louisdh / cub Goto Github PK

The lever involves some very complicated operations. You have hashing as a token mapper and all these string operations. Since String has variable lengths encoding some of the O(n) operations are secretly O(n^2). I have the same problem in my lexer for Swizzle but I use string indices rather than this so the string only has to scan starting from the current index.

It would be really nice if diagnostics pointed to the code they’re diagnosing, more than just Error on line 2: xxx.

Clang/Swift’s diagnostic formatting is really nice, and I’d love to see something more like that.

foo.cub:10:2 error: unexpected token
   for (), x > 12, x += 1 {
       ^

Bonus points for ANSI coloring.

Can you make a more simpler way of installing the interpreter? Like using brew or something.

There’s currently no diagnostic raised when a function declared as returns doesn’t return a value.

This can be tricky, as you have to prove all paths through the function body actually return.