Call CXFA_Object::ToNode() rather than C-style casting.

xfa/src/fxfa/src/parser/xfa_layout_pagemgr_new.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 "xfa/src/foxitlib.h"
 #include "xfa/src/fxfa/src/common/xfa_utils.h"
 #include "xfa/src/fxfa/src/common/xfa_object.h"
 #include "xfa/src/fxfa/src/common/xfa_document.h"
@@ skipping 275 matching lines @@
           wsTargetAll.Mid(iSpliteIndex, iSpliteNextIndex - iSpliteIndex);
     } else {
       wsTargetExpr = wsTargetAll;
     }
     if (wsTargetExpr.IsEmpty()) {
       return NULL;
     }
     bTargetAllFind = FALSE;
     if (wsTargetExpr.GetAt(0) == '#') {
       CXFA_Node* pNode = pDocument->GetNodeByID(
-          (CXFA_Node*)pDocument->GetXFAObject(XFA_HASHCODE_Template),
+          ToNode(pDocument->GetXFAObject(XFA_HASHCODE_Template)),
           wsTargetExpr.Mid(1));
       if (pNode) {
         return pNode;
       }
     } else if (bNewExprStyle) {
       CFX_WideString wsProcessedTarget = wsTargetExpr;
       if (wsTargetExpr.Left(4) == FX_WSTRC(L"som(") &&
           wsTargetExpr.Right(1) == FX_WSTRC(L")")) {
         wsProcessedTarget = wsTargetExpr.Mid(4, wsTargetExpr.GetLength() - 5);
       }
       XFA_RESOLVENODE_RS rs;
       int32_t iCount = pDocument->GetScriptContext()->ResolveObjects(
           pPageSetRoot, wsProcessedTarget, rs,
           XFA_RESOLVENODE_Children | XFA_RESOLVENODE_Properties |
               XFA_RESOLVENODE_Attributes | XFA_RESOLVENODE_Siblings |
               XFA_RESOLVENODE_Parent);
       if (iCount > 0 && rs.nodes[0]->IsNode()) {
-        return (CXFA_Node*)rs.nodes[0];
+        return rs.nodes[0]->AsNode();
       }
     }
     iSpliteIndex = iSpliteNextIndex;
   }
   return NULL;
 }
 
 FX_BOOL XFA_LayoutPageMgr_RunBreakTestScript(CXFA_Node* pTestScript) {
   CFX_WideString wsExpression;
   pTestScript->TryContent(wsExpression);
@@ skipping 1407 matching lines @@
                 }
               }
               if (pExistingNode) {
                 pParentNode->RemoveChild(pExistingNode);
               }
             }
             pContainerItem->m_pOldSubform = pNewSubform;
           }
           pContainerItem->m_pFormNode = pDocument->DataMerge_CopyContainer(
               pContainerItem->m_pFormNode, pParentNode,
-              (CXFA_Node*)pDocument->GetXFAObject(XFA_HASHCODE_Record), TRUE);
+              ToNode(pDocument->GetXFAObject(XFA_HASHCODE_Record)), TRUE);
         } break;
         case XFA_ELEMENT_ContentArea: {
           CXFA_Node* pParentNode = pContainerItem->m_pParent->m_pFormNode;
           for (CXFA_Node* pChildNode =
                    pParentNode->GetNodeItem(XFA_NODEITEM_FirstChild);
                pChildNode;
                pChildNode = pChildNode->GetNodeItem(XFA_NODEITEM_NextSibling)) {
             if (pChildNode->GetTemplateNode() != pContainerItem->m_pFormNode) {
               continue;
             }
             pContainerItem->m_pFormNode = pChildNode;
             break;
           }
         } break;
         default:
           break;
       }
     }
     if (!pPendingPageSet->GetNodeItem(XFA_NODEITEM_Parent)) {
       CXFA_Node* pFormToplevelSubform =
-          ((CXFA_Node*)pDocument->GetXFAObject(XFA_HASHCODE_Form))
+          pDocument->GetXFAObject(XFA_HASHCODE_Form)
+              ->AsNode()
               ->GetFirstChildByClass(XFA_ELEMENT_Subform);
       pFormToplevelSubform->InsertChild(pPendingPageSet);
     }
     pDocument->DataMerge_UpdateBindingRelations(pPendingPageSet);
     pPendingPageSet->SetFlag(XFA_NODEFLAG_Initialized);
   }
   pPendingPageSet = GetRootLayoutItem()->m_pFormNode;
   while (pPendingPageSet) {
     CXFA_Node* pNextPendingPageSet =
         pPendingPageSet->GetNextSameClassSibling(XFA_ELEMENT_PageSet);
@@ skipping 234 matching lines @@
   }
   pRootLayoutItem = m_pPageSetLayoutItemRoot;
   CXFA_ContainerLayoutItem* pNextLayout = NULL;
   for (; pRootLayoutItem; pRootLayoutItem = pNextLayout) {
     pNextLayout = (CXFA_ContainerLayoutItem*)pRootLayoutItem->m_pNextSibling;
     XFA_ReleaseLayoutItem_NoPageArea(pRootLayoutItem);
   }
   m_pPageSetLayoutItemRoot = NULL;
 #endif
 }