Class: Primalize::Single::Optional

Inherits:
Object
  • Object
show all
Includes:
Type
Defined in:
lib/primalize/single.rb

Constant Summary

Constants included from Type

Type::DEFAULT_COERCION

Instance Method Summary collapse

Constructor Details

#initialize(types, &coercion) ⇒ Optional

Returns a new instance of Optional.



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# File 'lib/primalize/single.rb', line 369

def initialize types, &coercion
  @types = types
  @coercion = coercion
end

Instance Method Details

#===(value) ⇒ Object 



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# File 'lib/primalize/single.rb', line 374

def === value
  value.nil? || @types.any? { |type| type === value }
end

#coerce(value) ⇒ Object 



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# File 'lib/primalize/single.rb', line 382

def coerce value
  if value.nil?
    super
  else
    type = @types.find { |type| type === value }

    if type.respond_to? :coerce
      if @coercion
        @coercion.call(value)
      else
        type.coerce(value)
      end
    else
      value
    end
  end
end

#inspect ⇒ Object 



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# File 'lib/primalize/single.rb', line 378

def inspect
  "optional(#{@types.map(&:inspect).join(', ')})"
end