As the macro system has become so fundamental to Porth, Alexey sould double down with meta macros.
Meta macros would expand generators, providing similar functionality to while loops but for macros.
New keywords gen and meta would be introduced, and intrinsic generator iota:
gen enum_names A B C end
meta
macro enum_names iota end
end
would expand to the code:
macro A 0 end
macro B 1 end
macro C 2 end
This would allow also you to define structures. For example, we will rewrite this structure in the meta macro system
macro fd mem end
macro statbuf fd 8 + end
macro content statbuf sizeof(stat) + end
macro line content sizeof(Str) + end
// meta macro rewrite
gen fields fd statbuf content line end
gen fields0 mem fields end
gen types void ptr stat Str end
meta
macro fields fields0 sizeof({types}) + end
end
Of course you would also have to define
macro sizeof(void) 0 end
macro sizeof(ptr) 8 end
Maybe it would be best to rename the gen keyword fields, and the meta keyword struct.
Also please rerwite collapse OS in porth!