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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
use ffi::TimeZoneInfo;
#[diplomat::bridge]
#[diplomat::abi_rename = "icu4x_{0}_mv1"]
#[diplomat::attr(auto, namespace = "icu4x")]
pub mod ffi {
use alloc::boxed::Box;
use crate::unstable::{
date::ffi::IsoDate,
datetime::ffi::IsoDateTime,
time::ffi::Time,
variant_offset::ffi::{UtcOffset, VariantOffsetsCalculator},
};
#[diplomat::opaque]
#[diplomat::rust_link(icu::time::TimeZone, Struct)]
pub struct TimeZone(pub(crate) icu_time::TimeZone);
impl TimeZone {
/// The unknown time zone.
#[diplomat::rust_link(icu::time::TimeZoneInfo::unknown, FnInStruct)]
#[diplomat::rust_link(icu::time::TimeZone::unknown, FnInStruct, hidden)]
#[diplomat::attr(auto, named_constructor)]
pub fn unknown() -> Box<TimeZone> {
Box::new(TimeZone(icu_time::TimeZone::UNKNOWN))
}
/// Whether the time zone is the unknown zone.
#[diplomat::rust_link(icu::time::TimeZone::is_unknown, FnInStruct)]
pub fn is_unknown(&self) -> bool {
self.0.is_unknown()
}
/// Creates a time zone from a BCP-47 string.
///
/// Returns the unknown time zone if the string is not a valid BCP-47 subtag.
#[diplomat::rust_link(icu::time::TimeZone, Struct, compact)]
#[diplomat::attr(auto, named_constructor = "from_bcp47")]
#[diplomat::demo(default_constructor)]
pub fn create_from_bcp47(id: &DiplomatStr) -> Box<Self> {
icu_locale_core::subtags::Subtag::try_from_utf8(id)
.map(icu_time::TimeZone)
.map(TimeZone)
.map(Box::new)
.unwrap_or(Self::unknown())
}
#[diplomat::rust_link(icu::time::TimeZone::with_offset, FnInStruct)]
pub fn with_offset(&self, offset: &UtcOffset) -> Box<TimeZoneInfo> {
Box::new(self.0.with_offset(Some(offset.0)).into())
}
#[diplomat::rust_link(icu::time::TimeZone::without_offset, FnInStruct)]
pub fn without_offset(&self) -> Box<TimeZoneInfo> {
Box::new(self.0.without_offset().into())
}
}
#[diplomat::enum_convert(icu_time::zone::TimeZoneVariant, needs_wildcard)]
pub enum TimeZoneVariant {
Standard,
Daylight,
}
impl TimeZoneVariant {
/// Sets the `variant` field to "daylight" time.
#[diplomat::rust_link(icu::time::zone::TimeZoneVariant::from_rearguard_isdst, FnInEnum)]
#[diplomat::rust_link(icu::time::TimeZoneInfo::with_variant, FnInStruct)]
#[diplomat::rust_link(icu::time::zone::TimeZoneVariant, Enum, compact)]
pub fn from_rearguard_isdst(&mut self, isdst: bool) -> Self {
icu_time::zone::TimeZoneVariant::from_rearguard_isdst(isdst).into()
}
}
#[diplomat::opaque]
#[diplomat::rust_link(icu::time::TimeZoneInfo, Struct)]
#[diplomat::rust_link(icu::time::zone::models::AtTime, Struct, hidden)]
#[diplomat::rust_link(icu::time::zone::models::Base, Struct, hidden)]
#[diplomat::rust_link(icu::time::zone::models::Full, Struct, hidden)]
pub struct TimeZoneInfo {
pub(crate) id: icu_time::TimeZone,
pub(crate) offset: Option<icu_time::zone::UtcOffset>,
pub(crate) variant: Option<icu_time::zone::TimeZoneVariant>,
pub(crate) zone_name_timestamp: Option<icu_time::zone::ZoneNameTimestamp>,
}
impl TimeZoneInfo {
/// Creates a time zone for UTC (Coordinated Universal Time).
#[diplomat::rust_link(icu::time::TimeZoneInfo::utc, FnInStruct)]
#[diplomat::rust_link(icu::time::zone::UtcOffset::zero, FnInStruct, hidden)]
#[diplomat::attr(auto, named_constructor)]
pub fn utc() -> Box<TimeZoneInfo> {
Box::new(icu_time::TimeZoneInfo::utc().into())
}
/// Creates a time zone info from parts.
#[diplomat::attr(auto, constructor)]
pub fn from_parts(
id: &TimeZone,
offset: Option<&UtcOffset>,
variant: Option<TimeZoneVariant>,
) -> Box<TimeZoneInfo> {
Box::new(Self {
id: id.0,
offset: offset.map(|o| o.0),
variant: variant.map(Into::into),
zone_name_timestamp: None,
})
}
#[diplomat::rust_link(icu::time::TimeZoneInfo::id, FnInStruct)]
pub fn id(&self) -> Box<TimeZone> {
Box::new(TimeZone(self.id))
}
/// Sets the datetime at which to interpret the time zone
/// for display name lookup.
///
/// Notes:
///
/// - If not set, the formatting datetime is used if possible.
/// - The constraints are the same as with `ZoneNameTimestamp` in Rust.
/// - Set to year 1000 or 9999 for a reference far in the past or future.
#[diplomat::rust_link(icu::time::TimeZoneInfo::at_date_time_iso, FnInStruct)]
#[diplomat::rust_link(icu::time::zone::ZoneNameTimestamp, Struct, compact)]
#[diplomat::rust_link(
icu::time::TimeZoneInfo::with_zone_name_timestamp,
FnInStruct,
hidden
)]
#[diplomat::rust_link(
icu::time::zone::ZoneNameTimestamp::from_date_time_iso,
FnInStruct,
hidden
)]
#[diplomat::rust_link(
icu::time::zone::ZoneNameTimestamp::far_in_future,
FnInStruct,
hidden
)] // documented
#[diplomat::rust_link(icu::time::zone::ZoneNameTimestamp::far_in_past, FnInStruct, hidden)] // documented
pub fn at_date_time_iso(&self, date: &IsoDate, time: &Time) -> Box<Self> {
Box::new(Self {
zone_name_timestamp: Some(icu_time::zone::ZoneNameTimestamp::from_date_time_iso(
icu_time::DateTime {
date: date.0,
time: time.0,
},
)),
..*self
})
}
#[diplomat::rust_link(icu::time::TimeZoneInfo::zone_name_timestamp, FnInStruct)]
#[diplomat::rust_link(
icu::time::zone::ZoneNameTimestamp::to_date_time_iso,
FnInStruct,
hidden
)]
pub fn zone_name_date_time(&self) -> Option<IsoDateTime> {
let datetime = self.zone_name_timestamp?.to_date_time_iso();
Some(IsoDateTime {
date: Box::new(IsoDate(datetime.date)),
time: Box::new(Time(datetime.time)),
})
}
#[diplomat::rust_link(icu::time::TimeZoneInfo::with_variant, FnInStruct)]
pub fn with_variant(&self, time_variant: TimeZoneVariant) -> Box<Self> {
Box::new(Self {
variant: Some(time_variant.into()),
..*self
})
}
/// Infers the zone variant.
///
/// Requires the offset and local time to be set.
#[diplomat::rust_link(icu::time::TimeZoneInfo::infer_variant, FnInStruct)]
#[diplomat::rust_link(icu::time::zone::TimeZoneVariant, Enum, compact)]
pub fn infer_variant(
&mut self,
offset_calculator: &VariantOffsetsCalculator,
) -> Option<()> {
let info = self
.id
.with_offset(self.offset)
.with_zone_name_timestamp(self.zone_name_timestamp?)
.infer_variant(offset_calculator.0.as_borrowed());
self.id = info.id();
self.variant = Some(info.variant());
Some(())
}
#[diplomat::rust_link(icu::time::TimeZoneInfo::variant, FnInStruct)]
pub fn variant(&self) -> Option<TimeZoneVariant> {
self.variant.map(Into::into)
}
}
}
impl From<icu_time::zone::UtcOffset> for TimeZoneInfo {
fn from(other: icu_time::zone::UtcOffset) -> Self {
Self {
id: icu_time::TimeZone::UNKNOWN,
offset: Some(other),
variant: None,
zone_name_timestamp: None,
}
}
}
impl From<icu_time::TimeZoneInfo<icu_time::zone::models::Base>> for TimeZoneInfo {
fn from(other: icu_time::TimeZoneInfo<icu_time::zone::models::Base>) -> Self {
Self {
id: other.id(),
offset: other.offset(),
variant: None,
zone_name_timestamp: None,
}
}
}
impl From<icu_time::TimeZoneInfo<icu_time::zone::models::AtTime>> for TimeZoneInfo {
fn from(other: icu_time::TimeZoneInfo<icu_time::zone::models::AtTime>) -> Self {
Self {
id: other.id(),
offset: other.offset(),
variant: None,
zone_name_timestamp: Some(other.zone_name_timestamp()),
}
}
}
impl From<icu_time::TimeZoneInfo<icu_time::zone::models::Full>> for TimeZoneInfo {
fn from(other: icu_time::TimeZoneInfo<icu_time::zone::models::Full>) -> Self {
Self {
id: other.id(),
offset: other.offset(),
variant: Some(other.variant()),
zone_name_timestamp: Some(other.zone_name_timestamp()),
}
}
}