Scrapscript Interpreter

See scrapscript.org for some more information. Keep in mind that the syntax on the website will change a little bit in the coming weeks to match this repository.

Take a look inside scrapscript.py and all of its tests to get an idea for how the language works.

Usage

We support python3.8+.

# With a file
python3 scrapscript.py eval examples/0_home/factorial.scrap

# With a string literal
python3 scrapscript.py apply "1 + 2"

# With a REPL
python3 scrapscript.py repl

or with Cosmopolitan:

./build-com

# With a file
./scrapscript.com eval examples/0_home/factorial.scrap

# With a string literal
./scrapscript.com apply "1 + 2"

# With a REPL
./scrapscript.com repl

(if you have an exec format error and use Zsh, either upgrade Zsh or prefix with sh)

or with Docker:

# With a file (mount your local directory)
docker run --mount type=bind,source="$(pwd)",target=/mnt -i -t ghcr.io/tekknolagi/scrapscript:trunk eval /mnt/examples/0_home/factorial.scrap

# With a string literal
docker run -i -t ghcr.io/tekknolagi/scrapscript:trunk apply "1 + 2"

# With a REPL
docker run -i -t ghcr.io/tekknolagi/scrapscript:trunk repl

The experimental compiler:

Normal ELF

./scrapscript.py compile some.scrap  # produces output.c
./scrapscript.py compile some.scrap --compile  # produces a.out

Cosmopolitan

CC=~/Downloads/cosmos/bin/cosmocc ./scrapscript.py compile some.scrap  --compile # produces a.out

Wasm

CC=/opt/wasi-sdk/bin/clang \
CFLAGS=-D_WASI_EMULATED_MMAN \
LDFLAGS=-lwasi-emulated-mman \
./scrapscript.py compile some.scrap --compile  # produces a.out

Running Tests

python3 scrapscript.py test