Sha256: 2c812cc5b2b23c855aa1f2fded53243138993e9f87d91c8aa3c2c51e2cc3630b
Contents?: true
Size: 1.06 KB
Versions: 7
Compression:
Stored size: 1.06 KB
Contents
require 'active_support/core_ext/module/anonymous'
require 'active_support/core_ext/module/reachable'
class Class
begin
# Test if this Ruby supports each_object against singleton_class
ObjectSpace.each_object(Numeric.singleton_class) {}
def descendants # :nodoc:
descendants = []
ObjectSpace.each_object(singleton_class) do |k|
descendants.unshift k unless k == self
end
descendants
end
rescue StandardError # JRuby 9.0.4.0 and earlier
def descendants # :nodoc:
descendants = []
ObjectSpace.each_object(Class) do |k|
descendants.unshift k if k < self
end
descendants.uniq!
descendants
end
end
# Returns an array with the direct children of +self+.
#
# Integer.subclasses # => [Fixnum, Bignum]
#
# class Foo; end
# class Bar < Foo; end
# class Baz < Bar; end
#
# Foo.subclasses # => [Bar]
def subclasses
subclasses, chain = [], descendants
chain.each do |k|
subclasses << k unless chain.any? { |c| c > k }
end
subclasses
end
end
Version data entries
7 entries across 7 versions & 1 rubygems