/*
 * Copyright (C) 2008, 2009 Google 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:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * 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.
 *     * Neither the name of Google Inc. 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 THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
 * OWNER 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 ScriptSourceCode_h
#define ScriptSourceCode_h

#include "bindings/core/v8/ScriptStreamer.h"
#include "core/fetch/ResourcePtr.h"
#include "core/fetch/ScriptResource.h"
#include "platform/weborigin/KURL.h"
#include "wtf/PassOwnPtr.h"
#include "wtf/text/TextPosition.h"
#include "wtf/text/WTFString.h"

namespace blink {

class ScriptSourceCode {
public:
    ScriptSourceCode(const String& source, const KURL& url = KURL(), const TextPosition& startPosition = TextPosition::minimumPosition())
        : m_source(source)
        , m_resource(0)
        , m_url(url)
        , m_startPosition(startPosition)
    {
        if (!m_url.isEmpty())
            m_url.removeFragmentIdentifier();
    }

    // We lose the encoding information from ScriptResource.
    // Not sure if that matters.
    ScriptSourceCode(ScriptResource* resource)
        : m_source(resource->script())
        , m_resource(resource)
        , m_startPosition(TextPosition::minimumPosition())
    {
    }

    ScriptSourceCode(PassRefPtr<ScriptStreamer> streamer, ScriptResource* resource)
        : m_source(resource->script())
        , m_resource(resource)
        , m_streamer(streamer)
        , m_startPosition(TextPosition::minimumPosition())
    {
    }

    bool isEmpty() const { return m_source.isEmpty(); }

    const String& source() const { return m_source; }
    ScriptResource* resource() const { return m_resource.get(); }
    const KURL& url() const
    {
        if (m_url.isEmpty() && m_resource) {
            m_url = m_resource->response().url();
            if (!m_url.isEmpty())
                m_url.removeFragmentIdentifier();
        }
        return m_url;
    }
    int startLine() const { return m_startPosition.m_line.oneBasedInt(); }
    const TextPosition& startPosition() const { return m_startPosition; }

    ScriptStreamer* streamer() const { return m_streamer.get(); }

private:
    String m_source;
    ResourcePtr<ScriptResource> m_resource;
    RefPtr<ScriptStreamer> m_streamer;
    mutable KURL m_url;
    TextPosition m_startPosition;
};

} // namespace blink

#endif // ScriptSourceCode_h