<?php
 class Less_Tree_Negative extends Less_Tree{ public $value; public $type = 'Negative'; public function __construct($node){ $this->value = $node; } public function genCSS( $output ){ $output->add( '-' ); $this->value->genCSS( $output ); } public function compile($env) { if( Less_Environment::isMathOn() ){ $ret = new Less_Tree_Operation('*', array( new Less_Tree_Dimension(-1), $this->value ) ); return $ret->compile($env); } return new Less_Tree_Negative( $this->value->compile($env) ); } }