Method: Puppet::Functions::DispatcherBuilder#block_param

Defined in:
lib/puppet/functions.rb

#block_param(*type_and_name) ⇒ Object Also known as: required_block_param

Defines one required block parameter that may appear last. If type and name is missing the default type is “Callable”, and the name is “block”. If only one parameter is given, then that is the name and the type is “Callable”.



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# File 'lib/puppet/functions.rb', line 476

def block_param(*type_and_name)
  case type_and_name.size
  when 0
    type = @all_callables
    name = :block
  when 1
    type = @all_callables
    name = type_and_name[0]
  when 2
    type, name = type_and_name
    type = Puppet::Pops::Types::TypeParser.singleton.parse(type, loader) unless type.is_a?(Puppet::Pops::Types::PAnyType)
  else
    raise ArgumentError, _("block_param accepts max 2 arguments (type, name), got %{size}.") % { size: type_and_name.size }
  end

  unless Puppet::Pops::Types::TypeCalculator.is_kind_of_callable?(type, false)
    raise ArgumentError, _("Expected PCallableType or PVariantType thereof, got %{type_class}") % { type_class: type.class }
  end

  unless name.is_a?(Symbol)
    raise ArgumentError, _("Expected block_param name to be a Symbol, got %{name_class}") % { name_class: name.class }
  end

  if @block_type.nil?
    @block_type = type
    @block_name = name
  else
    raise ArgumentError, _('Attempt to redefine block')
  end
end