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148909bc | 1 | /* Descriptions of array-like objects. |
8d9254fc | 2 | Copyright (C) 2019-2020 Free Software Foundation, Inc. |
148909bc RS |
3 | |
4 | This file is part of GCC. | |
5 | ||
6 | GCC is free software; you can redistribute it and/or modify it under | |
7 | the terms of the GNU General Public License as published by the Free | |
8 | Software Foundation; either version 3, or (at your option) any later | |
9 | version. | |
10 | ||
11 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
12 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
13 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
14 | for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GCC; see the file COPYING3. If not see | |
18 | <http://www.gnu.org/licenses/>. */ | |
19 | ||
20 | #ifndef GCC_ARRAY_TRAITS_H | |
21 | #define GCC_ARRAY_TRAITS_H | |
22 | ||
23 | /* Implementation for single integers (and similar types). */ | |
24 | template<typename T, T zero = T (0)> | |
25 | struct scalar_array_traits | |
26 | { | |
27 | typedef T element_type; | |
28 | static const bool has_constant_size = true; | |
29 | static const size_t constant_size = 1; | |
30 | static const T *base (const T &x) { return &x; } | |
31 | static size_t size (const T &) { return 1; } | |
32 | }; | |
33 | ||
34 | template<typename T> | |
35 | struct array_traits : scalar_array_traits<T> {}; | |
36 | ||
37 | /* Implementation for arrays with a static size. */ | |
38 | template<typename T, size_t N> | |
39 | struct array_traits<T[N]> | |
40 | { | |
41 | typedef T element_type; | |
42 | static const bool has_constant_size = true; | |
43 | static const size_t constant_size = N; | |
44 | static const T *base (const T (&x)[N]) { return x; } | |
7dbc2e3b | 45 | static size_t size (const T (&)[N]) { return N; } |
148909bc RS |
46 | }; |
47 | ||
48 | #endif |