# frozen_string_literal: true
module Gem
# The Gem::List class is currently unused and will be removed in the next major rubygems version
class List # :nodoc:
include Enumerable
attr_accessor :value, :tail
def initialize(value = nil, tail = nil)
@value = value
@tail = tail
end
def each
n = self
while n
yield n.value
n = n.tail
end
end
def to_a
super.reverse
end
def prepend(value)
List.new value, self
end
def pretty_print(q) # :nodoc:
q.pp to_a
end
def self.prepend(list, value)
return List.new(value) unless list
List.new value, list
end
end
deprecate_constant :List
end
