sonic-pi

https://github.com/sonic-pi-net/sonic-pi

C++

Code. Music. Live.

Parslet::ClassMethods#rule

Define an entity for the parser. This generates a method of the same
name that can be used as part of other patterns. Those methods can be
freely mixed in your parser class with real ruby methods.

  class MyParser
    include Parslet

    rule(:bar) { str('bar') }
    rule(:twobar) do
      bar >> bar
    end

    root :twobar
  end

Source | Google | Stack overflow

Edit

git clone [email protected]:sonic-pi-net/sonic-pi.git

cd sonic-pi

open app/server/ruby/vendor/parslet/lib/parslet.rb

Contribute

# Make a new branch

git checkout -b -your-name--update-docs-Parslet--ClassMethods-rule-for-pr

# Commit to git

git add app/server/ruby/vendor/parslet/lib/parslet.rbgit commit -m "better docs for Parslet::ClassMethods#rule"

# Open pull request

gem install hub # on a mac you can `brew install hub`

hub fork

git push <your name> -your-name--update-docs-Parslet--ClassMethods-rule-for-pr

hub pull-request

# Celebrate!