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<?php namespace BuildR\TestTools\Traits; |
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use BuildR\Foundation\Exception\Exception; |
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use ReflectionClass; |
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use ReflectionObject; |
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/** |
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* Common trait that contains helper function to working with PHP reflection API |
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* |
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* BuildR PHP Framework |
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* |
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* @author Zoltán Borsos <[email protected]> |
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* @package TestTools |
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* @subpackage Traits |
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* |
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* @copyright Copyright 2016, Zoltán Borsos. |
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* @license https://github.com/BuildrPHP/Test-Tools/blob/master/LICENSE.md |
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* @link https://github.com/BuildrPHP/Test-Tools |
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*/ |
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trait ReflectionUtilities { |
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/** |
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* Read a property value from a given class or concrete object. This function can handle automatic creation |
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* of new instances of the given class. |
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* |
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* If no concrete object provided and the 'callConstructor' option is FALSE reads the property default value |
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* from the class. |
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* |
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* If a concrete object is provided returns the property value from the given concrete object. |
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* |
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* If the 'callConstructor' is TRUE and concrete object is not provided this method try to instantiate a |
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* new object from thi given class using the 'constructorParams' option. |
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* |
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* options: |
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* 'callConstructor' => bool |
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* 'constructorParams' => array (key is variable name, value is the value of the variable) |
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* |
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* @param string $className The FQCN |
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* @param string $propertyName The property name |
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* @param object|NULL $concreteClass Optionally concrete class |
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* @param array $options Options defined as an array |
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* |
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* @return NULL|mixed |
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*/ |
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public function getPropertyValue($className, $propertyName, $concreteClass = NULL, $options = []) { |
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$callConstructor = (isset($options['callConstructor'])) ? (bool) $options['callConstructor'] : FALSE; |
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$reflector = new ReflectionClass($className); |
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//This is a default property |
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if($concreteClass === NULL && $callConstructor === FALSE) { |
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$properties = $reflector->getDefaultProperties(); |
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return (isset($properties[$propertyName])) ? $properties[$propertyName] : NULL; |
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} |
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//Return NULL if this class not has the given property |
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if(!$reflector->hasProperty($propertyName)) { |
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return NULL; |
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} |
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//Get reflector for property and set it accessible |
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$propertyReflector = $reflector->getProperty($propertyName); |
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$propertyReflector->setAccessible(TRUE); |
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//If we give a concrete class returns the value from this class |
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if($concreteClass !== NULL) { |
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return $propertyReflector->getValue($concreteClass); |
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} |
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//Needs to call the class constructor |
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if($callConstructor === TRUE) { |
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$constructorParams = (isset($options['constructorParams'])) ? (array) $options['constructorParams'] : []; |
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return $propertyReflector->getValue($reflector->newInstanceArgs($constructorParams)); |
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} |
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//This should never happen |
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//@codeCoverageIgnoreStart |
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return NULL; |
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//@codeCoverageIgnoreEnd |
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} |
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/** |
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* Returns a static property from the given class. You can pass this function an object or |
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* a FQCN as string. |
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* |
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* @param object|string $object A concrete class or a FQCN |
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* @param string $propertyName The property name |
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* |
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* @return NULL|mixed |
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*/ |
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public function getStaticPropertyValue($object, $propertyName) { |
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$className = $object; |
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if(is_object($className)) { |
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$className = get_class($object); |
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} |
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$reflector = new ReflectionClass($className); |
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$properties = $reflector->getStaticProperties(); |
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return (isset($properties[$propertyName])) ? $properties[$propertyName] : NULL; |
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} |
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/** |
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* Set a property value on the given object. If the property is not found in the given object |
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* an Exception will be thrown. |
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* |
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* @param object $object A concrete object |
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* @param string $property The property name |
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* @param mixed $value The property new value |
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* |
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* @return bool |
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* |
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* @throws \BuildR\Foundation\Exception\Exception |
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*/ |
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public function setProperty($object, $property, $value) { |
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$objectReflector = new ReflectionObject($object); |
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if(!$objectReflector->hasProperty($property)) { |
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throw new Exception('Property cannot be set! This property not exist inside the given object!'); |
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} |
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$propertyReflector = $objectReflector->getProperty($property); |
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$propertyReflector->setAccessible(TRUE); |
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$propertyReflector->setValue($object, $value); |
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return TRUE; |
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} |
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/** |
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* @param $className |
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* @param $methodName |
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* @param null $concreteClass |
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* @param array $options |
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* |
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* options: |
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* 'callConstructor' => bool |
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* 'constructorParams' => array (key is variable name, value is the value of the variable) |
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* 'methodParams' => array (key is variable name, value is the value of the variable) |
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* |
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* @return mixed |
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* |
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* @throws \BuildR\Foundation\Exception\Exception |
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*/ |
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public function invokeMethod($className, $methodName, $concreteClass = NULL, array $options = []) { |
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$callClassConstructor = (isset($options['callConstructor'])) ? (bool) $options['callConstructor'] : FALSE; |
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$methodParams = (isset($options['methodParams'])) ? (array) $options['methodParams'] : []; |
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$objectReflector = new ReflectionClass($className); |
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if(!$objectReflector->hasMethod($methodName)) { |
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throw new Exception('Cannot invoke method! Method not found!'); |
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} |
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$methodReflector = $objectReflector->getMethod($methodName); |
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$methodReflector->setAccessible(TRUE); |
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//If this is a static method we simply call it without object creation |
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if($methodReflector->isStatic()) { |
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return $methodReflector->invokeArgs(NULL, $methodParams); |
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} |
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//If concrete is given |
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if($concreteClass !== NULL) { |
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return $methodReflector->invokeArgs($concreteClass, $methodParams); |
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} |
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$calledObject = $objectReflector->newInstanceWithoutConstructor(); |
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if($callClassConstructor === TRUE) { |
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$constructorParams = (isset($options['constructorParams'])) ? (array) $options['constructorParams'] : []; |
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$calledObject = $objectReflector->newInstanceArgs($constructorParams); |
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} |
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return $methodReflector->invokeArgs($calledObject, $methodParams); |
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} |
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} |
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