simon/jolt
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions
jolt/host/chez/seed
History
Yogthos 992fc0af34 *unchecked-math* on macro-emitted arithmetic + local shadowing a bare native op 
Two general fixes shaken out by clojure.test.check's own suite (its splittable
PRNG mixes 64-bit longs and binds locals named min/max).

- *unchecked-math* now wraps arithmetic a macro emits. The analyzer rewrote a
  bare (+/-/*) to its wrapping unchecked-* under *unchecked-math*, but a macro's
  syntax-quote produces clojure.core/* (qualified), which was skipped — so e.g.
  test.check's mix-64 multiply grew to a bignum instead of a 64-bit long. The
  rewrite now also fires on the clojure.core-qualified form.
- A local binding named like a bare-emitted native op no longer shadows it. ops
  where native-ops maps the name to itself (+ - * / < > min max …) emit as the
  bare Scheme name; a local `max` emitted the same token, so
  (fn [max] (clojure.core/max …)) called the param. munge-name now prefixes such
  locals, like reserved words (derived from native-ops so they can't drift).

make test green (+1 corpus row, 0 new divergences), shakesmoke byte-identical.
One re-mint (analyzer + backend).
2026-06-27 18:19:14 -04:00
..
image.ss *unchecked-math* on macro-emitted arithmetic + local shadowing a bare native op 2026-06-27 18:19:14 -04:00
prelude.ss *unchecked-math* on macro-emitted arithmetic + local shadowing a bare native op 2026-06-27 18:19:14 -04:00
README.md Docs: Chez-only, drop the Janet-era references and obsolete migration notes 2026-06-22 09:05:35 -04:00

README.md

Chez bootstrap seed

These two files are the bootstrap compiler for jolt — the seed that makes the build self-hosting:

  • prelude.ss — the clojure.core prelude (all tiers + clojure.string/walk/ template/edn/set/pprint) as Scheme def-var! forms.
  • image.ss — the compiler image (jolt.ir + jolt.analyzer + jolt.backend-scheme) as Scheme def-var! forms.

Both are generated, not hand-written. They are checked in because a fresh checkout must be able to build jolt-on-Chez using only Chez: host/chez/bootstrap.ss loads this seed, then rebuilds the prelude + image from the .clj/.ss sources via the on-Chez compiler (read → analyze → emit, all on Chez). The seed is a joint byte-fixpoint: rebuilding from an up-to-date seed reproduces it exactly. make selfhost (host/chez/selfcheck.sh) runs host/chez/bootstrap.ss and diffs the rebuilt artifacts against the checked-in seed.

Re-minting

When the seed sources change (the core tiers, the compiler namespaces, the host contract, the reader, emit-image.ss), the seed drifts and make selfhost fails. Re-mint it by running host/chez/bootstrap.ss and writing the freshly rebuilt prelude/image back to host/chez/seed/prelude.ss / host/chez/seed/image.ss, then commit the refreshed files.