Sprout/sprout/weed/traits/expr/terminal_of.hpp

59 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/type_traits/identity.hpp>
#include <sprout/type_traits/remove_shallow_cvref.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/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 std::remove_reference<Arg>::type
>::value
>::type
>
: public sprout::identity<
sprout::weed::expr<
sprout::weed::tag::terminal,
typename sprout::remove_shallow_cvref<Arg>::type
>
>
{};
template<typename Arg>
struct terminal_of<
Arg,
typename std::enable_if<
sprout::weed::traits::is_c_str<
typename std::remove_reference<Arg>::type
>::value
>::type
>
: public sprout::identity<
sprout::weed::expr<
sprout::weed::tag::terminal,
typename sprout::weed::detail::c_str_as_string<
typename std::remove_reference<Arg>::type
>::type
>
>
{};
} // namespace traits
} // namespace weed
} // namespace sprout
#endif // #ifndef SPROUT_WEED_TRAITS_EXPR_TERMINAL_OF_HPP