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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2011 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_WIN_SCOPED_VARIANT_H_ | 5 #ifndef BASE_WIN_SCOPED_VARIANT_H_ |
6 #define BASE_WIN_SCOPED_VARIANT_H_ | 6 #define BASE_WIN_SCOPED_VARIANT_H_ |
7 | 7 |
8 #include <windows.h> | 8 #include <windows.h> |
9 #include <oleauto.h> | 9 #include <oleauto.h> |
| 10 #include <stdint.h> |
10 | 11 |
11 #include "base/base_export.h" | 12 #include "base/base_export.h" |
12 #include "base/basictypes.h" | 13 #include "base/macros.h" |
13 | 14 |
14 namespace base { | 15 namespace base { |
15 namespace win { | 16 namespace win { |
16 | 17 |
17 // Scoped VARIANT class for automatically freeing a COM VARIANT at the | 18 // Scoped VARIANT class for automatically freeing a COM VARIANT at the |
18 // end of a scope. Additionally provides a few functions to make the | 19 // end of a scope. Additionally provides a few functions to make the |
19 // encapsulated VARIANT easier to use. | 20 // encapsulated VARIANT easier to use. |
20 // Instead of inheriting from VARIANT, we take the containment approach | 21 // Instead of inheriting from VARIANT, we take the containment approach |
21 // in order to have more control over the usage of the variant and guard | 22 // in order to have more control over the usage of the variant and guard |
22 // against memory leaks. | 23 // against memory leaks. |
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83 | 84 |
84 // Retrieves the pointer address. | 85 // Retrieves the pointer address. |
85 // Used to receive a VARIANT as an out argument (and take ownership). | 86 // Used to receive a VARIANT as an out argument (and take ownership). |
86 // The function DCHECKs on the current value being empty/null. | 87 // The function DCHECKs on the current value being empty/null. |
87 // Usage: GetVariant(var.receive()); | 88 // Usage: GetVariant(var.receive()); |
88 VARIANT* Receive(); | 89 VARIANT* Receive(); |
89 | 90 |
90 void Set(const wchar_t* str); | 91 void Set(const wchar_t* str); |
91 | 92 |
92 // Setters for simple types. | 93 // Setters for simple types. |
93 void Set(int8 i8); | 94 void Set(int8_t i8); |
94 void Set(uint8 ui8); | 95 void Set(uint8_t ui8); |
95 void Set(int16 i16); | 96 void Set(int16_t i16); |
96 void Set(uint16 ui16); | 97 void Set(uint16_t ui16); |
97 void Set(int32 i32); | 98 void Set(int32_t i32); |
98 void Set(uint32 ui32); | 99 void Set(uint32_t ui32); |
99 void Set(int64 i64); | 100 void Set(int64_t i64); |
100 void Set(uint64 ui64); | 101 void Set(uint64_t ui64); |
101 void Set(float r32); | 102 void Set(float r32); |
102 void Set(double r64); | 103 void Set(double r64); |
103 void Set(bool b); | 104 void Set(bool b); |
104 | 105 |
105 // Creates a copy of |var| and assigns as this instance's value. | 106 // Creates a copy of |var| and assigns as this instance's value. |
106 // Note that this is different from the Reset() method that's used to | 107 // Note that this is different from the Reset() method that's used to |
107 // free the current value and assume ownership. | 108 // free the current value and assume ownership. |
108 void Set(const VARIANT& var); | 109 void Set(const VARIANT& var); |
109 | 110 |
110 // COM object setters | 111 // COM object setters |
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155 // Use the Compare method instead. | 156 // Use the Compare method instead. |
156 bool operator==(const ScopedVariant& var) const; | 157 bool operator==(const ScopedVariant& var) const; |
157 bool operator!=(const ScopedVariant& var) const; | 158 bool operator!=(const ScopedVariant& var) const; |
158 DISALLOW_COPY_AND_ASSIGN(ScopedVariant); | 159 DISALLOW_COPY_AND_ASSIGN(ScopedVariant); |
159 }; | 160 }; |
160 | 161 |
161 } // namespace win | 162 } // namespace win |
162 } // namespace base | 163 } // namespace base |
163 | 164 |
164 #endif // BASE_WIN_SCOPED_VARIANT_H_ | 165 #endif // BASE_WIN_SCOPED_VARIANT_H_ |
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