1 files changed, 42 insertions, 1 deletions
diff --git a/vendor/sabre/xml/lib/Deserializer/functions.php b/vendor/sabre/xml/lib/Deserializer/functions.php
index 0eff4b7e0..c4f240970 100644
--- a/vendor/sabre/xml/lib/Deserializer/functions.php
+++ b/vendor/sabre/xml/lib/Deserializer/functions.php
@@ -173,7 +173,7 @@ function enum(Reader $reader, string $namespace = null): array
         if (!is_null($namespace) && $namespace === $reader->namespaceURI) {
             $values[] = $reader->localName;
         } else {
-            $values[] = $reader->getClark();
+            $values[] = (string) $reader->getClark();
         }
     } while ($reader->depth >= $currentDepth && $reader->next());
 
@@ -316,3 +316,44 @@ function mixedContent(Reader $reader): array
 
     return $content;
 }
+
+/**
+ * The functionCaller deserializer turns an xml element into whatever your callable return.
+ *
+ * You can use, e.g., a named constructor (factory method) to create an object using
+ * this function.
+ *
+ * @return mixed
+ */
+function functionCaller(Reader $reader, callable $func, string $namespace)
+{
+    if ($reader->isEmptyElement) {
+        $reader->next();
+
+        return null;
+    }
+
+    $funcArgs = [];
+    $func = is_string($func) && false !== strpos($func, '::') ? explode('::', $func) : $func;
+    $ref = is_array($func) ? new \ReflectionMethod($func[0], $func[1]) : new \ReflectionFunction($func);
+    foreach ($ref->getParameters() as $parameter) {
+        $funcArgs[$parameter->getName()] = null;
+    }
+
+    $reader->read();
+    do {
+        if (Reader::ELEMENT === $reader->nodeType && $reader->namespaceURI == $namespace) {
+            if (array_key_exists($reader->localName, $funcArgs)) {
+                $funcArgs[$reader->localName] = $reader->parseCurrentElement()['value'];
+            } else {
+                // Ignore property
+                $reader->next();
+            }
+        } else {
+            $reader->read();
+        }
+    } while (Reader::END_ELEMENT !== $reader->nodeType);
+    $reader->read();
+
+    return $func(...array_values($funcArgs));
+}