77e80dab9c
Running the rewrite-clj test suite under jolt exposed six bugs, each fixed here:
- `for`/`doseq` `:let` bindings never went through `destructure`, so a
destructuring pattern (`:let [{:keys [y]} x]`) hit `let*` raw and failed to
compile. Emit `let`, like Clojure.
- `with-open` couldn't close a deftype/defrecord that implements a `close` method
(java.io.Closeable / AutoCloseable, e.g. tools.reader's readers) — `__close`
only knew jhost readers and map `:close` fns. Dispatch a record's `close`.
- A deftype/defrecord method param named like a field didn't shadow the field
(the field's let-binding wrapped the params). Params now shadow, as in Clojure.
- A deftype whose simple name collided with a built-in host class clobbered it in
the global ctor table, so `(java.io.PushbackReader. …)` built tools.reader's
same-named deftype. Register deftypes/built-ins by FQN, don't let a deftype
overwrite a built-in's simple name, and qualify a bare `(Name. …)` to the
deftype's FQN only in the ns that defined it.
- `clojure.walk` was lazy over a non-list seq (missing `doall`), so a walk whose
fn has side effects read stale state. Make it eager, like Clojure.
- `Character/isWhitespace` used an ASCII-only check that missed U+2028 and other
Unicode whitespace. Use the JVM's Unicode set (minus the no-break spaces it
excludes).
Regressions: corpus rows (for-let destructure, method-param shadow, walk eager,
isWhitespace), a unit row (with-open closes a record), and smoke checks (the
class-name collision, run in a fresh -e process so the deftype doesn't leak).
One divergence remains unfixed: a submatch from a losing regex alternation branch
leaks when the winning branch has a quantified group (a bug in the vendored
irregex engine, not jolt) — tracked separately.
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| .. | ||
| image.ss | ||
| prelude.ss | ||
| README.md | ||
Chez bootstrap seed
These two files are the bootstrap compiler for jolt — the seed that makes the build self-hosting:
prelude.ss— theclojure.coreprelude (all tiers + clojure.string/walk/ template/edn/set/pprint) as Schemedef-var!forms.image.ss— the compiler image (jolt.ir+jolt.analyzer+jolt.backend-scheme) as Schemedef-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.