core/ difference with XFA (for information only).

core/include/fpdfapi/fpdf_serial.h

 // Copyright 2014 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_INCLUDE_FPDFAPI_FPDF_SERIAL_H_
 #define CORE_INCLUDE_FPDFAPI_FPDF_SERIAL_H_
 
 #include "fpdf_page.h"
 #include "fpdf_pageobj.h"
 
 class CPDF_ObjectStream;
 class CPDF_XRefStream;
 CFX_ByteTextBuf& operator<<(CFX_ByteTextBuf& buf, const CPDF_Object* pObj);
+#ifdef PDF_ENABLE_XFA
+class CPDF_ObjArchiveSaver : public CFX_ArchiveSaver {
+ public:
+  friend CPDF_ObjArchiveSaver& operator<<(CPDF_ObjArchiveSaver& ar,
+                                          const CPDF_Object* pObj);
+
+ protected:
+  CFX_MapPtrToPtr m_ObjectMap;
+};
+class CPDF_ObjArchiveLoader : public CFX_ArchiveLoader {
+ public:
+  CPDF_ObjArchiveLoader(const uint8_t* pData, FX_DWORD dwSize)
+      : CFX_ArchiveLoader(pData, dwSize), m_IndirectObjects(NULL) {}
+
+  friend CPDF_ObjArchiveLoader& operator>>(CPDF_ObjArchiveLoader& ar,
+                                           CPDF_Object*& pObj);
+
+ protected:
+  CPDF_IndirectObjects m_IndirectObjects;
+};
+class CPDF_PageArchiveSaver : public CPDF_ObjArchiveSaver {
+ public:
+  CPDF_PageArchiveSaver(CPDF_PageObjects* pPageObjs);
+
+  friend CPDF_PageArchiveSaver& operator<<(CPDF_PageArchiveSaver& ar,
+                                           CPDF_PageObject* pObj);
+
+  friend CPDF_PageArchiveSaver& operator<<(CPDF_PageArchiveSaver& ar,
+                                           CPDF_ClipPath clip_path);
+
+  friend CPDF_PageArchiveSaver& operator<<(CPDF_PageArchiveSaver& ar,
+                                           CPDF_GraphState graph_state);
+
+  friend CPDF_PageArchiveSaver& operator<<(CPDF_PageArchiveSaver& ar,
+                                           CPDF_TextState text_state);
+
+  friend CPDF_PageArchiveSaver& operator<<(CPDF_PageArchiveSaver& ar,
+                                           CPDF_ColorState color_state);
+
+  friend CPDF_PageArchiveSaver& operator<<(CPDF_PageArchiveSaver& ar,
+                                           CPDF_GeneralState general_state);
+
+ protected:
+  CPDF_ClipPath m_LastClipPath;
+
+  CPDF_GraphState m_LastGraphState;
+
+  CPDF_ColorState m_LastColorState;
+
+  CPDF_TextState m_LastTextState;
+
+  CPDF_GeneralState m_LastGeneralState;
+};
+class CPDF_PageArchiveLoader : public CPDF_ObjArchiveLoader {
+ public:
+  CPDF_PageArchiveLoader(CPDF_PageObjects* pPageObjs,
+                         const uint8_t* pData,
+                         FX_DWORD dwSize);
+
+  friend CPDF_PageArchiveLoader& operator>>(CPDF_PageArchiveLoader& ar,
+                                            CPDF_PageObject*& pObj);
+
+  friend CPDF_PageArchiveLoader& operator>>(CPDF_PageArchiveLoader& ar,
+                                            CPDF_ClipPath& clip_path);
+
+  friend CPDF_PageArchiveLoader& operator>>(CPDF_PageArchiveLoader& ar,
+                                            CPDF_GraphState& graph_state);
+
+  friend CPDF_PageArchiveLoader& operator>>(CPDF_PageArchiveLoader& ar,
+                                            CPDF_TextState& text_state);
+
+  friend CPDF_PageArchiveLoader& operator>>(CPDF_PageArchiveLoader& ar,
+                                            CPDF_ColorState& color_state);
+
+  friend CPDF_PageArchiveLoader& operator>>(CPDF_PageArchiveLoader& ar,
+                                            CPDF_GeneralState& general_state);
+
+ protected:
+  void PostProcColor(CPDF_Color& color);
+
+  CPDF_Object* AddResource(CPDF_Object* pSrcObj, const FX_CHAR* type);
+
+  CPDF_ClipPath m_LastClipPath;
+
+  CPDF_GraphState m_LastGraphState;
+
+  CPDF_ColorState m_LastColorState;
+
+  CPDF_TextState m_LastTextState;
+
+  CPDF_GeneralState m_LastGeneralState;
+
+  CFX_MapPtrToPtr m_ObjectMap;
+};
+#endif
 #define FPDFCREATE_INCREMENTAL 1
 #define FPDFCREATE_NO_ORIGINAL 2
 #define FPDFCREATE_PROGRESSIVE 4
 #define FPDFCREATE_OBJECTSTREAM 8
 
 class CPDF_Creator {
  public:
   CPDF_Creator(CPDF_Document* pDoc);
   ~CPDF_Creator();
 
@@ skipping 72 matching lines @@
   CFX_DWordArray m_NewObjNumArray;
 
   CPDF_Array* m_pIDArray;
 
   int32_t m_FileVersion;
   friend class CPDF_ObjectStream;
   friend class CPDF_XRefStream;
 };
 
 #endif  // CORE_INCLUDE_FPDFAPI_FPDF_SERIAL_H_