Use legacy name in php runtime (#4741)

* Use legacy name in php runtime

Old generated code cannot work with new runtime, because the new runtime
assumes new class name for nested message. For details see #4738.

* Remove unused method

1 files changed, 14 insertions, 0 deletions

diff --git a/php/src/Google/Protobuf/Internal/EnumDescriptor.php b/php/src/Google/Protobuf/Internal/EnumDescriptor.php
index 01649fec..82a42767 100644
--- a/php/src/Google/Protobuf/Internal/EnumDescriptor.php
+++ b/php/src/Google/Protobuf/Internal/EnumDescriptor.php
@@ -9,6 +9,7 @@ class EnumDescriptor
     use HasPublicDescriptorTrait;
 
     private $klass;
+    private $legacy_klass;
     private $full_name;
     private $value;
     private $name_to_value;
@@ -66,12 +67,23 @@ class EnumDescriptor
         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,
@@ -79,9 +91,11 @@ class EnumDescriptor
             $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);