| /*============================================================================= |
| Copyright (c) 2001-2007 Joel de Guzman |
| |
| Distributed under 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) |
| ==============================================================================*/ |
| #ifndef PHOENIX_OPERATOR_DETAIL_IO_HPP |
| #define PHOENIX_OPERATOR_DETAIL_IO_HPP |
| |
| #include <boost/spirit/home/phoenix/operator/bitwise.hpp> |
| #include <boost/spirit/home/phoenix/core/reference.hpp> |
| #include <boost/utility/addressof.hpp> |
| #include <boost/utility/enable_if.hpp> |
| #include <iostream> |
| |
| namespace boost { namespace phoenix { namespace detail |
| { |
| typedef char(&no)[1]; |
| typedef char(&yes)[2]; |
| |
| template <typename CharType, typename CharTrait> |
| yes ostream_test(std::basic_ostream<CharType, CharTrait>*); |
| no ostream_test(...); |
| |
| template <typename CharType, typename CharTrait> |
| yes istream_test(std::basic_istream<CharType, CharTrait>*); |
| no istream_test(...); |
| |
| template <typename T> |
| struct is_ostream |
| { |
| static T x; |
| BOOST_STATIC_CONSTANT(bool, |
| value = sizeof(detail::ostream_test(boost::addressof(x))) == sizeof(yes)); |
| }; |
| |
| template <typename T> |
| struct is_istream |
| { |
| static T x; |
| BOOST_STATIC_CONSTANT(bool, |
| value = sizeof(detail::istream_test(boost::addressof(x))) == sizeof(yes)); |
| }; |
| |
| template <typename T0, typename T1> |
| struct enable_if_ostream : |
| enable_if< |
| detail::is_ostream<T0> |
| , actor< |
| typename as_composite< |
| shift_left_eval |
| , actor<reference<T0> > |
| , actor<T1> |
| >::type |
| > |
| > |
| {}; |
| |
| template <typename T0, typename T1> |
| struct enable_if_istream : |
| enable_if< |
| detail::is_istream<T0> |
| , actor< |
| typename as_composite< |
| shift_right_eval |
| , actor<reference<T0> > |
| , actor<T1> |
| >::type |
| > |
| > |
| {}; |
| |
| typedef std::ios_base& (*iomanip_type)(std::ios_base&); |
| typedef std::istream& (*imanip_type)(std::istream&); |
| typedef std::ostream& (*omanip_type)(std::ostream&); |
| }}} |
| |
| #endif |