1 files changed, 70 insertions, 0 deletions
diff --git a/lib/less.php/Visitor/joinSelector.php b/lib/less.php/Visitor/joinSelector.php
new file mode 100644
index 0000000..f62af1a
--- /dev/null
+++ b/lib/less.php/Visitor/joinSelector.php
@@ -0,0 +1,70 @@
+<?php
+
+/**
+ * Join Selector Visitor
+ *
+ * @package Less
+ * @subpackage visitor
+ */
+class Less_Visitor_joinSelector extends Less_Visitor{
+
+	public $contexts = array( array() );
+
+	/**
+	 * @param Less_Tree_Ruleset $root
+	 */
+	public function run( $root ){
+		return $this->visitObj($root);
+	}
+
+    public function visitRule( $ruleNode, &$visitDeeper ){
+		$visitDeeper = false;
+	}
+
+    public function visitMixinDefinition( $mixinDefinitionNode, &$visitDeeper ){
+		$visitDeeper = false;
+	}
+
+    public function visitRuleset( $rulesetNode ){
+
+		$paths = array();
+
+		if( !$rulesetNode->root ){
+			$selectors = array();
+
+			if( $rulesetNode->selectors && $rulesetNode->selectors ){
+				foreach($rulesetNode->selectors as $selector){
+					if( $selector->getIsOutput() ){
+						$selectors[] = $selector;
+					}
+				}
+			}
+
+			if( !$selectors ){
+				$rulesetNode->selectors = null;
+				$rulesetNode->rules = null;
+			}else{
+				$context = end($this->contexts); //$context = $this->contexts[ count($this->contexts) - 1];
+				$paths = $rulesetNode->joinSelectors( $context, $selectors);
+			}
+
+			$rulesetNode->paths = $paths;
+		}
+
+		$this->contexts[] = $paths; //different from less.js. Placed after joinSelectors() so that $this->contexts will get correct $paths
+	}
+
+    public function visitRulesetOut(){
+		array_pop($this->contexts);
+	}
+
+    public function visitMedia($mediaNode) {
+		$context = end($this->contexts); //$context = $this->contexts[ count($this->contexts) - 1];
+
+		if( !count($context) || (is_object($context[0]) && $context[0]->multiMedia) ){
+			$mediaNode->rules[0]->root = true;
+		}
+	}
+
+}
+