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/*
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.
Foobar 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 Foobar. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file AddressState.h
* @author Gav Wood <i@gavwood.com>
* @date 2014
*/
#pragma once
#include "Common.h"
#include "RLP.h"
namespace eth
{
enum class AddressType
{
Dead,
Normal,
Contract
};
class AddressState
{
public:
AddressState(): m_type(AddressType::Dead), m_balance(0), m_nonce(0) {}
AddressState(u256 _balance, u256 _nonce): m_type(AddressType::Normal), m_balance(_balance), m_nonce(_nonce) {}
AddressState(u256 _balance, u256 _nonce, h256 _contractRoot): m_type(AddressType::Contract), m_balance(_balance), m_nonce(_nonce), m_contractRoot(_contractRoot) {}
void incNonce() { m_nonce++; }
void addBalance(bigint _i) { m_balance = (u256)((bigint)m_balance + _i); }
void kill() { m_type = AddressType::Dead; m_memory.clear(); m_contractRoot = h256(); m_balance = 0; m_nonce = 0; }
AddressType type() const { return m_type; }
u256& balance() { return m_balance; }
u256 const& balance() const { return m_balance; }
u256& nonce() { return m_nonce; }
u256 const& nonce() const { return m_nonce; }
bool haveMemory() const { return m_memory.empty() && m_contractRoot != h256(); } // TODO: best to switch to m_haveMemory flag rather than try to infer.
h256 oldRoot() const { assert(!haveMemory()); return m_contractRoot; }
std::map<u256, u256>& takeMemory() { assert(m_type == AddressType::Contract && haveMemory()); m_contractRoot = h256(); return m_memory; }
std::map<u256, u256> const& memory() const { assert(m_type == AddressType::Contract && haveMemory()); return m_memory; }
private:
AddressType m_type;
u256 m_balance;
u256 m_nonce;
h256 m_contractRoot;
// TODO: change to unordered_map.
std::map<u256, u256> m_memory;
};
}