Skip to content

Normative: add #x in obj syntax #2290

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
ljharb merged 1 commit into from
Jul 14, 2021
Merged

Normative: add #x in obj syntax #2290

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
22 changes: 22 additions & 0 deletions spec.html
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -7708,6 +7708,7 @@ <h1>Static Semantics: IsFunctionDefinition</h1>
RelationalExpression `&gt;=` ShiftExpression
RelationalExpression `instanceof` ShiftExpression
RelationalExpression `in` ShiftExpression
PrivateIdentifier `in` ShiftExpression

EqualityExpression :
EqualityExpression `==` RelationalExpression
Expand Down Expand Up @@ -8456,6 +8457,7 @@ <h1>Static Semantics: AssignmentTargetType</h1>
RelationalExpression `&gt;=` ShiftExpression
RelationalExpression `instanceof` ShiftExpression
RelationalExpression `in` ShiftExpression
PrivateIdentifier `in` ShiftExpression

EqualityExpression :
EqualityExpression `==` RelationalExpression
Expand Down Expand Up @@ -17124,6 +17126,7 @@ <h2>Syntax</h2>
RelationalExpression[?In, ?Yield, ?Await] `&gt;=` ShiftExpression[?Yield, ?Await]
RelationalExpression[?In, ?Yield, ?Await] `instanceof` ShiftExpression[?Yield, ?Await]
[+In] RelationalExpression[+In, ?Yield, ?Await] `in` ShiftExpression[?Yield, ?Await]
[+In] PrivateIdentifier `in` ShiftExpression[?Yield, ?Await]
</emu-grammar>
<emu-note>
<p>The <sub>[In]</sub> grammar parameter is needed to avoid confusing the `in` operator in a relational expression with the `in` operator in a `for` statement.</p>
Expand Down Expand Up @@ -17184,6 +17187,17 @@ <h1>Runtime Semantics: Evaluation</h1>
1. If Type(_rval_) is not Object, throw a *TypeError* exception.
1. Return ? HasProperty(_rval_, ? ToPropertyKey(_lval_)).
</emu-alg>
<emu-grammar>RelationalExpression : PrivateIdentifier `in` ShiftExpression</emu-grammar>
<emu-alg>
1. Let _privateIdentifier_ be the StringValue of |PrivateIdentifier|.
1. Let _rref_ be the result of evaluating |ShiftExpression|.
1. Let _rval_ be ? GetValue(_rref_).
1. If Type(_rval_) is not Object, throw a *TypeError* exception.
1. Let _privateEnv_ be the running execution context's PrivateEnvironment.
1. Let _privateName_ be ! ResolvePrivateIdentifier(_privateEnv_, _privateIdentifier_).
1. If ! PrivateElementFind(_privateName_, _rval_) is not ~empty~, return *true*.
1. Return *false*.
</emu-alg>
</emu-clause>

<emu-clause id="sec-instanceofoperator" aoid="InstanceofOperator">
Expand Down Expand Up @@ -21226,6 +21240,13 @@ <h1>Static Semantics: AllPrivateIdentifiersValid</h1>
1. Let _newNames_ be the list-concatenation of _names_ and PrivateBoundIdentifiers of |ClassBody|.
1. Return AllPrivateIdentifiersValid of |ClassElementList| with argument _newNames_.
</emu-alg>

<emu-grammar>RelationalExpression : PrivateIdentifier `in` ShiftExpression</emu-grammar>
<emu-alg>
1. If _names_ contains the StringValue of |PrivateIdentifier|, then
1. Return AllPrivateIdentifiersValid of |ShiftExpression| with argument _names_.
1. Return *false*.
</emu-alg>
</emu-clause>

<emu-clause id="sec-static-semantics-privateboundidentifiers" type="sdo" aoid="PrivateBoundIdentifiers">
Expand Down Expand Up @@ -22088,6 +22109,7 @@ <h1>Expression Rules</h1>
RelationalExpression `&gt;=` ShiftExpression
RelationalExpression `instanceof` ShiftExpression
RelationalExpression `in` ShiftExpression
PrivateIdentifier `in` ShiftExpression

ShiftExpression :
ShiftExpression `&lt;&lt;` AdditiveExpression
Expand Down