Use std::map in CPDF_IndirectObjects

core/src/fpdfapi/fpdf_parser/fpdf_parser_parser.cpp

 // Copyright 2014 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
 
 #include "core/include/fpdfapi/fpdf_parser.h"
 
 #include <algorithm>
 #include <memory>
@@ skipping 1181 matching lines @@
   FX_FILESIZE size = ((FX_FILESIZE*)pResult)[1] - pos;
   FX_FILESIZE SavedPos = m_Syntax.SavePos();
   m_Syntax.RestorePos(pos);
   const char kFormStream[] = "/Form\0stream";
   const CFX_ByteStringC kFormStreamStr(kFormStream, sizeof(kFormStream) - 1);
   bForm = m_Syntax.SearchMultiWord(kFormStreamStr, TRUE, size) == 0;
   m_Syntax.RestorePos(SavedPos);
   return TRUE;
 }
 
-CPDF_Object* CPDF_Parser::ParseIndirectObject(CPDF_IndirectObjects* pObjList,
-                                              FX_DWORD objnum,
-                                              PARSE_CONTEXT* pContext) {
+CPDF_Object* CPDF_Parser::ParseIndirectObject(
+    CPDF_IndirectObjectHolder* pObjList,
+    FX_DWORD objnum,
+    PARSE_CONTEXT* pContext) {
   if (!IsValidObjectNumber(objnum))
     return nullptr;
 
   // Prevent circular parsing the same object.
   if (pdfium::ContainsKey(m_ParsingObjNums, objnum))
     return nullptr;
   ScopedSetInsertion<FX_DWORD> local_insert(&m_ParsingObjNums, objnum);
 
   if (m_V5Type[objnum] == 1 || m_V5Type[objnum] == 255) {
     FX_FILESIZE pos = m_ObjectInfo[objnum].pos;
@@ skipping 175 matching lines @@
     }
     nextoff = m_Syntax.SavePos();
   }
   size = (FX_DWORD)(nextoff - pos);
   pBuffer = FX_Alloc(uint8_t, size);
   m_Syntax.RestorePos(pos);
   m_Syntax.ReadBlock(pBuffer, size);
   m_Syntax.RestorePos(SavedPos);
 }
 
-CPDF_Object* CPDF_Parser::ParseIndirectObjectAt(CPDF_IndirectObjects* pObjList,
-                                                FX_FILESIZE pos,
-                                                FX_DWORD objnum,
-                                                PARSE_CONTEXT* pContext) {
+CPDF_Object* CPDF_Parser::ParseIndirectObjectAt(
+    CPDF_IndirectObjectHolder* pObjList,
+    FX_FILESIZE pos,
+    FX_DWORD objnum,
+    PARSE_CONTEXT* pContext) {
   FX_FILESIZE SavedPos = m_Syntax.SavePos();
   m_Syntax.RestorePos(pos);
   bool bIsNumber;
   CFX_ByteString word = m_Syntax.GetNextWord(&bIsNumber);
   if (!bIsNumber) {
     m_Syntax.RestorePos(SavedPos);
     return NULL;
   }
   FX_FILESIZE objOffset = m_Syntax.SavePos();
   objOffset -= word.GetLength();
@@ skipping 21 matching lines @@
   }
   m_Syntax.RestorePos(SavedPos);
   if (pObj) {
     if (!objnum)
       pObj->m_ObjNum = parser_objnum;
     pObj->m_GenNum = parser_gennum;
   }
   return pObj;
 }
 CPDF_Object* CPDF_Parser::ParseIndirectObjectAtByStrict(
-    CPDF_IndirectObjects* pObjList,
+    CPDF_IndirectObjectHolder* pObjList,
     FX_FILESIZE pos,
     FX_DWORD objnum,
     PARSE_CONTEXT* pContext,
     FX_FILESIZE* pResultPos) {
   FX_FILESIZE SavedPos = m_Syntax.SavePos();
   m_Syntax.RestorePos(pos);
   bool bIsNumber;
   CFX_ByteString word = m_Syntax.GetNextWord(&bIsNumber);
   if (!bIsNumber) {
     m_Syntax.RestorePos(SavedPos);
@@ skipping 578 matching lines @@
 
 CFX_ByteString CPDF_SyntaxParser::GetNextWord(bool* bIsNumber) {
   GetNextWordInternal(bIsNumber);
   return CFX_ByteString((const FX_CHAR*)m_WordBuffer, m_WordSize);
 }
 
 CFX_ByteString CPDF_SyntaxParser::GetKeyword() {
   return GetNextWord(nullptr);
 }
 
-CPDF_Object* CPDF_SyntaxParser::GetObject(CPDF_IndirectObjects* pObjList,
+CPDF_Object* CPDF_SyntaxParser::GetObject(CPDF_IndirectObjectHolder* pObjList,
                                           FX_DWORD objnum,
                                           FX_DWORD gennum,
                                           PARSE_CONTEXT* pContext,
                                           FX_BOOL bDecrypt) {
   CFX_AutoRestorer<int> restorer(&s_CurrentRecursionDepth);
   if (++s_CurrentRecursionDepth > kParserMaxRecursionDepth) {
     return NULL;
   }
   FX_FILESIZE SavedPos = m_Pos;
   FX_BOOL bTypeOnly = pContext && (pContext->m_Flags & PDFPARSE_TYPEONLY);
@@ skipping 134 matching lines @@
     m_Pos = SavedPos;
     return nullptr;
   }
   if (bTypeOnly)
     return (CPDF_Object*)PDFOBJ_INVALID;
 
   return nullptr;
 }
 
 CPDF_Object* CPDF_SyntaxParser::GetObjectByStrict(
-    CPDF_IndirectObjects* pObjList,
+    CPDF_IndirectObjectHolder* pObjList,
     FX_DWORD objnum,
     FX_DWORD gennum,
     PARSE_CONTEXT* pContext) {
   CFX_AutoRestorer<int> restorer(&s_CurrentRecursionDepth);
   if (++s_CurrentRecursionDepth > kParserMaxRecursionDepth) {
     return NULL;
   }
   FX_FILESIZE SavedPos = m_Pos;
   FX_BOOL bTypeOnly = pContext && (pContext->m_Flags & PDFPARSE_TYPEONLY);
   bool bIsNumber;
@@ skipping 543 matching lines @@
   FX_BOOL CheckTrailerAppend(IFX_DownloadHints* pHints);
   FX_BOOL CheckPageStatus(IFX_DownloadHints* pHints);
   FX_BOOL CheckAllCrossRefStream(IFX_DownloadHints* pHints);
 
   int32_t CheckCrossRefStream(IFX_DownloadHints* pHints,
                               FX_FILESIZE& xref_offset);
   FX_BOOL IsLinearizedFile(uint8_t* pData, FX_DWORD dwLen);
   void SetStartOffset(FX_FILESIZE dwOffset);
   FX_BOOL GetNextToken(CFX_ByteString& token);
   FX_BOOL GetNextChar(uint8_t& ch);
-  CPDF_Object* ParseIndirectObjectAt(FX_FILESIZE pos,
-                                     FX_DWORD objnum,
-                                     CPDF_IndirectObjects* pObjList = NULL);
+  CPDF_Object* ParseIndirectObjectAt(
+      FX_FILESIZE pos,
+      FX_DWORD objnum,
+      CPDF_IndirectObjectHolder* pObjList = NULL);
   CPDF_Object* GetObject(FX_DWORD objnum,
                          IFX_DownloadHints* pHints,
                          FX_BOOL* pExistInFile);
   FX_BOOL GetPageKids(CPDF_Parser* pParser, CPDF_Object* pPages);
   FX_BOOL PreparePageItem();
   FX_BOOL LoadPages(IFX_DownloadHints* pHints);
   FX_BOOL LoadAllXref(IFX_DownloadHints* pHints);
   FX_BOOL LoadAllFile(IFX_DownloadHints* pHints);
   int32_t CheckLinearizedData(IFX_DownloadHints* pHints);
   FX_BOOL CheckPageAnnots(int iPage, IFX_DownloadHints* pHints);
@@ skipping 849 matching lines @@
   CPDF_Stream* pStream = ToStream(pHintStream.get());
   if (pStream && pHintTables->LoadHintStream(pStream))
     m_pHintTables = std::move(pHintTables);
 
   m_docStatus = PDF_DATAAVAIL_DONE;
   return TRUE;
 }
 CPDF_Object* CPDF_DataAvail::ParseIndirectObjectAt(
     FX_FILESIZE pos,
     FX_DWORD objnum,
-    CPDF_IndirectObjects* pObjList) {
+    CPDF_IndirectObjectHolder* pObjList) {
   FX_FILESIZE SavedPos = m_syntaxParser.SavePos();
   m_syntaxParser.RestorePos(pos);
   bool bIsNumber;
   CFX_ByteString word = m_syntaxParser.GetNextWord(&bIsNumber);
   if (!bIsNumber)
     return nullptr;
 
   FX_DWORD parser_objnum = FXSYS_atoi(word);
   if (objnum && parser_objnum != objnum)
     return nullptr;
@@ skipping 1335 matching lines @@
   if (!m_pLinearizedDict)
     return -1;
   CPDF_Array* pRange = m_pLinearizedDict->GetArray("H");
   if (!pRange)
     return -1;
   CPDF_Object* pStreamLen = pRange->GetElementValue(1);
   if (!pStreamLen)
     return -1;
   return pStreamLen->GetInteger();
 }