Get CPDF_Parser out of the document creation business.

Precursor to someday using possibly subclassed documents.

Review-Url: https://codereview.chromium.org/2248123002

2 files changed, 27 insertions, 24 deletions

diff --git a/fpdfsdk/fpdf_dataavail.cpp b/fpdfsdk/fpdf_dataavail.cpp
index b7b47f86a1..3cc7fc0347 100644
--- a/fpdfsdk/fpdf_dataavail.cpp
+++ b/fpdfsdk/fpdf_dataavail.cpp
@@ -136,18 +136,19 @@ FPDFAvail_GetDocument(FPDF_AVAIL avail, FPDF_BYTESTRING password) {
   if (!pDataAvail)
     return nullptr;
 
-  CPDF_Parser* pParser = new CPDF_Parser;
+  std::unique_ptr<CPDF_Parser> pParser(new CPDF_Parser);
   pParser->SetPassword(password);
-  CPDF_Parser::Error error =
-      pParser->StartAsyncParse(pDataAvail->m_pDataAvail->GetFileRead());
+
+  std::unique_ptr<CPDF_Document> pDocument(new CPDF_Document(pParser.get()));
+  CPDF_Parser::Error error = pParser->StartAsyncParse(
+      pDataAvail->m_pDataAvail->GetFileRead(), std::move(pDocument));
   if (error != CPDF_Parser::SUCCESS) {
-    delete pParser;
     ProcessParseError(error);
     return nullptr;
   }
   pDataAvail->m_pDataAvail->SetDocument(pParser->GetDocument());
   CheckUnSupportError(pParser->GetDocument(), FPDF_ERR_SUCCESS);
-  return FPDFDocumentFromCPDFDocument(pParser->GetDocument());
+  return FPDFDocumentFromCPDFDocument(pParser.release()->GetDocument());
 }
 
 DLLEXPORT int STDCALL FPDFAvail_GetFirstPageNum(FPDF_DOCUMENT doc) {
diff --git a/fpdfsdk/fpdfview.cpp b/fpdfsdk/fpdfview.cpp
index 8aebb550ff..29fe88d943 100644
--- a/fpdfsdk/fpdfview.cpp
+++ b/fpdfsdk/fpdfview.cpp
@@ -362,24 +362,25 @@ DLLEXPORT FPDF_DOCUMENT STDCALL FPDF_LoadDocument(FPDF_STRING file_path,
     return nullptr;
   }
 
-  CPDF_Parser* pParser = new CPDF_Parser;
+  std::unique_ptr<CPDF_Parser> pParser(new CPDF_Parser);
   pParser->SetPassword(password);
 
-  CPDF_Parser::Error error = pParser->StartParse(pFileAccess);
+  std::unique_ptr<CPDF_Document> pDocument(new CPDF_Document(pParser.get()));
+  CPDF_Parser::Error error =
+      pParser->StartParse(pFileAccess, std::move(pDocument));
   if (error != CPDF_Parser::SUCCESS) {
-    delete pParser;
     ProcessParseError(error);
     return nullptr;
   }
 #ifdef PDF_ENABLE_XFA
-  CPDF_Document* pPDFDoc = pParser->GetDocument();
+  CPDF_Document* pPDFDoc = pParser.release()->GetDocument();
   if (!pPDFDoc)
     return nullptr;
 
   CPDFXFA_App* pProvider = CPDFXFA_App::GetInstance();
   return new CPDFXFA_Document(pPDFDoc, pProvider);
 #else   // PDF_ENABLE_XFA
-  return pParser->GetDocument();
+  return pParser.release()->GetDocument();
 #endif  // PDF_ENABLE_XFA
 }
 
@@ -446,35 +447,36 @@ class CMemFile final : public IFX_FileRead {
 DLLEXPORT FPDF_DOCUMENT STDCALL FPDF_LoadMemDocument(const void* data_buf,
                                                      int size,
                                                      FPDF_BYTESTRING password) {
-  CPDF_Parser* pParser = new CPDF_Parser;
-  pParser->SetPassword(password);
   CMemFile* pMemFile = new CMemFile((uint8_t*)data_buf, size);
-  CPDF_Parser::Error error = pParser->StartParse(pMemFile);
+  std::unique_ptr<CPDF_Parser> pParser(new CPDF_Parser);
+  pParser->SetPassword(password);
+
+  std::unique_ptr<CPDF_Document> pDocument(new CPDF_Document(pParser.get()));
+  CPDF_Parser::Error error =
+      pParser->StartParse(pMemFile, std::move(pDocument));
   if (error != CPDF_Parser::SUCCESS) {
-    delete pParser;
     ProcessParseError(error);
     return nullptr;
   }
-  CPDF_Document* pDoc = pParser ? pParser->GetDocument() : nullptr;
-  CheckUnSupportError(pDoc, error);
-  return FPDFDocumentFromCPDFDocument(pParser->GetDocument());
+  CheckUnSupportError(pParser->GetDocument(), error);
+  return FPDFDocumentFromCPDFDocument(pParser.release()->GetDocument());
 }
 
 DLLEXPORT FPDF_DOCUMENT STDCALL
 FPDF_LoadCustomDocument(FPDF_FILEACCESS* pFileAccess,
                         FPDF_BYTESTRING password) {
-  CPDF_Parser* pParser = new CPDF_Parser;
-  pParser->SetPassword(password);
   CPDF_CustomAccess* pFile = new CPDF_CustomAccess(pFileAccess);
-  CPDF_Parser::Error error = pParser->StartParse(pFile);
+  std::unique_ptr<CPDF_Parser> pParser(new CPDF_Parser);
+  pParser->SetPassword(password);
+
+  std::unique_ptr<CPDF_Document> pDocument(new CPDF_Document(pParser.get()));
+  CPDF_Parser::Error error = pParser->StartParse(pFile, std::move(pDocument));
   if (error != CPDF_Parser::SUCCESS) {
-    delete pParser;
     ProcessParseError(error);
     return nullptr;
   }
-  CPDF_Document* pDoc = pParser ? pParser->GetDocument() : nullptr;
-  CheckUnSupportError(pDoc, error);
-  return FPDFDocumentFromCPDFDocument(pParser->GetDocument());
+  CheckUnSupportError(pParser->GetDocument(), error);
+  return FPDFDocumentFromCPDFDocument(pParser.release()->GetDocument());
 }
 
 DLLEXPORT FPDF_BOOL STDCALL FPDF_GetFileVersion(FPDF_DOCUMENT doc,