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Contents
require_relative 'node_base'
require 'typesafe_enum'
module XML
module MappingExtensions
# Base class for single-attribute nodes with values that extend `TypesafeEnum::Base`
#
# Usage:
# # for node class MyEnum
# typesafe_enum_node :my_enum, '@my_enum', default_value: nil, class: MyEnum
class TypesafeEnumNode < NodeBase
# Creates a new {TypesafeEnumNode}
# @param :class the enum class
def initialize(*args)
super
@enum_class = @options[:class]
fail ArgumentError, "No :class found for TypesafeEnumNode #{@attrname} of #{@owner}" unless @enum_class
end
# Converts an enum value or value string to an enum instance
# @param xml_text the enum value or value string
# @return [TypesafeEnum::Base] an instance of the enum class declared in the initializer
def to_value(xml_text)
enum_instance = @enum_class.find_by_value(xml_text)
enum_instance = @enum_class.find_by_value_str(xml_text) unless enum_instance
enum_instance
end
# Converts an enum value or value string to an enum instance
# @param enum_instance [TypesafeEnum::Base] an instance of the enum class declared in the initializer
# @return [String] the enum value as a string
def to_xml_text(enum_instance)
enum_instance.value.to_s if enum_instance
end
end
::XML::Mapping.add_node_class TypesafeEnumNode
end
end
Version data entries
12 entries across 12 versions & 1 rubygems