Documents and demonstrates serializable CEK state. Type an expression,
step to any point, click Freeze to see the frozen SX. Click Thaw to
resume from the frozen state and get the result.
- New page at /sx/(geography.(cek.freeze))
- Nav entry under CEK Machine
- Interactive island demo with step/run/freeze/thaw buttons
- Documentation: the idea, freeze format, thaw/resume, what it enables
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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>
SPEC_MODULES + SPEC_MODULE_ORDER for frames/cek in platform_js.py,
PLATFORM_CEK_JS + CEK_FIXUPS_JS constants, auto-inclusion in
run_js_sx.py, 70+ RENAMES in js.sx. Python: CEK always-include in
bootstrap_py.py, eval_expr/trampoline overridden to cek_run in
platform_py.py with _tree_walk_* preserved for test runners.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Replace _Signal class (Python) and SxSignal constructor (JS) with plain
dicts keyed by "__signal". Nine platform accessor functions become ~20
lines of pure SX in signals.sx. type-of returns "dict" for signals;
signal? is now a structural predicate (dict? + has-key?).
Net: -168 lines platform, +120 lines SX. Zero platform primitives for
reactivity — signals compile to any host via the bootstrappers.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Reactive tracking (deref/computed/effect dep discovery) and island lifecycle
now use the general scoped effects system instead of parallel infrastructure.
Two scope names: "sx-reactive" for tracking context, "sx-island-scope" for
island disposable collection. Eliminates ~98 net lines: _TrackingContext class,
7 tracking context platform functions (Python + JS), *island-scope* global,
and corresponding RENAME_MAP entries. All 20 signal tests pass (17 original +
3 new scope integration tests), plus CEK/continuation/type tests clean.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Add `scope` special form to eval.sx: (scope name body...) or
(scope name :value v body...) — general dynamic scope primitive
- `provide` becomes sugar: (provide name value body...) calls scope
- Rename provide-push!/provide-pop! to scope-push!/scope-pop! throughout
all adapters (async, dom, html, sx) and platform implementations
- Update boundary.sx: Tier 5 now "Scoped effects" with scope-push!/
scope-pop! as primary, provide-push!/provide-pop! as aliases
- Add scope form handling to async adapter and aser wire format
- Update sx-browser.js, sx_ref.py (bootstrapped output)
- Add scopes.sx docs page, update provide/spreads/demo docs
- Update nav-data, page-functions, docs page definitions
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Spreads now emit their attrs into the nearest element's provide scope
instead of requiring per-child spread? checks at every intermediate
layer. emit! is tolerant (no-op when no provider), so spreads in
non-element contexts silently vanish.
- adapter-html: element/lake/marsh wrap children in provide, collect
emitted; removed 14 spread filters from fragment, forms, components
- adapter-sx: aser wraps result to catch spread values from fn calls;
aser-call uses provide with attr-parts/child-parts ordering
- adapter-async: same pattern for both render and aser paths
- adapter-dom: added emit! in spread dispatch + provide in element
rendering; kept spread? checks for reactive/island and DOM safety
- platform: emit! returns NIL when no provider instead of erroring
- 3 new aser tests: stored spread, nested element, silent drop
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>
Four new primitives for scoped downward value passing and upward
accumulation through the render tree. Specced in .sx, bootstrapped
to Python and JS across all adapters (eval, html, sx, dom, async).
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
New SX primitives for child-to-parent communication in the render tree:
- spread type: make-spread, spread?, spread-attrs — child injects attrs
onto parent element (class joins with space, style with semicolon)
- collect!/collected/clear-collected! — render-time accumulation with
dedup into named buckets
~cssx/tw is now a proper defcomp returning a spread value instead of a
macro wrapping children. ~cssx/flush reads collected "cssx" rules and
emits a single <style data-cssx> tag.
All four render adapters (html, async, dom, aser) handle spread values.
Both bootstraps (Python + JS) regenerated. Also fixes length→len in
cssx.sx (length was never a registered primitive).
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Add 14 new IO primitives to boundary.sx: web interop (request-form,
request-json, request-header, request-content-type, request-args-all,
request-form-all, request-headers-all, request-file-name), response
manipulation (set-response-header, set-response-status), ephemeral
state (state-get, state-set!), and timing (now, sleep).
All 19 reference handlers now have :returns type annotations using
types.sx vocabulary. Response meta (headers/status) flows through
context vars, applied by register_route_handlers after execution.
Only SSE endpoint remains in Python (async generator paradigm).
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Phase 6 — deftype: named type aliases, unions, records, and parameterized
types. Type definitions stored as plain dicts in *type-registry*. Includes
resolve-type for named type resolution, substitute-type-vars for
parameterized instantiation, subtype-resolved? for structural record
subtyping, and infer-type extension for record field type inference via get.
Phase 7 — defeffect: static effect annotations. Effects stored in
*effect-registry* and *effect-annotations*. Supports :effects keyword on
defcomp and define. Gradual: unannotated = all effects, empty list = pure.
check-body-walk validates effect containment at call sites.
Standard types defined: (maybe a), type-def, diagnostic, prim-param-sig.
Standard effects declared: io, mutation, render.
84/84 type system tests pass. Both Python and JS bootstrappers succeed.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Implements subtype checking, type inference, type narrowing, and
component call-site checking. All type logic is in types.sx (spec),
bootstrapped to every host. Adds test-types.sx with full coverage.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Two bugs fixed:
1. process-bindings used merge(env) which returns {} for Env objects
(Env is not a dict subclass). Changed to env-extend in render.sx
and adapter-async.sx. This caused "Undefined symbol: theme" etc.
2. async-aser-eval-call passed evaled-args list to async-invoke(&rest),
double-wrapping it. Changed to inline apply + coroutine check.
Also: bootstrap define-async into sx_ref.py (Phase 6), replace ~1000 LOC
hand-written async_eval_ref.py with 24-line thin re-export shim.
Test runner now uses Env (not flat dict) for render envs to catch scope bugs.
8 new regression tests (4 scope chain, 2 native callable arity, 2 render).
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Add page-helpers-demo page with defisland ~demo-client-runner (pure SX,
zero JS files) showing spec functions running on both server and client
- Fix _aser_component children serialization: flatten list results from map
instead of serialize(list) which wraps in parens creating ((div ...) ...)
that re-parses as invalid function call. Fixed in adapter-async.sx spec
and async_eval_ref.py
- Switch _eval_slot to use async_eval_ref.py when SX_USE_REF=1 (was
hardcoded to async_eval.py)
- Add Island type support to async_eval_ref.py: import, SSR rendering,
aser dispatch, thread-first, defisland in _ASER_FORMS
- Add server affinity check: components with :affinity :server expand
even when _expand_components is False
- Add diagnostic _aser_stack context to EvalError messages
- New spec files: adapter-async.sx, page-helpers.sx, platform_js.py
- Bootstrappers: page-helpers module support, performance.now() timing
- 0-arity lambda event handler fix in adapter-dom.sx
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
EvalError moved to types.py. All 27 files updated to import eval_expr,
trampoline, call_lambda, etc. directly from shared.sx.ref.sx_ref instead
of through the evaluator.py indirection layer. 320/320 spec tests pass.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- evaluator.py: replace 1200 lines of hand-written eval with thin shim
that re-exports from bootstrapped sx_ref.py
- bootstrap_py.py: emit all fn-bodied defines as `def` (not `lambda`),
flatten tail-position if/cond/case/when to if/elif with returns,
fix &rest handling in _emit_define_as_def
- platform_py.py: EvalError imports from evaluator.py so catches work
- __init__.py: remove SX_USE_REF conditional, always use bootstrapped
- tests/run.py: reset render_active after render tests for isolation
- Removes setrecursionlimit(5000) hack — no longer needed with flat code
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Fix qq-expand in eval.sx: use concat+list instead of append to prevent
nested lists from being flattened during quasiquote expansion
- Update append primitive to match spec ("if x is list, concatenate")
- Rebuild sx_ref.py with quasiquote fix
- Make relations.py self-contained: parse defrelation AST directly
without depending on the evaluator (25/25 tests pass)
- Replace hand-written JSEmitter with js.sx self-hosting bootstrapper
- Guard server-only tests in test-eval.sx with runtime check
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
eval-list only dispatches to the render adapter when render-active? is true.
render-to-html and aser set render-active! on entry. Pure evaluate() calls
no longer stringify component results through the render adapter.
Fixes component children parity: (defcomp ~wrap (&key &rest children) children)
now returns [1,2,3] in eval mode, renders to "123" only in render mode.
Parity: 112/116 pass (remaining 4 are hand-written evaluator.py bugs).
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
bootstrap_py.py (G0) and run_py_sx.py (G1) now both import static
platform sections from platform_py.py instead of duplicating them.
bootstrap_py.py shrinks from 2287 to 1176 lines — only the PyEmitter
transpiler and build orchestration remain.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
