module Tins::Delegate
This module can be included into modules/classes to make the delegate method available.
Constants
- UNSET
Public Instance Methods
Source
# File lib/tins/dslkit.rb, line 453 def delegate(method_name, opts = {}) to = opts[:to] || UNSET as = opts[:as] || method_name raise ArgumentError, "to argument wasn't defined" if to == UNSET to = to.to_s case when to[0, 2] == '@@' define_method(as) do |*args, &block| if self.class.class_variable_defined?(to) self.class.class_variable_get(to).__send__(method_name, *args, &block) end end when to[0] == ?@ define_method(as) do |*args, &block| if instance_variable_defined?(to) instance_variable_get(to).__send__(method_name, *args, &block) end end when (?A..?Z).include?(to[0]) define_method(as) do |*args, &block| Tins::DeepConstGet.deep_const_get(to).__send__(method_name, *args, &block) end else define_method(as) do |*args, &block| __send__(to).__send__(method_name, *args, &block) end end end
A method to easily delegate methods to an object, stored in an instance variable or returned by a method call. It's used like this: class A delegate :method_here, :@obj, :method_there end or: class A delegate :method_here, :method_call, :method_there end _other_method_name_ defaults to method_name, if it wasn't given.
def delegate(method_name, to: UNSET
, as: method_name)