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by ryan davis



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ruby_parser version 3.0.0.a9 has been released!

Published 2012-10-22 @ 16:45

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)))

Changes:

3.0.0.a9 / 2012-10-22

Holy crap! I’ve hit a 99.92% success rate against 558k files! 492 failed parses to go. NOW is the time to start testing ruby_parser against your code!

  • 16 minor enhancements:

    • 1.9 parser: Finished magic encoding and utf-8 bom support.
    • 1.9: Added leading dot support eg “a\n.b”.
    • 1.9: Added partial handling for *arg and opt=val args in block args.
    • 1.9: OMFG Encoding is the worst thing ever. Overhauled encoding support once again. It is much better at doing last ditch guessing of the encoding of the source file.
    • 1.9: added String#grep for legacy support.
    • Added Sexp#block_pass?
    • Added ability to delete slow files when they timeout.
    • Added block_dup_check and refactored grammar code to use it for block arg handling.
    • Added in_lex_state?(*states) to clean up lexer code.
    • Added tentative support for optional block args. THIS IS SUBJECT TO CHANGE!!
    • Added toggleable debugging to StackState to make my life easier
    • All untested uses have not moved but have been laced with poison.
    • Finally got good tests for most forms of double-block arg errors.
    • Moved all known uses of SyntaxError to RubyParser::SyntaxError
    • f_block_optarg now always returns a block node.
    • ruby_parse_extract_error uses Find.find instead of globbing so dot files aren’t missed.
  • 12 bug fixes:

    • 1.9: Completely ignore IndexError in unread_many because… you know… it sucks.
    • 1.9: Fixed lex state after lexing ? in trinary.
    • 1.9: Fixed lex state in some ternarys.
    • 1.9: Fixed parsing of “1 ? b(‘’) : 2\na d: 3”… ARE YOU NOT GLAD?!?!
    • Fix Timeout differences between 1.8 and 1.9 :(
    • Fixed emacs-style encodings to deal with no whitespace.
    • Fixed error message for bad % codes. (whitequark)
    • Fixed lexing of :a==>b vs :a===b vs :a==>b. P.S. Your space bar is broken. chump.
    • Fixed lexing of rare numeric formats.
    • Fixed magic comment encodings on DOS files … :/
    • Fixed ruby_parse_extract_error to exit non-zero on errors.
    • Removed Symbol#is_argument and switch usage to is_arg?
  • bugs: https://github.com/seattlerb/ruby_parser/issues
  • home: https://github.com/seattlerb/ruby_parser
  • rdoc: http://docs.seattlerb.org/ruby_parser