This microservice is a REST API that will generate C++ source code that runs in the ATLAS environment to generate code that will extract columns of data from ATLAS xAOD binary files. The query to extract the data is generated by the func-adl LINQ-like language, and specified to the service useing the ast-language.
This repo was moved over to the ssl-hep github organization. See the repo there.
Sometimes it is useful to generate C++ from the ast-language text. There is a utility in scripts/from_ast_to_zip.py that will do this for you. For example: ```
echo "(call ResultTTree (call Select (call SelectMany (call EventDataset (list 'localds://did_01')) (lambda (list e) (call (attr e 'Jets') ''))) (lambda (list j) (call (attr j 'pt')))) (list 'jet_pt') 'analysis' 'junk.root')" | python ./scripts/from_ast_to_zip.py -z junk.zip
```
This will generate a zip file that contains the C++ source code.