Use new null checking syntax

Author: mnadareski

Hasher/Features/MainFeature.cs

@@ -83,7 +83,7 @@ private static List<HashType> GetHashTypes(List<string> types)
                 foreach (string typeString in types)
                 {
                     HashType? hashType = typeString.GetHashType();
-                    if (hashType != null && !hashTypes.Contains(hashType.Value))
+                    if (hashType is not null && !hashTypes.Contains(hashType.Value))
                         hashTypes.Add(item: hashType.Value);
                 }
             }
@@ -141,7 +141,7 @@ private static void PrintFileHashes(string file, List<HashType> hashTypes, bool
             {
                 // Get all file hashes for flexibility
                 var hashes = HashTool.GetFileHashes(file);
-                if (hashes == null)
+                if (hashes is null)
                 {
                     if (debug) Console.WriteLine($"Hashes for {file} could not be retrieved");
                     return;
@@ -152,7 +152,7 @@ private static void PrintFileHashes(string file, List<HashType> hashTypes, bool
                 foreach (HashType hashType in hashTypes)
                 {
                     // TODO: Make helper to pretty-print hash type names
-                    if (hashes.TryGetValue(hashType, out string? hash) && hash != null)
+                    if (hashes.TryGetValue(hashType, out string? hash) && hash is not null)
                         builder.AppendLine($"{hashType}: {hash}");
                 }
 

Hasher/Program.cs

@@ -15,7 +15,7 @@ public static void Main(string[] args)
             var commandSet = CreateCommands(mainFeature);
 
             // If we have no args, show the help and quit
-            if (args == null || args.Length == 0)
+            if (args is null || args.Length == 0)
             {
                 commandSet.OutputAllHelp();
                 return;

SabreTools.Hashing/HashOperations.cs

@@ -15,7 +15,7 @@ internal static class HashOperations
         public static string? ByteArrayToString(byte[]? bytes)
         {
             // If we get null in, we send null out
-            if (bytes == null)
+            if (bytes is null)
                 return null;
 
             try
@@ -38,7 +38,7 @@ internal static class HashOperations
         public static ulong BytesToUInt64(byte[]? bytes)
         {
             // If we get null in, we send 0 out
-            if (bytes == null)
+            if (bytes is null)
                 return default;
 
             ulong result = 0;

SabreTools.Hashing/HashTool.cs

@@ -31,7 +31,7 @@ public static bool GetStandardHashes(string filename, out long size, out string?
             // Get all file hashes
             HashType[] standardHashTypes = [HashType.CRC32, HashType.MD5, HashType.SHA1];
             var fileHashes = GetFileHashesAndSize(filename, standardHashTypes, out size);
-            if (fileHashes == null)
+            if (fileHashes is null)
                 return false;
 
             // Assign the file hashes and return
@@ -58,7 +58,7 @@ public static bool GetStandardHashes(byte[] array, out long size, out string? cr
             // Get all file hashes
             HashType[] standardHashTypes = [HashType.CRC32, HashType.MD5, HashType.SHA1];
             var fileHashes = GetByteArrayHashesAndSize(array, standardHashTypes, out size);
-            if (fileHashes == null)
+            if (fileHashes is null)
                 return false;
 
             // Assign the file hashes and return
@@ -85,7 +85,7 @@ public static bool GetStandardHashes(Stream stream, out long size, out string? c
             // Get all file hashes
             HashType[] standardHashTypes = [HashType.CRC32, HashType.MD5, HashType.SHA1];
             var fileHashes = GetStreamHashesAndSize(stream, standardHashTypes, out size);
-            if (fileHashes == null)
+            if (fileHashes is null)
                 return false;
 
             // Assign the file hashes and return
@@ -598,7 +598,7 @@ public static bool GetStandardHashes(Stream stream, out long size, out string? c
 
             // Run the hashing
             var hashers = GetStreamHashesInternal(input, hashTypes, leaveOpen, out size);
-            if (hashers == null)
+            if (hashers is null)
                 return null;
 
             // Get the results
@@ -657,7 +657,7 @@ public static bool GetStandardHashes(Stream stream, out long size, out string? c
 
             // Run the hashing
             var hashers = GetStreamHashesInternal(input, hashTypes, leaveOpen, out size);
-            if (hashers == null)
+            if (hashers is null)
                 return null;
 
             // Get the results

SabreTools.Hashing/HashWrapper.cs

@@ -358,7 +358,7 @@ public void Terminate()
         private static string? GetCRCVariableLengthString(Crc cr)
         {
             // Ignore null values
-            if (cr.Hash == null)
+            if (cr.Hash is null)
                 return null;
 
             // Get the total number of characters needed
@@ -375,7 +375,7 @@ public void Terminate()
         private static string? GetSpamSumBase64String(SpamSum.SpamSum ss)
         {
             // Ignore null values
-            if (ss.Hash == null)
+            if (ss.Hash is null)
                 return null;
 
             return System.Text.Encoding.ASCII.GetString(ss.Hash);

SabreTools.Hashing/SpamSum/SpamSum.cs

@@ -54,7 +54,7 @@ protected override void HashCore(byte[] array, int ibStart, int cbSize)
         protected override byte[] HashFinal()
         {
             string? digest = Finalize(0);
-            if (digest == null)
+            if (digest is null)
                 return [];
 
             return Encoding.ASCII.GetBytes(digest.TrimEnd('\0'));