add hw2

node_modules/vscode-jsonrpc/lib/common/sharedArrayCancellation.js

@@ -0,0 +1,76 @@
+"use strict";
+/* --------------------------------------------------------------------------------------------
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for license information.
+ * ------------------------------------------------------------------------------------------ */
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.SharedArrayReceiverStrategy = exports.SharedArraySenderStrategy = void 0;
+const cancellation_1 = require("./cancellation");
+var CancellationState;
+(function (CancellationState) {
+    CancellationState.Continue = 0;
+    CancellationState.Cancelled = 1;
+})(CancellationState || (CancellationState = {}));
+class SharedArraySenderStrategy {
+    constructor() {
+        this.buffers = new Map();
+    }
+    enableCancellation(request) {
+        if (request.id === null) {
+            return;
+        }
+        const buffer = new SharedArrayBuffer(4);
+        const data = new Int32Array(buffer, 0, 1);
+        data[0] = CancellationState.Continue;
+        this.buffers.set(request.id, buffer);
+        request.$cancellationData = buffer;
+    }
+    async sendCancellation(_conn, id) {
+        const buffer = this.buffers.get(id);
+        if (buffer === undefined) {
+            return;
+        }
+        const data = new Int32Array(buffer, 0, 1);
+        Atomics.store(data, 0, CancellationState.Cancelled);
+    }
+    cleanup(id) {
+        this.buffers.delete(id);
+    }
+    dispose() {
+        this.buffers.clear();
+    }
+}
+exports.SharedArraySenderStrategy = SharedArraySenderStrategy;
+class SharedArrayBufferCancellationToken {
+    constructor(buffer) {
+        this.data = new Int32Array(buffer, 0, 1);
+    }
+    get isCancellationRequested() {
+        return Atomics.load(this.data, 0) === CancellationState.Cancelled;
+    }
+    get onCancellationRequested() {
+        throw new Error(`Cancellation over SharedArrayBuffer doesn't support cancellation events`);
+    }
+}
+class SharedArrayBufferCancellationTokenSource {
+    constructor(buffer) {
+        this.token = new SharedArrayBufferCancellationToken(buffer);
+    }
+    cancel() {
+    }
+    dispose() {
+    }
+}
+class SharedArrayReceiverStrategy {
+    constructor() {
+        this.kind = 'request';
+    }
+    createCancellationTokenSource(request) {
+        const buffer = request.$cancellationData;
+        if (buffer === undefined) {
+            return new cancellation_1.CancellationTokenSource();
+        }
+        return new SharedArrayBufferCancellationTokenSource(buffer);
+    }
+}
+exports.SharedArrayReceiverStrategy = SharedArrayReceiverStrategy;