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Editorial: have CreateIteratorFromClosure provide a new execution context to GeneratorStart #2398

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Jul 7, 2021
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Editorial: have CreateIteratorFromClosure provide a new execution context to GeneratorStart #2398

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16 changes: 16 additions & 0 deletions spec.html
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Original file line number Diff line number Diff line change
Expand Up @@ -39816,7 +39816,15 @@ <h1>CreateIteratorFromClosure ( _closure_, _generatorBrand_, _generatorPrototype
1. Let _generator_ be ! OrdinaryObjectCreate(_generatorPrototype_, _internalSlotsList_).
1. Set _generator_.[[GeneratorBrand]] to _generatorBrand_.
1. Set _generator_.[[GeneratorState]] to *undefined*.
1. Let _callerContext_ be the running execution context.
1. Let _calleeContext_ be a new execution context.
1. Set the Function of _calleeContext_ to *null*.
1. Set the Realm of _calleeContext_ to the current Realm Record.
1. Set the ScriptOrModule of _calleeContext_ to _callerContext_'s ScriptOrModule.
1. If _callerContext_ is not already suspended, suspend _callerContext_.
1. Push _calleeContext_ onto the execution context stack; _calleeContext_ is now the running execution context.
1. Perform ! GeneratorStart(_generator_, _closure_).
1. Remove _calleeContext_ from the execution context stack and restore _callerContext_ as the running execution context.
1. Return _generator_.
</emu-alg>
</emu-clause>
Expand Down Expand Up @@ -40115,7 +40123,15 @@ <h1>CreateAsyncIteratorFromClosure ( _closure_, _generatorBrand_, _generatorProt
1. Let _generator_ be ! OrdinaryObjectCreate(_generatorPrototype_, _internalSlotsList_).
1. Set _generator_.[[GeneratorBrand]] to _generatorBrand_.
1. Set _generator_.[[AsyncGeneratorState]] to *undefined*.
1. Let _callerContext_ be the running execution context.
1. Let _calleeContext_ be a new execution context.
1. Set the Function of _calleeContext_ to *null*.
1. Set the Realm of _calleeContext_ to the current Realm Record.
1. Set the ScriptOrModule of _calleeContext_ to _callerContext_'s ScriptOrModule.
1. If _callerContext_ is not already suspended, suspend _callerContext_.
1. Push _calleeContext_ onto the execution context stack; _calleeContext_ is now the running execution context.
1. Perform ! AsyncGeneratorStart(_generator_, _closure_).
1. Remove _calleeContext_ from the execution context stack and restore _callerContext_ as the running execution context.
1. Return _generator_.
</emu-alg>
</emu-clause>
Expand Down