From: John Micheal <zul_haq@...>
Date: 2008-06-09T20:09:55+09:00
Subject: AST for ruby code

Hi!
I want AST for the following code as it is given below. I have install
ruby_parser 1.0 on my system. We are able to parse string using
"RubyParser.new.parse("1+1 = 2")" and the result is " s(:str, "1+1=2")".
But how I can parse the full source file(given below)?

Further, whenever I try to parse the string containing class or def in
it, it gives error (it means, it is parsing C code not ruby) I have also
attached the screenshot for this problem. Please also guide us in this
mater.


Ruby Code:
....................readfile.rb

class TestClass

     def method1(a,b)
        sum = a + b
        puts sum
     end

     def method2(*c)
        l = c.length
        puts l
     end
end

Desired AST Tree:
....................

s(:class, :TestClass, s(:const, :Object), s(:defn, :method1, s(:scope,
s(:block, s(:args, :a, :b), s(:lasgn, :sum, s(:call, s(:lvar, :a), :+,
s(:array, s(:lvar, :b)))), s(:fcall, :puts, s(:array, s(:lvar,
:sum)))))), s(:defn, :method2, s(:scope, s(:block, s(:args, :"*c"),
s(:lasgn, :l, s(:call, s(:lvar, :c), :length)), s(:fcall, :puts,
s(:array, s(:lvar, :l)))))))

Attachments:
http://www.ruby-forum.com/attachment/2131/error.GIF

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