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<base href="https://bugs.webkit.org/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Conversion to sequence<T> is broken for iterable objects"
href="https://bugs.webkit.org/show_bug.cgi?id=160801">160801</a>
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<th>Summary</th>
<td>Conversion to sequence<T> is broken for iterable objects
</td>
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<th>Classification</th>
<td>Unclassified
</td>
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<th>Product</th>
<td>WebKit
</td>
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<th>Version</th>
<td>WebKit Nightly Build
</td>
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<th>Hardware</th>
<td>Unspecified
</td>
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<th>OS</th>
<td>Unspecified
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>Normal
</td>
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<th>Priority</th>
<td>P2
</td>
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<th>Component</th>
<td>Bindings
</td>
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<th>Assignee</th>
<td>webkit-unassigned@lists.webkit.org
</td>
</tr>
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<th>Reporter</th>
<td>rniwa@webkit.org
</td>
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<th>CC</th>
<td>cdumez@apple.com
</td>
</tr></table>
<p>
<div>
<pre>We need to implement <a href="http://heycam.github.io/webidl/#es-sequence">http://heycam.github.io/webidl/#es-sequence</a>
An ECMAScript value V is converted to an IDL sequence<T> value as follows:
1. If V is not an object, throw a TypeError.
2. If V is a native RegEx object, throw a TypeError.
3. Let method be the result of GetMethod(V, @@iterator).
4. ReturnIfAbrupt(method).
5. If method is undefined, throw a TypeError.
7. Return the result of creating a sequence of type sequence<T> from V and method.
Creating a sequence from an iterable: <a href="http://heycam.github.io/webidl/#create-sequence-from-iterable">http://heycam.github.io/webidl/#create-sequence-from-iterable</a>
1. Let tier be GetIterator(iterable, method).
2. ReturnIfAbrupt(iter).
3. Initialize i to be 0.
4. Repeat
1. Let next be IteratorStep(tier).
2. ReturnIfAbrupt(next).
3. If next is false, then return an IDL sequence value of type sequence<T> of length i, where the value of the element at index j is Sj.
4. Let nextItem be IteratorValue(next).
5. ReturnIfAbrupt(nextItem).
6. Initialize Si to the result of converting nextItem to an IDL value of type T.
7. Set i to i + 1.</pre>
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