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type returns the JVM class (Clojure semantics) (#244)

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(type x) was jolt's internal taxonomy keyword (:string/:set/:jolt/inst), which
breaks any library dispatching a multimethod on [(type a) (type b)] against
java/clojure.lang classes (e.g. clojure.tools.logging.test's matchers). Make the
PUBLIC clojure.core/type Clojure's (or (:type meta) (class x)).

The taxonomy keyword stays the core model: natives-meta.ss keeps jolt-type and
exposes it as __type-tag, which print-method/print-dup dispatch on (so #uuid/#regex/
records still print). The JVM mapping lives in the java host layer — host-class.ss
defines the public type next to (class …), and a jinst now reports java.util.Date
(was :jolt/inst). So the core emits the taxonomy and the java layer remaps it in one
place. unit.edn's type suite updated to the class names. make test green.

Co-authored-by: Yogthos <yogthos@gmail.com>
This commit is contained in:
Dmitri Sotnikov 2026-06-26 21:14:06 +00:00 • committed by GitHub
parent 6c03dffd00
commit 687dc60af6
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host/chez/natives-meta.ss
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@ -132,4 +132,10 @@
((procedure? x) ty-fn)
(else ty-object))))
;; jolt-type is the keyword TAXONOMY (:string/:set/:jolt/inst/…) — jolt's native
;; value model, with no JVM in it. print-method/print-dup dispatch on it (via
;; __type-tag). The PUBLIC clojure.core/type is Clojure's (or (:type meta) (class
;; x)) — a JVM class — but that mapping belongs to the java host layer (host-class.ss
;; rebinds `type` next to `class`), so this core layer stays JVM-free.
(def-var! "clojure.core" "__type-tag" jolt-type)
(def-var! "clojure.core" "type" jolt-type)