using System.Globalization; using System.Text.Json.Schema; namespace System.Text.Json.Serialization.Converters { internal sealed class DateOnlyConverter : JsonPrimitiveConverter<DateOnly> { public override DateOnly Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options) { if (reader.TokenType != JsonTokenType.String) ThrowHelper.ThrowInvalidOperationException_ExpectedString(reader.TokenType); return ReadCore(ref reader); } internal override DateOnly ReadAsPropertyNameCore(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options) { return ReadCore(ref reader); } private unsafe static DateOnly ReadCore(ref Utf8JsonReader reader) { if (!JsonHelpers.IsInRangeInclusive(reader.ValueLength, 10, 60)) ThrowHelper.ThrowFormatException(DataType.DateOnly); ReadOnlySpan<byte> source; if (!reader.HasValueSequence && !reader.ValueIsEscaped) source = reader.ValueSpan; else { Span<byte> utf8Destination = new Span<byte>(stackalloc byte[60], 60); int length = reader.CopyString(utf8Destination); source = utf8Destination.Slice(0, length); } if (!JsonHelpers.TryParseAsIso(source, out DateOnly value)) ThrowHelper.ThrowFormatException(DataType.DateOnly); return value; } public unsafe override void Write(Utf8JsonWriter writer, DateOnly value, JsonSerializerOptions options) { Span<byte> span = new Span<byte>(stackalloc byte[10], 10); value.TryFormat(span, out int _, "O".AsSpan(), CultureInfo.InvariantCulture); writer.WriteStringValue(span); } internal unsafe override void WriteAsPropertyNameCore(Utf8JsonWriter writer, DateOnly value, JsonSerializerOptions options, bool isWritingExtensionDataProperty) { Span<byte> span = new Span<byte>(stackalloc byte[10], 10); value.TryFormat(span, out int _, "O".AsSpan(), CultureInfo.InvariantCulture); writer.WritePropertyName(span); } internal override JsonSchema GetSchema(JsonNumberHandling _) { return new JsonSchema { Type = JsonSchemaType.String, Format = "date" }; } } }