as_function.h

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// 
//   Copyright (C) 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
// 
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 3 of the License, or
// (at your option) any later version.
// 
// This program 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 General Public License for more details.
// 
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

#ifndef _GNASH_AS_FUNCTION_H_
#define _GNASH_AS_FUNCTION_H_

#ifdef HAVE_CONFIG_H
#include "gnashconfig.h"
#endif

#include "as_object.h" // for inheritance

// Forward declarations
namespace gnash {
        class fn_call;
        class builtin_function;
}

namespace gnash {

//
class as_function : public as_object
{
public:

        virtual ~as_function() {}

        // Avoid RTTI
        as_function* to_function() { return this; }

        virtual as_value operator()(const fn_call& fn)=0;

        as_value call(const fn_call& fn) { return operator()(fn); }

        // 
        boost::intrusive_ptr<as_object> constructInstance( as_environment& env,
                        unsigned nargs, unsigned first_arg_index);

        boost::intrusive_ptr<as_object> getPrototype();

        void extends(as_function& superclass);

        virtual bool isBuiltin()  { return false; }

        std::string get_text_value() const
        {
                return "[type Function]";
        }

        static boost::intrusive_ptr<builtin_function> getFunctionConstructor();

#ifdef GNASH_USE_GC
        //
        virtual void markReachableResources() const
        {
                markAsFunctionReachable();
        }
#endif // GNASH_USE_GC

protected:

#ifdef GNASH_USE_GC
        //
        void markAsFunctionReachable() const
        {
                //_properties->setReachable();

                markAsObjectReachable();
        }
#endif // GNASH_USE_GC

        //
        as_function();

        //
        as_function(as_object* iface);

        //
        //boost::intrusive_ptr<as_object>       _properties;

private:

        void setPrototype(as_object* proto);
};

void function_class_init(as_object& global);

// To be made statics instead
as_value function_apply(const fn_call& fn);
as_value function_call(const fn_call& fn);


} // end of gnash namespace

// _GNASH_AS_FUNCTION_H_
#endif

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