using System.Diagnostics.CodeAnalysis; namespace System.Text.Json.Serialization.Converters { [System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed and might need runtime code generation. Use System.Text.Json source generation for native AOT applications.")] internal sealed class EnumConverterFactory : JsonConverterFactory { public override bool CanConvert(Type type) { return type.IsEnum; } public override JsonConverter CreateConverter(Type type, JsonSerializerOptions options) { return Create(type, EnumConverterOptions.AllowNumbers, null, options); } internal static JsonConverter Create(Type enumType, EnumConverterOptions converterOptions, JsonNamingPolicy namingPolicy, JsonSerializerOptions options) { return (JsonConverter)Activator.CreateInstance(GetEnumConverterType(enumType), converterOptions, namingPolicy, options); } [System.Diagnostics.CodeAnalysis.UnconditionalSuppressMessage("ReflectionAnalysis", "IL2070:UnrecognizedReflectionPattern", Justification = "'EnumConverter<T> where T : struct' implies 'T : new()', so the trimmer is warning calling MakeGenericType here because enumType's constructors are not annotated. But EnumConverter doesn't call new T(), so this is safe.")] [return: System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicConstructors)] private static Type GetEnumConverterType(Type enumType) { return typeof(EnumConverter<>).MakeGenericType(enumType); } } }