builtin_function.h

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// 
//   Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
//   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_BUILTIN_FUNCTION_H
#define GNASH_BUILTIN_FUNCTION_H

#include "UserFunction.h" 

#include <cassert>

namespace gnash {
    class fn_call;
}

namespace gnash {


//
//
class builtin_function : public UserFunction
{
    typedef as_value (*ASFunction)(const fn_call& fn);

public:

        //
        builtin_function(Global_as& gl, ASFunction func)
                :
                UserFunction(gl),
                _func(func)
        {
        }

    //
    virtual std::uint8_t registers() const {
        return 0;
    }

        virtual as_value call(const fn_call& fn)
        {
                FrameGuard guard(getVM(fn), *this);

                assert(_func);
                return _func(fn);
        }

        bool isBuiltin()  { return true; }

private:

        ASFunction _func;
};

} // end of gnash namespace

#endif