Add support for enum to Utils::stringifyValue in order to support enum as default value of class property

composer.json

@@ -19,6 +19,11 @@
             "Murtukov\\PHPCodeGenerator\\": "src/"
         }
     },
+    "autoload-dev": {
+        "psr-4": {
+            "Tests\\": "tests/"
+        }
+    },
     "require-dev": {
         "phpstan/phpstan": "^1.12.4",
         "phpunit/phpunit": "^10",

src/Utils.php

@@ -96,6 +96,10 @@ private static function stringifyValue(mixed $value, bool $topLevel = false): st
 
             case 'object':
                 if (!$value instanceof GeneratorInterface) {
+                    if (enum_exists($value::class)) {
+                        return '\\'.$value::class.'::'.$value->name;
+                    }
+
                     try {
                         $result = json_encode($value->__toString());
 

tests/Fixtures/BasicEnum.php

@@ -0,0 +1,9 @@
+<?php
+
+namespace Tests\Fixtures;
+
+enum BasicEnum
+{
+    case ONE;
+    case TWO;
+}

tests/Fixtures/StringBackedEnum.php

@@ -0,0 +1,9 @@
+<?php
+
+namespace Tests\Fixtures;
+
+enum StringBackedEnum: string
+{
+    case ONE = 'one';
+    case TWO = 'two';
+}

tests/UtilsTest.php

@@ -4,6 +4,8 @@
 
 use Murtukov\PHPCodeGenerator\Utils;
 use PHPUnit\Framework\TestCase;
+use Tests\Fixtures\BasicEnum;
+use Tests\Fixtures\StringBackedEnum;
 
 class UtilsTest extends TestCase
 {
@@ -26,6 +28,22 @@ public function __toString(): string
         Utils::stringify(new stdClass());
     }
 
+    /**
+     * @test
+     */
+    public function stringifyEnum(): void
+    {
+        $this->assertEquals('\\Tests\\Fixtures\\BasicEnum::ONE', Utils::stringify(BasicEnum::ONE));
+    }
+
+    /**
+     * @test
+     */
+    public function stringifyBackedEnum(): void
+    {
+        $this->assertEquals('\\Tests\\Fixtures\\StringBackedEnum::ONE', Utils::stringify(StringBackedEnum::ONE));
+    }
+
     /**
      * @test
      */