/* Copyright (C) 1989, 1990 Free Software Foundation, Inc.
Written by James Clark (jjc@jclark.uucp)
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 1, or (at your option) any later
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
You should have received a copy of the GNU General Public License along
with groff; see the file LICENSE. 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).
class dictionary_iterator
{
dictionary_iterator(dictionary
&);
int get(symbol
*, void **);
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
friend class dictionary_iterator
;
class object_dictionary_iterator
{
object_dictionary_iterator(object_dictionary
&);
int get(symbol
*, object
**);
class object_dictionary
{
object
*lookup(symbol nm
);
void define(symbol nm
, object
*obj
);
void rename(symbol oldnm
, symbol newnm
);
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
);