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simplify the logic in ASTContext::objcTypesAreCompatible 

llvm-svn: 49302
This commit is contained in:
Chris Lattner 2008-04-07 01:30:37 +00:00
parent ba5862e74c
commit f8c3e82897
1 changed files with 14 additions and 14 deletions
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28
clang/lib/AST/ASTContext.cpp
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@ -1422,23 +1422,23 @@ bool ASTContext::builtinTypesAreCompatible(QualType lhs, QualType rhs) {
/// are of different class; one is interface type or is
/// a qualified interface type and the other type is of a different class.
/// Example, II or II<P>.
bool ASTContext::objcTypesAreCompatible(QualType lhs, QualType rhs) {
if (lhs->isObjCInterfaceType() && isObjCIdType(rhs))
bool ASTContext::objcTypesAreCompatible(QualType LHS, QualType RHS) {
// ID is compatible with all interface types.
if (LHS->isObjCInterfaceType() && isObjCIdType(RHS))
return true;
else if (isObjCIdType(lhs) && rhs->isObjCInterfaceType())
else if (isObjCIdType(LHS) && RHS->isObjCInterfaceType())
return true;
if (const ObjCInterfaceType *lhsIT = lhs->getAsObjCInterfaceType()) {
const ObjCQualifiedInterfaceType *rhsQI =
rhs->getAsObjCQualifiedInterfaceType();
if (!isa<ObjCQualifiedInterfaceType>(lhsIT))
return rhsQI && (lhsIT->getDecl() == rhsQI->getDecl());
}
if (const ObjCInterfaceType *rhsIT = rhs->getAsObjCInterfaceType()) {
const ObjCQualifiedInterfaceType *lhsQI =
lhs->getAsObjCQualifiedInterfaceType();
if (!isa<ObjCQualifiedInterfaceType>(rhsIT))
return lhsQI && (rhsIT->getDecl() == lhsQI->getDecl());
// II is compatible with II<P> if the base is the same. Otherwise, no two
// qualified interface types are the same.
if (const ObjCInterfaceType *LHSIT = LHS->getAsObjCInterfaceType()) {
if (const ObjCInterfaceType *RHSIT = RHS->getAsObjCInterfaceType()) {
// If the base decls match and one is a qualified interface and one isn't,
// then they are compatible.
return LHSIT->getDecl() == RHSIT->getDecl() &&
isa<ObjCQualifiedInterfaceType>(LHSIT) !=
isa<ObjCQualifiedInterfaceType>(RHSIT);
}
}
return false;
}