A view over a contiguous sequence of objects. More...

#include <span.h>

Public Types
using	element_type = T
	Type alias for the type of elements in this Span. More...

using	value_type = typename std::remove_cv< element_type >::type
	Type alias for the type of values in this Span. More...

using	size_type = std::size_t
	Type alias for the type of parameters that indicate a size or a number of values. More...

using	difference_type = std::ptrdiff_t
	Type alias for the type of parameters that indicate a difference of indexes into the Span. More...

using	pointer = element_type *
	Type alias type for a pointer to an element. More...

using	const_pointer = const element_type *
	Type alias type for a pointer to an const element. More...

using	reference = element_type &
	Type alias type for a reference to an element. More...

using	const_reference = const element_type &
	Type alias type for a reference to an const element. More...

using	iterator = pointer
	The type of an iterator to elements. More...

using	const_iterator = const_pointer
	The type of a const_iterator to elements. More...

using	reverse_iterator = std::reverse_iterator< iterator >
	The type of a reverse_iterator to elements. More...

using	const_reverse_iterator = std::reverse_iterator< const_iterator >
	The type of a const_reverse_iterator to elements. More...

Public Member Functions
template<std::size_t E = Extent, typename std::enable_if<(E==dynamic_extent\|\|E==0), bool >::type = true>
constexpr	Span () noexcept
	Default constructor. More...

constexpr	Span (pointer ptr, size_type count)
	Construct a new Span from the given pointer and size. More...

constexpr	Span (pointer first_elem, pointer last_elem)
	Construct a new Span from the open range between [first_elem, last_elem) More...

template<std::size_t N, std::size_t E = Extent, typename std::enable_if<(E==dynamic_extent\|\|N==extent) &&details::is_container_element_type_convertible< element_type(&)[N], T >::value, bool >::type = true>
constexpr	Span (element_type(&arr)[N]) noexcept
	Construct a new Span from the given raw array. More...

template<typename U , std::size_t N, std::size_t E = Extent, typename std::enable_if<(E==dynamic_extent\|\|N==extent) &&details::is_container_element_type_convertible< std::array< U, N > &, T >::value, bool >::type = true>
constexpr	Span (std::array< U, N > &arr) noexcept
	Construct a new Span from the given std::array. More...

template<typename U , std::size_t N, std::size_t E = Extent, typename std::enable_if<(E==dynamic_extent\|\|N==extent) &&details::is_container_element_type_convertible< const std::array< U, N > &, T >::value, bool >::type = true>
constexpr	Span (const std::array< U, N > &arr) noexcept
	Construct a new Span from the given const std::array. More...

template<typename Container , std::size_t E = Extent, typename std::enable_if<(E==dynamic_extent) &&details::is_container_type< Container >::value &&details::is_container_element_type_convertible< Container &, T >::value, bool >::type = true>
constexpr	Span (Container &cont) noexcept
	Construct a new Span from the given container. More...

template<typename Container , std::size_t E = Extent, typename std::enable_if<(E==dynamic_extent) &&details::is_container_type< Container >::value &&details::is_container_element_type_convertible< Container &, T >::value, bool >::type = true>
constexpr	Span (const Container &cont) noexcept
	Construct a new Span from the given const container. More...

constexpr	Span (const Span &) noexcept=default
	Copy construct a new Span from another instance. More...

template<typename U , std::size_t N, typename std::enable_if<(Extent==dynamic_extent\|\|N==dynamic_extent\|\|Extent==N) &&details::is_container_element_type_convertible< U()[], T()[]>::value >::type = true>
constexpr	Span (const Span< U, N > &other_span) noexcept
	Converting constructor. More...

	~Span () noexcept=default
	Destructor. More...

constexpr Span &	operator= (const Span &other) noexcept=default
	Copy assignment operator. More...

template<std::size_t Count>
constexpr Span< element_type, Count >	first () const
	Return a subspan containing only the first elements of this Span. More...

constexpr Span< element_type, dynamic_extent >	first (size_type count) const
	Return a subspan containing only the first elements of this Span. More...

template<std::size_t Count>
constexpr Span< element_type, Count >	last () const
	Return a subspan containing only the last elements of this Span. More...

constexpr Span< element_type, dynamic_extent >	last (size_type count) const
	Return a subspan containing only the last elements of this Span. More...

template<std::size_t Offset, std::size_t Count = dynamic_extent>
constexpr auto	subspan () const noexcept -> Span< element_type, Count !=dynamic_extent ? Count :(Extent !=dynamic_extent ? Extent - Offset :dynamic_extent)>
	Return a subspan of this Span. More...

constexpr Span< element_type, dynamic_extent >	subspan (size_type offset, size_type count=dynamic_extent) const
	Return a subspan of this Span. More...

constexpr size_type	size () const noexcept
	Return the size of this Span. More...

constexpr size_type	size_bytes () const noexcept
	Return the size of this Span in bytes. More...

constexpr bool	empty () const noexcept
	Return whether this Span is empty. More...

constexpr reference	operator[] (size_type idx) const
	Return a reference to the n-th element of this Span. More...

constexpr reference	front () const
	Return a reference to the first element of this Span. More...

constexpr reference	back () const
	Return a reference to the last element of this Span. More...

constexpr pointer	data () const noexcept
	Return a pointer to the start of the memory block covered by this Span. More...

constexpr iterator	begin () const noexcept
	Return an iterator pointing to the first element of this Span. More...

constexpr iterator	end () const noexcept
	Return an iterator pointing past the last element of this Span. More...

constexpr const_iterator	cbegin () const noexcept
	Return a const_iterator pointing to the first element of this Span. More...

constexpr const_iterator	cend () const noexcept
	Return a const_iterator pointing past the last element of this Span. More...

constexpr reverse_iterator	rbegin () const noexcept
	Return a reverse_iterator pointing to the last element of this Span. More...

constexpr reverse_iterator	rend () const noexcept
	Return a reverse_iterator pointing past the first element of this Span. More...

constexpr const_reverse_iterator	crbegin () const noexcept
	Return a const_reverse_iterator pointing to the last element of this Span. More...

constexpr const_reverse_iterator	crend () const noexcept
	Return a const_reverse_iterator pointing past the first element of this Span. More...

Static Public Attributes
static constexpr size_type	extent = Extent
	A constant reflecting the configured Extent of this Span. More...

Private Attributes
details::span_storage< T, Extent >	storage_
	The storage of span related data. More...

Detailed Description

template<typename T, std::size_t Extent>
class core_type::Span< T, Extent >

A view over a contiguous sequence of objects.

The type T is required to be a complete object type that is not an abstract class type. This class is implemented based on API specification of ara::core::Span from Adaptive Platform Core AUTOSAR AP R21-11

Template Parameters

T	The type of elements in the Span
Extent	The extent to use for this Span

Definition at line 191 of file span.h.

Member Typedef Documentation

◆ const_iterator

template<typename T , std::size_t Extent>

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

The type of a const_iterator to elements.

This iterator shall implement the concepts RandomAccessIterator, ContiguousIterator, and ConstexprIterator

Definition at line 246 of file span.h.

◆ const_pointer

template<typename T , std::size_t Extent>

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

Type alias type for a pointer to an const element.

Definition at line 224 of file span.h.

◆ const_reference

template<typename T , std::size_t Extent>

using core_type::Span< T, Extent >::const_reference = const element_type &

Type alias type for a reference to an const element.

Definition at line 234 of file span.h.

◆ const_reverse_iterator

template<typename T , std::size_t Extent>

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

The type of a const_reverse_iterator to elements.

Definition at line 256 of file span.h.

◆ difference_type

template<typename T , std::size_t Extent>

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

Type alias for the type of parameters that indicate a difference of indexes into the Span.

Definition at line 214 of file span.h.

◆ element_type

template<typename T , std::size_t Extent>

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

Type alias for the type of elements in this Span.

Definition at line 199 of file span.h.

◆ iterator

template<typename T , std::size_t Extent>

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

The type of an iterator to elements.

This iterator shall implement the concepts RandomAccessIterator, ContiguousIterator, and ConstexprIterator

Definition at line 240 of file span.h.

◆ pointer

template<typename T , std::size_t Extent>

using core_type::Span< T, Extent >::pointer = element_type *

Type alias type for a pointer to an element.

Definition at line 219 of file span.h.

◆ reference

template<typename T , std::size_t Extent>

using core_type::Span< T, Extent >::reference = element_type &

Type alias type for a reference to an element.

Definition at line 229 of file span.h.

◆ reverse_iterator

template<typename T , std::size_t Extent>

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

The type of a reverse_iterator to elements.

Definition at line 251 of file span.h.

◆ size_type

template<typename T , std::size_t Extent>

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

Type alias for the type of parameters that indicate a size or a number of values.

Definition at line 209 of file span.h.

◆ value_type

template<typename T , std::size_t Extent>

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

Type alias for the type of values in this Span.

Definition at line 204 of file span.h.

Constructor & Destructor Documentation

◆ Span() [1/10]

template<typename T , std::size_t Extent>

template<std::size_t E = Extent, typename std::enable_if<(E==dynamic_extent||E==0), bool >::type = true>

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

inlineconstexprnoexcept

Default constructor.

This constructor shall not participate in overload resolution unless (Extent == dynamic_extent || Extent == 0) is true

Definition at line 269 of file span.h.

269 {}

◆ Span() [2/10]

template<typename T , std::size_t Extent>

constexpr core_type::Span< T, Extent >::Span	(	pointer	ptr,
		size_type	count
	)

inlineconstexpr

Construct a new Span from the given pointer and size.

[ptr, ptr + count) shall be a valid range. If extent is not equal to dynamic_extent, then count shall be equal to Extent

Parameters

[in]	ptr	The pointer
[in]	count	The number of elements to take from ptr

Definition at line 280 of file span.h.

                                                : storage_{ptr, count} {
     details::CheckIfExpectedOrAbort(Extent == dynamic_extent || count == Extent, "Invalid range",
                                     __FILE__, __LINE__);
   }

References core_type::details::CheckIfExpectedOrAbort(), and core_type::dynamic_extent.

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◆ Span() [3/10]

template<typename T , std::size_t Extent>

constexpr core_type::Span< T, Extent >::Span	(	pointer	first_elem,
		pointer	last_elem
	)

inlineconstexpr

Construct a new Span from the open range between [first_elem, last_elem)

[first_elem, last_elem) shall be a valid range. If extent is not equal to dynamic_extent, then (last_elem - first_elem) shall be equal to extent

Parameters

[in]	first_elem	The pointer to the first element
[in]	last_elem	The pointer to past the last element

Definition at line 294 of file span.h.

       : storage_{first_elem, last_elem - first_elem} {
     details::CheckIfExpectedOrAbort(Extent == dynamic_extent || (last_elem - first_elem) == Extent,
                                     "Invalid range", __FILE__, __LINE__);
   }

References core_type::details::CheckIfExpectedOrAbort(), and core_type::dynamic_extent.

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◆ Span() [4/10]

template<typename T , std::size_t Extent>

template<std::size_t N, std::size_t E = Extent, typename std::enable_if<(E==dynamic_extent||N==extent) &&details::is_container_element_type_convertible< element_type(&)[N], T >::value, bool >::type = true>

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

inlineexplicitconstexprnoexcept

Construct a new Span from the given raw array.

This constructor shall not participate in overload resolution unless: extent == dynamic_extent || N == extent is true, and std::remove_pointer_t<decltype(std::data(arr))>(*)[] is convertible to T(*)[]

Template Parameters

N	The size of the raw array

Parameters

[in] arr The raw array

Definition at line 314 of file span.h.

314 : storage_{arr, N} {}

◆ Span() [5/10]

template<typename T , std::size_t Extent>

template<typename U , std::size_t N, std::size_t E = Extent, typename std::enable_if<(E==dynamic_extent||N==extent) &&details::is_container_element_type_convertible< std::array< U, N > &, T >::value, bool >::type = true>

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

inlineexplicitconstexprnoexcept

Construct a new Span from the given std::array.

This constructor shall not participate in overload resolution unless: extent == dynamic_extent || N == extent is true, and std::remove_pointer_t<decltype(std::data(arr))>(*)[] is convertible to T(*)[]

Template Parameters

U	The type of elements within the std::array
N	The size of the raw array

Parameters

[in] arr The std::array

Definition at line 332 of file span.h.

332 : storage_{arr.data(), N} {}

◆ Span() [6/10]

template<typename T , std::size_t Extent>

template<typename U , std::size_t N, std::size_t E = Extent, typename std::enable_if<(E==dynamic_extent||N==extent) &&details::is_container_element_type_convertible< const std::array< U, N > &, T >::value, bool >::type = true>

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

inlineexplicitconstexprnoexcept

Construct a new Span from the given const std::array.

This constructor shall not participate in overload resolution unless: extent == dynamic_extent || N == extent is true, and std::remove_pointer_t<decltype(std::data(arr))>(*)[] is convertible to T(*)[]

Template Parameters

U	The type of elements within the std::array
N	The size of the raw array

Parameters

[in] arr The std::array

Definition at line 350 of file span.h.

350 : storage_{arr.data(), N} {}

◆ Span() [7/10]

template<typename T , std::size_t Extent>

template<typename Container , std::size_t E = Extent, typename std::enable_if<(E==dynamic_extent) &&details::is_container_type< Container >::value &&details::is_container_element_type_convertible< Container &, T >::value, bool >::type = true>

constexpr core_type::Span< T, Extent >::Span ( Container & cont )

inlineexplicitconstexprnoexcept

Construct a new Span from the given container.

[std::data(cont), std::data(cont) + std::size(cont)) shall be a valid range. This constructor shall not participate in overload resolution unless: extent == dynamic_extent is true, Container is not a specialization of Span, Container is not a specialization of Array, Container is not a specialization of std::array, std::is_array<Container>::value is false, std::data(cont) and std::size(cont) are both well-formed, and std::remove_pointer_t<decltype(ara::core::data(cont))>(*)[] is convertible to T(*)[].

Template Parameters

Container The type of container

Parameters

[in] cont The container

Definition at line 369 of file span.h.

369 : storage_{std::data(cont), std::size(cont)} {}

◆ Span() [8/10]

template<typename T , std::size_t Extent>

template<typename Container , std::size_t E = Extent, typename std::enable_if<(E==dynamic_extent) &&details::is_container_type< Container >::value &&details::is_container_element_type_convertible< Container &, T >::value, bool >::type = true>

constexpr core_type::Span< T, Extent >::Span ( const Container & cont )

inlineexplicitconstexprnoexcept

Construct a new Span from the given const container.

[std::data(cont), std::data(cont) + std::size(cont)) shall be a valid range. This constructor shall not participate in overload resolution unless: extent == dynamic_extent is true, Container is not a specialization of Span, Container is not a specialization of Array, Container is not a specialization of std::array, std::is_array<Container>::value is false, std::data(cont) and std::size(cont) are both well-formed, and std::remove_pointer_t<decltype(ara::core::data(cont))>(*)[] is convertible to T(*)[].

Template Parameters

Container The type of container

Parameters

[in] cont The container

Definition at line 388 of file span.h.

389 : storage_{std::data(cont), std::size(cont)} {}

◆ Span() [9/10]

template<typename T , std::size_t Extent>

constexpr core_type::Span< T, Extent >::Span ( const Span< T, Extent > & )

constexprdefaultnoexcept

Copy construct a new Span from another instance.

◆ Span() [10/10]

template<typename T , std::size_t Extent>

template<typename U , std::size_t N, typename std::enable_if<(Extent==dynamic_extent||N==dynamic_extent||Extent==N) &&details::is_container_element_type_convertible< U(*)[], T(*)[]>::value >::type = true>

constexpr core_type::Span< T, Extent >::Span ( const Span< U, N > & other_span )

inlineexplicitconstexprnoexcept

Converting constructor.

This ctor allows construction of a cv-qualified Span from a normal Span, and also of a dynamic_extent-Span<> from a static extent-one. This constructor shall not participate in overload resolution unless: Extent == dynamic_extent || Extent == N is true, U(*)[] is convertible to T(*)[].

Template Parameters

U	The type of elements within the other Span
N	The Extent of the other Span

Parameters

[in] other_span The other Span instance

Definition at line 413 of file span.h.

414 : storage_{other_span.data(), other_span.size()} {}

◆ ~Span()

template<typename T , std::size_t Extent>

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

defaultnoexcept

Destructor.

Member Function Documentation

◆ back()

template<typename T , std::size_t Extent>

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

inlineconstexpr

Return a reference to the last element of this Span.

The behavior of this function is undefined if empty() is true

Returns: The reference

Definition at line 566 of file span.h.

                                    {
     details::CheckIfExpectedOrAbort(!empty(), "Span is empty", __FILE__, __LINE__);
     return *(data() + (size() - 1));
   }

References core_type::details::CheckIfExpectedOrAbort(), core_type::Span< T, Extent >::data(), core_type::Span< T, Extent >::empty(), and core_type::Span< T, Extent >::size().

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◆ begin()

template<typename T , std::size_t Extent>

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

inlineconstexprnoexcept

Return an iterator pointing to the first element of this Span.

Returns: The iterator

Definition at line 581 of file span.h.

581 { return data(); }

References core_type::Span< T, Extent >::data().

Referenced by core_type::Span< T, Extent >::cbegin(), core_type::Span< T, Extent >::crend(), and core_type::Span< T, Extent >::rend().

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◆ cbegin()

template<typename T , std::size_t Extent>

constexpr const_iterator core_type::Span< T, Extent >::cbegin ( ) const

inlineconstexprnoexcept

Return a const_iterator pointing to the first element of this Span.

Returns: The const_iterator

Definition at line 593 of file span.h.

593 { return const_iterator(begin()); }

core_type::Span::const_iterator

const_pointer const_iterator

The type of a const_iterator to elements.

Definition: span.h:246

core_type::Span::begin

constexpr iterator begin() const noexcept

Return an iterator pointing to the first element of this Span.

Definition: span.h:581

References core_type::Span< T, Extent >::begin().

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◆ cend()

template<typename T , std::size_t Extent>

constexpr const_iterator core_type::Span< T, Extent >::cend ( ) const

inlineconstexprnoexcept

Return a const_iterator pointing past the last element of this Span.

Returns: The const_iterator

Definition at line 599 of file span.h.

599 { return const_iterator(end()); }

core_type::Span::end

constexpr iterator end() const noexcept

Return an iterator pointing past the last element of this Span.

Definition: span.h:587

References core_type::Span< T, Extent >::end().

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◆ crbegin()

template<typename T , std::size_t Extent>

constexpr const_reverse_iterator core_type::Span< T, Extent >::crbegin ( ) const

inlineconstexprnoexcept

Return a const_reverse_iterator pointing to the last element of this Span.

Returns: The const_reverse_iterator

Definition at line 617 of file span.h.

                                                             {
     return const_reverse_iterator(end());
   }

References core_type::Span< T, Extent >::end().

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◆ crend()

template<typename T , std::size_t Extent>

constexpr const_reverse_iterator core_type::Span< T, Extent >::crend ( ) const

inlineconstexprnoexcept

Return a const_reverse_iterator pointing past the first element of this Span.

Returns: The const_reverse_iterator

Definition at line 625 of file span.h.

                                                           {
     return const_reverse_iterator(begin());
   }

References core_type::Span< T, Extent >::begin().

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◆ data()

template<typename T , std::size_t Extent>

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

inlineconstexprnoexcept

Return a pointer to the start of the memory block covered by this Span.

Returns: The pointer

Definition at line 575 of file span.h.

575 { return storage_.ptr_; }

References core_type::Span< T, Extent >::storage_.

Referenced by core_type::Span< T, Extent >::back(), core_type::Span< T, Extent >::begin(), core_type::Span< T, Extent >::end(), core_type::Span< T, Extent >::first(), core_type::Span< T, Extent >::front(), core_type::Span< T, Extent >::last(), core_type::Span< T, Extent >::operator[](), and core_type::Span< T, Extent >::subspan().

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◆ empty()

template<typename T , std::size_t Extent>

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

inlineconstexprnoexcept

Return whether this Span is empty.

Returns: True if this Span contains 0 elements, False otherwise

Definition at line 538 of file span.h.

538 { return size() == 0u; }

References core_type::Span< T, Extent >::size().

Referenced by core_type::Span< T, Extent >::back(), and core_type::Span< T, Extent >::front().

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◆ end()

template<typename T , std::size_t Extent>

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

inlineconstexprnoexcept

Return an iterator pointing past the last element of this Span.

Returns: The iterator

Definition at line 587 of file span.h.

587 { return data() + size(); }

References core_type::Span< T, Extent >::data(), and core_type::Span< T, Extent >::size().

Referenced by core_type::Span< T, Extent >::cend(), core_type::Span< T, Extent >::crbegin(), and core_type::Span< T, Extent >::rbegin().

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◆ first() [1/2]

template<typename T , std::size_t Extent>

template<std::size_t Count>

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

inlineconstexpr

Return a subspan containing only the first elements of this Span.

The implementation shall ensure that (Count <= Extent) is true. The behavior of this function is undefined if (Count > size()).

Template Parameters

Count The number of elements to take over

Returns: The subspan

Definition at line 435 of file span.h.

                                                     {
     details::CheckIfExpectedOrAbort(Count <= size(), "Count > size()", __FILE__, __LINE__);
     return Span{data(), Count};
   }

References core_type::details::CheckIfExpectedOrAbort(), core_type::Span< T, Extent >::data(), and core_type::Span< T, Extent >::size().

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◆ first() [2/2]

template<typename T , std::size_t Extent>

constexpr Span<element_type, dynamic_extent> core_type::Span< T, Extent >::first ( size_type count ) const

inlineconstexpr

Return a subspan containing only the first elements of this Span.

The behavior of this function is undefined if (count > size())

Parameters

[in] count The number of elements to take over

Returns: The subspan

Definition at line 447 of file span.h.

                                                                             {
     details::CheckIfExpectedOrAbort(count <= size(), "Count > size()", __FILE__, __LINE__);
     return Span{data(), count};
   }

References core_type::details::CheckIfExpectedOrAbort(), core_type::Span< T, Extent >::data(), and core_type::Span< T, Extent >::size().

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◆ front()

template<typename T , std::size_t Extent>

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

inlineconstexpr

Return a reference to the first element of this Span.

The behavior of this function is undefined if empty() is true

Returns: The reference

Definition at line 556 of file span.h.

                                     {
     details::CheckIfExpectedOrAbort(!empty(), "Span is empty", __FILE__, __LINE__);
     return *(data());
   }

References core_type::details::CheckIfExpectedOrAbort(), core_type::Span< T, Extent >::data(), and core_type::Span< T, Extent >::empty().

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◆ last() [1/2]

template<typename T , std::size_t Extent>

template<std::size_t Count>

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

inlineconstexpr

Return a subspan containing only the last elements of this Span.

The implementation shall ensure that (Count <= Extent) is true. The behavior of this function is undefined if (Count > size()).

Template Parameters

Count The number of elements to take over

Returns: The subspan

Definition at line 461 of file span.h.

                                                    {
     details::CheckIfExpectedOrAbort(Count <= size(), "Count > size()", __FILE__, __LINE__);
     return Span{data() + (size() - Count), Count};
   }

References core_type::details::CheckIfExpectedOrAbort(), core_type::Span< T, Extent >::data(), and core_type::Span< T, Extent >::size().

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◆ last() [2/2]

template<typename T , std::size_t Extent>

constexpr Span<element_type, dynamic_extent> core_type::Span< T, Extent >::last ( size_type count ) const

inlineconstexpr

Return a subspan containing only the last elements of this Span.

The behavior of this function is undefined if (count > size())

Parameters

[in] count The number of elements to take over

Returns: The subspan

Definition at line 473 of file span.h.

                                                                            {
     details::CheckIfExpectedOrAbort(count <= size(), "count > size()", __FILE__, __LINE__);
     return Span{data() + (size() - count), count};
   }

References core_type::details::CheckIfExpectedOrAbort(), core_type::Span< T, Extent >::data(), and core_type::Span< T, Extent >::size().

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◆ operator=()

template<typename T , std::size_t Extent>

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

constexprdefaultnoexcept

Copy assignment operator.

◆ operator[]()

template<typename T , std::size_t Extent>

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

inlineconstexpr

Return a reference to the n-th element of this Span.

Parameters

[in] idx The index into this Span

Returns: The reference

Definition at line 546 of file span.h.

                                                       {
     details::CheckIfExpectedOrAbort(idx < size(), "idx > size()", __FILE__, __LINE__);
     return *(data() + idx);
   }

References core_type::details::CheckIfExpectedOrAbort(), core_type::Span< T, Extent >::data(), and core_type::Span< T, Extent >::size().

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◆ rbegin()

template<typename T , std::size_t Extent>

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

inlineconstexprnoexcept

Return a reverse_iterator pointing to the last element of this Span.

Returns: The reverse_iterator

Definition at line 605 of file span.h.

605 { return reverse_iterator(end()); }

core_type::Span::reverse_iterator

std::reverse_iterator< iterator > reverse_iterator

The type of a reverse_iterator to elements.

Definition: span.h:251

References core_type::Span< T, Extent >::end().

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◆ rend()

template<typename T , std::size_t Extent>

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

inlineconstexprnoexcept

Return a reverse_iterator pointing past the first element of this Span.

Returns: The reverse_iterator

Definition at line 611 of file span.h.

611 { return reverse_iterator(begin()); }

References core_type::Span< T, Extent >::begin().

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◆ size()

template<typename T , std::size_t Extent>

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

inlineconstexprnoexcept

Return the size of this Span.

Returns: The number of elements contained in this Span

Definition at line 526 of file span.h.

526 { return storage_.size_; }

References core_type::Span< T, Extent >::storage_.

Referenced by core_type::Span< T, Extent >::back(), doip_client::DoipMessage::DoipMessage(), core_type::Span< T, Extent >::empty(), core_type::Span< T, Extent >::end(), core_type::Span< T, Extent >::first(), core_type::Span< T, Extent >::last(), core_type::Span< T, Extent >::operator[](), core_type::Span< T, Extent >::size_bytes(), and core_type::Span< T, Extent >::subspan().

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◆ size_bytes()

template<typename T , std::size_t Extent>

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

inlineconstexprnoexcept

Return the size of this Span in bytes.

Returns: The number of bytes covered by this Span

Definition at line 532 of file span.h.

532 { return size() * sizeof(element_type); }

core_type::Span::element_type

T element_type

Type alias for the type of elements in this Span.

Definition: span.h:199

References core_type::Span< T, Extent >::size().

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◆ subspan() [1/2]

template<typename T , std::size_t Extent>

template<std::size_t Offset, std::size_t Count = dynamic_extent>

constexpr auto core_type::Span< T, Extent >::subspan ( ) const -> Span<element_type, Count != dynamic_extent ? Count : (Extent != dynamic_extent ? Extent - Offset : dynamic_extent)>

inlineconstexprnoexcept

Return a subspan of this Span.

The second template argument of the returned Span type is: Count != dynamic_extent ? Count : (Extent != dynamic_extent ? Extent - Offset : dynamic_extent) The implementation shall ensure that (Offset <= Extent && (Count == dynamic_extent || Count <= Extent - Offset)) is true. The behavior of this function is undefined unless (Offset <= size() && (Count == dynamic_extent || Count <= size() - Offset)) is true.

Template Parameters

Offset	The offset into this Span from which to start
Count	The number of elements to take over

Returns: The subspan

Definition at line 491 of file span.h.

                                 : (Extent != dynamic_extent ? Extent - Offset : dynamic_extent)> {
     details::CheckIfExpectedOrAbort(
         (Offset <= size() && (Count == dynamic_extent || Count <= size() - Offset)),
         "(Offset <= size() && (Count == dynamic_extent || Count <= size() - "
         "Offset))",
         __FILE__, __LINE__);
     return Span{data() + Offset, Count != dynamic_extent ? Count : size() - Offset};
   }

References core_type::details::CheckIfExpectedOrAbort(), core_type::Span< T, Extent >::data(), core_type::dynamic_extent, and core_type::Span< T, Extent >::size().

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◆ subspan() [2/2]

template<typename T , std::size_t Extent>

constexpr Span<element_type, dynamic_extent> core_type::Span< T, Extent >::subspan	(	size_type	offset,
		size_type	count = `dynamic_extent`
	)		const

inlineconstexpr

Return a subspan of this Span.

The behavior of this function is undefined unless (offset <= size() && (count == dynamic_extent || count <= size() - offset)) is true

Parameters

[in]	offset	The offset into this Span from which to start
[in]	count	The number of elements to take over

Returns: The subspan

Definition at line 512 of file span.h.

                                                                                                {
     details::CheckIfExpectedOrAbort(
         (offset <= size() && (count == dynamic_extent || count <= size() - offset)),
         "(offset <= size() && (count == dynamic_extent || count <= size() - "
         "offset))",
         __FILE__, __LINE__);
     return {data() + offset, count == dynamic_extent ? size() - offset : count};
   }

References core_type::details::CheckIfExpectedOrAbort(), core_type::Span< T, Extent >::data(), core_type::dynamic_extent, and core_type::Span< T, Extent >::size().

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Member Data Documentation

◆ extent

template<typename T , std::size_t Extent>

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

staticconstexpr

A constant reflecting the configured Extent of this Span.

Definition at line 261 of file span.h.

◆ storage_

template<typename T , std::size_t Extent>

details::span_storage<T, Extent> core_type::Span< T, Extent >::storage_

private

The storage of span related data.

Definition at line 633 of file span.h.

Referenced by core_type::Span< T, Extent >::data(), and core_type::Span< T, Extent >::size().

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

/home/runner/work/diag-client-lib/diag-client-lib/diag-client-lib/lib/platform-core/core/include/span.h

Public Types

Public Member Functions

Static Public Attributes

Private Attributes

Detailed Description

template<typename T, std::size_t Extent> class core_type::Span< T, Extent >

Member Typedef Documentation

◆ const_iterator

◆ const_pointer

◆ const_reference

◆ const_reverse_iterator

◆ difference_type

◆ element_type

◆ iterator

◆ pointer

◆ reference

◆ reverse_iterator

◆ size_type

◆ value_type

Constructor & Destructor Documentation

◆ Span() [1/10]

◆ Span() [2/10]

◆ Span() [3/10]

◆ Span() [4/10]

◆ Span() [5/10]

◆ Span() [6/10]

◆ Span() [7/10]

◆ Span() [8/10]

◆ Span() [9/10]

◆ Span() [10/10]

◆ ~Span()

Member Function Documentation

◆ back()

◆ begin()

◆ cbegin()

◆ cend()

◆ crbegin()

◆ crend()

◆ data()

◆ empty()

◆ end()

◆ first() [1/2]

◆ first() [2/2]

◆ front()

◆ last() [1/2]

◆ last() [2/2]

◆ operator=()

◆ operator[]()

◆ rbegin()

◆ rend()

◆ size()

◆ size_bytes()

◆ subspan() [1/2]

◆ subspan() [2/2]

Member Data Documentation

◆ extent

◆ storage_

template<typename T, std::size_t Extent>
class core_type::Span< T, Extent >