An experimental port of TinyRb to Google go, both as a means of learning go and exploring alternate approaches to implementing Ruby. Work is currently focused on the GoLightly VM.
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peg Further work on the PEG parser. Jan 14, 2010
site Update docs and make README render pretty on GitHub. Mar 11, 2009
test Implement method_missing. Required a couple ugly tweaks in the byteco… May 3, 2009
vm Manually unrolling parser for PEG grammars. Dec 6, 2009
.gitignore Remove `begin` block parsing for now and move test to pending. Apr 11, 2009



A tiny subset of Ruby with a Lua'esc VM.

Everything in TinyRb should run in the big Ruby. (except bugs and things that don't comply to the principle of least surprise.) But not everything in the big Ruby should run in tinyrb.

This is a work in progress and not usable for “real things” yet. See TODO for a couple of those things that need to be done. #tinyrb on freenode


make test # optional
./tinyrb -h

What WON'T be in tinyrb (tiny patches accepted)

  • for

  • redo, retry

  • if … do, while … do, etc

  • alias keyword (see alias_method)

  • undef keyword (see undefine_method)

  • throw, catch

  • Alternate string delimiters (%q, %Q, etc.)

  • heredoc strings

  • Parallel assignment (a, b = 1, 2)

  • as . (Class::new)

  • Character code literal (?c)

  • protected, private, public (yes everything is public, mind you)

  • ObjectSpace

  • $SAFE (but Sandbox mode at the VM level)

  • … others to come for sure.


Inspired by:

GC Copyright 1988, 1989 Hans-J. Boehm, Alan J. Demers PCRE Copyright © 1997-2008 University of Cambridge released under BSD license

tinyrb is Copyright © Marc-Andre Cournoyer <> and released under Ruby license