module Roda::RodaPlugins::MailProcessor::ClassMethods

def rcpt(*addresses, &block)

of the normal routing tree.
Any messages matching the given recipient address will use these routing trees instead
Setup a routing tree for the given recipient addresses, which can be strings or regexps. 
def rcpt(*addresses, &block)
  opts[:mail_processor_string_routes] ||= {}
  opts[:mail_processor_regexp_routes] ||= {}
  string_meth = nil
  regexp_meth = nil
  addresses.each do |address|
    case address
    when String
      unless string_meth
        string_meth = define_roda_method("mail_processor_string_route_#{address}", 1, &convert_route_block(block))
      end
      opts[:mail_processor_string_routes][address] = string_meth 
    when Regexp
      unless regexp_meth
        regexp_meth = define_roda_method("mail_processor_regexp_route_#{address}", :any, &convert_route_block(block))
      end
      opts[:mail_processor_regexp_routes][address] = regexp_meth
    else
      raise RodaError, "invalid address format passed to rcpt, should be Array or String"
    end
  end
  nil
end