1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
|
// Copyright (c) 2025 GeometryFactory Sarl (France).
//
// This file is part of CGAL (www.cgal.org).
//
// $URL: https://github.com/CGAL/cgal/blob/v6.1/STL_Extension/include/CGAL/unordered_flat_map.h $
// $Id: include/CGAL/unordered_flat_map.h b26b07a1242 $
// SPDX-License-Identifier: LGPL-3.0-or-later OR LicenseRef-Commercial
//
// Author(s) : Laurent Rineau
#ifndef CGAL_UNORDERED_FLAT_MAP_H
#define CGAL_UNORDERED_FLAT_MAP_H
#include <CGAL/config.h>
#include <boost/version.hpp>
#if BOOST_VERSION >= 108100 && !defined(CGAL_USE_BOOST_UNORDERED)
# define CGAL_USE_BOOST_UNORDERED 1
#endif
#if CGAL_USE_BARE_STD_SET
# define CGAL_USE_BARE_STD_MAP CGAL_USE_BARE_STD_SET
#endif
#if CGAL_USE_BARE_STD_MAP // to benchmark with the ordered std::map
# include <map>
# include <set>
#elif CGAL_USE_BOOST_UNORDERED
# include <boost/unordered/unordered_flat_map.hpp>
# include <boost/unordered/unordered_flat_set.hpp>
#else // Boost before 1.81.0, use the C++11 std::unordered_map
# include <boost/unordered_map.hpp>
# include <boost/unordered_set.hpp>
#endif
#include <functional> // for std::hash, std::equal_to
#include <memory> // for std::allocator
namespace CGAL {
template <
typename Key,
typename T,
typename Hash = std::hash<Key>,
typename KeyEqual = std::equal_to<Key>,
typename Allocator = std::allocator<std::pair<const Key, T>>
>
#if CGAL_USE_BARE_STD_MAP
using unordered_flat_map = std::map<Key, T, std::less<Key>, Allocator>;
#elif CGAL_USE_BOOST_UNORDERED
using unordered_flat_map = boost::unordered_flat_map<Key, T, Hash, KeyEqual, Allocator>;
#else // use the Boost implementation of C++11 std::unordered_map (for noexcept)
using unordered_flat_map = boost::unordered_map<Key, T, Hash, KeyEqual, Allocator>;
#endif
template <
typename Key,
typename Hash = std::hash<Key>,
typename KeyEqual = std::equal_to<Key>,
typename Allocator = std::allocator<Key>
>
#if CGAL_USE_BARE_STD_MAP
using unordered_flat_set = std::set<Key, std::less<Key>, Allocator>;
#elif CGAL_USE_BOOST_UNORDERED
using unordered_flat_set = boost::unordered_flat_set<Key, Hash, KeyEqual, Allocator>;
#else // use the Boost implementation of C++11 std::unordered_set (for noexcept)
using unordered_flat_set = boost::unordered_set<Key, Hash, KeyEqual, Allocator>;
#endif
} // end namespace CGAL
#endif // CGAL_UNORDERED_FLAT_MAP_H
|
