Add enum filter implementation (#11)

* Add enum filter implementation
* class of object in InvalidTypeException instead of "object"

Author: wol-soft

src/Exception/Generic/InvalidTypeException.php

@@ -32,7 +32,7 @@ public function __construct($providedValue, string $propertyName, $expectedType)
                 'Invalid type for %s. Requires %s, got %s',
                 $propertyName,
                 is_array($expectedType) ? '[' . join(', ', $expectedType) . ']' : $expectedType,
-                gettype($providedValue)),
+                is_object($providedValue) ? get_class($providedValue) : gettype($providedValue)),
             $propertyName,
             $providedValue
         );

src/Filter/Enum.php

@@ -0,0 +1,21 @@
+<?php
+
+declare(strict_types = 1);
+
+namespace PHPModelGenerator\Filter;
+
+use BackedEnum;
+use UnitEnum;
+
+class Enum
+{
+    public static function filter($value, $options): ?UnitEnum
+    {
+        return $value === null ? null : $options['fqcn']::from($value);
+    }
+
+    public static function serialize(?UnitEnum $value): mixed
+    {
+        return $value instanceof BackedEnum ? $value?->value : $value?->value();
+    }
+}