private void checkArguments()

in core/src/main/java/com/taobao/arthas/core/command/monitor200/TimeTunnelCommand.java [233:254]

• 17 lines of code
• 13 McCabe index (conditional complexity)

    private void checkArguments() {
        // 检查d/p参数是否有i参数配套
        if ((isDelete || isPlay) && null == index) {
            throw new IllegalArgumentException("Time fragment index is expected, please type -i to specify");
        }

        // 在t参数下class-pattern,method-pattern
        if (isTimeTunnel) {
            if (StringUtils.isEmpty(classPattern)) {
                throw new IllegalArgumentException("Class-pattern is expected, please type the wildcard expression to match");
            }
            if (StringUtils.isEmpty(methodPattern)) {
                throw new IllegalArgumentException("Method-pattern is expected, please type the wildcard expression to match");
            }
        }

        // 一个参数都没有是不行滴
        if (null == index && !isTimeTunnel && !isDeleteAll && StringUtils.isEmpty(watchExpress)
                && !isList && StringUtils.isEmpty(searchExpress)) {
            throw new IllegalArgumentException("Argument(s) is/are expected, type 'help tt' to read usage");
        }
    }