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Class: OptionParser::Switch::OptionalArgument

Relationships & Source Files
Super Chains via Extension / Inclusion / Inheritance
Class Chain:
Instance Chain:
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

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