Accessing VS complete solution in roslyn

Question

How can we access the complete visual studio solution from code analyzer in Roslyn?

I have been trying semantic analysis without much help.

var sol = ((Microsoft.CodeAnalysis.Diagnostics.WorkspaceAnalyzerOptions)context.Options)
    .Workspace.CurrentSolution;

This is what I came up with using intellisense but this always gives a null value.

Answer 1

In general, you can't. Analyzers run as part of commandline builds in csc and vbc, which have no notion of Workspaces or Solutions.

We are considering adding a VS specific analyzer API that would allow access to the Solution, but for Roslyn's 1.0 release, there is no supported way to do so.

Answer 2

For the moment WorkspaceAnalyzerOptions is internal sealed. One can use context.Options with reflection. Hacky, but working.

Solution solution =
    ((HostWorkspaceServices)context
    .Options
    .GetType()
    .GetRuntimeProperty("Services")
    .GetValue(context.Options))
    .Workspace
    .CurrentSolution;

Note, along with it the compiler gives a warning:

RS1022 Change diagnostic analyzer type to remove all direct accesses to type(s) 'Microsoft.CodeAnalysis.Host.HostWorkspaceServices, Microsoft.CodeAnalysis.Solution, Microsoft.CodeAnalysis.Workspace'