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Annotation of freem/src/consttbl.c, revision 1.3

1.1       snw         1: /*
1.3     ! snw         2:  *   $Id$
1.1       snw         3:  *    support for local constants
                      4:  *
                      5:  *  
1.2       snw         6:  *   Author: Serena Willis <snw@coherent-logic.com>
1.1       snw         7:  *    Copyright (C) 1998 MUG Deutschland
1.3     ! snw         8:  *    Copyright (C) 2021, 2025 Coherent Logic Development LLC
1.1       snw         9:  *
                     10:  *
                     11:  *   This file is part of FreeM.
                     12:  *
                     13:  *   FreeM is free software: you can redistribute it and/or modify
                     14:  *   it under the terms of the GNU Affero Public License as published by
                     15:  *   the Free Software Foundation, either version 3 of the License, or
                     16:  *   (at your option) any later version.
                     17:  *
                     18:  *   FreeM is distributed in the hope that it will be useful,
                     19:  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
                     20:  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
                     21:  *   GNU Affero Public License for more details.
                     22:  *
                     23:  *   You should have received a copy of the GNU Affero Public License
                     24:  *   along with FreeM.  If not, see <https://www.gnu.org/licenses/>.
                     25:  *
1.3     ! snw        26:  *   $Log$
        !            27:  *
        !            28:  * SPDX-FileCopyrightText:  (C) 2025 Coherent Logic Development LLC
        !            29:  * SPDX-License-Identifier: AGPL-3.0-or-later 
1.1       snw        30:  **/
                     31: 
                     32: #include <stdlib.h>
                     33: #include "mpsdef.h"
                     34: #include "consttbl.h"
                     35: 
                     36: ll_constant *const_head;
                     37: 
                     38: short const_define(char *key, char *data)
                     39: {
                     40:     
                     41:     ll_constant *t;    
                     42:     
                     43:     for (t = const_head; t != NULL; t = t->next) {
                     44: 
                     45:        if (stcmp (t->key, key) == 0) {
                     46:            return 0;
                     47:        }
                     48: 
                     49:     }
                     50: 
                     51:     t = (ll_constant *) malloc (sizeof (ll_constant));
                     52:     NULLPTRCHK(t,"const_define");
                     53: 
                     54:     t->key = (char *) malloc (stlen (key) + 1);
                     55:     NULLPTRCHK(t->key,"const_define");
                     56: 
                     57:     t->data = (char *) malloc (stlen (data) + 1);
                     58:     NULLPTRCHK(t->data,"const_define");
                     59:     
                     60:     stcpy (t->key, key);
                     61:     stcpy (t->data, data);
                     62:     t->next = const_head;
                     63:     const_head = t;
                     64: 
                     65:     return stlen(t->key);
                     66: 
                     67: }
                     68: 
                     69: short const_is_defined(char *key)
                     70: {
                     71:     ll_constant *t;
                     72: 
                     73:     for (t = const_head; t != NULL; t = t->next) if (stcmp (t->key, key) == 0) return 1;       
                     74: 
                     75:     return 0;
                     76:        
                     77: }
                     78: 
                     79: void const_restore(void)
                     80: {
                     81:     ll_constant *t;
                     82: 
                     83:     restoring_consts = TRUE;
                     84:     
                     85:     for (t = const_head; t != NULL; t = t->next) {
                     86:         symtab (set_sym, t->key, t->data);        
                     87:     }
                     88: 
                     89:     restoring_consts = FALSE;
                     90:     
                     91:     return;
                     92: }