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TomZ
d459e3663a
Notice I removed the code that handles with Message and with the uint256 class. They are not needed here.
119 lines
3.2 KiB
C++
119 lines
3.2 KiB
C++
/*
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* This file is part of the bitcoin-classic project
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* Copyright (C) 2016 Tom Zander <tomz@freedommail.ch>
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*
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* This program 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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*
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* This program 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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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef MESSAGEPARSER_H
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#define MESSAGEPARSER_H
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#include "ConstBuffer.h"
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#include <vector>
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#include <string>
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#include <cstdint>
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#include <boost/variant.hpp>
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#include <boost/utility/string_ref.hpp>
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class Message;
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namespace Streaming {
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enum ParsedType {
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FoundTag,
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EndOfDocument,
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Error
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};
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typedef boost::variant<int32_t, bool, uint64_t, std::string, std::vector<char>, double> variant;
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class MessageParser
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{
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public:
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MessageParser(const ConstBuffer &buffer);
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MessageParser(const char *buffer, int length);
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ParsedType next();
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uint32_t peekNext(bool *success = 0) const;
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uint32_t tag() const;
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variant data();
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inline bool isInt() const {
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return m_valueState == ValueParsed && m_value.which() == 0;
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}
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inline bool isLong() const {
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return m_valueState == ValueParsed && (m_value.which() == 2 || m_value.which() == 0);
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}
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inline bool isString() const {
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return m_valueState == LazyString || m_value.which() == 3;
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}
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inline bool isBool() const {
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return m_valueState == ValueParsed && m_value.which() == 1;
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}
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inline bool isByteArray() const {
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return m_valueState == LazyByteArray || m_value.which() == 4;
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}
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inline bool isDouble() const {
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return m_valueState == ValueParsed && m_value.which() == 5;
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}
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int32_t intData() const;
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uint64_t longData() const;
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double doubleData() const;
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std::string stringData();
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boost::string_ref rstringData() const;
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bool boolData() const;
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std::vector<char> bytesData() const;
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/// Backwards compatible unsigned char vector.
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std::vector<unsigned char> unsignedBytesData() const;
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/// Return the amount of bytes a bytesData() would return
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int bytesDataLength() const;
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/// return the amount of bytes consumed up-including the latest parsed tag.
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inline int consumed() const {
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return m_position;
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}
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/// consume a number of bytes without parsing.
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void consume(int bytes);
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static int32_t read32int(const char *buffer);
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static int16_t read16int(const char *buffer);
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private:
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const char *m_privData;
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int m_length;
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int m_position;
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bool m_validTagFound;
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variant m_value;
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uint32_t m_tag;
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enum LazyState {
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ValueParsed,
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LazyByteArray,
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LazyString
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};
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LazyState m_valueState;
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int m_dataStart;
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int m_dataLength;
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ConstBuffer m_constBuffer; // we just have this here to make sure its refcounted
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};
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}
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#endif
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