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<?php |
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declare(strict_types=1); |
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/** |
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* Caridea |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); you may not |
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* use this file except in compliance with the License. You may obtain a copy of |
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* the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0 |
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
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* License for the specific language governing permissions and limitations under |
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* the License. |
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* |
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* @copyright 2015-2018 LibreWorks contributors |
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* @license Apache-2.0 |
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*/ |
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namespace Caridea\Container; |
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/** |
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* Dependency injection instance provider. |
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* |
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* @copyright 2015-2018 LibreWorks contributors |
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* @license Apache-2.0 |
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*/ |
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class Provider |
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{ |
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/** |
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* @var boolean |
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*/ |
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private $singleton = true; |
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/** |
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* @var string |
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*/ |
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private $type; |
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/** |
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* @var mixed |
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*/ |
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private $instance; |
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/** |
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* @var callable |
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*/ |
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private $factory; |
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/** |
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* @internal |
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*/ |
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public function __construct(string $type, $factory, bool $singleton = true) |
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{ |
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9 |
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if (!class_exists($type) && !interface_exists($type)) { |
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1 |
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throw new \InvalidArgumentException("Unknown class or interface: '$type'"); |
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} |
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$this->type = $type; |
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if (!is_object($factory) || !method_exists($factory, '__invoke')) { |
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throw new \InvalidArgumentException('"factory" parameter must be a Closure or an object with an __invoke method'); |
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} |
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$this->factory = $factory; |
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6 |
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$this->singleton = boolval($singleton); |
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} |
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/** |
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* Gets the value instance. |
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* |
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* @param \Caridea\Container\Container $container The owning container |
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* @return mixed The value instance |
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*/ |
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public function get(Container $container) |
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{ |
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if ($this->singleton) { |
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if ($this->instance === null) { |
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$f = $this->factory; |
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$this->instance = $f($container); |
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} |
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return $this->instance; |
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} else { |
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1 |
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$f = $this->factory; |
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1 |
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return $f($container); |
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} |
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} |
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/** |
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* Whether this provider always returns the same instance. |
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* |
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* @return bool True if this provider always returns the same instance |
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*/ |
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2 |
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public function isSingleton(): bool |
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{ |
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2 |
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return $this->singleton; |
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} |
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/** |
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* Gets the type of instance. |
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* |
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* @return string gets the type of this instance |
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*/ |
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6 |
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public function getType(): string |
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{ |
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return $this->type; |
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} |
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} |
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libreworks /
caridea-container
