diff options
Diffstat (limited to 'lib/Sema/SemaDeclObjC.cpp')
| -rw-r--r-- | lib/Sema/SemaDeclObjC.cpp | 1004 |
1 files changed, 0 insertions, 1004 deletions
diff --git a/lib/Sema/SemaDeclObjC.cpp b/lib/Sema/SemaDeclObjC.cpp index 762ef38..b2f6717 100644 --- a/lib/Sema/SemaDeclObjC.cpp +++ b/lib/Sema/SemaDeclObjC.cpp @@ -20,25 +20,6 @@ #include "clang/Parse/DeclSpec.h" using namespace clang; -bool Sema::DiagnosePropertyAccessorMismatch(ObjCPropertyDecl *property, - ObjCMethodDecl *GetterMethod, - SourceLocation Loc) { - if (GetterMethod && - GetterMethod->getResultType() != property->getType()) { - AssignConvertType result = Incompatible; - if (property->getType()->isObjCObjectPointerType()) - result = CheckAssignmentConstraints(GetterMethod->getResultType(), property->getType()); - if (result != Compatible) { - Diag(Loc, diag::warn_accessor_property_type_mismatch) - << property->getDeclName() - << GetterMethod->getSelector(); - Diag(GetterMethod->getLocation(), diag::note_declared_at); - return true; - } - } - return false; -} - /// ActOnStartOfObjCMethodDef - This routine sets up parameters; invisible /// and user declared, in the method definition's AST. void Sema::ActOnStartOfObjCMethodDef(Scope *FnBodyScope, DeclPtrTy D) { @@ -361,171 +342,6 @@ Sema::FindProtocolDeclaration(bool WarnOnDeclarations, } } -/// DiagnosePropertyMismatch - Compares two properties for their -/// attributes and types and warns on a variety of inconsistencies. -/// -void -Sema::DiagnosePropertyMismatch(ObjCPropertyDecl *Property, - ObjCPropertyDecl *SuperProperty, - const IdentifierInfo *inheritedName) { - ObjCPropertyDecl::PropertyAttributeKind CAttr = - Property->getPropertyAttributes(); - ObjCPropertyDecl::PropertyAttributeKind SAttr = - SuperProperty->getPropertyAttributes(); - if ((CAttr & ObjCPropertyDecl::OBJC_PR_readonly) - && (SAttr & ObjCPropertyDecl::OBJC_PR_readwrite)) - Diag(Property->getLocation(), diag::warn_readonly_property) - << Property->getDeclName() << inheritedName; - if ((CAttr & ObjCPropertyDecl::OBJC_PR_copy) - != (SAttr & ObjCPropertyDecl::OBJC_PR_copy)) - Diag(Property->getLocation(), diag::warn_property_attribute) - << Property->getDeclName() << "copy" << inheritedName; - else if ((CAttr & ObjCPropertyDecl::OBJC_PR_retain) - != (SAttr & ObjCPropertyDecl::OBJC_PR_retain)) - Diag(Property->getLocation(), diag::warn_property_attribute) - << Property->getDeclName() << "retain" << inheritedName; - - if ((CAttr & ObjCPropertyDecl::OBJC_PR_nonatomic) - != (SAttr & ObjCPropertyDecl::OBJC_PR_nonatomic)) - Diag(Property->getLocation(), diag::warn_property_attribute) - << Property->getDeclName() << "atomic" << inheritedName; - if (Property->getSetterName() != SuperProperty->getSetterName()) - Diag(Property->getLocation(), diag::warn_property_attribute) - << Property->getDeclName() << "setter" << inheritedName; - if (Property->getGetterName() != SuperProperty->getGetterName()) - Diag(Property->getLocation(), diag::warn_property_attribute) - << Property->getDeclName() << "getter" << inheritedName; - - QualType LHSType = - Context.getCanonicalType(SuperProperty->getType()); - QualType RHSType = - Context.getCanonicalType(Property->getType()); - - if (!Context.typesAreCompatible(LHSType, RHSType)) { - // FIXME: Incorporate this test with typesAreCompatible. - if (LHSType->isObjCQualifiedIdType() && RHSType->isObjCQualifiedIdType()) - if (Context.ObjCQualifiedIdTypesAreCompatible(LHSType, RHSType, false)) - return; - Diag(Property->getLocation(), diag::warn_property_types_are_incompatible) - << Property->getType() << SuperProperty->getType() << inheritedName; - } -} - -/// ComparePropertiesInBaseAndSuper - This routine compares property -/// declarations in base and its super class, if any, and issues -/// diagnostics in a variety of inconsistant situations. -/// -void Sema::ComparePropertiesInBaseAndSuper(ObjCInterfaceDecl *IDecl) { - ObjCInterfaceDecl *SDecl = IDecl->getSuperClass(); - if (!SDecl) - return; - // FIXME: O(N^2) - for (ObjCInterfaceDecl::prop_iterator S = SDecl->prop_begin(), - E = SDecl->prop_end(); S != E; ++S) { - ObjCPropertyDecl *SuperPDecl = (*S); - // Does property in super class has declaration in current class? - for (ObjCInterfaceDecl::prop_iterator I = IDecl->prop_begin(), - E = IDecl->prop_end(); I != E; ++I) { - ObjCPropertyDecl *PDecl = (*I); - if (SuperPDecl->getIdentifier() == PDecl->getIdentifier()) - DiagnosePropertyMismatch(PDecl, SuperPDecl, - SDecl->getIdentifier()); - } - } -} - -/// MatchOneProtocolPropertiesInClass - This routine goes thru the list -/// of properties declared in a protocol and compares their attribute against -/// the same property declared in the class or category. -void -Sema::MatchOneProtocolPropertiesInClass(Decl *CDecl, - ObjCProtocolDecl *PDecl) { - ObjCInterfaceDecl *IDecl = dyn_cast_or_null<ObjCInterfaceDecl>(CDecl); - if (!IDecl) { - // Category - ObjCCategoryDecl *CatDecl = static_cast<ObjCCategoryDecl*>(CDecl); - assert (CatDecl && "MatchOneProtocolPropertiesInClass"); - 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(), - E = PDecl->prop_end(); P != E; ++P) { - ObjCPropertyDecl *Pr = (*P); - ObjCInterfaceDecl::prop_iterator CP, CE; - // Is this property already in class's list of properties? - for (CP = IDecl->prop_begin(), CE = IDecl->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()); - } -} - -/// CompareProperties - This routine compares properties -/// declared in 'ClassOrProtocol' objects (which can be a class or an -/// inherited protocol with the list of properties for class/category 'CDecl' -/// -void Sema::CompareProperties(Decl *CDecl, - DeclPtrTy ClassOrProtocol) { - Decl *ClassDecl = ClassOrProtocol.getAs<Decl>(); - ObjCInterfaceDecl *IDecl = dyn_cast_or_null<ObjCInterfaceDecl>(CDecl); - - if (!IDecl) { - // Category - ObjCCategoryDecl *CatDecl = static_cast<ObjCCategoryDecl*>(CDecl); - assert (CatDecl && "CompareProperties"); - if (ObjCCategoryDecl *MDecl = dyn_cast<ObjCCategoryDecl>(ClassDecl)) { - for (ObjCCategoryDecl::protocol_iterator P = MDecl->protocol_begin(), - E = MDecl->protocol_end(); P != E; ++P) - // Match properties of category with those of protocol (*P) - MatchOneProtocolPropertiesInClass(CatDecl, *P); - - // Go thru the list of protocols for this category and recursively match - // their properties with those in the category. - for (ObjCCategoryDecl::protocol_iterator P = CatDecl->protocol_begin(), - E = CatDecl->protocol_end(); P != E; ++P) - CompareProperties(CatDecl, DeclPtrTy::make(*P)); - } else { - ObjCProtocolDecl *MD = cast<ObjCProtocolDecl>(ClassDecl); - for (ObjCProtocolDecl::protocol_iterator P = MD->protocol_begin(), - E = MD->protocol_end(); P != E; ++P) - MatchOneProtocolPropertiesInClass(CatDecl, *P); - } - return; - } - - if (ObjCInterfaceDecl *MDecl = dyn_cast<ObjCInterfaceDecl>(ClassDecl)) { - for (ObjCInterfaceDecl::protocol_iterator P = MDecl->protocol_begin(), - E = MDecl->protocol_end(); P != E; ++P) - // Match properties of class IDecl with those of protocol (*P). - MatchOneProtocolPropertiesInClass(IDecl, *P); - - // Go thru the list of protocols for this class and recursively match - // their properties with those declared in the class. - for (ObjCInterfaceDecl::protocol_iterator P = IDecl->protocol_begin(), - E = IDecl->protocol_end(); P != E; ++P) - CompareProperties(IDecl, DeclPtrTy::make(*P)); - } else { - ObjCProtocolDecl *MD = cast<ObjCProtocolDecl>(ClassDecl); - for (ObjCProtocolDecl::protocol_iterator P = MD->protocol_begin(), - E = MD->protocol_end(); P != E; ++P) - MatchOneProtocolPropertiesInClass(IDecl, *P); - } -} - /// DiagnoseClassExtensionDupMethods - Check for duplicate declaration of /// a class method in its extension. /// @@ -941,57 +757,6 @@ void Sema::WarnConflictingTypedMethods(ObjCMethodDecl *ImpMethodDecl, } } -/// isPropertyReadonly - Return true if property is readonly, by searching -/// for the property in the class and in its categories and implementations -/// -bool Sema::isPropertyReadonly(ObjCPropertyDecl *PDecl, - ObjCInterfaceDecl *IDecl) { - // by far the most common case. - if (!PDecl->isReadOnly()) - return false; - // Even if property is ready only, if interface has a user defined setter, - // it is not considered read only. - if (IDecl->getInstanceMethod(PDecl->getSetterName())) - return false; - - // Main class has the property as 'readonly'. Must search - // through the category list to see if the property's - // attribute has been over-ridden to 'readwrite'. - for (ObjCCategoryDecl *Category = IDecl->getCategoryList(); - Category; Category = Category->getNextClassCategory()) { - // Even if property is ready only, if a category has a user defined setter, - // it is not considered read only. - if (Category->getInstanceMethod(PDecl->getSetterName())) - return false; - ObjCPropertyDecl *P = - Category->FindPropertyDeclaration(PDecl->getIdentifier()); - if (P && !P->isReadOnly()) - return false; - } - - // Also, check for definition of a setter method in the implementation if - // all else failed. - if (ObjCMethodDecl *OMD = dyn_cast<ObjCMethodDecl>(CurContext)) { - if (ObjCImplementationDecl *IMD = - dyn_cast<ObjCImplementationDecl>(OMD->getDeclContext())) { - if (IMD->getInstanceMethod(PDecl->getSetterName())) - return false; - } else if (ObjCCategoryImplDecl *CIMD = - dyn_cast<ObjCCategoryImplDecl>(OMD->getDeclContext())) { - if (CIMD->getInstanceMethod(PDecl->getSetterName())) - return false; - } - } - // Lastly, look through the implementation (if one is in scope). - if (ObjCImplementationDecl *ImpDecl = IDecl->getImplementation()) - if (ImpDecl->getInstanceMethod(PDecl->getSetterName())) - return false; - // If all fails, look at the super class. - if (ObjCInterfaceDecl *SIDecl = IDecl->getSuperClass()) - return isPropertyReadonly(PDecl, SIDecl); - return true; -} - /// FIXME: Type hierarchies in Objective-C can be deep. We could most likely /// improve the efficiency of selector lookups and type checking by associating /// with each protocol / interface / category the flattened instance tables. If @@ -1131,140 +896,6 @@ void Sema::MatchAllMethodDeclarations(const llvm::DenseSet<Selector> &InsMap, } } -/// CollectImmediateProperties - This routine collects all properties in -/// the class and its conforming protocols; but not those it its super class. -void Sema::CollectImmediateProperties(ObjCContainerDecl *CDecl, - llvm::DenseMap<IdentifierInfo *, ObjCPropertyDecl*>& PropMap) { - if (ObjCInterfaceDecl *IDecl = dyn_cast<ObjCInterfaceDecl>(CDecl)) { - for (ObjCContainerDecl::prop_iterator P = IDecl->prop_begin(), - E = IDecl->prop_end(); P != E; ++P) { - ObjCPropertyDecl *Prop = (*P); - PropMap[Prop->getIdentifier()] = Prop; - } - // scan through class's protocols. - for (ObjCInterfaceDecl::protocol_iterator PI = IDecl->protocol_begin(), - E = IDecl->protocol_end(); PI != E; ++PI) - CollectImmediateProperties((*PI), PropMap); - } - if (ObjCCategoryDecl *CATDecl = dyn_cast<ObjCCategoryDecl>(CDecl)) { - 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) - CollectImmediateProperties((*PI), PropMap); - } - else if (ObjCProtocolDecl *PDecl = dyn_cast<ObjCProtocolDecl>(CDecl)) { - for (ObjCProtocolDecl::prop_iterator P = PDecl->prop_begin(), - E = PDecl->prop_end(); P != E; ++P) { - ObjCPropertyDecl *Prop = (*P); - ObjCPropertyDecl *&PropEntry = PropMap[Prop->getIdentifier()]; - if (!PropEntry) - PropEntry = Prop; - } - // scan through protocol's protocols. - for (ObjCProtocolDecl::protocol_iterator PI = PDecl->protocol_begin(), - E = PDecl->protocol_end(); PI != E; ++PI) - CollectImmediateProperties((*PI), PropMap); - } -} - -/// LookupPropertyDecl - Looks up a property in the current class and all -/// its protocols. -ObjCPropertyDecl *Sema::LookupPropertyDecl(const ObjCContainerDecl *CDecl, - IdentifierInfo *II) { - if (const ObjCInterfaceDecl *IDecl = - dyn_cast<ObjCInterfaceDecl>(CDecl)) { - for (ObjCContainerDecl::prop_iterator P = IDecl->prop_begin(), - E = IDecl->prop_end(); P != E; ++P) { - ObjCPropertyDecl *Prop = (*P); - if (Prop->getIdentifier() == II) - return Prop; - } - // scan through class's protocols. - for (ObjCInterfaceDecl::protocol_iterator PI = IDecl->protocol_begin(), - E = IDecl->protocol_end(); PI != E; ++PI) { - ObjCPropertyDecl *Prop = LookupPropertyDecl((*PI), II); - if (Prop) - return Prop; - } - } - else if (const ObjCProtocolDecl *PDecl = - dyn_cast<ObjCProtocolDecl>(CDecl)) { - for (ObjCProtocolDecl::prop_iterator P = PDecl->prop_begin(), - E = PDecl->prop_end(); P != E; ++P) { - ObjCPropertyDecl *Prop = (*P); - if (Prop->getIdentifier() == II) - return Prop; - } - // scan through protocol's protocols. - for (ObjCProtocolDecl::protocol_iterator PI = PDecl->protocol_begin(), - E = PDecl->protocol_end(); PI != E; ++PI) { - ObjCPropertyDecl *Prop = LookupPropertyDecl((*PI), II); - if (Prop) - return Prop; - } - } - return 0; -} - - -void Sema::DiagnoseUnimplementedProperties(ObjCImplDecl* IMPDecl, - ObjCContainerDecl *CDecl, - const llvm::DenseSet<Selector>& InsMap) { - llvm::DenseMap<IdentifierInfo *, ObjCPropertyDecl*> PropMap; - CollectImmediateProperties(CDecl, PropMap); - if (PropMap.empty()) - return; - - llvm::DenseSet<ObjCPropertyDecl *> PropImplMap; - for (ObjCImplDecl::propimpl_iterator - I = IMPDecl->propimpl_begin(), - EI = IMPDecl->propimpl_end(); I != EI; ++I) - PropImplMap.insert((*I)->getPropertyDecl()); - - for (llvm::DenseMap<IdentifierInfo *, ObjCPropertyDecl*>::iterator - P = PropMap.begin(), E = PropMap.end(); P != E; ++P) { - ObjCPropertyDecl *Prop = P->second; - // Is there a matching propery synthesize/dynamic? - if (Prop->isInvalidDecl() || - Prop->getPropertyImplementation() == ObjCPropertyDecl::Optional || - PropImplMap.count(Prop)) - continue; - if (LangOpts.ObjCNonFragileABI2) { - ActOnPropertyImplDecl(IMPDecl->getLocation(), - SourceLocation(), - true, DeclPtrTy::make(IMPDecl), - Prop->getIdentifier(), - Prop->getIdentifier()); - continue; - } - if (!InsMap.count(Prop->getGetterName())) { - Diag(Prop->getLocation(), - isa<ObjCCategoryDecl>(CDecl) ? - diag::warn_setter_getter_impl_required_in_category : - diag::warn_setter_getter_impl_required) - << Prop->getDeclName() << Prop->getGetterName(); - Diag(IMPDecl->getLocation(), - diag::note_property_impl_required); - } - - if (!Prop->isReadOnly() && !InsMap.count(Prop->getSetterName())) { - Diag(Prop->getLocation(), - isa<ObjCCategoryDecl>(CDecl) ? - diag::warn_setter_getter_impl_required_in_category : - diag::warn_setter_getter_impl_required) - << Prop->getDeclName() << Prop->getSetterName(); - Diag(IMPDecl->getLocation(), - diag::note_property_impl_required); - } - } -} - void Sema::ImplMethodsVsClassMethods(ObjCImplDecl* IMPDecl, ObjCContainerDecl* CDecl, bool IncompleteImpl) { @@ -1336,41 +967,6 @@ void Sema::ImplMethodsVsClassMethods(ObjCImplDecl* IMPDecl, assert(false && "invalid ObjCContainerDecl type."); } -void -Sema::AtomicPropertySetterGetterRules (ObjCImplDecl* IMPDecl, - ObjCContainerDecl* IDecl) { - // Rules apply in non-GC mode only - if (getLangOptions().getGCMode() != LangOptions::NonGC) - return; - for (ObjCContainerDecl::prop_iterator I = IDecl->prop_begin(), - E = IDecl->prop_end(); - I != E; ++I) { - ObjCPropertyDecl *Property = (*I); - unsigned Attributes = Property->getPropertyAttributes(); - // We only care about readwrite atomic property. - if ((Attributes & ObjCPropertyDecl::OBJC_PR_nonatomic) || - !(Attributes & ObjCPropertyDecl::OBJC_PR_readwrite)) - continue; - if (const ObjCPropertyImplDecl *PIDecl - = IMPDecl->FindPropertyImplDecl(Property->getIdentifier())) { - if (PIDecl->getPropertyImplementation() == ObjCPropertyImplDecl::Dynamic) - continue; - ObjCMethodDecl *GetterMethod = - IMPDecl->getInstanceMethod(Property->getGetterName()); - ObjCMethodDecl *SetterMethod = - IMPDecl->getInstanceMethod(Property->getSetterName()); - if ((GetterMethod && !SetterMethod) || (!GetterMethod && SetterMethod)) { - SourceLocation MethodLoc = - (GetterMethod ? GetterMethod->getLocation() - : SetterMethod->getLocation()); - Diag(MethodLoc, diag::warn_atomic_property_rule) - << Property->getIdentifier(); - Diag(Property->getLocation(), diag::note_property_declare); - } - } - } -} - /// ActOnForwardClassDeclaration - Action::DeclPtrTy Sema::ActOnForwardClassDeclaration(SourceLocation AtClassLoc, @@ -1638,111 +1234,6 @@ ObjCMethodDecl *Sema::LookupFactoryMethodInGlobalPool(Selector Sel, return MethList.Method; } -/// ProcessPropertyDecl - Make sure that any user-defined setter/getter methods -/// have the property type and issue diagnostics if they don't. -/// Also synthesize a getter/setter method if none exist (and update the -/// appropriate lookup tables. FIXME: Should reconsider if adding synthesized -/// methods is the "right" thing to do. -void Sema::ProcessPropertyDecl(ObjCPropertyDecl *property, - ObjCContainerDecl *CD) { - ObjCMethodDecl *GetterMethod, *SetterMethod; - - GetterMethod = CD->getInstanceMethod(property->getGetterName()); - SetterMethod = CD->getInstanceMethod(property->getSetterName()); - DiagnosePropertyAccessorMismatch(property, GetterMethod, - property->getLocation()); - - if (SetterMethod) { - ObjCPropertyDecl::PropertyAttributeKind CAttr = - property->getPropertyAttributes(); - if ((!(CAttr & ObjCPropertyDecl::OBJC_PR_readonly)) && - Context.getCanonicalType(SetterMethod->getResultType()) != - Context.VoidTy) - Diag(SetterMethod->getLocation(), diag::err_setter_type_void); - if (SetterMethod->param_size() != 1 || - ((*SetterMethod->param_begin())->getType() != property->getType())) { - Diag(property->getLocation(), - diag::warn_accessor_property_type_mismatch) - << property->getDeclName() - << SetterMethod->getSelector(); - Diag(SetterMethod->getLocation(), diag::note_declared_at); - } - } - - // Synthesize getter/setter methods if none exist. - // Find the default getter and if one not found, add one. - // FIXME: The synthesized property we set here is misleading. We almost always - // synthesize these methods unless the user explicitly provided prototypes - // (which is odd, but allowed). Sema should be typechecking that the - // declarations jive in that situation (which it is not currently). - if (!GetterMethod) { - // No instance method of same name as property getter name was found. - // Declare a getter method and add it to the list of methods - // for this class. - GetterMethod = ObjCMethodDecl::Create(Context, property->getLocation(), - property->getLocation(), property->getGetterName(), - property->getType(), 0, CD, true, false, true, - (property->getPropertyImplementation() == - ObjCPropertyDecl::Optional) ? - ObjCMethodDecl::Optional : - ObjCMethodDecl::Required); - CD->addDecl(GetterMethod); - } else - // A user declared getter will be synthesize when @synthesize of - // the property with the same name is seen in the @implementation - GetterMethod->setSynthesized(true); - property->setGetterMethodDecl(GetterMethod); - - // Skip setter if property is read-only. - if (!property->isReadOnly()) { - // Find the default setter and if one not found, add one. - if (!SetterMethod) { - // No instance method of same name as property setter name was found. - // Declare a setter method and add it to the list of methods - // for this class. - SetterMethod = ObjCMethodDecl::Create(Context, property->getLocation(), - property->getLocation(), - property->getSetterName(), - Context.VoidTy, 0, CD, true, false, true, - (property->getPropertyImplementation() == - ObjCPropertyDecl::Optional) ? - ObjCMethodDecl::Optional : - ObjCMethodDecl::Required); - // Invent the arguments for the setter. We don't bother making a - // nice name for the argument. - ParmVarDecl *Argument = ParmVarDecl::Create(Context, SetterMethod, - property->getLocation(), - property->getIdentifier(), - property->getType(), - /*TInfo=*/0, - VarDecl::None, - 0); - SetterMethod->setMethodParams(Context, &Argument, 1); - CD->addDecl(SetterMethod); - } else - // A user declared setter will be synthesize when @synthesize of - // the property with the same name is seen in the @implementation - SetterMethod->setSynthesized(true); - property->setSetterMethodDecl(SetterMethod); - } - // Add any synthesized methods to the global pool. This allows us to - // handle the following, which is supported by GCC (and part of the design). - // - // @interface Foo - // @property double bar; - // @end - // - // void thisIsUnfortunate() { - // id foo; - // double bar = [foo bar]; - // } - // - if (GetterMethod) - AddInstanceMethodToGlobalPool(GetterMethod); - if (SetterMethod) - AddInstanceMethodToGlobalPool(SetterMethod); -} - /// CompareMethodParamsInBaseAndSuper - This routine compares methods with /// identical selector names in current and its super classes and issues /// a warning if any of their argument types are incompatible. @@ -2106,501 +1597,6 @@ Sema::DeclPtrTy Sema::ActOnMethodDeclaration( return DeclPtrTy::make(ObjCMethod); } -void Sema::CheckObjCPropertyAttributes(QualType PropertyTy, - SourceLocation Loc, - unsigned &Attributes) { - // FIXME: Improve the reported location. - - // readonly and readwrite/assign/retain/copy conflict. - if ((Attributes & ObjCDeclSpec::DQ_PR_readonly) && - (Attributes & (ObjCDeclSpec::DQ_PR_readwrite | - ObjCDeclSpec::DQ_PR_assign | - ObjCDeclSpec::DQ_PR_copy | - ObjCDeclSpec::DQ_PR_retain))) { - const char * which = (Attributes & ObjCDeclSpec::DQ_PR_readwrite) ? - "readwrite" : - (Attributes & ObjCDeclSpec::DQ_PR_assign) ? - "assign" : - (Attributes & ObjCDeclSpec::DQ_PR_copy) ? - "copy" : "retain"; - - Diag(Loc, (Attributes & (ObjCDeclSpec::DQ_PR_readwrite)) ? - diag::err_objc_property_attr_mutually_exclusive : - diag::warn_objc_property_attr_mutually_exclusive) - << "readonly" << which; - } - - // Check for copy or retain on non-object types. - if ((Attributes & (ObjCDeclSpec::DQ_PR_copy | ObjCDeclSpec::DQ_PR_retain)) && - !PropertyTy->isObjCObjectPointerType() && - !PropertyTy->isBlockPointerType() && - !Context.isObjCNSObjectType(PropertyTy)) { - Diag(Loc, diag::err_objc_property_requires_object) - << (Attributes & ObjCDeclSpec::DQ_PR_copy ? "copy" : "retain"); - Attributes &= ~(ObjCDeclSpec::DQ_PR_copy | ObjCDeclSpec::DQ_PR_retain); - } - - // Check for more than one of { assign, copy, retain }. - if (Attributes & ObjCDeclSpec::DQ_PR_assign) { - if (Attributes & ObjCDeclSpec::DQ_PR_copy) { - Diag(Loc, diag::err_objc_property_attr_mutually_exclusive) - << "assign" << "copy"; - Attributes &= ~ObjCDeclSpec::DQ_PR_copy; - } - if (Attributes & ObjCDeclSpec::DQ_PR_retain) { - Diag(Loc, diag::err_objc_property_attr_mutually_exclusive) - << "assign" << "retain"; - Attributes &= ~ObjCDeclSpec::DQ_PR_retain; - } - } else if (Attributes & ObjCDeclSpec::DQ_PR_copy) { - if (Attributes & ObjCDeclSpec::DQ_PR_retain) { - Diag(Loc, diag::err_objc_property_attr_mutually_exclusive) - << "copy" << "retain"; - Attributes &= ~ObjCDeclSpec::DQ_PR_retain; - } - } - - // Warn if user supplied no assignment attribute, property is - // readwrite, and this is an object type. - if (!(Attributes & (ObjCDeclSpec::DQ_PR_assign | ObjCDeclSpec::DQ_PR_copy | - ObjCDeclSpec::DQ_PR_retain)) && - !(Attributes & ObjCDeclSpec::DQ_PR_readonly) && - PropertyTy->isObjCObjectPointerType()) { - // Skip this warning in gc-only mode. - if (getLangOptions().getGCMode() != LangOptions::GCOnly) - Diag(Loc, diag::warn_objc_property_no_assignment_attribute); - - // If non-gc code warn that this is likely inappropriate. - if (getLangOptions().getGCMode() == LangOptions::NonGC) - Diag(Loc, diag::warn_objc_property_default_assign_on_object); - - // FIXME: Implement warning dependent on NSCopying being - // implemented. See also: - // <rdar://5168496&4855821&5607453&5096644&4947311&5698469&4947014&5168496> - // (please trim this list while you are at it). - } - - if (!(Attributes & ObjCDeclSpec::DQ_PR_copy) - && getLangOptions().getGCMode() == LangOptions::GCOnly - && PropertyTy->isBlockPointerType()) - Diag(Loc, diag::warn_objc_property_copy_missing_on_block); -} - -Sema::DeclPtrTy Sema::ActOnProperty(Scope *S, SourceLocation AtLoc, - FieldDeclarator &FD, - ObjCDeclSpec &ODS, - Selector GetterSel, - Selector SetterSel, - DeclPtrTy ClassCategory, - bool *isOverridingProperty, - tok::ObjCKeywordKind MethodImplKind) { - unsigned Attributes = ODS.getPropertyAttributes(); - bool isReadWrite = ((Attributes & ObjCDeclSpec::DQ_PR_readwrite) || - // default is readwrite! - !(Attributes & ObjCDeclSpec::DQ_PR_readonly)); - // property is defaulted to 'assign' if it is readwrite and is - // not retain or copy - bool isAssign = ((Attributes & ObjCDeclSpec::DQ_PR_assign) || - (isReadWrite && - !(Attributes & ObjCDeclSpec::DQ_PR_retain) && - !(Attributes & ObjCDeclSpec::DQ_PR_copy))); - QualType T = GetTypeForDeclarator(FD.D, S); - if (T->isReferenceType()) { - Diag(AtLoc, diag::error_reference_property); - return DeclPtrTy(); - } - Decl *ClassDecl = ClassCategory.getAs<Decl>(); - ObjCInterfaceDecl *CCPrimary = 0; // continuation class's primary class - // May modify Attributes. - CheckObjCPropertyAttributes(T, AtLoc, Attributes); - if (ObjCCategoryDecl *CDecl = dyn_cast<ObjCCategoryDecl>(ClassDecl)) - 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())) { - // Find the property in continuation class's primary class only. - IdentifierInfo *PropertyId = FD.D.getIdentifier(); - if (ObjCPropertyDecl *PIDecl = - CCPrimary->FindPropertyVisibleInPrimaryClass(PropertyId)) { - // property 'PIDecl's readonly attribute will be over-ridden - // with continuation class's readwrite property attribute! - unsigned PIkind = PIDecl->getPropertyAttributes(); - if (isReadWrite && (PIkind & ObjCPropertyDecl::OBJC_PR_readonly)) { - unsigned retainCopyNonatomic = - (ObjCPropertyDecl::OBJC_PR_retain | - ObjCPropertyDecl::OBJC_PR_copy | - ObjCPropertyDecl::OBJC_PR_nonatomic); - if ((Attributes & retainCopyNonatomic) != - (PIkind & retainCopyNonatomic)) { - Diag(AtLoc, diag::warn_property_attr_mismatch); - Diag(PIDecl->getLocation(), diag::note_property_declare); - } - DeclContext *DC = dyn_cast<DeclContext>(CCPrimary); - assert(DC && "ClassDecl is not a DeclContext"); - DeclContext::lookup_result Found = - DC->lookup(PIDecl->getDeclName()); - bool PropertyInPrimaryClass = false; - for (; Found.first != Found.second; ++Found.first) - if (isa<ObjCPropertyDecl>(*Found.first)) { - PropertyInPrimaryClass = true; - break; - } - if (!PropertyInPrimaryClass) { - // Protocol is not in the primary class. Must build one for it. - ObjCDeclSpec ProtocolPropertyODS; - // FIXME. Assuming that ObjCDeclSpec::ObjCPropertyAttributeKind and - // ObjCPropertyDecl::PropertyAttributeKind have identical values. - // Should consolidate both into one enum type. - ProtocolPropertyODS.setPropertyAttributes( - (ObjCDeclSpec::ObjCPropertyAttributeKind)PIkind); - DeclPtrTy ProtocolPtrTy = - ActOnProperty(S, AtLoc, FD, ProtocolPropertyODS, - PIDecl->getGetterName(), - PIDecl->getSetterName(), - DeclPtrTy::make(CCPrimary), isOverridingProperty, - MethodImplKind); - PIDecl = ProtocolPtrTy.getAs<ObjCPropertyDecl>(); - } - PIDecl->makeitReadWriteAttribute(); - if (Attributes & ObjCDeclSpec::DQ_PR_retain) - PIDecl->setPropertyAttributes(ObjCPropertyDecl::OBJC_PR_retain); - if (Attributes & ObjCDeclSpec::DQ_PR_copy) - PIDecl->setPropertyAttributes(ObjCPropertyDecl::OBJC_PR_copy); - PIDecl->setSetterName(SetterSel); - } else { - Diag(AtLoc, diag::err_use_continuation_class) - << CCPrimary->getDeclName(); - Diag(PIDecl->getLocation(), diag::note_property_declare); - } - *isOverridingProperty = true; - // Make sure setter decl is synthesized, and added to primary - // class's list. - 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; - } else { - Diag(CDecl->getLocation(), diag::err_continuation_class); - *isOverridingProperty = true; - return DeclPtrTy(); - } - } - - // Issue a warning if property is 'assign' as default and its object, which is - // gc'able conforms to NSCopying protocol - if (getLangOptions().getGCMode() != LangOptions::NonGC && - isAssign && !(Attributes & ObjCDeclSpec::DQ_PR_assign)) - if (T->isObjCObjectPointerType()) { - QualType InterfaceTy = T->getPointeeType(); - if (const ObjCInterfaceType *OIT = - InterfaceTy->getAs<ObjCInterfaceType>()) { - ObjCInterfaceDecl *IDecl = OIT->getDecl(); - if (IDecl) - if (ObjCProtocolDecl* PNSCopying = - LookupProtocol(&Context.Idents.get("NSCopying"))) - if (IDecl->ClassImplementsProtocol(PNSCopying, true)) - Diag(AtLoc, diag::warn_implements_nscopying) - << FD.D.getIdentifier(); - } - } - if (T->isObjCInterfaceType()) - Diag(FD.D.getIdentifierLoc(), diag::err_statically_allocated_object); - - DeclContext *DC = dyn_cast<DeclContext>(ClassDecl); - assert(DC && "ClassDecl is not a DeclContext"); - ObjCPropertyDecl *PDecl = ObjCPropertyDecl::Create(Context, DC, - FD.D.getIdentifierLoc(), - FD.D.getIdentifier(), - AtLoc, T); - DeclContext::lookup_result Found = DC->lookup(PDecl->getDeclName()); - if (Found.first != Found.second && isa<ObjCPropertyDecl>(*Found.first)) { - Diag(PDecl->getLocation(), diag::err_duplicate_property); - Diag((*Found.first)->getLocation(), diag::note_property_declare); - PDecl->setInvalidDecl(); - } - else - DC->addDecl(PDecl); - - if (T->isArrayType() || T->isFunctionType()) { - Diag(AtLoc, diag::err_property_type) << T; - PDecl->setInvalidDecl(); - } - - ProcessDeclAttributes(S, PDecl, FD.D); - - // Regardless of setter/getter attribute, we save the default getter/setter - // selector names in anticipation of declaration of setter/getter methods. - PDecl->setGetterName(GetterSel); - PDecl->setSetterName(SetterSel); - - if (Attributes & ObjCDeclSpec::DQ_PR_readonly) - PDecl->setPropertyAttributes(ObjCPropertyDecl::OBJC_PR_readonly); - - if (Attributes & ObjCDeclSpec::DQ_PR_getter) - PDecl->setPropertyAttributes(ObjCPropertyDecl::OBJC_PR_getter); - - if (Attributes & ObjCDeclSpec::DQ_PR_setter) - PDecl->setPropertyAttributes(ObjCPropertyDecl::OBJC_PR_setter); - - if (isReadWrite) - PDecl->setPropertyAttributes(ObjCPropertyDecl::OBJC_PR_readwrite); - - if (Attributes & ObjCDeclSpec::DQ_PR_retain) - PDecl->setPropertyAttributes(ObjCPropertyDecl::OBJC_PR_retain); - - if (Attributes & ObjCDeclSpec::DQ_PR_copy) - PDecl->setPropertyAttributes(ObjCPropertyDecl::OBJC_PR_copy); - - if (isAssign) - PDecl->setPropertyAttributes(ObjCPropertyDecl::OBJC_PR_assign); - - if (Attributes & ObjCDeclSpec::DQ_PR_nonatomic) - PDecl->setPropertyAttributes(ObjCPropertyDecl::OBJC_PR_nonatomic); - - if (MethodImplKind == tok::objc_required) - PDecl->setPropertyImplementation(ObjCPropertyDecl::Required); - else if (MethodImplKind == tok::objc_optional) - PDecl->setPropertyImplementation(ObjCPropertyDecl::Optional); - // A case of continuation class adding a new property in the class. This - // is not what it was meant for. However, gcc supports it and so should we. - // Make sure setter/getters are declared here. - if (CCPrimary) - ProcessPropertyDecl(PDecl, CCPrimary); - - return DeclPtrTy::make(PDecl); -} - -ObjCIvarDecl* -Sema::SynthesizeNewPropertyIvar(ObjCInterfaceDecl *IDecl, - IdentifierInfo *NameII) { - ObjCIvarDecl *Ivar = 0; - ObjCPropertyDecl *Prop = LookupPropertyDecl(IDecl, NameII); - if (Prop && !Prop->isInvalidDecl()) { - DeclContext *EnclosingContext = cast_or_null<DeclContext>(IDecl); - QualType PropType = Context.getCanonicalType(Prop->getType()); - assert(EnclosingContext && - "null DeclContext for synthesized ivar - SynthesizeNewPropertyIvar"); - Ivar = ObjCIvarDecl::Create(Context, EnclosingContext, - Prop->getLocation(), - NameII, PropType, /*Dinfo=*/0, - ObjCIvarDecl::Public, - (Expr *)0); - Ivar->setLexicalDeclContext(IDecl); - IDecl->addDecl(Ivar); - Prop->setPropertyIvarDecl(Ivar); - } - return Ivar; -} - -/// ActOnPropertyImplDecl - This routine performs semantic checks and -/// builds the AST node for a property implementation declaration; declared -/// as @synthesize or @dynamic. -/// -Sema::DeclPtrTy Sema::ActOnPropertyImplDecl(SourceLocation AtLoc, - SourceLocation PropertyLoc, - bool Synthesize, - DeclPtrTy ClassCatImpDecl, - IdentifierInfo *PropertyId, - IdentifierInfo *PropertyIvar) { - Decl *ClassImpDecl = ClassCatImpDecl.getAs<Decl>(); - // Make sure we have a context for the property implementation declaration. - if (!ClassImpDecl) { - Diag(AtLoc, diag::error_missing_property_context); - return DeclPtrTy(); - } - ObjCPropertyDecl *property = 0; - ObjCInterfaceDecl* IDecl = 0; - // Find the class or category class where this property must have - // a declaration. - ObjCImplementationDecl *IC = 0; - ObjCCategoryImplDecl* CatImplClass = 0; - if ((IC = dyn_cast<ObjCImplementationDecl>(ClassImpDecl))) { - IDecl = IC->getClassInterface(); - // We always synthesize an interface for an implementation - // without an interface decl. So, IDecl is always non-zero. - assert(IDecl && - "ActOnPropertyImplDecl - @implementation without @interface"); - - // Look for this property declaration in the @implementation's @interface - property = IDecl->FindPropertyDeclaration(PropertyId); - if (!property) { - Diag(PropertyLoc, diag::error_bad_property_decl) << IDecl->getDeclName(); - return DeclPtrTy(); - } - if (const ObjCCategoryDecl *CD = - dyn_cast<ObjCCategoryDecl>(property->getDeclContext())) { - if (!CD->IsClassExtension()) { - Diag(PropertyLoc, diag::error_category_property) << CD->getDeclName(); - Diag(property->getLocation(), diag::note_property_declare); - return DeclPtrTy(); - } - } - } else if ((CatImplClass = dyn_cast<ObjCCategoryImplDecl>(ClassImpDecl))) { - if (Synthesize) { - Diag(AtLoc, diag::error_synthesize_category_decl); - return DeclPtrTy(); - } - IDecl = CatImplClass->getClassInterface(); - if (!IDecl) { - Diag(AtLoc, diag::error_missing_property_interface); - return DeclPtrTy(); - } - ObjCCategoryDecl *Category = - IDecl->FindCategoryDeclaration(CatImplClass->getIdentifier()); - - // If category for this implementation not found, it is an error which - // has already been reported eralier. - if (!Category) - return DeclPtrTy(); - // Look for this property declaration in @implementation's category - property = Category->FindPropertyDeclaration(PropertyId); - if (!property) { - Diag(PropertyLoc, diag::error_bad_category_property_decl) - << Category->getDeclName(); - return DeclPtrTy(); - } - } else { - Diag(AtLoc, diag::error_bad_property_context); - return DeclPtrTy(); - } - ObjCIvarDecl *Ivar = 0; - // Check that we have a valid, previously declared ivar for @synthesize - if (Synthesize) { - // @synthesize - if (!PropertyIvar) - PropertyIvar = PropertyId; - QualType PropType = Context.getCanonicalType(property->getType()); - // Check that this is a previously declared 'ivar' in 'IDecl' interface - ObjCInterfaceDecl *ClassDeclared; - Ivar = IDecl->lookupInstanceVariable(PropertyIvar, ClassDeclared); - if (!Ivar) { - DeclContext *EnclosingContext = cast_or_null<DeclContext>(IDecl); - assert(EnclosingContext && - "null DeclContext for synthesized ivar - ActOnPropertyImplDecl"); - Ivar = ObjCIvarDecl::Create(Context, EnclosingContext, PropertyLoc, - PropertyIvar, PropType, /*Dinfo=*/0, - ObjCIvarDecl::Public, - (Expr *)0); - IDecl->makeDeclVisibleInContext(Ivar, false); - property->setPropertyIvarDecl(Ivar); - if (!getLangOptions().ObjCNonFragileABI) - Diag(PropertyLoc, diag::error_missing_property_ivar_decl) << PropertyId; - // Note! I deliberately want it to fall thru so, we have a - // a property implementation and to avoid future warnings. - } else if (getLangOptions().ObjCNonFragileABI && - ClassDeclared != IDecl) { - Diag(PropertyLoc, diag::error_ivar_in_superclass_use) - << property->getDeclName() << Ivar->getDeclName() - << ClassDeclared->getDeclName(); - Diag(Ivar->getLocation(), diag::note_previous_access_declaration) - << Ivar << Ivar->getNameAsCString(); - // Note! I deliberately want it to fall thru so more errors are caught. - } - QualType IvarType = Context.getCanonicalType(Ivar->getType()); - - // Check that type of property and its ivar are type compatible. - if (PropType != IvarType) { - if (CheckAssignmentConstraints(PropType, IvarType) != Compatible) { - Diag(PropertyLoc, diag::error_property_ivar_type) - << property->getDeclName() << Ivar->getDeclName(); - // Note! I deliberately want it to fall thru so, we have a - // a property implementation and to avoid future warnings. - } - - // FIXME! Rules for properties are somewhat different that those - // for assignments. Use a new routine to consolidate all cases; - // specifically for property redeclarations as well as for ivars. - QualType lhsType =Context.getCanonicalType(PropType).getUnqualifiedType(); - QualType rhsType =Context.getCanonicalType(IvarType).getUnqualifiedType(); - if (lhsType != rhsType && - lhsType->isArithmeticType()) { - Diag(PropertyLoc, diag::error_property_ivar_type) - << property->getDeclName() << Ivar->getDeclName(); - // Fall thru - see previous comment - } - // __weak is explicit. So it works on Canonical type. - if (PropType.isObjCGCWeak() && !IvarType.isObjCGCWeak() && - getLangOptions().getGCMode() != LangOptions::NonGC) { - Diag(PropertyLoc, diag::error_weak_property) - << property->getDeclName() << Ivar->getDeclName(); - // Fall thru - see previous comment - } - if ((property->getType()->isObjCObjectPointerType() || - PropType.isObjCGCStrong()) && IvarType.isObjCGCWeak() && - getLangOptions().getGCMode() != LangOptions::NonGC) { - Diag(PropertyLoc, diag::error_strong_property) - << property->getDeclName() << Ivar->getDeclName(); - // Fall thru - see previous comment - } - } - } else if (PropertyIvar) - // @dynamic - Diag(PropertyLoc, diag::error_dynamic_property_ivar_decl); - assert (property && "ActOnPropertyImplDecl - property declaration missing"); - ObjCPropertyImplDecl *PIDecl = - ObjCPropertyImplDecl::Create(Context, CurContext, AtLoc, PropertyLoc, - property, - (Synthesize ? - ObjCPropertyImplDecl::Synthesize - : ObjCPropertyImplDecl::Dynamic), - Ivar); - if (IC) { - if (Synthesize) - if (ObjCPropertyImplDecl *PPIDecl = - IC->FindPropertyImplIvarDecl(PropertyIvar)) { - Diag(PropertyLoc, diag::error_duplicate_ivar_use) - << PropertyId << PPIDecl->getPropertyDecl()->getIdentifier() - << PropertyIvar; - Diag(PPIDecl->getLocation(), diag::note_previous_use); - } - - if (ObjCPropertyImplDecl *PPIDecl - = IC->FindPropertyImplDecl(PropertyId)) { - Diag(PropertyLoc, diag::error_property_implemented) << PropertyId; - Diag(PPIDecl->getLocation(), diag::note_previous_declaration); - return DeclPtrTy(); - } - IC->addPropertyImplementation(PIDecl); - } else { - if (Synthesize) - if (ObjCPropertyImplDecl *PPIDecl = - CatImplClass->FindPropertyImplIvarDecl(PropertyIvar)) { - Diag(PropertyLoc, diag::error_duplicate_ivar_use) - << PropertyId << PPIDecl->getPropertyDecl()->getIdentifier() - << PropertyIvar; - Diag(PPIDecl->getLocation(), diag::note_previous_use); - } - - if (ObjCPropertyImplDecl *PPIDecl = - CatImplClass->FindPropertyImplDecl(PropertyId)) { - Diag(PropertyLoc, diag::error_property_implemented) << PropertyId; - Diag(PPIDecl->getLocation(), diag::note_previous_declaration); - return DeclPtrTy(); - } - CatImplClass->addPropertyImplementation(PIDecl); - } - - return DeclPtrTy::make(PIDecl); -} - bool Sema::CheckObjCDeclScope(Decl *D) { if (isa<TranslationUnitDecl>(CurContext->getLookupContext())) return false; |
