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Editorial: Inlined Intl.PluralRules's GetOperands AO. #930

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Oct 29, 2024
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Editorial: Inlined Intl.PluralRules's GetOperands AO. #930

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Editorial: Inlined Intl.PluralRules's GetOperands AO.
ben-allen Sep 27, 2024
c0a38b9
Update spec/pluralrules.html
ben-allen Oct 29, 2024
204f1ea
fixup! Update spec/pluralrules.html
ben-allen Oct 29, 2024
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102 changes: 6 additions & 96 deletions spec/pluralrules.html
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Original file line number Diff line number Diff line change
Expand Up @@ -281,106 +281,17 @@ <h1>Properties of Intl.PluralRules Instances</h1>
<emu-clause id="sec-intl-pluralrules-abstracts">
<h1>Abstract Operations for PluralRules Objects</h1>

<emu-clause id="sec-getoperands" type="abstract operation">
<h1>
GetOperands (
_s_: a decimal String,
): a Plural Rules Operands Record
</h1>
<dl class="header">
<dt>description</dt>
<dd>It extracts numeric features from _s_ that correspond with the operands of <a href="https://unicode.org/reports/tr35/tr35-numbers.html#Operands">Unicode Technical Standard #35 Part 3 Numbers, Section 5.1.1 Operands</a>.</dd>
</dl>
<emu-alg>
1. Let _n_ be ! ToNumber(_s_).
1. Assert: _n_ is finite.
1. Let _dp_ be StringIndexOf(_s_, *"."*, 0).
1. If _dp_ is ~not-found~, then
1. Let _intPart_ be _n_.
1. Let _fracSlice_ be *""*.
1. Else,
1. Let _intPart_ be the substring of _s_ from 0 to _dp_.
1. Let _fracSlice_ be the substring of _s_ from _dp_ + 1.
1. Let _i_ be abs(! ToNumber(_intPart_)).
1. Let _fracDigitCount_ be the length of _fracSlice_.
1. Let _f_ be ! ToNumber(_fracSlice_).
1. Let _significantFracSlice_ be the value of _fracSlice_ stripped of trailing *"0"*.
1. Let _significantFracDigitCount_ be the length of _significantFracSlice_.
1. Let _significantFrac_ be ! ToNumber(_significantFracSlice_).
1. Return a new Plural Rules Operands Record { [[Number]]: abs(_n_), [[IntegerDigits]]: _i_, [[FractionDigits]]: _f_, [[NumberOfFractionDigits]]: _fracDigitCount_, [[FractionDigitsWithoutTrailing]]: _significantFrac_, [[NumberOfFractionDigitsWithoutTrailing]]: _significantFracDigitCount_ }.
</emu-alg>
</emu-clause>

<emu-clause id="sec-plural-rules-operands-records">
<h1>Plural Rules Operands Records</h1>

<p>
Each <dfn id="plural-operands-record">Plural Rules Operands Record</dfn> has the fields defined in <emu-xref href="#table-plural-operands"></emu-xref>.
</p>

<emu-table id="table-plural-operands">
<emu-caption>Plural Rules Operands Record Fields</emu-caption>
<table class="real-table">
<thead>
<tr>
<th>Field Name</th>
<th>Value Type</th>
<th>UTS #35 Operand</th>
<th>Description</th>
</tr>
</thead>
<tr>
<td>[[Number]]</td>
<td>Number</td>
<td>n</td>
<td>Absolute value of the source number</td>
</tr>
<tr>
<td>[[IntegerDigits]]</td>
<td>Number</td>
<td>i</td>
<td>Integer part of [[Number]].</td>
</tr>
<tr>
<td>[[FractionDigits]]</td>
<td>Number</td>
<td>f</td>
<td>Visible fraction digits in [[Number]], <em>with</em> trailing zeroes, as an integer having [[NumberOfFractionDigits]] digits.</td>
</tr>
<tr>
<td>[[NumberOfFractionDigits]]</td>
<td>Number</td>
<td>v</td>
<td>Number of visible fraction digits in [[Number]], <em>with</em> trailing zeroes.</td>
</tr>
<tr>
<td>[[FractionDigitsWithoutTrailing]]</td>
<td>Number</td>
<td>t</td>
<td>Visible fraction digits in [[Number]], <em>without</em> trailing zeroes, as an integer having [[NumberOfFractionDigitsWithoutTrailing]] digits.</td>
</tr>
<tr>
<td>[[NumberOfFractionDigitsWithoutTrailing]]</td>
<td>Number</td>
<td>w</td>
<td>Number of visible fraction digits in [[Number]], <em>without</em> trailing zeroes.</td>
</tr>
</table>
</emu-table>
</emu-clause>

<emu-clause id="sec-pluralruleselect" type="implementation-defined abstract operation">
<h1>
PluralRuleSelect (
_locale_: a String,
_locale_: a language tag,
_type_: *"cardinal"* or *"ordinal"*,
_n_: a finite Number,
_operands_: a Plural Rules Operands Record derived from formatting _n_,
_s_: a decimal String,
): *"zero"*, *"one"*, *"two"*, *"few"*, *"many"*, or *"other"*
</h1>
<dl class="header">
<dt>description</dt>
<dd>The returned String best categorizes the _operands_ representation of _n_ according to the rules for _locale_ and _type_.</dd>
<dd>The returned String characterizes the plural category of _s_ according to the effective locale and the options of _pluralRules_.</dd>
</dl>
</emu-clause>

Expand All @@ -399,12 +310,11 @@ <h1>
1. If _n_ is not a finite Number, then
1. Let _s_ be ! ToString(_n_).
1. Return the Record { [[PluralCategory]]: *"other"*, [[FormattedString]]: _s_ }.
1. Let _locale_ be _pluralRules_.[[Locale]].
1. Let _type_ be _pluralRules_.[[Type]].
1. Let _res_ be FormatNumericToString(_pluralRules_, ℝ(_n_)).
1. Let _s_ be _res_.[[FormattedString]].
1. Let _operands_ be GetOperands(_s_).
1. Let _p_ be PluralRuleSelect(_locale_, _type_, _n_, _operands_).
1. Let _locale_ be _pluralRules_.[[Locale]].
1. Let _type_ be _pluralRules_.[[Type]].
1. Let _p_ be PluralRuleSelect(_locale_, _type_, _s_).
1. Return the Record { [[PluralCategory]]: _p_, [[FormattedString]]: _s_ }.
</emu-alg>
</emu-clause>
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