From 775cb7159e3a354ecfe959602326ec897a81aabf Mon Sep 17 00:00:00 2001
From: David Roth <david.roth@fusonic.net>
Date: Wed, 13 Nov 2024 09:41:49 +0100
Subject: [PATCH] Change IComparer interface argument so that it accepts nulls.

---
 Semver/Comparers/ISemVersionComparer.cs             | 2 +-
 Semver/Comparers/PrecedenceComparer.cs              | 4 ++--
 Semver/Comparers/SortOrderComparer.cs               | 4 ++--
 Semver/Comparers/UnbrokenSemVersionRangeComparer.cs | 2 +-
 4 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/Semver/Comparers/ISemVersionComparer.cs b/Semver/Comparers/ISemVersionComparer.cs
index 84c1a0f..18c9529 100644
--- a/Semver/Comparers/ISemVersionComparer.cs
+++ b/Semver/Comparers/ISemVersionComparer.cs
@@ -12,6 +12,6 @@ namespace Semver.Comparers;
 /// <see cref="SemVersion.SortOrderComparer"/> so that separate properties aren't needed for the
 /// <see cref="IEqualityComparer{T}"/> and <see cref="IComparer{T}"/> of <see cref="SemVersion"/>.
 /// </remarks>
-public interface ISemVersionComparer : IEqualityComparer<SemVersion>, IComparer<SemVersion>, IComparer
+public interface ISemVersionComparer : IEqualityComparer<SemVersion>, IComparer<SemVersion?>, IComparer
 {
 }
diff --git a/Semver/Comparers/PrecedenceComparer.cs b/Semver/Comparers/PrecedenceComparer.cs
index 2071451..ef7ccf2 100644
--- a/Semver/Comparers/PrecedenceComparer.cs
+++ b/Semver/Comparers/PrecedenceComparer.cs
@@ -1,9 +1,9 @@
-using System;
+using System;
 using System.Collections.Generic;
 
 namespace Semver.Comparers;
 
-internal sealed class PrecedenceComparer : Comparer<SemVersion>, ISemVersionComparer
+internal sealed class PrecedenceComparer : Comparer<SemVersion?>, ISemVersionComparer
 {
     #region Singleton
     public static readonly ISemVersionComparer Instance = new PrecedenceComparer();
diff --git a/Semver/Comparers/SortOrderComparer.cs b/Semver/Comparers/SortOrderComparer.cs
index 905f505..ac9b49e 100644
--- a/Semver/Comparers/SortOrderComparer.cs
+++ b/Semver/Comparers/SortOrderComparer.cs
@@ -1,10 +1,10 @@
-using System;
+using System;
 using System.Collections.Generic;
 using Semver.Utility;
 
 namespace Semver.Comparers;
 
-internal sealed class SortOrderComparer : Comparer<SemVersion>, ISemVersionComparer
+internal sealed class SortOrderComparer : Comparer<SemVersion?>, ISemVersionComparer
 {
     #region Singleton
     public static readonly ISemVersionComparer Instance = new SortOrderComparer();
diff --git a/Semver/Comparers/UnbrokenSemVersionRangeComparer.cs b/Semver/Comparers/UnbrokenSemVersionRangeComparer.cs
index 0b3f016..e4fe836 100644
--- a/Semver/Comparers/UnbrokenSemVersionRangeComparer.cs
+++ b/Semver/Comparers/UnbrokenSemVersionRangeComparer.cs
@@ -13,7 +13,7 @@ namespace Semver.Comparers;
 /// the ranges they contain will be removed. Note that the <see cref="SemVersionRange"/> API
 /// will never expose this order exactly because contained ranges will not be included in the
 /// final <see cref="SemVersionRange"/>.</remarks>
-internal sealed class UnbrokenSemVersionRangeComparer : Comparer<UnbrokenSemVersionRange>
+internal sealed class UnbrokenSemVersionRangeComparer : Comparer<UnbrokenSemVersionRange?>
 {
     #region Singleton
     public static readonly UnbrokenSemVersionRangeComparer Instance = new();