nullable_string16.h revision c7f5f8508d98d5952d42ed7648c2a8f30a4da156 
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.
13class 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_
30