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<?php/* * This file is part of the Symfony package. * * (c) Fabien Potencier <> * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */namespace Symfony\Component\Routing\Generator;use Symfony\Component\Routing\Exception\InvalidParameterException;use Symfony\Component\Routing\Exception\MissingMandatoryParametersException;use Symfony\Component\Routing\Exception\RouteNotFoundException;use Symfony\Component\Routing\RequestContextAwareInterface;/** * UrlGeneratorInterface is the interface that all URL generator classes must implement. * * The constants in this interface define the different types of resource references that * are declared in RFC 3986: * We are using the term "URL" instead of "URI" as this is more common in web applications * and we do not need to distinguish them as the difference is mostly semantical and * less technical. Generating URIs, i.e. representation-independent resource identifiers, * is also possible. * * @author Fabien Potencier <> * @author Tobias Schultze <> */interface UrlGeneratorInterface extends RequestContextAwareInterface{    /**     * Generates an absolute URL, e.g. "".     */    public const ABSOLUTE_URL = 0;    /**     * Generates an absolute path, e.g. "/dir/file".     */    public const ABSOLUTE_PATH = 1;    /**     * Generates a relative path based on the current request path, e.g. "../parent-file".     *     * @see UrlGenerator::getRelativePath()     */    public const RELATIVE_PATH = 2;    /**     * Generates a network path, e.g. "//".     * Such reference reuses the current scheme but specifies the host.     */    public const NETWORK_PATH = 3;    /**     * Generates a URL or path for a specific route based on the given parameters.     *     * Parameters that reference placeholders in the route pattern will substitute them in the     * path or host. Extra params are added as query string to the URL.     *     * When the passed reference type cannot be generated for the route because it requires a different     * host or scheme than the current one, the method will return a more comprehensive reference     * that includes the required params. For example, when you call this method with $referenceType = ABSOLUTE_PATH     * but the route requires the https scheme whereas the current scheme is http, it will instead return an     * ABSOLUTE_URL with the https scheme and the current host. This makes sure the generated URL matches     * the route in any case.     *     * If there is no route with the given name, the generator must throw the RouteNotFoundException.     *     * The special parameter _fragment will be used as the document fragment suffixed to the final URL.     *     * @return string The generated URL     *     * @throws RouteNotFoundException              If the named route doesn't exist     * @throws MissingMandatoryParametersException When some parameters are missing that are mandatory for the route     * @throws InvalidParameterException           When a parameter value for a placeholder is not correct because     *                                             it does not match the requirement     */    public function generate(string $name, array $parameters = [], int $referenceType = self::ABSOLUTE_PATH);}