Method: Puppet::Pops::Types::PObjectType#parameter_info

Defined in:
lib/puppet/pops/types/p_object_type.rb

#parameter_info(impl_class) ⇒ (Array<String>, Array<PAnyType>, Integer)

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns array of parameter names, array of parameter types, and a count reflecting the required number of parameters.

Returns:

  • ((Array<String>, Array<PAnyType>, Integer)) —

    array of parameter names, array of parameter types, and a count reflecting the required number of parameters



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# File 'lib/puppet/pops/types/p_object_type.rb', line 610

def parameter_info(impl_class)
  # Create a types and a names array where optional entries ends up last
  @parameter_info ||= {}
  pic = @parameter_info[impl_class]
  return pic if pic

  opt_types = []
  opt_names = []
  non_opt_types = []
  non_opt_names = []
  init_hash_type.elements.each do |se|
    if se.key_type.is_a?(POptionalType)
      opt_names << se.name
      opt_types << se.value_type
    else
      non_opt_names << se.name
      non_opt_types << se.value_type
    end
  end
  param_names = non_opt_names + opt_names
  param_types = non_opt_types + opt_types
  param_count = param_names.size

  init = impl_class.respond_to?(:from_asserted_args) ? impl_class.method(:from_asserted_args) : impl_class.instance_method(:initialize)
  init_non_opt_count = 0
  init_param_names = init.parameters.map do |p|
    init_non_opt_count += 1 if :req == p[0]
    n = p[1].to_s
    r = RubyGenerator.unprotect_reserved_name(n)
    unless r.equal?(n)
      # assert that the protected name wasn't a real name (names can start with underscore)
      n = r unless param_names.index(r).nil?
    end
    n
  end

  if init_param_names != param_names
    if init_param_names.size < param_count || init_non_opt_count > param_count
      raise Serialization::SerializationError, "Initializer for class #{impl_class.name} does not match the attributes of #{name}"
    end

    init_param_names = init_param_names[0, param_count] if init_param_names.size > param_count
    unless init_param_names == param_names
      # Reorder needed to match initialize method arguments
      new_param_types = []
      init_param_names.each do |ip|
        index = param_names.index(ip)
        if index.nil?
          raise Serialization::SerializationError,
                "Initializer for class #{impl_class.name} parameter '#{ip}' does not match any of the attributes of type #{name}"
        end
        new_param_types << param_types[index]
      end
      param_names = init_param_names
      param_types = new_param_types
    end
  end

  pic = [param_names.freeze, param_types.freeze, non_opt_types.size].freeze
  @parameter_info[impl_class] = pic
  pic
end