B þ¦†\® ã@sDdZddlmZddlmZe e¡Zd dd„Zdd„Zd d „Z d S) a The inspection module provides the :func:`.inspect` function, which delivers runtime information about a wide variety of SQLAlchemy objects, both within the Core as well as the ORM. The :func:`.inspect` function is the entry point to SQLAlchemy's public API for viewing the configuration and construction of in-memory objects. Depending on the type of object passed to :func:`.inspect`, the return value will either be a related object which provides a known interface, or in many cases it will return the object itself. The rationale for :func:`.inspect` is twofold. One is that it replaces the need to be aware of a large variety of "information getting" functions in SQLAlchemy, such as :meth:`.Inspector.from_engine`, :func:`.orm.attributes.instance_state`, :func:`.orm.class_mapper`, and others. The other is that the return value of :func:`.inspect` is guaranteed to obey a documented API, thus allowing third party tools which build on top of SQLAlchemy configurations to be constructed in a forwards-compatible way. é)Úexc)ÚutilTcCstt|ƒ}xD|jD]2}|tkrt|}|dkr0|S||ƒ}|dk rPqWd}}|rp|dksb|dkrpt d|¡‚|S)a¤Produce an inspection object for the given target. The returned value in some cases may be the same object as the one given, such as if a :class:`.Mapper` object is passed. In other cases, it will be an instance of the registered inspection type for the given object, such as if an :class:`.engine.Engine` is passed, an :class:`.Inspector` object is returned. :param subject: the subject to be inspected. :param raiseerr: When ``True``, if the given subject does not correspond to a known SQLAlchemy inspected type, :class:`sqlalchemy.exc.NoInspectionAvailable` is raised. If ``False``, ``None`` is returned. TNz7No inspection system is available for object of type %s)ÚtypeÚ__mro__Ú _registrarsrZNoInspectionAvailable)ZsubjectZraiseerrÚtype_ÚclsZregZret©r ú4lib/python3.7/site-packages/sqlalchemy/inspection.pyÚinspect&s r cs‡fdd„}|S)Ncs.x(ˆD] }|tkrtd|ƒ‚|t|<qW|S)NzType %s is already registered)rÚAssertionError)Z fn_or_clsr)Útypesr r ÚdecorateNs    z_inspects..decorater )r rr )r r Ú _inspectsMs rcCst|ƒdƒ|S)NT)r)rr r r Ú_self_inspectsZs rN)T) Ú__doc__ÚrrÚ defaultdictÚlistrr rrr r r r Ús     '