1 /* $NetBSD: gen_seq.c,v 1.2 2017/01/28 21:31:45 christos Exp $ */
2
3 /*
4 * Copyright (c) 1997 - 2006 Kungliga Tekniska Högskolan
5 * (Royal Institute of Technology, Stockholm, Sweden).
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 *
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * 3. Neither the name of the Institute nor the names of its contributors
20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 */
35
36 #include "gen_locl.h"
37
38 __RCSID("$NetBSD: gen_seq.c,v 1.2 2017/01/28 21:31:45 christos Exp $");
39
40 void
generate_type_seq(const Symbol * s)41 generate_type_seq (const Symbol *s)
42 {
43 char *subname;
44 Type *type;
45
46 if (!seq_type(s->name))
47 return;
48 type = s->type;
49 while(type->type == TTag)
50 type = type->subtype;
51
52 if (type->type != TSequenceOf && type->type != TSetOf) {
53 fprintf(stderr, "%s not seq of %d\n", s->name, (int)type->type);
54 return;
55 }
56
57 /*
58 * Require the subtype to be a type so we can name it and use
59 * copy_/free_
60 */
61
62 if (type->subtype->type != TType) {
63 fprintf(stderr, "%s subtype is not a type, can't generate "
64 "sequence code for this case: %d\n",
65 s->name, (int)type->subtype->type);
66 exit(1);
67 }
68
69 subname = type->subtype->symbol->gen_name;
70
71 fprintf (headerfile,
72 "ASN1EXP int ASN1CALL add_%s (%s *, const %s *);\n"
73 "ASN1EXP int ASN1CALL remove_%s (%s *, unsigned int);\n",
74 s->gen_name, s->gen_name, subname,
75 s->gen_name, s->gen_name);
76
77 fprintf (codefile, "int ASN1CALL\n"
78 "add_%s(%s *data, const %s *element)\n"
79 "{\n",
80 s->gen_name, s->gen_name, subname);
81
82 fprintf (codefile,
83 "int ret;\n"
84 "void *ptr;\n"
85 "\n"
86 "ptr = realloc(data->val, \n"
87 "\t(data->len + 1) * sizeof(data->val[0]));\n"
88 "if (ptr == NULL) return ENOMEM;\n"
89 "data->val = ptr;\n\n"
90 "ret = copy_%s(element, &data->val[data->len]);\n"
91 "if (ret) return ret;\n"
92 "data->len++;\n"
93 "return 0;\n",
94 subname);
95
96 fprintf (codefile, "}\n\n");
97
98 fprintf (codefile, "int ASN1CALL\n"
99 "remove_%s(%s *data, unsigned int element)\n"
100 "{\n",
101 s->gen_name, s->gen_name);
102
103 fprintf (codefile,
104 "void *ptr;\n"
105 "\n"
106 "if (data->len == 0 || element >= data->len)\n"
107 "\treturn ASN1_OVERRUN;\n"
108 "free_%s(&data->val[element]);\n"
109 "data->len--;\n"
110 /* don't move if its the last element */
111 "if (element < data->len)\n"
112 "\tmemmove(&data->val[element], &data->val[element + 1], \n"
113 "\t\tsizeof(data->val[0]) * (data->len - element));\n"
114 /* resize but don't care about failures since it doesn't matter */
115 "ptr = realloc(data->val, data->len * sizeof(data->val[0]));\n"
116 "if (ptr != NULL || data->len == 0) data->val = ptr;\n"
117 "return 0;\n",
118 subname);
119
120 fprintf (codefile, "}\n\n");
121 }
122