epsilon

epsilon is a programming language created in 1967.

#1335on PLDB

57Years Old

EOL is an imperative programming language for creating, querying and modifying EMF models. You can think of it as a mixture of Javascript and OCL, combining the best of both worlds. As such, it provides all the usual imperative features found in Javascript (e.g. statement sequencing, variables, for and while loops, if branches etc.) and all the nice features of OCL such as those handy collection querying functions.

epsilon website
epsilon first developed in Eclipse Foundation, Inc
file extensions for epsilon include eol
epsilon on Twitter

Example from the web:

var m : new Model;

m.name = "m";

// Create five packages
for (i in 1.to(5)){
  var package : Package = new Package;
  package.name = "p" + i;
  package.package = m;

  // Create three classes in each package
  for (j in 1.to(3)) {
    
    var class : Class = new Class;
    class.name = "c" + i + "" + j;
    class.isAbstract = false;
    class.package = package;
    
  }
  
}

// Assign random supertypes to the classes created
for (c in Class.allInstances) {
  c.extends = Class.allInstances.random();
}

Feature	Supported	Token	Example
Comments	✓		// A comment
Line Comments	✓	//	// A comment
Semantic Indentation	X

epsilon - Programming language

Language features