/**
* Set the name of the math constant.
*
* @param string $name The name of the math constant.
* @throws InvalidArgumentException If $name is not a valid QTI math constant name.
*/
public function setName($name)
{
if (in_array($name, MathEnumeration::asArray())) {
$this->name = $name;
} else {
$msg = "{$name} is not a valid QTI Math constant.";
throw new InvalidArgumentException($msg);
}
}
/**
* Unmarshall a DOMElement object corresponding to a QTI mathConstant element.
*
* @param \DOMElement $element A DOMElement object.
* @return \qtism\data\QtiComponent A MathConstant object.
* @throws \UnmarshallingException If the mandatory attribute 'name' is missing.
*/
protected function unmarshall(DOMElement $element)
{
if (($name = static::getDOMElementAttributeAs($element, 'name')) !== null) {
if (($cst = MathEnumeration::getConstantByName($name)) !== false) {
$object = new MathConstant($cst);
return $object;
} else {
$msg = "'{$name}' is not a valid value for the attribute 'name' from element '" . $element->localName . "'.";
throw new UnmarshallingException($msg, $element);
}
} else {
$msg = "The mandatory attribute 'name' is missing from element '" . $element->localName . "'.";
throw new UnmarshallingException($msg, $element);
}
}
