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extract notebook session service; fix concurrent start/shutdown calls…
…; restore sessions
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,123 @@ | ||
| /*--------------------------------------------------------------------------------------------- | ||
| * Copyright (c) Microsoft Corporation. All rights reserved. | ||
| * Licensed under the MIT License. See License.txt in the project root for license information. | ||
| *--------------------------------------------------------------------------------------------*/ | ||
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| import { Uri as URI } from 'vscode'; | ||
|
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| interface ResourceMapKeyFn { | ||
| (resource: URI): string; | ||
| } | ||
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| class ResourceMapEntry<T> { | ||
| constructor(readonly uri: URI, readonly value: T) { } | ||
| } | ||
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| function isEntries<T>(arg: ResourceMap<T> | ResourceMapKeyFn | readonly (readonly [URI, T])[] | undefined): arg is readonly (readonly [URI, T])[] { | ||
| return Array.isArray(arg); | ||
| } | ||
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| export class ResourceMap<T> implements Map<URI, T> { | ||
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| private static readonly defaultToKey = (resource: URI) => resource.toString(); | ||
|
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| readonly [Symbol.toStringTag] = 'ResourceMap'; | ||
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| private readonly map: Map<string, ResourceMapEntry<T>>; | ||
| private readonly toKey: ResourceMapKeyFn; | ||
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| /** | ||
| * | ||
| * @param toKey Custom uri identity function, e.g use an existing `IExtUri#getComparison`-util | ||
| */ | ||
| constructor(toKey?: ResourceMapKeyFn); | ||
|
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| /** | ||
| * | ||
| * @param other Another resource which this maps is created from | ||
| * @param toKey Custom uri identity function, e.g use an existing `IExtUri#getComparison`-util | ||
| */ | ||
| constructor(other?: ResourceMap<T>, toKey?: ResourceMapKeyFn); | ||
|
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| /** | ||
| * | ||
| * @param other Another resource which this maps is created from | ||
| * @param toKey Custom uri identity function, e.g use an existing `IExtUri#getComparison`-util | ||
| */ | ||
| constructor(entries?: readonly (readonly [URI, T])[], toKey?: ResourceMapKeyFn); | ||
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| constructor(arg?: ResourceMap<T> | ResourceMapKeyFn | readonly (readonly [URI, T])[], toKey?: ResourceMapKeyFn) { | ||
| if (arg instanceof ResourceMap) { | ||
| this.map = new Map(arg.map); | ||
| this.toKey = toKey ?? ResourceMap.defaultToKey; | ||
| } else if (isEntries(arg)) { | ||
| this.map = new Map(); | ||
| this.toKey = toKey ?? ResourceMap.defaultToKey; | ||
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| for (const [resource, value] of arg) { | ||
| this.set(resource, value); | ||
| } | ||
| } else { | ||
| this.map = new Map(); | ||
| this.toKey = arg ?? ResourceMap.defaultToKey; | ||
| } | ||
| } | ||
|
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| set(resource: URI, value: T): this { | ||
| this.map.set(this.toKey(resource), new ResourceMapEntry(resource, value)); | ||
| return this; | ||
| } | ||
|
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| get(resource: URI): T | undefined { | ||
| return this.map.get(this.toKey(resource))?.value; | ||
| } | ||
|
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| has(resource: URI): boolean { | ||
| return this.map.has(this.toKey(resource)); | ||
| } | ||
|
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| get size(): number { | ||
| return this.map.size; | ||
| } | ||
|
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| clear(): void { | ||
| this.map.clear(); | ||
| } | ||
|
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| delete(resource: URI): boolean { | ||
| return this.map.delete(this.toKey(resource)); | ||
| } | ||
|
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| forEach(clb: (value: T, key: URI, map: Map<URI, T>) => void, thisArg?: any): void { | ||
| if (typeof thisArg !== 'undefined') { | ||
| clb = clb.bind(thisArg); | ||
| } | ||
| for (const [_, entry] of this.map) { | ||
| clb(entry.value, entry.uri, <any>this); | ||
| } | ||
| } | ||
|
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| *values(): IterableIterator<T> { | ||
| for (const entry of this.map.values()) { | ||
| yield entry.value; | ||
| } | ||
| } | ||
|
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| *keys(): IterableIterator<URI> { | ||
| for (const entry of this.map.values()) { | ||
| yield entry.uri; | ||
| } | ||
| } | ||
|
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| *entries(): IterableIterator<[URI, T]> { | ||
| for (const entry of this.map.values()) { | ||
| yield [entry.uri, entry.value]; | ||
| } | ||
| } | ||
|
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| *[Symbol.iterator](): IterableIterator<[URI, T]> { | ||
| for (const [, entry] of this.map) { | ||
| yield [entry.uri, entry.value]; | ||
| } | ||
| } | ||
| } |
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