Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 1 | //===--- SemaDeclObjC.cpp - Semantic Analysis for ObjC Declarations -------===// |
| 2 | // |
| 3 | // The LLVM Compiler Infrastructure |
| 4 | // |
Chris Lattner | 0bc735f | 2007-12-29 19:59:25 +0000 | [diff] [blame] | 5 | // This file is distributed under the University of Illinois Open Source |
| 6 | // License. See LICENSE.TXT for details. |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 7 | // |
| 8 | //===----------------------------------------------------------------------===// |
| 9 | // |
| 10 | // This file implements semantic analysis for Objective C declarations. |
| 11 | // |
| 12 | //===----------------------------------------------------------------------===// |
| 13 | |
| 14 | #include "Sema.h" |
Douglas Gregor | f06cdae | 2010-01-03 18:01:57 +0000 | [diff] [blame] | 15 | #include "Lookup.h" |
Douglas Gregor | f0aaf7a | 2009-04-24 21:10:55 +0000 | [diff] [blame] | 16 | #include "clang/Sema/ExternalSemaSource.h" |
Steve Naroff | ca33129 | 2009-03-03 14:49:36 +0000 | [diff] [blame] | 17 | #include "clang/AST/Expr.h" |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 18 | #include "clang/AST/ASTContext.h" |
| 19 | #include "clang/AST/DeclObjC.h" |
Daniel Dunbar | 12bc692 | 2008-08-11 03:27:53 +0000 | [diff] [blame] | 20 | #include "clang/Parse/DeclSpec.h" |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 21 | using namespace clang; |
| 22 | |
Steve Naroff | ebf6443 | 2009-02-28 16:59:13 +0000 | [diff] [blame] | 23 | /// ActOnStartOfObjCMethodDef - This routine sets up parameters; invisible |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 24 | /// and user declared, in the method definition's AST. |
Chris Lattner | b28317a | 2009-03-28 19:18:32 +0000 | [diff] [blame] | 25 | void Sema::ActOnStartOfObjCMethodDef(Scope *FnBodyScope, DeclPtrTy D) { |
Argyrios Kyrtzidis | 53d0ea5 | 2008-06-28 06:07:14 +0000 | [diff] [blame] | 26 | assert(getCurMethodDecl() == 0 && "Method parsing confused"); |
Chris Lattner | b28317a | 2009-03-28 19:18:32 +0000 | [diff] [blame] | 27 | ObjCMethodDecl *MDecl = dyn_cast_or_null<ObjCMethodDecl>(D.getAs<Decl>()); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 28 | |
Steve Naroff | 394f3f4 | 2008-07-25 17:57:26 +0000 | [diff] [blame] | 29 | // If we don't have a valid method decl, simply return. |
| 30 | if (!MDecl) |
| 31 | return; |
Steve Naroff | a56f616 | 2007-12-18 01:30:32 +0000 | [diff] [blame] | 32 | |
| 33 | // Allow the rest of sema to find private method decl implementations. |
Douglas Gregor | f8d49f6 | 2009-01-09 17:18:27 +0000 | [diff] [blame] | 34 | if (MDecl->isInstanceMethod()) |
Steve Naroff | a56f616 | 2007-12-18 01:30:32 +0000 | [diff] [blame] | 35 | AddInstanceMethodToGlobalPool(MDecl); |
| 36 | else |
| 37 | AddFactoryMethodToGlobalPool(MDecl); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 38 | |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 39 | // Allow all of Sema to see that we are entering a method definition. |
Douglas Gregor | 44b4321 | 2008-12-11 16:49:14 +0000 | [diff] [blame] | 40 | PushDeclContext(FnBodyScope, MDecl); |
Douglas Gregor | 9ea9bdb | 2010-03-01 23:15:13 +0000 | [diff] [blame] | 41 | PushFunctionScope(); |
| 42 | |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 43 | // Create Decl objects for each parameter, entrring them in the scope for |
| 44 | // binding to their use. |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 45 | |
| 46 | // Insert the invisible arguments, self and _cmd! |
Fariborz Jahanian | fef30b5 | 2008-12-09 20:23:04 +0000 | [diff] [blame] | 47 | MDecl->createImplicitParams(Context, MDecl->getClassInterface()); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 48 | |
Daniel Dunbar | 451318c | 2008-08-26 06:07:48 +0000 | [diff] [blame] | 49 | PushOnScopeChains(MDecl->getSelfDecl(), FnBodyScope); |
| 50 | PushOnScopeChains(MDecl->getCmdDecl(), FnBodyScope); |
Chris Lattner | 0442108 | 2008-04-08 04:40:51 +0000 | [diff] [blame] | 51 | |
Chris Lattner | 8123a95 | 2008-04-10 02:22:51 +0000 | [diff] [blame] | 52 | // Introduce all of the other parameters into this scope. |
Chris Lattner | 89951a8 | 2009-02-20 18:43:26 +0000 | [diff] [blame] | 53 | for (ObjCMethodDecl::param_iterator PI = MDecl->param_begin(), |
| 54 | E = MDecl->param_end(); PI != E; ++PI) |
| 55 | if ((*PI)->getIdentifier()) |
| 56 | PushOnScopeChains(*PI, FnBodyScope); |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 57 | } |
| 58 | |
Chris Lattner | b28317a | 2009-03-28 19:18:32 +0000 | [diff] [blame] | 59 | Sema::DeclPtrTy Sema:: |
Chris Lattner | 7caeabd | 2008-07-21 22:17:28 +0000 | [diff] [blame] | 60 | ActOnStartClassInterface(SourceLocation AtInterfaceLoc, |
| 61 | IdentifierInfo *ClassName, SourceLocation ClassLoc, |
| 62 | IdentifierInfo *SuperName, SourceLocation SuperLoc, |
Chris Lattner | b28317a | 2009-03-28 19:18:32 +0000 | [diff] [blame] | 63 | const DeclPtrTy *ProtoRefs, unsigned NumProtoRefs, |
Douglas Gregor | 18df52b | 2010-01-16 15:02:53 +0000 | [diff] [blame] | 64 | const SourceLocation *ProtoLocs, |
Chris Lattner | 7caeabd | 2008-07-21 22:17:28 +0000 | [diff] [blame] | 65 | SourceLocation EndProtoLoc, AttributeList *AttrList) { |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 66 | assert(ClassName && "Missing class identifier"); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 67 | |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 68 | // Check for another declaration kind with the same name. |
Douglas Gregor | c83c687 | 2010-04-15 22:33:43 +0000 | [diff] [blame] | 69 | NamedDecl *PrevDecl = LookupSingleName(TUScope, ClassName, ClassLoc, |
Douglas Gregor | c0b3964 | 2010-04-15 23:40:53 +0000 | [diff] [blame] | 70 | LookupOrdinaryName, ForRedeclaration); |
Douglas Gregor | 72c3f31 | 2008-12-05 18:15:24 +0000 | [diff] [blame] | 71 | |
Ted Kremenek | a526c5c | 2008-01-07 19:49:32 +0000 | [diff] [blame] | 72 | if (PrevDecl && !isa<ObjCInterfaceDecl>(PrevDecl)) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 73 | Diag(ClassLoc, diag::err_redefinition_different_kind) << ClassName; |
Chris Lattner | 5f4a682 | 2008-11-23 23:12:31 +0000 | [diff] [blame] | 74 | Diag(PrevDecl->getLocation(), diag::note_previous_definition); |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 75 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 76 | |
Ted Kremenek | a526c5c | 2008-01-07 19:49:32 +0000 | [diff] [blame] | 77 | ObjCInterfaceDecl* IDecl = dyn_cast_or_null<ObjCInterfaceDecl>(PrevDecl); |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 78 | if (IDecl) { |
| 79 | // Class already seen. Is it a forward declaration? |
Steve Naroff | cfe8bf3 | 2008-11-18 19:15:30 +0000 | [diff] [blame] | 80 | if (!IDecl->isForwardDecl()) { |
Chris Lattner | 1829a6d | 2009-02-23 22:00:08 +0000 | [diff] [blame] | 81 | IDecl->setInvalidDecl(); |
Chris Lattner | d9d22dd | 2008-11-24 05:29:24 +0000 | [diff] [blame] | 82 | Diag(AtInterfaceLoc, diag::err_duplicate_class_def)<<IDecl->getDeclName(); |
Chris Lattner | b8b96af | 2008-11-23 22:46:27 +0000 | [diff] [blame] | 83 | Diag(IDecl->getLocation(), diag::note_previous_definition); |
| 84 | |
Steve Naroff | cfe8bf3 | 2008-11-18 19:15:30 +0000 | [diff] [blame] | 85 | // Return the previous class interface. |
| 86 | // FIXME: don't leak the objects passed in! |
Chris Lattner | b28317a | 2009-03-28 19:18:32 +0000 | [diff] [blame] | 87 | return DeclPtrTy::make(IDecl); |
Steve Naroff | cfe8bf3 | 2008-11-18 19:15:30 +0000 | [diff] [blame] | 88 | } else { |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 89 | IDecl->setLocation(AtInterfaceLoc); |
| 90 | IDecl->setForwardDecl(false); |
Steve Naroff | 8b26cbd | 2009-09-11 00:12:01 +0000 | [diff] [blame] | 91 | IDecl->setClassLoc(ClassLoc); |
Ted Kremenek | c32b1d8 | 2009-11-17 22:58:30 +0000 | [diff] [blame] | 92 | |
| 93 | // Since this ObjCInterfaceDecl was created by a forward declaration, |
| 94 | // we now add it to the DeclContext since it wasn't added before |
| 95 | // (see ActOnForwardClassDeclaration). |
Douglas Gregor | 78713d8 | 2010-04-09 21:30:38 +0000 | [diff] [blame] | 96 | IDecl->setLexicalDeclContext(CurContext); |
Ted Kremenek | c32b1d8 | 2009-11-17 22:58:30 +0000 | [diff] [blame] | 97 | CurContext->addDecl(IDecl); |
| 98 | |
Fariborz Jahanian | 5f8f857 | 2009-11-17 19:08:08 +0000 | [diff] [blame] | 99 | if (AttrList) |
| 100 | ProcessDeclAttributeList(TUScope, IDecl, AttrList); |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 101 | } |
Chris Lattner | b752f28 | 2008-07-21 07:06:49 +0000 | [diff] [blame] | 102 | } else { |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 103 | IDecl = ObjCInterfaceDecl::Create(Context, CurContext, AtInterfaceLoc, |
Steve Naroff | d6a07aa | 2008-04-11 19:35:35 +0000 | [diff] [blame] | 104 | ClassName, ClassLoc); |
Daniel Dunbar | f641492 | 2008-08-20 18:02:42 +0000 | [diff] [blame] | 105 | if (AttrList) |
Douglas Gregor | 9cdda0c | 2009-06-17 21:51:59 +0000 | [diff] [blame] | 106 | ProcessDeclAttributeList(TUScope, IDecl, AttrList); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 107 | |
Steve Naroff | a7503a7 | 2009-04-23 15:15:40 +0000 | [diff] [blame] | 108 | PushOnScopeChains(IDecl, TUScope); |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 109 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 110 | |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 111 | if (SuperName) { |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 112 | // Check if a different kind of symbol declared in this scope. |
Douglas Gregor | c83c687 | 2010-04-15 22:33:43 +0000 | [diff] [blame] | 113 | PrevDecl = LookupSingleName(TUScope, SuperName, SuperLoc, |
| 114 | LookupOrdinaryName); |
Douglas Gregor | f06cdae | 2010-01-03 18:01:57 +0000 | [diff] [blame] | 115 | |
| 116 | if (!PrevDecl) { |
| 117 | // Try to correct for a typo in the superclass name. |
| 118 | LookupResult R(*this, SuperName, SuperLoc, LookupOrdinaryName); |
Douglas Gregor | aaf8716 | 2010-04-14 20:04:41 +0000 | [diff] [blame] | 119 | if (CorrectTypo(R, TUScope, 0, 0, false, CTC_NoKeywords) && |
Douglas Gregor | f06cdae | 2010-01-03 18:01:57 +0000 | [diff] [blame] | 120 | (PrevDecl = R.getAsSingle<ObjCInterfaceDecl>())) { |
| 121 | Diag(SuperLoc, diag::err_undef_superclass_suggest) |
| 122 | << SuperName << ClassName << PrevDecl->getDeclName(); |
Douglas Gregor | 67dd1d4 | 2010-01-07 00:17:44 +0000 | [diff] [blame] | 123 | Diag(PrevDecl->getLocation(), diag::note_previous_decl) |
| 124 | << PrevDecl->getDeclName(); |
Douglas Gregor | f06cdae | 2010-01-03 18:01:57 +0000 | [diff] [blame] | 125 | } |
| 126 | } |
| 127 | |
Fariborz Jahanian | fdee089 | 2009-07-09 22:08:26 +0000 | [diff] [blame] | 128 | if (PrevDecl == IDecl) { |
| 129 | Diag(SuperLoc, diag::err_recursive_superclass) |
| 130 | << SuperName << ClassName << SourceRange(AtInterfaceLoc, ClassLoc); |
| 131 | IDecl->setLocEnd(ClassLoc); |
Mike Stump | ac5fc7c | 2009-08-04 21:02:39 +0000 | [diff] [blame] | 132 | } else { |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 133 | ObjCInterfaceDecl *SuperClassDecl = |
Fariborz Jahanian | fdee089 | 2009-07-09 22:08:26 +0000 | [diff] [blame] | 134 | dyn_cast_or_null<ObjCInterfaceDecl>(PrevDecl); |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 135 | |
Fariborz Jahanian | fdee089 | 2009-07-09 22:08:26 +0000 | [diff] [blame] | 136 | // Diagnose classes that inherit from deprecated classes. |
| 137 | if (SuperClassDecl) |
| 138 | (void)DiagnoseUseOfDecl(SuperClassDecl, SuperLoc); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 139 | |
Fariborz Jahanian | fdee089 | 2009-07-09 22:08:26 +0000 | [diff] [blame] | 140 | if (PrevDecl && SuperClassDecl == 0) { |
| 141 | // The previous declaration was not a class decl. Check if we have a |
| 142 | // typedef. If we do, get the underlying class type. |
| 143 | if (const TypedefDecl *TDecl = dyn_cast_or_null<TypedefDecl>(PrevDecl)) { |
| 144 | QualType T = TDecl->getUnderlyingType(); |
| 145 | if (T->isObjCInterfaceType()) { |
John McCall | 183700f | 2009-09-21 23:43:11 +0000 | [diff] [blame] | 146 | if (NamedDecl *IDecl = T->getAs<ObjCInterfaceType>()->getDecl()) |
Fariborz Jahanian | fdee089 | 2009-07-09 22:08:26 +0000 | [diff] [blame] | 147 | SuperClassDecl = dyn_cast<ObjCInterfaceDecl>(IDecl); |
| 148 | } |
| 149 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 150 | |
Fariborz Jahanian | fdee089 | 2009-07-09 22:08:26 +0000 | [diff] [blame] | 151 | // This handles the following case: |
| 152 | // |
| 153 | // typedef int SuperClass; |
| 154 | // @interface MyClass : SuperClass {} @end |
| 155 | // |
| 156 | if (!SuperClassDecl) { |
| 157 | Diag(SuperLoc, diag::err_redefinition_different_kind) << SuperName; |
| 158 | Diag(PrevDecl->getLocation(), diag::note_previous_definition); |
Steve Naroff | 818cb9e | 2009-02-04 17:14:05 +0000 | [diff] [blame] | 159 | } |
| 160 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 161 | |
Fariborz Jahanian | fdee089 | 2009-07-09 22:08:26 +0000 | [diff] [blame] | 162 | if (!dyn_cast_or_null<TypedefDecl>(PrevDecl)) { |
| 163 | if (!SuperClassDecl) |
| 164 | Diag(SuperLoc, diag::err_undef_superclass) |
| 165 | << SuperName << ClassName << SourceRange(AtInterfaceLoc, ClassLoc); |
| 166 | else if (SuperClassDecl->isForwardDecl()) |
| 167 | Diag(SuperLoc, diag::err_undef_superclass) |
| 168 | << SuperClassDecl->getDeclName() << ClassName |
| 169 | << SourceRange(AtInterfaceLoc, ClassLoc); |
Steve Naroff | 818cb9e | 2009-02-04 17:14:05 +0000 | [diff] [blame] | 170 | } |
Fariborz Jahanian | fdee089 | 2009-07-09 22:08:26 +0000 | [diff] [blame] | 171 | IDecl->setSuperClass(SuperClassDecl); |
| 172 | IDecl->setSuperClassLoc(SuperLoc); |
| 173 | IDecl->setLocEnd(SuperLoc); |
Steve Naroff | 818cb9e | 2009-02-04 17:14:05 +0000 | [diff] [blame] | 174 | } |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 175 | } else { // we have a root class. |
| 176 | IDecl->setLocEnd(ClassLoc); |
| 177 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 178 | |
Steve Naroff | cfe8bf3 | 2008-11-18 19:15:30 +0000 | [diff] [blame] | 179 | /// Check then save referenced protocols. |
Chris Lattner | 06036d3 | 2008-07-26 04:13:19 +0000 | [diff] [blame] | 180 | if (NumProtoRefs) { |
Chris Lattner | 38af2de | 2009-02-20 21:35:13 +0000 | [diff] [blame] | 181 | IDecl->setProtocolList((ObjCProtocolDecl**)ProtoRefs, NumProtoRefs, |
Douglas Gregor | 18df52b | 2010-01-16 15:02:53 +0000 | [diff] [blame] | 182 | ProtoLocs, Context); |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 183 | IDecl->setLocEnd(EndProtoLoc); |
| 184 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 185 | |
Anders Carlsson | 1528145 | 2008-11-04 16:57:32 +0000 | [diff] [blame] | 186 | CheckObjCDeclScope(IDecl); |
Chris Lattner | b28317a | 2009-03-28 19:18:32 +0000 | [diff] [blame] | 187 | return DeclPtrTy::make(IDecl); |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 188 | } |
| 189 | |
| 190 | /// ActOnCompatiblityAlias - this action is called after complete parsing of |
Daniel Dunbar | 7ad1b1f | 2008-09-04 20:01:15 +0000 | [diff] [blame] | 191 | /// @compatibility_alias declaration. It sets up the alias relationships. |
Chris Lattner | b28317a | 2009-03-28 19:18:32 +0000 | [diff] [blame] | 192 | Sema::DeclPtrTy Sema::ActOnCompatiblityAlias(SourceLocation AtLoc, |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 193 | IdentifierInfo *AliasName, |
Chris Lattner | b28317a | 2009-03-28 19:18:32 +0000 | [diff] [blame] | 194 | SourceLocation AliasLocation, |
| 195 | IdentifierInfo *ClassName, |
| 196 | SourceLocation ClassLocation) { |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 197 | // Look for previous declaration of alias name |
Douglas Gregor | c83c687 | 2010-04-15 22:33:43 +0000 | [diff] [blame] | 198 | NamedDecl *ADecl = LookupSingleName(TUScope, AliasName, AliasLocation, |
Douglas Gregor | c0b3964 | 2010-04-15 23:40:53 +0000 | [diff] [blame] | 199 | LookupOrdinaryName, ForRedeclaration); |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 200 | if (ADecl) { |
Chris Lattner | 8b265bd | 2008-11-23 23:20:13 +0000 | [diff] [blame] | 201 | if (isa<ObjCCompatibleAliasDecl>(ADecl)) |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 202 | Diag(AliasLocation, diag::warn_previous_alias_decl); |
Chris Lattner | 8b265bd | 2008-11-23 23:20:13 +0000 | [diff] [blame] | 203 | else |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 204 | Diag(AliasLocation, diag::err_conflicting_aliasing_type) << AliasName; |
Chris Lattner | 8b265bd | 2008-11-23 23:20:13 +0000 | [diff] [blame] | 205 | Diag(ADecl->getLocation(), diag::note_previous_declaration); |
Chris Lattner | b28317a | 2009-03-28 19:18:32 +0000 | [diff] [blame] | 206 | return DeclPtrTy(); |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 207 | } |
| 208 | // Check for class declaration |
Douglas Gregor | c83c687 | 2010-04-15 22:33:43 +0000 | [diff] [blame] | 209 | NamedDecl *CDeclU = LookupSingleName(TUScope, ClassName, ClassLocation, |
Douglas Gregor | c0b3964 | 2010-04-15 23:40:53 +0000 | [diff] [blame] | 210 | LookupOrdinaryName, ForRedeclaration); |
Fariborz Jahanian | 305c658 | 2009-01-08 01:10:55 +0000 | [diff] [blame] | 211 | if (const TypedefDecl *TDecl = dyn_cast_or_null<TypedefDecl>(CDeclU)) { |
| 212 | QualType T = TDecl->getUnderlyingType(); |
| 213 | if (T->isObjCInterfaceType()) { |
John McCall | 183700f | 2009-09-21 23:43:11 +0000 | [diff] [blame] | 214 | if (NamedDecl *IDecl = T->getAs<ObjCInterfaceType>()->getDecl()) { |
Fariborz Jahanian | 305c658 | 2009-01-08 01:10:55 +0000 | [diff] [blame] | 215 | ClassName = IDecl->getIdentifier(); |
Douglas Gregor | c83c687 | 2010-04-15 22:33:43 +0000 | [diff] [blame] | 216 | CDeclU = LookupSingleName(TUScope, ClassName, ClassLocation, |
Douglas Gregor | c0b3964 | 2010-04-15 23:40:53 +0000 | [diff] [blame] | 217 | LookupOrdinaryName, ForRedeclaration); |
Fariborz Jahanian | 305c658 | 2009-01-08 01:10:55 +0000 | [diff] [blame] | 218 | } |
| 219 | } |
| 220 | } |
Chris Lattner | f8d17a5 | 2008-03-16 21:17:37 +0000 | [diff] [blame] | 221 | ObjCInterfaceDecl *CDecl = dyn_cast_or_null<ObjCInterfaceDecl>(CDeclU); |
| 222 | if (CDecl == 0) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 223 | Diag(ClassLocation, diag::warn_undef_interface) << ClassName; |
Chris Lattner | f8d17a5 | 2008-03-16 21:17:37 +0000 | [diff] [blame] | 224 | if (CDeclU) |
Chris Lattner | 8b265bd | 2008-11-23 23:20:13 +0000 | [diff] [blame] | 225 | Diag(CDeclU->getLocation(), diag::note_previous_declaration); |
Chris Lattner | b28317a | 2009-03-28 19:18:32 +0000 | [diff] [blame] | 226 | return DeclPtrTy(); |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 227 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 228 | |
Chris Lattner | f8d17a5 | 2008-03-16 21:17:37 +0000 | [diff] [blame] | 229 | // Everything checked out, instantiate a new alias declaration AST. |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 230 | ObjCCompatibleAliasDecl *AliasDecl = |
Douglas Gregor | d043410 | 2009-01-09 00:49:46 +0000 | [diff] [blame] | 231 | ObjCCompatibleAliasDecl::Create(Context, CurContext, AtLoc, AliasName, CDecl); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 232 | |
Anders Carlsson | 1528145 | 2008-11-04 16:57:32 +0000 | [diff] [blame] | 233 | if (!CheckObjCDeclScope(AliasDecl)) |
Douglas Gregor | 516ff43 | 2009-04-24 02:57:34 +0000 | [diff] [blame] | 234 | PushOnScopeChains(AliasDecl, TUScope); |
Douglas Gregor | d043410 | 2009-01-09 00:49:46 +0000 | [diff] [blame] | 235 | |
Chris Lattner | b28317a | 2009-03-28 19:18:32 +0000 | [diff] [blame] | 236 | return DeclPtrTy::make(AliasDecl); |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 237 | } |
| 238 | |
Steve Naroff | 61d6852 | 2009-03-05 15:22:01 +0000 | [diff] [blame] | 239 | void Sema::CheckForwardProtocolDeclarationForCircularDependency( |
| 240 | IdentifierInfo *PName, |
| 241 | SourceLocation &Ploc, SourceLocation PrevLoc, |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 242 | const ObjCList<ObjCProtocolDecl> &PList) { |
Steve Naroff | 61d6852 | 2009-03-05 15:22:01 +0000 | [diff] [blame] | 243 | for (ObjCList<ObjCProtocolDecl>::iterator I = PList.begin(), |
| 244 | E = PList.end(); I != E; ++I) { |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 245 | |
Douglas Gregor | c83c687 | 2010-04-15 22:33:43 +0000 | [diff] [blame] | 246 | if (ObjCProtocolDecl *PDecl = LookupProtocol((*I)->getIdentifier(), |
| 247 | Ploc)) { |
Steve Naroff | 61d6852 | 2009-03-05 15:22:01 +0000 | [diff] [blame] | 248 | if (PDecl->getIdentifier() == PName) { |
| 249 | Diag(Ploc, diag::err_protocol_has_circular_dependency); |
| 250 | Diag(PrevLoc, diag::note_previous_definition); |
| 251 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 252 | CheckForwardProtocolDeclarationForCircularDependency(PName, Ploc, |
Steve Naroff | 61d6852 | 2009-03-05 15:22:01 +0000 | [diff] [blame] | 253 | PDecl->getLocation(), PDecl->getReferencedProtocols()); |
| 254 | } |
| 255 | } |
| 256 | } |
| 257 | |
Chris Lattner | b28317a | 2009-03-28 19:18:32 +0000 | [diff] [blame] | 258 | Sema::DeclPtrTy |
Chris Lattner | e13b959 | 2008-07-26 04:03:38 +0000 | [diff] [blame] | 259 | Sema::ActOnStartProtocolInterface(SourceLocation AtProtoInterfaceLoc, |
| 260 | IdentifierInfo *ProtocolName, |
| 261 | SourceLocation ProtocolLoc, |
Chris Lattner | b28317a | 2009-03-28 19:18:32 +0000 | [diff] [blame] | 262 | const DeclPtrTy *ProtoRefs, |
Chris Lattner | e13b959 | 2008-07-26 04:03:38 +0000 | [diff] [blame] | 263 | unsigned NumProtoRefs, |
Douglas Gregor | 18df52b | 2010-01-16 15:02:53 +0000 | [diff] [blame] | 264 | const SourceLocation *ProtoLocs, |
Daniel Dunbar | 246e70f | 2008-09-26 04:48:09 +0000 | [diff] [blame] | 265 | SourceLocation EndProtoLoc, |
| 266 | AttributeList *AttrList) { |
| 267 | // FIXME: Deal with AttrList. |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 268 | assert(ProtocolName && "Missing protocol identifier"); |
Douglas Gregor | c83c687 | 2010-04-15 22:33:43 +0000 | [diff] [blame] | 269 | ObjCProtocolDecl *PDecl = LookupProtocol(ProtocolName, ProtocolLoc); |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 270 | if (PDecl) { |
| 271 | // Protocol already seen. Better be a forward protocol declaration |
Chris Lattner | 439e71f | 2008-03-16 01:25:17 +0000 | [diff] [blame] | 272 | if (!PDecl->isForwardDecl()) { |
Fariborz Jahanian | e2573e5 | 2009-04-06 23:43:32 +0000 | [diff] [blame] | 273 | Diag(ProtocolLoc, diag::warn_duplicate_protocol_def) << ProtocolName; |
Chris Lattner | b8b96af | 2008-11-23 22:46:27 +0000 | [diff] [blame] | 274 | Diag(PDecl->getLocation(), diag::note_previous_definition); |
Chris Lattner | 439e71f | 2008-03-16 01:25:17 +0000 | [diff] [blame] | 275 | // Just return the protocol we already had. |
| 276 | // FIXME: don't leak the objects passed in! |
Chris Lattner | b28317a | 2009-03-28 19:18:32 +0000 | [diff] [blame] | 277 | return DeclPtrTy::make(PDecl); |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 278 | } |
Steve Naroff | 61d6852 | 2009-03-05 15:22:01 +0000 | [diff] [blame] | 279 | ObjCList<ObjCProtocolDecl> PList; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 280 | PList.set((ObjCProtocolDecl *const*)ProtoRefs, NumProtoRefs, Context); |
Steve Naroff | 61d6852 | 2009-03-05 15:22:01 +0000 | [diff] [blame] | 281 | CheckForwardProtocolDeclarationForCircularDependency( |
| 282 | ProtocolName, ProtocolLoc, PDecl->getLocation(), PList); |
| 283 | PList.Destroy(Context); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 284 | |
Steve Naroff | f11b508 | 2008-08-13 16:39:22 +0000 | [diff] [blame] | 285 | // Make sure the cached decl gets a valid start location. |
| 286 | PDecl->setLocation(AtProtoInterfaceLoc); |
Chris Lattner | 439e71f | 2008-03-16 01:25:17 +0000 | [diff] [blame] | 287 | PDecl->setForwardDecl(false); |
Chris Lattner | 439e71f | 2008-03-16 01:25:17 +0000 | [diff] [blame] | 288 | } else { |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 289 | PDecl = ObjCProtocolDecl::Create(Context, CurContext, |
Douglas Gregor | d043410 | 2009-01-09 00:49:46 +0000 | [diff] [blame] | 290 | AtProtoInterfaceLoc,ProtocolName); |
Douglas Gregor | 6e378de | 2009-04-23 23:18:26 +0000 | [diff] [blame] | 291 | PushOnScopeChains(PDecl, TUScope); |
Chris Lattner | c858105 | 2008-03-16 20:19:15 +0000 | [diff] [blame] | 292 | PDecl->setForwardDecl(false); |
Chris Lattner | cca59d7 | 2008-03-16 01:23:04 +0000 | [diff] [blame] | 293 | } |
Fariborz Jahanian | bc1c877 | 2008-12-17 01:07:27 +0000 | [diff] [blame] | 294 | if (AttrList) |
Douglas Gregor | 9cdda0c | 2009-06-17 21:51:59 +0000 | [diff] [blame] | 295 | ProcessDeclAttributeList(TUScope, PDecl, AttrList); |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 296 | if (NumProtoRefs) { |
Chris Lattner | c858105 | 2008-03-16 20:19:15 +0000 | [diff] [blame] | 297 | /// Check then save referenced protocols. |
Douglas Gregor | 18df52b | 2010-01-16 15:02:53 +0000 | [diff] [blame] | 298 | PDecl->setProtocolList((ObjCProtocolDecl**)ProtoRefs, NumProtoRefs, |
| 299 | ProtoLocs, Context); |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 300 | PDecl->setLocEnd(EndProtoLoc); |
| 301 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 302 | |
| 303 | CheckObjCDeclScope(PDecl); |
Chris Lattner | b28317a | 2009-03-28 19:18:32 +0000 | [diff] [blame] | 304 | return DeclPtrTy::make(PDecl); |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 305 | } |
| 306 | |
| 307 | /// FindProtocolDeclaration - This routine looks up protocols and |
Daniel Dunbar | 7ad1b1f | 2008-09-04 20:01:15 +0000 | [diff] [blame] | 308 | /// issues an error if they are not declared. It returns list of |
| 309 | /// protocol declarations in its 'Protocols' argument. |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 310 | void |
Chris Lattner | e13b959 | 2008-07-26 04:03:38 +0000 | [diff] [blame] | 311 | Sema::FindProtocolDeclaration(bool WarnOnDeclarations, |
Chris Lattner | 7caeabd | 2008-07-21 22:17:28 +0000 | [diff] [blame] | 312 | const IdentifierLocPair *ProtocolId, |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 313 | unsigned NumProtocols, |
Chris Lattner | b28317a | 2009-03-28 19:18:32 +0000 | [diff] [blame] | 314 | llvm::SmallVectorImpl<DeclPtrTy> &Protocols) { |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 315 | for (unsigned i = 0; i != NumProtocols; ++i) { |
Douglas Gregor | c83c687 | 2010-04-15 22:33:43 +0000 | [diff] [blame] | 316 | ObjCProtocolDecl *PDecl = LookupProtocol(ProtocolId[i].first, |
| 317 | ProtocolId[i].second); |
Chris Lattner | eacc392 | 2008-07-26 03:47:43 +0000 | [diff] [blame] | 318 | if (!PDecl) { |
Douglas Gregor | f06cdae | 2010-01-03 18:01:57 +0000 | [diff] [blame] | 319 | LookupResult R(*this, ProtocolId[i].first, ProtocolId[i].second, |
| 320 | LookupObjCProtocolName); |
Douglas Gregor | aaf8716 | 2010-04-14 20:04:41 +0000 | [diff] [blame] | 321 | if (CorrectTypo(R, TUScope, 0, 0, false, CTC_NoKeywords) && |
Douglas Gregor | f06cdae | 2010-01-03 18:01:57 +0000 | [diff] [blame] | 322 | (PDecl = R.getAsSingle<ObjCProtocolDecl>())) { |
| 323 | Diag(ProtocolId[i].second, diag::err_undeclared_protocol_suggest) |
| 324 | << ProtocolId[i].first << R.getLookupName(); |
Douglas Gregor | 67dd1d4 | 2010-01-07 00:17:44 +0000 | [diff] [blame] | 325 | Diag(PDecl->getLocation(), diag::note_previous_decl) |
| 326 | << PDecl->getDeclName(); |
Douglas Gregor | f06cdae | 2010-01-03 18:01:57 +0000 | [diff] [blame] | 327 | } |
| 328 | } |
| 329 | |
| 330 | if (!PDecl) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 331 | Diag(ProtocolId[i].second, diag::err_undeclared_protocol) |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 332 | << ProtocolId[i].first; |
Chris Lattner | eacc392 | 2008-07-26 03:47:43 +0000 | [diff] [blame] | 333 | continue; |
| 334 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 335 | |
Douglas Gregor | 48f3bb9 | 2009-02-18 21:56:37 +0000 | [diff] [blame] | 336 | (void)DiagnoseUseOfDecl(PDecl, ProtocolId[i].second); |
Chris Lattner | eacc392 | 2008-07-26 03:47:43 +0000 | [diff] [blame] | 337 | |
| 338 | // If this is a forward declaration and we are supposed to warn in this |
| 339 | // case, do it. |
| 340 | if (WarnOnDeclarations && PDecl->isForwardDecl()) |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 341 | Diag(ProtocolId[i].second, diag::warn_undef_protocolref) |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 342 | << ProtocolId[i].first; |
Chris Lattner | b28317a | 2009-03-28 19:18:32 +0000 | [diff] [blame] | 343 | Protocols.push_back(DeclPtrTy::make(PDecl)); |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 344 | } |
| 345 | } |
| 346 | |
Fariborz Jahanian | 78c39c7 | 2009-03-02 19:06:08 +0000 | [diff] [blame] | 347 | /// DiagnoseClassExtensionDupMethods - Check for duplicate declaration of |
Fariborz Jahanian | b7f95f5 | 2009-03-02 19:05:07 +0000 | [diff] [blame] | 348 | /// a class method in its extension. |
| 349 | /// |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 350 | void Sema::DiagnoseClassExtensionDupMethods(ObjCCategoryDecl *CAT, |
Fariborz Jahanian | b7f95f5 | 2009-03-02 19:05:07 +0000 | [diff] [blame] | 351 | ObjCInterfaceDecl *ID) { |
| 352 | if (!ID) |
| 353 | return; // Possibly due to previous error |
| 354 | |
| 355 | llvm::DenseMap<Selector, const ObjCMethodDecl*> MethodMap; |
Argyrios Kyrtzidis | 17945a0 | 2009-06-30 02:36:12 +0000 | [diff] [blame] | 356 | for (ObjCInterfaceDecl::method_iterator i = ID->meth_begin(), |
| 357 | e = ID->meth_end(); i != e; ++i) { |
Fariborz Jahanian | b7f95f5 | 2009-03-02 19:05:07 +0000 | [diff] [blame] | 358 | ObjCMethodDecl *MD = *i; |
| 359 | MethodMap[MD->getSelector()] = MD; |
| 360 | } |
| 361 | |
| 362 | if (MethodMap.empty()) |
| 363 | return; |
Argyrios Kyrtzidis | 17945a0 | 2009-06-30 02:36:12 +0000 | [diff] [blame] | 364 | for (ObjCCategoryDecl::method_iterator i = CAT->meth_begin(), |
| 365 | e = CAT->meth_end(); i != e; ++i) { |
Fariborz Jahanian | b7f95f5 | 2009-03-02 19:05:07 +0000 | [diff] [blame] | 366 | ObjCMethodDecl *Method = *i; |
| 367 | const ObjCMethodDecl *&PrevMethod = MethodMap[Method->getSelector()]; |
| 368 | if (PrevMethod && !MatchTwoMethodDeclarations(Method, PrevMethod)) { |
| 369 | Diag(Method->getLocation(), diag::err_duplicate_method_decl) |
| 370 | << Method->getDeclName(); |
| 371 | Diag(PrevMethod->getLocation(), diag::note_previous_declaration); |
| 372 | } |
| 373 | } |
| 374 | } |
| 375 | |
Chris Lattner | 58fe03b | 2009-04-12 08:43:13 +0000 | [diff] [blame] | 376 | /// ActOnForwardProtocolDeclaration - Handle @protocol foo; |
Chris Lattner | b28317a | 2009-03-28 19:18:32 +0000 | [diff] [blame] | 377 | Action::DeclPtrTy |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 378 | Sema::ActOnForwardProtocolDeclaration(SourceLocation AtProtocolLoc, |
Chris Lattner | 7caeabd | 2008-07-21 22:17:28 +0000 | [diff] [blame] | 379 | const IdentifierLocPair *IdentList, |
Fariborz Jahanian | bc1c877 | 2008-12-17 01:07:27 +0000 | [diff] [blame] | 380 | unsigned NumElts, |
| 381 | AttributeList *attrList) { |
Ted Kremenek | a526c5c | 2008-01-07 19:49:32 +0000 | [diff] [blame] | 382 | llvm::SmallVector<ObjCProtocolDecl*, 32> Protocols; |
Douglas Gregor | 18df52b | 2010-01-16 15:02:53 +0000 | [diff] [blame] | 383 | llvm::SmallVector<SourceLocation, 8> ProtoLocs; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 384 | |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 385 | for (unsigned i = 0; i != NumElts; ++i) { |
Chris Lattner | 7caeabd | 2008-07-21 22:17:28 +0000 | [diff] [blame] | 386 | IdentifierInfo *Ident = IdentList[i].first; |
Douglas Gregor | c83c687 | 2010-04-15 22:33:43 +0000 | [diff] [blame] | 387 | ObjCProtocolDecl *PDecl = LookupProtocol(Ident, IdentList[i].second); |
Douglas Gregor | d043410 | 2009-01-09 00:49:46 +0000 | [diff] [blame] | 388 | if (PDecl == 0) { // Not already seen? |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 389 | PDecl = ObjCProtocolDecl::Create(Context, CurContext, |
Douglas Gregor | d043410 | 2009-01-09 00:49:46 +0000 | [diff] [blame] | 390 | IdentList[i].second, Ident); |
Douglas Gregor | 6e378de | 2009-04-23 23:18:26 +0000 | [diff] [blame] | 391 | PushOnScopeChains(PDecl, TUScope); |
Douglas Gregor | d043410 | 2009-01-09 00:49:46 +0000 | [diff] [blame] | 392 | } |
Fariborz Jahanian | bc1c877 | 2008-12-17 01:07:27 +0000 | [diff] [blame] | 393 | if (attrList) |
Douglas Gregor | 9cdda0c | 2009-06-17 21:51:59 +0000 | [diff] [blame] | 394 | ProcessDeclAttributeList(TUScope, PDecl, attrList); |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 395 | Protocols.push_back(PDecl); |
Douglas Gregor | 18df52b | 2010-01-16 15:02:53 +0000 | [diff] [blame] | 396 | ProtoLocs.push_back(IdentList[i].second); |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 397 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 398 | |
| 399 | ObjCForwardProtocolDecl *PDecl = |
Douglas Gregor | d043410 | 2009-01-09 00:49:46 +0000 | [diff] [blame] | 400 | ObjCForwardProtocolDecl::Create(Context, CurContext, AtProtocolLoc, |
Douglas Gregor | 18df52b | 2010-01-16 15:02:53 +0000 | [diff] [blame] | 401 | Protocols.data(), Protocols.size(), |
| 402 | ProtoLocs.data()); |
Argyrios Kyrtzidis | 17945a0 | 2009-06-30 02:36:12 +0000 | [diff] [blame] | 403 | CurContext->addDecl(PDecl); |
Anders Carlsson | 1528145 | 2008-11-04 16:57:32 +0000 | [diff] [blame] | 404 | CheckObjCDeclScope(PDecl); |
Chris Lattner | b28317a | 2009-03-28 19:18:32 +0000 | [diff] [blame] | 405 | return DeclPtrTy::make(PDecl); |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 406 | } |
| 407 | |
Chris Lattner | b28317a | 2009-03-28 19:18:32 +0000 | [diff] [blame] | 408 | Sema::DeclPtrTy Sema:: |
Chris Lattner | 7caeabd | 2008-07-21 22:17:28 +0000 | [diff] [blame] | 409 | ActOnStartCategoryInterface(SourceLocation AtInterfaceLoc, |
| 410 | IdentifierInfo *ClassName, SourceLocation ClassLoc, |
| 411 | IdentifierInfo *CategoryName, |
| 412 | SourceLocation CategoryLoc, |
Chris Lattner | b28317a | 2009-03-28 19:18:32 +0000 | [diff] [blame] | 413 | const DeclPtrTy *ProtoRefs, |
Chris Lattner | 7caeabd | 2008-07-21 22:17:28 +0000 | [diff] [blame] | 414 | unsigned NumProtoRefs, |
Douglas Gregor | 18df52b | 2010-01-16 15:02:53 +0000 | [diff] [blame] | 415 | const SourceLocation *ProtoLocs, |
Chris Lattner | 7caeabd | 2008-07-21 22:17:28 +0000 | [diff] [blame] | 416 | SourceLocation EndProtoLoc) { |
Fariborz Jahanian | 2576061 | 2010-02-15 21:55:26 +0000 | [diff] [blame] | 417 | ObjCCategoryDecl *CDecl = 0; |
Douglas Gregor | c83c687 | 2010-04-15 22:33:43 +0000 | [diff] [blame] | 418 | ObjCInterfaceDecl *IDecl = getObjCInterfaceDecl(ClassName, ClassLoc, true); |
Ted Kremenek | 09b6897 | 2010-02-23 19:39:46 +0000 | [diff] [blame] | 419 | |
| 420 | /// Check that class of this category is already completely declared. |
| 421 | if (!IDecl || IDecl->isForwardDecl()) { |
| 422 | // Create an invalid ObjCCategoryDecl to serve as context for |
| 423 | // the enclosing method declarations. We mark the decl invalid |
| 424 | // to make it clear that this isn't a valid AST. |
| 425 | CDecl = ObjCCategoryDecl::Create(Context, CurContext, AtInterfaceLoc, |
| 426 | ClassLoc, CategoryLoc, CategoryName); |
| 427 | CDecl->setInvalidDecl(); |
| 428 | Diag(ClassLoc, diag::err_undef_interface) << ClassName; |
| 429 | return DeclPtrTy::make(CDecl); |
| 430 | } |
| 431 | |
| 432 | if (!CategoryName) { |
Fariborz Jahanian | 2576061 | 2010-02-15 21:55:26 +0000 | [diff] [blame] | 433 | // Class extensions require a special treatment. Use an existing one. |
Ted Kremenek | 09b6897 | 2010-02-23 19:39:46 +0000 | [diff] [blame] | 434 | // Note that 'getClassExtension()' can return NULL. |
Fariborz Jahanian | 0e5ad25 | 2010-02-23 01:26:30 +0000 | [diff] [blame] | 435 | CDecl = IDecl->getClassExtension(); |
Fariborz Jahanian | 24e1408 | 2010-04-02 20:53:05 +0000 | [diff] [blame] | 436 | if (IDecl->getImplementation()) { |
| 437 | Diag(ClassLoc, diag::err_class_extension_after_impl) << ClassName; |
| 438 | Diag(IDecl->getImplementation()->getLocation(), |
| 439 | diag::note_implementation_declared); |
| 440 | } |
Ted Kremenek | 09b6897 | 2010-02-23 19:39:46 +0000 | [diff] [blame] | 441 | } |
| 442 | |
Fariborz Jahanian | 2576061 | 2010-02-15 21:55:26 +0000 | [diff] [blame] | 443 | if (!CDecl) { |
Ted Kremenek | 09b6897 | 2010-02-23 19:39:46 +0000 | [diff] [blame] | 444 | CDecl = ObjCCategoryDecl::Create(Context, CurContext, AtInterfaceLoc, |
| 445 | ClassLoc, CategoryLoc, CategoryName); |
Fariborz Jahanian | 2576061 | 2010-02-15 21:55:26 +0000 | [diff] [blame] | 446 | // FIXME: PushOnScopeChains? |
| 447 | CurContext->addDecl(CDecl); |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 448 | |
Fariborz Jahanian | 2576061 | 2010-02-15 21:55:26 +0000 | [diff] [blame] | 449 | CDecl->setClassInterface(IDecl); |
| 450 | // Insert first use of class extension to the list of class's categories. |
| 451 | if (!CategoryName) |
| 452 | CDecl->insertNextClassCategory(); |
| 453 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 454 | |
Chris Lattner | 16b34b4 | 2009-02-16 21:30:01 +0000 | [diff] [blame] | 455 | // If the interface is deprecated, warn about it. |
Douglas Gregor | 48f3bb9 | 2009-02-18 21:56:37 +0000 | [diff] [blame] | 456 | (void)DiagnoseUseOfDecl(IDecl, ClassLoc); |
Chris Lattner | 70f1954 | 2009-02-16 21:26:43 +0000 | [diff] [blame] | 457 | |
Fariborz Jahanian | 2576061 | 2010-02-15 21:55:26 +0000 | [diff] [blame] | 458 | if (CategoryName) { |
| 459 | /// Check for duplicate interface declaration for this category |
| 460 | ObjCCategoryDecl *CDeclChain; |
| 461 | for (CDeclChain = IDecl->getCategoryList(); CDeclChain; |
| 462 | CDeclChain = CDeclChain->getNextClassCategory()) { |
| 463 | if (CDeclChain->getIdentifier() == CategoryName) { |
| 464 | // Class extensions can be declared multiple times. |
| 465 | Diag(CategoryLoc, diag::warn_dup_category_def) |
| 466 | << ClassName << CategoryName; |
| 467 | Diag(CDeclChain->getLocation(), diag::note_previous_definition); |
| 468 | break; |
| 469 | } |
Chris Lattner | 70f1954 | 2009-02-16 21:26:43 +0000 | [diff] [blame] | 470 | } |
Fariborz Jahanian | 2576061 | 2010-02-15 21:55:26 +0000 | [diff] [blame] | 471 | if (!CDeclChain) |
| 472 | CDecl->insertNextClassCategory(); |
Chris Lattner | 70f1954 | 2009-02-16 21:26:43 +0000 | [diff] [blame] | 473 | } |
Chris Lattner | 70f1954 | 2009-02-16 21:26:43 +0000 | [diff] [blame] | 474 | |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 475 | if (NumProtoRefs) { |
Fariborz Jahanian | b106fc6 | 2009-10-05 21:32:49 +0000 | [diff] [blame] | 476 | CDecl->setProtocolList((ObjCProtocolDecl**)ProtoRefs, NumProtoRefs, |
Douglas Gregor | 18df52b | 2010-01-16 15:02:53 +0000 | [diff] [blame] | 477 | ProtoLocs, Context); |
Fariborz Jahanian | 339798e | 2009-10-05 20:41:32 +0000 | [diff] [blame] | 478 | // Protocols in the class extension belong to the class. |
Fariborz Jahanian | 2576061 | 2010-02-15 21:55:26 +0000 | [diff] [blame] | 479 | if (CDecl->IsClassExtension()) |
Fariborz Jahanian | 339798e | 2009-10-05 20:41:32 +0000 | [diff] [blame] | 480 | IDecl->mergeClassExtensionProtocolList((ObjCProtocolDecl**)ProtoRefs, |
Douglas Gregor | 18df52b | 2010-01-16 15:02:53 +0000 | [diff] [blame] | 481 | NumProtoRefs, ProtoLocs, |
| 482 | Context); |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 483 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 484 | |
Anders Carlsson | 1528145 | 2008-11-04 16:57:32 +0000 | [diff] [blame] | 485 | CheckObjCDeclScope(CDecl); |
Chris Lattner | b28317a | 2009-03-28 19:18:32 +0000 | [diff] [blame] | 486 | return DeclPtrTy::make(CDecl); |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 487 | } |
| 488 | |
| 489 | /// ActOnStartCategoryImplementation - Perform semantic checks on the |
Ted Kremenek | a526c5c | 2008-01-07 19:49:32 +0000 | [diff] [blame] | 490 | /// category implementation declaration and build an ObjCCategoryImplDecl |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 491 | /// object. |
Chris Lattner | b28317a | 2009-03-28 19:18:32 +0000 | [diff] [blame] | 492 | Sema::DeclPtrTy Sema::ActOnStartCategoryImplementation( |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 493 | SourceLocation AtCatImplLoc, |
| 494 | IdentifierInfo *ClassName, SourceLocation ClassLoc, |
| 495 | IdentifierInfo *CatName, SourceLocation CatLoc) { |
Douglas Gregor | c83c687 | 2010-04-15 22:33:43 +0000 | [diff] [blame] | 496 | ObjCInterfaceDecl *IDecl = getObjCInterfaceDecl(ClassName, ClassLoc, true); |
Argyrios Kyrtzidis | 8a1d722 | 2009-07-21 00:05:53 +0000 | [diff] [blame] | 497 | ObjCCategoryDecl *CatIDecl = 0; |
| 498 | if (IDecl) { |
| 499 | CatIDecl = IDecl->FindCategoryDeclaration(CatName); |
| 500 | if (!CatIDecl) { |
| 501 | // Category @implementation with no corresponding @interface. |
| 502 | // Create and install one. |
| 503 | CatIDecl = ObjCCategoryDecl::Create(Context, CurContext, SourceLocation(), |
Douglas Gregor | 3db211b | 2010-01-16 16:38:58 +0000 | [diff] [blame] | 504 | SourceLocation(), SourceLocation(), |
Argyrios Kyrtzidis | 8a1d722 | 2009-07-21 00:05:53 +0000 | [diff] [blame] | 505 | CatName); |
| 506 | CatIDecl->setClassInterface(IDecl); |
| 507 | CatIDecl->insertNextClassCategory(); |
| 508 | } |
| 509 | } |
| 510 | |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 511 | ObjCCategoryImplDecl *CDecl = |
Douglas Gregor | d043410 | 2009-01-09 00:49:46 +0000 | [diff] [blame] | 512 | ObjCCategoryImplDecl::Create(Context, CurContext, AtCatImplLoc, CatName, |
| 513 | IDecl); |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 514 | /// Check that class of this category is already completely declared. |
| 515 | if (!IDecl || IDecl->isForwardDecl()) |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 516 | Diag(ClassLoc, diag::err_undef_interface) << ClassName; |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 517 | |
Douglas Gregor | d043410 | 2009-01-09 00:49:46 +0000 | [diff] [blame] | 518 | // FIXME: PushOnScopeChains? |
Argyrios Kyrtzidis | 17945a0 | 2009-06-30 02:36:12 +0000 | [diff] [blame] | 519 | CurContext->addDecl(CDecl); |
Douglas Gregor | d043410 | 2009-01-09 00:49:46 +0000 | [diff] [blame] | 520 | |
Argyrios Kyrtzidis | 8a1d722 | 2009-07-21 00:05:53 +0000 | [diff] [blame] | 521 | /// Check that CatName, category name, is not used in another implementation. |
| 522 | if (CatIDecl) { |
| 523 | if (CatIDecl->getImplementation()) { |
| 524 | Diag(ClassLoc, diag::err_dup_implementation_category) << ClassName |
| 525 | << CatName; |
| 526 | Diag(CatIDecl->getImplementation()->getLocation(), |
| 527 | diag::note_previous_definition); |
| 528 | } else |
| 529 | CatIDecl->setImplementation(CDecl); |
| 530 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 531 | |
Anders Carlsson | 1528145 | 2008-11-04 16:57:32 +0000 | [diff] [blame] | 532 | CheckObjCDeclScope(CDecl); |
Chris Lattner | b28317a | 2009-03-28 19:18:32 +0000 | [diff] [blame] | 533 | return DeclPtrTy::make(CDecl); |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 534 | } |
| 535 | |
Chris Lattner | b28317a | 2009-03-28 19:18:32 +0000 | [diff] [blame] | 536 | Sema::DeclPtrTy Sema::ActOnStartClassImplementation( |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 537 | SourceLocation AtClassImplLoc, |
| 538 | IdentifierInfo *ClassName, SourceLocation ClassLoc, |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 539 | IdentifierInfo *SuperClassname, |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 540 | SourceLocation SuperClassLoc) { |
Ted Kremenek | a526c5c | 2008-01-07 19:49:32 +0000 | [diff] [blame] | 541 | ObjCInterfaceDecl* IDecl = 0; |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 542 | // Check for another declaration kind with the same name. |
John McCall | f36e02d | 2009-10-09 21:13:30 +0000 | [diff] [blame] | 543 | NamedDecl *PrevDecl |
Douglas Gregor | c0b3964 | 2010-04-15 23:40:53 +0000 | [diff] [blame] | 544 | = LookupSingleName(TUScope, ClassName, ClassLoc, LookupOrdinaryName, |
| 545 | ForRedeclaration); |
Ted Kremenek | a526c5c | 2008-01-07 19:49:32 +0000 | [diff] [blame] | 546 | if (PrevDecl && !isa<ObjCInterfaceDecl>(PrevDecl)) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 547 | Diag(ClassLoc, diag::err_redefinition_different_kind) << ClassName; |
Chris Lattner | 5f4a682 | 2008-11-23 23:12:31 +0000 | [diff] [blame] | 548 | Diag(PrevDecl->getLocation(), diag::note_previous_definition); |
Douglas Gregor | 95ff742 | 2010-01-04 17:27:12 +0000 | [diff] [blame] | 549 | } else if ((IDecl = dyn_cast_or_null<ObjCInterfaceDecl>(PrevDecl))) { |
| 550 | // If this is a forward declaration of an interface, warn. |
| 551 | if (IDecl->isForwardDecl()) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 552 | Diag(ClassLoc, diag::warn_undef_interface) << ClassName; |
Fariborz Jahanian | 77a6be4 | 2009-04-23 21:49:04 +0000 | [diff] [blame] | 553 | IDecl = 0; |
| 554 | } |
Douglas Gregor | 95ff742 | 2010-01-04 17:27:12 +0000 | [diff] [blame] | 555 | } else { |
| 556 | // We did not find anything with the name ClassName; try to correct for |
| 557 | // typos in the class name. |
| 558 | LookupResult R(*this, ClassName, ClassLoc, LookupOrdinaryName); |
Douglas Gregor | aaf8716 | 2010-04-14 20:04:41 +0000 | [diff] [blame] | 559 | if (CorrectTypo(R, TUScope, 0, 0, false, CTC_NoKeywords) && |
Douglas Gregor | 95ff742 | 2010-01-04 17:27:12 +0000 | [diff] [blame] | 560 | (IDecl = R.getAsSingle<ObjCInterfaceDecl>())) { |
Douglas Gregor | a6f2638 | 2010-01-06 23:44:25 +0000 | [diff] [blame] | 561 | // Suggest the (potentially) correct interface name. However, put the |
| 562 | // fix-it hint itself in a separate note, since changing the name in |
| 563 | // the warning would make the fix-it change semantics.However, don't |
Douglas Gregor | 95ff742 | 2010-01-04 17:27:12 +0000 | [diff] [blame] | 564 | // provide a code-modification hint or use the typo name for recovery, |
| 565 | // because this is just a warning. The program may actually be correct. |
| 566 | Diag(ClassLoc, diag::warn_undef_interface_suggest) |
| 567 | << ClassName << R.getLookupName(); |
Douglas Gregor | a6f2638 | 2010-01-06 23:44:25 +0000 | [diff] [blame] | 568 | Diag(IDecl->getLocation(), diag::note_previous_decl) |
| 569 | << R.getLookupName() |
Douglas Gregor | 849b243 | 2010-03-31 17:46:05 +0000 | [diff] [blame] | 570 | << FixItHint::CreateReplacement(ClassLoc, |
| 571 | R.getLookupName().getAsString()); |
Douglas Gregor | 95ff742 | 2010-01-04 17:27:12 +0000 | [diff] [blame] | 572 | IDecl = 0; |
| 573 | } else { |
| 574 | Diag(ClassLoc, diag::warn_undef_interface) << ClassName; |
| 575 | } |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 576 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 577 | |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 578 | // Check that super class name is valid class name |
Ted Kremenek | a526c5c | 2008-01-07 19:49:32 +0000 | [diff] [blame] | 579 | ObjCInterfaceDecl* SDecl = 0; |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 580 | if (SuperClassname) { |
| 581 | // Check if a different kind of symbol declared in this scope. |
Douglas Gregor | c83c687 | 2010-04-15 22:33:43 +0000 | [diff] [blame] | 582 | PrevDecl = LookupSingleName(TUScope, SuperClassname, SuperClassLoc, |
| 583 | LookupOrdinaryName); |
Ted Kremenek | a526c5c | 2008-01-07 19:49:32 +0000 | [diff] [blame] | 584 | if (PrevDecl && !isa<ObjCInterfaceDecl>(PrevDecl)) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 585 | Diag(SuperClassLoc, diag::err_redefinition_different_kind) |
| 586 | << SuperClassname; |
Chris Lattner | 5f4a682 | 2008-11-23 23:12:31 +0000 | [diff] [blame] | 587 | Diag(PrevDecl->getLocation(), diag::note_previous_definition); |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 588 | } else { |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 589 | SDecl = dyn_cast_or_null<ObjCInterfaceDecl>(PrevDecl); |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 590 | if (!SDecl) |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 591 | Diag(SuperClassLoc, diag::err_undef_superclass) |
| 592 | << SuperClassname << ClassName; |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 593 | else if (IDecl && IDecl->getSuperClass() != SDecl) { |
| 594 | // This implementation and its interface do not have the same |
| 595 | // super class. |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 596 | Diag(SuperClassLoc, diag::err_conflicting_super_class) |
Chris Lattner | 08631c5 | 2008-11-23 21:45:46 +0000 | [diff] [blame] | 597 | << SDecl->getDeclName(); |
Chris Lattner | 5f4a682 | 2008-11-23 23:12:31 +0000 | [diff] [blame] | 598 | Diag(SDecl->getLocation(), diag::note_previous_definition); |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 599 | } |
| 600 | } |
| 601 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 602 | |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 603 | if (!IDecl) { |
| 604 | // Legacy case of @implementation with no corresponding @interface. |
| 605 | // Build, chain & install the interface decl into the identifier. |
Daniel Dunbar | f641492 | 2008-08-20 18:02:42 +0000 | [diff] [blame] | 606 | |
Mike Stump | 390b4cc | 2009-05-16 07:39:55 +0000 | [diff] [blame] | 607 | // FIXME: Do we support attributes on the @implementation? If so we should |
| 608 | // copy them over. |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 609 | IDecl = ObjCInterfaceDecl::Create(Context, CurContext, AtClassImplLoc, |
Douglas Gregor | d043410 | 2009-01-09 00:49:46 +0000 | [diff] [blame] | 610 | ClassName, ClassLoc, false, true); |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 611 | IDecl->setSuperClass(SDecl); |
| 612 | IDecl->setLocEnd(ClassLoc); |
Douglas Gregor | 8b9fb30 | 2009-04-24 00:16:12 +0000 | [diff] [blame] | 613 | |
| 614 | PushOnScopeChains(IDecl, TUScope); |
Daniel Dunbar | 24c8991 | 2009-04-21 21:41:56 +0000 | [diff] [blame] | 615 | } else { |
| 616 | // Mark the interface as being completed, even if it was just as |
| 617 | // @class ....; |
| 618 | // declaration; the user cannot reopen it. |
| 619 | IDecl->setForwardDecl(false); |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 620 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 621 | |
| 622 | ObjCImplementationDecl* IMPDecl = |
| 623 | ObjCImplementationDecl::Create(Context, CurContext, AtClassImplLoc, |
Douglas Gregor | 4afa39d | 2009-01-20 01:17:11 +0000 | [diff] [blame] | 624 | IDecl, SDecl); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 625 | |
Anders Carlsson | 1528145 | 2008-11-04 16:57:32 +0000 | [diff] [blame] | 626 | if (CheckObjCDeclScope(IMPDecl)) |
Chris Lattner | b28317a | 2009-03-28 19:18:32 +0000 | [diff] [blame] | 627 | return DeclPtrTy::make(IMPDecl); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 628 | |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 629 | // Check that there is no duplicate implementation of this class. |
Argyrios Kyrtzidis | 8701877 | 2009-07-21 00:06:04 +0000 | [diff] [blame] | 630 | if (IDecl->getImplementation()) { |
Chris Lattner | 75c9cae | 2008-03-16 20:53:07 +0000 | [diff] [blame] | 631 | // FIXME: Don't leak everything! |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 632 | Diag(ClassLoc, diag::err_dup_implementation_class) << ClassName; |
Argyrios Kyrtzidis | 8701877 | 2009-07-21 00:06:04 +0000 | [diff] [blame] | 633 | Diag(IDecl->getImplementation()->getLocation(), |
| 634 | diag::note_previous_definition); |
| 635 | } else { // add it to the list. |
Argyrios Kyrtzidis | 8a1d722 | 2009-07-21 00:05:53 +0000 | [diff] [blame] | 636 | IDecl->setImplementation(IMPDecl); |
Douglas Gregor | 8fc463a | 2009-04-24 00:11:27 +0000 | [diff] [blame] | 637 | PushOnScopeChains(IMPDecl, TUScope); |
Argyrios Kyrtzidis | 8a1d722 | 2009-07-21 00:05:53 +0000 | [diff] [blame] | 638 | } |
Chris Lattner | b28317a | 2009-03-28 19:18:32 +0000 | [diff] [blame] | 639 | return DeclPtrTy::make(IMPDecl); |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 640 | } |
| 641 | |
Ted Kremenek | a526c5c | 2008-01-07 19:49:32 +0000 | [diff] [blame] | 642 | void Sema::CheckImplementationIvars(ObjCImplementationDecl *ImpDecl, |
| 643 | ObjCIvarDecl **ivars, unsigned numIvars, |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 644 | SourceLocation RBrace) { |
| 645 | assert(ImpDecl && "missing implementation decl"); |
Douglas Gregor | 4afa39d | 2009-01-20 01:17:11 +0000 | [diff] [blame] | 646 | ObjCInterfaceDecl* IDecl = ImpDecl->getClassInterface(); |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 647 | if (!IDecl) |
| 648 | return; |
| 649 | /// Check case of non-existing @interface decl. |
| 650 | /// (legacy objective-c @implementation decl without an @interface decl). |
| 651 | /// Add implementations's ivar to the synthesize class's ivar list. |
Steve Naroff | 33feeb0 | 2009-04-20 20:09:33 +0000 | [diff] [blame] | 652 | if (IDecl->isImplicitInterfaceDecl()) { |
Chris Lattner | 38af2de | 2009-02-20 21:35:13 +0000 | [diff] [blame] | 653 | IDecl->setLocEnd(RBrace); |
Fariborz Jahanian | 3a21cd9 | 2010-02-17 17:00:07 +0000 | [diff] [blame] | 654 | // Add ivar's to class's DeclContext. |
| 655 | for (unsigned i = 0, e = numIvars; i != e; ++i) { |
Fariborz Jahanian | 2f14c4d | 2010-02-17 18:10:54 +0000 | [diff] [blame] | 656 | ivars[i]->setLexicalDeclContext(ImpDecl); |
| 657 | IDecl->makeDeclVisibleInContext(ivars[i], false); |
Fariborz Jahanian | 11062e1 | 2010-02-19 00:31:17 +0000 | [diff] [blame] | 658 | ImpDecl->addDecl(ivars[i]); |
Fariborz Jahanian | 3a21cd9 | 2010-02-17 17:00:07 +0000 | [diff] [blame] | 659 | } |
| 660 | |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 661 | return; |
| 662 | } |
| 663 | // If implementation has empty ivar list, just return. |
| 664 | if (numIvars == 0) |
| 665 | return; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 666 | |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 667 | assert(ivars && "missing @implementation ivars"); |
Fariborz Jahanian | bd94d44 | 2010-02-19 20:58:54 +0000 | [diff] [blame] | 668 | if (LangOpts.ObjCNonFragileABI2) { |
| 669 | if (ImpDecl->getSuperClass()) |
| 670 | Diag(ImpDecl->getLocation(), diag::warn_on_superclass_use); |
| 671 | for (unsigned i = 0; i < numIvars; i++) { |
| 672 | ObjCIvarDecl* ImplIvar = ivars[i]; |
| 673 | if (const ObjCIvarDecl *ClsIvar = |
| 674 | IDecl->getIvarDecl(ImplIvar->getIdentifier())) { |
| 675 | Diag(ImplIvar->getLocation(), diag::err_duplicate_ivar_declaration); |
| 676 | Diag(ClsIvar->getLocation(), diag::note_previous_definition); |
| 677 | continue; |
| 678 | } |
Fariborz Jahanian | bd94d44 | 2010-02-19 20:58:54 +0000 | [diff] [blame] | 679 | // Instance ivar to Implementation's DeclContext. |
| 680 | ImplIvar->setLexicalDeclContext(ImpDecl); |
| 681 | IDecl->makeDeclVisibleInContext(ImplIvar, false); |
| 682 | ImpDecl->addDecl(ImplIvar); |
| 683 | } |
| 684 | return; |
| 685 | } |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 686 | // Check interface's Ivar list against those in the implementation. |
| 687 | // names and types must match. |
| 688 | // |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 689 | unsigned j = 0; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 690 | ObjCInterfaceDecl::ivar_iterator |
Chris Lattner | 4c52509 | 2007-12-12 17:58:05 +0000 | [diff] [blame] | 691 | IVI = IDecl->ivar_begin(), IVE = IDecl->ivar_end(); |
| 692 | for (; numIvars > 0 && IVI != IVE; ++IVI) { |
Ted Kremenek | a526c5c | 2008-01-07 19:49:32 +0000 | [diff] [blame] | 693 | ObjCIvarDecl* ImplIvar = ivars[j++]; |
| 694 | ObjCIvarDecl* ClsIvar = *IVI; |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 695 | assert (ImplIvar && "missing implementation ivar"); |
| 696 | assert (ClsIvar && "missing class ivar"); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 697 | |
Steve Naroff | ca33129 | 2009-03-03 14:49:36 +0000 | [diff] [blame] | 698 | // First, make sure the types match. |
Chris Lattner | 1b63eef | 2008-07-27 00:05:05 +0000 | [diff] [blame] | 699 | if (Context.getCanonicalType(ImplIvar->getType()) != |
| 700 | Context.getCanonicalType(ClsIvar->getType())) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 701 | Diag(ImplIvar->getLocation(), diag::err_conflicting_ivar_type) |
Chris Lattner | 08631c5 | 2008-11-23 21:45:46 +0000 | [diff] [blame] | 702 | << ImplIvar->getIdentifier() |
| 703 | << ImplIvar->getType() << ClsIvar->getType(); |
Chris Lattner | 5f4a682 | 2008-11-23 23:12:31 +0000 | [diff] [blame] | 704 | Diag(ClsIvar->getLocation(), diag::note_previous_definition); |
Steve Naroff | ca33129 | 2009-03-03 14:49:36 +0000 | [diff] [blame] | 705 | } else if (ImplIvar->isBitField() && ClsIvar->isBitField()) { |
| 706 | Expr *ImplBitWidth = ImplIvar->getBitWidth(); |
| 707 | Expr *ClsBitWidth = ClsIvar->getBitWidth(); |
Eli Friedman | 9a901bb | 2009-04-26 19:19:15 +0000 | [diff] [blame] | 708 | if (ImplBitWidth->EvaluateAsInt(Context).getZExtValue() != |
| 709 | ClsBitWidth->EvaluateAsInt(Context).getZExtValue()) { |
Steve Naroff | ca33129 | 2009-03-03 14:49:36 +0000 | [diff] [blame] | 710 | Diag(ImplBitWidth->getLocStart(), diag::err_conflicting_ivar_bitwidth) |
| 711 | << ImplIvar->getIdentifier(); |
| 712 | Diag(ClsBitWidth->getLocStart(), diag::note_previous_definition); |
| 713 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 714 | } |
Steve Naroff | ca33129 | 2009-03-03 14:49:36 +0000 | [diff] [blame] | 715 | // Make sure the names are identical. |
| 716 | if (ImplIvar->getIdentifier() != ClsIvar->getIdentifier()) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 717 | Diag(ImplIvar->getLocation(), diag::err_conflicting_ivar_name) |
Chris Lattner | 08631c5 | 2008-11-23 21:45:46 +0000 | [diff] [blame] | 718 | << ImplIvar->getIdentifier() << ClsIvar->getIdentifier(); |
Chris Lattner | 5f4a682 | 2008-11-23 23:12:31 +0000 | [diff] [blame] | 719 | Diag(ClsIvar->getLocation(), diag::note_previous_definition); |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 720 | } |
| 721 | --numIvars; |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 722 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 723 | |
Chris Lattner | 609e4c7 | 2007-12-12 18:11:49 +0000 | [diff] [blame] | 724 | if (numIvars > 0) |
Chris Lattner | 0e39105 | 2007-12-12 18:19:52 +0000 | [diff] [blame] | 725 | Diag(ivars[j]->getLocation(), diag::err_inconsistant_ivar_count); |
Chris Lattner | 609e4c7 | 2007-12-12 18:11:49 +0000 | [diff] [blame] | 726 | else if (IVI != IVE) |
Chris Lattner | 0e39105 | 2007-12-12 18:19:52 +0000 | [diff] [blame] | 727 | Diag((*IVI)->getLocation(), diag::err_inconsistant_ivar_count); |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 728 | } |
| 729 | |
Steve Naroff | 3c2eb66 | 2008-02-10 21:38:56 +0000 | [diff] [blame] | 730 | void Sema::WarnUndefinedMethod(SourceLocation ImpLoc, ObjCMethodDecl *method, |
Fariborz Jahanian | 5214683 | 2010-03-31 18:23:33 +0000 | [diff] [blame] | 731 | bool &IncompleteImpl, unsigned DiagID) { |
Steve Naroff | 3c2eb66 | 2008-02-10 21:38:56 +0000 | [diff] [blame] | 732 | if (!IncompleteImpl) { |
| 733 | Diag(ImpLoc, diag::warn_incomplete_impl); |
| 734 | IncompleteImpl = true; |
| 735 | } |
Fariborz Jahanian | 5214683 | 2010-03-31 18:23:33 +0000 | [diff] [blame] | 736 | Diag(method->getLocation(), DiagID) |
Fariborz Jahanian | 8822f7c | 2010-03-27 19:02:17 +0000 | [diff] [blame] | 737 | << method->getDeclName(); |
Steve Naroff | 3c2eb66 | 2008-02-10 21:38:56 +0000 | [diff] [blame] | 738 | } |
| 739 | |
Fariborz Jahanian | 8daab97 | 2008-12-05 18:18:52 +0000 | [diff] [blame] | 740 | void Sema::WarnConflictingTypedMethods(ObjCMethodDecl *ImpMethodDecl, |
| 741 | ObjCMethodDecl *IntfMethodDecl) { |
Chris Lattner | 5272b7f | 2009-04-11 18:01:59 +0000 | [diff] [blame] | 742 | if (!Context.typesAreCompatible(IntfMethodDecl->getResultType(), |
Fariborz Jahanian | 2574a68 | 2009-05-14 23:52:54 +0000 | [diff] [blame] | 743 | ImpMethodDecl->getResultType()) && |
Steve Naroff | 4084c30 | 2009-07-23 01:01:38 +0000 | [diff] [blame] | 744 | !Context.QualifiedIdConformsQualifiedId(IntfMethodDecl->getResultType(), |
| 745 | ImpMethodDecl->getResultType())) { |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 746 | Diag(ImpMethodDecl->getLocation(), diag::warn_conflicting_ret_types) |
Chris Lattner | 3aff919 | 2009-04-11 19:58:42 +0000 | [diff] [blame] | 747 | << ImpMethodDecl->getDeclName() << IntfMethodDecl->getResultType() |
| 748 | << ImpMethodDecl->getResultType(); |
Fariborz Jahanian | 8daab97 | 2008-12-05 18:18:52 +0000 | [diff] [blame] | 749 | Diag(IntfMethodDecl->getLocation(), diag::note_previous_definition); |
| 750 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 751 | |
Chris Lattner | 3aff919 | 2009-04-11 19:58:42 +0000 | [diff] [blame] | 752 | for (ObjCMethodDecl::param_iterator IM = ImpMethodDecl->param_begin(), |
| 753 | IF = IntfMethodDecl->param_begin(), EM = ImpMethodDecl->param_end(); |
| 754 | IM != EM; ++IM, ++IF) { |
Fariborz Jahanian | 3393f81 | 2009-11-18 18:56:09 +0000 | [diff] [blame] | 755 | QualType ParmDeclTy = (*IF)->getType().getUnqualifiedType(); |
| 756 | QualType ParmImpTy = (*IM)->getType().getUnqualifiedType(); |
| 757 | if (Context.typesAreCompatible(ParmDeclTy, ParmImpTy) || |
| 758 | Context.QualifiedIdConformsQualifiedId(ParmDeclTy, ParmImpTy)) |
Chris Lattner | 3aff919 | 2009-04-11 19:58:42 +0000 | [diff] [blame] | 759 | continue; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 760 | |
| 761 | Diag((*IM)->getLocation(), diag::warn_conflicting_param_types) |
Chris Lattner | 3aff919 | 2009-04-11 19:58:42 +0000 | [diff] [blame] | 762 | << ImpMethodDecl->getDeclName() << (*IF)->getType() |
| 763 | << (*IM)->getType(); |
Chris Lattner | d1e0f5a | 2009-04-11 20:14:49 +0000 | [diff] [blame] | 764 | Diag((*IF)->getLocation(), diag::note_previous_definition); |
Chris Lattner | 3aff919 | 2009-04-11 19:58:42 +0000 | [diff] [blame] | 765 | } |
Fariborz Jahanian | 8daab97 | 2008-12-05 18:18:52 +0000 | [diff] [blame] | 766 | } |
| 767 | |
Mike Stump | 390b4cc | 2009-05-16 07:39:55 +0000 | [diff] [blame] | 768 | /// FIXME: Type hierarchies in Objective-C can be deep. We could most likely |
| 769 | /// improve the efficiency of selector lookups and type checking by associating |
| 770 | /// with each protocol / interface / category the flattened instance tables. If |
| 771 | /// we used an immutable set to keep the table then it wouldn't add significant |
| 772 | /// memory cost and it would be handy for lookups. |
Daniel Dunbar | b20ef3e | 2008-08-27 05:40:03 +0000 | [diff] [blame] | 773 | |
Steve Naroff | efe7f36 | 2008-02-08 22:06:17 +0000 | [diff] [blame] | 774 | /// CheckProtocolMethodDefs - This routine checks unimplemented methods |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 775 | /// Declared in protocol, and those referenced by it. |
Steve Naroff | efe7f36 | 2008-02-08 22:06:17 +0000 | [diff] [blame] | 776 | void Sema::CheckProtocolMethodDefs(SourceLocation ImpLoc, |
| 777 | ObjCProtocolDecl *PDecl, |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 778 | bool& IncompleteImpl, |
Steve Naroff | efe7f36 | 2008-02-08 22:06:17 +0000 | [diff] [blame] | 779 | const llvm::DenseSet<Selector> &InsMap, |
Daniel Dunbar | 7ad1b1f | 2008-09-04 20:01:15 +0000 | [diff] [blame] | 780 | const llvm::DenseSet<Selector> &ClsMap, |
Fariborz Jahanian | f283859 | 2010-03-27 21:10:05 +0000 | [diff] [blame] | 781 | ObjCContainerDecl *CDecl) { |
| 782 | ObjCInterfaceDecl *IDecl; |
| 783 | if (ObjCCategoryDecl *C = dyn_cast<ObjCCategoryDecl>(CDecl)) |
| 784 | IDecl = C->getClassInterface(); |
| 785 | else |
| 786 | IDecl = dyn_cast<ObjCInterfaceDecl>(CDecl); |
| 787 | assert (IDecl && "CheckProtocolMethodDefs - IDecl is null"); |
| 788 | |
Daniel Dunbar | 7ad1b1f | 2008-09-04 20:01:15 +0000 | [diff] [blame] | 789 | ObjCInterfaceDecl *Super = IDecl->getSuperClass(); |
Fariborz Jahanian | cd18762 | 2009-05-22 17:12:32 +0000 | [diff] [blame] | 790 | ObjCInterfaceDecl *NSIDecl = 0; |
| 791 | if (getLangOptions().NeXTRuntime) { |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 792 | // check to see if class implements forwardInvocation method and objects |
| 793 | // of this class are derived from 'NSProxy' so that to forward requests |
Fariborz Jahanian | cd18762 | 2009-05-22 17:12:32 +0000 | [diff] [blame] | 794 | // from one object to another. |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 795 | // Under such conditions, which means that every method possible is |
| 796 | // implemented in the class, we should not issue "Method definition not |
Fariborz Jahanian | cd18762 | 2009-05-22 17:12:32 +0000 | [diff] [blame] | 797 | // found" warnings. |
| 798 | // FIXME: Use a general GetUnarySelector method for this. |
| 799 | IdentifierInfo* II = &Context.Idents.get("forwardInvocation"); |
| 800 | Selector fISelector = Context.Selectors.getSelector(1, &II); |
| 801 | if (InsMap.count(fISelector)) |
| 802 | // Is IDecl derived from 'NSProxy'? If so, no instance methods |
| 803 | // need be implemented in the implementation. |
| 804 | NSIDecl = IDecl->lookupInheritedClass(&Context.Idents.get("NSProxy")); |
| 805 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 806 | |
Daniel Dunbar | 7ad1b1f | 2008-09-04 20:01:15 +0000 | [diff] [blame] | 807 | // If a method lookup fails locally we still need to look and see if |
| 808 | // the method was implemented by a base class or an inherited |
| 809 | // protocol. This lookup is slow, but occurs rarely in correct code |
| 810 | // and otherwise would terminate in a warning. |
| 811 | |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 812 | // check unimplemented instance methods. |
Fariborz Jahanian | cd18762 | 2009-05-22 17:12:32 +0000 | [diff] [blame] | 813 | if (!NSIDecl) |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 814 | for (ObjCProtocolDecl::instmeth_iterator I = PDecl->instmeth_begin(), |
Argyrios Kyrtzidis | 17945a0 | 2009-06-30 02:36:12 +0000 | [diff] [blame] | 815 | E = PDecl->instmeth_end(); I != E; ++I) { |
Fariborz Jahanian | cd18762 | 2009-05-22 17:12:32 +0000 | [diff] [blame] | 816 | ObjCMethodDecl *method = *I; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 817 | if (method->getImplementationControl() != ObjCMethodDecl::Optional && |
Fariborz Jahanian | cd18762 | 2009-05-22 17:12:32 +0000 | [diff] [blame] | 818 | !method->isSynthesized() && !InsMap.count(method->getSelector()) && |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 819 | (!Super || |
Argyrios Kyrtzidis | 17945a0 | 2009-06-30 02:36:12 +0000 | [diff] [blame] | 820 | !Super->lookupInstanceMethod(method->getSelector()))) { |
Fariborz Jahanian | cd18762 | 2009-05-22 17:12:32 +0000 | [diff] [blame] | 821 | // Ugly, but necessary. Method declared in protcol might have |
| 822 | // have been synthesized due to a property declared in the class which |
| 823 | // uses the protocol. |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 824 | ObjCMethodDecl *MethodInClass = |
Argyrios Kyrtzidis | 17945a0 | 2009-06-30 02:36:12 +0000 | [diff] [blame] | 825 | IDecl->lookupInstanceMethod(method->getSelector()); |
Fariborz Jahanian | 8822f7c | 2010-03-27 19:02:17 +0000 | [diff] [blame] | 826 | if (!MethodInClass || !MethodInClass->isSynthesized()) { |
Fariborz Jahanian | 5214683 | 2010-03-31 18:23:33 +0000 | [diff] [blame] | 827 | unsigned DIAG = diag::warn_unimplemented_protocol_method; |
| 828 | if (Diags.getDiagnosticLevel(DIAG) != Diagnostic::Ignored) { |
| 829 | WarnUndefinedMethod(ImpLoc, method, IncompleteImpl, DIAG); |
| 830 | Diag(CDecl->getLocation(), diag::note_required_for_protocol_at) |
| 831 | << PDecl->getDeclName(); |
| 832 | } |
Fariborz Jahanian | 8822f7c | 2010-03-27 19:02:17 +0000 | [diff] [blame] | 833 | } |
Fariborz Jahanian | cd18762 | 2009-05-22 17:12:32 +0000 | [diff] [blame] | 834 | } |
| 835 | } |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 836 | // check unimplemented class methods |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 837 | for (ObjCProtocolDecl::classmeth_iterator |
Argyrios Kyrtzidis | 17945a0 | 2009-06-30 02:36:12 +0000 | [diff] [blame] | 838 | I = PDecl->classmeth_begin(), E = PDecl->classmeth_end(); |
Douglas Gregor | 6ab3524 | 2009-04-09 21:40:53 +0000 | [diff] [blame] | 839 | I != E; ++I) { |
Ted Kremenek | a526c5c | 2008-01-07 19:49:32 +0000 | [diff] [blame] | 840 | ObjCMethodDecl *method = *I; |
Daniel Dunbar | 7ad1b1f | 2008-09-04 20:01:15 +0000 | [diff] [blame] | 841 | if (method->getImplementationControl() != ObjCMethodDecl::Optional && |
| 842 | !ClsMap.count(method->getSelector()) && |
Fariborz Jahanian | 8822f7c | 2010-03-27 19:02:17 +0000 | [diff] [blame] | 843 | (!Super || !Super->lookupClassMethod(method->getSelector()))) { |
Fariborz Jahanian | 5214683 | 2010-03-31 18:23:33 +0000 | [diff] [blame] | 844 | unsigned DIAG = diag::warn_unimplemented_protocol_method; |
| 845 | if (Diags.getDiagnosticLevel(DIAG) != Diagnostic::Ignored) { |
| 846 | WarnUndefinedMethod(ImpLoc, method, IncompleteImpl, DIAG); |
| 847 | Diag(IDecl->getLocation(), diag::note_required_for_protocol_at) << |
| 848 | PDecl->getDeclName(); |
| 849 | } |
Fariborz Jahanian | 8822f7c | 2010-03-27 19:02:17 +0000 | [diff] [blame] | 850 | } |
Steve Naroff | 58dbdeb | 2007-12-14 23:37:57 +0000 | [diff] [blame] | 851 | } |
Chris Lattner | 780f329 | 2008-07-21 21:32:27 +0000 | [diff] [blame] | 852 | // Check on this protocols's referenced protocols, recursively. |
| 853 | for (ObjCProtocolDecl::protocol_iterator PI = PDecl->protocol_begin(), |
| 854 | E = PDecl->protocol_end(); PI != E; ++PI) |
Daniel Dunbar | 7ad1b1f | 2008-09-04 20:01:15 +0000 | [diff] [blame] | 855 | CheckProtocolMethodDefs(ImpLoc, *PI, IncompleteImpl, InsMap, ClsMap, IDecl); |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 856 | } |
| 857 | |
Fariborz Jahanian | b33f3ad | 2009-05-01 20:07:12 +0000 | [diff] [blame] | 858 | /// MatchAllMethodDeclarations - Check methods declaraed in interface or |
| 859 | /// or protocol against those declared in their implementations. |
| 860 | /// |
| 861 | void Sema::MatchAllMethodDeclarations(const llvm::DenseSet<Selector> &InsMap, |
| 862 | const llvm::DenseSet<Selector> &ClsMap, |
| 863 | llvm::DenseSet<Selector> &InsMapSeen, |
| 864 | llvm::DenseSet<Selector> &ClsMapSeen, |
| 865 | ObjCImplDecl* IMPDecl, |
| 866 | ObjCContainerDecl* CDecl, |
| 867 | bool &IncompleteImpl, |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 868 | bool ImmediateClass) { |
Fariborz Jahanian | b33f3ad | 2009-05-01 20:07:12 +0000 | [diff] [blame] | 869 | // Check and see if instance methods in class interface have been |
| 870 | // implemented in the implementation class. If so, their types match. |
Argyrios Kyrtzidis | 17945a0 | 2009-06-30 02:36:12 +0000 | [diff] [blame] | 871 | for (ObjCInterfaceDecl::instmeth_iterator I = CDecl->instmeth_begin(), |
| 872 | E = CDecl->instmeth_end(); I != E; ++I) { |
Fariborz Jahanian | b33f3ad | 2009-05-01 20:07:12 +0000 | [diff] [blame] | 873 | if (InsMapSeen.count((*I)->getSelector())) |
| 874 | continue; |
| 875 | InsMapSeen.insert((*I)->getSelector()); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 876 | if (!(*I)->isSynthesized() && |
Fariborz Jahanian | b33f3ad | 2009-05-01 20:07:12 +0000 | [diff] [blame] | 877 | !InsMap.count((*I)->getSelector())) { |
| 878 | if (ImmediateClass) |
Fariborz Jahanian | 5214683 | 2010-03-31 18:23:33 +0000 | [diff] [blame] | 879 | WarnUndefinedMethod(IMPDecl->getLocation(), *I, IncompleteImpl, |
| 880 | diag::note_undef_method_impl); |
Fariborz Jahanian | b33f3ad | 2009-05-01 20:07:12 +0000 | [diff] [blame] | 881 | continue; |
Mike Stump | ac5fc7c | 2009-08-04 21:02:39 +0000 | [diff] [blame] | 882 | } else { |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 883 | ObjCMethodDecl *ImpMethodDecl = |
Argyrios Kyrtzidis | 17945a0 | 2009-06-30 02:36:12 +0000 | [diff] [blame] | 884 | IMPDecl->getInstanceMethod((*I)->getSelector()); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 885 | ObjCMethodDecl *IntfMethodDecl = |
Argyrios Kyrtzidis | 17945a0 | 2009-06-30 02:36:12 +0000 | [diff] [blame] | 886 | CDecl->getInstanceMethod((*I)->getSelector()); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 887 | assert(IntfMethodDecl && |
Fariborz Jahanian | b33f3ad | 2009-05-01 20:07:12 +0000 | [diff] [blame] | 888 | "IntfMethodDecl is null in ImplMethodsVsClassMethods"); |
| 889 | // ImpMethodDecl may be null as in a @dynamic property. |
| 890 | if (ImpMethodDecl) |
| 891 | WarnConflictingTypedMethods(ImpMethodDecl, IntfMethodDecl); |
| 892 | } |
| 893 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 894 | |
Fariborz Jahanian | b33f3ad | 2009-05-01 20:07:12 +0000 | [diff] [blame] | 895 | // Check and see if class methods in class interface have been |
| 896 | // implemented in the implementation class. If so, their types match. |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 897 | for (ObjCInterfaceDecl::classmeth_iterator |
Argyrios Kyrtzidis | 17945a0 | 2009-06-30 02:36:12 +0000 | [diff] [blame] | 898 | I = CDecl->classmeth_begin(), E = CDecl->classmeth_end(); I != E; ++I) { |
Fariborz Jahanian | b33f3ad | 2009-05-01 20:07:12 +0000 | [diff] [blame] | 899 | if (ClsMapSeen.count((*I)->getSelector())) |
| 900 | continue; |
| 901 | ClsMapSeen.insert((*I)->getSelector()); |
| 902 | if (!ClsMap.count((*I)->getSelector())) { |
| 903 | if (ImmediateClass) |
Fariborz Jahanian | 5214683 | 2010-03-31 18:23:33 +0000 | [diff] [blame] | 904 | WarnUndefinedMethod(IMPDecl->getLocation(), *I, IncompleteImpl, |
| 905 | diag::note_undef_method_impl); |
Mike Stump | ac5fc7c | 2009-08-04 21:02:39 +0000 | [diff] [blame] | 906 | } else { |
Argyrios Kyrtzidis | 17945a0 | 2009-06-30 02:36:12 +0000 | [diff] [blame] | 907 | ObjCMethodDecl *ImpMethodDecl = |
| 908 | IMPDecl->getClassMethod((*I)->getSelector()); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 909 | ObjCMethodDecl *IntfMethodDecl = |
Argyrios Kyrtzidis | 17945a0 | 2009-06-30 02:36:12 +0000 | [diff] [blame] | 910 | CDecl->getClassMethod((*I)->getSelector()); |
Fariborz Jahanian | b33f3ad | 2009-05-01 20:07:12 +0000 | [diff] [blame] | 911 | WarnConflictingTypedMethods(ImpMethodDecl, IntfMethodDecl); |
| 912 | } |
| 913 | } |
| 914 | if (ObjCInterfaceDecl *I = dyn_cast<ObjCInterfaceDecl> (CDecl)) { |
| 915 | // Check for any implementation of a methods declared in protocol. |
| 916 | for (ObjCInterfaceDecl::protocol_iterator PI = I->protocol_begin(), |
| 917 | E = I->protocol_end(); PI != E; ++PI) |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 918 | MatchAllMethodDeclarations(InsMap, ClsMap, InsMapSeen, ClsMapSeen, |
| 919 | IMPDecl, |
Fariborz Jahanian | b33f3ad | 2009-05-01 20:07:12 +0000 | [diff] [blame] | 920 | (*PI), IncompleteImpl, false); |
| 921 | if (I->getSuperClass()) |
| 922 | MatchAllMethodDeclarations(InsMap, ClsMap, InsMapSeen, ClsMapSeen, |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 923 | IMPDecl, |
Fariborz Jahanian | b33f3ad | 2009-05-01 20:07:12 +0000 | [diff] [blame] | 924 | I->getSuperClass(), IncompleteImpl, false); |
| 925 | } |
| 926 | } |
| 927 | |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 928 | void Sema::ImplMethodsVsClassMethods(ObjCImplDecl* IMPDecl, |
| 929 | ObjCContainerDecl* CDecl, |
Chris Lattner | cddc888 | 2009-03-01 00:56:52 +0000 | [diff] [blame] | 930 | bool IncompleteImpl) { |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 931 | llvm::DenseSet<Selector> InsMap; |
| 932 | // Check and see if instance methods in class interface have been |
| 933 | // implemented in the implementation class. |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 934 | for (ObjCImplementationDecl::instmeth_iterator |
Argyrios Kyrtzidis | 17945a0 | 2009-06-30 02:36:12 +0000 | [diff] [blame] | 935 | I = IMPDecl->instmeth_begin(), E = IMPDecl->instmeth_end(); I!=E; ++I) |
Chris Lattner | 4c52509 | 2007-12-12 17:58:05 +0000 | [diff] [blame] | 936 | InsMap.insert((*I)->getSelector()); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 937 | |
Fariborz Jahanian | 12bac25 | 2009-04-14 23:15:21 +0000 | [diff] [blame] | 938 | // Check and see if properties declared in the interface have either 1) |
| 939 | // an implementation or 2) there is a @synthesize/@dynamic implementation |
| 940 | // of the property in the @implementation. |
| 941 | if (isa<ObjCInterfaceDecl>(CDecl)) |
Fariborz Jahanian | 3ac1eda | 2010-01-20 01:51:55 +0000 | [diff] [blame] | 942 | DiagnoseUnimplementedProperties(IMPDecl, CDecl, InsMap); |
| 943 | |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 944 | llvm::DenseSet<Selector> ClsMap; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 945 | for (ObjCImplementationDecl::classmeth_iterator |
Argyrios Kyrtzidis | 17945a0 | 2009-06-30 02:36:12 +0000 | [diff] [blame] | 946 | I = IMPDecl->classmeth_begin(), |
| 947 | E = IMPDecl->classmeth_end(); I != E; ++I) |
Chris Lattner | 4c52509 | 2007-12-12 17:58:05 +0000 | [diff] [blame] | 948 | ClsMap.insert((*I)->getSelector()); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 949 | |
Fariborz Jahanian | b33f3ad | 2009-05-01 20:07:12 +0000 | [diff] [blame] | 950 | // Check for type conflict of methods declared in a class/protocol and |
| 951 | // its implementation; if any. |
| 952 | llvm::DenseSet<Selector> InsMapSeen, ClsMapSeen; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 953 | MatchAllMethodDeclarations(InsMap, ClsMap, InsMapSeen, ClsMapSeen, |
| 954 | IMPDecl, CDecl, |
Fariborz Jahanian | b33f3ad | 2009-05-01 20:07:12 +0000 | [diff] [blame] | 955 | IncompleteImpl, true); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 956 | |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 957 | // Check the protocol list for unimplemented methods in the @implementation |
| 958 | // class. |
Fariborz Jahanian | b33f3ad | 2009-05-01 20:07:12 +0000 | [diff] [blame] | 959 | // Check and see if class methods in class interface have been |
| 960 | // implemented in the implementation class. |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 961 | |
Chris Lattner | cddc888 | 2009-03-01 00:56:52 +0000 | [diff] [blame] | 962 | if (ObjCInterfaceDecl *I = dyn_cast<ObjCInterfaceDecl> (CDecl)) { |
Fariborz Jahanian | b33f3ad | 2009-05-01 20:07:12 +0000 | [diff] [blame] | 963 | for (ObjCInterfaceDecl::protocol_iterator PI = I->protocol_begin(), |
Chris Lattner | cddc888 | 2009-03-01 00:56:52 +0000 | [diff] [blame] | 964 | E = I->protocol_end(); PI != E; ++PI) |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 965 | CheckProtocolMethodDefs(IMPDecl->getLocation(), *PI, IncompleteImpl, |
Chris Lattner | cddc888 | 2009-03-01 00:56:52 +0000 | [diff] [blame] | 966 | InsMap, ClsMap, I); |
| 967 | // Check class extensions (unnamed categories) |
| 968 | for (ObjCCategoryDecl *Categories = I->getCategoryList(); |
| 969 | Categories; Categories = Categories->getNextClassCategory()) { |
Fariborz Jahanian | 2576061 | 2010-02-15 21:55:26 +0000 | [diff] [blame] | 970 | if (Categories->IsClassExtension()) { |
Chris Lattner | cddc888 | 2009-03-01 00:56:52 +0000 | [diff] [blame] | 971 | ImplMethodsVsClassMethods(IMPDecl, Categories, IncompleteImpl); |
| 972 | break; |
| 973 | } |
Fariborz Jahanian | 8daab97 | 2008-12-05 18:18:52 +0000 | [diff] [blame] | 974 | } |
Chris Lattner | cddc888 | 2009-03-01 00:56:52 +0000 | [diff] [blame] | 975 | } else if (ObjCCategoryDecl *C = dyn_cast<ObjCCategoryDecl>(CDecl)) { |
Fariborz Jahanian | b106fc6 | 2009-10-05 21:32:49 +0000 | [diff] [blame] | 976 | // For extended class, unimplemented methods in its protocols will |
| 977 | // be reported in the primary class. |
Fariborz Jahanian | 2576061 | 2010-02-15 21:55:26 +0000 | [diff] [blame] | 978 | if (!C->IsClassExtension()) { |
Fariborz Jahanian | b106fc6 | 2009-10-05 21:32:49 +0000 | [diff] [blame] | 979 | for (ObjCCategoryDecl::protocol_iterator PI = C->protocol_begin(), |
| 980 | E = C->protocol_end(); PI != E; ++PI) |
| 981 | CheckProtocolMethodDefs(IMPDecl->getLocation(), *PI, IncompleteImpl, |
Fariborz Jahanian | f283859 | 2010-03-27 21:10:05 +0000 | [diff] [blame] | 982 | InsMap, ClsMap, CDecl); |
Fariborz Jahanian | 3ad230e | 2010-01-20 19:36:21 +0000 | [diff] [blame] | 983 | // Report unimplemented properties in the category as well. |
| 984 | // When reporting on missing setter/getters, do not report when |
| 985 | // setter/getter is implemented in category's primary class |
| 986 | // implementation. |
| 987 | if (ObjCInterfaceDecl *ID = C->getClassInterface()) |
| 988 | if (ObjCImplDecl *IMP = ID->getImplementation()) { |
| 989 | for (ObjCImplementationDecl::instmeth_iterator |
| 990 | I = IMP->instmeth_begin(), E = IMP->instmeth_end(); I!=E; ++I) |
| 991 | InsMap.insert((*I)->getSelector()); |
| 992 | } |
| 993 | DiagnoseUnimplementedProperties(IMPDecl, CDecl, InsMap); |
| 994 | } |
Chris Lattner | cddc888 | 2009-03-01 00:56:52 +0000 | [diff] [blame] | 995 | } else |
| 996 | assert(false && "invalid ObjCContainerDecl type."); |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 997 | } |
| 998 | |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 999 | /// ActOnForwardClassDeclaration - |
Chris Lattner | b28317a | 2009-03-28 19:18:32 +0000 | [diff] [blame] | 1000 | Action::DeclPtrTy |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 1001 | Sema::ActOnForwardClassDeclaration(SourceLocation AtClassLoc, |
Chris Lattner | bdbde4d | 2009-02-16 19:25:52 +0000 | [diff] [blame] | 1002 | IdentifierInfo **IdentList, |
Ted Kremenek | c09cba6 | 2009-11-17 23:12:20 +0000 | [diff] [blame] | 1003 | SourceLocation *IdentLocs, |
Chris Lattner | bdbde4d | 2009-02-16 19:25:52 +0000 | [diff] [blame] | 1004 | unsigned NumElts) { |
Ted Kremenek | a526c5c | 2008-01-07 19:49:32 +0000 | [diff] [blame] | 1005 | llvm::SmallVector<ObjCInterfaceDecl*, 32> Interfaces; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1006 | |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 1007 | for (unsigned i = 0; i != NumElts; ++i) { |
| 1008 | // Check for another declaration kind with the same name. |
John McCall | f36e02d | 2009-10-09 21:13:30 +0000 | [diff] [blame] | 1009 | NamedDecl *PrevDecl |
Douglas Gregor | c83c687 | 2010-04-15 22:33:43 +0000 | [diff] [blame] | 1010 | = LookupSingleName(TUScope, IdentList[i], IdentLocs[i], |
Douglas Gregor | c0b3964 | 2010-04-15 23:40:53 +0000 | [diff] [blame] | 1011 | LookupOrdinaryName, ForRedeclaration); |
Douglas Gregor | f57172b | 2008-12-08 18:40:42 +0000 | [diff] [blame] | 1012 | if (PrevDecl && PrevDecl->isTemplateParameter()) { |
Douglas Gregor | 72c3f31 | 2008-12-05 18:15:24 +0000 | [diff] [blame] | 1013 | // Maybe we will complain about the shadowed template parameter. |
| 1014 | DiagnoseTemplateParameterShadow(AtClassLoc, PrevDecl); |
| 1015 | // Just pretend that we didn't see the previous declaration. |
| 1016 | PrevDecl = 0; |
| 1017 | } |
| 1018 | |
Ted Kremenek | a526c5c | 2008-01-07 19:49:32 +0000 | [diff] [blame] | 1019 | if (PrevDecl && !isa<ObjCInterfaceDecl>(PrevDecl)) { |
Steve Naroff | c733388 | 2008-06-05 22:57:10 +0000 | [diff] [blame] | 1020 | // GCC apparently allows the following idiom: |
| 1021 | // |
| 1022 | // typedef NSObject < XCElementTogglerP > XCElementToggler; |
| 1023 | // @class XCElementToggler; |
| 1024 | // |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1025 | // FIXME: Make an extension? |
Steve Naroff | c733388 | 2008-06-05 22:57:10 +0000 | [diff] [blame] | 1026 | TypedefDecl *TDD = dyn_cast<TypedefDecl>(PrevDecl); |
| 1027 | if (!TDD || !isa<ObjCInterfaceType>(TDD->getUnderlyingType())) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 1028 | Diag(AtClassLoc, diag::err_redefinition_different_kind) << IdentList[i]; |
Chris Lattner | 5f4a682 | 2008-11-23 23:12:31 +0000 | [diff] [blame] | 1029 | Diag(PrevDecl->getLocation(), diag::note_previous_definition); |
Mike Stump | ac5fc7c | 2009-08-04 21:02:39 +0000 | [diff] [blame] | 1030 | } else if (TDD) { |
| 1031 | // a forward class declaration matching a typedef name of a class refers |
| 1032 | // to the underlying class. |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1033 | if (ObjCInterfaceType * OI = |
Fariborz Jahanian | cae27c5 | 2009-05-07 21:49:26 +0000 | [diff] [blame] | 1034 | dyn_cast<ObjCInterfaceType>(TDD->getUnderlyingType())) |
| 1035 | PrevDecl = OI->getDecl(); |
| 1036 | } |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 1037 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1038 | ObjCInterfaceDecl *IDecl = dyn_cast_or_null<ObjCInterfaceDecl>(PrevDecl); |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 1039 | if (!IDecl) { // Not already seen? Make a forward decl. |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1040 | IDecl = ObjCInterfaceDecl::Create(Context, CurContext, AtClassLoc, |
Ted Kremenek | 321c22f | 2009-11-18 00:28:11 +0000 | [diff] [blame] | 1041 | IdentList[i], IdentLocs[i], true); |
Ted Kremenek | c32b1d8 | 2009-11-17 22:58:30 +0000 | [diff] [blame] | 1042 | |
| 1043 | // Push the ObjCInterfaceDecl on the scope chain but do *not* add it to |
| 1044 | // the current DeclContext. This prevents clients that walk DeclContext |
| 1045 | // from seeing the imaginary ObjCInterfaceDecl until it is actually |
| 1046 | // declared later (if at all). We also take care to explicitly make |
| 1047 | // sure this declaration is visible for name lookup. |
| 1048 | PushOnScopeChains(IDecl, TUScope, false); |
| 1049 | CurContext->makeDeclVisibleInContext(IDecl, true); |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 1050 | } |
| 1051 | |
| 1052 | Interfaces.push_back(IDecl); |
| 1053 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1054 | |
Ted Kremenek | 321c22f | 2009-11-18 00:28:11 +0000 | [diff] [blame] | 1055 | assert(Interfaces.size() == NumElts); |
Douglas Gregor | d043410 | 2009-01-09 00:49:46 +0000 | [diff] [blame] | 1056 | ObjCClassDecl *CDecl = ObjCClassDecl::Create(Context, CurContext, AtClassLoc, |
Ted Kremenek | 321c22f | 2009-11-18 00:28:11 +0000 | [diff] [blame] | 1057 | Interfaces.data(), IdentLocs, |
Anders Carlsson | 1528145 | 2008-11-04 16:57:32 +0000 | [diff] [blame] | 1058 | Interfaces.size()); |
Argyrios Kyrtzidis | 17945a0 | 2009-06-30 02:36:12 +0000 | [diff] [blame] | 1059 | CurContext->addDecl(CDecl); |
Anders Carlsson | 1528145 | 2008-11-04 16:57:32 +0000 | [diff] [blame] | 1060 | CheckObjCDeclScope(CDecl); |
Chris Lattner | b28317a | 2009-03-28 19:18:32 +0000 | [diff] [blame] | 1061 | return DeclPtrTy::make(CDecl); |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 1062 | } |
| 1063 | |
| 1064 | |
| 1065 | /// MatchTwoMethodDeclarations - Checks that two methods have matching type and |
| 1066 | /// returns true, or false, accordingly. |
| 1067 | /// TODO: Handle protocol list; such as id<p1,p2> in type comparisons |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1068 | bool Sema::MatchTwoMethodDeclarations(const ObjCMethodDecl *Method, |
Steve Naroff | fe6b0dc | 2008-10-21 10:37:50 +0000 | [diff] [blame] | 1069 | const ObjCMethodDecl *PrevMethod, |
| 1070 | bool matchBasedOnSizeAndAlignment) { |
| 1071 | QualType T1 = Context.getCanonicalType(Method->getResultType()); |
| 1072 | QualType T2 = Context.getCanonicalType(PrevMethod->getResultType()); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1073 | |
Steve Naroff | fe6b0dc | 2008-10-21 10:37:50 +0000 | [diff] [blame] | 1074 | if (T1 != T2) { |
| 1075 | // The result types are different. |
| 1076 | if (!matchBasedOnSizeAndAlignment) |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 1077 | return false; |
Steve Naroff | fe6b0dc | 2008-10-21 10:37:50 +0000 | [diff] [blame] | 1078 | // Incomplete types don't have a size and alignment. |
| 1079 | if (T1->isIncompleteType() || T2->isIncompleteType()) |
| 1080 | return false; |
| 1081 | // Check is based on size and alignment. |
| 1082 | if (Context.getTypeInfo(T1) != Context.getTypeInfo(T2)) |
| 1083 | return false; |
| 1084 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1085 | |
Chris Lattner | 89951a8 | 2009-02-20 18:43:26 +0000 | [diff] [blame] | 1086 | ObjCMethodDecl::param_iterator ParamI = Method->param_begin(), |
| 1087 | E = Method->param_end(); |
| 1088 | ObjCMethodDecl::param_iterator PrevI = PrevMethod->param_begin(); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1089 | |
Chris Lattner | 89951a8 | 2009-02-20 18:43:26 +0000 | [diff] [blame] | 1090 | for (; ParamI != E; ++ParamI, ++PrevI) { |
| 1091 | assert(PrevI != PrevMethod->param_end() && "Param mismatch"); |
| 1092 | T1 = Context.getCanonicalType((*ParamI)->getType()); |
| 1093 | T2 = Context.getCanonicalType((*PrevI)->getType()); |
Steve Naroff | fe6b0dc | 2008-10-21 10:37:50 +0000 | [diff] [blame] | 1094 | if (T1 != T2) { |
| 1095 | // The result types are different. |
| 1096 | if (!matchBasedOnSizeAndAlignment) |
| 1097 | return false; |
| 1098 | // Incomplete types don't have a size and alignment. |
| 1099 | if (T1->isIncompleteType() || T2->isIncompleteType()) |
| 1100 | return false; |
| 1101 | // Check is based on size and alignment. |
| 1102 | if (Context.getTypeInfo(T1) != Context.getTypeInfo(T2)) |
| 1103 | return false; |
| 1104 | } |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 1105 | } |
| 1106 | return true; |
| 1107 | } |
| 1108 | |
Douglas Gregor | f0aaf7a | 2009-04-24 21:10:55 +0000 | [diff] [blame] | 1109 | /// \brief Read the contents of the instance and factory method pools |
| 1110 | /// for a given selector from external storage. |
| 1111 | /// |
| 1112 | /// This routine should only be called once, when neither the instance |
| 1113 | /// nor the factory method pool has an entry for this selector. |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1114 | Sema::MethodPool::iterator Sema::ReadMethodPool(Selector Sel, |
Douglas Gregor | f0aaf7a | 2009-04-24 21:10:55 +0000 | [diff] [blame] | 1115 | bool isInstance) { |
| 1116 | assert(ExternalSource && "We need an external AST source"); |
| 1117 | assert(InstanceMethodPool.find(Sel) == InstanceMethodPool.end() && |
| 1118 | "Selector data already loaded into the instance method pool"); |
| 1119 | assert(FactoryMethodPool.find(Sel) == FactoryMethodPool.end() && |
| 1120 | "Selector data already loaded into the factory method pool"); |
| 1121 | |
| 1122 | // Read the method list from the external source. |
| 1123 | std::pair<ObjCMethodList, ObjCMethodList> Methods |
| 1124 | = ExternalSource->ReadMethodPool(Sel); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1125 | |
Douglas Gregor | f0aaf7a | 2009-04-24 21:10:55 +0000 | [diff] [blame] | 1126 | if (isInstance) { |
| 1127 | if (Methods.second.Method) |
| 1128 | FactoryMethodPool[Sel] = Methods.second; |
| 1129 | return InstanceMethodPool.insert(std::make_pair(Sel, Methods.first)).first; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1130 | } |
Douglas Gregor | f0aaf7a | 2009-04-24 21:10:55 +0000 | [diff] [blame] | 1131 | |
| 1132 | if (Methods.first.Method) |
| 1133 | InstanceMethodPool[Sel] = Methods.first; |
| 1134 | |
| 1135 | return FactoryMethodPool.insert(std::make_pair(Sel, Methods.second)).first; |
| 1136 | } |
| 1137 | |
Ted Kremenek | a526c5c | 2008-01-07 19:49:32 +0000 | [diff] [blame] | 1138 | void Sema::AddInstanceMethodToGlobalPool(ObjCMethodDecl *Method) { |
Douglas Gregor | f0aaf7a | 2009-04-24 21:10:55 +0000 | [diff] [blame] | 1139 | llvm::DenseMap<Selector, ObjCMethodList>::iterator Pos |
| 1140 | = InstanceMethodPool.find(Method->getSelector()); |
| 1141 | if (Pos == InstanceMethodPool.end()) { |
| 1142 | if (ExternalSource && !FactoryMethodPool.count(Method->getSelector())) |
| 1143 | Pos = ReadMethodPool(Method->getSelector(), /*isInstance=*/true); |
| 1144 | else |
| 1145 | Pos = InstanceMethodPool.insert(std::make_pair(Method->getSelector(), |
| 1146 | ObjCMethodList())).first; |
| 1147 | } |
| 1148 | |
| 1149 | ObjCMethodList &Entry = Pos->second; |
Chris Lattner | b25df35 | 2009-03-04 05:16:45 +0000 | [diff] [blame] | 1150 | if (Entry.Method == 0) { |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 1151 | // Haven't seen a method with this selector name yet - add it. |
Chris Lattner | b25df35 | 2009-03-04 05:16:45 +0000 | [diff] [blame] | 1152 | Entry.Method = Method; |
| 1153 | Entry.Next = 0; |
| 1154 | return; |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 1155 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1156 | |
Chris Lattner | b25df35 | 2009-03-04 05:16:45 +0000 | [diff] [blame] | 1157 | // We've seen a method with this name, see if we have already seen this type |
| 1158 | // signature. |
| 1159 | for (ObjCMethodList *List = &Entry; List; List = List->Next) |
| 1160 | if (MatchTwoMethodDeclarations(Method, List->Method)) |
| 1161 | return; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1162 | |
Chris Lattner | b25df35 | 2009-03-04 05:16:45 +0000 | [diff] [blame] | 1163 | // We have a new signature for an existing method - add it. |
| 1164 | // This is extremely rare. Only 1% of Cocoa selectors are "overloaded". |
Ted Kremenek | 298ed87 | 2010-02-11 00:53:01 +0000 | [diff] [blame] | 1165 | ObjCMethodList *Mem = BumpAlloc.Allocate<ObjCMethodList>(); |
| 1166 | Entry.Next = new (Mem) ObjCMethodList(Method, Entry.Next); |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 1167 | } |
| 1168 | |
Steve Naroff | 6f5f41c | 2008-10-21 10:50:19 +0000 | [diff] [blame] | 1169 | // FIXME: Finish implementing -Wno-strict-selector-match. |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1170 | ObjCMethodDecl *Sema::LookupInstanceMethodInGlobalPool(Selector Sel, |
Fariborz Jahanian | 835ed7f | 2009-08-22 21:13:55 +0000 | [diff] [blame] | 1171 | SourceRange R, |
| 1172 | bool warn) { |
Douglas Gregor | f0aaf7a | 2009-04-24 21:10:55 +0000 | [diff] [blame] | 1173 | llvm::DenseMap<Selector, ObjCMethodList>::iterator Pos |
| 1174 | = InstanceMethodPool.find(Sel); |
Douglas Gregor | 27a4566 | 2009-04-24 22:23:41 +0000 | [diff] [blame] | 1175 | if (Pos == InstanceMethodPool.end()) { |
| 1176 | if (ExternalSource && !FactoryMethodPool.count(Sel)) |
Douglas Gregor | f0aaf7a | 2009-04-24 21:10:55 +0000 | [diff] [blame] | 1177 | Pos = ReadMethodPool(Sel, /*isInstance=*/true); |
| 1178 | else |
| 1179 | return 0; |
| 1180 | } |
| 1181 | |
| 1182 | ObjCMethodList &MethList = Pos->second; |
Steve Naroff | fe6b0dc | 2008-10-21 10:37:50 +0000 | [diff] [blame] | 1183 | bool issueWarning = false; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1184 | |
Steve Naroff | 037cda5 | 2008-09-30 14:38:43 +0000 | [diff] [blame] | 1185 | if (MethList.Method && MethList.Next) { |
Steve Naroff | fe6b0dc | 2008-10-21 10:37:50 +0000 | [diff] [blame] | 1186 | for (ObjCMethodList *Next = MethList.Next; Next; Next = Next->Next) |
| 1187 | // This checks if the methods differ by size & alignment. |
| 1188 | if (!MatchTwoMethodDeclarations(MethList.Method, Next->Method, true)) |
Fariborz Jahanian | 835ed7f | 2009-08-22 21:13:55 +0000 | [diff] [blame] | 1189 | issueWarning = warn; |
Steve Naroff | fe6b0dc | 2008-10-21 10:37:50 +0000 | [diff] [blame] | 1190 | } |
| 1191 | if (issueWarning && (MethList.Method && MethList.Next)) { |
Chris Lattner | 077bf5e | 2008-11-24 03:33:13 +0000 | [diff] [blame] | 1192 | Diag(R.getBegin(), diag::warn_multiple_method_decl) << Sel << R; |
John McCall | 41ce66f | 2009-12-10 19:51:03 +0000 | [diff] [blame] | 1193 | Diag(MethList.Method->getLocStart(), diag::note_using) |
Chris Lattner | dcd5ef1 | 2008-11-19 05:27:50 +0000 | [diff] [blame] | 1194 | << MethList.Method->getSourceRange(); |
Steve Naroff | 037cda5 | 2008-09-30 14:38:43 +0000 | [diff] [blame] | 1195 | for (ObjCMethodList *Next = MethList.Next; Next; Next = Next->Next) |
John McCall | 41ce66f | 2009-12-10 19:51:03 +0000 | [diff] [blame] | 1196 | Diag(Next->Method->getLocStart(), diag::note_also_found) |
Chris Lattner | dcd5ef1 | 2008-11-19 05:27:50 +0000 | [diff] [blame] | 1197 | << Next->Method->getSourceRange(); |
Steve Naroff | 037cda5 | 2008-09-30 14:38:43 +0000 | [diff] [blame] | 1198 | } |
| 1199 | return MethList.Method; |
| 1200 | } |
| 1201 | |
Ted Kremenek | a526c5c | 2008-01-07 19:49:32 +0000 | [diff] [blame] | 1202 | void Sema::AddFactoryMethodToGlobalPool(ObjCMethodDecl *Method) { |
Douglas Gregor | f0aaf7a | 2009-04-24 21:10:55 +0000 | [diff] [blame] | 1203 | llvm::DenseMap<Selector, ObjCMethodList>::iterator Pos |
| 1204 | = FactoryMethodPool.find(Method->getSelector()); |
| 1205 | if (Pos == FactoryMethodPool.end()) { |
| 1206 | if (ExternalSource && !InstanceMethodPool.count(Method->getSelector())) |
| 1207 | Pos = ReadMethodPool(Method->getSelector(), /*isInstance=*/false); |
| 1208 | else |
| 1209 | Pos = FactoryMethodPool.insert(std::make_pair(Method->getSelector(), |
| 1210 | ObjCMethodList())).first; |
| 1211 | } |
| 1212 | |
| 1213 | ObjCMethodList &FirstMethod = Pos->second; |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 1214 | if (!FirstMethod.Method) { |
| 1215 | // Haven't seen a method with this selector name yet - add it. |
| 1216 | FirstMethod.Method = Method; |
| 1217 | FirstMethod.Next = 0; |
| 1218 | } else { |
| 1219 | // We've seen a method with this name, now check the type signature(s). |
| 1220 | bool match = MatchTwoMethodDeclarations(Method, FirstMethod.Method); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1221 | |
| 1222 | for (ObjCMethodList *Next = FirstMethod.Next; !match && Next; |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 1223 | Next = Next->Next) |
| 1224 | match = MatchTwoMethodDeclarations(Method, Next->Method); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1225 | |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 1226 | if (!match) { |
| 1227 | // We have a new signature for an existing method - add it. |
| 1228 | // This is extremely rare. Only 1% of Cocoa selectors are "overloaded". |
Ted Kremenek | 298ed87 | 2010-02-11 00:53:01 +0000 | [diff] [blame] | 1229 | ObjCMethodList *Mem = BumpAlloc.Allocate<ObjCMethodList>(); |
| 1230 | ObjCMethodList *OMI = new (Mem) ObjCMethodList(Method, FirstMethod.Next); |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 1231 | FirstMethod.Next = OMI; |
| 1232 | } |
| 1233 | } |
| 1234 | } |
| 1235 | |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1236 | ObjCMethodDecl *Sema::LookupFactoryMethodInGlobalPool(Selector Sel, |
Douglas Gregor | f0aaf7a | 2009-04-24 21:10:55 +0000 | [diff] [blame] | 1237 | SourceRange R) { |
| 1238 | llvm::DenseMap<Selector, ObjCMethodList>::iterator Pos |
| 1239 | = FactoryMethodPool.find(Sel); |
| 1240 | if (Pos == FactoryMethodPool.end()) { |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1241 | if (ExternalSource && !InstanceMethodPool.count(Sel)) |
Douglas Gregor | f0aaf7a | 2009-04-24 21:10:55 +0000 | [diff] [blame] | 1242 | Pos = ReadMethodPool(Sel, /*isInstance=*/false); |
| 1243 | else |
| 1244 | return 0; |
| 1245 | } |
| 1246 | |
| 1247 | ObjCMethodList &MethList = Pos->second; |
| 1248 | bool issueWarning = false; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1249 | |
Douglas Gregor | f0aaf7a | 2009-04-24 21:10:55 +0000 | [diff] [blame] | 1250 | if (MethList.Method && MethList.Next) { |
| 1251 | for (ObjCMethodList *Next = MethList.Next; Next; Next = Next->Next) |
| 1252 | // This checks if the methods differ by size & alignment. |
| 1253 | if (!MatchTwoMethodDeclarations(MethList.Method, Next->Method, true)) |
| 1254 | issueWarning = true; |
| 1255 | } |
| 1256 | if (issueWarning && (MethList.Method && MethList.Next)) { |
| 1257 | Diag(R.getBegin(), diag::warn_multiple_method_decl) << Sel << R; |
John McCall | 41ce66f | 2009-12-10 19:51:03 +0000 | [diff] [blame] | 1258 | Diag(MethList.Method->getLocStart(), diag::note_using) |
Douglas Gregor | f0aaf7a | 2009-04-24 21:10:55 +0000 | [diff] [blame] | 1259 | << MethList.Method->getSourceRange(); |
| 1260 | for (ObjCMethodList *Next = MethList.Next; Next; Next = Next->Next) |
John McCall | 41ce66f | 2009-12-10 19:51:03 +0000 | [diff] [blame] | 1261 | Diag(Next->Method->getLocStart(), diag::note_also_found) |
Douglas Gregor | f0aaf7a | 2009-04-24 21:10:55 +0000 | [diff] [blame] | 1262 | << Next->Method->getSourceRange(); |
| 1263 | } |
| 1264 | return MethList.Method; |
| 1265 | } |
| 1266 | |
Fariborz Jahanian | e198f5d | 2009-08-04 17:01:09 +0000 | [diff] [blame] | 1267 | /// CompareMethodParamsInBaseAndSuper - This routine compares methods with |
| 1268 | /// identical selector names in current and its super classes and issues |
| 1269 | /// a warning if any of their argument types are incompatible. |
Fariborz Jahanian | dbdec8b | 2009-08-04 01:07:16 +0000 | [diff] [blame] | 1270 | void Sema::CompareMethodParamsInBaseAndSuper(Decl *ClassDecl, |
| 1271 | ObjCMethodDecl *Method, |
| 1272 | bool IsInstance) { |
Fariborz Jahanian | e198f5d | 2009-08-04 17:01:09 +0000 | [diff] [blame] | 1273 | ObjCInterfaceDecl *ID = dyn_cast<ObjCInterfaceDecl>(ClassDecl); |
| 1274 | if (ID == 0) return; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1275 | |
Fariborz Jahanian | e198f5d | 2009-08-04 17:01:09 +0000 | [diff] [blame] | 1276 | while (ObjCInterfaceDecl *SD = ID->getSuperClass()) { |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1277 | ObjCMethodDecl *SuperMethodDecl = |
Fariborz Jahanian | e198f5d | 2009-08-04 17:01:09 +0000 | [diff] [blame] | 1278 | SD->lookupMethod(Method->getSelector(), IsInstance); |
| 1279 | if (SuperMethodDecl == 0) { |
Fariborz Jahanian | dbdec8b | 2009-08-04 01:07:16 +0000 | [diff] [blame] | 1280 | ID = SD; |
Fariborz Jahanian | e198f5d | 2009-08-04 17:01:09 +0000 | [diff] [blame] | 1281 | continue; |
Fariborz Jahanian | dbdec8b | 2009-08-04 01:07:16 +0000 | [diff] [blame] | 1282 | } |
Fariborz Jahanian | e198f5d | 2009-08-04 17:01:09 +0000 | [diff] [blame] | 1283 | ObjCMethodDecl::param_iterator ParamI = Method->param_begin(), |
| 1284 | E = Method->param_end(); |
| 1285 | ObjCMethodDecl::param_iterator PrevI = SuperMethodDecl->param_begin(); |
| 1286 | for (; ParamI != E; ++ParamI, ++PrevI) { |
| 1287 | // Number of parameters are the same and is guaranteed by selector match. |
| 1288 | assert(PrevI != SuperMethodDecl->param_end() && "Param mismatch"); |
| 1289 | QualType T1 = Context.getCanonicalType((*ParamI)->getType()); |
| 1290 | QualType T2 = Context.getCanonicalType((*PrevI)->getType()); |
| 1291 | // If type of arguement of method in this class does not match its |
| 1292 | // respective argument type in the super class method, issue warning; |
| 1293 | if (!Context.typesAreCompatible(T1, T2)) { |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1294 | Diag((*ParamI)->getLocation(), diag::ext_typecheck_base_super) |
Fariborz Jahanian | e198f5d | 2009-08-04 17:01:09 +0000 | [diff] [blame] | 1295 | << T1 << T2; |
| 1296 | Diag(SuperMethodDecl->getLocation(), diag::note_previous_declaration); |
| 1297 | return; |
| 1298 | } |
| 1299 | } |
| 1300 | ID = SD; |
| 1301 | } |
Fariborz Jahanian | dbdec8b | 2009-08-04 01:07:16 +0000 | [diff] [blame] | 1302 | } |
| 1303 | |
Fariborz Jahanian | f914b97 | 2010-02-23 23:41:11 +0000 | [diff] [blame] | 1304 | /// DiagnoseDuplicateIvars - |
| 1305 | /// Check for duplicate ivars in the entire class at the start of |
| 1306 | /// @implementation. This becomes necesssary because class extension can |
| 1307 | /// add ivars to a class in random order which will not be known until |
| 1308 | /// class's @implementation is seen. |
| 1309 | void Sema::DiagnoseDuplicateIvars(ObjCInterfaceDecl *ID, |
| 1310 | ObjCInterfaceDecl *SID) { |
| 1311 | for (ObjCInterfaceDecl::ivar_iterator IVI = ID->ivar_begin(), |
| 1312 | IVE = ID->ivar_end(); IVI != IVE; ++IVI) { |
| 1313 | ObjCIvarDecl* Ivar = (*IVI); |
| 1314 | if (Ivar->isInvalidDecl()) |
| 1315 | continue; |
| 1316 | if (IdentifierInfo *II = Ivar->getIdentifier()) { |
| 1317 | ObjCIvarDecl* prevIvar = SID->lookupInstanceVariable(II); |
| 1318 | if (prevIvar) { |
| 1319 | Diag(Ivar->getLocation(), diag::err_duplicate_member) << II; |
| 1320 | Diag(prevIvar->getLocation(), diag::note_previous_declaration); |
| 1321 | Ivar->setInvalidDecl(); |
| 1322 | } |
| 1323 | } |
| 1324 | } |
| 1325 | } |
| 1326 | |
Steve Naroff | a56f616 | 2007-12-18 01:30:32 +0000 | [diff] [blame] | 1327 | // Note: For class/category implemenations, allMethods/allProperties is |
| 1328 | // always null. |
Ted Kremenek | 782f2f5 | 2010-01-07 01:20:12 +0000 | [diff] [blame] | 1329 | void Sema::ActOnAtEnd(SourceRange AtEnd, |
| 1330 | DeclPtrTy classDecl, |
Chris Lattner | b28317a | 2009-03-28 19:18:32 +0000 | [diff] [blame] | 1331 | DeclPtrTy *allMethods, unsigned allNum, |
| 1332 | DeclPtrTy *allProperties, unsigned pNum, |
Chris Lattner | 682bf92 | 2009-03-29 16:50:03 +0000 | [diff] [blame] | 1333 | DeclGroupPtrTy *allTUVars, unsigned tuvNum) { |
Chris Lattner | b28317a | 2009-03-28 19:18:32 +0000 | [diff] [blame] | 1334 | Decl *ClassDecl = classDecl.getAs<Decl>(); |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 1335 | |
Steve Naroff | a56f616 | 2007-12-18 01:30:32 +0000 | [diff] [blame] | 1336 | // FIXME: If we don't have a ClassDecl, we have an error. We should consider |
| 1337 | // always passing in a decl. If the decl has an error, isInvalidDecl() |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 1338 | // should be true. |
| 1339 | if (!ClassDecl) |
| 1340 | return; |
Fariborz Jahanian | 63e963c | 2009-11-16 18:57:01 +0000 | [diff] [blame] | 1341 | |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1342 | bool isInterfaceDeclKind = |
Chris Lattner | f8d17a5 | 2008-03-16 21:17:37 +0000 | [diff] [blame] | 1343 | isa<ObjCInterfaceDecl>(ClassDecl) || isa<ObjCCategoryDecl>(ClassDecl) |
| 1344 | || isa<ObjCProtocolDecl>(ClassDecl); |
Ted Kremenek | a526c5c | 2008-01-07 19:49:32 +0000 | [diff] [blame] | 1345 | bool checkIdenticalMethods = isa<ObjCImplementationDecl>(ClassDecl); |
Steve Naroff | 09c4719 | 2009-01-09 15:36:25 +0000 | [diff] [blame] | 1346 | |
Ted Kremenek | 782f2f5 | 2010-01-07 01:20:12 +0000 | [diff] [blame] | 1347 | if (!isInterfaceDeclKind && AtEnd.isInvalid()) { |
| 1348 | // FIXME: This is wrong. We shouldn't be pretending that there is |
| 1349 | // an '@end' in the declaration. |
| 1350 | SourceLocation L = ClassDecl->getLocation(); |
| 1351 | AtEnd.setBegin(L); |
| 1352 | AtEnd.setEnd(L); |
| 1353 | Diag(L, diag::warn_missing_atend); |
Fariborz Jahanian | 63e963c | 2009-11-16 18:57:01 +0000 | [diff] [blame] | 1354 | } |
| 1355 | |
Steve Naroff | 0701bbb | 2009-01-08 17:28:14 +0000 | [diff] [blame] | 1356 | DeclContext *DC = dyn_cast<DeclContext>(ClassDecl); |
Steve Naroff | 0701bbb | 2009-01-08 17:28:14 +0000 | [diff] [blame] | 1357 | |
| 1358 | // FIXME: Remove these and use the ObjCContainerDecl/DeclContext. |
| 1359 | llvm::DenseMap<Selector, const ObjCMethodDecl*> InsMap; |
| 1360 | llvm::DenseMap<Selector, const ObjCMethodDecl*> ClsMap; |
| 1361 | |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 1362 | for (unsigned i = 0; i < allNum; i++ ) { |
Ted Kremenek | a526c5c | 2008-01-07 19:49:32 +0000 | [diff] [blame] | 1363 | ObjCMethodDecl *Method = |
Chris Lattner | b28317a | 2009-03-28 19:18:32 +0000 | [diff] [blame] | 1364 | cast_or_null<ObjCMethodDecl>(allMethods[i].getAs<Decl>()); |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 1365 | |
| 1366 | if (!Method) continue; // Already issued a diagnostic. |
Douglas Gregor | f8d49f6 | 2009-01-09 17:18:27 +0000 | [diff] [blame] | 1367 | if (Method->isInstanceMethod()) { |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 1368 | /// Check for instance method of the same name with incompatible types |
Ted Kremenek | a526c5c | 2008-01-07 19:49:32 +0000 | [diff] [blame] | 1369 | const ObjCMethodDecl *&PrevMethod = InsMap[Method->getSelector()]; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1370 | bool match = PrevMethod ? MatchTwoMethodDeclarations(Method, PrevMethod) |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 1371 | : false; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1372 | if ((isInterfaceDeclKind && PrevMethod && !match) |
Eli Friedman | 82b4e76 | 2008-12-16 20:15:50 +0000 | [diff] [blame] | 1373 | || (checkIdenticalMethods && match)) { |
Chris Lattner | 5f4a682 | 2008-11-23 23:12:31 +0000 | [diff] [blame] | 1374 | Diag(Method->getLocation(), diag::err_duplicate_method_decl) |
Chris Lattner | 077bf5e | 2008-11-24 03:33:13 +0000 | [diff] [blame] | 1375 | << Method->getDeclName(); |
Chris Lattner | 5f4a682 | 2008-11-23 23:12:31 +0000 | [diff] [blame] | 1376 | Diag(PrevMethod->getLocation(), diag::note_previous_declaration); |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 1377 | } else { |
Argyrios Kyrtzidis | 17945a0 | 2009-06-30 02:36:12 +0000 | [diff] [blame] | 1378 | DC->addDecl(Method); |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 1379 | InsMap[Method->getSelector()] = Method; |
| 1380 | /// The following allows us to typecheck messages to "id". |
| 1381 | AddInstanceMethodToGlobalPool(Method); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1382 | // verify that the instance method conforms to the same definition of |
Fariborz Jahanian | e198f5d | 2009-08-04 17:01:09 +0000 | [diff] [blame] | 1383 | // parent methods if it shadows one. |
Fariborz Jahanian | dbdec8b | 2009-08-04 01:07:16 +0000 | [diff] [blame] | 1384 | CompareMethodParamsInBaseAndSuper(ClassDecl, Method, true); |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 1385 | } |
Mike Stump | ac5fc7c | 2009-08-04 21:02:39 +0000 | [diff] [blame] | 1386 | } else { |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 1387 | /// Check for class method of the same name with incompatible types |
Ted Kremenek | a526c5c | 2008-01-07 19:49:32 +0000 | [diff] [blame] | 1388 | const ObjCMethodDecl *&PrevMethod = ClsMap[Method->getSelector()]; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1389 | bool match = PrevMethod ? MatchTwoMethodDeclarations(Method, PrevMethod) |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 1390 | : false; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1391 | if ((isInterfaceDeclKind && PrevMethod && !match) |
Eli Friedman | 82b4e76 | 2008-12-16 20:15:50 +0000 | [diff] [blame] | 1392 | || (checkIdenticalMethods && match)) { |
Chris Lattner | 5f4a682 | 2008-11-23 23:12:31 +0000 | [diff] [blame] | 1393 | Diag(Method->getLocation(), diag::err_duplicate_method_decl) |
Chris Lattner | 077bf5e | 2008-11-24 03:33:13 +0000 | [diff] [blame] | 1394 | << Method->getDeclName(); |
Chris Lattner | 5f4a682 | 2008-11-23 23:12:31 +0000 | [diff] [blame] | 1395 | Diag(PrevMethod->getLocation(), diag::note_previous_declaration); |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 1396 | } else { |
Argyrios Kyrtzidis | 17945a0 | 2009-06-30 02:36:12 +0000 | [diff] [blame] | 1397 | DC->addDecl(Method); |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 1398 | ClsMap[Method->getSelector()] = Method; |
Steve Naroff | a56f616 | 2007-12-18 01:30:32 +0000 | [diff] [blame] | 1399 | /// The following allows us to typecheck messages to "Class". |
| 1400 | AddFactoryMethodToGlobalPool(Method); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1401 | // verify that the class method conforms to the same definition of |
Fariborz Jahanian | e198f5d | 2009-08-04 17:01:09 +0000 | [diff] [blame] | 1402 | // parent methods if it shadows one. |
Fariborz Jahanian | dbdec8b | 2009-08-04 01:07:16 +0000 | [diff] [blame] | 1403 | CompareMethodParamsInBaseAndSuper(ClassDecl, Method, false); |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 1404 | } |
| 1405 | } |
| 1406 | } |
Ted Kremenek | a526c5c | 2008-01-07 19:49:32 +0000 | [diff] [blame] | 1407 | if (ObjCInterfaceDecl *I = dyn_cast<ObjCInterfaceDecl>(ClassDecl)) { |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1408 | // Compares properties declared in this class to those of its |
Fariborz Jahanian | 02edb98 | 2008-05-01 00:03:38 +0000 | [diff] [blame] | 1409 | // super class. |
Fariborz Jahanian | aebf0cb | 2008-05-02 19:17:30 +0000 | [diff] [blame] | 1410 | ComparePropertiesInBaseAndSuper(I); |
Fariborz Jahanian | 107089f | 2010-01-18 18:41:16 +0000 | [diff] [blame] | 1411 | CompareProperties(I, DeclPtrTy::make(I)); |
Steve Naroff | 09c4719 | 2009-01-09 15:36:25 +0000 | [diff] [blame] | 1412 | } else if (ObjCCategoryDecl *C = dyn_cast<ObjCCategoryDecl>(ClassDecl)) { |
Fariborz Jahanian | 77e14bd | 2008-12-06 19:59:02 +0000 | [diff] [blame] | 1413 | // Categories are used to extend the class by declaring new methods. |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1414 | // By the same token, they are also used to add new properties. No |
Fariborz Jahanian | 77e14bd | 2008-12-06 19:59:02 +0000 | [diff] [blame] | 1415 | // need to compare the added property to those in the class. |
Daniel Dunbar | b20ef3e | 2008-08-27 05:40:03 +0000 | [diff] [blame] | 1416 | |
Fariborz Jahanian | 107089f | 2010-01-18 18:41:16 +0000 | [diff] [blame] | 1417 | // Compare protocol properties with those in category |
| 1418 | CompareProperties(C, DeclPtrTy::make(C)); |
Fariborz Jahanian | 2576061 | 2010-02-15 21:55:26 +0000 | [diff] [blame] | 1419 | if (C->IsClassExtension()) |
Fariborz Jahanian | b7f95f5 | 2009-03-02 19:05:07 +0000 | [diff] [blame] | 1420 | DiagnoseClassExtensionDupMethods(C, C->getClassInterface()); |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 1421 | } |
Steve Naroff | 09c4719 | 2009-01-09 15:36:25 +0000 | [diff] [blame] | 1422 | if (ObjCContainerDecl *CDecl = dyn_cast<ObjCContainerDecl>(ClassDecl)) { |
Fariborz Jahanian | 2576061 | 2010-02-15 21:55:26 +0000 | [diff] [blame] | 1423 | if (CDecl->getIdentifier()) |
| 1424 | // ProcessPropertyDecl is responsible for diagnosing conflicts with any |
| 1425 | // user-defined setter/getter. It also synthesizes setter/getter methods |
| 1426 | // and adds them to the DeclContext and global method pools. |
| 1427 | for (ObjCContainerDecl::prop_iterator I = CDecl->prop_begin(), |
| 1428 | E = CDecl->prop_end(); |
| 1429 | I != E; ++I) |
| 1430 | ProcessPropertyDecl(*I, CDecl); |
Ted Kremenek | 782f2f5 | 2010-01-07 01:20:12 +0000 | [diff] [blame] | 1431 | CDecl->setAtEndRange(AtEnd); |
Steve Naroff | 09c4719 | 2009-01-09 15:36:25 +0000 | [diff] [blame] | 1432 | } |
| 1433 | if (ObjCImplementationDecl *IC=dyn_cast<ObjCImplementationDecl>(ClassDecl)) { |
Ted Kremenek | 782f2f5 | 2010-01-07 01:20:12 +0000 | [diff] [blame] | 1434 | IC->setAtEndRange(AtEnd); |
Fariborz Jahanian | 7ca8b06 | 2009-11-11 22:40:11 +0000 | [diff] [blame] | 1435 | if (ObjCInterfaceDecl* IDecl = IC->getClassInterface()) { |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 1436 | ImplMethodsVsClassMethods(IC, IDecl); |
Fariborz Jahanian | 7ca8b06 | 2009-11-11 22:40:11 +0000 | [diff] [blame] | 1437 | AtomicPropertySetterGetterRules(IC, IDecl); |
Fariborz Jahanian | f914b97 | 2010-02-23 23:41:11 +0000 | [diff] [blame] | 1438 | if (LangOpts.ObjCNonFragileABI2) |
| 1439 | while (IDecl->getSuperClass()) { |
| 1440 | DiagnoseDuplicateIvars(IDecl, IDecl->getSuperClass()); |
| 1441 | IDecl = IDecl->getSuperClass(); |
| 1442 | } |
Fariborz Jahanian | 7ca8b06 | 2009-11-11 22:40:11 +0000 | [diff] [blame] | 1443 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1444 | } else if (ObjCCategoryImplDecl* CatImplClass = |
Steve Naroff | 09c4719 | 2009-01-09 15:36:25 +0000 | [diff] [blame] | 1445 | dyn_cast<ObjCCategoryImplDecl>(ClassDecl)) { |
Ted Kremenek | 782f2f5 | 2010-01-07 01:20:12 +0000 | [diff] [blame] | 1446 | CatImplClass->setAtEndRange(AtEnd); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1447 | |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 1448 | // Find category interface decl and then check that all methods declared |
Daniel Dunbar | b20ef3e | 2008-08-27 05:40:03 +0000 | [diff] [blame] | 1449 | // in this interface are implemented in the category @implementation. |
Chris Lattner | 97a5887 | 2009-02-16 18:32:47 +0000 | [diff] [blame] | 1450 | if (ObjCInterfaceDecl* IDecl = CatImplClass->getClassInterface()) { |
Ted Kremenek | a526c5c | 2008-01-07 19:49:32 +0000 | [diff] [blame] | 1451 | for (ObjCCategoryDecl *Categories = IDecl->getCategoryList(); |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 1452 | Categories; Categories = Categories->getNextClassCategory()) { |
| 1453 | if (Categories->getIdentifier() == CatImplClass->getIdentifier()) { |
Chris Lattner | cddc888 | 2009-03-01 00:56:52 +0000 | [diff] [blame] | 1454 | ImplMethodsVsClassMethods(CatImplClass, Categories); |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 1455 | break; |
| 1456 | } |
| 1457 | } |
| 1458 | } |
| 1459 | } |
Chris Lattner | 682bf92 | 2009-03-29 16:50:03 +0000 | [diff] [blame] | 1460 | if (isInterfaceDeclKind) { |
| 1461 | // Reject invalid vardecls. |
| 1462 | for (unsigned i = 0; i != tuvNum; i++) { |
| 1463 | DeclGroupRef DG = allTUVars[i].getAsVal<DeclGroupRef>(); |
| 1464 | for (DeclGroupRef::iterator I = DG.begin(), E = DG.end(); I != E; ++I) |
| 1465 | if (VarDecl *VDecl = dyn_cast<VarDecl>(*I)) { |
Daniel Dunbar | 5466c7b | 2009-04-14 02:25:56 +0000 | [diff] [blame] | 1466 | if (!VDecl->hasExternalStorage()) |
Steve Naroff | 8745416 | 2009-04-13 17:58:46 +0000 | [diff] [blame] | 1467 | Diag(VDecl->getLocation(), diag::err_objc_var_decl_inclass); |
Fariborz Jahanian | b31cb7f | 2009-03-21 18:06:45 +0000 | [diff] [blame] | 1468 | } |
Chris Lattner | 682bf92 | 2009-03-29 16:50:03 +0000 | [diff] [blame] | 1469 | } |
Fariborz Jahanian | 38e24c7 | 2009-03-18 22:33:24 +0000 | [diff] [blame] | 1470 | } |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 1471 | } |
| 1472 | |
| 1473 | |
| 1474 | /// CvtQTToAstBitMask - utility routine to produce an AST bitmask for |
| 1475 | /// objective-c's type qualifier from the parser version of the same info. |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1476 | static Decl::ObjCDeclQualifier |
Ted Kremenek | a526c5c | 2008-01-07 19:49:32 +0000 | [diff] [blame] | 1477 | CvtQTToAstBitMask(ObjCDeclSpec::ObjCDeclQualifier PQTVal) { |
| 1478 | Decl::ObjCDeclQualifier ret = Decl::OBJC_TQ_None; |
| 1479 | if (PQTVal & ObjCDeclSpec::DQ_In) |
| 1480 | ret = (Decl::ObjCDeclQualifier)(ret | Decl::OBJC_TQ_In); |
| 1481 | if (PQTVal & ObjCDeclSpec::DQ_Inout) |
| 1482 | ret = (Decl::ObjCDeclQualifier)(ret | Decl::OBJC_TQ_Inout); |
| 1483 | if (PQTVal & ObjCDeclSpec::DQ_Out) |
| 1484 | ret = (Decl::ObjCDeclQualifier)(ret | Decl::OBJC_TQ_Out); |
| 1485 | if (PQTVal & ObjCDeclSpec::DQ_Bycopy) |
| 1486 | ret = (Decl::ObjCDeclQualifier)(ret | Decl::OBJC_TQ_Bycopy); |
| 1487 | if (PQTVal & ObjCDeclSpec::DQ_Byref) |
| 1488 | ret = (Decl::ObjCDeclQualifier)(ret | Decl::OBJC_TQ_Byref); |
| 1489 | if (PQTVal & ObjCDeclSpec::DQ_Oneway) |
| 1490 | ret = (Decl::ObjCDeclQualifier)(ret | Decl::OBJC_TQ_Oneway); |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 1491 | |
| 1492 | return ret; |
| 1493 | } |
| 1494 | |
Ted Kremenek | 422bae7 | 2010-04-18 04:59:38 +0000 | [diff] [blame] | 1495 | static inline |
| 1496 | bool containsInvalidMethodImplAttribute(const AttributeList *A) { |
| 1497 | // The 'ibaction' attribute is allowed on method definitions because of |
| 1498 | // how the IBAction macro is used on both method declarations and definitions. |
| 1499 | // If the method definitions contains any other attributes, return true. |
| 1500 | while (A && A->getKind() == AttributeList::AT_IBAction) |
| 1501 | A = A->getNext(); |
| 1502 | return A != NULL; |
| 1503 | } |
| 1504 | |
Chris Lattner | b28317a | 2009-03-28 19:18:32 +0000 | [diff] [blame] | 1505 | Sema::DeclPtrTy Sema::ActOnMethodDeclaration( |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 1506 | SourceLocation MethodLoc, SourceLocation EndLoc, |
Chris Lattner | b28317a | 2009-03-28 19:18:32 +0000 | [diff] [blame] | 1507 | tok::TokenKind MethodType, DeclPtrTy classDecl, |
Ted Kremenek | a526c5c | 2008-01-07 19:49:32 +0000 | [diff] [blame] | 1508 | ObjCDeclSpec &ReturnQT, TypeTy *ReturnType, |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 1509 | Selector Sel, |
| 1510 | // optional arguments. The number of types/arguments is obtained |
| 1511 | // from the Sel.getNumArgs(). |
Chris Lattner | e294d3f | 2009-04-11 18:57:04 +0000 | [diff] [blame] | 1512 | ObjCArgInfo *ArgInfo, |
Fariborz Jahanian | 4f4fd92 | 2010-04-08 00:30:06 +0000 | [diff] [blame] | 1513 | DeclaratorChunk::ParamInfo *CParamInfo, unsigned CNumArgs, // c-style args |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 1514 | AttributeList *AttrList, tok::ObjCKeywordKind MethodDeclKind, |
| 1515 | bool isVariadic) { |
Chris Lattner | b28317a | 2009-03-28 19:18:32 +0000 | [diff] [blame] | 1516 | Decl *ClassDecl = classDecl.getAs<Decl>(); |
Steve Naroff | da323ad | 2008-02-29 21:48:07 +0000 | [diff] [blame] | 1517 | |
| 1518 | // Make sure we can establish a context for the method. |
| 1519 | if (!ClassDecl) { |
| 1520 | Diag(MethodLoc, diag::error_missing_method_context); |
Douglas Gregor | 9ea9bdb | 2010-03-01 23:15:13 +0000 | [diff] [blame] | 1521 | getLabelMap().clear(); |
Chris Lattner | b28317a | 2009-03-28 19:18:32 +0000 | [diff] [blame] | 1522 | return DeclPtrTy(); |
Steve Naroff | da323ad | 2008-02-29 21:48:07 +0000 | [diff] [blame] | 1523 | } |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 1524 | QualType resultDeclType; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1525 | |
Douglas Gregor | 4bc1cb6 | 2010-03-08 14:59:44 +0000 | [diff] [blame] | 1526 | TypeSourceInfo *ResultTInfo = 0; |
Steve Naroff | ccef371 | 2009-02-20 22:59:16 +0000 | [diff] [blame] | 1527 | if (ReturnType) { |
Douglas Gregor | 4bc1cb6 | 2010-03-08 14:59:44 +0000 | [diff] [blame] | 1528 | resultDeclType = GetTypeFromParser(ReturnType, &ResultTInfo); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1529 | |
Steve Naroff | ccef371 | 2009-02-20 22:59:16 +0000 | [diff] [blame] | 1530 | // Methods cannot return interface types. All ObjC objects are |
| 1531 | // passed by reference. |
| 1532 | if (resultDeclType->isObjCInterfaceType()) { |
Chris Lattner | 2dd979f | 2009-04-11 19:08:56 +0000 | [diff] [blame] | 1533 | Diag(MethodLoc, diag::err_object_cannot_be_passed_returned_by_value) |
| 1534 | << 0 << resultDeclType; |
Chris Lattner | b28317a | 2009-03-28 19:18:32 +0000 | [diff] [blame] | 1535 | return DeclPtrTy(); |
Steve Naroff | ccef371 | 2009-02-20 22:59:16 +0000 | [diff] [blame] | 1536 | } |
| 1537 | } else // get the type for "id". |
Ted Kremenek | a526c5c | 2008-01-07 19:49:32 +0000 | [diff] [blame] | 1538 | resultDeclType = Context.getObjCIdType(); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1539 | |
| 1540 | ObjCMethodDecl* ObjCMethod = |
Chris Lattner | 6c4ae5d | 2008-03-16 00:49:28 +0000 | [diff] [blame] | 1541 | ObjCMethodDecl::Create(Context, MethodLoc, EndLoc, Sel, resultDeclType, |
Douglas Gregor | 4bc1cb6 | 2010-03-08 14:59:44 +0000 | [diff] [blame] | 1542 | ResultTInfo, |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1543 | cast<DeclContext>(ClassDecl), |
Chris Lattner | 6c4ae5d | 2008-03-16 00:49:28 +0000 | [diff] [blame] | 1544 | MethodType == tok::minus, isVariadic, |
Fariborz Jahanian | 4607034 | 2008-05-07 20:53:44 +0000 | [diff] [blame] | 1545 | false, |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1546 | MethodDeclKind == tok::objc_optional ? |
| 1547 | ObjCMethodDecl::Optional : |
Chris Lattner | 6c4ae5d | 2008-03-16 00:49:28 +0000 | [diff] [blame] | 1548 | ObjCMethodDecl::Required); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1549 | |
Chris Lattner | 0ed844b | 2008-04-04 06:12:32 +0000 | [diff] [blame] | 1550 | llvm::SmallVector<ParmVarDecl*, 16> Params; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1551 | |
Chris Lattner | 7db638d | 2009-04-11 19:42:43 +0000 | [diff] [blame] | 1552 | for (unsigned i = 0, e = Sel.getNumArgs(); i != e; ++i) { |
John McCall | 58e4677 | 2009-10-23 21:48:59 +0000 | [diff] [blame] | 1553 | QualType ArgType; |
John McCall | a93c934 | 2009-12-07 02:54:59 +0000 | [diff] [blame] | 1554 | TypeSourceInfo *DI; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1555 | |
Chris Lattner | e294d3f | 2009-04-11 18:57:04 +0000 | [diff] [blame] | 1556 | if (ArgInfo[i].Type == 0) { |
John McCall | 58e4677 | 2009-10-23 21:48:59 +0000 | [diff] [blame] | 1557 | ArgType = Context.getObjCIdType(); |
| 1558 | DI = 0; |
Chris Lattner | e294d3f | 2009-04-11 18:57:04 +0000 | [diff] [blame] | 1559 | } else { |
John McCall | 58e4677 | 2009-10-23 21:48:59 +0000 | [diff] [blame] | 1560 | ArgType = GetTypeFromParser(ArgInfo[i].Type, &DI); |
Steve Naroff | 6082c62 | 2008-12-09 19:36:17 +0000 | [diff] [blame] | 1561 | // Perform the default array/function conversions (C99 6.7.5.3p[7,8]). |
Chris Lattner | f97e8fa | 2009-04-11 19:34:56 +0000 | [diff] [blame] | 1562 | ArgType = adjustParameterType(ArgType); |
Chris Lattner | e294d3f | 2009-04-11 18:57:04 +0000 | [diff] [blame] | 1563 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1564 | |
John McCall | 58e4677 | 2009-10-23 21:48:59 +0000 | [diff] [blame] | 1565 | ParmVarDecl* Param |
| 1566 | = ParmVarDecl::Create(Context, ObjCMethod, ArgInfo[i].NameLoc, |
| 1567 | ArgInfo[i].Name, ArgType, DI, |
Douglas Gregor | 16573fa | 2010-04-19 22:54:31 +0000 | [diff] [blame] | 1568 | VarDecl::None, VarDecl::None, 0); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1569 | |
Chris Lattner | f97e8fa | 2009-04-11 19:34:56 +0000 | [diff] [blame] | 1570 | if (ArgType->isObjCInterfaceType()) { |
| 1571 | Diag(ArgInfo[i].NameLoc, |
| 1572 | diag::err_object_cannot_be_passed_returned_by_value) |
| 1573 | << 1 << ArgType; |
| 1574 | Param->setInvalidDecl(); |
| 1575 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1576 | |
Chris Lattner | 0ed844b | 2008-04-04 06:12:32 +0000 | [diff] [blame] | 1577 | Param->setObjCDeclQualifier( |
Chris Lattner | e294d3f | 2009-04-11 18:57:04 +0000 | [diff] [blame] | 1578 | CvtQTToAstBitMask(ArgInfo[i].DeclSpec.getObjCDeclQualifier())); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1579 | |
Chris Lattner | f97e8fa | 2009-04-11 19:34:56 +0000 | [diff] [blame] | 1580 | // Apply the attributes to the parameter. |
Douglas Gregor | 9cdda0c | 2009-06-17 21:51:59 +0000 | [diff] [blame] | 1581 | ProcessDeclAttributeList(TUScope, Param, ArgInfo[i].ArgAttrs); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1582 | |
Chris Lattner | 0ed844b | 2008-04-04 06:12:32 +0000 | [diff] [blame] | 1583 | Params.push_back(Param); |
| 1584 | } |
| 1585 | |
Fariborz Jahanian | 4f4fd92 | 2010-04-08 00:30:06 +0000 | [diff] [blame] | 1586 | for (unsigned i = 0, e = CNumArgs; i != e; ++i) { |
| 1587 | ParmVarDecl *Param = CParamInfo[i].Param.getAs<ParmVarDecl>(); |
| 1588 | QualType ArgType = Param->getType(); |
| 1589 | if (ArgType.isNull()) |
| 1590 | ArgType = Context.getObjCIdType(); |
| 1591 | else |
| 1592 | // Perform the default array/function conversions (C99 6.7.5.3p[7,8]). |
| 1593 | ArgType = adjustParameterType(ArgType); |
| 1594 | if (ArgType->isObjCInterfaceType()) { |
| 1595 | Diag(Param->getLocation(), |
| 1596 | diag::err_object_cannot_be_passed_returned_by_value) |
| 1597 | << 1 << ArgType; |
| 1598 | Param->setInvalidDecl(); |
| 1599 | } |
| 1600 | Param->setDeclContext(ObjCMethod); |
| 1601 | IdResolver.RemoveDecl(Param); |
| 1602 | Params.push_back(Param); |
| 1603 | } |
| 1604 | |
Fariborz Jahanian | 4ecb25f | 2010-04-09 15:40:42 +0000 | [diff] [blame] | 1605 | ObjCMethod->setMethodParams(Context, Params.data(), Params.size(), |
| 1606 | Sel.getNumArgs()); |
Ted Kremenek | a526c5c | 2008-01-07 19:49:32 +0000 | [diff] [blame] | 1607 | ObjCMethod->setObjCDeclQualifier( |
| 1608 | CvtQTToAstBitMask(ReturnQT.getObjCDeclQualifier())); |
| 1609 | const ObjCMethodDecl *PrevMethod = 0; |
Daniel Dunbar | 3568249 | 2008-09-26 04:12:28 +0000 | [diff] [blame] | 1610 | |
| 1611 | if (AttrList) |
Douglas Gregor | 9cdda0c | 2009-06-17 21:51:59 +0000 | [diff] [blame] | 1612 | ProcessDeclAttributeList(TUScope, ObjCMethod, AttrList); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1613 | |
John McCall | 54abf7d | 2009-11-04 02:18:39 +0000 | [diff] [blame] | 1614 | const ObjCMethodDecl *InterfaceMD = 0; |
| 1615 | |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1616 | // For implementations (which can be very "coarse grain"), we add the |
| 1617 | // method now. This allows the AST to implement lookup methods that work |
| 1618 | // incrementally (without waiting until we parse the @end). It also allows |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 1619 | // us to flag multiple declaration errors as they occur. |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1620 | if (ObjCImplementationDecl *ImpDecl = |
Chris Lattner | 6c4ae5d | 2008-03-16 00:49:28 +0000 | [diff] [blame] | 1621 | dyn_cast<ObjCImplementationDecl>(ClassDecl)) { |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 1622 | if (MethodType == tok::minus) { |
Argyrios Kyrtzidis | 17945a0 | 2009-06-30 02:36:12 +0000 | [diff] [blame] | 1623 | PrevMethod = ImpDecl->getInstanceMethod(Sel); |
| 1624 | ImpDecl->addInstanceMethod(ObjCMethod); |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 1625 | } else { |
Argyrios Kyrtzidis | 17945a0 | 2009-06-30 02:36:12 +0000 | [diff] [blame] | 1626 | PrevMethod = ImpDecl->getClassMethod(Sel); |
| 1627 | ImpDecl->addClassMethod(ObjCMethod); |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 1628 | } |
John McCall | 54abf7d | 2009-11-04 02:18:39 +0000 | [diff] [blame] | 1629 | InterfaceMD = ImpDecl->getClassInterface()->getMethod(Sel, |
| 1630 | MethodType == tok::minus); |
Ted Kremenek | 422bae7 | 2010-04-18 04:59:38 +0000 | [diff] [blame] | 1631 | if (containsInvalidMethodImplAttribute(AttrList)) |
Fariborz Jahanian | 5d36ac2 | 2009-05-12 21:36:23 +0000 | [diff] [blame] | 1632 | Diag(EndLoc, diag::warn_attribute_method_def); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1633 | } else if (ObjCCategoryImplDecl *CatImpDecl = |
Mike Stump | ac5fc7c | 2009-08-04 21:02:39 +0000 | [diff] [blame] | 1634 | dyn_cast<ObjCCategoryImplDecl>(ClassDecl)) { |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 1635 | if (MethodType == tok::minus) { |
Argyrios Kyrtzidis | 17945a0 | 2009-06-30 02:36:12 +0000 | [diff] [blame] | 1636 | PrevMethod = CatImpDecl->getInstanceMethod(Sel); |
| 1637 | CatImpDecl->addInstanceMethod(ObjCMethod); |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 1638 | } else { |
Argyrios Kyrtzidis | 17945a0 | 2009-06-30 02:36:12 +0000 | [diff] [blame] | 1639 | PrevMethod = CatImpDecl->getClassMethod(Sel); |
| 1640 | CatImpDecl->addClassMethod(ObjCMethod); |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 1641 | } |
Ted Kremenek | 422bae7 | 2010-04-18 04:59:38 +0000 | [diff] [blame] | 1642 | if (containsInvalidMethodImplAttribute(AttrList)) |
Fariborz Jahanian | 5d36ac2 | 2009-05-12 21:36:23 +0000 | [diff] [blame] | 1643 | Diag(EndLoc, diag::warn_attribute_method_def); |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 1644 | } |
| 1645 | if (PrevMethod) { |
| 1646 | // You can never have two method definitions with the same name. |
Chris Lattner | 5f4a682 | 2008-11-23 23:12:31 +0000 | [diff] [blame] | 1647 | Diag(ObjCMethod->getLocation(), diag::err_duplicate_method_decl) |
Chris Lattner | 077bf5e | 2008-11-24 03:33:13 +0000 | [diff] [blame] | 1648 | << ObjCMethod->getDeclName(); |
Chris Lattner | 5f4a682 | 2008-11-23 23:12:31 +0000 | [diff] [blame] | 1649 | Diag(PrevMethod->getLocation(), diag::note_previous_declaration); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1650 | } |
John McCall | 54abf7d | 2009-11-04 02:18:39 +0000 | [diff] [blame] | 1651 | |
| 1652 | // If the interface declared this method, and it was deprecated there, |
| 1653 | // mark it deprecated here. |
| 1654 | if (InterfaceMD && InterfaceMD->hasAttr<DeprecatedAttr>()) |
| 1655 | ObjCMethod->addAttr(::new (Context) DeprecatedAttr()); |
| 1656 | |
Chris Lattner | b28317a | 2009-03-28 19:18:32 +0000 | [diff] [blame] | 1657 | return DeclPtrTy::make(ObjCMethod); |
Chris Lattner | 4d39148 | 2007-12-12 07:09:47 +0000 | [diff] [blame] | 1658 | } |
| 1659 | |
Chris Lattner | cc98eac | 2008-12-17 07:13:27 +0000 | [diff] [blame] | 1660 | bool Sema::CheckObjCDeclScope(Decl *D) { |
Douglas Gregor | ce35607 | 2009-01-06 23:51:29 +0000 | [diff] [blame] | 1661 | if (isa<TranslationUnitDecl>(CurContext->getLookupContext())) |
Anders Carlsson | 1528145 | 2008-11-04 16:57:32 +0000 | [diff] [blame] | 1662 | return false; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1663 | |
Anders Carlsson | 1528145 | 2008-11-04 16:57:32 +0000 | [diff] [blame] | 1664 | Diag(D->getLocation(), diag::err_objc_decls_may_only_appear_in_global_scope); |
| 1665 | D->setInvalidDecl(); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1666 | |
Anders Carlsson | 1528145 | 2008-11-04 16:57:32 +0000 | [diff] [blame] | 1667 | return true; |
| 1668 | } |
Chris Lattner | cc98eac | 2008-12-17 07:13:27 +0000 | [diff] [blame] | 1669 | |
Chris Lattner | cc98eac | 2008-12-17 07:13:27 +0000 | [diff] [blame] | 1670 | /// Called whenever @defs(ClassName) is encountered in the source. Inserts the |
| 1671 | /// instance variables of ClassName into Decls. |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1672 | void Sema::ActOnDefs(Scope *S, DeclPtrTy TagD, SourceLocation DeclStart, |
Chris Lattner | cc98eac | 2008-12-17 07:13:27 +0000 | [diff] [blame] | 1673 | IdentifierInfo *ClassName, |
Chris Lattner | b28317a | 2009-03-28 19:18:32 +0000 | [diff] [blame] | 1674 | llvm::SmallVectorImpl<DeclPtrTy> &Decls) { |
Chris Lattner | cc98eac | 2008-12-17 07:13:27 +0000 | [diff] [blame] | 1675 | // Check that ClassName is a valid class |
Douglas Gregor | c83c687 | 2010-04-15 22:33:43 +0000 | [diff] [blame] | 1676 | ObjCInterfaceDecl *Class = getObjCInterfaceDecl(ClassName, DeclStart); |
Chris Lattner | cc98eac | 2008-12-17 07:13:27 +0000 | [diff] [blame] | 1677 | if (!Class) { |
| 1678 | Diag(DeclStart, diag::err_undef_interface) << ClassName; |
| 1679 | return; |
| 1680 | } |
Fariborz Jahanian | 0468fb9 | 2009-04-21 20:28:41 +0000 | [diff] [blame] | 1681 | if (LangOpts.ObjCNonFragileABI) { |
| 1682 | Diag(DeclStart, diag::err_atdef_nonfragile_interface); |
| 1683 | return; |
| 1684 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1685 | |
Chris Lattner | cc98eac | 2008-12-17 07:13:27 +0000 | [diff] [blame] | 1686 | // Collect the instance variables |
Fariborz Jahanian | 4183335 | 2009-06-04 17:08:55 +0000 | [diff] [blame] | 1687 | llvm::SmallVector<FieldDecl*, 32> RecFields; |
| 1688 | Context.CollectObjCIvars(Class, RecFields); |
| 1689 | // For each ivar, create a fresh ObjCAtDefsFieldDecl. |
| 1690 | for (unsigned i = 0; i < RecFields.size(); i++) { |
| 1691 | FieldDecl* ID = RecFields[i]; |
| 1692 | RecordDecl *Record = dyn_cast<RecordDecl>(TagD.getAs<Decl>()); |
| 1693 | Decl *FD = ObjCAtDefsFieldDecl::Create(Context, Record, ID->getLocation(), |
| 1694 | ID->getIdentifier(), ID->getType(), |
| 1695 | ID->getBitWidth()); |
| 1696 | Decls.push_back(Sema::DeclPtrTy::make(FD)); |
| 1697 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1698 | |
Chris Lattner | cc98eac | 2008-12-17 07:13:27 +0000 | [diff] [blame] | 1699 | // Introduce all of these fields into the appropriate scope. |
Chris Lattner | b28317a | 2009-03-28 19:18:32 +0000 | [diff] [blame] | 1700 | for (llvm::SmallVectorImpl<DeclPtrTy>::iterator D = Decls.begin(); |
Chris Lattner | cc98eac | 2008-12-17 07:13:27 +0000 | [diff] [blame] | 1701 | D != Decls.end(); ++D) { |
Chris Lattner | b28317a | 2009-03-28 19:18:32 +0000 | [diff] [blame] | 1702 | FieldDecl *FD = cast<FieldDecl>(D->getAs<Decl>()); |
Chris Lattner | cc98eac | 2008-12-17 07:13:27 +0000 | [diff] [blame] | 1703 | if (getLangOptions().CPlusPlus) |
| 1704 | PushOnScopeChains(cast<FieldDecl>(FD), S); |
Chris Lattner | b28317a | 2009-03-28 19:18:32 +0000 | [diff] [blame] | 1705 | else if (RecordDecl *Record = dyn_cast<RecordDecl>(TagD.getAs<Decl>())) |
Argyrios Kyrtzidis | 17945a0 | 2009-06-30 02:36:12 +0000 | [diff] [blame] | 1706 | Record->addDecl(FD); |
Chris Lattner | cc98eac | 2008-12-17 07:13:27 +0000 | [diff] [blame] | 1707 | } |
| 1708 | } |
| 1709 | |
Douglas Gregor | 160b563 | 2010-04-26 17:32:49 +0000 | [diff] [blame^] | 1710 | /// \brief Build a type-check a new Objective-C exception variable declaration. |
| 1711 | VarDecl *Sema::BuildObjCExceptionDecl(TypeSourceInfo *TInfo, |
| 1712 | QualType T, |
| 1713 | IdentifierInfo *Name, |
| 1714 | SourceLocation NameLoc, |
| 1715 | bool Invalid) { |
| 1716 | // ISO/IEC TR 18037 S6.7.3: "The type of an object with automatic storage |
| 1717 | // duration shall not be qualified by an address-space qualifier." |
| 1718 | // Since all parameters have automatic store duration, they can not have |
| 1719 | // an address space. |
| 1720 | if (T.getAddressSpace() != 0) { |
| 1721 | Diag(NameLoc, diag::err_arg_with_address_space); |
| 1722 | Invalid = true; |
| 1723 | } |
| 1724 | |
| 1725 | // An @catch parameter must be an unqualified object pointer type; |
| 1726 | // FIXME: Recover from "NSObject foo" by inserting the * in "NSObject *foo"? |
| 1727 | if (Invalid) { |
| 1728 | // Don't do any further checking. |
| 1729 | } else if (!T->isObjCObjectPointerType()) { |
| 1730 | Invalid = true; |
| 1731 | Diag(NameLoc ,diag::err_catch_param_not_objc_type); |
| 1732 | } else if (T->isObjCQualifiedIdType()) { |
| 1733 | Invalid = true; |
| 1734 | Diag(NameLoc, diag::err_illegal_qualifiers_on_catch_parm); |
| 1735 | } |
| 1736 | |
| 1737 | VarDecl *New = VarDecl::Create(Context, CurContext, NameLoc, Name, T, TInfo, |
| 1738 | VarDecl::None, VarDecl::None); |
| 1739 | if (Invalid) |
| 1740 | New->setInvalidDecl(); |
| 1741 | return New; |
| 1742 | } |
| 1743 | |
Douglas Gregor | 4e6c0d1 | 2010-04-23 23:01:43 +0000 | [diff] [blame] | 1744 | Sema::DeclPtrTy Sema::ActOnObjCExceptionDecl(Scope *S, Declarator &D) { |
Douglas Gregor | 160b563 | 2010-04-26 17:32:49 +0000 | [diff] [blame^] | 1745 | const DeclSpec &DS = D.getDeclSpec(); |
| 1746 | |
| 1747 | // We allow the "register" storage class on exception variables because |
| 1748 | // GCC did, but we drop it completely. Any other storage class is an error. |
| 1749 | if (DS.getStorageClassSpec() == DeclSpec::SCS_register) { |
| 1750 | Diag(DS.getStorageClassSpecLoc(), diag::warn_register_objc_catch_parm) |
| 1751 | << FixItHint::CreateRemoval(SourceRange(DS.getStorageClassSpecLoc())); |
| 1752 | } else if (DS.getStorageClassSpec() != DeclSpec::SCS_unspecified) { |
| 1753 | Diag(DS.getStorageClassSpecLoc(), diag::err_storage_spec_on_catch_parm) |
| 1754 | << DS.getStorageClassSpec(); |
| 1755 | } |
| 1756 | if (D.getDeclSpec().isThreadSpecified()) |
| 1757 | Diag(D.getDeclSpec().getThreadSpecLoc(), diag::err_invalid_thread); |
| 1758 | D.getMutableDeclSpec().ClearStorageClassSpecs(); |
| 1759 | |
| 1760 | DiagnoseFunctionSpecifiers(D); |
| 1761 | |
| 1762 | // Check that there are no default arguments inside the type of this |
| 1763 | // exception object (C++ only). |
| 1764 | if (getLangOptions().CPlusPlus) |
| 1765 | CheckExtraCXXDefaultArguments(D); |
| 1766 | |
| 1767 | TypeSourceInfo *TInfo = 0; |
| 1768 | TagDecl *OwnedDecl = 0; |
| 1769 | QualType ExceptionType = GetTypeForDeclarator(D, S, &TInfo, &OwnedDecl); |
| 1770 | |
| 1771 | if (getLangOptions().CPlusPlus && OwnedDecl && OwnedDecl->isDefinition()) { |
| 1772 | // Objective-C++: Types shall not be defined in exception types. |
| 1773 | Diag(OwnedDecl->getLocation(), diag::err_type_defined_in_param_type) |
| 1774 | << Context.getTypeDeclType(OwnedDecl); |
| 1775 | } |
| 1776 | |
| 1777 | VarDecl *New = BuildObjCExceptionDecl(TInfo, ExceptionType, D.getIdentifier(), |
| 1778 | D.getIdentifierLoc(), |
| 1779 | D.isInvalidType()); |
| 1780 | |
| 1781 | // Parameter declarators cannot be qualified (C++ [dcl.meaning]p1). |
| 1782 | if (D.getCXXScopeSpec().isSet()) { |
| 1783 | Diag(D.getIdentifierLoc(), diag::err_qualified_objc_catch_parm) |
| 1784 | << D.getCXXScopeSpec().getRange(); |
| 1785 | New->setInvalidDecl(); |
| 1786 | } |
| 1787 | |
| 1788 | // Add the parameter declaration into this scope. |
| 1789 | S->AddDecl(DeclPtrTy::make(New)); |
| 1790 | if (D.getIdentifier()) |
| 1791 | IdResolver.AddDecl(New); |
| 1792 | |
| 1793 | ProcessDeclAttributes(S, New, D); |
| 1794 | |
| 1795 | if (New->hasAttr<BlocksAttr>()) |
| 1796 | Diag(New->getLocation(), diag::err_block_on_nonlocal); |
| 1797 | return DeclPtrTy::make(New); |
Douglas Gregor | 4e6c0d1 | 2010-04-23 23:01:43 +0000 | [diff] [blame] | 1798 | } |