--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WebCore/dom/SpaceSplitString.h	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,90 @@
+/*
+ * Copyright (C) 2007, 2008, 2010 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., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ *
+ */
+
+#ifndef SpaceSplitString_h
+#define SpaceSplitString_h
+
+#include "AtomicString.h"
+#include <wtf/OwnPtr.h>
+#include <wtf/PassOwnPtr.h>
+#include <wtf/Vector.h>
+
+namespace WebCore {
+
+    class SpaceSplitStringData : public Noncopyable {
+    public:
+        SpaceSplitStringData(const String& string, bool shouldFoldCase)
+            : m_string(string), m_shouldFoldCase(shouldFoldCase), m_createdVector(false)
+        {
+        }
+
+        bool contains(const AtomicString& string)
+        {
+            ensureVector();
+            size_t size = m_vector.size();
+            for (size_t i = 0; i < size; ++i) {
+                if (m_vector[i] == string)
+                    return true;
+            }
+            return false;
+        }
+
+        bool containsAll(SpaceSplitStringData&);
+
+        size_t size() { ensureVector(); return m_vector.size(); }
+        const AtomicString& operator[](size_t i) { ensureVector(); ASSERT(i < size()); return m_vector[i]; }
+
+    private:
+        void ensureVector() { if (!m_createdVector) createVector(); }
+        void createVector();
+
+        typedef Vector<AtomicString, 8> StringVector;
+        String m_string;
+        StringVector m_vector;
+        bool m_shouldFoldCase;
+        bool m_createdVector;
+    };
+
+    class SpaceSplitString {
+    public:
+        SpaceSplitString() { }
+        SpaceSplitString(const String& string, bool shouldFoldCase) : m_data(adoptPtr(new SpaceSplitStringData(string, shouldFoldCase))) { }
+
+        void set(const String& string, bool shouldFoldCase) { m_data = adoptPtr(new SpaceSplitStringData(string, shouldFoldCase)); }
+        void clear() { m_data.clear(); }
+
+        bool contains(const AtomicString& string) const { return m_data && m_data->contains(string); }
+        bool containsAll(const SpaceSplitString& names) const { return !names.m_data || (m_data && m_data->containsAll(*names.m_data)); }
+
+        size_t size() const { return m_data ? m_data->size() : 0; }
+        const AtomicString& operator[](size_t i) const { ASSERT(i < size()); return (*m_data)[i]; }
+
+    private:
+        OwnPtr<SpaceSplitStringData> m_data;
+    };
+
+    inline bool isClassWhitespace(UChar c)
+    {
+        return c == ' ' || c == '\r' || c == '\n' || c == '\t' || c == '\f';
+    }
+
+} // namespace WebCore
+
+#endif // SpaceSplitString_h