/*

 * Copyright (C) 2008 Apple Inc. All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 *

 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY

 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR

 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,

 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,

 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR

 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY

 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 

 */

#ifndef OpaqueJSString_h

#define OpaqueJSString_h

#include <runtime/UString.h>

namespace JSC {

    class Identifier;

    class JSGlobalData;

}

struct OpaqueJSString : public ThreadSafeShared<OpaqueJSString> {

    static PassRefPtr<OpaqueJSString> create() // null

    {

        return adoptRef(new OpaqueJSString);

    }

    static PassRefPtr<OpaqueJSString> create(const UChar* characters, unsigned length)

    {

        return adoptRef(new OpaqueJSString(characters, length));

    }

    static PassRefPtr<OpaqueJSString> create(const JSC::UString&);

    UChar* characters() { return this ? m_characters : 0; }

    unsigned length() { return this ? m_length : 0; }

    JSC::UString ustring() const;

    JSC::Identifier identifier(JSC::JSGlobalData*) const;

private:

    friend class WTF::ThreadSafeShared<OpaqueJSString>;

    OpaqueJSString()

        : m_characters(0)

        , m_length(0)

    {

    }

    OpaqueJSString(const UChar* characters, unsigned length)

        : m_length(length)

    {

        m_characters = new UChar[length];

        memcpy(m_characters, characters, length * sizeof(UChar));

    }

    ~OpaqueJSString()

    {

        delete[] m_characters;

    }

    UChar* m_characters;

    unsigned m_length;

};

#endif