Class: OptionParser::Switch::OptionalArgument

Relationships & Source Files
Super Chains via Extension / Inclusion / Inheritance
Class Chain: self, ::OptionParser::Switch
Instance Chain: self, ::OptionParser::Switch
Inherits:	OptionParser::Switch Object OptionParser::Switch OptionParser::Switch::OptionalArgument
Defined in:	lib/optparse.rb

Overview

::OptionParser::Switch that can omit argument.

.guess	Guesses argument style from #arg.
.incompatible_argument_styles, .new, .pattern

#arg, #block, #conv, #desc, #long, #pattern, #short

#summarize	Produces the summary text.
#switch_name	Main name of the switch.
#conv_arg	Parses argument, converts and returns #arg, #block and result of conversion.
#parse_arg	Parses #arg and returns rest of #arg and matched portion to the argument pattern.
#add_banner, #compsys, #match_nonswitch?

This class inherits a constructor from OptionParser::Switch

Parses argument if given, or uses default value.

[ GitHub ]

# File 'lib/optparse.rb', line 688


def parse(arg, argv, &error)
  if arg
    conv_arg(*parse_arg(arg, &error))
  else
    conv_arg(arg)
  end
end