Module: Ruby::Overload::ClassMethods

Defined in:
lib/ruby-overload/overload.rb

Instance Method Summary collapse

Instance Method Details

#method_added(method_name) ⇒ Object 



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# File 'lib/ruby-overload/overload.rb', line 10

def method_added(method_name)
  if @_recurse_catch
    @_recurse_catch = nil
    return
  end

  original_method = instance_method(method_name)

  @_matches ||= Hash.new { |h, k| h[k] = {} }
  @_matches[method_name][original_method.arity] = original_method
  undef_method method_name

  # Prevent recursive calls to method_added if we're doing it
  # intentionally here.
  @_recurse_catch = true

  # Localize for closure
  method_matches = @_matches[method_name]

  if @_methods && @_methods[method_name]
    define_method(method_name, @_methods[method_name])
  else
    define_method(method_name) do |*as|
      method_matches[as.size].bind(self).call(*as)
    end

    @_methods ||= {}
    @_methods[method_name] = instance_method(method_name)
  end
end