src/EditorFeatures/Core/SmartIndent/SmartIndent.cs - main - githubmirror/roslyn

src/EditorFeatures/Core/SmartIndent/SmartIndent.cs
51 строка2 KB
Cyrus Najmabadi
Make sealed
26 мар 2025, 22:21
26 мар 2025, 22:21d99b771
// 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.

using System;
using System.Threading;
using Microsoft.CodeAnalysis.Editor.Shared.Extensions;
using Microsoft.CodeAnalysis.Indentation;
using Microsoft.CodeAnalysis.Internal.Log;
using Microsoft.CodeAnalysis.Options;
using Microsoft.CodeAnalysis.Shared.Extensions;
using Microsoft.CodeAnalysis.Text;
using Microsoft.VisualStudio.Text;
using Microsoft.VisualStudio.Text.Editor;

namespace Microsoft.CodeAnalysis.Editor.Implementation.SmartIndent;

internal sealed partial class SmartIndent(ITextView textView, EditorOptionsService editorOptionsService) : ISmartIndent
{
    private readonly ITextView _textView = textView;
    private readonly EditorOptionsService _editorOptionsService = editorOptionsService;

    public int? GetDesiredIndentation(ITextSnapshotLine line)
        => GetDesiredIndentation(line, CancellationToken.None);

    public void Dispose()
    {
    }

    private int? GetDesiredIndentation(ITextSnapshotLine line, CancellationToken cancellationToken)
    {
        if (line == null)
            throw new ArgumentNullException(nameof(line));

        using (Logger.LogBlock(FunctionId.SmartIndentation_Start, cancellationToken))
        {
            var document = line.Snapshot.GetOpenDocumentInCurrentContextWithChanges();
            if (document == null)
                return null;

            var newService = document.GetLanguageService<IIndentationService>();
            if (newService == null)
                return null;

            var indentationOptions = line.Snapshot.TextBuffer.GetIndentationOptions(_editorOptionsService, document.Project.GetFallbackAnalyzerOptions(), document.Project.Services, explicitFormat: false);
            var parsedDocument = ParsedDocument.CreateSynchronously(document, cancellationToken);
            var result = newService.GetIndentation(parsedDocument, line.LineNumber, indentationOptions, cancellationToken);
            return result.GetIndentation(_textView, line);
        }
    }
}