module Janis

	module Parsing

		module Validations

      def self.validate(entry)
        validate_matchable(entry)
        validate_format(entry)
        # Add specific validations like "must not include letters", "must not include special chars other than : or . . ."
        # "numbers separated by the . must not have more than 3 digits"
        # etcetera
      end

      private
      
      def self.validate_matchable(entry)
        raise "Entry is does not respond to #match." unless entry.respond_to?(:match)
      end
      
      def self.validate_format(entry)
        format_regex = /\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\:\d{1,5}/
        raise "Entry has an invalid format." unless entry.matches? FORMAT_REGEX # This one covers unexpected situations 
      end

		end

	end

end