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Store the current snapshot on Error construction #148

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79 changes: 76 additions & 3 deletions spec.html
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Expand Up @@ -305,6 +305,82 @@ <h1>Runtime Semantics: Evaluation</h1>
</emu-clause>
</emu-clause>

<emu-clause id="sec-fundamental-objects">
<h1>Fundamental Objects</h1>

<emu-clause id="sec-error-objects">
<h1>Error Objects</h1>

<emu-clause id="sec-error-constructor">
<h1>The Error Constructor</h1>

<emu-clause id="sec-error-message">
<h1>Error ( _message_ [ , _options_ ] )</h1>
<p>This function performs the following steps when called:</p>
<emu-alg>
1. If NewTarget is *undefined*, let _newTarget_ be the active function object; else let _newTarget_ be NewTarget.
1. Let _O_ be ? OrdinaryCreateFromConstructor(_newTarget_, *"%Error.prototype%"*, « [[ErrorData]] »).
1. If _message_ is not *undefined*, then
1. Let _msg_ be ? ToString(_message_).
1. Perform CreateNonEnumerableDataPropertyOrThrow(_O_, *"message"*, _msg_).
1. Perform ? InstallErrorCause(_O_, _options_).
1. <ins>Perform CreateNonEnumerableDataPropertyOrThrow(_O_, *"snapshot"*, ? CreateAsyncContextSnapshotObject(AsyncContextSnapshot())).</ins>
1. Return _O_.
</emu-alg>
</emu-clause>
</emu-clause>

<emu-clause id="sec-nativeerror-object-structure">
<h1>_NativeError_ Object Structure</h1>

<emu-clause id="sec-nativeerror-constructors">
<h1>The _NativeError_ Constructors</h1>

<emu-clause id="sec-nativeerror">
<h1>_NativeError_ ( _message_ [ , _options_ ] )</h1>
<p>Each _NativeError_ function performs the following steps when called:</p>
<emu-alg>
1. If NewTarget is *undefined*, let _newTarget_ be the active function object; else let _newTarget_ be NewTarget.
1. [id="step-nativeerror-ordinarycreatefromconstructor"] Let _O_ be ? OrdinaryCreateFromConstructor(_newTarget_, <code>"%<var>NativeError</var>.prototype%"</code>, « [[ErrorData]] »).
1. If _message_ is not *undefined*, then
1. Let _msg_ be ? ToString(_message_).
1. Perform CreateNonEnumerableDataPropertyOrThrow(_O_, *"message"*, _msg_).
1. Perform ? InstallErrorCause(_O_, _options_).
1. <ins>Perform CreateNonEnumerableDataPropertyOrThrow(_O_, *"snapshot"*, ? CreateAsyncContextSnapshotObject(AsyncContextSnapshot())).</ins>
1. Return _O_.
</emu-alg>
<p>The actual value of the string passed in step <emu-xref href="#step-nativeerror-ordinarycreatefromconstructor"></emu-xref> is either *"%EvalError.prototype%"*, *"%RangeError.prototype%"*, *"%ReferenceError.prototype%"*, *"%SyntaxError.prototype%"*, *"%TypeError.prototype%"*, or *"%URIError.prototype%"* corresponding to which _NativeError_ constructor is being defined.</p>
</emu-clause>
</emu-clause>
</emu-clause>

<emu-clause id="sec-aggregate-error-objects">
<h1>AggregateError Objects</h1>

<emu-clause id="sec-aggregate-error-constructor">
<h1>The AggregateError Constructor</h1>

<emu-clause id="sec-aggregate-error">
<h1>AggregateError ( _errors_, _message_ [ , _options_ ] )</h1>
<p>This function performs the following steps when called:</p>
<emu-alg>
1. If NewTarget is *undefined*, let _newTarget_ be the active function object; else let _newTarget_ be NewTarget.
1. Let _O_ be ? OrdinaryCreateFromConstructor(_newTarget_, *"%AggregateError.prototype%"*, « [[ErrorData]] »).
1. If _message_ is not *undefined*, then
1. Let _msg_ be ? ToString(_message_).
1. Perform CreateNonEnumerableDataPropertyOrThrow(_O_, *"message"*, _msg_).
1. Perform ? InstallErrorCause(_O_, _options_).
1. Let _errorsList_ be ? IteratorToList(? GetIterator(_errors_, ~sync~)).
1. Perform ! DefinePropertyOrThrow(_O_, *"errors"*, PropertyDescriptor { [[Configurable]]: *true*, [[Enumerable]]: *false*, [[Writable]]: *true*, [[Value]]: CreateArrayFromList(_errorsList_) }).
1. <ins>Perform CreateNonEnumerableDataPropertyOrThrow(_O_, *"snapshot"*, ? CreateAsyncContextSnapshotObject(AsyncContextSnapshot())).</ins>
1. Return _O_.
</emu-alg>
</emu-clause>
</emu-clause>
</emu-clause>
</emu-clause>
</emu-clause>

<emu-clause id="sec-control-abstraction-objects">
<h1>Control Abstraction Objects</h1>

Expand Down Expand Up @@ -816,9 +892,6 @@ <h1>
1. Set _asyncSnapshot_.[[AsyncSnapshotMapping]] to _snapshotMapping_.
1. Return _asyncSnapshot_.
</emu-alg>
<emu-note>
<p>This abstract operation is meant for hosts to use, and it is not used in this specification.</p>
</emu-note>
</emu-clause>
</emu-clause>

Expand Down