4 * Fluent interface for validating the contents of member variables.
5 * This should be immutable. See HTMLPurifier_ConfigSchema_Validator for
6 * use-cases. We name this an 'atom' because it's ONLY for validations that
7 * are independent and usually scalar.
9 class HTMLPurifier_ConfigSchema_ValidatorAtom
12 protected $context, $obj, $member, $contents;
14 public function __construct($context, $obj, $member) {
15 $this->context = $context;
17 $this->member = $member;
18 $this->contents =& $obj->$member;
21 public function assertIsString() {
22 if (!is_string($this->contents)) $this->error('must be a string');
26 public function assertIsBool() {
27 if (!is_bool($this->contents)) $this->error('must be a boolean');
31 public function assertIsArray() {
32 if (!is_array($this->contents)) $this->error('must be an array');
36 public function assertNotNull() {
37 if ($this->contents === null) $this->error('must not be null');
41 public function assertAlnum() {
42 $this->assertIsString();
43 if (!ctype_alnum($this->contents)) $this->error('must be alphanumeric');
47 public function assertNotEmpty() {
48 if (empty($this->contents)) $this->error('must not be empty');
52 public function assertIsLookup() {
53 $this->assertIsArray();
54 foreach ($this->contents as $v) {
55 if ($v !== true) $this->error('must be a lookup array');
60 protected function error($msg) {
61 throw new HTMLPurifier_ConfigSchema_Exception(ucfirst($this->member) . ' in ' . $this->context . ' ' . $msg);