Class: RuboCop::Cop::Layout::FirstArgumentIndentation

Inherits:
Base
  • Object
show all
Extended by:
AutoCorrector
Includes:
Alignment, ConfigurableEnforcedStyle, RangeHelp
Defined in:
lib/rubocop/cop/layout/first_argument_indentation.rb

Overview

This cop checks the indentation of the first argument in a method call. Arguments after the first one are checked by `Layout/ArgumentAlignment`, not by this cop.

For indenting the first parameter of method definitions, check out `Layout/FirstParameterIndentation`.

This cop will respect `Layout/ArgumentAlignment` and will not work when `EnforcedStyle: with_fixed_indentation` is specified for `Layout/ArgumentAlignment`.

Examples:


# bad
some_method(
first_param,
second_param)

foo = some_method(
first_param,
second_param)

foo = some_method(nested_call(
nested_first_param),
second_param)

foo = some_method(
nested_call(
nested_first_param),
second_param)

some_method nested_call(
nested_first_param),
second_param

EnforcedStyle: consistent

# The first argument should always be indented one step more than the
# preceding line.

# good
some_method(
  first_param,
second_param)

foo = some_method(
  first_param,
second_param)

foo = some_method(nested_call(
  nested_first_param),
second_param)

foo = some_method(
  nested_call(
    nested_first_param),
second_param)

some_method nested_call(
  nested_first_param),
second_param

EnforcedStyle: consistent_relative_to_receiver

# The first argument should always be indented one level relative to
# the parent that is receiving the argument

# good
some_method(
  first_param,
second_param)

foo = some_method(
        first_param,
second_param)

foo = some_method(nested_call(
                    nested_first_param),
second_param)

foo = some_method(
        nested_call(
          nested_first_param),
second_param)

some_method nested_call(
              nested_first_param),
second_params

EnforcedStyle: special_for_inner_method_call

# The first argument should normally be indented one step more than
# the preceding line, but if it's a argument for a method call that
# is itself a argument in a method call, then the inner argument
# should be indented relative to the inner method.

# good
some_method(
  first_param,
second_param)

foo = some_method(
  first_param,
second_param)

foo = some_method(nested_call(
                    nested_first_param),
second_param)

foo = some_method(
  nested_call(
    nested_first_param),
second_param)

some_method nested_call(
              nested_first_param),
second_param

EnforcedStyle: special_for_inner_method_call_in_parentheses (default)

# Same as `special_for_inner_method_call` except that the special rule
# only applies if the outer method call encloses its arguments in
# parentheses.

# good
some_method(
  first_param,
second_param)

foo = some_method(
  first_param,
second_param)

foo = some_method(nested_call(
                    nested_first_param),
second_param)

foo = some_method(
  nested_call(
    nested_first_param),
second_param)

some_method nested_call(
  nested_first_param),
second_param

Constant Summary collapse

MSG =
'Indent the first argument one step more than %<base>s.'

Constants inherited from Base

Base::RESTRICT_ON_SEND

Instance Attribute Summary

Attributes inherited from Base

#config, #processed_source

Instance Method Summary collapse

Methods included from AutoCorrector

support_autocorrect?

Methods included from ConfigurableEnforcedStyle

#alternative_style, #alternative_styles, #ambiguous_style_detected, #correct_style_detected, #detected_style, #detected_style=, #no_acceptable_style!, #no_acceptable_style?, #opposite_style_detected, #style, #style_configured?, #style_detected, #style_parameter_name, #supported_styles, #unexpected_style_detected

Methods inherited from Base

#add_global_offense, #add_offense, autocorrect_incompatible_with, badge, #callbacks_needed, callbacks_needed, #config_to_allow_offenses, #config_to_allow_offenses=, #cop_config, #cop_name, cop_name, department, documentation_url, exclude_from_registry, #excluded_file?, #external_dependency_checksum, inherited, #initialize, joining_forces, lint?, match?, #offenses, #on_investigation_end, #on_other_file, #parse, #ready, #relevant_file?, support_autocorrect?, support_multiple_source?, #target_rails_version, #target_ruby_version

Methods included from ExcludeLimit

#exclude_limit

Methods included from AutocorrectLogic

#autocorrect?, #autocorrect_enabled?, #autocorrect_requested?, #correctable?, #disable_uncorrectable?, #safe_autocorrect?

Methods included from IgnoredNode

#ignore_node, #ignored_node?, #part_of_ignored_node?

Methods included from Util

silence_warnings

Constructor Details

This class inherits a constructor from RuboCop::Cop::Base

Instance Method Details

#on_send(node) ⇒ Object Also known as: on_csend


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# File 'lib/rubocop/cop/layout/first_argument_indentation.rb', line 155

def on_send(node)
  return if style != :consistent && enforce_first_argument_with_fixed_indentation?
  return if !node.arguments? || bare_operator?(node) || node.setter_method?

  indent = base_indentation(node) + configured_indentation_width

  check_alignment([node.first_argument], indent)
end