greg used to be _why's fork of Ian Piumarta's peg/leg, with the following differences:
- Some bug fixes
Since then, better error handling and other various features have been added.
With a GCC-like compiler,
make should give you a greg executable.
If you modify
greg.g (greg's own grammar is written in LEG), run
make grammar to
greg.c using greg itself, then run
make again to build it.
- GitHub pull requests are the preferred way to submit contributions.
- Don't modify
greg.c, instead, modify
greg.gand regenerate it as shown above.
- Make sure greg is still self-hosting before you submit your code.
- Major changes warrant a version bump, but they also warrant discussions.
For a list of contributors, see the GitHub contributor graph.
peg/leg is copyright (c) 2007 by Ian Piumarta released under an MIT license. As is greg.