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<?php |
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/** |
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* Lenevor Framework |
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* |
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* LICENSE |
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* |
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* This source file is subject to the new BSD license that is bundled |
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* with this package in the file license.md. |
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* It is also available through the world-wide-web at this URL: |
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* https://lenevor.com/license |
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* If you did not receive a copy of the license and are unable to |
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* obtain it through the world-wide-web, please send an email |
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* to [email protected] so we can send you a copy immediately. |
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* |
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* @package Lenevor |
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* @subpackage Base |
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* @link https://lenevor.com |
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* @copyright Copyright (c) 2019 - 2021 Alexander Campo <[email protected]> |
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* @license https://opensource.org/licenses/BSD-3-Clause New BSD license or see https://lenevor.com/license or see /license.md |
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*/ |
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namespace Syscodes\Core; |
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use Exception; |
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use Syscodes\Filesystem\Filesystem; |
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use Syscodes\Contracts\Core\Application; |
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/** |
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* @author Alexander Campo <[email protected]> |
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*/ |
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class ProviderRepository |
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{ |
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/** |
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* The application implementation. |
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* |
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* @var \Syscodes\Contracts\Core\Application $app |
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*/ |
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protected $app; |
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/** |
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* The filesystem instance. |
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* |
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* @var \Syscodes\Filesystem\Filesystem $files |
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*/ |
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protected $files; |
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/** |
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* The path to the manifest file. |
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* |
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* @var string $manifestPath |
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*/ |
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protected $manifestPath; |
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/** |
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* Constructor. Create a new ProviderRepository class instance. |
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* |
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* @param \Syscodes\Contracts\Core\Application $app |
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* @param \Syscodes\Filesystem\Filesystem $files |
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* @param string $manifestPath |
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* |
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* @return void |
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*/ |
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public function __construct(Application $app, Filesystem $files, $manifestPath) |
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{ |
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$this->app = $app; |
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$this->files = $files; |
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$this->manifestPath = $manifestPath; |
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} |
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/** |
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* Register the application service providers. |
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* |
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* @param array $providers |
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* |
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* @return void |
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*/ |
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public function load(array $providers) |
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{ |
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$manifest = $this->loadManifest(); |
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if ($this->shouldRecompile($manifest, $providers)) { |
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$manifest = $this->compileManifest($providers); |
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} |
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foreach ($manifest['when'] as $provider => $events) { |
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$this->registerLoadEvents($provider, $events); |
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} |
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foreach ($manifest['eager'] as $provider) { |
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$this->app->register($provider); |
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} |
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$this->app->addDeferredServices($manifest['deferred']); |
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} |
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/** |
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* Load the service provider manifest JSON file. |
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* |
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* @return array|null |
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*/ |
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public function loadManifest() |
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{ |
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if ($this->files->exists($this->manifestPath)) { |
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$manifest = $this->files->getRequire($this->manifestPath); |
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if ($manifest) { |
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return array_merge(['when' => []], $manifest); |
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} |
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} |
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} |
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/** |
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* Determine if the manifest should be compiled. |
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* |
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* @param array $manifest |
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* @param array $providers |
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* |
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* @return bool |
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*/ |
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public function shouldRecompile($manifest, $providers) |
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{ |
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return is_null($manifest) || $manifest['providers'] != $providers; |
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} |
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/** |
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* Register the load events for the given provider. |
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* |
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* @param string $provider |
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* @param array $events |
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* |
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* @return void |
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*/ |
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protected function registerLoadEvents($provider, array $events) |
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{ |
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if (count($events) < 1) { |
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return; |
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} |
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$this->app->make('events')->listen($events, function () use ($provider) { |
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$this->app->register($provider); |
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}); |
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} |
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/** |
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* Compile the application service manifest file. |
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* |
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* @param array $providers |
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* |
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* @return array |
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*/ |
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protected function compileManifest($providers) |
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{ |
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$manifest = $this->freshManifest($providers); |
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foreach ($providers as $provider) { |
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$instance = $this->createProvider($provider); |
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if ($instance->isDeferred()) { |
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foreach ($instance->provides() as $service) { |
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$manifest['deferred'][$service] = $provider; |
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} |
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$manifest['when'][$provider] = $instance->when(); |
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} else { |
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$manifest['eager'][] = $provider; |
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} |
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} |
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return $this->writeManifest($manifest); |
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} |
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/** |
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* Create a fresh service manifest data structure. |
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* |
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* @param array $providers |
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* |
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* @return array |
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*/ |
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protected function freshManifest(array $providers) |
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{ |
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return ['providers' => $providers, 'eager' => [], 'deferred' => []]; |
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} |
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/** |
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* Write the service manifest file to disk. |
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* |
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* @param array $manifest |
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* |
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* @return array |
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* |
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* @throws \Exception |
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*/ |
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public function writeManifest($manifest) |
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{ |
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if (! is_writable($dirname = dirname($this->manifestPath))) { |
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throw new Exception("The {$dirname} directory must be present and writable."); |
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} |
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$this->files->replace( |
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$this->manifestPath, "<?php\n\nreturn ".var_export($manifest, true).';' |
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); |
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return array_merge(['when' => []], $manifest); |
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} |
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/** |
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* Create a new provider instance. |
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* |
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* @param string $provider |
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* |
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* @return \Syscodes\Support\ServiceProvider |
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*/ |
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public function createProvider($provider) |
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{ |
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return new $provider($this->app); |
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} |
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} |
lenevor /
syscodes
Loading history...
Let?s assume that you have a directory layout like this:
. |-- OtherDir | |-- Bar.php | `-- Foo.php `-- SomeDir `-- Foo.phpand let?s assume the following content of
Bar.php:If both files
OtherDir/Foo.phpandSomeDir/Foo.phpare loaded in the same runtime, you will see a PHP error such as the following:PHP Fatal error: Cannot use SomeDir\Foo as Foo because the name is already in use in OtherDir/Foo.phpHowever, as
OtherDir/Foo.phpdoes not necessarily have to be loaded and the error is only triggered if it is loaded beforeOtherDir/Bar.php, this problem might go unnoticed for a while. In order to prevent this error from surfacing, you must import the namespace with a different alias: