[PostRector] Allow remove unused use sub namespace on UnusedImportRem…

…ovingPostRector (#5299)

* [PostRector] Allow remove unused use sub namespace on UnusedImportRemovingPostRector

* more fixture

* more fixtures

* more fixture

* implemented 🎉

* fix phpstan

* fix phpstan

packages/PostRector/Rector/UnusedImportRemovingPostRector.php

@@ -78,7 +78,7 @@ private function findNonUseImportNames(Namespace_|FileWithoutNamespace $namespac
     {
         $names = [];
 
-        $this->simpleCallableNodeTraverser->traverseNodesWithCallable($namespace, static function (Node $node) use (
+        $this->simpleCallableNodeTraverser->traverseNodesWithCallable($namespace->stmts, static function (Node $node) use (
             &$names
         ): int|null|Name {
             if ($node instanceof Use_) {
@@ -176,7 +176,7 @@ private function isUseImportUsed(UseUse $useUse, array $names): bool
                 return true;
             }
 
-            if (str_starts_with($name, $namespacedPrefix)) {
+            if ($this->isSubNamespace($name, $namespacedPrefix)) {
                 return true;
             }
 
@@ -200,4 +200,14 @@ private function isUseImportUsed(UseUse $useUse, array $names): bool
 
         return false;
     }
+
+    private function isSubNamespace(string $name, string $namespacedPrefix): bool
+    {
+        if (str_starts_with($name, $namespacedPrefix)) {
+            $subNamespace = substr($name, strlen($namespacedPrefix));
+            return ! str_contains($subNamespace, '\\');
+        }
+
+        return false;
+    }
 }

tests/Issues/NamespacedUse/Fixture/skip_subnamespace_from_namespace_in_use.php.inc

@@ -0,0 +1,12 @@
+<?php
+
+namespace App\Bar;
+
+use App\Bar\Baz;
+
+final class SkipSubNamepaceFromNamespaceInUse
+{
+    public function run(Baz $baz)
+    {
+    }
+}

tests/Issues/NamespacedUse/Fixture/skip_subnamespace_used.php.inc

@@ -0,0 +1,12 @@
+<?php
+
+namespace App\Bar;
+
+use App;
+
+final class SkipSubNamespaceUsed
+{
+    public function run(App\Baz $baz)
+    {
+    }
+}

tests/Issues/NamespacedUse/Fixture/sub_namespace.php.inc

@@ -0,0 +1,21 @@
+<?php
+
+namespace App\Bar;
+
+use App;
+
+final class SubNamespace
+{
+}
+
+?>
+-----
+<?php
+
+namespace App\Bar;
+
+final class SubNamespace
+{
+}
+
+?>

tests/Issues/NamespacedUse/Fixture/subnamespace_from_namespace.php.inc

@@ -0,0 +1,27 @@
+<?php
+
+namespace App\Bar;
+
+use App;
+
+final class SubNamepaceFromNamespace
+{
+    public function run(Baz $baz)
+    {
+    }
+}
+
+?>
+-----
+<?php
+
+namespace App\Bar;
+
+final class SubNamepaceFromNamespace
+{
+    public function run(Baz $baz)
+    {
+    }
+}
+
+?>

tests/Issues/NamespacedUse/Fixture/subnamespace_from_namespace2.php.inc

@@ -0,0 +1,27 @@
+<?php
+
+namespace App\Bar;
+
+use App;
+
+final class SubNamepaceFromNamespace2
+{
+    public function run(Bar\Baz $baz)
+    {
+    }
+}
+
+?>
+-----
+<?php
+
+namespace App\Bar;
+
+final class SubNamepaceFromNamespace2
+{
+    public function run(Bar\Baz $baz)
+    {
+    }
+}
+
+?>