373 lines
13 KiB
PHP
373 lines
13 KiB
PHP
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<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Component\Routing\Loader;
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use Doctrine\Common\Annotations\Reader;
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use Symfony\Component\Config\Loader\LoaderInterface;
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use Symfony\Component\Config\Loader\LoaderResolverInterface;
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use Symfony\Component\Config\Resource\FileResource;
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use Symfony\Component\Routing\Annotation\Route as RouteAnnotation;
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use Symfony\Component\Routing\Route;
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use Symfony\Component\Routing\RouteCollection;
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/**
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* AnnotationClassLoader loads routing information from a PHP class and its methods.
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*
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* You need to define an implementation for the configureRoute() method. Most of the
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* time, this method should define some PHP callable to be called for the route
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* (a controller in MVC speak).
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*
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* The @Route annotation can be set on the class (for global parameters),
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* and on each method.
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*
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* The @Route annotation main value is the route path. The annotation also
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* recognizes several parameters: requirements, options, defaults, schemes,
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* methods, host, and name. The name parameter is mandatory.
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* Here is an example of how you should be able to use it:
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* /**
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* * @Route("/Blog")
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* * /
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* class Blog
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* {
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* /**
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* * @Route("/", name="blog_index")
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* * /
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* public function index()
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* {
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* }
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* /**
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* * @Route("/{id}", name="blog_post", requirements = {"id" = "\d+"})
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* * /
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* public function show()
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* {
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* }
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* }
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*
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* On PHP 8, the annotation class can be used as an attribute as well:
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* #[Route('/Blog')]
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* class Blog
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* {
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* #[Route('/', name: 'blog_index')]
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* public function index()
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* {
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* }
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* #[Route('/{id}', name: 'blog_post', requirements: ["id" => '\d+'])]
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* public function show()
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* {
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* }
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* }
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*
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* @author Fabien Potencier <fabien@symfony.com>
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* @author Alexander M. Turek <me@derrabus.de>
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*/
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abstract class AnnotationClassLoader implements LoaderInterface
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{
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protected $reader;
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protected $env;
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/**
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* @var string
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*/
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protected $routeAnnotationClass = RouteAnnotation::class;
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/**
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* @var int
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*/
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protected $defaultRouteIndex = 0;
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public function __construct(Reader $reader = null, string $env = null)
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{
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$this->reader = $reader;
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$this->env = $env;
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}
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/**
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* Sets the annotation class to read route properties from.
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*/
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public function setRouteAnnotationClass(string $class)
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{
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$this->routeAnnotationClass = $class;
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}
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/**
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* Loads from annotations from a class.
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*
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* @throws \InvalidArgumentException When route can't be parsed
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*/
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public function load(mixed $class, string $type = null): RouteCollection
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{
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if (!class_exists($class)) {
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throw new \InvalidArgumentException(sprintf('Class "%s" does not exist.', $class));
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}
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$class = new \ReflectionClass($class);
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if ($class->isAbstract()) {
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throw new \InvalidArgumentException(sprintf('Annotations from class "%s" cannot be read as it is abstract.', $class->getName()));
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}
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$globals = $this->getGlobals($class);
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$collection = new RouteCollection();
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$collection->addResource(new FileResource($class->getFileName()));
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if ($globals['env'] && $this->env !== $globals['env']) {
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return $collection;
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}
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foreach ($class->getMethods() as $method) {
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$this->defaultRouteIndex = 0;
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foreach ($this->getAnnotations($method) as $annot) {
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$this->addRoute($collection, $annot, $globals, $class, $method);
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}
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}
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if (0 === $collection->count() && $class->hasMethod('__invoke')) {
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$globals = $this->resetGlobals();
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foreach ($this->getAnnotations($class) as $annot) {
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$this->addRoute($collection, $annot, $globals, $class, $class->getMethod('__invoke'));
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}
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}
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return $collection;
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}
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/**
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* @param RouteAnnotation $annot or an object that exposes a similar interface
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*/
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protected function addRoute(RouteCollection $collection, object $annot, array $globals, \ReflectionClass $class, \ReflectionMethod $method)
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{
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if ($annot->getEnv() && $annot->getEnv() !== $this->env) {
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return;
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}
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$name = $annot->getName() ?? $this->getDefaultRouteName($class, $method);
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$name = $globals['name'].$name;
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$requirements = $annot->getRequirements();
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foreach ($requirements as $placeholder => $requirement) {
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if (\is_int($placeholder)) {
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throw new \InvalidArgumentException(sprintf('A placeholder name must be a string (%d given). Did you forget to specify the placeholder key for the requirement "%s" of route "%s" in "%s::%s()"?', $placeholder, $requirement, $name, $class->getName(), $method->getName()));
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}
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}
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$defaults = array_replace($globals['defaults'], $annot->getDefaults());
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$requirements = array_replace($globals['requirements'], $requirements);
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$options = array_replace($globals['options'], $annot->getOptions());
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$schemes = array_merge($globals['schemes'], $annot->getSchemes());
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$methods = array_merge($globals['methods'], $annot->getMethods());
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$host = $annot->getHost() ?? $globals['host'];
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$condition = $annot->getCondition() ?? $globals['condition'];
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$priority = $annot->getPriority() ?? $globals['priority'];
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$path = $annot->getLocalizedPaths() ?: $annot->getPath();
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$prefix = $globals['localized_paths'] ?: $globals['path'];
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$paths = [];
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if (\is_array($path)) {
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if (!\is_array($prefix)) {
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foreach ($path as $locale => $localePath) {
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$paths[$locale] = $prefix.$localePath;
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}
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} elseif ($missing = array_diff_key($prefix, $path)) {
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throw new \LogicException(sprintf('Route to "%s" is missing paths for locale(s) "%s".', $class->name.'::'.$method->name, implode('", "', array_keys($missing))));
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} else {
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foreach ($path as $locale => $localePath) {
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if (!isset($prefix[$locale])) {
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throw new \LogicException(sprintf('Route to "%s" with locale "%s" is missing a corresponding prefix in class "%s".', $method->name, $locale, $class->name));
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}
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$paths[$locale] = $prefix[$locale].$localePath;
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}
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}
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} elseif (\is_array($prefix)) {
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foreach ($prefix as $locale => $localePrefix) {
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$paths[$locale] = $localePrefix.$path;
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}
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} else {
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$paths[] = $prefix.$path;
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}
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foreach ($method->getParameters() as $param) {
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if (isset($defaults[$param->name]) || !$param->isDefaultValueAvailable()) {
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continue;
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}
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foreach ($paths as $locale => $path) {
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if (preg_match(sprintf('/\{%s(?:<.*?>)?\}/', preg_quote($param->name)), $path)) {
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$defaults[$param->name] = $param->getDefaultValue();
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break;
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}
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}
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}
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foreach ($paths as $locale => $path) {
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$route = $this->createRoute($path, $defaults, $requirements, $options, $host, $schemes, $methods, $condition);
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$this->configureRoute($route, $class, $method, $annot);
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if (0 !== $locale) {
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$route->setDefault('_locale', $locale);
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$route->setRequirement('_locale', preg_quote($locale));
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$route->setDefault('_canonical_route', $name);
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$collection->add($name.'.'.$locale, $route, $priority);
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} else {
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$collection->add($name, $route, $priority);
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}
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}
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}
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public function supports(mixed $resource, string $type = null): bool
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{
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return \is_string($resource) && preg_match('/^(?:\\\\?[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*)+$/', $resource) && (!$type || \in_array($type, ['annotation', 'attribute'], true));
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}
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public function setResolver(LoaderResolverInterface $resolver)
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{
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}
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public function getResolver(): LoaderResolverInterface
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{
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}
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/**
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* Gets the default route name for a class method.
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*
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* @return string
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*/
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protected function getDefaultRouteName(\ReflectionClass $class, \ReflectionMethod $method)
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{
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$name = str_replace('\\', '_', $class->name).'_'.$method->name;
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$name = \function_exists('mb_strtolower') && preg_match('//u', $name) ? mb_strtolower($name, 'UTF-8') : strtolower($name);
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if ($this->defaultRouteIndex > 0) {
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$name .= '_'.$this->defaultRouteIndex;
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}
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++$this->defaultRouteIndex;
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return $name;
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}
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protected function getGlobals(\ReflectionClass $class)
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{
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$globals = $this->resetGlobals();
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$annot = null;
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if ($attribute = $class->getAttributes($this->routeAnnotationClass, \ReflectionAttribute::IS_INSTANCEOF)[0] ?? null) {
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$annot = $attribute->newInstance();
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}
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if (!$annot && $this->reader) {
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$annot = $this->reader->getClassAnnotation($class, $this->routeAnnotationClass);
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}
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if ($annot) {
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if (null !== $annot->getName()) {
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$globals['name'] = $annot->getName();
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}
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if (null !== $annot->getPath()) {
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$globals['path'] = $annot->getPath();
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}
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$globals['localized_paths'] = $annot->getLocalizedPaths();
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if (null !== $annot->getRequirements()) {
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$globals['requirements'] = $annot->getRequirements();
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}
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if (null !== $annot->getOptions()) {
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$globals['options'] = $annot->getOptions();
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}
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if (null !== $annot->getDefaults()) {
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$globals['defaults'] = $annot->getDefaults();
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}
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if (null !== $annot->getSchemes()) {
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$globals['schemes'] = $annot->getSchemes();
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}
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if (null !== $annot->getMethods()) {
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$globals['methods'] = $annot->getMethods();
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}
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if (null !== $annot->getHost()) {
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$globals['host'] = $annot->getHost();
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}
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if (null !== $annot->getCondition()) {
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$globals['condition'] = $annot->getCondition();
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}
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$globals['priority'] = $annot->getPriority() ?? 0;
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$globals['env'] = $annot->getEnv();
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foreach ($globals['requirements'] as $placeholder => $requirement) {
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if (\is_int($placeholder)) {
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throw new \InvalidArgumentException(sprintf('A placeholder name must be a string (%d given). Did you forget to specify the placeholder key for the requirement "%s" in "%s"?', $placeholder, $requirement, $class->getName()));
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}
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}
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}
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return $globals;
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}
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private function resetGlobals(): array
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{
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return [
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'path' => null,
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'localized_paths' => [],
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'requirements' => [],
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'options' => [],
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'defaults' => [],
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'schemes' => [],
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'methods' => [],
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'host' => '',
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'condition' => '',
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'name' => '',
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'priority' => 0,
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'env' => null,
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];
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}
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protected function createRoute(string $path, array $defaults, array $requirements, array $options, ?string $host, array $schemes, array $methods, ?string $condition)
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{
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return new Route($path, $defaults, $requirements, $options, $host, $schemes, $methods, $condition);
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}
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abstract protected function configureRoute(Route $route, \ReflectionClass $class, \ReflectionMethod $method, object $annot);
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/**
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* @param \ReflectionClass|\ReflectionMethod $reflection
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*
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* @return iterable<int, RouteAnnotation>
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*/
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private function getAnnotations(object $reflection): iterable
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{
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foreach ($reflection->getAttributes($this->routeAnnotationClass, \ReflectionAttribute::IS_INSTANCEOF) as $attribute) {
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yield $attribute->newInstance();
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}
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if (!$this->reader) {
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return;
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}
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$annotations = $reflection instanceof \ReflectionClass
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? $this->reader->getClassAnnotations($reflection)
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: $this->reader->getMethodAnnotations($reflection);
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foreach ($annotations as $annotation) {
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if ($annotation instanceof $this->routeAnnotationClass) {
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yield $annotation;
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}
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}
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}
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}
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