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Add CEK Machine section under Geography with live island demos

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geography/cek.sx: overview page (three registers, deref-as-shift
explanation) + demo page with 5 live islands (counter, computed chain,
reactive attrs, stopwatch effect+cleanup, batch coalescing). Nav entry,
router routes, defpage definitions. CEK exports (cekRun, makeCekState,
makeReactiveResetFrame, evalExpr) added to Sx public API via
platform_js.py.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
giles
2026-03-14 01:37:16 +00:00
parent 203f9a49a1
commit f96506024e
7 changed files with 246 additions and 86 deletions
Download Patch File Download Diff File Expand all files Collapse all files

93
shared/static/scripts/sx-browser.js
View File

@@ -14,7 +14,7 @@
// =========================================================================
var NIL = Object.freeze({ _nil: true, toString: function() { return "nil"; } });
var SX_VERSION = "2026-03-14T01:00:32Z";
var SX_VERSION = "2026-03-14T01:23:35Z";
function isNil(x) { return x === NIL || x === null || x === undefined; }
function isSxTruthy(x) { return x !== false && !isNil(x); }
@@ -1391,7 +1391,7 @@ var d2 = hexDigitValue(nth(source, pos));
var _ = (pos = (pos + 1));
var d3 = hexDigitValue(nth(source, pos));
var _ = (pos = (pos + 1));
buf = (String(buf) + String(charFromCode(((((d0 * 4096) + (d1 * 256)) + (d2 * 16)) + d3))));
buf = (String(buf) + String(charFromCode((d0 * 4096))));
continue; } } else { buf = (String(buf) + String((isSxTruthy((esc == "n")) ? "\n" : (isSxTruthy((esc == "t")) ? "\t" : (isSxTruthy((esc == "r")) ? "\r" : esc)))));
pos = (pos + 1);
continue; } } } else { buf = (String(buf) + String(ch));
@@ -6442,87 +6442,6 @@ return forEach(function(d) { return invoke(d); }, subDisposers); });
};
// =========================================================================
// Extension: Delimited continuations (shift/reset)
// =========================================================================
function Continuation(fn) { this.fn = fn; }
Continuation.prototype._continuation = true;
Continuation.prototype.call = function(value) { return this.fn(value !== undefined ? value : NIL); };
function ShiftSignal(kName, body, env) {
this.kName = kName;
this.body = body;
this.env = env;
}
PRIMITIVES["continuation?"] = function(x) { return x != null && x._continuation === true; };
var _resetResume = [];
function sfReset(args, env) {
var body = args[0];
try {
return trampoline(evalExpr(body, env));
} catch (e) {
if (e instanceof ShiftSignal) {
var sig = e;
var cont = new Continuation(function(value) {
if (value === undefined) value = NIL;
_resetResume.push(value);
try {
return trampoline(evalExpr(body, env));
} finally {
_resetResume.pop();
}
});
var sigEnv = merge(sig.env);
sigEnv[sig.kName] = cont;
return trampoline(evalExpr(sig.body, sigEnv));
}
throw e;
}
}
function sfShift(args, env) {
if (_resetResume.length > 0) {
return _resetResume[_resetResume.length - 1];
}
var kName = symbolName(args[0]);
var body = args[1];
throw new ShiftSignal(kName, body, env);
}
// Wrap evalList to intercept reset/shift
var _baseEvalList = evalList;
evalList = function(expr, env) {
var head = expr[0];
if (isSym(head)) {
var name = head.name;
if (name === "reset") return sfReset(expr.slice(1), env);
if (name === "shift") return sfShift(expr.slice(1), env);
}
return _baseEvalList(expr, env);
};
// Wrap aserSpecial to handle reset/shift in SX wire mode
if (typeof aserSpecial === "function") {
var _baseAserSpecial = aserSpecial;
aserSpecial = function(name, expr, env) {
if (name === "reset") return sfReset(expr.slice(1), env);
if (name === "shift") return sfShift(expr.slice(1), env);
return _baseAserSpecial(name, expr, env);
};
}
// Wrap typeOf to recognize continuations
var _baseTypeOf = typeOf;
typeOf = function(x) {
if (x != null && x._continuation) return "continuation";
return _baseTypeOf(x);
};
// =========================================================================
// Async IO: Promise-aware rendering for client-side IO primitives
// =========================================================================
@@ -7320,6 +7239,14 @@ return forEach(function(d) { return invoke(d); }, subDisposers); });
context: sxContext,
emit: sxEmit,
emitted: sxEmitted,
cekRun: cekRun,
makeCekState: makeCekState,
makeCekValue: makeCekValue,
cekStep: cekStep,
cekTerminal: cekTerminal_p,
cekValue: cekValue,
makeReactiveResetFrame: makeReactiveResetFrame,
evalExpr: evalExpr,
_version: "ref-2.0 (boot+dom+engine+html+orchestration+parser+sx, bootstrap-compiled)"
};

11
shared/sx/ref/platform_js.py
View File

@@ -3076,7 +3076,7 @@ def fixups_js(has_html, has_sx, has_dom, has_signals=False, has_deps=False, has_
return "\n".join(lines)
def public_api_js(has_html, has_sx, has_dom, has_engine, has_orch, has_boot, has_parser, adapter_label, has_deps=False, has_router=False, has_signals=False, has_page_helpers=False):
def public_api_js(has_html, has_sx, has_dom, has_engine, has_orch, has_boot, has_parser, adapter_label, has_deps=False, has_router=False, has_signals=False, has_page_helpers=False, has_cek=False):
# Parser: use compiled sxParse from parser.sx, or inline a minimal fallback
if has_parser:
parser = '''
@@ -3272,6 +3272,15 @@ def public_api_js(has_html, has_sx, has_dom, has_engine, has_orch, has_boot, has
api_lines.append(' context: sxContext,')
api_lines.append(' emit: sxEmit,')
api_lines.append(' emitted: sxEmitted,')
if has_cek:
api_lines.append(' cekRun: cekRun,')
api_lines.append(' makeCekState: makeCekState,')
api_lines.append(' makeCekValue: makeCekValue,')
api_lines.append(' cekStep: cekStep,')
api_lines.append(' cekTerminal: cekTerminal_p,')
api_lines.append(' cekValue: cekValue,')
api_lines.append(' makeReactiveResetFrame: makeReactiveResetFrame,')
api_lines.append(' evalExpr: evalExpr,')
api_lines.append(f' _version: "{version}"')
api_lines.append(' };')
api_lines.append('')

2
shared/sx/ref/run_js_sx.py
View File

@@ -226,7 +226,7 @@ def compile_ref_to_js(
parts.append(CONTINUATIONS_JS)
if has_dom:
parts.append(ASYNC_IO_JS)
parts.append(public_api_js(has_html, has_sx, has_dom, has_engine, has_orch, has_boot, has_parser, adapter_label, has_deps, has_router, has_signals, has_page_helpers))
parts.append(public_api_js(has_html, has_sx, has_dom, has_engine, has_orch, has_boot, has_parser, adapter_label, has_deps, has_router, has_signals, has_page_helpers, has_cek))
parts.append(EPILOGUE)
build_ts = datetime.now(timezone.utc).strftime("%Y-%m-%dT%H:%M:%SZ")