Shaking out clojure.data.json's own test suite (now 134/137):
- Reader.read(char[],off,len) bulk read + PushbackReader.unread(char[],off,len)
on the string/pushback reader jhosts; instance? java.io.PushbackReader/
Reader/StringReader (data.json re-wraps a reader unless it's already a
PushbackReader, so this is load-bearing for repeated reads).
- number protocol dispatch by actual type: a flonum is Double (not Long),
exact ratio is Ratio, exact integer is Long — value-host-tags split.
- Integer/toHexString|toOctalString|toBinaryString|toString; .isNaN/.isInfinite
as instance methods on numbers.
- EOFException ctor/class; .isArray on a class-name string.
- dispatch tags for the uuid/bigdec/inst host values so a protocol extended to
java.util.UUID / java.math.BigDecimal / java.util.Date / java.time.Instant
reaches its impl; canonical-host-tag strips java.math./java.time.
- instant/zoned/local time values compare = by epoch-ms (two parsed Instants).
- java.time.Instant/parse, java.sql.Date ctor + valueOf, TimeZone/getDefault,
DateTimeFormatter/ISO_INSTANT.
All runtime .ss (no re-mint). 9 corpus rows certified vs JVM; make test +
shakesmoke green, 0 new divergences.
- String.getChars copies into a char-array; String. builds from a char[]
(whole or offset/count slice); subSequence returns the substring.
- str of a StringBuilder returns its content (was the opaque host object;
.toString already worked).
- Appendable.append gains the 3-arg subsequence form append(csq,start,end)
on StringBuilder/StringWriter/file/port writers.
- reader combines a \uXXXX surrogate pair into the one Unicode scalar
(😃) instead of crashing on the lone high surrogate; a stray surrogate
maps to U+FFFD. (A high-plane char re-escaped as \uXXXXX stays the
irreducible UTF-16/scalar divergence.)
- TimeZone/getDefault.
These let clojure.data.json read and write JSON; its own suite goes from
not loading to 97/133 assertions passing (remainder: per-type writer
dispatch for uuid/bigdec/date, EOFException, niche date interop).
(instance? clojure.lang.Named :a), java.lang.CharSequence/Number,
java.util.Map/Set/List/Collection, clojure.lang.Associative now report
true for jolt's value model, matching the JVM (a Map is not a Collection;
a List excludes sets/maps). Libraries branch on these — data.json's
default-write-key-fn keys on clojure.lang.Named, so map keys serialized
with the leading colon before this.
A slash-free dotted symbol with a Capitalized final segment (java.util.Map,
clojure.lang.Named, java.time.Instant) now self-evaluates to its name string
instead of resolving to nil — jolt models a class as its name, so a library
can extend a protocol to, or instance?-check, a host class jolt has no shim
for. hc-resolve-global classifies these as :class; the analyzer emits a const.
extends? now matches when either the query or the registered tag is a dotted
suffix of the other, so (extends? P java.util.Collection) finds the impl
extend registered under the canonical short tag.
Add DateTimeFormatter/ISO_INSTANT (UTC, trailing Z).
These unblock loading clojure.data.json, which dispatches JSONWriter on
java.util.Map/Collection/CharSequence/Instant and defaults a formatter to
ISO_INSTANT.
read-string/read now return real sets for #{...} literals (top-level and
nested) instead of the reader's {:jolt/type :jolt/set} form — the data
seams convert set forms to sets (recursing, preserving metadata and source
map-key order); clojure.edn already did this. The compiler keeps reading
via the raw reader, so set literals in code stay forms the analyzer lowers.
format %x now emits lowercase hex (Chez number->string is uppercase); %X
unchanged.
extend and extends? handle a nil target type (host tag "nil"), matching
extend-type — protocols can be extended to nil via the function form, not
just the macro.
Found porting transit/data.json and shaking out aero.
clojure.core/*print-meta* was missing, so (binding [*print-meta* true] …) failed
to compile ("var of non-var"). Add it (default false, like the JVM); corpus
covers binding it.
The EBNF and reader S7 already specified ::kw auto-resolution — the
implementation was out of spec, now aligned. S7 noted unknown ::alias/k MUST be a
read error; jolt is lenient (reads :alias/k), so record that as a deviation.
Corpus gains JVM-certified rows for ::kw resolution, clojure.edn :default
receiving a symbol tag, and with-meta on a lazy seq.
The reader dropped the namespace on ::kw (read ::foo as :foo), so auto-resolved
keywords never matched their qualified form — code that round-trips them (spec
keys, aero's :aero.core/* expansion keys) silently broke. Resolve ::name against
the current ns and ::alias/name through the alias table, as Clojure does. The
runtime loader reads form-by-form with the ns set after the ns form; the
cross-compile reads all forms up front, so ei-emit-ns*/ei-emit-ns-records set the
ns before reading.
clojure.edn/read over a reader discarded its opts map — :readers/:default/:eof
were ignored, so a custom :default never saw the tag. Route the reader arity
through read-string so opts apply, and pass the tag to :default as a symbol (not
the internal :#name keyword), matching Clojure.
Seed re-minted (the ::halt transducer key in clojure.core now reads as
:clojure.core/halt). Corpus gains ::-keyword rows; the unit case that asserted the
old ns-dropping behavior now asserts the qualified result.
walk treated a record as a plain map (record? implies map?), rebuilding it via
(into (empty form) ...) which yields a bare map and drops the type. Add a record
branch before the map branch that conj-es the walked entries back onto the
original, matching JVM clojure.walk's IRecord case. Type-dispatched walks need it
— integrant resolves #ig/ref by detecting its Ref record while postwalking the
config, so without this every ref silently fails to resolve.
clojure.walk is baked into the prelude, so the seed is re-minted. Corpus gains
five JVM-certified rows for record type/instance? survival through pre/postwalk.
Rename src/jolt -> stdlib (the runtime-loaded layer; jolt-core stays the
seed-baked layer) and update the loader / emit-image / doc paths. Drop dead
code: the spike/ experiments, the duplicate clojuredocs-export.edn (json moves
to tools/), the Janet-era jolt.http binding, and the orphaned
persistent_vector.clj whose ns/path didn't even match.
Strip porting residue from comments and docstrings across host/chez, jolt-core,
stdlib, tests, and docs: internal issue ids, "Phase N" markers, and the "vs
Janet" historical exposition, leaving present-tense descriptions and the real
JVM-Clojure semantic contrasts. Same pass over the corpus suite labels. The seed
is unchanged (docstrings/comments aren't emitted), so the self-host fixpoint and
corpus are untouched.
Port tools/spec_coverage.py off the dead janet probe to bin/joltc and regenerate
coverage.md; drop the dead :host/janet rule from certify.clj and regenerate the
conformance profile. Add docs/host-interop.md (the JVM shims and how to register
your own host class from a library) and a writing-style note in CLAUDE.md.
Stabilize the four racy concurrency corpus cases (future-cancel and agent
send/send-off): give the future a sleeping body and the agent a slow action, so
cancel reliably catches an in-flight future and deref reliably reads the
pre-update snapshot. They certify deterministically now, so drop their :flaky
allowlist entries and the orphaned legend.
- == 1-arg returns true for any value (Clojure short-circuits before the number
check), not 'requires numbers'.
- current-time-ms wired to now-millis so the time macro works.
- subvec truncates float/ratio indices via long (Scheme quotient rejects flonums).
- defonce checks bound? not var-get — in a top-level do the name is already an
unbound interned cell, which var-get throws on.
- drop the line-seq corpus row (used janet/spit, N/A); allowlist char-array
(needs Class/forName "[C").
Corpus 2678->2683, floor raised. Re-minted. Full gate green; CI green.
jolt-cf1q.7
Remove the 17 rows that exercised the Janet FFI bridge (interop/janet bridge,
interop/jolt.interop) and the Janet build-time env scrub (host-interop/bake env
scrub, janet.os/setenv) — none exist on any non-Janet host, so they only added
crash noise. Portable interop is covered elsewhere. corpus 2920->2903 rows;
gate 2678/2742 0 new div, certify 0 new/0 stale.
Remove the Janet seed (src/jolt/*.janet: reader, value layer, vars/ns, the
tree-walking interpreter, the Janet backend, the optimizing compiler), the
Janet->Scheme cross-compiler (host/chez/{driver,emit,jolt-chez}.janet),
bin/jolt-chez, the jpm build (project.janet) and the Janet test runner
(run-tests.janet), plus the entire Janet test suite. jolt now builds and runs
on Chez alone: bin/joltc off the checked-in seed, bootstrap.ss to rebuild it.
The portable Clojure stays: jolt-core/**, host/chez/**.ss, and the stdlib +
tooling under src/jolt/clojure + src/jolt/jolt (read by the seed build, no
Janet). The gate is 'make test' (self-host, corpus, unit, cli smoke, certify).
Drop the sci and clojure-test-suite submodules (used only by deleted Janet
integration tests); irregex stays.
Filesystem corpus/unit cases that probed project.janet now probe README.md.
jolt-cf1q.6
corpus.edn :expected is now the value reference JVM Clojure produces, set by the
new test/conformance/regen-corpus.clj (one JVM process, per-row thread watchdog).
167 rows moved to the JVM value: ratios (/ 1 2)=>1/2, doubles (double 3)=>3.0,
shared-heap concurrency (the future/pmap/agent cases), clojure.math doubles. The
JVM is the spec; jolt is measured against it.
known-divergences.edn shrinks to the rows whose JVM value is an opaque host object
that can't round-trip to source (Java arrays, transients, atoms, beans, proxies,
chunks all print as #object[..@addr]) plus (fn* foo) and a few racy concurrency
cases (:flaky). The zero-janet gate's allowlist becomes the set of host gaps vs the
JVM spec (no Class/array/BigDecimal, :jolt reader, jolt's own printing).
Math/clojure.math sqrt/pow/floor/trig now return doubles (Chez returns exact for
exact args, e.g. (sqrt 9)=>3); JVM always returns a double.
extract-corpus.janet no longer writes corpus.edn unless asked (the test runner
imported it and was silently overwriting the JVM corpus with the spec sources'
placeholder answers). The prelude parity gate is deleted — the zero-janet spine +
certify.clj are the oracles.
zero-janet 2678 (0 new divergences), certify 0 new / 0 stale, emit-test 330/330.
The corpus certifier (test/conformance) flagged four cases where jolt's
hand-written :expected matched a real defect rather than Clojure. Fixed in the
jolt-core overlay, corrected the spec :expected, re-certified against JVM Clojure:
- ex-message: returns nil for a non-throwable (dropped the lenient string branch);
still returns the message for ex-info. (jolt-l8e8)
- munge: preserves the argument's type — a symbol munges to a symbol, not a string.
(jolt-hc35)
- print: (print nil) emits "nil", not "" (top-level nil guard; str yields "").
(jolt-pqio)
- bounded-count: uses the counted? fast path (full count), else counts up to n via
seq — was (min n (count coll)), wrong for counted colls. Added an uncounted-coll
spec case. (jolt-2507)
Removed the 4 :bug entries from known-divergences.edn (now certified), regenerated
corpus + profile, re-minted the Chez bootstrap seed (clojure.core changed). Gates:
Janet 155/0, JVM certify clean, both Chez corpus gates 2534 (floors raised),
bootstrap 6/6, fixpoint intact.
Makes the host-neutral corpus a first-class language specification with
conformance levels, not just a regression suite.
- [suite label] is now a unique, stable case id (extract-corpus disambiguates
duplicate labels with ' (N)' — one collision existed).
- certify.clj --profile emits test/conformance/profile.edn: every non-portable
case classified by the host feature it requires (numerics/double-only,
concurrency/snapshot, host/jvm-interop, host/arrays, host/janet,
async/core-async, runtime/eval, reader/jolt, printer/jolt, strictness/jolt,
impl/representation, bug). 2670 of 2919 cases are portable (pass on any faithful
Clojure); 249 are feature-gated.
- SPEC.md documents the contract: row schema, the JVM oracle, conformance levels,
the feature vocabulary, and a worked new-runtime harness — so hosting jolt
elsewhere and proving it correct is read-one-file mechanical.
Janet gate 155 files 0 failed; certify + zero-janet gates green.
The corpus only ever saw test/spec/*-spec.janet; the 355 hand-written cases in
test/integration/conformance-test.janet (inline Janet, the lazy-seq / IFn /
destructuring / transducer essentials) were invisible to it and to any non-Janet
runtime. extract-corpus.janet now also pulls that (def cases ...) vector, deduped
by :actual, organized into 41 'conformance / <section>' suites recovered from the
file's ### headers. Corpus 2658 -> 2919 rows (+261 unique).
JVM certification: only 1 new divergence ((/ 2) => 0.5 vs 1/2, the all-double
numeric model) — classified. Chez gates: +1 known host gap (instance? Atom, atom
class identity, Phase 4) allowlisted in both runners; parity rose 2295 -> 2533 on
both, floors raised. Janet gate 155 files 0 failed; certifier green (0 new/stale).
Deferred: 41 non-literal core-async spec rows ((a "src") async-harness wrapper)
need harness context the corpus format doesn't carry — left for inc3.
The transient assoc! accepted an odd key/val count and silently assigned
nil to the dangling key — non-Clojure, and inconsistent with the seed's
own plain assoc (which throws) and Clojure's assoc!. Make it throw.
Updates the 4 'assoc! odd args' transient spec rows to 3 :throws + 1
even-args positive, and regenerates corpus.edn. The Chez host already
threw on these, so this only realigns the corpus contract.
Emit a :quote node by reconstructing the raw reader form as RT constructor
calls: symbol -> jolt-symbol, list (array) -> jolt-list, vector (tuple) ->
jolt-vector, map -> jolt-hash-map, set -> jolt-hash-set, scalars via emit-const.
The runtime value of a quote is just that literal data (the interpreter returns
the reader form verbatim).
Quote exposed a latent seq.ss bug: empty map/filter results were jolt-nil, but
Clojure's (map f []) is an empty seq, so (= () (map f [])) must be true. Return
jolt-empty-list (which seqs back to nil, so it's still a valid lazy-tail
terminator) instead — matching jolt-take/drop/rest/list.
Prelude emit reach 334 -> 342/355. Subset probe 632 -> 664/664 compiled, 0
divergences (quote + the seq fix pull 32 corpus cases into the subset). emit-test
110/110 (added 16 quote cases). corpus.edn regenerated (the 3 malformed-catch
spec rows). Full gate green.
0a (host/chez/values.ss): Jolt value model on Chez — nil sentinel distinct from
#f/'(), interned keywords, ns+meta symbols, exactness-aware = and consistent
hash. Chez numeric tower gives ratios/bignums free. 33/33 tests.
0b (test/chez/): extract test/spec/*.janet defspec tables into corpus.edn (2655
cases, valid as both EDN and Janet data), and a runner that drives ANY jolt
binary via the CLI boundary with per-case subprocess isolation. Pluggable target
(JOLT_BIN) so the same corpus gates every host. Baseline vs Janet build/jolt:
2641/2655, 14 known CLI divergences allowlisted; gate fails only on NEW ones.
