using System.Runtime.InteropServices; namespace System.Text.Json.Serialization.Converters { internal sealed class CharConverter : JsonConverter<char> { public override char Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options) { string string = reader.GetString(); if (string.IsNullOrEmpty(string) || string.Length > 1) throw ThrowHelper.GetInvalidOperationException_ExpectedChar(reader.TokenType); return string[0]; } public override void Write(Utf8JsonWriter writer, char value, JsonSerializerOptions options) { writer.WriteStringValue(MemoryMarshal.CreateSpan(ref value, 1)); } } }