[pstricks] \overcurvearrow

[Eduardo]

Hi, 

I'm looking for a command like \overline{ABC} but for extensible 
curve arrows instead: \overcurvearrow[<opt>]{AB}, where opt 
could be: l (left arrow), r (right arrow), lr or rl (both l and r arrows), 
and * (no arrow at all).

I've found \wideparen in both yhmath.sty and mathabx.sty 
for the * option. 

Is it possible to get this kind of command with Pstricks?
I came close using:
\Rnode{A}{AB}\nccircle[nodesep=5pt]{->}{A}{1.5ex} 
but not in a satisfactory way. 

Thanks in advance,

Eduardo.