Initial Drupal 11 with DDEV setup

web/core/lib/Drupal/Component/Annotation/AnnotationBase.php

@@ -0,0 +1,66 @@
+<?php
+
+namespace Drupal\Component\Annotation;
+
+/**
+ * Provides a base class for classed annotations.
+ */
+abstract class AnnotationBase implements AnnotationInterface {
+
+  /**
+   * The annotated class ID.
+   *
+   * @var string
+   */
+  public $id;
+
+  /**
+   * The class used for this annotated class.
+   *
+   * @var string
+   */
+  protected $class;
+
+  /**
+   * The provider of the annotated class.
+   *
+   * @var string
+   */
+  protected $provider;
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getProvider() {
+    return $this->provider;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function setProvider($provider) {
+    $this->provider = $provider;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getId() {
+    return $this->id;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getClass() {
+    return $this->class;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function setClass($class) {
+    $this->class = $class;
+  }
+
+}

web/core/lib/Drupal/Component/Annotation/AnnotationInterface.php

@@ -0,0 +1,55 @@
+<?php
+
+namespace Drupal\Component\Annotation;
+
+/**
+ * Defines a common interface for classed annotations.
+ */
+interface AnnotationInterface {
+
+  /**
+   * Gets the value of an annotation.
+   */
+  public function get();
+
+  /**
+   * Gets the name of the provider of the annotated class.
+   *
+   * @return string
+   *   The provider of the annotated class.
+   */
+  public function getProvider();
+
+  /**
+   * Sets the name of the provider of the annotated class.
+   *
+   * @param string $provider
+   *   The provider of the annotated class.
+   */
+  public function setProvider($provider);
+
+  /**
+   * Gets the unique ID for this annotated class.
+   *
+   * @return string
+   *   The annotated class ID.
+   */
+  public function getId();
+
+  /**
+   * Gets the class of the annotated class.
+   *
+   * @return string
+   *   The class name of the annotated class.
+   */
+  public function getClass();
+
+  /**
+   * Sets the class of the annotated class.
+   *
+   * @param string $class
+   *   The class of the annotated class.
+   */
+  public function setClass($class);
+
+}

web/core/lib/Drupal/Component/Annotation/Doctrine/SimpleAnnotationReader.php

@@ -0,0 +1,161 @@
+<?php
+// phpcs:ignoreFile
+
+/**
+ * @file
+ *
+ * This class is a near-copy of
+ * Doctrine\Common\Annotations\SimpleAnnotationReader, which is part of the
+ * Doctrine project: <http://www.doctrine-project.org>. It was copied from
+ * version 1.2.7.
+ *
+ * Original copyright:
+ *
+ * Copyright (c) 2006-2013 Doctrine Project
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is furnished to do
+ * so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ */
+
+namespace Drupal\Component\Annotation\Doctrine;
+
+use Doctrine\Common\Annotations\Reader;
+
+/**
+ * Simple Annotation Reader.
+ *
+ * Drupal adds its own version of DocParser and allows for ignoring common
+ * annotations.
+ *
+ * @internal
+ */
+final class SimpleAnnotationReader implements Reader
+{
+
+    protected $ignoredAnnotations = [
+      'addtogroup' => TRUE,
+      'code' => TRUE,
+      'defgroup' => TRUE,
+      'deprecated' => TRUE,
+      'endcode' => TRUE,
+      'endlink' => TRUE,
+      'file' => TRUE,
+      'ingroup' => TRUE,
+      'group' => TRUE,
+      'link' => TRUE,
+      'mainpage' => TRUE,
+      'param' => TRUE,
+      'ref' => TRUE,
+      'return' => TRUE,
+      'section' => TRUE,
+      'see' => TRUE,
+      'subsection' => TRUE,
+      'throws' => TRUE,
+      'todo' => TRUE,
+      'var' => TRUE,
+      '{' => TRUE,
+      '}' => TRUE,
+    ];
+
+    /**
+     * @var DocParser
+     */
+    private $parser;
+
+    /**
+     * Constructor.
+     *
+     * Initializes a new SimpleAnnotationReader.
+     */
+    public function __construct()
+    {
+        $this->parser = new DocParser();
+        $this->parser->setIgnoreNotImportedAnnotations(true);
+        $this->parser->setIgnoredAnnotationNames($this->ignoredAnnotations);
+    }
+
+    /**
+     * Adds a namespace in which we will look for annotations.
+     *
+     * @param string $namespace
+     *
+     * @return void
+     */
+    public function addNamespace($namespace)
+    {
+        $this->parser->addNamespace($namespace);
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getClassAnnotations(\ReflectionClass $class)
+    {
+        return $this->parser->parse($class->getDocComment(), 'class '.$class->getName());
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getMethodAnnotations(\ReflectionMethod $method)
+    {
+        return $this->parser->parse($method->getDocComment(), 'method '.$method->getDeclaringClass()->name.'::'.$method->getName().'()');
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getPropertyAnnotations(\ReflectionProperty $property)
+    {
+        return $this->parser->parse($property->getDocComment(), 'property '.$property->getDeclaringClass()->name.'::$'.$property->getName());
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getClassAnnotation(\ReflectionClass $class, $annotationName)
+    {
+        foreach ($this->getClassAnnotations($class) as $annotation) {
+            if ($annotation instanceof $annotationName) {
+                return $annotation;
+            }
+        }
+
+        return null;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getMethodAnnotation(\ReflectionMethod $method, $annotationName)
+    {
+        foreach ($this->getMethodAnnotations($method) as $annotation) {
+            if ($annotation instanceof $annotationName) {
+                return $annotation;
+            }
+        }
+
+        return null;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getPropertyAnnotation(\ReflectionProperty $property, $annotationName)
+    {
+        foreach ($this->getPropertyAnnotations($property) as $annotation) {
+            if ($annotation instanceof $annotationName) {
+                return $annotation;
+            }
+        }
+
+        return null;
+    }
+}

web/core/lib/Drupal/Component/Annotation/Doctrine/StaticReflectionClass.php

@@ -0,0 +1,450 @@
+<?php
+// phpcs:ignoreFile
+
+/**
+ * @file
+ *
+ * This class is a near-copy of
+ * Doctrine\Common\Reflection\StaticReflectionClass, which is part of the
+ * Doctrine project: <http://www.doctrine-project.org>. It was copied from
+ * version 1.2.2.
+ *
+ * Original copyright:
+ *
+ * Copyright (c) 2006-2015 Doctrine Project
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is furnished to do
+ * so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ */
+
+namespace Drupal\Component\Annotation\Doctrine;
+
+use ReflectionClass;
+use ReflectionException;
+
+class StaticReflectionClass extends ReflectionClass
+{
+
+    /**
+     * The static reflection parser object.
+     *
+     * @var StaticReflectionParser
+     */
+    private $staticReflectionParser;
+
+    public function __construct(StaticReflectionParser $staticReflectionParser)
+    {
+        $this->staticReflectionParser = $staticReflectionParser;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getName(): string
+    {
+        return $this->staticReflectionParser->getClassName();
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getDocComment(): string|FALSE
+    {
+        return $this->staticReflectionParser->getDocComment();
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getNamespaceName(): string
+    {
+        return $this->staticReflectionParser->getNamespaceName();
+    }
+
+    /**
+     * @return string[]
+     */
+    public function getUseStatements()
+    {
+        return $this->staticReflectionParser->getUseStatements();
+    }
+
+    /**
+     * Determines if the class has the provided class attribute.
+     *
+     * @param string $attribute The attribute to check for.
+     *
+     * @return bool
+     */
+    public function hasClassAttribute(string $attribute)
+    {
+        return $this->staticReflectionParser->hasClassAttribute($attribute);
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getMethod($name): \ReflectionMethod
+    {
+        throw new ReflectionException('Method not implemented');
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getProperty($name): \ReflectionProperty
+    {
+        throw new ReflectionException('Method not implemented');
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public static function export($argument, $return = false)
+    {
+        throw new ReflectionException('Method not implemented');
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getConstant($name): mixed
+    {
+        throw new ReflectionException('Method not implemented');
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getConstructor(): ?\ReflectionMethod
+    {
+        throw new ReflectionException('Method not implemented');
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getDefaultProperties(): array
+    {
+        throw new ReflectionException('Method not implemented');
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getEndLine(): int|FALSE
+    {
+        throw new ReflectionException('Method not implemented');
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getExtension(): ?\ReflectionExtension
+    {
+        throw new ReflectionException('Method not implemented');
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getExtensionName(): string|FALSE
+    {
+        throw new ReflectionException('Method not implemented');
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getFileName(): string|FALSE
+    {
+        throw new ReflectionException('Method not implemented');
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getInterfaceNames(): array
+    {
+        throw new ReflectionException('Method not implemented');
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getInterfaces(): array
+    {
+        throw new ReflectionException('Method not implemented');
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getMethods($filter = null): array
+    {
+        throw new ReflectionException('Method not implemented');
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getModifiers(): int
+    {
+        throw new ReflectionException('Method not implemented');
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getParentClass(): \ReflectionClass|FALSE
+    {
+        throw new ReflectionException('Method not implemented');
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getProperties($filter = null): array
+    {
+        throw new ReflectionException('Method not implemented');
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getShortName(): string
+    {
+        throw new ReflectionException('Method not implemented');
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getStartLine(): int|FALSE
+    {
+        throw new ReflectionException('Method not implemented');
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getStaticProperties(): array
+    {
+        throw new ReflectionException('Method not implemented');
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getStaticPropertyValue($name, $default = ''): mixed
+    {
+        throw new ReflectionException('Method not implemented');
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getTraitAliases(): array
+    {
+        throw new ReflectionException('Method not implemented');
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getTraitNames(): array
+    {
+        throw new ReflectionException('Method not implemented');
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getTraits(): array
+    {
+        throw new ReflectionException('Method not implemented');
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function hasConstant($name): bool
+    {
+        throw new ReflectionException('Method not implemented');
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function hasMethod($name): bool
+    {
+        throw new ReflectionException('Method not implemented');
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function hasProperty($name): bool
+    {
+        throw new ReflectionException('Method not implemented');
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function implementsInterface($interface): bool
+    {
+        throw new ReflectionException('Method not implemented');
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function inNamespace(): bool
+    {
+        throw new ReflectionException('Method not implemented');
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function isAbstract(): bool
+    {
+        throw new ReflectionException('Method not implemented');
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function isCloneable(): bool
+    {
+        throw new ReflectionException('Method not implemented');
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function isFinal(): bool
+    {
+        throw new ReflectionException('Method not implemented');
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function isInstance($object): bool
+    {
+        throw new ReflectionException('Method not implemented');
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function isInstantiable(): bool
+    {
+        throw new ReflectionException('Method not implemented');
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function isInterface(): bool
+    {
+        throw new ReflectionException('Method not implemented');
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function isInternal(): bool
+    {
+        throw new ReflectionException('Method not implemented');
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function isIterateable(): bool
+    {
+        throw new ReflectionException('Method not implemented');
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function isSubclassOf($class): bool
+    {
+        throw new ReflectionException('Method not implemented');
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function isTrait(): bool
+    {
+        throw new ReflectionException('Method not implemented');
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function isUserDefined(): bool
+    {
+        throw new ReflectionException('Method not implemented');
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function newInstanceArgs(array $args = []): ?object
+    {
+        throw new ReflectionException('Method not implemented');
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function newInstanceWithoutConstructor(): object
+    {
+        throw new ReflectionException('Method not implemented');
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function setStaticPropertyValue($name, $value): void
+    {
+        throw new ReflectionException('Method not implemented');
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getConstants(?int $filter = null): array
+    {
+        throw new ReflectionException('Method not implemented');
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function newInstance(mixed ...$args): object
+    {
+        throw new ReflectionException('Method not implemented');
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function __toString()
+    {
+        throw new ReflectionException('Method not implemented');
+    }
+}

web/core/lib/Drupal/Component/Annotation/Doctrine/StaticReflectionParser.php

@@ -0,0 +1,415 @@
+<?php
+// phpcs:ignoreFile
+// cspell:ignore paamayim nekudotayim
+
+/**
+ * @file
+ *
+ * This class is a near-copy of
+ * Doctrine\Common\Reflection\StaticReflectionParser, which is part of the
+ * Doctrine project: <http://www.doctrine-project.org>. It was copied from
+ * version 1.2.2.
+ *
+ * Original copyright:
+ *
+ * Copyright (c) 2006-2015 Doctrine Project
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is furnished to do
+ * so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ */
+
+namespace Drupal\Component\Annotation\Doctrine;
+
+use Doctrine\Common\Annotations\TokenParser;
+use ReflectionException;
+use const T_CLASS;
+use const T_DOC_COMMENT;
+use const T_EXTENDS;
+use const T_FUNCTION;
+use const T_NEW;
+use const T_PAAMAYIM_NEKUDOTAYIM;
+use const T_PRIVATE;
+use const T_PROTECTED;
+use const T_PUBLIC;
+use const T_STRING;
+use const T_USE;
+use const T_VAR;
+use const T_VARIABLE;
+use function array_merge;
+use function file_get_contents;
+use function is_array;
+use function ltrim;
+use function preg_match;
+use function sprintf;
+use function strpos;
+use function strrpos;
+use function strtolower;
+use function substr;
+
+/**
+ * Parses a file for namespaces/use/class declarations.
+ */
+class StaticReflectionParser
+{
+    /**
+     * The fully qualified class name.
+     *
+     * @var string
+     */
+    protected $className;
+
+    /**
+     * The short class name.
+     *
+     * @var string
+     */
+    protected $shortClassName;
+
+    /**
+     * Whether the caller only wants class annotations.
+     *
+     * @var bool
+     */
+    protected $classAnnotationOptimize;
+
+    /**
+     * A ClassFinder object which finds the class.
+     *
+     * @var ClassFinderInterface
+     */
+    protected $finder;
+
+    /**
+     * Whether the parser has run.
+     *
+     * @var bool
+     */
+    protected $parsed = false;
+
+    /**
+     * The namespace of the class.
+     *
+     * @var string
+     */
+    protected $namespace = '';
+
+    /**
+     * The use statements of the class.
+     *
+     * @var string[]
+     */
+    protected $useStatements = [];
+
+    /**
+     * The docComment of the class.
+     *
+     * @var mixed[]
+     */
+    protected $docComment = [
+        'class' => '',
+        'property' => [],
+        'method' => [],
+    ];
+
+    /**
+     * The name of the class this class extends, if any.
+     *
+     * @var string
+     */
+    protected $parentClassName = '';
+
+    /**
+     * The parent PSR-0 Parser.
+     *
+     * @var \Doctrine\Common\Reflection\StaticReflectionParser
+     */
+    protected $parentStaticReflectionParser;
+
+    /**
+     * The class attributes.
+     *
+     * @var string[]
+     */
+    protected array $classAttributes = [];
+
+    /**
+     * Method attributes
+     *
+     * @var string[][]
+     */
+    protected array $methodAttributes = [];
+
+    /**
+     * Parses a class residing in a PSR-0 hierarchy.
+     *
+     * @param string               $className               The full, namespaced class name.
+     * @param ClassFinderInterface $finder                  A ClassFinder object which finds the class.
+     * @param bool                 $classAnnotationOptimize Only retrieve the class docComment.
+     *                                                         Presumes there is only one statement per line.
+     */
+    public function __construct($className, $finder, $classAnnotationOptimize = false)
+    {
+        $this->className = ltrim($className, '\\');
+        $lastNsPos       = strrpos($this->className, '\\');
+
+        if ($lastNsPos !== false) {
+            $this->namespace      = substr($this->className, 0, $lastNsPos);
+            $this->shortClassName = substr($this->className, $lastNsPos + 1);
+        } else {
+            $this->shortClassName = $this->className;
+        }
+
+        $this->finder                  = $finder;
+        $this->classAnnotationOptimize = $classAnnotationOptimize;
+    }
+
+    /**
+     * @return void
+     */
+    protected function parse()
+    {
+        $fileName = $this->finder->findFile($this->className);
+
+        if ($this->parsed || ! $fileName) {
+            return;
+        }
+        $this->parsed = true;
+        $contents     = file_get_contents($fileName);
+        if ($this->classAnnotationOptimize) {
+            $regex = sprintf('/\A.*^\s*((abstract|final)\s+)?class\s+%s\s+/sm', $this->shortClassName);
+
+            if (preg_match($regex, $contents, $matches)) {
+                $contents = $matches[0];
+            }
+        }
+        $tokenParser = new TokenParser($contents);
+        $docComment  = '';
+        $last_token  = false;
+        $attributeNames = [];
+
+        while ($token = $tokenParser->next(false)) {
+            switch ($token[0]) {
+                case T_USE:
+                    $this->useStatements = array_merge($this->useStatements, $tokenParser->parseUseStatement());
+                    break;
+                case T_DOC_COMMENT:
+                    $docComment = $token[1];
+                    break;
+                case T_ATTRIBUTE:
+                    while ($token = $tokenParser->next()) {
+                        if ($token[0] === T_NAME_FULLY_QUALIFIED || $token[0] === T_NAME_QUALIFIED || $token[0] === T_NAME_RELATIVE || $token[0] === T_STRING) {
+                            $attributeNames[] = $token[1];
+                            break 2;
+                        }
+                    }
+                    break;
+                case T_CLASS:
+                    // Convert the attributes to fully qualified names.
+                    $this->classAttributes = array_map([$this, 'fullySpecifyName'], $attributeNames);
+                    if ($last_token !== T_PAAMAYIM_NEKUDOTAYIM && $last_token !== T_NEW) {
+                        $this->docComment['class'] = $docComment;
+                        $docComment                = '';
+                        $attributeNames            = [];
+                    }
+                    break;
+                case T_VAR:
+                case T_PRIVATE:
+                case T_PROTECTED:
+                case T_PUBLIC:
+                    $token = $tokenParser->next();
+                    if ($token[0] === T_VARIABLE) {
+                        $propertyName                                = substr($token[1], 1);
+                        $this->docComment['property'][$propertyName] = $docComment;
+                        $attributeNames                              = [];
+                        continue 2;
+                    }
+                    if ($token[0] !== T_FUNCTION) {
+                        // For example, it can be T_FINAL.
+                        continue 2;
+                    }
+                    // No break.
+                case T_FUNCTION:
+                    // The next string after function is the name, but
+                    // there can be & before the function name so find the
+                    // string.
+                    while (($token = $tokenParser->next()) && $token[0] !== T_STRING) {
+                        continue;
+                    }
+                    if ($token === null) {
+                        break;
+                    }
+                    $methodName                              = $token[1];
+                    $this->docComment['method'][$methodName] = $docComment;
+                    $docComment                              = '';
+                    $this->methodAttributes[$methodName]     = array_map([$this, 'fullySpecifyName'], $attributeNames);
+                    $attributeNames                          = [];
+                    break;
+                case T_EXTENDS:
+                    $this->parentClassName = $this->fullySpecifyName($tokenParser->parseClass());
+                    break;
+            }
+
+            $last_token = is_array($token) ? $token[0] : false;
+        }
+    }
+
+    /**
+     * @return StaticReflectionParser
+     */
+    protected function getParentStaticReflectionParser()
+    {
+        if (empty($this->parentStaticReflectionParser)) {
+            $this->parentStaticReflectionParser = new static($this->parentClassName, $this->finder);
+        }
+
+        return $this->parentStaticReflectionParser;
+    }
+
+    /**
+     * @return string
+     */
+    public function getClassName()
+    {
+        return $this->className;
+    }
+
+    /**
+     * @return string
+     */
+    public function getNamespaceName()
+    {
+        return $this->namespace;
+    }
+
+    /**
+     * Gets the ReflectionClass equivalent for this class.
+     *
+     * @return ReflectionClass
+     */
+    public function getReflectionClass()
+    {
+        return new StaticReflectionClass($this);
+    }
+
+    /**
+     * Gets the use statements from this file.
+     *
+     * @return string[]
+     */
+    public function getUseStatements()
+    {
+        $this->parse();
+
+        return $this->useStatements;
+    }
+
+    /**
+     * Gets the doc comment.
+     *
+     * @param string $type The type: 'class', 'property' or 'method'.
+     * @param string $name The name of the property or method, not needed for 'class'.
+     *
+     * @return string The doc comment, empty string if none.
+     */
+    public function getDocComment($type = 'class', $name = '')
+    {
+        $this->parse();
+
+        return $name ? $this->docComment[$type][$name] : $this->docComment[$type];
+    }
+
+    public function getMethodAttributes(): array {
+      $this->parse();
+
+      return $this->methodAttributes;
+    }
+
+    /**
+     * Gets the PSR-0 parser for the declaring class.
+     *
+     * @param string $type The type: 'property' or 'method'.
+     * @param string $name The name of the property or method.
+     *
+     * @return StaticReflectionParser A static reflection parser for the declaring class.
+     *
+     * @throws ReflectionException
+     */
+    public function getStaticReflectionParserForDeclaringClass($type, $name)
+    {
+        $this->parse();
+        if (isset($this->docComment[$type][$name])) {
+            return $this;
+        }
+        if (! empty($this->parentClassName)) {
+            return $this->getParentStaticReflectionParser()->getStaticReflectionParserForDeclaringClass($type, $name);
+        }
+        throw new ReflectionException('Invalid ' . $type . ' "' . $name . '"');
+    }
+
+    /**
+     * Determines if the class has the provided class attribute.
+     *
+     * @param string $attribute The fully qualified attribute to check for.
+     *
+     * @return bool
+     */
+    public function hasClassAttribute(string $attribute): bool
+    {
+        $this->parse();
+        return static::hasAttribute($this->classAttributes, $attribute);
+    }
+
+    public static function hasAttribute(array $existingAttributes, string $attributeLookingFor): bool
+    {
+        foreach ($existingAttributes as $existingAttribute) {
+            if (is_a($existingAttribute, $attributeLookingFor, TRUE)) {
+                return TRUE;
+            }
+        }
+
+        return FALSE;
+    }
+
+    /**
+     * Converts a name into a fully specified name.
+     *
+     * @param string $name The name to convert.
+     *
+     * @return string
+     */
+    private function fullySpecifyName(string $name): string
+    {
+        $nsPos          = strpos($name, '\\');
+        $fullySpecified = false;
+        if ($nsPos === 0) {
+            $fullySpecified = true;
+        } else {
+            if ($nsPos) {
+                $prefix  = strtolower(substr($name, 0, $nsPos));
+                $postfix = substr($name, $nsPos);
+            } else {
+                $prefix  = strtolower($name);
+                $postfix = '';
+            }
+            foreach ($this->useStatements as $alias => $use) {
+                if ($alias !== $prefix) {
+                    continue;
+                }
+
+                $name = '\\' . $use . $postfix;
+                $fullySpecified        = true;
+            }
+        }
+        if (! $fullySpecified) {
+            $name = '\\' . $this->namespace . '\\' . $name;
+        }
+        return $name;
+    }
+}

web/core/lib/Drupal/Component/Annotation/LICENSE.txt

@@ -0,0 +1,339 @@
+        GNU GENERAL PUBLIC LICENSE
+           Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+          Preamble
+
+  The licenses for most software are designed to take away your
+freedom to share and change it.  By contrast, the GNU General Public
+License is intended to guarantee your freedom to share and change free
+software--to make sure the software is free for all its users.  This
+General Public License applies to most of the Free Software
+Foundation's software and to any other program whose authors commit to
+using it.  (Some other Free Software Foundation software is covered by
+the GNU Lesser General Public License instead.)  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+this service if you wish), that you receive source code or can get it
+if you want it, that you can change the software or use pieces of it
+in new free programs; and that you know you can do these things.
+
+  To protect your rights, we need to make restrictions that forbid
+anyone to deny you these rights or to ask you to surrender the rights.
+These restrictions translate to certain responsibilities for you if you
+distribute copies of the software, or if you modify it.
+
+  For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must give the recipients all the rights that
+you have.  You must make sure that they, too, receive or can get the
+source code.  And you must show them these terms so they know their
+rights.
+
+  We protect your rights with two steps: (1) copyright the software, and
+(2) offer you this license which gives you legal permission to copy,
+distribute and/or modify the software.
+
+  Also, for each author's protection and ours, we want to make certain
+that everyone understands that there is no warranty for this free
+software.  If the software is modified by someone else and passed on, we
+want its recipients to know that what they have is not the original, so
+that any problems introduced by others will not reflect on the original
+authors' reputations.
+
+  Finally, any free program is threatened constantly by software
+patents.  We wish to avoid the danger that redistributors of a free
+program will individually obtain patent licenses, in effect making the
+program proprietary.  To prevent this, we have made it clear that any
+patent must be licensed for everyone's free use or not licensed at all.
+
+  The precise terms and conditions for copying, distribution and
+modification follow.
+
+        GNU GENERAL PUBLIC LICENSE
+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+  0. This License applies to any program or other work which contains
+a notice placed by the copyright holder saying it may be distributed
+under the terms of this General Public License.  The "Program", below,
+refers to any such program or work, and a "work based on the Program"
+means either the Program or any derivative work under copyright law:
+that is to say, a work containing the Program or a portion of it,
+either verbatim or with modifications and/or translated into another
+language.  (Hereinafter, translation is included without limitation in
+the term "modification".)  Each licensee is addressed as "you".
+
+Activities other than copying, distribution and modification are not
+covered by this License; they are outside its scope.  The act of
+running the Program is not restricted, and the output from the Program
+is covered only if its contents constitute a work based on the
+Program (independent of having been made by running the Program).
+Whether that is true depends on what the Program does.
+
+  1. You may copy and distribute verbatim copies of the Program's
+source code as you receive it, in any medium, provided that you
+conspicuously and appropriately publish on each copy an appropriate
+copyright notice and disclaimer of warranty; keep intact all the
+notices that refer to this License and to the absence of any warranty;
+and give any other recipients of the Program a copy of this License
+along with the Program.
+
+You may charge a fee for the physical act of transferring a copy, and
+you may at your option offer warranty protection in exchange for a fee.
+
+  2. You may modify your copy or copies of the Program or any portion
+of it, thus forming a work based on the Program, and copy and
+distribute such modifications or work under the terms of Section 1
+above, provided that you also meet all of these conditions:
+
+    a) You must cause the modified files to carry prominent notices
+    stating that you changed the files and the date of any change.
+
+    b) You must cause any work that you distribute or publish, that in
+    whole or in part contains or is derived from the Program or any
+    part thereof, to be licensed as a whole at no charge to all third
+    parties under the terms of this License.
+
+    c) If the modified program normally reads commands interactively
+    when run, you must cause it, when started running for such
+    interactive use in the most ordinary way, to print or display an
+    announcement including an appropriate copyright notice and a
+    notice that there is no warranty (or else, saying that you provide
+    a warranty) and that users may redistribute the program under
+    these conditions, and telling the user how to view a copy of this
+    License.  (Exception: if the Program itself is interactive but
+    does not normally print such an announcement, your work based on
+    the Program is not required to print an announcement.)
+
+These requirements apply to the modified work as a whole.  If
+identifiable sections of that work are not derived from the Program,
+and can be reasonably considered independent and separate works in
+themselves, then this License, and its terms, do not apply to those
+sections when you distribute them as separate works.  But when you
+distribute the same sections as part of a whole which is a work based
+on the Program, the distribution of the whole must be on the terms of
+this License, whose permissions for other licensees extend to the
+entire whole, and thus to each and every part regardless of who wrote it.
+
+Thus, it is not the intent of this section to claim rights or contest
+your rights to work written entirely by you; rather, the intent is to
+exercise the right to control the distribution of derivative or
+collective works based on the Program.
+
+In addition, mere aggregation of another work not based on the Program
+with the Program (or with a work based on the Program) on a volume of
+a storage or distribution medium does not bring the other work under
+the scope of this License.
+
+  3. You may copy and distribute the Program (or a work based on it,
+under Section 2) in object code or executable form under the terms of
+Sections 1 and 2 above provided that you also do one of the following:
+
+    a) Accompany it with the complete corresponding machine-readable
+    source code, which must be distributed under the terms of Sections
+    1 and 2 above on a medium customarily used for software interchange; or,
+
+    b) Accompany it with a written offer, valid for at least three
+    years, to give any third party, for a charge no more than your
+    cost of physically performing source distribution, a complete
+    machine-readable copy of the corresponding source code, to be
+    distributed under the terms of Sections 1 and 2 above on a medium
+    customarily used for software interchange; or,
+
+    c) Accompany it with the information you received as to the offer
+    to distribute corresponding source code.  (This alternative is
+    allowed only for noncommercial distribution and only if you
+    received the program in object code or executable form with such
+    an offer, in accord with Subsection b above.)
+
+The source code for a work means the preferred form of the work for
+making modifications to it.  For an executable work, complete source
+code means all the source code for all modules it contains, plus any
+associated interface definition files, plus the scripts used to
+control compilation and installation of the executable.  However, as a
+special exception, the source code distributed need not include
+anything that is normally distributed (in either source or binary
+form) with the major components (compiler, kernel, and so on) of the
+operating system on which the executable runs, unless that component
+itself accompanies the executable.
+
+If distribution of executable or object code is made by offering
+access to copy from a designated place, then offering equivalent
+access to copy the source code from the same place counts as
+distribution of the source code, even though third parties are not
+compelled to copy the source along with the object code.
+
+  4. You may not copy, modify, sublicense, or distribute the Program
+except as expressly provided under this License.  Any attempt
+otherwise to copy, modify, sublicense or distribute the Program is
+void, and will automatically terminate your rights under this License.
+However, parties who have received copies, or rights, from you under
+this License will not have their licenses terminated so long as such
+parties remain in full compliance.
+
+  5. You are not required to accept this License, since you have not
+signed it.  However, nothing else grants you permission to modify or
+distribute the Program or its derivative works.  These actions are
+prohibited by law if you do not accept this License.  Therefore, by
+modifying or distributing the Program (or any work based on the
+Program), you indicate your acceptance of this License to do so, and
+all its terms and conditions for copying, distributing or modifying
+the Program or works based on it.
+
+  6. Each time you redistribute the Program (or any work based on the
+Program), the recipient automatically receives a license from the
+original licensor to copy, distribute or modify the Program subject to
+these terms and conditions.  You may not impose any further
+restrictions on the recipients' exercise of the rights granted herein.
+You are not responsible for enforcing compliance by third parties to
+this License.
+
+  7. If, as a consequence of a court judgment or allegation of patent
+infringement or for any other reason (not limited to patent issues),
+conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot
+distribute so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you
+may not distribute the Program at all.  For example, if a patent
+license would not permit royalty-free redistribution of the Program by
+all those who receive copies directly or indirectly through you, then
+the only way you could satisfy both it and this License would be to
+refrain entirely from distribution of the Program.
+
+If any portion of this section is held invalid or unenforceable under
+any particular circumstance, the balance of the section is intended to
+apply and the section as a whole is intended to apply in other
+circumstances.
+
+It is not the purpose of this section to induce you to infringe any
+patents or other property right claims or to contest validity of any
+such claims; this section has the sole purpose of protecting the
+integrity of the free software distribution system, which is
+implemented by public license practices.  Many people have made
+generous contributions to the wide range of software distributed
+through that system in reliance on consistent application of that
+system; it is up to the author/donor to decide if he or she is willing
+to distribute software through any other system and a licensee cannot
+impose that choice.
+
+This section is intended to make thoroughly clear what is believed to
+be a consequence of the rest of this License.
+
+  8. If the distribution and/or use of the Program is restricted in
+certain countries either by patents or by copyrighted interfaces, the
+original copyright holder who places the Program under this License
+may add an explicit geographical distribution limitation excluding
+those countries, so that distribution is permitted only in or among
+countries not thus excluded.  In such case, this License incorporates
+the limitation as if written in the body of this License.
+
+  9. The Free Software Foundation may publish revised and/or new versions
+of the General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+Each version is given a distinguishing version number.  If the Program
+specifies a version number of this License which applies to it and "any
+later version", you have the option of following the terms and conditions
+either of that version or of any later version published by the Free
+Software Foundation.  If the Program does not specify a version number of
+this License, you may choose any version ever published by the Free Software
+Foundation.
+
+  10. If you wish to incorporate parts of the Program into other free
+programs whose distribution conditions are different, write to the author
+to ask for permission.  For software which is copyrighted by the Free
+Software Foundation, write to the Free Software Foundation; we sometimes
+make exceptions for this.  Our decision will be guided by the two goals
+of preserving the free status of all derivatives of our free software and
+of promoting the sharing and reuse of software generally.
+
+          NO WARRANTY
+
+  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
+OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
+PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
+OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS
+TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
+PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
+REPAIR OR CORRECTION.
+
+  12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
+REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
+OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
+TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
+YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
+PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGES.
+
+         END OF TERMS AND CONDITIONS
+
+      How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+convey the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License along
+    with this program; if not, write to the Free Software Foundation, Inc.,
+    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program is interactive, make it output a short notice like this
+when it starts in an interactive mode:
+
+    Gnomovision version 69, Copyright (C) year name of author
+    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, the commands you use may
+be called something other than `show w' and `show c'; they could even be
+mouse-clicks or menu items--whatever suits your program.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary.  Here is a sample; alter the names:
+
+  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
+  `Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+  <signature of Ty Coon>, 1 April 1989
+  Ty Coon, President of Vice
+
+This General Public License does not permit incorporating your program into
+proprietary programs.  If your program is a subroutine library, you may
+consider it more useful to permit linking proprietary applications with the
+library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.

web/core/lib/Drupal/Component/Annotation/Plugin.php

@@ -0,0 +1,112 @@
+<?php
+
+namespace Drupal\Component\Annotation;
+
+use Drupal\Component\Utility\NestedArray;
+
+/**
+ * Defines a Plugin annotation object.
+ *
+ * Annotations in plugin classes can use this class in order to pass various
+ * metadata about the plugin through the parser to
+ * DiscoveryInterface::getDefinitions() calls. This allows the metadata
+ * of a class to be located with the class itself, rather than in module-based
+ * info hooks.
+ *
+ * @ingroup plugin_api
+ *
+ * @Annotation
+ */
+class Plugin implements AnnotationInterface {
+
+  /**
+   * The plugin definition read from the class annotation.
+   *
+   * @var array
+   */
+  protected $definition;
+
+  /**
+   * Constructs a Plugin object.
+   *
+   * Builds up the plugin definition and invokes the get() method for any
+   * classed annotations that were used.
+   */
+  public function __construct($values) {
+    $reflection = new \ReflectionClass($this);
+    // Only keep actual default values by ignoring NULL values.
+    $defaults = array_filter($reflection->getDefaultProperties(), function ($value) {
+      return $value !== NULL;
+    });
+    $parsed_values = $this->parse($values);
+    $this->definition = NestedArray::mergeDeepArray([$defaults, $parsed_values], TRUE);
+  }
+
+  /**
+   * Parses an annotation into its definition.
+   *
+   * @param array $values
+   *   The annotation array.
+   *
+   * @return array
+   *   The parsed annotation as a definition.
+   */
+  protected function parse(array $values) {
+    $definitions = [];
+    foreach ($values as $key => $value) {
+      if ($value instanceof AnnotationInterface) {
+        $definitions[$key] = $value->get();
+      }
+      elseif (is_array($value)) {
+        $definitions[$key] = $this->parse($value);
+      }
+      else {
+        $definitions[$key] = $value;
+      }
+    }
+    return $definitions;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function get() {
+    return $this->definition;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getProvider() {
+    return $this->definition['provider'] ?? FALSE;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function setProvider($provider) {
+    $this->definition['provider'] = $provider;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getId() {
+    return $this->definition['id'];
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getClass() {
+    return $this->definition['class'];
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function setClass($class) {
+    $this->definition['class'] = $class;
+  }
+
+}

web/core/lib/Drupal/Component/Annotation/Plugin/Discovery/AnnotatedClassDiscovery.php

@@ -0,0 +1,191 @@
+<?php
+
+namespace Drupal\Component\Annotation\Plugin\Discovery;
+
+use Drupal\Component\Annotation\AnnotationInterface;
+use Drupal\Component\FileCache\FileCacheFactory;
+use Drupal\Component\Plugin\Discovery\DiscoveryInterface;
+use Drupal\Component\Annotation\Doctrine\SimpleAnnotationReader;
+use Drupal\Component\Annotation\Doctrine\StaticReflectionParser;
+use Drupal\Component\Annotation\Reflection\MockFileFinder;
+use Doctrine\Common\Annotations\AnnotationRegistry;
+use Drupal\Component\Plugin\Discovery\DiscoveryTrait;
+use Drupal\Component\Utility\Crypt;
+
+/**
+ * Defines a discovery mechanism to find annotated plugins in PSR-4 namespaces.
+ */
+class AnnotatedClassDiscovery implements DiscoveryInterface {
+
+  use DiscoveryTrait;
+
+  /**
+   * The namespaces within which to find plugin classes.
+   *
+   * @var string[]
+   */
+  protected $pluginNamespaces;
+
+  /**
+   * The name of the annotation that contains the plugin definition.
+   *
+   * The class corresponding to this name must implement
+   * \Drupal\Component\Annotation\AnnotationInterface.
+   *
+   * @var string
+   */
+  protected $pluginDefinitionAnnotationName;
+
+  /**
+   * The doctrine annotation reader.
+   *
+   * @var \Doctrine\Common\Annotations\Reader
+   */
+  protected $annotationReader;
+
+  /**
+   * Additional namespaces to be scanned for annotation classes.
+   *
+   * @var string[]
+   */
+  protected $annotationNamespaces = [];
+
+  /**
+   * The file cache object.
+   *
+   * @var \Drupal\Component\FileCache\FileCacheInterface
+   */
+  protected $fileCache;
+
+  /**
+   * Constructs a new instance.
+   *
+   * @param string[] $plugin_namespaces
+   *   (optional) An array of namespace that may contain plugin implementations.
+   *   Defaults to an empty array.
+   * @param string $plugin_definition_annotation_name
+   *   (optional) The name of the annotation that contains the plugin
+   *   definition. Defaults to 'Drupal\Component\Annotation\Plugin'.
+   * @param string[] $annotation_namespaces
+   *   (optional) Additional namespaces to be scanned for annotation classes.
+   */
+  public function __construct($plugin_namespaces = [], $plugin_definition_annotation_name = 'Drupal\Component\Annotation\Plugin', array $annotation_namespaces = []) {
+    $this->pluginNamespaces = $plugin_namespaces;
+    $this->pluginDefinitionAnnotationName = $plugin_definition_annotation_name;
+    $this->annotationNamespaces = $annotation_namespaces;
+
+    $file_cache_suffix = str_replace('\\', '_', $plugin_definition_annotation_name);
+    $file_cache_suffix .= ':' . Crypt::hashBase64(serialize($annotation_namespaces));
+    $this->fileCache = FileCacheFactory::get('annotation_discovery:' . $file_cache_suffix);
+  }
+
+  /**
+   * Gets the used doctrine annotation reader.
+   *
+   * @return \Doctrine\Common\Annotations\Reader
+   *   The annotation reader.
+   */
+  protected function getAnnotationReader() {
+    if (!isset($this->annotationReader)) {
+      $this->annotationReader = new SimpleAnnotationReader();
+
+      // Add the namespaces from the main plugin annotation, like @EntityType.
+      $namespace = substr($this->pluginDefinitionAnnotationName, 0, strrpos($this->pluginDefinitionAnnotationName, '\\'));
+      $this->annotationReader->addNamespace($namespace);
+
+      // Register additional namespaces to be scanned for annotations.
+      foreach ($this->annotationNamespaces as $namespace) {
+        $this->annotationReader->addNamespace($namespace);
+      }
+    }
+    return $this->annotationReader;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getDefinitions() {
+    $definitions = [];
+
+    $reader = $this->getAnnotationReader();
+
+    // Clear the annotation loaders of any previous annotation classes.
+    AnnotationRegistry::reset();
+
+    // Search for classes within all PSR-4 namespace locations.
+    foreach ($this->getPluginNamespaces() as $namespace => $dirs) {
+      foreach ($dirs as $dir) {
+        if (file_exists($dir)) {
+          $iterator = new \RecursiveIteratorIterator(
+            new \RecursiveDirectoryIterator($dir, \RecursiveDirectoryIterator::SKIP_DOTS)
+          );
+          foreach ($iterator as $fileinfo) {
+            if ($fileinfo->getExtension() == 'php') {
+              if ($cached = $this->fileCache->get($fileinfo->getPathName())) {
+                if (isset($cached['id'])) {
+                  // Explicitly unserialize this to create a new object
+                  // instance.
+                  $definitions[$cached['id']] = unserialize($cached['content']);
+                }
+                continue;
+              }
+
+              $sub_path = $iterator->getSubIterator()->getSubPath();
+              $sub_path = $sub_path ? str_replace(DIRECTORY_SEPARATOR, '\\', $sub_path) . '\\' : '';
+              $class = $namespace . '\\' . $sub_path . $fileinfo->getBasename('.php');
+
+              // The filename is already known, so there is no need to find the
+              // file. However, StaticReflectionParser needs a finder, so use a
+              // mock version.
+              $finder = MockFileFinder::create($fileinfo->getPathName());
+              $parser = new StaticReflectionParser($class, $finder, TRUE);
+
+              /** @var \Drupal\Component\Annotation\AnnotationInterface $annotation */
+              if ($annotation = $reader->getClassAnnotation($parser->getReflectionClass(), $this->pluginDefinitionAnnotationName)) {
+                $this->prepareAnnotationDefinition($annotation, $class);
+
+                $id = $annotation->getId();
+                $content = $annotation->get();
+                $definitions[$id] = $content;
+                // Explicitly serialize this to create a new object instance.
+                $this->fileCache->set($fileinfo->getPathName(), ['id' => $id, 'content' => serialize($content)]);
+              }
+              else {
+                // Store a NULL object, so the file is not parsed again.
+                $this->fileCache->set($fileinfo->getPathName(), [NULL]);
+              }
+            }
+          }
+        }
+      }
+    }
+
+    // Don't let annotation loaders pile up.
+    AnnotationRegistry::reset();
+
+    return $definitions;
+  }
+
+  /**
+   * Prepares the annotation definition.
+   *
+   * @param \Drupal\Component\Annotation\AnnotationInterface $annotation
+   *   The annotation derived from the plugin.
+   * @param string $class
+   *   The class used for the plugin.
+   */
+  protected function prepareAnnotationDefinition(AnnotationInterface $annotation, $class) {
+    $annotation->setClass($class);
+  }
+
+  /**
+   * Gets an array of PSR-4 namespaces to search for plugin classes.
+   *
+   * @return string[]
+   *   The PSR-4 namespaces for the plugin class.
+   */
+  protected function getPluginNamespaces() {
+    return $this->pluginNamespaces;
+  }
+
+}

web/core/lib/Drupal/Component/Annotation/Plugin/Discovery/AnnotationBridgeDecorator.php

@@ -0,0 +1,75 @@
+<?php
+
+namespace Drupal\Component\Annotation\Plugin\Discovery;
+
+use Drupal\Component\Plugin\Discovery\DiscoveryInterface;
+use Drupal\Component\Plugin\Discovery\DiscoveryTrait;
+
+/**
+ * Ensures that all definitions are run through the annotation process.
+ */
+class AnnotationBridgeDecorator implements DiscoveryInterface {
+
+  use DiscoveryTrait;
+
+  /**
+   * The decorated plugin discovery.
+   *
+   * @var \Drupal\Component\Plugin\Discovery\DiscoveryInterface
+   */
+  protected $decorated;
+
+  /**
+   * The name of the annotation that contains the plugin definition.
+   *
+   * @var string|null
+   */
+  protected $pluginDefinitionAnnotationName;
+
+  /**
+   * ObjectDefinitionDiscoveryDecorator constructor.
+   *
+   * @param \Drupal\Component\Plugin\Discovery\DiscoveryInterface $decorated
+   *   The discovery object that is being decorated.
+   * @param string $plugin_definition_annotation_name
+   *   The name of the annotation that contains the plugin definition. The class
+   *   corresponding to this name must implement
+   *   \Drupal\Component\Annotation\AnnotationInterface.
+   */
+  public function __construct(DiscoveryInterface $decorated, $plugin_definition_annotation_name) {
+    $this->decorated = $decorated;
+    $this->pluginDefinitionAnnotationName = $plugin_definition_annotation_name;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getDefinitions() {
+    $definitions = $this->decorated->getDefinitions();
+    foreach ($definitions as $id => $definition) {
+      // Annotation constructors expect an array of values. If the definition is
+      // not an array, it usually means it has been processed already and can be
+      // ignored.
+      if (is_array($definition)) {
+        $definitions[$id] = (new $this->pluginDefinitionAnnotationName($definition))->get();
+      }
+    }
+    return $definitions;
+  }
+
+  /**
+   * Passes through all unknown calls onto the decorated object.
+   *
+   * @param string $method
+   *   The method to call on the decorated plugin discovery.
+   * @param array $args
+   *   The arguments to send to the method.
+   *
+   * @return mixed
+   *   The method result.
+   */
+  public function __call($method, $args) {
+    return call_user_func_array([$this->decorated, $method], $args);
+  }
+
+}

web/core/lib/Drupal/Component/Annotation/PluginID.php

@@ -0,0 +1,39 @@
+<?php
+
+namespace Drupal\Component\Annotation;
+
+/**
+ * Defines a Plugin annotation object that just contains an ID.
+ *
+ * @Annotation
+ */
+class PluginID extends AnnotationBase {
+
+  /**
+   * The plugin ID.
+   *
+   * When an annotation is given no key, 'value' is assumed by Doctrine.
+   *
+   * @var string
+   */
+  public $value;
+
+  /**
+   * {@inheritdoc}
+   */
+  public function get() {
+    return [
+      'id' => $this->value,
+      'class' => $this->class,
+      'provider' => $this->provider,
+    ];
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getId() {
+    return $this->value;
+  }
+
+}

web/core/lib/Drupal/Component/Annotation/README.txt

@@ -0,0 +1,12 @@
+The Drupal Annotation Component
+
+Thanks for using this Drupal component.
+
+You can participate in its development on Drupal.org, through our issue system:
+https://www.drupal.org/project/issues/drupal
+
+You can get the full Drupal repo here:
+https://www.drupal.org/project/drupal/git-instructions
+
+You can browse the full Drupal repo here:
+https://git.drupalcode.org/project/drupal

web/core/lib/Drupal/Component/Annotation/Reflection/MockFileFinder.php

@@ -0,0 +1,40 @@
+<?php
+
+namespace Drupal\Component\Annotation\Reflection;
+
+use Drupal\Component\ClassFinder\ClassFinderInterface;
+
+/**
+ * Defines a mock file finder that only returns a single filename.
+ *
+ * This can be used with
+ * Drupal\Component\Annotation\Doctrine\StaticReflectionParser if the filename
+ * is known and inheritance is not a concern (for example, if only the class
+ * annotation is needed).
+ */
+class MockFileFinder implements ClassFinderInterface {
+
+  /**
+   * The only filename this finder ever returns.
+   *
+   * @var string
+   */
+  protected $filename;
+
+  /**
+   * {@inheritdoc}
+   */
+  public function findFile($class) {
+    return $this->filename;
+  }
+
+  /**
+   * Creates new mock file finder objects.
+   */
+  public static function create($filename) {
+    $object = new static();
+    $object->filename = $filename;
+    return $object;
+  }
+
+}

web/core/lib/Drupal/Component/Annotation/TESTING.txt

@@ -0,0 +1,18 @@
+HOW-TO: Test this Drupal component
+
+In order to test this component, you'll need to get the entire Drupal repo and
+run the tests there.
+
+You'll find the tests under core/tests/Drupal/Tests/Component.
+
+You can get the full Drupal repo here:
+https://www.drupal.org/project/drupal/git-instructions
+
+You can find more information about running PHPUnit tests with Drupal here:
+https://www.drupal.org/node/2116263
+
+Each component in the Drupal\Component namespace has its own annotated test
+group. You can use this group to run only the tests for this component. Like
+this:
+
+$ ./vendor/bin/phpunit -c core --group Annotation

web/core/lib/Drupal/Component/Annotation/composer.json

@@ -0,0 +1,29 @@
+{
+    "name": "drupal/core-annotation",
+    "description": "Annotation discovery and implementation of plugins.",
+    "keywords": [
+        "drupal"
+    ],
+    "homepage": "https://www.drupal.org/project/drupal",
+    "license": "GPL-2.0-or-later",
+    "require": {
+        "php": ">=8.3.0",
+        "doctrine/annotations": "^2.0",
+        "doctrine/lexer": "^2.0",
+        "drupal/core-class-finder": "^11.2",
+        "drupal/core-file-cache": "^11.2",
+        "drupal/core-plugin": "^11.2",
+        "drupal/core-utility": "^11.2"
+    },
+    "autoload": {
+        "psr-4": {
+            "Drupal\\Component\\Annotation\\": ""
+        }
+    },
+    "extra": {
+        "_readme": [
+            "This file was partially generated automatically. See: https://www.drupal.org/node/3293830"
+        ]
+    },
+    "minimum-stability": "dev"
+}