/usr/include/claw/meta/conditional.hpp is in libclaw-dev 1.7.4-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 | /*
CLAW - a C++ Library Absolutely Wonderful
CLAW is a free library without any particular aim but being useful to
anyone.
Copyright (C) 2005-2011 Julien Jorge
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
contact: julien.jorge@gamned.org
*/
/**
* \file conditional.hpp
* \brief Structures for meta-programming.
* \author Julien Jorge
*/
#ifndef __CLAW_CONDITIONAL_HPP__
#define __CLAW_CONDITIONAL_HPP__
namespace claw
{
namespace meta
{
/**
* \brief This structure allows to do conditional typing.
*
* \b Template \b parameters
* - \a Cond The result of the predicate to check.
* - \a ThenPart The type defined when the predicate is true.
* - \a ElsePart The type defined when the predicate is false.
*
* The result can be retrieved via the if_then_else::result type.
*
* \author Julien Jorge
*/
template<bool Cond, typename ThenPart, typename ElsePart>
struct if_then_else;
/**
* \brief Specialization for the case where the condition evaluates to
* true.
*/
template<typename ThenPart, typename ElsePart>
struct if_then_else<true, ThenPart, ElsePart>
{
/** \brief When the condition evaluates to true, the result is the "else"
part. */
typedef ThenPart result;
}; // struct if_then_else [true]
/**
* \brief Specialization for the case where the condition evaluates to
* false.
*/
template<typename ThenPart, typename ElsePart>
struct if_then_else<false, ThenPart, ElsePart>
{
/** \brief When the condition evaluates to false, the result is the "else"
part. */
typedef ElsePart result;
}; // struct if_then_else [false]
} // namespace meta
} // namespace claw
#endif // __CLAW_CONDITIONAL_HPP__
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