feat: DTO\Caster\BackedEnumCaster

hwe/sammo/DTO/Caster/BackedEnumCaster.php

@@ -0,0 +1,27 @@
+<?php
+namespace sammo\DTO\Caster;
+use Spatie\DataTransferObject\Caster;
+
+class BackedEnumCaster implements Caster
+{
+    private \ReflectionMethod $backedEnumFrom;
+    public function __construct(
+        array $type,
+    ) {
+        $enumType = $type[0] ?? null;
+        if(!is_subclass_of($enumType, \BackedEnum::class)){
+            throw new \Exception('Not BackedEnum: '.$enumType);
+        }
+        $reflector = new \ReflectionEnum($enumType);
+        $this->backedEnumFrom = $reflector->getMethod('from');
+    }
+
+    public function cast(mixed $value): \BackedEnum
+    {
+        if(!is_string($value) && !is_int($value)){
+            throw new \Exception('BackedEnumCaster only accepts string|int');
+        }
+
+        return $this->backedEnumFrom->invoke(null, $value);
+    }
+}