public static function tokenize($data, array $options = []) {
		$options += ['separator' => ',', 'leftBound' => '(', 'rightBound' => ')'];

		if (!$data || is_array($data)) {
			return $data;
		}

		$depth = 0;
		$offset = 0;
		$buffer = '';
		$results = [];
		$length = strlen($data);
		$open = false;

		while ($offset <= $length) {
			$tmpOffset = -1;
			$offsets = [
				strpos($data, $options['separator'], $offset),
				strpos($data, $options['leftBound'], $offset),
				strpos($data, $options['rightBound'], $offset)
			];

			for ($i = 0; $i < 3; $i++) {
				if ($offsets[$i] !== false && ($offsets[$i] < $tmpOffset || $tmpOffset === -1)) {
					$tmpOffset = $offsets[$i];
				}
			}

			if ($tmpOffset === -1) {
				$results[] = $buffer . substr($data, $offset);
				$offset = $length + 1;
				continue;
			}
			$buffer .= substr($data, $offset, ($tmpOffset - $offset));

			if ($data[$tmpOffset] === $options['separator'] && $depth === 0) {
				$results[] = $buffer;
				$buffer = '';
			} else {
				$buffer .= $data[$tmpOffset];
			}

			if ($options['leftBound'] !== $options['rightBound']) {
				if ($data[$tmpOffset] === $options['leftBound']) {
					$depth++;
				}
				if ($data[$tmpOffset] === $options['rightBound']) {
					$depth--;
				}
				$offset = ++$tmpOffset;
				continue;
			}

			if ($data[$tmpOffset] === $options['leftBound']) {
				($open) ? $depth-- : $depth++;
				$open = !$open;
			}
			$offset = ++$tmpOffset;
		}

		if (!$results && $buffer) {
			$results[] = $buffer;
		}
		return $results ? array_map('trim', $results) : [];
	}