/*

 * Copyright (c) 2008, 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

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

 */

#ifndef ScriptCallStack_h

#define ScriptCallStack_h

#include "ScriptArray.h"

#include "ScriptCallFrame.h"

#include "ScriptState.h"

#include "ScriptString.h"

#include <wtf/Noncopyable.h>

#include <wtf/RefPtr.h>

namespace JSC {

    class ExecState;

    class JSValue;

}

namespace WebCore {

    class InspectorArray;

    class ScriptCallStack : public Noncopyable {

    public:

        ScriptCallStack(JSC::ExecState*, unsigned skipArgumentCount = 0);

        ~ScriptCallStack();

        ScriptState* state() const { return m_exec; }

        ScriptState* globalState() const { return m_exec->lexicalGlobalObject()->globalExec(); }

        // frame retrieval methods

        const ScriptCallFrame &at(unsigned);

        unsigned size();

        static bool stackTrace(int, const RefPtr<InspectorArray>&);

    private:

        void initialize();

        bool m_initialized;

        JSC::ExecState* m_exec;

        Vector<ScriptCallFrame> m_frames;

        JSC::JSFunction* m_caller;

    };

} // namespace WebCore

#endif // ScriptCallStack_h