Enable nullable and improve source generators

Author: pwelter34

src/FluentCommand.Caching/DistributedDataCache.cs

@@ -41,7 +41,7 @@ public DistributedDataCache(ILogger<DistributedDataCache> logger, IDistributedCa
     /// <para>Value is the cache entry that is identified by key</para>
     /// </returns>
     /// <exception cref="System.ArgumentException">key cannot be null or empty. - key</exception>
-    public (bool Success, T Value) Get<T>(string key)
+    public (bool Success, T? Value) Get<T>(string key)
     {
         if (string.IsNullOrEmpty(key))
             throw new ArgumentException($"'{nameof(key)}' cannot be null or empty.", nameof(key));
@@ -72,7 +72,7 @@ public DistributedDataCache(ILogger<DistributedDataCache> logger, IDistributedCa
     /// <para>Value is the cache entry that is identified by key</para>
     /// </returns>
     /// <exception cref="System.ArgumentException">'key' cannot be null or empty. - key</exception>
-    public async Task<(bool Success, T Value)> GetAsync<T>(string key, CancellationToken cancellationToken = default)
+    public async Task<(bool Success, T? Value)> GetAsync<T>(string key, CancellationToken cancellationToken = default)
     {
         if (string.IsNullOrEmpty(key))
             throw new ArgumentException($"'{nameof(key)}' cannot be null or empty.", nameof(key));

src/FluentCommand.Caching/FluentCommand.Caching.csproj

@@ -1,6 +1,8 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <TargetFrameworks>netstandard2.0;net8.0;net9.0;net10.0</TargetFrameworks>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
     <Description>Fluent Wrapper for DbCommand with distributed caching support using Microsoft.Extensions.Caching and MessagePack serialization</Description>
   </PropertyGroup>
   <ItemGroup>

src/FluentCommand.Caching/MessagePackCacheSerializer.cs

@@ -15,7 +15,7 @@ public class MessagePackCacheSerializer : IDistributedCacheSerializer
     /// Initializes a new instance of the <see cref="MessagePackCacheSerializer"/> class.
     /// </summary>
     /// <param name="messagePackSerializerOptions">The message pack serializer options.</param>
-    public MessagePackCacheSerializer(MessagePackSerializerOptions messagePackSerializerOptions = null)
+    public MessagePackCacheSerializer(MessagePackSerializerOptions? messagePackSerializerOptions = null)
     {
         _messagePackSerializerOptions = messagePackSerializerOptions
             ?? ContractlessStandardResolver.Options.WithCompression(MessagePackCompression.Lz4BlockArray);

src/FluentCommand.Csv/CsvCommandExtensions.cs

@@ -134,7 +134,7 @@ await dataCommand.ReadAsync(
     private static void WriteData(TextWriter writer, IDataReader reader)
     {
         var wroteHeader = false;
-        Type[] rowTypes = null;
+        Type[]? rowTypes = null;
 
         while (reader.Read())
         {
@@ -158,7 +158,7 @@ private static void WriteData(TextWriter writer, IDataReader reader)
     private static async Task WriteDataAsync(TextWriter writer, DbDataReader reader, CancellationToken cancellationToken = default)
     {
         var wroteHeader = false;
-        Type[] rowTypes = null;
+        Type[]? rowTypes = null;
 
         while (await reader.ReadAsync(cancellationToken))
         {
@@ -367,7 +367,7 @@ private static void WriteValue(TextWriter writer, IDataReader reader, int index,
         WriteValue(writer, formattedValue);
     }
 
-    private static void WriteValue(TextWriter writer, string value)
+    private static void WriteValue(TextWriter writer, string? value)
     {
         if (string.IsNullOrEmpty(value))
             return;

src/FluentCommand.Csv/FluentCommand.Csv.csproj

@@ -2,6 +2,8 @@
   <PropertyGroup>
     <TargetFrameworks>net8.0;net9.0;net10.0</TargetFrameworks>
     <RootNamespace>FluentCommand</RootNamespace>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
     <Description>Fluent Wrapper for DbCommand with CSV export support for query results</Description>
   </PropertyGroup>
   <ItemGroup>