Class: RuboCop::Config

Inherits:
Object
  • Object
show all
Extended by:
SimpleForwardable
Includes:
FileFinder, PathUtil
Defined in:
lib/rubocop/config.rb

Overview

This class represents the configuration of the RuboCop application and all its cops. A Config is associated with a YAML configuration file from which it was read. Several different Configs can be used during a run of the rubocop program, if files in several directories are inspected.

Defined Under Namespace

Classes: CopConfig

Constant Summary collapse

EMPTY_CONFIG = 
{}.freeze
DEFAULT_RAILS_VERSION = 
5.0

Constants included from PathUtil

PathUtil::HIDDEN_FILE_PATTERN

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods included from FileFinder

#find_file_upwards, #find_last_file_upwards, #traverse_directories_upwards

Methods included from PathUtil

absolute?, glob?, hidden_dir?, hidden_file?, hidden_file_in_not_hidden_dir?, match_path?, maybe_hidden_file?, pwd, relative_path, remote_file?, reset_pwd, smart_path

Constructor Details

#initialize(hash = RuboCop::ConfigLoader.default_configuration, loaded_path = nil) ⇒ Config

rubocop:disable-next Metrics/AbcSize, Metrics/MethodLength



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# File 'lib/rubocop/config.rb', line 31

def initialize(hash = RuboCop::ConfigLoader.default_configuration, loaded_path = nil)
  @loaded_path = loaded_path
  @for_cop = Hash.new do |h, cop|
    cop_name = cop.respond_to?(:cop_name) ? cop.cop_name : cop

    if ConfigObsoletion.deprecated_cop_name?(cop)
      # Since a deprecated cop will no longer have a qualified name (as the badge is no
      # longer valid), and since we do not want to automatically enable the cop, we just
      # set the configuration to an empty hash if it is unset.
      # This is necessary to allow a renamed cop have its old configuration merged in
      # before being used (which is necessary to allow it to be disabled via config).
      cop_options = self[cop_name].dup || {}
    else
      qualified_cop_name = Cop::Registry.qualified_cop_name(cop_name, loaded_path, warn: false)
      cop_options = self[qualified_cop_name].dup || {}
      cop_options['Enabled'] = enable_cop?(qualified_cop_name, cop_options)

      # If the cop has deprecated names (ie. it has been renamed), it is possible that
      # users will still have old configuration for the cop's old name. In this case,
      # if `ConfigObsoletion` is configured to warn rather than error (and therefore
      # RuboCop runs), we want to respect the old configuration, so merge it in.
      #
      # NOTE: If there is configuration for both the cop and a deprecated names, the old
      # configuration will be merged on top of the new configuration!
      ConfigObsoletion.deprecated_names_for(cop).each do |deprecated_cop_name|
        deprecated_config = @for_cop[deprecated_cop_name]
        next if deprecated_config.empty?

        warn Rainbow(<<~WARNING).yellow
          Warning: Using `#{deprecated_cop_name}` configuration in #{loaded_path} for `#{cop}`.
        WARNING

        cop_options.merge!(@for_cop[deprecated_cop_name])
      end
    end

    h[cop] = h[cop_name] = cop_options
  end
  @hash = hash
  @validator = ConfigValidator.new(self)

  @badge_config_cache = {}.compare_by_identity
  @clusivity_config_exists_cache = {}
end

Instance Attribute Details

#loaded_path ⇒ Object (readonly)

Returns the value of attribute loaded_path.



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# File 'lib/rubocop/config.rb', line 21

def loaded_path
  @loaded_path
end

Class Method Details

.create(hash, path, check: true) ⇒ Object 



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# File 'lib/rubocop/config.rb', line 23

def self.create(hash, path, check: true)
  config = new(hash, path)
  config.check if check

  config
end

Instance Method Details

#active_support_extensions_enabled? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rubocop/config.rb', line 229

def active_support_extensions_enabled?
  for_all_cops['ActiveSupportExtensionsEnabled']
end

#add_excludes_from_higher_level(highest_config) ⇒ Object 



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# File 'lib/rubocop/config.rb', line 126

def add_excludes_from_higher_level(highest_config)
  return unless highest_config.for_all_cops['Exclude']

  excludes = for_all_cops['Exclude'] ||= []
  highest_config.for_all_cops['Exclude'].each do |path|
    unless path.is_a?(Regexp) || absolute?(path)
      path = File.join(File.dirname(highest_config.loaded_path), path)
    end
    excludes << path unless excludes.include?(path)
  end
end

#allowed_camel_case_file?(file) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rubocop/config.rb', line 257

def allowed_camel_case_file?(file)
  # Gemspecs are allowed to have dashes because that fits with bundler best
  # practices in the case when the gem is nested under a namespace (e.g.,
  # `bundler-console` conveys `Bundler::Console`).
  return true if File.extname(file) == '.gemspec'

  file_to_include?(file) { |pattern| /[A-Z]/.match?(pattern.to_s) }
end

#base_dir_for_path_parameters ⇒ Object

Paths specified in configuration files starting with .rubocop are relative to the directory where that file is. Paths in other config files are relative to the current directory. This is so that paths in config/default.yml, for example, are not relative to RuboCop's config directory since that wouldn't work.



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# File 'lib/rubocop/config.rb', line 298

def base_dir_for_path_parameters
  @base_dir_for_path_parameters ||=
    if loaded_path && File.basename(loaded_path).start_with?('.rubocop') &&
       loaded_path != File.join(Dir.home, ConfigLoader::DOTFILE)
      File.expand_path(File.dirname(loaded_path))
    else
      PathUtil.pwd
    end
end

#bundler_lock_file_path ⇒ String?

Returns:



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# File 'lib/rubocop/config.rb', line 328

def bundler_lock_file_path
  return nil unless loaded_path

  base_path = base_dir_for_path_parameters
  ['Gemfile.lock', 'gems.locked'].each do |file_name|
    path = find_file_upwards(file_name, base_path)
    return path if path
  end
  nil
end

#check ⇒ Object 



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# File 'lib/rubocop/config.rb', line 84

def check
  deprecation_check { |deprecation_message| warn("#{loaded_path} - #{deprecation_message}") }
  @validator.validate
  make_excludes_absolute
  self
end

#clusivity_config_for_badge?(badge) ⇒ Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns whether config for this badge has 'Include' or 'Exclude' keys.

Returns:

  • (Boolean) —

    whether config for this badge has 'Include' or 'Exclude' keys



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# File 'lib/rubocop/config.rb', line 183

def clusivity_config_for_badge?(badge)
  exists = @clusivity_config_exists_cache[badge.to_s]
  return exists unless exists.nil?

  cop_config = for_badge(badge)
  @clusivity_config_exists_cache[badge.to_s] = cop_config['Include'] || cop_config['Exclude']
end

#cop_enabled?(name) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rubocop/config.rb', line 203

def cop_enabled?(name)
  !!for_cop(name)['Enabled']
end

#deprecation_check ⇒ Object 



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# File 'lib/rubocop/config.rb', line 138

def deprecation_check
  %w[Exclude Include].each do |key|
    plural = "#{key}s"
    next unless for_all_cops[plural]

    for_all_cops[key] = for_all_cops[plural] # Stay backwards compatible.
    for_all_cops.delete(plural)
    yield "AllCops/#{plural} was renamed to AllCops/#{key}"
  end
end

#disabled_new_cops? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rubocop/config.rb', line 207

def disabled_new_cops?
  for_all_cops['NewCops'] == 'disable'
end

#enabled_new_cop?(qualified_cop_name) ⇒ Boolean

Whether the given pending cop should be enabled, based on the NewCops setting of its department (if any) or of AllCops. A department may set NewCops to enable, disable, pending, or a version, in which case pending cops added in that version or earlier are enabled.

Returns:

  • (Boolean) 


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# File 'lib/rubocop/config.rb', line 219

def enabled_new_cop?(qualified_cop_name)
  setting = new_cops_setting_for(qualified_cop_name)

  case setting.to_s
  when 'enable' then true
  when '', 'pending', 'disable' then false
  else new_cops_version_covers?(setting, qualified_cop_name)
  end
end

#enabled_new_cops? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rubocop/config.rb', line 211

def enabled_new_cops?
  for_all_cops['NewCops'] == 'enable'
end

#file_to_exclude?(file) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rubocop/config.rb', line 276

def file_to_exclude?(file)
  file = File.expand_path(file)
  patterns_to_exclude.any? { |pattern| match_path?(pattern, file) }
end

#file_to_include?(file) ⇒ Boolean

Returns true if the file matches any include pattern. If a block is given, the block is called to determine if the pattern is relevant (true returned by the block) or should be skipped (false returned).

Returns:

  • (Boolean) 


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# File 'lib/rubocop/config.rb', line 240

def file_to_include?(file)
  relative_file_path = path_relative_to_config(file)

  # Optimization to quickly decide if the given file is hidden (on the top
  # level) and cannot be matched by any pattern.
  is_hidden = relative_file_path.start_with?('.') && !relative_file_path.start_with?('..')
  return false if is_hidden && !possibly_include_hidden?

  absolute_file_path = File.expand_path(file)

  patterns_to_include.any? do |pattern|
    next if block_given? && !yield(pattern)

    match_relative_or_absolute_path?(pattern, relative_file_path, absolute_file_path)
  end
end

#for_all_cops ⇒ Object 



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# File 'lib/rubocop/config.rb', line 199

def for_all_cops
  @for_all_cops ||= self['AllCops'] || {}
end

#for_badge(badge) ⇒ Config

Note: the 'Enabled' attribute is same as that returned by for_cop

Returns:

  • (Config) —

    for the given cop merged with that of its department (if any)



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# File 'lib/rubocop/config.rb', line 165

def for_badge(badge)
  @badge_config_cache[badge] ||= begin
    department_config = self[badge.department_name]
    cop_config = for_cop(badge.to_s)
    if department_config
      merged_config = department_config.merge(cop_config)
      if department_config['Exclude'] && cop_config['Exclude']
        merged_config['Exclude'] = department_config['Exclude'] | cop_config['Exclude']
      end
      merged_config
    else
      cop_config
    end
  end
end

#for_cop(cop) ⇒ Config

Note: the 'Enabled' attribute is calculated according to the department's and 'AllCops' configuration; other attributes are not inherited.

Returns:

  • (Config) —

    for the given cop / cop name.



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# File 'lib/rubocop/config.rb', line 152

def for_cop(cop)
  @for_cop[cop]
end

#for_department(department_name) ⇒ Config

Note: the 'Enabled' attribute will be present only if specified at the department's level

Returns:

  • (Config) —

    for the given department name.



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# File 'lib/rubocop/config.rb', line 194

def for_department(department_name)
  @for_department ||= Hash.new { |h, dept| h[dept] = self[dept] || {} }
  @for_department[department_name.to_s]
end

#for_enabled_cop(cop) ⇒ Config, Hash

If the given cop is enabled, returns its configuration hash. Otherwise, returns an empty hash.

Returns:

  • (Config, Hash) —

    for the given cop / cop name.



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# File 'lib/rubocop/config.rb', line 159

def for_enabled_cop(cop)
  cop_enabled?(cop) ? for_cop(cop) : EMPTY_CONFIG
end

#gem_versions_in_target ⇒ Object

Returns target's locked gem versions (i.e. from Gemfile.lock or gems.locked)



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# File 'lib/rubocop/config.rb', line 354

def gem_versions_in_target
  @gem_versions_in_target ||= read_gem_versions_from_target_lockfile
end

#inspect ⇒ Object

:nodoc:



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# File 'lib/rubocop/config.rb', line 366

def inspect # :nodoc:
  "#<#{self.class.name}:#{object_id} @loaded_path=#{loaded_path}>"
end

#internal? ⇒ Boolean

True if this is a config file that is shipped with RuboCop

Returns:

  • (Boolean) 


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# File 'lib/rubocop/config.rb', line 109

def internal?
  base_config_path = File.expand_path(File.join(ConfigLoader::RUBOCOP_HOME, 'config'))
  File.expand_path(loaded_path).start_with?(base_config_path)
end

#loaded_features ⇒ Object 



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# File 'lib/rubocop/config.rb', line 80

def loaded_features
  @loaded_features ||= ConfigLoader.loaded_features
end

#loaded_plugins ⇒ Object 



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# File 'lib/rubocop/config.rb', line 76

def loaded_plugins
  @loaded_plugins ||= ConfigLoader.loaded_plugins
end

#make_excludes_absolute ⇒ Object 



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# File 'lib/rubocop/config.rb', line 114

def make_excludes_absolute
  each_key do |key|
    dig(key, 'Exclude')&.map! do |exclude_elem|
      if exclude_elem.is_a?(String) && !absolute?(exclude_elem)
        File.expand_path(File.join(base_dir_for_path_parameters, exclude_elem))
      else
        exclude_elem
      end
    end
  end
end

#parser_engine ⇒ Object 



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# File 'lib/rubocop/config.rb', line 308

def parser_engine
  @parser_engine ||= for_all_cops.fetch('ParserEngine', :default).to_sym
end

#path_relative_to_config(path) ⇒ Object 



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# File 'lib/rubocop/config.rb', line 289

def path_relative_to_config(path)
  relative_path(path, base_dir_for_path_parameters)
end

#path_sourced_gems_in_target ⇒ Object

Returns the names of the target's gems that are sourced from a local path (i.e. path: dependencies and the project's own gem when the Gemfile uses gemspec), whose code therefore lives in the project itself.



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# File 'lib/rubocop/config.rb', line 362

def path_sourced_gems_in_target
  @path_sourced_gems_in_target ||= read_path_sourced_gems_from_target_lockfile
end

#patterns_to_exclude ⇒ Object 



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# File 'lib/rubocop/config.rb', line 285

def patterns_to_exclude
  for_all_cops['Exclude'] || []
end

#patterns_to_include ⇒ Object 



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# File 'lib/rubocop/config.rb', line 281

def patterns_to_include
  for_all_cops['Include'] || []
end

#pending_cops ⇒ Object 



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# File 'lib/rubocop/config.rb', line 339

def pending_cops
  keys.each_with_object([]) do |qualified_cop_name, pending_cops|
    department = department_of(qualified_cop_name)
    next if department && department['Enabled'] == false

    cop_metadata = self[qualified_cop_name]
    next unless cop_metadata['Enabled'] == 'pending'
    next if new_cops_covered?(qualified_cop_name)

    pending_cops << CopConfig.new(qualified_cop_name, cop_metadata)
  end
end

#possibly_include_hidden? ⇒ Boolean

Returns true if there's a chance that an Include pattern matches hidden files, false if that's definitely not possible.

Returns:

  • (Boolean) 


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# File 'lib/rubocop/config.rb', line 268

def possibly_include_hidden?
  return @possibly_include_hidden if defined?(@possibly_include_hidden)

  @possibly_include_hidden = patterns_to_include.any? do |s|
    s.is_a?(Regexp) || s.start_with?('.') || s.include?('/.')
  end
end

#signature ⇒ Object 



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# File 'lib/rubocop/config.rb', line 104

def signature
  @signature ||= Digest::SHA1.hexdigest(to_s)
end

#smart_loaded_path ⇒ Object 



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# File 'lib/rubocop/config.rb', line 323

def smart_loaded_path
  PathUtil.smart_path(@loaded_path)
end

#string_literals_frozen_by_default? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rubocop/config.rb', line 233

def string_literals_frozen_by_default?
  for_all_cops['StringLiteralsFrozenByDefault']
end

#target_rails_version ⇒ Object 



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# File 'lib/rubocop/config.rb', line 312

def target_rails_version
  @target_rails_version ||=
    if for_all_cops['TargetRailsVersion']
      for_all_cops['TargetRailsVersion'].to_f
    elsif target_rails_version_from_bundler_lock_file
      target_rails_version_from_bundler_lock_file
    else
      DEFAULT_RAILS_VERSION
    end
end

#to_s ⇒ Object 



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# File 'lib/rubocop/config.rb', line 100

def to_s
  @to_s ||= @hash.to_s
end

#validate_after_resolution ⇒ Object 



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# File 'lib/rubocop/config.rb', line 91

def validate_after_resolution
  @validator.validate_after_resolution
  self
end