class RuboCop::Cop::Style::OptionalArguments
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
Constants
- MSG
Public Instance Methods
on_def(node)
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# File lib/rubocop/cop/style/optional_arguments.rb, line 24 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