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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/fpdfapi/parser/cpdf_object.h"
      8 
      9 #include <algorithm>
     10 
     11 #include "core/fpdfapi/parser/cpdf_array.h"
     12 #include "core/fpdfapi/parser/cpdf_dictionary.h"
     13 #include "core/fpdfapi/parser/cpdf_indirect_object_holder.h"
     14 #include "core/fpdfapi/parser/cpdf_parser.h"
     15 #include "core/fpdfapi/parser/fpdf_parser_decode.h"
     16 #include "core/fxcrt/fx_string.h"
     17 #include "third_party/base/stl_util.h"
     18 
     19 CPDF_Object::~CPDF_Object() {}
     20 
     21 CPDF_Object* CPDF_Object::GetDirect() const {
     22   return const_cast<CPDF_Object*>(this);
     23 }
     24 
     25 std::unique_ptr<CPDF_Object> CPDF_Object::CloneObjectNonCyclic(
     26     bool bDirect) const {
     27   std::set<const CPDF_Object*> visited_objs;
     28   return CloneNonCyclic(bDirect, &visited_objs);
     29 }
     30 
     31 std::unique_ptr<CPDF_Object> CPDF_Object::CloneDirectObject() const {
     32   return CloneObjectNonCyclic(true);
     33 }
     34 
     35 std::unique_ptr<CPDF_Object> CPDF_Object::CloneNonCyclic(
     36     bool bDirect,
     37     std::set<const CPDF_Object*>* pVisited) const {
     38   return Clone();
     39 }
     40 
     41 CFX_ByteString CPDF_Object::GetString() const {
     42   return CFX_ByteString();
     43 }
     44 
     45 CFX_WideString CPDF_Object::GetUnicodeText() const {
     46   return CFX_WideString();
     47 }
     48 
     49 FX_FLOAT CPDF_Object::GetNumber() const {
     50   return 0;
     51 }
     52 
     53 int CPDF_Object::GetInteger() const {
     54   return 0;
     55 }
     56 
     57 CPDF_Dictionary* CPDF_Object::GetDict() const {
     58   return nullptr;
     59 }
     60 
     61 void CPDF_Object::SetString(const CFX_ByteString& str) {
     62   ASSERT(false);
     63 }
     64 
     65 bool CPDF_Object::IsArray() const {
     66   return false;
     67 }
     68 
     69 bool CPDF_Object::IsBoolean() const {
     70   return false;
     71 }
     72 
     73 bool CPDF_Object::IsDictionary() const {
     74   return false;
     75 }
     76 
     77 bool CPDF_Object::IsName() const {
     78   return false;
     79 }
     80 
     81 bool CPDF_Object::IsNumber() const {
     82   return false;
     83 }
     84 
     85 bool CPDF_Object::IsReference() const {
     86   return false;
     87 }
     88 
     89 bool CPDF_Object::IsStream() const {
     90   return false;
     91 }
     92 
     93 bool CPDF_Object::IsString() const {
     94   return false;
     95 }
     96 
     97 CPDF_Array* CPDF_Object::AsArray() {
     98   return nullptr;
     99 }
    100 
    101 const CPDF_Array* CPDF_Object::AsArray() const {
    102   return nullptr;
    103 }
    104 
    105 CPDF_Boolean* CPDF_Object::AsBoolean() {
    106   return nullptr;
    107 }
    108 
    109 const CPDF_Boolean* CPDF_Object::AsBoolean() const {
    110   return nullptr;
    111 }
    112 
    113 CPDF_Dictionary* CPDF_Object::AsDictionary() {
    114   return nullptr;
    115 }
    116 
    117 const CPDF_Dictionary* CPDF_Object::AsDictionary() const {
    118   return nullptr;
    119 }
    120 
    121 CPDF_Name* CPDF_Object::AsName() {
    122   return nullptr;
    123 }
    124 
    125 const CPDF_Name* CPDF_Object::AsName() const {
    126   return nullptr;
    127 }
    128 
    129 CPDF_Number* CPDF_Object::AsNumber() {
    130   return nullptr;
    131 }
    132 
    133 const CPDF_Number* CPDF_Object::AsNumber() const {
    134   return nullptr;
    135 }
    136 
    137 CPDF_Reference* CPDF_Object::AsReference() {
    138   return nullptr;
    139 }
    140 
    141 const CPDF_Reference* CPDF_Object::AsReference() const {
    142   return nullptr;
    143 }
    144 
    145 CPDF_Stream* CPDF_Object::AsStream() {
    146   return nullptr;
    147 }
    148 
    149 const CPDF_Stream* CPDF_Object::AsStream() const {
    150   return nullptr;
    151 }
    152 
    153 CPDF_String* CPDF_Object::AsString() {
    154   return nullptr;
    155 }
    156 
    157 const CPDF_String* CPDF_Object::AsString() const {
    158   return nullptr;
    159 }
    160