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require 'active_support/core_ext/object/extending'
require 'active_support/core_ext/module/introspection'
class Class #:nodoc:
# Removes the classes in +klasses+ from their parent module.
#
# Ordinary classes belong to some module via a constant. This method computes
# that constant name from the class name and removes it from the module it
# belongs to.
#
# Object.remove_class(Integer) # => [Integer]
# Integer # => NameError: uninitialized constant Integer
#
# Take into account that in general the class object could be still stored
# somewhere else.
#
# i = Integer # => Integer
# Object.remove_class(Integer) # => [Integer]
# Integer # => NameError: uninitialized constant Integer
# i.subclasses # => ["Bignum", "Fixnum"]
# Fixnum.superclass # => Integer
def remove_class(*klasses)
klasses.flatten.each do |klass|
# Skip this class if there is nothing bound to this name
next unless defined?(klass.name)
basename = klass.to_s.split("::").last
parent = klass.parent
# Skip this class if it does not match the current one bound to this name
next unless parent.const_defined?(basename) && klass = parent.const_get(basename)
parent.instance_eval { remove_const basename } unless parent == klass
end
end
end
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