Make CSSParserToken::operator== perform a full string equality.

third_party/WebKit/Source/core/css/parser/CSSParserToken.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "core/css/parser/CSSParserToken.h"
 
 #include "core/css/CSSMarkup.h"
 #include "core/css/parser/CSSPropertyParser.h"
 #include "wtf/HashMap.h"
 #include "wtf/text/StringBuilder.h"
@@ skipping 129 matching lines @@
         || tokenType == StringToken;
 }
 
 CSSParserToken CSSParserToken::copyWithUpdatedString(const CSSParserString& parserString) const
 {
     CSSParserToken copy(*this);
     copy.initValueFromCSSParserString(parserString);
     return copy;
 }
 
+bool CSSParserToken::valueDataCharRawEqual(const CSSParserToken& other) const
+{
+    if (m_valueLength != other.m_valueLength)
+        return false;
+
+    if (m_valueDataCharRaw == other.m_valueDataCharRaw && m_valueIs8Bit == other.m_valueIs8Bit)
+        return true;
+
+    if (m_valueIs8Bit) {
+        return other.m_valueIs8Bit ?
+            equal(static_cast<const LChar*>(m_valueDataCharRaw), static_cast<const LChar*>(other.m_valueDataCharRaw), m_valueLength) :
+            equal(static_cast<const LChar*>(m_valueDataCharRaw), static_cast<const UChar*>(other.m_valueDataCharRaw), m_valueLength);
+    } else {
+        return other.m_valueIs8Bit ?
+            equal(static_cast<const UChar*>(m_valueDataCharRaw), static_cast<const LChar*>(other.m_valueDataCharRaw), m_valueLength) :
+            equal(static_cast<const UChar*>(m_valueDataCharRaw), static_cast<const UChar*>(other.m_valueDataCharRaw), m_valueLength);
+    }
+}
+
 bool CSSParserToken::operator==(const CSSParserToken& other) const
 {
     if (m_type != other.m_type)
         return false;
     switch (m_type) {
     case DelimiterToken:
         return delimiter() == other.delimiter();
     case HashToken:
         if (m_hashTokenType != other.m_hashTokenType)
             return false;
         // fallthrough
     case IdentToken:
     case FunctionToken:
     case StringToken:
     case UrlToken:
-        return m_valueDataCharRaw == other.m_valueDataCharRaw && m_valueLength == other.m_valueLength && m_valueIs8Bit == other.m_valueIs8Bit;
+        return valueDataCharRawEqual(other);
     case DimensionToken:
-        if (m_valueDataCharRaw != other.m_valueDataCharRaw || m_valueLength != other.m_valueLength || m_valueIs8Bit != other.m_valueIs8Bit)
+        if (!valueDataCharRawEqual(other))
             return false;
         // fallthrough
     case NumberToken:
     case PercentageToken:
         return m_numericSign == other.m_numericSign && m_numericValue == other.m_numericValue && m_numericValueType == other.m_numericValueType;
     case UnicodeRangeToken:
         return m_unicodeRange.start == other.m_unicodeRange.start && m_unicodeRange.end == other.m_unicodeRange.end;
     default:
         return true;
     }
@@ skipping 86 matching lines @@
         return builder.append('}');
 
     case EOFToken:
     case CommentToken:
         ASSERT_NOT_REACHED();
         return;
     }
 }
 
 } // namespace blink