JSP tag parser in Ruby using Parslet

jsp_tag_parser.rb

class JSPTagParser < Parslet::Parser
  rule(:java) { (str('%>').absent? >> any).repeat.as(:java) }
  rule(:jsp) { java.as(:code) }
  rule(:jsp_with_tags) { str('<%') >> jsp >> str('%>') }
  rule(:text) { (str('<%').absent? >> any).repeat(1) }
  rule(:text_with_java) { (text.as(:text) | jsp_with_tags).repeat.as(:text) }
  root(:text_with_java)
end