class ActionDispatch::Journey::Scanner

def scan
  case
    # /
  when text = @ss.scan(/\//)
    [:SLASH, text]
  when text = @ss.scan(/\*\w+/)
    [:STAR, text]
  when text = @ss.scan(/\(/)
    [:LPAREN, text]
  when text = @ss.scan(/\)/)
    [:RPAREN, text]
  when text = @ss.scan(/\|/)
    [:OR, text]
  when text = @ss.scan(/\./)
    [:DOT, text]
  when text = @ss.scan(/:\w+/)
    [:SYMBOL, text]
  when text = @ss.scan(/[\w%\-~]+/)
    [:LITERAL, text]
    # any char
  when text = @ss.scan(/./)
    [:LITERAL, text]
  end
end