Exception: OptionParser::ParseError

Inherits:

RuntimeError

• Object
• RuntimeError
• OptionParser::ParseError

Defined in:

lib/optparse.rb

Overview

Base class of exceptions from OptionParser.

Direct Known Subclasses

AmbiguousOption, InvalidArgument, InvalidOption, MissingArgument, NeedlessArgument

Constant Summary

Reason =

Reason which caused the error.

'parse error'.freeze

Instance Attribute Summary

• #args ⇒ Object readonly

  Returns the value of attribute args.

• #reason ⇒ Object

  Returns error reason.

Class Method Summary

• .filter_backtrace(array) ⇒ Object

Instance Method Summary

• #initialize(*args) ⇒ ParseError constructor

  A new instance of ParseError.

• #inspect ⇒ Object
• #message ⇒ Object (also: #to_s)

  Default stringizing method to emit standard error message.

• #recover(argv) ⇒ Object

  Pushes back erred argument(s) to argv.

• #set_backtrace(array) ⇒ Object
• #set_option(opt, eq) ⇒ Object

Constructor Details

#initialize(*args) ⇒ ParseError

Returns a new instance of ParseError.

# File 'lib/optparse.rb', line 1755

def initialize(*args)
  @args = args
  @reason = nil
end

Instance Attribute Details

#args ⇒ Object (readonly)

Returns the value of attribute args

# File 'lib/optparse.rb', line 1760

def args
  @args
end

#reason ⇒ Object

Returns error reason. Override this for I18N.

# File 'lib/optparse.rb', line 1794

def reason
  @reason || self.class::Reason
end

Class Method Details

.filter_backtrace(array) ⇒ Object

# File 'lib/optparse.rb', line 1771

def self.filter_backtrace(array)
  unless $DEBUG
    array.delete_if(&%r"\A#{Regexp.quote(__FILE__)}:"o.method(:=~))
  end
  array
end

Instance Method Details

#inspect ⇒ Object

# File 'lib/optparse.rb', line 1798

def inspect
  "#<#{self.class.to_s}: #{args.join(' ')}>"
end

#message ⇒ Object Also known as: to_s

Default stringizing method to emit standard error message.

# File 'lib/optparse.rb', line 1805

def message
  reason + ': ' + args.join(' ')
end

#recover(argv) ⇒ Object

Pushes back erred argument(s) to argv.

# File 'lib/optparse.rb', line 1766

def recover(argv)
  argv[0, 0] = @args
  argv
end

#set_backtrace(array) ⇒ Object

# File 'lib/optparse.rb', line 1778

def set_backtrace(array)
  super(self.class.filter_backtrace(array))
end

#set_option(opt, eq) ⇒ Object

# File 'lib/optparse.rb', line 1782

def set_option(opt, eq)
  if eq
    @args[0] = opt
  else
    @args.unshift(opt)
  end
  self
end