72

So, this uses a macro, but if you're thinking anything is possible with a macro, it's actually not in Rust. The input does still need to parse as valid Rust tokens.

Which means the authors asked themselves at some point: Is the Rust syntax a superset of the Python syntax?
And well, it's not. In particular, some Python keywords will just be tokenized as an identifier (like a variable name).

But it is close enough that the authors decided against requiring a massive string to be passed in, which does amuse me. 🙃

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[-] cabhan@discuss.tchncs.de 45 points 1 day ago

With projects like these, I'm always torn between thinking that it's cool it's possible, and horror that someone somewhere will try to use this in production code.

[-] BestBouclettes@jlai.lu 5 points 1 day ago* (last edited 1 day ago)

It's probably both

[-] flashgnash@lemm.ee 19 points 1 day ago

This is absurd, the amount of effort that must have gone into this purely for shits and/or giggles

[-] fossphi@lemm.ee 19 points 1 day ago* (last edited 1 day ago)

shits and/or giggles

That's probably the single most impactful cause for doing things with computers

[-] quaff@lemmy.ca 29 points 1 day ago

Personally, I can’t wait to inline PHP in my rust code!

[-] rikudou 1 points 9 hours ago

Just use Peachpie and run it with your C# code!

[-] flashgnash@lemm.ee 13 points 1 day ago

Better yet inline PHP inside the inline python in your rust code

[-] JoYo@lemmy.ml 4 points 1 day ago* (last edited 1 day ago)

is it converting the syntax to rust? wouldn't that be easier at the LLIL or i guess python bytecode level?

[-] Ephera@lemmy.ml 9 points 1 day ago* (last edited 1 day ago)

From what I understand, it works like this:

  1. Rust compiler reads the pseudo-Python and tokenizes it according to Rust's rules.
  2. Macro code converts the tokens back to (now proper) Python, while filling in the captured variables. I believe, this is the code that does this.
  3. Python code is executed in an actual Python interpreter, via PyO3.
[-] JoYo@lemmy.ml 3 points 1 day ago

oh ok nm i misunderstood. thanks

this post was submitted on 16 Oct 2024
72 points (100.0% liked)

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