Return to gen_free.c CVS log

Up to [local] / src / usr.bin / asn1_compile

Annotation of src/usr.bin/asn1_compile/gen_free.c, Revision 1.2

1.1       hin         1: /*
1.2     ! biorn       2:  * Copyright (c) 1997 - 2003 Kungliga Tekniska Högskolan
1.1       hin         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: /*
1.2     ! biorn      37: RCSID("$KTH: gen_free.c,v 1.12 2003/10/03 00:28:08 lha Exp $");
1.1       hin        38: */
                     39:
                     40: static void
                     41: free_primitive (const char *typename, const char *name)
                     42: {
                     43:     fprintf (codefile, "free_%s(%s);\n", typename, name);
                     44: }
                     45:
                     46: static void
                     47: free_type (const char *name, const Type *t)
                     48: {
                     49:   switch (t->type) {
                     50:   case TType:
                     51: #if 0
                     52:       free_type (name, t->symbol->type);
                     53: #endif
                     54:       fprintf (codefile, "free_%s(%s);\n", t->symbol->gen_name, name);
                     55:       break;
                     56:   case TInteger:
                     57:   case TUInteger:
1.2     ! biorn      58:   case TBoolean:
1.1       hin        59:   case TEnumerated :
                     60:       break;
                     61:   case TOctetString:
                     62:       free_primitive ("octet_string", name);
                     63:       break;
                     64:   case TOID :
                     65:       free_primitive ("oid", name);
                     66:       break;
                     67:   case TBitString: {
                     68:       break;
                     69:   }
                     70:   case TSequence: {
                     71:       Member *m;
                     72:       int tag = -1;
                     73:
                     74:       if (t->members == NULL)
                     75:          break;
                     76:
                     77:       for (m = t->members; m && tag != m->val; m = m->next) {
                     78:          char *s;
                     79:
                     80:          asprintf (&s, "%s(%s)->%s",
                     81:                    m->optional ? "" : "&", name, m->gen_name);
                     82:          if(m->optional)
                     83:              fprintf(codefile, "if(%s) {\n", s);
                     84:          free_type (s, m->type);
                     85:          if(m->optional)
                     86:              fprintf(codefile,
                     87:                      "free(%s);\n"
1.2     ! biorn      88:                      "%s = NULL;\n"
        !            89:                      "}\n", s, s);
1.1       hin        90:          if (tag == -1)
                     91:              tag = m->val;
                     92:          free (s);
                     93:       }
                     94:       break;
                     95:   }
                     96:   case TSequenceOf: {
                     97:       char *n;
                     98:
                     99:       fprintf (codefile, "while((%s)->len){\n", name);
                    100:       asprintf (&n, "&(%s)->val[(%s)->len-1]", name, name);
                    101:       free_type(n, t->subtype);
                    102:       fprintf(codefile,
                    103:              "(%s)->len--;\n"
                    104:              "}\n",
                    105:              name);
                    106:       fprintf(codefile,
1.2     ! biorn     107:              "free((%s)->val);\n"
        !           108:              "(%s)->val = NULL;\n", name, name);
1.1       hin       109:       free(n);
                    110:       break;
                    111:   }
                    112:   case TGeneralizedTime:
                    113:       break;
                    114:   case TGeneralString:
                    115:       free_primitive ("general_string", name);
1.2     ! biorn     116:       break;
        !           117:   case TUTF8String:
        !           118:       free_primitive ("utf8string", name);
        !           119:       break;
        !           120:   case TNull:
1.1       hin       121:       break;
                    122:   case TApplication:
                    123:       free_type (name, t->subtype);
                    124:       break;
                    125:   default :
                    126:       abort ();
                    127:   }
                    128: }
                    129:
                    130: void
                    131: generate_type_free (const Symbol *s)
                    132: {
                    133:   fprintf (headerfile,
                    134:           "void   free_%s  (%s *);\n",
                    135:           s->gen_name, s->gen_name);
                    136:
                    137:   fprintf (codefile, "void\n"
                    138:           "free_%s(%s *data)\n"
                    139:           "{\n",
                    140:           s->gen_name, s->gen_name);
                    141:
                    142:   free_type ("data", s->type);
                    143:   fprintf (codefile, "}\n\n");
                    144: }
                    145: