| 1 | |
|---|
| 2 | // (C) Copyright Dave Abrahams, Steve Cleary, Beman Dawes, |
|---|
| 3 | // Howard Hinnant and John Maddock 2000. |
|---|
| 4 | // (C) Copyright Mat Marcus, Jesse Jones and Adobe Systems Inc 2001 |
|---|
| 5 | |
|---|
| 6 | // Use, modification and distribution are subject to the Boost Software License, |
|---|
| 7 | // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at |
|---|
| 8 | // http://www.boost.org/LICENSE_1_0.txt). |
|---|
| 9 | // |
|---|
| 10 | // See http://www.boost.org/libs/type_traits for most recent version including documentation. |
|---|
| 11 | |
|---|
| 12 | // Fixed is_pointer, is_reference, is_const, is_volatile, is_same, |
|---|
| 13 | // is_member_pointer based on the Simulated Partial Specialization work |
|---|
| 14 | // of Mat Marcus and Jesse Jones. See http://opensource.adobe.com or |
|---|
| 15 | // http://groups.yahoo.com/group/boost/message/5441 |
|---|
| 16 | // Some workarounds in here use ideas suggested from "Generic<Programming>: |
|---|
| 17 | // Mappings between Types and Values" |
|---|
| 18 | // by Andrei Alexandrescu (see http://www.cuj.com/experts/1810/alexandr.html). |
|---|
| 19 | |
|---|
| 20 | |
|---|
| 21 | #ifndef BOOST_TT_IS_SAME_HPP_INCLUDED |
|---|
| 22 | #define BOOST_TT_IS_SAME_HPP_INCLUDED |
|---|
| 23 | |
|---|
| 24 | #include <boost/type_traits/integral_constant.hpp> |
|---|
| 25 | |
|---|
| 26 | namespace boost { |
|---|
| 27 | |
|---|
| 28 | |
|---|
| 29 | template <class T, class U> struct is_same : public false_type {}; |
|---|
| 30 | template <class T> struct is_same<T,T> : public true_type {}; |
|---|
| 31 | #if BOOST_WORKAROUND(__BORLANDC__, < 0x600) |
|---|
| 32 | // without this, Borland's compiler gives the wrong answer for |
|---|
| 33 | // references to arrays: |
|---|
| 34 | template <class T> struct is_same<T&, T&> : public true_type{}; |
|---|
| 35 | #endif |
|---|
| 36 | |
|---|
| 37 | |
|---|
| 38 | } // namespace boost |
|---|
| 39 | |
|---|
| 40 | #endif // BOOST_TT_IS_SAME_HPP_INCLUDED |
|---|
| 41 | |
|---|
| 42 | |
|---|
