MolotovCherry

Closures Decompiled

Closures get compiled down to anonymous structs which include their captures as the struct's fields.

That means a capturing closure

let x = 1i32;
let c = || println!("{x}");
c();

Is compiled to[^1]

MolotovCherry

#![feature(gen_blocks)]

fn foo() -> impl Iterator<Item = i32> {
    gen {
        yield 123;
        for i in 0..10 {
            yield i * i;
        }
        yield 321;
    }

MolotovCherry

[package]
name = "foo"
version = "0.1.0"
edition = "2021"

# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html

[dependencies]

[dependencies.windows]

MolotovCherry

[dependencies]
thiserror = "1.0.30"

[dependencies.windows]
version = "0.33.0"
features = [
    "Win32_System_Threading",
    "Win32_Foundation",
    "Win32_Security",
    "Win32_System_SystemServices"