* Fix four bugs surfaced by the commonmark-app example
- regex: bounded quantifiers {n,m} no longer expand exponentially. The
desugaring inlined the continuation per optional level, doubling it each
time, so {0,61} built a PEG the compiler expanded to ~2^61 nodes and hung.
Each level is now its own grammar rule referenced by name (jolt-3xur).
- strings are a seqable of chars for vec/set/into, matching seq. They went
through realize-for-iteration, which had no string case, so into/set got
raw bytes (code points) and set threw; vec used string/from-bytes (1-char
strings). realize-for-iteration now maps make-char over the bytes, and
core-vec matches (jolt-dl4s).
- clojure.string/split takes Java Pattern.split limit semantics: negative
keeps trailing empties, 0/omitted drops them (a no-match result stays
[input]), positive caps the part count with the remainder unsplit. It used
to delegate the limit to take, so a negative limit returned [] and the
2-arg form never trimmed trailing empties (jolt-ik3a).
- System/exit is registered (maps to os/exit), so (System/exit n) works
(jolt-w2wf).
* regex: single-digit backreferences \1..\9 (jolt-xtss)
\1..\9 now match the text captured by the corresponding group, so
patterns like ([-*_])\1\1 or (\w+) \1 work. The parser records which
groups are referenced; a referenced group additionally captures its text
under a tag and the backref compiles to a PEG (backmatch). Only referenced
groups change — they match possessively (the CPS-over-possessive-PEG engine
can't backtrack into a tagged capture), so backtracking back into a
backreferenced group isn't supported (rare). Unreferenced groups keep full
backtracking and position-based result capture unchanged.
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Co-authored-by: Yogthos <yogthos@gmail.com>
* Reader: #() params survive syntax-quote (auto-gensym names)
#(...) named its synthesized params with bare gensyms, so a #() written inside a
syntax-quote had its params qualified to the current ns by sq-symbol — and a
qualified symbol isn't a valid fn param. hiccup's compiler emits
`(let [sb# ..] (iterate! #(.append sb# %) ..)), which broke with "Unable to
resolve symbol: ns/_NNNN".
Name the params with a trailing # (auto-gensym suffix, like Clojure's p1__N#) so
syntax-quote maps them consistently and leaves them unqualified. Harmless outside
a backtick (just a regular symbol name).
* interop: String/valueOf static + String is a CharSequence
Two interop gaps surfaced bringing up hiccup and malli:
- String/valueOf(Object): hiccup's compiler stringifies attribute values with
(String/valueOf (or arg "")). Added the static — "null" for nil, else core-str.
- (instance? CharSequence s) returned false for a string; String implements
CharSequence, and malli's :re validator gates on it before matching, so :re
schemas always failed. instance-check now answers true for strings.
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Co-authored-by: Yogthos <yogthos@gmail.com>
The 813-line host_interop.janet (java.lang statics, java.time, the 458-line
java.io/util/net/sql/text install-io!, and collection interop all in one file)
becomes a 19-line aggregator over src/jolt/interop/:
- java_base.janet — java.lang statics (Math/Thread/System/Long) + the java.time
shim + the shared chr/pad2/formatter coercion helpers
- host_io.janet — java.io/util/net/sql/text shims; imports java_base for the
shared helpers it reuses (it constructs java.time values and
formats dates)
- collections.janet— the late-bound .iterator/.nth/.count/.seq interop hooks
host_interop.janet just loads the three and runs install!/install-io!/
install-collections! in order. chr/pad2/formatter become public (they cross the
java_base->host_io boundary now). The registry machinery (class-statics/
tagged-methods/register-*!) stays in the evaluator, which loads first — moving it
out touches the hot dot-dispatch and is left as a separate step.
Pure move, no behavior change. Also fixes a cache footgun the subdir exposed:
source-fingerprint walked src/jolt/ with a non-recursive (os/dir), so an edit to
an interop/ file would not have busted the ctx image cache (stale-image bug) —
made it recurse, keyed by repo-relative path.
Full gate green: host-interop-spec (130+ rows across every JDK area), ctx-image
cold/warm, conformance x3, suite >=4695/88, fixpoint.
