Merge pull request #1455 from kk-ds-000/perf/avoid-more-regexes

Avoid regex allocations by checking arity condition first

Author: lsegal

lib/yard/parser/ruby/ruby_parser.rb

@@ -144,7 +144,7 @@ def file_encoding
         PARSER_EVENT_TABLE.each do |event, arity|
           node_class = AstNode.node_class_for(event)
 
-          if /_new\z/ =~ event.to_s && arity == 0
+          if arity == 0 && /_new\z/ =~ event.to_s
             module_eval(<<-eof, __FILE__, __LINE__ + 1)
               def on_#{event}(*args)
                 #{node_class}.new(:list, args, :listchar => charno...charno, :listline => lineno..lineno)