Class: RuboCop::Config

Inherits:
Object
  • Object
show all
Extended by:
Forwardable
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.

Constant Summary collapse

DEFAULT_RAILS_VERSION = 
5.0

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods included from FileFinder

#find_file_upwards, #find_files_upwards, root_level=, root_level?

Methods included from PathUtil

absolute?, chdir, hidden_dir?, hidden_file_in_not_hidden_dir?, match_path?, pwd, relative_path, reset_pwd, smart_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 19

def initialize(hash = {}, loaded_path = nil)
  @loaded_path = loaded_path
  @for_cop = Hash.new do |h, cop|
    qualified_cop_name = Cop::Cop.qualified_cop_name(cop, loaded_path)
    cop_options = self[qualified_cop_name] || {}
    cop_options['Enabled'] = enable_cop?(qualified_cop_name, cop_options)
    h[cop] = cop_options
  end
  @hash = hash
  @validator = ConfigValidator.new(self)
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 17

def loaded_path
  @loaded_path
end

Class Method Details

.create(hash, path) ⇒ Object 


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

def self.create(hash, path)
  new(hash, path).check
end

Instance Method Details

#add_excludes_from_higher_level(highest_config) ⇒ Object 


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# File 'lib/rubocop/config.rb', line 72

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 124

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) do |pattern, relative_path, absolute_path|
    pattern.to_s =~ /[A-Z]/ &&
      (match_path?(pattern, relative_path) ||
       match_path?(pattern, absolute_path))
  end
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 171

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

#bundler_lock_file_path ⇒ Object 


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# File 'lib/rubocop/config.rb', line 196

def bundler_lock_file_path
  return nil unless loaded_path

  base_path = base_dir_for_path_parameters
  ['gems.locked', 'Gemfile.lock'].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 35

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

#deprecation_check ⇒ Object 


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

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 147

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 103

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|
    if block_given?
      yield pattern, relative_file_path, absolute_file_path
    else
      match_path?(pattern, relative_file_path) ||
        match_path?(pattern, absolute_file_path)
    end
  end
end

#for_all_cops ⇒ Object 


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# File 'lib/rubocop/config.rb', line 99

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

#for_cop(cop) ⇒ Object 


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# File 'lib/rubocop/config.rb', line 95

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

#make_excludes_absolute ⇒ Object 


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# File 'lib/rubocop/config.rb', line 56

def make_excludes_absolute
  each_key do |key|
    @validator.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 162

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

#patterns_to_exclude ⇒ Object 


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# File 'lib/rubocop/config.rb', line 158

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

#patterns_to_include ⇒ Object 


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

def 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 139

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 52

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

#smart_loaded_path ⇒ Object 


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

def smart_loaded_path
  PathUtil.smart_path(@loaded_path)
end

#target_rails_version ⇒ Object 


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# File 'lib/rubocop/config.rb', line 181

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 48

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