BooleanConverter.cs

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using System.Buffers.Text;
 
namespace System.Text.Json.Serialization.Converters;
 
internal sealed class BooleanConverter : JsonConverter<bool>
{
    public override bool Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
    {
        return reader.GetBoolean();
    }
 
    public override void Write(Utf8JsonWriter writer, bool value, JsonSerializerOptions options)
    {
        writer.WriteBooleanValue(value);
    }
 
    internal override bool ReadAsPropertyNameCore(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
    {
        ReadOnlySpan<byte> span = reader.GetSpan();
        if (Utf8Parser.TryParse(span, out bool value, out int bytesConsumed, '\0') && span.Length == bytesConsumed)
        {
            return value;
        }
        throw ThrowHelper.GetFormatException(DataType.Boolean);
    }
 
    internal override void WriteAsPropertyNameCore(Utf8JsonWriter writer, bool value, JsonSerializerOptions options, bool isWritingExtensionDataProperty)
    {
        writer.WritePropertyName(value);
    }
}