Add type cast definitions for CPDF_Number.

core/src/fpdfapi/fpdf_parser/fpdf_parser_document.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 "../../../include/fpdfapi/fpdf_parser.h"
 #include "../../../include/fpdfapi/fpdf_module.h"
 
 
@@ skipping 53 matching lines @@
   }
   indirectObj = GetIndirectObject(m_pParser->GetInfoObjNum());
   m_pInfoDict = indirectObj ? indirectObj->GetDict() : NULL;
   CPDF_Array* pIDArray = m_pParser->GetIDArray();
   if (pIDArray) {
     m_ID1 = pIDArray->GetString(0);
     m_ID2 = pIDArray->GetString(1);
   }
   FX_DWORD dwPageCount = 0;
   CPDF_Object* pCount = pLinearized->GetElement(FX_BSTRC("N"));
-  if (pCount && pCount->GetType() == PDFOBJ_NUMBER) {
+  if (ToNumber(pCount))
     dwPageCount = pCount->GetInteger();
-  }
+
   m_PageList.SetSize(dwPageCount);
   CPDF_Object* pNo = pLinearized->GetElement(FX_BSTRC("P"));
-  if (pNo && pNo->GetType() == PDFOBJ_NUMBER) {
+  if (ToNumber(pNo))
     m_dwFirstPageNo = pNo->GetInteger();
-  }
+
   CPDF_Object* pObjNum = pLinearized->GetElement(FX_BSTRC("O"));
-  if (pObjNum && pObjNum->GetType() == PDFOBJ_NUMBER) {
+  if (ToNumber(pObjNum))
     m_dwFirstPageObjNum = pObjNum->GetInteger();
-  }
 }
 void CPDF_Document::LoadPages() {
   m_PageList.SetSize(_GetPageCount());
 }
 CPDF_Document::~CPDF_Document() {
   if (m_pDocPage) {
     CPDF_ModuleMgr::Get()->GetPageModule()->ReleaseDoc(this);
     CPDF_ModuleMgr::Get()->GetPageModule()->ClearStockFont(this);
   }
   if (m_pDocRender) {
@@ skipping 258 matching lines @@
 void CPDF_Document::ClearPageData() {
   if (m_pDocPage) {
     CPDF_ModuleMgr::Get()->GetPageModule()->ClearDoc(this);
   }
 }
 void CPDF_Document::ClearRenderData() {
   if (m_pDocRender) {
     CPDF_ModuleMgr::Get()->GetRenderModule()->ClearDocData(m_pDocRender);
   }
 }