mirror of
https://github.com/bolero-MURAKAMI/Sprout.git
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74 lines
2.3 KiB
C++
74 lines
2.3 KiB
C++
#ifndef SPROUT_STRING_MAKE_STRING_HPP
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#define SPROUT_STRING_MAKE_STRING_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/index_tuple.hpp>
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#include <sprout/array.hpp>
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#include <sprout/string/char_traits.hpp>
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#include <sprout/string/string.hpp>
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#include <sprout/utility/forward.hpp>
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namespace sprout {
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//
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// make_string
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//
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namespace detail {
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template<typename T, std::size_t N, sprout::index_t... Indexes>
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inline SPROUT_CONSTEXPR sprout::basic_string<T, N - 1> make_string_impl_1(
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sprout::array<T, N> const& arr,
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std::size_t n,
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sprout::index_tuple<Indexes...>
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)
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{
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return sprout::basic_string<T, N - 1>{{(Indexes < n ? arr[Indexes] : T())...}, n};
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}
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template<typename T, std::size_t N, sprout::index_t... Indexes>
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inline SPROUT_CONSTEXPR sprout::basic_string<T, N - 1> make_string_impl(
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sprout::array<T, N> const& arr,
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sprout::index_tuple<Indexes...>
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)
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{
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return sprout::detail::make_string_impl_1(
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arr,
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sprout::char_traits<T>::length(arr.begin()),
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sprout::index_tuple<Indexes...>()
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);
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}
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} // namespace detail
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template<typename T, typename... Types>
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inline SPROUT_CONSTEXPR sprout::basic_string<typename std::decay<T>::type, 1 + sizeof...(Types)>
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make_string(T&& t, Types&&... args) {
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return sprout::detail::make_string_impl(
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sprout::make_array<typename std::decay<T>::type>(
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sprout::forward<T>(t),
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sprout::forward<Types>(args)...,
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typename std::decay<T>::type()
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),
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typename sprout::index_range<0, 1 + sizeof...(Types)>::type()
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);
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}
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//
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// make_string_as
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//
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template<typename T>
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inline SPROUT_CONSTEXPR sprout::basic_string<typename std::decay<T>::type, 0>
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make_string_as() {
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return sprout::basic_string<typename std::decay<T>::type, 0>{};
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}
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template<typename T, typename... Types>
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inline SPROUT_CONSTEXPR sprout::basic_string<typename std::decay<T>::type, sizeof...(Types)>
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make_string_as(Types&&... args) {
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return sprout::detail::make_string_impl(
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sprout::make_array<typename std::decay<T>::type>(
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sprout::forward<Types>(args)...,
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typename std::decay<T>::type()
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),
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typename sprout::index_range<0, 1 + sizeof...(Types)>::type()
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);
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}
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} // namespace sprout
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#endif // #ifndef SPROUT_STRING_MAKE_STRING_HPP
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