diff --git a/composer.json b/composer.json
index 9fcad252b..58fa41d10 100644
--- a/composer.json
+++ b/composer.json
@@ -6,8 +6,8 @@
         "php": "~8.0.12 || ~8.1.0",
         "ext-json": "*",
         "jetbrains/phpstorm-stubs": "2022.2",
-        "nikic/php-parser": "^4.14.0",
-        "roave/signature": "^1.5"
+        "nikic/php-parser": "^4.15.1",
+        "roave/signature": "^1.6"
     },
     "authors": [
         {
@@ -34,11 +34,11 @@
     ],
     "require-dev": {
         "doctrine/coding-standard": "^10.0.0",
-        "phpstan/phpstan": "^1.8.2",
+        "phpstan/phpstan": "^1.8.5",
         "phpstan/phpstan-phpunit": "^1.1.1",
-        "phpunit/phpunit": "^9.5.23",
-        "vimeo/psalm": "^4.26",
-        "roave/infection-static-analysis-plugin": "^1.21.0"
+        "phpunit/phpunit": "^9.5.24",
+        "vimeo/psalm": "^4.27",
+        "roave/infection-static-analysis-plugin": "^1.23.0"
     },
     "autoload": {
         "psr-4": {
diff --git a/composer.lock b/composer.lock
index 5109d5db0..ed7f1b20b 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "fed91762a9cedc06cfd307840acec84d",
+    "content-hash": "1660e2990add72e280e1d1b3b7f645e7",
     "packages": [
         {
             "name": "jetbrains/phpstorm-stubs",
@@ -56,16 +56,16 @@
         },
         {
             "name": "nikic/php-parser",
-            "version": "v4.14.0",
+            "version": "v4.15.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/nikic/PHP-Parser.git",
-                "reference": "34bea19b6e03d8153165d8f30bba4c3be86184c1"
+                "reference": "0ef6c55a3f47f89d7a374e6f835197a0b5fcf900"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/nikic/PHP-Parser/zipball/34bea19b6e03d8153165d8f30bba4c3be86184c1",
-                "reference": "34bea19b6e03d8153165d8f30bba4c3be86184c1",
+                "url": "https://api.github.com/repos/nikic/PHP-Parser/zipball/0ef6c55a3f47f89d7a374e6f835197a0b5fcf900",
+                "reference": "0ef6c55a3f47f89d7a374e6f835197a0b5fcf900",
                 "shasum": ""
             },
             "require": {
@@ -106,32 +106,32 @@
             ],
             "support": {
                 "issues": "https://github.com/nikic/PHP-Parser/issues",
-                "source": "https://github.com/nikic/PHP-Parser/tree/v4.14.0"
+                "source": "https://github.com/nikic/PHP-Parser/tree/v4.15.1"
             },
-            "time": "2022-05-31T20:59:12+00:00"
+            "time": "2022-09-04T07:30:47+00:00"
         },
         {
             "name": "roave/signature",
-            "version": "1.5.0",
+            "version": "1.6.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/Roave/Signature.git",
-                "reference": "b100e2c40e51f3c56a0b29faf3e7ca75c33df60b"
+                "reference": "ed898589a3088217e6aa4f4a77d7b2b8f5e91a8a"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/Roave/Signature/zipball/b100e2c40e51f3c56a0b29faf3e7ca75c33df60b",
-                "reference": "b100e2c40e51f3c56a0b29faf3e7ca75c33df60b",
+                "url": "https://api.github.com/repos/Roave/Signature/zipball/ed898589a3088217e6aa4f4a77d7b2b8f5e91a8a",
+                "reference": "ed898589a3088217e6aa4f4a77d7b2b8f5e91a8a",
                 "shasum": ""
             },
             "require": {
-                "php": "7.4.*|8.0.*|8.1.*"
+                "php": "7.4.*|8.0.*|8.1.*|8.2.*"
             },
             "require-dev": {
-                "doctrine/coding-standard": "^9.0",
-                "infection/infection": "^0.25.1",
+                "doctrine/coding-standard": "^10.0.0",
+                "infection/infection": "^0.26.6",
                 "phpunit/phpunit": "^9.5.9",
-                "vimeo/psalm": "^4.10.1"
+                "vimeo/psalm": "^4.27.0"
             },
             "type": "library",
             "autoload": {
@@ -146,9 +146,9 @@
             "description": "Sign and verify stuff",
             "support": {
                 "issues": "https://github.com/Roave/Signature/issues",
-                "source": "https://github.com/Roave/Signature/tree/1.5.0"
+                "source": "https://github.com/Roave/Signature/tree/1.6.0"
             },
-            "time": "2021-09-18T13:37:44+00:00"
+            "time": "2022-09-06T11:01:18+00:00"
         }
     ],
     "packages-dev": [
@@ -1126,16 +1126,16 @@
         },
         {
             "name": "infection/infection",
-            "version": "0.26.13",
+            "version": "0.26.14",
             "source": {
                 "type": "git",
                 "url": "https://github.com/infection/infection.git",
-                "reference": "c2f121b1f86af20b1373236535abfe06e5358224"
+                "reference": "d35e0795d64c2a1e030e63c51fbf6b37991b08d2"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/infection/infection/zipball/c2f121b1f86af20b1373236535abfe06e5358224",
-                "reference": "c2f121b1f86af20b1373236535abfe06e5358224",
+                "url": "https://api.github.com/repos/infection/infection/zipball/d35e0795d64c2a1e030e63c51fbf6b37991b08d2",
+                "reference": "d35e0795d64c2a1e030e63c51fbf6b37991b08d2",
                 "shasum": ""
             },
             "require": {
@@ -1144,6 +1144,7 @@
                 "ext-dom": "*",
                 "ext-json": "*",
                 "ext-libxml": "*",
+                "ext-mbstring": "*",
                 "infection/abstract-testframework-adapter": "^0.5.0",
                 "infection/extension-installer": "^0.1.0",
                 "infection/include-interceptor": "^0.2.5",
@@ -1235,7 +1236,7 @@
             ],
             "support": {
                 "issues": "https://github.com/infection/infection/issues",
-                "source": "https://github.com/infection/infection/tree/0.26.13"
+                "source": "https://github.com/infection/infection/tree/0.26.14"
             },
             "funding": [
                 {
@@ -1247,7 +1248,7 @@
                     "type": "open_collective"
                 }
             ],
-            "time": "2022-06-23T12:48:45+00:00"
+            "time": "2022-08-31T21:53:53+00:00"
         },
         {
             "name": "justinrainbow/json-schema",
@@ -1878,16 +1879,16 @@
         },
         {
             "name": "phpstan/phpstan",
-            "version": "1.8.2",
+            "version": "1.8.5",
             "source": {
                 "type": "git",
                 "url": "https://github.com/phpstan/phpstan.git",
-                "reference": "c53312ecc575caf07b0e90dee43883fdf90ca67c"
+                "reference": "f6598a5ff12ca4499a836815e08b4d77a2ddeb20"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/phpstan/phpstan/zipball/c53312ecc575caf07b0e90dee43883fdf90ca67c",
-                "reference": "c53312ecc575caf07b0e90dee43883fdf90ca67c",
+                "url": "https://api.github.com/repos/phpstan/phpstan/zipball/f6598a5ff12ca4499a836815e08b4d77a2ddeb20",
+                "reference": "f6598a5ff12ca4499a836815e08b4d77a2ddeb20",
                 "shasum": ""
             },
             "require": {
@@ -1911,9 +1912,13 @@
                 "MIT"
             ],
             "description": "PHPStan - PHP Static Analysis Tool",
+            "keywords": [
+                "dev",
+                "static analysis"
+            ],
             "support": {
                 "issues": "https://github.com/phpstan/phpstan/issues",
-                "source": "https://github.com/phpstan/phpstan/tree/1.8.2"
+                "source": "https://github.com/phpstan/phpstan/tree/1.8.5"
             },
             "funding": [
                 {
@@ -1924,16 +1929,12 @@
                     "url": "https://github.com/phpstan",
                     "type": "github"
                 },
-                {
-                    "url": "https://www.patreon.com/phpstan",
-                    "type": "patreon"
-                },
                 {
                     "url": "https://tidelift.com/funding/github/packagist/phpstan/phpstan",
                     "type": "tidelift"
                 }
             ],
-            "time": "2022-07-20T09:57:31+00:00"
+            "time": "2022-09-07T16:05:32+00:00"
         },
         {
             "name": "phpstan/phpstan-phpunit",
@@ -1989,16 +1990,16 @@
         },
         {
             "name": "phpunit/php-code-coverage",
-            "version": "9.2.16",
+            "version": "9.2.17",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/php-code-coverage.git",
-                "reference": "2593003befdcc10db5e213f9f28814f5aa8ac073"
+                "reference": "aa94dc41e8661fe90c7316849907cba3007b10d8"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/php-code-coverage/zipball/2593003befdcc10db5e213f9f28814f5aa8ac073",
-                "reference": "2593003befdcc10db5e213f9f28814f5aa8ac073",
+                "url": "https://api.github.com/repos/sebastianbergmann/php-code-coverage/zipball/aa94dc41e8661fe90c7316849907cba3007b10d8",
+                "reference": "aa94dc41e8661fe90c7316849907cba3007b10d8",
                 "shasum": ""
             },
             "require": {
@@ -2054,7 +2055,7 @@
             ],
             "support": {
                 "issues": "https://github.com/sebastianbergmann/php-code-coverage/issues",
-                "source": "https://github.com/sebastianbergmann/php-code-coverage/tree/9.2.16"
+                "source": "https://github.com/sebastianbergmann/php-code-coverage/tree/9.2.17"
             },
             "funding": [
                 {
@@ -2062,7 +2063,7 @@
                     "type": "github"
                 }
             ],
-            "time": "2022-08-20T05:26:47+00:00"
+            "time": "2022-08-30T12:24:04+00:00"
         },
         {
             "name": "phpunit/php-file-iterator",
@@ -2307,16 +2308,16 @@
         },
         {
             "name": "phpunit/phpunit",
-            "version": "9.5.23",
+            "version": "9.5.24",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/phpunit.git",
-                "reference": "888556852e7e9bbeeedb9656afe46118765ade34"
+                "reference": "d0aa6097bef9fd42458a9b3c49da32c6ce6129c5"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/phpunit/zipball/888556852e7e9bbeeedb9656afe46118765ade34",
-                "reference": "888556852e7e9bbeeedb9656afe46118765ade34",
+                "url": "https://api.github.com/repos/sebastianbergmann/phpunit/zipball/d0aa6097bef9fd42458a9b3c49da32c6ce6129c5",
+                "reference": "d0aa6097bef9fd42458a9b3c49da32c6ce6129c5",
                 "shasum": ""
             },
             "require": {
@@ -2345,7 +2346,7 @@
                 "sebastian/global-state": "^5.0.1",
                 "sebastian/object-enumerator": "^4.0.3",
                 "sebastian/resource-operations": "^3.0.3",
-                "sebastian/type": "^3.0",
+                "sebastian/type": "^3.1",
                 "sebastian/version": "^3.0.2"
             },
             "suggest": {
@@ -2389,7 +2390,7 @@
             ],
             "support": {
                 "issues": "https://github.com/sebastianbergmann/phpunit/issues",
-                "source": "https://github.com/sebastianbergmann/phpunit/tree/9.5.23"
+                "source": "https://github.com/sebastianbergmann/phpunit/tree/9.5.24"
             },
             "funding": [
                 {
@@ -2401,7 +2402,7 @@
                     "type": "github"
                 }
             ],
-            "time": "2022-08-22T14:01:36+00:00"
+            "time": "2022-08-30T07:42:16+00:00"
         },
         {
             "name": "psr/container",
@@ -2508,28 +2509,28 @@
         },
         {
             "name": "roave/infection-static-analysis-plugin",
-            "version": "1.21.0",
+            "version": "1.23.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/Roave/infection-static-analysis-plugin.git",
-                "reference": "7d7587684cc5e2425d9ae52e8ab7358936373c0e"
+                "reference": "7f189bfdd28e4fcbd79f219232a1f2a1d748994d"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/Roave/infection-static-analysis-plugin/zipball/7d7587684cc5e2425d9ae52e8ab7358936373c0e",
-                "reference": "7d7587684cc5e2425d9ae52e8ab7358936373c0e",
+                "url": "https://api.github.com/repos/Roave/infection-static-analysis-plugin/zipball/7f189bfdd28e4fcbd79f219232a1f2a1d748994d",
+                "reference": "7f189bfdd28e4fcbd79f219232a1f2a1d748994d",
                 "shasum": ""
             },
             "require": {
-                "infection/infection": "0.26.13",
+                "infection/infection": "0.26.14",
                 "ocramius/package-versions": "^1.9.0 || ^2.0.0",
-                "php": "~8.0.0|~8.1.0",
+                "php": "~8.0.0|~8.1.0|~8.2.0",
                 "sanmai/later": "^0.1.2",
-                "vimeo/psalm": "^4.24.0"
+                "vimeo/psalm": "^4.27.0"
             },
             "require-dev": {
-                "doctrine/coding-standard": "^9.0.0",
-                "phpunit/phpunit": "^9.5.21"
+                "doctrine/coding-standard": "^10.0.0",
+                "phpunit/phpunit": "^9.5.24"
             },
             "bin": [
                 "bin/roave-infection-static-analysis-plugin"
@@ -2553,9 +2554,9 @@
             "description": "Static analysis on top of mutation testing - prevents escaped mutants from being invalid according to static analysis",
             "support": {
                 "issues": "https://github.com/Roave/infection-static-analysis-plugin/issues",
-                "source": "https://github.com/Roave/infection-static-analysis-plugin/tree/1.21.0"
+                "source": "https://github.com/Roave/infection-static-analysis-plugin/tree/1.23.0"
             },
-            "time": "2022-06-29T08:30:25+00:00"
+            "time": "2022-09-06T10:50:54+00:00"
         },
         {
             "name": "sanmai/later",
@@ -3537,16 +3538,16 @@
         },
         {
             "name": "sebastian/type",
-            "version": "3.0.0",
+            "version": "3.1.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/type.git",
-                "reference": "b233b84bc4465aff7b57cf1c4bc75c86d00d6dad"
+                "reference": "fb44e1cc6e557418387ad815780360057e40753e"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/type/zipball/b233b84bc4465aff7b57cf1c4bc75c86d00d6dad",
-                "reference": "b233b84bc4465aff7b57cf1c4bc75c86d00d6dad",
+                "url": "https://api.github.com/repos/sebastianbergmann/type/zipball/fb44e1cc6e557418387ad815780360057e40753e",
+                "reference": "fb44e1cc6e557418387ad815780360057e40753e",
                 "shasum": ""
             },
             "require": {
@@ -3558,7 +3559,7 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "3.0-dev"
+                    "dev-master": "3.1-dev"
                 }
             },
             "autoload": {
@@ -3581,7 +3582,7 @@
             "homepage": "https://github.com/sebastianbergmann/type",
             "support": {
                 "issues": "https://github.com/sebastianbergmann/type/issues",
-                "source": "https://github.com/sebastianbergmann/type/tree/3.0.0"
+                "source": "https://github.com/sebastianbergmann/type/tree/3.1.0"
             },
             "funding": [
                 {
@@ -3589,7 +3590,7 @@
                     "type": "github"
                 }
             ],
-            "time": "2022-03-15T09:54:48+00:00"
+            "time": "2022-08-29T06:55:37+00:00"
         },
         {
             "name": "sebastian/version",
@@ -4687,16 +4688,16 @@
         },
         {
             "name": "thecodingmachine/safe",
-            "version": "v2.2.2",
+            "version": "v2.2.3",
             "source": {
                 "type": "git",
                 "url": "https://github.com/thecodingmachine/safe.git",
-                "reference": "440284f9592c9df402832452a6871a8b3c48d97e"
+                "reference": "e454a3142d2197694d1fda291a4462ccd3f66e12"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/thecodingmachine/safe/zipball/440284f9592c9df402832452a6871a8b3c48d97e",
-                "reference": "440284f9592c9df402832452a6871a8b3c48d97e",
+                "url": "https://api.github.com/repos/thecodingmachine/safe/zipball/e454a3142d2197694d1fda291a4462ccd3f66e12",
+                "reference": "e454a3142d2197694d1fda291a4462ccd3f66e12",
                 "shasum": ""
             },
             "require": {
@@ -4819,9 +4820,9 @@
             "description": "PHP core functions that throw exceptions instead of returning FALSE on error",
             "support": {
                 "issues": "https://github.com/thecodingmachine/safe/issues",
-                "source": "https://github.com/thecodingmachine/safe/tree/v2.2.2"
+                "source": "https://github.com/thecodingmachine/safe/tree/v2.2.3"
             },
-            "time": "2022-07-20T17:46:34+00:00"
+            "time": "2022-08-04T14:05:49+00:00"
         },
         {
             "name": "theseer/tokenizer",
@@ -4875,16 +4876,16 @@
         },
         {
             "name": "vimeo/psalm",
-            "version": "4.26.0",
+            "version": "4.27.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/vimeo/psalm.git",
-                "reference": "6998fabb2bf528b65777bf9941920888d23c03ac"
+                "reference": "faf106e717c37b8c81721845dba9de3d8deed8ff"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/vimeo/psalm/zipball/6998fabb2bf528b65777bf9941920888d23c03ac",
-                "reference": "6998fabb2bf528b65777bf9941920888d23c03ac",
+                "url": "https://api.github.com/repos/vimeo/psalm/zipball/faf106e717c37b8c81721845dba9de3d8deed8ff",
+                "reference": "faf106e717c37b8c81721845dba9de3d8deed8ff",
                 "shasum": ""
             },
             "require": {
@@ -4976,9 +4977,9 @@
             ],
             "support": {
                 "issues": "https://github.com/vimeo/psalm/issues",
-                "source": "https://github.com/vimeo/psalm/tree/4.26.0"
+                "source": "https://github.com/vimeo/psalm/tree/4.27.0"
             },
-            "time": "2022-07-31T13:10:26+00:00"
+            "time": "2022-08-31T13:47:09+00:00"
         },
         {
             "name": "webmozart/assert",
diff --git a/src/NodeCompiler/CompileNodeToValue.php b/src/NodeCompiler/CompileNodeToValue.php
index b5fa0070c..ed8744af7 100644
--- a/src/NodeCompiler/CompileNodeToValue.php
+++ b/src/NodeCompiler/CompileNodeToValue.php
@@ -8,6 +8,7 @@
 use PhpParser\Node;
 use Roave\BetterReflection\Reflection\ReflectionClass;
 use Roave\BetterReflection\Reflection\ReflectionClassConstant;
+use Roave\BetterReflection\Reflection\ReflectionEnum;
 use Roave\BetterReflection\Reflector\Exception\IdentifierNotFound;
 use Roave\BetterReflection\Util\FileHelper;
 
@@ -121,6 +122,13 @@ public function __invoke(Node $node, CompilerContext $context): CompiledValue
                 return constant($node->args[0]->value->value);
             }
 
+            if (
+                $node instanceof Node\Expr\PropertyFetch
+                && $node->var instanceof Node\Expr\ClassConstFetch
+            ) {
+                return $this->getEnumPropertyValue($node, $context);
+            }
+
             throw Exception\UnableToCompileNode::forUnRecognizedExpressionInContext($node, $context);
         });
 
@@ -130,6 +138,35 @@ public function __invoke(Node $node, CompilerContext $context): CompiledValue
         return new CompiledValue($value, $constantName);
     }
 
+    private function getEnumPropertyValue(Node\Expr\PropertyFetch $node, CompilerContext $context): mixed
+    {
+        assert($node->var instanceof Node\Expr\ClassConstFetch);
+        assert($node->var->class instanceof Node\Name);
+
+        $className = $this->resolveClassName($node->var->class->toString(), $context);
+        $class     = $context->getReflector()->reflectClass($className);
+
+        if (! $class instanceof ReflectionEnum) {
+            throw Exception\UnableToCompileNode::becauseOfInvalidEnumCasePropertyFetch($context, $class, $node);
+        }
+
+        assert($node->var->name instanceof Node\Identifier);
+
+        $case = $class->getCase($node->var->name->name);
+
+        if ($case === null) {
+            throw Exception\UnableToCompileNode::becauseOfInvalidEnumCasePropertyFetch($context, $class, $node);
+        }
+
+        assert($node->name instanceof Node\Identifier);
+
+        return match ($node->name->toString()) {
+            'value' => $case->getValue(),
+            'name' => $case->getName(),
+            default => throw Exception\UnableToCompileNode::becauseOfInvalidEnumCasePropertyFetch($context, $class, $node),
+        };
+    }
+
     private function resolveConstantName(Node\Expr\ConstFetch $constNode, CompilerContext $context): string
     {
         $constantName = $constNode->name->toString();
diff --git a/src/NodeCompiler/Exception/UnableToCompileNode.php b/src/NodeCompiler/Exception/UnableToCompileNode.php
index 2ba4680b7..0678682b9 100644
--- a/src/NodeCompiler/Exception/UnableToCompileNode.php
+++ b/src/NodeCompiler/Exception/UnableToCompileNode.php
@@ -69,6 +69,26 @@ public static function becauseOfNotFoundConstantReference(
         return $exception;
     }
 
+    public static function becauseOfInvalidEnumCasePropertyFetch(
+        CompilerContext $fetchContext,
+        ReflectionClass $targetClass,
+        Node\Expr\PropertyFetch $propertyFetch,
+    ): self {
+        assert($propertyFetch->var instanceof Node\Expr\ClassConstFetch);
+        assert($propertyFetch->var->name instanceof Node\Identifier);
+        assert($propertyFetch->name instanceof Node\Identifier);
+
+        return new self(sprintf(
+            'Could not get %s::%s->%s while trying to evaluate constant expression in %s in file %s (line %d)',
+            $targetClass->getName(),
+            $propertyFetch->var->name->name,
+            $propertyFetch->name->toString(),
+            self::compilerContextToContextDescription($fetchContext),
+            self::getFileName($fetchContext),
+            $propertyFetch->getLine(),
+        ));
+    }
+
     public static function becauseOfMissingFileName(
         CompilerContext $context,
         Node\Scalar\MagicConst\Dir|Node\Scalar\MagicConst\File $node,
diff --git a/src/Reflection/Adapter/ReflectionClass.php b/src/Reflection/Adapter/ReflectionClass.php
index 67c70025c..b3c8fef75 100644
--- a/src/Reflection/Adapter/ReflectionClass.php
+++ b/src/Reflection/Adapter/ReflectionClass.php
@@ -308,6 +308,11 @@ public function isFinal(): bool
         return $this->betterReflectionClass->isFinal();
     }
 
+    public function isReadOnly(): bool
+    {
+        return $this->betterReflectionClass->isReadOnly();
+    }
+
     public function getModifiers(): int
     {
         return $this->betterReflectionClass->getModifiers();
diff --git a/src/Reflection/Adapter/ReflectionEnum.php b/src/Reflection/Adapter/ReflectionEnum.php
index b345ca579..2b39ab142 100644
--- a/src/Reflection/Adapter/ReflectionEnum.php
+++ b/src/Reflection/Adapter/ReflectionEnum.php
@@ -295,6 +295,11 @@ public function isFinal(): bool
         return $this->betterReflectionEnum->isFinal();
     }
 
+    public function isReadOnly(): bool
+    {
+        return $this->betterReflectionEnum->isReadOnly();
+    }
+
     public function getModifiers(): int
     {
         return $this->betterReflectionEnum->getModifiers();
diff --git a/src/Reflection/Adapter/ReflectionNamedType.php b/src/Reflection/Adapter/ReflectionNamedType.php
index 06d0919be..ddd889bcc 100644
--- a/src/Reflection/Adapter/ReflectionNamedType.php
+++ b/src/Reflection/Adapter/ReflectionNamedType.php
@@ -23,8 +23,17 @@ public function getName(): string
 
     public function __toString(): string
     {
-        return ($this->allowsNull && strtolower($this->betterReflectionType->getName()) !== 'mixed' ? '?' : '')
-            . $this->betterReflectionType->__toString();
+        $type = strtolower($this->betterReflectionType->getName());
+
+        if (
+            ! $this->allowsNull
+            || $type === 'mixed'
+            || $type === 'null'
+        ) {
+            return $this->betterReflectionType->__toString();
+        }
+
+        return '?' . $this->betterReflectionType->__toString();
     }
 
     public function allowsNull(): bool
diff --git a/src/Reflection/Adapter/ReflectionObject.php b/src/Reflection/Adapter/ReflectionObject.php
index e1480e7f1..2ac261082 100644
--- a/src/Reflection/Adapter/ReflectionObject.php
+++ b/src/Reflection/Adapter/ReflectionObject.php
@@ -258,6 +258,11 @@ public function isFinal(): bool
         return $this->betterReflectionObject->isFinal();
     }
 
+    public function isReadOnly(): bool
+    {
+        return $this->betterReflectionObject->isReadOnly();
+    }
+
     public function getModifiers(): int
     {
         return $this->betterReflectionObject->getModifiers();
diff --git a/src/Reflection/ReflectionClass.php b/src/Reflection/ReflectionClass.php
index 68a4e58bf..0efc6c635 100644
--- a/src/Reflection/ReflectionClass.php
+++ b/src/Reflection/ReflectionClass.php
@@ -62,6 +62,14 @@
 
 class ReflectionClass implements Reflection
 {
+    /**
+     * We cannot use CoreReflectionClass::IS_READONLY because it does not exist in PHP < 8.2.
+     * Constant is public, so we can use it in tests.
+     *
+     * @internal
+     */
+    public const IS_READONLY = 65536;
+
     public const ANONYMOUS_CLASS_NAME_PREFIX        = 'class@anonymous';
     public const ANONYMOUS_CLASS_NAME_PREFIX_REGEXP = '~^(?:class|[\w\\\\]+)@anonymous~';
     private const ANONYMOUS_CLASS_NAME_SUFFIX       = '@anonymous';
@@ -1055,6 +1063,11 @@ public function isFinal(): bool
         return $this->node instanceof ClassNode && $this->node->isFinal();
     }
 
+    public function isReadOnly(): bool
+    {
+        return $this->node instanceof ClassNode && $this->node->isReadonly();
+    }
+
     /**
      * Get the core-reflection-compatible modifier values.
      */
@@ -1062,6 +1075,7 @@ public function getModifiers(): int
     {
         $val  = $this->isAbstract() ? CoreReflectionClass::IS_EXPLICIT_ABSTRACT : 0;
         $val += $this->isFinal() ? CoreReflectionClass::IS_FINAL : 0;
+        $val += $this->isReadOnly() ? self::IS_READONLY : 0;
 
         return $val;
     }
diff --git a/src/Reflection/ReflectionNamedType.php b/src/Reflection/ReflectionNamedType.php
index 285769fba..8d4ffd597 100644
--- a/src/Reflection/ReflectionNamedType.php
+++ b/src/Reflection/ReflectionNamedType.php
@@ -33,7 +33,7 @@ class ReflectionNamedType extends ReflectionType
         'null'     => null,
         'never'    => null,
         'false'    => null,
-        'true'    => null,
+        'true'     => null,
     ];
 
     private string $name;
@@ -107,7 +107,11 @@ public function getClass(): ReflectionClass
 
     public function allowsNull(): bool
     {
-        return strtolower($this->name) === 'mixed';
+        return match (strtolower($this->name)) {
+            'mixed' => true,
+            'null' => true,
+            default => false,
+        };
     }
 
     public function __toString(): string
diff --git a/src/Reflection/ReflectionObject.php b/src/Reflection/ReflectionObject.php
index a2e29d735..f604c726f 100644
--- a/src/Reflection/ReflectionObject.php
+++ b/src/Reflection/ReflectionObject.php
@@ -352,6 +352,11 @@ public function isFinal(): bool
         return $this->reflectionClass->isFinal();
     }
 
+    public function isReadOnly(): bool
+    {
+        return $this->reflectionClass->isReadOnly();
+    }
+
     public function getModifiers(): int
     {
         return $this->reflectionClass->getModifiers();
diff --git a/src/Reflection/ReflectionType.php b/src/Reflection/ReflectionType.php
index ca44a71e9..eb1d07f09 100644
--- a/src/Reflection/ReflectionType.php
+++ b/src/Reflection/ReflectionType.php
@@ -32,15 +32,19 @@ public static function createFromNode(
         }
 
         if ($type instanceof Identifier || $type instanceof Name) {
-            if ($allowsNull) {
-                return new ReflectionUnionType(
-                    $reflector,
-                    $owner,
-                    new UnionType([$type, new Identifier('null')]),
-                );
+            if (
+                $type->toLowerString() === 'null'
+                || $type->toLowerString() === 'mixed'
+                || ! $allowsNull
+            ) {
+                return new ReflectionNamedType($reflector, $owner, $type);
             }
 
-            return new ReflectionNamedType($reflector, $owner, $type);
+            return new ReflectionUnionType(
+                $reflector,
+                $owner,
+                new UnionType([$type, new Identifier('null')]),
+            );
         }
 
         if ($type instanceof IntersectionType) {
diff --git a/src/SourceLocator/SourceStubber/ReflectionSourceStubber.php b/src/SourceLocator/SourceStubber/ReflectionSourceStubber.php
index 10e3f209a..49954c2bd 100644
--- a/src/SourceLocator/SourceStubber/ReflectionSourceStubber.php
+++ b/src/SourceLocator/SourceStubber/ReflectionSourceStubber.php
@@ -599,7 +599,7 @@ private function formatType(CoreReflectionNamedType|CoreReflectionUnionType|Core
         $name     = $type->getName();
         $nameNode = $this->formatNamedType($type);
 
-        if (! $type->allowsNull() || $name === 'mixed') {
+        if (! $type->allowsNull() || $name === 'mixed' || $name === 'null') {
             return $nameNode;
         }
 
diff --git a/test/unit/Fixture/ExampleClass.php b/test/unit/Fixture/ExampleClass.php
index f2f831f59..fce5d620d 100644
--- a/test/unit/Fixture/ExampleClass.php
+++ b/test/unit/Fixture/ExampleClass.php
@@ -68,6 +68,10 @@ final class FinalClass
     {
     }
 
+    readonly class ReadOnlyClass
+    {
+    }
+
     trait ExampleTrait
     {
     }
diff --git a/test/unit/NodeCompiler/CompileNodeToValueTest.php b/test/unit/NodeCompiler/CompileNodeToValueTest.php
index 3443ba276..a7d347483 100644
--- a/test/unit/NodeCompiler/CompileNodeToValueTest.php
+++ b/test/unit/NodeCompiler/CompileNodeToValueTest.php
@@ -638,6 +638,106 @@ class Foo extends Baz {
         self::assertSame('parentConstant', $classInfo->getProperty('parentConstant')->getDefaultValue());
     }
 
+    /** @return list<array{0: string, 1: string|int}> */
+    public function enumCasePropertyProvider(): array
+    {
+        return [
+            ['name', 'ONE'],
+            ['value', 1],
+        ];
+    }
+
+    /** @dataProvider enumCasePropertyProvider */
+    public function testEnumPropertyValue(string $propertyName, string|int $expectedPropertyValue): void
+    {
+        $phpCode = sprintf(
+            <<<'PHP'
+            <?php
+
+            enum Foo: int {
+                case ONE = 1;
+            }
+            class Bat {
+                const ONE_VALUE = Foo::ONE->%s;
+            }
+            PHP,
+            $propertyName,
+        );
+
+        $reflector = new DefaultReflector(new AggregateSourceLocator([
+            new StringSourceLocator($phpCode, $this->astLocator),
+            new PhpInternalSourceLocator($this->astLocator, $this->sourceStubber),
+        ]));
+        $classInfo = $reflector->reflectClass('Bat');
+        self::assertSame($expectedPropertyValue, $classInfo->getConstant('ONE_VALUE'));
+    }
+
+    public function testEnumPropertyValueThrowsExceptionWhenNoEnum(): void
+    {
+        $phpCode = <<<'PHP'
+        <?php
+
+        class Foo {
+            const ONE = 1;
+        }
+        class Bat {
+            const ONE_VALUE = Foo::ONE->value;
+        }
+        PHP;
+
+        $reflector = new DefaultReflector(new StringSourceLocator($phpCode, $this->astLocator));
+        $classInfo = $reflector->reflectClass('Bat');
+
+        self::expectException(UnableToCompileNode::class);
+        $classInfo->getConstant('ONE_VALUE');
+    }
+
+    public function testEnumPropertyValueThrowsExceptionWhenCaseDoesNotExist(): void
+    {
+        $phpCode = <<<'PHP'
+        <?php
+
+        enum Foo: int {
+            case ONE = 1;
+        }
+        class Bat {
+            const TWO_VALUE = Foo::TWO->value;
+        }
+        PHP;
+
+        $reflector = new DefaultReflector(new AggregateSourceLocator([
+            new StringSourceLocator($phpCode, $this->astLocator),
+            new PhpInternalSourceLocator($this->astLocator, $this->sourceStubber),
+        ]));
+        $classInfo = $reflector->reflectClass('Bat');
+
+        self::expectException(UnableToCompileNode::class);
+        $classInfo->getConstant('TWO_VALUE');
+    }
+
+    public function testEnumPropertyValueThrowsExceptionWhenPropertyDoesNotExist(): void
+    {
+        $phpCode = <<<'PHP'
+        <?php
+
+        enum Foo: int {
+            case ONE = 1;
+        }
+        class Bat {
+            const ONE_VALUE = Foo::ONE->missing;
+        }
+        PHP;
+
+        $reflector = new DefaultReflector(new AggregateSourceLocator([
+            new StringSourceLocator($phpCode, $this->astLocator),
+            new PhpInternalSourceLocator($this->astLocator, $this->sourceStubber),
+        ]));
+        $classInfo = $reflector->reflectClass('Bat');
+
+        self::expectException(UnableToCompileNode::class);
+        $classInfo->getConstant('ONE_VALUE');
+    }
+
     /** @return list<array{0: string, 1: mixed}> */
     public function magicConstantsWithoutNamespaceProvider(): array
     {
diff --git a/test/unit/NodeCompiler/Exception/UnableToCompileNodeTest.php b/test/unit/NodeCompiler/Exception/UnableToCompileNodeTest.php
index 3c95f7f75..22d64d322 100644
--- a/test/unit/NodeCompiler/Exception/UnableToCompileNodeTest.php
+++ b/test/unit/NodeCompiler/Exception/UnableToCompileNodeTest.php
@@ -7,6 +7,7 @@
 use PhpParser\Node\Expr\ClassConstFetch;
 use PhpParser\Node\Expr\ConstFetch;
 use PhpParser\Node\Expr\New_;
+use PhpParser\Node\Expr\PropertyFetch;
 use PhpParser\Node\Expr\Yield_;
 use PhpParser\Node\Identifier;
 use PhpParser\Node\Name;
@@ -100,6 +101,35 @@ public function testBecauseOfNotFoundClassConstantReference(CompilerContext $con
         );
     }
 
+    /** @dataProvider supportedContextTypes */
+    public function testBecauseOfOfInvalidEnumCasePropertyFetch(CompilerContext $context, string $contextName): void
+    {
+        $targetClass = $this->createMock(ReflectionClass::class);
+
+        $targetClass
+            ->expects(self::any())
+            ->method('getName')
+            ->willReturn('An\\Example');
+
+        self::assertSame(
+            sprintf(
+                'Could not get An\Example::SOME_CONSTANT->value while trying to evaluate constant expression in %s in file "" (line -1)',
+                $contextName,
+            ),
+            UnableToCompileNode::becauseOfInvalidEnumCasePropertyFetch(
+                $context,
+                $targetClass,
+                new PropertyFetch(
+                    new ClassConstFetch(
+                        new Name\FullyQualified('A'),
+                        new Identifier('SOME_CONSTANT'),
+                    ),
+                    'value',
+                ),
+            )->getMessage(),
+        );
+    }
+
     /** @dataProvider supportedContextTypes */
     public function testForUnRecognizedExpressionInContext(CompilerContext $context, string $contextName): void
     {
diff --git a/test/unit/Reflection/Adapter/ReflectionClassTest.php b/test/unit/Reflection/Adapter/ReflectionClassTest.php
index 036431fc6..5a756a733 100644
--- a/test/unit/Reflection/Adapter/ReflectionClassTest.php
+++ b/test/unit/Reflection/Adapter/ReflectionClassTest.php
@@ -98,6 +98,7 @@ public function methodExpectationProvider(): array
             ['isTrait', [], true, null, true, null],
             ['isAbstract', [], true, null, true, null],
             ['isFinal', [], true, null, true, null],
+            ['isReadOnly', [], true, null, true, null],
             ['getModifiers', [], 123, null, 123, null],
             ['isInstance', [new stdClass()], true, null, true, null],
             ['newInstance', [], null, NotImplemented::class, null, null],
diff --git a/test/unit/Reflection/Adapter/ReflectionEnumTest.php b/test/unit/Reflection/Adapter/ReflectionEnumTest.php
index 47d86844a..f53173599 100644
--- a/test/unit/Reflection/Adapter/ReflectionEnumTest.php
+++ b/test/unit/Reflection/Adapter/ReflectionEnumTest.php
@@ -105,6 +105,7 @@ public function methodExpectationProvider(): array
             ['isTrait', [], true, null, true, null],
             ['isAbstract', [], true, null, true, null],
             ['isFinal', [], true, null, true, null],
+            ['isReadOnly', [], true, null, true, null],
             ['getModifiers', [], 123, null, 123, null],
             ['isInstance', [new stdClass()], true, null, true, null],
             ['newInstance', [], null, NotImplemented::class, null, null],
diff --git a/test/unit/Reflection/Adapter/ReflectionNamedTypeTest.php b/test/unit/Reflection/Adapter/ReflectionNamedTypeTest.php
index 82e7dbdb2..30f7640de 100644
--- a/test/unit/Reflection/Adapter/ReflectionNamedTypeTest.php
+++ b/test/unit/Reflection/Adapter/ReflectionNamedTypeTest.php
@@ -53,6 +53,8 @@ public function dataNoNullabilityMarkerForMixed(): array
         return [
             ['mixed'],
             ['MiXeD'],
+            ['null'],
+            ['nULl'],
         ];
     }
 
diff --git a/test/unit/Reflection/Adapter/ReflectionObjectTest.php b/test/unit/Reflection/Adapter/ReflectionObjectTest.php
index 4610f32ca..4db0ccfce 100644
--- a/test/unit/Reflection/Adapter/ReflectionObjectTest.php
+++ b/test/unit/Reflection/Adapter/ReflectionObjectTest.php
@@ -97,6 +97,7 @@ public function methodExpectationProvider(): array
             ['isTrait', [], true, null, true, null],
             ['isAbstract', [], true, null, true, null],
             ['isFinal', [], true, null, true, null],
+            ['isReadOnly', [], true, null, true, null],
             ['getModifiers', [], 123, null, 123, null],
             ['isInstance', [new stdClass()], true, null, true, null],
             ['newInstance', [], null, NotImplemented::class, null, null],
diff --git a/test/unit/Reflection/ReflectionClassTest.php b/test/unit/Reflection/ReflectionClassTest.php
index de3ae9cbe..45c902dd4 100644
--- a/test/unit/Reflection/ReflectionClassTest.php
+++ b/test/unit/Reflection/ReflectionClassTest.php
@@ -16,7 +16,6 @@
 use PhpParser\Node\Stmt\Class_;
 use PHPUnit\Framework\TestCase;
 use Qux;
-use Reflection as CoreReflection;
 use ReflectionClass as CoreReflectionClass;
 use ReflectionMethod as CoreReflectionMethod;
 use ReflectionProperty as CoreReflectionProperty;
@@ -74,6 +73,7 @@
 use Roave\BetterReflectionTest\Fixture\InvalidInheritances;
 use Roave\BetterReflectionTest\Fixture\MethodsOrder;
 use Roave\BetterReflectionTest\Fixture\PureEnum;
+use Roave\BetterReflectionTest\Fixture\ReadOnlyClass;
 use Roave\BetterReflectionTest\Fixture\StaticProperties;
 use Roave\BetterReflectionTest\Fixture\StaticPropertyGetSet;
 use Roave\BetterReflectionTest\Fixture\StringEnum;
@@ -1130,22 +1130,33 @@ public function testIsFinalForEnum(): void
         self::assertTrue($classInfo->isFinal());
     }
 
-    /** @return list<array{0: string, 1: int, 2: list<string>}> */
+    public function testIsReadOnly(): void
+    {
+        $reflector = new DefaultReflector(new SingleFileSourceLocator(
+            __DIR__ . '/../Fixture/ExampleClass.php',
+            $this->astLocator,
+        ));
+
+        $classInfo = $reflector->reflectClass(ReadOnlyClass::class);
+        self::assertTrue($classInfo->isReadOnly());
+
+        $classInfo = $reflector->reflectClass(ExampleClass::class);
+        self::assertFalse($classInfo->isReadOnly());
+    }
+
+    /** @return list<array{0: string, 1: int}> */
     public function modifierProvider(): array
     {
         return [
-            ['ExampleClass', 0, []],
-            ['AbstractClass', CoreReflectionClass::IS_EXPLICIT_ABSTRACT, ['abstract']],
-            ['FinalClass', CoreReflectionClass::IS_FINAL, ['final']],
+            ['ExampleClass', 0],
+            ['AbstractClass', CoreReflectionClass::IS_EXPLICIT_ABSTRACT],
+            ['FinalClass', CoreReflectionClass::IS_FINAL],
+            ['ReadOnlyClass', ReflectionClass::IS_READONLY],
         ];
     }
 
-    /**
-     * @param list<string> $expectedModifierNames
-     *
-     * @dataProvider modifierProvider
-     */
-    public function testGetModifiers(string $className, int $expectedModifier, array $expectedModifierNames): void
+    /** @dataProvider modifierProvider */
+    public function testGetModifiers(string $className, int $expectedModifier): void
     {
         $reflector = new DefaultReflector(new SingleFileSourceLocator(
             __DIR__ . '/../Fixture/ExampleClass.php',
@@ -1155,10 +1166,6 @@ public function testGetModifiers(string $className, int $expectedModifier, array
         $classInfo = $reflector->reflectClass('\Roave\BetterReflectionTest\Fixture\\' . $className);
 
         self::assertSame($expectedModifier, $classInfo->getModifiers());
-        self::assertSame(
-            $expectedModifierNames,
-            CoreReflection::getModifierNames($classInfo->getModifiers()),
-        );
     }
 
     public function testIsTrait(): void
diff --git a/test/unit/Reflection/ReflectionNamedTypeTest.php b/test/unit/Reflection/ReflectionNamedTypeTest.php
index 5a44ca839..3ea2f2f1f 100644
--- a/test/unit/Reflection/ReflectionNamedTypeTest.php
+++ b/test/unit/Reflection/ReflectionNamedTypeTest.php
@@ -51,15 +51,17 @@ public function testAllowsNull(): void
     }
 
     /** @return list<array{0: string}> */
-    public function dataMixedAllowsNull(): array
+    public function dataAllowsNull(): array
     {
         return [
             ['mixed'],
             ['MIXED'],
+            ['null'],
+            ['NuLl'],
         ];
     }
 
-    /** @dataProvider dataMixedAllowsNull */
+    /** @dataProvider dataAllowsNull */
     public function testMixedAllowsNull(string $mixedType): void
     {
         $noNullType = $this->createType($mixedType);
@@ -86,6 +88,8 @@ public function isBuildinProvider(): Generator
         yield ['FALSE'];
         yield ['true'];
         yield ['TRUE'];
+        yield ['null'];
+        yield ['NULL'];
     }
 
     /** @dataProvider isBuildinProvider */
diff --git a/test/unit/Reflection/ReflectionTypeTest.php b/test/unit/Reflection/ReflectionTypeTest.php
index 89e7ddcad..e1b740af0 100644
--- a/test/unit/Reflection/ReflectionTypeTest.php
+++ b/test/unit/Reflection/ReflectionTypeTest.php
@@ -68,6 +68,10 @@ public function dataProvider(): array
                 'A|B|null',
                 true,
             ],
+            [new Node\Name('null'), false, ReflectionNamedType::class, 'null', true],
+            [new Node\Name('null'), true, ReflectionNamedType::class, 'null', true],
+            [new Node\Name('mixed'), false, ReflectionNamedType::class, 'mixed', true],
+            [new Node\Name('mixed'), true, ReflectionNamedType::class, 'mixed', true],
         ];
     }
 
diff --git a/test/unit/Reflection/StringCast/ReflectionTypeStringCastTest.php b/test/unit/Reflection/StringCast/ReflectionTypeStringCastTest.php
index e552d3979..0c7ccb2f4 100644
--- a/test/unit/Reflection/StringCast/ReflectionTypeStringCastTest.php
+++ b/test/unit/Reflection/StringCast/ReflectionTypeStringCastTest.php
@@ -34,6 +34,7 @@ function d(): A&B {}
 function e(): int {}
 function f(): null|int {}
 function g(): string|null|int {}
+function h(): null {}
 PHP
             ,
             BetterReflectionSingleton::instance()
@@ -57,6 +58,7 @@ function g(): string|null|int {}
             [$returnTypeForFunction('e'), 'int'],
             [$returnTypeForFunction('f'), '?int'],
             [$returnTypeForFunction('g'), 'string|null|int'],
+            [$returnTypeForFunction('h'), 'null'],
         ];
     }
 
diff --git a/test/unit/Reflector/DefaultReflectorTest.php b/test/unit/Reflector/DefaultReflectorTest.php
index 3b72045af..91cd3aa60 100644
--- a/test/unit/Reflector/DefaultReflectorTest.php
+++ b/test/unit/Reflector/DefaultReflectorTest.php
@@ -60,7 +60,7 @@ public function testReflectAllClasses(): void
         ))->reflectAllClasses();
 
         self::assertContainsOnlyInstancesOf(ReflectionClass::class, $classes);
-        self::assertCount(10, $classes);
+        self::assertCount(11, $classes);
     }
 
     public function testReflectFunction(): void