jacob-hegna/yasc

A (budding) interpreter for the lisp dialect Scheme

yasc

yasc is a (budding) interpreter for R6RS scheme. Currently, its operates exclusively as a scheme repl, but it will eventually support various interpretation modes, including interpreting files. Implementing these are lower priority than becoming R6RS compliant, however.

Warning: yasc is in extremely early development, and can only handle nested arithmetic (integer) expressions, eg (+ 1 2 (* 4 5 (- 8 9))) evaluates to -17. There is not a warning infrastructure developed yet, so malformed queries will result in a segmentation fault.

In this sense, yasc is (as of now) only a glorified RPN calculator.

Usage

Running yasc will begin a repl session. Running yasc-test will run the test suite (through google-test, so all the same configuration applies to yasc-test as would regular google-test projects).

Building

yasc is built through cmake, so the following commands should clone and build the project:

git clone https://github.com/jacob-hegna/yasc.git
mkdir -p yasc/build
cd yasc/build
cmake -G Ninja ../
ninja

yasc currently requires a compiler which supports c++17. I believe the only actual instances of non-c++14 features are structured bindings, but I do not have plans to support earlier compilers.