Golo, a lightweight dynamic language for the JVM.

The world didn't need another JVM language. So we built yet another one. A simple one.

Golo is a simple dynamic, weakly-typed language for the JVM.

Built from day 1 with invokedynamic, Golo takes advantage of the latest advances of the JVM. It is also a showcase on how to build a language runtime with invokedynamic.

Golo is being developed as part of the research activities of the DynaMid group of the CITI Laboratory at INSA-Lyon.

Website: http://golo-lang.org/
Twitter: @golo_lang
GitHub: https://github.com/golo-lang/golo-lang
Mailing-list: http://groups.google.com/group/golo-lang
StackOverflow: questions with the golo-lang tag

Starting from version 1.0.0, Golo adopts the semantic versioning scheme.

Getting Golo

Go to the Golo downloads page for general download instructions.

You can fetch Golo from Maven central under the org.golo-lang group.

We also provide Docker images based on Ubuntu 14.04 and Java SE 8: docker pull jponge/golo-lang (https://registry.hub.docker.com/u/jponge/golo-lang/)

Building Golo

Dependencies

Golo is built with Apache Maven. We suggest that you use Rake, too. The provided Rakefile acts as a frontend to the Maven build and simplifies some invocations.

Golo needs Java SE 7 or more to build and run. We suggest a fresh build of OpenJDK 8 as invokedynamic advances are happening there first, before being backported to OpenJDK 7 and eventually to the official Oracle JDK.

Building from sources

If this is the first time you are building Golo on a machine, you need to boostrap a subset of Golo, compile its Maven plugin and finally rebuild it all. Fortunately this is as simple as:

rake special:bootstrap

Once this is done you can use the common rebuild, clean or test:all tasks. All tasks can be listed using:

rake -T

Of course you can just call Maven directly if you like.

Building the documentation

The documentation is located in doc/ and is built using AsciiDoc.

The documentation can be built using the provided Rakefile. For instance one may build a HTML output using:

rake html

Building documentation on Ubuntu Linux

You'll need to perform the following steps before building the golo-lang docs on Ubuntu:

Perform sudo apt-get install asciidoc python-pygments fop to get the required dependencies.
Uncomment a line in /etc/asciidoc/asciidoc.conf to allow use of pygments highligher:

#Uncomment to use the Pygments source highlighter instead of GNU highlighter.
#pygments=

Building documentation on Fedora Linux

You'll need to install the following packages before building the golo-lang docs on Fedora:

asciidoc
python-pygments
fop

License

Copyright 2012-2014 Institut National des Sciences Appliquées de Lyon (INSA-Lyon)

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

Contributing

We welcome contributions from the community!

Check the CONTRIBUTING.md file for instructions.

Credits

Early testers

Big thanks to our early testers before Golo was made public! (in random order)

Pierre Colomb, Olivier Coupelon, Cédric Exbrayat, Frédéric Le Mouel, Nicolas Stouls, Henri Gomez, Julien Viet, Philippe Charrière, Ludovic Champenois, Thierry Chantier, Daniel Petisme, David Gageot, David Festal, Gildas Cuisinier, Thomas Maurel, Yannick Loiseau, Alexis Plantin, Sylvain Desgrais, William Guyot, Agnès Crépet, Cyril Lacote.

Companies

Serli, Ninja Squad.

dynamid/contextual-golo-lang