a0c9696900
Round 3 of the persistent-collections work. Lists were immutable Janet arrays, so conj/cons-prepend was an O(n) copy (O(n^2) to build a list) — a large perf gap vs Clojure's PersistentList. Add src/jolt/plist.janet: an immutable cons-cell list (first/rest/count), same algorithm as Clojure/CLJS/jank PersistentList. conj/cons onto a list now creates an O(1) node that shares the existing list as its tail (no copy), with a cached O(1) count. Repeated conj is O(n) total instead of O(n^2). Hooked plist through first/rest/next/seq/count/peek/pop/nth/empty/empty?, the predicates (list?/seq?/coll?/sequential?), realize-for-iteration, =, coll->cells (concat/lazy), both printers, destructuring, and instance? tags. (list ...) and quoted lists stay arrays; only conj/cons introduce plist nodes, so the surface and risk stay small. Verified: reduce-conj of 200k elements runs in ~0.4s (was effectively O(n^2)). conformance 206/206, features 78/78 (+7 list regressions), jank 120 (+1).
54 lines
2.3 KiB
Text
54 lines
2.3 KiB
Text
# jank conformance: runs the Clojure-language pass-tests from a local jank
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# checkout (https://github.com/jank-lang/jank, MPL-2.0) against Jolt and asserts
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# the number that pass stays at/above a baseline. This does NOT vendor jank's
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# sources (license differs) — it references ~/src/jank if present and SKIPS
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# cleanly when absent, so it is a local/dev regression aid.
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#
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# Each jank pass-test is an assertion script ending in `:success`. We load it in
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# a fresh context and count it as passing when it returns :success.
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(use ../src/jolt/api)
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(def jank-dir (string (os/getenv "HOME") "/src/jank/compiler+runtime/test/jank"))
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# Baseline: the number of pass-tests Jolt currently handles. Raise this as Jolt
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# gains features so regressions (a previously-passing test breaking) are caught.
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(def baseline 120)
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# Tests that loop forever under Jolt's eager evaluation (skipped to avoid hangs;
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# tracked as known gaps — variadic-recur arity selection and var-quote calls).
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(def skip-patterns ["/cpp/" "var-quote" "fn/recur/pass-variadic-position"])
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(defn- skip? [path]
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(var s false)
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(each p skip-patterns (when (string/find p path) (set s true)))
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s)
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(defn- walk [dir acc]
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(each e (os/dir dir)
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(def p (string dir "/" e))
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(case ((os/stat p) :mode)
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:directory (walk p acc)
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:file (when (and (string/has-suffix? ".jank" p)
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(string/find "/pass-" p)
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(not (skip? p)))
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(array/push acc p))))
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acc)
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(if (not (os/stat jank-dir))
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(print "jank-conformance: ~/src/jank not present — skipped")
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(do
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(def files (sort (walk jank-dir @[])))
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(var pass 0)
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(def fails @[])
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(each f files
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# A pass-test passes when no assertion throws (assert now errors on failure).
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(def res (protect (load-string (init) (slurp f))))
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(if (= (res 0) true)
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(++ pass)
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(array/push fails (string/slice f (+ 1 (length jank-dir))))))
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(printf "jank-conformance: %d/%d pass-tests pass (baseline %d)" pass (length files) baseline)
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(when (< pass baseline)
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(print "--- regressions (now failing, were within baseline) ---")
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(each rel fails (print " " rel))
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(error (string "jank conformance dropped to " pass " (baseline " baseline ")")))
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(printf "jank conformance OK (%d known gaps)" (length fails))))
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