Merge pull request ruby#365 from ydah/use-def_delegators

Use `def_delegators` in Lrama::States::Item
yui-knk · Jan 29, 2024 · 56b36fb · 56b36fb
2 parents 73a6aa9 + 085cd4e
commit 56b36fb
Showing 1 changed file with 6 additions and 8 deletions.
diff --git a/lib/lrama/states/item.rb b/lib/lrama/states/item.rb
@@ -1,8 +1,14 @@
 # TODO: Validate position is not over rule rhs
 
+require "forwardable"
+
 module Lrama
   class States
     class Item < Struct.new(:rule, :position, keyword_init: true)
+      extend Forwardable
+
+      def_delegators "rule", :lhs, :rhs
+
       # Optimization for States#setup_state
       def hash
         [rule_id, position].hash
@@ -20,14 +26,6 @@ def number_of_rest_symbols
         rhs.count - position
       end
 
-      def lhs
-        rule.lhs
-      end
-
-      def rhs
-        rule.rhs
-      end
-
       def next_sym
         rhs[position]
       end