3 * Interface to class signaling failure of operation. Considered obsolete all
4 * this stuff ought to be replaced by exceptions. */
7 * GiNaC Copyright (C) 1999-2000 Johannes Gutenberg University Mainz, Germany
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24 #ifndef __GINAC_FAIL_H__
25 #define __GINAC_FAIL_H__
27 #include <ginac/basic.h>
29 #ifndef NO_GINAC_NAMESPACE
31 #endif // ndef NO_GINAC_NAMESPACE
33 class fail : public basic
35 GINAC_DECLARE_REGISTERED_CLASS(fail, basic)
37 // default constructor, destructor, copy constructor assignment operator and helpers
41 fail(const fail & other);
42 const fail & operator=(const fail & other);
44 void copy(const fail & other);
45 void destroy(bool call_parent);
50 // functions overriding virtual functions from bases classes
52 basic * duplicate() const;
53 void print(ostream & os, unsigned upper_precedence=0) const;
54 void printraw(ostream & os) const;
56 int compare_same_type(const basic & other) const;
57 unsigned return_type(void) const { return return_types::noncommutative_composite; };
59 // new virtual functions which can be overridden by derived classes
62 // non-virtual functions in this class
71 extern const fail some_fail;
72 extern const type_info & typeid_fail;
74 #ifndef NO_GINAC_NAMESPACE
76 #endif // ndef NO_GINAC_NAMESPACE
78 #endif // ndef __GINAC_FAIL_H__