70 lines
2.0 KiB
PHP
70 lines
2.0 KiB
PHP
<?php
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declare(strict_types=1);
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/**
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* @copyright 2020 Christoph Wurst <christoph@winzerhof-wurst.at>
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*
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* @author 2020 Christoph Wurst <christoph@winzerhof-wurst.at>
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*
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* @license GNU AGPL version 3 or any later version
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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namespace OC\AppFramework\Bootstrap;
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use Closure;
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use OCP\AppFramework\QueryException;
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use OCP\IContainer;
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use ReflectionFunction;
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use ReflectionParameter;
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use function array_map;
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class FunctionInjector {
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/** @var IContainer */
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private $container;
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public function __construct(IContainer $container) {
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$this->container = $container;
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}
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public function injectFn(callable $fn) {
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$reflected = new ReflectionFunction(Closure::fromCallable($fn));
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return $fn(...array_map(function (ReflectionParameter $param) {
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// First we try by type (more likely these days)
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if (($type = $param->getType()) !== null) {
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try {
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return $this->container->query($type->getName());
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} catch (QueryException $ex) {
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// Ignore and try name as well
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}
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}
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// Second we try by name (mostly for primitives)
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try {
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return $this->container->query($param->getName());
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} catch (QueryException $ex) {
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// As a last resort we pass `null` if allowed
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if ($type !== null && $type->allowsNull()) {
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return null;
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}
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// Nothing worked, time to bail out
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throw $ex;
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}
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}, $reflected->getParameters()));
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}
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}
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