enum-as-inner 0.1.0

A proc-macro for deriving inner field accessor functions on enums.
Documentation 
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#[macro_use]
extern crate enum_as_inner;

#[derive(EnumAsInner)]
enum ManyVariants {
    One{ one: u32 },
    Two{ one: u32, two: i32 },
    Three{ one: bool, two: u32, three: i64 },
}

#[test]
fn test_one_named() {
    let many = ManyVariants::One{ one: 1 };

    assert!(many.as_one().is_some());
    assert!(many.as_two().is_none());
    assert!(many.as_three().is_none());

    assert_eq!(*many.as_one().unwrap(), 1_u32);
}

#[test]
fn test_two_named() {
    let many = ManyVariants::Two{ one: 1, two: 2 };

    assert!(many.as_one().is_none());
    assert!(many.as_two().is_some());
    assert!(many.as_three().is_none());

    assert_eq!(many.as_two().unwrap(), (&1_u32, &2_i32));
}

#[test]
fn test_three_named() {
    let many = ManyVariants::Three{ one: true, two: 1, three: 2 };

    assert!(many.as_one().is_none());
    assert!(many.as_two().is_none());
    assert!(many.as_three().is_some());

    assert_eq!(many.as_three().unwrap(), (&true, &1_u32, &2_i64));
}