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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 ).
use super::{
DateTimePattern, DateTimePatternFormatter, GetNameForDayPeriodError, GetNameForMonthError,
GetNameForWeekdayError, GetSymbolForCyclicYearError, GetSymbolForEraError,
MonthPlaceholderValue, PatternLoadError,
};
use crate::fields::{self, FieldLength, FieldSymbol};
use crate::fieldsets::enums::CompositeDateTimeFieldSet;
use crate::input;
use crate::provider::neo::*;
use crate::provider::pattern::PatternItem;
use crate::provider::time_zones::tz;
use crate::scaffold::*;
use crate::size_test_macro::size_test;
use crate::{external_loaders::*, DateTimeFormatterPreferences};
use core::fmt;
use core::marker::PhantomData;
use core::num::NonZeroU8;
use icu_calendar::types::FormattingEra;
use icu_calendar::types::MonthCode;
use icu_decimal::options::FixedDecimalFormatterOptions;
use icu_decimal::options::GroupingStrategy;
use icu_decimal::provider::{DecimalDigitsV1Marker, DecimalSymbolsV2Marker};
use icu_decimal::FixedDecimalFormatter;
use icu_provider::prelude::*;
pub struct EmptyDataProvider;
impl<M> DataProvider<M> for EmptyDataProvider
where
M: DataMarker,
{
fn load(&self, base_req: DataRequest) -> Result<DataResponse<M>, DataError> {
Err(DataErrorKind::MarkerNotFound.with_req(M::INFO, base_req))
}
}
size_test!(
TypedDateTimeNames<icu_calendar::Gregorian>,
typed_date_time_names_size,
328
);
/// A low-level type that formats datetime patterns with localized names.
/// The calendar should be chosen at compile time.
#[doc = typed_date_time_names_size!()]
///
/// Type parameters:
///
/// 1. The calendar chosen at compile time for additional type safety
/// 2. A components object type containing the fields that might be formatted
///
/// By default, the components object is set to [`CompositeDateTimeFieldSet`],
/// meaning that dates and times, but not time zones, are supported. A smaller
/// components object results in smaller stack size.
///
/// To support all fields including time zones, use [`CompositeFieldSet`].
///
/// [`CompositeFieldSet`]: crate::fieldsets::enums::CompositeFieldSet
/// [`CompositeDateTimeFieldSet`]: crate::fieldsets::enums::CompositeDateTimeFieldSet
///
/// # Examples
///
/// ```
/// use icu::calendar::Gregorian;
/// use icu::calendar::DateTime;
/// use icu::datetime::pattern::TypedDateTimeNames;
/// use icu::datetime::fields::FieldLength;
/// use icu::datetime::fields;
/// use icu::datetime::pattern::DateTimePattern;
/// use icu::locale::locale;
/// use writeable::assert_try_writeable_eq;
///
/// // Create an instance that can format abbreviated month, weekday, and day period names:
/// let mut names: TypedDateTimeNames<Gregorian> =
/// TypedDateTimeNames::try_new(locale!("uk").into()).unwrap();
/// names
/// .include_month_names(fields::Month::Format, FieldLength::Three)
/// .unwrap()
/// .include_weekday_names(fields::Weekday::Format, FieldLength::Three)
/// .unwrap()
/// .include_day_period_names(FieldLength::Three)
/// .unwrap();
///
/// // Create a pattern from a pattern string (note: K is the hour with h11 hour cycle):
/// let pattern_str = "E MMM d y -- K:mm a";
/// let pattern: DateTimePattern = pattern_str.parse().unwrap();
///
/// // Test it:
/// let datetime = DateTime::try_new_gregorian(2023, 11, 20, 12, 35, 3).unwrap();
/// assert_try_writeable_eq!(names.with_pattern_unchecked(&pattern).format(&datetime), "пн лист. 20 2023 -- 0:35 пп");
/// ```
///
/// If the correct data is not loaded, and error will occur:
///
/// ```
/// use icu::calendar::Gregorian;
/// use icu::calendar::{Date, Time};
/// use icu::datetime::DateTimeWriteError;
/// use icu::datetime::parts;
/// use icu::datetime::pattern::TypedDateTimeNames;
/// use icu::datetime::fields::{Field, FieldLength, FieldSymbol, Weekday};
/// use icu::datetime::pattern::{DateTimePattern, PatternLoadError};
/// use icu::datetime::fieldsets::enums::CompositeFieldSet;
/// use icu::locale::locale;
/// use icu::timezone::{TimeZoneInfo, IxdtfParser};
/// use icu_provider_adapters::empty::EmptyDataProvider;
/// use writeable::{Part, assert_try_writeable_parts_eq};
///
/// // Create an instance that can format all fields (CompositeFieldSet):
/// let mut names: TypedDateTimeNames<Gregorian, CompositeFieldSet> =
/// TypedDateTimeNames::try_new(locale!("en").into()).unwrap();
///
/// // Create a pattern from a pattern string:
/// let pattern_str = "'It is:' E MMM d y G 'at' h:mm:ssSSS a zzzz";
/// let pattern: DateTimePattern = pattern_str.parse().unwrap();
///
/// // The pattern string contains lots of symbols including "E", "MMM", and "a",
/// // but we did not load any data!
///
/// let mut dtz = IxdtfParser::new().try_from_str("2023-11-20T11:35:03+00:00[Europe/London]").unwrap().to_calendar(Gregorian);
///
/// // Missing data is filled in on a best-effort basis, and an error is signaled.
/// assert_try_writeable_parts_eq!(
/// names.with_pattern_unchecked(&pattern).format(&dtz),
/// "It is: mon M11 20 2023 CE at 11:35:03.000 AM +0000",
/// Err(DateTimeWriteError::NamesNotLoaded(Field { symbol: FieldSymbol::Weekday(Weekday::Format), length: FieldLength::One })),
/// [
/// (7, 10, Part::ERROR), // mon
/// (7, 10, parts::WEEKDAY), // mon
/// (11, 14, Part::ERROR), // M11
/// (11, 14, parts::MONTH), // M11
/// (15, 17, icu::decimal::parts::INTEGER), // 20
/// (15, 17, parts::DAY), // 20
/// (18, 22, icu::decimal::parts::INTEGER), // 2023
/// (18, 22, parts::YEAR), // 2023
/// (23, 25, Part::ERROR), // CE
/// (23, 25, parts::ERA), // CE
/// (29, 31, icu::decimal::parts::INTEGER), // 11
/// (29, 31, parts::HOUR), // 11
/// (32, 34, icu::decimal::parts::INTEGER), // 35
/// (32, 34, parts::MINUTE), // 35
/// (35, 41, parts::SECOND), // 03.000
/// (35, 37, icu::decimal::parts::INTEGER), // 03
/// (37, 38, icu::decimal::parts::DECIMAL), // .
/// (38, 41, icu::decimal::parts::FRACTION), // 000
/// (42, 44, Part::ERROR), // AM
/// (42, 44, parts::DAY_PERIOD), // AM
/// (45, 50, Part::ERROR), // +0000
/// (45, 50, parts::TIME_ZONE_NAME), // +0000
/// ]
/// );
///
/// // To make the error occur sooner, one can use an EmptyDataProvider:
/// let empty = EmptyDataProvider::new();
/// assert!(matches!(
/// names.load_for_pattern(&empty, &pattern),
/// Err(PatternLoadError::Data(_, Field { symbol: FieldSymbol::Weekday(_), .. })),
/// ));
/// ```
///
/// If the pattern contains fields inconsistent with the receiver, an error will occur:
///
/// ```
/// use icu::calendar::Gregorian;
/// use icu::calendar::DateTime;
/// use icu::datetime::DateTimeWriteError;
/// use icu::datetime::parts;
/// use icu::datetime::pattern::TypedDateTimeNames;
/// use icu::datetime::fields::{Field, FieldLength, FieldSymbol, Weekday};
/// use icu::datetime::pattern::DateTimePattern;
/// use icu::datetime::fieldsets::O;
/// use icu::locale::locale;
/// use icu::timezone::TimeZoneInfo;
/// use writeable::{Part, assert_try_writeable_parts_eq};
///
/// // Create an instance that can format abbreviated month, weekday, and day period names:
/// let mut names: TypedDateTimeNames<Gregorian, O> =
/// TypedDateTimeNames::try_new(locale!("en").into()).unwrap();
///
/// // Create a pattern from a pattern string:
/// let pattern_str = "'It is:' E MMM d y G 'at' h:mm:ssSSS a zzzz";
/// let pattern: DateTimePattern = pattern_str.parse().unwrap();
///
/// // The pattern string contains lots of symbols including "E", "MMM", and "a",
/// // but the `TypedDateTimeNames` is configured to format only time zones!
/// // Further, the time zone we provide doesn't contain any offset into!
/// // Missing data is filled in on a best-effort basis, and an error is signaled.
/// assert_try_writeable_parts_eq!(
/// names.with_pattern_unchecked(&pattern).format(&TimeZoneInfo::unknown()),
/// "It is: {E} {M} {d} {y} {G} at {h}:{m}:{s} {a} {z}",
/// Err(DateTimeWriteError::MissingInputField("iso_weekday")),
/// [
/// (7, 10, Part::ERROR), // {E}
/// (7, 10, parts::WEEKDAY), // {E}
/// (11, 14, Part::ERROR), // {M}
/// (11, 14, parts::MONTH), // {M}
/// (15, 18, Part::ERROR), // {d}
/// (15, 18, parts::DAY), // {d}
/// (19, 22, Part::ERROR), // {y}
/// (19, 22, parts::YEAR), // {y}
/// (23, 26, Part::ERROR), // {G}
/// (23, 26, parts::ERA), // {G}
/// (30, 33, Part::ERROR), // {h}
/// (30, 33, parts::HOUR), // {h}
/// (34, 37, Part::ERROR), // {m}
/// (34, 37, parts::MINUTE), // {m}
/// (38, 41, Part::ERROR), // {s}
/// (38, 41, parts::SECOND), // {s}
/// (42, 45, Part::ERROR), // {a}
/// (42, 45, parts::DAY_PERIOD), // {a}
/// (46, 49, Part::ERROR), // {z}
/// (46, 49, parts::TIME_ZONE_NAME), // {z}
/// ]
/// );
/// ```
#[derive(Debug)]
pub struct TypedDateTimeNames<
C: CldrCalendar,
FSet: DateTimeNamesMarker = CompositeDateTimeFieldSet,
> {
prefs: DateTimeFormatterPreferences,
inner: RawDateTimeNames<FSet>,
_calendar: PhantomData<C>,
}
pub(crate) struct RawDateTimeNames<FSet: DateTimeNamesMarker> {
year_names: <FSet::YearNames as NamesContainer<YearNamesV1Marker, FieldLength>>::Container,
month_names: <FSet::MonthNames as NamesContainer<
MonthNamesV1Marker,
(fields::Month, FieldLength),
>>::Container,
weekday_names: <FSet::WeekdayNames as NamesContainer<
WeekdayNamesV1Marker,
(fields::Weekday, FieldLength),
>>::Container,
dayperiod_names:
<FSet::DayPeriodNames as NamesContainer<DayPeriodNamesV1Marker, FieldLength>>::Container,
zone_essentials:
<FSet::ZoneEssentials as NamesContainer<tz::EssentialsV1Marker, ()>>::Container,
locations_root: <FSet::ZoneLocations as NamesContainer<tz::LocationsV1Marker, ()>>::Container,
locations: <FSet::ZoneLocations as NamesContainer<tz::LocationsV1Marker, ()>>::Container,
mz_generic_long:
<FSet::ZoneGenericLong as NamesContainer<tz::MzGenericLongV1Marker, ()>>::Container,
mz_generic_short:
<FSet::ZoneGenericShort as NamesContainer<tz::MzGenericShortV1Marker, ()>>::Container,
mz_specific_long:
<FSet::ZoneSpecificLong as NamesContainer<tz::MzSpecificLongV1Marker, ()>>::Container,
mz_specific_short:
<FSet::ZoneSpecificShort as NamesContainer<tz::MzSpecificShortV1Marker, ()>>::Container,
mz_periods: <FSet::MetazoneLookup as NamesContainer<tz::MzPeriodV1Marker, ()>>::Container,
// TODO(#4340): Make the FixedDecimalFormatter optional
fixed_decimal_formatter: Option<FixedDecimalFormatter>,
_marker: PhantomData<FSet>,
}
// Need a custom impl because not all of the associated types impl Debug
impl<FSet: DateTimeNamesMarker> fmt::Debug for RawDateTimeNames<FSet> {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
f.debug_struct("RawDateTimeNames")
.field("year_names", &self.year_names)
.field("month_names", &self.month_names)
.field("weekday_names", &self.weekday_names)
.field("dayperiod_names", &self.dayperiod_names)
.field("zone_essentials", &self.zone_essentials)
.field("locations", &self.locations)
.field("mz_generic_long", &self.mz_generic_long)
.field("mz_generic_short", &self.mz_generic_short)
.field("mz_specific_long", &self.mz_specific_long)
.field("mz_specific_short", &self.mz_specific_short)
.field("fixed_decimal_formatter", &self.fixed_decimal_formatter)
.finish()
}
}
impl<FSet: DateTimeNamesMarker> RawDateTimeNames<FSet> {
pub(crate) fn with_fset<FSet2: DateTimeNamesFrom<FSet>>(self) -> RawDateTimeNames<FSet2> {
RawDateTimeNames {
year_names: FSet2::map_year_names(self.year_names),
month_names: FSet2::map_month_names(self.month_names),
weekday_names: FSet2::map_weekday_names(self.weekday_names),
dayperiod_names: FSet2::map_day_period_names(self.dayperiod_names),
zone_essentials: FSet2::map_zone_essentials(self.zone_essentials),
locations_root: FSet2::map_zone_locations(self.locations_root),
locations: FSet2::map_zone_locations(self.locations),
mz_generic_long: FSet2::map_zone_generic_long(self.mz_generic_long),
mz_generic_short: FSet2::map_zone_generic_short(self.mz_generic_short),
mz_specific_long: FSet2::map_zone_specific_long(self.mz_specific_long),
mz_specific_short: FSet2::map_zone_specific_short(self.mz_specific_short),
mz_periods: FSet2::map_metazone_lookup(self.mz_periods),
fixed_decimal_formatter: self.fixed_decimal_formatter,
_marker: PhantomData,
}
}
}
#[derive(Debug, Copy, Clone)]
pub(crate) struct RawDateTimeNamesBorrowed<'l> {
year_names: OptionalNames<FieldLength, &'l YearNamesV1<'l>>,
month_names: OptionalNames<(fields::Month, FieldLength), &'l MonthNamesV1<'l>>,
weekday_names: OptionalNames<(fields::Weekday, FieldLength), &'l LinearNamesV1<'l>>,
dayperiod_names: OptionalNames<FieldLength, &'l LinearNamesV1<'l>>,
zone_essentials: OptionalNames<(), &'l tz::EssentialsV1<'l>>,
locations_root: OptionalNames<(), &'l tz::LocationsV1<'l>>,
locations: OptionalNames<(), &'l tz::LocationsV1<'l>>,
mz_generic_long: OptionalNames<(), &'l tz::MzGenericV1<'l>>,
mz_generic_short: OptionalNames<(), &'l tz::MzGenericV1<'l>>,
mz_specific_long: OptionalNames<(), &'l tz::MzSpecificV1<'l>>,
mz_specific_short: OptionalNames<(), &'l tz::MzSpecificV1<'l>>,
mz_periods: OptionalNames<(), &'l tz::MzPeriodV1<'l>>,
pub(crate) fixed_decimal_formatter: Option<&'l FixedDecimalFormatter>,
}
impl<C: CldrCalendar, FSet: DateTimeNamesMarker> TypedDateTimeNames<C, FSet> {
/// Constructor that takes a selected locale and creates an empty instance.
///
/// For an example, see [`TypedDateTimeNames`].
///
/// ✨ *Enabled with the `compiled_data` Cargo feature.*
///
/// [📚 Help choosing a constructor](icu_provider::constructors)
#[cfg(feature = "compiled_data")]
pub fn try_new(prefs: DateTimeFormatterPreferences) -> Result<Self, DataError> {
let mut names = Self {
prefs,
inner: RawDateTimeNames::new_without_number_formatting(),
_calendar: PhantomData,
};
names.include_fixed_decimal_formatter()?;
Ok(names)
}
#[doc = icu_provider::gen_any_buffer_unstable_docs!(UNSTABLE, Self::try_new)]
pub fn try_new_unstable<P>(
provider: &P,
prefs: DateTimeFormatterPreferences,
) -> Result<Self, DataError>
where
P: DataProvider<DecimalSymbolsV2Marker> + DataProvider<DecimalDigitsV1Marker> + ?Sized,
{
let mut names = Self {
prefs,
inner: RawDateTimeNames::new_without_number_formatting(),
_calendar: PhantomData,
};
names.load_fixed_decimal_formatter(provider)?;
Ok(names)
}
/// Creates a completely empty instance, not even with number formatting.
///
/// # Examples
///
/// Errors occur if a number formatter is not loaded but one is required:
///
/// ```
/// use icu::calendar::Gregorian;
/// use icu::calendar::Date;
/// use icu::datetime::parts;
/// use icu::datetime::DateTimeWriteError;
/// use icu::datetime::pattern::TypedDateTimeNames;
/// use icu::datetime::fields::{Field, FieldLength, FieldSymbol, Weekday};
/// use icu::datetime::pattern::DateTimePattern;
/// use icu::datetime::fieldsets::enums::DateFieldSet;
/// use icu::locale::locale;
/// use writeable::{Part, assert_try_writeable_parts_eq};
///
/// // Create an instance that can format only date fields:
/// let names: TypedDateTimeNames<Gregorian, DateFieldSet> =
/// TypedDateTimeNames::new_without_number_formatting(locale!("en").into());
///
/// // Create a pattern from a pattern string:
/// let pattern_str = "'It is:' y-MM-dd";
/// let pattern: DateTimePattern = pattern_str.parse().unwrap();
///
/// // The pattern string contains lots of numeric symbols,
/// // but we did not load any data!
///
/// let date = Date::try_new_gregorian(2024, 7, 1).unwrap();
///
/// // Missing data is filled in on a best-effort basis, and an error is signaled.
/// // (note that the padding is ignored in this fallback mode)
/// assert_try_writeable_parts_eq!(
/// names.with_pattern_unchecked(&pattern).format(&date),
/// "It is: 2024-07-01",
/// Err(DateTimeWriteError::FixedDecimalFormatterNotLoaded),
/// [
/// (7, 11, Part::ERROR), // 2024
/// (7, 11, parts::YEAR), // 2024
/// (12, 14, Part::ERROR), // 07
/// (12, 14, parts::MONTH), // 07
/// (15, 17, Part::ERROR), // 01
/// (15, 17, parts::DAY), // 01
/// ]
/// );
/// ```
pub fn new_without_number_formatting(prefs: DateTimeFormatterPreferences) -> Self {
Self {
prefs,
inner: RawDateTimeNames::new_without_number_formatting(),
_calendar: PhantomData,
}
}
/// Loads year (era or cycle) names for the specified length.
///
/// Does not support multiple field symbols or lengths. See #4337
pub fn load_year_names<P>(
&mut self,
provider: &P,
field_length: FieldLength,
) -> Result<&mut Self, PatternLoadError>
where
P: DataProvider<C::YearNamesV1Marker> + ?Sized,
{
self.inner.load_year_names(
&C::YearNamesV1Marker::bind(provider),
self.prefs,
field_length,
)?;
Ok(self)
}
/// Includes year (era or cycle) names for the specified length.
///
/// Does not support multiple field symbols or lengths. See #4337
///
/// # Examples
///
/// ```
/// use icu::calendar::Gregorian;
/// use icu::datetime::fields::FieldLength;
/// use icu::datetime::pattern::PatternLoadError;
/// use icu::datetime::pattern::TypedDateTimeNames;
/// use icu::locale::locale;
///
/// let mut names =
/// TypedDateTimeNames::<Gregorian>::try_new(locale!("und").into())
/// .unwrap();
///
/// // First length is successful:
/// names.include_year_names(FieldLength::Four).unwrap();
///
/// // Attempting to load the first length a second time will succeed:
/// names.include_year_names(FieldLength::Four).unwrap();
///
/// // But loading a new length fails:
/// assert!(matches!(
/// names.include_year_names(FieldLength::Three),
/// Err(PatternLoadError::ConflictingField(_))
/// ));
/// ```
#[cfg(feature = "compiled_data")]
pub fn include_year_names(
&mut self,
field_length: FieldLength,
) -> Result<&mut Self, PatternLoadError>
where
crate::provider::Baked: icu_provider::DataProvider<<C as CldrCalendar>::YearNamesV1Marker>,
{
self.load_year_names(&crate::provider::Baked, field_length)
}
/// Loads month names for the specified symbol and length.
///
/// Does not support multiple field symbols or lengths. See #4337
pub fn load_month_names<P>(
&mut self,
provider: &P,
field_symbol: fields::Month,
field_length: FieldLength,
) -> Result<&mut Self, PatternLoadError>
where
P: DataProvider<C::MonthNamesV1Marker> + ?Sized,
{
self.inner.load_month_names(
&C::MonthNamesV1Marker::bind(provider),
self.prefs,
field_symbol,
field_length,
)?;
Ok(self)
}
/// Includes month names for the specified symbol and length.
///
/// Does not support multiple field symbols or lengths. See #4337
///
/// # Examples
///
/// ```
/// use icu::calendar::Gregorian;
/// use icu::datetime::fields::FieldLength;
/// use icu::datetime::pattern::PatternLoadError;
/// use icu::datetime::pattern::TypedDateTimeNames;
/// use icu::locale::locale;
///
/// let mut names =
/// TypedDateTimeNames::<Gregorian>::try_new(locale!("und").into())
/// .unwrap();
/// let field_symbol = icu::datetime::fields::Month::Format;
/// let alt_field_symbol = icu::datetime::fields::Month::StandAlone;
///
/// // First length is successful:
/// names
/// .include_month_names(field_symbol, FieldLength::Four)
/// .unwrap();
///
/// // Attempting to load the first length a second time will succeed:
/// names
/// .include_month_names(field_symbol, FieldLength::Four)
/// .unwrap();
///
/// // But loading a new symbol or length fails:
/// assert!(matches!(
/// names.include_month_names(alt_field_symbol, FieldLength::Four),
/// Err(PatternLoadError::ConflictingField(_))
/// ));
/// assert!(matches!(
/// names.include_month_names(field_symbol, FieldLength::Three),
/// Err(PatternLoadError::ConflictingField(_))
/// ));
/// ```
#[cfg(feature = "compiled_data")]
pub fn include_month_names(
&mut self,
field_symbol: fields::Month,
field_length: FieldLength,
) -> Result<&mut Self, PatternLoadError>
where
crate::provider::Baked: icu_provider::DataProvider<<C as CldrCalendar>::MonthNamesV1Marker>,
{
self.load_month_names(&crate::provider::Baked, field_symbol, field_length)
}
/// Loads day period names for the specified length.
///
/// Does not support multiple field symbols or lengths. See #4337
pub fn load_day_period_names<P>(
&mut self,
provider: &P,
field_length: FieldLength,
) -> Result<&mut Self, PatternLoadError>
where
P: DataProvider<DayPeriodNamesV1Marker> + ?Sized,
{
let provider = DayPeriodNamesV1Marker::bind(provider);
self.inner
.load_day_period_names(&provider, self.prefs, field_length)?;
Ok(self)
}
/// Includes day period names for the specified length.
///
/// Does not support multiple field symbols or lengths. See #4337
///
/// # Examples
///
/// ```
/// use icu::calendar::Gregorian;
/// use icu::datetime::fields::FieldLength;
/// use icu::datetime::pattern::PatternLoadError;
/// use icu::datetime::pattern::TypedDateTimeNames;
/// use icu::locale::locale;
///
/// let mut names =
/// TypedDateTimeNames::<Gregorian>::try_new(locale!("und").into())
/// .unwrap();
///
/// // First length is successful:
/// names.include_day_period_names(FieldLength::Four).unwrap();
///
/// // Attempting to load the first length a second time will succeed:
/// names.include_day_period_names(FieldLength::Four).unwrap();
///
/// // But loading a new length fails:
/// assert!(matches!(
/// names.include_day_period_names(FieldLength::Three),
/// Err(PatternLoadError::ConflictingField(_))
/// ));
/// ```
#[cfg(feature = "compiled_data")]
pub fn include_day_period_names(
&mut self,
field_length: FieldLength,
) -> Result<&mut Self, PatternLoadError>
where
crate::provider::Baked: icu_provider::DataProvider<DayPeriodNamesV1Marker>,
{
self.load_day_period_names(&crate::provider::Baked, field_length)
}
/// Loads weekday names for the specified symbol and length.
///
/// Does not support multiple field symbols or lengths. See #4337
pub fn load_weekday_names<P>(
&mut self,
provider: &P,
field_symbol: fields::Weekday,
field_length: FieldLength,
) -> Result<&mut Self, PatternLoadError>
where
P: DataProvider<WeekdayNamesV1Marker> + ?Sized,
{
self.inner.load_weekday_names(
&WeekdayNamesV1Marker::bind(provider),
self.prefs,
field_symbol,
field_length,
)?;
Ok(self)
}
/// Includes weekday names for the specified symbol and length.
///
/// Does not support multiple field symbols or lengths. See #4337
///
/// # Examples
///
/// ```
/// use icu::calendar::Gregorian;
/// use icu::datetime::fields::FieldLength;
/// use icu::datetime::pattern::PatternLoadError;
/// use icu::datetime::pattern::TypedDateTimeNames;
/// use icu::locale::locale;
///
/// let mut names =
/// TypedDateTimeNames::<Gregorian>::try_new(locale!("und").into())
/// .unwrap();
/// let field_symbol = icu::datetime::fields::Weekday::Format;
/// let alt_field_symbol = icu::datetime::fields::Weekday::StandAlone;
///
/// // First length is successful:
/// names
/// .include_weekday_names(field_symbol, FieldLength::Four)
/// .unwrap();
///
/// // Attempting to load the first length a second time will succeed:
/// names
/// .include_weekday_names(field_symbol, FieldLength::Four)
/// .unwrap();
///
/// // But loading a new symbol or length fails:
/// assert!(matches!(
/// names.include_weekday_names(alt_field_symbol, FieldLength::Four),
/// Err(PatternLoadError::ConflictingField(_))
/// ));
/// assert!(matches!(
/// names.include_weekday_names(field_symbol, FieldLength::Three),
/// Err(PatternLoadError::ConflictingField(_))
/// ));
/// ```
#[cfg(feature = "compiled_data")]
pub fn include_weekday_names(
&mut self,
field_symbol: fields::Weekday,
field_length: FieldLength,
) -> Result<&mut Self, PatternLoadError>
where
crate::provider::Baked: icu_provider::DataProvider<WeekdayNamesV1Marker>,
{
self.load_weekday_names(&crate::provider::Baked, field_symbol, field_length)
}
/// Loads shared essential patterns for time zone formatting.
pub fn load_time_zone_essentials<P>(
&mut self,
provider: &P,
) -> Result<&mut Self, PatternLoadError>
where
P: DataProvider<tz::EssentialsV1Marker> + ?Sized,
{
self.inner
.load_time_zone_essentials(&tz::EssentialsV1Marker::bind(provider), self.prefs)?;
Ok(self)
}
/// Includes shared essential patterns for time zone formatting.
///
/// This data should always be loaded when performing time zone formatting.
/// By itself, it allows localized offset formats.
///
/// # Examples
///
/// ```
/// use icu::calendar::Gregorian;
/// use icu::datetime::fieldsets::enums::ZoneFieldSet;
/// use icu::datetime::pattern::DateTimePattern;
/// use icu::datetime::pattern::TypedDateTimeNames;
/// use icu::locale::locale;
/// use icu::timezone::IxdtfParser;
/// use writeable::assert_try_writeable_eq;
///
/// let mut zone_london_winter = IxdtfParser::new()
/// .try_from_str("2024-01-01T00:00:00+00:00[Europe/London]")
/// .unwrap()
/// .zone;
/// let mut zone_london_summer = IxdtfParser::new()
/// .try_from_str("2024-07-01T00:00:00+01:00[Europe/London]")
/// .unwrap()
/// .zone;
///
/// let mut names = TypedDateTimeNames::<Gregorian, ZoneFieldSet>::try_new(
/// locale!("en-GB").into(),
/// )
/// .unwrap();
///
/// names.include_time_zone_essentials().unwrap();
///
/// // Create a pattern with symbol `OOOO`:
/// let pattern_str = "'Your time zone is:' OOOO";
/// let pattern: DateTimePattern = pattern_str.parse().unwrap();
///
/// assert_try_writeable_eq!(
/// names
/// .with_pattern_unchecked(&pattern)
/// .format(&zone_london_winter),
/// "Your time zone is: GMT",
/// );
/// assert_try_writeable_eq!(
/// names
/// .with_pattern_unchecked(&pattern)
/// .format(&zone_london_summer),
/// "Your time zone is: GMT+01:00",
/// );
///
/// // Now try `V`:
/// let pattern_str = "'Your time zone is:' V";
/// let pattern: DateTimePattern = pattern_str.parse().unwrap();
///
/// assert_try_writeable_eq!(
/// names
/// .with_pattern_unchecked(&pattern)
/// .format(&zone_london_winter),
/// "Your time zone is: gblon",
/// );
///
/// // Now try `Z`:
/// let pattern_str = "'Your time zone is:' Z";
/// let pattern: DateTimePattern = pattern_str.parse().unwrap();
///
/// assert_try_writeable_eq!(
/// names
/// .with_pattern_unchecked(&pattern)
/// .format(&zone_london_winter),
/// "Your time zone is: +0000",
/// );
///
/// // Now try `ZZZZZ`:
/// let pattern_str = "'Your time zone is:' ZZZZZ";
/// let pattern: DateTimePattern = pattern_str.parse().unwrap();
///
/// assert_try_writeable_eq!(
/// names
/// .with_pattern_unchecked(&pattern)
/// .format(&zone_london_winter),
/// "Your time zone is: Z",
/// );
/// assert_try_writeable_eq!(
/// names
/// .with_pattern_unchecked(&pattern)
/// .format(&zone_london_summer),
/// "Your time zone is: +01:00",
/// );
/// ```
#[cfg(feature = "compiled_data")]
pub fn include_time_zone_essentials(&mut self) -> Result<&mut Self, PatternLoadError>
where
crate::provider::Baked: icu_provider::DataProvider<tz::EssentialsV1Marker>,
{
self.load_time_zone_essentials(&crate::provider::Baked)
}
/// Loads location names for time zone formatting.
pub fn load_time_zone_location_names<P>(
&mut self,
provider: &P,
) -> Result<&mut Self, PatternLoadError>
where
P: DataProvider<tz::LocationsV1Marker> + ?Sized,
{
self.inner
.load_time_zone_location_names(&tz::LocationsV1Marker::bind(provider), self.prefs)?;
Ok(self)
}
/// Includes location names for time zone formatting.
///
/// Important: When performing manual time zone data loading, in addition to the
/// specific time zone format data, also call either:
///
/// - [`TypedDateTimeNames::include_time_zone_essentials`]
/// - [`TypedDateTimeNames::load_time_zone_essentials`]
///
/// # Examples
///
/// ```
/// use icu::calendar::Gregorian;
/// use icu::datetime::fieldsets::enums::ZoneFieldSet;
/// use icu::datetime::pattern::DateTimePattern;
/// use icu::datetime::pattern::TypedDateTimeNames;
/// use icu::locale::locale;
/// use icu::timezone::IxdtfParser;
/// use writeable::assert_try_writeable_eq;
///
/// let mut zone_london_winter = IxdtfParser::new()
/// .try_from_str("2024-01-01T00:00:00+00:00[Europe/London]")
/// .unwrap()
/// .zone;
///
/// let mut names = TypedDateTimeNames::<Gregorian, ZoneFieldSet>::try_new(
/// locale!("en-GB").into(),
/// )
/// .unwrap();
///
/// names.include_time_zone_essentials().unwrap();
/// names.include_time_zone_location_names().unwrap();
///
/// // Try `VVVV`:
/// let pattern_str = "'Your time zone is:' VVVV";
/// let pattern: DateTimePattern = pattern_str.parse().unwrap();
///
/// assert_try_writeable_eq!(
/// names
/// .with_pattern_unchecked(&pattern)
/// .format(&zone_london_winter),
/// "Your time zone is: UK Time",
/// );
/// ```
#[cfg(feature = "compiled_data")]
pub fn include_time_zone_location_names(&mut self) -> Result<&mut Self, PatternLoadError>
where
crate::provider::Baked: icu_provider::DataProvider<tz::MzGenericShortV1Marker>,
{
self.load_time_zone_location_names(&crate::provider::Baked)
}
/// Loads generic non-location long time zone names.
pub fn load_time_zone_generic_long_names<P>(
&mut self,
provider: &P,
) -> Result<&mut Self, PatternLoadError>
where
P: DataProvider<tz::MzGenericLongV1Marker> + DataProvider<tz::MzPeriodV1Marker> + ?Sized,
{
self.inner.load_time_zone_generic_long_names(
&tz::MzGenericLongV1Marker::bind(provider),
&tz::MzPeriodV1Marker::bind(provider),
self.prefs,
)?;
Ok(self)
}
/// Includes generic non-location long time zone names.
///
/// Important: When performing manual time zone data loading, in addition to the
/// specific time zone format data, also call either:
///
/// - [`TypedDateTimeNames::include_time_zone_essentials`]
/// - [`TypedDateTimeNames::load_time_zone_essentials`]
///
/// # Examples
///
/// ```
/// use icu::calendar::Gregorian;
/// use icu::datetime::fieldsets::enums::ZoneFieldSet;
/// use icu::datetime::pattern::DateTimePattern;
/// use icu::datetime::pattern::TypedDateTimeNames;
/// use icu::locale::locale;
/// use icu::timezone::IxdtfParser;
/// use writeable::assert_try_writeable_eq;
///
/// let mut zone_london_winter = IxdtfParser::new()
/// .try_from_str("2024-01-01T00:00:00+00:00[Europe/London]")
/// .unwrap()
/// .zone;
/// let mut zone_london_summer = IxdtfParser::new()
/// .try_from_str("2024-07-01T00:00:00+01:00[Europe/London]")
/// .unwrap()
/// .zone;
///
/// let mut names = TypedDateTimeNames::<Gregorian, ZoneFieldSet>::try_new(
/// locale!("en-GB").into(),
/// )
/// .unwrap();
///
/// names.include_time_zone_essentials().unwrap();
/// names.include_time_zone_generic_long_names().unwrap();
///
/// // Create a pattern with symbol `vvvv`:
/// let pattern_str = "'Your time zone is:' vvvv";
/// let pattern: DateTimePattern = pattern_str.parse().unwrap();
///
/// assert_try_writeable_eq!(
/// names
/// .with_pattern_unchecked(&pattern)
/// .format(&zone_london_winter),
/// "Your time zone is: Greenwich Mean Time",
/// );
/// assert_try_writeable_eq!(
/// names
/// .with_pattern_unchecked(&pattern)
/// .format(&zone_london_summer),
/// "Your time zone is: Greenwich Mean Time", // TODO
/// );
/// ```
#[cfg(feature = "compiled_data")]
pub fn include_time_zone_generic_long_names(&mut self) -> Result<&mut Self, PatternLoadError>
where
crate::provider::Baked: icu_provider::DataProvider<tz::MzGenericLongV1Marker>,
{
self.load_time_zone_generic_long_names(&crate::provider::Baked)
}
/// Loads generic non-location short time zone names.
pub fn load_time_zone_generic_short_names<P>(
&mut self,
provider: &P,
) -> Result<&mut Self, PatternLoadError>
where
P: DataProvider<tz::MzGenericShortV1Marker> + DataProvider<tz::MzPeriodV1Marker> + ?Sized,
{
self.inner.load_time_zone_generic_short_names(
&tz::MzGenericShortV1Marker::bind(provider),
&tz::MzPeriodV1Marker::bind(provider),
self.prefs,
)?;
Ok(self)
}
/// Includes generic non-location short time zone names.
///
/// Important: When performing manual time zone data loading, in addition to the
/// specific time zone format data, also call either:
///
/// - [`TypedDateTimeNames::include_time_zone_essentials`]
/// - [`TypedDateTimeNames::load_time_zone_essentials`]
///
/// # Examples
///
/// ```
/// use icu::calendar::Gregorian;
/// use icu::datetime::fieldsets::enums::ZoneFieldSet;
/// use icu::datetime::pattern::DateTimePattern;
/// use icu::datetime::pattern::TypedDateTimeNames;
/// use icu::locale::locale;
/// use icu::timezone::IxdtfParser;
/// use writeable::assert_try_writeable_eq;
///
/// let mut zone_london_winter = IxdtfParser::new()
/// .try_from_str("2024-01-01T00:00:00+00:00[Europe/London]")
/// .unwrap()
/// .zone;
/// let mut zone_london_summer = IxdtfParser::new()
/// .try_from_str("2024-07-01T00:00:00+01:00[Europe/London]")
/// .unwrap()
/// .zone;
///
/// let mut names = TypedDateTimeNames::<Gregorian, ZoneFieldSet>::try_new(
/// locale!("en-GB").into(),
/// )
/// .unwrap();
///
/// names.include_time_zone_essentials().unwrap();
/// names.include_time_zone_generic_short_names().unwrap();
///
/// // Create a pattern with symbol `v`:
/// let pattern_str = "'Your time zone is:' v";
/// let pattern: DateTimePattern = pattern_str.parse().unwrap();
///
/// assert_try_writeable_eq!(
/// names
/// .with_pattern_unchecked(&pattern)
/// .format(&zone_london_winter),
/// "Your time zone is: GMT",
/// );
/// assert_try_writeable_eq!(
/// names
/// .with_pattern_unchecked(&pattern)
/// .format(&zone_london_summer),
/// "Your time zone is: GMT", // TODO
/// );
/// ```
#[cfg(feature = "compiled_data")]
pub fn include_time_zone_generic_short_names(&mut self) -> Result<&mut Self, PatternLoadError>
where
crate::provider::Baked: icu_provider::DataProvider<tz::MzGenericShortV1Marker>,
{
self.load_time_zone_generic_short_names(&crate::provider::Baked)
}
/// Loads specific non-location long time zone names.
pub fn load_time_zone_specific_long_names<P>(
&mut self,
provider: &P,
) -> Result<&mut Self, PatternLoadError>
where
P: DataProvider<tz::MzSpecificLongV1Marker> + DataProvider<tz::MzPeriodV1Marker> + ?Sized,
{
self.inner.load_time_zone_specific_long_names(
&tz::MzSpecificLongV1Marker::bind(provider),
&tz::MzPeriodV1Marker::bind(provider),
self.prefs,
)?;
Ok(self)
}
/// Includes specific non-location long time zone names.
///
/// Important: When performing manual time zone data loading, in addition to the
/// specific time zone format data, also call either:
///
/// - [`TypedDateTimeNames::include_time_zone_essentials`]
/// - [`TypedDateTimeNames::load_time_zone_essentials`]
///
/// # Examples
///
/// ```
/// use icu::calendar::Gregorian;
/// use icu::datetime::fieldsets::enums::ZoneFieldSet;
/// use icu::datetime::pattern::DateTimePattern;
/// use icu::datetime::pattern::TypedDateTimeNames;
/// use icu::locale::locale;
/// use icu::timezone::IxdtfParser;
/// use writeable::assert_try_writeable_eq;
///
/// let mut zone_london_winter = IxdtfParser::new()
/// .try_from_str("2024-01-01T00:00:00+00:00[Europe/London]")
/// .unwrap()
/// .zone;
/// let mut zone_london_summer = IxdtfParser::new()
/// .try_from_str("2024-07-01T00:00:00+01:00[Europe/London]")
/// .unwrap()
/// .zone;
///
/// let mut names = TypedDateTimeNames::<Gregorian, ZoneFieldSet>::try_new(
/// locale!("en-GB").into(),
/// )
/// .unwrap();
///
/// names.include_time_zone_essentials().unwrap();
/// names.include_time_zone_specific_long_names().unwrap();
///
/// // Create a pattern with symbol `zzzz`:
/// let pattern_str = "'Your time zone is:' zzzz";
/// let pattern: DateTimePattern = pattern_str.parse().unwrap();
///
/// assert_try_writeable_eq!(
/// names
/// .with_pattern_unchecked(&pattern)
/// .format(&zone_london_winter),
/// "Your time zone is: Greenwich Mean Time",
/// );
/// assert_try_writeable_eq!(
/// names
/// .with_pattern_unchecked(&pattern)
/// .format(&zone_london_summer),
/// "Your time zone is: British Summer Time",
/// );
/// ```
#[cfg(feature = "compiled_data")]
pub fn include_time_zone_specific_long_names(&mut self) -> Result<&mut Self, PatternLoadError>
where
crate::provider::Baked: icu_provider::DataProvider<tz::MzSpecificLongV1Marker>,
{
self.load_time_zone_specific_long_names(&crate::provider::Baked)
}
/// Loads specific non-location short time zone names.
pub fn load_time_zone_specific_short_names<P>(
&mut self,
provider: &P,
) -> Result<&mut Self, PatternLoadError>
where
P: DataProvider<tz::MzSpecificShortV1Marker> + DataProvider<tz::MzPeriodV1Marker> + ?Sized,
{
self.inner.load_time_zone_specific_short_names(
&tz::MzSpecificShortV1Marker::bind(provider),
&tz::MzPeriodV1Marker::bind(provider),
self.prefs,
)?;
Ok(self)
}
/// Includes specific non-location short time zone names.
///
/// Important: When performing manual time zone data loading, in addition to the
/// specific time zone format data, also call either:
///
/// - [`TypedDateTimeNames::include_time_zone_essentials`]
/// - [`TypedDateTimeNames::load_time_zone_essentials`]
///
/// # Examples
///
/// ```
/// use icu::calendar::Gregorian;
/// use icu::datetime::fieldsets::enums::ZoneFieldSet;
/// use icu::datetime::pattern::DateTimePattern;
/// use icu::datetime::pattern::TypedDateTimeNames;
/// use icu::locale::locale;
/// use icu::timezone::IxdtfParser;
/// use writeable::assert_try_writeable_eq;
///
/// let mut zone_london_winter = IxdtfParser::new()
/// .try_from_str("2024-01-01T00:00:00+00:00[Europe/London]")
/// .unwrap()
/// .zone;
/// let mut zone_london_summer = IxdtfParser::new()
/// .try_from_str("2024-07-01T00:00:00+01:00[Europe/London]")
/// .unwrap()
/// .zone;
///
/// let mut names = TypedDateTimeNames::<Gregorian, ZoneFieldSet>::try_new(
/// locale!("en-GB").into(),
/// )
/// .unwrap();
///
/// names.include_time_zone_essentials().unwrap();
/// names.include_time_zone_specific_short_names().unwrap();
///
/// // Create a pattern with symbol `z`:
/// let pattern_str = "'Your time zone is:' z";
/// let pattern: DateTimePattern = pattern_str.parse().unwrap();
///
/// assert_try_writeable_eq!(
/// names
/// .with_pattern_unchecked(&pattern)
/// .format(&zone_london_winter),
/// "Your time zone is: GMT",
/// );
/// assert_try_writeable_eq!(
/// names
/// .with_pattern_unchecked(&pattern)
/// .format(&zone_london_summer),
/// "Your time zone is: BST",
/// );
/// ```
#[cfg(feature = "compiled_data")]
pub fn include_time_zone_specific_short_names(&mut self) -> Result<&mut Self, PatternLoadError>
where
crate::provider::Baked: icu_provider::DataProvider<tz::MzSpecificShortV1Marker>,
{
self.load_time_zone_specific_short_names(&crate::provider::Baked)
}
/// Loads a [`FixedDecimalFormatter`] from a data provider.
#[inline]
pub fn load_fixed_decimal_formatter<P>(&mut self, provider: &P) -> Result<&mut Self, DataError>
where
P: DataProvider<DecimalSymbolsV2Marker> + DataProvider<DecimalDigitsV1Marker> + ?Sized,
{
self.inner
.load_fixed_decimal_formatter(&ExternalLoaderUnstable(provider), self.prefs)?;
Ok(self)
}
/// Loads a [`FixedDecimalFormatter`] with compiled data.
///
/// # Examples
///
/// ```
/// use icu::calendar::Time;
/// use icu::datetime::fieldsets::enums::TimeFieldSet;
/// use icu::datetime::pattern::DateTimePattern;
/// use icu::datetime::pattern::TypedDateTimeNames;
/// use icu::locale::locale;
/// use writeable::assert_try_writeable_eq;
///
/// let mut names =
/// TypedDateTimeNames::<(), TimeFieldSet>::try_new(locale!("bn").into())
/// .unwrap();
/// names.include_fixed_decimal_formatter();
///
/// // Create a pattern for the time, which is all numbers
/// let pattern_str = "'The current 24-hour time is:' HH:mm";
/// let pattern: DateTimePattern = pattern_str.parse().unwrap();
///
/// let time = Time::try_new(6, 40, 33, 0).unwrap();
///
/// assert_try_writeable_eq!(
/// names.with_pattern_unchecked(&pattern).format(&time),
/// "The current 24-hour time is: ০৬:৪০",
/// );
/// ```
#[cfg(feature = "compiled_data")]
#[inline]
pub fn include_fixed_decimal_formatter(&mut self) -> Result<&mut Self, DataError> {
self.inner
.load_fixed_decimal_formatter(&ExternalLoaderCompiledData, self.prefs)?;
Ok(self)
}
/// Associates this [`TypedDateTimeNames`] with a pattern
/// without checking that all necessary data is loaded.
#[inline]
pub fn with_pattern_unchecked<'l>(
&'l self,
pattern: &'l DateTimePattern,
) -> DateTimePatternFormatter<'l, C, FSet> {
DateTimePatternFormatter::new(pattern.as_borrowed(), self.inner.as_borrowed())
}
/// Associates this [`TypedDateTimeNames`] with a datetime pattern
/// and loads all data required for that pattern.
///
/// Does not duplicate textual field symbols. See #4337
pub fn load_for_pattern<'l, P>(
&'l mut self,
provider: &P,
pattern: &'l DateTimePattern,
) -> Result<DateTimePatternFormatter<'l, C, FSet>, PatternLoadError>
where
P: DataProvider<C::YearNamesV1Marker>
+ DataProvider<C::MonthNamesV1Marker>
+ DataProvider<WeekdayNamesV1Marker>
+ DataProvider<DayPeriodNamesV1Marker>
+ DataProvider<tz::EssentialsV1Marker>
+ DataProvider<tz::LocationsV1Marker>
+ DataProvider<tz::MzGenericLongV1Marker>
+ DataProvider<tz::MzGenericShortV1Marker>
+ DataProvider<tz::MzSpecificLongV1Marker>
+ DataProvider<tz::MzSpecificShortV1Marker>
+ DataProvider<tz::MzPeriodV1Marker>
+ DataProvider<DecimalSymbolsV2Marker>
+ DataProvider<DecimalDigitsV1Marker>
+ ?Sized,
{
let locale = self.prefs;
self.inner.load_for_pattern(
&C::YearNamesV1Marker::bind(provider),
&C::MonthNamesV1Marker::bind(provider),
&WeekdayNamesV1Marker::bind(provider),
&DayPeriodNamesV1Marker::bind(provider),
// TODO: Consider making time zone name loading optional here (lots of data)
&tz::EssentialsV1Marker::bind(provider),
&tz::LocationsV1Marker::bind(provider),
&tz::MzGenericLongV1Marker::bind(provider),
&tz::MzGenericShortV1Marker::bind(provider),
&tz::MzSpecificLongV1Marker::bind(provider),
&tz::MzSpecificShortV1Marker::bind(provider),
&tz::MzPeriodV1Marker::bind(provider),
&ExternalLoaderUnstable(provider),
locale,
pattern.iter_items(),
)?;
Ok(DateTimePatternFormatter::new(
pattern.as_borrowed(),
self.inner.as_borrowed(),
))
}
/// Associates this [`TypedDateTimeNames`] with a pattern
/// and includes all data required for that pattern.
///
/// Does not support duplicate textual field symbols. See #4337
///
/// # Examples
///
/// ```
/// use icu::calendar::DateTime;
/// use icu::calendar::Gregorian;
/// use icu::datetime::pattern::DateTimePattern;
/// use icu::datetime::pattern::TypedDateTimeNames;
/// use icu::locale::locale;
/// use writeable::assert_try_writeable_eq;
///
/// let mut names =
/// TypedDateTimeNames::<Gregorian>::try_new(locale!("en").into()).unwrap();
///
/// // Create a pattern from a pattern string:
/// let pattern_str = "MMM d (EEEE) 'of year' y G 'at' h:mm a";
/// let pattern: DateTimePattern = pattern_str.parse().unwrap();
///
/// // Load data for the pattern and format:
/// let datetime =
/// DateTime::try_new_gregorian(2023, 12, 5, 17, 43, 12).unwrap();
/// assert_try_writeable_eq!(
/// names
/// .include_for_pattern(&pattern)
/// .unwrap()
/// .format(&datetime),
/// "Dec 5 (Tuesday) of year 2023 AD at 5:43 PM"
/// );
/// ```
#[cfg(feature = "compiled_data")]
pub fn include_for_pattern<'l>(
&'l mut self,
pattern: &'l DateTimePattern,
) -> Result<DateTimePatternFormatter<'l, C, FSet>, PatternLoadError>
where
crate::provider::Baked: DataProvider<C::YearNamesV1Marker>
+ DataProvider<C::MonthNamesV1Marker>
+ DataProvider<WeekdayNamesV1Marker>
+ DataProvider<DayPeriodNamesV1Marker>
+ DataProvider<tz::EssentialsV1Marker>
+ DataProvider<tz::MzGenericShortV1Marker>,
{
let locale = self.prefs;
self.inner.load_for_pattern(
&C::YearNamesV1Marker::bind(&crate::provider::Baked),
&C::MonthNamesV1Marker::bind(&crate::provider::Baked),
&WeekdayNamesV1Marker::bind(&crate::provider::Baked),
&DayPeriodNamesV1Marker::bind(&crate::provider::Baked),
&tz::EssentialsV1Marker::bind(&crate::provider::Baked),
&tz::LocationsV1Marker::bind(&crate::provider::Baked),
&tz::MzGenericLongV1Marker::bind(&crate::provider::Baked),
&tz::MzGenericShortV1Marker::bind(&crate::provider::Baked),
&tz::MzSpecificLongV1Marker::bind(&crate::provider::Baked),
&tz::MzSpecificShortV1Marker::bind(&crate::provider::Baked),
&tz::MzPeriodV1Marker::bind(&crate::provider::Baked),
&ExternalLoaderCompiledData,
locale,
pattern.iter_items(),
)?;
Ok(DateTimePatternFormatter::new(
pattern.as_borrowed(),
self.inner.as_borrowed(),
))
}
/// Maps a [`TypedDateTimeNames`] of a specific `FSet` to a more general `FSet`.
///
/// For example, this can transform a formatter for [`DateFieldSet`] to one for
/// [`CompositeDateTimeFieldSet`].
///
/// [`DateFieldSet`]: crate::fieldsets::enums::DateFieldSet
/// [`CompositeDateTimeFieldSet`]: crate::fieldsets::enums::CompositeDateTimeFieldSet
///
/// # Examples
///
/// ```
/// use icu::calendar::Gregorian;
/// use icu::calendar::DateTime;
/// use icu::datetime::pattern::TypedDateTimeNames;
/// use icu::datetime::fields::FieldLength;
/// use icu::datetime::fields;
/// use icu::datetime::fieldsets::enums::{DateFieldSet, CompositeDateTimeFieldSet};
/// use icu::datetime::pattern::DateTimePattern;
/// use icu::locale::locale;
/// use writeable::assert_try_writeable_eq;
///
/// // Create an instance that can format abbreviated month names:
/// let mut names: TypedDateTimeNames<Gregorian, DateFieldSet> =
/// TypedDateTimeNames::try_new(locale!("uk").into()).unwrap();
/// names
/// .include_month_names(fields::Month::Format, FieldLength::Three)
/// .unwrap();
///
/// // Test it with a pattern:
/// let pattern_str = "MMM d y";
/// let pattern: DateTimePattern = pattern_str.parse().unwrap();
/// let datetime = DateTime::try_new_gregorian(2023, 11, 20, 12, 35, 3).unwrap();
/// assert_try_writeable_eq!(names.with_pattern_unchecked(&pattern).format(&datetime), "лист. 20 2023");
///
/// // Convert the field set to `CompositeDateTimeFieldSet`:
/// let composite_names = names.with_fset::<CompositeDateTimeFieldSet>();
///
/// // It should still work:
/// assert_try_writeable_eq!(composite_names.with_pattern_unchecked(&pattern).format(&datetime), "лист. 20 2023");
/// ```
///
/// Converting into a narrower type is not supported:
///
/// ```compile_fail,E0277
/// use icu::calendar::Gregorian;
/// use icu::datetime::pattern::TypedDateTimeNames;
/// use icu::datetime::fieldsets::enums::{DateFieldSet, CompositeDateTimeFieldSet};
///
/// let composite_names: TypedDateTimeNames<Gregorian, CompositeDateTimeFieldSet> = todo!();
///
/// // error[E0277]: the trait bound `(): From<DataPayloadWithVariables<DayPeriodNamesV1Marker, FieldLength>>` is not satisfied
/// let narrow_names = composite_names.with_fset::<DateFieldSet>();
/// ```
pub fn with_fset<FSet2: DateTimeNamesFrom<FSet>>(self) -> TypedDateTimeNames<C, FSet2> {
TypedDateTimeNames {
prefs: self.prefs,
inner: self.inner.with_fset(),
_calendar: PhantomData,
}
}
}
impl<FSet: DateTimeNamesMarker> RawDateTimeNames<FSet> {
pub(crate) fn new_without_number_formatting() -> Self {
Self {
year_names: <FSet::YearNames as NamesContainer<
YearNamesV1Marker,
FieldLength,
>>::Container::new_empty(),
month_names: <FSet::MonthNames as NamesContainer<
MonthNamesV1Marker,
(fields::Month, FieldLength),
>>::Container::new_empty(),
weekday_names: <FSet::WeekdayNames as NamesContainer<
WeekdayNamesV1Marker,
(fields::Weekday, FieldLength),
>>::Container::new_empty(),
dayperiod_names: <FSet::DayPeriodNames as NamesContainer<
DayPeriodNamesV1Marker,
FieldLength,
>>::Container::new_empty(),
zone_essentials: <FSet::ZoneEssentials as NamesContainer<
tz::EssentialsV1Marker,
(),
>>::Container::new_empty(),
locations_root: <FSet::ZoneLocations as NamesContainer<
tz::LocationsV1Marker,
(),
>>::Container::new_empty(),
locations: <FSet::ZoneLocations as NamesContainer<
tz::LocationsV1Marker,
(),
>>::Container::new_empty(),
mz_generic_long: <FSet::ZoneGenericLong as NamesContainer<
tz::MzGenericLongV1Marker,
(),
>>::Container::new_empty(),
mz_generic_short: <FSet::ZoneGenericShort as NamesContainer<
tz::MzGenericShortV1Marker,
(),
>>::Container::new_empty(),
mz_specific_long: <FSet::ZoneSpecificLong as NamesContainer<
tz::MzSpecificLongV1Marker,
(),
>>::Container::new_empty(),
mz_specific_short: <FSet::ZoneSpecificShort as NamesContainer<
tz::MzSpecificShortV1Marker,
(),
>>::Container::new_empty(),
mz_periods: <FSet::MetazoneLookup as NamesContainer<
tz::MzPeriodV1Marker,
(),
>>::Container::new_empty(),
fixed_decimal_formatter: None,
_marker: PhantomData,
}
}
pub(crate) fn as_borrowed(&self) -> RawDateTimeNamesBorrowed {
RawDateTimeNamesBorrowed {
year_names: self.year_names.get().inner,
month_names: self.month_names.get().inner,
weekday_names: self.weekday_names.get().inner,
dayperiod_names: self.dayperiod_names.get().inner,
zone_essentials: self.zone_essentials.get().inner,
locations_root: self.locations_root.get().inner,
locations: self.locations.get().inner,
mz_generic_long: self.mz_generic_long.get().inner,
mz_generic_short: self.mz_generic_short.get().inner,
mz_specific_long: self.mz_specific_long.get().inner,
mz_specific_short: self.mz_specific_short.get().inner,
mz_periods: self.mz_periods.get().inner,
fixed_decimal_formatter: self.fixed_decimal_formatter.as_ref(),
}
}
pub(crate) fn load_year_names<P>(
&mut self,
provider: &P,
prefs: DateTimeFormatterPreferences,
field_length: FieldLength,
) -> Result<(), PatternLoadError>
where
P: BoundDataProvider<YearNamesV1Marker> + ?Sized,
{
let locale = provider.bound_marker().make_locale(prefs.locale_prefs);
let field = fields::Field {
symbol: FieldSymbol::Era,
length: field_length,
};
// UTS 35 says that "G..GGG" are all Abbreviated
let field_length = field_length.numeric_to_abbr();
let variables = field_length;
let req = DataRequest {
id: DataIdentifierBorrowed::for_marker_attributes_and_locale(
marker_attrs::name_attr_for(
marker_attrs::Context::Format,
match field_length {
FieldLength::Three => marker_attrs::Length::Abbr,
FieldLength::Five => marker_attrs::Length::Narrow,
FieldLength::Four => marker_attrs::Length::Wide,
_ => return Err(PatternLoadError::UnsupportedLength(field)),
},
),
&locale,
),
..Default::default()
};
self.year_names
.load_put(provider, req, variables)
.map_err(|e| MaybePayloadError::into_load_error(e, field))?
.map_err(|e| PatternLoadError::Data(e, field))?;
Ok(())
}
pub(crate) fn load_month_names<P>(
&mut self,
provider: &P,
prefs: DateTimeFormatterPreferences,
field_symbol: fields::Month,
field_length: FieldLength,
) -> Result<(), PatternLoadError>
where
P: BoundDataProvider<MonthNamesV1Marker> + ?Sized,
{
let locale = provider.bound_marker().make_locale(prefs.locale_prefs);
let field = fields::Field {
symbol: FieldSymbol::Month(field_symbol),
length: field_length,
};
let variables = (field_symbol, field_length);
let req = DataRequest {
id: DataIdentifierBorrowed::for_marker_attributes_and_locale(
marker_attrs::name_attr_for(
match field_symbol {
fields::Month::Format => marker_attrs::Context::Format,
fields::Month::StandAlone => marker_attrs::Context::Standalone,
},
match field_length {
FieldLength::Three => marker_attrs::Length::Abbr,
FieldLength::Five => marker_attrs::Length::Narrow,
FieldLength::Four => marker_attrs::Length::Wide,
_ => return Err(PatternLoadError::UnsupportedLength(field)),
},
),
&locale,
),
..Default::default()
};
self.month_names
.load_put(provider, req, variables)
.map_err(|e| MaybePayloadError::into_load_error(e, field))?
.map_err(|e| PatternLoadError::Data(e, field))?;
Ok(())
}
pub(crate) fn load_day_period_names<P>(
&mut self,
provider: &P,
prefs: DateTimeFormatterPreferences,
field_length: FieldLength,
) -> Result<(), PatternLoadError>
where
P: BoundDataProvider<DayPeriodNamesV1Marker> + ?Sized,
{
let locale = provider.bound_marker().make_locale(prefs.locale_prefs);
let field = fields::Field {
// Names for 'a' and 'b' are stored in the same data marker
symbol: FieldSymbol::DayPeriod(fields::DayPeriod::NoonMidnight),
length: field_length,
};
// UTS 35 says that "a..aaa" are all Abbreviated
let field_length = field_length.numeric_to_abbr();
let variables = field_length;
let req = DataRequest {
id: DataIdentifierBorrowed::for_marker_attributes_and_locale(
marker_attrs::name_attr_for(
marker_attrs::Context::Format,
match field_length {
FieldLength::Three => marker_attrs::Length::Abbr,
FieldLength::Five => marker_attrs::Length::Narrow,
FieldLength::Four => marker_attrs::Length::Wide,
_ => return Err(PatternLoadError::UnsupportedLength(field)),
},
),
&locale,
),
..Default::default()
};
self.dayperiod_names
.load_put(provider, req, variables)
.map_err(|e| MaybePayloadError::into_load_error(e, field))?
.map_err(|e| PatternLoadError::Data(e, field))?;
Ok(())
}
pub(crate) fn load_weekday_names<P>(
&mut self,
provider: &P,
prefs: DateTimeFormatterPreferences,
field_symbol: fields::Weekday,
field_length: FieldLength,
) -> Result<(), PatternLoadError>
where
P: BoundDataProvider<WeekdayNamesV1Marker> + ?Sized,
{
let locale = provider.bound_marker().make_locale(prefs.locale_prefs);
let field = fields::Field {
symbol: FieldSymbol::Weekday(field_symbol),
length: field_length,
};
// UTS 35 says that "E..EEE" are all Abbreviated
// However, this doesn't apply to "e" and "c".
let field_length = if matches!(field_symbol, fields::Weekday::Format) {
field_length.numeric_to_abbr()
} else {
field_length
};
let variables = (field_symbol, field_length);
let req = DataRequest {
id: DataIdentifierBorrowed::for_marker_attributes_and_locale(
marker_attrs::name_attr_for(
match field_symbol {
// UTS 35 says that "e" and "E" have the same non-numeric names
fields::Weekday::Format | fields::Weekday::Local => {
marker_attrs::Context::Format
}
fields::Weekday::StandAlone => marker_attrs::Context::Standalone,
},
match field_length {
FieldLength::Three => marker_attrs::Length::Abbr,
FieldLength::Five => marker_attrs::Length::Narrow,
FieldLength::Four => marker_attrs::Length::Wide,
FieldLength::Six => marker_attrs::Length::Short,
_ => return Err(PatternLoadError::UnsupportedLength(field)),
},
),
&locale,
),
..Default::default()
};
self.weekday_names
.load_put(provider, req, variables)
.map_err(|e| MaybePayloadError::into_load_error(e, field))?
.map_err(|e| PatternLoadError::Data(e, field))?;
Ok(())
}
pub(crate) fn load_time_zone_essentials<P>(
&mut self,
provider: &P,
prefs: DateTimeFormatterPreferences,
) -> Result<(), PatternLoadError>
where
P: BoundDataProvider<tz::EssentialsV1Marker> + ?Sized,
{
let locale = provider.bound_marker().make_locale(prefs.locale_prefs);
let field = fields::Field {
symbol: FieldSymbol::TimeZone(fields::TimeZone::LocalizedOffset),
length: FieldLength::Four,
};
let variables = ();
let req = DataRequest {
id: DataIdentifierBorrowed::for_locale(&locale),
..Default::default()
};
self.zone_essentials
.load_put(provider, req, variables)
.map_err(|e| MaybePayloadError::into_load_error(e, field))?
.map_err(|e| PatternLoadError::Data(e, field))?;
Ok(())
}
pub(crate) fn load_time_zone_location_names<P>(
&mut self,
provider: &P,
prefs: DateTimeFormatterPreferences,
) -> Result<(), PatternLoadError>
where
P: BoundDataProvider<tz::LocationsV1Marker> + ?Sized,
{
let locale = provider.bound_marker().make_locale(prefs.locale_prefs);
let field = fields::Field {
symbol: FieldSymbol::TimeZone(fields::TimeZone::Location),
length: FieldLength::Four,
};
let variables = ();
let req = DataRequest {
id: DataIdentifierBorrowed::for_locale(&locale),
..Default::default()
};
self.locations_root
.load_put(provider, Default::default(), variables)
.map_err(|e| MaybePayloadError::into_load_error(e, field))?
.map_err(|e| PatternLoadError::Data(e, field))?;
self.locations
.load_put(provider, req, variables)
.map_err(|e| MaybePayloadError::into_load_error(e, field))?
.map_err(|e| PatternLoadError::Data(e, field))?;
Ok(())
}
fn load_mz_periods<P>(
&mut self,
provider: &P,
field: fields::Field,
) -> Result<(), PatternLoadError>
where
P: BoundDataProvider<tz::MzPeriodV1Marker> + ?Sized,
{
let variables = ();
self.mz_periods
.load_put(provider, Default::default(), variables)
.map_err(|e| MaybePayloadError::into_load_error(e, field))?
.map_err(|e| PatternLoadError::Data(e, field))?;
Ok(())
}
pub(crate) fn load_time_zone_generic_long_names(
&mut self,
provider: &(impl BoundDataProvider<tz::MzGenericLongV1Marker> + ?Sized),
mz_period_provider: &(impl BoundDataProvider<tz::MzPeriodV1Marker> + ?Sized),
prefs: DateTimeFormatterPreferences,
) -> Result<(), PatternLoadError> {
let locale = provider.bound_marker().make_locale(prefs.locale_prefs);
let field = fields::Field {
symbol: FieldSymbol::TimeZone(fields::TimeZone::GenericNonLocation),
length: FieldLength::Four,
};
let variables = ();
let req = DataRequest {
id: DataIdentifierBorrowed::for_locale(&locale),
..Default::default()
};
self.mz_generic_long
.load_put(provider, req, variables)
.map_err(|e| MaybePayloadError::into_load_error(e, field))?
.map_err(|e| PatternLoadError::Data(e, field))?;
self.load_mz_periods(mz_period_provider, field)?;
Ok(())
}
pub(crate) fn load_time_zone_generic_short_names(
&mut self,
provider: &(impl BoundDataProvider<tz::MzGenericShortV1Marker> + ?Sized),
mz_period_provider: &(impl BoundDataProvider<tz::MzPeriodV1Marker> + ?Sized),
prefs: DateTimeFormatterPreferences,
) -> Result<(), PatternLoadError> {
let locale = provider.bound_marker().make_locale(prefs.locale_prefs);
let field = fields::Field {
symbol: FieldSymbol::TimeZone(fields::TimeZone::GenericNonLocation),
length: FieldLength::One,
};
let variables = ();
let req = DataRequest {
id: DataIdentifierBorrowed::for_locale(&locale),
..Default::default()
};
self.mz_generic_short
.load_put(provider, req, variables)
.map_err(|e| MaybePayloadError::into_load_error(e, field))?
.map_err(|e| PatternLoadError::Data(e, field))?;
self.load_mz_periods(mz_period_provider, field)?;
Ok(())
}
pub(crate) fn load_time_zone_specific_long_names(
&mut self,
provider: &(impl BoundDataProvider<tz::MzSpecificLongV1Marker> + ?Sized),
mz_period_provider: &(impl BoundDataProvider<tz::MzPeriodV1Marker> + ?Sized),
prefs: DateTimeFormatterPreferences,
) -> Result<(), PatternLoadError> {
let locale = provider.bound_marker().make_locale(prefs.locale_prefs);
let field = fields::Field {
symbol: FieldSymbol::TimeZone(fields::TimeZone::SpecificNonLocation),
length: FieldLength::Four,
};
let variables = ();
let req = DataRequest {
id: DataIdentifierBorrowed::for_locale(&locale),
..Default::default()
};
self.mz_specific_long
.load_put(provider, req, variables)
.map_err(|e| MaybePayloadError::into_load_error(e, field))?
.map_err(|e| PatternLoadError::Data(e, field))?;
self.load_mz_periods(mz_period_provider, field)?;
Ok(())
}
pub(crate) fn load_time_zone_specific_short_names(
&mut self,
provider: &(impl BoundDataProvider<tz::MzSpecificShortV1Marker> + ?Sized),
mz_period_provider: &(impl BoundDataProvider<tz::MzPeriodV1Marker> + ?Sized),
prefs: DateTimeFormatterPreferences,
) -> Result<(), PatternLoadError> {
let locale = provider.bound_marker().make_locale(prefs.locale_prefs);
let field = fields::Field {
symbol: FieldSymbol::TimeZone(fields::TimeZone::SpecificNonLocation),
length: FieldLength::One,
};
let variables = ();
let req = DataRequest {
id: DataIdentifierBorrowed::for_locale(&locale),
..Default::default()
};
self.mz_specific_short
.load_put(provider, req, variables)
.map_err(|e| MaybePayloadError::into_load_error(e, field))?
.map_err(|e| PatternLoadError::Data(e, field))?;
self.load_mz_periods(mz_period_provider, field)?;
Ok(())
}
pub(crate) fn load_fixed_decimal_formatter(
&mut self,
loader: &impl FixedDecimalFormatterLoader,
prefs: DateTimeFormatterPreferences,
) -> Result<(), DataError> {
if self.fixed_decimal_formatter.is_some() {
return Ok(());
}
let mut options = FixedDecimalFormatterOptions::default();
options.grouping_strategy = GroupingStrategy::Never;
self.fixed_decimal_formatter = Some(FixedDecimalFormatterLoader::load(
loader,
(&prefs).into(),
options,
)?);
Ok(())
}
/// Loads all data required for formatting the given [`PatternItem`]s.
///
/// This function has a lot of arguments because many of the arguments are generic,
/// and pulling them out to an options struct would be cumbersome.
#[allow(clippy::too_many_arguments)]
pub(crate) fn load_for_pattern(
&mut self,
year_provider: &(impl BoundDataProvider<YearNamesV1Marker> + ?Sized),
month_provider: &(impl BoundDataProvider<MonthNamesV1Marker> + ?Sized),
weekday_provider: &(impl BoundDataProvider<WeekdayNamesV1Marker> + ?Sized),
dayperiod_provider: &(impl BoundDataProvider<DayPeriodNamesV1Marker> + ?Sized),
zone_essentials_provider: &(impl BoundDataProvider<tz::EssentialsV1Marker> + ?Sized),
locations_provider: &(impl BoundDataProvider<tz::LocationsV1Marker> + ?Sized),
mz_generic_long_provider: &(impl BoundDataProvider<tz::MzGenericLongV1Marker> + ?Sized),
mz_generic_short_provider: &(impl BoundDataProvider<tz::MzGenericShortV1Marker> + ?Sized),
mz_specific_long_provider: &(impl BoundDataProvider<tz::MzSpecificLongV1Marker> + ?Sized),
mz_specific_short_provider: &(impl BoundDataProvider<tz::MzSpecificShortV1Marker> + ?Sized),
mz_period_provider: &(impl BoundDataProvider<tz::MzPeriodV1Marker> + ?Sized),
fixed_decimal_formatter_loader: &impl FixedDecimalFormatterLoader,
prefs: DateTimeFormatterPreferences,
pattern_items: impl Iterator<Item = PatternItem>,
) -> Result<(), PatternLoadError> {
let mut numeric_field = None;
for item in pattern_items {
let PatternItem::Field(field) = item else {
continue;
};
use fields::*;
use FieldLength::*;
use FieldSymbol as FS;
match (field.symbol, field.length) {
///// Textual symbols /////
// G..GGGGG
(FS::Era, One | Two | Three | Four | Five) => {
self.load_year_names(year_provider, prefs, field.length)?;
}
// U..UUUUU
(FS::Year(Year::Cyclic), One | Two | Three | Four | Five) => {
numeric_field = Some(field);
self.load_year_names(year_provider, prefs, field.length)?;
}
// MMM..MMMMM
(FS::Month(Month::Format), Three | Four | Five) => {
self.load_month_names(month_provider, prefs, Month::Format, field.length)?;
}
// LLL..LLLLL
(FS::Month(Month::StandAlone), Three | Four | Five) => {
self.load_month_names(month_provider, prefs, Month::StandAlone, field.length)?;
}
// E..EE
(FS::Weekday(Weekday::Format), One | Two) => {
self.load_weekday_names(
weekday_provider,
prefs,
Weekday::Format,
field.length,
)?;
}
// EEE..EEEEEE, eee..eeeeee, ccc..cccccc
(FS::Weekday(symbol), Three | Four | Five | Six) => {
self.load_weekday_names(weekday_provider, prefs, symbol, field.length)?;
}
// a..aaaaa, b..bbbbb
(FS::DayPeriod(_), One | Two | Three | Four | Five) => {
self.load_day_period_names(dayperiod_provider, prefs, field.length)?;
}
///// Time zone symbols /////
// z..zzz
(FS::TimeZone(TimeZone::SpecificNonLocation), One | Two | Three) => {
numeric_field = Some(field);
self.load_time_zone_essentials(zone_essentials_provider, prefs)?;
self.load_time_zone_specific_short_names(
mz_specific_short_provider,
mz_period_provider,
prefs,
)?;
}
// zzzz
(FS::TimeZone(TimeZone::SpecificNonLocation), Four) => {
numeric_field = Some(field);
self.load_time_zone_essentials(zone_essentials_provider, prefs)?;
self.load_time_zone_specific_long_names(
mz_specific_long_provider,
mz_period_provider,
prefs,
)?;
self.load_time_zone_location_names(locations_provider, prefs)?;
}
// v
(FS::TimeZone(TimeZone::GenericNonLocation), One) => {
numeric_field = Some(field);
self.load_time_zone_essentials(zone_essentials_provider, prefs)?;
self.load_time_zone_generic_short_names(
mz_generic_short_provider,
mz_period_provider,
prefs,
)?;
// For fallback:
self.load_time_zone_location_names(locations_provider, prefs)?;
}
// vvvv
(FS::TimeZone(TimeZone::GenericNonLocation), Four) => {
numeric_field = Some(field);
self.load_time_zone_essentials(zone_essentials_provider, prefs)?;
self.load_time_zone_generic_long_names(
mz_generic_long_provider,
mz_period_provider,
prefs,
)?;
// For fallback:
self.load_time_zone_location_names(locations_provider, prefs)?;
}
// V
(FS::TimeZone(TimeZone::Location), One) => {
// no data required
}
// VVVV
(FS::TimeZone(TimeZone::Location), Four) => {
numeric_field = Some(field);
self.load_time_zone_essentials(zone_essentials_provider, prefs)?;
self.load_time_zone_location_names(locations_provider, prefs)?;
}
// O, OOOO
(FS::TimeZone(TimeZone::LocalizedOffset), One | Four) => {
self.load_time_zone_essentials(zone_essentials_provider, prefs)?;
numeric_field = Some(field);
}
// X..XXXXX, x..xxxxx
(
FS::TimeZone(TimeZone::IsoWithZ | TimeZone::Iso),
One | Two | Three | Four | Five,
) => {
// no data required
}
///// Numeric symbols /////
// y+
(FS::Year(Year::Calendar), _) => numeric_field = Some(field),
// r+
(FS::Year(Year::RelatedIso), _) => {
// always formats as ASCII
}
// M..MM, L..LL
(FS::Month(_), One | Two) => numeric_field = Some(field),
// e..ee, c..cc
(FS::Weekday(Weekday::Local | Weekday::StandAlone), One | Two) => {
// TODO(#5643): Requires locale-aware day-of-week calculation
return Err(PatternLoadError::UnsupportedLength(field));
}
// d..dd
(FS::Day(Day::DayOfMonth), One | Two) => numeric_field = Some(field),
// D..DDD
(FS::Day(Day::DayOfYear), One | Two | Three) => numeric_field = Some(field),
// F
(FS::Day(Day::DayOfWeekInMonth), One) => numeric_field = Some(field),
// K..KK, h..hh, H..HH, k..kk
(FS::Hour(_), One | Two) => numeric_field = Some(field),
// m..mm
(FS::Minute, One | Two) => numeric_field = Some(field),
// s..ss
(FS::Second(Second::Second), One | Two) => numeric_field = Some(field),
// A+
(FS::Second(Second::MillisInDay), _) => numeric_field = Some(field),
// s.S+, ss.S+ (s is modelled by length, S+ by symbol)
(FS::DecimalSecond(_), One | Two) => numeric_field = Some(field),
///// Unsupported symbols /////
_ => {
return Err(PatternLoadError::UnsupportedLength(field));
}
}
}
if let Some(field) = numeric_field {
self.load_fixed_decimal_formatter(fixed_decimal_formatter_loader, prefs)
.map_err(|e| PatternLoadError::Data(e, field))?;
}
Ok(())
}
}
impl<'data> RawDateTimeNamesBorrowed<'data> {
pub(crate) fn get_name_for_month(
&self,
field_symbol: fields::Month,
field_length: FieldLength,
code: MonthCode,
) -> Result<MonthPlaceholderValue, GetNameForMonthError> {
let month_names = self
.month_names
.get_with_variables((field_symbol, field_length))
.ok_or(GetNameForMonthError::NotLoaded)?;
let Some((month_number, is_leap)) = code.parsed() else {
return Err(GetNameForMonthError::Invalid);
};
let Some(month_index) = month_number.checked_sub(1) else {
return Err(GetNameForMonthError::Invalid);
};
let month_index = usize::from(month_index);
let name = match month_names {
MonthNamesV1::Linear(linear) => {
if is_leap {
None
} else {
linear.get(month_index)
}
}
MonthNamesV1::LeapLinear(leap_linear) => {
let num_months = leap_linear.len() / 2;
if is_leap {
leap_linear.get(month_index + num_months)
} else if month_index < num_months {
leap_linear.get(month_index)
} else {
None
}
}
MonthNamesV1::LeapNumeric(leap_numeric) => {
if is_leap {
return Ok(MonthPlaceholderValue::NumericPattern(leap_numeric));
} else {
return Ok(MonthPlaceholderValue::Numeric);
}
}
};
// Note: Always return `false` for the second argument since neo MonthNames
// knows how to handle leap months and we don't need the fallback logic
name.map(MonthPlaceholderValue::PlainString)
.ok_or(GetNameForMonthError::Invalid)
}
pub(crate) fn get_name_for_weekday(
&self,
field_symbol: fields::Weekday,
field_length: FieldLength,
day: input::IsoWeekday,
) -> Result<&str, GetNameForWeekdayError> {
// UTS 35 says that "e" and "E" have the same non-numeric names
let field_symbol = field_symbol.to_format_symbol();
// UTS 35 says that "E..EEE" are all Abbreviated
// However, this doesn't apply to "e" and "c".
let field_length = if matches!(field_symbol, fields::Weekday::Format) {
field_length.numeric_to_abbr()
} else {
field_length
};
let weekday_names = self
.weekday_names
.get_with_variables((field_symbol, field_length))
.ok_or(GetNameForWeekdayError::NotLoaded)?;
weekday_names
.names
.get((day as usize) % 7)
// TODO: make weekday_names length 7 in the type system
.ok_or(GetNameForWeekdayError::NotLoaded)
}
/// Gets the era symbol, or `None` if data is loaded but symbol isn't found.
///
/// `None` should fall back to the era code directly, if, for example,
/// a japanext datetime is formatted with a `DateTimeFormat<Japanese>`
pub(crate) fn get_name_for_era(
&self,
field_length: FieldLength,
era: FormattingEra,
) -> Result<&str, GetSymbolForEraError> {
// UTS 35 says that "G..GGG" are all Abbreviated
let field_length = field_length.numeric_to_abbr();
let year_names = self
.year_names
.get_with_variables(field_length)
.ok_or(GetSymbolForEraError::NotLoaded)?;
match (year_names, era) {
(YearNamesV1::VariableEras(era_names), FormattingEra::Code(era_code)) => era_names
.get(era_code.0.as_str().into())
.ok_or(GetSymbolForEraError::Invalid),
(YearNamesV1::FixedEras(era_names), FormattingEra::Index(index, _fallback)) => {
era_names
.get(index.into())
.ok_or(GetSymbolForEraError::Invalid)
}
_ => Err(GetSymbolForEraError::Invalid),
}
}
pub(crate) fn get_name_for_cyclic(
&self,
field_length: FieldLength,
cyclic: NonZeroU8,
) -> Result<&str, GetSymbolForCyclicYearError> {
// UTS 35 says that "U..UUU" are all Abbreviated
let field_length = field_length.numeric_to_abbr();
let year_names = self
.year_names
.get_with_variables(field_length)
.ok_or(GetSymbolForCyclicYearError::NotLoaded)?;
let YearNamesV1::Cyclic(cyclics) = year_names else {
return Err(GetSymbolForCyclicYearError::Invalid { max: 0 });
};
cyclics
.get((cyclic.get() as usize) - 1)
.ok_or(GetSymbolForCyclicYearError::Invalid {
max: cyclics.len() + 1,
})
}
pub(crate) fn get_name_for_day_period(
&self,
field_symbol: fields::DayPeriod,
field_length: FieldLength,
hour: input::IsoHour,
is_top_of_hour: bool,
) -> Result<&str, GetNameForDayPeriodError> {
use fields::DayPeriod::NoonMidnight;
// UTS 35 says that "a..aaa" are all Abbreviated
let field_length = field_length.numeric_to_abbr();
let dayperiod_names = self
.dayperiod_names
.get_with_variables(field_length)
.ok_or(GetNameForDayPeriodError::NotLoaded)?;
let option_value: Option<&str> = match (field_symbol, u8::from(hour), is_top_of_hour) {
(NoonMidnight, 00, true) => dayperiod_names.midnight().or_else(|| dayperiod_names.am()),
(NoonMidnight, 12, true) => dayperiod_names.noon().or_else(|| dayperiod_names.pm()),
(_, hour, _) if hour < 12 => dayperiod_names.am(),
_ => dayperiod_names.pm(),
};
option_value.ok_or(GetNameForDayPeriodError::NotLoaded)
}
}
/// A container contains all data payloads for time zone formatting (borrowed version).
#[derive(Debug, Copy, Clone, Default)]
pub(crate) struct TimeZoneDataPayloadsBorrowed<'a> {
/// The data that contains meta information about how to display content.
pub(crate) essentials: Option<&'a tz::EssentialsV1<'a>>,
/// The root location names, e.g. Toronto
pub(crate) locations_root: Option<&'a tz::LocationsV1<'a>>,
/// The language specific location names, e.g. Italy
pub(crate) locations: Option<&'a tz::LocationsV1<'a>>,
/// The generic long metazone names, e.g. Pacific Time
pub(crate) mz_generic_long: Option<&'a tz::MzGenericV1<'a>>,
/// The generic short metazone names, e.g. PT
pub(crate) mz_generic_short: Option<&'a tz::MzGenericV1<'a>>,
/// The specific long metazone names, e.g. Pacific Daylight Time
pub(crate) mz_specific_long: Option<&'a tz::MzSpecificV1<'a>>,
/// The specific short metazone names, e.g. Pacific Daylight Time
pub(crate) mz_specific_short: Option<&'a tz::MzSpecificV1<'a>>,
/// The metazone lookup
pub(crate) mz_periods: Option<&'a tz::MzPeriodV1<'a>>,
}
impl<'data> RawDateTimeNamesBorrowed<'data> {
pub(crate) fn get_payloads(&self) -> TimeZoneDataPayloadsBorrowed<'data> {
TimeZoneDataPayloadsBorrowed {
essentials: self.zone_essentials.get_option(),
locations_root: self.locations_root.get_option(),
locations: self.locations.get_option(),
mz_generic_long: self.mz_generic_long.get_option(),
mz_generic_short: self.mz_generic_short.get_option(),
mz_specific_long: self.mz_specific_long.get_option(),
mz_specific_short: self.mz_specific_short.get_option(),
mz_periods: self.mz_periods.get_option(),
}
}
}