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<?php |
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/** |
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* This file is part of Properties package. |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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declare(strict_types=1); |
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namespace Serafim\Properties; |
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use Psr\SimpleCache\CacheInterface; |
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use Serafim\Properties\Attribute\AttributeInterface; |
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/** |
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* Class Bootstrap |
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*/ |
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final class Bootstrap |
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{ |
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/** |
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* @var Bootstrap |
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*/ |
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private static $instance; |
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/** |
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* @var CacheInterface |
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*/ |
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private $cache; |
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/** |
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* @var Builder |
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*/ |
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private $builder; |
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/** |
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* @var array|string[] |
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*/ |
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private $inheritance = []; |
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/** |
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* @return Bootstrap |
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*/ |
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public static function getInstance(): self |
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{ |
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return self::$instance ?? self::setInstance(new self()); |
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} |
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/** |
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* @param self|Bootstrap $instance |
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* @return Bootstrap |
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*/ |
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public static function setInstance(?self $instance): self |
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{ |
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return self::$instance = $instance; |
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} |
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/** |
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* Bootstrap constructor. |
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*/ |
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private function __construct() |
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{ |
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$this->cache = new ArrayCache(); |
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$this->builder = new Builder(); |
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} |
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/** |
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* @return array |
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*/ |
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public function getInvocationPosition(): array |
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{ |
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$trace = \debug_backtrace(\DEBUG_BACKTRACE_IGNORE_ARGS)[2] ?? []; |
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return [$trace['file'] ?? __FILE__, $trace['line'] ?? __LINE__]; |
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} |
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/** |
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* @param null|CacheInterface $cache |
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*/ |
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public function setCacheDriver(?CacheInterface $cache): void |
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{ |
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$this->cache = $cache ?? new ArrayCache(); |
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} |
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/** |
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* @param string $class |
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* @param string $name |
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* @return AttributeInterface|null |
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* @throws \Psr\SimpleCache\InvalidArgumentException |
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*/ |
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public function getAttribute(string $class, string $name): ?AttributeInterface |
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{ |
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foreach ($this->getClassInheritance($class) as $child) { |
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$result = $this->getAttributeOrBuild($child, $name, function () use ($child) { |
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foreach ($this->builder->buildClass($child) as $attribute) { |
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yield $this->getCacheKey($child, $attribute->getName()) => $attribute; |
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} |
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}); |
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if ($result) { |
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return $result; |
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} |
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} |
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return null; |
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} |
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/** |
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* @param string $class |
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* @param string $name |
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* @return bool |
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* @throws \Psr\SimpleCache\InvalidArgumentException |
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*/ |
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public function hasAttribute(string $class, string $name): bool |
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{ |
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return $this->getAttribute($class, $name) !== null; |
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} |
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/** |
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* @param string $class |
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* @return iterable|string[] |
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*/ |
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private function getClassInheritance(string $class): iterable |
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{ |
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$inheritance = function() use ($class) { |
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yield $class; |
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yield from \array_keys(\class_parents($class)); |
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yield from \array_keys(\class_implements($class)); |
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yield from \array_keys(\class_uses($class)); |
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}; |
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if (! isset($this->inheritance[$class])) { |
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$this->inheritance[$class] = \iterator_to_array($inheritance(), false); |
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} |
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return $this->inheritance[$class]; |
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} |
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/** |
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* @param string $class |
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* @param string $name |
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* @param \Closure $build |
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* @return null|AttributeInterface |
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* @throws \Psr\SimpleCache\InvalidArgumentException |
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*/ |
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private function getAttributeOrBuild(string $class, string $name, \Closure $build): ?AttributeInterface |
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{ |
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$key = $this->getCacheKey($class, $name); |
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if (! $this->cache->has($key)) { |
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foreach ($build() as $inner => $attribute) { |
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$this->cache->set($inner, $attribute); |
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} |
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} |
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return $this->cache->get($key); |
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} |
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/** |
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* @param string $class |
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* @param string $name |
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* @return string |
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*/ |
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private function getCacheKey(string $class, string $name): string |
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{ |
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return \hash('md4', \implode(':', [$class, $name])); |
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} |
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} |
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SerafimArts /
Properties
This check looks for function or method calls that always return null and whose return value is assigned to a variable.
The method
getObject()can return nothing but null, so it makes no sense to assign that value to a variable.The reason is most likely that a function or method is imcomplete or has been reduced for debug purposes.