Module: TypeWrapper

Defined in:
lib/type_wrapper.rb,
lib/type_wrapper/module.rb,
lib/type_wrapper/version.rb,
lib/type_wrapper/forwarding.rb

Defined Under Namespace

Classes: Forwarding, Module

Constant Summary collapse

VERSION = 
"1.3.0".freeze

Class Method Summary collapse

Class Method Details

.[](*types) ⇒ Object

Raises:

  • (TypeError) 


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# File 'lib/type_wrapper.rb', line 9

def self.[](*types)
  raise TypeError, "wrong argument type (expected Module(s))" if types.include?(nil)
  raise ArgumentError, "wrong number of arguments (given #{types.size}, expected 2+)" if types.size < 2

  type, *behaviors = *types

  raise ArgumentError, "Module(s) has no public methods defined" if behaviors.flat_map(&:public_instance_methods).empty?

  Class.new DelegateClass(type) do
    alias_method :~@, :__getobj__
    define_method(:inspect) { "#< #{self.class.name || behaviors} #{__getobj__} #>" }

    behaviors.each do |mod|
      include Forwarding.new mod.refines(type), *mod.public_instance_methods, to: :__getobj__
    end
  end
end