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<?php |
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namespace Nyholm\Reflection; |
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use Webmozart\Assert\Assert; |
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/** |
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* Warning: This class should only be used with tests, fixtures or debug. |
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* |
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* @author Tobias Nyholm <[email protected]> |
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*/ |
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class Reflection |
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{ |
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/** |
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* Get a property of an object. |
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* |
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* @param object|string $objectOrClass |
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* @param string $propertyName |
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* |
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* @return mixed |
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* |
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* @throws \InvalidArgumentException |
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*/ |
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public static function getProperty($objectOrClass, $propertyName) |
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{ |
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return static::getAccessibleReflectionProperty($objectOrClass, $propertyName)->getValue($objectOrClass); |
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} |
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/** |
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* Set a property to an object. |
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* |
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* @param object|string $objectOrClass |
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* @param string $propertyName |
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* @param mixed $value |
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* |
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* @throws \InvalidArgumentException |
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*/ |
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public static function setProperty($objectOrClass, $propertyName, $value) |
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{ |
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static::getAccessibleReflectionProperty($objectOrClass, $propertyName)->setValue($objectOrClass, $value); |
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} |
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/** |
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* Invoke a method on a object and get the return values. |
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* |
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* @param object|string $objectOrClass |
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* @param string $methodName |
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* @param mixed ...$params |
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* |
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* @return mixed |
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* |
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* @throws \InvalidArgumentException |
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*/ |
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public static function invokeMethod() |
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{ |
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if (func_num_args() < 2) { |
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throw new \LogicException('The method Reflection::invokeMethod need at least two arguments.'); |
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} |
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$arguments = func_get_args(); |
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$objectOrClass = array_shift($arguments); |
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$methodName = array_shift($arguments); |
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Assert::string($methodName, 'Method name has to be a string. Variable of type "%s" was given.'); |
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if (is_string($objectOrClass)) { |
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Assert::classExists($objectOrClass, 'Could not find class "%s"'); |
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} else { |
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Assert::notInstanceOf($objectOrClass, '\stdClass', 'Can not get a method of \stdClass.'); |
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Assert::object($objectOrClass, 'Can not get a property of a non object. Variable of type "%s" was given.'); |
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} |
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$refl = new \ReflectionClass($objectOrClass); |
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if (!$refl->hasMethod($methodName)) { |
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throw new \LogicException(sprintf('The method %s::%s does not exist.', get_class($objectOrClass), $methodName)); |
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} |
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$method = $refl->getMethod($methodName); |
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$method->setAccessible(true); |
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// If it is a static call we should pass null as first parameter. |
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return $method->invokeArgs(is_string($objectOrClass) ? null : $objectOrClass, $arguments); |
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} |
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/** |
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* Get a reflection class that has this property. |
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* |
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* @param string $class |
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* @param string $propertyName |
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* |
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* @return \ReflectionClass|null |
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*/ |
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protected static function getReflectionClassWithProperty($class, $propertyName) |
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{ |
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Assert::string($class, 'First argument to Reflection::getReflectionClassWithProperty must be string. Variable of type "%s" was given.'); |
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Assert::classExists($class, 'Could not find class "%s"'); |
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$refl = new \ReflectionClass($class); |
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if ($refl->hasProperty($propertyName)) { |
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return $refl; |
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} |
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if (false === $parent = get_parent_class($class)) { |
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// No more parents |
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return; |
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} |
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return self::getReflectionClassWithProperty($parent, $propertyName); |
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} |
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/** |
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* Get an reflection property that you can access directly. |
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* |
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* @param object|string $objectOrClass |
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* @param string $propertyName |
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* |
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* @return \ReflectionProperty |
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* |
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* @throws \InvalidArgumentException |
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* @throws \LogicException if the property is not found on the object |
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*/ |
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protected static function getAccessibleReflectionProperty($objectOrClass, $propertyName) |
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{ |
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Assert::string($propertyName, 'Property name must be a string. Variable of type "%s" was given.'); |
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if (is_string($objectOrClass)) { |
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$class = $objectOrClass; |
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} else { |
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Assert::object($objectOrClass, 'Can not get a property of a non object. Variable of type "%s" was given.'); |
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Assert::notInstanceOf($objectOrClass, '\stdClass', 'Can not get a property of \stdClass.'); |
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$class = get_class($objectOrClass); |
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} |
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if (null === $refl = static::getReflectionClassWithProperty($class, $propertyName)) { |
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throw new \LogicException(sprintf('The property %s does not exist on %s or any of its parents.', $propertyName, $class)); |
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} |
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$property = $refl->getProperty($propertyName); |
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$property->setAccessible(true); |
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return $property; |
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} |
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} |
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Nyholm /
NSA
