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/vendor/ocramius/proxy-manager/src/ProxyManager/ProxyGenerator/LazyLoadingGhost/MethodGenerator/ -> MagicIsset.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\LazyLoadingGhost\MethodGenerator;
  22  
  23  use ProxyManager\Generator\MagicMethodGenerator;
  24  use Zend\Code\Generator\ParameterGenerator;
  25  use ProxyManager\ProxyGenerator\LazyLoadingGhost\PropertyGenerator\PrivatePropertiesMap;
  26  use ProxyManager\ProxyGenerator\LazyLoadingGhost\PropertyGenerator\ProtectedPropertiesMap;
  27  use ProxyManager\ProxyGenerator\PropertyGenerator\PublicPropertiesMap;
  28  use ProxyManager\ProxyGenerator\Util\PublicScopeSimulator;
  29  use ReflectionClass;
  30  use Zend\Code\Generator\MethodGenerator;
  31  use Zend\Code\Generator\PropertyGenerator;
  32  
  33  /**
  34   * Magic `__isset` method for lazy loading ghost objects
  35   *
  36   * @author Marco Pivetta <ocramius@gmail.com>
  37   * @license MIT
  38   */
  39  class MagicIsset extends MagicMethodGenerator
  40  {
  41      /**
  42       * @var string
  43       */
  44      private $callParentTemplate = <<<'PHP'
  45  %s
  46  
  47  if (isset(self::$%s[$name])) {
  48      return isset($this->$name);
  49  }
  50  
  51  if (isset(self::$%s[$name])) {
  52      // check protected property access via compatible class
  53      $callers      = debug_backtrace(\DEBUG_BACKTRACE_PROVIDE_OBJECT, 2);
  54      $caller       = isset($callers[1]) ? $callers[1] : [];
  55      $object       = isset($caller['object']) ? $caller['object'] : '';
  56      $expectedType = self::$%s[$name];
  57  
  58      if ($object instanceof $expectedType) {
  59          return isset($this->$name);
  60      }
  61  
  62      $class = isset($caller['class']) ? $caller['class'] : '';
  63  
  64      if ($class === $expectedType || is_subclass_of($class, $expectedType)) {
  65          return isset($this->$name);
  66      }
  67  } else {
  68      // check private property access via same class
  69      $callers = debug_backtrace(\DEBUG_BACKTRACE_PROVIDE_OBJECT, 2);
  70      $caller  = isset($callers[1]) ? $callers[1] : [];
  71      $class   = isset($caller['class']) ? $caller['class'] : '';
  72  
  73      static $accessorCache = [];
  74  
  75      if (isset(self::$%s[$name][$class])) {
  76          $cacheKey = $class . '#' . $name;
  77          $accessor = isset($accessorCache[$cacheKey])
  78              ? $accessorCache[$cacheKey]
  79              : $accessorCache[$cacheKey] = \Closure::bind(function ($instance) use ($name) {
  80                  return isset($instance->$name);
  81              }, null, $class);
  82  
  83          return $accessor($this);
  84      }
  85  
  86      if ('ReflectionProperty' === $class) {
  87          $tmpClass = key(self::$%s[$name]);
  88          $cacheKey = $tmpClass . '#' . $name;
  89          $accessor = isset($accessorCache[$cacheKey])
  90              ? $accessorCache[$cacheKey]
  91              : $accessorCache[$cacheKey] = \Closure::bind(function ($instance) use ($name) {
  92                  return isset($instance->$name);
  93              }, null, $tmpClass);
  94  
  95          return $accessor($this);
  96      }
  97  }
  98  
  99  %s
 100  PHP;
 101  
 102      /**
 103       * @param ReflectionClass        $originalClass
 104       * @param PropertyGenerator      $initializerProperty
 105       * @param MethodGenerator        $callInitializer
 106       * @param PublicPropertiesMap    $publicProperties
 107       * @param ProtectedPropertiesMap $protectedProperties
 108       * @param PrivatePropertiesMap   $privateProperties
 109       *
 110       * @throws \Zend\Code\Generator\Exception\InvalidArgumentException
 111       * @throws \InvalidArgumentException
 112       */
 113      public function __construct(
 114          ReflectionClass $originalClass,
 115          PropertyGenerator $initializerProperty,
 116          MethodGenerator $callInitializer,
 117          PublicPropertiesMap $publicProperties,
 118          ProtectedPropertiesMap $protectedProperties,
 119          PrivatePropertiesMap $privateProperties
 120      ) {
 121          parent::__construct($originalClass, '__isset', [new ParameterGenerator('name')]);
 122  
 123          $override = $originalClass->hasMethod('__isset');
 124  
 125          $this->setDocBlock(($override ? "{@inheritDoc}\n" : '') . '@param string $name');
 126  
 127          $parentAccess = 'return parent::__isset($name);';
 128  
 129          if (! $override) {
 130              $parentAccess = PublicScopeSimulator::getPublicAccessSimulationCode(
 131                  PublicScopeSimulator::OPERATION_ISSET,
 132                  'name'
 133              );
 134          }
 135  
 136          $this->setBody(sprintf(
 137              $this->callParentTemplate,
 138              '$this->' . $initializerProperty->getName() . ' && $this->' . $callInitializer->getName()
 139              . '(\'__isset\', array(\'name\' => $name));',
 140              $publicProperties->getName(),
 141              $protectedProperties->getName(),
 142              $protectedProperties->getName(),
 143              $privateProperties->getName(),
 144              $privateProperties->getName(),
 145              $parentAccess
 146          ));
 147      }
 148  }


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