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Chez Phase 1 (increment 3h): host-interop method-call emit

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(.method target arg*) now analyzes to a :host-call IR node instead of
punting at analyze. The Chez back end lowers it to a jolt-host-call
dispatch for the methods the RT shims (.write -> port display,
.isDirectory -> file-directory?, .listFiles -> directory-list); any
other method stays out of subset (clean emit-time reject, so it can't
read as a compiled-but-broken corpus divergence). The Janet back end
punts ALL :host-call to the interpreter, same shape as letfn: compiles
on Chez, interprets on Janet, zero change to the main language.

Closes the io tier's print-method defmethods and file-seq: prelude emit
reach 348 -> 354/355 (50-io 20/20). The one remaining gap is the regex
literal in parse-uuid (needs a regex engine on Chez; deferred).

emit-test 122/122; Chez subset 672/672, 0 divergences; full gate green.
This commit is contained in:
Yogthos 2026-06-17 18:58:44 -04:00
parent 0f7d2753a8
commit b1cdfd1c9b
9 changed files with 96 additions and 13 deletions
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test/chez/README.md
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@ -72,16 +72,19 @@ catalogs the gaps; macros are skipped (analyze-time only, not a runtime value):
JOLT_CHEZ_PRELUDE=1 janet test/chez/core-prelude-probe.janet
Baseline after inc 3f (quoted literals): **342/355 non-macro core forms emit** to
Scheme (was 334 at inc 3e, 303 at inc 3d). A `:quote` node reconstructs the raw
reader form as RT constructor calls — symbol → `jolt-symbol`, list → `jolt-list`,
vector → `jolt-vector`, map/set → `jolt-hash-map`/`jolt-hash-set`, scalars via
`emit-const`. Prior: `:throw` → `jolt-throw` (Scheme `raise` of the raw jolt
value); `:try` → `guard` (catch, class dropped → catch-all) + `dynamic-wind`
(finally); `ex-info` native-op building the tagged jolt map, so the tier
ex-data/ex-message/ex-cause read it over `get` for free. Remaining 13 gaps: Java
host interop `.write`/`.isDirectory` (6, io tier), `letfn` (4), `declare`/
def-no-init (2), one edge (`parse-uuid`). The probe has a regression floor.
Baseline after inc 3h (host-interop method calls): **354/355 non-macro core forms
emit** to Scheme (was 348 at inc 3g, 342 at inc 3f). A `.method` call now analyzes
to a `:host-call` IR node; the Chez emitter lowers it to a `jolt-host-call`
dispatch for the methods the RT shims — `.write` → port `display`, `.isDirectory`
→ `file-directory?`, `.listFiles` → `directory-list` — closing the io tier's
print-method defmethods and `file-seq` (now 20/20). Any other method is out of
subset (a clean emit-time reject, so it can't masquerade as a compiled-but-broken
divergence); the Janet back end punts ALL `:host-call` to the interpreter. Prior
incs: `:quote` reconstructs the raw reader form as RT constructors; `:throw` →
`jolt-throw`, `:try` → `guard` + `dynamic-wind`, `ex-info` native-op; `letfn` →
`letrec*`; `declare`/def-no-init → a reserved var cell. Remaining 1 gap: the regex
literal in `parse-uuid` (needs a regex engine on Chez — see jolt issue). The probe
has a regression floor (354).
Prior, inc 3b (seq tier + dynamic IFn, jolt-5pso): 595/595 compiled, 0 divergences,
2060/2655 out of subset. The seq tier brought up a list/lazy-seq type with