aleph1.co.uk Git - yaffs-website/blob - vendor/phpspec/prophecy/src/Prophecy/Doubler/ClassPatch/ThrowablePatch.php

   1 <?php
   2
   3 namespace Prophecy\Doubler\ClassPatch;
   4
   5 use Prophecy\Doubler\Generator\Node\ClassNode;
   6 use Prophecy\Exception\Doubler\ClassCreatorException;
   7
   8 class ThrowablePatch implements ClassPatchInterface
   9 {
  10     /**
  11      * Checks if patch supports specific class node.
  12      *
  13      * @param ClassNode $node
  14      * @return bool
  15      */
  16     public function supports(ClassNode $node)
  17     {
  18         return $this->implementsAThrowableInterface($node) && $this->doesNotExtendAThrowableClass($node);
  19     }
  20
  21     /**
  22      * @param ClassNode $node
  23      * @return bool
  24      */
  25     private function implementsAThrowableInterface(ClassNode $node)
  26     {
  27         foreach ($node->getInterfaces() as $type) {
  28             if (is_a($type, 'Throwable', true)) {
  29                 return true;
  30             }
  31         }
  32
  33         return false;
  34     }
  35
  36     /**
  37      * @param ClassNode $node
  38      * @return bool
  39      */
  40     private function doesNotExtendAThrowableClass(ClassNode $node)
  41     {
  42         return !is_a($node->getParentClass(), 'Throwable', true);
  43     }
  44
  45     /**
  46      * Applies patch to the specific class node.
  47      *
  48      * @param ClassNode $node
  49      *
  50      * @return void
  51      */
  52     public function apply(ClassNode $node)
  53     {
  54         $this->checkItCanBeDoubled($node);
  55         $this->setParentClassToException($node);
  56     }
  57
  58     private function checkItCanBeDoubled(ClassNode $node)
  59     {
  60         $className = $node->getParentClass();
  61         if ($className !== 'stdClass') {
  62             throw new ClassCreatorException(
  63                 sprintf(
  64                     'Cannot double concrete class %s as well as implement Traversable',
  65                     $className
  66                 ),
  67                 $node
  68             );
  69         }
  70     }
  71
  72     private function setParentClassToException(ClassNode $node)
  73     {
  74         $node->setParentClass('Exception');
  75
  76         $node->removeMethod('getMessage');
  77         $node->removeMethod('getCode');
  78         $node->removeMethod('getFile');
  79         $node->removeMethod('getLine');
  80         $node->removeMethod('getTrace');
  81         $node->removeMethod('getPrevious');
  82         $node->removeMethod('getNext');
  83         $node->removeMethod('getTraceAsString');
  84     }
  85
  86     /**
  87      * Returns patch priority, which determines when patch will be applied.
  88      *
  89      * @return int Priority number (higher - earlier)
  90      */
  91     public function getPriority()
  92     {
  93         return 100;
  94     }
  95 }