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Editorial: separate TextDecoderStream constructor to two algos #364

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Merged
annevk merged 5 commits into from
May 21, 2026
+31 −12
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Editorial: separate TextDecoderStream constructor to two algos #364

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Editorial: separate TextDecoderStream constructor to two algos
noamr May 19, 2026
4f45254
Update encoding.bs
noamr May 19, 2026
91132bd
buncha nits
noamr May 20, 2026
49ecab8
Update encoding.bs
noamr May 20, 2026
833be29
nitty
noamr May 20, 2026
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43 changes: 31 additions & 12 deletions encoding.bs
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Original file line number Diff line number Diff line change
Expand Up @@ -1851,23 +1851,41 @@ constructor steps are:

<li><p>If <var>encoding</var> is failure or <a>replacement</a>, then <a>throw</a> a {{RangeError}}.

<li><p>Set <a>this</a>'s <a for=TextDecoderCommon>encoding</a> to <var>encoding</var>.
<li><p>Let <var>errorMode</var> be "<code>fatal</code>" if
<var>options</var>["{{TextDecoderOptions/fatal}}"] is true; otherwise "<code>replacement</code>".

<li><p>If <var>options</var>["{{TextDecoderOptions/fatal}}"] is true, then set <a>this</a>'s
<a for=TextDecoderCommon>error mode</a> to "<code>fatal</code>".
<li><p><a>Set up a text decoder stream</a> with <a>this</a>, <var>encoding</var>,
<var>errorMode</var>, and <var>options</var>["{{TextDecoderOptions/ignoreBOM}}"].
</ol>
</div>

<li><p>Set <a>this</a>'s <a for=TextDecoderCommon>ignore BOM</a> to
<var>options</var>["{{TextDecoderOptions/ignoreBOM}}"].
<div algorithm>
<p>To <dfn export>set up a text decoder stream</dfn> given a {{TextDecoderStream}} object
<var>stream</var>, an optional [=/encoding=] <var>encoding</var> (default <a>UTF-8</a>), an optional
<a for=/>error mode</a> <var>errorMode</var> (default "<code>replacement</code>"), and an optional
boolean <var>ignoreBOM</var> (default false), run these steps:

<li><p>Set <a>this</a>'s <a for=TextDecoderCommon>decoder</a> to a new instance of <a>this</a>'s
<a for=TextDecoderCommon>encoding</a>'s <a for=/>decoder</a>, and set <a>this</a>'s
<a for=TextDecoderCommon>I/O queue</a> to a new <a for=/>I/O queue</a>.
<ol>
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@annevk annevk May 20, 2026

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Newline above this ol.

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@noamr noamr May 20, 2026

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Fixed

<li><p><a>Assert</a>: <var>encoding</var> is not <a>replacement</a>.

<li><p>Set <var>stream</var>'s <a for=TextDecoderCommon>encoding</a> to <var>encoding</var>.

<li><p>Set <var>stream</var>'s <a for=TextDecoderCommon>error mode</a> to <var>errorMode</var>.

<li><p>Set <var>stream</var>'s <a for=TextDecoderCommon>ignore BOM</a> to <var>ignoreBOM</var>.

<li><p>Set <var>stream</var>'s <a for=TextDecoderCommon>decoder</a> to a new instance of
<var>encoding</var>'s <a for=/>decoder</a>.

<li><p>Set <var>stream</var>'s <a for=TextDecoderCommon>I/O queue</a> to a new <a for=/>I/O
queue</a>.

<li><p>Let <var>transformAlgorithm</var> be an algorithm which takes a <var>chunk</var> argument
and runs the <a>decode and enqueue a chunk</a> algorithm with <a>this</a> and <var>chunk</var>.
and runs the <a>decode and enqueue a chunk</a> algorithm with <var>stream</var> and
<var>chunk</var>.

<li><p>Let <var>flushAlgorithm</var> be an algorithm which takes no arguments and runs the
<a>flush and enqueue</a> algorithm with <a>this</a>.
<li><p>Let <var>flushAlgorithm</var> be an algorithm which takes no arguments and runs the <a>flush
and enqueue</a> algorithm with <var>stream</var>.

<li><p>Let <var>transformStream</var> be a [=new=] {{TransformStream}}.

Expand All @@ -1877,7 +1895,8 @@ constructor steps are:
<a for="TransformStream/set up"><var ignore>flushAlgorithm</var></a> set to
<var>flushAlgorithm</var>.

<li><p>Set <a>this</a>'s <a for=GenericTransformStream>transform</a> to <var>transformStream</var>.
<li><p>Set <var>stream</var>'s <a for=GenericTransformStream>transform</a> to
<var>transformStream</var>.
</ol>
</div>

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