Fix various highlighting errors

[DaelonSuzuka]

This PR will have a collection of syntax highlighting improvements, starting with issues outlined in #379,

• in keyword

• await and super

• get and set (harder)

• @annotation syntax

I'm not sure if the list of "decorator" keywords is exhaustive, but the basic mechanism definitely works.

• investigate other new Godot 4 features
• lambdas

• type arrays

• trait and namespace

[DaelonSuzuka]

@Calinou I couldn't find any other new GDScript features that were missing syntax highlighting.

Let me know if you hate any of my colorization choices. I was torn on giving @annotations a more exotic color, but I actually think it looks fine like this.

[Calinou]

Let me know if you hate any of my colorization choices. I was torn on giving @annotations a more exotic color, but I actually think it looks fine like this.

Does VS Code have a standard annotation color (e.g. the one used in Python, or for preprocessor keywords in C/C++)?

[Calinou]

I think it'd be good idea to submit this code as a GDScript integration test in godotengine/godot 🙂

I can look into doing that (same for gdscript1.gd).

[DaelonSuzuka]

Is there an ergonomic way to automate a highlighting test? I haven't been able to think of one that wouldn't be a massive pain to define the success/failure conditions.

I think finding a way to share test files with the engine is a great idea, though. Having files that we know exercise all of the compiler's features would really increase confidence that we're covering all the possible syntax.

[Calinou]

Thanks!

We can change the annotation color in a future PR.

[DaelonSuzuka]

Does VS Code have a standard annotation color (e.g. the one used in Python, or for preprocessor keywords in C/C++)?

The current annotation color is the same as python's decorators. Godot's script editor colors the annotations like keywords, but I thought that didn't look quite as good here. C/C++ preprocessor things are mostly just blue like keywords, as far as I remember. I know rust has some complicated syntax, I can see what they do for meta-informational markings like this. C# and C++ might also have something similar.