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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_FPDF_PARSER_INCLUDE_CPDF_REFERENCE_H_
#define CORE_FPDFAPI_FPDF_PARSER_INCLUDE_CPDF_REFERENCE_H_
#include "core/fpdfapi/fpdf_parser/include/cpdf_object.h"
class CPDF_IndirectObjectHolder;
class CPDF_Reference : public CPDF_Object {
public:
CPDF_Reference(CPDF_IndirectObjectHolder* pDoc, int objnum);
// CPDF_Object.
Type GetType() const override;
CPDF_Object* Clone(FX_BOOL bDirect = FALSE) const override;
CPDF_Object* GetDirect() const override;
CFX_ByteString GetString() const override;
CFX_ByteStringC GetConstString() const override;
FX_FLOAT GetNumber() const override;
int GetInteger() const override;
CPDF_Dictionary* GetDict() const override;
// TODO(weili): check whether GetUnicodeText() and GetArray() are needed.
bool IsReference() const override;
CPDF_Reference* AsReference() override;
const CPDF_Reference* AsReference() const override;
CPDF_IndirectObjectHolder* GetObjList() const { return m_pObjList; }
FX_DWORD GetRefObjNum() const { return m_RefObjNum; }
void SetRef(CPDF_IndirectObjectHolder* pDoc, FX_DWORD objnum);
protected:
~CPDF_Reference() override;
CPDF_Object* SafeGetDirect() const {
CPDF_Object* obj = GetDirect();
if (!obj || obj->IsReference())
return nullptr;
return obj;
}
CPDF_IndirectObjectHolder* m_pObjList;
FX_DWORD m_RefObjNum;
};
#endif // CORE_FPDFAPI_FPDF_PARSER_INCLUDE_CPDF_REFERENCE_H_
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