For

for statement represent repetition. Loop variable is placed before in keyword, and range is placed after it.

break can be used to break the loop.

module ModuleA {
    var a: logic<10>;

    always_comb {
        for i in 0..10 {
            a = i;

            if i == 5 {
                break;
            }
        }
    }
}

You can iterate the loop in descending order by putting rev keyword after in keyword.

module ModuleA {
    var a: logic<10>;

    always_comb {
        for i in rev 0..10 {
            a = i;

            if i == 5 {
                break;
            }
        }
    }
}