--- /dev/null
+<?php
+
+/**
+ * DefaultFunc
+ *
+ * @package Less
+ * @subpackage tree
+ */
+class Less_Tree_DefaultFunc{
+
+ static $error_;
+ static $value_;
+
+ public static function compile(){
+ if( self::$error_ ){
+ throw new Exception(self::$error_);
+ }
+ if( self::$value_ !== null ){
+ return self::$value_ ? new Less_Tree_Keyword('true') : new Less_Tree_Keyword('false');
+ }
+ }
+
+ public static function value( $v ){
+ self::$value_ = $v;
+ }
+
+ public static function error( $e ){
+ self::$error_ = $e;
+ }
+
+ public static function reset(){
+ self::$value_ = self::$error_ = null;
+ }
+}
\ No newline at end of file