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adamantium.rb
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adamantium.rb
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# encoding: utf-8
require 'ice_nine'
require 'memoizable'
# Allows objects to be made immutable
module Adamantium
# Defaults to less strict defaults
module Flat
# Return flat freezer
#
# @return [Freezer::Flat]
#
# @api private
def freezer
Freezer::Flat
end
# Hook called when module is included
#
# @param [Class,Module] descendant
#
# @return [undefined]
#
# @api private
def self.included(descendant)
descendant.instance_exec(self) do |mod|
include Adamantium
extend mod
end
end
private_class_method :included
end # Flat
# Hook called when module is included
#
# @param [Module] descendant
# the module or class including Adamantium
#
# @return [undefined]
#
# @api private
def self.included(descendant)
descendant.class_eval do
include Memoizable
extend ModuleMethods
extend ClassMethods if instance_of?(Class)
end
end
private_class_method :included
# Alias to the original dup method
#
# @return [Object]
#
# @api private
alias_method :__adamantium_dup__, :dup
private :__adamantium_dup__
# A noop #dup for immutable objects
#
# @example
# object.dup # => self
#
# @return [self]
#
# @api public
def dup
self
end
protected
# Transform the object with the provided block
#
# @return [Object]
#
# @api public
def transform(&block)
copy = __adamantium_dup__
copy.instance_eval(&block)
self.class.freezer.freeze(copy)
end
# Transform the object with the provided block if the condition is false
#
# @param [Boolean] condition
#
# @return [Object]
#
# @api public
def transform_unless(condition, &block)
condition ? self : transform(&block)
end
end # Adamantium
require 'adamantium/module_methods'
require 'adamantium/class_methods'
require 'adamantium/freezer'
require 'adamantium/mutable'
require 'adamantium/version'