I have a string something like this 
$abc = abc,xyz,{1,2,3,4},18-90-89,{{1,2},{5,6,7,8}},yts

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I want to split this into tokens stored in an array(say @elems) such as 
$elems[0] = abc
$elems[1] = xyz
$elems[2] = {1,2,3,4}
$elems[3] = 18-90-89
$elems[4] = {{1,2},{5,6,7,8}}
and so on.

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The rules are
1."Anything inside a parenthesis is a separate token even though it might contain the general delimiter comma (,)"
2."Nesting of parenthesis is possible"
3."no assumption can be made about the data i.e. it is a general mix of alphanumeric characters"

A friend of mine told that this is beyond the scope of regexp and this is only possible using Parse::RecDescent module as this problem is similar to token parsing by the compiler.

Dear monks, please help me write perl code to achieve this effect either through a regex or by use of any module such as Parse::RecDescent.

Thanks in advance!
Karthik

Edited by Chady -- added formatting

In reply to urgent perl regexp help needed by karthikpa

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