lipstick 💄🐷

You can put lipstick on a pig

What

lipstick compiles a subset of Rust's syntax into C. It's not a "Rust subset" though, since there's not borrow checker or lifetimes. It's simply a Rust-like syntax frontend for C.

Why

Because it's fun, duh.

Also, it might be a good teaching tool, so you can temporarily "turn off" the borrow checker. You can see how writing in unsafe system languages looks like, without actually having any C or C++ knowledge.

Input

rust fn foo() -> &u32 { let x: u32 = 7; let y: &u32 = &x; return y; }

Output

```c

include

ifndef u32

define u32 uint32_t

endif

u32* foo() { u32 x = 7; u32 *y = &x; return y; } ```

Reference

• No type inference, lifetimes, traits, generics, methods, impls, visibility modifiers, paths, tuples, patterns, attributes, etc.
• match → switch
• while, loop, for i in 0..n {}, if-else.
• Primitives u32, i32, usize, ...
• References &x and *x.
• Structs and arrays.
• No fancy restrict, const or volatile shenanigans.

TODO

• [ ] Remove all the todo!()s and panics.
• [ ] Unions
• [ ] Infer -> operator.
• [ ] Some form of use modules
• [ ] statics
• [ ] Tuples?
• [ ] Attributes for "annotations" (e.g. volatile)