base/nullable_string16.h

   1 // Copyright (c) 2010 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 #ifndef BASE_NULLABLE_STRING16_H_
   6 #define BASE_NULLABLE_STRING16_H_
   7
   8 #include "base/string16.h"
   9
  10 // This class is a simple wrapper for string16 which also contains a null
  11 // state.  This should be used only where the difference between null and
  12 // empty is meaningful.
  13 class NullableString16 {
  14  public:
  15   NullableString16() : is_null_(false) { }
  16   explicit NullableString16(bool is_null) : is_null_(is_null) { }
  17   NullableString16(const string16& string, bool is_null)
  18       : string_(string), is_null_(is_null) {
  19   }
  20
  21   const string16& string() const { return string_; }
  22   bool is_null() const { return is_null_; }
  23
  24  private:
  25   string16 string_;
  26   bool is_null_;
  27 };
  28
  29 #endif  // BASE_NULLABLE_STRING16_H_