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class Object
def remove_subclasses_of(*superclasses) #:nodoc:
Class.remove_class(*subclasses_of(*superclasses))
end
def subclasses_of(*superclasses) #:nodoc:
subclasses = []
# 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.
ObjectSpace.each_object(Class) do |k|
if superclasses.any? { |superclass| k < superclass } &&
(k.name.blank? || eval("defined?(::#{k}) && ::#{k}.object_id == k.object_id"))
subclasses << k
end
end
subclasses
end
def extended_by #:nodoc:
ancestors = class << self; ancestors end
ancestors.select { |mod| mod.class == Module } - [ Object, Kernel ]
end
def copy_instance_variables_from(object, exclude = []) #:nodoc:
exclude += object.protected_instance_variables if object.respond_to? :protected_instance_variables
instance_variables = object.instance_variables - exclude.map { |name| name.to_s }
instance_variables.each { |name| instance_variable_set(name, object.instance_variable_get(name)) }
end
def extend_with_included_modules_from(object) #:nodoc:
object.extended_by.each { |mod| extend mod }
end
def instance_values #:nodoc:
instance_variables.inject({}) do |values, name|
values[name[1..-1]] = instance_variable_get(name)
values
end
end
unless defined? instance_exec # 1.9
def instance_exec(*arguments, &block) #:nodoc:
block.bind(self)[*arguments]
end
end
end
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