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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 // The main idea in Courgette is to do patching *under a tranformation*. The | 5 // The main idea in Courgette is to do patching *under a tranformation*. The |
6 // input is transformed into a new representation, patching occurs in the new | 6 // input is transformed into a new representation, patching occurs in the new |
7 // repesentation, and then the tranform is reversed to get the patched data. | 7 // repesentation, and then the tranform is reversed to get the patched data. |
8 // | 8 // |
9 // The idea is applied to pieces (or 'Elements') of the whole (or 'Ensemble'). | 9 // The idea is applied to pieces (or 'Elements') of the whole (or 'Ensemble'). |
10 // Each of the elements has to go through the same set of steps in lock-step, | 10 // Each of the elements has to go through the same set of steps in lock-step, |
11 // but there may be many different kinds of elements, which have different | 11 // but there may be many different kinds of elements, which have different |
12 // transformation. | 12 // transformation. |
13 // | 13 // |
14 // This file declares all the main types involved in creating and applying a | 14 // This file declares all the main types involved in creating and applying a |
15 // patch with this structure. | 15 // patch with this structure. |
16 | 16 |
17 #ifndef COURGETTE_ENSEMBLE_H_ | 17 #ifndef COURGETTE_ENSEMBLE_H_ |
18 #define COURGETTE_ENSEMBLE_H_ | 18 #define COURGETTE_ENSEMBLE_H_ |
19 | 19 |
| 20 #include <stddef.h> |
| 21 #include <stdint.h> |
| 22 |
| 23 #include <string> |
20 #include <vector> | 24 #include <vector> |
21 #include <string> | |
22 | 25 |
23 #include "base/basictypes.h" | 26 #include "base/macros.h" |
24 | |
25 #include "courgette/courgette.h" | 27 #include "courgette/courgette.h" |
26 #include "courgette/region.h" | 28 #include "courgette/region.h" |
27 #include "courgette/streams.h" | 29 #include "courgette/streams.h" |
28 | 30 |
29 namespace courgette { | 31 namespace courgette { |
30 | 32 |
31 // Forward declarations: | 33 // Forward declarations: |
32 class Ensemble; | 34 class Ensemble; |
33 | 35 |
34 // An Element is a region of an Ensemble with an identifyable kind. | 36 // An Element is a region of an Ensemble with an identifyable kind. |
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123 // transformed-element-1 | 125 // transformed-element-1 |
124 // transformed-element-2 | 126 // transformed-element-2 |
125 // ... | 127 // ... |
126 // stream 3: | 128 // stream 3: |
127 // correction: | 129 // correction: |
128 // base-file | 130 // base-file |
129 // element-1 | 131 // element-1 |
130 // element-2 | 132 // element-2 |
131 // ... | 133 // ... |
132 | 134 |
133 static const uint32 kMagic = 'C' | ('o' << 8) | ('u' << 16); | 135 static const uint32_t kMagic = 'C' | ('o' << 8) | ('u' << 16); |
134 | 136 |
135 static const uint32 kVersion = 20110216; | 137 static const uint32_t kVersion = 20110216; |
136 }; | 138 }; |
137 | 139 |
138 // For any transform you would implement both a TransformationPatcher and a | 140 // For any transform you would implement both a TransformationPatcher and a |
139 // TransformationPatchGenerator. | 141 // TransformationPatchGenerator. |
140 // | 142 // |
141 // TransformationPatcher is the interface which abstracts out the actual | 143 // TransformationPatcher is the interface which abstracts out the actual |
142 // transformation used on an Element. The patching itself happens outside the | 144 // transformation used on an Element. The patching itself happens outside the |
143 // actions of a TransformationPatcher. There are four steps. | 145 // actions of a TransformationPatcher. There are four steps. |
144 // | 146 // |
145 // The first step is an Init step. The parameters to the Init step identify the | 147 // The first step is an Init step. The parameters to the Init step identify the |
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239 SinkStream* reformed_element); | 241 SinkStream* reformed_element); |
240 | 242 |
241 protected: | 243 protected: |
242 Element* old_element_; | 244 Element* old_element_; |
243 Element* new_element_; | 245 Element* new_element_; |
244 TransformationPatcher* patcher_; | 246 TransformationPatcher* patcher_; |
245 }; | 247 }; |
246 | 248 |
247 } // namespace | 249 } // namespace |
248 #endif // COURGETTE_ENSEMBLE_H_ | 250 #endif // COURGETTE_ENSEMBLE_H_ |
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