https://github.com/thomasmodeneis/jgo
The JGo - Java Compiler and Runtime environment for Golang
https://github.com/thomasmodeneis/jgo
Last synced: 5 months ago
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The JGo - Java Compiler and Runtime environment for Golang
- Host: GitHub
- URL: https://github.com/thomasmodeneis/jgo
- Owner: thomasmodeneis
- License: gpl-3.0
- Created: 2015-05-30T14:51:21.000Z (almost 10 years ago)
- Default Branch: master
- Last Pushed: 2015-06-01T16:51:57.000Z (almost 10 years ago)
- Last Synced: 2024-04-14T07:28:17.321Z (about 1 year ago)
- Language: Scala
- Homepage:
- Size: 815 KB
- Stars: 132
- Watchers: 9
- Forks: 11
- Open Issues: 6
-
Metadata Files:
- Readme: readme.md
- License: LICENSE
Awesome Lists containing this project
- awesome-java - JGO
README
Description
===========
 The [JGo Project](http://jgo.herokuapp.com/) aims to provide a complete compiler and runtime environment for the Go programming language to/on the Java Virtual Machine.
The jgoc compiler is written in Scala and the runtime in Java.
Drone.io continuous integration service
---------------------------------------
[](https://drone.io/github.com/thomasmodeneis/jgo/latest)
Gitter Chat
-----------
[](https://gitter.im/thomasmodeneis/jgo?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge)
Why the JVM?
============
The selection of the JVM was motivated by:
Compatibility & JVM debug/profiling
------------------------------------
A lot of excellent libraries are written for the JVM.
[JGo](http://jgo.herokuapp.com/) hopes to make existing Go users more productive by enabling them to use these.
Furthermore, many groups have large codebases written in Java, Scala, and other JVM languages.
[JGo](http://jgo.herokuapp.com/) is an attempt to bring these groups into the fold, group and expose them.
Status of the Project
=====================
JGo is a work in progress.
Many features of the Go programming language are not yet fully supported.
Currently, these include:
* Structs; (nearing completion)
* Methods;
* Packages and multi-file compilation;
* Interfaces;
* Lambda expressions;
* Closures (sub-feature of lambda expressions);
* Concurrency;
* defer, panic, and recover; and Switch statements.
DOCS
=====
[JGO-DOCS](http://jgo.herokuapp.com/api/)
Contribute
==========
Contributing to JGO
=========================================
JGO welcomes contributions, feel free to play and pull requests :)
Issues
------
Feel free to submit issues and enhancement requests.
Contributing
------------
Please refer to each project's style guidelines and guidelines for submitting patches and additions. In general, we follow the "fork-and-pull" Git workflow.
1. Fork the repo on GitHub
2. Raise a issue on our issue tracker
3. Commit changes to a branch in your fork using the issue, eg: git commit -m "#1"
4. Pull request with your changes
5. Thank you o/
NOTE: Be sure to merge the latest from "upstream" before making a pull request!
This project contains a Ubuntu 12.04 Sandbox, a vagrant [Vagrant](http://vagrantup.com/)- based Puppet
development environment used for running and testing JGo with the OpenJDK 8 modules.
OpenJDK
========
JGO Uses OpenJDK 8.
Requirements
============
To use this, you must have the following items installed and working:
* [VirtualBox](https://www.virtualbox.org/)
* [Vagrant 1.7+](http://vagrantup.com/)
Usage
=====
Initial Startup
---------------
To bring up the Puppet Sandbox environment, issue the following command:
```vagrant up```
Puppet will install Git and OpenJDK 8.
```vagrant ssh```
Run SBT
-------
When the shell command for vagrant is ready run sbt
```
$ cd /opt/jgo/
$ sbt
Getting org.scala-sbt sbt 0.13.8 ...
[info] Set current project to jgo (in build file:/opt/jgo/)
```
```
> run hello.go package.class
[info] Updating {file:/opt/jgo/}jgo...
[info] Resolving org.fusesource.jansi#jansi;1.4 ...
[info] Done updating.
```
Run SBT Command
---------------
When the command line for sbt shows type run hello.go package.class
This will compile and execute the following go code into the JDK8:
```
func say(msg string) {
print msg
}
func main(args [4]string) {
msg := "hello, world"
say(msg)
for i := 0; i < 10; i++ {
print i
}
}
```
Output:
```
> run hello.go package.class
[info] Updating {file:/opt/jgo/}jgo...
(...)
[info] Compiling 132 Scala sources and 17 Java sources to /opt/jgo/target/scala-2.10/classes...
(...)
[info] Running jgo.tools.compiler.Main hello.go package.class
LoadVar
PrintString
Decl
PushStr "hello, world"
StoreVar
LoadVar
InvokeFunction Function(say, func(string))
Decl
PushInt 0, I32
StoreVar
goto: [cond of for 5]
Lbl top of for 5
LoadVar
PrintNumeric I32
Lbl continue 5
Incr , 1, I32
Lbl cond of for 5
LoadVar
PushInt 10, I32
if < I32: [top of for 5]
Lbl break 5
Undecl
Undecl
```
License
=======
GNU 3
-----
GNU General Public License, version 3.
Project migrated from https://code.google.com/p/jgo/ by Harrison Klaperman.