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<?php |
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/** |
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* SCSSPHP |
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* |
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* @copyright 2012-2018 Leaf Corcoran |
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* |
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* @license http://opensource.org/licenses/MIT MIT |
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* |
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* @link http://leafo.github.io/scssphp |
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*/ |
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namespace Leafo\ScssPhp; |
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use Leafo\ScssPhp\Block; |
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use Leafo\ScssPhp\Compiler; |
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use Leafo\ScssPhp\Exception\ParserException; |
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use Leafo\ScssPhp\Node; |
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use Leafo\ScssPhp\Type; |
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/** |
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* Parser |
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* |
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* @author Leaf Corcoran <[email protected]> |
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*/ |
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class Parser |
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{ |
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const SOURCE_INDEX = -1; |
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const SOURCE_LINE = -2; |
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const SOURCE_COLUMN = -3; |
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/** |
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* @var array |
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*/ |
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protected static $precedence = [ |
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'=' => 0, |
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'or' => 1, |
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'and' => 2, |
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'==' => 3, |
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'!=' => 3, |
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'<=>' => 3, |
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'<=' => 4, |
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'>=' => 4, |
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'<' => 4, |
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'>' => 4, |
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'+' => 5, |
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'-' => 5, |
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'*' => 6, |
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'/' => 6, |
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'%' => 6, |
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]; |
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protected static $commentPattern; |
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protected static $operatorPattern; |
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protected static $whitePattern; |
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private $sourceName; |
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private $sourceIndex; |
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private $sourcePositions; |
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private $charset; |
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private $count; |
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private $env; |
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private $inParens; |
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private $eatWhiteDefault; |
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private $buffer; |
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private $utf8; |
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private $encoding; |
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private $patternModifiers; |
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/** |
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* Constructor |
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* |
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* @api |
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* |
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* @param string $sourceName |
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* @param integer $sourceIndex |
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* @param string $encoding |
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*/ |
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public function __construct($sourceName, $sourceIndex = 0, $encoding = 'utf-8') |
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{ |
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$this->sourceName = $sourceName ?: '(stdin)'; |
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$this->sourceIndex = $sourceIndex; |
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$this->charset = null; |
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$this->utf8 = ! $encoding || strtolower($encoding) === 'utf-8'; |
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$this->patternModifiers = $this->utf8 ? 'Aisu' : 'Ais'; |
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if (empty(static::$operatorPattern)) { |
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static::$operatorPattern = '([*\/%+-]|[!=]\=|\>\=?|\<\=\>|\<\=?|and|or)'; |
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$commentSingle = '\/\/'; |
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$commentMultiLeft = '\/\*'; |
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$commentMultiRight = '\*\/'; |
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static::$commentPattern = $commentMultiLeft . '.*?' . $commentMultiRight; |
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static::$whitePattern = $this->utf8 |
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? '/' . $commentSingle . '[^\n]*\s*|(' . static::$commentPattern . ')\s*|\s+/AisuS' |
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: '/' . $commentSingle . '[^\n]*\s*|(' . static::$commentPattern . ')\s*|\s+/AisS'; |
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} |
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} |
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/** |
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* Get source file name |
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* |
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* @api |
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* |
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* @return string |
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*/ |
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public function getSourceName() |
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{ |
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return $this->sourceName; |
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} |
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/** |
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* Throw parser error |
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* |
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* @api |
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* |
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* @param string $msg |
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* |
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* @throws \Leafo\ScssPhp\Exception\ParserException |
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*/ |
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public function throwParseError($msg = 'parse error') |
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{ |
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list($line, /* $column */) = $this->getSourcePosition($this->count); |
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$loc = empty($this->sourceName) ? "line: $line" : "$this->sourceName on line $line"; |
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if ($this->peek("(.*?)(\n|$)", $m, $this->count)) { |
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throw new ParserException("$msg: failed at `$m[1]` $loc"); |
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} |
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throw new ParserException("$msg: $loc"); |
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} |
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/** |
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* Parser buffer |
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* |
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* @api |
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* |
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* @param string $buffer |
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* |
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* @return \Leafo\ScssPhp\Block |
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*/ |
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public function parse($buffer) |
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{ |
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// strip BOM (byte order marker) |
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if (substr($buffer, 0, 3) === "\xef\xbb\xbf") { |
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$buffer = substr($buffer, 3); |
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} |
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$this->buffer = rtrim($buffer, "\x00..\x1f"); |
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$this->count = 0; |
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$this->env = null; |
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$this->inParens = false; |
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$this->eatWhiteDefault = true; |
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$this->saveEncoding(); |
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$this->extractLineNumbers($buffer); |
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$this->pushBlock(null); // root block |
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$this->whitespace(); |
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$this->pushBlock(null); |
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$this->popBlock(); |
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while ($this->parseChunk()) { |
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; |
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} |
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if ($this->count !== strlen($this->buffer)) { |
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$this->throwParseError(); |
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} |
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if (! empty($this->env->parent)) { |
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$this->throwParseError('unclosed block'); |
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} |
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if ($this->charset) { |
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array_unshift($this->env->children, $this->charset); |
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} |
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$this->env->isRoot = true; |
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$this->restoreEncoding(); |
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return $this->env; |
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} |
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/** |
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* Parse a value or value list |
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* |
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* @api |
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* |
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* @param string $buffer |
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* @param string $out |
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* |
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* @return boolean |
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*/ |
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public function parseValue($buffer, &$out) |
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{ |
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$this->count = 0; |
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$this->env = null; |
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$this->inParens = false; |
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$this->eatWhiteDefault = true; |
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$this->buffer = (string) $buffer; |
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$this->saveEncoding(); |
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$list = $this->valueList($out); |
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$this->restoreEncoding(); |
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return $list; |
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} |
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/** |
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* Parse a selector or selector list |
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* |
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* @api |
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* |
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* @param string $buffer |
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* @param string $out |
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* |
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* @return boolean |
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*/ |
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public function parseSelector($buffer, &$out) |
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{ |
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$this->count = 0; |
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$this->env = null; |
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$this->inParens = false; |
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$this->eatWhiteDefault = true; |
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$this->buffer = (string) $buffer; |
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$this->saveEncoding(); |
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$selector = $this->selectors($out); |
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$this->restoreEncoding(); |
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return $selector; |
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} |
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/** |
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* Parse a single chunk off the head of the buffer and append it to the |
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* current parse environment. |
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* |
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* Returns false when the buffer is empty, or when there is an error. |
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* |
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* This function is called repeatedly until the entire document is |
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* parsed. |
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* |
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* This parser is most similar to a recursive descent parser. Single |
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* functions represent discrete grammatical rules for the language, and |
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* they are able to capture the text that represents those rules. |
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* |
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* Consider the function Compiler::keyword(). (All parse functions are |
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* structured the same.) |
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* |
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* The function takes a single reference argument. When calling the |
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* function it will attempt to match a keyword on the head of the buffer. |
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* If it is successful, it will place the keyword in the referenced |
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* argument, advance the position in the buffer, and return true. If it |
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* fails then it won't advance the buffer and it will return false. |
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* |
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* All of these parse functions are powered by Compiler::match(), which behaves |
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* the same way, but takes a literal regular expression. Sometimes it is |
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* more convenient to use match instead of creating a new function. |
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* |
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* Because of the format of the functions, to parse an entire string of |
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* grammatical rules, you can chain them together using &&. |
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* |
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* But, if some of the rules in the chain succeed before one fails, then |
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* the buffer position will be left at an invalid state. In order to |
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* avoid this, Compiler::seek() is used to remember and set buffer positions. |
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* |
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* Before parsing a chain, use $s = $this->seek() to remember the current |
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* position into $s. Then if a chain fails, use $this->seek($s) to |
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* go back where we started. |
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* |
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* @return boolean |
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*/ |
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280
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protected function parseChunk() |
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281
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{ |
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$s = $this->seek(); |
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284
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// the directives |
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285
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if (isset($this->buffer[$this->count]) && $this->buffer[$this->count] === '@') { |
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286
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if ($this->literal('@at-root') && |
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287
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($this->selectors($selector) || true) && |
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($this->map($with) || true) && |
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289
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$this->literal('{') |
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) { |
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$atRoot = $this->pushSpecialBlock(Type::T_AT_ROOT, $s); |
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$atRoot->selector = $selector; |
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$atRoot->with = $with; |
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295
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return true; |
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296
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} |
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297
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298
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$this->seek($s); |
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299
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300
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if ($this->literal('@media') && $this->mediaQueryList($mediaQueryList) && $this->literal('{')) { |
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301
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$media = $this->pushSpecialBlock(Type::T_MEDIA, $s); |
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302
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$media->queryList = $mediaQueryList[2]; |
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303
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304
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return true; |
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305
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} |
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306
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307
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$this->seek($s); |
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308
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309
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if ($this->literal('@mixin') && |
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310
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$this->keyword($mixinName) && |
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($this->argumentDef($args) || true) && |
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$this->literal('{') |
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) { |
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$mixin = $this->pushSpecialBlock(Type::T_MIXIN, $s); |
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$mixin->name = $mixinName; |
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$mixin->args = $args; |
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318
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return true; |
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319
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} |
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320
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321
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$this->seek($s); |
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322
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323
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if ($this->literal('@include') && |
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324
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$this->keyword($mixinName) && |
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325
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($this->literal('(') && |
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326
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($this->argValues($argValues) || true) && |
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327
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$this->literal(')') || true) && |
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328
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($this->end() || |
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329
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$this->literal('{') && $hasBlock = true) |
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330
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) { |
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331
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$child = [Type::T_INCLUDE, $mixinName, isset($argValues) ? $argValues : null, null]; |
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332
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333
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|
|
if (! empty($hasBlock)) { |
|
334
|
|
|
$include = $this->pushSpecialBlock(Type::T_INCLUDE, $s); |
|
335
|
|
|
$include->child = $child; |
|
336
|
|
|
} else { |
|
337
|
|
|
$this->append($child, $s); |
|
338
|
|
|
} |
|
339
|
|
|
|
|
340
|
|
|
return true; |
|
341
|
|
|
} |
|
342
|
|
|
|
|
|
|
|
|
|
343
|
|
|
$this->seek($s); |
|
|
|
|
|
|
344
|
|
|
|
|
345
|
|
|
if ($this->literal('@scssphp-import-once') && |
|
346
|
|
|
$this->valueList($importPath) && |
|
347
|
|
|
$this->end() |
|
348
|
|
|
) { |
|
349
|
|
|
$this->append([Type::T_SCSSPHP_IMPORT_ONCE, $importPath], $s); |
|
350
|
|
|
|
|
351
|
|
|
return true; |
|
352
|
|
|
} |
|
353
|
|
|
|
|
354
|
|
|
$this->seek($s); |
|
355
|
|
|
|
|
356
|
|
|
if ($this->literal('@import') && |
|
357
|
|
|
$this->valueList($importPath) && |
|
358
|
|
|
$this->end() |
|
359
|
|
|
) { |
|
360
|
|
|
$this->append([Type::T_IMPORT, $importPath], $s); |
|
361
|
|
|
|
|
362
|
|
|
return true; |
|
|
|
|
|
|
363
|
|
|
} |
|
364
|
|
|
|
|
365
|
|
|
$this->seek($s); |
|
366
|
|
|
|
|
367
|
|
|
if ($this->literal('@import') && |
|
368
|
|
|
$this->url($importPath) && |
|
369
|
|
|
$this->end() |
|
370
|
|
|
) { |
|
371
|
|
|
$this->append([Type::T_IMPORT, $importPath], $s); |
|
372
|
|
|
|
|
373
|
|
|
return true; |
|
374
|
|
|
} |
|
375
|
|
|
|
|
376
|
|
|
$this->seek($s); |
|
377
|
|
|
|
|
378
|
|
|
if ($this->literal('@extend') && |
|
379
|
|
|
$this->selectors($selectors) && |
|
380
|
|
|
$this->end() |
|
381
|
|
|
) { |
|
382
|
|
|
// check for '!flag' |
|
383
|
|
|
$optional = $this->stripOptionalFlag($selectors); |
|
384
|
|
|
$this->append([Type::T_EXTEND, $selectors, $optional], $s); |
|
385
|
|
|
|
|
386
|
|
|
return true; |
|
387
|
|
|
} |
|
388
|
|
|
|
|
389
|
|
|
$this->seek($s); |
|
390
|
|
|
|
|
391
|
|
|
if ($this->literal('@function') && |
|
392
|
|
|
$this->keyword($fnName) && |
|
393
|
|
|
$this->argumentDef($args) && |
|
394
|
|
|
$this->literal('{') |
|
395
|
|
|
) { |
|
396
|
|
|
$func = $this->pushSpecialBlock(Type::T_FUNCTION, $s); |
|
397
|
|
|
$func->name = $fnName; |
|
398
|
|
|
$func->args = $args; |
|
399
|
|
|
|
|
400
|
|
|
return true; |
|
401
|
|
|
} |
|
402
|
|
|
|
|
403
|
|
|
$this->seek($s); |
|
404
|
|
|
|
|
405
|
|
|
if ($this->literal('@break') && $this->end()) { |
|
406
|
|
|
$this->append([Type::T_BREAK], $s); |
|
407
|
|
|
|
|
408
|
|
|
return true; |
|
409
|
|
|
} |
|
410
|
|
|
|
|
411
|
|
|
$this->seek($s); |
|
412
|
|
|
|
|
413
|
|
|
if ($this->literal('@continue') && $this->end()) { |
|
414
|
|
|
$this->append([Type::T_CONTINUE], $s); |
|
415
|
|
|
|
|
416
|
|
|
return true; |
|
417
|
|
|
} |
|
418
|
|
|
|
|
419
|
|
|
$this->seek($s); |
|
420
|
|
|
|
|
421
|
|
|
|
|
422
|
|
|
if ($this->literal('@return') && ($this->valueList($retVal) || true) && $this->end()) { |
|
423
|
|
|
$this->append([Type::T_RETURN, isset($retVal) ? $retVal : [Type::T_NULL]], $s); |
|
424
|
|
|
|
|
425
|
|
|
return true; |
|
426
|
|
|
} |
|
427
|
|
|
|
|
428
|
|
|
$this->seek($s); |
|
429
|
|
|
|
|
430
|
|
|
if ($this->literal('@each') && |
|
431
|
|
|
$this->genericList($varNames, 'variable', ',', false) && |
|
432
|
|
|
$this->literal('in') && |
|
433
|
|
|
$this->valueList($list) && |
|
434
|
|
|
$this->literal('{') |
|
435
|
|
|
) { |
|
436
|
|
|
$each = $this->pushSpecialBlock(Type::T_EACH, $s); |
|
437
|
|
|
|
|
438
|
|
|
foreach ($varNames[2] as $varName) { |
|
439
|
|
|
$each->vars[] = $varName[1]; |
|
440
|
|
|
} |
|
441
|
|
|
|
|
442
|
|
|
$each->list = $list; |
|
443
|
|
|
|
|
444
|
|
|
return true; |
|
445
|
|
|
} |
|
446
|
|
|
|
|
447
|
|
|
$this->seek($s); |
|
448
|
|
|
|
|
449
|
|
|
if ($this->literal('@while') && |
|
450
|
|
|
$this->expression($cond) && |
|
451
|
|
|
$this->literal('{') |
|
452
|
|
|
) { |
|
453
|
|
|
$while = $this->pushSpecialBlock(Type::T_WHILE, $s); |
|
454
|
|
|
$while->cond = $cond; |
|
455
|
|
|
|
|
456
|
|
|
return true; |
|
457
|
|
|
} |
|
458
|
|
|
|
|
459
|
|
|
$this->seek($s); |
|
460
|
|
|
|
|
461
|
|
|
if ($this->literal('@for') && |
|
462
|
|
|
$this->variable($varName) && |
|
463
|
|
|
$this->literal('from') && |
|
464
|
|
|
$this->expression($start) && |
|
465
|
|
|
($this->literal('through') || |
|
|
|
|
|
|
466
|
|
|
($forUntil = true && $this->literal('to'))) && |
|
467
|
|
|
$this->expression($end) && |
|
468
|
|
|
$this->literal('{') |
|
|
|
|
|
|
469
|
|
|
) { |
|
470
|
|
|
$for = $this->pushSpecialBlock(Type::T_FOR, $s); |
|
471
|
|
|
$for->var = $varName[1]; |
|
472
|
|
|
$for->start = $start; |
|
473
|
|
|
$for->end = $end; |
|
474
|
|
|
$for->until = isset($forUntil); |
|
475
|
|
|
|
|
476
|
|
|
return true; |
|
477
|
|
|
} |
|
478
|
|
|
|
|
479
|
|
|
$this->seek($s); |
|
480
|
|
|
|
|
|
|
|
|
|
481
|
|
|
if ($this->literal('@if') && $this->valueList($cond) && $this->literal('{')) { |
|
482
|
|
|
$if = $this->pushSpecialBlock(Type::T_IF, $s); |
|
483
|
|
|
$if->cond = $cond; |
|
484
|
|
|
$if->cases = []; |
|
485
|
|
|
|
|
486
|
|
|
return true; |
|
487
|
|
|
} |
|
488
|
|
|
|
|
489
|
|
|
$this->seek($s); |
|
490
|
|
|
|
|
491
|
|
|
if ($this->literal('@debug') && |
|
492
|
|
|
$this->valueList($value) && |
|
493
|
|
|
$this->end() |
|
494
|
|
|
) { |
|
495
|
|
|
$this->append([Type::T_DEBUG, $value], $s); |
|
496
|
|
|
|
|
497
|
|
|
return true; |
|
|
|
|
|
|
498
|
|
|
} |
|
|
|
|
|
|
499
|
|
|
|
|
|
|
|
|
|
500
|
|
|
$this->seek($s); |
|
|
|
|
|
|
501
|
|
|
|
|
502
|
|
|
if ($this->literal('@warn') && |
|
503
|
|
|
$this->valueList($value) && |
|
504
|
|
|
$this->end() |
|
505
|
|
|
) { |
|
506
|
|
|
$this->append([Type::T_WARN, $value], $s); |
|
507
|
|
|
|
|
508
|
|
|
return true; |
|
509
|
|
|
} |
|
510
|
|
|
|
|
|
|
|
|
|
511
|
|
|
$this->seek($s); |
|
512
|
|
|
|
|
513
|
|
|
if ($this->literal('@error') && |
|
514
|
|
|
$this->valueList($value) && |
|
515
|
|
|
$this->end() |
|
516
|
|
|
) { |
|
517
|
|
|
$this->append([Type::T_ERROR, $value], $s); |
|
518
|
|
|
|
|
519
|
|
|
return true; |
|
520
|
|
|
} |
|
521
|
|
|
|
|
522
|
|
|
$this->seek($s); |
|
523
|
|
|
|
|
524
|
|
|
if ($this->literal('@content') && $this->end()) { |
|
525
|
|
|
$this->append([Type::T_MIXIN_CONTENT], $s); |
|
526
|
|
|
|
|
527
|
|
|
return true; |
|
528
|
|
|
} |
|
529
|
|
|
|
|
530
|
|
|
$this->seek($s); |
|
531
|
|
|
|
|
532
|
|
|
$last = $this->last(); |
|
533
|
|
|
|
|
534
|
|
|
if (isset($last) && $last[0] === Type::T_IF) { |
|
535
|
|
|
list(, $if) = $last; |
|
536
|
|
|
|
|
537
|
|
|
if ($this->literal('@else')) { |
|
538
|
|
|
if ($this->literal('{')) { |
|
539
|
|
|
$else = $this->pushSpecialBlock(Type::T_ELSE, $s); |
|
540
|
|
|
} elseif ($this->literal('if') && $this->valueList($cond) && $this->literal('{')) { |
|
541
|
|
|
$else = $this->pushSpecialBlock(Type::T_ELSEIF, $s); |
|
542
|
|
|
$else->cond = $cond; |
|
543
|
|
|
} |
|
544
|
|
|
|
|
545
|
|
|
if (isset($else)) { |
|
546
|
|
|
$else->dontAppend = true; |
|
547
|
|
|
$if->cases[] = $else; |
|
548
|
|
|
|
|
549
|
|
|
return true; |
|
550
|
|
|
} |
|
551
|
|
|
} |
|
552
|
|
|
|
|
553
|
|
|
$this->seek($s); |
|
554
|
|
|
} |
|
555
|
|
|
|
|
556
|
|
|
// only retain the first @charset directive encountered |
|
557
|
|
|
if ($this->literal('@charset') && |
|
558
|
|
|
$this->valueList($charset) && |
|
559
|
|
|
$this->end() |
|
560
|
|
|
) { |
|
561
|
|
|
if (! isset($this->charset)) { |
|
562
|
|
|
$statement = [Type::T_CHARSET, $charset]; |
|
563
|
|
|
|
|
564
|
|
|
list($line, $column) = $this->getSourcePosition($s); |
|
565
|
|
|
|
|
566
|
|
|
$statement[static::SOURCE_LINE] = $line; |
|
567
|
|
|
$statement[static::SOURCE_COLUMN] = $column; |
|
568
|
|
|
$statement[static::SOURCE_INDEX] = $this->sourceIndex; |
|
569
|
|
|
|
|
570
|
|
|
$this->charset = $statement; |
|
571
|
|
|
} |
|
572
|
|
|
|
|
573
|
|
|
return true; |
|
574
|
|
|
} |
|
575
|
|
|
|
|
576
|
|
|
$this->seek($s); |
|
577
|
|
|
|
|
578
|
|
|
// doesn't match built in directive, do generic one |
|
579
|
|
|
if ($this->literal('@', false) && |
|
580
|
|
|
$this->keyword($dirName) && |
|
581
|
|
|
($this->variable($dirValue) || $this->openString('{', $dirValue) || true) && |
|
582
|
|
|
$this->literal('{') |
|
583
|
|
|
) { |
|
584
|
|
|
if ($dirName === 'media') { |
|
585
|
|
|
$directive = $this->pushSpecialBlock(Type::T_MEDIA, $s); |
|
586
|
|
|
} else { |
|
587
|
|
|
$directive = $this->pushSpecialBlock(Type::T_DIRECTIVE, $s); |
|
588
|
|
|
$directive->name = $dirName; |
|
589
|
|
|
} |
|
590
|
|
|
|
|
591
|
|
|
if (isset($dirValue)) { |
|
592
|
|
|
$directive->value = $dirValue; |
|
593
|
|
|
} |
|
594
|
|
|
|
|
595
|
|
|
return true; |
|
596
|
|
|
} |
|
597
|
|
|
|
|
598
|
|
|
$this->seek($s); |
|
599
|
|
|
|
|
600
|
|
|
return false; |
|
601
|
|
|
} |
|
602
|
|
|
|
|
603
|
|
|
// property shortcut |
|
604
|
|
|
// captures most properties before having to parse a selector |
|
605
|
|
|
if ($this->keyword($name, false) && |
|
606
|
|
|
$this->literal(': ') && |
|
607
|
|
|
$this->valueList($value) && |
|
608
|
|
|
$this->end() |
|
609
|
|
|
) { |
|
610
|
|
|
$name = [Type::T_STRING, '', [$name]]; |
|
611
|
|
|
$this->append([Type::T_ASSIGN, $name, $value], $s); |
|
612
|
|
|
|
|
613
|
|
|
return true; |
|
614
|
|
|
} |
|
615
|
|
|
|
|
616
|
|
|
$this->seek($s); |
|
617
|
|
|
|
|
618
|
|
|
// variable assigns |
|
|
|
|
|
|
619
|
|
|
if ($this->variable($name) && |
|
620
|
|
|
$this->literal(':') && |
|
621
|
|
|
$this->valueList($value) && |
|
622
|
|
|
$this->end() |
|
623
|
|
|
) { |
|
624
|
|
|
// check for '!flag' |
|
625
|
|
|
$assignmentFlags = $this->stripAssignmentFlags($value); |
|
626
|
|
|
$this->append([Type::T_ASSIGN, $name, $value, $assignmentFlags], $s); |
|
627
|
|
|
|
|
628
|
|
|
return true; |
|
629
|
|
|
} |
|
630
|
|
|
|
|
631
|
|
|
$this->seek($s); |
|
632
|
|
|
|
|
633
|
|
|
// misc |
|
634
|
|
|
if ($this->literal('-->')) { |
|
635
|
|
|
return true; |
|
636
|
|
|
} |
|
637
|
|
|
|
|
638
|
|
|
// opening css block |
|
639
|
|
|
if ($this->selectors($selectors) && $this->literal('{')) { |
|
640
|
|
|
$this->pushBlock($selectors, $s); |
|
641
|
|
|
|
|
642
|
|
|
return true; |
|
643
|
|
|
} |
|
644
|
|
|
|
|
645
|
|
|
$this->seek($s); |
|
646
|
|
|
|
|
647
|
|
|
// property assign, or nested assign |
|
648
|
|
|
if ($this->propertyName($name) && $this->literal(':')) { |
|
649
|
|
|
$foundSomething = false; |
|
650
|
|
|
|
|
651
|
|
|
if ($this->valueList($value)) { |
|
652
|
|
|
$this->append([Type::T_ASSIGN, $name, $value], $s); |
|
653
|
|
|
$foundSomething = true; |
|
654
|
|
|
} |
|
655
|
|
|
|
|
656
|
|
|
if ($this->literal('{')) { |
|
657
|
|
|
$propBlock = $this->pushSpecialBlock(Type::T_NESTED_PROPERTY, $s); |
|
658
|
|
|
$propBlock->prefix = $name; |
|
659
|
|
|
$foundSomething = true; |
|
660
|
|
|
} elseif ($foundSomething) { |
|
661
|
|
|
$foundSomething = $this->end(); |
|
662
|
|
|
} |
|
663
|
|
|
|
|
664
|
|
|
if ($foundSomething) { |
|
665
|
|
|
return true; |
|
666
|
|
|
} |
|
667
|
|
|
} |
|
668
|
|
|
|
|
669
|
|
|
$this->seek($s); |
|
670
|
|
|
|
|
671
|
|
|
// closing a block |
|
672
|
|
|
if ($this->literal('}')) { |
|
673
|
|
|
$block = $this->popBlock(); |
|
674
|
|
|
|
|
675
|
|
|
if (isset($block->type) && $block->type === Type::T_INCLUDE) { |
|
676
|
|
|
$include = $block->child; |
|
677
|
|
|
unset($block->child); |
|
678
|
|
|
$include[3] = $block; |
|
679
|
|
|
$this->append($include, $s); |
|
680
|
|
|
} elseif (empty($block->dontAppend)) { |
|
681
|
|
|
$type = isset($block->type) ? $block->type : Type::T_BLOCK; |
|
682
|
|
|
$this->append([$type, $block], $s); |
|
683
|
|
|
} |
|
684
|
|
|
|
|
685
|
|
|
return true; |
|
686
|
|
|
} |
|
687
|
|
|
|
|
688
|
|
|
// extra stuff |
|
689
|
|
|
if ($this->literal(';') || |
|
690
|
|
|
$this->literal('<!--') |
|
691
|
|
|
) { |
|
692
|
|
|
return true; |
|
693
|
|
|
} |
|
|
|
|
|
|
694
|
|
|
|
|
695
|
|
|
return false; |
|
696
|
|
|
} |
|
697
|
|
|
|
|
698
|
|
|
/** |
|
699
|
|
|
* Push block onto parse tree |
|
700
|
|
|
* |
|
701
|
|
|
* @param array $selectors |
|
702
|
|
|
* @param integer $pos |
|
703
|
|
|
* |
|
704
|
|
|
* @return \Leafo\ScssPhp\Block |
|
705
|
|
|
*/ |
|
706
|
|
|
protected function pushBlock($selectors, $pos = 0) |
|
707
|
|
|
{ |
|
708
|
|
|
list($line, $column) = $this->getSourcePosition($pos); |
|
709
|
|
|
|
|
710
|
|
|
$b = new Block; |
|
711
|
|
|
$b->sourceName = $this->sourceName; |
|
712
|
|
|
$b->sourceLine = $line; |
|
713
|
|
|
$b->sourceColumn = $column; |
|
714
|
|
|
$b->sourceIndex = $this->sourceIndex; |
|
715
|
|
|
$b->selectors = $selectors; |
|
716
|
|
|
$b->comments = []; |
|
717
|
|
|
$b->parent = $this->env; |
|
718
|
|
|
|
|
719
|
|
|
if (! $this->env) { |
|
720
|
|
|
$b->children = []; |
|
721
|
|
|
} elseif (empty($this->env->children)) { |
|
722
|
|
|
$this->env->children = $this->env->comments; |
|
723
|
|
|
$b->children = []; |
|
724
|
|
|
$this->env->comments = []; |
|
725
|
|
|
} else { |
|
726
|
|
|
$b->children = $this->env->comments; |
|
727
|
|
|
$this->env->comments = []; |
|
728
|
|
|
} |
|
729
|
|
|
|
|
730
|
|
|
$this->env = $b; |
|
731
|
|
|
|
|
732
|
|
|
return $b; |
|
733
|
|
|
} |
|
734
|
|
|
|
|
735
|
|
|
/** |
|
736
|
|
|
* Push special (named) block onto parse tree |
|
737
|
|
|
* |
|
738
|
|
|
* @param string $type |
|
739
|
|
|
* @param integer $pos |
|
740
|
|
|
* |
|
741
|
|
|
* @return \Leafo\ScssPhp\Block |
|
742
|
|
|
*/ |
|
743
|
|
|
protected function pushSpecialBlock($type, $pos) |
|
744
|
|
|
{ |
|
745
|
|
|
$block = $this->pushBlock(null, $pos); |
|
746
|
|
|
$block->type = $type; |
|
747
|
|
|
|
|
748
|
|
|
return $block; |
|
749
|
|
|
} |
|
750
|
|
|
|
|
751
|
|
|
/** |
|
752
|
|
|
* Pop scope and return last block |
|
753
|
|
|
* |
|
754
|
|
|
* @return \Leafo\ScssPhp\Block |
|
755
|
|
|
* |
|
756
|
|
|
* @throws \Exception |
|
757
|
|
|
*/ |
|
758
|
|
|
protected function popBlock() |
|
759
|
|
|
{ |
|
760
|
|
|
$block = $this->env; |
|
761
|
|
|
|
|
762
|
|
|
if (empty($block->parent)) { |
|
763
|
|
|
$this->throwParseError('unexpected }'); |
|
764
|
|
|
} |
|
765
|
|
|
|
|
766
|
|
|
$this->env = $block->parent; |
|
767
|
|
|
unset($block->parent); |
|
768
|
|
|
|
|
769
|
|
|
$comments = $block->comments; |
|
770
|
|
|
if (count($comments)) { |
|
771
|
|
|
$this->env->comments = $comments; |
|
772
|
|
|
unset($block->comments); |
|
773
|
|
|
} |
|
774
|
|
|
|
|
775
|
|
|
return $block; |
|
776
|
|
|
} |
|
777
|
|
|
|
|
778
|
|
|
/** |
|
779
|
|
|
* Peek input stream |
|
780
|
|
|
* |
|
781
|
|
|
* @param string $regex |
|
782
|
|
|
* @param array $out |
|
783
|
|
|
* @param integer $from |
|
784
|
|
|
* |
|
785
|
|
|
* @return integer |
|
786
|
|
|
*/ |
|
787
|
|
|
protected function peek($regex, &$out, $from = null) |
|
788
|
|
|
{ |
|
789
|
|
|
if (! isset($from)) { |
|
790
|
|
|
$from = $this->count; |
|
791
|
|
|
} |
|
792
|
|
|
|
|
793
|
|
|
$r = '/' . $regex . '/' . $this->patternModifiers; |
|
794
|
|
|
$result = preg_match($r, $this->buffer, $out, null, $from); |
|
795
|
|
|
|
|
796
|
|
|
return $result; |
|
797
|
|
|
} |
|
798
|
|
|
|
|
799
|
|
|
/** |
|
800
|
|
|
* Seek to position in input stream (or return current position in input stream) |
|
801
|
|
|
* |
|
802
|
|
|
* @param integer $where |
|
803
|
|
|
* |
|
804
|
|
|
* @return integer |
|
805
|
|
|
*/ |
|
806
|
|
|
protected function seek($where = null) |
|
807
|
|
|
{ |
|
808
|
|
|
if ($where === null) { |
|
809
|
|
|
return $this->count; |
|
810
|
|
|
} |
|
811
|
|
|
|
|
812
|
|
|
$this->count = $where; |
|
813
|
|
|
|
|
814
|
|
|
return true; |
|
815
|
|
|
} |
|
816
|
|
|
|
|
817
|
|
|
/** |
|
818
|
|
|
* Match string looking for either ending delim, escape, or string interpolation |
|
819
|
|
|
* |
|
820
|
|
|
* {@internal This is a workaround for preg_match's 250K string match limit. }} |
|
821
|
|
|
* |
|
822
|
|
|
* @param array $m Matches (passed by reference) |
|
823
|
|
|
* @param string $delim Delimeter |
|
824
|
|
|
* |
|
825
|
|
|
* @return boolean True if match; false otherwise |
|
826
|
|
|
*/ |
|
827
|
|
|
protected function matchString(&$m, $delim) |
|
828
|
|
|
{ |
|
829
|
|
|
$token = null; |
|
830
|
|
|
|
|
831
|
|
|
$end = strlen($this->buffer); |
|
832
|
|
|
|
|
833
|
|
|
// look for either ending delim, escape, or string interpolation |
|
834
|
|
|
foreach (['#{', '\\', $delim] as $lookahead) { |
|
835
|
|
|
$pos = strpos($this->buffer, $lookahead, $this->count); |
|
836
|
|
|
|
|
837
|
|
|
if ($pos !== false && $pos < $end) { |
|
838
|
|
|
$end = $pos; |
|
839
|
|
|
$token = $lookahead; |
|
840
|
|
|
} |
|
841
|
|
|
} |
|
842
|
|
|
|
|
843
|
|
|
if (! isset($token)) { |
|
844
|
|
|
return false; |
|
845
|
|
|
} |
|
846
|
|
|
|
|
847
|
|
|
$match = substr($this->buffer, $this->count, $end - $this->count); |
|
848
|
|
|
$m = [ |
|
849
|
|
|
$match . $token, |
|
850
|
|
|
$match, |
|
851
|
|
|
$token |
|
852
|
|
|
]; |
|
853
|
|
|
$this->count = $end + strlen($token); |
|
854
|
|
|
|
|
855
|
|
|
return true; |
|
856
|
|
|
} |
|
857
|
|
|
|
|
858
|
|
|
/** |
|
859
|
|
|
* Try to match something on head of buffer |
|
860
|
|
|
* |
|
861
|
|
|
* @param string $regex |
|
862
|
|
|
* @param array $out |
|
863
|
|
|
* @param boolean $eatWhitespace |
|
864
|
|
|
* |
|
865
|
|
|
* @return boolean |
|
866
|
|
|
*/ |
|
867
|
|
|
protected function match($regex, &$out, $eatWhitespace = null) |
|
868
|
|
|
{ |
|
869
|
|
|
if (! isset($eatWhitespace)) { |
|
870
|
|
|
$eatWhitespace = $this->eatWhiteDefault; |
|
871
|
|
|
} |
|
872
|
|
|
|
|
873
|
|
|
$r = '/' . $regex . '/' . $this->patternModifiers; |
|
874
|
|
|
|
|
875
|
|
|
if (preg_match($r, $this->buffer, $out, null, $this->count)) { |
|
876
|
|
|
$this->count += strlen($out[0]); |
|
877
|
|
|
|
|
878
|
|
|
if ($eatWhitespace) { |
|
879
|
|
|
$this->whitespace(); |
|
880
|
|
|
} |
|
881
|
|
|
|
|
882
|
|
|
return true; |
|
883
|
|
|
} |
|
884
|
|
|
|
|
885
|
|
|
return false; |
|
886
|
|
|
} |
|
887
|
|
|
|
|
888
|
|
|
/** |
|
889
|
|
|
* Match literal string |
|
890
|
|
|
* |
|
891
|
|
|
* @param string $what |
|
892
|
|
|
* @param boolean $eatWhitespace |
|
893
|
|
|
* |
|
894
|
|
|
* @return boolean |
|
895
|
|
|
*/ |
|
896
|
|
|
protected function literal($what, $eatWhitespace = null) |
|
897
|
|
|
{ |
|
898
|
|
|
if (! isset($eatWhitespace)) { |
|
899
|
|
|
$eatWhitespace = $this->eatWhiteDefault; |
|
900
|
|
|
} |
|
901
|
|
|
|
|
902
|
|
|
$len = strlen($what); |
|
903
|
|
|
|
|
904
|
|
|
if (strcasecmp(substr($this->buffer, $this->count, $len), $what) === 0) { |
|
905
|
|
|
$this->count += $len; |
|
906
|
|
|
|
|
907
|
|
|
if ($eatWhitespace) { |
|
908
|
|
|
$this->whitespace(); |
|
909
|
|
|
} |
|
910
|
|
|
|
|
911
|
|
|
return true; |
|
912
|
|
|
} |
|
913
|
|
|
|
|
914
|
|
|
return false; |
|
915
|
|
|
} |
|
916
|
|
|
|
|
917
|
|
|
/** |
|
918
|
|
|
* Match some whitespace |
|
919
|
|
|
* |
|
920
|
|
|
* @return boolean |
|
921
|
|
|
*/ |
|
922
|
|
|
protected function whitespace() |
|
923
|
|
|
{ |
|
924
|
|
|
$gotWhite = false; |
|
925
|
|
|
|
|
926
|
|
|
while (preg_match(static::$whitePattern, $this->buffer, $m, null, $this->count)) { |
|
927
|
|
|
if (isset($m[1]) && empty($this->commentsSeen[$this->count])) { |
|
928
|
|
|
$this->appendComment([Type::T_COMMENT, $m[1]]); |
|
929
|
|
|
|
|
930
|
|
|
$this->commentsSeen[$this->count] = true; |
|
931
|
|
|
} |
|
932
|
|
|
|
|
933
|
|
|
$this->count += strlen($m[0]); |
|
934
|
|
|
$gotWhite = true; |
|
935
|
|
|
} |
|
936
|
|
|
|
|
937
|
|
|
return $gotWhite; |
|
938
|
|
|
} |
|
939
|
|
|
|
|
940
|
|
|
/** |
|
941
|
|
|
* Append comment to current block |
|
942
|
|
|
* |
|
943
|
|
|
* @param array $comment |
|
944
|
|
|
*/ |
|
945
|
|
|
protected function appendComment($comment) |
|
946
|
|
|
{ |
|
947
|
|
|
$comment[1] = substr(preg_replace(['/^\s+/m', '/^(.)/m'], ['', ' \1'], $comment[1]), 1); |
|
948
|
|
|
|
|
949
|
|
|
$this->env->comments[] = $comment; |
|
950
|
|
|
} |
|
951
|
|
|
|
|
952
|
|
|
/** |
|
953
|
|
|
* Append statement to current block |
|
954
|
|
|
* |
|
955
|
|
|
* @param array $statement |
|
956
|
|
|
* @param integer $pos |
|
957
|
|
|
*/ |
|
958
|
|
|
protected function append($statement, $pos = null) |
|
959
|
|
|
{ |
|
960
|
|
|
if ($pos !== null) { |
|
961
|
|
|
list($line, $column) = $this->getSourcePosition($pos); |
|
962
|
|
|
|
|
963
|
|
|
$statement[static::SOURCE_LINE] = $line; |
|
964
|
|
|
$statement[static::SOURCE_COLUMN] = $column; |
|
965
|
|
|
$statement[static::SOURCE_INDEX] = $this->sourceIndex; |
|
966
|
|
|
} |
|
967
|
|
|
|
|
968
|
|
|
$this->env->children[] = $statement; |
|
969
|
|
|
|
|
970
|
|
|
$comments = $this->env->comments; |
|
971
|
|
|
|
|
972
|
|
|
if (count($comments)) { |
|
973
|
|
|
$this->env->children = array_merge($this->env->children, $comments); |
|
974
|
|
|
$this->env->comments = []; |
|
975
|
|
|
} |
|
976
|
|
|
} |
|
977
|
|
|
|
|
978
|
|
|
/** |
|
979
|
|
|
* Returns last child was appended |
|
980
|
|
|
* |
|
981
|
|
|
* @return array|null |
|
982
|
|
|
*/ |
|
983
|
|
|
protected function last() |
|
984
|
|
|
{ |
|
985
|
|
|
$i = count($this->env->children) - 1; |
|
986
|
|
|
|
|
987
|
|
|
if (isset($this->env->children[$i])) { |
|
988
|
|
|
return $this->env->children[$i]; |
|
989
|
|
|
} |
|
990
|
|
|
} |
|
991
|
|
|
|
|
992
|
|
|
/** |
|
993
|
|
|
* Parse media query list |
|
994
|
|
|
* |
|
995
|
|
|
* @param array $out |
|
996
|
|
|
* |
|
997
|
|
|
* @return boolean |
|
998
|
|
|
*/ |
|
999
|
|
|
protected function mediaQueryList(&$out) |
|
1000
|
|
|
{ |
|
1001
|
|
|
return $this->genericList($out, 'mediaQuery', ',', false); |
|
1002
|
|
|
} |
|
1003
|
|
|
|
|
1004
|
|
|
/** |
|
1005
|
|
|
* Parse media query |
|
1006
|
|
|
* |
|
1007
|
|
|
* @param array $out |
|
1008
|
|
|
* |
|
1009
|
|
|
* @return boolean |
|
1010
|
|
|
*/ |
|
1011
|
|
|
protected function mediaQuery(&$out) |
|
1012
|
|
|
{ |
|
1013
|
|
|
$expressions = null; |
|
1014
|
|
|
$parts = []; |
|
1015
|
|
|
|
|
1016
|
|
|
if (($this->literal('only') && ($only = true) || $this->literal('not') && ($not = true) || true) && |
|
1017
|
|
|
$this->mixedKeyword($mediaType) |
|
1018
|
|
|
) { |
|
1019
|
|
|
$prop = [Type::T_MEDIA_TYPE]; |
|
1020
|
|
|
|
|
1021
|
|
|
if (isset($only)) { |
|
1022
|
|
|
$prop[] = [Type::T_KEYWORD, 'only']; |
|
1023
|
|
|
} |
|
1024
|
|
|
|
|
1025
|
|
|
if (isset($not)) { |
|
1026
|
|
|
$prop[] = [Type::T_KEYWORD, 'not']; |
|
1027
|
|
|
} |
|
1028
|
|
|
|
|
1029
|
|
|
$media = [Type::T_LIST, '', []]; |
|
1030
|
|
|
|
|
1031
|
|
|
foreach ((array) $mediaType as $type) { |
|
1032
|
|
|
if (is_array($type)) { |
|
1033
|
|
|
$media[2][] = $type; |
|
1034
|
|
|
} else { |
|
1035
|
|
|
$media[2][] = [Type::T_KEYWORD, $type]; |
|
1036
|
|
|
} |
|
1037
|
|
|
} |
|
1038
|
|
|
|
|
1039
|
|
|
$prop[] = $media; |
|
1040
|
|
|
$parts[] = $prop; |
|
1041
|
|
|
} |
|
1042
|
|
|
|
|
1043
|
|
|
if (empty($parts) || $this->literal('and')) { |
|
1044
|
|
|
$this->genericList($expressions, 'mediaExpression', 'and', false); |
|
1045
|
|
|
|
|
1046
|
|
|
if (is_array($expressions)) { |
|
1047
|
|
|
$parts = array_merge($parts, $expressions[2]); |
|
1048
|
|
|
} |
|
1049
|
|
|
} |
|
1050
|
|
|
|
|
1051
|
|
|
$out = $parts; |
|
1052
|
|
|
|
|
1053
|
|
|
return true; |
|
1054
|
|
|
} |
|
1055
|
|
|
|
|
1056
|
|
|
/** |
|
1057
|
|
|
* Parse media expression |
|
1058
|
|
|
* |
|
1059
|
|
|
* @param array $out |
|
1060
|
|
|
* |
|
1061
|
|
|
* @return boolean |
|
1062
|
|
|
*/ |
|
1063
|
|
|
protected function mediaExpression(&$out) |
|
1064
|
|
|
{ |
|
1065
|
|
|
$s = $this->seek(); |
|
1066
|
|
|
$value = null; |
|
1067
|
|
|
|
|
|
|
|
|
|
1068
|
|
|
if ($this->literal('(') && |
|
1069
|
|
|
$this->expression($feature) && |
|
1070
|
|
|
($this->literal(':') && $this->expression($value) || true) && |
|
1071
|
|
|
$this->literal(')') |
|
1072
|
|
|
) { |
|
1073
|
|
|
$out = [Type::T_MEDIA_EXPRESSION, $feature]; |
|
1074
|
|
|
|
|
1075
|
|
|
if ($value) { |
|
1076
|
|
|
$out[] = $value; |
|
1077
|
|
|
} |
|
1078
|
|
|
|
|
1079
|
|
|
return true; |
|
1080
|
|
|
} |
|
1081
|
|
|
|
|
1082
|
|
|
$this->seek($s); |
|
1083
|
|
|
|
|
1084
|
|
|
return false; |
|
1085
|
|
|
} |
|
1086
|
|
|
|
|
1087
|
|
|
/** |
|
1088
|
|
|
* Parse argument values |
|
1089
|
|
|
* |
|
1090
|
|
|
* @param array $out |
|
1091
|
|
|
* |
|
1092
|
|
|
* @return boolean |
|
1093
|
|
|
*/ |
|
1094
|
|
|
protected function argValues(&$out) |
|
1095
|
|
|
{ |
|
1096
|
|
|
if ($this->genericList($list, 'argValue', ',', false)) { |
|
1097
|
|
|
$out = $list[2]; |
|
1098
|
|
|
|
|
1099
|
|
|
return true; |
|
1100
|
|
|
} |
|
1101
|
|
|
|
|
1102
|
|
|
return false; |
|
1103
|
|
|
} |
|
1104
|
|
|
|
|
1105
|
|
|
/** |
|
1106
|
|
|
* Parse argument value |
|
1107
|
|
|
* |
|
1108
|
|
|
* @param array $out |
|
1109
|
|
|
* |
|
1110
|
|
|
* @return boolean |
|
1111
|
|
|
*/ |
|
1112
|
|
|
protected function argValue(&$out) |
|
1113
|
|
|
{ |
|
1114
|
|
|
$s = $this->seek(); |
|
1115
|
|
|
|
|
1116
|
|
|
$keyword = null; |
|
1117
|
|
|
|
|
1118
|
|
|
if (! $this->variable($keyword) || ! $this->literal(':')) { |
|
1119
|
|
|
$this->seek($s); |
|
1120
|
|
|
$keyword = null; |
|
1121
|
|
|
} |
|
1122
|
|
|
|
|
1123
|
|
|
if ($this->genericList($value, 'expression')) { |
|
1124
|
|
|
$out = [$keyword, $value, false]; |
|
1125
|
|
|
$s = $this->seek(); |
|
|
|
|
|
|
1126
|
|
|
|
|
1127
|
|
|
if ($this->literal('...')) { |
|
1128
|
|
|
$out[2] = true; |
|
1129
|
|
|
} else { |
|
1130
|
|
|
$this->seek($s); |
|
1131
|
|
|
} |
|
1132
|
|
|
|
|
1133
|
|
|
return true; |
|
1134
|
|
|
} |
|
1135
|
|
|
|
|
1136
|
|
|
return false; |
|
1137
|
|
|
} |
|
1138
|
|
|
|
|
1139
|
|
|
/** |
|
1140
|
|
|
* Parse comma separated value list |
|
1141
|
|
|
* |
|
1142
|
|
|
* @param string $out |
|
1143
|
|
|
* |
|
1144
|
|
|
* @return boolean |
|
1145
|
|
|
*/ |
|
1146
|
|
|
protected function valueList(&$out) |
|
1147
|
|
|
{ |
|
1148
|
|
|
return $this->genericList($out, 'spaceList', ','); |
|
1149
|
|
|
} |
|
1150
|
|
|
|
|
1151
|
|
|
/** |
|
1152
|
|
|
* Parse space separated value list |
|
1153
|
|
|
* |
|
1154
|
|
|
* @param array $out |
|
1155
|
|
|
* |
|
1156
|
|
|
* @return boolean |
|
1157
|
|
|
*/ |
|
1158
|
|
|
protected function spaceList(&$out) |
|
1159
|
|
|
{ |
|
1160
|
|
|
return $this->genericList($out, 'expression'); |
|
1161
|
|
|
} |
|
1162
|
|
|
|
|
1163
|
|
|
/** |
|
1164
|
|
|
* Parse generic list |
|
1165
|
|
|
* |
|
1166
|
|
|
* @param array $out |
|
1167
|
|
|
* @param callable $parseItem |
|
1168
|
|
|
* @param string $delim |
|
1169
|
|
|
* @param boolean $flatten |
|
1170
|
|
|
* |
|
1171
|
|
|
* @return boolean |
|
1172
|
|
|
*/ |
|
1173
|
|
|
protected function genericList(&$out, $parseItem, $delim = '', $flatten = true) |
|
1174
|
|
|
{ |
|
1175
|
|
|
$s = $this->seek(); |
|
1176
|
|
|
$items = []; |
|
1177
|
|
|
|
|
1178
|
|
|
while ($this->$parseItem($value)) { |
|
1179
|
|
|
$items[] = $value; |
|
1180
|
|
|
|
|
1181
|
|
|
if ($delim) { |
|
1182
|
|
|
if (! $this->literal($delim)) { |
|
1183
|
|
|
break; |
|
1184
|
|
|
} |
|
1185
|
|
|
} |
|
1186
|
|
|
} |
|
1187
|
|
|
|
|
1188
|
|
|
if (count($items) === 0) { |
|
1189
|
|
|
$this->seek($s); |
|
1190
|
|
|
|
|
1191
|
|
|
return false; |
|
1192
|
|
|
} |
|
1193
|
|
|
|
|
1194
|
|
|
if ($flatten && count($items) === 1) { |
|
1195
|
|
|
$out = $items[0]; |
|
1196
|
|
|
} else { |
|
1197
|
|
|
$out = [Type::T_LIST, $delim, $items]; |
|
1198
|
|
|
} |
|
1199
|
|
|
|
|
1200
|
|
|
return true; |
|
1201
|
|
|
} |
|
1202
|
|
|
|
|
1203
|
|
|
/** |
|
1204
|
|
|
* Parse expression |
|
1205
|
|
|
* |
|
1206
|
|
|
* @param array $out |
|
1207
|
|
|
* |
|
1208
|
|
|
* @return boolean |
|
1209
|
|
|
*/ |
|
1210
|
|
|
protected function expression(&$out) |
|
1211
|
|
|
{ |
|
1212
|
|
|
$s = $this->seek(); |
|
1213
|
|
|
|
|
1214
|
|
|
if ($this->literal('(')) { |
|
1215
|
|
|
if ($this->literal(')')) { |
|
1216
|
|
|
$out = [Type::T_LIST, '', []]; |
|
1217
|
|
|
|
|
1218
|
|
|
return true; |
|
1219
|
|
|
} |
|
1220
|
|
|
|
|
1221
|
|
|
if ($this->valueList($out) && $this->literal(')') && $out[0] === Type::T_LIST) { |
|
1222
|
|
|
return true; |
|
1223
|
|
|
} |
|
1224
|
|
|
|
|
1225
|
|
|
$this->seek($s); |
|
1226
|
|
|
|
|
1227
|
|
|
if ($this->map($out)) { |
|
1228
|
|
|
return true; |
|
1229
|
|
|
} |
|
1230
|
|
|
|
|
1231
|
|
|
$this->seek($s); |
|
1232
|
|
|
} |
|
1233
|
|
|
|
|
1234
|
|
|
if ($this->value($lhs)) { |
|
1235
|
|
|
$out = $this->expHelper($lhs, 0); |
|
1236
|
|
|
|
|
1237
|
|
|
return true; |
|
1238
|
|
|
} |
|
1239
|
|
|
|
|
1240
|
|
|
return false; |
|
1241
|
|
|
} |
|
1242
|
|
|
|
|
1243
|
|
|
/** |
|
1244
|
|
|
* Parse left-hand side of subexpression |
|
1245
|
|
|
* |
|
1246
|
|
|
* @param array $lhs |
|
1247
|
|
|
* @param integer $minP |
|
1248
|
|
|
* |
|
1249
|
|
|
* @return array |
|
1250
|
|
|
*/ |
|
1251
|
|
|
protected function expHelper($lhs, $minP) |
|
1252
|
|
|
{ |
|
1253
|
|
|
$operators = static::$operatorPattern; |
|
1254
|
|
|
|
|
1255
|
|
|
$ss = $this->seek(); |
|
1256
|
|
|
$whiteBefore = isset($this->buffer[$this->count - 1]) && |
|
1257
|
|
|
ctype_space($this->buffer[$this->count - 1]); |
|
1258
|
|
|
|
|
1259
|
|
|
while ($this->match($operators, $m, false) && static::$precedence[$m[1]] >= $minP) { |
|
1260
|
|
|
$whiteAfter = isset($this->buffer[$this->count]) && |
|
1261
|
|
|
ctype_space($this->buffer[$this->count]); |
|
1262
|
|
|
$varAfter = isset($this->buffer[$this->count]) && |
|
1263
|
|
|
$this->buffer[$this->count] === '$'; |
|
1264
|
|
|
|
|
1265
|
|
|
$this->whitespace(); |
|
1266
|
|
|
|
|
1267
|
|
|
$op = $m[1]; |
|
1268
|
|
|
|
|
1269
|
|
|
// don't turn negative numbers into expressions |
|
1270
|
|
|
if ($op === '-' && $whiteBefore && ! $whiteAfter && ! $varAfter) { |
|
1271
|
|
|
break; |
|
1272
|
|
|
} |
|
1273
|
|
|
|
|
1274
|
|
|
if (! $this->value($rhs)) { |
|
1275
|
|
|
break; |
|
1276
|
|
|
} |
|
1277
|
|
|
|
|
1278
|
|
|
// peek and see if rhs belongs to next operator |
|
1279
|
|
|
if ($this->peek($operators, $next) && static::$precedence[$next[1]] > static::$precedence[$op]) { |
|
1280
|
|
|
$rhs = $this->expHelper($rhs, static::$precedence[$next[1]]); |
|
1281
|
|
|
} |
|
1282
|
|
|
|
|
1283
|
|
|
$lhs = [Type::T_EXPRESSION, $op, $lhs, $rhs, $this->inParens, $whiteBefore, $whiteAfter]; |
|
1284
|
|
|
$ss = $this->seek(); |
|
1285
|
|
|
$whiteBefore = isset($this->buffer[$this->count - 1]) && |
|
1286
|
|
|
ctype_space($this->buffer[$this->count - 1]); |
|
1287
|
|
|
} |
|
1288
|
|
|
|
|
1289
|
|
|
$this->seek($ss); |
|
1290
|
|
|
|
|
1291
|
|
|
return $lhs; |
|
1292
|
|
|
} |
|
1293
|
|
|
|
|
1294
|
|
|
/** |
|
1295
|
|
|
* Parse value |
|
1296
|
|
|
* |
|
1297
|
|
|
* @param array $out |
|
1298
|
|
|
* |
|
1299
|
|
|
* @return boolean |
|
1300
|
|
|
*/ |
|
1301
|
|
|
protected function value(&$out) |
|
1302
|
|
|
{ |
|
1303
|
|
|
$s = $this->seek(); |
|
1304
|
|
|
|
|
1305
|
|
|
if ($this->literal('not', false) && $this->whitespace() && $this->value($inner)) { |
|
1306
|
|
|
$out = [Type::T_UNARY, 'not', $inner, $this->inParens]; |
|
1307
|
|
|
|
|
1308
|
|
|
return true; |
|
1309
|
|
|
} |
|
1310
|
|
|
|
|
1311
|
|
|
$this->seek($s); |
|
1312
|
|
|
|
|
1313
|
|
|
if ($this->literal('not', false) && $this->parenValue($inner)) { |
|
1314
|
|
|
$out = [Type::T_UNARY, 'not', $inner, $this->inParens]; |
|
1315
|
|
|
|
|
1316
|
|
|
return true; |
|
1317
|
|
|
} |
|
1318
|
|
|
|
|
1319
|
|
|
$this->seek($s); |
|
1320
|
|
|
|
|
1321
|
|
|
if ($this->literal('+') && $this->value($inner)) { |
|
1322
|
|
|
$out = [Type::T_UNARY, '+', $inner, $this->inParens]; |
|
1323
|
|
|
|
|
1324
|
|
|
return true; |
|
1325
|
|
|
} |
|
1326
|
|
|
|
|
1327
|
|
|
$this->seek($s); |
|
1328
|
|
|
|
|
1329
|
|
|
// negation |
|
1330
|
|
|
if ($this->literal('-', false) && |
|
1331
|
|
|
($this->variable($inner) || |
|
1332
|
|
|
$this->unit($inner) || |
|
1333
|
|
|
$this->parenValue($inner)) |
|
1334
|
|
|
) { |
|
1335
|
|
|
$out = [Type::T_UNARY, '-', $inner, $this->inParens]; |
|
1336
|
|
|
|
|
1337
|
|
|
return true; |
|
1338
|
|
|
} |
|
1339
|
|
|
|
|
1340
|
|
|
$this->seek($s); |
|
1341
|
|
|
|
|
1342
|
|
|
if ($this->parenValue($out) || |
|
1343
|
|
|
$this->interpolation($out) || |
|
1344
|
|
|
$this->variable($out) || |
|
1345
|
|
|
$this->color($out) || |
|
1346
|
|
|
$this->unit($out) || |
|
1347
|
|
|
$this->string($out) || |
|
1348
|
|
|
$this->func($out) || |
|
1349
|
|
|
$this->progid($out) |
|
1350
|
|
|
) { |
|
1351
|
|
|
return true; |
|
1352
|
|
|
} |
|
1353
|
|
|
|
|
1354
|
|
|
if ($this->keyword($keyword)) { |
|
1355
|
|
|
if ($keyword === 'null') { |
|
1356
|
|
|
$out = [Type::T_NULL]; |
|
1357
|
|
|
} else { |
|
1358
|
|
|
$out = [Type::T_KEYWORD, $keyword]; |
|
1359
|
|
|
} |
|
1360
|
|
|
|
|
1361
|
|
|
return true; |
|
1362
|
|
|
} |
|
1363
|
|
|
|
|
1364
|
|
|
return false; |
|
1365
|
|
|
} |
|
1366
|
|
|
|
|
1367
|
|
|
/** |
|
1368
|
|
|
* Parse parenthesized value |
|
1369
|
|
|
* |
|
1370
|
|
|
* @param array $out |
|
1371
|
|
|
* |
|
1372
|
|
|
* @return boolean |
|
1373
|
|
|
*/ |
|
1374
|
|
|
protected function parenValue(&$out) |
|
1375
|
|
|
{ |
|
1376
|
|
|
$s = $this->seek(); |
|
1377
|
|
|
|
|
1378
|
|
|
$inParens = $this->inParens; |
|
1379
|
|
|
|
|
1380
|
|
|
if ($this->literal('(')) { |
|
1381
|
|
|
if ($this->literal(')')) { |
|
1382
|
|
|
$out = [Type::T_LIST, '', []]; |
|
1383
|
|
|
|
|
1384
|
|
|
return true; |
|
1385
|
|
|
} |
|
1386
|
|
|
|
|
1387
|
|
|
$this->inParens = true; |
|
1388
|
|
|
|
|
1389
|
|
|
if ($this->expression($exp) && $this->literal(')')) { |
|
1390
|
|
|
$out = $exp; |
|
1391
|
|
|
$this->inParens = $inParens; |
|
1392
|
|
|
|
|
1393
|
|
|
return true; |
|
1394
|
|
|
} |
|
1395
|
|
|
} |
|
1396
|
|
|
|
|
1397
|
|
|
$this->inParens = $inParens; |
|
1398
|
|
|
$this->seek($s); |
|
1399
|
|
|
|
|
1400
|
|
|
return false; |
|
1401
|
|
|
} |
|
1402
|
|
|
|
|
1403
|
|
|
/** |
|
1404
|
|
|
* Parse "progid:" |
|
1405
|
|
|
* |
|
1406
|
|
|
* @param array $out |
|
1407
|
|
|
* |
|
1408
|
|
|
* @return boolean |
|
1409
|
|
|
*/ |
|
1410
|
|
|
protected function progid(&$out) |
|
1411
|
|
|
{ |
|
1412
|
|
|
$s = $this->seek(); |
|
1413
|
|
|
|
|
1414
|
|
|
if ($this->literal('progid:', false) && |
|
1415
|
|
|
$this->openString('(', $fn) && |
|
1416
|
|
|
$this->literal('(') |
|
1417
|
|
|
) { |
|
1418
|
|
|
$this->openString(')', $args, '('); |
|
1419
|
|
|
|
|
1420
|
|
|
if ($this->literal(')')) { |
|
1421
|
|
|
$out = [Type::T_STRING, '', [ |
|
1422
|
|
|
'progid:', $fn, '(', $args, ')' |
|
1423
|
|
|
]]; |
|
1424
|
|
|
|
|
1425
|
|
|
return true; |
|
1426
|
|
|
} |
|
1427
|
|
|
} |
|
1428
|
|
|
|
|
1429
|
|
|
$this->seek($s); |
|
1430
|
|
|
|
|
1431
|
|
|
return false; |
|
1432
|
|
|
} |
|
1433
|
|
|
|
|
1434
|
|
|
/** |
|
1435
|
|
|
* Parse function call |
|
1436
|
|
|
* |
|
1437
|
|
|
* @param array $out |
|
1438
|
|
|
* |
|
1439
|
|
|
* @return boolean |
|
1440
|
|
|
*/ |
|
1441
|
|
|
protected function func(&$func) |
|
1442
|
|
|
{ |
|
1443
|
|
|
$s = $this->seek(); |
|
1444
|
|
|
|
|
1445
|
|
|
if ($this->keyword($name, false) && |
|
1446
|
|
|
$this->literal('(') |
|
1447
|
|
|
) { |
|
1448
|
|
|
if ($name === 'alpha' && $this->argumentList($args)) { |
|
1449
|
|
|
$func = [Type::T_FUNCTION, $name, [Type::T_STRING, '', $args]]; |
|
1450
|
|
|
|
|
1451
|
|
|
return true; |
|
1452
|
|
|
} |
|
1453
|
|
|
|
|
1454
|
|
|
if ($name !== 'expression' && ! preg_match('/^(-[a-z]+-)?calc$/', $name)) { |
|
1455
|
|
|
$ss = $this->seek(); |
|
1456
|
|
|
|
|
1457
|
|
|
if ($this->argValues($args) && $this->literal(')')) { |
|
1458
|
|
|
$func = [Type::T_FUNCTION_CALL, $name, $args]; |
|
1459
|
|
|
|
|
1460
|
|
|
return true; |
|
1461
|
|
|
} |
|
1462
|
|
|
|
|
1463
|
|
|
$this->seek($ss); |
|
1464
|
|
|
} |
|
1465
|
|
|
|
|
1466
|
|
|
if (($this->openString(')', $str, '(') || true) && |
|
1467
|
|
|
$this->literal(')') |
|
1468
|
|
|
) { |
|
1469
|
|
|
$args = []; |
|
1470
|
|
|
|
|
1471
|
|
|
if (! empty($str)) { |
|
1472
|
|
|
$args[] = [null, [Type::T_STRING, '', [$str]]]; |
|
1473
|
|
|
} |
|
1474
|
|
|
|
|
1475
|
|
|
$func = [Type::T_FUNCTION_CALL, $name, $args]; |
|
1476
|
|
|
|
|
1477
|
|
|
return true; |
|
1478
|
|
|
} |
|
1479
|
|
|
} |
|
1480
|
|
|
|
|
1481
|
|
|
$this->seek($s); |
|
1482
|
|
|
|
|
1483
|
|
|
return false; |
|
1484
|
|
|
} |
|
1485
|
|
|
|
|
1486
|
|
|
/** |
|
1487
|
|
|
* Parse function call argument list |
|
1488
|
|
|
* |
|
1489
|
|
|
* @param array $out |
|
1490
|
|
|
* |
|
1491
|
|
|
* @return boolean |
|
1492
|
|
|
*/ |
|
1493
|
|
|
protected function argumentList(&$out) |
|
1494
|
|
|
{ |
|
1495
|
|
|
$s = $this->seek(); |
|
1496
|
|
|
$this->literal('('); |
|
1497
|
|
|
|
|
1498
|
|
|
$args = []; |
|
1499
|
|
|
|
|
1500
|
|
|
while ($this->keyword($var)) { |
|
1501
|
|
|
if ($this->literal('=') && $this->expression($exp)) { |
|
1502
|
|
|
$args[] = [Type::T_STRING, '', [$var . '=']]; |
|
1503
|
|
|
$arg = $exp; |
|
1504
|
|
|
} else { |
|
1505
|
|
|
break; |
|
1506
|
|
|
} |
|
1507
|
|
|
|
|
1508
|
|
|
$args[] = $arg; |
|
1509
|
|
|
|
|
1510
|
|
|
if (! $this->literal(',')) { |
|
1511
|
|
|
break; |
|
1512
|
|
|
} |
|
1513
|
|
|
|
|
1514
|
|
|
$args[] = [Type::T_STRING, '', [', ']]; |
|
1515
|
|
|
} |
|
1516
|
|
|
|
|
1517
|
|
|
if (! $this->literal(')') || ! count($args)) { |
|
1518
|
|
|
$this->seek($s); |
|
1519
|
|
|
|
|
1520
|
|
|
return false; |
|
1521
|
|
|
} |
|
1522
|
|
|
|
|
1523
|
|
|
$out = $args; |
|
1524
|
|
|
|
|
1525
|
|
|
return true; |
|
1526
|
|
|
} |
|
1527
|
|
|
|
|
1528
|
|
|
/** |
|
1529
|
|
|
* Parse mixin/function definition argument list |
|
1530
|
|
|
* |
|
1531
|
|
|
* @param array $out |
|
1532
|
|
|
* |
|
1533
|
|
|
* @return boolean |
|
1534
|
|
|
*/ |
|
1535
|
|
|
protected function argumentDef(&$out) |
|
1536
|
|
|
{ |
|
1537
|
|
|
$s = $this->seek(); |
|
1538
|
|
|
$this->literal('('); |
|
1539
|
|
|
|
|
1540
|
|
|
$args = []; |
|
1541
|
|
|
|
|
1542
|
|
|
while ($this->variable($var)) { |
|
1543
|
|
|
$arg = [$var[1], null, false]; |
|
1544
|
|
|
|
|
1545
|
|
|
$ss = $this->seek(); |
|
1546
|
|
|
|
|
1547
|
|
|
if ($this->literal(':') && $this->genericList($defaultVal, 'expression')) { |
|
1548
|
|
|
$arg[1] = $defaultVal; |
|
1549
|
|
|
} else { |
|
1550
|
|
|
$this->seek($ss); |
|
1551
|
|
|
} |
|
1552
|
|
|
|
|
1553
|
|
|
$ss = $this->seek(); |
|
1554
|
|
|
|
|
1555
|
|
|
if ($this->literal('...')) { |
|
1556
|
|
|
$sss = $this->seek(); |
|
1557
|
|
|
|
|
1558
|
|
|
if (! $this->literal(')')) { |
|
1559
|
|
|
$this->throwParseError('... has to be after the final argument'); |
|
1560
|
|
|
} |
|
1561
|
|
|
|
|
1562
|
|
|
$arg[2] = true; |
|
1563
|
|
|
$this->seek($sss); |
|
1564
|
|
|
} else { |
|
1565
|
|
|
$this->seek($ss); |
|
1566
|
|
|
} |
|
1567
|
|
|
|
|
1568
|
|
|
$args[] = $arg; |
|
1569
|
|
|
|
|
1570
|
|
|
if (! $this->literal(',')) { |
|
1571
|
|
|
break; |
|
1572
|
|
|
} |
|
1573
|
|
|
} |
|
1574
|
|
|
|
|
1575
|
|
|
if (! $this->literal(')')) { |
|
1576
|
|
|
$this->seek($s); |
|
1577
|
|
|
|
|
1578
|
|
|
return false; |
|
1579
|
|
|
} |
|
1580
|
|
|
|
|
1581
|
|
|
$out = $args; |
|
1582
|
|
|
|
|
1583
|
|
|
return true; |
|
1584
|
|
|
} |
|
1585
|
|
|
|
|
1586
|
|
|
/** |
|
1587
|
|
|
* Parse map |
|
1588
|
|
|
* |
|
1589
|
|
|
* @param array $out |
|
1590
|
|
|
* |
|
1591
|
|
|
* @return boolean |
|
1592
|
|
|
*/ |
|
1593
|
|
|
protected function map(&$out) |
|
1594
|
|
|
{ |
|
1595
|
|
|
$s = $this->seek(); |
|
1596
|
|
|
|
|
1597
|
|
|
if (! $this->literal('(')) { |
|
1598
|
|
|
return false; |
|
1599
|
|
|
} |
|
1600
|
|
|
|
|
1601
|
|
|
$keys = []; |
|
1602
|
|
|
$values = []; |
|
1603
|
|
|
|
|
1604
|
|
|
while ($this->genericList($key, 'expression') && $this->literal(':') && |
|
1605
|
|
|
$this->genericList($value, 'expression') |
|
1606
|
|
|
) { |
|
1607
|
|
|
$keys[] = $key; |
|
1608
|
|
|
$values[] = $value; |
|
1609
|
|
|
|
|
1610
|
|
|
if (! $this->literal(',')) { |
|
1611
|
|
|
break; |
|
1612
|
|
|
} |
|
1613
|
|
|
} |
|
1614
|
|
|
|
|
1615
|
|
|
if (! count($keys) || ! $this->literal(')')) { |
|
1616
|
|
|
$this->seek($s); |
|
1617
|
|
|
|
|
1618
|
|
|
return false; |
|
1619
|
|
|
} |
|
1620
|
|
|
|
|
1621
|
|
|
$out = [Type::T_MAP, $keys, $values]; |
|
1622
|
|
|
|
|
1623
|
|
|
return true; |
|
1624
|
|
|
} |
|
1625
|
|
|
|
|
1626
|
|
|
/** |
|
1627
|
|
|
* Parse color |
|
1628
|
|
|
* |
|
1629
|
|
|
* @param array $out |
|
1630
|
|
|
* |
|
1631
|
|
|
* @return boolean |
|
1632
|
|
|
*/ |
|
1633
|
|
|
protected function color(&$out) |
|
1634
|
|
|
{ |
|
1635
|
|
|
$color = [Type::T_COLOR]; |
|
1636
|
|
|
|
|
1637
|
|
|
if ($this->match('(#([0-9a-f]{6})|#([0-9a-f]{3}))', $m)) { |
|
1638
|
|
|
if (isset($m[3])) { |
|
1639
|
|
|
$num = hexdec($m[3]); |
|
1640
|
|
|
|
|
1641
|
|
|
foreach ([3, 2, 1] as $i) { |
|
1642
|
|
|
$t = $num & 0xf; |
|
1643
|
|
|
$color[$i] = $t << 4 | $t; |
|
1644
|
|
|
$num >>= 4; |
|
1645
|
|
|
} |
|
1646
|
|
|
} else { |
|
1647
|
|
|
$num = hexdec($m[2]); |
|
1648
|
|
|
|
|
1649
|
|
|
foreach ([3, 2, 1] as $i) { |
|
1650
|
|
|
$color[$i] = $num & 0xff; |
|
1651
|
|
|
$num >>= 8; |
|
1652
|
|
|
} |
|
1653
|
|
|
} |
|
1654
|
|
|
|
|
1655
|
|
|
$out = $color; |
|
1656
|
|
|
|
|
1657
|
|
|
return true; |
|
1658
|
|
|
} |
|
1659
|
|
|
|
|
1660
|
|
|
return false; |
|
1661
|
|
|
} |
|
1662
|
|
|
|
|
1663
|
|
|
/** |
|
1664
|
|
|
* Parse number with unit |
|
1665
|
|
|
* |
|
1666
|
|
|
* @param array $out |
|
1667
|
|
|
* |
|
1668
|
|
|
* @return boolean |
|
1669
|
|
|
*/ |
|
1670
|
|
|
protected function unit(&$unit) |
|
1671
|
|
|
{ |
|
1672
|
|
|
if ($this->match('([0-9]*(\.)?[0-9]+)([%a-zA-Z]+)?', $m)) { |
|
1673
|
|
|
$unit = new Node\Number($m[1], empty($m[3]) ? '' : $m[3]); |
|
1674
|
|
|
|
|
1675
|
|
|
return true; |
|
1676
|
|
|
} |
|
1677
|
|
|
|
|
1678
|
|
|
return false; |
|
1679
|
|
|
} |
|
1680
|
|
|
|
|
1681
|
|
|
/** |
|
1682
|
|
|
* Parse string |
|
1683
|
|
|
* |
|
1684
|
|
|
* @param array $out |
|
1685
|
|
|
* |
|
1686
|
|
|
* @return boolean |
|
1687
|
|
|
*/ |
|
1688
|
|
|
protected function string(&$out) |
|
1689
|
|
|
{ |
|
1690
|
|
|
$s = $this->seek(); |
|
1691
|
|
|
|
|
1692
|
|
|
if ($this->literal('"', false)) { |
|
1693
|
|
|
$delim = '"'; |
|
1694
|
|
|
} elseif ($this->literal("'", false)) { |
|
1695
|
|
|
$delim = "'"; |
|
1696
|
|
|
} else { |
|
1697
|
|
|
return false; |
|
1698
|
|
|
} |
|
1699
|
|
|
|
|
1700
|
|
|
$content = []; |
|
1701
|
|
|
$oldWhite = $this->eatWhiteDefault; |
|
1702
|
|
|
$this->eatWhiteDefault = false; |
|
1703
|
|
|
$hasInterpolation = false; |
|
1704
|
|
|
|
|
1705
|
|
|
while ($this->matchString($m, $delim)) { |
|
1706
|
|
|
if ($m[1] !== '') { |
|
1707
|
|
|
$content[] = $m[1]; |
|
1708
|
|
|
} |
|
1709
|
|
|
|
|
1710
|
|
|
if ($m[2] === '#{') { |
|
1711
|
|
|
$this->count -= strlen($m[2]); |
|
1712
|
|
|
|
|
1713
|
|
|
if ($this->interpolation($inter, false)) { |
|
1714
|
|
|
$content[] = $inter; |
|
1715
|
|
|
$hasInterpolation = true; |
|
1716
|
|
|
} else { |
|
1717
|
|
|
$this->count += strlen($m[2]); |
|
1718
|
|
|
$content[] = '#{'; // ignore it |
|
1719
|
|
|
} |
|
1720
|
|
|
} elseif ($m[2] === '\\') { |
|
1721
|
|
|
if ($this->literal('"', false)) { |
|
1722
|
|
|
$content[] = $m[2] . '"'; |
|
1723
|
|
|
} elseif ($this->literal("'", false)) { |
|
1724
|
|
|
$content[] = $m[2] . "'"; |
|
1725
|
|
|
} else { |
|
1726
|
|
|
$content[] = $m[2]; |
|
1727
|
|
|
} |
|
1728
|
|
|
} else { |
|
1729
|
|
|
$this->count -= strlen($delim); |
|
1730
|
|
|
break; // delim |
|
1731
|
|
|
} |
|
1732
|
|
|
} |
|
1733
|
|
|
|
|
1734
|
|
|
$this->eatWhiteDefault = $oldWhite; |
|
1735
|
|
|
|
|
1736
|
|
|
if ($this->literal($delim)) { |
|
1737
|
|
|
if ($hasInterpolation) { |
|
1738
|
|
|
$delim = '"'; |
|
1739
|
|
|
|
|
1740
|
|
|
foreach ($content as &$string) { |
|
1741
|
|
|
if ($string === "\\'") { |
|
1742
|
|
|
$string = "'"; |
|
1743
|
|
|
} elseif ($string === '\\"') { |
|
1744
|
|
|
$string = '"'; |
|
1745
|
|
|
} |
|
1746
|
|
|
} |
|
1747
|
|
|
} |
|
1748
|
|
|
|
|
1749
|
|
|
$out = [Type::T_STRING, $delim, $content]; |
|
1750
|
|
|
|
|
1751
|
|
|
return true; |
|
1752
|
|
|
} |
|
1753
|
|
|
|
|
1754
|
|
|
$this->seek($s); |
|
1755
|
|
|
|
|
1756
|
|
|
return false; |
|
1757
|
|
|
} |
|
1758
|
|
|
|
|
1759
|
|
|
/** |
|
1760
|
|
|
* Parse keyword or interpolation |
|
1761
|
|
|
* |
|
1762
|
|
|
* @param array $out |
|
1763
|
|
|
* |
|
1764
|
|
|
* @return boolean |
|
1765
|
|
|
*/ |
|
1766
|
|
|
protected function mixedKeyword(&$out) |
|
1767
|
|
|
{ |
|
1768
|
|
|
$parts = []; |
|
1769
|
|
|
|
|
1770
|
|
|
$oldWhite = $this->eatWhiteDefault; |
|
1771
|
|
|
$this->eatWhiteDefault = false; |
|
1772
|
|
|
|
|
1773
|
|
|
for (;;) { |
|
1774
|
|
|
if ($this->keyword($key)) { |
|
1775
|
|
|
$parts[] = $key; |
|
1776
|
|
|
continue; |
|
1777
|
|
|
} |
|
1778
|
|
|
|
|
1779
|
|
|
if ($this->interpolation($inter)) { |
|
1780
|
|
|
$parts[] = $inter; |
|
1781
|
|
|
continue; |
|
1782
|
|
|
} |
|
1783
|
|
|
|
|
1784
|
|
|
break; |
|
1785
|
|
|
} |
|
1786
|
|
|
|
|
1787
|
|
|
$this->eatWhiteDefault = $oldWhite; |
|
1788
|
|
|
|
|
1789
|
|
|
if (count($parts) === 0) { |
|
1790
|
|
|
return false; |
|
1791
|
|
|
} |
|
1792
|
|
|
|
|
1793
|
|
|
if ($this->eatWhiteDefault) { |
|
1794
|
|
|
$this->whitespace(); |
|
1795
|
|
|
} |
|
1796
|
|
|
|
|
1797
|
|
|
$out = $parts; |
|
1798
|
|
|
|
|
1799
|
|
|
return true; |
|
1800
|
|
|
} |
|
1801
|
|
|
|
|
1802
|
|
|
/** |
|
1803
|
|
|
* Parse an unbounded string stopped by $end |
|
1804
|
|
|
* |
|
1805
|
|
|
* @param string $end |
|
1806
|
|
|
* @param array $out |
|
1807
|
|
|
* @param string $nestingOpen |
|
1808
|
|
|
* |
|
1809
|
|
|
* @return boolean |
|
1810
|
|
|
*/ |
|
1811
|
|
|
protected function openString($end, &$out, $nestingOpen = null) |
|
1812
|
|
|
{ |
|
1813
|
|
|
$oldWhite = $this->eatWhiteDefault; |
|
1814
|
|
|
$this->eatWhiteDefault = false; |
|
1815
|
|
|
|
|
1816
|
|
|
$patt = '(.*?)([\'"]|#\{|' . $this->pregQuote($end) . '|' . static::$commentPattern . ')'; |
|
1817
|
|
|
|
|
1818
|
|
|
$nestingLevel = 0; |
|
1819
|
|
|
|
|
1820
|
|
|
$content = []; |
|
1821
|
|
|
|
|
1822
|
|
|
while ($this->match($patt, $m, false)) { |
|
1823
|
|
|
if (isset($m[1]) && $m[1] !== '') { |
|
1824
|
|
|
$content[] = $m[1]; |
|
1825
|
|
|
|
|
1826
|
|
|
if ($nestingOpen) { |
|
1827
|
|
|
$nestingLevel += substr_count($m[1], $nestingOpen); |
|
1828
|
|
|
} |
|
1829
|
|
|
} |
|
1830
|
|
|
|
|
1831
|
|
|
$tok = $m[2]; |
|
1832
|
|
|
|
|
1833
|
|
|
$this->count-= strlen($tok); |
|
1834
|
|
|
|
|
1835
|
|
|
if ($tok === $end && ! $nestingLevel--) { |
|
|
|
|
|
|
1836
|
|
|
break; |
|
1837
|
|
|
} |
|
1838
|
|
|
|
|
1839
|
|
|
if (($tok === "'" || $tok === '"') && $this->string($str)) { |
|
1840
|
|
|
$content[] = $str; |
|
1841
|
|
|
continue; |
|
1842
|
|
|
} |
|
1843
|
|
|
|
|
1844
|
|
|
if ($tok === '#{' && $this->interpolation($inter)) { |
|
1845
|
|
|
$content[] = $inter; |
|
1846
|
|
|
continue; |
|
1847
|
|
|
} |
|
1848
|
|
|
|
|
1849
|
|
|
$content[] = $tok; |
|
1850
|
|
|
$this->count+= strlen($tok); |
|
1851
|
|
|
} |
|
1852
|
|
|
|
|
1853
|
|
|
$this->eatWhiteDefault = $oldWhite; |
|
1854
|
|
|
|
|
1855
|
|
|
if (count($content) === 0) { |
|
1856
|
|
|
return false; |
|
1857
|
|
|
} |
|
1858
|
|
|
|
|
1859
|
|
|
// trim the end |
|
1860
|
|
|
if (is_string(end($content))) { |
|
1861
|
|
|
$content[count($content) - 1] = rtrim(end($content)); |
|
1862
|
|
|
} |
|
1863
|
|
|
|
|
1864
|
|
|
$out = [Type::T_STRING, '', $content]; |
|
1865
|
|
|
|
|
1866
|
|
|
return true; |
|
1867
|
|
|
} |
|
1868
|
|
|
|
|
1869
|
|
|
/** |
|
1870
|
|
|
* Parser interpolation |
|
1871
|
|
|
* |
|
1872
|
|
|
* @param array $out |
|
1873
|
|
|
* @param boolean $lookWhite save information about whitespace before and after |
|
1874
|
|
|
* |
|
1875
|
|
|
* @return boolean |
|
1876
|
|
|
*/ |
|
1877
|
|
|
protected function interpolation(&$out, $lookWhite = true) |
|
1878
|
|
|
{ |
|
1879
|
|
|
$oldWhite = $this->eatWhiteDefault; |
|
1880
|
|
|
$this->eatWhiteDefault = true; |
|
1881
|
|
|
|
|
1882
|
|
|
$s = $this->seek(); |
|
1883
|
|
|
|
|
1884
|
|
|
if ($this->literal('#{') && $this->valueList($value) && $this->literal('}', false)) { |
|
1885
|
|
|
if ($lookWhite) { |
|
1886
|
|
|
$left = preg_match('/\s/', $this->buffer[$s - 1]) ? ' ' : ''; |
|
1887
|
|
|
$right = preg_match('/\s/', $this->buffer[$this->count]) ? ' ': ''; |
|
1888
|
|
|
} else { |
|
1889
|
|
|
$left = $right = false; |
|
1890
|
|
|
} |
|
1891
|
|
|
|
|
1892
|
|
|
$out = [Type::T_INTERPOLATE, $value, $left, $right]; |
|
1893
|
|
|
$this->eatWhiteDefault = $oldWhite; |
|
1894
|
|
|
|
|
|
|
|
|
|
1895
|
|
|
if ($this->eatWhiteDefault) { |
|
1896
|
|
|
$this->whitespace(); |
|
1897
|
|
|
} |
|
1898
|
|
|
|
|
1899
|
|
|
return true; |
|
1900
|
|
|
} |
|
1901
|
|
|
|
|
1902
|
|
|
$this->seek($s); |
|
1903
|
|
|
$this->eatWhiteDefault = $oldWhite; |
|
1904
|
|
|
|
|
1905
|
|
|
return false; |
|
1906
|
|
|
} |
|
1907
|
|
|
|
|
1908
|
|
|
/** |
|
1909
|
|
|
* Parse property name (as an array of parts or a string) |
|
1910
|
|
|
* |
|
1911
|
|
|
* @param array $out |
|
1912
|
|
|
* |
|
1913
|
|
|
* @return boolean |
|
1914
|
|
|
*/ |
|
1915
|
|
|
protected function propertyName(&$out) |
|
1916
|
|
|
{ |
|
1917
|
|
|
$parts = []; |
|
1918
|
|
|
|
|
1919
|
|
|
$oldWhite = $this->eatWhiteDefault; |
|
1920
|
|
|
$this->eatWhiteDefault = false; |
|
1921
|
|
|
|
|
1922
|
|
|
for (;;) { |
|
1923
|
|
|
if ($this->interpolation($inter)) { |
|
1924
|
|
|
$parts[] = $inter; |
|
1925
|
|
|
continue; |
|
1926
|
|
|
} |
|
1927
|
|
|
|
|
1928
|
|
|
if ($this->keyword($text)) { |
|
1929
|
|
|
$parts[] = $text; |
|
1930
|
|
|
continue; |
|
1931
|
|
|
} |
|
1932
|
|
|
|
|
1933
|
|
|
if (count($parts) === 0 && $this->match('[:.#]', $m, false)) { |
|
1934
|
|
|
// css hacks |
|
1935
|
|
|
$parts[] = $m[0]; |
|
1936
|
|
|
continue; |
|
1937
|
|
|
} |
|
1938
|
|
|
|
|
1939
|
|
|
break; |
|
1940
|
|
|
} |
|
1941
|
|
|
|
|
1942
|
|
|
$this->eatWhiteDefault = $oldWhite; |
|
1943
|
|
|
|
|
1944
|
|
|
if (count($parts) === 0) { |
|
1945
|
|
|
return false; |
|
1946
|
|
|
} |
|
1947
|
|
|
|
|
1948
|
|
|
// match comment hack |
|
1949
|
|
|
if (preg_match( |
|
1950
|
|
|
static::$whitePattern, |
|
1951
|
|
|
$this->buffer, |
|
1952
|
|
|
$m, |
|
1953
|
|
|
null, |
|
1954
|
|
|
$this->count |
|
1955
|
|
|
)) { |
|
1956
|
|
|
if (! empty($m[0])) { |
|
1957
|
|
|
$parts[] = $m[0]; |
|
1958
|
|
|
$this->count += strlen($m[0]); |
|
1959
|
|
|
} |
|
1960
|
|
|
} |
|
1961
|
|
|
|
|
1962
|
|
|
$this->whitespace(); // get any extra whitespace |
|
1963
|
|
|
|
|
1964
|
|
|
$out = [Type::T_STRING, '', $parts]; |
|
1965
|
|
|
|
|
1966
|
|
|
return true; |
|
1967
|
|
|
} |
|
1968
|
|
|
|
|
1969
|
|
|
/** |
|
1970
|
|
|
* Parse comma separated selector list |
|
1971
|
|
|
* |
|
1972
|
|
|
* @param array $out |
|
1973
|
|
|
* |
|
1974
|
|
|
* @return boolean |
|
1975
|
|
|
*/ |
|
1976
|
|
|
protected function selectors(&$out) |
|
1977
|
|
|
{ |
|
1978
|
|
|
$s = $this->seek(); |
|
1979
|
|
|
$selectors = []; |
|
1980
|
|
|
|
|
1981
|
|
|
while ($this->selector($sel)) { |
|
1982
|
|
|
$selectors[] = $sel; |
|
1983
|
|
|
|
|
1984
|
|
|
if (! $this->literal(',')) { |
|
1985
|
|
|
break; |
|
1986
|
|
|
} |
|
1987
|
|
|
|
|
1988
|
|
|
while ($this->literal(',')) { |
|
1989
|
|
|
; // ignore extra |
|
1990
|
|
|
} |
|
1991
|
|
|
} |
|
1992
|
|
|
|
|
1993
|
|
|
if (count($selectors) === 0) { |
|
1994
|
|
|
$this->seek($s); |
|
1995
|
|
|
|
|
1996
|
|
|
return false; |
|
1997
|
|
|
} |
|
1998
|
|
|
|
|
1999
|
|
|
$out = $selectors; |
|
2000
|
|
|
|
|
2001
|
|
|
return true; |
|
2002
|
|
|
} |
|
2003
|
|
|
|
|
2004
|
|
|
/** |
|
2005
|
|
|
* Parse whitespace separated selector list |
|
2006
|
|
|
* |
|
2007
|
|
|
* @param array $out |
|
2008
|
|
|
* |
|
2009
|
|
|
* @return boolean |
|
2010
|
|
|
*/ |
|
2011
|
|
|
protected function selector(&$out) |
|
2012
|
|
|
{ |
|
2013
|
|
|
$selector = []; |
|
2014
|
|
|
|
|
2015
|
|
|
for (;;) { |
|
2016
|
|
|
if ($this->match('[>+~]+', $m)) { |
|
2017
|
|
|
$selector[] = [$m[0]]; |
|
2018
|
|
|
continue; |
|
2019
|
|
|
} |
|
2020
|
|
|
|
|
2021
|
|
|
if ($this->selectorSingle($part)) { |
|
2022
|
|
|
$selector[] = $part; |
|
2023
|
|
|
$this->match('\s+', $m); |
|
2024
|
|
|
continue; |
|
2025
|
|
|
} |
|
2026
|
|
|
|
|
2027
|
|
|
if ($this->match('\/[^\/]+\/', $m)) { |
|
2028
|
|
|
$selector[] = [$m[0]]; |
|
2029
|
|
|
continue; |
|
2030
|
|
|
} |
|
2031
|
|
|
|
|
2032
|
|
|
break; |
|
2033
|
|
|
} |
|
2034
|
|
|
|
|
2035
|
|
|
if (count($selector) === 0) { |
|
2036
|
|
|
return false; |
|
2037
|
|
|
} |
|
2038
|
|
|
|
|
2039
|
|
|
$out = $selector; |
|
2040
|
|
|
return true; |
|
2041
|
|
|
} |
|
2042
|
|
|
|
|
2043
|
|
|
/** |
|
2044
|
|
|
* Parse the parts that make up a selector |
|
2045
|
|
|
* |
|
2046
|
|
|
* {@internal |
|
2047
|
|
|
* div[yes=no]#something.hello.world:nth-child(-2n+1)%placeholder |
|
2048
|
|
|
* }} |
|
2049
|
|
|
* |
|
2050
|
|
|
* @param array $out |
|
2051
|
|
|
* |
|
2052
|
|
|
* @return boolean |
|
|
|
|
|
|
2053
|
|
|
*/ |
|
2054
|
|
|
protected function selectorSingle(&$out) |
|
2055
|
|
|
{ |
|
2056
|
|
|
$oldWhite = $this->eatWhiteDefault; |
|
2057
|
|
|
$this->eatWhiteDefault = false; |
|
2058
|
|
|
|
|
2059
|
|
|
$parts = []; |
|
2060
|
|
|
|
|
2061
|
|
|
if ($this->literal('*', false)) { |
|
2062
|
|
|
$parts[] = '*'; |
|
2063
|
|
|
} |
|
2064
|
|
|
|
|
2065
|
|
|
for (;;) { |
|
2066
|
|
|
// see if we can stop early |
|
2067
|
|
|
if ($this->match('\s*[{,]', $m)) { |
|
2068
|
|
|
$this->count--; |
|
2069
|
|
|
break; |
|
2070
|
|
|
} |
|
2071
|
|
|
|
|
2072
|
|
|
$s = $this->seek(); |
|
2073
|
|
|
|
|
2074
|
|
|
// self |
|
2075
|
|
|
if ($this->literal('&', false)) { |
|
2076
|
|
|
$parts[] = Compiler::$selfSelector; |
|
2077
|
|
|
continue; |
|
2078
|
|
|
} |
|
2079
|
|
|
|
|
2080
|
|
|
if ($this->literal('.', false)) { |
|
2081
|
|
|
$parts[] = '.'; |
|
2082
|
|
|
continue; |
|
2083
|
|
|
} |
|
2084
|
|
|
|
|
2085
|
|
|
if ($this->literal('|', false)) { |
|
2086
|
|
|
$parts[] = '|'; |
|
2087
|
|
|
continue; |
|
2088
|
|
|
} |
|
2089
|
|
|
|
|
2090
|
|
|
if ($this->match('\\\\\S', $m)) { |
|
2091
|
|
|
$parts[] = $m[0]; |
|
2092
|
|
|
continue; |
|
2093
|
|
|
} |
|
2094
|
|
|
|
|
2095
|
|
|
// for keyframes |
|
2096
|
|
|
if ($this->unit($unit)) { |
|
2097
|
|
|
$parts[] = $unit; |
|
2098
|
|
|
continue; |
|
2099
|
|
|
} |
|
2100
|
|
|
|
|
2101
|
|
|
if ($this->keyword($name)) { |
|
2102
|
|
|
$parts[] = $name; |
|
2103
|
|
|
continue; |
|
2104
|
|
|
} |
|
2105
|
|
|
|
|
2106
|
|
|
if ($this->interpolation($inter)) { |
|
2107
|
|
|
$parts[] = $inter; |
|
2108
|
|
|
continue; |
|
2109
|
|
|
} |
|
2110
|
|
|
|
|
2111
|
|
|
if ($this->literal('%', false) && $this->placeholder($placeholder)) { |
|
2112
|
|
|
$parts[] = '%'; |
|
2113
|
|
|
$parts[] = $placeholder; |
|
2114
|
|
|
continue; |
|
2115
|
|
|
} |
|
2116
|
|
|
|
|
2117
|
|
|
if ($this->literal('#', false)) { |
|
2118
|
|
|
$parts[] = '#'; |
|
2119
|
|
|
continue; |
|
2120
|
|
|
} |
|
2121
|
|
|
|
|
2122
|
|
|
// a pseudo selector |
|
2123
|
|
|
if ($this->match('::?', $m) && $this->mixedKeyword($nameParts)) { |
|
2124
|
|
|
$parts[] = $m[0]; |
|
2125
|
|
|
|
|
2126
|
|
|
foreach ($nameParts as $sub) { |
|
2127
|
|
|
$parts[] = $sub; |
|
2128
|
|
|
} |
|
2129
|
|
|
|
|
2130
|
|
|
$ss = $this->seek(); |
|
2131
|
|
|
|
|
2132
|
|
|
if ($this->literal('(') && |
|
2133
|
|
|
($this->openString(')', $str, '(') || true) && |
|
2134
|
|
|
$this->literal(')') |
|
2135
|
|
|
) { |
|
2136
|
|
|
$parts[] = '('; |
|
2137
|
|
|
|
|
2138
|
|
|
if (! empty($str)) { |
|
2139
|
|
|
$parts[] = $str; |
|
2140
|
|
|
} |
|
2141
|
|
|
|
|
2142
|
|
|
$parts[] = ')'; |
|
2143
|
|
|
} else { |
|
2144
|
|
|
$this->seek($ss); |
|
2145
|
|
|
} |
|
2146
|
|
|
|
|
2147
|
|
|
continue; |
|
2148
|
|
|
} |
|
2149
|
|
|
|
|
2150
|
|
|
$this->seek($s); |
|
2151
|
|
|
|
|
2152
|
|
|
// attribute selector |
|
2153
|
|
|
if ($this->literal('[') && |
|
2154
|
|
|
($this->openString(']', $str, '[') || true) && |
|
2155
|
|
|
$this->literal(']') |
|
2156
|
|
|
) { |
|
2157
|
|
|
$parts[] = '['; |
|
2158
|
|
|
|
|
2159
|
|
|
if (! empty($str)) { |
|
2160
|
|
|
$parts[] = $str; |
|
2161
|
|
|
} |
|
2162
|
|
|
|
|
2163
|
|
|
$parts[] = ']'; |
|
2164
|
|
|
|
|
2165
|
|
|
continue; |
|
2166
|
|
|
} |
|
2167
|
|
|
|
|
2168
|
|
|
$this->seek($s); |
|
2169
|
|
|
|
|
2170
|
|
|
break; |
|
2171
|
|
|
} |
|
2172
|
|
|
|
|
2173
|
|
|
$this->eatWhiteDefault = $oldWhite; |
|
2174
|
|
|
|
|
2175
|
|
|
if (count($parts) === 0) { |
|
2176
|
|
|
return false; |
|
2177
|
|
|
} |
|
2178
|
|
|
|
|
2179
|
|
|
$out = $parts; |
|
2180
|
|
|
|
|
2181
|
|
|
return true; |
|
2182
|
|
|
} |
|
2183
|
|
|
|
|
2184
|
|
|
/** |
|
2185
|
|
|
* Parse a variable |
|
2186
|
|
|
* |
|
2187
|
|
|
* @param array $out |
|
2188
|
|
|
* |
|
2189
|
|
|
* @return boolean |
|
2190
|
|
|
*/ |
|
2191
|
|
|
protected function variable(&$out) |
|
2192
|
|
|
{ |
|
2193
|
|
|
$s = $this->seek(); |
|
2194
|
|
|
|
|
2195
|
|
|
if ($this->literal('$', false) && $this->keyword($name)) { |
|
2196
|
|
|
$out = [Type::T_VARIABLE, $name]; |
|
2197
|
|
|
|
|
2198
|
|
|
return true; |
|
2199
|
|
|
} |
|
2200
|
|
|
|
|
2201
|
|
|
$this->seek($s); |
|
2202
|
|
|
|
|
|
|
|
|
|
2203
|
|
|
return false; |
|
2204
|
|
|
} |
|
2205
|
|
|
|
|
2206
|
|
|
/** |
|
2207
|
|
|
* Parse a keyword |
|
2208
|
|
|
* |
|
2209
|
|
|
* @param string $word |
|
2210
|
|
|
* @param boolean $eatWhitespace |
|
2211
|
|
|
* |
|
2212
|
|
|
* @return boolean |
|
2213
|
|
|
*/ |
|
2214
|
|
|
protected function keyword(&$word, $eatWhitespace = null) |
|
2215
|
|
|
{ |
|
2216
|
|
|
if ($this->match( |
|
2217
|
|
|
$this->utf8 |
|
2218
|
|
|
? '(([\pL\w_\-\*!"\']|[\\\\].)([\pL\w\-_"\']|[\\\\].)*)' |
|
2219
|
|
|
: '(([\w_\-\*!"\']|[\\\\].)([\w\-_"\']|[\\\\].)*)', |
|
2220
|
|
|
$m, |
|
2221
|
|
|
$eatWhitespace |
|
2222
|
|
|
)) { |
|
2223
|
|
|
$word = $m[1]; |
|
2224
|
|
|
|
|
2225
|
|
|
return true; |
|
2226
|
|
|
} |
|
2227
|
|
|
|
|
2228
|
|
|
return false; |
|
2229
|
|
|
} |
|
2230
|
|
|
|
|
2231
|
|
|
/** |
|
2232
|
|
|
* Parse a placeholder |
|
2233
|
|
|
* |
|
2234
|
|
|
* @param string $placeholder |
|
2235
|
|
|
* |
|
2236
|
|
|
* @return boolean |
|
2237
|
|
|
*/ |
|
2238
|
|
|
protected function placeholder(&$placeholder) |
|
2239
|
|
|
{ |
|
2240
|
|
|
if ($this->match( |
|
2241
|
|
|
$this->utf8 |
|
2242
|
|
|
? '([\pL\w\-_]+|#[{][$][\pL\w\-_]+[}])' |
|
2243
|
|
|
: '([\w\-_]+|#[{][$][\w\-_]+[}])', |
|
2244
|
|
|
$m |
|
2245
|
|
|
)) { |
|
2246
|
|
|
$placeholder = $m[1]; |
|
2247
|
|
|
|
|
2248
|
|
|
return true; |
|
2249
|
|
|
} |
|
2250
|
|
|
|
|
2251
|
|
|
return false; |
|
2252
|
|
|
} |
|
2253
|
|
|
|
|
2254
|
|
|
/** |
|
2255
|
|
|
* Parse a url |
|
2256
|
|
|
* |
|
2257
|
|
|
* @param array $out |
|
2258
|
|
|
* |
|
2259
|
|
|
* @return boolean |
|
2260
|
|
|
*/ |
|
2261
|
|
|
protected function url(&$out) |
|
2262
|
|
|
{ |
|
|
|
|
|
|
2263
|
|
|
if ($this->match('(url\(\s*(["\']?)([^)]+)\2\s*\))', $m)) { |
|
2264
|
|
|
$out = [Type::T_STRING, '', ['url(' . $m[2] . $m[3] . $m[2] . ')']]; |
|
2265
|
|
|
|
|
2266
|
|
|
return true; |
|
2267
|
|
|
} |
|
2268
|
|
|
|
|
2269
|
|
|
return false; |
|
2270
|
|
|
} |
|
2271
|
|
|
|
|
2272
|
|
|
/** |
|
2273
|
|
|
* Consume an end of statement delimiter |
|
2274
|
|
|
* |
|
2275
|
|
|
* @return boolean |
|
2276
|
|
|
*/ |
|
2277
|
|
|
protected function end() |
|
2278
|
|
|
{ |
|
2279
|
|
|
if ($this->literal(';')) { |
|
2280
|
|
|
return true; |
|
2281
|
|
|
} |
|
2282
|
|
|
|
|
2283
|
|
|
if ($this->count === strlen($this->buffer) || $this->buffer[$this->count] === '}') { |
|
2284
|
|
|
// if there is end of file or a closing block next then we don't need a ; |
|
2285
|
|
|
return true; |
|
2286
|
|
|
} |
|
2287
|
|
|
|
|
2288
|
|
|
return false; |
|
2289
|
|
|
} |
|
2290
|
|
|
|
|
2291
|
|
|
/** |
|
2292
|
|
|
* Strip assignment flag from the list |
|
2293
|
|
|
* |
|
2294
|
|
|
* @param array $value |
|
2295
|
|
|
* |
|
2296
|
|
|
* @return array |
|
2297
|
|
|
*/ |
|
2298
|
|
|
protected function stripAssignmentFlags(&$value) |
|
2299
|
|
|
{ |
|
2300
|
|
|
$flags = []; |
|
2301
|
|
|
|
|
2302
|
|
|
for ($token = &$value; $token[0] === Type::T_LIST && ($s = count($token[2])); $token = &$lastNode) { |
|
2303
|
|
|
$lastNode = &$token[2][$s - 1]; |
|
2304
|
|
|
|
|
2305
|
|
|
while ($lastNode[0] === Type::T_KEYWORD && in_array($lastNode[1], ['!default', '!global'])) { |
|
2306
|
|
|
array_pop($token[2]); |
|
2307
|
|
|
|
|
2308
|
|
|
$node = end($token[2]); |
|
2309
|
|
|
|
|
2310
|
|
|
$token = $this->flattenList($token); |
|
2311
|
|
|
|
|
2312
|
|
|
$flags[] = $lastNode[1]; |
|
2313
|
|
|
|
|
2314
|
|
|
$lastNode = $node; |
|
2315
|
|
|
} |
|
2316
|
|
|
} |
|
2317
|
|
|
|
|
2318
|
|
|
return $flags; |
|
2319
|
|
|
} |
|
2320
|
|
|
|
|
2321
|
|
|
/** |
|
2322
|
|
|
* Strip optional flag from selector list |
|
2323
|
|
|
* |
|
2324
|
|
|
* @param array $selectors |
|
2325
|
|
|
* |
|
2326
|
|
|
* @return string |
|
2327
|
|
|
*/ |
|
2328
|
|
|
protected function stripOptionalFlag(&$selectors) |
|
2329
|
|
|
{ |
|
2330
|
|
|
$optional = false; |
|
2331
|
|
|
|
|
2332
|
|
|
$selector = end($selectors); |
|
2333
|
|
|
$part = end($selector); |
|
2334
|
|
|
|
|
2335
|
|
|
if ($part === ['!optional']) { |
|
2336
|
|
|
array_pop($selectors[count($selectors) - 1]); |
|
2337
|
|
|
|
|
2338
|
|
|
$optional = true; |
|
2339
|
|
|
} |
|
2340
|
|
|
|
|
2341
|
|
|
return $optional; |
|
2342
|
|
|
} |
|
2343
|
|
|
|
|
2344
|
|
|
/** |
|
2345
|
|
|
* Turn list of length 1 into value type |
|
2346
|
|
|
* |
|
2347
|
|
|
* @param array $value |
|
2348
|
|
|
* |
|
2349
|
|
|
* @return array |
|
2350
|
|
|
*/ |
|
2351
|
|
|
protected function flattenList($value) |
|
2352
|
|
|
{ |
|
2353
|
|
|
if ($value[0] === Type::T_LIST && count($value[2]) === 1) { |
|
2354
|
|
|
return $this->flattenList($value[2][0]); |
|
2355
|
|
|
} |
|
2356
|
|
|
|
|
2357
|
|
|
return $value; |
|
2358
|
|
|
} |
|
2359
|
|
|
|
|
2360
|
|
|
/** |
|
2361
|
|
|
* @deprecated |
|
2362
|
|
|
* |
|
2363
|
|
|
* {@internal |
|
2364
|
|
|
* advance counter to next occurrence of $what |
|
2365
|
|
|
* $until - don't include $what in advance |
|
2366
|
|
|
* $allowNewline, if string, will be used as valid char set |
|
2367
|
|
|
* }} |
|
2368
|
|
|
*/ |
|
2369
|
|
|
protected function to($what, &$out, $until = false, $allowNewline = false) |
|
2370
|
|
|
{ |
|
2371
|
|
|
if (is_string($allowNewline)) { |
|
2372
|
|
|
$validChars = $allowNewline; |
|
2373
|
|
|
} else { |
|
2374
|
|
|
$validChars = $allowNewline ? '.' : "[^\n]"; |
|
2375
|
|
|
} |
|
2376
|
|
|
|
|
2377
|
|
|
if (! $this->match('(' . $validChars . '*?)' . $this->pregQuote($what), $m, ! $until)) { |
|
2378
|
|
|
return false; |
|
2379
|
|
|
} |
|
2380
|
|
|
|
|
2381
|
|
|
if ($until) { |
|
2382
|
|
|
$this->count -= strlen($what); // give back $what |
|
2383
|
|
|
} |
|
2384
|
|
|
|
|
2385
|
|
|
$out = $m[1]; |
|
2386
|
|
|
|
|
2387
|
|
|
return true; |
|
2388
|
|
|
} |
|
2389
|
|
|
|
|
2390
|
|
|
/** |
|
2391
|
|
|
* @deprecated |
|
2392
|
|
|
*/ |
|
2393
|
|
|
protected function show() |
|
2394
|
|
|
{ |
|
2395
|
|
|
if ($this->peek("(.*?)(\n|$)", $m, $this->count)) { |
|
2396
|
|
|
return $m[1]; |
|
2397
|
|
|
} |
|
2398
|
|
|
|
|
2399
|
|
|
return ''; |
|
2400
|
|
|
} |
|
2401
|
|
|
|
|
2402
|
|
|
/** |
|
2403
|
|
|
* Quote regular expression |
|
2404
|
|
|
* |
|
2405
|
|
|
* @param string $what |
|
2406
|
|
|
* |
|
2407
|
|
|
* @return string |
|
2408
|
|
|
*/ |
|
2409
|
|
|
private function pregQuote($what) |
|
2410
|
|
|
{ |
|
2411
|
|
|
return preg_quote($what, '/'); |
|
2412
|
|
|
} |
|
2413
|
|
|
|
|
2414
|
|
|
/** |
|
2415
|
|
|
* Extract line numbers from buffer |
|
2416
|
|
|
* |
|
2417
|
|
|
* @param string $buffer |
|
2418
|
|
|
*/ |
|
2419
|
|
|
private function extractLineNumbers($buffer) |
|
2420
|
|
|
{ |
|
2421
|
|
|
$this->sourcePositions = [0 => 0]; |
|
2422
|
|
|
$prev = 0; |
|
2423
|
|
|
|
|
2424
|
|
|
while (($pos = strpos($buffer, "\n", $prev)) !== false) { |
|
2425
|
|
|
$this->sourcePositions[] = $pos; |
|
2426
|
|
|
$prev = $pos + 1; |
|
2427
|
|
|
} |
|
2428
|
|
|
|
|
2429
|
|
|
$this->sourcePositions[] = strlen($buffer); |
|
2430
|
|
|
|
|
2431
|
|
|
if (substr($buffer, -1) !== "\n") { |
|
2432
|
|
|
$this->sourcePositions[] = strlen($buffer) + 1; |
|
2433
|
|
|
} |
|
2434
|
|
|
} |
|
2435
|
|
|
|
|
2436
|
|
|
/** |
|
2437
|
|
|
* Get source line number and column (given character position in the buffer) |
|
2438
|
|
|
* |
|
2439
|
|
|
* @param integer $pos |
|
2440
|
|
|
* |
|
2441
|
|
|
* @return integer |
|
2442
|
|
|
*/ |
|
2443
|
|
|
private function getSourcePosition($pos) |
|
2444
|
|
|
{ |
|
2445
|
|
|
$low = 0; |
|
2446
|
|
|
$high = count($this->sourcePositions); |
|
2447
|
|
|
|
|
2448
|
|
|
while ($low < $high) { |
|
2449
|
|
|
$mid = (int) (($high + $low) / 2); |
|
2450
|
|
|
|
|
2451
|
|
|
if ($pos < $this->sourcePositions[$mid]) { |
|
2452
|
|
|
$high = $mid - 1; |
|
2453
|
|
|
continue; |
|
2454
|
|
|
} |
|
2455
|
|
|
|
|
2456
|
|
|
if ($pos >= $this->sourcePositions[$mid + 1]) { |
|
2457
|
|
|
$low = $mid + 1; |
|
2458
|
|
|
continue; |
|
2459
|
|
|
} |
|
2460
|
|
|
|
|
2461
|
|
|
return [$mid + 1, $pos - $this->sourcePositions[$mid]]; |
|
2462
|
|
|
} |
|
2463
|
|
|
|
|
2464
|
|
|
return [$low + 1, $pos - $this->sourcePositions[$low]]; |
|
2465
|
|
|
} |
|
2466
|
|
|
|
|
2467
|
|
|
/** |
|
2468
|
|
|
* Save internal encoding |
|
2469
|
|
|
*/ |
|
2470
|
|
|
private function saveEncoding() |
|
2471
|
|
|
{ |
|
2472
|
|
|
if (version_compare(PHP_VERSION, '7.2.0') >= 0) { |
|
2473
|
|
|
return; |
|
2474
|
|
|
} |
|
2475
|
|
|
|
|
2476
|
|
|
$iniDirective = 'mbstring' . '.func_overload'; // deprecated in PHP 7.2 |
|
2477
|
|
|
|
|
2478
|
|
|
if (ini_get($iniDirective) & 2) { |
|
2479
|
|
|
$this->encoding = mb_internal_encoding(); |
|
2480
|
|
|
|
|
2481
|
|
|
mb_internal_encoding('iso-8859-1'); |
|
2482
|
|
|
} |
|
2483
|
|
|
} |
|
2484
|
|
|
|
|
2485
|
|
|
/** |
|
2486
|
|
|
* Restore internal encoding |
|
2487
|
|
|
*/ |
|
2488
|
|
|
private function restoreEncoding() |
|
2489
|
|
|
{ |
|
2490
|
|
|
if ($this->encoding) { |
|
2491
|
|
|
mb_internal_encoding($this->encoding); |
|
2492
|
|
|
} |
|
2493
|
|
|
} |
|
2494
|
|
|
} |
|
2495
|
|
|
|
lightspeeddevelopment /
lsx-customizer
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