Polyscript workers by name

Author: WebReflection

docs/index.js

@@ -7,6 +7,7 @@ import { registry as defaultRegistry, prefixes, configs } from './interpreters.j
 import { getRuntimeID } from './loader.js';
 import { addAllListeners } from './listeners.js';
 import { Hook, XWorker as XW } from './xworker.js';
+import { workers, workersHandler } from './workers.js';
 import { polluteJS, js as jsHooks, code as codeHooks } from './hooks.js';
 import workerURL from './worker/url.js';
 
@@ -72,6 +73,8 @@ export const handleCustomType = async (node) => {
                     });
                     defineProperty(node, 'xworker', { value: xworker });
                     resolve({ type, xworker });
+                    const workerName = node.getAttribute('name');
+                    if (workerName) workers[workerName].resolve(xworker.ready);
                     return;
                 }
             }
@@ -118,6 +121,7 @@ export const handleCustomType = async (node) => {
                 config: resolved.config,
                 currentScript: type.startsWith('_') ? null : node,
                 js_modules: JSModules,
+                workers: workersHandler,
             });
 
             // patch methods accordingly to hooks (and only if needed)

docs/index.js.map

@@ -1,6 +1,7 @@
 import fetch from '@webreflection/fetch';
 import { $ } from 'basic-devtools';
 
+import { workers, workersHandler } from './workers.js';
 import $xworker from './worker/class.js';
 import workerURL from './worker/url.js';
 import { getRuntime, getRuntimeID } from './loader.js';
@@ -65,6 +66,7 @@ const execute = async (currentScript, source, XWorker, isAsync) => {
             XWorker,
             currentScript,
             js_modules: JSModules,
+            workers: workersHandler,
         });
         dispatch(currentScript, type, 'ready');
         const result = module[isAsync ? 'runAsync' : 'run'](interpreter, content);
@@ -122,7 +124,7 @@ export const handle = async (script) => {
         // allow a shared config among scripts, beside interpreter,
         // and/or source code with different config or interpreter
         const {
-            attributes: { async: isAsync, config, env, target, version },
+            attributes: { async: isAsync, config, env, name: wn, target, version },
             src,
             type,
         } = script;
@@ -140,12 +142,14 @@ export const handle = async (script) => {
             const xworker = new XWorker(url, {
                 ...nodeInfo(script, type),
                 async: !!isAsync,
-                config: configValue
+                config: configValue,
             });
             handled.set(
                 defineProperty(script, 'xworker', { value: xworker }),
                 { xworker }
             );
+            const workerName = wn?.value;
+            if (workerName) workers[workerName].resolve(xworker.ready);
             return;
         }
         /* c8 ignore stop */

esm/custom.js

@@ -204,6 +204,28 @@ add('message', ({ data: { options, config: baseURL, configURL, code, hooks } })
             // run either sync or async code in the worker
             await details[name](interpreter, code);
 
+            if (['micropython', 'pyodide'].includes(details.type)) {
+                // this dance is required due Pyodide issues with runtime sync exports
+                // or MicroPython issue with `runPython` not returning values
+                const polyscript = 'polyscript';
+                const workers = `__${polyscript}_workers__`;
+                const exports = '__export__';
+                interpreter.runPython([
+                    `import js as ${workers}`,
+                    `${workers}.${workers} = "${exports}" in locals() and ${exports} or []`,
+                    `del ${workers}`,
+                ].join('\n'));
+                const list = [...globalThis[workers]];
+                delete globalThis[workers];
+                if (list.length) {
+                    interpreter.runPython([
+                        `from ${polyscript} import xworker as ${workers}`,
+                        ...list.map(util => `${workers}.sync.${util} = ${util}`),
+                        `del ${workers}`,
+                    ].join('\n'));
+                }
+            }
+
             // notify worker done executing
             if (currentScript) notify('done');
             postMessage('polyscript:done');

esm/script-handler.js

@@ -0,0 +1,14 @@
+// REQUIRES INTEGRATION TEST
+/* c8 ignore start */
+export const workers = new Proxy(new Map, {
+  get(map, name) {
+    if (!map.has(name))
+      map.set(name, Promise.withResolvers());
+    return map.get(name);
+  },
+});
+
+export const workersHandler = new Proxy(workers, {
+  get: (_, name) => workers[name].promise.then(w => w.sync),
+});
+/* c8 ignore stop */

esm/worker/_template.js

@@ -91,6 +91,6 @@
         "to-json-callback": "^0.1.1"
     },
     "worker": {
-        "blob": "sha256-b+rQo4UjotSb69yF8u3W6zCnHV8eW55yotbdVICsICY="
+        "blob": "sha256-zrvckOW/DJa6Ds33kWWyNZtvV7aajCLCG+5LnBkpLiA="
     }
 }

esm/workers.js

@@ -5,5 +5,5 @@
         <meta name="viewport" content="width=device-width, initial-scale=1.0" />
         <title>polyscript integration tests</title>
     </head>
-    <body><ul><li><strong>micropython</strong><ul><li><a href="/test/integration/interpreter/micropython/bootstrap.html">bootstrap</a></li><li><a href="/test/integration/interpreter/micropython/config-json.html">config-json</a></li><li><a href="/test/integration/interpreter/micropython/config-object.html">config-object</a></li><li><a href="/test/integration/interpreter/micropython/current-script.html">current-script</a></li><li><a href="/test/integration/interpreter/micropython/custom-hooks.html">custom-hooks</a></li><li><a href="/test/integration/interpreter/micropython/fetch.html">fetch</a></li><li><a href="/test/integration/interpreter/micropython/interpreter-local.html">interpreter-local</a></li><li><a href="/test/integration/interpreter/micropython/mip.html">mip</a></li><li><a href="/test/integration/interpreter/micropython/no-type.html">no-type</a></li><li><a href="/test/integration/interpreter/micropython/ready-done.html">ready-done</a></li><li><a href="/test/integration/interpreter/micropython/storage.html">storage</a></li><li><a href="/test/integration/interpreter/micropython/worker-attribute.html">worker-attribute</a></li><li><a href="/test/integration/interpreter/micropython/worker-bad.html">worker-bad</a></li><li><a href="/test/integration/interpreter/micropython/worker-empty-attribute.html">worker-empty-attribute</a></li><li><a href="/test/integration/interpreter/micropython/worker-error.html">worker-error</a></li><li><a href="/test/integration/interpreter/micropython/worker-lua.html">worker-lua</a></li><li><a href="/test/integration/interpreter/micropython/worker-tag.html">worker-tag</a></li><li><a href="/test/integration/interpreter/micropython/worker-window.html">worker-window</a></li><li><a href="/test/integration/interpreter/micropython/worker.html">worker</a></li></ul><li><strong>pyodide</strong><ul><li><a href="/test/integration/interpreter/pyodide/bootstrap.html">bootstrap</a></li><li><a href="/test/integration/interpreter/pyodide/button.html">button</a></li><li><a href="/test/integration/interpreter/pyodide/config-json.html">config-json</a></li><li><a href="/test/integration/interpreter/pyodide/fetch.html">fetch</a></li><li><a href="/test/integration/interpreter/pyodide/sync.html">sync</a></li><li><a href="/test/integration/interpreter/pyodide/worker-error.html">worker-error</a></li><li><a href="/test/integration/interpreter/pyodide/worker-transform.html">worker-transform</a></li><li><a href="/test/integration/interpreter/pyodide/worker.html">worker</a></li></ul><li><strong>ruby-wasm-wasi</strong><ul><li><a href="/test/integration/interpreter/ruby-wasm-wasi/bootstrap.html">bootstrap</a></li></ul><li><strong>wasmoon</strong><ul><li><a href="/test/integration/interpreter/wasmoon/bootstrap.html">bootstrap</a></li><li><a href="/test/integration/interpreter/wasmoon/worker.html">worker</a></li></ul><li><strong>webr</strong><ul><li><a href="/test/integration/interpreter/webr/just-click.html">just-click</a></li></ul></ul></body>
+    <body><ul><li><strong>micropython</strong><ul><li><a href="/test/integration/interpreter/micropython/bootstrap.html">bootstrap</a></li><li><a href="/test/integration/interpreter/micropython/config-json.html">config-json</a></li><li><a href="/test/integration/interpreter/micropython/config-object.html">config-object</a></li><li><a href="/test/integration/interpreter/micropython/current-script.html">current-script</a></li><li><a href="/test/integration/interpreter/micropython/custom-hooks.html">custom-hooks</a></li><li><a href="/test/integration/interpreter/micropython/fetch.html">fetch</a></li><li><a href="/test/integration/interpreter/micropython/interpreter-local.html">interpreter-local</a></li><li><a href="/test/integration/interpreter/micropython/mip.html">mip</a></li><li><a href="/test/integration/interpreter/micropython/no-type.html">no-type</a></li><li><a href="/test/integration/interpreter/micropython/ready-done.html">ready-done</a></li><li><a href="/test/integration/interpreter/micropython/storage.html">storage</a></li><li><a href="/test/integration/interpreter/micropython/worker-attribute.html">worker-attribute</a></li><li><a href="/test/integration/interpreter/micropython/worker-bad.html">worker-bad</a></li><li><a href="/test/integration/interpreter/micropython/worker-empty-attribute.html">worker-empty-attribute</a></li><li><a href="/test/integration/interpreter/micropython/worker-error.html">worker-error</a></li><li><a href="/test/integration/interpreter/micropython/worker-lua.html">worker-lua</a></li><li><a href="/test/integration/interpreter/micropython/worker-tag.html">worker-tag</a></li><li><a href="/test/integration/interpreter/micropython/worker-window.html">worker-window</a></li><li><a href="/test/integration/interpreter/micropython/worker.html">worker</a></li><li><a href="/test/integration/interpreter/micropython/workers.html">workers</a></li></ul><li><strong>pyodide</strong><ul><li><a href="/test/integration/interpreter/pyodide/bootstrap.html">bootstrap</a></li><li><a href="/test/integration/interpreter/pyodide/button.html">button</a></li><li><a href="/test/integration/interpreter/pyodide/config-json.html">config-json</a></li><li><a href="/test/integration/interpreter/pyodide/fetch.html">fetch</a></li><li><a href="/test/integration/interpreter/pyodide/sync.html">sync</a></li><li><a href="/test/integration/interpreter/pyodide/worker-error.html">worker-error</a></li><li><a href="/test/integration/interpreter/pyodide/worker-transform.html">worker-transform</a></li><li><a href="/test/integration/interpreter/pyodide/worker.html">worker</a></li></ul><li><strong>ruby-wasm-wasi</strong><ul><li><a href="/test/integration/interpreter/ruby-wasm-wasi/bootstrap.html">bootstrap</a></li></ul><li><strong>wasmoon</strong><ul><li><a href="/test/integration/interpreter/wasmoon/bootstrap.html">bootstrap</a></li><li><a href="/test/integration/interpreter/wasmoon/worker.html">worker</a></li></ul><li><strong>webr</strong><ul><li><a href="/test/integration/interpreter/webr/just-click.html">just-click</a></li></ul></ul></body>
 </html>

package.json

@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <script type="module">
+        import { init } from '../utils.js';
+        init('micropython');
+    </script>
+</head>
+<body>
+  <script type="micropython" async>
+    import js
+    from polyscript import workers
+
+    js.document.body.append("waiting Pyodide version ... ")
+
+    print("waiting for test worker ...")
+    test = await workers["test"]
+    print("test worker ready ...")
+
+    print("waiting for test.pyodide_version() ...")
+    version = await test.pyodide_version()
+    print("done")
+
+    js.document.body.append(version)
+    js.document.documentElement.classList.add("ok")
+  </script>
+  <script type="pyodide" name="test" worker>
+    def pyodide_version():
+        import sys
+        return sys.version
+
+    __export__ = ['pyodide_version']
+  </script>
+</body>
+</html>

test/integration.html

@@ -57,4 +57,9 @@ module.exports = (playwright, baseURL) => {
         await page.goto(`${baseURL}/storage.html`);
         await page.waitForSelector(`html.ready.main.worker`);
     });
+
+    test('MicroPython using workers', async ({ page }) => {
+        await page.goto(`${baseURL}/workers.html`);
+        await page.waitForSelector(`html.ok`);
+    });
 };