class RuboCop::Cop::Layout::MultilineMethodArgumentLineBreaks

Ensures that each argument in a multi-line method call starts on a separate line.

NOTE: This cop does not move the first argument, if you want that to be on a separate line, see ‘Layout/FirstMethodArgumentLineBreak`.

@example

# bad
foo(a, b,
  c
)

# bad
foo(a, b, {
  foo: "bar",
})

# good
foo(
  a,
  b,
  c
)

# good
foo(a, b, c)

@example AllowMultilineFinalElement: false (default)

# good
foo(
  a,
  b,
  {
    foo: "bar",
  }
)

@example AllowMultilineFinalElement: true

# good
foo(
  a,
  b,
  {
    foo: "bar",
  }
)

Constants

MSG

Public Instance Methods

on_send(node) click to toggle source
# File lib/rubocop/cop/layout/multiline_method_argument_line_breaks.rb, line 62
def on_send(node)
  return if node.method?(:[]=)

  args = node.arguments

  # If there is a trailing hash arg without explicit braces, like this:
  #
  #    method(1, 'key1' => value1, 'key2' => value2)
  #
  # ...then each key/value pair is treated as a method 'argument'
  # when determining where line breaks should appear.
  last_arg = args.last
  args = args[0...-1] + last_arg.children if last_arg&.hash_type? && !last_arg&.braces?

  check_line_breaks(node, args, ignore_last: ignore_last_element?)
end

Private Instance Methods

ignore_last_element?() click to toggle source
# File lib/rubocop/cop/layout/multiline_method_argument_line_breaks.rb, line 81
def ignore_last_element?
  !!cop_config['AllowMultilineFinalElement']
end