[json] mention setting to change limit

extensions/json-language-features/client/src/jsonMain.ts

@@ -44,6 +44,10 @@ namespace SchemaAssociationNotification {
 	export const type: NotificationType<ISchemaAssociations, any> = new NotificationType('json/schemaAssociations');
 }
 
+namespace ResultLimitReachedNotification {
+	export const type: NotificationType<string, any> = new NotificationType('json/resultLimitReached');
+}
+
 interface IPackageInfo {
 	name: string;
 	version: string;
@@ -270,6 +274,12 @@ export function activate(context: ExtensionContext) {
 		updateFormatterRegistration();
 		toDispose.push({ dispose: () => rangeFormatting && rangeFormatting.dispose() });
 		toDispose.push(workspace.onDidChangeConfiguration(e => e.affectsConfiguration('html.format.enable') && updateFormatterRegistration()));
+
+
+		client.onNotification(ResultLimitReachedNotification.type, message => {
+			window.showInformationMessage(`${message}\nUse setting 'json.maxItemsComputed' to configure the limit.`);
+		});
+
 	});
 
 	let languageConfiguration: LanguageConfiguration = {

extensions/json-language-features/server/README.md

@@ -63,6 +63,7 @@ The server supports the following settings:
 	  - `fileMatch`: an array of file names or paths (separated by `/`). `*` can be used as a wildcard.
 	  - `url`: The URL of the schema, optional when also a schema is provided.
 	  - `schema`: The schema content.
+    - `resultLimit`: The max number foldig ranges and otline symbols to be computed (for performance reasons)
 
 ```json
 	{
@@ -153,6 +154,16 @@ Notification:
 - method: 'json/schemaContent'
 - params: `string` the URL of the schema that has changed.
 
+### Item Limit
+
+If the setting `resultLimit` is set, the JSON language server will limit the number of folding ranges and document symbols computed.
+When the limit is reached, a notification `json/resultLimitReached` is sent that can be shown that camn be shown to the user.
+
+Notification:
+- method: 'json/resultLimitReached'
+- params: a human readable string to show to the user.
+
+
 ## Try
 
 The JSON language server is shipped with [Visual Studio Code](https://code.visualstudio.com/) as part of the built-in VSCode extension `json-language-features`. The server is started when the first JSON file is opened. The [VSCode JSON documentation](https://code.visualstudio.com/docs/languages/json) for detailed information on the user experience and has more information on how to configure the language support.

extensions/json-language-features/server/src/jsonServerMain.ts

@@ -35,6 +35,10 @@ namespace SchemaContentChangeNotification {
 	export const type: NotificationType<string, any> = new NotificationType('json/schemaContent');
 }
 
+namespace ResultLimitReachedNotification {
+	export const type: NotificationType<string, any> = new NotificationType('json/resultLimitReached');
+}
+
 namespace ForceValidateRequest {
 	export const type: RequestType<string, Diagnostic[], any, any> = new RequestType('json/validate');
 }
@@ -211,7 +215,7 @@ namespace LimitExceededWarnings {
 			} else {
 				warning = { features: { [name]: name } };
 				warning.timeout = setTimeout(() => {
-					connection.window.showInformationMessage(`${posix.basename(uri)}: For performance reasons, ${Object.keys(warning.features).join(' and ')} have been limited to ${resultLimit} items.`);
+					connection.sendNotification(ResultLimitReachedNotification.type, `${posix.basename(uri)}: For performance reasons, ${Object.keys(warning.features).join(' and ')} have been limited to ${resultLimit} items.`);
 					warning.timeout = undefined;
 				}, 2000);
 				pendingWarnings[uri] = warning;