103 lines
2.8 KiB
Plaintext
103 lines
2.8 KiB
Plaintext
|
|
||
|
|
// 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
|