objectionary / sandbox

A simple EO program together with an environment to compile and run it

You can play with EOLANG here, in a few simple steps:

First, clone this repo to your local machine and go to the sandbox directory (you will need Git installed):

$ git clone https://github.com/objectionary/sandbox
$ cd eo/sandbox

Then, compile the code (you will need Maven 3.3+ and Java SDK 8+ installed):

$ mvn clean compile

Intermediary *.xml files will be generated in the target directory (it will be created). Also, there will be *.java and *.class files. Feel free to analyze them: EO is parsed into XML, then translated to Java, and then compiled by Java SDK to Java bytecode. Finally, just run the bytecode program through JRE:

$ ./run.sh 9
9th Fibonacci number is 34

Should work. If it doesn't, submit an issue, we will fix it.

Then, you can modify *.eo files, run mvn compile to compile them again and run.sh to run it again. eo/sandbox/app.eo is the entrypoint of the program. app object will be "evaluated", when the program is run, so modify it to make changes to the program. Then, proceed with compilation and run the program again.

In Docker

If you don't have Maven or JDK installed on your system, you can compile and run the application in Docker. You must have Docker and docker-compose installed to use this method.

First, ccompile the sources using Maven in Docker container. The output of the compilation will be in the target/ directory.

$ docker-compose -p eo-lang run maven

Overriding the default command

By default, the container's command is mvn compile. You are free to override it, when running from terminal by appending the command you want to run after the service name, e.g. to run mvn clean compile use:

docker-compose -p eo-lang run maven mvn clean compile

After the compilation, the resulting Java program can be run in Docker via:

$ docker-compose -p eo-lang run app

Passing command line arguments

It is possible to pass command line arguments to the program by appending them after the container name, e.g.:

docker-compose -p eo-lang run app "Command line arguments go here" 10