All signal operations (computed, effect, batch, etc.) now dispatch
function calls through cek-call, which routes SX lambdas via cek-run
and native callables via apply. This replaces the invoke shim.
Key changes:
- cek.sx: add cek-call (defined before reactive-shift-deref), replace
invoke in subscriber disposal and ReactiveResetFrame handler
- signals.sx: replace all 11 invoke calls with cek-call
- js.sx: fix octal escape in js-quote-string (char-from-code 0)
- platform_js.py: fix JS append to match Python (list concat semantics),
add Continuation type guard in PLATFORM_CEK_JS, add scheduleIdle
safety check, module ordering (cek before signals)
- platform_py.py: fix ident-char regex (remove [ ] from valid chars),
module ordering (cek before signals)
- run_js_sx.py: emit PLATFORM_CEK_JS before transpiled spec files
- page-functions.sx: add cek and provide page functions for SX URLs
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Spread values from make-spread were crashing the wire format serializer:
- serialize() had no "spread" case, fell through to (str val) producing
Python repr "<shared.sx.ref.sx_ref._Spread...>" which was treated as
an undefined symbol
- aser-call/async-aser-call didn't handle spread children — now merges
spread attrs as keyword args into the parent element
- aser-fragment/async-aser-fragment didn't filter spreads — now filters
them (fragments have no parent element to merge into)
- serialize() now handles spread type: (make-spread {:key "val"})
Added 3 aser-spreads tests. All 562 tests pass.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Add \uXXXX unicode escape support to parser.py and parser.sx spec
- Add char-from-code primitive (Python chr(), JS String.fromCharCode())
- Fix variadic infix operators in both bootstrappers (js.sx, py.sx) —
(+ a b c d) was silently dropping terms, now left-folds correctly
- Rebootstrap sx_ref.py and sx-browser.js with all fixes
- Fix 3 pre-existing map-dict test failures in shared/sx/tests/run.py
- Add live demos alongside examples in spreads essay (side-by-side layout)
- Add scoped-effects plan: algebraic effects as unified foundation for
spread/collect/island/lake/signal/context
- Add foundations plan: CEK machine, the computational floor, three-axis
model (depth/topology/linearity), Curry-Howard correspondence
- Route both plans in page-functions.sx and nav-data.sx
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Extend the type annotation system from defcomp-only to fn/lambda params:
- Infrastructure: sf-lambda, py/js-collect-params-loop, and bootstrap_py.py
now recognize (name :as type) in param lists, extracting just the name
- bootstrap_py.py: add _extract_param_name() helper, fix _emit_for_each_stmt
- 521 type annotations across 22 .sx spec files (eval, types, adapters,
transpilers, engine, orchestration, deps, signals, router, prove, etc.)
- Zero behavioral change: annotations are metadata for static analysis only
- All bootstrappers (Python, JS, G1) pass, 81/81 spec tests pass
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Three bugs prevented islands from working during SX wire navigation:
1. components_for_request() only bundled Component and Macro defs, not
Island defs — client never received defisland definitions during
navigation (components_for_page for initial HTML shell was correct).
2. hydrate-island used morph-children which can't transfer addEventListener
event handlers from freshly rendered DOM to existing nodes. Changed to
clear+append so reactive DOM with live signal subscriptions is inserted
directly.
3. asyncRenderToDom (client-side async page eval) checked _component but
not _island on ~-prefixed names — islands fell through to generic eval
which failed. Now delegates to renderDomIsland.
4. setInterval_/setTimeout_ passed SX Lambda objects directly to native
timers. JS coerced them to "[object Object]" and tried to eval as code,
causing "missing ] after element list". Added _wrapSxFn to convert SX
lambdas to JS functions before passing to timers.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Both bootstrappers (JS + Python) now gate shift/reset behind --extensions
continuations flag. Without it, using reset/shift errors at runtime.
- JS bootstrapper: extracted Continuation/ShiftSignal types, sfReset/sfShift,
continuation? primitive, and typeOf handling into CONTINUATIONS_JS constant.
Extension wraps evalList, aserSpecial, and typeOf post-transpilation.
- Python bootstrapper: added special-forms.sx validation cross-check against
eval.sx dispatch, warns on mismatches.
- Added shared/sx/ref/special-forms.sx: 36 declarative form specs with syntax,
docs, tail-position, and examples. Used by bootstrappers for validation.
- Added ellipsis (...) support to both parser.py and parser.sx spec.
- Updated continuations essay to reflect optional extension architecture.
- Updated specs page and nav with special-forms.sx entry.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Add boundary.sx declaring all 34 I/O primitives, 32 page helpers, and 9
allowed boundary types. Runtime validation in boundary.py checks every
registration against the spec — undeclared primitives/helpers crash at
startup with SX_BOUNDARY_STRICT=1 (now set in both dev and prod).
Key changes:
- Move 5 I/O-in-disguise primitives (app-url, asset-url, config,
jinja-global, relations-from) from primitives.py to primitives_io.py
- Remove duplicate url-for/route-prefix from primitives.py (already in IO)
- Fix parse-datetime to return ISO string instead of raw datetime
- Add datetime→isoformat conversion in _convert_result at the edge
- Wrap page helper return values with boundary type validation
- Replace all SxExpr(f"...") patterns with sx_call() or _sx_fragment()
- Add assert declaration to primitives.sx
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Meta-circular evaluator: the SX language specifying its own semantics.
A thin bootstrap compiler per target (JS, Python, Rust) reads these
.sx files and emits a native evaluator.
Files:
- eval.sx: Core evaluator — type dispatch, special forms, TCO trampoline,
lambda/component/macro invocation, higher-order forms
- primitives.sx: Declarative specification of ~80 built-in pure functions
- render.sx: Three rendering modes (DOM, HTML string, SX wire format)
- parser.sx: Tokenizer, parser, and serializer specification
Platform-specific concerns (DOM ops, async I/O, HTML emission) are
declared as interfaces that each target implements.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
