Class continuation now has its own property ast for
those declared in it. This is to allow duplicate
property diagnostics for properties declared in class extensions
multiple times (radar 7629420) and for future use.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@96276 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaDeclObjC.cpp b/lib/Sema/SemaDeclObjC.cpp
index af51fb1..1e9b56a 100644
--- a/lib/Sema/SemaDeclObjC.cpp
+++ b/lib/Sema/SemaDeclObjC.cpp
@@ -446,18 +446,19 @@
// Category
ObjCCategoryDecl *CatDecl = static_cast<ObjCCategoryDecl*>(CDecl);
assert (CatDecl && "MatchOneProtocolPropertiesInClass");
- for (ObjCProtocolDecl::prop_iterator P = PDecl->prop_begin(),
- E = PDecl->prop_end(); P != E; ++P) {
- ObjCPropertyDecl *Pr = (*P);
- ObjCCategoryDecl::prop_iterator CP, CE;
- // Is this property already in category's list of properties?
- for (CP = CatDecl->prop_begin(), CE = CatDecl->prop_end(); CP != CE; ++CP)
- if ((*CP)->getIdentifier() == Pr->getIdentifier())
- break;
- if (CP != CE)
- // Property protocol already exist in class. Diagnose any mismatch.
- DiagnosePropertyMismatch((*CP), Pr, PDecl->getIdentifier());
- }
+ if (!CatDecl->IsClassExtension())
+ for (ObjCProtocolDecl::prop_iterator P = PDecl->prop_begin(),
+ E = PDecl->prop_end(); P != E; ++P) {
+ ObjCPropertyDecl *Pr = (*P);
+ ObjCCategoryDecl::prop_iterator CP, CE;
+ // Is this property already in category's list of properties?
+ for (CP = CatDecl->prop_begin(), CE = CatDecl->prop_end(); CP != CE; ++CP)
+ if ((*CP)->getIdentifier() == Pr->getIdentifier())
+ break;
+ if (CP != CE)
+ // Property protocol already exist in class. Diagnose any mismatch.
+ DiagnosePropertyMismatch((*CP), Pr, PDecl->getIdentifier());
+ }
return;
}
for (ObjCProtocolDecl::prop_iterator P = PDecl->prop_begin(),
@@ -596,44 +597,59 @@
unsigned NumProtoRefs,
const SourceLocation *ProtoLocs,
SourceLocation EndProtoLoc) {
- ObjCCategoryDecl *CDecl =
- ObjCCategoryDecl::Create(Context, CurContext, AtInterfaceLoc, ClassLoc,
- CategoryLoc, CategoryName);
- // FIXME: PushOnScopeChains?
- CurContext->addDecl(CDecl);
-
+ ObjCCategoryDecl *CDecl = 0;
ObjCInterfaceDecl *IDecl = getObjCInterfaceDecl(ClassName, ClassLoc);
- /// Check that class of this category is already completely declared.
- if (!IDecl || IDecl->isForwardDecl()) {
- CDecl->setInvalidDecl();
- Diag(ClassLoc, diag::err_undef_interface) << ClassName;
- return DeclPtrTy::make(CDecl);
+ if (!CategoryName) {
+ // Class extensions require a special treatment. Use an existing one.
+ for (CDecl = IDecl->getCategoryList(); CDecl;
+ CDecl = CDecl->getNextClassCategory())
+ if (CDecl->IsClassExtension())
+ break;
}
+ if (!CDecl) {
+ CDecl = ObjCCategoryDecl::Create(Context, CurContext, AtInterfaceLoc, ClassLoc,
+ CategoryLoc, CategoryName);
+ // FIXME: PushOnScopeChains?
+ CurContext->addDecl(CDecl);
- CDecl->setClassInterface(IDecl);
+ /// Check that class of this category is already completely declared.
+ if (!IDecl || IDecl->isForwardDecl()) {
+ CDecl->setInvalidDecl();
+ Diag(ClassLoc, diag::err_undef_interface) << ClassName;
+ return DeclPtrTy::make(CDecl);
+ }
+
+ CDecl->setClassInterface(IDecl);
+ // Insert first use of class extension to the list of class's categories.
+ if (!CategoryName)
+ CDecl->insertNextClassCategory();
+ }
// If the interface is deprecated, warn about it.
(void)DiagnoseUseOfDecl(IDecl, ClassLoc);
- /// Check for duplicate interface declaration for this category
- ObjCCategoryDecl *CDeclChain;
- for (CDeclChain = IDecl->getCategoryList(); CDeclChain;
- CDeclChain = CDeclChain->getNextClassCategory()) {
- if (CategoryName && CDeclChain->getIdentifier() == CategoryName) {
- Diag(CategoryLoc, diag::warn_dup_category_def)
- << ClassName << CategoryName;
- Diag(CDeclChain->getLocation(), diag::note_previous_definition);
- break;
+ if (CategoryName) {
+ /// Check for duplicate interface declaration for this category
+ ObjCCategoryDecl *CDeclChain;
+ for (CDeclChain = IDecl->getCategoryList(); CDeclChain;
+ CDeclChain = CDeclChain->getNextClassCategory()) {
+ if (CDeclChain->getIdentifier() == CategoryName) {
+ // Class extensions can be declared multiple times.
+ Diag(CategoryLoc, diag::warn_dup_category_def)
+ << ClassName << CategoryName;
+ Diag(CDeclChain->getLocation(), diag::note_previous_definition);
+ break;
+ }
}
+ if (!CDeclChain)
+ CDecl->insertNextClassCategory();
}
- if (!CDeclChain)
- CDecl->insertNextClassCategory();
if (NumProtoRefs) {
CDecl->setProtocolList((ObjCProtocolDecl**)ProtoRefs, NumProtoRefs,
ProtoLocs, Context);
// Protocols in the class extension belong to the class.
- if (!CDecl->getIdentifier())
+ if (CDecl->IsClassExtension())
IDecl->mergeClassExtensionProtocolList((ObjCProtocolDecl**)ProtoRefs,
NumProtoRefs, ProtoLocs,
Context);
@@ -1102,11 +1118,12 @@
CollectImmediateProperties((*PI), PropMap);
}
if (ObjCCategoryDecl *CATDecl = dyn_cast<ObjCCategoryDecl>(CDecl)) {
- for (ObjCContainerDecl::prop_iterator P = CATDecl->prop_begin(),
- E = CATDecl->prop_end(); P != E; ++P) {
- ObjCPropertyDecl *Prop = (*P);
- PropMap[Prop->getIdentifier()] = Prop;
- }
+ if (!CATDecl->IsClassExtension())
+ for (ObjCContainerDecl::prop_iterator P = CATDecl->prop_begin(),
+ E = CATDecl->prop_end(); P != E; ++P) {
+ ObjCPropertyDecl *Prop = (*P);
+ PropMap[Prop->getIdentifier()] = Prop;
+ }
// scan through class's protocols.
for (ObjCInterfaceDecl::protocol_iterator PI = CATDecl->protocol_begin(),
E = CATDecl->protocol_end(); PI != E; ++PI)
@@ -1261,7 +1278,7 @@
// Check class extensions (unnamed categories)
for (ObjCCategoryDecl *Categories = I->getCategoryList();
Categories; Categories = Categories->getNextClassCategory()) {
- if (!Categories->getIdentifier()) {
+ if (Categories->IsClassExtension()) {
ImplMethodsVsClassMethods(IMPDecl, Categories, IncompleteImpl);
break;
}
@@ -1269,7 +1286,7 @@
} else if (ObjCCategoryDecl *C = dyn_cast<ObjCCategoryDecl>(CDecl)) {
// For extended class, unimplemented methods in its protocols will
// be reported in the primary class.
- if (C->getIdentifier()) {
+ if (!C->IsClassExtension()) {
for (ObjCCategoryDecl::protocol_iterator PI = C->protocol_begin(),
E = C->protocol_end(); PI != E; ++PI)
CheckProtocolMethodDefs(IMPDecl->getLocation(), *PI, IncompleteImpl,
@@ -1826,17 +1843,18 @@
// Compare protocol properties with those in category
CompareProperties(C, DeclPtrTy::make(C));
- if (C->getIdentifier() == 0)
+ if (C->IsClassExtension())
DiagnoseClassExtensionDupMethods(C, C->getClassInterface());
}
if (ObjCContainerDecl *CDecl = dyn_cast<ObjCContainerDecl>(ClassDecl)) {
- // ProcessPropertyDecl is responsible for diagnosing conflicts with any
- // user-defined setter/getter. It also synthesizes setter/getter methods
- // and adds them to the DeclContext and global method pools.
- for (ObjCContainerDecl::prop_iterator I = CDecl->prop_begin(),
- E = CDecl->prop_end();
- I != E; ++I)
- ProcessPropertyDecl(*I, CDecl);
+ if (CDecl->getIdentifier())
+ // ProcessPropertyDecl is responsible for diagnosing conflicts with any
+ // user-defined setter/getter. It also synthesizes setter/getter methods
+ // and adds them to the DeclContext and global method pools.
+ for (ObjCContainerDecl::prop_iterator I = CDecl->prop_begin(),
+ E = CDecl->prop_end();
+ I != E; ++I)
+ ProcessPropertyDecl(*I, CDecl);
CDecl->setAtEndRange(AtEnd);
}
if (ObjCImplementationDecl *IC=dyn_cast<ObjCImplementationDecl>(ClassDecl)) {
@@ -2137,7 +2155,22 @@
// May modify Attributes.
CheckObjCPropertyAttributes(T, AtLoc, Attributes);
if (ObjCCategoryDecl *CDecl = dyn_cast<ObjCCategoryDecl>(ClassDecl))
- if (!CDecl->getIdentifier()) {
+ if (CDecl->IsClassExtension()) {
+ // Diagnose if this property is already in continuation class.
+ DeclContext *DC = dyn_cast<DeclContext>(ClassDecl);
+ assert(DC && "ClassDecl is not a DeclContext");
+ DeclContext::lookup_result Found = DC->lookup(FD.D.getIdentifier());
+ if (Found.first != Found.second && isa<ObjCPropertyDecl>(*Found.first)) {
+ Diag(AtLoc, diag::err_duplicate_property);
+ Diag((*Found.first)->getLocation(), diag::note_property_declare);
+ return DeclPtrTy();
+ }
+ ObjCPropertyDecl *PDecl = ObjCPropertyDecl::Create(Context, DC,
+ FD.D.getIdentifierLoc(),
+ FD.D.getIdentifier(),
+ AtLoc, T);
+ DC->addDecl(PDecl);
+
// This is a continuation class. property requires special
// handling.
if ((CCPrimary = CDecl->getClassInterface())) {
@@ -2201,6 +2234,7 @@
ProcessPropertyDecl(PIDecl, CCPrimary);
return DeclPtrTy();
}
+
// No matching property found in the primary class. Just fall thru
// and add property to continuation class's primary class.
ClassDecl = CCPrimary;
@@ -2354,7 +2388,7 @@
}
if (const ObjCCategoryDecl *CD =
dyn_cast<ObjCCategoryDecl>(property->getDeclContext())) {
- if (CD->getIdentifier()) {
+ if (!CD->IsClassExtension()) {
Diag(PropertyLoc, diag::error_category_property) << CD->getDeclName();
Diag(property->getLocation(), diag::note_property_declare);
return DeclPtrTy();