Chih-Hung Hsieh | e42c505 | 2020-04-16 10:44:21 -0700 | [diff] [blame] | 1 | mat!(ascii_literal, r"a", "a", Some((0, 1))); |
| 2 | |
| 3 | // Some crazy expressions from regular-expressions.info. |
| 4 | mat!( |
| 5 | match_ranges, |
| 6 | r"(?-u)\b(?:[0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\b", |
| 7 | "num: 255", |
| 8 | Some((5, 8)) |
| 9 | ); |
| 10 | mat!( |
| 11 | match_ranges_not, |
| 12 | r"(?-u)\b(?:[0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\b", |
| 13 | "num: 256", |
| 14 | None |
| 15 | ); |
| 16 | mat!(match_float1, r"[-+]?[0-9]*\.?[0-9]+", "0.1", Some((0, 3))); |
| 17 | mat!(match_float2, r"[-+]?[0-9]*\.?[0-9]+", "0.1.2", Some((0, 3))); |
| 18 | mat!(match_float3, r"[-+]?[0-9]*\.?[0-9]+", "a1.2", Some((1, 4))); |
| 19 | mat!(match_float4, r"^[-+]?[0-9]*\.?[0-9]+$", "1.a", None); |
| 20 | mat!( |
| 21 | match_email, |
| 22 | r"(?i-u)\b[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,4}\b", |
| 23 | "mine is jam.slam@gmail.com ", |
| 24 | Some((8, 26)) |
| 25 | ); |
| 26 | mat!( |
| 27 | match_email_not, |
| 28 | r"(?i-u)\b[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,4}\b", |
| 29 | "mine is jam.slam@gmail ", |
| 30 | None |
| 31 | ); |
| 32 | mat!( |
| 33 | match_email_big, |
| 34 | r"[a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&'*+/=?^_`{|}~-]+)*@(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?", |
| 35 | "mine is jam.slam@gmail.com ", |
| 36 | Some((8, 26)) |
| 37 | ); |
| 38 | mat!( |
| 39 | match_date1, |
| 40 | r"(?-u)^(19|20)\d\d[- /.](0[1-9]|1[012])[- /.](0[1-9]|[12][0-9]|3[01])$", |
| 41 | "1900-01-01", |
| 42 | Some((0, 10)) |
| 43 | ); |
| 44 | mat!( |
| 45 | match_date2, |
| 46 | r"(?-u)^(19|20)\d\d[- /.](0[1-9]|1[012])[- /.](0[1-9]|[12][0-9]|3[01])$", |
| 47 | "1900-00-01", |
| 48 | None |
| 49 | ); |
| 50 | mat!( |
| 51 | match_date3, |
| 52 | r"(?-u)^(19|20)\d\d[- /.](0[1-9]|1[012])[- /.](0[1-9]|[12][0-9]|3[01])$", |
| 53 | "1900-13-01", |
| 54 | None |
| 55 | ); |
| 56 | |
| 57 | // Do some crazy dancing with the start/end assertions. |
| 58 | matiter!(match_start_end_empty, r"^$", "", (0, 0)); |
| 59 | matiter!(match_start_end_empty_many_1, r"^$^$^$", "", (0, 0)); |
| 60 | matiter!(match_start_end_empty_many_2, r"^^^$$$", "", (0, 0)); |
| 61 | matiter!(match_start_end_empty_rev, r"$^", "", (0, 0)); |
| 62 | matiter!( |
| 63 | match_start_end_empty_rep, |
| 64 | r"(?:^$)*", |
| 65 | "a\nb\nc", |
| 66 | (0, 0), |
| 67 | (1, 1), |
| 68 | (2, 2), |
| 69 | (3, 3), |
| 70 | (4, 4), |
| 71 | (5, 5) |
| 72 | ); |
| 73 | matiter!( |
| 74 | match_start_end_empty_rep_rev, |
| 75 | r"(?:$^)*", |
| 76 | "a\nb\nc", |
| 77 | (0, 0), |
| 78 | (1, 1), |
| 79 | (2, 2), |
| 80 | (3, 3), |
| 81 | (4, 4), |
| 82 | (5, 5) |
| 83 | ); |
| 84 | |
| 85 | // Test negated character classes. |
| 86 | mat!(negclass_letters, r"[^ac]", "acx", Some((2, 3))); |
| 87 | mat!(negclass_letter_comma, r"[^a,]", "a,x", Some((2, 3))); |
| 88 | mat!(negclass_letter_space, r"[^a[:space:]]", "a x", Some((2, 3))); |
| 89 | mat!(negclass_comma, r"[^,]", ",,x", Some((2, 3))); |
| 90 | mat!(negclass_space, r"[^[:space:]]", " a", Some((1, 2))); |
| 91 | mat!(negclass_space_comma, r"[^,[:space:]]", ", a", Some((2, 3))); |
| 92 | mat!(negclass_comma_space, r"[^[:space:],]", " ,a", Some((2, 3))); |
| 93 | mat!(negclass_ascii, r"[^[:alpha:]Z]", "A1", Some((1, 2))); |
| 94 | |
| 95 | // Test that repeated empty expressions don't loop forever. |
| 96 | mat!(lazy_many_many, r"((?:.*)*?)=", "a=b", Some((0, 2))); |
| 97 | mat!(lazy_many_optional, r"((?:.?)*?)=", "a=b", Some((0, 2))); |
| 98 | mat!(lazy_one_many_many, r"((?:.*)+?)=", "a=b", Some((0, 2))); |
| 99 | mat!(lazy_one_many_optional, r"((?:.?)+?)=", "a=b", Some((0, 2))); |
| 100 | mat!(lazy_range_min_many, r"((?:.*){1,}?)=", "a=b", Some((0, 2))); |
| 101 | mat!(lazy_range_many, r"((?:.*){1,2}?)=", "a=b", Some((0, 2))); |
| 102 | mat!(greedy_many_many, r"((?:.*)*)=", "a=b", Some((0, 2))); |
| 103 | mat!(greedy_many_optional, r"((?:.?)*)=", "a=b", Some((0, 2))); |
| 104 | mat!(greedy_one_many_many, r"((?:.*)+)=", "a=b", Some((0, 2))); |
| 105 | mat!(greedy_one_many_optional, r"((?:.?)+)=", "a=b", Some((0, 2))); |
| 106 | mat!(greedy_range_min_many, r"((?:.*){1,})=", "a=b", Some((0, 2))); |
| 107 | mat!(greedy_range_many, r"((?:.*){1,2})=", "a=b", Some((0, 2))); |
| 108 | |
| 109 | // Test that we handle various flavors of empty expressions. |
| 110 | matiter!(match_empty1, r"", "", (0, 0)); |
| 111 | matiter!(match_empty2, r"", "abc", (0, 0), (1, 1), (2, 2), (3, 3)); |
| 112 | matiter!(match_empty3, r"()", "abc", (0, 0), (1, 1), (2, 2), (3, 3)); |
| 113 | matiter!(match_empty4, r"()*", "abc", (0, 0), (1, 1), (2, 2), (3, 3)); |
| 114 | matiter!(match_empty5, r"()+", "abc", (0, 0), (1, 1), (2, 2), (3, 3)); |
| 115 | matiter!(match_empty6, r"()?", "abc", (0, 0), (1, 1), (2, 2), (3, 3)); |
| 116 | matiter!(match_empty7, r"()()", "abc", (0, 0), (1, 1), (2, 2), (3, 3)); |
| 117 | matiter!(match_empty8, r"()+|z", "abc", (0, 0), (1, 1), (2, 2), (3, 3)); |
| 118 | matiter!(match_empty9, r"z|()+", "abc", (0, 0), (1, 1), (2, 2), (3, 3)); |
| 119 | matiter!(match_empty10, r"()+|b", "abc", (0, 0), (1, 1), (2, 2), (3, 3)); |
| 120 | matiter!(match_empty11, r"b|()+", "abc", (0, 0), (1, 2), (3, 3)); |
Haibo Huang | 49cbe5f | 2020-05-28 20:14:24 -0700 | [diff] [blame] | 121 | matiter!(match_empty12, r"|b", "abc", (0, 0), (1, 1), (2, 2), (3, 3)); |
| 122 | matiter!(match_empty13, r"b|", "abc", (0, 0), (1, 2), (3, 3)); |
| 123 | matiter!(match_empty14, r"|z", "abc", (0, 0), (1, 1), (2, 2), (3, 3)); |
| 124 | matiter!(match_empty15, r"z|", "abc", (0, 0), (1, 1), (2, 2), (3, 3)); |
| 125 | matiter!(match_empty16, r"|", "abc", (0, 0), (1, 1), (2, 2), (3, 3)); |
| 126 | matiter!(match_empty17, r"||", "abc", (0, 0), (1, 1), (2, 2), (3, 3)); |
| 127 | matiter!(match_empty18, r"||z", "abc", (0, 0), (1, 1), (2, 2), (3, 3)); |
| 128 | matiter!(match_empty19, r"(?:)|b", "abc", (0, 0), (1, 1), (2, 2), (3, 3)); |
| 129 | matiter!(match_empty20, r"b|(?:)", "abc", (0, 0), (1, 2), (3, 3)); |
| 130 | matiter!(match_empty21, r"(?:|)", "abc", (0, 0), (1, 1), (2, 2), (3, 3)); |
| 131 | matiter!(match_empty22, r"(?:|)|z", "abc", (0, 0), (1, 1), (2, 2), (3, 3)); |
| 132 | matiter!(match_empty23, r"a(?:)|b", "abc", (0, 1), (1, 2)); |
Chih-Hung Hsieh | e42c505 | 2020-04-16 10:44:21 -0700 | [diff] [blame] | 133 | |
| 134 | // Test that the DFA can handle pathological cases. |
| 135 | // (This should result in the DFA's cache being flushed too frequently, which |
| 136 | // should cause it to quit and fall back to the NFA algorithm.) |
| 137 | #[test] |
| 138 | fn dfa_handles_pathological_case() { |
| 139 | fn ones_and_zeroes(count: usize) -> String { |
Elliott Hughes | ffb6030 | 2021-04-01 17:11:40 -0700 | [diff] [blame] | 140 | use rand::rngs::SmallRng; |
| 141 | use rand::{Rng, SeedableRng}; |
Chih-Hung Hsieh | e42c505 | 2020-04-16 10:44:21 -0700 | [diff] [blame] | 142 | |
Elliott Hughes | ffb6030 | 2021-04-01 17:11:40 -0700 | [diff] [blame] | 143 | let mut rng = SmallRng::from_entropy(); |
Chih-Hung Hsieh | e42c505 | 2020-04-16 10:44:21 -0700 | [diff] [blame] | 144 | let mut s = String::new(); |
| 145 | for _ in 0..count { |
| 146 | if rng.gen() { |
| 147 | s.push('1'); |
| 148 | } else { |
| 149 | s.push('0'); |
| 150 | } |
| 151 | } |
| 152 | s |
| 153 | } |
| 154 | |
| 155 | let re = regex!(r"[01]*1[01]{20}$"); |
| 156 | let text = { |
| 157 | let mut pieces = ones_and_zeroes(100_000); |
| 158 | pieces.push('1'); |
| 159 | pieces.push_str(&ones_and_zeroes(20)); |
| 160 | pieces |
| 161 | }; |
| 162 | assert!(re.is_match(text!(&*text))); |
| 163 | } |
| 164 | |
| 165 | #[test] |
| 166 | fn nest_limit_makes_it_parse() { |
| 167 | use regex::RegexBuilder; |
| 168 | |
| 169 | RegexBuilder::new( |
| 170 | r#"(?-u) |
| 171 | 2(?: |
| 172 | [45]\d{3}| |
| 173 | 7(?: |
| 174 | 1[0-267]| |
| 175 | 2[0-289]| |
| 176 | 3[0-29]| |
| 177 | 4[01]| |
| 178 | 5[1-3]| |
| 179 | 6[013]| |
| 180 | 7[0178]| |
| 181 | 91 |
| 182 | )| |
| 183 | 8(?: |
| 184 | 0[125]| |
| 185 | [139][1-6]| |
| 186 | 2[0157-9]| |
| 187 | 41| |
| 188 | 6[1-35]| |
| 189 | 7[1-5]| |
| 190 | 8[1-8]| |
| 191 | 90 |
| 192 | )| |
| 193 | 9(?: |
| 194 | 0[0-2]| |
| 195 | 1[0-4]| |
| 196 | 2[568]| |
| 197 | 3[3-6]| |
| 198 | 5[5-7]| |
| 199 | 6[0167]| |
| 200 | 7[15]| |
| 201 | 8[0146-9] |
| 202 | ) |
| 203 | )\d{4}| |
| 204 | 3(?: |
| 205 | 12?[5-7]\d{2}| |
| 206 | 0(?: |
| 207 | 2(?: |
| 208 | [025-79]\d| |
| 209 | [348]\d{1,2} |
| 210 | )| |
| 211 | 3(?: |
| 212 | [2-4]\d| |
| 213 | [56]\d? |
| 214 | ) |
| 215 | )| |
| 216 | 2(?: |
| 217 | 1\d{2}| |
| 218 | 2(?: |
| 219 | [12]\d| |
| 220 | [35]\d{1,2}| |
| 221 | 4\d? |
| 222 | ) |
| 223 | )| |
| 224 | 3(?: |
| 225 | 1\d{2}| |
| 226 | 2(?: |
| 227 | [2356]\d| |
| 228 | 4\d{1,2} |
| 229 | ) |
| 230 | )| |
| 231 | 4(?: |
| 232 | 1\d{2}| |
| 233 | 2(?: |
| 234 | 2\d{1,2}| |
| 235 | [47]| |
| 236 | 5\d{2} |
| 237 | ) |
| 238 | )| |
| 239 | 5(?: |
| 240 | 1\d{2}| |
| 241 | 29 |
| 242 | )| |
| 243 | [67]1\d{2}| |
| 244 | 8(?: |
| 245 | 1\d{2}| |
| 246 | 2(?: |
| 247 | 2\d{2}| |
| 248 | 3| |
| 249 | 4\d |
| 250 | ) |
| 251 | ) |
| 252 | )\d{3}| |
| 253 | 4(?: |
| 254 | 0(?: |
| 255 | 2(?: |
| 256 | [09]\d| |
| 257 | 7 |
| 258 | )| |
| 259 | 33\d{2} |
| 260 | )| |
| 261 | 1\d{3}| |
| 262 | 2(?: |
| 263 | 1\d{2}| |
| 264 | 2(?: |
| 265 | [25]\d?| |
| 266 | [348]\d| |
| 267 | [67]\d{1,2} |
| 268 | ) |
| 269 | )| |
| 270 | 3(?: |
| 271 | 1\d{2}(?: |
| 272 | \d{2} |
| 273 | )?| |
| 274 | 2(?: |
| 275 | [045]\d| |
| 276 | [236-9]\d{1,2} |
| 277 | )| |
| 278 | 32\d{2} |
| 279 | )| |
| 280 | 4(?: |
| 281 | [18]\d{2}| |
| 282 | 2(?: |
| 283 | [2-46]\d{2}| |
| 284 | 3 |
| 285 | )| |
| 286 | 5[25]\d{2} |
| 287 | )| |
| 288 | 5(?: |
| 289 | 1\d{2}| |
| 290 | 2(?: |
| 291 | 3\d| |
| 292 | 5 |
| 293 | ) |
| 294 | )| |
| 295 | 6(?: |
| 296 | [18]\d{2}| |
| 297 | 2(?: |
| 298 | 3(?: |
| 299 | \d{2} |
| 300 | )?| |
| 301 | [46]\d{1,2}| |
| 302 | 5\d{2}| |
| 303 | 7\d |
| 304 | )| |
| 305 | 5(?: |
| 306 | 3\d?| |
| 307 | 4\d| |
| 308 | [57]\d{1,2}| |
| 309 | 6\d{2}| |
| 310 | 8 |
| 311 | ) |
| 312 | )| |
| 313 | 71\d{2}| |
| 314 | 8(?: |
| 315 | [18]\d{2}| |
| 316 | 23\d{2}| |
| 317 | 54\d{2} |
| 318 | )| |
| 319 | 9(?: |
| 320 | [18]\d{2}| |
| 321 | 2[2-5]\d{2}| |
| 322 | 53\d{1,2} |
| 323 | ) |
| 324 | )\d{3}| |
| 325 | 5(?: |
| 326 | 02[03489]\d{2}| |
| 327 | 1\d{2}| |
| 328 | 2(?: |
| 329 | 1\d{2}| |
| 330 | 2(?: |
| 331 | 2(?: |
| 332 | \d{2} |
| 333 | )?| |
| 334 | [457]\d{2} |
| 335 | ) |
| 336 | )| |
| 337 | 3(?: |
| 338 | 1\d{2}| |
| 339 | 2(?: |
| 340 | [37](?: |
| 341 | \d{2} |
| 342 | )?| |
| 343 | [569]\d{2} |
| 344 | ) |
| 345 | )| |
| 346 | 4(?: |
| 347 | 1\d{2}| |
| 348 | 2[46]\d{2} |
| 349 | )| |
| 350 | 5(?: |
| 351 | 1\d{2}| |
| 352 | 26\d{1,2} |
| 353 | )| |
| 354 | 6(?: |
| 355 | [18]\d{2}| |
| 356 | 2| |
| 357 | 53\d{2} |
| 358 | )| |
| 359 | 7(?: |
| 360 | 1| |
| 361 | 24 |
| 362 | )\d{2}| |
| 363 | 8(?: |
| 364 | 1| |
| 365 | 26 |
| 366 | )\d{2}| |
| 367 | 91\d{2} |
| 368 | )\d{3}| |
| 369 | 6(?: |
| 370 | 0(?: |
| 371 | 1\d{2}| |
| 372 | 2(?: |
| 373 | 3\d{2}| |
| 374 | 4\d{1,2} |
| 375 | ) |
| 376 | )| |
| 377 | 2(?: |
| 378 | 2[2-5]\d{2}| |
| 379 | 5(?: |
| 380 | [3-5]\d{2}| |
| 381 | 7 |
| 382 | )| |
| 383 | 8\d{2} |
| 384 | )| |
| 385 | 3(?: |
| 386 | 1| |
| 387 | 2[3478] |
| 388 | )\d{2}| |
| 389 | 4(?: |
| 390 | 1| |
| 391 | 2[34] |
| 392 | )\d{2}| |
| 393 | 5(?: |
| 394 | 1| |
| 395 | 2[47] |
| 396 | )\d{2}| |
| 397 | 6(?: |
| 398 | [18]\d{2}| |
| 399 | 6(?: |
| 400 | 2(?: |
| 401 | 2\d| |
| 402 | [34]\d{2} |
| 403 | )| |
| 404 | 5(?: |
| 405 | [24]\d{2}| |
| 406 | 3\d| |
| 407 | 5\d{1,2} |
| 408 | ) |
| 409 | ) |
| 410 | )| |
| 411 | 72[2-5]\d{2}| |
| 412 | 8(?: |
| 413 | 1\d{2}| |
| 414 | 2[2-5]\d{2} |
| 415 | )| |
| 416 | 9(?: |
| 417 | 1\d{2}| |
| 418 | 2[2-6]\d{2} |
| 419 | ) |
| 420 | )\d{3}| |
| 421 | 7(?: |
| 422 | (?: |
| 423 | 02| |
| 424 | [3-589]1| |
| 425 | 6[12]| |
| 426 | 72[24] |
| 427 | )\d{2}| |
| 428 | 21\d{3}| |
| 429 | 32 |
| 430 | )\d{3}| |
| 431 | 8(?: |
| 432 | (?: |
| 433 | 4[12]| |
| 434 | [5-7]2| |
| 435 | 1\d? |
| 436 | )| |
| 437 | (?: |
| 438 | 0| |
| 439 | 3[12]| |
| 440 | [5-7]1| |
| 441 | 217 |
| 442 | )\d |
| 443 | )\d{4}| |
| 444 | 9(?: |
| 445 | [35]1| |
| 446 | (?: |
| 447 | [024]2| |
| 448 | 81 |
| 449 | )\d| |
| 450 | (?: |
| 451 | 1| |
| 452 | [24]1 |
| 453 | )\d{2} |
| 454 | )\d{3} |
| 455 | "#, |
| 456 | ) |
| 457 | .build() |
| 458 | .unwrap(); |
| 459 | } |