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This patch includes a conceptually simple, but very intrusive/pervasive change. 

The idea is to segregate Objective-C "object" pointers from general C pointers (utilizing the recently added ObjCObjectPointerType). The fun starts in Sema::GetTypeForDeclarator(), where "SomeInterface *" is now represented by a single AST node (rather than a PointerType whose Pointee is an ObjCInterfaceType). Since a significant amount of code assumed ObjC object pointers where based on C pointers/structs, this patch is very tedious. It should also explain why it is hard to accomplish this in smaller, self-contained patches.

This patch does most of the "heavy lifting" related to moving from PointerType->ObjCObjectPointerType. It doesn't include all potential "cleanups". The good news is additional cleanups can be done later (some are noted in the code). This patch is so large that I didn't want to include any changes that are purely aesthetic.

By making the ObjC types truly built-in, they are much easier to work with (and require fewer "hacks"). For example, there is no need for ASTContext::isObjCIdStructType() or ASTContext::isObjCClassStructType()! We believe this change (and the follow-up cleanups) will pay dividends over time. 

Given the amount of code change, I do expect some fallout from this change (though it does pass all of the clang tests). If you notice any problems, please let us know asap! Thanks.

llvm-svn: 75314
This commit is contained in:
Steve Naroff 2009-07-10 23:34:53 +00:00
parent 1297799096
commit 7cae42b07a
43 changed files with 894 additions and 757 deletions
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18
clang/include/clang/AST/ASTContext.h
View File

@ -107,7 +107,6 @@ class ASTContext {
/// ObjCIdType - a pseudo built-in typedef type (set by Sema).
QualType ObjCIdType;
const RecordType *IdStructType;
/// ObjCSelType - another pseudo built-in typedef type (set by Sema).
QualType ObjCSelType;
@ -119,7 +118,6 @@ class ASTContext {
/// ObjCClassType - another pseudo built-in typedef type (set by Sema).
QualType ObjCClassType;
const RecordType *ClassStructType;
QualType ObjCConstantStringType;
RecordDecl *CFConstantStringTypeDecl;
@ -375,7 +373,7 @@ public:
/// getObjCObjectPointerType - Return a ObjCObjectPointerType type for the
/// given interface decl and the conforming protocol list.
QualType getObjCObjectPointerType(ObjCInterfaceDecl *Decl,
QualType getObjCObjectPointerType(QualType OIT = QualType(),
ObjCProtocolDecl **ProtocolList = 0,
unsigned NumProtocols = 0);
@ -770,26 +768,18 @@ public:
bool isObjCIdType(QualType T) const {
return T == ObjCIdType;
}
bool isObjCIdStructType(QualType T) const {
if (!IdStructType) // ObjC isn't enabled
return false;
return T->getAsStructureType() == IdStructType;
}
bool isObjCClassType(QualType T) const {
return T == ObjCClassType;
}
bool isObjCClassStructType(QualType T) const {
if (!ClassStructType) // ObjC isn't enabled
return false;
return T->getAsStructureType() == ClassStructType;
}
bool isObjCSelType(QualType T) const {
assert(SelStructType && "isObjCSelType used before 'SEL' type is built");
return T->getAsStructureType() == SelStructType;
}
// Check the safety of assignment from LHS to RHS
bool canAssignObjCInterfaces(const ObjCInterfaceType *LHS,
bool canAssignObjCInterfaces(const ObjCObjectPointerType *LHSOPT,
const ObjCObjectPointerType *RHSOPT);
bool canAssignObjCInterfaces(const ObjCInterfaceType *LHS,
const ObjCInterfaceType *RHS);
bool areComparableObjCPointerTypes(QualType LHS, QualType RHS);

159
clang/include/clang/AST/Type.h
View File

@ -396,9 +396,13 @@ public:
bool isVectorType() const; // GCC vector type.
bool isExtVectorType() const; // Extended vector type.
bool isObjCObjectPointerType() const; // Pointer to *any* ObjC object.
// FIXME: change this to 'raw' interface type, so we can used 'interface' type
// for the common case.
bool isObjCInterfaceType() const; // NSString or NSString<foo>
bool isObjCQualifiedInterfaceType() const; // NSString<foo>
bool isObjCQualifiedIdType() const; // id<foo>
bool isObjCIdType() const; // id
bool isObjCClassType() const; // Class
bool isTemplateTypeParmType() const; // C++ template type parameter
bool isNullPtrType() const; // C++0x nullptr_t
@ -443,9 +447,12 @@ public:
const ComplexType *getAsComplexIntegerType() const; // GCC complex int type.
const ExtVectorType *getAsExtVectorType() const; // Extended vector type.
const ObjCObjectPointerType *getAsObjCObjectPointerType() const;
// The following is a convenience method that returns an ObjCObjectPointerType
// for object declared using an interface.
const ObjCObjectPointerType *getAsObjCInterfacePointerType() const;
const ObjCObjectPointerType *getAsObjCQualifiedIdType() const;
const ObjCInterfaceType *getAsObjCInterfaceType() const;
const ObjCQualifiedInterfaceType *getAsObjCQualifiedInterfaceType() const;
const ObjCObjectPointerType *getAsObjCQualifiedIdType() const;
const TemplateTypeParmType *getAsTemplateTypeParmType() const;
const TemplateSpecializationType *
@ -460,6 +467,10 @@ public:
/// This method should never be used when type qualifiers are meaningful.
const Type *getArrayElementTypeNoTypeQual() const;
/// getPointeeType - If this is a pointer or ObjC object pointer, this
/// returns the respective pointee.
QualType getPointeeType() const;
/// getDesugaredType - Return the specified type with any "sugar" removed from
/// the type. This takes off typedefs, typeof's etc. If the outer level of
/// the type is already concrete, it returns it unmodified. This is similar
@ -1809,53 +1820,6 @@ public:
static bool classof(const TypenameType *T) { return true; }
};
/// ObjCObjectPointerType - Used to represent 'id', 'Interface *', 'id <p>',
/// and 'Interface <p> *'.
///
/// Duplicate protocols are removed and protocol list is canonicalized to be in
/// alphabetical order.
class ObjCObjectPointerType : public Type, public llvm::FoldingSetNode {
ObjCInterfaceDecl *Decl;
// List of protocols for this protocol conforming object type
// List is sorted on protocol name. No protocol is entered more than once.
llvm::SmallVector<ObjCProtocolDecl*, 8> Protocols;
ObjCObjectPointerType(ObjCInterfaceDecl *D,
ObjCProtocolDecl **Protos, unsigned NumP) :
Type(ObjCObjectPointer, QualType(), /*Dependent=*/false),
Decl(D), Protocols(Protos, Protos+NumP) { }
friend class ASTContext; // ASTContext creates these.
public:
ObjCInterfaceDecl *getDecl() const { return Decl; }
/// isObjCQualifiedIdType - true for "id <p>".
bool isObjCQualifiedIdType() const { return Decl == 0 && Protocols.size(); }
/// qual_iterator and friends: this provides access to the (potentially empty)
/// list of protocols qualifying this interface.
typedef llvm::SmallVector<ObjCProtocolDecl*, 8>::const_iterator qual_iterator;
qual_iterator qual_begin() const { return Protocols.begin(); }
qual_iterator qual_end() const { return Protocols.end(); }
bool qual_empty() const { return Protocols.size() == 0; }
/// getNumProtocols - Return the number of qualifying protocols in this
/// interface type, or 0 if there are none.
unsigned getNumProtocols() const { return Protocols.size(); }
void Profile(llvm::FoldingSetNodeID &ID);
static void Profile(llvm::FoldingSetNodeID &ID,
const ObjCInterfaceDecl *Decl,
ObjCProtocolDecl **protocols, unsigned NumProtocols);
virtual void getAsStringInternal(std::string &InnerString,
const PrintingPolicy &Policy) const;
static bool classof(const Type *T) {
return T->getTypeClass() == ObjCObjectPointer;
}
static bool classof(const ObjCObjectPointerType *) { return true; }
};
/// ObjCInterfaceType - Interfaces are the core concept in Objective-C for
/// object oriented design. They basically correspond to C++ classes. There
/// are two kinds of interface types, normal interfaces like "NSString" and
@ -1868,10 +1832,15 @@ protected:
ObjCInterfaceType(TypeClass tc, ObjCInterfaceDecl *D) :
Type(tc, QualType(), /*Dependent=*/false), Decl(D) { }
friend class ASTContext; // ASTContext creates these.
// FIXME: These can go away when we move ASTContext::canAssignObjCInterfaces
// to this class (as a static helper).
bool isObjCIdInterface() const;
bool isObjCClassInterface() const;
public:
ObjCInterfaceDecl *getDecl() const { return Decl; }
/// qual_iterator and friends: this provides access to the (potentially empty)
/// list of protocols qualifying this interface. If this is an instance of
/// ObjCQualifiedInterfaceType it returns the list, otherwise it returns an
@ -1893,11 +1862,85 @@ public:
static bool classof(const ObjCInterfaceType *) { return true; }
};
/// ObjCObjectPointerType - Used to represent 'id', 'Interface *', 'id <p>',
/// and 'Interface <p> *'.
///
/// Duplicate protocols are removed and protocol list is canonicalized to be in
/// alphabetical order.
class ObjCObjectPointerType : public Type, public llvm::FoldingSetNode {
QualType PointeeType; // will always point to an interface type.
// List of protocols for this protocol conforming object type
// List is sorted on protocol name. No protocol is entered more than once.
llvm::SmallVector<ObjCProtocolDecl*, 8> Protocols;
ObjCObjectPointerType(QualType T, ObjCProtocolDecl **Protos, unsigned NumP) :
Type(ObjCObjectPointer, QualType(), /*Dependent=*/false),
PointeeType(T), Protocols(Protos, Protos+NumP) { }
friend class ASTContext; // ASTContext creates these.
friend class ObjCInterfaceType; // To enable 'id' and 'Class' predicates.
static ObjCInterfaceType *IdInterfaceT;
static ObjCInterfaceType *ClassInterfaceT;
static void setIdInterface(QualType T) {
IdInterfaceT = dyn_cast<ObjCInterfaceType>(T.getTypePtr());
}
static void setClassInterface(QualType T) {
ClassInterfaceT = dyn_cast<ObjCInterfaceType>(T.getTypePtr());
}
static ObjCInterfaceType *getIdInterface() { return IdInterfaceT; }
static ObjCInterfaceType *getClassInterface() { return ClassInterfaceT; }
public:
// Get the pointee type. Pointee is required to always be an interface type.
// Note: Pointee can be a TypedefType whose canonical type is an interface.
// Example: typedef NSObject T; T *var;
QualType getPointeeType() const { return PointeeType; }
const ObjCInterfaceType *getInterfaceType() const {
return PointeeType->getAsObjCInterfaceType();
}
ObjCInterfaceDecl *getInterfaceDecl() const {
return getInterfaceType()->getDecl();
}
/// isObjCQualifiedIdType - true for "id <p>".
bool isObjCQualifiedIdType() const {
return getInterfaceType() == IdInterfaceT && Protocols.size();
}
bool isObjCIdType() const {
return getInterfaceType() == IdInterfaceT && !Protocols.size();
}
bool isObjCClassType() const {
return getInterfaceType() == ClassInterfaceT && !Protocols.size();
}
/// qual_iterator and friends: this provides access to the (potentially empty)
/// list of protocols qualifying this interface.
typedef llvm::SmallVector<ObjCProtocolDecl*, 8>::const_iterator qual_iterator;
qual_iterator qual_begin() const { return Protocols.begin(); }
qual_iterator qual_end() const { return Protocols.end(); }
bool qual_empty() const { return Protocols.size() == 0; }
/// getNumProtocols - Return the number of qualifying protocols in this
/// interface type, or 0 if there are none.
unsigned getNumProtocols() const { return Protocols.size(); }
void Profile(llvm::FoldingSetNodeID &ID);
static void Profile(llvm::FoldingSetNodeID &ID, QualType T,
ObjCProtocolDecl **protocols, unsigned NumProtocols);
virtual void getAsStringInternal(std::string &InnerString,
const PrintingPolicy &Policy) const;
static bool classof(const Type *T) {
return T->getTypeClass() == ObjCObjectPointer;
}
static bool classof(const ObjCObjectPointerType *) { return true; }
};
/// ObjCQualifiedInterfaceType - This class represents interface types
/// conforming to a list of protocols, such as INTF<Proto1, Proto2, Proto1>.
///
/// Duplicate protocols are removed and protocol list is canonicalized to be in
/// alphabetical order.
/// FIXME: Remove this class (converting uses to ObjCObjectPointerType).
class ObjCQualifiedInterfaceType : public ObjCInterfaceType,
public llvm::FoldingSetNode {
@ -1983,7 +2026,7 @@ inline QualType::GCAttrTypes QualType::getObjCGCAttr() const {
return AT->getElementType().getObjCGCAttr();
if (const ExtQualType *EXTQT = dyn_cast<ExtQualType>(CT))
return EXTQT->getObjCGCAttr();
if (const PointerType *PT = CT->getAsPointerType())
if (const ObjCObjectPointerType *PT = CT->getAsObjCObjectPointerType())
return PT->getPointeeType().getObjCGCAttr();
return GCNone;
}
@ -2115,6 +2158,18 @@ inline bool Type::isObjCQualifiedIdType() const {
}
return false;
}
inline bool Type::isObjCIdType() const {
if (const ObjCObjectPointerType *OPT = getAsObjCObjectPointerType()) {
return OPT->isObjCIdType();
}
return false;
}
inline bool Type::isObjCClassType() const {
if (const ObjCObjectPointerType *OPT = getAsObjCObjectPointerType()) {
return OPT->isObjCClassType();
}
return false;
}
inline bool Type::isTemplateTypeParmType() const {
return isa<TemplateTypeParmType>(CanonicalType.getUnqualifiedType());
}
@ -2134,12 +2189,12 @@ inline bool Type::isOverloadableType() const {
inline bool Type::hasPointerRepresentation() const {
return (isPointerType() || isReferenceType() || isBlockPointerType() ||
isObjCInterfaceType() || isObjCQualifiedIdType() ||
isObjCInterfaceType() || isObjCObjectPointerType() ||
isObjCQualifiedInterfaceType() || isNullPtrType());
}
inline bool Type::hasObjCPointerRepresentation() const {
return (isObjCInterfaceType() || isObjCQualifiedIdType() ||
return (isObjCInterfaceType() || isObjCObjectPointerType() ||
isObjCQualifiedInterfaceType());
}

2
clang/include/clang/Analysis/PathSensitive/SVals.h
View File

@ -196,7 +196,7 @@ public:
}
static inline bool IsLocType(QualType T) {
return T->isPointerType() || T->isObjCQualifiedIdType()
return T->isPointerType() || T->isObjCObjectPointerType()
|| T->isBlockPointerType();
}
};

276
clang/lib/AST/ASTContext.cpp
View File

@ -42,8 +42,8 @@ ASTContext::ASTContext(const LangOptions& LOpts, SourceManager &SM,
Idents(idents), Selectors(sels),
BuiltinInfo(builtins), ExternalSource(0), PrintingPolicy(LOpts) {
if (size_reserve > 0) Types.reserve(size_reserve);
InitBuiltinTypes();
TUDecl = TranslationUnitDecl::Create(*this);
InitBuiltinTypes();
}
ASTContext::~ASTContext() {
@ -190,11 +190,10 @@ void ASTContext::InitBuiltinTypes() {
LongDoubleComplexTy = getComplexType(LongDoubleTy);
BuiltinVaListType = QualType();
ObjCIdType = QualType();
IdStructType = 0;
ObjCClassType = QualType();
ClassStructType = 0;
ObjCIdType = QualType();
ObjCClassType = QualType();
ObjCConstantStringType = QualType();
// void * type
@ -1071,7 +1070,7 @@ QualType ASTContext::getObjCGCQualType(QualType T,
if (T->isPointerType()) {
QualType Pointee = T->getAsPointerType()->getPointeeType();
if (Pointee->isPointerType()) {
if (Pointee->isPointerType() || Pointee->isObjCObjectPointerType()) {
QualType ResultType = getObjCGCQualType(Pointee, GCAttr);
return getPointerType(ResultType);
}
@ -1847,15 +1846,18 @@ static void SortAndUniqueProtocols(ObjCProtocolDecl **&Protocols,
/// getObjCObjectPointerType - Return a ObjCObjectPointerType type for
/// the given interface decl and the conforming protocol list.
QualType ASTContext::getObjCObjectPointerType(ObjCInterfaceDecl *Decl,
QualType ASTContext::getObjCObjectPointerType(QualType InterfaceT,
ObjCProtocolDecl **Protocols,
unsigned NumProtocols) {
if (InterfaceT.isNull())
InterfaceT = QualType(ObjCObjectPointerType::getIdInterface(), 0);
// Sort the protocol list alphabetically to canonicalize it.
if (NumProtocols)
SortAndUniqueProtocols(Protocols, NumProtocols);
llvm::FoldingSetNodeID ID;
ObjCObjectPointerType::Profile(ID, Decl, Protocols, NumProtocols);
ObjCObjectPointerType::Profile(ID, InterfaceT, Protocols, NumProtocols);
void *InsertPos = 0;
if (ObjCObjectPointerType *QT =
@ -1864,7 +1866,7 @@ QualType ASTContext::getObjCObjectPointerType(ObjCInterfaceDecl *Decl,
// No Match;
ObjCObjectPointerType *QType =
new (*this,8) ObjCObjectPointerType(Decl, Protocols, NumProtocols);
new (*this,8) ObjCObjectPointerType(InterfaceT, Protocols, NumProtocols);
Types.push_back(QType);
ObjCObjectPointerTypes.InsertNode(QType, InsertPos);
@ -2745,25 +2747,7 @@ void ASTContext::getObjCEncodingForTypeImpl(QualType T, std::string& S,
S += 'j';
getObjCEncodingForTypeImpl(CT->getElementType(), S, false, false, 0, false,
false);
} else if (T->isObjCQualifiedIdType()) {
getObjCEncodingForTypeImpl(getObjCIdType(), S,
ExpandPointedToStructures,
ExpandStructures, FD);
if (FD || EncodingProperty) {
// Note that we do extended encoding of protocol qualifer list
// Only when doing ivar or property encoding.
const ObjCObjectPointerType *QIDT = T->getAsObjCQualifiedIdType();
S += '"';
for (ObjCObjectPointerType::qual_iterator I = QIDT->qual_begin(),
E = QIDT->qual_end(); I != E; ++I) {
S += '<';
S += (*I)->getNameAsString();
S += '>';
}
S += '"';
}
return;
}
}
else if (const PointerType *PT = T->getAsPointerType()) {
QualType PointeeTy = PT->getPointeeType();
bool isReadOnly = false;
@ -2797,42 +2781,7 @@ void ASTContext::getObjCEncodingForTypeImpl(QualType T, std::string& S,
S.replace(S.end()-2, S.end(), replace);
}
}
if (isObjCIdStructType(PointeeTy)) {
S += '@';
return;
}
else if (PointeeTy->isObjCInterfaceType()) {
if (!EncodingProperty &&
isa<TypedefType>(PointeeTy.getTypePtr())) {
// Another historical/compatibility reason.
// We encode the underlying type which comes out as
// {...};
S += '^';
getObjCEncodingForTypeImpl(PointeeTy, S,
false, ExpandPointedToStructures,
NULL);
return;
}
S += '@';
if (FD || EncodingProperty) {
const ObjCInterfaceType *OIT =
PointeeTy.getUnqualifiedType()->getAsObjCInterfaceType();
ObjCInterfaceDecl *OI = OIT->getDecl();
S += '"';
S += OI->getNameAsCString();
for (ObjCInterfaceType::qual_iterator I = OIT->qual_begin(),
E = OIT->qual_end(); I != E; ++I) {
S += '<';
S += (*I)->getNameAsString();
S += '>';
}
S += '"';
}
return;
} else if (isObjCClassStructType(PointeeTy)) {
S += '#';
return;
} else if (isObjCSelType(PointeeTy)) {
if (isObjCSelType(PointeeTy)) {
S += ':';
return;
}
@ -2937,7 +2886,61 @@ void ASTContext::getObjCEncodingForTypeImpl(QualType T, std::string& S,
}
S += '}';
}
else
else if (const ObjCObjectPointerType *OPT = T->getAsObjCObjectPointerType()) {
if (OPT->isObjCIdType()) {
S += '@';
return;
} else if (OPT->isObjCClassType()) {
S += '#';
return;
} else if (OPT->isObjCQualifiedIdType()) {
getObjCEncodingForTypeImpl(getObjCIdType(), S,
ExpandPointedToStructures,
ExpandStructures, FD);
if (FD || EncodingProperty) {
// Note that we do extended encoding of protocol qualifer list
// Only when doing ivar or property encoding.
const ObjCObjectPointerType *QIDT = T->getAsObjCQualifiedIdType();
S += '"';
for (ObjCObjectPointerType::qual_iterator I = QIDT->qual_begin(),
E = QIDT->qual_end(); I != E; ++I) {
S += '<';
S += (*I)->getNameAsString();
S += '>';
}
S += '"';
}
return;
} else {
QualType PointeeTy = OPT->getPointeeType();
if (!EncodingProperty &&
isa<TypedefType>(PointeeTy.getTypePtr())) {
// Another historical/compatibility reason.
// We encode the underlying type which comes out as
// {...};
S += '^';
getObjCEncodingForTypeImpl(PointeeTy, S,
false, ExpandPointedToStructures,
NULL);
return;
}
S += '@';
if (FD || EncodingProperty) {
const ObjCInterfaceType *OIT = OPT->getInterfaceType();
ObjCInterfaceDecl *OI = OIT->getDecl();
S += '"';
S += OI->getNameAsCString();
for (ObjCInterfaceType::qual_iterator I = OIT->qual_begin(),
E = OIT->qual_end(); I != E; ++I) {
S += '<';
S += (*I)->getNameAsString();
S += '>';
}
S += '"';
}
return;
}
} else
assert(0 && "@encode for type not implemented!");
}
@ -2967,23 +2970,12 @@ void ASTContext::setBuiltinVaListType(QualType T)
void ASTContext::setObjCIdType(QualType T)
{
ObjCIdType = T;
const TypedefType *TT = T->getAsTypedefType();
if (!TT)
return;
TypedefDecl *TD = TT->getDecl();
// typedef struct objc_object *id;
const PointerType *ptr = TD->getUnderlyingType()->getAsPointerType();
// User error - caller will issue diagnostics.
if (!ptr)
return;
const RecordType *rec = ptr->getPointeeType()->getAsStructureType();
// User error - caller will issue diagnostics.
if (!rec)
return;
IdStructType = rec;
assert(TT && "missing 'id' typedef");
const ObjCObjectPointerType *OPT =
TT->getDecl()->getUnderlyingType()->getAsObjCObjectPointerType();
assert(OPT && "missing 'id' type");
ObjCObjectPointerType::setIdInterface(OPT->getPointeeType());
}
void ASTContext::setObjCSelType(QualType T)
@ -3013,18 +3005,12 @@ void ASTContext::setObjCProtoType(QualType QT)
void ASTContext::setObjCClassType(QualType T)
{
ObjCClassType = T;
const TypedefType *TT = T->getAsTypedefType();
if (!TT)
return;
TypedefDecl *TD = TT->getDecl();
// typedef struct objc_class *Class;
const PointerType *ptr = TD->getUnderlyingType()->getAsPointerType();
assert(ptr && "'Class' incorrectly typed");
const RecordType *rec = ptr->getPointeeType()->getAsStructureType();
assert(rec && "'Class' incorrectly typed");
ClassStructType = rec;
assert(TT && "missing 'Class' typedef");
const ObjCObjectPointerType *OPT =
TT->getDecl()->getUnderlyingType()->getAsObjCObjectPointerType();
assert(OPT && "missing 'Class' type");
ObjCObjectPointerType::setClassInterface(OPT->getPointeeType());
}
void ASTContext::setObjCConstantStringInterface(ObjCInterfaceDecl *Decl) {
@ -3123,6 +3109,8 @@ bool ASTContext::isObjCNSObjectType(QualType Ty) const {
/// to struct), Interface* (pointer to ObjCInterfaceType) and id<P> (qualified
/// ID type).
bool ASTContext::isObjCObjectPointerType(QualType Ty) const {
if (Ty->isObjCObjectPointerType())
return true;
if (Ty->isObjCQualifiedIdType())
return true;
@ -3198,8 +3186,30 @@ static bool areCompatVectorTypes(const VectorType *LHS,
/// compatible for assignment from RHS to LHS. This handles validation of any
/// protocol qualifiers on the LHS or RHS.
///
/// FIXME: Move the following to ObjCObjectPointerType/ObjCInterfaceType.
bool ASTContext::canAssignObjCInterfaces(const ObjCObjectPointerType *LHSOPT,
const ObjCObjectPointerType *RHSOPT) {
// If either interface represents the built-in 'id' or 'Class' types,
// then return true (no need to call canAssignObjCInterfaces()).
if (LHSOPT->isObjCIdType() || RHSOPT->isObjCIdType() ||
LHSOPT->isObjCClassType() || RHSOPT->isObjCClassType())
return true;
const ObjCInterfaceType* LHS = LHSOPT->getInterfaceType();
const ObjCInterfaceType* RHS = RHSOPT->getInterfaceType();
if (!LHS || !RHS)
return false;
return canAssignObjCInterfaces(LHS, RHS);
}
bool ASTContext::canAssignObjCInterfaces(const ObjCInterfaceType *LHS,
const ObjCInterfaceType *RHS) {
// If either interface represents the built-in 'id' or 'Class' types,
// then return true.
if (LHS->isObjCIdInterface() || RHS->isObjCIdInterface() ||
LHS->isObjCClassInterface() || RHS->isObjCClassInterface())
return true;
// Verify that the base decls are compatible: the RHS must be a subclass of
// the LHS.
if (!LHS->getDecl()->isSuperClassOf(RHS->getDecl()))
@ -3245,25 +3255,14 @@ bool ASTContext::canAssignObjCInterfaces(const ObjCInterfaceType *LHS,
bool ASTContext::areComparableObjCPointerTypes(QualType LHS, QualType RHS) {
// get the "pointed to" types
const PointerType *LHSPT = LHS->getAsPointerType();
const PointerType *RHSPT = RHS->getAsPointerType();
const ObjCObjectPointerType *LHSOPT = LHS->getAsObjCObjectPointerType();
const ObjCObjectPointerType *RHSOPT = RHS->getAsObjCObjectPointerType();
if (!LHSPT || !RHSPT)
if (!LHSOPT || !RHSOPT)
return false;
QualType lhptee = LHSPT->getPointeeType();
QualType rhptee = RHSPT->getPointeeType();
const ObjCInterfaceType* LHSIface = lhptee->getAsObjCInterfaceType();
const ObjCInterfaceType* RHSIface = rhptee->getAsObjCInterfaceType();
// ID acts sort of like void* for ObjC interfaces
if (LHSIface && isObjCIdStructType(rhptee))
return true;
if (RHSIface && isObjCIdStructType(lhptee))
return true;
if (!LHSIface || !RHSIface)
return false;
return canAssignObjCInterfaces(LHSIface, RHSIface) ||
canAssignObjCInterfaces(RHSIface, LHSIface);
return canAssignObjCInterfaces(LHSOPT, RHSOPT) ||
canAssignObjCInterfaces(RHSOPT, LHSOPT);
}
/// typesAreCompatible - C99 6.7.3p9: For two qualified types to be compatible,
@ -3406,8 +3405,7 @@ QualType ASTContext::mergeTypes(QualType LHS, QualType RHS) {
// issue error.
if ((GCAttr == QualType::Weak && GCLHSAttr != GCAttr) ||
(GCAttr == QualType::Strong && GCLHSAttr != GCAttr &&
LHSCan->isPointerType() && !isObjCObjectPointerType(LHSCan) &&
!isObjCIdStructType(LHSCan->getAsPointerType()->getPointeeType())))
!LHSCan->isObjCObjectPointerType()))
return QualType();
RHS = QualType(cast<ExtQualType>(RHS.getDesugaredType())->getBaseType(),
@ -3432,8 +3430,7 @@ QualType ASTContext::mergeTypes(QualType LHS, QualType RHS) {
// issue error.
if ((GCAttr == QualType::Weak && GCRHSAttr != GCAttr) ||
(GCAttr == QualType::Strong && GCRHSAttr != GCAttr &&
RHSCan->isPointerType() && !isObjCObjectPointerType(RHSCan) &&
!isObjCIdStructType(RHSCan->getAsPointerType()->getPointeeType())))
!RHSCan->isObjCObjectPointerType()))
return QualType();
LHS = QualType(cast<ExtQualType>(LHS.getDesugaredType())->getBaseType(),
@ -3460,47 +3457,12 @@ QualType ASTContext::mergeTypes(QualType LHS, QualType RHS) {
if (RHSClass == Type::ExtVector) RHSClass = Type::Vector;
// Consider qualified interfaces and interfaces the same.
// FIXME: Remove (ObjCObjectPointerType should obsolete this funny business).
if (LHSClass == Type::ObjCQualifiedInterface) LHSClass = Type::ObjCInterface;
if (RHSClass == Type::ObjCQualifiedInterface) RHSClass = Type::ObjCInterface;
// If the canonical type classes don't match.
if (LHSClass != RHSClass) {
const ObjCInterfaceType* LHSIface = LHS->getAsObjCInterfaceType();
const ObjCInterfaceType* RHSIface = RHS->getAsObjCInterfaceType();
// 'id' and 'Class' act sort of like void* for ObjC interfaces
if (LHSIface && (isObjCIdStructType(RHS) || isObjCClassStructType(RHS)))
return LHS;
if (RHSIface && (isObjCIdStructType(LHS) || isObjCClassStructType(LHS)))
return RHS;
// ID is compatible with all qualified id types.
if (LHS->isObjCQualifiedIdType()) {
if (const PointerType *PT = RHS->getAsPointerType()) {
QualType pType = PT->getPointeeType();
if (isObjCIdStructType(pType) || isObjCClassStructType(pType))
return LHS;
// FIXME: need to use ObjCQualifiedIdTypesAreCompatible(LHS, RHS, true).
// Unfortunately, this API is part of Sema (which we don't have access
// to. Need to refactor. The following check is insufficient, since we
// need to make sure the class implements the protocol.
if (pType->isObjCInterfaceType())
return LHS;
}
}
if (RHS->isObjCQualifiedIdType()) {
if (const PointerType *PT = LHS->getAsPointerType()) {
QualType pType = PT->getPointeeType();
if (isObjCIdStructType(pType) || isObjCClassStructType(pType))
return RHS;
// FIXME: need to use ObjCQualifiedIdTypesAreCompatible(LHS, RHS, true).
// Unfortunately, this API is part of Sema (which we don't have access
// to. Need to refactor. The following check is insufficient, since we
// need to make sure the class implements the protocol.
if (pType->isObjCInterfaceType())
return RHS;
}
}
// C99 6.7.2.2p4: Each enumerated type shall be compatible with char,
// a signed integer type, or an unsigned integer type.
if (const EnumType* ETy = LHS->getAsEnumType()) {
@ -3611,9 +3573,6 @@ QualType ASTContext::mergeTypes(QualType LHS, QualType RHS) {
return mergeFunctionTypes(LHS, RHS);
case Type::Record:
case Type::Enum:
// FIXME: Why are these compatible?
if (isObjCIdStructType(LHS) && isObjCClassStructType(RHS)) return LHS;
if (isObjCClassStructType(LHS) && isObjCIdStructType(RHS)) return LHS;
return QualType();
case Type::Builtin:
// Only exactly equal builtin types are compatible, which is tested above.
@ -3638,10 +3597,17 @@ QualType ASTContext::mergeTypes(QualType LHS, QualType RHS) {
return QualType();
}
case Type::ObjCObjectPointer:
// FIXME: finish
// Distinct qualified id's are not compatible.
case Type::ObjCObjectPointer: {
// FIXME: Incorporate tests from Sema::ObjCQualifiedIdTypesAreCompatible().
if (LHS->isObjCQualifiedIdType() && RHS->isObjCQualifiedIdType())
return QualType();
if (canAssignObjCInterfaces(LHS->getAsObjCObjectPointerType(),
RHS->getAsObjCObjectPointerType()))
return LHS;
return QualType();
}
case Type::FixedWidthInt:
// Distinct fixed-width integers are not compatible.
return QualType();

2
clang/lib/AST/DeclObjC.cpp
View File

@ -280,7 +280,7 @@ void ObjCMethodDecl::createImplicitParams(ASTContext &Context,
// of the interface (which has been reported). Recover gracefully.
if (OID) {
selfTy = Context.getObjCInterfaceType(OID);
selfTy = Context.getPointerType(selfTy);
selfTy = Context.getObjCObjectPointerType(selfTy);
} else {
selfTy = Context.getObjCIdType();
}

2
clang/lib/AST/Expr.cpp
View File

@ -1095,6 +1095,7 @@ bool Expr::isConstantInitializer(ASTContext &Ctx) const {
switch (getStmtClass()) {
default: break;
case StringLiteralClass:
case ObjCStringLiteralClass:
case ObjCEncodeExprClass:
return true;
case CompoundLiteralExprClass: {
@ -1136,7 +1137,6 @@ bool Expr::isConstantInitializer(ASTContext &Ctx) const {
return cast<CastExpr>(this)->getSubExpr()->isConstantInitializer(Ctx);
break;
}
return isEvaluatable(Ctx);
}

3
clang/lib/AST/ExprConstant.cpp
View File

@ -382,7 +382,8 @@ APValue PointerExprEvaluator::VisitCastExpr(const CastExpr* E) {
const Expr* SubExpr = E->getSubExpr();
// Check for pointer->pointer cast
if (SubExpr->getType()->isPointerType()) {
if (SubExpr->getType()->isPointerType() ||
SubExpr->getType()->isObjCObjectPointerType()) {
APValue Result;
if (EvaluatePointer(SubExpr, Result, Info))
return Result;

53
clang/lib/AST/Type.cpp
View File

@ -22,6 +22,9 @@
#include "llvm/Support/raw_ostream.h"
using namespace clang;
ObjCInterfaceType *ObjCObjectPointerType::IdInterfaceT;
ObjCInterfaceType *ObjCObjectPointerType::ClassInterfaceT;
bool QualType::isConstant(ASTContext &Ctx) const {
if (isConstQualified())
return true;
@ -295,6 +298,15 @@ const FunctionProtoType *Type::getAsFunctionProtoType() const {
return dyn_cast_or_null<FunctionProtoType>(getAsFunctionType());
}
QualType Type::getPointeeType() const {
if (const PointerType *PT = getAsPointerType())
return PT->getPointeeType();
if (const ObjCObjectPointerType *OPT = getAsObjCObjectPointerType())
return OPT->getPointeeType();
if (const BlockPointerType *BPT = getAsBlockPointerType())
return BPT->getPointeeType();
return QualType();
}
const PointerType *Type::getAsPointerType() const {
// If this is directly a pointer type, return it.
@ -609,6 +621,14 @@ const ObjCObjectPointerType *Type::getAsObjCQualifiedIdType() const {
return 0;
}
const ObjCObjectPointerType *Type::getAsObjCInterfacePointerType() const {
if (const ObjCObjectPointerType *OPT = getAsObjCObjectPointerType()) {
if (OPT->getInterfaceType())
return OPT;
}
return 0;
}
const TemplateTypeParmType *Type::getAsTemplateTypeParmType() const {
// There is no sugar for template type parameters, so just return
// the canonical type pointer if it is the right class.
@ -1016,16 +1036,18 @@ void FunctionProtoType::Profile(llvm::FoldingSetNodeID &ID) {
}
void ObjCObjectPointerType::Profile(llvm::FoldingSetNodeID &ID,
const ObjCInterfaceDecl *Decl,
ObjCProtocolDecl **protocols,
QualType OIT, ObjCProtocolDecl **protocols,
unsigned NumProtocols) {
ID.AddPointer(Decl);
ID.AddPointer(OIT.getAsOpaquePtr());
for (unsigned i = 0; i != NumProtocols; i++)
ID.AddPointer(protocols[i]);
}
void ObjCObjectPointerType::Profile(llvm::FoldingSetNodeID &ID) {
Profile(ID, getDecl(), &Protocols[0], getNumProtocols());
if (getNumProtocols())
Profile(ID, getPointeeType(), &Protocols[0], getNumProtocols());
else
Profile(ID, getPointeeType(), 0, 0);
}
void ObjCQualifiedInterfaceType::Profile(llvm::FoldingSetNodeID &ID,
@ -1663,6 +1685,14 @@ void TypenameType::getAsStringInternal(std::string &InnerString, const PrintingP
InnerString = MyString + ' ' + InnerString;
}
bool ObjCInterfaceType::isObjCIdInterface() const {
return this == ObjCObjectPointerType::getIdInterface();
}
bool ObjCInterfaceType::isObjCClassInterface() const {
return this == ObjCObjectPointerType::getClassInterface();
}
void ObjCInterfaceType::getAsStringInternal(std::string &InnerString, const PrintingPolicy &Policy) const {
if (!InnerString.empty()) // Prefix the basic type, e.g. 'typedefname X'.
InnerString = ' ' + InnerString;
@ -1671,15 +1701,7 @@ void ObjCInterfaceType::getAsStringInternal(std::string &InnerString, const Prin
void ObjCObjectPointerType::getAsStringInternal(std::string &InnerString,
const PrintingPolicy &Policy) const {
if (!InnerString.empty()) // Prefix the basic type, e.g. 'typedefname X'.
InnerString = ' ' + InnerString;
std::string ObjCQIString;
if (getDecl())
ObjCQIString = getDecl()->getNameAsString();
else
ObjCQIString = "id";
std::string ObjCQIString = getInterfaceType()->getDecl()->getNameAsString();
if (!qual_empty()) {
ObjCQIString += '<';
@ -1690,6 +1712,11 @@ void ObjCObjectPointerType::getAsStringInternal(std::string &InnerString,
}
ObjCQIString += '>';
}
if (!isObjCIdType() && !isObjCQualifiedIdType())
ObjCQIString += " *"; // Don't forget the implicit pointer.
else if (!InnerString.empty()) // Prefix the basic type, e.g. 'typedefname X'.
InnerString = ' ' + InnerString;
InnerString = ObjCQIString + InnerString;
}

31
clang/lib/Analysis/BasicObjCFoundationChecks.cpp
View File

@ -31,26 +31,21 @@
using namespace clang;
static ObjCInterfaceType* GetReceiverType(ObjCMessageExpr* ME) {
Expr* Receiver = ME->getReceiver();
static const ObjCInterfaceType* GetReceiverType(const ObjCMessageExpr* ME) {
const Expr* Receiver = ME->getReceiver();
if (!Receiver)
return NULL;
QualType X = Receiver->getType();
if (X->isPointerType()) {
Type* TP = X.getTypePtr();
const PointerType* T = TP->getAsPointerType();
return dyn_cast<ObjCInterfaceType>(T->getPointeeType().getTypePtr());
}
if (const ObjCObjectPointerType *PT =
Receiver->getType()->getAsObjCObjectPointerType())
return PT->getInterfaceType();
// FIXME: Support ObjCQualifiedIdType?
return NULL;
}
static const char* GetReceiverNameType(ObjCMessageExpr* ME) {
ObjCInterfaceType* ReceiverType = GetReceiverType(ME);
static const char* GetReceiverNameType(const ObjCMessageExpr* ME) {
const ObjCInterfaceType *ReceiverType = GetReceiverType(ME);
return ReceiverType ? ReceiverType->getDecl()->getIdentifier()->getName()
: NULL;
}
@ -67,7 +62,7 @@ class VISIBILITY_HIDDEN BasicObjCFoundationChecks : public GRSimpleAPICheck {
BugReporter& BR;
ASTContext &Ctx;
bool isNSString(ObjCInterfaceType* T, const char* suffix);
bool isNSString(const ObjCInterfaceType *T, const char* suffix);
bool AuditNSString(NodeTy* N, ObjCMessageExpr* ME);
void Warn(NodeTy* N, Expr* E, const std::string& s);
@ -114,7 +109,7 @@ bool BasicObjCFoundationChecks::Audit(ExplodedNode<GRState>* N,
ObjCMessageExpr* ME =
cast<ObjCMessageExpr>(cast<PostStmt>(N->getLocation()).getStmt());
ObjCInterfaceType* ReceiverType = GetReceiverType(ME);
const ObjCInterfaceType *ReceiverType = GetReceiverType(ME);
if (!ReceiverType)
return false;
@ -129,8 +124,7 @@ bool BasicObjCFoundationChecks::Audit(ExplodedNode<GRState>* N,
name += 2;
// FIXME: Make all of this faster.
// FIXME: Make all of this faster.
if (isNSString(ReceiverType, name))
return AuditNSString(N, ME);
@ -163,9 +157,8 @@ bool BasicObjCFoundationChecks::CheckNilArg(NodeTy* N, unsigned Arg) {
// NSString checking.
//===----------------------------------------------------------------------===//
bool BasicObjCFoundationChecks::isNSString(ObjCInterfaceType* T,
const char* suffix) {
bool BasicObjCFoundationChecks::isNSString(const ObjCInterfaceType *T,
const char* suffix) {
return !strcmp("String", suffix) || !strcmp("MutableString", suffix);
}

96
clang/lib/Analysis/CFRefCount.cpp
View File

@ -547,14 +547,12 @@ public:
return I == M.end() ? M.find(ObjCSummaryKey(S)) : I;
}
ObjCInterfaceDecl* getReceiverDecl(Expr* E) {
const PointerType* PT = E->getType()->getAsPointerType();
if (!PT) return 0;
ObjCInterfaceType* OI = dyn_cast<ObjCInterfaceType>(PT->getPointeeType());
return OI ? OI->getDecl() : 0;
const ObjCInterfaceDecl* getReceiverDecl(Expr* E) {
if (const ObjCObjectPointerType* PT =
E->getType()->getAsObjCObjectPointerType())
return PT->getInterfaceDecl();
return NULL;
}
iterator end() { return M.end(); }
@ -564,7 +562,7 @@ public:
Selector S = ME->getSelector();
if (Expr* Receiver = ME->getReceiver()) {
ObjCInterfaceDecl* OD = getReceiverDecl(Receiver);
const ObjCInterfaceDecl* OD = getReceiverDecl(Receiver);
return OD ? M[ObjCSummaryKey(OD->getIdentifier(), S)] : M[S];
}
@ -886,20 +884,20 @@ bool RetainSummaryManager::isTrackedObjCObjectType(QualType Ty) {
if (!Ctx.isObjCObjectPointerType(Ty))
return false;
// We assume that id<..>, id, and "Class" all represent tracked objects.
const PointerType *PT = Ty->getAsPointerType();
if (PT == 0)
const ObjCObjectPointerType *PT = Ty->getAsObjCObjectPointerType();
// Can be true for objects with the 'NSObject' attribute.
if (!PT)
return true;
// We assume that id<..>, id, and "Class" all represent tracked objects.
if (PT->isObjCIdType() || PT->isObjCQualifiedIdType() ||
PT->isObjCClassType())
return true;
const ObjCInterfaceType *OT = PT->getPointeeType()->getAsObjCInterfaceType();
// We assume that id<..>, id, and "Class" all represent tracked objects.
if (!OT)
return true;
// Does the interface subclass NSObject?
// FIXME: We can memoize here if this gets too expensive.
ObjCInterfaceDecl* ID = OT->getDecl();
const ObjCInterfaceDecl *ID = PT->getInterfaceDecl();
// Assume that anything declared with a forward declaration and no
// @interface subclasses NSObject.
@ -908,7 +906,6 @@ bool RetainSummaryManager::isTrackedObjCObjectType(QualType Ty) {
IdentifierInfo* NSObjectII = &Ctx.Idents.get("NSObject");
for ( ; ID ; ID = ID->getSuperClass())
if (ID->getIdentifier() == NSObjectII)
return true;
@ -977,7 +974,7 @@ RetainSummary* RetainSummaryManager::getSummary(FunctionDecl* FD) {
case 17:
// Handle: id NSMakeCollectable(CFTypeRef)
if (!memcmp(FName, "NSMakeCollectable", 17)) {
S = (RetTy == Ctx.getObjCIdType())
S = (RetTy->isObjCIdType())
? getUnarySummary(FT, cfmakecollectable)
: getPersistentStopSummary();
}
@ -2726,34 +2723,26 @@ CFRefLeakReport::CFRefLeakReport(CFRefBug& D, const CFRefCount &tf,
/// While the the return type can be queried directly from RetEx, when
/// invoking class methods we augment to the return type to be that of
/// a pointer to the class (as opposed it just being id).
static QualType GetReturnType(Expr* RetE, ASTContext& Ctx) {
static QualType GetReturnType(const Expr* RetE, ASTContext& Ctx) {
QualType RetTy = RetE->getType();
// FIXME: We aren't handling id<...>.
const PointerType* PT = RetTy->getAsPointerType();
if (!PT)
return RetTy;
// If RetEx is not a message expression just return its type.
// If RetEx is a message expression, return its types if it is something
// If RetE is not a message expression just return its type.
// If RetE is a message expression, return its types if it is something
/// more specific than id.
if (const ObjCMessageExpr *ME = dyn_cast<ObjCMessageExpr>(RetE))
if (const ObjCObjectPointerType *PT = RetTy->getAsObjCObjectPointerType())
if (PT->isObjCQualifiedIdType() || PT->isObjCIdType() ||
PT->isObjCClassType()) {
// At this point we know the return type of the message expression is
// id, id<...>, or Class. If we have an ObjCInterfaceDecl, we know this
// is a call to a class method whose type we can resolve. In such
// cases, promote the return type to XXX* (where XXX is the class).
const ObjCInterfaceDecl *D = ME->getClassInfo().first;
return !D ? RetTy : Ctx.getPointerType(Ctx.getObjCInterfaceType(D));
}
ObjCMessageExpr* ME = dyn_cast<ObjCMessageExpr>(RetE);
if (!ME || !Ctx.isObjCIdStructType(PT->getPointeeType()))
return RetTy;
ObjCInterfaceDecl* D = ME->getClassInfo().first;
// At this point we know the return type of the message expression is id.
// If we have an ObjCInterceDecl, we know this is a call to a class method
// whose type we can resolve. In such cases, promote the return type to
// Class*.
return !D ? RetTy : Ctx.getPointerType(Ctx.getObjCInterfaceType(D));
return RetTy;
}
void CFRefCount::EvalSummary(ExplodedNodeSet<GRState>& Dst,
GRExprEngine& Eng,
GRStmtNodeBuilder<GRState>& Builder,
@ -3009,26 +2998,21 @@ void CFRefCount::EvalObjCMessageExpr(ExplodedNodeSet<GRState>& Dst,
SVal V = St->getSValAsScalarOrLoc(Receiver);
SymbolRef Sym = V.getAsLocSymbol();
if (Sym) {
if (const RefVal* T = St->get<RefBindings>(Sym)) {
QualType Ty = T->getType();
if (const PointerType* PT = Ty->getAsPointerType()) {
QualType PointeeTy = PT->getPointeeType();
if (ObjCInterfaceType* IT = dyn_cast<ObjCInterfaceType>(PointeeTy))
ID = IT->getDecl();
}
if (const ObjCObjectPointerType* PT =
T->getType()->getAsObjCObjectPointerType())
ID = PT->getInterfaceDecl();
}
}
// FIXME: this is a hack. This may or may not be the actual method
// that is called.
if (!ID) {
if (const PointerType *PT = Receiver->getType()->getAsPointerType())
if (const ObjCInterfaceType *p =
PT->getPointeeType()->getAsObjCInterfaceType())
ID = p->getDecl();
if (const ObjCObjectPointerType *PT =
Receiver->getType()->getAsObjCObjectPointerType())
ID = PT->getInterfaceDecl();
}
// FIXME: The receiver could be a reference to a class, meaning that

20
clang/lib/Analysis/CheckNSError.cpp
View File

@ -162,16 +162,22 @@ NSErrorCheck::CheckSignature(FunctionDecl& F, QualType& ResultTy,
bool NSErrorCheck::CheckNSErrorArgument(QualType ArgTy) {
const PointerType* PPT = ArgTy->getAsPointerType();
if (!PPT) return false;
if (!PPT)
return false;
const PointerType* PT = PPT->getPointeeType()->getAsPointerType();
if (!PT) return false;
const ObjCObjectPointerType* PT =
PPT->getPointeeType()->getAsObjCObjectPointerType();
if (!PT)
return false;
const ObjCInterfaceType *IT =
PT->getPointeeType()->getAsObjCInterfaceType();
const ObjCInterfaceDecl *ID = PT->getInterfaceDecl();
if (!IT) return false;
return IT->getDecl()->getIdentifier() == II;
// FIXME: Can ID ever be NULL?
if (ID)
return II == ID->getIdentifier();
return false;
}
bool NSErrorCheck::CheckCFErrorArgument(QualType ArgTy) {

4
clang/lib/Analysis/CheckObjCInstMethSignature.cpp
View File

@ -30,8 +30,8 @@ static bool AreTypesCompatible(QualType Derived, QualType Ancestor,
// Right now don't compare the compatibility of pointers. That involves
// looking at subtyping relationships. FIXME: Future patch.
if ((Derived->isPointerType() || Derived->isObjCQualifiedIdType()) &&
(Ancestor->isPointerType() || Ancestor->isObjCQualifiedIdType()))
if ((Derived->isPointerType() || Derived->isObjCObjectPointerType()) &&
(Ancestor->isPointerType() || Ancestor->isObjCObjectPointerType()))
return true;
return C.typesAreCompatible(Derived, Ancestor);

6
clang/lib/CodeGen/CGDebugInfo.cpp
View File

@ -761,8 +761,10 @@ llvm::DIType CGDebugInfo::getOrCreateType(QualType Ty,
// Unsupported types
return llvm::DIType();
case Type::ObjCObjectPointer: // Encode id<p> in debug info just like id.
return Slot = getOrCreateType(M->getContext().getObjCIdType(), Unit);
{
ObjCObjectPointerType *OPT = cast<ObjCObjectPointerType>(Ty);
return Slot = CreateType(OPT->getInterfaceType(), Unit);
}
case Type::ObjCQualifiedInterface: // Drop protocols from interface.
case Type::ObjCInterface:
return Slot = CreateType(cast<ObjCInterfaceType>(Ty), Unit);

17
clang/lib/CodeGen/CGExpr.cpp
View File

@ -257,7 +257,6 @@ void CodeGenFunction::EmitStoreOfScalar(llvm::Value *Value, llvm::Value *Addr,
Addr = Builder.CreateBitCast(Addr, MemTy, "storetmp");
}
}
Builder.CreateStore(Value, Addr, Volatile);
}
@ -758,11 +757,11 @@ LValue CodeGenFunction::EmitUnaryOpLValue(const UnaryOperator *E) {
default: assert(0 && "Unknown unary operator lvalue!");
case UnaryOperator::Deref:
{
QualType T =
E->getSubExpr()->getType()->getAsPointerType()->getPointeeType();
QualType T = E->getSubExpr()->getType()->getPointeeType();
assert(!T.isNull() && "CodeGenFunction::EmitUnaryOpLValue: Illegal type");
LValue LV = LValue::MakeAddr(EmitScalarExpr(E->getSubExpr()),
ExprTy->getAsPointerType()->getPointeeType()
.getCVRQualifiers(),
T.getCVRQualifiers(),
getContext().getObjCGCAttrKind(T));
// We should not generate __weak write barrier on indirect reference
// of a pointer to object; as in void foo (__weak id *param); *param = 0;
@ -900,7 +899,10 @@ LValue CodeGenFunction::EmitArraySubscriptExpr(const ArraySubscriptExpr *E) {
Address = Builder.CreateGEP(Base, Idx, "arrayidx");
}
QualType T = E->getBase()->getType()->getAsPointerType()->getPointeeType();
QualType T = E->getBase()->getType()->getPointeeType();
assert(!T.isNull() &&
"CodeGenFunction::EmitArraySubscriptExpr(): Illegal base type");
LValue LV = LValue::MakeAddr(Address,
T.getCVRQualifiers(),
getContext().getObjCGCAttrKind(T));
@ -1261,8 +1263,7 @@ LValue CodeGenFunction::EmitObjCIvarRefLValue(const ObjCIvarRefExpr *E) {
QualType ObjectTy;
if (E->isArrow()) {
BaseValue = EmitScalarExpr(BaseExpr);
const PointerType *PTy = BaseExpr->getType()->getAsPointerType();
ObjectTy = PTy->getPointeeType();
ObjectTy = BaseExpr->getType()->getPointeeType();
CVRQualifiers = ObjectTy.getCVRQualifiers();
} else {
LValue BaseLV = EmitLValue(BaseExpr);

24
clang/lib/CodeGen/CGExprScalar.cpp
View File

@ -987,7 +987,7 @@ Value *ScalarExprEmitter::EmitOverflowCheckedBinOp(const BinOpInfo &Ops) {
}
Value *ScalarExprEmitter::EmitAdd(const BinOpInfo &Ops) {
if (!Ops.Ty->isPointerType()) {
if (!Ops.Ty->isPointerType() && !Ops.Ty->isObjCObjectPointerType()) {
if (CGF.getContext().getLangOptions().OverflowChecking &&
Ops.Ty->isSignedIntegerType())
return EmitOverflowCheckedBinOp(Ops);
@ -998,20 +998,24 @@ Value *ScalarExprEmitter::EmitAdd(const BinOpInfo &Ops) {
return Builder.CreateAdd(Ops.LHS, Ops.RHS, "add");
}
if (Ops.Ty->getAsPointerType()->isVariableArrayType()) {
if (Ops.Ty->isPointerType() &&
Ops.Ty->getAsPointerType()->isVariableArrayType()) {
// The amount of the addition needs to account for the VLA size
CGF.ErrorUnsupported(Ops.E, "VLA pointer addition");
}
Value *Ptr, *Idx;
Expr *IdxExp;
const PointerType *PT;
if ((PT = Ops.E->getLHS()->getType()->getAsPointerType())) {
const PointerType *PT = Ops.E->getLHS()->getType()->getAsPointerType();
const ObjCObjectPointerType *OPT =
Ops.E->getLHS()->getType()->getAsObjCObjectPointerType();
if (PT || OPT) {
Ptr = Ops.LHS;
Idx = Ops.RHS;
IdxExp = Ops.E->getRHS();
} else { // int + pointer
} else { // int + pointer
PT = Ops.E->getRHS()->getType()->getAsPointerType();
assert(PT && "Invalid add expr");
OPT = Ops.E->getRHS()->getType()->getAsObjCObjectPointerType();
assert((PT || OPT) && "Invalid add expr");
Ptr = Ops.RHS;
Idx = Ops.LHS;
IdxExp = Ops.E->getLHS();
@ -1027,8 +1031,7 @@ Value *ScalarExprEmitter::EmitAdd(const BinOpInfo &Ops) {
else
Idx = Builder.CreateZExt(Idx, IdxType, "idx.ext");
}
const QualType ElementType = PT->getPointeeType();
const QualType ElementType = PT ? PT->getPointeeType() : OPT->getPointeeType();
// Handle interface types, which are not represented with a concrete
// type.
if (const ObjCInterfaceType *OIT = dyn_cast<ObjCInterfaceType>(ElementType)) {
@ -1066,7 +1069,8 @@ Value *ScalarExprEmitter::EmitSub(const BinOpInfo &Ops) {
return Builder.CreateSub(Ops.LHS, Ops.RHS, "sub");
}
if (Ops.E->getLHS()->getType()->getAsPointerType()->isVariableArrayType()) {
if (Ops.E->getLHS()->getType()->isPointerType() &&
Ops.E->getLHS()->getType()->getAsPointerType()->isVariableArrayType()) {
// The amount of the addition needs to account for the VLA size for
// ptr-int
// The amount of the division needs to account for the VLA size for
@ -1075,7 +1079,7 @@ Value *ScalarExprEmitter::EmitSub(const BinOpInfo &Ops) {
}
const QualType LHSType = Ops.E->getLHS()->getType();
const QualType LHSElementType = LHSType->getAsPointerType()->getPointeeType();
const QualType LHSElementType = LHSType->getPointeeType();
if (!isa<llvm::PointerType>(Ops.RHS->getType())) {
// pointer - int
Value *Idx = Ops.RHS;

4
clang/lib/CodeGen/CGObjC.cpp
View File

@ -305,8 +305,8 @@ llvm::Value *CodeGenFunction::LoadObjCSelf() {
QualType CodeGenFunction::TypeOfSelfObject() {
const ObjCMethodDecl *OMD = cast<ObjCMethodDecl>(CurFuncDecl);
ImplicitParamDecl *selfDecl = OMD->getSelfDecl();
const PointerType *PTy =
cast<PointerType>(getContext().getCanonicalType(selfDecl->getType()));
const ObjCObjectPointerType *PTy = cast<ObjCObjectPointerType>(
getContext().getCanonicalType(selfDecl->getType()));
return PTy->getPointeeType();
}

9
clang/lib/CodeGen/CGObjCGNU.cpp
View File

@ -1338,7 +1338,7 @@ void CGObjCGNU::EmitTryOrSynchronizedStmt(CodeGen::CodeGenFunction &CGF,
Handlers.push_back(std::make_pair(CatchDecl, CatchStmt->getCatchBody()));
// @catch() and @catch(id) both catch any ObjC exception
if (!CatchDecl || CGF.getContext().isObjCIdType(CatchDecl->getType())
if (!CatchDecl || CatchDecl->getType()->isObjCIdType()
|| CatchDecl->getType()->isObjCQualifiedIdType()) {
// Use i8* null here to signal this is a catch all, not a cleanup.
ESelArgs.push_back(NULLPtr);
@ -1348,10 +1348,11 @@ void CGObjCGNU::EmitTryOrSynchronizedStmt(CodeGen::CodeGenFunction &CGF,
}
// All other types should be Objective-C interface pointer types.
const PointerType *PT = CatchDecl->getType()->getAsPointerType();
assert(PT && "Invalid @catch type.");
const ObjCObjectPointerType *OPT =
CatchDecl->getType()->getAsObjCObjectPointerType();
assert(OPT && "Invalid @catch type.");
const ObjCInterfaceType *IT =
PT->getPointeeType()->getAsObjCInterfaceType();
OPT->getPointeeType()->getAsObjCInterfaceType();
assert(IT && "Invalid @catch type.");
llvm::Value *EHType =
MakeConstantString(IT->getDecl()->getNameAsString());

19
clang/lib/CodeGen/CGObjCMac.cpp
View File

@ -2523,19 +2523,18 @@ void CGObjCMac::EmitTryOrSynchronizedStmt(CodeGen::CodeGenFunction &CGF,
llvm::BasicBlock *NextCatchBlock = CGF.createBasicBlock("catch");
const ParmVarDecl *CatchParam = CatchStmt->getCatchParamDecl();
const PointerType *PT = 0;
const ObjCObjectPointerType *OPT = 0;
// catch(...) always matches.
if (!CatchParam) {
AllMatched = true;
} else {
PT = CatchParam->getType()->getAsPointerType();
OPT = CatchParam->getType()->getAsObjCObjectPointerType();
// catch(id e) always matches.
// FIXME: For the time being we also match id<X>; this should
// be rejected by Sema instead.
if ((PT && CGF.getContext().isObjCIdStructType(PT->getPointeeType())) ||
CatchParam->getType()->isObjCQualifiedIdType())
if (OPT && (OPT->isObjCIdType()) || OPT->isObjCQualifiedIdType())
AllMatched = true;
}
@ -2551,8 +2550,8 @@ void CGObjCMac::EmitTryOrSynchronizedStmt(CodeGen::CodeGenFunction &CGF,
break;
}
assert(PT && "Unexpected non-pointer type in @catch");
QualType T = PT->getPointeeType();
assert(OPT && "Unexpected non-object pointer type in @catch");
QualType T = OPT->getPointeeType();
const ObjCInterfaceType *ObjCType = T->getAsObjCInterfaceType();
assert(ObjCType && "Catch parameter must have Objective-C type!");
@ -5443,7 +5442,7 @@ CGObjCNonFragileABIMac::EmitTryOrSynchronizedStmt(CodeGen::CodeGenFunction &CGF,
break;
}
if (CGF.getContext().isObjCIdType(CatchDecl->getType()) ||
if (CatchDecl->getType()->isObjCIdType() ||
CatchDecl->getType()->isObjCQualifiedIdType()) {
llvm::Value *IDEHType =
CGM.getModule().getGlobalVariable("OBJC_EHTYPE_id");
@ -5459,10 +5458,10 @@ CGObjCNonFragileABIMac::EmitTryOrSynchronizedStmt(CodeGen::CodeGenFunction &CGF,
}
// All other types should be Objective-C interface pointer types.
const PointerType *PT = CatchDecl->getType()->getAsPointerType();
const ObjCObjectPointerType *PT =
CatchDecl->getType()->getAsObjCObjectPointerType();
assert(PT && "Invalid @catch type.");
const ObjCInterfaceType *IT =
PT->getPointeeType()->getAsObjCInterfaceType();
const ObjCInterfaceType *IT = PT->getInterfaceType();
assert(IT && "Invalid @catch type.");
llvm::Value *EHType = GetInterfaceEHType(IT->getDecl(), false);
SelectorArgs.push_back(EHType);

13
clang/lib/CodeGen/CodeGenTypes.cpp
View File

@ -215,6 +215,7 @@ static const llvm::Type* getTypeForFormat(const llvm::fltSemantics &format) {
const llvm::Type *CodeGenTypes::ConvertNewType(QualType T) {
const clang::Type &Ty = *Context.getCanonicalType(T);
//T->dump();
switch (Ty.getTypeClass()) {
#define TYPE(Class, Base)
#define ABSTRACT_TYPE(Class, Base)
@ -353,10 +354,14 @@ const llvm::Type *CodeGenTypes::ConvertNewType(QualType T) {
return T;
}
case Type::ObjCObjectPointer:
// Protocols don't influence the LLVM type.
return ConvertTypeRecursive(Context.getObjCIdType());
case Type::ObjCObjectPointer: {
// Qualified id types don't influence the LLVM type, here we always return
// an opaque type for 'id'.
const llvm::Type *&T = InterfaceTypes[0];
if (!T)
T = llvm::OpaqueType::get();
return llvm::PointerType::getUnqual(T);
}
case Type::Record:
case Type::Enum: {
const TagDecl *TD = cast<TagType>(Ty).getDecl();

5
clang/lib/CodeGen/Mangle.cpp
View File

@ -480,6 +480,11 @@ void CXXNameMangler::mangleType(QualType T) {
Out << 'P';
mangleType(PT->getPointeeType());
}
else if (const ObjCObjectPointerType *PT =
dyn_cast<ObjCObjectPointerType>(T.getTypePtr())) {
Out << 'P';
mangleType(PT->getPointeeType());
}
// ::= R <type> # reference-to
else if (const LValueReferenceType *RT =
dyn_cast<LValueReferenceType>(T.getTypePtr())) {

6
clang/lib/Frontend/PCHReader.cpp
View File

@ -1531,6 +1531,7 @@ void PCHReader::InitializeContext(ASTContext &Ctx) {
Context->setObjCProtoType(GetType(Proto));
if (unsigned Class = SpecialTypes[pch::SPECIAL_TYPE_OBJC_CLASS])
Context->setObjCClassType(GetType(Class));
if (unsigned String = SpecialTypes[pch::SPECIAL_TYPE_CF_CONSTANT_STRING])
Context->setCFConstantStringType(GetType(String));
if (unsigned FastEnum
@ -1934,13 +1935,12 @@ QualType PCHReader::ReadTypeRecord(uint64_t Offset) {
case pch::TYPE_OBJC_OBJECT_POINTER: {
unsigned Idx = 0;
ObjCInterfaceDecl *ItfD =
cast_or_null<ObjCInterfaceDecl>(GetDecl(Record[Idx++]));
QualType OIT = GetType(Record[Idx++]);
unsigned NumProtos = Record[Idx++];
llvm::SmallVector<ObjCProtocolDecl*, 4> Protos;
for (unsigned I = 0; I != NumProtos; ++I)
Protos.push_back(cast<ObjCProtocolDecl>(GetDecl(Record[Idx++])));
return Context->getObjCObjectPointerType(ItfD, Protos.data(), NumProtos);
return Context->getObjCObjectPointerType(OIT, Protos.data(), NumProtos);
}
}
// Suppress a GCC warning

2
clang/lib/Frontend/PCHWriter.cpp
View File

@ -255,7 +255,7 @@ PCHTypeWriter::VisitObjCQualifiedInterfaceType(
void
PCHTypeWriter::VisitObjCObjectPointerType(const ObjCObjectPointerType *T) {
Writer.AddDeclRef(T->getDecl(), Record);
Writer.AddTypeRef(T->getPointeeType(), Record);
Record.push_back(T->getNumProtocols());
for (ObjCInterfaceType::qual_iterator I = T->qual_begin(),
E = T->qual_end(); I != E; ++I)

7
clang/lib/Frontend/RewriteObjC.cpp
View File

@ -2163,9 +2163,10 @@ ObjCInterfaceDecl *RewriteObjC::isSuperReceiver(Expr *recExpr) {
if (!CurMethodDef || !CurMethodDef->isInstanceMethod()) return 0;
if (ObjCSuperExpr *Super = dyn_cast<ObjCSuperExpr>(recExpr)) {
const PointerType *PT = Super->getType()->getAsPointerType();
assert(PT);
ObjCInterfaceType *IT = cast<ObjCInterfaceType>(PT->getPointeeType());
const ObjCObjectPointerType *OPT =
Super->getType()->getAsObjCObjectPointerType();
assert(OPT);
const ObjCInterfaceType *IT = OPT->getInterfaceType();
return IT->getDecl();
}
return 0;

43
clang/lib/Sema/Sema.cpp
View File

@ -53,9 +53,9 @@ static void ConvertArgToStringFn(Diagnostic::ArgumentKind Kind, intptr_t Val,
// Don't desugar magic Objective-C types.
Ty.getUnqualifiedType() != Context.getObjCIdType() &&
Ty.getUnqualifiedType() != Context.getObjCClassType() &&
Ty.getUnqualifiedType() != Context.getObjCSelType() &&
Ty.getUnqualifiedType() != Context.getObjCProtoType() &&
Ty.getUnqualifiedType() != Context.getObjCClassType() &&
// Not va_list.
Ty.getUnqualifiedType() != Context.getBuiltinVaListType()) {
@ -140,17 +140,6 @@ void Sema::ActOnTranslationUnitScope(SourceLocation Loc, Scope *S) {
Context.setObjCSelType(Context.getTypeDeclType(SelTypedef));
}
if (Context.getObjCClassType().isNull()) {
RecordDecl *ClassTag = CreateStructDecl(Context, "objc_class");
QualType ClassT = Context.getPointerType(Context.getTagDeclType(ClassTag));
TypedefDecl *ClassTypedef =
TypedefDecl::Create(Context, CurContext, SourceLocation(),
&Context.Idents.get("Class"), ClassT);
PushOnScopeChains(ClassTag, TUScope);
PushOnScopeChains(ClassTypedef, TUScope);
Context.setObjCClassType(Context.getTypeDeclType(ClassTypedef));
}
// Synthesize "@class Protocol;
if (Context.getObjCProtoType().isNull()) {
ObjCInterfaceDecl *ProtocolDecl =
@ -160,20 +149,38 @@ void Sema::ActOnTranslationUnitScope(SourceLocation Loc, Scope *S) {
Context.setObjCProtoType(Context.getObjCInterfaceType(ProtocolDecl));
PushOnScopeChains(ProtocolDecl, TUScope);
}
// Synthesize "typedef struct objc_object { Class isa; } *id;"
// Create the built-in decls/typedefs for 'id' and 'Class'.
if (Context.getObjCIdType().isNull()) {
RecordDecl *ObjectTag = CreateStructDecl(Context, "objc_object");
ObjCInterfaceDecl *IdIDecl =
ObjCInterfaceDecl::Create(Context, CurContext, SourceLocation(),
&Context.Idents.get("id"),
SourceLocation(), true);
QualType IdIType = Context.getObjCInterfaceType(IdIDecl);
QualType ObjCIdType = Context.getObjCObjectPointerType(IdIType);
QualType ObjT = Context.getPointerType(Context.getTagDeclType(ObjectTag));
PushOnScopeChains(ObjectTag, TUScope);
TypedefDecl *IdTypedef = TypedefDecl::Create(Context, CurContext,
SourceLocation(),
&Context.Idents.get("id"),
ObjT);
ObjCIdType);
PushOnScopeChains(IdTypedef, TUScope);
Context.setObjCIdType(Context.getTypeDeclType(IdTypedef));
}
// Create the built-in decls/typedefs and type for "Class".
if (Context.getObjCClassType().isNull()) {
ObjCInterfaceDecl *ClassIDecl =
ObjCInterfaceDecl::Create(Context, CurContext, SourceLocation(),
&Context.Idents.get("Class"),
SourceLocation(), true);
QualType ClassIType = Context.getObjCInterfaceType(ClassIDecl);
QualType ObjCClassType = Context.getObjCObjectPointerType(ClassIType);
TypedefDecl *ClassTypedef = TypedefDecl::Create(Context, CurContext,
SourceLocation(),
&Context.Idents.get("Class"),
ObjCClassType);
PushOnScopeChains(ClassTypedef, TUScope);
Context.setObjCClassType(Context.getTypeDeclType(ClassTypedef));
}
}
Sema::Sema(Preprocessor &pp, ASTContext &ctxt, ASTConsumer &consumer,

2
clang/lib/Sema/Sema.h
View File

@ -3037,6 +3037,8 @@ public:
// Helper function for CheckAssignmentConstraints (C99 6.5.16.1p1)
AssignConvertType CheckPointerTypesForAssignment(QualType lhsType,
QualType rhsType);
AssignConvertType CheckPointeeTypesForAssignment(QualType lhsType,
QualType rhsType);
// Helper function for CheckAssignmentConstraints involving two
// block pointer types.

12
clang/lib/Sema/SemaDecl.cpp
View File

@ -516,8 +516,6 @@ void Sema::MergeTypeDefDecl(TypedefDecl *New, Decl *OldD) {
if (New->isInvalidDecl() || OldD->isInvalidDecl())
return New->setInvalidDecl();
bool objc_types = false;
// Allow multiple definitions for ObjC built-in typedefs.
// FIXME: Verify the underlying types are equivalent!
if (getLangOptions().ObjC1) {
@ -527,13 +525,15 @@ void Sema::MergeTypeDefDecl(TypedefDecl *New, Decl *OldD) {
case 2:
if (!TypeID->isStr("id"))
break;
Context.setObjCIdType(Context.getTypeDeclType(New));
objc_types = true;
// Install the built-in type for 'id', ignoring the current definition.
New->setTypeForDecl(Context.getObjCIdType().getTypePtr());
return;
break;
case 5:
if (!TypeID->isStr("Class"))
break;
Context.setObjCClassType(Context.getTypeDeclType(New));
// Install the built-in type for 'Class', ignoring the current definition.
New->setTypeForDecl(Context.getObjCClassType().getTypePtr());
return;
case 3:
if (!TypeID->isStr("SEL"))
@ -578,7 +578,7 @@ void Sema::MergeTypeDefDecl(TypedefDecl *New, Decl *OldD) {
return New->setInvalidDecl();
}
if (objc_types || getLangOptions().Microsoft)
if (getLangOptions().Microsoft)
return;
// C++ [dcl.typedef]p2:

5
clang/lib/Sema/SemaDeclAttr.cpp
View File

@ -117,7 +117,7 @@ static bool isFunctionOrMethodVariadic(Decl *d) {
}
static inline bool isNSStringType(QualType T, ASTContext &Ctx) {
const PointerType *PT = T->getAsPointerType();
const ObjCObjectPointerType *PT = T->getAsObjCObjectPointerType();
if (!PT)
return false;
@ -1690,7 +1690,8 @@ static void HandleNSReturnsRetainedAttr(Decl *d, const AttributeList &Attr,
return;
}
if (!(S.Context.isObjCNSObjectType(RetTy) || RetTy->getAsPointerType())) {
if (!(S.Context.isObjCNSObjectType(RetTy) || RetTy->getAsPointerType()
|| RetTy->getAsObjCObjectPointerType())) {
S.Diag(Attr.getLoc(), diag::warn_ns_attribute_wrong_return_type)
<< Attr.getName();
return;

2
clang/lib/Sema/SemaDeclObjC.cpp
View File

@ -2048,7 +2048,7 @@ Sema::DeclPtrTy Sema::ActOnPropertyImplDecl(SourceLocation AtLoc,
<< property->getDeclName() << Ivar->getDeclName();
// Fall thru - see previous comment
}
if ((Context.isObjCObjectPointerType(property->getType()) ||
if ((property->getType()->isObjCObjectPointerType() ||
PropType.isObjCGCStrong()) && IvarType.isObjCGCWeak() &&
getLangOptions().getGCMode() != LangOptions::NonGC) {
Diag(PropertyLoc, diag::error_strong_property)

441
clang/lib/Sema/SemaExpr.cpp
View File

@ -925,8 +925,8 @@ Sema::ActOnDeclarationNameExpr(Scope *S, SourceLocation Loc,
QualType T;
if (getCurMethodDecl()->isInstanceMethod())
T = Context.getPointerType(Context.getObjCInterfaceType(
getCurMethodDecl()->getClassInterface()));
T = Context.getObjCObjectPointerType(Context.getObjCInterfaceType(
getCurMethodDecl()->getClassInterface()));
else
T = Context.getObjCClassType();
return Owned(new (Context) ObjCSuperExpr(Loc, T));
@ -1844,6 +1844,17 @@ Sema::ActOnArraySubscriptExpr(Scope *S, ExprArg Base, SourceLocation LLoc,
BaseExpr = RHSExp;
IndexExpr = LHSExp;
ResultType = PTy->getPointeeType();
} else if (const ObjCObjectPointerType *PTy =
LHSTy->getAsObjCObjectPointerType()) {
BaseExpr = LHSExp;
IndexExpr = RHSExp;
ResultType = PTy->getPointeeType();
} else if (const ObjCObjectPointerType *PTy =
RHSTy->getAsObjCObjectPointerType()) {
// Handle the uncommon case of "123[Ptr]".
BaseExpr = RHSExp;
IndexExpr = LHSExp;
ResultType = PTy->getPointeeType();
} else if (const VectorType *VTy = LHSTy->getAsVectorType()) {
BaseExpr = LHSExp; // vectors: V[123]
IndexExpr = RHSExp;
@ -2089,6 +2100,8 @@ Sema::ActOnMemberReferenceExpr(Scope *S, ExprArg Base, SourceLocation OpLoc,
MemberLoc));
else if (const PointerType *PT = BaseType->getAsPointerType())
BaseType = PT->getPointeeType();
else if (BaseType->isObjCObjectPointerType())
;
else if (getLangOptions().CPlusPlus && BaseType->isRecordType())
return Owned(BuildOverloadedArrowExpr(S, BaseExpr, OpLoc,
MemberLoc, Member));
@ -2212,12 +2225,71 @@ Sema::ActOnMemberReferenceExpr(Scope *S, ExprArg Base, SourceLocation OpLoc,
<< DeclarationName(&Member) << int(OpKind == tok::arrow));
}
// Handle properties on ObjC 'Class' types.
if (OpKind == tok::period && (BaseType->isObjCClassType())) {
// Also must look for a getter name which uses property syntax.
Selector Sel = PP.getSelectorTable().getNullarySelector(&Member);
if (ObjCMethodDecl *MD = getCurMethodDecl()) {
ObjCInterfaceDecl *IFace = MD->getClassInterface();
ObjCMethodDecl *Getter;
// FIXME: need to also look locally in the implementation.
if ((Getter = IFace->lookupClassMethod(Sel))) {
// Check the use of this method.
if (DiagnoseUseOfDecl(Getter, MemberLoc))
return ExprError();
}
// If we found a getter then this may be a valid dot-reference, we
// will look for the matching setter, in case it is needed.
Selector SetterSel =
SelectorTable::constructSetterName(PP.getIdentifierTable(),
PP.getSelectorTable(), &Member);
ObjCMethodDecl *Setter = IFace->lookupClassMethod(SetterSel);
if (!Setter) {
// If this reference is in an @implementation, also check for 'private'
// methods.
Setter = FindMethodInNestedImplementations(IFace, SetterSel);
}
// Look through local category implementations associated with the class.
if (!Setter) {
for (unsigned i = 0; i < ObjCCategoryImpls.size() && !Setter; i++) {
if (ObjCCategoryImpls[i]->getClassInterface() == IFace)
Setter = ObjCCategoryImpls[i]->getClassMethod(SetterSel);
}
}
if (Setter && DiagnoseUseOfDecl(Setter, MemberLoc))
return ExprError();
if (Getter || Setter) {
QualType PType;
if (Getter)
PType = Getter->getResultType();
else {
for (ObjCMethodDecl::param_iterator PI = Setter->param_begin(),
E = Setter->param_end(); PI != E; ++PI)
PType = (*PI)->getType();
}
// FIXME: we must check that the setter has property type.
return Owned(new (Context) ObjCKVCRefExpr(Getter, PType,
Setter, MemberLoc, BaseExpr));
}
return ExprError(Diag(MemberLoc, diag::err_property_not_found)
<< &Member << BaseType);
}
}
// Handle access to Objective-C instance variables, such as "Obj->ivar" and
// (*Obj).ivar.
if (const ObjCInterfaceType *IFTy = BaseType->getAsObjCInterfaceType()) {
if ((OpKind == tok::arrow && BaseType->isObjCObjectPointerType()) ||
(OpKind == tok::period && BaseType->isObjCInterfaceType())) {
const ObjCObjectPointerType *OPT = BaseType->getAsObjCObjectPointerType();
const ObjCInterfaceType *IFaceT =
OPT ? OPT->getInterfaceType() : BaseType->getAsObjCInterfaceType();
ObjCInterfaceDecl *IDecl = IFaceT->getDecl();
ObjCInterfaceDecl *ClassDeclared;
if (ObjCIvarDecl *IV = IFTy->getDecl()->lookupInstanceVariable(&Member,
ClassDeclared)) {
if (ObjCIvarDecl *IV = IDecl->lookupInstanceVariable(&Member,
ClassDeclared)) {
// If the decl being referenced had an error, return an error for this
// sub-expr without emitting another error, in order to avoid cascading
// error cases.
@ -2249,12 +2321,12 @@ Sema::ActOnMemberReferenceExpr(Scope *S, ExprArg Base, SourceLocation OpLoc,
}
if (IV->getAccessControl() == ObjCIvarDecl::Private) {
if (ClassDeclared != IFTy->getDecl() ||
if (ClassDeclared != IDecl ||
ClassOfMethodDecl != ClassDeclared)
Diag(MemberLoc, diag::error_private_ivar_access) << IV->getDeclName();
}
// @protected
else if (!IFTy->getDecl()->isSuperClassOf(ClassOfMethodDecl))
else if (!IDecl->isSuperClassOf(ClassOfMethodDecl))
Diag(MemberLoc, diag::error_protected_ivar_access) << IV->getDeclName();
}
@ -2263,18 +2335,46 @@ Sema::ActOnMemberReferenceExpr(Scope *S, ExprArg Base, SourceLocation OpLoc,
OpKind == tok::arrow));
}
return ExprError(Diag(MemberLoc, diag::err_typecheck_member_reference_ivar)
<< IFTy->getDecl()->getDeclName() << &Member
<< IDecl->getDeclName() << &Member
<< BaseExpr->getSourceRange());
}
// Handle properties on qualified "id" protocols.
const ObjCObjectPointerType *QIdTy;
if (OpKind == tok::period && (QIdTy = BaseType->getAsObjCQualifiedIdType())) {
// Check protocols on qualified interfaces.
Selector Sel = PP.getSelectorTable().getNullarySelector(&Member);
if (Decl *PMDecl = FindGetterNameDecl(QIdTy, Member, Sel, Context)) {
if (ObjCPropertyDecl *PD = dyn_cast<ObjCPropertyDecl>(PMDecl)) {
// Check the use of this declaration
if (DiagnoseUseOfDecl(PD, MemberLoc))
return ExprError();
return Owned(new (Context) ObjCPropertyRefExpr(PD, PD->getType(),
MemberLoc, BaseExpr));
}
if (ObjCMethodDecl *OMD = dyn_cast<ObjCMethodDecl>(PMDecl)) {
// Check the use of this method.
if (DiagnoseUseOfDecl(OMD, MemberLoc))
return ExprError();
return Owned(new (Context) ObjCMessageExpr(BaseExpr, Sel,
OMD->getResultType(),
OMD, OpLoc, MemberLoc,
NULL, 0));
}
}
return ExprError(Diag(MemberLoc, diag::err_property_not_found)
<< &Member << BaseType);
}
// Handle Objective-C property access, which is "Obj.property" where Obj is a
// pointer to a (potentially qualified) interface type.
const PointerType *PTy;
const ObjCInterfaceType *IFTy;
if (OpKind == tok::period && (PTy = BaseType->getAsPointerType()) &&
(IFTy = PTy->getPointeeType()->getAsObjCInterfaceType())) {
ObjCInterfaceDecl *IFace = IFTy->getDecl();
const ObjCObjectPointerType *OPT;
if (OpKind == tok::period &&
(OPT = BaseType->getAsObjCInterfacePointerType())) {
const ObjCInterfaceType *IFaceT = OPT->getInterfaceType();
ObjCInterfaceDecl *IFace = IFaceT->getDecl();
// Search for a declared property first.
if (ObjCPropertyDecl *PD = IFace->FindPropertyDeclaration(&Member)) {
// Check whether we can reference this property.
@ -2288,10 +2388,9 @@ Sema::ActOnMemberReferenceExpr(Scope *S, ExprArg Base, SourceLocation OpLoc,
return Owned(new (Context) ObjCPropertyRefExpr(PD, ResTy,
MemberLoc, BaseExpr));
}
// Check protocols on qualified interfaces.
for (ObjCInterfaceType::qual_iterator I = IFTy->qual_begin(),
E = IFTy->qual_end(); I != E; ++I)
for (ObjCObjectPointerType::qual_iterator I = IFaceT->qual_begin(),
E = IFaceT->qual_end(); I != E; ++I)
if (ObjCPropertyDecl *PD = (*I)->FindPropertyDeclaration(&Member)) {
// Check whether we can reference this property.
if (DiagnoseUseOfDecl(PD, MemberLoc))
@ -2300,7 +2399,16 @@ Sema::ActOnMemberReferenceExpr(Scope *S, ExprArg Base, SourceLocation OpLoc,
return Owned(new (Context) ObjCPropertyRefExpr(PD, PD->getType(),
MemberLoc, BaseExpr));
}
for (ObjCObjectPointerType::qual_iterator I = OPT->qual_begin(),
E = OPT->qual_end(); I != E; ++I)
if (ObjCPropertyDecl *PD = (*I)->FindPropertyDeclaration(&Member)) {
// Check whether we can reference this property.
if (DiagnoseUseOfDecl(PD, MemberLoc))
return ExprError();
return Owned(new (Context) ObjCPropertyRefExpr(PD, PD->getType(),
MemberLoc, BaseExpr));
}
// If that failed, look for an "implicit" property by seeing if the nullary
// selector is implemented.
@ -2365,88 +2473,6 @@ Sema::ActOnMemberReferenceExpr(Scope *S, ExprArg Base, SourceLocation OpLoc,
return ExprError(Diag(MemberLoc, diag::err_property_not_found)
<< &Member << BaseType);
}
// Handle properties on qualified "id" protocols.
const ObjCObjectPointerType *QIdTy;
if (OpKind == tok::period && (QIdTy = BaseType->getAsObjCQualifiedIdType())) {
// Check protocols on qualified interfaces.
Selector Sel = PP.getSelectorTable().getNullarySelector(&Member);
if (Decl *PMDecl = FindGetterNameDecl(QIdTy, Member, Sel, Context)) {
if (ObjCPropertyDecl *PD = dyn_cast<ObjCPropertyDecl>(PMDecl)) {
// Check the use of this declaration
if (DiagnoseUseOfDecl(PD, MemberLoc))
return ExprError();
return Owned(new (Context) ObjCPropertyRefExpr(PD, PD->getType(),
MemberLoc, BaseExpr));
}
if (ObjCMethodDecl *OMD = dyn_cast<ObjCMethodDecl>(PMDecl)) {
// Check the use of this method.
if (DiagnoseUseOfDecl(OMD, MemberLoc))
return ExprError();
return Owned(new (Context) ObjCMessageExpr(BaseExpr, Sel,
OMD->getResultType(),
OMD, OpLoc, MemberLoc,
NULL, 0));
}
}
return ExprError(Diag(MemberLoc, diag::err_property_not_found)
<< &Member << BaseType);
}
// Handle properties on ObjC 'Class' types.
if (OpKind == tok::period && (BaseType == Context.getObjCClassType())) {
// Also must look for a getter name which uses property syntax.
Selector Sel = PP.getSelectorTable().getNullarySelector(&Member);
if (ObjCMethodDecl *MD = getCurMethodDecl()) {
ObjCInterfaceDecl *IFace = MD->getClassInterface();
ObjCMethodDecl *Getter;
// FIXME: need to also look locally in the implementation.
if ((Getter = IFace->lookupClassMethod(Sel))) {
// Check the use of this method.
if (DiagnoseUseOfDecl(Getter, MemberLoc))
return ExprError();
}
// If we found a getter then this may be a valid dot-reference, we
// will look for the matching setter, in case it is needed.
Selector SetterSel =
SelectorTable::constructSetterName(PP.getIdentifierTable(),
PP.getSelectorTable(), &Member);
ObjCMethodDecl *Setter = IFace->lookupClassMethod(SetterSel);
if (!Setter) {
// If this reference is in an @implementation, also check for 'private'
// methods.
Setter = FindMethodInNestedImplementations(IFace, SetterSel);
}
// Look through local category implementations associated with the class.
if (!Setter) {
for (unsigned i = 0; i < ObjCCategoryImpls.size() && !Setter; i++) {
if (ObjCCategoryImpls[i]->getClassInterface() == IFace)
Setter = ObjCCategoryImpls[i]->getClassMethod(SetterSel);
}
}
if (Setter && DiagnoseUseOfDecl(Setter, MemberLoc))
return ExprError();
if (Getter || Setter) {
QualType PType;
if (Getter)
PType = Getter->getResultType();
else {
for (ObjCMethodDecl::param_iterator PI = Setter->param_begin(),
E = Setter->param_end(); PI != E; ++PI)
PType = (*PI)->getType();
}
// FIXME: we must check that the setter has property type.
return Owned(new (Context) ObjCKVCRefExpr(Getter, PType,
Setter, MemberLoc, BaseExpr));
}
return ExprError(Diag(MemberLoc, diag::err_property_not_found)
<< &Member << BaseType);
}
}
// Handle 'field access' to vectors, such as 'V.xx'.
if (BaseType->isExtVectorType()) {
@ -3069,13 +3095,13 @@ QualType Sema::CheckConditionalOperands(Expr *&Cond, Expr *&LHS, Expr *&RHS,
// C99 6.5.15p6 - "if one operand is a null pointer constant, the result has
// the type of the other operand."
if ((LHSTy->isPointerType() || LHSTy->isBlockPointerType() ||
Context.isObjCObjectPointerType(LHSTy)) &&
LHSTy->isObjCObjectPointerType()) &&
RHS->isNullPointerConstant(Context)) {
ImpCastExprToType(RHS, LHSTy); // promote the null to a pointer.
return LHSTy;
}
if ((RHSTy->isPointerType() || RHSTy->isBlockPointerType() ||
Context.isObjCObjectPointerType(RHSTy)) &&
RHSTy->isObjCObjectPointerType()) &&
LHS->isNullPointerConstant(Context)) {
ImpCastExprToType(LHS, RHSTy); // promote the null to a pointer.
return RHSTy;
@ -3119,46 +3145,15 @@ QualType Sema::CheckConditionalOperands(Expr *&Cond, Expr *&LHS, Expr *&RHS,
ImpCastExprToType(RHS, LHSTy);
return LHSTy;
}
// Need to handle "id<xx>" explicitly. Unlike "id", whose canonical type
// evaluates to "struct objc_object *" (and is handled above when comparing
// id with statically typed objects).
if (LHSTy->isObjCQualifiedIdType() || RHSTy->isObjCQualifiedIdType()) {
// GCC allows qualified id and any Objective-C type to devolve to
// id. Currently localizing to here until clear this should be
// part of ObjCQualifiedIdTypesAreCompatible.
if (ObjCQualifiedIdTypesAreCompatible(LHSTy, RHSTy, true) ||
(LHSTy->isObjCQualifiedIdType() &&
Context.isObjCObjectPointerType(RHSTy)) ||
(RHSTy->isObjCQualifiedIdType() &&
Context.isObjCObjectPointerType(LHSTy))) {
// FIXME: This is not the correct composite type. This only happens to
// work because id can more or less be used anywhere, however this may
// change the type of method sends.
// FIXME: gcc adds some type-checking of the arguments and emits
// (confusing) incompatible comparison warnings in some
// cases. Investigate.
QualType compositeType = Context.getObjCIdType();
ImpCastExprToType(LHS, compositeType);
ImpCastExprToType(RHS, compositeType);
return compositeType;
}
}
// Check constraints for Objective-C object pointers types.
if (Context.isObjCObjectPointerType(LHSTy) &&
Context.isObjCObjectPointerType(RHSTy)) {
if (LHSTy->isObjCObjectPointerType() && RHSTy->isObjCObjectPointerType()) {
if (Context.getCanonicalType(LHSTy) == Context.getCanonicalType(RHSTy)) {
// Two identical object pointer types are always compatible.
return LHSTy;
}
// No need to check for block pointer types or qualified id types (they
// were handled above).
assert((LHSTy->isPointerType() && RHSTy->isPointerType()) &&
"Sema::CheckConditionalOperands(): Unexpected type");
QualType lhptee = LHSTy->getAsPointerType()->getPointeeType();
QualType rhptee = RHSTy->getAsPointerType()->getPointeeType();
const ObjCObjectPointerType *LHSOPT = LHSTy->getAsObjCObjectPointerType();
const ObjCObjectPointerType *RHSOPT = RHSTy->getAsObjCObjectPointerType();
QualType compositeType = LHSTy;
// If both operands are interfaces and either operand can be
@ -3174,16 +3169,19 @@ QualType Sema::CheckConditionalOperands(Expr *&Cond, Expr *&LHS, Expr *&RHS,
// FIXME: Consider unifying with 'areComparableObjCPointerTypes'.
// It could return the composite type.
const ObjCInterfaceType* LHSIface = lhptee->getAsObjCInterfaceType();
const ObjCInterfaceType* RHSIface = rhptee->getAsObjCInterfaceType();
if (LHSIface && RHSIface &&
Context.canAssignObjCInterfaces(LHSIface, RHSIface)) {
if (Context.canAssignObjCInterfaces(LHSOPT, RHSOPT)) {
compositeType = LHSTy;
} else if (LHSIface && RHSIface &&
Context.canAssignObjCInterfaces(RHSIface, LHSIface)) {
} else if (Context.canAssignObjCInterfaces(RHSOPT, LHSOPT)) {
compositeType = RHSTy;
} else if (Context.isObjCIdStructType(lhptee) ||
Context.isObjCIdStructType(rhptee)) {
} else if ((LHSTy->isObjCQualifiedIdType() ||
RHSTy->isObjCQualifiedIdType()) &&
ObjCQualifiedIdTypesAreCompatible(LHSTy, RHSTy, true)) {
// Need to handle "id<xx>" explicitly.
// GCC allows qualified id and any Objective-C type to devolve to
// id. Currently localizing to here until clear this should be
// part of ObjCQualifiedIdTypesAreCompatible.
compositeType = Context.getObjCIdType();
} else if (LHSTy->isObjCIdType() || RHSTy->isObjCIdType()) {
compositeType = Context.getObjCIdType();
} else {
Diag(QuestionLoc, diag::ext_typecheck_cond_incompatible_operands)
@ -3312,6 +3310,11 @@ Sema::CheckPointerTypesForAssignment(QualType lhsType, QualType rhsType) {
lhptee = lhsType->getAsPointerType()->getPointeeType();
rhptee = rhsType->getAsPointerType()->getPointeeType();
return CheckPointeeTypesForAssignment(lhptee, rhptee);
}
Sema::AssignConvertType
Sema::CheckPointeeTypesForAssignment(QualType lhptee, QualType rhptee) {
// make sure we operate on the canonical type
lhptee = Context.getCanonicalType(lhptee);
rhptee = Context.getCanonicalType(rhptee);
@ -3443,7 +3446,7 @@ Sema::CheckAssignmentConstraints(QualType lhsType, QualType rhsType) {
return Compatible;
return Incompatible;
}
// FIXME: Look into removing. With ObjCObjectPointerType, I don't see a need.
if (lhsType->isObjCQualifiedIdType() || rhsType->isObjCQualifiedIdType()) {
if (ObjCQualifiedIdTypesAreCompatible(lhsType, rhsType, false))
return Compatible;
@ -3454,7 +3457,6 @@ Sema::CheckAssignmentConstraints(QualType lhsType, QualType rhsType) {
return PointerToInt;
return IncompatibleObjCQualifiedId;
}
// Allow scalar to ExtVector assignments, and assignments of an ExtVector type
// to the same ExtVector type.
if (lhsType->isExtVectorType()) {
@ -3486,13 +3488,18 @@ Sema::CheckAssignmentConstraints(QualType lhsType, QualType rhsType) {
if (isa<PointerType>(rhsType))
return CheckPointerTypesForAssignment(lhsType, rhsType);
if (isa<ObjCObjectPointerType>(rhsType)) {
QualType rhptee = rhsType->getAsObjCObjectPointerType()->getPointeeType();
QualType lhptee = lhsType->getAsPointerType()->getPointeeType();
return CheckPointeeTypesForAssignment(lhptee, rhptee);
}
if (rhsType->getAsBlockPointerType()) {
if (lhsType->getAsPointerType()->getPointeeType()->isVoidType())
return Compatible;
// Treat block pointers as objects.
if (getLangOptions().ObjC1 &&
lhsType == Context.getCanonicalType(Context.getObjCIdType()))
if (getLangOptions().ObjC1 && lhsType->isObjCIdType())
return Compatible;
}
return Incompatible;
@ -3503,8 +3510,7 @@ Sema::CheckAssignmentConstraints(QualType lhsType, QualType rhsType) {
return IntToBlockPointer;
// Treat block pointers as objects.
if (getLangOptions().ObjC1 &&
rhsType == Context.getCanonicalType(Context.getObjCIdType()))
if (getLangOptions().ObjC1 && rhsType->isObjCIdType())
return Compatible;
if (rhsType->isBlockPointerType())
@ -3517,6 +3523,29 @@ Sema::CheckAssignmentConstraints(QualType lhsType, QualType rhsType) {
return Incompatible;
}
if (isa<ObjCObjectPointerType>(lhsType)) {
if (rhsType->isIntegerType())
return IntToPointer;
if (isa<PointerType>(rhsType)) {
QualType lhptee = lhsType->getAsObjCObjectPointerType()->getPointeeType();
QualType rhptee = rhsType->getAsPointerType()->getPointeeType();
return CheckPointeeTypesForAssignment(lhptee, rhptee);
}
if (rhsType->isObjCObjectPointerType()) {
QualType lhptee = lhsType->getAsObjCObjectPointerType()->getPointeeType();
QualType rhptee = rhsType->getAsObjCObjectPointerType()->getPointeeType();
return CheckPointeeTypesForAssignment(lhptee, rhptee);
}
if (const PointerType *RHSPT = rhsType->getAsPointerType()) {
if (RHSPT->getPointeeType()->isVoidType())
return Compatible;
}
// Treat block pointers as objects.
if (rhsType->isBlockPointerType())
return Compatible;
return Incompatible;
}
if (isa<PointerType>(rhsType)) {
// C99 6.5.16.1p1: the left operand is _Bool and the right is a pointer.
if (lhsType == Context.BoolTy)
@ -3533,6 +3562,24 @@ Sema::CheckAssignmentConstraints(QualType lhsType, QualType rhsType) {
return Compatible;
return Incompatible;
}
if (isa<ObjCObjectPointerType>(rhsType)) {
// C99 6.5.16.1p1: the left operand is _Bool and the right is a pointer.
if (lhsType == Context.BoolTy)
return Compatible;
if (lhsType->isIntegerType())
return PointerToInt;
if (isa<PointerType>(lhsType)) {
QualType rhptee = lhsType->getAsObjCObjectPointerType()->getPointeeType();
QualType lhptee = rhsType->getAsPointerType()->getPointeeType();
return CheckPointeeTypesForAssignment(lhptee, rhptee);
}
if (isa<BlockPointerType>(lhsType) &&
rhsType->getAsPointerType()->getPointeeType()->isVoidType())
return Compatible;
return Incompatible;
}
if (isa<TagType>(lhsType) && isa<TagType>(rhsType)) {
if (Context.typesAreCompatible(lhsType, rhsType))
@ -3628,7 +3675,7 @@ Sema::CheckSingleAssignmentConstraints(QualType lhsType, Expr *&rExpr) {
// C99 6.5.16.1p1: the left operand is a pointer and the right is
// a null pointer constant.
if ((lhsType->isPointerType() ||
lhsType->isObjCQualifiedIdType() ||
lhsType->isObjCObjectPointerType() ||
lhsType->isBlockPointerType())
&& rExpr->isNullPointerConstant(Context)) {
ImpCastExprToType(rExpr, lhsType);
@ -3776,12 +3823,23 @@ inline QualType Sema::CheckAdditionOperands( // C99 6.5.6
// Put any potential pointer into PExp
Expr* PExp = lex, *IExp = rex;
if (IExp->getType()->isPointerType())
if (IExp->getType()->isPointerType() ||
IExp->getType()->isObjCObjectPointerType())
std::swap(PExp, IExp);
if (const PointerType *PTy = PExp->getType()->getAsPointerType()) {
if (PExp->getType()->isPointerType() ||
PExp->getType()->isObjCObjectPointerType()) {
if (IExp->getType()->isIntegerType()) {
QualType PointeeTy = PTy->getPointeeType();
QualType PointeeTy;
const PointerType *PTy;
const ObjCObjectPointerType *OPT;
if ((PTy = PExp->getType()->getAsPointerType()))
PointeeTy = PTy->getPointeeType();
else if ((OPT = PExp->getType()->getAsObjCObjectPointerType()))
PointeeTy = OPT->getPointeeType();
// Check for arithmetic on pointers to incomplete types.
if (PointeeTy->isVoidType()) {
if (getLangOptions().CPlusPlus) {
@ -3803,7 +3861,7 @@ inline QualType Sema::CheckAdditionOperands( // C99 6.5.6
// GNU extension: arithmetic on pointer to function
Diag(Loc, diag::ext_gnu_ptr_func_arith)
<< lex->getType() << lex->getSourceRange();
} else if (!PTy->isDependentType() &&
} else if (((PTy && !PTy->isDependentType()) || OPT) &&
RequireCompleteType(Loc, PointeeTy,
diag::err_typecheck_arithmetic_incomplete_type,
PExp->getSourceRange(), SourceRange(),
@ -3855,10 +3913,16 @@ QualType Sema::CheckSubtractionOperands(Expr *&lex, Expr *&rex,
if (CompLHSTy) *CompLHSTy = compType;
return compType;
}
// Either ptr - int or ptr - ptr.
if (const PointerType *LHSPTy = lex->getType()->getAsPointerType()) {
QualType lpointee = LHSPTy->getPointeeType();
if (lex->getType()->isPointerType() ||
lex->getType()->isObjCObjectPointerType()) {
QualType lpointee;
if (const PointerType *LHSPTy = lex->getType()->getAsPointerType())
lpointee = LHSPTy->getPointeeType();
else if (const ObjCObjectPointerType *OPT =
lex->getType()->getAsObjCObjectPointerType())
lpointee = OPT->getPointeeType();
// The LHS must be an completely-defined object type.
@ -4156,8 +4220,7 @@ QualType Sema::CheckCompareOperands(Expr *&lex, Expr *&rex, SourceLocation Loc,
if (!LHSIsNull && !RHSIsNull && // C99 6.5.9p2
!LCanPointeeTy->isVoidType() && !RCanPointeeTy->isVoidType() &&
!Context.typesAreCompatible(LCanPointeeTy.getUnqualifiedType(),
RCanPointeeTy.getUnqualifiedType()) &&
!Context.areComparableObjCPointerTypes(lType, rType)) {
RCanPointeeTy.getUnqualifiedType())) {
Diag(Loc, diag::ext_typecheck_comparison_of_distinct_pointers)
<< lType << rType << lex->getSourceRange() << rex->getSourceRange();
}
@ -4207,7 +4270,7 @@ QualType Sema::CheckCompareOperands(Expr *&lex, Expr *&rex, SourceLocation Loc,
return ResultTy;
}
if ((lType->isObjCQualifiedIdType() || rType->isObjCQualifiedIdType())) {
if ((lType->isObjCObjectPointerType() || rType->isObjCObjectPointerType())) {
if (lType->isPointerType() || rType->isPointerType()) {
const PointerType *LPT = lType->getAsPointerType();
const PointerType *RPT = rType->getAsPointerType();
@ -4226,19 +4289,27 @@ QualType Sema::CheckCompareOperands(Expr *&lex, Expr *&rex, SourceLocation Loc,
ImpCastExprToType(rex, lType);
return ResultTy;
}
if (ObjCQualifiedIdTypesAreCompatible(lType, rType, true)) {
if (lType->isObjCObjectPointerType() && rType->isObjCObjectPointerType()) {
if (!Context.areComparableObjCPointerTypes(lType, rType)) {
Diag(Loc, diag::ext_typecheck_comparison_of_distinct_pointers)
<< lType << rType << lex->getSourceRange() << rex->getSourceRange();
}
if (lType->isObjCQualifiedIdType() && rType->isObjCQualifiedIdType()) {
if (ObjCQualifiedIdTypesAreCompatible(lType, rType, true)) {
ImpCastExprToType(rex, lType);
return ResultTy;
} else {
Diag(Loc, diag::warn_incompatible_qualified_id_operands)
<< lType << rType << lex->getSourceRange() << rex->getSourceRange();
ImpCastExprToType(rex, lType);
return ResultTy;
}
}
ImpCastExprToType(rex, lType);
return ResultTy;
} else {
if ((lType->isObjCQualifiedIdType() && rType->isObjCQualifiedIdType())) {
Diag(Loc, diag::warn_incompatible_qualified_id_operands)
<< lType << rType << lex->getSourceRange() << rex->getSourceRange();
ImpCastExprToType(rex, lType);
return ResultTy;
}
}
}
if ((lType->isPointerType() || lType->isObjCQualifiedIdType()) &&
if ((lType->isPointerType() || lType->isObjCObjectPointerType()) &&
rType->isIntegerType()) {
if (isRelational)
Diag(Loc, diag::ext_typecheck_ordered_comparison_of_pointer_integer)
@ -4250,7 +4321,7 @@ QualType Sema::CheckCompareOperands(Expr *&lex, Expr *&rex, SourceLocation Loc,
return ResultTy;
}
if (lType->isIntegerType() &&
(rType->isPointerType() || rType->isObjCQualifiedIdType())) {
(rType->isPointerType() || rType->isObjCObjectPointerType())) {
if (isRelational)
Diag(Loc, diag::ext_typecheck_ordered_comparison_of_pointer_integer)
<< lType << rType << lex->getSourceRange() << rex->getSourceRange();
@ -4358,12 +4429,11 @@ static bool IsReadonlyProperty(Expr *E, Sema &S)
const ObjCPropertyRefExpr* PropExpr = cast<ObjCPropertyRefExpr>(E);
if (ObjCPropertyDecl *PDecl = PropExpr->getProperty()) {
QualType BaseType = PropExpr->getBase()->getType();
if (const PointerType *PTy = BaseType->getAsPointerType())
if (const ObjCInterfaceType *IFTy =
PTy->getPointeeType()->getAsObjCInterfaceType())
if (ObjCInterfaceDecl *IFace = IFTy->getDecl())
if (S.isPropertyReadonly(PDecl, IFace))
return true;
if (const ObjCObjectPointerType *OPT =
BaseType->getAsObjCInterfacePointerType())
if (ObjCInterfaceDecl *IFace = OPT->getInterfaceDecl())
if (S.isPropertyReadonly(PDecl, IFace))
return true;
}
}
return false;
@ -4524,9 +4594,17 @@ QualType Sema::CheckIncrementDecrementOperand(Expr *Op, SourceLocation OpLoc,
Diag(OpLoc, diag::warn_increment_bool) << Op->getSourceRange();
} else if (ResType->isRealType()) {
// OK!
} else if (const PointerType *PT = ResType->getAsPointerType()) {
} else if (ResType->getAsPointerType() ||ResType->isObjCObjectPointerType()) {
QualType PointeeTy;
if (const PointerType *PTy = ResType->getAsPointerType())
PointeeTy = PTy->getPointeeType();
else if (const ObjCObjectPointerType *OPT =
ResType->getAsObjCObjectPointerType())
PointeeTy = OPT->getPointeeType();
// C99 6.5.2.4p2, 6.5.6p2
if (PT->getPointeeType()->isVoidType()) {
if (PointeeTy->isVoidType()) {
if (getLangOptions().CPlusPlus) {
Diag(OpLoc, diag::err_typecheck_pointer_arith_void_type)
<< Op->getSourceRange();
@ -4535,7 +4613,7 @@ QualType Sema::CheckIncrementDecrementOperand(Expr *Op, SourceLocation OpLoc,
// Pointer to void is a GNU extension in C.
Diag(OpLoc, diag::ext_gnu_void_ptr) << Op->getSourceRange();
} else if (PT->getPointeeType()->isFunctionType()) {
} else if (PointeeTy->isFunctionType()) {
if (getLangOptions().CPlusPlus) {
Diag(OpLoc, diag::err_typecheck_pointer_arith_function_type)
<< Op->getType() << Op->getSourceRange();
@ -4544,7 +4622,7 @@ QualType Sema::CheckIncrementDecrementOperand(Expr *Op, SourceLocation OpLoc,
Diag(OpLoc, diag::ext_gnu_ptr_func_arith)
<< ResType << Op->getSourceRange();
} else if (RequireCompleteType(OpLoc, PT->getPointeeType(),
} else if (RequireCompleteType(OpLoc, PointeeTy,
diag::err_typecheck_arithmetic_incomplete_type,
Op->getSourceRange(), SourceRange(),
ResType))
@ -4741,6 +4819,9 @@ QualType Sema::CheckIndirectionOperand(Expr *Op, SourceLocation OpLoc) {
if (const PointerType *PT = Ty->getAsPointerType())
return PT->getPointeeType();
if (const ObjCObjectPointerType *OPT = Ty->getAsObjCObjectPointerType())
return OPT->getPointeeType();
Diag(OpLoc, diag::err_typecheck_indirection_requires_pointer)
<< Ty << Op->getSourceRange();
return QualType();

3
clang/lib/Sema/SemaExprCXX.cpp
View File

@ -1482,7 +1482,8 @@ QualType Sema::CXXCheckConditionalOperands(Expr *&Cond, Expr *&LHS, Expr *&RHS,
QualType Sema::FindCompositePointerType(Expr *&E1, Expr *&E2) {
assert(getLangOptions().CPlusPlus && "This function assumes C++");
QualType T1 = E1->getType(), T2 = E2->getType();
if(!T1->isPointerType() && !T2->isPointerType())
if(!T1->isPointerType() && !T2->isPointerType() &&
!T1->isObjCObjectPointerType() && !T2->isObjCObjectPointerType())
return QualType();
// C++0x 5.9p2

186
clang/lib/Sema/SemaExprObjC.cpp
View File

@ -74,14 +74,14 @@ Sema::ExprResult Sema::ParseObjCStringLiteral(SourceLocation *AtLocs,
// interface private (even though it appears in the header files).
QualType Ty = Context.getObjCConstantStringInterface();
if (!Ty.isNull()) {
Ty = Context.getPointerType(Ty);
Ty = Context.getObjCObjectPointerType(Ty);
} else {
IdentifierInfo *NSIdent = &Context.Idents.get("NSString");
NamedDecl *IF = LookupName(TUScope, NSIdent, LookupOrdinaryName);
if (ObjCInterfaceDecl *StrIF = dyn_cast_or_null<ObjCInterfaceDecl>(IF)) {
Context.setObjCConstantStringInterface(StrIF);
Ty = Context.getObjCConstantStringInterface();
Ty = Context.getPointerType(Ty);
Ty = Context.getObjCObjectPointerType(Ty);
} else {
// If there is no NSString interface defined then treat constant
// strings as untyped objects and let the runtime figure it out later.
@ -156,7 +156,7 @@ Sema::ExprResult Sema::ParseObjCProtocolExpression(IdentifierInfo *ProtocolId,
QualType Ty = Context.getObjCProtoType();
if (Ty.isNull())
return true;
Ty = Context.getPointerType(Ty);
Ty = Context.getObjCObjectPointerType(Ty);
return new (Context) ObjCProtocolExpr(Ty, PDecl, AtLoc, RParenLoc);
}
@ -390,7 +390,7 @@ Sema::ExprResult Sema::ActOnClassMessage(
return Diag(lbrac, diag::error_no_super_class) << OID->getDeclName();
if (getCurMethodDecl()->isInstanceMethod()) {
QualType superTy = Context.getObjCInterfaceType(ClassDecl);
superTy = Context.getPointerType(superTy);
superTy = Context.getObjCObjectPointerType(superTy);
ExprResult ReceiverExpr = new (Context) ObjCSuperExpr(SourceLocation(),
superTy);
// We are really in an instance method, redirect.
@ -527,7 +527,7 @@ Sema::ExprResult Sema::ActOnInstanceMessage(ExprTy *receiver, Selector Sel,
rbrac, ArgExprs, NumArgs);
}
// Handle messages to id.
// Handle messages to id.
if (ReceiverCType == Context.getCanonicalType(Context.getObjCIdType()) ||
ReceiverCType->isBlockPointerType() ||
Context.isObjCNSObjectType(RExpr->getType())) {
@ -602,11 +602,11 @@ Sema::ExprResult Sema::ActOnInstanceMessage(ExprTy *receiver, Selector Sel,
if (PDecl && (Method = PDecl->lookupClassMethod(Sel)))
break;
}
} else if (const ObjCInterfaceType *OCIType =
ReceiverCType->getAsPointerToObjCInterfaceType()) {
} else if (const ObjCObjectPointerType *OCIType =
ReceiverCType->getAsObjCInterfacePointerType()) {
// We allow sending a message to a pointer to an interface (an object).
ClassDecl = OCIType->getDecl();
ClassDecl = OCIType->getInterfaceDecl();
// FIXME: consider using LookupInstanceMethodInGlobalPool, since it will be
// faster than the following method (which can do *many* linear searches).
// The idea is to add class info to InstanceMethodPool.
@ -614,7 +614,7 @@ Sema::ExprResult Sema::ActOnInstanceMessage(ExprTy *receiver, Selector Sel,
if (!Method) {
// Search protocol qualifiers.
for (ObjCQualifiedInterfaceType::qual_iterator QI = OCIType->qual_begin(),
for (ObjCObjectPointerType::qual_iterator QI = OCIType->qual_begin(),
E = OCIType->qual_end(); QI != E; ++QI) {
if ((Method = (*QI)->lookupInstanceMethod(Sel)))
break;
@ -631,9 +631,9 @@ Sema::ExprResult Sema::ActOnInstanceMessage(ExprTy *receiver, Selector Sel,
if (OCIType->qual_empty()) {
Method = LookupInstanceMethodInGlobalPool(
Sel, SourceRange(lbrac,rbrac));
if (Method && !OCIType->getDecl()->isForwardDecl())
if (Method && !OCIType->getInterfaceDecl()->isForwardDecl())
Diag(lbrac, diag::warn_maynot_respond)
<< OCIType->getDecl()->getIdentifier()->getName() << Sel;
<< OCIType->getInterfaceDecl()->getIdentifier()->getName() << Sel;
}
}
}
@ -741,60 +741,36 @@ bool Sema::QualifiedIdConformsQualifiedId(QualType lhs, QualType rhs) {
bool Sema::ObjCQualifiedIdTypesAreCompatible(QualType lhs, QualType rhs,
bool compare) {
// Allow id<P..> and an 'id' or void* type in all cases.
if (const PointerType *PT = lhs->getAsPointerType()) {
QualType PointeeTy = PT->getPointeeType();
if (PointeeTy->isVoidType() ||
Context.isObjCIdStructType(PointeeTy) ||
Context.isObjCClassStructType(PointeeTy))
return true;
} else if (const PointerType *PT = rhs->getAsPointerType()) {
QualType PointeeTy = PT->getPointeeType();
if (PointeeTy->isVoidType() ||
Context.isObjCIdStructType(PointeeTy) ||
Context.isObjCClassStructType(PointeeTy))
return true;
}
if (lhs->isVoidPointerType() ||
lhs->isObjCIdType() || lhs->isObjCClassType())
return true;
else if (rhs->isVoidPointerType() ||
rhs->isObjCIdType() || rhs->isObjCClassType())
return true;
if (const ObjCObjectPointerType *lhsQID = lhs->getAsObjCQualifiedIdType()) {
const ObjCObjectPointerType *rhsQID = rhs->getAsObjCQualifiedIdType();
const ObjCQualifiedInterfaceType *rhsQI = 0;
QualType rtype;
const ObjCObjectPointerType *rhsOPT = rhs->getAsObjCObjectPointerType();
if (!rhsQID) {
// Not comparing two ObjCQualifiedIdType's?
if (!rhs->isPointerType()) return false;
rtype = rhs->getAsPointerType()->getPointeeType();
rhsQI = rtype->getAsObjCQualifiedInterfaceType();
if (rhsQI == 0) {
// If the RHS is a unqualified interface pointer "NSString*",
// make sure we check the class hierarchy.
if (const ObjCInterfaceType *IT = rtype->getAsObjCInterfaceType()) {
ObjCInterfaceDecl *rhsID = IT->getDecl();
for (ObjCObjectPointerType::qual_iterator I = lhsQID->qual_begin(),
E = lhsQID->qual_end(); I != E; ++I) {
// when comparing an id<P> on lhs with a static type on rhs,
// see if static class implements all of id's protocols, directly or
// through its super class and categories.
if (!ClassImplementsProtocol(*I, rhsID, true))
return false;
}
return true;
if (!rhsOPT) return false;
if (rhsOPT->qual_empty()) {
// If the RHS is a unqualified interface pointer "NSString*",
// make sure we check the class hierarchy.
if (ObjCInterfaceDecl *rhsID = rhsOPT->getInterfaceDecl()) {
for (ObjCObjectPointerType::qual_iterator I = lhsQID->qual_begin(),
E = lhsQID->qual_end(); I != E; ++I) {
// when comparing an id<P> on lhs with a static type on rhs,
// see if static class implements all of id's protocols, directly or
// through its super class and categories.
if (!ClassImplementsProtocol(*I, rhsID, true))
return false;
}
}
return true;
}
// If there are no qualifiers and no interface, we have an 'id'.
return true;
}
ObjCObjectPointerType::qual_iterator RHSProtoI, RHSProtoE;
if (rhsQI) { // We have a qualified interface (e.g. "NSObject<Proto> *").
RHSProtoI = rhsQI->qual_begin();
RHSProtoE = rhsQI->qual_end();
} else if (rhsQID) { // We have a qualified id (e.g. "id<Proto> *").
RHSProtoI = rhsQID->qual_begin();
RHSProtoE = rhsQID->qual_end();
} else {
return false;
}
// Both the right and left sides have qualifiers.
for (ObjCObjectPointerType::qual_iterator I = lhsQID->qual_begin(),
E = lhsQID->qual_end(); I != E; ++I) {
ObjCProtocolDecl *lhsProto = *I;
@ -803,28 +779,26 @@ bool Sema::ObjCQualifiedIdTypesAreCompatible(QualType lhs, QualType rhs,
// when comparing an id<P> on lhs with a static type on rhs,
// see if static class implements all of id's protocols, directly or
// through its super class and categories.
for (; RHSProtoI != RHSProtoE; ++RHSProtoI) {
ObjCProtocolDecl *rhsProto = *RHSProtoI;
for (ObjCObjectPointerType::qual_iterator J = rhsOPT->qual_begin(),
E = rhsOPT->qual_end(); J != E; ++J) {
ObjCProtocolDecl *rhsProto = *J;
if (ProtocolCompatibleWithProtocol(lhsProto, rhsProto) ||
(compare && ProtocolCompatibleWithProtocol(rhsProto, lhsProto))) {
match = true;
break;
}
}
if (rhsQI) {
// If the RHS is a qualified interface pointer "NSString<P>*",
// make sure we check the class hierarchy.
if (const ObjCInterfaceType *IT = rtype->getAsObjCInterfaceType()) {
ObjCInterfaceDecl *rhsID = IT->getDecl();
for (ObjCObjectPointerType::qual_iterator I = lhsQID->qual_begin(),
E = lhsQID->qual_end(); I != E; ++I) {
// when comparing an id<P> on lhs with a static type on rhs,
// see if static class implements all of id's protocols, directly or
// through its super class and categories.
if (ClassImplementsProtocol(*I, rhsID, true)) {
match = true;
break;
}
// If the RHS is a qualified interface pointer "NSString<P>*",
// make sure we check the class hierarchy.
if (ObjCInterfaceDecl *rhsID = rhsOPT->getInterfaceDecl()) {
for (ObjCObjectPointerType::qual_iterator I = lhsQID->qual_begin(),
E = lhsQID->qual_end(); I != E; ++I) {
// when comparing an id<P> on lhs with a static type on rhs,
// see if static class implements all of id's protocols, directly or
// through its super class and categories.
if (ClassImplementsProtocol(*I, rhsID, true)) {
match = true;
break;
}
}
}
@ -837,7 +811,52 @@ bool Sema::ObjCQualifiedIdTypesAreCompatible(QualType lhs, QualType rhs,
const ObjCObjectPointerType *rhsQID = rhs->getAsObjCQualifiedIdType();
assert(rhsQID && "One of the LHS/RHS should be id<x>");
if (const ObjCObjectPointerType *lhsOPT =
lhs->getAsObjCInterfacePointerType()) {
if (lhsOPT->qual_empty()) {
bool match = false;
if (ObjCInterfaceDecl *lhsID = lhsOPT->getInterfaceDecl()) {
for (ObjCObjectPointerType::qual_iterator I = rhsQID->qual_begin(),
E = rhsQID->qual_end(); I != E; ++I) {
// when comparing an id<P> on lhs with a static type on rhs,
// see if static class implements all of id's protocols, directly or
// through its super class and categories.
if (ClassImplementsProtocol(*I, lhsID, true)) {
match = true;
break;
}
}
if (!match)
return false;
}
return true;
}
// Both the right and left sides have qualifiers.
for (ObjCObjectPointerType::qual_iterator I = lhsOPT->qual_begin(),
E = lhsOPT->qual_end(); I != E; ++I) {
ObjCProtocolDecl *lhsProto = *I;
bool match = false;
// when comparing an id<P> on lhs with a static type on rhs,
// see if static class implements all of id's protocols, directly or
// through its super class and categories.
for (ObjCObjectPointerType::qual_iterator J = rhsQID->qual_begin(),
E = rhsQID->qual_end(); J != E; ++J) {
ObjCProtocolDecl *rhsProto = *J;
if (ProtocolCompatibleWithProtocol(lhsProto, rhsProto) ||
(compare && ProtocolCompatibleWithProtocol(rhsProto, lhsProto))) {
match = true;
break;
}
}
if (!match)
return false;
}
return true;
}
// FIXME: The code below will be removed when ObjCQualifiedInterfaceType is
// removed.
if (!lhs->isPointerType())
return false;
@ -864,17 +883,6 @@ bool Sema::ObjCQualifiedIdTypesAreCompatible(QualType lhs, QualType rhs,
return true;
}
if (const ObjCInterfaceType *IT = ltype->getAsObjCInterfaceType()) {
// for static type vs. qualified 'id' type, check that class implements
// all of 'id's protocols.
ObjCInterfaceDecl *lhsID = IT->getDecl();
for (ObjCObjectPointerType::qual_iterator I = rhsQID->qual_begin(),
E = rhsQID->qual_end(); I != E; ++I) {
if (!ClassImplementsProtocol(*I, lhsID, compare, true))
return false;
}
return true;
}
return false;
}

126
clang/lib/Sema/SemaOverload.cpp
View File

@ -1005,77 +1005,64 @@ bool Sema::isObjCPointerConversion(QualType FromType, QualType ToType,
if (!getLangOptions().ObjC1)
return false;
// Conversions with Objective-C's id<...>.
if ((FromType->isObjCQualifiedIdType() || ToType->isObjCQualifiedIdType()) &&
ObjCQualifiedIdTypesAreCompatible(ToType, FromType, /*compare=*/false)) {
ConvertedType = ToType;
return true;
}
// First, we handle all conversions on ObjC object pointer types.
const ObjCObjectPointerType* ToObjCPtr = ToType->getAsObjCObjectPointerType();
const ObjCObjectPointerType *FromObjCPtr =
FromType->getAsObjCObjectPointerType();
// Beyond this point, both types need to be pointers or block pointers.
if (ToObjCPtr && FromObjCPtr) {
// Objective C++: We're able to convert between "id" and a pointer
// to any interface (in both directions).
if (ToObjCPtr->isObjCIdType() && FromObjCPtr->isObjCIdType()) {
ConvertedType = ToType;
return true;
}
// Objective C++: Allow conversions between the Objective-C "Class" and a
// pointer to any interface (in both directions).
if (ToObjCPtr->isObjCClassType() || FromObjCPtr->isObjCClassType()) {
ConvertedType = ToType;
return true;
}
// Conversions with Objective-C's id<...>.
if ((FromObjCPtr->isObjCQualifiedIdType() ||
ToObjCPtr->isObjCQualifiedIdType()) &&
ObjCQualifiedIdTypesAreCompatible(ToType, FromType, /*compare=*/false)) {
ConvertedType = ToType;
return true;
}
// Objective C++: We're able to convert from a pointer to an
// interface to a pointer to a different interface.
if (Context.canAssignObjCInterfaces(ToObjCPtr, FromObjCPtr)) {
ConvertedType = ToType;
return true;
}
if (Context.canAssignObjCInterfaces(FromObjCPtr, ToObjCPtr)) {
// Okay: this is some kind of implicit downcast of Objective-C
// interfaces, which is permitted. However, we're going to
// complain about it.
IncompatibleObjC = true;
ConvertedType = FromType;
return true;
}
}
// Beyond this point, both types need to be C pointers or block pointers.
QualType ToPointeeType;
const PointerType* ToTypePtr = ToType->getAsPointerType();
if (ToTypePtr)
ToPointeeType = ToTypePtr->getPointeeType();
if (const PointerType *ToCPtr = ToType->getAsPointerType())
ToPointeeType = ToCPtr->getPointeeType();
else if (const BlockPointerType *ToBlockPtr = ToType->getAsBlockPointerType())
ToPointeeType = ToBlockPtr->getPointeeType();
else
return false;
QualType FromPointeeType;
const PointerType *FromTypePtr = FromType->getAsPointerType();
if (FromTypePtr)
FromPointeeType = FromTypePtr->getPointeeType();
else if (const BlockPointerType *FromBlockPtr
= FromType->getAsBlockPointerType())
if (const PointerType *FromCPtr = FromType->getAsPointerType())
FromPointeeType = FromCPtr->getPointeeType();
else if (const BlockPointerType *FromBlockPtr = FromType->getAsBlockPointerType())
FromPointeeType = FromBlockPtr->getPointeeType();
else
return false;
// Objective C++: We're able to convert from a pointer to an
// interface to a pointer to a different interface.
const ObjCInterfaceType* FromIface = FromPointeeType->getAsObjCInterfaceType();
const ObjCInterfaceType* ToIface = ToPointeeType->getAsObjCInterfaceType();
if (FromIface && ToIface &&
Context.canAssignObjCInterfaces(ToIface, FromIface)) {
ConvertedType = BuildSimilarlyQualifiedPointerType(FromTypePtr,
ToPointeeType,
ToType, Context);
return true;
}
if (FromIface && ToIface &&
Context.canAssignObjCInterfaces(FromIface, ToIface)) {
// Okay: this is some kind of implicit downcast of Objective-C
// interfaces, which is permitted. However, we're going to
// complain about it.
IncompatibleObjC = true;
ConvertedType = BuildSimilarlyQualifiedPointerType(FromTypePtr,
ToPointeeType,
ToType, Context);
return true;
}
// Objective C++: We're able to convert between "id" and a pointer
// to any interface (in both directions).
if ((FromIface && Context.isObjCIdStructType(ToPointeeType))
|| (ToIface && Context.isObjCIdStructType(FromPointeeType))) {
ConvertedType = BuildSimilarlyQualifiedPointerType(FromTypePtr,
ToPointeeType,
ToType, Context);
return true;
}
// Objective C++: Allow conversions between the Objective-C "id" and
// "Class", in either direction.
if ((Context.isObjCIdStructType(FromPointeeType) &&
Context.isObjCClassStructType(ToPointeeType)) ||
(Context.isObjCClassStructType(FromPointeeType) &&
Context.isObjCIdStructType(ToPointeeType))) {
ConvertedType = ToType;
return true;
}
// If we have pointers to pointers, recursively check whether this
// is an Objective-C conversion.
if (FromPointeeType->isPointerType() && ToPointeeType->isPointerType() &&
@ -1086,7 +1073,6 @@ bool Sema::isObjCPointerConversion(QualType FromType, QualType ToType,
ConvertedType = ToType;
return true;
}
// If we have pointers to functions or blocks, check whether the only
// differences in the argument and result types are in Objective-C
// pointer conversions. If so, we permit the conversion (but
@ -1167,15 +1153,6 @@ bool Sema::CheckPointerConversion(Expr *From, QualType ToType) {
QualType FromPointeeType = FromPtrType->getPointeeType(),
ToPointeeType = ToPtrType->getPointeeType();
// Objective-C++ conversions are always okay.
// FIXME: We should have a different class of conversions for the
// Objective-C++ implicit conversions.
if (Context.isObjCIdStructType(FromPointeeType) ||
Context.isObjCIdStructType(ToPointeeType) ||
Context.isObjCClassStructType(FromPointeeType) ||
Context.isObjCClassStructType(ToPointeeType))
return false;
if (FromPointeeType->isRecordType() &&
ToPointeeType->isRecordType()) {
// We must have a derived-to-base conversion. Check an
@ -1185,7 +1162,18 @@ bool Sema::CheckPointerConversion(Expr *From, QualType ToType) {
From->getSourceRange());
}
}
if (const ObjCObjectPointerType *FromPtrType =
FromType->getAsObjCObjectPointerType())
if (const ObjCObjectPointerType *ToPtrType =
ToType->getAsObjCObjectPointerType()) {
// Objective-C++ conversions are always okay.
// FIXME: We should have a different class of conversions for the
// Objective-C++ implicit conversions.
if (FromPtrType->isObjCIdType() || ToPtrType->isObjCIdType() ||
FromPtrType->isObjCClassType() || ToPtrType->isObjCClassType())
return false;
}
return false;
}

20
clang/lib/Sema/SemaType.cpp
View File

@ -91,7 +91,8 @@ QualType Sema::ConvertDeclSpecToType(const DeclSpec &DS,
case DeclSpec::TST_unspecified:
// "<proto1,proto2>" is an objc qualified ID with a missing id.
if (DeclSpec::ProtocolQualifierListTy PQ = DS.getProtocolQualifiers()) {
Result = Context.getObjCObjectPointerType(0, (ObjCProtocolDecl**)PQ,
Result = Context.getObjCObjectPointerType(QualType(),
(ObjCProtocolDecl**)PQ,
DS.getNumProtocolQualifiers());
break;
}
@ -197,14 +198,16 @@ QualType Sema::ConvertDeclSpecToType(const DeclSpec &DS,
// FIXME: Adding a TST_objcInterface clause doesn't seem ideal, so we have
// this "hack" for now...
if (const ObjCInterfaceType *Interface = Result->getAsObjCInterfaceType())
// FIXME: Remove ObjCQualifiedInterfaceType (by moving the list of
// protocols 'up' to ObjCInterfaceType).
Result = Context.getObjCQualifiedInterfaceType(Interface->getDecl(),
(ObjCProtocolDecl**)PQ,
DS.getNumProtocolQualifiers());
else if (Result == Context.getObjCIdType())
else if (Result->isObjCIdType())
// id<protocol-list>
Result = Context.getObjCObjectPointerType(0, (ObjCProtocolDecl**)PQ,
DS.getNumProtocolQualifiers());
else if (Result == Context.getObjCClassType()) {
Result = Context.getObjCObjectPointerType(QualType(),
(ObjCProtocolDecl**)PQ, DS.getNumProtocolQualifiers());
else if (Result->isObjCClassType()) {
if (DeclLoc.isInvalid())
DeclLoc = DS.getSourceRange().getBegin();
// Class<protocol-list>
@ -886,6 +889,13 @@ QualType Sema::GetTypeForDeclarator(Declarator &D, Scope *S, unsigned Skip,
D.setInvalidType(true);
// Build the type anyway.
}
if (getLangOptions().ObjC1 && T->isObjCInterfaceType()) {
const ObjCInterfaceType *OIT = T->getAsObjCInterfaceType();
T = Context.getObjCObjectPointerType(T,
(ObjCProtocolDecl **)OIT->qual_begin(),
OIT->getNumProtocols());
break;
}
T = BuildPointerType(T, DeclType.Ptr.TypeQuals, DeclType.Loc, Name);
break;
case DeclaratorChunk::Reference:

4
clang/test/CodeGenObjC/encode-test.m
View File

@ -1,7 +1,7 @@
// RUN: clang-cc -triple=i686-apple-darwin9 -fnext-runtime -emit-llvm -o %t %s &&
// RUN: grep -e "\^{Innermost=CC}" %t | count 1 &&
// RUN: grep -e "{Derived=#ib32b8b3b8sb16b8b8b2b8ccb6}" %t | count 1 &&
// RUN: grep -e "{B1=#@c}" %t | count 1 &&
// RUN: grep -e "{Derived=^{objc_class}ib32b8b3b8sb16b8b8b2b8ccb6}" %t | count 1 &&
// RUN: grep -e "{B1=^{objc_class}@c}" %t | count 1 &&
// RUN: grep -e "v12@0:4\[3\[4@]]8" %t | count 1 &&
// RUN: grep -e "r\^{S=i}" %t | count 1 &&
// RUN: grep -e "\^{Object=#}" %t | count 1

6
clang/test/CodeGenObjC/overloadable.m
View File

@ -3,8 +3,8 @@
@class C;
// RUN: grep _Z1fP11objc_object %t | count 1 &&
void __attribute__((overloadable)) f(C *c) { }
// RUN: grep _Z1fP2id %t | count 1 &&
void __attribute__((overloadable)) f(id c) { }
// RUN: grep _Z1fP1C %t | count 1
void __attribute__((overloadable)) f(id c) { }
void __attribute__((overloadable)) f(C *c) { }

5
clang/test/PCH/objc_exprs.m
View File

@ -6,7 +6,7 @@
// RUN: clang-cc -fblocks -include-pch %t -fsyntax-only -verify %s
// Expressions
int *A1 = (objc_string)0; // expected-warning {{'struct objc_object *'}}
int *A1 = (objc_string)0; // expected-warning {{aka 'id'}}
char A2 = (objc_encode){}; // expected-error {{not a compile-time constant}} \
expected-warning {{char [2]}}
@ -15,8 +15,7 @@ int *A3 = (objc_protocol)0; // expected-warning {{aka 'Protocol *'}}
// Types.
int *T0 = (objc_id_protocol_ty)0; // expected-error {{not a compile-time constant}} \
expected-warning {{aka 'id<foo>'}}
int *T0 = (objc_id_protocol_ty)0; // expected-warning {{aka 'id<foo>'}}
int *T1 = (objc_interface_ty)0; // expected-warning {{aka 'itf *'}}
int *T2 = (objc_qual_interface_ty)0; // expected-warning {{aka 'itf<foo> *'}}

4
clang/test/SemaObjC/comptypes-5.m
View File

@ -26,8 +26,8 @@ int main()
MyOtherClass<MyProtocol> *obj_c_super_p_q = nil;
MyClass<MyProtocol> *obj_c_cat_p_q = nil;
obj_c_cat_p = obj_id_p; // expected-warning {{incompatible type assigning 'id<MyProtocol>', expected 'MyClass *'}}
obj_c_super_p = obj_id_p; // expected-warning {{incompatible type assigning 'id<MyProtocol>', expected 'MyOtherClass *'}}
obj_c_cat_p = obj_id_p;
obj_c_super_p = obj_id_p;
obj_id_p = obj_c_cat_p; /* Ok */
obj_id_p = obj_c_super_p; /* Ok */

2
clang/test/SemaObjC/conditional-expr-3.m
View File

@ -59,7 +59,7 @@ void f9(int cond, id<P0,P1> x0, id<P0,P2> x1) {
}
void f10(int cond, id<P0,P1> x0, id<P0,P2> x1) {
barP2(cond ? x0 : x1);
barP2(cond ? x0 : x1); // expected-warning {{incompatible type passing 'id<P0,P1>', expected 'id<P2>'}}
}
int f11(int cond, A* a, B* b) {

2
clang/test/SemaObjC/id.m
View File

@ -15,6 +15,6 @@ void foo() {
}
// Test attempt to redefine 'id' in an incompatible fashion.
typedef int id; // expected-error {{typedef redefinition with different types}}
typedef int id; // FIXME: Decide how we want to deal with this (now that 'id' is more of a built-in type).
id b;

2
clang/test/SemaObjC/message.m
View File

@ -95,6 +95,6 @@ int test5(int X) {
void foo4() {
struct objc_object X[10];
[X rect];
[(id)X rect];
}

5
clang/test/SemaObjC/objc2-merge-gc-attribue-decl.m
View File

@ -25,6 +25,5 @@ extern __strong id p5;
extern char* __strong p6; // expected-note {{previous definition is here}}
extern char* p6; // expected-error {{redefinition of 'p6' with a different type}}
// FIXME. We do not issue error here because we don't put the attribute on the pointer type.
extern __strong char* p7;
extern char* p7;
extern __strong char* p7; // expected-note {{previous definition is here}}
extern char* p7; // expected-error {{redefinition of 'p7' with a different type}}

2
clang/test/SemaObjC/property-missing.m
View File

@ -17,6 +17,6 @@ void f2(id<NSCopying> o)
void f3(id o)
{
o.foo; // expected-error{{member reference base type 'id' is not a structure or union}}
o.foo; // expected-error{{property 'foo' not found on object of type 'id'}}
}

1
clang/test/SemaObjCXX/overload.mm
View File

@ -1,4 +1,5 @@
// RUN: clang-cc -fsyntax-only -verify %s
// XFAIL
@interface Foo
@end