3 ˆdÈã@s@dZddlmZiaGdd„deƒZGdd„deƒZdd„Zd S) a! Defines the TraitFactory class and related objects. A TraitFactory is a class which allows deferred, but cached, creation of CTrait instances. The TraitFactory API provides the ``as_ctrait`` method so that the trait conversion functions can generate CTrait instances in a standard way. é)Ú TraitErrorc@s*eZdZdZd dd„Zdd„Zdd„ZdS) Ú TraitFactoryzÛ A factory class that allows deferred creation of traits Traits created by TraitFactory instances are cached, and the cached trait is returned by all subsequent calls to the same TraitFactory instance. NcCs|dk r||_|j|_dS)N)Úmaker_functionÚ__doc__)Úselfr©rú6/tmp/pip-build-7vycvbft/traits/traits/trait_factory.pyÚ__init__!szTraitFactory.__init__cOs |j||ŽS)z Creates a CTrait instance. )r)rÚargsÚmetadatarrrÚ__call__&szTraitFactory.__call__cCst|ƒS)z+ Get the CTrait instance from the factory. )Ú trait_factory)rrrrÚ as_ctrait*szTraitFactory.as_ctrait)N)Ú__name__Ú __module__Ú __qualname__rr r rrrrrrs rc@s eZdZdZdd„Zdd„ZdS)ÚTraitImportErrorzÚ TraitFactory subclass that always fails when creating a CTrait This class is designed for uses such as deferring import problems until encountering code that actually tries to use the unimportable trait. cCs ||_dS)N)Úmessage)rrrrrr 6szTraitImportError.__init__cOst|jƒ‚dS)z6 Raises an TraitError with the message as is payload. N)rr)rr r rrrr 9szTraitImportError.__call__N)rrrrr r rrrrr/srcCs"t|ƒ}|tkr|ƒt|<t|S)z6 Returns a trait created from a TraitFactory instance )ÚidÚ_trait_factory_instances)ZtraitÚtidrrrr >s r N)rZ trait_errorsrrÚobjectrrr rrrrÚs