Remove more blocking on async calls.

src/EditorFeatures/CSharp/AutomaticCompletion/AutomaticLineEnderCommandHandler.cs

@@ -109,7 +109,7 @@ protected override string GetEndingString(Document document, int position, Cance
             // prepare expansive information from document
             var tree = document.GetSyntaxTreeSynchronously(cancellationToken);
             var root = tree.GetRoot(cancellationToken);
-            var text = tree.GetTextAsync(cancellationToken).WaitAndGetResult(cancellationToken);
+            var text = tree.GetText(cancellationToken);
             var semicolon = SyntaxFacts.GetText(SyntaxKind.SemicolonToken);
 
             // Go through the set of owning nodes in leaf to root chain.

src/EditorFeatures/Core/Implementation/AutomaticCompletion/AbstractAutomaticLineEnderCommandHandler.cs

@@ -140,7 +140,7 @@ public void ExecuteCommand(AutomaticLineEnderCommandArgs args, Action nextHandle
         private int? GetInsertionPoint(Document document, ITextSnapshotLine line, CancellationToken cancellationToken)
         {
             var root = document.GetSyntaxRootSynchronously(cancellationToken);
-            var text = document.GetTextAsync(cancellationToken).WaitAndGetResult(cancellationToken);
+            var text = root.SyntaxTree.GetText(cancellationToken);
 
             var syntaxFacts = document.GetLanguageService<ISyntaxFactsService>();
 

src/EditorFeatures/Core/Implementation/DocumentationComments/AbstractDocumentationCommentCommandHandler.cs

@@ -447,8 +447,8 @@ private void AddLineBreaks(SourceText text, IList<string> lines)
                 return false;
             }
 
-            var text = document.GetTextAsync(cancellationToken).WaitAndGetResult(cancellationToken);
             var syntaxTree = document.GetSyntaxTreeSynchronously(cancellationToken);
+            var text = syntaxTree.GetText(cancellationToken);
             return insertAction(syntaxTree, text, caretPosition, originalCaretPosition, subjectBuffer, textView, cancellationToken);
         }
 
@@ -552,8 +552,8 @@ public CommandState GetCommandState(InsertCommentCommandArgs args, Func<CommandS
             TMemberNode targetMember = null;
             _waitIndicator.Wait("IntelliSense", allowCancel: true, action: c =>
             {
-                var text = document.GetTextAsync(c.CancellationToken).WaitAndGetResult(c.CancellationToken);
                 var syntaxTree = document.GetSyntaxTreeSynchronously(c.CancellationToken);
+                var text = syntaxTree.GetText(c.CancellationToken);
                 targetMember = GetTargetMember(syntaxTree, text, caretPosition, c.CancellationToken);
             });
 

src/EditorFeatures/Core/Implementation/Preview/PreviewFactoryService.cs

@@ -539,7 +539,8 @@ private ITextBuffer CreateNewBuffer(Document document, CancellationToken cancell
             var contentTypeService = document.Project.LanguageServices.GetService<IContentTypeLanguageService>();
             var contentType = contentTypeService.GetDefaultContentType();
 
-            return _textBufferFactoryService.CreateTextBuffer(document.GetTextAsync(cancellationToken).WaitAndGetResult(cancellationToken).ToString(), contentType);
+            return _textBufferFactoryService.CreateTextBuffer(
+                document.GetTextAsync(cancellationToken).WaitAndGetResult(cancellationToken).ToString(), contentType);
         }
 
         private ITextBuffer CreateNewPlainTextBuffer(TextDocument document, CancellationToken cancellationToken)
@@ -548,7 +549,8 @@ private ITextBuffer CreateNewPlainTextBuffer(TextDocument document, Cancellation
 
             var contentType = _textBufferFactoryService.TextContentType;
 
-            return _textBufferFactoryService.CreateTextBuffer(document.GetTextAsync(cancellationToken).WaitAndGetResult(cancellationToken).ToString(), contentType);
+            return _textBufferFactoryService.CreateTextBuffer(
+                document.GetTextAsync(cancellationToken).WaitAndGetResult(cancellationToken).ToString(), contentType);
         }
 
         private async Task<object> CreateNewDifferenceViewerAsync(PreviewWorkspace leftWorkspace, PreviewWorkspace rightWorkspace,

src/EditorFeatures/VisualBasic/AutomaticCompletion/AutomaticLineEnderCommandHandler.vb

@@ -44,7 +44,7 @@ Namespace Microsoft.CodeAnalysis.Editor.VisualBasic.AutomaticCompletion
         Protected Overrides Function GetEndingString(document As Document, position As Integer, cancellationToken As CancellationToken) As String
             ' prepare expansive information from document
             Dim root = document.GetSyntaxRootSynchronously(cancellationToken)
-            Dim text = document.GetTextAsync(cancellationToken).WaitAndGetResult(cancellationToken)
+            Dim text = root.SyntaxTree.GetText(cancellationToken)
 
             ' get line where the caret is on
             Dim line = text.Lines.GetLineFromPosition(position)

src/VisualStudio/Core/Def/Implementation/LanguageService/AbstractLanguageService`2.IVsLanguageTextOps.cs

@@ -47,8 +47,8 @@ private int FormatWorker(IVsTextLayer textLayer, TextSpan[] selections, Cancella
                 return VSConstants.E_FAIL;
             }
 
-            var text = document.GetTextAsync(cancellationToken).WaitAndGetResult(cancellationToken);
             var root = document.GetSyntaxRootSynchronously(cancellationToken);
+            var text = root.SyntaxTree.GetText(cancellationToken);
 
             var ts = selections.Single();
             int start = text.Lines[ts.iStartLine].Start + ts.iStartIndex;

src/VisualStudio/Core/Def/Implementation/Preview/FileChange.cs

@@ -48,9 +48,9 @@ internal class FileChange : AbstractChange
 
             _componentModel = componentModel;
             var bufferFactory = componentModel.GetService<ITextBufferFactoryService>();
-            var bufferText = left != null ?
-                left.GetTextAsync(CancellationToken.None).WaitAndGetResult(CancellationToken.None) :
-                right.GetTextAsync(CancellationToken.None).WaitAndGetResult(CancellationToken.None);
+            var bufferText = left != null
+                ? left.GetTextAsync(CancellationToken.None).WaitAndGetResult(CancellationToken.None)
+                : right.GetTextAsync(CancellationToken.None).WaitAndGetResult(CancellationToken.None);
             _buffer = bufferFactory.CreateTextBuffer(bufferText.ToString(), bufferFactory.InertContentType);
             _encoding = bufferText.Encoding;
 

src/VisualStudio/Core/Def/Implementation/Snippets/SnippetFunctions/AbstractSnippetFunctionSimpleTypeName.cs

@@ -82,4 +82,4 @@ private bool TryGetDocumentWithFullyQualifiedTypeName(Document document, out Tex
             return true;
         }
     }
-}
+}
\ No newline at end of file

src/VisualStudio/Core/Def/Implementation/Workspace/VisualStudioFormattingRuleFactoryServiceFactory.cs

@@ -81,7 +81,7 @@ public IFormattingRule CreateRule(Document document, int position)
                     var spans = pooledObject.Object;
 
                     var root = document.GetSyntaxRootSynchronously(CancellationToken.None);
-                    var text = document.GetTextAsync(CancellationToken.None).WaitAndGetResult(CancellationToken.None);
+                    var text = root.SyntaxTree.GetText(CancellationToken.None);
 
                     spans.AddRange(containedDocument.GetEditorVisibleSpans());