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" |
Daniel Dunbar | e4858a6 | 2008-08-11 03:45:03 +0000 | [diff] [blame] | 18 | #include "clang/Basic/Diagnostic.h" |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 19 | #include "clang/Basic/TargetInfo.h" |
Daniel Dunbar | 12bc692 | 2008-08-11 03:27:53 +0000 | [diff] [blame] | 20 | #include "clang/Parse/DeclSpec.h" |
Ted Kremenek | 6e1eb87 | 2008-07-22 16:56:21 +0000 | [diff] [blame] | 21 | #include <llvm/ADT/StringExtras.h> |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 22 | using namespace clang; |
| 23 | |
Chris Lattner | e5c5ee1 | 2008-06-29 00:16:31 +0000 | [diff] [blame] | 24 | //===----------------------------------------------------------------------===// |
| 25 | // Helper functions |
| 26 | //===----------------------------------------------------------------------===// |
| 27 | |
Daniel Dunbar | d3f2c10 | 2008-10-19 02:04:16 +0000 | [diff] [blame] | 28 | static const FunctionType *getFunctionType(Decl *d) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 29 | QualType Ty; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 30 | if (ValueDecl *decl = dyn_cast<ValueDecl>(d)) |
| 31 | Ty = decl->getType(); |
| 32 | else if (FieldDecl *decl = dyn_cast<FieldDecl>(d)) |
| 33 | Ty = decl->getType(); |
| 34 | else if (TypedefDecl* decl = dyn_cast<TypedefDecl>(d)) |
| 35 | Ty = decl->getUnderlyingType(); |
| 36 | else |
| 37 | return 0; |
| 38 | |
| 39 | if (Ty->isFunctionPointerType()) |
| 40 | Ty = Ty->getAsPointerType()->getPointeeType(); |
Daniel Dunbar | d3f2c10 | 2008-10-19 02:04:16 +0000 | [diff] [blame] | 41 | |
| 42 | return Ty->getAsFunctionType(); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 43 | } |
| 44 | |
Daniel Dunbar | 3568249 | 2008-09-26 04:12:28 +0000 | [diff] [blame] | 45 | // FIXME: We should provide an abstraction around a method or function |
| 46 | // to provide the following bits of information. |
| 47 | |
Daniel Dunbar | d3f2c10 | 2008-10-19 02:04:16 +0000 | [diff] [blame] | 48 | /// isFunctionOrMethod - Return true if the given decl has function |
| 49 | /// type (function or function-typed variable) or an Objective-C |
| 50 | /// method. |
Daniel Dunbar | 3568249 | 2008-09-26 04:12:28 +0000 | [diff] [blame] | 51 | static bool isFunctionOrMethod(Decl *d) { |
Daniel Dunbar | d3f2c10 | 2008-10-19 02:04:16 +0000 | [diff] [blame] | 52 | return getFunctionType(d) || isa<ObjCMethodDecl>(d); |
Daniel Dunbar | 3568249 | 2008-09-26 04:12:28 +0000 | [diff] [blame] | 53 | } |
| 54 | |
Daniel Dunbar | d3f2c10 | 2008-10-19 02:04:16 +0000 | [diff] [blame] | 55 | /// hasFunctionProto - Return true if the given decl has a argument |
| 56 | /// information. This decl should have already passed |
| 57 | /// isFunctionOrMethod. |
| 58 | static bool hasFunctionProto(Decl *d) { |
| 59 | if (const FunctionType *FnTy = getFunctionType(d)) { |
| 60 | return isa<FunctionTypeProto>(FnTy); |
| 61 | } else { |
| 62 | assert(isa<ObjCMethodDecl>(d)); |
| 63 | return true; |
| 64 | } |
| 65 | } |
| 66 | |
| 67 | /// getFunctionOrMethodNumArgs - Return number of function or method |
| 68 | /// arguments. It is an error to call this on a K&R function (use |
| 69 | /// hasFunctionProto first). |
Daniel Dunbar | 3568249 | 2008-09-26 04:12:28 +0000 | [diff] [blame] | 70 | static unsigned getFunctionOrMethodNumArgs(Decl *d) { |
Daniel Dunbar | d3f2c10 | 2008-10-19 02:04:16 +0000 | [diff] [blame] | 71 | if (const FunctionType *FnTy = getFunctionType(d)) { |
| 72 | const FunctionTypeProto *proto = cast<FunctionTypeProto>(FnTy); |
Daniel Dunbar | 3568249 | 2008-09-26 04:12:28 +0000 | [diff] [blame] | 73 | return proto->getNumArgs(); |
| 74 | } else { |
| 75 | return cast<ObjCMethodDecl>(d)->getNumParams(); |
| 76 | } |
| 77 | } |
| 78 | |
| 79 | static QualType getFunctionOrMethodArgType(Decl *d, unsigned Idx) { |
Daniel Dunbar | d3f2c10 | 2008-10-19 02:04:16 +0000 | [diff] [blame] | 80 | if (const FunctionType *FnTy = getFunctionType(d)) { |
| 81 | const FunctionTypeProto *proto = cast<FunctionTypeProto>(FnTy); |
Daniel Dunbar | 3568249 | 2008-09-26 04:12:28 +0000 | [diff] [blame] | 82 | return proto->getArgType(Idx); |
| 83 | } else { |
| 84 | return cast<ObjCMethodDecl>(d)->getParamDecl(Idx)->getType(); |
| 85 | } |
| 86 | } |
| 87 | |
| 88 | static bool isFunctionOrMethodVariadic(Decl *d) { |
Daniel Dunbar | d3f2c10 | 2008-10-19 02:04:16 +0000 | [diff] [blame] | 89 | if (const FunctionType *FnTy = getFunctionType(d)) { |
| 90 | const FunctionTypeProto *proto = cast<FunctionTypeProto>(FnTy); |
Daniel Dunbar | 3568249 | 2008-09-26 04:12:28 +0000 | [diff] [blame] | 91 | return proto->isVariadic(); |
| 92 | } else { |
| 93 | return cast<ObjCMethodDecl>(d)->isVariadic(); |
| 94 | } |
| 95 | } |
| 96 | |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 97 | static inline bool isNSStringType(QualType T, ASTContext &Ctx) { |
Chris Lattner | b77792e | 2008-07-26 22:17:49 +0000 | [diff] [blame] | 98 | const PointerType *PT = T->getAsPointerType(); |
| 99 | if (!PT) |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 100 | return false; |
| 101 | |
Chris Lattner | b77792e | 2008-07-26 22:17:49 +0000 | [diff] [blame] | 102 | const ObjCInterfaceType *ClsT =PT->getPointeeType()->getAsObjCInterfaceType(); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 103 | if (!ClsT) |
| 104 | return false; |
| 105 | |
| 106 | IdentifierInfo* ClsName = ClsT->getDecl()->getIdentifier(); |
| 107 | |
| 108 | // FIXME: Should we walk the chain of classes? |
| 109 | return ClsName == &Ctx.Idents.get("NSString") || |
| 110 | ClsName == &Ctx.Idents.get("NSMutableString"); |
| 111 | } |
| 112 | |
Daniel Dunbar | 085e8f7 | 2008-09-26 03:32:58 +0000 | [diff] [blame] | 113 | static inline bool isCFStringType(QualType T, ASTContext &Ctx) { |
| 114 | const PointerType *PT = T->getAsPointerType(); |
| 115 | if (!PT) |
| 116 | return false; |
| 117 | |
| 118 | const RecordType *RT = PT->getPointeeType()->getAsRecordType(); |
| 119 | if (!RT) |
| 120 | return false; |
| 121 | |
| 122 | const RecordDecl *RD = RT->getDecl(); |
| 123 | if (RD->getTagKind() != TagDecl::TK_struct) |
| 124 | return false; |
| 125 | |
| 126 | return RD->getIdentifier() == &Ctx.Idents.get("__CFString"); |
| 127 | } |
| 128 | |
Chris Lattner | e5c5ee1 | 2008-06-29 00:16:31 +0000 | [diff] [blame] | 129 | //===----------------------------------------------------------------------===// |
Chris Lattner | e5c5ee1 | 2008-06-29 00:16:31 +0000 | [diff] [blame] | 130 | // Attribute Implementations |
| 131 | //===----------------------------------------------------------------------===// |
| 132 | |
Daniel Dunbar | 3068ae0 | 2008-07-31 22:40:48 +0000 | [diff] [blame] | 133 | // FIXME: All this manual attribute parsing code is gross. At the |
| 134 | // least add some helper functions to check most argument patterns (# |
| 135 | // and types of args). |
| 136 | |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 137 | static void HandleExtVectorTypeAttr(Decl *d, const AttributeList &Attr, |
| 138 | Sema &S) { |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 139 | TypedefDecl *tDecl = dyn_cast<TypedefDecl>(d); |
| 140 | if (tDecl == 0) { |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 141 | S.Diag(Attr.getLoc(), diag::err_typecheck_ext_vector_not_typedef); |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 142 | return; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 143 | } |
| 144 | |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 145 | QualType curType = tDecl->getUnderlyingType(); |
| 146 | // check the attribute arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 147 | if (Attr.getNumArgs() != 1) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 148 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 149 | return; |
| 150 | } |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 151 | Expr *sizeExpr = static_cast<Expr *>(Attr.getArg(0)); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 152 | llvm::APSInt vecSize(32); |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 153 | if (!sizeExpr->isIntegerConstantExpr(vecSize, S.Context)) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 154 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_not_int) |
| 155 | << "ext_vector_type" << sizeExpr->getSourceRange(); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 156 | return; |
| 157 | } |
| 158 | // unlike gcc's vector_size attribute, we do not allow vectors to be defined |
| 159 | // in conjunction with complex types (pointers, arrays, functions, etc.). |
Chris Lattner | b77792e | 2008-07-26 22:17:49 +0000 | [diff] [blame] | 160 | if (!curType->isIntegerType() && !curType->isRealFloatingType()) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 161 | S.Diag(Attr.getLoc(), diag::err_attribute_invalid_vector_type) |
| 162 | << curType.getAsString(); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 163 | return; |
| 164 | } |
| 165 | // unlike gcc's vector_size attribute, the size is specified as the |
| 166 | // number of elements, not the number of bytes. |
| 167 | unsigned vectorSize = static_cast<unsigned>(vecSize.getZExtValue()); |
| 168 | |
| 169 | if (vectorSize == 0) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 170 | S.Diag(Attr.getLoc(), diag::err_attribute_zero_size) |
| 171 | << sizeExpr->getSourceRange(); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 172 | return; |
| 173 | } |
| 174 | // Instantiate/Install the vector type, the number of elements is > 0. |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 175 | tDecl->setUnderlyingType(S.Context.getExtVectorType(curType, vectorSize)); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 176 | // Remember this typedef decl, we will need it later for diagnostics. |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 177 | S.ExtVectorDecls.push_back(tDecl); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 178 | } |
| 179 | |
Chris Lattner | 065c5a8 | 2008-06-28 23:48:25 +0000 | [diff] [blame] | 180 | |
| 181 | /// HandleVectorSizeAttribute - this attribute is only applicable to |
| 182 | /// integral and float scalars, although arrays, pointers, and function |
| 183 | /// return values are allowed in conjunction with this construct. Aggregates |
| 184 | /// with this attribute are invalid, even if they are of the same size as a |
| 185 | /// corresponding scalar. |
| 186 | /// The raw attribute should contain precisely 1 argument, the vector size |
| 187 | /// for the variable, measured in bytes. If curType and rawAttr are well |
| 188 | /// formed, this routine will return a new vector type. |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 189 | static void HandleVectorSizeAttr(Decl *D, const AttributeList &Attr, Sema &S) { |
Chris Lattner | 065c5a8 | 2008-06-28 23:48:25 +0000 | [diff] [blame] | 190 | QualType CurType; |
| 191 | if (ValueDecl *VD = dyn_cast<ValueDecl>(D)) |
| 192 | CurType = VD->getType(); |
| 193 | else if (TypedefDecl *TD = dyn_cast<TypedefDecl>(D)) |
| 194 | CurType = TD->getUnderlyingType(); |
| 195 | else { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 196 | S.Diag(D->getLocation(), diag::err_attr_wrong_decl) |
| 197 | << "vector_size" << SourceRange(Attr.getLoc(), Attr.getLoc()); |
Chris Lattner | 065c5a8 | 2008-06-28 23:48:25 +0000 | [diff] [blame] | 198 | return; |
| 199 | } |
| 200 | |
| 201 | // Check the attribute arugments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 202 | if (Attr.getNumArgs() != 1) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 203 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; |
Chris Lattner | 065c5a8 | 2008-06-28 23:48:25 +0000 | [diff] [blame] | 204 | return; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 205 | } |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 206 | Expr *sizeExpr = static_cast<Expr *>(Attr.getArg(0)); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 207 | llvm::APSInt vecSize(32); |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 208 | if (!sizeExpr->isIntegerConstantExpr(vecSize, S.Context)) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 209 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_not_int) |
| 210 | << "vector_size" << sizeExpr->getSourceRange(); |
Chris Lattner | 065c5a8 | 2008-06-28 23:48:25 +0000 | [diff] [blame] | 211 | return; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 212 | } |
| 213 | // navigate to the base type - we need to provide for vector pointers, |
| 214 | // vector arrays, and functions returning vectors. |
Chris Lattner | b77792e | 2008-07-26 22:17:49 +0000 | [diff] [blame] | 215 | if (CurType->isPointerType() || CurType->isArrayType() || |
| 216 | CurType->isFunctionType()) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 217 | assert(0 && "HandleVector(): Complex type construction unimplemented"); |
| 218 | /* FIXME: rebuild the type from the inside out, vectorizing the inner type. |
| 219 | do { |
| 220 | if (PointerType *PT = dyn_cast<PointerType>(canonType)) |
| 221 | canonType = PT->getPointeeType().getTypePtr(); |
| 222 | else if (ArrayType *AT = dyn_cast<ArrayType>(canonType)) |
| 223 | canonType = AT->getElementType().getTypePtr(); |
| 224 | else if (FunctionType *FT = dyn_cast<FunctionType>(canonType)) |
| 225 | canonType = FT->getResultType().getTypePtr(); |
| 226 | } while (canonType->isPointerType() || canonType->isArrayType() || |
| 227 | canonType->isFunctionType()); |
| 228 | */ |
| 229 | } |
| 230 | // the base type must be integer or float. |
Chris Lattner | b77792e | 2008-07-26 22:17:49 +0000 | [diff] [blame] | 231 | if (!CurType->isIntegerType() && !CurType->isRealFloatingType()) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 232 | S.Diag(Attr.getLoc(), diag::err_attribute_invalid_vector_type) |
| 233 | << CurType.getAsString(); |
Chris Lattner | 065c5a8 | 2008-06-28 23:48:25 +0000 | [diff] [blame] | 234 | return; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 235 | } |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 236 | unsigned typeSize = static_cast<unsigned>(S.Context.getTypeSize(CurType)); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 237 | // vecSize is specified in bytes - convert to bits. |
| 238 | unsigned vectorSize = static_cast<unsigned>(vecSize.getZExtValue() * 8); |
| 239 | |
| 240 | // the vector size needs to be an integral multiple of the type size. |
| 241 | if (vectorSize % typeSize) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 242 | S.Diag(Attr.getLoc(), diag::err_attribute_invalid_size) |
| 243 | << sizeExpr->getSourceRange(); |
Chris Lattner | 065c5a8 | 2008-06-28 23:48:25 +0000 | [diff] [blame] | 244 | return; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 245 | } |
| 246 | if (vectorSize == 0) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 247 | S.Diag(Attr.getLoc(), diag::err_attribute_zero_size) |
| 248 | << sizeExpr->getSourceRange(); |
Chris Lattner | 065c5a8 | 2008-06-28 23:48:25 +0000 | [diff] [blame] | 249 | return; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 250 | } |
Chris Lattner | 065c5a8 | 2008-06-28 23:48:25 +0000 | [diff] [blame] | 251 | |
| 252 | // Success! Instantiate the vector type, the number of elements is > 0, and |
| 253 | // not required to be a power of 2, unlike GCC. |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 254 | CurType = S.Context.getVectorType(CurType, vectorSize/typeSize); |
Chris Lattner | 065c5a8 | 2008-06-28 23:48:25 +0000 | [diff] [blame] | 255 | |
| 256 | if (ValueDecl *VD = dyn_cast<ValueDecl>(D)) |
| 257 | VD->setType(CurType); |
| 258 | else |
| 259 | cast<TypedefDecl>(D)->setUnderlyingType(CurType); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 260 | } |
| 261 | |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 262 | static void HandlePackedAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 263 | // check the attribute arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 264 | if (Attr.getNumArgs() > 0) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 265 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 266 | return; |
| 267 | } |
| 268 | |
| 269 | if (TagDecl *TD = dyn_cast<TagDecl>(d)) |
Daniel Dunbar | 3b0db90 | 2008-10-16 02:34:03 +0000 | [diff] [blame] | 270 | TD->addAttr(new PackedAttr(1)); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 271 | else if (FieldDecl *FD = dyn_cast<FieldDecl>(d)) { |
| 272 | // If the alignment is less than or equal to 8 bits, the packed attribute |
| 273 | // has no effect. |
| 274 | if (!FD->getType()->isIncompleteType() && |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 275 | S.Context.getTypeAlign(FD->getType()) <= 8) |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 276 | S.Diag(Attr.getLoc(), diag::warn_attribute_ignored_for_field_of_type) |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 277 | << Attr.getName() << FD->getType().getAsString(); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 278 | else |
Daniel Dunbar | 3b0db90 | 2008-10-16 02:34:03 +0000 | [diff] [blame] | 279 | FD->addAttr(new PackedAttr(1)); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 280 | } else |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 281 | S.Diag(Attr.getLoc(), diag::warn_attribute_ignored) << Attr.getName(); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 282 | } |
| 283 | |
Ted Kremenek | 96329d4 | 2008-07-15 22:26:48 +0000 | [diff] [blame] | 284 | static void HandleIBOutletAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
| 285 | // check the attribute arguments. |
| 286 | if (Attr.getNumArgs() > 0) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 287 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
Ted Kremenek | 96329d4 | 2008-07-15 22:26:48 +0000 | [diff] [blame] | 288 | return; |
| 289 | } |
| 290 | |
| 291 | // The IBOutlet attribute only applies to instance variables of Objective-C |
| 292 | // classes. |
| 293 | if (ObjCIvarDecl *ID = dyn_cast<ObjCIvarDecl>(d)) |
| 294 | ID->addAttr(new IBOutletAttr()); |
| 295 | else |
| 296 | S.Diag(Attr.getLoc(), diag::err_attribute_iboutlet_non_ivar); |
| 297 | } |
| 298 | |
Ted Kremenek | eb2b2a3 | 2008-07-21 21:53:04 +0000 | [diff] [blame] | 299 | static void HandleNonNullAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Ted Kremenek | eb2b2a3 | 2008-07-21 21:53:04 +0000 | [diff] [blame] | 300 | // GCC ignores the nonnull attribute on K&R style function |
| 301 | // prototypes, so we ignore it as well |
Daniel Dunbar | d3f2c10 | 2008-10-19 02:04:16 +0000 | [diff] [blame] | 302 | if (!isFunctionOrMethod(d) || !hasFunctionProto(d)) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 303 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) |
| 304 | << "nonnull" << "function"; |
Ted Kremenek | eb2b2a3 | 2008-07-21 21:53:04 +0000 | [diff] [blame] | 305 | return; |
| 306 | } |
| 307 | |
Daniel Dunbar | d3f2c10 | 2008-10-19 02:04:16 +0000 | [diff] [blame] | 308 | unsigned NumArgs = getFunctionOrMethodNumArgs(d); |
Ted Kremenek | eb2b2a3 | 2008-07-21 21:53:04 +0000 | [diff] [blame] | 309 | |
| 310 | // The nonnull attribute only applies to pointers. |
| 311 | llvm::SmallVector<unsigned, 10> NonNullArgs; |
| 312 | |
| 313 | for (AttributeList::arg_iterator I=Attr.arg_begin(), |
| 314 | E=Attr.arg_end(); I!=E; ++I) { |
| 315 | |
| 316 | |
| 317 | // The argument must be an integer constant expression. |
| 318 | Expr *Ex = static_cast<Expr *>(Attr.getArg(0)); |
| 319 | llvm::APSInt ArgNum(32); |
| 320 | if (!Ex->isIntegerConstantExpr(ArgNum, S.Context)) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 321 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_not_int) |
| 322 | << "nonnull" << Ex->getSourceRange(); |
Ted Kremenek | eb2b2a3 | 2008-07-21 21:53:04 +0000 | [diff] [blame] | 323 | return; |
| 324 | } |
| 325 | |
| 326 | unsigned x = (unsigned) ArgNum.getZExtValue(); |
| 327 | |
| 328 | if (x < 1 || x > NumArgs) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 329 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_out_of_bounds) |
Chris Lattner | 30bc965 | 2008-11-19 07:22:31 +0000 | [diff] [blame] | 330 | << "nonnull" << I.getArgNum() << Ex->getSourceRange(); |
Ted Kremenek | eb2b2a3 | 2008-07-21 21:53:04 +0000 | [diff] [blame] | 331 | return; |
| 332 | } |
Ted Kremenek | 465172f | 2008-07-21 22:09:15 +0000 | [diff] [blame] | 333 | |
| 334 | --x; |
Ted Kremenek | eb2b2a3 | 2008-07-21 21:53:04 +0000 | [diff] [blame] | 335 | |
| 336 | // Is the function argument a pointer type? |
Ted Kremenek | 46bbaca | 2008-11-18 06:52:58 +0000 | [diff] [blame] | 337 | QualType T = getFunctionOrMethodArgType(d, x); |
| 338 | if (!T->isPointerType() && !T->isBlockPointerType()) { |
Ted Kremenek | eb2b2a3 | 2008-07-21 21:53:04 +0000 | [diff] [blame] | 339 | // FIXME: Should also highlight argument in decl. |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 340 | S.Diag(Attr.getLoc(), diag::err_nonnull_pointers_only) |
| 341 | << "nonnull" << Ex->getSourceRange(); |
Ted Kremenek | 7fb43c1 | 2008-09-01 19:57:52 +0000 | [diff] [blame] | 342 | continue; |
Ted Kremenek | eb2b2a3 | 2008-07-21 21:53:04 +0000 | [diff] [blame] | 343 | } |
| 344 | |
| 345 | NonNullArgs.push_back(x); |
| 346 | } |
| 347 | |
Ted Kremenek | 7fb43c1 | 2008-09-01 19:57:52 +0000 | [diff] [blame] | 348 | // If no arguments were specified to __attribute__((nonnull)) then all |
| 349 | // pointer arguments have a nonnull attribute. |
| 350 | if (NonNullArgs.empty()) { |
Ted Kremenek | 46bbaca | 2008-11-18 06:52:58 +0000 | [diff] [blame] | 351 | for (unsigned I = 0, E = getFunctionOrMethodNumArgs(d); I != E; ++I) { |
| 352 | QualType T = getFunctionOrMethodArgType(d, I); |
| 353 | if (T->isPointerType() || T->isBlockPointerType()) |
Daniel Dunbar | d3f2c10 | 2008-10-19 02:04:16 +0000 | [diff] [blame] | 354 | NonNullArgs.push_back(I); |
Ted Kremenek | 46bbaca | 2008-11-18 06:52:58 +0000 | [diff] [blame] | 355 | } |
Ted Kremenek | 7fb43c1 | 2008-09-01 19:57:52 +0000 | [diff] [blame] | 356 | |
| 357 | if (NonNullArgs.empty()) { |
| 358 | S.Diag(Attr.getLoc(), diag::warn_attribute_nonnull_no_pointers); |
| 359 | return; |
| 360 | } |
Ted Kremenek | eb2b2a3 | 2008-07-21 21:53:04 +0000 | [diff] [blame] | 361 | } |
Ted Kremenek | 7fb43c1 | 2008-09-01 19:57:52 +0000 | [diff] [blame] | 362 | |
| 363 | unsigned* start = &NonNullArgs[0]; |
| 364 | unsigned size = NonNullArgs.size(); |
| 365 | std::sort(start, start + size); |
| 366 | d->addAttr(new NonNullAttr(start, size)); |
Ted Kremenek | eb2b2a3 | 2008-07-21 21:53:04 +0000 | [diff] [blame] | 367 | } |
| 368 | |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 369 | static void HandleAliasAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 370 | // check the attribute arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 371 | if (Attr.getNumArgs() != 1) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 372 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 373 | return; |
| 374 | } |
| 375 | |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 376 | Expr *Arg = static_cast<Expr*>(Attr.getArg(0)); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 377 | Arg = Arg->IgnoreParenCasts(); |
| 378 | StringLiteral *Str = dyn_cast<StringLiteral>(Arg); |
| 379 | |
| 380 | if (Str == 0 || Str->isWide()) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 381 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_string) |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 382 | << "alias" << 1; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 383 | return; |
| 384 | } |
| 385 | |
| 386 | const char *Alias = Str->getStrData(); |
| 387 | unsigned AliasLen = Str->getByteLength(); |
| 388 | |
| 389 | // FIXME: check if target symbol exists in current file |
| 390 | |
| 391 | d->addAttr(new AliasAttr(std::string(Alias, AliasLen))); |
| 392 | } |
| 393 | |
Daniel Dunbar | af668b0 | 2008-10-28 00:17:57 +0000 | [diff] [blame] | 394 | static void HandleAlwaysInlineAttr(Decl *d, const AttributeList &Attr, |
| 395 | Sema &S) { |
| 396 | // check the attribute arguments. |
| 397 | if (Attr.getNumArgs() != 0) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 398 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
Daniel Dunbar | af668b0 | 2008-10-28 00:17:57 +0000 | [diff] [blame] | 399 | return; |
| 400 | } |
| 401 | |
| 402 | d->addAttr(new AlwaysInlineAttr()); |
| 403 | } |
| 404 | |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 405 | static void HandleNoReturnAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 406 | // check the attribute arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 407 | if (Attr.getNumArgs() != 0) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 408 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 409 | return; |
| 410 | } |
Daniel Dunbar | d3f2c10 | 2008-10-19 02:04:16 +0000 | [diff] [blame] | 411 | |
| 412 | if (!isFunctionOrMethod(d)) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 413 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) |
| 414 | << "noreturn" << "function"; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 415 | return; |
| 416 | } |
| 417 | |
| 418 | d->addAttr(new NoReturnAttr()); |
| 419 | } |
| 420 | |
Ted Kremenek | 7379889 | 2008-07-25 04:39:19 +0000 | [diff] [blame] | 421 | static void HandleUnusedAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
| 422 | // check the attribute arguments. |
| 423 | if (Attr.getNumArgs() != 0) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 424 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
Ted Kremenek | 7379889 | 2008-07-25 04:39:19 +0000 | [diff] [blame] | 425 | return; |
| 426 | } |
| 427 | |
Daniel Dunbar | d3f2c10 | 2008-10-19 02:04:16 +0000 | [diff] [blame] | 428 | if (!isa<VarDecl>(d) && !isFunctionOrMethod(d)) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 429 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) |
| 430 | << "unused" << "variable and function"; |
Ted Kremenek | 7379889 | 2008-07-25 04:39:19 +0000 | [diff] [blame] | 431 | return; |
| 432 | } |
| 433 | |
| 434 | d->addAttr(new UnusedAttr()); |
| 435 | } |
| 436 | |
Daniel Dunbar | 3068ae0 | 2008-07-31 22:40:48 +0000 | [diff] [blame] | 437 | static void HandleConstructorAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
| 438 | // check the attribute arguments. |
| 439 | if (Attr.getNumArgs() != 0 && Attr.getNumArgs() != 1) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 440 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) |
| 441 | << "0 or 1"; |
Daniel Dunbar | 3068ae0 | 2008-07-31 22:40:48 +0000 | [diff] [blame] | 442 | return; |
| 443 | } |
| 444 | |
| 445 | int priority = 65535; // FIXME: Do not hardcode such constants. |
| 446 | if (Attr.getNumArgs() > 0) { |
| 447 | Expr *E = static_cast<Expr *>(Attr.getArg(0)); |
| 448 | llvm::APSInt Idx(32); |
| 449 | if (!E->isIntegerConstantExpr(Idx, S.Context)) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 450 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_int) |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 451 | << "constructor" << 1 << E->getSourceRange(); |
Daniel Dunbar | 3068ae0 | 2008-07-31 22:40:48 +0000 | [diff] [blame] | 452 | return; |
| 453 | } |
| 454 | priority = Idx.getZExtValue(); |
| 455 | } |
| 456 | |
| 457 | FunctionDecl *Fn = dyn_cast<FunctionDecl>(d); |
| 458 | if (!Fn) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 459 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) |
| 460 | << "constructor" << "function"; |
Daniel Dunbar | 3068ae0 | 2008-07-31 22:40:48 +0000 | [diff] [blame] | 461 | return; |
| 462 | } |
| 463 | |
| 464 | d->addAttr(new ConstructorAttr(priority)); |
| 465 | } |
| 466 | |
| 467 | static void HandleDestructorAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
| 468 | // check the attribute arguments. |
| 469 | if (Attr.getNumArgs() != 0 && Attr.getNumArgs() != 1) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 470 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) |
| 471 | << "0 or 1"; |
Daniel Dunbar | 3068ae0 | 2008-07-31 22:40:48 +0000 | [diff] [blame] | 472 | return; |
| 473 | } |
| 474 | |
| 475 | int priority = 65535; // FIXME: Do not hardcode such constants. |
| 476 | if (Attr.getNumArgs() > 0) { |
| 477 | Expr *E = static_cast<Expr *>(Attr.getArg(0)); |
| 478 | llvm::APSInt Idx(32); |
| 479 | if (!E->isIntegerConstantExpr(Idx, S.Context)) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 480 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_int) |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 481 | << "destructor" << 1 << E->getSourceRange(); |
Daniel Dunbar | 3068ae0 | 2008-07-31 22:40:48 +0000 | [diff] [blame] | 482 | return; |
| 483 | } |
| 484 | priority = Idx.getZExtValue(); |
| 485 | } |
| 486 | |
Anders Carlsson | 6782fc6 | 2008-08-22 22:10:48 +0000 | [diff] [blame] | 487 | if (!isa<FunctionDecl>(d)) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 488 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) |
| 489 | << "destructor" << "function"; |
Daniel Dunbar | 3068ae0 | 2008-07-31 22:40:48 +0000 | [diff] [blame] | 490 | return; |
| 491 | } |
| 492 | |
| 493 | d->addAttr(new DestructorAttr(priority)); |
| 494 | } |
| 495 | |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 496 | static void HandleDeprecatedAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 497 | // check the attribute arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 498 | if (Attr.getNumArgs() != 0) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 499 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 500 | return; |
| 501 | } |
| 502 | |
| 503 | d->addAttr(new DeprecatedAttr()); |
| 504 | } |
| 505 | |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 506 | static void HandleVisibilityAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 507 | // check the attribute arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 508 | if (Attr.getNumArgs() != 1) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 509 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 510 | return; |
| 511 | } |
| 512 | |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 513 | Expr *Arg = static_cast<Expr*>(Attr.getArg(0)); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 514 | Arg = Arg->IgnoreParenCasts(); |
| 515 | StringLiteral *Str = dyn_cast<StringLiteral>(Arg); |
| 516 | |
| 517 | if (Str == 0 || Str->isWide()) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 518 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_string) |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 519 | << "visibility" << 1; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 520 | return; |
| 521 | } |
| 522 | |
| 523 | const char *TypeStr = Str->getStrData(); |
| 524 | unsigned TypeLen = Str->getByteLength(); |
| 525 | VisibilityAttr::VisibilityTypes type; |
| 526 | |
| 527 | if (TypeLen == 7 && !memcmp(TypeStr, "default", 7)) |
| 528 | type = VisibilityAttr::DefaultVisibility; |
| 529 | else if (TypeLen == 6 && !memcmp(TypeStr, "hidden", 6)) |
| 530 | type = VisibilityAttr::HiddenVisibility; |
| 531 | else if (TypeLen == 8 && !memcmp(TypeStr, "internal", 8)) |
| 532 | type = VisibilityAttr::HiddenVisibility; // FIXME |
| 533 | else if (TypeLen == 9 && !memcmp(TypeStr, "protected", 9)) |
| 534 | type = VisibilityAttr::ProtectedVisibility; |
| 535 | else { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 536 | S.Diag(Attr.getLoc(), diag::warn_attribute_type_not_supported) |
| 537 | << "visibility" << TypeStr; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 538 | return; |
| 539 | } |
| 540 | |
| 541 | d->addAttr(new VisibilityAttr(type)); |
| 542 | } |
| 543 | |
Anders Carlsson | aa0d25b | 2008-08-23 23:22:21 +0000 | [diff] [blame] | 544 | static void HandleObjCGCAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Anders Carlsson | 6e14a8f | 2008-08-24 16:33:25 +0000 | [diff] [blame] | 545 | if (!Attr.getParameterName()) { |
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 | << "objc_gc" << 1; |
Anders Carlsson | aa0d25b | 2008-08-23 23:22:21 +0000 | [diff] [blame] | 548 | return; |
| 549 | } |
| 550 | |
| 551 | if (Attr.getNumArgs() != 0) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 552 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; |
Anders Carlsson | aa0d25b | 2008-08-23 23:22:21 +0000 | [diff] [blame] | 553 | return; |
| 554 | } |
| 555 | |
Anders Carlsson | aa0d25b | 2008-08-23 23:22:21 +0000 | [diff] [blame] | 556 | |
| 557 | ObjCGCAttr::GCAttrTypes type; |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 558 | if (Attr.getParameterName()->isName("weak")) |
Anders Carlsson | aa0d25b | 2008-08-23 23:22:21 +0000 | [diff] [blame] | 559 | type = ObjCGCAttr::Weak; |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 560 | else if (Attr.getParameterName()->isName("strong")) |
Anders Carlsson | aa0d25b | 2008-08-23 23:22:21 +0000 | [diff] [blame] | 561 | type = ObjCGCAttr::Strong; |
| 562 | else { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 563 | S.Diag(Attr.getLoc(), diag::warn_attribute_type_not_supported) |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 564 | << "objc_gc" << Attr.getParameterName(); |
Anders Carlsson | aa0d25b | 2008-08-23 23:22:21 +0000 | [diff] [blame] | 565 | return; |
| 566 | } |
| 567 | |
| 568 | d->addAttr(new ObjCGCAttr(type)); |
| 569 | } |
| 570 | |
Steve Naroff | 9eae576 | 2008-09-18 16:44:58 +0000 | [diff] [blame] | 571 | static void HandleBlocksAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
| 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 | << "blocks" << 1; |
Steve Naroff | 9eae576 | 2008-09-18 16:44:58 +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; |
Steve Naroff | 9eae576 | 2008-09-18 16:44:58 +0000 | [diff] [blame] | 580 | return; |
| 581 | } |
Steve Naroff | 9eae576 | 2008-09-18 16:44:58 +0000 | [diff] [blame] | 582 | |
| 583 | BlocksAttr::BlocksAttrTypes type; |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 584 | if (Attr.getParameterName()->isName("byref")) |
Steve Naroff | 9eae576 | 2008-09-18 16:44:58 +0000 | [diff] [blame] | 585 | type = BlocksAttr::ByRef; |
| 586 | else { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 587 | S.Diag(Attr.getLoc(), diag::warn_attribute_type_not_supported) |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 588 | << "blocks" << Attr.getParameterName(); |
Steve Naroff | 9eae576 | 2008-09-18 16:44:58 +0000 | [diff] [blame] | 589 | return; |
| 590 | } |
| 591 | |
| 592 | d->addAttr(new BlocksAttr(type)); |
| 593 | } |
| 594 | |
Anders Carlsson | 7709182 | 2008-10-05 18:05:59 +0000 | [diff] [blame] | 595 | static void HandleSentinelAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
| 596 | // check the attribute arguments. |
| 597 | if (Attr.getNumArgs() > 2) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 598 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) |
| 599 | << "0, 1 or 2"; |
Anders Carlsson | 7709182 | 2008-10-05 18:05:59 +0000 | [diff] [blame] | 600 | return; |
| 601 | } |
| 602 | |
| 603 | int sentinel = 0; |
| 604 | if (Attr.getNumArgs() > 0) { |
| 605 | Expr *E = static_cast<Expr *>(Attr.getArg(0)); |
| 606 | llvm::APSInt Idx(32); |
| 607 | if (!E->isIntegerConstantExpr(Idx, S.Context)) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 608 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_int) |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 609 | << "sentinel" << 1 << E->getSourceRange(); |
Anders Carlsson | 7709182 | 2008-10-05 18:05:59 +0000 | [diff] [blame] | 610 | return; |
| 611 | } |
| 612 | sentinel = Idx.getZExtValue(); |
| 613 | |
| 614 | if (sentinel < 0) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 615 | S.Diag(Attr.getLoc(), diag::err_attribute_sentinel_less_than_zero) |
| 616 | << E->getSourceRange(); |
Anders Carlsson | 7709182 | 2008-10-05 18:05:59 +0000 | [diff] [blame] | 617 | return; |
| 618 | } |
| 619 | } |
| 620 | |
| 621 | int nullPos = 0; |
| 622 | if (Attr.getNumArgs() > 1) { |
| 623 | Expr *E = static_cast<Expr *>(Attr.getArg(1)); |
| 624 | llvm::APSInt Idx(32); |
| 625 | if (!E->isIntegerConstantExpr(Idx, S.Context)) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 626 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_int) |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 627 | << "sentinel" << 2 << E->getSourceRange(); |
Anders Carlsson | 7709182 | 2008-10-05 18:05:59 +0000 | [diff] [blame] | 628 | return; |
| 629 | } |
| 630 | nullPos = Idx.getZExtValue(); |
| 631 | |
| 632 | if (nullPos > 1 || nullPos < 0) { |
| 633 | // FIXME: This error message could be improved, it would be nice |
| 634 | // to say what the bounds actually are. |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 635 | S.Diag(Attr.getLoc(), diag::err_attribute_sentinel_not_zero_or_one) |
| 636 | << E->getSourceRange(); |
Anders Carlsson | 7709182 | 2008-10-05 18:05:59 +0000 | [diff] [blame] | 637 | return; |
| 638 | } |
| 639 | } |
| 640 | |
| 641 | if (FunctionDecl *FD = dyn_cast<FunctionDecl>(d)) { |
| 642 | QualType FT = FD->getType(); |
| 643 | if (!FT->getAsFunctionTypeProto()->isVariadic()) { |
| 644 | S.Diag(Attr.getLoc(), diag::warn_attribute_sentinel_not_variadic); |
| 645 | return; |
| 646 | } |
| 647 | } else if (ObjCMethodDecl *MD = dyn_cast<ObjCMethodDecl>(d)) { |
| 648 | if (!MD->isVariadic()) { |
| 649 | S.Diag(Attr.getLoc(), diag::warn_attribute_sentinel_not_variadic); |
| 650 | return; |
| 651 | } |
| 652 | } else { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 653 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) |
| 654 | << "sentinel" << "function or method"; |
Anders Carlsson | 7709182 | 2008-10-05 18:05:59 +0000 | [diff] [blame] | 655 | return; |
| 656 | } |
| 657 | |
| 658 | // FIXME: Actually create the attribute. |
| 659 | } |
| 660 | |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 661 | static void HandleWeakAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 662 | // check the attribute arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 663 | if (Attr.getNumArgs() != 0) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 664 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 665 | return; |
| 666 | } |
| 667 | |
| 668 | d->addAttr(new WeakAttr()); |
| 669 | } |
| 670 | |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 671 | static void HandleDLLImportAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 672 | // check the attribute arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 673 | if (Attr.getNumArgs() != 0) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 674 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 675 | return; |
| 676 | } |
| 677 | |
| 678 | d->addAttr(new DLLImportAttr()); |
| 679 | } |
| 680 | |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 681 | static void HandleDLLExportAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 682 | // check the attribute arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 683 | if (Attr.getNumArgs() != 0) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 684 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 685 | return; |
| 686 | } |
| 687 | |
| 688 | d->addAttr(new DLLExportAttr()); |
| 689 | } |
| 690 | |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 691 | static void HandleStdCallAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 692 | // check the attribute arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 693 | if (Attr.getNumArgs() != 0) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 694 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 695 | return; |
| 696 | } |
| 697 | |
| 698 | d->addAttr(new StdCallAttr()); |
| 699 | } |
| 700 | |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 701 | static void HandleFastCallAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 702 | // check the attribute arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 703 | if (Attr.getNumArgs() != 0) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 704 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 705 | return; |
| 706 | } |
| 707 | |
| 708 | d->addAttr(new FastCallAttr()); |
| 709 | } |
| 710 | |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 711 | static void HandleNothrowAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 712 | // check the attribute arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 713 | if (Attr.getNumArgs() != 0) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 714 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 715 | return; |
| 716 | } |
| 717 | |
| 718 | d->addAttr(new NoThrowAttr()); |
| 719 | } |
| 720 | |
Anders Carlsson | 232eb7d | 2008-10-05 23:32:53 +0000 | [diff] [blame] | 721 | static void HandleConstAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
| 722 | // check the attribute arguments. |
| 723 | if (Attr.getNumArgs() != 0) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 724 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
Anders Carlsson | 232eb7d | 2008-10-05 23:32:53 +0000 | [diff] [blame] | 725 | return; |
| 726 | } |
| 727 | |
| 728 | d->addAttr(new ConstAttr()); |
| 729 | } |
| 730 | |
| 731 | static void HandlePureAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
| 732 | // check the attribute arguments. |
| 733 | if (Attr.getNumArgs() != 0) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 734 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
Anders Carlsson | 232eb7d | 2008-10-05 23:32:53 +0000 | [diff] [blame] | 735 | return; |
| 736 | } |
| 737 | |
| 738 | d->addAttr(new PureAttr()); |
| 739 | } |
| 740 | |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 741 | /// Handle __attribute__((format(type,idx,firstarg))) attributes |
| 742 | /// based on http://gcc.gnu.org/onlinedocs/gcc/Function-Attributes.html |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 743 | static void HandleFormatAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 744 | |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 745 | if (!Attr.getParameterName()) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 746 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_string) |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 747 | << "format" << 1; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 748 | return; |
| 749 | } |
| 750 | |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 751 | if (Attr.getNumArgs() != 2) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 752 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 3; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 753 | return; |
| 754 | } |
| 755 | |
Daniel Dunbar | d3f2c10 | 2008-10-19 02:04:16 +0000 | [diff] [blame] | 756 | if (!isFunctionOrMethod(d) || !hasFunctionProto(d)) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 757 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) |
| 758 | << "format" << "function"; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 759 | return; |
| 760 | } |
| 761 | |
| 762 | // FIXME: in C++ the implicit 'this' function parameter also counts. |
| 763 | // this is needed in order to be compatible with GCC |
| 764 | // the index must start in 1 and the limit is numargs+1 |
Daniel Dunbar | 3568249 | 2008-09-26 04:12:28 +0000 | [diff] [blame] | 765 | unsigned NumArgs = getFunctionOrMethodNumArgs(d); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 766 | unsigned FirstIdx = 1; |
| 767 | |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 768 | const char *Format = Attr.getParameterName()->getName(); |
| 769 | unsigned FormatLen = Attr.getParameterName()->getLength(); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 770 | |
| 771 | // Normalize the argument, __foo__ becomes foo. |
| 772 | if (FormatLen > 4 && Format[0] == '_' && Format[1] == '_' && |
| 773 | Format[FormatLen - 2] == '_' && Format[FormatLen - 1] == '_') { |
| 774 | Format += 2; |
| 775 | FormatLen -= 4; |
| 776 | } |
| 777 | |
| 778 | bool Supported = false; |
| 779 | bool is_NSString = false; |
| 780 | bool is_strftime = false; |
Daniel Dunbar | 085e8f7 | 2008-09-26 03:32:58 +0000 | [diff] [blame] | 781 | bool is_CFString = false; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 782 | |
| 783 | switch (FormatLen) { |
| 784 | default: break; |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 785 | case 5: Supported = !memcmp(Format, "scanf", 5); break; |
| 786 | case 6: Supported = !memcmp(Format, "printf", 6); break; |
| 787 | case 7: Supported = !memcmp(Format, "strfmon", 7); break; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 788 | case 8: |
Daniel Dunbar | 085e8f7 | 2008-09-26 03:32:58 +0000 | [diff] [blame] | 789 | Supported = (is_strftime = !memcmp(Format, "strftime", 8)) || |
| 790 | (is_NSString = !memcmp(Format, "NSString", 8)) || |
| 791 | (is_CFString = !memcmp(Format, "CFString", 8)); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 792 | break; |
| 793 | } |
| 794 | |
| 795 | if (!Supported) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 796 | S.Diag(Attr.getLoc(), diag::warn_attribute_type_not_supported) |
| 797 | << "format" << Attr.getParameterName()->getName(); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 798 | return; |
| 799 | } |
| 800 | |
| 801 | // checks for the 2nd argument |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 802 | Expr *IdxExpr = static_cast<Expr *>(Attr.getArg(0)); |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 803 | llvm::APSInt Idx(32); |
| 804 | if (!IdxExpr->isIntegerConstantExpr(Idx, S.Context)) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 805 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_int) |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 806 | << "format" << 2 << IdxExpr->getSourceRange(); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 807 | return; |
| 808 | } |
| 809 | |
| 810 | if (Idx.getZExtValue() < FirstIdx || Idx.getZExtValue() > NumArgs) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 811 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_out_of_bounds) |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 812 | << "format" << 2 << IdxExpr->getSourceRange(); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 813 | return; |
| 814 | } |
| 815 | |
| 816 | // FIXME: Do we need to bounds check? |
| 817 | unsigned ArgIdx = Idx.getZExtValue() - 1; |
| 818 | |
| 819 | // make sure the format string is really a string |
Daniel Dunbar | 3568249 | 2008-09-26 04:12:28 +0000 | [diff] [blame] | 820 | QualType Ty = getFunctionOrMethodArgType(d, ArgIdx); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 821 | |
Daniel Dunbar | 085e8f7 | 2008-09-26 03:32:58 +0000 | [diff] [blame] | 822 | if (is_CFString) { |
| 823 | if (!isCFStringType(Ty, S.Context)) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 824 | S.Diag(Attr.getLoc(), diag::err_format_attribute_not) |
| 825 | << "a CFString" << IdxExpr->getSourceRange(); |
Daniel Dunbar | 085e8f7 | 2008-09-26 03:32:58 +0000 | [diff] [blame] | 826 | return; |
| 827 | } |
| 828 | } else if (is_NSString) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 829 | // FIXME: do we need to check if the type is NSString*? What are |
| 830 | // the semantics? |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 831 | if (!isNSStringType(Ty, S.Context)) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 832 | // FIXME: Should highlight the actual expression that has the |
| 833 | // wrong type. |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 834 | S.Diag(Attr.getLoc(), diag::err_format_attribute_not) |
| 835 | << "an NSString" << IdxExpr->getSourceRange(); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 836 | return; |
| 837 | } |
| 838 | } else if (!Ty->isPointerType() || |
| 839 | !Ty->getAsPointerType()->getPointeeType()->isCharType()) { |
| 840 | // FIXME: Should highlight the actual expression that has the |
| 841 | // wrong type. |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 842 | S.Diag(Attr.getLoc(), diag::err_format_attribute_not) |
| 843 | << "a string type" << IdxExpr->getSourceRange(); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 844 | return; |
| 845 | } |
| 846 | |
| 847 | // check the 3rd argument |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 848 | Expr *FirstArgExpr = static_cast<Expr *>(Attr.getArg(1)); |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 849 | llvm::APSInt FirstArg(32); |
| 850 | if (!FirstArgExpr->isIntegerConstantExpr(FirstArg, S.Context)) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 851 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_int) |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 852 | << "format" << 3 << FirstArgExpr->getSourceRange(); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 853 | return; |
| 854 | } |
| 855 | |
| 856 | // check if the function is variadic if the 3rd argument non-zero |
| 857 | if (FirstArg != 0) { |
Daniel Dunbar | 3568249 | 2008-09-26 04:12:28 +0000 | [diff] [blame] | 858 | if (isFunctionOrMethodVariadic(d)) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 859 | ++NumArgs; // +1 for ... |
| 860 | } else { |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 861 | S.Diag(d->getLocation(), diag::err_format_attribute_requires_variadic); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 862 | return; |
| 863 | } |
| 864 | } |
| 865 | |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 866 | // strftime requires FirstArg to be 0 because it doesn't read from any |
| 867 | // variable the input is just the current time + the format string. |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 868 | if (is_strftime) { |
| 869 | if (FirstArg != 0) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 870 | S.Diag(Attr.getLoc(), diag::err_format_strftime_third_parameter) |
| 871 | << FirstArgExpr->getSourceRange(); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 872 | return; |
| 873 | } |
| 874 | // if 0 it disables parameter checking (to use with e.g. va_list) |
| 875 | } else if (FirstArg != 0 && FirstArg != NumArgs) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 876 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_out_of_bounds) |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 877 | << "format" << 3 << FirstArgExpr->getSourceRange(); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 878 | return; |
| 879 | } |
| 880 | |
| 881 | d->addAttr(new FormatAttr(std::string(Format, FormatLen), |
| 882 | Idx.getZExtValue(), FirstArg.getZExtValue())); |
| 883 | } |
| 884 | |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 885 | static void HandleTransparentUnionAttr(Decl *d, const AttributeList &Attr, |
| 886 | Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 887 | // check the attribute arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 888 | if (Attr.getNumArgs() != 0) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 889 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 890 | return; |
| 891 | } |
| 892 | |
Eli Friedman | bc88745 | 2008-09-02 05:19:23 +0000 | [diff] [blame] | 893 | // FIXME: This shouldn't be restricted to typedefs |
| 894 | TypedefDecl *TD = dyn_cast<TypedefDecl>(d); |
| 895 | if (!TD || !TD->getUnderlyingType()->isUnionType()) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 896 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) |
| 897 | << "transparent_union" << "union"; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 898 | return; |
| 899 | } |
| 900 | |
Eli Friedman | bc88745 | 2008-09-02 05:19:23 +0000 | [diff] [blame] | 901 | RecordDecl* RD = TD->getUnderlyingType()->getAsUnionType()->getDecl(); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 902 | |
Eli Friedman | bc88745 | 2008-09-02 05:19:23 +0000 | [diff] [blame] | 903 | // FIXME: Should we do a check for RD->isDefinition()? |
| 904 | |
| 905 | // FIXME: This isn't supposed to be restricted to pointers, but otherwise |
| 906 | // we might silently generate incorrect code; see following code |
| 907 | for (int i = 0; i < RD->getNumMembers(); i++) { |
| 908 | if (!RD->getMember(i)->getType()->isPointerType()) { |
| 909 | S.Diag(Attr.getLoc(), diag::warn_transparent_union_nonpointer); |
| 910 | return; |
| 911 | } |
| 912 | } |
| 913 | |
| 914 | // FIXME: This is a complete hack; we should be properly propagating |
| 915 | // transparent_union through Sema. That said, this is close enough to |
| 916 | // correctly compile all the common cases of transparent_union without |
| 917 | // errors or warnings |
| 918 | QualType NewTy = S.Context.VoidPtrTy; |
| 919 | NewTy.addConst(); |
| 920 | TD->setUnderlyingType(NewTy); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 921 | } |
| 922 | |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 923 | static void HandleAnnotateAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 924 | // check the attribute arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 925 | if (Attr.getNumArgs() != 1) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 926 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 927 | return; |
| 928 | } |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 929 | Expr *argExpr = static_cast<Expr *>(Attr.getArg(0)); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 930 | StringLiteral *SE = dyn_cast<StringLiteral>(argExpr); |
| 931 | |
| 932 | // Make sure that there is a string literal as the annotation's single |
| 933 | // argument. |
| 934 | if (!SE) { |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 935 | S.Diag(Attr.getLoc(), diag::err_attribute_annotate_no_string); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 936 | return; |
| 937 | } |
| 938 | d->addAttr(new AnnotateAttr(std::string(SE->getStrData(), |
| 939 | SE->getByteLength()))); |
| 940 | } |
| 941 | |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 942 | static void HandleAlignedAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 943 | // check the attribute arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 944 | if (Attr.getNumArgs() > 1) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 945 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 946 | return; |
| 947 | } |
| 948 | |
| 949 | unsigned Align = 0; |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 950 | if (Attr.getNumArgs() == 0) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 951 | // FIXME: This should be the target specific maximum alignment. |
| 952 | // (For now we just use 128 bits which is the maximum on X86. |
| 953 | Align = 128; |
| 954 | return; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 955 | } |
Chris Lattner | 49e2d34 | 2008-06-28 23:50:44 +0000 | [diff] [blame] | 956 | |
| 957 | Expr *alignmentExpr = static_cast<Expr *>(Attr.getArg(0)); |
| 958 | llvm::APSInt Alignment(32); |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 959 | if (!alignmentExpr->isIntegerConstantExpr(Alignment, S.Context)) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 960 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_not_int) |
| 961 | << "aligned" << alignmentExpr->getSourceRange(); |
Chris Lattner | 49e2d34 | 2008-06-28 23:50:44 +0000 | [diff] [blame] | 962 | return; |
| 963 | } |
| 964 | d->addAttr(new AlignedAttr(Alignment.getZExtValue() * 8)); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 965 | } |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 966 | |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 967 | /// HandleModeAttr - This attribute modifies the width of a decl with |
Chris Lattner | 065c5a8 | 2008-06-28 23:48:25 +0000 | [diff] [blame] | 968 | /// primitive type. |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 969 | /// |
| 970 | /// Despite what would be logical, the mode attribute is a decl attribute, |
| 971 | /// not a type attribute: 'int ** __attribute((mode(HI))) *G;' tries to make |
| 972 | /// 'G' be HImode, not an intermediate pointer. |
| 973 | /// |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 974 | static void HandleModeAttr(Decl *D, const AttributeList &Attr, Sema &S) { |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 975 | // This attribute isn't documented, but glibc uses it. It changes |
| 976 | // the width of an int or unsigned int to the specified size. |
| 977 | |
| 978 | // Check that there aren't any arguments |
| 979 | if (Attr.getNumArgs() != 0) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 980 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 981 | return; |
| 982 | } |
| 983 | |
| 984 | IdentifierInfo *Name = Attr.getParameterName(); |
| 985 | if (!Name) { |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 986 | S.Diag(Attr.getLoc(), diag::err_attribute_missing_parameter_name); |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 987 | return; |
| 988 | } |
| 989 | const char *Str = Name->getName(); |
| 990 | unsigned Len = Name->getLength(); |
| 991 | |
| 992 | // Normalize the attribute name, __foo__ becomes foo. |
| 993 | if (Len > 4 && Str[0] == '_' && Str[1] == '_' && |
| 994 | Str[Len - 2] == '_' && Str[Len - 1] == '_') { |
| 995 | Str += 2; |
| 996 | Len -= 4; |
| 997 | } |
| 998 | |
| 999 | unsigned DestWidth = 0; |
| 1000 | bool IntegerMode = true; |
| 1001 | switch (Len) { |
| 1002 | case 2: |
| 1003 | if (!memcmp(Str, "QI", 2)) { DestWidth = 8; break; } |
| 1004 | if (!memcmp(Str, "HI", 2)) { DestWidth = 16; break; } |
| 1005 | if (!memcmp(Str, "SI", 2)) { DestWidth = 32; break; } |
| 1006 | if (!memcmp(Str, "DI", 2)) { DestWidth = 64; break; } |
| 1007 | if (!memcmp(Str, "TI", 2)) { DestWidth = 128; break; } |
| 1008 | if (!memcmp(Str, "SF", 2)) { DestWidth = 32; IntegerMode = false; break; } |
| 1009 | if (!memcmp(Str, "DF", 2)) { DestWidth = 64; IntegerMode = false; break; } |
| 1010 | if (!memcmp(Str, "XF", 2)) { DestWidth = 96; IntegerMode = false; break; } |
| 1011 | if (!memcmp(Str, "TF", 2)) { DestWidth = 128; IntegerMode = false; break; } |
| 1012 | break; |
| 1013 | case 4: |
| 1014 | // FIXME: glibc uses 'word' to define register_t; this is narrower than a |
| 1015 | // pointer on PIC16 and other embedded platforms. |
| 1016 | if (!memcmp(Str, "word", 4)) |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 1017 | DestWidth = S.Context.Target.getPointerWidth(0); |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1018 | if (!memcmp(Str, "byte", 4)) |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 1019 | DestWidth = S.Context.Target.getCharWidth(); |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1020 | break; |
| 1021 | case 7: |
| 1022 | if (!memcmp(Str, "pointer", 7)) |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 1023 | DestWidth = S.Context.Target.getPointerWidth(0); |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1024 | break; |
| 1025 | } |
| 1026 | |
| 1027 | QualType OldTy; |
| 1028 | if (TypedefDecl *TD = dyn_cast<TypedefDecl>(D)) |
| 1029 | OldTy = TD->getUnderlyingType(); |
| 1030 | else if (ValueDecl *VD = dyn_cast<ValueDecl>(D)) |
| 1031 | OldTy = VD->getType(); |
| 1032 | else { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 1033 | S.Diag(D->getLocation(), diag::err_attr_wrong_decl) |
| 1034 | << "mode" << SourceRange(Attr.getLoc(), Attr.getLoc()); |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1035 | return; |
| 1036 | } |
| 1037 | |
| 1038 | // FIXME: Need proper fixed-width types |
| 1039 | QualType NewTy; |
| 1040 | switch (DestWidth) { |
| 1041 | case 0: |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 1042 | S.Diag(Attr.getLoc(), diag::err_unknown_machine_mode) << Name; |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1043 | return; |
| 1044 | default: |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 1045 | S.Diag(Attr.getLoc(), diag::err_unsupported_machine_mode) << Name; |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1046 | return; |
| 1047 | case 8: |
| 1048 | assert(IntegerMode); |
| 1049 | if (OldTy->isSignedIntegerType()) |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 1050 | NewTy = S.Context.SignedCharTy; |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1051 | else |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 1052 | NewTy = S.Context.UnsignedCharTy; |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1053 | break; |
| 1054 | case 16: |
| 1055 | assert(IntegerMode); |
| 1056 | if (OldTy->isSignedIntegerType()) |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 1057 | NewTy = S.Context.ShortTy; |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1058 | else |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 1059 | NewTy = S.Context.UnsignedShortTy; |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1060 | break; |
| 1061 | case 32: |
| 1062 | if (!IntegerMode) |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 1063 | NewTy = S.Context.FloatTy; |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1064 | else if (OldTy->isSignedIntegerType()) |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 1065 | NewTy = S.Context.IntTy; |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1066 | else |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 1067 | NewTy = S.Context.UnsignedIntTy; |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1068 | break; |
| 1069 | case 64: |
| 1070 | if (!IntegerMode) |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 1071 | NewTy = S.Context.DoubleTy; |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1072 | else if (OldTy->isSignedIntegerType()) |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 1073 | NewTy = S.Context.LongLongTy; |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1074 | else |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 1075 | NewTy = S.Context.UnsignedLongLongTy; |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1076 | break; |
| 1077 | } |
| 1078 | |
| 1079 | if (!OldTy->getAsBuiltinType()) |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 1080 | S.Diag(Attr.getLoc(), diag::err_mode_not_primitive); |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1081 | else if (!(IntegerMode && OldTy->isIntegerType()) && |
| 1082 | !(!IntegerMode && OldTy->isFloatingType())) { |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 1083 | S.Diag(Attr.getLoc(), diag::err_mode_wrong_type); |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1084 | } |
| 1085 | |
| 1086 | // Install the new type. |
| 1087 | if (TypedefDecl *TD = dyn_cast<TypedefDecl>(D)) |
| 1088 | TD->setUnderlyingType(NewTy); |
| 1089 | else |
| 1090 | cast<ValueDecl>(D)->setType(NewTy); |
| 1091 | } |
Chris Lattner | 0744e5f | 2008-06-29 00:23:49 +0000 | [diff] [blame] | 1092 | |
| 1093 | //===----------------------------------------------------------------------===// |
| 1094 | // Top Level Sema Entry Points |
| 1095 | //===----------------------------------------------------------------------===// |
| 1096 | |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 1097 | /// HandleDeclAttribute - Apply the specific attribute to the specified decl if |
| 1098 | /// the attribute applies to decls. If the attribute is a type attribute, just |
| 1099 | /// silently ignore it. |
| 1100 | static void ProcessDeclAttribute(Decl *D, const AttributeList &Attr, Sema &S) { |
| 1101 | switch (Attr.getKind()) { |
Daniel Dunbar | 3068ae0 | 2008-07-31 22:40:48 +0000 | [diff] [blame] | 1102 | case AttributeList::AT_IBOutlet: HandleIBOutletAttr (D, Attr, S); break; |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 1103 | case AttributeList::AT_address_space: |
| 1104 | // Ignore this, this is a type attribute, handled by ProcessTypeAttributes. |
| 1105 | break; |
Daniel Dunbar | 3068ae0 | 2008-07-31 22:40:48 +0000 | [diff] [blame] | 1106 | case AttributeList::AT_alias: HandleAliasAttr (D, Attr, S); break; |
| 1107 | case AttributeList::AT_aligned: HandleAlignedAttr (D, Attr, S); break; |
Daniel Dunbar | af668b0 | 2008-10-28 00:17:57 +0000 | [diff] [blame] | 1108 | case AttributeList::AT_always_inline: |
| 1109 | HandleAlwaysInlineAttr (D, Attr, S); break; |
Daniel Dunbar | 3068ae0 | 2008-07-31 22:40:48 +0000 | [diff] [blame] | 1110 | case AttributeList::AT_annotate: HandleAnnotateAttr (D, Attr, S); break; |
| 1111 | case AttributeList::AT_constructor: HandleConstructorAttr(D, Attr, S); break; |
| 1112 | case AttributeList::AT_deprecated: HandleDeprecatedAttr(D, Attr, S); break; |
| 1113 | case AttributeList::AT_destructor: HandleDestructorAttr(D, Attr, S); break; |
| 1114 | case AttributeList::AT_dllexport: HandleDLLExportAttr (D, Attr, S); break; |
| 1115 | case AttributeList::AT_dllimport: HandleDLLImportAttr (D, Attr, S); break; |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 1116 | case AttributeList::AT_ext_vector_type: |
| 1117 | HandleExtVectorTypeAttr(D, Attr, S); |
| 1118 | break; |
Daniel Dunbar | 3068ae0 | 2008-07-31 22:40:48 +0000 | [diff] [blame] | 1119 | case AttributeList::AT_fastcall: HandleFastCallAttr (D, Attr, S); break; |
| 1120 | case AttributeList::AT_format: HandleFormatAttr (D, Attr, S); break; |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 1121 | case AttributeList::AT_mode: HandleModeAttr (D, Attr, S); break; |
Daniel Dunbar | 3068ae0 | 2008-07-31 22:40:48 +0000 | [diff] [blame] | 1122 | case AttributeList::AT_nonnull: HandleNonNullAttr (D, Attr, S); break; |
| 1123 | case AttributeList::AT_noreturn: HandleNoReturnAttr (D, Attr, S); break; |
| 1124 | case AttributeList::AT_nothrow: HandleNothrowAttr (D, Attr, S); break; |
| 1125 | case AttributeList::AT_packed: HandlePackedAttr (D, Attr, S); break; |
| 1126 | case AttributeList::AT_stdcall: HandleStdCallAttr (D, Attr, S); break; |
| 1127 | case AttributeList::AT_unused: HandleUnusedAttr (D, Attr, S); break; |
| 1128 | case AttributeList::AT_vector_size: HandleVectorSizeAttr(D, Attr, S); break; |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 1129 | case AttributeList::AT_visibility: HandleVisibilityAttr(D, Attr, S); break; |
| 1130 | case AttributeList::AT_weak: HandleWeakAttr (D, Attr, S); break; |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 1131 | case AttributeList::AT_transparent_union: |
| 1132 | HandleTransparentUnionAttr(D, Attr, S); |
| 1133 | break; |
Anders Carlsson | aa0d25b | 2008-08-23 23:22:21 +0000 | [diff] [blame] | 1134 | case AttributeList::AT_objc_gc: HandleObjCGCAttr (D, Attr, S); break; |
Steve Naroff | 9eae576 | 2008-09-18 16:44:58 +0000 | [diff] [blame] | 1135 | case AttributeList::AT_blocks: HandleBlocksAttr (D, Attr, S); break; |
Anders Carlsson | 7709182 | 2008-10-05 18:05:59 +0000 | [diff] [blame] | 1136 | case AttributeList::AT_sentinel: HandleSentinelAttr (D, Attr, S); break; |
Anders Carlsson | 232eb7d | 2008-10-05 23:32:53 +0000 | [diff] [blame] | 1137 | case AttributeList::AT_const: HandleConstAttr (D, Attr, S); break; |
| 1138 | case AttributeList::AT_pure: HandlePureAttr (D, Attr, S); break; |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 1139 | default: |
| 1140 | #if 0 |
| 1141 | // TODO: when we have the full set of attributes, warn about unknown ones. |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 1142 | S.Diag(Attr->getLoc(), diag::warn_attribute_ignored) |
| 1143 | << Attr->getName()->getName(); |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 1144 | #endif |
| 1145 | break; |
| 1146 | } |
| 1147 | } |
| 1148 | |
| 1149 | /// ProcessDeclAttributeList - Apply all the decl attributes in the specified |
| 1150 | /// attribute list to the specified decl, ignoring any type attributes. |
| 1151 | void Sema::ProcessDeclAttributeList(Decl *D, const AttributeList *AttrList) { |
| 1152 | while (AttrList) { |
| 1153 | ProcessDeclAttribute(D, *AttrList, *this); |
| 1154 | AttrList = AttrList->getNext(); |
| 1155 | } |
| 1156 | } |
| 1157 | |
| 1158 | |
Chris Lattner | 0744e5f | 2008-06-29 00:23:49 +0000 | [diff] [blame] | 1159 | /// ProcessDeclAttributes - Given a declarator (PD) with attributes indicated in |
| 1160 | /// it, apply them to D. This is a bit tricky because PD can have attributes |
| 1161 | /// specified in many different places, and we need to find and apply them all. |
| 1162 | void Sema::ProcessDeclAttributes(Decl *D, const Declarator &PD) { |
| 1163 | // Apply decl attributes from the DeclSpec if present. |
| 1164 | if (const AttributeList *Attrs = PD.getDeclSpec().getAttributes()) |
| 1165 | ProcessDeclAttributeList(D, Attrs); |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 1166 | |
Chris Lattner | 0744e5f | 2008-06-29 00:23:49 +0000 | [diff] [blame] | 1167 | // Walk the declarator structure, applying decl attributes that were in a type |
| 1168 | // position to the decl itself. This handles cases like: |
| 1169 | // int *__attr__(x)** D; |
| 1170 | // when X is a decl attribute. |
| 1171 | for (unsigned i = 0, e = PD.getNumTypeObjects(); i != e; ++i) |
| 1172 | if (const AttributeList *Attrs = PD.getTypeObject(i).getAttrs()) |
| 1173 | ProcessDeclAttributeList(D, Attrs); |
| 1174 | |
| 1175 | // Finally, apply any attributes on the decl itself. |
| 1176 | if (const AttributeList *Attrs = PD.getAttributes()) |
| 1177 | ProcessDeclAttributeList(D, Attrs); |
| 1178 | } |
| 1179 | |