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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
Defined in: lib/optparse.rb

Overview

::OptionParser::Switch that can omit argument.

Class Method Summary

::OptionParser::Switch - Inherited

.guess

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

Instance Attribute Summary

::OptionParser::Switch - Inherited

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

Instance Method Summary

::OptionParser::Switch - Inherited

#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.

Constructor Details

This class inherits a constructor from OptionParser::Switch

Instance Method Details

#parse(arg, argv, &error)

Parses argument if given, or uses default value.

[ GitHub ] 

  


# File 'lib/optparse.rb', line 543



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