Track virtual documents.

src/features/diagnosticsProvider.ts

@@ -140,7 +140,7 @@ class DiagnosticsProvider extends AbstractSupport {
         // Go ahead and check for diagnostics in the currently visible editors.
         for (let editor of vscode.window.visibleTextEditors) {
             let document = editor.document;
-            if (document.languageId === 'csharp' && document.uri.scheme === 'file') {
+            if (document.languageId === 'csharp') {
                 this._validateDocument(document);
             }
         }
@@ -172,7 +172,7 @@ class DiagnosticsProvider extends AbstractSupport {
     }
 
     private _onDocumentAddOrChange(document: vscode.TextDocument): void {
-        if (document.languageId === 'csharp' && document.uri.scheme === 'file') {
+        if (document.languageId === 'csharp') {
             this._validateDocument(document);
             this._validateProject();
         }

src/features/virtualDocumentTracker.ts

@@ -0,0 +1,97 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the MIT License. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+import {workspace, TextDocument, Uri} from 'vscode';
+import {OmniSharpServer} from '../omnisharp/server';
+import * as serverUtils from '../omnisharp/utils';
+import { FileChangeType } from '../omnisharp/protocol';
+import { IDisposable } from '../Disposable';
+import CompositeDisposable from '../CompositeDisposable';
+import { EventStream } from '../EventStream';
+import { DocumentSynchronizationFailure } from '../omnisharp/loggingEvents';
+
+function trackCurrentVirtualDocuments(server: OmniSharpServer, eventStream: EventStream) {
+    let registration = server.onProjectAdded(async () => {
+        registration.dispose();
+
+        for (let i = 0; i < workspace.textDocuments.length; i++) {
+            let document = workspace.textDocuments[i];
+
+            if (!shouldIgnoreDocument(document, server)) {
+                await openVirtualDocument(document, server, eventStream);
+            }
+        }
+    });
+}
+
+function trackFutureVirtualDocuments(server: OmniSharpServer, eventStream: EventStream): IDisposable {
+    let onTextDocumentOpen = workspace.onDidOpenTextDocument(async document => {
+        if (shouldIgnoreDocument(document, server)) {
+            return;
+        }
+
+        await openVirtualDocument(document, server, eventStream);
+    });
+
+    let onTextDocumentClose = workspace.onDidCloseTextDocument(async document => {
+        if (shouldIgnoreDocument(document, server)) {
+            return;
+        }
+
+        await closeVirtualDocument(document, server, eventStream);
+    });
+
+    // We already track text document changes for virtual documents in our change forwarder.
+    return new CompositeDisposable(
+        onTextDocumentOpen,
+        onTextDocumentClose);
+}
+
+function shouldIgnoreDocument(document: TextDocument, server: OmniSharpServer): boolean {
+    if (document.uri.scheme === 'file' || document.languageId !== 'csharp') {
+        // We're only interested in non-physical CSharp documents.
+        return true;
+    }
+
+    if (!server.isRunning()) {
+        return true;
+    }
+
+    return false;
+}
+
+async function openVirtualDocument(document: TextDocument, server: OmniSharpServer, eventStream: EventStream) {
+    let req = { FileName: document.uri.path, changeType: FileChangeType.Create };
+    try {
+        await serverUtils.filesChanged(server, [req]);
+        await serverUtils.updateBuffer(server, { Buffer: document.getText(), FileName: document.fileName });
+    }
+    catch (error) {
+        logSynchronizationFailure(document.uri, error, server, eventStream);
+    }
+}
+
+async function closeVirtualDocument(document: TextDocument, server: OmniSharpServer, eventStream: EventStream) {
+    let req = { FileName: document.uri.path, changeType: FileChangeType.Delete };
+    try {
+        await serverUtils.filesChanged(server, [req]);
+    }
+    catch (error) {
+        logSynchronizationFailure(document.uri, error, server, eventStream);
+    }
+}
+
+function logSynchronizationFailure(uri: Uri, error: any, server: OmniSharpServer, eventStream: EventStream) {
+    if (server.isRunning()) {
+        eventStream.post(new DocumentSynchronizationFailure(uri.path, error));
+    }
+}
+
+export default function trackVirtualDocuments(server: OmniSharpServer, eventStream: EventStream): IDisposable {
+    trackCurrentVirtualDocuments(server, eventStream);
+    let disposable = trackFutureVirtualDocuments(server, eventStream);
+
+    return disposable;
+}

src/observers/CsharpLoggerObserver.ts

@@ -52,6 +52,9 @@ export class CsharpLoggerObserver extends BaseLoggerObserver {
             case Event.DownloadSizeObtained.name:
                 this.handleDownloadSizeObtained(<Event.DownloadSizeObtained>event);
                 break;
+            case Event.DocumentSynchronizationFailure.name:
+                this.handleDocumentSynchronizationFailure(<Event.DocumentSynchronizationFailure>event);
+                break;
             case Event.LatestBuildDownloadStart.name:
                 this.logger.appendLine("Getting latest OmniSharp version information");
                 break;
@@ -112,4 +115,8 @@ export class CsharpLoggerObserver extends BaseLoggerObserver {
         this.logger.appendLine(`Installing package '${event.packageDescription}'`);
         this.logger.appendLine();
     }
+
+    private handleDocumentSynchronizationFailure(event: Event.DocumentSynchronizationFailure) {
+        this.logger.appendLine(`Failed to synchronize document '${event.documentPath}': ${event.errorMessage}`);
+    }
 }

src/omnisharp/extension.ts

@@ -34,14 +34,14 @@ import { NetworkSettingsProvider } from '../NetworkSettings';
 import CompositeDisposable from '../CompositeDisposable';
 import Disposable from '../Disposable';
 import OptionProvider from '../observers/OptionProvider';
+import trackVirtualDocuments from '../features/virtualDocumentTracker';
 import { StructureProvider } from '../features/structureProvider';
 
 export let omnisharp: OmniSharpServer;
 
 export async function activate(context: vscode.ExtensionContext, packageJSON: any, platformInfo: PlatformInformation, provider: NetworkSettingsProvider, eventStream: EventStream, optionProvider: OptionProvider, extensionPath: string) {
     const documentSelector: vscode.DocumentSelector = {
         language: 'csharp',
-        scheme: 'file' // only files from disk
     };
 
     const options = optionProvider.GetLatestOptions();
@@ -81,6 +81,7 @@ export async function activate(context: vscode.ExtensionContext, packageJSON: an
         localDisposables.add(vscode.languages.registerCodeActionsProvider(documentSelector, codeActionProvider));
         localDisposables.add(reportDiagnostics(server, advisor));
         localDisposables.add(forwardChanges(server));
+        localDisposables.add(trackVirtualDocuments(server, eventStream));
         localDisposables.add(vscode.languages.registerFoldingRangeProvider(documentSelector, new StructureProvider(server)));
     }));
 

src/omnisharp/loggingEvents.ts

@@ -147,6 +147,10 @@ export class DotNetTestsInClassDebugStart implements BaseEvent {
     constructor(public className: string) { }
 }
 
+export class DocumentSynchronizationFailure implements BaseEvent {
+    constructor(public documentPath: string, public errorMessage: string) { }
+}
+
 export class DebuggerPrerequisiteFailure extends EventWithMessage { }
 export class DebuggerPrerequisiteWarning extends EventWithMessage { }
 export class CommandDotNetRestoreProgress extends EventWithMessage { }

test/integrationTests/virtualDocumentTracker.integration.test.ts

@@ -0,0 +1,61 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the MIT License. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+import * as vscode from 'vscode';
+
+import { should, expect } from 'chai';
+import { activateCSharpExtension } from './integrationHelpers';
+import testAssetWorkspace from './testAssets/testAssetWorkspace';
+import { IDisposable } from '../../src/Disposable';
+
+const chai = require('chai');
+chai.use(require('chai-arrays'));
+chai.use(require('chai-fs'));
+
+suite(`Virtual Document Tracking ${testAssetWorkspace.description}`, function () {
+    let virtualScheme: string = "virtual";
+    let virtualDocumentRegistration: IDisposable;
+
+    suiteSetup(async function () {
+        should();
+        await testAssetWorkspace.restore();
+        await activateCSharpExtension();
+
+        let virtualCSharpDocumentProvider = new VirtualCSharpDocumentProvider();
+        virtualDocumentRegistration = vscode.workspace.registerTextDocumentContentProvider(virtualScheme, virtualCSharpDocumentProvider);
+    });
+
+    suiteTeardown(async () => {
+        await testAssetWorkspace.cleanupWorkspace();
+        virtualDocumentRegistration.dispose();
+    });
+
+    test("Virtual documents are operated on.", async () => {
+        let virtualUri = vscode.Uri.parse(`${virtualScheme}://${testAssetWorkspace.projects[0].projectDirectoryPath}/_virtualFile.cs`);
+        await vscode.workspace.openTextDocument(virtualUri);
+
+        let position = new vscode.Position(2, 4);
+        let completionItems = <vscode.CompletionList>await vscode.commands.executeCommand("vscode.executeCompletionItemProvider", virtualUri, position);
+
+        expect(completionItems.items).to.satisfy(() => {
+            let item = completionItems.items.find(item => {
+                return item.label === "while";
+            });
+
+            return item;
+        });
+    });
+});
+
+class VirtualCSharpDocumentProvider implements vscode.TextDocumentContentProvider {
+    onDidChange?: vscode.Event<vscode.Uri>;
+
+    provideTextDocumentContent(uri: vscode.Uri, token: vscode.CancellationToken): vscode.ProviderResult<string> {
+        return `namespace Test
+{
+
+}`;
+    }
+}