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/*
* Copyright 2013 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
/*
* Error codes used by gmmain.cpp.
*/
namespace skiagm {
/**
* The complete list of error types we might encounter in GM.
*/
enum ErrorType {
#if SK_SUPPORT_GPU
kNoGpuContext_ErrorType,
#endif
kImageMismatch_ErrorType,
kMissingExpectations_ErrorType,
kWritingReferenceImage_ErrorType,
kLast_ErrorType = kWritingReferenceImage_ErrorType
};
/**
* A combination of 0 or more ErrorTypes.
*/
class ErrorCombination {
public:
ErrorCombination() : fBitfield(0) {}
ErrorCombination(const ErrorType type) : fBitfield(1 << type) {}
/**
* Returns true iff there are NO errors.
*/
bool isEmpty() const {
return (0 == this->fBitfield);
}
/**
* Adds this ErrorType to this ErrorCombination.
*/
void add(const ErrorType type) {
this->fBitfield |= (1 << type);
}
/**
* Adds all ErrorTypes in "other" to this ErrorCombination.
*/
void add(const ErrorCombination other) {
this->fBitfield |= other.fBitfield;
}
/**
* Returns true iff this ErrorCombination includes this ErrorType.
*/
bool includes(const ErrorType type) const {
return !(0 == (this->fBitfield & (1 << type)));
}
/**
* Returns a new ErrorCombination, which includes the union of all
* ErrorTypes in two ErrorCombination objects (this and other).
*/
ErrorCombination plus(const ErrorCombination& other) const {
ErrorCombination retval;
retval.fBitfield = this->fBitfield | other.fBitfield;
return retval;
}
/**
* Returns a new ErrorCombination, which is a copy of "this"
* but with all ErrorTypes in "other" removed.
*/
ErrorCombination minus(const ErrorCombination& other) const {
ErrorCombination retval;
retval.fBitfield = this->fBitfield & ~(other.fBitfield);
return retval;
}
private:
int fBitfield;
};
// No errors at all.
const static ErrorCombination kEmpty_ErrorCombination;
}
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