Split fpdf_parser_objects.cpp into per-class .cpp/.h files.

core/include/fpdfapi/cpdf_indirect_object_holder.h

+// 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_INCLUDE_FPDFAPI_CPDF_INDIRECT_OBJECT_HOLDER_H_
+#define CORE_INCLUDE_FPDFAPI_CPDF_INDIRECT_OBJECT_HOLDER_H_
+
+#include <map>
+
+#include "core/include/fxcrt/fx_system.h"
+
+class CPDF_Object;
+class CPDF_Parser;
+
+class CPDF_IndirectObjectHolder {
+ public:
+  using iterator = std::map<FX_DWORD, CPDF_Object*>::iterator;
+  using const_iterator = std::map<FX_DWORD, CPDF_Object*>::const_iterator;
+
+  explicit CPDF_IndirectObjectHolder(CPDF_Parser* pParser);
+  ~CPDF_IndirectObjectHolder();
+
+  CPDF_Object* GetIndirectObject(FX_DWORD objnum);
+  FX_DWORD AddIndirectObject(CPDF_Object* pObj);
+  void ReleaseIndirectObject(FX_DWORD objnum);
+
+  // Takes ownership of |pObj|.
+  FX_BOOL InsertIndirectObject(FX_DWORD objnum, CPDF_Object* pObj);
+
+  FX_DWORD GetLastObjNum() const { return m_LastObjNum; }
+  iterator begin() { return m_IndirectObjs.begin(); }
+  const_iterator begin() const { return m_IndirectObjs.begin(); }
+  iterator end() { return m_IndirectObjs.end(); }
+  const_iterator end() const { return m_IndirectObjs.end(); }
+
+ protected:
+  CPDF_Parser* m_pParser;
+  FX_DWORD m_LastObjNum;
+  std::map<FX_DWORD, CPDF_Object*> m_IndirectObjs;
+};
+
+#endif  // CORE_INCLUDE_FPDFAPI_CPDF_INDIRECT_OBJECT_HOLDER_H_