/*

 * 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