Cache ItemSet#next_symbols - #28

2024-07-25 20:33:15 -04:00 · 2024-07-25 20:33:15 -04:00 · 95b3dc6550
commit 95b3dc6550
parent 74d94fef72
1 changed files with 1 additions and 1 deletions
--- a/lib/propane/parser/item_set.rb
+++ b/lib/propane/parser/item_set.rb
@ -46,7 +46,7 @@ class Propane
      # @return [Set<Token, RuleSet>]
      #   Set of next symbols for all Items in this ItemSet.
      def next_symbols
-        Set.new(@items.map(&:next_symbol).compact)
+        @_next_symbols ||= Set.new(@items.map(&:next_symbol).compact)
      end

      # Build a next ItemSet for the given next symbol.