blob: 7bdfd9e014dd979be9c28f77a506ec41fd1ef4f4 [file] [log] [blame]
Chris Lattner855e51f2007-12-12 07:09:47 +00001//===--- SemaDeclObjC.cpp - Semantic Analysis for ObjC Declarations -------===//
2//
3// The LLVM Compiler Infrastructure
4//
Chris Lattner959e5be2007-12-29 19:59:25 +00005// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
Chris Lattner855e51f2007-12-12 07:09:47 +00007//
8//===----------------------------------------------------------------------===//
9//
10// This file implements semantic analysis for Objective C declarations.
11//
12//===----------------------------------------------------------------------===//
13
14#include "Sema.h"
15#include "clang/AST/ASTContext.h"
16#include "clang/AST/DeclObjC.h"
17#include "clang/Parse/Scope.h"
18
19using namespace clang;
20
Ted Kremenek42730c52008-01-07 19:49:32 +000021/// ObjCActOnStartOfMethodDef - This routine sets up parameters; invisible
Chris Lattner855e51f2007-12-12 07:09:47 +000022/// and user declared, in the method definition's AST.
Ted Kremenek42730c52008-01-07 19:49:32 +000023void Sema::ObjCActOnStartOfMethodDef(Scope *FnBodyScope, DeclTy *D) {
Chris Lattner855e51f2007-12-12 07:09:47 +000024 assert(CurFunctionDecl == 0 && "Method parsing confused");
Ted Kremenek42730c52008-01-07 19:49:32 +000025 ObjCMethodDecl *MDecl = dyn_cast<ObjCMethodDecl>(static_cast<Decl *>(D));
Chris Lattner855e51f2007-12-12 07:09:47 +000026 assert(MDecl != 0 && "Not a method declarator!");
Steve Narofffe9eb6a2007-12-18 01:30:32 +000027
28 // Allow the rest of sema to find private method decl implementations.
29 if (MDecl->isInstance())
30 AddInstanceMethodToGlobalPool(MDecl);
31 else
32 AddFactoryMethodToGlobalPool(MDecl);
Chris Lattner855e51f2007-12-12 07:09:47 +000033
34 // Allow all of Sema to see that we are entering a method definition.
35 CurMethodDecl = MDecl;
36
37 // Create Decl objects for each parameter, entrring them in the scope for
38 // binding to their use.
39 struct DeclaratorChunk::ParamInfo PI;
40
41 // Insert the invisible arguments, self and _cmd!
42 PI.Ident = &Context.Idents.get("self");
43 PI.IdentLoc = SourceLocation(); // synthesized vars have a null location.
44 PI.InvalidType = false;
Nate Begeman9f3c4bb2008-02-17 21:20:31 +000045 PI.AttrList = 0;
Gabor Greif9b2e0f92008-02-29 20:35:55 +000046 PI.TypeInfo = Context.getObjCIdType().getAsOpaquePtr();
47
Chris Lattner855e51f2007-12-12 07:09:47 +000048 if (MDecl->isInstance()) {
Gabor Greif9b2e0f92008-02-29 20:35:55 +000049 if (ObjCInterfaceDecl *OID = MDecl->getClassInterface()) {
50 // There may be no interface context due to error in declaration of the
51 // interface (which has been reported). Recover gracefully
Fariborz Jahanian6833b3b2008-01-10 20:33:58 +000052 QualType selfTy = Context.getObjCInterfaceType(OID);
53 selfTy = Context.getPointerType(selfTy);
54 PI.TypeInfo = selfTy.getAsOpaquePtr();
55 }
Gabor Greif9b2e0f92008-02-29 20:35:55 +000056 }
57
Chris Lattner855e51f2007-12-12 07:09:47 +000058 CurMethodDecl->setSelfDecl(ActOnParamDeclarator(PI, FnBodyScope));
59
60 PI.Ident = &Context.Idents.get("_cmd");
Ted Kremenek42730c52008-01-07 19:49:32 +000061 PI.TypeInfo = Context.getObjCSelType().getAsOpaquePtr();
Chris Lattner855e51f2007-12-12 07:09:47 +000062 ActOnParamDeclarator(PI, FnBodyScope);
63
Chris Lattner685d7922008-03-16 01:07:14 +000064 for (unsigned i = 0, e = MDecl->getNumParams(); i != e; ++i) {
Chris Lattner855e51f2007-12-12 07:09:47 +000065 ParmVarDecl *PDecl = MDecl->getParamDecl(i);
66 PI.Ident = PDecl->getIdentifier();
67 PI.IdentLoc = PDecl->getLocation(); // user vars have a real location.
68 PI.TypeInfo = PDecl->getType().getAsOpaquePtr();
Fariborz Jahanian00a313b2008-01-21 22:59:53 +000069 MDecl->setParamDecl(i, ActOnParamDeclarator(PI, FnBodyScope));
Chris Lattner855e51f2007-12-12 07:09:47 +000070 }
71}
72
73Sema::DeclTy *Sema::ActOnStartClassInterface(
74 SourceLocation AtInterfaceLoc,
75 IdentifierInfo *ClassName, SourceLocation ClassLoc,
76 IdentifierInfo *SuperName, SourceLocation SuperLoc,
77 IdentifierInfo **ProtocolNames, unsigned NumProtocols,
78 SourceLocation EndProtoLoc, AttributeList *AttrList) {
79 assert(ClassName && "Missing class identifier");
80
81 // Check for another declaration kind with the same name.
82 ScopedDecl *PrevDecl = LookupInterfaceDecl(ClassName);
Ted Kremenek42730c52008-01-07 19:49:32 +000083 if (PrevDecl && !isa<ObjCInterfaceDecl>(PrevDecl)) {
Chris Lattner855e51f2007-12-12 07:09:47 +000084 Diag(ClassLoc, diag::err_redefinition_different_kind,
85 ClassName->getName());
86 Diag(PrevDecl->getLocation(), diag::err_previous_definition);
87 }
88
Ted Kremenek42730c52008-01-07 19:49:32 +000089 ObjCInterfaceDecl* IDecl = dyn_cast_or_null<ObjCInterfaceDecl>(PrevDecl);
Chris Lattner855e51f2007-12-12 07:09:47 +000090 if (IDecl) {
91 // Class already seen. Is it a forward declaration?
92 if (!IDecl->isForwardDecl())
93 Diag(AtInterfaceLoc, diag::err_duplicate_class_def, IDecl->getName());
94 else {
95 IDecl->setLocation(AtInterfaceLoc);
96 IDecl->setForwardDecl(false);
97 IDecl->AllocIntfRefProtocols(NumProtocols);
98 }
99 }
100 else {
Chris Lattner0db541b2008-03-16 01:15:50 +0000101 IDecl = ObjCInterfaceDecl::Create(Context, AtInterfaceLoc, NumProtocols,
102 ClassName);
Chris Lattner855e51f2007-12-12 07:09:47 +0000103
104 // Chain & install the interface decl into the identifier.
105 IDecl->setNext(ClassName->getFETokenInfo<ScopedDecl>());
106 ClassName->setFETokenInfo(IDecl);
107
108 // Remember that this needs to be removed when the scope is popped.
109 TUScope->AddDecl(IDecl);
110 }
111
112 if (SuperName) {
Ted Kremenek42730c52008-01-07 19:49:32 +0000113 ObjCInterfaceDecl* SuperClassEntry = 0;
Chris Lattner855e51f2007-12-12 07:09:47 +0000114 // Check if a different kind of symbol declared in this scope.
115 PrevDecl = LookupInterfaceDecl(SuperName);
Ted Kremenek42730c52008-01-07 19:49:32 +0000116 if (PrevDecl && !isa<ObjCInterfaceDecl>(PrevDecl)) {
Chris Lattner855e51f2007-12-12 07:09:47 +0000117 Diag(SuperLoc, diag::err_redefinition_different_kind,
118 SuperName->getName());
119 Diag(PrevDecl->getLocation(), diag::err_previous_definition);
120 }
121 else {
122 // Check that super class is previously defined
Ted Kremenek42730c52008-01-07 19:49:32 +0000123 SuperClassEntry = dyn_cast_or_null<ObjCInterfaceDecl>(PrevDecl);
Chris Lattner855e51f2007-12-12 07:09:47 +0000124
125 if (!SuperClassEntry || SuperClassEntry->isForwardDecl()) {
126 Diag(AtInterfaceLoc, diag::err_undef_superclass,
127 SuperClassEntry ? SuperClassEntry->getName()
128 : SuperName->getName(),
129 ClassName->getName());
130 }
131 }
132 IDecl->setSuperClass(SuperClassEntry);
133 IDecl->setLocEnd(SuperLoc);
134 } else { // we have a root class.
135 IDecl->setLocEnd(ClassLoc);
136 }
137
138 /// Check then save referenced protocols
139 if (NumProtocols) {
140 for (unsigned int i = 0; i != NumProtocols; i++) {
Ted Kremenek42730c52008-01-07 19:49:32 +0000141 ObjCProtocolDecl* RefPDecl = ObjCProtocols[ProtocolNames[i]];
Chris Lattner855e51f2007-12-12 07:09:47 +0000142 if (!RefPDecl || RefPDecl->isForwardDecl())
143 Diag(ClassLoc, diag::warn_undef_protocolref,
144 ProtocolNames[i]->getName(),
145 ClassName->getName());
Fariborz Jahanian87829072007-12-20 19:24:10 +0000146 IDecl->setIntfRefProtocols(i, RefPDecl);
Chris Lattner855e51f2007-12-12 07:09:47 +0000147 }
148 IDecl->setLocEnd(EndProtoLoc);
149 }
150 return IDecl;
151}
152
153/// ActOnCompatiblityAlias - this action is called after complete parsing of
154/// @compaatibility_alias declaration. It sets up the alias relationships.
155Sema::DeclTy *Sema::ActOnCompatiblityAlias(
156 SourceLocation AtCompatibilityAliasLoc,
157 IdentifierInfo *AliasName, SourceLocation AliasLocation,
158 IdentifierInfo *ClassName, SourceLocation ClassLocation) {
159 // Look for previous declaration of alias name
160 ScopedDecl *ADecl = LookupScopedDecl(AliasName, Decl::IDNS_Ordinary,
161 AliasLocation, TUScope);
162 if (ADecl) {
Ted Kremenek42730c52008-01-07 19:49:32 +0000163 if (isa<ObjCCompatibleAliasDecl>(ADecl)) {
Chris Lattner855e51f2007-12-12 07:09:47 +0000164 Diag(AliasLocation, diag::warn_previous_alias_decl);
165 Diag(ADecl->getLocation(), diag::warn_previous_declaration);
166 }
167 else {
168 Diag(AliasLocation, diag::err_conflicting_aliasing_type,
169 AliasName->getName());
170 Diag(ADecl->getLocation(), diag::err_previous_declaration);
171 }
172 return 0;
173 }
174 // Check for class declaration
175 ScopedDecl *CDecl = LookupScopedDecl(ClassName, Decl::IDNS_Ordinary,
176 ClassLocation, TUScope);
Ted Kremenek42730c52008-01-07 19:49:32 +0000177 if (!CDecl || !isa<ObjCInterfaceDecl>(CDecl)) {
Chris Lattner855e51f2007-12-12 07:09:47 +0000178 Diag(ClassLocation, diag::warn_undef_interface,
179 ClassName->getName());
180 if (CDecl)
181 Diag(CDecl->getLocation(), diag::warn_previous_declaration);
182 return 0;
183 }
184 // Everything checked out, instantiate a new alias declaration ast
Ted Kremenek42730c52008-01-07 19:49:32 +0000185 ObjCCompatibleAliasDecl *AliasDecl =
186 new ObjCCompatibleAliasDecl(AtCompatibilityAliasLoc,
Chris Lattner855e51f2007-12-12 07:09:47 +0000187 AliasName,
Ted Kremenek42730c52008-01-07 19:49:32 +0000188 dyn_cast<ObjCInterfaceDecl>(CDecl));
Chris Lattner855e51f2007-12-12 07:09:47 +0000189
190 // Chain & install the interface decl into the identifier.
191 AliasDecl->setNext(AliasName->getFETokenInfo<ScopedDecl>());
192 AliasName->setFETokenInfo(AliasDecl);
193 return AliasDecl;
194}
195
196Sema::DeclTy *Sema::ActOnStartProtocolInterface(
197 SourceLocation AtProtoInterfaceLoc,
198 IdentifierInfo *ProtocolName, SourceLocation ProtocolLoc,
199 IdentifierInfo **ProtoRefNames, unsigned NumProtoRefs,
200 SourceLocation EndProtoLoc) {
201 assert(ProtocolName && "Missing protocol identifier");
Ted Kremenek42730c52008-01-07 19:49:32 +0000202 ObjCProtocolDecl *PDecl = ObjCProtocols[ProtocolName];
Chris Lattner855e51f2007-12-12 07:09:47 +0000203 if (PDecl) {
204 // Protocol already seen. Better be a forward protocol declaration
Chris Lattnerc1881852008-03-16 01:25:17 +0000205 if (!PDecl->isForwardDecl()) {
Chris Lattner855e51f2007-12-12 07:09:47 +0000206 Diag(ProtocolLoc, diag::err_duplicate_protocol_def,
207 ProtocolName->getName());
Chris Lattnerc1881852008-03-16 01:25:17 +0000208 // Just return the protocol we already had.
209 // FIXME: don't leak the objects passed in!
210 return PDecl;
Chris Lattner855e51f2007-12-12 07:09:47 +0000211 }
Chris Lattnerc1881852008-03-16 01:25:17 +0000212
213 PDecl->setForwardDecl(false);
214 PDecl->AllocReferencedProtocols(NumProtoRefs);
215 } else {
Chris Lattner180f7e22008-03-16 01:23:04 +0000216 PDecl = ObjCProtocolDecl::Create(Context, AtProtoInterfaceLoc, NumProtoRefs,
Chris Lattner7afba9c2008-03-16 20:19:15 +0000217 ProtocolName);
218 PDecl->setForwardDecl(false);
Ted Kremenek42730c52008-01-07 19:49:32 +0000219 ObjCProtocols[ProtocolName] = PDecl;
Chris Lattner180f7e22008-03-16 01:23:04 +0000220 }
Chris Lattner855e51f2007-12-12 07:09:47 +0000221
222 if (NumProtoRefs) {
Chris Lattner7afba9c2008-03-16 20:19:15 +0000223 /// Check then save referenced protocols.
Chris Lattner855e51f2007-12-12 07:09:47 +0000224 for (unsigned int i = 0; i != NumProtoRefs; i++) {
Ted Kremenek42730c52008-01-07 19:49:32 +0000225 ObjCProtocolDecl* RefPDecl = ObjCProtocols[ProtoRefNames[i]];
Chris Lattner855e51f2007-12-12 07:09:47 +0000226 if (!RefPDecl || RefPDecl->isForwardDecl())
227 Diag(ProtocolLoc, diag::warn_undef_protocolref,
228 ProtoRefNames[i]->getName(),
229 ProtocolName->getName());
Fariborz Jahanian87829072007-12-20 19:24:10 +0000230 PDecl->setReferencedProtocols(i, RefPDecl);
Chris Lattner855e51f2007-12-12 07:09:47 +0000231 }
232 PDecl->setLocEnd(EndProtoLoc);
233 }
234 return PDecl;
235}
236
237/// FindProtocolDeclaration - This routine looks up protocols and
238/// issuer error if they are not declared. It returns list of protocol
239/// declarations in its 'Protocols' argument.
240void
241Sema::FindProtocolDeclaration(SourceLocation TypeLoc,
242 IdentifierInfo **ProtocolId,
243 unsigned NumProtocols,
244 llvm::SmallVector<DeclTy *,8> &Protocols) {
245 for (unsigned i = 0; i != NumProtocols; ++i) {
Ted Kremenek42730c52008-01-07 19:49:32 +0000246 ObjCProtocolDecl *PDecl = ObjCProtocols[ProtocolId[i]];
Chris Lattner855e51f2007-12-12 07:09:47 +0000247 if (!PDecl)
248 Diag(TypeLoc, diag::err_undeclared_protocol,
249 ProtocolId[i]->getName());
250 else
251 Protocols.push_back(PDecl);
252 }
253}
254
255/// ActOnForwardProtocolDeclaration -
256Action::DeclTy *
257Sema::ActOnForwardProtocolDeclaration(SourceLocation AtProtocolLoc,
258 IdentifierInfo **IdentList, unsigned NumElts) {
Ted Kremenek42730c52008-01-07 19:49:32 +0000259 llvm::SmallVector<ObjCProtocolDecl*, 32> Protocols;
Chris Lattner855e51f2007-12-12 07:09:47 +0000260
261 for (unsigned i = 0; i != NumElts; ++i) {
Chris Lattner7afba9c2008-03-16 20:19:15 +0000262 IdentifierInfo *Ident = IdentList[i];
263 ObjCProtocolDecl *&PDecl = ObjCProtocols[Ident];
264 if (PDecl == 0) { // Not already seen?
Chris Lattner855e51f2007-12-12 07:09:47 +0000265 // FIXME: Pass in the location of the identifier!
Chris Lattner7afba9c2008-03-16 20:19:15 +0000266 PDecl = ObjCProtocolDecl::Create(Context, AtProtocolLoc, 0, Ident);
Chris Lattner855e51f2007-12-12 07:09:47 +0000267 }
268
269 Protocols.push_back(PDecl);
270 }
Chris Lattnere29dc832008-03-16 20:34:23 +0000271 return ObjCForwardProtocolDecl::Create(Context, AtProtocolLoc,
272 &Protocols[0], Protocols.size());
Chris Lattner855e51f2007-12-12 07:09:47 +0000273}
274
275Sema::DeclTy *Sema::ActOnStartCategoryInterface(
276 SourceLocation AtInterfaceLoc,
277 IdentifierInfo *ClassName, SourceLocation ClassLoc,
278 IdentifierInfo *CategoryName, SourceLocation CategoryLoc,
279 IdentifierInfo **ProtoRefNames, unsigned NumProtoRefs,
280 SourceLocation EndProtoLoc) {
Ted Kremenek42730c52008-01-07 19:49:32 +0000281 ObjCInterfaceDecl *IDecl = getObjCInterfaceDecl(ClassName);
Chris Lattner855e51f2007-12-12 07:09:47 +0000282
Chris Lattnere29dc832008-03-16 20:34:23 +0000283 ObjCCategoryDecl *CDecl =
284 ObjCCategoryDecl::Create(Context, AtInterfaceLoc, NumProtoRefs,
285 CategoryName);
Chris Lattner855e51f2007-12-12 07:09:47 +0000286 CDecl->setClassInterface(IDecl);
Fariborz Jahanian6669a582008-01-17 20:33:24 +0000287
288 /// Check that class of this category is already completely declared.
289 if (!IDecl || IDecl->isForwardDecl())
290 Diag(ClassLoc, diag::err_undef_interface, ClassName->getName());
291 else {
292 /// Check for duplicate interface declaration for this category
293 ObjCCategoryDecl *CDeclChain;
294 for (CDeclChain = IDecl->getCategoryList(); CDeclChain;
295 CDeclChain = CDeclChain->getNextClassCategory()) {
296 if (CDeclChain->getIdentifier() == CategoryName) {
297 Diag(CategoryLoc, diag::err_dup_category_def, ClassName->getName(),
298 CategoryName->getName());
299 break;
300 }
Chris Lattner855e51f2007-12-12 07:09:47 +0000301 }
Chris Lattner855e51f2007-12-12 07:09:47 +0000302 if (!CDeclChain)
303 CDecl->insertNextClassCategory();
Fariborz Jahanian6669a582008-01-17 20:33:24 +0000304 }
Chris Lattner855e51f2007-12-12 07:09:47 +0000305
306 if (NumProtoRefs) {
307 /// Check then save referenced protocols
308 for (unsigned int i = 0; i != NumProtoRefs; i++) {
Ted Kremenek42730c52008-01-07 19:49:32 +0000309 ObjCProtocolDecl* RefPDecl = ObjCProtocols[ProtoRefNames[i]];
Chris Lattner855e51f2007-12-12 07:09:47 +0000310 if (!RefPDecl || RefPDecl->isForwardDecl()) {
311 Diag(CategoryLoc, diag::warn_undef_protocolref,
312 ProtoRefNames[i]->getName(),
313 CategoryName->getName());
314 }
Fariborz Jahanian87829072007-12-20 19:24:10 +0000315 CDecl->setCatReferencedProtocols(i, RefPDecl);
Chris Lattner855e51f2007-12-12 07:09:47 +0000316 }
317 CDecl->setLocEnd(EndProtoLoc);
318 }
319 return CDecl;
320}
321
322/// ActOnStartCategoryImplementation - Perform semantic checks on the
Ted Kremenek42730c52008-01-07 19:49:32 +0000323/// category implementation declaration and build an ObjCCategoryImplDecl
Chris Lattner855e51f2007-12-12 07:09:47 +0000324/// object.
325Sema::DeclTy *Sema::ActOnStartCategoryImplementation(
326 SourceLocation AtCatImplLoc,
327 IdentifierInfo *ClassName, SourceLocation ClassLoc,
328 IdentifierInfo *CatName, SourceLocation CatLoc) {
Ted Kremenek42730c52008-01-07 19:49:32 +0000329 ObjCInterfaceDecl *IDecl = getObjCInterfaceDecl(ClassName);
330 ObjCCategoryImplDecl *CDecl = new ObjCCategoryImplDecl(AtCatImplLoc,
Chris Lattner855e51f2007-12-12 07:09:47 +0000331 CatName, IDecl);
332 /// Check that class of this category is already completely declared.
333 if (!IDecl || IDecl->isForwardDecl())
334 Diag(ClassLoc, diag::err_undef_interface, ClassName->getName());
335
336 /// TODO: Check that CatName, category name, is not used in another
337 // implementation.
338 return CDecl;
339}
340
341Sema::DeclTy *Sema::ActOnStartClassImplementation(
342 SourceLocation AtClassImplLoc,
343 IdentifierInfo *ClassName, SourceLocation ClassLoc,
344 IdentifierInfo *SuperClassname,
345 SourceLocation SuperClassLoc) {
Ted Kremenek42730c52008-01-07 19:49:32 +0000346 ObjCInterfaceDecl* IDecl = 0;
Chris Lattner855e51f2007-12-12 07:09:47 +0000347 // Check for another declaration kind with the same name.
348 ScopedDecl *PrevDecl = LookupInterfaceDecl(ClassName);
Ted Kremenek42730c52008-01-07 19:49:32 +0000349 if (PrevDecl && !isa<ObjCInterfaceDecl>(PrevDecl)) {
Chris Lattner855e51f2007-12-12 07:09:47 +0000350 Diag(ClassLoc, diag::err_redefinition_different_kind,
351 ClassName->getName());
352 Diag(PrevDecl->getLocation(), diag::err_previous_definition);
353 }
354 else {
355 // Is there an interface declaration of this class; if not, warn!
Ted Kremenek42730c52008-01-07 19:49:32 +0000356 IDecl = dyn_cast_or_null<ObjCInterfaceDecl>(PrevDecl);
Chris Lattner855e51f2007-12-12 07:09:47 +0000357 if (!IDecl)
358 Diag(ClassLoc, diag::warn_undef_interface, ClassName->getName());
359 }
360
361 // Check that super class name is valid class name
Ted Kremenek42730c52008-01-07 19:49:32 +0000362 ObjCInterfaceDecl* SDecl = 0;
Chris Lattner855e51f2007-12-12 07:09:47 +0000363 if (SuperClassname) {
364 // Check if a different kind of symbol declared in this scope.
365 PrevDecl = LookupInterfaceDecl(SuperClassname);
Ted Kremenek42730c52008-01-07 19:49:32 +0000366 if (PrevDecl && !isa<ObjCInterfaceDecl>(PrevDecl)) {
Chris Lattner855e51f2007-12-12 07:09:47 +0000367 Diag(SuperClassLoc, diag::err_redefinition_different_kind,
368 SuperClassname->getName());
369 Diag(PrevDecl->getLocation(), diag::err_previous_definition);
370 }
371 else {
Ted Kremenek42730c52008-01-07 19:49:32 +0000372 SDecl = dyn_cast_or_null<ObjCInterfaceDecl>(PrevDecl);
Chris Lattner855e51f2007-12-12 07:09:47 +0000373 if (!SDecl)
374 Diag(SuperClassLoc, diag::err_undef_superclass,
375 SuperClassname->getName(), ClassName->getName());
376 else if (IDecl && IDecl->getSuperClass() != SDecl) {
377 // This implementation and its interface do not have the same
378 // super class.
379 Diag(SuperClassLoc, diag::err_conflicting_super_class,
380 SDecl->getName());
381 Diag(SDecl->getLocation(), diag::err_previous_definition);
382 }
383 }
384 }
385
386 if (!IDecl) {
387 // Legacy case of @implementation with no corresponding @interface.
388 // Build, chain & install the interface decl into the identifier.
Chris Lattner0db541b2008-03-16 01:15:50 +0000389 IDecl = ObjCInterfaceDecl::Create(Context, AtClassImplLoc, 0, ClassName,
390 false, true);
Chris Lattner855e51f2007-12-12 07:09:47 +0000391 IDecl->setNext(ClassName->getFETokenInfo<ScopedDecl>());
392 ClassName->setFETokenInfo(IDecl);
393 IDecl->setSuperClass(SDecl);
394 IDecl->setLocEnd(ClassLoc);
395
396 // Remember that this needs to be removed when the scope is popped.
397 TUScope->AddDecl(IDecl);
398 }
399
Ted Kremenek42730c52008-01-07 19:49:32 +0000400 ObjCImplementationDecl* IMPDecl =
401 new ObjCImplementationDecl(AtClassImplLoc, ClassName, IDecl, SDecl);
Chris Lattner855e51f2007-12-12 07:09:47 +0000402
403 // Check that there is no duplicate implementation of this class.
Ted Kremenek42730c52008-01-07 19:49:32 +0000404 if (ObjCImplementations[ClassName])
Chris Lattner855e51f2007-12-12 07:09:47 +0000405 Diag(ClassLoc, diag::err_dup_implementation_class, ClassName->getName());
406 else // add it to the list.
Ted Kremenek42730c52008-01-07 19:49:32 +0000407 ObjCImplementations[ClassName] = IMPDecl;
Chris Lattner855e51f2007-12-12 07:09:47 +0000408 return IMPDecl;
409}
410
Ted Kremenek42730c52008-01-07 19:49:32 +0000411void Sema::CheckImplementationIvars(ObjCImplementationDecl *ImpDecl,
412 ObjCIvarDecl **ivars, unsigned numIvars,
Chris Lattner855e51f2007-12-12 07:09:47 +0000413 SourceLocation RBrace) {
414 assert(ImpDecl && "missing implementation decl");
Ted Kremenek42730c52008-01-07 19:49:32 +0000415 ObjCInterfaceDecl* IDecl = getObjCInterfaceDecl(ImpDecl->getIdentifier());
Chris Lattner855e51f2007-12-12 07:09:47 +0000416 if (!IDecl)
417 return;
418 /// Check case of non-existing @interface decl.
419 /// (legacy objective-c @implementation decl without an @interface decl).
420 /// Add implementations's ivar to the synthesize class's ivar list.
421 if (IDecl->ImplicitInterfaceDecl()) {
422 IDecl->addInstanceVariablesToClass(ivars, numIvars, RBrace);
423 return;
424 }
425 // If implementation has empty ivar list, just return.
426 if (numIvars == 0)
427 return;
428
429 assert(ivars && "missing @implementation ivars");
430
431 // Check interface's Ivar list against those in the implementation.
432 // names and types must match.
433 //
Chris Lattner855e51f2007-12-12 07:09:47 +0000434 unsigned j = 0;
Ted Kremenek42730c52008-01-07 19:49:32 +0000435 ObjCInterfaceDecl::ivar_iterator
Chris Lattner9d76c722007-12-12 17:58:05 +0000436 IVI = IDecl->ivar_begin(), IVE = IDecl->ivar_end();
437 for (; numIvars > 0 && IVI != IVE; ++IVI) {
Ted Kremenek42730c52008-01-07 19:49:32 +0000438 ObjCIvarDecl* ImplIvar = ivars[j++];
439 ObjCIvarDecl* ClsIvar = *IVI;
Chris Lattner855e51f2007-12-12 07:09:47 +0000440 assert (ImplIvar && "missing implementation ivar");
441 assert (ClsIvar && "missing class ivar");
442 if (ImplIvar->getCanonicalType() != ClsIvar->getCanonicalType()) {
443 Diag(ImplIvar->getLocation(), diag::err_conflicting_ivar_type,
444 ImplIvar->getIdentifier()->getName());
445 Diag(ClsIvar->getLocation(), diag::err_previous_definition,
446 ClsIvar->getIdentifier()->getName());
447 }
448 // TODO: Two mismatched (unequal width) Ivar bitfields should be diagnosed
449 // as error.
450 else if (ImplIvar->getIdentifier() != ClsIvar->getIdentifier()) {
451 Diag(ImplIvar->getLocation(), diag::err_conflicting_ivar_name,
452 ImplIvar->getIdentifier()->getName());
453 Diag(ClsIvar->getLocation(), diag::err_previous_definition,
454 ClsIvar->getIdentifier()->getName());
Chris Lattner1cc669d2007-12-12 18:11:49 +0000455 return;
Chris Lattner855e51f2007-12-12 07:09:47 +0000456 }
457 --numIvars;
Chris Lattner855e51f2007-12-12 07:09:47 +0000458 }
Chris Lattner1cc669d2007-12-12 18:11:49 +0000459
460 if (numIvars > 0)
Chris Lattner847de6f2007-12-12 18:19:52 +0000461 Diag(ivars[j]->getLocation(), diag::err_inconsistant_ivar_count);
Chris Lattner1cc669d2007-12-12 18:11:49 +0000462 else if (IVI != IVE)
Chris Lattner847de6f2007-12-12 18:19:52 +0000463 Diag((*IVI)->getLocation(), diag::err_inconsistant_ivar_count);
Chris Lattner855e51f2007-12-12 07:09:47 +0000464}
465
Steve Naroffb4f48512008-02-10 21:38:56 +0000466void Sema::WarnUndefinedMethod(SourceLocation ImpLoc, ObjCMethodDecl *method,
467 bool &IncompleteImpl) {
468 if (!IncompleteImpl) {
469 Diag(ImpLoc, diag::warn_incomplete_impl);
470 IncompleteImpl = true;
471 }
472 Diag(ImpLoc, diag::warn_undef_method_impl, method->getSelector().getName());
473}
474
Steve Naroffb268d2a2008-02-08 22:06:17 +0000475/// CheckProtocolMethodDefs - This routine checks unimplemented methods
Chris Lattner855e51f2007-12-12 07:09:47 +0000476/// Declared in protocol, and those referenced by it.
Steve Naroffb268d2a2008-02-08 22:06:17 +0000477void Sema::CheckProtocolMethodDefs(SourceLocation ImpLoc,
478 ObjCProtocolDecl *PDecl,
Chris Lattner855e51f2007-12-12 07:09:47 +0000479 bool& IncompleteImpl,
Steve Naroffb268d2a2008-02-08 22:06:17 +0000480 const llvm::DenseSet<Selector> &InsMap,
481 const llvm::DenseSet<Selector> &ClsMap) {
Chris Lattner855e51f2007-12-12 07:09:47 +0000482 // check unimplemented instance methods.
Ted Kremenek42730c52008-01-07 19:49:32 +0000483 for (ObjCProtocolDecl::instmeth_iterator I = PDecl->instmeth_begin(),
Steve Naroff2ce399a2007-12-14 23:37:57 +0000484 E = PDecl->instmeth_end(); I != E; ++I) {
Ted Kremenek42730c52008-01-07 19:49:32 +0000485 ObjCMethodDecl *method = *I;
Steve Naroff2ce399a2007-12-14 23:37:57 +0000486 if (!InsMap.count(method->getSelector()) &&
Steve Naroffb4f48512008-02-10 21:38:56 +0000487 method->getImplementationControl() != ObjCMethodDecl::Optional)
488 WarnUndefinedMethod(ImpLoc, method, IncompleteImpl);
Chris Lattner855e51f2007-12-12 07:09:47 +0000489 }
490 // check unimplemented class methods
Ted Kremenek42730c52008-01-07 19:49:32 +0000491 for (ObjCProtocolDecl::classmeth_iterator I = PDecl->classmeth_begin(),
Steve Naroff2ce399a2007-12-14 23:37:57 +0000492 E = PDecl->classmeth_end(); I != E; ++I) {
Ted Kremenek42730c52008-01-07 19:49:32 +0000493 ObjCMethodDecl *method = *I;
Steve Naroff2ce399a2007-12-14 23:37:57 +0000494 if (!ClsMap.count(method->getSelector()) &&
Steve Naroffb4f48512008-02-10 21:38:56 +0000495 method->getImplementationControl() != ObjCMethodDecl::Optional)
496 WarnUndefinedMethod(ImpLoc, method, IncompleteImpl);
Steve Naroff2ce399a2007-12-14 23:37:57 +0000497 }
Chris Lattner855e51f2007-12-12 07:09:47 +0000498 // Check on this protocols's referenced protocols, recursively
Ted Kremenek42730c52008-01-07 19:49:32 +0000499 ObjCProtocolDecl** RefPDecl = PDecl->getReferencedProtocols();
Fariborz Jahanian87829072007-12-20 19:24:10 +0000500 for (unsigned i = 0; i < PDecl->getNumReferencedProtocols(); i++)
Steve Naroffb268d2a2008-02-08 22:06:17 +0000501 CheckProtocolMethodDefs(ImpLoc, RefPDecl[i], IncompleteImpl, InsMap, ClsMap);
Chris Lattner855e51f2007-12-12 07:09:47 +0000502}
503
Ted Kremenek42730c52008-01-07 19:49:32 +0000504void Sema::ImplMethodsVsClassMethods(ObjCImplementationDecl* IMPDecl,
505 ObjCInterfaceDecl* IDecl) {
Chris Lattner855e51f2007-12-12 07:09:47 +0000506 llvm::DenseSet<Selector> InsMap;
507 // Check and see if instance methods in class interface have been
508 // implemented in the implementation class.
Ted Kremenek42730c52008-01-07 19:49:32 +0000509 for (ObjCImplementationDecl::instmeth_iterator I = IMPDecl->instmeth_begin(),
Chris Lattner9d76c722007-12-12 17:58:05 +0000510 E = IMPDecl->instmeth_end(); I != E; ++I)
511 InsMap.insert((*I)->getSelector());
Chris Lattner855e51f2007-12-12 07:09:47 +0000512
513 bool IncompleteImpl = false;
Ted Kremenek42730c52008-01-07 19:49:32 +0000514 for (ObjCInterfaceDecl::instmeth_iterator I = IDecl->instmeth_begin(),
Chris Lattner9d76c722007-12-12 17:58:05 +0000515 E = IDecl->instmeth_end(); I != E; ++I)
Steve Naroffb4f48512008-02-10 21:38:56 +0000516 if (!InsMap.count((*I)->getSelector()))
517 WarnUndefinedMethod(IMPDecl->getLocation(), *I, IncompleteImpl);
Chris Lattner9d76c722007-12-12 17:58:05 +0000518
Chris Lattner855e51f2007-12-12 07:09:47 +0000519 llvm::DenseSet<Selector> ClsMap;
520 // Check and see if class methods in class interface have been
521 // implemented in the implementation class.
Ted Kremenek42730c52008-01-07 19:49:32 +0000522 for (ObjCImplementationDecl::classmeth_iterator I =IMPDecl->classmeth_begin(),
Chris Lattner9d76c722007-12-12 17:58:05 +0000523 E = IMPDecl->classmeth_end(); I != E; ++I)
524 ClsMap.insert((*I)->getSelector());
Chris Lattner855e51f2007-12-12 07:09:47 +0000525
Ted Kremenek42730c52008-01-07 19:49:32 +0000526 for (ObjCInterfaceDecl::classmeth_iterator I = IDecl->classmeth_begin(),
Chris Lattner9d76c722007-12-12 17:58:05 +0000527 E = IDecl->classmeth_end(); I != E; ++I)
Steve Naroffb4f48512008-02-10 21:38:56 +0000528 if (!ClsMap.count((*I)->getSelector()))
529 WarnUndefinedMethod(IMPDecl->getLocation(), *I, IncompleteImpl);
Chris Lattner855e51f2007-12-12 07:09:47 +0000530
531 // Check the protocol list for unimplemented methods in the @implementation
532 // class.
Ted Kremenek42730c52008-01-07 19:49:32 +0000533 ObjCProtocolDecl** protocols = IDecl->getReferencedProtocols();
Fariborz Jahanian87829072007-12-20 19:24:10 +0000534 for (unsigned i = 0; i < IDecl->getNumIntfRefProtocols(); i++)
Steve Naroffb268d2a2008-02-08 22:06:17 +0000535 CheckProtocolMethodDefs(IMPDecl->getLocation(), protocols[i],
536 IncompleteImpl, InsMap, ClsMap);
Chris Lattner855e51f2007-12-12 07:09:47 +0000537}
538
539/// ImplCategoryMethodsVsIntfMethods - Checks that methods declared in the
540/// category interface is implemented in the category @implementation.
Ted Kremenek42730c52008-01-07 19:49:32 +0000541void Sema::ImplCategoryMethodsVsIntfMethods(ObjCCategoryImplDecl *CatImplDecl,
542 ObjCCategoryDecl *CatClassDecl) {
Chris Lattner855e51f2007-12-12 07:09:47 +0000543 llvm::DenseSet<Selector> InsMap;
544 // Check and see if instance methods in category interface have been
545 // implemented in its implementation class.
Ted Kremenek42730c52008-01-07 19:49:32 +0000546 for (ObjCCategoryImplDecl::instmeth_iterator I =CatImplDecl->instmeth_begin(),
Chris Lattner9d76c722007-12-12 17:58:05 +0000547 E = CatImplDecl->instmeth_end(); I != E; ++I)
548 InsMap.insert((*I)->getSelector());
Chris Lattner855e51f2007-12-12 07:09:47 +0000549
550 bool IncompleteImpl = false;
Ted Kremenek42730c52008-01-07 19:49:32 +0000551 for (ObjCCategoryDecl::instmeth_iterator I = CatClassDecl->instmeth_begin(),
Steve Naroff2ce399a2007-12-14 23:37:57 +0000552 E = CatClassDecl->instmeth_end(); I != E; ++I)
Steve Naroffb4f48512008-02-10 21:38:56 +0000553 if (!InsMap.count((*I)->getSelector()))
554 WarnUndefinedMethod(CatImplDecl->getLocation(), *I, IncompleteImpl);
555
Chris Lattner855e51f2007-12-12 07:09:47 +0000556 llvm::DenseSet<Selector> ClsMap;
557 // Check and see if class methods in category interface have been
558 // implemented in its implementation class.
Ted Kremenek42730c52008-01-07 19:49:32 +0000559 for (ObjCCategoryImplDecl::classmeth_iterator
Chris Lattner9d76c722007-12-12 17:58:05 +0000560 I = CatImplDecl->classmeth_begin(), E = CatImplDecl->classmeth_end();
561 I != E; ++I)
562 ClsMap.insert((*I)->getSelector());
Chris Lattner855e51f2007-12-12 07:09:47 +0000563
Ted Kremenek42730c52008-01-07 19:49:32 +0000564 for (ObjCCategoryDecl::classmeth_iterator I = CatClassDecl->classmeth_begin(),
Steve Naroff2ce399a2007-12-14 23:37:57 +0000565 E = CatClassDecl->classmeth_end(); I != E; ++I)
Steve Naroffb4f48512008-02-10 21:38:56 +0000566 if (!ClsMap.count((*I)->getSelector()))
567 WarnUndefinedMethod(CatImplDecl->getLocation(), *I, IncompleteImpl);
Chris Lattner855e51f2007-12-12 07:09:47 +0000568
569 // Check the protocol list for unimplemented methods in the @implementation
570 // class.
Ted Kremenek42730c52008-01-07 19:49:32 +0000571 ObjCProtocolDecl** protocols = CatClassDecl->getReferencedProtocols();
Fariborz Jahanian87829072007-12-20 19:24:10 +0000572 for (unsigned i = 0; i < CatClassDecl->getNumReferencedProtocols(); i++) {
Ted Kremenek42730c52008-01-07 19:49:32 +0000573 ObjCProtocolDecl* PDecl = protocols[i];
Steve Naroffb268d2a2008-02-08 22:06:17 +0000574 CheckProtocolMethodDefs(CatImplDecl->getLocation(), PDecl, IncompleteImpl,
575 InsMap, ClsMap);
Chris Lattner855e51f2007-12-12 07:09:47 +0000576 }
Chris Lattner855e51f2007-12-12 07:09:47 +0000577}
578
579/// ActOnForwardClassDeclaration -
580Action::DeclTy *
581Sema::ActOnForwardClassDeclaration(SourceLocation AtClassLoc,
582 IdentifierInfo **IdentList, unsigned NumElts)
583{
Ted Kremenek42730c52008-01-07 19:49:32 +0000584 llvm::SmallVector<ObjCInterfaceDecl*, 32> Interfaces;
Chris Lattner855e51f2007-12-12 07:09:47 +0000585
586 for (unsigned i = 0; i != NumElts; ++i) {
587 // Check for another declaration kind with the same name.
588 ScopedDecl *PrevDecl = LookupInterfaceDecl(IdentList[i]);
Ted Kremenek42730c52008-01-07 19:49:32 +0000589 if (PrevDecl && !isa<ObjCInterfaceDecl>(PrevDecl)) {
Chris Lattner855e51f2007-12-12 07:09:47 +0000590 Diag(AtClassLoc, diag::err_redefinition_different_kind,
591 IdentList[i]->getName());
592 Diag(PrevDecl->getLocation(), diag::err_previous_definition);
593 }
Ted Kremenek42730c52008-01-07 19:49:32 +0000594 ObjCInterfaceDecl *IDecl = dyn_cast_or_null<ObjCInterfaceDecl>(PrevDecl);
Chris Lattner855e51f2007-12-12 07:09:47 +0000595 if (!IDecl) { // Not already seen? Make a forward decl.
Chris Lattner0db541b2008-03-16 01:15:50 +0000596 IDecl = ObjCInterfaceDecl::Create(Context, AtClassLoc, 0, IdentList[i],
597 true);
Chris Lattner855e51f2007-12-12 07:09:47 +0000598 // Chain & install the interface decl into the identifier.
599 IDecl->setNext(IdentList[i]->getFETokenInfo<ScopedDecl>());
600 IdentList[i]->setFETokenInfo(IDecl);
601
602 // Remember that this needs to be removed when the scope is popped.
603 TUScope->AddDecl(IDecl);
604 }
605
606 Interfaces.push_back(IDecl);
607 }
608
Chris Lattnere29dc832008-03-16 20:34:23 +0000609 return ObjCClassDecl::Create(Context, AtClassLoc,
610 &Interfaces[0], Interfaces.size());
Chris Lattner855e51f2007-12-12 07:09:47 +0000611}
612
613
614/// MatchTwoMethodDeclarations - Checks that two methods have matching type and
615/// returns true, or false, accordingly.
616/// TODO: Handle protocol list; such as id<p1,p2> in type comparisons
Ted Kremenek42730c52008-01-07 19:49:32 +0000617bool Sema::MatchTwoMethodDeclarations(const ObjCMethodDecl *Method,
618 const ObjCMethodDecl *PrevMethod) {
Chris Lattner855e51f2007-12-12 07:09:47 +0000619 if (Method->getResultType().getCanonicalType() !=
620 PrevMethod->getResultType().getCanonicalType())
621 return false;
Chris Lattner685d7922008-03-16 01:07:14 +0000622 for (unsigned i = 0, e = Method->getNumParams(); i != e; ++i) {
Chris Lattner855e51f2007-12-12 07:09:47 +0000623 ParmVarDecl *ParamDecl = Method->getParamDecl(i);
624 ParmVarDecl *PrevParamDecl = PrevMethod->getParamDecl(i);
625 if (ParamDecl->getCanonicalType() != PrevParamDecl->getCanonicalType())
626 return false;
627 }
628 return true;
629}
630
Ted Kremenek42730c52008-01-07 19:49:32 +0000631void Sema::AddInstanceMethodToGlobalPool(ObjCMethodDecl *Method) {
632 ObjCMethodList &FirstMethod = InstanceMethodPool[Method->getSelector()];
Chris Lattner855e51f2007-12-12 07:09:47 +0000633 if (!FirstMethod.Method) {
634 // Haven't seen a method with this selector name yet - add it.
635 FirstMethod.Method = Method;
636 FirstMethod.Next = 0;
637 } else {
638 // We've seen a method with this name, now check the type signature(s).
639 bool match = MatchTwoMethodDeclarations(Method, FirstMethod.Method);
640
Ted Kremenek42730c52008-01-07 19:49:32 +0000641 for (ObjCMethodList *Next = FirstMethod.Next; !match && Next;
Chris Lattner855e51f2007-12-12 07:09:47 +0000642 Next = Next->Next)
643 match = MatchTwoMethodDeclarations(Method, Next->Method);
644
645 if (!match) {
646 // We have a new signature for an existing method - add it.
647 // This is extremely rare. Only 1% of Cocoa selectors are "overloaded".
Ted Kremenek42730c52008-01-07 19:49:32 +0000648 struct ObjCMethodList *OMI = new ObjCMethodList(Method, FirstMethod.Next);
Chris Lattner855e51f2007-12-12 07:09:47 +0000649 FirstMethod.Next = OMI;
650 }
651 }
652}
653
Ted Kremenek42730c52008-01-07 19:49:32 +0000654void Sema::AddFactoryMethodToGlobalPool(ObjCMethodDecl *Method) {
655 ObjCMethodList &FirstMethod = FactoryMethodPool[Method->getSelector()];
Chris Lattner855e51f2007-12-12 07:09:47 +0000656 if (!FirstMethod.Method) {
657 // Haven't seen a method with this selector name yet - add it.
658 FirstMethod.Method = Method;
659 FirstMethod.Next = 0;
660 } else {
661 // We've seen a method with this name, now check the type signature(s).
662 bool match = MatchTwoMethodDeclarations(Method, FirstMethod.Method);
663
Ted Kremenek42730c52008-01-07 19:49:32 +0000664 for (ObjCMethodList *Next = FirstMethod.Next; !match && Next;
Chris Lattner855e51f2007-12-12 07:09:47 +0000665 Next = Next->Next)
666 match = MatchTwoMethodDeclarations(Method, Next->Method);
667
668 if (!match) {
669 // We have a new signature for an existing method - add it.
670 // This is extremely rare. Only 1% of Cocoa selectors are "overloaded".
Ted Kremenek42730c52008-01-07 19:49:32 +0000671 struct ObjCMethodList *OMI = new ObjCMethodList(Method, FirstMethod.Next);
Chris Lattner855e51f2007-12-12 07:09:47 +0000672 FirstMethod.Next = OMI;
673 }
674 }
675}
676
Steve Narofffe9eb6a2007-12-18 01:30:32 +0000677// Note: For class/category implemenations, allMethods/allProperties is
678// always null.
Chris Lattner855e51f2007-12-12 07:09:47 +0000679void Sema::ActOnAtEnd(SourceLocation AtEndLoc, DeclTy *classDecl,
680 DeclTy **allMethods, unsigned allNum,
681 DeclTy **allProperties, unsigned pNum) {
682 Decl *ClassDecl = static_cast<Decl *>(classDecl);
683
Steve Narofffe9eb6a2007-12-18 01:30:32 +0000684 // FIXME: If we don't have a ClassDecl, we have an error. We should consider
685 // always passing in a decl. If the decl has an error, isInvalidDecl()
Chris Lattner855e51f2007-12-12 07:09:47 +0000686 // should be true.
687 if (!ClassDecl)
688 return;
689
Ted Kremenek42730c52008-01-07 19:49:32 +0000690 llvm::SmallVector<ObjCMethodDecl*, 32> insMethods;
691 llvm::SmallVector<ObjCMethodDecl*, 16> clsMethods;
Chris Lattner855e51f2007-12-12 07:09:47 +0000692
Ted Kremenek42730c52008-01-07 19:49:32 +0000693 llvm::DenseMap<Selector, const ObjCMethodDecl*> InsMap;
694 llvm::DenseMap<Selector, const ObjCMethodDecl*> ClsMap;
Chris Lattner855e51f2007-12-12 07:09:47 +0000695
696 bool isInterfaceDeclKind =
Ted Kremenek42730c52008-01-07 19:49:32 +0000697 (isa<ObjCInterfaceDecl>(ClassDecl) || isa<ObjCCategoryDecl>(ClassDecl)
698 || isa<ObjCProtocolDecl>(ClassDecl));
699 bool checkIdenticalMethods = isa<ObjCImplementationDecl>(ClassDecl);
Chris Lattner855e51f2007-12-12 07:09:47 +0000700
701 // TODO: property declaration in category and protocols.
Ted Kremenek42730c52008-01-07 19:49:32 +0000702 if (pNum != 0 && isa<ObjCInterfaceDecl>(ClassDecl)) {
703 ObjCPropertyDecl **properties = new ObjCPropertyDecl*[pNum];
704 memcpy(properties, allProperties, pNum*sizeof(ObjCPropertyDecl*));
705 dyn_cast<ObjCInterfaceDecl>(ClassDecl)->setPropertyDecls(properties);
706 dyn_cast<ObjCInterfaceDecl>(ClassDecl)->setNumPropertyDecl(pNum);
Chris Lattner855e51f2007-12-12 07:09:47 +0000707 }
708
709 for (unsigned i = 0; i < allNum; i++ ) {
Ted Kremenek42730c52008-01-07 19:49:32 +0000710 ObjCMethodDecl *Method =
711 cast_or_null<ObjCMethodDecl>(static_cast<Decl*>(allMethods[i]));
Chris Lattner855e51f2007-12-12 07:09:47 +0000712
713 if (!Method) continue; // Already issued a diagnostic.
714 if (Method->isInstance()) {
715 /// Check for instance method of the same name with incompatible types
Ted Kremenek42730c52008-01-07 19:49:32 +0000716 const ObjCMethodDecl *&PrevMethod = InsMap[Method->getSelector()];
Chris Lattner855e51f2007-12-12 07:09:47 +0000717 bool match = PrevMethod ? MatchTwoMethodDeclarations(Method, PrevMethod)
718 : false;
719 if (isInterfaceDeclKind && PrevMethod && !match
720 || checkIdenticalMethods && match) {
721 Diag(Method->getLocation(), diag::error_duplicate_method_decl,
722 Method->getSelector().getName());
723 Diag(PrevMethod->getLocation(), diag::err_previous_declaration);
724 } else {
725 insMethods.push_back(Method);
726 InsMap[Method->getSelector()] = Method;
727 /// The following allows us to typecheck messages to "id".
728 AddInstanceMethodToGlobalPool(Method);
729 }
730 }
731 else {
732 /// Check for class method of the same name with incompatible types
Ted Kremenek42730c52008-01-07 19:49:32 +0000733 const ObjCMethodDecl *&PrevMethod = ClsMap[Method->getSelector()];
Chris Lattner855e51f2007-12-12 07:09:47 +0000734 bool match = PrevMethod ? MatchTwoMethodDeclarations(Method, PrevMethod)
735 : false;
736 if (isInterfaceDeclKind && PrevMethod && !match
737 || checkIdenticalMethods && match) {
738 Diag(Method->getLocation(), diag::error_duplicate_method_decl,
739 Method->getSelector().getName());
740 Diag(PrevMethod->getLocation(), diag::err_previous_declaration);
741 } else {
742 clsMethods.push_back(Method);
743 ClsMap[Method->getSelector()] = Method;
Steve Narofffe9eb6a2007-12-18 01:30:32 +0000744 /// The following allows us to typecheck messages to "Class".
745 AddFactoryMethodToGlobalPool(Method);
Chris Lattner855e51f2007-12-12 07:09:47 +0000746 }
747 }
748 }
749
Ted Kremenek42730c52008-01-07 19:49:32 +0000750 if (ObjCInterfaceDecl *I = dyn_cast<ObjCInterfaceDecl>(ClassDecl)) {
Chris Lattner855e51f2007-12-12 07:09:47 +0000751 I->addMethods(&insMethods[0], insMethods.size(),
752 &clsMethods[0], clsMethods.size(), AtEndLoc);
Ted Kremenek42730c52008-01-07 19:49:32 +0000753 } else if (ObjCProtocolDecl *P = dyn_cast<ObjCProtocolDecl>(ClassDecl)) {
Chris Lattner855e51f2007-12-12 07:09:47 +0000754 P->addMethods(&insMethods[0], insMethods.size(),
755 &clsMethods[0], clsMethods.size(), AtEndLoc);
756 }
Ted Kremenek42730c52008-01-07 19:49:32 +0000757 else if (ObjCCategoryDecl *C = dyn_cast<ObjCCategoryDecl>(ClassDecl)) {
Chris Lattner855e51f2007-12-12 07:09:47 +0000758 C->addMethods(&insMethods[0], insMethods.size(),
759 &clsMethods[0], clsMethods.size(), AtEndLoc);
760 }
Ted Kremenek42730c52008-01-07 19:49:32 +0000761 else if (ObjCImplementationDecl *IC =
762 dyn_cast<ObjCImplementationDecl>(ClassDecl)) {
Chris Lattner855e51f2007-12-12 07:09:47 +0000763 IC->setLocEnd(AtEndLoc);
Ted Kremenek42730c52008-01-07 19:49:32 +0000764 if (ObjCInterfaceDecl* IDecl = getObjCInterfaceDecl(IC->getIdentifier()))
Chris Lattner855e51f2007-12-12 07:09:47 +0000765 ImplMethodsVsClassMethods(IC, IDecl);
766 } else {
Ted Kremenek42730c52008-01-07 19:49:32 +0000767 ObjCCategoryImplDecl* CatImplClass = cast<ObjCCategoryImplDecl>(ClassDecl);
Chris Lattner855e51f2007-12-12 07:09:47 +0000768 CatImplClass->setLocEnd(AtEndLoc);
Ted Kremenek42730c52008-01-07 19:49:32 +0000769 ObjCInterfaceDecl* IDecl = CatImplClass->getClassInterface();
Chris Lattner855e51f2007-12-12 07:09:47 +0000770 // Find category interface decl and then check that all methods declared
771 // in this interface is implemented in the category @implementation.
772 if (IDecl) {
Ted Kremenek42730c52008-01-07 19:49:32 +0000773 for (ObjCCategoryDecl *Categories = IDecl->getCategoryList();
Chris Lattner855e51f2007-12-12 07:09:47 +0000774 Categories; Categories = Categories->getNextClassCategory()) {
775 if (Categories->getIdentifier() == CatImplClass->getIdentifier()) {
776 ImplCategoryMethodsVsIntfMethods(CatImplClass, Categories);
777 break;
778 }
779 }
780 }
781 }
782}
783
784
785/// CvtQTToAstBitMask - utility routine to produce an AST bitmask for
786/// objective-c's type qualifier from the parser version of the same info.
Ted Kremenek42730c52008-01-07 19:49:32 +0000787static Decl::ObjCDeclQualifier
788CvtQTToAstBitMask(ObjCDeclSpec::ObjCDeclQualifier PQTVal) {
789 Decl::ObjCDeclQualifier ret = Decl::OBJC_TQ_None;
790 if (PQTVal & ObjCDeclSpec::DQ_In)
791 ret = (Decl::ObjCDeclQualifier)(ret | Decl::OBJC_TQ_In);
792 if (PQTVal & ObjCDeclSpec::DQ_Inout)
793 ret = (Decl::ObjCDeclQualifier)(ret | Decl::OBJC_TQ_Inout);
794 if (PQTVal & ObjCDeclSpec::DQ_Out)
795 ret = (Decl::ObjCDeclQualifier)(ret | Decl::OBJC_TQ_Out);
796 if (PQTVal & ObjCDeclSpec::DQ_Bycopy)
797 ret = (Decl::ObjCDeclQualifier)(ret | Decl::OBJC_TQ_Bycopy);
798 if (PQTVal & ObjCDeclSpec::DQ_Byref)
799 ret = (Decl::ObjCDeclQualifier)(ret | Decl::OBJC_TQ_Byref);
800 if (PQTVal & ObjCDeclSpec::DQ_Oneway)
801 ret = (Decl::ObjCDeclQualifier)(ret | Decl::OBJC_TQ_Oneway);
Chris Lattner855e51f2007-12-12 07:09:47 +0000802
803 return ret;
804}
805
806Sema::DeclTy *Sema::ActOnMethodDeclaration(
807 SourceLocation MethodLoc, SourceLocation EndLoc,
Chris Lattner114add62008-03-16 00:49:28 +0000808 tok::TokenKind MethodType, DeclTy *classDecl,
Ted Kremenek42730c52008-01-07 19:49:32 +0000809 ObjCDeclSpec &ReturnQT, TypeTy *ReturnType,
Chris Lattner855e51f2007-12-12 07:09:47 +0000810 Selector Sel,
811 // optional arguments. The number of types/arguments is obtained
812 // from the Sel.getNumArgs().
Ted Kremenek42730c52008-01-07 19:49:32 +0000813 ObjCDeclSpec *ArgQT, TypeTy **ArgTypes, IdentifierInfo **ArgNames,
Chris Lattner855e51f2007-12-12 07:09:47 +0000814 AttributeList *AttrList, tok::ObjCKeywordKind MethodDeclKind,
815 bool isVariadic) {
Chris Lattner114add62008-03-16 00:49:28 +0000816 Decl *ClassDecl = static_cast<Decl*>(classDecl);
Steve Naroff70f16242008-02-29 21:48:07 +0000817
818 // Make sure we can establish a context for the method.
819 if (!ClassDecl) {
820 Diag(MethodLoc, diag::error_missing_method_context);
821 return 0;
822 }
Chris Lattner855e51f2007-12-12 07:09:47 +0000823 llvm::SmallVector<ParmVarDecl*, 16> Params;
824
825 for (unsigned i = 0; i < Sel.getNumArgs(); i++) {
826 // FIXME: arg->AttrList must be stored too!
827 QualType argType;
828
829 if (ArgTypes[i])
830 argType = QualType::getFromOpaquePtr(ArgTypes[i]);
831 else
Ted Kremenek42730c52008-01-07 19:49:32 +0000832 argType = Context.getObjCIdType();
Chris Lattner58114f02008-03-15 21:32:50 +0000833 ParmVarDecl* Param = ParmVarDecl::Create(Context, SourceLocation(/*FIXME*/),
Chris Lattner48d225c2008-03-15 21:10:16 +0000834 ArgNames[i], argType,
Chris Lattner58114f02008-03-15 21:32:50 +0000835 VarDecl::None, 0);
Ted Kremenek42730c52008-01-07 19:49:32 +0000836 Param->setObjCDeclQualifier(
837 CvtQTToAstBitMask(ArgQT[i].getObjCDeclQualifier()));
Chris Lattner855e51f2007-12-12 07:09:47 +0000838 Params.push_back(Param);
839 }
840 QualType resultDeclType;
841
842 if (ReturnType)
843 resultDeclType = QualType::getFromOpaquePtr(ReturnType);
844 else // get the type for "id".
Ted Kremenek42730c52008-01-07 19:49:32 +0000845 resultDeclType = Context.getObjCIdType();
Chris Lattner855e51f2007-12-12 07:09:47 +0000846
Chris Lattner114add62008-03-16 00:49:28 +0000847 ObjCMethodDecl* ObjCMethod =
848 ObjCMethodDecl::Create(Context, MethodLoc, EndLoc, Sel, resultDeclType,
Chris Lattnerf7355832008-03-16 00:58:16 +0000849 ClassDecl, AttrList,
Chris Lattner114add62008-03-16 00:49:28 +0000850 MethodType == tok::minus, isVariadic,
851 MethodDeclKind == tok::objc_optional ?
852 ObjCMethodDecl::Optional :
853 ObjCMethodDecl::Required);
854
Ted Kremenek42730c52008-01-07 19:49:32 +0000855 ObjCMethod->setMethodParams(&Params[0], Sel.getNumArgs());
856 ObjCMethod->setObjCDeclQualifier(
857 CvtQTToAstBitMask(ReturnQT.getObjCDeclQualifier()));
858 const ObjCMethodDecl *PrevMethod = 0;
Chris Lattner855e51f2007-12-12 07:09:47 +0000859
860 // For implementations (which can be very "coarse grain"), we add the
861 // method now. This allows the AST to implement lookup methods that work
862 // incrementally (without waiting until we parse the @end). It also allows
863 // us to flag multiple declaration errors as they occur.
Ted Kremenek42730c52008-01-07 19:49:32 +0000864 if (ObjCImplementationDecl *ImpDecl =
Chris Lattner114add62008-03-16 00:49:28 +0000865 dyn_cast<ObjCImplementationDecl>(ClassDecl)) {
Chris Lattner855e51f2007-12-12 07:09:47 +0000866 if (MethodType == tok::minus) {
Steve Naroff74273de2007-12-19 22:27:04 +0000867 PrevMethod = ImpDecl->getInstanceMethod(Sel);
Ted Kremenek42730c52008-01-07 19:49:32 +0000868 ImpDecl->addInstanceMethod(ObjCMethod);
Chris Lattner855e51f2007-12-12 07:09:47 +0000869 } else {
Steve Naroff74273de2007-12-19 22:27:04 +0000870 PrevMethod = ImpDecl->getClassMethod(Sel);
Ted Kremenek42730c52008-01-07 19:49:32 +0000871 ImpDecl->addClassMethod(ObjCMethod);
Chris Lattner855e51f2007-12-12 07:09:47 +0000872 }
873 }
Ted Kremenek42730c52008-01-07 19:49:32 +0000874 else if (ObjCCategoryImplDecl *CatImpDecl =
Chris Lattner114add62008-03-16 00:49:28 +0000875 dyn_cast<ObjCCategoryImplDecl>(ClassDecl)) {
Chris Lattner855e51f2007-12-12 07:09:47 +0000876 if (MethodType == tok::minus) {
Steve Naroff74273de2007-12-19 22:27:04 +0000877 PrevMethod = CatImpDecl->getInstanceMethod(Sel);
Ted Kremenek42730c52008-01-07 19:49:32 +0000878 CatImpDecl->addInstanceMethod(ObjCMethod);
Chris Lattner855e51f2007-12-12 07:09:47 +0000879 } else {
Steve Naroff74273de2007-12-19 22:27:04 +0000880 PrevMethod = CatImpDecl->getClassMethod(Sel);
Ted Kremenek42730c52008-01-07 19:49:32 +0000881 CatImpDecl->addClassMethod(ObjCMethod);
Chris Lattner855e51f2007-12-12 07:09:47 +0000882 }
883 }
884 if (PrevMethod) {
885 // You can never have two method definitions with the same name.
Ted Kremenek42730c52008-01-07 19:49:32 +0000886 Diag(ObjCMethod->getLocation(), diag::error_duplicate_method_decl,
887 ObjCMethod->getSelector().getName());
Chris Lattner855e51f2007-12-12 07:09:47 +0000888 Diag(PrevMethod->getLocation(), diag::err_previous_declaration);
889 }
Ted Kremenek42730c52008-01-07 19:49:32 +0000890 return ObjCMethod;
Chris Lattner855e51f2007-12-12 07:09:47 +0000891}
892
Ted Kremenek42730c52008-01-07 19:49:32 +0000893Sema::DeclTy *Sema::ActOnAddObjCProperties(SourceLocation AtLoc,
894 DeclTy **allProperties, unsigned NumProperties, ObjCDeclSpec &DS) {
895 ObjCPropertyDecl *PDecl = new ObjCPropertyDecl(AtLoc);
Chris Lattner855e51f2007-12-12 07:09:47 +0000896
Ted Kremenek42730c52008-01-07 19:49:32 +0000897 if(DS.getPropertyAttributes() & ObjCDeclSpec::DQ_PR_readonly)
898 PDecl->setPropertyAttributes(ObjCPropertyDecl::OBJC_PR_readonly);
Chris Lattner855e51f2007-12-12 07:09:47 +0000899
Ted Kremenek42730c52008-01-07 19:49:32 +0000900 if(DS.getPropertyAttributes() & ObjCDeclSpec::DQ_PR_getter) {
901 PDecl->setPropertyAttributes(ObjCPropertyDecl::OBJC_PR_getter);
Chris Lattner855e51f2007-12-12 07:09:47 +0000902 PDecl->setGetterName(DS.getGetterName());
903 }
904
Ted Kremenek42730c52008-01-07 19:49:32 +0000905 if(DS.getPropertyAttributes() & ObjCDeclSpec::DQ_PR_setter) {
906 PDecl->setPropertyAttributes(ObjCPropertyDecl::OBJC_PR_setter);
Chris Lattner855e51f2007-12-12 07:09:47 +0000907 PDecl->setSetterName(DS.getSetterName());
908 }
909
Ted Kremenek42730c52008-01-07 19:49:32 +0000910 if(DS.getPropertyAttributes() & ObjCDeclSpec::DQ_PR_assign)
911 PDecl->setPropertyAttributes(ObjCPropertyDecl::OBJC_PR_assign);
Chris Lattner855e51f2007-12-12 07:09:47 +0000912
Ted Kremenek42730c52008-01-07 19:49:32 +0000913 if(DS.getPropertyAttributes() & ObjCDeclSpec::DQ_PR_readwrite)
914 PDecl->setPropertyAttributes(ObjCPropertyDecl::OBJC_PR_readwrite);
Chris Lattner855e51f2007-12-12 07:09:47 +0000915
Ted Kremenek42730c52008-01-07 19:49:32 +0000916 if(DS.getPropertyAttributes() & ObjCDeclSpec::DQ_PR_retain)
917 PDecl->setPropertyAttributes(ObjCPropertyDecl::OBJC_PR_retain);
Chris Lattner855e51f2007-12-12 07:09:47 +0000918
Ted Kremenek42730c52008-01-07 19:49:32 +0000919 if(DS.getPropertyAttributes() & ObjCDeclSpec::DQ_PR_copy)
920 PDecl->setPropertyAttributes(ObjCPropertyDecl::OBJC_PR_copy);
Chris Lattner855e51f2007-12-12 07:09:47 +0000921
Ted Kremenek42730c52008-01-07 19:49:32 +0000922 if(DS.getPropertyAttributes() & ObjCDeclSpec::DQ_PR_nonatomic)
923 PDecl->setPropertyAttributes(ObjCPropertyDecl::OBJC_PR_nonatomic);
Chris Lattner855e51f2007-12-12 07:09:47 +0000924
925 PDecl->setNumPropertyDecls(NumProperties);
926 if (NumProperties != 0) {
Ted Kremenek42730c52008-01-07 19:49:32 +0000927 ObjCIvarDecl **properties = new ObjCIvarDecl*[NumProperties];
928 memcpy(properties, allProperties, NumProperties*sizeof(ObjCIvarDecl*));
Chris Lattner855e51f2007-12-12 07:09:47 +0000929 PDecl->setPropertyDecls(properties);
930 }
931 return PDecl;
932}
933