csharp-tmLanguage | Syntax grammar used for C # colorization | Code Quality library

I'm interested in creating a code editor app for Android in C# (using Xamarin). Obviously, one of the necessities for any great code editor is syntax highlighting for a wide range of popular languages. I don't want to write custom tokenizers for all of these languages myself, so I'm looking for a library that already has grammars for them.

From my time browsing the VSCode editor source code, I know that there are many predefined grammar files for certain languages, in .tmLanguage (TextMate-style) or .cson (Atom-style) format. For example, here are a bunch of grammars maintained by Atom, and here is the official C# grammar maintained by the .NET Foundation.

I initially sought a .NET library that would parse these files and allow me to match them against expressions, but AFAICS none exists. Something like vscode-textmate or textpow would be just what I'm looking for, but those are not written in .NET.

Can anyone point me to a library that would help me with this purpose? Also, would it be a good idea to use a .NET JavaScript engine to execute functions from the above libraries if I can't find any? Normally I wouldn't hesitate to use an engine, but I'm afraid delays of a few hundred ms would not be acceptable for syntax highlighting.