[DX] Skip vendor warning in case of downgrade (#5526)

* [DX] Skip vendor warning in case of downgrade

* [ci-review] Rector Rectify

---------

Co-authored-by: GitHub Action <actions@github.com>

src/Application/ApplicationFileProcessor.php

@@ -8,9 +8,9 @@
 use Rector\Caching\Detector\ChangedFilesDetector;
 use Rector\Configuration\Option;
 use Rector\Configuration\Parameter\SimpleParameterProvider;
+use Rector\Configuration\VendorMissAnalyseGuard;
 use Rector\Parallel\Application\ParallelFileProcessor;
 use Rector\Provider\CurrentFileProvider;
-use Rector\Skipper\FileSystem\PathNormalizer;
 use Rector\Testing\PHPUnit\StaticPHPUnitEnvironment;
 use Rector\Util\ArrayParametersMerger;
 use Rector\ValueObject\Application\File;
@@ -48,15 +48,16 @@ public function __construct(
         private readonly ChangedFilesDetector $changedFilesDetector,
         private readonly CurrentFileProvider $currentFileProvider,
         private readonly FileProcessor $fileProcessor,
-        private readonly ArrayParametersMerger $arrayParametersMerger
+        private readonly ArrayParametersMerger $arrayParametersMerger,
+        private readonly VendorMissAnalyseGuard $vendorMissAnalyseGuard,
     ) {
     }
 
     public function run(Configuration $configuration, InputInterface $input): ProcessResult
     {
         $filePaths = $this->fileFactory->findFilesInPaths($configuration->getPaths(), $configuration);
 
-        if ($this->containsVendorPath($filePaths)) {
+        if ($this->vendorMissAnalyseGuard->isVendorAnalyzed($filePaths)) {
             $this->symfonyStyle->warning(sprintf(
                 'Rector is running on your "/vendor" directory. This is not necessary, as Rector access /vendor by composer autoload. It will cause Rector tu run much slower and possibly with errors.%sRemove "/vendor" from Rector paths and run again.',
                 PHP_EOL . PHP_EOL
@@ -265,18 +266,4 @@ private function resolveCalledRectorBinary(): ?string
 
         return $potentialRectorBinaryPath;
     }
-
-    /**
-     * @param string[] $filePaths
-     */
-    private function containsVendorPath(array $filePaths): bool
-    {
-        foreach ($filePaths as $filePath) {
-            if (str_contains(PathNormalizer::normalize($filePath), '/vendor/')) {
-                return true;
-            }
-        }
-
-        return false;
-    }
 }

src/Configuration/VendorMissAnalyseGuard.php

@@ -0,0 +1,50 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Rector\Configuration;
+
+use Rector\Configuration\Parameter\SimpleParameterProvider;
+use Rector\Skipper\FileSystem\PathNormalizer;
+
+final class VendorMissAnalyseGuard
+{
+    /**
+     * @param string[] $filePaths
+     */
+    public function isVendorAnalyzed(array $filePaths): bool
+    {
+        if ($this->hasDowngradeSets()) {
+            return false;
+        }
+
+        return $this->containsVendorPath($filePaths);
+    }
+
+    private function hasDowngradeSets(): bool
+    {
+        $registeredRectorSets = SimpleParameterProvider::provideArrayParameter(Option::REGISTERED_RECTOR_SETS);
+
+        foreach ($registeredRectorSets as $registeredRectorSet) {
+            if (str_contains((string) $registeredRectorSet, 'downgrade-')) {
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+    /**
+     * @param string[] $filePaths
+     */
+    private function containsVendorPath(array $filePaths): bool
+    {
+        foreach ($filePaths as $filePath) {
+            if (str_contains(PathNormalizer::normalize($filePath), '/vendor/')) {
+                return true;
+            }
+        }
+
+        return false;
+    }
+}