icu_casemap/
set.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 icu_collections::codepointinvlist::CodePointInversionListBuilder;
6
7/// An object that accepts characters and/or strings
8/// to be used with [`CaseMapCloserBorrowed::add_string_case_closure_to()`]
9/// and [`CaseMapCloserBorrowed::add_case_closure_to()`].
10///
11/// Usually this object
12/// will be some kind of set over codepoints and strings, or something that
13/// can be built into one.
14///
15/// An implementation is provided for [`CodePointInversionListBuilder`], but users are encouraged
16/// to implement this trait on their own collections as needed.
17///
18/// [`CaseMapCloserBorrowed::add_string_case_closure_to()`]: crate::CaseMapCloserBorrowed::add_string_case_closure_to
19/// [`CaseMapCloserBorrowed::add_case_closure_to()`]: crate::CaseMapCloserBorrowed::add_case_closure_to
20pub trait ClosureSink {
21    /// Add a character to the set
22    fn add_char(&mut self, c: char);
23    /// Add a string to the set
24    fn add_string(&mut self, string: &str);
25}
26
27impl ClosureSink for CodePointInversionListBuilder {
28    fn add_char(&mut self, c: char) {
29        self.add_char(c)
30    }
31
32    // The current version of CodePointInversionList doesn't include strings.
33    // Trying to add a string is a no-op that will be optimized away.
34    #[inline]
35    fn add_string(&mut self, _string: &str) {}
36}
icu_casemap/set.rs

icu_casemap/
set.rs
