/* * Copyright (c) 2014, Peter Thorson. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * Neither the name of the WebSocket++ Project nor the * names of its contributors may be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL PETER THORSON BE LIABLE FOR ANY * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifndef WEBSOCKETPP_COMMON_FUNCTIONAL_HPP #define WEBSOCKETPP_COMMON_FUNCTIONAL_HPP #include // If we've determined that we're in full C++11 mode and the user hasn't // explicitly disabled the use of C++11 functional header, then prefer it to // boost. #if defined _WEBSOCKETPP_CPP11_INTERNAL_ && !defined _WEBSOCKETPP_NO_CPP11_FUNCTIONAL_ #ifndef _WEBSOCKETPP_CPP11_FUNCTIONAL_ #define _WEBSOCKETPP_CPP11_FUNCTIONAL_ #endif #endif // If we're on Visual Studio 2010 or higher and haven't explicitly disabled // the use of C++11 functional header then prefer it to boost. #if defined(_MSC_VER) && _MSC_VER >= 1600 && !defined _WEBSOCKETPP_NO_CPP11_FUNCTIONAL_ #ifndef _WEBSOCKETPP_CPP11_FUNCTIONAL_ #define _WEBSOCKETPP_CPP11_FUNCTIONAL_ #endif #endif #ifdef _WEBSOCKETPP_CPP11_FUNCTIONAL_ #include #else #include #include #include #endif namespace websocketpp { namespace lib { #ifdef _WEBSOCKETPP_CPP11_FUNCTIONAL_ using std::function; using std::bind; using std::ref; namespace placeholders = std::placeholders; // There are some cases where a C++11 compiler balks at using std::ref // but a C++03 compiler using boost function requires boost::ref. As such // lib::ref is not useful in these cases. Instead this macro allows the use // of boost::ref in the case of a boost compile or no reference wrapper at // all in the case of a C++11 compile #define _WEBSOCKETPP_REF(x) x template void clear_function(T & x) { x = nullptr; } #else using boost::function; using boost::bind; using boost::ref; namespace placeholders { /// \todo this feels hacky, is there a better way? using ::_1; using ::_2; using ::_3; } // See above definition for more details on what this is and why it exists #define _WEBSOCKETPP_REF(x) boost::ref(x) template void clear_function(T & x) { x.clear(); } #endif } // namespace lib } // namespace websocketpp #endif // WEBSOCKETPP_COMMON_FUNCTIONAL_HPP