public override TMessage?Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
{
var message = new TMessage();
JsonConverterHelper.PopulateMap(ref reader, options, message, message.Descriptor.Fields[Struct.FieldsFieldNumber]);
return(message);
}
public override TMessage Read(
ref Utf8JsonReader reader,
Type typeToConvert,
JsonSerializerOptions options)
{
var message = new TMessage();
if (reader.TokenType != JsonTokenType.StartObject)
{
throw new InvalidOperationException($"Unexpected JSON token: {reader.TokenType}");
}
while (reader.Read())
{
switch (reader.TokenType)
{
case JsonTokenType.EndObject:
return(message);
case JsonTokenType.PropertyName:
if (_jsonFieldMap.TryGetValue(reader.GetString() !, out var fieldDescriptor))
{
if (fieldDescriptor.ContainingOneof != null)
{
if (fieldDescriptor.ContainingOneof.Accessor.GetCaseFieldDescriptor(message) != null)
{
throw new InvalidOperationException($"Multiple values specified for oneof {fieldDescriptor.ContainingOneof.Name}");
}
}
if (fieldDescriptor.IsMap)
{
JsonConverterHelper.PopulateMap(ref reader, options, message, fieldDescriptor);
}
else if (fieldDescriptor.IsRepeated)
{
JsonConverterHelper.PopulateList(ref reader, options, message, fieldDescriptor);
}
else
{
var fieldType = JsonConverterHelper.GetFieldType(fieldDescriptor);
var propertyValue = JsonSerializer.Deserialize(ref reader, fieldType, options);
fieldDescriptor.Accessor.SetValue(message, propertyValue);
}
}
else
{
reader.Skip();
}
break;