Invoking "Go to Definition" in an untitled script causes a host crash

[Rick-2CA]

System Details

• Operating system name and version:
  Win 8.1 Pro
• VS Code version:
  1.10.2
  8076a19fdcab7e1fc1707952d652f0bb6c6db331
• PowerShell extension version:
  christian-kohler.path-intellisense@1.2.0
  emilast.LogFileHighlighter@1.1.1
  ivangabriele.vscode-tfs@0.6.0
  ms-vscode.PowerShell@0.11.0
  ms-vsts.team@1.115.0
• Output from $PSVersionTable:
  PSVersion 5.0.10586.117
  PSCompatibleVersions {1.0, 2.0, 3.0, 4.0...}
  BuildVersion 10.0.10586.117
  CLRVersion 4.0.30319.42000
  WSManStackVersion 3.0
  PSRemotingProtocolVersion 2.3
  SerializationVersion 1.1.0.1

Issue Description

The application reports that the PowerShell console has crashed and prompts me with a Yes | No | Close for restarting it. The terminal is still functional after hitting close. I'm not using the terminal before the crash is reported.

Attached Logs

Logs being sent to David.

[daviwil]

Looks like we're not handling untitled file paths in code navigation actions. Here is the relevant part of the logs:

4/4/2017 10:02:49 AM [VERBOSE] - Method "ReadMessage" at line 111 of C:\projects\powershelleditorservices\src\PowerShellEditorServices.Protocol\MessageProtocol\MessageReader.cs

    READ MESSAGE:
    
    {
      "jsonrpc": "2.0",
      "id": 439,
      "method": "textDocument/definition",
      "params": {
        "uri": "untitled:Untitled-1",
        "position": {
          "line": 0,
          "character": 5
        }
      }
    }

4/4/2017 10:02:49 AM [VERBOSE] - Method "ResolveFilePath" at line 294 of C:\projects\powershelleditorservices\src\PowerShellEditorServices\Workspace\Workspace.cs

    Resolved path: untitled:Untitled-1

4/4/2017 10:02:49 AM [ERROR] - Method "OnListenTaskCompleted" at line 337 of C:\projects\powershelleditorservices\src\PowerShellEditorServices.Protocol\MessageProtocol\MessageDispatcher.cs

    MessageDispatcher loop terminated due to unhandled exception:
    
    System.AggregateException: One or more errors occurred. ---> System.UriFormatException: Invalid URI: The hostname could not be parsed.
       at System.Uri.CreateThis(String uri, Boolean dontEscape, UriKind uriKind)
       at Microsoft.PowerShell.EditorServices.Protocol.Server.LanguageServer.<HandleDefinitionRequest>d__34.MoveNext()
    --- End of stack trace from previous location where exception was thrown ---
       at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
       at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
       at Microsoft.PowerShell.EditorServices.Protocol.MessageProtocol.MessageDispatcher.<DispatchMessage>d__33.MoveNext()
    --- End of stack trace from previous location where exception was thrown ---
       at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
       at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
       at Microsoft.PowerShell.EditorServices.Protocol.MessageProtocol.MessageDispatcher.<ListenForMessages>d__32.MoveNext()
    --- End of stack trace from previous location where exception was thrown ---
       at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
       at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
       at Microsoft.PowerShell.EditorServices.Utility.AsyncContext.Start(Func`1 asyncMainFunc)
       at System.Threading.Tasks.Task.Execute()
       --- End of inner exception stack trace ---
    ---> (Inner Exception #0) System.UriFormatException: Invalid URI: The hostname could not be parsed.
       at System.Uri.CreateThis(String uri, Boolean dontEscape, UriKind uriKind)
       at Microsoft.PowerShell.EditorServices.Protocol.Server.LanguageServer.<HandleDefinitionRequest>d__34.MoveNext()
    --- End of stack trace from previous location where exception was thrown ---
       at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
       at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
       at Microsoft.PowerShell.EditorServices.Protocol.MessageProtocol.MessageDispatcher.<DispatchMessage>d__33.MoveNext()
    --- End of stack trace from previous location where exception was thrown ---
       at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
       at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
       at Microsoft.PowerShell.EditorServices.Protocol.MessageProtocol.MessageDispatcher.<ListenForMessages>d__32.MoveNext()
    --- End of stack trace from previous location where exception was thrown ---
       at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
       at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
       at Microsoft.PowerShell.EditorServices.Utility.AsyncContext.Start(Func`1 asyncMainFunc)
       at System.Threading.Tasks.Task.Execute()<---