1: <?php
 2: /**
 3:  * Hard type support
 4:  * For when you absolutely want to know what you are getting
 5:  *
 6:  * @author Ashley Kitson <akitson@zf4.biz>
 7:  * @copyright Ashley Kitson, UK, 2014
 8:  * @licence GPL V3 or later : http://www.gnu.org/licenses/gpl.html
 9:  */
10: 
11: namespace chippyash\Type\Number;
12: 
13: use chippyash\Type\Exceptions\InvalidTypeException;
14: 
15: /**
16:  * Natural Integer Type
17:  */
18: class NaturalIntType extends IntType
19: {
20: 
21:     /**
22:      * Negates the number
23:      *
24:      * @throws \BadMethodCallException
25:      */
26:     public function negate()
27:     {
28:         throw new \BadMethodCallException('Negate not supported for Natural Int Types');
29:     }
30: 
31:     /**
32:      * Return correctly typed value for this type
33:      *
34:      * @param mixed $value
35:      *
36:      * @return int
37:      *
38:      * @throws InvalidTypeException
39:      */
40:     protected function typeOf($value)
41:     {
42:         $val = intval($value);
43:         if ($val > 0) {
44:             return $val;
45:         } else {
46:             throw new InvalidTypeException("{$val} < 1 for natural integer type");
47:         }
48:     }
49: }
50: