Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1 | //===--- SemaDeclAttr.cpp - Declaration Attribute Handling ----------------===// |
| 2 | // |
| 3 | // The LLVM Compiler Infrastructure |
| 4 | // |
| 5 | // This file is distributed under the University of Illinois Open Source |
| 6 | // License. See LICENSE.TXT for details. |
| 7 | // |
| 8 | //===----------------------------------------------------------------------===// |
| 9 | // |
| 10 | // This file implements decl-related attribute processing. |
| 11 | // |
| 12 | //===----------------------------------------------------------------------===// |
| 13 | |
| 14 | #include "Sema.h" |
| 15 | #include "clang/AST/ASTContext.h" |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 16 | #include "clang/Basic/TargetInfo.h" |
Ted Kremenek | 6e1eb87 | 2008-07-22 16:56:21 +0000 | [diff] [blame] | 17 | #include <llvm/ADT/StringExtras.h> |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 18 | using namespace clang; |
| 19 | |
Chris Lattner | e5c5ee1 | 2008-06-29 00:16:31 +0000 | [diff] [blame] | 20 | //===----------------------------------------------------------------------===// |
| 21 | // Helper functions |
| 22 | //===----------------------------------------------------------------------===// |
| 23 | |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 24 | static const FunctionTypeProto *getFunctionProto(Decl *d) { |
| 25 | QualType Ty; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 26 | if (ValueDecl *decl = dyn_cast<ValueDecl>(d)) |
| 27 | Ty = decl->getType(); |
| 28 | else if (FieldDecl *decl = dyn_cast<FieldDecl>(d)) |
| 29 | Ty = decl->getType(); |
| 30 | else if (TypedefDecl* decl = dyn_cast<TypedefDecl>(d)) |
| 31 | Ty = decl->getUnderlyingType(); |
| 32 | else |
| 33 | return 0; |
| 34 | |
| 35 | if (Ty->isFunctionPointerType()) |
| 36 | Ty = Ty->getAsPointerType()->getPointeeType(); |
| 37 | |
| 38 | if (const FunctionType *FnTy = Ty->getAsFunctionType()) |
| 39 | return dyn_cast<FunctionTypeProto>(FnTy->getAsFunctionType()); |
| 40 | |
| 41 | return 0; |
| 42 | } |
| 43 | |
| 44 | static inline bool isNSStringType(QualType T, ASTContext &Ctx) { |
Chris Lattner | b77792e | 2008-07-26 22:17:49 +0000 | [diff] [blame] | 45 | const PointerType *PT = T->getAsPointerType(); |
| 46 | if (!PT) |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 47 | return false; |
| 48 | |
Chris Lattner | b77792e | 2008-07-26 22:17:49 +0000 | [diff] [blame] | 49 | const ObjCInterfaceType *ClsT =PT->getPointeeType()->getAsObjCInterfaceType(); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 50 | if (!ClsT) |
| 51 | return false; |
| 52 | |
| 53 | IdentifierInfo* ClsName = ClsT->getDecl()->getIdentifier(); |
| 54 | |
| 55 | // FIXME: Should we walk the chain of classes? |
| 56 | return ClsName == &Ctx.Idents.get("NSString") || |
| 57 | ClsName == &Ctx.Idents.get("NSMutableString"); |
| 58 | } |
| 59 | |
Chris Lattner | e5c5ee1 | 2008-06-29 00:16:31 +0000 | [diff] [blame] | 60 | //===----------------------------------------------------------------------===// |
Chris Lattner | e5c5ee1 | 2008-06-29 00:16:31 +0000 | [diff] [blame] | 61 | // Attribute Implementations |
| 62 | //===----------------------------------------------------------------------===// |
| 63 | |
Daniel Dunbar | 3068ae0 | 2008-07-31 22:40:48 +0000 | [diff] [blame] | 64 | // FIXME: All this manual attribute parsing code is gross. At the |
| 65 | // least add some helper functions to check most argument patterns (# |
| 66 | // and types of args). |
| 67 | |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 68 | static void HandleExtVectorTypeAttr(Decl *d, const AttributeList &Attr, |
| 69 | Sema &S) { |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 70 | TypedefDecl *tDecl = dyn_cast<TypedefDecl>(d); |
| 71 | if (tDecl == 0) { |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 72 | S.Diag(Attr.getLoc(), diag::err_typecheck_ext_vector_not_typedef); |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 73 | return; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 74 | } |
| 75 | |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 76 | QualType curType = tDecl->getUnderlyingType(); |
| 77 | // check the attribute arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 78 | if (Attr.getNumArgs() != 1) { |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 79 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments, |
| 80 | std::string("1")); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 81 | return; |
| 82 | } |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 83 | Expr *sizeExpr = static_cast<Expr *>(Attr.getArg(0)); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 84 | llvm::APSInt vecSize(32); |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 85 | if (!sizeExpr->isIntegerConstantExpr(vecSize, S.Context)) { |
| 86 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_not_int, |
| 87 | "ext_vector_type", sizeExpr->getSourceRange()); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 88 | return; |
| 89 | } |
| 90 | // unlike gcc's vector_size attribute, we do not allow vectors to be defined |
| 91 | // in conjunction with complex types (pointers, arrays, functions, etc.). |
Chris Lattner | b77792e | 2008-07-26 22:17:49 +0000 | [diff] [blame] | 92 | if (!curType->isIntegerType() && !curType->isRealFloatingType()) { |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 93 | S.Diag(Attr.getLoc(), diag::err_attribute_invalid_vector_type, |
Chris Lattner | b77792e | 2008-07-26 22:17:49 +0000 | [diff] [blame] | 94 | curType.getAsString()); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 95 | return; |
| 96 | } |
| 97 | // unlike gcc's vector_size attribute, the size is specified as the |
| 98 | // number of elements, not the number of bytes. |
| 99 | unsigned vectorSize = static_cast<unsigned>(vecSize.getZExtValue()); |
| 100 | |
| 101 | if (vectorSize == 0) { |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 102 | S.Diag(Attr.getLoc(), diag::err_attribute_zero_size, |
| 103 | sizeExpr->getSourceRange()); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 104 | return; |
| 105 | } |
| 106 | // Instantiate/Install the vector type, the number of elements is > 0. |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 107 | tDecl->setUnderlyingType(S.Context.getExtVectorType(curType, vectorSize)); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 108 | // Remember this typedef decl, we will need it later for diagnostics. |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 109 | S.ExtVectorDecls.push_back(tDecl); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 110 | } |
| 111 | |
Chris Lattner | 065c5a8 | 2008-06-28 23:48:25 +0000 | [diff] [blame] | 112 | |
| 113 | /// HandleVectorSizeAttribute - this attribute is only applicable to |
| 114 | /// integral and float scalars, although arrays, pointers, and function |
| 115 | /// return values are allowed in conjunction with this construct. Aggregates |
| 116 | /// with this attribute are invalid, even if they are of the same size as a |
| 117 | /// corresponding scalar. |
| 118 | /// The raw attribute should contain precisely 1 argument, the vector size |
| 119 | /// for the variable, measured in bytes. If curType and rawAttr are well |
| 120 | /// formed, this routine will return a new vector type. |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 121 | static void HandleVectorSizeAttr(Decl *D, const AttributeList &Attr, Sema &S) { |
Chris Lattner | 065c5a8 | 2008-06-28 23:48:25 +0000 | [diff] [blame] | 122 | QualType CurType; |
| 123 | if (ValueDecl *VD = dyn_cast<ValueDecl>(D)) |
| 124 | CurType = VD->getType(); |
| 125 | else if (TypedefDecl *TD = dyn_cast<TypedefDecl>(D)) |
| 126 | CurType = TD->getUnderlyingType(); |
| 127 | else { |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 128 | S.Diag(D->getLocation(), diag::err_attr_wrong_decl, |
| 129 | std::string("vector_size"), |
| 130 | SourceRange(Attr.getLoc(), Attr.getLoc())); |
Chris Lattner | 065c5a8 | 2008-06-28 23:48:25 +0000 | [diff] [blame] | 131 | return; |
| 132 | } |
| 133 | |
| 134 | // Check the attribute arugments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 135 | if (Attr.getNumArgs() != 1) { |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 136 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments, |
| 137 | std::string("1")); |
Chris Lattner | 065c5a8 | 2008-06-28 23:48:25 +0000 | [diff] [blame] | 138 | return; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 139 | } |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 140 | Expr *sizeExpr = static_cast<Expr *>(Attr.getArg(0)); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 141 | llvm::APSInt vecSize(32); |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 142 | if (!sizeExpr->isIntegerConstantExpr(vecSize, S.Context)) { |
| 143 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_not_int, |
| 144 | "vector_size", sizeExpr->getSourceRange()); |
Chris Lattner | 065c5a8 | 2008-06-28 23:48:25 +0000 | [diff] [blame] | 145 | return; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 146 | } |
| 147 | // navigate to the base type - we need to provide for vector pointers, |
| 148 | // vector arrays, and functions returning vectors. |
Chris Lattner | b77792e | 2008-07-26 22:17:49 +0000 | [diff] [blame] | 149 | if (CurType->isPointerType() || CurType->isArrayType() || |
| 150 | CurType->isFunctionType()) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 151 | assert(0 && "HandleVector(): Complex type construction unimplemented"); |
| 152 | /* FIXME: rebuild the type from the inside out, vectorizing the inner type. |
| 153 | do { |
| 154 | if (PointerType *PT = dyn_cast<PointerType>(canonType)) |
| 155 | canonType = PT->getPointeeType().getTypePtr(); |
| 156 | else if (ArrayType *AT = dyn_cast<ArrayType>(canonType)) |
| 157 | canonType = AT->getElementType().getTypePtr(); |
| 158 | else if (FunctionType *FT = dyn_cast<FunctionType>(canonType)) |
| 159 | canonType = FT->getResultType().getTypePtr(); |
| 160 | } while (canonType->isPointerType() || canonType->isArrayType() || |
| 161 | canonType->isFunctionType()); |
| 162 | */ |
| 163 | } |
| 164 | // the base type must be integer or float. |
Chris Lattner | b77792e | 2008-07-26 22:17:49 +0000 | [diff] [blame] | 165 | if (!CurType->isIntegerType() && !CurType->isRealFloatingType()) { |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 166 | S.Diag(Attr.getLoc(), diag::err_attribute_invalid_vector_type, |
Chris Lattner | b77792e | 2008-07-26 22:17:49 +0000 | [diff] [blame] | 167 | CurType.getAsString()); |
Chris Lattner | 065c5a8 | 2008-06-28 23:48:25 +0000 | [diff] [blame] | 168 | return; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 169 | } |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 170 | unsigned typeSize = static_cast<unsigned>(S.Context.getTypeSize(CurType)); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 171 | // vecSize is specified in bytes - convert to bits. |
| 172 | unsigned vectorSize = static_cast<unsigned>(vecSize.getZExtValue() * 8); |
| 173 | |
| 174 | // the vector size needs to be an integral multiple of the type size. |
| 175 | if (vectorSize % typeSize) { |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 176 | S.Diag(Attr.getLoc(), diag::err_attribute_invalid_size, |
| 177 | sizeExpr->getSourceRange()); |
Chris Lattner | 065c5a8 | 2008-06-28 23:48:25 +0000 | [diff] [blame] | 178 | return; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 179 | } |
| 180 | if (vectorSize == 0) { |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 181 | S.Diag(Attr.getLoc(), diag::err_attribute_zero_size, |
| 182 | sizeExpr->getSourceRange()); |
Chris Lattner | 065c5a8 | 2008-06-28 23:48:25 +0000 | [diff] [blame] | 183 | return; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 184 | } |
Chris Lattner | 065c5a8 | 2008-06-28 23:48:25 +0000 | [diff] [blame] | 185 | |
| 186 | // Success! Instantiate the vector type, the number of elements is > 0, and |
| 187 | // not required to be a power of 2, unlike GCC. |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 188 | CurType = S.Context.getVectorType(CurType, vectorSize/typeSize); |
Chris Lattner | 065c5a8 | 2008-06-28 23:48:25 +0000 | [diff] [blame] | 189 | |
| 190 | if (ValueDecl *VD = dyn_cast<ValueDecl>(D)) |
| 191 | VD->setType(CurType); |
| 192 | else |
| 193 | cast<TypedefDecl>(D)->setUnderlyingType(CurType); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 194 | } |
| 195 | |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 196 | static void HandlePackedAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 197 | // check the attribute arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 198 | if (Attr.getNumArgs() > 0) { |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 199 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments, |
| 200 | std::string("0")); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 201 | return; |
| 202 | } |
| 203 | |
| 204 | if (TagDecl *TD = dyn_cast<TagDecl>(d)) |
Chris Lattner | 49e2d34 | 2008-06-28 23:50:44 +0000 | [diff] [blame] | 205 | TD->addAttr(new PackedAttr()); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 206 | else if (FieldDecl *FD = dyn_cast<FieldDecl>(d)) { |
| 207 | // If the alignment is less than or equal to 8 bits, the packed attribute |
| 208 | // has no effect. |
| 209 | if (!FD->getType()->isIncompleteType() && |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 210 | S.Context.getTypeAlign(FD->getType()) <= 8) |
| 211 | S.Diag(Attr.getLoc(), |
| 212 | diag::warn_attribute_ignored_for_field_of_type, |
| 213 | Attr.getName()->getName(), FD->getType().getAsString()); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 214 | else |
Chris Lattner | 49e2d34 | 2008-06-28 23:50:44 +0000 | [diff] [blame] | 215 | FD->addAttr(new PackedAttr()); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 216 | } else |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 217 | S.Diag(Attr.getLoc(), diag::warn_attribute_ignored, |
| 218 | Attr.getName()->getName()); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 219 | } |
| 220 | |
Ted Kremenek | 96329d4 | 2008-07-15 22:26:48 +0000 | [diff] [blame] | 221 | static void HandleIBOutletAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
| 222 | // check the attribute arguments. |
| 223 | if (Attr.getNumArgs() > 0) { |
| 224 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments, |
| 225 | std::string("0")); |
| 226 | return; |
| 227 | } |
| 228 | |
| 229 | // The IBOutlet attribute only applies to instance variables of Objective-C |
| 230 | // classes. |
| 231 | if (ObjCIvarDecl *ID = dyn_cast<ObjCIvarDecl>(d)) |
| 232 | ID->addAttr(new IBOutletAttr()); |
| 233 | else |
| 234 | S.Diag(Attr.getLoc(), diag::err_attribute_iboutlet_non_ivar); |
| 235 | } |
| 236 | |
Ted Kremenek | eb2b2a3 | 2008-07-21 21:53:04 +0000 | [diff] [blame] | 237 | static void HandleNonNullAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
| 238 | |
| 239 | // GCC ignores the nonnull attribute on K&R style function |
| 240 | // prototypes, so we ignore it as well |
| 241 | const FunctionTypeProto *proto = getFunctionProto(d); |
Ted Kremenek | eb2b2a3 | 2008-07-21 21:53:04 +0000 | [diff] [blame] | 242 | if (!proto) { |
| 243 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type, |
| 244 | "nonnull", "function"); |
| 245 | return; |
| 246 | } |
| 247 | |
| 248 | unsigned NumArgs = proto->getNumArgs(); |
| 249 | |
| 250 | // The nonnull attribute only applies to pointers. |
| 251 | llvm::SmallVector<unsigned, 10> NonNullArgs; |
| 252 | |
| 253 | for (AttributeList::arg_iterator I=Attr.arg_begin(), |
| 254 | E=Attr.arg_end(); I!=E; ++I) { |
| 255 | |
| 256 | |
| 257 | // The argument must be an integer constant expression. |
| 258 | Expr *Ex = static_cast<Expr *>(Attr.getArg(0)); |
| 259 | llvm::APSInt ArgNum(32); |
| 260 | if (!Ex->isIntegerConstantExpr(ArgNum, S.Context)) { |
| 261 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_not_int, |
| 262 | "nonnull", Ex->getSourceRange()); |
| 263 | return; |
| 264 | } |
| 265 | |
| 266 | unsigned x = (unsigned) ArgNum.getZExtValue(); |
| 267 | |
| 268 | if (x < 1 || x > NumArgs) { |
| 269 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_out_of_bounds, |
Ted Kremenek | 6e1eb87 | 2008-07-22 16:56:21 +0000 | [diff] [blame] | 270 | "nonnull", llvm::utostr_32(I.getArgNum()), Ex->getSourceRange()); |
Ted Kremenek | eb2b2a3 | 2008-07-21 21:53:04 +0000 | [diff] [blame] | 271 | return; |
| 272 | } |
Ted Kremenek | 465172f | 2008-07-21 22:09:15 +0000 | [diff] [blame] | 273 | |
| 274 | --x; |
Ted Kremenek | eb2b2a3 | 2008-07-21 21:53:04 +0000 | [diff] [blame] | 275 | |
| 276 | // Is the function argument a pointer type? |
Chris Lattner | b77792e | 2008-07-26 22:17:49 +0000 | [diff] [blame] | 277 | if (!proto->getArgType(x)->isPointerType()) { |
Ted Kremenek | eb2b2a3 | 2008-07-21 21:53:04 +0000 | [diff] [blame] | 278 | // FIXME: Should also highlight argument in decl. |
| 279 | S.Diag(Attr.getLoc(), diag::err_nonnull_pointers_only, |
| 280 | "nonnull", Ex->getSourceRange()); |
| 281 | return; |
| 282 | } |
| 283 | |
| 284 | NonNullArgs.push_back(x); |
| 285 | } |
| 286 | |
| 287 | if (!NonNullArgs.empty()) { |
| 288 | unsigned* start = &NonNullArgs[0]; |
| 289 | unsigned size = NonNullArgs.size(); |
| 290 | std::sort(start, start + size); |
| 291 | d->addAttr(new NonNullAttr(start, size)); |
| 292 | } |
| 293 | else |
| 294 | d->addAttr(new NonNullAttr()); |
| 295 | } |
| 296 | |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 297 | static void HandleAliasAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 298 | // check the attribute arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 299 | if (Attr.getNumArgs() != 1) { |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 300 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments, |
| 301 | std::string("1")); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 302 | return; |
| 303 | } |
| 304 | |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 305 | Expr *Arg = static_cast<Expr*>(Attr.getArg(0)); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 306 | Arg = Arg->IgnoreParenCasts(); |
| 307 | StringLiteral *Str = dyn_cast<StringLiteral>(Arg); |
| 308 | |
| 309 | if (Str == 0 || Str->isWide()) { |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 310 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_string, |
| 311 | "alias", std::string("1")); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 312 | return; |
| 313 | } |
| 314 | |
| 315 | const char *Alias = Str->getStrData(); |
| 316 | unsigned AliasLen = Str->getByteLength(); |
| 317 | |
| 318 | // FIXME: check if target symbol exists in current file |
| 319 | |
| 320 | d->addAttr(new AliasAttr(std::string(Alias, AliasLen))); |
| 321 | } |
| 322 | |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 323 | static void HandleNoReturnAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 324 | // check the attribute arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 325 | if (Attr.getNumArgs() != 0) { |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 326 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments, |
| 327 | std::string("0")); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 328 | return; |
| 329 | } |
| 330 | |
| 331 | FunctionDecl *Fn = dyn_cast<FunctionDecl>(d); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 332 | if (!Fn) { |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 333 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type, |
| 334 | "noreturn", "function"); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 335 | return; |
| 336 | } |
| 337 | |
| 338 | d->addAttr(new NoReturnAttr()); |
| 339 | } |
| 340 | |
Ted Kremenek | 7379889 | 2008-07-25 04:39:19 +0000 | [diff] [blame] | 341 | static void HandleUnusedAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
| 342 | // check the attribute arguments. |
| 343 | if (Attr.getNumArgs() != 0) { |
| 344 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments, |
| 345 | std::string("0")); |
| 346 | return; |
| 347 | } |
| 348 | |
| 349 | VarDecl *VD = dyn_cast<VarDecl>(d); |
| 350 | |
| 351 | if (!VD) { |
| 352 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type, |
| 353 | "unused", "variable"); |
| 354 | return; |
| 355 | } |
| 356 | |
| 357 | d->addAttr(new UnusedAttr()); |
| 358 | } |
| 359 | |
Daniel Dunbar | 3068ae0 | 2008-07-31 22:40:48 +0000 | [diff] [blame] | 360 | static void HandleConstructorAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
| 361 | // check the attribute arguments. |
| 362 | if (Attr.getNumArgs() != 0 && Attr.getNumArgs() != 1) { |
| 363 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments, "0 or 1"); |
| 364 | return; |
| 365 | } |
| 366 | |
| 367 | int priority = 65535; // FIXME: Do not hardcode such constants. |
| 368 | if (Attr.getNumArgs() > 0) { |
| 369 | Expr *E = static_cast<Expr *>(Attr.getArg(0)); |
| 370 | llvm::APSInt Idx(32); |
| 371 | if (!E->isIntegerConstantExpr(Idx, S.Context)) { |
| 372 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_int, |
| 373 | "constructor", "1", E->getSourceRange()); |
| 374 | return; |
| 375 | } |
| 376 | priority = Idx.getZExtValue(); |
| 377 | } |
| 378 | |
| 379 | FunctionDecl *Fn = dyn_cast<FunctionDecl>(d); |
| 380 | if (!Fn) { |
| 381 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type, |
| 382 | "constructor", "function"); |
| 383 | return; |
| 384 | } |
| 385 | |
| 386 | d->addAttr(new ConstructorAttr(priority)); |
| 387 | } |
| 388 | |
| 389 | static void HandleDestructorAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
| 390 | // check the attribute arguments. |
| 391 | if (Attr.getNumArgs() != 0 && Attr.getNumArgs() != 1) { |
| 392 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments, "0 or 1"); |
| 393 | return; |
| 394 | } |
| 395 | |
| 396 | int priority = 65535; // FIXME: Do not hardcode such constants. |
| 397 | if (Attr.getNumArgs() > 0) { |
| 398 | Expr *E = static_cast<Expr *>(Attr.getArg(0)); |
| 399 | llvm::APSInt Idx(32); |
| 400 | if (!E->isIntegerConstantExpr(Idx, S.Context)) { |
| 401 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_int, |
| 402 | "destructor", "1", E->getSourceRange()); |
| 403 | return; |
| 404 | } |
| 405 | priority = Idx.getZExtValue(); |
| 406 | } |
| 407 | |
| 408 | FunctionDecl *Fn = dyn_cast<FunctionDecl>(d); |
| 409 | if (!Fn) { |
| 410 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type, |
| 411 | "destructor", "function"); |
| 412 | return; |
| 413 | } |
| 414 | |
| 415 | d->addAttr(new DestructorAttr(priority)); |
| 416 | } |
| 417 | |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 418 | static void HandleDeprecatedAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 419 | // check the attribute arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 420 | if (Attr.getNumArgs() != 0) { |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 421 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments, |
| 422 | std::string("0")); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 423 | return; |
| 424 | } |
| 425 | |
| 426 | d->addAttr(new DeprecatedAttr()); |
| 427 | } |
| 428 | |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 429 | static void HandleVisibilityAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 430 | // check the attribute arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 431 | if (Attr.getNumArgs() != 1) { |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 432 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments, |
| 433 | std::string("1")); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 434 | return; |
| 435 | } |
| 436 | |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 437 | Expr *Arg = static_cast<Expr*>(Attr.getArg(0)); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 438 | Arg = Arg->IgnoreParenCasts(); |
| 439 | StringLiteral *Str = dyn_cast<StringLiteral>(Arg); |
| 440 | |
| 441 | if (Str == 0 || Str->isWide()) { |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 442 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_string, |
| 443 | "visibility", std::string("1")); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 444 | return; |
| 445 | } |
| 446 | |
| 447 | const char *TypeStr = Str->getStrData(); |
| 448 | unsigned TypeLen = Str->getByteLength(); |
| 449 | VisibilityAttr::VisibilityTypes type; |
| 450 | |
| 451 | if (TypeLen == 7 && !memcmp(TypeStr, "default", 7)) |
| 452 | type = VisibilityAttr::DefaultVisibility; |
| 453 | else if (TypeLen == 6 && !memcmp(TypeStr, "hidden", 6)) |
| 454 | type = VisibilityAttr::HiddenVisibility; |
| 455 | else if (TypeLen == 8 && !memcmp(TypeStr, "internal", 8)) |
| 456 | type = VisibilityAttr::HiddenVisibility; // FIXME |
| 457 | else if (TypeLen == 9 && !memcmp(TypeStr, "protected", 9)) |
| 458 | type = VisibilityAttr::ProtectedVisibility; |
| 459 | else { |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 460 | S.Diag(Attr.getLoc(), diag::warn_attribute_type_not_supported, |
| 461 | "visibility", TypeStr); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 462 | return; |
| 463 | } |
| 464 | |
| 465 | d->addAttr(new VisibilityAttr(type)); |
| 466 | } |
| 467 | |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 468 | static void HandleWeakAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 469 | // check the attribute arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 470 | if (Attr.getNumArgs() != 0) { |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 471 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments, |
| 472 | std::string("0")); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 473 | return; |
| 474 | } |
| 475 | |
| 476 | d->addAttr(new WeakAttr()); |
| 477 | } |
| 478 | |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 479 | static void HandleDLLImportAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 480 | // check the attribute arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 481 | if (Attr.getNumArgs() != 0) { |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 482 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments, |
| 483 | std::string("0")); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 484 | return; |
| 485 | } |
| 486 | |
| 487 | d->addAttr(new DLLImportAttr()); |
| 488 | } |
| 489 | |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 490 | static void HandleDLLExportAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 491 | // check the attribute arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 492 | if (Attr.getNumArgs() != 0) { |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 493 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments, |
| 494 | std::string("0")); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 495 | return; |
| 496 | } |
| 497 | |
| 498 | d->addAttr(new DLLExportAttr()); |
| 499 | } |
| 500 | |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 501 | static void HandleStdCallAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 502 | // check the attribute arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 503 | if (Attr.getNumArgs() != 0) { |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 504 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments, |
| 505 | std::string("0")); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 506 | return; |
| 507 | } |
| 508 | |
| 509 | d->addAttr(new StdCallAttr()); |
| 510 | } |
| 511 | |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 512 | static void HandleFastCallAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 513 | // check the attribute arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 514 | if (Attr.getNumArgs() != 0) { |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 515 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments, |
| 516 | std::string("0")); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 517 | return; |
| 518 | } |
| 519 | |
| 520 | d->addAttr(new FastCallAttr()); |
| 521 | } |
| 522 | |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 523 | static void HandleNothrowAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 524 | // check the attribute arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 525 | if (Attr.getNumArgs() != 0) { |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 526 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments, |
| 527 | std::string("0")); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 528 | return; |
| 529 | } |
| 530 | |
| 531 | d->addAttr(new NoThrowAttr()); |
| 532 | } |
| 533 | |
| 534 | /// Handle __attribute__((format(type,idx,firstarg))) attributes |
| 535 | /// based on http://gcc.gnu.org/onlinedocs/gcc/Function-Attributes.html |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 536 | static void HandleFormatAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 537 | |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 538 | if (!Attr.getParameterName()) { |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 539 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_string, |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 540 | "format", std::string("1")); |
| 541 | return; |
| 542 | } |
| 543 | |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 544 | if (Attr.getNumArgs() != 2) { |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 545 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments, |
| 546 | std::string("3")); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 547 | return; |
| 548 | } |
| 549 | |
| 550 | // GCC ignores the format attribute on K&R style function |
| 551 | // prototypes, so we ignore it as well |
| 552 | const FunctionTypeProto *proto = getFunctionProto(d); |
| 553 | |
| 554 | if (!proto) { |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 555 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type, |
| 556 | "format", "function"); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 557 | return; |
| 558 | } |
| 559 | |
| 560 | // FIXME: in C++ the implicit 'this' function parameter also counts. |
| 561 | // this is needed in order to be compatible with GCC |
| 562 | // the index must start in 1 and the limit is numargs+1 |
| 563 | unsigned NumArgs = proto->getNumArgs(); |
| 564 | unsigned FirstIdx = 1; |
| 565 | |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 566 | const char *Format = Attr.getParameterName()->getName(); |
| 567 | unsigned FormatLen = Attr.getParameterName()->getLength(); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 568 | |
| 569 | // Normalize the argument, __foo__ becomes foo. |
| 570 | if (FormatLen > 4 && Format[0] == '_' && Format[1] == '_' && |
| 571 | Format[FormatLen - 2] == '_' && Format[FormatLen - 1] == '_') { |
| 572 | Format += 2; |
| 573 | FormatLen -= 4; |
| 574 | } |
| 575 | |
| 576 | bool Supported = false; |
| 577 | bool is_NSString = false; |
| 578 | bool is_strftime = false; |
| 579 | |
| 580 | switch (FormatLen) { |
| 581 | default: break; |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 582 | case 5: Supported = !memcmp(Format, "scanf", 5); break; |
| 583 | case 6: Supported = !memcmp(Format, "printf", 6); break; |
| 584 | case 7: Supported = !memcmp(Format, "strfmon", 7); break; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 585 | case 8: |
| 586 | Supported = (is_strftime = !memcmp(Format, "strftime", 8)) || |
| 587 | (is_NSString = !memcmp(Format, "NSString", 8)); |
| 588 | break; |
| 589 | } |
| 590 | |
| 591 | if (!Supported) { |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 592 | S.Diag(Attr.getLoc(), diag::warn_attribute_type_not_supported, |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 593 | "format", Attr.getParameterName()->getName()); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 594 | return; |
| 595 | } |
| 596 | |
| 597 | // checks for the 2nd argument |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 598 | Expr *IdxExpr = static_cast<Expr *>(Attr.getArg(0)); |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 599 | llvm::APSInt Idx(32); |
| 600 | if (!IdxExpr->isIntegerConstantExpr(Idx, S.Context)) { |
| 601 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_int, |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 602 | "format", std::string("2"), IdxExpr->getSourceRange()); |
| 603 | return; |
| 604 | } |
| 605 | |
| 606 | if (Idx.getZExtValue() < FirstIdx || Idx.getZExtValue() > NumArgs) { |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 607 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_out_of_bounds, |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 608 | "format", std::string("2"), IdxExpr->getSourceRange()); |
| 609 | return; |
| 610 | } |
| 611 | |
| 612 | // FIXME: Do we need to bounds check? |
| 613 | unsigned ArgIdx = Idx.getZExtValue() - 1; |
| 614 | |
| 615 | // make sure the format string is really a string |
| 616 | QualType Ty = proto->getArgType(ArgIdx); |
| 617 | |
| 618 | if (is_NSString) { |
| 619 | // FIXME: do we need to check if the type is NSString*? What are |
| 620 | // the semantics? |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 621 | if (!isNSStringType(Ty, S.Context)) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 622 | // FIXME: Should highlight the actual expression that has the |
| 623 | // wrong type. |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 624 | S.Diag(Attr.getLoc(), diag::err_format_attribute_not_NSString, |
| 625 | IdxExpr->getSourceRange()); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 626 | return; |
| 627 | } |
| 628 | } else if (!Ty->isPointerType() || |
| 629 | !Ty->getAsPointerType()->getPointeeType()->isCharType()) { |
| 630 | // FIXME: Should highlight the actual expression that has the |
| 631 | // wrong type. |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 632 | S.Diag(Attr.getLoc(), diag::err_format_attribute_not_string, |
| 633 | IdxExpr->getSourceRange()); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 634 | return; |
| 635 | } |
| 636 | |
| 637 | // check the 3rd argument |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 638 | Expr *FirstArgExpr = static_cast<Expr *>(Attr.getArg(1)); |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 639 | llvm::APSInt FirstArg(32); |
| 640 | if (!FirstArgExpr->isIntegerConstantExpr(FirstArg, S.Context)) { |
| 641 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_int, |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 642 | "format", std::string("3"), FirstArgExpr->getSourceRange()); |
| 643 | return; |
| 644 | } |
| 645 | |
| 646 | // check if the function is variadic if the 3rd argument non-zero |
| 647 | if (FirstArg != 0) { |
| 648 | if (proto->isVariadic()) { |
| 649 | ++NumArgs; // +1 for ... |
| 650 | } else { |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 651 | S.Diag(d->getLocation(), diag::err_format_attribute_requires_variadic); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 652 | return; |
| 653 | } |
| 654 | } |
| 655 | |
| 656 | // strftime requires FirstArg to be 0 because it doesn't read from any variable |
| 657 | // the input is just the current time + the format string |
| 658 | if (is_strftime) { |
| 659 | if (FirstArg != 0) { |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 660 | S.Diag(Attr.getLoc(), diag::err_format_strftime_third_parameter, |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 661 | FirstArgExpr->getSourceRange()); |
| 662 | return; |
| 663 | } |
| 664 | // if 0 it disables parameter checking (to use with e.g. va_list) |
| 665 | } else if (FirstArg != 0 && FirstArg != NumArgs) { |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 666 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_out_of_bounds, |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 667 | "format", std::string("3"), FirstArgExpr->getSourceRange()); |
| 668 | return; |
| 669 | } |
| 670 | |
| 671 | d->addAttr(new FormatAttr(std::string(Format, FormatLen), |
| 672 | Idx.getZExtValue(), FirstArg.getZExtValue())); |
| 673 | } |
| 674 | |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 675 | static void HandleTransparentUnionAttr(Decl *d, const AttributeList &Attr, |
| 676 | Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 677 | // check the attribute arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 678 | if (Attr.getNumArgs() != 0) { |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 679 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments, |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 680 | std::string("0")); |
| 681 | return; |
| 682 | } |
| 683 | |
| 684 | TypeDecl *decl = dyn_cast<TypeDecl>(d); |
| 685 | |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 686 | if (!decl || !S.Context.getTypeDeclType(decl)->isUnionType()) { |
| 687 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type, |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 688 | "transparent_union", "union"); |
| 689 | return; |
| 690 | } |
| 691 | |
| 692 | //QualType QTy = Context.getTypeDeclType(decl); |
| 693 | //const RecordType *Ty = QTy->getAsUnionType(); |
| 694 | |
| 695 | // FIXME |
| 696 | // Ty->addAttr(new TransparentUnionAttr()); |
| 697 | } |
| 698 | |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 699 | static void HandleAnnotateAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 700 | // check the attribute arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 701 | if (Attr.getNumArgs() != 1) { |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 702 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments, |
| 703 | std::string("1")); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 704 | return; |
| 705 | } |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 706 | Expr *argExpr = static_cast<Expr *>(Attr.getArg(0)); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 707 | StringLiteral *SE = dyn_cast<StringLiteral>(argExpr); |
| 708 | |
| 709 | // Make sure that there is a string literal as the annotation's single |
| 710 | // argument. |
| 711 | if (!SE) { |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 712 | S.Diag(Attr.getLoc(), diag::err_attribute_annotate_no_string); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 713 | return; |
| 714 | } |
| 715 | d->addAttr(new AnnotateAttr(std::string(SE->getStrData(), |
| 716 | SE->getByteLength()))); |
| 717 | } |
| 718 | |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 719 | static void HandleAlignedAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 720 | // check the attribute arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 721 | if (Attr.getNumArgs() > 1) { |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 722 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments, |
| 723 | std::string("1")); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 724 | return; |
| 725 | } |
| 726 | |
| 727 | unsigned Align = 0; |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 728 | if (Attr.getNumArgs() == 0) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 729 | // FIXME: This should be the target specific maximum alignment. |
| 730 | // (For now we just use 128 bits which is the maximum on X86. |
| 731 | Align = 128; |
| 732 | return; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 733 | } |
Chris Lattner | 49e2d34 | 2008-06-28 23:50:44 +0000 | [diff] [blame] | 734 | |
| 735 | Expr *alignmentExpr = static_cast<Expr *>(Attr.getArg(0)); |
| 736 | llvm::APSInt Alignment(32); |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 737 | if (!alignmentExpr->isIntegerConstantExpr(Alignment, S.Context)) { |
| 738 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_not_int, |
| 739 | "aligned", alignmentExpr->getSourceRange()); |
Chris Lattner | 49e2d34 | 2008-06-28 23:50:44 +0000 | [diff] [blame] | 740 | return; |
| 741 | } |
| 742 | d->addAttr(new AlignedAttr(Alignment.getZExtValue() * 8)); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 743 | } |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 744 | |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 745 | /// HandleModeAttr - This attribute modifies the width of a decl with |
Chris Lattner | 065c5a8 | 2008-06-28 23:48:25 +0000 | [diff] [blame] | 746 | /// primitive type. |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 747 | /// |
| 748 | /// Despite what would be logical, the mode attribute is a decl attribute, |
| 749 | /// not a type attribute: 'int ** __attribute((mode(HI))) *G;' tries to make |
| 750 | /// 'G' be HImode, not an intermediate pointer. |
| 751 | /// |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 752 | static void HandleModeAttr(Decl *D, const AttributeList &Attr, Sema &S) { |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 753 | // This attribute isn't documented, but glibc uses it. It changes |
| 754 | // the width of an int or unsigned int to the specified size. |
| 755 | |
| 756 | // Check that there aren't any arguments |
| 757 | if (Attr.getNumArgs() != 0) { |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 758 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments, |
| 759 | std::string("0")); |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 760 | return; |
| 761 | } |
| 762 | |
| 763 | IdentifierInfo *Name = Attr.getParameterName(); |
| 764 | if (!Name) { |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 765 | S.Diag(Attr.getLoc(), diag::err_attribute_missing_parameter_name); |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 766 | return; |
| 767 | } |
| 768 | const char *Str = Name->getName(); |
| 769 | unsigned Len = Name->getLength(); |
| 770 | |
| 771 | // Normalize the attribute name, __foo__ becomes foo. |
| 772 | if (Len > 4 && Str[0] == '_' && Str[1] == '_' && |
| 773 | Str[Len - 2] == '_' && Str[Len - 1] == '_') { |
| 774 | Str += 2; |
| 775 | Len -= 4; |
| 776 | } |
| 777 | |
| 778 | unsigned DestWidth = 0; |
| 779 | bool IntegerMode = true; |
| 780 | switch (Len) { |
| 781 | case 2: |
| 782 | if (!memcmp(Str, "QI", 2)) { DestWidth = 8; break; } |
| 783 | if (!memcmp(Str, "HI", 2)) { DestWidth = 16; break; } |
| 784 | if (!memcmp(Str, "SI", 2)) { DestWidth = 32; break; } |
| 785 | if (!memcmp(Str, "DI", 2)) { DestWidth = 64; break; } |
| 786 | if (!memcmp(Str, "TI", 2)) { DestWidth = 128; break; } |
| 787 | if (!memcmp(Str, "SF", 2)) { DestWidth = 32; IntegerMode = false; break; } |
| 788 | if (!memcmp(Str, "DF", 2)) { DestWidth = 64; IntegerMode = false; break; } |
| 789 | if (!memcmp(Str, "XF", 2)) { DestWidth = 96; IntegerMode = false; break; } |
| 790 | if (!memcmp(Str, "TF", 2)) { DestWidth = 128; IntegerMode = false; break; } |
| 791 | break; |
| 792 | case 4: |
| 793 | // FIXME: glibc uses 'word' to define register_t; this is narrower than a |
| 794 | // pointer on PIC16 and other embedded platforms. |
| 795 | if (!memcmp(Str, "word", 4)) |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 796 | DestWidth = S.Context.Target.getPointerWidth(0); |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 797 | if (!memcmp(Str, "byte", 4)) |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 798 | DestWidth = S.Context.Target.getCharWidth(); |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 799 | break; |
| 800 | case 7: |
| 801 | if (!memcmp(Str, "pointer", 7)) |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 802 | DestWidth = S.Context.Target.getPointerWidth(0); |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 803 | break; |
| 804 | } |
| 805 | |
| 806 | QualType OldTy; |
| 807 | if (TypedefDecl *TD = dyn_cast<TypedefDecl>(D)) |
| 808 | OldTy = TD->getUnderlyingType(); |
| 809 | else if (ValueDecl *VD = dyn_cast<ValueDecl>(D)) |
| 810 | OldTy = VD->getType(); |
| 811 | else { |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 812 | S.Diag(D->getLocation(), diag::err_attr_wrong_decl, "mode", |
| 813 | SourceRange(Attr.getLoc(), Attr.getLoc())); |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 814 | return; |
| 815 | } |
| 816 | |
| 817 | // FIXME: Need proper fixed-width types |
| 818 | QualType NewTy; |
| 819 | switch (DestWidth) { |
| 820 | case 0: |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 821 | S.Diag(Attr.getLoc(), diag::err_unknown_machine_mode, Name->getName()); |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 822 | return; |
| 823 | default: |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 824 | S.Diag(Attr.getLoc(), diag::err_unsupported_machine_mode, Name->getName()); |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 825 | return; |
| 826 | case 8: |
| 827 | assert(IntegerMode); |
| 828 | if (OldTy->isSignedIntegerType()) |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 829 | NewTy = S.Context.SignedCharTy; |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 830 | else |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 831 | NewTy = S.Context.UnsignedCharTy; |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 832 | break; |
| 833 | case 16: |
| 834 | assert(IntegerMode); |
| 835 | if (OldTy->isSignedIntegerType()) |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 836 | NewTy = S.Context.ShortTy; |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 837 | else |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 838 | NewTy = S.Context.UnsignedShortTy; |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 839 | break; |
| 840 | case 32: |
| 841 | if (!IntegerMode) |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 842 | NewTy = S.Context.FloatTy; |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 843 | else if (OldTy->isSignedIntegerType()) |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 844 | NewTy = S.Context.IntTy; |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 845 | else |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 846 | NewTy = S.Context.UnsignedIntTy; |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 847 | break; |
| 848 | case 64: |
| 849 | if (!IntegerMode) |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 850 | NewTy = S.Context.DoubleTy; |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 851 | else if (OldTy->isSignedIntegerType()) |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 852 | NewTy = S.Context.LongLongTy; |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 853 | else |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 854 | NewTy = S.Context.UnsignedLongLongTy; |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 855 | break; |
| 856 | } |
| 857 | |
| 858 | if (!OldTy->getAsBuiltinType()) |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 859 | S.Diag(Attr.getLoc(), diag::err_mode_not_primitive); |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 860 | else if (!(IntegerMode && OldTy->isIntegerType()) && |
| 861 | !(!IntegerMode && OldTy->isFloatingType())) { |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 862 | S.Diag(Attr.getLoc(), diag::err_mode_wrong_type); |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 863 | } |
| 864 | |
| 865 | // Install the new type. |
| 866 | if (TypedefDecl *TD = dyn_cast<TypedefDecl>(D)) |
| 867 | TD->setUnderlyingType(NewTy); |
| 868 | else |
| 869 | cast<ValueDecl>(D)->setType(NewTy); |
| 870 | } |
Chris Lattner | 0744e5f | 2008-06-29 00:23:49 +0000 | [diff] [blame] | 871 | |
| 872 | //===----------------------------------------------------------------------===// |
| 873 | // Top Level Sema Entry Points |
| 874 | //===----------------------------------------------------------------------===// |
| 875 | |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 876 | /// HandleDeclAttribute - Apply the specific attribute to the specified decl if |
| 877 | /// the attribute applies to decls. If the attribute is a type attribute, just |
| 878 | /// silently ignore it. |
| 879 | static void ProcessDeclAttribute(Decl *D, const AttributeList &Attr, Sema &S) { |
| 880 | switch (Attr.getKind()) { |
Daniel Dunbar | 3068ae0 | 2008-07-31 22:40:48 +0000 | [diff] [blame] | 881 | case AttributeList::AT_IBOutlet: HandleIBOutletAttr (D, Attr, S); break; |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 882 | case AttributeList::AT_address_space: |
| 883 | // Ignore this, this is a type attribute, handled by ProcessTypeAttributes. |
| 884 | break; |
Daniel Dunbar | 3068ae0 | 2008-07-31 22:40:48 +0000 | [diff] [blame] | 885 | case AttributeList::AT_alias: HandleAliasAttr (D, Attr, S); break; |
| 886 | case AttributeList::AT_aligned: HandleAlignedAttr (D, Attr, S); break; |
| 887 | case AttributeList::AT_annotate: HandleAnnotateAttr (D, Attr, S); break; |
| 888 | case AttributeList::AT_constructor: HandleConstructorAttr(D, Attr, S); break; |
| 889 | case AttributeList::AT_deprecated: HandleDeprecatedAttr(D, Attr, S); break; |
| 890 | case AttributeList::AT_destructor: HandleDestructorAttr(D, Attr, S); break; |
| 891 | case AttributeList::AT_dllexport: HandleDLLExportAttr (D, Attr, S); break; |
| 892 | case AttributeList::AT_dllimport: HandleDLLImportAttr (D, Attr, S); break; |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 893 | case AttributeList::AT_ext_vector_type: |
| 894 | HandleExtVectorTypeAttr(D, Attr, S); |
| 895 | break; |
Daniel Dunbar | 3068ae0 | 2008-07-31 22:40:48 +0000 | [diff] [blame] | 896 | case AttributeList::AT_fastcall: HandleFastCallAttr (D, Attr, S); break; |
| 897 | case AttributeList::AT_format: HandleFormatAttr (D, Attr, S); break; |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 898 | case AttributeList::AT_mode: HandleModeAttr (D, Attr, S); break; |
Daniel Dunbar | 3068ae0 | 2008-07-31 22:40:48 +0000 | [diff] [blame] | 899 | case AttributeList::AT_nonnull: HandleNonNullAttr (D, Attr, S); break; |
| 900 | case AttributeList::AT_noreturn: HandleNoReturnAttr (D, Attr, S); break; |
| 901 | case AttributeList::AT_nothrow: HandleNothrowAttr (D, Attr, S); break; |
| 902 | case AttributeList::AT_packed: HandlePackedAttr (D, Attr, S); break; |
| 903 | case AttributeList::AT_stdcall: HandleStdCallAttr (D, Attr, S); break; |
| 904 | case AttributeList::AT_unused: HandleUnusedAttr (D, Attr, S); break; |
| 905 | case AttributeList::AT_vector_size: HandleVectorSizeAttr(D, Attr, S); break; |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 906 | case AttributeList::AT_visibility: HandleVisibilityAttr(D, Attr, S); break; |
| 907 | case AttributeList::AT_weak: HandleWeakAttr (D, Attr, S); break; |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 908 | case AttributeList::AT_transparent_union: |
| 909 | HandleTransparentUnionAttr(D, Attr, S); |
| 910 | break; |
| 911 | default: |
| 912 | #if 0 |
| 913 | // TODO: when we have the full set of attributes, warn about unknown ones. |
| 914 | S.Diag(Attr->getLoc(), diag::warn_attribute_ignored, |
| 915 | Attr->getName()->getName()); |
| 916 | #endif |
| 917 | break; |
| 918 | } |
| 919 | } |
| 920 | |
| 921 | /// ProcessDeclAttributeList - Apply all the decl attributes in the specified |
| 922 | /// attribute list to the specified decl, ignoring any type attributes. |
| 923 | void Sema::ProcessDeclAttributeList(Decl *D, const AttributeList *AttrList) { |
| 924 | while (AttrList) { |
| 925 | ProcessDeclAttribute(D, *AttrList, *this); |
| 926 | AttrList = AttrList->getNext(); |
| 927 | } |
| 928 | } |
| 929 | |
| 930 | |
Chris Lattner | 0744e5f | 2008-06-29 00:23:49 +0000 | [diff] [blame] | 931 | /// ProcessDeclAttributes - Given a declarator (PD) with attributes indicated in |
| 932 | /// it, apply them to D. This is a bit tricky because PD can have attributes |
| 933 | /// specified in many different places, and we need to find and apply them all. |
| 934 | void Sema::ProcessDeclAttributes(Decl *D, const Declarator &PD) { |
| 935 | // Apply decl attributes from the DeclSpec if present. |
| 936 | if (const AttributeList *Attrs = PD.getDeclSpec().getAttributes()) |
| 937 | ProcessDeclAttributeList(D, Attrs); |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 938 | |
Chris Lattner | 0744e5f | 2008-06-29 00:23:49 +0000 | [diff] [blame] | 939 | // Walk the declarator structure, applying decl attributes that were in a type |
| 940 | // position to the decl itself. This handles cases like: |
| 941 | // int *__attr__(x)** D; |
| 942 | // when X is a decl attribute. |
| 943 | for (unsigned i = 0, e = PD.getNumTypeObjects(); i != e; ++i) |
| 944 | if (const AttributeList *Attrs = PD.getTypeObject(i).getAttrs()) |
| 945 | ProcessDeclAttributeList(D, Attrs); |
| 946 | |
| 947 | // Finally, apply any attributes on the decl itself. |
| 948 | if (const AttributeList *Attrs = PD.getAttributes()) |
| 949 | ProcessDeclAttributeList(D, Attrs); |
| 950 | } |
| 951 | |