/usr/include/mapbox/variant_visitor.hpp is in libmapbox-variant-dev 1.1.5-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 | #ifndef MAPBOX_UTIL_VARIANT_VISITOR_HPP
#define MAPBOX_UTIL_VARIANT_VISITOR_HPP
namespace mapbox {
namespace util {
template <typename... Fns>
struct visitor;
template <typename Fn>
struct visitor<Fn> : Fn
{
using type = Fn;
using Fn::operator();
visitor(Fn fn) : Fn(fn) {}
};
template <typename Fn, typename... Fns>
struct visitor<Fn, Fns...> : Fn, visitor<Fns...>
{
using type = visitor;
using Fn::operator();
using visitor<Fns...>::operator();
visitor(Fn fn, Fns... fns) : Fn(fn), visitor<Fns...>(fns...) {}
};
template <typename... Fns>
visitor<Fns...> make_visitor(Fns... fns)
{
return visitor<Fns...>(fns...);
}
} // namespace util
} // namespace mapbox
#endif // MAPBOX_UTIL_VARIANT_VISITOR_HPP
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