Class: RuboCop::Cop::Style::MutableConstant

Relationships & Source Files
Namespace Children
Modules: `ShareableConstantValue`
Super Chains via Extension / Inclusion / Inheritance
Class Chain: self, `::RuboCop::Cop::AutoCorrector`, `::RuboCop::Cop::Base`, `::RuboCop::ExcludeLimit`, NodePattern::Macros, RuboCop::AST::Sexp
Instance Chain: self, `::RuboCop::Cop::ConfigurableEnforcedStyle`, `::RuboCop::Cop::FrozenStringLiteral`, `ShareableConstantValue`, `::RuboCop::Cop::Base`, `::RuboCop::Cop::AutocorrectLogic`, `::RuboCop::Cop::IgnoredNode`, `::RuboCop::Util`, RuboCop::AST::Sexp
Inherits:	RuboCop::Cop::Base Object RuboCop::Cop::Base RuboCop::Cop::Style::MutableConstant
Defined in:	lib/rubocop/cop/style/mutable_constant.rb

Overview

Checks whether some constant value isn’t a mutable literal (e.g. array or hash).

When the Recursive option is enabled, mutable literals nested inside arrays and hashes are also frozen, so an offense on the outermost unfrozen literal will autocorrect every nested mutable literal as well. When the outer literal already has .freeze appended, the cop descends into it and reports each outermost unfrozen literal underneath. The option is disabled by default to preserve existing behavior; opt in to get strict nested freezing.

Strict mode can be used to freeze all constants, rather than just literals. Strict mode is considered an experimental feature. It has not been updated with an exhaustive list of all methods that will produce frozen objects so there is a decent chance of getting some false positives. Luckily, there is no harm in freezing an already frozen object.

From Ruby 3.0, this cop honours the magic comment 'shareable_constant_value'. When this magic comment is set to any acceptable value other than none, it will suppress the offenses raised by this cop. It enforces frozen state.

Note	`Regexp` and `Range` literals are frozen objects since Ruby 3.0.

Note	From Ruby 3.0, interpolated strings are not frozen when `# frozen-string-literal: true` is used, so this cop enforces explicit freezing for such strings.

Note	From Ruby 3.0, this cop allows explicit freezing of constants when the `shareable_constant_value` directive is used.

Examples:

EnforcedStyle: literals (default)

# bad
CONST = [1, 2, 3]

# good
CONST = [1, 2, 3].freeze

# good
CONST = <<~TESTING.freeze
  This is a heredoc
TESTING

# good
CONST = Something.new

Recursive: false (default)

# good - only the outer container needs to be frozen
CONST = [{ a: [], b: 'foo' }].freeze

Recursive: true

# bad - nested mutable literals must be frozen too
CONST = [{ a: [], b: 'foo' }].freeze

# good
CONST = [{ a: [].freeze, b: 'foo'.freeze }.freeze].freeze

EnforcedStyle: strict

# bad
CONST = Something.new

# bad
CONST = Struct.new do
  def foo
    puts 1
  end
end

# good
CONST = Something.new.freeze

# good
CONST = Struct.new do
  def foo
    puts 1
  end
end.freeze

# good - {Data.define} declares an immutable value type
CONST = Data.define(:foo, :bar)

# Magic comment - shareable_constant_value: literal

# bad
CONST = [1, 2, 3]

# good
# shareable_constant_value: literal
CONST = [1, 2, 3]

Cop Safety Information:

This cop’s autocorrection is unsafe since any mutations on objects that are made frozen will change from being accepted to raising FrozenError, and will need to be manually refactored.

Constant Summary

MSG =
# File 'lib/rubocop/cop/style/mutable_constant.rb', line 147
```
'Freeze mutable objects assigned to constants.'
```

Class Attribute Summary

`::RuboCop::Cop::AutoCorrector` - Extended

support_autocorrect?

`::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

.autocorrect_incompatible_with

With Recursive: true, .freeze is appended to a nested literal.

`::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 a 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	Reserved for Commissioner.

`::RuboCop::ExcludeLimit` - Extended

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

Instance Attribute Summary

#recursive? ⇒ Boolean readonly private

`::RuboCop::Cop::ConfigurableEnforcedStyle` - Included

#detected_style, #detected_style=, #no_acceptable_style?, #style_configured?

`::RuboCop::Cop::Base` - Inherited

#active_support_extensions_enabled?, #always_autocorrect?, #config, #config_to_allow_offenses, #config_to_allow_offenses=, #contextual_autocorrect?, #disabled_autocorrect?,
#preview?	Whether the user opted in to unstable behavior, with `--preview` or `AllCops: Preview`.
#processed_source, #project_index, #string_literals_frozen_by_default?, #target_satisfies_all_gem_version_requirements?

`::RuboCop::Cop::AutocorrectLogic` - Included

#autocorrect?, #autocorrect_enabled?, #autocorrect_requested?, #autocorrect_with_disable_uncorrectable?, #correctable?, #disable_uncorrectable?, #safe_autocorrect?,
#skipped_unsafe_correction_with_disable_uncorrectable?	Whether a correction exists but is skipped because it is unsafe in a safe autocorrect run, while `--disable-uncorrectable` asks for a todo comment on everything this run cannot correct.
#contextual_autocorrect_held_back?	When LSP is enabled or the `--editor-mode` option is on, it is considered as editing source code, and autocorrection with `AutoCorrect: contextual` will not be performed.

Instance Method Summary

#on_casgn(node)
#autocorrect(corrector, node) private
#correct_splat_expansion(corrector, expr, splat_value) private
#expand_omitted_hash_value(corrector, pair) private
#explicitly_frozen_literal?(node) ⇒ Boolean private
#freezable_nested_literal?(node) ⇒ Boolean private
#freeze_nested_literals(corrector, node) private

Recursively freezes every nested mutable literal inside an array or hash literal.
#frozen_regexp_or_range_literals?(node) ⇒ Boolean private
#immutable_literal?(node) ⇒ Boolean private
#literal_check(value) private
#literal_children(node) private

Returns the child literals of an array or hash node that may themselves need freezing.
#mutable_literal?(value) ⇒ Boolean private
#mutable_nodes(value, &block) private
#mutable_or_unfrozen_range?(value) ⇒ Boolean private
#omitted_hash_value?(node) ⇒ Boolean private
#on_assignment(value) private
#operation_produces_immutable_object?(node) private

Some of these patterns may not actually return an immutable object, but we want to consider them immutable for this cop.
#parenthesized_immutable_value?(value) ⇒ Boolean private
#range_enclosed_in_parentheses?(node) private
#requires_parentheses?(node) ⇒ Boolean private
#shareable_constant_value?(node) ⇒ Boolean private
#splat_value(node) private
#strict_check(value) private
#unparenthesized_method_call?(node) ⇒ Boolean private
#wrap_for_freeze(corrector, node, expr) private

`::RuboCop::Cop::ConfigurableEnforcedStyle` - Included

#alternative_style, #alternative_styles, #ambiguous_style_detected,
#conflicting_styles_detected	Alias for ConfigurableEnforcedStyle#no_acceptable_style!.
#correct_style_detected, #no_acceptable_style!, #opposite_style_detected, #style,
#style_detected	rubocop:disable-next Metrics.
#style_parameter_name, #supported_styles, #unexpected_style_detected,
#unrecognized_style_detected	Alias for ConfigurableEnforcedStyle#no_acceptable_style!.

`::RuboCop::Cop::FrozenStringLiteral` - Included

#frozen_heredoc?, #frozen_string_literal?, #frozen_string_literal_comment_exists?, #frozen_string_literal_specified?, #frozen_string_literals_disabled?, #frozen_string_literals_enabled?, #leading_comment_lines, #leading_magic_comments, #uninterpolated_heredoc?, #uninterpolated_string?

`ShareableConstantValue` - Included

#magic_comment_in_scope	Identifies the most recent magic comment with valid shareable constant values that’s in scope for this node.
#processed_source_till_node, #recent_shareable_value?, #shareable_constant_value_enabled?

`::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	— grouped under the Commissioner heading above.
#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_gem_version	Returns the version of a gem in the target, by default its locked version (i.e. from Gemfile.lock or gems.locked).
#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, #covering_disabled_range, #current_corrector,
#current_offense_locations	Reserved for Commissioner:
#current_offenses, #currently_disabled_lines, #custom_severity, #default_severity, #disable_uncorrectable, #enabled_line?,
#enabled_lines?	A multi-line offense is suppressed by a directive on any line of its range, not only its first line, matching the intuition that the directive is attached to the offending code.
#file_name_matches_any?, #find_message, #find_severity, #matches_absolute_include_pattern?, #new_offense, #range_for_original, #range_from_node_or_range,
#reset_investigation	Actually private methods.
#suppression_reason	The `--` reason on the directive that suppresses offenses on this range, or `nil` when the directive carries none.
#use_corrector

`::RuboCop::Cop::AutocorrectLogic` - Included

#disable_offense, #disable_offense_at_end_of_line, #disable_offense_before_and_after, #disable_offense_with_eol_or_surround_comment, #eol_comment, #eol_comment_would_be_inside_literal?, #heredoc_range, #line_with_eol_comment_too_long?, #max_line_length, #multiline_ranges, #multiline_string?,
#range_by_lines	Expand the given range to include all of any lines it covers.
#range_of_first_line, #string_continuation?, #surrounding_heredoc?, #surrounding_percent_array?

`::RuboCop::Cop::IgnoredNode` - Included

#ignore_node, #ignored_node?, #part_of_ignored_node?, #ignored_nodes

Constructor Details

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

Class Method Details

.autocorrect_incompatible_with

With Recursive: true, .freeze is appended to a nested literal. When the literal is the last element and spans multiple lines, the trailing comma lands between the literal and the .freeze appended in the same pass.

[ GitHub ]

# File 'lib/rubocop/cop/style/mutable_constant.rb', line 152


def self.autocorrect_incompatible_with
  [Style::HashAsLastArrayItem, Style::TrailingCommaInArrayLiteral, Style::TrailingCommaInHashLiteral]
end

Instance Attribute Details

#recursive? ⇒ `Boolean` (readonly, private)

[ GitHub ]

# File 'lib/rubocop/cop/style/mutable_constant.rb', line 303


def recursive?
  cop_config.fetch('Recursive', false)
end

Instance Method Details

#autocorrect(corrector, node) (private)

[ GitHub ]

# File 'lib/rubocop/cop/style/mutable_constant.rb', line 221


def autocorrect(corrector, node)
  expr = node.source_range

  splat_value = splat_value(node)
  if splat_value
    correct_splat_expansion(corrector, expr, splat_value)
    corrector.insert_after(expr, '.freeze')
    return
  end

  return expand_omitted_hash_value(corrector, node.parent) if omitted_hash_value?(node)

  wrap_for_freeze(corrector, node, expr)
  corrector.insert_after(expr, '.freeze')

  freeze_nested_literals(corrector, node) if recursive?
end

#correct_splat_expansion(corrector, expr, splat_value) (private)

[ GitHub ]

# File 'lib/rubocop/cop/style/mutable_constant.rb', line 349


def correct_splat_expansion(corrector, expr, splat_value)
  if range_enclosed_in_parentheses?(splat_value)
    corrector.replace(expr, "#{splat_value.source}.to_a")
  else
    corrector.replace(expr, "(#{splat_value.source}).to_a")
  end
end

#expand_omitted_hash_value(corrector, pair) (private)

[ GitHub ]

# File 'lib/rubocop/cop/style/mutable_constant.rb', line 243


def expand_omitted_hash_value(corrector, pair)
  key = pair.key.value

  corrector.replace(pair, "#{key}: #{key}.freeze")
end

#explicitly_frozen_literal?(node) ⇒ `Boolean` (private)

[ GitHub ]

# File 'lib/rubocop/cop/style/mutable_constant.rb', line 297


def explicitly_frozen_literal?(node)
  return false unless node.send_type? && node.method?(:freeze)

  node.receiver && mutable_literal?(node.receiver)
end

#freezable_nested_literal?(node) ⇒ `Boolean` (private)

[ GitHub ]

# File 'lib/rubocop/cop/style/mutable_constant.rb', line 272


def freezable_nested_literal?(node)
  return false if frozen_string_literal?(node)
  return false if shareable_constant_value?(node)

  mutable_literal?(node)
end

#freeze_nested_literals(corrector, node) (private)

Recursively freezes every nested mutable literal inside an array or hash literal. Already-frozen subtrees are not re-frozen, but their children are still inspected for unfrozen literals deeper down.

[ GitHub ]

# File 'lib/rubocop/cop/style/mutable_constant.rb', line 262


def freeze_nested_literals(corrector, node)
  literal_children(node).each do |child|
    if explicitly_frozen_literal?(child)
      freeze_nested_literals(corrector, child.receiver)
    elsif freezable_nested_literal?(child)
      autocorrect(corrector, child)
    end
  end
end

#frozen_regexp_or_range_literals?(node) ⇒ `Boolean` (private)

[ GitHub ]

# File 'lib/rubocop/cop/style/mutable_constant.rb', line 331


def frozen_regexp_or_range_literals?(node)
  target_ruby_version >= 3.0 && node.type?(:regexp, :range)
end

#immutable_literal?(node) ⇒ `Boolean` (private)

[ GitHub ]

# File 'lib/rubocop/cop/style/mutable_constant.rb', line 313


def immutable_literal?(node)
  frozen_regexp_or_range_literals?(node) || node.immutable_literal?
end

#literal_check(value) (private)

[ GitHub ]

# File 'lib/rubocop/cop/style/mutable_constant.rb', line 208


def literal_check(value)
  return unless mutable_or_unfrozen_range?(value)
  return if frozen_string_literal?(value)
  return if shareable_constant_value?(value)

  true
end

#literal_children(node) (private)

Returns the child literals of an array or hash node that may themselves need freezing. For hashes, both keys and values are included. Percent-literal arrays (e.g. %w(a b)) are skipped because .freeze cannot be appended to their contents. Splat elements are skipped because the splatted object is not stored in the array.

[ GitHub ]

# File 'lib/rubocop/cop/style/mutable_constant.rb', line 284


def literal_children(node)
  case node.type
  when :array
    return [] if node.percent_literal?

    node.children.reject(&:splat_type?)
  when :hash
    node.children.flat_map { |child| child.pair_type? ? child.children : [] }
  else
    []
  end
end

#mutable_literal?(value) ⇒ `Boolean` (private)

[ GitHub ]

# File 'lib/rubocop/cop/style/mutable_constant.rb', line 307


def mutable_literal?(value)
  return false if frozen_regexp_or_range_literals?(value)

  value.mutable_literal?
end

#mutable_nodes(value, &block) (private)

[ GitHub ]

# File 'lib/rubocop/cop/style/mutable_constant.rb', line 183


def mutable_nodes(value, &block)
  if recursive? && explicitly_frozen_literal?(value)
    literal_children(value.receiver).flat_map { |c| mutable_nodes(c, &block) }
  else
    node_offending = yield(value)

    if node_offending
      [value]
    else
      []
    end
  end
end

#mutable_or_unfrozen_range?(value) ⇒ `Boolean` (private)

[ GitHub ]

# File 'lib/rubocop/cop/style/mutable_constant.rb', line 216


def mutable_or_unfrozen_range?(value)
  mutable_literal?(value) ||
    (target_ruby_version <= 2.7 && range_enclosed_in_parentheses?(value))
end

#omitted_hash_value?(node) ⇒ `Boolean` (private)

[ GitHub ]

# File 'lib/rubocop/cop/style/mutable_constant.rb', line 239


def omitted_hash_value?(node)
  node.parent&.pair_type? && node.parent.value_omission?
end

#on_assignment(value) (private)

[ GitHub ]

# File 'lib/rubocop/cop/style/mutable_constant.rb', line 169


def on_assignment(value)
  nodes = mutable_nodes(value) do |node|
    if style == :strict
      strict_check(node)
    else
      literal_check(node)
    end
  end

  nodes.each do |node|
    add_offense(node) { |corrector| autocorrect(corrector, node) }
  end
end

#on_casgn(node)

[ GitHub ]

# File 'lib/rubocop/cop/style/mutable_constant.rb', line 156


def on_casgn(node)
  if node.expression.nil? # This is only the case for `CONST += ...` or similar
    parent = node.parent
    return unless parent.or_asgn_type? # We only care about `CONST ||= ...`

    on_assignment(parent.children.last)
  else
    on_assignment(node.expression)
  end
end

#operation_produces_immutable_object?(node) (private)

Some of these patterns may not actually return an immutable object, but we want to consider them immutable for this cop.

[ GitHub ]

# File 'lib/rubocop/cop/style/mutable_constant.rb', line 365


def_node_matcher :operation_produces_immutable_object?, <<~PATTERN
  {
    (const _ _)
    (send (const {nil? cbase} :Struct) :new ...)
    (block (send (const {nil? cbase} :Struct) :new ...) ...)
    (send (const {nil? cbase} :Data) :define ...)
    (block (send (const {nil? cbase} :Data) :define ...) ...)
    (send _ :freeze)
    (send {float int} {:+ :- :* :** :/ :% :<<} _)
    (send _ {:+ :- :* :** :/ :%} {float int})
    (send _ {:== :=== :!= :<= :>= :< :>} _)
    (send (const {nil? cbase} :ENV) :[] _)
    (or (send (const {nil? cbase} :ENV) :[] _) _)
    (send _ {:count :length :size} ...)
    (block (send _ {:count :length :size} ...) ...)
  }
PATTERN

#parenthesized_immutable_value?(value) ⇒ `Boolean` (private)

[ GitHub ]

# File 'lib/rubocop/cop/style/mutable_constant.rb', line 323


def parenthesized_immutable_value?(value)
  return false if !value.begin_type? || !value.children.one?

  inner = value.children.first

  !inner.assignment? && !strict_check(inner)
end

#range_enclosed_in_parentheses?(node) (private)

[ GitHub ]

# File 'lib/rubocop/cop/style/mutable_constant.rb', line 384


def_node_matcher :range_enclosed_in_parentheses?, <<~PATTERN
  (begin (range _ _))
PATTERN

#requires_parentheses?(node) ⇒ `Boolean` (private)

[ GitHub ]

# File 'lib/rubocop/cop/style/mutable_constant.rb', line 335


def requires_parentheses?(node)
  if node.range_type? || node.operator_keyword? || unparenthesized_method_call?(node)
    return true
  end

  node.if_type? && node.ternary?
end

#shareable_constant_value?(node) ⇒ `Boolean` (private)

[ GitHub ]

# File 'lib/rubocop/cop/style/mutable_constant.rb', line 317


def shareable_constant_value?(node)
  return false if target_ruby_version < 3.0

  recent_shareable_value? node
end

#splat_value(node) (private)

[ GitHub ]

# File 'lib/rubocop/cop/style/mutable_constant.rb', line 358


def_node_matcher :splat_value, <<~PATTERN
  (array (splat $_))
PATTERN

#strict_check(value) (private)

[ GitHub ]

# File 'lib/rubocop/cop/style/mutable_constant.rb', line 197


def strict_check(value)
  return if value.assignment?
  return if immutable_literal?(value)
  return if operation_produces_immutable_object?(value)
  return if frozen_string_literal?(value)
  return if shareable_constant_value?(value)
  return if parenthesized_immutable_value?(value)

  true
end

#unparenthesized_method_call?(node) ⇒ `Boolean` (private)

[ GitHub ]

# File 'lib/rubocop/cop/style/mutable_constant.rb', line 343


def unparenthesized_method_call?(node)
  return false unless node.call_type?

  node.loc.dot.nil? || (node.arguments.any? && !node.parenthesized?)
end

#wrap_for_freeze(corrector, node, expr) (private)

[ GitHub ]

# File 'lib/rubocop/cop/style/mutable_constant.rb', line 249


def wrap_for_freeze(corrector, node, expr)
  if node.array_type? && !node.bracketed?
    corrector.wrap(expr, '[', ']')
  elsif node.hash_type? && !node.braces?
    corrector.wrap(expr, '{ ', ' }')
  elsif requires_parentheses?(node)
    corrector.wrap(expr, '(', ')')
  end
end

Class: RuboCop::Cop::Style::MutableConstant

Overview

Constant Summary

::RuboCop::Cop::Base - Inherited

::RuboCop::Cop::FrozenStringLiteral - Included

::RuboCop::Cop::ConfigurableEnforcedStyle - Included

Class Attribute Summary

::RuboCop::Cop::AutoCorrector - Extended

::RuboCop::Cop::Base - Inherited

Class Method Summary

::RuboCop::Cop::Base - Inherited

::RuboCop::ExcludeLimit - Extended

Instance Attribute Summary

::RuboCop::Cop::ConfigurableEnforcedStyle - Included

::RuboCop::Cop::Base - Inherited

::RuboCop::Cop::AutocorrectLogic - Included

Instance Method Summary

::RuboCop::Cop::ConfigurableEnforcedStyle - Included

::RuboCop::Cop::FrozenStringLiteral - Included

ShareableConstantValue - Included

::RuboCop::Cop::Base - Inherited

::RuboCop::Cop::AutocorrectLogic - Included

::RuboCop::Cop::IgnoredNode - Included

Constructor Details

Class Method Details

.autocorrect_incompatible_with

Instance Attribute Details

#recursive? ⇒ Boolean (readonly, private)

Instance Method Details

#autocorrect(corrector, node) (private)

#correct_splat_expansion(corrector, expr, splat_value) (private)

#expand_omitted_hash_value(corrector, pair) (private)

#explicitly_frozen_literal?(node) ⇒ Boolean (private)

#freezable_nested_literal?(node) ⇒ Boolean (private)

#freeze_nested_literals(corrector, node) (private)

#frozen_regexp_or_range_literals?(node) ⇒ Boolean (private)

#immutable_literal?(node) ⇒ Boolean (private)

#literal_check(value) (private)

#literal_children(node) (private)

#mutable_literal?(value) ⇒ Boolean (private)

#mutable_nodes(value, &block) (private)

#mutable_or_unfrozen_range?(value) ⇒ Boolean (private)

#omitted_hash_value?(node) ⇒ Boolean (private)

#on_assignment(value) (private)

#on_casgn(node)

#operation_produces_immutable_object?(node) (private)

#parenthesized_immutable_value?(value) ⇒ Boolean (private)

#range_enclosed_in_parentheses?(node) (private)

#requires_parentheses?(node) ⇒ Boolean (private)

#shareable_constant_value?(node) ⇒ Boolean (private)

#splat_value(node) (private)

#strict_check(value) (private)

#unparenthesized_method_call?(node) ⇒ Boolean (private)

#wrap_for_freeze(corrector, node, expr) (private)

`::RuboCop::Cop::Base` - Inherited

`::RuboCop::Cop::FrozenStringLiteral` - Included

`::RuboCop::Cop::ConfigurableEnforcedStyle` - Included

`::RuboCop::Cop::AutoCorrector` - Extended

`::RuboCop::Cop::Base` - Inherited

`::RuboCop::Cop::Base` - Inherited

`::RuboCop::ExcludeLimit` - Extended

`::RuboCop::Cop::ConfigurableEnforcedStyle` - Included

`::RuboCop::Cop::Base` - Inherited

`::RuboCop::Cop::AutocorrectLogic` - Included

`::RuboCop::Cop::ConfigurableEnforcedStyle` - Included

`::RuboCop::Cop::FrozenStringLiteral` - Included

`ShareableConstantValue` - Included

`::RuboCop::Cop::Base` - Inherited

`::RuboCop::Cop::AutocorrectLogic` - Included

`::RuboCop::Cop::IgnoredNode` - Included

#recursive? ⇒ `Boolean` (readonly, private)

#explicitly_frozen_literal?(node) ⇒ `Boolean` (private)

#freezable_nested_literal?(node) ⇒ `Boolean` (private)

#frozen_regexp_or_range_literals?(node) ⇒ `Boolean` (private)

#immutable_literal?(node) ⇒ `Boolean` (private)

#mutable_literal?(value) ⇒ `Boolean` (private)

#mutable_or_unfrozen_range?(value) ⇒ `Boolean` (private)

#omitted_hash_value?(node) ⇒ `Boolean` (private)

#parenthesized_immutable_value?(value) ⇒ `Boolean` (private)

#requires_parentheses?(node) ⇒ `Boolean` (private)

#shareable_constant_value?(node) ⇒ `Boolean` (private)

#unparenthesized_method_call?(node) ⇒ `Boolean` (private)