Tokenize a String [duplicate]

Question

Write a program or function that takes in a string through STDIN or function parameters, tokenizes it by parenthesis, and outputs the tokens on different lines. If the string contains a parentheses error, the program/function must output a falsey value or error message.

Examples:

Input: abc(def)ghi

Output:

abc   ghi
   def

Input: abc(def(ghi))jklm(n)op((q))rs

Output:

abc      jklm op rs
   def       n
      ghi       q

Input: blah(blah)(blah

Output:

Error

Notes:

• The falsey value or error message must be generated by program, and the program must terminate successfully. A built in error message due to a crash does not count.
• This is code golf. I will accept the shortest answer in bytes one month from today (July 30th).
• No standard loopholes.

Answer 1

Cobra - 238

def f(s='')
    x,y,l=0,0,for n in (r=s.count('('))get' '.repeat(s.length-2*r)
    try
        for c in s,branch c
            on c'(',y+=1
            on c')',y-=1
            else,l[y]=l[y][:x]+'[c]'+l[y][x+=1:]
        assert y==0
    catch
        print'Error'
    success,print l.join('\n')