feat(transformer): tag custom transfer to be automatically injected

composer.json

@@ -29,9 +29,6 @@
         "symfony/uid": "^6.3 || ^7.0",
         "symfony/yaml": "^6.3 || ^7.0"
     },
-    "conflict": {
-        "symfony/framework-bundle": "5.1.0"
-    },
     "autoload": {
         "psr-4": {
             "AutoMapper\\Bundle\\": "src/"

src/DependencyInjection/AutoMapperExtension.php

@@ -13,6 +13,7 @@
 use AutoMapper\MapperGeneratorMetadataFactory;
 use AutoMapper\MapperGeneratorMetadataInterface;
 use AutoMapper\Normalizer\AutoMapperNormalizer;
+use AutoMapper\Transformer\CustomTransformer\CustomTransformerInterface;
 use AutoMapper\Transformer\CustomTransformer\CustomTransformersRegistry;
 use AutoMapper\Transformer\SymfonyUidTransformerFactory;
 use AutoMapper\Transformer\TransformerFactoryInterface;
@@ -59,6 +60,10 @@ public function load(array $configs, ContainerBuilder $container): void
         $container->getDefinition(FileLoader::class)->replaceArgument(2, $config['hot_reload']);
         $container->registerForAutoconfiguration(TransformerFactoryInterface::class)->addTag('automapper.transformer_factory');
 
+        if (interface_exists(CustomTransformerInterface::class)) {
+            $container->registerForAutoconfiguration(CustomTransformerInterface::class)->addTag('automapper.custom_transformer');
+        }
+
         if (class_exists(AbstractUid::class)) {
             $container
                 ->getDefinition(SymfonyUidTransformerFactory::class)

src/DependencyInjection/Compiler/TransformerFactoryPass.php

@@ -4,6 +4,9 @@
 
 use AutoMapper\Generator\Generator;
 use AutoMapper\Transformer\ChainTransformerFactory;
+use AutoMapper\Transformer\CustomTransformer\CustomTransformerFactory;
+use AutoMapper\Transformer\CustomTransformer\CustomTransformerInterface;
+use AutoMapper\Transformer\CustomTransformer\CustomTransformersRegistry;
 use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;
 use Symfony\Component\DependencyInjection\Compiler\PriorityTaggedServiceTrait;
 use Symfony\Component\DependencyInjection\ContainerBuilder;
@@ -29,5 +32,13 @@ public function process(ContainerBuilder $container): void
         } else {
             $definition->replaceArgument(0, $selectors);
         }
+
+        if (interface_exists(CustomTransformerInterface::class)) {
+            $registry = $container->getDefinition(CustomTransformersRegistry::class);
+
+            foreach ($this->findAndSortTaggedServices('automapper.custom_transformer', $container) as $definition) {
+                $registry->addMethodCall('addCustomTransformer', [$definition]);
+            }
+        }
     }
 }

src/Resources/config/custom_transformers.xml

@@ -5,5 +5,10 @@
 
     <services>
         <service id="AutoMapper\Transformer\CustomTransformer\CustomTransformersRegistry" />
+
+        <service id="AutoMapper\Transformer\CustomTransformer\CustomTransformerFactory">
+            <argument type="service" id="AutoMapper\Transformer\CustomTransformer\CustomTransformersRegistry" />
+            <tag name="automapper.transformer_factory" priority="1003" />
+        </service>
     </services>
 </container>

tests/Resources/App/AppKernel.php

@@ -13,6 +13,9 @@
 use AutoMapper\Bundle\Tests\Fixtures\UserDTO;
 use AutoMapper\MapperGeneratorMetadataInterface;
 use AutoMapper\MapperMetadata;
+use AutoMapper\Transformer\CustomTransformer\CustomModelTransformer;
+use AutoMapper\Transformer\CustomTransformer\CustomModelTransformerInterface;
+use AutoMapper\Transformer\CustomTransformer\CustomPropertyTransformerInterface;
 use Symfony\Bundle\FrameworkBundle\FrameworkBundle;
 use Symfony\Bundle\FrameworkBundle\Kernel\MicroKernelTrait;
 use Symfony\Component\Config\Loader\LoaderInterface;
@@ -59,27 +62,53 @@ public function getProjectDir(): string
     }
 }
 
-class UserMapperConfiguration implements MapperConfigurationInterface
-{
-    public function getSource(): string
+if (interface_exists(CustomPropertyTransformerInterface::class)) {
+    class YearOfBirthTransformer implements CustomPropertyTransformerInterface
     {
-        return User::class;
+        public function transform(object|array $user): mixed
+        {
+            assert($user instanceof User);
+
+            return ((int) date('Y')) - ((int) $user->age);
+        }
+
+        public function supports(string $source, string $target, string $propertyName): bool
+        {
+            return User::class === $source && UserDTO::class === $target && 'yearOfBirth' === $propertyName;
+        }
     }
 
-    public function getTarget(): string
+    class UserMapperConfiguration
     {
-        return UserDTO::class;
-    }
 
-    public function process(MapperGeneratorMetadataInterface $metadata): void
+    }
+} else {
+    class UserMapperConfiguration implements MapperConfigurationInterface
     {
-        if (!$metadata instanceof MapperMetadata) {
-            return;
+        public function getSource(): string
+        {
+            return User::class;
         }
 
-        $metadata->forMember('yearOfBirth', function (User $user) {
-            return ((int) date('Y')) - ((int) $user->age);
-        });
+        public function getTarget(): string
+        {
+            return UserDTO::class;
+        }
+
+        public function process(MapperGeneratorMetadataInterface $metadata): void
+        {
+            if (!$metadata instanceof MapperMetadata) {
+                return;
+            }
+
+            $metadata->forMember('yearOfBirth', function (User $user) {
+                return ((int) date('Y')) - ((int) $user->age);
+            });
+        }
+    }
+
+    class YearOfBirthTransformer
+    {
     }
 }
 

tests/Resources/App/config.yml

@@ -14,6 +14,7 @@ services:
   _defaults:
     autoconfigure: true
 
+  DummyApp\YearOfBirthTransformer: ~
   DummyApp\UserMapperConfiguration: ~
   DummyApp\IdNameConverter: ~
   AutoMapper\Bundle\Tests\Resources\App\Transformer\MoneyTransformerFactory: ~