<?php
/**
* Operation
*
* @package Less
* @subpackage tree
*/
class Less_Tree_Operation extends Less_Tree{
public $op;
public $operands;
public $isSpaced;
public $type = 'Operation';
/**
* @param string $op
*/
public function __construct($op, $operands, $isSpaced = false){
$this->op = trim($op);
$this->operands = $operands;
$this->isSpaced = $isSpaced;
}
public function accept($visitor) {
$this->operands = $visitor->visitArray($this->operands);
}
public function compile($env){
$a = $this->operands[0]->compile($env);
$b = $this->operands[1]->compile($env);
if( Less_Environment::isMathOn() ){
if( $a instanceof Less_Tree_Dimension && $b instanceof Less_Tree_Color ){
$a = $a->toColor();
}elseif( $b instanceof Less_Tree_Dimension && $a instanceof Less_Tree_Color ){
$b = $b->toColor();
}
if( !method_exists($a,'operate') ){
throw new Less_Exception_Compiler("Operation on an invalid type");
}
return $a->operate( $this->op, $b);
}
return new Less_Tree_Operation($this->op, array($a, $b), $this->isSpaced );
}
/**
* @see Less_Tree::genCSS
*/
public function genCSS( $output ){
$this->operands[0]->genCSS( $output );
if( $this->isSpaced ){
$output->add( " " );
}
$output->add( $this->op );
if( $this->isSpaced ){
$output->add( ' ' );
}
$this->operands[1]->genCSS( $output );
}
}