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<?php
/**
* Variable
*
* @package Less
* @subpackage tree
*/
class Less_Tree_Variable extends Less_Tree{
public $name;
public $index;
public $currentFileInfo;
public $evaluating = false;
public $type = 'Variable';
/**
* @param string $name
*/
public function __construct($name, $index = null, $currentFileInfo = null) {
$this->name = $name;
$this->index = $index;
$this->currentFileInfo = $currentFileInfo;
}
public function compile($env) {
if( $this->name[1] === '@' ){
$v = new Less_Tree_Variable(substr($this->name, 1), $this->index + 1, $this->currentFileInfo);
$name = '@' . $v->compile($env)->value;
}else{
$name = $this->name;
}
if ($this->evaluating) {
throw new Less_Exception_Compiler("Recursive variable definition for " . $name, null, $this->index, $this->currentFileInfo);
}
$this->evaluating = true;
foreach($env->frames as $frame){
if( $v = $frame->variable($name) ){
$r = $v->value->compile($env);
$this->evaluating = false;
return $r;
}
}
throw new Less_Exception_Compiler("variable " . $name . " is undefined in file ".$this->currentFileInfo["filename"], null, $this->index, $this->currentFileInfo);
}
}
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