Replace Release() { delete this; } in fde_xml_imp.h

Review-Url: https://codereview.chromium.org/1981003002

8 files changed, 52 insertions, 62 deletions

diff --git a/xfa/fxfa/app/xfa_ffdoc.cpp b/xfa/fxfa/app/xfa_ffdoc.cpp
index f33e4e0585..77c3b251a2 100644
--- a/xfa/fxfa/app/xfa_ffdoc.cpp
+++ b/xfa/fxfa/app/xfa_ffdoc.cpp
@@ -7,6 +7,7 @@
 #include "xfa/fxfa/include/xfa_ffdoc.h"
 
 #include <algorithm>
+#include <memory>
 
 #include "core/fpdfapi/fpdf_parser/include/cpdf_array.h"
 #include "core/fpdfapi/fpdf_parser/include/cpdf_document.h"
@@ -145,10 +146,11 @@ int32_t CXFA_FFDoc::DoLoad(IFX_Pause* pPause) {
     if (!OpenDoc(pPDFDocument)) {
       return XFA_PARSESTATUS_SyntaxErr;
     }
-    IXFA_Parser* pParser = IXFA_Parser::Create(m_pDocument, TRUE);
-    if (!pParser) {
+    std::unique_ptr<IXFA_Parser> pParser(
+        IXFA_Parser::Create(m_pDocument, TRUE));
+    if (!pParser)
       return XFA_PARSESTATUS_SyntaxErr;
-    }
+
     CXFA_Node* pRootNode = NULL;
     if (pParser->StartParse(m_pStream) == XFA_PARSESTATUS_Ready &&
         pParser->DoParse(NULL) == XFA_PARSESTATUS_Done) {
@@ -160,8 +162,6 @@ int32_t CXFA_FFDoc::DoLoad(IFX_Pause* pPause) {
     } else {
       iStatus = XFA_PARSESTATUS_StatusErr;
     }
-    pParser->Release();
-    pParser = NULL;
   }
   return iStatus;
 }
@@ -265,7 +265,7 @@ FX_BOOL CXFA_FFDoc::CloseDoc() {
   m_TypeToDocViewMap.clear();
 
   if (m_pDocument) {
-    m_pDocument->GetParser()->Release();
+    m_pDocument->DestroyParser();
     m_pDocument = nullptr;
   }
 
diff --git a/xfa/fxfa/parser/xfa_document.h b/xfa/fxfa/parser/xfa_document.h
index 16428ea781..8501e5fc60 100644
--- a/xfa/fxfa/parser/xfa_document.h
+++ b/xfa/fxfa/parser/xfa_document.h
@@ -67,6 +67,7 @@ class CXFA_Document {
   ~CXFA_Document();
   CXFA_Node* GetRoot() const { return m_pRootNode; }
   CXFA_DocumentParser* GetParser() const { return m_pParser; }
+  void DestroyParser();
   CXFA_FFNotify* GetNotify() const;
   void SetRoot(CXFA_Node* pNewRoot);
   CXFA_Object* GetXFAObject(const CFX_WideStringC& wsNodeName);
diff --git a/xfa/fxfa/parser/xfa_document_imp.cpp b/xfa/fxfa/parser/xfa_document_imp.cpp
index 0421683e07..3f1737a7f8 100644
--- a/xfa/fxfa/parser/xfa_document_imp.cpp
+++ b/xfa/fxfa/parser/xfa_document_imp.cpp
@@ -77,6 +77,12 @@ void CXFA_Document::SetRoot(CXFA_Node* pNewRoot) {
   m_pRootNode = pNewRoot;
   RemovePurgeNode(pNewRoot);
 }
+
+void CXFA_Document::DestroyParser() {
+  delete m_pParser;
+  m_pParser = nullptr;
+}
+
 CXFA_FFNotify* CXFA_Document::GetNotify() const {
   return m_pParser->GetNotify();
 }
diff --git a/xfa/fxfa/parser/xfa_document_serialize.cpp b/xfa/fxfa/parser/xfa_document_serialize.cpp
index ef85d0e266..2e300505b3 100644
--- a/xfa/fxfa/parser/xfa_document_serialize.cpp
+++ b/xfa/fxfa/parser/xfa_document_serialize.cpp
@@ -6,6 +6,8 @@
 
 #include "xfa/fxfa/parser/xfa_document_serialize.h"
 
+#include <memory>
+
 #include "xfa/fde/xml/fde_xml_imp.h"
 #include "xfa/fgas/crt/fgas_codepage.h"
 #include "xfa/fxfa/fm2js/xfa_fm2jsapi.h"
@@ -22,31 +24,26 @@ CXFA_DataImporter::CXFA_DataImporter(CXFA_Document* pDocument)
     : m_pDocument(pDocument) {
   ASSERT(m_pDocument);
 }
+
 FX_BOOL CXFA_DataImporter::ImportData(IFX_FileRead* pDataDocument) {
-  IXFA_Parser* pDataDocumentParser = IXFA_Parser::Create(m_pDocument);
-  if (!pDataDocumentParser) {
-    return FALSE;
-  }
+  std::unique_ptr<IXFA_Parser> pDataDocumentParser(
+      IXFA_Parser::Create(m_pDocument));
   if (pDataDocumentParser->StartParse(pDataDocument, XFA_XDPPACKET_Datasets) !=
       XFA_PARSESTATUS_Ready) {
-    pDataDocumentParser->Release();
     return FALSE;
   }
-  if (pDataDocumentParser->DoParse(NULL) < XFA_PARSESTATUS_Done) {
-    pDataDocumentParser->Release();
+  if (pDataDocumentParser->DoParse(nullptr) < XFA_PARSESTATUS_Done)
     return FALSE;
-  }
+
   CXFA_Node* pImportDataRoot = pDataDocumentParser->GetRootNode();
-  if (!pImportDataRoot) {
-    pDataDocumentParser->Release();
+  if (!pImportDataRoot)
     return FALSE;
-  }
+
   CXFA_Node* pDataModel =
       ToNode(m_pDocument->GetXFAObject(XFA_HASHCODE_Datasets));
-  if (!pDataModel) {
-    pDataDocumentParser->Release();
+  if (!pDataModel)
     return FALSE;
-  }
+
   CXFA_Node* pDataNode = ToNode(m_pDocument->GetXFAObject(XFA_HASHCODE_Data));
   if (pDataNode) {
     pDataModel->RemoveChild(pDataNode);
@@ -66,9 +63,9 @@ FX_BOOL CXFA_DataImporter::ImportData(IFX_FileRead* pDataDocument) {
     pDataModel->InsertChild(pImportDataRoot);
   }
   m_pDocument->DoDataRemerge(FALSE);
-  pDataDocumentParser->Release();
   return TRUE;
 }
+
 CFX_WideString XFA_ExportEncodeAttribute(const CFX_WideString& str) {
   CFX_WideTextBuf textBuf;
   int32_t iLen = str.GetLength();
diff --git a/xfa/fxfa/parser/xfa_object_imp.cpp b/xfa/fxfa/parser/xfa_object_imp.cpp
index 0fbde1f160..f9887825f5 100644
--- a/xfa/fxfa/parser/xfa_object_imp.cpp
+++ b/xfa/fxfa/parser/xfa_object_imp.cpp
@@ -120,10 +120,10 @@ CXFA_Node::~CXFA_Node() {
     delete pNode;
     pNode = pNext;
   }
-  if (m_pXMLNode && HasFlag(XFA_NODEFLAG_OwnXMLNode)) {
-    m_pXMLNode->Release();
-  }
+  if (m_pXMLNode && HasFlag(XFA_NODEFLAG_OwnXMLNode))
+    delete m_pXMLNode;
 }
+
 CXFA_Node* CXFA_Node::Clone(FX_BOOL bRecursive) {
   CXFA_Document* pFactory = m_pDocument->GetParser()->GetFactory();
   CXFA_Node* pClone = pFactory->CreateNode(m_ePacket, m_eNodeClass);
@@ -962,17 +962,12 @@ void CXFA_Node::Script_NodeClass_LoadXML(CFXJSE_Arguments* pArguments) {
   if (iLength >= 3) {
     bOverwrite = pArguments->GetInt32(2) == 0 ? FALSE : TRUE;
   }
-  IXFA_Parser* pParser = IXFA_Parser::Create(m_pDocument);
-  if (!pParser) {
-    return;
-  }
+  std::unique_ptr<IXFA_Parser> pParser(IXFA_Parser::Create(m_pDocument));
   CFDE_XMLNode* pXMLNode = NULL;
   int32_t iParserStatus = pParser->ParseXMLData(wsExpression, pXMLNode, NULL);
-  if (iParserStatus != XFA_PARSESTATUS_Done || !pXMLNode) {
-    pParser->Release();
-    pParser = NULL;
+  if (iParserStatus != XFA_PARSESTATUS_Done || !pXMLNode)
     return;
-  }
+
   if (bIgnoreRoot &&
       (pXMLNode->GetType() != FDE_XMLNODE_Element ||
        XFA_RecognizeRichText(static_cast<CFDE_XMLElement*>(pXMLNode)))) {
@@ -1059,14 +1054,11 @@ void CXFA_Node::Script_NodeClass_LoadXML(CFXJSE_Arguments* pArguments) {
     }
     pFakeRoot->SetFlag(XFA_NODEFLAG_HasRemoved, false);
   } else {
-    if (pFakeXMLRoot) {
-      pFakeXMLRoot->Release();
-      pFakeXMLRoot = NULL;
-    }
+    delete pFakeXMLRoot;
+    pFakeXMLRoot = nullptr;
   }
-  pParser->Release();
-  pParser = NULL;
 }
+
 void CXFA_Node::Script_NodeClass_SaveFilteredXML(CFXJSE_Arguments* pArguments) {
 }
 
diff --git a/xfa/fxfa/parser/xfa_parser.h b/xfa/fxfa/parser/xfa_parser.h
index 5ccc1af199..656653698e 100644
--- a/xfa/fxfa/parser/xfa_parser.h
+++ b/xfa/fxfa/parser/xfa_parser.h
@@ -16,7 +16,7 @@ class IXFA_Parser {
   static IXFA_Parser* Create(CXFA_Document* pFactory,
                              FX_BOOL bDocumentParser = FALSE);
   virtual ~IXFA_Parser() {}
-  virtual void Release() = 0;
+
   virtual int32_t StartParse(IFX_FileRead* pStream,
                              XFA_XDPPACKET ePacketID = XFA_XDPPACKET_XDP) = 0;
   virtual int32_t DoParse(IFX_Pause* pPause = NULL) = 0;
diff --git a/xfa/fxfa/parser/xfa_parser_imp.cpp b/xfa/fxfa/parser/xfa_parser_imp.cpp
index 01ea1d6fae..bb4ba864d5 100644
--- a/xfa/fxfa/parser/xfa_parser_imp.cpp
+++ b/xfa/fxfa/parser/xfa_parser_imp.cpp
@@ -680,10 +680,9 @@ CXFA_Node* CXFA_SimpleParser::ParseAsXDPPacket_Data(
     CXFA_Node* pNode =
         m_pFactory->CreateNode(XFA_XDPPACKET_Datasets, XFA_ELEMENT_DataGroup);
     if (!pNode) {
-      if (pDataXMLNode != pXMLDocumentNode) {
-        pDataXMLNode->Release();
-      }
-      return NULL;
+      if (pDataXMLNode != pXMLDocumentNode)
+        delete pDataXMLNode;
+      return nullptr;
     }
     CFX_WideString wsLocalName;
     static_cast<CFDE_XMLElement*>(pDataXMLNode)->GetLocalTagName(wsLocalName);
@@ -1335,13 +1334,11 @@ void CXFA_SimpleParser::ParseInstruction(CXFA_Node* pXFANode,
   }
 }
 void CXFA_SimpleParser::CloseParser() {
-  if (m_pXMLDoc) {
-    m_pXMLDoc->Release();
-    m_pXMLDoc = NULL;
-  }
+  delete m_pXMLDoc;
+  m_pXMLDoc = nullptr;
   if (m_pStream) {
     m_pStream->Release();
-    m_pStream = NULL;
+    m_pStream = nullptr;
   }
 }
 
@@ -1410,17 +1407,16 @@ CXFA_XMLParser::CXFA_XMLParser(CFDE_XMLNode* pRoot, IFX_Stream* pStream)
       m_syntaxParserResult(FDE_XmlSyntaxResult::None) {
   ASSERT(m_pParent && m_pStream);
   m_NodeStack.Push(m_pParent);
-  m_pParser = new CFDE_XMLSyntaxParser;
+  m_pParser.reset(new CFDE_XMLSyntaxParser);
   m_pParser->Init(m_pStream, 32 * 1024, 1024 * 1024);
 }
+
 CXFA_XMLParser::~CXFA_XMLParser() {
-  if (m_pParser) {
-    m_pParser->Release();
-  }
   m_NodeStack.RemoveAll();
   m_ws1.clear();
   m_ws2.clear();
 }
+
 int32_t CXFA_XMLParser::DoParser(IFX_Pause* pPause) {
   if (m_syntaxParserResult == FDE_XmlSyntaxResult::Error)
     return -1;
diff --git a/xfa/fxfa/parser/xfa_parser_imp.h b/xfa/fxfa/parser/xfa_parser_imp.h
index 2485ddfcd2..eb98966398 100644
--- a/xfa/fxfa/parser/xfa_parser_imp.h
+++ b/xfa/fxfa/parser/xfa_parser_imp.h
@@ -7,18 +7,18 @@
 #ifndef XFA_FXFA_PARSER_XFA_PARSER_IMP_H_
 #define XFA_FXFA_PARSER_XFA_PARSER_IMP_H_
 
+#include <memory>
+
 #include "xfa/fde/xml/fde_xml_imp.h"
 #include "xfa/fxfa/parser/xfa_parser.h"
 
 class CXFA_XMLParser;
 
-class CXFA_SimpleParser : public IXFA_Parser {
+class CXFA_SimpleParser final : public IXFA_Parser {
  public:
   CXFA_SimpleParser(CXFA_Document* pFactory, FX_BOOL bDocumentParser = FALSE);
   ~CXFA_SimpleParser() override;
 
-  void Release() override { delete this; }
-
   int32_t StartParse(IFX_FileRead* pStream,
                      XFA_XDPPACKET ePacketID = XFA_XDPPACKET_XDP) override;
   int32_t DoParse(IFX_Pause* pPause = NULL) override;
@@ -82,12 +82,11 @@ class CXFA_SimpleParser : public IXFA_Parser {
   friend class CXFA_DocumentParser;
 };
 
-class CXFA_DocumentParser : public IXFA_Parser {
+class CXFA_DocumentParser final : public IXFA_Parser {
  public:
   CXFA_DocumentParser(CXFA_FFNotify* pNotify);
   ~CXFA_DocumentParser() override;
 
-  void Release() override { delete this; }
   int32_t StartParse(IFX_FileRead* pStream,
                      XFA_XDPPACKET ePacketID = XFA_XDPPACKET_XDP) override;
   int32_t DoParse(IFX_Pause* pPause = NULL) override;
@@ -111,13 +110,12 @@ class CXFA_DocumentParser : public IXFA_Parser {
 };
 typedef CFX_StackTemplate<CFDE_XMLNode*> CXFA_XMLNodeStack;
 
-class CXFA_XMLParser : public CFDE_XMLParser {
+class CXFA_XMLParser : public IFDE_XMLParser {
  public:
   CXFA_XMLParser(CFDE_XMLNode* pRoot, IFX_Stream* pStream);
-  ~CXFA_XMLParser();
+  ~CXFA_XMLParser() override;
 
-  virtual void Release() { delete this; }
-  virtual int32_t DoParser(IFX_Pause* pPause);
+  int32_t DoParser(IFX_Pause* pPause) override;
 
   FX_FILESIZE m_nStart[2];
   size_t m_nSize[2];
@@ -128,7 +126,7 @@ class CXFA_XMLParser : public CFDE_XMLParser {
  protected:
   CFDE_XMLNode* m_pRoot;
   IFX_Stream* m_pStream;
-  CFDE_XMLSyntaxParser* m_pParser;
+  std::unique_ptr<CFDE_XMLSyntaxParser> m_pParser;
   CFDE_XMLNode* m_pParent;
   CFDE_XMLNode* m_pChild;
   CXFA_XMLNodeStack m_NodeStack;