public static function breakUp($expressie)
{
$parts = array_reverse(str_split($expressie));
$expressions = [];
$number = false;
while (!empty($parts)) {
$part = array_pop($parts);
switch ($part) {
case preg_match('/[0-9.]/', $part) ? true : false:
if (!$number) {
$expressions[] = $number = new Number();
}
$number->add($part);
break;
case preg_match('/[+-\\/*]/', $part) ? true : false:
$expressions[] = SolverFactory::buildSolver($part);
break;
case preg_match('/[\\[\\]]/', $part) ? true : false:
$expressions[] = new Bracket();
break;
default:
$number = false;
}
}
return $expressions;
}
