First prototype
diff --git a/vendor/google/protobuf/src/Google/Protobuf/Internal/EnumDescriptor.php b/vendor/google/protobuf/src/Google/Protobuf/Internal/EnumDescriptor.php
new file mode 100644
index 0000000..7af4f84
--- /dev/null
+++ b/vendor/google/protobuf/src/Google/Protobuf/Internal/EnumDescriptor.php
@@ -0,0 +1,115 @@
+<?php
+
+namespace Google\Protobuf\Internal;
+
+use Google\Protobuf\EnumValueDescriptor;
+
+class EnumDescriptor
+{
+    use HasPublicDescriptorTrait;
+
+    private $klass;
+    private $legacy_klass;
+    private $full_name;
+    private $value;
+    private $name_to_value;
+    private $value_descriptor = [];
+
+    public function __construct()
+    {
+        $this->public_desc = new \Google\Protobuf\EnumDescriptor($this);
+    }
+
+    public function setFullName($full_name)
+    {
+        $this->full_name = $full_name;
+    }
+
+    public function getFullName()
+    {
+        return $this->full_name;
+    }
+
+    public function addValue($number, $value)
+    {
+        $this->value[$number] = $value;
+        $this->name_to_value[$value->getName()] = $value;
+        $this->value_descriptor[] = new EnumValueDescriptor($value->getName(), $number);
+    }
+
+    public function getValueByNumber($number)
+    {
+        if (isset($this->value[$number])) {
+            return $this->value[$number];
+        }
+        return null;
+    }
+
+    public function getValueByName($name)
+    {
+        if (isset($this->name_to_value[$name])) {
+            return $this->name_to_value[$name];
+        }
+        return null;
+    }
+
+    public function getValueDescriptorByIndex($index)
+    {
+        if (isset($this->value_descriptor[$index])) {
+            return $this->value_descriptor[$index];
+        }
+        return null;
+    }
+
+    public function getValueCount()
+    {
+        return count($this->value);
+    }
+
+    public function setClass($klass)
+    {
+        $this->klass = $klass;
+    }
+
+    public function getClass()
+    {
+        return $this->klass;
+    }
+
+    public function setLegacyClass($klass)
+    {
+        $this->legacy_klass = $klass;
+    }
+
+    public function getLegacyClass()
+    {
+        return $this->legacy_klass;
+    }
+
+    public static function buildFromProto($proto, $file_proto, $containing)
+    {
+        $desc = new EnumDescriptor();
+
+        $enum_name_without_package  = "";
+        $classname = "";
+        $legacy_classname = "";
+        $fullname = "";
+        GPBUtil::getFullClassName(
+            $proto,
+            $containing,
+            $file_proto,
+            $enum_name_without_package,
+            $classname,
+            $legacy_classname,
+            $fullname);
+        $desc->setFullName($fullname);
+        $desc->setClass($classname);
+        $desc->setLegacyClass($legacy_classname);
+        $values = $proto->getValue();
+        foreach ($values as $value) {
+            $desc->addValue($value->getNumber(), $value);
+        }
+
+        return $desc;
+    }
+}