Update language server protocol

This change updates the language server protocol to respond to some last
minute changes in VS Code's JSON RPC messages.

Author: daviwil

src/PowerShellEditorServices.Host/LanguageServer.cs

@@ -177,16 +177,16 @@ protected Task HandleDidCloseTextDocumentNotification(
         }
 
         protected Task HandleDidChangeTextDocumentNotification(
-            DidChangeTextDocumentNotification[] textChangeParams,
+            DidChangeTextDocumentParams textChangeParams,
             EditorSession editorSession,
             EventContext eventContext)
         {
             List<ScriptFile> changedFiles = new List<ScriptFile>();
 
             // A text change notification can batch multiple change requests
-            foreach (var textChange in textChangeParams)
+            foreach (var textChange in textChangeParams.ContentChanges)
             {
-                ScriptFile changedFile = editorSession.Workspace.GetFile(textChange.Uri);
+                ScriptFile changedFile = editorSession.Workspace.GetFile(textChangeParams.Uri);
 
                 changedFile.ApplyChange(
                     GetFileChangeDetails(

src/PowerShellEditorServices.Protocol/LanguageServer/CompletionMessages.cs

@@ -75,6 +75,14 @@ public class CompletionItem
         public string InsertText { get; set; }
 
         public TextEdit TextEdit { get; set; }
+
+        /// <summary>
+        /// Gets or sets a custom data field that allows the server to mark
+        /// each completion item with an identifier that will help correlate
+        /// the item to the previous completion request during a completion
+        /// resolve request.
+        /// </summary>
+        public object Data { get; set; }
     }
 }
 

src/PowerShellEditorServices.Protocol/LanguageServer/References.cs

@@ -16,10 +16,10 @@ public static readonly
 
     public class ReferencesParams : TextDocumentPosition
     {
-        public ReferencesOptions Options { get; set; }
+        public ReferencesContext Context { get; set; }
     }
 
-    public class ReferencesOptions
+    public class ReferencesContext
     {
         public bool IncludeDeclaration { get; set; }
     }

src/PowerShellEditorServices.Protocol/LanguageServer/TextDocumentMessages.cs

@@ -49,12 +49,23 @@ public static readonly
             EventType<TextDocumentIdentifier>.Create("textDocument/didClose");
     }
 
-    public class DidChangeTextDocumentNotification : TextDocumentIdentifier
+    public class DidChangeTextDocumentNotification
     {
         public static readonly
-            EventType<DidChangeTextDocumentNotification[]> Type =
-            EventType<DidChangeTextDocumentNotification[]>.Create("textDocument/didChange");
+            EventType<DidChangeTextDocumentParams> Type =
+            EventType<DidChangeTextDocumentParams>.Create("textDocument/didChange");
+    }
 
+    public class DidChangeTextDocumentParams : TextDocumentIdentifier
+    {
+        /// <summary>
+        /// Gets or sets the list of changes to the document content.
+        /// </summary>
+        public TextDocumentChangeEvent[] ContentChanges { get; set; }
+    }
+
+    public class TextDocumentChangeEvent
+    {
         /// <summary>
         /// Gets or sets the Range where the document was changed.  Will
         /// be null if the server's TextDocumentSyncKind is Full.