00001 // 00002 // aegis - project change supervisor 00003 // Copyright (C) 1994, 2002, 2005-2008 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_EXPR_LOOKUP_H 00021 #define AEGIS_AER_EXPR_LOOKUP_H 00022 00023 #include <common/nstring.h> 00024 #include <libaegis/aer/expr.h> 00025 00030 class rpt_expr_lookup: 00031 public rpt_expr 00032 { 00033 public: 00037 virtual ~rpt_expr_lookup(); 00038 00039 private: 00049 rpt_expr_lookup(const rpt_expr::pointer &lhs, const rpt_expr::pointer &rhs); 00050 00051 public: 00061 static rpt_expr::pointer create(const rpt_expr::pointer &lhs, 00062 const rpt_expr::pointer &rhs); 00063 00073 static rpt_expr::pointer create(const rpt_expr::pointer &lhs, 00074 const nstring &rhs); 00075 00076 protected: 00077 // See base class for documentation. 00078 bool lvalue() const; 00079 00080 // See base class for documentation. 00081 rpt_value::pointer evaluate() const; 00082 00083 private: 00087 rpt_expr_lookup(); 00088 00092 rpt_expr_lookup(const rpt_expr_lookup &); 00093 00097 rpt_expr_lookup &operator=(const rpt_expr_lookup &); 00098 }; 00099 00100 #endif // AEGIS_AER_EXPR_LOOKUP_H
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