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 {
@@ skipping 90 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 123 matching lines @@
   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