[REQUEST] Default macro/struc parameters.

Code:

macro dummy [a] {}
struc temp0 x,y,z {
    dummy .
     .a dd z
     .b dd y
     .c dq z
     .. = $ - .a
}
struc temp1 x,y,z {
   dummy .
     .a temp0 x
  .b dq y
     .c dq z
     .. = $ - .a.a
}


virtual
  .abc temp1 <?,?,?>,?,?
end virtual

The present syntax requires full topology expression at invocation, or assembly-time checking. It would more convenient (imho) to allow default values for parameters at the preprocessor level.

Code:

macro dummy [a] {}
struc temp0 x=?,y=?,z=? {
    dummy .
     .a dd z
     .b dd y
     .c dq z
     .. = $ - .a
}
struc temp1 x=?,y=?,z=? {
     dummy .
     .a temp0 x
  .b dq y
     .c dq z
     .. = $ - .a.a
}


virtual
  .abc temp1
end virtual

The amount of code required for this feature seems small since the preprocessor is already checking for "*". (Maybe a couple dozen lines - still working out the details.) AFAIK, it wouldn't interfere with present features/code.

Of course, the struct macros provide some of the functionality. Yet, there are workarounds being used because of lacking default parameters. For example, the "parm+0" for numerical values. Listings would look more "tidy" , imho.