src/FLARM/FlarmId.hpp

   1 /*
   2 Copyright_License {
   3
   4   XCSoar Glide Computer - http://www.xcsoar.org/
   5   Copyright (C) 2000-2013 The XCSoar Project
   6   A detailed list of copyright holders can be found in the file "AUTHORS".
   7
   8   This program is free software; you can redistribute it and/or
   9   modify it under the terms of the GNU General Public License
  10   as published by the Free Software Foundation; either version 2
  11   of the License, or (at your option) any later version.
  12
  13   This program is distributed in the hope that it will be useful,
  14   but WITHOUT ANY WARRANTY; without even the implied warranty of
  15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16   GNU General Public License for more details.
  17
  18   You should have received a copy of the GNU General Public License
  19   along with this program; if not, write to the Free Software
  20   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  21 }
  22 */
  23
  24 #ifndef XCSOAR_FLARM_ID_HPP
  25 #define XCSOAR_FLARM_ID_HPP
  26
  27 #include "Compiler.h"
  28
  29 #include <stdint.h>
  30 #include <tchar.h>
  31
  32 /**
  33  * The identification number of a FLARM traffic.
  34  */
  35 class FlarmId {
  36   static constexpr uint32_t UNDEFINED_VALUE = 0;
  37
  38   uint32_t value;
  39
  40   constexpr
  41   FlarmId(uint32_t _value):value(_value) {}
  42
  43 public:
  44   FlarmId() = default;
  45
  46   constexpr
  47   static FlarmId Undefined() {
  48     return FlarmId(UNDEFINED_VALUE);
  49   }
  50
  51   bool IsDefined() const {
  52     return value != UNDEFINED_VALUE;
  53   }
  54
  55   void Clear() {
  56     value = UNDEFINED_VALUE;
  57   }
  58
  59   bool operator==(FlarmId other) const {
  60     return value == other.value;
  61   }
  62
  63   bool operator<(FlarmId other) const {
  64     return value < other.value;
  65   }
  66
  67   static FlarmId Parse(const char *input, char **endptr_r);
  68 #ifdef _UNICODE
  69   static FlarmId Parse(const TCHAR *input, TCHAR **endptr_r);
  70 #endif
  71
  72   const TCHAR *Format(TCHAR *buffer) const;
  73 };
  74
  75 #endif