2 /* Copyright (C) 1989, 1990, 1991, 1992, 2009
3 Free Software Foundation, Inc.
4 Written by James Clark (jjc@jclark.com)
6 This file is part of groff.
8 groff is free software; you can redistribute it and/or modify it under
9 the terms of the GNU General Public License as published by the Free
10 Software Foundation, either version 3 of the License, or
11 (at your option) any later version.
13 groff is distributed in the hope that it will be useful, but WITHOUT ANY
14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>. */
23 // there is no distinction between name with no value and name with NULL value
24 // null names are not permitted (they will be ignored).
29 association() : v(0) {}
34 class dictionary_iterator {
38 dictionary_iterator(dictionary &);
39 int get(symbol *, void **);
51 void *lookup(symbol s, void *v=0); // returns value associated with key
52 void *lookup(const char *);
53 // if second parameter not NULL, value will be replaced
55 friend class dictionary_iterator;
64 void remove_reference();
67 class object_dictionary;
69 class object_dictionary_iterator {
70 dictionary_iterator di;
72 object_dictionary_iterator(object_dictionary &);
73 int get(symbol *, object **);
76 class object_dictionary {
79 object_dictionary(int);
80 object *lookup(symbol nm);
81 void define(symbol nm, object *obj);
82 void rename(symbol oldnm, symbol newnm);
83 void remove(symbol nm);
84 int alias(symbol newnm, symbol oldnm);
85 friend class object_dictionary_iterator;
89 inline int object_dictionary_iterator::get(symbol *sp, object **op)
91 return di.get(sp, (void **)op);