Deprecated passing Parameter instances as class name to Definition.

derrabus · derrabus · commit a800e1299151 · 2019-07-05T12:01:00.000+02:00
diff --git a/UPGRADE-4.4.md b/UPGRADE-4.4.md
@@ -41,6 +41,18 @@ DependencyInjection
        arguments: [!tagged_iterator app.handler]
    ```
 
+ * Passing an instance of `Symfony\Component\DependencyInjection\Parameter` as class name to `Symfony\Component\DependencyInjection\Definition` is now deprecated.
+
+   Before:
+   ```php
+   new Definition(new Parameter('my_class'));
+   ```
+
+   After:
+   ```php
+   new Definition('%my_class%');
+   ```
+
 Filesystem
 ----------
 
diff --git a/src/Symfony/Component/DependencyInjection/CHANGELOG.md b/src/Symfony/Component/DependencyInjection/CHANGELOG.md
@@ -6,6 +6,7 @@ CHANGELOG
 
  * deprecated support for short factories and short configurators in Yaml
  * deprecated `tagged` in favor of `tagged_iterator`
+ * deprecated passing an instance of `Symfony\Component\DependencyInjection\Parameter` as class name to `Symfony\Component\DependencyInjection\Definition`
 
 4.3.0
 -----
diff --git a/src/Symfony/Component/DependencyInjection/Definition.php b/src/Symfony/Component/DependencyInjection/Definition.php
@@ -171,6 +171,10 @@ public function getDecoratedService()
      */
     public function setClass($class)
     {
+        if ($class instanceof Parameter) {
+            @trigger_error(sprintf('Passing an instance of %s as class name to %s in deprecated in Symfony 4.4 and will result in a TypeError in 5.0. Please pass the string "%%%s%%" instead.', Parameter::class, __CLASS__, (string) $class), E_USER_DEPRECATED);
+        }
+
         $this->changes['class'] = true;
 
         $this->class = $class;
diff --git a/src/Symfony/Component/DependencyInjection/Tests/DefinitionTest.php b/src/Symfony/Component/DependencyInjection/Tests/DefinitionTest.php
@@ -13,6 +13,7 @@
 
 use PHPUnit\Framework\TestCase;
 use Symfony\Component\DependencyInjection\Definition;
+use Symfony\Component\DependencyInjection\Parameter;
 use Symfony\Component\DependencyInjection\Reference;
 
 class DefinitionTest extends TestCase
@@ -49,6 +50,18 @@ public function testSetGetClass()
         $this->assertEquals('foo', $def->getClass(), '->getClass() returns the class name');
     }
 
+    /**
+     * @group legacy
+     * @expectedDeprecation Passing an instance of Symfony\Component\DependencyInjection\Parameter as class name to Symfony\Component\DependencyInjection\Definition in deprecated in Symfony 4.4 and will result in a TypeError in 5.0. Please pass the string "%parameter%" instead.
+     */
+    public function testSetGetClassWithParameter()
+    {
+        $def = new Definition('stdClass');
+        $parameter = new Parameter('parameter');
+        $this->assertSame($def, $def->setClass($parameter), '->setClass() implements a fluent interface');
+        $this->assertSame($parameter, $def->getClass(), '->getClass() returns the parameterized class name');
+    }
+
     public function testSetGetDecoratedService()
     {
         $def = new Definition('stdClass');
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Dumper/PhpDumperTest.php b/src/Symfony/Component/DependencyInjection/Tests/Dumper/PhpDumperTest.php
@@ -1082,7 +1082,7 @@ public function testDumpHandlesObjectClassNames()
             'class' => 'stdClass',
         ]));
 
-        $container->setDefinition('foo', new Definition(new Parameter('class')));
+        $container->setDefinition('foo', new Definition('%class%'));
         $container->setDefinition('bar', new Definition('stdClass', [
             new Reference('foo'),
         ]))->setPublic(true);
