github.com/n1ghtfa1l/go-vnt@v0.6.4-alpha.6/core/vm/interface/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 inter 18 19 import ( 20 "math/big" 21 22 "github.com/vntchain/go-vnt/common" 23 "github.com/vntchain/go-vnt/core/types" 24 ) 25 26 // StateDB is an VM database for full state querying. 27 type StateDB interface { 28 CreateAccount(common.Address) 29 30 SubBalance(common.Address, *big.Int) 31 AddBalance(common.Address, *big.Int) 32 GetBalance(common.Address) *big.Int 33 34 GetNonce(common.Address) uint64 35 SetNonce(common.Address, uint64) 36 37 GetCodeHash(common.Address) common.Hash 38 GetCode(common.Address) []byte 39 SetCode(common.Address, []byte) 40 GetCodeSize(common.Address) int 41 42 AddRefund(uint64) 43 GetRefund() uint64 44 45 GetState(common.Address, common.Hash) common.Hash 46 SetState(common.Address, common.Hash, common.Hash) 47 48 Suicide(common.Address) bool 49 HasSuicided(common.Address) bool 50 51 // Exist reports whether the given account exists in state. 52 // Notably this should also return true for suicided accounts. 53 Exist(common.Address) bool 54 // Empty returns whether the given account is empty. Empty 55 // is defined according to EIP161 (balance = nonce = code = 0). 56 Empty(common.Address) bool 57 58 RevertToSnapshot(int) 59 Snapshot() int 60 61 AddLog(*types.Log) 62 AddPreimage(common.Hash, []byte) 63 64 ForEachStorage(common.Address, func(common.Hash, common.Hash) bool) 65 } 66 67 type Contract interface { 68 AsDelegate() Contract 69 Caller() common.Address 70 UseGas(gas uint64) (ok bool) 71 Address() common.Address 72 Value() *big.Int 73 SetCode(hash common.Hash, code []byte) 74 SetCallCode(addr *common.Address, hash common.Hash, code []byte) 75 } 76 77 type ChainContext interface { 78 GetStateDb() StateDB 79 GetOrigin() common.Address 80 GetTime() *big.Int 81 GetBlockNum() *big.Int 82 }