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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Routing;
use Symfony\Component\Config\Resource\ResourceInterface;
use Symfony\Component\Routing\Exception\InvalidArgumentException;
use Symfony\Component\Routing\Exception\RouteCircularReferenceException;
/**
* A RouteCollection represents a set of Route instances.
*
* When adding a route at the end of the collection, an existing route
* with the same name is removed first. So there can only be one route
* with a given name.
*
* @author Fabien Potencier <fabien@symfony.com>
* @author Tobias Schultze <http://tobion.de>
*
* @implements \IteratorAggregate<string, Route>
*/
class RouteCollection implements \IteratorAggregate, \Countable
{
/**
* @var array<string, Route>
*/
private array $routes = [];
/**
* @var array<string, Alias>
*/
private array $aliases = [];
/**
* @var array<string, ResourceInterface>
*/
private array $resources = [];
/**
* @var array<string, int>
*/
private array $priorities = [];
public function __clone()
{
foreach ($this->routes as $name => $route) {
$this->routes[$name] = clone $route;
}
foreach ($this->aliases as $name => $alias) {
$this->aliases[$name] = clone $alias;
}
}
/**
* Gets the current RouteCollection as an Iterator that includes all routes.
*
* It implements \IteratorAggregate.
*
* @see all()
*
* @return \ArrayIterator<string, Route>
*/
public function getIterator(): \ArrayIterator
{
return new \ArrayIterator($this->all());
}
/**
* Gets the number of Routes in this collection.
*/
public function count(): int
{
return \count($this->routes);
}
public function add(string $name, Route $route, int $priority = 0): void
{
unset($this->routes[$name], $this->priorities[$name], $this->aliases[$name]);
$this->routes[$name] = $route;
if ($priority) {
$this->priorities[$name] = $priority;
}
}
/**
* Returns all routes in this collection.
*
* @return array<string, Route>
*/
public function all(): array
{
if ($this->priorities) {
$priorities = $this->priorities;
$keysOrder = array_flip(array_keys($this->routes));
uksort($this->routes, static fn ($n1, $n2) => (($priorities[$n2] ?? 0) <=> ($priorities[$n1] ?? 0)) ?: ($keysOrder[$n1] <=> $keysOrder[$n2]));
}
return $this->routes;
}
/**
* Gets a route by name.
*/
public function get(string $name): ?Route
{
$visited = [];
while (null !== $alias = $this->aliases[$name] ?? null) {
if (false !== $searchKey = array_search($name, $visited)) {
$visited[] = $name;
throw new RouteCircularReferenceException($name, \array_slice($visited, $searchKey));
}
if ($alias->isDeprecated()) {
$deprecation = $alias->getDeprecation($name);
trigger_deprecation($deprecation['package'], $deprecation['version'], $deprecation['message']);
}
$visited[] = $name;
$name = $alias->getId();
}
return $this->routes[$name] ?? null;
}
/**
* Removes a route or an array of routes by name from the collection.
*
* @param string|string[] $name The route name or an array of route names
*/
public function remove(string|array $name): void
{
$routes = [];
foreach ((array) $name as $n) {
if (isset($this->routes[$n])) {
$routes[] = $n;
}
unset($this->routes[$n], $this->priorities[$n], $this->aliases[$n]);
}
if (!$routes) {
return;
}
foreach ($this->aliases as $k => $alias) {
if (\in_array($alias->getId(), $routes, true)) {
unset($this->aliases[$k]);
}
}
}
/**
* Adds a route collection at the end of the current set by appending all
* routes of the added collection.
*/
public function addCollection(self $collection): void
{
// we need to remove all routes with the same names first because just replacing them
// would not place the new route at the end of the merged array
foreach ($collection->all() as $name => $route) {
unset($this->routes[$name], $this->priorities[$name], $this->aliases[$name]);
$this->routes[$name] = $route;
if (isset($collection->priorities[$name])) {
$this->priorities[$name] = $collection->priorities[$name];
}
}
foreach ($collection->getAliases() as $name => $alias) {
unset($this->routes[$name], $this->priorities[$name], $this->aliases[$name]);
$this->aliases[$name] = $alias;
}
foreach ($collection->getResources() as $resource) {
$this->addResource($resource);
}
}
/**
* Adds a prefix to the path of all child routes.
*/
public function addPrefix(string $prefix, array $defaults = [], array $requirements = []): void
{
$prefix = trim(trim($prefix), '/');
if ('' === $prefix) {
return;
}
foreach ($this->routes as $route) {
$route->setPath('/'.$prefix.$route->getPath());
$route->addDefaults($defaults);
$route->addRequirements($requirements);
}
}
/**
* Adds a prefix to the name of all the routes within in the collection.
*/
public function addNamePrefix(string $prefix): void
{
$prefixedRoutes = [];
$prefixedPriorities = [];
$prefixedAliases = [];
foreach ($this->routes as $name => $route) {
$prefixedRoutes[$prefix.$name] = $route;
if (null !== $canonicalName = $route->getDefault('_canonical_route')) {
$route->setDefault('_canonical_route', $prefix.$canonicalName);
}
if (isset($this->priorities[$name])) {
$prefixedPriorities[$prefix.$name] = $this->priorities[$name];
}
}
foreach ($this->aliases as $name => $alias) {
$targetId = $alias->getId();
if (isset($this->routes[$targetId]) || isset($this->aliases[$targetId])) {
$targetId = $prefix.$targetId;
}
$prefixedAliases[$prefix.$name] = $alias->withId($targetId);
}
$this->routes = $prefixedRoutes;
$this->priorities = $prefixedPriorities;
$this->aliases = $prefixedAliases;
}
/**
* Sets the host pattern on all routes.
*/
public function setHost(?string $pattern, array $defaults = [], array $requirements = []): void
{
foreach ($this->routes as $route) {
$route->setHost($pattern);
$route->addDefaults($defaults);
$route->addRequirements($requirements);
}
}
/**
* Sets a condition on all routes.
*
* Existing conditions will be overridden.
*/
public function setCondition(?string $condition): void
{
foreach ($this->routes as $route) {
$route->setCondition($condition);
}
}
/**
* Adds defaults to all routes.
*
* An existing default value under the same name in a route will be overridden.
*/
public function addDefaults(array $defaults): void
{
if ($defaults) {
foreach ($this->routes as $route) {
$route->addDefaults($defaults);
}
}
}
/**
* Adds requirements to all routes.
*
* An existing requirement under the same name in a route will be overridden.
*/
public function addRequirements(array $requirements): void
{
if ($requirements) {
foreach ($this->routes as $route) {
$route->addRequirements($requirements);
}
}
}
/**
* Adds options to all routes.
*
* An existing option value under the same name in a route will be overridden.
*/
public function addOptions(array $options): void
{
if ($options) {
foreach ($this->routes as $route) {
$route->addOptions($options);
}
}
}
/**
* Sets the schemes (e.g. 'https') all child routes are restricted to.
*
* @param string|string[] $schemes The scheme or an array of schemes
*/
public function setSchemes(string|array $schemes): void
{
foreach ($this->routes as $route) {
$route->setSchemes($schemes);
}
}
/**
* Sets the HTTP methods (e.g. 'POST') all child routes are restricted to.
*
* @param string|string[] $methods The method or an array of methods
*/
public function setMethods(string|array $methods): void
{
foreach ($this->routes as $route) {
$route->setMethods($methods);
}
}
/**
* Returns an array of resources loaded to build this collection.
*
* @return ResourceInterface[]
*/
public function getResources(): array
{
return array_values($this->resources);
}
/**
* Adds a resource for this collection. If the resource already exists
* it is not added.
*/
public function addResource(ResourceInterface $resource): void
{
$key = (string) $resource;
if (!isset($this->resources[$key])) {
$this->resources[$key] = $resource;
}
}
/**
* Sets an alias for an existing route.
*
* @param string $name The alias to create
* @param string $alias The route to alias
*
* @throws InvalidArgumentException if the alias is for itself
*/
public function addAlias(string $name, string $alias): Alias
{
if ($name === $alias) {
throw new InvalidArgumentException(\sprintf('Route alias "%s" can not reference itself.', $name));
}
unset($this->routes[$name], $this->priorities[$name]);
return $this->aliases[$name] = new Alias($alias);
}
/**
* @return array<string, Alias>
*/
public function getAliases(): array
{
return $this->aliases;
}
public function getAlias(string $name): ?Alias
{
return $this->aliases[$name] ?? null;
}
public function getPriority(string $name): ?int
{
return $this->priorities[$name] ?? null;
}
}