agv_ros_ws/space_lib/include/websocketpp/random/none.hpp

/*
 * 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_RANDOM_NONE_HPP
#define WEBSOCKETPP_RANDOM_NONE_HPP

namespace websocketpp {
/// Random number generation policies
namespace random {
/// Stub RNG policy that always returns 0
namespace none {

/// Thread safe stub "random" integer generator.
/**
 * This template class provides a random integer stub. The interface mimics the
 * WebSocket++ RNG generator classes but the generater function always returns
 * zero. This can be used to stub out the RNG for unit and performance testing.
 *
 * Call operator() to generate the next number
 */
template <typename int_type>
class int_generator {
    public:
        int_generator() {}

        /// advances the engine's state and returns the generated value
        int_type operator()() {
            return 0;
        }
};

} // namespace none
} // namespace random
} // namespace websocketpp

#endif //WEBSOCKETPP_RANDOM_NONE_HPP