[GitHub] [arrow] romainfrancois commented on pull request #8650: ARROW-10530: [R] Use Converter API to convert SEXP to Array/ChunkedArray

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romainfrancois commented on pull request #8650:
URL: https://github.com/apache/arrow/pull/8650#issuecomment-726775206


   Thanks @kszucs for the direct help. This is very far from done, but it's a start, and perhaps we can resume the conversation here. 
   
   AFAIK, There is no R equivalent to `PyObject*`, so I'm trying here to mimic that with this: 
   
   ```cpp
   struct RObject {
     RVectorType rtype;
     void* data;
     bool null;
   };
   ```
   
   This will evolve (perhaps into some sort of hierarchy) I'm sure as other types join the implementation (for now this only handles going from an R integer vector (INTSXP) to an `int32` Array. 
   


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