Ripper::Lexer bit predicates

* ext/ripper/lib/ripper/lexer.rb (Ripper::Lexer): added allbits?,
  anybits? and nobits? methods, as well as Integer.  a patch by
  aycabta.  [Feature #14170]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61205 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ext/ripper/lib/ripper/lexer.rb

@@ -54,6 +54,9 @@ class Ripper
       def ==(i) super or to_int == i end
       def &(i) self.class.new(to_int & i) end
       def |(i) self.class.new(to_int & i) end
+      def allbits?(i) to_int.allbits?(i) end
+      def anybits?(i) to_int.anybits?(i) end
+      def nobits?(i) to_int.nobits?(i) end
     end
 
     Elem = Struct.new(:pos, :event, :tok, :state) do