Make CPDF_Dictionary use unique pointers.

core/fpdfapi/parser/cpdf_syntax_parser.cpp

 // 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
 
 #include "core/fpdfapi/parser/cpdf_syntax_parser.h"
 
 #include <vector>
 
@@ skipping 440 matching lines @@
 
       if (key == "/Contents")
         dwSignValuePos = m_Pos;
 
       std::unique_ptr<CPDF_Object> pObj =
           GetObject(pObjList, objnum, gennum, true);
       if (!pObj)
         continue;
 
       CFX_ByteString keyNoSlash(key.raw_str() + 1, key.GetLength() - 1);
-      pDict->SetFor(keyNoSlash, pObj.release());
+      pDict->SetFor(keyNoSlash, std::move(pObj));
     }
 
     // Only when this is a signature dictionary and has contents, we reset the
     // contents to the un-decrypted form.
     if (pDict->IsSignatureDict() && dwSignValuePos) {
       CFX_AutoRestorer<FX_FILESIZE> save_pos(&m_Pos);
       m_Pos = dwSignValuePos;
-      pDict->SetFor("Contents",
-                    GetObject(pObjList, objnum, gennum, false).release());
+      pDict->SetFor("Contents", GetObject(pObjList, objnum, gennum, false));
     }
 
     FX_FILESIZE SavedPos = m_Pos;
     CFX_ByteString nextword = GetNextWord(nullptr);
     if (nextword != "stream") {
       m_Pos = SavedPos;
       return std::move(pDict);
     }
     return ReadStream(pDict.release(), objnum, gennum);
   }
@@ skipping 88 matching lines @@
       if (!obj) {
         uint8_t ch;
         while (GetNextChar(ch) && ch != 0x0A && ch != 0x0D) {
           continue;
         }
         return nullptr;
       }
 
       if (key.GetLength() > 1) {
         pDict->SetFor(CFX_ByteString(key.c_str() + 1, key.GetLength() - 1),
-                      obj.release());
+                      std::move(obj));
       }
     }
 
     FX_FILESIZE SavedPos = m_Pos;
     CFX_ByteString nextword = GetNextWord(nullptr);
     if (nextword != "stream") {
       m_Pos = SavedPos;
       return std::move(pDict);
     }
 
@@ skipping 125 matching lines @@
         numMarkers = ReadEOLMarkers(streamStartPos + endStreamOffset - 1);
         if (numMarkers == 1) {
           len -= 1;
         }
       }
 
       if (len < 0) {
         delete pDict;
         return nullptr;
       }
-      pDict->SetIntegerFor("Length", len);
+      pDict->SetNewFor<CPDF_Number>("Length", static_cast<int>(len));
     }
     m_Pos = streamStartPos;
   }
 
   if (len < 0) {
     delete pDict;
     return nullptr;
   }
 
   uint8_t* pData = nullptr;
@@ skipping 175 matching lines @@
     if (limit && m_Pos == limit)
       return -1;
   }
   return -1;
 }
 
 void CPDF_SyntaxParser::SetEncrypt(
     std::unique_ptr<CPDF_CryptoHandler> pCryptoHandler) {
   m_pCryptoHandler = std::move(pCryptoHandler);
 }