Editorial: Inline ZeroTimeDuration

It now just returns 0. No need to have an operation for that.

See: #2953

spec/duration.html

@@ -1475,17 +1475,6 @@ <h1>
  </emu-alg>
  </emu-clause>
 
- <emu-clause id="sec-zerotimeduration" type="abstract operation">
- <h1>ZeroTimeDuration ( ): a time duration</h1>
- <dl class="header">
- <dt>description</dt>
- <dd>It returns a time duration of zero length.</dd>
- </dl>
- <emu-alg>
- 1. Return 0.
- </emu-alg>
- </emu-clause>
-
  <emu-clause id="sec-temporal-datedurationdays" type="abstract operation">
  <h1>
  DateDurationDays (
@@ -1528,7 +1517,7 @@ <h1>
  1. Let _fractionalDays_ be _duration_.[[Date]].[[Days]] + DivideTimeDuration(_duration_.[[Time]], nsPerDay).
  1. Let _days_ be RoundNumberToIncrement(_fractionalDays_, _increment_, _roundingMode_).
  1. Let _dateDuration_ be ? AdjustDateDurationRecord(_duration_.[[Date]], _days_).
- 1. Return ! CombineDateAndTimeDuration(_dateDuration_, ZeroTimeDuration()).
+ 1. Return ! CombineDateAndTimeDuration(_dateDuration_, 0).
  1. Assert: TemporalUnitCategory(_unit_) is ~time~.
  1. Let _divisor_ be the value in the "Length in Nanoseconds" column of the row of <emu-xref href="#table-temporal-units"></emu-xref> whose "Value" column contains _unit_.
  1. Let _rounded_ be ? RoundTimeDurationToIncrement(_duration_.[[Time]], _divisor_ × _increment_, _roundingMode_).
@@ -1675,7 +1664,7 @@ <h1>
  1. Let _didExpandCalendarUnit_ be *false*.
  1. Let _resultDuration_ be _startDuration_.
  1. Let _nudgedEpochNs_ be _startEpochNs_.
- 1. Set _resultDuration_ to ! CombineDateAndTimeDuration(_resultDuration_, ZeroTimeDuration()).
+ 1. Set _resultDuration_ to ! CombineDateAndTimeDuration(_resultDuration_, 0).
  1. Let _nudgeResult_ be Duration Nudge Result Record { [[Duration]]: _resultDuration_, [[NudgedEpochNs]]: _nudgedEpochNs_, [[DidExpandCalendarUnit]]: _didExpandCalendarUnit_ }.
  1. Return the Record { [[NudgeResult]]: _nudgeResult_, [[Total]]: _total_ }.
  </emu-alg>
@@ -1813,7 +1802,7 @@ <h1>
  1. Let _beyondEnd_ be _nudgedEpochNs_ - _endEpochNs_.
  1. If _beyondEnd_ &lt; 0, let _beyondEndSign_ be -1; else if _beyondEnd_ > 0, let _beyondEndSign_ be 1; else let _beyondEndSign_ be 0.
  1. If _beyondEndSign_ ≠ -_sign_, then
- 1. Set _duration_ to ! CombineDateAndTimeDuration(_endDuration_, ZeroTimeDuration()).
+ 1. Set _duration_ to ! CombineDateAndTimeDuration(_endDuration_, 0).
  1. Else,
  1. Set _done_ to *true*.
  1. Set _unitIndex_ to _unitIndex_ - 1.

spec/plaindate.html

@@ -898,7 +898,7 @@ <h1>
  1. If CompareISODate(_temporalDate_.[[ISODate]], _other_.[[ISODate]]) = 0, then
  1. Return ! CreateTemporalDuration(0, 0, 0, 0, 0, 0, 0, 0, 0, 0).
  1. Let _dateDifference_ be CalendarDateUntil(_temporalDate_.[[Calendar]], _temporalDate_.[[ISODate]], _other_.[[ISODate]], _settings_.[[LargestUnit]]).
- 1. Let _duration_ be ! CombineDateAndTimeDuration(_dateDifference_, ZeroTimeDuration()).
+ 1. Let _duration_ be ! CombineDateAndTimeDuration(_dateDifference_, 0).
  1. If _settings_.[[SmallestUnit]] is not ~day~ or _settings_.[[RoundingIncrement]] ≠ 1, then
  1. Let _isoDateTime_ be CombineISODateAndTimeRecord(_temporalDate_.[[ISODate]], MidnightTimeRecord()).
  1. Let _isoDateTimeOther_ be CombineISODateAndTimeRecord(_other_.[[ISODate]], MidnightTimeRecord()).

spec/plaindatetime.html

@@ -1000,7 +1000,7 @@ <h1>
  </dl>
  <emu-alg>
  1. If CompareISODateTime(_isoDateTime1_, _isoDateTime2_) = 0, then
- 1. Return ! CombineDateAndTimeDuration(ZeroDateDuration(), ZeroTimeDuration()).
+ 1. Return ! CombineDateAndTimeDuration(ZeroDateDuration(), 0).
  1. Let _diff_ be ? DifferenceISODateTime(_isoDateTime1_, _isoDateTime2_, _calendar_, _largestUnit_).
  1. If _smallestUnit_ is ~nanosecond~ and _roundingIncrement_ = 1, return _diff_.
  1. Let _destEpochNs_ be GetUTCEpochNanoseconds(_isoDateTime2_).

spec/plainyearmonth.html

@@ -610,7 +610,7 @@ <h1>
  1. Let _otherDate_ be ? CalendarDateFromFields(_calendar_, _otherFields_, ~constrain~).
  1. Let _dateDifference_ be CalendarDateUntil(_calendar_, _thisDate_, _otherDate_, _settings_.[[LargestUnit]]).
  1. Let _yearsMonthsDifference_ be ! AdjustDateDurationRecord(_dateDifference_, 0, 0).
- 1. Let _duration_ be ! CombineDateAndTimeDuration(_yearsMonthsDifference_, ZeroTimeDuration()).
+ 1. Let _duration_ be ! CombineDateAndTimeDuration(_yearsMonthsDifference_, 0).
  1. If _settings_.[[SmallestUnit]] is not ~month~ or _settings_.[[RoundingIncrement]] ≠ 1, then
  1. Let _isoDateTime_ be CombineISODateAndTimeRecord(_thisDate_, MidnightTimeRecord()).
  1. Let _isoDateTimeOther_ be CombineISODateAndTimeRecord(_otherDate_, MidnightTimeRecord()).

spec/zoneddatetime.html

@@ -1118,7 +1118,7 @@ <h1>
  </dd>
  </dl>
  <emu-alg>
- 1. If _ns1_ = _ns2_, return ! CombineDateAndTimeDuration(ZeroDateDuration(), ZeroTimeDuration()).
+ 1. If _ns1_ = _ns2_, return ! CombineDateAndTimeDuration(ZeroDateDuration(), 0).
  1. Let _startDateTime_ be GetISODateTimeFor(_timeZone_, _ns1_).
  1. Let _endDateTime_ be GetISODateTimeFor(_timeZone_, _ns2_).
  1. If _ns2_ - _ns1_ &lt; 0, let _sign_ be -1; else let _sign_ be 1.