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