_cythonhook.py

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Provides a module finder class.

This is not a public facing module; Users of pythonjit should use pythonjit.enable to automatically compile imported modules, or pythonjit.cross_compile as a utility to compile modules without importing them in python (e.g. in order to distribute them).

The Import_Hook class inserts itself into sys.meta_path when instantiated. When import statements are used, Import_Hook has the opportunity to locate the file to be imported. It uses this opportunity to locate the .py source code file for the module (if available), and uses _compile.cross_compile it to a static library.

After that, it's job is done; It passes the responsibility to find and load modules to the next or default finder/loader. That finder/loader will find the compiled version of the imported module, which will be used instead of the source code version of the module.