1 // 2 // aegis - project change supervisor 3 // Copyright (C) 1994, 1996, 2002, 2005-2008 Peter Miller 4 // 5 // This program is free software; you can redistribute it and/or modify 6 // it under the terms of the GNU General Public License as published by 7 // the Free Software Foundation; either version 3 of the License, or 8 // (at your option) any later version. 9 // 10 // This program is distributed in the hope that it will be useful, 11 // but WITHOUT ANY WARRANTY; without even the implied warranty of 12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 // GNU General Public License for more details. 14 // 15 // You should have received a copy of the GNU General Public License 16 // along with this program. If not, see 17 // <http://www.gnu.org/licenses/>. 18 // 19 20 #ifndef AEGIS_AER_VALUE_REAL_H 21 #define AEGIS_AER_VALUE_REAL_H 22 23 #include <libaegis/aer/value.h> 24 25 /** 26 * The rpt_value_real class is used to represent a value which is a 27 * floating point value (at least 64 bits). 28 */ 29 class rpt_value_real: 30 public rpt_value 31 { 32 public: 33 /** 34 * The destructor. 35 */ 36 virtual ~rpt_value_real(); 37 38 private: 39 /** 40 * The constructor. It is private on purpose, use the "create" 41 * class method nstead. 42 */ 43 rpt_value_real(double value); 44 45 public: 46 /** 47 * The create class method is used to create new dynamically 48 * allocated instances of this class. 49 */ 50 static rpt_value::pointer create(double value); 51 52 /** 53 * The query method may be used to obtain the value of this class. 54 */ 55 double query() const; 56 57 protected: 58 // See base class for documentation. 59 rpt_value::pointer integerize_or_null() const; 60 61 // See base class for documentation. 62 rpt_value::pointer stringize_or_null() const; 63 64 // See base class for documentation. 65 rpt_value::pointer booleanize_or_null() const; 66 67 // See base class for documentation. 68 const char *name() const; 69 70 private: 71 /** 72 * The value instance variable is used to remember the value of 73 * this object. 74 */ 75 double value; 76 77 /** 78 * The default constructor. Do not use. 79 */ 80 rpt_value_real(); 81 82 /** 83 * The copy constructor. Do not use. 84 */ 85 rpt_value_real(const rpt_value_real &); 86 87 /** 88 * The assignment operator. Do not use. 89 */ 90 rpt_value_real &operator=(const rpt_value_real &); 91 }; 92 93 #endif // AEGIS_AER_VALUE_REAL_H 94