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3rdparty/websocketpp-0.8.2/websocketpp/extensions/extension.hpp 3.41 KB
1fa7ee12   Hu Chunming   提交 _GLIBCXX_USE_C...
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  /*
   * 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_EXTENSION_HPP
  #define WEBSOCKETPP_EXTENSION_HPP
  
  #include <websocketpp/common/cpp11.hpp>
  #include <websocketpp/common/system_error.hpp>
  
  #include <string>
  #include <vector>
  
  namespace websocketpp {
  
  /**
   * Some generic information about extensions
   *
   * Each extension object has an implemented flag. It can be retrieved by calling
   * is_implemented(). This compile time flag indicates whether or not the object
   * in question actually implements the extension or if it is a placeholder stub
   *
   * Each extension object also has an enabled flag. It can be retrieved by
   * calling is_enabled(). This runtime flag indicates whether or not the
   * extension has been negotiated for this connection.
   */
  namespace extensions {
  
  namespace error {
  enum value {
      /// Catch all
      general = 1,
  
      /// Extension disabled
      disabled
  };
  
  class category : public lib::error_category {
  public:
      category() {}
  
      const char *name() const _WEBSOCKETPP_NOEXCEPT_TOKEN_ {
          return "websocketpp.extension";
      }
  
      std::string message(int value) const {
          switch(value) {
              case general:
                  return "Generic extension error";
              case disabled:
                  return "Use of methods from disabled extension";
              default:
                  return "Unknown permessage-compress error";
          }
      }
  };
  
  inline lib::error_category const & get_category() {
      static category instance;
      return instance;
  }
  
  inline lib::error_code make_error_code(error::value e) {
      return lib::error_code(static_cast<int>(e), get_category());
  }
  
  } // namespace error
  } // namespace extensions
  } // namespace websocketpp
  
  _WEBSOCKETPP_ERROR_CODE_ENUM_NS_START_
  template<> struct is_error_code_enum
      <websocketpp::extensions::error::value>
  {
      static const bool value = true;
  };
  _WEBSOCKETPP_ERROR_CODE_ENUM_NS_END_
  
  #endif // WEBSOCKETPP_EXTENSION_HPP