/usr/include/boost/tti/has_data.hpp is in libboost1.54-dev 1.54.0-4ubuntu3.
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 82 83 84 85 86 87 88 89 90 91 92 93 94 | // (C) Copyright Edward Diener 2012,2013
// Use, modification and distribution are subject to the Boost Software License,
// Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt).
#if !defined(BOOST_TTI_HAS_DATA_HPP)
#define BOOST_TTI_HAS_DATA_HPP
#include <boost/preprocessor/cat.hpp>
#include <boost/type_traits/remove_const.hpp>
#include <boost/tti/gen/has_data_gen.hpp>
#include <boost/tti/detail/ddata.hpp>
/*
The succeeding comments in this file are in doxygen format.
*/
/** \file
*/
/// Expands to a metafunction which tests whether member data or static member with a particular name and type exists.
/**
trait = the name of the metafunction.
name = the name of the inner member to introspect.
generates a metafunction called "trait" where 'trait' is the macro parameter.
template<class BOOST_TTI_TP_T,class BOOST_TTI_TP_TYPE>
struct trait
{
static const value = unspecified;
typedef mpl::bool_<true-or-false> type;
};
The metafunction types and return:
BOOST_TTI_TP_T = the enclosing type in which to look for our 'name'
BOOST_TTI_TP_TYPE = The type of the member data or static member.
returns = 'value' is true if the 'name' exists, with the correct data type,
otherwise 'value' is false.
*/
#define BOOST_TTI_TRAIT_HAS_DATA(trait,name) \
BOOST_TTI_DETAIL_TRAIT_HAS_DATA(trait,name) \
template<class BOOST_TTI_TP_T,class BOOST_TTI_TP_TYPE> \
struct trait : \
BOOST_PP_CAT(trait,_detail_hd) \
< \
typename boost::remove_const<BOOST_TTI_TP_T>::type, \
BOOST_TTI_TP_TYPE \
> \
{ \
}; \
/**/
/// Expands to a metafunction which tests whether member data or static member data with a particular name and type exists.
/**
name = the name of the inner member.
generates a metafunction called "has_data_name" where 'name' is the macro parameter.
template<class BOOST_TTI_TP_T,class BOOST_TTI_TP_TYPE>
struct has_data_name
{
static const value = unspecified;
typedef mpl::bool_<true-or-false> type;
};
The metafunction types and return:
BOOST_TTI_TP_T = the enclosing type in which to look for our 'name'
BOOST_TTI_TP_TYPE = The type of the member data or static member.
returns = 'value' is true if the 'name' exists, with the correct data type,
otherwise 'value' is false.
*/
#define BOOST_TTI_HAS_DATA(name) \
BOOST_TTI_TRAIT_HAS_DATA \
( \
BOOST_TTI_HAS_DATA_GEN(name), \
name \
) \
/**/
#endif // BOOST_TTI_HAS_DATA_HPP
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