libmosh/
err.rs

1//! Errors
2
3use std::{
4    fmt::{self, Display},
5    io, num,
6};
7
8/// It handles internal, I/O and formatter errors
9#[non_exhaustive]
10#[derive(Debug)]
11pub enum MoshError {
12    /// Data format is not supported.
13    DecodingError(png::DecodingError),
14    /// i.e. wrong data size/formatter failure.
15    EncodingError(png::EncodingError),
16    /// Image palette issue.
17    InvalidPalette,
18    /// I/O errors.
19    IoError(io::Error),
20    /// Out of range errors,
21    ConversionError(num::TryFromIntError),
22    /// Probability distribution errors.
23    RngError(rand::distr::uniform::Error),
24    /// Allocation failed.
25    OutOfMemory,
26}
27
28impl std::error::Error for MoshError {}
29
30impl Display for MoshError {
31    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
32        match self {
33            Self::DecodingError(e) => Display::fmt(e, f),
34            Self::EncodingError(e) => Display::fmt(e, f),
35            Self::InvalidPalette => f.write_str("Invalid image palette"),
36            Self::IoError(e) => Display::fmt(e, f),
37            Self::ConversionError(e) => Display::fmt(e, f),
38            Self::RngError(e) => Display::fmt(e, f),
39            Self::OutOfMemory => f.write_str("Out of memory"),
40        }
41    }
42}
43
44impl From<io::Error> for MoshError {
45    fn from(e: io::Error) -> Self {
46        Self::IoError(e)
47    }
48}
49
50impl From<num::TryFromIntError> for MoshError {
51    fn from(e: num::TryFromIntError) -> Self {
52        Self::ConversionError(e)
53    }
54}
55
56impl From<png::DecodingError> for MoshError {
57    fn from(e: png::DecodingError) -> Self {
58        Self::DecodingError(e)
59    }
60}
61
62impl From<png::EncodingError> for MoshError {
63    fn from(e: png::EncodingError) -> Self {
64        Self::EncodingError(e)
65    }
66}
67
68impl From<rand::distr::uniform::Error> for MoshError {
69    fn from(e: rand::distr::uniform::Error) -> Self {
70        Self::RngError(e)
71    }
72}
libmosh/err.rs

libmosh/
err.rs
