+++ /dev/null
-#include "asn1fix_internal.h"
-#include <asn1_namespace.h>
-
-#define ADD_TAG(skip, newtag) do { \
- void *__p; \
- if(skip && !(flags & AFT_FULL_COLLECT)) { \
- if(newtag.tag_mode != TM_IMPLICIT) \
- skip--; \
- break; \
- } else { \
- if(newtag.tag_mode == TM_IMPLICIT) \
- skip++; \
- } \
- __p = realloc((*tags), \
- sizeof(struct asn1p_type_tag_s) * (count + 1)); \
- if(!__p) return -1; \
- *tags = __p; \
- (*tags)[count++] = newtag; \
- if((flags & AFT_FETCH_OUTMOST)) return count; \
-} while(0)
-
-/* X.691, #22.2 */
-static int asn1f_fetch_minimal_choice_root_tag(arg_t *arg, struct asn1p_type_tag_s *tag, enum asn1f_aft_flags_e flags);
-
-static int
-asn1f_fetch_tags_impl(arg_t *arg, struct asn1p_type_tag_s **tags, int count, int skip, enum asn1f_aft_flags_e flags) {
- asn1p_expr_t *expr = arg->expr;
-
- DEBUG("Fetching tag from %s: meta %d, type %s", expr->Identifier,
- expr->meta_type, expr->expr_type);
-
- /* If this type is tagged, add this tag first */
- if(expr->tag.tag_class != TC_NOCLASS)
- ADD_TAG(skip, expr->tag);
-
- /* REMOVE ME */
- if(expr->expr_type == A1TC_EXTENSIBLE) {
- struct asn1p_type_tag_s tt;
- memset(&tt, 0, sizeof(tt));
- tt.tag_class = -1;
- ADD_TAG(skip, tt);
- return count;
- }
-
- if(expr->meta_type == AMT_TYPE) {
- struct asn1p_type_tag_s tt;
- memset(&tt, 0, sizeof(tt));
- tt.tag_class = TC_UNIVERSAL;
- tt.tag_value = expr_type2uclass_value[expr->expr_type];
- if(tt.tag_value == 0) {
- if(expr->expr_type == ASN_TYPE_ANY
- && (flags & AFT_IMAGINARY_ANY))
- tt.tag_value = -1;
- else if(expr->expr_type != ASN_CONSTR_CHOICE)
- return -1;
- else if(count) return count;
- else if((flags & AFT_CANON_CHOICE) == 0)
- return -1;
- else if(asn1f_fetch_minimal_choice_root_tag(arg,
- &tt, flags))
- return -1;
- }
- ADD_TAG(skip, tt);
- return count;
- }
-
- if(expr->meta_type == AMT_TYPEREF) {
- asn1p_expr_t *nexpr;
- DEBUG("Following the reference %s", expr->Identifier);
- nexpr = asn1f_lookup_symbol(arg, expr->rhs_pspecs, expr->reference);
- if(nexpr == NULL) {
- if(errno != EEXIST) /* -fknown-extern-type */
- return -1;
- if(!count)
- return 0; /* OK */
- if((*tags)[count-1].tag_mode == TM_IMPLICIT) {
- WARNING("Tagging mode for %s "
- "is IMPLICIT, assuming %s "
- "has exactly one tag",
- expr->Identifier,
- asn1f_printable_reference(expr->reference)
- );
- return count;
- }
- FATAL("Tagging mode %s -> %s "
- "dangerously incompatible",
- expr->Identifier,
- asn1f_printable_reference(expr->reference)
- );
- return -1;
- } else {
- arg->expr = nexpr;
- }
- if(expr->_mark & TM_RECURSION)
- return -1;
- expr->_mark |= TM_RECURSION;
- count = asn1f_fetch_tags_impl(arg, tags, count, skip, flags);
- expr->_mark &= ~TM_RECURSION;
- return count;
- }
-
- DEBUG("No tags discovered for type %d", expr->expr_type);
-
- return -1;
-}
-
-static int
-asn1f_fetch_minimal_choice_root_tag(arg_t *arg, struct asn1p_type_tag_s *tag, enum asn1f_aft_flags_e flags) {
- struct asn1p_type_tag_s min_tag;
- asn1p_expr_t *v;
-
- memset(&min_tag, 0, sizeof(min_tag));
- min_tag.tag_class = TC_PRIVATE + 1;
-
- TQ_FOR(v, &(arg->expr->members), next) {
- arg_t tmparg = *arg;
- struct asn1p_type_tag_s *tags = 0;
- int count;
-
- if(v->expr_type == A1TC_EXTENSIBLE)
- break; /* Search only within extension root */
-
- tmparg.expr = v;
- count = asn1f_fetch_tags_impl(&tmparg, &tags, 0, 0, flags);
- if(count <= 0) continue;
-
- if(tags[0].tag_class < min_tag.tag_class)
- min_tag = tags[0];
- else if(tags[0].tag_class == min_tag.tag_class
- && tags[0].tag_value < min_tag.tag_value)
- min_tag = tags[0];
- free(tags);
- }
-
- if(min_tag.tag_class == TC_PRIVATE + 1)
- return -1;
- else
- *tag = min_tag;
- return 0;
-}
-
-int
-asn1f_fetch_outmost_tag(asn1p_t *asn, asn1_namespace_t *ns, asn1p_module_t *mod, asn1p_expr_t *expr, struct asn1p_type_tag_s *tag, enum asn1f_aft_flags_e flags) {
- struct asn1p_type_tag_s *tags;
- int count;
-
- flags |= AFT_FETCH_OUTMOST;
-
- count = asn1f_fetch_tags(asn, ns, mod, expr, &tags, flags);
- if(count <= 0) return count;
-
- *tag = tags[0];
- free(tags);
-
- return 0;
-}
-
-int
-asn1f_fetch_tags(asn1p_t *asn, asn1_namespace_t *ns, asn1p_module_t *mod, asn1p_expr_t *expr, struct asn1p_type_tag_s **tags_r, enum asn1f_aft_flags_e flags) {
- arg_t arg;
- struct asn1p_type_tag_s *tags = 0;
- int count;
-
- memset(&arg, 0, sizeof(arg));
- arg.asn = asn;
- arg.ns = ns;
- arg.mod = mod;
- arg.expr = expr;
-
- count = asn1f_fetch_tags_impl(&arg, &tags, 0, 0, flags);
- if (count <= 0) {
- free(tags);
- tags = 0;
- }
- *tags_r = tags;
- return count;
-}
Code Review / com / asn1c.git / blobdiff