Add System.Half support for .NET 5.0

README.md

@@ -183,7 +183,7 @@ These types can serialize by default:
 * Primitives (`int`, `string`, etc...), `Enum`s, `Nullable<>`, `Lazy<>`
 * `TimeSpan`,  `DateTime`, `DateTimeOffset`
 * `Guid`, `Uri`, `Version`, `StringBuilder`
-* `BigInteger`, `Complex`
+* `BigInteger`, `Complex`, `Half`
 * `Array[]`, `Array[,]`, `Array[,,]`, `Array[,,,]`, `ArraySegment<>`, `BitArray`
 * `KeyValuePair<,>`, `Tuple<,...>`, `ValueTuple<,...>`
 * `ArrayList`, `Hashtable`

src/MessagePack.UnityClient/Assets/Scripts/MessagePack/Formatters/StandardClassLibraryFormatter.cs

@@ -635,4 +635,28 @@ public T Deserialize(ref MessagePackReader reader, MessagePackSerializerOptions
             return (T)Type.GetType(reader.ReadString(), throwOnError: true);
         }
     }
+
+#if NET5_0
+
+    public sealed class HalfFormatter : IMessagePackFormatter<Half>
+    {
+        public static readonly IMessagePackFormatter<Half> Instance = new HalfFormatter();
+
+        private HalfFormatter()
+        {
+        }
+
+        public void Serialize(ref MessagePackWriter writer, Half value, MessagePackSerializerOptions options)
+        {
+            writer.Write((float)value);
+        }
+
+        public Half Deserialize(ref MessagePackReader reader, MessagePackSerializerOptions options)
+        {
+            return (Half)reader.ReadSingle();
+        }
+    }
+
+#endif
+
 }

src/MessagePack.UnityClient/Assets/Scripts/MessagePack/Resolvers/BuiltinResolver.cs

@@ -151,6 +151,10 @@ internal static class BuiltinResolverGetFormatterHelper
             { typeof(System.Numerics.BigInteger?), new StaticNullableFormatter<System.Numerics.BigInteger>(BigIntegerFormatter.Instance) },
             { typeof(System.Numerics.Complex), ComplexFormatter.Instance },
             { typeof(System.Numerics.Complex?), new StaticNullableFormatter<System.Numerics.Complex>(ComplexFormatter.Instance) },
+
+#if NET5_0
+            { typeof(System.Half), HalfFormatter.Instance },
+#endif
         };
 
         internal static object GetFormatter(Type t)

src/MessagePack.UnityClient/Assets/Scripts/Tests/ShareTests/FormatterTest.cs

@@ -312,5 +312,16 @@ public void UriTest_Relative()
             var relative = new Uri("/me/", UriKind.Relative);
             this.Convert(relative).ToString().Is("/me/");
         }
+
+#if NET5_0
+
+        [Fact]
+        public void HalfTest()
+        {
+            Convert((Half)1.34f).Is((Half)1.34f);
+            Convert((Half)0).Is((Half)0);
+        }
+
+#endif
     }
 }

src/MessagePack/MessagePack.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.0;netcoreapp2.1</TargetFrameworks>
+    <TargetFrameworks>netstandard2.0;netcoreapp2.1;net5.0</TargetFrameworks>
     <NoWarn>$(NoWarn);CS0649</NoWarn>
     <AllowUnsafeBlocks>True</AllowUnsafeBlocks>
     <DefineConstants Condition=" '$(TargetFramework)' == 'netcoreapp2.1' ">$(DefineConstants);SPAN_BUILTIN</DefineConstants>

tests/MessagePack.Tests/MessagePack.Tests.csproj

@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFrameworks>net472;netcoreapp2.1</TargetFrameworks>
+    <TargetFrameworks>net472;netcoreapp2.1;net5.0</TargetFrameworks>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
     <LangVersion>8.0</LangVersion>
     <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>