7921d8ba91
This patch adds the Duration object itself, its constructor and prototype (currently empty), and three required abstract operations.
107 lines
4.9 KiB
C++
107 lines
4.9 KiB
C++
/*
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* Copyright (c) 2021, Linus Groh <linusg@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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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/Temporal/Duration.h>
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#include <LibJS/Runtime/Temporal/DurationConstructor.h>
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namespace JS::Temporal {
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// 7 Temporal.Duration Objects, https://tc39.es/proposal-temporal/#sec-temporal-duration-objects
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Duration::Duration(double years, double months, double weeks, double days, double hours, double minutes, double seconds, double milliseconds, double microseconds, double nanoseconds, Object& prototype)
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: Object(prototype)
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, m_years(years)
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, m_months(months)
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, m_weeks(weeks)
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, m_days(days)
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, m_hours(hours)
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, m_minutes(minutes)
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, m_seconds(seconds)
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, m_milliseconds(milliseconds)
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, m_microseconds(microseconds)
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, m_nanoseconds(nanoseconds)
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{
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}
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// 7.5.3 DurationSign ( years, months, weeks, days, hours, minutes, seconds, milliseconds, microseconds, nanoseconds )
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i8 duration_sign(double years, double months, double weeks, double days, double hours, double minutes, double seconds, double milliseconds, double microseconds, double nanoseconds)
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{
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// 1. For each value v of « years, months, weeks, days, hours, minutes, seconds, milliseconds, microseconds, nanoseconds », do
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for (auto& v : { years, months, weeks, days, hours, minutes, seconds, milliseconds, microseconds, nanoseconds }) {
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// a. If v < 0, return −1.
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if (v < 0)
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return -1;
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// b. If v > 0, return 1.
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if (v > 0)
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return 1;
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}
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// 2. Return 0.
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return 0;
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}
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// 7.5.4 IsValidDuration ( years, months, weeks, days, hours, minutes, seconds, milliseconds, microseconds, nanoseconds )
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bool is_valid_duration(double years, double months, double weeks, double days, double hours, double minutes, double seconds, double milliseconds, double microseconds, double nanoseconds)
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{
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// 1. Let sign be ! DurationSign(years, months, weeks, days, hours, minutes, seconds, milliseconds, microseconds, nanoseconds).
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auto sign = duration_sign(years, months, weeks, days, hours, minutes, seconds, milliseconds, microseconds, nanoseconds);
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// 2. For each value v of « years, months, weeks, days, hours, minutes, seconds, milliseconds, microseconds, nanoseconds », do
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for (auto& v : { years, months, weeks, days, hours, minutes, seconds, milliseconds, microseconds, nanoseconds }) {
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// a. If v is not finite, return false.
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if (!isfinite(v))
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return false;
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// b. If v < 0 and sign > 0, return false.
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if (v < 0 && sign > 0)
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return false;
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// c. If v > 0 and sign < 0, return false.
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if (v > 0 && sign < 0)
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return false;
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}
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// 3. Return true.
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return true;
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}
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// 7.5.7 CreateTemporalDuration ( years, months, weeks, days, hours, minutes, seconds, milliseconds, microseconds, nanoseconds [ , newTarget ] ), https://tc39.es/proposal-temporal/#sec-temporal-createtemporalduration
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Duration* create_temporal_duration(GlobalObject& global_object, double years, double months, double weeks, double days, double hours, double minutes, double seconds, double milliseconds, double microseconds, double nanoseconds, FunctionObject* new_target)
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{
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auto& vm = global_object.vm();
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// 1. If ! IsValidDuration(years, months, weeks, days, hours, minutes, seconds, milliseconds, microseconds, nanoseconds) is false, throw a RangeError exception.
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if (!is_valid_duration(years, months, weeks, days, hours, minutes, seconds, milliseconds, microseconds, nanoseconds)) {
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vm.throw_exception<RangeError>(global_object, ErrorType::TemporalInvalidDuration);
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return {};
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}
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// 2. If newTarget is not present, set it to %Temporal.Duration%.
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if (!new_target)
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new_target = global_object.temporal_duration_constructor();
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// 3. Let object be ? OrdinaryCreateFromConstructor(newTarget, "%Temporal.Duration.prototype%", « [[InitializedTemporalDuration]], [[Years]], [[Months]], [[Weeks]], [[Days]], [[Hours]], [[Minutes]], [[Seconds]], [[Milliseconds]], [[Microseconds]], [[Nanoseconds]] »).
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// 4. Set object.[[Years]] to years.
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// 5. Set object.[[Months]] to months.
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// 6. Set object.[[Weeks]] to weeks.
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// 7. Set object.[[Days]] to days.
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// 8. Set object.[[Hours]] to hours.
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// 9. Set object.[[Minutes]] to minutes.
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// 10. Set object.[[Seconds]] to seconds.
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// 11. Set object.[[Milliseconds]] to milliseconds.
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// 12. Set object.[[Microseconds]] to microseconds.
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// 13. Set object.[[Nanoseconds]] to nanoseconds.
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auto* object = ordinary_create_from_constructor<Duration>(global_object, *new_target, &GlobalObject::temporal_duration_prototype, years, months, weeks, days, hours, minutes, seconds, milliseconds, microseconds, nanoseconds);
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if (vm.exception())
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return {};
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// 14. Return object.
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return object;
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}
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}
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