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   1  <?php
   2  
   3  declare(strict_types=1);
   4  
   5  namespace ProxyManager\ProxyGenerator;
   6  
   7  use ProxyManager\Exception\InvalidProxiedClassException;
   8  use ProxyManager\Generator\Util\ClassGeneratorUtils;
   9  use ProxyManager\Proxy\VirtualProxyInterface;
  10  use ProxyManager\ProxyGenerator\AccessInterceptor\MethodGenerator\MagicWakeup;
  11  use ProxyManager\ProxyGenerator\Assertion\CanProxyAssertion;
  12  use ProxyManager\ProxyGenerator\LazyLoading\MethodGenerator\StaticProxyConstructor;
  13  use ProxyManager\ProxyGenerator\LazyLoadingValueHolder\MethodGenerator\GetProxyInitializer;
  14  use ProxyManager\ProxyGenerator\LazyLoadingValueHolder\MethodGenerator\InitializeProxy;
  15  use ProxyManager\ProxyGenerator\LazyLoadingValueHolder\MethodGenerator\IsProxyInitialized;
  16  use ProxyManager\ProxyGenerator\LazyLoadingValueHolder\MethodGenerator\LazyLoadingMethodInterceptor;
  17  use ProxyManager\ProxyGenerator\LazyLoadingValueHolder\MethodGenerator\MagicClone;
  18  use ProxyManager\ProxyGenerator\LazyLoadingValueHolder\MethodGenerator\MagicGet;
  19  use ProxyManager\ProxyGenerator\LazyLoadingValueHolder\MethodGenerator\MagicIsset;
  20  use ProxyManager\ProxyGenerator\LazyLoadingValueHolder\MethodGenerator\MagicSet;
  21  use ProxyManager\ProxyGenerator\LazyLoadingValueHolder\MethodGenerator\MagicSleep;
  22  use ProxyManager\ProxyGenerator\LazyLoadingValueHolder\MethodGenerator\MagicUnset;
  23  use ProxyManager\ProxyGenerator\LazyLoadingValueHolder\MethodGenerator\SetProxyInitializer;
  24  use ProxyManager\ProxyGenerator\LazyLoadingValueHolder\PropertyGenerator\InitializerProperty;
  25  use ProxyManager\ProxyGenerator\LazyLoadingValueHolder\PropertyGenerator\ValueHolderProperty;
  26  use ProxyManager\ProxyGenerator\PropertyGenerator\PublicPropertiesMap;
  27  use ProxyManager\ProxyGenerator\Util\Properties;
  28  use ProxyManager\ProxyGenerator\Util\ProxiedMethodsFilter;
  29  use ProxyManager\ProxyGenerator\ValueHolder\MethodGenerator\Constructor;
  30  use ProxyManager\ProxyGenerator\ValueHolder\MethodGenerator\GetWrappedValueHolderValue;
  31  use ReflectionClass;
  32  use ReflectionMethod;
  33  use Zend\Code\Generator\ClassGenerator;
  34  use Zend\Code\Generator\MethodGenerator;
  35  use Zend\Code\Reflection\MethodReflection;
  36  
  37  /**
  38   * Generator for proxies implementing {@see \ProxyManager\Proxy\VirtualProxyInterface}
  39   *
  40   * {@inheritDoc}
  41   *
  42   * @author Marco Pivetta <ocramius@gmail.com>
  43   * @license MIT
  44   */
  45  class LazyLoadingValueHolderGenerator implements ProxyGeneratorInterface
  46  {
  47      /**
  48       * {@inheritDoc}
  49       *
  50       * @throws InvalidProxiedClassException
  51       * @throws \Zend\Code\Generator\Exception\InvalidArgumentException
  52       * @throws \InvalidArgumentException
  53       */
  54      public function generate(ReflectionClass $originalClass, ClassGenerator $classGenerator)
  55      {
  56          CanProxyAssertion::assertClassCanBeProxied($originalClass);
  57  
  58          $interfaces          = [VirtualProxyInterface::class];
  59          $publicProperties    = new PublicPropertiesMap(Properties::fromReflectionClass($originalClass));
  60  
  61          if ($originalClass->isInterface()) {
  62              $interfaces[] = $originalClass->getName();
  63          } else {
  64              $classGenerator->setExtendedClass($originalClass->getName());
  65          }
  66  
  67          $classGenerator->setImplementedInterfaces($interfaces);
  68          $classGenerator->addPropertyFromGenerator($valueHolder = new ValueHolderProperty());
  69          $classGenerator->addPropertyFromGenerator($initializer = new InitializerProperty());
  70          $classGenerator->addPropertyFromGenerator($publicProperties);
  71  
  72          array_map(
  73              function (MethodGenerator $generatedMethod) use ($originalClass, $classGenerator) {
  74                  ClassGeneratorUtils::addMethodIfNotFinal($originalClass, $classGenerator, $generatedMethod);
  75              },
  76              array_merge(
  77                  array_map(
  78                      $this->buildLazyLoadingMethodInterceptor($initializer, $valueHolder),
  79                      ProxiedMethodsFilter::getProxiedMethods($originalClass)
  80                  ),
  81                  [
  82                      new StaticProxyConstructor($initializer, Properties::fromReflectionClass($originalClass)),
  83                      Constructor::generateMethod($originalClass, $valueHolder),
  84                      new MagicGet($originalClass, $initializer, $valueHolder, $publicProperties),
  85                      new MagicSet($originalClass, $initializer, $valueHolder, $publicProperties),
  86                      new MagicIsset($originalClass, $initializer, $valueHolder, $publicProperties),
  87                      new MagicUnset($originalClass, $initializer, $valueHolder, $publicProperties),
  88                      new MagicClone($originalClass, $initializer, $valueHolder),
  89                      new MagicSleep($originalClass, $initializer, $valueHolder),
  90                      new MagicWakeup($originalClass),
  91                      new SetProxyInitializer($initializer),
  92                      new GetProxyInitializer($initializer),
  93                      new InitializeProxy($initializer, $valueHolder),
  94                      new IsProxyInitialized($valueHolder),
  95                      new GetWrappedValueHolderValue($valueHolder),
  96                  ]
  97              )
  98          );
  99      }
 100  
 101      private function buildLazyLoadingMethodInterceptor(
 102          InitializerProperty $initializer,
 103          ValueHolderProperty $valueHolder
 104      ) : callable {
 105          return function (ReflectionMethod $method) use ($initializer, $valueHolder) : LazyLoadingMethodInterceptor {
 106              return LazyLoadingMethodInterceptor::generateMethod(
 107                  new MethodReflection($method->getDeclaringClass()->getName(), $method->getName()),
 108                  $initializer,
 109                  $valueHolder
 110              );
 111          };
 112      }
 113  }