/*

 * 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.

 * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of

 *     its contributors may be used to endorse or promote products derived

 *     from this software without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "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 OR ITS 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 SourceCode_h

#define SourceCode_h

#include "SourceProvider.h"

#include <wtf/RefPtr.h>

namespace JSC {

    class SourceCode {

    public:

        SourceCode()

            : m_provider(0)

            , m_startChar(0)

            , m_endChar(0)

            , m_firstLine(0)

        {

        }

        SourceCode(PassRefPtr<SourceProvider> provider, int firstLine = 1)

            : m_provider(provider)

            , m_startChar(0)

            , m_endChar(m_provider->length())

            , m_firstLine(std::max(firstLine, 1))

        {

        }

        SourceCode(PassRefPtr<SourceProvider> provider, int start, int end, int firstLine)

            : m_provider(provider)

            , m_startChar(start)

            , m_endChar(end)

            , m_firstLine(std::max(firstLine, 1))

        {

        }

        UString toString() const

        {

            if (!m_provider)

                return UString();

            return m_provider->getRange(m_startChar, m_endChar);

        }

        bool isNull() const { return !m_provider; }

        SourceProvider* provider() const { return m_provider.get(); }

        int firstLine() const { return m_firstLine; }

        int startOffset() const { return m_startChar; }

        int endOffset() const { return m_endChar; }

        const UChar* data() const { return m_provider->data() + m_startChar; }

        int length() const { return m_endChar - m_startChar; }

    private:

        RefPtr<SourceProvider> m_provider;

        int m_startChar;

        int m_endChar;

        int m_firstLine;

    };

    inline SourceCode makeSource(const UString& source, const UString& url = UString(), int firstLine = 1)

    {

        return SourceCode(UStringSourceProvider::create(source, url), firstLine);

    }

} // namespace JSC

#endif // SourceCode_h