ruby_parser version 3.10.0 has been released!

Published 2017-07-17 @ 16:00

ruby_parser (RP) is a ruby parser written in pure ruby (utilizing racc–which does by default use a C extension). RP’s output is the same as ParseTree’s output: s-expressions using ruby’s arrays and base types.

As an example:

def conditional1 arg1
  return 1 if arg1 == 0
  return 0
end

becomes:

s(:defn, :conditional1, s(:args, :arg1),
  s(:if,
    s(:call, s(:lvar, :arg1), :==, s(:lit, 0)),
    s(:return, s(:lit, 1)),
    nil),
  s(:return, s(:lit, 0)))

Tested against 801,039 files from the latest of all rubygems (as of 2013-05):

• 1.8 parser is at 99.9739% accuracy, 3.651 sigma
• 1.9 parser is at 99.9940% accuracy, 4.013 sigma
• 2.0 parser is at 99.9939% accuracy, 4.008 sigma

Changes:

3.10.0 / 2017-07-17

• 4 minor enhancements:

  • Added support for ‘squiggly heredocs’ (indented content). (jjoos)
  • Bumped oedipus_lex to ~> 2.5.
  • Bumped sexp_processor to ~> 4.9.
  • Made STRICT_SEXP=1 safe: converted indexed sexps to semantic calls where needed.

• 5 bug fixes:

  • Clear and restore cmdarg stack around defs args and body. (presidentbeef)
  • Conditionalize use of sexp_body= to make it compatible w/ sexp_processor 4.9.0
  • Fix up line numbers in strings with newlines and #. (presidentbeef)
  • Fixed line numbers of resbodies.
  • Fixed some tracking of lexical state. Fixes bug #249.
• home: https://github.com/seattlerb/ruby_parser
• bugs: https://github.com/seattlerb/ruby_parser/issues
• rdoc: http://docs.seattlerb.org/ruby_parser