serializer optimisation

Author: mmasiukevich

composer.lock

@@ -41,6 +41,6 @@ public function denormalize($data, $class, $format = null, array $context = []):
      */
     public function supportsDenormalization($data, $type, $format = null, array $context = []): bool
     {
-        return \is_array($data) && 0 === \count($data);
+        return empty($data);
     }
 }

src/Symfony/Extensions/EmptyDataDenormalizer.php

@@ -19,6 +19,11 @@
  */
 final class EmptyDataNormalizer implements NormalizerInterface
 {
+    /**
+     * @var array<string, array<array-key, string>>
+     */
+    private $localStorage = [];
+
     /**
      * @inheritdoc
      */
@@ -36,9 +41,23 @@ public function supportsNormalization($data, $format = null): bool
     {
         if(true === \is_object($data))
         {
-            return 0 === \count((new \ReflectionClass($data))->getProperties());
+            $class = \get_class($data);
+
+            if(false === isset($this->localStorage[$class]))
+            {
+                $this->localStorage[$class] = \array_map(
+                    static function(\ReflectionProperty $property): string
+                    {
+                        return (string) $property->name;
+                    },
+                    (new \ReflectionClass($data))->getProperties()
+                );
+            }
+
+            return empty($this->localStorage[$class]);
         }
 
         return false;
     }
+
 }

src/Symfony/Extensions/EmptyDataNormalizer.php

@@ -39,7 +39,7 @@ public function normalize($propertyName): string
      */
     public function denormalize($propertyName): string
     {
-        if(false === isset($this->cache[$propertyName]))
+        if(false === isset($this->localStorage[$propertyName]))
         {
             $joinedString = \preg_replace_callback(
                 '/_(.?)/',

src/Symfony/Extensions/PropertyNameConverter.php

@@ -21,6 +21,11 @@
  */
 final class PropertyNormalizerWrapper extends PropertyNormalizer
 {
+    /**
+     * @var array<string, array<array-key, string>>
+     */
+    private $localStorage = [];
+
     /**
      * @inheritdoc
      *
@@ -37,4 +42,23 @@ protected function instantiateObject(
     {
         return $reflectionClass->newInstanceWithoutConstructor();
     }
+
+    /**
+     * @inheritdoc
+     *
+     * @param object      $object
+     * @param string|null $format
+     * @param array       $context
+     */
+    protected function extractAttributes($object, $format = null, array $context = []): array
+    {
+        $class = \get_class($object);
+
+        if(false === isset($this->localStorage[$class]))
+        {
+            $this->localStorage[$class] = parent::extractAttributes($object, $format, $context);
+        }
+
+        return $this->localStorage[$class];
+    }
 }