1 /* 2 * Copyright (c) 1997 - 2003 Kungliga Tekniska H�gskolan 3 * (Royal Institute of Technology, Stockholm, Sweden). 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * 3. Neither the name of the Institute nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #include "gen_locl.h" 35 36 RCSID("$Id: gen_free.c,v 1.9.6.1 2003/08/20 16:25:01 joda Exp $"); 37 38 static void 39 free_primitive (const char *typename, const char *name) 40 { 41 fprintf (codefile, "free_%s(%s);\n", typename, name); 42 } 43 44 static void 45 free_type (const char *name, const Type *t) 46 { 47 switch (t->type) { 48 case TType: 49 #if 0 50 free_type (name, t->symbol->type); 51 #endif 52 fprintf (codefile, "free_%s(%s);\n", t->symbol->gen_name, name); 53 break; 54 case TInteger: 55 case TUInteger: 56 case TEnumerated : 57 break; 58 case TOctetString: 59 free_primitive ("octet_string", name); 60 break; 61 case TOID : 62 free_primitive ("oid", name); 63 break; 64 case TBitString: { 65 break; 66 } 67 case TSequence: { 68 Member *m; 69 int tag = -1; 70 71 if (t->members == NULL) 72 break; 73 74 for (m = t->members; m && tag != m->val; m = m->next) { 75 char *s; 76 77 asprintf (&s, "%s(%s)->%s", 78 m->optional ? "" : "&", name, m->gen_name); 79 if(m->optional) 80 fprintf(codefile, "if(%s) {\n", s); 81 free_type (s, m->type); 82 if(m->optional) 83 fprintf(codefile, 84 "free(%s);\n" 85 "%s = NULL;\n" 86 "}\n", s, s); 87 if (tag == -1) 88 tag = m->val; 89 free (s); 90 } 91 break; 92 } 93 case TSequenceOf: { 94 char *n; 95 96 fprintf (codefile, "while((%s)->len){\n", name); 97 asprintf (&n, "&(%s)->val[(%s)->len-1]", name, name); 98 free_type(n, t->subtype); 99 fprintf(codefile, 100 "(%s)->len--;\n" 101 "}\n", 102 name); 103 fprintf(codefile, 104 "free((%s)->val);\n" 105 "(%s)->val = NULL;\n", name, name); 106 free(n); 107 break; 108 } 109 case TGeneralizedTime: 110 break; 111 case TGeneralString: 112 free_primitive ("general_string", name); 113 break; 114 case TApplication: 115 free_type (name, t->subtype); 116 break; 117 default : 118 abort (); 119 } 120 } 121 122 void 123 generate_type_free (const Symbol *s) 124 { 125 fprintf (headerfile, 126 "void free_%s (%s *);\n", 127 s->gen_name, s->gen_name); 128 129 fprintf (codefile, "void\n" 130 "free_%s(%s *data)\n" 131 "{\n", 132 s->gen_name, s->gen_name); 133 134 free_type ("data", s->type); 135 fprintf (codefile, "}\n\n"); 136 } 137 138