diff options
| -rw-r--r-- | activesupport/lib/active_support/core_ext/class/subclasses.rb | 54 |
1 files changed, 20 insertions, 34 deletions
diff --git a/activesupport/lib/active_support/core_ext/class/subclasses.rb b/activesupport/lib/active_support/core_ext/class/subclasses.rb index 3e5d1a2a42..46e9daaa8f 100644 --- a/activesupport/lib/active_support/core_ext/class/subclasses.rb +++ b/activesupport/lib/active_support/core_ext/class/subclasses.rb @@ -2,49 +2,35 @@ require 'active_support/core_ext/module/anonymous' require 'active_support/core_ext/module/reachable' class Class #:nodoc: - # Rubinius - if defined?(Class.__subclasses__) - alias :subclasses :__subclasses__ + begin + ObjectSpace.each_object(Class.new) {} def descendants descendants = [] - __subclasses__.each do |k| - descendants << k - descendants.concat k.descendants + ObjectSpace.each_object(class << self; self; end) do |k| + descendants.unshift k unless k == self end descendants end - else # MRI - begin - ObjectSpace.each_object(Class.new) {} - - def descendants - descendants = [] - ObjectSpace.each_object(class << self; self; end) do |k| - descendants.unshift k unless k == self - end - descendants - end - rescue StandardError # JRuby - def descendants - descendants = [] - ObjectSpace.each_object(Class) do |k| - descendants.unshift k if k < self - end - descendants.uniq! - descendants + rescue StandardError # JRuby + def descendants + 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 # => [Bignum, Fixnum] - def subclasses - subclasses, chain = [], descendants - chain.each do |k| - subclasses << k unless chain.any? { |c| c > k } - end - subclasses + # Returns an array with the direct children of +self+. + # + # Integer.subclasses # => [Bignum, Fixnum] + def subclasses + subclasses, chain = [], descendants + chain.each do |k| + subclasses << k unless chain.any? { |c| c > k } end + subclasses end end |