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<?php declare(strict_types=1); |
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namespace Igni\Utils; |
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use Closure; |
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use Igni\Utils\Exception\ReflectionApiException; |
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use Igni\Utils\ReflectionApi\RuntimeClass; |
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use ReflectionClass; |
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use ReflectionFunction; |
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use ReflectionMethod; |
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use Throwable; |
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final class ReflectionApi |
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{ |
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/** |
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* @var ReflectionClass[] |
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*/ |
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private static $reflections = []; |
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/** |
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* @var object[] |
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*/ |
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private static $instances = []; |
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/** |
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* Creates instance of the given class. |
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* |
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* @param string $class |
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* @return object |
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*/ |
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public static function createInstance(string $class) |
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{ |
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if (!isset(self::$instances[$class])) { |
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if (!class_exists($class)) { |
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throw ReflectionApiException::forNonExistentClass($class); |
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} |
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try { |
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self::$instances[$class] = unserialize(sprintf('O:%d:"%s":0:{}', strlen($class), $class)); |
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} catch (Throwable $exception) { |
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throw ReflectionApiException::forInstantiationFailure($class, $exception->getMessage()); |
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} |
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} |
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return clone self::$instances[$class]; |
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} |
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public static function createClass(string $class): RuntimeClass |
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{ |
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return new RuntimeClass($class); |
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} |
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public static function getClosureBody(Closure $closure): string |
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{ |
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$reflection = self::reflectFunction($closure); |
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$lines = file($reflection->getFileName()); |
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$body = ''; |
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for($l = $reflection->getStartLine() - 1; $l < $reflection->getEndLine(); $l++) { |
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$body .= $lines[$l]; |
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} |
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preg_match('#function\([^{].*?\{(.*)\}#is', $body, $matches); |
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return trim($matches[1]); |
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} |
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/** |
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* Overrides object's property value. |
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* |
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* @param $instance |
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* @param string $property property name |
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* @param $value |
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*/ |
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public static function writeProperty($instance, string $property, $value): void |
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{ |
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static $writer; |
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if ($writer === null) { |
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$writer = function ($name, $value) { |
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$this->$name = $value; |
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}; |
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} |
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$set = Closure::bind($writer, $instance, $instance); |
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$set($property, $value); |
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} |
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/** |
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* @param $instance |
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* @param string $property |
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* @return mixed |
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*/ |
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public static function readProperty($instance, string $property) |
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{ |
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static $reader; |
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if ($reader === null) { |
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$reader = function ($name) { |
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return $this->$name ?? null; |
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}; |
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} |
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$read = Closure::bind($reader, $instance, $instance); |
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return $read($property); |
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} |
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/** |
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* Creates and caches in memory reflection of the given class. |
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* |
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* @param string $className |
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* @return ReflectionClass |
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* @throws \ReflectionException |
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*/ |
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public static function reflectClass(string $className): ReflectionClass |
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{ |
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if (isset(self::$reflections[$className])) { |
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return self::$reflections[$className]; |
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} |
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return self::$reflections[$className] = new ReflectionClass($className); |
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} |
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/** |
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* Creates and caches in memory reflection of the given function. |
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* |
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* @param $function |
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* @return ReflectionFunction |
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* @throws \ReflectionException |
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*/ |
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public static function reflectFunction($function): ReflectionFunction |
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{ |
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if (!is_string($function)) { |
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return new ReflectionFunction($function); |
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} |
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if (isset(self::$reflections[$function])) { |
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return self::$reflections[$function]; |
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} |
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return self::$reflections[$function] = new ReflectionFunction($function); |
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} |
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/** |
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* Creates and caches in memory reflection of the given method. |
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* |
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* @param string $class |
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* @param string $method |
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* @return ReflectionMethod |
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* @throws \ReflectionException |
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*/ |
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public static function reflectMethod(string $class, string $method): ReflectionMethod |
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{ |
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$class = self::reflectClass($class); |
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return $class->getMethod($method); |
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} |
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} |
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igniphp /
reflection-api
