The prototype with inline rust

Problem statement

For example, user has several shared libraries on rust. At launch user doesn't know the number of libs.

The task is to generate the Rust.java class with all native methods and call every of them in runtime.

Running

Run script.py to run the program from the project directory:

$ python3 script.py

The output of the program will be something like this:

Briefly the script compile rust libs from src/resources/libs, generates Rust.java according to libs in resources, compile it and start Rust.class from build. Name of the libs start with "lib" and consist of letters and numbers.

Adding a lib

You can add a new lib in resources running dedicated script in tools like:

$ python3 ./tools/add_lib.py lib4

As soon as you have added a new library, in the generated file Rust.java there will be a new method to run it.

//Rust.java
...
    static void fun_lib2(){
        final Path lib = libs.resolve("lib2/target/debug/liblib2.so");
        System.load(lib.toString());
        System.out.println(lib2());
    }
    private static native String lib2();
...

So starting script.py again you get:

Now it also calls the new lib!