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<?php |
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/** |
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* Fwk |
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* |
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* Copyright (c) 2011-2012, Julien Ballestracci <[email protected]>. |
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* All rights reserved. |
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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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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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* POSSIBILITY OF SUCH DAMAGE. |
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* |
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* PHP Version 5.3 |
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* |
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* @category DependencyInjection |
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* @package Fwk\Di |
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* @author Julien Ballestracci <[email protected]> |
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* @copyright 2011-2014 Julien Ballestracci <[email protected]> |
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* @license http://www.opensource.org/licenses/bsd-license.php BSD License |
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* @link http://www.nitronet.org/fwk |
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*/ |
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namespace Fwk\Di; |
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use Fwk\Di\Exceptions\InvalidClassDefinition; |
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/** |
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* ClassDefinition |
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* |
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* Represents a Definition returning an instance of some class. |
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* |
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* @category Definition |
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* @package Fwk\Di |
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* @author Julien Ballestracci <[email protected]> |
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* @license http://www.opensource.org/licenses/bsd-license.php BSD License |
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* @link http://www.nitronet.org/fwk |
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*/ |
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class ClassDefinition extends AbstractDefinition implements Invokable |
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{ |
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/** |
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* Name of the class to be instanciated |
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* @var string |
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*/ |
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protected $className; |
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/** |
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* List of class' methods to be called after instanciation |
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* @var array<string> |
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*/ |
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protected $methodCalls = array(); |
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/** |
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* Constructor |
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* |
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* @param string $className Name of the class to be instanciated |
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* @param array<mixed> $arguments List of (constructor) arguments |
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* |
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* @return void |
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*/ |
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public function __construct($className, array $arguments = array()) |
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{ |
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$this->className = $className; |
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$this->arguments = $arguments; |
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} |
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/** |
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* Instanciates $this->className and return the instance. |
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* |
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* @param Container $container The Di Container |
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* @param null|string $name Name of the current definition (if any) |
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* |
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* @return object |
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* @throws Exceptions\InvalidClassDefinition |
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*/ |
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public function invoke(Container $container, $name = null) |
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{ |
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if ($this->className instanceof Invokable) { |
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try { |
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$this->className = $this->className->invoke($container, $name); |
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} catch(Exception $exp) { |
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throw new InvalidClassDefinition($this->className, $name, $exp); |
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} |
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} |
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if (!is_string($this->className)) { |
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throw new InvalidClassDefinition( |
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'???', |
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new \InvalidArgumentException( |
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sprintf( |
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'Classname must be a string or a Fwk\Di\Reference ' . |
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'instance (' . (is_object($this->className) |
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? get_class($this->className) |
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: get_type($this->className) |
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) . ' given)' |
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) |
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) |
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); |
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} |
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$instance = $this->newInstance($container, $name); |
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$this->executeMethodCalls($instance, $container, $name); |
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return $instance; |
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} |
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/** |
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* Executes registered methods (in the order they were added) |
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* |
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* @param object $instance The class instance |
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* @param Container $container The Di Container |
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* @param null|string $definition Name of the current definition |
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* |
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* @return void |
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* @throws Exceptions\InvalidClassDefinition |
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*/ |
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protected function executeMethodCalls($instance, Container $container, |
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$definition = null |
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) { |
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foreach ($this->methodCalls as $methodCall) { |
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$callable = $methodCall->getCallable(); |
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if (is_string($callable)) { |
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$callable = $container->propertizeString($callable); |
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} |
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if (!is_callable($callable)) { |
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$callable = array($instance, $callable); |
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} |
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$methodCall->setCallable($callable); |
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$methodCall->invoke($container, $definition); |
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$methodCall->setCallable($callable); |
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} |
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} |
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/** |
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* Instanciates the class ($this->className) |
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* |
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* @param Container $container The Di Container |
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* @param null|string $definition Name of the current definition (if any) |
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* |
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* @return object |
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* @throws Exceptions\ClassNotFound |
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* @throws Exceptions\InvalidClassDefinition |
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*/ |
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protected function newInstance(Container $container, $definition = null) |
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{ |
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if (is_string($this->className) && strpos($this->className, ':') >= 0) { |
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$this->className = $container->propertizeString($this->className); |
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} |
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if (!class_exists($this->className, true)) { |
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throw new Exceptions\ClassNotFound($this->className); |
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} |
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$reflect = new \ReflectionClass($this->className); |
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if (null !== $reflect->getConstructor()) { |
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$args = array(); |
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try { |
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$args = $this->getConstructorArguments($container, $definition); |
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} catch(Exception $exp) { |
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throw new InvalidClassDefinition( |
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$this->className, |
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$definition, |
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$exp |
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); |
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} |
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$return = $reflect->newInstanceArgs($args); |
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} else { |
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$return = new $this->className(); |
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} |
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return $return; |
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} |
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/** |
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* Returns the Class name |
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* |
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* @return string |
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*/ |
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public function getClassName() |
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{ |
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return $this->className; |
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} |
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/** |
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* Defines the Class name |
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* |
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* @param string $className The class name |
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* |
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* @return void |
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*/ |
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public function setClassName($className) |
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{ |
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$this->className = $className; |
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} |
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/** |
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* Adds a method to be called right after the class was instanciated |
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* |
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* @param string $methodName The name of the method to be called |
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* @param array<mixed> $arguments List of arguments (optional) |
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* |
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* @return ClassDefinition |
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*/ |
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public function addMethodCall($methodName, array $arguments = array()) |
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{ |
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$this->methodCalls[] = new CallableDefinition( |
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$methodName, |
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$arguments |
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); |
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return $this; |
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} |
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/** |
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* Removes a call to a specified method |
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* |
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* @param string $methodName The method name |
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* |
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* @return ClassDefinition |
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*/ |
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public function removeMethodClass($methodName) |
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{ |
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$this->methodCalls = array_filter( |
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$this->methodCalls, |
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function ($call) use ($methodName) { |
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return $methodName !== $call->getCallable(); |
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} |
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); |
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return $this; |
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} |
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} |
Adding a
@return
annotation to a constructor is not recommended, since a constructor does not have a meaningful return value.Please refer to the PHP core documentation on constructors.