🕷 software releases

by ryan davis


ruby_parser version 3.2.0 has been released!

Published 2013-07-02 @ 20:55

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


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


3.2.0 / 2013-07-02

  • 1 major enhancement:

    • Added (rough draft) 2.0 support. Still missing some small / rare things.
  • 12 minor enhancements:

    • Added %i(symbol-names…) support. (%I too)
    • Added 140 more tests, jumping test count from 1376 to 2143. Yay for test reuse!
    • Added RubyLexer#brace_nest.
    • Added compare20 rake task to diff the grammar architecture against MRI.
    • Added lpar_beg and paren_nest to lexer to track state of parens in stabbies
    • Added shadow nodes for scoped block args.
    • Compound RubyParser now defaults to 2.0.
    • Fixed rake to < 10, because 10’s file dependency handling is so very broken.
    • Made it possible to specify version in bin/ruby_parse_extract_error w/ -v 18 19 20
    • Refactored to RubyParserStuff::ENCODING_ORDER to allow custom tweaking of encoding guessing. (samlown)
    • Switched rake debug to default to 2.0.
    • Translated some fixes across 1.8 and 1.9 from 2.0.
  • 42 bug fixes:

    • 2.0: Fixed a number of block args scenarios w/ kwargs
    • 2.0: Fixed args_tail mismatching against lexer.
    • 2.0: Fixed assocs to return a hash node.
    • 2.0: Fixed f_block_kw production.
    • 2.0: Fixed f_block_kwarg production.
    • 2.0: Fixed handling of stabby proc args in parens.
    • 2.0: Fixed lexing of kwsplat nodes.
    • 2.0: Implemented kwsplat nodes.
    • Added tUBANG to lexer.
    • Apparently ruby doesn’t warn for escaped octal that goes above 7. wtf.
    • Cleaned up a LOT of arg handling (block and defn, not calls) by using #args.
    • ESC_RE is set to unicode. This seems problematic. shrug
    • Either found a bug in MRI and/or fixed paren_nest count for []=? methods.
    • Extended IDENT_CHAR_RE on 1.9+ to top out at \u{10ffff}… because we NEED a million unicode chars.
    • Fixed % strings with interpolation.
    • Fixed BEGIN {} to return a sexp.
    • Fixed a[] += b. (stormbrew)
    • Fixed arg_blk_pass to allow for sub-args nodes.
    • Fixed assignable to allow for sexps to be passed to it.
    • Fixed assoc args in 1.9.
    • Fixed block_command and block_call (eg a.b c d) to #to_sym their args properly.
    • Fixed bug in compound RubyParser so it rescues RubyParser::SyntaxError.
    • Fixed env registration of cdecls.
    • Fixed lex value for { when expr_endfn.
    • Fixed lex_state for close paren/brace/bracket.
    • Fixed lex_state transition for 1.9 if we lexed a defn name. Only 1.8 is odd.
    • Fixed lexer problem with state mgmt of identifiers that also have registered var name.
    • Fixed lexing of “1 *\n” to have the correct lex_state.
    • Fixed lexing of heredocs vs chevron for some lex_states.
    • Fixed op_asgn nodes to #to_sym their args properly.
    • Fixed optional value block args.
    • Fixed parsing of ENCODING on ruby 1.8 (vcall).
    • Fixed some oddity where 1.9 lexing was blowing up on “0o”. Seems invalid now.
    • Fixed strings with escaped octals > 128. Also… wtf.
    • Fixed support for empty symbol (wtf?).
    • Lexer is now declared UTF-8 internally. Hopefully this will fix the encoding mess.
    • Made UTF_8 the default guess on encodings when it isn’t explicit.
    • Parsing of ENCODING on ruby 1.9+ (in ruby 1.9+) is now colon2 sexp. (whitequark)
    • Renamed RubyLexer#nest to string_nest
    • RubyLexer#unescape ignores bad octal/hex and returns unicode strings.
    • Switched a number of lexical constructs to use IDENT_CHAR_RE instead of \w. I wish there were something cleaner for regexps + unicode.
    • Switched ruby_parse_extract_error to use binread.
  • rdoc: http://docs.seattlerb.org/ruby_parser
  • home: https://github.com/seattlerb/ruby_parser
  • bugs: https://github.com/seattlerb/ruby_parser/issues