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.
112 lines
3.6 KiB
112 lines
3.6 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 ExtVMFace.h
|
|
* @author Gav Wood <i@gavwood.com>
|
|
* @date 2014
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <libdevcore/Common.h>
|
|
#include <libevmface/Instruction.h>
|
|
#include <libethcore/CommonEth.h>
|
|
#include <libethcore/BlockInfo.h>
|
|
|
|
namespace dev
|
|
{
|
|
namespace eth
|
|
{
|
|
|
|
struct Post
|
|
{
|
|
Address from;
|
|
Address to;
|
|
u256 value;
|
|
bytes data;
|
|
u256 gas;
|
|
};
|
|
|
|
using PostList = std::list<Post>;
|
|
|
|
using OnOpFunc = std::function<void(uint64_t /*steps*/, Instruction /*instr*/, bigint /*newMemSize*/, bigint /*gasCost*/, void/*VM*/*, void/*ExtVM*/ const*)>;
|
|
|
|
/**
|
|
* @brief A null implementation of the class for specifying VM externalities.
|
|
*/
|
|
class ExtVMFace
|
|
{
|
|
public:
|
|
/// Null constructor.
|
|
ExtVMFace() {}
|
|
|
|
/// Full constructor.
|
|
ExtVMFace(Address _myAddress, Address _caller, Address _origin, u256 _value, u256 _gasPrice, bytesConstRef _data, bytesConstRef _code, BlockInfo const& _previousBlock, BlockInfo const& _currentBlock);
|
|
|
|
/// Get the code at the given location in code ROM.
|
|
byte getCode(u256 _n) const { return _n < code.size() ? code[(unsigned)_n] : 0; }
|
|
|
|
/// Read storage location.
|
|
u256 store(u256) { return 0; }
|
|
|
|
/// Write a value in storage.
|
|
void setStore(u256, u256) {}
|
|
|
|
/// Read address's balance.
|
|
u256 balance(Address) { return 0; }
|
|
|
|
/// Read address's code.
|
|
bytes const& codeAt(Address) { return NullBytes; }
|
|
|
|
/// Subtract amount from account's balance.
|
|
void subBalance(u256) {}
|
|
|
|
/// Determine account's TX count.
|
|
u256 txCount(Address) { return 0; }
|
|
|
|
/// Suicide the associated contract and give proceeds to the given address.
|
|
void suicide(Address) { suicides.insert(myAddress); }
|
|
|
|
/// Create a new (contract) account.
|
|
h160 create(u256, u256*, bytesConstRef, bytesConstRef) { return h160(); }
|
|
|
|
/// Make a new message call.
|
|
bool call(Address, u256, bytesConstRef, u256*, bytesRef, OnOpFunc const&, Address, Address) { return false; }
|
|
|
|
/// Post a new message call.
|
|
void post(Address _to, u256 _value, bytesConstRef _data, u256 _gas) { posts.push_back(Post({myAddress, _to, _value, _data.toBytes(), _gas})); }
|
|
|
|
/// Revert any changes made (by any of the other calls).
|
|
void revert() {}
|
|
|
|
/// Execute any posts that may exist, including those that are incurred as a result of earlier posts.
|
|
void doPosts() {}
|
|
|
|
Address myAddress; ///< Address associated with executing code (a contract, or contract-to-be).
|
|
Address caller; ///< Address which sent the message (either equal to origin or a contract).
|
|
Address origin; ///< Original transactor.
|
|
u256 value; ///< Value (in Wei) that was passed to this address.
|
|
u256 gasPrice; ///< Price of gas (that we already paid).
|
|
bytesConstRef data; ///< Current input data.
|
|
bytesConstRef code; ///< Current code that is executing.
|
|
BlockInfo previousBlock; ///< The previous block's information.
|
|
BlockInfo currentBlock; ///< The current block's information.
|
|
std::set<Address> suicides; ///< Any accounts that have suicided.
|
|
std::list<Post> posts; ///< Any posts that have been made.
|
|
};
|
|
|
|
}
|
|
}
|
|
|