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// 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
#[diplomat::bridge]
#[diplomat::abi_rename = "icu4x_{0}_mv1"]
#[diplomat::attr(auto, namespace = "icu4x")]
pub mod ffi {
use alloc::boxed::Box;
use icu_segmenter::scaffold::{Latin1, PotentiallyIllFormedUtf8, Utf16};
#[cfg(feature = "buffer_provider")]
use crate::unstable::{errors::ffi::DataError, provider::ffi::DataProvider};
#[diplomat::opaque]
/// An ICU4X grapheme-cluster-break segmenter, capable of finding grapheme cluster breakpoints
/// in strings.
#[diplomat::rust_link(icu::segmenter::GraphemeClusterSegmenter, Struct)]
#[diplomat::rust_link(icu::segmenter::GraphemeClusterSegmenterBorrowed, Struct, hidden)]
pub struct GraphemeClusterSegmenter(icu_segmenter::GraphemeClusterSegmenter);
#[diplomat::opaque]
#[diplomat::rust_link(icu::segmenter::iterators::GraphemeClusterBreakIterator, Struct)]
pub struct GraphemeClusterBreakIteratorUtf8<'a>(
icu_segmenter::iterators::GraphemeClusterBreakIterator<'a, 'a, PotentiallyIllFormedUtf8>,
);
#[diplomat::opaque]
#[diplomat::rust_link(icu::segmenter::iterators::GraphemeClusterBreakIterator, Struct)]
pub struct GraphemeClusterBreakIteratorUtf16<'a>(
icu_segmenter::iterators::GraphemeClusterBreakIterator<'a, 'a, Utf16>,
);
#[diplomat::opaque]
#[diplomat::rust_link(icu::segmenter::iterators::GraphemeClusterBreakIterator, Struct)]
pub struct GraphemeClusterBreakIteratorLatin1<'a>(
icu_segmenter::iterators::GraphemeClusterBreakIterator<'a, 'a, Latin1>,
);
impl GraphemeClusterSegmenter {
/// Construct an [`GraphemeClusterSegmenter`] using compiled data.
#[diplomat::rust_link(icu::segmenter::GraphemeClusterSegmenter::new, FnInStruct)]
#[diplomat::attr(auto, constructor)]
#[cfg(feature = "compiled_data")]
pub fn create() -> Box<GraphemeClusterSegmenter> {
Box::new(GraphemeClusterSegmenter(
icu_segmenter::GraphemeClusterSegmenter::new().static_to_owned(),
))
}
/// Construct an [`GraphemeClusterSegmenter`].
#[diplomat::rust_link(icu::segmenter::GraphemeClusterSegmenter::new, FnInStruct)]
#[diplomat::attr(all(supports = fallible_constructors, supports = named_constructors), named_constructor = "with_provider")]
#[cfg(feature = "buffer_provider")]
pub fn create_with_provider(
provider: &DataProvider,
) -> Result<Box<GraphemeClusterSegmenter>, DataError> {
Ok(Box::new(GraphemeClusterSegmenter(
icu_segmenter::GraphemeClusterSegmenter::try_new_with_buffer_provider(
provider.get()?,
)?,
)))
}
/// Segments a string.
///
/// Ill-formed input is treated as if errors had been replaced with REPLACEMENT CHARACTERs according
/// to the WHATWG Encoding Standard.
#[diplomat::rust_link(
icu::segmenter::GraphemeClusterSegmenterBorrowed::segment_str,
FnInStruct,
hidden
)]
#[diplomat::rust_link(
icu::segmenter::GraphemeClusterSegmenterBorrowed::segment_utf8,
FnInStruct
)]
#[diplomat::attr(not(supports = utf8_strings), disable)]
#[diplomat::attr(*, rename = "segment")]
pub fn segment_utf8<'a>(
&'a self,
input: &'a DiplomatStr,
) -> Box<GraphemeClusterBreakIteratorUtf8<'a>> {
Box::new(GraphemeClusterBreakIteratorUtf8(
self.0.as_borrowed().segment_utf8(input),
))
}
/// Segments a string.
///
/// Ill-formed input is treated as if errors had been replaced with REPLACEMENT CHARACTERs according
/// to the WHATWG Encoding Standard.
#[diplomat::rust_link(
icu::segmenter::GraphemeClusterSegmenterBorrowed::segment_utf16,
FnInStruct
)]
#[diplomat::attr(not(supports = utf8_strings), rename = "segment")]
#[diplomat::attr(supports = utf8_strings, rename = "segment16")]
pub fn segment_utf16<'a>(
&'a self,
input: &'a DiplomatStr16,
) -> Box<GraphemeClusterBreakIteratorUtf16<'a>> {
Box::new(GraphemeClusterBreakIteratorUtf16(
self.0.as_borrowed().segment_utf16(input),
))
}
/// Segments a Latin-1 string.
#[diplomat::rust_link(
icu::segmenter::GraphemeClusterSegmenterBorrowed::segment_latin1,
FnInStruct
)]
#[diplomat::attr(not(supports = utf8_strings), disable)]
pub fn segment_latin1<'a>(
&'a self,
input: &'a [u8],
) -> Box<GraphemeClusterBreakIteratorLatin1<'a>> {
Box::new(GraphemeClusterBreakIteratorLatin1(
self.0.as_borrowed().segment_latin1(input),
))
}
}
impl<'a> GraphemeClusterBreakIteratorUtf8<'a> {
/// Finds the next breakpoint. Returns -1 if at the end of the string or if the index is
/// out of range of a 32-bit signed integer.
#[diplomat::rust_link(
icu::segmenter::iterators::GraphemeClusterBreakIterator::next,
FnInStruct
)]
#[diplomat::rust_link(
icu::segmenter::iterators::GraphemeClusterBreakIterator::Item,
AssociatedTypeInStruct,
hidden
)]
pub fn next(&mut self) -> i32 {
self.0
.next()
.and_then(|u| i32::try_from(u).ok())
.unwrap_or(-1)
}
}
impl<'a> GraphemeClusterBreakIteratorUtf16<'a> {
/// Finds the next breakpoint. Returns -1 if at the end of the string or if the index is
/// out of range of a 32-bit signed integer.
#[diplomat::rust_link(
icu::segmenter::iterators::GraphemeClusterBreakIterator::next,
FnInStruct
)]
#[diplomat::rust_link(
icu::segmenter::iterators::GraphemeClusterBreakIterator::Item,
AssociatedTypeInStruct,
hidden
)]
pub fn next(&mut self) -> i32 {
self.0
.next()
.and_then(|u| i32::try_from(u).ok())
.unwrap_or(-1)
}
}
impl<'a> GraphemeClusterBreakIteratorLatin1<'a> {
/// Finds the next breakpoint. Returns -1 if at the end of the string or if the index is
/// out of range of a 32-bit signed integer.
#[diplomat::rust_link(
icu::segmenter::iterators::GraphemeClusterBreakIterator::next,
FnInStruct
)]
#[diplomat::rust_link(
icu::segmenter::iterators::GraphemeClusterBreakIterator::Item,
AssociatedTypeInStruct,
hidden
)]
pub fn next(&mut self) -> i32 {
self.0
.next()
.and_then(|u| i32::try_from(u).ok())
.unwrap_or(-1)
}
}
}