ometa: fix predicates extension in applyNext

veged · Jun 14, 2012 · c5d3dfd · c5d3dfd
1 parent 2792a03
commit c5d3dfd
Showing 1 changed file with 10 additions and 8 deletions.
diff --git a/lib/xjst/ometa/xjst.ometajs b/lib/xjst/ometa/xjst.ometajs
@@ -65,16 +65,18 @@ ometa XJSTParser <: BSJSParser {
         -> [#template, this.predicates, b],
 
     applyNextFlag = {
-      var flag = ~~(Math.random() * 1e9);
-      this.predicates = [
+      var flag = ~~(Math.random() * 1e9),
+          predicate = [
+            'binop', '!==',
+            ['getp', ['string', '__$anflg'], ['this']],
+            ['number', flag]
+          ];
+
+      this.predicates = this.predicates.length ? [
         'binop', '&&',
         this.predicates,
-        [
-          'binop', '!==',
-          ['getp', ['string', '__$anflg'], ['this']],
-          ['number', flag]
-        ]
-      ];
+        predicate
+      ] : predicate;
 
       ['set', ['getp', ['string', '__$anflg'], ['this']], ['number', flag]]
     },