Get rid of NULLs in xfa/fxbarcode/

xfa/fxbarcode/qrcode/BC_QRCoderMode.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
 // Original code is licensed as follows:
 /*
  * Copyright 2007 ZXing authors
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *      http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
 
 #include "xfa/fxbarcode/qrcode/BC_QRCoderMode.h"
 #include "xfa/fxbarcode/qrcode/BC_QRCoderVersion.h"
 #include "xfa/fxbarcode/utils.h"
 
-CBC_QRCoderMode* CBC_QRCoderMode::sBYTE = NULL;
-CBC_QRCoderMode* CBC_QRCoderMode::sNUMERIC = NULL;
-CBC_QRCoderMode* CBC_QRCoderMode::sALPHANUMERIC = NULL;
-CBC_QRCoderMode* CBC_QRCoderMode::sKANJI = NULL;
-CBC_QRCoderMode* CBC_QRCoderMode::sECI = NULL;
-CBC_QRCoderMode* CBC_QRCoderMode::sGBK = NULL;
-CBC_QRCoderMode* CBC_QRCoderMode::sTERMINATOR = NULL;
-CBC_QRCoderMode* CBC_QRCoderMode::sFNC1_FIRST_POSITION = NULL;
-CBC_QRCoderMode* CBC_QRCoderMode::sFNC1_SECOND_POSITION = NULL;
-CBC_QRCoderMode* CBC_QRCoderMode::sSTRUCTURED_APPEND = NULL;
+CBC_QRCoderMode* CBC_QRCoderMode::sBYTE = nullptr;
+CBC_QRCoderMode* CBC_QRCoderMode::sNUMERIC = nullptr;
+CBC_QRCoderMode* CBC_QRCoderMode::sALPHANUMERIC = nullptr;
+CBC_QRCoderMode* CBC_QRCoderMode::sKANJI = nullptr;
+CBC_QRCoderMode* CBC_QRCoderMode::sECI = nullptr;
+CBC_QRCoderMode* CBC_QRCoderMode::sGBK = nullptr;
+CBC_QRCoderMode* CBC_QRCoderMode::sTERMINATOR = nullptr;
+CBC_QRCoderMode* CBC_QRCoderMode::sFNC1_FIRST_POSITION = nullptr;
+CBC_QRCoderMode* CBC_QRCoderMode::sFNC1_SECOND_POSITION = nullptr;
+CBC_QRCoderMode* CBC_QRCoderMode::sSTRUCTURED_APPEND = nullptr;
 
 CBC_QRCoderMode::CBC_QRCoderMode(int32_t* characterCountBitsForVersions,
                                  int32_t x1,
                                  int32_t x2,
                                  int32_t x3,
                                  int32_t bits,
                                  CFX_ByteString name) {
   m_characterCountBitsForVersions = characterCountBitsForVersions;
   if (m_characterCountBitsForVersions) {
     m_characterCountBitsForVersions[0] = x1;
     m_characterCountBitsForVersions[1] = x2;
     m_characterCountBitsForVersions[2] = x3;
   }
   m_name += name;
   m_bits = bits;
 }
 CBC_QRCoderMode::~CBC_QRCoderMode() {
   FX_Free(m_characterCountBitsForVersions);
 }
 void CBC_QRCoderMode::Initialize() {
   sBYTE = new CBC_QRCoderMode(FX_Alloc(int32_t, 3), 8, 16, 16, 0x4, "BYTE");
   sALPHANUMERIC =
       new CBC_QRCoderMode(FX_Alloc(int32_t, 3), 9, 11, 13, 0x2, "ALPHANUMERIC");
-  sECI = new CBC_QRCoderMode(NULL, 0, 0, 0, 0x7, "ECI");
+  sECI = new CBC_QRCoderMode(nullptr, 0, 0, 0, 0x7, "ECI");
   sKANJI = new CBC_QRCoderMode(FX_Alloc(int32_t, 3), 8, 10, 12, 0x8, "KANJI");
   sNUMERIC =
       new CBC_QRCoderMode(FX_Alloc(int32_t, 3), 10, 12, 14, 0x1, "NUMERIC");
   sGBK = new CBC_QRCoderMode(FX_Alloc(int32_t, 3), 8, 10, 12, 0x0D, "GBK");
   sTERMINATOR =
       new CBC_QRCoderMode(FX_Alloc(int32_t, 3), 0, 0, 0, 0x00, "TERMINATOR");
   sFNC1_FIRST_POSITION =
-      new CBC_QRCoderMode(NULL, 0, 0, 0, 0x05, "FNC1_FIRST_POSITION");
+      new CBC_QRCoderMode(nullptr, 0, 0, 0, 0x05, "FNC1_FIRST_POSITION");
   sFNC1_SECOND_POSITION =
-      new CBC_QRCoderMode(NULL, 0, 0, 0, 0x09, "FNC1_SECOND_POSITION");
+      new CBC_QRCoderMode(nullptr, 0, 0, 0, 0x09, "FNC1_SECOND_POSITION");
   sSTRUCTURED_APPEND = new CBC_QRCoderMode(FX_Alloc(int32_t, 3), 0, 0, 0, 0x03,
                                            "STRUCTURED_APPEND");
 }
 void CBC_QRCoderMode::Finalize() {
   delete sBYTE;
   delete sALPHANUMERIC;
   delete sECI;
   delete sKANJI;
   delete sNUMERIC;
   delete sGBK;
@@ skipping 19 matching lines @@
     case 0x7:
       return sECI;
     case 0x8:
       return sKANJI;
     case 0x9:
       return sFNC1_SECOND_POSITION;
     case 0x0D:
       return sGBK;
     default: {
       e = BCExceptionUnsupportedMode;
-      BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+      BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
     }
   }
-  return NULL;
+  return nullptr;
 }
 int32_t CBC_QRCoderMode::GetBits() {
   return m_bits;
 }
 CFX_ByteString CBC_QRCoderMode::GetName() {
   return m_name;
 }
 int32_t CBC_QRCoderMode::GetCharacterCountBits(CBC_QRCoderVersion* version,
                                                int32_t& e) {
-  if (m_characterCountBitsForVersions == NULL) {
+  if (!m_characterCountBitsForVersions) {
     e = BCExceptionCharacterNotThisMode;
     BC_EXCEPTION_CHECK_ReturnValue(e, 0);
   }
   int32_t number = version->GetVersionNumber();
   int32_t offset;
   if (number <= 9) {
     offset = 0;
   } else if (number <= 26) {
     offset = 1;
   } else {
     offset = 2;
   }
   return m_characterCountBitsForVersions[offset];
 }
 void CBC_QRCoderMode::Destroy() {
   if (sBYTE) {
     delete CBC_QRCoderMode::sBYTE;
-    sBYTE = NULL;
+    sBYTE = nullptr;
   }
   if (sNUMERIC) {
     delete CBC_QRCoderMode::sNUMERIC;
-    sNUMERIC = NULL;
+    sNUMERIC = nullptr;
   }
   if (sALPHANUMERIC) {
     delete CBC_QRCoderMode::sALPHANUMERIC;
-    sALPHANUMERIC = NULL;
+    sALPHANUMERIC = nullptr;
   }
   if (sKANJI) {
     delete CBC_QRCoderMode::sKANJI;
-    sKANJI = NULL;
+    sKANJI = nullptr;
   }
   if (sECI) {
     delete CBC_QRCoderMode::sECI;
-    sECI = NULL;
+    sECI = nullptr;
   }
   if (sGBK) {
     delete CBC_QRCoderMode::sGBK;
-    sGBK = NULL;
+    sGBK = nullptr;
   }
   if (sTERMINATOR) {
     delete CBC_QRCoderMode::sTERMINATOR;
-    sTERMINATOR = NULL;
+    sTERMINATOR = nullptr;
   }
   if (sFNC1_FIRST_POSITION) {
     delete CBC_QRCoderMode::sFNC1_FIRST_POSITION;
-    sFNC1_FIRST_POSITION = NULL;
+    sFNC1_FIRST_POSITION = nullptr;
   }
   if (sFNC1_SECOND_POSITION) {
     delete CBC_QRCoderMode::sFNC1_SECOND_POSITION;
-    sFNC1_SECOND_POSITION = NULL;
+    sFNC1_SECOND_POSITION = nullptr;
   }
   if (sSTRUCTURED_APPEND) {
     delete CBC_QRCoderMode::sSTRUCTURED_APPEND;
-    sSTRUCTURED_APPEND = NULL;
+    sSTRUCTURED_APPEND = nullptr;
   }
 }