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#pragma once
8
9#include "base/string16.h"
10
11// This class is a simple wrapper for string16 which also contains a null
12// state.  This should be used only where the difference between null and
13// empty is meaningful.
14class NullableString16 {
15 public:
16  NullableString16() : is_null_(false) { }
17  explicit NullableString16(bool is_null) : is_null_(is_null) { }
18  NullableString16(const string16& string, bool is_null)
19      : string_(string), is_null_(is_null) {
20  }
21
22  const string16& string() const { return string_; }
23  bool is_null() const { return is_null_; }
24
25 private:
26  string16 string_;
27  bool is_null_;
28};
29
30#endif  // BASE_NULLABLE_STRING16_H_
31