icu_capi/
measure_unit_parser.rs

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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
5#[diplomat::bridge]
6#[diplomat::abi_rename = "icu4x_{0}_mv1"]
7#[diplomat::attr(auto, namespace = "icu4x")]
8pub mod ffi {
9    use alloc::boxed::Box;
10
11    #[cfg(feature = "buffer_provider")]
12    use crate::errors::ffi::DataError;
13    #[cfg(feature = "buffer_provider")]
14    use crate::provider::ffi::DataProvider;
15
16    #[diplomat::opaque]
17    /// An ICU4X Measurement Unit object which represents a single unit of measurement
18    /// such as `meter`, `second`, `kilometer-per-hour`, `square-meter`, etc.
19    ///
20    /// You can create an instance of this object using [`MeasureUnitParser`] by calling the `parse` method.
21    #[diplomat::rust_link(icu::experimental::measure::measureunit::MeasureUnit, Struct)]
22    pub struct MeasureUnit(pub icu_experimental::measure::measureunit::MeasureUnit);
23
24    #[diplomat::opaque]
25    /// An ICU4X Measure Unit Parser object, capable of parsing the CLDR unit identifier (e.g. `meter-per-square-second`) and get the [`MeasureUnit`].
26    #[diplomat::rust_link(icu::experimental::measure::parser::MeasureUnitParser, Struct)]
27    pub struct MeasureUnitParser(pub icu_experimental::measure::parser::MeasureUnitParser);
28
29    impl MeasureUnitParser {
30        /// Construct a new [`MeasureUnitParser`] instance using compiled data.
31        #[diplomat::rust_link(
32            icu::experimental::measure::parser::MeasureUnitParser::new,
33            FnInStruct
34        )]
35        #[diplomat::attr(auto, constructor)]
36        #[cfg(feature = "compiled_data")]
37        pub fn create() -> Box<MeasureUnitParser> {
38            Box::new(MeasureUnitParser(
39                icu_experimental::measure::parser::MeasureUnitParser::default(),
40            ))
41        }
42        /// Construct a new [`MeasureUnitParser`] instance using a particular data source.
43        #[diplomat::rust_link(
44            icu::experimental::measure::parser::MeasureUnitParser::new,
45            FnInStruct
46        )]
47        #[diplomat::attr(all(supports = fallible_constructors, supports = named_constructors), named_constructor = "with_provider")]
48        #[cfg(feature = "buffer_provider")]
49        pub fn create_with_provider(
50            provider: &DataProvider,
51        ) -> Result<Box<MeasureUnitParser>, DataError> {
52            Ok(Box::new(MeasureUnitParser(
53                icu_experimental::measure::parser::MeasureUnitParser::try_new_with_buffer_provider(
54                    provider.get()?,
55                )?,
56            )))
57        }
58
59        #[diplomat::rust_link(
60            icu::experimental::measure::parser::MeasureUnitParser::parse,
61            FnInStruct
62        )]
63        pub fn parse(&self, unit_id: &DiplomatStr) -> Option<Box<MeasureUnit>> {
64            self.0
65                .try_from_utf8(unit_id)
66                .ok()
67                .map(MeasureUnit)
68                .map(Box::new)
69        }
70    }
71}
icu_capi/measure_unit_parser.rs

icu_capi/
measure_unit_parser.rs
