U )Wjv@sdZddlZddlZddlmZddlmZddlmZddlmZddlm Z ddlm Z dd lm Z dd l m Z dd l mZdd l mZd dgZefZdddZddZdddZddd Zeje_dZddZdS)z!Verify interface implementations N) FunctionType) MethodType)BrokenImplementation)BrokenMethodImplementation)DoesNotImplement)Invalid)MultipleInvalid)Method) fromFunction) fromMethod verifyObject verifyClassFc Cs|dkr|j}n|j}g}|s6||s6|t|||jddD]J\}}zt|||||WqBtk r}z||W5d}~XYqBXqB|rt|dkr|dt|||dS)a Verify that *candidate* might correctly provide *iface*. This involves: - Making sure the candidate claims that it provides the interface using ``iface.providedBy`` (unless *tentative* is `True`, in which case this step is skipped). This means that the candidate's class declares that it `implements ` the interface, or the candidate itself declares that it `provides ` the interface - Making sure the candidate defines all the necessary methods - Making sure the methods have the correct signature (to the extent possible) - Making sure the candidate defines all the necessary attributes :return bool: Returns a true value if everything that could be checked passed. :raises zope.interface.Invalid: If any of the previous conditions does not hold. .. versionchanged:: 5.0 If multiple methods or attributes are invalid, all such errors are collected and reported. Previously, only the first error was reported. As a special case, if only one such error is present, it is raised alone, like before. cT)allNr) Z implementedByZ providedByappendrZnamesAndDescriptions_verify_elementrlenr) iface candidate tentativevtypetesterZexcsnamedescer`c:\users\psant\downloads\hotstarbackend\school\venv38\Lib\site-packages\zope/interface/verify.py_verify)s !   rcCs2zt||}Wn8tk rFt|ts6|dkr6YdSt|||YnXt|tsVdSt|sjt|rndSt|trt|t r|dkrt |||dd}nt |||d}nZt|t rt |j tkrt |||}n4t|tr|dkrdSt|st|d|||dSt||}|r.t|||||dS)Nrr)rZimlevel)rzimplementation is not a method)getattrAttributeError isinstancer rinspectismethoddescriptor isbuiltinrtyper MethodTypes__func__r propertycallabler _incompatZgetSignatureInfo)rrrrrattrmethZmessrrrrasB      rcCst|||ddS)zF Verify that the *candidate* might correctly provide *iface*. rrrrrrrrrr scCst|||ddS)Nor-r.r/rrrr sz*implementation requires too many argumentscCslt|dt|dkrtSt|dt|dkr@|ds@dS|drT|dsTdS|drh|dshdSdS)Nrequired positionalvarargsz-implementation doesn't allow enough argumentskwargsz0implementation doesn't support keyword argumentsz1implementation doesn't support variable arguments)r _MSG_TOO_MANY)r1Z implementedrrrr*sr*)FN)F)F)__doc__r"systypesrrZzope.interface.exceptionsrrrrrZzope.interface.interfacer r r __all__r&rrr r r5r*rrrrs.           8N