1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 <?php
/*
* This file is part of the ICanBoogie package.
*
* (c) Olivier Laviale <olivier.laviale@gmail.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace ICanBoogie\HTTP;
/**
* Provides a {@link Dispatcher} instance.
*/
class DispatcherProvider
{
/**
* @var callable {@link Dispatcher} provider
*/
static private $provider;
/**
* Whether a provider if defined.
*
* @return callable|null
*/
static public function defined()
{
return self::$provider;
}
/**
* Defines the {@link Dispatcher} provider.
*
* @param callable $provider
*
* @return callable|null The previous provider, or `null` if none was defined before.
*/
static public function define(callable $provider)
{
$previous = self::$provider;
self::$provider = $provider;
return $previous;
}
/**
* Undefine the {@link Dispatcher} provider.
*/
static public function undefine()
{
self::$provider = null;
}
/**
* Returns a {@link Dispatcher} instance using the provider.
*
* @return Dispatcher
*
* @throws DispatcherProviderNotDefined if no provider is defined.
*/
static public function provide()
{
$provider = self::$provider;
if (!$provider)
{
throw new DispatcherProviderNotDefined;
}
return $provider();
}
}