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.
 
 
 
 
 

82 lines
1.9 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 LogFilter.cpp
* @author Gav Wood <i@gavwood.com>
* @date 2014
*/
#include "LogFilter.h"
#include <libdevcrypto/SHA3.h>
#include "State.h"
using namespace std;
using namespace dev;
using namespace dev::eth;
void LogFilter::streamRLP(RLPStream& _s) const
{
_s.appendList(6) << m_addresses << m_topics << m_earliest << m_latest << m_max << m_skip;
}
h256 LogFilter::sha3() const
{
RLPStream s;
streamRLP(s);
return dev::sha3(s.out());
}
bool LogFilter::matches(LogBloom _bloom) const
{
if (m_addresses.size())
{
for (auto i: m_addresses)
if (_bloom.containsBloom<3>(dev::sha3(i)))
goto OK1;
return false;
}
OK1:
if (m_topics.size())
{
for (auto i: m_topics)
if (_bloom.containsBloom<3>(dev::sha3(i)))
goto OK2;
return false;
}
OK2:
return true;
}
bool LogFilter::matches(State const& _s, unsigned _i) const
{
return matches(_s.receipt(_i)).size() > 0;
}
LogEntries LogFilter::matches(TransactionReceipt const& _m) const
{
LogEntries ret;
if (matches(_m.bloom()))
for (LogEntry const& e: _m.log())
{
if (!m_addresses.empty() && !m_addresses.count(e.address))
continue;
for (auto const& t: m_topics)
if (!std::count(e.topics.begin(), e.topics.end(), t))
continue;
ret.push_back(e);
}
return ret;
}