Chris@14: <?php declare(strict_types = 1);
Chris@14: namespace TheSeer\Tokenizer;
Chris@14: 
Chris@14: class NamespaceUri {
Chris@14: 
Chris@14:     /** @var string */
Chris@14:     private $value;
Chris@14: 
Chris@14:     /**
Chris@14:      * @param string $value
Chris@14:      */
Chris@14:     public function __construct(string $value) {
Chris@14:         $this->ensureValidUri($value);
Chris@14:         $this->value = $value;
Chris@14:     }
Chris@14: 
Chris@14:     public function asString(): string {
Chris@14:         return $this->value;
Chris@14:     }
Chris@14: 
Chris@14:     private function ensureValidUri($value) {
Chris@14:         if (strpos($value, ':') === false) {
Chris@14:             throw new NamespaceUriException(
Chris@14:                 sprintf("Namespace URI '%s' must contain at least one colon", $value)
Chris@14:             );
Chris@14:         }
Chris@14:     }
Chris@14: }