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| 1 /* |
| 2 * Copyright 2013 Google Inc. |
| 3 * |
| 4 * Use of this source code is governed by a BSD-style license that can be |
| 5 * found in the LICENSE file. |
| 6 */ |
| 7 |
| 8 /* |
| 9 * Error codes used by gmmain.cpp. |
| 10 */ |
| 11 |
| 12 namespace skiagm { |
| 13 |
| 14 /** |
| 15 * The complete list of error types we might encounter in GM. |
| 16 */ |
| 17 enum ErrorType { |
| 18 #if SK_SUPPORT_GPU |
| 19 kNoGpuContext_ErrorType, |
| 20 #endif |
| 21 kImageMismatch_ErrorType, |
| 22 kMissingExpectations_ErrorType, |
| 23 kWritingReferenceImage_ErrorType, |
| 24 kLast_ErrorType = kWritingReferenceImage_ErrorType |
| 25 }; |
| 26 |
| 27 /** |
| 28 * A combination of 0 or more ErrorTypes. |
| 29 */ |
| 30 class ErrorCombination { |
| 31 public: |
| 32 ErrorCombination() : fBitfield(0) {} |
| 33 ErrorCombination(const ErrorType type) : fBitfield(1 << type) {} |
| 34 |
| 35 /** |
| 36 * Returns true iff there are NO errors. |
| 37 */ |
| 38 bool isEmpty() const { |
| 39 return (0 == this->fBitfield); |
| 40 } |
| 41 |
| 42 /** |
| 43 * Adds this ErrorType to this ErrorCombination. |
| 44 */ |
| 45 void add(const ErrorType type) { |
| 46 this->fBitfield |= (1 << type); |
| 47 } |
| 48 |
| 49 /** |
| 50 * Adds all ErrorTypes in "other" to this ErrorCombination. |
| 51 */ |
| 52 void add(const ErrorCombination other) { |
| 53 this->fBitfield |= other.fBitfield; |
| 54 } |
| 55 |
| 56 /** |
| 57 * Returns true iff this ErrorCombination includes this ErrorType. |
| 58 */ |
| 59 bool includes(const ErrorType type) const { |
| 60 return !(0 == (this->fBitfield & (1 << type))); |
| 61 } |
| 62 |
| 63 /** |
| 64 * Returns a new ErrorCombination, which includes the union of all |
| 65 * ErrorTypes in two ErrorCombination objects (this and other). |
| 66 */ |
| 67 ErrorCombination plus(const ErrorCombination& other) const { |
| 68 ErrorCombination retval; |
| 69 retval.fBitfield = this->fBitfield | other.fBitfield; |
| 70 return retval; |
| 71 } |
| 72 |
| 73 /** |
| 74 * Returns a new ErrorCombination, which is a copy of "this" |
| 75 * but with all ErrorTypes in "other" removed. |
| 76 */ |
| 77 ErrorCombination minus(const ErrorCombination& other) const { |
| 78 ErrorCombination retval; |
| 79 retval.fBitfield = this->fBitfield & ~(other.fBitfield); |
| 80 return retval; |
| 81 } |
| 82 |
| 83 private: |
| 84 int fBitfield; |
| 85 }; |
| 86 |
| 87 // No errors at all. |
| 88 const static ErrorCombination kEmpty_ErrorCombination; |
| 89 } |
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