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// Copyright (c) Josef Pihrt. All rights reserved. Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
using System.Collections.Immutable;
using System.Composition;
using System.Threading.Tasks;
using Microsoft.CodeAnalysis;
using Microsoft.CodeAnalysis.CodeActions;
using Microsoft.CodeAnalysis.CodeFixes;
using Microsoft.CodeAnalysis.CSharp;
using Microsoft.CodeAnalysis.CSharp.Syntax;
using Roslynator.CodeFixes;
using Roslynator.CSharp.Refactorings;
namespace Roslynator.CSharp.CodeFixes
{
[ExportCodeFixProvider(LanguageNames.CSharp, Name = nameof(EndRegionDirectiveTriviaCodeFixProvider))]
[Shared]
public class EndRegionDirectiveTriviaCodeFixProvider : BaseCodeFixProvider
{
public sealed override ImmutableArray<string> FixableDiagnosticIds
{
get { return ImmutableArray.Create(DiagnosticIdentifiers.AddOrRemoveRegionName); }
}
public sealed override async Task RegisterCodeFixesAsync(CodeFixContext context)
{
SyntaxNode root = await context.GetSyntaxRootAsync().ConfigureAwait(false);
if (!TryFindFirstAncestorOrSelf(root, context.Span, out EndRegionDirectiveTriviaSyntax endRegionDirective, findInsideTrivia: true))
return;
RegionDirectiveTriviaSyntax regionDirective = endRegionDirective.GetRegionDirective();
SyntaxTrivia trivia = regionDirective.GetPreprocessingMessageTrivia();
CodeAction codeAction = CodeAction.Create(
(trivia.IsKind(SyntaxKind.PreprocessingMessageTrivia))
? "Add region name to #endregion"
: "Remove region name from #endregion",
cancellationToken => AddOrRemoveRegionNameRefactoring.RefactorAsync(context.Document, endRegionDirective, trivia, cancellationToken),
GetEquivalenceKey(DiagnosticIdentifiers.AddOrRemoveRegionName));
context.RegisterCodeFix(codeAction, context.Diagnostics);
}
}
}