Objective-J Runtime

A Node runtime for the Objective-J language.

It uses an Objective-J to JavaScript compiler by Martin Carlberg.

How to use

Install using npm

npm install objj-runtime

Make sure you have grunt commandline installed. If not install with

npm install -g grunt-cli

Compile and build the runtime with grunt from inside the objj-runtime directory.

grunt

Copy a built Cappuccino Foundation framework to the Framework directory. You might need to create the Framework directory inside the objj-runtime directory.

Create an Objective-J main.j file

@import <Foundation/Foundation.j>

@implementation MyClass : CPObject

- (CPString)myMethod {
    return [CPString stringWithFormat:@"Node version: %@", process.version];
}

@end

function main(args, namedArgs)
{
    console.log("Hello World");
    console.log([[[MyClass alloc] init] myMethod]);
}

Compile and run

bin/objj main.j

You can debug with the node-inspector and Chrome.

node --inspect-brk bin/objj main.j

A framework that is already built can be use if placed inside the Framework directory.

To update the Objective-J runtime you need to copy the files from the Cappuccino Objective-J directory into the Objective-J directory. (This will not work yet as there are some changes to the Objective-J runtime that is not pushed to the Cappuccino project. Should work if you merge in your changes)

Compile and build the runtime with grunt

grunt

There are many things that don't work yet. For example you can't just compile your files. You have to compile and run.

Example

Example of very simple backend webserver in Objective-J can be downloaded here as a zip file.

Start the backend webserver from the command prompt with

bin/objj main.j

From another command prompt json data can be stored with:

curl 127.0.0.1:1337/Name/42 -d '{"name": "martin"}'

It can be retrieved with:

curl 127.0.0.1:1337/Name/42

The url uses a pattern with entity and identifier for storage. It looks like this:

curl 127.0.0.1:1337/<entity>/<identifier>