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Normative: Make Intl.PluralRules ResolvePlural and associated AOs take Intl mathematical values rather than Numbers #1026

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Merged
ben-allen merged 1 commit into from
Dec 5, 2025
Merged

Normative: Make Intl.PluralRules ResolvePlural and associated AOs take Intl mathematical values rather than Numbers #1026

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26 changes: 16 additions & 10 deletions spec/pluralrules.html
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Original file line number Diff line number Diff line change
Expand Up @@ -211,7 +211,7 @@ <h1>Intl.PluralRules.prototype.select ( _value_ )</h1>
<emu-alg>
1. Let _pr_ be the *this* value.
1. Perform ? RequireInternalSlot(_pr_, [[InitializedPluralRules]]).
1. Let _n_ be ? ToNumber(_value_).
1. Let _n_ be ? ToIntlMathematicalValue(_value_).
1. Return ResolvePlural(_pr_, _n_).[[PluralCategory]].
</emu-alg>
</emu-clause>
Expand All @@ -225,8 +225,8 @@ <h1>Intl.PluralRules.prototype.selectRange ( _start_, _end_ )</h1>
1. Let _pr_ be the *this* value.
1. Perform ? RequireInternalSlot(_pr_, [[InitializedPluralRules]]).
1. If _start_ is *undefined* or _end_ is *undefined*, throw a *TypeError* exception.
1. Let _x_ be ? ToNumber(_start_).
1. Let _y_ be ? ToNumber(_end_).
1. Let _x_ be ? ToIntlMathematicalValue(_start_).
1. Let _y_ be ? ToIntlMathematicalValue(_end_).
1. Return ? ResolvePluralRange(_pr_, _x_, _y_).
</emu-alg>
</emu-clause>
Expand Down Expand Up @@ -285,18 +285,24 @@ <h1>
<h1>
ResolvePlural (
_pluralRules_: an Intl.PluralRules,
_n_: a Number,
_n_: an Intl mathematical value,
): a Record with fields [[PluralCategory]] (*"zero"*, *"one"*, *"two"*, *"few"*, *"many"*, or *"other"*) and [[FormattedString]] (a String)
</h1>
<dl class="header">
<dt>description</dt>
<dd>The returned Record contains two string-valued fields describing _n_ according to the effective locale and the options of _pluralRules_: [[PluralCategory]] characterizing its <emu-xref href="#sec-pluralruleselect">plural category</emu-xref>, and [[FormattedString]] containing its formatted representation.</dd>
</dl>
<emu-alg>
1. If _n_ is not a finite Number, then
1. Let _s_ be ! ToString(_n_).
1. If _n_ is ~not-a-number~, then
1. Let _s_ be an ILD String value indicating the *NaN* value.
1. Return the Record { [[PluralCategory]]: *"other"*, [[FormattedString]]: _s_ }.
1. Let _res_ be FormatNumericToString(_pluralRules_, ℝ(_n_)).
1. If _n_ is ~positive-infinity~, then
1. Let _s_ be an ILD String value indicating positive infinity.
1. Return the Record { [[PluralCategory]]: *"other"*, [[FormattedString]]: _s_ }.
1. If _n_ is ~negative-infinity~, then
1. Let _s_ be an ILD String value indicating negative infinity.
1. Return the Record { [[PluralCategory]]: *"other"*, [[FormattedString]]: _s_ }.
1. Let _res_ be FormatNumericToString(_pluralRules_, _n_).
1. Let _s_ be _res_.[[FormattedString]].
1. Let _locale_ be _pluralRules_.[[Locale]].
1. Let _type_ be _pluralRules_.[[Type]].
Expand Down Expand Up @@ -326,16 +332,16 @@ <h1>
<h1>
ResolvePluralRange (
_pluralRules_: an Intl.PluralRules,
_x_: a Number,
_y_: a Number,
_x_: an Intl mathematical value,
_y_: an Intl mathematical value,
): either a normal completion containing either *"zero"*, *"one"*, *"two"*, *"few"*, *"many"*, or *"other"*, or a throw completion
</h1>
<dl class="header">
<dt>description</dt>
<dd>The returned String value represents the plural form of the range starting from _x_ and ending at _y_ according to the effective locale and the options of _pluralRules_.</dd>
</dl>
<emu-alg>
1. If _x_ is *NaN* or _y_ is *NaN*, throw a *RangeError* exception.
1. If _x_ is ~not-a-number~ or _y_ is ~not-a-number~, throw a *RangeError* exception.
1. Let _xp_ be ResolvePlural(_pluralRules_, _x_).
1. Let _yp_ be ResolvePlural(_pluralRules_, _y_).
1. If _xp_.[[FormattedString]] is _yp_.[[FormattedString]], then
Expand Down