#28538 Proposed API to read configuration in a multi root workspace

src/vs/vscode.proposed.d.ts

@@ -353,6 +353,15 @@ declare module 'vscode' {
 		 * @return A [disposable](#Disposable) that unregisters this provider when being disposed.
 		 */
 		export function registerTaskProvider(type: string, provider: TaskProvider): Disposable;
+
+
+		export function getConfiguration2(section?: string, resource?: Uri): WorkspaceConfiguration2;
+	}
+
+	export interface WorkspaceConfiguration2 extends WorkspaceConfiguration {
+
+		inspect<T>(section: string): { key: string; defaultValue?: T; globalValue?: T; workspaceValue?: T, folderValue?: T } | undefined;
+
 	}
 
 	export namespace window {

src/vs/workbench/api/node/extHost.api.impl.ts

@@ -429,6 +429,9 @@ export function createApiFactory(
 			getConfiguration: (section?: string): vscode.WorkspaceConfiguration => {
 				return extHostConfiguration.getConfiguration(section);
 			},
+			getConfiguration2: proposedApiFunction(extension, (section?: string, resource?: vscode.Uri): vscode.WorkspaceConfiguration => {
+				return extHostConfiguration.getConfiguration(section, <URI>resource);
+			}),
 			registerTaskProvider: proposedApiFunction(extension, (type: string, provider: vscode.TaskProvider) => {
 				return extHostTask.registerTaskProvider(extension, provider);
 			})

src/vs/workbench/api/node/extHostConfiguration.ts

@@ -5,6 +5,7 @@
 'use strict';
 
 import { mixin } from 'vs/base/common/objects';
+import URI from 'vs/base/common/uri';
 import Event, { Emitter } from 'vs/base/common/event';
 import { WorkspaceConfiguration } from 'vscode';
 import { ExtHostWorkspace } from 'vs/workbench/api/node/extHostWorkspace';
@@ -46,11 +47,11 @@ export class ExtHostConfiguration extends ExtHostConfigurationShape {
 		this._onDidChangeConfiguration.fire(undefined);
 	}
 
-	getConfiguration(section?: string): WorkspaceConfiguration {
+	getConfiguration(section?: string, resource?: URI): WorkspaceConfiguration {
 
 		const config = section
-			? lookUp(this._configuration.getValue(), section)
-			: this._configuration.getValue();
+			? lookUp(this._configuration.getValue(null, { resource }), section)
+			: this._configuration.getValue(null, { resource });
 
 		const result: WorkspaceConfiguration = {
 			has(key: string): boolean {
@@ -72,7 +73,7 @@ export class ExtHostConfiguration extends ExtHostConfigurationShape {
 					return this._proxy.$removeConfigurationOption(target, key);
 				}
 			},
-			inspect: <T>(key: string): { key: string; defaultValue?: T; globalValue?: T; workspaceValue?: T } => {
+			inspect: <T>(key: string): { key: string; defaultValue?: T; globalValue?: T; workspaceValue?: T, folderValue?: T } => {
 				key = section ? `${section}.${key}` : key;
 				const config = this._configuration.values()[key];
 				if (config) {
@@ -80,7 +81,8 @@ export class ExtHostConfiguration extends ExtHostConfigurationShape {
 						key,
 						defaultValue: config.default,
 						globalValue: config.user,
-						workspaceValue: config.workspace
+						workspaceValue: config.workspace,
+						folderValue: config.folder
 					};
 				}
 				return undefined;