00001 // 00002 // aegis - project change supervisor 00003 // Copyright (C) 1994, 2002-2008 Peter Miller. 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, see 00017 // <http://www.gnu.org/licenses/>. 00018 // 00019 00020 #ifndef AEGIS_AER_FUNC_H 00021 #define AEGIS_AER_FUNC_H 00022 00023 #include <common/ac/shared_ptr.h> 00024 #include <common/ac/stddef.h> 00025 00026 #include <common/symtab/template.h> 00027 #include <libaegis/aer/expr.h> 00028 #include <libaegis/aer/value.h> 00029 00030 00035 class rpt_func 00036 { 00037 public: 00038 typedef aegis_shared_ptr<rpt_func> pointer; 00039 00043 virtual ~rpt_func(); 00044 00045 protected: 00049 rpt_func(); 00050 00051 public: 00055 virtual const char *name() const = 0; 00056 00061 virtual bool optimizable() const = 0; 00062 00070 virtual bool verify(const rpt_expr::pointer &ep) const = 0; 00071 00079 virtual rpt_value::pointer run(const rpt_expr::pointer &ep, size_t argc, 00080 rpt_value::pointer *argv) const = 0; 00081 00086 static void init(symtab<rpt_value::pointer> &); 00087 }; 00088 00089 #endif // AEGIS_AER_FUNC_H
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