ef534c0cc1
Add enough BUILD files to make it possible to `bazel build packages/core/test` Also re-format BUILD.bazel files with Buildifier. Add a CI lint check that they stay formatted. PR Close #20768
73 lines
1.8 KiB
TypeScript
73 lines
1.8 KiB
TypeScript
/**
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* @license
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* Copyright Google Inc. All Rights Reserved.
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*
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* Use of this source code is governed by an MIT-style license that can be
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* found in the LICENSE file at https://angular.io/license
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*/
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import {stringify} from '../util';
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import {resolveForwardRef} from './forward_ref';
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/**
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* A unique object used for retrieving items from the {@link ReflectiveInjector}.
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*
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* Keys have:
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* - a system-wide unique `id`.
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* - a `token`.
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*
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* `Key` is used internally by {@link ReflectiveInjector} because its system-wide unique `id` allows
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* the
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* injector to store created objects in a more efficient way.
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*
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* `Key` should not be created directly. {@link ReflectiveInjector} creates keys automatically when
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* resolving
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* providers.
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* @deprecated No replacement
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*/
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export class ReflectiveKey {
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public readonly displayName: string;
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/**
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* Private
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*/
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constructor(public token: Object, public id: number) {
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if (!token) {
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throw new Error('Token must be defined!');
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}
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this.displayName = stringify(this.token);
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}
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/**
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* Retrieves a `Key` for a token.
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*/
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static get(token: Object): ReflectiveKey {
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return _globalKeyRegistry.get(resolveForwardRef(token));
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}
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/**
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* @returns the number of keys registered in the system.
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*/
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static get numberOfKeys(): number { return _globalKeyRegistry.numberOfKeys; }
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}
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export class KeyRegistry {
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private _allKeys = new Map<Object, ReflectiveKey>();
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get(token: Object): ReflectiveKey {
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if (token instanceof ReflectiveKey) return token;
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if (this._allKeys.has(token)) {
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return this._allKeys.get(token) !;
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}
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const newKey = new ReflectiveKey(token, ReflectiveKey.numberOfKeys);
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this._allKeys.set(token, newKey);
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return newKey;
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}
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get numberOfKeys(): number { return this._allKeys.size; }
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}
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const _globalKeyRegistry = new KeyRegistry();
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