https://github.com/wafelack/orion

Orion is a high level, purely functional programming language with a LISP based syntax.
https://github.com/wafelack/orion

language lisp orion programming-language

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Orion is a high level, purely functional programming language with a LISP based syntax.

• Host: GitHub
• URL: https://github.com/wafelack/orion
• Owner: Wafelack
• License: gpl-3.0
• Created: 2021-01-31T09:47:17.000Z (about 4 years ago)
• Default Branch: master
• Last Pushed: 2022-10-21T01:36:07.000Z (over 2 years ago)
• Last Synced: 2025-03-29T11:07:06.761Z (23 days ago)
• Topics: language, lisp, orion, programming-language
• Language: Rust
• Homepage:
• Size: 2.1 MB
• Stars: 236
• Watchers: 2
• Forks: 9
• Open Issues: 8
• Metadata Files:
  • Readme: README.md
  • License: COPYING

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README

        


Orion

=====

---

  

  Orion is a high level, purely functional programming language with a LISP based syntax.

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---

Features

--------

- Lightness: Orion source code fits under 3k SLOC and its binary is under 2MB.

- Portable: Orion code is run on a virtual machine, that avoids architecture-specific problems.

- Purely functional: Pattern matching, immutability, side effects control.

- Elegant: It embeds shorthands such as `'` for `(\ () )`, `[x y z]` for `(Cons x (Cons y (Cons z Nil)))` or `{ * }` for `(begin *)`.

Installation

------------

You will need: the Rust toolchain (1.50+), a "make" program, a POSIX shell (linked in `/bin/sh`) and Git.

```bash

$ git clone https://github.com/orion-lang/orion.git

$ cd orion/

$ chmod +x configure

$ ./configure

$ make

$ make install PREFIX=/wherever/you/want/

```

Documentation

-------------

You can find a detailed tutorial, the standard library, the core and the builtins documentation [here](docs/).

Quick Example

-------------

Factorial function:

```clojure

(def factorial (λ (n)

    (match n

    (0 1)

    (_ (* n (factorial (- n 1)))))))

```

Performance Tests

-----------------

### `ack 3 3`

|       Language       | Average|Median |Amplitude|

|----------------------|--------|-------|---------|

|       **Nixt**       |  126ms | 121ms |  134ms  |

|**Orion Interpreter** |76.106ms| 75ms  |   21ms  |

|     **Orion VM**     | 4.168ms|  4ms  |   4ms   |   

|      **CPython**     | 0.516ms|0.482ms| 0.541ms |

Acknowledgments

---------------

Special thanks to [@Mesabloo](https://github.com/mesabloo) and [@felko](https://github.com/felko) for support and help about implementation details.

License

-------

This software and all associated items (assets, documentation, etc) are licensed under the GNU General Public License version 3.0 and higher.