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vendor/wikimedia/less.php/lib/Less/Visitor.php

@@ -0,0 +1,46 @@
+<?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;
+	}
+}