Dumper: support enums (#86)

Co-authored-by: David Grudl <david@grudl.com>

src/PhpGenerator/Dumper.php

@@ -122,7 +122,8 @@ private function dumpObject(&$var, array $parents, int $level): string
 	{
 		if ($var instanceof \Serializable) {
 			return 'unserialize(' . $this->dumpString(serialize($var)) . ')';
-
+		} elseif ($var instanceof \UnitEnum) {
+			return get_class($var) . '::' . $var->name;
 		} elseif ($var instanceof \Closure) {
 			throw new Nette\InvalidArgumentException('Cannot dump closure.');
 		}

tests/PhpGenerator/Dumper.dump().enum.phpt

@@ -0,0 +1,26 @@
+<?php
+
+/**
+ * Test: Nette\PhpGenerator\Dumper::dump() enum
+ * @phpVersion 8.1
+ */
+
+declare(strict_types=1);
+
+use Nette\PhpGenerator\Dumper;
+use Nette\PhpGenerator\PhpLiteral;
+use Tester\Assert;
+
+
+require __DIR__ . '/../bootstrap.php';
+
+
+enum Suit {
+	case Clubs;
+	case Diamonds;
+	case Hearts;
+	case Spades;
+}
+
+$dumper = new Dumper;
+Assert::same('Suit::Clubs', $dumper->dump(Suit::Clubs));