diff options
Diffstat (limited to 'activesupport/lib/active_support/core_ext/module')
14 files changed, 242 insertions, 239 deletions
diff --git a/activesupport/lib/active_support/core_ext/module/aliasing.rb b/activesupport/lib/active_support/core_ext/module/aliasing.rb index b6934b9c54..6f64d11627 100644 --- a/activesupport/lib/active_support/core_ext/module/aliasing.rb +++ b/activesupport/lib/active_support/core_ext/module/aliasing.rb @@ -1,52 +1,6 @@ -class Module - # NOTE: This method is deprecated. Please use <tt>Module#prepend</tt> that - # comes with Ruby 2.0 or newer instead. - # - # Encapsulates the common pattern of: - # - # alias_method :foo_without_feature, :foo - # alias_method :foo, :foo_with_feature - # - # With this, you simply do: - # - # alias_method_chain :foo, :feature - # - # And both aliases are set up for you. - # - # Query and bang methods (foo?, foo!) keep the same punctuation: - # - # alias_method_chain :foo?, :feature - # - # is equivalent to - # - # alias_method :foo_without_feature?, :foo? - # alias_method :foo?, :foo_with_feature? - # - # so you can safely chain foo, foo?, foo! and/or foo= with the same feature. - def alias_method_chain(target, feature) - ActiveSupport::Deprecation.warn("alias_method_chain is deprecated. Please, use Module#prepend instead. From module, you can access the original method using super.") - - # Strip out punctuation on predicates, bang or writer methods since - # e.g. target?_without_feature is not a valid method name. - aliased_target, punctuation = target.to_s.sub(/([?!=])$/, ''), $1 - yield(aliased_target, punctuation) if block_given? - - with_method = "#{aliased_target}_with_#{feature}#{punctuation}" - without_method = "#{aliased_target}_without_#{feature}#{punctuation}" - - alias_method without_method, target - alias_method target, with_method - - case - when public_method_defined?(without_method) - public target - when protected_method_defined?(without_method) - protected target - when private_method_defined?(without_method) - private target - end - end +# frozen_string_literal: true +class Module # Allows you to make aliases for attributes, which includes # getter, setter, and a predicate. # @@ -65,6 +19,9 @@ class Module # e.subject = "Megastars" # e.title # => "Megastars" def alias_attribute(new_name, old_name) + # The following reader methods use an explicit `self` receiver in order to + # support aliases that start with an uppercase letter. Otherwise, they would + # be resolved as constants instead. module_eval <<-STR, __FILE__, __LINE__ + 1 def #{new_name}; self.#{old_name}; end # def subject; self.title; end def #{new_name}?; self.#{old_name}?; end # def subject?; self.title?; end diff --git a/activesupport/lib/active_support/core_ext/module/anonymous.rb b/activesupport/lib/active_support/core_ext/module/anonymous.rb index 510c9a5430..d1c86b8722 100644 --- a/activesupport/lib/active_support/core_ext/module/anonymous.rb +++ b/activesupport/lib/active_support/core_ext/module/anonymous.rb @@ -1,3 +1,5 @@ +# frozen_string_literal: true + class Module # A module may or may not have a name. # diff --git a/activesupport/lib/active_support/core_ext/module/attr_internal.rb b/activesupport/lib/active_support/core_ext/module/attr_internal.rb index 93fb598650..7801f6d181 100644 --- a/activesupport/lib/active_support/core_ext/module/attr_internal.rb +++ b/activesupport/lib/active_support/core_ext/module/attr_internal.rb @@ -1,12 +1,14 @@ +# frozen_string_literal: true + class Module # Declares an attribute reader backed by an internally-named instance variable. def attr_internal_reader(*attrs) - attrs.each {|attr_name| attr_internal_define(attr_name, :reader)} + attrs.each { |attr_name| attr_internal_define(attr_name, :reader) } end # Declares an attribute writer backed by an internally-named instance variable. def attr_internal_writer(*attrs) - attrs.each {|attr_name| attr_internal_define(attr_name, :writer)} + attrs.each { |attr_name| attr_internal_define(attr_name, :writer) } end # Declares an attribute reader and writer backed by an internally-named instance @@ -18,7 +20,7 @@ class Module alias_method :attr_internal, :attr_internal_accessor class << self; attr_accessor :attr_internal_naming_format end - self.attr_internal_naming_format = '@_%s' + self.attr_internal_naming_format = "@_%s" private def attr_internal_ivar_name(attr) @@ -26,7 +28,7 @@ class Module end def attr_internal_define(attr_name, type) - internal_name = attr_internal_ivar_name(attr_name).sub(/\A@/, '') + internal_name = attr_internal_ivar_name(attr_name).sub(/\A@/, "") # use native attr_* methods as they are faster on some Ruby implementations send("attr_#{type}", internal_name) attr_name, internal_name = "#{attr_name}=", "#{internal_name}=" if type == :writer diff --git a/activesupport/lib/active_support/core_ext/module/attribute_accessors.rb b/activesupport/lib/active_support/core_ext/module/attribute_accessors.rb index 567ac825e9..580baffa2b 100644 --- a/activesupport/lib/active_support/core_ext/module/attribute_accessors.rb +++ b/activesupport/lib/active_support/core_ext/module/attribute_accessors.rb @@ -1,4 +1,7 @@ -require 'active_support/core_ext/array/extract_options' +# frozen_string_literal: true + +require "active_support/core_ext/array/extract_options" +require "active_support/core_ext/regexp" # Extends the module object with class/module and instance accessors for # class/module attributes, just like the native attr* accessors for instance @@ -6,7 +9,8 @@ require 'active_support/core_ext/array/extract_options' class Module # Defines a class attribute and creates a class and instance reader methods. # The underlying class variable is set to +nil+, if it is not previously - # defined. + # defined. All class and instance methods created will be public, even if + # this method is called with a private or protected access modifier. # # module HairColors # mattr_reader :hair_colors @@ -36,13 +40,10 @@ class Module # # Person.new.hair_colors # => NoMethodError # - # - # Also, you can pass a block to set up the attribute with a default value. + # You can set a default value for the attribute. # # module HairColors - # mattr_reader :hair_colors do - # [:brown, :black, :blonde, :red] - # end + # mattr_reader :hair_colors, default: [:brown, :black, :blonde, :red] # end # # class Person @@ -50,10 +51,9 @@ class Module # end # # Person.new.hair_colors # => [:brown, :black, :blonde, :red] - def mattr_reader(*syms) - options = syms.extract_options! + def mattr_reader(*syms, instance_reader: true, instance_accessor: true, default: nil) syms.each do |sym| - raise NameError.new("invalid attribute name: #{sym}") unless sym =~ /\A[_A-Za-z]\w*\z/ + raise NameError.new("invalid attribute name: #{sym}") unless /\A[_A-Za-z]\w*\z/.match?(sym) class_eval(<<-EOS, __FILE__, __LINE__ + 1) @@#{sym} = nil unless defined? @@#{sym} @@ -62,20 +62,24 @@ class Module end EOS - unless options[:instance_reader] == false || options[:instance_accessor] == false + if instance_reader && instance_accessor class_eval(<<-EOS, __FILE__, __LINE__ + 1) def #{sym} @@#{sym} end EOS end - class_variable_set("@@#{sym}", yield) if block_given? + + sym_default_value = (block_given? && default.nil?) ? yield : default + class_variable_set("@@#{sym}", sym_default_value) unless sym_default_value.nil? end end alias :cattr_reader :mattr_reader # Defines a class attribute and creates a class and instance writer methods to - # allow assignment to the attribute. + # allow assignment to the attribute. All class and instance methods created + # will be public, even if this method is called with a private or protected + # access modifier. # # module HairColors # mattr_writer :hair_colors @@ -103,12 +107,10 @@ class Module # # Person.new.hair_colors = [:blonde, :red] # => NoMethodError # - # Also, you can pass a block to set up the attribute with a default value. + # You can set a default value for the attribute. # # module HairColors - # mattr_writer :hair_colors do - # [:brown, :black, :blonde, :red] - # end + # mattr_writer :hair_colors, default: [:brown, :black, :blonde, :red] # end # # class Person @@ -116,10 +118,9 @@ class Module # end # # Person.class_variable_get("@@hair_colors") # => [:brown, :black, :blonde, :red] - def mattr_writer(*syms) - options = syms.extract_options! + def mattr_writer(*syms, instance_writer: true, instance_accessor: true, default: nil) syms.each do |sym| - raise NameError.new("invalid attribute name: #{sym}") unless sym =~ /\A[_A-Za-z]\w*\z/ + raise NameError.new("invalid attribute name: #{sym}") unless /\A[_A-Za-z]\w*\z/.match?(sym) class_eval(<<-EOS, __FILE__, __LINE__ + 1) @@#{sym} = nil unless defined? @@#{sym} @@ -128,19 +129,23 @@ class Module end EOS - unless options[:instance_writer] == false || options[:instance_accessor] == false + if instance_writer && instance_accessor class_eval(<<-EOS, __FILE__, __LINE__ + 1) def #{sym}=(obj) @@#{sym} = obj end EOS end - send("#{sym}=", yield) if block_given? + + sym_default_value = (block_given? && default.nil?) ? yield : default + send("#{sym}=", sym_default_value) unless sym_default_value.nil? end end alias :cattr_writer :mattr_writer # Defines both class and instance accessors for class attributes. + # All class and instance methods created will be public, even if + # this method is called with a private or protected access modifier. # # module HairColors # mattr_accessor :hair_colors @@ -191,12 +196,10 @@ class Module # Person.new.hair_colors = [:brown] # => NoMethodError # Person.new.hair_colors # => NoMethodError # - # Also you can pass a block to set up the attribute with a default value. + # You can set a default value for the attribute. # # module HairColors - # mattr_accessor :hair_colors do - # [:brown, :black, :blonde, :red] - # end + # mattr_accessor :hair_colors, default: [:brown, :black, :blonde, :red] # end # # class Person @@ -204,9 +207,9 @@ class Module # end # # Person.class_variable_get("@@hair_colors") # => [:brown, :black, :blonde, :red] - def mattr_accessor(*syms, &blk) - mattr_reader(*syms, &blk) - mattr_writer(*syms) + def mattr_accessor(*syms, instance_reader: true, instance_writer: true, instance_accessor: true, default: nil, &blk) + mattr_reader(*syms, instance_reader: instance_reader, instance_accessor: instance_accessor, default: default, &blk) + mattr_writer(*syms, instance_writer: instance_writer, instance_accessor: instance_accessor, default: default) end alias :cattr_accessor :mattr_accessor end diff --git a/activesupport/lib/active_support/core_ext/module/attribute_accessors_per_thread.rb b/activesupport/lib/active_support/core_ext/module/attribute_accessors_per_thread.rb index 0b3d18301e..4b9b6ea9bd 100644 --- a/activesupport/lib/active_support/core_ext/module/attribute_accessors_per_thread.rb +++ b/activesupport/lib/active_support/core_ext/module/attribute_accessors_per_thread.rb @@ -1,9 +1,12 @@ -require 'active_support/core_ext/array/extract_options' +# frozen_string_literal: true + +require "active_support/core_ext/array/extract_options" +require "active_support/core_ext/regexp" # Extends the module object with class/module and instance accessors for # class/module attributes, just like the native attr* accessors for instance # attributes, but does so on a per-thread basis. -# +# # So the values are scoped within the Thread.current space under the class name # of the module. class Module @@ -25,7 +28,7 @@ class Module # end # # => NameError: invalid attribute name: 1_Badname # - # If you want to opt out the creation on the instance reader method, pass + # If you want to opt out of the creation of the instance reader method, pass # <tt>instance_reader: false</tt> or <tt>instance_accessor: false</tt>. # # class Current @@ -33,21 +36,24 @@ class Module # end # # Current.new.user # => NoMethodError - def thread_mattr_reader(*syms) + def thread_mattr_reader(*syms) # :nodoc: options = syms.extract_options! syms.each do |sym| - raise NameError.new("invalid attribute name: #{sym}") unless sym =~ /^[_A-Za-z]\w*$/ + raise NameError.new("invalid attribute name: #{sym}") unless /^[_A-Za-z]\w*$/.match?(sym) + + # The following generated method concatenates `name` because we want it + # to work with inheritance via polymorphism. class_eval(<<-EOS, __FILE__, __LINE__ + 1) def self.#{sym} - Thread.current[:"attr_#{name}_#{sym}"] + Thread.current["attr_" + name + "_#{sym}"] end EOS unless options[:instance_reader] == false || options[:instance_accessor] == false class_eval(<<-EOS, __FILE__, __LINE__ + 1) def #{sym} - Thread.current[:"attr_#{name}_#{sym}"] + self.class.#{sym} end EOS end @@ -65,7 +71,7 @@ class Module # Current.user = "DHH" # Thread.current[:attr_Current_user] # => "DHH" # - # If you want to opt out the instance writer method, pass + # If you want to opt out of the creation of the instance writer method, pass # <tt>instance_writer: false</tt> or <tt>instance_accessor: false</tt>. # # class Current @@ -73,20 +79,23 @@ class Module # end # # Current.new.user = "DHH" # => NoMethodError - def thread_mattr_writer(*syms) + def thread_mattr_writer(*syms) # :nodoc: options = syms.extract_options! syms.each do |sym| - raise NameError.new("invalid attribute name: #{sym}") unless sym =~ /^[_A-Za-z]\w*$/ + raise NameError.new("invalid attribute name: #{sym}") unless /^[_A-Za-z]\w*$/.match?(sym) + + # The following generated method concatenates `name` because we want it + # to work with inheritance via polymorphism. class_eval(<<-EOS, __FILE__, __LINE__ + 1) def self.#{sym}=(obj) - Thread.current[:"attr_#{name}_#{sym}"] = obj + Thread.current["attr_" + name + "_#{sym}"] = obj end EOS unless options[:instance_writer] == false || options[:instance_accessor] == false class_eval(<<-EOS, __FILE__, __LINE__ + 1) def #{sym}=(obj) - Thread.current[:"attr_#{name}_#{sym}"] = obj + self.class.#{sym} = obj end EOS end @@ -133,9 +142,9 @@ class Module # # Current.new.user = "DHH" # => NoMethodError # Current.new.user # => NoMethodError - def thread_mattr_accessor(*syms, &blk) - thread_mattr_reader(*syms, &blk) - thread_mattr_writer(*syms, &blk) + def thread_mattr_accessor(*syms) + thread_mattr_reader(*syms) + thread_mattr_writer(*syms) end alias :thread_cattr_accessor :thread_mattr_accessor end diff --git a/activesupport/lib/active_support/core_ext/module/concerning.rb b/activesupport/lib/active_support/core_ext/module/concerning.rb index 65b88b9bbd..7bbbf321ab 100644 --- a/activesupport/lib/active_support/core_ext/module/concerning.rb +++ b/activesupport/lib/active_support/core_ext/module/concerning.rb @@ -1,4 +1,6 @@ -require 'active_support/concern' +# frozen_string_literal: true + +require "active_support/concern" class Module # = Bite-sized separation of concerns @@ -20,7 +22,7 @@ class Module # # == Using comments: # - # class Todo + # class Todo < ApplicationRecord # # Other todo implementation # # ... # @@ -28,7 +30,6 @@ class Module # has_many :events # # before_create :track_creation - # after_destroy :track_deletion # # private # def track_creation @@ -40,7 +41,7 @@ class Module # # Noisy syntax. # - # class Todo + # class Todo < ApplicationRecord # # Other todo implementation # # ... # @@ -50,7 +51,6 @@ class Module # included do # has_many :events # before_create :track_creation - # after_destroy :track_deletion # end # # private @@ -68,7 +68,7 @@ class Module # increased overhead can be a reasonable tradeoff even if it reduces our # at-a-glance perception of how things work. # - # class Todo + # class Todo < ApplicationRecord # # Other todo implementation # # ... # @@ -80,7 +80,7 @@ class Module # By quieting the mix-in noise, we arrive at a natural, low-ceremony way to # separate bite-sized concerns. # - # class Todo + # class Todo < ApplicationRecord # # Other todo implementation # # ... # @@ -88,7 +88,6 @@ class Module # included do # has_many :events # before_create :track_creation - # after_destroy :track_deletion # end # # private @@ -99,7 +98,7 @@ class Module # end # # Todo.ancestors - # # => [Todo, Todo::EventTracking, Object] + # # => [Todo, Todo::EventTracking, ApplicationRecord, Object] # # This small step has some wonderful ripple effects. We can # * grok the behavior of our class in one glance, diff --git a/activesupport/lib/active_support/core_ext/module/delegation.rb b/activesupport/lib/active_support/core_ext/module/delegation.rb index 24450cd221..4310df3024 100644 --- a/activesupport/lib/active_support/core_ext/module/delegation.rb +++ b/activesupport/lib/active_support/core_ext/module/delegation.rb @@ -1,15 +1,19 @@ -require 'set' +# frozen_string_literal: true + +require "set" +require "active_support/core_ext/regexp" class Module # Error generated by +delegate+ when a method is called on +nil+ and +allow_nil+ # option is not used. class DelegationError < NoMethodError; end + RUBY_RESERVED_KEYWORDS = %w(alias and BEGIN begin break case class def defined? do + else elsif END end ensure false for if in module next nil not or redo rescue retry + return self super then true undef unless until when while yield) + DELEGATION_RESERVED_KEYWORDS = %w(_ arg args block) DELEGATION_RESERVED_METHOD_NAMES = Set.new( - %w(_ arg args alias and BEGIN begin block break case class def defined? do - else elsif END end ensure false for if in module next nil not or redo - rescue retry return self super then true undef unless until when while - yield) + RUBY_RESERVED_KEYWORDS + DELEGATION_RESERVED_KEYWORDS ).freeze # Provides a +delegate+ class method to easily expose contained objects' @@ -18,7 +22,8 @@ class Module # ==== Options # * <tt>:to</tt> - Specifies the target object # * <tt>:prefix</tt> - Prefixes the new method with the target name or a custom prefix - # * <tt>:allow_nil</tt> - if set to true, prevents a +NoMethodError+ from being raised + # * <tt>:allow_nil</tt> - if set to true, prevents a +Module::DelegationError+ + # from being raised # # The macro receives one or more method names (specified as symbols or # strings) and the name of the target object via the <tt>:to</tt> option @@ -110,18 +115,16 @@ class Module # invoice.customer_address # => 'Vimmersvej 13' # # If the target is +nil+ and does not respond to the delegated method a - # +NoMethodError+ is raised, as with any other value. Sometimes, however, it - # makes sense to be robust to that situation and that is the purpose of the - # <tt>:allow_nil</tt> option: If the target is not +nil+, or it is and - # responds to the method, everything works as usual. But if it is +nil+ and - # does not respond to the delegated method, +nil+ is returned. + # +Module::DelegationError+ is raised. If you wish to instead return +nil+, + # use the <tt>:allow_nil</tt> option. # # class User < ActiveRecord::Base # has_one :profile # delegate :age, to: :profile # end # - # User.new.age # raises NoMethodError: undefined method `age' + # User.new.age + # # => Module::DelegationError: User#age delegated to profile.age, but profile is nil # # But if not having a profile yet is fine and should not be an error # condition: @@ -148,33 +151,32 @@ class Module # Foo.new("Bar").name # raises NoMethodError: undefined method `name' # # The target method must be public, otherwise it will raise +NoMethodError+. - # def delegate(*methods, to: nil, prefix: nil, allow_nil: nil) unless to - raise ArgumentError, 'Delegation needs a target. Supply an options hash with a :to key as the last argument (e.g. delegate :hello, to: :greeter).' + raise ArgumentError, "Delegation needs a target. Supply an options hash with a :to key as the last argument (e.g. delegate :hello, to: :greeter)." end - if prefix == true && to =~ /^[^a-z_]/ - raise ArgumentError, 'Can only automatically set the delegation prefix when delegating to a method.' + if prefix == true && /^[^a-z_]/.match?(to) + raise ArgumentError, "Can only automatically set the delegation prefix when delegating to a method." end method_prefix = \ if prefix "#{prefix == true ? to : prefix}_" else - '' + "" end - file, line = caller(1, 1).first.split(':'.freeze, 2) - line = line.to_i + location = caller_locations(1, 1).first + file, line = location.path, location.lineno to = to.to_s to = "self.#{to}" if DELEGATION_RESERVED_METHOD_NAMES.include?(to) - methods.each do |method| + methods.map do |method| # Attribute writer methods only accept one argument. Makes sure []= # methods still accept two arguments. - definition = (method =~ /[^\]]=$/) ? 'arg' : '*args, &block' + definition = /[^\]]=$/.match?(method) ? "arg" : "*args, &block" # The following generated method calls the target exactly once, storing # the returned value in a dummy variable. @@ -191,7 +193,7 @@ class Module " _.#{method}(#{definition})", "end", "end" - ].join ';' + ].join ";" else exception = %(raise DelegationError, "#{self}##{method_prefix}#{method} delegated to #{to}.#{method}, but #{to} is nil: \#{self.inspect}") @@ -206,10 +208,80 @@ class Module " raise", " end", "end" - ].join ';' + ].join ";" end module_eval(method_def, file, line) end end + + # When building decorators, a common pattern may emerge: + # + # class Partition + # def initialize(event) + # @event = event + # end + # + # def person + # @event.detail.person || @event.creator + # end + # + # private + # def respond_to_missing?(name, include_private = false) + # @event.respond_to?(name, include_private) + # end + # + # def method_missing(method, *args, &block) + # @event.send(method, *args, &block) + # end + # end + # + # With <tt>Module#delegate_missing_to</tt>, the above is condensed to: + # + # class Partition + # delegate_missing_to :@event + # + # def initialize(event) + # @event = event + # end + # + # def person + # @event.detail.person || @event.creator + # end + # end + # + # The target can be anything callable within the object, e.g. instance + # variables, methods, constants, etc. + # + # The delegated method must be public on the target, otherwise it will + # raise +NoMethodError+. + def delegate_missing_to(target) + target = target.to_s + target = "self.#{target}" if DELEGATION_RESERVED_METHOD_NAMES.include?(target) + + module_eval <<-RUBY, __FILE__, __LINE__ + 1 + def respond_to_missing?(name, include_private = false) + # It may look like an oversight, but we deliberately do not pass + # +include_private+, because they do not get delegated. + + #{target}.respond_to?(name) || super + end + + def method_missing(method, *args, &block) + if #{target}.respond_to?(method) + #{target}.public_send(method, *args, &block) + else + begin + super + rescue NoMethodError + if #{target}.nil? + raise DelegationError, "\#{method} delegated to #{target}, but #{target} is nil" + else + raise + end + end + end + end + RUBY + end end diff --git a/activesupport/lib/active_support/core_ext/module/deprecation.rb b/activesupport/lib/active_support/core_ext/module/deprecation.rb index f3f2e7f5fc..71c42eb357 100644 --- a/activesupport/lib/active_support/core_ext/module/deprecation.rb +++ b/activesupport/lib/active_support/core_ext/module/deprecation.rb @@ -1,3 +1,5 @@ +# frozen_string_literal: true + class Module # deprecate :foo # deprecate bar: 'message' diff --git a/activesupport/lib/active_support/core_ext/module/introspection.rb b/activesupport/lib/active_support/core_ext/module/introspection.rb index fa692e1b0e..c5bb598bd1 100644 --- a/activesupport/lib/active_support/core_ext/module/introspection.rb +++ b/activesupport/lib/active_support/core_ext/module/introspection.rb @@ -1,14 +1,18 @@ -require 'active_support/inflector' +# frozen_string_literal: true + +require "active_support/inflector" class Module # Returns the name of the module containing this one. # # M::N.parent_name # => "M" def parent_name - if defined? @parent_name + if defined?(@parent_name) @parent_name else - @parent_name = name =~ /::[^:]+\Z/ ? $`.freeze : nil + parent_name = name =~ /::[^:]+\Z/ ? $`.freeze : nil + @parent_name = parent_name unless frozen? + parent_name end end @@ -46,21 +50,13 @@ class Module def parents parents = [] if parent_name - parts = parent_name.split('::') + parts = parent_name.split("::") until parts.empty? - parents << ActiveSupport::Inflector.constantize(parts * '::') + parents << ActiveSupport::Inflector.constantize(parts * "::") parts.pop end end parents << Object unless parents.include? Object parents end - - def local_constants #:nodoc: - ActiveSupport::Deprecation.warn(<<-MSG.squish) - Module#local_constants is deprecated and will be removed in Rails 5.1. - Use Module#constants(false) instead. - MSG - constants(false) - end end diff --git a/activesupport/lib/active_support/core_ext/module/method_transplanting.rb b/activesupport/lib/active_support/core_ext/module/method_transplanting.rb deleted file mode 100644 index 1fde3db070..0000000000 --- a/activesupport/lib/active_support/core_ext/module/method_transplanting.rb +++ /dev/null @@ -1,3 +0,0 @@ -require 'active_support/deprecation' - -ActiveSupport::Deprecation.warn("This file is deprecated and will be removed in Rails 5.1 with no replacement.") diff --git a/activesupport/lib/active_support/core_ext/module/qualified_const.rb b/activesupport/lib/active_support/core_ext/module/qualified_const.rb deleted file mode 100644 index 3ea39d4267..0000000000 --- a/activesupport/lib/active_support/core_ext/module/qualified_const.rb +++ /dev/null @@ -1,70 +0,0 @@ -require 'active_support/core_ext/string/inflections' - -#-- -# Allows code reuse in the methods below without polluting Module. -#++ - -module ActiveSupport - module QualifiedConstUtils - def self.raise_if_absolute(path) - raise NameError.new("wrong constant name #$&") if path =~ /\A::[^:]+/ - end - - def self.names(path) - path.split('::') - end - end -end - -## -# Extends the API for constants to be able to deal with qualified names. Arguments -# are assumed to be relative to the receiver. -# -#-- -# Qualified names are required to be relative because we are extending existing -# methods that expect constant names, ie, relative paths of length 1. For example, -# Object.const_get('::String') raises NameError and so does qualified_const_get. -#++ -class Module - def qualified_const_defined?(path, search_parents=true) - ActiveSupport::Deprecation.warn(<<-MESSAGE.squish) - Module#qualified_const_defined? is deprecated in favour of the builtin - Module#const_defined? and will be removed in Rails 5.1. - MESSAGE - - ActiveSupport::QualifiedConstUtils.raise_if_absolute(path) - - ActiveSupport::QualifiedConstUtils.names(path).inject(self) do |mod, name| - return unless mod.const_defined?(name, search_parents) - mod.const_get(name) - end - return true - end - - def qualified_const_get(path) - ActiveSupport::Deprecation.warn(<<-MESSAGE.squish) - Module#qualified_const_get is deprecated in favour of the builtin - Module#const_get and will be removed in Rails 5.1. - MESSAGE - - ActiveSupport::QualifiedConstUtils.raise_if_absolute(path) - - ActiveSupport::QualifiedConstUtils.names(path).inject(self) do |mod, name| - mod.const_get(name) - end - end - - def qualified_const_set(path, value) - ActiveSupport::Deprecation.warn(<<-MESSAGE.squish) - Module#qualified_const_set is deprecated in favour of the builtin - Module#const_set and will be removed in Rails 5.1. - MESSAGE - - ActiveSupport::QualifiedConstUtils.raise_if_absolute(path) - - const_name = path.demodulize - mod_name = path.deconstantize - mod = mod_name.empty? ? self : const_get(mod_name) - mod.const_set(const_name, value) - end -end diff --git a/activesupport/lib/active_support/core_ext/module/reachable.rb b/activesupport/lib/active_support/core_ext/module/reachable.rb index 5d3d0e9851..e9cbda5245 100644 --- a/activesupport/lib/active_support/core_ext/module/reachable.rb +++ b/activesupport/lib/active_support/core_ext/module/reachable.rb @@ -1,8 +1,11 @@ -require 'active_support/core_ext/module/anonymous' -require 'active_support/core_ext/string/inflections' +# frozen_string_literal: true + +require "active_support/core_ext/module/anonymous" +require "active_support/core_ext/string/inflections" class Module def reachable? #:nodoc: !anonymous? && name.safe_constantize.equal?(self) end + deprecate :reachable? end diff --git a/activesupport/lib/active_support/core_ext/module/redefine_method.rb b/activesupport/lib/active_support/core_ext/module/redefine_method.rb new file mode 100644 index 0000000000..a0a6622ca4 --- /dev/null +++ b/activesupport/lib/active_support/core_ext/module/redefine_method.rb @@ -0,0 +1,49 @@ +# frozen_string_literal: true + +class Module + if RUBY_VERSION >= "2.3" + # Marks the named method as intended to be redefined, if it exists. + # Suppresses the Ruby method redefinition warning. Prefer + # #redefine_method where possible. + def silence_redefinition_of_method(method) + if method_defined?(method) || private_method_defined?(method) + # This suppresses the "method redefined" warning; the self-alias + # looks odd, but means we don't need to generate a unique name + alias_method method, method + end + end + else + def silence_redefinition_of_method(method) + if method_defined?(method) || private_method_defined?(method) + alias_method :__rails_redefine, method + remove_method :__rails_redefine + end + end + end + + # Replaces the existing method definition, if there is one, with the passed + # block as its body. + def redefine_method(method, &block) + visibility = method_visibility(method) + silence_redefinition_of_method(method) + define_method(method, &block) + send(visibility, method) + end + + # Replaces the existing singleton method definition, if there is one, with + # the passed block as its body. + def redefine_singleton_method(method, &block) + singleton_class.redefine_method(method, &block) + end + + def method_visibility(method) # :nodoc: + case + when private_method_defined?(method) + :private + when protected_method_defined?(method) + :protected + else + :public + end + end +end diff --git a/activesupport/lib/active_support/core_ext/module/remove_method.rb b/activesupport/lib/active_support/core_ext/module/remove_method.rb index d5ec16d68a..97eb5f9eca 100644 --- a/activesupport/lib/active_support/core_ext/module/remove_method.rb +++ b/activesupport/lib/active_support/core_ext/module/remove_method.rb @@ -1,3 +1,7 @@ +# frozen_string_literal: true + +require "active_support/core_ext/module/redefine_method" + class Module # Removes the named method, if it exists. def remove_possible_method(method) @@ -8,28 +12,6 @@ class Module # Removes the named singleton method, if it exists. def remove_possible_singleton_method(method) - singleton_class.instance_eval do - remove_possible_method(method) - end - end - - # Replaces the existing method definition, if there is one, with the passed - # block as its body. - def redefine_method(method, &block) - visibility = method_visibility(method) - remove_possible_method(method) - define_method(method, &block) - send(visibility, method) - end - - def method_visibility(method) # :nodoc: - case - when private_method_defined?(method) - :private - when protected_method_defined?(method) - :protected - else - :public - end + singleton_class.remove_possible_method(method) end end |