[cfe-dev] declRefExpr clang

[Mohammad Adil]

How can I get the CompundStmt or the Stmt for this expression? Is there any
way to move token by token forward from a SourceLocation?


On Fri, Nov 16, 2012 at 1:30 AM, Eli Friedman <eli.friedman at gmail.com>wrote:

> On Thu, Nov 15, 2012 at 12:00 PM, madil90 <madil90 at gmail.com> wrote:
> > Hi,
> >   I have a DeclRefExpr which tells me wherever a variable is used. I
> want to
> > find out the previous or the next ";" so that I can go to the start of
> the
> > command in which this variable was used e.g.
> >
> > int a,b;
> >
> > a = b + 3;
> >      | |
> >
> >    In this case the DeclRefExpr for b will start and end at the locations
> > shown. How can I find the previous ";" (in this case at the end of the
> line
> > int a,b;))
>
> There isn't any existing code to handle this, but it isn't too hard:
> find the CompoundStmt which contains the given expression, then get
> the end location of previous statement in that CompoundStmt.  (This is
> ignoring various edge cases, but that's the fundamental algorithm.)
> The ParentMap class might be useful for implementing this.
>
> -Eli
>



-- 
Mohammad Adil
LUMS SSE
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