allow schema to be deprecated (#227)

Author: aeschli

src/parser/jsonParser.ts

@@ -578,10 +578,12 @@ function validate(n: ASTNode | undefined, schema: JSONSchema, validationResult:
 		}
 
 		let deprecationMessage = schema.deprecationMessage;
-		if ((deprecationMessage || schema.deprecated) && node.parent) {
+		if (deprecationMessage || schema.deprecated) {
 			deprecationMessage = deprecationMessage || l10n.t('Value is deprecated');
+			let targetNode = node.parent?.type === 'property' ? node.parent : node;
+
 			validationResult.problems.push({
-				location: { offset: node.parent.offset, length: node.parent.length },
+				location: { offset: targetNode.offset, length: targetNode.length },
 				severity: DiagnosticSeverity.Warning,
 				message: deprecationMessage,
 				code: ErrorCode.Deprecated

src/test/parser.test.ts

@@ -2389,6 +2389,16 @@ suite('JSON Parser', () => {
 			assert.strictEqual(semanticErrors!.length, 1);
 		}
 
+		schema = {
+			deprecated: true,
+			type: 'object'
+		};
+		{
+			const { textDoc, jsonDoc } = toDocument('{"prop": 42}');
+			const semanticErrors = validate2(jsonDoc, textDoc, schema);
+			assert.strictEqual(semanticErrors!.length, 1);
+		}
+
 	});
 
 	test('Strings with spaces', function () {