| // Copyright 2016 PDFium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com |
| |
| #ifndef CORE_FPDFAPI_PARSER_CPDF_REFERENCE_H_ |
| #define CORE_FPDFAPI_PARSER_CPDF_REFERENCE_H_ |
| |
| #include <memory> |
| #include <set> |
| |
| #include "core/fpdfapi/parser/cpdf_object.h" |
| #include "core/fxcrt/retain_ptr.h" |
| #include "core/fxcrt/unowned_ptr.h" |
| |
| class CPDF_IndirectObjectHolder; |
| |
| class CPDF_Reference final : public CPDF_Object { |
| public: |
| CONSTRUCT_VIA_MAKE_RETAIN; |
| |
| // CPDF_Object: |
| Type GetType() const override; |
| RetainPtr<CPDF_Object> Clone() const override; |
| CPDF_Object* GetDirect() override; |
| const CPDF_Object* GetDirect() const override; |
| ByteString GetString() const override; |
| float GetNumber() const override; |
| int GetInteger() const override; |
| CPDF_Dictionary* GetDict() override; |
| const CPDF_Dictionary* GetDict() const override; |
| bool IsReference() const override; |
| CPDF_Reference* AsReference() override; |
| const CPDF_Reference* AsReference() const override; |
| bool WriteTo(IFX_ArchiveStream* archive, |
| const CPDF_Encryptor* encryptor) const override; |
| RetainPtr<CPDF_Object> MakeReference( |
| CPDF_IndirectObjectHolder* holder) const override; |
| |
| CPDF_IndirectObjectHolder* GetObjList() const { return m_pObjList.Get(); } |
| uint32_t GetRefObjNum() const { return m_RefObjNum; } |
| void SetRef(CPDF_IndirectObjectHolder* pDoc, uint32_t objnum); |
| |
| private: |
| CPDF_Reference(CPDF_IndirectObjectHolder* pDoc, uint32_t objnum); |
| ~CPDF_Reference() override; |
| |
| RetainPtr<CPDF_Object> CloneNonCyclic( |
| bool bDirect, |
| std::set<const CPDF_Object*>* pVisited) const override; |
| CPDF_Object* SafeGetDirect(); |
| const CPDF_Object* SafeGetDirect() const; |
| |
| UnownedPtr<CPDF_IndirectObjectHolder> m_pObjList; |
| uint32_t m_RefObjNum; |
| }; |
| |
| inline CPDF_Reference* ToReference(CPDF_Object* obj) { |
| return obj ? obj->AsReference() : nullptr; |
| } |
| |
| inline const CPDF_Reference* ToReference(const CPDF_Object* obj) { |
| return obj ? obj->AsReference() : nullptr; |
| } |
| |
| #endif // CORE_FPDFAPI_PARSER_CPDF_REFERENCE_H_ |