Add launch.json automagically

src/assets.ts

@@ -0,0 +1,282 @@
+/*---------------------------------------------------------------------------------------------
+ *  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 * as fs from 'fs-extra-promise';
+import * as path from 'path';
+import * as vscode from 'vscode';
+import * as tasks from 'vscode-tasks';
+import {OmnisharpServer} from './omnisharpServer';
+import * as serverUtils from './omnisharpUtils';
+import * as protocol from './protocol.ts'
+
+interface DebugConfiguration {
+    name: string,
+    type: string,
+    request: string,
+}
+
+interface ConsoleLaunchConfiguration extends DebugConfiguration {
+    preLaunchTask: string,
+    program: string,
+    args: string[],
+    cwd: string,
+    stopAtEntry: boolean
+}
+
+interface CommandLine {
+    command: string,
+    args?: string
+}
+
+interface LaunchBrowserConfiguration {
+    enabled: boolean,
+    args: string,
+    windows?: CommandLine,
+    osx: CommandLine,
+    linux: CommandLine
+}
+
+interface WebLaunchConfiguration extends ConsoleLaunchConfiguration {
+    launchBrowser: LaunchBrowserConfiguration
+}
+
+interface AttachConfiguration extends DebugConfiguration {
+    processName: string
+}
+
+interface Paths {
+    vscodeFolder: string;
+    tasksJsonPath: string;
+    launchJsonPath: string;
+}
+
+function getPaths(): Paths {
+    const vscodeFolder = path.join(vscode.workspace.rootPath, '.vscode');
+
+    return {
+        vscodeFolder: vscodeFolder,
+        tasksJsonPath: path.join(vscodeFolder, 'tasks.json'),
+        launchJsonPath: path.join(vscodeFolder, 'launch.json')
+    }
+}
+
+interface Operations {
+    addTasksJson?: boolean,
+    updateTasksJson?: boolean,
+    addLaunchJson?: boolean
+}
+
+function hasOperations(operations: Operations) {
+    return operations.addLaunchJson ||
+           operations.updateTasksJson ||
+           operations.addLaunchJson;
+}
+
+function getOperations() {
+    const paths = getPaths();
+
+    return getBuildOperations(paths.tasksJsonPath).then(operations => 
+           getLaunchOperations(paths.launchJsonPath, operations));
+}
+
+function getBuildOperations(tasksJsonPath: string) {
+    return new Promise<Operations>((resolve, reject) => {
+        return fs.existsAsync(tasksJsonPath).then(exists => {
+            if (exists) {
+                fs.readFileAsync(tasksJsonPath).then(buffer => {
+                    const text = buffer.toString();
+                    const tasksJson: tasks.TaskConfiguration = JSON.parse(text);
+                    const buildTask = tasksJson.tasks.find(td => td.taskName === 'build');
+
+                    resolve({ updateTasksJson: (buildTask === undefined) });
+                });
+            }
+            else {
+                resolve({ addTasksJson: true });
+            }
+        });
+    });
+}
+
+function getLaunchOperations(launchJsonPath: string, operations: Operations) {
+    return new Promise<Operations>((resolve, reject) => {
+        return fs.existsAsync(launchJsonPath).then(exists => {
+            if (exists) {
+                resolve(operations);
+            }
+            else {
+                operations.addLaunchJson = true;
+                resolve(operations);
+            }
+        });
+    });
+}
+
+function promptToAddAssets() {
+    return new Promise<boolean>((resolve, reject) => {
+        const item = { title: 'Yes' }
+
+        vscode.window.showInformationMessage('Required assets to build and debug are missing from your project. Add them?', item).then(selection => {
+            return selection
+                ? resolve(true)
+                : resolve(false);
+        });
+    });
+}
+
+function createLaunchConfiguration(targetFramework: string, executableName: string): ConsoleLaunchConfiguration {
+    return {
+        name: '.NET Core Launch (console)',
+        type: 'coreclr',
+        request: 'launch',
+        preLaunchTask: 'build',
+        program: '${workspaceRoot}/bin/Debug/' + targetFramework + '/'+ executableName,
+        args: [],
+        cwd: '${workspaceRoot}',
+        stopAtEntry: false
+    }
+}
+
+function createWebLaunchConfiguration(targetFramework: string, executableName: string): WebLaunchConfiguration {
+    return {
+        name: '.NET Core Launch (web)',
+        type: 'coreclr',
+        request: 'launch',
+        preLaunchTask: 'build',
+        program: '${workspaceRoot}/bin/Debug/' + targetFramework + '/'+ executableName,
+        args: [],
+        cwd: '${workspaceRoot}',
+        stopAtEntry: false,
+        launchBrowser: {
+            enabled: true,
+            args: '${auto-detect-url}',
+            windows: {
+                command: 'cmd.exe',
+                args: '/C start ${auto-detect-url}'
+            },
+            osx: {
+                command: 'open'
+            },
+            linux: {
+                command: 'xdg-open'
+            }
+        }
+    }
+}
+
+function createAttachConfiguration(): AttachConfiguration {
+    return {
+        name: '.NET Core Attach',
+        type: 'coreclr',
+        request: 'attach',
+        processName: '<example>'
+    }
+}
+
+function createLaunchJson(targetFramework: string, executableName: string): any {
+    return {
+        version: '0.2.0',
+        configurations: [
+            createLaunchConfiguration(targetFramework, executableName),
+            createWebLaunchConfiguration(targetFramework, executableName),
+            createAttachConfiguration()
+        ]
+    }
+}
+
+function createBuildTaskDescription(): tasks.TaskDescription {
+    return {
+        taskName: 'build',
+        args: [],
+        isBuildCommand: true,
+        problemMatcher: '$msCompile'
+    };
+}
+
+function createTasksConfiguration(): tasks.TaskConfiguration {
+    return {
+        version: '0.1.0',
+        command: 'dotnet',
+        isShellCommand: true,
+        args: [],
+        tasks: [ createBuildTaskDescription() ]
+    };
+}
+
+function addTasksJsonIfNecessary(info: protocol.DotNetWorkspaceInformation, paths: Paths, operations: Operations) {
+    return new Promise<void>((resolve, reject) => {
+        if (!operations.addTasksJson) {
+            return resolve();
+        }
+
+        const tasksJson = createTasksConfiguration();
+        const tasksJsonText = JSON.stringify(tasksJson, null, '    ');
+
+        return fs.writeFileAsync(paths.tasksJsonPath, tasksJsonText);
+    });
+}
+
+function addLaunchJsonIfNecessary(info: protocol.DotNetWorkspaceInformation, paths: Paths, operations: Operations) {
+    return new Promise<void>((resolve, reject) => {
+        if (!operations.addLaunchJson) {
+            return resolve();
+        }
+
+        let targetFramework = '<target-framework>';
+        let executableName = '<project-name.dll>';
+
+        let projectWithEntryPoint = info.Projects.find(project => project.EmitEntryPoint === true);
+
+        if (projectWithEntryPoint) {
+            targetFramework = projectWithEntryPoint.TargetFramework.ShortName;
+            executableName = path.basename(projectWithEntryPoint.CompilationOutputAssemblyFile);
+        }
+
+        const launchJson = createLaunchJson(targetFramework, executableName);
+        const launchJsonText = JSON.stringify(launchJson, null, '    ');
+
+        return fs.writeFileAsync(paths.launchJsonPath, launchJsonText);
+    });
+}
+
+export function addAssetsIfNecessary(server: OmnisharpServer) {
+    if (!vscode.workspace.rootPath) {
+        return;
+    }
+
+    // If there is no project.json, we won't bother to prompt the user for tasks.json.		
+    const projectJsonPath = path.join(vscode.workspace.rootPath, 'project.json');		
+    if (!fs.existsSync(projectJsonPath)) {
+        return;
+    }
+
+    return serverUtils.requestWorkspaceInformation(server).then(info => {
+        // If there are no .NET Core projects, we won't bother offering to add assets.
+        if ('DotNet' in info && info.DotNet.Projects.length > 0) {        
+            return getOperations().then(operations => {
+                if (!hasOperations(operations)) {
+                    return;
+                }
+
+                promptToAddAssets().then(addAssets => {
+                    if (!addAssets) {
+                        return;
+                    }
+
+                    const paths = getPaths();
+
+                    return fs.ensureDirAsync(paths.vscodeFolder).then(() => {
+                        return Promise.all([
+                            addTasksJsonIfNecessary(info.DotNet, paths, operations),
+                            addLaunchJsonIfNecessary(info.DotNet, paths, operations)
+                        ]);
+                    });
+                });
+            });
+        }
+    });
+}

src/omnisharpMain.ts

@@ -23,7 +23,7 @@ import {StdioOmnisharpServer} from './omnisharpServer';
 import forwardChanges from './features/changeForwarding';
 import reportStatus from './features/omnisharpStatus';
 import {installCoreClrDebug} from './coreclr-debug';
-import {promptToAddBuildTaskIfNecessary} from './tasks';
+import {addAssetsIfNecessary} from './assets';
 import * as vscode from 'vscode';
 import TelemetryReporter from 'vscode-extension-telemetry';
 
@@ -74,6 +74,11 @@ export function activate(context: vscode.ExtensionContext): any {
 
 	disposables.push(registerCommands(server, context.extensionPath));
 	disposables.push(reportStatus(server));
+
+    disposables.push(server.onServerStart(() => {
+        // Update or add tasks.json and launch.json
+        addAssetsIfNecessary(server);
+    }));
 
 	// read and store last solution or folder path
 	disposables.push(server.onBeforeServerStart(path => context.workspaceState.update('lastSolutionPathOrFolder', path)));
@@ -86,9 +91,6 @@ export function activate(context: vscode.ExtensionContext): any {
 		server.stop();
 	}));
 
-    // Check to see if there is a tasks.json with a "build" task and prompt the user to add it if missing.
-    promptToAddBuildTaskIfNecessary();
-
     // install coreclr-debug
     installCoreClrDebug(context, reporter);
 

src/omnisharpServer.ts

@@ -268,8 +268,8 @@ export abstract class OmnisharpServer {
 			this._serverProcess = value.process;
             this._requestDelays = {};
             this._fireEvent(Events.StdOut, `[INFO] Started OmniSharp from '${value.command}' with process id ${value.process.pid}...\n`);
-            this._fireEvent(Events.ServerStart, solutionPath);
 			this._setState(ServerState.Started);
+            this._fireEvent(Events.ServerStart, solutionPath);
 			return this._doConnect();
 		}).then(_ => {
 			this._processQueue();

src/protocol.ts

@@ -268,12 +268,20 @@ export interface DotNetWorkspaceInformation {
 export interface DotNetProject {
 	Path: string;
     Name: string;
+    TargetFramework: DotNetFramework;
     CompilationOutputPath: string;
     CompilationOutputAssemblyFile: string;
     CompilationOutputPdbFile: string;
+    EmitEntryPoint?: boolean;
 	SourceFiles: string[];
 }
 
+export interface DotNetFramework {
+	Name: string;
+	FriendlyName: string;
+	ShortName: string;
+}
+
 export interface RenameRequest extends Request {
 	RenameTo: string;
 	WantsTextChanges?: boolean;