Class: RuboCop::Cop::Style::RedundantParentheses

Inherits:
Base
  • Object
show all
Extended by:
AutoCorrector
Includes:
Parentheses
Defined in:
lib/rubocop/cop/style/redundant_parentheses.rb

Overview

Checks for redundant parentheses.

Examples:


# bad
(x) if ((y.z).nil?)

# good
x if y.z.nil?

Constant Summary collapse

ALLOWED_NODE_TYPES = 
%i[or send splat kwsplat].freeze

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 inherited from Base

#active_support_extensions_enabled?, #add_global_offense, #add_offense, #always_autocorrect?, autocorrect_incompatible_with, badge, #begin_investigation, #callbacks_needed, callbacks_needed, #config_to_allow_offenses, #config_to_allow_offenses=, #contextual_autocorrect?, #cop_config, #cop_name, cop_name, department, documentation_url, exclude_from_registry, #excluded_file?, #external_dependency_checksum, inherited, #initialize, #inspect, joining_forces, lint?, match?, #message, #offenses, #on_investigation_end, #on_new_investigation, #on_other_file, #parse, #parser_engine, #ready, #relevant_file?, requires_gem, #string_literals_frozen_by_default?, support_autocorrect?, support_multiple_source?, #target_gem_version, #target_rails_version, #target_ruby_version

Methods included from ExcludeLimit

#exclude_limit

Methods included from AutocorrectLogic

#autocorrect?, #autocorrect_enabled?, #autocorrect_requested?, #autocorrect_with_disable_uncorrectable?, #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

#allowed_pin_operator?(node) ⇒ Object

[View source]

34
 
# File 'lib/rubocop/cop/style/redundant_parentheses.rb', line 34

def_node_matcher :allowed_pin_operator?, '^(pin (begin !{lvar ivar cvar gvar}))'

#method_node_and_args(node) ⇒ Object

[View source]

28
 
# File 'lib/rubocop/cop/style/redundant_parentheses.rb', line 28

def_node_matcher :method_node_and_args, '$(call _recv _msg $...)'

#on_begin(node) ⇒ Object

[View source]

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# File 'lib/rubocop/cop/style/redundant_parentheses.rb', line 36

def on_begin(node)
  return if !parentheses?(node) || parens_allowed?(node) || ignore_syntax?(node)

  check(node)
end

#rescue?(node) ⇒ Object

[View source]

31
 
# File 'lib/rubocop/cop/style/redundant_parentheses.rb', line 31

def_node_matcher :rescue?, '{^resbody ^^resbody}'

#square_brackets?(node) ⇒ Object

[View source]

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# File 'lib/rubocop/cop/style/redundant_parentheses.rb', line 23

def_node_matcher :square_brackets?, <<~PATTERN
  (send `{(send _recv _msg) str array hash const #variable?} :[] ...)
PATTERN