lib/lrama/state/resolved_conflict.rb in lrama-0.6.9 vs lib/lrama/state/resolved_conflict.rb in lrama-0.6.10

@@ -1,13 +1,15 @@
+# frozen_string_literal: true
+
 module Lrama
   class State
     # * symbol: A symbol under discussion
     # * reduce: A reduce under discussion
     # * which: For which a conflict is resolved. :shift, :reduce or :error (for nonassociative)
     class ResolvedConflict < Struct.new(:symbol, :reduce, :which, :same_prec, keyword_init: true)
       def report_message
         s = symbol.display_name
-        r = reduce.rule.precedence_sym.display_name
+        r = reduce.rule.precedence_sym&.display_name
         case
         when which == :shift && same_prec
           msg = "resolved as #{which} (%right #{s})"
         when which == :shift
           msg = "resolved as #{which} (#{r} < #{s})"