Some upper bounds?

[BenWiederhake]

Currently, there are no upper bounds in place, for example regarding the macro call stack:

macro function
begin
    function
endmacro
function

This segfaults because the stack grows out of bounds. Adding hardcoded upperbounds, like a depth of 2048 or whatever should suffice.

I'm aware that this is yet another piece of information that needs to be carried around all the time. Maybe putting the variables, macros, hex flag, and stack depth all in a single "context" struct would clean up the function signatures?

[thosakwe]

Valid concern, but I'm wondering how necessary it might be in practice. Since t2b isn't a real programming language, I doubt people would be writing functions so recursive that they trigger segfaults.

Though, it might be good to impose bounds just in case.

[thosakwe]

And yes, having a context struct would be smarter. I've actually removed hexMode locally, as it's no longer necessary, now that hex/bin/oct literals are in place.

[thosakwe]

Plus, there is also now a return keyword.