Actualización

vendor/symfony/serializer/NameConverter/CamelCaseToSnakeCaseNameConverter.php

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+<?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\Component\Serializer\NameConverter;
+
+/**
+ * CamelCase to Underscore name converter.
+ *
+ * @author Kévin Dunglas <dunglas@gmail.com>
+ */
+class CamelCaseToSnakeCaseNameConverter implements NameConverterInterface
+{
+    private $attributes;
+    private $lowerCamelCase;
+
+    /**
+     * @param array|null $attributes     The list of attributes to rename or null for all attributes
+     * @param bool       $lowerCamelCase Use lowerCamelCase style
+     */
+    public function __construct(array $attributes = null, $lowerCamelCase = true)
+    {
+        $this->attributes = $attributes;
+        $this->lowerCamelCase = $lowerCamelCase;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function normalize($propertyName)
+    {
+        if (null === $this->attributes || \in_array($propertyName, $this->attributes)) {
+            return strtolower(preg_replace('/[A-Z]/', '_\\0', lcfirst($propertyName)));
+        }
+
+        return $propertyName;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function denormalize($propertyName)
+    {
+        $camelCasedName = preg_replace_callback('/(^|_|\.)+(.)/', function ($match) {
+            return ('.' === $match[1] ? '_' : '').strtoupper($match[2]);
+        }, $propertyName);
+
+        if ($this->lowerCamelCase) {
+            $camelCasedName = lcfirst($camelCasedName);
+        }
+
+        if (null === $this->attributes || \in_array($camelCasedName, $this->attributes)) {
+            return $camelCasedName;
+        }
+
+        return $propertyName;
+    }
+}