Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 1 | #include "asn1fix_internal.h" |
| 2 | |
| 3 | int |
Lev Walkin | d541c25 | 2004-09-05 10:36:22 +0000 | [diff] [blame] | 4 | asn1f_fetch_tag(asn1p_t *asn, asn1p_module_t *mod, asn1p_expr_t *expr, struct asn1p_type_tag_s *tag, int flags) { |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 5 | int ret; |
| 6 | |
| 7 | if(expr->tag.tag_class != TC_NOCLASS) { |
| 8 | *tag = expr->tag; |
| 9 | return 0; |
| 10 | } |
| 11 | |
| 12 | if(expr->expr_type == A1TC_EXTENSIBLE) { |
| 13 | memset(tag, 0, sizeof(*tag)); |
| 14 | tag->tag_class = -1; |
| 15 | return 0; |
| 16 | } |
| 17 | |
| 18 | if(expr->meta_type == AMT_TYPE) { |
| 19 | memset(tag, 0, sizeof(*tag)); |
| 20 | tag->tag_class = TC_UNIVERSAL; |
| 21 | tag->tag_value = expr_type2uclass_value[expr->expr_type]; |
Lev Walkin | d541c25 | 2004-09-05 10:36:22 +0000 | [diff] [blame] | 22 | if(flags && expr->expr_type == ASN_TYPE_ANY) { |
| 23 | assert(tag->tag_value == 0); |
| 24 | tag->tag_value = -1; |
| 25 | return 0; |
| 26 | } |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 27 | return (tag->tag_value == 0) ? -1 : 0; |
| 28 | } |
| 29 | |
| 30 | if(expr->meta_type == AMT_TYPEREF) { |
| 31 | arg_t arg; |
| 32 | |
| 33 | memset(&arg, 0, sizeof(arg)); |
| 34 | arg.asn = asn; |
| 35 | arg.mod = mod; |
| 36 | arg.expr = expr; |
| 37 | |
Lev Walkin | 6fec44d | 2004-08-22 03:10:23 +0000 | [diff] [blame] | 38 | expr = asn1f_lookup_symbol(&arg, expr->module, expr->reference); |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 39 | if(expr == NULL) return -1; |
| 40 | |
| 41 | if(expr->_mark & TM_RECURSION) |
| 42 | return -1; |
| 43 | |
| 44 | expr->_mark |= TM_RECURSION; |
Lev Walkin | d541c25 | 2004-09-05 10:36:22 +0000 | [diff] [blame] | 45 | ret = asn1f_fetch_tag(asn, expr->module, expr, tag, |
| 46 | flags); |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 47 | expr->_mark &= ~TM_RECURSION; |
| 48 | return ret; |
| 49 | } |
| 50 | |
| 51 | return -1; |
| 52 | } |
| 53 | |