include/boost/capy/buffers/buffer_array.hpp

97.4% Lines (454/466) 100.0% List of functions (75/75) 76.5% Branches (176/230)

[ ] prev/next file n p prev/next uncovered line

f(x) Functions (75)

Function Calls Lines Branches Blocks

Line	Branch	Hits	Source Code
1			//
2			// Copyright (c) 2025 Vinnie Falco (vinnie.falco@gmail.com)
3			//
4			// Distributed under the Boost Software License, Version 1.0. (See accompanying
5			// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
6			//
7			// Official repository: https://github.com/cppalliance/capy
8			//
9
10			#ifndef BOOST_CAPY_BUFFERS_BUFFER_ARRAY_HPP
11			#define BOOST_CAPY_BUFFERS_BUFFER_ARRAY_HPP
12
13			#include <boost/capy/detail/config.hpp>
14			#include <boost/capy/detail/except.hpp>
15			#include <boost/capy/buffers.hpp>
16
17			#include <cstddef>
18			#include <new>
19			#include <span>
20			#include <utility>
21
22			namespace boost {
23			namespace capy {
24
25			namespace detail {
26
27			BOOST_CAPY_DECL
28			void
29			buffer_array_remove_prefix(
30			const_buffer* arr,
31			std::size_t* count,
32			std::size_t* total_size,
33			std::size_t n) noexcept;
34
35			BOOST_CAPY_DECL
36			void
37			buffer_array_remove_prefix(
38			mutable_buffer* arr,
39			std::size_t* count,
40			std::size_t* total_size,
41			std::size_t n) noexcept;
42
43			BOOST_CAPY_DECL
44			void
45			buffer_array_keep_prefix(
46			const_buffer* arr,
47			std::size_t* count,
48			std::size_t* total_size,
49			std::size_t n) noexcept;
50
51			BOOST_CAPY_DECL
52			void
53			buffer_array_keep_prefix(
54			mutable_buffer* arr,
55			std::size_t* count,
56			std::size_t* total_size,
57			std::size_t n) noexcept;
58
59			} // namespace detail
60
61			/** A buffer sequence holding up to N buffers.
62
63			This class template stores a fixed-capacity array of buffer
64			descriptors, where the actual count can vary from 0 to N.
65			It provides efficient storage for small buffer sequences
66			without dynamic allocation.
67
68			@tparam N Maximum number of buffers the array can hold.
69			@tparam IsConst If true, holds const_buffer; otherwise mutable_buffer.
70
71			@par Usage
72
73			@code
74			void process(ConstBufferSequence auto const& buffers)
75			{
76			const_buffer_array<4> bufs(buffers);
77			// use bufs.begin(), bufs.end(), bufs.to_span()
78			}
79			@endcode
80			*/
81			template<std::size_t N, bool IsConst>
82			class buffer_array
83			{
84			public:
85			/** The type of buffer stored in the array.
86			*/
87			using value_type = std::conditional_t<IsConst, const_buffer, mutable_buffer>;
88
89			private:
90			std::size_t n_ = 0;
91			std::size_t size_ = 0;
92			union {
93			int dummy_;
94			value_type arr_[N];
95			};
96
97			public:
98			/** Default constructor.
99
100			Constructs an empty buffer array.
101			*/
102		6x	buffer_array() noexcept
103		6x	: dummy_(0)
104			{
105		6x	}
106
107			/** Copy constructor.
108			*/
109		4644x	buffer_array(buffer_array const& other) noexcept
110		4644x	: n_(other.n_)
111		4644x	, size_(other.size_)
112			{
113	8/8 boost::capy::buffer_array<16ul, false>::buffer_array(boost::capy::buffer_array<16ul, false> const&): ✓ Branch 0 taken 244 times. ✓ Branch 1 taken 141 times. boost::capy::buffer_array<16ul, true>::buffer_array(boost::capy::buffer_array<16ul, true> const&): ✓ Branch 0 taken 213 times. ✓ Branch 1 taken 117 times. boost::capy::buffer_array<4ul, false>::buffer_array(boost::capy::buffer_array<4ul, false> const&): ✓ Branch 0 taken 3511 times. ✓ Branch 1 taken 2193 times. boost::capy::buffer_array<4ul, true>::buffer_array(boost::capy::buffer_array<4ul, true> const&): ✓ Branch 0 taken 3511 times. ✓ Branch 1 taken 2193 times.	12123x	for(std::size_t i = 0; i < n_; ++i)
114		7479x	::new(&arr_[i]) value_type(other.arr_[i]);
115		4644x	}
116
117			/** Construct from a single buffer.
118
119			@param b The buffer to store.
120			*/
121		130x	buffer_array(value_type const& b) noexcept
122		130x	: dummy_(0)
123			{
124	7/8 boost::capy::buffer_array<16ul, false>::buffer_array(boost::capy::mutable_buffer const&): ✓ Branch 1 taken 64 times. ✓ Branch 2 taken 5 times. boost::capy::buffer_array<16ul, true>::buffer_array(boost::capy::const_buffer const&): ✓ Branch 1 taken 48 times. ✓ Branch 2 taken 2 times. boost::capy::buffer_array<4ul, false>::buffer_array(boost::capy::mutable_buffer const&): ✓ Branch 1 taken 5 times. ✗ Branch 2 not taken. boost::capy::buffer_array<4ul, true>::buffer_array(boost::capy::const_buffer const&): ✓ Branch 1 taken 5 times. ✓ Branch 2 taken 1 time.	130x	if(b.size() != 0)
125			{
126		122x	::new(&arr_[0]) value_type(b);
127		122x	n_ = 1;
128		122x	size_ = b.size();
129			}
130		130x	}
131
132			/** Construct from a buffer sequence.
133
134			Copies up to N buffer descriptors from the source
135			sequence into the internal array. If the sequence
136			contains more than N non-empty buffers, excess
137			buffers are silently ignored.
138
139			@param bs The buffer sequence to copy from.
140			*/
141			template<class BS>
142			requires (IsConst ? ConstBufferSequence<BS> : MutableBufferSequence<BS>)
143			&& (!std::same_as<std::remove_cvref_t<BS>, buffer_array>)
144			&& (!std::same_as<std::remove_cvref_t<BS>, value_type>)
145		185x	buffer_array(BS const& bs) noexcept
146		185x	: dummy_(0)
147			{
148		185x	auto it = capy::begin(bs);
149		185x	auto const last = capy::end(bs);
150	56/68 boost::capy::buffer_array<16ul, false>::buffer_array<std::array<boost::capy::mutable_buffer, 2ul> >(std::array<boost::capy::mutable_buffer, 2ul> const&): ✓ Branch 0 taken 24 times. ✓ Branch 1 taken 12 times. ✓ Branch 2 taken 24 times. ✗ Branch 3 not taken. boost::capy::buffer_array<16ul, false>::buffer_array<std::span<boost::capy::mutable_buffer const, 18446744073709551615ul> >(std::span<boost::capy::mutable_buffer const, 18446744073709551615ul> const&): ✓ Branch 1 taken 12 times. ✓ Branch 2 taken 6 times. ✓ Branch 3 taken 12 times. ✗ Branch 4 not taken. ✓ Branch 5 taken 12 times. ✓ Branch 6 taken 6 times. boost::capy::buffer_array<16ul, false>::buffer_array<std::span<boost::capy::mutable_buffer, 18446744073709551615ul> >(std::span<boost::capy::mutable_buffer, 18446744073709551615ul> const&): ✓ Branch 1 taken 52 times. ✓ Branch 2 taken 52 times. ✓ Branch 3 taken 52 times. ✗ Branch 4 not taken. ✓ Branch 5 taken 52 times. ✓ Branch 6 taken 52 times. boost::capy::buffer_array<16ul, false>::buffer_array<std::vector<boost::capy::mutable_buffer, std::allocator<boost::capy::mutable_buffer> > >(std::vector<boost::capy::mutable_buffer, std::allocator<boost::capy::mutable_buffer> > const&): ✓ Branch 1 taken 102 times. ✗ Branch 2 not taken. ✓ Branch 3 taken 96 times. ✓ Branch 4 taken 6 times. ✓ Branch 5 taken 96 times. ✓ Branch 6 taken 6 times. boost::capy::buffer_array<16ul, true>::buffer_array<std::array<boost::capy::const_buffer, 2ul> >(std::array<boost::capy::const_buffer, 2ul> const&): ✓ Branch 0 taken 12 times. ✓ Branch 1 taken 6 times. ✓ Branch 2 taken 12 times. ✗ Branch 3 not taken. boost::capy::buffer_array<16ul, true>::buffer_array<std::span<boost::capy::const_buffer const, 18446744073709551615ul> >(std::span<boost::capy::const_buffer const, 18446744073709551615ul> const&): ✓ Branch 1 taken 12 times. ✓ Branch 2 taken 8 times. ✓ Branch 3 taken 12 times. ✗ Branch 4 not taken. ✓ Branch 5 taken 12 times. ✓ Branch 6 taken 8 times. boost::capy::buffer_array<16ul, true>::buffer_array<std::span<boost::capy::const_buffer, 18446744073709551615ul> >(std::span<boost::capy::const_buffer, 18446744073709551615ul> const&): ✓ Branch 1 taken 51 times. ✓ Branch 2 taken 51 times. ✓ Branch 3 taken 51 times. ✗ Branch 4 not taken. ✓ Branch 5 taken 51 times. ✓ Branch 6 taken 51 times. boost::capy::buffer_array<16ul, true>::buffer_array<std::vector<boost::capy::const_buffer, std::allocator<boost::capy::const_buffer> > >(std::vector<boost::capy::const_buffer, std::allocator<boost::capy::const_buffer> > const&): ✓ Branch 1 taken 102 times. ✗ Branch 2 not taken. ✓ Branch 3 taken 96 times. ✓ Branch 4 taken 6 times. ✓ Branch 5 taken 96 times. ✓ Branch 6 taken 6 times. boost::capy::buffer_array<2ul, false>::buffer_array<std::vector<boost::capy::mutable_buffer, std::allocator<boost::capy::mutable_buffer> > >(std::vector<boost::capy::mutable_buffer, std::allocator<boost::capy::mutable_buffer> > const&): ✓ Branch 1 taken 6 times. ✗ Branch 2 not taken. ✓ Branch 3 taken 4 times. ✓ Branch 4 taken 2 times. ✓ Branch 5 taken 4 times. ✓ Branch 6 taken 2 times. boost::capy::buffer_array<2ul, true>::buffer_array<std::vector<boost::capy::const_buffer, std::allocator<boost::capy::const_buffer> > >(std::vector<boost::capy::const_buffer, std::allocator<boost::capy::const_buffer> > const&): ✓ Branch 1 taken 6 times. ✗ Branch 2 not taken. ✓ Branch 3 taken 4 times. ✓ Branch 4 taken 2 times. ✓ Branch 5 taken 4 times. ✓ Branch 6 taken 2 times. boost::capy::buffer_array<4ul, false>::buffer_array<std::vector<boost::capy::mutable_buffer, std::allocator<boost::capy::mutable_buffer> > >(std::vector<boost::capy::mutable_buffer, std::allocator<boost::capy::mutable_buffer> > const&): ✓ Branch 1 taken 35 times. ✓ Branch 2 taken 17 times. ✓ Branch 3 taken 35 times. ✗ Branch 4 not taken. ✓ Branch 5 taken 35 times. ✓ Branch 6 taken 17 times. boost::capy::buffer_array<4ul, true>::buffer_array<std::vector<boost::capy::const_buffer, std::allocator<boost::capy::const_buffer> > >(std::vector<boost::capy::const_buffer, std::allocator<boost::capy::const_buffer> > const&): ✓ Branch 1 taken 35 times. ✓ Branch 2 taken 17 times. ✓ Branch 3 taken 35 times. ✗ Branch 4 not taken. ✓ Branch 5 taken 35 times. ✓ Branch 6 taken 17 times.	618x	while(it != last && n_ < N)
151			{
152		433x	value_type b(*it);
153	15/24 boost::capy::buffer_array<16ul, false>::buffer_array<std::array<boost::capy::mutable_buffer, 2ul> >(std::array<boost::capy::mutable_buffer, 2ul> const&): ✓ Branch 1 taken 24 times. ✗ Branch 2 not taken. boost::capy::buffer_array<16ul, false>::buffer_array<std::span<boost::capy::mutable_buffer const, 18446744073709551615ul> >(std::span<boost::capy::mutable_buffer const, 18446744073709551615ul> const&): ✓ Branch 1 taken 12 times. ✗ Branch 2 not taken. boost::capy::buffer_array<16ul, false>::buffer_array<std::span<boost::capy::mutable_buffer, 18446744073709551615ul> >(std::span<boost::capy::mutable_buffer, 18446744073709551615ul> const&): ✓ Branch 1 taken 52 times. ✗ Branch 2 not taken. boost::capy::buffer_array<16ul, false>::buffer_array<std::vector<boost::capy::mutable_buffer, std::allocator<boost::capy::mutable_buffer> > >(std::vector<boost::capy::mutable_buffer, std::allocator<boost::capy::mutable_buffer> > const&): ✓ Branch 1 taken 96 times. ✗ Branch 2 not taken. boost::capy::buffer_array<16ul, true>::buffer_array<std::array<boost::capy::const_buffer, 2ul> >(std::array<boost::capy::const_buffer, 2ul> const&): ✓ Branch 1 taken 12 times. ✗ Branch 2 not taken. boost::capy::buffer_array<16ul, true>::buffer_array<std::span<boost::capy::const_buffer const, 18446744073709551615ul> >(std::span<boost::capy::const_buffer const, 18446744073709551615ul> const&): ✓ Branch 1 taken 12 times. ✗ Branch 2 not taken. boost::capy::buffer_array<16ul, true>::buffer_array<std::span<boost::capy::const_buffer, 18446744073709551615ul> >(std::span<boost::capy::const_buffer, 18446744073709551615ul> const&): ✓ Branch 1 taken 49 times. ✓ Branch 2 taken 2 times. boost::capy::buffer_array<16ul, true>::buffer_array<std::vector<boost::capy::const_buffer, std::allocator<boost::capy::const_buffer> > >(std::vector<boost::capy::const_buffer, std::allocator<boost::capy::const_buffer> > const&): ✓ Branch 1 taken 96 times. ✗ Branch 2 not taken. boost::capy::buffer_array<2ul, false>::buffer_array<std::vector<boost::capy::mutable_buffer, std::allocator<boost::capy::mutable_buffer> > >(std::vector<boost::capy::mutable_buffer, std::allocator<boost::capy::mutable_buffer> > const&): ✓ Branch 1 taken 4 times. ✗ Branch 2 not taken. boost::capy::buffer_array<2ul, true>::buffer_array<std::vector<boost::capy::const_buffer, std::allocator<boost::capy::const_buffer> > >(std::vector<boost::capy::const_buffer, std::allocator<boost::capy::const_buffer> > const&): ✓ Branch 1 taken 4 times. ✗ Branch 2 not taken. boost::capy::buffer_array<4ul, false>::buffer_array<std::vector<boost::capy::mutable_buffer, std::allocator<boost::capy::mutable_buffer> > >(std::vector<boost::capy::mutable_buffer, std::allocator<boost::capy::mutable_buffer> > const&): ✓ Branch 1 taken 33 times. ✓ Branch 2 taken 2 times. boost::capy::buffer_array<4ul, true>::buffer_array<std::vector<boost::capy::const_buffer, std::allocator<boost::capy::const_buffer> > >(std::vector<boost::capy::const_buffer, std::allocator<boost::capy::const_buffer> > const&): ✓ Branch 1 taken 33 times. ✓ Branch 2 taken 2 times.	433x	if(b.size() != 0)
154			{
155		427x	::new(&arr_[n_++]) value_type(b);
156		427x	size_ += b.size();
157			}
158		433x	++it;
159			}
160		185x	}
161
162			/** Construct from a buffer sequence with overflow checking.
163
164			Copies buffer descriptors from the source sequence
165			into the internal array.
166
167			@param bs The buffer sequence to copy from.
168
169			@throws std::length_error if the sequence contains
170			more than N non-empty buffers.
171			*/
172			template<class BS>
173			requires (IsConst ? ConstBufferSequence<BS> : MutableBufferSequence<BS>)
174		4x	buffer_array(std::in_place_t, BS const& bs)
175		4x	: dummy_(0)
176			{
177		4x	auto it = capy::begin(bs);
178		4x	auto const last = capy::end(bs);
179	6/8 boost::capy::buffer_array<2ul, false>::buffer_array<std::vector<boost::capy::mutable_buffer, std::allocator<boost::capy::mutable_buffer> > >(std::in_place_t, std::vector<boost::capy::mutable_buffer, std::allocator<boost::capy::mutable_buffer> > const&): ✓ Branch 1 taken 3 times. ✗ Branch 2 not taken. boost::capy::buffer_array<2ul, true>::buffer_array<std::vector<boost::capy::const_buffer, std::allocator<boost::capy::const_buffer> > >(std::in_place_t, std::vector<boost::capy::const_buffer, std::allocator<boost::capy::const_buffer> > const&): ✓ Branch 1 taken 3 times. ✗ Branch 2 not taken. boost::capy::buffer_array<4ul, false>::buffer_array<std::vector<boost::capy::mutable_buffer, std::allocator<boost::capy::mutable_buffer> > >(std::in_place_t, std::vector<boost::capy::mutable_buffer, std::allocator<boost::capy::mutable_buffer> > const&): ✓ Branch 1 taken 3 times. ✓ Branch 2 taken 1 time. boost::capy::buffer_array<4ul, true>::buffer_array<std::vector<boost::capy::const_buffer, std::allocator<boost::capy::const_buffer> > >(std::in_place_t, std::vector<boost::capy::const_buffer, std::allocator<boost::capy::const_buffer> > const&): ✓ Branch 1 taken 3 times. ✓ Branch 2 taken 1 time.	14x	while(it != last)
180			{
181		12x	value_type b(*it);
182	4/8 boost::capy::buffer_array<2ul, false>::buffer_array<std::vector<boost::capy::mutable_buffer, std::allocator<boost::capy::mutable_buffer> > >(std::in_place_t, std::vector<boost::capy::mutable_buffer, std::allocator<boost::capy::mutable_buffer> > const&): ✓ Branch 1 taken 3 times. ✗ Branch 2 not taken. boost::capy::buffer_array<2ul, true>::buffer_array<std::vector<boost::capy::const_buffer, std::allocator<boost::capy::const_buffer> > >(std::in_place_t, std::vector<boost::capy::const_buffer, std::allocator<boost::capy::const_buffer> > const&): ✓ Branch 1 taken 3 times. ✗ Branch 2 not taken. boost::capy::buffer_array<4ul, false>::buffer_array<std::vector<boost::capy::mutable_buffer, std::allocator<boost::capy::mutable_buffer> > >(std::in_place_t, std::vector<boost::capy::mutable_buffer, std::allocator<boost::capy::mutable_buffer> > const&): ✓ Branch 1 taken 3 times. ✗ Branch 2 not taken. boost::capy::buffer_array<4ul, true>::buffer_array<std::vector<boost::capy::const_buffer, std::allocator<boost::capy::const_buffer> > >(std::in_place_t, std::vector<boost::capy::const_buffer, std::allocator<boost::capy::const_buffer> > const&): ✓ Branch 1 taken 3 times. ✗ Branch 2 not taken.	12x	if(b.size() != 0)
183			{
184	6/8 boost::capy::buffer_array<2ul, false>::buffer_array<std::vector<boost::capy::mutable_buffer, std::allocator<boost::capy::mutable_buffer> > >(std::in_place_t, std::vector<boost::capy::mutable_buffer, std::allocator<boost::capy::mutable_buffer> > const&): ✓ Branch 0 taken 1 time. ✓ Branch 1 taken 2 times. boost::capy::buffer_array<2ul, true>::buffer_array<std::vector<boost::capy::const_buffer, std::allocator<boost::capy::const_buffer> > >(std::in_place_t, std::vector<boost::capy::const_buffer, std::allocator<boost::capy::const_buffer> > const&): ✓ Branch 0 taken 1 time. ✓ Branch 1 taken 2 times. boost::capy::buffer_array<4ul, false>::buffer_array<std::vector<boost::capy::mutable_buffer, std::allocator<boost::capy::mutable_buffer> > >(std::in_place_t, std::vector<boost::capy::mutable_buffer, std::allocator<boost::capy::mutable_buffer> > const&): ✗ Branch 0 not taken. ✓ Branch 1 taken 3 times. boost::capy::buffer_array<4ul, true>::buffer_array<std::vector<boost::capy::const_buffer, std::allocator<boost::capy::const_buffer> > >(std::in_place_t, std::vector<boost::capy::const_buffer, std::allocator<boost::capy::const_buffer> > const&): ✗ Branch 0 not taken. ✓ Branch 1 taken 3 times.	12x	if(n_ >= N)
185		2x	detail::throw_length_error();
186		10x	::new(&arr_[n_++]) value_type(b);
187		10x	size_ += b.size();
188			}
189		10x	++it;
190			}
191		2x	}
192
193			/** Construct from an iterator range.
194
195			Copies up to N non-empty buffer descriptors from the
196			range `[first, last)`. If the range contains more than
197			N non-empty buffers, excess buffers are silently ignored.
198
199			@param first Iterator to the first buffer descriptor.
200			@param last Iterator past the last buffer descriptor.
201			*/
202			template<class Iterator>
203		8x	buffer_array(Iterator first, Iterator last) noexcept
204		8x	: dummy_(0)
205			{
206	20/24 boost::capy::buffer_array<2ul, false>::buffer_array<__gnu_cxx::__normal_iterator<boost::capy::mutable_buffer, std::vector<boost::capy::mutable_buffer, std::allocator<boost::capy::mutable_buffer> > > >(__gnu_cxx::__normal_iterator<boost::capy::mutable_buffer, std::vector<boost::capy::mutable_buffer, std::allocator<boost::capy::mutable_buffer> > >, __gnu_cxx::__normal_iterator<boost::capy::mutable_buffer, std::vector<boost::capy::mutable_buffer, std::allocator<boost::capy::mutable_buffer> > >): ✓ Branch 1 taken 3 times. ✗ Branch 2 not taken. ✓ Branch 3 taken 2 times. ✓ Branch 4 taken 1 time. ✓ Branch 5 taken 2 times. ✓ Branch 6 taken 1 time. boost::capy::buffer_array<2ul, true>::buffer_array<__gnu_cxx::__normal_iterator<boost::capy::const_buffer, std::vector<boost::capy::const_buffer, std::allocator<boost::capy::const_buffer> > > >(__gnu_cxx::__normal_iterator<boost::capy::const_buffer, std::vector<boost::capy::const_buffer, std::allocator<boost::capy::const_buffer> > >, __gnu_cxx::__normal_iterator<boost::capy::const_buffer, std::vector<boost::capy::const_buffer, std::allocator<boost::capy::const_buffer> > >): ✓ Branch 1 taken 3 times. ✗ Branch 2 not taken. ✓ Branch 3 taken 2 times. ✓ Branch 4 taken 1 time. ✓ Branch 5 taken 2 times. ✓ Branch 6 taken 1 time. boost::capy::buffer_array<4ul, false>::buffer_array<__gnu_cxx::__normal_iterator<boost::capy::mutable_buffer, std::vector<boost::capy::mutable_buffer, std::allocator<boost::capy::mutable_buffer> > > >(__gnu_cxx::__normal_iterator<boost::capy::mutable_buffer, std::vector<boost::capy::mutable_buffer, std::allocator<boost::capy::mutable_buffer> > >, __gnu_cxx::__normal_iterator<boost::capy::mutable_buffer, std::vector<boost::capy::mutable_buffer, std::allocator<boost::capy::mutable_buffer> > >): ✓ Branch 1 taken 7 times. ✓ Branch 2 taken 3 times. ✓ Branch 3 taken 7 times. ✗ Branch 4 not taken. ✓ Branch 5 taken 7 times. ✓ Branch 6 taken 3 times. boost::capy::buffer_array<4ul, true>::buffer_array<__gnu_cxx::__normal_iterator<boost::capy::const_buffer, std::vector<boost::capy::const_buffer, std::allocator<boost::capy::const_buffer> > > >(__gnu_cxx::__normal_iterator<boost::capy::const_buffer, std::vector<boost::capy::const_buffer, std::allocator<boost::capy::const_buffer> > >, __gnu_cxx::__normal_iterator<boost::capy::const_buffer, std::vector<boost::capy::const_buffer, std::allocator<boost::capy::const_buffer> > >): ✓ Branch 1 taken 7 times. ✓ Branch 2 taken 3 times. ✓ Branch 3 taken 7 times. ✗ Branch 4 not taken. ✓ Branch 5 taken 7 times. ✓ Branch 6 taken 3 times.	26x	while(first != last && n_ < N)
207			{
208		18x	value_type b(*first);
209	6/8 boost::capy::buffer_array<2ul, false>::buffer_array<__gnu_cxx::__normal_iterator<boost::capy::mutable_buffer, std::vector<boost::capy::mutable_buffer, std::allocator<boost::capy::mutable_buffer> > > >(__gnu_cxx::__normal_iterator<boost::capy::mutable_buffer, std::vector<boost::capy::mutable_buffer, std::allocator<boost::capy::mutable_buffer> > >, __gnu_cxx::__normal_iterator<boost::capy::mutable_buffer, std::vector<boost::capy::mutable_buffer, std::allocator<boost::capy::mutable_buffer> > >): ✓ Branch 1 taken 2 times. ✗ Branch 2 not taken. boost::capy::buffer_array<2ul, true>::buffer_array<__gnu_cxx::__normal_iterator<boost::capy::const_buffer, std::vector<boost::capy::const_buffer, std::allocator<boost::capy::const_buffer> > > >(__gnu_cxx::__normal_iterator<boost::capy::const_buffer, std::vector<boost::capy::const_buffer, std::allocator<boost::capy::const_buffer> > >, __gnu_cxx::__normal_iterator<boost::capy::const_buffer, std::vector<boost::capy::const_buffer, std::allocator<boost::capy::const_buffer> > >): ✓ Branch 1 taken 2 times. ✗ Branch 2 not taken. boost::capy::buffer_array<4ul, false>::buffer_array<__gnu_cxx::__normal_iterator<boost::capy::mutable_buffer, std::vector<boost::capy::mutable_buffer, std::allocator<boost::capy::mutable_buffer> > > >(__gnu_cxx::__normal_iterator<boost::capy::mutable_buffer, std::vector<boost::capy::mutable_buffer, std::allocator<boost::capy::mutable_buffer> > >, __gnu_cxx::__normal_iterator<boost::capy::mutable_buffer, std::vector<boost::capy::mutable_buffer, std::allocator<boost::capy::mutable_buffer> > >): ✓ Branch 1 taken 5 times. ✓ Branch 2 taken 2 times. boost::capy::buffer_array<4ul, true>::buffer_array<__gnu_cxx::__normal_iterator<boost::capy::const_buffer, std::vector<boost::capy::const_buffer, std::allocator<boost::capy::const_buffer> > > >(__gnu_cxx::__normal_iterator<boost::capy::const_buffer, std::vector<boost::capy::const_buffer, std::allocator<boost::capy::const_buffer> > >, __gnu_cxx::__normal_iterator<boost::capy::const_buffer, std::vector<boost::capy::const_buffer, std::allocator<boost::capy::const_buffer> > >): ✓ Branch 1 taken 5 times. ✓ Branch 2 taken 2 times.	18x	if(b.size() != 0)
210			{
211		14x	::new(&arr_[n_++]) value_type(b);
212		14x	size_ += b.size();
213			}
214		18x	++first;
215			}
216		8x	}
217
218			/** Construct from an iterator range with overflow checking.
219
220			Copies all non-empty buffer descriptors from the range
221			`[first, last)` into the internal array.
222
223			@param first Iterator to the first buffer descriptor.
224			@param last Iterator past the last buffer descriptor.
225
226			@throws std::length_error if the range contains more
227			than N non-empty buffers.
228			*/
229			template<class Iterator>
230		4x	buffer_array(std::in_place_t, Iterator first, Iterator last)
231		4x	: dummy_(0)
232			{
233	6/8 boost::capy::buffer_array<2ul, false>::buffer_array<__gnu_cxx::__normal_iterator<boost::capy::mutable_buffer, std::vector<boost::capy::mutable_buffer, std::allocator<boost::capy::mutable_buffer> > > >(std::in_place_t, __gnu_cxx::__normal_iterator<boost::capy::mutable_buffer, std::vector<boost::capy::mutable_buffer, std::allocator<boost::capy::mutable_buffer> > >, __gnu_cxx::__normal_iterator<boost::capy::mutable_buffer, std::vector<boost::capy::mutable_buffer, std::allocator<boost::capy::mutable_buffer> > >): ✓ Branch 1 taken 3 times. ✗ Branch 2 not taken. boost::capy::buffer_array<2ul, true>::buffer_array<__gnu_cxx::__normal_iterator<boost::capy::const_buffer, std::vector<boost::capy::const_buffer, std::allocator<boost::capy::const_buffer> > > >(std::in_place_t, __gnu_cxx::__normal_iterator<boost::capy::const_buffer, std::vector<boost::capy::const_buffer, std::allocator<boost::capy::const_buffer> > >, __gnu_cxx::__normal_iterator<boost::capy::const_buffer, std::vector<boost::capy::const_buffer, std::allocator<boost::capy::const_buffer> > >): ✓ Branch 1 taken 3 times. ✗ Branch 2 not taken. boost::capy::buffer_array<4ul, false>::buffer_array<__gnu_cxx::__normal_iterator<boost::capy::mutable_buffer, std::vector<boost::capy::mutable_buffer, std::allocator<boost::capy::mutable_buffer> > > >(std::in_place_t, __gnu_cxx::__normal_iterator<boost::capy::mutable_buffer, std::vector<boost::capy::mutable_buffer, std::allocator<boost::capy::mutable_buffer> > >, __gnu_cxx::__normal_iterator<boost::capy::mutable_buffer, std::vector<boost::capy::mutable_buffer, std::allocator<boost::capy::mutable_buffer> > >): ✓ Branch 1 taken 3 times. ✓ Branch 2 taken 1 time. boost::capy::buffer_array<4ul, true>::buffer_array<__gnu_cxx::__normal_iterator<boost::capy::const_buffer, std::vector<boost::capy::const_buffer, std::allocator<boost::capy::const_buffer> > > >(std::in_place_t, __gnu_cxx::__normal_iterator<boost::capy::const_buffer, std::vector<boost::capy::const_buffer, std::allocator<boost::capy::const_buffer> > >, __gnu_cxx::__normal_iterator<boost::capy::const_buffer, std::vector<boost::capy::const_buffer, std::allocator<boost::capy::const_buffer> > >): ✓ Branch 1 taken 3 times. ✓ Branch 2 taken 1 time.	14x	while(first != last)
234			{
235		12x	value_type b(*first);
236	4/8 boost::capy::buffer_array<2ul, false>::buffer_array<__gnu_cxx::__normal_iterator<boost::capy::mutable_buffer, std::vector<boost::capy::mutable_buffer, std::allocator<boost::capy::mutable_buffer> > > >(std::in_place_t, __gnu_cxx::__normal_iterator<boost::capy::mutable_buffer, std::vector<boost::capy::mutable_buffer, std::allocator<boost::capy::mutable_buffer> > >, __gnu_cxx::__normal_iterator<boost::capy::mutable_buffer, std::vector<boost::capy::mutable_buffer, std::allocator<boost::capy::mutable_buffer> > >): ✓ Branch 1 taken 3 times. ✗ Branch 2 not taken. boost::capy::buffer_array<2ul, true>::buffer_array<__gnu_cxx::__normal_iterator<boost::capy::const_buffer, std::vector<boost::capy::const_buffer, std::allocator<boost::capy::const_buffer> > > >(std::in_place_t, __gnu_cxx::__normal_iterator<boost::capy::const_buffer, std::vector<boost::capy::const_buffer, std::allocator<boost::capy::const_buffer> > >, __gnu_cxx::__normal_iterator<boost::capy::const_buffer, std::vector<boost::capy::const_buffer, std::allocator<boost::capy::const_buffer> > >): ✓ Branch 1 taken 3 times. ✗ Branch 2 not taken. boost::capy::buffer_array<4ul, false>::buffer_array<__gnu_cxx::__normal_iterator<boost::capy::mutable_buffer, std::vector<boost::capy::mutable_buffer, std::allocator<boost::capy::mutable_buffer> > > >(std::in_place_t, __gnu_cxx::__normal_iterator<boost::capy::mutable_buffer, std::vector<boost::capy::mutable_buffer, std::allocator<boost::capy::mutable_buffer> > >, __gnu_cxx::__normal_iterator<boost::capy::mutable_buffer, std::vector<boost::capy::mutable_buffer, std::allocator<boost::capy::mutable_buffer> > >): ✓ Branch 1 taken 3 times. ✗ Branch 2 not taken. boost::capy::buffer_array<4ul, true>::buffer_array<__gnu_cxx::__normal_iterator<boost::capy::const_buffer, std::vector<boost::capy::const_buffer, std::allocator<boost::capy::const_buffer> > > >(std::in_place_t, __gnu_cxx::__normal_iterator<boost::capy::const_buffer, std::vector<boost::capy::const_buffer, std::allocator<boost::capy::const_buffer> > >, __gnu_cxx::__normal_iterator<boost::capy::const_buffer, std::vector<boost::capy::const_buffer, std::allocator<boost::capy::const_buffer> > >): ✓ Branch 1 taken 3 times. ✗ Branch 2 not taken.	12x	if(b.size() != 0)
237			{
238	6/8 boost::capy::buffer_array<2ul, false>::buffer_array<__gnu_cxx::__normal_iterator<boost::capy::mutable_buffer, std::vector<boost::capy::mutable_buffer, std::allocator<boost::capy::mutable_buffer> > > >(std::in_place_t, __gnu_cxx::__normal_iterator<boost::capy::mutable_buffer, std::vector<boost::capy::mutable_buffer, std::allocator<boost::capy::mutable_buffer> > >, __gnu_cxx::__normal_iterator<boost::capy::mutable_buffer, std::vector<boost::capy::mutable_buffer, std::allocator<boost::capy::mutable_buffer> > >): ✓ Branch 0 taken 1 time. ✓ Branch 1 taken 2 times. boost::capy::buffer_array<2ul, true>::buffer_array<__gnu_cxx::__normal_iterator<boost::capy::const_buffer, std::vector<boost::capy::const_buffer, std::allocator<boost::capy::const_buffer> > > >(std::in_place_t, __gnu_cxx::__normal_iterator<boost::capy::const_buffer, std::vector<boost::capy::const_buffer, std::allocator<boost::capy::const_buffer> > >, __gnu_cxx::__normal_iterator<boost::capy::const_buffer, std::vector<boost::capy::const_buffer, std::allocator<boost::capy::const_buffer> > >): ✓ Branch 0 taken 1 time. ✓ Branch 1 taken 2 times. boost::capy::buffer_array<4ul, false>::buffer_array<__gnu_cxx::__normal_iterator<boost::capy::mutable_buffer, std::vector<boost::capy::mutable_buffer, std::allocator<boost::capy::mutable_buffer> > > >(std::in_place_t, __gnu_cxx::__normal_iterator<boost::capy::mutable_buffer, std::vector<boost::capy::mutable_buffer, std::allocator<boost::capy::mutable_buffer> > >, __gnu_cxx::__normal_iterator<boost::capy::mutable_buffer, std::vector<boost::capy::mutable_buffer, std::allocator<boost::capy::mutable_buffer> > >): ✗ Branch 0 not taken. ✓ Branch 1 taken 3 times. boost::capy::buffer_array<4ul, true>::buffer_array<__gnu_cxx::__normal_iterator<boost::capy::const_buffer, std::vector<boost::capy::const_buffer, std::allocator<boost::capy::const_buffer> > > >(std::in_place_t, __gnu_cxx::__normal_iterator<boost::capy::const_buffer, std::vector<boost::capy::const_buffer, std::allocator<boost::capy::const_buffer> > >, __gnu_cxx::__normal_iterator<boost::capy::const_buffer, std::vector<boost::capy::const_buffer, std::allocator<boost::capy::const_buffer> > >): ✗ Branch 0 not taken. ✓ Branch 1 taken 3 times.	12x	if(n_ >= N)
239		2x	detail::throw_length_error();
240		10x	::new(&arr_[n_++]) value_type(b);
241		10x	size_ += b.size();
242			}
243		10x	++first;
244			}
245		2x	}
246
247			/** Destructor.
248			*/
249		4977x	~buffer_array()
250			{
251	12/12 boost::capy::buffer_array<16ul, false>::~buffer_array(): ✓ Branch 0 taken 492 times. ✓ Branch 1 taken 286 times. boost::capy::buffer_array<16ul, true>::~buffer_array(): ✓ Branch 0 taken 430 times. ✓ Branch 1 taken 238 times. boost::capy::buffer_array<2ul, false>::~buffer_array(): ✓ Branch 0 taken 8 times. ✓ Branch 1 taken 4 times. boost::capy::buffer_array<2ul, true>::~buffer_array(): ✓ Branch 0 taken 8 times. ✓ Branch 1 taken 4 times. boost::capy::buffer_array<4ul, false>::~buffer_array(): ✓ Branch 0 taken 2961 times. ✓ Branch 1 taken 2222 times. boost::capy::buffer_array<4ul, true>::~buffer_array(): ✓ Branch 0 taken 2961 times. ✓ Branch 1 taken 2223 times.	11837x	while(n_--)
252		6860x	arr_[n_].~value_type();
253		4977x	}
254
255			/** Copy assignment.
256			*/
257			buffer_array&
258		4x	operator=(buffer_array const& other) noexcept
259			{
260	4/8 boost::capy::buffer_array<2ul, false>::operator=(boost::capy::buffer_array<2ul, false> const&): ✓ Branch 0 taken 1 time. ✗ Branch 1 not taken. boost::capy::buffer_array<2ul, true>::operator=(boost::capy::buffer_array<2ul, true> const&): ✓ Branch 0 taken 1 time. ✗ Branch 1 not taken. boost::capy::buffer_array<4ul, false>::operator=(boost::capy::buffer_array<4ul, false> const&): ✓ Branch 0 taken 1 time. ✗ Branch 1 not taken. boost::capy::buffer_array<4ul, true>::operator=(boost::capy::buffer_array<4ul, true> const&): ✓ Branch 0 taken 1 time. ✗ Branch 1 not taken.	4x	if(this != &other)
261			{
262	4/8 boost::capy::buffer_array<2ul, false>::operator=(boost::capy::buffer_array<2ul, false> const&): ✗ Branch 0 not taken. ✓ Branch 1 taken 1 time. boost::capy::buffer_array<2ul, true>::operator=(boost::capy::buffer_array<2ul, true> const&): ✗ Branch 0 not taken. ✓ Branch 1 taken 1 time. boost::capy::buffer_array<4ul, false>::operator=(boost::capy::buffer_array<4ul, false> const&): ✗ Branch 0 not taken. ✓ Branch 1 taken 1 time. boost::capy::buffer_array<4ul, true>::operator=(boost::capy::buffer_array<4ul, true> const&): ✗ Branch 0 not taken. ✓ Branch 1 taken 1 time.	4x	while(n_--)
263		✗	arr_[n_].~value_type();
264		4x	n_ = other.n_;
265		4x	size_ = other.size_;
266	8/8 boost::capy::buffer_array<2ul, false>::operator=(boost::capy::buffer_array<2ul, false> const&): ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 1 time. boost::capy::buffer_array<2ul, true>::operator=(boost::capy::buffer_array<2ul, true> const&): ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 1 time. boost::capy::buffer_array<4ul, false>::operator=(boost::capy::buffer_array<4ul, false> const&): ✓ Branch 0 taken 1 time. ✓ Branch 1 taken 1 time. boost::capy::buffer_array<4ul, true>::operator=(boost::capy::buffer_array<4ul, true> const&): ✓ Branch 0 taken 1 time. ✓ Branch 1 taken 1 time.	10x	for(std::size_t i = 0; i < n_; ++i)
267		6x	::new(&arr_[i]) value_type(other.arr_[i]);
268			}
269		4x	return *this;
270			}
271
272			/** Return an iterator to the beginning.
273			*/
274			value_type*
275		8834x	begin() noexcept
276			{
277		8834x	return arr_;
278			}
279
280			/** Return an iterator to the beginning.
281			*/
282			value_type const*
283		11022x	begin() const noexcept
284			{
285		11022x	return arr_;
286			}
287
288			/** Return an iterator to the end.
289			*/
290			value_type*
291		8833x	end() noexcept
292			{
293		8833x	return arr_ + n_;
294			}
295
296			/** Return an iterator to the end.
297			*/
298			value_type const*
299		11022x	end() const noexcept
300			{
301		11022x	return arr_ + n_;
302			}
303
304			/** Return a span of the buffers.
305			*/
306			std::span<value_type>
307		379x	to_span() noexcept
308			{
309		379x	return { arr_, n_ };
310			}
311
312			/** Return a span of the buffers.
313			*/
314			std::span<value_type const>
315		175x	to_span() const noexcept
316			{
317		175x	return { arr_, n_ };
318			}
319
320			/** Conversion to mutable span.
321			*/
322		1x	operator std::span<value_type>() noexcept
323			{
324		1x	return { arr_, n_ };
325			}
326
327			/** Conversion to const span.
328			*/
329			operator std::span<value_type const>() const noexcept
330			{
331			return { arr_, n_ };
332			}
333
334			/** Return the total byte count in O(1).
335			*/
336			friend
337			std::size_t
338		5499x	tag_invoke(
339			size_tag const&,
340			buffer_array const& ba) noexcept
341			{
342		5499x	return ba.size_;
343			}
344
345			/** Slice customization point.
346			*/
347			friend
348			void
349		2080x	tag_invoke(
350			slice_tag const&,
351			buffer_array& ba,
352			slice_how how,
353			std::size_t n) noexcept
354			{
355		2080x	ba.slice_impl(how, n);
356		2080x	}
357
358			private:
359			void
360		2080x	slice_impl(
361			slice_how how,
362			std::size_t n) noexcept
363			{
364	4/6 boost::capy::buffer_array<4ul, false>::slice_impl(boost::capy::slice_how, unsigned long): ✓ Branch 0 taken 512 times. ✓ Branch 1 taken 528 times. ✗ Branch 2 not taken. boost::capy::buffer_array<4ul, true>::slice_impl(boost::capy::slice_how, unsigned long): ✓ Branch 0 taken 512 times. ✓ Branch 1 taken 528 times. ✗ Branch 2 not taken.	2080x	switch(how)
365			{
366		1024x	case slice_how::remove_prefix:
367		1024x	remove_prefix_impl(n);
368		1024x	break;
369
370		1056x	case slice_how::keep_prefix:
371		1056x	keep_prefix_impl(n);
372		1056x	break;
373			}
374		2080x	}
375
376			void
377		1024x	remove_prefix_impl(std::size_t n) noexcept
378			{
379		1024x	detail::buffer_array_remove_prefix(arr_, &n_, &size_, n);
380		1024x	}
381
382			void
383		1056x	keep_prefix_impl(std::size_t n) noexcept
384			{
385		1056x	detail::buffer_array_keep_prefix(arr_, &n_, &size_, n);
386		1056x	}
387			};
388
389			//------------------------------------------------
390
391			/** Alias for buffer_array holding const_buffer.
392
393			@tparam N Maximum number of buffers.
394			*/
395			template<std::size_t N>
396			using const_buffer_array = buffer_array<N, true>;
397
398			/** Alias for buffer_array holding mutable_buffer.
399
400			@tparam N Maximum number of buffers.
401			*/
402			template<std::size_t N>
403			using mutable_buffer_array = buffer_array<N, false>;
404
405			} // namespace capy
406			} // namespace boost
407
408			#endif
409