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DiagnosticDescriptorFixComparer.cs
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DiagnosticDescriptorFixComparer.cs
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// Copyright (c) .NET Foundation and Contributors. Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
using System.Collections.Generic;
using System.Collections.Immutable;
using System.Linq;
using Microsoft.CodeAnalysis;
using Microsoft.CodeAnalysis.CodeFixes;
namespace Roslynator.CodeFixes;
internal class DiagnosticDescriptorFixComparer : IComparer<DiagnosticDescriptor>
{
public DiagnosticDescriptorFixComparer(
Dictionary<DiagnosticDescriptor, int> diagnosticCountByDescriptor,
Dictionary<string, ImmutableArray<CodeFixProvider>> fixersById)
{
DiagnosticCountByDescriptor = diagnosticCountByDescriptor;
FixersById = fixersById;
}
private Dictionary<DiagnosticDescriptor, int> DiagnosticCountByDescriptor { get; }
private Dictionary<string, ImmutableArray<CodeFixProvider>> FixersById { get; }
public int Compare(DiagnosticDescriptor x, DiagnosticDescriptor y)
{
if (object.ReferenceEquals(x, y))
return 0;
if (x is null)
return -1;
if (y is null)
return 1;
if (HasFixAll(x))
{
if (!HasFixAll(y))
return -1;
}
else if (HasFixAll(y))
{
return 1;
}
return DiagnosticCountByDescriptor[y].CompareTo(DiagnosticCountByDescriptor[x]);
}
private bool HasFixAll(DiagnosticDescriptor descriptor)
{
return FixersById[descriptor.Id].Any(f => f.HasFixAllProvider(FixAllScope.Project));
}
}