| // 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_FPDF_PARSER_CPDF_OBJECT_H_ |
| #define CORE_FPDFAPI_FPDF_PARSER_CPDF_OBJECT_H_ |
| |
| #include <memory> |
| #include <set> |
| |
| #include "core/fxcrt/fx_string.h" |
| #include "core/fxcrt/fx_system.h" |
| |
| class CPDF_Array; |
| class CPDF_Boolean; |
| class CPDF_Dictionary; |
| class CPDF_Name; |
| class CPDF_Null; |
| class CPDF_Number; |
| class CPDF_Reference; |
| class CPDF_Stream; |
| class CPDF_String; |
| |
| class CPDF_Object { |
| public: |
| static const uint32_t kInvalidObjNum = static_cast<uint32_t>(-1); |
| enum Type { |
| BOOLEAN = 1, |
| NUMBER, |
| STRING, |
| NAME, |
| ARRAY, |
| DICTIONARY, |
| STREAM, |
| NULLOBJ, |
| REFERENCE |
| }; |
| |
| virtual Type GetType() const = 0; |
| uint32_t GetObjNum() const { return m_ObjNum; } |
| uint32_t GetGenNum() const { return m_GenNum; } |
| |
| // Create a deep copy of the object. |
| virtual CPDF_Object* Clone() const = 0; |
| // Create a deep copy of the object except any reference object be |
| // copied to the object it points to directly. |
| virtual CPDF_Object* CloneDirectObject() const; |
| virtual CPDF_Object* GetDirect() const; |
| |
| void Release(); |
| |
| virtual CFX_ByteString GetString() const; |
| virtual CFX_WideString GetUnicodeText() const; |
| virtual FX_FLOAT GetNumber() const; |
| virtual int GetInteger() const; |
| virtual CPDF_Dictionary* GetDict() const; |
| |
| virtual void SetString(const CFX_ByteString& str); |
| |
| virtual bool IsArray() const; |
| virtual bool IsBoolean() const; |
| virtual bool IsDictionary() const; |
| virtual bool IsName() const; |
| virtual bool IsNumber() const; |
| virtual bool IsReference() const; |
| virtual bool IsStream() const; |
| virtual bool IsString() const; |
| |
| virtual CPDF_Array* AsArray(); |
| virtual const CPDF_Array* AsArray() const; |
| virtual CPDF_Boolean* AsBoolean(); |
| virtual const CPDF_Boolean* AsBoolean() const; |
| virtual CPDF_Dictionary* AsDictionary(); |
| virtual const CPDF_Dictionary* AsDictionary() const; |
| virtual CPDF_Name* AsName(); |
| virtual const CPDF_Name* AsName() const; |
| virtual CPDF_Number* AsNumber(); |
| virtual const CPDF_Number* AsNumber() const; |
| virtual CPDF_Reference* AsReference(); |
| virtual const CPDF_Reference* AsReference() const; |
| virtual CPDF_Stream* AsStream(); |
| virtual const CPDF_Stream* AsStream() const; |
| virtual CPDF_String* AsString(); |
| virtual const CPDF_String* AsString() const; |
| |
| protected: |
| friend class CPDF_Array; |
| friend class CPDF_Dictionary; |
| friend class CPDF_Document; |
| friend class CPDF_IndirectObjectHolder; |
| friend class CPDF_Parser; |
| friend class CPDF_Reference; |
| friend class CPDF_Stream; |
| friend struct std::default_delete<CPDF_Object>; |
| |
| CPDF_Object() : m_ObjNum(0), m_GenNum(0) {} |
| virtual ~CPDF_Object(); |
| |
| CPDF_Object* CloneObjectNonCyclic(bool bDirect) const; |
| |
| // Create a deep copy of the object with the option to either |
| // copy a reference object or directly copy the object it refers to |
| // when |bDirect| is true. |
| // Also check cyclic reference against |pVisited|, no copy if it is found. |
| // Complex objects should implement their own CloneNonCyclic() |
| // function to properly check for possible loop. |
| virtual CPDF_Object* CloneNonCyclic( |
| bool bDirect, |
| std::set<const CPDF_Object*>* pVisited) const; |
| |
| uint32_t m_ObjNum; |
| uint32_t m_GenNum; |
| |
| private: |
| CPDF_Object(const CPDF_Object& src) {} |
| }; |
| |
| inline CPDF_Boolean* ToBoolean(CPDF_Object* obj) { |
| return obj ? obj->AsBoolean() : nullptr; |
| } |
| |
| inline const CPDF_Boolean* ToBoolean(const CPDF_Object* obj) { |
| return obj ? obj->AsBoolean() : nullptr; |
| } |
| |
| inline CPDF_Number* ToNumber(CPDF_Object* obj) { |
| return obj ? obj->AsNumber() : nullptr; |
| } |
| |
| inline const CPDF_Number* ToNumber(const CPDF_Object* obj) { |
| return obj ? obj->AsNumber() : nullptr; |
| } |
| |
| inline CPDF_String* ToString(CPDF_Object* obj) { |
| return obj ? obj->AsString() : nullptr; |
| } |
| |
| inline const CPDF_String* ToString(const CPDF_Object* obj) { |
| return obj ? obj->AsString() : nullptr; |
| } |
| |
| inline CPDF_Name* ToName(CPDF_Object* obj) { |
| return obj ? obj->AsName() : nullptr; |
| } |
| |
| inline const CPDF_Name* ToName(const CPDF_Object* obj) { |
| return obj ? obj->AsName() : nullptr; |
| } |
| |
| inline CPDF_Array* ToArray(CPDF_Object* obj) { |
| return obj ? obj->AsArray() : nullptr; |
| } |
| |
| inline const CPDF_Array* ToArray(const CPDF_Object* obj) { |
| return obj ? obj->AsArray() : nullptr; |
| } |
| |
| inline CPDF_Dictionary* ToDictionary(CPDF_Object* obj) { |
| return obj ? obj->AsDictionary() : nullptr; |
| } |
| |
| inline const CPDF_Dictionary* ToDictionary(const CPDF_Object* obj) { |
| return obj ? obj->AsDictionary() : nullptr; |
| } |
| 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; |
| } |
| |
| inline CPDF_Stream* ToStream(CPDF_Object* obj) { |
| return obj ? obj->AsStream() : nullptr; |
| } |
| |
| inline const CPDF_Stream* ToStream(const CPDF_Object* obj) { |
| return obj ? obj->AsStream() : nullptr; |
| } |
| |
| #endif // CORE_FPDFAPI_FPDF_PARSER_CPDF_OBJECT_H_ |