| OLD | NEW |
| 1 | |
| 2 /* | 1 /* |
| 3 * Copyright 2010 Google Inc. | 2 * Copyright 2010 Google Inc. |
| 4 * | 3 * |
| 5 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
| 6 * found in the LICENSE file. | 5 * found in the LICENSE file. |
| 7 */ | 6 */ |
| 8 | 7 |
| 9 | |
| 10 #ifndef GrTemplates_DEFINED | 8 #ifndef GrTemplates_DEFINED |
| 11 #define GrTemplates_DEFINED | 9 #define GrTemplates_DEFINED |
| 12 | 10 |
| 13 #include "GrNoncopyable.h" | 11 #include "SkTypes.h" |
| 14 | 12 |
| 15 /** | 13 /** |
| 16 * Use to cast a ptr to a different type, and maintain strict-aliasing | 14 * Use to cast a ptr to a different type, and maintain strict-aliasing |
| 17 */ | 15 */ |
| 18 template <typename Dst, typename Src> Dst GrTCast(Src src) { | 16 template <typename Dst, typename Src> Dst GrTCast(Src src) { |
| 19 union { | 17 union { |
| 20 Src src; | 18 Src src; |
| 21 Dst dst; | 19 Dst dst; |
| 22 } data; | 20 } data; |
| 23 data.src = src; | 21 data.src = src; |
| 24 return data.dst; | 22 return data.dst; |
| 25 } | 23 } |
| 26 | 24 |
| 27 /** | 25 /** |
| 28 * takes a T*, saves the value it points to, in and restores the value in the | 26 * takes a T*, saves the value it points to, in and restores the value in the |
| 29 * destructor | 27 * destructor |
| 30 * e.g.: | 28 * e.g.: |
| 31 * { | 29 * { |
| 32 * GrAutoTRestore<int*> autoCountRestore; | 30 * GrAutoTRestore<int*> autoCountRestore; |
| 33 * if (useExtra) { | 31 * if (useExtra) { |
| 34 * autoCountRestore.reset(&fCount); | 32 * autoCountRestore.reset(&fCount); |
| 35 * fCount += fExtraCount; | 33 * fCount += fExtraCount; |
| 36 * } | 34 * } |
| 37 * ... | 35 * ... |
| 38 * } // fCount is restored | 36 * } // fCount is restored |
| 39 */ | 37 */ |
| 40 template <typename T> class GrAutoTRestore : public GrNoncopyable { | 38 template <typename T> class GrAutoTRestore : public SkNoncopyable { |
| 41 public: | 39 public: |
| 42 GrAutoTRestore() : fPtr(NULL), fVal() {} | 40 GrAutoTRestore() : fPtr(NULL), fVal() {} |
| 43 | 41 |
| 44 GrAutoTRestore(T* ptr) { | 42 GrAutoTRestore(T* ptr) { |
| 45 fPtr = ptr; | 43 fPtr = ptr; |
| 46 if (NULL != ptr) { | 44 if (NULL != ptr) { |
| 47 fVal = *ptr; | 45 fVal = *ptr; |
| 48 } | 46 } |
| 49 } | 47 } |
| 50 | 48 |
| (...skipping 10 matching lines...) Expand all Loading... |
| 61 } | 59 } |
| 62 fPtr = ptr; | 60 fPtr = ptr; |
| 63 fVal = *ptr; | 61 fVal = *ptr; |
| 64 } | 62 } |
| 65 private: | 63 private: |
| 66 T* fPtr; | 64 T* fPtr; |
| 67 T fVal; | 65 T fVal; |
| 68 }; | 66 }; |
| 69 | 67 |
| 70 #endif | 68 #endif |
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