remoting/protocol/name_value_map.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4 //
   5 // Helper functions that allow to map enum values to strings.
   6
   7 #include <stddef.h>
   8
   9 #include "base/logging.h"
  10
  11 namespace remoting {
  12 namespace protocol {
  13
  14 template <typename T>
  15 struct NameMapElement {
  16   const T value;
  17   const char* const name;
  18 };
  19
  20 template <typename T, size_t N>
  21 const char* ValueToName(const NameMapElement<T> (&map)[N], T value) {
  22   for (size_t i = 0; i < N; ++i) {
  23     if (map[i].value == value)
  24       return map[i].name;
  25   }
  26   NOTREACHED();
  27   return nullptr;
  28 }
  29
  30 template <typename T, size_t N>
  31 bool NameToValue(const NameMapElement<T> (&map)[N],
  32                  const std::string& name,
  33                  T* result) {
  34   for (size_t i = 0; i < N; ++i) {
  35     if (map[i].name == name) {
  36       *result = map[i].value;
  37       return true;
  38     }
  39   }
  40   return false;
  41 }
  42
  43 }  // namespace protocol
  44 }  // namespace remoting