123456789_123456789_123456789_123456789_123456789_

Class: RuboCop::Cop::Style::KeywordParametersOrder

Relationships & Source Files
Super Chains via Extension / Inclusion / Inheritance
Class Chain:
self, ::RuboCop::Cop::AutoCorrector, ::RuboCop::Cop::Base, ::RuboCop::ExcludeLimit, NodePattern::Macros, RuboCop::AST::Sexp
Instance Chain:
Inherits: RuboCop::Cop::Base
Defined in: lib/rubocop/cop/style/keyword_parameters_order.rb

Overview

Enforces that optional keyword parameters are placed at the end of the parameters list.

This improves readability, because when looking through the source, it is expected to find required parameters at the beginning of parameters list and optional parameters at the end.

Examples:

# bad
def some_method(first: false, second:, third: 10)
  # body omitted
end

# good
def some_method(second:, first: false, third: 10)
  # body omitted
end

# bad
do_something do |first: false, second:, third: 10|
  # body omitted
end

# good
do_something do |second:, first: false, third: 10|
  # body omitted
end

Constant Summary

::RuboCop::Cop::Base - Inherited

EMPTY_OFFENSES, RESTRICT_ON_SEND

::RuboCop::Cop::RangeHelp - Included

BYTE_ORDER_MARK, NOT_GIVEN

Class Attribute Summary

::RuboCop::Cop::AutoCorrector - Extended

::RuboCop::Cop::Base - Inherited

.gem_requirements, .lint?,
.support_autocorrect?

Returns if class supports autocorrect.

.support_multiple_source?

Override if your cop should be called repeatedly for multiple investigations Between calls to on_new_investigation and on_investigation_end, the result of processed_source will remain constant.

Class Method Summary

::RuboCop::Cop::Base - Inherited

.autocorrect_incompatible_with

List of cops that should not try to autocorrect at the same time as this cop.

.badge

Naming.

.callbacks_needed, .cop_name, .department,
.documentation_url

Returns an url to view this cops documentation online.

.exclude_from_registry

Call for abstract Cop classes.

.inherited,
.joining_forces

Override and return the Force class(es) you need to join.

.match?

Returns true if the cop name or the cop namespace matches any of the given names.

.new,
.requires_gem

Register a version requirement for the given gem name.

.restrict_on_send

::RuboCop::ExcludeLimit - Extended

exclude_limit

Sets up a configuration option to have an exclude limit tracked.

transform

Instance Attribute Summary

Instance Method Summary

::RuboCop::Cop::RangeHelp - Included

#add_range, #column_offset_between,
#contents_range

A range containing only the contents of a literal with delimiters (e.g.

#directions,
#effective_column

Returns the column attribute of the range, except if the range is on the first line and there’s a byte order mark at the beginning of that line, in which case 1 is subtracted from the column value.

#final_pos, #move_pos, #move_pos_str, #range_between, #range_by_whole_lines, #range_with_comments, #range_with_comments_and_lines, #range_with_surrounding_comma, #range_with_surrounding_space, #source_range

::RuboCop::Cop::Base - Inherited

#add_global_offense

Adds an offense that has no particular location.

#add_offense

Adds an offense on the specified range (or node with an expression) Unless that offense is disabled for this range, a corrector will be yielded to provide the cop the opportunity to autocorrect the offense.

#begin_investigation

Called before any investigation.

#callbacks_needed,
#cop_config

Configuration Helpers.

#cop_name, #excluded_file?,
#external_dependency_checksum

This method should be overridden when a cop’s behavior depends on state that lives outside of these locations:

#inspect
#message

Gets called if no message is specified when calling add_offense or add_global_offense Cops are discouraged to override this; instead pass your message directly.

#name

Alias for Base#cop_name.

#offenses,
#on_investigation_end

Called after all on_…​

#on_new_investigation

Called before all on_…​

#on_other_file

Called instead of all on_…​

#parse

There should be very limited reasons for a Cop to do it’s own parsing.

#parser_engine,
#ready

Called between investigations.

#relevant_file?, #target_rails_version, #target_ruby_version, #annotate, #apply_correction, #attempt_correction,
#callback_argument

Reserved for Cop::Cop.

#complete_investigation

Called to complete an investigation.

#correct, #current_corrector,
#current_offense_locations

Reserved for Commissioner:

#current_offenses, #currently_disabled_lines, #custom_severity, #default_severity, #disable_uncorrectable, #enabled_line?, #file_name_matches_any?, #find_message, #find_severity, #range_for_original, #range_from_node_or_range,
#reset_investigation

Actually private methods.

#use_corrector

::RuboCop::Cop::AutocorrectLogic - Included

::RuboCop::Cop::IgnoredNode - Included

Constructor Details

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

Instance Method Details

#append_newline_to_last_kwoptarg(arguments, corrector) (private)

[ GitHub ]

  
# File 'lib/rubocop/cop/style/keyword_parameters_order.rb', line 58

def append_newline_to_last_kwoptarg(arguments, corrector)
  last_argument = arguments.last
  return if last_argument.kwrestarg_type? || last_argument.blockarg_type?

  last_kwoptarg = arguments.reverse.find(&:kwoptarg_type?)
  corrector.insert_after(last_kwoptarg, "\n") unless arguments.parent.block_type?
end

#on_kwoptarg(node)

[ GitHub ]

  
# File 'lib/rubocop/cop/style/keyword_parameters_order.rb', line 40

def on_kwoptarg(node)
  kwarg_nodes = node.right_siblings.select(&:kwarg_type?)
  return if kwarg_nodes.empty?

  add_offense(node) do |corrector|
    if node.parent.find(&:kwoptarg_type?) == node
      corrector.insert_before(node, "#{kwarg_nodes.map(&:source).join(', ')}, ")

      arguments = node.each_ancestor(:def, :defs, :block).first.arguments
      append_newline_to_last_kwoptarg(arguments, corrector) unless parentheses?(arguments)

      remove_kwargs(kwarg_nodes, corrector)
    end
  end
end

#remove_kwargs(kwarg_nodes, corrector) (private)

[ GitHub ]

  
# File 'lib/rubocop/cop/style/keyword_parameters_order.rb', line 66

def remove_kwargs(kwarg_nodes, corrector)
  kwarg_nodes.each do |kwarg|
    with_space = range_with_surrounding_space(kwarg.source_range)
    corrector.remove(range_with_surrounding_comma(with_space, :left))
  end
end