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// Copyright (c) .NET Foundation and contributors. All rights reserved.
// Licensed under the MIT license. See LICENSE file in the project root for full license information.
using System.Collections.Generic;
using System.Linq;
using ILLink.Shared;
using Mono.Cecil;
namespace Mono.Linker.Steps
{
public class CheckSuppressionsDispatcher : SubStepsDispatcher
{
public CheckSuppressionsDispatcher() : base(new List<ISubStep> { new CheckSuppressionsStep() })
{
}
public override void Process(LinkContext context)
{
base.Process(context);
var redundantSuppressions = context.Suppressions.GetUnusedSuppressions();
// Suppressions targeting warning caused by anything but the ILLink tool should not be reported.
// Suppressions targeting RedundantSuppression warning should not be reported.
redundantSuppressions = redundantSuppressions
.Where(suppression => ((DiagnosticId)suppression.SuppressMessageInfo.Id).GetDiagnosticCategory() == DiagnosticCategory.Trimming)
.Where(suppression => ((DiagnosticId)suppression.SuppressMessageInfo.Id) != DiagnosticId.RedundantSuppression)
.Where(suppression => ProviderIsMarked(suppression.Provider));
foreach (var suppression in redundantSuppressions)
{
var source = context.Suppressions.GetSuppressionOrigin(suppression);
context.LogWarning(new MessageOrigin(source), DiagnosticId.RedundantSuppression, $"IL{suppression.SuppressMessageInfo.Id:0000}");
}
bool ProviderIsMarked(ICustomAttributeProvider provider)
{
if (provider is PropertyDefinition property)
{
return (property.GetMethod != null && context.Annotations.IsMarked(property.GetMethod))
|| (property.SetMethod != null && context.Annotations.IsMarked(property.SetMethod));
}
if (provider is EventDefinition @event)
{
return (@event.AddMethod != null && context.Annotations.IsMarked(@event.AddMethod))
|| (@event.InvokeMethod != null && context.Annotations.IsMarked(@event.InvokeMethod))
|| (@event.RemoveMethod != null && context.Annotations.IsMarked(@event.RemoveMethod));
}
return context.Annotations.IsMarked(provider);
}
}
}
}
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