deftype fields tagged ^:unsynchronized-mutable / ^:volatile-mutable can now be
reassigned in place from a method, as on the JVM. A jrec stores fields as cons
cells, so a new jolt-set-field! mutates the pair with set-cdr!. The deftype macro
rewrites (set! mutable-field v) in a method body to (set! (.-field inst) v), and
the analyzer compiles a (set! (.-field obj) v) target to jolt-set-field! — so
both the rewritten symbol form and an explicit interop (set! (.-root this) v) go
through one path. Field reads remain a snapshot at method entry, which is correct
for the universal read-then-set pattern (a repeated set! of the same field in one
call would read the entry value).
Closes the set!-of-local SCI failures: SCI load 202 -> 205/218.
The analyzer checked special forms before expanding macros, the reverse of the
canonical read -> macroexpand -> analyze order (Clojure/CLJS analyze-seq). Move
macroexpansion to the front of analyze-list. Knock-on fixes:
- letfn was both a (broken) macro expanding to let* AND a primitive special
(analyze-letfn, proper letrec*). Macroexpand-first surfaced the macro, breaking
mutual recursion; remove the macro, keep letfn a primitive.
- defmacro is now compiled by the analyzer (a :set-var-style :defmacro node that
defs the expander fn via the fn macro — so destructuring arglists desugar — and
marks the var a macro), so a non-top-level (when … (defmacro …)) works. The
runtime spine's separate top-level defmacro interception is removed: one path.
SCI load 162 -> 202/218.
The analyzer punted set! as uncompilable. Add it as a special form: (set! sym
val) on a var emits jolt-var-set, which updates the innermost thread binding (or
the root when unbound), returning val. A local target (deftype mutable field) or
an interop (.-field) target stays uncompilable for now. Also defines
*warn-on-reflection* (false) so set! on it resolves. SCI load 186 -> 196/218.
Chez rejects duplicate lambda formals, so any (fn [_ _] ...) failed to compile
— including every macro expander, whose &form/&env slots both expand to _. The
analyzer now renames each earlier duplicate param to a fresh name (Clojure binds
the last occurrence, so the earlier ones are shadowed and unreferenceable). SCI
load 162 -> 186/218.
Re-port the SCI compatibility stress test to joltc: host/chez/run-sci.ss loads
borkdude/sci's own source (vendor/sci, re-vendored) through the spine and
requires its forms to compile+eval. Floor-gated at 160/218 forms (the tail is
genuine host gaps — set! on vars, some macro/def shapes); raise as they close.
Wired into 'make test' (skips if the submodule isn't checked out).
jolt-cf1q.6
