19 #include <type_traits>
21 #include <bsoncxx/document/value-fwd.hpp>
23 #include <bsoncxx/array/view.hpp>
24 #include <bsoncxx/document/view.hpp>
25 #include <bsoncxx/stdx/type_traits.hpp>
27 #include <bsoncxx/config/prelude.hpp>
40 using deleter_type = void (*)(std::uint8_t*);
41 using unique_ptr_type = std::unique_ptr<uint8_t[], deleter_type>;
92 template <typename T, detail::requires_not_t<
int, std::is_same<T, array::
view>> = 0>
97 value& operator=(
const T& t) {
156 const std::uint8_t*
data()
const;
186 BSONCXX_INLINE operator document::
view() const noexcept;
195 template <typename T>
198 from_bson(temp, this->
view());
211 template <
typename T>
213 from_bson(t, this->
view());
234 unique_ptr_type _data;
235 std::size_t _length{0};
240 BSONCXX_PUSH_WARNINGS();
241 BSONCXX_DISABLE_WARNING(GCC(
"-Wmaybe-uninitialized"));
242 return document::view{
static_cast<uint8_t*
>(_data.get()), _length};
243 BSONCXX_POP_WARNINGS();
261 BSONCXX_INLINE
bool operator!=(
const value& lhs,
const value& rhs) {
262 return !(lhs == rhs);
276 using ::bsoncxx::v_noabi::document::operator==;
277 using ::bsoncxx::v_noabi::document::operator!=;
282 #include <bsoncxx/config/postlude.hpp>
A variant view type that accesses values in serialized BSON documents.
Definition: element.hpp:45
A read-only BSON document that owns its underlying buffer.
Definition: value.hpp:38
value(std::uint8_t *data, std::size_t length, deleter_type dtor)
Constructs a value from a buffer.
T get()
Constructs an object of type T from this document object.
Definition: value.hpp:196
element operator[](stdx::string_view key) const
Finds the first element of the document with the provided key.
std::size_t length() const
Gets the length of the underlying buffer.
document::view::const_iterator begin() const
value(unique_ptr_type ptr, std::size_t length)
Constructs a value from a std::unique_ptr to a buffer.
document::view::const_iterator find(stdx::string_view key) const
Finds the first element of the document with the provided key.
document::view::const_iterator cbegin() const
bool empty() const
Checks if the underlying document is empty, i.e.
unique_ptr_type release()
Transfer ownership of the underlying buffer to the caller.
void get(T &t)
Constructs an object of type T from this document object.
Definition: value.hpp:212
bool operator==(const value &lhs, const value &rhs)
Compares two document values for (in)-equality.
Definition: value.hpp:257
document::view view() const noexcept
Get a view over the document owned by this value.
Definition: value.hpp:238
document::view::const_iterator end() const
document::view::const_iterator cend() const
void reset(document::view view)
Replace the formerly-owned buffer with the new view.
const std::uint8_t * data() const
Access the raw bytes of the underlying document.
value(document::view view)
Constructs a value from a view of a document.
A const iterator over the contents of a document view.
Definition: view.hpp:155
A read-only, non-owning view of a BSON document.
Definition: view.hpp:35
The top-level namespace for bsoncxx library entities.
Definition: element-fwd.hpp:19