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by ryan davis



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ruby_parser version 3.0.0.a4 has been released!

Published 2012-07-26 @ 16:53

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)
  if arg1 == 0 then
    return 1
  end
  return 0
end

becomes:

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

Changes:

3.0.0.a4 / 2012-07-26

  • 10 minor enhancements:

    • ‘rake debug’ defaults to 1.9 parser since that’s all I’m doing these days
    • 1.9: Fixed f { (a, b, …), … … } handling.
    • Added ‘rake extract F=path’ task to quickly extract errors from large files
    • Added on_error handler to provide more readable error message.
    • Aliased #process to #parse.
    • Renamed #parse to #process (legacy name), added default path of ‘(string)’
    • cleaned ruby_parse_extract_error output and fixed to 1.9 parser
    • ruby_parse_extract_error expands shell globs from ARGV
    • ruby_parse_extract_error should also capture RuntimeError
    • yyerror(msg) now warns with the message instead of ignoring it.
  • 3 bug fixes:

    • 1.9: Fixed bug lexing/parsing [ in rhs.
    • 1.9: Fixed f { ((a, b), c) … } handling
    • 1.9: fixed newline handling during expr_value
  • bugs: https://github.com/seattlerb/ruby_parser/issues
  • rdoc: http://docs.seattlerb.org/ruby_parser
  • home: https://github.com/seattlerb/ruby_parser