本文整理汇总了C++中Sema::IsQualificationConversion方法的典型用法代码示例。如果您正苦于以下问题：C++ Sema::IsQualificationConversion方法的具体用法？C++ Sema::IsQualificationConversion怎么用？C++ Sema::IsQualificationConversion使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类Sema的用法示例。
在下文中一共展示了Sema::IsQualificationConversion方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: CastsAwayConstness
/// CastsAwayConstness - Check if the pointer conversion from SrcType to
/// DestType casts away constness as defined in C++ 5.2.11p8ff. This is used by
/// the cast checkers. Both arguments must denote pointer (possibly to member)
/// types.
bool
CastsAwayConstness(Sema &Self, QualType SrcType, QualType DestType)
{
// Casting away constness is defined in C++ 5.2.11p8 with reference to
// C++ 4.4. We piggyback on Sema::IsQualificationConversion for this, since
// the rules are non-trivial. So first we construct Tcv *...cv* as described
// in C++ 5.2.11p8.
assert((SrcType->isPointerType() || SrcType->isMemberPointerType()) &&
"Source type is not pointer or pointer to member.");
assert((DestType->isPointerType() || DestType->isMemberPointerType()) &&
"Destination type is not pointer or pointer to member.");
QualType UnwrappedSrcType = SrcType, UnwrappedDestType = DestType;
llvm::SmallVector<unsigned, 8> cv1, cv2;
// Find the qualifications.
while (Self.UnwrapSimilarPointerTypes(UnwrappedSrcType, UnwrappedDestType)) {
cv1.push_back(UnwrappedSrcType.getCVRQualifiers());
cv2.push_back(UnwrappedDestType.getCVRQualifiers());
}
assert(cv1.size() > 0 && "Must have at least one pointer level.");
// Construct void pointers with those qualifiers (in reverse order of
// unwrapping, of course).
QualType SrcConstruct = Self.Context.VoidTy;
QualType DestConstruct = Self.Context.VoidTy;
for (llvm::SmallVector<unsigned, 8>::reverse_iterator i1 = cv1.rbegin(),
i2 = cv2.rbegin();
i1 != cv1.rend(); ++i1, ++i2)
{
SrcConstruct = Self.Context.getPointerType(
SrcConstruct.getQualifiedType(*i1));
DestConstruct = Self.Context.getPointerType(
DestConstruct.getQualifiedType(*i2));
}
// Test if they're compatible.
return SrcConstruct != DestConstruct &&
!Self.IsQualificationConversion(SrcConstruct, DestConstruct);
}