// This file is part of ICU4X. For terms of use, please see the file

// called LICENSE at the top level of the ICU4X source tree

// (online at: https://github.com/unicode-org/icu4x/blob/main/LICENSE ).

use icu_collections::codepointinvlist::CodePointInversionListBuilder;

/// An object that accepts characters and/or strings

/// to be used with [`CaseMapCloser::add_string_case_closure_to()`]

/// and [`CaseMapCloser::add_case_closure_to()`]. Usually this object

/// will be some kind of set over codepoints and strings, or something that

/// can be built into one.

///

/// [`CaseMapCloser::add_string_case_closure_to()`]: crate::CaseMapCloser::add_string_case_closure_to

/// [`CaseMapCloser::add_case_closure_to()`]: crate::CaseMapCloser::add_case_closure_to

pub trait ClosureSink {

    /// Add a character to the set

    fn add_char(&mut self, c: char);

    /// Add a string to the set

    fn add_string(&mut self, string: &str);

}

impl ClosureSink for CodePointInversionListBuilder {

    fn add_char(&mut self, c: char) {

        self.add_char(c)

    }

    // The current version of CodePointInversionList doesn't include strings.

    // Trying to add a string is a no-op that will be optimized away.

    #[inline]

    fn add_string(&mut self, _string: &str) {}

Unexecuted instantiation: <icu_collections::codepointinvlist::builder::CodePointInversionListBuilder as icu_casemap::set::ClosureSink>::add_string

Unexecuted instantiation: <icu_collections::codepointinvlist::builder::CodePointInversionListBuilder as icu_casemap::set::ClosureSink>::add_string

}