class Object def remove_subclasses_of(*superclasses) #:nodoc: Class.remove_class(*subclasses_of(*superclasses)) end def subclasses_of(*superclasses) #:nodoc: subclasses = [] ObjectSpace.each_object(Class) do |k| next unless # Exclude this class unless superclasses.any? { |superclass| k < superclass } && # It *is* a subclass of our supers eval("defined?(::#{k}) && ::#{k}.object_id == k.object_id") # It *is* defined # Note that we check defined? in case we find a removed class that has # yet to be garbage collected. subclasses << k 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