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// 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_INDIRECT_OBJECT_HOLDER_H_
#define CORE_FPDFAPI_PARSER_CPDF_INDIRECT_OBJECT_HOLDER_H_
#include <map>
#include <memory>
#include "core/fxcrt/fx_system.h"
#include "third_party/base/ptr_util.h"
class CPDF_Object;
class CPDF_IndirectObjectHolder {
public:
using const_iterator =
std::map<uint32_t, std::unique_ptr<CPDF_Object>>::const_iterator;
CPDF_IndirectObjectHolder();
virtual ~CPDF_IndirectObjectHolder();
CPDF_Object* GetIndirectObject(uint32_t objnum) const;
CPDF_Object* GetOrParseIndirectObject(uint32_t objnum);
void DeleteIndirectObject(uint32_t objnum);
// Creates and adds a new object owned by the indirect object holder,
// and returns an unowned pointer to it.
template <typename T, typename... Args>
T* NewIndirect(Args... args) {
return static_cast<T*>(AddIndirectObject(pdfium::MakeUnique<T>(args...)));
}
// Takes ownership of |pObj|, returns unowned pointer to it.
CPDF_Object* AddIndirectObject(std::unique_ptr<CPDF_Object> pObj);
// Always takes ownership of |pObj|, return true if higher generation number.
bool ReplaceIndirectObjectIfHigherGeneration(
uint32_t objnum,
std::unique_ptr<CPDF_Object> pObj);
uint32_t GetLastObjNum() const { return m_LastObjNum; }
void SetLastObjNum(uint32_t objnum) { m_LastObjNum = objnum; }
const_iterator begin() const { return m_IndirectObjs.begin(); }
const_iterator end() const { return m_IndirectObjs.end(); }
protected:
virtual std::unique_ptr<CPDF_Object> ParseIndirectObject(uint32_t objnum);
private:
uint32_t m_LastObjNum;
std::map<uint32_t, std::unique_ptr<CPDF_Object>> m_IndirectObjs;
};
#endif // CORE_FPDFAPI_PARSER_CPDF_INDIRECT_OBJECT_HOLDER_H_
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