Class: OptionParser::Switch::OptionalArgument

Inherits:
OptionParser::Switch show all
Defined in:
lib/optparse.rb

Overview

Switch that can omit argument.

Instance Attribute Summary

Attributes inherited from OptionParser::Switch

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

Instance Method Summary collapse

Methods inherited from OptionParser::Switch

#add_banner, #compsys, guess, incompatible_argument_styles, #initialize, #match_nonswitch?, #omitted_argument, pattern, #pretty_print, #pretty_print_contents, #summarize, #switch_name

Constructor Details

This class inherits a constructor from OptionParser::Switch

Instance Method Details

#parse(arg, argv, &error) ⇒ Object

Parses argument if given, or uses default value.



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# File 'lib/optparse.rb', line 763

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

#pretty_head ⇒ Object

:nodoc:



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# File 'lib/optparse.rb', line 771

def pretty_head           # :nodoc:
  "Optional"
end