Help with format checking for accepting parameters equivalent to "tree"

[Kaveh R. Ghazi]

 > From: "Joseph S. Myers" <jsm28@cam.ac.uk>
 > 
 > On Thu, 19 Jun 2003, Kaveh R. Ghazi wrote:
 > 
 > > The first thought is I'm registering the wrong type, in the sense that
 > > I shouldn't register "tree" but instead I should register a "union
 > > tree_node *", but I can't figure out how to get the "type" out of an
 > 
 > You should register "union tree_node": the tables separately store the
 > target type and the number of levels of indirection.

So can I assume you're confirming that if I do this the format code
will handle the four cases I included in my testcase?  If so, great.

Regarding levels of indirection, I am aware of the "pointer_count"
field, if that's what you mean.

What I can't figure out is how to obtain a "TREE_TYPE" from the result
of calling maybe_get_identifier ("tree_node") that is suitable for
stuffing into the format data table.  I'm sure it's just a couple of
lines of tree twiddling, but I can't figure out the appropriate magic
invocation.

Can you shed some light on that?

		Thanks,
		--Kaveh
--
Kaveh R. Ghazi			ghazi@caip.rutgers.edu