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This post originated from an RSS feed registered with Ruby Buzz
by Ryan Davis.
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Original Post: ParseTree 1.5.0 Released
Feed Title: Polishing Ruby
Feed URL: http://blog.zenspider.com/index.rdf
Feed Description: Musings on Ruby and the Ruby Community...
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ParseTree version 1.5.0 has been released!
sudo gem install ParseTree
DESCRIPTION:
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
end
return 0
end
becomes:
[:defn,
:conditional1,
[:scope,
[:block,
[:args, :arg1],
[:if,
[:call, [:lvar, :arg1], :==, [:array, [:lit, 0]]],
[:return, [:lit, 1]],
nil],
[:return, [:lit, 0]]]]]
FEATURES/PROBLEMS:
- Uses RubyInline, so it just drops in.
- Includes SexpProcessor and CompositeSexpProcessor.
- Allows you to write very clean filters.
- Includes parsetreeshow, which lets you quickly snoop code.
- echo "1+1" | parsetreeshow -f for quick snippet output.
- Includes parsetreeabc, which lets you get abc metrics on code.
- abc metrics = numbers of assignments, branches, and calls.
- whitespace independent metric for method complexity.
- Includes parsetreedeps, 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/
http://www.zenspider.com/ZSS/Products/ParseTree/
Changes
Read: ParseTree 1.5.0 Released