Improve named grid areas parsing

third_party/WebKit/Source/core/css/CSSMarkup.cpp

 /*
  * Copyright (C) 2003 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2005 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Nicholas Shanks <webkit@nickshanks.com>
  * Copyright (C) 2008 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2012 Adobe Systems Incorporated. All rights reserved.
  * Copyright (C) 2012 Intel Corporation. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  */
 
 #include "core/css/CSSMarkup.h"
 
+#include "core/css/parser/CSSParserIdioms.h"
 #include "wtf/HexNumber.h"
 #include "wtf/text/StringBuffer.h"
 #include "wtf/text/StringBuilder.h"
 
 namespace blink {
 
 template <typename CharacterType>
 static inline bool isCSSTokenizerIdentifier(const CharacterType* characters, unsigned length)
 {
     const CharacterType* end = characters + length;
 
     // -?
     if (characters != end && characters[0] == '-')
         ++characters;
 
     // {nmstart}
-    if (characters == end || !(characters[0] == '_' || characters[0] >= 128 || isASCIIAlpha(characters[0])))
+    if (characters == end || !isNameStartCodePoint(characters[0]))
         return false;
     ++characters;
 
     // {nmchar}*
     for (; characters != end; ++characters) {
-        if (!(characters[0] == '_' || characters[0] == '-' || characters[0] >= 128 || isASCIIAlphanumeric(characters[0])))
+        if (!isNameCodePoint(characters[0]))
             return false;
     }
 
     return true;
 }
 
 // "ident" from the CSS tokenizer, minus backslash-escape sequences
 static bool isCSSTokenizerIdentifier(const String& string)
 {
     unsigned length = string.length();
@@ skipping 86 matching lines @@
 {
     return "url(" + serializeString(string) + ")";
 }
 
 String serializeFontFamily(const String& string)
 {
     return isCSSTokenizerIdentifier(string) ? string : serializeString(string);
 }
 
 } // namespace blink