This library implements a PEG parser generator.
run chmod +x ./make to turn ./make executable
Run ./make install to install the peg library. You should be able to (require peg) in your own racket programs after that. Or use #lang peg!
Run ./make update to apply changes, if you're hacking on it.
Run ./make docs to build the documentation.
Run ./make test to check that it is working after installation.
The PEG parser system is built in two stages. There is a lispy s-expression version. Then there is a self-hosted PEG syntax version.
The lispy version is implemented in:
peg.rkt - The PEG parsing VM and parser macro.peg-result.rkt - The fundamental data structure used for parse results. It's a kind of automatically joinable sequence.The PEG aspect is implemented in these files:
peg-src/peg-in-peg.rkt - The syntax of our peg language. In peg.peg-src/sexp-parser.rkt - A basic s-expression parser. In peg.Both of the above files are "bootstrapped" using the racket macro expander to produce the following:
peg-in-peg.rkt - expanded version of peg-src/peg-in-peg.peg.s-exp.rkt - expanded version of peg-src/s-exp.peg.peg-to-scheme.rkt - support for peg-in-peg.main.rkt - This adds the #lang peg glue to racket.