This module provides an internal implementation to track descendants which is faster than iterating through ObjectSpace.
Methods
Class Public methods
clear()
Source:
# File activesupport/lib/active_support/descendants_tracker.rb, line 20
def clear
if defined? ActiveSupport::Dependencies
@@direct_descendants.each do |klass, descendants|
if ActiveSupport::Dependencies.autoloaded?(klass)
@@direct_descendants.delete(klass)
else
descendants.reject! { |v| ActiveSupport::Dependencies.autoloaded?(v) }
end
end
else
@@direct_descendants.clear
end
end
descendants(klass)
Source:
# File activesupport/lib/active_support/descendants_tracker.rb, line 14
def descendants(klass)
arr = []
accumulate_descendants(klass, arr)
arr
end
direct_descendants(klass)
Source:
# File activesupport/lib/active_support/descendants_tracker.rb, line 10
def direct_descendants(klass)
@@direct_descendants[klass] || []
end
store_inherited(klass, descendant)
This is the only method that is not thread safe, but is only ever called during the eager loading phase.
Source:
# File activesupport/lib/active_support/descendants_tracker.rb, line 36
def store_inherited(klass, descendant)
(@@direct_descendants[klass] ||= []) << descendant
end
Instance Public methods
descendants()
Source:
# File activesupport/lib/active_support/descendants_tracker.rb, line 58
def descendants
DescendantsTracker.descendants(self)
end
direct_descendants()
Source:
# File activesupport/lib/active_support/descendants_tracker.rb, line 54
def direct_descendants
DescendantsTracker.direct_descendants(self)
end
inherited(base)
Source:
# File activesupport/lib/active_support/descendants_tracker.rb, line 49
def inherited(base)
DescendantsTracker.store_inherited(self, base)
super
end