/usr/include/mapbox/variant_io.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 39 40 41 42 43 44 45 | #ifndef MAPBOX_UTIL_VARIANT_IO_HPP
#define MAPBOX_UTIL_VARIANT_IO_HPP
#include <iosfwd>
#include <mapbox/variant.hpp>
namespace mapbox {
namespace util {
namespace detail {
// operator<< helper
template <typename Out>
class printer
{
public:
explicit printer(Out& out)
: out_(out) {}
printer& operator=(printer const&) = delete;
// visitor
template <typename T>
void operator()(T const& operand) const
{
out_ << operand;
}
private:
Out& out_;
};
}
// operator<<
template <typename CharT, typename Traits, typename... Types>
VARIANT_INLINE std::basic_ostream<CharT, Traits>&
operator<<(std::basic_ostream<CharT, Traits>& out, variant<Types...> const& rhs)
{
detail::printer<std::basic_ostream<CharT, Traits>> visitor(out);
apply_visitor(visitor, rhs);
return out;
}
} // namespace util
} // namespace mapbox
#endif // MAPBOX_UTIL_VARIANT_IO_HPP
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