🕷 software releases

by ryan davis


ParseTree 1.5.0 Released

Published 2006-09-24 @ 13:22

ParseTree version 1.5.0 has been released!

sudo gem install ParseTree


ParseTree is a C extension (using RubyInline) that extracts the parse tree for an entire class or a specific method and returns it as a s-expression (aka sexp) using ruby’s arrays, strings, symbols, and integers.

As an example:

  def conditional1(arg1)
    if arg1 == 0 then
      return 1
    return 0


      [:args, :arg1],
       [:call, [:lvar, :arg1], :==, [:array, [:lit, 0]]],
       [:return, [:lit, 1]],
      [:return, [:lit, 0]]]]]


  • Uses RubyInline, so it just drops in.
  • Includes SexpProcessor and CompositeSexpProcessor.
    • Allows you to write very clean filters.
  • Includes parse_tree_show, which lets you quickly snoop code.
    • echo “1+1” parse_tree_show -f for quick snippet output.
  • Includes parse_tree_abc, which lets you get abc metrics on code.
    • abc metrics = numbers of assignments, branches, and calls.
    • whitespace independent metric for method complexity.
  • Includes parse_tree_deps, which shows you basic class level dependencies.
  • Only works on methods in classes/modules, not arbitrary code.
  • Does not work on the core classes, as they are not ruby (yet).

    http://rubyforge.org/projects/parsetree/ https://www.zenspider.com/ZSS/Products/ParseTree/


  • 5 minor enhancements:
    • Added parse_tree_audit.
    • Added reporting of unsupported nodes that have processors.
    • YAY! class method support! generated as :”self.blah”
    • Add parse_tree_for_string.
    • Converted Rakefile+gemspec to Hoe-based Rakefile.
  • 6 bug fixes:
    • Did some preliminary work on 1.9 compatibility.
    • Fixed tests for some changes/clarifications.
    • Fixed resbody: should have nil exceptions list when no exception rescued.
    • Fixed op_asgn1 and op_asgn2.
    • Fixed incompatibility with new inline changes.
    • Fixed VALUE decl in parse_tree.rb
  • http://rubyforge.org/projects/parsetree/
  • https://www.zenspider.com/ZSS/Products/ParseTree/