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/vendor/ocramius/proxy-manager/src/ProxyManager/ProxyGenerator/ -> NullObjectGenerator.php (source)

   1  <?php
   2  /*
   3   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   4   * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   5   * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
   6   * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
   7   * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   8   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   9   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  10   * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  11   * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  12   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  13   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  14   *
  15   * This software consists of voluntary contributions made by many individuals
  16   * and is licensed under the MIT license.
  17   */
  18  
  19  declare(strict_types=1);
  20  
  21  namespace ProxyManager\ProxyGenerator;
  22  
  23  use ProxyManager\Exception\InvalidProxiedClassException;
  24  use ProxyManager\Generator\Util\ClassGeneratorUtils;
  25  use ProxyManager\Proxy\NullObjectInterface;
  26  use ProxyManager\ProxyGenerator\Assertion\CanProxyAssertion;
  27  use ProxyManager\ProxyGenerator\NullObject\MethodGenerator\NullObjectMethodInterceptor;
  28  use ProxyManager\ProxyGenerator\NullObject\MethodGenerator\StaticProxyConstructor;
  29  use ProxyManager\ProxyGenerator\Util\ProxiedMethodsFilter;
  30  use ReflectionClass;
  31  use Zend\Code\Generator\ClassGenerator;
  32  use Zend\Code\Reflection\MethodReflection;
  33  
  34  /**
  35   * Generator for proxies implementing {@see \ProxyManager\Proxy\NullObjectInterface}
  36   *
  37   * {@inheritDoc}
  38   *
  39   * @author Vincent Blanchon <blanchon.vincent@gmail.com>
  40   * @license MIT
  41   */
  42  class NullObjectGenerator implements ProxyGeneratorInterface
  43  {
  44      /**
  45       * {@inheritDoc}
  46       *
  47       * @throws InvalidProxiedClassException
  48       * @throws \Zend\Code\Generator\Exception\InvalidArgumentException
  49       */
  50      public function generate(ReflectionClass $originalClass, ClassGenerator $classGenerator)
  51      {
  52          CanProxyAssertion::assertClassCanBeProxied($originalClass);
  53  
  54          $interfaces = [NullObjectInterface::class];
  55  
  56          if ($originalClass->isInterface()) {
  57              $interfaces[] = $originalClass->getName();
  58          } else {
  59              $classGenerator->setExtendedClass($originalClass->getName());
  60          }
  61  
  62          $classGenerator->setImplementedInterfaces($interfaces);
  63  
  64          foreach (ProxiedMethodsFilter::getProxiedMethods($originalClass, []) as $method) {
  65              $classGenerator->addMethodFromGenerator(
  66                  NullObjectMethodInterceptor::generateMethod(
  67                      new MethodReflection($method->getDeclaringClass()->getName(), $method->getName())
  68                  )
  69              );
  70          }
  71  
  72          ClassGeneratorUtils::addMethodIfNotFinal(
  73              $originalClass,
  74              $classGenerator,
  75              new StaticProxyConstructor($originalClass)
  76          );
  77      }
  78  }


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