1#[derive(PartialEq, Debug)]
2pub struct Map<'a>(pub &'a [(String, String)]);
3
4impl std::fmt::Display for Map<'_> {
5 fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
6 let arr: &[(String, String)] = self.0;
7 write!(f, "{}: {}", arr[0].0, arr[0].1)?;
8 for el in &arr[1..] {
9 write!(f, "\n {}: {}", el.0, el.1)?
10 }
11 Ok(())
12 }
13}
14
15#[macro_export]
16macro_rules! map {
17 ($($key:ident $(: $value:expr)?),*) => {
18 $crate::Map(&[
19 $(map!(@map_one $key $(: $value)?)),*
20 ][..])
21 };
22
23 (@map_one $key:ident) => {
24 (stringify!($key).to_string(), $key.to_string())
25 };
26 (@map_one $key:ident : $value:expr) => {
27 (stringify!($key).to_string(), $value.to_string())
28 };
29}