3 d@s~dZddlmZmZddlZddlmZddlmZej e Z dZ dZ d ZGd d d eZGd d d eZeZdddZdS)z" An attempt at type-safe casting. )getfullargspecgetmroN) FunctionType) HasTraitszZThe '%s' class signature for the '%s' method is different from that of the '%s' interface.zHThe '%s' class does not implement the '%s' method of the '%s' interface.zHThe '%s' class does not implement the %s trait(s) of the '%s' interface.c@seZdZdZdS)InterfaceErrorzM The exception raised if a class does not really implement an interface. N)__name__ __module__ __qualname____doc__r r :/tmp/pip-build-7vycvbft/traits/traits/interface_checker.pyr(src@sPeZdZdZddZddZddZdd Zd d Zd d Z ddZ ddZ dS)InterfaceCheckerz6 Checks that interfaces are actually implemented. c Csxy t|Wntk r&|g}YnXt|trTx@|D]}|j|||s8dSq8Wn x|D]}|j|||sZdSqZWdS)z Checks that the class implements the specified interfaces. 'interfaces' can be a single interface or a list of interfaces. FT)iter TypeError issubclassr_check_has_traits_class_check_non_has_traits_class)selfcls interfaces error_mode interfacer r r check_implements3s        z!InterfaceChecker.check_implementscCs|j|||o|j|||S)zB Checks that a 'HasTraits' class implements an interface. ) _check_traits_check_methods)rrrrr r r rRs z(InterfaceChecker._check_has_traits_classcCs|j|||S)zF Checks that a non-'HasTraits' class implements an interface. )r)rrrrr r r rYsz,InterfaceChecker._check_non_has_traits_classc Cs|j|}|j|}xx|D]p}||krH|jt|j|||j|f|St||}t||}||kr|jt|j|||j|f|SqWdS)zE Checks that a class implements the methods on an interface. T)_get_public_methods _handle_errorMISSING_METHOD _class_namer BAD_SIGNATURE) rrrrZ cls_methodsZinterface_methodsnameZ cls_argspecZinterface_argspecr r r r^s(        zInterfaceChecker._check_methodscCs\t|jjt|j}t|dkrX|jt|j|tt|dd|j|f|SdS)zD Checks that a class implements the traits on an interface. rrT) setZ class_traits differencelenr MISSING_TRAITrreprlist)rrrrmissingr r r rs   zInterfaceChecker._check_traitscCsdi}xZt|D]N}|tkrPx>|jjD]0\}}|jd r(t|tkr(||kr(|||<q(WqW|S)z Returns all public methods on a class. Returns a dictionary containing all public methods keyed by name. _)rr__dict__items startswithtyper)rrZpublic_methodscr!valuer r r rs  z$InterfaceChecker._get_public_methodscCs|jS)N)r)rrr r r rszInterfaceChecker._class_namecCs&|dkrt||dkr"tj|dS)NrF)rloggerwarning)rmsgrr r r rs  zInterfaceChecker._handle_errorN) rr r r rrrrrrrrr r r r r/s#rcCstj|||S)z Checks that the class implements the specified interfaces. 'interfaces' can be a single interface or a list of interfaces. )checkerr)rrrr r r rsr)r)r inspectrrloggingtypesrZ has_traitsr getLoggerrr1r rr& Exceptionrrr4rr r r r  s