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author | Gonçalo Silva <goncalossilva@gmail.com> | 2010-07-10 17:36:10 +0100 |
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committer | Gonçalo Silva <goncalossilva@gmail.com> | 2010-07-10 17:36:10 +0100 |
commit | cd2bbed9846d84a1230a1b9e52843eedca17b28d (patch) | |
tree | 5214b7855f3d102e4c22239b9d62bc5717cb3547 /activesupport/lib/active_support/core_ext/class/subclasses.rb | |
parent | d2c633ba0bfb7baacdee89a46d7d036d24c68817 (diff) | |
parent | 80e47d7b88dcc732ebeb5290faab6e529829dac6 (diff) | |
download | rails-cd2bbed9846d84a1230a1b9e52843eedca17b28d.tar.gz rails-cd2bbed9846d84a1230a1b9e52843eedca17b28d.tar.bz2 rails-cd2bbed9846d84a1230a1b9e52843eedca17b28d.zip |
Merge branch 'master' of http://github.com/rails/rails
Diffstat (limited to 'activesupport/lib/active_support/core_ext/class/subclasses.rb')
-rw-r--r-- | activesupport/lib/active_support/core_ext/class/subclasses.rb | 57 |
1 files changed, 26 insertions, 31 deletions
diff --git a/activesupport/lib/active_support/core_ext/class/subclasses.rb b/activesupport/lib/active_support/core_ext/class/subclasses.rb index 7d58a8b56a..3e5d1a2a42 100644 --- a/activesupport/lib/active_support/core_ext/class/subclasses.rb +++ b/activesupport/lib/active_support/core_ext/class/subclasses.rb @@ -2,54 +2,49 @@ require 'active_support/core_ext/module/anonymous' require 'active_support/core_ext/module/reachable' class Class #:nodoc: - # Returns an array with the names of the subclasses of +self+ as strings. - # - # Integer.subclasses # => ["Bignum", "Fixnum"] - def subclasses - Class.subclasses_of(self).map { |o| o.to_s } - end - # Rubinius if defined?(Class.__subclasses__) + alias :subclasses :__subclasses__ + def descendants - subclasses = [] - __subclasses__.each {|k| subclasses << k; subclasses.concat k.descendants } - subclasses + descendants = [] + __subclasses__.each do |k| + descendants << k + descendants.concat k.descendants + end + descendants end - else - # MRI + else # MRI begin ObjectSpace.each_object(Class.new) {} def descendants - subclasses = [] + descendants = [] ObjectSpace.each_object(class << self; self; end) do |k| - subclasses << k unless k == self + descendants.unshift k unless k == self end - subclasses + descendants end - # JRuby - rescue StandardError + rescue StandardError # JRuby def descendants - subclasses = [] + descendants = [] ObjectSpace.each_object(Class) do |k| - subclasses << k if k < self + descendants.unshift k if k < self end - subclasses.uniq! - subclasses + descendants.uniq! + descendants end end - end - # Exclude this class unless it's a subclass of our supers and is defined. - # We check defined? in case we find a removed class that has yet to be - # garbage collected. This also fails for anonymous classes -- please - # submit a patch if you have a workaround. - def self.subclasses_of(*superclasses) #:nodoc: - subclasses = [] - superclasses.each do |klass| - subclasses.concat klass.descendants.select {|k| k.anonymous? || k.reachable?} + # 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 - subclasses end end |