zaoqi-unsafe / schem-erl

Interpreter for a small subset of Scheme implemented in Erlang.

schem-erl

Intepreter for a small subset of Scheme. The eval part of read-eval-print is implemented as a pure Erlang function.

Building and running

make escript
rlwrap ./schem

Running tests

make check

Features

• Lexical scoping
• Closures (with mutable environment)
• Naive garbage collection of no longer referenced closure environments
• Implemented primitives
  • begin
  • quote
  • set!
  • define
  • lambda
  • car
  • cdr
  • cons
  • length
  • list
  • +, -, *. /
  • <, >, <=, >=, =, equal?
• Implemented types
  • Symbol
  • Number

Limitations

• Anything missing in Features
• Error handling

Author

Markus Ekholm (markus at botten dot org).

License

3-clause BSD. For details see COPYING.