"SM" == Skip Montanaro
writes:
Jeremy> The symbol table pass detects illegal future statements by Jeremy> comparing the current line number against the line number of Jeremy> the last legal futre statement. SM> Why not just add a flag (default false at the start of the SM> compilation) to the compiling struct that tells you if you've SM> seen a future-killer statement already? Then if you see a SM> future statement the compiler can whine. Almost everything is a future-killer statement, only doc strings and other future statements are allowed. I would have to add a st->st_future_killed = 1 for almost every node type. There are also a number of nodes (about ten) that can contain future statements or doc strings or future killers. As a result, I'd have to add special cases for them, too. Jeremy