Skip to content
Yet Another Mediocre Small Lisp Dialect in C++
Branch: master
Clone or download
Fetching latest commit…
Cannot retrieve the latest commit at this time.
Permalink
Type Name Latest commit message Commit time
Failed to load latest commit information.
doc
examples
scripts
src
tests
Copyright.txt
Makefile
README.md

README.md

Sic: Yet Another Mediocre Lisp Dialect in C++

The other day, I had an interesting realization about modern C++. One thing led to another and here I am with another Lisp dialect. Sorry about that.

Why?

It seemed like a good idea at the time.

What's it good for?

¯\_(ツ)_/¯

Also,

1. It's simple.

Most Lispish languages care about fripperies like efficiency and so will internally convert Lisp(ish) expressions to more efficient forms.

Not Sic. Here, it's still a list. If you prod at one with lldb, you can chase the pointers. (Don't though; call function po on it instead.) It stays Lispy all the way down.

2. It integrates nicely with C++

Everything in Sic is a plain old C++ type, so you can easily move between it and native code. In fact, this:

$(print, "2 + 2 =", $(add, 2, 2), "\n")

is a valid C++ expression that does what you'd expect (if you've imported the sic namespace). So it's easy to integrate it into a C++ program.

3. No external files needed

Unlike most Lispish language, there is no external library; all functions are written in C++.

4. You can horrify Lisp purists with it.

$(print, "C++ is an acceptable Lisp!\n")

What's wrong with it?

  1. There's a lot of powerful Lisp(ish) functionality that isn't written yet.
  2. There's no garbage collection. It just leaks memory.

Compiling

On a sufficiently Unix-like operating system with Clang installed, just

cd src
make

If you want to use gcc instead, edit the Makefile first.

Note that this needs a recent compiler, one that supports C++17.

This will produce both an executable interpreter (sic) and a library (libsic.a).

Documentation

The reference manual is generated during building but there's a courtesy copy here.

I also did a blog post about it here.

License

This is Free/Open-source software released under the terms of the wxWidgets license (i.e. the GNU LGPL but with less restrictions on binary distribution.)

See Copyright.txt for details.

You can’t perform that action at this time.