[gen] Build after rm -rf'ing ./generated

I want to nuke the generated files to be certain that no state is
carried over

Author: shish

generator/src/Commands/GenerateCommand.php

@@ -137,11 +137,13 @@ private function checkout(string $dir, string $commit): void
 
     private function rmGenerated(): void
     {
-        $finder = new Finder();
-        $finder->in(FileCreator::getSafeRootDir() . "/generated");
-        foreach ($finder as $file) {
-            if ($file->isFile()) {
-                \unlink($file->getPathname());
+        if (\file_exists(FileCreator::getSafeRootDir() . "/generated")) {
+            $finder = new Finder();
+            $finder->in(FileCreator::getSafeRootDir() . "/generated");
+            foreach ($finder as $file) {
+                if ($file->isFile()) {
+                    \unlink($file->getPathname());
+                }
             }
         }
     }

generator/src/Generator/FileCreator.php

@@ -35,7 +35,7 @@ public function generatePhpFile(
         foreach ($phpFunctionsByModule as $module => $phpFunctions) {
             $lcModule = \lcfirst($module);
             if (!is_dir($path)) {
-                \mkdir($path);
+                \mkdir($path, recursive: true);
             }
             $stream = \fopen($path.$lcModule.'.php', 'w');
             if ($stream === false) {
@@ -188,6 +188,9 @@ public function createExceptionFile(string $moduleName): void
     {
         $exceptionName = self::toExceptionName($moduleName);
         if (!file_exists(FileCreator::getSafeRootDir() . '/lib/Exceptions/'.$exceptionName.'.php')) {
+            if (!is_dir(FileCreator::getSafeRootDir() . '/generated/Exceptions')) {
+                \mkdir(FileCreator::getSafeRootDir() . '/generated/Exceptions', recursive: true);
+            }
             \file_put_contents(
                 FileCreator::getSafeRootDir() . '/generated/Exceptions/'.$exceptionName.'.php',
                 <<<EOF