Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1 | //===--- SemaDecl.cpp - Semantic Analysis for Declarations ----------------===// |
| 2 | // |
| 3 | // The LLVM Compiler Infrastructure |
| 4 | // |
| 5 | // This file was developed by Chris Lattner and is distributed under |
| 6 | // the University of Illinois Open Source License. See LICENSE.TXT for details. |
| 7 | // |
| 8 | //===----------------------------------------------------------------------===// |
| 9 | // |
| 10 | // This file implements semantic analysis for declarations. |
| 11 | // |
| 12 | //===----------------------------------------------------------------------===// |
| 13 | |
| 14 | #include "Sema.h" |
| 15 | #include "clang/AST/ASTContext.h" |
| 16 | #include "clang/AST/Builtins.h" |
| 17 | #include "clang/AST/Decl.h" |
Steve Naroff | 980e508 | 2007-10-01 19:00:59 +0000 | [diff] [blame] | 18 | #include "clang/AST/DeclObjC.h" |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 19 | #include "clang/AST/Expr.h" |
| 20 | #include "clang/AST/Type.h" |
| 21 | #include "clang/Parse/DeclSpec.h" |
| 22 | #include "clang/Parse/Scope.h" |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 23 | #include "clang/Basic/LangOptions.h" |
| 24 | #include "clang/Basic/TargetInfo.h" |
Steve Naroff | 563477d | 2007-09-18 23:55:05 +0000 | [diff] [blame] | 25 | #include "llvm/ADT/SmallString.h" |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 26 | #include "llvm/ADT/SmallSet.h" |
Fariborz Jahanian | 85ff264 | 2007-10-05 18:00:57 +0000 | [diff] [blame] | 27 | #include "llvm/ADT/DenseSet.h" |
Steve Naroff | 8ee529b | 2007-10-31 18:42:27 +0000 | [diff] [blame] | 28 | #include "clang/Lex/Preprocessor.h" |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 29 | using namespace clang; |
| 30 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 31 | Sema::DeclTy *Sema::isTypeName(const IdentifierInfo &II, Scope *S) const { |
Fariborz Jahanian | bece4ac | 2007-10-12 16:34:10 +0000 | [diff] [blame] | 32 | Decl *IIDecl = II.getFETokenInfo<Decl>(); |
| 33 | // Find first occurance of none-tagged declaration |
| 34 | while(IIDecl && IIDecl->getIdentifierNamespace() != Decl::IDNS_Ordinary) |
| 35 | IIDecl = cast<ScopedDecl>(IIDecl)->getNext(); |
| 36 | if (!IIDecl) |
| 37 | return 0; |
| 38 | if (isa<TypedefDecl>(IIDecl) || isa<ObjcInterfaceDecl>(IIDecl)) |
| 39 | return IIDecl; |
| 40 | if (ObjcCompatibleAliasDecl *ADecl = |
| 41 | dyn_cast<ObjcCompatibleAliasDecl>(IIDecl)) |
| 42 | return ADecl->getClassInterface(); |
Steve Naroff | 3536b44 | 2007-09-06 21:24:23 +0000 | [diff] [blame] | 43 | return 0; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 44 | } |
| 45 | |
Steve Naroff | b216c88 | 2007-10-09 22:01:59 +0000 | [diff] [blame] | 46 | void Sema::ActOnPopScope(SourceLocation Loc, Scope *S) { |
Chris Lattner | 31e0572 | 2007-08-26 06:24:45 +0000 | [diff] [blame] | 47 | if (S->decl_empty()) return; |
| 48 | assert((S->getFlags() & Scope::DeclScope) &&"Scope shouldn't contain decls!"); |
| 49 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 50 | for (Scope::decl_iterator I = S->decl_begin(), E = S->decl_end(); |
| 51 | I != E; ++I) { |
Steve Naroff | c752d04 | 2007-09-13 18:10:37 +0000 | [diff] [blame] | 52 | Decl *TmpD = static_cast<Decl*>(*I); |
| 53 | assert(TmpD && "This decl didn't get pushed??"); |
| 54 | ScopedDecl *D = dyn_cast<ScopedDecl>(TmpD); |
| 55 | assert(D && "This decl isn't a ScopedDecl?"); |
| 56 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 57 | IdentifierInfo *II = D->getIdentifier(); |
| 58 | if (!II) continue; |
| 59 | |
| 60 | // Unlink this decl from the identifier. Because the scope contains decls |
| 61 | // in an unordered collection, and because we have multiple identifier |
| 62 | // namespaces (e.g. tag, normal, label),the decl may not be the first entry. |
| 63 | if (II->getFETokenInfo<Decl>() == D) { |
| 64 | // Normal case, no multiple decls in different namespaces. |
| 65 | II->setFETokenInfo(D->getNext()); |
| 66 | } else { |
| 67 | // Scan ahead. There are only three namespaces in C, so this loop can |
| 68 | // never execute more than 3 times. |
Steve Naroff | c752d04 | 2007-09-13 18:10:37 +0000 | [diff] [blame] | 69 | ScopedDecl *SomeDecl = II->getFETokenInfo<ScopedDecl>(); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 70 | while (SomeDecl->getNext() != D) { |
| 71 | SomeDecl = SomeDecl->getNext(); |
| 72 | assert(SomeDecl && "Didn't find this decl on its identifier's chain!"); |
| 73 | } |
| 74 | SomeDecl->setNext(D->getNext()); |
| 75 | } |
| 76 | |
| 77 | // This will have to be revisited for C++: there we want to nest stuff in |
| 78 | // namespace decls etc. Even for C, we might want a top-level translation |
| 79 | // unit decl or something. |
| 80 | if (!CurFunctionDecl) |
| 81 | continue; |
| 82 | |
| 83 | // Chain this decl to the containing function, it now owns the memory for |
| 84 | // the decl. |
| 85 | D->setNext(CurFunctionDecl->getDeclChain()); |
| 86 | CurFunctionDecl->setDeclChain(D); |
| 87 | } |
| 88 | } |
| 89 | |
Fariborz Jahanian | 4cabdfc | 2007-10-12 19:38:20 +0000 | [diff] [blame] | 90 | /// LookupInterfaceDecl - Lookup interface declaration in the scope chain. |
| 91 | /// Return the first declaration found (which may or may not be a class |
Fariborz Jahanian | 3fe44e4 | 2007-10-12 19:53:08 +0000 | [diff] [blame] | 92 | /// declaration. Caller is responsible for handling the none-class case. |
Fariborz Jahanian | 4cabdfc | 2007-10-12 19:38:20 +0000 | [diff] [blame] | 93 | /// Bypassing the alias of a class by returning the aliased class. |
| 94 | ScopedDecl *Sema::LookupInterfaceDecl(IdentifierInfo *ClassName) { |
| 95 | ScopedDecl *IDecl; |
| 96 | // Scan up the scope chain looking for a decl that matches this identifier |
| 97 | // that is in the appropriate namespace. |
| 98 | for (IDecl = ClassName->getFETokenInfo<ScopedDecl>(); IDecl; |
| 99 | IDecl = IDecl->getNext()) |
| 100 | if (IDecl->getIdentifierNamespace() == Decl::IDNS_Ordinary) |
| 101 | break; |
| 102 | |
| 103 | if (ObjcCompatibleAliasDecl *ADecl = |
| 104 | dyn_cast_or_null<ObjcCompatibleAliasDecl>(IDecl)) |
| 105 | return ADecl->getClassInterface(); |
| 106 | return IDecl; |
| 107 | } |
| 108 | |
Fariborz Jahanian | 1b6351f | 2007-09-29 17:04:06 +0000 | [diff] [blame] | 109 | /// getObjcInterfaceDecl - Look up a for a class declaration in the scope. |
Fariborz Jahanian | 9d048ff | 2007-09-29 00:54:24 +0000 | [diff] [blame] | 110 | /// return 0 if one not found. |
Steve Naroff | 6a8a9a4 | 2007-10-02 20:01:56 +0000 | [diff] [blame] | 111 | ObjcInterfaceDecl *Sema::getObjCInterfaceDecl(IdentifierInfo *Id) { |
Fariborz Jahanian | 4cabdfc | 2007-10-12 19:38:20 +0000 | [diff] [blame] | 112 | ScopedDecl *IdDecl = LookupInterfaceDecl(Id); |
| 113 | return cast_or_null<ObjcInterfaceDecl>(IdDecl); |
Fariborz Jahanian | 9d048ff | 2007-09-29 00:54:24 +0000 | [diff] [blame] | 114 | } |
| 115 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 116 | /// LookupScopedDecl - Look up the inner-most declaration in the specified |
| 117 | /// namespace. |
Steve Naroff | c752d04 | 2007-09-13 18:10:37 +0000 | [diff] [blame] | 118 | ScopedDecl *Sema::LookupScopedDecl(IdentifierInfo *II, unsigned NSI, |
| 119 | SourceLocation IdLoc, Scope *S) { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 120 | if (II == 0) return 0; |
| 121 | Decl::IdentifierNamespace NS = (Decl::IdentifierNamespace)NSI; |
| 122 | |
| 123 | // Scan up the scope chain looking for a decl that matches this identifier |
| 124 | // that is in the appropriate namespace. This search should not take long, as |
| 125 | // shadowing of names is uncommon, and deep shadowing is extremely uncommon. |
Steve Naroff | c752d04 | 2007-09-13 18:10:37 +0000 | [diff] [blame] | 126 | for (ScopedDecl *D = II->getFETokenInfo<ScopedDecl>(); D; D = D->getNext()) |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 127 | if (D->getIdentifierNamespace() == NS) |
| 128 | return D; |
| 129 | |
| 130 | // If we didn't find a use of this identifier, and if the identifier |
| 131 | // corresponds to a compiler builtin, create the decl object for the builtin |
| 132 | // now, injecting it into translation unit scope, and return it. |
| 133 | if (NS == Decl::IDNS_Ordinary) { |
| 134 | // If this is a builtin on some other target, or if this builtin varies |
| 135 | // across targets (e.g. in type), emit a diagnostic and mark the translation |
| 136 | // unit non-portable for using it. |
| 137 | if (II->isNonPortableBuiltin()) { |
| 138 | // Only emit this diagnostic once for this builtin. |
| 139 | II->setNonPortableBuiltin(false); |
| 140 | Context.Target.DiagnoseNonPortability(IdLoc, |
| 141 | diag::port_target_builtin_use); |
| 142 | } |
| 143 | // If this is a builtin on this (or all) targets, create the decl. |
| 144 | if (unsigned BuiltinID = II->getBuiltinID()) |
| 145 | return LazilyCreateBuiltin(II, BuiltinID, S); |
| 146 | } |
| 147 | return 0; |
| 148 | } |
| 149 | |
Anders Carlsson | 7c50aca | 2007-10-15 20:28:48 +0000 | [diff] [blame] | 150 | void Sema::InitBuiltinVaListType() |
| 151 | { |
| 152 | if (!Context.getBuiltinVaListType().isNull()) |
| 153 | return; |
| 154 | |
| 155 | IdentifierInfo *VaIdent = &Context.Idents.get("__builtin_va_list"); |
| 156 | ScopedDecl *VaDecl = LookupScopedDecl(VaIdent, Decl::IDNS_Ordinary, |
| 157 | SourceLocation(), TUScope); |
Steve Naroff | 733002f | 2007-10-18 22:17:45 +0000 | [diff] [blame] | 158 | TypedefDecl *VaTypedef = cast<TypedefDecl>(VaDecl); |
Anders Carlsson | 7c50aca | 2007-10-15 20:28:48 +0000 | [diff] [blame] | 159 | Context.setBuiltinVaListType(Context.getTypedefType(VaTypedef)); |
| 160 | } |
| 161 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 162 | /// LazilyCreateBuiltin - The specified Builtin-ID was first used at file scope. |
| 163 | /// lazily create a decl for it. |
Chris Lattner | 22b73ba | 2007-10-10 23:42:28 +0000 | [diff] [blame] | 164 | ScopedDecl *Sema::LazilyCreateBuiltin(IdentifierInfo *II, unsigned bid, |
| 165 | Scope *S) { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 166 | Builtin::ID BID = (Builtin::ID)bid; |
| 167 | |
Anders Carlsson | 7c50aca | 2007-10-15 20:28:48 +0000 | [diff] [blame] | 168 | if (BID == Builtin::BI__builtin_va_start || |
Anders Carlsson | 793680e | 2007-10-12 23:56:29 +0000 | [diff] [blame] | 169 | BID == Builtin::BI__builtin_va_copy || |
Anders Carlsson | 7c50aca | 2007-10-15 20:28:48 +0000 | [diff] [blame] | 170 | BID == Builtin::BI__builtin_va_end) |
| 171 | InitBuiltinVaListType(); |
| 172 | |
Anders Carlsson | b2cf357 | 2007-10-11 01:00:40 +0000 | [diff] [blame] | 173 | QualType R = Context.BuiltinInfo.GetBuiltinType(BID, Context); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 174 | FunctionDecl *New = new FunctionDecl(SourceLocation(), II, R, |
Chris Lattner | 70c8b2e | 2007-08-26 04:02:13 +0000 | [diff] [blame] | 175 | FunctionDecl::Extern, false, 0); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 176 | |
| 177 | // Find translation-unit scope to insert this function into. |
Chris Lattner | 31e0572 | 2007-08-26 06:24:45 +0000 | [diff] [blame] | 178 | if (Scope *FnS = S->getFnParent()) |
| 179 | S = FnS->getParent(); // Skip all scopes in a function at once. |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 180 | while (S->getParent()) |
| 181 | S = S->getParent(); |
| 182 | S->AddDecl(New); |
| 183 | |
| 184 | // Add this decl to the end of the identifier info. |
Steve Naroff | c752d04 | 2007-09-13 18:10:37 +0000 | [diff] [blame] | 185 | if (ScopedDecl *LastDecl = II->getFETokenInfo<ScopedDecl>()) { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 186 | // Scan until we find the last (outermost) decl in the id chain. |
| 187 | while (LastDecl->getNext()) |
| 188 | LastDecl = LastDecl->getNext(); |
| 189 | // Insert before (outside) it. |
| 190 | LastDecl->setNext(New); |
| 191 | } else { |
| 192 | II->setFETokenInfo(New); |
| 193 | } |
| 194 | // Make sure clients iterating over decls see this. |
Steve Naroff | 1f64432 | 2007-11-28 22:54:11 +0000 | [diff] [blame] | 195 | AddTopLevelDecl(New); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 196 | |
| 197 | return New; |
| 198 | } |
| 199 | |
| 200 | /// MergeTypeDefDecl - We just parsed a typedef 'New' which has the same name |
| 201 | /// and scope as a previous declaration 'Old'. Figure out how to resolve this |
| 202 | /// situation, merging decls or emitting diagnostics as appropriate. |
| 203 | /// |
Steve Naroff | 8e74c93 | 2007-09-13 21:41:19 +0000 | [diff] [blame] | 204 | TypedefDecl *Sema::MergeTypeDefDecl(TypedefDecl *New, ScopedDecl *OldD) { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 205 | // Verify the old decl was also a typedef. |
| 206 | TypedefDecl *Old = dyn_cast<TypedefDecl>(OldD); |
| 207 | if (!Old) { |
| 208 | Diag(New->getLocation(), diag::err_redefinition_different_kind, |
| 209 | New->getName()); |
| 210 | Diag(OldD->getLocation(), diag::err_previous_definition); |
| 211 | return New; |
| 212 | } |
| 213 | |
Steve Naroff | 8ee529b | 2007-10-31 18:42:27 +0000 | [diff] [blame] | 214 | // Allow multiple definitions for ObjC built-in typedefs. |
| 215 | // FIXME: Verify the underlying types are equivalent! |
| 216 | if (PP.getLangOptions().ObjC1 && isBuiltinObjcType(New)) |
| 217 | return Old; |
| 218 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 219 | // TODO: CHECK FOR CONFLICTS, multiple decls with same name in one scope. |
| 220 | // TODO: This is totally simplistic. It should handle merging functions |
| 221 | // together etc, merging extern int X; int X; ... |
| 222 | Diag(New->getLocation(), diag::err_redefinition, New->getName()); |
| 223 | Diag(Old->getLocation(), diag::err_previous_definition); |
| 224 | return New; |
| 225 | } |
| 226 | |
| 227 | /// MergeFunctionDecl - We just parsed a function 'New' which has the same name |
| 228 | /// and scope as a previous declaration 'Old'. Figure out how to resolve this |
| 229 | /// situation, merging decls or emitting diagnostics as appropriate. |
| 230 | /// |
Steve Naroff | 8e74c93 | 2007-09-13 21:41:19 +0000 | [diff] [blame] | 231 | FunctionDecl *Sema::MergeFunctionDecl(FunctionDecl *New, ScopedDecl *OldD) { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 232 | // Verify the old decl was also a function. |
| 233 | FunctionDecl *Old = dyn_cast<FunctionDecl>(OldD); |
| 234 | if (!Old) { |
| 235 | Diag(New->getLocation(), diag::err_redefinition_different_kind, |
| 236 | New->getName()); |
| 237 | Diag(OldD->getLocation(), diag::err_previous_definition); |
| 238 | return New; |
| 239 | } |
| 240 | |
Chris Lattner | 5519644 | 2007-11-20 19:04:50 +0000 | [diff] [blame] | 241 | QualType OldQType = Old->getCanonicalType(); |
| 242 | QualType NewQType = New->getCanonicalType(); |
| 243 | |
| 244 | // This is not right, but it's a start. |
| 245 | // If Old is a function prototype with no defined arguments we only compare |
| 246 | // the return type; If arguments are defined on the prototype we validate the |
| 247 | // entire function type. |
| 248 | // FIXME: We should link up decl objects here. |
| 249 | if (Old->getBody() == 0) { |
| 250 | if (OldQType.getTypePtr()->getTypeClass() == Type::FunctionNoProto && |
| 251 | Old->getResultType() == New->getResultType()) |
| 252 | return New; |
| 253 | if (OldQType == NewQType) |
| 254 | return New; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 255 | } |
Chris Lattner | e3995fe | 2007-11-06 06:07:26 +0000 | [diff] [blame] | 256 | |
Chris Lattner | 5519644 | 2007-11-20 19:04:50 +0000 | [diff] [blame] | 257 | if (New->getBody() == 0 && OldQType == NewQType) { |
Chris Lattner | e3995fe | 2007-11-06 06:07:26 +0000 | [diff] [blame] | 258 | return 0; |
| 259 | } |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 260 | |
| 261 | // TODO: CHECK FOR CONFLICTS, multiple decls with same name in one scope. |
| 262 | // TODO: This is totally simplistic. It should handle merging functions |
| 263 | // together etc, merging extern int X; int X; ... |
| 264 | Diag(New->getLocation(), diag::err_redefinition, New->getName()); |
| 265 | Diag(Old->getLocation(), diag::err_previous_definition); |
| 266 | return New; |
| 267 | } |
| 268 | |
Chris Lattner | fcc2d26 | 2007-11-06 04:28:31 +0000 | [diff] [blame] | 269 | |
| 270 | /// hasUndefinedLength - Used by equivalentArrayTypes to determine whether the |
| 271 | /// the outermost VariableArrayType has no size defined. |
| 272 | static bool hasUndefinedLength(const ArrayType *Array) { |
| 273 | const VariableArrayType *VAT = Array->getAsVariableArrayType(); |
| 274 | return VAT && !VAT->getSizeExpr(); |
| 275 | } |
| 276 | |
| 277 | /// equivalentArrayTypes - Used to determine whether two array types are |
| 278 | /// equivalent. |
| 279 | /// We need to check this explicitly as an incomplete array definition is |
| 280 | /// considered a VariableArrayType, so will not match a complete array |
| 281 | /// definition that would be otherwise equivalent. |
| 282 | static bool areEquivalentArrayTypes(QualType NewQType, QualType OldQType) { |
| 283 | const ArrayType *NewAT = NewQType->getAsArrayType(); |
| 284 | const ArrayType *OldAT = OldQType->getAsArrayType(); |
| 285 | |
| 286 | if (!NewAT || !OldAT) |
| 287 | return false; |
| 288 | |
| 289 | // If either (or both) array types in incomplete we need to strip off the |
| 290 | // outer VariableArrayType. Once the outer VAT is removed the remaining |
| 291 | // types must be identical if the array types are to be considered |
| 292 | // equivalent. |
| 293 | // eg. int[][1] and int[1][1] become |
| 294 | // VAT(null, CAT(1, int)) and CAT(1, CAT(1, int)) |
| 295 | // removing the outermost VAT gives |
| 296 | // CAT(1, int) and CAT(1, int) |
| 297 | // which are equal, therefore the array types are equivalent. |
| 298 | if (hasUndefinedLength(NewAT) || hasUndefinedLength(OldAT)) { |
| 299 | if (NewAT->getIndexTypeQualifier() != OldAT->getIndexTypeQualifier()) |
| 300 | return false; |
| 301 | NewQType = NewAT->getElementType(); |
| 302 | OldQType = OldAT->getElementType(); |
| 303 | } |
| 304 | |
| 305 | return NewQType == OldQType; |
| 306 | } |
| 307 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 308 | /// MergeVarDecl - We just parsed a variable 'New' which has the same name |
| 309 | /// and scope as a previous declaration 'Old'. Figure out how to resolve this |
| 310 | /// situation, merging decls or emitting diagnostics as appropriate. |
| 311 | /// |
| 312 | /// FIXME: Need to carefully consider tentative definition rules (C99 6.9.2p2). |
| 313 | /// For example, we incorrectly complain about i1, i4 from C99 6.9.2p4. |
| 314 | /// |
Steve Naroff | 8e74c93 | 2007-09-13 21:41:19 +0000 | [diff] [blame] | 315 | VarDecl *Sema::MergeVarDecl(VarDecl *New, ScopedDecl *OldD) { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 316 | // Verify the old decl was also a variable. |
| 317 | VarDecl *Old = dyn_cast<VarDecl>(OldD); |
| 318 | if (!Old) { |
| 319 | Diag(New->getLocation(), diag::err_redefinition_different_kind, |
| 320 | New->getName()); |
| 321 | Diag(OldD->getLocation(), diag::err_previous_definition); |
| 322 | return New; |
| 323 | } |
Steve Naroff | fb22d96 | 2007-08-30 01:06:46 +0000 | [diff] [blame] | 324 | FileVarDecl *OldFSDecl = dyn_cast<FileVarDecl>(Old); |
| 325 | FileVarDecl *NewFSDecl = dyn_cast<FileVarDecl>(New); |
| 326 | bool OldIsTentative = false; |
| 327 | |
| 328 | if (OldFSDecl && NewFSDecl) { // C99 6.9.2 |
| 329 | // Handle C "tentative" external object definitions. FIXME: finish! |
| 330 | if (!OldFSDecl->getInit() && |
| 331 | (OldFSDecl->getStorageClass() == VarDecl::None || |
| 332 | OldFSDecl->getStorageClass() == VarDecl::Static)) |
| 333 | OldIsTentative = true; |
| 334 | } |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 335 | // Verify the types match. |
Chris Lattner | fcc2d26 | 2007-11-06 04:28:31 +0000 | [diff] [blame] | 336 | if (Old->getCanonicalType() != New->getCanonicalType() && |
| 337 | !areEquivalentArrayTypes(New->getCanonicalType(), Old->getCanonicalType())) { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 338 | Diag(New->getLocation(), diag::err_redefinition, New->getName()); |
| 339 | Diag(Old->getLocation(), diag::err_previous_definition); |
| 340 | return New; |
| 341 | } |
| 342 | // We've verified the types match, now check if Old is "extern". |
| 343 | if (Old->getStorageClass() != VarDecl::Extern) { |
| 344 | Diag(New->getLocation(), diag::err_redefinition, New->getName()); |
| 345 | Diag(Old->getLocation(), diag::err_previous_definition); |
| 346 | } |
| 347 | return New; |
| 348 | } |
| 349 | |
| 350 | /// ParsedFreeStandingDeclSpec - This method is invoked when a declspec with |
| 351 | /// no declarator (e.g. "struct foo;") is parsed. |
| 352 | Sema::DeclTy *Sema::ParsedFreeStandingDeclSpec(Scope *S, DeclSpec &DS) { |
| 353 | // TODO: emit error on 'int;' or 'const enum foo;'. |
| 354 | // TODO: emit error on 'typedef int;' |
| 355 | // if (!DS.isMissingDeclaratorOk()) Diag(...); |
| 356 | |
Steve Naroff | 9219928 | 2007-11-17 21:37:36 +0000 | [diff] [blame] | 357 | return dyn_cast_or_null<TagDecl>(static_cast<Decl *>(DS.getTypeRep())); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 358 | } |
| 359 | |
Anders Carlsson | 1a86b33 | 2007-10-17 00:52:43 +0000 | [diff] [blame] | 360 | bool Sema::CheckSingleInitializer(Expr *&Init, bool isStatic, |
| 361 | QualType DeclType) { |
Chris Lattner | f471f2e | 2007-11-27 21:21:35 +0000 | [diff] [blame] | 362 | SourceLocation loc = Init->getLocStart(); |
Anders Carlsson | 1a86b33 | 2007-10-17 00:52:43 +0000 | [diff] [blame] | 363 | |
| 364 | // FIXME: Remove the isReferenceType check and handle assignment |
| 365 | // to a reference. |
| 366 | if (isStatic && !DeclType->isReferenceType() && |
| 367 | !Init->isConstantExpr(Context, &loc)) { // C99 6.7.8p4. |
| 368 | Diag(loc, diag::err_init_element_not_constant, Init->getSourceRange()); |
| 369 | return true; |
| 370 | } |
| 371 | |
Steve Naroff | f009063 | 2007-09-02 02:04:30 +0000 | [diff] [blame] | 372 | AssignmentCheckResult result; |
Steve Naroff | f009063 | 2007-09-02 02:04:30 +0000 | [diff] [blame] | 373 | // Get the type before calling CheckSingleAssignmentConstraints(), since |
| 374 | // it can promote the expression. |
| 375 | QualType rhsType = Init->getType(); |
| 376 | |
| 377 | result = CheckSingleAssignmentConstraints(DeclType, Init); |
| 378 | |
| 379 | // decode the result (notice that extensions still return a type). |
| 380 | switch (result) { |
| 381 | case Compatible: |
| 382 | break; |
| 383 | case Incompatible: |
Steve Naroff | 6f9f307 | 2007-09-02 15:34:30 +0000 | [diff] [blame] | 384 | // FIXME: tighten up this check which should allow: |
| 385 | // char s[] = "abc", which is identical to char s[] = { 'a', 'b', 'c' }; |
| 386 | if (rhsType == Context.getPointerType(Context.CharTy)) |
| 387 | break; |
Steve Naroff | f009063 | 2007-09-02 02:04:30 +0000 | [diff] [blame] | 388 | Diag(loc, diag::err_typecheck_assign_incompatible, |
| 389 | DeclType.getAsString(), rhsType.getAsString(), |
| 390 | Init->getSourceRange()); |
| 391 | return true; |
| 392 | case PointerFromInt: |
Steve Naroff | 529a4ad | 2007-11-27 17:58:44 +0000 | [diff] [blame] | 393 | Diag(loc, diag::ext_typecheck_assign_pointer_int, |
| 394 | DeclType.getAsString(), rhsType.getAsString(), |
| 395 | Init->getSourceRange()); |
Steve Naroff | f009063 | 2007-09-02 02:04:30 +0000 | [diff] [blame] | 396 | break; |
| 397 | case IntFromPointer: |
| 398 | Diag(loc, diag::ext_typecheck_assign_pointer_int, |
| 399 | DeclType.getAsString(), rhsType.getAsString(), |
| 400 | Init->getSourceRange()); |
| 401 | break; |
| 402 | case IncompatiblePointer: |
| 403 | Diag(loc, diag::ext_typecheck_assign_incompatible_pointer, |
| 404 | DeclType.getAsString(), rhsType.getAsString(), |
| 405 | Init->getSourceRange()); |
| 406 | break; |
| 407 | case CompatiblePointerDiscardsQualifiers: |
| 408 | Diag(loc, diag::ext_typecheck_assign_discards_qualifiers, |
| 409 | DeclType.getAsString(), rhsType.getAsString(), |
| 410 | Init->getSourceRange()); |
| 411 | break; |
| 412 | } |
| 413 | return false; |
| 414 | } |
| 415 | |
Steve Naroff | 9e8925e | 2007-09-04 14:36:54 +0000 | [diff] [blame] | 416 | bool Sema::CheckInitExpr(Expr *expr, InitListExpr *IList, unsigned slot, |
| 417 | bool isStatic, QualType ElementType) { |
Steve Naroff | 371227d | 2007-09-04 02:20:04 +0000 | [diff] [blame] | 418 | SourceLocation loc; |
Steve Naroff | 9e8925e | 2007-09-04 14:36:54 +0000 | [diff] [blame] | 419 | Expr *savExpr = expr; // Might be promoted by CheckSingleInitializer. |
Steve Naroff | 371227d | 2007-09-04 02:20:04 +0000 | [diff] [blame] | 420 | |
| 421 | if (isStatic && !expr->isConstantExpr(Context, &loc)) { // C99 6.7.8p4. |
| 422 | Diag(loc, diag::err_init_element_not_constant, expr->getSourceRange()); |
| 423 | return true; |
Anders Carlsson | 1a86b33 | 2007-10-17 00:52:43 +0000 | [diff] [blame] | 424 | } else if (CheckSingleInitializer(expr, isStatic, ElementType)) { |
Steve Naroff | 371227d | 2007-09-04 02:20:04 +0000 | [diff] [blame] | 425 | return true; // types weren't compatible. |
| 426 | } |
Steve Naroff | 9e8925e | 2007-09-04 14:36:54 +0000 | [diff] [blame] | 427 | if (savExpr != expr) // The type was promoted, update initializer list. |
| 428 | IList->setInit(slot, expr); |
Steve Naroff | 371227d | 2007-09-04 02:20:04 +0000 | [diff] [blame] | 429 | return false; |
| 430 | } |
| 431 | |
| 432 | void Sema::CheckVariableInitList(QualType DeclType, InitListExpr *IList, |
| 433 | QualType ElementType, bool isStatic, |
| 434 | int &nInitializers, bool &hadError) { |
Steve Naroff | 6f9f307 | 2007-09-02 15:34:30 +0000 | [diff] [blame] | 435 | for (unsigned i = 0; i < IList->getNumInits(); i++) { |
| 436 | Expr *expr = IList->getInit(i); |
| 437 | |
Steve Naroff | 371227d | 2007-09-04 02:20:04 +0000 | [diff] [blame] | 438 | if (InitListExpr *InitList = dyn_cast<InitListExpr>(expr)) { |
| 439 | if (const ConstantArrayType *CAT = DeclType->getAsConstantArrayType()) { |
Steve Naroff | 7cf8c44 | 2007-09-04 21:13:33 +0000 | [diff] [blame] | 440 | int maxElements = CAT->getMaximumElements(); |
Steve Naroff | 371227d | 2007-09-04 02:20:04 +0000 | [diff] [blame] | 441 | CheckConstantInitList(DeclType, InitList, ElementType, isStatic, |
| 442 | maxElements, hadError); |
Steve Naroff | 6f9f307 | 2007-09-02 15:34:30 +0000 | [diff] [blame] | 443 | } |
Steve Naroff | 371227d | 2007-09-04 02:20:04 +0000 | [diff] [blame] | 444 | } else { |
Steve Naroff | 9e8925e | 2007-09-04 14:36:54 +0000 | [diff] [blame] | 445 | hadError = CheckInitExpr(expr, IList, i, isStatic, ElementType); |
Steve Naroff | 6f9f307 | 2007-09-02 15:34:30 +0000 | [diff] [blame] | 446 | } |
Steve Naroff | 371227d | 2007-09-04 02:20:04 +0000 | [diff] [blame] | 447 | nInitializers++; |
| 448 | } |
| 449 | return; |
| 450 | } |
| 451 | |
| 452 | // FIXME: Doesn't deal with arrays of structures yet. |
| 453 | void Sema::CheckConstantInitList(QualType DeclType, InitListExpr *IList, |
| 454 | QualType ElementType, bool isStatic, |
| 455 | int &totalInits, bool &hadError) { |
| 456 | int maxElementsAtThisLevel = 0; |
| 457 | int nInitsAtLevel = 0; |
| 458 | |
| 459 | if (const ConstantArrayType *CAT = DeclType->getAsConstantArrayType()) { |
| 460 | // We have a constant array type, compute maxElements *at this level*. |
Steve Naroff | 7cf8c44 | 2007-09-04 21:13:33 +0000 | [diff] [blame] | 461 | maxElementsAtThisLevel = CAT->getMaximumElements(); |
| 462 | // Set DeclType, used below to recurse (for multi-dimensional arrays). |
| 463 | DeclType = CAT->getElementType(); |
Steve Naroff | 371227d | 2007-09-04 02:20:04 +0000 | [diff] [blame] | 464 | } else if (DeclType->isScalarType()) { |
| 465 | Diag(IList->getLocStart(), diag::warn_braces_around_scalar_init, |
| 466 | IList->getSourceRange()); |
| 467 | maxElementsAtThisLevel = 1; |
| 468 | } |
| 469 | // The empty init list "{ }" is treated specially below. |
| 470 | unsigned numInits = IList->getNumInits(); |
| 471 | if (numInits) { |
| 472 | for (unsigned i = 0; i < numInits; i++) { |
| 473 | Expr *expr = IList->getInit(i); |
| 474 | |
| 475 | if (InitListExpr *InitList = dyn_cast<InitListExpr>(expr)) { |
| 476 | CheckConstantInitList(DeclType, InitList, ElementType, isStatic, |
| 477 | totalInits, hadError); |
| 478 | } else { |
Steve Naroff | 9e8925e | 2007-09-04 14:36:54 +0000 | [diff] [blame] | 479 | hadError = CheckInitExpr(expr, IList, i, isStatic, ElementType); |
Steve Naroff | 371227d | 2007-09-04 02:20:04 +0000 | [diff] [blame] | 480 | nInitsAtLevel++; // increment the number of initializers at this level. |
| 481 | totalInits--; // decrement the total number of initializers. |
| 482 | |
| 483 | // Check if we have space for another initializer. |
| 484 | if ((nInitsAtLevel > maxElementsAtThisLevel) || (totalInits < 0)) |
| 485 | Diag(expr->getLocStart(), diag::warn_excess_initializers, |
| 486 | expr->getSourceRange()); |
| 487 | } |
| 488 | } |
| 489 | if (nInitsAtLevel < maxElementsAtThisLevel) // fill the remaining elements. |
| 490 | totalInits -= (maxElementsAtThisLevel - nInitsAtLevel); |
| 491 | } else { |
| 492 | // we have an initializer list with no elements. |
| 493 | totalInits -= maxElementsAtThisLevel; |
| 494 | if (totalInits < 0) |
| 495 | Diag(IList->getLocStart(), diag::warn_excess_initializers, |
| 496 | IList->getSourceRange()); |
Steve Naroff | 6f9f307 | 2007-09-02 15:34:30 +0000 | [diff] [blame] | 497 | } |
Steve Naroff | d35005e | 2007-09-03 01:24:23 +0000 | [diff] [blame] | 498 | return; |
Steve Naroff | 6f9f307 | 2007-09-02 15:34:30 +0000 | [diff] [blame] | 499 | } |
| 500 | |
Steve Naroff | 9e8925e | 2007-09-04 14:36:54 +0000 | [diff] [blame] | 501 | bool Sema::CheckInitializer(Expr *&Init, QualType &DeclType, bool isStatic) { |
Steve Naroff | f009063 | 2007-09-02 02:04:30 +0000 | [diff] [blame] | 502 | InitListExpr *InitList = dyn_cast<InitListExpr>(Init); |
Steve Naroff | d35005e | 2007-09-03 01:24:23 +0000 | [diff] [blame] | 503 | if (!InitList) |
Anders Carlsson | 1a86b33 | 2007-10-17 00:52:43 +0000 | [diff] [blame] | 504 | return CheckSingleInitializer(Init, isStatic, DeclType); |
| 505 | |
Steve Naroff | f009063 | 2007-09-02 02:04:30 +0000 | [diff] [blame] | 506 | // We have an InitListExpr, make sure we set the type. |
| 507 | Init->setType(DeclType); |
Steve Naroff | d35005e | 2007-09-03 01:24:23 +0000 | [diff] [blame] | 508 | |
| 509 | bool hadError = false; |
Steve Naroff | 6f9f307 | 2007-09-02 15:34:30 +0000 | [diff] [blame] | 510 | |
Steve Naroff | 38374b0 | 2007-09-02 20:30:18 +0000 | [diff] [blame] | 511 | // C99 6.7.8p3: The type of the entity to be initialized shall be an array |
| 512 | // of unknown size ("[]") or an object type that is not a variable array type. |
| 513 | if (const VariableArrayType *VAT = DeclType->getAsVariableArrayType()) { |
| 514 | Expr *expr = VAT->getSizeExpr(); |
Steve Naroff | d35005e | 2007-09-03 01:24:23 +0000 | [diff] [blame] | 515 | if (expr) |
| 516 | return Diag(expr->getLocStart(), diag::err_variable_object_no_init, |
| 517 | expr->getSourceRange()); |
| 518 | |
Steve Naroff | 7cf8c44 | 2007-09-04 21:13:33 +0000 | [diff] [blame] | 519 | // We have a VariableArrayType with unknown size. Note that only the first |
| 520 | // array can have unknown size. For example, "int [][]" is illegal. |
Steve Naroff | 371227d | 2007-09-04 02:20:04 +0000 | [diff] [blame] | 521 | int numInits = 0; |
Steve Naroff | 7cf8c44 | 2007-09-04 21:13:33 +0000 | [diff] [blame] | 522 | CheckVariableInitList(VAT->getElementType(), InitList, VAT->getBaseType(), |
| 523 | isStatic, numInits, hadError); |
Steve Naroff | d35005e | 2007-09-03 01:24:23 +0000 | [diff] [blame] | 524 | if (!hadError) { |
| 525 | // Return a new array type from the number of initializers (C99 6.7.8p22). |
| 526 | llvm::APSInt ConstVal(32); |
Steve Naroff | 371227d | 2007-09-04 02:20:04 +0000 | [diff] [blame] | 527 | ConstVal = numInits; |
Steve Naroff | fd8b4a4 | 2007-10-18 03:27:23 +0000 | [diff] [blame] | 528 | DeclType = Context.getConstantArrayType(VAT->getElementType(), ConstVal, |
Steve Naroff | d35005e | 2007-09-03 01:24:23 +0000 | [diff] [blame] | 529 | ArrayType::Normal, 0); |
| 530 | } |
| 531 | return hadError; |
| 532 | } |
| 533 | if (const ConstantArrayType *CAT = DeclType->getAsConstantArrayType()) { |
Steve Naroff | 7cf8c44 | 2007-09-04 21:13:33 +0000 | [diff] [blame] | 534 | int maxElements = CAT->getMaximumElements(); |
| 535 | CheckConstantInitList(DeclType, InitList, CAT->getBaseType(), |
| 536 | isStatic, maxElements, hadError); |
Steve Naroff | d35005e | 2007-09-03 01:24:23 +0000 | [diff] [blame] | 537 | return hadError; |
| 538 | } |
Steve Naroff | 371227d | 2007-09-04 02:20:04 +0000 | [diff] [blame] | 539 | if (DeclType->isScalarType()) { // C99 6.7.8p11: Allow "int x = { 1, 2 };" |
| 540 | int maxElements = 1; |
| 541 | CheckConstantInitList(DeclType, InitList, DeclType, isStatic, maxElements, |
| 542 | hadError); |
Steve Naroff | d35005e | 2007-09-03 01:24:23 +0000 | [diff] [blame] | 543 | return hadError; |
Steve Naroff | 38374b0 | 2007-09-02 20:30:18 +0000 | [diff] [blame] | 544 | } |
| 545 | // FIXME: Handle struct/union types. |
Steve Naroff | d35005e | 2007-09-03 01:24:23 +0000 | [diff] [blame] | 546 | return hadError; |
Steve Naroff | f009063 | 2007-09-02 02:04:30 +0000 | [diff] [blame] | 547 | } |
| 548 | |
Fariborz Jahanian | 306d68f | 2007-11-08 23:49:49 +0000 | [diff] [blame] | 549 | Sema::DeclTy * |
Steve Naroff | 08d92e4 | 2007-09-15 18:49:24 +0000 | [diff] [blame] | 550 | Sema::ActOnDeclarator(Scope *S, Declarator &D, DeclTy *lastDecl) { |
Steve Naroff | 9474504 | 2007-09-13 23:52:58 +0000 | [diff] [blame] | 551 | ScopedDecl *LastDeclarator = dyn_cast_or_null<ScopedDecl>((Decl *)lastDecl); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 552 | IdentifierInfo *II = D.getIdentifier(); |
| 553 | |
Chris Lattner | e80a59c | 2007-07-25 00:24:17 +0000 | [diff] [blame] | 554 | // All of these full declarators require an identifier. If it doesn't have |
| 555 | // one, the ParsedFreeStandingDeclSpec action should be used. |
| 556 | if (II == 0) { |
Chris Lattner | 311ff02 | 2007-10-16 22:36:42 +0000 | [diff] [blame] | 557 | Diag(D.getDeclSpec().getSourceRange().getBegin(), |
Chris Lattner | 98e0863 | 2007-08-28 06:17:15 +0000 | [diff] [blame] | 558 | diag::err_declarator_need_ident, |
Chris Lattner | e80a59c | 2007-07-25 00:24:17 +0000 | [diff] [blame] | 559 | D.getDeclSpec().getSourceRange(), D.getSourceRange()); |
| 560 | return 0; |
| 561 | } |
| 562 | |
Chris Lattner | 31e0572 | 2007-08-26 06:24:45 +0000 | [diff] [blame] | 563 | // The scope passed in may not be a decl scope. Zip up the scope tree until |
| 564 | // we find one that is. |
| 565 | while ((S->getFlags() & Scope::DeclScope) == 0) |
| 566 | S = S->getParent(); |
| 567 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 568 | // See if this is a redefinition of a variable in the same scope. |
Steve Naroff | c752d04 | 2007-09-13 18:10:37 +0000 | [diff] [blame] | 569 | ScopedDecl *PrevDecl = LookupScopedDecl(II, Decl::IDNS_Ordinary, |
| 570 | D.getIdentifierLoc(), S); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 571 | if (PrevDecl && !S->isDeclScope(PrevDecl)) |
| 572 | PrevDecl = 0; // If in outer scope, it isn't the same thing. |
| 573 | |
Steve Naroff | c752d04 | 2007-09-13 18:10:37 +0000 | [diff] [blame] | 574 | ScopedDecl *New; |
Steve Naroff | 5912a35 | 2007-08-28 20:14:24 +0000 | [diff] [blame] | 575 | bool InvalidDecl = false; |
| 576 | |
Chris Lattner | 41af093 | 2007-11-14 06:34:38 +0000 | [diff] [blame] | 577 | QualType R = GetTypeForDeclarator(D, S); |
| 578 | assert(!R.isNull() && "GetTypeForDeclarator() returned null type"); |
| 579 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 580 | if (D.getDeclSpec().getStorageClassSpec() == DeclSpec::SCS_typedef) { |
Chris Lattner | 41af093 | 2007-11-14 06:34:38 +0000 | [diff] [blame] | 581 | TypedefDecl *NewTD = ParseTypedefDecl(S, D, R, LastDeclarator); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 582 | if (!NewTD) return 0; |
| 583 | |
| 584 | // Handle attributes prior to checking for duplicates in MergeVarDecl |
| 585 | HandleDeclAttributes(NewTD, D.getDeclSpec().getAttributes(), |
| 586 | D.getAttributes()); |
| 587 | // Merge the decl with the existing one if appropriate. |
| 588 | if (PrevDecl) { |
| 589 | NewTD = MergeTypeDefDecl(NewTD, PrevDecl); |
| 590 | if (NewTD == 0) return 0; |
| 591 | } |
| 592 | New = NewTD; |
| 593 | if (S->getParent() == 0) { |
| 594 | // C99 6.7.7p2: If a typedef name specifies a variably modified type |
| 595 | // then it shall have block scope. |
Steve Naroff | d7444aa | 2007-08-31 17:20:07 +0000 | [diff] [blame] | 596 | if (const VariableArrayType *VAT = |
| 597 | NewTD->getUnderlyingType()->getAsVariablyModifiedType()) { |
| 598 | Diag(D.getIdentifierLoc(), diag::err_typecheck_illegal_vla, |
| 599 | VAT->getSizeExpr()->getSourceRange()); |
| 600 | InvalidDecl = true; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 601 | } |
| 602 | } |
Chris Lattner | 41af093 | 2007-11-14 06:34:38 +0000 | [diff] [blame] | 603 | } else if (R.getTypePtr()->isFunctionType()) { |
Chris Lattner | 271f1a6 | 2007-09-27 15:15:46 +0000 | [diff] [blame] | 604 | FunctionDecl::StorageClass SC = FunctionDecl::None; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 605 | switch (D.getDeclSpec().getStorageClassSpec()) { |
| 606 | default: assert(0 && "Unknown storage class!"); |
| 607 | case DeclSpec::SCS_auto: |
| 608 | case DeclSpec::SCS_register: |
| 609 | Diag(D.getIdentifierLoc(), diag::err_typecheck_sclass_func, |
| 610 | R.getAsString()); |
Steve Naroff | 5912a35 | 2007-08-28 20:14:24 +0000 | [diff] [blame] | 611 | InvalidDecl = true; |
| 612 | break; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 613 | case DeclSpec::SCS_unspecified: SC = FunctionDecl::None; break; |
| 614 | case DeclSpec::SCS_extern: SC = FunctionDecl::Extern; break; |
| 615 | case DeclSpec::SCS_static: SC = FunctionDecl::Static; break; |
| 616 | } |
| 617 | |
| 618 | FunctionDecl *NewFD = new FunctionDecl(D.getIdentifierLoc(), II, R, SC, |
Chris Lattner | 70c8b2e | 2007-08-26 04:02:13 +0000 | [diff] [blame] | 619 | D.getDeclSpec().isInlineSpecified(), |
Nate Begeman | 1b4e251 | 2007-11-13 22:14:47 +0000 | [diff] [blame] | 620 | LastDeclarator, |
| 621 | D.getDeclSpec().getAttributes()); |
| 622 | |
| 623 | // Transfer ownership of DeclSpec attributes to FunctionDecl |
| 624 | D.getDeclSpec().clearAttributes(); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 625 | |
| 626 | // Merge the decl with the existing one if appropriate. |
| 627 | if (PrevDecl) { |
| 628 | NewFD = MergeFunctionDecl(NewFD, PrevDecl); |
| 629 | if (NewFD == 0) return 0; |
| 630 | } |
| 631 | New = NewFD; |
| 632 | } else { |
Fariborz Jahanian | e7f64cc | 2007-10-12 22:10:42 +0000 | [diff] [blame] | 633 | if (R.getTypePtr()->isObjcInterfaceType()) { |
| 634 | Diag(D.getIdentifierLoc(), diag::err_statically_allocated_object, |
| 635 | D.getIdentifier()->getName()); |
| 636 | InvalidDecl = true; |
| 637 | } |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 638 | |
| 639 | VarDecl *NewVD; |
| 640 | VarDecl::StorageClass SC; |
| 641 | switch (D.getDeclSpec().getStorageClassSpec()) { |
| 642 | default: assert(0 && "Unknown storage class!"); |
| 643 | case DeclSpec::SCS_unspecified: SC = VarDecl::None; break; |
| 644 | case DeclSpec::SCS_extern: SC = VarDecl::Extern; break; |
| 645 | case DeclSpec::SCS_static: SC = VarDecl::Static; break; |
| 646 | case DeclSpec::SCS_auto: SC = VarDecl::Auto; break; |
| 647 | case DeclSpec::SCS_register: SC = VarDecl::Register; break; |
| 648 | } |
| 649 | if (S->getParent() == 0) { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 650 | // C99 6.9p2: The storage-class specifiers auto and register shall not |
| 651 | // appear in the declaration specifiers in an external declaration. |
| 652 | if (SC == VarDecl::Auto || SC == VarDecl::Register) { |
| 653 | Diag(D.getIdentifierLoc(), diag::err_typecheck_sclass_fscope, |
| 654 | R.getAsString()); |
Steve Naroff | 53a3234 | 2007-08-28 18:45:29 +0000 | [diff] [blame] | 655 | InvalidDecl = true; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 656 | } |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 657 | NewVD = new FileVarDecl(D.getIdentifierLoc(), II, R, SC, LastDeclarator); |
Steve Naroff | f009063 | 2007-09-02 02:04:30 +0000 | [diff] [blame] | 658 | } else { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 659 | NewVD = new BlockVarDecl(D.getIdentifierLoc(), II, R, SC, LastDeclarator); |
Steve Naroff | 53a3234 | 2007-08-28 18:45:29 +0000 | [diff] [blame] | 660 | } |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 661 | // Handle attributes prior to checking for duplicates in MergeVarDecl |
| 662 | HandleDeclAttributes(NewVD, D.getDeclSpec().getAttributes(), |
| 663 | D.getAttributes()); |
| 664 | |
| 665 | // Merge the decl with the existing one if appropriate. |
| 666 | if (PrevDecl) { |
| 667 | NewVD = MergeVarDecl(NewVD, PrevDecl); |
| 668 | if (NewVD == 0) return 0; |
| 669 | } |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 670 | New = NewVD; |
| 671 | } |
| 672 | |
| 673 | // If this has an identifier, add it to the scope stack. |
| 674 | if (II) { |
Steve Naroff | c752d04 | 2007-09-13 18:10:37 +0000 | [diff] [blame] | 675 | New->setNext(II->getFETokenInfo<ScopedDecl>()); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 676 | II->setFETokenInfo(New); |
| 677 | S->AddDecl(New); |
| 678 | } |
| 679 | |
| 680 | if (S->getParent() == 0) |
Steve Naroff | 1f64432 | 2007-11-28 22:54:11 +0000 | [diff] [blame] | 681 | AddTopLevelDecl(New); |
Steve Naroff | 5912a35 | 2007-08-28 20:14:24 +0000 | [diff] [blame] | 682 | |
| 683 | // If any semantic error occurred, mark the decl as invalid. |
| 684 | if (D.getInvalidType() || InvalidDecl) |
| 685 | New->setInvalidDecl(); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 686 | |
| 687 | return New; |
| 688 | } |
| 689 | |
Steve Naroff | bb20469 | 2007-09-12 14:07:44 +0000 | [diff] [blame] | 690 | void Sema::AddInitializerToDecl(DeclTy *dcl, ExprTy *init) { |
Steve Naroff | 410e3e2 | 2007-09-12 20:13:48 +0000 | [diff] [blame] | 691 | Decl *RealDecl = static_cast<Decl *>(dcl); |
Steve Naroff | bb20469 | 2007-09-12 14:07:44 +0000 | [diff] [blame] | 692 | Expr *Init = static_cast<Expr *>(init); |
Chris Lattner | 9a11b9a | 2007-10-19 20:10:30 +0000 | [diff] [blame] | 693 | assert(Init && "missing initializer"); |
Steve Naroff | bb20469 | 2007-09-12 14:07:44 +0000 | [diff] [blame] | 694 | |
Chris Lattner | 9a11b9a | 2007-10-19 20:10:30 +0000 | [diff] [blame] | 695 | // If there is no declaration, there was an error parsing it. Just ignore |
| 696 | // the initializer. |
| 697 | if (RealDecl == 0) { |
| 698 | delete Init; |
| 699 | return; |
| 700 | } |
Steve Naroff | bb20469 | 2007-09-12 14:07:44 +0000 | [diff] [blame] | 701 | |
Steve Naroff | 410e3e2 | 2007-09-12 20:13:48 +0000 | [diff] [blame] | 702 | VarDecl *VDecl = dyn_cast<VarDecl>(RealDecl); |
| 703 | if (!VDecl) { |
Steve Naroff | 8e74c93 | 2007-09-13 21:41:19 +0000 | [diff] [blame] | 704 | Diag(dyn_cast<ScopedDecl>(RealDecl)->getLocation(), |
| 705 | diag::err_illegal_initializer); |
Steve Naroff | 410e3e2 | 2007-09-12 20:13:48 +0000 | [diff] [blame] | 706 | RealDecl->setInvalidDecl(); |
| 707 | return; |
| 708 | } |
Steve Naroff | bb20469 | 2007-09-12 14:07:44 +0000 | [diff] [blame] | 709 | // Get the decls type and save a reference for later, since |
| 710 | // CheckInitializer may change it. |
Steve Naroff | 410e3e2 | 2007-09-12 20:13:48 +0000 | [diff] [blame] | 711 | QualType DclT = VDecl->getType(), SavT = DclT; |
| 712 | if (BlockVarDecl *BVD = dyn_cast<BlockVarDecl>(VDecl)) { |
Steve Naroff | bb20469 | 2007-09-12 14:07:44 +0000 | [diff] [blame] | 713 | VarDecl::StorageClass SC = BVD->getStorageClass(); |
| 714 | if (SC == VarDecl::Extern) { // C99 6.7.8p5 |
Steve Naroff | 410e3e2 | 2007-09-12 20:13:48 +0000 | [diff] [blame] | 715 | Diag(VDecl->getLocation(), diag::err_block_extern_cant_init); |
Steve Naroff | bb20469 | 2007-09-12 14:07:44 +0000 | [diff] [blame] | 716 | BVD->setInvalidDecl(); |
| 717 | } else if (!BVD->isInvalidDecl()) { |
| 718 | CheckInitializer(Init, DclT, SC == VarDecl::Static); |
| 719 | } |
Steve Naroff | 410e3e2 | 2007-09-12 20:13:48 +0000 | [diff] [blame] | 720 | } else if (FileVarDecl *FVD = dyn_cast<FileVarDecl>(VDecl)) { |
Steve Naroff | bb20469 | 2007-09-12 14:07:44 +0000 | [diff] [blame] | 721 | if (FVD->getStorageClass() == VarDecl::Extern) |
Steve Naroff | 410e3e2 | 2007-09-12 20:13:48 +0000 | [diff] [blame] | 722 | Diag(VDecl->getLocation(), diag::warn_extern_init); |
Steve Naroff | bb20469 | 2007-09-12 14:07:44 +0000 | [diff] [blame] | 723 | if (!FVD->isInvalidDecl()) |
| 724 | CheckInitializer(Init, DclT, true); |
| 725 | } |
| 726 | // If the type changed, it means we had an incomplete type that was |
| 727 | // completed by the initializer. For example: |
| 728 | // int ary[] = { 1, 3, 5 }; |
| 729 | // "ary" transitions from a VariableArrayType to a ConstantArrayType. |
Christopher Lamb | 48b1239 | 2007-11-29 19:09:19 +0000 | [diff] [blame^] | 730 | if (!VDecl->isInvalidDecl() && (DclT != SavT)) { |
Steve Naroff | 410e3e2 | 2007-09-12 20:13:48 +0000 | [diff] [blame] | 731 | VDecl->setType(DclT); |
Christopher Lamb | 48b1239 | 2007-11-29 19:09:19 +0000 | [diff] [blame^] | 732 | Init->setType(DclT); |
| 733 | } |
Steve Naroff | bb20469 | 2007-09-12 14:07:44 +0000 | [diff] [blame] | 734 | |
| 735 | // Attach the initializer to the decl. |
Steve Naroff | 410e3e2 | 2007-09-12 20:13:48 +0000 | [diff] [blame] | 736 | VDecl->setInit(Init); |
Steve Naroff | bb20469 | 2007-09-12 14:07:44 +0000 | [diff] [blame] | 737 | return; |
| 738 | } |
| 739 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 740 | /// The declarators are chained together backwards, reverse the list. |
| 741 | Sema::DeclTy *Sema::FinalizeDeclaratorGroup(Scope *S, DeclTy *group) { |
| 742 | // Often we have single declarators, handle them quickly. |
Steve Naroff | 9474504 | 2007-09-13 23:52:58 +0000 | [diff] [blame] | 743 | Decl *GroupDecl = static_cast<Decl*>(group); |
| 744 | if (GroupDecl == 0) |
Steve Naroff | bb20469 | 2007-09-12 14:07:44 +0000 | [diff] [blame] | 745 | return 0; |
Steve Naroff | 9474504 | 2007-09-13 23:52:58 +0000 | [diff] [blame] | 746 | |
| 747 | ScopedDecl *Group = dyn_cast<ScopedDecl>(GroupDecl); |
| 748 | ScopedDecl *NewGroup = 0; |
Steve Naroff | bb20469 | 2007-09-12 14:07:44 +0000 | [diff] [blame] | 749 | if (Group->getNextDeclarator() == 0) |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 750 | NewGroup = Group; |
Steve Naroff | bb20469 | 2007-09-12 14:07:44 +0000 | [diff] [blame] | 751 | else { // reverse the list. |
| 752 | while (Group) { |
Steve Naroff | 9474504 | 2007-09-13 23:52:58 +0000 | [diff] [blame] | 753 | ScopedDecl *Next = Group->getNextDeclarator(); |
Steve Naroff | bb20469 | 2007-09-12 14:07:44 +0000 | [diff] [blame] | 754 | Group->setNextDeclarator(NewGroup); |
| 755 | NewGroup = Group; |
| 756 | Group = Next; |
| 757 | } |
| 758 | } |
| 759 | // Perform semantic analysis that depends on having fully processed both |
| 760 | // the declarator and initializer. |
Steve Naroff | 9474504 | 2007-09-13 23:52:58 +0000 | [diff] [blame] | 761 | for (ScopedDecl *ID = NewGroup; ID; ID = ID->getNextDeclarator()) { |
Steve Naroff | bb20469 | 2007-09-12 14:07:44 +0000 | [diff] [blame] | 762 | VarDecl *IDecl = dyn_cast<VarDecl>(ID); |
| 763 | if (!IDecl) |
| 764 | continue; |
| 765 | FileVarDecl *FVD = dyn_cast<FileVarDecl>(IDecl); |
| 766 | BlockVarDecl *BVD = dyn_cast<BlockVarDecl>(IDecl); |
| 767 | QualType T = IDecl->getType(); |
| 768 | |
| 769 | // C99 6.7.5.2p2: If an identifier is declared to be an object with |
| 770 | // static storage duration, it shall not have a variable length array. |
| 771 | if ((FVD || BVD) && IDecl->getStorageClass() == VarDecl::Static) { |
| 772 | if (const VariableArrayType *VLA = T->getAsVariableArrayType()) { |
| 773 | if (VLA->getSizeExpr()) { |
| 774 | Diag(IDecl->getLocation(), diag::err_typecheck_illegal_vla); |
| 775 | IDecl->setInvalidDecl(); |
| 776 | } |
| 777 | } |
| 778 | } |
| 779 | // Block scope. C99 6.7p7: If an identifier for an object is declared with |
| 780 | // no linkage (C99 6.2.2p6), the type for the object shall be complete... |
| 781 | if (BVD && IDecl->getStorageClass() != VarDecl::Extern) { |
| 782 | if (T->isIncompleteType()) { |
| 783 | Diag(IDecl->getLocation(), diag::err_typecheck_decl_incomplete_type, |
| 784 | T.getAsString()); |
| 785 | IDecl->setInvalidDecl(); |
| 786 | } |
| 787 | } |
| 788 | // File scope. C99 6.9.2p2: A declaration of an identifier for and |
| 789 | // object that has file scope without an initializer, and without a |
| 790 | // storage-class specifier or with the storage-class specifier "static", |
| 791 | // constitutes a tentative definition. Note: A tentative definition with |
| 792 | // external linkage is valid (C99 6.2.2p5). |
| 793 | if (FVD && !FVD->getInit() && FVD->getStorageClass() == VarDecl::Static) { |
| 794 | // C99 6.9.2p3: If the declaration of an identifier for an object is |
| 795 | // a tentative definition and has internal linkage (C99 6.2.2p3), the |
| 796 | // declared type shall not be an incomplete type. |
| 797 | if (T->isIncompleteType()) { |
| 798 | Diag(IDecl->getLocation(), diag::err_typecheck_decl_incomplete_type, |
| 799 | T.getAsString()); |
| 800 | IDecl->setInvalidDecl(); |
| 801 | } |
| 802 | } |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 803 | } |
| 804 | return NewGroup; |
| 805 | } |
Steve Naroff | e1223f7 | 2007-08-28 03:03:08 +0000 | [diff] [blame] | 806 | |
| 807 | // Called from Sema::ParseStartOfFunctionDef(). |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 808 | ParmVarDecl * |
Nate Begeman | bff5f5c | 2007-11-13 21:49:48 +0000 | [diff] [blame] | 809 | Sema::ActOnParamDeclarator(struct DeclaratorChunk::ParamInfo &PI, Scope *FnScope) |
Steve Naroff | 6649992 | 2007-11-12 03:44:46 +0000 | [diff] [blame] | 810 | { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 811 | IdentifierInfo *II = PI.Ident; |
| 812 | // TODO: CHECK FOR CONFLICTS, multiple decls with same name in one scope. |
| 813 | // Can this happen for params? We already checked that they don't conflict |
| 814 | // among each other. Here they can only shadow globals, which is ok. |
Chris Lattner | 8b9023b | 2007-07-13 03:05:23 +0000 | [diff] [blame] | 815 | if (/*Decl *PrevDecl = */LookupScopedDecl(II, Decl::IDNS_Ordinary, |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 816 | PI.IdentLoc, FnScope)) { |
| 817 | |
| 818 | } |
| 819 | |
| 820 | // FIXME: Handle storage class (auto, register). No declarator? |
| 821 | // TODO: Chain to previous parameter with the prevdeclarator chain? |
Steve Naroff | 6a9f3e3 | 2007-08-07 22:44:21 +0000 | [diff] [blame] | 822 | |
| 823 | // Perform the default function/array conversion (C99 6.7.5.3p[7,8]). |
| 824 | // Doing the promotion here has a win and a loss. The win is the type for |
| 825 | // both Decl's and DeclRefExpr's will match (a convenient invariant for the |
| 826 | // code generator). The loss is the orginal type isn't preserved. For example: |
| 827 | // |
| 828 | // void func(int parmvardecl[5]) { // convert "int [5]" to "int *" |
| 829 | // int blockvardecl[5]; |
| 830 | // sizeof(parmvardecl); // size == 4 |
| 831 | // sizeof(blockvardecl); // size == 20 |
| 832 | // } |
| 833 | // |
| 834 | // For expressions, all implicit conversions are captured using the |
| 835 | // ImplicitCastExpr AST node (we have no such mechanism for Decl's). |
| 836 | // |
| 837 | // FIXME: If a source translation tool needs to see the original type, then |
| 838 | // we need to consider storing both types (in ParmVarDecl)... |
| 839 | // |
| 840 | QualType parmDeclType = QualType::getFromOpaquePtr(PI.TypeInfo); |
| 841 | if (const ArrayType *AT = parmDeclType->getAsArrayType()) |
| 842 | parmDeclType = Context.getPointerType(AT->getElementType()); |
| 843 | else if (parmDeclType->isFunctionType()) |
| 844 | parmDeclType = Context.getPointerType(parmDeclType); |
| 845 | |
| 846 | ParmVarDecl *New = new ParmVarDecl(PI.IdentLoc, II, parmDeclType, |
Nate Begeman | 1b4e251 | 2007-11-13 22:14:47 +0000 | [diff] [blame] | 847 | VarDecl::None, 0, PI.AttrList); |
Steve Naroff | 53a3234 | 2007-08-28 18:45:29 +0000 | [diff] [blame] | 848 | if (PI.InvalidType) |
| 849 | New->setInvalidDecl(); |
| 850 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 851 | // If this has an identifier, add it to the scope stack. |
| 852 | if (II) { |
Steve Naroff | c752d04 | 2007-09-13 18:10:37 +0000 | [diff] [blame] | 853 | New->setNext(II->getFETokenInfo<ScopedDecl>()); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 854 | II->setFETokenInfo(New); |
| 855 | FnScope->AddDecl(New); |
| 856 | } |
| 857 | |
| 858 | return New; |
| 859 | } |
Fariborz Jahanian | 306d68f | 2007-11-08 23:49:49 +0000 | [diff] [blame] | 860 | |
Chris Lattner | b652cea | 2007-10-09 17:14:05 +0000 | [diff] [blame] | 861 | Sema::DeclTy *Sema::ActOnStartOfFunctionDef(Scope *FnBodyScope, Declarator &D) { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 862 | assert(CurFunctionDecl == 0 && "Function parsing confused"); |
| 863 | assert(D.getTypeObject(0).Kind == DeclaratorChunk::Function && |
| 864 | "Not a function declarator!"); |
| 865 | DeclaratorChunk::FunctionTypeInfo &FTI = D.getTypeObject(0).Fun; |
| 866 | |
| 867 | // Verify 6.9.1p6: 'every identifier in the identifier list shall be declared' |
| 868 | // for a K&R function. |
| 869 | if (!FTI.hasPrototype) { |
| 870 | for (unsigned i = 0, e = FTI.NumArgs; i != e; ++i) { |
| 871 | if (FTI.ArgInfo[i].TypeInfo == 0) { |
| 872 | Diag(FTI.ArgInfo[i].IdentLoc, diag::ext_param_not_declared, |
| 873 | FTI.ArgInfo[i].Ident->getName()); |
| 874 | // Implicitly declare the argument as type 'int' for lack of a better |
| 875 | // type. |
| 876 | FTI.ArgInfo[i].TypeInfo = Context.IntTy.getAsOpaquePtr(); |
| 877 | } |
| 878 | } |
| 879 | |
| 880 | // Since this is a function definition, act as though we have information |
| 881 | // about the arguments. |
| 882 | FTI.hasPrototype = true; |
| 883 | } else { |
| 884 | // FIXME: Diagnose arguments without names in C. |
| 885 | |
| 886 | } |
| 887 | |
| 888 | Scope *GlobalScope = FnBodyScope->getParent(); |
| 889 | |
| 890 | FunctionDecl *FD = |
Steve Naroff | 08d92e4 | 2007-09-15 18:49:24 +0000 | [diff] [blame] | 891 | static_cast<FunctionDecl*>(ActOnDeclarator(GlobalScope, D, 0)); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 892 | CurFunctionDecl = FD; |
| 893 | |
| 894 | // Create Decl objects for each parameter, adding them to the FunctionDecl. |
| 895 | llvm::SmallVector<ParmVarDecl*, 16> Params; |
| 896 | |
| 897 | // Check for C99 6.7.5.3p10 - foo(void) is a non-varargs function that takes |
| 898 | // no arguments, not a function that takes a single void argument. |
| 899 | if (FTI.NumArgs == 1 && !FTI.isVariadic && FTI.ArgInfo[0].Ident == 0 && |
Chris Lattner | b751c28 | 2007-11-28 18:51:29 +0000 | [diff] [blame] | 900 | !QualType::getFromOpaquePtr(FTI.ArgInfo[0].TypeInfo).getQualifiers() && |
| 901 | QualType::getFromOpaquePtr(FTI.ArgInfo[0].TypeInfo)->isVoidType()) { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 902 | // empty arg list, don't push any params. |
| 903 | } else { |
Steve Naroff | 6649992 | 2007-11-12 03:44:46 +0000 | [diff] [blame] | 904 | for (unsigned i = 0, e = FTI.NumArgs; i != e; ++i) { |
Nate Begeman | bff5f5c | 2007-11-13 21:49:48 +0000 | [diff] [blame] | 905 | Params.push_back(ActOnParamDeclarator(D.getTypeObject(0).Fun.ArgInfo[i], |
Steve Naroff | 6649992 | 2007-11-12 03:44:46 +0000 | [diff] [blame] | 906 | FnBodyScope)); |
| 907 | } |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 908 | } |
| 909 | |
| 910 | FD->setParams(&Params[0], Params.size()); |
| 911 | |
| 912 | return FD; |
| 913 | } |
| 914 | |
Steve Naroff | d6d054d | 2007-11-11 23:20:51 +0000 | [diff] [blame] | 915 | Sema::DeclTy *Sema::ActOnFinishFunctionBody(DeclTy *D, StmtTy *Body) { |
| 916 | Decl *dcl = static_cast<Decl *>(D); |
| 917 | if (FunctionDecl *FD = dyn_cast<FunctionDecl>(dcl)) { |
| 918 | FD->setBody((Stmt*)Body); |
| 919 | assert(FD == CurFunctionDecl && "Function parsing confused"); |
| 920 | } else if (ObjcMethodDecl *MD = dyn_cast<ObjcMethodDecl>(dcl)) { |
| 921 | MD->setBody((Stmt*)Body); |
Steve Naroff | 0330071 | 2007-11-12 13:56:41 +0000 | [diff] [blame] | 922 | CurMethodDecl = 0; |
Steve Naroff | d6d054d | 2007-11-11 23:20:51 +0000 | [diff] [blame] | 923 | } |
Steve Naroff | 0330071 | 2007-11-12 13:56:41 +0000 | [diff] [blame] | 924 | // This is unconditional, since methods have a corresponding function decl. |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 925 | CurFunctionDecl = 0; |
| 926 | |
| 927 | // Verify and clean out per-function state. |
| 928 | |
| 929 | // Check goto/label use. |
| 930 | for (llvm::DenseMap<IdentifierInfo*, LabelStmt*>::iterator |
| 931 | I = LabelMap.begin(), E = LabelMap.end(); I != E; ++I) { |
| 932 | // Verify that we have no forward references left. If so, there was a goto |
| 933 | // or address of a label taken, but no definition of it. Label fwd |
| 934 | // definitions are indicated with a null substmt. |
| 935 | if (I->second->getSubStmt() == 0) { |
| 936 | LabelStmt *L = I->second; |
| 937 | // Emit error. |
| 938 | Diag(L->getIdentLoc(), diag::err_undeclared_label_use, L->getName()); |
| 939 | |
| 940 | // At this point, we have gotos that use the bogus label. Stitch it into |
| 941 | // the function body so that they aren't leaked and that the AST is well |
| 942 | // formed. |
| 943 | L->setSubStmt(new NullStmt(L->getIdentLoc())); |
| 944 | cast<CompoundStmt>((Stmt*)Body)->push_back(L); |
| 945 | } |
| 946 | } |
| 947 | LabelMap.clear(); |
| 948 | |
Steve Naroff | d6d054d | 2007-11-11 23:20:51 +0000 | [diff] [blame] | 949 | return D; |
Fariborz Jahanian | 60fbca0 | 2007-11-10 16:31:34 +0000 | [diff] [blame] | 950 | } |
| 951 | |
Fariborz Jahanian | 360300c | 2007-11-09 22:27:59 +0000 | [diff] [blame] | 952 | /// ObjcActOnStartOfMethodDef - This routine sets up parameters; invisible |
| 953 | /// and user declared, in the method definition's AST. |
Fariborz Jahanian | 439d28c | 2007-11-10 17:40:57 +0000 | [diff] [blame] | 954 | void Sema::ObjcActOnStartOfMethodDef(Scope *FnBodyScope, DeclTy *D) { |
Steve Naroff | 0330071 | 2007-11-12 13:56:41 +0000 | [diff] [blame] | 955 | assert(CurFunctionDecl == 0 && "Method parsing confused"); |
Fariborz Jahanian | 306d68f | 2007-11-08 23:49:49 +0000 | [diff] [blame] | 956 | ObjcMethodDecl *MDecl = dyn_cast<ObjcMethodDecl>(static_cast<Decl *>(D)); |
Fariborz Jahanian | 306d68f | 2007-11-08 23:49:49 +0000 | [diff] [blame] | 957 | assert(MDecl != 0 && "Not a method declarator!"); |
| 958 | |
| 959 | Scope *GlobalScope = FnBodyScope->getParent(); |
| 960 | |
Steve Naroff | 0755aba | 2007-11-12 04:59:00 +0000 | [diff] [blame] | 961 | // build [classname selector-name] for the name of method. |
| 962 | std::string Name = "["; |
| 963 | Name += MDecl->getClassInterface()->getName(); |
| 964 | Name += " "; |
| 965 | Name += MDecl->getSelector().getName(); |
| 966 | Name += "]"; |
| 967 | IdentifierInfo *II = &Context.Idents.get(Name); |
Steve Naroff | 0330071 | 2007-11-12 13:56:41 +0000 | [diff] [blame] | 968 | assert (II && "ObjcActOnStartOfMethodDef - selector name is missing"); |
Fariborz Jahanian | 306d68f | 2007-11-08 23:49:49 +0000 | [diff] [blame] | 969 | |
Steve Naroff | 0755aba | 2007-11-12 04:59:00 +0000 | [diff] [blame] | 970 | QualType R = ObjcGetTypeForMethodDefinition(MDecl, GlobalScope); |
Steve Naroff | 0330071 | 2007-11-12 13:56:41 +0000 | [diff] [blame] | 971 | assert(!R.isNull() && "ObjcActOnStartOfMethodDef() returned null type"); |
Steve Naroff | 0755aba | 2007-11-12 04:59:00 +0000 | [diff] [blame] | 972 | |
| 973 | FunctionDecl *NewFD = new FunctionDecl(MDecl->getLocation(), II, R, |
| 974 | FunctionDecl::Static, false, 0); |
| 975 | NewFD->setNext(II->getFETokenInfo<ScopedDecl>()); |
| 976 | II->setFETokenInfo(NewFD); |
| 977 | GlobalScope->AddDecl(NewFD); |
Steve Naroff | 1f64432 | 2007-11-28 22:54:11 +0000 | [diff] [blame] | 978 | AddTopLevelDecl(NewFD); |
Steve Naroff | 0330071 | 2007-11-12 13:56:41 +0000 | [diff] [blame] | 979 | |
| 980 | // Allow all of Sema to see that we are entering a method definition. |
| 981 | CurMethodDecl = MDecl; |
Steve Naroff | 0755aba | 2007-11-12 04:59:00 +0000 | [diff] [blame] | 982 | CurFunctionDecl = NewFD; |
| 983 | |
Fariborz Jahanian | 306d68f | 2007-11-08 23:49:49 +0000 | [diff] [blame] | 984 | // Create Decl objects for each parameter, adding them to the FunctionDecl. |
| 985 | llvm::SmallVector<ParmVarDecl*, 16> Params; |
Steve Naroff | 6649992 | 2007-11-12 03:44:46 +0000 | [diff] [blame] | 986 | struct DeclaratorChunk::ParamInfo PI; |
| 987 | |
Steve Naroff | 0330071 | 2007-11-12 13:56:41 +0000 | [diff] [blame] | 988 | // Insert the invisible arguments, self and _cmd! |
Steve Naroff | 6649992 | 2007-11-12 03:44:46 +0000 | [diff] [blame] | 989 | PI.Ident = &Context.Idents.get("self"); |
Steve Naroff | 0330071 | 2007-11-12 13:56:41 +0000 | [diff] [blame] | 990 | PI.IdentLoc = SourceLocation(); // synthesized vars have a null location. |
Steve Naroff | bd278bc | 2007-11-12 19:48:27 +0000 | [diff] [blame] | 991 | PI.InvalidType = false; |
Fariborz Jahanian | 1f7b6f8 | 2007-11-09 19:52:12 +0000 | [diff] [blame] | 992 | if (MDecl->isInstance()) { |
| 993 | QualType selfTy = Context.getObjcInterfaceType(MDecl->getClassInterface()); |
| 994 | selfTy = Context.getPointerType(selfTy); |
Steve Naroff | 6649992 | 2007-11-12 03:44:46 +0000 | [diff] [blame] | 995 | PI.TypeInfo = selfTy.getAsOpaquePtr(); |
| 996 | } else |
| 997 | PI.TypeInfo = Context.getObjcIdType().getAsOpaquePtr(); |
Nate Begeman | bff5f5c | 2007-11-13 21:49:48 +0000 | [diff] [blame] | 998 | Params.push_back(ActOnParamDeclarator(PI, FnBodyScope)); |
Steve Naroff | 6649992 | 2007-11-12 03:44:46 +0000 | [diff] [blame] | 999 | |
| 1000 | PI.Ident = &Context.Idents.get("_cmd"); |
Steve Naroff | 6649992 | 2007-11-12 03:44:46 +0000 | [diff] [blame] | 1001 | PI.TypeInfo = Context.getObjcSelType().getAsOpaquePtr(); |
Nate Begeman | bff5f5c | 2007-11-13 21:49:48 +0000 | [diff] [blame] | 1002 | Params.push_back(ActOnParamDeclarator(PI, FnBodyScope)); |
Steve Naroff | 6649992 | 2007-11-12 03:44:46 +0000 | [diff] [blame] | 1003 | |
Fariborz Jahanian | 306d68f | 2007-11-08 23:49:49 +0000 | [diff] [blame] | 1004 | for (int i = 0; i < MDecl->getNumParams(); i++) { |
Steve Naroff | 6649992 | 2007-11-12 03:44:46 +0000 | [diff] [blame] | 1005 | ParmVarDecl *PDecl = MDecl->getParamDecl(i); |
| 1006 | PI.Ident = PDecl->getIdentifier(); |
Steve Naroff | 0330071 | 2007-11-12 13:56:41 +0000 | [diff] [blame] | 1007 | PI.IdentLoc = PDecl->getLocation(); // user vars have a real location. |
Steve Naroff | 6649992 | 2007-11-12 03:44:46 +0000 | [diff] [blame] | 1008 | PI.TypeInfo = PDecl->getType().getAsOpaquePtr(); |
Nate Begeman | bff5f5c | 2007-11-13 21:49:48 +0000 | [diff] [blame] | 1009 | Params.push_back(ActOnParamDeclarator(PI, FnBodyScope)); |
Fariborz Jahanian | 306d68f | 2007-11-08 23:49:49 +0000 | [diff] [blame] | 1010 | } |
Steve Naroff | 0755aba | 2007-11-12 04:59:00 +0000 | [diff] [blame] | 1011 | NewFD->setParams(&Params[0], Params.size()); |
Fariborz Jahanian | 306d68f | 2007-11-08 23:49:49 +0000 | [diff] [blame] | 1012 | } |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1013 | |
| 1014 | /// ImplicitlyDefineFunction - An undeclared identifier was used in a function |
| 1015 | /// call, forming a call to an implicitly defined function (per C99 6.5.1p2). |
Steve Naroff | 8c9f13e | 2007-09-16 16:16:00 +0000 | [diff] [blame] | 1016 | ScopedDecl *Sema::ImplicitlyDefineFunction(SourceLocation Loc, |
| 1017 | IdentifierInfo &II, Scope *S) { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1018 | if (getLangOptions().C99) // Extension in C99. |
| 1019 | Diag(Loc, diag::ext_implicit_function_decl, II.getName()); |
| 1020 | else // Legal in C90, but warn about it. |
| 1021 | Diag(Loc, diag::warn_implicit_function_decl, II.getName()); |
| 1022 | |
| 1023 | // FIXME: handle stuff like: |
| 1024 | // void foo() { extern float X(); } |
| 1025 | // void bar() { X(); } <-- implicit decl for X in another scope. |
| 1026 | |
| 1027 | // Set a Declarator for the implicit definition: int foo(); |
| 1028 | const char *Dummy; |
| 1029 | DeclSpec DS; |
| 1030 | bool Error = DS.SetTypeSpecType(DeclSpec::TST_int, Loc, Dummy); |
| 1031 | Error = Error; // Silence warning. |
| 1032 | assert(!Error && "Error setting up implicit decl!"); |
| 1033 | Declarator D(DS, Declarator::BlockContext); |
| 1034 | D.AddTypeInfo(DeclaratorChunk::getFunction(false, false, 0, 0, Loc)); |
| 1035 | D.SetIdentifier(&II, Loc); |
| 1036 | |
| 1037 | // Find translation-unit scope to insert this function into. |
Chris Lattner | 31e0572 | 2007-08-26 06:24:45 +0000 | [diff] [blame] | 1038 | if (Scope *FnS = S->getFnParent()) |
| 1039 | S = FnS->getParent(); // Skip all scopes in a function at once. |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1040 | while (S->getParent()) |
| 1041 | S = S->getParent(); |
| 1042 | |
Steve Naroff | 8c9f13e | 2007-09-16 16:16:00 +0000 | [diff] [blame] | 1043 | return dyn_cast<ScopedDecl>(static_cast<Decl*>(ActOnDeclarator(S, D, 0))); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1044 | } |
| 1045 | |
| 1046 | |
Chris Lattner | 41af093 | 2007-11-14 06:34:38 +0000 | [diff] [blame] | 1047 | TypedefDecl *Sema::ParseTypedefDecl(Scope *S, Declarator &D, QualType T, |
Steve Naroff | 9474504 | 2007-09-13 23:52:58 +0000 | [diff] [blame] | 1048 | ScopedDecl *LastDeclarator) { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1049 | assert(D.getIdentifier() && "Wrong callback for declspec without declarator"); |
Steve Naroff | 5912a35 | 2007-08-28 20:14:24 +0000 | [diff] [blame] | 1050 | assert(!T.isNull() && "GetTypeForDeclarator() returned null type"); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1051 | |
| 1052 | // Scope manipulation handled by caller. |
Steve Naroff | 5912a35 | 2007-08-28 20:14:24 +0000 | [diff] [blame] | 1053 | TypedefDecl *NewTD = new TypedefDecl(D.getIdentifierLoc(), D.getIdentifier(), |
| 1054 | T, LastDeclarator); |
| 1055 | if (D.getInvalidType()) |
| 1056 | NewTD->setInvalidDecl(); |
| 1057 | return NewTD; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1058 | } |
| 1059 | |
Steve Naroff | e440eb8 | 2007-10-10 17:32:04 +0000 | [diff] [blame] | 1060 | Sema::DeclTy *Sema::ActOnStartClassInterface( |
Fariborz Jahanian | ccb4f31 | 2007-09-25 18:38:09 +0000 | [diff] [blame] | 1061 | SourceLocation AtInterfaceLoc, |
Steve Naroff | 3536b44 | 2007-09-06 21:24:23 +0000 | [diff] [blame] | 1062 | IdentifierInfo *ClassName, SourceLocation ClassLoc, |
| 1063 | IdentifierInfo *SuperName, SourceLocation SuperLoc, |
| 1064 | IdentifierInfo **ProtocolNames, unsigned NumProtocols, |
Steve Naroff | f908a87 | 2007-10-30 02:23:23 +0000 | [diff] [blame] | 1065 | SourceLocation EndProtoLoc, AttributeList *AttrList) { |
Steve Naroff | 3536b44 | 2007-09-06 21:24:23 +0000 | [diff] [blame] | 1066 | assert(ClassName && "Missing class identifier"); |
Fariborz Jahanian | ccb4f31 | 2007-09-25 18:38:09 +0000 | [diff] [blame] | 1067 | |
| 1068 | // Check for another declaration kind with the same name. |
Fariborz Jahanian | 4cabdfc | 2007-10-12 19:38:20 +0000 | [diff] [blame] | 1069 | ScopedDecl *PrevDecl = LookupInterfaceDecl(ClassName); |
Fariborz Jahanian | 05672a0 | 2007-10-09 18:03:53 +0000 | [diff] [blame] | 1070 | if (PrevDecl && !isa<ObjcInterfaceDecl>(PrevDecl)) { |
Fariborz Jahanian | ccb4f31 | 2007-09-25 18:38:09 +0000 | [diff] [blame] | 1071 | Diag(ClassLoc, diag::err_redefinition_different_kind, |
| 1072 | ClassName->getName()); |
| 1073 | Diag(PrevDecl->getLocation(), diag::err_previous_definition); |
| 1074 | } |
| 1075 | |
Fariborz Jahanian | 4cabdfc | 2007-10-12 19:38:20 +0000 | [diff] [blame] | 1076 | ObjcInterfaceDecl* IDecl = dyn_cast_or_null<ObjcInterfaceDecl>(PrevDecl); |
Fariborz Jahanian | bd51b87 | 2007-09-20 20:26:44 +0000 | [diff] [blame] | 1077 | if (IDecl) { |
| 1078 | // Class already seen. Is it a forward declaration? |
Steve Naroff | 768f26e | 2007-10-02 20:26:23 +0000 | [diff] [blame] | 1079 | if (!IDecl->isForwardDecl()) |
Fariborz Jahanian | 4cabdfc | 2007-10-12 19:38:20 +0000 | [diff] [blame] | 1080 | Diag(AtInterfaceLoc, diag::err_duplicate_class_def, IDecl->getName()); |
Fariborz Jahanian | b27c156 | 2007-09-22 00:01:35 +0000 | [diff] [blame] | 1081 | else { |
Steve Naroff | f908a87 | 2007-10-30 02:23:23 +0000 | [diff] [blame] | 1082 | IDecl->setLocation(AtInterfaceLoc); |
Steve Naroff | 768f26e | 2007-10-02 20:26:23 +0000 | [diff] [blame] | 1083 | IDecl->setForwardDecl(false); |
Fariborz Jahanian | b27c156 | 2007-09-22 00:01:35 +0000 | [diff] [blame] | 1084 | IDecl->AllocIntfRefProtocols(NumProtocols); |
| 1085 | } |
Fariborz Jahanian | bd51b87 | 2007-09-20 20:26:44 +0000 | [diff] [blame] | 1086 | } |
| 1087 | else { |
Fariborz Jahanian | b27c156 | 2007-09-22 00:01:35 +0000 | [diff] [blame] | 1088 | IDecl = new ObjcInterfaceDecl(AtInterfaceLoc, NumProtocols, ClassName); |
Fariborz Jahanian | 1d5b0e3 | 2007-09-20 17:54:07 +0000 | [diff] [blame] | 1089 | |
Fariborz Jahanian | bd51b87 | 2007-09-20 20:26:44 +0000 | [diff] [blame] | 1090 | // Chain & install the interface decl into the identifier. |
| 1091 | IDecl->setNext(ClassName->getFETokenInfo<ScopedDecl>()); |
| 1092 | ClassName->setFETokenInfo(IDecl); |
Fariborz Jahanian | be127ba | 2007-10-15 19:16:57 +0000 | [diff] [blame] | 1093 | |
| 1094 | // Remember that this needs to be removed when the scope is popped. |
| 1095 | TUScope->AddDecl(IDecl); |
Fariborz Jahanian | bd51b87 | 2007-09-20 20:26:44 +0000 | [diff] [blame] | 1096 | } |
Fariborz Jahanian | 1d5b0e3 | 2007-09-20 17:54:07 +0000 | [diff] [blame] | 1097 | |
| 1098 | if (SuperName) { |
Fariborz Jahanian | ccb4f31 | 2007-09-25 18:38:09 +0000 | [diff] [blame] | 1099 | ObjcInterfaceDecl* SuperClassEntry = 0; |
| 1100 | // Check if a different kind of symbol declared in this scope. |
Fariborz Jahanian | 4cabdfc | 2007-10-12 19:38:20 +0000 | [diff] [blame] | 1101 | PrevDecl = LookupInterfaceDecl(SuperName); |
Fariborz Jahanian | 05672a0 | 2007-10-09 18:03:53 +0000 | [diff] [blame] | 1102 | if (PrevDecl && !isa<ObjcInterfaceDecl>(PrevDecl)) { |
Fariborz Jahanian | ccb4f31 | 2007-09-25 18:38:09 +0000 | [diff] [blame] | 1103 | Diag(SuperLoc, diag::err_redefinition_different_kind, |
| 1104 | SuperName->getName()); |
| 1105 | Diag(PrevDecl->getLocation(), diag::err_previous_definition); |
Fariborz Jahanian | 1d5b0e3 | 2007-09-20 17:54:07 +0000 | [diff] [blame] | 1106 | } |
Fariborz Jahanian | ccb4f31 | 2007-09-25 18:38:09 +0000 | [diff] [blame] | 1107 | else { |
| 1108 | // Check that super class is previously defined |
Fariborz Jahanian | 4cabdfc | 2007-10-12 19:38:20 +0000 | [diff] [blame] | 1109 | SuperClassEntry = dyn_cast_or_null<ObjcInterfaceDecl>(PrevDecl); |
Fariborz Jahanian | ccb4f31 | 2007-09-25 18:38:09 +0000 | [diff] [blame] | 1110 | |
Steve Naroff | 768f26e | 2007-10-02 20:26:23 +0000 | [diff] [blame] | 1111 | if (!SuperClassEntry || SuperClassEntry->isForwardDecl()) { |
Fariborz Jahanian | 4cabdfc | 2007-10-12 19:38:20 +0000 | [diff] [blame] | 1112 | Diag(AtInterfaceLoc, diag::err_undef_superclass, |
| 1113 | SuperClassEntry ? SuperClassEntry->getName() |
| 1114 | : SuperName->getName(), |
Fariborz Jahanian | ccb4f31 | 2007-09-25 18:38:09 +0000 | [diff] [blame] | 1115 | ClassName->getName()); |
| 1116 | } |
| 1117 | } |
| 1118 | IDecl->setSuperClass(SuperClassEntry); |
Steve Naroff | f908a87 | 2007-10-30 02:23:23 +0000 | [diff] [blame] | 1119 | IDecl->setLocEnd(SuperLoc); |
| 1120 | } else { // we have a root class. |
| 1121 | IDecl->setLocEnd(ClassLoc); |
Fariborz Jahanian | 1d5b0e3 | 2007-09-20 17:54:07 +0000 | [diff] [blame] | 1122 | } |
| 1123 | |
Fariborz Jahanian | b27c156 | 2007-09-22 00:01:35 +0000 | [diff] [blame] | 1124 | /// Check then save referenced protocols |
Steve Naroff | f908a87 | 2007-10-30 02:23:23 +0000 | [diff] [blame] | 1125 | if (NumProtocols) { |
| 1126 | for (unsigned int i = 0; i != NumProtocols; i++) { |
| 1127 | ObjcProtocolDecl* RefPDecl = ObjcProtocols[ProtocolNames[i]]; |
| 1128 | if (!RefPDecl || RefPDecl->isForwardDecl()) |
| 1129 | Diag(ClassLoc, diag::err_undef_protocolref, |
| 1130 | ProtocolNames[i]->getName(), |
| 1131 | ClassName->getName()); |
| 1132 | IDecl->setIntfRefProtocols((int)i, RefPDecl); |
| 1133 | } |
| 1134 | IDecl->setLocEnd(EndProtoLoc); |
Fariborz Jahanian | b27c156 | 2007-09-22 00:01:35 +0000 | [diff] [blame] | 1135 | } |
Steve Naroff | 3536b44 | 2007-09-06 21:24:23 +0000 | [diff] [blame] | 1136 | return IDecl; |
| 1137 | } |
| 1138 | |
Fariborz Jahanian | 243b64b | 2007-10-11 23:42:27 +0000 | [diff] [blame] | 1139 | /// ActOnCompatiblityAlias - this action is called after complete parsing of |
| 1140 | /// @compaatibility_alias declaration. It sets up the alias relationships. |
| 1141 | Sema::DeclTy *Sema::ActOnCompatiblityAlias( |
| 1142 | SourceLocation AtCompatibilityAliasLoc, |
| 1143 | IdentifierInfo *AliasName, SourceLocation AliasLocation, |
| 1144 | IdentifierInfo *ClassName, SourceLocation ClassLocation) { |
| 1145 | // Look for previous declaration of alias name |
| 1146 | ScopedDecl *ADecl = LookupScopedDecl(AliasName, Decl::IDNS_Ordinary, |
| 1147 | AliasLocation, TUScope); |
| 1148 | if (ADecl) { |
| 1149 | if (isa<ObjcCompatibleAliasDecl>(ADecl)) { |
| 1150 | Diag(AliasLocation, diag::warn_previous_alias_decl); |
| 1151 | Diag(ADecl->getLocation(), diag::warn_previous_declaration); |
| 1152 | } |
| 1153 | else { |
| 1154 | Diag(AliasLocation, diag::err_conflicting_aliasing_type, |
| 1155 | AliasName->getName()); |
| 1156 | Diag(ADecl->getLocation(), diag::err_previous_declaration); |
| 1157 | } |
| 1158 | return 0; |
| 1159 | } |
| 1160 | // Check for class declaration |
| 1161 | ScopedDecl *CDecl = LookupScopedDecl(ClassName, Decl::IDNS_Ordinary, |
| 1162 | ClassLocation, TUScope); |
| 1163 | if (!CDecl || !isa<ObjcInterfaceDecl>(CDecl)) { |
| 1164 | Diag(ClassLocation, diag::warn_undef_interface, |
| 1165 | ClassName->getName()); |
| 1166 | if (CDecl) |
| 1167 | Diag(CDecl->getLocation(), diag::warn_previous_declaration); |
| 1168 | return 0; |
| 1169 | } |
| 1170 | // Everything checked out, instantiate a new alias declaration ast |
| 1171 | ObjcCompatibleAliasDecl *AliasDecl = |
| 1172 | new ObjcCompatibleAliasDecl(AtCompatibilityAliasLoc, |
| 1173 | AliasName, |
| 1174 | dyn_cast<ObjcInterfaceDecl>(CDecl)); |
| 1175 | |
| 1176 | // Chain & install the interface decl into the identifier. |
| 1177 | AliasDecl->setNext(AliasName->getFETokenInfo<ScopedDecl>()); |
| 1178 | AliasName->setFETokenInfo(AliasDecl); |
| 1179 | return AliasDecl; |
| 1180 | } |
| 1181 | |
Steve Naroff | e440eb8 | 2007-10-10 17:32:04 +0000 | [diff] [blame] | 1182 | Sema::DeclTy *Sema::ActOnStartProtocolInterface( |
Fariborz Jahanian | 3f5faf7 | 2007-10-04 00:45:27 +0000 | [diff] [blame] | 1183 | SourceLocation AtProtoInterfaceLoc, |
Fariborz Jahanian | 25e077d | 2007-09-17 21:07:36 +0000 | [diff] [blame] | 1184 | IdentifierInfo *ProtocolName, SourceLocation ProtocolLoc, |
Steve Naroff | f908a87 | 2007-10-30 02:23:23 +0000 | [diff] [blame] | 1185 | IdentifierInfo **ProtoRefNames, unsigned NumProtoRefs, |
| 1186 | SourceLocation EndProtoLoc) { |
Fariborz Jahanian | 25e077d | 2007-09-17 21:07:36 +0000 | [diff] [blame] | 1187 | assert(ProtocolName && "Missing protocol identifier"); |
Fariborz Jahanian | 05672a0 | 2007-10-09 18:03:53 +0000 | [diff] [blame] | 1188 | ObjcProtocolDecl *PDecl = ObjcProtocols[ProtocolName]; |
Fariborz Jahanian | 894c57f | 2007-09-21 15:40:54 +0000 | [diff] [blame] | 1189 | if (PDecl) { |
| 1190 | // Protocol already seen. Better be a forward protocol declaration |
Steve Naroff | 768f26e | 2007-10-02 20:26:23 +0000 | [diff] [blame] | 1191 | if (!PDecl->isForwardDecl()) |
Fariborz Jahanian | 894c57f | 2007-09-21 15:40:54 +0000 | [diff] [blame] | 1192 | Diag(ProtocolLoc, diag::err_duplicate_protocol_def, |
| 1193 | ProtocolName->getName()); |
| 1194 | else { |
Steve Naroff | 768f26e | 2007-10-02 20:26:23 +0000 | [diff] [blame] | 1195 | PDecl->setForwardDecl(false); |
Fariborz Jahanian | 894c57f | 2007-09-21 15:40:54 +0000 | [diff] [blame] | 1196 | PDecl->AllocReferencedProtocols(NumProtoRefs); |
| 1197 | } |
| 1198 | } |
| 1199 | else { |
| 1200 | PDecl = new ObjcProtocolDecl(AtProtoInterfaceLoc, NumProtoRefs, |
| 1201 | ProtocolName); |
Fariborz Jahanian | 05672a0 | 2007-10-09 18:03:53 +0000 | [diff] [blame] | 1202 | ObjcProtocols[ProtocolName] = PDecl; |
Fariborz Jahanian | 894c57f | 2007-09-21 15:40:54 +0000 | [diff] [blame] | 1203 | } |
| 1204 | |
Steve Naroff | 423cb56 | 2007-10-30 13:30:57 +0000 | [diff] [blame] | 1205 | if (NumProtoRefs) { |
| 1206 | /// Check then save referenced protocols |
| 1207 | for (unsigned int i = 0; i != NumProtoRefs; i++) { |
| 1208 | ObjcProtocolDecl* RefPDecl = ObjcProtocols[ProtoRefNames[i]]; |
| 1209 | if (!RefPDecl || RefPDecl->isForwardDecl()) |
| 1210 | Diag(ProtocolLoc, diag::err_undef_protocolref, |
| 1211 | ProtoRefNames[i]->getName(), |
| 1212 | ProtocolName->getName()); |
| 1213 | PDecl->setReferencedProtocols((int)i, RefPDecl); |
| 1214 | } |
| 1215 | PDecl->setLocEnd(EndProtoLoc); |
Fariborz Jahanian | 894c57f | 2007-09-21 15:40:54 +0000 | [diff] [blame] | 1216 | } |
Fariborz Jahanian | 25e077d | 2007-09-17 21:07:36 +0000 | [diff] [blame] | 1217 | return PDecl; |
| 1218 | } |
| 1219 | |
Fariborz Jahanian | 4b6c905 | 2007-10-11 00:55:41 +0000 | [diff] [blame] | 1220 | /// FindProtocolDeclaration - This routine looks up protocols and |
| 1221 | /// issuer error if they are not declared. It returns list of protocol |
| 1222 | /// declarations in its 'Protocols' argument. |
| 1223 | void |
| 1224 | Sema::FindProtocolDeclaration(SourceLocation TypeLoc, |
| 1225 | IdentifierInfo **ProtocolId, |
| 1226 | unsigned NumProtocols, |
| 1227 | llvm::SmallVector<DeclTy *,8> &Protocols) { |
Fariborz Jahanian | 245f92a | 2007-10-05 21:01:53 +0000 | [diff] [blame] | 1228 | for (unsigned i = 0; i != NumProtocols; ++i) { |
Fariborz Jahanian | 05672a0 | 2007-10-09 18:03:53 +0000 | [diff] [blame] | 1229 | ObjcProtocolDecl *PDecl = ObjcProtocols[ProtocolId[i]]; |
Fariborz Jahanian | 245f92a | 2007-10-05 21:01:53 +0000 | [diff] [blame] | 1230 | if (!PDecl) |
| 1231 | Diag(TypeLoc, diag::err_undeclared_protocol, |
| 1232 | ProtocolId[i]->getName()); |
Fariborz Jahanian | 4b6c905 | 2007-10-11 00:55:41 +0000 | [diff] [blame] | 1233 | else |
| 1234 | Protocols.push_back(PDecl); |
Fariborz Jahanian | 245f92a | 2007-10-05 21:01:53 +0000 | [diff] [blame] | 1235 | } |
Fariborz Jahanian | 245f92a | 2007-10-05 21:01:53 +0000 | [diff] [blame] | 1236 | } |
| 1237 | |
Steve Naroff | 37e58d1 | 2007-10-02 22:39:18 +0000 | [diff] [blame] | 1238 | /// ActOnForwardProtocolDeclaration - |
Fariborz Jahanian | 894c57f | 2007-09-21 15:40:54 +0000 | [diff] [blame] | 1239 | Action::DeclTy * |
Steve Naroff | e440eb8 | 2007-10-10 17:32:04 +0000 | [diff] [blame] | 1240 | Sema::ActOnForwardProtocolDeclaration(SourceLocation AtProtocolLoc, |
Fariborz Jahanian | 894c57f | 2007-09-21 15:40:54 +0000 | [diff] [blame] | 1241 | IdentifierInfo **IdentList, unsigned NumElts) { |
Chris Lattner | b97de3e | 2007-10-06 20:05:59 +0000 | [diff] [blame] | 1242 | llvm::SmallVector<ObjcProtocolDecl*, 32> Protocols; |
Fariborz Jahanian | 894c57f | 2007-09-21 15:40:54 +0000 | [diff] [blame] | 1243 | |
| 1244 | for (unsigned i = 0; i != NumElts; ++i) { |
Chris Lattner | 60c5218 | 2007-10-07 07:05:08 +0000 | [diff] [blame] | 1245 | IdentifierInfo *P = IdentList[i]; |
Fariborz Jahanian | 05672a0 | 2007-10-09 18:03:53 +0000 | [diff] [blame] | 1246 | ObjcProtocolDecl *PDecl = ObjcProtocols[P]; |
Chris Lattner | 60c5218 | 2007-10-07 07:05:08 +0000 | [diff] [blame] | 1247 | if (!PDecl) { // Not already seen? |
| 1248 | // FIXME: Pass in the location of the identifier! |
| 1249 | PDecl = new ObjcProtocolDecl(AtProtocolLoc, 0, P, true); |
Fariborz Jahanian | 05672a0 | 2007-10-09 18:03:53 +0000 | [diff] [blame] | 1250 | ObjcProtocols[P] = PDecl; |
Fariborz Jahanian | 894c57f | 2007-09-21 15:40:54 +0000 | [diff] [blame] | 1251 | } |
Fariborz Jahanian | 894c57f | 2007-09-21 15:40:54 +0000 | [diff] [blame] | 1252 | |
Chris Lattner | b97de3e | 2007-10-06 20:05:59 +0000 | [diff] [blame] | 1253 | Protocols.push_back(PDecl); |
Fariborz Jahanian | 894c57f | 2007-09-21 15:40:54 +0000 | [diff] [blame] | 1254 | } |
Chris Lattner | b97de3e | 2007-10-06 20:05:59 +0000 | [diff] [blame] | 1255 | return new ObjcForwardProtocolDecl(AtProtocolLoc, |
| 1256 | &Protocols[0], Protocols.size()); |
Fariborz Jahanian | 894c57f | 2007-09-21 15:40:54 +0000 | [diff] [blame] | 1257 | } |
| 1258 | |
Steve Naroff | e440eb8 | 2007-10-10 17:32:04 +0000 | [diff] [blame] | 1259 | Sema::DeclTy *Sema::ActOnStartCategoryInterface( |
Fariborz Jahanian | 3f5faf7 | 2007-10-04 00:45:27 +0000 | [diff] [blame] | 1260 | SourceLocation AtInterfaceLoc, |
Fariborz Jahanian | fd225cc | 2007-09-18 20:26:58 +0000 | [diff] [blame] | 1261 | IdentifierInfo *ClassName, SourceLocation ClassLoc, |
| 1262 | IdentifierInfo *CategoryName, SourceLocation CategoryLoc, |
Steve Naroff | 423cb56 | 2007-10-30 13:30:57 +0000 | [diff] [blame] | 1263 | IdentifierInfo **ProtoRefNames, unsigned NumProtoRefs, |
| 1264 | SourceLocation EndProtoLoc) { |
Chris Lattner | fd5de47 | 2007-10-06 22:53:46 +0000 | [diff] [blame] | 1265 | ObjcInterfaceDecl *IDecl = getObjCInterfaceDecl(ClassName); |
Fariborz Jahanian | 22d71d6 | 2007-10-09 17:05:22 +0000 | [diff] [blame] | 1266 | |
Fariborz Jahanian | b27c156 | 2007-09-22 00:01:35 +0000 | [diff] [blame] | 1267 | /// Check that class of this category is already completely declared. |
Fariborz Jahanian | 0332b6c | 2007-10-08 16:07:03 +0000 | [diff] [blame] | 1268 | if (!IDecl || IDecl->isForwardDecl()) { |
Fariborz Jahanian | b27c156 | 2007-09-22 00:01:35 +0000 | [diff] [blame] | 1269 | Diag(ClassLoc, diag::err_undef_interface, ClassName->getName()); |
Fariborz Jahanian | 22d71d6 | 2007-10-09 17:05:22 +0000 | [diff] [blame] | 1270 | return 0; |
Fariborz Jahanian | 0332b6c | 2007-10-08 16:07:03 +0000 | [diff] [blame] | 1271 | } |
Fariborz Jahanian | 8fe5c2a | 2007-10-09 18:22:59 +0000 | [diff] [blame] | 1272 | ObjcCategoryDecl *CDecl = new ObjcCategoryDecl(AtInterfaceLoc, NumProtoRefs, |
| 1273 | CategoryName); |
| 1274 | CDecl->setClassInterface(IDecl); |
| 1275 | /// Check for duplicate interface declaration for this category |
| 1276 | ObjcCategoryDecl *CDeclChain; |
Steve Naroff | 3d58138 | 2007-10-14 18:27:41 +0000 | [diff] [blame] | 1277 | for (CDeclChain = IDecl->getCategoryList(); CDeclChain; |
Fariborz Jahanian | 8fe5c2a | 2007-10-09 18:22:59 +0000 | [diff] [blame] | 1278 | CDeclChain = CDeclChain->getNextClassCategory()) { |
| 1279 | if (CDeclChain->getIdentifier() == CategoryName) { |
| 1280 | Diag(CategoryLoc, diag::err_dup_category_def, ClassName->getName(), |
| 1281 | CategoryName->getName()); |
| 1282 | break; |
Fariborz Jahanian | b27c156 | 2007-09-22 00:01:35 +0000 | [diff] [blame] | 1283 | } |
Fariborz Jahanian | b27c156 | 2007-09-22 00:01:35 +0000 | [diff] [blame] | 1284 | } |
Fariborz Jahanian | 8fe5c2a | 2007-10-09 18:22:59 +0000 | [diff] [blame] | 1285 | if (!CDeclChain) |
| 1286 | CDecl->insertNextClassCategory(); |
| 1287 | |
Steve Naroff | 423cb56 | 2007-10-30 13:30:57 +0000 | [diff] [blame] | 1288 | if (NumProtoRefs) { |
| 1289 | /// Check then save referenced protocols |
| 1290 | for (unsigned int i = 0; i != NumProtoRefs; i++) { |
| 1291 | ObjcProtocolDecl* RefPDecl = ObjcProtocols[ProtoRefNames[i]]; |
| 1292 | if (!RefPDecl || RefPDecl->isForwardDecl()) { |
| 1293 | Diag(CategoryLoc, diag::err_undef_protocolref, |
| 1294 | ProtoRefNames[i]->getName(), |
| 1295 | CategoryName->getName()); |
| 1296 | } |
| 1297 | CDecl->setCatReferencedProtocols((int)i, RefPDecl); |
Fariborz Jahanian | 0332b6c | 2007-10-08 16:07:03 +0000 | [diff] [blame] | 1298 | } |
Steve Naroff | 423cb56 | 2007-10-30 13:30:57 +0000 | [diff] [blame] | 1299 | CDecl->setLocEnd(EndProtoLoc); |
Fariborz Jahanian | b27c156 | 2007-09-22 00:01:35 +0000 | [diff] [blame] | 1300 | } |
Fariborz Jahanian | 22d71d6 | 2007-10-09 17:05:22 +0000 | [diff] [blame] | 1301 | return CDecl; |
Fariborz Jahanian | fd225cc | 2007-09-18 20:26:58 +0000 | [diff] [blame] | 1302 | } |
Fariborz Jahanian | bd51b87 | 2007-09-20 20:26:44 +0000 | [diff] [blame] | 1303 | |
Steve Naroff | 3a165b0 | 2007-10-03 21:00:46 +0000 | [diff] [blame] | 1304 | /// ActOnStartCategoryImplementation - Perform semantic checks on the |
Fariborz Jahanian | 8f3fde0 | 2007-10-02 16:38:50 +0000 | [diff] [blame] | 1305 | /// category implementation declaration and build an ObjcCategoryImplDecl |
| 1306 | /// object. |
Steve Naroff | e440eb8 | 2007-10-10 17:32:04 +0000 | [diff] [blame] | 1307 | Sema::DeclTy *Sema::ActOnStartCategoryImplementation( |
Fariborz Jahanian | 8f3fde0 | 2007-10-02 16:38:50 +0000 | [diff] [blame] | 1308 | SourceLocation AtCatImplLoc, |
| 1309 | IdentifierInfo *ClassName, SourceLocation ClassLoc, |
| 1310 | IdentifierInfo *CatName, SourceLocation CatLoc) { |
Steve Naroff | 6a8a9a4 | 2007-10-02 20:01:56 +0000 | [diff] [blame] | 1311 | ObjcInterfaceDecl *IDecl = getObjCInterfaceDecl(ClassName); |
Fariborz Jahanian | 8f3fde0 | 2007-10-02 16:38:50 +0000 | [diff] [blame] | 1312 | ObjcCategoryImplDecl *CDecl = new ObjcCategoryImplDecl(AtCatImplLoc, |
Chris Lattner | 6a0e89e | 2007-10-06 23:12:31 +0000 | [diff] [blame] | 1313 | CatName, IDecl); |
Fariborz Jahanian | 8f3fde0 | 2007-10-02 16:38:50 +0000 | [diff] [blame] | 1314 | /// Check that class of this category is already completely declared. |
Steve Naroff | 768f26e | 2007-10-02 20:26:23 +0000 | [diff] [blame] | 1315 | if (!IDecl || IDecl->isForwardDecl()) |
Fariborz Jahanian | 8f3fde0 | 2007-10-02 16:38:50 +0000 | [diff] [blame] | 1316 | Diag(ClassLoc, diag::err_undef_interface, ClassName->getName()); |
Steve Naroff | 8ee529b | 2007-10-31 18:42:27 +0000 | [diff] [blame] | 1317 | |
Fariborz Jahanian | 8f3fde0 | 2007-10-02 16:38:50 +0000 | [diff] [blame] | 1318 | /// TODO: Check that CatName, category name, is not used in another |
| 1319 | // implementation. |
| 1320 | return CDecl; |
| 1321 | } |
| 1322 | |
Steve Naroff | e440eb8 | 2007-10-10 17:32:04 +0000 | [diff] [blame] | 1323 | Sema::DeclTy *Sema::ActOnStartClassImplementation( |
Fariborz Jahanian | ccb4f31 | 2007-09-25 18:38:09 +0000 | [diff] [blame] | 1324 | SourceLocation AtClassImplLoc, |
| 1325 | IdentifierInfo *ClassName, SourceLocation ClassLoc, |
| 1326 | IdentifierInfo *SuperClassname, |
| 1327 | SourceLocation SuperClassLoc) { |
| 1328 | ObjcInterfaceDecl* IDecl = 0; |
| 1329 | // Check for another declaration kind with the same name. |
Fariborz Jahanian | 4cabdfc | 2007-10-12 19:38:20 +0000 | [diff] [blame] | 1330 | ScopedDecl *PrevDecl = LookupInterfaceDecl(ClassName); |
Fariborz Jahanian | ccb4f31 | 2007-09-25 18:38:09 +0000 | [diff] [blame] | 1331 | if (PrevDecl && !isa<ObjcInterfaceDecl>(PrevDecl)) { |
| 1332 | Diag(ClassLoc, diag::err_redefinition_different_kind, |
| 1333 | ClassName->getName()); |
| 1334 | Diag(PrevDecl->getLocation(), diag::err_previous_definition); |
| 1335 | } |
| 1336 | else { |
| 1337 | // Is there an interface declaration of this class; if not, warn! |
Fariborz Jahanian | 4cabdfc | 2007-10-12 19:38:20 +0000 | [diff] [blame] | 1338 | IDecl = dyn_cast_or_null<ObjcInterfaceDecl>(PrevDecl); |
Fariborz Jahanian | ccb4f31 | 2007-09-25 18:38:09 +0000 | [diff] [blame] | 1339 | if (!IDecl) |
| 1340 | Diag(ClassLoc, diag::warn_undef_interface, ClassName->getName()); |
| 1341 | } |
| 1342 | |
| 1343 | // Check that super class name is valid class name |
| 1344 | ObjcInterfaceDecl* SDecl = 0; |
| 1345 | if (SuperClassname) { |
| 1346 | // Check if a different kind of symbol declared in this scope. |
Fariborz Jahanian | 4cabdfc | 2007-10-12 19:38:20 +0000 | [diff] [blame] | 1347 | PrevDecl = LookupInterfaceDecl(SuperClassname); |
Fariborz Jahanian | 05672a0 | 2007-10-09 18:03:53 +0000 | [diff] [blame] | 1348 | if (PrevDecl && !isa<ObjcInterfaceDecl>(PrevDecl)) { |
Fariborz Jahanian | ccb4f31 | 2007-09-25 18:38:09 +0000 | [diff] [blame] | 1349 | Diag(SuperClassLoc, diag::err_redefinition_different_kind, |
| 1350 | SuperClassname->getName()); |
| 1351 | Diag(PrevDecl->getLocation(), diag::err_previous_definition); |
| 1352 | } |
| 1353 | else { |
Fariborz Jahanian | 4cabdfc | 2007-10-12 19:38:20 +0000 | [diff] [blame] | 1354 | SDecl = dyn_cast_or_null<ObjcInterfaceDecl>(PrevDecl); |
Fariborz Jahanian | ccb4f31 | 2007-09-25 18:38:09 +0000 | [diff] [blame] | 1355 | if (!SDecl) |
| 1356 | Diag(SuperClassLoc, diag::err_undef_superclass, |
| 1357 | SuperClassname->getName(), ClassName->getName()); |
| 1358 | else if (IDecl && IDecl->getSuperClass() != SDecl) { |
| 1359 | // This implementation and its interface do not have the same |
| 1360 | // super class. |
| 1361 | Diag(SuperClassLoc, diag::err_conflicting_super_class, |
Fariborz Jahanian | 4cabdfc | 2007-10-12 19:38:20 +0000 | [diff] [blame] | 1362 | SDecl->getName()); |
Fariborz Jahanian | ccb4f31 | 2007-09-25 18:38:09 +0000 | [diff] [blame] | 1363 | Diag(SDecl->getLocation(), diag::err_previous_definition); |
| 1364 | } |
| 1365 | } |
| 1366 | } |
| 1367 | |
Fariborz Jahanian | 0da1c10 | 2007-09-25 21:00:20 +0000 | [diff] [blame] | 1368 | if (!IDecl) { |
| 1369 | // Legacy case of @implementation with no corresponding @interface. |
| 1370 | // Build, chain & install the interface decl into the identifier. |
Fariborz Jahanian | 3a3ca1b | 2007-10-31 18:48:14 +0000 | [diff] [blame] | 1371 | IDecl = new ObjcInterfaceDecl(AtClassImplLoc, 0, ClassName, |
| 1372 | false, true); |
Fariborz Jahanian | 0da1c10 | 2007-09-25 21:00:20 +0000 | [diff] [blame] | 1373 | IDecl->setNext(ClassName->getFETokenInfo<ScopedDecl>()); |
| 1374 | ClassName->setFETokenInfo(IDecl); |
Fariborz Jahanian | 7780d2d | 2007-10-26 20:50:24 +0000 | [diff] [blame] | 1375 | IDecl->setSuperClass(SDecl); |
Fariborz Jahanian | 3a3ca1b | 2007-10-31 18:48:14 +0000 | [diff] [blame] | 1376 | IDecl->setLocEnd(ClassLoc); |
Fariborz Jahanian | 0da1c10 | 2007-09-25 21:00:20 +0000 | [diff] [blame] | 1377 | |
Fariborz Jahanian | be127ba | 2007-10-15 19:16:57 +0000 | [diff] [blame] | 1378 | // Remember that this needs to be removed when the scope is popped. |
| 1379 | TUScope->AddDecl(IDecl); |
Fariborz Jahanian | 0da1c10 | 2007-09-25 21:00:20 +0000 | [diff] [blame] | 1380 | } |
Fariborz Jahanian | ccb4f31 | 2007-09-25 18:38:09 +0000 | [diff] [blame] | 1381 | |
Fariborz Jahanian | f4d331d | 2007-10-18 22:09:03 +0000 | [diff] [blame] | 1382 | ObjcImplementationDecl* IMPDecl = |
| 1383 | new ObjcImplementationDecl(AtClassImplLoc, ClassName, IDecl, SDecl); |
| 1384 | |
Fariborz Jahanian | ccb4f31 | 2007-09-25 18:38:09 +0000 | [diff] [blame] | 1385 | // Check that there is no duplicate implementation of this class. |
Steve Naroff | c43d868 | 2007-11-11 00:10:47 +0000 | [diff] [blame] | 1386 | if (ObjcImplementations[ClassName]) |
Chris Lattner | f387668 | 2007-10-07 01:13:46 +0000 | [diff] [blame] | 1387 | Diag(ClassLoc, diag::err_dup_implementation_class, ClassName->getName()); |
Steve Naroff | c43d868 | 2007-11-11 00:10:47 +0000 | [diff] [blame] | 1388 | else // add it to the list. |
| 1389 | ObjcImplementations[ClassName] = IMPDecl; |
Fariborz Jahanian | ccb4f31 | 2007-09-25 18:38:09 +0000 | [diff] [blame] | 1390 | return IMPDecl; |
| 1391 | } |
| 1392 | |
Steve Naroff | a5997c4 | 2007-10-02 21:43:37 +0000 | [diff] [blame] | 1393 | void Sema::CheckImplementationIvars(ObjcImplementationDecl *ImpDecl, |
Fariborz Jahanian | 3a3ca1b | 2007-10-31 18:48:14 +0000 | [diff] [blame] | 1394 | ObjcIvarDecl **ivars, unsigned numIvars, |
| 1395 | SourceLocation RBrace) { |
Steve Naroff | a5997c4 | 2007-10-02 21:43:37 +0000 | [diff] [blame] | 1396 | assert(ImpDecl && "missing implementation decl"); |
| 1397 | ObjcInterfaceDecl* IDecl = getObjCInterfaceDecl(ImpDecl->getIdentifier()); |
Fariborz Jahanian | 7780d2d | 2007-10-26 20:50:24 +0000 | [diff] [blame] | 1398 | if (!IDecl) |
Steve Naroff | a5997c4 | 2007-10-02 21:43:37 +0000 | [diff] [blame] | 1399 | return; |
Fariborz Jahanian | 7780d2d | 2007-10-26 20:50:24 +0000 | [diff] [blame] | 1400 | /// Check case of non-existing @interface decl. |
| 1401 | /// (legacy objective-c @implementation decl without an @interface decl). |
| 1402 | /// Add implementations's ivar to the synthesize class's ivar list. |
| 1403 | if (IDecl->ImplicitInterfaceDecl()) { |
Fariborz Jahanian | 3a3ca1b | 2007-10-31 18:48:14 +0000 | [diff] [blame] | 1404 | IDecl->addInstanceVariablesToClass(ivars, numIvars, RBrace); |
Fariborz Jahanian | 7780d2d | 2007-10-26 20:50:24 +0000 | [diff] [blame] | 1405 | return; |
| 1406 | } |
Fariborz Jahanian | f1de0ca | 2007-10-31 23:53:01 +0000 | [diff] [blame] | 1407 | // If implementation has empty ivar list, just return. |
| 1408 | if (numIvars == 0) |
| 1409 | return; |
Fariborz Jahanian | 7780d2d | 2007-10-26 20:50:24 +0000 | [diff] [blame] | 1410 | |
Fariborz Jahanian | d0b90bf | 2007-09-26 18:27:25 +0000 | [diff] [blame] | 1411 | assert(ivars && "missing @implementation ivars"); |
| 1412 | |
Steve Naroff | a5997c4 | 2007-10-02 21:43:37 +0000 | [diff] [blame] | 1413 | // Check interface's Ivar list against those in the implementation. |
| 1414 | // names and types must match. |
| 1415 | // |
Steve Naroff | 0330071 | 2007-11-12 13:56:41 +0000 | [diff] [blame] | 1416 | ObjcIvarDecl** IntfIvars = IDecl->getInstanceVariables(); |
| 1417 | int IntfNumIvars = IDecl->getNumInstanceVariables(); |
Fariborz Jahanian | d0b90bf | 2007-09-26 18:27:25 +0000 | [diff] [blame] | 1418 | unsigned j = 0; |
| 1419 | bool err = false; |
| 1420 | while (numIvars > 0 && IntfNumIvars > 0) { |
| 1421 | ObjcIvarDecl* ImplIvar = ivars[j]; |
| 1422 | ObjcIvarDecl* ClsIvar = IntfIvars[j++]; |
| 1423 | assert (ImplIvar && "missing implementation ivar"); |
| 1424 | assert (ClsIvar && "missing class ivar"); |
| 1425 | if (ImplIvar->getCanonicalType() != ClsIvar->getCanonicalType()) { |
| 1426 | Diag(ImplIvar->getLocation(), diag::err_conflicting_ivar_type, |
| 1427 | ImplIvar->getIdentifier()->getName()); |
| 1428 | Diag(ClsIvar->getLocation(), diag::err_previous_definition, |
| 1429 | ClsIvar->getIdentifier()->getName()); |
| 1430 | } |
| 1431 | // TODO: Two mismatched (unequal width) Ivar bitfields should be diagnosed |
| 1432 | // as error. |
| 1433 | else if (ImplIvar->getIdentifier() != ClsIvar->getIdentifier()) { |
| 1434 | Diag(ImplIvar->getLocation(), diag::err_conflicting_ivar_name, |
| 1435 | ImplIvar->getIdentifier()->getName()); |
| 1436 | Diag(ClsIvar->getLocation(), diag::err_previous_definition, |
| 1437 | ClsIvar->getIdentifier()->getName()); |
| 1438 | err = true; |
| 1439 | break; |
| 1440 | } |
| 1441 | --numIvars; |
| 1442 | --IntfNumIvars; |
| 1443 | } |
| 1444 | if (!err && (numIvars > 0 || IntfNumIvars > 0)) |
| 1445 | Diag(numIvars > 0 ? ivars[j]->getLocation() : IntfIvars[j]->getLocation(), |
| 1446 | diag::err_inconsistant_ivar); |
| 1447 | |
| 1448 | } |
| 1449 | |
Fariborz Jahanian | 00ae8d5 | 2007-09-28 17:40:07 +0000 | [diff] [blame] | 1450 | /// CheckProtocolMethodDefs - This routine checks unimpletented methods |
| 1451 | /// Declared in protocol, and those referenced by it. |
Fariborz Jahanian | 8c74fa4 | 2007-09-29 17:14:55 +0000 | [diff] [blame] | 1452 | void Sema::CheckProtocolMethodDefs(ObjcProtocolDecl *PDecl, |
Fariborz Jahanian | ca3adf7 | 2007-10-02 20:06:01 +0000 | [diff] [blame] | 1453 | bool& IncompleteImpl, |
Steve Naroff | eefc418 | 2007-10-08 21:05:34 +0000 | [diff] [blame] | 1454 | const llvm::DenseSet<Selector> &InsMap, |
Chris Lattner | 8599426 | 2007-10-05 20:15:24 +0000 | [diff] [blame] | 1455 | const llvm::DenseSet<Selector> &ClsMap) { |
Fariborz Jahanian | 00ae8d5 | 2007-09-28 17:40:07 +0000 | [diff] [blame] | 1456 | // check unimplemented instance methods. |
Fariborz Jahanian | 7ed9e0f | 2007-10-02 22:05:16 +0000 | [diff] [blame] | 1457 | ObjcMethodDecl** methods = PDecl->getInstanceMethods(); |
Fariborz Jahanian | 85ff264 | 2007-10-05 18:00:57 +0000 | [diff] [blame] | 1458 | for (int j = 0; j < PDecl->getNumInstanceMethods(); j++) { |
Steve Naroff | eefc418 | 2007-10-08 21:05:34 +0000 | [diff] [blame] | 1459 | if (!InsMap.count(methods[j]->getSelector())) { |
Fariborz Jahanian | 8c74fa4 | 2007-09-29 17:14:55 +0000 | [diff] [blame] | 1460 | Diag(methods[j]->getLocation(), diag::warn_undef_method_impl, |
Chris Lattner | f836e3f | 2007-10-07 01:33:16 +0000 | [diff] [blame] | 1461 | methods[j]->getSelector().getName()); |
Fariborz Jahanian | ca3adf7 | 2007-10-02 20:06:01 +0000 | [diff] [blame] | 1462 | IncompleteImpl = true; |
Fariborz Jahanian | 00ae8d5 | 2007-09-28 17:40:07 +0000 | [diff] [blame] | 1463 | } |
Fariborz Jahanian | 85ff264 | 2007-10-05 18:00:57 +0000 | [diff] [blame] | 1464 | } |
Fariborz Jahanian | 00ae8d5 | 2007-09-28 17:40:07 +0000 | [diff] [blame] | 1465 | // check unimplemented class methods |
Fariborz Jahanian | 7ed9e0f | 2007-10-02 22:05:16 +0000 | [diff] [blame] | 1466 | methods = PDecl->getClassMethods(); |
| 1467 | for (int j = 0; j < PDecl->getNumClassMethods(); j++) |
Chris Lattner | 8599426 | 2007-10-05 20:15:24 +0000 | [diff] [blame] | 1468 | if (!ClsMap.count(methods[j]->getSelector())) { |
Fariborz Jahanian | 8c74fa4 | 2007-09-29 17:14:55 +0000 | [diff] [blame] | 1469 | Diag(methods[j]->getLocation(), diag::warn_undef_method_impl, |
Chris Lattner | f836e3f | 2007-10-07 01:33:16 +0000 | [diff] [blame] | 1470 | methods[j]->getSelector().getName()); |
Fariborz Jahanian | ca3adf7 | 2007-10-02 20:06:01 +0000 | [diff] [blame] | 1471 | IncompleteImpl = true; |
Fariborz Jahanian | 00ae8d5 | 2007-09-28 17:40:07 +0000 | [diff] [blame] | 1472 | } |
Fariborz Jahanian | d0b0154 | 2007-09-27 18:57:03 +0000 | [diff] [blame] | 1473 | |
Fariborz Jahanian | 00ae8d5 | 2007-09-28 17:40:07 +0000 | [diff] [blame] | 1474 | // Check on this protocols's referenced protocols, recursively |
| 1475 | ObjcProtocolDecl** RefPDecl = PDecl->getReferencedProtocols(); |
| 1476 | for (int i = 0; i < PDecl->getNumReferencedProtocols(); i++) |
Fariborz Jahanian | ca3adf7 | 2007-10-02 20:06:01 +0000 | [diff] [blame] | 1477 | CheckProtocolMethodDefs(RefPDecl[i], IncompleteImpl, InsMap, ClsMap); |
Fariborz Jahanian | 00ae8d5 | 2007-09-28 17:40:07 +0000 | [diff] [blame] | 1478 | } |
| 1479 | |
Fariborz Jahanian | 8c74fa4 | 2007-09-29 17:14:55 +0000 | [diff] [blame] | 1480 | void Sema::ImplMethodsVsClassMethods(ObjcImplementationDecl* IMPDecl, |
| 1481 | ObjcInterfaceDecl* IDecl) { |
Steve Naroff | eefc418 | 2007-10-08 21:05:34 +0000 | [diff] [blame] | 1482 | llvm::DenseSet<Selector> InsMap; |
Fariborz Jahanian | d0b0154 | 2007-09-27 18:57:03 +0000 | [diff] [blame] | 1483 | // Check and see if instance methods in class interface have been |
| 1484 | // implemented in the implementation class. |
Steve Naroff | 0416fb9 | 2007-11-11 17:19:15 +0000 | [diff] [blame] | 1485 | ObjcMethodDecl *const*methods = IMPDecl->getInstanceMethods(); |
Fariborz Jahanian | 85ff264 | 2007-10-05 18:00:57 +0000 | [diff] [blame] | 1486 | for (int i=0; i < IMPDecl->getNumInstanceMethods(); i++) |
Steve Naroff | eefc418 | 2007-10-08 21:05:34 +0000 | [diff] [blame] | 1487 | InsMap.insert(methods[i]->getSelector()); |
Fariborz Jahanian | d0b0154 | 2007-09-27 18:57:03 +0000 | [diff] [blame] | 1488 | |
Fariborz Jahanian | ca3adf7 | 2007-10-02 20:06:01 +0000 | [diff] [blame] | 1489 | bool IncompleteImpl = false; |
Fariborz Jahanian | 7ed9e0f | 2007-10-02 22:05:16 +0000 | [diff] [blame] | 1490 | methods = IDecl->getInstanceMethods(); |
| 1491 | for (int j = 0; j < IDecl->getNumInstanceMethods(); j++) |
Steve Naroff | eefc418 | 2007-10-08 21:05:34 +0000 | [diff] [blame] | 1492 | if (!InsMap.count(methods[j]->getSelector())) { |
Fariborz Jahanian | 8c74fa4 | 2007-09-29 17:14:55 +0000 | [diff] [blame] | 1493 | Diag(methods[j]->getLocation(), diag::warn_undef_method_impl, |
Chris Lattner | f836e3f | 2007-10-07 01:33:16 +0000 | [diff] [blame] | 1494 | methods[j]->getSelector().getName()); |
Fariborz Jahanian | ca3adf7 | 2007-10-02 20:06:01 +0000 | [diff] [blame] | 1495 | IncompleteImpl = true; |
Fariborz Jahanian | d0b0154 | 2007-09-27 18:57:03 +0000 | [diff] [blame] | 1496 | } |
Chris Lattner | 8599426 | 2007-10-05 20:15:24 +0000 | [diff] [blame] | 1497 | llvm::DenseSet<Selector> ClsMap; |
Fariborz Jahanian | d0b0154 | 2007-09-27 18:57:03 +0000 | [diff] [blame] | 1498 | // Check and see if class methods in class interface have been |
| 1499 | // implemented in the implementation class. |
Fariborz Jahanian | 7ed9e0f | 2007-10-02 22:05:16 +0000 | [diff] [blame] | 1500 | methods = IMPDecl->getClassMethods(); |
Fariborz Jahanian | 85ff264 | 2007-10-05 18:00:57 +0000 | [diff] [blame] | 1501 | for (int i=0; i < IMPDecl->getNumClassMethods(); i++) |
Chris Lattner | 8599426 | 2007-10-05 20:15:24 +0000 | [diff] [blame] | 1502 | ClsMap.insert(methods[i]->getSelector()); |
Fariborz Jahanian | d0b0154 | 2007-09-27 18:57:03 +0000 | [diff] [blame] | 1503 | |
Fariborz Jahanian | 7ed9e0f | 2007-10-02 22:05:16 +0000 | [diff] [blame] | 1504 | methods = IDecl->getClassMethods(); |
| 1505 | for (int j = 0; j < IDecl->getNumClassMethods(); j++) |
Chris Lattner | 8599426 | 2007-10-05 20:15:24 +0000 | [diff] [blame] | 1506 | if (!ClsMap.count(methods[j]->getSelector())) { |
Fariborz Jahanian | 8c74fa4 | 2007-09-29 17:14:55 +0000 | [diff] [blame] | 1507 | Diag(methods[j]->getLocation(), diag::warn_undef_method_impl, |
Chris Lattner | f836e3f | 2007-10-07 01:33:16 +0000 | [diff] [blame] | 1508 | methods[j]->getSelector().getName()); |
Fariborz Jahanian | ca3adf7 | 2007-10-02 20:06:01 +0000 | [diff] [blame] | 1509 | IncompleteImpl = true; |
Fariborz Jahanian | d0b0154 | 2007-09-27 18:57:03 +0000 | [diff] [blame] | 1510 | } |
Fariborz Jahanian | 00ae8d5 | 2007-09-28 17:40:07 +0000 | [diff] [blame] | 1511 | |
| 1512 | // Check the protocol list for unimplemented methods in the @implementation |
| 1513 | // class. |
Fariborz Jahanian | 7ed9e0f | 2007-10-02 22:05:16 +0000 | [diff] [blame] | 1514 | ObjcProtocolDecl** protocols = IDecl->getReferencedProtocols(); |
Chris Lattner | 8599426 | 2007-10-05 20:15:24 +0000 | [diff] [blame] | 1515 | for (int i = 0; i < IDecl->getNumIntfRefProtocols(); i++) |
| 1516 | CheckProtocolMethodDefs(protocols[i], IncompleteImpl, InsMap, ClsMap); |
| 1517 | |
Fariborz Jahanian | ca3adf7 | 2007-10-02 20:06:01 +0000 | [diff] [blame] | 1518 | if (IncompleteImpl) |
Fariborz Jahanian | 4b6df3f | 2007-10-04 00:22:33 +0000 | [diff] [blame] | 1519 | Diag(IMPDecl->getLocation(), diag::warn_incomplete_impl_class, |
| 1520 | IMPDecl->getName()); |
Fariborz Jahanian | 8f3fde0 | 2007-10-02 16:38:50 +0000 | [diff] [blame] | 1521 | } |
| 1522 | |
| 1523 | /// ImplCategoryMethodsVsIntfMethods - Checks that methods declared in the |
| 1524 | /// category interface is implemented in the category @implementation. |
| 1525 | void Sema::ImplCategoryMethodsVsIntfMethods(ObjcCategoryImplDecl *CatImplDecl, |
| 1526 | ObjcCategoryDecl *CatClassDecl) { |
Steve Naroff | eefc418 | 2007-10-08 21:05:34 +0000 | [diff] [blame] | 1527 | llvm::DenseSet<Selector> InsMap; |
Fariborz Jahanian | 8f3fde0 | 2007-10-02 16:38:50 +0000 | [diff] [blame] | 1528 | // Check and see if instance methods in category interface have been |
| 1529 | // implemented in its implementation class. |
Steve Naroff | e1e6c0d | 2007-11-12 22:05:31 +0000 | [diff] [blame] | 1530 | ObjcMethodDecl *const*methods = CatImplDecl->getInstanceMethods(); |
Fariborz Jahanian | 85ff264 | 2007-10-05 18:00:57 +0000 | [diff] [blame] | 1531 | for (int i=0; i < CatImplDecl->getNumInstanceMethods(); i++) |
Steve Naroff | eefc418 | 2007-10-08 21:05:34 +0000 | [diff] [blame] | 1532 | InsMap.insert(methods[i]->getSelector()); |
Fariborz Jahanian | 8f3fde0 | 2007-10-02 16:38:50 +0000 | [diff] [blame] | 1533 | |
Fariborz Jahanian | ca3adf7 | 2007-10-02 20:06:01 +0000 | [diff] [blame] | 1534 | bool IncompleteImpl = false; |
Fariborz Jahanian | 7ed9e0f | 2007-10-02 22:05:16 +0000 | [diff] [blame] | 1535 | methods = CatClassDecl->getInstanceMethods(); |
| 1536 | for (int j = 0; j < CatClassDecl->getNumInstanceMethods(); j++) |
Steve Naroff | eefc418 | 2007-10-08 21:05:34 +0000 | [diff] [blame] | 1537 | if (!InsMap.count(methods[j]->getSelector())) { |
Fariborz Jahanian | 8f3fde0 | 2007-10-02 16:38:50 +0000 | [diff] [blame] | 1538 | Diag(methods[j]->getLocation(), diag::warn_undef_method_impl, |
Chris Lattner | f836e3f | 2007-10-07 01:33:16 +0000 | [diff] [blame] | 1539 | methods[j]->getSelector().getName()); |
Fariborz Jahanian | ca3adf7 | 2007-10-02 20:06:01 +0000 | [diff] [blame] | 1540 | IncompleteImpl = true; |
Fariborz Jahanian | 8f3fde0 | 2007-10-02 16:38:50 +0000 | [diff] [blame] | 1541 | } |
Chris Lattner | 8599426 | 2007-10-05 20:15:24 +0000 | [diff] [blame] | 1542 | llvm::DenseSet<Selector> ClsMap; |
Fariborz Jahanian | 8f3fde0 | 2007-10-02 16:38:50 +0000 | [diff] [blame] | 1543 | // Check and see if class methods in category interface have been |
| 1544 | // implemented in its implementation class. |
Fariborz Jahanian | 7ed9e0f | 2007-10-02 22:05:16 +0000 | [diff] [blame] | 1545 | methods = CatImplDecl->getClassMethods(); |
Fariborz Jahanian | 85ff264 | 2007-10-05 18:00:57 +0000 | [diff] [blame] | 1546 | for (int i=0; i < CatImplDecl->getNumClassMethods(); i++) |
Chris Lattner | 8599426 | 2007-10-05 20:15:24 +0000 | [diff] [blame] | 1547 | ClsMap.insert(methods[i]->getSelector()); |
Fariborz Jahanian | 8f3fde0 | 2007-10-02 16:38:50 +0000 | [diff] [blame] | 1548 | |
Fariborz Jahanian | 7ed9e0f | 2007-10-02 22:05:16 +0000 | [diff] [blame] | 1549 | methods = CatClassDecl->getClassMethods(); |
| 1550 | for (int j = 0; j < CatClassDecl->getNumClassMethods(); j++) |
Chris Lattner | 8599426 | 2007-10-05 20:15:24 +0000 | [diff] [blame] | 1551 | if (!ClsMap.count(methods[j]->getSelector())) { |
Fariborz Jahanian | 8f3fde0 | 2007-10-02 16:38:50 +0000 | [diff] [blame] | 1552 | Diag(methods[j]->getLocation(), diag::warn_undef_method_impl, |
Chris Lattner | f836e3f | 2007-10-07 01:33:16 +0000 | [diff] [blame] | 1553 | methods[j]->getSelector().getName()); |
Fariborz Jahanian | ca3adf7 | 2007-10-02 20:06:01 +0000 | [diff] [blame] | 1554 | IncompleteImpl = true; |
Fariborz Jahanian | 8f3fde0 | 2007-10-02 16:38:50 +0000 | [diff] [blame] | 1555 | } |
| 1556 | |
| 1557 | // Check the protocol list for unimplemented methods in the @implementation |
| 1558 | // class. |
Fariborz Jahanian | 7ed9e0f | 2007-10-02 22:05:16 +0000 | [diff] [blame] | 1559 | ObjcProtocolDecl** protocols = CatClassDecl->getReferencedProtocols(); |
| 1560 | for (int i = 0; i < CatClassDecl->getNumReferencedProtocols(); i++) { |
Fariborz Jahanian | 8f3fde0 | 2007-10-02 16:38:50 +0000 | [diff] [blame] | 1561 | ObjcProtocolDecl* PDecl = protocols[i]; |
Fariborz Jahanian | ca3adf7 | 2007-10-02 20:06:01 +0000 | [diff] [blame] | 1562 | CheckProtocolMethodDefs(PDecl, IncompleteImpl, InsMap, ClsMap); |
Fariborz Jahanian | 8f3fde0 | 2007-10-02 16:38:50 +0000 | [diff] [blame] | 1563 | } |
Fariborz Jahanian | ca3adf7 | 2007-10-02 20:06:01 +0000 | [diff] [blame] | 1564 | if (IncompleteImpl) |
Fariborz Jahanian | 4b6df3f | 2007-10-04 00:22:33 +0000 | [diff] [blame] | 1565 | Diag(CatImplDecl->getLocation(), diag::warn_incomplete_impl_category, |
Chris Lattner | fd5de47 | 2007-10-06 22:53:46 +0000 | [diff] [blame] | 1566 | CatClassDecl->getName()); |
Fariborz Jahanian | d0b0154 | 2007-09-27 18:57:03 +0000 | [diff] [blame] | 1567 | } |
| 1568 | |
Steve Naroff | 37e58d1 | 2007-10-02 22:39:18 +0000 | [diff] [blame] | 1569 | /// ActOnForwardClassDeclaration - |
Steve Naroff | 3536b44 | 2007-09-06 21:24:23 +0000 | [diff] [blame] | 1570 | Action::DeclTy * |
Steve Naroff | e440eb8 | 2007-10-10 17:32:04 +0000 | [diff] [blame] | 1571 | Sema::ActOnForwardClassDeclaration(SourceLocation AtClassLoc, |
Steve Naroff | 37e58d1 | 2007-10-02 22:39:18 +0000 | [diff] [blame] | 1572 | IdentifierInfo **IdentList, unsigned NumElts) |
| 1573 | { |
Chris Lattner | 7e62072 | 2007-10-06 20:08:36 +0000 | [diff] [blame] | 1574 | llvm::SmallVector<ObjcInterfaceDecl*, 32> Interfaces; |
| 1575 | |
Steve Naroff | 3536b44 | 2007-09-06 21:24:23 +0000 | [diff] [blame] | 1576 | for (unsigned i = 0; i != NumElts; ++i) { |
Fariborz Jahanian | be127ba | 2007-10-15 19:16:57 +0000 | [diff] [blame] | 1577 | // Check for another declaration kind with the same name. |
| 1578 | ScopedDecl *PrevDecl = LookupInterfaceDecl(IdentList[i]); |
| 1579 | if (PrevDecl && !isa<ObjcInterfaceDecl>(PrevDecl)) { |
| 1580 | Diag(AtClassLoc, diag::err_redefinition_different_kind, |
| 1581 | IdentList[i]->getName()); |
| 1582 | Diag(PrevDecl->getLocation(), diag::err_previous_definition); |
| 1583 | } |
| 1584 | ObjcInterfaceDecl *IDecl = dyn_cast_or_null<ObjcInterfaceDecl>(PrevDecl); |
Chris Lattner | 7e62072 | 2007-10-06 20:08:36 +0000 | [diff] [blame] | 1585 | if (!IDecl) { // Not already seen? Make a forward decl. |
Fariborz Jahanian | be127ba | 2007-10-15 19:16:57 +0000 | [diff] [blame] | 1586 | IDecl = new ObjcInterfaceDecl(AtClassLoc, 0, IdentList[i], true); |
Fariborz Jahanian | bd51b87 | 2007-09-20 20:26:44 +0000 | [diff] [blame] | 1587 | // Chain & install the interface decl into the identifier. |
| 1588 | IDecl->setNext(IdentList[i]->getFETokenInfo<ScopedDecl>()); |
| 1589 | IdentList[i]->setFETokenInfo(IDecl); |
Chris Lattner | 60c5218 | 2007-10-07 07:05:08 +0000 | [diff] [blame] | 1590 | |
| 1591 | // Remember that this needs to be removed when the scope is popped. |
Steve Naroff | e440eb8 | 2007-10-10 17:32:04 +0000 | [diff] [blame] | 1592 | TUScope->AddDecl(IDecl); |
Fariborz Jahanian | bd51b87 | 2007-09-20 20:26:44 +0000 | [diff] [blame] | 1593 | } |
Chris Lattner | 7e62072 | 2007-10-06 20:08:36 +0000 | [diff] [blame] | 1594 | |
| 1595 | Interfaces.push_back(IDecl); |
Steve Naroff | 3536b44 | 2007-09-06 21:24:23 +0000 | [diff] [blame] | 1596 | } |
Chris Lattner | 7e62072 | 2007-10-06 20:08:36 +0000 | [diff] [blame] | 1597 | |
| 1598 | return new ObjcClassDecl(AtClassLoc, &Interfaces[0], Interfaces.size()); |
Steve Naroff | 3536b44 | 2007-09-06 21:24:23 +0000 | [diff] [blame] | 1599 | } |
| 1600 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1601 | |
Steve Naroff | 08d92e4 | 2007-09-15 18:49:24 +0000 | [diff] [blame] | 1602 | /// ActOnTag - This is invoked when we see 'struct foo' or 'struct {'. In the |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1603 | /// former case, Name will be non-null. In the later case, Name will be null. |
| 1604 | /// TagType indicates what kind of tag this is. TK indicates whether this is a |
| 1605 | /// reference/declaration/definition of a tag. |
Steve Naroff | 08d92e4 | 2007-09-15 18:49:24 +0000 | [diff] [blame] | 1606 | Sema::DeclTy *Sema::ActOnTag(Scope *S, unsigned TagType, TagKind TK, |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1607 | SourceLocation KWLoc, IdentifierInfo *Name, |
| 1608 | SourceLocation NameLoc, AttributeList *Attr) { |
| 1609 | // If this is a use of an existing tag, it must have a name. |
| 1610 | assert((Name != 0 || TK == TK_Definition) && |
| 1611 | "Nameless record must be a definition!"); |
| 1612 | |
| 1613 | Decl::Kind Kind; |
| 1614 | switch (TagType) { |
| 1615 | default: assert(0 && "Unknown tag type!"); |
| 1616 | case DeclSpec::TST_struct: Kind = Decl::Struct; break; |
| 1617 | case DeclSpec::TST_union: Kind = Decl::Union; break; |
| 1618 | //case DeclSpec::TST_class: Kind = Decl::Class; break; |
| 1619 | case DeclSpec::TST_enum: Kind = Decl::Enum; break; |
| 1620 | } |
| 1621 | |
| 1622 | // If this is a named struct, check to see if there was a previous forward |
| 1623 | // declaration or definition. |
| 1624 | if (TagDecl *PrevDecl = |
| 1625 | dyn_cast_or_null<TagDecl>(LookupScopedDecl(Name, Decl::IDNS_Tag, |
| 1626 | NameLoc, S))) { |
| 1627 | |
| 1628 | // If this is a use of a previous tag, or if the tag is already declared in |
| 1629 | // the same scope (so that the definition/declaration completes or |
| 1630 | // rementions the tag), reuse the decl. |
| 1631 | if (TK == TK_Reference || S->isDeclScope(PrevDecl)) { |
| 1632 | // Make sure that this wasn't declared as an enum and now used as a struct |
| 1633 | // or something similar. |
| 1634 | if (PrevDecl->getKind() != Kind) { |
| 1635 | Diag(KWLoc, diag::err_use_with_wrong_tag, Name->getName()); |
| 1636 | Diag(PrevDecl->getLocation(), diag::err_previous_use); |
| 1637 | } |
| 1638 | |
| 1639 | // If this is a use or a forward declaration, we're good. |
| 1640 | if (TK != TK_Definition) |
| 1641 | return PrevDecl; |
| 1642 | |
| 1643 | // Diagnose attempts to redefine a tag. |
| 1644 | if (PrevDecl->isDefinition()) { |
| 1645 | Diag(NameLoc, diag::err_redefinition, Name->getName()); |
| 1646 | Diag(PrevDecl->getLocation(), diag::err_previous_definition); |
| 1647 | // If this is a redefinition, recover by making this struct be |
| 1648 | // anonymous, which will make any later references get the previous |
| 1649 | // definition. |
| 1650 | Name = 0; |
| 1651 | } else { |
| 1652 | // Okay, this is definition of a previously declared or referenced tag. |
| 1653 | // Move the location of the decl to be the definition site. |
| 1654 | PrevDecl->setLocation(NameLoc); |
| 1655 | return PrevDecl; |
| 1656 | } |
| 1657 | } |
| 1658 | // If we get here, this is a definition of a new struct type in a nested |
| 1659 | // scope, e.g. "struct foo; void bar() { struct foo; }", just create a new |
| 1660 | // type. |
| 1661 | } |
| 1662 | |
| 1663 | // If there is an identifier, use the location of the identifier as the |
| 1664 | // location of the decl, otherwise use the location of the struct/union |
| 1665 | // keyword. |
| 1666 | SourceLocation Loc = NameLoc.isValid() ? NameLoc : KWLoc; |
| 1667 | |
| 1668 | // Otherwise, if this is the first time we've seen this tag, create the decl. |
| 1669 | TagDecl *New; |
| 1670 | switch (Kind) { |
| 1671 | default: assert(0 && "Unknown tag kind!"); |
| 1672 | case Decl::Enum: |
| 1673 | // FIXME: Tag decls should be chained to any simultaneous vardecls, e.g.: |
| 1674 | // enum X { A, B, C } D; D should chain to X. |
| 1675 | New = new EnumDecl(Loc, Name, 0); |
| 1676 | // If this is an undefined enum, warn. |
| 1677 | if (TK != TK_Definition) Diag(Loc, diag::ext_forward_ref_enum); |
| 1678 | break; |
| 1679 | case Decl::Union: |
| 1680 | case Decl::Struct: |
| 1681 | case Decl::Class: |
| 1682 | // FIXME: Tag decls should be chained to any simultaneous vardecls, e.g.: |
| 1683 | // struct X { int A; } D; D should chain to X. |
| 1684 | New = new RecordDecl(Kind, Loc, Name, 0); |
| 1685 | break; |
| 1686 | } |
| 1687 | |
Steve Naroff | 1f64432 | 2007-11-28 22:54:11 +0000 | [diff] [blame] | 1688 | // For top-level tag definitions, make sure we chain the the tag decl to |
| 1689 | // the vardecl. This enables the AST streamer to see both X and D in the |
| 1690 | // following example: struct X { int A; } D; |
| 1691 | if (S->getParent() == 0) |
| 1692 | AddTopLevelDecl(New); |
| 1693 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1694 | // If this has an identifier, add it to the scope stack. |
| 1695 | if (Name) { |
Chris Lattner | 31e0572 | 2007-08-26 06:24:45 +0000 | [diff] [blame] | 1696 | // The scope passed in may not be a decl scope. Zip up the scope tree until |
| 1697 | // we find one that is. |
| 1698 | while ((S->getFlags() & Scope::DeclScope) == 0) |
| 1699 | S = S->getParent(); |
| 1700 | |
| 1701 | // Add it to the decl chain. |
Steve Naroff | c752d04 | 2007-09-13 18:10:37 +0000 | [diff] [blame] | 1702 | New->setNext(Name->getFETokenInfo<ScopedDecl>()); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1703 | Name->setFETokenInfo(New); |
| 1704 | S->AddDecl(New); |
| 1705 | } |
Steve Naroff | 1f64432 | 2007-11-28 22:54:11 +0000 | [diff] [blame] | 1706 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1707 | return New; |
| 1708 | } |
| 1709 | |
Steve Naroff | 08d92e4 | 2007-09-15 18:49:24 +0000 | [diff] [blame] | 1710 | /// ActOnField - Each field of a struct/union/class is passed into this in order |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1711 | /// to create a FieldDecl object for it. |
Steve Naroff | 08d92e4 | 2007-09-15 18:49:24 +0000 | [diff] [blame] | 1712 | Sema::DeclTy *Sema::ActOnField(Scope *S, DeclTy *TagDecl, |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1713 | SourceLocation DeclStart, |
| 1714 | Declarator &D, ExprTy *BitfieldWidth) { |
| 1715 | IdentifierInfo *II = D.getIdentifier(); |
| 1716 | Expr *BitWidth = (Expr*)BitfieldWidth; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1717 | SourceLocation Loc = DeclStart; |
| 1718 | if (II) Loc = D.getIdentifierLoc(); |
| 1719 | |
| 1720 | // FIXME: Unnamed fields can be handled in various different ways, for |
| 1721 | // example, unnamed unions inject all members into the struct namespace! |
| 1722 | |
| 1723 | |
| 1724 | if (BitWidth) { |
| 1725 | // TODO: Validate. |
| 1726 | //printf("WARNING: BITFIELDS IGNORED!\n"); |
| 1727 | |
| 1728 | // 6.7.2.1p3 |
| 1729 | // 6.7.2.1p4 |
| 1730 | |
| 1731 | } else { |
| 1732 | // Not a bitfield. |
| 1733 | |
| 1734 | // validate II. |
| 1735 | |
| 1736 | } |
| 1737 | |
| 1738 | QualType T = GetTypeForDeclarator(D, S); |
Steve Naroff | 5912a35 | 2007-08-28 20:14:24 +0000 | [diff] [blame] | 1739 | assert(!T.isNull() && "GetTypeForDeclarator() returned null type"); |
| 1740 | bool InvalidDecl = false; |
Steve Naroff | d7444aa | 2007-08-31 17:20:07 +0000 | [diff] [blame] | 1741 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1742 | // C99 6.7.2.1p8: A member of a structure or union may have any type other |
| 1743 | // than a variably modified type. |
Steve Naroff | d7444aa | 2007-08-31 17:20:07 +0000 | [diff] [blame] | 1744 | if (const VariableArrayType *VAT = T->getAsVariablyModifiedType()) { |
| 1745 | Diag(Loc, diag::err_typecheck_illegal_vla, |
| 1746 | VAT->getSizeExpr()->getSourceRange()); |
| 1747 | InvalidDecl = true; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1748 | } |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1749 | // FIXME: Chain fielddecls together. |
Steve Naroff | 4473921 | 2007-09-11 21:17:26 +0000 | [diff] [blame] | 1750 | FieldDecl *NewFD; |
| 1751 | |
| 1752 | if (isa<RecordDecl>(static_cast<Decl *>(TagDecl))) |
Devang Patel | 54e6235 | 2007-11-01 16:29:56 +0000 | [diff] [blame] | 1753 | NewFD = new FieldDecl(Loc, II, T, BitWidth); |
Steve Naroff | eaf5f41 | 2007-11-12 04:22:52 +0000 | [diff] [blame] | 1754 | else if (isa<ObjcInterfaceDecl>(static_cast<Decl *>(TagDecl)) || |
| 1755 | isa<ObjcImplementationDecl>(static_cast<Decl *>(TagDecl)) || |
Steve Naroff | ddd600f | 2007-11-14 14:15:31 +0000 | [diff] [blame] | 1756 | isa<ObjcCategoryDecl>(static_cast<Decl *>(TagDecl)) || |
| 1757 | // FIXME: ivars are currently used to model properties, and |
| 1758 | // properties can appear within a protocol. |
| 1759 | // See corresponding FIXME in DeclObjC.h:ObjcPropertyDecl. |
| 1760 | isa<ObjcProtocolDecl>(static_cast<Decl *>(TagDecl))) |
Steve Naroff | f38661e | 2007-09-14 02:20:46 +0000 | [diff] [blame] | 1761 | NewFD = new ObjcIvarDecl(Loc, II, T); |
Steve Naroff | 4473921 | 2007-09-11 21:17:26 +0000 | [diff] [blame] | 1762 | else |
Steve Naroff | 08d92e4 | 2007-09-15 18:49:24 +0000 | [diff] [blame] | 1763 | assert(0 && "Sema::ActOnField(): Unknown TagDecl"); |
Steve Naroff | 4473921 | 2007-09-11 21:17:26 +0000 | [diff] [blame] | 1764 | |
Steve Naroff | 5912a35 | 2007-08-28 20:14:24 +0000 | [diff] [blame] | 1765 | if (D.getInvalidType() || InvalidDecl) |
| 1766 | NewFD->setInvalidDecl(); |
| 1767 | return NewFD; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1768 | } |
| 1769 | |
Fariborz Jahanian | 89204a1 | 2007-10-01 16:53:59 +0000 | [diff] [blame] | 1770 | /// TranslateIvarVisibility - Translate visibility from a token ID to an |
| 1771 | /// AST enum value. |
| 1772 | static ObjcIvarDecl::AccessControl |
| 1773 | TranslateIvarVisibility(tok::ObjCKeywordKind ivarVisibility) { |
Steve Naroff | f13271f | 2007-09-14 23:09:53 +0000 | [diff] [blame] | 1774 | switch (ivarVisibility) { |
Fariborz Jahanian | 89204a1 | 2007-10-01 16:53:59 +0000 | [diff] [blame] | 1775 | case tok::objc_private: return ObjcIvarDecl::Private; |
| 1776 | case tok::objc_public: return ObjcIvarDecl::Public; |
| 1777 | case tok::objc_protected: return ObjcIvarDecl::Protected; |
| 1778 | case tok::objc_package: return ObjcIvarDecl::Package; |
| 1779 | default: assert(false && "Unknown visitibility kind"); |
Steve Naroff | f13271f | 2007-09-14 23:09:53 +0000 | [diff] [blame] | 1780 | } |
| 1781 | } |
| 1782 | |
Fariborz Jahanian | 9d048ff | 2007-09-29 00:54:24 +0000 | [diff] [blame] | 1783 | void Sema::ActOnFields(Scope* S, |
Fariborz Jahanian | 3f5faf7 | 2007-10-04 00:45:27 +0000 | [diff] [blame] | 1784 | SourceLocation RecLoc, DeclTy *RecDecl, |
Steve Naroff | 08d92e4 | 2007-09-15 18:49:24 +0000 | [diff] [blame] | 1785 | DeclTy **Fields, unsigned NumFields, |
Steve Naroff | 60fccee | 2007-10-29 21:38:07 +0000 | [diff] [blame] | 1786 | SourceLocation LBrac, SourceLocation RBrac, |
Steve Naroff | 08d92e4 | 2007-09-15 18:49:24 +0000 | [diff] [blame] | 1787 | tok::ObjCKeywordKind *visibility) { |
Steve Naroff | 7421664 | 2007-09-14 22:20:54 +0000 | [diff] [blame] | 1788 | Decl *EnclosingDecl = static_cast<Decl*>(RecDecl); |
| 1789 | assert(EnclosingDecl && "missing record or interface decl"); |
| 1790 | RecordDecl *Record = dyn_cast<RecordDecl>(EnclosingDecl); |
| 1791 | |
Fariborz Jahanian | e267ab6 | 2007-09-14 16:27:55 +0000 | [diff] [blame] | 1792 | if (Record && Record->isDefinition()) { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1793 | // Diagnose code like: |
| 1794 | // struct S { struct S {} X; }; |
| 1795 | // We discover this when we complete the outer S. Reject and ignore the |
| 1796 | // outer S. |
| 1797 | Diag(Record->getLocation(), diag::err_nested_redefinition, |
| 1798 | Record->getKindName()); |
| 1799 | Diag(RecLoc, diag::err_previous_definition); |
Steve Naroff | 7421664 | 2007-09-14 22:20:54 +0000 | [diff] [blame] | 1800 | Record->setInvalidDecl(); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1801 | return; |
| 1802 | } |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1803 | // Verify that all the fields are okay. |
| 1804 | unsigned NumNamedMembers = 0; |
| 1805 | llvm::SmallVector<FieldDecl*, 32> RecFields; |
| 1806 | llvm::SmallSet<const IdentifierInfo*, 32> FieldIDs; |
Steve Naroff | 7421664 | 2007-09-14 22:20:54 +0000 | [diff] [blame] | 1807 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1808 | for (unsigned i = 0; i != NumFields; ++i) { |
Fariborz Jahanian | e267ab6 | 2007-09-14 16:27:55 +0000 | [diff] [blame] | 1809 | |
Steve Naroff | 7421664 | 2007-09-14 22:20:54 +0000 | [diff] [blame] | 1810 | FieldDecl *FD = cast_or_null<FieldDecl>(static_cast<Decl*>(Fields[i])); |
| 1811 | assert(FD && "missing field decl"); |
| 1812 | |
| 1813 | // Remember all fields. |
| 1814 | RecFields.push_back(FD); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1815 | |
| 1816 | // Get the type for the field. |
Chris Lattner | 02c642e | 2007-07-31 21:33:24 +0000 | [diff] [blame] | 1817 | Type *FDTy = FD->getType().getTypePtr(); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1818 | |
Steve Naroff | f13271f | 2007-09-14 23:09:53 +0000 | [diff] [blame] | 1819 | // If we have visibility info, make sure the AST is set accordingly. |
| 1820 | if (visibility) |
Fariborz Jahanian | 89204a1 | 2007-10-01 16:53:59 +0000 | [diff] [blame] | 1821 | cast<ObjcIvarDecl>(FD)->setAccessControl( |
| 1822 | TranslateIvarVisibility(visibility[i])); |
Steve Naroff | f13271f | 2007-09-14 23:09:53 +0000 | [diff] [blame] | 1823 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1824 | // C99 6.7.2.1p2 - A field may not be a function type. |
Chris Lattner | 02c642e | 2007-07-31 21:33:24 +0000 | [diff] [blame] | 1825 | if (FDTy->isFunctionType()) { |
Steve Naroff | 7421664 | 2007-09-14 22:20:54 +0000 | [diff] [blame] | 1826 | Diag(FD->getLocation(), diag::err_field_declared_as_function, |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1827 | FD->getName()); |
Steve Naroff | 7421664 | 2007-09-14 22:20:54 +0000 | [diff] [blame] | 1828 | FD->setInvalidDecl(); |
| 1829 | EnclosingDecl->setInvalidDecl(); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1830 | continue; |
| 1831 | } |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1832 | // C99 6.7.2.1p2 - A field may not be an incomplete type except... |
| 1833 | if (FDTy->isIncompleteType()) { |
Fariborz Jahanian | e267ab6 | 2007-09-14 16:27:55 +0000 | [diff] [blame] | 1834 | if (!Record) { // Incomplete ivar type is always an error. |
Fariborz Jahanian | 3f5faf7 | 2007-10-04 00:45:27 +0000 | [diff] [blame] | 1835 | Diag(FD->getLocation(), diag::err_field_incomplete, FD->getName()); |
Steve Naroff | 7421664 | 2007-09-14 22:20:54 +0000 | [diff] [blame] | 1836 | FD->setInvalidDecl(); |
| 1837 | EnclosingDecl->setInvalidDecl(); |
Fariborz Jahanian | 3f5faf7 | 2007-10-04 00:45:27 +0000 | [diff] [blame] | 1838 | continue; |
Fariborz Jahanian | e267ab6 | 2007-09-14 16:27:55 +0000 | [diff] [blame] | 1839 | } |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1840 | if (i != NumFields-1 || // ... that the last member ... |
| 1841 | Record->getKind() != Decl::Struct || // ... of a structure ... |
Chris Lattner | 02c642e | 2007-07-31 21:33:24 +0000 | [diff] [blame] | 1842 | !FDTy->isArrayType()) { //... may have incomplete array type. |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1843 | Diag(FD->getLocation(), diag::err_field_incomplete, FD->getName()); |
Steve Naroff | 7421664 | 2007-09-14 22:20:54 +0000 | [diff] [blame] | 1844 | FD->setInvalidDecl(); |
| 1845 | EnclosingDecl->setInvalidDecl(); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1846 | continue; |
| 1847 | } |
Fariborz Jahanian | e267ab6 | 2007-09-14 16:27:55 +0000 | [diff] [blame] | 1848 | if (NumNamedMembers < 1) { //... must have more than named member ... |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1849 | Diag(FD->getLocation(), diag::err_flexible_array_empty_struct, |
| 1850 | FD->getName()); |
Steve Naroff | 7421664 | 2007-09-14 22:20:54 +0000 | [diff] [blame] | 1851 | FD->setInvalidDecl(); |
| 1852 | EnclosingDecl->setInvalidDecl(); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1853 | continue; |
| 1854 | } |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1855 | // Okay, we have a legal flexible array member at the end of the struct. |
Fariborz Jahanian | e267ab6 | 2007-09-14 16:27:55 +0000 | [diff] [blame] | 1856 | if (Record) |
| 1857 | Record->setHasFlexibleArrayMember(true); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1858 | } |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1859 | /// C99 6.7.2.1p2 - a struct ending in a flexible array member cannot be the |
| 1860 | /// field of another structure or the element of an array. |
Chris Lattner | 02c642e | 2007-07-31 21:33:24 +0000 | [diff] [blame] | 1861 | if (const RecordType *FDTTy = FDTy->getAsRecordType()) { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1862 | if (FDTTy->getDecl()->hasFlexibleArrayMember()) { |
| 1863 | // If this is a member of a union, then entire union becomes "flexible". |
Fariborz Jahanian | e267ab6 | 2007-09-14 16:27:55 +0000 | [diff] [blame] | 1864 | if (Record && Record->getKind() == Decl::Union) { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1865 | Record->setHasFlexibleArrayMember(true); |
| 1866 | } else { |
| 1867 | // If this is a struct/class and this is not the last element, reject |
| 1868 | // it. Note that GCC supports variable sized arrays in the middle of |
| 1869 | // structures. |
| 1870 | if (i != NumFields-1) { |
| 1871 | Diag(FD->getLocation(), diag::err_variable_sized_type_in_struct, |
| 1872 | FD->getName()); |
Steve Naroff | 7421664 | 2007-09-14 22:20:54 +0000 | [diff] [blame] | 1873 | FD->setInvalidDecl(); |
| 1874 | EnclosingDecl->setInvalidDecl(); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1875 | continue; |
| 1876 | } |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1877 | // We support flexible arrays at the end of structs in other structs |
| 1878 | // as an extension. |
| 1879 | Diag(FD->getLocation(), diag::ext_flexible_array_in_struct, |
| 1880 | FD->getName()); |
Fariborz Jahanian | 3f5faf7 | 2007-10-04 00:45:27 +0000 | [diff] [blame] | 1881 | if (Record) |
Fariborz Jahanian | e267ab6 | 2007-09-14 16:27:55 +0000 | [diff] [blame] | 1882 | Record->setHasFlexibleArrayMember(true); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1883 | } |
| 1884 | } |
| 1885 | } |
Fariborz Jahanian | e7f64cc | 2007-10-12 22:10:42 +0000 | [diff] [blame] | 1886 | /// A field cannot be an Objective-c object |
| 1887 | if (FDTy->isObjcInterfaceType()) { |
| 1888 | Diag(FD->getLocation(), diag::err_statically_allocated_object, |
| 1889 | FD->getName()); |
| 1890 | FD->setInvalidDecl(); |
| 1891 | EnclosingDecl->setInvalidDecl(); |
| 1892 | continue; |
| 1893 | } |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1894 | // Keep track of the number of named members. |
| 1895 | if (IdentifierInfo *II = FD->getIdentifier()) { |
| 1896 | // Detect duplicate member names. |
| 1897 | if (!FieldIDs.insert(II)) { |
| 1898 | Diag(FD->getLocation(), diag::err_duplicate_member, II->getName()); |
| 1899 | // Find the previous decl. |
| 1900 | SourceLocation PrevLoc; |
| 1901 | for (unsigned i = 0, e = RecFields.size(); ; ++i) { |
| 1902 | assert(i != e && "Didn't find previous def!"); |
| 1903 | if (RecFields[i]->getIdentifier() == II) { |
| 1904 | PrevLoc = RecFields[i]->getLocation(); |
| 1905 | break; |
| 1906 | } |
| 1907 | } |
| 1908 | Diag(PrevLoc, diag::err_previous_definition); |
Steve Naroff | 7421664 | 2007-09-14 22:20:54 +0000 | [diff] [blame] | 1909 | FD->setInvalidDecl(); |
| 1910 | EnclosingDecl->setInvalidDecl(); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1911 | continue; |
| 1912 | } |
| 1913 | ++NumNamedMembers; |
| 1914 | } |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1915 | } |
| 1916 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1917 | // Okay, we successfully defined 'Record'. |
Fariborz Jahanian | e267ab6 | 2007-09-14 16:27:55 +0000 | [diff] [blame] | 1918 | if (Record) |
| 1919 | Record->defineBody(&RecFields[0], RecFields.size()); |
Fariborz Jahanian | b04a021 | 2007-09-14 21:08:27 +0000 | [diff] [blame] | 1920 | else { |
| 1921 | ObjcIvarDecl **ClsFields = |
| 1922 | reinterpret_cast<ObjcIvarDecl**>(&RecFields[0]); |
Fariborz Jahanian | d0b90bf | 2007-09-26 18:27:25 +0000 | [diff] [blame] | 1923 | if (isa<ObjcInterfaceDecl>(static_cast<Decl*>(RecDecl))) |
| 1924 | cast<ObjcInterfaceDecl>(static_cast<Decl*>(RecDecl))-> |
Steve Naroff | 60fccee | 2007-10-29 21:38:07 +0000 | [diff] [blame] | 1925 | addInstanceVariablesToClass(ClsFields, RecFields.size(), RBrac); |
Fariborz Jahanian | d0b90bf | 2007-09-26 18:27:25 +0000 | [diff] [blame] | 1926 | else if (isa<ObjcImplementationDecl>(static_cast<Decl*>(RecDecl))) { |
| 1927 | ObjcImplementationDecl* IMPDecl = |
Fariborz Jahanian | 3f5faf7 | 2007-10-04 00:45:27 +0000 | [diff] [blame] | 1928 | cast<ObjcImplementationDecl>(static_cast<Decl*>(RecDecl)); |
Fariborz Jahanian | d0b90bf | 2007-09-26 18:27:25 +0000 | [diff] [blame] | 1929 | assert(IMPDecl && "ActOnFields - missing ObjcImplementationDecl"); |
| 1930 | IMPDecl->ObjcAddInstanceVariablesToClassImpl(ClsFields, RecFields.size()); |
Fariborz Jahanian | 3a3ca1b | 2007-10-31 18:48:14 +0000 | [diff] [blame] | 1931 | CheckImplementationIvars(IMPDecl, ClsFields, RecFields.size(), RBrac); |
Fariborz Jahanian | d0b90bf | 2007-09-26 18:27:25 +0000 | [diff] [blame] | 1932 | } |
Fariborz Jahanian | b04a021 | 2007-09-14 21:08:27 +0000 | [diff] [blame] | 1933 | } |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1934 | } |
| 1935 | |
Fariborz Jahanian | 85ff264 | 2007-10-05 18:00:57 +0000 | [diff] [blame] | 1936 | /// MatchTwoMethodDeclarations - Checks that two methods have matching type and |
| 1937 | /// returns true, or false, accordingly. |
| 1938 | /// TODO: Handle protocol list; such as id<p1,p2> in type comparisons |
| 1939 | bool Sema:: MatchTwoMethodDeclarations(const ObjcMethodDecl *Method, |
| 1940 | const ObjcMethodDecl *PrevMethod) { |
Steve Naroff | 3bea81b | 2007-10-16 21:36:54 +0000 | [diff] [blame] | 1941 | if (Method->getResultType().getCanonicalType() != |
| 1942 | PrevMethod->getResultType().getCanonicalType()) |
Fariborz Jahanian | 85ff264 | 2007-10-05 18:00:57 +0000 | [diff] [blame] | 1943 | return false; |
| 1944 | for (int i = 0; i < Method->getNumParams(); i++) { |
| 1945 | ParmVarDecl *ParamDecl = Method->getParamDecl(i); |
| 1946 | ParmVarDecl *PrevParamDecl = PrevMethod->getParamDecl(i); |
| 1947 | if (ParamDecl->getCanonicalType() != PrevParamDecl->getCanonicalType()) |
| 1948 | return false; |
| 1949 | } |
| 1950 | return true; |
| 1951 | } |
| 1952 | |
Steve Naroff | 58ff9e8 | 2007-10-14 00:58:41 +0000 | [diff] [blame] | 1953 | void Sema::AddInstanceMethodToGlobalPool(ObjcMethodDecl *Method) { |
| 1954 | ObjcMethodList &FirstMethod = InstanceMethodPool[Method->getSelector()]; |
| 1955 | if (!FirstMethod.Method) { |
| 1956 | // Haven't seen a method with this selector name yet - add it. |
| 1957 | FirstMethod.Method = Method; |
| 1958 | FirstMethod.Next = 0; |
| 1959 | } else { |
| 1960 | // We've seen a method with this name, now check the type signature(s). |
| 1961 | bool match = MatchTwoMethodDeclarations(Method, FirstMethod.Method); |
| 1962 | |
| 1963 | for (ObjcMethodList *Next = FirstMethod.Next; !match && Next; |
| 1964 | Next = Next->Next) |
| 1965 | match = MatchTwoMethodDeclarations(Method, Next->Method); |
| 1966 | |
| 1967 | if (!match) { |
| 1968 | // We have a new signature for an existing method - add it. |
| 1969 | // This is extremely rare. Only 1% of Cocoa selectors are "overloaded". |
| 1970 | struct ObjcMethodList *OMI = new ObjcMethodList(Method, FirstMethod.Next); |
| 1971 | FirstMethod.Next = OMI; |
| 1972 | } |
| 1973 | } |
| 1974 | } |
| 1975 | |
| 1976 | void Sema::AddFactoryMethodToGlobalPool(ObjcMethodDecl *Method) { |
| 1977 | ObjcMethodList &FirstMethod = FactoryMethodPool[Method->getSelector()]; |
| 1978 | if (!FirstMethod.Method) { |
| 1979 | // Haven't seen a method with this selector name yet - add it. |
| 1980 | FirstMethod.Method = Method; |
| 1981 | FirstMethod.Next = 0; |
| 1982 | } else { |
| 1983 | // We've seen a method with this name, now check the type signature(s). |
| 1984 | bool match = MatchTwoMethodDeclarations(Method, FirstMethod.Method); |
| 1985 | |
| 1986 | for (ObjcMethodList *Next = FirstMethod.Next; !match && Next; |
| 1987 | Next = Next->Next) |
| 1988 | match = MatchTwoMethodDeclarations(Method, Next->Method); |
| 1989 | |
| 1990 | if (!match) { |
| 1991 | // We have a new signature for an existing method - add it. |
| 1992 | // This is extremely rare. Only 1% of Cocoa selectors are "overloaded". |
| 1993 | struct ObjcMethodList *OMI = new ObjcMethodList(Method, FirstMethod.Next); |
| 1994 | FirstMethod.Next = OMI; |
| 1995 | } |
| 1996 | } |
| 1997 | } |
| 1998 | |
Steve Naroff | 0416fb9 | 2007-11-11 17:19:15 +0000 | [diff] [blame] | 1999 | void Sema::ActOnAtEnd(SourceLocation AtEndLoc, DeclTy *classDecl, |
| 2000 | DeclTy **allMethods, unsigned allNum, |
| 2001 | DeclTy **allProperties, unsigned pNum) { |
Chris Lattner | fd5de47 | 2007-10-06 22:53:46 +0000 | [diff] [blame] | 2002 | Decl *ClassDecl = static_cast<Decl *>(classDecl); |
Steve Naroff | 8f74476 | 2007-10-12 18:49:25 +0000 | [diff] [blame] | 2003 | |
| 2004 | // FIXME: If we don't have a ClassDecl, we have an error. I (snaroff) would |
| 2005 | // prefer we always pass in a decl. If the decl has an error, isInvalidDecl() |
| 2006 | // should be true. |
Fariborz Jahanian | e55cd00 | 2007-09-12 18:23:47 +0000 | [diff] [blame] | 2007 | if (!ClassDecl) |
| 2008 | return; |
Steve Naroff | 2feac5e | 2007-10-30 03:43:13 +0000 | [diff] [blame] | 2009 | |
Fariborz Jahanian | e3a2ca7 | 2007-09-10 20:33:04 +0000 | [diff] [blame] | 2010 | llvm::SmallVector<ObjcMethodDecl*, 32> insMethods; |
| 2011 | llvm::SmallVector<ObjcMethodDecl*, 16> clsMethods; |
Fariborz Jahanian | 85ff264 | 2007-10-05 18:00:57 +0000 | [diff] [blame] | 2012 | |
Steve Naroff | eefc418 | 2007-10-08 21:05:34 +0000 | [diff] [blame] | 2013 | llvm::DenseMap<Selector, const ObjcMethodDecl*> InsMap; |
| 2014 | llvm::DenseMap<Selector, const ObjcMethodDecl*> ClsMap; |
Fariborz Jahanian | 85ff264 | 2007-10-05 18:00:57 +0000 | [diff] [blame] | 2015 | |
Fariborz Jahanian | 82a5fe3 | 2007-11-06 22:01:00 +0000 | [diff] [blame] | 2016 | bool isInterfaceDeclKind = |
Fariborz Jahanian | 1109b42 | 2007-10-12 23:43:31 +0000 | [diff] [blame] | 2017 | (isa<ObjcInterfaceDecl>(ClassDecl) || isa<ObjcCategoryDecl>(ClassDecl) |
| 2018 | || isa<ObjcProtocolDecl>(ClassDecl)); |
Fariborz Jahanian | 3e7fd15 | 2007-10-16 21:52:23 +0000 | [diff] [blame] | 2019 | bool checkIdenticalMethods = isa<ObjcImplementationDecl>(ClassDecl); |
Fariborz Jahanian | 85ff264 | 2007-10-05 18:00:57 +0000 | [diff] [blame] | 2020 | |
Fariborz Jahanian | 82a5fe3 | 2007-11-06 22:01:00 +0000 | [diff] [blame] | 2021 | // TODO: property declaration in category and protocols. |
| 2022 | if (pNum != 0 && isa<ObjcInterfaceDecl>(ClassDecl)) { |
| 2023 | ObjcPropertyDecl **properties = new ObjcPropertyDecl*[pNum]; |
| 2024 | memcpy(properties, allProperties, pNum*sizeof(ObjcPropertyDecl*)); |
| 2025 | dyn_cast<ObjcInterfaceDecl>(ClassDecl)->setPropertyDecls(properties); |
| 2026 | dyn_cast<ObjcInterfaceDecl>(ClassDecl)->setNumPropertyDecl(pNum); |
| 2027 | } |
| 2028 | |
Fariborz Jahanian | e3a2ca7 | 2007-09-10 20:33:04 +0000 | [diff] [blame] | 2029 | for (unsigned i = 0; i < allNum; i++ ) { |
Fariborz Jahanian | 25e077d | 2007-09-17 21:07:36 +0000 | [diff] [blame] | 2030 | ObjcMethodDecl *Method = |
Fariborz Jahanian | e3a2ca7 | 2007-09-10 20:33:04 +0000 | [diff] [blame] | 2031 | cast_or_null<ObjcMethodDecl>(static_cast<Decl*>(allMethods[i])); |
Steve Naroff | 58ff9e8 | 2007-10-14 00:58:41 +0000 | [diff] [blame] | 2032 | |
Fariborz Jahanian | e3a2ca7 | 2007-09-10 20:33:04 +0000 | [diff] [blame] | 2033 | if (!Method) continue; // Already issued a diagnostic. |
Fariborz Jahanian | 85ff264 | 2007-10-05 18:00:57 +0000 | [diff] [blame] | 2034 | if (Method->isInstance()) { |
Fariborz Jahanian | 3e7fd15 | 2007-10-16 21:52:23 +0000 | [diff] [blame] | 2035 | /// Check for instance method of the same name with incompatible types |
| 2036 | const ObjcMethodDecl *&PrevMethod = InsMap[Method->getSelector()]; |
| 2037 | bool match = PrevMethod ? MatchTwoMethodDeclarations(Method, PrevMethod) |
| 2038 | : false; |
Fariborz Jahanian | 82a5fe3 | 2007-11-06 22:01:00 +0000 | [diff] [blame] | 2039 | if (isInterfaceDeclKind && PrevMethod && !match |
Fariborz Jahanian | 3e7fd15 | 2007-10-16 21:52:23 +0000 | [diff] [blame] | 2040 | || checkIdenticalMethods && match) { |
Fariborz Jahanian | 85ff264 | 2007-10-05 18:00:57 +0000 | [diff] [blame] | 2041 | Diag(Method->getLocation(), diag::error_duplicate_method_decl, |
Chris Lattner | f836e3f | 2007-10-07 01:33:16 +0000 | [diff] [blame] | 2042 | Method->getSelector().getName()); |
Fariborz Jahanian | 85ff264 | 2007-10-05 18:00:57 +0000 | [diff] [blame] | 2043 | Diag(PrevMethod->getLocation(), diag::err_previous_declaration); |
Fariborz Jahanian | 3e7fd15 | 2007-10-16 21:52:23 +0000 | [diff] [blame] | 2044 | } else { |
Fariborz Jahanian | 85ff264 | 2007-10-05 18:00:57 +0000 | [diff] [blame] | 2045 | insMethods.push_back(Method); |
Fariborz Jahanian | 3e7fd15 | 2007-10-16 21:52:23 +0000 | [diff] [blame] | 2046 | InsMap[Method->getSelector()] = Method; |
| 2047 | /// The following allows us to typecheck messages to "id". |
| 2048 | AddInstanceMethodToGlobalPool(Method); |
Fariborz Jahanian | 85ff264 | 2007-10-05 18:00:57 +0000 | [diff] [blame] | 2049 | } |
Fariborz Jahanian | 3e7fd15 | 2007-10-16 21:52:23 +0000 | [diff] [blame] | 2050 | } |
| 2051 | else { |
| 2052 | /// Check for class method of the same name with incompatible types |
| 2053 | const ObjcMethodDecl *&PrevMethod = ClsMap[Method->getSelector()]; |
| 2054 | bool match = PrevMethod ? MatchTwoMethodDeclarations(Method, PrevMethod) |
| 2055 | : false; |
Fariborz Jahanian | 82a5fe3 | 2007-11-06 22:01:00 +0000 | [diff] [blame] | 2056 | if (isInterfaceDeclKind && PrevMethod && !match |
Fariborz Jahanian | 3e7fd15 | 2007-10-16 21:52:23 +0000 | [diff] [blame] | 2057 | || checkIdenticalMethods && match) { |
| 2058 | Diag(Method->getLocation(), diag::error_duplicate_method_decl, |
| 2059 | Method->getSelector().getName()); |
| 2060 | Diag(PrevMethod->getLocation(), diag::err_previous_declaration); |
| 2061 | } else { |
Fariborz Jahanian | 85ff264 | 2007-10-05 18:00:57 +0000 | [diff] [blame] | 2062 | clsMethods.push_back(Method); |
Fariborz Jahanian | 3e7fd15 | 2007-10-16 21:52:23 +0000 | [diff] [blame] | 2063 | ClsMap[Method->getSelector()] = Method; |
| 2064 | /// The following allows us to typecheck messages to "id". |
| 2065 | AddInstanceMethodToGlobalPool(Method); |
| 2066 | } |
Fariborz Jahanian | 85ff264 | 2007-10-05 18:00:57 +0000 | [diff] [blame] | 2067 | } |
Fariborz Jahanian | e3a2ca7 | 2007-09-10 20:33:04 +0000 | [diff] [blame] | 2068 | } |
Chris Lattner | fd5de47 | 2007-10-06 22:53:46 +0000 | [diff] [blame] | 2069 | |
| 2070 | if (ObjcInterfaceDecl *I = dyn_cast<ObjcInterfaceDecl>(ClassDecl)) { |
Steve Naroff | 60fccee | 2007-10-29 21:38:07 +0000 | [diff] [blame] | 2071 | I->addMethods(&insMethods[0], insMethods.size(), |
| 2072 | &clsMethods[0], clsMethods.size(), AtEndLoc); |
Chris Lattner | fd5de47 | 2007-10-06 22:53:46 +0000 | [diff] [blame] | 2073 | } else if (ObjcProtocolDecl *P = dyn_cast<ObjcProtocolDecl>(ClassDecl)) { |
Steve Naroff | 60fccee | 2007-10-29 21:38:07 +0000 | [diff] [blame] | 2074 | P->addMethods(&insMethods[0], insMethods.size(), |
| 2075 | &clsMethods[0], clsMethods.size(), AtEndLoc); |
Fariborz Jahanian | 25e077d | 2007-09-17 21:07:36 +0000 | [diff] [blame] | 2076 | } |
Chris Lattner | fd5de47 | 2007-10-06 22:53:46 +0000 | [diff] [blame] | 2077 | else if (ObjcCategoryDecl *C = dyn_cast<ObjcCategoryDecl>(ClassDecl)) { |
Steve Naroff | 60fccee | 2007-10-29 21:38:07 +0000 | [diff] [blame] | 2078 | C->addMethods(&insMethods[0], insMethods.size(), |
| 2079 | &clsMethods[0], clsMethods.size(), AtEndLoc); |
Fariborz Jahanian | 25e077d | 2007-09-17 21:07:36 +0000 | [diff] [blame] | 2080 | } |
Chris Lattner | fd5de47 | 2007-10-06 22:53:46 +0000 | [diff] [blame] | 2081 | else if (ObjcImplementationDecl *IC = |
| 2082 | dyn_cast<ObjcImplementationDecl>(ClassDecl)) { |
Steve Naroff | 0416fb9 | 2007-11-11 17:19:15 +0000 | [diff] [blame] | 2083 | IC->setLocEnd(AtEndLoc); |
Chris Lattner | fd5de47 | 2007-10-06 22:53:46 +0000 | [diff] [blame] | 2084 | if (ObjcInterfaceDecl* IDecl = getObjCInterfaceDecl(IC->getIdentifier())) |
| 2085 | ImplMethodsVsClassMethods(IC, IDecl); |
| 2086 | } else { |
| 2087 | ObjcCategoryImplDecl* CatImplClass = cast<ObjcCategoryImplDecl>(ClassDecl); |
Steve Naroff | e1e6c0d | 2007-11-12 22:05:31 +0000 | [diff] [blame] | 2088 | CatImplClass->setLocEnd(AtEndLoc); |
Chris Lattner | fd5de47 | 2007-10-06 22:53:46 +0000 | [diff] [blame] | 2089 | ObjcInterfaceDecl* IDecl = CatImplClass->getClassInterface(); |
| 2090 | // Find category interface decl and then check that all methods declared |
| 2091 | // in this interface is implemented in the category @implementation. |
| 2092 | if (IDecl) { |
Steve Naroff | 3d58138 | 2007-10-14 18:27:41 +0000 | [diff] [blame] | 2093 | for (ObjcCategoryDecl *Categories = IDecl->getCategoryList(); |
Chris Lattner | fd5de47 | 2007-10-06 22:53:46 +0000 | [diff] [blame] | 2094 | Categories; Categories = Categories->getNextClassCategory()) { |
Chris Lattner | 6a0e89e | 2007-10-06 23:12:31 +0000 | [diff] [blame] | 2095 | if (Categories->getIdentifier() == CatImplClass->getIdentifier()) { |
Chris Lattner | fd5de47 | 2007-10-06 22:53:46 +0000 | [diff] [blame] | 2096 | ImplCategoryMethodsVsIntfMethods(CatImplClass, Categories); |
| 2097 | break; |
Fariborz Jahanian | 8f3fde0 | 2007-10-02 16:38:50 +0000 | [diff] [blame] | 2098 | } |
| 2099 | } |
| 2100 | } |
| 2101 | } |
Fariborz Jahanian | e3a2ca7 | 2007-09-10 20:33:04 +0000 | [diff] [blame] | 2102 | } |
| 2103 | |
Fariborz Jahanian | ecb01e6 | 2007-11-01 17:18:37 +0000 | [diff] [blame] | 2104 | /// CvtQTToAstBitMask - utility routine to produce an AST bitmask for |
| 2105 | /// objective-c's type qualifier from the parser version of the same info. |
| 2106 | static Decl::ObjcDeclQualifier |
| 2107 | CvtQTToAstBitMask(ObjcDeclSpec::ObjcDeclQualifier PQTVal) { |
| 2108 | Decl::ObjcDeclQualifier ret = Decl::OBJC_TQ_None; |
| 2109 | if (PQTVal & ObjcDeclSpec::DQ_In) |
| 2110 | ret = (Decl::ObjcDeclQualifier)(ret | Decl::OBJC_TQ_In); |
| 2111 | if (PQTVal & ObjcDeclSpec::DQ_Inout) |
| 2112 | ret = (Decl::ObjcDeclQualifier)(ret | Decl::OBJC_TQ_Inout); |
| 2113 | if (PQTVal & ObjcDeclSpec::DQ_Out) |
| 2114 | ret = (Decl::ObjcDeclQualifier)(ret | Decl::OBJC_TQ_Out); |
| 2115 | if (PQTVal & ObjcDeclSpec::DQ_Bycopy) |
| 2116 | ret = (Decl::ObjcDeclQualifier)(ret | Decl::OBJC_TQ_Bycopy); |
| 2117 | if (PQTVal & ObjcDeclSpec::DQ_Byref) |
| 2118 | ret = (Decl::ObjcDeclQualifier)(ret | Decl::OBJC_TQ_Byref); |
| 2119 | if (PQTVal & ObjcDeclSpec::DQ_Oneway) |
| 2120 | ret = (Decl::ObjcDeclQualifier)(ret | Decl::OBJC_TQ_Oneway); |
| 2121 | |
| 2122 | return ret; |
| 2123 | } |
| 2124 | |
Steve Naroff | bef1185 | 2007-10-26 20:53:56 +0000 | [diff] [blame] | 2125 | Sema::DeclTy *Sema::ActOnMethodDeclaration( |
| 2126 | SourceLocation MethodLoc, SourceLocation EndLoc, |
Fariborz Jahanian | 1f7b6f8 | 2007-11-09 19:52:12 +0000 | [diff] [blame] | 2127 | tok::TokenKind MethodType, DeclTy *ClassDecl, |
| 2128 | ObjcDeclSpec &ReturnQT, TypeTy *ReturnType, |
Fariborz Jahanian | f1de0ca | 2007-10-31 23:53:01 +0000 | [diff] [blame] | 2129 | Selector Sel, |
Steve Naroff | 68d331a | 2007-09-27 14:38:14 +0000 | [diff] [blame] | 2130 | // optional arguments. The number of types/arguments is obtained |
| 2131 | // from the Sel.getNumArgs(). |
Fariborz Jahanian | f1de0ca | 2007-10-31 23:53:01 +0000 | [diff] [blame] | 2132 | ObjcDeclSpec *ArgQT, TypeTy **ArgTypes, IdentifierInfo **ArgNames, |
Steve Naroff | 335eafa | 2007-11-15 12:35:21 +0000 | [diff] [blame] | 2133 | AttributeList *AttrList, tok::ObjCKeywordKind MethodDeclKind, |
| 2134 | bool isVariadic) { |
Fariborz Jahanian | e55cd00 | 2007-09-12 18:23:47 +0000 | [diff] [blame] | 2135 | llvm::SmallVector<ParmVarDecl*, 16> Params; |
Fariborz Jahanian | c2939bc | 2007-10-30 17:06:23 +0000 | [diff] [blame] | 2136 | |
Steve Naroff | bcfb06a | 2007-09-28 22:22:11 +0000 | [diff] [blame] | 2137 | for (unsigned i = 0; i < Sel.getNumArgs(); i++) { |
Fariborz Jahanian | e55cd00 | 2007-09-12 18:23:47 +0000 | [diff] [blame] | 2138 | // FIXME: arg->AttrList must be stored too! |
Steve Naroff | 3b95017 | 2007-10-10 21:53:07 +0000 | [diff] [blame] | 2139 | QualType argType; |
| 2140 | |
| 2141 | if (ArgTypes[i]) |
| 2142 | argType = QualType::getFromOpaquePtr(ArgTypes[i]); |
| 2143 | else |
Steve Naroff | 8ee529b | 2007-10-31 18:42:27 +0000 | [diff] [blame] | 2144 | argType = Context.getObjcIdType(); |
Steve Naroff | 68d331a | 2007-09-27 14:38:14 +0000 | [diff] [blame] | 2145 | ParmVarDecl* Param = new ParmVarDecl(SourceLocation(/*FIXME*/), ArgNames[i], |
Steve Naroff | 3b95017 | 2007-10-10 21:53:07 +0000 | [diff] [blame] | 2146 | argType, VarDecl::None, 0); |
Fariborz Jahanian | ecb01e6 | 2007-11-01 17:18:37 +0000 | [diff] [blame] | 2147 | Param->setObjcDeclQualifier( |
| 2148 | CvtQTToAstBitMask(ArgQT[i].getObjcDeclQualifier())); |
Fariborz Jahanian | e55cd00 | 2007-09-12 18:23:47 +0000 | [diff] [blame] | 2149 | Params.push_back(Param); |
| 2150 | } |
Steve Naroff | b216c88 | 2007-10-09 22:01:59 +0000 | [diff] [blame] | 2151 | QualType resultDeclType; |
| 2152 | |
| 2153 | if (ReturnType) |
| 2154 | resultDeclType = QualType::getFromOpaquePtr(ReturnType); |
Steve Naroff | 3b95017 | 2007-10-10 21:53:07 +0000 | [diff] [blame] | 2155 | else // get the type for "id". |
Steve Naroff | 8ee529b | 2007-10-31 18:42:27 +0000 | [diff] [blame] | 2156 | resultDeclType = Context.getObjcIdType(); |
Fariborz Jahanian | 1f7b6f8 | 2007-11-09 19:52:12 +0000 | [diff] [blame] | 2157 | |
| 2158 | Decl *CDecl = static_cast<Decl*>(ClassDecl); |
Steve Naroff | bef1185 | 2007-10-26 20:53:56 +0000 | [diff] [blame] | 2159 | ObjcMethodDecl* ObjcMethod = new ObjcMethodDecl(MethodLoc, EndLoc, Sel, |
Fariborz Jahanian | 1f7b6f8 | 2007-11-09 19:52:12 +0000 | [diff] [blame] | 2160 | resultDeclType, |
Fariborz Jahanian | b245a33 | 2007-11-13 01:10:08 +0000 | [diff] [blame] | 2161 | CDecl, |
Fariborz Jahanian | 1f7b6f8 | 2007-11-09 19:52:12 +0000 | [diff] [blame] | 2162 | 0, -1, AttrList, |
Steve Naroff | 335eafa | 2007-11-15 12:35:21 +0000 | [diff] [blame] | 2163 | MethodType == tok::minus, isVariadic, |
Fariborz Jahanian | 3f5faf7 | 2007-10-04 00:45:27 +0000 | [diff] [blame] | 2164 | MethodDeclKind == tok::objc_optional ? |
| 2165 | ObjcMethodDecl::Optional : |
| 2166 | ObjcMethodDecl::Required); |
Steve Naroff | bcfb06a | 2007-09-28 22:22:11 +0000 | [diff] [blame] | 2167 | ObjcMethod->setMethodParams(&Params[0], Sel.getNumArgs()); |
Fariborz Jahanian | ecb01e6 | 2007-11-01 17:18:37 +0000 | [diff] [blame] | 2168 | ObjcMethod->setObjcDeclQualifier( |
| 2169 | CvtQTToAstBitMask(ReturnQT.getObjcDeclQualifier())); |
Steve Naroff | e1e6c0d | 2007-11-12 22:05:31 +0000 | [diff] [blame] | 2170 | const ObjcMethodDecl *PrevMethod = 0; |
Fariborz Jahanian | b245a33 | 2007-11-13 01:10:08 +0000 | [diff] [blame] | 2171 | |
Steve Naroff | e1e6c0d | 2007-11-12 22:05:31 +0000 | [diff] [blame] | 2172 | // For implementations (which can be very "coarse grain"), we add the |
| 2173 | // method now. This allows the AST to implement lookup methods that work |
| 2174 | // incrementally (without waiting until we parse the @end). It also allows |
| 2175 | // us to flag multiple declaration errors as they occur. |
Fariborz Jahanian | b245a33 | 2007-11-13 01:10:08 +0000 | [diff] [blame] | 2176 | if (ObjcImplementationDecl *ImpDecl = |
| 2177 | dyn_cast<ObjcImplementationDecl>(CDecl)) { |
Steve Naroff | 0416fb9 | 2007-11-11 17:19:15 +0000 | [diff] [blame] | 2178 | if (MethodType == tok::minus) { |
| 2179 | PrevMethod = ImpDecl->lookupInstanceMethod(Sel); |
| 2180 | ImpDecl->addInstanceMethod(ObjcMethod); |
| 2181 | } else { |
| 2182 | PrevMethod = ImpDecl->lookupClassMethod(Sel); |
| 2183 | ImpDecl->addClassMethod(ObjcMethod); |
| 2184 | } |
Fariborz Jahanian | b245a33 | 2007-11-13 01:10:08 +0000 | [diff] [blame] | 2185 | } |
| 2186 | else if (ObjcCategoryImplDecl *CatImpDecl = |
| 2187 | dyn_cast<ObjcCategoryImplDecl>(CDecl)) { |
Steve Naroff | e1e6c0d | 2007-11-12 22:05:31 +0000 | [diff] [blame] | 2188 | if (MethodType == tok::minus) { |
| 2189 | PrevMethod = CatImpDecl->lookupInstanceMethod(Sel); |
| 2190 | CatImpDecl->addInstanceMethod(ObjcMethod); |
| 2191 | } else { |
| 2192 | PrevMethod = CatImpDecl->lookupClassMethod(Sel); |
| 2193 | CatImpDecl->addClassMethod(ObjcMethod); |
| 2194 | } |
Steve Naroff | 0416fb9 | 2007-11-11 17:19:15 +0000 | [diff] [blame] | 2195 | } |
Steve Naroff | e1e6c0d | 2007-11-12 22:05:31 +0000 | [diff] [blame] | 2196 | if (PrevMethod) { |
| 2197 | // You can never have two method definitions with the same name. |
| 2198 | Diag(ObjcMethod->getLocation(), diag::error_duplicate_method_decl, |
| 2199 | ObjcMethod->getSelector().getName()); |
| 2200 | Diag(PrevMethod->getLocation(), diag::err_previous_declaration); |
| 2201 | } |
Fariborz Jahanian | 25e077d | 2007-09-17 21:07:36 +0000 | [diff] [blame] | 2202 | return ObjcMethod; |
Fariborz Jahanian | e55cd00 | 2007-09-12 18:23:47 +0000 | [diff] [blame] | 2203 | } |
| 2204 | |
Fariborz Jahanian | 82a5fe3 | 2007-11-06 22:01:00 +0000 | [diff] [blame] | 2205 | Sema::DeclTy *Sema::ActOnAddObjcProperties(SourceLocation AtLoc, |
| 2206 | DeclTy **allProperties, unsigned NumProperties, ObjcDeclSpec &DS) { |
| 2207 | ObjcPropertyDecl *PDecl = new ObjcPropertyDecl(AtLoc); |
| 2208 | |
| 2209 | if(DS.getPropertyAttributes() & ObjcDeclSpec::DQ_PR_readonly) |
| 2210 | PDecl->setPropertyAttributes(ObjcPropertyDecl::OBJC_PR_readonly); |
| 2211 | |
| 2212 | if(DS.getPropertyAttributes() & ObjcDeclSpec::DQ_PR_getter) { |
| 2213 | PDecl->setPropertyAttributes(ObjcPropertyDecl::OBJC_PR_getter); |
| 2214 | PDecl->setGetterName(DS.getGetterName()); |
| 2215 | } |
| 2216 | |
| 2217 | if(DS.getPropertyAttributes() & ObjcDeclSpec::DQ_PR_setter) { |
| 2218 | PDecl->setPropertyAttributes(ObjcPropertyDecl::OBJC_PR_setter); |
| 2219 | PDecl->setSetterName(DS.getSetterName()); |
| 2220 | } |
| 2221 | |
| 2222 | if(DS.getPropertyAttributes() & ObjcDeclSpec::DQ_PR_assign) |
| 2223 | PDecl->setPropertyAttributes(ObjcPropertyDecl::OBJC_PR_assign); |
| 2224 | |
| 2225 | if(DS.getPropertyAttributes() & ObjcDeclSpec::DQ_PR_readwrite) |
| 2226 | PDecl->setPropertyAttributes(ObjcPropertyDecl::OBJC_PR_readwrite); |
| 2227 | |
| 2228 | if(DS.getPropertyAttributes() & ObjcDeclSpec::DQ_PR_retain) |
| 2229 | PDecl->setPropertyAttributes(ObjcPropertyDecl::OBJC_PR_retain); |
| 2230 | |
| 2231 | if(DS.getPropertyAttributes() & ObjcDeclSpec::DQ_PR_copy) |
| 2232 | PDecl->setPropertyAttributes(ObjcPropertyDecl::OBJC_PR_copy); |
| 2233 | |
| 2234 | if(DS.getPropertyAttributes() & ObjcDeclSpec::DQ_PR_nonatomic) |
| 2235 | PDecl->setPropertyAttributes(ObjcPropertyDecl::OBJC_PR_nonatomic); |
| 2236 | |
| 2237 | PDecl->setNumPropertyDecls(NumProperties); |
| 2238 | if (NumProperties != 0) { |
| 2239 | ObjcIvarDecl **properties = new ObjcIvarDecl*[NumProperties]; |
| 2240 | memcpy(properties, allProperties, NumProperties*sizeof(ObjcIvarDecl*)); |
| 2241 | PDecl->setPropertyDecls(properties); |
| 2242 | } |
| 2243 | return PDecl; |
| 2244 | } |
| 2245 | |
Steve Naroff | 08d92e4 | 2007-09-15 18:49:24 +0000 | [diff] [blame] | 2246 | Sema::DeclTy *Sema::ActOnEnumConstant(Scope *S, DeclTy *theEnumDecl, |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2247 | DeclTy *lastEnumConst, |
| 2248 | SourceLocation IdLoc, IdentifierInfo *Id, |
| 2249 | SourceLocation EqualLoc, ExprTy *val) { |
| 2250 | theEnumDecl = theEnumDecl; // silence unused warning. |
| 2251 | EnumConstantDecl *LastEnumConst = |
| 2252 | cast_or_null<EnumConstantDecl>(static_cast<Decl*>(lastEnumConst)); |
| 2253 | Expr *Val = static_cast<Expr*>(val); |
| 2254 | |
Chris Lattner | 31e0572 | 2007-08-26 06:24:45 +0000 | [diff] [blame] | 2255 | // The scope passed in may not be a decl scope. Zip up the scope tree until |
| 2256 | // we find one that is. |
| 2257 | while ((S->getFlags() & Scope::DeclScope) == 0) |
| 2258 | S = S->getParent(); |
| 2259 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2260 | // Verify that there isn't already something declared with this name in this |
| 2261 | // scope. |
Steve Naroff | 8e74c93 | 2007-09-13 21:41:19 +0000 | [diff] [blame] | 2262 | if (ScopedDecl *PrevDecl = LookupScopedDecl(Id, Decl::IDNS_Ordinary, |
| 2263 | IdLoc, S)) { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2264 | if (S->isDeclScope(PrevDecl)) { |
| 2265 | if (isa<EnumConstantDecl>(PrevDecl)) |
| 2266 | Diag(IdLoc, diag::err_redefinition_of_enumerator, Id->getName()); |
| 2267 | else |
| 2268 | Diag(IdLoc, diag::err_redefinition, Id->getName()); |
| 2269 | Diag(PrevDecl->getLocation(), diag::err_previous_definition); |
| 2270 | // FIXME: Don't leak memory: delete Val; |
| 2271 | return 0; |
| 2272 | } |
| 2273 | } |
| 2274 | |
| 2275 | llvm::APSInt EnumVal(32); |
| 2276 | QualType EltTy; |
| 2277 | if (Val) { |
Chris Lattner | 421a23d | 2007-08-27 21:16:18 +0000 | [diff] [blame] | 2278 | // Make sure to promote the operand type to int. |
| 2279 | UsualUnaryConversions(Val); |
| 2280 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2281 | // C99 6.7.2.2p2: Make sure we have an integer constant expression. |
| 2282 | SourceLocation ExpLoc; |
Chris Lattner | 590b664 | 2007-07-15 23:26:56 +0000 | [diff] [blame] | 2283 | if (!Val->isIntegerConstantExpr(EnumVal, Context, &ExpLoc)) { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2284 | Diag(ExpLoc, diag::err_enum_value_not_integer_constant_expr, |
| 2285 | Id->getName()); |
| 2286 | // FIXME: Don't leak memory: delete Val; |
Chris Lattner | b7416f9 | 2007-08-27 17:37:24 +0000 | [diff] [blame] | 2287 | Val = 0; // Just forget about it. |
Chris Lattner | e9ca851 | 2007-08-29 16:03:41 +0000 | [diff] [blame] | 2288 | } else { |
| 2289 | EltTy = Val->getType(); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2290 | } |
Chris Lattner | b7416f9 | 2007-08-27 17:37:24 +0000 | [diff] [blame] | 2291 | } |
| 2292 | |
| 2293 | if (!Val) { |
| 2294 | if (LastEnumConst) { |
| 2295 | // Assign the last value + 1. |
| 2296 | EnumVal = LastEnumConst->getInitVal(); |
| 2297 | ++EnumVal; |
Chris Lattner | 421a23d | 2007-08-27 21:16:18 +0000 | [diff] [blame] | 2298 | |
| 2299 | // Check for overflow on increment. |
| 2300 | if (EnumVal < LastEnumConst->getInitVal()) |
| 2301 | Diag(IdLoc, diag::warn_enum_value_overflow); |
| 2302 | |
Chris Lattner | b7416f9 | 2007-08-27 17:37:24 +0000 | [diff] [blame] | 2303 | EltTy = LastEnumConst->getType(); |
| 2304 | } else { |
| 2305 | // First value, set to zero. |
| 2306 | EltTy = Context.IntTy; |
Chris Lattner | 701e5eb | 2007-09-04 02:45:27 +0000 | [diff] [blame] | 2307 | EnumVal.zextOrTrunc( |
| 2308 | static_cast<uint32_t>(Context.getTypeSize(EltTy, IdLoc))); |
Chris Lattner | b7416f9 | 2007-08-27 17:37:24 +0000 | [diff] [blame] | 2309 | } |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2310 | } |
| 2311 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2312 | EnumConstantDecl *New = new EnumConstantDecl(IdLoc, Id, EltTy, Val, EnumVal, |
| 2313 | LastEnumConst); |
| 2314 | |
| 2315 | // Register this decl in the current scope stack. |
Steve Naroff | c752d04 | 2007-09-13 18:10:37 +0000 | [diff] [blame] | 2316 | New->setNext(Id->getFETokenInfo<ScopedDecl>()); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2317 | Id->setFETokenInfo(New); |
| 2318 | S->AddDecl(New); |
| 2319 | return New; |
| 2320 | } |
| 2321 | |
Steve Naroff | 08d92e4 | 2007-09-15 18:49:24 +0000 | [diff] [blame] | 2322 | void Sema::ActOnEnumBody(SourceLocation EnumLoc, DeclTy *EnumDeclX, |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2323 | DeclTy **Elements, unsigned NumElements) { |
| 2324 | EnumDecl *Enum = cast<EnumDecl>(static_cast<Decl*>(EnumDeclX)); |
| 2325 | assert(!Enum->isDefinition() && "Enum redefinitions can't reach here"); |
| 2326 | |
Chris Lattner | e37f0be | 2007-08-28 05:10:31 +0000 | [diff] [blame] | 2327 | // TODO: If the result value doesn't fit in an int, it must be a long or long |
| 2328 | // long value. ISO C does not support this, but GCC does as an extension, |
| 2329 | // emit a warning. |
Chris Lattner | ac60968 | 2007-08-28 06:15:15 +0000 | [diff] [blame] | 2330 | unsigned IntWidth = Context.Target.getIntWidth(Enum->getLocation()); |
Chris Lattner | e37f0be | 2007-08-28 05:10:31 +0000 | [diff] [blame] | 2331 | |
| 2332 | |
Chris Lattner | ac60968 | 2007-08-28 06:15:15 +0000 | [diff] [blame] | 2333 | // Verify that all the values are okay, compute the size of the values, and |
| 2334 | // reverse the list. |
| 2335 | unsigned NumNegativeBits = 0; |
| 2336 | unsigned NumPositiveBits = 0; |
| 2337 | |
| 2338 | // Keep track of whether all elements have type int. |
| 2339 | bool AllElementsInt = true; |
| 2340 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2341 | EnumConstantDecl *EltList = 0; |
| 2342 | for (unsigned i = 0; i != NumElements; ++i) { |
| 2343 | EnumConstantDecl *ECD = |
| 2344 | cast_or_null<EnumConstantDecl>(static_cast<Decl*>(Elements[i])); |
| 2345 | if (!ECD) continue; // Already issued a diagnostic. |
Chris Lattner | 211a30e | 2007-08-28 05:27:00 +0000 | [diff] [blame] | 2346 | |
| 2347 | // If the enum value doesn't fit in an int, emit an extension warning. |
| 2348 | assert(ECD->getInitVal().getBitWidth() >= IntWidth && |
| 2349 | "Should have promoted value to int"); |
| 2350 | const llvm::APSInt &InitVal = ECD->getInitVal(); |
| 2351 | if (InitVal.getBitWidth() > IntWidth) { |
| 2352 | llvm::APSInt V(InitVal); |
| 2353 | V.trunc(IntWidth); |
| 2354 | V.extend(InitVal.getBitWidth()); |
| 2355 | if (V != InitVal) |
| 2356 | Diag(ECD->getLocation(), diag::ext_enum_value_not_int, |
| 2357 | InitVal.toString()); |
| 2358 | } |
Chris Lattner | ac60968 | 2007-08-28 06:15:15 +0000 | [diff] [blame] | 2359 | |
| 2360 | // Keep track of the size of positive and negative values. |
| 2361 | if (InitVal.isUnsigned() || !InitVal.isNegative()) |
| 2362 | NumPositiveBits = std::max(NumPositiveBits, InitVal.getActiveBits()); |
| 2363 | else |
| 2364 | NumNegativeBits = std::max(NumNegativeBits, InitVal.getMinSignedBits()); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2365 | |
Chris Lattner | ac60968 | 2007-08-28 06:15:15 +0000 | [diff] [blame] | 2366 | // Keep track of whether every enum element has type int (very commmon). |
| 2367 | if (AllElementsInt) |
| 2368 | AllElementsInt = ECD->getType() == Context.IntTy; |
| 2369 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2370 | ECD->setNextDeclarator(EltList); |
| 2371 | EltList = ECD; |
| 2372 | } |
| 2373 | |
Chris Lattner | ac60968 | 2007-08-28 06:15:15 +0000 | [diff] [blame] | 2374 | // Figure out the type that should be used for this enum. |
| 2375 | // FIXME: Support attribute(packed) on enums and -fshort-enums. |
| 2376 | QualType BestType; |
Chris Lattner | b7f6e08 | 2007-08-29 17:31:48 +0000 | [diff] [blame] | 2377 | unsigned BestWidth; |
Chris Lattner | ac60968 | 2007-08-28 06:15:15 +0000 | [diff] [blame] | 2378 | |
| 2379 | if (NumNegativeBits) { |
| 2380 | // If there is a negative value, figure out the smallest integer type (of |
| 2381 | // int/long/longlong) that fits. |
Chris Lattner | b7f6e08 | 2007-08-29 17:31:48 +0000 | [diff] [blame] | 2382 | if (NumNegativeBits <= IntWidth && NumPositiveBits < IntWidth) { |
Chris Lattner | ac60968 | 2007-08-28 06:15:15 +0000 | [diff] [blame] | 2383 | BestType = Context.IntTy; |
Chris Lattner | b7f6e08 | 2007-08-29 17:31:48 +0000 | [diff] [blame] | 2384 | BestWidth = IntWidth; |
| 2385 | } else { |
| 2386 | BestWidth = Context.Target.getLongWidth(Enum->getLocation()); |
| 2387 | if (NumNegativeBits <= BestWidth && NumPositiveBits < BestWidth) |
Chris Lattner | ac60968 | 2007-08-28 06:15:15 +0000 | [diff] [blame] | 2388 | BestType = Context.LongTy; |
| 2389 | else { |
Chris Lattner | b7f6e08 | 2007-08-29 17:31:48 +0000 | [diff] [blame] | 2390 | BestWidth = Context.Target.getLongLongWidth(Enum->getLocation()); |
| 2391 | if (NumNegativeBits > BestWidth || NumPositiveBits >= BestWidth) |
Chris Lattner | ac60968 | 2007-08-28 06:15:15 +0000 | [diff] [blame] | 2392 | Diag(Enum->getLocation(), diag::warn_enum_too_large); |
| 2393 | BestType = Context.LongLongTy; |
| 2394 | } |
| 2395 | } |
| 2396 | } else { |
| 2397 | // If there is no negative value, figure out which of uint, ulong, ulonglong |
| 2398 | // fits. |
Chris Lattner | b7f6e08 | 2007-08-29 17:31:48 +0000 | [diff] [blame] | 2399 | if (NumPositiveBits <= IntWidth) { |
Chris Lattner | ac60968 | 2007-08-28 06:15:15 +0000 | [diff] [blame] | 2400 | BestType = Context.UnsignedIntTy; |
Chris Lattner | b7f6e08 | 2007-08-29 17:31:48 +0000 | [diff] [blame] | 2401 | BestWidth = IntWidth; |
| 2402 | } else if (NumPositiveBits <= |
| 2403 | (BestWidth = Context.Target.getLongWidth(Enum->getLocation()))) |
Chris Lattner | ac60968 | 2007-08-28 06:15:15 +0000 | [diff] [blame] | 2404 | BestType = Context.UnsignedLongTy; |
| 2405 | else { |
Chris Lattner | b7f6e08 | 2007-08-29 17:31:48 +0000 | [diff] [blame] | 2406 | BestWidth = Context.Target.getLongLongWidth(Enum->getLocation()); |
| 2407 | assert(NumPositiveBits <= BestWidth && |
Chris Lattner | ac60968 | 2007-08-28 06:15:15 +0000 | [diff] [blame] | 2408 | "How could an initializer get larger than ULL?"); |
| 2409 | BestType = Context.UnsignedLongLongTy; |
| 2410 | } |
| 2411 | } |
| 2412 | |
Chris Lattner | b7f6e08 | 2007-08-29 17:31:48 +0000 | [diff] [blame] | 2413 | // Loop over all of the enumerator constants, changing their types to match |
| 2414 | // the type of the enum if needed. |
| 2415 | for (unsigned i = 0; i != NumElements; ++i) { |
| 2416 | EnumConstantDecl *ECD = |
| 2417 | cast_or_null<EnumConstantDecl>(static_cast<Decl*>(Elements[i])); |
| 2418 | if (!ECD) continue; // Already issued a diagnostic. |
| 2419 | |
| 2420 | // Standard C says the enumerators have int type, but we allow, as an |
| 2421 | // extension, the enumerators to be larger than int size. If each |
| 2422 | // enumerator value fits in an int, type it as an int, otherwise type it the |
| 2423 | // same as the enumerator decl itself. This means that in "enum { X = 1U }" |
| 2424 | // that X has type 'int', not 'unsigned'. |
| 2425 | if (ECD->getType() == Context.IntTy) |
| 2426 | continue; // Already int type. |
| 2427 | |
| 2428 | // Determine whether the value fits into an int. |
| 2429 | llvm::APSInt InitVal = ECD->getInitVal(); |
| 2430 | bool FitsInInt; |
| 2431 | if (InitVal.isUnsigned() || !InitVal.isNegative()) |
| 2432 | FitsInInt = InitVal.getActiveBits() < IntWidth; |
| 2433 | else |
| 2434 | FitsInInt = InitVal.getMinSignedBits() <= IntWidth; |
| 2435 | |
| 2436 | // If it fits into an integer type, force it. Otherwise force it to match |
| 2437 | // the enum decl type. |
| 2438 | QualType NewTy; |
| 2439 | unsigned NewWidth; |
| 2440 | bool NewSign; |
| 2441 | if (FitsInInt) { |
| 2442 | NewTy = Context.IntTy; |
| 2443 | NewWidth = IntWidth; |
| 2444 | NewSign = true; |
| 2445 | } else if (ECD->getType() == BestType) { |
| 2446 | // Already the right type! |
| 2447 | continue; |
| 2448 | } else { |
| 2449 | NewTy = BestType; |
| 2450 | NewWidth = BestWidth; |
| 2451 | NewSign = BestType->isSignedIntegerType(); |
| 2452 | } |
| 2453 | |
| 2454 | // Adjust the APSInt value. |
| 2455 | InitVal.extOrTrunc(NewWidth); |
| 2456 | InitVal.setIsSigned(NewSign); |
| 2457 | ECD->setInitVal(InitVal); |
| 2458 | |
| 2459 | // Adjust the Expr initializer and type. |
| 2460 | ECD->setInitExpr(new ImplicitCastExpr(NewTy, ECD->getInitExpr())); |
| 2461 | ECD->setType(NewTy); |
| 2462 | } |
Chris Lattner | ac60968 | 2007-08-28 06:15:15 +0000 | [diff] [blame] | 2463 | |
Chris Lattner | e00b18c | 2007-08-28 18:24:31 +0000 | [diff] [blame] | 2464 | Enum->defineElements(EltList, BestType); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2465 | } |
| 2466 | |
Steve Naroff | 1f64432 | 2007-11-28 22:54:11 +0000 | [diff] [blame] | 2467 | void Sema::AddTopLevelDecl(Decl *current) { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2468 | if (!current) return; |
| 2469 | |
| 2470 | // If this is a top-level decl that is chained to some other (e.g. int A,B,C;) |
Steve Naroff | 1f64432 | 2007-11-28 22:54:11 +0000 | [diff] [blame] | 2471 | // remember this in the TopLevelDeclList list. |
| 2472 | TopLevelDeclList.push_back((Decl*)current); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2473 | } |
| 2474 | |
| 2475 | void Sema::HandleDeclAttribute(Decl *New, AttributeList *rawAttr) { |
Chris Lattner | 7ee261c | 2007-11-27 07:28:18 +0000 | [diff] [blame] | 2476 | if (!strcmp(rawAttr->getAttributeName()->getName(), "vector_size") || |
| 2477 | !strcmp(rawAttr->getAttributeName()->getName(), "__vector_size__")) { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2478 | if (ValueDecl *vDecl = dyn_cast<ValueDecl>(New)) { |
| 2479 | QualType newType = HandleVectorTypeAttribute(vDecl->getType(), rawAttr); |
| 2480 | if (!newType.isNull()) // install the new vector type into the decl |
| 2481 | vDecl->setType(newType); |
| 2482 | } |
| 2483 | if (TypedefDecl *tDecl = dyn_cast<TypedefDecl>(New)) { |
| 2484 | QualType newType = HandleVectorTypeAttribute(tDecl->getUnderlyingType(), |
| 2485 | rawAttr); |
| 2486 | if (!newType.isNull()) // install the new vector type into the decl |
| 2487 | tDecl->setUnderlyingType(newType); |
| 2488 | } |
| 2489 | } |
Chris Lattner | 7ee261c | 2007-11-27 07:28:18 +0000 | [diff] [blame] | 2490 | if (!strcmp(rawAttr->getAttributeName()->getName(), "ocu_vector_type") || |
| 2491 | !strcmp(rawAttr->getAttributeName()->getName(), "__ocu_vector_type__")) { |
Steve Naroff | bea0b34 | 2007-07-29 16:33:31 +0000 | [diff] [blame] | 2492 | if (TypedefDecl *tDecl = dyn_cast<TypedefDecl>(New)) |
| 2493 | HandleOCUVectorTypeAttribute(tDecl, rawAttr); |
| 2494 | else |
Steve Naroff | 7332292 | 2007-07-18 18:00:27 +0000 | [diff] [blame] | 2495 | Diag(rawAttr->getAttributeLoc(), |
| 2496 | diag::err_typecheck_ocu_vector_not_typedef); |
Steve Naroff | 7332292 | 2007-07-18 18:00:27 +0000 | [diff] [blame] | 2497 | } |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2498 | // FIXME: add other attributes... |
| 2499 | } |
| 2500 | |
| 2501 | void Sema::HandleDeclAttributes(Decl *New, AttributeList *declspec_prefix, |
| 2502 | AttributeList *declarator_postfix) { |
| 2503 | while (declspec_prefix) { |
| 2504 | HandleDeclAttribute(New, declspec_prefix); |
| 2505 | declspec_prefix = declspec_prefix->getNext(); |
| 2506 | } |
| 2507 | while (declarator_postfix) { |
| 2508 | HandleDeclAttribute(New, declarator_postfix); |
| 2509 | declarator_postfix = declarator_postfix->getNext(); |
| 2510 | } |
| 2511 | } |
| 2512 | |
Steve Naroff | bea0b34 | 2007-07-29 16:33:31 +0000 | [diff] [blame] | 2513 | void Sema::HandleOCUVectorTypeAttribute(TypedefDecl *tDecl, |
| 2514 | AttributeList *rawAttr) { |
| 2515 | QualType curType = tDecl->getUnderlyingType(); |
Steve Naroff | 7332292 | 2007-07-18 18:00:27 +0000 | [diff] [blame] | 2516 | // check the attribute arugments. |
| 2517 | if (rawAttr->getNumArgs() != 1) { |
| 2518 | Diag(rawAttr->getAttributeLoc(), diag::err_attribute_wrong_number_arguments, |
| 2519 | std::string("1")); |
Steve Naroff | bea0b34 | 2007-07-29 16:33:31 +0000 | [diff] [blame] | 2520 | return; |
Steve Naroff | 7332292 | 2007-07-18 18:00:27 +0000 | [diff] [blame] | 2521 | } |
| 2522 | Expr *sizeExpr = static_cast<Expr *>(rawAttr->getArg(0)); |
| 2523 | llvm::APSInt vecSize(32); |
| 2524 | if (!sizeExpr->isIntegerConstantExpr(vecSize, Context)) { |
| 2525 | Diag(rawAttr->getAttributeLoc(), diag::err_attribute_vector_size_not_int, |
| 2526 | sizeExpr->getSourceRange()); |
Steve Naroff | bea0b34 | 2007-07-29 16:33:31 +0000 | [diff] [blame] | 2527 | return; |
Steve Naroff | 7332292 | 2007-07-18 18:00:27 +0000 | [diff] [blame] | 2528 | } |
| 2529 | // unlike gcc's vector_size attribute, we do not allow vectors to be defined |
| 2530 | // in conjunction with complex types (pointers, arrays, functions, etc.). |
| 2531 | Type *canonType = curType.getCanonicalType().getTypePtr(); |
| 2532 | if (!(canonType->isIntegerType() || canonType->isRealFloatingType())) { |
| 2533 | Diag(rawAttr->getAttributeLoc(), diag::err_attribute_invalid_vector_type, |
| 2534 | curType.getCanonicalType().getAsString()); |
Steve Naroff | bea0b34 | 2007-07-29 16:33:31 +0000 | [diff] [blame] | 2535 | return; |
Steve Naroff | 7332292 | 2007-07-18 18:00:27 +0000 | [diff] [blame] | 2536 | } |
| 2537 | // unlike gcc's vector_size attribute, the size is specified as the |
| 2538 | // number of elements, not the number of bytes. |
Chris Lattner | 701e5eb | 2007-09-04 02:45:27 +0000 | [diff] [blame] | 2539 | unsigned vectorSize = static_cast<unsigned>(vecSize.getZExtValue()); |
Steve Naroff | 7332292 | 2007-07-18 18:00:27 +0000 | [diff] [blame] | 2540 | |
| 2541 | if (vectorSize == 0) { |
| 2542 | Diag(rawAttr->getAttributeLoc(), diag::err_attribute_zero_size, |
| 2543 | sizeExpr->getSourceRange()); |
Steve Naroff | bea0b34 | 2007-07-29 16:33:31 +0000 | [diff] [blame] | 2544 | return; |
Steve Naroff | 7332292 | 2007-07-18 18:00:27 +0000 | [diff] [blame] | 2545 | } |
Steve Naroff | bea0b34 | 2007-07-29 16:33:31 +0000 | [diff] [blame] | 2546 | // Instantiate/Install the vector type, the number of elements is > 0. |
| 2547 | tDecl->setUnderlyingType(Context.getOCUVectorType(curType, vectorSize)); |
| 2548 | // Remember this typedef decl, we will need it later for diagnostics. |
| 2549 | OCUVectorDecls.push_back(tDecl); |
Steve Naroff | 7332292 | 2007-07-18 18:00:27 +0000 | [diff] [blame] | 2550 | } |
| 2551 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2552 | QualType Sema::HandleVectorTypeAttribute(QualType curType, |
Chris Lattner | a7674d8 | 2007-07-13 22:13:22 +0000 | [diff] [blame] | 2553 | AttributeList *rawAttr) { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2554 | // check the attribute arugments. |
| 2555 | if (rawAttr->getNumArgs() != 1) { |
| 2556 | Diag(rawAttr->getAttributeLoc(), diag::err_attribute_wrong_number_arguments, |
| 2557 | std::string("1")); |
| 2558 | return QualType(); |
| 2559 | } |
| 2560 | Expr *sizeExpr = static_cast<Expr *>(rawAttr->getArg(0)); |
| 2561 | llvm::APSInt vecSize(32); |
Chris Lattner | 590b664 | 2007-07-15 23:26:56 +0000 | [diff] [blame] | 2562 | if (!sizeExpr->isIntegerConstantExpr(vecSize, Context)) { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2563 | Diag(rawAttr->getAttributeLoc(), diag::err_attribute_vector_size_not_int, |
| 2564 | sizeExpr->getSourceRange()); |
| 2565 | return QualType(); |
| 2566 | } |
| 2567 | // navigate to the base type - we need to provide for vector pointers, |
| 2568 | // vector arrays, and functions returning vectors. |
| 2569 | Type *canonType = curType.getCanonicalType().getTypePtr(); |
| 2570 | |
Steve Naroff | 7332292 | 2007-07-18 18:00:27 +0000 | [diff] [blame] | 2571 | if (canonType->isPointerType() || canonType->isArrayType() || |
| 2572 | canonType->isFunctionType()) { |
| 2573 | assert(1 && "HandleVector(): Complex type construction unimplemented"); |
| 2574 | /* FIXME: rebuild the type from the inside out, vectorizing the inner type. |
| 2575 | do { |
| 2576 | if (PointerType *PT = dyn_cast<PointerType>(canonType)) |
| 2577 | canonType = PT->getPointeeType().getTypePtr(); |
| 2578 | else if (ArrayType *AT = dyn_cast<ArrayType>(canonType)) |
| 2579 | canonType = AT->getElementType().getTypePtr(); |
| 2580 | else if (FunctionType *FT = dyn_cast<FunctionType>(canonType)) |
| 2581 | canonType = FT->getResultType().getTypePtr(); |
| 2582 | } while (canonType->isPointerType() || canonType->isArrayType() || |
| 2583 | canonType->isFunctionType()); |
| 2584 | */ |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2585 | } |
| 2586 | // the base type must be integer or float. |
| 2587 | if (!(canonType->isIntegerType() || canonType->isRealFloatingType())) { |
| 2588 | Diag(rawAttr->getAttributeLoc(), diag::err_attribute_invalid_vector_type, |
| 2589 | curType.getCanonicalType().getAsString()); |
| 2590 | return QualType(); |
| 2591 | } |
Chris Lattner | 701e5eb | 2007-09-04 02:45:27 +0000 | [diff] [blame] | 2592 | unsigned typeSize = static_cast<unsigned>( |
| 2593 | Context.getTypeSize(curType, rawAttr->getAttributeLoc())); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2594 | // vecSize is specified in bytes - convert to bits. |
Chris Lattner | 701e5eb | 2007-09-04 02:45:27 +0000 | [diff] [blame] | 2595 | unsigned vectorSize = static_cast<unsigned>(vecSize.getZExtValue() * 8); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2596 | |
| 2597 | // the vector size needs to be an integral multiple of the type size. |
| 2598 | if (vectorSize % typeSize) { |
| 2599 | Diag(rawAttr->getAttributeLoc(), diag::err_attribute_invalid_size, |
| 2600 | sizeExpr->getSourceRange()); |
| 2601 | return QualType(); |
| 2602 | } |
| 2603 | if (vectorSize == 0) { |
| 2604 | Diag(rawAttr->getAttributeLoc(), diag::err_attribute_zero_size, |
| 2605 | sizeExpr->getSourceRange()); |
| 2606 | return QualType(); |
| 2607 | } |
| 2608 | // Since OpenCU requires 3 element vectors (OpenCU 5.1.2), we don't restrict |
| 2609 | // the number of elements to be a power of two (unlike GCC). |
| 2610 | // Instantiate the vector type, the number of elements is > 0. |
Steve Naroff | 7332292 | 2007-07-18 18:00:27 +0000 | [diff] [blame] | 2611 | return Context.getVectorType(curType, vectorSize/typeSize); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2612 | } |
| 2613 | |