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reduce dispatches to a reify's IReduceInit reduce method (jolt-z1zu)

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(reduce f init (reify clojure.lang.IReduceInit (reduce [_ f i] ...))) tried to
seq the reify and threw 'not seqable'. When the coll is a reify carrying a reduce
method, drive the reduction through it. Corpus 2693->2694.
This commit is contained in:
Yogthos 2026-06-21 17:46:20 -04:00
parent 31a453d492
commit f15a4e7747
2 changed files with 11 additions and 3 deletions
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10
host/chez/seq.ss
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@ -178,7 +178,15 @@
((f coll) (let ((s (jolt-seq coll)))
(if (jolt-nil? s) (jolt-invoke f) ; (reduce f []) -> (f)
(reduce-seq f (seq-first s) (jolt-seq (seq-more s))))))
((f init coll) (reduce-seq f init (jolt-seq coll)))))
((f init coll)
;; IReduceInit: a reify/record with its own `reduce` method drives the
;; reduction (reduce f init (reify clojure.lang.IReduceInit (reduce [_ f i] ...))).
(cond
((and (jreify? coll) (reified-methods coll)
(hashtable-ref (reified-methods coll) "reduce" #f))
=> (lambda (m) (let ((r (jolt-invoke m coll f init)))
(if (jolt-reduced? r) (jolt-reduced-val r) r))))
(else (reduce-seq f init (jolt-seq coll)))))))
(define (jolt-into to from) (reduce-seq (lambda (acc x) (jolt-conj1 acc x)) to (jolt-seq from)))