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 = 
'.rubocop.yml'
XDG_CONFIG = 
'config.yml'
RUBOCOP_HOME = 
File.realpath(File.join(File.dirname(__FILE__), '..', '..'))
DEFAULT_FILE = 
File.join(RUBOCOP_HOME, 'config', 'default.yml')
AUTO_GENERATED_FILE = 
'.rubocop_todo.yml'

Class Attribute Summary collapse

Class Method Summary collapse

Methods included from FileFinder

find_file_upwards, find_files_upwards, root_level=, root_level?

Class Attribute Details

.auto_gen_config ⇒ Object Also known as: auto_gen_config?

Returns the value of attribute auto_gen_config.



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# File 'lib/rubocop/config_loader.rb', line 26

def auto_gen_config
  @auto_gen_config
end

.debug ⇒ Object Also known as: debug?

Returns the value of attribute debug.



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# File 'lib/rubocop/config_loader.rb', line 26

def debug
  @debug
end

.default_configuration ⇒ Object 



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# File 'lib/rubocop/config_loader.rb', line 120

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 26

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 26

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 26

def ignore_parent_exclusion
  @ignore_parent_exclusion
end

.options_config ⇒ Object

Returns the value of attribute options_config.



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# File 'lib/rubocop/config_loader.rb', line 26

def options_config
  @options_config
end

Class Method Details

.add_excludes_from_files(config, config_file) ⇒ Object 



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# File 'lib/rubocop/config_loader.rb', line 108

def add_excludes_from_files(config, config_file)
  found_files = find_files_upwards(DOTFILE, config_file) +
                [find_user_dotfile, find_user_xdg_config].compact

  return if found_files.empty?
  return if PathUtil.relative_path(found_files.last) ==
            PathUtil.relative_path(config_file)

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

.add_inheritance_from_auto_generated_file ⇒ Object 



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# File 'lib/rubocop/config_loader.rb', line 153

def add_inheritance_from_auto_generated_file
  file_string = " #{AUTO_GENERATED_FILE}"

  config_file = options_config || DOTFILE

  if File.exist?(config_file)
    files = Array(load_yaml_configuration(config_file)['inherit_from'])

    return if files.include?(AUTO_GENERATED_FILE)

    files.unshift(AUTO_GENERATED_FILE)
    file_string = "\n  - " + files.join("\n  - ") if files.size > 1
    rubocop_yml_contents = existing_configuration(config_file)
  end

  write_config_file(config_file, file_string, rubocop_yml_contents)

  puts "Added inheritance from `#{AUTO_GENERATED_FILE}` in `#{DOTFILE}`."
end

.add_missing_namespaces(path, hash) ⇒ Object 



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# File 'lib/rubocop/config_loader.rb', line 57

def add_missing_namespaces(path, hash)
  # Using `hash.each_key` will cause the
  # `can't add a new key into hash during iteration` error
  hash_keys = hash.keys
  hash_keys.each do |key|
    q = Cop::Cop.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 34

def clear_options
  @debug = @auto_gen_config = @options_config = 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 81

def configuration_file_for(target_dir)
  find_project_dotfile(target_dir) || find_user_dotfile ||
    find_user_xdg_config || DEFAULT_FILE
end

.configuration_from_file(config_file) ⇒ Object 



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# File 'lib/rubocop/config_loader.rb', line 86

def configuration_from_file(config_file)
  return ConfigLoader.default_configuration if config_file == DEFAULT_FILE

  config = load_file(config_file)
  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).tap do |merged_config|
    unless possible_new_cops?(config)
      warn_on_pending_cops(merged_config.pending_cops)
    end
  end
end

.load_file(file) ⇒ Object 



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# File 'lib/rubocop/config_loader.rb', line 39

def load_file(file)
  path = File.absolute_path(file.is_a?(RemoteConfig) ? file.file : file)

  hash = load_yaml_configuration(path)

  # Resolve requires first in case they define additional cops
  resolver.resolve_requires(path, hash)

  add_missing_namespaces(path, hash)

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

  hash.delete('inherit_from')

  Config.create(hash, path)
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 72

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. If AllCops:DisabledByDefault is true, it changes the Enabled params so that only cops from user configuration are enabled. If AllCops::EnabledByDefault is true, it changes the Enabled params so that only cops explicitly disabled in user configuration are disabled.



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# File 'lib/rubocop/config_loader.rb', line 149

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

.possible_new_cops?(config) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rubocop/config_loader.rb', line 103

def possible_new_cops?(config)
  disable_pending_cops || enable_pending_cops ||
    config.disabled_new_cops? || config.enabled_new_cops?
end

.warn_on_pending_cops(pending_cops) ⇒ Object 



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# File 'lib/rubocop/config_loader.rb', line 127

def warn_on_pending_cops(pending_cops)
  return if pending_cops.empty?

  warn Rainbow('The following cops were added to RuboCop, but are not ' \
               'configured. Please set Enabled to either `true` or ' \
               '`false` in your `.rubocop.yml` file:').yellow

  pending_cops.each do |cop|
    warn Rainbow(
      " - #{cop.name} (#{cop.metadata['VersionAdded']})"
    ).yellow
  end

  warn Rainbow('For more information: https://docs.rubocop.org/en/latest/versioning/').yellow
end