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eclipse / mraa

Linux Library for low speed IO Communication in C with bindings for C++, Python, Node.js & Java. Supports generic io platforms, as well as Intel Edison, Intel Joule, Raspberry Pi and many more.
http://mraa.io
MIT License
1.36k stars 613 forks source link

HawtJNI instead of SWIG for Java bindings? #1079

Closed sgjava closed 2 years ago

sgjava commented 2 years ago

I'm just starting with mraa, but I've built userspace bindings with https://github.com/fusesource/hawtjni which seems superior to SWIG. For example look at my userspace library https://github.com/sgjava/java-periphery. Just wondering after looking at the limitations in https://github.com/eclipse/upm/blob/master/docs/creating_java_bindings.md. I've also built U8g2 bindings this way https://github.com/sgjava/java-u8g2.

Interested in thoughts.

g-vidal commented 2 years ago

One of the interests of swig is to provide also nodeJS binding, for non dev users (like me) simplest is the best even if I have to accept less performance or quality, flexibility being my first need.

sgjava commented 2 years ago

Is there a reason you cannot use both?

tingleby commented 2 years ago

When we first started using Swig it was mostly for the Python and the Node bindings and Java kinda come with little work for use todo. I would imagine getting both to work would be possible but not something I would be wanting to start right now. We would welcome any patches though :)

sgjava commented 2 years ago

So I started out with CFFI for Python and JNA for Java. JNI is a lot faster than JNA, but obviously with a lot more complexity. Then I found HawtJNI. If you look at https://github.com/sgjava/java-periphery you will see the Java methods make sense and there's no need for meta programming. The Armbian folks are looking for IO bindings and suggested this, but https://github.com/vsergeev/c-periphery pretty much covers all the language bases except for JS which I'm not too keen on at this point. I will however see how much work it would be to generate bindings for mraa. I will close this out for now until I have time to look at this.