b7864100cb
The Chez atom record gains watches (an alist of key->fn) and validator slots. swap!/reset! now validate the candidate value before storing and notify watches after, in the seed's order (core_refs.janet) — the watch fn is called (key ref old new). compare-and-set!/swap-vals!/reset-vals! route through reset!/swap! so they validate + notify too. add-watch/remove-watch/set-validator!/get-validator are native here and re-asserted in post-prelude.ss: the clojure.core overlay implements them via jolt.host/ref-put! on (get atom :watches), a Janet-table mutation a Chez atom record can't answer, so its def-var! would otherwise clobber these. set- validator! validates the current value immediately (Clojure throws if already invalid). Parity 2150 -> 2154, 0 new divergences. New test/chez/_atomwatch.janet 10/10. The (class x) native and the clojure.walk port were explored this increment but deferred: class alone makes the String-class-token corpus cases emit-and- run with a wrong value (the bare token doesn't resolve yet) — filed jolt-13zk to land the native together with token resolution; clojure.walk is blocked on list? + map-entry-as-vector (jolt-75sv).
51 lines
2.7 KiB
Text
51 lines
2.7 KiB
Text
# jolt-mn9o — atom watches + validators on Chez. The Chez atom record carries
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# watches (alist) + validator slots; swap!/reset! validate-then-set-then-notify;
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# add-watch/remove-watch/set-validator!/get-validator are native (post-prelude.ss
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# re-asserts them over the overlay's ref-put!-based versions). Oracle = build/jolt.
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#
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# janet test/chez/_atomwatch.janet
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(def jolt-bin (or (os/getenv "JOLT_BIN") "bin/jolt-chez"))
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# [expr throws?] — when throws? the case is expected to exit non-zero on both
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# (the corpus :throws contract; the exception message text may differ).
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(def cases
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[["(let [a (atom 0) seen (atom 0)] (add-watch a :k (fn [k r o n] (reset! seen 1))) (reset! a 5) @seen)" false]
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["(let [a (atom 0) seen (atom 0)] (add-watch a :k (fn [k r o n] (swap! seen inc))) (remove-watch a :k) (reset! a 5) @seen)" false]
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["(let [a (atom 0) log (atom [])] (add-watch a :k (fn [k r o n] (swap! log conj [o n]))) (reset! a 1) (reset! a 2) @log)" false]
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["(let [a (atom 0)] (set-validator! a number?) (reset! a 5) @a)" false]
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["(let [a (atom 5)] (set-validator! a pos?) (swap! a inc) @a)" false]
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["(let [a (atom 0)] (set-validator! a number?) (fn? (get-validator a)))" false]
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["(let [a (atom 0)] (nil? (get-validator a)))" false]
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["(let [a (atom 0)] (set-validator! a pos?) (reset! a -1))" true]
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["(let [a (atom 5)] (set-validator! a pos?) (swap! a (fn [_] -1)) @a)" true]
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["(let [a (atom 0) c (atom 0)] (add-watch a :k (fn [k r o n] (swap! c inc))) (swap! a inc) (swap! a inc) @c)" false]])
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(defn run-capture [bin expr]
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(def proc (os/spawn [bin "-e" expr] :p {:out :pipe :err :pipe}))
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(def out (ev/read (proc :out) 0x100000))
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(def err (ev/read (proc :err) 0x100000))
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(def code (os/proc-wait proc))
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(def lines (filter (fn [l] (not (empty? l)))
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(string/split "\n" (string/trim (if out (string out) "")))))
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[code (if (empty? lines) "" (last lines)) (string/trim (if err (string err) ""))])
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(var pass 0)
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(def fails @[])
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(each [expr throws?] cases
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(def [ocode oracle _] (run-capture "build/jolt" expr))
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(def [code got err] (run-capture jolt-bin expr))
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(cond
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throws?
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(if (and (not= ocode 0) (not= code 0)) (++ pass)
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(array/push fails [expr (string "expected both throw; oracle exit " ocode ", chez exit " code)]))
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(not= ocode 0) (array/push fails [expr (string "ORACLE FAILED exit " ocode)])
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(not= code 0) (array/push fails [expr (string "exit " code "; err: " err)])
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(= got oracle) (++ pass)
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(array/push fails [expr (string "want `" oracle "`, got `" got "`")])))
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(printf "\n_atomwatch parity [%s]: %d/%d passed" jolt-bin pass (length cases))
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(when (> (length fails) 0)
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(printf "%d FAIL(s):" (length fails))
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(each [e m] fails (printf " FAIL %s\n %s" e m)))
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(flush)
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(os/exit (if (empty? fails) 0 1))
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