russell@unturf.com
1b7de2c9c6
User-visible changes
- Cancel button — terminates the running worker. Pyodide's slow mandelbrot
no longer freezes the UI; click cancel and the elapsed counter freezes
at "(cancelled @ NNNN ms)".
- Live ms counter ticks per animation frame while a tier is busy, so the
Pyodide tier's ~5-15 s wait is visible instead of looking hung.
- Restyled to match lumbda.com: chunkfive wordmark, --green: #227842
(light) / #5ec07a (dark), lumbda-logo-green.png, lowercase "lumbda"
everywhere. Pulls fonts/chunkfive locally so the playground stays
self-contained.
Architecture
- All tier evaluations now run inside a Web Worker (wasm/app/worker.mjs)
so the main thread stays responsive. Cancel = worker.terminate(); next
eval respawns a fresh worker.
- Loaders use new URL("./...", import.meta.url) so paths resolve against
the loader file's own location — works identically in window and
worker contexts, no baseURL argument needed.
- C tier Emscripten build flipped to EXPORT_ES6=1; loader uses dynamic
`import()` of the factory module. Integration test updated accordingly.
- Python loader uses `import("pyodide.mjs")` (ES module) instead of
document.createElement, which doesn't exist in workers.
Bug fixes
- Asm tier state leak: running the same demo twice on a cached WASM
instance produced corrupted output (every other cell on row 2+ rendered
as " " instead of the expected shade char). Root cause: top-level eval
passed `global_env` as the env, so closures captured stale globals;
fixed by passing NIL — env_lookup falls back to the CURRENT global_env
via its existing two-pass walk. Multi-run regression added to the
functional test suite.
- fib-ack demo: (ack 3 4) was too heavy for Pyodide (minutes). Cut to
(ack 3 3) + (fib 20) max so every tier finishes in seconds.
Test discipline
- Root `make test-all` now includes `wasm-test`. Adding a language
feature without exercising it on all six implementations is no longer
possible by accident.
- Functional suite: 11 assertions (was 10) — adds asm multi-run stability.
- Integration + unit: still 20 + 8.
45 lines
1.4 KiB
JavaScript
45 lines
1.4 KiB
JavaScript
// wasm/asm/lumbda-asm.loader.js
|
|
// Asm tier loader — instantiates lumbda-asm.wasm and exposes evalLisp.
|
|
//
|
|
// Memory layout (mirrors lumbda.wat):
|
|
// 0x10000 output buffer (read after each call)
|
|
// 0x20000 source buffer (write before each call)
|
|
|
|
async function _bootstrap() {
|
|
const wasmURL = new URL("./lumbda-asm.wasm", import.meta.url).href;
|
|
const resp = await fetch(wasmURL);
|
|
const bytes = await resp.arrayBuffer();
|
|
const { instance } = await WebAssembly.instantiate(bytes);
|
|
const exp = instance.exports;
|
|
|
|
exp.lumbda_init();
|
|
|
|
const enc = new TextEncoder();
|
|
const dec = new TextDecoder();
|
|
|
|
return {
|
|
async evalLisp(src) {
|
|
const srcBytes = enc.encode(src);
|
|
const srcPtr = exp.lumbda_source_ptr();
|
|
const mem = new Uint8Array(exp.memory.buffer);
|
|
mem.set(srcBytes, srcPtr);
|
|
try {
|
|
exp.lumbda_eval(srcBytes.length);
|
|
} catch (e) {
|
|
return `error: ${e.message}`;
|
|
}
|
|
const outPtr = exp.lumbda_output_ptr();
|
|
const outLen = exp.lumbda_output_len();
|
|
return dec.decode(new Uint8Array(exp.memory.buffer, outPtr, outLen));
|
|
},
|
|
};
|
|
}
|
|
|
|
// Closure-encapsulated singleton (see lumbda-c.loader.js for rationale).
|
|
export const createAsmTier = (() => {
|
|
let tier = null;
|
|
return async () => {
|
|
if (!tier) tier = await _bootstrap();
|
|
return tier;
|
|
};
|
|
})();
|