blob: 8d3fc89fe75ce7dcc012371343ad7f960b153455 (
plain)
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
95
96
97
98
99
100
101
102
|
// Copyright 2000 John Maddock (john@johnmaddock.co.uk)
// Copyright 2002 Aleksey Gurtovoy (agurtovoy@meta-comm.com)
//
// 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).
//
// See http://www.boost.org/libs/type_traits for most recent version including documentation.
#ifndef BOOST_TT_IS_FUNCTION_HPP_INCLUDED
#define BOOST_TT_IS_FUNCTION_HPP_INCLUDED
#include <boost/type_traits/is_reference.hpp>
#include <boost/type_traits/detail/config.hpp>
#if !defined(BOOST_TT_TEST_MS_FUNC_SIGS)
# include <boost/type_traits/detail/is_function_ptr_helper.hpp>
#else
# include <boost/type_traits/detail/is_function_ptr_tester.hpp>
# include <boost/type_traits/detail/yes_no_type.hpp>
#endif
// is a type a function?
// Please note that this implementation is unnecessarily complex:
// we could just use !is_convertible<T*, const volatile void*>::value,
// except that some compilers erroneously allow conversions from
// function pointers to void*.
namespace boost {
#if !defined( __CODEGEARC__ )
namespace detail {
#if !defined(BOOST_TT_TEST_MS_FUNC_SIGS)
template<bool is_ref = true>
struct is_function_chooser
{
template< typename T > struct result_
: public false_type {};
};
template <>
struct is_function_chooser<false>
{
template< typename T > struct result_
: public ::boost::type_traits::is_function_ptr_helper<T*> {};
};
template <typename T>
struct is_function_impl
: public is_function_chooser< ::boost::is_reference<T>::value >
::BOOST_NESTED_TEMPLATE result_<T>
{
};
#else
template <typename T>
struct is_function_impl
{
#if BOOST_WORKAROUND(BOOST_MSVC_FULL_VER, >= 140050000)
#pragma warning(push)
#pragma warning(disable:6334)
#endif
static T* t;
BOOST_STATIC_CONSTANT(
bool, value = sizeof(::boost::type_traits::is_function_ptr_tester(t))
== sizeof(::boost::type_traits::yes_type)
);
#if BOOST_WORKAROUND(BOOST_MSVC_FULL_VER, >= 140050000)
#pragma warning(pop)
#endif
};
template <typename T>
struct is_function_impl<T&> : public false_type
{};
#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
template <typename T>
struct is_function_impl<T&&> : public false_type
{};
#endif
#endif
} // namespace detail
#endif // !defined( __CODEGEARC__ )
#if defined( __CODEGEARC__ )
template <class T> struct is_function : integral_constant<bool, __is_function(T)> {};
#else
template <class T> struct is_function : integral_constant<bool, ::boost::detail::is_function_impl<T>::value> {};
#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
template <class T> struct is_function<T&&> : public false_type {};
#endif
#endif
} // namespace boost
#endif // BOOST_TT_IS_FUNCTION_HPP_INCLUDED
|
