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88 lines
2.5 KiB
88 lines
2.5 KiB
/*
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This file is part of cpp-ethereum.
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cpp-ethereum is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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cpp-ethereum is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
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*/
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/** @file LogFilter.h
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* @author Gav Wood <i@gavwood.com>
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* @date 2014
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*/
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#pragma once
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#include <libdevcore/Common.h>
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#include <libdevcore/RLP.h>
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#include <libethcore/Common.h>
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#include "TransactionReceipt.h"
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namespace dev
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{
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namespace eth
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{
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class LogFilter;
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}
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namespace eth
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{
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/// Simple stream output for the StateDiff.
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std::ostream& operator<<(std::ostream& _out, dev::eth::LogFilter const& _s);
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class State;
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class Block;
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class LogFilter
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{
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public:
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LogFilter(h256 _earliest = EarliestBlockHash, h256 _latest = PendingBlockHash): m_earliest(_earliest), m_latest(_latest) {}
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void streamRLP(RLPStream& _s) const;
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h256 sha3() const;
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/// hash of earliest block which should be filtered
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h256 earliest() const { return m_earliest; }
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/// hash of latest block which should be filtered
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h256 latest() const { return m_latest; }
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/// Range filter is a filter which doesn't care about addresses or topics
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/// Matches are all entries from earliest to latest
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/// @returns true if addresses and topics are unspecified
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bool isRangeFilter() const;
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/// @returns bloom possibilities for all addresses and topics
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std::vector<LogBloom> bloomPossibilities() const;
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bool matches(LogBloom _bloom) const;
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bool matches(Block const& _b, unsigned _i) const;
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LogEntries matches(TransactionReceipt const& _r) const;
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LogFilter address(Address _a) { m_addresses.insert(_a); return *this; }
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LogFilter topic(unsigned _index, h256 const& _t) { if (_index < 4) m_topics[_index].insert(_t); return *this; }
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LogFilter withEarliest(h256 _e) { m_earliest = _e; return *this; }
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LogFilter withLatest(h256 _e) { m_latest = _e; return *this; }
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friend std::ostream& dev::eth::operator<<(std::ostream& _out, dev::eth::LogFilter const& _s);
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private:
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AddressHash m_addresses;
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std::array<h256Hash, 4> m_topics;
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h256 m_earliest = EarliestBlockHash;
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h256 m_latest = PendingBlockHash;
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};
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}
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}
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