Optimize hasTagName when called on an HTMLElement / SVGElement

Source/core/svg/SVGElement.h

 /*
  * Copyright (C) 2004, 2005, 2006, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006 Rob Buis <buis@kde.org>
- * Copyright (C) 2009 Apple Inc. All rights reserved.
+ * Copyright (C) 2009, 2014 Apple Inc. 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.
  */
 
 #ifndef SVGElement_h
 #define SVGElement_h
 
-#include "core/SVGElementTypeHelpers.h"
+#include "core/SVGNames.h"
 #include "core/dom/Element.h"
 #include "core/svg/SVGAnimatedString.h"
 #include "core/svg/SVGParsingError.h"
 #include "core/svg/properties/SVGPropertyInfo.h"
 #include "platform/Timer.h"
 #include "wtf/HashMap.h"
 #include "wtf/OwnPtr.h"
 
 namespace blink {
 
 class AffineTransform;
 class CSSCursorImageValue;
 class Document;
 class SVGAnimatedPropertyBase;
 class SubtreeLayoutScope;
 class SVGCursorElement;
 class SVGDocumentExtensions;
 class SVGElement;
 class SVGElementRareData;
 class SVGFitToViewBox;
 class SVGSVGElement;
+class SVGUseElement;
 
 void mapAttributeToCSSProperty(HashMap<StringImpl*, CSSPropertyID>* propertyNameToIdMap, const QualifiedName& attrName);
 
 typedef WillBeHeapHashSet<RawPtrWillBeMember<SVGElement> > SVGElementSet;
 
 class SVGElement : public Element {
 public:
     virtual ~SVGElement();
     virtual void attach(const AttachContext&) OVERRIDE;
     virtual void detach(const AttachContext&) OVERRIDE;
 
     virtual short tabIndex() const OVERRIDE;
     virtual bool supportsFocus() const OVERRIDE { return false; }
 
     bool isOutermostSVGSVGElement() const;
 
+    bool hasTagName(const SVGQualifiedName& name) const { return hasLocalName(name.localName()); }
+
     virtual String title() const OVERRIDE;
     bool hasRelativeLengths() const { return !m_elementsWithRelativeLengths.isEmpty(); }
     static bool isAnimatableCSSProperty(const QualifiedName&);
     enum CTMScope {
         NearestViewportScope, // Used by SVGGraphicsElement::getCTM()
         ScreenScope, // Used by SVGGraphicsElement::getScreenCTM()
         AncestorScope // Used by SVGSVGElement::get{Enclosure|Intersection}List()
     };
     virtual AffineTransform localCoordinateSpaceTransform(CTMScope) const;
     virtual bool needsPendingResourceHandling() const { return true; }
@@ skipping 180 matching lines @@
             QualifiedNameComponents components = { nullAtom.impl(), key.localName().impl(), key.namespaceURI().impl() };
             return hashComponents(components);
         }
         return DefaultHash<QualifiedName>::Hash::hash(key);
     }
     static bool equal(const QualifiedName& a, const QualifiedName& b) { return a.matches(b); }
 };
 
 DEFINE_ELEMENT_TYPE_CASTS(SVGElement, isSVGElement());
 
-template <> inline bool isElementOfType<const SVGElement>(const Node& node) { return node.isSVGElement(); }
+template <typename T> bool isElementOfType(const SVGElement&);
+template <> inline bool isElementOfType<const SVGElement>(const SVGElement&) { return true; }
+
+inline bool Node::hasTagName(const SVGQualifiedName& name) const
+{
+    return isSVGElement() && toSVGElement(*this).hasTagName(name);
+}
 
 }
 
+#include "core/SVGElementTypeHelpers.h"
+
 #endif