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Null propagation expression does not allow `!` as a nested operator form #3393

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agocke opened this issue Apr 24, 2020 · 1 comment
Open

Null propagation expression does not allow `!` as a nested operator form #3393

agocke opened this issue Apr 24, 2020 · 1 comment
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@gafter
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@agocke
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@agocke agocke commented Apr 24, 2020

See dotnet/docs#17988

This means that the only correct parse of

var x = a?.b.c!.d.e;

is (a?.b.c)!.d.e, which prevents usage of null-forgiving in a chain of null-propagating accesses. To remedy this we could accept ! as an optional token after every simple name in the null-propagating non-terminal.

cc @jcouv @gafter
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@AntonLapounov AntonLapounov commented Apr 24, 2020

I was not aware of this issue and filed dotnet/roslyn#43659.
@jcouv jcouv mentioned this issue Apr 24, 2020
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@BillWagner BillWagner mentioned this issue Apr 28, 2020
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@gafter gafter added this to TRIAGE NEEDED in Language Version Planning Apr 29, 2020
@gafter gafter self-assigned this Apr 29, 2020
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