| /* Copyright (C) 1989, 1990 Aladdin Enterprises. All rights reserved. |
| Distributed by Free Software Foundation, Inc. |
| |
| This file is part of Ghostscript. |
| |
| Ghostscript is distributed in the hope that it will be useful, but |
| WITHOUT ANY WARRANTY. No author or distributor accepts responsibility |
| to anyone for the consequences of using it or for whether it serves any |
| particular purpose or works at all, unless he says so in writing. Refer |
| to the Ghostscript General Public License for full details. |
| |
| Everyone is granted permission to copy, modify and redistribute |
| Ghostscript, but only under the conditions described in the Ghostscript |
| General Public License. A copy of this license is supposed to have been |
| given to you along with Ghostscript so you can know your rights and |
| responsibilities. It should be in a file named COPYING. Among other |
| things, the copyright notice and this notice must be preserved on all |
| copies. */ |
| |
| /* dict.h */ |
| /* Interfaces for GhostScript dictionary package */ |
| |
| /* Define the maximum size of a dictionary */ |
| extern uint dict_max_size; |
| |
| /* Create a dictionary */ |
| extern int dict_create(P2(uint maxlength, ref *dict)); |
| |
| /* Return a pointer to a ref that holds the access attributes */ |
| /* for a dictionary. */ |
| extern ref *dict_access_ref(P1(ref *dict)); |
| #define check_dict_read(dict) check_read(*dict_access_ref(&dict)) |
| #define check_dict_write(dict) check_write(*dict_access_ref(&dict)) |
| |
| /* Look up in a stack of dictionaries. Store a pointer to the value slot */ |
| /* where found, or to the (value) slot for inserting. */ |
| /* Return 1 if found, 0 if not and there is room for a new entry, */ |
| /* or e_dictfull if the dictionary is full and the key is missing. */ |
| /* The caller is responsible for ensuring key is not a null. */ |
| /* Note that pdbot <= pdtop, and the search starts at pdtop. */ |
| extern int dict_lookup(P4(ref *pdbot, ref *pdtop, ref *key, ref **ppvalue)); |
| /* Look up in just one dictionary. */ |
| #define dict_find(dict,key,ppvalue) dict_lookup(dict,dict,key,ppvalue) |
| |
| /* Enter a key-value pair in a dictionary. */ |
| /* Return 0 or e_dictfull. */ |
| extern int dict_put(P3(ref *dict, ref *key, ref *pvalue)); |
| |
| /* Return the number of elements in a dictionary. */ |
| extern uint dict_length(P1(ref *dict)); |
| |
| /* Return the capacity of a dictionary. */ |
| extern uint dict_maxlength(P1(ref *dict)); |
| |
| /* Copy one dictionary into another. */ |
| /* Return 0 or e_dictfull. */ |
| extern int dict_copy(P2(ref *dfrom, ref *dto)); |
| |
| /* Grow or shrink a dictionary. */ |
| /* Return 0 or e_dictfull. */ |
| extern int dict_resize(P2(ref *dict, uint newmaxlength)); |
| |
| /* Prepare to enumerate a dictionary. */ |
| /* Return an integer suitable for the first call to dict_next. */ |
| extern int dict_first(P1(ref *dict)); |
| |
| /* Enumerate the next element of a dictionary. */ |
| /* index is initially the result of a call on dict_first. */ |
| /* Either store a key and value at eltp[0] and eltp[1] */ |
| /* and return an updated index, or return -1 */ |
| /* to signal that there are no more elements in the dictionary. */ |
| extern int dict_next(P3(ref *dict, int index, ref *eltp)); |
