Module: Tagful::ClassMethods

Defined in:
lib/tagful.rb

Instance Method Summary collapse

Instance Method Details

#tagful(method_id, error_module_or_class = nil) ⇒ Object 



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# File 'lib/tagful.rb', line 15

def tagful(method_id, error_module_or_class = nil)
  visibility =
    case
    when public_method_defined?(method_id)
      :public
    when protected_method_defined?(method_id)
      :protected
    when private_method_defined?(method_id)
      :private
    else
      raise ::Tagful::NoMethod
    end

  if error_module_or_class.nil?
    if @tagful_error_module_or_class.is_a?(Class)
      error_class = @tagful_error_module_or_class
    else
      error_module = @tagful_error_module_or_class
      error_module ||= 'Error'
    end
  else
    if error_module_or_class.is_a?(Class)
      error_class = error_module_or_class
    else
      error_module = error_module_or_class
    end
  end

  if error_class
    class_eval(<<-CODE)
      module TagfulMethods
        #{visibility}
        def #{method_id}(*args)
          super
        rescue => e
          raise #{error_class}, e.message
        end
      end

      prepend(TagfulMethods)
    CODE
  else
    class_eval(<<-CODE)
      unless defined?(#{error_module})
        module #{error_module}; end
      end

      module TagfulMethods
        #{visibility}
        def #{method_id}(*args)
          super
        rescue => e
          e.extend(#{error_module}) and raise
        end
      end

      prepend(TagfulMethods)
    CODE
  end
  method_id
end

#tagful_with(error_module_or_class) ⇒ Object 



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# File 'lib/tagful.rb', line 11

def tagful_with(error_module_or_class)
  @tagful_error_module_or_class = error_module_or_class
end