Using roslyn for hover over data for source tree symbols

Question

QUESTION: How do I apply my personal DocumentationProvider to source tree symbols? Which is the type of symbol i get when i use the SymbolFinder.FindSymbolAtPosition()

Specifically I want to override the GetDocumentationForSymbol() function. I have it overridden for my autocomplete symbols but not the symbols i get from hover over.

BACKGROUND:

Hi, I am using roslyn to gather intellisense for a text editor i am creating. One of the things i need to make is quick info or tool tips. I have it working for the autocomplete suggestions. by using a snippet that looks like this

   compilation = CSharpCompilation.Create(
        "MyIntellisense",
        new[] { CSharpSyntaxTree.ParseText(dotNetCode) },
        assemblies
    .Select(i => MetadataReference
    .CreateFromFile(i.Location, MetadataReferenceProperties.Assembly,
    new DotNetDocumentationProvider(
    new CSharpCompilationOptions(OutputKind.DynamicallyLinkedLibrary));

this uses my own personal DotNetDocumentationProvider which parses XML and documentation the way I need it. This works for assembly symbols which are the types of symbols I have when i use Recommender.GetRecommendedSymbolsAtPosition().

EDIT: Just wanted to give more background :)

I get symbols in two different ways.

1) One way is when I call

var symbols = Recommender.GetRecommendedSymbolsAtPosition(semanticModel, offset, solution.Workspace);

I use this when the user asks for auto-complete information With these symbols I can go through and for each one call:

var information = symbol.GetDocumentationCommentXml();

This eventually calls a function I have overridden from the class DocumentationProvider :

protected override string GetDocumentationForSymbol(string documentationMemberID, CultureInfo preferredCulture, CancellationToken cancellationToken = default(CancellationToken))

2) The second way is for when the user hovers over

var symbol = SymbolFinder.FindSymbolAtPosition(semanticModel, offset, workspace, cancellationToken);

I call the exact same function (from the same line of code actually, keeping it DRY)

var information = symbol.GetDocumentationCommentXml();

But this does not invoke my overridden GetDocumentationCommentXml() instead the default Roslyn one is called.

Thanks!

Answer 1

Not finding all of the symbols I need,How to find more symbols using the Roslyn API

Another question I asked, when I solved this issue it then solved the problem i was having here. The problem was that i thought

_workspace.CurrentSolution.AddMetadataReferences(_currentProject.Id,_compilation.References);

updated the workspace i was working in. but it does not it returns a solution with the references added. i needed to use

_workspace.TryApplyChanges(referenceSolution);

to save it. Thanks to Jason for answering my other question found at the link. If you post here i will mark it as an answer.