html.experimental.custom.tags/attributes for Microsoft/vscode#62976

extensions/html-language-features/server/src/utils/tagDefinitions.ts

@@ -0,0 +1,58 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the MIT License. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+import { ITagSet, IAttributeSet, HTMLTagSpecification } from 'vscode-html-languageservice';
+
+interface Tag {
+	label: string;
+	description: string;
+	attributes: Attribute[];
+}
+interface Attribute {
+	label: string;
+	description: string;
+}
+interface RawTagSet {
+	tags: Tag[];
+}
+interface RawAttributeSet {
+	attributes: Attribute[];
+}
+
+export function parseTagSet(source: string): ITagSet {
+	const tagSet: ITagSet = {};
+
+	let rawTagSet: RawTagSet;
+	try {
+		rawTagSet = JSON.parse(source);
+	} catch (err) {
+		return {};
+	}
+
+	rawTagSet.tags.forEach(c => {
+		tagSet[c.label] = new HTMLTagSpecification(c.description, c.attributes.map(a => a.label));
+	});
+
+	return tagSet;
+}
+
+export function parseAttributes(source: string): IAttributeSet {
+	const attributeSet: IAttributeSet = {};
+
+	let rawAttributeSet: RawAttributeSet;
+	try {
+		rawAttributeSet = JSON.parse(source);
+	} catch (err) {
+		return {};
+	}
+
+	rawAttributeSet.attributes.forEach(ag => {
+		attributeSet[ag.label] = {
+			...ag
+		};
+	});
+
+	return attributeSet;
+}