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feat: use push_back instead of resize
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toml/get.hpp
61
toml/get.hpp
@ -198,24 +198,24 @@ get(const basic_value<C, M, V>& v)
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// ============================================================================
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// forward declaration to use this recursively. ignore this and go ahead.
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// array-like type with resize(N) method
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// array-like type with push_back(value) method
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template<typename T, typename C,
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template<typename ...> class M, template<typename ...> class V>
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detail::enable_if_t<detail::conjunction<
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detail::is_container<T>, // T is container
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detail::has_resize_method<T>, // T::resize(N) works
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detail::negation< // but not toml::array
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detail::is_container<T>, // T is a container
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detail::has_push_back_method<T>, // T::push_back(value) works
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detail::negation< // but not toml::array
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detail::is_exact_toml_type<T, basic_value<C, M, V>>>
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>::value, T>
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get(const basic_value<C, M, V>&);
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// array-like type with resize(N) method
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// array-like type without push_back(value) method
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template<typename T, typename C,
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template<typename ...> class M, template<typename ...> class V>
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detail::enable_if_t<detail::conjunction<
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detail::is_container<T>, // T is container
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detail::negation<detail::has_resize_method<T>>, // no T::resize() exists
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detail::negation< // not toml::array
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detail::is_container<T>, // T is a container
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detail::negation<detail::has_push_back_method<T>>, // w/o push_back(...)
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detail::negation< // not toml::array
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detail::is_exact_toml_type<T, basic_value<C, M, V>>>
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>::value, T>
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get(const basic_value<C, M, V>&);
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@ -274,31 +274,54 @@ get(const basic_value<C, M, V>&);
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template<typename T, typename C,
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template<typename ...> class M, template<typename ...> class V>
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detail::enable_if_t<detail::conjunction<
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detail::is_container<T>, // T is container
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detail::has_resize_method<T>, // T::resize(N) works
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detail::negation< // but not toml::array
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detail::is_container<T>, // T is a container
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detail::has_push_back_method<T>, // container.push_back(elem) works
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detail::negation< // but not toml::array
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detail::is_exact_toml_type<T, basic_value<C, M, V>>>
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>::value, T>
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get(const basic_value<C, M, V>& v)
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{
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using value_type = typename T::value_type;
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const auto& ar = v.as_array();
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const auto& ary = v.as_array();
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T container;
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container.resize(ar.size());
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std::transform(ar.cbegin(), ar.cend(), container.begin(),
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[](const value& x){return ::toml::get<value_type>(x);});
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try_reserve(container, ary.size());
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for(const auto& elem : ary)
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{
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container.push_back(get<value_type>(elem));
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}
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return container;
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}
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// ============================================================================
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// array-like types; but does not have resize(); most likely std::array.
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// std::forward_list does not have push_back, insert, or emplace.
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// It has insert_after, emplace_after, push_front.
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template<typename T, typename C,
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template<typename ...> class M, template<typename ...> class V>
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detail::enable_if_t<detail::is_std_forward_list<T>::value, T>
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get(const basic_value<C, M, V>& v)
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{
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using value_type = typename T::value_type;
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T container;
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for(const auto& elem : v.as_array())
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{
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container.push_front(get<value_type>(elem));
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}
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container.reverse();
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return container;
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}
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// ============================================================================
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// array-like types, without push_back(). most likely [std|boost]::array.
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template<typename T, typename C,
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template<typename ...> class M, template<typename ...> class V>
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detail::enable_if_t<detail::conjunction<
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detail::is_container<T>, // T is container
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detail::negation<detail::has_resize_method<T>>, // no T::resize() exists
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detail::negation< // but not toml::array
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detail::is_container<T>, // T is a container
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detail::negation<detail::has_push_back_method<T>>, // w/o push_back
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detail::negation< // T is not toml::array
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detail::is_exact_toml_type<T, basic_value<C, M, V>>>
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>::value, T>
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get(const basic_value<C, M, V>& v)
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