CSS Custom Properties (Variables)

Source/core/css/StylePropertySet.cpp

 /*
  * (C) 1999-2003 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012, 2013 Apple Inc. All rights reserved.
  * Copyright (C) 2011 Research In Motion Limited. All rights reserved.
  * Copyright (C) 2013 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.
@@ skipping 499 matching lines @@
         if (properties[n].metadata().m_propertyID == id) {
             // Only enabled properties should be part of the style.
             ASSERT(CSSPropertyMetadata::isEnabledProperty(propertyID));
             return n;
         }
     }
 
     return -1;
 }
 
+unsigned StylePropertySet::variableCount() const
+{
+    ASSERT(RuntimeEnabledFeatures::cssVariablesEnabled());
+    unsigned count = 0;
+    for (unsigned i = 0; i < propertyCount(); ++i) {
+        if (propertyAt(i).id() == CSSPropertyVariable)
+            count++;
+    }
+    return count;
+}
+
 DEFINE_TRACE_AFTER_DISPATCH(MutableStylePropertySet)
 {
 #if ENABLE(OILPAN)
     visitor->trace(m_cssomWrapper);
     visitor->trace(m_propertyVector);
 #endif
     StylePropertySet::traceAfterDispatch(visitor);
 }
 
 unsigned StylePropertySet::averageSizeInBytes()
@@ skipping 19 matching lines @@
 {
     return adoptRefWillBeNoop(new MutableStylePropertySet(cssParserMode));
 }
 
 PassRefPtrWillBeRawPtr<MutableStylePropertySet> MutableStylePropertySet::create(const CSSProperty* properties, unsigned count)
 {
     return adoptRefWillBeNoop(new MutableStylePropertySet(properties, count));
 }
 
 } // namespace blink