mistake/
lib.rs

1pub enum Mistake<T, E> {
2    Fine(T, Vec<E>),
3    Fail(Vec<E>),
4}
5
6impl<T, E> Mistake<T, E> {
7    pub fn to_option(self, errors: &mut Vec<E>) -> Option<T> {
8        match self {
9            Mistake::Fine(val, errs) => {
10                errors.extend(errs);
11                Some(val)
12            }
13            Mistake::Fail(errs) => {
14                errors.extend(errs);
15                None
16            }
17        }
18    }
19}
20
21impl<T, E> From<Result<T, E>> for Mistake<T, E> {
22    fn from(result: Result<T, E>) -> Self {
23        match result {
24            Ok(val) => Mistake::Fine(val, Vec::new()),
25            Err(err) => Mistake::Fail(vec![err]),
26        }
27    }
28}
29
30#[macro_export]
31macro_rules! attempt {
32    ($mistake:expr, $errors:expr) => {
33        match $mistake.to_option(&mut $errors) {
34            Some(val) => val,
35            None => return crate::Mistake::Fail($errors),
36        }
37    };
38}
39
40#[macro_export]
41macro_rules! attempt_res {
42    ($result:expr, $errors:expr) => {
43        match $crate::Mistake::from($result).to_option(&mut $errors) {
44            Some(val) => val,
45            None => return crate::Mistake::Fail($errors),
46        }
47    };
48}
mistake/lib.rs

mistake/
lib.rs
