Step 1: Add HostProject
This is a somewhat complex addition to the ProjectSnapshotManager. Now
that we accept updates from the underlying IDE project system we need to
coordinate those with the Workspace.
This means that ProjectSnapshot itself now also has a version concept.
Step 2: Introduce a new project system based on CPS
We use project capabilities defined by the Razor SDK to determine
whether to rely on MSBuild evaluation to detect the configuration or
whether to fallback to assembly-based detection.
Step 3: Flow RazorConfiguration everywhere
We use now expose the RazorConfiguration to the language service and
editor. This means that we no longer need to detect the project's
configuration asynchronously, it happens much faster now.
- Restructured RazorLanguageVersion to be a sealed concrete type to enable things like `RazorLanguageVersion.Latest`; it also allows us to make broader changes in the future. Also, in the future if we want to add support for overriding operators to enable greater than comparisons we can as well.
- Removed version validity checks because we restrict who can construct a `RazorLanguageVersion` now. This way we don't have to check for valid versions all throughout our code.
- Added a simple `ProjectExtensibilityConfiguration` => `RazorLanguageVersion` method in the `DefaultProjectExtensibilityConfigurationFactory` to temporarily enable letting the system operate on the `RazorLanguageVersion`. Eventually that entire class will change.
#1961
This change adds an actual background worker for listening to project
change notifications and starts sending updates when the project's razor
dependencies change.
I had to do a litle surgery to get things working. There were plenty of
small bug fixes.
Additionally I got rid of the WeakReferences for tracking listeners. I
was seeing TextBuffers hanging around in VS longer than I expected and
the WeakReferences weren't getting cleaned up. I think it's better that
we just track the lifetime.
Ryan Nowak
Nate McMaster
N. Taylor Mullen
Ajay Bhargav Baaskaran