[ANN] ruby_parser 3.0.0.a5 Released

ruby-talk
1

ruby_parser version 3.0.0.a5 has been released!

* rdoc: <http://docs.seattlerb.org/ruby_parser>
* bugs: <https://github.com/seattlerb/ruby_parser/issues>
* home: <https://github.com/seattlerb/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)
    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.a5 / 2012-07-31

* 5 bug fixes:

  * 1.9: Fix construction of 'f(:x, y: nil,)' w/ trailing comma.
  * 1.9: cleaned up lexing exit lex_state handling. Fixes bug parsing 'if f :x; end'
  * 1.9: fixed building of right-leaning masgns: 'f { |a, (b, c)| }'
  * 1.9: fixed lexing 'when *splat'
  * 1.9: fixed lexing of regexps in whens