1 files changed, 15 insertions, 0 deletions
diff --git a/tool/lrama/lib/lrama/grammar/counter.rb b/tool/lrama/lib/lrama/grammar/counter.rb
new file mode 100644
index 0000000000..c13f4ec3e3
--- /dev/null
+++ b/tool/lrama/lib/lrama/grammar/counter.rb
@@ -0,0 +1,15 @@
+module Lrama
+  class Grammar
+    class Counter
+      def initialize(number)
+        @number = number
+      end
+
+      def increment
+        n = @number
+        @number += 1
+        n
+      end
+    end
+  end
+end