On Mon, Dec 8, 2008 at 9:05 AM, Rich Hickey <[EMAIL PROTECTED]> wrote:
>
> On Dec 7, 9:01 am, Mibu <[EMAIL PROTECTED]> wrote:
>> Is it possible to remove the asserts in derive that restrict the
>> parent and child to namespace-qualified names?
>>
>> It would be much more useful if the asserts are moved to the global-
>> hierarchy case ([child parent]) and the "private" hierarchies ([h
>> child parent]) can do as they wish.
>
> Added to todo[1] - patch welcome
I believe this should do it.
- J.
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Index: src/clj/clojure/core.clj
===================================================================
--- src/clj/clojure/core.clj (revision 1147)
+++ src/clj/clojure/core.clj (working copy)
@@ -3045,13 +3045,14 @@
child can be either a namespace-qualified symbol or keyword or a
class. h must be a hierarchy obtained from make-hierarchy, if not
supplied defaults to, and modifies, the global hierarchy."
- ([tag parent] (alter-var-root #'global-hierarchy derive tag parent) nil)
- ([h tag parent]
+ ([tag parent]
(assert (not= tag parent))
(assert (or (class? tag) (and (instance? clojure.lang.Named tag) (namespace tag))))
(assert (instance? clojure.lang.Named parent))
(assert (namespace parent))
+ (alter-var-root #'global-hierarchy derive tag parent) nil)
+ ([h tag parent]
(let [tp (:parents h)
td (:descendants h)
ta (:ancestors h)
