1 files changed, 21 insertions, 0 deletions
diff --git a/tool/lrama/lib/lrama/counterexamples/triple.rb b/tool/lrama/lib/lrama/counterexamples/triple.rb
new file mode 100644
index 0000000000..e802beccf4
--- /dev/null
+++ b/tool/lrama/lib/lrama/counterexamples/triple.rb
@@ -0,0 +1,21 @@
+module Lrama
+  class Counterexamples
+    # s: state
+    # itm: item within s
+    # l: precise lookahead set
+    class Triple < Struct.new(:s, :itm, :l)
+      alias :state :s
+      alias :item :itm
+      alias :precise_lookahead_set :l
+
+      def state_item
+        StateItem.new(state, item)
+      end
+
+      def inspect
+        "#{state.inspect}. #{item.display_name}. #{l.map(&:id).map(&:s_value)}"
+      end
+      alias :to_s :inspect
+    end
+  end
+end