Class: RuboCop::ConfigLoader

Inherits:
Object
  • Object
show all
Extended by:
FileFinder
Defined in:
lib/rubocop/config_loader.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

DOTFILE = 
ConfigFinder::DOTFILE
RUBOCOP_HOME = 
File.realpath(File.join(File.dirname(__FILE__), '..', '..'))
DEFAULT_FILE = 
File.join(RUBOCOP_HOME, 'config', 'default.yml')

Class Attribute Summary collapse

Class Method Summary collapse

Methods included from FileFinder

find_file_upwards, find_last_file_upwards, traverse_directories_upwards

Class Attribute Details

.debug ⇒ Object Also known as: debug?

Returns the value of attribute debug.



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# File 'lib/rubocop/config_loader.rb', line 25

def debug
  @debug
end

.default_configuration ⇒ Object 



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# File 'lib/rubocop/config_loader.rb', line 142

def default_configuration
  @default_configuration ||= begin
    print 'Default ' if debug?
    load_file(DEFAULT_FILE)
  end
end

.disable_pending_cops ⇒ Object

Returns the value of attribute disable_pending_cops.



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# File 'lib/rubocop/config_loader.rb', line 25

def disable_pending_cops
  @disable_pending_cops
end

.enable_pending_cops ⇒ Object

Returns the value of attribute enable_pending_cops.



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# File 'lib/rubocop/config_loader.rb', line 25

def enable_pending_cops
  @enable_pending_cops
end

.ignore_parent_exclusion ⇒ Object Also known as: ignore_parent_exclusion?

Returns the value of attribute ignore_parent_exclusion.



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# File 'lib/rubocop/config_loader.rb', line 25

def ignore_parent_exclusion
  @ignore_parent_exclusion
end

.ignore_unrecognized_cops ⇒ Object

Returns the value of attribute ignore_unrecognized_cops.



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# File 'lib/rubocop/config_loader.rb', line 25

def ignore_unrecognized_cops
  @ignore_unrecognized_cops
end

.loaded_features ⇒ Object (readonly)

Returns the value of attribute loaded_features.



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# File 'lib/rubocop/config_loader.rb', line 28

def loaded_features
  @loaded_features
end

.loaded_plugins ⇒ Object (readonly)

Returns the value of attribute loaded_plugins.



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# File 'lib/rubocop/config_loader.rb', line 28

def loaded_plugins
  @loaded_plugins
end

Class Method Details

.add_excludes_from_files(config, config_file) ⇒ Object 



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# File 'lib/rubocop/config_loader.rb', line 132

def add_excludes_from_files(config, config_file)
  exclusion_file = find_last_file_upwards(DOTFILE, config_file, ConfigFinder.project_root)

  return unless exclusion_file
  return if PathUtil.relative_path(exclusion_file) == PathUtil.relative_path(config_file)

  print 'AllCops/Exclude ' if debug?
  config.add_excludes_from_higher_level(load_file(exclusion_file))
end

.add_loaded_features(loaded_features) ⇒ Object

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.

Used to add features that were required inside a config or from the CLI using ‘–require`.



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# File 'lib/rubocop/config_loader.rb', line 206

def add_loaded_features(loaded_features)
  @loaded_features.merge(Array(loaded_features))
end

.add_loaded_plugins(loaded_plugins) ⇒ Object

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.

Used to add plugins that were required inside a config or from the CLI using ‘–plugin`.



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

def add_loaded_plugins(loaded_plugins)
  @loaded_plugins.merge(Array(loaded_plugins))
end

.add_missing_namespaces(path, hash) ⇒ Object 



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# File 'lib/rubocop/config_loader.rb', line 85

def add_missing_namespaces(path, hash)
  # Using `hash.each_key` will cause the
  # `can't add a new key into hash during iteration` error
  obsoletion = ConfigObsoletion.new(hash)

  hash_keys = hash.keys
  hash_keys.each do |key|
    next if obsoletion.deprecated_cop_name?(key)

    q = Cop::Registry.qualified_cop_name(key, path)
    next if q == key

    hash[q] = hash.delete(key)
  end
end

.clear_options ⇒ Object 



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# File 'lib/rubocop/config_loader.rb', line 33

def clear_options
  @debug = nil
  @loaded_plugins = Set.new
  @loaded_features = Set.new
  @disable_pending_cops = nil
  @enable_pending_cops = nil
  @ignore_parent_exclusion = nil
  @ignore_unrecognized_cops = nil
  FileFinder.root_level = nil
end

.configuration_file_for(target_dir) ⇒ Object

Returns the path of .rubocop.yml searching upwards in the directory structure starting at the given directory where the inspected file is. If no .rubocop.yml is found there, the user’s home directory is checked. If there’s no .rubocop.yml there either, the path to the default file is returned.



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# File 'lib/rubocop/config_loader.rb', line 113

def configuration_file_for(target_dir)
  ConfigFinder.find_config_path(target_dir)
end

.configuration_from_file(config_file, check: true) ⇒ Object 



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# File 'lib/rubocop/config_loader.rb', line 117

def configuration_from_file(config_file, check: true)
  return default_configuration if config_file == DEFAULT_FILE

  config = load_file(config_file, check: check)
  config.validate_after_resolution if check

  if ignore_parent_exclusion?
    print 'Ignoring AllCops/Exclude from parent folders' if debug?
  else
    add_excludes_from_files(config, config_file)
  end

  merge_with_default(config, config_file)
end

.inject_defaults!(config_yml_path) ⇒ Object

This API is primarily intended for testing and documenting plugins. When testing a plugin using ‘rubocop/rspec/support`, the plugin is loaded automatically, so this API is usually not needed. It is intended to be used only when implementing tests that do not use `rubocop/rspec/support`. rubocop:disable Metrics/MethodLength



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# File 'lib/rubocop/config_loader.rb', line 154

def inject_defaults!(config_yml_path)
  if Pathname(config_yml_path).directory?
    # TODO: Since the warning noise is expected to be high until some time after the release,
    # warnings will only be issued when `RUBYOPT=-w` is specified.
    # To proceed step by step, the next step is to remove `$VERBOSE` and always issue warning.
    # Eventually, `project_root` will no longer be accepted.
    if $VERBOSE
      warn Rainbow(<<~MESSAGE).yellow, uplevel: 1
        Use config YAML file path instead of project root directory.
        e.g., `path/to/config/default.yml`
      MESSAGE
    end
    # NOTE: For compatibility.
    project_root = config_yml_path
    path = File.join(project_root, 'config', 'default.yml')
    config = load_file(path)
  else
    hash = ConfigLoader.load_yaml_configuration(config_yml_path.to_s)
    config = Config.new(hash, config_yml_path).tap(&:make_excludes_absolute)
  end

  @default_configuration = ConfigLoader.merge_with_default(config, path)
end

.load_file(file, check: true) ⇒ Object

rubocop:disable Metrics/AbcSize



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# File 'lib/rubocop/config_loader.rb', line 45

def load_file(file, check: true)
  path = file_path(file)

  hash = load_yaml_configuration(path)

  rubocop_config = Config.create(hash, path, check: false)
  plugins = hash.delete('plugins')
  loaded_plugins = resolver.resolve_plugins(rubocop_config, plugins)
  add_loaded_plugins(loaded_plugins)

  loaded_features = resolver.resolve_requires(path, hash)
  add_loaded_features(loaded_features)

  resolver.resolve_inheritance_from_gems(hash)
  resolver.resolve_inheritance(path, hash, file, debug?)
  hash.delete('inherit_from')

  # Adding missing namespaces only after resolving requires & inheritance,
  # since both can introduce new cops that need to be considered here.
  add_missing_namespaces(path, hash)

  Config.create(hash, path, check: check)
end

.load_yaml_configuration(absolute_path) ⇒ Object

rubocop:enable Metrics/AbcSize



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

def load_yaml_configuration(absolute_path)
  file_contents = read_file(absolute_path)
  yaml_code = Dir.chdir(File.dirname(absolute_path)) { ERB.new(file_contents).result }
  yaml_tree = check_duplication(yaml_code, absolute_path)
  hash = yaml_tree_to_hash(yaml_tree) || {}

  puts "configuration from #{absolute_path}" if debug?

  unless hash.is_a?(Hash)
    raise(ValidationError, "Malformed configuration in #{absolute_path}")
  end

  hash
end

.merge(base_hash, derived_hash) ⇒ Object

Return a recursive merge of two hashes. That is, a normal hash merge, with the addition that any value that is a hash, and occurs in both arguments, will also be merged. And so on.



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

def merge(base_hash, derived_hash)
  resolver.merge(base_hash, derived_hash)
end

.merge_with_default(config, config_file, unset_nil: true) ⇒ Object

Merges the given configuration with the default one.



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# File 'lib/rubocop/config_loader.rb', line 192

def merge_with_default(config, config_file, unset_nil: true)
  resolver.merge_with_default(config, config_file, unset_nil: unset_nil)
end

.project_root ⇒ Object

Deprecated.

Use ‘RuboCop::ConfigFinder.project_root` instead.

Returns the path RuboCop inferred as the root of the project. No file searches will go past this directory.



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# File 'lib/rubocop/config_loader.rb', line 182

def project_root
  warn Rainbow(<<~WARNING).yellow, uplevel: 1
    `RuboCop::ConfigLoader.project_root` is deprecated and will be removed in RuboCop 2.0. \
    Use `RuboCop::ConfigFinder.project_root` instead.
  WARNING

  ConfigFinder.project_root
end