1#[derive(Debug)]
2pub struct UnknownError {
3 pub name: String,
4 pub value: String,
5 pub expected: Vec<(Vec<String>, String)>,
6}
7
8impl std::fmt::Display for UnknownError {
9 fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
10 write!(
11 f,
12 "Unknown {} variant {}. \nexpected: ",
13 self.name, self.value
14 )?;
15
16 for (items, name) in self.expected.iter() {
17 write!(f, "\n- ")?;
18
19 for (index, item) in items.iter().enumerate() {
20 write!(
21 f,
22 "{}{}",
23 item,
24 if index == items.len() - 1 { "" } else { " | " }
25 )?;
26 }
27
28 write!(f, " => {}.", name)?;
29 }
30
31 Ok(())
32 }
33}
34
35impl std::error::Error for UnknownError {}
36
37#[derive(Debug)]
38pub struct MissingFieldError(pub String);
39
40impl std::fmt::Display for MissingFieldError {
41 fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
42 write!(f, "Did not set the field \"{}\" when building", self.0)
43 }
44}
45
46macro_rules! unknown_error_expected {
47 ($($head:literal $(| $tail:literal)* => $type:literal),*) => {
48 vec![
49 $(
50 (
51 vec![$head.to_string() $(, $tail.to_string())*],
52 $type.to_string()
53 )
54 ),*
55 ]
56 };
57}
58
59pub(crate) use unknown_error_expected;