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https://github.com/bolero-MURAKAMI/Sprout.git
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53 lines
1.9 KiB
C++
53 lines
1.9 KiB
C++
#ifndef SPROUT_WEED_ATTR_CNV_TIMES_HPP
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#define SPROUT_WEED_ATTR_CNV_TIMES_HPP
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#include <cstddef>
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#include <type_traits>
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#include <sprout/config.hpp>
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#include <sprout/array/array.hpp>
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#include <sprout/container/make.hpp>
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#include <sprout/algorithm/string/join.hpp>
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#include <sprout/weed/unused.hpp>
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#include <sprout/weed/traits/type/is_container.hpp>
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#include <sprout/weed/traits/type/is_unused.hpp>
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#include <sprout/weed/attr_cnv/result_of/times.hpp>
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namespace sprout {
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namespace weed {
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namespace attr_cnv {
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//
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// times
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//
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// times<N>(container<V, K>) -> container<V, N * K>
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template<std::size_t Limit, typename T, typename... Args>
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static SPROUT_CONSTEXPR typename std::enable_if<
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sprout::weed::traits::is_container<T>::value,
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typename sprout::weed::attr_cnv::result_of::times<Limit, T>::type
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>::type times(Args const&... args) {
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return sprout::algorithm::join(
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sprout::make<sprout::array<T, Limit> >(args...)
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);
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}
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// times<N>(V) -> container<V, N>
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template<std::size_t Limit, typename T, typename... Args>
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static SPROUT_CONSTEXPR typename std::enable_if<
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!sprout::weed::traits::is_container<T>::value
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&& !sprout::weed::traits::is_unused<T>::value,
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typename sprout::weed::attr_cnv::result_of::times<Limit, T>::type
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>::type times(Args const&... args) {
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typedef typename sprout::weed::attr_cnv::result_of::times<Limit, T>::type type;
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return sprout::make<type>(args...);
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}
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// times<N>(unused) -> unused
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template<std::size_t Limit, typename T, typename... Args>
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static SPROUT_CONSTEXPR typename std::enable_if<
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sprout::weed::traits::is_unused<T>::value,
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typename sprout::weed::attr_cnv::result_of::times<Limit, T>::type
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>::type times(Args const&... args) {
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return sprout::weed::unused();
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}
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} // namespace attr_cnv
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} // namespace weed
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} // namespace sprout
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#endif // #ifndef SPROUT_WEED_ATTR_CNV_TIMES_HPP
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