Add Extends tags

src/DocBlock/Tags/Extends_.php

@@ -0,0 +1,47 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * This file is part of phpDocumentor.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ *
+ * @link http://phpdoc.org
+ */
+
+namespace phpDocumentor\Reflection\DocBlock\Tags;
+
+use Doctrine\Deprecations\Deprecation;
+use phpDocumentor\Reflection\Type;
+use phpDocumentor\Reflection\DocBlock\Description;
+use phpDocumentor\Reflection\DocBlock\Tags\TagWithType;
+
+/**
+ * Reflection class for a {@}extends tag in a Docblock.
+ */
+class Extends_ extends TagWithType 
+{
+    public function __construct(Type $type, ?Description $description = null)
+    {
+        $this->name        = 'extends';
+        $this->type        = $type;
+        $this->description = $description;
+    }
+
+    /**
+     * @deprecated Create using static factory is deprecated,
+     *  this method should not be called directly by library consumers
+     */
+    public static function create(string $body)
+    {
+        Deprecation::trigger(
+            'phpdocumentor/reflection-docblock',
+            'https://github.com/phpDocumentor/ReflectionDocBlock/issues/361',
+            'Create using static factory is deprecated, this method should not be called directly
+             by library consumers',
+        );
+        return null;
+    }
+}

src/DocBlock/Tags/Factory/ExtendsFactory.php

@@ -0,0 +1,53 @@
+<?php
+
+declare(strict_types=1);
+
+namespace phpDocumentor\Reflection\DocBlock\Tags\Factory;
+
+use Webmozart\Assert\Assert;
+use phpDocumentor\Reflection\DocBlock\Tag;
+use phpDocumentor\Reflection\TypeResolver;
+use phpDocumentor\Reflection\Types\Context;
+use PHPStan\PhpDocParser\Ast\PhpDoc\PhpDocTagNode;
+use phpDocumentor\Reflection\DocBlock\Tags\Extends_;
+use PHPStan\PhpDocParser\Ast\PhpDoc\ExtendsTagValueNode;
+use phpDocumentor\Reflection\DocBlock\DescriptionFactory;
+use phpDocumentor\Reflection\DocBlock\Tags\TemplateExtends;
+
+/**
+ * @internal This class is not part of the BC promise of this library.
+ */
+class ExtendsFactory implements PHPStanFactory
+{
+    private DescriptionFactory $descriptionFactory;
+    private TypeResolver $typeResolver;
+
+    public function __construct(TypeResolver $typeResolver, DescriptionFactory $descriptionFactory)
+    {
+        $this->descriptionFactory = $descriptionFactory;
+        $this->typeResolver = $typeResolver;
+    }
+
+    public function create(PhpDocTagNode $node, Context $context): Tag
+    {
+        $tagValue = $node->value;
+        Assert::isInstanceOf($tagValue, ExtendsTagValueNode::class);
+
+        $description = $tagValue->getAttribute('description');
+        if (is_string($description) === false) {
+            $description = $tagValue->description;
+        }
+
+        $class = $node->name === '@extends' ? Extends_::class : TemplateExtends::class;
+
+        return new $class(
+            $this->typeResolver->createType($tagValue->type, $context),
+            $this->descriptionFactory->create($tagValue->description, $context) 
+        );
+    }
+
+    public function supports(PhpDocTagNode $node, Context $context): bool
+    {
+        return $node->value instanceof ExtendsTagValueNode && ($node->name === '@extends' || $node->name === '@template-extends');
+    }
+}

src/DocBlock/Tags/TemplateExtends.php

@@ -0,0 +1,29 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * This file is part of phpDocumentor.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ *
+ * @link http://phpdoc.org
+ */
+
+namespace phpDocumentor\Reflection\DocBlock\Tags;
+
+use phpDocumentor\Reflection\Type;
+use phpDocumentor\Reflection\DocBlock\Description;
+
+/**
+ * Reflection class for a {@}template-extends tag in a Docblock.
+ */
+final class TemplateExtends extends Extends_ 
+{
+    public function __construct(Type $type, ?Description $description = null)
+    {
+        parent::__construct($type, $description);
+        $this->name = 'template-extends';
+    }
+}