From: Alexander Nasonov (alnsn_at_[hidden])
Date: 2007-04-04 18:11:25
Steven Watanabe wrote:
> Alexander Nasonov <alnsn <at> yandex.ru> writes:
>
> >
> > Steven Watanabe wrote:
> > > I can make it work for msvc
> > How?
> >
>
> #include <boost/config.hpp>
> ...
I'm very impressed how you wrote it off the top of your head :->
But it's definitely too much magic. Though, it made me think of
another magic: study alloca implementations and replace a global
variable with something like
BOOST_SCOPE_EXIT( (hello)(world) ) // line 1
/* Expands to:
struct args_line1 { std::string &hello, &world; } args_line1 = { hello, world };
void** saved_args = (void**)aloca(sizeof(void*));
*saved_args = &args_line1;
struct scope_exit_line1 {
void* m_args;
~scope_exit() {
struct args_line1* p = (struct args_line1*)m_args;
doit(p->hello, p->world);
}
static void doit(std::string& hello, std::string& world)
*/
{
// scope(exit) code
}
BOOST_SCOPE_EXIT_END // line 5
/*
} scope_exit_line5 = { *static_cast<void**>(last_alloca_result()) };
*/
The key here is get_alloca_result that returns a value returned by last
alloca call.
-- Alexander Nasonov http://nasonov.blogspot.com When you`re comfortable with someone you love, the silence is the best. -- Britney Spears -- This quote is generated by: /usr/pkg/bin/curl -L http://tinyurl.com/veusy \ | sed -e 's/^document\.write(.//' -e 's/.);$/ --/' \ -e 's/<[^>]*>//g' -e 's/^More quotes from //' \ | fmt | tee ~/.signature-quote