35 lines
1.2 KiB
TypeScript
35 lines
1.2 KiB
TypeScript
/*---------------------------------------------------------------------------------------------
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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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import { Emitter, Event } from './event.js';
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export interface ISplice<T> {
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readonly start: number;
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readonly deleteCount: number;
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readonly toInsert: readonly T[];
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}
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export interface ISpliceable<T> {
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splice(start: number, deleteCount: number, toInsert: readonly T[]): void;
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}
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export interface ISequence<T> {
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readonly elements: T[];
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readonly onDidSplice: Event<ISplice<T>>;
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}
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export class Sequence<T> implements ISequence<T>, ISpliceable<T> {
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readonly elements: T[] = [];
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private readonly _onDidSplice = new Emitter<ISplice<T>>();
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readonly onDidSplice: Event<ISplice<T>> = this._onDidSplice.event;
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splice(start: number, deleteCount: number, toInsert: readonly T[] = []): void {
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this.elements.splice(start, deleteCount, ...toInsert);
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this._onDidSplice.fire({ start, deleteCount, toInsert });
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}
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}
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