File: CodeFixes\Suppression\AbstractSuppressionCodeFixProvider.FixAllProvider.cs
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Project: src\src\Features\Core\Portable\Microsoft.CodeAnalysis.Features.csproj (Microsoft.CodeAnalysis.Features)
// 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.Collections.Generic;
using System.Collections.Immutable;
using System.Threading.Tasks;
using Microsoft.CodeAnalysis.CodeActions;
using Roslyn.Utilities;
 
namespace Microsoft.CodeAnalysis.CodeFixes.Suppression;
 
internal abstract partial class AbstractSuppressionCodeFixProvider : IConfigurationFixProvider
{
    private sealed class SuppressionFixAllProvider : FixAllProvider
    {
        public static readonly SuppressionFixAllProvider Instance = new();
 
        private SuppressionFixAllProvider()
        {
        }
 
        public override IEnumerable<FixAllScope> GetSupportedFixAllScopes()
            => ImmutableArray.Create(FixAllScope.Document, FixAllScope.Project,
                FixAllScope.Solution, FixAllScope.ContainingMember, FixAllScope.ContainingType);
 
        public override async Task<CodeAction> GetFixAsync(FixAllContext fixAllContext)
        {
            // currently there's no FixAll support for local suppression, just bail out
            if (NestedSuppressionCodeAction.IsEquivalenceKeyForLocalSuppression(fixAllContext.CodeActionEquivalenceKey))
            {
                return null;
            }
 
            var suppressionFixer = (AbstractSuppressionCodeFixProvider)((WrapperCodeFixProvider)fixAllContext.CodeFixProvider).SuppressionFixProvider;
 
            if (NestedSuppressionCodeAction.IsEquivalenceKeyForGlobalSuppression(fixAllContext.CodeActionEquivalenceKey))
            {
                // For global suppressions, we defer to the global suppression system to handle directly.
                var title = fixAllContext.CodeActionEquivalenceKey;
                return fixAllContext.Document != null
                    ? GlobalSuppressMessageFixAllCodeAction.Create(
                        title, suppressionFixer, fixAllContext.Document,
                        await fixAllContext.GetDocumentDiagnosticsToFixAsync().ConfigureAwait(false))
                    : GlobalSuppressMessageFixAllCodeAction.Create(
                        title, suppressionFixer, fixAllContext.Project,
                        await fixAllContext.GetProjectDiagnosticsToFixAsync().ConfigureAwait(false));
            }
 
            if (NestedSuppressionCodeAction.IsEquivalenceKeyForPragmaWarning(fixAllContext.CodeActionEquivalenceKey))
            {
                var batchFixer = new PragmaWarningBatchFixAllProvider(suppressionFixer);
                return await batchFixer.GetFixAsync(fixAllContext).ConfigureAwait(false);
            }
 
            if (NestedSuppressionCodeAction.IsEquivalenceKeyForRemoveSuppression(fixAllContext.CodeActionEquivalenceKey))
            {
                var batchFixer = RemoveSuppressionCodeAction.GetBatchFixer(suppressionFixer);
                return await batchFixer.GetFixAsync(fixAllContext).ConfigureAwait(false);
            }
 
            throw ExceptionUtilities.Unreachable();
        }
    }
}