98 lines
3.4 KiB
Go
98 lines
3.4 KiB
Go
|
// Copyright 2014 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"
|
||
|
|
)
|
||
|
|
|
||
|
|
// Vm is the basic interface for an implementation of the EVM.
|
||
|
|
type Vm interface {
|
||
|
|
// Run should execute the given contract with the input given in in
|
||
|
|
// and return the contract execution return bytes or an error if it
|
||
|
|
// failed.
|
||
|
|
Run(c *Contract, in []byte) ([]byte, error)
|
||
|
|
}
|
||
|
|
|
||
|
|
// StateDB is an EVM database for full state querying.
|
||
|
|
type StateDB interface {
|
||
|
|
GetAccount(common.Address) Account
|
||
|
|
CreateAccount(common.Address) Account
|
||
|
|
|
||
|
|
SubBalance(common.Address, *big.Int)
|
||
|
|
AddBalance(common.Address, *big.Int)
|
||
|
|
GetBalance(common.Address) *big.Int
|
||
|
|
|
||
|
|
GetNonce(common.Address) uint64
|
||
|
|
SetNonce(common.Address, uint64)
|
||
|
|
|
||
|
|
GetCodeHash(common.Address) common.Hash
|
||
|
|
GetCode(common.Address) []byte
|
||
|
|
SetCode(common.Address, []byte)
|
||
|
|
GetCodeSize(common.Address) int
|
||
|
|
|
||
|
|
AddRefund(*big.Int)
|
||
|
|
GetRefund() *big.Int
|
||
|
|
|
||
|
|
GetState(common.Address, common.Hash) common.Hash
|
||
|
|
SetState(common.Address, common.Hash, common.Hash)
|
||
|
|
|
||
|
|
Suicide(common.Address) bool
|
||
|
|
HasSuicided(common.Address) bool
|
||
|
|
|
||
|
|
// Exist reports whether the given account exists in state.
|
||
|
|
// Notably this should also return true for suicided accounts.
|
||
|
|
Exist(common.Address) bool
|
||
|
|
// Empty returns whether the given account is empty. Empty
|
||
|
|
// is defined according to EIP161 (balance = nonce = code = 0).
|
||
|
|
Empty(common.Address) bool
|
||
|
|
|
||
|
|
RevertToSnapshot(int)
|
||
|
|
Snapshot() int
|
||
|
|
|
||
|
|
AddLog(*Log)
|
||
|
|
}
|
||
|
|
|
||
|
|
// Account represents a contract or basic ethereum account.
|
||
|
|
type Account interface {
|
||
|
|
SubBalance(amount *big.Int)
|
||
|
|
AddBalance(amount *big.Int)
|
||
|
|
SetBalance(*big.Int)
|
||
|
|
SetNonce(uint64)
|
||
|
|
Balance() *big.Int
|
||
|
|
Address() common.Address
|
||
|
|
ReturnGas(*big.Int)
|
||
|
|
SetCode(common.Hash, []byte)
|
||
|
|
ForEachStorage(cb func(key, value common.Hash) bool)
|
||
|
|
Value() *big.Int
|
||
|
|
}
|
||
|
|
|
||
|
|
// CallContext provides a basic interface for the EVM calling conventions. The EVM Environment
|
||
|
|
// depends on this context being implemented for doing subcalls and initialising new EVM contracts.
|
||
|
|
type CallContext interface {
|
||
|
|
// Call another contract
|
||
|
|
Call(env *Environment, me ContractRef, addr common.Address, data []byte, gas, value *big.Int) ([]byte, error)
|
||
|
|
// Take another's contract code and execute within our own context
|
||
|
|
CallCode(env *Environment, me ContractRef, addr common.Address, data []byte, gas, value *big.Int) ([]byte, error)
|
||
|
|
// Same as CallCode except sender and value is propagated from parent to child scope
|
||
|
|
DelegateCall(env *Environment, me ContractRef, addr common.Address, data []byte, gas *big.Int) ([]byte, error)
|
||
|
|
// Create a new contract
|
||
|
|
Create(env *Environment, me ContractRef, data []byte, gas, value *big.Int) ([]byte, common.Address, error)
|
||
|
|
}
|