diff options
Diffstat (limited to 'include/sal/macros.h')
-rw-r--r-- | include/sal/macros.h | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/include/sal/macros.h b/include/sal/macros.h new file mode 100644 index 0000000000..2705fa63f4 --- /dev/null +++ b/include/sal/macros.h @@ -0,0 +1,62 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed + * with this work for additional information regarding copyright + * ownership. The ASF licenses this file to you under the Apache + * License, Version 2.0 (the "License"); you may not use this file + * except in compliance with the License. You may obtain a copy of + * the License at http://www.apache.org/licenses/LICENSE-2.0 . + */ + +/* + * This file is part of LibreOffice published API. + */ + +#ifndef INCLUDED_SAL_MACROS_H +#define INCLUDED_SAL_MACROS_H + +#include <stddef.h> + +#ifndef SAL_N_ELEMENTS +# if defined(__cplusplus) && ( defined(__GXX_EXPERIMENTAL_CXX0X__) || __cplusplus >= 201103L ) + /* + * Magic template to calculate at compile time the number of elements + * in an array. Enforcing that the argument must be an array and not + * a pointer, e.g. + * char *pFoo="foo"; + * SAL_N_ELEMENTS(pFoo); + * fails while + * SAL_N_ELEMENTS("foo"); + * or + * char aFoo[]="foo"; + * SAL_N_ELEMENTS(aFoo); + * pass + * + * Unfortunately if arr is an array of an anonymous class then we need + * C++0x, i.e. see + * http://www.open-std.org/jtc1/sc22/wg21/docs/cwg_defects.html#757 + */ + template <typename T, size_t S> char (&sal_n_array_size( T(&)[S] ))[S]; +# define SAL_N_ELEMENTS(arr) (sizeof(sal_n_array_size(arr))) +# else +# define SAL_N_ELEMENTS(arr) (sizeof (arr) / sizeof ((arr)[0])) +# endif +#endif + +#ifndef SAL_STRINGIFY +# define SAL_STRINGIFY_ARG(x) #x +# define SAL_STRINGIFY(x) SAL_STRINGIFY_ARG(x) +#endif + +#endif + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |