class RuboCop::Cop::Layout::FirstMethodArgumentLineBreak

Checks for a line break before the first argument in a multi-line method call.

@example

# bad
method(foo, bar,
  baz)

# good
method(
  foo, bar,
  baz)

  # ignored
  method foo, bar,
    baz

@example AllowMultilineFinalElement: false (default)

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

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

@example AllowMultilineFinalElement: true

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

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

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

@example AllowedMethods: [‘some_method’]

# good
some_method(foo, bar,
  baz)

Constants

MSG

Public Instance Methods

on_csend(node)
Alias for: on_send
on_send(node) click to toggle source
# File lib/rubocop/cop/layout/first_method_argument_line_break.rb, line 78
def on_send(node)
  return if allowed_method?(node.method_name)

  args = node.arguments.dup

  # 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.concat(args.pop.children) if last_arg&.hash_type? && !last_arg&.braces?

  check_method_line_break(node, args, ignore_last: ignore_last_element?)
end
Also aliased as: on_csend, on_super
on_super(node)
Alias for: on_send

Private Instance Methods

ignore_last_element?() click to toggle source
# File lib/rubocop/cop/layout/first_method_argument_line_break.rb, line 99
def ignore_last_element?
  !!cop_config['AllowMultilineFinalElement']
end