using System.Buffers.Text; namespace System.Text.Json.Serialization.Converters { internal sealed class TimeOnlyConverter : JsonConverter<TimeOnly> { public unsafe override TimeOnly Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options) { if (reader.TokenType != JsonTokenType.String) ThrowHelper.ThrowInvalidOperationException_ExpectedString(reader.TokenType); if (!JsonHelpers.IsInRangeInclusive(reader.ValueLength, 8, 96)) ThrowHelper.ThrowFormatException(DataType.TimeOnly); ReadOnlySpan<byte> readOnlySpan; if (!reader.HasValueSequence && !reader.ValueIsEscaped) readOnlySpan = reader.ValueSpan; else { Span<byte> span = new Span<byte>(stackalloc byte[96], 96); Span<byte> utf8Destination = span; int length = reader.CopyString(utf8Destination); readOnlySpan = utf8Destination.Slice(0, length); } byte value = readOnlySpan[0]; int num = readOnlySpan.IndexOfAny<byte>(46, 58); if (!JsonHelpers.IsDigit(value) || num < 0 || readOnlySpan[num] == 46) ThrowHelper.ThrowFormatException(DataType.TimeOnly); if (!Utf8Parser.TryParse(readOnlySpan, out TimeSpan value2, out int bytesConsumed, 'c') || readOnlySpan.Length != bytesConsumed) ThrowHelper.ThrowFormatException(DataType.TimeOnly); return TimeOnly.FromTimeSpan(value2); } public unsafe override void Write(Utf8JsonWriter writer, TimeOnly value, JsonSerializerOptions options) { Span<byte> span = new Span<byte>(stackalloc byte[16], 16); Span<byte> destination = span; int bytesWritten; bool flag = Utf8Formatter.TryFormat(value.ToTimeSpan(), destination, out bytesWritten, 'c'); writer.WriteStringValue(destination.Slice(0, bytesWritten)); } } }