add launch.json configs

Author: elahehrashedi

Extension/src/Debugger/configurationProvider.ts

@@ -526,6 +526,15 @@ export class DebugConfigurationProvider implements vscode.DebugConfigurationProv
         }
     }
 
+    public async getLaunchConfigs(folder: vscode.WorkspaceFolder | undefined): Promise<vscode.WorkspaceConfiguration[] | undefined> {
+        let configs: vscode.WorkspaceConfiguration[] | undefined = vscode.workspace.getConfiguration('launch', folder).get('configurations');
+        if (!configs) {
+            return undefined;
+        }
+        configs = configs.filter(config => (config.name && config.type === DebuggerType.cppvsdbg || config.type === DebuggerType.cppdbg) && config.request === "launch");
+        return configs;
+    }
+
     public async buildAndRun(textEditor: vscode.TextEditor): Promise<void> {
         // Turn off the debug mode.
         return this.buildAndDebug(textEditor, false);
@@ -544,6 +553,36 @@ export class DebugConfigurationProvider implements vscode.DebugConfigurationProv
         if (os.platform() === 'win32') {
             configs = configs.concat(await this.provideDebugConfigurationsForType(DebuggerType.cppvsdbg, folder));
         }
+        
+        if (folder) {
+            // Get existing debug configurations from launch.json.
+            let existingConfigs: vscode.DebugConfiguration[] | undefined = (await this.getLaunchConfigs(folder))?.map(config =>
+                ({name: config.name,
+                    type: config.type,
+                    request: config.request,
+                    detail: config.detail ? config.detail : localize("pre.Launch.Task", "preLaunchTask: {0}", config.preLaunchTask),
+                    preLaunchTask: config.preLaunchTask,
+                    existing: TaskConfigStatus.configured
+                }));
+            
+            // Remove the detected configs that are already configured once in launch.json.
+            const dedupExistingConfigs: vscode.DebugConfiguration[] = configs.filter(detectedConfig => {
+                let isAlreadyConfigured: boolean = false;
+                if (existingConfigs && existingConfigs.length !== 0) {
+                    for (const config of existingConfigs) {
+                        if (config.name === detectedConfig.name &&
+                            (config.preLaunchTask as string) === (detectedConfig.preLaunchTask as string) &&
+                            config.type === detectedConfig.type &&
+                            config.request === detectedConfig.request) {
+                            isAlreadyConfigured = true;
+                            break;
+                        }
+                    }
+                }
+                return !isAlreadyConfigured;
+            });
+            configs = existingConfigs ? existingConfigs.concat(dedupExistingConfigs) : dedupExistingConfigs;
+        }
 
         const defaultConfig: vscode.DebugConfiguration[] = configs.filter((config: vscode.DebugConfiguration) => (config.hasOwnProperty("isDefault") && config.isDefault));
         interface MenuItem extends vscode.QuickPickItem {