How can I check null! or null in property initializer?

[KyouyamaKazusa0805]

Hello! I'm stuck in checking property initializer.

I want to check the properties with null! or null as the property initializer:

public Class? Property1 { get; }
public Class Property2 { get; } = null!;
public Class? Property3 { get; } = null;

As the example shown, properties Property2 and Property3 should be detected as I expected. How can I write code using Roslyn to check them?

Thanks.

[bernd5]

You mean that you want to find properties explicitly initialized with null or null!?
Why?
Property1 is null, too.

[PathogenDavid]

The expression for Property2 will be wrapped in a SuppressNullableWarningExpression, whereas Property3 will not.

SharpLab has a nice visualization of the syntax tree:

[KyouyamaKazusa0805]

That's awesome! Thank you :D

[PathogenDavid]

No problem, glad I could help!

[PathogenDavid]

BTW, I forgot to mention a similar tool exists within Visual Studio as well.