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# File 'lib/apple_core/extensions/class.rb', line 15
def class_attribute(method_name, options = {})
instance_reader = options.fetch(:instance_accessor, true) &&
options.fetch(:instance_reader, true)
instance_writer = options.fetch(:instance_accessor, true) &&
options.fetch(:instance_writer, true)
remove_possible_singleton_method(method_name)
define_singleton_method(method_name) { options[:default] }
ivar = "@#{method_name}"
remove_possible_singleton_method("#{method_name}=")
define_singleton_method("#{method_name}=") do |val|
singleton_class.class_eval do
remove_possible_method(method_name)
define_method(method_name) { val }
end
if singleton_class?
class_eval do
remove_possible_method(method_name)
define_method(method_name) do
if instance_variable_defined? ivar
instance_variable_get ivar
else
singleton_class.send method_name
end
end
end
end
val
end
if instance_reader
remove_possible_method method_name
define_method(method_name) do
if instance_variable_defined?(ivar)
instance_variable_get ivar
else
self.class.public_send method_name
end
end
end
if instance_writer
remove_possible_method "#{method_name}="
attr_writer method_name
end
end
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