152 lines
4.5 KiB
C
152 lines
4.5 KiB
C
/*
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* Copyright (c) 1997 - 2000 Kungliga Tekniska Högskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include "gen_locl.h"
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RCSID("$Id: gen_copy.c,v 1.12 2001/09/25 13:39:26 assar Exp $");
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static void
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copy_primitive (const char *typename, const char *from, const char *to)
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{
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fprintf (codefile, "if(copy_%s(%s, %s)) return ENOMEM;\n",
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typename, from, to);
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}
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static void
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copy_type (const char *from, const char *to, const Type *t)
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{
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switch (t->type) {
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case TType:
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#if 0
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copy_type (from, to, t->symbol->type);
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#endif
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fprintf (codefile, "if(copy_%s(%s, %s)) return ENOMEM;\n",
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t->symbol->gen_name, from, to);
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break;
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case TInteger:
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case TUInteger:
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case TEnumerated :
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fprintf(codefile, "*(%s) = *(%s);\n", to, from);
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break;
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case TOctetString:
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copy_primitive ("octet_string", from, to);
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break;
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case TOID:
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copy_primitive ("oid", from, to);
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break;
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case TBitString: {
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fprintf(codefile, "*(%s) = *(%s);\n", to, from);
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break;
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}
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case TSequence: {
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Member *m;
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int tag = -1;
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if (t->members == NULL)
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break;
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for (m = t->members; m && tag != m->val; m = m->next) {
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char *f;
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char *t;
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asprintf (&f, "%s(%s)->%s",
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m->optional ? "" : "&", from, m->gen_name);
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asprintf (&t, "%s(%s)->%s",
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m->optional ? "" : "&", to, m->gen_name);
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if(m->optional){
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fprintf(codefile, "if(%s) {\n", f);
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fprintf(codefile, "%s = malloc(sizeof(*%s));\n", t, t);
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fprintf(codefile, "if(%s == NULL) return ENOMEM;\n", t);
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}
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copy_type (f, t, m->type);
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if(m->optional){
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fprintf(codefile, "}else\n");
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fprintf(codefile, "%s = NULL;\n", t);
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}
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if (tag == -1)
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tag = m->val;
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free (f);
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free (t);
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}
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break;
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}
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case TSequenceOf: {
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char *f;
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char *T;
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fprintf (codefile, "if(((%s)->val = "
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"malloc((%s)->len * sizeof(*(%s)->val))) == NULL && (%s)->len != 0)\n",
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to, from, to, from);
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fprintf (codefile, "return ENOMEM;\n");
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fprintf(codefile,
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"for((%s)->len = 0; (%s)->len < (%s)->len; (%s)->len++){\n",
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to, to, from, to);
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asprintf(&f, "&(%s)->val[(%s)->len]", from, to);
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asprintf(&T, "&(%s)->val[(%s)->len]", to, to);
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copy_type(f, T, t->subtype);
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fprintf(codefile, "}\n");
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free(f);
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free(T);
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break;
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}
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case TGeneralizedTime:
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fprintf(codefile, "*(%s) = *(%s);\n", to, from);
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break;
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case TGeneralString:
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copy_primitive ("general_string", from, to);
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break;
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case TApplication:
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copy_type (from, to, t->subtype);
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break;
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default :
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abort ();
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}
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}
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void
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generate_type_copy (const Symbol *s)
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{
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fprintf (headerfile,
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"int copy_%s (const %s *, %s *);\n",
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s->gen_name, s->gen_name, s->gen_name);
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fprintf (codefile, "int\n"
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"copy_%s(const %s *from, %s *to)\n"
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"{\n",
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s->gen_name, s->gen_name, s->gen_name);
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copy_type ("from", "to", s->type);
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fprintf (codefile, "return 0;\n}\n\n");
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}
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