robotlolita/siren

---

robotlolita/siren.json

{
  "createdAt": "2013-12-26T20:48:11Z",
  "defaultBranch": "master",
  "description": "[status: superseded by Purr] Sirën is an experimental context-based programming language with ad hoc multiple hierarchies, and multimethods.",
  "fullName": "robotlolita/siren",
  "homepage": "",
  "language": "JavaScript",
  "name": "siren",
  "pushedAt": "2017-01-14T22:06:15Z",
  "stargazersCount": 128,
  "topics": [],
  "updatedAt": "2025-07-09T00:23:58Z",
  "url": "https://github.com/robotlolita/siren"
}

Siren is an experimental prototype-based object-oriented language. It differs from existing languages in that it uses a single delegation slot for sharing (and cheap instantiation), but allows controlled lexical extensibility.

Getting started

Siren’s support for arbitrary-precision arithmetic uses the bignum library, so you’ll need to have a C++ compiler and the headers for the OpenSSL library.

Install the Node.js 4.0.0+ (you’ll need WeakMaps and Symbols), Make, and Git. After that clone this repository, and run make compile. This will generate a bin/siren compiler/interpreter, and a REPL bin/isiren.

$ git clone https://github.com/robotlolita/siren.git
$ cd siren
$ npm install
$ make all
$ bin/siren

You can use the REPL to try out pieces of code interactively:

$ bin/isiren
Type :quit to exit (or ^D).

> 1 + 1
=> <Integer: 2>

You can run individual files with the same binary. There are examples in the examples/ folder:

$ bin/siren examples/trivial/hello-world.siren

You can compile things to plain JavaScript using the --compile flag, but you’ll need to pass the proper runtime to the module in order to run it:

$ bin/siren --compile examples/trivial/hello-world.siren > hw.js
$ node -e "require('./hw.js')(require('./runtime))"
Hello, world

More

• Feel free to ask @robotlolita anything related to this project on Twitter.

• Things will eventually be added to the Wiki, but also blogged about on http://robotlolita.me/