Class: RuboCop::Cop::Style::Dir

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

Overview

This cop checks for places where the `#__dir__` method can replace more complex constructs to retrieve a canonicalized absolute path to the current file.

Examples:

# bad
path = File.expand_path(File.dirname(__FILE__))

# bad
path = File.dirname(File.realpath(__FILE__))

# good
path = __dir__

Constant Summary collapse

MSG =
"Use `__dir__` to get an absolute path to the current file's directory."
RESTRICT_ON_SEND =
%i[expand_path dirname].freeze

Instance Attribute Summary

Attributes inherited from Base

#config, #processed_source

Instance Method Summary collapse

Methods included from AutoCorrector

support_autocorrect?

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

#dir_replacement?(node) ⇒ Object


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# File 'lib/rubocop/cop/style/dir.rb', line 26

def_node_matcher :dir_replacement?, <<~PATTERN
  {(send (const {nil? cbase} :File) :expand_path (send (const {nil? cbase} :File) :dirname  #file_keyword?))
   (send (const {nil? cbase} :File) :dirname     (send (const {nil? cbase} :File) :realpath #file_keyword?))}
PATTERN

#on_send(node) ⇒ Object


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

def on_send(node)
  dir_replacement?(node) do
    add_offense(node) do |corrector|
      corrector.replace(node, '__dir__')
    end
  end
end