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#ifndef MAPBOX_UTIL_VARIANT_IO_HPP
#define MAPBOX_UTIL_VARIANT_IO_HPP
#include "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;
}
}}
#endif //MAPBOX_UTIL_VARIANT_IO_HPP
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