cart_tmp_winit/
error.rs

1use std::{error, fmt};
2
3use crate::platform_impl;
4
5/// An error whose cause it outside Winit's control.
6#[derive(Debug)]
7pub enum ExternalError {
8    /// The operation is not supported by the backend.
9    NotSupported(NotSupportedError),
10    /// The OS cannot perform the operation.
11    Os(OsError),
12}
13
14/// The error type for when the requested operation is not supported by the backend.
15#[derive(Clone)]
16pub struct NotSupportedError {
17    _marker: (),
18}
19
20/// The error type for when the OS cannot perform the requested operation.
21#[derive(Debug)]
22pub struct OsError {
23    line: u32,
24    file: &'static str,
25    error: platform_impl::OsError,
26}
27
28impl NotSupportedError {
29    #[inline]
30    #[allow(dead_code)]
31    pub(crate) fn new() -> NotSupportedError {
32        NotSupportedError { _marker: () }
33    }
34}
35
36impl OsError {
37    #[allow(dead_code)]
38    pub(crate) fn new(line: u32, file: &'static str, error: platform_impl::OsError) -> OsError {
39        OsError { line, file, error }
40    }
41}
42
43#[allow(unused_macros)]
44macro_rules! os_error {
45    ($error:expr) => {{
46        crate::error::OsError::new(line!(), file!(), $error)
47    }};
48}
49
50impl fmt::Display for OsError {
51    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> Result<(), fmt::Error> {
52        f.pad(&format!(
53            "os error at {}:{}: {}",
54            self.file, self.line, self.error
55        ))
56    }
57}
58
59impl fmt::Display for ExternalError {
60    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> Result<(), fmt::Error> {
61        match self {
62            ExternalError::NotSupported(e) => e.fmt(f),
63            ExternalError::Os(e) => e.fmt(f),
64        }
65    }
66}
67
68impl fmt::Debug for NotSupportedError {
69    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> Result<(), fmt::Error> {
70        f.debug_struct("NotSupportedError").finish()
71    }
72}
73
74impl fmt::Display for NotSupportedError {
75    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> Result<(), fmt::Error> {
76        f.pad("the requested operation is not supported by Winit")
77    }
78}
79
80impl error::Error for OsError {}
81impl error::Error for ExternalError {}
82impl error::Error for NotSupportedError {}
cart_tmp_winit/error.rs

cart_tmp_winit/
error.rs
