[json] language server & client as extension

extensions/json/server/src/jsonHover.ts

@@ -0,0 +1,70 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the MIT License. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+'use strict';
+
+
+import Parser = require('./jsonParser');
+import SchemaService = require('./jsonSchemaService');
+
+import {Hover, ITextDocument, TextDocumentPosition, Range, MarkedString, RemoteConsole} from 'vscode-languageserver';
+
+import {LinesModel} from './utils/lines';
+
+export class JSONHover {
+
+	private schemaService: SchemaService.IJSONSchemaService;
+
+	constructor(schemaService: SchemaService.IJSONSchemaService) {
+		this.schemaService = schemaService;
+	}
+
+	public doHover(document: ITextDocument, textDocumentPosition: TextDocumentPosition, lines: LinesModel, doc: Parser.JSONDocument): Promise<Hover> {
+
+		let offset = lines.offsetAt(textDocumentPosition.position);
+		let node = doc.getNodeFromOffset(offset);
+		let originalNode = node;
+
+		// use the property description when hovering over an object key
+		if (node && node.type === 'string') {
+			let stringNode = <Parser.StringASTNode>node;
+			if (stringNode.isKey) {
+				let propertyNode = <Parser.PropertyASTNode>node.parent;
+				node = propertyNode.value;
+
+			}
+		}
+
+		if (!node) {
+			return Promise.resolve(void 0);
+		}
+
+		return this.schemaService.getSchemaForResource(textDocumentPosition.uri, doc).then((schema) => {
+			if (schema) {
+				let matchingSchemas: Parser.IApplicableSchema[] = [];
+				doc.validate(schema.schema, matchingSchemas, node.start);
+
+				let description: string = null;
+				let contributonId: string = null;
+				matchingSchemas.every((s) => {
+					if (s.node === node && !s.inverted && s.schema) {
+						description = description || s.schema.description;
+						contributonId = contributonId || s.schema.id;
+					}
+					return true;
+				});
+
+				if (description) {
+					let range = Range.create(lines.positionAt(node.start), lines.positionAt(node.end));
+					let result: Hover = {
+						contents: [description],
+						range: range
+					};
+					return result;
+				}
+			}
+			return void 0;
+		});
+	}
+}