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02855d7fed
git-subtree-dir: src/websocketpp git-subtree-split: 875d420952d2c47d38de15952a401f00773cdffc
90 lines
3.2 KiB
C++
90 lines
3.2 KiB
C++
/*
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* Copyright (c) 2014, Peter Thorson. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of the WebSocket++ Project nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL PETER THORSON BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#ifndef WEBSOCKETPP_COMMON_FUNCTIONAL_HPP
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#define WEBSOCKETPP_COMMON_FUNCTIONAL_HPP
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#if defined _WEBSOCKETPP_CPP11_STL_ && !defined _WEBSOCKETPP_NO_CPP11_FUNCTIONAL_
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#ifndef _WEBSOCKETPP_CPP11_FUNCTIONAL_
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#define _WEBSOCKETPP_CPP11_FUNCTIONAL_
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#endif
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#endif
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#ifdef _WEBSOCKETPP_CPP11_FUNCTIONAL_
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#include <functional>
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#else
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#include <boost/bind.hpp>
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#include <boost/function.hpp>
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#include <boost/ref.hpp>
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#endif
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namespace websocketpp {
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namespace lib {
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#ifdef _WEBSOCKETPP_CPP11_FUNCTIONAL_
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using std::function;
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using std::bind;
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using std::ref;
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namespace placeholders = std::placeholders;
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// There are some cases where a C++11 compiler balks at using std::ref
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// but a C++03 compiler using boost function requires boost::ref. As such
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// lib::ref is not useful in these cases. Instead this macro allows the use
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// of boost::ref in the case of a boost compile or no reference wrapper at
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// all in the case of a C++11 compile
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#define _WEBSOCKETPP_REF(x) x
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template <typename T>
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void clear_function(T & x) {
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x = nullptr;
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}
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#else
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using boost::function;
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using boost::bind;
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using boost::ref;
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namespace placeholders {
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/// \todo this feels hacky, is there a better way?
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using ::_1;
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using ::_2;
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}
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// See above definition for more details on what this is and why it exists
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#define _WEBSOCKETPP_REF(x) boost::ref(x)
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template <typename T>
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void clear_function(T & x) {
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x.clear();
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}
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#endif
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} // namespace lib
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} // namespace websocketpp
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#endif // WEBSOCKETPP_COMMON_FUNCTIONAL_HPP
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