cT PdZdZGddeZdededefdZd deded edd fd Zy ) zBases class for interfaces to provide 'light' interface handling. TODO: _ implements a check method which check that an object implements the interface _ Attribute objects This module requires at least python 2.2 zrestructuredtext enc*eZdZdZededefdZy) InterfacezBase class for interfaces.instancereturnct||S)N) implements)clsrs :/usr/lib/python3/dist-packages/logilab/common/interface.pyis_implemented_byzInterface.is_implemented_by s(C((N)__name__ __module__ __qualname____doc__ classmethodtypeboolr r r rrs%$))$))r robj interfacerczt|dd}t|ttfs|f}|D]}t ||syy)z^Return true if the give object (maybe an instance or class) implements the interface. __implements__rTF)getattr isinstancelisttuple issubclass)rr kimplementsimplementedinterfaces r rr%sK#/4K kD%= 1"n + *I 6 r klass_recursNc`t||se |j}t|}t|}|j ||||_|jD]}t||dy|r$|jD]}t||dyy#t$r t }g}Y|wxYw)zAdd interface to klass'__implements__ if not already implemented in. If klass is subclassed, ensure subclasses __implements__ it as well. NOTE: klass should be e new class. T)r N) rrrrAttributeErrorrappend__subclasses__extend)rrr rkimplementsklasssubklasss r r%r%2s eY ' ..K#K0 {+K 9%/ <,,. 6H 8Y 5 6 ,,. 6H 8Y 5 6  $ K s"BB-,B-)F)r __docformat__objectrrrrr%rr r r*sX$& )) D T d 6$646$646r