Class: RuboCop::Cop::Style::MultilineMemoization

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

Overview

This cop checks expressions wrapping styles for multiline memoization.

Examples:

EnforcedStyle: keyword (default)

# bad
foo ||= (
  bar
  baz
)

# good
foo ||= begin
  bar
  baz
end

EnforcedStyle: braces

# bad
foo ||= begin
  bar
  baz
end

# good
foo ||= (
  bar
  baz
)

Constant Summary collapse

KEYWORD_MSG =
'Wrap multiline memoization blocks in `begin` and `end`.'
BRACES_MSG =
'Wrap multiline memoization blocks in `(` and `)`.'

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_new_investigation, #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

#message(_node) ⇒ Object


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# File 'lib/rubocop/cop/style/multiline_memoization.rb', line 55

def message(_node)
  style == :braces ? BRACES_MSG : KEYWORD_MSG
end

#on_or_asgn(node) ⇒ Object


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

def on_or_asgn(node)
  _lhs, rhs = *node

  return unless bad_rhs?(rhs)

  add_offense(node.source_range) do |corrector|
    if style == :keyword
      keyword_autocorrect(rhs, corrector)
    else
      corrector.replace(rhs.loc.begin, '(')
      corrector.replace(rhs.loc.end, ')')
    end
  end
end