Class: RuboCop::Cop::Style::EndlessMethod

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

Overview

This cop checks for endless methods.

It can enforce either the use of endless methods definitions for single-lined method bodies, or disallow endless methods.

Other method definition types are not considered by this cop.

The supported styles are:

  • allow_single_line (default) - only single line endless method definitions are allowed.

  • allow_always - all endless method definitions are allowed.

  • disallow - all endless method definitions are disallowed.

NOTE: Incorrect endless method definitions will always be corrected to a multi-line definition.

Examples:

EnforcedStyle: allow_single_line (default)

# good
def my_method() = x

# bad, multi-line endless method
def my_method() = x.foo
                   .bar
                   .baz

EnforcedStyle: allow_always

# good
def my_method() = x

# good
def my_method() = x.foo
                   .bar
                   .baz

EnforcedStyle: disallow

# bad
def my_method; x end

# bad
def my_method() = x.foo
                   .bar
                   .baz

Constant Summary collapse

CORRECTION_STYLES =
%w[multiline single_line].freeze
MSG =
'Avoid endless method definitions.'
MSG_MULTI_LINE =
'Avoid endless method definitions with multiple lines.'

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 TargetRubyVersion

minimum_target_ruby_version, required_minimum_ruby_version, support_target_ruby_version?

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?, #message, #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

#on_def(node) ⇒ Object


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# File 'lib/rubocop/cop/style/endless_method.rb', line 60

def on_def(node)
  if style == :disallow
    handle_disallow_style(node)
  else
    handle_allow_style(node)
  end
end