TransactionReceipt.cpp

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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.

    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/>.
*/
#include "TransactionReceipt.h"
#include <libethcore/Exceptions.h>

#include <boost/variant/get.hpp>

using namespace std;
using namespace dev;
using namespace dev::eth;

TransactionReceipt::TransactionReceipt(bytesConstRef _rlp)
{
    RLP r(_rlp);
    if (!r.isList() || r.itemCount() != 4)
        BOOST_THROW_EXCEPTION(InvalidTransactionReceiptFormat());

    if (!r[0].isData())
        BOOST_THROW_EXCEPTION(InvalidTransactionReceiptFormat());

    if (r[0].size() == 32)
        m_statusCodeOrStateRoot = (h256)r[0];
    else if (r[0].isInt())
        m_statusCodeOrStateRoot = (uint8_t)r[0];
    else
        BOOST_THROW_EXCEPTION(InvalidTransactionReceiptFormat());

    m_gasUsed = (u256)r[1];
    m_bloom = (LogBloom)r[2];
    for (auto const& i : r[3])
        m_log.emplace_back(i);

}

TransactionReceipt::TransactionReceipt(h256 const& _root, u256 const& _gasUsed, LogEntries const& _log):
    m_statusCodeOrStateRoot(_root),
    m_gasUsed(_gasUsed),
    m_bloom(eth::bloom(_log)),
    m_log(_log)
{}

TransactionReceipt::TransactionReceipt(uint8_t _status, u256 const& _gasUsed, LogEntries const& _log):
    m_statusCodeOrStateRoot(_status),
    m_gasUsed(_gasUsed),
    m_bloom(eth::bloom(_log)),
    m_log(_log)
{}

void TransactionReceipt::streamRLP(RLPStream& _s) const
{
    _s.appendList(4);
    if (hasStatusCode())
        _s << statusCode();
    else
        _s << stateRoot();
    _s << m_gasUsed << m_bloom;
    _s.appendList(m_log.size());
    for (LogEntry const& l: m_log)
        l.streamRLP(_s);
}

bool TransactionReceipt::hasStatusCode() const
{
    return m_statusCodeOrStateRoot.which() == 0;
}

uint8_t TransactionReceipt::statusCode() const
{
    if (hasStatusCode())
        return boost::get<uint8_t>(m_statusCodeOrStateRoot);
    else
        BOOST_THROW_EXCEPTION(TransactionReceiptVersionError());
}

h256 const& TransactionReceipt::stateRoot() const
{
    if (hasStatusCode())
        BOOST_THROW_EXCEPTION(TransactionReceiptVersionError());
    else
        return boost::get<h256>(m_statusCodeOrStateRoot);
}

std::ostream& dev::eth::operator<<(std::ostream& _out, TransactionReceipt const& _r)
{
    if (_r.hasStatusCode())
        _out << "Status: " << _r.statusCode() << std::endl;
    else
        _out << "Root: " << _r.stateRoot() << std::endl;
    _out << "Gas used: " << _r.cumulativeGasUsed() << std::endl;
    _out << "Logs: " << _r.log().size() << " entries:" << std::endl;
    for (LogEntry const& i: _r.log())
    {
        _out << "Address " << i.address << ". Topics:" << std::endl;
        for (auto const& j: i.topics)
            _out << "  " << j << std::endl;
        _out << "  Data: " << toHex(i.data) << std::endl;
    }
    _out << "Bloom: " << _r.bloom() << std::endl;
    return _out;
}