Before we release any of the C++ stuff into the wild, we need to nail
down how to declare namespaces. There are two contenders:
cdef extern from "foo.h" namespace Foo.Bar:
int f(int)
cdef extern from "foo.h" namespace "Foo::Bar":
int f(int)
Now one thing I've realized since starting to look at this is
namespaces can be more than just dotted Python identifiers, e.g. one
has "std::vector<T>::iterator." Ideally, this will be handled more
cleanly once we have cpp class nesting, but there's no way to declare
it now (without resorting to the strings hacking that one does for C++
currently). I'm leaning towards the latter.
Also, I've been thinking about namespace conflicts. Suppose one has
A::B::x and Y::Z::x, then we don't provide a way to use both (short of
resting to string cnames). We could allow
cdef extern from "..." namespace A.B as X:
int x(int)
or
cdef extern from "..." namespace "A::B" as X:
int x(int)
print X.x(5)
Would the former with no as clause automatically inject A.B (I'd
rather not)? This is a non-issue if we go with the latter syntax.
- Robert
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