namespace System.Text.Json.Serialization.Converters { internal sealed class StringConverter : JsonPrimitiveConverter<string> { public override string Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options) { return reader.GetString(); } public override void Write(Utf8JsonWriter writer, string value, JsonSerializerOptions options) { if (value == null) writer.WriteNullValue(); else writer.WriteStringValue(value.AsSpan()); } internal override string ReadAsPropertyNameCore(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options) { return reader.GetString(); } internal override void WriteAsPropertyNameCore(Utf8JsonWriter writer, string value, JsonSerializerOptions options, bool isWritingExtensionDataProperty) { if (value == null) ThrowHelper.ThrowArgumentNullException("value"); if (options.DictionaryKeyPolicy != null && !isWritingExtensionDataProperty) { value = options.DictionaryKeyPolicy.ConvertName(value); if (value == null) ThrowHelper.ThrowInvalidOperationException_NamingPolicyReturnNull(options.DictionaryKeyPolicy); } writer.WritePropertyName(value); } } }