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Chez Phase 0c + 0a hardening: collections decision + value-model fixes

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0c: persistent HAMT on Chez is ~41x faster than Janet's HAMT on the collections
map-churn (258.6 -> 6.3 ms), ~15x off mutable-native (inherent persistence cost).
Decision: self-host the persistent collections in Clojure; substrate is not the
bottleneck. See docs/chez-phase0-results.md.

0a hardening: NUL-separated keyword intern key (no ns/name collision), non-finite
-safe jolt-hash. 37/37.
This commit is contained in:
Yogthos 2026-06-17 13:10:19 -04:00
parent c9316dd372
commit b3d0a91e3e
4 changed files with 183 additions and 2 deletions
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7
test/chez/values-test.ss
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@ -56,5 +56,12 @@
(ok "hash 1 != 1.0" (not (= (jolt-hash 1) (jolt-hash 1.0))))
(ok "hash str stable" (= (jolt-hash "abc") (jolt-hash "abc")))
;; regression: keyword intern key must not collide across ns/name boundary
(ok "kw no boundary collide" (not (eq? (keyword "a" "b/c") (keyword "a/b" "c"))))
;; regression: jolt-hash must not throw on non-finite floats
(ok "hash +inf ok" (number? (jolt-hash +inf.0)))
(ok "hash +nan ok" (number? (jolt-hash +nan.0)))
(ok "hash inf != exact" (not (= (jolt-hash +inf.0) (jolt-hash 0))))
(printf "values-test: ~a/~a passed\n" (- total fails) total)
(exit (if (> fails 0) 1 0))