- Derivatives are now assembled in a slightly different manner (i.e. they
[ginac.git] / ginac / registrar.cpp
1 /** @file registrar.cpp
2  *
3  *  GiNaC's class registrar (for class basic and all classes derived from it). */
4
5 /*
6  *  GiNaC Copyright (C) 1999-2000 Johannes Gutenberg University Mainz, Germany
7  *
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.
12  *
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.
17  *
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
21  */
22
23 #include <string>
24 #include <stdexcept>
25
26 #include "registrar.h"
27
28 #ifndef NO_NAMESPACE_GINAC
29 namespace GiNaC {
30 #endif // ndef NO_NAMESPACE_GINAC
31
32 registered_class_info *first_registered_class = NULL;
33
34 /** Find registered_class_info strucure by class name. */
35 static inline registered_class_info *find_registered_class_info(const std::string &class_name)
36 {
37         registered_class_info *p = first_registered_class;
38         while (p) {
39                 if (class_name == p->name)
40                         return p;
41                 p = p->next;
42         }
43         throw (std::runtime_error("class '" + class_name + "' not registered"));
44 }
45
46 unsigned int find_tinfo_key(const std::string &class_name)
47 {
48         registered_class_info *p = find_registered_class_info(class_name);
49         return p->tinfo_key;
50 }
51
52 unarch_func find_unarch_func(const std::string &class_name)
53 {
54         registered_class_info *p = find_registered_class_info(class_name);
55         return p->unarchive;
56 }
57
58
59 #ifndef NO_NAMESPACE_GINAC
60 } // namespace GiNaC
61 #endif // ndef NO_NAMESPACE_GINAC