added insert, emplace, push_back etc. compatibility with node_views

In service of satisfying #49.

docs/Doxyfile

@@ -350,7 +350,6 @@ PREDEFINED             =                                           \
     "TOML_TRIVIAL_ABI="                                            \
     "TOML_EMPTY_BASES="                                            \
     "TOML_INTERFACE"                                               \
-    "TOML_SIMPLE_STATIC_ASSERT_MESSAGES=1"                         \
     "TOML_INTERNAL_LINKAGE=static"
 EXPAND_AS_DEFINED      = 
 SKIP_FUNCTION_MACROS   = NO

docs/tomlplusplus.css

@@ -47,7 +47,7 @@ article div > section > section
 
 pre, code, .tpp-enable-if > a
 {
-	font-family: 'Consolas', 'Source Code Pro', monospace, monospace, monospace;
+	font-family: 'Consolas', 'Source Code Pro', monospace;
 }
 
 a.tpp-external
@@ -142,6 +142,7 @@ pre.m-code + pre.m-console span
 .m-doc-details div table.m-table.m-fullwidth.m-flat tbody tr td strong em
 {
 	color: #a5c9ea;
+	font-style: normal;
 }
 
 /* comments */
@@ -316,9 +317,10 @@ pre > p.godbolt
 {
   float: right;
 }
-@media only screen and ((max-width: 575px) or ((hover: none) and (pointer: coarse)))
+@media only screen and ((max-width: 575px) or (hover: none) or (pointer: coarse) or (pointer: none))
 {
-	.godbolt {
+	.godbolt
+	{
 		display: none;
 	}
 }

examples/toml_generator.cpp

@@ -129,7 +129,10 @@ int main(int argc, char** argv)
 		toml::node* new_node{};
 
 		if (auto arr = tree.back()->as_array())
-			new_node = &arr->push_back(std::forward<decltype(obj)>(obj));
+		{
+			arr->push_back(std::forward<decltype(obj)>(obj));
+			new_node = &arr->back();
+		}
 		else
 			new_node = &(*tree.back()->ref<toml::table>().insert_or_assign(
 				rand_string(rand<size_t>(1u, 4u), '-'),

include/toml++/toml_array.h

@@ -15,7 +15,7 @@ TOML_IMPL_NAMESPACE_START
 	class TOML_TRIVIAL_ABI array_iterator final
 	{
 		private:
-			friend class ::toml::array;
+			friend class TOML_NAMESPACE::array;
 
 			using raw_mutable_iterator = std::vector<std::unique_ptr<node>>::iterator;
 			using raw_const_iterator = std::vector<std::unique_ptr<node>>::const_iterator;
@@ -180,6 +180,7 @@ TOML_IMPL_NAMESPACE_START
 	{
 		using type = unwrap_node<remove_cvref_t<T>>;
 		static_assert(!std::is_same_v<type, node>);
+		static_assert(!is_node_view<type>);
 
 		if constexpr (is_one_of<type, array, table>)
 		{
@@ -211,12 +212,17 @@ TOML_IMPL_NAMESPACE_START
 
 	template <typename T>
 	[[nodiscard]]
-	TOML_ATTR(returns_nonnull)
 	auto* make_node(T&& val) noexcept
 	{
 		using type = unwrap_node<remove_cvref_t<T>>;
-		if constexpr (std::is_same_v<type, node>)
+		if constexpr (std::is_same_v<type, node> || is_node_view<type>)
 		{
+			if constexpr (is_node_view<type>)
+			{
+				if (!val)
+					return static_cast<toml::node*>(nullptr);
+			}
+
 			return std::forward<T>(val).visit([](auto&& concrete) noexcept
 			{
 				return static_cast<toml::node*>(make_node_specialized(std::forward<decltype(concrete)>(concrete)));
@@ -228,7 +234,6 @@ TOML_IMPL_NAMESPACE_START
 
 	template <typename T>
 	[[nodiscard]]
-	TOML_ATTR(returns_nonnull)
 	auto* make_node(inserter<T>&& val) noexcept
 	{
 		return make_node(std::move(val.value));
@@ -304,6 +309,17 @@ TOML_NAMESPACE_START
 
 			void preinsertion_resize(size_t idx, size_t count) noexcept;
 
+			template <typename T>
+			void emplace_back_if_not_empty_view(T&& val) noexcept
+			{
+				if constexpr (impl::is_node_view<T>)
+				{
+					if (!val)
+						return;
+				}
+				elements.emplace_back(impl::make_node(std::forward<T>(val)));
+			}
+
 		public:
 
 			using value_type = node;
@@ -376,11 +392,11 @@ TOML_NAMESPACE_START
 			explicit array(ElemType&& val, ElemTypes&&... vals)
 			{
 				elements.reserve(sizeof...(ElemTypes) + 1_sz);
-				elements.emplace_back(impl::make_node(std::forward<ElemType>(val)));
+				emplace_back_if_not_empty_view(std::forward<ElemType>(val));
 				if constexpr (sizeof...(ElemTypes) > 0)
 				{
 					(
-						elements.emplace_back(impl::make_node(std::forward<ElemTypes>(vals))),
+						emplace_back_if_not_empty_view(std::forward<ElemTypes>(vals)),
 						...
 					);
 				}
@@ -529,14 +545,27 @@ TOML_NAMESPACE_START
 			/// [ 1, 'two', 3, [ 4, 5 ] ]
 			/// \eout
 			/// 
-			/// \tparam	ElemType	One of the TOML node or value types (or a type promotable to one).
+			/// \tparam ElemType	toml::node, toml::node_view, toml::table, toml::array, or a native TOML value type
+			/// 					(or a type promotable to one).
 			/// \param 	pos			The insertion position.
 			/// \param 	val			The node or value being inserted.
 			///
-			/// \returns	An iterator to the newly-inserted element.
+			/// \returns <strong><em>Valid input:</em></strong><br>
+			/// 		 An iterator to the newly-inserted element.
+			/// 		 <br><br>
+			/// 		 <strong><em>`val` is an empty toml::node_view:</em></strong><br>
+			/// 		 end()
+			/// 
+			/// \attention The return value will always be `end()` if the input value was an empty toml::node_view,
+			/// 		   because no insertion can take place. This is the only circumstance in which this can occur.
 			template <typename ElemType>
 			iterator insert(const_iterator pos, ElemType&& val) noexcept
 			{
+				if constexpr (impl::is_node_view<ElemType>)
+				{
+					if (!val)
+						return end();
+				}
 				return { elements.emplace(pos.raw_, impl::make_node(std::forward<ElemType>(val))) };
 			}
 
@@ -562,15 +591,31 @@ TOML_NAMESPACE_START
 			/// ]
 			/// \eout
 			/// 
-			/// \tparam	ElemType	One of the TOML node or value types (or a type promotable to one).
+			/// \tparam ElemType	toml::node, toml::node_view, toml::table, toml::array, or a native TOML value type
+			/// 					(or a type promotable to one).
 			/// \param 	pos			The insertion position.
 			/// \param 	count		The number of times the node or value should be inserted.
 			/// \param 	val			The node or value being inserted.
 			///
-			/// \returns	An iterator to the first newly-inserted element (or a copy of `pos` if count was 0).
+			/// \returns <strong><em>Valid input:</em></strong><br>
+			/// 		 An iterator to the newly-inserted element.
+			/// 		 <br><br>
+			/// 		 <strong><em>`count == 0`:</em></strong><br>
+			/// 		 A copy of pos
+			/// 		 <br><br>
+			/// 		 <strong><em>`val` is an empty toml::node_view:</em></strong><br>
+			/// 		 end()
+			/// 
+			/// \attention The return value will always be `end()` if the input value was an empty toml::node_view,
+			/// 		   because no insertion can take place. This is the only circumstance in which this can occur.
 			template <typename ElemType>
 			iterator insert(const_iterator pos, size_t count, ElemType&& val) noexcept
 			{
+				if constexpr (impl::is_node_view<ElemType>)
+				{
+					if (!val)
+						return end();
+				}
 				switch (count)
 				{
 					case 0: return { elements.begin() + (pos.raw_ - elements.cbegin()) };
@@ -597,50 +642,70 @@ TOML_NAMESPACE_START
 			/// \param 	first	Iterator to the first node or value being inserted.
 			/// \param 	last	Iterator to the one-past-the-last node or value being inserted.
 			///
-			/// \returns	An iterator to the first newly-inserted element (or a copy of `pos` if `first` >= `last`).
+			/// \returns <strong><em>Valid input:</em></strong><br>
+			/// 		 An iterator to the first newly-inserted element.
+			/// 		 <br><br>
+			/// 		 <strong><em>`first >= last`:</em></strong><br>
+			/// 		 A copy of pos
+			/// 		 <br><br>
+			/// 		 <strong><em>All objects in the range were empty toml::node_views:</em></strong><br>
+			/// 		 A copy of pos
 			template <typename Iter>
 			iterator insert(const_iterator pos, Iter first, Iter last) noexcept
 			{
-				const auto count = std::distance(first, last);
-				if (count <= 0)
+				const auto distance = std::distance(first, last);
+				if (distance <= 0)
 					return { elements.begin() + (pos.raw_ - elements.cbegin()) };
-				else if (count == 1)
-					return insert(pos, *first);
 				else
 				{
+					auto count = distance;
+					using deref_type = decltype(*first);
+					if constexpr (impl::is_node_view<deref_type>)
+					{
+						for (auto it = first; it != last; it++)
+							if (!(*it))
+								count--;
+						if (!count)
+							return { elements.begin() + (pos.raw_ - elements.cbegin()) };
+					}
 					const auto start_idx = static_cast<size_t>(pos.raw_ - elements.cbegin());
 					preinsertion_resize(start_idx, static_cast<size_t>(count));
 					size_t i = start_idx;
 					for (auto it = first; it != last; it++)
-						elements[i++].reset(impl::make_node(*it));
+					{
+						if constexpr (impl::is_node_view<deref_type>)
+						{
+							if (!(*it))
+								continue;
+						}
+						if constexpr (std::is_rvalue_reference_v<deref_type>)
+							elements[i++].reset(impl::make_node(std::move(*it)));
+						else
+							elements[i++].reset(impl::make_node(*it));
+					}
 					return { elements.begin() + static_cast<ptrdiff_t>(start_idx) };
 				}
 			}
 
 			/// \brief	Inserts a range of elements into the array at a specific position.
 			///
-			/// \tparam	ElemType	One of the TOML node or value types (or a type promotable to one).
+			/// \tparam ElemType	toml::node_view, toml::table, toml::array, or a native TOML value type
+			/// 					(or a type promotable to one).
 			/// \param 	pos			The insertion position.
 			/// \param 	ilist		An initializer list containing the values to be inserted.
 			///
-			/// \returns	An iterator to the first newly-inserted element (or a copy of `pos` if `ilist` was empty).
+			/// \returns <strong><em>Valid input:</em></strong><br>
+			/// 		 An iterator to the first newly-inserted element.
+			/// 		 <br><br>
+			/// 		 <strong><em>`ilist.size() == 0`:</em></strong><br>
+			/// 		 A copy of pos
+			/// 		 <br><br>
+			/// 		 <strong><em>All objects in the list were empty toml::node_views:</em></strong><br>
+			/// 		 A copy of pos
 			template <typename ElemType>
 			iterator insert(const_iterator pos, std::initializer_list<ElemType> ilist) noexcept
 			{
-				switch (ilist.size())
-				{
-					case 0: return { elements.begin() + (pos.raw_ - elements.cbegin()) };
-					case 1: return insert(pos, *ilist.begin());
-					default:
-					{
-						const auto start_idx = static_cast<size_t>(pos.raw_ - elements.cbegin());
-						preinsertion_resize(start_idx, ilist.size());
-						size_t i = start_idx;
-						for (auto& val : ilist)
-							elements[i++].reset(impl::make_node(val));
-						return { elements.begin() + static_cast<ptrdiff_t>(start_idx) };
-					}
-				}
+				return insert(pos, ilist.begin(), ilist.end());
 			}
 
 			/// \brief	Emplaces a new element at a specific position in the array.
@@ -658,7 +723,7 @@ TOML_NAMESPACE_START
 			/// [ 1, 'drill', 2 ]
 			/// \eout
 			/// 
-			/// \tparam	ElemType	One of the TOML node or value types.
+			/// \tparam ElemType	toml::table, toml::array, or any native TOML value type.
 			/// \tparam	Args		Value constructor argument types.
 			/// \param 	pos			The insertion position.
 			/// \param 	args		Arguments to forward to the value's constructor.
@@ -745,13 +810,19 @@ TOML_NAMESPACE_START
 			/// [ 1, 2 ]
 			/// \eout
 			/// 
-			/// \tparam	ElemType			One of the TOML node or value types (or a type promotable to one).
+			/// \tparam ElemType	toml::node, toml::table, toml::array, or a native TOML value type
+			/// 					(or a type promotable to one).
 			/// 
 			/// \param 	new_size			The number of elements the array will have after resizing.
 			/// \param 	default_init_val	The node or value used to initialize new elements if the array needs to grow.
 			template <typename ElemType>
 			void resize(size_t new_size, ElemType&& default_init_val) noexcept
 			{
+				static_assert(
+					!impl::is_node_view<ElemType>,
+					"The default element type argument to toml::array::resize may not be toml::node_view."
+				);
+
 				if (!new_size)
 					elements.clear();
 				else if (new_size < elements.size())
@@ -800,16 +871,15 @@ TOML_NAMESPACE_START
 			/// [ 1, 2, 3, 4.0, [ 5, 'six' ] ]
 			/// \eout
 			/// 
-			/// \tparam	ElemType	One of the TOML node or value types (or a type promotable to one).
+			/// \tparam ElemType	toml::node, toml::node_view, toml::table, toml::array, or a native TOML value type
 			/// \param 	val			The node or value being added.
 			/// 
-			/// \returns A reference to the newly-constructed element.
+			/// \attention	No insertion takes place if the input value is an empty toml::node_view.
+			/// 			This is the only circumstance in which this can occur.
 			template <typename ElemType>
-			decltype(auto) push_back(ElemType&& val) noexcept
+			void push_back(ElemType&& val) noexcept
 			{
-				auto nde = impl::make_node(std::forward<ElemType>(val));
-				elements.emplace_back(nde);
-				return *nde;
+				emplace_back_if_not_empty_view(std::forward<ElemType>(val));
 			}
 
 			/// \brief	Emplaces a new element at the end of the array.
@@ -825,7 +895,7 @@ TOML_NAMESPACE_START
 			/// [ 1, 2, [ 3, 'four' ] ]
 			/// \eout
 			/// 
-			/// \tparam	ElemType	One of the TOML node or value types.
+			/// \tparam ElemType	toml::table, toml::array, or a native TOML value type
 			/// \tparam	Args		Value constructor argument types.
 			/// \param 	args		Arguments to forward to the value's constructor.
 			/// 
@@ -895,7 +965,7 @@ TOML_NAMESPACE_START
 			/// element [0] is an integer with value 42
 			/// \eout
 			/// 
-			/// \tparam	ElemType	The element's type.
+			/// \tparam ElemType	toml::table, toml::array, or a native TOML value type
 			/// \param 	index		The element's index.
 			///
 			/// \returns	A pointer to the selected element if it existed and was of the specified type, or nullptr.
@@ -910,7 +980,7 @@ TOML_NAMESPACE_START
 
 			/// \brief	Gets the element at a specific index if it is a particular type (const overload).
 			///
-			/// \tparam	ElemType	The element's type.
+			/// \tparam ElemType	toml::table, toml::array, or a native TOML value type
 			/// \param 	index		The element's index.
 			///
 			/// \returns	A pointer to the selected element if it existed and was of the specified type, or nullptr.

include/toml++/toml_common.h

@@ -549,6 +549,9 @@ TOML_IMPL_NAMESPACE_START
 	template <>           struct node_type_getter<array> { static constexpr auto value = node_type::array; };
 	template <typename T>
 	inline constexpr node_type node_type_of = node_type_getter<unwrap_node<remove_cvref_t<T>>>::value;
+
+	template <typename T>
+	inline constexpr bool is_node_view = is_one_of<impl::remove_cvref_t<T>, node_view<node>, node_view<const node>>;
 }
 TOML_IMPL_NAMESPACE_END
 

include/toml++/toml_node.h

@@ -10,7 +10,7 @@ TOML_PUSH_WARNINGS
 TOML_DISABLE_PADDING_WARNINGS
 TOML_DISABLE_MISC_WARNINGS
 
-#if TOML_SIMPLE_STATIC_ASSERT_MESSAGES
+#if defined(doxygen) || TOML_SIMPLE_STATIC_ASSERT_MESSAGES
 
 #define TOML_SA_NEWLINE		" "
 #define TOML_SA_LIST_SEP	", "

include/toml++/toml_node_view.h

@@ -63,8 +63,8 @@ TOML_NAMESPACE_START
 			using viewed_type = ViewedType;
 
 		private:
-			friend class toml::table;
-			template <typename T> friend class toml::node_view;
+			friend class TOML_NAMESPACE::table;
+			template <typename T> friend class TOML_NAMESPACE::node_view;
 
 			mutable viewed_type* node_ = nullptr;
 
@@ -83,6 +83,19 @@ TOML_NAMESPACE_START
 			TOML_NODISCARD_CTOR
 			node_view() noexcept = default;
 
+			///// \brief	Copy constructor.
+			TOML_NODISCARD_CTOR
+			node_view(const node_view&) noexcept = default;
+
+			///// \brief	Copy-assignment operator.
+			TOML_NODISCARD_CTOR
+			node_view& operator= (const node_view&) noexcept = default;
+
+			///// \brief	Move constructor.
+			node_view(node_view&&) noexcept = default;
+
+			node_view& operator= (node_view&&) noexcept = delete;
+
 			/// \brief	Returns true if the view references a node.
 			[[nodiscard]] explicit operator bool() const noexcept { return node_ != nullptr; }
 			/// \brief	Returns the node that's being referenced by the view.

include/toml++/toml_table.h

@@ -25,7 +25,7 @@ TOML_IMPL_NAMESPACE_START
 	class table_iterator final
 	{
 		private:
-			friend class ::toml::table;
+			friend class TOML_NAMESPACE::table;
 
 			using proxy_type = table_proxy_pair<IsConst>;
 			using raw_mutable_iterator = string_map<std::unique_ptr<node>>::iterator;
@@ -278,7 +278,6 @@ TOML_NAMESPACE_START
 				: table{ arr, N }
 			{}
 
-
 			/// \brief	Always returns `node_type::table` for table nodes.
 			[[nodiscard]] node_type type() const noexcept override;
 			/// \brief	Always returns `true` for table nodes.
@@ -453,13 +452,22 @@ TOML_NAMESPACE_START
 			/// \eout
 			/// 
 			/// \tparam KeyType		std::string (or a type convertible to it).
-			/// \tparam ValueType	One of the TOML ndoe or value types (or a type promotable to one).
+			/// \tparam ValueType	toml::node, toml::node_view, toml::table, toml::array, or a native TOML value type
+			/// 					(or a type promotable to one).
 			/// \param 	key			The key at which to insert the new value.
 			/// \param 	val			The new value to insert.
 			/// 
-			/// \returns A std::pair containing:
-			/// 		- An iterator to the insertion position (or the position of the value that prevented insertion)  
-			/// 		- A boolean indicating if the insertion was successful.
+			/// \returns <strong><em>Valid input:</em></strong><br>
+			/// 		<ul>
+			/// 			<li>An iterator to the insertion position (or the position of the value that prevented insertion)
+			/// 			<li>A boolean indicating if the insertion was successful.
+			/// 		</ul>
+			/// 		 <strong><em>`val` is an empty toml::node_view:</em></strong><br>
+			/// 		 `{ end(), false }`
+			/// 
+			/// \attention The return value will always be `{ end(), false }` if the input value was an
+			/// 		   empty toml::node_view, because no insertion can take place. This is the only circumstance
+			/// 		   in which this can occur.
 			template <typename KeyType, typename ValueType, typename = std::enable_if_t<
 				std::is_convertible_v<KeyType&&, std::string_view>
 				|| impl::is_wide_string<KeyType>
@@ -471,6 +479,12 @@ TOML_NAMESPACE_START
 					"Insertion using wide-character keys is only supported on Windows with TOML_WINDOWS_COMPAT enabled."
 				);
 
+				if constexpr (impl::is_node_view<ValueType>)
+				{
+					if (!val)
+						return { end(), false };
+				}
+
 				if constexpr (impl::is_wide_string<KeyType>)
 				{
 					#if TOML_WINDOWS_COMPAT
@@ -485,9 +499,9 @@ TOML_NAMESPACE_START
 					if (ipos == map.end() || ipos->first != key)
 					{
 						ipos = map.emplace_hint(ipos, std::forward<KeyType>(key), impl::make_node(std::forward<ValueType>(val)));
-						return { ipos, true };
+						return { iterator{ ipos }, true };
 					}
-					return { ipos, false };
+					return { iterator{ ipos }, false };
 				}
 			}
 
@@ -583,13 +597,22 @@ TOML_NAMESPACE_START
 			/// \eout
 			/// 
 			/// \tparam KeyType		std::string (or a type convertible to it).
-			/// \tparam ValueType	One of the TOML node or value types (or a type promotable to one).
+			/// \tparam ValueType	toml::node, toml::node_view, toml::table, toml::array, or a native TOML value type
+			/// 					(or a type promotable to one).
 			/// \param 	key			The key at which to insert or assign the value.
 			/// \param 	val			The value to insert/assign.
 			/// 
-			/// \returns A std::pair containing:
-			/// 		- An iterator to the value's position
-			/// 		- A boolean containing `true` if the value was inserted, `false` if it was assigned.
+			/// \returns <strong><em>Valid input:</em></strong><br>
+			/// 		<ul>
+			/// 			<li>An iterator to the value's position
+			/// 			<li>`true` if the value was inserted, `false` if it was assigned.
+			/// 		</ul>
+			/// 		 <strong><em>`val` is an empty toml::node_view:</em></strong><br>
+			/// 		 `{ end(), false }`
+			/// 
+			/// \attention The return value will always be `{ end(), false }` if the input value was
+			/// 		   an empty toml::node_view, because no insertion or assignment can take place.
+			/// 		   This is the only circumstance in which this can occur.
 			template <typename KeyType, typename ValueType>
 			std::pair<iterator, bool> insert_or_assign(KeyType&& key, ValueType&& val) noexcept
 			{
@@ -598,6 +621,12 @@ TOML_NAMESPACE_START
 					"Insertion using wide-character keys is only supported on Windows with TOML_WINDOWS_COMPAT enabled."
 				);
 
+				if constexpr (impl::is_node_view<ValueType>)
+				{
+					if (!val)
+						return { end(), false };
+				}
+
 				if constexpr (impl::is_wide_string<KeyType>)
 				{
 					#if TOML_WINDOWS_COMPAT
@@ -612,12 +641,12 @@ TOML_NAMESPACE_START
 					if (ipos == map.end() || ipos->first != key)
 					{
 						ipos = map.emplace_hint(ipos, std::forward<KeyType>(key), impl::make_node(std::forward<ValueType>(val)));
-						return { ipos, true };
+						return { iterator{ ipos }, true };
 					}
 					else
 					{
 						(*ipos).second.reset(impl::make_node(std::forward<ValueType>(val)));
-						return { ipos, false };
+						return { iterator{ ipos }, false };
 					}
 				}
 			}
@@ -649,13 +678,13 @@ TOML_NAMESPACE_START
 			/// { a = 1, b = 2, c = 3, d = "drill" }
 			/// \eout
 			/// 
-			/// \tparam	ValueType	One of the TOML node or value types.
+			/// \tparam ValueType	toml::table, toml::array, or any native TOML value type.
 			/// \tparam KeyType		std::string (or a type convertible to it).
 			/// \tparam ValueArgs	Value constructor argument types.
 			/// \param 	key			The key at which to emplace the new value.
 			/// \param 	args		Arguments to forward to the value's constructor.
 			/// 
-			/// \returns A std::pair containing:
+			/// \returns A std::pair containing: <br>
 			/// 		- An iterator to the emplacement position (or the position of the value that prevented emplacement)
 			/// 		- A boolean indicating if the emplacement was successful.  
 			/// 
@@ -694,9 +723,9 @@ TOML_NAMESPACE_START
 							std::forward<KeyType>(key),
 							new impl::wrap_node<type>{ std::forward<ValueArgs>(args)... }
 						);
-						return { ipos, true };
+						return { iterator{ ipos }, true };
 					}
-					return { ipos, false };
+					return { iterator{ ipos }, false };
 				}
 			}
 

include/toml++/toml_table.hpp

@@ -70,6 +70,8 @@ TOML_NAMESPACE_START
 	{
 		for (size_t i = 0; i < count; i++)
 		{
+			if (!pairs[i].value) // empty node_views
+				continue;
 			map.insert_or_assign(
 				std::move(pairs[i].key),
 				std::move(pairs[i].value)

python/generate_windows_test_targets.py

@@ -120,6 +120,7 @@ def main():
 		</ClCompile>
 		<ClCompile Include="..\..\tests\unicode.cpp" />
 		<ClCompile Include="..\..\tests\unicode_generated.cpp" />
+		<ClCompile Include="..\..\tests\user_feedback.cpp" />
 		<ClCompile Include="..\..\tests\windows_compat.cpp" />
 	</ItemGroup>
 	<ItemGroup>

tests/manipulating_arrays.cpp

@@ -256,7 +256,8 @@ TEST_CASE("arrays - insertion and erasure")
 
 	// push_back(ElemType&& val) noexcept
 	{
-		decltype(auto) val = arr.push_back("test"sv);
+		arr.push_back("test"sv);
+		auto& val = *arr.back().as_string();
 		CHECK(arr.size() == 6_sz);
 		REQUIRE(arr.get_as<std::string>(5_sz));
 		CHECK(*arr.get_as<std::string>(5_sz) == "test"sv);

tests/meson.build

@@ -21,6 +21,7 @@ test_sources = [
 	'manipulating_values.cpp',
 	'unicode.cpp',
 	'unicode_generated.cpp',
+	'user_feedback.cpp',
 	'windows_compat.cpp'
 ]
 
@@ -300,12 +301,6 @@ foreach cpp20 : cpp20_modes
 						name = name + '_tlopt'
 					endif
 					
-					if compiler_supports_float16
-						if compiler.get_id() == 'gcc'
-							args += '-mfp16-format=ieee'
-						endif
-					endif
-
 					executables += [[
 						name,
 						executable(

tests/settings.h

@@ -84,12 +84,12 @@
 #ifndef SHOULD_HAVE_FLOAT16
 	#define SHOULD_HAVE_FLOAT16 0
 #endif
-#ifndef SHOULD_HAVE_INT128
-	#define SHOULD_HAVE_INT128 0
-#endif
 #ifndef SHOULD_HAVE_FLOAT128
 	#define SHOULD_HAVE_FLOAT128 0
 #endif
+#ifndef SHOULD_HAVE_INT128
+	#define SHOULD_HAVE_INT128 0
+#endif
 #ifndef SHOULD_HAVE_EXCEPTIONS
 	#define SHOULD_HAVE_EXCEPTIONS 1
 #endif

tests/user_feedback.cpp

@@ -0,0 +1,88 @@
+// This file is a part of toml++ and is subject to the the terms of the MIT license.
+// Copyright (c) 2019-2020 Mark Gillard <mark.gillard@outlook.com.au>
+// See https://github.com/marzer/tomlplusplus/blob/master/LICENSE for the full license text.
+// SPDX-License-Identifier: MIT
+
+#include "tests.h"
+
+// this file is about testing user misc. repros submitted via github issues, et cetera.
+
+TEST_CASE("feedback - github/issues/49")
+{
+	// see: https://github.com/marzer/tomlplusplus/issues/49#issuecomment-664428571
+	{
+		toml::table t1;
+		t1.insert_or_assign("bar1", toml::array{ 1, 2, 3 });
+		CHECK(t1 == toml::table{{
+			{ "bar1"sv, toml::array{ 1, 2, 3 } }
+		}});
+
+		t1.insert_or_assign("foo1", *t1.get("bar1"));
+		CHECK(t1 == toml::table{{
+			{ "bar1"sv, toml::array{ 1, 2, 3 } },
+			{ "foo1"sv, toml::array{ 1, 2, 3 } }
+		}});
+
+		//t1["foo1"] = t1["bar1"]; // does nothing, should this fail to compile?
+		// - yes -
+
+		//*t1["foo1"].node() = *t1["bar1"].node(); // compile failure; copying node_view would be a bad thing
+		// - correct; copying toml::node directly like that is impossible b.c. it's an abstract base class-
+
+		toml::array* array1 = t1["foo1"].node()->as_array();
+		array1->push_back(4);
+		CHECK(t1 == toml::table{{
+			{ "bar1"sv, toml::array{ 1, 2, 3 } },
+			{ "foo1"sv, toml::array{ 1, 2, 3, 4 } }
+		}});
+
+		t1.insert_or_assign("foo3", t1["foo1"]);
+		CHECK(t1 == toml::table{{
+			{ "bar1"sv, toml::array{ 1, 2, 3 } },
+			{ "foo1"sv, toml::array{ 1, 2, 3, 4 } },
+			{ "foo3"sv, toml::array{ 1, 2, 3, 4 } }
+		}});
+
+		t1.insert_or_assign("foo2", *t1["foo1"].node());
+		CHECK(t1 == toml::table{{
+			{ "bar1"sv, toml::array{ 1, 2, 3 } },
+			{ "foo1"sv, toml::array{ 1, 2, 3, 4 } },
+			{ "foo2"sv, toml::array{ 1, 2, 3, 4 } },
+			{ "foo3"sv, toml::array{ 1, 2, 3, 4 } }
+		}});
+
+		toml::array* array2 = t1["foo2"].node()->as_array();
+		array2->push_back("wrench");
+		CHECK(t1 == toml::table{{
+			{ "bar1"sv, toml::array{ 1, 2, 3 } },
+			{ "foo1"sv, toml::array{ 1, 2, 3, 4 } },
+			{ "foo2"sv, toml::array{ 1, 2, 3, 4, "wrench" } },
+			{ "foo3"sv, toml::array{ 1, 2, 3, 4 } }
+		}});
+
+		toml::table t2 = t1;
+		CHECK(t2 == t1);
+		CHECK(&t2 != &t1);
+
+		//t2.emplace("bar", toml::array{6, 7}); // fails to compile? not sure what I did wrong
+		// - it should be this: -
+		t2.emplace<toml::array>("bar", 6, 7);
+		CHECK(t2 == toml::table{{
+			{ "bar"sv, toml::array{ 6, 7 } },
+			{ "bar1"sv, toml::array{ 1, 2, 3 } },
+			{ "foo1"sv, toml::array{ 1, 2, 3, 4 } },
+			{ "foo2"sv, toml::array{ 1, 2, 3, 4, "wrench" } },
+			{ "foo3"sv, toml::array{ 1, 2, 3, 4 } }
+		}});
+
+		t2.insert_or_assign("bar2", toml::array{ 6, 7 });
+		CHECK(t2 == toml::table{{
+			{ "bar"sv, toml::array{ 6, 7 } },
+			{ "bar1"sv, toml::array{ 1, 2, 3 } },
+			{ "bar2"sv, toml::array{ 6, 7 } },
+			{ "foo1"sv, toml::array{ 1, 2, 3, 4 } },
+			{ "foo2"sv, toml::array{ 1, 2, 3, 4, "wrench" } },
+			{ "foo3"sv, toml::array{ 1, 2, 3, 4 } }
+		}});
+	}
+}

toml.hpp

@@ -1067,6 +1067,9 @@ TOML_IMPL_NAMESPACE_START
 	template <>           struct node_type_getter<array> { static constexpr auto value = node_type::array; };
 	template <typename T>
 	inline constexpr node_type node_type_of = node_type_getter<unwrap_node<remove_cvref_t<T>>>::value;
+
+	template <typename T>
+	inline constexpr bool is_node_view = is_one_of<impl::remove_cvref_t<T>, node_view<node>, node_view<const node>>;
 }
 TOML_IMPL_NAMESPACE_END
 
@@ -2026,7 +2029,7 @@ TOML_PUSH_WARNINGS
 TOML_DISABLE_PADDING_WARNINGS
 TOML_DISABLE_MISC_WARNINGS
 
-#if TOML_SIMPLE_STATIC_ASSERT_MESSAGES
+#if defined(doxygen) || TOML_SIMPLE_STATIC_ASSERT_MESSAGES
 
 #define TOML_SA_NEWLINE		" "
 #define TOML_SA_LIST_SEP	", "
@@ -3235,7 +3238,7 @@ TOML_IMPL_NAMESPACE_START
 	class TOML_TRIVIAL_ABI array_iterator final
 	{
 		private:
-			friend class ::toml::array;
+			friend class TOML_NAMESPACE::array;
 
 			using raw_mutable_iterator = std::vector<std::unique_ptr<node>>::iterator;
 			using raw_const_iterator = std::vector<std::unique_ptr<node>>::const_iterator;
@@ -3400,6 +3403,7 @@ TOML_IMPL_NAMESPACE_START
 	{
 		using type = unwrap_node<remove_cvref_t<T>>;
 		static_assert(!std::is_same_v<type, node>);
+		static_assert(!is_node_view<type>);
 
 		if constexpr (is_one_of<type, array, table>)
 		{
@@ -3431,12 +3435,17 @@ TOML_IMPL_NAMESPACE_START
 
 	template <typename T>
 	[[nodiscard]]
-	TOML_ATTR(returns_nonnull)
 	auto* make_node(T&& val) noexcept
 	{
 		using type = unwrap_node<remove_cvref_t<T>>;
-		if constexpr (std::is_same_v<type, node>)
+		if constexpr (std::is_same_v<type, node> || is_node_view<type>)
 		{
+			if constexpr (is_node_view<type>)
+			{
+				if (!val)
+					return static_cast<toml::node*>(nullptr);
+			}
+
 			return std::forward<T>(val).visit([](auto&& concrete) noexcept
 			{
 				return static_cast<toml::node*>(make_node_specialized(std::forward<decltype(concrete)>(concrete)));
@@ -3448,7 +3457,6 @@ TOML_IMPL_NAMESPACE_START
 
 	template <typename T>
 	[[nodiscard]]
-	TOML_ATTR(returns_nonnull)
 	auto* make_node(inserter<T>&& val) noexcept
 	{
 		return make_node(std::move(val.value));
@@ -3470,6 +3478,17 @@ TOML_NAMESPACE_START
 
 			void preinsertion_resize(size_t idx, size_t count) noexcept;
 
+			template <typename T>
+			void emplace_back_if_not_empty_view(T&& val) noexcept
+			{
+				if constexpr (impl::is_node_view<T>)
+				{
+					if (!val)
+						return;
+				}
+				elements.emplace_back(impl::make_node(std::forward<T>(val)));
+			}
+
 		public:
 
 			using value_type = node;
@@ -3499,11 +3518,11 @@ TOML_NAMESPACE_START
 			explicit array(ElemType&& val, ElemTypes&&... vals)
 			{
 				elements.reserve(sizeof...(ElemTypes) + 1_sz);
-				elements.emplace_back(impl::make_node(std::forward<ElemType>(val)));
+				emplace_back_if_not_empty_view(std::forward<ElemType>(val));
 				if constexpr (sizeof...(ElemTypes) > 0)
 				{
 					(
-						elements.emplace_back(impl::make_node(std::forward<ElemTypes>(vals))),
+						emplace_back_if_not_empty_view(std::forward<ElemTypes>(vals)),
 						...
 					);
 				}
@@ -3560,12 +3579,22 @@ TOML_NAMESPACE_START
 			template <typename ElemType>
 			iterator insert(const_iterator pos, ElemType&& val) noexcept
 			{
+				if constexpr (impl::is_node_view<ElemType>)
+				{
+					if (!val)
+						return end();
+				}
 				return { elements.emplace(pos.raw_, impl::make_node(std::forward<ElemType>(val))) };
 			}
 
 			template <typename ElemType>
 			iterator insert(const_iterator pos, size_t count, ElemType&& val) noexcept
 			{
+				if constexpr (impl::is_node_view<ElemType>)
+				{
+					if (!val)
+						return end();
+				}
 				switch (count)
 				{
 					case 0: return { elements.begin() + (pos.raw_ - elements.cbegin()) };
@@ -3587,18 +3616,36 @@ TOML_NAMESPACE_START
 			template <typename Iter>
 			iterator insert(const_iterator pos, Iter first, Iter last) noexcept
 			{
-				const auto count = std::distance(first, last);
-				if (count <= 0)
+				const auto distance = std::distance(first, last);
+				if (distance <= 0)
 					return { elements.begin() + (pos.raw_ - elements.cbegin()) };
-				else if (count == 1)
-					return insert(pos, *first);
 				else
 				{
+					auto count = distance;
+					using deref_type = decltype(*first);
+					if constexpr (impl::is_node_view<deref_type>)
+					{
+						for (auto it = first; it != last; it++)
+							if (!(*it))
+								count--;
+						if (!count)
+							return { elements.begin() + (pos.raw_ - elements.cbegin()) };
+					}
 					const auto start_idx = static_cast<size_t>(pos.raw_ - elements.cbegin());
 					preinsertion_resize(start_idx, static_cast<size_t>(count));
 					size_t i = start_idx;
 					for (auto it = first; it != last; it++)
-						elements[i++].reset(impl::make_node(*it));
+					{
+						if constexpr (impl::is_node_view<deref_type>)
+						{
+							if (!(*it))
+								continue;
+						}
+						if constexpr (std::is_rvalue_reference_v<deref_type>)
+							elements[i++].reset(impl::make_node(std::move(*it)));
+						else
+							elements[i++].reset(impl::make_node(*it));
+					}
 					return { elements.begin() + static_cast<ptrdiff_t>(start_idx) };
 				}
 			}
@@ -3606,20 +3653,7 @@ TOML_NAMESPACE_START
 			template <typename ElemType>
 			iterator insert(const_iterator pos, std::initializer_list<ElemType> ilist) noexcept
 			{
-				switch (ilist.size())
-				{
-					case 0: return { elements.begin() + (pos.raw_ - elements.cbegin()) };
-					case 1: return insert(pos, *ilist.begin());
-					default:
-					{
-						const auto start_idx = static_cast<size_t>(pos.raw_ - elements.cbegin());
-						preinsertion_resize(start_idx, ilist.size());
-						size_t i = start_idx;
-						for (auto& val : ilist)
-							elements[i++].reset(impl::make_node(val));
-						return { elements.begin() + static_cast<ptrdiff_t>(start_idx) };
-					}
-				}
+				return insert(pos, ilist.begin(), ilist.end());
 			}
 
 			template <typename ElemType, typename... Args>
@@ -3641,6 +3675,11 @@ TOML_NAMESPACE_START
 			template <typename ElemType>
 			void resize(size_t new_size, ElemType&& default_init_val) noexcept
 			{
+				static_assert(
+					!impl::is_node_view<ElemType>,
+					"The default element type argument to toml::array::resize may not be toml::node_view."
+				);
+
 				if (!new_size)
 					elements.clear();
 				else if (new_size < elements.size())
@@ -3652,11 +3691,9 @@ TOML_NAMESPACE_START
 			void truncate(size_t new_size);
 
 			template <typename ElemType>
-			decltype(auto) push_back(ElemType&& val) noexcept
+			void push_back(ElemType&& val) noexcept
 			{
-				auto nde = impl::make_node(std::forward<ElemType>(val));
-				elements.emplace_back(nde);
-				return *nde;
+				emplace_back_if_not_empty_view(std::forward<ElemType>(val));
 			}
 
 			template <typename ElemType, typename... Args>
@@ -3786,7 +3823,7 @@ TOML_IMPL_NAMESPACE_START
 	class table_iterator final
 	{
 		private:
-			friend class ::toml::table;
+			friend class TOML_NAMESPACE::table;
 
 			using proxy_type = table_proxy_pair<IsConst>;
 			using raw_mutable_iterator = string_map<std::unique_ptr<node>>::iterator;
@@ -4031,6 +4068,12 @@ TOML_NAMESPACE_START
 					"Insertion using wide-character keys is only supported on Windows with TOML_WINDOWS_COMPAT enabled."
 				);
 
+				if constexpr (impl::is_node_view<ValueType>)
+				{
+					if (!val)
+						return { end(), false };
+				}
+
 				if constexpr (impl::is_wide_string<KeyType>)
 				{
 					#if TOML_WINDOWS_COMPAT
@@ -4045,9 +4088,9 @@ TOML_NAMESPACE_START
 					if (ipos == map.end() || ipos->first != key)
 					{
 						ipos = map.emplace_hint(ipos, std::forward<KeyType>(key), impl::make_node(std::forward<ValueType>(val)));
-						return { ipos, true };
+						return { iterator{ ipos }, true };
 					}
-					return { ipos, false };
+					return { iterator{ ipos }, false };
 				}
 			}
 
@@ -4076,6 +4119,12 @@ TOML_NAMESPACE_START
 					"Insertion using wide-character keys is only supported on Windows with TOML_WINDOWS_COMPAT enabled."
 				);
 
+				if constexpr (impl::is_node_view<ValueType>)
+				{
+					if (!val)
+						return { end(), false };
+				}
+
 				if constexpr (impl::is_wide_string<KeyType>)
 				{
 					#if TOML_WINDOWS_COMPAT
@@ -4090,12 +4139,12 @@ TOML_NAMESPACE_START
 					if (ipos == map.end() || ipos->first != key)
 					{
 						ipos = map.emplace_hint(ipos, std::forward<KeyType>(key), impl::make_node(std::forward<ValueType>(val)));
-						return { ipos, true };
+						return { iterator{ ipos }, true };
 					}
 					else
 					{
 						(*ipos).second.reset(impl::make_node(std::forward<ValueType>(val)));
-						return { ipos, false };
+						return { iterator{ ipos }, false };
 					}
 				}
 			}
@@ -4134,9 +4183,9 @@ TOML_NAMESPACE_START
 							std::forward<KeyType>(key),
 							new impl::wrap_node<type>{ std::forward<ValueArgs>(args)... }
 						);
-						return { ipos, true };
+						return { iterator{ ipos }, true };
 					}
-					return { ipos, false };
+					return { iterator{ ipos }, false };
 				}
 			}
 
@@ -4274,8 +4323,8 @@ TOML_NAMESPACE_START
 			using viewed_type = ViewedType;
 
 		private:
-			friend class toml::table;
-			template <typename T> friend class toml::node_view;
+			friend class TOML_NAMESPACE::table;
+			template <typename T> friend class TOML_NAMESPACE::node_view;
 
 			mutable viewed_type* node_ = nullptr;
 
@@ -4292,6 +4341,16 @@ TOML_NAMESPACE_START
 
 			TOML_NODISCARD_CTOR
 			node_view() noexcept = default;
+
+			TOML_NODISCARD_CTOR
+			node_view(const node_view&) noexcept = default;
+
+			TOML_NODISCARD_CTOR
+			node_view& operator= (const node_view&) noexcept = default;
+
+			node_view(node_view&&) noexcept = default;
+
+			node_view& operator= (node_view&&) noexcept = delete;
 			[[nodiscard]] explicit operator bool() const noexcept { return node_ != nullptr; }
 			[[nodiscard]] viewed_type* node() const noexcept { return node_; }
 
@@ -7654,6 +7713,8 @@ TOML_NAMESPACE_START
 	{
 		for (size_t i = 0; i < count; i++)
 		{
+			if (!pairs[i].value) // empty node_views
+				continue;
 			map.insert_or_assign(
 				std::move(pairs[i].key),
 				std::move(pairs[i].value)

vs/tests/test_debug_x64.vcxproj

@@ -77,6 +77,7 @@
 		</ClCompile>
 		<ClCompile Include="..\..\tests\unicode.cpp" />
 		<ClCompile Include="..\..\tests\unicode_generated.cpp" />
+		<ClCompile Include="..\..\tests\user_feedback.cpp" />
 		<ClCompile Include="..\..\tests\windows_compat.cpp" />
 	</ItemGroup>
 	<ItemGroup>

vs/tests/test_debug_x64_cpplatest.vcxproj

@@ -77,6 +77,7 @@
 		</ClCompile>
 		<ClCompile Include="..\..\tests\unicode.cpp" />
 		<ClCompile Include="..\..\tests\unicode_generated.cpp" />
+		<ClCompile Include="..\..\tests\user_feedback.cpp" />
 		<ClCompile Include="..\..\tests\windows_compat.cpp" />
 	</ItemGroup>
 	<ItemGroup>

vs/tests/test_debug_x64_cpplatest_noexcept.vcxproj

@@ -77,6 +77,7 @@
 		</ClCompile>
 		<ClCompile Include="..\..\tests\unicode.cpp" />
 		<ClCompile Include="..\..\tests\unicode_generated.cpp" />
+		<ClCompile Include="..\..\tests\user_feedback.cpp" />
 		<ClCompile Include="..\..\tests\windows_compat.cpp" />
 	</ItemGroup>
 	<ItemGroup>

vs/tests/test_debug_x64_cpplatest_noexcept_unrel.vcxproj

@@ -77,6 +77,7 @@
 		</ClCompile>
 		<ClCompile Include="..\..\tests\unicode.cpp" />
 		<ClCompile Include="..\..\tests\unicode_generated.cpp" />
+		<ClCompile Include="..\..\tests\user_feedback.cpp" />
 		<ClCompile Include="..\..\tests\windows_compat.cpp" />
 	</ItemGroup>
 	<ItemGroup>

vs/tests/test_debug_x64_cpplatest_unrel.vcxproj

@@ -77,6 +77,7 @@
 		</ClCompile>
 		<ClCompile Include="..\..\tests\unicode.cpp" />
 		<ClCompile Include="..\..\tests\unicode_generated.cpp" />
+		<ClCompile Include="..\..\tests\user_feedback.cpp" />
 		<ClCompile Include="..\..\tests\windows_compat.cpp" />
 	</ItemGroup>
 	<ItemGroup>

vs/tests/test_debug_x64_noexcept.vcxproj

@@ -77,6 +77,7 @@
 		</ClCompile>
 		<ClCompile Include="..\..\tests\unicode.cpp" />
 		<ClCompile Include="..\..\tests\unicode_generated.cpp" />
+		<ClCompile Include="..\..\tests\user_feedback.cpp" />
 		<ClCompile Include="..\..\tests\windows_compat.cpp" />
 	</ItemGroup>
 	<ItemGroup>

vs/tests/test_debug_x64_noexcept_unrel.vcxproj

@@ -77,6 +77,7 @@
 		</ClCompile>
 		<ClCompile Include="..\..\tests\unicode.cpp" />
 		<ClCompile Include="..\..\tests\unicode_generated.cpp" />
+		<ClCompile Include="..\..\tests\user_feedback.cpp" />
 		<ClCompile Include="..\..\tests\windows_compat.cpp" />
 	</ItemGroup>
 	<ItemGroup>

vs/tests/test_debug_x64_unrel.vcxproj

@@ -77,6 +77,7 @@
 		</ClCompile>
 		<ClCompile Include="..\..\tests\unicode.cpp" />
 		<ClCompile Include="..\..\tests\unicode_generated.cpp" />
+		<ClCompile Include="..\..\tests\user_feedback.cpp" />
 		<ClCompile Include="..\..\tests\windows_compat.cpp" />
 	</ItemGroup>
 	<ItemGroup>

vs/tests/test_debug_x86.vcxproj

@@ -77,6 +77,7 @@
 		</ClCompile>
 		<ClCompile Include="..\..\tests\unicode.cpp" />
 		<ClCompile Include="..\..\tests\unicode_generated.cpp" />
+		<ClCompile Include="..\..\tests\user_feedback.cpp" />
 		<ClCompile Include="..\..\tests\windows_compat.cpp" />
 	</ItemGroup>
 	<ItemGroup>

vs/tests/test_debug_x86_cpplatest.vcxproj

@@ -77,6 +77,7 @@
 		</ClCompile>
 		<ClCompile Include="..\..\tests\unicode.cpp" />
 		<ClCompile Include="..\..\tests\unicode_generated.cpp" />
+		<ClCompile Include="..\..\tests\user_feedback.cpp" />
 		<ClCompile Include="..\..\tests\windows_compat.cpp" />
 	</ItemGroup>
 	<ItemGroup>

vs/tests/test_debug_x86_cpplatest_noexcept.vcxproj

@@ -77,6 +77,7 @@
 		</ClCompile>
 		<ClCompile Include="..\..\tests\unicode.cpp" />
 		<ClCompile Include="..\..\tests\unicode_generated.cpp" />
+		<ClCompile Include="..\..\tests\user_feedback.cpp" />
 		<ClCompile Include="..\..\tests\windows_compat.cpp" />
 	</ItemGroup>
 	<ItemGroup>

vs/tests/test_debug_x86_cpplatest_noexcept_unrel.vcxproj

@@ -77,6 +77,7 @@
 		</ClCompile>
 		<ClCompile Include="..\..\tests\unicode.cpp" />
 		<ClCompile Include="..\..\tests\unicode_generated.cpp" />
+		<ClCompile Include="..\..\tests\user_feedback.cpp" />
 		<ClCompile Include="..\..\tests\windows_compat.cpp" />
 	</ItemGroup>
 	<ItemGroup>

vs/tests/test_debug_x86_cpplatest_unrel.vcxproj

@@ -77,6 +77,7 @@
 		</ClCompile>
 		<ClCompile Include="..\..\tests\unicode.cpp" />
 		<ClCompile Include="..\..\tests\unicode_generated.cpp" />
+		<ClCompile Include="..\..\tests\user_feedback.cpp" />
 		<ClCompile Include="..\..\tests\windows_compat.cpp" />
 	</ItemGroup>
 	<ItemGroup>

vs/tests/test_debug_x86_noexcept.vcxproj

@@ -77,6 +77,7 @@
 		</ClCompile>
 		<ClCompile Include="..\..\tests\unicode.cpp" />
 		<ClCompile Include="..\..\tests\unicode_generated.cpp" />
+		<ClCompile Include="..\..\tests\user_feedback.cpp" />
 		<ClCompile Include="..\..\tests\windows_compat.cpp" />
 	</ItemGroup>
 	<ItemGroup>

vs/tests/test_debug_x86_noexcept_unrel.vcxproj

@@ -77,6 +77,7 @@
 		</ClCompile>
 		<ClCompile Include="..\..\tests\unicode.cpp" />
 		<ClCompile Include="..\..\tests\unicode_generated.cpp" />
+		<ClCompile Include="..\..\tests\user_feedback.cpp" />
 		<ClCompile Include="..\..\tests\windows_compat.cpp" />
 	</ItemGroup>
 	<ItemGroup>

vs/tests/test_debug_x86_unrel.vcxproj

@@ -77,6 +77,7 @@
 		</ClCompile>
 		<ClCompile Include="..\..\tests\unicode.cpp" />
 		<ClCompile Include="..\..\tests\unicode_generated.cpp" />
+		<ClCompile Include="..\..\tests\user_feedback.cpp" />
 		<ClCompile Include="..\..\tests\windows_compat.cpp" />
 	</ItemGroup>
 	<ItemGroup>

vs/tests/test_release_x64.vcxproj

@@ -77,6 +77,7 @@
 		</ClCompile>
 		<ClCompile Include="..\..\tests\unicode.cpp" />
 		<ClCompile Include="..\..\tests\unicode_generated.cpp" />
+		<ClCompile Include="..\..\tests\user_feedback.cpp" />
 		<ClCompile Include="..\..\tests\windows_compat.cpp" />
 	</ItemGroup>
 	<ItemGroup>

vs/tests/test_release_x64_cpplatest.vcxproj

@@ -77,6 +77,7 @@
 		</ClCompile>
 		<ClCompile Include="..\..\tests\unicode.cpp" />
 		<ClCompile Include="..\..\tests\unicode_generated.cpp" />
+		<ClCompile Include="..\..\tests\user_feedback.cpp" />
 		<ClCompile Include="..\..\tests\windows_compat.cpp" />
 	</ItemGroup>
 	<ItemGroup>

vs/tests/test_release_x64_cpplatest_noexcept.vcxproj

@@ -77,6 +77,7 @@
 		</ClCompile>
 		<ClCompile Include="..\..\tests\unicode.cpp" />
 		<ClCompile Include="..\..\tests\unicode_generated.cpp" />
+		<ClCompile Include="..\..\tests\user_feedback.cpp" />
 		<ClCompile Include="..\..\tests\windows_compat.cpp" />
 	</ItemGroup>
 	<ItemGroup>

vs/tests/test_release_x64_cpplatest_noexcept_unrel.vcxproj

@@ -77,6 +77,7 @@
 		</ClCompile>
 		<ClCompile Include="..\..\tests\unicode.cpp" />
 		<ClCompile Include="..\..\tests\unicode_generated.cpp" />
+		<ClCompile Include="..\..\tests\user_feedback.cpp" />
 		<ClCompile Include="..\..\tests\windows_compat.cpp" />
 	</ItemGroup>
 	<ItemGroup>

vs/tests/test_release_x64_cpplatest_unrel.vcxproj

@@ -77,6 +77,7 @@
 		</ClCompile>
 		<ClCompile Include="..\..\tests\unicode.cpp" />
 		<ClCompile Include="..\..\tests\unicode_generated.cpp" />
+		<ClCompile Include="..\..\tests\user_feedback.cpp" />
 		<ClCompile Include="..\..\tests\windows_compat.cpp" />
 	</ItemGroup>
 	<ItemGroup>

vs/tests/test_release_x64_noexcept.vcxproj

@@ -77,6 +77,7 @@
 		</ClCompile>
 		<ClCompile Include="..\..\tests\unicode.cpp" />
 		<ClCompile Include="..\..\tests\unicode_generated.cpp" />
+		<ClCompile Include="..\..\tests\user_feedback.cpp" />
 		<ClCompile Include="..\..\tests\windows_compat.cpp" />
 	</ItemGroup>
 	<ItemGroup>

vs/tests/test_release_x64_noexcept_unrel.vcxproj

@@ -77,6 +77,7 @@
 		</ClCompile>
 		<ClCompile Include="..\..\tests\unicode.cpp" />
 		<ClCompile Include="..\..\tests\unicode_generated.cpp" />
+		<ClCompile Include="..\..\tests\user_feedback.cpp" />
 		<ClCompile Include="..\..\tests\windows_compat.cpp" />
 	</ItemGroup>
 	<ItemGroup>

vs/tests/test_release_x64_unrel.vcxproj

@@ -77,6 +77,7 @@
 		</ClCompile>
 		<ClCompile Include="..\..\tests\unicode.cpp" />
 		<ClCompile Include="..\..\tests\unicode_generated.cpp" />
+		<ClCompile Include="..\..\tests\user_feedback.cpp" />
 		<ClCompile Include="..\..\tests\windows_compat.cpp" />
 	</ItemGroup>
 	<ItemGroup>

vs/tests/test_release_x86.vcxproj

@@ -77,6 +77,7 @@
 		</ClCompile>
 		<ClCompile Include="..\..\tests\unicode.cpp" />
 		<ClCompile Include="..\..\tests\unicode_generated.cpp" />
+		<ClCompile Include="..\..\tests\user_feedback.cpp" />
 		<ClCompile Include="..\..\tests\windows_compat.cpp" />
 	</ItemGroup>
 	<ItemGroup>

vs/tests/test_release_x86_cpplatest.vcxproj

@@ -77,6 +77,7 @@
 		</ClCompile>
 		<ClCompile Include="..\..\tests\unicode.cpp" />
 		<ClCompile Include="..\..\tests\unicode_generated.cpp" />
+		<ClCompile Include="..\..\tests\user_feedback.cpp" />
 		<ClCompile Include="..\..\tests\windows_compat.cpp" />
 	</ItemGroup>
 	<ItemGroup>

vs/tests/test_release_x86_cpplatest_noexcept.vcxproj

@@ -77,6 +77,7 @@
 		</ClCompile>
 		<ClCompile Include="..\..\tests\unicode.cpp" />
 		<ClCompile Include="..\..\tests\unicode_generated.cpp" />
+		<ClCompile Include="..\..\tests\user_feedback.cpp" />
 		<ClCompile Include="..\..\tests\windows_compat.cpp" />
 	</ItemGroup>
 	<ItemGroup>

vs/tests/test_release_x86_cpplatest_noexcept_unrel.vcxproj

@@ -77,6 +77,7 @@
 		</ClCompile>
 		<ClCompile Include="..\..\tests\unicode.cpp" />
 		<ClCompile Include="..\..\tests\unicode_generated.cpp" />
+		<ClCompile Include="..\..\tests\user_feedback.cpp" />
 		<ClCompile Include="..\..\tests\windows_compat.cpp" />
 	</ItemGroup>
 	<ItemGroup>

vs/tests/test_release_x86_cpplatest_unrel.vcxproj

@@ -77,6 +77,7 @@
 		</ClCompile>
 		<ClCompile Include="..\..\tests\unicode.cpp" />
 		<ClCompile Include="..\..\tests\unicode_generated.cpp" />
+		<ClCompile Include="..\..\tests\user_feedback.cpp" />
 		<ClCompile Include="..\..\tests\windows_compat.cpp" />
 	</ItemGroup>
 	<ItemGroup>

vs/tests/test_release_x86_noexcept.vcxproj

@@ -77,6 +77,7 @@
 		</ClCompile>
 		<ClCompile Include="..\..\tests\unicode.cpp" />
 		<ClCompile Include="..\..\tests\unicode_generated.cpp" />
+		<ClCompile Include="..\..\tests\user_feedback.cpp" />
 		<ClCompile Include="..\..\tests\windows_compat.cpp" />
 	</ItemGroup>
 	<ItemGroup>

vs/tests/test_release_x86_noexcept_unrel.vcxproj

@@ -77,6 +77,7 @@
 		</ClCompile>
 		<ClCompile Include="..\..\tests\unicode.cpp" />
 		<ClCompile Include="..\..\tests\unicode_generated.cpp" />
+		<ClCompile Include="..\..\tests\user_feedback.cpp" />
 		<ClCompile Include="..\..\tests\windows_compat.cpp" />
 	</ItemGroup>
 	<ItemGroup>

vs/tests/test_release_x86_unrel.vcxproj

@@ -77,6 +77,7 @@
 		</ClCompile>
 		<ClCompile Include="..\..\tests\unicode.cpp" />
 		<ClCompile Include="..\..\tests\unicode_generated.cpp" />
+		<ClCompile Include="..\..\tests\user_feedback.cpp" />
 		<ClCompile Include="..\..\tests\windows_compat.cpp" />
 	</ItemGroup>
 	<ItemGroup>