
// HasSelfDestructed returns true if address has been flaged for destruction (during this transaction)
|
|
HasSelfDestructed(common.Address) bool
|
|
|
|
// Selfdestruct6780 implements the logic of self destruct according to the EIP-6700
|
|
Selfdestruct6780(common.Address)
|
|
|
|
// Exist reports whether the given account exists in state.
|
|
// Notably this should also return true for self-destructed accounts.
|
|
Exist(common.Address) bool
|
|
// Empty returns whether the given account is empty. Empty
|
|
// is defined according to EIP-161 (balance = nonce = code = 0).
|
|
Empty(common.Address) bool
|
|
|
|
// AddressInAccessList checks if an address is in the access list
|
|
//
|
|
// See EIP-2930 for more details
|
|
AddressInAccessList(addr common.Address) bool
|
|
// SlotInAccessList checks if an slot is in the access list
|
|
//
|
|
// See EIP-2930 for more details
|
|
SlotInAccessList(addr common.Address, slot common.Hash) (addressOk bool, slotOk bool)
|
|
// AddAddressToAccessList adds the given address to the access list. This operation is safe to perform
|
|
// even if the feature/fork is not active yet
|
|
//
|
|
// See EIP-2930 for more details
|
|
AddAddressToAccessList(addr common.Address)
|
|
// AddSlotToAccessList adds the given (address,slot) to the access list. This operation is safe to perform
|
|
// even if the feature/fork is not active yet
|
|
//
|
|
// See EIP-2930 for more details
|
|
AddSlotToAccessList(addr common.Address, slot common.Hash)
|
|
|
|
// Prepare prepares the storage for the next transaction
|
|
// it resets the access list and transient storage,
|
|
// it also adds addresses and slots to the list based on the rules of the network.
|
|
Prepare(rules params.Rules, sender, coinbase common.Address, dest *common.Address, precompiles []common.Address, txAccesses types.AccessList)
|
|
|
|
// RevertToSnapshot reverts the state to an specific snapshot
|
|
RevertToSnapshot(int)
|
|
// Snapshot takes a snapshot and returns an integer that can be used later with RevertToSnapshot
|
|
//
|
|
// Nested snapshoting should be supported.
|
|
Snapshot() int
|
|
|
|
// AddLog appends a log to transaction's log collection
|
|
AddLog(*types.Log)
|
|
// AddPreimage adds a preimage to the map of preimages
|
|
AddPreimage(hash common.Hash, preimage []byte)
|
|
}
|
|
|
|
// CallContext provides a basic interface for the EVM calling conventions. The EVM
|
|
// depends on this context being implemented for doing subcalls and initialising new EVM contracts.
|
|
type CallContext interface {
|
|
// Call calls another contract.
|
|
Call(env *EVM, me ContractRef, addr common.Address, data []byte, gas, value *big.Int) ([]byte, error)
|
|
// CallCode takes another contracts code and execute within our own context
|
|
CallCode(env *EVM, me ContractRef, addr common.Address, data []byte, gas, value *big.Int) ([]byte, error)
|
|
// DelegateCall is same as CallCode except sender and value is propagated from parent to child scope
|
|
DelegateCall(env *EVM, me ContractRef, addr common.Address, data []byte, gas *big.Int) ([]byte, error)
|
|
// Create creates a new contract
|
|
Create(env *EVM, me ContractRef, data []byte, gas, value *big.Int) ([]byte, common.Address, error)
|
|
}
|