How to use preprocess_file in compiler.py

[zhajio1988]

Currently I'm using a perl script alone to process the systemRDL file with embedded perl, and then using the generated systemRDL file to pass it to the compile_file function, I found that the compiler provides the preprocess_file function, may I ask what to do with this function, I found that it's return value is a class.

[amykyta3]

The RDLCompiler.preprocess_file() method returns a FileInfo object which contains information about the preprocessed source code.
See the API reference here: https://systemrdl-compiler.readthedocs.io/en/stable/api/compiler.html#systemrdl.compiler.FileInfo

From that object, you can extract the preprocessed text via: FileInfo.preprocessed_text