Class: BarcodeValidation::Digit

Inherits:
Integer
  • Object
show all
Includes:
Mixin::ValueObject
Defined in:
lib/barcodevalidation/digit.rb

Direct Known Subclasses

GTIN::CheckDigit

Constant Summary collapse

INTEGER_CAST_ERRORS = 
[::ArgumentError, ::TypeError].freeze
ArgumentError = 
Error::ArgumentErrorClass.new(self)

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Mixin::ValueObject

#eql?, included, #inspect, #pretty_print

Constructor Details

#initialize(input) ⇒ Digit

Returns a new instance of Digit.



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# File 'lib/barcodevalidation/digit.rb', line 16

def initialize(input)
  value = Integer(input)
  raise ::ArgumentError unless (0..9).cover? value
  super(value)
rescue *INTEGER_CAST_ERRORS
  raise Digit::ArgumentError, input
end

Class Method Details

.memoization_key(input) ⇒ Object

Memoize constructor based on the integer value given



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# File 'lib/barcodevalidation/digit.rb', line 10

def self.memoization_key(input, *)
  Integer(input)
rescue *INTEGER_CAST_ERRORS
  nil # the constructor will raise
end