github.com/cheng762/platon-go@v1.8.17-0.20190529111256-7deff2d7be26/core/vm/interface.go (about)

     1  // Copyright 2016 The go-ethereum Authors
     2  // This file is part of the go-ethereum library.
     3  //
     4  // The go-ethereum library is free software: you can redistribute it and/or modify
     5  // it under the terms of the GNU Lesser General Public License as published by
     6  // the Free Software Foundation, either version 3 of the License, or
     7  // (at your option) any later version.
     8  //
     9  // The go-ethereum library is distributed in the hope that it will be useful,
    10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    12  // GNU Lesser General Public License for more details.
    13  //
    14  // You should have received a copy of the GNU Lesser General Public License
    15  // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
    16  
    17  package vm
    18  
    19  import (
    20  	"math/big"
    21  
    22  	"github.com/PlatONnetwork/PlatON-Go/common"
    23  	"github.com/PlatONnetwork/PlatON-Go/core/types"
    24  	"github.com/PlatONnetwork/PlatON-Go/core/ppos_storage"
    25  )
    26  
    27  // StateDB is an EVM database for full state querying.
    28  type StateDB interface {
    29  	CreateAccount(common.Address)
    30  
    31  	SubBalance(common.Address, *big.Int)
    32  	AddBalance(common.Address, *big.Int)
    33  	GetBalance(common.Address) *big.Int
    34  
    35  	GetNonce(common.Address) uint64
    36  	SetNonce(common.Address, uint64)
    37  
    38  	GetCodeHash(common.Address) common.Hash
    39  	GetCode(common.Address) []byte
    40  	SetCode(common.Address, []byte)
    41  	GetCodeSize(common.Address) int
    42  
    43  	// todo: new func for abi of contract.
    44  	GetAbiHash(common.Address) common.Hash
    45  	GetAbi(common.Address) []byte
    46  	SetAbi(common.Address, []byte)
    47  
    48  	AddRefund(uint64)
    49  	SubRefund(uint64)
    50  	GetRefund() uint64
    51  
    52  	// todo: hash -> bytes
    53  	GetCommittedState(common.Address, []byte) []byte
    54  	//GetState(common.Address, common.Hash) common.Hash
    55  	//SetState(common.Address, common.Hash, common.Hash)
    56  	GetState(common.Address, []byte) []byte
    57  	SetState(common.Address, []byte, []byte)
    58  
    59  
    60  	Suicide(common.Address) bool
    61  	HasSuicided(common.Address) bool
    62  
    63  	// Exist reports whether the given account exists in state.
    64  	// Notably this should also return true for suicided accounts.
    65  	Exist(common.Address) bool
    66  	// Empty returns whether the given account is empty. Empty
    67  	// is defined according to EIP161 (balance = nonce = code = 0).
    68  	Empty(common.Address) bool
    69  
    70  	RevertToSnapshot(int)
    71  	Snapshot() int
    72  
    73  	AddLog(*types.Log)
    74  	AddPreimage(common.Hash, []byte)
    75  
    76  	ForEachStorage(common.Address, func(common.Hash, common.Hash) bool)
    77  
    78  	//ppos add
    79  	TxHash() common.Hash
    80  	TxIdx() uint32
    81  	GetPPOSCache() *ppos_storage.Ppos_storage
    82  }
    83  
    84  // CallContext provides a basic interface for the EVM calling conventions. The EVM
    85  // depends on this context being implemented for doing subcalls and initialising new EVM contracts.
    86  type CallContext interface {
    87  	// Call another contract
    88  	Call(env *EVM, me ContractRef, addr common.Address, data []byte, gas, value *big.Int) ([]byte, error)
    89  	// Take another's contract code and execute within our own context
    90  	CallCode(env *EVM, me ContractRef, addr common.Address, data []byte, gas, value *big.Int) ([]byte, error)
    91  	// Same as CallCode except sender and value is propagated from parent to child scope
    92  	DelegateCall(env *EVM, me ContractRef, addr common.Address, data []byte, gas *big.Int) ([]byte, error)
    93  	// Create a new contract
    94  	Create(env *EVM, me ContractRef, data []byte, gas, value *big.Int) ([]byte, common.Address, error)
    95  }