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# encoding: utf-8
module Adamantium
# Methods mixed in to adamantium modules
module ModuleMethods
# Return default deep freezer
#
# @return [Freezer::Deep]
#
# @api private
def freezer
Freezer::Deep
end
# Memoize a list of methods
#
# @example
# memoize :hash
#
# @param [Array<#to_s>] methods
# a list of methods to memoize
#
# @return [self]
#
# @api public
def memoize(*methods)
options = methods.last.kind_of?(Hash) ? methods.pop : {}
method_freezer = Freezer.parse(options) || freezer
methods.each { |method| memoize_method(method, method_freezer) }
self
end
private
# Hook called when module is included
#
# @param [Module] descendant
# the module including ModuleMethods
#
# @return [self]
#
# @api private
def included(descendant)
super
descendant.module_eval { include Adamantium }
end
# Memoize the named method
#
# @param [Symbol] method_name
# a method name to memoize
# @param [#call] freezer
# a callable object to freeze the value
#
# @return [undefined]
#
# @api private
def memoize_method(method_name, freezer)
memoized_methods[method_name] = Memoizable::MethodBuilder
.new(self, method_name, freezer).call
end
end # ModuleMethods
end # Adamantium
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