Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 1 | #include "asn1c_internal.h" |
Lev Walkin | 59004fa | 2004-08-20 13:37:01 +0000 | [diff] [blame] | 2 | #include "asn1c_misc.h" |
| 3 | |
Lev Walkin | 082cadc | 2005-08-14 02:18:27 +0000 | [diff] [blame] | 4 | #include <asn1fix_crange.h> /* constraint groker from libasn1fix */ |
| 5 | #include <asn1fix_export.h> /* other exportable stuff from libasn1fix */ |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 6 | |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 7 | /* |
Lev Walkin | 801fabc | 2005-01-28 12:18:50 +0000 | [diff] [blame] | 8 | * Checks that the given string is not a reserved C/C++ keyword. |
Lev Walkin | 3fe2e12 | 2005-03-03 21:29:27 +0000 | [diff] [blame] | 9 | * ISO/IEC 9899:1999 (C99), A.1.2 |
Lev Walkin | 801fabc | 2005-01-28 12:18:50 +0000 | [diff] [blame] | 10 | */ |
| 11 | static char *res_kwd[] = { |
Lev Walkin | 30ae27b | 2013-03-19 17:15:28 -0700 | [diff] [blame] | 12 | "auto", "break", "case", "char", "const", "continue", "default", |
| 13 | "do", "double", "else", "enum", "extern", "float", "for", "goto", |
| 14 | "if", "inline", "int", "long", "register", "restrict", "return", |
| 15 | "short", "signed", "sizeof", "static", "struct", "switch", "typedef", |
| 16 | "union", "unsigned", "void", "volatile", "while", |
| 17 | "_Bool", "_Complex", "_Imaginary", |
| 18 | /* C++ */ |
Lev Walkin | 2a744a7 | 2013-03-27 01:56:23 -0700 | [diff] [blame] | 19 | "class", "explicit", "bool", "mutable", |
Lev Walkin | 30ae27b | 2013-03-19 17:15:28 -0700 | [diff] [blame] | 20 | "template", "typeid", "typename", "and", "and_eq", |
| 21 | "or", "or_eq", "xor", "xor_eq", "not", "not_eq", |
| 22 | "bitor", "compl", "bitand", |
| 23 | "const_cast", "dynamic_cast", "reinterpret_cast", |
| 24 | "static_cast", "true", "false", "namespace", "using", |
| 25 | "throw", "try", "catch" |
Lev Walkin | 3fe2e12 | 2005-03-03 21:29:27 +0000 | [diff] [blame] | 26 | }; |
Lev Walkin | 801fabc | 2005-01-28 12:18:50 +0000 | [diff] [blame] | 27 | static int |
| 28 | reserved_keyword(const char *str) { |
Lev Walkin | c46b7cb | 2006-08-18 02:27:55 +0000 | [diff] [blame] | 29 | size_t i; |
Lev Walkin | 801fabc | 2005-01-28 12:18:50 +0000 | [diff] [blame] | 30 | for(i = 0 ; i < sizeof(res_kwd)/sizeof(res_kwd[0]); i++) { |
| 31 | if(strcmp(str, res_kwd[i]) == 0) |
| 32 | return 1; |
| 33 | } |
| 34 | return 0; |
| 35 | } |
| 36 | |
| 37 | /* |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 38 | * Construct identifier from multiple parts. |
| 39 | * Convert unsafe characters to underscores. |
| 40 | */ |
| 41 | char * |
Lev Walkin | a00d6b3 | 2006-03-21 03:40:38 +0000 | [diff] [blame] | 42 | asn1c_make_identifier(enum ami_flags_e flags, asn1p_expr_t *expr, ...) { |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 43 | static char *storage; |
| 44 | static int storage_size; |
| 45 | int nodelimiter = 0; |
| 46 | va_list ap; |
| 47 | char *str; |
Lev Walkin | 801fabc | 2005-01-28 12:18:50 +0000 | [diff] [blame] | 48 | char *nextstr; |
Lev Walkin | a00d6b3 | 2006-03-21 03:40:38 +0000 | [diff] [blame] | 49 | char *first = 0; |
| 50 | char *second = 0; |
Lev Walkin | c46b7cb | 2006-08-18 02:27:55 +0000 | [diff] [blame] | 51 | ssize_t size; |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 52 | char *p; |
Harald Welte | aa37b8c | 2015-09-10 09:31:18 +0200 | [diff] [blame] | 53 | char *prefix = NULL; |
| 54 | |
| 55 | if (flags & AMI_USE_PREFIX) |
| 56 | prefix = getenv("ASN1C_PREFIX"); |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 57 | |
Lev Walkin | a00d6b3 | 2006-03-21 03:40:38 +0000 | [diff] [blame] | 58 | if(expr) { |
| 59 | /* |
| 60 | * Estimate the necessary storage size |
| 61 | */ |
| 62 | if(expr->Identifier == NULL) |
| 63 | return "Member"; |
| 64 | size = strlen(expr->Identifier); |
| 65 | if(expr->spec_index != -1) { |
| 66 | static char buf[32]; |
| 67 | second = buf; |
| 68 | size += 1 + snprintf(buf, sizeof buf, "%dP%d", |
| 69 | expr->_lineno, expr->spec_index); |
| 70 | } |
| 71 | } else { |
| 72 | size = -1; |
| 73 | } |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 74 | |
Lev Walkin | a00d6b3 | 2006-03-21 03:40:38 +0000 | [diff] [blame] | 75 | va_start(ap, expr); |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 76 | while((str = va_arg(ap, char *))) |
| 77 | size += 1 + strlen(str); |
| 78 | va_end(ap); |
Lev Walkin | a00d6b3 | 2006-03-21 03:40:38 +0000 | [diff] [blame] | 79 | if(size == -1) return NULL; |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 80 | |
Harald Welte | aa37b8c | 2015-09-10 09:31:18 +0200 | [diff] [blame] | 81 | if(prefix) |
| 82 | size += 1 + strlen(prefix); |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 83 | /* |
| 84 | * Make sure we have this amount of storage. |
| 85 | */ |
| 86 | if(storage_size <= size) { |
| 87 | if(storage) free(storage); |
| 88 | storage = malloc(size + 1); |
| 89 | if(storage) { |
| 90 | storage_size = size; |
| 91 | } else { |
| 92 | storage_size = 0; |
| 93 | return NULL; |
| 94 | } |
| 95 | } |
| 96 | |
| 97 | /* |
| 98 | * Fill-in the storage. |
| 99 | */ |
Lev Walkin | a00d6b3 | 2006-03-21 03:40:38 +0000 | [diff] [blame] | 100 | va_start(ap, expr); |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 101 | p = storage; |
Harald Welte | aa37b8c | 2015-09-10 09:31:18 +0200 | [diff] [blame] | 102 | if(prefix) { |
| 103 | strcpy(storage, prefix); |
| 104 | p += strlen(prefix); |
| 105 | } |
Lev Walkin | a00d6b3 | 2006-03-21 03:40:38 +0000 | [diff] [blame] | 106 | nextstr = ""; |
Harald Welte | aa37b8c | 2015-09-10 09:31:18 +0200 | [diff] [blame] | 107 | for(str = 0; str || nextstr; str = nextstr) { |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 108 | int subst_made = 0; |
Lev Walkin | a00d6b3 | 2006-03-21 03:40:38 +0000 | [diff] [blame] | 109 | nextstr = second ? second : va_arg(ap, char *); |
| 110 | |
| 111 | if(str == 0) { |
| 112 | if(expr) { |
| 113 | str = expr->Identifier; |
| 114 | first = str; |
| 115 | second = 0; |
| 116 | } else { |
| 117 | first = nextstr; |
| 118 | continue; |
| 119 | } |
| 120 | } |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 121 | |
| 122 | if(str[0] == ' ' && str[1] == '\0') { |
| 123 | *p++ = ' '; |
| 124 | nodelimiter = 1; /* No delimiter */ |
| 125 | continue; |
| 126 | } |
| 127 | |
Lev Walkin | 22b5ed4 | 2006-09-13 02:51:20 +0000 | [diff] [blame] | 128 | if(str != first && !nodelimiter && !(flags & AMI_NODELIMITER)) |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 129 | *p++ = '_'; /* Delimiter between tokens */ |
| 130 | nodelimiter = 0; |
| 131 | |
Lev Walkin | 801fabc | 2005-01-28 12:18:50 +0000 | [diff] [blame] | 132 | /* |
| 133 | * If it is a single argument, check that it does not clash |
| 134 | * with C/C++ language keywords. |
| 135 | */ |
| 136 | if((flags & AMI_CHECK_RESERVED) |
Lev Walkin | a00d6b3 | 2006-03-21 03:40:38 +0000 | [diff] [blame] | 137 | && str == first && !nextstr && reserved_keyword(str)) { |
Lev Walkin | 801fabc | 2005-01-28 12:18:50 +0000 | [diff] [blame] | 138 | *p++ = toupper(*str++); |
| 139 | /* Fall through */ |
| 140 | } |
| 141 | |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 142 | for(; *str; str++) { |
| 143 | if(isalnum(*str)) { |
| 144 | *p++ = *str; |
| 145 | subst_made = 0; |
| 146 | } else if(!subst_made++) { |
Lev Walkin | 801fabc | 2005-01-28 12:18:50 +0000 | [diff] [blame] | 147 | if((flags & AMI_MASK_ONLY_SPACES) |
| 148 | && !isspace(*str)) { |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 149 | *p ++ = *str; |
| 150 | } else { |
| 151 | *p++ = '_'; |
| 152 | } |
| 153 | } |
| 154 | } |
| 155 | } |
| 156 | va_end(ap); |
| 157 | *p = '\0'; |
| 158 | |
| 159 | assert((p - storage) <= storage_size); |
| 160 | |
| 161 | return storage; |
| 162 | } |
| 163 | |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 164 | char * |
| 165 | asn1c_type_name(arg_t *arg, asn1p_expr_t *expr, enum tnfmt _format) { |
Lev Walkin | a00d6b3 | 2006-03-21 03:40:38 +0000 | [diff] [blame] | 166 | asn1p_expr_t *exprid = 0; |
Lev Walkin | 5a8219a | 2004-09-08 00:28:57 +0000 | [diff] [blame] | 167 | asn1p_expr_t *top_parent; |
Lev Walkin | a00d6b3 | 2006-03-21 03:40:38 +0000 | [diff] [blame] | 168 | asn1p_expr_t *terminal; |
Lev Walkin | 22b5ed4 | 2006-09-13 02:51:20 +0000 | [diff] [blame] | 169 | int stdname = 0; |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 170 | char *typename; |
| 171 | |
Lev Walkin | 5a8219a | 2004-09-08 00:28:57 +0000 | [diff] [blame] | 172 | /* Rewind to the topmost parent expression */ |
| 173 | if((top_parent = expr->parent_expr)) |
| 174 | while(top_parent->parent_expr) |
| 175 | top_parent = top_parent->parent_expr; |
| 176 | |
Lev Walkin | 725883b | 2006-10-09 12:07:58 +0000 | [diff] [blame] | 177 | if(0) DEBUG("asn1c_type_name(%s: 0x%x)", |
| 178 | expr->Identifier, expr->expr_type); |
Lev Walkin | c2a7509 | 2006-03-14 11:52:12 +0000 | [diff] [blame] | 179 | |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 180 | switch(expr->expr_type) { |
| 181 | case A1TC_REFERENCE: |
| 182 | typename = expr->reference->components[ |
| 183 | expr->reference->comp_count-1].name; |
| 184 | if(typename[0] == '&') { |
| 185 | arg_t tmp = *arg; |
| 186 | |
| 187 | /* |
| 188 | * This is a reference to a type defined in a class. |
| 189 | * Resolve it and use instead. |
| 190 | */ |
Lev Walkin | b85a813 | 2005-08-18 13:38:19 +0000 | [diff] [blame] | 191 | tmp.expr = asn1f_class_access_ex(arg->asn, |
Lev Walkin | a00d6b3 | 2006-03-21 03:40:38 +0000 | [diff] [blame] | 192 | arg->expr->module, arg->expr, expr->rhs_pspecs, expr->reference); |
Lev Walkin | c2a7509 | 2006-03-14 11:52:12 +0000 | [diff] [blame] | 193 | if(!tmp.expr) return NULL; |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 194 | |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 195 | return asn1c_type_name(&tmp, tmp.expr, _format); |
Lev Walkin | 5a8219a | 2004-09-08 00:28:57 +0000 | [diff] [blame] | 196 | } |
| 197 | |
Lev Walkin | a00d6b3 | 2006-03-21 03:40:38 +0000 | [diff] [blame] | 198 | terminal = asn1f_find_terminal_type_ex(arg->asn, expr); |
| 199 | |
Lev Walkin | c828571 | 2005-03-04 22:18:20 +0000 | [diff] [blame] | 200 | if(_format == TNF_RSAFE) { |
Lev Walkin | c828571 | 2005-03-04 22:18:20 +0000 | [diff] [blame] | 201 | if(terminal && terminal->expr_type & ASN_CONSTR_MASK) { |
| 202 | typename = terminal->Identifier; |
| 203 | } |
| 204 | } |
| 205 | |
Lev Walkin | 8dd0eed | 2004-09-17 06:32:12 +0000 | [diff] [blame] | 206 | if(_format == TNF_CTYPE) { |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 207 | /* |
Lev Walkin | 8dd0eed | 2004-09-17 06:32:12 +0000 | [diff] [blame] | 208 | * If the component references the type itself, |
Lev Walkin | c828571 | 2005-03-04 22:18:20 +0000 | [diff] [blame] | 209 | * switch to a recursion-safe type naming |
Lev Walkin | 8dd0eed | 2004-09-17 06:32:12 +0000 | [diff] [blame] | 210 | * ("struct foo" instead of "foo_t"). |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 211 | */ |
Lev Walkin | 8dd0eed | 2004-09-17 06:32:12 +0000 | [diff] [blame] | 212 | if(terminal && terminal == top_parent) { |
| 213 | _format = TNF_RSAFE; |
Lev Walkin | 5a8219a | 2004-09-08 00:28:57 +0000 | [diff] [blame] | 214 | } |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 215 | } |
Lev Walkin | a00d6b3 | 2006-03-21 03:40:38 +0000 | [diff] [blame] | 216 | |
| 217 | if(terminal && terminal->spec_index != -1) { |
| 218 | exprid = terminal; |
| 219 | typename = 0; |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 220 | } |
Lev Walkin | a00d6b3 | 2006-03-21 03:40:38 +0000 | [diff] [blame] | 221 | |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 222 | break; |
| 223 | case ASN_BASIC_INTEGER: |
| 224 | case ASN_BASIC_ENUMERATED: |
Lev Walkin | c78cbfb | 2004-09-14 12:47:45 +0000 | [diff] [blame] | 225 | case ASN_BASIC_REAL: |
Lev Walkin | 082cadc | 2005-08-14 02:18:27 +0000 | [diff] [blame] | 226 | if((expr->expr_type == ASN_BASIC_REAL |
Lev Walkin | 2a744a7 | 2013-03-27 01:56:23 -0700 | [diff] [blame] | 227 | && !(arg->flags & A1C_USE_WIDE_TYPES)) |
Lev Walkin | 082cadc | 2005-08-14 02:18:27 +0000 | [diff] [blame] | 228 | || asn1c_type_fits_long(arg, expr)) { |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 229 | switch(_format) { |
| 230 | case TNF_CTYPE: |
| 231 | case TNF_RSAFE: |
Lev Walkin | c78cbfb | 2004-09-14 12:47:45 +0000 | [diff] [blame] | 232 | if(expr->expr_type == ASN_BASIC_REAL) |
| 233 | return "double"; |
Lev Walkin | 8bb57a2 | 2007-12-03 13:41:36 +0000 | [diff] [blame] | 234 | else if(asn1c_type_fits_long(arg, expr) == FL_FITS_UNSIGN) |
| 235 | return "unsigned long"; |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 236 | else |
Lev Walkin | 475d91f | 2005-02-25 12:09:55 +0000 | [diff] [blame] | 237 | return "long"; |
Lev Walkin | 22b5ed4 | 2006-09-13 02:51:20 +0000 | [diff] [blame] | 238 | default: |
| 239 | typename = 0; |
| 240 | switch(expr->expr_type) { |
| 241 | case ASN_BASIC_INTEGER: |
| 242 | typename = "NativeInteger"; break; |
| 243 | case ASN_BASIC_ENUMERATED: |
| 244 | typename = "NativeEnumerated"; break; |
| 245 | case ASN_BASIC_REAL: |
| 246 | typename = "NativeReal"; break; |
| 247 | default: |
| 248 | break; |
| 249 | } |
| 250 | break; |
Lev Walkin | c78cbfb | 2004-09-14 12:47:45 +0000 | [diff] [blame] | 251 | } |
Lev Walkin | 22b5ed4 | 2006-09-13 02:51:20 +0000 | [diff] [blame] | 252 | if(typename) { |
| 253 | if(_format != TNF_INCLUDE) |
| 254 | return typename; |
| 255 | stdname = 1; |
| 256 | break; |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 257 | } |
| 258 | } |
| 259 | /* Fall through */ |
| 260 | default: |
Lev Walkin | 0e22b98 | 2004-08-25 02:03:26 +0000 | [diff] [blame] | 261 | if(expr->expr_type |
| 262 | & (ASN_CONSTR_MASK | ASN_BASIC_MASK | ASN_STRING_MASK)) { |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 263 | if(_format == TNF_RSAFE) |
| 264 | _format = TNF_CTYPE; |
Lev Walkin | 22b5ed4 | 2006-09-13 02:51:20 +0000 | [diff] [blame] | 265 | stdname = 1; |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 266 | typename = ASN_EXPR_TYPE2STR(expr->expr_type); |
| 267 | } else { |
Lev Walkin | 8dd0eed | 2004-09-17 06:32:12 +0000 | [diff] [blame] | 268 | _format = TNF_RSAFE; |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 269 | typename = expr->Identifier; |
| 270 | } |
| 271 | } |
| 272 | |
| 273 | switch(_format) { |
| 274 | case TNF_UNMODIFIED: |
Harald Welte | aa37b8c | 2015-09-10 09:31:18 +0200 | [diff] [blame] | 275 | return asn1c_make_identifier(stdname ? AMI_MASK_ONLY_SPACES : |
| 276 | AMI_MASK_ONLY_SPACES | AMI_USE_PREFIX, |
Lev Walkin | a00d6b3 | 2006-03-21 03:40:38 +0000 | [diff] [blame] | 277 | 0, exprid ? exprid->Identifier : typename, 0); |
Harald Welte | aa37b8c | 2015-09-10 09:31:18 +0200 | [diff] [blame] | 278 | case TNF_INCLUDE: { |
| 279 | /* as we have the quote marks " or < preceding the type |
| 280 | * name, we cannot simply have asn1c_make_identifier |
| 281 | * generate the prefix. Then we would end up with |
| 282 | * strings like PREFIX_<foo.h>" */ |
| 283 | char *prefix = getenv("ASN1C_PREFIX"); |
| 284 | if (!prefix) |
| 285 | prefix = ""; |
Lev Walkin | 22b5ed4 | 2006-09-13 02:51:20 +0000 | [diff] [blame] | 286 | return asn1c_make_identifier( |
| 287 | AMI_MASK_ONLY_SPACES | AMI_NODELIMITER, |
Lev Walkin | ffd035e | 2010-10-16 01:26:57 -0700 | [diff] [blame] | 288 | 0, ((!stdname || (arg->flags & A1C_INCLUDES_QUOTED)) |
Harald Welte | aa37b8c | 2015-09-10 09:31:18 +0200 | [diff] [blame] | 289 | ? "\"" : "<"), stdname ? "" : prefix, |
Lev Walkin | 22b5ed4 | 2006-09-13 02:51:20 +0000 | [diff] [blame] | 290 | exprid ? exprid->Identifier : typename, |
Lev Walkin | ffd035e | 2010-10-16 01:26:57 -0700 | [diff] [blame] | 291 | ((!stdname || (arg->flags & A1C_INCLUDES_QUOTED)) |
| 292 | ? ".h\"" : ".h>"), 0); |
Harald Welte | aa37b8c | 2015-09-10 09:31:18 +0200 | [diff] [blame] | 293 | } |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 294 | case TNF_SAFE: |
Harald Welte | aa37b8c | 2015-09-10 09:31:18 +0200 | [diff] [blame] | 295 | return asn1c_make_identifier(stdname ? 0 : AMI_USE_PREFIX, |
| 296 | exprid, typename, 0); |
Lev Walkin | c828571 | 2005-03-04 22:18:20 +0000 | [diff] [blame] | 297 | case TNF_CTYPE: /* C type */ |
Harald Welte | aa37b8c | 2015-09-10 09:31:18 +0200 | [diff] [blame] | 298 | return asn1c_make_identifier(stdname ? 0 : AMI_USE_PREFIX, |
| 299 | exprid, exprid?"t":typename, exprid?0:"t", 0); |
Lev Walkin | c828571 | 2005-03-04 22:18:20 +0000 | [diff] [blame] | 300 | case TNF_RSAFE: /* Recursion-safe type */ |
Harald Welte | aa37b8c | 2015-09-10 09:31:18 +0200 | [diff] [blame] | 301 | return asn1c_make_identifier(stdname ? AMI_CHECK_RESERVED : |
| 302 | AMI_CHECK_RESERVED | AMI_USE_PREFIX, 0, |
Lev Walkin | c828571 | 2005-03-04 22:18:20 +0000 | [diff] [blame] | 303 | "struct", " ", typename, 0); |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 304 | } |
| 305 | |
Lev Walkin | 8dd0eed | 2004-09-17 06:32:12 +0000 | [diff] [blame] | 306 | assert(!"unreachable"); |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 307 | return typename; |
| 308 | } |
| 309 | |
Lev Walkin | 082cadc | 2005-08-14 02:18:27 +0000 | [diff] [blame] | 310 | /* |
| 311 | * Check whether the specified INTEGER or ENUMERATED type can be represented |
Lev Walkin | 8bb57a2 | 2007-12-03 13:41:36 +0000 | [diff] [blame] | 312 | * using the generic 'long' or 'unsigned long' type. |
Lev Walkin | 082cadc | 2005-08-14 02:18:27 +0000 | [diff] [blame] | 313 | */ |
| 314 | enum asn1c_fitslong_e |
| 315 | asn1c_type_fits_long(arg_t *arg, asn1p_expr_t *expr) { |
| 316 | asn1cnst_range_t *range = 0; |
| 317 | asn1cnst_edge_t left; |
| 318 | asn1cnst_edge_t right; |
| 319 | asn1p_expr_t *v; |
| 320 | |
| 321 | /* |
| 322 | * Since we don't know the sizeof(long) on the possible target platform |
| 323 | * which will be compiling the code generated by asn1c, let's play it |
| 324 | * simple: long's range is equal to or greater than int32_t. |
Lev Walkin | 4c97bd6 | 2005-08-15 01:01:24 +0000 | [diff] [blame] | 325 | * NOTE: the most negative integer cannot be written in C, as the C99 |
| 326 | * standard will give it an unsigned type. |
| 327 | * It is defined here as a constant expression. |
Lev Walkin | 082cadc | 2005-08-14 02:18:27 +0000 | [diff] [blame] | 328 | */ |
Lev Walkin | c08c3cf | 2005-08-15 01:04:48 +0000 | [diff] [blame] | 329 | #define RIGHTMAX 2147483647 /* of 32-bit integer type */ |
| 330 | #define LEFTMIN (-RIGHTMAX-1) /* of 32-bit integer type */ |
Lev Walkin | 082cadc | 2005-08-14 02:18:27 +0000 | [diff] [blame] | 331 | |
| 332 | /* Descend to the terminal type */ |
| 333 | expr = asn1f_find_terminal_type_ex(arg->asn, expr); |
| 334 | if(expr == 0) return FL_NOTFIT; |
| 335 | |
| 336 | /* The "fits into long" operation is relevant only for integer types */ |
| 337 | switch(expr->expr_type) { |
| 338 | case ASN_BASIC_INTEGER: |
| 339 | case ASN_BASIC_ENUMERATED: |
| 340 | break; |
| 341 | default: |
| 342 | return FL_NOTFIT; |
| 343 | } |
| 344 | |
| 345 | /* |
| 346 | * First, evaluate the range of explicitly given identifiers. |
| 347 | */ |
| 348 | TQ_FOR(v, &(expr->members), next) { |
| 349 | if(v->expr_type != A1TC_UNIVERVAL) |
| 350 | continue; |
| 351 | if(v->value->value.v_integer < LEFTMIN |
| 352 | || v->value->value.v_integer > RIGHTMAX) |
| 353 | return FL_NOTFIT; |
| 354 | } |
| 355 | |
Lev Walkin | 4b55341 | 2005-08-14 14:45:44 +0000 | [diff] [blame] | 356 | if(!expr->combined_constraints) |
Lev Walkin | 2a744a7 | 2013-03-27 01:56:23 -0700 | [diff] [blame] | 357 | return (arg->flags & A1C_USE_WIDE_TYPES) |
| 358 | ? FL_NOTFIT : FL_PRESUMED; |
Lev Walkin | 4b55341 | 2005-08-14 14:45:44 +0000 | [diff] [blame] | 359 | |
Lev Walkin | 082cadc | 2005-08-14 02:18:27 +0000 | [diff] [blame] | 360 | /* |
Lev Walkin | 4b55341 | 2005-08-14 14:45:44 +0000 | [diff] [blame] | 361 | * Second, if -fbless-SIZE is given, the (SIZE()) constraint may be |
| 362 | * applied (non-standard! but we can deal with this) to the type. |
| 363 | * Check the range. |
Lev Walkin | 082cadc | 2005-08-14 02:18:27 +0000 | [diff] [blame] | 364 | */ |
Lev Walkin | 4b55341 | 2005-08-14 14:45:44 +0000 | [diff] [blame] | 365 | range = asn1constraint_compute_PER_range(expr->expr_type, |
| 366 | expr->combined_constraints, ACT_CT_SIZE, 0, 0, |
| 367 | CPR_simulate_fbless_SIZE); |
| 368 | if(range) { |
| 369 | if(!range->incompatible) { |
| 370 | right = range->right; |
| 371 | /* Use 4 instead of sizeof(long) is justified! */ |
| 372 | if(right.type == ARE_VALUE && right.value <= 4) |
Lev Walkin | 8bb57a2 | 2007-12-03 13:41:36 +0000 | [diff] [blame] | 373 | return FL_FITS_SIGNED; |
Lev Walkin | 4b55341 | 2005-08-14 14:45:44 +0000 | [diff] [blame] | 374 | } |
| 375 | asn1constraint_range_free(range); |
| 376 | } |
| 377 | |
| 378 | /* |
| 379 | * Third, pull up the PER visible range of the INTEGER. |
| 380 | */ |
| 381 | range = asn1constraint_compute_PER_range(expr->expr_type, |
| 382 | expr->combined_constraints, ACT_EL_RANGE, 0, 0, 0); |
Lev Walkin | e5086e3 | 2014-02-10 11:00:51 -0800 | [diff] [blame] | 383 | |
Lev Walkin | 082cadc | 2005-08-14 02:18:27 +0000 | [diff] [blame] | 384 | if(!range |
Lev Walkin | e5086e3 | 2014-02-10 11:00:51 -0800 | [diff] [blame] | 385 | /* Commenting out |
| 386 | || range->extensible |
| 387 | * because this may or may not indicate wide type. |
| 388 | */ |
Lev Walkin | 334d5cc | 2014-02-10 11:06:56 -0800 | [diff] [blame] | 389 | || (range->extensible && (arg->flags & A1C_USE_WIDE_TYPES)) |
Lev Walkin | 082cadc | 2005-08-14 02:18:27 +0000 | [diff] [blame] | 390 | || range->empty_constraint |
Lev Walkin | 082cadc | 2005-08-14 02:18:27 +0000 | [diff] [blame] | 391 | || range->incompatible |
| 392 | || range->not_PER_visible |
| 393 | ) { |
| 394 | asn1constraint_range_free(range); |
Lev Walkin | 2a744a7 | 2013-03-27 01:56:23 -0700 | [diff] [blame] | 395 | return (arg->flags & A1C_USE_WIDE_TYPES) |
| 396 | ? FL_NOTFIT : FL_PRESUMED; |
Lev Walkin | 082cadc | 2005-08-14 02:18:27 +0000 | [diff] [blame] | 397 | } |
| 398 | |
| 399 | left = range->left; |
| 400 | right = range->right; |
| 401 | asn1constraint_range_free(range); |
| 402 | |
Lev Walkin | 8bb57a2 | 2007-12-03 13:41:36 +0000 | [diff] [blame] | 403 | /* Special case for unsigned */ |
| 404 | if(left.type == ARE_VALUE |
| 405 | && left.value >= 0 |
| 406 | && right.type == ARE_VALUE |
Harald Welte | 498c971 | 2015-08-30 16:33:07 +0200 | [diff] [blame] | 407 | && right.value > 2147483647L |
Lev Walkin | e5086e3 | 2014-02-10 11:00:51 -0800 | [diff] [blame] | 408 | && right.value <= 4294967295UL) |
Lev Walkin | 8bb57a2 | 2007-12-03 13:41:36 +0000 | [diff] [blame] | 409 | return FL_FITS_UNSIGN; |
| 410 | |
| 411 | |
Lev Walkin | 082cadc | 2005-08-14 02:18:27 +0000 | [diff] [blame] | 412 | /* If some fixed value is outside of target range, not fit */ |
| 413 | if(left.type == ARE_VALUE |
| 414 | && (left.value < LEFTMIN || left.value > RIGHTMAX)) |
| 415 | return FL_NOTFIT; |
| 416 | if(right.type == ARE_VALUE |
| 417 | && (right.value > RIGHTMAX || right.value < LEFTMIN)) |
| 418 | return FL_NOTFIT; |
| 419 | |
Lev Walkin | 2a744a7 | 2013-03-27 01:56:23 -0700 | [diff] [blame] | 420 | /* If the range is open, fits only unless -fwide-types is given */ |
Lev Walkin | 082cadc | 2005-08-14 02:18:27 +0000 | [diff] [blame] | 421 | if(left.type != ARE_VALUE || right.type != ARE_VALUE) { |
Lev Walkin | 2a744a7 | 2013-03-27 01:56:23 -0700 | [diff] [blame] | 422 | return (arg->flags & A1C_USE_WIDE_TYPES) |
| 423 | ? FL_NOTFIT : FL_PRESUMED; |
Lev Walkin | 082cadc | 2005-08-14 02:18:27 +0000 | [diff] [blame] | 424 | } |
| 425 | |
Lev Walkin | 8bb57a2 | 2007-12-03 13:41:36 +0000 | [diff] [blame] | 426 | return FL_FITS_SIGNED; |
Lev Walkin | 082cadc | 2005-08-14 02:18:27 +0000 | [diff] [blame] | 427 | } |
| 428 | |