| //===--- SemaDeclObjC.cpp - Semantic Analysis for ObjC Declarations -------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file implements semantic analysis for Objective C declarations. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "Sema.h" |
| #include "clang/AST/ASTContext.h" |
| #include "clang/AST/DeclObjC.h" |
| #include "clang/Parse/Scope.h" |
| |
| using namespace clang; |
| |
| /// ObjCActOnStartOfMethodDef - This routine sets up parameters; invisible |
| /// and user declared, in the method definition's AST. |
| void Sema::ObjCActOnStartOfMethodDef(Scope *FnBodyScope, DeclTy *D) { |
| assert(CurFunctionDecl == 0 && "Method parsing confused"); |
| ObjCMethodDecl *MDecl = dyn_cast<ObjCMethodDecl>(static_cast<Decl *>(D)); |
| assert(MDecl != 0 && "Not a method declarator!"); |
| |
| // Allow the rest of sema to find private method decl implementations. |
| if (MDecl->isInstance()) |
| AddInstanceMethodToGlobalPool(MDecl); |
| else |
| AddFactoryMethodToGlobalPool(MDecl); |
| |
| // Allow all of Sema to see that we are entering a method definition. |
| CurMethodDecl = MDecl; |
| PushDeclContext(MDecl); |
| |
| // Create Decl objects for each parameter, entrring them in the scope for |
| // binding to their use. |
| struct DeclaratorChunk::ParamInfo PI; |
| |
| // Insert the invisible arguments, self and _cmd! |
| PI.Ident = &Context.Idents.get("self"); |
| PI.IdentLoc = SourceLocation(); // synthesized vars have a null location. |
| QualType selfTy = Context.getObjCIdType(); |
| if (MDecl->isInstance()) { |
| if (ObjCInterfaceDecl *OID = MDecl->getClassInterface()) { |
| // There may be no interface context due to error in declaration of the |
| // interface (which has been reported). Recover gracefully |
| selfTy = Context.getObjCInterfaceType(OID); |
| selfTy = Context.getPointerType(selfTy); |
| } |
| } |
| CurMethodDecl->setSelfDecl(CreateImplicitParameter(FnBodyScope, PI.Ident, |
| PI.IdentLoc, selfTy)); |
| |
| PI.Ident = &Context.Idents.get("_cmd"); |
| CreateImplicitParameter(FnBodyScope, PI.Ident, PI.IdentLoc, |
| Context.getObjCSelType()); |
| |
| // Introduce all of the other parameters into this scope. |
| for (unsigned i = 0, e = MDecl->getNumParams(); i != e; ++i) { |
| ParmVarDecl *PDecl = MDecl->getParamDecl(i); |
| IdentifierInfo *II = PDecl->getIdentifier(); |
| if (II) |
| PushOnScopeChains(PDecl, FnBodyScope); |
| } |
| } |
| |
| Sema::DeclTy *Sema::ActOnStartClassInterface( |
| SourceLocation AtInterfaceLoc, |
| IdentifierInfo *ClassName, SourceLocation ClassLoc, |
| IdentifierInfo *SuperName, SourceLocation SuperLoc, |
| IdentifierInfo **ProtocolNames, unsigned NumProtocols, |
| SourceLocation EndProtoLoc, AttributeList *AttrList) { |
| assert(ClassName && "Missing class identifier"); |
| |
| // Check for another declaration kind with the same name. |
| Decl *PrevDecl = LookupDecl(ClassName, Decl::IDNS_Ordinary, TUScope); |
| if (PrevDecl && !isa<ObjCInterfaceDecl>(PrevDecl)) { |
| Diag(ClassLoc, diag::err_redefinition_different_kind, |
| ClassName->getName()); |
| Diag(PrevDecl->getLocation(), diag::err_previous_definition); |
| } |
| |
| ObjCInterfaceDecl* IDecl = dyn_cast_or_null<ObjCInterfaceDecl>(PrevDecl); |
| if (IDecl) { |
| // Class already seen. Is it a forward declaration? |
| if (!IDecl->isForwardDecl()) |
| Diag(AtInterfaceLoc, diag::err_duplicate_class_def, IDecl->getName()); |
| else { |
| IDecl->setLocation(AtInterfaceLoc); |
| IDecl->setForwardDecl(false); |
| IDecl->AllocIntfRefProtocols(NumProtocols); |
| } |
| } |
| else { |
| IDecl = ObjCInterfaceDecl::Create(Context, AtInterfaceLoc, NumProtocols, |
| ClassName, ClassLoc); |
| |
| ObjCInterfaceDecls[ClassName] = IDecl; |
| // Remember that this needs to be removed when the scope is popped. |
| TUScope->AddDecl(IDecl); |
| } |
| |
| if (SuperName) { |
| ObjCInterfaceDecl* SuperClassEntry = 0; |
| // Check if a different kind of symbol declared in this scope. |
| PrevDecl = LookupDecl(SuperName, Decl::IDNS_Ordinary, TUScope); |
| if (PrevDecl && !isa<ObjCInterfaceDecl>(PrevDecl)) { |
| Diag(SuperLoc, diag::err_redefinition_different_kind, |
| SuperName->getName()); |
| Diag(PrevDecl->getLocation(), diag::err_previous_definition); |
| } |
| else { |
| // Check that super class is previously defined |
| SuperClassEntry = dyn_cast_or_null<ObjCInterfaceDecl>(PrevDecl); |
| |
| if (!SuperClassEntry || SuperClassEntry->isForwardDecl()) { |
| Diag(AtInterfaceLoc, diag::err_undef_superclass, |
| SuperClassEntry ? SuperClassEntry->getName() |
| : SuperName->getName(), |
| ClassName->getName()); |
| } |
| } |
| IDecl->setSuperClass(SuperClassEntry); |
| IDecl->setSuperClassLoc(SuperLoc); |
| IDecl->setLocEnd(SuperLoc); |
| } else { // we have a root class. |
| IDecl->setLocEnd(ClassLoc); |
| } |
| |
| /// Check then save referenced protocols |
| if (NumProtocols) { |
| for (unsigned int i = 0; i != NumProtocols; i++) { |
| ObjCProtocolDecl* RefPDecl = ObjCProtocols[ProtocolNames[i]]; |
| if (!RefPDecl || RefPDecl->isForwardDecl()) |
| Diag(ClassLoc, diag::warn_undef_protocolref, |
| ProtocolNames[i]->getName(), |
| ClassName->getName()); |
| IDecl->setIntfRefProtocols(i, RefPDecl); |
| } |
| IDecl->setLocEnd(EndProtoLoc); |
| } |
| return IDecl; |
| } |
| |
| /// ActOnCompatiblityAlias - this action is called after complete parsing of |
| /// @compaatibility_alias declaration. It sets up the alias relationships. |
| Sema::DeclTy *Sema::ActOnCompatiblityAlias(SourceLocation AtLoc, |
| IdentifierInfo *AliasName, |
| SourceLocation AliasLocation, |
| IdentifierInfo *ClassName, |
| SourceLocation ClassLocation) { |
| // Look for previous declaration of alias name |
| Decl *ADecl = LookupDecl(AliasName, Decl::IDNS_Ordinary, TUScope); |
| if (ADecl) { |
| if (isa<ObjCCompatibleAliasDecl>(ADecl)) { |
| Diag(AliasLocation, diag::warn_previous_alias_decl); |
| Diag(ADecl->getLocation(), diag::warn_previous_declaration); |
| } |
| else { |
| Diag(AliasLocation, diag::err_conflicting_aliasing_type, |
| AliasName->getName()); |
| Diag(ADecl->getLocation(), diag::err_previous_declaration); |
| } |
| return 0; |
| } |
| // Check for class declaration |
| Decl *CDeclU = LookupDecl(ClassName, Decl::IDNS_Ordinary, TUScope); |
| ObjCInterfaceDecl *CDecl = dyn_cast_or_null<ObjCInterfaceDecl>(CDeclU); |
| if (CDecl == 0) { |
| Diag(ClassLocation, diag::warn_undef_interface, ClassName->getName()); |
| if (CDeclU) |
| Diag(CDeclU->getLocation(), diag::warn_previous_declaration); |
| return 0; |
| } |
| |
| // Everything checked out, instantiate a new alias declaration AST. |
| ObjCCompatibleAliasDecl *AliasDecl = |
| ObjCCompatibleAliasDecl::Create(Context, AtLoc, AliasName, CDecl); |
| |
| ObjCAliasDecls[AliasName] = AliasDecl; |
| TUScope->AddDecl(AliasDecl); |
| return AliasDecl; |
| } |
| |
| Sema::DeclTy *Sema::ActOnStartProtocolInterface( |
| SourceLocation AtProtoInterfaceLoc, |
| IdentifierInfo *ProtocolName, SourceLocation ProtocolLoc, |
| IdentifierInfo **ProtoRefNames, unsigned NumProtoRefs, |
| SourceLocation EndProtoLoc) { |
| assert(ProtocolName && "Missing protocol identifier"); |
| ObjCProtocolDecl *PDecl = ObjCProtocols[ProtocolName]; |
| if (PDecl) { |
| // Protocol already seen. Better be a forward protocol declaration |
| if (!PDecl->isForwardDecl()) { |
| Diag(ProtocolLoc, diag::err_duplicate_protocol_def, |
| ProtocolName->getName()); |
| // Just return the protocol we already had. |
| // FIXME: don't leak the objects passed in! |
| return PDecl; |
| } |
| |
| PDecl->setForwardDecl(false); |
| PDecl->AllocReferencedProtocols(NumProtoRefs); |
| } else { |
| PDecl = ObjCProtocolDecl::Create(Context, AtProtoInterfaceLoc, NumProtoRefs, |
| ProtocolName); |
| PDecl->setForwardDecl(false); |
| ObjCProtocols[ProtocolName] = PDecl; |
| } |
| |
| if (NumProtoRefs) { |
| /// Check then save referenced protocols. |
| for (unsigned int i = 0; i != NumProtoRefs; i++) { |
| ObjCProtocolDecl* RefPDecl = ObjCProtocols[ProtoRefNames[i]]; |
| if (!RefPDecl || RefPDecl->isForwardDecl()) |
| Diag(ProtocolLoc, diag::warn_undef_protocolref, |
| ProtoRefNames[i]->getName(), |
| ProtocolName->getName()); |
| PDecl->setReferencedProtocols(i, RefPDecl); |
| } |
| PDecl->setLocEnd(EndProtoLoc); |
| } |
| return PDecl; |
| } |
| |
| /// FindProtocolDeclaration - This routine looks up protocols and |
| /// issuer error if they are not declared. It returns list of protocol |
| /// declarations in its 'Protocols' argument. |
| void |
| Sema::FindProtocolDeclaration(SourceLocation TypeLoc, |
| IdentifierInfo **ProtocolId, |
| unsigned NumProtocols, |
| llvm::SmallVector<DeclTy *,8> &Protocols) { |
| for (unsigned i = 0; i != NumProtocols; ++i) { |
| ObjCProtocolDecl *PDecl = ObjCProtocols[ProtocolId[i]]; |
| if (!PDecl) |
| Diag(TypeLoc, diag::err_undeclared_protocol, |
| ProtocolId[i]->getName()); |
| else |
| Protocols.push_back(PDecl); |
| } |
| } |
| |
| /// DiagnosePropertyMismatch - Compares two properties for their |
| /// attributes and types and warns on a variety of inconsistancies. |
| /// |
| void |
| Sema::DiagnosePropertyMismatch(ObjCPropertyDecl *Property, |
| ObjCPropertyDecl *SuperProperty, |
| const char *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->getName(), inheritedName); |
| if ((CAttr & ObjCPropertyDecl::OBJC_PR_copy) |
| != (SAttr & ObjCPropertyDecl::OBJC_PR_copy)) |
| Diag(Property->getLocation(), diag::warn_property_attribute, |
| Property->getName(), "copy", inheritedName, |
| SourceRange()); |
| else if ((CAttr & ObjCPropertyDecl::OBJC_PR_retain) |
| != (SAttr & ObjCPropertyDecl::OBJC_PR_retain)) |
| Diag(Property->getLocation(), diag::warn_property_attribute, |
| Property->getName(), "retain", inheritedName, |
| SourceRange()); |
| |
| if ((CAttr & ObjCPropertyDecl::OBJC_PR_nonatomic) |
| != (SAttr & ObjCPropertyDecl::OBJC_PR_nonatomic)) |
| Diag(Property->getLocation(), diag::warn_property_attribute, |
| Property->getName(), "atomic", inheritedName, |
| SourceRange()); |
| if (Property->getSetterName() != SuperProperty->getSetterName()) |
| Diag(Property->getLocation(), diag::warn_property_attribute, |
| Property->getName(), "setter", inheritedName, |
| SourceRange()); |
| if (Property->getGetterName() != SuperProperty->getGetterName()) |
| Diag(Property->getLocation(), diag::warn_property_attribute, |
| Property->getName(), "getter", inheritedName, |
| SourceRange()); |
| |
| if (Property->getCanonicalType() != SuperProperty->getCanonicalType()) |
| Diag(Property->getLocation(), diag::warn_property_type, |
| Property->getType().getAsString(), |
| 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; |
| for (ObjCInterfaceDecl::classprop_iterator S = SDecl->classprop_begin(), |
| E = SDecl->classprop_end(); S != E; ++S) { |
| ObjCPropertyDecl *SuperPDecl = (*S); |
| // Does property in super class has declaration in current class? |
| for (ObjCInterfaceDecl::classprop_iterator I = IDecl->classprop_begin(), |
| E = IDecl->classprop_end(); I != E; ++I) { |
| ObjCPropertyDecl *PDecl = (*I); |
| if (SuperPDecl->getIdentifier() == PDecl->getIdentifier()) |
| DiagnosePropertyMismatch(PDecl, SuperPDecl, SDecl->getName()); |
| } |
| } |
| } |
| |
| /// MergeOneProtocolPropertiesIntoClass - This routine goes thru the list |
| /// of properties declared in a protocol and adds them to the list |
| /// of properties for current class if it is not there already. |
| void |
| Sema::MergeOneProtocolPropertiesIntoClass(ObjCInterfaceDecl *IDecl, |
| ObjCProtocolDecl *PDecl) |
| { |
| llvm::SmallVector<ObjCPropertyDecl*, 16> mergeProperties; |
| for (ObjCProtocolDecl::classprop_iterator P = PDecl->classprop_begin(), |
| E = PDecl->classprop_end(); P != E; ++P) { |
| ObjCPropertyDecl *Pr = (*P); |
| ObjCInterfaceDecl::classprop_iterator CP, CE; |
| // Is this property already in class's list of properties? |
| for (CP = IDecl->classprop_begin(), CE = IDecl->classprop_end(); |
| CP != CE; ++CP) |
| if ((*CP)->getIdentifier() == Pr->getIdentifier()) |
| break; |
| if (CP == CE) |
| // Add this property to list of properties for thie class. |
| mergeProperties.push_back(Pr); |
| else |
| // Property protocol already exist in class. Diagnose any mismatch. |
| DiagnosePropertyMismatch((*CP), Pr, PDecl->getName()); |
| } |
| IDecl->mergeProperties(&mergeProperties[0], mergeProperties.size()); |
| } |
| |
| /// MergeProtocolPropertiesIntoClass - This routine merges properties |
| /// declared in 'MergeItsProtocols' objects (which can be a class or an |
| /// inherited protocol into the list of properties for class 'IDecl' |
| /// |
| |
| void |
| Sema::MergeProtocolPropertiesIntoClass(ObjCInterfaceDecl *IDecl, |
| DeclTy *MergeItsProtocols) { |
| Decl *ClassDecl = static_cast<Decl *>(MergeItsProtocols); |
| if (ObjCInterfaceDecl *MDecl = |
| dyn_cast<ObjCInterfaceDecl>(ClassDecl)) { |
| for (ObjCInterfaceDecl::protocol_iterator P = MDecl->protocol_begin(), |
| E = MDecl->protocol_end(); P != E; ++P) |
| MergeOneProtocolPropertiesIntoClass(IDecl, (*P)); |
| // Merge properties of class (*P) into IDECL's |
| ; |
| // Go thru the list of protocols for this class and recursively merge |
| // their properties into this class as well. |
| for (ObjCInterfaceDecl::protocol_iterator P = IDecl->protocol_begin(), |
| E = IDecl->protocol_end(); P != E; ++P) |
| MergeProtocolPropertiesIntoClass(IDecl, (*P)); |
| } |
| else if (ObjCProtocolDecl *MDecl = |
| dyn_cast<ObjCProtocolDecl>(ClassDecl)) |
| for (ObjCProtocolDecl::protocol_iterator P = MDecl->protocol_begin(), |
| E = MDecl->protocol_end(); P != E; ++P) |
| MergeOneProtocolPropertiesIntoClass(IDecl, (*P)); |
| else |
| assert(false && "MergeProtocolPropertiesIntoClass - bad object kind"); |
| } |
| |
| /// ActOnForwardProtocolDeclaration - |
| Action::DeclTy * |
| Sema::ActOnForwardProtocolDeclaration(SourceLocation AtProtocolLoc, |
| IdentifierInfo **IdentList, unsigned NumElts) { |
| llvm::SmallVector<ObjCProtocolDecl*, 32> Protocols; |
| |
| for (unsigned i = 0; i != NumElts; ++i) { |
| IdentifierInfo *Ident = IdentList[i]; |
| ObjCProtocolDecl *&PDecl = ObjCProtocols[Ident]; |
| if (PDecl == 0) { // Not already seen? |
| // FIXME: Pass in the location of the identifier! |
| PDecl = ObjCProtocolDecl::Create(Context, AtProtocolLoc, 0, Ident); |
| } |
| |
| Protocols.push_back(PDecl); |
| } |
| return ObjCForwardProtocolDecl::Create(Context, AtProtocolLoc, |
| &Protocols[0], Protocols.size()); |
| } |
| |
| Sema::DeclTy *Sema::ActOnStartCategoryInterface( |
| SourceLocation AtInterfaceLoc, |
| IdentifierInfo *ClassName, SourceLocation ClassLoc, |
| IdentifierInfo *CategoryName, SourceLocation CategoryLoc, |
| IdentifierInfo **ProtoRefNames, unsigned NumProtoRefs, |
| SourceLocation EndProtoLoc) { |
| ObjCInterfaceDecl *IDecl = getObjCInterfaceDecl(ClassName); |
| |
| ObjCCategoryDecl *CDecl = |
| ObjCCategoryDecl::Create(Context, AtInterfaceLoc, CategoryName); |
| CDecl->setClassInterface(IDecl); |
| |
| /// Check that class of this category is already completely declared. |
| if (!IDecl || IDecl->isForwardDecl()) |
| Diag(ClassLoc, diag::err_undef_interface, ClassName->getName()); |
| else { |
| /// Check for duplicate interface declaration for this category |
| ObjCCategoryDecl *CDeclChain; |
| for (CDeclChain = IDecl->getCategoryList(); CDeclChain; |
| CDeclChain = CDeclChain->getNextClassCategory()) { |
| if (CDeclChain->getIdentifier() == CategoryName) { |
| Diag(CategoryLoc, diag::err_dup_category_def, ClassName->getName(), |
| CategoryName->getName()); |
| break; |
| } |
| } |
| if (!CDeclChain) |
| CDecl->insertNextClassCategory(); |
| } |
| |
| if (NumProtoRefs) { |
| llvm::SmallVector<ObjCProtocolDecl*, 32> RefProtocols; |
| /// Check and then save the referenced protocols. |
| for (unsigned int i = 0; i != NumProtoRefs; i++) { |
| ObjCProtocolDecl* RefPDecl = ObjCProtocols[ProtoRefNames[i]]; |
| if (!RefPDecl || RefPDecl->isForwardDecl()) { |
| Diag(CategoryLoc, diag::warn_undef_protocolref, |
| ProtoRefNames[i]->getName(), |
| CategoryName->getName()); |
| } |
| if (RefPDecl) |
| RefProtocols.push_back(RefPDecl); |
| } |
| if (!RefProtocols.empty()) |
| CDecl->setReferencedProtocolList(&RefProtocols[0], RefProtocols.size()); |
| } |
| CDecl->setLocEnd(EndProtoLoc); |
| return CDecl; |
| } |
| |
| /// ActOnStartCategoryImplementation - Perform semantic checks on the |
| /// category implementation declaration and build an ObjCCategoryImplDecl |
| /// object. |
| Sema::DeclTy *Sema::ActOnStartCategoryImplementation( |
| SourceLocation AtCatImplLoc, |
| IdentifierInfo *ClassName, SourceLocation ClassLoc, |
| IdentifierInfo *CatName, SourceLocation CatLoc) { |
| ObjCInterfaceDecl *IDecl = getObjCInterfaceDecl(ClassName); |
| ObjCCategoryImplDecl *CDecl = |
| ObjCCategoryImplDecl::Create(Context, AtCatImplLoc, CatName, IDecl); |
| /// Check that class of this category is already completely declared. |
| if (!IDecl || IDecl->isForwardDecl()) |
| Diag(ClassLoc, diag::err_undef_interface, ClassName->getName()); |
| |
| /// TODO: Check that CatName, category name, is not used in another |
| // implementation. |
| return CDecl; |
| } |
| |
| Sema::DeclTy *Sema::ActOnStartClassImplementation( |
| SourceLocation AtClassImplLoc, |
| IdentifierInfo *ClassName, SourceLocation ClassLoc, |
| IdentifierInfo *SuperClassname, |
| SourceLocation SuperClassLoc) { |
| ObjCInterfaceDecl* IDecl = 0; |
| // Check for another declaration kind with the same name. |
| Decl *PrevDecl = LookupDecl(ClassName, Decl::IDNS_Ordinary, TUScope); |
| if (PrevDecl && !isa<ObjCInterfaceDecl>(PrevDecl)) { |
| Diag(ClassLoc, diag::err_redefinition_different_kind, |
| ClassName->getName()); |
| Diag(PrevDecl->getLocation(), diag::err_previous_definition); |
| } |
| else { |
| // Is there an interface declaration of this class; if not, warn! |
| IDecl = dyn_cast_or_null<ObjCInterfaceDecl>(PrevDecl); |
| if (!IDecl) |
| Diag(ClassLoc, diag::warn_undef_interface, ClassName->getName()); |
| } |
| |
| // Check that super class name is valid class name |
| ObjCInterfaceDecl* SDecl = 0; |
| if (SuperClassname) { |
| // Check if a different kind of symbol declared in this scope. |
| PrevDecl = LookupDecl(SuperClassname, Decl::IDNS_Ordinary, TUScope); |
| if (PrevDecl && !isa<ObjCInterfaceDecl>(PrevDecl)) { |
| Diag(SuperClassLoc, diag::err_redefinition_different_kind, |
| SuperClassname->getName()); |
| Diag(PrevDecl->getLocation(), diag::err_previous_definition); |
| } |
| else { |
| SDecl = dyn_cast_or_null<ObjCInterfaceDecl>(PrevDecl); |
| if (!SDecl) |
| Diag(SuperClassLoc, diag::err_undef_superclass, |
| SuperClassname->getName(), ClassName->getName()); |
| else if (IDecl && IDecl->getSuperClass() != SDecl) { |
| // This implementation and its interface do not have the same |
| // super class. |
| Diag(SuperClassLoc, diag::err_conflicting_super_class, |
| SDecl->getName()); |
| Diag(SDecl->getLocation(), diag::err_previous_definition); |
| } |
| } |
| } |
| |
| if (!IDecl) { |
| // Legacy case of @implementation with no corresponding @interface. |
| // Build, chain & install the interface decl into the identifier. |
| IDecl = ObjCInterfaceDecl::Create(Context, AtClassImplLoc, 0, ClassName, |
| ClassLoc, false, true); |
| ObjCInterfaceDecls[ClassName] = IDecl; |
| IDecl->setSuperClass(SDecl); |
| IDecl->setLocEnd(ClassLoc); |
| |
| // Remember that this needs to be removed when the scope is popped. |
| TUScope->AddDecl(IDecl); |
| } |
| |
| ObjCImplementationDecl* IMPDecl = |
| ObjCImplementationDecl::Create(Context, AtClassImplLoc, ClassName, |
| IDecl, SDecl); |
| |
| // Check that there is no duplicate implementation of this class. |
| if (ObjCImplementations[ClassName]) |
| // FIXME: Don't leak everything! |
| Diag(ClassLoc, diag::err_dup_implementation_class, ClassName->getName()); |
| else // add it to the list. |
| ObjCImplementations[ClassName] = IMPDecl; |
| return IMPDecl; |
| } |
| |
| void Sema::CheckImplementationIvars(ObjCImplementationDecl *ImpDecl, |
| ObjCIvarDecl **ivars, unsigned numIvars, |
| SourceLocation RBrace) { |
| assert(ImpDecl && "missing implementation decl"); |
| ObjCInterfaceDecl* IDecl = getObjCInterfaceDecl(ImpDecl->getIdentifier()); |
| if (!IDecl) |
| return; |
| /// Check case of non-existing @interface decl. |
| /// (legacy objective-c @implementation decl without an @interface decl). |
| /// Add implementations's ivar to the synthesize class's ivar list. |
| if (IDecl->ImplicitInterfaceDecl()) { |
| IDecl->addInstanceVariablesToClass(ivars, numIvars, RBrace); |
| return; |
| } |
| // If implementation has empty ivar list, just return. |
| if (numIvars == 0) |
| return; |
| |
| assert(ivars && "missing @implementation ivars"); |
| |
| // Check interface's Ivar list against those in the implementation. |
| // names and types must match. |
| // |
| unsigned j = 0; |
| ObjCInterfaceDecl::ivar_iterator |
| IVI = IDecl->ivar_begin(), IVE = IDecl->ivar_end(); |
| for (; numIvars > 0 && IVI != IVE; ++IVI) { |
| ObjCIvarDecl* ImplIvar = ivars[j++]; |
| ObjCIvarDecl* ClsIvar = *IVI; |
| assert (ImplIvar && "missing implementation ivar"); |
| assert (ClsIvar && "missing class ivar"); |
| if (ImplIvar->getCanonicalType() != ClsIvar->getCanonicalType()) { |
| Diag(ImplIvar->getLocation(), diag::err_conflicting_ivar_type, |
| ImplIvar->getIdentifier()->getName()); |
| Diag(ClsIvar->getLocation(), diag::err_previous_definition, |
| ClsIvar->getIdentifier()->getName()); |
| } |
| // TODO: Two mismatched (unequal width) Ivar bitfields should be diagnosed |
| // as error. |
| else if (ImplIvar->getIdentifier() != ClsIvar->getIdentifier()) { |
| Diag(ImplIvar->getLocation(), diag::err_conflicting_ivar_name, |
| ImplIvar->getIdentifier()->getName()); |
| Diag(ClsIvar->getLocation(), diag::err_previous_definition, |
| ClsIvar->getIdentifier()->getName()); |
| return; |
| } |
| --numIvars; |
| } |
| |
| if (numIvars > 0) |
| Diag(ivars[j]->getLocation(), diag::err_inconsistant_ivar_count); |
| else if (IVI != IVE) |
| Diag((*IVI)->getLocation(), diag::err_inconsistant_ivar_count); |
| } |
| |
| void Sema::WarnUndefinedMethod(SourceLocation ImpLoc, ObjCMethodDecl *method, |
| bool &IncompleteImpl) { |
| if (!IncompleteImpl) { |
| Diag(ImpLoc, diag::warn_incomplete_impl); |
| IncompleteImpl = true; |
| } |
| Diag(ImpLoc, diag::warn_undef_method_impl, method->getSelector().getName()); |
| } |
| |
| /// CheckProtocolMethodDefs - This routine checks unimplemented methods |
| /// Declared in protocol, and those referenced by it. |
| void Sema::CheckProtocolMethodDefs(SourceLocation ImpLoc, |
| ObjCProtocolDecl *PDecl, |
| bool& IncompleteImpl, |
| const llvm::DenseSet<Selector> &InsMap, |
| const llvm::DenseSet<Selector> &ClsMap) { |
| // check unimplemented instance methods. |
| for (ObjCProtocolDecl::instmeth_iterator I = PDecl->instmeth_begin(), |
| E = PDecl->instmeth_end(); I != E; ++I) { |
| ObjCMethodDecl *method = *I; |
| if (!InsMap.count(method->getSelector()) && |
| method->getImplementationControl() != ObjCMethodDecl::Optional) |
| WarnUndefinedMethod(ImpLoc, method, IncompleteImpl); |
| } |
| // check unimplemented class methods |
| for (ObjCProtocolDecl::classmeth_iterator I = PDecl->classmeth_begin(), |
| E = PDecl->classmeth_end(); I != E; ++I) { |
| ObjCMethodDecl *method = *I; |
| if (!ClsMap.count(method->getSelector()) && |
| method->getImplementationControl() != ObjCMethodDecl::Optional) |
| WarnUndefinedMethod(ImpLoc, method, IncompleteImpl); |
| } |
| // Check on this protocols's referenced protocols, recursively |
| ObjCProtocolDecl** RefPDecl = PDecl->getReferencedProtocols(); |
| for (unsigned i = 0; i < PDecl->getNumReferencedProtocols(); i++) |
| CheckProtocolMethodDefs(ImpLoc, RefPDecl[i], IncompleteImpl, InsMap, ClsMap); |
| } |
| |
| void Sema::ImplMethodsVsClassMethods(ObjCImplementationDecl* IMPDecl, |
| ObjCInterfaceDecl* IDecl) { |
| llvm::DenseSet<Selector> InsMap; |
| // Check and see if instance methods in class interface have been |
| // implemented in the implementation class. |
| for (ObjCImplementationDecl::instmeth_iterator I = IMPDecl->instmeth_begin(), |
| E = IMPDecl->instmeth_end(); I != E; ++I) |
| InsMap.insert((*I)->getSelector()); |
| |
| bool IncompleteImpl = false; |
| for (ObjCInterfaceDecl::instmeth_iterator I = IDecl->instmeth_begin(), |
| E = IDecl->instmeth_end(); I != E; ++I) |
| if (!(*I)->isSynthesized() && !InsMap.count((*I)->getSelector())) |
| WarnUndefinedMethod(IMPDecl->getLocation(), *I, IncompleteImpl); |
| |
| llvm::DenseSet<Selector> ClsMap; |
| // Check and see if class methods in class interface have been |
| // implemented in the implementation class. |
| for (ObjCImplementationDecl::classmeth_iterator I =IMPDecl->classmeth_begin(), |
| E = IMPDecl->classmeth_end(); I != E; ++I) |
| ClsMap.insert((*I)->getSelector()); |
| |
| for (ObjCInterfaceDecl::classmeth_iterator I = IDecl->classmeth_begin(), |
| E = IDecl->classmeth_end(); I != E; ++I) |
| if (!ClsMap.count((*I)->getSelector())) |
| WarnUndefinedMethod(IMPDecl->getLocation(), *I, IncompleteImpl); |
| |
| // Check the protocol list for unimplemented methods in the @implementation |
| // class. |
| ObjCProtocolDecl** protocols = IDecl->getReferencedProtocols(); |
| for (unsigned i = 0; i < IDecl->getNumIntfRefProtocols(); i++) |
| CheckProtocolMethodDefs(IMPDecl->getLocation(), protocols[i], |
| IncompleteImpl, InsMap, ClsMap); |
| } |
| |
| /// ImplCategoryMethodsVsIntfMethods - Checks that methods declared in the |
| /// category interface is implemented in the category @implementation. |
| void Sema::ImplCategoryMethodsVsIntfMethods(ObjCCategoryImplDecl *CatImplDecl, |
| ObjCCategoryDecl *CatClassDecl) { |
| llvm::DenseSet<Selector> InsMap; |
| // Check and see if instance methods in category interface have been |
| // implemented in its implementation class. |
| for (ObjCCategoryImplDecl::instmeth_iterator I =CatImplDecl->instmeth_begin(), |
| E = CatImplDecl->instmeth_end(); I != E; ++I) |
| InsMap.insert((*I)->getSelector()); |
| |
| bool IncompleteImpl = false; |
| for (ObjCCategoryDecl::instmeth_iterator I = CatClassDecl->instmeth_begin(), |
| E = CatClassDecl->instmeth_end(); I != E; ++I) |
| if (!InsMap.count((*I)->getSelector())) |
| WarnUndefinedMethod(CatImplDecl->getLocation(), *I, IncompleteImpl); |
| |
| llvm::DenseSet<Selector> ClsMap; |
| // Check and see if class methods in category interface have been |
| // implemented in its implementation class. |
| for (ObjCCategoryImplDecl::classmeth_iterator |
| I = CatImplDecl->classmeth_begin(), E = CatImplDecl->classmeth_end(); |
| I != E; ++I) |
| ClsMap.insert((*I)->getSelector()); |
| |
| for (ObjCCategoryDecl::classmeth_iterator I = CatClassDecl->classmeth_begin(), |
| E = CatClassDecl->classmeth_end(); I != E; ++I) |
| if (!ClsMap.count((*I)->getSelector())) |
| WarnUndefinedMethod(CatImplDecl->getLocation(), *I, IncompleteImpl); |
| |
| // Check the protocol list for unimplemented methods in the @implementation |
| // class. |
| ObjCProtocolDecl** protocols = CatClassDecl->getReferencedProtocols(); |
| for (unsigned i = 0; i < CatClassDecl->getNumReferencedProtocols(); i++) { |
| ObjCProtocolDecl* PDecl = protocols[i]; |
| CheckProtocolMethodDefs(CatImplDecl->getLocation(), PDecl, IncompleteImpl, |
| InsMap, ClsMap); |
| } |
| } |
| |
| /// ActOnForwardClassDeclaration - |
| Action::DeclTy * |
| Sema::ActOnForwardClassDeclaration(SourceLocation AtClassLoc, |
| IdentifierInfo **IdentList, unsigned NumElts) |
| { |
| llvm::SmallVector<ObjCInterfaceDecl*, 32> Interfaces; |
| |
| for (unsigned i = 0; i != NumElts; ++i) { |
| // Check for another declaration kind with the same name. |
| Decl *PrevDecl = LookupDecl(IdentList[i], Decl::IDNS_Ordinary, TUScope); |
| if (PrevDecl && !isa<ObjCInterfaceDecl>(PrevDecl)) { |
| Diag(AtClassLoc, diag::err_redefinition_different_kind, |
| IdentList[i]->getName()); |
| Diag(PrevDecl->getLocation(), diag::err_previous_definition); |
| } |
| ObjCInterfaceDecl *IDecl = dyn_cast_or_null<ObjCInterfaceDecl>(PrevDecl); |
| if (!IDecl) { // Not already seen? Make a forward decl. |
| IDecl = ObjCInterfaceDecl::Create(Context, AtClassLoc, 0, IdentList[i], |
| SourceLocation(), true); |
| ObjCInterfaceDecls[IdentList[i]] = IDecl; |
| |
| // Remember that this needs to be removed when the scope is popped. |
| TUScope->AddDecl(IDecl); |
| } |
| |
| Interfaces.push_back(IDecl); |
| } |
| |
| return ObjCClassDecl::Create(Context, AtClassLoc, |
| &Interfaces[0], Interfaces.size()); |
| } |
| |
| |
| /// MatchTwoMethodDeclarations - Checks that two methods have matching type and |
| /// returns true, or false, accordingly. |
| /// TODO: Handle protocol list; such as id<p1,p2> in type comparisons |
| bool Sema::MatchTwoMethodDeclarations(const ObjCMethodDecl *Method, |
| const ObjCMethodDecl *PrevMethod) { |
| if (Method->getResultType().getCanonicalType() != |
| PrevMethod->getResultType().getCanonicalType()) |
| return false; |
| for (unsigned i = 0, e = Method->getNumParams(); i != e; ++i) { |
| ParmVarDecl *ParamDecl = Method->getParamDecl(i); |
| ParmVarDecl *PrevParamDecl = PrevMethod->getParamDecl(i); |
| if (Context.getCanonicalType(ParamDecl->getType()) != |
| Context.getCanonicalType(PrevParamDecl->getType())) |
| return false; |
| } |
| return true; |
| } |
| |
| void Sema::AddInstanceMethodToGlobalPool(ObjCMethodDecl *Method) { |
| ObjCMethodList &FirstMethod = InstanceMethodPool[Method->getSelector()]; |
| if (!FirstMethod.Method) { |
| // Haven't seen a method with this selector name yet - add it. |
| FirstMethod.Method = Method; |
| FirstMethod.Next = 0; |
| } else { |
| // We've seen a method with this name, now check the type signature(s). |
| bool match = MatchTwoMethodDeclarations(Method, FirstMethod.Method); |
| |
| for (ObjCMethodList *Next = FirstMethod.Next; !match && Next; |
| Next = Next->Next) |
| match = MatchTwoMethodDeclarations(Method, Next->Method); |
| |
| if (!match) { |
| // We have a new signature for an existing method - add it. |
| // This is extremely rare. Only 1% of Cocoa selectors are "overloaded". |
| struct ObjCMethodList *OMI = new ObjCMethodList(Method, FirstMethod.Next); |
| FirstMethod.Next = OMI; |
| } |
| } |
| } |
| |
| void Sema::AddFactoryMethodToGlobalPool(ObjCMethodDecl *Method) { |
| ObjCMethodList &FirstMethod = FactoryMethodPool[Method->getSelector()]; |
| if (!FirstMethod.Method) { |
| // Haven't seen a method with this selector name yet - add it. |
| FirstMethod.Method = Method; |
| FirstMethod.Next = 0; |
| } else { |
| // We've seen a method with this name, now check the type signature(s). |
| bool match = MatchTwoMethodDeclarations(Method, FirstMethod.Method); |
| |
| for (ObjCMethodList *Next = FirstMethod.Next; !match && Next; |
| Next = Next->Next) |
| match = MatchTwoMethodDeclarations(Method, Next->Method); |
| |
| if (!match) { |
| // We have a new signature for an existing method - add it. |
| // This is extremely rare. Only 1% of Cocoa selectors are "overloaded". |
| struct ObjCMethodList *OMI = new ObjCMethodList(Method, FirstMethod.Next); |
| FirstMethod.Next = OMI; |
| } |
| } |
| } |
| |
| // Note: For class/category implemenations, allMethods/allProperties is |
| // always null. |
| void Sema::ActOnAtEnd(SourceLocation AtEndLoc, DeclTy *classDecl, |
| DeclTy **allMethods, unsigned allNum, |
| DeclTy **allProperties, unsigned pNum) { |
| Decl *ClassDecl = static_cast<Decl *>(classDecl); |
| |
| // FIXME: If we don't have a ClassDecl, we have an error. We should consider |
| // always passing in a decl. If the decl has an error, isInvalidDecl() |
| // should be true. |
| if (!ClassDecl) |
| return; |
| |
| llvm::SmallVector<ObjCMethodDecl*, 32> insMethods; |
| llvm::SmallVector<ObjCMethodDecl*, 16> clsMethods; |
| |
| llvm::DenseMap<Selector, const ObjCMethodDecl*> InsMap; |
| llvm::DenseMap<Selector, const ObjCMethodDecl*> ClsMap; |
| |
| bool isInterfaceDeclKind = |
| isa<ObjCInterfaceDecl>(ClassDecl) || isa<ObjCCategoryDecl>(ClassDecl) |
| || isa<ObjCProtocolDecl>(ClassDecl); |
| bool checkIdenticalMethods = isa<ObjCImplementationDecl>(ClassDecl); |
| |
| if (pNum != 0) |
| if (ObjCInterfaceDecl *IDecl = dyn_cast<ObjCInterfaceDecl>(ClassDecl)) |
| IDecl->addProperties((ObjCPropertyDecl**)allProperties, pNum); |
| else if (ObjCCategoryDecl *CDecl = dyn_cast<ObjCCategoryDecl>(ClassDecl)) |
| CDecl->addProperties((ObjCPropertyDecl**)allProperties, pNum); |
| else if (ObjCProtocolDecl *PDecl = dyn_cast<ObjCProtocolDecl>(ClassDecl)) |
| PDecl->addProperties((ObjCPropertyDecl**)allProperties, pNum); |
| else |
| assert(false && "ActOnAtEnd - property declaration misplaced"); |
| |
| for (unsigned i = 0; i < allNum; i++ ) { |
| ObjCMethodDecl *Method = |
| cast_or_null<ObjCMethodDecl>(static_cast<Decl*>(allMethods[i])); |
| |
| if (!Method) continue; // Already issued a diagnostic. |
| if (Method->isInstance()) { |
| /// Check for instance method of the same name with incompatible types |
| const ObjCMethodDecl *&PrevMethod = InsMap[Method->getSelector()]; |
| bool match = PrevMethod ? MatchTwoMethodDeclarations(Method, PrevMethod) |
| : false; |
| if (isInterfaceDeclKind && PrevMethod && !match |
| || checkIdenticalMethods && match) { |
| Diag(Method->getLocation(), diag::error_duplicate_method_decl, |
| Method->getSelector().getName()); |
| Diag(PrevMethod->getLocation(), diag::err_previous_declaration); |
| } else { |
| insMethods.push_back(Method); |
| InsMap[Method->getSelector()] = Method; |
| /// The following allows us to typecheck messages to "id". |
| AddInstanceMethodToGlobalPool(Method); |
| } |
| } |
| else { |
| /// Check for class method of the same name with incompatible types |
| const ObjCMethodDecl *&PrevMethod = ClsMap[Method->getSelector()]; |
| bool match = PrevMethod ? MatchTwoMethodDeclarations(Method, PrevMethod) |
| : false; |
| if (isInterfaceDeclKind && PrevMethod && !match |
| || checkIdenticalMethods && match) { |
| Diag(Method->getLocation(), diag::error_duplicate_method_decl, |
| Method->getSelector().getName()); |
| Diag(PrevMethod->getLocation(), diag::err_previous_declaration); |
| } else { |
| clsMethods.push_back(Method); |
| ClsMap[Method->getSelector()] = Method; |
| /// The following allows us to typecheck messages to "Class". |
| AddFactoryMethodToGlobalPool(Method); |
| } |
| } |
| } |
| |
| if (ObjCInterfaceDecl *I = dyn_cast<ObjCInterfaceDecl>(ClassDecl)) { |
| // Compares properties declaraed in this class to those of its |
| // super class. |
| ComparePropertiesInBaseAndSuper(I); |
| MergeProtocolPropertiesIntoClass(I, I); |
| for (ObjCInterfaceDecl::classprop_iterator P = I->classprop_begin(), |
| E = I->classprop_end(); P != E; ++P) { |
| // FIXME: It would be really nice if we could avoid this. Injecting |
| // methods into the interface makes it hard to distinguish "real" methods |
| // from synthesized "property" methods (that aren't in the source). |
| // This complicicates the rewriter's life. |
| I->addPropertyMethods(Context, *P, insMethods); |
| } |
| I->addMethods(&insMethods[0], insMethods.size(), |
| &clsMethods[0], clsMethods.size(), AtEndLoc); |
| |
| } else if (ObjCProtocolDecl *P = dyn_cast<ObjCProtocolDecl>(ClassDecl)) { |
| P->addMethods(&insMethods[0], insMethods.size(), |
| &clsMethods[0], clsMethods.size(), AtEndLoc); |
| } |
| else if (ObjCCategoryDecl *C = dyn_cast<ObjCCategoryDecl>(ClassDecl)) { |
| C->addMethods(&insMethods[0], insMethods.size(), |
| &clsMethods[0], clsMethods.size(), AtEndLoc); |
| } |
| else if (ObjCImplementationDecl *IC = |
| dyn_cast<ObjCImplementationDecl>(ClassDecl)) { |
| IC->setLocEnd(AtEndLoc); |
| if (ObjCInterfaceDecl* IDecl = getObjCInterfaceDecl(IC->getIdentifier())) |
| ImplMethodsVsClassMethods(IC, IDecl); |
| } else { |
| ObjCCategoryImplDecl* CatImplClass = cast<ObjCCategoryImplDecl>(ClassDecl); |
| CatImplClass->setLocEnd(AtEndLoc); |
| ObjCInterfaceDecl* IDecl = CatImplClass->getClassInterface(); |
| // Find category interface decl and then check that all methods declared |
| // in this interface is implemented in the category @implementation. |
| if (IDecl) { |
| for (ObjCCategoryDecl *Categories = IDecl->getCategoryList(); |
| Categories; Categories = Categories->getNextClassCategory()) { |
| if (Categories->getIdentifier() == CatImplClass->getIdentifier()) { |
| ImplCategoryMethodsVsIntfMethods(CatImplClass, Categories); |
| break; |
| } |
| } |
| } |
| } |
| } |
| |
| |
| /// CvtQTToAstBitMask - utility routine to produce an AST bitmask for |
| /// objective-c's type qualifier from the parser version of the same info. |
| static Decl::ObjCDeclQualifier |
| CvtQTToAstBitMask(ObjCDeclSpec::ObjCDeclQualifier PQTVal) { |
| Decl::ObjCDeclQualifier ret = Decl::OBJC_TQ_None; |
| if (PQTVal & ObjCDeclSpec::DQ_In) |
| ret = (Decl::ObjCDeclQualifier)(ret | Decl::OBJC_TQ_In); |
| if (PQTVal & ObjCDeclSpec::DQ_Inout) |
| ret = (Decl::ObjCDeclQualifier)(ret | Decl::OBJC_TQ_Inout); |
| if (PQTVal & ObjCDeclSpec::DQ_Out) |
| ret = (Decl::ObjCDeclQualifier)(ret | Decl::OBJC_TQ_Out); |
| if (PQTVal & ObjCDeclSpec::DQ_Bycopy) |
| ret = (Decl::ObjCDeclQualifier)(ret | Decl::OBJC_TQ_Bycopy); |
| if (PQTVal & ObjCDeclSpec::DQ_Byref) |
| ret = (Decl::ObjCDeclQualifier)(ret | Decl::OBJC_TQ_Byref); |
| if (PQTVal & ObjCDeclSpec::DQ_Oneway) |
| ret = (Decl::ObjCDeclQualifier)(ret | Decl::OBJC_TQ_Oneway); |
| |
| return ret; |
| } |
| |
| Sema::DeclTy *Sema::ActOnMethodDeclaration( |
| SourceLocation MethodLoc, SourceLocation EndLoc, |
| tok::TokenKind MethodType, DeclTy *classDecl, |
| ObjCDeclSpec &ReturnQT, TypeTy *ReturnType, |
| Selector Sel, |
| // optional arguments. The number of types/arguments is obtained |
| // from the Sel.getNumArgs(). |
| ObjCDeclSpec *ArgQT, TypeTy **ArgTypes, IdentifierInfo **ArgNames, |
| AttributeList *AttrList, tok::ObjCKeywordKind MethodDeclKind, |
| bool isVariadic) { |
| Decl *ClassDecl = static_cast<Decl*>(classDecl); |
| |
| // Make sure we can establish a context for the method. |
| if (!ClassDecl) { |
| Diag(MethodLoc, diag::error_missing_method_context); |
| return 0; |
| } |
| QualType resultDeclType; |
| |
| if (ReturnType) |
| resultDeclType = QualType::getFromOpaquePtr(ReturnType); |
| else // get the type for "id". |
| resultDeclType = Context.getObjCIdType(); |
| |
| ObjCMethodDecl* ObjCMethod = |
| ObjCMethodDecl::Create(Context, MethodLoc, EndLoc, Sel, resultDeclType, |
| ClassDecl, AttrList, |
| MethodType == tok::minus, isVariadic, |
| false, |
| MethodDeclKind == tok::objc_optional ? |
| ObjCMethodDecl::Optional : |
| ObjCMethodDecl::Required); |
| |
| llvm::SmallVector<ParmVarDecl*, 16> Params; |
| |
| for (unsigned i = 0; i < Sel.getNumArgs(); i++) { |
| // FIXME: arg->AttrList must be stored too! |
| QualType argType; |
| |
| if (ArgTypes[i]) |
| argType = QualType::getFromOpaquePtr(ArgTypes[i]); |
| else |
| argType = Context.getObjCIdType(); |
| ParmVarDecl* Param = ParmVarDecl::Create(Context, ObjCMethod, |
| SourceLocation(/*FIXME*/), |
| ArgNames[i], argType, |
| VarDecl::None, 0, 0); |
| Param->setObjCDeclQualifier( |
| CvtQTToAstBitMask(ArgQT[i].getObjCDeclQualifier())); |
| Params.push_back(Param); |
| } |
| |
| ObjCMethod->setMethodParams(&Params[0], Sel.getNumArgs()); |
| ObjCMethod->setObjCDeclQualifier( |
| CvtQTToAstBitMask(ReturnQT.getObjCDeclQualifier())); |
| const ObjCMethodDecl *PrevMethod = 0; |
| |
| // For implementations (which can be very "coarse grain"), we add the |
| // method now. This allows the AST to implement lookup methods that work |
| // incrementally (without waiting until we parse the @end). It also allows |
| // us to flag multiple declaration errors as they occur. |
| if (ObjCImplementationDecl *ImpDecl = |
| dyn_cast<ObjCImplementationDecl>(ClassDecl)) { |
| if (MethodType == tok::minus) { |
| PrevMethod = ImpDecl->getInstanceMethod(Sel); |
| ImpDecl->addInstanceMethod(ObjCMethod); |
| } else { |
| PrevMethod = ImpDecl->getClassMethod(Sel); |
| ImpDecl->addClassMethod(ObjCMethod); |
| } |
| } |
| else if (ObjCCategoryImplDecl *CatImpDecl = |
| dyn_cast<ObjCCategoryImplDecl>(ClassDecl)) { |
| if (MethodType == tok::minus) { |
| PrevMethod = CatImpDecl->getInstanceMethod(Sel); |
| CatImpDecl->addInstanceMethod(ObjCMethod); |
| } else { |
| PrevMethod = CatImpDecl->getClassMethod(Sel); |
| CatImpDecl->addClassMethod(ObjCMethod); |
| } |
| } |
| if (PrevMethod) { |
| // You can never have two method definitions with the same name. |
| Diag(ObjCMethod->getLocation(), diag::error_duplicate_method_decl, |
| ObjCMethod->getSelector().getName()); |
| Diag(PrevMethod->getLocation(), diag::err_previous_declaration); |
| } |
| return ObjCMethod; |
| } |
| |
| Sema::DeclTy *Sema::ActOnProperty(Scope *S, SourceLocation AtLoc, |
| FieldDeclarator &FD, |
| ObjCDeclSpec &ODS, |
| Selector GetterSel, |
| Selector SetterSel, |
| tok::ObjCKeywordKind MethodImplKind) { |
| QualType T = GetTypeForDeclarator(FD.D, S); |
| ObjCPropertyDecl *PDecl = ObjCPropertyDecl::Create(Context, AtLoc, |
| FD.D.getIdentifier(), T); |
| // 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 (ODS.getPropertyAttributes() & ObjCDeclSpec::DQ_PR_readonly) |
| PDecl->setPropertyAttributes(ObjCPropertyDecl::OBJC_PR_readonly); |
| |
| if (ODS.getPropertyAttributes() & ObjCDeclSpec::DQ_PR_getter) |
| PDecl->setPropertyAttributes(ObjCPropertyDecl::OBJC_PR_getter); |
| |
| if (ODS.getPropertyAttributes() & ObjCDeclSpec::DQ_PR_setter) |
| PDecl->setPropertyAttributes(ObjCPropertyDecl::OBJC_PR_setter); |
| |
| if (ODS.getPropertyAttributes() & ObjCDeclSpec::DQ_PR_assign) |
| PDecl->setPropertyAttributes(ObjCPropertyDecl::OBJC_PR_assign); |
| |
| if (ODS.getPropertyAttributes() & ObjCDeclSpec::DQ_PR_readwrite) |
| PDecl->setPropertyAttributes(ObjCPropertyDecl::OBJC_PR_readwrite); |
| |
| if (ODS.getPropertyAttributes() & ObjCDeclSpec::DQ_PR_retain) |
| PDecl->setPropertyAttributes(ObjCPropertyDecl::OBJC_PR_retain); |
| |
| if (ODS.getPropertyAttributes() & ObjCDeclSpec::DQ_PR_copy) |
| PDecl->setPropertyAttributes(ObjCPropertyDecl::OBJC_PR_copy); |
| |
| if (ODS.getPropertyAttributes() & 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); |
| |
| return PDecl; |
| } |
| |
| /// ActOnPropertyImplDecl - This routine performs semantic checks and |
| /// builds the AST node for a property implementation declaration; declared |
| /// as @synthesize or @dynamic. |
| /// |
| Sema::DeclTy *Sema::ActOnPropertyImplDecl(SourceLocation AtLoc, |
| SourceLocation PropertyLoc, |
| bool Synthesize, |
| DeclTy *ClassCatImpDecl, |
| IdentifierInfo *PropertyId, |
| IdentifierInfo *PropertyIvar) { |
| Decl *ClassImpDecl = static_cast<Decl*>(ClassCatImpDecl); |
| // Make sure we have a context for the property implementation declaration. |
| if (!ClassImpDecl) { |
| Diag(AtLoc, diag::error_missing_property_context); |
| return 0; |
| } |
| 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 = getObjCInterfaceDecl(IC->getIdentifier()); |
| // 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->getName()); |
| return 0; |
| } |
| } |
| else if ((CatImplClass = dyn_cast<ObjCCategoryImplDecl>(ClassImpDecl))) { |
| if (Synthesize) { |
| Diag(AtLoc, diag::error_synthesize_category_decl); |
| return 0; |
| } |
| IDecl = CatImplClass->getClassInterface(); |
| if (!IDecl) { |
| Diag(AtLoc, diag::error_missing_property_interface); |
| return 0; |
| } |
| 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 0; |
| // Look for this property declaration in @implementation's category |
| property = Category->FindPropertyDeclaration(PropertyId); |
| if (!property) { |
| Diag(PropertyLoc, diag::error_bad_category_property_decl, |
| Category->getName()); |
| return 0; |
| } |
| } |
| else { |
| Diag(AtLoc, diag::error_bad_property_context); |
| return 0; |
| } |
| ObjCIvarDecl *Ivar = 0; |
| // Check that we have a valid, previously declared ivar for @synthesize |
| if (Synthesize) { |
| // @synthesize |
| if (!PropertyIvar) |
| PropertyIvar = PropertyId; |
| // Check that this is a previously declared 'ivar' in 'IDecl' interface |
| Ivar = IDecl->FindIvarDeclaration(PropertyIvar); |
| if (!Ivar) { |
| Diag(PropertyLoc, diag::error_missing_property_ivar_decl, |
| PropertyId->getName()); |
| return 0; |
| } |
| // Check that type of property and its ivar match. |
| if (Ivar->getCanonicalType() != property->getCanonicalType()) { |
| Diag(PropertyLoc, diag::error_property_ivar_type, property->getName(), |
| Ivar->getName()); |
| return 0; |
| } |
| |
| } else if (PropertyIvar) { |
| // @dynamic |
| Diag(PropertyLoc, diag::error_dynamic_property_ivar_decl); |
| return 0; |
| } |
| assert (property && "ActOnPropertyImplDecl - property declaration missing"); |
| ObjCPropertyImplDecl *PIDecl = |
| ObjCPropertyImplDecl::Create(Context, AtLoc, PropertyLoc, property, |
| (Synthesize ? |
| ObjCPropertyImplDecl::OBJC_PR_IMPL_SYNTHSIZE |
| : ObjCPropertyImplDecl::OBJC_PR_IMPL_DYNAMIC), |
| Ivar); |
| if (IC) |
| IC->addPropertyImplementation(PIDecl); |
| else |
| CatImplClass->addPropertyImplementation(PIDecl); |
| |
| return PIDecl; |
| } |
| |