uguid/
error.rs

1// Copyright 2022 Google LLC
2//
3// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
4// https://www.apache.org/licenses/LICENSE-2.0> or the MIT license
5// <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your
6// option. This file may not be copied, modified, or distributed
7// except according to those terms.
8
9use core::fmt::{self, Display, Formatter};
10
11/// Error type for [`Guid::try_parse`] and [`Guid::from_str`].
12///
13/// [`Guid::from_str`]: core::str::FromStr::from_str
14/// [`Guid::try_parse`]: crate::Guid::try_parse
15#[derive(Clone, Copy, Debug, Eq, PartialEq, Hash, Ord, PartialOrd)]
16pub enum GuidFromStrError {
17    /// Input has the wrong length, expected 36 bytes.
18    Length,
19
20    /// Input is missing a separator (`-`) at this byte index.
21    Separator(u8),
22
23    /// Input contains invalid ASCII hex at this byte index.
24    Hex(u8),
25}
26
27impl Default for GuidFromStrError {
28    fn default() -> Self {
29        Self::Length
30    }
31}
32
33impl Display for GuidFromStrError {
34    fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
35        match self {
36            Self::Length => {
37                f.write_str("GUID string has wrong length (expected 36 bytes)")
38            }
39            Self::Separator(index) => write!(
40                f,
41                "GUID string is missing a separator (`-`) at index {index}",
42            ),
43            Self::Hex(index) => {
44                write!(
45                    f,
46                    "GUID string contains invalid ASCII hex at index {index}",
47                )
48            }
49        }
50    }
51}
52
53impl core::error::Error for GuidFromStrError {}
uguid/error.rs

uguid/
error.rs
