message_operations.h

00001 /*
00002  * Copyright (C) 2010, Willow Garage, Inc.
00003  *
00004  * Redistribution and use in source and binary forms, with or without
00005  * modification, are permitted provided that the following conditions are met:
00006  *   * Redistributions of source code must retain the above copyright notice,
00007  *     this list of conditions and the following disclaimer.
00008  *   * Redistributions in binary form must reproduce the above copyright
00009  *     notice, this list of conditions and the following disclaimer in the
00010  *     documentation and/or other materials provided with the distribution.
00011  *   * Neither the names of Willow Garage, Inc. nor the names of its
00012  *     contributors may be used to endorse or promote products derived from
00013  *     this software without specific prior written permission.
00014  *
00015  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
00016  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
00017  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
00018  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
00019  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
00020  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
00021  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
00022  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
00023  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
00024  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
00025  * POSSIBILITY OF SUCH DAMAGE.
00026  */
00027 
00028 #ifndef ROSLIB_MESSAGE_OPERATIONS_H
00029 #define ROSLIB_MESSAGE_OPERATIONS_H
00030 
00031 #include <ostream>
00032 
00033 namespace ros
00034 {
00035 namespace message_operations
00036 {
00037 
00038 template<typename M>
00039 struct Printer
00040 {
00041   template<typename Stream>
00042   static void stream(Stream& s, const std::string& indent, const M& value)
00043   {
00044     (void)indent;
00045     s << value << "\n";
00046   }
00047 };
00048 
00049 // Explicitly specialize for uint8_t/int8_t because otherwise it thinks it's a char, and treats
00050 // the value as a character code
00051 template<>
00052 struct Printer<int8_t>
00053 {
00054   template<typename Stream>
00055   static void stream(Stream& s, const std::string& indent, int8_t value)
00056   {
00057     (void)indent;
00058     s << static_cast<int32_t>(value) << "\n";
00059   }
00060 };
00061 
00062 template<>
00063 struct Printer<uint8_t>
00064 {
00065   template<typename Stream>
00066   static void stream(Stream& s, const std::string& indent, uint8_t value)
00067   {
00068     (void)indent;
00069     s << static_cast<uint32_t>(value) << "\n";
00070   }
00071 };
00072 
00073 } // namespace message_operations
00074 } // namespace ros
00075 
00076 #endif // ROSLIB_MESSAGE_OPERATIONS_H