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lf-lang / reactor-c

A reactor runtime written in C
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New Python functions `lf.package_directory()` and `lf.source_directory()` #455

Closed edwardalee closed 1 day ago

edwardalee commented 1 week ago

This PR adds to Python a mechanism to obtain the path of the source directory (the main .lf file) and the package root (where src and bin are). This mirrors the constants available in the C target LF_SOURCE_DIRECTORY and LF_PACKAGE_DIRECTORY.

This PR is joint with @vinzbarbuto.

Summary by CodeRabbit

coderabbitai[bot] commented 1 week ago

Walkthrough

The recent updates introduce two new functions, py_source_directory and py_package_directory, in the python/include/pythontarget.h and python/lib/pythontarget.c files. These functions are designed to return directory paths as Python strings, enhancing the module's capabilities in handling directory paths.

Changes

Files Change Summary
python/include/pythontarget.h Added declarations for py_source_directory and py_package_directory.
python/lib/pythontarget.c Implemented py_source_directory and py_package_directory to return decoded paths.

Sequence Diagram(s)

sequenceDiagram
    participant User
    participant PythonModule
    User->>PythonModule: Call py_source_directory()
    PythonModule-->>User: Return source directory path as string

    User->>PythonModule: Call py_package_directory()
    PythonModule-->>User: Return package directory path as string

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edwardalee commented 1 week ago

This is needed so that a reactor can access a data file. The motivating application is an ML model. Do you have an alternative suggestion?

cmnrd commented 1 week ago

Why not provide the path via runtime parameters? This could be done via CLI arguments (I guess this is not supported for the python and C targets) or by reading an environment variable.

lhstrh commented 4 days ago

@cmnrd:I think the conclusion we reached during our last call was that we can admit this as a temporary solution?