80 lines
2.8 KiB
JavaScript
80 lines
2.8 KiB
JavaScript
/******************************************************************************
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* Copyright 2023 TypeFox GmbH
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* This program and the accompanying materials are made available under the
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* terms of the MIT License, which is available in the project root.
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******************************************************************************/
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import { EMPTY_STREAM, stream } from '../utils/stream.js';
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/**
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* The default scope implementation is based on a `Stream`. It has an optional _outer scope_ describing
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* the next level of elements, which are queried when a target element is not found in the stream provided
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* to this scope.
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*/
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export class StreamScope {
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constructor(elements, outerScope, options) {
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var _a;
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this.elements = elements;
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this.outerScope = outerScope;
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this.caseInsensitive = (_a = options === null || options === void 0 ? void 0 : options.caseInsensitive) !== null && _a !== void 0 ? _a : false;
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}
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getAllElements() {
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if (this.outerScope) {
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return this.elements.concat(this.outerScope.getAllElements());
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}
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else {
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return this.elements;
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}
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}
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getElement(name) {
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const local = this.caseInsensitive
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? this.elements.find(e => e.name.toLowerCase() === name.toLowerCase())
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: this.elements.find(e => e.name === name);
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if (local) {
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return local;
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}
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if (this.outerScope) {
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return this.outerScope.getElement(name);
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}
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return undefined;
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}
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}
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export class MapScope {
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constructor(elements, outerScope, options) {
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var _a;
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this.elements = new Map();
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this.caseInsensitive = (_a = options === null || options === void 0 ? void 0 : options.caseInsensitive) !== null && _a !== void 0 ? _a : false;
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for (const element of elements) {
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const name = this.caseInsensitive
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? element.name.toLowerCase()
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: element.name;
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this.elements.set(name, element);
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}
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this.outerScope = outerScope;
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}
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getElement(name) {
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const localName = this.caseInsensitive ? name.toLowerCase() : name;
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const local = this.elements.get(localName);
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if (local) {
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return local;
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}
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if (this.outerScope) {
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return this.outerScope.getElement(name);
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}
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return undefined;
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}
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getAllElements() {
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let elementStream = stream(this.elements.values());
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if (this.outerScope) {
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elementStream = elementStream.concat(this.outerScope.getAllElements());
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}
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return elementStream;
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}
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}
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export const EMPTY_SCOPE = {
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getElement() {
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return undefined;
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},
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getAllElements() {
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return EMPTY_STREAM;
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}
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};
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//# sourceMappingURL=scope.js.map
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