35 lines
1016 B
JavaScript
35 lines
1016 B
JavaScript
/*---------------------------------------------------------------------------------------------
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* Copyright (c) Microsoft Corporation. All rights reserved.
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* Licensed under the MIT License. See License.txt in the project root for license information.
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*--------------------------------------------------------------------------------------------*/
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export class SetMap {
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constructor() {
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this.map = new Map();
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}
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add(key, value) {
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let values = this.map.get(key);
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if (!values) {
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values = new Set();
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this.map.set(key, values);
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}
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values.add(value);
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}
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delete(key, value) {
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const values = this.map.get(key);
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if (!values) {
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return;
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}
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values.delete(value);
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if (values.size === 0) {
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this.map.delete(key);
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}
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}
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forEach(key, fn) {
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const values = this.map.get(key);
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if (!values) {
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return;
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}
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values.forEach(fn);
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}
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}
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