/** * Validates a HTMLPurifier_ConfigSchema_Interchange_Id object. * @param HTMLPurifier_ConfigSchema_Interchange_Id $id */ public function validateId($id) { $id_string = $id->toString(); $this->context[] = "id '{$id_string}'"; if (!$id instanceof HTMLPurifier_ConfigSchema_Interchange_Id) { // handled by InterchangeBuilder $this->error(false, 'is not an instance of HTMLPurifier_ConfigSchema_Interchange_Id'); } // keys are now unconstrained (we might want to narrow down to A-Za-z0-9.) // we probably should check that it has at least one namespace $this->with($id, 'key')->assertNotEmpty()->assertIsString(); // implicit assertIsString handled by InterchangeBuilder array_pop($this->context); }