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# frozen_string_literal: true
module HTTParty
module ModuleInheritableAttributes #:nodoc:
def self.included(base)
base.extend(ClassMethods)
end
# borrowed from Rails 3.2 ActiveSupport
def self.hash_deep_dup(hash)
duplicate = hash.dup
duplicate.each_pair do |key, value|
if value.is_a?(Hash)
duplicate[key] = hash_deep_dup(value)
elsif value.is_a?(Proc)
duplicate[key] = value.dup
else
duplicate[key] = value
end
end
duplicate
end
module ClassMethods #:nodoc:
def mattr_inheritable(*args)
@mattr_inheritable_attrs ||= [:mattr_inheritable_attrs]
@mattr_inheritable_attrs += args
args.each do |arg|
singleton_class.attr_accessor(arg)
end
@mattr_inheritable_attrs
end
def inherited(subclass)
super
@mattr_inheritable_attrs.each do |inheritable_attribute|
ivar = :"@#{inheritable_attribute}"
subclass.instance_variable_set(ivar, instance_variable_get(ivar).clone)
if instance_variable_get(ivar).respond_to?(:merge)
subclass.class_eval <<~RUBY, __FILE__, __LINE__ + 1
def self.#{inheritable_attribute}
duplicate = ModuleInheritableAttributes.hash_deep_dup(#{ivar})
#{ivar} = superclass.#{inheritable_attribute}.merge(duplicate)
end
RUBY
end
end
end
end
end
end
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