You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
85 lines
3.0 KiB
85 lines
3.0 KiB
/*
|
|
This file is part of cpp-ethereum.
|
|
|
|
cpp-ethereum is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation, either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
cpp-ethereum 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 General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
/** @file AccountDiff.h
|
|
* @author Gav Wood <i@gavwood.com>
|
|
* @date 2014
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <libdevcore/Common.h>
|
|
#include <libdevcore/Diff.h>
|
|
#include <libethcore/Common.h>
|
|
|
|
namespace dev
|
|
{
|
|
namespace eth
|
|
{
|
|
|
|
/// Type of change that an account can have from state to state.
|
|
enum class AccountChange
|
|
{
|
|
None, ///< Nothing changed at all.
|
|
Creation, ///< Account came into existance.
|
|
Deletion, ///< Account was deleted.
|
|
Intrinsic, ///< Account was already in existance and some internal aspect of the account altered such as balance, nonce or storage.
|
|
CodeStorage, ///< Account was already in existance and the code of the account changed.
|
|
All ///< Account was already in existance and all aspects of the account changed.
|
|
};
|
|
|
|
/// @returns a three-character code that expresses the type of change.
|
|
char const* lead(AccountChange _c);
|
|
|
|
/**
|
|
* @brief Stores the difference between two accounts (typically the same account at two times).
|
|
*
|
|
* In order to determine what about an account has altered, this struct can be used to specify
|
|
* alterations. Use changed() and changeType() to determine what, if anything, is different.
|
|
*
|
|
* Five members are accessible: to determine the nature of the changes.
|
|
*/
|
|
struct AccountDiff
|
|
{
|
|
/// @returns true if the account has changed at all.
|
|
inline bool changed() const { return storage.size() || code || nonce || balance || exist; }
|
|
/// @returns a three-character code that expresses the change.
|
|
AccountChange changeType() const;
|
|
|
|
Diff<bool> exist; ///< The account's existance; was it created/deleted or not?
|
|
Diff<u256> balance; ///< The account's balance; did it alter?
|
|
Diff<u256> nonce; ///< The account's nonce; did it alter?
|
|
std::map<u256, Diff<u256>> storage; ///< The account's storage addresses; each has its own Diff.
|
|
Diff<bytes> code; ///< The account's code; in general this should only have changed if exist also changed.
|
|
};
|
|
|
|
/**
|
|
* @brief Stores the difference between two states; this is just their encumbent accounts.
|
|
*/
|
|
struct StateDiff
|
|
{
|
|
std::map<Address, AccountDiff> accounts; ///< The state's account changes; each has its own AccountDiff.
|
|
};
|
|
|
|
}
|
|
|
|
/// Simple stream output for the StateDiff.
|
|
std::ostream& operator<<(std::ostream& _out, dev::eth::StateDiff const& _s);
|
|
/// Simple stream output for the AccountDiff.
|
|
std::ostream& operator<<(std::ostream& _out, dev::eth::AccountDiff const& _s);
|
|
|
|
}
|
|
|
|
|