#include <bsoncxx/v_noabi/bsoncxx/vector/accessor.hpp>

Description

template<typename Format>
class bsoncxx::v_noabi::vector::accessor< Format >

Accessor for the contents of a valid BSON Binary Vector.

Template Parameters

Format One of the bsoncxx::v_noabi::vector::formats types, optionally with a const qualifier.

This accessor operates on data formatted for the bsoncxx::v_noabi::binary_sub_type::k_vector BSON binary subtype. A mutable accessor may be constructed only using bsoncxx::v_noabi::builder::basic::sub_binary. A const accessor may be constructed by validating any bsoncxx::v_noabi::types::b_binary.

The specific iterator and element types vary for each supported format.

bsoncxx::v_noabi::vector::formats::f_float32 uses a custom element type to support packed storage with a fixed byte order.

bsoncxx::v_noabi::vector::formats::f_packed_bit uses a custom element and iterator type for single bits that unpacks them as bool. It also has custom element and iterator types for byte access, which serve to mask writes to reserved bits.

Public Types
using	byte_count_type = typename detail::accessor_data< format >::byte_count_type
	Type for byte counts.

using	byte_difference_type = typename format_traits::byte_difference_type
	Type for signed differences between byte iterators.

using	byte_iterator = typename std::conditional< std::is_const< Format >::value, typename format_traits::const_byte_iterator, typename format_traits::byte_iterator >::type
	Byte iterator type.

using	byte_reference = typename std::conditional< std::is_const< Format >::value, typename format_traits::const_byte_reference, typename format_traits::byte_reference >::type
	Type for referencing vector bytes in-place.

using	byte_type = typename detail::accessor_data< format >::byte_type
	Type for the underlying byte data.

using	const_byte_iterator = typename format_traits::const_byte_iterator
	Iterator for const-qualified vector bytes.

using	const_byte_reference = typename format_traits::const_byte_reference
	Type for referencing const-qualified vector bytes in-place.

using	const_iterator = typename format_traits::const_iterator
	Iterator for const-qualified vector elements.

using	const_reference = typename format_traits::const_reference
	Type for referencing const-qualified vector elements in-place.

using	const_value_type = typename format_traits::value_type const
	Const qualified version of value_type.

using	element_count_type = typename format_traits::element_count_type
	Type for element counts.

using	element_difference_type = typename format_traits::element_difference_type
	Type for signed differences between element iterators.

using	format = Format
	The type from bsoncxx::v_noabi::vector::formats representing this vector's layout and element type.

using	iterator = typename std::conditional< std::is_const< Format >::value, typename format_traits::const_iterator, typename format_traits::iterator >::type
	Element iterator type.

using	reference = typename std::conditional< std::is_const< Format >::value, typename format_traits::const_reference, typename format_traits::reference >::type
	Type for referencing vector elements in-place.

using	value_type = typename std::conditional< std::is_const< Format >::value, typename format_traits::value_type const, typename format_traits::value_type >::type
	A type suitable for holding element values.

Public Member Functions
	accessor (types::b_binary const &binary)
	Construct a const vector accessor by validating a bsoncxx::v_noabi::types::b_binary reference.

constexpr accessor< format const >	as_const () const noexcept
	Obtain a const version of this vector accessor, without re-validating the vector data.

reference	at (element_count_type index)
	Obtain a reference to a numbered element, with bounds checking.

const_reference	at (element_count_type index) const
	Obtain a const reference to a numbered element, with bounds checking.

constexpr const_reference	back () const noexcept
	Obtain a const reference to the last element.

reference	back () noexcept
	Obtain a reference to the last element.

constexpr iterator	begin () const noexcept
	Obtain a per-element iterator pointing to the beginning of the vector.

byte_reference	byte_at (byte_count_type index)
	Obtain a reference to a numbered byte, with bounds checking.

const_byte_reference	byte_at (byte_count_type index) const
	Obtain a const reference to a numbered byte, with bounds checking.

constexpr const_byte_reference	byte_back () const noexcept
	Obtain a const reference to the last byte.

byte_reference	byte_back () noexcept
	Obtain a reference to the last byte.

constexpr byte_iterator	byte_begin () const noexcept
	Obtain a per-byte iterator pointing to the beginning of the vector.

constexpr const_byte_iterator	byte_cbegin () const noexcept
	Obtain a const per-byte iterator pointing to the beginning of the vector.

constexpr const_byte_iterator	byte_cend () const noexcept
	Obtain a const per-byte end iterator.

constexpr byte_iterator	byte_end () const noexcept
	Obtain a per-byte end iterator.

constexpr const_byte_reference	byte_front () const noexcept
	Obtain a const reference to the first byte.

byte_reference	byte_front () noexcept
	Obtain a reference to the first byte.

constexpr byte_count_type	byte_size () const noexcept
	Count the bytes of element data, not including any headers.

constexpr const_iterator	cbegin () const noexcept
	Obtain a const per-element iterator pointing to the beginning of the vector.

constexpr const_iterator	cend () const noexcept
	Obtain a const per-element end iterator.

constexpr bool	empty () const noexcept
	Test whether the vector is empty.

constexpr iterator	end () const noexcept
	Obtain a per-element end iterator.

constexpr const_reference	front () const noexcept
	Obtain a const reference to the first element.

reference	front () noexcept
	Obtain a reference to the first element.

constexpr const_reference	operator[] (element_count_type index) const noexcept
	Obtain a const reference to a numbered element, without bounds checking.

reference	operator[] (element_count_type index) noexcept
	Obtain a reference to a numbered element, without bounds checking.

constexpr element_count_type	size () const noexcept
	Count the number of elements.

Friends
class	bsoncxx::v_noabi::builder::basic::sub_binary

Member Typedef Documentation

◆ byte_count_type

template<typename Format >

using bsoncxx::v_noabi::vector::accessor< Format >::byte_count_type = typename detail::accessor_data<format>::byte_count_type

Type for byte counts.

For example: std::uint32_t, due to BSON size limits.

◆ byte_difference_type

template<typename Format >

using bsoncxx::v_noabi::vector::accessor< Format >::byte_difference_type = typename format_traits::byte_difference_type

Type for signed differences between byte iterators.

For example: std::ptrdiff_t

◆ byte_iterator

template<typename Format >

using bsoncxx::v_noabi::vector::accessor< Format >::byte_iterator = typename std::conditional< std::is_const<Format>::value, typename format_traits::const_byte_iterator, typename format_traits::byte_iterator>::type

Byte iterator type.

For example: std::uint8_t*, std::uint8_t const*, bsoncxx::v_noabi::vector::iterators::packed_bit_byte

◆ byte_reference

template<typename Format >

using bsoncxx::v_noabi::vector::accessor< Format >::byte_reference = typename std::conditional< std::is_const<Format>::value, typename format_traits::const_byte_reference, typename format_traits::byte_reference>::type

Type for referencing vector bytes in-place.

For example: std::uint8_t&, std::uint8_t const&, bsoncxx::v_noabi::vector::elements::packed_bit_byte

◆ byte_type

template<typename Format >

using bsoncxx::v_noabi::vector::accessor< Format >::byte_type = typename detail::accessor_data<format>::byte_type

Type for the underlying byte data.

For example: std::uint8_t, std::uint8_t const

◆ const_byte_iterator

template<typename Format >

using bsoncxx::v_noabi::vector::accessor< Format >::const_byte_iterator = typename format_traits::const_byte_iterator

Iterator for const-qualified vector bytes.

◆ const_byte_reference

template<typename Format >

using bsoncxx::v_noabi::vector::accessor< Format >::const_byte_reference = typename format_traits::const_byte_reference

Type for referencing const-qualified vector bytes in-place.

◆ const_iterator

template<typename Format >

using bsoncxx::v_noabi::vector::accessor< Format >::const_iterator = typename format_traits::const_iterator

Iterator for const-qualified vector elements.

◆ const_reference

template<typename Format >

using bsoncxx::v_noabi::vector::accessor< Format >::const_reference = typename format_traits::const_reference

Type for referencing const-qualified vector elements in-place.

◆ const_value_type

template<typename Format >

using bsoncxx::v_noabi::vector::accessor< Format >::const_value_type = typename format_traits::value_type const

Const qualified version of value_type.

◆ element_count_type

template<typename Format >

using bsoncxx::v_noabi::vector::accessor< Format >::element_count_type = typename format_traits::element_count_type

Type for element counts.

For example: std::size_t

◆ element_difference_type

template<typename Format >

using bsoncxx::v_noabi::vector::accessor< Format >::element_difference_type = typename format_traits::element_difference_type

Type for signed differences between element iterators.

For example: std::ptrdiff_t

◆ format

template<typename Format >

using bsoncxx::v_noabi::vector::accessor< Format >::format = Format

The type from bsoncxx::v_noabi::vector::formats representing this vector's layout and element type.

◆ iterator

template<typename Format >

using bsoncxx::v_noabi::vector::accessor< Format >::iterator = typename std::conditional< std::is_const<Format>::value, typename format_traits::const_iterator, typename format_traits::iterator>::type

Element iterator type.

For example: std::int8_t*, bsoncxx::v_noabi::vector::elements::float32*, bsoncxx::v_noabi::vector::iterators::packed_bit_element

◆ reference

template<typename Format >

using bsoncxx::v_noabi::vector::accessor< Format >::reference = typename std::conditional< std::is_const<Format>::value, typename format_traits::const_reference, typename format_traits::reference>::type

Type for referencing vector elements in-place.

For example: std::int8_t&, bsoncxx::v_noabi::vector::elements::float32&, bsoncxx::v_noabi::vector::elements::packed_bit_element

◆ value_type

template<typename Format >

using bsoncxx::v_noabi::vector::accessor< Format >::value_type = typename std::conditional< std::is_const<Format>::value, typename format_traits::value_type const, typename format_traits::value_type>::type

A type suitable for holding element values.

For example: std::int8_t, float, bool

Constructor & Destructor Documentation

◆ accessor()

template<typename Format >

bsoncxx::v_noabi::vector::accessor< Format >::accessor ( types::b_binary const & binary )

inline

Construct a const vector accessor by validating a bsoncxx::v_noabi::types::b_binary reference.

Parameters

binary Non-owning reference to BSON binary data

Exceptions

bsoncxx::v_noabi::exception with bsoncxx::v_noabi::error_code::k_invalid_vector, if validation fails.

The Binary data is validated as a vector of the templated Format. On success, an accessor is created which references the same data as the bsoncxx::v_noabi::types::b_binary pointer.

Member Function Documentation

◆ as_const()

template<typename Format >

constexpr accessor< format const > bsoncxx::v_noabi::vector::accessor< Format >::as_const ( ) const

inlineconstexprnoexcept

Obtain a const version of this vector accessor, without re-validating the vector data.

◆ at() [1/2]

template<typename Format >

reference bsoncxx::v_noabi::vector::accessor< Format >::at ( element_count_type index )

inline

Obtain a reference to a numbered element, with bounds checking.

Parameters

index Index in the range 0 to size()-1 inclusive.

Exceptions

bsoncxx::v_noabi::exception with bsoncxx::v_noabi::error_code::k_vector_out_of_range, if the index is outside the allowed range.

◆ at() [2/2]

template<typename Format >

const_reference bsoncxx::v_noabi::vector::accessor< Format >::at ( element_count_type index ) const

inline

Obtain a const reference to a numbered element, with bounds checking.

Parameters

index Index in the range 0 to size()-1 inclusive.

Exceptions

bsoncxx::v_noabi::exception with bsoncxx::v_noabi::error_code::k_vector_out_of_range, if the index is outside the allowed range.

◆ back() [1/2]

template<typename Format >

constexpr const_reference bsoncxx::v_noabi::vector::accessor< Format >::back ( ) const

inlineconstexprnoexcept

Obtain a const reference to the last element.

Warning: Undefined behavior if the vector is empty.

◆ back() [2/2]

template<typename Format >

reference bsoncxx::v_noabi::vector::accessor< Format >::back ( )

inlinenoexcept

Obtain a reference to the last element.

Warning: Undefined behavior if the vector is empty.

◆ begin()

template<typename Format >

constexpr iterator bsoncxx::v_noabi::vector::accessor< Format >::begin ( ) const

inlineconstexprnoexcept

Obtain a per-element iterator pointing to the beginning of the vector.

◆ byte_at() [1/2]

template<typename Format >

byte_reference bsoncxx::v_noabi::vector::accessor< Format >::byte_at ( byte_count_type index )

inline

Obtain a reference to a numbered byte, with bounds checking.

Parameters

index Index in the range 0 to byte_size()-1 inclusive.

Exceptions

bsoncxx::v_noabi::exception with bsoncxx::v_noabi::error_code::k_vector_out_of_range, if the index is outside the allowed range.

◆ byte_at() [2/2]

template<typename Format >

const_byte_reference bsoncxx::v_noabi::vector::accessor< Format >::byte_at ( byte_count_type index ) const

inline

Obtain a const reference to a numbered byte, with bounds checking.

Parameters

index Index in the range 0 to byte_size()-1 inclusive.

Exceptions

bsoncxx::v_noabi::exception with bsoncxx::v_noabi::error_code::k_vector_out_of_range, if the index is outside the allowed range.

◆ byte_back() [1/2]

template<typename Format >

constexpr const_byte_reference bsoncxx::v_noabi::vector::accessor< Format >::byte_back ( ) const

inlineconstexprnoexcept

Obtain a const reference to the last byte.

Warning: Undefined behavior if the vector is empty.

◆ byte_back() [2/2]

template<typename Format >

byte_reference bsoncxx::v_noabi::vector::accessor< Format >::byte_back ( )

inlinenoexcept

Obtain a reference to the last byte.

Warning: Undefined behavior if the vector is empty.

◆ byte_begin()

template<typename Format >

constexpr byte_iterator bsoncxx::v_noabi::vector::accessor< Format >::byte_begin ( ) const

inlineconstexprnoexcept

Obtain a per-byte iterator pointing to the beginning of the vector.

◆ byte_cbegin()

template<typename Format >

constexpr const_byte_iterator bsoncxx::v_noabi::vector::accessor< Format >::byte_cbegin ( ) const

inlineconstexprnoexcept

Obtain a const per-byte iterator pointing to the beginning of the vector.

◆ byte_cend()

template<typename Format >

constexpr const_byte_iterator bsoncxx::v_noabi::vector::accessor< Format >::byte_cend ( ) const

inlineconstexprnoexcept

Obtain a const per-byte end iterator.

◆ byte_end()

template<typename Format >

constexpr byte_iterator bsoncxx::v_noabi::vector::accessor< Format >::byte_end ( ) const

inlineconstexprnoexcept

Obtain a per-byte end iterator.

◆ byte_front() [1/2]

template<typename Format >

constexpr const_byte_reference bsoncxx::v_noabi::vector::accessor< Format >::byte_front ( ) const

inlineconstexprnoexcept

Obtain a const reference to the first byte.

Warning: Undefined behavior if the vector is empty.

◆ byte_front() [2/2]

template<typename Format >

byte_reference bsoncxx::v_noabi::vector::accessor< Format >::byte_front ( )

inlinenoexcept

Obtain a reference to the first byte.

Warning: Undefined behavior if the vector is empty.

◆ byte_size()

template<typename Format >

constexpr byte_count_type bsoncxx::v_noabi::vector::accessor< Format >::byte_size ( ) const

inlineconstexprnoexcept

Count the bytes of element data, not including any headers.

◆ cbegin()

template<typename Format >

constexpr const_iterator bsoncxx::v_noabi::vector::accessor< Format >::cbegin ( ) const

inlineconstexprnoexcept

Obtain a const per-element iterator pointing to the beginning of the vector.

◆ cend()

template<typename Format >

constexpr const_iterator bsoncxx::v_noabi::vector::accessor< Format >::cend ( ) const

inlineconstexprnoexcept

Obtain a const per-element end iterator.

◆ empty()

template<typename Format >

constexpr bool bsoncxx::v_noabi::vector::accessor< Format >::empty ( ) const

inlineconstexprnoexcept

Test whether the vector is empty.

◆ end()

template<typename Format >

constexpr iterator bsoncxx::v_noabi::vector::accessor< Format >::end ( ) const

inlineconstexprnoexcept

Obtain a per-element end iterator.

◆ front() [1/2]

template<typename Format >

constexpr const_reference bsoncxx::v_noabi::vector::accessor< Format >::front ( ) const

inlineconstexprnoexcept

Obtain a const reference to the first element.

Warning: Undefined behavior if the vector is empty.

◆ front() [2/2]

template<typename Format >

reference bsoncxx::v_noabi::vector::accessor< Format >::front ( )

inlinenoexcept

Obtain a reference to the first element.

Warning: Undefined behavior if the vector is empty.

◆ operator[]() [1/2]

template<typename Format >

constexpr const_reference bsoncxx::v_noabi::vector::accessor< Format >::operator[] ( element_count_type index ) const

inlineconstexprnoexcept

Obtain a const reference to a numbered element, without bounds checking.

Parameters

index Index in the range 0 to size()-1 inclusive.

Warning: Undefined behavior if the index is out of bounds.

◆ operator[]() [2/2]

template<typename Format >

reference bsoncxx::v_noabi::vector::accessor< Format >::operator[] ( element_count_type index )

inlinenoexcept

Obtain a reference to a numbered element, without bounds checking.

Parameters

index Index in the range 0 to size()-1 inclusive.

Warning: Undefined behavior if the index is out of bounds.

◆ size()

template<typename Format >

constexpr element_count_type bsoncxx::v_noabi::vector::accessor< Format >::size ( ) const

inlineconstexprnoexcept

Count the number of elements.

The documentation for this class was generated from the following files:

bsoncxx/v_noabi/bsoncxx/vector/accessor-fwd.hpp
bsoncxx/v_noabi/bsoncxx/vector/accessor.hpp

Description

Public Types

Public Member Functions

Friends

Member Typedef Documentation

◆ byte_count_type

◆ byte_difference_type

◆ byte_iterator

◆ byte_reference

◆ byte_type

◆ const_byte_iterator

◆ const_byte_reference

◆ const_iterator

◆ const_reference

◆ const_value_type

◆ element_count_type

◆ element_difference_type

◆ format

◆ iterator

◆ reference

◆ value_type

Constructor & Destructor Documentation

◆ accessor()

Member Function Documentation

◆ as_const()

◆ at() [1/2]

◆ at() [2/2]

◆ back() [1/2]

◆ back() [2/2]

◆ begin()

◆ byte_at() [1/2]

◆ byte_at() [2/2]

◆ byte_back() [1/2]

◆ byte_back() [2/2]

◆ byte_begin()

◆ byte_cbegin()

◆ byte_cend()

◆ byte_end()

◆ byte_front() [1/2]

◆ byte_front() [2/2]

◆ byte_size()

◆ cbegin()

◆ cend()

◆ empty()

◆ end()

◆ front() [1/2]

◆ front() [2/2]

◆ operator[]() [1/2]

◆ operator[]() [2/2]

◆ size()