Forum: Ruby RedParse 0.8.2 Released

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Caleb C. (Guest)
on 2009-05-22 20:08
(Received via mailing list)
RedParse version 0.8.2 has been released!

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RedParse is a ruby parser written in pure ruby. Instead of YACC or
ANTLR, it's parse tool is a home-brewed "compiler-interpreter".
RedParse can correctly parse in excess of 99.5% of existing ruby files.
The RedParse rule set is about a quarter the size of MRI's YACC-based
parser, and the parse tree format is much prettier than the nests of
emitted by parse_tree or ruby_parser. (RedParse trees are both object-
oriented and a much closer reflection of the actual structure of the


### 0.8.2 / 2009-04-21
* 14 Minor Enhancements:
  * should be no tokens left in Node tree now
  * lots of code trying to make things faster (no luck so far)
  * declare types and parameters of variation of all inputs
  * to_parsetree now outputs 1.8.6 (new default) as well as 1.8.7 tree
  * #parsetree takes a session arg instead of thread-local variables
  * reduce number of warnings/noise in test output
  * created #to_parsetree_and_warnings: returns warnings along with a
  * (for now, no warnings are ever emitted, tho)
  * some utilities for working with node trees
  * split off rescue operator and begin..end from ParenedNode
  * made a VarNode to replace VarNameToken in node trees
  * Reg::Repeat#subregs was missing, had to hack one up
  * Reg::LookBack/LookAhead#subregs were missing too
  * unparse now tracks lines in the original src
  * beginnings of support for 1.9 syntax

* 10 Bugfixes:
  * don't panic if rubygems not available
  * @lvalue is not useful to clients, so ignore it when comparing trees
  * many improvements to unparser; most expressions now unparse
  * rescue and friends now work in modules, classes and metaclasses
  * word array splitter is perfect now
  * comma and unary star now have right precedence wrt = in all cases
  * fixed miscellaneous minor misparsings
  * some of the remaining ParseTree compatibility bugs removed
  * string contents are now always left unaltered in Node tree output
  * (so escape translation has to be done later, when Nodes are used)
  * #to_parsetree of an empty source text should be happier now

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