derive-into 0.2.4

A Rust derive macro for easily creating conversions between structs and enums
Documentation 
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use derive_into::Convert;

#[derive(Debug, PartialEq, Default)]
struct Number(u8);

impl From<Number> for u8 {
    fn from(n: Number) -> u8 {
        n.0
    }
}
impl From<u8> for Number {
    fn from(n: u8) -> Number {
        Number(n)
    }
}

impl From<Number> for u16 {
    fn from(n: Number) -> u16 {
        n.0 as u16
    }
}
impl From<u16> for Number {
    fn from(_n: u16) -> Number {
        Number(0)
    }
}
#[derive(Convert, Debug, PartialEq)]
#[convert(into(path = "B", default))]
#[convert(try_from(path = "B"))]
pub struct A {
    #[convert(unwrap)]
    pub normal: Option<u8>,

    // auto into of inner
    pub opt: Option<u8>,
    // auto into of inner
    pub vec: Vec<u8>,

    #[convert(rename = "renamed_field")]
    pub old_name: u16,
}

#[derive(Default, Debug, PartialEq)]
pub struct B {
    normal: u8,
    opt: Option<Number>,
    vec: Vec<Number>,
    renamed_field: Number,
    x: Option<u8>,
}

#[derive(Convert, Debug)]
#[convert(into(path = "D"))]
pub struct C(Option<u8>, u8);

#[derive(Default, Debug, PartialEq)]
pub struct D(Option<Number>, Number);

#[derive(Convert)]
#[convert(into(path = "F"))]
enum E {
    Variant1(A),
    #[convert(rename = "VariantRenamed")]
    VariantNamed {
        field: A,
        #[convert(rename = "other2")]
        other: u8,
    },
    Unit,
}

#[derive(Debug, PartialEq)]
enum F {
    Variant1(B),
    VariantRenamed { field: B, other2: Number },
    Unit,
}

fn main() {
    let a = A {
        normal: Some(1),
        opt: Some(2),
        vec: vec![3],
        old_name: 4,
    };
    let b: B = a.try_into().unwrap();
    assert_eq!(b.normal, 1);
    assert_eq!(b.opt.unwrap().0, 2);
    assert_eq!(b.vec, vec![Number(3)]);

    assert_eq!(b.renamed_field, Number(0));

    let d: D = C(Some(3), 1).into();
    assert_eq!(d.0.unwrap().0, 3);
    assert_eq!(d.1.0, 1);

    let e = E::Variant1(A {
        normal: Some(1),
        opt: Some(2),
        vec: vec![3],
        old_name: 4,
    });
    let f: F = e.try_into().unwrap();
    assert_eq!(
        f,
        F::Variant1(B {
            normal: 1,
            opt: Some(Number(2)),
            vec: vec![Number(3)],
            renamed_field: Number(0),
            x: None,
        })
    );
}