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   1  <?php
   2  
   3  namespace GuzzleHttp\Psr7;
   4  
   5  use Psr\Http\Message\StreamInterface;
   6  
   7  /**
   8   * Stream decorator that prevents a stream from being seeked.
   9   *
  10   * @final
  11   */
  12  class NoSeekStream implements StreamInterface
  13  {
  14      use StreamDecoratorTrait;
  15  
  16      public function seek($offset, $whence = SEEK_SET)
  17      {
  18          throw new \RuntimeException('Cannot seek a NoSeekStream');
  19      }
  20  
  21      public function isSeekable()
  22      {
  23          return false;
  24      }
  25  }