zerotrie/
error.rs

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/// Error types for the `zerotrie` crate.
8#[derive(Debug, Copy, Clone, PartialEq, Eq, Display)]
9#[non_exhaustive]
10pub enum ZeroTrieBuildError {
11    /// Non-ASCII data was added to an ASCII-only trie.
12    #[displaydoc("Non-ASCII cannot be added to an ASCII-only trie")]
13    NonAsciiError,
14    /// The trie reached its maximum supported capacity.
15    #[displaydoc("Reached maximum capacity of trie")]
16    CapacityExceeded,
17    /// The builder could not solve the perfect hash function.
18    #[displaydoc("Failed to solve the perfect hash function. This is rare! Please report your case to the ICU4X team.")]
19    CouldNotSolvePerfectHash,
20    /// Mixed-case data was added to a case-insensitive trie.
21    #[displaydoc("Mixed-case data added to case-insensitive trie")]
22    MixedCase,
23    /// Strings were added to a trie containing the delimiter.
24    ///
25    /// # Examples
26    ///
27    /// ```
28    /// use std::collections::BTreeMap;
29    /// use zerotrie::dense::ZeroAsciiDenseSparse2dTrieOwned;
30    /// use zerotrie::ZeroTrieBuildError;
31    ///
32    /// let mut data: BTreeMap<&str, BTreeMap<&str, usize>> = BTreeMap::new();
33    ///
34    /// // Delimiter in a prefix
35    /// data.entry("aa/bb").or_default().insert("CCC", 1);
36    /// let err =
37    ///     ZeroAsciiDenseSparse2dTrieOwned::try_from_btree_map_str(&data, b'/')
38    ///         .unwrap_err();
39    /// assert_eq!(err, ZeroTrieBuildError::IllegalDelimiter);
40    ///
41    /// // Delimiter in a suffix
42    /// data.clear();
43    /// data.entry("aaa").or_default().insert("BB/CC", 1);
44    /// let err =
45    ///     ZeroAsciiDenseSparse2dTrieOwned::try_from_btree_map_str(&data, b'/')
46    ///         .unwrap_err();
47    /// assert_eq!(err, ZeroTrieBuildError::IllegalDelimiter);
48    /// ```
49    #[displaydoc("Delimiter is contained in one or more strings")]
50    IllegalDelimiter,
51}
52
53impl core::error::Error for ZeroTrieBuildError {}
zerotrie/error.rs

zerotrie/
error.rs
