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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 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 | 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 // This file specifies a recursive data storage class called Value intended for | 5 // This file specifies a recursive data storage class called Value intended for |
6 // storing settings and other persistable data. | 6 // storing settings and other persistable data. |
7 // | 7 // |
8 // A Value represents something that can be stored in JSON or passed to/from | 8 // A Value represents something that can be stored in JSON or passed to/from |
9 // JavaScript. As such, it is NOT a generalized variant type, since only the | 9 // JavaScript. As such, it is NOT a generalized variant type, since only the |
10 // types supported by JavaScript/JSON are supported. | 10 // types supported by JavaScript/JSON are supported. |
11 // | 11 // |
12 // IN PARTICULAR this means that there is no support for int64 or unsigned | 12 // IN PARTICULAR this means that there is no support for int64_t or unsigned |
13 // numbers. Writing JSON with such types would violate the spec. If you need | 13 // numbers. Writing JSON with such types would violate the spec. If you need |
14 // something like this, either use a double or make a string value containing | 14 // something like this, either use a double or make a string value containing |
15 // the number you want. | 15 // the number you want. |
16 | 16 |
17 #ifndef BASE_VALUES_H_ | 17 #ifndef BASE_VALUES_H_ |
18 #define BASE_VALUES_H_ | 18 #define BASE_VALUES_H_ |
19 | 19 |
20 #include <stddef.h> | 20 #include <stddef.h> |
| 21 #include <stdint.h> |
21 | 22 |
22 #include <iosfwd> | 23 #include <iosfwd> |
23 #include <map> | 24 #include <map> |
24 #include <string> | 25 #include <string> |
25 #include <utility> | 26 #include <utility> |
26 #include <vector> | 27 #include <vector> |
27 | 28 |
28 #include "base/base_export.h" | 29 #include "base/base_export.h" |
29 #include "base/basictypes.h" | |
30 #include "base/compiler_specific.h" | 30 #include "base/compiler_specific.h" |
| 31 #include "base/macros.h" |
31 #include "base/memory/scoped_ptr.h" | 32 #include "base/memory/scoped_ptr.h" |
32 #include "base/strings/string16.h" | 33 #include "base/strings/string16.h" |
33 #include "base/strings/string_piece.h" | 34 #include "base/strings/string_piece.h" |
34 | 35 |
35 namespace base { | 36 namespace base { |
36 | 37 |
37 class BinaryValue; | 38 class BinaryValue; |
38 class DictionaryValue; | 39 class DictionaryValue; |
39 class FundamentalValue; | 40 class FundamentalValue; |
40 class ListValue; | 41 class ListValue; |
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557 } | 558 } |
558 | 559 |
559 BASE_EXPORT inline std::ostream& operator<<(std::ostream& out, | 560 BASE_EXPORT inline std::ostream& operator<<(std::ostream& out, |
560 const ListValue& value) { | 561 const ListValue& value) { |
561 return out << static_cast<const Value&>(value); | 562 return out << static_cast<const Value&>(value); |
562 } | 563 } |
563 | 564 |
564 } // namespace base | 565 } // namespace base |
565 | 566 |
566 #endif // BASE_VALUES_H_ | 567 #endif // BASE_VALUES_H_ |
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