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This product is developed at the second-grade course, Informatic Science
Basic Experiment class at the University of Tokyo.

Picrin - a lightweight scheme interpreter

Freatures

R7RS compatibility (but partial support)
reentrant design (all VM states are stored in single global state object)
bytecode interpreter (based on Stack VM technology)
direct threaded VM
exact GC (simple mark and sweep strategy)
advanced REPL support (multi-line input, etc)

Homepage

Currently picrin is hosted on Github. You can freely send a bug report or pull-request, and fork the repository.

https://github.com/wasabiz/picrin

How to use it

build
```
  $ make build
```
built executable binary will be under bin/ directory and shared library libpicrin.so under lib/.
run

Simply directly run the binary bin/picrin from terminal, or you can use make to execute it like this.
```
  $ make run
```

In the default option, when make command is called without arguments, it builds the binary and right after that dropped into the picrin interactive shell (REPL).

Requirement

picrin scheme depends on some external libraries to build the binary:

bison
yacc
make
gcc
readline

The compilation is tested only on Mac OSX. I think (or hope) it'll be ok to compile and run on other operating systems such as Linux or Windows, but there's no guarantee :(

Authors

Yuichi Nishiwaki (yuichi.nishiwaki at gmail.com)

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