StringConverter.cs

Go to the documentation of this file.

namespace System.Text.Json.Serialization.Converters;
 
internal sealed class StringConverter : JsonConverter<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 (options.DictionaryKeyPolicy != null && !isWritingExtensionDataProperty)
        {
            value = options.DictionaryKeyPolicy.ConvertName(value);
            if (value == null)
            {
                ThrowHelper.ThrowInvalidOperationException_NamingPolicyReturnNull(options.DictionaryKeyPolicy);
            }
        }
        writer.WritePropertyName(value);
    }
}