Hi all,
I'm working on an interface to a C lib.
There are two structs, Bar and Baz. BarPtr and BazPtr are pointers to
them, respectively.
Both are treated as O_OBJECT, because they have special cleanup
functions which will be conveniently placed in the DESTROY.
here is the snippet to describe my problem.
MODULE = Foo::Bar PACKAGE = Foo::Bar
BarPtr
new(CLASS, file)
blah blah blah...
BazPtr
result_of_comp(self, obj)
BarPtr self
BazPtr obj
CODE:
RETVAL = get_the_result(self, obj);
OUTPUT:
RETVAL
MODULE = Foo::Bar PACKAGE = Foo::Baz
BazPtr
new(CLASS, file)
blah blah blah...
The expected usage is:
$a = new BarPtr($file_a);
$b = new BazPtr($file_b);
$res = $a->result_of_comp($b);
where $res is a BazPtr object.
But the .xs won't compile because result_of_comp() will follow the
typemap rule by doing this:
sv_setref_pv( ST(0), CLASS, (void*)RETVAL);
prior to returning the result value, and CLASS is not defined anywhere.
My solution is to add:
PREINIT:
char * CLASS = "Foo::Baz";
But I'm not sure whether this is the best practice.
What is the recommended way to overcome this problem?
rgds,
Edwin.
