Reorder match arms

It would be nice if there was an assist to reorder match arms based on the order of variants within the enum definition. I.e. change this:

enum Foo {
    A,
    B,
    C,
}

fn bar(foo: Foo) -> i32 {
    match foo {
        Foo::C => 3,
        Foo::B => 2,
        Foo::A => 1,
    }
}

to this:

enum Foo {
    A,
    B,
    C,
}

fn bar(foo: Foo) -> i32 {
    match foo {
        Foo::A => 1,
        Foo::B => 2,
        Foo::C => 3,
    }
}

Alternatively / in addition to this, the "fill match arms" assist could insert new arms into the correct position, rather than always placing them at the end.