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got exceptions working along with my weird idea for clearing the operand stack 🤓 https://hastebin.com/oqalutefuz.js
Since my language is all expressions I can't just clear the entire operand stack like you'd see in the openjdk, coreclr, and mono interpreters
python seems to use frames for everything, and I wanted to see if I could do this without pushing protected-block frames
(I guess I should link these toots into #programming )
To accomplish this, when an exception is thrown my clear_op_stack routine scans bytecode until it sees a ProtectedJump (marks the end of a catch or try, similar to MSIL's CEE_LEAVE_S), along the way it keeps track of stack effects and applies them at the end. so that way you get however may POPs you'd expect if the exception weren't thrown