mirror of
https://github.com/VCMP-SqMod/SqMod.git
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163 lines
6.8 KiB
C++
163 lines
6.8 KiB
C++
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/*
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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_CPP11_HPP
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#define WEBSOCKETPP_COMMON_CPP11_HPP
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/**
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* This header sets up some constants based on the state of C++11 support
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*/
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// Hide clang feature detection from other compilers
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#ifndef __has_feature // Optional of course.
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#define __has_feature(x) 0 // Compatibility with non-clang compilers.
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#endif
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#ifndef __has_extension
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#define __has_extension __has_feature // Compatibility with pre-3.0 compilers.
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#endif
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// The code below attempts to use information provided by the build system or
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// user supplied defines to selectively enable C++11 language and library
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// features. In most cases features that are targeted individually may also be
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// selectively disabled via an associated _WEBSOCKETPP_NOXXX_ define.
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#if defined(_WEBSOCKETPP_CPP11_STL_) || __cplusplus >= 201103L || defined(_WEBSOCKETPP_CPP11_STRICT_)
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// This check tests for blanket c++11 coverage. It can be activated in one
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// of three ways. Either the compiler itself reports that it is a full
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// C++11 compiler via the __cplusplus macro or the user/build system
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// supplies one of the two preprocessor defines below:
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// This is defined to allow other WebSocket++ common headers to enable
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// C++11 features when they are detected by this file rather than
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// duplicating the above logic in every common header.
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#define _WEBSOCKETPP_CPP11_INTERNAL_
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// _WEBSOCKETPP_CPP11_STRICT_
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//
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// This define reports to WebSocket++ that 100% of the language and library
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// features of C++11 are available. Using this define on a non-C++11
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// compiler will result in problems.
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// _WEBSOCKETPP_CPP11_STL_
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//
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// This define enables *most* C++11 options that were implemented early on
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// by compilers. It is typically used for compilers that have many, but not
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// all C++11 features. It should be safe to use on GCC 4.7-4.8 and perhaps
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// earlier.
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#ifndef _WEBSOCKETPP_NOEXCEPT_TOKEN_
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#define _WEBSOCKETPP_NOEXCEPT_TOKEN_ noexcept
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#endif
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#ifndef _WEBSOCKETPP_CONSTEXPR_TOKEN_
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#define _WEBSOCKETPP_CONSTEXPR_TOKEN_ constexpr
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#endif
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#ifndef _WEBSOCKETPP_INITIALIZER_LISTS_
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#define _WEBSOCKETPP_INITIALIZER_LISTS_
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#endif
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#ifndef _WEBSOCKETPP_NULLPTR_TOKEN_
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#define _WEBSOCKETPP_NULLPTR_TOKEN_ nullptr
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#endif
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#ifndef _WEBSOCKETPP_MOVE_SEMANTICS_
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#define _WEBSOCKETPP_MOVE_SEMANTICS_
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#endif
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#ifndef _WEBSOCKETPP_DEFAULT_DELETE_FUNCTIONS_
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#define _WEBSOCKETPP_DEFAULT_DELETE_FUNCTIONS_
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#endif
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#ifndef __GNUC__
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// GCC as of version 4.9 (latest) does not support std::put_time yet.
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// so ignore it
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#define _WEBSOCKETPP_PUTTIME_
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#endif
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#else
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// In the absence of a blanket define, try to use compiler versions or
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// feature testing macros to selectively enable what we can.
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// Test for noexcept
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#ifndef _WEBSOCKETPP_NOEXCEPT_TOKEN_
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#ifdef _WEBSOCKETPP_NOEXCEPT_
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// build system says we have noexcept
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#define _WEBSOCKETPP_NOEXCEPT_TOKEN_ noexcept
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#else
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#if __has_feature(cxx_noexcept)
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// clang feature detect says we have noexcept
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#define _WEBSOCKETPP_NOEXCEPT_TOKEN_ noexcept
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#elif defined(_MSC_VER) && _MSC_VER >= 1900
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// Visual Studio 2015+ has noexcept
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#define _WEBSOCKETPP_NOEXCEPT_TOKEN_ noexcept
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#else
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// assume we don't have noexcept
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#define _WEBSOCKETPP_NOEXCEPT_TOKEN_
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#endif
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#endif
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#endif
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// Test for constexpr
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#ifndef _WEBSOCKETPP_CONSTEXPR_TOKEN_
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#ifdef _WEBSOCKETPP_CONSTEXPR_
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// build system says we have constexpr
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#define _WEBSOCKETPP_CONSTEXPR_TOKEN_ constexpr
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#else
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#if __has_feature(cxx_constexpr)
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// clang feature detect says we have constexpr
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#define _WEBSOCKETPP_CONSTEXPR_TOKEN_ constexpr
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#elif defined(_MSC_VER) && _MSC_VER >= 1900
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// Visual Studio 2015+ has constexpr
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#define _WEBSOCKETPP_CONSTEXPR_TOKEN_ constexpr
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#else
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// assume we don't have constexpr
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#define _WEBSOCKETPP_CONSTEXPR_TOKEN_
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#endif
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#endif
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#endif
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// Enable initializer lists on clang when available.
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#if __has_feature(cxx_generalized_initializers) && !defined(_WEBSOCKETPP_INITIALIZER_LISTS_)
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#define _WEBSOCKETPP_INITIALIZER_LISTS_
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#endif
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// Test for nullptr
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#ifndef _WEBSOCKETPP_NULLPTR_TOKEN_
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#ifdef _WEBSOCKETPP_NULLPTR_
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// build system says we have nullptr
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#define _WEBSOCKETPP_NULLPTR_TOKEN_ nullptr
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#else
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#if __has_feature(cxx_nullptr)
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// clang feature detect says we have nullptr
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#define _WEBSOCKETPP_NULLPTR_TOKEN_ nullptr
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#elif defined(_MSC_VER) &&_MSC_VER >= 1600
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// Visual Studio version that has nullptr
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#define _WEBSOCKETPP_NULLPTR_TOKEN_ nullptr
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#else
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// assume we don't have nullptr
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#define _WEBSOCKETPP_NULLPTR_TOKEN_ 0
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#endif
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#endif
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#endif
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#endif
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#endif // WEBSOCKETPP_COMMON_CPP11_HPP
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