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Unicode escapes, variadic infix fix, spreads demos, scoped-effects + foundations plans

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- 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>
This commit is contained in:
giles
2026-03-13 12:03:58 +00:00
parent 28a6560963
commit 214963ea6a
15 changed files with 1323 additions and 38 deletions
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19
shared/static/scripts/sx-browser.js
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@@ -14,7 +14,7 @@
// =========================================================================
var NIL = Object.freeze({ _nil: true, toString: function() { return "nil"; } });
var SX_VERSION = "2026-03-13T05:11:12Z";
var SX_VERSION = "2026-03-13T11:02:33Z";
function isNil(x) { return x === NIL || x === null || x === undefined; }
function isSxTruthy(x) { return x !== false && !isNil(x); }
@@ -410,6 +410,7 @@
PRIMITIVES["ends-with?"] = function(s, p) { var str = String(s); return str.indexOf(p, str.length - p.length) !== -1; };
PRIMITIVES["slice"] = function(c, a, b) { if (!c || typeof c.slice !== "function") { console.error("[sx-debug] slice called on non-sliceable:", typeof c, c, "a=", a, "b=", b, new Error().stack); return []; } return b !== undefined ? c.slice(a, b) : c.slice(a); };
PRIMITIVES["substring"] = function(s, a, b) { return String(s).substring(a, b); };
PRIMITIVES["char-from-code"] = function(n) { return String.fromCharCode(n); };
PRIMITIVES["string-length"] = function(s) { return String(s).length; };
PRIMITIVES["string-contains?"] = function(s, sub) { return String(s).indexOf(String(sub)) !== -1; };
PRIMITIVES["concat"] = function() {
@@ -774,6 +775,7 @@
return s.replace(/\\/g, "\\\\").replace(/"/g, '\\"').replace(/\n/g, "\\n").replace(/\t/g, "\\t");
}
function sxExprSource(e) { return typeof e === "string" ? e : String(e); }
var charFromCode = PRIMITIVES["char-from-code"];
// === Transpiled from eval ===
@@ -1382,6 +1384,7 @@ if (isSxTruthy(sxOr((ch == " "), (ch == "\t"), (ch == "\n"), (ch == "\r")))) { p
continue; } else if (isSxTruthy((ch == ";"))) { pos = (pos + 1);
skipComment();
continue; } else { return NIL; } } } else { return NIL; } } };
var hexDigitValue = function(ch) { return indexOf_("0123456789abcdef", lower(ch)); };
var readString = function() { pos = (pos + 1);
return (function() {
var buf = "";
@@ -1389,9 +1392,19 @@ return (function() {
if (isSxTruthy((ch == "\""))) { pos = (pos + 1);
return NIL; } else if (isSxTruthy((ch == "\\"))) { pos = (pos + 1);
{ var esc = nth(source, pos);
buf = (String(buf) + String((isSxTruthy((esc == "n")) ? "\n" : (isSxTruthy((esc == "t")) ? "\t" : (isSxTruthy((esc == "r")) ? "\r" : esc)))));
if (isSxTruthy((esc == "u"))) { pos = (pos + 1);
{ var d0 = hexDigitValue(nth(source, pos));
var _ = (pos = (pos + 1));
var d1 = hexDigitValue(nth(source, pos));
var _ = (pos = (pos + 1));
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))));
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));
continue; } } } else { buf = (String(buf) + String(ch));
pos = (pos + 1);
continue; } } } } };
readStrLoop();