EnumAccess
Custom derive for automatically generating the accessor methods for Enums.
#[macro_use]
extern crate enum_access;
#[derive(EnumAccess)]
#[enum_access(get(name), get_some(index, value), iter(input))]
enum A {
Variant1 {
name: String,
input: i32,
},
Variant2 {
index: u32,
name: String,
value: i32,
},
Variant3 {
name: String,
#[enum_alias(input, value)]
lhs: i32,
#[enum_alias(input)]
rhs: i32,
#[enum_ignore]
input: i32,
},
Variant4(
#[enum_alias(index)] u32,
#[enum_alias(input)] i32,
#[enum_alias(input)] i32,
#[enum_alias(name)] String,
),
}
#[test]
fn it_works() {
let mut v = A::Variant1 {
name: "var1".to_string(),
input: 9,
};
assert_eq!(v.get_name(), &"var1".to_string());
assert_eq!(v.get_index(), None);
assert_eq!(v.get_value(), None);
assert_eq!(v.iter_inputs(), vec![&9]);
*v.get_mut_name() = "var1'".to_string();
assert_eq!(v.get_name(), &"var1'".to_string());
let mut v = A::Variant2 {
index: 0,
name: "var2".to_string(),
value: 23,
};
assert_eq!(v.get_name(), &"var2".to_string());
assert_eq!(v.get_index(), Some(&0));
assert_eq!(v.get_value(), Some(&23));
assert_eq!(v.iter_inputs(), Vec::<&i32>::new());
*v.get_mut_index().unwrap() = 100;
assert_eq!(v.get_index(), Some(&100));
let mut v = A::Variant3 {
name: "var3".to_string(),
lhs: 1,
rhs: 2,
input: 3,
};
assert_eq!(v.get_name(), &"var3".to_string());
assert_eq!(v.get_index(), None);
assert_eq!(v.get_value(), Some(&1));
assert_eq!(v.iter_inputs(), vec![&1, &2]);
for n in v.iter_mut_inputs() {
*n += 10;
}
assert_eq!(v.iter_inputs(), vec![&11, &12]);
let v = A::Variant4(10u32, 11i32, 12i32, "var4".to_string());
assert_eq!(v.get_name(), &"var4".to_string());
assert_eq!(v.get_index(), Some(&10));
assert_eq!(v.get_value(), None);
assert_eq!(v.iter_inputs(), vec![&11, &12]);
}