Negative.php
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Negative.php
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	<?php
	/**
	* @private
	*/
	class Less_Tree_Negative extends Less_Tree implements Less_Tree_HasValueProperty {

	public $value;

	public function __construct( $node ) {
	$this->value = $node;
	}

	/**
	* @see Less_Tree::genCSS
	*/
	public function genCSS( $output ) {
	$output->add( '-' );
	$this->value->genCSS( $output );
	}

	public function compile( $env ) {
	if ( $env->isMathOn() ) {
	$ret = new Less_Tree_Operation( '*', [ new Less_Tree_Dimension( -1 ), $this->value ] );
	return $ret->compile( $env );
	}
	return new self( $this->value->compile( $env ) );
	}
	}