On 10/10/12, Xinliang David Li <davi...@google.com> wrote:
> In a different thread, I proposed the following alternative to 'try_xxx':
>
> template<typename T> T* symbol::cast_to(symbol* p) {
> if (p->is<T>())
> return static_cast<T*>(p);
> return 0;
> }
>
> cast:
>
> template<typename T> T& symbol:as(symbol* p) {
> assert(p->is<T>())
> return static_cast<T&>(*p);
>
> }
My concern here was never the technical feasibility, nor the
desirability of having the facility for generic code, but the amount
of the amount of typing in non-generic contexts. That is
if (cgraph_node *q = p->try_function ())
versus
if (cgraph_node *q = p->cast_to <cgraph_node *> ())
I thought the latter would generate objections. Does anyone object
to the extra typing?
If not, I can make that change.
--
Lawrence Crowl
