That's pretty cool! I just transliterated the instructions into C macros; but i didn't bother with the jump tables. The nice thing with this approach is that you can mix vm instructions with c code freely; and get gdb support. I needed that because speeding up via C wasnt enough to decode the full URL and I still needed to do additional reversing.
Was your method fast enough to get all three parts of the URL?
Was your method fast enough to get all three parts of the URL?