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1 // Copyright (c) 2010 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef BASE_NULLABLE_STRING16_H_ | 5 #ifndef BASE_STRINGS_NULLABLE_STRING16_H_ |
6 #define BASE_NULLABLE_STRING16_H_ | 6 #define BASE_STRINGS_NULLABLE_STRING16_H_ |
7 | 7 |
8 #include "base/strings/string16.h" | 8 #include "base/strings/string16.h" |
9 | 9 |
| 10 namespace base { |
| 11 |
10 // This class is a simple wrapper for string16 which also contains a null | 12 // 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 | 13 // state. This should be used only where the difference between null and |
12 // empty is meaningful. | 14 // empty is meaningful. |
13 class NullableString16 { | 15 class NullableString16 { |
14 public: | 16 public: |
15 NullableString16() : is_null_(false) { } | 17 NullableString16() : is_null_(false) { } |
16 explicit NullableString16(bool is_null) : is_null_(is_null) { } | 18 explicit NullableString16(bool is_null) : is_null_(is_null) { } |
17 NullableString16(const string16& string, bool is_null) | 19 NullableString16(const string16& string, bool is_null) |
18 : string_(string), is_null_(is_null) { | 20 : string_(string), is_null_(is_null) { |
19 } | 21 } |
20 | 22 |
21 const string16& string() const { return string_; } | 23 const string16& string() const { return string_; } |
22 bool is_null() const { return is_null_; } | 24 bool is_null() const { return is_null_; } |
23 | 25 |
24 private: | 26 private: |
25 string16 string_; | 27 string16 string_; |
26 bool is_null_; | 28 bool is_null_; |
27 }; | 29 }; |
28 | 30 |
29 #endif // BASE_NULLABLE_STRING16_H_ | 31 } // namespace |
| 32 |
| 33 // TODO(avi) update users of NullableString16 to use the namespace and remove |
| 34 // this "using". |
| 35 using base::NullableString16; |
| 36 |
| 37 #endif // BASE_STRINGS_NULLABLE_STRING16_H_ |
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