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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
// (online at: https://github.com/unicode-org/icu4x/blob/main/LICENSE ).
#[diplomat::bridge]
pub mod ffi {
use crate::errors::ffi::ICU4XError;
use crate::provider::ffi::ICU4XDataProvider;
use alloc::boxed::Box;
use icu_timezone::IanaBcp47RoundTripMapper;
use icu_timezone::IanaToBcp47Mapper;
use icu_timezone::TimeZoneBcp47Id;
/// An object capable of mapping from an IANA time zone ID to a BCP-47 ID.
///
/// This can be used via `try_set_iana_time_zone_id()` on [`ICU4XCustomTimeZone`].
///
/// [`ICU4XCustomTimeZone`]: crate::timezone::ffi::ICU4XCustomTimeZone
#[diplomat::opaque]
#[diplomat::rust_link(icu::timezone::IanaToBcp47Mapper, Struct)]
#[diplomat::rust_link(icu::timezone::IanaToBcp47Mapper::as_borrowed, FnInStruct, hidden)]
pub struct ICU4XIanaToBcp47Mapper(pub IanaToBcp47Mapper);
impl ICU4XIanaToBcp47Mapper {
#[diplomat::rust_link(icu::timezone::IanaToBcp47Mapper::new, FnInStruct)]
pub fn create(
provider: &ICU4XDataProvider,
) -> Result<Box<ICU4XIanaToBcp47Mapper>, ICU4XError> {
Ok(Box::new(ICU4XIanaToBcp47Mapper(call_constructor!(
IanaToBcp47Mapper::new [r => Ok(r)],
IanaToBcp47Mapper::try_new_with_any_provider,
IanaToBcp47Mapper::try_new_with_buffer_provider,
provider,
)?)))
}
}
/// An object capable of mapping from a BCP-47 time zone ID to an IANA ID.
#[diplomat::opaque]
#[diplomat::rust_link(icu::timezone::IanaBcp47RoundTripMapper, Struct)]
#[diplomat::rust_link(
icu::timezone::IanaBcp47RoundTripMapper::as_borrowed,
FnInStruct,
hidden
)]
pub struct ICU4XBcp47ToIanaMapper(pub IanaBcp47RoundTripMapper);
impl ICU4XBcp47ToIanaMapper {
#[diplomat::rust_link(icu::timezone::IanaBcp47RoundTripMapper::new, FnInStruct)]
pub fn create(
provider: &ICU4XDataProvider,
) -> Result<Box<ICU4XBcp47ToIanaMapper>, ICU4XError> {
Ok(Box::new(ICU4XBcp47ToIanaMapper(call_constructor!(
IanaBcp47RoundTripMapper::new [r => Ok(r)],
IanaBcp47RoundTripMapper::try_new_with_any_provider,
IanaBcp47RoundTripMapper::try_new_with_buffer_provider,
provider,
)?)))
}
/// Writes out the canonical IANA time zone ID corresponding to the given BCP-47 ID.
#[diplomat::rust_link(
icu::datetime::time_zone::IanaBcp47RoundTripMapper::bcp47_to_iana,
FnInStruct
)]
pub fn get(
&self,
value: &str,
write: &mut diplomat_runtime::DiplomatWriteable,
) -> Result<(), ICU4XError> {
use core::str::FromStr;
use writeable::Writeable;
let handle = self.0.as_borrowed();
TimeZoneBcp47Id::from_str(value)
.ok()
.and_then(|bcp47_id| handle.bcp47_to_iana(bcp47_id))
.ok_or(ICU4XError::TimeZoneInvalidIdError)?
.write_to(write)?;
Ok(())
}
}
}
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