Class: Skit::Serialization::Processor::Nilable

Inherits:
Base
  • Object
show all
Extended by:
T::Sig
Defined in:
lib/skit/serialization/processor/nilable.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(type_spec, registry:) ⇒ Nilable

Returns a new instance of Nilable.



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# File 'lib/skit/serialization/processor/nilable.rb', line 16

def initialize(type_spec, registry:)
  super
  unless self.class.nilable_type?(type_spec)
    raise ArgumentError,
          "Expected nilable type, got #{type_spec.class}"
  end

  @inner_type = T.let(extract_inner_type(type_spec), T.untyped)
end

Class Method Details

.handles?(type_spec) ⇒ Boolean

Returns:



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# File 'lib/skit/serialization/processor/nilable.rb', line 11

def self.handles?(type_spec)
  nilable_type?(type_spec)
end

.nilable_type?(type_object) ⇒ Boolean

Returns:



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# File 'lib/skit/serialization/processor/nilable.rb', line 62

def nilable_type?(type_object)
  return false unless type_object.is_a?(T::Types::Union)

  types = type_object.types
  has_nil = types.any? { |t| t.is_a?(T::Types::Simple) && t.raw_type == NilClass }
  non_nil_count = types.count { |t| !(t.is_a?(T::Types::Simple) && t.raw_type == NilClass) }

  has_nil && non_nil_count == 1
end

Instance Method Details

#deserialize(value, path: Path.new) ⇒ Object 



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# File 'lib/skit/serialization/processor/nilable.rb', line 35

def deserialize(value, path: Path.new)
  return nil if value.nil?

  processor = @registry.processor_for(@inner_type)
  processor.deserialize(value, path: path)
end

#serialize(value, path: Path.new) ⇒ Object 



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# File 'lib/skit/serialization/processor/nilable.rb', line 27

def serialize(value, path: Path.new)
  return nil if value.nil?

  processor = @registry.processor_for(@inner_type)
  processor.serialize(value, path: path)
end

#traverse(value, path: Path.new, &blk) ⇒ Object 



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# File 'lib/skit/serialization/processor/nilable.rb', line 49

def traverse(value, path: Path.new, &blk)
  super

  return if value.nil?

  processor = @registry.processor_for(@inner_type)
  processor.traverse(value, path: path, &blk)
end