[cfe-dev] Back-navigation of the Syntax Tree!

[Simone Pellegrini]

Dear all,
I need to make some kind of manipulation of a syntax tree in Clang.

Actually what I want to do is just move some statement (mainly the 
entire line... until the ';' which enclose a statement I want to move). 
Apparently this kind of work is more complex than what I thought.

At the beginning I perform a simple data-flow analysis to determine the 
positions where the statement can be placed (and that's is quite 
trivial). It can be easily done by using a visitor of the AST, but for 
example when I found, let's say a DeclRefExpr I'd like to have the 
possibility to access to the statement that encloses the var reference.
Practically, what I need is the possibility from a statement to access 
to the PARENT! I know that I can manually save a reference to the parent 
node before entering into a node and that will solve my problem but it 
is ugly! :) Is this possible with the current API to access the parent 
of a node? I searched a lot and there is no way to get this information.

regards Simone