ruby_parser version 3.4.0 has been released!
* home: <https://github.com/seattlerb/ruby_parser>
* bugs: <https://github.com/seattlerb/ruby_parser/issues>
* rdoc: <http://docs.seattlerb.org/ruby_parser>
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:
### 3.4.0 / 2014-02-04
* 1 major enhancement:
* Replaced hand-written/optimized f'd-up lexer with an oedipus_lex
generated lexer. This makes it roughly 40-50% faster.
* 30 minor enhancements:
* 2.0: Added support for a.b c() do d end.e do |f| g end
* 2.0: Added support for a.b c() do d end.e f do |g| h end
* Added -s flag to ruby_parse_extract_error to output timings.
* Added RubyLexer #command_state and #last_state to deal with oedipus_lex differences.
* Added String#lineno and #lineno= because I'm a bad bad person.
* Added a bunch of RubyLexer scanning methods: beginning_of_line?, check, scan, etc.
* Added a bunch of process_* methods extracted from old yylex. process_amper, etc.
* Added lib/.document to save my laptop's battery from pain and suffering
* Adjust lineno when we lex a bunch of blank lines.
* Attach lineno to tIDENTIFIER values (strings, ugh)
* Cleaned up and re-ordered node_assign to be faster (ordered by actual occurrance).
* Extend RubyParserStuff#gettable to set the lineno if it comes in with the id.
* Extended RubyParserStuff#new_case to take line number.
* Finally dropped RPStringScanner's BS #current_line.
* Finally dropped RPStringScanner's BS line number calculation (lineno).
* Implemented Sexp#add_all since we now have a test case for it.
* Removed :call case of node_assign. I don't think it is possible.
* Removed RubyLexer #extra_lines_added. No longer used. Complex heredoc lineno's possible screwed up.
* Removed RubyLexer#parse_number. Handled by oedipus_lex.
* Removed RubyLexer#yacc_value now that next_token returns pairs.
* Removed RubyLexer's @src. Now taken care of by oedipus_lex.
* Removed RubyParser#advance. RubyParser#next_token takes care of everything now.
* Removed RubyParserExtras#arg_add. (presidentbeef! YAY!)
* Removed lib/gauntlet_rubyparser.rb. I just don't use it anymore. Too slow.
* RubyLexer#is_label_possible? doesn't need an arg
* RubyLexer#process_token is now a normal oedipal lexer method.
* RubyParser#next_token now expects RubyLexer#next_token to return a pair (type, val).
* TRYING a new scheme to figure out encodings... but I'm about to throw in the towel. I hate this stuff so much.
* Turned off oedipus_lex's automatic line counting. (pushing to oedipus_lex soon).
* Updated to oedipus_lex 2.1+.
* 7 bug fixes:
* 1.8: Properly parse `a (:b, :c, :d => :e)`. (presidentbeef)
* Fixed lexing symbol!= vs symbol!. Please use your spacebar. Think of the children.
* Fixed line for dstr spanning multiple lines via backslash. (presidentbeef)
* Fixed line numbers for odd cases with trailing whitespace. (presidentbeef)
* Fixed line numbers on ambiguous calls w/ gvar/ivar args. (presidentbeef)
* Max out unicode hex values to 2-4 or 2-6 chars or pack will overflow and puke.
* Removed ESC_RE from RubyLexer. Must have slipped through.