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| 1 // Copyright 2016 PDFium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com |
| 6 |
| 7 #include "core/include/fpdfapi/cpdf_reference.h" |
| 8 |
| 9 #include "core/include/fpdfapi/cpdf_indirect_object_holder.h" |
| 10 |
| 11 CPDF_Reference::CPDF_Reference(CPDF_IndirectObjectHolder* pDoc, int objnum) |
| 12 : m_pObjList(pDoc), m_RefObjNum(objnum) {} |
| 13 |
| 14 CPDF_Reference::~CPDF_Reference() {} |
| 15 |
| 16 CPDF_Object::Type CPDF_Reference::GetType() const { |
| 17 return REFERENCE; |
| 18 } |
| 19 |
| 20 CFX_ByteString CPDF_Reference::GetString() const { |
| 21 CPDF_Object* obj = SafeGetDirect(); |
| 22 return obj ? obj->GetString() : CFX_ByteString(); |
| 23 } |
| 24 |
| 25 CFX_ByteStringC CPDF_Reference::GetConstString() const { |
| 26 CPDF_Object* obj = SafeGetDirect(); |
| 27 return obj ? obj->GetConstString() : CFX_ByteStringC(); |
| 28 } |
| 29 |
| 30 FX_FLOAT CPDF_Reference::GetNumber() const { |
| 31 CPDF_Object* obj = SafeGetDirect(); |
| 32 return obj ? obj->GetNumber() : 0; |
| 33 } |
| 34 |
| 35 int CPDF_Reference::GetInteger() const { |
| 36 CPDF_Object* obj = SafeGetDirect(); |
| 37 return obj ? obj->GetInteger() : 0; |
| 38 } |
| 39 |
| 40 CPDF_Dictionary* CPDF_Reference::GetDict() const { |
| 41 CPDF_Object* obj = SafeGetDirect(); |
| 42 return obj ? obj->GetDict() : nullptr; |
| 43 } |
| 44 |
| 45 bool CPDF_Reference::IsReference() const { |
| 46 return true; |
| 47 } |
| 48 |
| 49 CPDF_Reference* CPDF_Reference::AsReference() { |
| 50 return this; |
| 51 } |
| 52 |
| 53 const CPDF_Reference* CPDF_Reference::AsReference() const { |
| 54 return this; |
| 55 } |
| 56 |
| 57 CPDF_Object* CPDF_Reference::Clone(FX_BOOL bDirect) const { |
| 58 if (bDirect) { |
| 59 auto* pDirect = GetDirect(); |
| 60 return pDirect ? pDirect->Clone(TRUE) : nullptr; |
| 61 } |
| 62 return new CPDF_Reference(m_pObjList, m_RefObjNum); |
| 63 } |
| 64 |
| 65 void CPDF_Reference::SetRef(CPDF_IndirectObjectHolder* pDoc, FX_DWORD objnum) { |
| 66 m_pObjList = pDoc; |
| 67 m_RefObjNum = objnum; |
| 68 } |
| 69 |
| 70 CPDF_Object* CPDF_Reference::GetDirect() const { |
| 71 return m_pObjList ? m_pObjList->GetIndirectObject(m_RefObjNum) : nullptr; |
| 72 } |
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