Frensta Open Java

What is Froj?

Froj (Frensta Open Java) is a lightweight interpreter written in Java that makes use of the JVM.

Frensta?

Where im currently living, in the countryside in a small town called 'Fränsta' in Sweden.

Why Froj?

I wrote this interpreter as a way to learn and get some deeper understanding how interpreters is made.

TODO:

Implement some standard functions and method such as:

• Read user input
• Block style comments /* */
• Lists
• And more!

Pre-requisites

Java Runtime (1.8 or newer).

Wiki

Check out the wiki to get started

Hello World

The simplest way to get started:

• Download the .jar under releases

• Create file helloworld.froj with the contents below:

  print "Hello World";
  

• Run java -jar froj.jar ./helloworld.froj

Build the .jar from source:

Makefile

• cd to /src
• runmake compile

javac

• cd to /src
• run javac -d ./ ./com/saasta/froj/*.java
• run jar -cfm froj.jar ./META-INF/MANIFEST.MF ./com/saasta/froj/*.class
• Optional: Remove the .class files after creating the .jar:
  • Linux: rm -f ./com/saasta/froj/*.class
  • Windows(CMD): del ./com/saasta/froj/*.class
  • Windows(PowerShell): Remove-Item ./com/saasta/froj/*.class