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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, 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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);
}
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