This year, the Groovy Project is applying to the Google Summer of Code as an organization. In the previous years, we had a few students from the GSoC programme work on Groovy through the Codehaus organization, but in 2013 we'd like to expand our involvement in the programme by also offering opportunities to other projects of the wider Groovy Ecosystem to participate in this effort.
Below, you will find various project ideas for Google Summer of Code 2013, and we'll update this page as we refine our application and as other project proposals arrive and by including feedback both from the Groovy ecosystem and the students who would like to work on a Groovy based project.
Groovy on Android (DiscoBot project)
Currently, Groovy is not able to run properly on Google's Android mobile platform out of the box. A couple years ago, a first GSoC project (nicknamed DiscoBot), started porting Groovy to Android, using Groovy 1.7, but performance wasn't there (20s to startup a simple Hello World). The goal of this GSoC project is to work with the Groovy core team and the past contributors of the DiscoBot project, towards the goal of making any Groovy program to run on the Android platform well, so that apps for such mobile phone can be written fully in Groovy.
It will be interesting to investigate what modifications can be brought to Groovy to make it support Android in a more straightforward manner, how we can leverage the recently introduced static compilation capabilities, and also see how Groovy builders and other features can help further streamline the development of Android applications using Groovy.
Possible mentors: Jochen Theodorou or Guillaume Laforge, or one of the contributors of DiscoBot
An Antlr v4 grammar for Groovy
As of today, Groovy 2 still uses Antlr v2 for its grammar. The original grammar was based off of the Java grammar itself. But we would like to create a dedicated grammar for Groovy with the latest version of Antlr, ie. with version 4. Antlr v4 has evolved nicely and makes it easier to evolve grammars, without the painful work of rule disambiguation. So the idea is to develop a clean room implementation of the Groovy grammar for the upcoming versions of Groovy, that would be able to also cover new syntax elements, like the support of Java 8 lambda syntax, or the type annotation JSR, and we'd also take the opportunity to tackle things that we haven't covered so far, like JavaDoc comments in the resulting AST.
Possible mentor: Jochen Theodorou