Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 1 | #include "asn1fix_internal.h" |
| 2 | |
Lev Walkin | a00d6b3 | 2006-03-21 03:40:38 +0000 | [diff] [blame^] | 3 | typedef struct resolver_arg { |
| 4 | asn1p_expr_t *(*resolver)(asn1p_expr_t *, void *arg); |
| 5 | arg_t *arg; |
| 6 | asn1p_expr_t *original_expr; |
| 7 | asn1p_paramlist_t *lhs_params; |
| 8 | asn1p_expr_t *rhs_pspecs; |
| 9 | } resolver_arg_t; |
Lev Walkin | d541c25 | 2004-09-05 10:36:22 +0000 | [diff] [blame] | 10 | |
Lev Walkin | a00d6b3 | 2006-03-21 03:40:38 +0000 | [diff] [blame^] | 11 | static asn1p_expr_t *resolve_expr(asn1p_expr_t *, void *resolver_arg); |
| 12 | static int compare_specializations(arg_t *, asn1p_expr_t *a, asn1p_expr_t *b); |
| 13 | static asn1p_expr_t *find_target_specialization_byref(resolver_arg_t *rarg, asn1p_ref_t *ref); |
| 14 | static asn1p_expr_t *find_target_specialization_bystr(resolver_arg_t *rarg, char *str); |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 15 | |
Lev Walkin | a00d6b3 | 2006-03-21 03:40:38 +0000 | [diff] [blame^] | 16 | asn1p_expr_t * |
| 17 | asn1f_parameterization_fork(arg_t *arg, asn1p_expr_t *expr, asn1p_expr_t *rhs_pspecs) { |
| 18 | resolver_arg_t rarg; /* resolver argument */ |
| 19 | asn1p_expr_t *exc; /* expr clone */ |
| 20 | asn1p_expr_t *rpc; /* rhs_pspecs clone */ |
| 21 | asn1p_expr_t *target; |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 22 | void *p; |
Lev Walkin | a00d6b3 | 2006-03-21 03:40:38 +0000 | [diff] [blame^] | 23 | struct asn1p_pspec_s *pspec; |
| 24 | int npspecs; |
| 25 | int i; |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 26 | |
Lev Walkin | a00d6b3 | 2006-03-21 03:40:38 +0000 | [diff] [blame^] | 27 | assert(rhs_pspecs); |
| 28 | assert(expr->lhs_params); |
| 29 | assert(expr->parent_expr == 0); |
| 30 | |
| 31 | DEBUG("Forking parameterization at %d for %s (%d alr)", |
| 32 | rhs_pspecs->_lineno, expr->Identifier, |
| 33 | expr->specializations.pspecs_count); |
Lev Walkin | f593f10 | 2005-02-22 07:59:59 +0000 | [diff] [blame] | 34 | |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 35 | /* |
Lev Walkin | a00d6b3 | 2006-03-21 03:40:38 +0000 | [diff] [blame^] | 36 | * Find if this exact specialization has been used already. |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 37 | */ |
Lev Walkin | a00d6b3 | 2006-03-21 03:40:38 +0000 | [diff] [blame^] | 38 | for(npspecs = 0; |
| 39 | npspecs < expr->specializations.pspecs_count; |
| 40 | npspecs++) { |
| 41 | if(compare_specializations(arg, rhs_pspecs, |
| 42 | expr->specializations.pspec[npspecs].rhs_pspecs) == 0) { |
| 43 | DEBUG("Reused parameterization for %s", |
| 44 | expr->Identifier); |
| 45 | return expr->specializations.pspec[npspecs].my_clone; |
Lev Walkin | d594771 | 2005-11-05 12:28:14 +0000 | [diff] [blame] | 46 | } |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 47 | } |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 48 | |
Lev Walkin | a00d6b3 | 2006-03-21 03:40:38 +0000 | [diff] [blame^] | 49 | rarg.resolver = resolve_expr; |
| 50 | rarg.arg = arg; |
| 51 | rarg.original_expr = expr; |
| 52 | rarg.lhs_params = expr->lhs_params; |
| 53 | rarg.rhs_pspecs = rhs_pspecs; |
| 54 | exc = asn1p_expr_clone_with_resolver(expr, resolve_expr, &rarg); |
| 55 | rpc = asn1p_expr_clone(rhs_pspecs, 0); |
| 56 | assert(exc && rpc); |
| 57 | |
| 58 | /* |
| 59 | * Create a new specialization. |
| 60 | */ |
| 61 | npspecs = expr->specializations.pspecs_count; |
| 62 | p = realloc(expr->specializations.pspec, |
| 63 | (npspecs + 1) * sizeof(expr->specializations.pspec[0])); |
| 64 | assert(p); |
| 65 | expr->specializations.pspec = p; |
| 66 | pspec = &expr->specializations.pspec[npspecs]; |
| 67 | memset(pspec, 0, sizeof *pspec); |
| 68 | |
| 69 | pspec->rhs_pspecs = rpc; |
| 70 | pspec->my_clone = exc; |
| 71 | exc->spec_index = npspecs; |
| 72 | |
| 73 | /* Update LHS->RHS specialization in target */ |
| 74 | target = TQ_FIRST(&rpc->members); |
| 75 | for(i = 0; i < exc->lhs_params->params_count; |
| 76 | i++, target = TQ_NEXT(target, next)) { |
| 77 | if(!target) { target = (void *)0xdeadbeef; break; } |
| 78 | |
| 79 | assert(exc->lhs_params->params[i].into_expr == 0); |
| 80 | exc->lhs_params->params[i].into_expr = target; |
| 81 | } |
| 82 | if(target) { |
| 83 | asn1p_expr_free(exc); |
| 84 | asn1p_expr_free(rpc); |
| 85 | FATAL("Parameterization of %s failed: " |
| 86 | "parameters number mismatch", expr->Identifier); |
| 87 | errno = EPERM; |
| 88 | return NULL; |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 89 | } |
| 90 | |
Lev Walkin | a00d6b3 | 2006-03-21 03:40:38 +0000 | [diff] [blame^] | 91 | DEBUG("Forked new parameterization for %s", expr->Identifier); |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 92 | |
Lev Walkin | a00d6b3 | 2006-03-21 03:40:38 +0000 | [diff] [blame^] | 93 | /* Commit */ |
| 94 | expr->specializations.pspecs_count = npspecs + 1; |
| 95 | return exc; |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 96 | } |
| 97 | |
| 98 | static int |
Lev Walkin | a00d6b3 | 2006-03-21 03:40:38 +0000 | [diff] [blame^] | 99 | compare_specializations(arg_t *arg, asn1p_expr_t *a, asn1p_expr_t *b) { |
| 100 | asn1p_expr_t *ac = TQ_FIRST(&a->members); |
| 101 | asn1p_expr_t *bc = TQ_FIRST(&b->members); |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 102 | |
Lev Walkin | a00d6b3 | 2006-03-21 03:40:38 +0000 | [diff] [blame^] | 103 | for(;ac && bc; ac = TQ_NEXT(ac, next), bc = TQ_NEXT(bc, next)) { |
| 104 | retry: |
| 105 | if(ac == bc) continue; |
| 106 | if(ac->meta_type != bc->meta_type) break; |
| 107 | if(ac->expr_type != bc->expr_type) break; |
Lev Walkin | f593f10 | 2005-02-22 07:59:59 +0000 | [diff] [blame] | 108 | |
Lev Walkin | a00d6b3 | 2006-03-21 03:40:38 +0000 | [diff] [blame^] | 109 | if(!ac->reference && !bc->reference) |
| 110 | continue; |
Lev Walkin | d541c25 | 2004-09-05 10:36:22 +0000 | [diff] [blame] | 111 | |
Lev Walkin | a00d6b3 | 2006-03-21 03:40:38 +0000 | [diff] [blame^] | 112 | if(ac->reference) { |
| 113 | ac = asn1f_lookup_symbol(arg, |
| 114 | ac->module, ac->rhs_pspecs, ac->reference); |
| 115 | if(!ac) break; |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 116 | } |
Lev Walkin | a00d6b3 | 2006-03-21 03:40:38 +0000 | [diff] [blame^] | 117 | if(bc->reference) { |
| 118 | bc = asn1f_lookup_symbol(arg, |
| 119 | bc->module, bc->rhs_pspecs, bc->reference); |
| 120 | if(!bc) break; |
| 121 | } |
| 122 | goto retry; |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 123 | } |
| 124 | |
Lev Walkin | a00d6b3 | 2006-03-21 03:40:38 +0000 | [diff] [blame^] | 125 | if(ac || bc) |
| 126 | /* Specializations do not match: different size option sets */ |
| 127 | return -1; |
| 128 | |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 129 | return 0; |
| 130 | } |
| 131 | |
| 132 | static asn1p_expr_t * |
Lev Walkin | a00d6b3 | 2006-03-21 03:40:38 +0000 | [diff] [blame^] | 133 | resolve_expr(asn1p_expr_t *expr_to_resolve, void *resolver_arg) { |
| 134 | resolver_arg_t *rarg = resolver_arg; |
| 135 | arg_t *arg = rarg->arg; |
| 136 | asn1p_expr_t *expr; |
| 137 | asn1p_expr_t *nex; |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 138 | |
Lev Walkin | a00d6b3 | 2006-03-21 03:40:38 +0000 | [diff] [blame^] | 139 | DEBUG("Resolving %s (meta %d)", |
| 140 | expr_to_resolve->Identifier, expr_to_resolve->meta_type); |
| 141 | |
| 142 | if(expr_to_resolve->meta_type == AMT_TYPEREF) { |
| 143 | expr = find_target_specialization_byref(rarg, |
| 144 | expr_to_resolve->reference); |
| 145 | if(!expr) return NULL; |
| 146 | } else if(expr_to_resolve->meta_type == AMT_VALUE) { |
| 147 | assert(expr_to_resolve->value); |
| 148 | expr = find_target_specialization_bystr(rarg, |
| 149 | expr_to_resolve->Identifier); |
| 150 | if(!expr) return NULL; |
| 151 | } else { |
| 152 | errno = ESRCH; |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 153 | return NULL; |
Lev Walkin | a00d6b3 | 2006-03-21 03:40:38 +0000 | [diff] [blame^] | 154 | } |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 155 | |
Lev Walkin | a00d6b3 | 2006-03-21 03:40:38 +0000 | [diff] [blame^] | 156 | DEBUG("Found target %s", expr->Identifier); |
| 157 | if(expr->meta_type == AMT_TYPE |
| 158 | || expr->meta_type == AMT_VALUE) { |
| 159 | DEBUG("Target is a simple type %s", |
| 160 | ASN_EXPR_TYPE2STR(expr->expr_type)); |
| 161 | nex = asn1p_expr_clone(expr, 0); |
| 162 | free(nex->Identifier); |
| 163 | nex->Identifier = expr_to_resolve->Identifier |
| 164 | ? strdup(expr_to_resolve->Identifier) : 0; |
| 165 | return nex; |
| 166 | } else { |
| 167 | FATAL("Feature not implemented for %s", |
| 168 | rarg->original_expr->Identifier); |
| 169 | errno = EPERM; |
| 170 | return NULL; |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 171 | } |
| 172 | |
| 173 | return NULL; |
| 174 | } |
Lev Walkin | d541c25 | 2004-09-05 10:36:22 +0000 | [diff] [blame] | 175 | |
Lev Walkin | a00d6b3 | 2006-03-21 03:40:38 +0000 | [diff] [blame^] | 176 | static asn1p_expr_t * |
| 177 | find_target_specialization_byref(resolver_arg_t *rarg, asn1p_ref_t *ref) { |
| 178 | char *refstr; |
Lev Walkin | d541c25 | 2004-09-05 10:36:22 +0000 | [diff] [blame] | 179 | |
Lev Walkin | a00d6b3 | 2006-03-21 03:40:38 +0000 | [diff] [blame^] | 180 | if(!ref || ref->comp_count != 1) { |
| 181 | errno = ESRCH; |
| 182 | return NULL; |
Lev Walkin | d541c25 | 2004-09-05 10:36:22 +0000 | [diff] [blame] | 183 | } |
| 184 | |
Lev Walkin | a00d6b3 | 2006-03-21 03:40:38 +0000 | [diff] [blame^] | 185 | refstr = ref->components[0].name; /* T */ |
| 186 | |
| 187 | return find_target_specialization_bystr(rarg, refstr); |
Lev Walkin | d541c25 | 2004-09-05 10:36:22 +0000 | [diff] [blame] | 188 | } |
| 189 | |
Lev Walkin | a00d6b3 | 2006-03-21 03:40:38 +0000 | [diff] [blame^] | 190 | static asn1p_expr_t * |
| 191 | find_target_specialization_bystr(resolver_arg_t *rarg, char *refstr) { |
| 192 | arg_t *arg = rarg->arg; |
| 193 | asn1p_expr_t *target; |
| 194 | int i; |
Lev Walkin | d541c25 | 2004-09-05 10:36:22 +0000 | [diff] [blame] | 195 | |
Lev Walkin | a00d6b3 | 2006-03-21 03:40:38 +0000 | [diff] [blame^] | 196 | target = TQ_FIRST(&rarg->rhs_pspecs->members); |
| 197 | for(i = 0; i < rarg->lhs_params->params_count; |
| 198 | i++, target = TQ_NEXT(target, next)) { |
| 199 | struct asn1p_param_s *param = &rarg->lhs_params->params[i]; |
| 200 | if(!target) break; |
Lev Walkin | d541c25 | 2004-09-05 10:36:22 +0000 | [diff] [blame] | 201 | |
Lev Walkin | a00d6b3 | 2006-03-21 03:40:38 +0000 | [diff] [blame^] | 202 | if(strcmp(param->argument, refstr)) |
| 203 | continue; |
Lev Walkin | d541c25 | 2004-09-05 10:36:22 +0000 | [diff] [blame] | 204 | |
Lev Walkin | a00d6b3 | 2006-03-21 03:40:38 +0000 | [diff] [blame^] | 205 | return target; |
| 206 | } |
| 207 | if(i != rarg->lhs_params->params_count) { |
| 208 | FATAL("Parameterization of %s failed: " |
| 209 | "parameters number mismatch", |
| 210 | rarg->original_expr->Identifier); |
| 211 | errno = EPERM; |
| 212 | return NULL; |
Lev Walkin | d541c25 | 2004-09-05 10:36:22 +0000 | [diff] [blame] | 213 | } |
| 214 | |
Lev Walkin | a00d6b3 | 2006-03-21 03:40:38 +0000 | [diff] [blame^] | 215 | errno = ESRCH; |
| 216 | return NULL; |
Lev Walkin | d541c25 | 2004-09-05 10:36:22 +0000 | [diff] [blame] | 217 | } |