private Class<?> type;

protected PyObject __self__ = Py.None;

public PyBuiltinMethodSet(String name, int index, int minargs, int maxargs, String doc,

Class<?> type) {

super(name, index, minargs, maxargs, doc);

this.type = type;

}

@Override

public PyObject __get__(PyObject obj, PyObject type) {

if (obj != null) {

if (this.type.isAssignableFrom(obj.getClass())) {

return bind(obj);

} else {

throw Py.TypeError(String.format("descriptor '%s' for '%s' objects doesn't apply "

+ "to '%s' object", info.getName(),

PyType.fromClass(this.type), obj.getType()));

}

}

return this;

}

@Override

public PyBuiltinCallable bind(PyObject bindTo) {

if (__self__ != Py.None) {

return this;

}

PyBuiltinMethodSet bindable;

try {

bindable = (PyBuiltinMethodSet)clone();

} catch (CloneNotSupportedException e) {

throw new RuntimeException("Didn't expect PyBuiltinMethodSet to throw "

+ "CloneNotSupported since it implements Cloneable", e);

}

bindable.__self__ = bindTo;

return bindable;

}

@Override

public PyObject getSelf() {

return __self__;

}

@Override

public boolean implementsDescrGet() {

return true;

}

@Override

public String toString() {

return String.format("<built-in method %s>", info.getName());

}

/* Traverseproc implementation */

@Override

public int traverse(Visitproc visit, Object arg) {

return visit.visit(__self__, arg);

}

@Override

public boolean refersDirectlyTo(PyObject ob) {

return ob == __self__;

}