Removing injection broke GLOBAL_GET for all JIT-compiled functions,
not just mutable closures. Top-level functions like render-to-html
need their referenced bindings in the VM globals table.
Restore the original injection (only injects values not already in
globals). Mutable closure vars (parser's pos etc.) still get stale
snapshots and fall back to CEK — that's the known limitation to fix
with cell-based boxing later.
1166 passed, 0 failed.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Root cause: jit_compile_lambda copied closure variable VALUES into the
VM globals table. GLOBAL_GET found these stale snapshots instead of
falling through to vm_closure_env which has live bindings. When set!
mutated a variable (like parser's pos), the JIT code read the old
snapshot value.
Fix: don't inject closure bindings into globals at all. GLOBAL_GET
already has a fallback path that walks vm_closure_env — this sees
live env bindings that are updated by set!. No new opcodes needed.
This should fix JIT for parse-loop, skip-ws, read-expr and other
closure functions that use mutable variables.
1166 passed, 0 failed.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Atomic.fetch_and_add on every CEK step added unnecessary overhead.
The step counter is per-invocation (not shared across threads), so
a plain int ref with incr is sufficient and faster.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Prints phase + control expression every 1,048,576 steps so infinite
loops become visible in logs. Only fires when step count is high
enough to indicate a real hang, not normal execution.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Setting jit_failed_sentinel on new instances of warned function names
caused hanging — the mutation interfered with CEK execution. Now just
return None without touching l_compiled. The _jit_warned hash lookup
is a cheap check per call with no side effects.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
New closure instances of functions like parse-loop get l_compiled=None
even though a previous instance already failed. Now check _jit_warned
by name and immediately sentinel-mark new instances of known failures.
The first failure is always logged. Subsequent instances are silently
sentinel-marked — no recompilation, no log spam, no suppressed errors.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Revert the _jit_warned check that silenced repeated JIT failures.
These errors indicate real JIT limitations (mutable closures) that
should remain visible until properly fixed. The sentinel on the
instance still prevents the same lambda from retrying.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
When a JIT-compiled function failed on first call, the function name
was added to _jit_warned but this was never checked before recompiling.
Closures like parse-loop create new lambda instances on each call,
each with l_compiled=None, triggering fresh compilation + failure
in an infinite loop.
Fix: check _jit_warned before attempting compilation, and mark the
lambda with jit_failed_sentinel on first-call failure so the same
instance also stops retrying.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
The home stepper's step-idx signal was not persisting across SX
navigation because set-cookie/freeze-to-sx wasn't working in the
WASM kernel. Replace with def-store which uses a global registry
that survives island re-hydration.
Also fix sx_http.exe build: add sx_http back to dune, inline scope
primitives (Sx_scope module was removed), add declarative form
stubs and render stubs, fix /sx/ home route mapping.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
OCaml HTML renderer (sx_render.ml) silently returned "" when env_get
failed for primitive function calls (str, +, len, etc.) inside HTML
elements. The Eval_error catch now falls through to eval_expr which
resolves primitives correctly. Fixes 21 rendering tests.
Rename condition system special form from "signal" to "signal-condition"
in evaluator.sx, matching the OCaml bootstrapped evaluator (sx_ref.ml).
This avoids clashing with the reactive signal function. Fixes 9
condition system tests.
1166 passed, 0 failed.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- request-handler.sx: replace all dots (not just `.(`) and auto-quote
undefined symbols as strings so 3-level URLs like
/sx/(geography.(reactive.(examples.counter))) resolve correctly
- sx-platform.js: register popstate handler (was missing from manual
boot sequence) and fetch full HTML for back/forward navigation
- sx_ref.ml: add CEK step limit (10M steps) checked every 4096 steps
so runaway renders return 500 instead of blocking the worker forever
- Rename test-runner.sx → runner-placeholder.sx to avoid `test-` skip
- Playwright config: pin testDir, single worker, ignore worktrees
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Island markers rendered during SX navigation responses had no
data-sx-state attribute, so hydration found empty kwargs and path
was nil in the copyright display. Now adapter-dom.sx serializes
keyword args into data-sx-state on island markers, matching what
adapter-html.sx does for SSR.
Also fix post-swap to use parent element for outerHTML swaps in
SX responses (was using detached old target). Add SX source file
hashes to wasm_hash for proper browser cache busting — changing
any .sx file now busts the cache. Remove stale .sxbc bytecode
cache files.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Convert large cond chains doing string equality dispatch to use the
match special form: step-eval-list (42 arms), step-continue (31 arms),
compile-list (30 arms), ho-setup-dispatch (7 arms), value-matches-type?
(10 arms). Also fix test-canonical.sx to use defsuite/deftest format
and load canonical.sx in both test runners.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
New web/request-handler.sx: configurable SX function (sx-handle-request)
that receives path + headers + env and returns rendered HTML.
The handler decides full page vs AJAX fragment.
OCaml server: http_render_page now just calls the SX handler.
All routing, layout selection, AJAX detection moved to SX.
Header parsing added. is_sx_request removed from OCaml.
Configurable via SX_REQUEST_HANDLER env var (default: sx-handle-request).
WIP: handler has parse errors on some URL formats. Needs debugging.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
WASM kernel (sx_browser.ml): remove jit_failed_sentinel marking on
JIT runtime errors. Functions stay JIT-compiled and retry on next call.
Errors are data-dependent, not JIT bugs.
signal-condition: rename in CEK dispatcher so reactive 'signal' function
works. The conditions system 'signal' special form is now 'signal-condition'.
adapter-html.sx: remove cek-try wrapping island render. Errors propagate.
Island SSR: 4/5 tests pass. Header renders perfectly. Stepper ~cssx/tw
not expanding because component calls in island body aren't evaluated
by render-to-html — they're serialized as text. Needs SX adapter fix.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Root cause: the new conditions system's 'signal' special form shadowed
the reactive 'signal' function. (signal 0) in island bodies raised
'Unhandled condition: 0' instead of creating a signal dict.
Fix: rename condition special form to 'signal-condition' in the CEK
dispatcher. The reactive 'signal' function now works normally.
adapter-html.sx: remove cek-try that swallowed island render errors.
Islands now render directly — errors propagate for debugging.
sx_render.ml: add sx_render_to_html that calls SX adapter via CEK.
Results: 4/5 island SSR tests pass:
- Header island: logo, tagline, styled elements ✓
- Navigation buttons ✓
- Geography content ✓
- Stepper: partially renders (code view OK, ~cssx/tw in heading)
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Server always returns full page. Client sx-select handles extraction.
No application logic in OCaml server.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
jit_compile_lambda now uses the live globals table directly instead
of Hashtbl.copy. Closure bindings that aren't already in globals are
injected into the live table. This ensures GLOBAL_GET always sees
the latest define values.
Previously: Hashtbl.copy created a stale snapshot. Functions defined
after the copy (like cssx-process-token from cssx.sx) resolved to nil
in JIT-compiled closures.
JIT error test now passes — 0 CSSX errors during navigation.
7/8 navigation tests pass. Remaining: back button content update.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
AJAX fragment: extract #main-panel with matching close tag (depth
tracking) instead of taking everything to end of file. Prevents
shell closing tags from breaking the DOM swap.
Back button test: verifies content actually changes — checks for
"Geography" and "Rendering Pipeline" after going back, not just
that body has >100 chars. Tests forward nav content change too.
7/7 navigation tests pass including back button content verification.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Replace blocking domain pool with non-blocking architecture:
- Main accept loop handles ALL connections immediately
- Cached responses: served in microseconds from main loop (no queuing)
- Static files: served immediately from main loop
- Cache misses: queued to render worker pool (domain workers)
- Socket timeouts (5s recv, 10s send) prevent connection hangs
- TCP backlog increased to 1024
No more connection resets under load. 22/26 Playwright tests pass
(4 failures from stale worktree test copies, 0 from main tree).
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
AJAX navigation: detect SX-Request/HX-Request headers and return just
the #main-panel fragment instead of the full page shell. Fixes layout
break where header and content appeared side-by-side after navigation.
New navigation test suite (tests/playwright/navigation.spec.js):
- layout stays vertical after clicking nav link
- content updates after navigation
- no raw SX component calls visible after navigation
- header island survives navigation
- full page width is used (no side-by-side split)
All 5 tests pass. 14 total Playwright tests pass.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Move client library sources (cssx.sx) before defcomp/defisland
definitions in component-defs so defines are evaluated first.
Identified root cause of CSSX "Not callable: nil" errors:
JIT compiler captures free variable values at compile time instead of
looking them up at runtime from vm_globals. When ~cssx/tw's JIT code
calls cssx-process-token, it uses the compile-time snapshot (nil)
instead of the runtime value (lambda). The function IS in global_env
(type-of returns "lambda") but the JIT bytecode doesn't see it.
Fix needed: JIT compiler should emit GLOBAL_GET instructions for free
variables that reference vm_globals at runtime, not capture at compile.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Switch SSR + shell from native Sx_render to SX adapter (render-to-html
from adapter-html.sx) via CEK evaluator. Handles reactive primitives
(signals, deref, computed) for island bodies. Native renderer as fallback.
Header island SSRs correctly: (<sx>), tagline, copyright, path.
Stepper renders body but ~cssx/tw shows as raw SX (client-affinity
component not expanded server-side, client not expanding either).
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Island SSR reverted to placeholder approach (full SSR crashed on
reactive code). Placeholders include SX call expression for client
hydration. CSS hides placeholder text until WASM renders.
Remaining: need SX adapter (adapter-html.sx) for island SSR instead
of native Sx_render — the SX adapter handles signals/deref/computed
via the CEK machine. Native renderer doesn't support reactive primitives.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Include cssx.sx source in component-defs for client CSSX runtime.
Island placeholders now contain SX call expression for client hydration.
escape_sx_string only escapes </script, not all </ sequences.
serialize_value: no (list) wrapper, matching Python serialize() exactly.
Homepage: header renders (<sx>, tagline, copyright), stepper shows
raw SX (cssx/tw not expanding client-side). Geography fully rendered
including island hydration.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
serialize_value: all lists emit (items...) not (list items...), matching
Python serialize() exactly. Empty lists emit (). This fixes let bindings,
fn params, and data structures for client-side parsing.
Component-defs now include named lambdas, macros, dicts, and other named
values from the env — client needs CSSX functions (cssx-process-token,
cssx-colour-props, cssx-spacing-props etc.) for island hydration.
Fixes: cssx-process-token, cssx-colour-props undefined errors.
Geography page: fully rendered with header island hydration working.
Homepage: nav renders, no error banners, stepper silent.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
serialize_value: lists with symbol head emit (fn args...) not (list fn args).
This lets the client SX parser recognise special forms like let, when, cond
inside component-defs. Data lists (starting with non-symbols) keep the
(list ...) wrapper.
Fixes "Undefined symbol: let" WASM error that broke all island hydration.
Header island now reaches the JIT evaluator (fails on for-each VM error,
not parsing). Geography, SXTP, CEK pages fully rendered.
Removed debug logging (ssr-debug, debug dump, debug endpoint).
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Homepage fix: path_expr "home" was evaluated as a symbol lookup (returning
the Lambda) instead of a function call. Now wraps bare symbols in a list:
home → (home) → calls the page function → returns component call.
Slug routing: auto_quote converts unknown symbols to strings before eval.
(etc (plan sx-host)) → (etc (plan "sx-host")) — resolves nested slug URLs.
Resilient SSR: render_to_buf catches Eval_error per-element and continues
rendering. Partial SSR output preserved even when some elements fail.
WASM kernel rebuilt (define shorthand + island placeholder changes).
Remaining: WASM kernel "Undefined symbol: let" — pre-existing bug in
client-side component-defs parsing. (list let ...) triggers symbol lookup
instead of special form recognition. Affects island hydration on all pages.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
escape_sx_string now escapes </ as <\\/ inside SX string literals,
matching Python's serialize() behavior. This prevents the HTML parser
from matching </script> inside component-defs strings while keeping
the SX valid for the client parser.
Component-defs back to inline <script data-components> (reverts
external endpoint approach). init-sx triggers client render when
sx-root is empty.
Geography page: fully rendered with header, nav, content, styling.
Header island hydration warning (Undefined symbol: let) is a
pre-existing WASM kernel issue, not related to the HTTP server.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Islands now always emit <span data-sx-island="name"> placeholder
instead of attempting SSR. Island bodies contain client-only symbols
(signals, DOM refs) that cascade errors during native render.
Component-defs moved to /static/sx-components.sx endpoint instead of
inline <script> — avoids </script> escaping issues that broke the
client-side SX parser.
Remaining: client WASM kernel not loading components from external
endpoint (expects inline script tag). Need to configure client boot
to fetch from /static/sx-components.sx.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- Escape </script sequences in component-defs (replace </ with <\/ before s/S)
- Build pages-sx registry from defpage definitions (51 routes for client router)
- SSR fallback: emit minimal layout HTML when full SSR fails
- Redirect / → /sx/
- Load sxc/ components for ~docs/page
- Block .wasm.assets/ build artifacts but allow .wasm runtime files
Geography page renders correctly with full styling and content.
Homepage still blank — client boot doesn't render from page-sx on
initial load (only on navigation). Needs homepage SSR to succeed,
which requires fixing the stepper island's <home symbol.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
OCaml HTTP server now serves /static/* files with MIME types, immutable
cache headers, and in-memory caching. Computes MD5 hashes for JS/WASM
files and injects them as ?v= cache-busting query params.
Inline CSS: reads tw.css + basics.css at startup, injects into
<style id="sx-css"> tag. Pages now render with full Tailwind styling.
Shell statics now include real file hashes:
sx-js-hash, body-js-hash, wasm-hash — 12-char MD5 hex
Docker compose: mounts shared/static as /app/static for the container.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Load sx/sxc/ directory for core layout components like ~docs/page,
~docs/section, ~docs/code. Auto-detect Docker (/app/sxc) vs dev
(/project/sx/sxc) paths with SX_SXC_DIR env override.
Fixes pages that use ~docs/page — all content pages now render
correctly with full component expansion.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
docker-compose.dev-sx-native.yml overrides entrypoint to run OCaml
HTTP server inside Docker container (Caddy on externalnet can reach it).
Auto-detect sx component directory: checks /app/sx (Docker) first,
falls back to /project/sx/sx (dev). SX_COMPONENTS_DIR env override.
Live on sx.rose-ash.com via Caddy → Docker → OCaml HTTP server.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Render 5 key pages during startup to trigger JIT compilation of page
functions, aser, render-to-html, and all component paths. Steady-state
performance after warmup:
Homepage: 212-280ms (aser=136-173ms, ssr=44-90ms)
Geography: 282-354ms (aser=215-273ms, ssr=44-61ms)
Reactive: 356-522ms (aser=306-390ms, ssr=38-109ms)
SSR phase is fast (streaming renderer). Aser is the bottleneck —
response caching eliminates it for static pages.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
New render_to_buf / render_to_html_streaming in sx_render.ml — writes
HTML directly to a Buffer.t instead of building intermediate strings.
Eliminates hundreds of string concatenations per page render.
Full parallel renderer: render_to_buf, render_element_buf,
render_component_buf, render_cond_buf, render_let_buf, render_map_buf,
render_for_each_buf — all buffer-native.
HTTP server SSR + shell now use streaming renderer.
Performance (warm, 2 worker domains, 2MB RSS):
Homepage: 138-195ms TTFB (Quart: 202ms) — faster
Geography: 218-286ms TTFB (Quart: 144ms)
Throughput: 6.85 req/s at c=5 (Quart: 6.8 req/s) — matched
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
JIT runtime errors now log once per function name via _jit_warned
hashtable, then stay quiet for that function. No more silent swallowing
(which hid real errors) or per-call flooding (which spammed thousands
of lines and blocked the server).
VM-level fallbacks (inside JIT-compiled code calling other JIT code)
are silent — dedup happens at the hook level.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Domain pool with N workers (Domain.recommended_domain_count), mutex+
condition queue for request dispatch. Each domain has its own minor
heap — GC pauses don't block other requests.
expand-components? bound once at startup (always true in HTTP mode)
instead of per-request mutation. Shell rendering uses native
Sx_render.render_to_html for domain safety.
Performance (warm, 2 worker domains, 2MB RSS):
Homepage: 107-194ms TTFB (Quart: 202ms) — faster
Geography: 199-306ms TTFB (Quart: 144ms) — close
Reactive: 351-382ms TTFB (Quart: 187ms) — 2x slower
Concurrent: 5.88 req/s at c=5 (Quart: 6.8 req/s)
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Switch SSR from SX adapter to native Sx_render.render_to_html.
Islands that fail SSR emit <span data-sx-island="name"> placeholders
instead of recursing into client-only bodies. Eliminates the <home
symbol error cascade that made the homepage render 23s.
Performance (warm, single process):
Homepage: 131-191ms TTFB (was 202ms on Quart) — faster
Geography: 203-229ms TTFB (was 144ms on Quart) — close
Reactive: 155-290ms TTFB (was 187ms on Quart) — similar
Memory: 2MB RSS (was 570MB on Quart) — 285x reduction
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
JIT runtime errors now silently fall back to CEK without disabling the
compiled bytecode or logging. This prevents render-to-html from being
permanently disabled when one page has an unresolved symbol (e.g. the
homepage stepper's <home).
Load spec/signals.sx and web/engine.sx for reactive primitives.
Skip test files and non-rendering directories (tests/, plans/, essays/).
Performance with JIT active (warm, single process, 2MB RSS):
- Aser (component expansion): 21-87ms — faster than Quart baseline
- SSR + shell: variable due to homepage <home fallback issue
- Geography total: ~500ms when JIT stays active
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- Enable lazy JIT in HTTP mode — pre-compile 24 compiler functions at startup
- Load spec/signals.sx + web/engine.sx for reactive primitives
- Recursive directory loading for subdirectory components (geography/, etc.)
- Re-bind native variadic assoc after stdlib.sx overwrites it
- Skip test files, plans/, essays/ directories during HTTP load
- Homepage aser: 21-38ms warm, Geography aser: 39-87ms warm
Remaining: render-to-html JIT gets disabled by <home symbol error on
first request (falls back to CEK). ~docs/page component missing for
some pages. Fix those for full parity with Quart.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Reverse hook syncs VM GLOBAL_SET mutations back to global_env so CEK reads
see JIT-written values. Isomorphic nav: store primitives, event-bridge,
client? predicate. Browser JS and bytecode rebuilt.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- def-store/use-store/clear-stores: OCaml primitives with global
mutable registry. Bypasses env scoping issues that prevented SX-level
stores from persisting across bytecode module boundaries.
- client? primitive: _is_client ref (false on server, true in browser).
Registered in primitives table for CALL_PRIM compatibility.
- Event-bridge island: rewritten to use document-level addEventListener
via effect + host-callback, fixing container-ref timing issue.
- Header island: uses def-store for idx/shade signals when client? is
true, plain signals when false (SSR compatibility).
- web-signals.sx: SX store definitions removed, OCaml primitives replace.
Isomorphic nav still fixme — client? works from K.eval but the JIT
"Not callable: nil" bug prevents proper primitive resolution during
render-to-dom hydration. Needs JIT investigation.
100 passed, 1 skipped, 0 failed.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
