public static Quaternion parse()

in commons-numbers-quaternion/src/main/java/org/apache/commons/numbers/quaternion/Quaternion.java [651:694]
42 lines of code
8 McCabe index (conditional complexity)

    public static Quaternion parse(String s) {
        final int startBracket = s.indexOf(FORMAT_START);
        if (startBracket != 0) {
            throw new QuaternionParsingException("Expected start string: " + FORMAT_START);
        }
        final int len = s.length();
        final int endBracket = s.indexOf(FORMAT_END);
        if (endBracket != len - 1) {
            throw new QuaternionParsingException("Expected end string: " + FORMAT_END);
        }
        final String[] elements = s.substring(1, s.length() - 1).split(FORMAT_SEP);
        if (elements.length != NUMBER_OF_PARTS) {
            throw new QuaternionParsingException("Incorrect number of parts: Expected 4 but was " +
                                                 elements.length +
                                                 " (separator is '" + FORMAT_SEP + "')");
        }

        final double a;
        try {
            a = Double.parseDouble(elements[0]);
        } catch (NumberFormatException ex) {
            throw new QuaternionParsingException("Could not parse scalar part" + elements[0], ex);
        }
        final double b;
        try {
            b = Double.parseDouble(elements[1]);
        } catch (NumberFormatException ex) {
            throw new QuaternionParsingException("Could not parse i part" + elements[1], ex);
        }
        final double c;
        try {
            c = Double.parseDouble(elements[2]);
        } catch (NumberFormatException ex) {
            throw new QuaternionParsingException("Could not parse j part" + elements[2], ex);
        }
        final double d;
        try {
            d = Double.parseDouble(elements[3]);
        } catch (NumberFormatException ex) {
            throw new QuaternionParsingException("Could not parse k part" + elements[3], ex);
        }

        return of(a, b, c, d);
    }