How to define a dependent layout

[oovm]

I want to define a layout that has two forms, depending on whether the other layout is single-line or multi-line

For example, for the statement while cond body

If cond is single line, then body use layout 1

while true {
    layout1
}

If cond is multiline, then use body layout 2

while
     cond_a 
     && cond_b
     || cond_c
{
     layout2
}

---

flat_alt seems to only depend on whether itself is single-line or multi-line, is there a way to depend on other units

[Marwes]

This is a really tricky thing to get right with this kind of formatter in my experience. My best effort so far is using union which you could try under block::BlockDoc which I think should work for this case (though some choices around whitespace might not exactly match what you want).

If that doesn't work you will need to hack something yourself using union or choose a different formatter I am afraid.