Adopt new css provider interface

extensions/css-language-features/server/src/customData.ts

@@ -0,0 +1,47 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the MIT License. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+import { CSSData, ICSSDataProvider } from 'vscode-css-languageservice';
+import * as fs from 'fs';
+
+export function getDataProviders(dataPaths: string[]): ICSSDataProvider[] {
+	const providers = dataPaths.map(p => {
+		if (fs.existsSync(p)) {
+			const data = parseCSSData(fs.readFileSync(p, 'utf-8'));
+			return {
+				provideProperties: () => data.properties || [],
+				provideAtDirectives: () => data.atDirectives || [],
+				providePseudoClasses: () => data.pseudoClasses || [],
+				providePseudoElements: () => data.pseudoElements || []
+			};
+		} else {
+			return {
+				provideProperties: () => [],
+				provideAtDirectives: () => [],
+				providePseudoClasses: () => [],
+				providePseudoElements: () => []
+			};
+		}
+	});
+
+	return providers;
+}
+
+function parseCSSData(source: string): CSSData {
+	let rawData: any;
+
+	try {
+		rawData = JSON.parse(source);
+	} catch (err) {
+		return {};
+	}
+
+	return {
+		properties: rawData.properties || [],
+		atDirectives: rawData.atdirectives || [],
+		pseudoClasses: rawData.pseudoclasses || [],
+		pseudoElements: rawData.pseudoelements || []
+	};
+}