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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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4
host/chez/run-corpus.ss
View file

@ -11,7 +11,7 @@
;; reset between cases so there is no leakage — same isolation a fresh process gives.
;;
;; chez --script host/chez/run-corpus.ss
;; JOLT_CHEZ_ZJ_FLOOR=N override the regression floor (default 2693)
;; JOLT_CHEZ_ZJ_FLOOR=N override the regression floor (default 2694)
;; JOLT_CORPUS_LIMIT=N every-Nth stride (fast iteration; floor drops to 0)
;; JOLT_DUMP_CRASH_LABELS=1 list crash + allowlisted labels
(import (chezscheme))
@ -203,7 +203,7 @@
;; Regression floor: fail on any NEW divergence or if pass drops below the floor.
(define base-floor (let ((s (getenv "JOLT_CHEZ_ZJ_FLOOR")))
(if s (string->number s) 2693)))
(if s (string->number s) 2694)))
(define floor (if limit 0 base-floor))
(when (or (> (length diverged) 0) (< pass floor))
(printf "REGRESSION: pass ~a < floor ~a or ~a new divergence(s)\n"

10
host/chez/seq.ss
View file

@ -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)))