public static T parseNumber()

in dubbo-rpc-extensions/dubbo-rpc-rest/src/main/java/org/apache/dubbo/rpc/protocol/rest/util/NumberUtils.java [27:52]

• 25 lines of code
• 21 McCabe index (conditional complexity)

    public static <T> T parseNumber(String text, Class<T> targetClass) {
        Assert.notNull(text, "Text must not be null");
        Assert.notNull(targetClass, "Target class must not be null");
        String trimmed = trimAllWhitespace(text);

        if (Byte.class == targetClass || byte.class == targetClass) {
            return (T) (isHexNumber(trimmed) ? Byte.decode(trimmed) : Byte.valueOf(trimmed));
        } else if (Short.class == targetClass || short.class == targetClass) {
            return (T) (isHexNumber(trimmed) ? Short.decode(trimmed) : Short.valueOf(trimmed));
        } else if (Integer.class == targetClass || int.class == targetClass) {
            return (T) (isHexNumber(trimmed) ? Integer.decode(trimmed) : Integer.valueOf(trimmed));
        } else if (Long.class == targetClass || long.class == targetClass) {
            return (T) (isHexNumber(trimmed) ? Long.decode(trimmed) : Long.valueOf(trimmed));
        } else if (BigInteger.class == targetClass) {
            return (T) (isHexNumber(trimmed) ? decodeBigInteger(trimmed) : new BigInteger(trimmed));
        } else if (Float.class == targetClass || float.class == targetClass) {
            return (T) Float.valueOf(trimmed);
        } else if (Double.class == targetClass || double.class == targetClass) {
            return (T) Double.valueOf(trimmed);
        } else if (BigDecimal.class == targetClass || Number.class == targetClass) {
            return (T) new BigDecimal(trimmed);
        } else {
            throw new IllegalArgumentException(
                    "Cannot convert String [" + text + "] to target class [" + targetClass.getName() + "]");
        }
    }