github.com/yinchengtsinghua/golang-Eos-dpos-Ethereum@v0.0.0-20190121132951-92cc4225ed8e/core/vm/noop.go (about)

     1  
     2  //此源码被清华学神尹成大魔王专业翻译分析并修改
     3  //尹成QQ77025077
     4  //尹成微信18510341407
     5  //尹成所在QQ群721929980
     6  //尹成邮箱 yinc13@mails.tsinghua.edu.cn
     7  //尹成毕业于清华大学,微软区块链领域全球最有价值专家
     8  //https://mvp.microsoft.com/zh-cn/PublicProfile/4033620
     9  //版权所有2016 Go Ethereum作者
    10  //此文件是Go以太坊库的一部分。
    11  //
    12  //Go-Ethereum库是免费软件：您可以重新分发它和/或修改
    13  //根据GNU发布的较低通用公共许可证的条款
    14  //自由软件基金会，或者许可证的第3版，或者
    15  //（由您选择）任何更高版本。
    16  //
    17  //Go以太坊图书馆的发行目的是希望它会有用，
    18  //但没有任何保证；甚至没有
    19  //适销性或特定用途的适用性。见
    20  //GNU较低的通用公共许可证，了解更多详细信息。
    21  //
    22  //你应该收到一份GNU较低级别的公共许可证副本
    23  //以及Go以太坊图书馆。如果没有，请参见<http://www.gnu.org/licenses/>。
    24  
    25  package vm
    26  
    27  import (
    28  	"math/big"
    29  
    30  	"github.com/ethereum/go-ethereum/common"
    31  	"github.com/ethereum/go-ethereum/core/types"
    32  )
    33  
    34  func NoopCanTransfer(db StateDB, from common.Address, balance *big.Int) bool {
    35  	return true
    36  }
    37  func NoopTransfer(db StateDB, from, to common.Address, amount *big.Int) {}
    38  
    39  type NoopEVMCallContext struct{}
    40  
    41  func (NoopEVMCallContext) Call(caller ContractRef, addr common.Address, data []byte, gas, value *big.Int) ([]byte, error) {
    42  	return nil, nil
    43  }
    44  func (NoopEVMCallContext) CallCode(caller ContractRef, addr common.Address, data []byte, gas, value *big.Int) ([]byte, error) {
    45  	return nil, nil
    46  }
    47  func (NoopEVMCallContext) Create(caller ContractRef, data []byte, gas, value *big.Int) ([]byte, common.Address, error) {
    48  	return nil, common.Address{}, nil
    49  }
    50  func (NoopEVMCallContext) DelegateCall(me ContractRef, addr common.Address, data []byte, gas *big.Int) ([]byte, error) {
    51  	return nil, nil
    52  }
    53  
    54  type NoopStateDB struct{}
    55  
    56  func (NoopStateDB) CreateAccount(common.Address)                                       {}
    57  func (NoopStateDB) SubBalance(common.Address, *big.Int)                                {}
    58  func (NoopStateDB) AddBalance(common.Address, *big.Int)                                {}
    59  func (NoopStateDB) GetBalance(common.Address) *big.Int                                 { return nil }
    60  func (NoopStateDB) GetNonce(common.Address) uint64                                     { return 0 }
    61  func (NoopStateDB) SetNonce(common.Address, uint64)                                    {}
    62  func (NoopStateDB) GetCodeHash(common.Address) common.Hash                             { return common.Hash{} }
    63  func (NoopStateDB) GetCode(common.Address) []byte                                      { return nil }
    64  func (NoopStateDB) SetCode(common.Address, []byte)                                     {}
    65  func (NoopStateDB) GetCodeSize(common.Address) int                                     { return 0 }
    66  func (NoopStateDB) AddRefund(uint64)                                                   {}
    67  func (NoopStateDB) GetRefund() uint64                                                  { return 0 }
    68  func (NoopStateDB) GetState(common.Address, common.Hash) common.Hash                   { return common.Hash{} }
    69  func (NoopStateDB) SetState(common.Address, common.Hash, common.Hash)                  {}
    70  func (NoopStateDB) Suicide(common.Address) bool                                        { return false }
    71  func (NoopStateDB) HasSuicided(common.Address) bool                                    { return false }
    72  func (NoopStateDB) Exist(common.Address) bool                                          { return false }
    73  func (NoopStateDB) Empty(common.Address) bool                                          { return false }
    74  func (NoopStateDB) RevertToSnapshot(int)                                               {}
    75  func (NoopStateDB) Snapshot() int                                                      { return 0 }
    76  func (NoopStateDB) AddLog(*types.Log)                                                  {}
    77  func (NoopStateDB) AddPreimage(common.Hash, []byte)                                    {}
    78  func (NoopStateDB) ForEachStorage(common.Address, func(common.Hash, common.Hash) bool) {}