35 lines
1 KiB
JavaScript
35 lines
1 KiB
JavaScript
/* Any copyright is dedicated to the Public Domain.
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* http://creativecommons.org/publicdomain/zero/1.0/. */
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/* import-globals-from /toolkit/components/workerloader/require.js */
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importScripts("resource://gre/modules/workers/require.js");
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const PromiseWorker = require("resource://gre/modules/workers/PromiseWorker.js");
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const Agent = {
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_file: null,
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open(path) {
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this._file = IOUtils.openFileForSyncReading(path);
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},
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close() {
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this._file.close();
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},
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};
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// This boilerplate connects the PromiseWorker to the Agent so
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// that messages from the main thread map to methods on the
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// Agent.
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const worker = new PromiseWorker.AbstractWorker();
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worker.dispatch = function (method, args = []) {
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return Agent[method](...args);
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};
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worker.postMessage = function (result, ...transfers) {
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self.postMessage(result, ...transfers);
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};
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worker.close = function () {
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self.close();
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};
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self.addEventListener("message", msg => worker.handleMessage(msg));
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self.addEventListener("unhandledrejection", function (error) {
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throw error.reason;
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});
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