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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(ReorderTypeParameterConstraintsCodeFixProvider))]
[Shared]
public class ReorderTypeParameterConstraintsCodeFixProvider : BaseCodeFixProvider
{
public sealed override ImmutableArray<string> FixableDiagnosticIds
{
get { return ImmutableArray.Create(DiagnosticIdentifiers.ReorderTypeParameterConstraints); }
}
public sealed override async Task RegisterCodeFixesAsync(CodeFixContext context)
{
SyntaxNode root = await context.GetSyntaxRootAsync().ConfigureAwait(false);
if (!TryFindFirstAncestorOrSelf(root, context.Span, out SyntaxNode node, predicate: f => f is MemberDeclarationSyntax || f.IsKind(SyntaxKind.LocalFunctionStatement)))
return;
foreach (Diagnostic diagnostic in context.Diagnostics)
{
CodeAction codeAction = CodeAction.Create(
"Reorder constraints",
cancellationToken => ReorderTypeParameterConstraintsRefactoring.RefactorAsync(context.Document, node, cancellationToken),
GetEquivalenceKey(diagnostic));
context.RegisterCodeFix(codeAction, diagnostic);
}
}
}
}