/**
* @param $value
* @param AbstractType $abstractType
* @return Type
* @throws \Exception
*/
public static function getTypeOf($value, AbstractType $abstractType)
{
$possibleTypes = $abstractType->getPossibleTypes();
for ($i = 0; $i < count($possibleTypes); $i++) {
/** @var ObjectType $type */
$type = $possibleTypes[$i];
$isTypeOf = $type->isTypeOf($value);
if ($isTypeOf === null) {
// TODO: move this to a JS impl specific type system validation step
// so the error can be found before execution.
throw new \Exception('Non-Object Type ' . $abstractType->name . ' does not implement ' . 'resolveType and Object Type ' . $type->name . ' does not implement ' . 'isTypeOf. There is no way to determine if a value is of this type.');
}
if ($isTypeOf) {
return $type;
}
}
return null;
}
