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<?php

/**
 * Element
 *
 * @package Less
 * @subpackage tree
 */
class Less_Tree_Element extends Less_Tree{

public $combinator = '';
	public $value = '';
	public $index;
	public $currentFileInfo;
	public $type = 'Element';

public $value_is_object = false;

public function __construct($combinator, $value, $index = null, $currentFileInfo = null ){

$this->value = $value;
		$this->value_is_object = is_object($value);

if( $combinator ){
			$this->combinator = $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){

if( Less_Environment::$mixin_stack ){
			return new Less_Tree_Element($this->combinator, ($this->value_is_object ? $this->value->compile($env) : $this->value), $this->index, $this->currentFileInfo );
		}

if( $this->value_is_object ){
			$this->value = $this->value->compile($env);
		}

return $this;
	}

/**
     * @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;
	}

}