Add type cast definitions for CPDF_Array.

fpdfsdk/src/fsdk_actionhandler.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/fsdk_define.h"
 #include "../include/fsdk_mgr.h"
 #include "../include/fsdk_actionhandler.h"
 #include "../include/javascript/IJavaScript.h"
@@ skipping 407 matching lines @@
     case CPDF_Action::Trans:
       break;
     case CPDF_Action::GoTo3DView:
       break;
     default:
       break;
   }
 }
 
 FX_BOOL CPDFSDK_ActionHandler::IsValidDocView(CPDFSDK_Document* pDocument) {
-  ASSERT(pDocument != NULL);
+  ASSERT(pDocument);
   return TRUE;
 }
 
 void CPDFSDK_ActionHandler::DoAction_GoTo(CPDFSDK_Document* pDocument,
                                           const CPDF_Action& action) {
   ASSERT(action);
 
   CPDF_Document* pPDFDocument = pDocument->GetDocument();
-  ASSERT(pPDFDocument != NULL);
-  CPDFDoc_Environment* pApp = pDocument->GetEnv();
-  ASSERT(pApp != NULL);
+  ASSERT(pPDFDocument);
 
   CPDF_Dest MyDest = action.GetDest(pPDFDocument);
   int nPageIndex = MyDest.GetPageIndex(pPDFDocument);
   int nFitType = MyDest.GetZoomMode();
-  const CPDF_Array* pMyArray = (CPDF_Array*)MyDest.GetObject();
-  float* pPosAry = NULL;
+  const CPDF_Array* pMyArray = ToArray(MyDest.GetObject());
+  float* pPosAry = nullptr;
   int sizeOfAry = 0;
-  if (pMyArray != NULL) {
+  if (pMyArray) {
     pPosAry = new float[pMyArray->GetCount()];
     int j = 0;
     for (int i = 2; i < (int)pMyArray->GetCount(); i++) {
       pPosAry[j++] = pMyArray->GetFloat(i);
     }
     sizeOfAry = j;
   }
+
+  CPDFDoc_Environment* pApp = pDocument->GetEnv();
   pApp->FFI_DoGoToAction(nPageIndex, nFitType, pPosAry, sizeOfAry);
   delete[] pPosAry;
 }
 
 void CPDFSDK_ActionHandler::DoAction_GoToR(CPDFSDK_Document* pDocument,
                                            const CPDF_Action& action) {}
 
 void CPDFSDK_ActionHandler::DoAction_Launch(CPDFSDK_Document* pDocument,
                                             const CPDF_Action& action) {}
 
@@ skipping 213 matching lines @@
   CPDFSDK_InterForm* pInterForm = (CPDFSDK_InterForm*)pDocument->GetInterForm();
   ASSERT(pInterForm != NULL);
 
   if (pInterForm->DoAction_ImportData(action)) {
     pDocument->SetChangeMark();
     return TRUE;
   }
 
   return FALSE;
 }