Added Support for Structured Bindings
For further details, read https://github.com/nlohmann/json/issues/1388 and https://blog.tartanllama.xyz/structured-bindings/
This commit is contained in:
Pratik Chowdhury
parent
e73dfef6e5
commit
ebd3f45808
6 changed files with 337 additions and 248 deletions
1
.gitignore
vendored
1
.gitignore
vendored
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@ -22,3 +22,4 @@ benchmarks/files/numbers/*.json
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cmake-build-debug
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test/test-*
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/.vs
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@ -290,9 +290,9 @@ void to_json(BasicJsonType& j, typename BasicJsonType::object_t&& obj)
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template <
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typename BasicJsonType, typename T, std::size_t N,
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enable_if_t<not std::is_constructible<typename BasicJsonType::string_t,
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const T (&)[N]>::value,
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const T(&)[N]>::value,
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int> = 0 >
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void to_json(BasicJsonType& j, const T (&arr)[N])
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void to_json(BasicJsonType& j, const T(&arr)[N])
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{
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external_constructor<value_t::array>::construct(j, arr);
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}
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@ -300,21 +300,21 @@ void to_json(BasicJsonType& j, const T (&arr)[N])
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template<typename BasicJsonType, typename... Args>
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void to_json(BasicJsonType& j, const std::pair<Args...>& p)
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{
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j = {p.first, p.second};
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j = { p.first, p.second };
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}
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// for https://github.com/nlohmann/json/pull/1134
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template<typename BasicJsonType, typename T,
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enable_if_t<std::is_same<T, typename iteration_proxy<typename BasicJsonType::iterator>::iteration_proxy_internal>::value, int> = 0>
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template < typename BasicJsonType, typename T,
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enable_if_t<std::is_same<T, iteration_proxy_value<typename BasicJsonType::iterator>>::value, int> = 0>
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void to_json(BasicJsonType& j, const T& b)
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{
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j = {{b.key(), b.value()}};
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j = { {b.key(), b.value()} };
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}
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template<typename BasicJsonType, typename Tuple, std::size_t... Idx>
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void to_json_tuple_impl(BasicJsonType& j, const Tuple& t, index_sequence<Idx...> /*unused*/)
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{
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j = {std::get<Idx>(t)...};
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j = { std::get<Idx>(t)... };
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}
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template<typename BasicJsonType, typename... Args>
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@ -17,24 +17,21 @@ namespace detail
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{
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// forward declare, to be able to friend it later on
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template<typename IteratorType> class iteration_proxy;
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template<typename IteratorType> class iteration_proxy_value;
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/*!
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@brief a template for a bidirectional iterator for the @ref basic_json class
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This class implements a both iterators (iterator and const_iterator) for the
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@ref basic_json class.
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@note An iterator is called *initialized* when a pointer to a JSON value has
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been set (e.g., by a constructor or a copy assignment). If the iterator is
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default-constructed, it is *uninitialized* and most methods are undefined.
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**The library uses assertions to detect calls on uninitialized iterators.**
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@requirement The class satisfies the following concept requirements:
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-
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[BidirectionalIterator](https://en.cppreference.com/w/cpp/named_req/BidirectionalIterator):
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The iterator that can be moved can be moved in both directions (i.e.
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incremented and decremented).
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@since version 1.0.0, simplified in version 2.0.9, change to bidirectional
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iterators in version 3.0.0 (see https://github.com/nlohmann/json/issues/593)
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*/
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@ -45,6 +42,7 @@ class iter_impl
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friend iter_impl<typename std::conditional<std::is_const<BasicJsonType>::value, typename std::remove_const<BasicJsonType>::type, const BasicJsonType>::type>;
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friend BasicJsonType;
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friend iteration_proxy<iter_impl>;
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friend iteration_proxy_value<iter_impl>;
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using object_t = typename BasicJsonType::object_t;
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using array_t = typename BasicJsonType::array_t;
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@ -3,25 +3,22 @@
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#include <cstddef> // size_t
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#include <string> // string, to_string
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#include <iterator> // input_iterator_tag
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#include <tuple> // tuple_size, get, tuple_element
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#include <nlohmann/detail/value_t.hpp>
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#include <nlohmann/detail/meta/type_traits.hpp>
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namespace nlohmann
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{
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namespace detail
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{
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/// proxy class for the items() function
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template<typename IteratorType> class iteration_proxy
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template <typename IteratorType> class iteration_proxy_value
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{
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private:
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/// helper class for iteration
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class iteration_proxy_internal
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{
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public:
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using difference_type = std::ptrdiff_t;
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using value_type = iteration_proxy_internal;
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using pointer = iteration_proxy_internal*;
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using reference = iteration_proxy_internal&;
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using value_type = iteration_proxy_value;
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using pointer = value_type * ;
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using reference = value_type & ;
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using iterator_category = std::input_iterator_tag;
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private:
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@ -37,16 +34,16 @@ template<typename IteratorType> class iteration_proxy
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const std::string empty_str = "";
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public:
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explicit iteration_proxy_internal(IteratorType it) noexcept : anchor(it) {}
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explicit iteration_proxy_value(IteratorType it) noexcept : anchor(it) {}
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/// dereference operator (needed for range-based for)
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iteration_proxy_internal& operator*()
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iteration_proxy_value& operator*()
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{
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return *this;
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}
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/// increment operator (needed for range-based for)
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iteration_proxy_internal& operator++()
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iteration_proxy_value& operator++()
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{
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++anchor;
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++array_index;
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@ -55,13 +52,13 @@ template<typename IteratorType> class iteration_proxy
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}
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/// equality operator (needed for InputIterator)
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bool operator==(const iteration_proxy_internal& o) const noexcept
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bool operator==(const iteration_proxy_value& o) const noexcept
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{
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return anchor == o.anchor;
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}
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/// inequality operator (needed for range-based for)
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bool operator!=(const iteration_proxy_internal& o) const noexcept
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bool operator!=(const iteration_proxy_value& o) const noexcept
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{
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return anchor != o.anchor;
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}
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@ -99,8 +96,12 @@ template<typename IteratorType> class iteration_proxy
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{
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return anchor.value();
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}
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};
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};
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/// proxy class for the items() function
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template<typename IteratorType> class iteration_proxy
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{
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private:
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/// the container to iterate
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typename IteratorType::reference container;
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@ -110,16 +111,52 @@ template<typename IteratorType> class iteration_proxy
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: container(cont) {}
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/// return iterator begin (needed for range-based for)
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iteration_proxy_internal begin() noexcept
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iteration_proxy_value<IteratorType> begin() noexcept
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{
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return iteration_proxy_internal(container.begin());
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return iteration_proxy_value<IteratorType>(container.begin());
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}
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/// return iterator end (needed for range-based for)
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iteration_proxy_internal end() noexcept
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iteration_proxy_value<IteratorType> end() noexcept
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{
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return iteration_proxy_internal(container.end());
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return iteration_proxy_value<IteratorType>(container.end());
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}
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};
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// Structured Bindings Support
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// For further reference see https://blog.tartanllama.xyz/structured-bindings/
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// And see https://github.com/nlohmann/json/pull/1391
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template <std::size_t N, typename IteratorType, enable_if_t<N == 0, int> = 0>
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auto get(const nlohmann::detail::iteration_proxy_value<IteratorType>& i) -> decltype(i.key())
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{
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return i.key();
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}
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// Structured Bindings Support
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// For further reference see https://blog.tartanllama.xyz/structured-bindings/
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// And see https://github.com/nlohmann/json/pull/1391
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template <std::size_t N, typename IteratorType, enable_if_t<N == 1, int> = 0>
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auto get(const nlohmann::detail::iteration_proxy_value<IteratorType>& i) -> decltype(i.value())
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{
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return i.value();
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}
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} // namespace detail
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} // namespace nlohmann
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// The Addition to the STD Namespace is required to add
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// Structured Bindings Support to the iteration_proxy_value class
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// For further reference see https://blog.tartanllama.xyz/structured-bindings/
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// And see https://github.com/nlohmann/json/pull/1391
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namespace std
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{
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template <typename IteratorType>
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struct tuple_size<::nlohmann::detail::iteration_proxy_value<IteratorType>>
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: std::integral_constant<std::size_t, 2> {};
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template <std::size_t N, typename IteratorType>
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struct tuple_element <
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N, ::nlohmann::detail::iteration_proxy_value<IteratorType >>
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{
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using type = decltype(
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get<N>(std::declval <
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::nlohmann::detail::iteration_proxy_value<IteratorType >> ()));
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};
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}
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@ -1594,26 +1594,24 @@ constexpr const auto& from_json = detail::static_const<detail::from_json_fn>::va
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#include <cstddef> // size_t
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#include <string> // string, to_string
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#include <iterator> // input_iterator_tag
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#include <tuple> // tuple_size, get, tuple_element
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// #include <nlohmann/detail/value_t.hpp>
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// #include <nlohmann/detail/meta/type_traits.hpp>
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namespace nlohmann
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{
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namespace detail
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{
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/// proxy class for the items() function
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template<typename IteratorType> class iteration_proxy
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template <typename IteratorType> class iteration_proxy_value
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{
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private:
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/// helper class for iteration
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class iteration_proxy_internal
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{
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public:
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using difference_type = std::ptrdiff_t;
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using value_type = iteration_proxy_internal;
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using pointer = iteration_proxy_internal*;
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using reference = iteration_proxy_internal&;
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using value_type = iteration_proxy_value;
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using pointer = value_type * ;
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using reference = value_type & ;
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using iterator_category = std::input_iterator_tag;
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private:
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@ -1629,16 +1627,16 @@ template<typename IteratorType> class iteration_proxy
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const std::string empty_str = "";
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public:
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explicit iteration_proxy_internal(IteratorType it) noexcept : anchor(it) {}
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explicit iteration_proxy_value(IteratorType it) noexcept : anchor(it) {}
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/// dereference operator (needed for range-based for)
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iteration_proxy_internal& operator*()
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iteration_proxy_value& operator*()
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{
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return *this;
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}
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/// increment operator (needed for range-based for)
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iteration_proxy_internal& operator++()
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iteration_proxy_value& operator++()
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{
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++anchor;
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++array_index;
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@ -1647,13 +1645,13 @@ template<typename IteratorType> class iteration_proxy
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}
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/// equality operator (needed for InputIterator)
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bool operator==(const iteration_proxy_internal& o) const noexcept
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bool operator==(const iteration_proxy_value& o) const noexcept
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{
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return anchor == o.anchor;
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}
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/// inequality operator (needed for range-based for)
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bool operator!=(const iteration_proxy_internal& o) const noexcept
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bool operator!=(const iteration_proxy_value& o) const noexcept
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{
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return anchor != o.anchor;
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}
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@ -1691,8 +1689,12 @@ template<typename IteratorType> class iteration_proxy
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{
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return anchor.value();
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}
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};
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};
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/// proxy class for the items() function
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template<typename IteratorType> class iteration_proxy
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{
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private:
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/// the container to iterate
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typename IteratorType::reference container;
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@ -1702,20 +1704,55 @@ template<typename IteratorType> class iteration_proxy
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: container(cont) {}
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/// return iterator begin (needed for range-based for)
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iteration_proxy_internal begin() noexcept
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iteration_proxy_value<IteratorType> begin() noexcept
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{
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return iteration_proxy_internal(container.begin());
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return iteration_proxy_value<IteratorType>(container.begin());
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}
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/// return iterator end (needed for range-based for)
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iteration_proxy_internal end() noexcept
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iteration_proxy_value<IteratorType> end() noexcept
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{
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return iteration_proxy_internal(container.end());
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return iteration_proxy_value<IteratorType>(container.end());
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}
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};
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// Structured Bindings Support
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// For further reference see https://blog.tartanllama.xyz/structured-bindings/
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// And see https://github.com/nlohmann/json/pull/1391
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template <std::size_t N, typename IteratorType, enable_if_t<N == 0, int> = 0>
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auto get(const nlohmann::detail::iteration_proxy_value<IteratorType>& i) -> decltype(i.key())
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{
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return i.key();
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}
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// Structured Bindings Support
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// For further reference see https://blog.tartanllama.xyz/structured-bindings/
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// And see https://github.com/nlohmann/json/pull/1391
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template <std::size_t N, typename IteratorType, enable_if_t<N == 1, int> = 0>
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auto get(const nlohmann::detail::iteration_proxy_value<IteratorType>& i) -> decltype(i.value())
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{
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return i.value();
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}
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} // namespace detail
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} // namespace nlohmann
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// The Addition to the STD Namespace is required to add
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// Structured Bindings Support to the iteration_proxy_value class
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// For further reference see https://blog.tartanllama.xyz/structured-bindings/
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// And see https://github.com/nlohmann/json/pull/1391
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namespace std
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{
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template <typename IteratorType>
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struct tuple_size<::nlohmann::detail::iteration_proxy_value<IteratorType>>
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: std::integral_constant<std::size_t, 2> {};
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template <std::size_t N, typename IteratorType>
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struct tuple_element <
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N, ::nlohmann::detail::iteration_proxy_value<IteratorType >>
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{
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using type = decltype(
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get<N>(std::declval <
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::nlohmann::detail::iteration_proxy_value<IteratorType >> ()));
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};
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}
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namespace nlohmann
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{
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@ -1994,9 +2031,9 @@ void to_json(BasicJsonType& j, typename BasicJsonType::object_t&& obj)
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template <
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typename BasicJsonType, typename T, std::size_t N,
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enable_if_t<not std::is_constructible<typename BasicJsonType::string_t,
|
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const T (&)[N]>::value,
|
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const T(&)[N]>::value,
|
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int> = 0 >
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void to_json(BasicJsonType& j, const T (&arr)[N])
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void to_json(BasicJsonType& j, const T(&arr)[N])
|
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{
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external_constructor<value_t::array>::construct(j, arr);
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}
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@ -2004,21 +2041,21 @@ void to_json(BasicJsonType& j, const T (&arr)[N])
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template<typename BasicJsonType, typename... Args>
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void to_json(BasicJsonType& j, const std::pair<Args...>& p)
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{
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j = {p.first, p.second};
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j = { p.first, p.second };
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}
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// for https://github.com/nlohmann/json/pull/1134
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template<typename BasicJsonType, typename T,
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enable_if_t<std::is_same<T, typename iteration_proxy<typename BasicJsonType::iterator>::iteration_proxy_internal>::value, int> = 0>
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template < typename BasicJsonType, typename T,
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enable_if_t<std::is_same<T, iteration_proxy_value<typename BasicJsonType::iterator>>::value, int> = 0>
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void to_json(BasicJsonType& j, const T& b)
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{
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j = {{b.key(), b.value()}};
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j = { {b.key(), b.value()} };
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}
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template<typename BasicJsonType, typename Tuple, std::size_t... Idx>
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void to_json_tuple_impl(BasicJsonType& j, const Tuple& t, index_sequence<Idx...> /*unused*/)
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{
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j = {std::get<Idx>(t)...};
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j = { std::get<Idx>(t)... };
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}
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template<typename BasicJsonType, typename... Args>
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@ -5492,24 +5529,21 @@ namespace detail
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{
|
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// forward declare, to be able to friend it later on
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template<typename IteratorType> class iteration_proxy;
|
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template<typename IteratorType> class iteration_proxy_value;
|
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|
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/*!
|
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@brief a template for a bidirectional iterator for the @ref basic_json class
|
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|
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This class implements a both iterators (iterator and const_iterator) for the
|
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@ref basic_json class.
|
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|
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@note An iterator is called *initialized* when a pointer to a JSON value has
|
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been set (e.g., by a constructor or a copy assignment). If the iterator is
|
||||
default-constructed, it is *uninitialized* and most methods are undefined.
|
||||
**The library uses assertions to detect calls on uninitialized iterators.**
|
||||
|
||||
@requirement The class satisfies the following concept requirements:
|
||||
-
|
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[BidirectionalIterator](https://en.cppreference.com/w/cpp/named_req/BidirectionalIterator):
|
||||
The iterator that can be moved can be moved in both directions (i.e.
|
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incremented and decremented).
|
||||
|
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@since version 1.0.0, simplified in version 2.0.9, change to bidirectional
|
||||
iterators in version 3.0.0 (see https://github.com/nlohmann/json/issues/593)
|
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*/
|
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|
|
@ -5520,6 +5554,7 @@ class iter_impl
|
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friend iter_impl<typename std::conditional<std::is_const<BasicJsonType>::value, typename std::remove_const<BasicJsonType>::type, const BasicJsonType>::type>;
|
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friend BasicJsonType;
|
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friend iteration_proxy<iter_impl>;
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friend iteration_proxy_value<iter_impl>;
|
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using object_t = typename BasicJsonType::object_t;
|
||||
using array_t = typename BasicJsonType::array_t;
|
||||
|
|
@ -6087,7 +6122,6 @@ class iter_impl
|
|||
};
|
||||
} // namespace detail
|
||||
} // namespace nlohmann
|
||||
|
||||
// #include <nlohmann/detail/iterators/iteration_proxy.hpp>
|
||||
|
||||
// #include <nlohmann/detail/iterators/json_reverse_iterator.hpp>
|
||||
|
|
|
|||
|
|
@ -3,21 +3,17 @@
|
|||
__| | __| | | | JSON for Modern C++ (test suite)
|
||||
| | |__ | | | | | | version 3.4.0
|
||||
|_____|_____|_____|_|___| https://github.com/nlohmann/json
|
||||
|
||||
Licensed under the MIT License <http://opensource.org/licenses/MIT>.
|
||||
SPDX-License-Identifier: MIT
|
||||
Copyright (c) 2013-2018 Niels Lohmann <http://nlohmann.me>.
|
||||
|
||||
Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
of this software and associated documentation files (the "Software"), to deal
|
||||
in the Software without restriction, including without limitation the rights
|
||||
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||
copies of the Software, and to permit persons to whom the Software is
|
||||
furnished to do so, subject to the following conditions:
|
||||
|
||||
The above copyright notice and this permission notice shall be included in all
|
||||
copies or substantial portions of the Software.
|
||||
|
||||
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
|
|
@ -32,13 +28,20 @@ SOFTWARE.
|
|||
#include <nlohmann/json.hpp>
|
||||
using nlohmann::json;
|
||||
|
||||
#if (defined(__cplusplus) && __cplusplus >= 201703L) || (defined(_HAS_CXX17) && _HAS_CXX17 == 1) // fix for issue #464
|
||||
#define JSON_HAS_CPP_17
|
||||
#define JSON_HAS_CPP_14
|
||||
#elif (defined(__cplusplus) && __cplusplus >= 201402L) || (defined(_HAS_CXX14) && _HAS_CXX14 == 1)
|
||||
#define JSON_HAS_CPP_14
|
||||
#endif
|
||||
|
||||
TEST_CASE("iterator_wrapper")
|
||||
{
|
||||
SECTION("object")
|
||||
{
|
||||
SECTION("value")
|
||||
{
|
||||
json j = {{"A", 1}, {"B", 2}};
|
||||
json j = { {"A", 1}, {"B", 2} };
|
||||
int counter = 1;
|
||||
|
||||
for (auto i : json::iterator_wrapper(j))
|
||||
|
|
@ -71,7 +74,7 @@ TEST_CASE("iterator_wrapper")
|
|||
|
||||
SECTION("reference")
|
||||
{
|
||||
json j = {{"A", 1}, {"B", 2}};
|
||||
json j = { {"A", 1}, {"B", 2} };
|
||||
int counter = 1;
|
||||
|
||||
for (auto& i : json::iterator_wrapper(j))
|
||||
|
|
@ -110,12 +113,12 @@ TEST_CASE("iterator_wrapper")
|
|||
CHECK(counter == 3);
|
||||
|
||||
// check if values where changed
|
||||
CHECK(j == json({{"A", 11}, {"B", 22}}));
|
||||
CHECK(j == json({ {"A", 11}, {"B", 22} }));
|
||||
}
|
||||
|
||||
SECTION("const value")
|
||||
{
|
||||
json j = {{"A", 1}, {"B", 2}};
|
||||
json j = { {"A", 1}, {"B", 2} };
|
||||
int counter = 1;
|
||||
|
||||
for (const auto i : json::iterator_wrapper(j))
|
||||
|
|
@ -148,7 +151,7 @@ TEST_CASE("iterator_wrapper")
|
|||
|
||||
SECTION("const reference")
|
||||
{
|
||||
json j = {{"A", 1}, {"B", 2}};
|
||||
json j = { {"A", 1}, {"B", 2} };
|
||||
int counter = 1;
|
||||
|
||||
for (const auto& i : json::iterator_wrapper(j))
|
||||
|
|
@ -184,7 +187,7 @@ TEST_CASE("iterator_wrapper")
|
|||
{
|
||||
SECTION("value")
|
||||
{
|
||||
const json j = {{"A", 1}, {"B", 2}};
|
||||
const json j = { {"A", 1}, {"B", 2} };
|
||||
int counter = 1;
|
||||
|
||||
for (auto i : json::iterator_wrapper(j))
|
||||
|
|
@ -217,7 +220,7 @@ TEST_CASE("iterator_wrapper")
|
|||
|
||||
SECTION("reference")
|
||||
{
|
||||
const json j = {{"A", 1}, {"B", 2}};
|
||||
const json j = { {"A", 1}, {"B", 2} };
|
||||
int counter = 1;
|
||||
|
||||
for (auto& i : json::iterator_wrapper(j))
|
||||
|
|
@ -250,7 +253,7 @@ TEST_CASE("iterator_wrapper")
|
|||
|
||||
SECTION("const value")
|
||||
{
|
||||
const json j = {{"A", 1}, {"B", 2}};
|
||||
const json j = { {"A", 1}, {"B", 2} };
|
||||
int counter = 1;
|
||||
|
||||
for (const auto i : json::iterator_wrapper(j))
|
||||
|
|
@ -283,7 +286,7 @@ TEST_CASE("iterator_wrapper")
|
|||
|
||||
SECTION("const reference")
|
||||
{
|
||||
const json j = {{"A", 1}, {"B", 2}};
|
||||
const json j = { {"A", 1}, {"B", 2} };
|
||||
int counter = 1;
|
||||
|
||||
for (const auto& i : json::iterator_wrapper(j))
|
||||
|
|
@ -319,7 +322,7 @@ TEST_CASE("iterator_wrapper")
|
|||
{
|
||||
SECTION("value")
|
||||
{
|
||||
json j = {"A", "B"};
|
||||
json j = { "A", "B" };
|
||||
int counter = 1;
|
||||
|
||||
for (auto i : json::iterator_wrapper(j))
|
||||
|
|
@ -352,7 +355,7 @@ TEST_CASE("iterator_wrapper")
|
|||
|
||||
SECTION("reference")
|
||||
{
|
||||
json j = {"A", "B"};
|
||||
json j = { "A", "B" };
|
||||
int counter = 1;
|
||||
|
||||
for (auto& i : json::iterator_wrapper(j))
|
||||
|
|
@ -391,12 +394,12 @@ TEST_CASE("iterator_wrapper")
|
|||
CHECK(counter == 3);
|
||||
|
||||
// check if values where changed
|
||||
CHECK(j == json({"AA", "BB"}));
|
||||
CHECK(j == json({ "AA", "BB" }));
|
||||
}
|
||||
|
||||
SECTION("const value")
|
||||
{
|
||||
json j = {"A", "B"};
|
||||
json j = { "A", "B" };
|
||||
int counter = 1;
|
||||
|
||||
for (const auto i : json::iterator_wrapper(j))
|
||||
|
|
@ -429,7 +432,7 @@ TEST_CASE("iterator_wrapper")
|
|||
|
||||
SECTION("const reference")
|
||||
{
|
||||
json j = {"A", "B"};
|
||||
json j = { "A", "B" };
|
||||
int counter = 1;
|
||||
|
||||
for (const auto& i : json::iterator_wrapper(j))
|
||||
|
|
@ -465,7 +468,7 @@ TEST_CASE("iterator_wrapper")
|
|||
{
|
||||
SECTION("value")
|
||||
{
|
||||
const json j = {"A", "B"};
|
||||
const json j = { "A", "B" };
|
||||
int counter = 1;
|
||||
|
||||
for (auto i : json::iterator_wrapper(j))
|
||||
|
|
@ -498,7 +501,7 @@ TEST_CASE("iterator_wrapper")
|
|||
|
||||
SECTION("reference")
|
||||
{
|
||||
const json j = {"A", "B"};
|
||||
const json j = { "A", "B" };
|
||||
int counter = 1;
|
||||
|
||||
for (auto& i : json::iterator_wrapper(j))
|
||||
|
|
@ -531,7 +534,7 @@ TEST_CASE("iterator_wrapper")
|
|||
|
||||
SECTION("const value")
|
||||
{
|
||||
const json j = {"A", "B"};
|
||||
const json j = { "A", "B" };
|
||||
int counter = 1;
|
||||
|
||||
for (const auto i : json::iterator_wrapper(j))
|
||||
|
|
@ -564,7 +567,7 @@ TEST_CASE("iterator_wrapper")
|
|||
|
||||
SECTION("const reference")
|
||||
{
|
||||
const json j = {"A", "B"};
|
||||
const json j = { "A", "B" };
|
||||
int counter = 1;
|
||||
|
||||
for (const auto& i : json::iterator_wrapper(j))
|
||||
|
|
@ -735,7 +738,7 @@ TEST_CASE("items()")
|
|||
{
|
||||
SECTION("value")
|
||||
{
|
||||
json j = {{"A", 1}, {"B", 2}};
|
||||
json j = { {"A", 1}, {"B", 2} };
|
||||
int counter = 1;
|
||||
|
||||
for (auto i : j.items())
|
||||
|
|
@ -768,7 +771,7 @@ TEST_CASE("items()")
|
|||
|
||||
SECTION("reference")
|
||||
{
|
||||
json j = {{"A", 1}, {"B", 2}};
|
||||
json j = { {"A", 1}, {"B", 2} };
|
||||
int counter = 1;
|
||||
|
||||
for (auto& i : j.items())
|
||||
|
|
@ -807,12 +810,12 @@ TEST_CASE("items()")
|
|||
CHECK(counter == 3);
|
||||
|
||||
// check if values where changed
|
||||
CHECK(j == json({{"A", 11}, {"B", 22}}));
|
||||
CHECK(j == json({ {"A", 11}, {"B", 22} }));
|
||||
}
|
||||
|
||||
SECTION("const value")
|
||||
{
|
||||
json j = {{"A", 1}, {"B", 2}};
|
||||
json j = { {"A", 1}, {"B", 2} };
|
||||
int counter = 1;
|
||||
|
||||
for (const auto i : j.items())
|
||||
|
|
@ -845,7 +848,7 @@ TEST_CASE("items()")
|
|||
|
||||
SECTION("const reference")
|
||||
{
|
||||
json j = {{"A", 1}, {"B", 2}};
|
||||
json j = { {"A", 1}, {"B", 2} };
|
||||
int counter = 1;
|
||||
|
||||
for (const auto& i : j.items())
|
||||
|
|
@ -875,13 +878,29 @@ TEST_CASE("items()")
|
|||
|
||||
CHECK(counter == 3);
|
||||
}
|
||||
|
||||
#ifdef JSON_HAS_CPP_17
|
||||
SECTION("structured bindings")
|
||||
{
|
||||
json j = { {"A", 1}, {"B", 2} };
|
||||
|
||||
std::map<std::string, int> m;
|
||||
|
||||
for (auto const&[key, value] : j.items())
|
||||
{
|
||||
m.emplace(key, value);
|
||||
}
|
||||
|
||||
CHECK(j.get<decltype(m)>() == m);
|
||||
}
|
||||
#endif
|
||||
}
|
||||
|
||||
SECTION("const object")
|
||||
{
|
||||
SECTION("value")
|
||||
{
|
||||
const json j = {{"A", 1}, {"B", 2}};
|
||||
const json j = { {"A", 1}, {"B", 2} };
|
||||
int counter = 1;
|
||||
|
||||
for (auto i : j.items())
|
||||
|
|
@ -914,7 +933,7 @@ TEST_CASE("items()")
|
|||
|
||||
SECTION("reference")
|
||||
{
|
||||
const json j = {{"A", 1}, {"B", 2}};
|
||||
const json j = { {"A", 1}, {"B", 2} };
|
||||
int counter = 1;
|
||||
|
||||
for (auto& i : j.items())
|
||||
|
|
@ -947,7 +966,7 @@ TEST_CASE("items()")
|
|||
|
||||
SECTION("const value")
|
||||
{
|
||||
const json j = {{"A", 1}, {"B", 2}};
|
||||
const json j = { {"A", 1}, {"B", 2} };
|
||||
int counter = 1;
|
||||
|
||||
for (const auto i : j.items())
|
||||
|
|
@ -980,7 +999,7 @@ TEST_CASE("items()")
|
|||
|
||||
SECTION("const reference")
|
||||
{
|
||||
const json j = {{"A", 1}, {"B", 2}};
|
||||
const json j = { {"A", 1}, {"B", 2} };
|
||||
int counter = 1;
|
||||
|
||||
for (const auto& i : j.items())
|
||||
|
|
@ -1016,7 +1035,7 @@ TEST_CASE("items()")
|
|||
{
|
||||
SECTION("value")
|
||||
{
|
||||
json j = {"A", "B"};
|
||||
json j = { "A", "B" };
|
||||
int counter = 1;
|
||||
|
||||
for (auto i : j.items())
|
||||
|
|
@ -1049,7 +1068,7 @@ TEST_CASE("items()")
|
|||
|
||||
SECTION("reference")
|
||||
{
|
||||
json j = {"A", "B"};
|
||||
json j = { "A", "B" };
|
||||
int counter = 1;
|
||||
|
||||
for (auto& i : j.items())
|
||||
|
|
@ -1088,12 +1107,12 @@ TEST_CASE("items()")
|
|||
CHECK(counter == 3);
|
||||
|
||||
// check if values where changed
|
||||
CHECK(j == json({"AA", "BB"}));
|
||||
CHECK(j == json({ "AA", "BB" }));
|
||||
}
|
||||
|
||||
SECTION("const value")
|
||||
{
|
||||
json j = {"A", "B"};
|
||||
json j = { "A", "B" };
|
||||
int counter = 1;
|
||||
|
||||
for (const auto i : j.items())
|
||||
|
|
@ -1126,7 +1145,7 @@ TEST_CASE("items()")
|
|||
|
||||
SECTION("const reference")
|
||||
{
|
||||
json j = {"A", "B"};
|
||||
json j = { "A", "B" };
|
||||
int counter = 1;
|
||||
|
||||
for (const auto& i : j.items())
|
||||
|
|
@ -1162,7 +1181,7 @@ TEST_CASE("items()")
|
|||
{
|
||||
SECTION("value")
|
||||
{
|
||||
const json j = {"A", "B"};
|
||||
const json j = { "A", "B" };
|
||||
int counter = 1;
|
||||
|
||||
for (auto i : j.items())
|
||||
|
|
@ -1195,7 +1214,7 @@ TEST_CASE("items()")
|
|||
|
||||
SECTION("reference")
|
||||
{
|
||||
const json j = {"A", "B"};
|
||||
const json j = { "A", "B" };
|
||||
int counter = 1;
|
||||
|
||||
for (auto& i : j.items())
|
||||
|
|
@ -1228,7 +1247,7 @@ TEST_CASE("items()")
|
|||
|
||||
SECTION("const value")
|
||||
{
|
||||
const json j = {"A", "B"};
|
||||
const json j = { "A", "B" };
|
||||
int counter = 1;
|
||||
|
||||
for (const auto i : j.items())
|
||||
|
|
@ -1261,7 +1280,7 @@ TEST_CASE("items()")
|
|||
|
||||
SECTION("const reference")
|
||||
{
|
||||
const json j = {"A", "B"};
|
||||
const json j = { "A", "B" };
|
||||
int counter = 1;
|
||||
|
||||
for (const auto& i : j.items())
|
||||
|
|
|
|||
Loading…
Reference in a new issue