JSMF-Core

The JavaScript Modelling Framework (JSMF) has been designed for providing a flexible modelling environment that could support the many modelling situations: from informal model to code generation. It is a JavaScript embedded DSL inspired by the Eclipse Modelling Framework (EMF) in its basic functions but that rely on JavaScript dynamic typing and on a relative independence between a metamodel and a model.

Install

Thanks to npm: npm install jsmf-core

Usage and Example

In order to access the most commun JSMF elements use:

const JSMF = require('jsmf-core')
      Model = JSMF.Model
      Class = JSMF.Class
      Enum = JSMF.Enum

Creating a metamodel element (i.e., Class)

Here we created a Class "Family" and a "lastname" attribute. This syntax is inspired by the EMF one.

const Family = Class.newInstance('Family')
Family.addAttribute('lastname' , String )

Alternatively you can use a more compact syntax (here defining a Person Class) using javascript objects.

const Person = Class.newInstance ('Person', [] ,
{ firstname : String , age : JSMF.Positive })

Now we have the Class "Person" and "Family" let's create a reference between those two Classes.

Family.addReference ('members', Person , JSMF.Cardinality.Some ) 

Creating a model element conforms to a metamodel element.

const john = new Person ()
john . firstname = ’ John ’
john . age = 46

Alternatively you can also use a compact syntax:

const kennedy = Family . newInstance ({ name : ’ Kennedy ’ ,
members : [ john ]})

You can find examples, discover the other components and test it online with Tonic on JSMF github website (https://js-mf.github.io/#portfolio)

License information

See License.