| /** |
| * @license |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| import type { Selector, Matcher } from './types'; |
| |
| export type { Selector, Matcher }; |
| |
| export function makeRefinable< |
| // Any subtype of Selector can be made refinable; but note we limit the value |
| // of refinedBy because it must also be accepted by matcherCreator. |
| TSelector extends Selector & { refinedBy: TSelector }, |
| TScope, |
| // To enable refinement, the implementation’s Match object must be usable as a |
| // Scope object itself. |
| TMatch extends TScope |
| >( |
| matcherCreator: (selector: TSelector) => Matcher<TScope, TMatch>, |
| ): (selector: TSelector) => Matcher<TScope, TMatch> { |
| return function createMatcherWithRefinement( |
| sourceSelector: TSelector, |
| ): Matcher<TScope, TMatch> { |
| const matcher = matcherCreator(sourceSelector); |
| |
| if (sourceSelector.refinedBy) { |
| const refiningSelector = createMatcherWithRefinement( |
| sourceSelector.refinedBy, |
| ); |
| |
| return async function* matchAll(scope) { |
| for await (const match of matcher(scope)) { |
| yield* refiningSelector(match); |
| } |
| }; |
| } |
| |
| return matcher; |
| }; |
| } |