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<?php
/**
* @private
*/
class Less_Tree_Element extends Less_Tree {
/** @var string */
public $combinator;
/** @var bool Whether combinator is null (represented by empty string) or child (single space) */
public $combinatorIsEmptyOrWhitespace;
/** @var string|Less_Tree */
public $value;
public $index;
public $currentFileInfo;
public $type = 'Element';
public $value_is_object = false;
/**
* @param null|string $combinator
* @param string|Less_Tree $value
* @param int|null $index
* @param array|null $currentFileInfo
*/
public function __construct( $combinator, $value, $index = null, $currentFileInfo = null ) {
$this->value = $value;
$this->value_is_object = is_object( $value );
// see less-2.5.3.js#Combinator
$this->combinator = $combinator ?? '';
$this->combinatorIsEmptyOrWhitespace = ( $combinator === null || trim( $combinator ) === '' );
$this->index = $index;
$this->currentFileInfo = $currentFileInfo;
}
public function accept( $visitor ) {
if ( $this->value_is_object ) { // object or string
$this->value = $visitor->visitObj( $this->value );
}
}
public function compile( $env ) {
return new Less_Tree_Element(
$this->combinator,
( $this->value_is_object ? $this->value->compile( $env ) : $this->value ),
$this->index,
$this->currentFileInfo
);
}
/**
* @see Less_Tree::genCSS
*/
public function genCSS( $output ) {
$output->add( $this->toCSS(), $this->currentFileInfo, $this->index );
}
public function toCSS() {
if ( $this->value_is_object ) {
$value = $this->value->toCSS();
} else {
$value = $this->value;
}
if ( $value === '' && $this->combinator && $this->combinator === '&' ) {
return '';
}
return Less_Environment::$_outputMap[$this->combinator] . $value;
}
}
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