Port the java.lang.String/CharSequence method surface to the Chez RT so
(.toUpperCase s), (.substring s a b), (.indexOf s x), the regex methods
(.matches/.replaceAll/.replaceFirst/.split), etc. run on a string target.
natives-str.ss holds jolt-string-method, ported from the seed's surface in
eval_resolve.janet: ASCII case mapping (byte-oriented like the seed), -1 on
indexOf miss, flonum numeric returns to match jolt's number model, Scheme
chars for charAt, and the regex methods over the irregex compiled via
jolt-re-pattern. record-method-dispatch gains a string? arm that falls
through to it (unsupported methods still throw).
Corpus prelude floor 2002 -> 2026 (+24), 0 new divergences. _str 27/27 vs
build/jolt; full jpm test + conformance x3 green.
The (. x m) dot-form (the . special form, distinct from .method sugar) and
the clojure.string namespace (needs prelude plumbing + Pattern) stay deferred.
Implement (type x) on the Chez RT (host/chez/natives-meta.ss). Mirrors the
seed's core-type: the :type metadata wins when present, a record yields its
ns-qualified class-name SYMBOL (user.TyR — no-ns sentinel #f so it = the
overlay's (symbol (str t))), everything else a host-taxonomy keyword
(:number/:string/:vector/:map/:set/:seq/:fn/…). Total by construction — a
non-record value falling through to a crash would read as a divergence, so the
cond covers every value type incl. the host wrappers (atom/volatile/regex/var/
transient/uuid -> :jolt/*, a :jolt/type-tagged map like ex-info -> its tag,
sorted-set -> :jolt/sorted-set, sorted-map -> :map) and a final :object.
Also pin sequential?/seq? on lazy seqs (test/chez/_seqpred.janet): the inc M
seq? re-def-var! fix already covers sequential? transitively (sequential? is
overlay and delegates to seq?), so no code change — the earlier "still broken"
note was wrong, it assumed sequential? was native like seq?.
Prelude corpus parity 2000 -> 2002 (the two type cases), floor raised, 0 new
divergences. Gate: _type 37/37 + _seqpred 22/22 (both vs build/jolt oracle),
emit-test 321/321, full jpm test, conformance 355x3.
The largest remaining crash bucket: defrecord/deftype/defprotocol/extend-type/
reify. make-deftype-ctor/make-protocol/protocol-dispatch/register-method/
satisfies?/extenders/instance-check/make-reified were ctx-capturing seed natives
resolving to jolt-nil.
records.ss adds a jrec type (tag + field alist), set!-extended into every
collection dispatcher (get/=/hash/count/keys/vals/seq/assoc/conj/contains?/map?/
pr-str/pr-readable/str) via the transients.ss capture-prev pattern, plus a
protocol registry (type-tag -> proto -> method -> fn) and dispatch over record
tags / host-type candidates. (get rec :jolt/deftype) returns the tag, so the
overlay record? works unchanged. A record equals another of the same type with
equal fields, is map?/coll? not vector?, prints #ns.Name{...}, and str uses a
custom Object toString impl when defined.
emit.janet :host-call now routes a non-shimmed method to record-method-dispatch
(was an emit-fail), so (.protoMethod record args) compiles; .-field access is
still analyzer-punted (deferred).
Prelude parity 1652 -> 1701, 0 new divergences. 4 print-method-multimethod cases
moved crash->allowlist (the printer doesn't consult a custom print-method yet).
jolt-jgoc.
