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Contents
module Attributor
class Struct < Attributor::Model
def self.constructable?
true
end
# Construct a new subclass, using attribute_definition to define attributes.
def self.construct(attribute_definition, options = {})
# if we're in a subclass of Struct, but not attribute_definition is provided, we're
# not REALLY trying to define a new struct. more than likely Collection is calling
# construct on us.
unless self == Attributor::Struct || attribute_definition.nil?
raise AttributorException, 'can not construct from already-constructed Struct'
end
# TODO: massage the options here to pull out only the relevant ones
# simply return Struct if we don't specify any sub-attributes....
return self if attribute_definition.nil?
if options[:reference]
options.merge!(options[:reference].options) do |_key, oldval, _newval|
oldval
end
end
::Class.new(self) do
attributes **options, &attribute_definition
end
end
def self.definition
# Could probably do this better, but its use should be memoized in the enclosing Attribute
raise AttributorException, 'Can not use a pure Struct without defining sub-attributes' if self == Attributor::Struct
super
end
# Two structs are equal if their attributes are equal
def ==(other)
return false if other.nil? || !other.respond_to?(:attributes)
attributes == other.attributes
end
end
end
Version data entries
11 entries across 11 versions & 1 rubygems