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| 1 | <?php |
| 2 | declare( strict_types = 1 ); |
| 3 | |
| 4 | /** |
| 5 | * Parse and compile Less files into CSS |
| 6 | */ |
| 7 | class Less_Parser { |
| 8 | |
| 9 | /** |
| 10 | * Default parser options |
| 11 | * @var array<string,mixed> |
| 12 | */ |
| 13 | public static $default_options = [ |
| 14 | // whether to compress |
| 15 | 'compress' => false, |
| 16 | // whether units need to evaluate correctly |
| 17 | 'strictUnits' => false, |
| 18 | // How to process math |
| 19 | // |
| 20 | // always - eagerly try to solve all operations |
| 21 | // parens-division - require parens for division "/" |
| 22 | // parens | strict - require parens for all operations |
| 23 | // |
| 24 | // NOTE: We use the default of Less.js 4.0 (parens-division) |
| 25 | // instead of Less.js 3.13 (always). |
| 26 | 'math' => 'parens-division', |
| 27 | // whether to adjust URL's to be relative |
| 28 | 'relativeUrls' => true, |
| 29 | // whether to add args into url tokens |
| 30 | 'urlArgs' => '', |
| 31 | 'numPrecision' => 8, |
| 32 | |
| 33 | 'import_dirs' => [], |
| 34 | |
| 35 | /** |
| 36 | * Set this to a directory to enable the incremental cache. |
| 37 | * |
| 38 | * It is recommended to use Less_Cache::Get() instead, which is much faster, |
| 39 | * as it can skip compilation alltogether. Refer to API.md#incremental-cache |
| 40 | * for more information. |
| 41 | */ |
| 42 | 'cache_dir' => null, |
| 43 | 'cache_incremental' => true, |
| 44 | // one of false, 'serialize', or 'callback' |
| 45 | 'cache_method' => 'serialize', |
| 46 | 'cache_callback_get' => null, |
| 47 | 'cache_callback_set' => null, |
| 48 | |
| 49 | // whether to output a source map |
| 50 | 'sourceMap' => false, |
| 51 | 'sourceMapBasepath' => null, |
| 52 | 'sourceMapWriteTo' => null, |
| 53 | 'sourceMapURL' => null, |
| 54 | |
| 55 | 'indentation' => ' ', |
| 56 | |
| 57 | 'plugins' => [], |
| 58 | 'functions' => [], |
| 59 | |
| 60 | ]; |
| 61 | |
| 62 | /** @var array{compress:bool,strictUnits:bool,relativeUrls:bool,urlArgs:string,numPrecision:int,import_dirs:array,cache_dir:?string,cache_incremental:bool,indentation:string} */ |
| 63 | public static $options = []; |
| 64 | |
| 65 | /** @var string Less input string */ |
| 66 | private $input; |
| 67 | /** @var int input string length */ |
| 68 | private $input_len; |
| 69 | /** @var int current index in `input` */ |
| 70 | private $pos; |
| 71 | /** @var int[] holds state for backtracking */ |
| 72 | private $saveStack = []; |
| 73 | /** @var int */ |
| 74 | private $furthest; |
| 75 | |
| 76 | /** @var bool */ |
| 77 | private $autoCommentAbsorb = true; |
| 78 | /** |
| 79 | * @var array<array{index:int,text:string,isLineComment:bool}> |
| 80 | */ |
| 81 | private $commentStore = []; |
| 82 | |
| 83 | /** |
| 84 | * @var Less_Environment |
| 85 | */ |
| 86 | private $env; |
| 87 | |
| 88 | /** @var Less_Tree[] */ |
| 89 | protected $rules = []; |
| 90 | |
| 91 | /** |
| 92 | * Evaluated ruleset created by `getCss()`. Stored for potential use in `getVariables()` |
| 93 | * @var Less_Tree[]|null |
| 94 | */ |
| 95 | private $cachedEvaldRules; |
| 96 | |
| 97 | /** @var bool */ |
| 98 | public static $has_extends = false; |
| 99 | |
| 100 | /** @var int */ |
| 101 | public static $next_id = 0; |
| 102 | |
| 103 | /** |
| 104 | * Filename to contents of all parsed the files |
| 105 | * |
| 106 | * @var array |
| 107 | */ |
| 108 | public static $contentsMap = []; |
| 109 | |
| 110 | /** |
| 111 | * @param Less_Environment|array|null $env |
| 112 | */ |
| 113 | public function __construct( $env = null ) { |
| 114 | // Top parser on an import tree must be sure there is one "env" |
| 115 | // which will then be passed around by reference. |
| 116 | if ( $env instanceof Less_Environment ) { |
| 117 | $this->env = $env; |
| 118 | } else { |
| 119 | $this->Reset( $env ); |
| 120 | } |
| 121 | |
| 122 | Less_Tree::$parse = $this; |
| 123 | } |
| 124 | |
| 125 | /** |
| 126 | * Reset the parser state completely |
| 127 | */ |
| 128 | public function Reset( $options = null ) { |
| 129 | $this->rules = []; |
| 130 | $this->cachedEvaldRules = null; |
| 131 | self::$has_extends = false; |
| 132 | self::$contentsMap = []; |
| 133 | |
| 134 | $this->env = new Less_Environment(); |
| 135 | |
| 136 | // set new options |
| 137 | $this->SetOptions( self::$default_options ); |
| 138 | if ( is_array( $options ) ) { |
| 139 | $this->SetOptions( $options ); |
| 140 | } |
| 141 | |
| 142 | $this->env->Init(); |
| 143 | } |
| 144 | |
| 145 | /** |
| 146 | * Set one or more compiler options |
| 147 | */ |
| 148 | public function SetOptions( $options ) { |
| 149 | foreach ( $options as $option => $value ) { |
| 150 | $this->SetOption( $option, $value ); |
| 151 | } |
| 152 | } |
| 153 | |
| 154 | /** |
| 155 | * Set one compiler option |
| 156 | */ |
| 157 | public function SetOption( $option, $value ) { |
| 158 | switch ( $option ) { |
| 159 | case 'strictMath': |
| 160 | if ( $value ) { |
| 161 | $this->env->math = Less_Environment::MATH_PARENS; |
| 162 | } else { |
| 163 | $this->env->math = Less_Environment::MATH_ALWAYS; |
| 164 | } |
| 165 | break; |
| 166 | |
| 167 | case 'math': |
| 168 | $value = strtolower( $value ); |
| 169 | if ( $value === 'always' ) { |
| 170 | $this->env->math = Less_Environment::MATH_ALWAYS; |
| 171 | } elseif ( $value === 'parens-division' ) { |
| 172 | $this->env->math = Less_Environment::MATH_PARENS_DIVISION; |
| 173 | } elseif ( $value === 'parens' || $value === 'strict' ) { |
| 174 | $this->env->math = Less_Environment::MATH_PARENS; |
| 175 | } |
| 176 | return; |
| 177 | |
| 178 | case 'import_dirs': |
| 179 | $this->SetImportDirs( $value ); |
| 180 | return; |
| 181 | |
| 182 | case 'cache_dir': |
| 183 | if ( is_string( $value ) ) { |
| 184 | $value = Less_Cache::CheckCacheDir( $value ); |
| 185 | } |
| 186 | break; |
| 187 | |
| 188 | case 'functions': |
| 189 | foreach ( $value as $key => $function ) { |
| 190 | $this->registerFunction( $key, $function ); |
| 191 | } |
| 192 | return; |
| 193 | } |
| 194 | |
| 195 | self::$options[$option] = $value; |
| 196 | } |
| 197 | |
| 198 | /** |
| 199 | * Registers a new custom function |
| 200 | * |
| 201 | * @param string $name function name |
| 202 | * @param callable $callback callback |
| 203 | */ |
| 204 | public function registerFunction( $name, $callback ) { |
| 205 | $this->env->functions[$name] = $callback; |
| 206 | } |
| 207 | |
| 208 | /** |
| 209 | * Removed an already registered function |
| 210 | * |
| 211 | * @param string $name function name |
| 212 | */ |
| 213 | public function unregisterFunction( $name ) { |
| 214 | if ( isset( $this->env->functions[$name] ) ) { |
| 215 | unset( $this->env->functions[$name] ); |
| 216 | } |
| 217 | } |
| 218 | |
| 219 | /** |
| 220 | * Get the current css buffer |
| 221 | * |
| 222 | * @return string |
| 223 | */ |
| 224 | public function getCss() { |
| 225 | $precision = ini_get( 'precision' ); |
| 226 | @ini_set( 'precision', '16' ); |
| 227 | $locale = setlocale( LC_NUMERIC, '0' ); |
| 228 | setlocale( LC_NUMERIC, "C" ); |
| 229 | |
| 230 | $css = ''; |
| 231 | try { |
| 232 | $root = new Less_Tree_Ruleset( null, $this->rules ); |
| 233 | $root->root = true; |
| 234 | $root->firstRoot = true; |
| 235 | |
| 236 | $importVisitor = new Less_ImportVisitor( $this->env ); |
| 237 | $importVisitor->run( $root ); |
| 238 | |
| 239 | $this->PreVisitors( $root ); |
| 240 | |
| 241 | self::$has_extends = false; |
| 242 | $evaldRoot = $root->compile( $this->env ); |
| 243 | |
| 244 | $this->cachedEvaldRules = $evaldRoot->rules; |
| 245 | |
| 246 | $this->PostVisitors( $evaldRoot ); |
| 247 | |
| 248 | if ( self::$options['sourceMap'] ) { |
| 249 | $generator = new Less_SourceMap_Generator( $evaldRoot, self::$contentsMap, self::$options ); |
| 250 | // will also save file |
| 251 | // FIXME: should happen somewhere else? |
| 252 | $css = $generator->generateCSS(); |
| 253 | } else { |
| 254 | $css = $evaldRoot->toCSS(); |
| 255 | } |
| 256 | |
| 257 | if ( self::$options['compress'] ) { |
| 258 | $css = preg_replace( '/(^(\s)+)|((\s)+$)/', '', $css ); |
| 259 | } |
| 260 | |
| 261 | } catch ( Exception $exc ) { |
| 262 | // Intentional fall-through so we can reset environment |
| 263 | } |
| 264 | |
| 265 | // reset php settings |
| 266 | @ini_set( 'precision', $precision ); |
| 267 | setlocale( LC_NUMERIC, $locale ); |
| 268 | |
| 269 | // Rethrow exception after we handled resetting the environment |
| 270 | if ( !empty( $exc ) ) { |
| 271 | if ( $exc instanceof Less_Exception_Parser ) { |
| 272 | $exc->getFinalMessage(); |
| 273 | } |
| 274 | throw $exc; |
| 275 | } |
| 276 | |
| 277 | return $css; |
| 278 | } |
| 279 | |
| 280 | public function findValueOf( $varName ) { |
| 281 | $rules = $this->cachedEvaldRules ?? $this->rules; |
| 282 | |
| 283 | foreach ( $rules as $rule ) { |
| 284 | // @phan-suppress-next-line PhanUndeclaredProperty |
| 285 | if ( isset( $rule->variable ) && ( $rule->variable == true ) && ( str_replace( "@", "", $rule->name ) == $varName ) ) { |
| 286 | return $this->getVariableValue( $rule ); |
| 287 | } |
| 288 | } |
| 289 | return null; |
| 290 | } |
| 291 | |
| 292 | /** |
| 293 | * Get an array of the found variables in the parsed input. |
| 294 | * |
| 295 | * @return array |
| 296 | * @phan-return array<string,string|float|array> |
| 297 | */ |
| 298 | public function getVariables() { |
| 299 | $variables = []; |
| 300 | |
| 301 | $rules = $this->cachedEvaldRules ?? $this->rules; |
| 302 | foreach ( $rules as $key => $rule ) { |
| 303 | if ( $rule instanceof Less_Tree_Declaration && $rule->variable ) { |
| 304 | $variables[$rule->name] = $this->getVariableValue( $rule ); |
| 305 | } |
| 306 | } |
| 307 | return $variables; |
| 308 | } |
| 309 | |
| 310 | public function findVarByName( $var_name ) { |
| 311 | $rules = $this->cachedEvaldRules ?? $this->rules; |
| 312 | |
| 313 | foreach ( $rules as $rule ) { |
| 314 | // @phan-suppress-next-line PhanUndeclaredProperty |
| 315 | if ( isset( $rule->variable ) && ( $rule->variable == true ) ) { |
| 316 | // @phan-suppress-next-line PhanUndeclaredProperty |
| 317 | if ( $rule->name == $var_name ) { |
| 318 | return $this->getVariableValue( $rule ); |
| 319 | } |
| 320 | } |
| 321 | } |
| 322 | return null; |
| 323 | } |
| 324 | |
| 325 | /** |
| 326 | * This method gets the value of the less variable from the rules object. |
| 327 | * Since the objects vary here we add the logic for extracting the css/less value. |
| 328 | * |
| 329 | * @param Less_Tree $var |
| 330 | * @return mixed |
| 331 | * @phan-return string|float|array<string|float> |
| 332 | */ |
| 333 | private function getVariableValue( Less_Tree $var ) { |
| 334 | switch ( get_class( $var ) ) { |
| 335 | case Less_Tree_Color::class: |
| 336 | return $this->rgb2html( $var->rgb ); |
| 337 | case Less_Tree_Variable::class: |
| 338 | return $this->findVarByName( $var->name ); |
| 339 | case Less_Tree_Keyword::class: |
| 340 | return $var->value; |
| 341 | case Less_Tree_Anonymous::class: |
| 342 | $return = []; |
| 343 | if ( is_array( $var->value ) ) { |
| 344 | // in compilation phase, Less_Tree_Anonymous::$val can be a Less_Tree[] |
| 345 | foreach ( $var->value as $value ) { |
| 346 | /** @var Less_Tree $value */ |
| 347 | $return[ $value->name ] = $this->getVariableValue( $value ); |
| 348 | } |
| 349 | } |
| 350 | return count( $return ) === 1 ? $return[0] : $return; |
| 351 | case Less_Tree_Url::class: |
| 352 | // Based on Less_Tree_Url::genCSS() |
| 353 | // Recurse to serialize the Less_Tree_Quoted value |
| 354 | return 'url(' . $this->getVariableValue( $var->value ) . ')'; |
| 355 | case Less_Tree_Declaration::class: |
| 356 | if ( $var->value instanceof Less_Tree_Anonymous ) { |
| 357 | $nodes = $this->parseNode( $var->value->value, [ 'value', 'important' ], 0, [] ); |
| 358 | return $this->getVariableValue( $nodes[1][0] ); |
| 359 | } |
| 360 | return $this->getVariableValue( $var->value ); |
| 361 | case Less_Tree_Value::class: |
| 362 | $values = []; |
| 363 | foreach ( $var->value as $sub_value ) { |
| 364 | $values[] = $this->getVariableValue( $sub_value ); |
| 365 | } |
| 366 | return count( $values ) === 1 ? $values[0] : $values; |
| 367 | case Less_Tree_Quoted::class: |
| 368 | return $var->quote . $var->value . $var->quote; |
| 369 | case Less_Tree_Dimension::class: |
| 370 | $value = $var->value; |
| 371 | if ( $var->unit && $var->unit->numerator ) { |
| 372 | $value .= $var->unit->numerator[0]; |
| 373 | } |
| 374 | return $value; |
| 375 | case Less_Tree_Expression::class: |
| 376 | $values = []; |
| 377 | foreach ( $var->value as $item ) { |
| 378 | $values[] = $this->getVariableValue( $item ); |
| 379 | } |
| 380 | return implode( ' ', $values ); |
| 381 | case Less_Tree_Operation::class: |
| 382 | throw new Exception( 'getVariables() require Less to be compiled. please use $parser->getCss() before calling getVariables()' ); |
| 383 | case Less_Tree_Unit::class: |
| 384 | case Less_Tree_Comment::class: |
| 385 | case Less_Tree_Import::class: |
| 386 | case Less_Tree_Ruleset::class: |
| 387 | default: |
| 388 | throw new Exception( "type missing in switch/case getVariableValue for " . get_class( $var ) ); |
| 389 | } |
| 390 | } |
| 391 | |
| 392 | private function rgb2html( $r, $g = -1, $b = -1 ) { |
| 393 | if ( is_array( $r ) && count( $r ) == 3 ) { |
| 394 | [ $r, $g, $b ] = $r; |
| 395 | } |
| 396 | |
| 397 | return sprintf( '#%02x%02x%02x', $r, $g, $b ); |
| 398 | } |
| 399 | |
| 400 | /** |
| 401 | * Run pre-compile visitors |
| 402 | */ |
| 403 | private function PreVisitors( $root ) { |
| 404 | if ( self::$options['plugins'] ) { |
| 405 | foreach ( self::$options['plugins'] as $plugin ) { |
| 406 | if ( !empty( $plugin->isPreEvalVisitor ) ) { |
| 407 | $plugin->run( $root ); |
| 408 | } |
| 409 | } |
| 410 | } |
| 411 | } |
| 412 | |
| 413 | /** |
| 414 | * Run post-compile visitors |
| 415 | */ |
| 416 | private function PostVisitors( $evaldRoot ) { |
| 417 | $visitors = []; |
| 418 | $visitors[] = new Less_Visitor_joinSelector(); |
| 419 | if ( self::$has_extends ) { |
| 420 | $visitors[] = new Less_Visitor_processExtends(); |
| 421 | } |
| 422 | $visitors[] = new Less_Visitor_toCSS(); |
| 423 | |
| 424 | if ( self::$options['plugins'] ) { |
| 425 | foreach ( self::$options['plugins'] as $plugin ) { |
| 426 | if ( property_exists( $plugin, 'isPreEvalVisitor' ) && $plugin->isPreEvalVisitor ) { |
| 427 | continue; |
| 428 | } |
| 429 | |
| 430 | if ( property_exists( $plugin, 'isPreVisitor' ) && $plugin->isPreVisitor ) { |
| 431 | array_unshift( $visitors, $plugin ); |
| 432 | } else { |
| 433 | $visitors[] = $plugin; |
| 434 | } |
| 435 | } |
| 436 | } |
| 437 | |
| 438 | for ( $i = 0; $i < count( $visitors ); $i++ ) { |
| 439 | $visitors[$i]->run( $evaldRoot ); |
| 440 | } |
| 441 | } |
| 442 | |
| 443 | /** |
| 444 | * Parse a Less string |
| 445 | * |
| 446 | * @throws Less_Exception_Parser If the compiler encounters invalid syntax |
| 447 | * @param string $str The string to convert |
| 448 | * @param string|null $file_uri The url of the file |
| 449 | * @return $this |
| 450 | */ |
| 451 | public function parse( $str, $file_uri = null ) { |
| 452 | if ( !$file_uri ) { |
| 453 | $uri_root = ''; |
| 454 | $filename = 'anonymous-file-' . self::$next_id++ . '.less'; |
| 455 | } else { |
| 456 | $file_uri = self::WinPath( $file_uri ); |
| 457 | $filename = $file_uri; |
| 458 | $uri_root = dirname( $file_uri ); |
| 459 | } |
| 460 | |
| 461 | $previousFileInfo = $this->env->currentFileInfo; |
| 462 | $uri_root = self::WinPath( $uri_root ); |
| 463 | $this->SetFileInfo( $filename, $uri_root ); |
| 464 | |
| 465 | $this->input = $str; |
| 466 | $this->_parse(); |
| 467 | |
| 468 | if ( $previousFileInfo ) { |
| 469 | $this->env->currentFileInfo = $previousFileInfo; |
| 470 | } |
| 471 | |
| 472 | return $this; |
| 473 | } |
| 474 | |
| 475 | /** |
| 476 | * Parse a Less string from a given file |
| 477 | * |
| 478 | * @throws Less_Exception_Parser If the compiler encounters invalid syntax |
| 479 | * @param string $filename The file to parse |
| 480 | * @param string $uri_root The url of the file |
| 481 | * @param bool $returnRoot Indicates whether the return value should be a css string a root node |
| 482 | * @return Less_Tree_Ruleset|$this |
| 483 | */ |
| 484 | public function parseFile( $filename, $uri_root = '', $returnRoot = false ) { |
| 485 | if ( !file_exists( $filename ) ) { |
| 486 | $this->Error( sprintf( 'File `%s` not found.', $filename ) ); |
| 487 | } |
| 488 | |
| 489 | // fix uri_root? |
| 490 | // Instead of The mixture of file path for the first argument and directory path for the second argument has bee |
| 491 | if ( !$returnRoot && !empty( $uri_root ) && basename( $uri_root ) == basename( $filename ) ) { |
| 492 | $uri_root = dirname( $uri_root ); |
| 493 | } |
| 494 | |
| 495 | $previousFileInfo = $this->env->currentFileInfo; |
| 496 | |
| 497 | if ( $filename ) { |
| 498 | $filename = self::AbsPath( $filename, true ); |
| 499 | } |
| 500 | $uri_root = self::WinPath( $uri_root ); |
| 501 | |
| 502 | $this->SetFileInfo( $filename, $uri_root ); |
| 503 | |
| 504 | $this->env->addParsedFile( $filename ); |
| 505 | |
| 506 | if ( $returnRoot ) { |
| 507 | $rules = $this->GetRules( $filename ); |
| 508 | $return = new Less_Tree_Ruleset( null, $rules ); |
| 509 | } else { |
| 510 | $this->_parse( $filename ); |
| 511 | $return = $this; |
| 512 | } |
| 513 | |
| 514 | if ( $previousFileInfo ) { |
| 515 | $this->env->currentFileInfo = $previousFileInfo; |
| 516 | } |
| 517 | |
| 518 | return $return; |
| 519 | } |
| 520 | |
| 521 | /** |
| 522 | * Allows a user to set variables values |
| 523 | * @param array $vars |
| 524 | * @return $this |
| 525 | */ |
| 526 | public function ModifyVars( $vars ) { |
| 527 | $this->input = self::serializeVars( $vars ); |
| 528 | $this->_parse(); |
| 529 | |
| 530 | return $this; |
| 531 | } |
| 532 | |
| 533 | /** |
| 534 | * @param string $filename |
| 535 | * @param string $uri_root |
| 536 | */ |
| 537 | public function SetFileInfo( $filename, $uri_root = '' ) { |
| 538 | $filename = Less_Environment::normalizePath( $filename ); |
| 539 | $dirname = preg_replace( '/[^\/\\\\]*$/', '', $filename ); |
| 540 | |
| 541 | if ( !empty( $uri_root ) ) { |
| 542 | $uri_root = rtrim( $uri_root, '/' ) . '/'; |
| 543 | } |
| 544 | |
| 545 | $currentFileInfo = []; |
| 546 | |
| 547 | // entry info |
| 548 | if ( isset( $this->env->currentFileInfo ) ) { |
| 549 | $currentFileInfo['entryPath'] = $this->env->currentFileInfo['entryPath']; |
| 550 | $currentFileInfo['entryUri'] = $this->env->currentFileInfo['entryUri']; |
| 551 | $currentFileInfo['rootpath'] = $this->env->currentFileInfo['rootpath']; |
| 552 | |
| 553 | } else { |
| 554 | $currentFileInfo['entryPath'] = $dirname; |
| 555 | $currentFileInfo['entryUri'] = $uri_root; |
| 556 | $currentFileInfo['rootpath'] = $dirname; |
| 557 | } |
| 558 | |
| 559 | $currentFileInfo['currentDirectory'] = $dirname; |
| 560 | $currentFileInfo['currentUri'] = $uri_root . basename( $filename ); |
| 561 | $currentFileInfo['filename'] = $filename; |
| 562 | $currentFileInfo['uri_root'] = $uri_root; |
| 563 | |
| 564 | // inherit reference |
| 565 | if ( isset( $this->env->currentFileInfo['reference'] ) && $this->env->currentFileInfo['reference'] ) { |
| 566 | $currentFileInfo['reference'] = true; |
| 567 | } |
| 568 | |
| 569 | $this->env->currentFileInfo = $currentFileInfo; |
| 570 | } |
| 571 | |
| 572 | /** |
| 573 | * @deprecated 1.5.1.2 Use Less_Cache::SetCacheDir instead. |
| 574 | */ |
| 575 | public function SetCacheDir( $dir ) { |
| 576 | trigger_error( 'Less_Parser::SetCacheDir is deprecated, use Less_Cache::SetCacheDir instead', E_USER_DEPRECATED ); |
| 577 | Less_Cache::SetCacheDir( $dir ); |
| 578 | } |
| 579 | |
| 580 | /** |
| 581 | * Set a list of directories or callbacks the parser should use for determining import paths |
| 582 | * |
| 583 | * Import closures are called with a single `$path` argument containing the unquoted `@import` |
| 584 | * string an input LESS file. The string is unchanged, except for a statically appended ".less" |
| 585 | * suffix if the basename does not yet contain a dot. If a dot is present in the filename, you |
| 586 | * are responsible for choosing whether to expand "foo.bar" to "foo.bar.less". If your callback |
| 587 | * can handle this import statement, return an array with an absolute file path and an optional |
| 588 | * URI path, or return void/null to indicate that your callback does not handle this import |
| 589 | * statement. |
| 590 | * |
| 591 | * Example: |
| 592 | * |
| 593 | * function ( $path ) { |
| 594 | * if ( $path === 'virtual/something.less' ) { |
| 595 | * return [ '/srv/elsewhere/thing.less', null ]; |
| 596 | * } |
| 597 | * } |
| 598 | * |
| 599 | * @param array $dirs The key should be a server directory from which LESS |
| 600 | * files may be imported. The value is an optional public URL or URL base path that corresponds to |
| 601 | * the same directory (use empty string otherwise). The value may also be a closure, in |
| 602 | * which case the key is ignored. |
| 603 | * @phan-param array<string,string|callable>|callable[] $dirs |
| 604 | */ |
| 605 | public function SetImportDirs( $dirs ) { |
| 606 | self::$options['import_dirs'] = []; |
| 607 | |
| 608 | foreach ( $dirs as $path => $uri_root ) { |
| 609 | |
| 610 | if ( !is_callable( $uri_root ) ) { |
| 611 | $path = self::WinPath( $path ); |
| 612 | if ( !empty( $path ) ) { |
| 613 | $path = rtrim( $path, '/' ) . '/'; |
| 614 | } |
| 615 | |
| 616 | $uri_root = self::WinPath( $uri_root ); |
| 617 | if ( !empty( $uri_root ) ) { |
| 618 | $uri_root = rtrim( $uri_root, '/' ) . '/'; |
| 619 | } |
| 620 | } |
| 621 | |
| 622 | self::$options['import_dirs'][$path] = $uri_root; |
| 623 | } |
| 624 | } |
| 625 | |
| 626 | /** |
| 627 | * @param string|null $file_path |
| 628 | */ |
| 629 | private function _parse( $file_path = null ) { |
| 630 | $this->rules = array_merge( $this->rules, $this->GetRules( $file_path ) ); |
| 631 | } |
| 632 | |
| 633 | /** |
| 634 | * Return the results of parsePrimary for $file_path |
| 635 | * Use cache and save cached results if possible |
| 636 | * |
| 637 | * @param string|null $file_path |
| 638 | */ |
| 639 | private function GetRules( $file_path ) { |
| 640 | $this->setInput( $file_path ); |
| 641 | |
| 642 | $cache_file = $this->cacheFile( $file_path ); |
| 643 | if ( $cache_file ) { |
| 644 | if ( self::$options['cache_method'] === 'callback' ) { |
| 645 | $callback = self::$options['cache_callback_get']; |
| 646 | if ( is_callable( $callback ) ) { |
| 647 | $cache = $callback( $this, $file_path, $cache_file ); |
| 648 | if ( $cache ) { |
| 649 | $this->unsetInput(); |
| 650 | return $cache; |
| 651 | } |
| 652 | } |
| 653 | |
| 654 | } elseif ( self::$options['cache_method'] === 'serialize' && file_exists( $cache_file ) ) { |
| 655 | $cache = unserialize( file_get_contents( $cache_file ) ); |
| 656 | if ( $cache ) { |
| 657 | touch( $cache_file ); |
| 658 | $this->unsetInput(); |
| 659 | return $cache; |
| 660 | } |
| 661 | } |
| 662 | } |
| 663 | $this->skipWhitespace( 0 ); |
| 664 | $rules = $this->parsePrimary(); |
| 665 | |
| 666 | if ( $this->pos < $this->input_len ) { |
| 667 | throw new Less_Exception_Chunk( $this->input, null, $this->furthest, $this->env->currentFileInfo ); |
| 668 | } |
| 669 | |
| 670 | $this->unsetInput(); |
| 671 | |
| 672 | // save the cache |
| 673 | if ( $cache_file ) { |
| 674 | if ( self::$options['cache_method'] === 'callback' ) { |
| 675 | $callback = self::$options['cache_callback_set']; |
| 676 | if ( is_callable( $callback ) ) { |
| 677 | $callback( $this, $file_path, $cache_file, $rules ); |
| 678 | } |
| 679 | } elseif ( self::$options['cache_method'] === 'serialize' ) { |
| 680 | file_put_contents( $cache_file, serialize( $rules ) ); |
| 681 | Less_Cache::CleanCache( self::$options['cache_dir'] ); |
| 682 | } |
| 683 | } |
| 684 | |
| 685 | return $rules; |
| 686 | } |
| 687 | |
| 688 | /** |
| 689 | * @internal since 4.3.0 No longer a public API. |
| 690 | */ |
| 691 | private function setInput( $file_path ) { |
| 692 | // Set up the input buffer |
| 693 | if ( $file_path ) { |
| 694 | $this->input = file_get_contents( $file_path ); |
| 695 | } |
| 696 | |
| 697 | $this->pos = $this->furthest = 0; |
| 698 | |
| 699 | // Remove potential UTF Byte Order Mark |
| 700 | $this->input = preg_replace( '/\\G\xEF\xBB\xBF/', '', $this->input ); |
| 701 | $this->input_len = strlen( $this->input ); |
| 702 | |
| 703 | if ( self::$options['sourceMap'] && $this->env->currentFileInfo ) { |
| 704 | $uri = $this->env->currentFileInfo['currentUri']; |
| 705 | self::$contentsMap[$uri] = $this->input; |
| 706 | } |
| 707 | } |
| 708 | |
| 709 | /** |
| 710 | * @internal since 4.3.0 No longer a public API. |
| 711 | */ |
| 712 | private function unsetInput() { |
| 713 | // Free up some memory |
| 714 | $this->input = ''; |
| 715 | $this->pos = $this->input_len = $this->furthest = 0; |
| 716 | $this->saveStack = []; |
| 717 | } |
| 718 | |
| 719 | private function cacheFile( $file_path ) { |
| 720 | if ( $file_path && $this->CacheEnabled() ) { |
| 721 | $env = get_object_vars( $this->env ); |
| 722 | unset( $env['frames'] ); |
| 723 | |
| 724 | $parts = [ |
| 725 | $file_path, |
| 726 | filesize( $file_path ), |
| 727 | filemtime( $file_path ), |
| 728 | $env, |
| 729 | Less_Version::cache_version, |
| 730 | self::$options['cache_method'], |
| 731 | ]; |
| 732 | return self::$options['cache_dir'] . Less_Cache::$prefix . base_convert( sha1( json_encode( $parts ) ), 16, 36 ) . '.lesscache'; |
| 733 | } |
| 734 | } |
| 735 | |
| 736 | /** |
| 737 | * @since 4.3.0 |
| 738 | * @return string[] |
| 739 | */ |
| 740 | public function getParsedFiles() { |
| 741 | return $this->env->imports; |
| 742 | } |
| 743 | |
| 744 | /** |
| 745 | * @internal since 4.3.0 No longer a public API. |
| 746 | */ |
| 747 | private function save() { |
| 748 | $this->saveStack[] = $this->pos; |
| 749 | } |
| 750 | |
| 751 | private function restore() { |
| 752 | if ( $this->pos > $this->furthest ) { |
| 753 | $this->furthest = $this->pos; |
| 754 | } |
| 755 | $this->pos = array_pop( $this->saveStack ); |
| 756 | } |
| 757 | |
| 758 | private function forget() { |
| 759 | array_pop( $this->saveStack ); |
| 760 | } |
| 761 | |
| 762 | /** |
| 763 | * Determine if the character at the specified offset from the current position is a white space. |
| 764 | * |
| 765 | * @param int $offset |
| 766 | * @return bool |
| 767 | */ |
| 768 | private function isWhitespace( $offset = 0 ) { |
| 769 | // @phan-suppress-next-line PhanParamSuspiciousOrder False positive |
| 770 | return strpos( " \t\n\r\v\f", $this->input[$this->pos + $offset] ) !== false; |
| 771 | } |
| 772 | |
| 773 | /** |
| 774 | * Match a single character in the input. |
| 775 | * |
| 776 | * @param string $tok |
| 777 | * @return string|null |
| 778 | * @see less-2.5.3.js#parserInput.$char |
| 779 | */ |
| 780 | private function matchChar( $tok ) { |
| 781 | if ( ( $this->pos < $this->input_len ) && ( $this->input[$this->pos] === $tok ) ) { |
| 782 | $this->skipWhitespace( 1 ); |
| 783 | return $tok; |
| 784 | } |
| 785 | } |
| 786 | |
| 787 | /** |
| 788 | * Match a regexp from the current start point |
| 789 | * |
| 790 | * @return string|array|null |
| 791 | * @see less-2.5.3.js#parserInput.$re |
| 792 | */ |
| 793 | private function matchReg( $tok ) { |
| 794 | if ( preg_match( $tok, $this->input, $match, 0, $this->pos ) ) { |
| 795 | $this->skipWhitespace( strlen( $match[0] ) ); |
| 796 | return count( $match ) === 1 ? $match[0] : $match; |
| 797 | } |
| 798 | } |
| 799 | |
| 800 | /** |
| 801 | * Match an exact string of characters. |
| 802 | * |
| 803 | * @param string $tok |
| 804 | * @return string|null |
| 805 | * @see less-2.5.3.js#parserInput.$str |
| 806 | */ |
| 807 | private function matchStr( $tok ) { |
| 808 | $tokLength = strlen( $tok ); |
| 809 | if ( |
| 810 | ( $this->pos < $this->input_len ) && |
| 811 | substr( $this->input, $this->pos, $tokLength ) === $tok |
| 812 | ) { |
| 813 | $this->skipWhitespace( $tokLength ); |
| 814 | return $tok; |
| 815 | } |
| 816 | } |
| 817 | |
| 818 | /** |
| 819 | * @param int|null $loc |
| 820 | * @return array|string|void|null |
| 821 | * @see less-3.13.1.js#parserInput.$quoted |
| 822 | */ |
| 823 | private function parseQuoted( $loc = null ) { |
| 824 | $pos = $loc ?? $this->pos; |
| 825 | $startChar = $this->input[ $pos ] ?? ''; |
| 826 | if ( $startChar !== '\'' && $startChar !== '"' ) { |
| 827 | return; |
| 828 | } |
| 829 | $currentPos = $pos; |
| 830 | $i = 1; |
| 831 | while ( $currentPos + $i < $this->input_len ) { |
| 832 | // Optimization: Skip over irrelevant chars without slow loop |
| 833 | $i += strcspn( $this->input, "\n\r$startChar\\", $currentPos + $i ); |
| 834 | switch ( $this->input[$currentPos + $i++] ) { |
| 835 | case "\\": |
| 836 | $i++; |
| 837 | break; |
| 838 | case "\r": |
| 839 | case "\n": |
| 840 | break; |
| 841 | case $startChar: |
| 842 | // NOTE: Our optimization means we look ahead instead of behind, |
| 843 | // so no +1s here. |
| 844 | $str = substr( $this->input, $currentPos, $i ); |
| 845 | if ( !$loc && $loc !== 0 ) { |
| 846 | $this->skipWhitespace( $i ); |
| 847 | return $str; |
| 848 | } |
| 849 | return [ $startChar, $str ]; |
| 850 | } |
| 851 | } |
| 852 | return null; |
| 853 | } |
| 854 | |
| 855 | /** |
| 856 | * Permissive parsing. Ignores everything except matching {} [] () and quotes |
| 857 | * until matching token (outside of blocks) |
| 858 | * @see less-3.13.1.js#parserInput.$parseUntil |
| 859 | */ |
| 860 | private function parseUntil( $tok ) { |
| 861 | $quote = ''; |
| 862 | $returnVal = null; |
| 863 | $inComment = false; |
| 864 | $blockDepth = 0; |
| 865 | $blockStack = []; |
| 866 | $parseGroups = []; |
| 867 | $startPos = $this->pos; |
| 868 | $lastPos = $this->pos; |
| 869 | $i = $this->pos; |
| 870 | $loop = true; |
| 871 | if ( is_string( $tok ) ) { |
| 872 | $testChar = static function ( $char ) use ( $tok ) { |
| 873 | return $tok === $char; |
| 874 | }; |
| 875 | } else { |
| 876 | $testChar = static function ( $char ) use ( $tok ) { |
| 877 | return in_array( $char, $tok ); |
| 878 | }; |
| 879 | } |
| 880 | do { |
| 881 | $nextChar = $this->input[$i]; |
| 882 | if ( $blockDepth === 0 && $testChar( $nextChar ) ) { |
| 883 | $returnVal = substr( $this->input, $lastPos, $i - $lastPos ); |
| 884 | if ( $returnVal ) { |
| 885 | $parseGroups[] = $returnVal; |
| 886 | } else { |
| 887 | $parseGroups[] = ' '; |
| 888 | } |
| 889 | $returnVal = $parseGroups; |
| 890 | $this->skipWhitespace( $i - $startPos ); |
| 891 | $loop = false; |
| 892 | } else { |
| 893 | if ( $inComment ) { |
| 894 | if ( $nextChar === '*' && ( $this->input[$i + 1] ?? '' ) === '/' ) { |
| 895 | $i++; |
| 896 | $blockDepth--; |
| 897 | $inComment = false; |
| 898 | } |
| 899 | $i++; |
| 900 | continue; |
| 901 | } |
| 902 | switch ( $nextChar ) { |
| 903 | case '\\': |
| 904 | $i++; |
| 905 | $nextChar = $this->input[$i] ?? ''; |
| 906 | $parseGroups[] = substr( $this->input, $lastPos, $i - $lastPos + 1 ); |
| 907 | $lastPos = $i + 1; |
| 908 | break; |
| 909 | case '/': |
| 910 | if ( ( $this->input[$i + 1] ?? '' ) === '*' ) { |
| 911 | $i++; |
| 912 | $inComment = true; |
| 913 | $blockDepth++; |
| 914 | } |
| 915 | break; |
| 916 | case '\'': |
| 917 | case '"': |
| 918 | $quote = $this->parseQuoted( $i ); |
| 919 | if ( $quote ) { |
| 920 | $parseGroups[] = substr( $this->input, $lastPos, $i - $lastPos ); |
| 921 | $parseGroups[] = $quote; |
| 922 | $i += strlen( $quote[1] ) - 1; |
| 923 | $lastPos = $i + 1; |
| 924 | } else { |
| 925 | $this->skipWhitespace( $i - $startPos ); |
| 926 | $returnVal = $nextChar; |
| 927 | $loop = false; |
| 928 | } |
| 929 | break; |
| 930 | case '{': |
| 931 | $blockStack[] = '}'; |
| 932 | $blockDepth++; |
| 933 | break; |
| 934 | case '(': |
| 935 | $blockStack[] = ')'; |
| 936 | $blockDepth++; |
| 937 | break; |
| 938 | case '[': |
| 939 | $blockStack[] = ']'; |
| 940 | $blockDepth++; |
| 941 | break; |
| 942 | case '}': |
| 943 | case ')': |
| 944 | case ']': |
| 945 | $expected = array_pop( $blockStack ); |
| 946 | if ( $nextChar === $expected ) { |
| 947 | $blockDepth--; |
| 948 | } else { |
| 949 | // move the parser to the error and return expected; |
| 950 | $this->skipWhitespace( $i - $startPos ); |
| 951 | $returnVal = $expected; |
| 952 | $loop = false; |
| 953 | } |
| 954 | } |
| 955 | $i++; |
| 956 | if ( $i > $this->input_len ) { |
| 957 | $loop = false; |
| 958 | } |
| 959 | } |
| 960 | } while ( $loop ); |
| 961 | |
| 962 | return $returnVal ?: null; |
| 963 | } |
| 964 | |
| 965 | /** |
| 966 | * Same as match(), but don't change the state of the parser, |
| 967 | * just return the match. |
| 968 | * |
| 969 | * @param string $tok |
| 970 | * @return int|false |
| 971 | */ |
| 972 | private function peekReg( $tok ) { |
| 973 | return preg_match( $tok, $this->input, $match, 0, $this->pos ); |
| 974 | } |
| 975 | |
| 976 | /** |
| 977 | * @param string $tok |
| 978 | */ |
| 979 | private function peekChar( $tok ) { |
| 980 | return ( $this->pos < $this->input_len ) && ( $this->input[$this->pos] === $tok ); |
| 981 | } |
| 982 | |
| 983 | /** |
| 984 | * @param int $length |
| 985 | * @see less-2.5.3.js#skipWhitespace |
| 986 | */ |
| 987 | private function skipWhitespace( $length ) { |
| 988 | $this->pos += $length; |
| 989 | |
| 990 | for ( ; $this->pos < $this->input_len; $this->pos++ ) { |
| 991 | $currentChar = $this->input[$this->pos]; |
| 992 | |
| 993 | if ( $this->autoCommentAbsorb && $currentChar === '/' ) { |
| 994 | $nextChar = $this->input[$this->pos + 1] ?? ''; |
| 995 | if ( $nextChar === '/' ) { |
| 996 | $comment = [ 'index' => $this->pos, 'isLineComment' => true ]; |
| 997 | $nextNewLine = strpos( $this->input, "\n", $this->pos + 2 ); |
| 998 | if ( $nextNewLine === false ) { |
| 999 | $nextNewLine = $this->input_len ?? 0; |
| 1000 | } |
| 1001 | $this->pos = $nextNewLine; |
| 1002 | $comment['text'] = substr( $this->input, $this->pos, $nextNewLine - $this->pos ); |
| 1003 | $this->commentStore[] = $comment; |
| 1004 | continue; |
| 1005 | } elseif ( $nextChar === '*' ) { |
| 1006 | $nextStarSlash = strpos( $this->input, "*/", $this->pos + 2 ); |
| 1007 | if ( $nextStarSlash !== false ) { |
| 1008 | $comment = [ |
| 1009 | 'index' => $this->pos, |
| 1010 | 'text' => substr( $this->input, $this->pos, $nextStarSlash + 2 - $this->pos ), |
| 1011 | 'isLineComment' => false, |
| 1012 | ]; |
| 1013 | $this->pos += strlen( $comment['text'] ) - 1; |
| 1014 | $this->commentStore[] = $comment; |
| 1015 | continue; |
| 1016 | } |
| 1017 | } |
| 1018 | break; |
| 1019 | } |
| 1020 | |
| 1021 | // Optimization: Skip over irrelevant chars without slow loop |
| 1022 | $skip = strspn( $this->input, " \n\t\r", $this->pos ); |
| 1023 | if ( $skip ) { |
| 1024 | $this->pos += $skip - 1; |
| 1025 | } |
| 1026 | if ( !$skip && $this->pos < $this->input_len ) { |
| 1027 | break; |
| 1028 | } |
| 1029 | } |
| 1030 | } |
| 1031 | |
| 1032 | /** |
| 1033 | * Parse a token from a regexp or method name string |
| 1034 | * |
| 1035 | * @param string $tok |
| 1036 | * @param string|null $msg |
| 1037 | * @return string|array|never |
| 1038 | * @see less-3.13.1.js#Parser.expect |
| 1039 | */ |
| 1040 | private function expect( $tok, $msg = null ) { |
| 1041 | $result = $this->matchReg( $tok ); |
| 1042 | if ( $result ) { |
| 1043 | return $result; |
| 1044 | } |
| 1045 | $this->Error( $msg ?? "expected '" . $tok . "' got '" . $this->input[$this->pos] . "'" ); |
| 1046 | } |
| 1047 | |
| 1048 | /** |
| 1049 | * @param string $tok |
| 1050 | * @param string|null $msg |
| 1051 | */ |
| 1052 | private function expectChar( $tok, $msg = null ) { |
| 1053 | $result = $this->matchChar( $tok ); |
| 1054 | if ( !$result ) { |
| 1055 | $msg = $msg ?: "Expected '" . $tok . "' got '" . $this->input[$this->pos] . "'"; |
| 1056 | $this->Error( $msg ); |
| 1057 | } else { |
| 1058 | return $result; |
| 1059 | } |
| 1060 | } |
| 1061 | |
| 1062 | /** |
| 1063 | * @param string $str |
| 1064 | * @see less-3.13.1.js#ParserInput.start |
| 1065 | */ |
| 1066 | private function parserInputStart( $str ) { |
| 1067 | $this->pos = $this->furthest = 0; |
| 1068 | $this->input = $str; |
| 1069 | $this->input_len = strlen( $str ); |
| 1070 | $this->skipWhitespace( 0 ); |
| 1071 | } |
| 1072 | |
| 1073 | /** |
| 1074 | * Used after initial parsing to create nodes on the fly |
| 1075 | * |
| 1076 | * @param string $str string to parse |
| 1077 | * @param string[] $parseList array of parsers to run input through e.g. ["value", "important"] |
| 1078 | * @param int $currentIndex start number to begin indexing |
| 1079 | * @param array $fileInfo fileInfo to attach to created nodes |
| 1080 | * @return array |
| 1081 | * @see less-3.13.1.js#Parser.parseNode |
| 1082 | */ |
| 1083 | public function parseNode( $str, array $parseList, $currentIndex, $fileInfo ) { |
| 1084 | $returnNodes = []; |
| 1085 | try { |
| 1086 | $this->parserInputStart( $str ); |
| 1087 | foreach ( $parseList as $p ) { |
| 1088 | $i = $this->pos; |
| 1089 | $method = 'parse' . ucfirst( $p ); |
| 1090 | if ( !method_exists( $this, $method ) ) { |
| 1091 | throw new CompileError( 'Unknown parser ' . $p ); |
| 1092 | } |
| 1093 | $result = $this->$method(); |
| 1094 | if ( $result ) { |
| 1095 | $result->index = $i + $currentIndex; |
| 1096 | $result->currentFileInfo = $fileInfo; |
| 1097 | $returnNodes[] = $result; |
| 1098 | } else { |
| 1099 | $returnNodes[] = null; |
| 1100 | } |
| 1101 | } |
| 1102 | if ( $this->pos >= $this->input_len ) { |
| 1103 | return [ null, $returnNodes ]; |
| 1104 | } else { |
| 1105 | return [ true, null ]; |
| 1106 | } |
| 1107 | } catch ( Less_Exception_Parser $e ) { |
| 1108 | throw new Less_Exception_Parser( |
| 1109 | $e->getMessage(), |
| 1110 | $e, |
| 1111 | ( $e->index ?? 0 ) + $currentIndex, |
| 1112 | $fileInfo |
| 1113 | ); |
| 1114 | } |
| 1115 | } |
| 1116 | |
| 1117 | // |
| 1118 | // Here in, the parsing rules/functions |
| 1119 | // |
| 1120 | // The basic structure of the syntax tree generated is as follows: |
| 1121 | // |
| 1122 | // Ruleset -> Declaration -> Value -> Expression -> Entity |
| 1123 | // |
| 1124 | // Here's some LESS code: |
| 1125 | // |
| 1126 | // .class { |
| 1127 | // color: #fff; |
| 1128 | // border: 1px solid #000; |
| 1129 | // width: @w + 4px; |
| 1130 | // > .child {...} |
| 1131 | // } |
| 1132 | // |
| 1133 | // And here's what the parse tree might look like: |
| 1134 | // |
| 1135 | // Ruleset (Selector '.class', [ |
| 1136 | // Declaration ("color", Value ([Expression [Color #fff]])) |
| 1137 | // Declaration ("border", Value ([Expression [Dimension 1px][Keyword "solid"][Color #000]])) |
| 1138 | // Declaration ("width", Value ([Expression [Operation "+" [Variable "@w"][Dimension 4px]]])) |
| 1139 | // Ruleset (Selector [Element '>', '.child'], [...]) |
| 1140 | // ]) |
| 1141 | // |
| 1142 | // In general, most rules will try to parse a token with the `$()` function, and if the return |
| 1143 | // value is truly, will return a new node, of the relevant type. Sometimes, we need to check |
| 1144 | // first, before parsing, that's when we use `peek()`. |
| 1145 | // |
| 1146 | |
| 1147 | // |
| 1148 | // The `primary` rule is the *entry* and *exit* point of the parser. |
| 1149 | // The rules here can appear at any level of the parse tree. |
| 1150 | // |
| 1151 | // The recursive nature of the grammar is an interplay between the `block` |
| 1152 | // rule, which represents `{ ... }`, the `ruleset` rule, and this `primary` rule, |
| 1153 | // as represented by this simplified grammar: |
| 1154 | // |
| 1155 | // primary → (ruleset | declaration )+ |
| 1156 | // ruleset → selector+ block |
| 1157 | // block → '{' primary '}' |
| 1158 | // |
| 1159 | // Only at one point is the primary rule not called from the |
| 1160 | // block rule: at the root level. |
| 1161 | // |
| 1162 | // @see less-2.5.3.js#parsers.primary |
| 1163 | private function parsePrimary() { |
| 1164 | $root = []; |
| 1165 | |
| 1166 | while ( true ) { |
| 1167 | |
| 1168 | while ( true ) { |
| 1169 | $node = $this->parseComment(); |
| 1170 | if ( !$node ) { |
| 1171 | break; |
| 1172 | } |
| 1173 | $root[] = $node; |
| 1174 | } |
| 1175 | |
| 1176 | // always process comments before deciding if finished |
| 1177 | if ( $this->pos >= $this->input_len ) { |
| 1178 | break; |
| 1179 | } |
| 1180 | |
| 1181 | if ( $this->peekChar( '}' ) ) { |
| 1182 | break; |
| 1183 | } |
| 1184 | |
| 1185 | $node = $this->parseExtend( true ); |
| 1186 | if ( $node ) { |
| 1187 | $root = array_merge( $root, $node ); |
| 1188 | continue; |
| 1189 | } |
| 1190 | |