Re: Regarding tree traversal

[Mike Stump <mrs at apple dot com>]

On Feb 7, 2007, at 1:05 PM, Prabhanjan Kambadur wrote:
> I am trying to check if two types are equal

equal, what's that?  :-)  (That's a joke for the rest of the folks  
here.  See the CANONICAL types work that Doug did recently for some  
of the more recent email threads.)

> One of the types is a struct that is defined under the std  
> namescope. How do I search for a "node" that is a TYPE_DECL of the  
> structure that I want? I would like to search for the TYPE_DECL of  
> "struct foo" in the tree std_node.

This process is called lookup.  Glance around at routines like  
lookup_qualified_name,

Don't be afraid to fire up gdb under emacs, set a breakpoint in the  
parser for the construct you're interested in, run the sample  
testcase through it and watch what the compiler does.  It'd take you  
right there.