Class: RuboCop::Config

Inherits:
Hash
  • Object
show all
Includes:
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.

Constant Summary collapse

COMMON_PARAMS =
%w(Exclude Include Severity
AutoCorrect StyleGuide Details).freeze
DEFAULT_RUBY_VERSION =

2.0 is the oldest officially supported Ruby version.

2.0
KNOWN_RUBIES =
[1.9, 2.0, 2.1, 2.2, 2.3].freeze
OBSOLETE_COPS =
{
  'Style/TrailingComma' =>
    'The `Style/TrailingComma` cop no longer exists. Please use ' \
    '`Style/TrailingCommaInLiteral` and/or ' \
    '`Style/TrailingCommaInArguments` instead.',
  'Rails/DefaultScope' =>
    'The `Rails/DefaultScope` cop no longer exists.',
  'Style/SingleSpaceBeforeFirstArg' =>
    'The `Style/SingleSpaceBeforeFirstArg` cop has been renamed to ' \
    '`Style/SpaceBeforeFirstArg. ',
  'Lint/SpaceBeforeFirstArg' =>
    'The `Lint/SpaceBeforeFirstArg` cop has been removed, since it was a ' \
    'duplicate of `Style/SpaceBeforeFirstArg`. Please use ' \
    '`Style/SpaceBeforeFirstArg` instead.',
  'Style/SpaceAfterControlKeyword' =>
    'The `Style/SpaceAfterControlKeyword` cop has been removed. Please ' \
    'use `Style/SpaceAroundKeyword` instead.',
  'Style/SpaceBeforeModifierKeyword' =>
    'The `Style/SpaceBeforeModifierKeyword` cop has been removed. Please ' \
    'use `Style/SpaceAroundKeyword` instead.'
}.freeze

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from PathUtil

absolute?, match_path?, relative_path

Constructor Details

#initialize(hash = {}, loaded_path = nil) ⇒ Config

Returns a new instance of Config.


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# File 'lib/rubocop/config.rb', line 46

def initialize(hash = {}, loaded_path = nil)
  @loaded_path = loaded_path
  @for_cop = Hash.new do |h, cop|
    h[cop] = self[Cop::Cop.qualified_cop_name(cop, loaded_path)] || {}
  end
  replace(hash)
end

Instance Attribute Details

#loaded_pathObject (readonly)

Returns the value of attribute loaded_path


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# File 'lib/rubocop/config.rb', line 44

def loaded_path
  @loaded_path
end

Instance Method Details

#add_excludes_from_higher_level(highest_config) ⇒ Object


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# File 'lib/rubocop/config.rb', line 70

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

#add_missing_namespacesObject


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# File 'lib/rubocop/config.rb', line 111

def add_missing_namespaces
  keys.each do |k|
    q = Cop::Cop.qualified_cop_name(k, loaded_path)
    next if q == k

    self[q] = self[k]
    delete(k)
  end
end

#base_dir_for_path_parametersObject

Paths specified in .rubocop.yml and .rubocop_todo.yml files 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 188

def base_dir_for_path_parameters
  config_files = [ConfigLoader::DOTFILE, ConfigLoader::AUTO_GENERATED_FILE]
  @base_dir_for_path_parameters ||=
    if config_files.include?(File.basename(loaded_path)) &&
       loaded_path != File.join(Dir.home, ConfigLoader::DOTFILE)
      File.expand_path(File.dirname(loaded_path))
    else
      Dir.pwd
    end
end

#cop_enabled?(cop) ⇒ Boolean

Returns:

  • (Boolean)

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# File 'lib/rubocop/config.rb', line 101

def cop_enabled?(cop)
  department = cop.cop_type.to_s.capitalize!

  if (dept_config = self[department])
    return false if dept_config['Enabled'] == false
  end

  for_cop(cop).empty? || for_cop(cop)['Enabled']
end

#deprecation_checkObject


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# File 'lib/rubocop/config.rb', line 82

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

#file_to_exclude?(file) ⇒ Boolean

Returns:

  • (Boolean)

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# File 'lib/rubocop/config.rb', line 164

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

#file_to_include?(file) ⇒ Boolean

Returns:

  • (Boolean)

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# File 'lib/rubocop/config.rb', line 139

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 can not 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|
    match_path?(pattern, relative_file_path) ||
      match_path?(pattern, absolute_file_path)
  end
end

#for_all_copsObject


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# File 'lib/rubocop/config.rb', line 97

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

#for_cop(cop) ⇒ Object


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# File 'lib/rubocop/config.rb', line 93

def for_cop(cop)
  @for_cop[cop.respond_to?(:cop_name) ? cop.cop_name : cop]
end

#make_excludes_absoluteObject


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# File 'lib/rubocop/config.rb', line 54

def make_excludes_absolute
  each_key do |key|
    validate_section_presence(key)
    next unless self[key]['Exclude']

    self[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

#path_relative_to_config(path) ⇒ Object


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# File 'lib/rubocop/config.rb', line 179

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

#patterns_to_excludeObject


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# File 'lib/rubocop/config.rb', line 175

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

#patterns_to_includeObject


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# File 'lib/rubocop/config.rb', line 171

def patterns_to_include
  @patterns_to_include ||= for_all_cops['Include']
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 158

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

#target_ruby_versionObject


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

def target_ruby_version
  @target_ruby_version ||=
    if for_all_cops['TargetRubyVersion']
      @target_ruby_version_source = :rubocop_yml

      for_all_cops['TargetRubyVersion']
    elsif File.file?('.ruby-version') &&
          /\A(ruby-)?(?<version>\d+\.\d+)/ =~ File.read('.ruby-version')

      @target_ruby_version_source = :dot_ruby_version

      version.to_f
    else
      DEFAULT_RUBY_VERSION
    end
end

#validateObject


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# File 'lib/rubocop/config.rb', line 121

def validate
  # Don't validate RuboCop's own files. Avoids infinite recursion.
  base_config_path = File.expand_path(File.join(ConfigLoader::RUBOCOP_HOME,
                                                'config'))
  return if File.expand_path(loaded_path).start_with?(base_config_path)

  valid_cop_names, invalid_cop_names = keys.partition do |key|
    ConfigLoader.default_configuration.key?(key)
  end

  reject_obsolete_cops
  warn_about_unrecognized_cops(invalid_cop_names)
  reject_obsolete_parameters
  check_target_ruby
  validate_parameter_names(valid_cop_names)
  validate_enforced_styles(valid_cop_names)
end