this post was submitted on 16 Sep 2025
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Programmer Humor

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submitted 1 month ago by lena@gregtech.eu to c/programmer_humor@programming.dev
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[–] Kazumara@discuss.tchncs.de 17 points 1 month ago (2 children)

that’s just how they are made.

Can confirm, even the little training compiler we made at Uni for a subset of Java (Javali) had a backend and frontend.

I can't imagine trying to spit out machine code while parsing the input without an intermediary AST stage. It was complicated enough with the proper split.

[–] LeFantome@programming.dev 5 points 1 month ago

I have built single pass compilers that do everything in one shot without an AST. You are not going to get great error messages or optimization though.