Split CSSPrimitiveValue into CSSPrimitiveValue and CSSIdentifierValue

third_party/WebKit/Source/core/css/CSSValue.h

 /*
  * (C) 1999-2003 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008 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 CSSValue_h
 #define CSSValue_h
 
 #include "core/CoreExport.h"
 #include "platform/heap/Handle.h"
 #include "wtf/RefPtr.h"
 
 namespace blink {
 
+class Length;
+
 class CORE_EXPORT CSSValue : public GarbageCollectedFinalized<CSSValue> {
 public:
     // Override operator new to allocate CSSValue subtype objects onto
     // a dedicated heap.
     GC_PLUGIN_IGNORE("crbug.com/443854")
     void* operator new(size_t size)
     {
         return allocateObject(size, false);
     }
     static void* allocateObject(size_t size, bool isEager)
     {
         ThreadState* state = ThreadStateFor<ThreadingTrait<CSSValue>::Affinity>::state();
         const char typeName[] = "blink::CSSValue";
         return ThreadHeap::allocateOnArenaIndex(state, size, isEager ? BlinkGC::EagerSweepArenaIndex : BlinkGC::CSSValueArenaIndex, GCInfoTrait<CSSValue>::index(), typeName);
     }
 
+    // TODO(sashab): Remove this method and move logic to the caller.
+    static CSSValue* create(const Length& value, float zoom);
+
     String cssText() const;
 
     bool isPrimitiveValue() const { return m_classType == PrimitiveClass; }
+    bool isIdentifierValue() const { return m_classType == IdentifierClass; }
     bool isValuePair() const { return m_classType == ValuePairClass; }
     bool isValueList() const { return m_classType >= ValueListClass; }
 
     bool isBaseValueList() const { return m_classType == ValueListClass; }
 
     bool isBasicShapeValue() const { return m_classType >= BasicShapeCircleClass && m_classType <= BasicShapeInsetClass; }
     bool isBasicShapeCircleValue() const { return m_classType == BasicShapeCircleClass; }
     bool isBasicShapeEllipseValue() const { return m_classType == BasicShapeEllipseClass; }
     bool isBasicShapePolygonValue() const { return m_classType == BasicShapePolygonClass; }
     bool isBasicShapeInsetValue() const { return m_classType == BasicShapeInsetClass; }
@@ skipping 48 matching lines @@
     // ~CSSValue should be public, because non-public ~CSSValue causes C2248
     // error: 'blink::CSSValue::~CSSValue' : cannot access protected member
     // declared in class 'blink::CSSValue' when compiling
     // 'source\wtf\refcounted.h' by using msvc.
     ~CSSValue() { }
 
 protected:
     static const size_t ClassTypeBits = 6;
     enum ClassType {
         PrimitiveClass,
+        IdentifierClass,
         ColorClass,
         CounterClass,
         QuadClass,
         CustomIdentClass,
         StringClass,
         URIClass,
         ValuePairClass,
 
         // Basic shape classes.
         // TODO(sashab): Represent these as a single subclass, BasicShapeClass.
@@ skipping 126 matching lines @@
         return false;
     return first->equals(*second);
 }
 
 #define DEFINE_CSS_VALUE_TYPE_CASTS(thisType, predicate) \
     DEFINE_TYPE_CASTS(thisType, CSSValue, value, value->predicate, value.predicate)
 
 } // namespace blink
 
 #endif // CSSValue_h