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" |
Daniel Dunbar | acc5f3e | 2008-08-11 06:23:49 +0000 | [diff] [blame] | 16 | #include "clang/AST/DeclObjC.h" |
| 17 | #include "clang/AST/Expr.h" |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 18 | #include "clang/Basic/TargetInfo.h" |
Daniel Dunbar | 12bc692 | 2008-08-11 03:27:53 +0000 | [diff] [blame] | 19 | #include "clang/Parse/DeclSpec.h" |
Ted Kremenek | 6e1eb87 | 2008-07-22 16:56:21 +0000 | [diff] [blame] | 20 | #include <llvm/ADT/StringExtras.h> |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 21 | using namespace clang; |
| 22 | |
Chris Lattner | e5c5ee1 | 2008-06-29 00:16:31 +0000 | [diff] [blame] | 23 | //===----------------------------------------------------------------------===// |
| 24 | // Helper functions |
| 25 | //===----------------------------------------------------------------------===// |
| 26 | |
Daniel Dunbar | d3f2c10 | 2008-10-19 02:04:16 +0000 | [diff] [blame] | 27 | static const FunctionType *getFunctionType(Decl *d) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 28 | QualType Ty; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 29 | if (ValueDecl *decl = dyn_cast<ValueDecl>(d)) |
| 30 | Ty = decl->getType(); |
| 31 | else if (FieldDecl *decl = dyn_cast<FieldDecl>(d)) |
| 32 | Ty = decl->getType(); |
| 33 | else if (TypedefDecl* decl = dyn_cast<TypedefDecl>(d)) |
| 34 | Ty = decl->getUnderlyingType(); |
| 35 | else |
| 36 | return 0; |
| 37 | |
| 38 | if (Ty->isFunctionPointerType()) |
| 39 | Ty = Ty->getAsPointerType()->getPointeeType(); |
Daniel Dunbar | d3f2c10 | 2008-10-19 02:04:16 +0000 | [diff] [blame] | 40 | |
| 41 | return Ty->getAsFunctionType(); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 42 | } |
| 43 | |
Daniel Dunbar | 3568249 | 2008-09-26 04:12:28 +0000 | [diff] [blame] | 44 | // FIXME: We should provide an abstraction around a method or function |
| 45 | // to provide the following bits of information. |
| 46 | |
Daniel Dunbar | d3f2c10 | 2008-10-19 02:04:16 +0000 | [diff] [blame] | 47 | /// isFunctionOrMethod - Return true if the given decl has function |
| 48 | /// type (function or function-typed variable) or an Objective-C |
| 49 | /// method. |
Daniel Dunbar | 3568249 | 2008-09-26 04:12:28 +0000 | [diff] [blame] | 50 | static bool isFunctionOrMethod(Decl *d) { |
Daniel Dunbar | d3f2c10 | 2008-10-19 02:04:16 +0000 | [diff] [blame] | 51 | return getFunctionType(d) || isa<ObjCMethodDecl>(d); |
Daniel Dunbar | 3568249 | 2008-09-26 04:12:28 +0000 | [diff] [blame] | 52 | } |
| 53 | |
Daniel Dunbar | d3f2c10 | 2008-10-19 02:04:16 +0000 | [diff] [blame] | 54 | /// hasFunctionProto - Return true if the given decl has a argument |
| 55 | /// information. This decl should have already passed |
| 56 | /// isFunctionOrMethod. |
| 57 | static bool hasFunctionProto(Decl *d) { |
| 58 | if (const FunctionType *FnTy = getFunctionType(d)) { |
| 59 | return isa<FunctionTypeProto>(FnTy); |
| 60 | } else { |
| 61 | assert(isa<ObjCMethodDecl>(d)); |
| 62 | return true; |
| 63 | } |
| 64 | } |
| 65 | |
| 66 | /// getFunctionOrMethodNumArgs - Return number of function or method |
| 67 | /// arguments. It is an error to call this on a K&R function (use |
| 68 | /// hasFunctionProto first). |
Daniel Dunbar | 3568249 | 2008-09-26 04:12:28 +0000 | [diff] [blame] | 69 | static unsigned getFunctionOrMethodNumArgs(Decl *d) { |
Daniel Dunbar | d3f2c10 | 2008-10-19 02:04:16 +0000 | [diff] [blame] | 70 | if (const FunctionType *FnTy = getFunctionType(d)) { |
| 71 | const FunctionTypeProto *proto = cast<FunctionTypeProto>(FnTy); |
Daniel Dunbar | 3568249 | 2008-09-26 04:12:28 +0000 | [diff] [blame] | 72 | return proto->getNumArgs(); |
| 73 | } else { |
| 74 | return cast<ObjCMethodDecl>(d)->getNumParams(); |
| 75 | } |
| 76 | } |
| 77 | |
| 78 | static QualType getFunctionOrMethodArgType(Decl *d, unsigned Idx) { |
Daniel Dunbar | d3f2c10 | 2008-10-19 02:04:16 +0000 | [diff] [blame] | 79 | if (const FunctionType *FnTy = getFunctionType(d)) { |
| 80 | const FunctionTypeProto *proto = cast<FunctionTypeProto>(FnTy); |
Daniel Dunbar | 3568249 | 2008-09-26 04:12:28 +0000 | [diff] [blame] | 81 | return proto->getArgType(Idx); |
| 82 | } else { |
| 83 | return cast<ObjCMethodDecl>(d)->getParamDecl(Idx)->getType(); |
| 84 | } |
| 85 | } |
| 86 | |
| 87 | static bool isFunctionOrMethodVariadic(Decl *d) { |
Daniel Dunbar | d3f2c10 | 2008-10-19 02:04:16 +0000 | [diff] [blame] | 88 | if (const FunctionType *FnTy = getFunctionType(d)) { |
| 89 | const FunctionTypeProto *proto = cast<FunctionTypeProto>(FnTy); |
Daniel Dunbar | 3568249 | 2008-09-26 04:12:28 +0000 | [diff] [blame] | 90 | return proto->isVariadic(); |
| 91 | } else { |
| 92 | return cast<ObjCMethodDecl>(d)->isVariadic(); |
| 93 | } |
| 94 | } |
| 95 | |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 96 | static inline bool isNSStringType(QualType T, ASTContext &Ctx) { |
Chris Lattner | b77792e | 2008-07-26 22:17:49 +0000 | [diff] [blame] | 97 | const PointerType *PT = T->getAsPointerType(); |
| 98 | if (!PT) |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 99 | return false; |
| 100 | |
Chris Lattner | b77792e | 2008-07-26 22:17:49 +0000 | [diff] [blame] | 101 | const ObjCInterfaceType *ClsT =PT->getPointeeType()->getAsObjCInterfaceType(); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 102 | if (!ClsT) |
| 103 | return false; |
| 104 | |
| 105 | IdentifierInfo* ClsName = ClsT->getDecl()->getIdentifier(); |
| 106 | |
| 107 | // FIXME: Should we walk the chain of classes? |
| 108 | return ClsName == &Ctx.Idents.get("NSString") || |
| 109 | ClsName == &Ctx.Idents.get("NSMutableString"); |
| 110 | } |
| 111 | |
Daniel Dunbar | 085e8f7 | 2008-09-26 03:32:58 +0000 | [diff] [blame] | 112 | static inline bool isCFStringType(QualType T, ASTContext &Ctx) { |
| 113 | const PointerType *PT = T->getAsPointerType(); |
| 114 | if (!PT) |
| 115 | return false; |
| 116 | |
| 117 | const RecordType *RT = PT->getPointeeType()->getAsRecordType(); |
| 118 | if (!RT) |
| 119 | return false; |
| 120 | |
| 121 | const RecordDecl *RD = RT->getDecl(); |
| 122 | if (RD->getTagKind() != TagDecl::TK_struct) |
| 123 | return false; |
| 124 | |
| 125 | return RD->getIdentifier() == &Ctx.Idents.get("__CFString"); |
| 126 | } |
| 127 | |
Chris Lattner | e5c5ee1 | 2008-06-29 00:16:31 +0000 | [diff] [blame] | 128 | //===----------------------------------------------------------------------===// |
Chris Lattner | e5c5ee1 | 2008-06-29 00:16:31 +0000 | [diff] [blame] | 129 | // Attribute Implementations |
| 130 | //===----------------------------------------------------------------------===// |
| 131 | |
Daniel Dunbar | 3068ae0 | 2008-07-31 22:40:48 +0000 | [diff] [blame] | 132 | // FIXME: All this manual attribute parsing code is gross. At the |
| 133 | // least add some helper functions to check most argument patterns (# |
| 134 | // and types of args). |
| 135 | |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 136 | static void HandleExtVectorTypeAttr(Decl *d, const AttributeList &Attr, |
| 137 | Sema &S) { |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 138 | TypedefDecl *tDecl = dyn_cast<TypedefDecl>(d); |
| 139 | if (tDecl == 0) { |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 140 | S.Diag(Attr.getLoc(), diag::err_typecheck_ext_vector_not_typedef); |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 141 | return; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 142 | } |
| 143 | |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 144 | QualType curType = tDecl->getUnderlyingType(); |
| 145 | // check the attribute arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 146 | if (Attr.getNumArgs() != 1) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 147 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 148 | return; |
| 149 | } |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 150 | Expr *sizeExpr = static_cast<Expr *>(Attr.getArg(0)); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 151 | llvm::APSInt vecSize(32); |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 152 | if (!sizeExpr->isIntegerConstantExpr(vecSize, S.Context)) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 153 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_not_int) |
| 154 | << "ext_vector_type" << sizeExpr->getSourceRange(); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 155 | return; |
| 156 | } |
| 157 | // unlike gcc's vector_size attribute, we do not allow vectors to be defined |
| 158 | // in conjunction with complex types (pointers, arrays, functions, etc.). |
Chris Lattner | b77792e | 2008-07-26 22:17:49 +0000 | [diff] [blame] | 159 | if (!curType->isIntegerType() && !curType->isRealFloatingType()) { |
Chris Lattner | d162584 | 2008-11-24 06:25:27 +0000 | [diff] [blame] | 160 | S.Diag(Attr.getLoc(), diag::err_attribute_invalid_vector_type) << curType; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 161 | return; |
| 162 | } |
| 163 | // unlike gcc's vector_size attribute, the size is specified as the |
| 164 | // number of elements, not the number of bytes. |
| 165 | unsigned vectorSize = static_cast<unsigned>(vecSize.getZExtValue()); |
| 166 | |
| 167 | if (vectorSize == 0) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 168 | S.Diag(Attr.getLoc(), diag::err_attribute_zero_size) |
| 169 | << sizeExpr->getSourceRange(); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 170 | return; |
| 171 | } |
| 172 | // Instantiate/Install the vector type, the number of elements is > 0. |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 173 | tDecl->setUnderlyingType(S.Context.getExtVectorType(curType, vectorSize)); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 174 | // Remember this typedef decl, we will need it later for diagnostics. |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 175 | S.ExtVectorDecls.push_back(tDecl); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 176 | } |
| 177 | |
Chris Lattner | 065c5a8 | 2008-06-28 23:48:25 +0000 | [diff] [blame] | 178 | |
| 179 | /// HandleVectorSizeAttribute - this attribute is only applicable to |
| 180 | /// integral and float scalars, although arrays, pointers, and function |
| 181 | /// return values are allowed in conjunction with this construct. Aggregates |
| 182 | /// with this attribute are invalid, even if they are of the same size as a |
| 183 | /// corresponding scalar. |
| 184 | /// The raw attribute should contain precisely 1 argument, the vector size |
| 185 | /// for the variable, measured in bytes. If curType and rawAttr are well |
| 186 | /// formed, this routine will return a new vector type. |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 187 | static void HandleVectorSizeAttr(Decl *D, const AttributeList &Attr, Sema &S) { |
Chris Lattner | 065c5a8 | 2008-06-28 23:48:25 +0000 | [diff] [blame] | 188 | QualType CurType; |
| 189 | if (ValueDecl *VD = dyn_cast<ValueDecl>(D)) |
| 190 | CurType = VD->getType(); |
| 191 | else if (TypedefDecl *TD = dyn_cast<TypedefDecl>(D)) |
| 192 | CurType = TD->getUnderlyingType(); |
| 193 | else { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 194 | S.Diag(D->getLocation(), diag::err_attr_wrong_decl) |
| 195 | << "vector_size" << SourceRange(Attr.getLoc(), Attr.getLoc()); |
Chris Lattner | 065c5a8 | 2008-06-28 23:48:25 +0000 | [diff] [blame] | 196 | return; |
| 197 | } |
| 198 | |
| 199 | // Check the attribute arugments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 200 | if (Attr.getNumArgs() != 1) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 201 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; |
Chris Lattner | 065c5a8 | 2008-06-28 23:48:25 +0000 | [diff] [blame] | 202 | return; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 203 | } |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 204 | Expr *sizeExpr = static_cast<Expr *>(Attr.getArg(0)); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 205 | llvm::APSInt vecSize(32); |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 206 | if (!sizeExpr->isIntegerConstantExpr(vecSize, S.Context)) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 207 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_not_int) |
| 208 | << "vector_size" << sizeExpr->getSourceRange(); |
Chris Lattner | 065c5a8 | 2008-06-28 23:48:25 +0000 | [diff] [blame] | 209 | return; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 210 | } |
| 211 | // navigate to the base type - we need to provide for vector pointers, |
| 212 | // vector arrays, and functions returning vectors. |
Chris Lattner | b77792e | 2008-07-26 22:17:49 +0000 | [diff] [blame] | 213 | if (CurType->isPointerType() || CurType->isArrayType() || |
| 214 | CurType->isFunctionType()) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 215 | assert(0 && "HandleVector(): Complex type construction unimplemented"); |
| 216 | /* FIXME: rebuild the type from the inside out, vectorizing the inner type. |
| 217 | do { |
| 218 | if (PointerType *PT = dyn_cast<PointerType>(canonType)) |
| 219 | canonType = PT->getPointeeType().getTypePtr(); |
| 220 | else if (ArrayType *AT = dyn_cast<ArrayType>(canonType)) |
| 221 | canonType = AT->getElementType().getTypePtr(); |
| 222 | else if (FunctionType *FT = dyn_cast<FunctionType>(canonType)) |
| 223 | canonType = FT->getResultType().getTypePtr(); |
| 224 | } while (canonType->isPointerType() || canonType->isArrayType() || |
| 225 | canonType->isFunctionType()); |
| 226 | */ |
| 227 | } |
| 228 | // the base type must be integer or float. |
Chris Lattner | b77792e | 2008-07-26 22:17:49 +0000 | [diff] [blame] | 229 | if (!CurType->isIntegerType() && !CurType->isRealFloatingType()) { |
Chris Lattner | d162584 | 2008-11-24 06:25:27 +0000 | [diff] [blame] | 230 | S.Diag(Attr.getLoc(), diag::err_attribute_invalid_vector_type) << CurType; |
Chris Lattner | 065c5a8 | 2008-06-28 23:48:25 +0000 | [diff] [blame] | 231 | return; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 232 | } |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 233 | unsigned typeSize = static_cast<unsigned>(S.Context.getTypeSize(CurType)); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 234 | // vecSize is specified in bytes - convert to bits. |
| 235 | unsigned vectorSize = static_cast<unsigned>(vecSize.getZExtValue() * 8); |
| 236 | |
| 237 | // the vector size needs to be an integral multiple of the type size. |
| 238 | if (vectorSize % typeSize) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 239 | S.Diag(Attr.getLoc(), diag::err_attribute_invalid_size) |
| 240 | << sizeExpr->getSourceRange(); |
Chris Lattner | 065c5a8 | 2008-06-28 23:48:25 +0000 | [diff] [blame] | 241 | return; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 242 | } |
| 243 | if (vectorSize == 0) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 244 | S.Diag(Attr.getLoc(), diag::err_attribute_zero_size) |
| 245 | << sizeExpr->getSourceRange(); |
Chris Lattner | 065c5a8 | 2008-06-28 23:48:25 +0000 | [diff] [blame] | 246 | return; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 247 | } |
Chris Lattner | 065c5a8 | 2008-06-28 23:48:25 +0000 | [diff] [blame] | 248 | |
| 249 | // Success! Instantiate the vector type, the number of elements is > 0, and |
| 250 | // not required to be a power of 2, unlike GCC. |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 251 | CurType = S.Context.getVectorType(CurType, vectorSize/typeSize); |
Chris Lattner | 065c5a8 | 2008-06-28 23:48:25 +0000 | [diff] [blame] | 252 | |
| 253 | if (ValueDecl *VD = dyn_cast<ValueDecl>(D)) |
| 254 | VD->setType(CurType); |
| 255 | else |
| 256 | cast<TypedefDecl>(D)->setUnderlyingType(CurType); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 257 | } |
| 258 | |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 259 | static void HandlePackedAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 260 | // check the attribute arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 261 | if (Attr.getNumArgs() > 0) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 262 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 263 | return; |
| 264 | } |
| 265 | |
| 266 | if (TagDecl *TD = dyn_cast<TagDecl>(d)) |
Daniel Dunbar | 3b0db90 | 2008-10-16 02:34:03 +0000 | [diff] [blame] | 267 | TD->addAttr(new PackedAttr(1)); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 268 | else if (FieldDecl *FD = dyn_cast<FieldDecl>(d)) { |
| 269 | // If the alignment is less than or equal to 8 bits, the packed attribute |
| 270 | // has no effect. |
| 271 | if (!FD->getType()->isIncompleteType() && |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 272 | S.Context.getTypeAlign(FD->getType()) <= 8) |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 273 | S.Diag(Attr.getLoc(), diag::warn_attribute_ignored_for_field_of_type) |
Chris Lattner | 08631c5 | 2008-11-23 21:45:46 +0000 | [diff] [blame] | 274 | << Attr.getName() << FD->getType(); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 275 | else |
Daniel Dunbar | 3b0db90 | 2008-10-16 02:34:03 +0000 | [diff] [blame] | 276 | FD->addAttr(new PackedAttr(1)); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 277 | } else |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 278 | S.Diag(Attr.getLoc(), diag::warn_attribute_ignored) << Attr.getName(); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 279 | } |
| 280 | |
Ted Kremenek | 96329d4 | 2008-07-15 22:26:48 +0000 | [diff] [blame] | 281 | static void HandleIBOutletAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
| 282 | // check the attribute arguments. |
| 283 | if (Attr.getNumArgs() > 0) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 284 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
Ted Kremenek | 96329d4 | 2008-07-15 22:26:48 +0000 | [diff] [blame] | 285 | return; |
| 286 | } |
| 287 | |
| 288 | // The IBOutlet attribute only applies to instance variables of Objective-C |
| 289 | // classes. |
| 290 | if (ObjCIvarDecl *ID = dyn_cast<ObjCIvarDecl>(d)) |
| 291 | ID->addAttr(new IBOutletAttr()); |
| 292 | else |
| 293 | S.Diag(Attr.getLoc(), diag::err_attribute_iboutlet_non_ivar); |
| 294 | } |
| 295 | |
Ted Kremenek | eb2b2a3 | 2008-07-21 21:53:04 +0000 | [diff] [blame] | 296 | static void HandleNonNullAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Ted Kremenek | eb2b2a3 | 2008-07-21 21:53:04 +0000 | [diff] [blame] | 297 | // GCC ignores the nonnull attribute on K&R style function |
| 298 | // prototypes, so we ignore it as well |
Daniel Dunbar | d3f2c10 | 2008-10-19 02:04:16 +0000 | [diff] [blame] | 299 | if (!isFunctionOrMethod(d) || !hasFunctionProto(d)) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 300 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) |
| 301 | << "nonnull" << "function"; |
Ted Kremenek | eb2b2a3 | 2008-07-21 21:53:04 +0000 | [diff] [blame] | 302 | return; |
| 303 | } |
| 304 | |
Daniel Dunbar | d3f2c10 | 2008-10-19 02:04:16 +0000 | [diff] [blame] | 305 | unsigned NumArgs = getFunctionOrMethodNumArgs(d); |
Ted Kremenek | eb2b2a3 | 2008-07-21 21:53:04 +0000 | [diff] [blame] | 306 | |
| 307 | // The nonnull attribute only applies to pointers. |
| 308 | llvm::SmallVector<unsigned, 10> NonNullArgs; |
| 309 | |
| 310 | for (AttributeList::arg_iterator I=Attr.arg_begin(), |
| 311 | E=Attr.arg_end(); I!=E; ++I) { |
| 312 | |
| 313 | |
| 314 | // The argument must be an integer constant expression. |
Ted Kremenek | f5e8834 | 2008-12-04 19:38:33 +0000 | [diff] [blame] | 315 | Expr *Ex = static_cast<Expr *>(*I); |
Ted Kremenek | eb2b2a3 | 2008-07-21 21:53:04 +0000 | [diff] [blame] | 316 | llvm::APSInt ArgNum(32); |
| 317 | if (!Ex->isIntegerConstantExpr(ArgNum, S.Context)) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 318 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_not_int) |
| 319 | << "nonnull" << Ex->getSourceRange(); |
Ted Kremenek | eb2b2a3 | 2008-07-21 21:53:04 +0000 | [diff] [blame] | 320 | return; |
| 321 | } |
| 322 | |
| 323 | unsigned x = (unsigned) ArgNum.getZExtValue(); |
| 324 | |
| 325 | if (x < 1 || x > NumArgs) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 326 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_out_of_bounds) |
Chris Lattner | 30bc965 | 2008-11-19 07:22:31 +0000 | [diff] [blame] | 327 | << "nonnull" << I.getArgNum() << Ex->getSourceRange(); |
Ted Kremenek | eb2b2a3 | 2008-07-21 21:53:04 +0000 | [diff] [blame] | 328 | return; |
| 329 | } |
Ted Kremenek | 465172f | 2008-07-21 22:09:15 +0000 | [diff] [blame] | 330 | |
| 331 | --x; |
Ted Kremenek | eb2b2a3 | 2008-07-21 21:53:04 +0000 | [diff] [blame] | 332 | |
| 333 | // Is the function argument a pointer type? |
Ted Kremenek | 46bbaca | 2008-11-18 06:52:58 +0000 | [diff] [blame] | 334 | QualType T = getFunctionOrMethodArgType(d, x); |
| 335 | if (!T->isPointerType() && !T->isBlockPointerType()) { |
Ted Kremenek | eb2b2a3 | 2008-07-21 21:53:04 +0000 | [diff] [blame] | 336 | // FIXME: Should also highlight argument in decl. |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 337 | S.Diag(Attr.getLoc(), diag::err_nonnull_pointers_only) |
| 338 | << "nonnull" << Ex->getSourceRange(); |
Ted Kremenek | 7fb43c1 | 2008-09-01 19:57:52 +0000 | [diff] [blame] | 339 | continue; |
Ted Kremenek | eb2b2a3 | 2008-07-21 21:53:04 +0000 | [diff] [blame] | 340 | } |
| 341 | |
| 342 | NonNullArgs.push_back(x); |
| 343 | } |
| 344 | |
Ted Kremenek | 7fb43c1 | 2008-09-01 19:57:52 +0000 | [diff] [blame] | 345 | // If no arguments were specified to __attribute__((nonnull)) then all |
| 346 | // pointer arguments have a nonnull attribute. |
| 347 | if (NonNullArgs.empty()) { |
Ted Kremenek | 46bbaca | 2008-11-18 06:52:58 +0000 | [diff] [blame] | 348 | for (unsigned I = 0, E = getFunctionOrMethodNumArgs(d); I != E; ++I) { |
| 349 | QualType T = getFunctionOrMethodArgType(d, I); |
| 350 | if (T->isPointerType() || T->isBlockPointerType()) |
Daniel Dunbar | d3f2c10 | 2008-10-19 02:04:16 +0000 | [diff] [blame] | 351 | NonNullArgs.push_back(I); |
Ted Kremenek | 46bbaca | 2008-11-18 06:52:58 +0000 | [diff] [blame] | 352 | } |
Ted Kremenek | 7fb43c1 | 2008-09-01 19:57:52 +0000 | [diff] [blame] | 353 | |
| 354 | if (NonNullArgs.empty()) { |
| 355 | S.Diag(Attr.getLoc(), diag::warn_attribute_nonnull_no_pointers); |
| 356 | return; |
| 357 | } |
Ted Kremenek | eb2b2a3 | 2008-07-21 21:53:04 +0000 | [diff] [blame] | 358 | } |
Ted Kremenek | 7fb43c1 | 2008-09-01 19:57:52 +0000 | [diff] [blame] | 359 | |
| 360 | unsigned* start = &NonNullArgs[0]; |
| 361 | unsigned size = NonNullArgs.size(); |
| 362 | std::sort(start, start + size); |
| 363 | d->addAttr(new NonNullAttr(start, size)); |
Ted Kremenek | eb2b2a3 | 2008-07-21 21:53:04 +0000 | [diff] [blame] | 364 | } |
| 365 | |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 366 | static void HandleAliasAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 367 | // check the attribute arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 368 | if (Attr.getNumArgs() != 1) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 369 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 370 | return; |
| 371 | } |
| 372 | |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 373 | Expr *Arg = static_cast<Expr*>(Attr.getArg(0)); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 374 | Arg = Arg->IgnoreParenCasts(); |
| 375 | StringLiteral *Str = dyn_cast<StringLiteral>(Arg); |
| 376 | |
| 377 | if (Str == 0 || Str->isWide()) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 378 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_string) |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 379 | << "alias" << 1; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 380 | return; |
| 381 | } |
| 382 | |
| 383 | const char *Alias = Str->getStrData(); |
| 384 | unsigned AliasLen = Str->getByteLength(); |
| 385 | |
| 386 | // FIXME: check if target symbol exists in current file |
| 387 | |
| 388 | d->addAttr(new AliasAttr(std::string(Alias, AliasLen))); |
| 389 | } |
| 390 | |
Daniel Dunbar | af668b0 | 2008-10-28 00:17:57 +0000 | [diff] [blame] | 391 | static void HandleAlwaysInlineAttr(Decl *d, const AttributeList &Attr, |
| 392 | Sema &S) { |
| 393 | // check the attribute arguments. |
| 394 | if (Attr.getNumArgs() != 0) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 395 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
Daniel Dunbar | af668b0 | 2008-10-28 00:17:57 +0000 | [diff] [blame] | 396 | return; |
| 397 | } |
| 398 | |
| 399 | d->addAttr(new AlwaysInlineAttr()); |
| 400 | } |
| 401 | |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 402 | static void HandleNoReturnAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 403 | // check the attribute arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 404 | if (Attr.getNumArgs() != 0) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 405 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 406 | return; |
| 407 | } |
Daniel Dunbar | d3f2c10 | 2008-10-19 02:04:16 +0000 | [diff] [blame] | 408 | |
| 409 | if (!isFunctionOrMethod(d)) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 410 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) |
| 411 | << "noreturn" << "function"; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 412 | return; |
| 413 | } |
| 414 | |
| 415 | d->addAttr(new NoReturnAttr()); |
| 416 | } |
| 417 | |
Ted Kremenek | 7379889 | 2008-07-25 04:39:19 +0000 | [diff] [blame] | 418 | static void HandleUnusedAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
| 419 | // check the attribute arguments. |
| 420 | if (Attr.getNumArgs() != 0) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 421 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
Ted Kremenek | 7379889 | 2008-07-25 04:39:19 +0000 | [diff] [blame] | 422 | return; |
| 423 | } |
| 424 | |
Daniel Dunbar | d3f2c10 | 2008-10-19 02:04:16 +0000 | [diff] [blame] | 425 | if (!isa<VarDecl>(d) && !isFunctionOrMethod(d)) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 426 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) |
| 427 | << "unused" << "variable and function"; |
Ted Kremenek | 7379889 | 2008-07-25 04:39:19 +0000 | [diff] [blame] | 428 | return; |
| 429 | } |
| 430 | |
| 431 | d->addAttr(new UnusedAttr()); |
| 432 | } |
| 433 | |
Daniel Dunbar | b805dad | 2009-02-13 19:23:53 +0000 | [diff] [blame^] | 434 | static void HandleUsedAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
| 435 | // check the attribute arguments. |
| 436 | if (Attr.getNumArgs() != 0) { |
| 437 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
| 438 | return; |
| 439 | } |
| 440 | |
| 441 | if (const VarDecl *VD = dyn_cast<VarDecl>(d)) { |
| 442 | if (VD->hasLocalStorage()) { |
| 443 | S.Diag(Attr.getLoc(), diag::warn_attribute_ignored) << "used"; |
| 444 | return; |
| 445 | } |
| 446 | } else if (!isFunctionOrMethod(d)) { |
| 447 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) |
| 448 | << "used" << "variable and function"; |
| 449 | return; |
| 450 | } |
| 451 | |
| 452 | d->addAttr(new UsedAttr()); |
| 453 | } |
| 454 | |
Daniel Dunbar | 3068ae0 | 2008-07-31 22:40:48 +0000 | [diff] [blame] | 455 | static void HandleConstructorAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
| 456 | // check the attribute arguments. |
| 457 | if (Attr.getNumArgs() != 0 && Attr.getNumArgs() != 1) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 458 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) |
| 459 | << "0 or 1"; |
Daniel Dunbar | 3068ae0 | 2008-07-31 22:40:48 +0000 | [diff] [blame] | 460 | return; |
| 461 | } |
| 462 | |
| 463 | int priority = 65535; // FIXME: Do not hardcode such constants. |
| 464 | if (Attr.getNumArgs() > 0) { |
| 465 | Expr *E = static_cast<Expr *>(Attr.getArg(0)); |
| 466 | llvm::APSInt Idx(32); |
| 467 | if (!E->isIntegerConstantExpr(Idx, S.Context)) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 468 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_int) |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 469 | << "constructor" << 1 << E->getSourceRange(); |
Daniel Dunbar | 3068ae0 | 2008-07-31 22:40:48 +0000 | [diff] [blame] | 470 | return; |
| 471 | } |
| 472 | priority = Idx.getZExtValue(); |
| 473 | } |
| 474 | |
| 475 | FunctionDecl *Fn = dyn_cast<FunctionDecl>(d); |
| 476 | if (!Fn) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 477 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) |
| 478 | << "constructor" << "function"; |
Daniel Dunbar | 3068ae0 | 2008-07-31 22:40:48 +0000 | [diff] [blame] | 479 | return; |
| 480 | } |
| 481 | |
| 482 | d->addAttr(new ConstructorAttr(priority)); |
| 483 | } |
| 484 | |
| 485 | static void HandleDestructorAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
| 486 | // check the attribute arguments. |
| 487 | if (Attr.getNumArgs() != 0 && Attr.getNumArgs() != 1) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 488 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) |
| 489 | << "0 or 1"; |
Daniel Dunbar | 3068ae0 | 2008-07-31 22:40:48 +0000 | [diff] [blame] | 490 | return; |
| 491 | } |
| 492 | |
| 493 | int priority = 65535; // FIXME: Do not hardcode such constants. |
| 494 | if (Attr.getNumArgs() > 0) { |
| 495 | Expr *E = static_cast<Expr *>(Attr.getArg(0)); |
| 496 | llvm::APSInt Idx(32); |
| 497 | if (!E->isIntegerConstantExpr(Idx, S.Context)) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 498 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_int) |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 499 | << "destructor" << 1 << E->getSourceRange(); |
Daniel Dunbar | 3068ae0 | 2008-07-31 22:40:48 +0000 | [diff] [blame] | 500 | return; |
| 501 | } |
| 502 | priority = Idx.getZExtValue(); |
| 503 | } |
| 504 | |
Anders Carlsson | 6782fc6 | 2008-08-22 22:10:48 +0000 | [diff] [blame] | 505 | if (!isa<FunctionDecl>(d)) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 506 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) |
| 507 | << "destructor" << "function"; |
Daniel Dunbar | 3068ae0 | 2008-07-31 22:40:48 +0000 | [diff] [blame] | 508 | return; |
| 509 | } |
| 510 | |
| 511 | d->addAttr(new DestructorAttr(priority)); |
| 512 | } |
| 513 | |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 514 | static void HandleDeprecatedAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 515 | // check the attribute arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 516 | if (Attr.getNumArgs() != 0) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 517 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 518 | return; |
| 519 | } |
| 520 | |
| 521 | d->addAttr(new DeprecatedAttr()); |
| 522 | } |
| 523 | |
Fariborz Jahanian | bc1c877 | 2008-12-17 01:07:27 +0000 | [diff] [blame] | 524 | static void HandleUnavailableAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
| 525 | // check the attribute arguments. |
| 526 | if (Attr.getNumArgs() != 0) { |
| 527 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
| 528 | return; |
| 529 | } |
| 530 | |
| 531 | d->addAttr(new UnavailableAttr()); |
| 532 | } |
| 533 | |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 534 | static void HandleVisibilityAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 535 | // check the attribute arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 536 | if (Attr.getNumArgs() != 1) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 537 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 538 | return; |
| 539 | } |
| 540 | |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 541 | Expr *Arg = static_cast<Expr*>(Attr.getArg(0)); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 542 | Arg = Arg->IgnoreParenCasts(); |
| 543 | StringLiteral *Str = dyn_cast<StringLiteral>(Arg); |
| 544 | |
| 545 | if (Str == 0 || Str->isWide()) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 546 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_string) |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 547 | << "visibility" << 1; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 548 | return; |
| 549 | } |
| 550 | |
| 551 | const char *TypeStr = Str->getStrData(); |
| 552 | unsigned TypeLen = Str->getByteLength(); |
| 553 | VisibilityAttr::VisibilityTypes type; |
| 554 | |
| 555 | if (TypeLen == 7 && !memcmp(TypeStr, "default", 7)) |
| 556 | type = VisibilityAttr::DefaultVisibility; |
| 557 | else if (TypeLen == 6 && !memcmp(TypeStr, "hidden", 6)) |
| 558 | type = VisibilityAttr::HiddenVisibility; |
| 559 | else if (TypeLen == 8 && !memcmp(TypeStr, "internal", 8)) |
| 560 | type = VisibilityAttr::HiddenVisibility; // FIXME |
| 561 | else if (TypeLen == 9 && !memcmp(TypeStr, "protected", 9)) |
| 562 | type = VisibilityAttr::ProtectedVisibility; |
| 563 | else { |
Chris Lattner | 08631c5 | 2008-11-23 21:45:46 +0000 | [diff] [blame] | 564 | S.Diag(Attr.getLoc(), diag::warn_attribute_unknown_visibility) << TypeStr; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 565 | return; |
| 566 | } |
| 567 | |
| 568 | d->addAttr(new VisibilityAttr(type)); |
| 569 | } |
| 570 | |
Anders Carlsson | aa0d25b | 2008-08-23 23:22:21 +0000 | [diff] [blame] | 571 | static void HandleObjCGCAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Anders Carlsson | 6e14a8f | 2008-08-24 16:33:25 +0000 | [diff] [blame] | 572 | if (!Attr.getParameterName()) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 573 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_string) |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 574 | << "objc_gc" << 1; |
Anders Carlsson | aa0d25b | 2008-08-23 23:22:21 +0000 | [diff] [blame] | 575 | return; |
| 576 | } |
| 577 | |
| 578 | if (Attr.getNumArgs() != 0) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 579 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; |
Anders Carlsson | aa0d25b | 2008-08-23 23:22:21 +0000 | [diff] [blame] | 580 | return; |
| 581 | } |
| 582 | |
Anders Carlsson | aa0d25b | 2008-08-23 23:22:21 +0000 | [diff] [blame] | 583 | |
| 584 | ObjCGCAttr::GCAttrTypes type; |
Chris Lattner | 92e62b0 | 2008-11-20 04:42:34 +0000 | [diff] [blame] | 585 | if (Attr.getParameterName()->isStr("weak")) { |
Fariborz Jahanian | 24b93f2 | 2008-11-20 19:35:51 +0000 | [diff] [blame] | 586 | if (isa<FieldDecl>(d) && !isa<ObjCIvarDecl>(d)) |
Fariborz Jahanian | 2682d8b | 2008-11-20 00:15:42 +0000 | [diff] [blame] | 587 | S.Diag(Attr.getLoc(), diag::warn_attribute_weak_on_field); |
Anders Carlsson | aa0d25b | 2008-08-23 23:22:21 +0000 | [diff] [blame] | 588 | type = ObjCGCAttr::Weak; |
Fariborz Jahanian | 2682d8b | 2008-11-20 00:15:42 +0000 | [diff] [blame] | 589 | } |
Chris Lattner | 92e62b0 | 2008-11-20 04:42:34 +0000 | [diff] [blame] | 590 | else if (Attr.getParameterName()->isStr("strong")) |
Anders Carlsson | aa0d25b | 2008-08-23 23:22:21 +0000 | [diff] [blame] | 591 | type = ObjCGCAttr::Strong; |
| 592 | else { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 593 | S.Diag(Attr.getLoc(), diag::warn_attribute_type_not_supported) |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 594 | << "objc_gc" << Attr.getParameterName(); |
Anders Carlsson | aa0d25b | 2008-08-23 23:22:21 +0000 | [diff] [blame] | 595 | return; |
| 596 | } |
| 597 | |
| 598 | d->addAttr(new ObjCGCAttr(type)); |
| 599 | } |
| 600 | |
Fariborz Jahanian | fa23c1d | 2009-01-13 23:34:40 +0000 | [diff] [blame] | 601 | static void HandleObjCNSObject(Decl *d, const AttributeList &Attr, Sema &S) { |
| 602 | if (Attr.getNumArgs() != 0) { |
| 603 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; |
| 604 | return; |
| 605 | } |
| 606 | if (TypedefDecl *TD = dyn_cast<TypedefDecl>(d)) { |
| 607 | QualType T = TD->getUnderlyingType(); |
| 608 | if (!T->isPointerType() || |
| 609 | !T->getAsPointerType()->getPointeeType()->isRecordType()) { |
| 610 | S.Diag(TD->getLocation(), diag::err_nsobject_attribute); |
| 611 | return; |
| 612 | } |
| 613 | } |
| 614 | d->addAttr(new ObjCNSObjectAttr); |
| 615 | } |
| 616 | |
Douglas Gregor | f9201e0 | 2009-02-11 23:02:49 +0000 | [diff] [blame] | 617 | static void |
| 618 | HandleOverloadableAttr(Decl *D, const AttributeList &Attr, Sema &S) { |
| 619 | if (Attr.getNumArgs() != 0) { |
| 620 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; |
| 621 | return; |
| 622 | } |
| 623 | |
| 624 | if (!isa<FunctionDecl>(D)) { |
| 625 | S.Diag(Attr.getLoc(), diag::err_attribute_overloadable_not_function); |
| 626 | return; |
| 627 | } |
| 628 | |
| 629 | D->addAttr(new OverloadableAttr); |
| 630 | } |
| 631 | |
Steve Naroff | 9eae576 | 2008-09-18 16:44:58 +0000 | [diff] [blame] | 632 | static void HandleBlocksAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
| 633 | if (!Attr.getParameterName()) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 634 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_string) |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 635 | << "blocks" << 1; |
Steve Naroff | 9eae576 | 2008-09-18 16:44:58 +0000 | [diff] [blame] | 636 | return; |
| 637 | } |
| 638 | |
| 639 | if (Attr.getNumArgs() != 0) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 640 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; |
Steve Naroff | 9eae576 | 2008-09-18 16:44:58 +0000 | [diff] [blame] | 641 | return; |
| 642 | } |
Steve Naroff | 9eae576 | 2008-09-18 16:44:58 +0000 | [diff] [blame] | 643 | |
| 644 | BlocksAttr::BlocksAttrTypes type; |
Chris Lattner | 92e62b0 | 2008-11-20 04:42:34 +0000 | [diff] [blame] | 645 | if (Attr.getParameterName()->isStr("byref")) |
Steve Naroff | 9eae576 | 2008-09-18 16:44:58 +0000 | [diff] [blame] | 646 | type = BlocksAttr::ByRef; |
| 647 | else { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 648 | S.Diag(Attr.getLoc(), diag::warn_attribute_type_not_supported) |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 649 | << "blocks" << Attr.getParameterName(); |
Steve Naroff | 9eae576 | 2008-09-18 16:44:58 +0000 | [diff] [blame] | 650 | return; |
| 651 | } |
| 652 | |
| 653 | d->addAttr(new BlocksAttr(type)); |
| 654 | } |
| 655 | |
Anders Carlsson | 7709182 | 2008-10-05 18:05:59 +0000 | [diff] [blame] | 656 | static void HandleSentinelAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
| 657 | // check the attribute arguments. |
| 658 | if (Attr.getNumArgs() > 2) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 659 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) |
| 660 | << "0, 1 or 2"; |
Anders Carlsson | 7709182 | 2008-10-05 18:05:59 +0000 | [diff] [blame] | 661 | return; |
| 662 | } |
| 663 | |
| 664 | int sentinel = 0; |
| 665 | if (Attr.getNumArgs() > 0) { |
| 666 | Expr *E = static_cast<Expr *>(Attr.getArg(0)); |
| 667 | llvm::APSInt Idx(32); |
| 668 | if (!E->isIntegerConstantExpr(Idx, S.Context)) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 669 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_int) |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 670 | << "sentinel" << 1 << E->getSourceRange(); |
Anders Carlsson | 7709182 | 2008-10-05 18:05:59 +0000 | [diff] [blame] | 671 | return; |
| 672 | } |
| 673 | sentinel = Idx.getZExtValue(); |
| 674 | |
| 675 | if (sentinel < 0) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 676 | S.Diag(Attr.getLoc(), diag::err_attribute_sentinel_less_than_zero) |
| 677 | << E->getSourceRange(); |
Anders Carlsson | 7709182 | 2008-10-05 18:05:59 +0000 | [diff] [blame] | 678 | return; |
| 679 | } |
| 680 | } |
| 681 | |
| 682 | int nullPos = 0; |
| 683 | if (Attr.getNumArgs() > 1) { |
| 684 | Expr *E = static_cast<Expr *>(Attr.getArg(1)); |
| 685 | llvm::APSInt Idx(32); |
| 686 | if (!E->isIntegerConstantExpr(Idx, S.Context)) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 687 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_int) |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 688 | << "sentinel" << 2 << E->getSourceRange(); |
Anders Carlsson | 7709182 | 2008-10-05 18:05:59 +0000 | [diff] [blame] | 689 | return; |
| 690 | } |
| 691 | nullPos = Idx.getZExtValue(); |
| 692 | |
| 693 | if (nullPos > 1 || nullPos < 0) { |
| 694 | // FIXME: This error message could be improved, it would be nice |
| 695 | // to say what the bounds actually are. |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 696 | S.Diag(Attr.getLoc(), diag::err_attribute_sentinel_not_zero_or_one) |
| 697 | << E->getSourceRange(); |
Anders Carlsson | 7709182 | 2008-10-05 18:05:59 +0000 | [diff] [blame] | 698 | return; |
| 699 | } |
| 700 | } |
| 701 | |
| 702 | if (FunctionDecl *FD = dyn_cast<FunctionDecl>(d)) { |
| 703 | QualType FT = FD->getType(); |
| 704 | if (!FT->getAsFunctionTypeProto()->isVariadic()) { |
| 705 | S.Diag(Attr.getLoc(), diag::warn_attribute_sentinel_not_variadic); |
| 706 | return; |
| 707 | } |
| 708 | } else if (ObjCMethodDecl *MD = dyn_cast<ObjCMethodDecl>(d)) { |
| 709 | if (!MD->isVariadic()) { |
| 710 | S.Diag(Attr.getLoc(), diag::warn_attribute_sentinel_not_variadic); |
| 711 | return; |
| 712 | } |
| 713 | } else { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 714 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) |
| 715 | << "sentinel" << "function or method"; |
Anders Carlsson | 7709182 | 2008-10-05 18:05:59 +0000 | [diff] [blame] | 716 | return; |
| 717 | } |
| 718 | |
| 719 | // FIXME: Actually create the attribute. |
| 720 | } |
| 721 | |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 722 | static void HandleWeakAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 723 | // check the attribute arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 724 | if (Attr.getNumArgs() != 0) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 725 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 726 | return; |
| 727 | } |
| 728 | |
| 729 | d->addAttr(new WeakAttr()); |
| 730 | } |
| 731 | |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 732 | static void HandleDLLImportAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 733 | // check the attribute arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 734 | if (Attr.getNumArgs() != 0) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 735 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 736 | return; |
| 737 | } |
Anton Korobeynikov | 7b0a52f | 2008-12-23 22:24:07 +0000 | [diff] [blame] | 738 | |
Anton Korobeynikov | 2f40270 | 2008-12-26 00:52:02 +0000 | [diff] [blame] | 739 | // Attribute can be applied only to functions or variables. |
| 740 | if (isa<VarDecl>(d)) { |
| 741 | d->addAttr(new DLLImportAttr()); |
| 742 | return; |
| 743 | } |
| 744 | |
| 745 | FunctionDecl *FD = dyn_cast<FunctionDecl>(d); |
| 746 | if (!FD) { |
| 747 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) |
| 748 | << "dllimport" << "function or variable"; |
| 749 | return; |
| 750 | } |
| 751 | |
| 752 | // Currently, the dllimport attribute is ignored for inlined functions. |
| 753 | // Warning is emitted. |
| 754 | if (FD->isInline()) { |
| 755 | S.Diag(Attr.getLoc(), diag::warn_attribute_ignored) << "dllimport"; |
| 756 | return; |
| 757 | } |
| 758 | |
| 759 | // The attribute is also overridden by a subsequent declaration as dllexport. |
| 760 | // Warning is emitted. |
| 761 | for (AttributeList *nextAttr = Attr.getNext(); nextAttr; |
| 762 | nextAttr = nextAttr->getNext()) { |
| 763 | if (nextAttr->getKind() == AttributeList::AT_dllexport) { |
| 764 | S.Diag(Attr.getLoc(), diag::warn_attribute_ignored) << "dllimport"; |
| 765 | return; |
| 766 | } |
| 767 | } |
| 768 | |
| 769 | if (d->getAttr<DLLExportAttr>()) { |
| 770 | S.Diag(Attr.getLoc(), diag::warn_attribute_ignored) << "dllimport"; |
| 771 | return; |
| 772 | } |
| 773 | |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 774 | d->addAttr(new DLLImportAttr()); |
| 775 | } |
| 776 | |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 777 | static void HandleDLLExportAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 778 | // check the attribute arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 779 | if (Attr.getNumArgs() != 0) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 780 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 781 | return; |
| 782 | } |
Anton Korobeynikov | 7b0a52f | 2008-12-23 22:24:07 +0000 | [diff] [blame] | 783 | |
Anton Korobeynikov | 2f40270 | 2008-12-26 00:52:02 +0000 | [diff] [blame] | 784 | // Attribute can be applied only to functions or variables. |
| 785 | if (isa<VarDecl>(d)) { |
| 786 | d->addAttr(new DLLExportAttr()); |
| 787 | return; |
| 788 | } |
| 789 | |
| 790 | FunctionDecl *FD = dyn_cast<FunctionDecl>(d); |
| 791 | if (!FD) { |
| 792 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) |
| 793 | << "dllexport" << "function or variable"; |
| 794 | return; |
| 795 | } |
| 796 | |
| 797 | // Currently, the dllexport attribute is ignored for inlined functions, |
| 798 | // unless the -fkeep-inline-functions flag has been used. Warning is emitted; |
| 799 | if (FD->isInline()) { |
| 800 | // FIXME: ... unless the -fkeep-inline-functions flag has been used. |
| 801 | S.Diag(Attr.getLoc(), diag::warn_attribute_ignored) << "dllexport"; |
| 802 | return; |
| 803 | } |
| 804 | |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 805 | d->addAttr(new DLLExportAttr()); |
| 806 | } |
| 807 | |
Daniel Dunbar | 17f194f | 2009-02-12 17:28:23 +0000 | [diff] [blame] | 808 | static void HandleSectionAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
| 809 | // Attribute has no arguments. |
| 810 | if (Attr.getNumArgs() != 1) { |
| 811 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; |
| 812 | return; |
| 813 | } |
| 814 | |
| 815 | // Make sure that there is a string literal as the sections's single |
| 816 | // argument. |
| 817 | StringLiteral *SE = |
| 818 | dyn_cast<StringLiteral>(static_cast<Expr *>(Attr.getArg(0))); |
| 819 | if (!SE) { |
| 820 | // FIXME |
| 821 | S.Diag(Attr.getLoc(), diag::err_attribute_annotate_no_string); |
| 822 | return; |
| 823 | } |
| 824 | d->addAttr(new SectionAttr(std::string(SE->getStrData(), |
| 825 | SE->getByteLength()))); |
| 826 | } |
| 827 | |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 828 | static void HandleStdCallAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Anton Korobeynikov | 7b0a52f | 2008-12-23 22:24:07 +0000 | [diff] [blame] | 829 | // Attribute has no arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 830 | if (Attr.getNumArgs() != 0) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 831 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 832 | return; |
| 833 | } |
Anton Korobeynikov | 7b0a52f | 2008-12-23 22:24:07 +0000 | [diff] [blame] | 834 | |
| 835 | // Attribute can be applied only to functions. |
| 836 | if (!isa<FunctionDecl>(d)) { |
| 837 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) |
| 838 | << "stdcall" << "function"; |
| 839 | return; |
| 840 | } |
| 841 | |
| 842 | // stdcall and fastcall attributes are mutually incompatible. |
| 843 | if (d->getAttr<FastCallAttr>()) { |
| 844 | S.Diag(Attr.getLoc(), diag::err_attributes_are_not_compatible) |
| 845 | << "stdcall" << "fastcall"; |
| 846 | return; |
| 847 | } |
| 848 | |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 849 | d->addAttr(new StdCallAttr()); |
| 850 | } |
| 851 | |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 852 | static void HandleFastCallAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Anton Korobeynikov | 7b0a52f | 2008-12-23 22:24:07 +0000 | [diff] [blame] | 853 | // Attribute has no arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 854 | if (Attr.getNumArgs() != 0) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 855 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 856 | return; |
| 857 | } |
Anton Korobeynikov | 7b0a52f | 2008-12-23 22:24:07 +0000 | [diff] [blame] | 858 | |
| 859 | if (!isa<FunctionDecl>(d)) { |
| 860 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) |
| 861 | << "fastcall" << "function"; |
| 862 | return; |
| 863 | } |
| 864 | |
| 865 | // stdcall and fastcall attributes are mutually incompatible. |
| 866 | if (d->getAttr<StdCallAttr>()) { |
| 867 | S.Diag(Attr.getLoc(), diag::err_attributes_are_not_compatible) |
| 868 | << "fastcall" << "stdcall"; |
| 869 | return; |
| 870 | } |
| 871 | |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 872 | d->addAttr(new FastCallAttr()); |
| 873 | } |
| 874 | |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 875 | static void HandleNothrowAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 876 | // check the attribute arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 877 | if (Attr.getNumArgs() != 0) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 878 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 879 | return; |
| 880 | } |
| 881 | |
| 882 | d->addAttr(new NoThrowAttr()); |
| 883 | } |
| 884 | |
Anders Carlsson | 232eb7d | 2008-10-05 23:32:53 +0000 | [diff] [blame] | 885 | static void HandleConstAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
| 886 | // check the attribute arguments. |
| 887 | if (Attr.getNumArgs() != 0) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 888 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
Anders Carlsson | 232eb7d | 2008-10-05 23:32:53 +0000 | [diff] [blame] | 889 | return; |
| 890 | } |
| 891 | |
| 892 | d->addAttr(new ConstAttr()); |
| 893 | } |
| 894 | |
| 895 | static void HandlePureAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
| 896 | // check the attribute arguments. |
| 897 | if (Attr.getNumArgs() != 0) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 898 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
Anders Carlsson | 232eb7d | 2008-10-05 23:32:53 +0000 | [diff] [blame] | 899 | return; |
| 900 | } |
| 901 | |
| 902 | d->addAttr(new PureAttr()); |
| 903 | } |
| 904 | |
Anders Carlsson | f6e35d0 | 2009-01-31 01:16:18 +0000 | [diff] [blame] | 905 | static void HandleCleanupAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Anders Carlsson | 89941c1 | 2009-02-07 23:16:50 +0000 | [diff] [blame] | 906 | // Match gcc which ignores cleanup attrs when compiling C++. |
| 907 | if (S.getLangOptions().CPlusPlus) |
| 908 | return; |
| 909 | |
Anders Carlsson | f6e35d0 | 2009-01-31 01:16:18 +0000 | [diff] [blame] | 910 | if (!Attr.getParameterName()) { |
| 911 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; |
| 912 | return; |
| 913 | } |
| 914 | |
| 915 | if (Attr.getNumArgs() != 0) { |
| 916 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; |
| 917 | return; |
| 918 | } |
| 919 | |
| 920 | VarDecl *VD = dyn_cast<VarDecl>(d); |
| 921 | |
| 922 | if (!VD || !VD->hasLocalStorage()) { |
| 923 | S.Diag(Attr.getLoc(), diag::warn_attribute_ignored) << "cleanup"; |
| 924 | return; |
| 925 | } |
| 926 | |
| 927 | // Look up the function |
Douglas Gregor | 47b9a1c | 2009-02-04 17:27:36 +0000 | [diff] [blame] | 928 | NamedDecl *CleanupDecl = S.LookupName(S.TUScope, Attr.getParameterName(), |
| 929 | Sema::LookupOrdinaryName); |
Anders Carlsson | f6e35d0 | 2009-01-31 01:16:18 +0000 | [diff] [blame] | 930 | if (!CleanupDecl) { |
Anders Carlsson | 89941c1 | 2009-02-07 23:16:50 +0000 | [diff] [blame] | 931 | S.Diag(Attr.getLoc(), diag::err_attribute_cleanup_arg_not_found) << |
Anders Carlsson | f6e35d0 | 2009-01-31 01:16:18 +0000 | [diff] [blame] | 932 | Attr.getParameterName(); |
| 933 | return; |
| 934 | } |
| 935 | |
| 936 | FunctionDecl *FD = dyn_cast<FunctionDecl>(CleanupDecl); |
| 937 | if (!FD) { |
Anders Carlsson | 89941c1 | 2009-02-07 23:16:50 +0000 | [diff] [blame] | 938 | S.Diag(Attr.getLoc(), diag::err_attribute_cleanup_arg_not_function) << |
Anders Carlsson | f6e35d0 | 2009-01-31 01:16:18 +0000 | [diff] [blame] | 939 | Attr.getParameterName(); |
| 940 | return; |
| 941 | } |
| 942 | |
Anders Carlsson | f6e35d0 | 2009-01-31 01:16:18 +0000 | [diff] [blame] | 943 | if (FD->getNumParams() != 1) { |
Anders Carlsson | 89941c1 | 2009-02-07 23:16:50 +0000 | [diff] [blame] | 944 | S.Diag(Attr.getLoc(), diag::err_attribute_cleanup_func_must_take_one_arg) << |
Anders Carlsson | f6e35d0 | 2009-01-31 01:16:18 +0000 | [diff] [blame] | 945 | Attr.getParameterName(); |
| 946 | return; |
| 947 | } |
| 948 | |
Anders Carlsson | 89941c1 | 2009-02-07 23:16:50 +0000 | [diff] [blame] | 949 | // We're currently more strict than GCC about what function types we accept. |
| 950 | // If this ever proves to be a problem it should be easy to fix. |
| 951 | QualType Ty = S.Context.getPointerType(VD->getType()); |
| 952 | QualType ParamTy = FD->getParamDecl(0)->getType(); |
| 953 | if (Ty != ParamTy) { |
| 954 | S.Diag(Attr.getLoc(), |
| 955 | diag::err_attribute_cleanup_func_arg_incompatible_type) << |
| 956 | Attr.getParameterName() << ParamTy << Ty; |
| 957 | return; |
| 958 | } |
| 959 | |
Anders Carlsson | f6e35d0 | 2009-01-31 01:16:18 +0000 | [diff] [blame] | 960 | d->addAttr(new CleanupAttr(FD)); |
| 961 | } |
| 962 | |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 963 | /// Handle __attribute__((format(type,idx,firstarg))) attributes |
| 964 | /// based on http://gcc.gnu.org/onlinedocs/gcc/Function-Attributes.html |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 965 | static void HandleFormatAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 966 | |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 967 | if (!Attr.getParameterName()) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 968 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_string) |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 969 | << "format" << 1; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 970 | return; |
| 971 | } |
| 972 | |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 973 | if (Attr.getNumArgs() != 2) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 974 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 3; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 975 | return; |
| 976 | } |
| 977 | |
Daniel Dunbar | d3f2c10 | 2008-10-19 02:04:16 +0000 | [diff] [blame] | 978 | if (!isFunctionOrMethod(d) || !hasFunctionProto(d)) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 979 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) |
| 980 | << "format" << "function"; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 981 | return; |
| 982 | } |
| 983 | |
| 984 | // FIXME: in C++ the implicit 'this' function parameter also counts. |
| 985 | // this is needed in order to be compatible with GCC |
| 986 | // the index must start in 1 and the limit is numargs+1 |
Daniel Dunbar | 3568249 | 2008-09-26 04:12:28 +0000 | [diff] [blame] | 987 | unsigned NumArgs = getFunctionOrMethodNumArgs(d); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 988 | unsigned FirstIdx = 1; |
| 989 | |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 990 | const char *Format = Attr.getParameterName()->getName(); |
| 991 | unsigned FormatLen = Attr.getParameterName()->getLength(); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 992 | |
| 993 | // Normalize the argument, __foo__ becomes foo. |
| 994 | if (FormatLen > 4 && Format[0] == '_' && Format[1] == '_' && |
| 995 | Format[FormatLen - 2] == '_' && Format[FormatLen - 1] == '_') { |
| 996 | Format += 2; |
| 997 | FormatLen -= 4; |
| 998 | } |
| 999 | |
| 1000 | bool Supported = false; |
| 1001 | bool is_NSString = false; |
| 1002 | bool is_strftime = false; |
Daniel Dunbar | 085e8f7 | 2008-09-26 03:32:58 +0000 | [diff] [blame] | 1003 | bool is_CFString = false; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1004 | |
| 1005 | switch (FormatLen) { |
| 1006 | default: break; |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 1007 | case 5: Supported = !memcmp(Format, "scanf", 5); break; |
| 1008 | case 6: Supported = !memcmp(Format, "printf", 6); break; |
| 1009 | case 7: Supported = !memcmp(Format, "strfmon", 7); break; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1010 | case 8: |
Daniel Dunbar | 085e8f7 | 2008-09-26 03:32:58 +0000 | [diff] [blame] | 1011 | Supported = (is_strftime = !memcmp(Format, "strftime", 8)) || |
| 1012 | (is_NSString = !memcmp(Format, "NSString", 8)) || |
| 1013 | (is_CFString = !memcmp(Format, "CFString", 8)); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1014 | break; |
| 1015 | } |
| 1016 | |
| 1017 | if (!Supported) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 1018 | S.Diag(Attr.getLoc(), diag::warn_attribute_type_not_supported) |
| 1019 | << "format" << Attr.getParameterName()->getName(); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1020 | return; |
| 1021 | } |
| 1022 | |
| 1023 | // checks for the 2nd argument |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 1024 | Expr *IdxExpr = static_cast<Expr *>(Attr.getArg(0)); |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 1025 | llvm::APSInt Idx(32); |
| 1026 | if (!IdxExpr->isIntegerConstantExpr(Idx, S.Context)) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 1027 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_int) |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 1028 | << "format" << 2 << IdxExpr->getSourceRange(); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1029 | return; |
| 1030 | } |
| 1031 | |
| 1032 | if (Idx.getZExtValue() < FirstIdx || Idx.getZExtValue() > NumArgs) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 1033 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_out_of_bounds) |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 1034 | << "format" << 2 << IdxExpr->getSourceRange(); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1035 | return; |
| 1036 | } |
| 1037 | |
| 1038 | // FIXME: Do we need to bounds check? |
| 1039 | unsigned ArgIdx = Idx.getZExtValue() - 1; |
| 1040 | |
| 1041 | // make sure the format string is really a string |
Daniel Dunbar | 3568249 | 2008-09-26 04:12:28 +0000 | [diff] [blame] | 1042 | QualType Ty = getFunctionOrMethodArgType(d, ArgIdx); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1043 | |
Daniel Dunbar | 085e8f7 | 2008-09-26 03:32:58 +0000 | [diff] [blame] | 1044 | if (is_CFString) { |
| 1045 | if (!isCFStringType(Ty, S.Context)) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 1046 | S.Diag(Attr.getLoc(), diag::err_format_attribute_not) |
| 1047 | << "a CFString" << IdxExpr->getSourceRange(); |
Daniel Dunbar | 085e8f7 | 2008-09-26 03:32:58 +0000 | [diff] [blame] | 1048 | return; |
| 1049 | } |
| 1050 | } else if (is_NSString) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1051 | // FIXME: do we need to check if the type is NSString*? What are |
| 1052 | // the semantics? |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 1053 | if (!isNSStringType(Ty, S.Context)) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1054 | // FIXME: Should highlight the actual expression that has the |
| 1055 | // wrong type. |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 1056 | S.Diag(Attr.getLoc(), diag::err_format_attribute_not) |
| 1057 | << "an NSString" << IdxExpr->getSourceRange(); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1058 | return; |
| 1059 | } |
| 1060 | } else if (!Ty->isPointerType() || |
| 1061 | !Ty->getAsPointerType()->getPointeeType()->isCharType()) { |
| 1062 | // FIXME: Should highlight the actual expression that has the |
| 1063 | // wrong type. |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 1064 | S.Diag(Attr.getLoc(), diag::err_format_attribute_not) |
| 1065 | << "a string type" << IdxExpr->getSourceRange(); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1066 | return; |
| 1067 | } |
| 1068 | |
| 1069 | // check the 3rd argument |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 1070 | Expr *FirstArgExpr = static_cast<Expr *>(Attr.getArg(1)); |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 1071 | llvm::APSInt FirstArg(32); |
| 1072 | if (!FirstArgExpr->isIntegerConstantExpr(FirstArg, S.Context)) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 1073 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_int) |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 1074 | << "format" << 3 << FirstArgExpr->getSourceRange(); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1075 | return; |
| 1076 | } |
| 1077 | |
| 1078 | // check if the function is variadic if the 3rd argument non-zero |
| 1079 | if (FirstArg != 0) { |
Daniel Dunbar | 3568249 | 2008-09-26 04:12:28 +0000 | [diff] [blame] | 1080 | if (isFunctionOrMethodVariadic(d)) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1081 | ++NumArgs; // +1 for ... |
| 1082 | } else { |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 1083 | S.Diag(d->getLocation(), diag::err_format_attribute_requires_variadic); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1084 | return; |
| 1085 | } |
| 1086 | } |
| 1087 | |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 1088 | // strftime requires FirstArg to be 0 because it doesn't read from any |
| 1089 | // variable the input is just the current time + the format string. |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1090 | if (is_strftime) { |
| 1091 | if (FirstArg != 0) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 1092 | S.Diag(Attr.getLoc(), diag::err_format_strftime_third_parameter) |
| 1093 | << FirstArgExpr->getSourceRange(); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1094 | return; |
| 1095 | } |
| 1096 | // if 0 it disables parameter checking (to use with e.g. va_list) |
| 1097 | } else if (FirstArg != 0 && FirstArg != NumArgs) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 1098 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_out_of_bounds) |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 1099 | << "format" << 3 << FirstArgExpr->getSourceRange(); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1100 | return; |
| 1101 | } |
| 1102 | |
| 1103 | d->addAttr(new FormatAttr(std::string(Format, FormatLen), |
| 1104 | Idx.getZExtValue(), FirstArg.getZExtValue())); |
| 1105 | } |
| 1106 | |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 1107 | static void HandleTransparentUnionAttr(Decl *d, const AttributeList &Attr, |
| 1108 | Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1109 | // check the attribute arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 1110 | if (Attr.getNumArgs() != 0) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 1111 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1112 | return; |
| 1113 | } |
| 1114 | |
Eli Friedman | bc88745 | 2008-09-02 05:19:23 +0000 | [diff] [blame] | 1115 | // FIXME: This shouldn't be restricted to typedefs |
| 1116 | TypedefDecl *TD = dyn_cast<TypedefDecl>(d); |
| 1117 | if (!TD || !TD->getUnderlyingType()->isUnionType()) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 1118 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) |
| 1119 | << "transparent_union" << "union"; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1120 | return; |
| 1121 | } |
| 1122 | |
Eli Friedman | bc88745 | 2008-09-02 05:19:23 +0000 | [diff] [blame] | 1123 | RecordDecl* RD = TD->getUnderlyingType()->getAsUnionType()->getDecl(); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1124 | |
Eli Friedman | bc88745 | 2008-09-02 05:19:23 +0000 | [diff] [blame] | 1125 | // FIXME: Should we do a check for RD->isDefinition()? |
| 1126 | |
| 1127 | // FIXME: This isn't supposed to be restricted to pointers, but otherwise |
| 1128 | // we might silently generate incorrect code; see following code |
Douglas Gregor | 44b4321 | 2008-12-11 16:49:14 +0000 | [diff] [blame] | 1129 | for (RecordDecl::field_iterator Field = RD->field_begin(), |
| 1130 | FieldEnd = RD->field_end(); |
| 1131 | Field != FieldEnd; ++Field) { |
| 1132 | if (!Field->getType()->isPointerType()) { |
Eli Friedman | bc88745 | 2008-09-02 05:19:23 +0000 | [diff] [blame] | 1133 | S.Diag(Attr.getLoc(), diag::warn_transparent_union_nonpointer); |
| 1134 | return; |
| 1135 | } |
| 1136 | } |
| 1137 | |
| 1138 | // FIXME: This is a complete hack; we should be properly propagating |
| 1139 | // transparent_union through Sema. That said, this is close enough to |
| 1140 | // correctly compile all the common cases of transparent_union without |
| 1141 | // errors or warnings |
| 1142 | QualType NewTy = S.Context.VoidPtrTy; |
| 1143 | NewTy.addConst(); |
| 1144 | TD->setUnderlyingType(NewTy); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1145 | } |
| 1146 | |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 1147 | static void HandleAnnotateAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1148 | // check the attribute arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 1149 | if (Attr.getNumArgs() != 1) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 1150 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1151 | return; |
| 1152 | } |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 1153 | Expr *argExpr = static_cast<Expr *>(Attr.getArg(0)); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1154 | StringLiteral *SE = dyn_cast<StringLiteral>(argExpr); |
| 1155 | |
| 1156 | // Make sure that there is a string literal as the annotation's single |
| 1157 | // argument. |
| 1158 | if (!SE) { |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 1159 | S.Diag(Attr.getLoc(), diag::err_attribute_annotate_no_string); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1160 | return; |
| 1161 | } |
| 1162 | d->addAttr(new AnnotateAttr(std::string(SE->getStrData(), |
| 1163 | SE->getByteLength()))); |
| 1164 | } |
| 1165 | |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 1166 | static void HandleAlignedAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1167 | // check the attribute arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 1168 | if (Attr.getNumArgs() > 1) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 1169 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1170 | return; |
| 1171 | } |
| 1172 | |
| 1173 | unsigned Align = 0; |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 1174 | if (Attr.getNumArgs() == 0) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1175 | // FIXME: This should be the target specific maximum alignment. |
| 1176 | // (For now we just use 128 bits which is the maximum on X86. |
| 1177 | Align = 128; |
| 1178 | return; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1179 | } |
Chris Lattner | 49e2d34 | 2008-06-28 23:50:44 +0000 | [diff] [blame] | 1180 | |
| 1181 | Expr *alignmentExpr = static_cast<Expr *>(Attr.getArg(0)); |
| 1182 | llvm::APSInt Alignment(32); |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 1183 | if (!alignmentExpr->isIntegerConstantExpr(Alignment, S.Context)) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 1184 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_not_int) |
| 1185 | << "aligned" << alignmentExpr->getSourceRange(); |
Chris Lattner | 49e2d34 | 2008-06-28 23:50:44 +0000 | [diff] [blame] | 1186 | return; |
| 1187 | } |
| 1188 | d->addAttr(new AlignedAttr(Alignment.getZExtValue() * 8)); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1189 | } |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1190 | |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 1191 | /// HandleModeAttr - This attribute modifies the width of a decl with |
Chris Lattner | 065c5a8 | 2008-06-28 23:48:25 +0000 | [diff] [blame] | 1192 | /// primitive type. |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1193 | /// |
| 1194 | /// Despite what would be logical, the mode attribute is a decl attribute, |
| 1195 | /// not a type attribute: 'int ** __attribute((mode(HI))) *G;' tries to make |
| 1196 | /// 'G' be HImode, not an intermediate pointer. |
| 1197 | /// |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 1198 | static void HandleModeAttr(Decl *D, const AttributeList &Attr, Sema &S) { |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1199 | // This attribute isn't documented, but glibc uses it. It changes |
| 1200 | // the width of an int or unsigned int to the specified size. |
| 1201 | |
| 1202 | // Check that there aren't any arguments |
| 1203 | if (Attr.getNumArgs() != 0) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 1204 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1205 | return; |
| 1206 | } |
| 1207 | |
| 1208 | IdentifierInfo *Name = Attr.getParameterName(); |
| 1209 | if (!Name) { |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 1210 | S.Diag(Attr.getLoc(), diag::err_attribute_missing_parameter_name); |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1211 | return; |
| 1212 | } |
| 1213 | const char *Str = Name->getName(); |
| 1214 | unsigned Len = Name->getLength(); |
| 1215 | |
| 1216 | // Normalize the attribute name, __foo__ becomes foo. |
| 1217 | if (Len > 4 && Str[0] == '_' && Str[1] == '_' && |
| 1218 | Str[Len - 2] == '_' && Str[Len - 1] == '_') { |
| 1219 | Str += 2; |
| 1220 | Len -= 4; |
| 1221 | } |
| 1222 | |
| 1223 | unsigned DestWidth = 0; |
| 1224 | bool IntegerMode = true; |
| 1225 | switch (Len) { |
| 1226 | case 2: |
| 1227 | if (!memcmp(Str, "QI", 2)) { DestWidth = 8; break; } |
| 1228 | if (!memcmp(Str, "HI", 2)) { DestWidth = 16; break; } |
| 1229 | if (!memcmp(Str, "SI", 2)) { DestWidth = 32; break; } |
| 1230 | if (!memcmp(Str, "DI", 2)) { DestWidth = 64; break; } |
| 1231 | if (!memcmp(Str, "TI", 2)) { DestWidth = 128; break; } |
| 1232 | if (!memcmp(Str, "SF", 2)) { DestWidth = 32; IntegerMode = false; break; } |
| 1233 | if (!memcmp(Str, "DF", 2)) { DestWidth = 64; IntegerMode = false; break; } |
| 1234 | if (!memcmp(Str, "XF", 2)) { DestWidth = 96; IntegerMode = false; break; } |
| 1235 | if (!memcmp(Str, "TF", 2)) { DestWidth = 128; IntegerMode = false; break; } |
| 1236 | break; |
| 1237 | case 4: |
| 1238 | // FIXME: glibc uses 'word' to define register_t; this is narrower than a |
| 1239 | // pointer on PIC16 and other embedded platforms. |
| 1240 | if (!memcmp(Str, "word", 4)) |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 1241 | DestWidth = S.Context.Target.getPointerWidth(0); |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1242 | if (!memcmp(Str, "byte", 4)) |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 1243 | DestWidth = S.Context.Target.getCharWidth(); |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1244 | break; |
| 1245 | case 7: |
| 1246 | if (!memcmp(Str, "pointer", 7)) |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 1247 | DestWidth = S.Context.Target.getPointerWidth(0); |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1248 | break; |
| 1249 | } |
| 1250 | |
| 1251 | QualType OldTy; |
| 1252 | if (TypedefDecl *TD = dyn_cast<TypedefDecl>(D)) |
| 1253 | OldTy = TD->getUnderlyingType(); |
| 1254 | else if (ValueDecl *VD = dyn_cast<ValueDecl>(D)) |
| 1255 | OldTy = VD->getType(); |
| 1256 | else { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 1257 | S.Diag(D->getLocation(), diag::err_attr_wrong_decl) |
| 1258 | << "mode" << SourceRange(Attr.getLoc(), Attr.getLoc()); |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1259 | return; |
| 1260 | } |
| 1261 | |
Eli Friedman | f98aba3 | 2009-02-13 02:31:07 +0000 | [diff] [blame] | 1262 | // FIXME: Sync this with InitializePredefinedMacros; we need to match |
| 1263 | // int8_t and friends, at least with glibc. |
| 1264 | // FIXME: Make sure 32/64-bit integers don't get defined to types of |
| 1265 | // the wrong width on unusual platforms. |
| 1266 | // FIXME: Make sure floating-point mappings are accurate |
| 1267 | // FIXME: Support XF and TF types |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1268 | QualType NewTy; |
| 1269 | switch (DestWidth) { |
| 1270 | case 0: |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 1271 | S.Diag(Attr.getLoc(), diag::err_unknown_machine_mode) << Name; |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1272 | return; |
| 1273 | default: |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 1274 | S.Diag(Attr.getLoc(), diag::err_unsupported_machine_mode) << Name; |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1275 | return; |
| 1276 | case 8: |
| 1277 | assert(IntegerMode); |
| 1278 | if (OldTy->isSignedIntegerType()) |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 1279 | NewTy = S.Context.SignedCharTy; |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1280 | else |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 1281 | NewTy = S.Context.UnsignedCharTy; |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1282 | break; |
| 1283 | case 16: |
| 1284 | assert(IntegerMode); |
| 1285 | if (OldTy->isSignedIntegerType()) |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 1286 | NewTy = S.Context.ShortTy; |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1287 | else |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 1288 | NewTy = S.Context.UnsignedShortTy; |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1289 | break; |
| 1290 | case 32: |
| 1291 | if (!IntegerMode) |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 1292 | NewTy = S.Context.FloatTy; |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1293 | else if (OldTy->isSignedIntegerType()) |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 1294 | NewTy = S.Context.IntTy; |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1295 | else |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 1296 | NewTy = S.Context.UnsignedIntTy; |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1297 | break; |
| 1298 | case 64: |
| 1299 | if (!IntegerMode) |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 1300 | NewTy = S.Context.DoubleTy; |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1301 | else if (OldTy->isSignedIntegerType()) |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 1302 | NewTy = S.Context.LongLongTy; |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1303 | else |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 1304 | NewTy = S.Context.UnsignedLongLongTy; |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1305 | break; |
Eli Friedman | f98aba3 | 2009-02-13 02:31:07 +0000 | [diff] [blame] | 1306 | case 128: |
| 1307 | if (!IntegerMode) { |
| 1308 | S.Diag(Attr.getLoc(), diag::err_unsupported_machine_mode) << Name; |
| 1309 | return; |
| 1310 | } |
| 1311 | NewTy = S.Context.getFixedWidthIntType(128, OldTy->isSignedIntegerType()); |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1312 | } |
| 1313 | |
| 1314 | if (!OldTy->getAsBuiltinType()) |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 1315 | S.Diag(Attr.getLoc(), diag::err_mode_not_primitive); |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1316 | else if (!(IntegerMode && OldTy->isIntegerType()) && |
| 1317 | !(!IntegerMode && OldTy->isFloatingType())) { |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 1318 | S.Diag(Attr.getLoc(), diag::err_mode_wrong_type); |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1319 | } |
| 1320 | |
| 1321 | // Install the new type. |
| 1322 | if (TypedefDecl *TD = dyn_cast<TypedefDecl>(D)) |
| 1323 | TD->setUnderlyingType(NewTy); |
| 1324 | else |
| 1325 | cast<ValueDecl>(D)->setType(NewTy); |
| 1326 | } |
Chris Lattner | 0744e5f | 2008-06-29 00:23:49 +0000 | [diff] [blame] | 1327 | |
Anders Carlsson | d87df37 | 2009-02-13 06:46:13 +0000 | [diff] [blame] | 1328 | static void HandleNodebugAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
| 1329 | // check the attribute arguments. |
| 1330 | if (Attr.getNumArgs() > 0) { |
| 1331 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
| 1332 | return; |
| 1333 | } |
Anders Carlsson | e896d98 | 2009-02-13 08:11:52 +0000 | [diff] [blame] | 1334 | |
| 1335 | if (!isa<FunctionDecl>(d)) { |
Anders Carlsson | d87df37 | 2009-02-13 06:46:13 +0000 | [diff] [blame] | 1336 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) |
| 1337 | << "nodebug" << "function"; |
| 1338 | return; |
| 1339 | } |
| 1340 | |
| 1341 | d->addAttr(new NodebugAttr()); |
| 1342 | } |
| 1343 | |
Chris Lattner | 0744e5f | 2008-06-29 00:23:49 +0000 | [diff] [blame] | 1344 | //===----------------------------------------------------------------------===// |
| 1345 | // Top Level Sema Entry Points |
| 1346 | //===----------------------------------------------------------------------===// |
| 1347 | |
Sebastian Redl | a89d82c | 2008-12-21 19:24:58 +0000 | [diff] [blame] | 1348 | /// ProcessDeclAttribute - Apply the specific attribute to the specified decl if |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 1349 | /// the attribute applies to decls. If the attribute is a type attribute, just |
| 1350 | /// silently ignore it. |
| 1351 | static void ProcessDeclAttribute(Decl *D, const AttributeList &Attr, Sema &S) { |
| 1352 | switch (Attr.getKind()) { |
Daniel Dunbar | 3068ae0 | 2008-07-31 22:40:48 +0000 | [diff] [blame] | 1353 | case AttributeList::AT_IBOutlet: HandleIBOutletAttr (D, Attr, S); break; |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 1354 | case AttributeList::AT_address_space: |
| 1355 | // Ignore this, this is a type attribute, handled by ProcessTypeAttributes. |
| 1356 | break; |
Daniel Dunbar | 3068ae0 | 2008-07-31 22:40:48 +0000 | [diff] [blame] | 1357 | case AttributeList::AT_alias: HandleAliasAttr (D, Attr, S); break; |
| 1358 | case AttributeList::AT_aligned: HandleAlignedAttr (D, Attr, S); break; |
Daniel Dunbar | af668b0 | 2008-10-28 00:17:57 +0000 | [diff] [blame] | 1359 | case AttributeList::AT_always_inline: |
| 1360 | HandleAlwaysInlineAttr (D, Attr, S); break; |
Daniel Dunbar | 3068ae0 | 2008-07-31 22:40:48 +0000 | [diff] [blame] | 1361 | case AttributeList::AT_annotate: HandleAnnotateAttr (D, Attr, S); break; |
| 1362 | case AttributeList::AT_constructor: HandleConstructorAttr(D, Attr, S); break; |
| 1363 | case AttributeList::AT_deprecated: HandleDeprecatedAttr(D, Attr, S); break; |
| 1364 | case AttributeList::AT_destructor: HandleDestructorAttr(D, Attr, S); break; |
| 1365 | case AttributeList::AT_dllexport: HandleDLLExportAttr (D, Attr, S); break; |
| 1366 | case AttributeList::AT_dllimport: HandleDLLImportAttr (D, Attr, S); break; |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 1367 | case AttributeList::AT_ext_vector_type: |
| 1368 | HandleExtVectorTypeAttr(D, Attr, S); |
| 1369 | break; |
Daniel Dunbar | 3068ae0 | 2008-07-31 22:40:48 +0000 | [diff] [blame] | 1370 | case AttributeList::AT_fastcall: HandleFastCallAttr (D, Attr, S); break; |
| 1371 | case AttributeList::AT_format: HandleFormatAttr (D, Attr, S); break; |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 1372 | case AttributeList::AT_mode: HandleModeAttr (D, Attr, S); break; |
Daniel Dunbar | 3068ae0 | 2008-07-31 22:40:48 +0000 | [diff] [blame] | 1373 | case AttributeList::AT_nonnull: HandleNonNullAttr (D, Attr, S); break; |
| 1374 | case AttributeList::AT_noreturn: HandleNoReturnAttr (D, Attr, S); break; |
| 1375 | case AttributeList::AT_nothrow: HandleNothrowAttr (D, Attr, S); break; |
| 1376 | case AttributeList::AT_packed: HandlePackedAttr (D, Attr, S); break; |
Daniel Dunbar | 17f194f | 2009-02-12 17:28:23 +0000 | [diff] [blame] | 1377 | case AttributeList::AT_section: HandleSectionAttr (D, Attr, S); break; |
Daniel Dunbar | 3068ae0 | 2008-07-31 22:40:48 +0000 | [diff] [blame] | 1378 | case AttributeList::AT_stdcall: HandleStdCallAttr (D, Attr, S); break; |
Fariborz Jahanian | bc1c877 | 2008-12-17 01:07:27 +0000 | [diff] [blame] | 1379 | case AttributeList::AT_unavailable: HandleUnavailableAttr(D, Attr, S); break; |
Daniel Dunbar | 3068ae0 | 2008-07-31 22:40:48 +0000 | [diff] [blame] | 1380 | case AttributeList::AT_unused: HandleUnusedAttr (D, Attr, S); break; |
Daniel Dunbar | b805dad | 2009-02-13 19:23:53 +0000 | [diff] [blame^] | 1381 | case AttributeList::AT_used: HandleUsedAttr (D, Attr, S); break; |
Daniel Dunbar | 3068ae0 | 2008-07-31 22:40:48 +0000 | [diff] [blame] | 1382 | case AttributeList::AT_vector_size: HandleVectorSizeAttr(D, Attr, S); break; |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 1383 | case AttributeList::AT_visibility: HandleVisibilityAttr(D, Attr, S); break; |
| 1384 | case AttributeList::AT_weak: HandleWeakAttr (D, Attr, S); break; |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 1385 | case AttributeList::AT_transparent_union: |
| 1386 | HandleTransparentUnionAttr(D, Attr, S); |
| 1387 | break; |
Anders Carlsson | aa0d25b | 2008-08-23 23:22:21 +0000 | [diff] [blame] | 1388 | case AttributeList::AT_objc_gc: HandleObjCGCAttr (D, Attr, S); break; |
Douglas Gregor | f9201e0 | 2009-02-11 23:02:49 +0000 | [diff] [blame] | 1389 | case AttributeList::AT_overloadable:HandleOverloadableAttr(D, Attr, S); break; |
Fariborz Jahanian | fa23c1d | 2009-01-13 23:34:40 +0000 | [diff] [blame] | 1390 | case AttributeList::AT_nsobject: HandleObjCNSObject (D, Attr, S); break; |
Steve Naroff | 9eae576 | 2008-09-18 16:44:58 +0000 | [diff] [blame] | 1391 | case AttributeList::AT_blocks: HandleBlocksAttr (D, Attr, S); break; |
Anders Carlsson | 7709182 | 2008-10-05 18:05:59 +0000 | [diff] [blame] | 1392 | case AttributeList::AT_sentinel: HandleSentinelAttr (D, Attr, S); break; |
Anders Carlsson | 232eb7d | 2008-10-05 23:32:53 +0000 | [diff] [blame] | 1393 | case AttributeList::AT_const: HandleConstAttr (D, Attr, S); break; |
| 1394 | case AttributeList::AT_pure: HandlePureAttr (D, Attr, S); break; |
Anders Carlsson | f6e35d0 | 2009-01-31 01:16:18 +0000 | [diff] [blame] | 1395 | case AttributeList::AT_cleanup: HandleCleanupAttr (D, Attr, S); break; |
Anders Carlsson | d87df37 | 2009-02-13 06:46:13 +0000 | [diff] [blame] | 1396 | case AttributeList::AT_nodebug: HandleNodebugAttr (D, Attr, S); break; |
Anders Carlsson | 05f8e47 | 2009-02-13 08:16:43 +0000 | [diff] [blame] | 1397 | case AttributeList::IgnoredAttribute: |
| 1398 | // Just ignore |
| 1399 | break; |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 1400 | default: |
Anders Carlsson | d87df37 | 2009-02-13 06:46:13 +0000 | [diff] [blame] | 1401 | S.Diag(Attr.getLoc(), diag::warn_attribute_ignored) << Attr.getName(); |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 1402 | break; |
| 1403 | } |
| 1404 | } |
| 1405 | |
| 1406 | /// ProcessDeclAttributeList - Apply all the decl attributes in the specified |
| 1407 | /// attribute list to the specified decl, ignoring any type attributes. |
| 1408 | void Sema::ProcessDeclAttributeList(Decl *D, const AttributeList *AttrList) { |
| 1409 | while (AttrList) { |
| 1410 | ProcessDeclAttribute(D, *AttrList, *this); |
| 1411 | AttrList = AttrList->getNext(); |
| 1412 | } |
| 1413 | } |
| 1414 | |
| 1415 | |
Chris Lattner | 0744e5f | 2008-06-29 00:23:49 +0000 | [diff] [blame] | 1416 | /// ProcessDeclAttributes - Given a declarator (PD) with attributes indicated in |
| 1417 | /// it, apply them to D. This is a bit tricky because PD can have attributes |
| 1418 | /// specified in many different places, and we need to find and apply them all. |
| 1419 | void Sema::ProcessDeclAttributes(Decl *D, const Declarator &PD) { |
| 1420 | // Apply decl attributes from the DeclSpec if present. |
| 1421 | if (const AttributeList *Attrs = PD.getDeclSpec().getAttributes()) |
| 1422 | ProcessDeclAttributeList(D, Attrs); |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 1423 | |
Chris Lattner | 0744e5f | 2008-06-29 00:23:49 +0000 | [diff] [blame] | 1424 | // Walk the declarator structure, applying decl attributes that were in a type |
| 1425 | // position to the decl itself. This handles cases like: |
| 1426 | // int *__attr__(x)** D; |
| 1427 | // when X is a decl attribute. |
| 1428 | for (unsigned i = 0, e = PD.getNumTypeObjects(); i != e; ++i) |
| 1429 | if (const AttributeList *Attrs = PD.getTypeObject(i).getAttrs()) |
| 1430 | ProcessDeclAttributeList(D, Attrs); |
| 1431 | |
| 1432 | // Finally, apply any attributes on the decl itself. |
| 1433 | if (const AttributeList *Attrs = PD.getAttributes()) |
| 1434 | ProcessDeclAttributeList(D, Attrs); |
| 1435 | } |
| 1436 | |