Mercurial > hg > CbC > CbC_gcc
diff gcc/array-traits.h @ 145:1830386684a0
gcc-9.2.0
author | anatofuz |
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date | Thu, 13 Feb 2020 11:34:05 +0900 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/gcc/array-traits.h Thu Feb 13 11:34:05 2020 +0900 @@ -0,0 +1,48 @@ +/* Descriptions of array-like objects. + Copyright (C) 2019-2020 Free Software Foundation, Inc. + +This file is part of GCC. + +GCC is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free +Software Foundation; either version 3, or (at your option) any later +version. + +GCC is distributed in the hope that it will be useful, but WITHOUT ANY +WARRANTY; without even the implied warranty of MERCHANTABILITY or +FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License +for more details. + +You should have received a copy of the GNU General Public License +along with GCC; see the file COPYING3. If not see +<http://www.gnu.org/licenses/>. */ + +#ifndef GCC_ARRAY_TRAITS_H +#define GCC_ARRAY_TRAITS_H + +/* Implementation for single integers (and similar types). */ +template<typename T, T zero = T (0)> +struct scalar_array_traits +{ + typedef T element_type; + static const bool has_constant_size = true; + static const size_t constant_size = 1; + static const T *base (const T &x) { return &x; } + static size_t size (const T &) { return 1; } +}; + +template<typename T> +struct array_traits : scalar_array_traits<T> {}; + +/* Implementation for arrays with a static size. */ +template<typename T, size_t N> +struct array_traits<T[N]> +{ + typedef T element_type; + static const bool has_constant_size = true; + static const size_t constant_size = N; + static const T *base (const T (&x)[N]) { return x; } + static size_t size (const T (&)[N]) { return N; } +}; + +#endif