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Contents
# frozen_string_literal: true
require 'luna_park/errors'
module LunaPark
module Extensions
##
# class-level mixin
#
# @example
# class Account
# extend LunaPark::Extensions::Wrappable
#
# attr_reader :type, :id
#
# def initialize(type:, id:)
# @type, @id = type, id
# end
# end
#
# hash = { type: 'user', id: 42 }
# acccount = Account.new(hash)
#
# Account.new(hash) # => #<Account type='user', id=42>
# Account.new(acccount) # => raise ArgumentError
# Account.wrap(hash) # => #<Account type='user', id=42>
# Account.wrap(acccount) # => #<Account type='user', id=42>
# Account.wrap(nil) # => nil
# Account.wrap(true) # => raise 'Account can not wrap TrueClass'
#
# Account.wrap(account).eql?(account) # => true
module Wrappable
def wrap(input)
case input
when self then input
when Hash then new(input)
when nil then nil
else raise Errors::Unwrapable, "#{self} can not wrap #{input.class}"
end
end
end
end
end
Version data entries
12 entries across 12 versions & 1 rubygems