--- /dev/null
+<?php
+
+/**
+ * Visitor
+ *
+ * @package Less
+ * @subpackage visitor
+ */
+class Less_Visitor{
+
+ protected $methods = array();
+ protected $_visitFnCache = array();
+
+ public function __construct(){
+ $this->_visitFnCache = get_class_methods(get_class($this));
+ $this->_visitFnCache = array_flip($this->_visitFnCache);
+ }
+
+ public function visitObj( $node ){
+
+ $funcName = 'visit'.$node->type;
+ if( isset($this->_visitFnCache[$funcName]) ){
+
+ $visitDeeper = true;
+ $this->$funcName( $node, $visitDeeper );
+
+ if( $visitDeeper ){
+ $node->accept($this);
+ }
+
+ $funcName = $funcName . "Out";
+ if( isset($this->_visitFnCache[$funcName]) ){
+ $this->$funcName( $node );
+ }
+
+ }else{
+ $node->accept($this);
+ }
+
+ return $node;
+ }
+
+ public function visitArray( $nodes ){
+
+ array_map( array($this,'visitObj'), $nodes);
+ return $nodes;
+ }
+}
+