1 | //Copyright (c) 2006-2009 Emil Dotchevski and Reverge Studios, Inc. |
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2 | |
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3 | //Distributed under the Boost Software License, Version 1.0. (See accompanying |
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4 | //file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) |
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5 | |
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6 | #ifndef UUID_898984B4076411DD973EDFA055D89593 |
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7 | #define UUID_898984B4076411DD973EDFA055D89593 |
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8 | #if defined(__GNUC__) && !defined(BOOST_EXCEPTION_ENABLE_WARNINGS) |
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9 | #pragma GCC system_header |
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10 | #endif |
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11 | #if defined(_MSC_VER) && !defined(BOOST_EXCEPTION_ENABLE_WARNINGS) |
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12 | #pragma warning(push,1) |
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13 | #endif |
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14 | |
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15 | #include <ostream> |
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16 | |
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17 | namespace |
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18 | boost |
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19 | { |
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20 | namespace |
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21 | to_string_detail |
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22 | { |
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23 | struct |
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24 | partial_ordering_helper1 |
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25 | { |
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26 | template <class CharT,class Traits> |
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27 | partial_ordering_helper1( std::basic_ostream<CharT,Traits> & ); |
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28 | }; |
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29 | |
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30 | struct |
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31 | partial_ordering_helper2 |
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32 | { |
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33 | template <class T> |
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34 | partial_ordering_helper2( T const & ); |
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35 | }; |
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36 | |
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37 | char operator<<( partial_ordering_helper1, partial_ordering_helper2 ); |
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38 | |
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39 | template <class T,class CharT,class Traits> |
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40 | struct |
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41 | is_output_streamable_impl |
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42 | { |
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43 | static std::basic_ostream<CharT,Traits> & f(); |
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44 | static T const & g(); |
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45 | enum e { value=1!=(sizeof(f()<<g())) }; |
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46 | }; |
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47 | } |
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48 | |
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49 | template <class T, class CharT=char, class Traits=std::char_traits<CharT> > |
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50 | struct |
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51 | is_output_streamable |
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52 | { |
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53 | enum e { value=to_string_detail::is_output_streamable_impl<T,CharT,Traits>::value }; |
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54 | }; |
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55 | } |
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56 | |
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57 | #if defined(_MSC_VER) && !defined(BOOST_EXCEPTION_ENABLE_WARNINGS) |
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58 | #pragma warning(pop) |
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59 | #endif |
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60 | #endif |
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