lib/grumlin/step.rb in grumlin-0.10.0 vs lib/grumlin/step.rb in grumlin-0.10.1

@@ -8,11 +8,21 @@
       super(name, *args, previous_step: previous_step)
       @pool = pool
     end
 
     def next
-      @enum ||= toList.to_enum
-      @enum.next
+      to_enum.next
+    end
+
+    def hasNext # rubocop:disable Naming/MethodName
+      to_enum.peek
+      true
+    rescue StopIteration
+      false
+    end
+
+    def to_enum
+      @to_enum ||= toList.to_enum
     end
 
     def toList
       @pool.acquire do |client|
         client.write(bytecode)