Add net6.0 platform and set IsTrimmable to true for it

Author: odinserj

src/Cronos/CronExpression.cs

@@ -147,7 +147,11 @@ public static CronExpression Parse(string expression)
         /// </summary>
         public static CronExpression Parse(string expression, CronFormat format)
         {
+#if NET6_0_OR_GREATER
+            ArgumentNullException.ThrowIfNull(expression);
+#else
             if (expression == null) throw new ArgumentNullException(nameof(expression));
+#endif
 
             return CronParser.Parse(expression, format);
         }
@@ -169,7 +173,11 @@ public static bool TryParse(string expression, out CronExpression cronExpression
         /// </summary>
         public static bool TryParse(string expression, CronFormat format, out CronExpression cronExpression)
         {
+#if NET6_0_OR_GREATER
+            ArgumentNullException.ThrowIfNull(expression);
+#else
             if (expression == null) throw new ArgumentNullException(nameof(expression));
+#endif
 
             try
             {

src/Cronos/Cronos.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>netstandard1.0;netstandard2.0;net45;net40</TargetFrameworks>
+    <TargetFrameworks>net40;net45;netstandard1.0;netstandard2.0;net6.0</TargetFrameworks>
     <AllowUnsafeBlocks>True</AllowUnsafeBlocks>
   </PropertyGroup>
 

src/Cronos/packages.lock.json

@@ -416,6 +416,46 @@
         "resolved": "8.0.0",
         "contentHash": "dk9JPxTCIevS75HyEQ0E4OVAFhB2N+V9ShCXf8Q6FkUQZDkgLI12y679Nym1YqsiSysuQskT7Z+6nUf3yab6Vw=="
       }
+    },
+    "net6.0": {
+      "Microsoft.CodeAnalysis.NetAnalyzers": {
+        "type": "Direct",
+        "requested": "[9.0.0, )",
+        "resolved": "9.0.0",
+        "contentHash": "JajbvkrBgtdRghavIjcJuNHMOja4lqBmEezbhZyqWPYh2cpLhT5mPpfC7NQVDO4IehWQum9t/nwF4v+qQGtYWg=="
+      },
+      "Microsoft.NET.ILLink.Analyzers": {
+        "type": "Direct",
+        "requested": "[7.0.100-1.23211.1, )",
+        "resolved": "7.0.100-1.23211.1",
+        "contentHash": "0GvbEgDGcUQA9KuWcQU1WwYHXt1tBzNr1Nls/M57rM7NA/AndFwCaCEoJpJkmxRY7xLlPDBnmGp8h5+FNqUngg=="
+      },
+      "Microsoft.NET.ILLink.Tasks": {
+        "type": "Direct",
+        "requested": "[7.0.100-1.23211.1, )",
+        "resolved": "7.0.100-1.23211.1",
+        "contentHash": "tvG8XZYLjT0o3WicCyKBZysVWo1jC9HdCFmNRmddx3WbAz0UCsd0qKZqpiEo99VLA8Re+FzWK51OcRldQPbt2Q=="
+      },
+      "Microsoft.SourceLink.GitHub": {
+        "type": "Direct",
+        "requested": "[8.0.0, )",
+        "resolved": "8.0.0",
+        "contentHash": "G5q7OqtwIyGTkeIOAc3u2ZuV/kicQaec5EaRnc0pIeSnh9LUjj+PYQrJYBURvDt7twGl2PKA7nSN0kz1Zw5bnQ==",
+        "dependencies": {
+          "Microsoft.Build.Tasks.Git": "8.0.0",
+          "Microsoft.SourceLink.Common": "8.0.0"
+        }
+      },
+      "Microsoft.Build.Tasks.Git": {
+        "type": "Transitive",
+        "resolved": "8.0.0",
+        "contentHash": "bZKfSIKJRXLTuSzLudMFte/8CempWjVamNUR5eHJizsy+iuOuO/k2gnh7W0dHJmYY0tBf+gUErfluCv5mySAOQ=="
+      },
+      "Microsoft.SourceLink.Common": {
+        "type": "Transitive",
+        "resolved": "8.0.0",
+        "contentHash": "dk9JPxTCIevS75HyEQ0E4OVAFhB2N+V9ShCXf8Q6FkUQZDkgLI12y679Nym1YqsiSysuQskT7Z+6nUf3yab6Vw=="
+      }
     }
   }
 }

src/Directory.build.props

@@ -31,4 +31,10 @@
         <AnalysisMode>All</AnalysisMode>
         <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
     </PropertyGroup>
+
+    <PropertyGroup Condition="$([MSBuild]::IsTargetFrameworkCompatible('$(TargetFramework)', 'net6.0'))">
+        <IsTrimmable>true</IsTrimmable>
+        <EnableTrimAnalyzer>true</EnableTrimAnalyzer>
+        <EnableSingleFileAnalyzer>true</EnableSingleFileAnalyzer>
+    </PropertyGroup>
 </Project>