Chih-Hung Hsieh | 048fc04 | 2020-04-16 10:44:22 -0700 | [diff] [blame] | 1 | /*! |
| 2 | This module provides a regular expression printer for `Ast`. |
| 3 | */ |
| 4 | |
| 5 | use std::fmt; |
| 6 | |
| 7 | use ast::visitor::{self, Visitor}; |
| 8 | use ast::{self, Ast}; |
| 9 | |
| 10 | /// A builder for constructing a printer. |
| 11 | /// |
| 12 | /// Note that since a printer doesn't have any configuration knobs, this type |
| 13 | /// remains unexported. |
| 14 | #[derive(Clone, Debug)] |
| 15 | struct PrinterBuilder { |
| 16 | _priv: (), |
| 17 | } |
| 18 | |
| 19 | impl Default for PrinterBuilder { |
| 20 | fn default() -> PrinterBuilder { |
| 21 | PrinterBuilder::new() |
| 22 | } |
| 23 | } |
| 24 | |
| 25 | impl PrinterBuilder { |
| 26 | fn new() -> PrinterBuilder { |
| 27 | PrinterBuilder { _priv: () } |
| 28 | } |
| 29 | |
| 30 | fn build(&self) -> Printer { |
| 31 | Printer { _priv: () } |
| 32 | } |
| 33 | } |
| 34 | |
| 35 | /// A printer for a regular expression abstract syntax tree. |
| 36 | /// |
| 37 | /// A printer converts an abstract syntax tree (AST) to a regular expression |
| 38 | /// pattern string. This particular printer uses constant stack space and heap |
| 39 | /// space proportional to the size of the AST. |
| 40 | /// |
| 41 | /// This printer will not necessarily preserve the original formatting of the |
| 42 | /// regular expression pattern string. For example, all whitespace and comments |
| 43 | /// are ignored. |
| 44 | #[derive(Debug)] |
| 45 | pub struct Printer { |
| 46 | _priv: (), |
| 47 | } |
| 48 | |
| 49 | impl Printer { |
| 50 | /// Create a new printer. |
| 51 | pub fn new() -> Printer { |
| 52 | PrinterBuilder::new().build() |
| 53 | } |
| 54 | |
| 55 | /// Print the given `Ast` to the given writer. The writer must implement |
| 56 | /// `fmt::Write`. Typical implementations of `fmt::Write` that can be used |
| 57 | /// here are a `fmt::Formatter` (which is available in `fmt::Display` |
| 58 | /// implementations) or a `&mut String`. |
| 59 | pub fn print<W: fmt::Write>(&mut self, ast: &Ast, wtr: W) -> fmt::Result { |
| 60 | visitor::visit(ast, Writer { printer: self, wtr: wtr }) |
| 61 | } |
| 62 | } |
| 63 | |
| 64 | #[derive(Debug)] |
| 65 | struct Writer<'p, W> { |
| 66 | printer: &'p mut Printer, |
| 67 | wtr: W, |
| 68 | } |
| 69 | |
| 70 | impl<'p, W: fmt::Write> Visitor for Writer<'p, W> { |
| 71 | type Output = (); |
| 72 | type Err = fmt::Error; |
| 73 | |
| 74 | fn finish(self) -> fmt::Result { |
| 75 | Ok(()) |
| 76 | } |
| 77 | |
| 78 | fn visit_pre(&mut self, ast: &Ast) -> fmt::Result { |
| 79 | match *ast { |
| 80 | Ast::Group(ref x) => self.fmt_group_pre(x), |
| 81 | Ast::Class(ast::Class::Bracketed(ref x)) => { |
| 82 | self.fmt_class_bracketed_pre(x) |
| 83 | } |
| 84 | _ => Ok(()), |
| 85 | } |
| 86 | } |
| 87 | |
| 88 | fn visit_post(&mut self, ast: &Ast) -> fmt::Result { |
| 89 | use ast::Class; |
| 90 | |
| 91 | match *ast { |
| 92 | Ast::Empty(_) => Ok(()), |
| 93 | Ast::Flags(ref x) => self.fmt_set_flags(x), |
| 94 | Ast::Literal(ref x) => self.fmt_literal(x), |
| 95 | Ast::Dot(_) => self.wtr.write_str("."), |
| 96 | Ast::Assertion(ref x) => self.fmt_assertion(x), |
| 97 | Ast::Class(Class::Perl(ref x)) => self.fmt_class_perl(x), |
| 98 | Ast::Class(Class::Unicode(ref x)) => self.fmt_class_unicode(x), |
| 99 | Ast::Class(Class::Bracketed(ref x)) => { |
| 100 | self.fmt_class_bracketed_post(x) |
| 101 | } |
| 102 | Ast::Repetition(ref x) => self.fmt_repetition(x), |
| 103 | Ast::Group(ref x) => self.fmt_group_post(x), |
| 104 | Ast::Alternation(_) => Ok(()), |
| 105 | Ast::Concat(_) => Ok(()), |
| 106 | } |
| 107 | } |
| 108 | |
| 109 | fn visit_alternation_in(&mut self) -> fmt::Result { |
| 110 | self.wtr.write_str("|") |
| 111 | } |
| 112 | |
| 113 | fn visit_class_set_item_pre( |
| 114 | &mut self, |
| 115 | ast: &ast::ClassSetItem, |
| 116 | ) -> Result<(), Self::Err> { |
| 117 | match *ast { |
| 118 | ast::ClassSetItem::Bracketed(ref x) => { |
| 119 | self.fmt_class_bracketed_pre(x) |
| 120 | } |
| 121 | _ => Ok(()), |
| 122 | } |
| 123 | } |
| 124 | |
| 125 | fn visit_class_set_item_post( |
| 126 | &mut self, |
| 127 | ast: &ast::ClassSetItem, |
| 128 | ) -> Result<(), Self::Err> { |
| 129 | use ast::ClassSetItem::*; |
| 130 | |
| 131 | match *ast { |
| 132 | Empty(_) => Ok(()), |
| 133 | Literal(ref x) => self.fmt_literal(x), |
| 134 | Range(ref x) => { |
| 135 | self.fmt_literal(&x.start)?; |
| 136 | self.wtr.write_str("-")?; |
| 137 | self.fmt_literal(&x.end)?; |
| 138 | Ok(()) |
| 139 | } |
| 140 | Ascii(ref x) => self.fmt_class_ascii(x), |
| 141 | Unicode(ref x) => self.fmt_class_unicode(x), |
| 142 | Perl(ref x) => self.fmt_class_perl(x), |
| 143 | Bracketed(ref x) => self.fmt_class_bracketed_post(x), |
| 144 | Union(_) => Ok(()), |
| 145 | } |
| 146 | } |
| 147 | |
| 148 | fn visit_class_set_binary_op_in( |
| 149 | &mut self, |
| 150 | ast: &ast::ClassSetBinaryOp, |
| 151 | ) -> Result<(), Self::Err> { |
| 152 | self.fmt_class_set_binary_op_kind(&ast.kind) |
| 153 | } |
| 154 | } |
| 155 | |
| 156 | impl<'p, W: fmt::Write> Writer<'p, W> { |
| 157 | fn fmt_group_pre(&mut self, ast: &ast::Group) -> fmt::Result { |
| 158 | use ast::GroupKind::*; |
| 159 | match ast.kind { |
| 160 | CaptureIndex(_) => self.wtr.write_str("("), |
| 161 | CaptureName(ref x) => { |
| 162 | self.wtr.write_str("(?P<")?; |
| 163 | self.wtr.write_str(&x.name)?; |
| 164 | self.wtr.write_str(">")?; |
| 165 | Ok(()) |
| 166 | } |
| 167 | NonCapturing(ref flags) => { |
| 168 | self.wtr.write_str("(?")?; |
| 169 | self.fmt_flags(flags)?; |
| 170 | self.wtr.write_str(":")?; |
| 171 | Ok(()) |
| 172 | } |
| 173 | } |
| 174 | } |
| 175 | |
| 176 | fn fmt_group_post(&mut self, _ast: &ast::Group) -> fmt::Result { |
| 177 | self.wtr.write_str(")") |
| 178 | } |
| 179 | |
| 180 | fn fmt_repetition(&mut self, ast: &ast::Repetition) -> fmt::Result { |
| 181 | use ast::RepetitionKind::*; |
| 182 | match ast.op.kind { |
| 183 | ZeroOrOne if ast.greedy => self.wtr.write_str("?"), |
| 184 | ZeroOrOne => self.wtr.write_str("??"), |
| 185 | ZeroOrMore if ast.greedy => self.wtr.write_str("*"), |
| 186 | ZeroOrMore => self.wtr.write_str("*?"), |
| 187 | OneOrMore if ast.greedy => self.wtr.write_str("+"), |
| 188 | OneOrMore => self.wtr.write_str("+?"), |
| 189 | Range(ref x) => { |
| 190 | self.fmt_repetition_range(x)?; |
| 191 | if !ast.greedy { |
| 192 | self.wtr.write_str("?")?; |
| 193 | } |
| 194 | Ok(()) |
| 195 | } |
| 196 | } |
| 197 | } |
| 198 | |
| 199 | fn fmt_repetition_range( |
| 200 | &mut self, |
| 201 | ast: &ast::RepetitionRange, |
| 202 | ) -> fmt::Result { |
| 203 | use ast::RepetitionRange::*; |
| 204 | match *ast { |
| 205 | Exactly(x) => write!(self.wtr, "{{{}}}", x), |
| 206 | AtLeast(x) => write!(self.wtr, "{{{},}}", x), |
| 207 | Bounded(x, y) => write!(self.wtr, "{{{},{}}}", x, y), |
| 208 | } |
| 209 | } |
| 210 | |
| 211 | fn fmt_literal(&mut self, ast: &ast::Literal) -> fmt::Result { |
| 212 | use ast::LiteralKind::*; |
| 213 | |
| 214 | match ast.kind { |
| 215 | Verbatim => self.wtr.write_char(ast.c), |
| 216 | Punctuation => write!(self.wtr, r"\{}", ast.c), |
| 217 | Octal => write!(self.wtr, r"\{:o}", ast.c as u32), |
| 218 | HexFixed(ast::HexLiteralKind::X) => { |
| 219 | write!(self.wtr, r"\x{:02X}", ast.c as u32) |
| 220 | } |
| 221 | HexFixed(ast::HexLiteralKind::UnicodeShort) => { |
| 222 | write!(self.wtr, r"\u{:04X}", ast.c as u32) |
| 223 | } |
| 224 | HexFixed(ast::HexLiteralKind::UnicodeLong) => { |
| 225 | write!(self.wtr, r"\U{:08X}", ast.c as u32) |
| 226 | } |
| 227 | HexBrace(ast::HexLiteralKind::X) => { |
| 228 | write!(self.wtr, r"\x{{{:X}}}", ast.c as u32) |
| 229 | } |
| 230 | HexBrace(ast::HexLiteralKind::UnicodeShort) => { |
| 231 | write!(self.wtr, r"\u{{{:X}}}", ast.c as u32) |
| 232 | } |
| 233 | HexBrace(ast::HexLiteralKind::UnicodeLong) => { |
| 234 | write!(self.wtr, r"\U{{{:X}}}", ast.c as u32) |
| 235 | } |
| 236 | Special(ast::SpecialLiteralKind::Bell) => { |
| 237 | self.wtr.write_str(r"\a") |
| 238 | } |
| 239 | Special(ast::SpecialLiteralKind::FormFeed) => { |
| 240 | self.wtr.write_str(r"\f") |
| 241 | } |
| 242 | Special(ast::SpecialLiteralKind::Tab) => self.wtr.write_str(r"\t"), |
| 243 | Special(ast::SpecialLiteralKind::LineFeed) => { |
| 244 | self.wtr.write_str(r"\n") |
| 245 | } |
| 246 | Special(ast::SpecialLiteralKind::CarriageReturn) => { |
| 247 | self.wtr.write_str(r"\r") |
| 248 | } |
| 249 | Special(ast::SpecialLiteralKind::VerticalTab) => { |
| 250 | self.wtr.write_str(r"\v") |
| 251 | } |
| 252 | Special(ast::SpecialLiteralKind::Space) => { |
| 253 | self.wtr.write_str(r"\ ") |
| 254 | } |
| 255 | } |
| 256 | } |
| 257 | |
| 258 | fn fmt_assertion(&mut self, ast: &ast::Assertion) -> fmt::Result { |
| 259 | use ast::AssertionKind::*; |
| 260 | match ast.kind { |
| 261 | StartLine => self.wtr.write_str("^"), |
| 262 | EndLine => self.wtr.write_str("$"), |
| 263 | StartText => self.wtr.write_str(r"\A"), |
| 264 | EndText => self.wtr.write_str(r"\z"), |
| 265 | WordBoundary => self.wtr.write_str(r"\b"), |
| 266 | NotWordBoundary => self.wtr.write_str(r"\B"), |
| 267 | } |
| 268 | } |
| 269 | |
| 270 | fn fmt_set_flags(&mut self, ast: &ast::SetFlags) -> fmt::Result { |
| 271 | self.wtr.write_str("(?")?; |
| 272 | self.fmt_flags(&ast.flags)?; |
| 273 | self.wtr.write_str(")")?; |
| 274 | Ok(()) |
| 275 | } |
| 276 | |
| 277 | fn fmt_flags(&mut self, ast: &ast::Flags) -> fmt::Result { |
| 278 | use ast::{Flag, FlagsItemKind}; |
| 279 | |
| 280 | for item in &ast.items { |
| 281 | match item.kind { |
| 282 | FlagsItemKind::Negation => self.wtr.write_str("-"), |
| 283 | FlagsItemKind::Flag(ref flag) => match *flag { |
| 284 | Flag::CaseInsensitive => self.wtr.write_str("i"), |
| 285 | Flag::MultiLine => self.wtr.write_str("m"), |
| 286 | Flag::DotMatchesNewLine => self.wtr.write_str("s"), |
| 287 | Flag::SwapGreed => self.wtr.write_str("U"), |
| 288 | Flag::Unicode => self.wtr.write_str("u"), |
| 289 | Flag::IgnoreWhitespace => self.wtr.write_str("x"), |
| 290 | }, |
| 291 | }?; |
| 292 | } |
| 293 | Ok(()) |
| 294 | } |
| 295 | |
| 296 | fn fmt_class_bracketed_pre( |
| 297 | &mut self, |
| 298 | ast: &ast::ClassBracketed, |
| 299 | ) -> fmt::Result { |
| 300 | if ast.negated { |
| 301 | self.wtr.write_str("[^") |
| 302 | } else { |
| 303 | self.wtr.write_str("[") |
| 304 | } |
| 305 | } |
| 306 | |
| 307 | fn fmt_class_bracketed_post( |
| 308 | &mut self, |
| 309 | _ast: &ast::ClassBracketed, |
| 310 | ) -> fmt::Result { |
| 311 | self.wtr.write_str("]") |
| 312 | } |
| 313 | |
| 314 | fn fmt_class_set_binary_op_kind( |
| 315 | &mut self, |
| 316 | ast: &ast::ClassSetBinaryOpKind, |
| 317 | ) -> fmt::Result { |
| 318 | use ast::ClassSetBinaryOpKind::*; |
| 319 | match *ast { |
| 320 | Intersection => self.wtr.write_str("&&"), |
| 321 | Difference => self.wtr.write_str("--"), |
| 322 | SymmetricDifference => self.wtr.write_str("~~"), |
| 323 | } |
| 324 | } |
| 325 | |
| 326 | fn fmt_class_perl(&mut self, ast: &ast::ClassPerl) -> fmt::Result { |
| 327 | use ast::ClassPerlKind::*; |
| 328 | match ast.kind { |
| 329 | Digit if ast.negated => self.wtr.write_str(r"\D"), |
| 330 | Digit => self.wtr.write_str(r"\d"), |
| 331 | Space if ast.negated => self.wtr.write_str(r"\S"), |
| 332 | Space => self.wtr.write_str(r"\s"), |
| 333 | Word if ast.negated => self.wtr.write_str(r"\W"), |
| 334 | Word => self.wtr.write_str(r"\w"), |
| 335 | } |
| 336 | } |
| 337 | |
| 338 | fn fmt_class_ascii(&mut self, ast: &ast::ClassAscii) -> fmt::Result { |
| 339 | use ast::ClassAsciiKind::*; |
| 340 | match ast.kind { |
| 341 | Alnum if ast.negated => self.wtr.write_str("[:^alnum:]"), |
| 342 | Alnum => self.wtr.write_str("[:alnum:]"), |
| 343 | Alpha if ast.negated => self.wtr.write_str("[:^alpha:]"), |
| 344 | Alpha => self.wtr.write_str("[:alpha:]"), |
| 345 | Ascii if ast.negated => self.wtr.write_str("[:^ascii:]"), |
| 346 | Ascii => self.wtr.write_str("[:ascii:]"), |
| 347 | Blank if ast.negated => self.wtr.write_str("[:^blank:]"), |
| 348 | Blank => self.wtr.write_str("[:blank:]"), |
| 349 | Cntrl if ast.negated => self.wtr.write_str("[:^cntrl:]"), |
| 350 | Cntrl => self.wtr.write_str("[:cntrl:]"), |
| 351 | Digit if ast.negated => self.wtr.write_str("[:^digit:]"), |
| 352 | Digit => self.wtr.write_str("[:digit:]"), |
| 353 | Graph if ast.negated => self.wtr.write_str("[:^graph:]"), |
| 354 | Graph => self.wtr.write_str("[:graph:]"), |
| 355 | Lower if ast.negated => self.wtr.write_str("[:^lower:]"), |
| 356 | Lower => self.wtr.write_str("[:lower:]"), |
| 357 | Print if ast.negated => self.wtr.write_str("[:^print:]"), |
| 358 | Print => self.wtr.write_str("[:print:]"), |
| 359 | Punct if ast.negated => self.wtr.write_str("[:^punct:]"), |
| 360 | Punct => self.wtr.write_str("[:punct:]"), |
| 361 | Space if ast.negated => self.wtr.write_str("[:^space:]"), |
| 362 | Space => self.wtr.write_str("[:space:]"), |
| 363 | Upper if ast.negated => self.wtr.write_str("[:^upper:]"), |
| 364 | Upper => self.wtr.write_str("[:upper:]"), |
| 365 | Word if ast.negated => self.wtr.write_str("[:^word:]"), |
| 366 | Word => self.wtr.write_str("[:word:]"), |
| 367 | Xdigit if ast.negated => self.wtr.write_str("[:^xdigit:]"), |
| 368 | Xdigit => self.wtr.write_str("[:xdigit:]"), |
| 369 | } |
| 370 | } |
| 371 | |
| 372 | fn fmt_class_unicode(&mut self, ast: &ast::ClassUnicode) -> fmt::Result { |
| 373 | use ast::ClassUnicodeKind::*; |
| 374 | use ast::ClassUnicodeOpKind::*; |
| 375 | |
| 376 | if ast.negated { |
| 377 | self.wtr.write_str(r"\P")?; |
| 378 | } else { |
| 379 | self.wtr.write_str(r"\p")?; |
| 380 | } |
| 381 | match ast.kind { |
| 382 | OneLetter(c) => self.wtr.write_char(c), |
| 383 | Named(ref x) => write!(self.wtr, "{{{}}}", x), |
| 384 | NamedValue { op: Equal, ref name, ref value } => { |
| 385 | write!(self.wtr, "{{{}={}}}", name, value) |
| 386 | } |
| 387 | NamedValue { op: Colon, ref name, ref value } => { |
| 388 | write!(self.wtr, "{{{}:{}}}", name, value) |
| 389 | } |
| 390 | NamedValue { op: NotEqual, ref name, ref value } => { |
| 391 | write!(self.wtr, "{{{}!={}}}", name, value) |
| 392 | } |
| 393 | } |
| 394 | } |
| 395 | } |
| 396 | |
| 397 | #[cfg(test)] |
| 398 | mod tests { |
| 399 | use super::Printer; |
| 400 | use ast::parse::ParserBuilder; |
| 401 | |
| 402 | fn roundtrip(given: &str) { |
| 403 | roundtrip_with(|b| b, given); |
| 404 | } |
| 405 | |
| 406 | fn roundtrip_with<F>(mut f: F, given: &str) |
| 407 | where |
| 408 | F: FnMut(&mut ParserBuilder) -> &mut ParserBuilder, |
| 409 | { |
| 410 | let mut builder = ParserBuilder::new(); |
| 411 | f(&mut builder); |
| 412 | let ast = builder.build().parse(given).unwrap(); |
| 413 | |
| 414 | let mut printer = Printer::new(); |
| 415 | let mut dst = String::new(); |
| 416 | printer.print(&ast, &mut dst).unwrap(); |
| 417 | assert_eq!(given, dst); |
| 418 | } |
| 419 | |
| 420 | #[test] |
| 421 | fn print_literal() { |
| 422 | roundtrip("a"); |
| 423 | roundtrip(r"\["); |
| 424 | roundtrip_with(|b| b.octal(true), r"\141"); |
| 425 | roundtrip(r"\x61"); |
| 426 | roundtrip(r"\x7F"); |
| 427 | roundtrip(r"\u0061"); |
| 428 | roundtrip(r"\U00000061"); |
| 429 | roundtrip(r"\x{61}"); |
| 430 | roundtrip(r"\x{7F}"); |
| 431 | roundtrip(r"\u{61}"); |
| 432 | roundtrip(r"\U{61}"); |
| 433 | |
| 434 | roundtrip(r"\a"); |
| 435 | roundtrip(r"\f"); |
| 436 | roundtrip(r"\t"); |
| 437 | roundtrip(r"\n"); |
| 438 | roundtrip(r"\r"); |
| 439 | roundtrip(r"\v"); |
| 440 | roundtrip(r"(?x)\ "); |
| 441 | } |
| 442 | |
| 443 | #[test] |
| 444 | fn print_dot() { |
| 445 | roundtrip("."); |
| 446 | } |
| 447 | |
| 448 | #[test] |
| 449 | fn print_concat() { |
| 450 | roundtrip("ab"); |
| 451 | roundtrip("abcde"); |
| 452 | roundtrip("a(bcd)ef"); |
| 453 | } |
| 454 | |
| 455 | #[test] |
| 456 | fn print_alternation() { |
| 457 | roundtrip("a|b"); |
| 458 | roundtrip("a|b|c|d|e"); |
| 459 | roundtrip("|a|b|c|d|e"); |
| 460 | roundtrip("|a|b|c|d|e|"); |
| 461 | roundtrip("a(b|c|d)|e|f"); |
| 462 | } |
| 463 | |
| 464 | #[test] |
| 465 | fn print_assertion() { |
| 466 | roundtrip(r"^"); |
| 467 | roundtrip(r"$"); |
| 468 | roundtrip(r"\A"); |
| 469 | roundtrip(r"\z"); |
| 470 | roundtrip(r"\b"); |
| 471 | roundtrip(r"\B"); |
| 472 | } |
| 473 | |
| 474 | #[test] |
| 475 | fn print_repetition() { |
| 476 | roundtrip("a?"); |
| 477 | roundtrip("a??"); |
| 478 | roundtrip("a*"); |
| 479 | roundtrip("a*?"); |
| 480 | roundtrip("a+"); |
| 481 | roundtrip("a+?"); |
| 482 | roundtrip("a{5}"); |
| 483 | roundtrip("a{5}?"); |
| 484 | roundtrip("a{5,}"); |
| 485 | roundtrip("a{5,}?"); |
| 486 | roundtrip("a{5,10}"); |
| 487 | roundtrip("a{5,10}?"); |
| 488 | } |
| 489 | |
| 490 | #[test] |
| 491 | fn print_flags() { |
| 492 | roundtrip("(?i)"); |
| 493 | roundtrip("(?-i)"); |
| 494 | roundtrip("(?s-i)"); |
| 495 | roundtrip("(?-si)"); |
| 496 | roundtrip("(?siUmux)"); |
| 497 | } |
| 498 | |
| 499 | #[test] |
| 500 | fn print_group() { |
| 501 | roundtrip("(?i:a)"); |
| 502 | roundtrip("(?P<foo>a)"); |
| 503 | roundtrip("(a)"); |
| 504 | } |
| 505 | |
| 506 | #[test] |
| 507 | fn print_class() { |
| 508 | roundtrip(r"[abc]"); |
| 509 | roundtrip(r"[a-z]"); |
| 510 | roundtrip(r"[^a-z]"); |
| 511 | roundtrip(r"[a-z0-9]"); |
| 512 | roundtrip(r"[-a-z0-9]"); |
| 513 | roundtrip(r"[-a-z0-9]"); |
| 514 | roundtrip(r"[a-z0-9---]"); |
| 515 | roundtrip(r"[a-z&&m-n]"); |
| 516 | roundtrip(r"[[a-z&&m-n]]"); |
| 517 | roundtrip(r"[a-z--m-n]"); |
| 518 | roundtrip(r"[a-z~~m-n]"); |
| 519 | roundtrip(r"[a-z[0-9]]"); |
| 520 | roundtrip(r"[a-z[^0-9]]"); |
| 521 | |
| 522 | roundtrip(r"\d"); |
| 523 | roundtrip(r"\D"); |
| 524 | roundtrip(r"\s"); |
| 525 | roundtrip(r"\S"); |
| 526 | roundtrip(r"\w"); |
| 527 | roundtrip(r"\W"); |
| 528 | |
| 529 | roundtrip(r"[[:alnum:]]"); |
| 530 | roundtrip(r"[[:^alnum:]]"); |
| 531 | roundtrip(r"[[:alpha:]]"); |
| 532 | roundtrip(r"[[:^alpha:]]"); |
| 533 | roundtrip(r"[[:ascii:]]"); |
| 534 | roundtrip(r"[[:^ascii:]]"); |
| 535 | roundtrip(r"[[:blank:]]"); |
| 536 | roundtrip(r"[[:^blank:]]"); |
| 537 | roundtrip(r"[[:cntrl:]]"); |
| 538 | roundtrip(r"[[:^cntrl:]]"); |
| 539 | roundtrip(r"[[:digit:]]"); |
| 540 | roundtrip(r"[[:^digit:]]"); |
| 541 | roundtrip(r"[[:graph:]]"); |
| 542 | roundtrip(r"[[:^graph:]]"); |
| 543 | roundtrip(r"[[:lower:]]"); |
| 544 | roundtrip(r"[[:^lower:]]"); |
| 545 | roundtrip(r"[[:print:]]"); |
| 546 | roundtrip(r"[[:^print:]]"); |
| 547 | roundtrip(r"[[:punct:]]"); |
| 548 | roundtrip(r"[[:^punct:]]"); |
| 549 | roundtrip(r"[[:space:]]"); |
| 550 | roundtrip(r"[[:^space:]]"); |
| 551 | roundtrip(r"[[:upper:]]"); |
| 552 | roundtrip(r"[[:^upper:]]"); |
| 553 | roundtrip(r"[[:word:]]"); |
| 554 | roundtrip(r"[[:^word:]]"); |
| 555 | roundtrip(r"[[:xdigit:]]"); |
| 556 | roundtrip(r"[[:^xdigit:]]"); |
| 557 | |
| 558 | roundtrip(r"\pL"); |
| 559 | roundtrip(r"\PL"); |
| 560 | roundtrip(r"\p{L}"); |
| 561 | roundtrip(r"\P{L}"); |
| 562 | roundtrip(r"\p{X=Y}"); |
| 563 | roundtrip(r"\P{X=Y}"); |
| 564 | roundtrip(r"\p{X:Y}"); |
| 565 | roundtrip(r"\P{X:Y}"); |
| 566 | roundtrip(r"\p{X!=Y}"); |
| 567 | roundtrip(r"\P{X!=Y}"); |
| 568 | } |
| 569 | } |