Sha256: 4ae4609949a48e1f842a5e179017d356049b2acc27afc5371ca63284d4cc836c
Contents?: true
Size: 1.33 KB
Versions: 13
Compression:
Stored size: 1.33 KB
Contents
# encoding: utf-8
# frozen_string_literal: true
module RuboCop
module Cop
module Style
# This cop checks for optional arguments to methods
# that do not come at the end of the argument list
#
# @example
# # bad
# def foo(a = 1, b, c)
# end
#
# # good
# def baz(a, b, c = 1)
# end
#
# def foobar(a = 1, b = 2, c = 3)
# end
class OptionalArguments < Cop
MSG = 'Optional arguments should appear at the end ' \
'of the argument list.'.freeze
def on_def(node)
_method, arguments, = *node
arguments = *arguments
optarg_positions = []
arg_positions = []
arguments.each_with_index do |argument, index|
optarg_positions << index if argument.optarg_type?
arg_positions << index if argument.arg_type?
end
return if optarg_positions.empty? || arg_positions.empty?
optarg_positions.each do |optarg_position|
# there can only be one group of optional arguments
break if optarg_position > arg_positions.max
argument = arguments[optarg_position]
arg, = *argument
add_offense(argument, :expression, format(MSG, arg))
end
end
end
end
end
end
Version data entries
13 entries across 13 versions & 2 rubygems