#include <Span.h>

Public Types
using	element_type = T

using	value_type = typename std::remove_cv< T >::type

using	size_type = std::size_t

using	difference_type = std::ptrdiff_t

using	pointer = T *

using	const_pointer = const T *

using	reference = T &

using	iterator = pointer

using	const_iterator = const_pointer

using	reverse_iterator = std::reverse_iterator< iterator >

using	const_reverse_iterator = std::reverse_iterator< const_iterator >

template<size_type Offset, size_type Count>
using	SubspanReturnType = Span< T, Count !=dynamic_extent ? Count :(Extent !=dynamic_extent ? Extent - Offset :dynamic_extent)>

Public Member Functions
template<size_type ext = Extent, typename std::enable_if<(ext==0\|\|ext==dynamic_extent), int >::type = 0>
constexpr	Span () noexcept

constexpr	Span (pointer first_, size_type count)

constexpr	Span (pointer first_, pointer last_)

template<size_type N, size_type ext = Extent, typename std::enable_if<(ext==dynamic_extent\|\|ext==N), int >::type = 0>
constexpr	Span (element_type(&arr)[N]) noexcept

template<typename U , size_type N, size_type ext = Extent, typename std::enable_if<(ext==dynamic_extent\|\|ext==N) &&std::is_convertible< U()[], T()[]>::value, int >::type = 0>
constexpr	Span (std::array< U, N > &arr) noexcept

template<typename U , size_type N, size_type ext = Extent, typename std::enable_if<(ext==dynamic_extent\|\|ext==N) &&std::is_convertible< const U()[], T()[]>::value, int >::type = 0>
constexpr	Span (const std::array< U, N > &arr) noexcept

template<typename U , typename ALLOC , size_type ext = Extent, typename std::enable_if<(ext==dynamic_extent) &&std::is_convertible< U()[], T()[]>::value, int >::type = 0>
constexpr	Span (std::vector< U, ALLOC > &vec)

template<typename U , typename ALLOC , size_type ext = Extent, typename std::enable_if<(ext==dynamic_extent) &&std::is_convertible< const U()[], T()[]>::value, int >::type = 0>
constexpr	Span (const std::vector< U, ALLOC > &vec)

template<typename U , size_type N, typename std::enable_if<(Extent==N\|\|Extent==dynamic_extent) &&std::is_convertible< U()[], T()[]>::value, int >::type = 0>
constexpr	Span (const Span< U, N > &span) noexcept

constexpr iterator	begin () const noexcept

constexpr iterator	end () const noexcept

constexpr reverse_iterator	rbegin () const noexcept

constexpr reverse_iterator	rend () const noexcept

constexpr reference	front () const

constexpr reference	back () const

constexpr reference	operator[] (size_type idx) const

constexpr pointer	data () const noexcept

constexpr size_type	size () const noexcept

constexpr size_type	size_bytes () const noexcept

constexpr bool	empty () const noexcept

template<size_type Count>
constexpr Span< element_type, Count >	first () const

constexpr Span< element_type, dynamic_extent >	first (size_type Count) const

template<size_type Count>
constexpr Span< element_type, Count >	last () const

constexpr Span< element_type, dynamic_extent >	last (size_type Count) const

constexpr Span< element_type, dynamic_extent >	subspan (size_type Offset, size_type Count=dynamic_extent) const


	~Span ()=default

	Span (const Span &other) noexcept=default

Span &	operator= (const Span &other) noexcept=default

	Span (Span &&other) noexcept=default

Span &	operator= (Span &&other) noexcept=default


template<size_type Offset, size_type Count = dynamic_extent, typename std::enable_if< Count==dynamic_extent, int >::type = 0>
constexpr SubspanReturnType< Offset, Count >	subspan () const

template<size_type Offset, size_type Count, typename std::enable_if< Count !=dynamic_extent, int >::type = 0>
constexpr SubspanReturnType< Offset, Count >	subspan () const

Static Public Attributes
static constexpr size_type	extent = Extent

Detailed Description

template<typename T, std::size_t Extent = dynamic_extent>
class zserio::Span< T, Extent >

Class that holds non-owning reference (aka. "view") to continuous sequence of objects. The user of this class is responsible of making sure, that the referenced sequence is valid as long as the instance of the Span is alive. Inspired by C++20 std::span.

Definition at line 58 of file Span.h.

Member Typedef Documentation

◆ const_iterator

template<typename T , std::size_t Extent = dynamic_extent>

using zserio::Span< T, Extent >::const_iterator = const_pointer

Definition at line 69 of file Span.h.

◆ const_pointer

template<typename T , std::size_t Extent = dynamic_extent>

using zserio::Span< T, Extent >::const_pointer = const T*

Definition at line 66 of file Span.h.

◆ const_reverse_iterator

template<typename T , std::size_t Extent = dynamic_extent>

using zserio::Span< T, Extent >::const_reverse_iterator = std::reverse_iterator<const_iterator>

Definition at line 71 of file Span.h.

◆ difference_type

template<typename T , std::size_t Extent = dynamic_extent>

using zserio::Span< T, Extent >::difference_type = std::ptrdiff_t

Definition at line 64 of file Span.h.

◆ element_type

template<typename T , std::size_t Extent = dynamic_extent>

using zserio::Span< T, Extent >::element_type = T

Definition at line 61 of file Span.h.

◆ iterator

template<typename T , std::size_t Extent = dynamic_extent>

using zserio::Span< T, Extent >::iterator = pointer

Definition at line 68 of file Span.h.

◆ pointer

template<typename T , std::size_t Extent = dynamic_extent>

using zserio::Span< T, Extent >::pointer = T*

Definition at line 65 of file Span.h.

◆ reference

template<typename T , std::size_t Extent = dynamic_extent>

using zserio::Span< T, Extent >::reference = T&

Definition at line 67 of file Span.h.

◆ reverse_iterator

template<typename T , std::size_t Extent = dynamic_extent>

using zserio::Span< T, Extent >::reverse_iterator = std::reverse_iterator<iterator>

Definition at line 70 of file Span.h.

◆ size_type

template<typename T , std::size_t Extent = dynamic_extent>

using zserio::Span< T, Extent >::size_type = std::size_t

Definition at line 63 of file Span.h.

◆ SubspanReturnType

template<typename T , std::size_t Extent = dynamic_extent>

template<size_type Offset, size_type Count>

using zserio::Span< T, Extent >::SubspanReturnType = Span<T, Count != dynamic_extent ? Count : (Extent != dynamic_extent ? Extent - Offset : dynamic_extent)>

Definition at line 353 of file Span.h.

◆ value_type

template<typename T , std::size_t Extent = dynamic_extent>

using zserio::Span< T, Extent >::value_type = typename std::remove_cv<T>::type

Definition at line 62 of file Span.h.

Constructor & Destructor Documentation

◆ Span() [1/11]

template<typename T , std::size_t Extent = dynamic_extent>

template<size_type ext = Extent, typename std::enable_if<(ext==0||ext==dynamic_extent), int >::type = 0>

constexpr zserio::Span< T, Extent >::Span ( )

inlineconstexprnoexcept

Constructor. Initializes empty Span.

Definition at line 80 of file Span.h.

◆ Span() [2/11]

template<typename T , std::size_t Extent = dynamic_extent>

constexpr zserio::Span< T, Extent >::Span	(	pointer	first_,
		size_type	count
	)

inlineconstexpr

Constructor. Initializes Span holding a reference starting at given pointer, having given number of elements.

Parameters

first_	Pointer to first element in the sequence.
count	Number of elements.

Definition at line 90 of file Span.h.

◆ Span() [3/11]

template<typename T , std::size_t Extent = dynamic_extent>

constexpr zserio::Span< T, Extent >::Span	(	pointer	first_,
		pointer	last_
	)

inlineconstexpr

Constructor. Initializes Span holding a reference starting at given pointer, ending at another pointer.

Parameters

first_	Pointer to first element in the sequence.
last_	Pointer to one-after-last element in the sequence.

Definition at line 101 of file Span.h.

◆ Span() [4/11]

template<typename T , std::size_t Extent = dynamic_extent>

template<size_type N, size_type ext = Extent, typename std::enable_if<(ext==dynamic_extent||ext==N), int >::type = 0>

constexpr zserio::Span< T, Extent >::Span ( element_type(&) arr[N] )

inlineconstexprnoexcept

Constructor. Initializes Span holding a reference to array.

Parameters

arr	Array to which the Span will hold a reference.

Definition at line 112 of file Span.h.

◆ Span() [5/11]

template<typename T , std::size_t Extent = dynamic_extent>

template<typename U , size_type N, size_type ext = Extent, typename std::enable_if<(ext==dynamic_extent||ext==N) &&std::is_convertible< U(*)[], T(*)[]>::value, int >::type = 0>

constexpr zserio::Span< T, Extent >::Span ( std::array< U, N > & arr )

inlineconstexprnoexcept

Constructor. Initializes Span holding a reference to std::array.

Parameters

arr	std::array to which the Span will hold a reference.

Definition at line 125 of file Span.h.

◆ Span() [6/11]

template<typename T , std::size_t Extent = dynamic_extent>

template<typename U , size_type N, size_type ext = Extent, typename std::enable_if<(ext==dynamic_extent||ext==N) &&std::is_convertible< const U(*)[], T(*)[]>::value, int >::type = 0>

constexpr zserio::Span< T, Extent >::Span ( const std::array< U, N > & arr )

inlineconstexprnoexcept

Constructor. Initializes Span holding a reference to std::array.

Parameters

arr	std::array to which the Span will hold a reference.

Definition at line 138 of file Span.h.

◆ Span() [7/11]

template<typename T , std::size_t Extent = dynamic_extent>

template<typename U , typename ALLOC , size_type ext = Extent, typename std::enable_if<(ext==dynamic_extent) &&std::is_convertible< U(*)[], T(*)[]>::value, int >::type = 0>

constexpr zserio::Span< T, Extent >::Span ( std::vector< U, ALLOC > & vec )

inlineconstexpr

Constructor. Initializes Span holding a reference to std::vector.

Parameters

vec	std::vector to which the Span will hold a reference.

Definition at line 150 of file Span.h.

◆ Span() [8/11]

template<typename T , std::size_t Extent = dynamic_extent>

template<typename U , typename ALLOC , size_type ext = Extent, typename std::enable_if<(ext==dynamic_extent) &&std::is_convertible< const U(*)[], T(*)[]>::value, int >::type = 0>

constexpr zserio::Span< T, Extent >::Span ( const std::vector< U, ALLOC > & vec )

inlineconstexpr

Constructor. Initializes Span holding a reference to std::vector.

Parameters

vec	std::vector to which the Span will hold a reference.

Definition at line 163 of file Span.h.

◆ Span() [9/11]

template<typename T , std::size_t Extent = dynamic_extent>

template<typename U , size_type N, typename std::enable_if<(Extent==N||Extent==dynamic_extent) &&std::is_convertible< U(*)[], T(*)[]>::value, int >::type = 0>

constexpr zserio::Span< T, Extent >::Span ( const Span< U, N > & span )

inlineconstexprnoexcept

Constructor. Convert between spans of different types.

Parameters

span	Input span.

Definition at line 176 of file Span.h.

◆ ~Span()

template<typename T , std::size_t Extent = dynamic_extent>

zserio::Span< T, Extent >::~Span ( )

default

Method generated by default.

◆ Span() [10/11]

template<typename T , std::size_t Extent = dynamic_extent>

zserio::Span< T, Extent >::Span ( const Span< T, Extent > & other )

defaultnoexcept

Method generated by default.

◆ Span() [11/11]

template<typename T , std::size_t Extent = dynamic_extent>

zserio::Span< T, Extent >::Span ( Span< T, Extent > && other )

defaultnoexcept

Method generated by default.

Member Function Documentation

◆ back()

template<typename T , std::size_t Extent = dynamic_extent>

constexpr reference zserio::Span< T, Extent >::back ( ) const

inlineconstexpr

Get reference to the last element of the sequence. The sequence shall not be empty.

Returns: Reference to the last element of the sequence

Definition at line 250 of file Span.h.

◆ begin()

template<typename T , std::size_t Extent = dynamic_extent>

constexpr iterator zserio::Span< T, Extent >::begin ( ) const

inlineconstexprnoexcept

Begin iteration.

Returns: Iterator to the beginning of the sequence.

Definition at line 200 of file Span.h.

◆ data()

template<typename T , std::size_t Extent = dynamic_extent>

constexpr pointer zserio::Span< T, Extent >::data ( ) const

inlineconstexprnoexcept

Get pointer to the sequence beginning.

Returns: Pointer to the sequence beginning

Definition at line 271 of file Span.h.

◆ empty()

template<typename T , std::size_t Extent = dynamic_extent>

constexpr bool zserio::Span< T, Extent >::empty ( ) const

inlineconstexprnoexcept

Check if the sequence is empty.

Returns: True if the sequence is empty, false otherwise.

Definition at line 301 of file Span.h.

◆ end()

template<typename T , std::size_t Extent = dynamic_extent>

constexpr iterator zserio::Span< T, Extent >::end ( ) const

inlineconstexprnoexcept

End iteration.

Returns: Iterator one-past-last element of the sequence.

Definition at line 210 of file Span.h.

◆ first() [1/2]

template<typename T , std::size_t Extent = dynamic_extent>

template<size_type Count>

constexpr Span<element_type, Count> zserio::Span< T, Extent >::first ( ) const

inlineconstexpr

Get subspan of given number of elements from the sequence start.

Returns: Subspan of given number of elements from the sequence start.

Definition at line 312 of file Span.h.

◆ first() [2/2]

template<typename T , std::size_t Extent = dynamic_extent>

constexpr Span<element_type, dynamic_extent> zserio::Span< T, Extent >::first ( size_type Count ) const

inlineconstexpr

Get subspan of given number of elements from the sequence start.

Parameters

Count Requested number of elements in the subspan. Shall not be bigger than size().

Returns: Subspan of given number of elements from the sequence start.

Definition at line 324 of file Span.h.

◆ front()

template<typename T , std::size_t Extent = dynamic_extent>

constexpr reference zserio::Span< T, Extent >::front ( ) const

inlineconstexpr

Get reference to the first element of the sequence. The sequence shall not be empty.

Returns: Reference to the first element of the sequence

Definition at line 240 of file Span.h.

◆ last() [1/2]

template<typename T , std::size_t Extent = dynamic_extent>

template<size_type Count>

constexpr Span<element_type, Count> zserio::Span< T, Extent >::last ( ) const

inlineconstexpr

Get subspan of given number of elements from the sequence end.

Returns: Subspan of given number of elements from the sequence end.

Definition at line 335 of file Span.h.

◆ last() [2/2]

template<typename T , std::size_t Extent = dynamic_extent>

constexpr Span<element_type, dynamic_extent> zserio::Span< T, Extent >::last ( size_type Count ) const

inlineconstexpr

Get subspan of given number of elements from the sequence end.

Parameters

Count Requested number of elements in the subspan. Shall not be bigger than size().

Returns: Subspan of given number of elements from the sequence end.

Definition at line 347 of file Span.h.

◆ operator=() [1/2]

template<typename T , std::size_t Extent = dynamic_extent>

Span& zserio::Span< T, Extent >::operator= ( const Span< T, Extent > & other )

defaultnoexcept

Method generated by default.

◆ operator=() [2/2]

template<typename T , std::size_t Extent = dynamic_extent>

Span& zserio::Span< T, Extent >::operator= ( Span< T, Extent > && other )

defaultnoexcept

Method generated by default.

◆ operator[]()

template<typename T , std::size_t Extent = dynamic_extent>

constexpr reference zserio::Span< T, Extent >::operator[] ( size_type idx ) const

inlineconstexpr

Access the element on given index.

Parameters

idx	Index of element to be accessed. Must be less than size().

Returns: Element on given index.

Definition at line 261 of file Span.h.

◆ rbegin()

template<typename T , std::size_t Extent = dynamic_extent>

constexpr reverse_iterator zserio::Span< T, Extent >::rbegin ( ) const

inlineconstexprnoexcept

Begin reverse iteration.

Returns: Reverse iterator to the last element.

Definition at line 220 of file Span.h.

◆ rend()

template<typename T , std::size_t Extent = dynamic_extent>

constexpr reverse_iterator zserio::Span< T, Extent >::rend ( ) const

inlineconstexprnoexcept

End reverse iteration.

Returns: Reverse iterator one-before-first element of the sequence.

Definition at line 230 of file Span.h.

◆ size()

template<typename T , std::size_t Extent = dynamic_extent>

constexpr size_type zserio::Span< T, Extent >::size ( ) const

inlineconstexprnoexcept

Get number of elements in the sequence.

Returns: Number of elements in the sequence.

Definition at line 281 of file Span.h.

◆ size_bytes()

template<typename T , std::size_t Extent = dynamic_extent>

constexpr size_type zserio::Span< T, Extent >::size_bytes ( ) const

inlineconstexprnoexcept

Get size of sequence in bytes.

Returns: Size of sequence in bytes.

Definition at line 291 of file Span.h.

◆ subspan() [1/3]

template<typename T , std::size_t Extent = dynamic_extent>

template<size_type Offset, size_type Count = dynamic_extent, typename std::enable_if< Count==dynamic_extent, int >::type = 0>

constexpr SubspanReturnType<Offset, Count> zserio::Span< T, Extent >::subspan ( ) const

inlineconstexpr

Get subspan of given number of elements beginning at given index.

Returns: Subspan of given number of elements beginning at given index.

Definition at line 364 of file Span.h.

◆ subspan() [2/3]

template<typename T , std::size_t Extent = dynamic_extent>

template<size_type Offset, size_type Count, typename std::enable_if< Count !=dynamic_extent, int >::type = 0>

constexpr SubspanReturnType<Offset, Count> zserio::Span< T, Extent >::subspan ( ) const

inlineconstexpr

Get subspan of given number of elements beginning at given index.

Returns: Subspan of given number of elements beginning at given index.

Definition at line 373 of file Span.h.

◆ subspan() [3/3]

template<typename T , std::size_t Extent = dynamic_extent>

constexpr Span<element_type, dynamic_extent> zserio::Span< T, Extent >::subspan	(	size_type	Offset,
		size_type	Count = `dynamic_extent`
	)		const

inlineconstexpr

Get subspan of given number of elements beginning at given index.

Parameters

Offset	Index in the original sequence, where the new subspan should start
Count	Requested number of elements in the subspan.

Returns: Subspan of given number of elements beginning at given index.

Definition at line 388 of file Span.h.

Member Data Documentation

◆ extent

template<typename T , std::size_t Extent = dynamic_extent>

constexpr size_type zserio::Span< T, Extent >::extent = Extent

staticconstexpr

Definition at line 73 of file Span.h.

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

zserio/Span.h

Public Types

Public Member Functions

Static Public Attributes

Detailed Description

template<typename T, std::size_t Extent = dynamic_extent> class zserio::Span< T, Extent >

Member Typedef Documentation

◆ const_iterator

◆ const_pointer

◆ const_reverse_iterator

◆ difference_type

◆ element_type

◆ iterator

◆ pointer

◆ reference

◆ reverse_iterator

◆ size_type

◆ SubspanReturnType

◆ value_type

Constructor & Destructor Documentation

◆ Span() [1/11]

◆ Span() [2/11]

◆ Span() [3/11]

◆ Span() [4/11]

◆ Span() [5/11]

◆ Span() [6/11]

◆ Span() [7/11]

◆ Span() [8/11]

◆ Span() [9/11]

◆ ~Span()

◆ Span() [10/11]

◆ Span() [11/11]

Member Function Documentation

◆ back()

◆ begin()

◆ data()

◆ empty()

◆ end()

◆ first() [1/2]

◆ first() [2/2]

◆ front()

◆ last() [1/2]

◆ last() [2/2]

◆ operator=() [1/2]

◆ operator=() [2/2]

◆ operator[]()

◆ rbegin()

◆ rend()

◆ size()

◆ size_bytes()

◆ subspan() [1/3]

◆ subspan() [2/3]

◆ subspan() [3/3]

Member Data Documentation

◆ extent

template<typename T, std::size_t Extent = dynamic_extent>
class zserio::Span< T, Extent >