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Annotation of src/usr.bin/asn1_compile/gen_free.c, Revision 1.1

1.1     ! hin         1: /*
        !             2:  * Copyright (c) 1997 - 2000 Kungliga Tekniska Högskolan
        !             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: /*
        !            37: RCSID("$KTH: gen_free.c,v 1.9 2001/09/25 13:39:26 assar Exp $");
        !            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:
        !            58:   case TEnumerated :
        !            59:       break;
        !            60:   case TOctetString:
        !            61:       free_primitive ("octet_string", name);
        !            62:       break;
        !            63:   case TOID :
        !            64:       free_primitive ("oid", name);
        !            65:       break;
        !            66:   case TBitString: {
        !            67:       break;
        !            68:   }
        !            69:   case TSequence: {
        !            70:       Member *m;
        !            71:       int tag = -1;
        !            72:
        !            73:       if (t->members == NULL)
        !            74:          break;
        !            75:
        !            76:       for (m = t->members; m && tag != m->val; m = m->next) {
        !            77:          char *s;
        !            78:
        !            79:          asprintf (&s, "%s(%s)->%s",
        !            80:                    m->optional ? "" : "&", name, m->gen_name);
        !            81:          if(m->optional)
        !            82:              fprintf(codefile, "if(%s) {\n", s);
        !            83:          free_type (s, m->type);
        !            84:          if(m->optional)
        !            85:              fprintf(codefile,
        !            86:                      "free(%s);\n"
        !            87:                      "}\n",s);
        !            88:          if (tag == -1)
        !            89:              tag = m->val;
        !            90:          free (s);
        !            91:       }
        !            92:       break;
        !            93:   }
        !            94:   case TSequenceOf: {
        !            95:       char *n;
        !            96:
        !            97:       fprintf (codefile, "while((%s)->len){\n", name);
        !            98:       asprintf (&n, "&(%s)->val[(%s)->len-1]", name, name);
        !            99:       free_type(n, t->subtype);
        !           100:       fprintf(codefile,
        !           101:              "(%s)->len--;\n"
        !           102:              "}\n",
        !           103:              name);
        !           104:       fprintf(codefile,
        !           105:              "free((%s)->val);\n", 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: