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   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  namespace ProxyManager\ProxyGenerator\LazyLoadingValueHolder\MethodGenerator;
  20  
  21  use ProxyManager\Generator\MethodGenerator;
  22  use Zend\Code\Generator\PropertyGenerator;
  23  use Zend\Code\Reflection\MethodReflection;
  24  
  25  /**
  26   * Method decorator for lazy loading value holder objects
  27   *
  28   * @author Marco Pivetta <ocramius@gmail.com>
  29   * @license MIT
  30   */
  31  class LazyLoadingMethodInterceptor extends MethodGenerator
  32  {
  33      /**
  34       * @param \Zend\Code\Reflection\MethodReflection $originalMethod
  35       * @param \Zend\Code\Generator\PropertyGenerator $initializerProperty
  36       * @param \Zend\Code\Generator\PropertyGenerator $valueHolderProperty
  37       *
  38       * @return LazyLoadingMethodInterceptor|static
  39       */
  40      public static function generateMethod(
  41          MethodReflection $originalMethod,
  42          PropertyGenerator $initializerProperty,
  43          PropertyGenerator $valueHolderProperty
  44      ) {
  45          /* @var $method self */
  46          $method            = static::fromReflection($originalMethod);
  47          $initializerName   = $initializerProperty->getName();
  48          $valueHolderName   = $valueHolderProperty->getName();
  49          $parameters        = $originalMethod->getParameters();
  50          $methodName        = $originalMethod->getName();
  51          $initializerParams = array();
  52          $forwardedParams   = array();
  53  
  54          foreach ($parameters as $parameter) {
  55              $parameterName       = $parameter->getName();
  56              $initializerParams[] = var_export($parameterName, true) . ' => $' . $parameterName;
  57              $forwardedParams[]   = '$' . $parameterName;
  58          }
  59  
  60          $method->setBody(
  61              '$this->' . $initializerName
  62              . ' && $this->' . $initializerName
  63              . '->__invoke($this->' . $valueHolderName . ', $this, ' . var_export($methodName, true)
  64              . ', array(' . implode(', ', $initializerParams) .  '), $this->' . $initializerName . ");\n\n"
  65              . 'return $this->' . $valueHolderName . '->'
  66              . $methodName . '(' . implode(', ', $forwardedParams) . ');'
  67          );
  68          $method->setDocblock('{@inheritDoc}');
  69  
  70          return $method;
  71      }
  72  }