qrcode.chapril.org/vendor/wikimedia/less.php/lib/Less/Tree/Quoted.php

<?php
/**
 * @private
 */
class Less_Tree_Quoted extends Less_Tree {
	public $escaped;
	public $value;
	public $quote;
	public $index;
	public $currentFileInfo;
	public $type = 'Quoted';

	/**
	 * @param string $str
	 */
	public function __construct( $str, $content = '', $escaped = false, $index = false, $currentFileInfo = null ) {
		$this->escaped = $escaped;
		$this->value = $content;
		if ( $str ) {
			$this->quote = $str[0];
		}
		$this->index = $index;
		$this->currentFileInfo = $currentFileInfo;
	}

	/**
	 * @see Less_Tree::genCSS
	 */
	public function genCSS( $output ) {
		if ( !$this->escaped ) {
			$output->add( $this->quote, $this->currentFileInfo, $this->index );
		}
		$output->add( $this->value );
		if ( !$this->escaped ) {
			$output->add( $this->quote );
		}
	}

	public function compile( $env ) {
		$value = $this->value;
		if ( preg_match_all( '/`([^`]+)`/', $this->value, $matches ) ) {
			foreach ( $matches as $i => $match ) {
				$js = new Less_Tree_JavaScript( $matches[1], $this->index, true );
				$js = $js->compile( $env )->value;
				$value = str_replace( $matches[0][$i], $js, $value );
			}
		}

		if ( preg_match_all( '/@\{([\w-]+)\}/', $value, $matches ) ) {
			foreach ( $matches[1] as $i => $match ) {
				$v = new Less_Tree_Variable( '@' . $match, $this->index, $this->currentFileInfo );
				$v = $v->compile( $env );
				$v = ( $v instanceof Less_Tree_Quoted ) ? $v->value : $v->toCSS();
				$value = str_replace( $matches[0][$i], $v, $value );
			}
		}

		return new Less_Tree_Quoted( $this->quote . $value . $this->quote, $value, $this->escaped, $this->index, $this->currentFileInfo );
	}

	public function compare( $x ) {
		if ( !Less_Parser::is_method( $x, 'toCSS' ) ) {
			return -1;
		}

		$left = $this->toCSS();
		$right = $x->toCSS();

		if ( $left === $right ) {
			return 0;
		}

		return $left < $right ? -1 : 1;
	}
}