1) It's difficult to know how long a method will be when it's compiled. Basically you have to compile it to find out. The 64k limit is on the generated byte-cod

1) It's difficult to know how long a method will be when it's compiled. Basically you have to compile it to find out. The 64k limit is on the generated byte-code, not on the source. 2) Why bother? I mean generating C (in my case) was so much easier, a simpler solution (not using a tree) is bound to have less bugs, be easier to maintain etc. I mean this is a fundamentally ridiculous limitation. One can work around it with a large amount of effort, but it shouldn't be necessary.