Add Immutable attribute

composer.json

@@ -25,7 +25,7 @@
     "require": {
         "php": ">=8.0",
         "nikic/php-parser": "^4 || ^5",
-        "php-static-analysis/attributes": "^0.1.16 || dev-main"
+        "php-static-analysis/attributes": "^0.1.17 || dev-main"
     },
     "require-dev": {
         "php-static-analysis/phpstan-extension": "dev-main",

src/AttributeNodeVisitor.php

@@ -12,6 +12,7 @@
 use PhpParser\Node\Stmt;
 use PhpParser\NodeVisitorAbstract;
 use PhpStaticAnalysis\Attributes\Deprecated;
+use PhpStaticAnalysis\Attributes\Immutable;
 use PhpStaticAnalysis\Attributes\Impure;
 use PhpStaticAnalysis\Attributes\Internal;
 use PhpStaticAnalysis\Attributes\IsReadOnly;
@@ -65,6 +66,7 @@ class AttributeNodeVisitor extends NodeVisitorAbstract
     private const ALLOWED_ATTRIBUTES_PER_NODE_TYPE = [
         Stmt\Class_::class => [
             Deprecated::class,
+            Immutable::class,
             Internal::class,
             Method::class,
             Mixin::class,
@@ -110,6 +112,7 @@ class AttributeNodeVisitor extends NodeVisitorAbstract
         ],
         Stmt\Interface_::class => [
             Deprecated::class,
+            Immutable::class,
             Internal::class,
             Method::class,
             Mixin::class,
@@ -129,6 +132,7 @@ class AttributeNodeVisitor extends NodeVisitorAbstract
         ],
         Stmt\Trait_::class => [
             Deprecated::class,
+            Immutable::class,
             Internal::class,
             Method::class,
             Mixin::class,
@@ -145,6 +149,7 @@ class AttributeNodeVisitor extends NodeVisitorAbstract
 
     private const SHORT_NAME_TO_FQN = [
         'Deprecated' => Deprecated::class,
+        'Immutable' => Immutable::class,
         'Impure' => Impure::class,
         'Internal' => Internal::class,
         'IsReadOnly' => IsReadOnly::class,
@@ -174,6 +179,9 @@ class AttributeNodeVisitor extends NodeVisitorAbstract
         Deprecated::class => [
             'all' => 'deprecated',
         ],
+        Immutable::class => [
+            'all' => 'immutable',
+        ],
         Impure::class => [
             'all' => 'impure',
         ],
@@ -253,6 +261,9 @@ class AttributeNodeVisitor extends NodeVisitorAbstract
         Deprecated::class => [
             'all' => self::ARGS_NONE,
         ],
+        Immutable::class => [
+            'all' => self::ARGS_NONE_WITH_PREFIX,
+        ],
         Impure::class => [
             'all' => self::ARGS_NONE_WITH_PREFIX,
         ],

tests/ImmutableAttributeNodeVisitorTest.php

@@ -0,0 +1,28 @@
+<?php
+
+
+use PhpParser\Node;
+use PhpParser\Node\Attribute;
+use PhpParser\Node\AttributeGroup;
+use PhpParser\Node\Name\FullyQualified;
+use PhpStaticAnalysis\Attributes\Immutable;
+use test\PhpStaticAnalysis\NodeVisitor\AttributeNodeVisitorTestBase;
+
+class ImmutableAttributeNodeVisitorTest extends AttributeNodeVisitorTestBase
+{
+    public function testAddsImmutablePHPDoc(): void
+    {
+        $node = new Node\Stmt\Class_('Test');
+        $this->addImmutableAttributeToNode($node);
+        $this->nodeVisitor->enterNode($node);
+        $docText = $this->getDocText($node);
+        $this->assertEquals("/**\n * @immutable\n */", $docText);
+    }
+
+    private function addImmutableAttributeToNode(Node\Stmt\Class_ $node): void
+    {
+        $attributeName = new FullyQualified(Immutable::class);
+        $attribute = new Attribute($attributeName);
+        $node->attrGroups = [new AttributeGroup([$attribute])];
+    }
+}