s eMUdZddlmZddgZddlZddlZejdZgZde d<dd Z Gd dej eej Z Gdde eej eZdS)z,A simple base to create singleton instances.) annotations SingletonSingleInstanceOfNTz$typing.Final[typing.List[Singleton]]__singletons__returnNonecBtD]}|dS)z,Reset all singletons in application at once.N)rreset) singletons Blib/python3.11/site-packages/navigator_updater/utils/singletons.py reset_allrs0$ cheZdZdZdZd dZed dZd dZe j d d Z d d Z d S)rz Container for a singleton instance of some type. Supports lazy initialization as soon as the instance might be required. ) __instancerr cHd|_t|dS)z,Initialize new :class:`~Singleton` instance.N)_Singleton__instancerappendselfs r __init__zSingleton.__init__#s#.2d#####rrcP|j||_|jS)zSingleton instance.)r_preparers r instancezSingleton.instance(s# ? ""mmooDOrcN|jdS|d|_dS)z Reset singleton value. This will trigger repeated initialization of an instance on next :attr:`~Singleton.instance` call. N)r_releasers r r zSingleton.reset/s) ? " F rcdS)Initialize singleton instance.Nrs r rzSingleton._prepare;rcdS)zCDestroy singleton instance when :meth:`~Singleton.reset` is called.Nrrs r rzSingleton._release?r rNrr rr) __name__ __module__ __qualname____doc__ __slots__rpropertyrr abcabstractmethodrrrrr rrs  I$$$$ X     ----RRRRRRr) metaclassc0eZdZdZdZd fd Zd d ZxZS) rzUShortcut for singletons constructed from external functions or instance constructors.) __constructor constructortyping.Callable[[], T]rr cVt||_dS)z3Initialize new :class:`~SingleInstanceOf` instance.N)superr_SingleInstanceOf__constructor)rr/ __class__s r rzSingleInstanceOf.__init__Hs' CNrrc*|S)r)r3rs r rzSingleInstanceOf._prepareMs!!###r)r/r0rr r#)r$r%r&r'r(rr __classcell__)r4s@r rrCsb__"IOOOOOO $$$$$$$$rr")r' __future__r__all__r*typingTypeVarrr__annotations__rGenericABCMetarrrrr r>s322"""""" * + FN38:9999&R&R&R&R&Rq!S[&R&R&R&RR $ $ $ $ $y|V^A%6 $ $ $ $ $r