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Add async iterable<T> type to WebIDL #1397

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Add async iterable<T> type to WebIDL #1397

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14f1bdb
Add `async iterable<T>` type to WebIDL
lucacasonato Mar 25, 2024
b7df167
Reason argument for close async iterable
lucacasonato Mar 26, 2024
0402e85
fix typo
lucacasonato Mar 26, 2024
b6f7392
clarify the details of allowed positions for async iterables
lucacasonato Mar 28, 2024
6363f6c
fix ci
lucacasonato May 7, 2024
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11 changes: 6 additions & 5 deletions index.bs
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Original file line number Diff line number Diff line change
Expand Up @@ -8162,17 +8162,17 @@ Note: Instead of returning an async iterable from an IDL operation, the operatio

<div algorithm>

To <dfn id="async-iterable-finish-iterating" export lt="finish iterating an async iterable">finish iterating</dfn> an
To <dfn id="async-iterable-close" export lt="close an async iterable">close</dfn> an
<code><a lt="async iterable type">async iterable&lt;<var ignore>T</var>&gt;</a></code> |iteratorRecord|,
perform the following steps:
with a reason |reason|, perform the following steps:

1. Let |iterator| be |iteratorRecord|.\[[Iterator]].
1. Let |returnMethod| be <a abstract-op>GetMethod</a>(|iterator|, "return").
1. If |returnMethod| is an abrupt completion, return [=a promise rejected with=]
|returnMethod|.\[[Value]].
1. If |returnMethod| is <emu-val>undefined</emu-val>, return [=a promise resolved with=]
<emu-val>undefined</emu-val>.
1. Let |returnResult| be <a abstract-op>Call</a>(|returnMethod|.\[[Value]], |iterator|).
1. Let |returnResult| be <a abstract-op>Call</a>(|returnMethod|.\[[Value]], |iterator|, « |reason| »).
1. If |returnResult| is an abrupt completion, return [=a promise rejected with=]
|returnResult|.\[[Value]].
1. Let |returnPromise| be [=a promise resolved with=] |returnResult|.\[[Value]].
Expand All @@ -8188,7 +8188,7 @@ Note: Instead of returning an async iterable from an IDL operation, the operatio

<code>concatN</code> is an [=operation=] that returns a promise that will be fulfilled with the
concatenation of all the strings yielded by the async iterable passed to it. It stops
concatenating and finishes the iterator once the async iterable has yielded N strings.
concatenating and closes the iterator once the async iterable has yielded N strings.

<pre>
interface I {
Expand All @@ -8211,7 +8211,8 @@ Note: Instead of returning an async iterable from an IDL operation, the operatio
1. Set |result| to the result of concatenating |result| and |v|.
1. Set |n| to |n| + 1.
1. If |n| is |maxN|, then:
1. Let |finish| be the result of <a lt="finish iterating an async iterable">finishing iterating</a> |iterable|.
1. Let |finish| be the result of <a lt="close an async iterable">closing</a>
|iterable| with reason <emu-val>undefined</emu-val>.
1. [=React=] to |finish|:
- If |finish| was fulfilled, [=resolve=] |promise| with |result|.
- If |finish| was rejected with reason |r|, [=reject=] |promise| with |r|.
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