Class: Module

Inherits:
Object
  • Object
show all
Defined in:
lib/invoca/utils/module.rb

Instance Method Summary collapse

Instance Method Details

#alias_method_chain(target, feature) {|aliased_target, punctuation| ... } ⇒ Object

Custom alias_method_chain that won’t cause infinite recursion if called twice. NOTE: Calling alias_method_chain on alias_method_chain was just way too confusing, so I copied it :-/

Yields:

  • (aliased_target, punctuation) 


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# File 'lib/invoca/utils/module.rb', line 7

def alias_method_chain(target, feature)
  # Strip out punctuation on predicates, bang or writer methods since
  # e.g. target?_without_feature is not a valid method name.
  aliased_target, punctuation = target.to_s.sub(/([?!=])$/, ''), $1 # rubocop:disable Style/PerlBackrefs
  yield(aliased_target, punctuation) if block_given?

  with_method = "#{aliased_target}_with_#{feature}#{punctuation}"
  without_method = "#{aliased_target}_without_#{feature}#{punctuation}"

  unless method_defined?(without_method)
    alias_method without_method, target
    alias_method target, with_method

    if public_method_defined?(without_method)
      public target
    elsif protected_method_defined?(without_method)
      protected target
    elsif private_method_defined?(without_method)
      private target
    end
  end
end