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feat: Temporal 三族新增 round 方法

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彭俊皓
2026-10-14 10:14:58 +00:00
parent 8a4959f8b1
commit 96e24c84c1
12 changed files with 673 additions and 218 deletions
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crates/oxide_builtins/src/temporal/plain_time.rs
+3 -43
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@@ -9,7 +9,8 @@ use super::{
difference_core, duration_component_integer, duration_like_values, ensure_plain_time, get_double_prop,
initialize_temporal_receiver, instant_rounding_mode, instant_string_without_annotations, is_ctor_call,
make_plain_time, parse_any_offset_seconds, parse_difference_settings, parse_fractional_second_digits,
parse_iso_date, receiver_obj, reject_partial_object_with_calendar_or_time_zone, round_instant_ns,
parse_iso_date, parse_round_options, receiver_obj, reject_partial_object_with_calendar_or_time_zone,
round_instant_ns,
temporal_number_component, temporal_option_number, temporal_option_string, temporal_option_value,
temporal_overflow, valid_offset_fraction, zoned_date_time_plain_parts, FractionalSecondDigitsInput, IsoDateTime,
};
@@ -815,60 +816,19 @@ pub(crate) fn plain_time_round_unit(value: &str) -> Option<(i128, i128)> {
/// - 舍入跨午夜（如 23:59:59.9 舍入到秒）→ 取模回 00:00，符合 rounding-cross-midnight 语义。
pub fn plain_time_round<H: VmHost>(vm: &mut H, args: &[u8]) -> NativeResult {
let round_to = if args.len() > 1 { vm.reg(args[1]) } else { JsValue::undefined() };
let (increment_value, mode_value, unit_value) = if round_to.is_string() {
(1.0, "halfExpand".to_string(), Some(to_string(round_to)))
} else {
if !round_to.is_object() {
return NativeResult::Err(crate::error::create_type_error(vm, "roundTo must be a string or object"));
}
let options_ptr = round_to.as_js_object_ptr();
if options_ptr.is_null() {
return NativeResult::Err(crate::error::create_type_error(vm, "roundTo must be a string or object"));
}
let options = unsafe { &*options_ptr };
let increment_raw = native_try!(temporal_option_value(vm, options, round_to, "roundingIncrement"));
let increment = if increment_raw.is_undefined() {
1.0
} else {
native_try!(temporal_option_number(vm, increment_raw))
};
let mode_raw = native_try!(temporal_option_value(vm, options, round_to, "roundingMode"));
let mode = if mode_raw.is_undefined() {
"halfExpand".to_string()
} else {
native_try!(temporal_option_string(vm, mode_raw))
};
let unit_raw = native_try!(temporal_option_value(vm, options, round_to, "smallestUnit"));
let unit = if unit_raw.is_undefined() {
None
} else {
Some(native_try!(temporal_option_string(vm, unit_raw)))
};
(increment, mode, unit)
};
let (increment, mode, unit_value) = native_try!(parse_round_options(vm, round_to));
let ptr = native_try!(receiver_obj(vm, args));
let obj = unsafe { &*ptr };
native_try!(ensure_plain_time(vm, obj));
let time_ns = get_double_prop(obj, 0) as i128;
let Some(mode) = instant_rounding_mode(&mode_value) else {
return NativeResult::Err(crate::error::create_range_error(vm, "invalid rounding mode"));
};
let Some(unit_value) = unit_value else {
return NativeResult::Err(crate::error::create_range_error(vm, "smallestUnit is required"));
};
let Some((unit_ns, max_increment)) = plain_time_round_unit(&unit_value) else {
return NativeResult::Err(crate::error::create_range_error(vm, "invalid smallest unit"));
};
if !increment_value.is_finite() {
return NativeResult::Err(crate::error::create_range_error(vm, "invalid rounding increment"));
}
let increment = increment_value.trunc();
if !(1.0..=1_000_000_000.0).contains(&increment) {
return NativeResult::Err(crate::error::create_range_error(vm, "invalid rounding increment"));
}
let increment = increment as i128;
// 真因子校验：增量须严格小于最大增量且能整除（MaximumTemporalDurationRoundingIncrement
// 语义；instant_round 只查 % 的缺陷不在此沿用）。
if increment >= max_increment || max_increment % increment != 0 {