/**
* validates a literal offset value based on defined TYPE rules.
*
* @param string $offset name of offset to validate against
* @param mixed $value the value to test
* @throws ModelableException if offset does not exist
* @return bool true if validation succeeds; false otherwise
*/
protected function _literalOffsetValid(string $offset, $value)
{
if (!isset($this->_prop[$offset])) {
$context = ['tr' => ['offset' => $offset]];
throw new ModelableException(ModelableException::INVALID_LITERAL, $context);
}
$type = $this::TYPE[$offset] ?? null;
return $value === null || $type === null || gettype($value) === $type || $value instanceof $type || is_scalar($value) && Vars::is_regex($type) && preg_match($type, (string) $value);
}
