Enforce frozen string in Rubocop

.rubocop.yml

@@ -97,6 +97,10 @@ Style/StringLiterals:
   Enabled: true
   EnforcedStyle: double_quotes
 
+Style/FrozenStringLiteralComment:
+  Enabled: true
+  EnforcedStyle: always
+
 # Detect hard tabs, no hard tabs.
 Layout/Tab:
   Enabled: true

Gemfile

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 source "https://rubygems.org"
 
 git_source(:github) do |repo_name|

Rakefile

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require "net/http"
 
 $:.unshift __dir__

actioncable/Rakefile

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require "rake/testtask"
 require "pathname"
 require "open3"

actioncable/actioncable.gemspec

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 version = File.read(File.expand_path("../RAILS_VERSION", __dir__)).strip
 
 Gem::Specification.new do |s|

actioncable/bin/test

@@ -1,4 +1,5 @@
 #!/usr/bin/env ruby
+# frozen_string_literal: true
 
 COMPONENT_ROOT = File.expand_path("..", __dir__)
 require_relative "../../tools/test"

actioncable/lib/action_cable.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 #--
 # Copyright (c) 2015-2017 Basecamp, LLC
 #

actioncable/lib/action_cable/channel.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 module ActionCable
   module Channel
     extend ActiveSupport::Autoload

actioncable/lib/action_cable/channel/base.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require "set"
 
 module ActionCable

actioncable/lib/action_cable/channel/broadcasting.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require "active_support/core_ext/object/to_param"
 
 module ActionCable

actioncable/lib/action_cable/channel/callbacks.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require "active_support/callbacks"
 
 module ActionCable

actioncable/lib/action_cable/channel/naming.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 module ActionCable
   module Channel
     module Naming

actioncable/lib/action_cable/channel/periodic_timers.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 module ActionCable
   module Channel
     module PeriodicTimers

actioncable/lib/action_cable/channel/streams.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 module ActionCable
   module Channel
     # Streams allow channels to route broadcastings to the subscriber. A broadcasting is, as discussed elsewhere, a pubsub queue where any data

actioncable/lib/action_cable/connection.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 module ActionCable
   module Connection
     extend ActiveSupport::Autoload

actioncable/lib/action_cable/connection/authorization.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 module ActionCable
   module Connection
     module Authorization

actioncable/lib/action_cable/connection/base.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require "action_dispatch"
 
 module ActionCable

actioncable/lib/action_cable/connection/client_socket.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require "websocket/driver"
 
 module ActionCable

actioncable/lib/action_cable/connection/identification.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require "set"
 
 module ActionCable

actioncable/lib/action_cable/connection/internal_channel.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 module ActionCable
   module Connection
     # Makes it possible for the RemoteConnection to disconnect a specific connection.

actioncable/lib/action_cable/connection/message_buffer.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 module ActionCable
   module Connection
     # Allows us to buffer messages received from the WebSocket before the Connection has been fully initialized, and is ready to receive them.

actioncable/lib/action_cable/connection/stream.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require "thread"
 
 module ActionCable

actioncable/lib/action_cable/connection/stream_event_loop.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require "nio"
 require "thread"
 

actioncable/lib/action_cable/connection/subscriptions.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require "active_support/core_ext/hash/indifferent_access"
 
 module ActionCable

actioncable/lib/action_cable/connection/tagged_logger_proxy.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 module ActionCable
   module Connection
     # Allows the use of per-connection tags against the server logger. This wouldn't work using the traditional

actioncable/lib/action_cable/connection/web_socket.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require "websocket/driver"
 
 module ActionCable

actioncable/lib/action_cable/engine.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require "rails"
 require "action_cable"
 require "action_cable/helpers/action_cable_helper"

actioncable/lib/action_cable/gem_version.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 module ActionCable
   # Returns the version of the currently loaded Action Cable as a <tt>Gem::Version</tt>.
   def self.gem_version

actioncable/lib/action_cable/helpers/action_cable_helper.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 module ActionCable
   module Helpers
     module ActionCableHelper

actioncable/lib/action_cable/remote_connections.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 module ActionCable
   # If you need to disconnect a given connection, you can go through the
   # RemoteConnections. You can find the connections you're looking for by

actioncable/lib/action_cable/server.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 module ActionCable
   module Server
     extend ActiveSupport::Autoload

actioncable/lib/action_cable/server/base.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require "monitor"
 
 module ActionCable

actioncable/lib/action_cable/server/broadcasting.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 module ActionCable
   module Server
     # Broadcasting is how other parts of your application can send messages to a channel's subscribers. As explained in Channel, most of the time, these

actioncable/lib/action_cable/server/configuration.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 module ActionCable
   module Server
     # An instance of this configuration object is available via ActionCable.server.config, which allows you to tweak Action Cable configuration

actioncable/lib/action_cable/server/connections.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 module ActionCable
   module Server
     # Collection class for all the connections that have been established on this specific server. Remember, usually you'll run many Action Cable servers, so

actioncable/lib/action_cable/server/worker.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require "active_support/callbacks"
 require "active_support/core_ext/module/attribute_accessors_per_thread"
 require "concurrent"

actioncable/lib/action_cable/server/worker/active_record_connection_management.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 module ActionCable
   module Server
     class Worker

actioncable/lib/action_cable/subscription_adapter.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 module ActionCable
   module SubscriptionAdapter
     extend ActiveSupport::Autoload

actioncable/lib/action_cable/subscription_adapter/async.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require "action_cable/subscription_adapter/inline"
 
 module ActionCable

actioncable/lib/action_cable/subscription_adapter/base.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 module ActionCable
   module SubscriptionAdapter
     class Base

actioncable/lib/action_cable/subscription_adapter/channel_prefix.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 module ActionCable
   module SubscriptionAdapter
     module ChannelPrefix # :nodoc:

actioncable/lib/action_cable/subscription_adapter/evented_redis.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require "thread"
 
 gem "em-hiredis", "~> 0.3.0"

actioncable/lib/action_cable/subscription_adapter/inline.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 module ActionCable
   module SubscriptionAdapter
     class Inline < Base # :nodoc:

actioncable/lib/action_cable/subscription_adapter/postgresql.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 gem "pg", "~> 0.18"
 require "pg"
 require "thread"

actioncable/lib/action_cable/subscription_adapter/redis.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require "thread"
 
 gem "redis", "~> 3.0"

actioncable/lib/action_cable/subscription_adapter/subscriber_map.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 module ActionCable
   module SubscriptionAdapter
     class SubscriberMap

actioncable/lib/action_cable/version.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require_relative "gem_version"
 
 module ActionCable

actioncable/lib/rails/generators/channel/channel_generator.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 module Rails
   module Generators
     class ChannelGenerator < NamedBase

actioncable/test/channel/base_test.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require "test_helper"
 require "stubs/test_connection"
 require "stubs/room"

actioncable/test/channel/broadcasting_test.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require "test_helper"
 require "stubs/test_connection"
 require "stubs/room"

actioncable/test/channel/naming_test.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require "test_helper"
 
 class ActionCable::Channel::NamingTest < ActiveSupport::TestCase

actioncable/test/channel/periodic_timers_test.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require "test_helper"
 require "stubs/test_connection"
 require "stubs/room"

actioncable/test/channel/rejection_test.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require "test_helper"
 require "stubs/test_connection"
 require "stubs/room"

actioncable/test/channel/stream_test.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require "test_helper"
 require "stubs/test_connection"
 require "stubs/room"

actioncable/test/client_test.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require "test_helper"
 require "concurrent"
 

actioncable/test/connection/authorization_test.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require "test_helper"
 require "stubs/test_server"
 

actioncable/test/connection/base_test.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require "test_helper"
 require "stubs/test_server"
 require "active_support/core_ext/object/json"

actioncable/test/connection/client_socket_test.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require "test_helper"
 require "stubs/test_server"
 

actioncable/test/connection/cross_site_forgery_test.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require "test_helper"
 require "stubs/test_server"
 

actioncable/test/connection/identifier_test.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require "test_helper"
 require "stubs/test_server"
 require "stubs/user"

actioncable/test/connection/multiple_identifiers_test.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require "test_helper"
 require "stubs/test_server"
 require "stubs/user"

actioncable/test/connection/stream_test.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require "test_helper"
 require "stubs/test_server"
 

actioncable/test/connection/string_identifier_test.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require "test_helper"
 require "stubs/test_server"
 

actioncable/test/connection/subscriptions_test.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require "test_helper"
 
 class ActionCable::Connection::SubscriptionsTest < ActionCable::TestCase

actioncable/test/server/base_test.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require "test_helper"
 require "stubs/test_server"
 require "active_support/core_ext/hash/indifferent_access"

actioncable/test/server/broadcasting_test.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require "test_helper"
 require "stubs/test_server"
 

actioncable/test/stubs/global_id.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 class GlobalID
   attr_reader :uri
   delegate :to_param, :to_s, to: :uri

actioncable/test/stubs/room.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 class Room
   attr_reader :id, :name
 

actioncable/test/stubs/test_adapter.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 class SuccessAdapter < ActionCable::SubscriptionAdapter::Base
   def broadcast(channel, payload)
   end

actioncable/test/stubs/test_connection.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require "stubs/user"
 
 class TestConnection

actioncable/test/stubs/test_server.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require "ostruct"
 
 class TestServer

actioncable/test/stubs/user.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 class User
   attr_reader :name
 

actioncable/test/subscription_adapter/async_test.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require "test_helper"
 require_relative "common"
 

actioncable/test/subscription_adapter/base_test.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require "test_helper"
 require "stubs/test_server"
 

actioncable/test/subscription_adapter/channel_prefix.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require "test_helper"
 
 class ActionCable::Server::WithIndependentConfig < ActionCable::Server::Base

actioncable/test/subscription_adapter/common.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require "test_helper"
 require "concurrent"
 

actioncable/test/subscription_adapter/evented_redis_test.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require "test_helper"
 require_relative "common"
 require_relative "channel_prefix"

actioncable/test/subscription_adapter/inline_test.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require "test_helper"
 require_relative "common"
 

actioncable/test/subscription_adapter/postgresql_test.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require "test_helper"
 require_relative "common"
 

actioncable/test/subscription_adapter/redis_test.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require "test_helper"
 require_relative "common"
 require_relative "channel_prefix"

actioncable/test/subscription_adapter/subscriber_map_test.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require "test_helper"
 
 class SubscriberMapTest < ActionCable::TestCase

actioncable/test/test_helper.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require "action_cable"
 require "active_support/testing/autorun"
 

actioncable/test/worker_test.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require "test_helper"
 
 class WorkerTest < ActiveSupport::TestCase

actionmailer/Rakefile

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require "rake/testtask"
 
 desc "Default Task"

actionmailer/actionmailer.gemspec

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 version = File.read(File.expand_path("../RAILS_VERSION", __dir__)).strip
 
 Gem::Specification.new do |s|

actionmailer/bin/test

@@ -1,4 +1,5 @@
 #!/usr/bin/env ruby
+# frozen_string_literal: true
 
 COMPONENT_ROOT = File.expand_path("..", __dir__)
 require_relative "../../tools/test"

actionmailer/lib/action_mailer.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 #--
 # Copyright (c) 2004-2017 David Heinemeier Hansson
 #

actionmailer/lib/action_mailer/base.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require "mail"
 require "action_mailer/collector"
 require "active_support/core_ext/string/inflections"

actionmailer/lib/action_mailer/collector.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require "abstract_controller/collector"
 require "active_support/core_ext/hash/reverse_merge"
 require "active_support/core_ext/array/extract_options"

actionmailer/lib/action_mailer/delivery_job.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require "active_job"
 
 module ActionMailer

actionmailer/lib/action_mailer/delivery_methods.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require "tmpdir"
 
 module ActionMailer

actionmailer/lib/action_mailer/gem_version.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 module ActionMailer
   # Returns the version of the currently loaded Action Mailer as a <tt>Gem::Version</tt>.
   def self.gem_version

actionmailer/lib/action_mailer/inline_preview_interceptor.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require "base64"
 
 module ActionMailer

actionmailer/lib/action_mailer/log_subscriber.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require "active_support/log_subscriber"
 
 module ActionMailer

actionmailer/lib/action_mailer/mail_helper.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 module ActionMailer
   # Provides helper methods for ActionMailer::Base that can be used for easily
   # formatting messages, accessing mailer or message instances, and the

actionmailer/lib/action_mailer/message_delivery.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require "delegate"
 
 module ActionMailer

actionmailer/lib/action_mailer/parameterized.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 module ActionMailer
   # Provides the option to parameterize mailers in order to share instance variable
   # setup, processing, and common headers.

actionmailer/lib/action_mailer/preview.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require "active_support/descendants_tracker"
 
 module ActionMailer

actionmailer/lib/action_mailer/railtie.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require "active_job/railtie"
 require "action_mailer"
 require "rails"

actionmailer/lib/action_mailer/rescuable.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 module ActionMailer #:nodoc:
   # Provides `rescue_from` for mailers. Wraps mailer action processing,
   # mail job processing, and mail delivery.