Implement CSS4 pseudo-class :dir()

third_party/WebKit/Source/core/css/parser/CSSSelectorParser.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/CSSSelectorParser.h"
 
 #include "core/css/CSSSelectorList.h"
 #include "core/css/StyleSheetContents.h"
 #include "core/frame/UseCounter.h"
 #include "platform/RuntimeEnabledFeatures.h"
@@ skipping 506 matching lines @@
         }
     case CSSSelector::PseudoLang:
         {
             // FIXME: CSS Selectors Level 4 allows :lang(*-foo)
             const CSSParserToken& ident = block.consumeIncludingWhitespace();
             if (ident.type() != IdentToken || !block.atEnd())
                 return nullptr;
             selector->setArgument(ident.value());
             return selector.release();
         }
+    case CSSSelector::PseudoDir:
+        {
+            const CSSParserToken& ident = block.consumeIncludingWhitespace();
+            if (ident.type() != IdentToken || !block.atEnd())
+                return nullptr;
+            selector->setArgument(ident.value());
+            return selector.release();
+        }
     case CSSSelector::PseudoNthChild:
     case CSSSelector::PseudoNthLastChild:
     case CSSSelector::PseudoNthOfType:
     case CSSSelector::PseudoNthLastOfType:
         {
             std::pair<int, int> ab;
             if (!consumeANPlusB(block, ab))
                 return nullptr;
             block.consumeWhitespace();
             if (!block.atEnd())
@@ skipping 226 matching lines @@
 
     if (!splitAfter || !splitAfter->tagHistory())
         return compoundSelector;
 
     OwnPtr<CSSParserSelector> secondCompound = splitAfter->releaseTagHistory();
     secondCompound->appendTagHistory(secondCompound->pseudoType() == CSSSelector::PseudoSlotted ? CSSSelector::ShadowSlot : CSSSelector::ShadowPseudo, compoundSelector);
     return secondCompound.release();
 }
 
 } // namespace blink