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from mypy.stubgen import (
    generate_stubs,
    parse_options,
)

"""
This allows us to generate stubs for the modules in gem5. The output will be
a "typings" directory which can be used by Pylance (Python IntelliSense) to
infer typings in Visual Studio Code.

Note: A "typings" directory in the root of the workspace is the default
location for Pylance to look for typings. This can be changed via
`python.analysis.stubPath` in "settings.json".

Usage
=====

```sh
pip3 install -r requirements.txt
scons build/ALL/gem5.opt -j$(nproc)
./build/ALL/gem5.opt util/gem5-stubgen.py
```

"""

if __name__ == "__m5_main__":
    import m5

    # get a list of all modules exported by gem5
    modules = m5.__spec__.loader_state

    options = parse_options(
        ("--module " + " --module ".join(modules)).split(" ")
        + ["--output", "typings"]
    )
    generate_stubs(options)

if __name__ == "__main__":
    print("Error: This script is meant to be run with the gem5 binary")
    exit(1)