feature #27065 [DI][Routing] Allow invokable objects to be used as PHP-DSL loaders (aurimasniekis)

This PR was squashed before being merged into the 4.1-dev branch (closes #27065).

Discussion
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[DI][Routing] Allow invokable objects to be used as PHP-DSL loaders

| Q             | A
| ------------- | ---
| Branch?       | master
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #26583, #25630
| License       | MIT
| Doc PR        | none

Changed DI/Router PHPFileLoader to check is_object && is_callable instead of instance of Closure

Commits
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662ff7e10b [DI][Routing] Allow invokable objects to be used as PHP-DSL loaders

Author: fabpot

Loader/PhpFileLoader.php

@@ -43,7 +43,7 @@ public function load($resource, $type = null)
 
         $callback = $load($path);
 
-        if ($callback instanceof \Closure) {
+        if (\is_object($callback) && \is_callable($callback)) {
             $callback(new ContainerConfigurator($this->container, $this, $this->instanceof, $path, $resource), $this->container, $this);
         }
     }

Tests/Fixtures/config/object.expected.yml

@@ -0,0 +1,10 @@
+
+services:
+    service_container:
+        class: Symfony\Component\DependencyInjection\ContainerInterface
+        public: true
+        synthetic: true
+    App\BarService:
+        class: App\BarService
+        public: true
+        arguments: [!service { class: FooClass }]

Tests/Fixtures/config/object.php

@@ -0,0 +1,14 @@
+<?php
+
+namespace Symfony\Component\DependencyInjection\Loader\Configurator;
+
+use App\BarService;
+
+return new class() {
+    public function __invoke(ContainerConfigurator $c)
+    {
+        $s = $c->services();
+        $s->set(BarService::class)
+            ->args(array(inline('FooClass')));
+    }
+};

Tests/Loader/PhpFileLoaderTest.php

@@ -68,6 +68,7 @@ public function testConfig($file)
     public function provideConfig()
     {
         yield array('basic');
+        yield array('object');
         yield array('defaults');
         yield array('instanceof');
         yield array('prototype');