Initial RawNeoDateTimeFormatter data model

components/datetime/src/raw/mod.rs

@@ -4,6 +4,8 @@
 
 /// Untyped versions of TypedDateTimeFormatter and TypedZonedDateTimeFormatter
 mod datetime;
+#[cfg(feature = "experimental")]
+mod neo;
 mod zoned_datetime;
 
 pub(crate) use datetime::{DateFormatter, DateTimeFormatter, TimeFormatter};

components/datetime/src/raw/neo.rs

@@ -0,0 +1,56 @@
+// 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 crate::calendar::CldrCalendar;
+use icu_provider::prelude::*;
+use crate::provider::neo::*;
+use crate::format::neo::*;
+
+pub(crate) enum DatePatternSelectionData {
+    SingleDate(DataPayload<ErasedDatePatternV1Marker>),
+    OptionalEra {
+        with_era: DataPayload<ErasedDatePatternV1Marker>,
+        without_era: DataPayload<ErasedDatePatternV1Marker>,
+    },
+}
+
+pub(crate) enum TimePatternData {
+    SingleTime(DataPayload<TimePatternV1Marker>),
+}
+
+pub(crate) enum DateTimePatternSelectionData {
+    Date(DatePatternSelectionData),
+    Time(TimePatternData),
+    Glue(DataPayload<DateTimePatternV1Marker>),
+}
+
+pub(crate) struct TypedNeoDateTimeFormatter<C: CldrCalendar> {
+    names: TypedDateTimeNames<C>,
+}
+
+pub(crate) struct RawNeoDateTimeFormatter {
+    names: RawDateTimeNames,
+    selection: DateTimePatternSelectionData,
+}
+
+#[cfg(test)]
+mod tests {
+    use icu_calendar::week::WeekCalculator;
+    use icu_decimal::FixedDecimalFormatter;
+
+    use super::*;
+
+    #[test]
+    fn test_sizes() {
+        assert_eq!(48, core::mem::size_of::<DataPayload<ErasedDatePatternV1Marker>>());
+        assert_eq!(80, core::mem::size_of::<DataLocale>());
+        assert_eq!(216, core::mem::size_of::<FixedDecimalFormatter>());
+        assert_eq!(2, core::mem::size_of::<WeekCalculator>());
+        assert_eq!(72, core::mem::size_of::<DataPayload<ErasedYearNamesV1Marker>>());
+        assert_eq!(56, core::mem::size_of::<DataPayload<ErasedMonthNamesV1Marker>>());
+        assert_eq!(40, core::mem::size_of::<DataPayload<WeekdayNamesV1Marker>>());
+        assert_eq!(40, core::mem::size_of::<DataPayload<DayPeriodNamesV1Marker>>());
+        assert_eq!(640, core::mem::size_of::<RawNeoDateTimeFormatter>());
+    }
+}