ParsingInfo.h

Go to the documentation of this file.

#ifndef ZSERIO_PARSING_INFO_INC_H
#define ZSERIO_PARSING_INFO_INC_H
 
#include <cstddef>
#include <limits>
 
#include "zserio/CppRuntimeException.h"
 
namespace zserio
{
 
class ParsingInfo
{
public:
    ParsingInfo() :
            m_bitPosition(INVALID_BIT_POSITION),
            m_bitSize(INVALID_BIT_SIZE)
    {}
 
    explicit ParsingInfo(size_t bitPosition) :
            m_bitPosition(bitPosition),
            m_bitSize(INVALID_BIT_SIZE)
    {}
 
    void initializeBitSize(size_t endBitPosition)
    {
        const size_t bitPosition = getBitPosition();
        if (endBitPosition < bitPosition)
        {
            throw CppRuntimeException("Invalid end bit position argument (")
                    << endBitPosition << " < " << bitPosition << ")!";
        }
 
        m_bitSize = endBitPosition - getBitPosition();
    }
 
    size_t getBitPosition() const
    {
        if (m_bitPosition == INVALID_BIT_POSITION)
        {
            throw CppRuntimeException("Invalid bit position, call the reader constructor first!");
        }
 
        return m_bitPosition;
    }
 
    size_t getBitSize() const
    {
        if (m_bitSize == INVALID_BIT_SIZE)
        {
            throw CppRuntimeException("Invalid bit size, call the reader constructor first!");
        }
 
        return m_bitSize;
    }
 
private:
    static constexpr size_t INVALID_BIT_POSITION = std::numeric_limits<size_t>::max();
    static constexpr size_t INVALID_BIT_SIZE = std::numeric_limits<size_t>::max();
 
    size_t m_bitPosition;
    size_t m_bitSize;
};
 
} // namespace zserio
 
#endif // ZSERIO_PARSING_INFO_INC_H