[Boost-users] [Proto] Splitting AST

Subject: [Boost-users] [Proto] Splitting AST
From: Joel Falcou (joel.falcou_at_[hidden])
Date: 2009-03-02 12:55:04

Let's say I want to take an expression involving operators +,-,*,/ and a 
function split.

What I want to do is writing a transform taking such an expression and 
returning a fusion::vector or list  (I guess) of expressions containing 
all sub-expressions of the original AST only separated on each insatcne 
of a split call.

E.g :

Xpr = a+b+split( c*d + split(e-f));
is turned into

Xprs = [ a+b+placeholder<1>, c*d+placeholder<2>, e-f];

I guess I should use the State/Data parameters of the transform but i 
can't get the thing right. Any hints on how to tackle this without 
losing hairs ?

-- 
___________________________________________
Joel Falcou - Assistant Professor
PARALL Team - LRI - Universite Paris Sud XI
Tel : [phone]