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Commit 1f868695 authored by Davis King's avatar Davis King
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dlib/enable_if.h
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// Boost enable_if library
// Copyright 2003 (C) The Trustees of Indiana University. // Copyright 2003 (C) The Trustees of Indiana University.
// Use, modification, and distribution is subject to the Boost Software // Use, modification, and distribution is subject to the Boost Software
// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at // License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt) // http://www.boost.org/LICENSE_1_0.txt)
// Authors: Jaakko Jarvi (jajarvi at osl.iu.edu) // Authors: Jaakko Jarvi (jajarvi at osl.iu.edu)
// Jeremiah Willcock (jewillco at osl.iu.edu) // Jeremiah Willcock (jewillco at osl.iu.edu)
// Andrew Lumsdaine (lums at osl.iu.edu) // Andrew Lumsdaine (lums at osl.iu.edu)
#ifndef DLIB_BOOST_UTILITY_ENABLE_IF_HPP #ifndef DLIB_BOOST_UTILITY_ENABLE_IF_HPP
#define DLIB_BOOST_UTILITY_ENABLE_IF_HPP #define DLIB_BOOST_UTILITY_ENABLE_IF_HPP
namespace dlib
#ifndef BOOST_UTILITY_ENABLE_IF_HPP
#define BOOST_UTILITY_ENABLE_IF_HPP
// Even the definition of enable_if causes problems on some compilers,
// so it's macroed out for all compilers that do not support SFINAE
#ifndef BOOST_NO_SFINAE
namespace boost
{ {
template <bool B, class T = void> template <bool B, class T = void>
...@@ -70,71 +56,7 @@ namespace boost ...@@ -70,71 +56,7 @@ namespace boost
template <class Cond, class T> template <class Cond, class T>
struct lazy_disable_if : public lazy_disable_if_c<Cond::value, T> {}; struct lazy_disable_if : public lazy_disable_if_c<Cond::value, T> {};
} // namespace boost } // namespace dlib
#else
namespace boost
{
namespace detail { typedef void enable_if_default_T; }
template <typename T>
struct enable_if_does_not_work_on_this_compiler;
template <bool B, class T = detail::enable_if_default_T>
struct enable_if_c : enable_if_does_not_work_on_this_compiler<T>
{ };
template <bool B, class T = detail::enable_if_default_T>
struct disable_if_c : enable_if_does_not_work_on_this_compiler<T>
{ };
template <bool B, class T = detail::enable_if_default_T>
struct lazy_enable_if_c : enable_if_does_not_work_on_this_compiler<T>
{ };
template <bool B, class T = detail::enable_if_default_T>
struct lazy_disable_if_c : enable_if_does_not_work_on_this_compiler<T>
{ };
template <class Cond, class T = detail::enable_if_default_T>
struct enable_if : enable_if_does_not_work_on_this_compiler<T>
{ };
template <class Cond, class T = detail::enable_if_default_T>
struct disable_if : enable_if_does_not_work_on_this_compiler<T>
{ };
template <class Cond, class T = detail::enable_if_default_T>
struct lazy_enable_if : enable_if_does_not_work_on_this_compiler<T>
{ };
template <class Cond, class T = detail::enable_if_default_T>
struct lazy_disable_if : enable_if_does_not_work_on_this_compiler<T>
{ };
} // namespace boost
#endif // BOOST_NO_SFINAE
#endif // BOOST_UTILITY_ENABLE_IF_HPP
namespace dlib
{
using boost::enable_if_c;
using boost::enable_if_c;
using boost::enable_if;
using boost::lazy_enable_if_c;
using boost::lazy_enable_if_c;
using boost::lazy_enable_if;
using boost::disable_if_c;
using boost::disable_if_c;
using boost::disable_if;
using boost::lazy_disable_if_c;
using boost::lazy_disable_if_c;
using boost::lazy_disable_if;
}
#endif // DLIB_BOOST_UTILITY_ENABLE_IF_HPP #endif // DLIB_BOOST_UTILITY_ENABLE_IF_HPP
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