icu_locid/parser/
errors.rs

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1// This file is part of ICU4X. For terms of use, please see the file
2// called LICENSE at the top level of the ICU4X source tree
3// (online at: https://github.com/unicode-org/icu4x/blob/main/LICENSE ).
4
5use displaydoc::Display;
6
7/// List of parser errors that can be generated
8/// while parsing [`LanguageIdentifier`](crate::LanguageIdentifier), [`Locale`](crate::Locale),
9/// [`subtags`](crate::subtags) or [`extensions`](crate::extensions).
10///
11/// Re-exported as [`Error`](crate::Error).
12#[derive(Display, Debug, PartialEq, Copy, Clone)]
13#[non_exhaustive]
14pub enum ParserError {
15    /// Invalid language subtag.
16    ///
17    /// # Examples
18    ///
19    /// ```
20    /// use icu::locid::subtags::Language;
21    /// use icu::locid::ParserError;
22    ///
23    /// assert_eq!("x2".parse::<Language>(), Err(ParserError::InvalidLanguage));
24    /// ```
25    #[displaydoc("The given language subtag is invalid")]
26    InvalidLanguage,
27
28    /// Invalid script, region or variant subtag.
29    ///
30    /// # Examples
31    ///
32    /// ```
33    /// use icu::locid::subtags::Region;
34    /// use icu::locid::ParserError;
35    ///
36    /// assert_eq!("#@2X".parse::<Region>(), Err(ParserError::InvalidSubtag));
37    /// ```
38    #[displaydoc("Invalid subtag")]
39    InvalidSubtag,
40
41    /// Invalid extension subtag.
42    ///
43    /// # Examples
44    ///
45    /// ```
46    /// use icu::locid::extensions::unicode::Key;
47    /// use icu::locid::ParserError;
48    ///
49    /// assert_eq!("#@2X".parse::<Key>(), Err(ParserError::InvalidExtension));
50    /// ```
51    #[displaydoc("Invalid extension")]
52    InvalidExtension,
53
54    /// Duplicated extension.
55    ///
56    /// # Examples
57    ///
58    /// ```
59    /// use icu::locid::Locale;
60    /// use icu::locid::ParserError;
61    ///
62    /// assert_eq!(
63    ///     "und-u-hc-h12-u-ca-calendar".parse::<Locale>(),
64    ///     Err(ParserError::DuplicatedExtension)
65    /// );
66    /// ```
67    #[displaydoc("Duplicated extension")]
68    DuplicatedExtension,
69}
70
71#[cfg(feature = "std")]
72impl std::error::Error for ParserError {}
icu_locid/parser/errors.rs

icu_locid/parser/
errors.rs
