Source Span Information for Deserialized Object

[nex3]

Is your feature request related to a problem? Please describe.

I'm deserializing a large and complex configuration file into an object using YamlDotNet's declarative deserialization. Sometimes I need to indicate errors associated with part of this configuration. Currently, I have no way of knowing where in the YAML source file a given part of the configuration object came from.

Describe the solution you'd like

Some sort of YamlSourceSpan object that I could include as a property on a deserialized object would be ideal, and/or a generic WithSpan<T> container.

Describe alternatives you've considered

I think I could probably do this by implementing a manual deserializer, but I feel like I'd be reinventing the wheel by doing so.

[EdwardCooke]

What you could do is create a new onjectnodedeserializer and inject that into the deserializerbuilder. That will give you access to the object being deserialized, the property and the current position in the file which I believe is in the parser. Pretty sure we exposed there lying text reader and writer a while back on the actual parser class. Then you would only copy a small chunk of code with some modifications instead of redoing the entire thing, which would be a horrible time for sure.

[EdwardCooke]

https://github.com/aaubry/YamlDotNet/blob/master/YamlDotNet/Serialization/NodeDeserializers/ObjectNodeDeserializer.cs