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feat: remove resize and add try_reserve

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ToruNiina
2020-03-27 18:05:31 +09:00
parent 5212992f05
commit 9b52dc0131
1 changed files with 12 additions and 17 deletions
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29
toml/utility.hpp
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@@ -36,30 +36,25 @@ inline std::unique_ptr<T> make_unique(Ts&& ... args)
namespace detail namespace detail
{ {
template<typename Container>
template<typename T> void try_reserve_impl(Container& container, std::size_t N, std::true_type)
inline void resize_impl(T& container, std::size_t N, std::true_type)
{ {
container.resize(N); container.reserve(N);
return ; return;
} }
template<typename Container>
template<typename T> void try_reserve_impl(Container&, std::size_t, std::false_type) noexcept
inline void resize_impl(T& container, std::size_t N, std::false_type)
{ {
if(container.size() >= N) {return;} return;
throw std::invalid_argument("not resizable type");
} }
} // detail } // detail
template<typename T> template<typename Container>
inline void resize(T& container, std::size_t N) void try_reserve(Container& container, std::size_t N)
{ {
if(container.size() == N) {return;} if(N <= container.size()) {return;}
detail::try_reserve_impl(container, N, detail::has_reserve_method<Container>{});
return detail::resize_impl(container, N, detail::has_resize_method<T>()); return;
} }
namespace detail namespace detail