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LibJS: Implement Temporal.PlainDateTime.from()
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9 changed files with 507 additions and 2 deletions
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@ -8,6 +8,7 @@
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#include <LibJS/Runtime/AbstractOperations.h>
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#include <LibJS/Runtime/GlobalObject.h>
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#include <LibJS/Runtime/Object.h>
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#include <LibJS/Runtime/Temporal/AbstractOperations.h>
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#include <LibJS/Runtime/Temporal/Calendar.h>
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#include <LibJS/Runtime/Temporal/PlainTime.h>
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#include <LibJS/Runtime/Temporal/PlainTimeConstructor.h>
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@ -33,8 +34,41 @@ void PlainTime::visit_edges(Visitor& visitor)
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visitor.visit(&m_calendar);
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}
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// 4.5.4 RegulateTime ( hour, minute, second, millisecond, microsecond, nanosecond, overflow ), https://tc39.es/proposal-temporal/#sec-temporal-regulatetime
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Optional<TemporalTime> regulate_time(GlobalObject& global_object, double hour, double minute, double second, double millisecond, double microsecond, double nanosecond, StringView overflow)
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{
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auto& vm = global_object.vm();
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// 1. Assert: hour, minute, second, millisecond, microsecond and nanosecond are integers.
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// NOTE: As the spec is currently written this assertion can fail, these are either integers _or_ infinity.
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// See https://github.com/tc39/proposal-temporal/issues/1672.
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// 2. Assert: overflow is either "constrain" or "reject".
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// NOTE: Asserted by the VERIFY_NOT_REACHED at the end
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// 3. If overflow is "constrain", then
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if (overflow == "constrain"sv) {
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// a. Return ! ConstrainTime(hour, minute, second, millisecond, microsecond, nanosecond).
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return constrain_time(hour, minute, second, millisecond, microsecond, nanosecond);
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}
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// 4. If overflow is "reject", then
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if (overflow == "reject"sv) {
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// a. If ! IsValidTime(hour, minute, second, millisecond, microsecond, nanosecond) is false, throw a RangeError exception.
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if (!is_valid_time(hour, minute, second, millisecond, microsecond, nanosecond)) {
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vm.throw_exception<RangeError>(global_object, ErrorType::TemporalInvalidPlainTime);
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return {};
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}
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// b. Return the Record { [[Hour]]: hour, [[Minute]]: minute, [[Second]]: second, [[Millisecond]]: millisecond, [[Microsecond]]: microsecond, [[Nanosecond]]: nanosecond }.
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return TemporalTime { .hour = hour, .minute = minute, .second = second, .millisecond = millisecond, .microsecond = microsecond, .nanosecond = nanosecond };
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}
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VERIFY_NOT_REACHED();
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}
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// 4.5.5 IsValidTime ( hour, minute, second, millisecond, microsecond, nanosecond ), https://tc39.es/proposal-temporal/#sec-temporal-isvalidtime
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bool is_valid_time(u8 hour, u8 minute, u8 second, u16 millisecond, u16 microsecond, u16 nanosecond)
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bool is_valid_time(double hour, double minute, double second, double millisecond, double microsecond, double nanosecond)
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{
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// 1. Assert: hour, minute, second, millisecond, microsecond, and nanosecond are integers.
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@ -131,6 +165,33 @@ DaysAndTime balance_time(i64 hour, i64 minute, i64 second, i64 millisecond, i64
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};
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}
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// 4.5.7 ConstrainTime ( hour, minute, second, millisecond, microsecond, nanosecond ), https://tc39.es/proposal-temporal/#sec-temporal-constraintime
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TemporalTime constrain_time(double hour, double minute, double second, double millisecond, double microsecond, double nanosecond)
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{
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// 1. Assert: hour, minute, second, millisecond, microsecond, and nanosecond are integers.
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// 2. Set hour to ! ConstrainToRange(hour, 0, 23).
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hour = constrain_to_range(hour, 0, 23);
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// 3. Set minute to ! ConstrainToRange(minute, 0, 59).
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minute = constrain_to_range(minute, 0, 59);
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// 4. Set second to ! ConstrainToRange(second, 0, 59).
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second = constrain_to_range(second, 0, 59);
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// 5. Set millisecond to ! ConstrainToRange(millisecond, 0, 999).
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millisecond = constrain_to_range(millisecond, 0, 999);
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// 6. Set microsecond to ! ConstrainToRange(microsecond, 0, 999).
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microsecond = constrain_to_range(microsecond, 0, 999);
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// 7. Set nanosecond to ! ConstrainToRange(nanosecond, 0, 999).
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nanosecond = constrain_to_range(nanosecond, 0, 999);
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// 8. Return the Record { [[Hour]]: hour, [[Minute]]: minute, [[Second]]: second, [[Millisecond]]: millisecond, [[Microsecond]]: microsecond, [[Nanosecond]]: nanosecond }.
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return TemporalTime { .hour = hour, .minute = minute, .second = second, .millisecond = millisecond, .microsecond = microsecond, .nanosecond = nanosecond };
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}
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// 4.5.8 CreateTemporalTime ( hour, minute, second, millisecond, microsecond, nanosecond [ , newTarget ] ), https://tc39.es/proposal-temporal/#sec-temporal-createtemporaltime
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PlainTime* create_temporal_time(GlobalObject& global_object, u8 hour, u8 minute, u8 second, u16 millisecond, u16 microsecond, u16 nanosecond, FunctionObject* new_target)
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{
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@ -164,4 +225,43 @@ PlainTime* create_temporal_time(GlobalObject& global_object, u8 hour, u8 minute,
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return object;
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}
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// 4.5.9 ToTemporalTimeRecord ( temporalTimeLike ), https://tc39.es/proposal-temporal/#sec-temporal-totemporaltimerecord
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Optional<TemporalTime> to_temporal_time_record(GlobalObject& global_object, Object& temporal_time_like)
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{
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auto& vm = global_object.vm();
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// 1. Assert: Type(temporalTimeLike) is Object.
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// 2. Let result be the Record { [[Hour]]: undefined, [[Minute]]: undefined, [[Second]]: undefined, [[Millisecond]]: undefined, [[Microsecond]]: undefined, [[Nanosecond]]: undefined }.
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auto result = TemporalTime {};
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// 3. For each row of Table 3, except the header row, in table order, do
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for (auto& [internal_slot, property] : temporal_time_like_properties<TemporalTime, double>(vm)) {
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// a. Let property be the Property value of the current row.
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// b. Let value be ? Get(temporalTimeLike, property).
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auto value = temporal_time_like.get(property);
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if (vm.exception())
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return {};
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// c. If value is undefined, then
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if (value.is_undefined()) {
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// i. Throw a TypeError exception.
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vm.throw_exception<TypeError>(global_object, ErrorType::TemporalMissingRequiredProperty, property);
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return {};
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}
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// d. Set value to ? ToIntegerOrInfinity(value).
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auto value_number = value.to_integer_or_infinity(global_object);
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if (vm.exception())
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return {};
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// e. Set result's internal slot whose name is the Internal Slot value of the current row to value.
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result.*internal_slot = value_number;
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}
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// 4. Return result.
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return result;
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}
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}
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