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Annotation of freem/src/consttbl.c, revision 1.1.1.1

1.1       snw         1: /*
                      2:  *                            *
                      3:  *                           * *
                      4:  *                          *   *
                      5:  *                     ***************
                      6:  *                      * *       * *
                      7:  *                       *  MUMPS  *
                      8:  *                      * *       * *
                      9:  *                     ***************
                     10:  *                          *   *
                     11:  *                           * *
                     12:  *                            *
                     13:  *
                     14:  *   consttbl.c
                     15:  *    support for local constants
                     16:  *
                     17:  *  
                     18:  *   Author: Serena Willis <jpw@coherent-logic.com>
                     19:  *    Copyright (C) 1998 MUG Deutschland
                     20:  *    Copyright (C) 2021 Coherent Logic Development LLC
                     21:  *
                     22:  *
                     23:  *   This file is part of FreeM.
                     24:  *
                     25:  *   FreeM is free software: you can redistribute it and/or modify
                     26:  *   it under the terms of the GNU Affero Public License as published by
                     27:  *   the Free Software Foundation, either version 3 of the License, or
                     28:  *   (at your option) any later version.
                     29:  *
                     30:  *   FreeM is distributed in the hope that it will be useful,
                     31:  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
                     32:  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
                     33:  *   GNU Affero Public License for more details.
                     34:  *
                     35:  *   You should have received a copy of the GNU Affero Public License
                     36:  *   along with FreeM.  If not, see <https://www.gnu.org/licenses/>.
                     37:  *
                     38:  **/
                     39: 
                     40: #include <stdlib.h>
                     41: #include "mpsdef.h"
                     42: #include "consttbl.h"
                     43: 
                     44: ll_constant *const_head;
                     45: 
                     46: short const_define(char *key, char *data)
                     47: {
                     48:     
                     49:     ll_constant *t;    
                     50:     
                     51:     for (t = const_head; t != NULL; t = t->next) {
                     52: 
                     53:        if (stcmp (t->key, key) == 0) {
                     54:            return 0;
                     55:        }
                     56: 
                     57:     }
                     58: 
                     59:     t = (ll_constant *) malloc (sizeof (ll_constant));
                     60:     NULLPTRCHK(t,"const_define");
                     61: 
                     62:     t->key = (char *) malloc (stlen (key) + 1);
                     63:     NULLPTRCHK(t->key,"const_define");
                     64: 
                     65:     t->data = (char *) malloc (stlen (data) + 1);
                     66:     NULLPTRCHK(t->data,"const_define");
                     67:     
                     68:     stcpy (t->key, key);
                     69:     stcpy (t->data, data);
                     70:     t->next = const_head;
                     71:     const_head = t;
                     72: 
                     73:     return stlen(t->key);
                     74: 
                     75: }
                     76: 
                     77: short const_is_defined(char *key)
                     78: {
                     79:     ll_constant *t;
                     80: 
                     81:     for (t = const_head; t != NULL; t = t->next) if (stcmp (t->key, key) == 0) return 1;       
                     82: 
                     83:     return 0;
                     84:        
                     85: }
                     86: 
                     87: void const_restore(void)
                     88: {
                     89:     ll_constant *t;
                     90: 
                     91:     restoring_consts = TRUE;
                     92:     
                     93:     for (t = const_head; t != NULL; t = t->next) {
                     94:         symtab (set_sym, t->key, t->data);        
                     95:     }
                     96: 
                     97:     restoring_consts = FALSE;
                     98:     
                     99:     return;
                    100: }