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Merge branch 'develop' of https://github.com/nlohmann/json into std_bytes

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Niels Lohmann
2020-12-29 14:37:46 +01:00
parent 5dd06714b1 ff3863dc1d
commit 98b2152452
3 changed files with 84 additions and 17 deletions
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35
include/nlohmann/detail/input/input_adapters.hpp
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@@ -371,14 +371,35 @@ typename iterator_input_adapter_factory<IteratorType>::adapter_type input_adapte
}
// Convenience shorthand from container to iterator
template<typename ContainerType>
auto input_adapter(const ContainerType& container) -> decltype(input_adapter(begin(container), end(container)))
{
// Enable ADL
using std::begin;
using std::end;
// Enables ADL on begin(container) and end(container)
// Encloses the using declarations in namespace for not to leak them to outside scope
return input_adapter(begin(container), end(container));
namespace container_input_adapter_factory_impl {
using std::begin;
using std::end;
template<typename ContainerType, typename Enable = void>
struct container_input_adapter_factory {};
template<typename ContainerType>
struct container_input_adapter_factory< ContainerType,
void_t<decltype(begin(std::declval<ContainerType>()), end(std::declval<ContainerType>()))> >
{
using adapter_type = decltype(input_adapter(begin(std::declval<ContainerType>()), end(std::declval<ContainerType>())));
static adapter_type create(const ContainerType& container)
{
return input_adapter(begin(container), end(container));
}
};
}
template<typename ContainerType>
typename container_input_adapter_factory_impl::container_input_adapter_factory<ContainerType>::adapter_type input_adapter(const ContainerType& container)
{
return container_input_adapter_factory_impl::container_input_adapter_factory<ContainerType>::create(container);
}
// Special cases with fast paths