Sha256: c2e255e529c6d5e90a7fa9dc920cba8bc619d166a9588007ad6572412c7f54d8
Contents?: true
Size: 1.08 KB
Versions: 20
Compression:
Stored size: 1.08 KB
Contents
# frozen_string_literal: true
require "active_support/ruby_features"
require "active_support/descendants_tracker"
class Class
if ActiveSupport::RubyFeatures::CLASS_SUBCLASSES
# Returns an array with all classes that are < than its receiver.
#
# class C; end
# C.descendants # => []
#
# class B < C; end
# C.descendants # => [B]
#
# class A < B; end
# C.descendants # => [B, A]
#
# class D < C; end
# C.descendants # => [B, A, D]
def descendants
subclasses.concat(subclasses.flat_map(&:descendants))
end
else
def descendants
ObjectSpace.each_object(singleton_class).reject do |k|
k.singleton_class? || k == self
end
end
# Returns an array with the direct children of +self+.
#
# class Foo; end
# class Bar < Foo; end
# class Baz < Bar; end
#
# Foo.subclasses # => [Bar]
def subclasses
descendants.select { |descendant| descendant.superclass == self }
end
end
prepend ActiveSupport::DescendantsTracker::ReloadedClassesFiltering
end
Version data entries
20 entries across 20 versions & 6 rubygems