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sprout/weed/context/parse_context/operator/minus.hpp 追加

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sprout/weed/context/parse_context/operator/negate.hpp 追加
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bolero-MURAKAMI 2011-11-14 19:45:59 +09:00
parent 005f8a9a87
commit a7698fa6e9
13 changed files with 291 additions and 1 deletions
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43
sprout/weed/operator/minus.hpp Normal file
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#ifndef SPROUT_WEED_OPERATOR_MINUS_HPP
#define SPROUT_WEED_OPERATOR_MINUS_HPP
#include <type_traits>
#include <sprout/config.hpp>
#include <sprout/utility/forward.hpp>
#include <sprout/weed/expr/tag.hpp>
#include <sprout/weed/expr/make_expr.hpp>
#include <sprout/weed/traits/expr/expr_of.hpp>
#include <sprout/weed/traits/parser/is_parser.hpp>
#include <sprout/weed/detail/uncvref.hpp>
namespace sprout {
namespace weed {
//
// operator-
//
template<
typename Arg1,
typename Arg2,
typename = typename std::enable_if<
sprout::weed::traits::is_parser<
typename sprout::weed::detail::uncvref<Arg1>::type
>::value
&& sprout::weed::traits::is_parser<
typename sprout::weed::detail::uncvref<Arg2>::type
>::value
>::type
>
SPROUT_CONSTEXPR inline typename sprout::weed::traits::expr_of<
sprout::weed::tag::minus,
Arg1,
Arg2
>::type operator-(Arg1&& arg1, Arg2&& arg2) {
return sprout::weed::make_expr<sprout::weed::tag::minus>(
sprout::forward<Arg1>(arg1),
sprout::forward<Arg2>(arg2)
);
}
} // namespace weed
} // namespace sprout
#endif // #ifndef SPROUT_WEED_OPERATOR_MINUS_HPP