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<?php |
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/** |
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* This program is free software. It comes without any warranty, to |
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* the extent permitted by applicable law. You can redistribute it |
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* and/or modify it under the terms of the Do What The Fuck You Want |
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* To Public License, Version 2, as published by Sam Hocevar. See |
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* http://www.wtfpl.net/ for more details. |
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*/ |
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declare(strict_types = 1); |
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namespace hanneskod\classtools\Instantiator; |
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use hanneskod\classtools\Exception\LogicException; |
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/** |
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* Instantiate reflected class |
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* |
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* @author Hannes Forsgård <[email protected]> |
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*/ |
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class Instantiator |
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{ |
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/** |
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* @var \ReflectionClass |
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*/ |
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private $class; |
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/** |
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* Set class to instantiate |
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*/ |
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public function setReflectionClass(\ReflectionClass $class): void |
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{ |
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$this->class = $class; |
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} |
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/** |
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* Get loaded reflection class |
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* |
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* @throws LogicException If reflected class is not loaded |
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*/ |
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public function getReflectionClass(): \ReflectionClass |
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{ |
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if (!isset($this->class)) { |
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throw new LogicException("Reflected class not loaded"); |
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} |
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return $this->class; |
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} |
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/** |
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* Get number of required constructor parameters |
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*/ |
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public function countConstructorArgs(): int |
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{ |
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if ($constructor = $this->class->getConstructor()) { |
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return $constructor->getNumberOfRequiredParameters(); |
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} |
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return 0; |
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} |
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/** |
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* Check if class is instantiable |
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*/ |
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public function isInstantiable(): bool |
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{ |
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return $this->getReflectionClass()->isInstantiable(); |
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} |
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/** |
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* Check if class is instantiable without constructor parameters |
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*/ |
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public function isInstantiableWithoutArgs(): bool |
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{ |
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return $this->isInstantiable() && !$this->countConstructorArgs(); |
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} |
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/** |
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* Create instance |
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* |
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* @param array $args Optional constructor arguments |
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* @return mixed Instance of reflected class |
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* @throws LogicException If reflected class is not instantiable |
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*/ |
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public function instantiate(array $args = array()) |
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{ |
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if (!$this->isInstantiable()) { |
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throw new LogicException("Reflected class is not instantiable"); |
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} |
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if (count($args) < $this->countConstructorArgs()) { |
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throw new LogicException("Unable to instantiate, too few constructor arguments"); |
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} |
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return $this->getReflectionClass()->newInstanceArgs($args); |
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} |
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} |
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hanneskod /
classtools
