OLD | NEW |
1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 #ifndef RUNTIME_VM_BOOLFIELD_H_ | 5 #ifndef RUNTIME_VM_BOOLFIELD_H_ |
6 #define RUNTIME_VM_BOOLFIELD_H_ | 6 #define RUNTIME_VM_BOOLFIELD_H_ |
7 | 7 |
| 8 #include "platform/assert.h" |
8 #include "vm/globals.h" | 9 #include "vm/globals.h" |
9 | 10 |
10 namespace dart { | 11 namespace dart { |
11 | 12 |
12 // BoolField is a template for encoding and decoding a bit inside an | 13 // BoolField is a template for encoding and decoding a bit inside an |
13 // unsigned machine word. | 14 // unsigned machine word. |
14 template <int position> | 15 template <int position> |
15 class BoolField { | 16 class BoolField { |
16 public: | 17 public: |
17 // Returns a uword with the bool value encoded. | 18 // Returns a uword with the bool value encoded. |
(...skipping 14 matching lines...) Expand all Loading... |
32 static uword update(bool value, uword original) { | 33 static uword update(bool value, uword original) { |
33 ASSERT(position < sizeof(uword)); | 34 ASSERT(position < sizeof(uword)); |
34 const uword mask = 1U << position; | 35 const uword mask = 1U << position; |
35 return value ? original | mask : original & ~mask; | 36 return value ? original | mask : original & ~mask; |
36 } | 37 } |
37 }; | 38 }; |
38 | 39 |
39 } // namespace dart | 40 } // namespace dart |
40 | 41 |
41 #endif // RUNTIME_VM_BOOLFIELD_H_ | 42 #endif // RUNTIME_VM_BOOLFIELD_H_ |
OLD | NEW |