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- // -*- C++ -*-
- /* Copyright (C) 1989, 1990, 1991, 1992 Free Software Foundation, Inc.
- Written by James Clark (jjc@jclark.com)
-
- This file is part of groff.
-
- groff is free software; you can redistribute it and/or modify it under
- the terms of the GNU General Public License as published by the Free
- Software Foundation; either version 2, or (at your option) any later
- version.
-
- groff is distributed in the hope that it will be useful, but WITHOUT ANY
- WARRANTY; without even the implied warranty of MERCHANTABILITY or
- FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
- for more details.
-
- You should have received a copy of the GNU General Public License along
- with groff; see the file COPYING. If not, write to the Free Software
- Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
-
-
-
- // there is no distinction between name with no value and name with NULL value
- // null names are not permitted (they will be ignored).
-
- struct association {
- symbol s;
- void *v;
- association() : v(0) {}
- };
-
- class dictionary;
-
- class dictionary_iterator {
- dictionary *dict;
- int i;
- public:
- dictionary_iterator(dictionary &);
- int get(symbol *, void **);
- };
-
- class dictionary {
- int size;
- int used;
- double threshold;
- double factor;
- association *table;
- void rehash(int);
- public:
- dictionary(int);
- void *lookup(symbol s, void *v=0); // returns value associated with key
- void *lookup(const char *);
- // if second parameter not NULL, value will be replaced
- void *remove(symbol);
- friend class dictionary_iterator;
- };
-
- class object {
- int rcount;
- public:
- object();
- virtual ~object();
- void add_reference();
- void remove_reference();
- };
-
- class object_dictionary;
-
- class object_dictionary_iterator {
- dictionary_iterator di;
- public:
- object_dictionary_iterator(object_dictionary &);
- int get(symbol *, object **);
- };
-
- class object_dictionary {
- dictionary d;
- public:
- object_dictionary(int);
- object *lookup(symbol nm);
- void define(symbol nm, object *obj);
- void rename(symbol oldnm, symbol newnm);
- void remove(symbol nm);
- int alias(symbol newnm, symbol oldnm);
- friend class object_dictionary_iterator;
- };
-
-
- inline int object_dictionary_iterator::get(symbol *sp, object **op)
- {
- return di.get(sp, (void **)op);
- }
-