PdfReference.h

// SPDX-FileCopyrightText: 2006 Dominik Seichter <domseichter@web.de>
// SPDX-FileCopyrightText: 2020 Francesco Pretto <ceztko@gmail.com>
// SPDX-License-Identifier: LGPL-2.0-or-later OR MPL-2.0
 
#ifndef PDF_REFERENCE_H
#define PDF_REFERENCE_H
 
#include "PdfBaseDataTypes.h"
 
namespace PoDoFo {
 
class OutputStream;
 
class PODOFO_API PdfReference final : private PdfDataMember, public PdfDataProvider<PdfReference>
{
public:
    PdfReference();
 
    PdfReference(const uint32_t objectNo, const uint16_t generationNo);
 
    PdfReference(const PdfReference& rhs) = default;
 
    PdfReference& operator=(const PdfReference& rhs) = default;
 
    void Write(OutputStream& stream, PdfWriteFlags flags, const PdfStatefulEncrypt* encrypt, charbuff& buffer) const;
 
    bool operator==(const PdfReference& rhs) const;
 
    bool operator!=(const PdfReference& rhs) const;
 
    bool operator<(const PdfReference& rhs) const;
 
    bool IsIndirect() const;
 
public:
    inline void SetObjectNumber(uint32_t o) { m_ObjectNo = o; }
 
    inline uint32_t ObjectNumber() const { return m_ObjectNo; }
 
    inline void SetGenerationNumber(const uint16_t g) { m_GenerationNo = g; }
 
    inline uint16_t GenerationNumber() const { return m_GenerationNo; }
 
private:
    uint16_t m_GenerationNo;
    uint32_t m_ObjectNo;
};
 
};
 
namespace std
{
    template<>
    struct hash<PoDoFo::PdfReference>
    {
        std::size_t operator()(const PoDoFo::PdfReference& ref) const noexcept
        {
            return ref.ObjectNumber() ^ (ref.GenerationNumber() << 16);
        }
    };
}
 
#endif // PDF_REFERENCE_H