C#: Improved pattern matching#2411
Merged
RunDevelopment merged 2 commits intoPrismJS:masterfrom Jun 12, 2020
Merged
Conversation
mAAdhaTTah
approved these changes
Jun 11, 2020
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
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Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be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.
In preparation for C# 9.0, I added support for more pattern matching.
Because of the extremely context-sensitive nature of the new pattern matching, a lot of the new features are crudely approximated. It's not ideal but the pattern matching grammar is so complex that I can't think of anything better.
Because
switchstatements and expression got a whole lot more complex, I also added a few new tests.I make separate PRs for other new syntactic features of C# 9.0 after they get finalized.