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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
#nullable disable
using System;
using System.ComponentModel.Composition;
using System.Threading;
using Microsoft.CodeAnalysis.Editor;
using Microsoft.CodeAnalysis.Editor.Shared.Extensions;
using Microsoft.CodeAnalysis.Editor.Shared.Utilities;
using Microsoft.CodeAnalysis.Host.Mef;
using Microsoft.CodeAnalysis.Options;
using Microsoft.CodeAnalysis.Shared.Extensions;
using Microsoft.CodeAnalysis.Text;
using Microsoft.VisualStudio.Text;
using Microsoft.VisualStudio.Text.BraceCompletion;
using Microsoft.VisualStudio.Text.Editor;
using Microsoft.VisualStudio.Text.Operations;
using Microsoft.VisualStudio.Utilities;
using static Microsoft.CodeAnalysis.BraceCompletion.AbstractBraceCompletionService;
namespace Microsoft.CodeAnalysis.AutomaticCompletion;
[Export(typeof(IBraceCompletionSessionProvider))]
[ContentType(ContentTypeNames.RoslynContentType)]
[BracePair(CurlyBrace.OpenCharacter, CurlyBrace.CloseCharacter)]
[BracePair(Bracket.OpenCharacter, Bracket.CloseCharacter)]
[BracePair(SingleQuote.OpenCharacter, SingleQuote.CloseCharacter)]
[BracePair(DoubleQuote.OpenCharacter, DoubleQuote.CloseCharacter)]
[BracePair(Parenthesis.OpenCharacter, Parenthesis.CloseCharacter)]
[BracePair(LessAndGreaterThan.OpenCharacter, LessAndGreaterThan.CloseCharacter)]
[method: ImportingConstructor]
[method: Obsolete(MefConstruction.ImportingConstructorMessage, error: true)]
internal partial class BraceCompletionSessionProvider(
IThreadingContext threadingContext,
ITextBufferUndoManagerProvider undoManager,
IEditorOperationsFactoryService editorOperationsFactoryService,
EditorOptionsService editorOptionsService) : IBraceCompletionSessionProvider
{
private readonly IThreadingContext _threadingContext = threadingContext;
private readonly ITextBufferUndoManagerProvider _undoManager = undoManager;
private readonly IEditorOperationsFactoryService _editorOperationsFactoryService = editorOperationsFactoryService;
private readonly EditorOptionsService _editorOptionsService = editorOptionsService;
public bool TryCreateSession(ITextView textView, SnapshotPoint openingPoint, char openingBrace, char closingBrace, out IBraceCompletionSession session)
{
_threadingContext.ThrowIfNotOnUIThread();
var textSnapshot = openingPoint.Snapshot;
var document = textSnapshot.GetOpenDocumentInCurrentContextWithChanges();
if (document != null)
{
var editorSessionFactory = document.GetLanguageService<IBraceCompletionServiceFactory>();
if (editorSessionFactory != null)
{
// Brace completion is (currently) not cancellable.
var cancellationToken = CancellationToken.None;
var parsedDocument = ParsedDocument.CreateSynchronously(document, cancellationToken);
var editorSession = editorSessionFactory.TryGetService(parsedDocument, openingPoint, openingBrace, cancellationToken);
if (editorSession != null)
{
var undoHistory = _undoManager.GetTextBufferUndoManager(textView.TextBuffer).TextBufferUndoHistory;
session = new BraceCompletionSession(
textView, openingPoint.Snapshot.TextBuffer, openingPoint, openingBrace, closingBrace,
undoHistory, _editorOperationsFactoryService, _editorOptionsService,
editorSession, _threadingContext);
return true;
}
}
}
session = null;
return false;
}
}
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