feat: support C# 8 and nullable reference types #245
Merged
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Resolves #240
This updates the project to compile using C# 8.0 and takes advantage of the nullable reference types feature. Beyond adding nullability annotations, this uncovered a few places where null ref exceptions were possible, so a few minor behavior changes were required.
This also motivated a refactor of CommandLineParser to use pattern matching instead of an enums.
Includes workarounds for dotnet/roslyn#33199 and xunit/xunit#1897