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GuardUtils.php
01 <?php
02 /**
03 * Zend Framework (http://framework.zend.com/)
04 *
05 * @link http://github.com/zendframework/zf2 for the canonical source repository
06 * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
07 * @license http://framework.zend.com/license/new-bsd New BSD License
08 */
09
10 namespace Zend\Stdlib\Guard;
11
12 use Traversable;
13
14 /**
15 * Static guard helper class
16 *
17 * Bridges the gap for allowing refactoring until traits can be used by default.
18 *
19 * @deprecated
20 */
21 abstract class GuardUtils
22 {
23 const DEFAULT_EXCEPTION_CLASS = 'Zend\Stdlib\Exception\InvalidArgumentException';
24
25 /**
26 * Verifies that the data is an array or Traversable
27 *
28 * @param mixed $data the data to verify
29 * @param string $dataName the data name
30 * @param string $exceptionClass FQCN for the exception
31 * @throws \Exception
32 */
33 public static function guardForArrayOrTraversable(
34 $data,
35 $dataName = 'Argument',
36 $exceptionClass = self::DEFAULT_EXCEPTION_CLASS
37 ) {
38 if (!is_array($data) && !($data instanceof Traversable)) {
39 $message = sprintf(
40 '%s must be an array or Traversable, [%s] given',
41 $dataName,
42 is_object($data) ? get_class($data) : gettype($data)
43 );
44 throw new $exceptionClass($message);
45 }
46 }
47
48 /**
49 * Verify that the data is not empty
50 *
51 * @param mixed $data the data to verify
52 * @param string $dataName the data name
53 * @param string $exceptionClass FQCN for the exception
54 * @throws \Exception
55 */
56 public static function guardAgainstEmpty(
57 $data,
58 $dataName = 'Argument',
59 $exceptionClass = self::DEFAULT_EXCEPTION_CLASS
60 ) {
61 if (empty($data)) {
62 $message = sprintf('%s cannot be empty', $dataName);
63 throw new $exceptionClass($message);
64 }
65 }
66
67 /**
68 * Verify that the data is not null
69 *
70 * @param mixed $data the data to verify
71 * @param string $dataName the data name
72 * @param string $exceptionClass FQCN for the exception
73 * @throws \Exception
74 */
75 public static function guardAgainstNull(
76 $data,
77 $dataName = 'Argument',
78 $exceptionClass = self::DEFAULT_EXCEPTION_CLASS
79 ) {
80 if (null === $data) {
81 $message = sprintf('%s cannot be null', $dataName);
82 throw new $exceptionClass($message);
83 }
84 }
85 }
86