minor #2201 [TwigComponent] Optimize ComponentFactory (smnandre)

This PR was squashed before being merged into the 2.x branch.

Discussion
----------

[TwigComponent] Optimize ComponentFactory

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | no
| Issues        | Fix #...
| License       | MIT

Some internal refactor focused on the Component Factory / Anonymous components usage.

* Optimize the hot path
* Store anonymous template resolution
* Avoid anonymous checks for class-based components
* Add ComponentFactory unit tests
* Add ComponentMetadata::isAnonymous() method
* Fix loop
* Reuse metadata to instanciate and mount component

Other PRs will follow :)

Commits
-------

da0537d [TwigComponent] Optimize ComponentFactory

src/TwigComponent/src/ComponentFactory.php

@@ -41,32 +41,42 @@ public function __construct(
 
     public function metadataFor(string $name): ComponentMetadata
     {
-        $name = $this->classMap[$name] ?? $name;
-
-        if (!$config = $this->config[$name] ?? null) {
-            if (($template = $this->componentTemplateFinder->findAnonymousComponentTemplate($name)) !== null) {
-                return new ComponentMetadata([
-                    'key' => $name,
-                    'template' => $template,
-                ]);
+        if ($config = $this->config[$name] ?? null) {
+            return new ComponentMetadata($config);
+        }
+
+        if ($template = $this->componentTemplateFinder->findAnonymousComponentTemplate($name)) {
+            $this->config[$name] = [
+                'key' => $name,
+                'template' => $template,
+            ];
+
+            return new ComponentMetadata($this->config[$name]);
+        }
+
+        if ($mappedName = $this->classMap[$name] ?? null) {
+            if ($config = $this->config[$mappedName] ?? null) {
+                return new ComponentMetadata($config);
             }
 
-            $this->throwUnknownComponentException($name);
+            throw new \InvalidArgumentException(\sprintf('Unknown component "%s".', $name));
         }
 
-        return new ComponentMetadata($config);
+        $this->throwUnknownComponentException($name);
     }
 
     /**
      * Creates the component and "mounts" it with the passed data.
      */
     public function create(string $name, array $data = []): MountedComponent
     {
-        return $this->mountFromObject(
-            $this->getComponent($name),
-            $data,
-            $this->metadataFor($name)
-        );
+        $metadata = $this->metadataFor($name);
+
+        if ($metadata->isAnonymous()) {
+            return $this->mountFromObject(new AnonymousComponent(), $data, $metadata);
+        }
+
+        return $this->mountFromObject($this->components->get($metadata->getName()), $data, $metadata);
     }
 
     /**
@@ -101,10 +111,7 @@ public function mountFromObject(object $component, array $data, ComponentMetadat
         foreach ($data as $key => $value) {
             if ($value instanceof \Stringable) {
                 $data[$key] = (string) $value;
-                continue;
             }
-
-            $data[$key] = $value;
         }
 
         return new MountedComponent(
@@ -118,10 +125,18 @@ public function mountFromObject(object $component, array $data, ComponentMetadat
 
     /**
      * Returns the "unmounted" component.
+     *
+     * @internal
      */
     public function get(string $name): object
     {
-        return $this->getComponent($name);
+        $metadata = $this->metadataFor($name);
+
+        if ($metadata->isAnonymous()) {
+            return new AnonymousComponent();
+        }
+
+        return $this->components->get($metadata->getName());
     }
 
     private function mount(object $component, array &$data): void
@@ -159,21 +174,6 @@ private function mount(object $component, array &$data): void
         $component->mount(...$parameters);
     }
 
-    private function getComponent(string $name): object
-    {
-        $name = $this->classMap[$name] ?? $name;
-
-        if (!$this->components->has($name)) {
-            if ($this->isAnonymousComponent($name)) {
-                return new AnonymousComponent();
-            }
-
-            $this->throwUnknownComponentException($name);
-        }
-
-        return $this->components->get($name);
-    }
-
     private function preMount(object $component, array $data, ComponentMetadata $componentMetadata): array
     {
         $event = new PreMountEvent($component, $data, $componentMetadata);
@@ -215,11 +215,6 @@ private function postMount(object $component, array $data, ComponentMetadata $co
         ];
     }
 
-    private function isAnonymousComponent(string $name): bool
-    {
-        return null !== $this->componentTemplateFinder->findAnonymousComponentTemplate($name);
-    }
-
     /**
      * @return never
      */

src/TwigComponent/src/ComponentMetadata.php

@@ -57,6 +57,11 @@ public function isPublicPropsExposed(): bool
         return $this->get('expose_public_props', false);
     }
 
+    public function isAnonymous(): bool
+    {
+        return !isset($this->config['service_id']);
+    }
+
     public function getAttributesVar(): string
     {
         return $this->get('attributes_var', 'attributes');

src/TwigComponent/tests/Unit/ComponentFactoryTest.php

@@ -0,0 +1,92 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\UX\TwigComponent\Tests\Unit;
+
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\DependencyInjection\ServiceLocator;
+use Symfony\Component\PropertyAccess\PropertyAccessorInterface;
+use Symfony\Contracts\EventDispatcher\EventDispatcherInterface;
+use Symfony\UX\TwigComponent\ComponentFactory;
+use Symfony\UX\TwigComponent\ComponentTemplateFinderInterface;
+
+/**
+ * @author Simon André <smn.andre@gmail.com>
+ */
+class ComponentFactoryTest extends TestCase
+{
+    public function testMetadataForConfig(): void
+    {
+        $factory = new ComponentFactory(
+            $this->createMock(ComponentTemplateFinderInterface::class),
+            $this->createMock(ServiceLocator::class),
+            $this->createMock(PropertyAccessorInterface::class),
+            $this->createMock(EventDispatcherInterface::class),
+            ['foo' => ['key' => 'foo', 'template' => 'bar.html.twig']],
+            []
+        );
+
+        $metadata = $factory->metadataFor('foo');
+
+        $this->assertSame('foo', $metadata->getName());
+        $this->assertSame('bar.html.twig', $metadata->getTemplate());
+    }
+
+    public function testMetadataForResolveAlias(): void
+    {
+        $factory = new ComponentFactory(
+            $this->createMock(ComponentTemplateFinderInterface::class),
+            $this->createMock(ServiceLocator::class),
+            $this->createMock(PropertyAccessorInterface::class),
+            $this->createMock(EventDispatcherInterface::class),
+            [
+                'bar' => ['key' => 'bar', 'template' => 'bar.html.twig'],
+                'foo' => ['key' => 'foo', 'template' => 'foo.html.twig'],
+            ],
+            ['Foo\\Bar' => 'bar'],
+        );
+
+        $metadata = $factory->metadataFor('Foo\\Bar');
+
+        $this->assertSame('bar', $metadata->getName());
+        $this->assertSame('bar.html.twig', $metadata->getTemplate());
+    }
+
+    public function testMetadataForReuseAnonymousConfig(): void
+    {
+        $templateFinder = $this->createMock(ComponentTemplateFinderInterface::class);
+        $templateFinder->expects($this->atLeastOnce())
+            ->method('findAnonymousComponentTemplate')
+            ->with('foo')
+            ->willReturnOnConsecutiveCalls('foo.html.twig', 'bar.html.twig', 'bar.html.twig');
+
+        $factory = new ComponentFactory(
+            $templateFinder,
+            $this->createMock(ServiceLocator::class),
+            $this->createMock(PropertyAccessorInterface::class),
+            $this->createMock(EventDispatcherInterface::class),
+            [],
+            []
+        );
+
+        $metadata = $factory->metadataFor('foo');
+        $this->assertSame('foo', $metadata->getName());
+        $this->assertSame('foo.html.twig', $metadata->getTemplate());
+
+        $metadata = $factory->metadataFor('foo');
+        $this->assertSame('foo', $metadata->getName());
+        $this->assertSame('foo.html.twig', $metadata->getTemplate());
+
+        $metadata = $factory->metadataFor('foo');
+        $this->assertSame('foo', $metadata->getName());
+        $this->assertSame('foo.html.twig', $metadata->getTemplate());
+    }
+}