Get rid of NULLs in xfa/

xfa/fxfa/fm2js/xfa_fmparse.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/fxfa/fm2js/xfa_fmparse.h"
 
 #include <memory>
 
@@ skipping 494 matching lines @@
     case TOKstring:
       e.reset(new CXFA_FMStringExpression(line, m_pToken->m_wstring));
       NextToken();
       break;
     case TOKidentifier: {
       CFX_WideStringC wsIdentifier(m_pToken->m_wstring);
       NextToken();
       if (m_pToken->m_type == TOKlbracket) {
         CXFA_FMSimpleExpression* s = ParseIndexExpression();
         if (s) {
-          e.reset(new CXFA_FMDotAccessorExpression(line, NULL, TOKdot,
+          e.reset(new CXFA_FMDotAccessorExpression(line, nullptr, TOKdot,
                                                    wsIdentifier, s));
         }
         NextToken();
       } else {
         e.reset(new CXFA_FMIdentifierExpressionn(line, wsIdentifier));
       }
     } break;
     case TOKif:
       e.reset(new CXFA_FMIdentifierExpressionn(line, m_pToken->m_wstring));
       NextToken();
@@ skipping 126 matching lines @@
           } else if (m_pToken->m_type == TOKlbracket) {
             std::unique_ptr<CXFA_FMSimpleExpression> s(ParseIndexExpression());
             if (!(m_pErrorInfo->message.IsEmpty())) {
               delete e;
               return nullptr;
             }
             e = new CXFA_FMDotAccessorExpression(tempLine, e, TOKdot, tempStr,
                                                  s.release());
           } else {
             CXFA_FMSimpleExpression* s = new CXFA_FMIndexExpression(
-                tempLine, ACCESSOR_NO_INDEX, NULL, FALSE);
+                tempLine, ACCESSOR_NO_INDEX, nullptr, FALSE);
             e = new CXFA_FMDotAccessorExpression(line, e, TOKdot, tempStr, s);
             continue;
           }
         } else {
           CFX_WideString ws_TempString(m_pToken->m_wstring);
           Error(m_pToken->m_uLinenum, kFMErrExpectedIdentifier,
                 ws_TempString.c_str());
           return e;
         }
         break;
       case TOKdotdot:
         NextToken();
         if (m_pToken->m_type == TOKidentifier) {
           CFX_WideStringC tempStr = m_pToken->m_wstring;
           uint32_t tempLine = m_pToken->m_uLinenum;
           NextToken();
           if (m_pToken->m_type == TOKlbracket) {
             std::unique_ptr<CXFA_FMSimpleExpression> s(ParseIndexExpression());
             if (!(m_pErrorInfo->message.IsEmpty())) {
               delete e;
               return nullptr;
             }
             e = new CXFA_FMDotDotAccessorExpression(tempLine, e, TOKdotdot,
                                                     tempStr, s.release());
           } else {
             CXFA_FMSimpleExpression* s = new CXFA_FMIndexExpression(
-                tempLine, ACCESSOR_NO_INDEX, NULL, FALSE);
+                tempLine, ACCESSOR_NO_INDEX, nullptr, FALSE);
             e = new CXFA_FMDotDotAccessorExpression(line, e, TOKdotdot, tempStr,
                                                     s);
             continue;
           }
         } else {
           CFX_WideString ws_TempString(m_pToken->m_wstring);
           Error(m_pToken->m_uLinenum, kFMErrExpectedIdentifier,
                 ws_TempString.c_str());
           return e;
         }
         break;
       case TOKdotscream:
         NextToken();
         if (m_pToken->m_type == TOKidentifier) {
           CFX_WideStringC tempStr = m_pToken->m_wstring;
           uint32_t tempLine = m_pToken->m_uLinenum;
           NextToken();
           if (m_pToken->m_type == TOKlbracket) {
             std::unique_ptr<CXFA_FMSimpleExpression> s(ParseIndexExpression());
             if (!(m_pErrorInfo->message.IsEmpty())) {
               delete e;
               return nullptr;
             }
             e = new CXFA_FMDotAccessorExpression(tempLine, e, TOKdotscream,
                                                  tempStr, s.release());
           } else {
             CXFA_FMSimpleExpression* s = new CXFA_FMIndexExpression(
-                tempLine, ACCESSOR_NO_INDEX, NULL, FALSE);
+                tempLine, ACCESSOR_NO_INDEX, nullptr, FALSE);
             e = new CXFA_FMDotAccessorExpression(line, e, TOKdotscream, tempStr,
                                                  s);
             continue;
           }
         } else {
           CFX_WideString ws_TempString(m_pToken->m_wstring);
           Error(m_pToken->m_uLinenum, kFMErrExpectedIdentifier,
                 ws_TempString.c_str());
           return e;
         }
         break;
       case TOKdotstar: {
         CXFA_FMSimpleExpression* s =
-            new CXFA_FMIndexExpression(line, ACCESSOR_NO_INDEX, NULL, FALSE);
+            new CXFA_FMIndexExpression(line, ACCESSOR_NO_INDEX, nullptr, FALSE);
         e = new CXFA_FMDotAccessorExpression(line, e, TOKdotstar,
                                              FX_WSTRC(L"*"), s);
       } break;
       default:
         return e;
     }
     NextToken();
   }
   return e;
 }
@@ skipping 298 matching lines @@
   NextToken();
   e.reset(ParseBlockExpression());
   Check(TOKend);
   if (m_pErrorInfo->message.IsEmpty()) {
     e.reset(new CXFA_FMDoExpression(line, e.release()));
   } else {
     e.reset();
   }
   return e.release();
 }