Sprout/sprout/weed/traits/expr/terminal_of.hpp
2012-05-31 22:28:58 +09:00

56 lines
1.5 KiB
C++

#ifndef SPROUT_WEED_TRAITS_EXPR_TERMINAL_OF_HPP
#define SPROUT_WEED_TRAITS_EXPR_TERMINAL_OF_HPP
#include <type_traits>
#include <sprout/config.hpp>
#include <sprout/weed/expr/expr_fwd.hpp>
#include <sprout/weed/expr/tag.hpp>
#include <sprout/weed/traits/type/is_c_str.hpp>
#include <sprout/weed/detail/uncvref.hpp>
#include <sprout/weed/detail/c_str_as_string.hpp>
namespace sprout {
namespace weed {
namespace traits {
//
// terminal_of
//
template<typename Arg, typename = void>
struct terminal_of;
template<typename Arg>
struct terminal_of<
Arg,
typename std::enable_if<
!sprout::weed::traits::is_c_str<
typename sprout::weed::detail::uncvref<Arg>::type
>::value
>::type
> {
public:
typedef sprout::weed::expr<
sprout::weed::tag::terminal,
typename sprout::weed::detail::uncvref<Arg>::type
> type;
};
template<typename Arg>
struct terminal_of<
Arg,
typename std::enable_if<
sprout::weed::traits::is_c_str<
typename sprout::weed::detail::uncvref<Arg>::type
>::value
>::type
> {
public:
typedef sprout::weed::expr<
sprout::weed::tag::terminal,
typename sprout::weed::detail::c_str_as_string<
typename sprout::weed::detail::uncvref<Arg>::type
>::type
> type;
};
} // namespace traits
} // namespace weed
} // namespace sprout
#endif // #ifndef SPROUT_WEED_TRAITS_EXPR_TERMINAL_OF_HPP