public async void UpdatePreview(string text)
{
var workspace = new PreviewWorkspace(Ide.Composition.CompositionManager.Instance.HostServices);
var fileName = string.Format("project.{0}", Language == "C#" ? "csproj" : "vbproj");
project = workspace.CurrentSolution.AddProject(fileName, "assembly.dll", Language);
// use the mscorlib, system, and system.core that are loaded in the current process.
string [] references =
{
"mscorlib",
"System",
"System.Core"
};
var metadataService = workspace.Services.GetService <IMetadataService> ();
var referenceAssemblies = Thread.GetDomain().GetAssemblies()
.Where(x => references.Contains(x.GetName(true).Name, StringComparer.OrdinalIgnoreCase))
.Select(a => metadataService.GetReference(a.Location, MetadataReferenceProperties.Assembly));
project = project.WithMetadataReferences(referenceAssemblies);
var document = project.AddDocument("document.cs", SourceText.From(text, Encoding.UTF8));
var formatted = Formatter.FormatAsync(document, this.Options).WaitAndGetResult(CancellationToken.None);
workspace.TryApplyChanges(project.Solution);
TextViewHost.MimeType = "text/x-csharp";
TextViewHost.Text = (await document.GetTextAsync()).ToString();
TextViewHost.DocumentContext = new MyDocumentContext(workspace, document);
TextViewHost.IsReadOnly = false;
for (int i = 1; i <= TextViewHost.LineCount; i++)
{
var txt = TextViewHost.GetLineText(i);
if (txt == "//[" || txt == "//]")
{
var line = TextViewHost.GetLine(i);
TextViewHost.RemoveText(line.Offset, line.LengthIncludingDelimiter);
i--;
}
}
TextViewHost.IsReadOnly = true;
if (curWorkspace != null)
{
curWorkspace.Dispose();
}
this.curWorkspace = workspace;
}
public void UpdatePreview(string text)
{
const string start = "//[";
const string end = "//]";
var service = MefV1HostServices.Create(_componentModel.DefaultExportProvider);
var workspace = new PreviewWorkspace(service);
var fileName = string.Format("project.{0}", Language == "C#" ? "csproj" : "vbproj");
var project = workspace.CurrentSolution.AddProject(fileName, "assembly.dll", Language);
// use the mscorlib, system, and system.core that are loaded in the current process.
string[] references =
{
"mscorlib",
"System",
"System.Core"
};
var metadataService = workspace.Services.GetService <IMetadataService>();
var referenceAssemblies = Thread.GetDomain().GetAssemblies()
.Where(x => references.Contains(x.GetName(true).Name, StringComparer.OrdinalIgnoreCase))
.Select(a => metadataService.GetReference(a.Location, MetadataReferenceProperties.Assembly));
project = project.WithMetadataReferences(referenceAssemblies);
var document = project.AddDocument("document", SourceText.From(text, Encoding.UTF8));
var formatted = Formatter.FormatAsync(document, this.Options).WaitAndGetResult(CancellationToken.None);
var textBuffer = _textBufferFactoryService.CreateTextBuffer(formatted.GetTextAsync().Result.ToString(), _contentType);
var container = textBuffer.AsTextContainer();
var documentBackedByTextBuffer = document.WithText(container.CurrentText);
var bufferText = textBuffer.CurrentSnapshot.GetText().ToString();
var startIndex = bufferText.IndexOf(start, StringComparison.Ordinal);
var endIndex = bufferText.IndexOf(end, StringComparison.Ordinal);
var startLine = textBuffer.CurrentSnapshot.GetLineNumberFromPosition(startIndex) + 1;
var endLine = textBuffer.CurrentSnapshot.GetLineNumberFromPosition(endIndex);
var projection = _projectionBufferFactory.CreateProjectionBufferWithoutIndentation(_contentTypeRegistryService,
_editorOptions.CreateOptions(),
textBuffer.CurrentSnapshot,
"",
LineSpan.FromBounds(startLine, endLine));
var textView = _textEditorFactoryService.CreateTextView(projection,
_textEditorFactoryService.CreateTextViewRoleSet(PredefinedTextViewRoles.Analyzable));
this.TextViewHost = _textEditorFactoryService.CreateTextViewHost(textView, setFocus: false);
workspace.TryApplyChanges(documentBackedByTextBuffer.Project.Solution);
workspace.OpenDocument(document.Id);
this.TextViewHost.Closed += (s, a) =>
{
workspace.Dispose();
workspace = null;
};
}
public void Dispose()
{
Debug.Assert(!_disposed);
_disposed = true;
_workspace.Dispose();
_workspace = null;
}
public void TestPreviewWorkspaceDoesNotLeakSolution()
{
// Verify that analyzer execution doesn't leak solution instances from the preview workspace.
var previewWorkspace = new PreviewWorkspace();
Assert.NotNull(previewWorkspace.CurrentSolution);
var project = previewWorkspace.CurrentSolution.AddProject(
"project",
"project.dll",
LanguageNames.CSharp
);
Assert.True(previewWorkspace.TryApplyChanges(project.Solution));
var solutionObjectReference = ObjectReference.Create(previewWorkspace.CurrentSolution);
var analyzers = ImmutableArray.Create <DiagnosticAnalyzer>(
new CommonDiagnosticAnalyzers.NotConfigurableDiagnosticAnalyzer()
);
ExecuteAnalyzers(previewWorkspace, analyzers);
previewWorkspace.Dispose();
solutionObjectReference.AssertReleased();
}
public void UpdatePreview(string text)
{
var service = VisualStudioMefHostServices.Create(_componentModel.GetService <ExportProvider>());
var workspace = new PreviewWorkspace(service);
var fileName = "project." + (Language == "C#" ? "csproj" : "vbproj");
var project = workspace.CurrentSolution.AddProject(fileName, "assembly.dll", Language);
// use the mscorlib, system, and system.core that are loaded in the current process.
string[] references =
{
"mscorlib",
"System",
"System.Core"
};
var metadataService = workspace.Services.GetService <IMetadataService>();
var referenceAssemblies = Thread.GetDomain().GetAssemblies()
.Where(x => references.Contains(x.GetName(true).Name, StringComparer.OrdinalIgnoreCase))
.Select(a => metadataService.GetReference(a.Location, MetadataReferenceProperties.Assembly));
project = project.WithMetadataReferences(referenceAssemblies);
var document = project.AddDocument("document", SourceText.From(text, Encoding.UTF8));
var fallbackFormattingOptions = _globalOptions.GetSyntaxFormattingOptions(document.Project.LanguageServices);
var optionService = workspace.Services.GetRequiredService <IOptionService>();
var configOptions = OptionStore.GetOptions().AsAnalyzerConfigOptions(optionService, document.Project.Language);
var formattingService = document.GetRequiredLanguageService <ISyntaxFormattingService>();
var formattingOptions = formattingService.GetFormattingOptions(configOptions, fallbackFormattingOptions);
var formatted = Formatter.FormatAsync(document, formattingOptions, CancellationToken.None).WaitAndGetResult(CancellationToken.None);
var textBuffer = _textBufferFactoryService.CreateTextBuffer(formatted.GetTextSynchronously(CancellationToken.None).ToString(), _contentType);
var container = textBuffer.AsTextContainer();
var projection = _projectionBufferFactory.CreateProjectionBufferWithoutIndentation(_contentTypeRegistryService,
_editorOptions.CreateOptions(),
textBuffer.CurrentSnapshot,
separator: "",
exposedLineSpans: GetExposedLineSpans(textBuffer.CurrentSnapshot).ToArray());
var textView = _textEditorFactoryService.CreateTextView(projection,
_textEditorFactoryService.CreateTextViewRoleSet(PredefinedTextViewRoles.Interactive));
this.TextViewHost = _textEditorFactoryService.CreateTextViewHost(textView, setFocus: false);
workspace.TryApplyChanges(document.Project.Solution);
workspace.OpenDocument(document.Id, container);
this.TextViewHost.Closed += (s, a) =>
{
workspace.Dispose();
workspace = null;
};
}
private async ValueTask <DifferenceViewerPreview> CreateNewDifferenceViewerAsync(
PreviewWorkspace?leftWorkspace, PreviewWorkspace?rightWorkspace,
IProjectionBuffer originalBuffer, IProjectionBuffer changedBuffer,
double zoomLevel, CancellationToken cancellationToken)
{
// IWpfDifferenceViewerFactoryService is a Visual Studio API which is not documented as free-threaded
await ThreadingContext.JoinableTaskFactory.SwitchToMainThreadAsync(cancellationToken);
// leftWorkspace can be null if the change is adding a document.
// rightWorkspace can be null if the change is removing a document.
// However both leftWorkspace and rightWorkspace can't be null at the same time.
Contract.ThrowIfTrue((leftWorkspace == null) && (rightWorkspace == null));
var diffBuffer = _differenceBufferService.CreateDifferenceBuffer(
originalBuffer, changedBuffer,
new StringDifferenceOptions(), disableEditing: true);
var mode = leftWorkspace == null ? DifferenceViewMode.RightViewOnly :
rightWorkspace == null ? DifferenceViewMode.LeftViewOnly :
DifferenceViewMode.Inline;
var diffViewer = await CreateDifferenceViewAsync(diffBuffer, _previewRoleSet, mode, zoomLevel, cancellationToken).ConfigureAwait(true);
diffViewer.Closed += (s, e) =>
{
// Workaround Editor bug. The editor has an issue where they sometimes crash when
// trying to apply changes to projection buffer. So, when the user actually invokes
// a SuggestedAction we may then edit a text buffer, which the editor will then
// try to propagate through the projections we have here over that buffer. To ensure
// that that doesn't happen, we clear out the projections first so that this crash
// won't happen.
originalBuffer.DeleteSpans(0, originalBuffer.CurrentSnapshot.SpanCount);
changedBuffer.DeleteSpans(0, changedBuffer.CurrentSnapshot.SpanCount);
leftWorkspace?.Dispose();
leftWorkspace = null;
rightWorkspace?.Dispose();
rightWorkspace = null;
};
if (_globalOptions.GetOption(SolutionCrawlerRegistrationService.EnableSolutionCrawler))
{
leftWorkspace?.EnableSolutionCrawler();
rightWorkspace?.EnableSolutionCrawler();
}
return(new DifferenceViewerPreview(diffViewer));
}
private async Task <object> CreateNewDifferenceViewerAsync(PreviewWorkspace leftWorkspace, PreviewWorkspace rightWorkspace,
IProjectionBuffer originalBuffer, IProjectionBuffer changedBuffer, double zoomLevel, CancellationToken cancellationToken)
{
cancellationToken.ThrowIfCancellationRequested();
// leftWorkspace can be null if the change is adding a document.
// rightWorkspace can be null if the change is removing a document.
// However both leftWorkspace and rightWorkspace can't be null at the same time.
Contract.ThrowIfTrue((leftWorkspace == null) && (rightWorkspace == null));
var diffBuffer = _differenceBufferService.CreateDifferenceBuffer(
originalBuffer, changedBuffer,
new StringDifferenceOptions(), disableEditing: true);
var diffViewer = _differenceViewerService.CreateDifferenceView(diffBuffer, _previewRoleSet);
diffViewer.Closed += (s, e) =>
{
if (leftWorkspace != null)
{
leftWorkspace.Dispose();
leftWorkspace = null;
}
if (rightWorkspace != null)
{
rightWorkspace.Dispose();
rightWorkspace = null;
}
};
const string DiffOverviewMarginName = "deltadifferenceViewerOverview";
if (leftWorkspace == null)
{
diffViewer.ViewMode = DifferenceViewMode.RightViewOnly;
diffViewer.RightView.ZoomLevel *= zoomLevel;
diffViewer.RightHost.GetTextViewMargin(DiffOverviewMarginName).VisualElement.Visibility = Visibility.Collapsed;
}
else if (rightWorkspace == null)
{
diffViewer.ViewMode = DifferenceViewMode.LeftViewOnly;
diffViewer.LeftView.ZoomLevel *= zoomLevel;
diffViewer.LeftHost.GetTextViewMargin(DiffOverviewMarginName).VisualElement.Visibility = Visibility.Collapsed;
}
else
{
diffViewer.ViewMode = DifferenceViewMode.Inline;
diffViewer.InlineView.ZoomLevel *= zoomLevel;
diffViewer.InlineHost.GetTextViewMargin(DiffOverviewMarginName).VisualElement.Visibility = Visibility.Collapsed;
}
// Disable focus / tab stop for the diff viewer.
diffViewer.RightView.VisualElement.Focusable = false;
diffViewer.LeftView.VisualElement.Focusable = false;
diffViewer.InlineView.VisualElement.Focusable = false;
// This code path must be invoked on UI thread.
AssertIsForeground();
// We use ConfigureAwait(true) to stay on the UI thread.
await diffViewer.SizeToFitAsync().ConfigureAwait(true);
if (leftWorkspace != null)
{
leftWorkspace.EnableDiagnostic();
}
if (rightWorkspace != null)
{
rightWorkspace.EnableDiagnostic();
}
return(diffViewer);
}
private async Task <object> CreateNewDifferenceViewerAsync(
PreviewWorkspace leftWorkspace, PreviewWorkspace rightWorkspace,
IProjectionBuffer originalBuffer, IProjectionBuffer changedBuffer,
double zoomLevel, CancellationToken cancellationToken)
{
cancellationToken.ThrowIfCancellationRequested();
// leftWorkspace can be null if the change is adding a document.
// rightWorkspace can be null if the change is removing a document.
// However both leftWorkspace and rightWorkspace can't be null at the same time.
Contract.ThrowIfTrue((leftWorkspace == null) && (rightWorkspace == null));
var diffBuffer = _differenceBufferService.CreateDifferenceBuffer(
originalBuffer, changedBuffer,
new StringDifferenceOptions(), disableEditing: true);
var diffViewer = _differenceViewerService.CreateDifferenceView(diffBuffer, _previewRoleSet);
diffViewer.Closed += (s, e) =>
{
// Workaround Editor bug. The editor has an issue where they sometimes crash when
// trying to apply changes to projection buffer. So, when the user actually invokes
// a SuggestedAction we may then edit a text buffer, which the editor will then
// try to propagate through the projections we have here over that buffer. To ensure
// that that doesn't happen, we clear out the projections first so that this crash
// won't happen.
originalBuffer.DeleteSpans(0, originalBuffer.CurrentSnapshot.SpanCount);
changedBuffer.DeleteSpans(0, changedBuffer.CurrentSnapshot.SpanCount);
leftWorkspace?.Dispose();
leftWorkspace = null;
rightWorkspace?.Dispose();
rightWorkspace = null;
};
const string DiffOverviewMarginName = "deltadifferenceViewerOverview";
if (leftWorkspace == null)
{
diffViewer.ViewMode = DifferenceViewMode.RightViewOnly;
diffViewer.RightView.ZoomLevel *= zoomLevel;
diffViewer.RightHost.GetTextViewMargin(DiffOverviewMarginName).VisualElement.Visibility = Visibility.Collapsed;
}
else if (rightWorkspace == null)
{
diffViewer.ViewMode = DifferenceViewMode.LeftViewOnly;
diffViewer.LeftView.ZoomLevel *= zoomLevel;
diffViewer.LeftHost.GetTextViewMargin(DiffOverviewMarginName).VisualElement.Visibility = Visibility.Collapsed;
}
else
{
diffViewer.ViewMode = DifferenceViewMode.Inline;
diffViewer.InlineView.ZoomLevel *= zoomLevel;
diffViewer.InlineHost.GetTextViewMargin(DiffOverviewMarginName).VisualElement.Visibility = Visibility.Collapsed;
}
// Disable focus / tab stop for the diff viewer.
diffViewer.RightView.VisualElement.Focusable = false;
diffViewer.LeftView.VisualElement.Focusable = false;
diffViewer.InlineView.VisualElement.Focusable = false;
// This code path must be invoked on UI thread.
AssertIsForeground();
// We use ConfigureAwait(true) to stay on the UI thread.
await diffViewer.SizeToFitAsync(ThreadingContext).ConfigureAwait(true);
leftWorkspace?.EnableDiagnostic();
rightWorkspace?.EnableDiagnostic();
return(new DifferenceViewerPreview(diffViewer));
}
private IWpfDifferenceViewer CreateNewDifferenceViewer(PreviewWorkspace leftWorkspace, PreviewWorkspace rightWorkspace,
IProjectionBuffer originalBuffer, IProjectionBuffer changedBuffer, double zoomLevel)
{
// leftWorkspace can be null if the change is adding a document.
// rightWorkspace can be null if the change is removing a document.
// However both leftWorkspace and rightWorkspace can't be null at the same time.
Contract.ThrowIfTrue((leftWorkspace == null) && (rightWorkspace == null));
var diffBuffer = _differenceBufferService.CreateDifferenceBuffer(
originalBuffer, changedBuffer,
new StringDifferenceOptions(), disableEditing: true);
var diffViewer = _differenceViewerService.CreateDifferenceView(diffBuffer, _previewRoleSet);
diffViewer.Closed += (s, e) =>
{
if (leftWorkspace != null)
{
leftWorkspace.Dispose();
leftWorkspace = null;
}
if (rightWorkspace != null)
{
rightWorkspace.Dispose();
rightWorkspace = null;
}
};
const string DiffOverviewMarginName = "deltadifferenceViewerOverview";
if (leftWorkspace == null)
{
diffViewer.ViewMode = DifferenceViewMode.RightViewOnly;
diffViewer.RightView.ZoomLevel *= zoomLevel;
diffViewer.RightHost.GetTextViewMargin(DiffOverviewMarginName).VisualElement.Visibility = Visibility.Collapsed;
}
else if (rightWorkspace == null)
{
diffViewer.ViewMode = DifferenceViewMode.LeftViewOnly;
diffViewer.LeftView.ZoomLevel *= zoomLevel;
diffViewer.LeftHost.GetTextViewMargin(DiffOverviewMarginName).VisualElement.Visibility = Visibility.Collapsed;
}
else
{
diffViewer.ViewMode = DifferenceViewMode.Inline;
diffViewer.InlineView.ZoomLevel *= zoomLevel;
diffViewer.InlineHost.GetTextViewMargin(DiffOverviewMarginName).VisualElement.Visibility = Visibility.Collapsed;
}
// Disable focus / tab stop for the diff viewer.
diffViewer.RightView.VisualElement.Focusable = false;
diffViewer.LeftView.VisualElement.Focusable = false;
diffViewer.InlineView.VisualElement.Focusable = false;
diffViewer.SizeToFit();
if (leftWorkspace != null)
{
leftWorkspace.EnableDiagnostic();
}
if (rightWorkspace != null)
{
rightWorkspace.EnableDiagnostic();
}
return(diffViewer);
}
