Use nullptr_t for RefPtr, PassRefPtr and RawPtr.

Source/core/inspector/JSONParser.cpp

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 323 matching lines @@
     if (!decodeString(start, end, &buffer))
         return false;
     *output = buffer.toString();
     return true;
 }
 
 template<typename CharType>
 PassRefPtr<JSONValue> buildValue(const CharType* start, const CharType* end, const CharType** valueTokenEnd, int depth)
 {
     if (depth > stackLimit)
-        return 0;
+        return nullptr;
 
     RefPtr<JSONValue> result;
     const CharType* tokenStart;
     const CharType* tokenEnd;
     Token token = parseToken(start, end, &tokenStart, &tokenEnd);
     switch (token) {
     case InvalidToken:
-        return 0;
+        return nullptr;
     case NullToken:
         result = JSONValue::null();
         break;
     case BoolTrue:
         result = JSONBasicValue::create(true);
         break;
     case BoolFalse:
         result = JSONBasicValue::create(false);
         break;
     case Number: {
         bool ok;
         double value = charactersToDouble(tokenStart, tokenEnd - tokenStart, &ok);
         if (!ok)
-            return 0;
+            return nullptr;
         result = JSONBasicValue::create(value);
         break;
     }
     case StringLiteral: {
         String value;
         bool ok = decodeString(tokenStart + 1, tokenEnd - 1, &value);
         if (!ok)
-            return 0;
+            return nullptr;
         result = JSONString::create(value);
         break;
     }
     case ArrayBegin: {
         RefPtr<JSONArray> array = JSONArray::create();
         start = tokenEnd;
         token = parseToken(start, end, &tokenStart, &tokenEnd);
         while (token != ArrayEnd) {
             RefPtr<JSONValue> arrayNode = buildValue(start, end, &tokenEnd, depth + 1);
             if (!arrayNode)
-                return 0;
+                return nullptr;
             array->pushValue(arrayNode);
 
             // After a list value, we expect a comma or the end of the list.
             start = tokenEnd;
             token = parseToken(start, end, &tokenStart, &tokenEnd);
             if (token == ListSeparator) {
                 start = tokenEnd;
                 token = parseToken(start, end, &tokenStart, &tokenEnd);
                 if (token == ArrayEnd)
-                    return 0;
+                    return nullptr;
             } else if (token != ArrayEnd) {
                 // Unexpected value after list value. Bail out.
-                return 0;
+                return nullptr;
             }
         }
         if (token != ArrayEnd)
-            return 0;
+            return nullptr;
         result = array.release();
         break;
     }
     case ObjectBegin: {
         RefPtr<JSONObject> object = JSONObject::create();
         start = tokenEnd;
         token = parseToken(start, end, &tokenStart, &tokenEnd);
         while (token != ObjectEnd) {
             if (token != StringLiteral)
-                return 0;
+                return nullptr;
             String key;
             if (!decodeString(tokenStart + 1, tokenEnd - 1, &key))
-                return 0;
+                return nullptr;
             start = tokenEnd;
 
             token = parseToken(start, end, &tokenStart, &tokenEnd);
             if (token != ObjectPairSeparator)
-                return 0;
+                return nullptr;
             start = tokenEnd;
 
             RefPtr<JSONValue> value = buildValue(start, end, &tokenEnd, depth + 1);
             if (!value)
-                return 0;
+                return nullptr;
             object->setValue(key, value);
             start = tokenEnd;
 
             // After a key/value pair, we expect a comma or the end of the
             // object.
             token = parseToken(start, end, &tokenStart, &tokenEnd);
             if (token == ListSeparator) {
                 start = tokenEnd;
                 token = parseToken(start, end, &tokenStart, &tokenEnd);
                 if (token == ObjectEnd)
-                    return 0;
+                    return nullptr;
             } else if (token != ObjectEnd) {
                 // Unexpected value after last object value. Bail out.
-                return 0;
+                return nullptr;
             }
         }
         if (token != ObjectEnd)
-            return 0;
+            return nullptr;
         result = object.release();
         break;
     }
 
     default:
         // We got a token that's not a value.
-        return 0;
+        return nullptr;
     }
     *valueTokenEnd = tokenEnd;
     return result.release();
 }
 
 template<typename CharType>
 PassRefPtr<JSONValue> parseJSONInternal(const CharType* start, unsigned length)
 {
     const CharType* end = start + length;
     const CharType *tokenEnd;
     RefPtr<JSONValue> value = buildValue(start, end, &tokenEnd, 0);
     if (!value || tokenEnd != end)
-        return 0;
+        return nullptr;
     return value.release();
 }
 
 } // anonymous namespace
 
 PassRefPtr<JSONValue> parseJSON(const String& json)
 {
     if (json.isEmpty())
-        return 0;
+        return nullptr;
     if (json.is8Bit())
         return parseJSONInternal(json.characters8(), json.length());
     return parseJSONInternal(json.characters16(), json.length());
 }
 
 } // namespace WebCore