sonic-pi

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

C++

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Parser::Base.parse_file

Parses Ruby source code by reading it from a file. If the source
cannot be parsed, {SyntaxError} is raised and a diagnostic is
printed to `stderr`.

Source | Google | Stack overflow

Edit

git clone [email protected]:sonic-pi-net/sonic-pi.git
cd sonic-pi
open app/server/ruby/vendor/parser-2.2.2.1/lib/parser/base.rb

Contribute

# Make a new branch
git checkout -b -your-name--update-docs-Parser--Base-parse_file-for-pr

# Commit to git
git add app/server/ruby/vendor/parser-2.2.2.1/lib/parser/base.rbgit commit -m "better docs for Parser::Base.parse_file"

# Open pull request
gem install hub # on a mac you can `brew install hub`
hub fork
git push <your name> -your-name--update-docs-Parser--Base-parse_file-for-pr
hub pull-request

# Celebrate!