Add attachDotnetDebugger debug option

Author: JustinGrote

package.json

@@ -500,6 +500,11 @@
                 "type": "boolean",
                 "description": "Determines whether a temporary PowerShell Integrated Console is created for each debugging session, useful for debugging PowerShell classes and binary modules.  Overrides the user setting 'powershell.debugging.createTemporaryIntegratedConsole'.",
                 "default": false
+              },
+              "attachDotnetDebugger": {
+                "type": "boolean",
+                "description": "If specified, a C# debug session will be started and attach to the new temporary PSIC. This does nothing unless createTemporaryIntegratedConsole is also specified.",
+                "default": false
               }
             }
           },

src/features/DebugSession.ts

@@ -333,6 +333,19 @@ export class DebugSessionFeature extends LanguageClientConsumer
             this.tempSessionDetails = await this.tempDebugProcess.start(`DebugSession-${this.sessionCount++}`);
             utils.writeSessionFile(sessionFilePath, this.tempSessionDetails);
 
+            if (config.attachDotnetDebugger) {
+                // Will wait until the process is started and available before attaching
+                const pid = await this.tempDebugProcess.getPid();
+
+                await vscode.debug.startDebugging(undefined, {
+                    name: "Dotnet Debugger: PSIC Temporary Console",
+                    type: "coreclr",
+                    request: "attach",
+                    processId: pid
+                });
+                this.logger.write(`Attached dotnet debugger to process ${pid}`)
+            }
+
         } else {
             utils.writeSessionFile(sessionFilePath, this.sessionManager.getSessionDetails());
         }

src/process.ts

@@ -136,11 +136,17 @@ export class PowerShellProcess {
 
         // Log that the PowerShell terminal process has been started
         this.log.write("Registering terminal PID log callback");
-        this.consoleTerminal.processId.then((pid) => this.logTerminalPid(pid, pwshName));
-
+        this.consoleTerminal.processId.then((pid) =>
+            this.logTerminalPid(pid, pwshName)
+        );
         return sessionDetails;
     }
 
+    // Returns the process Id of the consoleTerminal
+    public async getPid() {
+        return await this.consoleTerminal.processId
+    }
+
     public showConsole(preserveFocus: boolean) {
         if (this.consoleTerminal) {
             this.consoleTerminal.show(preserveFocus);