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| 1 | <?php |
| 2 | /** |
| 3 | * @file |
| 4 | * @license https://opensource.org/licenses/Apache-2.0 Apache-2.0 |
| 5 | */ |
| 6 | |
| 7 | namespace Wikimedia\CSS\Grammar; |
| 8 | |
| 9 | use Wikimedia\CSS\Objects\ComponentValueList; |
| 10 | use Wikimedia\CSS\Objects\Token; |
| 11 | use Wikimedia\CSS\Parser\Parser; |
| 12 | use Wikimedia\CSS\Sanitizer\PropertySanitizer; |
| 13 | |
| 14 | /** |
| 15 | * Factory for predefined Grammar matchers |
| 16 | * @note For security, the attr() and var() functions are not supported, |
| 17 | * although as a limited exception var() is allowed for color attributes |
| 18 | * in `::colorFuncs()`. |
| 19 | */ |
| 20 | class MatcherFactory { |
| 21 | /** @var MatcherFactory|null */ |
| 22 | private static $instance = null; |
| 23 | |
| 24 | /** @var (Matcher|Matcher[])[] Cache of constructed matchers */ |
| 25 | protected $cache = []; |
| 26 | |
| 27 | /** @var string[] length units */ |
| 28 | protected static $lengthUnits = [ |
| 29 | 'em', 'ex', 'ch', 'rem', 'vw', 'vh', 'vmin', 'vmax', |
| 30 | 'cm', 'mm', 'Q', 'in', 'pc', 'pt', 'px' |
| 31 | ]; |
| 32 | |
| 33 | /** @var string[] angle units */ |
| 34 | protected static $angleUnits = [ 'deg', 'grad', 'rad', 'turn' ]; |
| 35 | |
| 36 | /** @var string[] time units */ |
| 37 | protected static $timeUnits = [ 's', 'ms' ]; |
| 38 | |
| 39 | /** @var string[] frequency units */ |
| 40 | protected static $frequencyUnits = [ 'Hz', 'kHz' ]; |
| 41 | |
| 42 | /** |
| 43 | * Return a static instance of the factory |
| 44 | * @return MatcherFactory |
| 45 | */ |
| 46 | public static function singleton() { |
| 47 | if ( !self::$instance ) { |
| 48 | self::$instance = new self(); |
| 49 | } |
| 50 | return self::$instance; |
| 51 | } |
| 52 | |
| 53 | /** |
| 54 | * Matcher for optional whitespace |
| 55 | * @return Matcher |
| 56 | */ |
| 57 | public function optionalWhitespace() { |
| 58 | if ( !isset( $this->cache[__METHOD__] ) ) { |
| 59 | $this->cache[__METHOD__] = new WhitespaceMatcher( [ 'significant' => false ] ); |
| 60 | } |
| 61 | return $this->cache[__METHOD__]; |
| 62 | } |
| 63 | |
| 64 | /** |
| 65 | * Matcher for required whitespace |
| 66 | * @return Matcher |
| 67 | */ |
| 68 | public function significantWhitespace() { |
| 69 | if ( !isset( $this->cache[__METHOD__] ) ) { |
| 70 | $this->cache[__METHOD__] = new WhitespaceMatcher( [ 'significant' => true ] ); |
| 71 | } |
| 72 | return $this->cache[__METHOD__]; |
| 73 | } |
| 74 | |
| 75 | /** |
| 76 | * Matcher for a comma |
| 77 | * @return Matcher |
| 78 | */ |
| 79 | public function comma() { |
| 80 | if ( !isset( $this->cache[__METHOD__] ) ) { |
| 81 | $this->cache[__METHOD__] = new TokenMatcher( Token::T_COMMA ); |
| 82 | } |
| 83 | return $this->cache[__METHOD__]; |
| 84 | } |
| 85 | |
| 86 | /** |
| 87 | * Matcher for an arbitrary identifier |
| 88 | * @return Matcher |
| 89 | */ |
| 90 | public function ident() { |
| 91 | if ( !isset( $this->cache[__METHOD__] ) ) { |
| 92 | $this->cache[__METHOD__] = new TokenMatcher( Token::T_IDENT ); |
| 93 | } |
| 94 | return $this->cache[__METHOD__]; |
| 95 | } |
| 96 | |
| 97 | /** |
| 98 | * Matcher for a <custom-ident> |
| 99 | * |
| 100 | * Note this doesn't implement the semantic restriction about assigning |
| 101 | * meaning to various idents in a complex value, as CSS Sanitizer doesn't |
| 102 | * deal with semantics on that level. |
| 103 | * |
| 104 | * @see https://www.w3.org/TR/2019/CR-css-values-3-20190606/#identifier-value |
| 105 | * @param string[] $exclude Additional values to exclude, all-lowercase. |
| 106 | * @return Matcher |
| 107 | */ |
| 108 | public function customIdent( array $exclude = [] ) { |
| 109 | $exclude = array_merge( [ |
| 110 | // https://www.w3.org/TR/2019/CR-css-values-3-20190606/#common-keywords |
| 111 | 'initial', 'inherit', 'unset', 'default', |
| 112 | // https://www.w3.org/TR/2018/CR-css-cascade-4-20180828/#all-shorthand |
| 113 | 'revert' |
| 114 | ], $exclude ); |
| 115 | return new TokenMatcher( Token::T_IDENT, static function ( Token $t ) use ( $exclude ) { |
| 116 | return !in_array( strtolower( $t->value() ), $exclude, true ); |
| 117 | } ); |
| 118 | } |
| 119 | |
| 120 | /** |
| 121 | * Matcher for a string |
| 122 | * @see https://www.w3.org/TR/2019/CR-css-values-3-20190606/#strings |
| 123 | * @warning If the string will be used as a URL, use self::urlstring() instead. |
| 124 | * @return Matcher |
| 125 | */ |
| 126 | public function string() { |
| 127 | if ( !isset( $this->cache[__METHOD__] ) ) { |
| 128 | $this->cache[__METHOD__] = new TokenMatcher( Token::T_STRING ); |
| 129 | } |
| 130 | return $this->cache[__METHOD__]; |
| 131 | } |
| 132 | |
| 133 | /** |
| 134 | * Matcher for a string containing a URL |
| 135 | * @param string $type Type of resource referenced, e.g. "image" or "audio". |
| 136 | * Not used here, but might be used by a subclass to validate the URL more strictly. |
| 137 | * @return Matcher |
| 138 | */ |
| 139 | public function urlstring( $type ) { |
| 140 | return $this->string(); |
| 141 | } |
| 142 | |
| 143 | /** |
| 144 | * Matcher for a URL |
| 145 | * @see https://www.w3.org/TR/2019/CR-css-values-3-20190606/#urls |
| 146 | * @param string $type Type of resource referenced, e.g. "image" or "audio". |
| 147 | * Not used here, but might be used by a subclass to validate the URL more strictly. |
| 148 | * @return Matcher |
| 149 | */ |
| 150 | public function url( $type ) { |
| 151 | if ( !isset( $this->cache[__METHOD__] ) ) { |
| 152 | $this->cache[__METHOD__] = new UrlMatcher(); |
| 153 | } |
| 154 | return $this->cache[__METHOD__]; |
| 155 | } |
| 156 | |
| 157 | /** |
| 158 | * CSS-wide value keywords |
| 159 | * @see https://www.w3.org/TR/2019/CR-css-values-3-20190606/#common-keywords |
| 160 | * @return Matcher |
| 161 | */ |
| 162 | public function cssWideKeywords() { |
| 163 | if ( !isset( $this->cache[__METHOD__] ) ) { |
| 164 | $this->cache[__METHOD__] = new KeywordMatcher( [ |
| 165 | // https://www.w3.org/TR/2019/CR-css-values-3-20190606/#common-keywords |
| 166 | 'initial', 'inherit', 'unset', |
| 167 | // added by https://www.w3.org/TR/2018/CR-css-cascade-4-20180828/#all-shorthand |
| 168 | 'revert' |
| 169 | ] ); |
| 170 | } |
| 171 | return $this->cache[__METHOD__]; |
| 172 | } |
| 173 | |
| 174 | /** |
| 175 | * @see https://www.w3.org/TR/2019/CR-css-values-3-20190606/#calc-notation |
| 176 | * @param Matcher $typeMatcher Matcher for the type |
| 177 | * @param string $type Type being matched |
| 178 | * @return Matcher[] |
| 179 | */ |
| 180 | protected function calcInternal( Matcher $typeMatcher, $type ) { |
| 181 | if ( $type === 'integer' ) { |
| 182 | $num = $this->rawInteger(); |
| 183 | } else { |
| 184 | $num = $this->rawNumber(); |
| 185 | } |
| 186 | |
| 187 | $ows = $this->optionalWhitespace(); |
| 188 | $ws = $this->significantWhitespace(); |
| 189 | |
| 190 | // Definitions are recursive. This will be used by reference and later |
| 191 | // will be replaced. |
| 192 | $calcValue = new NothingMatcher(); |
| 193 | |
| 194 | if ( $type === 'integer' ) { |
| 195 | // Division will always resolve to a number, making the expression |
| 196 | // invalid, so don't allow it. |
| 197 | $calcProduct = new Juxtaposition( [ |
| 198 | &$calcValue, |
| 199 | Quantifier::star( new Juxtaposition( [ $ows, new DelimMatcher( '*' ), $ows, &$calcValue ] ) ) |
| 200 | ] ); |
| 201 | } elseif ( $typeMatcher === $this->rawNumber() ) { |
| 202 | $calcProduct = new Juxtaposition( [ |
| 203 | &$calcValue, |
| 204 | Quantifier::star( |
| 205 | new Juxtaposition( [ $ows, new DelimMatcher( [ '*', '/' ] ), $ows, &$calcValue ] ) |
| 206 | ), |
| 207 | ] ); |
| 208 | } else { |
| 209 | $calcNumValue = $this->calcInternal( $this->rawNumber(), 'number' )[1]; |
| 210 | $calcProduct = new Juxtaposition( [ |
| 211 | &$calcValue, |
| 212 | Quantifier::star( |
| 213 | new Alternative( [ |
| 214 | new Juxtaposition( [ $ows, new DelimMatcher( '*' ), $ows, &$calcValue ] ), |
| 215 | new Juxtaposition( [ $ows, new DelimMatcher( '/' ), $ows, $calcNumValue, ] ), |
| 216 | ] ) |
| 217 | ), |
| 218 | ] ); |
| 219 | } |
| 220 | |
| 221 | $calcSum = new Juxtaposition( [ |
| 222 | $ows, |
| 223 | $calcProduct, |
| 224 | Quantifier::star( new Juxtaposition( [ |
| 225 | $ws, new DelimMatcher( [ '+', '-' ] ), $ws, $calcProduct |
| 226 | ] ) ), |
| 227 | $ows, |
| 228 | ] ); |
| 229 | |
| 230 | $calcFunc = new FunctionMatcher( 'calc', $calcSum ); |
| 231 | |
| 232 | if ( $num === $typeMatcher ) { |
| 233 | $calcValue = new Alternative( [ |
| 234 | $typeMatcher, |
| 235 | new BlockMatcher( Token::T_LEFT_PAREN, $calcSum ), |
| 236 | $calcFunc, |
| 237 | ] ); |
| 238 | } else { |
| 239 | $calcValue = new Alternative( [ |
| 240 | $num, |
| 241 | $typeMatcher, |
| 242 | new BlockMatcher( Token::T_LEFT_PAREN, $calcSum ), |
| 243 | $calcFunc, |
| 244 | ] ); |
| 245 | } |
| 246 | |
| 247 | return [ |
| 248 | new Alternative( [ $typeMatcher, $calcFunc ] ), |
| 249 | $calcValue, |
| 250 | ]; |
| 251 | } |
| 252 | |
| 253 | /** |
| 254 | * Add calc() support to a basic type matcher |
| 255 | * @see https://www.w3.org/TR/2019/CR-css-values-3-20190606/#calc-notation |
| 256 | * @param Matcher $typeMatcher Matcher for the type |
| 257 | * @param string $type Type being matched |
| 258 | * @return Matcher |
| 259 | */ |
| 260 | public function calc( Matcher $typeMatcher, $type ) { |
| 261 | return $this->calcInternal( $typeMatcher, $type )[0]; |
| 262 | } |
| 263 | |
| 264 | /** |
| 265 | * Matcher for an integer value, without calc() |
| 266 | * @see https://www.w3.org/TR/2019/CR-css-values-3-20190606/#integers |
| 267 | * @return Matcher |
| 268 | */ |
| 269 | protected function rawInteger() { |
| 270 | if ( !isset( $this->cache[__METHOD__] ) ) { |
| 271 | $this->cache[__METHOD__] = new TokenMatcher( Token::T_NUMBER, static function ( Token $t ) { |
| 272 | // The spec says it must match /^[+-]\d+$/, but the tokenizer |
| 273 | // should have marked any other number token as a 'number' |
| 274 | // anyway so let's not bother checking. |
| 275 | return $t->typeFlag() === 'integer'; |
| 276 | } ); |
| 277 | } |
| 278 | return $this->cache[__METHOD__]; |
| 279 | } |
| 280 | |
| 281 | /** |
| 282 | * @return TokenMatcher |
| 283 | */ |
| 284 | public function colorHex(): TokenMatcher { |
| 285 | return new TokenMatcher( Token::T_HASH, static function ( Token $t ) { |
| 286 | return preg_match( '/^([0-9a-f]{3}|[0-9a-f]{6})$/i', $t->value() ); |
| 287 | } ); |
| 288 | } |
| 289 | |
| 290 | /** |
| 291 | * Matcher for an integer value |
| 292 | * @see https://www.w3.org/TR/2019/CR-css-values-3-20190606/#integers |
| 293 | * @return Matcher |
| 294 | */ |
| 295 | public function integer() { |
| 296 | if ( !isset( $this->cache[__METHOD__] ) ) { |
| 297 | $this->cache[__METHOD__] = $this->calc( $this->rawInteger(), 'integer' ); |
| 298 | } |
| 299 | return $this->cache[__METHOD__]; |
| 300 | } |
| 301 | |
| 302 | /** |
| 303 | * Matcher for a real number, without calc() |
| 304 | * @see https://www.w3.org/TR/2019/CR-css-values-3-20190606/#numbers |
| 305 | * @return Matcher |
| 306 | */ |
| 307 | public function rawNumber() { |
| 308 | if ( !isset( $this->cache[__METHOD__] ) ) { |
| 309 | $this->cache[__METHOD__] = new TokenMatcher( Token::T_NUMBER ); |
| 310 | } |
| 311 | return $this->cache[__METHOD__]; |
| 312 | } |
| 313 | |
| 314 | /** |
| 315 | * Matcher for a real number |
| 316 | * @see https://www.w3.org/TR/2019/CR-css-values-3-20190606/#numbers |
| 317 | * @return Matcher |
| 318 | */ |
| 319 | public function number() { |
| 320 | if ( !isset( $this->cache[__METHOD__] ) ) { |
| 321 | $this->cache[__METHOD__] = $this->calc( $this->rawNumber(), 'number' ); |
| 322 | } |
| 323 | return $this->cache[__METHOD__]; |
| 324 | } |
| 325 | |
| 326 | /** |
| 327 | * Matcher for a percentage value, without calc() |
| 328 | * @see https://www.w3.org/TR/2019/CR-css-values-3-20190606/#percentages |
| 329 | * @return Matcher |
| 330 | */ |
| 331 | public function rawPercentage() { |
| 332 | if ( !isset( $this->cache[__METHOD__] ) ) { |
| 333 | $this->cache[__METHOD__] = new TokenMatcher( Token::T_PERCENTAGE ); |
| 334 | } |
| 335 | return $this->cache[__METHOD__]; |
| 336 | } |
| 337 | |
| 338 | /** |
| 339 | * Matcher for a percentage value |
| 340 | * @see https://www.w3.org/TR/2019/CR-css-values-3-20190606/#percentages |
| 341 | * @return Matcher |
| 342 | */ |
| 343 | public function percentage() { |
| 344 | if ( !isset( $this->cache[__METHOD__] ) ) { |
| 345 | $this->cache[__METHOD__] = $this->calc( $this->rawPercentage(), 'percentage' ); |
| 346 | } |
| 347 | return $this->cache[__METHOD__]; |
| 348 | } |
| 349 | |
| 350 | /** |
| 351 | * Matcher for a length-percentage value |
| 352 | * @see https://www.w3.org/TR/2019/CR-css-values-3-20190606/#typedef-length-percentage |
| 353 | * @return Matcher |
| 354 | */ |
| 355 | public function lengthPercentage() { |
| 356 | if ( !isset( $this->cache[__METHOD__] ) ) { |
| 357 | $this->cache[__METHOD__] = $this->calc( |
| 358 | new Alternative( [ $this->rawLength(), $this->rawPercentage() ] ), |
| 359 | 'length' |
| 360 | ); |
| 361 | } |
| 362 | return $this->cache[__METHOD__]; |
| 363 | } |
| 364 | |
| 365 | /** |
| 366 | * Matcher for a frequency-percentage value |
| 367 | * @see https://www.w3.org/TR/2019/CR-css-values-3-20190606/#typedef-frequency-percentage |
| 368 | * @return Matcher |
| 369 | */ |
| 370 | public function frequencyPercentage() { |
| 371 | if ( !isset( $this->cache[__METHOD__] ) ) { |
| 372 | $this->cache[__METHOD__] = $this->calc( |
| 373 | new Alternative( [ $this->rawFrequency(), $this->rawPercentage() ] ), |
| 374 | 'frequency' |
| 375 | ); |
| 376 | } |
| 377 | return $this->cache[__METHOD__]; |
| 378 | } |
| 379 | |
| 380 | /** |
| 381 | * Matcher for an angle-percentage value |
| 382 | * @see https://www.w3.org/TR/2019/CR-css-values-3-20190606/#typedef-angle-percentage |
| 383 | * @return Matcher |
| 384 | */ |
| 385 | public function anglePercentage() { |
| 386 | if ( !isset( $this->cache[__METHOD__] ) ) { |
| 387 | $this->cache[__METHOD__] = $this->calc( |
| 388 | new Alternative( [ $this->rawAngle(), $this->rawPercentage() ] ), |
| 389 | 'angle' |
| 390 | ); |
| 391 | } |
| 392 | return $this->cache[__METHOD__]; |
| 393 | } |
| 394 | |
| 395 | /** |
| 396 | * Matcher for a time-percentage value |
| 397 | * @see https://www.w3.org/TR/2019/CR-css-values-3-20190606/#typedef-time-percentage |
| 398 | * @return Matcher |
| 399 | */ |
| 400 | public function timePercentage() { |
| 401 | if ( !isset( $this->cache[__METHOD__] ) ) { |
| 402 | $this->cache[__METHOD__] = $this->calc( |
| 403 | new Alternative( [ $this->rawTime(), $this->rawPercentage() ] ), |
| 404 | 'time' |
| 405 | ); |
| 406 | } |
| 407 | return $this->cache[__METHOD__]; |
| 408 | } |
| 409 | |
| 410 | /** |
| 411 | * Matcher for a number-percentage value |
| 412 | * @see https://www.w3.org/TR/2019/CR-css-values-3-20190606/#typedef-number-percentage |
| 413 | * @return Matcher |
| 414 | */ |
| 415 | public function numberPercentage() { |
| 416 | if ( !isset( $this->cache[__METHOD__] ) ) { |
| 417 | $this->cache[__METHOD__] = $this->calc( |
| 418 | new Alternative( [ $this->rawNumber(), $this->rawPercentage() ] ), |
| 419 | 'number' |
| 420 | ); |
| 421 | } |
| 422 | return $this->cache[__METHOD__]; |
| 423 | } |
| 424 | |
| 425 | /** |
| 426 | * Matcher for a dimension value |
| 427 | * @see https://www.w3.org/TR/2019/CR-css-values-3-20190606/#dimensions |
| 428 | * @return Matcher |
| 429 | */ |
| 430 | public function dimension() { |
| 431 | if ( !isset( $this->cache[__METHOD__] ) ) { |
| 432 | $this->cache[__METHOD__] = new TokenMatcher( Token::T_DIMENSION ); |
| 433 | } |
| 434 | return $this->cache[__METHOD__]; |
| 435 | } |
| 436 | |
| 437 | /** |
| 438 | * Matches the number 0 |
| 439 | * @return Matcher |
| 440 | */ |
| 441 | public function zero() { |
| 442 | if ( !isset( $this->cache[__METHOD__] ) ) { |
| 443 | $this->cache[__METHOD__] = new TokenMatcher( Token::T_NUMBER, static function ( Token $t ) { |
| 444 | return $t->value() === 0 || $t->value() === 0.0; |
| 445 | } ); |
| 446 | } |
| 447 | return $this->cache[__METHOD__]; |
| 448 | } |
| 449 | |
| 450 | /** |
| 451 | * Matcher for a length value, without calc() |
| 452 | * @see https://www.w3.org/TR/2019/CR-css-values-3-20190606/#lengths |
| 453 | * @return Matcher |
| 454 | */ |
| 455 | protected function rawLength() { |
| 456 | if ( !isset( $this->cache[__METHOD__] ) ) { |
| 457 | $unitsRe = '/^(' . implode( '|', self::$lengthUnits ) . ')$/i'; |
| 458 | |
| 459 | $this->cache[__METHOD__] = new Alternative( [ |
| 460 | $this->zero(), |
| 461 | new TokenMatcher( Token::T_DIMENSION, static function ( Token $t ) use ( $unitsRe ) { |
| 462 | return preg_match( $unitsRe, $t->unit() ); |
| 463 | } ), |
| 464 | ] ); |
| 465 | } |
| 466 | return $this->cache[__METHOD__]; |
| 467 | } |
| 468 | |
| 469 | /** |
| 470 | * Matcher for a length value |
| 471 | * @see https://www.w3.org/TR/2019/CR-css-values-3-20190606/#lengths |
| 472 | * @return Matcher |
| 473 | */ |
| 474 | public function length() { |
| 475 | if ( !isset( $this->cache[__METHOD__] ) ) { |
| 476 | $this->cache[__METHOD__] = $this->calc( $this->rawLength(), 'length' ); |
| 477 | } |
| 478 | return $this->cache[__METHOD__]; |
| 479 | } |
| 480 | |
| 481 | /** |
| 482 | * Matcher for an angle value, without calc() |
| 483 | * @see https://www.w3.org/TR/2019/CR-css-values-3-20190606/#angles |
| 484 | * @return Matcher |
| 485 | */ |
| 486 | protected function rawAngle() { |
| 487 | if ( !isset( $this->cache[__METHOD__] ) ) { |
| 488 | $unitsRe = '/^(' . implode( '|', self::$angleUnits ) . ')$/i'; |
| 489 | |
| 490 | $this->cache[__METHOD__] = new TokenMatcher( Token::T_DIMENSION, |
| 491 | static function ( Token $t ) use ( $unitsRe ) { |
| 492 | return preg_match( $unitsRe, $t->unit() ); |
| 493 | } |
| 494 | ); |
| 495 | } |
| 496 | return $this->cache[__METHOD__]; |
| 497 | } |
| 498 | |
| 499 | /** |
| 500 | * Matcher for an angle value |
| 501 | * @see https://www.w3.org/TR/2019/CR-css-values-3-20190606/#angles |
| 502 | * @return Matcher |
| 503 | */ |
| 504 | public function angle() { |
| 505 | if ( !isset( $this->cache[__METHOD__] ) ) { |
| 506 | $this->cache[__METHOD__] = $this->calc( $this->rawAngle(), 'angle' ); |
| 507 | } |
| 508 | return $this->cache[__METHOD__]; |
| 509 | } |
| 510 | |
| 511 | /** |
| 512 | * Matcher for a duration (time) value, without calc() |
| 513 | * @see https://www.w3.org/TR/2019/CR-css-values-3-20190606/#time |
| 514 | * @return Matcher |
| 515 | */ |
| 516 | protected function rawTime() { |
| 517 | if ( !isset( $this->cache[__METHOD__] ) ) { |
| 518 | $unitsRe = '/^(' . implode( '|', self::$timeUnits ) . ')$/i'; |
| 519 | |
| 520 | $this->cache[__METHOD__] = new TokenMatcher( Token::T_DIMENSION, |
| 521 | static function ( Token $t ) use ( $unitsRe ) { |
| 522 | return preg_match( $unitsRe, $t->unit() ); |
| 523 | } |
| 524 | ); |
| 525 | } |
| 526 | return $this->cache[__METHOD__]; |
| 527 | } |
| 528 | |
| 529 | /** |
| 530 | * Matcher for a duration (time) value |
| 531 | * @see https://www.w3.org/TR/2019/CR-css-values-3-20190606/#time |
| 532 | * @return Matcher |
| 533 | */ |
| 534 | public function time() { |
| 535 | if ( !isset( $this->cache[__METHOD__] ) ) { |
| 536 | $this->cache[__METHOD__] = $this->calc( $this->rawTime(), 'time' ); |
| 537 | } |
| 538 | return $this->cache[__METHOD__]; |
| 539 | } |
| 540 | |
| 541 | /** |
| 542 | * Matcher for a frequency value, without calc() |
| 543 | * @see https://www.w3.org/TR/2019/CR-css-values-3-20190606/#frequency |
| 544 | * @return Matcher |
| 545 | */ |
| 546 | protected function rawFrequency() { |
| 547 | if ( !isset( $this->cache[__METHOD__] ) ) { |
| 548 | $unitsRe = '/^(' . implode( '|', self::$frequencyUnits ) . ')$/i'; |
| 549 | |
| 550 | $this->cache[__METHOD__] = new TokenMatcher( Token::T_DIMENSION, |
| 551 | static function ( Token $t ) use ( $unitsRe ) { |
| 552 | return preg_match( $unitsRe, $t->unit() ); |
| 553 | } |
| 554 | ); |
| 555 | } |
| 556 | return $this->cache[__METHOD__]; |
| 557 | } |
| 558 | |
| 559 | /** |
| 560 | * Matcher for a frequency value |
| 561 | * @see https://www.w3.org/TR/2019/CR-css-values-3-20190606/#frequency |
| 562 | * @return Matcher |
| 563 | */ |
| 564 | public function frequency() { |
| 565 | if ( !isset( $this->cache[__METHOD__] ) ) { |
| 566 | $this->cache[__METHOD__] = $this->calc( $this->rawFrequency(), 'frequency' ); |
| 567 | } |
| 568 | return $this->cache[__METHOD__]; |
| 569 | } |
| 570 | |
| 571 | /** |
| 572 | * Matcher for a resolution value |
| 573 | * @see https://www.w3.org/TR/2019/CR-css-values-3-20190606/#resolution |
| 574 | * @return Matcher |
| 575 | */ |
| 576 | public function resolution() { |
| 577 | if ( !isset( $this->cache[__METHOD__] ) ) { |
| 578 | $this->cache[__METHOD__] = new TokenMatcher( Token::T_DIMENSION, static function ( Token $t ) { |
| 579 | return preg_match( '/^(dpi|dpcm|dppx)$/i', $t->unit() ); |
| 580 | } ); |
| 581 | } |
| 582 | return $this->cache[__METHOD__]; |
| 583 | } |
| 584 | |
| 585 | /** |
| 586 | * Matchers for color functions |
| 587 | * @return Matcher[] |
| 588 | */ |
| 589 | protected function colorFuncs() { |
| 590 | if ( !isset( $this->cache[__METHOD__] ) ) { |
| 591 | $i = $this->integer(); |
| 592 | $n = $this->number(); |
| 593 | $p = $this->percentage(); |
| 594 | $this->cache[__METHOD__] = [ |
| 595 | new FunctionMatcher( 'rgb', new Alternative( [ |
| 596 | Quantifier::hash( $i, 3, 3 ), |
| 597 | Quantifier::hash( $p, 3, 3 ), |
| 598 | ] ) ), |
| 599 | new FunctionMatcher( 'rgba', new Alternative( [ |
| 600 | new Juxtaposition( [ $i, $i, $i, $n ], true ), |
| 601 | new Juxtaposition( [ $p, $p, $p, $n ], true ), |
| 602 | ] ) ), |
| 603 | new FunctionMatcher( 'hsl', new Juxtaposition( [ $n, $p, $p ], true ) ), |
| 604 | new FunctionMatcher( 'hsla', new Juxtaposition( [ $n, $p, $p, $n ], true ) ), |
| 605 | ]; |
| 606 | } |
| 607 | return $this->cache[__METHOD__]; |
| 608 | } |
| 609 | |
| 610 | /** |
| 611 | * Matcher for a color value, *not* including a custom property reference. |
| 612 | * |
| 613 | * Because custom properties can lead to unexpected behavior (generally |
| 614 | * a bad thing for security) when concatenated together, this matcher |
| 615 | * should be used for CSS rules which allow value concatenation. |
| 616 | * For example, `border-color` allows up to 4 `var(...)` expressions to |
| 617 | * potentially be concatenated. |
| 618 | * |
| 619 | * @see https://www.w3.org/TR/css-variables-1/#custom-property |
| 620 | * @return Matcher |
| 621 | */ |
| 622 | public function safeColor() { |
| 623 | if ( !isset( $this->cache[__METHOD__] ) ) { |
| 624 | $this->cache[__METHOD__] = new Alternative( array_merge( [ |
| 625 | $this->colorWords(), |
| 626 | $this->colorHex(), |
| 627 | ], $this->colorFuncs() ) ); |
| 628 | } |
| 629 | return $this->cache[__METHOD__]; |
| 630 | } |
| 631 | |
| 632 | /** |
| 633 | * Matcher for a color value, including a possible custom property |
| 634 | * reference. |
| 635 | * |
| 636 | * @see https://www.w3.org/TR/2018/REC-css-color-3-20180619/#colorunits |
| 637 | * @return Matcher |
| 638 | */ |
| 639 | public function color() { |
| 640 | if ( !isset( $this->cache[__METHOD__] ) ) { |
| 641 | $this->cache[__METHOD__] = new Alternative( [ |
| 642 | $this->safeColor(), |
| 643 | new FunctionMatcher( 'var', new Juxtaposition( [ |
| 644 | new CustomPropertyMatcher(), |
| 645 | Quantifier::optional( new Alternative( [ |
| 646 | $this->colorWords(), |
| 647 | $this->colorHex(), |
| 648 | ] ) ), |
| 649 | ], true ) ), |
| 650 | ] ); |
| 651 | } |
| 652 | return $this->cache[__METHOD__]; |
| 653 | } |
| 654 | |
| 655 | /** |
| 656 | * Matcher for an image value |
| 657 | * @see https://www.w3.org/TR/2019/CR-css-images-3-20191010/#image-values |
| 658 | * @return Matcher |
| 659 | */ |
| 660 | public function image() { |
| 661 | if ( !isset( $this->cache[__METHOD__] ) ) { |
| 662 | // https://www.w3.org/TR/2019/CR-css-images-3-20191010/#gradients |
| 663 | $c = $this->comma(); |
| 664 | $colorStop = UnorderedGroup::allOf( [ |
| 665 | $this->color(), |
| 666 | Quantifier::optional( $this->lengthPercentage() ), |
| 667 | ] ); |
| 668 | $colorStopList = new Juxtaposition( [ |
| 669 | $colorStop, |
| 670 | Quantifier::hash( new Juxtaposition( [ |
| 671 | Quantifier::optional( $this->lengthPercentage() ), |
| 672 | $colorStop |
| 673 | ], true ) ), |
| 674 | ], true ); |
| 675 | $atPosition = new Juxtaposition( [ new KeywordMatcher( 'at' ), $this->position() ] ); |
| 676 | |
| 677 | $linearGradient = new Juxtaposition( [ |
| 678 | Quantifier::optional( new Juxtaposition( [ |
| 679 | new Alternative( [ |
| 680 | new Alternative( [ |
| 681 | $this->zero(), |
| 682 | $this->angle(), |
| 683 | ] ), |
| 684 | new Juxtaposition( [ new KeywordMatcher( 'to' ), UnorderedGroup::someOf( [ |
| 685 | new KeywordMatcher( [ 'left', 'right' ] ), |
| 686 | new KeywordMatcher( [ 'top', 'bottom' ] ), |
| 687 | ] ) ] ) |
| 688 | ] ), |
| 689 | $c |
| 690 | ] ) ), |
| 691 | $colorStopList, |
| 692 | ] ); |
| 693 | $radialGradient = new Juxtaposition( [ |
| 694 | Quantifier::optional( new Juxtaposition( [ |
| 695 | new Alternative( [ |
| 696 | new Juxtaposition( [ |
| 697 | new Alternative( [ |
| 698 | UnorderedGroup::someOf( [ new KeywordMatcher( 'circle' ), $this->length() ] ), |
| 699 | UnorderedGroup::someOf( [ |
| 700 | new KeywordMatcher( 'ellipse' ), |
| 701 | Quantifier::count( $this->lengthPercentage(), 2, 2 ) |
| 702 | ] ), |
| 703 | UnorderedGroup::someOf( [ |
| 704 | new KeywordMatcher( [ 'circle', 'ellipse' ] ), |
| 705 | new KeywordMatcher( [ |
| 706 | 'closest-corner', 'closest-side', 'farthest-corner', 'farthest-side', |
| 707 | ] ), |
| 708 | ] ), |
| 709 | ] ), |
| 710 | Quantifier::optional( $atPosition ), |
| 711 | ] ), |
| 712 | $atPosition |
| 713 | ] ), |
| 714 | $c |
| 715 | ] ) ), |
| 716 | $colorStopList, |
| 717 | ] ); |
| 718 | |
| 719 | // Putting it all together |
| 720 | $this->cache[__METHOD__] = new Alternative( [ |
| 721 | $this->url( 'image' ), |
| 722 | new FunctionMatcher( 'linear-gradient', $linearGradient ), |
| 723 | new FunctionMatcher( 'radial-gradient', $radialGradient ), |
| 724 | new FunctionMatcher( 'repeating-linear-gradient', $linearGradient ), |
| 725 | new FunctionMatcher( 'repeating-radial-gradient', $radialGradient ), |
| 726 | ] ); |
| 727 | } |
| 728 | return $this->cache[__METHOD__]; |
| 729 | } |
| 730 | |
| 731 | /** |
| 732 | * Matcher for a position value |
| 733 | * @see https://www.w3.org/TR/2019/CR-css-values-3-20190606/#typedef-position |
| 734 | * @return Matcher |
| 735 | */ |
| 736 | public function position() { |
| 737 | if ( !isset( $this->cache[__METHOD__] ) ) { |
| 738 | $lp = $this->lengthPercentage(); |
| 739 | $center = new KeywordMatcher( 'center' ); |
| 740 | $leftRight = new KeywordMatcher( [ 'left', 'right' ] ); |
| 741 | $topBottom = new KeywordMatcher( [ 'top', 'bottom' ] ); |
| 742 | |
| 743 | $this->cache[__METHOD__] = new Alternative( [ |
| 744 | UnorderedGroup::someOf( [ |
| 745 | new Alternative( [ $center, $leftRight ] ), |
| 746 | new Alternative( [ $center, $topBottom ] ), |
| 747 | ] ), |
| 748 | new Juxtaposition( [ |
| 749 | new Alternative( [ $center, $leftRight, $lp ] ), |
| 750 | Quantifier::optional( new Alternative( [ $center, $topBottom, $lp ] ) ), |
| 751 | ] ), |
| 752 | |
| 753 | UnorderedGroup::allOf( [ |
| 754 | new Juxtaposition( [ $leftRight, $lp ] ), |
| 755 | new Juxtaposition( [ $topBottom, $lp ] ), |
| 756 | ] ), |
| 757 | ] ); |
| 758 | } |
| 759 | return $this->cache[__METHOD__]; |
| 760 | } |
| 761 | |
| 762 | /** |
| 763 | * Matcher for a bg-position value |
| 764 | * @see https://www.w3.org/TR/2017/CR-css-backgrounds-3-20171017/#typedef-bg-position |
| 765 | * @return Matcher |
| 766 | */ |
| 767 | public function bgPosition() { |
| 768 | if ( !isset( $this->cache[__METHOD__] ) ) { |
| 769 | $lp = $this->lengthPercentage(); |
| 770 | $olp = Quantifier::optional( $lp ); |
| 771 | $center = new KeywordMatcher( 'center' ); |
| 772 | $leftRight = new KeywordMatcher( [ 'left', 'right' ] ); |
| 773 | $topBottom = new KeywordMatcher( [ 'top', 'bottom' ] ); |
| 774 | |
| 775 | $this->cache[__METHOD__] = new Alternative( [ |
| 776 | new Alternative( [ $center, $leftRight, $topBottom, $lp ] ), |
| 777 | new Juxtaposition( [ |
| 778 | new Alternative( [ $center, $leftRight, $lp ] ), |
| 779 | new Alternative( [ $center, $topBottom, $lp ] ), |
| 780 | ] ), |
| 781 | UnorderedGroup::allOf( [ |
| 782 | new Alternative( [ $center, new Juxtaposition( [ $leftRight, $olp ] ) ] ), |
| 783 | new Alternative( [ $center, new Juxtaposition( [ $topBottom, $olp ] ) ] ), |
| 784 | ] ), |
| 785 | ] ); |
| 786 | } |
| 787 | return $this->cache[__METHOD__]; |
| 788 | } |
| 789 | |
| 790 | /** |
| 791 | * Matcher for a CSS media query |
| 792 | * @see https://www.w3.org/TR/2017/CR-mediaqueries-4-20170905/#mq-syntax |
| 793 | * @param bool $strict Only allow defined query types |
| 794 | * @return Matcher |
| 795 | */ |
| 796 | public function cssMediaQuery( $strict = true ) { |
| 797 | $key = __METHOD__ . ':' . ( $strict ? 'strict' : 'unstrict' ); |
| 798 | if ( !isset( $this->cache[$key] ) ) { |
| 799 | if ( $strict ) { |
| 800 | $generalEnclosed = new NothingMatcher(); |
| 801 | |
| 802 | $mediaType = new KeywordMatcher( [ |
| 803 | 'all', 'print', 'screen', 'speech', |
| 804 | // deprecated |
| 805 | 'tty', 'tv', 'projection', 'handheld', 'braille', 'embossed', 'aural' |
| 806 | ] ); |
| 807 | |
| 808 | $rangeFeatures = [ |
| 809 | 'width', 'height', 'aspect-ratio', 'resolution', 'color', 'color-index', 'monochrome', |
| 810 | // deprecated |
| 811 | 'device-width', 'device-height', 'device-aspect-ratio' |
| 812 | ]; |
| 813 | $discreteFeatures = [ |
| 814 | 'orientation', 'scan', 'grid', 'update', 'overflow-block', 'overflow-inline', 'color-gamut', |
| 815 | 'pointer', 'hover', 'any-pointer', 'any-hover', 'scripting', 'prefers-color-scheme' |
| 816 | ]; |
| 817 | $mfName = new KeywordMatcher( array_merge( |
| 818 | $rangeFeatures, |
| 819 | array_map( static function ( $f ) { |
| 820 | return "min-$f"; |
| 821 | }, $rangeFeatures ), |
| 822 | array_map( static function ( $f ) { |
| 823 | return "max-$f"; |
| 824 | }, $rangeFeatures ), |
| 825 | $discreteFeatures |
| 826 | ) ); |
| 827 | } else { |
| 828 | $anythingPlus = new AnythingMatcher( [ 'quantifier' => '+' ] ); |
| 829 | $generalEnclosed = new Alternative( [ |
| 830 | new FunctionMatcher( null, $anythingPlus ), |
| 831 | new BlockMatcher( Token::T_LEFT_PAREN, |
| 832 | new Juxtaposition( [ $this->ident(), $anythingPlus ] ) |
| 833 | ), |
| 834 | ] ); |
| 835 | $mediaType = $this->ident(); |
| 836 | $mfName = $this->ident(); |
| 837 | } |
| 838 | |
| 839 | $posInt = $this->calc( |
| 840 | new TokenMatcher( Token::T_NUMBER, static function ( Token $t ) { |
| 841 | return $t->typeFlag() === 'integer' && preg_match( '/^\+?\d+$/', $t->representation() ); |
| 842 | } ), |
| 843 | 'integer' |
| 844 | ); |
| 845 | $eq = new DelimMatcher( '=' ); |
| 846 | $oeq = Quantifier::optional( new Juxtaposition( [ new NoWhitespace, $eq ] ) ); |
| 847 | $ltgteq = Quantifier::optional( new Alternative( [ |
| 848 | $eq, |
| 849 | new Juxtaposition( [ new DelimMatcher( [ '<', '>' ] ), $oeq ] ), |
| 850 | ] ) ); |
| 851 | $lteq = new Juxtaposition( [ new DelimMatcher( '<' ), $oeq ] ); |
| 852 | $gteq = new Juxtaposition( [ new DelimMatcher( '>' ), $oeq ] ); |
| 853 | $mfValue = new Alternative( [ |
| 854 | $this->number(), |
| 855 | $this->dimension(), |
| 856 | $this->ident(), |
| 857 | new KeywordMatcher( [ 'light', 'dark' ] ), |
| 858 | new Juxtaposition( [ $posInt, new DelimMatcher( '/' ), $posInt ] ), |
| 859 | ] ); |
| 860 | |
| 861 | // temporary |
| 862 | $mediaInParens = new NothingMatcher(); |
| 863 | $mediaNot = new Juxtaposition( [ new KeywordMatcher( 'not' ), &$mediaInParens ] ); |
| 864 | $mediaAnd = new Juxtaposition( [ new KeywordMatcher( 'and' ), &$mediaInParens ] ); |
| 865 | $mediaOr = new Juxtaposition( [ new KeywordMatcher( 'or' ), &$mediaInParens ] ); |
| 866 | $mediaCondition = new Alternative( [ |
| 867 | $mediaNot, |
| 868 | new Juxtaposition( [ |
| 869 | &$mediaInParens, |
| 870 | new Alternative( [ |
| 871 | Quantifier::star( $mediaAnd ), |
| 872 | Quantifier::star( $mediaOr ), |
| 873 | ] ) |
| 874 | ] ), |
| 875 | ] ); |
| 876 | $mediaConditionWithoutOr = new Alternative( [ |
| 877 | $mediaNot, |
| 878 | new Juxtaposition( [ &$mediaInParens, Quantifier::star( $mediaAnd ) ] ), |
| 879 | ] ); |
| 880 | $mediaFeature = new BlockMatcher( Token::T_LEFT_PAREN, new Alternative( [ |
| 881 | // <mf-plain> |
| 882 | new Juxtaposition( [ $mfName, new TokenMatcher( Token::T_COLON ), $mfValue ] ), |
| 883 | // <mf-boolean> |
| 884 | $mfName, |
| 885 | // <mf-range>, 1st alternative |
| 886 | new Juxtaposition( [ $mfName, $ltgteq, $mfValue ] ), |
| 887 | // <mf-range>, 2nd alternative |
| 888 | new Juxtaposition( [ $mfValue, $ltgteq, $mfName ] ), |
| 889 | // <mf-range>, 3rd alt |
| 890 | new Juxtaposition( [ $mfValue, $lteq, $mfName, $lteq, $mfValue ] ), |
| 891 | // <mf-range>, 4th alt |
| 892 | new Juxtaposition( [ $mfValue, $gteq, $mfName, $gteq, $mfValue ] ), |
| 893 | ] ) ); |
| 894 | $mediaInParens = new Alternative( [ |
| 895 | new BlockMatcher( Token::T_LEFT_PAREN, $mediaCondition ), |
| 896 | $mediaFeature, |
| 897 | $generalEnclosed, |
| 898 | ] ); |
| 899 | |
| 900 | $this->cache[$key] = new Alternative( [ |
| 901 | $mediaCondition, |
| 902 | new Juxtaposition( [ |
| 903 | Quantifier::optional( new KeywordMatcher( [ 'not', 'only' ] ) ), |
| 904 | $mediaType, |
| 905 | Quantifier::optional( new Juxtaposition( [ |
| 906 | new KeywordMatcher( 'and' ), |
| 907 | $mediaConditionWithoutOr, |
| 908 | ] ) ) |
| 909 | ] ) |
| 910 | ] ); |
| 911 | } |
| 912 | |
| 913 | return $this->cache[$key]; |
| 914 | } |
| 915 | |
| 916 | /** |
| 917 | * Matcher for a CSS media query list |
| 918 | * @see https://www.w3.org/TR/2017/CR-mediaqueries-4-20170905/#mq-syntax |
| 919 | * @param bool $strict Only allow defined query types |
| 920 | * @return Matcher |
| 921 | */ |
| 922 | public function cssMediaQueryList( $strict = true ) { |
| 923 | $key = __METHOD__ . ':' . ( $strict ? 'strict' : 'unstrict' ); |
| 924 | if ( !isset( $this->cache[$key] ) ) { |
| 925 | $this->cache[$key] = Quantifier::hash( $this->cssMediaQuery( $strict ), 0, INF ); |
| 926 | } |
| 927 | |
| 928 | return $this->cache[$key]; |
| 929 | } |
| 930 | |
| 931 | /** |
| 932 | * Matcher for a "supports-condition" |
| 933 | * @see https://www.w3.org/TR/2013/CR-css3-conditional-20130404/#supports_condition |
| 934 | * @param PropertySanitizer|null $declarationSanitizer Check declarations against this Sanitizer |
| 935 | * @param bool $strict Only accept defined syntax. Default true. |
| 936 | * @return Matcher |
| 937 | */ |
| 938 | public function cssSupportsCondition( |
| 939 | PropertySanitizer $declarationSanitizer = null, $strict = true |
| 940 | ) { |
| 941 | $ws = $this->significantWhitespace(); |
| 942 | $anythingPlus = new AnythingMatcher( [ 'quantifier' => '+' ] ); |
| 943 | |
| 944 | if ( $strict ) { |
| 945 | $generalEnclosed = new NothingMatcher(); |
| 946 | } else { |
| 947 | $generalEnclosed = new Alternative( [ |
| 948 | new FunctionMatcher( null, $anythingPlus ), |
| 949 | new BlockMatcher( Token::T_LEFT_PAREN, new Juxtaposition( [ $this->ident(), $anythingPlus ] ) ), |
| 950 | ] ); |
| 951 | } |
| 952 | |
| 953 | // temp |
| 954 | $supportsConditionBlock = new NothingMatcher(); |
| 955 | $supportsConditionInParens = new Alternative( [ |
| 956 | &$supportsConditionBlock, |
| 957 | new BlockMatcher( Token::T_LEFT_PAREN, $this->cssDeclaration( $declarationSanitizer ) ), |
| 958 | $generalEnclosed, |
| 959 | ] ); |
| 960 | $supportsCondition = new Alternative( [ |
| 961 | new Juxtaposition( [ new KeywordMatcher( 'not' ), $ws, $supportsConditionInParens ] ), |
| 962 | new Juxtaposition( [ $supportsConditionInParens, Quantifier::plus( new Juxtaposition( [ |
| 963 | $ws, new KeywordMatcher( 'and' ), $ws, $supportsConditionInParens |
| 964 | ] ) ) ] ), |
| 965 | new Juxtaposition( [ $supportsConditionInParens, Quantifier::plus( new Juxtaposition( [ |
| 966 | $ws, new KeywordMatcher( 'or' ), $ws, $supportsConditionInParens |
| 967 | ] ) ) ] ), |
| 968 | $supportsConditionInParens, |
| 969 | ] ); |
| 970 | $supportsConditionBlock = new BlockMatcher( Token::T_LEFT_PAREN, $supportsCondition ); |
| 971 | |
| 972 | return $supportsCondition; |
| 973 | } |
| 974 | |
| 975 | /** |
| 976 | * Matcher for a declaration |
| 977 | * @param PropertySanitizer|null $declarationSanitizer Check declarations against this Sanitizer |
| 978 | * @return Matcher |
| 979 | */ |
| 980 | public function cssDeclaration( PropertySanitizer $declarationSanitizer = null ) { |
| 981 | $anythingPlus = new AnythingMatcher( [ 'quantifier' => '+' ] ); |
| 982 | |
| 983 | return new CheckedMatcher( |
| 984 | $anythingPlus, |
| 985 | static function ( ComponentValueList $list, GrammarMatch $match, array $options ) |
| 986 | use ( $declarationSanitizer ) |
| 987 | { |
| 988 | $cvlist = new ComponentValueList( $match->getValues() ); |
| 989 | $parser = Parser::newFromTokens( $cvlist->toTokenArray() ); |
| 990 | $declaration = $parser->parseDeclaration(); |
| 991 | if ( !$declaration || $parser->getParseErrors() ) { |
| 992 | return false; |
| 993 | } |
| 994 | if ( !$declarationSanitizer ) { |
| 995 | return true; |
| 996 | } |
| 997 | $reset = $declarationSanitizer->stashSanitizationErrors(); |
| 998 | $ret = $declarationSanitizer->sanitize( $declaration ); |
| 999 | $errors = $declarationSanitizer->getSanitizationErrors(); |
| 1000 | unset( $reset ); |
| 1001 | return $ret === $declaration && !$errors; |
| 1002 | } |
| 1003 | ); |
| 1004 | } |
| 1005 | |
| 1006 | /** |
| 1007 | * Matcher for single easing functions from CSS Easing Functions Level 1 |
| 1008 | * @see https://www.w3.org/TR/2019/CR-css-easing-1-20190430/#typedef-easing-function |
| 1009 | * @return Matcher |
| 1010 | */ |
| 1011 | public function cssSingleEasingFunction() { |
| 1012 | if ( !isset( $this->cache[__METHOD__] ) ) { |
| 1013 | $this->cache[__METHOD__] = new Alternative( [ |
| 1014 | new KeywordMatcher( [ |
| 1015 | 'ease', 'linear', 'ease-in', 'ease-out', 'ease-in-out', 'step-start', 'step-end' |
| 1016 | ] ), |
| 1017 | new FunctionMatcher( 'steps', new Juxtaposition( [ |
| 1018 | $this->integer(), |
| 1019 | Quantifier::optional( new KeywordMatcher( [ |
| 1020 | 'jump-start', 'jump-end', 'jump-none', 'jump-both', 'start', 'end' |
| 1021 | ] ) ), |
| 1022 | ], true ) ), |
| 1023 | new FunctionMatcher( 'cubic-bezier', Quantifier::hash( $this->number(), 4, 4 ) ), |
| 1024 | ] ); |
| 1025 | } |
| 1026 | |
| 1027 | return $this->cache[__METHOD__]; |
| 1028 | } |
| 1029 | |
| 1030 | /** |
| 1031 | * @name CSS Selectors Level 3 |
| 1032 | * @{ |
| 1033 | * |
| 1034 | * https://www.w3.org/TR/2018/REC-selectors-3-20181106/#w3cselgrammar |
| 1035 | */ |
| 1036 | |
| 1037 | /** |
| 1038 | * List of selectors (selectors_group) |
| 1039 | * |
| 1040 | * selector [ COMMA S* selector ]* |
| 1041 | * |
| 1042 | * Capturing is set up for the `selector`s. |
| 1043 | * |
| 1044 | * @return Matcher |
| 1045 | */ |
| 1046 | public function cssSelectorList() { |
| 1047 | if ( !isset( $this->cache[__METHOD__] ) ) { |
| 1048 | // Technically the spec doesn't allow whitespace before the comma, |
| 1049 | // but I'd guess every browser does. So just use Quantifier::hash. |
| 1050 | $selector = $this->cssSelector()->capture( 'selector' ); |
| 1051 | $this->cache[__METHOD__] = Quantifier::hash( $selector ); |
| 1052 | $this->cache[__METHOD__]->setDefaultOptions( [ 'skip-whitespace' => false ] ); |
| 1053 | } |
| 1054 | return $this->cache[__METHOD__]; |
| 1055 | } |
| 1056 | |
| 1057 | /** |
| 1058 | * A single selector (selector) |
| 1059 | * |
| 1060 | * simple_selector_sequence [ combinator simple_selector_sequence ]* |
| 1061 | * |
| 1062 | * Capturing is set up for the `simple_selector_sequence`s (as 'simple') and `combinator`. |
| 1063 | * |
| 1064 | * @return Matcher |
| 1065 | */ |
| 1066 | public function cssSelector() { |
| 1067 | if ( !isset( $this->cache[__METHOD__] ) ) { |
| 1068 | $simple = $this->cssSimpleSelectorSeq()->capture( 'simple' ); |
| 1069 | $this->cache[__METHOD__] = new Juxtaposition( [ |
| 1070 | $simple, |
| 1071 | Quantifier::star( new Juxtaposition( [ |
| 1072 | $this->cssCombinator()->capture( 'combinator' ), |
| 1073 | $simple, |
| 1074 | ] ) ) |
| 1075 | ] ); |
| 1076 | $this->cache[__METHOD__]->setDefaultOptions( [ 'skip-whitespace' => false ] ); |
| 1077 | } |
| 1078 | return $this->cache[__METHOD__]; |
| 1079 | } |
| 1080 | |
| 1081 | /** |
| 1082 | * A CSS combinator (combinator) |
| 1083 | * |
| 1084 | * PLUS S* | GREATER S* | TILDE S* | S+ |
| 1085 | * |
| 1086 | * (combinators can be surrounded by whitespace) |
| 1087 | * |
| 1088 | * @return Matcher |
| 1089 | */ |
| 1090 | public function cssCombinator() { |
| 1091 | if ( !isset( $this->cache[__METHOD__] ) ) { |
| 1092 | $this->cache[__METHOD__] = new Alternative( [ |
| 1093 | new Juxtaposition( [ |
| 1094 | $this->optionalWhitespace(), |
| 1095 | new DelimMatcher( [ '+', '>', '~' ] ), |
| 1096 | $this->optionalWhitespace(), |
| 1097 | ] ), |
| 1098 | $this->significantWhitespace(), |
| 1099 | ] ); |
| 1100 | $this->cache[__METHOD__]->setDefaultOptions( [ 'skip-whitespace' => false ] ); |
| 1101 | } |
| 1102 | return $this->cache[__METHOD__]; |
| 1103 | } |
| 1104 | |
| 1105 | /** |
| 1106 | * A simple selector sequence (simple_selector_sequence) |
| 1107 | * |
| 1108 | * [ type_selector | universal ] |
| 1109 | * [ HASH | class | attrib | pseudo | negation ]* |
| 1110 | * | [ HASH | class | attrib | pseudo | negation ]+ |
| 1111 | * |
| 1112 | * The following captures are set: |
| 1113 | * - element: [ type_selector | universal ] |
| 1114 | * - id: HASH |
| 1115 | * - class: class |
| 1116 | * - attrib: attrib |
| 1117 | * - pseudo: pseudo |
| 1118 | * - negation: negation |
| 1119 | * |
| 1120 | * @return Matcher |
| 1121 | */ |
| 1122 | public function cssSimpleSelectorSeq() { |
| 1123 | if ( !isset( $this->cache[__METHOD__] ) ) { |
| 1124 | $hashEtc = new Alternative( [ |
| 1125 | $this->cssID()->capture( 'id' ), |
| 1126 | $this->cssClass()->capture( 'class' ), |
| 1127 | $this->cssAttrib()->capture( 'attrib' ), |
| 1128 | $this->cssPseudo()->capture( 'pseudo' ), |
| 1129 | $this->cssNegation()->capture( 'negation' ), |
| 1130 | ] ); |
| 1131 | |
| 1132 | $this->cache[__METHOD__] = new Alternative( [ |
| 1133 | new Juxtaposition( [ |
| 1134 | Alternative::create( [ |
| 1135 | $this->cssTypeSelector(), |
| 1136 | $this->cssUniversal(), |
| 1137 | ] )->capture( 'element' ), |
| 1138 | Quantifier::star( $hashEtc ) |
| 1139 | ] ), |
| 1140 | Quantifier::plus( $hashEtc ) |
| 1141 | ] ); |
| 1142 | $this->cache[__METHOD__]->setDefaultOptions( [ 'skip-whitespace' => false ] ); |
| 1143 | } |
| 1144 | return $this->cache[__METHOD__]; |
| 1145 | } |
| 1146 | |
| 1147 | /** |
| 1148 | * A type selector, i.e. a tag name (type_selector) |
| 1149 | * |
| 1150 | * [ namespace_prefix ] ? element_name |
| 1151 | * |
| 1152 | * where element_name is |
| 1153 | * |
| 1154 | * IDENT |
| 1155 | * |
| 1156 | * @return Matcher |
| 1157 | */ |
| 1158 | public function cssTypeSelector() { |
| 1159 | if ( !isset( $this->cache[__METHOD__] ) ) { |
| 1160 | $this->cache[__METHOD__] = new Juxtaposition( [ |
| 1161 | $this->cssOptionalNamespacePrefix(), |
| 1162 | new TokenMatcher( Token::T_IDENT ) |
| 1163 | ] ); |
| 1164 | $this->cache[__METHOD__]->setDefaultOptions( [ 'skip-whitespace' => false ] ); |
| 1165 | } |
| 1166 | return $this->cache[__METHOD__]; |
| 1167 | } |
| 1168 | |
| 1169 | /** |
| 1170 | * A namespace prefix (namespace_prefix) |
| 1171 | * |
| 1172 | * [ IDENT | '*' ]? '|' |
| 1173 | * |
| 1174 | * @return Matcher |
| 1175 | */ |
| 1176 | public function cssNamespacePrefix() { |
| 1177 | if ( !isset( $this->cache[__METHOD__] ) ) { |
| 1178 | $this->cache[__METHOD__] = new Juxtaposition( [ |
| 1179 | Quantifier::optional( new Alternative( [ |
| 1180 | $this->ident(), |
| 1181 | new DelimMatcher( [ '*' ] ), |
| 1182 | ] ) ), |
| 1183 | new DelimMatcher( [ '|' ] ), |
| 1184 | ] ); |
| 1185 | $this->cache[__METHOD__]->setDefaultOptions( [ 'skip-whitespace' => false ] ); |
| 1186 | } |
| 1187 | return $this->cache[__METHOD__]; |
| 1188 | } |
| 1189 | |
| 1190 | /** |
| 1191 | * An optional namespace prefix |
| 1192 | * |
| 1193 | * [ namespace_prefix ]? |
| 1194 | * |
| 1195 | * @return Matcher |
| 1196 | */ |
| 1197 | private function cssOptionalNamespacePrefix() { |
| 1198 | if ( !isset( $this->cache[__METHOD__] ) ) { |
| 1199 | $this->cache[__METHOD__] = Quantifier::optional( $this->cssNamespacePrefix() ); |
| 1200 | $this->cache[__METHOD__]->setDefaultOptions( [ 'skip-whitespace' => false ] ); |
| 1201 | } |
| 1202 | return $this->cache[__METHOD__]; |
| 1203 | } |
| 1204 | |
| 1205 | /** |
| 1206 | * The universal selector (universal) |
| 1207 | * |
| 1208 | * [ namespace_prefix ]? '*' |
| 1209 | * |
| 1210 | * @return Matcher |
| 1211 | */ |
| 1212 | public function cssUniversal() { |
| 1213 | if ( !isset( $this->cache[__METHOD__] ) ) { |
| 1214 | $this->cache[__METHOD__] = new Juxtaposition( [ |
| 1215 | $this->cssOptionalNamespacePrefix(), |
| 1216 | new DelimMatcher( [ '*' ] ) |
| 1217 | ] ); |
| 1218 | $this->cache[__METHOD__]->setDefaultOptions( [ 'skip-whitespace' => false ] ); |
| 1219 | } |
| 1220 | return $this->cache[__METHOD__]; |
| 1221 | } |
| 1222 | |
| 1223 | /** |
| 1224 | * An ID selector |
| 1225 | * |
| 1226 | * HASH |
| 1227 | * |
| 1228 | * @return Matcher |
| 1229 | */ |
| 1230 | public function cssID() { |
| 1231 | if ( !isset( $this->cache[__METHOD__] ) ) { |
| 1232 | $this->cache[__METHOD__] = new TokenMatcher( Token::T_HASH, static function ( Token $t ) { |
| 1233 | return $t->typeFlag() === 'id'; |
| 1234 | } ); |
| 1235 | $this->cache[__METHOD__]->setDefaultOptions( [ 'skip-whitespace' => false ] ); |
| 1236 | } |
| 1237 | return $this->cache[__METHOD__]; |
| 1238 | } |
| 1239 | |
| 1240 | /** |
| 1241 | * A class selector (class) |
| 1242 | * |
| 1243 | * '.' IDENT |
| 1244 | * |
| 1245 | * @return Matcher |
| 1246 | */ |
| 1247 | public function cssClass() { |
| 1248 | if ( !isset( $this->cache[__METHOD__] ) ) { |
| 1249 | $this->cache[__METHOD__] = new Juxtaposition( [ |
| 1250 | new DelimMatcher( [ '.' ] ), |
| 1251 | $this->ident() |
| 1252 | ] ); |
| 1253 | $this->cache[__METHOD__]->setDefaultOptions( [ 'skip-whitespace' => false ] ); |
| 1254 | } |
| 1255 | return $this->cache[__METHOD__]; |
| 1256 | } |
| 1257 | |
| 1258 | /** |
| 1259 | * An attribute selector (attrib) |
| 1260 | * |
| 1261 | * '[' S* [ namespace_prefix ]? IDENT S* |
| 1262 | * [ [ PREFIXMATCH | |
| 1263 | * SUFFIXMATCH | |
| 1264 | * SUBSTRINGMATCH | |
| 1265 | * '=' | |
| 1266 | * INCLUDES | |
| 1267 | * DASHMATCH ] S* [ IDENT | STRING ] S* |
| 1268 | * ]? ']' |
| 1269 | * |
| 1270 | * Captures are set for the attribute, test, and value. Note that these |
| 1271 | * captures will probably be relative to the contents of the SimpleBlock |
| 1272 | * that this matcher matches! |
| 1273 | * |
| 1274 | * @return Matcher |
| 1275 | */ |
| 1276 | public function cssAttrib() { |
| 1277 | if ( !isset( $this->cache[__METHOD__] ) ) { |
| 1278 | // An attribute is going to be parsed by the parser as a |
| 1279 | // SimpleBlock, so that's what we need to look for here. |
| 1280 | |
| 1281 | $this->cache[__METHOD__] = new BlockMatcher( Token::T_LEFT_BRACKET, |
| 1282 | new Juxtaposition( [ |
| 1283 | $this->optionalWhitespace(), |
| 1284 | Juxtaposition::create( [ |
| 1285 | $this->cssOptionalNamespacePrefix(), |
| 1286 | $this->ident(), |
| 1287 | ] )->capture( 'attribute' ), |
| 1288 | $this->optionalWhitespace(), |
| 1289 | Quantifier::optional( new Juxtaposition( [ |
| 1290 | // Sigh. They removed various tokens from CSS Syntax 3, but didn't update the grammar |
| 1291 | // in CSS Selectors 3. Wing it with a hint from CSS Selectors 4's <attr-matcher> |
| 1292 | ( new Juxtaposition( [ |
| 1293 | Quantifier::optional( new DelimMatcher( [ '^', '$', '*', '~', '|' ] ) ), |
| 1294 | new DelimMatcher( [ '=' ] ), |
| 1295 | ] ) )->capture( 'test' ), |
| 1296 | $this->optionalWhitespace(), |
| 1297 | Alternative::create( [ |
| 1298 | $this->ident(), |
| 1299 | $this->string(), |
| 1300 | ] )->capture( 'value' ), |
| 1301 | $this->optionalWhitespace(), |
| 1302 | ] ) ), |
| 1303 | ] ) |
| 1304 | ); |
| 1305 | $this->cache[__METHOD__]->setDefaultOptions( [ 'skip-whitespace' => false ] ); |
| 1306 | } |
| 1307 | return $this->cache[__METHOD__]; |
| 1308 | } |
| 1309 | |
| 1310 | /** |
| 1311 | * A pseudo-class or pseudo-element (pseudo) |
| 1312 | * |
| 1313 | * ':' ':'? [ IDENT | functional_pseudo ] |
| 1314 | * |
| 1315 | * Where functional_pseudo is |
| 1316 | * |
| 1317 | * FUNCTION S* expression ')' |
| 1318 | * |
| 1319 | * Although this actually only matches the pseudo-selectors defined in the |
| 1320 | * following sources: |
| 1321 | * - https://www.w3.org/TR/2018/REC-selectors-3-20181106/#pseudo-classes |
| 1322 | * - https://www.w3.org/TR/2019/WD-css-pseudo-4-20190225/ |
| 1323 | * |
| 1324 | * @return Matcher |
| 1325 | */ |
| 1326 | public function cssPseudo() { |
| 1327 | if ( !isset( $this->cache[__METHOD__] ) ) { |
| 1328 | $colon = new TokenMatcher( Token::T_COLON ); |
| 1329 | $ows = $this->optionalWhitespace(); |
| 1330 | $anplusb = new Juxtaposition( [ $ows, $this->cssANplusB(), $ows ] ); |
| 1331 | $this->cache[__METHOD__] = new Alternative( [ |
| 1332 | new Juxtaposition( [ |
| 1333 | $colon, |
| 1334 | new Alternative( [ |
| 1335 | new KeywordMatcher( [ |
| 1336 | 'link', 'visited', 'hover', 'active', 'focus', 'target', 'enabled', 'disabled', 'checked', |
| 1337 | 'indeterminate', 'root', 'first-child', 'last-child', 'first-of-type', |
| 1338 | 'last-of-type', 'only-child', 'only-of-type', 'empty', |
| 1339 | // CSS2-compat elements with class syntax |
| 1340 | 'first-line', 'first-letter', 'before', 'after', |
| 1341 | ] ), |
| 1342 | new FunctionMatcher( 'lang', new Juxtaposition( [ $ows, $this->ident(), $ows ] ) ), |
| 1343 | new FunctionMatcher( 'nth-child', $anplusb ), |
| 1344 | new FunctionMatcher( 'nth-last-child', $anplusb ), |
| 1345 | new FunctionMatcher( 'nth-of-type', $anplusb ), |
| 1346 | new FunctionMatcher( 'nth-last-of-type', $anplusb ), |
| 1347 | ] ), |
| 1348 | ] ), |
| 1349 | new Juxtaposition( [ |
| 1350 | $colon, |
| 1351 | $colon, |
| 1352 | new KeywordMatcher( [ |
| 1353 | 'first-line', 'first-letter', 'before', 'after', 'selection', 'inactive-selection', |
| 1354 | 'spelling-error', 'grammar-error', 'marker', 'placeholder' |
| 1355 | ] ), |
| 1356 | ] ), |
| 1357 | ] ); |
| 1358 | $this->cache[__METHOD__]->setDefaultOptions( [ 'skip-whitespace' => false ] ); |
| 1359 | } |
| 1360 | return $this->cache[__METHOD__]; |
| 1361 | } |
| 1362 | |
| 1363 | /** |
| 1364 | * An "AN+B" form |
| 1365 | * |
| 1366 | * https://www.w3.org/TR/2019/CR-css-syntax-3-20190716/#anb-microsyntax |
| 1367 | * |
| 1368 | * @return Matcher |
| 1369 | */ |
| 1370 | public function cssANplusB() { |
| 1371 | if ( !isset( $this->cache[__METHOD__] ) ) { |
| 1372 | // Quoth the spec: |
| 1373 | // > The An+B notation was originally defined using a slightly |
| 1374 | // > different tokenizer than the rest of CSS, resulting in a |
| 1375 | // > somewhat odd definition when expressed in terms of CSS tokens. |
| 1376 | // That's a bit of an understatement |
| 1377 | |
| 1378 | $plusQ = Quantifier::optional( new DelimMatcher( [ '+' ] ) ); |
| 1379 | $n = new KeywordMatcher( [ 'n' ] ); |
| 1380 | $dashN = new KeywordMatcher( [ '-n' ] ); |
| 1381 | $nDash = new KeywordMatcher( [ 'n-' ] ); |
| 1382 | $plusQN = new Juxtaposition( [ $plusQ, $n ] ); |
| 1383 | $plusQNDash = new Juxtaposition( [ $plusQ, $nDash ] ); |
| 1384 | $nDimension = new TokenMatcher( Token::T_DIMENSION, static function ( Token $t ) { |
| 1385 | return $t->typeFlag() === 'integer' && !strcasecmp( $t->unit(), 'n' ); |
| 1386 | } ); |
| 1387 | $nDashDimension = new TokenMatcher( Token::T_DIMENSION, static function ( Token $t ) { |
| 1388 | return $t->typeFlag() === 'integer' && !strcasecmp( $t->unit(), 'n-' ); |
| 1389 | } ); |
| 1390 | $nDashDigitDimension = new TokenMatcher( Token::T_DIMENSION, static function ( Token $t ) { |
| 1391 | return $t->typeFlag() === 'integer' && preg_match( '/^n-\d+$/i', $t->unit() ); |
| 1392 | } ); |
| 1393 | $nDashDigitIdent = new TokenMatcher( Token::T_IDENT, static function ( Token $t ) { |
| 1394 | return preg_match( '/^n-\d+$/i', $t->value() ); |
| 1395 | } ); |
| 1396 | $dashNDashDigitIdent = new TokenMatcher( Token::T_IDENT, static function ( Token $t ) { |
| 1397 | return preg_match( '/^-n-\d+$/i', $t->value() ); |
| 1398 | } ); |
| 1399 | $signedInt = new TokenMatcher( Token::T_NUMBER, static function ( Token $t ) { |
| 1400 | return $t->typeFlag() === 'integer' && preg_match( '/^[+-]/', $t->representation() ); |
| 1401 | } ); |
| 1402 | $signlessInt = new TokenMatcher( Token::T_NUMBER, static function ( Token $t ) { |
| 1403 | return $t->typeFlag() === 'integer' && preg_match( '/^\d/', $t->representation() ); |
| 1404 | } ); |
| 1405 | $plusOrMinus = new DelimMatcher( [ '+', '-' ] ); |
| 1406 | $S = $this->optionalWhitespace(); |
| 1407 | |
| 1408 | $this->cache[__METHOD__] = new Alternative( [ |
| 1409 | new KeywordMatcher( [ 'odd', 'even' ] ), |
| 1410 | new TokenMatcher( Token::T_NUMBER, static function ( Token $t ) { |
| 1411 | return $t->typeFlag() === 'integer'; |
| 1412 | } ), |
| 1413 | $nDimension, |
| 1414 | $plusQN, |
| 1415 | $dashN, |
| 1416 | $nDashDigitDimension, |
| 1417 | new Juxtaposition( [ $plusQ, $nDashDigitIdent ] ), |
| 1418 | $dashNDashDigitIdent, |
| 1419 | new Juxtaposition( [ $nDimension, $S, $signedInt ] ), |
| 1420 | new Juxtaposition( [ $plusQN, $S, $signedInt ] ), |
| 1421 | new Juxtaposition( [ $dashN, $S, $signedInt ] ), |
| 1422 | new Juxtaposition( [ $nDashDimension, $S, $signlessInt ] ), |
| 1423 | new Juxtaposition( [ $plusQNDash, $S, $signlessInt ] ), |
| 1424 | new Juxtaposition( [ new KeywordMatcher( [ '-n-' ] ), $S, $signlessInt ] ), |
| 1425 | new Juxtaposition( [ $nDimension, $S, $plusOrMinus, $S, $signlessInt ] ), |
| 1426 | new Juxtaposition( [ $plusQN, $S, $plusOrMinus, $S, $signlessInt ] ), |
| 1427 | new Juxtaposition( [ $dashN, $S, $plusOrMinus, $S, $signlessInt ] ) |
| 1428 | ] ); |
| 1429 | $this->cache[__METHOD__]->setDefaultOptions( [ 'skip-whitespace' => false ] ); |
| 1430 | } |
| 1431 | return $this->cache[__METHOD__]; |
| 1432 | } |
| 1433 | |
| 1434 | /** |
| 1435 | * A negation (negation) |
| 1436 | * |
| 1437 | * ':' not( S* [ type_selector | universal | HASH | class | attrib | pseudo ] S* ')' |
| 1438 | * |
| 1439 | * @return Matcher |
| 1440 | */ |
| 1441 | public function cssNegation() { |
| 1442 | if ( !isset( $this->cache[__METHOD__] ) ) { |
| 1443 | // A negation is going to be parsed by the parser as a colon |
| 1444 | // followed by a CSSFunction, so that's what we need to look for |
| 1445 | // here. |
| 1446 | |
| 1447 | $this->cache[__METHOD__] = new Juxtaposition( [ |
| 1448 | new TokenMatcher( Token::T_COLON ), |
| 1449 | new FunctionMatcher( 'not', |
| 1450 | new Juxtaposition( [ |
| 1451 | $this->optionalWhitespace(), |
| 1452 | new Alternative( [ |
| 1453 | $this->cssTypeSelector(), |
| 1454 | $this->cssUniversal(), |
| 1455 | $this->cssID(), |
| 1456 | $this->cssClass(), |
| 1457 | $this->cssAttrib(), |
| 1458 | $this->cssPseudo(), |
| 1459 | ] ), |
| 1460 | $this->optionalWhitespace(), |
| 1461 | ] ) |
| 1462 | ) |
| 1463 | ] ); |
| 1464 | $this->cache[__METHOD__]->setDefaultOptions( [ 'skip-whitespace' => false ] ); |
| 1465 | } |
| 1466 | return $this->cache[__METHOD__]; |
| 1467 | } |
| 1468 | |
| 1469 | /** |
| 1470 | * @return KeywordMatcher |
| 1471 | */ |
| 1472 | public function colorWords(): KeywordMatcher { |
| 1473 | return new KeywordMatcher( [ |
| 1474 | // Basic colors |
| 1475 | 'aqua', 'black', 'blue', 'fuchsia', 'gray', 'green', |
| 1476 | 'lime', 'maroon', 'navy', 'olive', 'purple', 'red', |
| 1477 | 'silver', 'teal', 'white', 'yellow', |
| 1478 | // Extended colors |
| 1479 | 'aliceblue', 'antiquewhite', 'aquamarine', 'azure', |
| 1480 | 'beige', 'bisque', 'blanchedalmond', 'blueviolet', 'brown', |
| 1481 | 'burlywood', 'cadetblue', 'chartreuse', 'chocolate', |
| 1482 | 'coral', 'cornflowerblue', 'cornsilk', 'crimson', 'cyan', |
| 1483 | 'darkblue', 'darkcyan', 'darkgoldenrod', 'darkgray', |
| 1484 | 'darkgreen', 'darkgrey', 'darkkhaki', 'darkmagenta', |
| 1485 | 'darkolivegreen', 'darkorange', 'darkorchid', 'darkred', |
| 1486 | 'darksalmon', 'darkseagreen', 'darkslateblue', |
| 1487 | 'darkslategray', 'darkslategrey', 'darkturquoise', |
| 1488 | 'darkviolet', 'deeppink', 'deepskyblue', 'dimgray', |
| 1489 | 'dimgrey', 'dodgerblue', 'firebrick', 'floralwhite', |
| 1490 | 'forestgreen', 'gainsboro', 'ghostwhite', 'gold', |
| 1491 | 'goldenrod', 'greenyellow', 'grey', 'honeydew', 'hotpink', |
| 1492 | 'indianred', 'indigo', 'ivory', 'khaki', 'lavender', |
| 1493 | 'lavenderblush', 'lawngreen', 'lemonchiffon', 'lightblue', |
| 1494 | 'lightcoral', 'lightcyan', 'lightgoldenrodyellow', |
| 1495 | 'lightgray', 'lightgreen', 'lightgrey', 'lightpink', |
| 1496 | 'lightsalmon', 'lightseagreen', 'lightskyblue', |
| 1497 | 'lightslategray', 'lightslategrey', 'lightsteelblue', |
| 1498 | 'lightyellow', 'limegreen', 'linen', 'magenta', |
| 1499 | 'mediumaquamarine', 'mediumblue', 'mediumorchid', |
| 1500 | 'mediumpurple', 'mediumseagreen', 'mediumslateblue', |
| 1501 | 'mediumspringgreen', 'mediumturquoise', 'mediumvioletred', |
| 1502 | 'midnightblue', 'mintcream', 'mistyrose', 'moccasin', |
| 1503 | 'navajowhite', 'oldlace', 'olivedrab', 'orange', |
| 1504 | 'orangered', 'orchid', 'palegoldenrod', 'palegreen', |
| 1505 | 'paleturquoise', 'palevioletred', 'papayawhip', |
| 1506 | 'peachpuff', 'peru', 'pink', 'plum', 'powderblue', |
| 1507 | 'rosybrown', 'royalblue', 'saddlebrown', 'salmon', |
| 1508 | 'sandybrown', 'seagreen', 'seashell', 'sienna', 'skyblue', |
| 1509 | 'slateblue', 'slategray', 'slategrey', 'snow', |
| 1510 | 'springgreen', 'steelblue', 'tan', 'thistle', 'tomato', |
| 1511 | 'turquoise', 'violet', 'wheat', 'whitesmoke', |
| 1512 | 'yellowgreen', |
| 1513 | // Other keywords. Intentionally omitting the deprecated system colors. |
| 1514 | 'transparent', 'currentColor', |
| 1515 | ] ); |
| 1516 | } |
| 1517 | |
| 1518 | /** @} */ |
| 1519 | |
| 1520 | } |
| 1521 | |
| 1522 | /** |
| 1523 | * For really cool vim folding this needs to be at the end: |
| 1524 | * vim: foldmarker=@{,@} foldmethod=marker |
| 1525 | */ |