Gnash 0.8.9

builtin_function.h

Go to the documentation of this file.
00001 // 
00002 //   Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010,
00003 //   2011 Free Software Foundation, Inc
00004 // 
00005 // This program is free software; you can redistribute it and/or modify
00006 // it under the terms of the GNU General Public License as published by
00007 // the Free Software Foundation; either version 3 of the License, or
00008 // (at your option) any later version.
00009 // 
00010 // This program is distributed in the hope that it will be useful,
00011 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00012 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00013 // GNU General Public License for more details.
00014 // 
00015 // You should have received a copy of the GNU General Public License
00016 // along with this program; if not, write to the Free Software
00017 // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
00018 
00019 #ifndef GNASH_BUILTIN_FUNCTION_H
00020 #define GNASH_BUILTIN_FUNCTION_H
00021 
00022 #include "UserFunction.h" 
00023 #include "as_environment.h"
00024 #include "fn_call.h"
00025 
00026 #include <cassert>
00027 
00028 namespace gnash {
00029 
00030 
00032 //
00036 //
00039 class builtin_function : public UserFunction
00040 {
00041     typedef as_value (*ASFunction)(const fn_call& fn);
00042 
00043 public:
00044 
00046         //
00052         builtin_function(Global_as& gl, ASFunction func)
00053                 :
00054                 UserFunction(gl),
00055                 _func(func)
00056         {
00057         }
00058 
00060     //
00062     virtual boost::uint8_t registers() const {
00063         return 0;
00064     }
00065 
00067         virtual as_value call(const fn_call& fn)
00068         {
00069                 FrameGuard guard(getVM(fn), *this);
00070 
00071                 assert(_func);
00072                 return _func(fn);
00073         }
00074 
00075         bool isBuiltin()  { return true; }
00076 
00077 private:
00078 
00079         ASFunction _func;
00080 };
00081 
00082 } // end of gnash namespace
00083 
00084 #endif
00085