1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76

use crate::file::Eu4FileEntryName;
use zip::result::ZipError;

/// An EU4 Error
#[derive(thiserror::Error, Debug)]
#[error(transparent)]
pub struct Eu4Error(#[from] Box<Eu4ErrorKind>);

impl Eu4Error {
    pub(crate) fn new(kind: Eu4ErrorKind) -> Eu4Error {
        Eu4Error(Box::new(kind))
    }

    /// Return the specific type of error
    pub fn kind(&self) -> &Eu4ErrorKind {
        &self.0
    }
}

impl From<Eu4ErrorKind> for Eu4Error {
    fn from(err: Eu4ErrorKind) -> Self {
        Eu4Error::new(err)
    }
}

/// Specific type of error
#[derive(thiserror::Error, Debug)]
pub enum Eu4ErrorKind {
    #[error("unable to parse as zip: {0}")]
    ZipArchive(#[from] ZipError),

    #[error("unable to inflate zip entry: {name}: {source}")]
    ZipInflation {
        name: Eu4FileEntryName,

        #[source]
        source: std::io::Error,
    },

    #[error("unknown header found in zip entry. Must be EU4txt or EU4bin")]
    ZipHeader,

    #[error("unknown header found in file. Must be EU4txt, EU4bin, or a zip file.")]
    UnknownHeader,

    #[error("unable to parse due to: {0}")]
    Parse(#[source] jomini::Error),

    #[error("unable to deserialize due to: {0}")]
    Deserialize(#[source] jomini::Error),

    #[error("error while writing output: {0}")]
    Writer(#[source] jomini::Error),

    #[error("unknown binary token encountered: {token_id:#x}")]
    UnknownToken { token_id: u16 },

    #[error("country tags must be 3 letters in length")]
    CountryTagIncorrectSize,

    #[error("country tags must contain only ascii letters")]
    CountryTagInvalidCharacters,

    #[error("expected the binary integer: {0} to be parsed as a date")]
    InvalidDate(i32),
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn size_of_error_test() {
        assert_eq!(std::mem::size_of::<Eu4Error>(), 8);
    }
}