Use unique_ptr for CXFA_XMLParser.

xfa/fde/xml/fde_xml_imp.h

 // 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
 
 #ifndef XFA_FDE_XML_FDE_XML_IMP_H_
 #define XFA_FDE_XML_FDE_XML_IMP_H_
 
+#include <memory>
+
 #include "core/fxcrt/fx_system.h"
 #include "xfa/fde/xml/fde_xml.h"
 #include "xfa/fgas/crt/fgas_memory.h"
 #include "xfa/fgas/crt/fgas_stream.h"
 #include "xfa/fgas/crt/fgas_utils.h"
 
 class CFDE_BlockBuffer;
 class CFDE_XMLInstruction;
 class CFDE_XMLElement;
 class CFDE_XMLText;
 class CFDE_XMLDoc;
 class CFDE_XMLDOMParser;
-class CFDE_XMLParser;
 class CFDE_XMLSyntaxParser;
+class IFDE_XMLParser;
 
 class CFDE_XMLNode : public CFX_Target {
  public:
   enum NodeItem {
     Root = 0,
     Parent,
     FirstSibling,
     PriorSibling,
     NextSibling,
     LastSibling,
@@ skipping 152 matching lines @@
   void SetCharData(const CFX_WideString& wsCData) { m_wsCharData = wsCData; }
 
   CFX_WideString m_wsCharData;
 };
 
 class CFDE_XMLDoc : public CFX_Target {
  public:
   CFDE_XMLDoc();
   ~CFDE_XMLDoc() override;
 
-  bool LoadXML(CFDE_XMLParser* pXMLParser);
+  bool LoadXML(std::unique_ptr<IFDE_XMLParser> pXMLParser);
   int32_t DoLoad(IFX_Pause* pPause = nullptr);
   void CloseXML();
   CFDE_XMLNode* GetRoot() const { return m_pRoot; }
   void SaveXML(CFX_RetainPtr<IFGAS_Stream>& pXMLStream, bool bSaveBOM = true);
   void SaveXMLNode(const CFX_RetainPtr<IFGAS_Stream>& pXMLStream,
                    CFDE_XMLNode* pNode);
 
  protected:
   void Reset(bool bInitRoot);
   void ReleaseParser();
 
   CFX_RetainPtr<IFGAS_Stream> m_pStream;
   int32_t m_iStatus;
   CFDE_XMLNode* m_pRoot;
   CFDE_XMLSyntaxParser* m_pSyntaxParser;
-  CFDE_XMLParser* m_pXMLParser;
+  std::unique_ptr<IFDE_XMLParser> m_pXMLParser;
 };
 
-class CFDE_XMLParser {
+class IFDE_XMLParser {
  public:
-  virtual ~CFDE_XMLParser() {}
-
-  virtual void Release() = 0;
+  virtual ~IFDE_XMLParser() {}
   virtual int32_t DoParser(IFX_Pause* pPause) = 0;
 };
 
 class CFDE_BlockBuffer : public CFX_Target {
  public:
   explicit CFDE_BlockBuffer(int32_t iAllocStep = 1024 * 1024);
   ~CFDE_BlockBuffer() override;
 
   bool InitBuffer(int32_t iBufferSize = 1024 * 1024);
   bool IsInitialized() { return m_iBufferSize / m_iAllocStep >= 1; }
@@ skipping 113 matching lines @@
   int32_t m_iTextDataLength;
   FDE_XmlSyntaxResult m_syntaxParserResult;
   FDE_XmlSyntaxState m_syntaxParserState;
   FX_WCHAR m_wQuotationMark;
   int32_t m_iEntityStart;
   CFX_StackTemplate<uint32_t> m_SkipStack;
   FX_WCHAR m_SkipChar;
 };
 
 #endif  // XFA_FDE_XML_FDE_XML_IMP_H_