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Convert the code in src/core/worker.js to use ES6 classes #12004

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Jun 17, 2020
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Convert the code in src/core/worker.js to use ES6 classes #12004

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37 changes: 17 additions & 20 deletions src/core/worker.js
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Original file line number Diff line number Diff line change
Expand Up @@ -37,39 +37,34 @@ import { MessageHandler } from "../shared/message_handler.js";
import { PDFWorkerStream } from "./worker_stream.js";
import { XRefParseException } from "./core_utils.js";

var WorkerTask = (function WorkerTaskClosure() {
// eslint-disable-next-line no-shadow
function WorkerTask(name) {
class WorkerTask {
constructor(name) {
this.name = name;
this.terminated = false;
this._capability = createPromiseCapability();
}

WorkerTask.prototype = {
get finished() {
return this._capability.promise;
},
}

finish() {
this._capability.resolve();
},
}

terminate() {
this.terminated = true;
},
}

ensureNotTerminated() {
if (this.terminated) {
throw new Error("Worker task was terminated");
}
},
};

return WorkerTask;
})();
}
}

var WorkerMessageHandler = {
setup(handler, port) {
class WorkerMessageHandler {
static setup(handler, port) {
var testMessageProcessed = false;
handler.on("test", function wphSetupTest(data) {
if (testMessageProcessed) {
Expand All @@ -96,8 +91,9 @@ var WorkerMessageHandler = {
handler.on("GetDocRequest", function wphSetupDoc(data) {
return WorkerMessageHandler.createDocumentHandler(data, port);
});
},
createDocumentHandler(docParams, port) {
}

static createDocumentHandler(docParams, port) {
// This context is actually holds references on pdfManager and handler,
// until the latter is destroyed.
var pdfManager;
Expand Down Expand Up @@ -662,13 +658,14 @@ var WorkerMessageHandler = {
docParams = null; // we don't need docParams anymore -- saving memory.
});
return workerHandlerName;
},
initializeFromPort(port) {
}

static initializeFromPort(port) {
var handler = new MessageHandler("worker", "main", port);
WorkerMessageHandler.setup(handler, port);
handler.send("ready", null);
},
};
}
}

function isMessagePort(maybePort) {
return (
Expand Down