Go to definition from text position with roslyn

Question

How to get file name and position of definition of any symbol under the current custom position and file (within project or solution)?

I do the following steps (simplified explanation):

1. Create collection of syntax trees and compilation by the following way:

   SyntaxTrees = new List<SyntaxTree>();
   foreach (var file in projectFiles)
       syntaxTrees.Add(SyntaxTree.ParseText(File.ReadAllText(file));
   Compilation = Compilation.Create("temp.cs", null, SyntaxTrees, new MetadataReference[] { mscorlib });
   

2. Get current token in syntax tree:

   var token = currentTree.GetRoot().FindToken(textPos, false);
   

Symbol have appropriate method for definition getting: DeclaringSyntaxNodes. How can I resolve token on Symbol in SemanticModel? Thanks.

Answer 1

You're looking for the SymbolFinder.FindSymbolAtPosition method.