1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167

// 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 ).

#[diplomat::bridge]
#[diplomat::abi_rename = "icu4x_{0}_mv1"]
#[diplomat::attr(auto, namespace = "icu4x")]
pub mod ffi {
    use alloc::boxed::Box;

    #[cfg(feature = "buffer_provider")]
    use crate::{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)]
    pub struct GraphemeClusterSegmenter(icu_segmenter::GraphemeClusterSegmenter);

    #[diplomat::opaque]
    #[diplomat::rust_link(icu::segmenter::GraphemeClusterBreakIterator, Struct)]
    #[diplomat::rust_link(
        icu::segmenter::GraphemeClusterBreakIteratorPotentiallyIllFormedUtf8,
        Typedef,
        hidden
    )]
    #[diplomat::rust_link(icu::segmenter::GraphemeClusterBreakIteratorUtf8, Typedef, hidden)]
    pub struct GraphemeClusterBreakIteratorUtf8<'a>(
        icu_segmenter::GraphemeClusterBreakIteratorPotentiallyIllFormedUtf8<'a, 'a>,
    );

    #[diplomat::opaque]
    #[diplomat::rust_link(icu::segmenter::GraphemeClusterBreakIterator, Struct)]
    #[diplomat::rust_link(icu::segmenter::GraphemeClusterBreakIteratorUtf16, Typedef, hidden)]
    pub struct GraphemeClusterBreakIteratorUtf16<'a>(
        icu_segmenter::GraphemeClusterBreakIteratorUtf16<'a, 'a>,
    );

    #[diplomat::opaque]
    #[diplomat::rust_link(icu::segmenter::GraphemeClusterBreakIterator, Struct)]
    #[diplomat::rust_link(icu::segmenter::GraphemeClusterBreakIteratorLatin1, Typedef, hidden)]
    pub struct GraphemeClusterBreakIteratorLatin1<'a>(
        icu_segmenter::GraphemeClusterBreakIteratorLatin1<'a, 'a>,
    );

    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(),
            ))
        }
        /// Construct an [`GraphemeClusterSegmenter`].
        #[diplomat::rust_link(icu::segmenter::GraphemeClusterSegmenter::new, FnInStruct)]
        #[diplomat::attr(supports = fallible_constructors, named_constructor = "with_provider")]
        #[cfg(feature = "buffer_provider")]
        pub fn create_with_provider(
            provider: &DataProvider,
        ) -> Result<Box<GraphemeClusterSegmenter>, DataError> {
            Ok(Box::new(GraphemeClusterSegmenter(
                provider.call_constructor(|provider| {
                    icu_segmenter::GraphemeClusterSegmenter::try_new_with_buffer_provider(provider)
                })?,
            )))
        }
        /// 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::GraphemeClusterSegmenter::segment_str,
            FnInStruct,
            hidden
        )]
        #[diplomat::rust_link(icu::segmenter::GraphemeClusterSegmenter::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.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::GraphemeClusterSegmenter::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.segment_utf16(input),
            ))
        }

        /// Segments a Latin-1 string.
        #[diplomat::rust_link(icu::segmenter::GraphemeClusterSegmenter::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.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::GraphemeClusterBreakIterator::next, FnInStruct)]
        #[diplomat::rust_link(
            icu::segmenter::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::GraphemeClusterBreakIterator::next, FnInStruct)]
        #[diplomat::rust_link(
            icu::segmenter::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::GraphemeClusterBreakIterator::next, FnInStruct)]
        #[diplomat::rust_link(
            icu::segmenter::GraphemeClusterBreakIterator::Item,
            AssociatedTypeInStruct,
            hidden
        )]
        pub fn next(&mut self) -> i32 {
            self.0
                .next()
                .and_then(|u| i32::try_from(u).ok())
                .unwrap_or(-1)
        }
    }
}