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refactor: registry pattern for jolt-hash + jolt-class (jolt-lmot)

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Replace the set!-capture-and-rebind chains extending jolt-hash (3 sites: inst-time/
host-table/records) and jolt-class (3 sites: bigdec/natives-queue/host-table) with a
register-hash-arm! / register-class-arm! registry (the pattern already used by
register-str-render!). The base dispatcher walks its arms — disjoint types, so order
is immaterial — then falls to the base cases. The entry is stable, so the per-site
(def-var! "clojure.core" "class" …) re-points are gone.

Behaviour-preserving (runtime .ss, no re-mint): jinst hash, bigdec/queue/record
class, record hash, and a sorted-map hashing as its plain map all verified; make test
green, 0 new corpus divergences. First two of six dispatchers; get/=/pr-str follow.
This commit is contained in:
Yogthos 2026-06-23 23:01:30 -04:00
parent bcd752717e
commit d168d1195b
7 changed files with 34 additions and 19 deletions
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3
host/chez/inst-time.ss
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@ -247,8 +247,7 @@
((jinst? b) #f)
(else (%it-=2 a b)))))
(define %it-hash jolt-hash)
(set! jolt-hash (lambda (x) (if (jinst? x) (jolt-hash (jinst-ms x)) (%it-hash x))))
(register-hash-arm! jinst? (lambda (x) (jolt-hash (jinst-ms x))))
(define (inst-pr i) (string-append "#inst \"" (inst-rfc3339 i) "\""))
(define %it-pr-str jolt-pr-str)