NullReferenceException in CssOriginValue when using `transform-origin: bottom`

[meziantou]

Prerequisites

• Can you reproduce the problem in a MWE?
• Are you running the latest version of AngleSharp.Css?
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Description

Sorry, I don't have a MWE yet. I tried to strip down the code, the CssOriginValue can have null _z for transform-origin: bottom. So, there is a NullReferenceException in the compute method:

I'll try to create an MWE tomorrow if needed.

Steps to Reproduce

I will try to create a repro tomorrow

Expected Behavior

No exception

Actual Behavior

NullReferenceException

Possible Solution / Known Workarounds

No response

[FlorianRappl]

I don't think an MWE is needed. In all three cases we should use, e.g., z?.Compute(context). null is an expected value here.

[meziantou]

Thanks for the feedback. I'll submit a fix today or later this week.

BTW, any plan to enable nullable reference types in this project?

[FlorianRappl]

-> https://github.com/AngleSharp/AngleSharp.Css/tree/feature/nullable.