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" |
Anton Korobeynikov | 82d0a41 | 2010-01-10 12:58:08 +0000 | [diff] [blame] | 15 | #include "TargetAttributesSema.h" |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 16 | #include "clang/AST/ASTContext.h" |
Daniel Dunbar | acc5f3e | 2008-08-11 06:23:49 +0000 | [diff] [blame] | 17 | #include "clang/AST/DeclObjC.h" |
| 18 | #include "clang/AST/Expr.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" |
Chris Lattner | 797c3c4 | 2009-08-10 19:03:04 +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 | |
Ted Kremenek | a18d7d8 | 2009-08-14 20:49:40 +0000 | [diff] [blame] | 28 | static const FunctionType *getFunctionType(const Decl *d, |
| 29 | bool blocksToo = true) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 30 | QualType Ty; |
Ted Kremenek | a18d7d8 | 2009-08-14 20:49:40 +0000 | [diff] [blame] | 31 | if (const ValueDecl *decl = dyn_cast<ValueDecl>(d)) |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 32 | Ty = decl->getType(); |
Ted Kremenek | a18d7d8 | 2009-08-14 20:49:40 +0000 | [diff] [blame] | 33 | else if (const FieldDecl *decl = dyn_cast<FieldDecl>(d)) |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 34 | Ty = decl->getType(); |
Ted Kremenek | a18d7d8 | 2009-08-14 20:49:40 +0000 | [diff] [blame] | 35 | else if (const TypedefDecl* decl = dyn_cast<TypedefDecl>(d)) |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 36 | Ty = decl->getUnderlyingType(); |
| 37 | else |
| 38 | return 0; |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 39 | |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 40 | if (Ty->isFunctionPointerType()) |
Ted Kremenek | 6217b80 | 2009-07-29 21:53:49 +0000 | [diff] [blame] | 41 | Ty = Ty->getAs<PointerType>()->getPointeeType(); |
Fariborz Jahanian | 755f9d2 | 2009-05-18 17:39:25 +0000 | [diff] [blame] | 42 | else if (blocksToo && Ty->isBlockPointerType()) |
Ted Kremenek | 6217b80 | 2009-07-29 21:53:49 +0000 | [diff] [blame] | 43 | Ty = Ty->getAs<BlockPointerType>()->getPointeeType(); |
Daniel Dunbar | d3f2c10 | 2008-10-19 02:04:16 +0000 | [diff] [blame] | 44 | |
John McCall | 183700f | 2009-09-21 23:43:11 +0000 | [diff] [blame] | 45 | return Ty->getAs<FunctionType>(); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 46 | } |
| 47 | |
Daniel Dunbar | 3568249 | 2008-09-26 04:12:28 +0000 | [diff] [blame] | 48 | // FIXME: We should provide an abstraction around a method or function |
| 49 | // to provide the following bits of information. |
| 50 | |
Nuno Lopes | d20254f | 2009-12-20 23:11:08 +0000 | [diff] [blame] | 51 | /// isFunction - Return true if the given decl has function |
Ted Kremenek | a18d7d8 | 2009-08-14 20:49:40 +0000 | [diff] [blame] | 52 | /// type (function or function-typed variable). |
| 53 | static bool isFunction(const Decl *d) { |
| 54 | return getFunctionType(d, false) != NULL; |
| 55 | } |
| 56 | |
| 57 | /// isFunctionOrMethod - Return true if the given decl has function |
Daniel Dunbar | d3f2c10 | 2008-10-19 02:04:16 +0000 | [diff] [blame] | 58 | /// type (function or function-typed variable) or an Objective-C |
| 59 | /// method. |
Ted Kremenek | a18d7d8 | 2009-08-14 20:49:40 +0000 | [diff] [blame] | 60 | static bool isFunctionOrMethod(const Decl *d) { |
| 61 | return isFunction(d)|| isa<ObjCMethodDecl>(d); |
Daniel Dunbar | 3568249 | 2008-09-26 04:12:28 +0000 | [diff] [blame] | 62 | } |
| 63 | |
Fariborz Jahanian | 620d89c | 2009-05-15 23:15:03 +0000 | [diff] [blame] | 64 | /// isFunctionOrMethodOrBlock - Return true if the given decl has function |
| 65 | /// type (function or function-typed variable) or an Objective-C |
| 66 | /// method or a block. |
Ted Kremenek | a18d7d8 | 2009-08-14 20:49:40 +0000 | [diff] [blame] | 67 | static bool isFunctionOrMethodOrBlock(const Decl *d) { |
Fariborz Jahanian | 620d89c | 2009-05-15 23:15:03 +0000 | [diff] [blame] | 68 | if (isFunctionOrMethod(d)) |
| 69 | return true; |
| 70 | // check for block is more involved. |
| 71 | if (const VarDecl *V = dyn_cast<VarDecl>(d)) { |
| 72 | QualType Ty = V->getType(); |
| 73 | return Ty->isBlockPointerType(); |
| 74 | } |
Fariborz Jahanian | d66f22d | 2009-05-19 17:08:59 +0000 | [diff] [blame] | 75 | return isa<BlockDecl>(d); |
Fariborz Jahanian | 620d89c | 2009-05-15 23:15:03 +0000 | [diff] [blame] | 76 | } |
| 77 | |
Daniel Dunbar | d3f2c10 | 2008-10-19 02:04:16 +0000 | [diff] [blame] | 78 | /// hasFunctionProto - Return true if the given decl has a argument |
| 79 | /// information. This decl should have already passed |
Fariborz Jahanian | 620d89c | 2009-05-15 23:15:03 +0000 | [diff] [blame] | 80 | /// isFunctionOrMethod or isFunctionOrMethodOrBlock. |
Ted Kremenek | a18d7d8 | 2009-08-14 20:49:40 +0000 | [diff] [blame] | 81 | static bool hasFunctionProto(const Decl *d) { |
Fariborz Jahanian | 620d89c | 2009-05-15 23:15:03 +0000 | [diff] [blame] | 82 | if (const FunctionType *FnTy = getFunctionType(d)) |
Douglas Gregor | 72564e7 | 2009-02-26 23:50:07 +0000 | [diff] [blame] | 83 | return isa<FunctionProtoType>(FnTy); |
Fariborz Jahanian | 620d89c | 2009-05-15 23:15:03 +0000 | [diff] [blame] | 84 | else { |
Fariborz Jahanian | d66f22d | 2009-05-19 17:08:59 +0000 | [diff] [blame] | 85 | assert(isa<ObjCMethodDecl>(d) || isa<BlockDecl>(d)); |
Daniel Dunbar | d3f2c10 | 2008-10-19 02:04:16 +0000 | [diff] [blame] | 86 | return true; |
| 87 | } |
| 88 | } |
| 89 | |
| 90 | /// getFunctionOrMethodNumArgs - Return number of function or method |
| 91 | /// arguments. It is an error to call this on a K&R function (use |
| 92 | /// hasFunctionProto first). |
Ted Kremenek | a18d7d8 | 2009-08-14 20:49:40 +0000 | [diff] [blame] | 93 | static unsigned getFunctionOrMethodNumArgs(const Decl *d) { |
Chris Lattner | 89951a8 | 2009-02-20 18:43:26 +0000 | [diff] [blame] | 94 | if (const FunctionType *FnTy = getFunctionType(d)) |
Douglas Gregor | 72564e7 | 2009-02-26 23:50:07 +0000 | [diff] [blame] | 95 | return cast<FunctionProtoType>(FnTy)->getNumArgs(); |
Fariborz Jahanian | d66f22d | 2009-05-19 17:08:59 +0000 | [diff] [blame] | 96 | if (const BlockDecl *BD = dyn_cast<BlockDecl>(d)) |
| 97 | return BD->getNumParams(); |
Chris Lattner | 89951a8 | 2009-02-20 18:43:26 +0000 | [diff] [blame] | 98 | return cast<ObjCMethodDecl>(d)->param_size(); |
Daniel Dunbar | 3568249 | 2008-09-26 04:12:28 +0000 | [diff] [blame] | 99 | } |
| 100 | |
Ted Kremenek | a18d7d8 | 2009-08-14 20:49:40 +0000 | [diff] [blame] | 101 | static QualType getFunctionOrMethodArgType(const Decl *d, unsigned Idx) { |
Chris Lattner | 89951a8 | 2009-02-20 18:43:26 +0000 | [diff] [blame] | 102 | if (const FunctionType *FnTy = getFunctionType(d)) |
Douglas Gregor | 72564e7 | 2009-02-26 23:50:07 +0000 | [diff] [blame] | 103 | return cast<FunctionProtoType>(FnTy)->getArgType(Idx); |
Fariborz Jahanian | d66f22d | 2009-05-19 17:08:59 +0000 | [diff] [blame] | 104 | if (const BlockDecl *BD = dyn_cast<BlockDecl>(d)) |
| 105 | return BD->getParamDecl(Idx)->getType(); |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 106 | |
Chris Lattner | 89951a8 | 2009-02-20 18:43:26 +0000 | [diff] [blame] | 107 | return cast<ObjCMethodDecl>(d)->param_begin()[Idx]->getType(); |
Daniel Dunbar | 3568249 | 2008-09-26 04:12:28 +0000 | [diff] [blame] | 108 | } |
| 109 | |
Ted Kremenek | a18d7d8 | 2009-08-14 20:49:40 +0000 | [diff] [blame] | 110 | static QualType getFunctionOrMethodResultType(const Decl *d) { |
Fariborz Jahanian | 5b16092 | 2009-05-20 17:41:43 +0000 | [diff] [blame] | 111 | if (const FunctionType *FnTy = getFunctionType(d)) |
| 112 | return cast<FunctionProtoType>(FnTy)->getResultType(); |
| 113 | return cast<ObjCMethodDecl>(d)->getResultType(); |
| 114 | } |
| 115 | |
Ted Kremenek | a18d7d8 | 2009-08-14 20:49:40 +0000 | [diff] [blame] | 116 | static bool isFunctionOrMethodVariadic(const Decl *d) { |
Daniel Dunbar | d3f2c10 | 2008-10-19 02:04:16 +0000 | [diff] [blame] | 117 | if (const FunctionType *FnTy = getFunctionType(d)) { |
Douglas Gregor | 72564e7 | 2009-02-26 23:50:07 +0000 | [diff] [blame] | 118 | const FunctionProtoType *proto = cast<FunctionProtoType>(FnTy); |
Daniel Dunbar | 3568249 | 2008-09-26 04:12:28 +0000 | [diff] [blame] | 119 | return proto->isVariadic(); |
Fariborz Jahanian | d66f22d | 2009-05-19 17:08:59 +0000 | [diff] [blame] | 120 | } else if (const BlockDecl *BD = dyn_cast<BlockDecl>(d)) |
| 121 | return BD->IsVariadic(); |
| 122 | else { |
Daniel Dunbar | 3568249 | 2008-09-26 04:12:28 +0000 | [diff] [blame] | 123 | return cast<ObjCMethodDecl>(d)->isVariadic(); |
| 124 | } |
| 125 | } |
| 126 | |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 127 | static inline bool isNSStringType(QualType T, ASTContext &Ctx) { |
John McCall | 183700f | 2009-09-21 23:43:11 +0000 | [diff] [blame] | 128 | const ObjCObjectPointerType *PT = T->getAs<ObjCObjectPointerType>(); |
Chris Lattner | b77792e | 2008-07-26 22:17:49 +0000 | [diff] [blame] | 129 | if (!PT) |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 130 | return false; |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 131 | |
John McCall | 183700f | 2009-09-21 23:43:11 +0000 | [diff] [blame] | 132 | const ObjCInterfaceType *ClsT =PT->getPointeeType()->getAs<ObjCInterfaceType>(); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 133 | if (!ClsT) |
| 134 | return false; |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 135 | |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 136 | IdentifierInfo* ClsName = ClsT->getDecl()->getIdentifier(); |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 137 | |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 138 | // FIXME: Should we walk the chain of classes? |
| 139 | return ClsName == &Ctx.Idents.get("NSString") || |
| 140 | ClsName == &Ctx.Idents.get("NSMutableString"); |
| 141 | } |
| 142 | |
Daniel Dunbar | 085e8f7 | 2008-09-26 03:32:58 +0000 | [diff] [blame] | 143 | static inline bool isCFStringType(QualType T, ASTContext &Ctx) { |
Ted Kremenek | 6217b80 | 2009-07-29 21:53:49 +0000 | [diff] [blame] | 144 | const PointerType *PT = T->getAs<PointerType>(); |
Daniel Dunbar | 085e8f7 | 2008-09-26 03:32:58 +0000 | [diff] [blame] | 145 | if (!PT) |
| 146 | return false; |
| 147 | |
Ted Kremenek | 6217b80 | 2009-07-29 21:53:49 +0000 | [diff] [blame] | 148 | const RecordType *RT = PT->getPointeeType()->getAs<RecordType>(); |
Daniel Dunbar | 085e8f7 | 2008-09-26 03:32:58 +0000 | [diff] [blame] | 149 | if (!RT) |
| 150 | return false; |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 151 | |
Daniel Dunbar | 085e8f7 | 2008-09-26 03:32:58 +0000 | [diff] [blame] | 152 | const RecordDecl *RD = RT->getDecl(); |
| 153 | if (RD->getTagKind() != TagDecl::TK_struct) |
| 154 | return false; |
| 155 | |
| 156 | return RD->getIdentifier() == &Ctx.Idents.get("__CFString"); |
| 157 | } |
| 158 | |
Chris Lattner | e5c5ee1 | 2008-06-29 00:16:31 +0000 | [diff] [blame] | 159 | //===----------------------------------------------------------------------===// |
Chris Lattner | e5c5ee1 | 2008-06-29 00:16:31 +0000 | [diff] [blame] | 160 | // Attribute Implementations |
| 161 | //===----------------------------------------------------------------------===// |
| 162 | |
Daniel Dunbar | 3068ae0 | 2008-07-31 22:40:48 +0000 | [diff] [blame] | 163 | // FIXME: All this manual attribute parsing code is gross. At the |
| 164 | // least add some helper functions to check most argument patterns (# |
| 165 | // and types of args). |
| 166 | |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 167 | static void HandleExtVectorTypeAttr(Scope *scope, Decl *d, |
Douglas Gregor | 9cdda0c | 2009-06-17 21:51:59 +0000 | [diff] [blame] | 168 | const AttributeList &Attr, Sema &S) { |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 169 | TypedefDecl *tDecl = dyn_cast<TypedefDecl>(d); |
| 170 | if (tDecl == 0) { |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 171 | S.Diag(Attr.getLoc(), diag::err_typecheck_ext_vector_not_typedef); |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 172 | return; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 173 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 174 | |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 175 | QualType curType = tDecl->getUnderlyingType(); |
Douglas Gregor | 9cdda0c | 2009-06-17 21:51:59 +0000 | [diff] [blame] | 176 | |
| 177 | Expr *sizeExpr; |
| 178 | |
| 179 | // Special case where the argument is a template id. |
| 180 | if (Attr.getParameterName()) { |
John McCall | f7a1a74 | 2009-11-24 19:00:30 +0000 | [diff] [blame] | 181 | CXXScopeSpec SS; |
| 182 | UnqualifiedId id; |
| 183 | id.setIdentifier(Attr.getParameterName(), Attr.getLoc()); |
| 184 | sizeExpr = S.ActOnIdExpression(scope, SS, id, false, false).takeAs<Expr>(); |
Douglas Gregor | 9cdda0c | 2009-06-17 21:51:59 +0000 | [diff] [blame] | 185 | } else { |
| 186 | // check the attribute arguments. |
| 187 | if (Attr.getNumArgs() != 1) { |
| 188 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; |
| 189 | return; |
| 190 | } |
| 191 | sizeExpr = static_cast<Expr *>(Attr.getArg(0)); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 192 | } |
Douglas Gregor | 9cdda0c | 2009-06-17 21:51:59 +0000 | [diff] [blame] | 193 | |
| 194 | // Instantiate/Install the vector type, and let Sema build the type for us. |
| 195 | // This will run the reguired checks. |
| 196 | QualType T = S.BuildExtVectorType(curType, S.Owned(sizeExpr), Attr.getLoc()); |
| 197 | if (!T.isNull()) { |
John McCall | ba6a9bd | 2009-10-24 08:00:42 +0000 | [diff] [blame] | 198 | // FIXME: preserve the old source info. |
John McCall | a93c934 | 2009-12-07 02:54:59 +0000 | [diff] [blame] | 199 | tDecl->setTypeSourceInfo(S.Context.getTrivialTypeSourceInfo(T)); |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 200 | |
Douglas Gregor | 9cdda0c | 2009-06-17 21:51:59 +0000 | [diff] [blame] | 201 | // Remember this typedef decl, we will need it later for diagnostics. |
| 202 | S.ExtVectorDecls.push_back(tDecl); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 203 | } |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 204 | } |
| 205 | |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 206 | static void HandlePackedAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 207 | // check the attribute arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 208 | if (Attr.getNumArgs() > 0) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 209 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 210 | return; |
| 211 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 212 | |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 213 | if (TagDecl *TD = dyn_cast<TagDecl>(d)) |
Anders Carlsson | a860e75 | 2009-08-08 18:23:56 +0000 | [diff] [blame] | 214 | TD->addAttr(::new (S.Context) PackedAttr); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 215 | else if (FieldDecl *FD = dyn_cast<FieldDecl>(d)) { |
| 216 | // If the alignment is less than or equal to 8 bits, the packed attribute |
| 217 | // has no effect. |
| 218 | if (!FD->getType()->isIncompleteType() && |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 219 | S.Context.getTypeAlign(FD->getType()) <= 8) |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 220 | S.Diag(Attr.getLoc(), diag::warn_attribute_ignored_for_field_of_type) |
Chris Lattner | 08631c5 | 2008-11-23 21:45:46 +0000 | [diff] [blame] | 221 | << Attr.getName() << FD->getType(); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 222 | else |
Anders Carlsson | a860e75 | 2009-08-08 18:23:56 +0000 | [diff] [blame] | 223 | FD->addAttr(::new (S.Context) PackedAttr); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 224 | } else |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 225 | S.Diag(Attr.getLoc(), diag::warn_attribute_ignored) << Attr.getName(); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 226 | } |
| 227 | |
Ted Kremenek | 96329d4 | 2008-07-15 22:26:48 +0000 | [diff] [blame] | 228 | static void HandleIBOutletAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
| 229 | // check the attribute arguments. |
| 230 | if (Attr.getNumArgs() > 0) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 231 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
Ted Kremenek | 96329d4 | 2008-07-15 22:26:48 +0000 | [diff] [blame] | 232 | return; |
| 233 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 234 | |
Ted Kremenek | 96329d4 | 2008-07-15 22:26:48 +0000 | [diff] [blame] | 235 | // The IBOutlet attribute only applies to instance variables of Objective-C |
| 236 | // classes. |
Ted Kremenek | 3274260 | 2009-02-17 22:20:20 +0000 | [diff] [blame] | 237 | if (isa<ObjCIvarDecl>(d) || isa<ObjCPropertyDecl>(d)) |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 238 | d->addAttr(::new (S.Context) IBOutletAttr()); |
Ted Kremenek | 96329d4 | 2008-07-15 22:26:48 +0000 | [diff] [blame] | 239 | else |
Ted Kremenek | 3274260 | 2009-02-17 22:20:20 +0000 | [diff] [blame] | 240 | S.Diag(Attr.getLoc(), diag::err_attribute_iboutlet); |
Ted Kremenek | 96329d4 | 2008-07-15 22:26:48 +0000 | [diff] [blame] | 241 | } |
| 242 | |
Ted Kremenek | eb2b2a3 | 2008-07-21 21:53:04 +0000 | [diff] [blame] | 243 | static void HandleNonNullAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 244 | // GCC ignores the nonnull attribute on K&R style function prototypes, so we |
| 245 | // ignore it as well |
Daniel Dunbar | d3f2c10 | 2008-10-19 02:04:16 +0000 | [diff] [blame] | 246 | if (!isFunctionOrMethod(d) || !hasFunctionProto(d)) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 247 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) |
Ted Kremenek | 5dc53c9 | 2009-05-13 21:07:32 +0000 | [diff] [blame] | 248 | << Attr.getName() << 0 /*function*/; |
Ted Kremenek | eb2b2a3 | 2008-07-21 21:53:04 +0000 | [diff] [blame] | 249 | return; |
| 250 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 251 | |
Daniel Dunbar | d3f2c10 | 2008-10-19 02:04:16 +0000 | [diff] [blame] | 252 | unsigned NumArgs = getFunctionOrMethodNumArgs(d); |
Ted Kremenek | eb2b2a3 | 2008-07-21 21:53:04 +0000 | [diff] [blame] | 253 | |
| 254 | // The nonnull attribute only applies to pointers. |
| 255 | llvm::SmallVector<unsigned, 10> NonNullArgs; |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 256 | |
Ted Kremenek | eb2b2a3 | 2008-07-21 21:53:04 +0000 | [diff] [blame] | 257 | for (AttributeList::arg_iterator I=Attr.arg_begin(), |
| 258 | E=Attr.arg_end(); I!=E; ++I) { |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 259 | |
| 260 | |
Ted Kremenek | eb2b2a3 | 2008-07-21 21:53:04 +0000 | [diff] [blame] | 261 | // The argument must be an integer constant expression. |
Ted Kremenek | f5e8834 | 2008-12-04 19:38:33 +0000 | [diff] [blame] | 262 | Expr *Ex = static_cast<Expr *>(*I); |
Ted Kremenek | eb2b2a3 | 2008-07-21 21:53:04 +0000 | [diff] [blame] | 263 | llvm::APSInt ArgNum(32); |
| 264 | if (!Ex->isIntegerConstantExpr(ArgNum, S.Context)) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 265 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_not_int) |
| 266 | << "nonnull" << Ex->getSourceRange(); |
Ted Kremenek | eb2b2a3 | 2008-07-21 21:53:04 +0000 | [diff] [blame] | 267 | return; |
| 268 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 269 | |
Ted Kremenek | eb2b2a3 | 2008-07-21 21:53:04 +0000 | [diff] [blame] | 270 | unsigned x = (unsigned) ArgNum.getZExtValue(); |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 271 | |
Ted Kremenek | eb2b2a3 | 2008-07-21 21:53:04 +0000 | [diff] [blame] | 272 | if (x < 1 || x > NumArgs) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 273 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_out_of_bounds) |
Chris Lattner | 30bc965 | 2008-11-19 07:22:31 +0000 | [diff] [blame] | 274 | << "nonnull" << I.getArgNum() << Ex->getSourceRange(); |
Ted Kremenek | eb2b2a3 | 2008-07-21 21:53:04 +0000 | [diff] [blame] | 275 | return; |
| 276 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 277 | |
Ted Kremenek | 465172f | 2008-07-21 22:09:15 +0000 | [diff] [blame] | 278 | --x; |
Ted Kremenek | eb2b2a3 | 2008-07-21 21:53:04 +0000 | [diff] [blame] | 279 | |
| 280 | // Is the function argument a pointer type? |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 281 | QualType T = getFunctionOrMethodArgType(d, x); |
Ted Kremenek | dbfe99e | 2009-07-15 23:23:54 +0000 | [diff] [blame] | 282 | if (!T->isAnyPointerType() && !T->isBlockPointerType()) { |
Ted Kremenek | eb2b2a3 | 2008-07-21 21:53:04 +0000 | [diff] [blame] | 283 | // FIXME: Should also highlight argument in decl. |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 284 | S.Diag(Attr.getLoc(), diag::err_nonnull_pointers_only) |
| 285 | << "nonnull" << Ex->getSourceRange(); |
Ted Kremenek | 7fb43c1 | 2008-09-01 19:57:52 +0000 | [diff] [blame] | 286 | continue; |
Ted Kremenek | eb2b2a3 | 2008-07-21 21:53:04 +0000 | [diff] [blame] | 287 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 288 | |
Ted Kremenek | eb2b2a3 | 2008-07-21 21:53:04 +0000 | [diff] [blame] | 289 | NonNullArgs.push_back(x); |
| 290 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 291 | |
| 292 | // If no arguments were specified to __attribute__((nonnull)) then all pointer |
| 293 | // arguments have a nonnull attribute. |
Ted Kremenek | 7fb43c1 | 2008-09-01 19:57:52 +0000 | [diff] [blame] | 294 | if (NonNullArgs.empty()) { |
Ted Kremenek | 46bbaca | 2008-11-18 06:52:58 +0000 | [diff] [blame] | 295 | for (unsigned I = 0, E = getFunctionOrMethodNumArgs(d); I != E; ++I) { |
| 296 | QualType T = getFunctionOrMethodArgType(d, I); |
Ted Kremenek | dbfe99e | 2009-07-15 23:23:54 +0000 | [diff] [blame] | 297 | if (T->isAnyPointerType() || T->isBlockPointerType()) |
Daniel Dunbar | d3f2c10 | 2008-10-19 02:04:16 +0000 | [diff] [blame] | 298 | NonNullArgs.push_back(I); |
Ted Kremenek | 46bbaca | 2008-11-18 06:52:58 +0000 | [diff] [blame] | 299 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 300 | |
Ted Kremenek | 7fb43c1 | 2008-09-01 19:57:52 +0000 | [diff] [blame] | 301 | if (NonNullArgs.empty()) { |
| 302 | S.Diag(Attr.getLoc(), diag::warn_attribute_nonnull_no_pointers); |
| 303 | return; |
| 304 | } |
Ted Kremenek | eb2b2a3 | 2008-07-21 21:53:04 +0000 | [diff] [blame] | 305 | } |
Ted Kremenek | 7fb43c1 | 2008-09-01 19:57:52 +0000 | [diff] [blame] | 306 | |
| 307 | unsigned* start = &NonNullArgs[0]; |
| 308 | unsigned size = NonNullArgs.size(); |
| 309 | std::sort(start, start + size); |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 310 | d->addAttr(::new (S.Context) NonNullAttr(start, size)); |
Ted Kremenek | eb2b2a3 | 2008-07-21 21:53:04 +0000 | [diff] [blame] | 311 | } |
| 312 | |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 313 | static void HandleAliasAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 314 | // check the attribute arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 315 | if (Attr.getNumArgs() != 1) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 316 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 317 | return; |
| 318 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 319 | |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 320 | Expr *Arg = static_cast<Expr*>(Attr.getArg(0)); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 321 | Arg = Arg->IgnoreParenCasts(); |
| 322 | StringLiteral *Str = dyn_cast<StringLiteral>(Arg); |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 323 | |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 324 | if (Str == 0 || Str->isWide()) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 325 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_string) |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 326 | << "alias" << 1; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 327 | return; |
| 328 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 329 | |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 330 | // FIXME: check if target symbol exists in current file |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 331 | |
Benjamin Kramer | bb377ed | 2009-11-30 17:08:26 +0000 | [diff] [blame] | 332 | d->addAttr(::new (S.Context) AliasAttr(Str->getString())); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 333 | } |
| 334 | |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 335 | static void HandleAlwaysInlineAttr(Decl *d, const AttributeList &Attr, |
Daniel Dunbar | af668b0 | 2008-10-28 00:17:57 +0000 | [diff] [blame] | 336 | Sema &S) { |
| 337 | // check the attribute arguments. |
| 338 | if (Attr.getNumArgs() != 0) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 339 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
Daniel Dunbar | af668b0 | 2008-10-28 00:17:57 +0000 | [diff] [blame] | 340 | return; |
| 341 | } |
Anders Carlsson | 5bab788 | 2009-02-19 19:16:48 +0000 | [diff] [blame] | 342 | |
Chris Lattner | c519743 | 2009-04-14 17:02:11 +0000 | [diff] [blame] | 343 | if (!isa<FunctionDecl>(d)) { |
Anders Carlsson | 5bab788 | 2009-02-19 19:16:48 +0000 | [diff] [blame] | 344 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) |
Ted Kremenek | 5dc53c9 | 2009-05-13 21:07:32 +0000 | [diff] [blame] | 345 | << Attr.getName() << 0 /*function*/; |
Anders Carlsson | 5bab788 | 2009-02-19 19:16:48 +0000 | [diff] [blame] | 346 | return; |
| 347 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 348 | |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 349 | d->addAttr(::new (S.Context) AlwaysInlineAttr()); |
Daniel Dunbar | af668b0 | 2008-10-28 00:17:57 +0000 | [diff] [blame] | 350 | } |
| 351 | |
Ryan Flynn | 76168e2 | 2009-08-09 20:07:29 +0000 | [diff] [blame] | 352 | static void HandleMallocAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
| 353 | // check the attribute arguments. |
| 354 | if (Attr.getNumArgs() != 0) { |
| 355 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
| 356 | return; |
| 357 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 358 | |
Ted Kremenek | 2cff7d1 | 2009-08-15 00:51:46 +0000 | [diff] [blame] | 359 | if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(d)) { |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 360 | QualType RetTy = FD->getResultType(); |
Ted Kremenek | 2cff7d1 | 2009-08-15 00:51:46 +0000 | [diff] [blame] | 361 | if (RetTy->isAnyPointerType() || RetTy->isBlockPointerType()) { |
| 362 | d->addAttr(::new (S.Context) MallocAttr()); |
| 363 | return; |
| 364 | } |
Ryan Flynn | 76168e2 | 2009-08-09 20:07:29 +0000 | [diff] [blame] | 365 | } |
| 366 | |
Ted Kremenek | 2cff7d1 | 2009-08-15 00:51:46 +0000 | [diff] [blame] | 367 | S.Diag(Attr.getLoc(), diag::warn_attribute_malloc_pointer_only); |
Ryan Flynn | 76168e2 | 2009-08-09 20:07:29 +0000 | [diff] [blame] | 368 | } |
| 369 | |
Ted Kremenek | b725232 | 2009-04-10 00:01:14 +0000 | [diff] [blame] | 370 | static bool HandleCommonNoReturnAttr(Decl *d, const AttributeList &Attr, |
Ted Kremenek | 5dc53c9 | 2009-05-13 21:07:32 +0000 | [diff] [blame] | 371 | Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 372 | // check the attribute arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 373 | if (Attr.getNumArgs() != 0) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 374 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
Ted Kremenek | b725232 | 2009-04-10 00:01:14 +0000 | [diff] [blame] | 375 | return false; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 376 | } |
Daniel Dunbar | d3f2c10 | 2008-10-19 02:04:16 +0000 | [diff] [blame] | 377 | |
Mike Stump | 19c30c0 | 2009-04-29 19:03:13 +0000 | [diff] [blame] | 378 | if (!isFunctionOrMethod(d) && !isa<BlockDecl>(d)) { |
| 379 | ValueDecl *VD = dyn_cast<ValueDecl>(d); |
Mike Stump | 3ee7764 | 2009-12-15 03:11:10 +0000 | [diff] [blame] | 380 | if (VD == 0 || (!VD->getType()->isBlockPointerType() |
| 381 | && !VD->getType()->isFunctionPointerType())) { |
Sean Hunt | bbd37c6 | 2009-11-21 08:43:09 +0000 | [diff] [blame] | 382 | S.Diag(Attr.getLoc(), |
| 383 | Attr.isCXX0XAttribute() ? diag::err_attribute_wrong_decl_type |
| 384 | : diag::warn_attribute_wrong_decl_type) |
Ted Kremenek | 5dc53c9 | 2009-05-13 21:07:32 +0000 | [diff] [blame] | 385 | << Attr.getName() << 0 /*function*/; |
Mike Stump | 19c30c0 | 2009-04-29 19:03:13 +0000 | [diff] [blame] | 386 | return false; |
| 387 | } |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 388 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 389 | |
Ted Kremenek | b725232 | 2009-04-10 00:01:14 +0000 | [diff] [blame] | 390 | return true; |
| 391 | } |
| 392 | |
| 393 | static void HandleNoReturnAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
John McCall | 04a67a6 | 2010-02-05 21:31:56 +0000 | [diff] [blame^] | 394 | // Don't apply as a decl attribute to ValueDecl. |
| 395 | // FIXME: probably ought to diagnose this. |
| 396 | if (isa<ValueDecl>(d)) |
| 397 | return; |
| 398 | |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 399 | if (HandleCommonNoReturnAttr(d, Attr, S)) |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 400 | d->addAttr(::new (S.Context) NoReturnAttr()); |
Ted Kremenek | b725232 | 2009-04-10 00:01:14 +0000 | [diff] [blame] | 401 | } |
| 402 | |
| 403 | static void HandleAnalyzerNoReturnAttr(Decl *d, const AttributeList &Attr, |
| 404 | Sema &S) { |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 405 | if (HandleCommonNoReturnAttr(d, Attr, S)) |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 406 | d->addAttr(::new (S.Context) AnalyzerNoReturnAttr()); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 407 | } |
| 408 | |
Sean Hunt | bbd37c6 | 2009-11-21 08:43:09 +0000 | [diff] [blame] | 409 | static void HandleDependencyAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
| 410 | if (!isFunctionOrMethod(d) && !isa<ParmVarDecl>(d)) { |
| 411 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_decl_type) |
John McCall | 04a67a6 | 2010-02-05 21:31:56 +0000 | [diff] [blame^] | 412 | << Attr.getName() << 8 /*function, method, or parameter*/; |
Sean Hunt | bbd37c6 | 2009-11-21 08:43:09 +0000 | [diff] [blame] | 413 | return; |
| 414 | } |
| 415 | // FIXME: Actually store the attribute on the declaration |
| 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 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 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) |
Ted Kremenek | 5dc53c9 | 2009-05-13 21:07:32 +0000 | [diff] [blame] | 427 | << Attr.getName() << 2 /*variable and function*/; |
Ted Kremenek | 7379889 | 2008-07-25 04:39:19 +0000 | [diff] [blame] | 428 | return; |
| 429 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 430 | |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 431 | d->addAttr(::new (S.Context) UnusedAttr()); |
Ted Kremenek | 7379889 | 2008-07-25 04:39:19 +0000 | [diff] [blame] | 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 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 440 | |
Daniel Dunbar | b805dad | 2009-02-13 19:23:53 +0000 | [diff] [blame] | 441 | if (const VarDecl *VD = dyn_cast<VarDecl>(d)) { |
Daniel Dunbar | 186204b | 2009-02-13 22:48:56 +0000 | [diff] [blame] | 442 | if (VD->hasLocalStorage() || VD->hasExternalStorage()) { |
Daniel Dunbar | b805dad | 2009-02-13 19:23:53 +0000 | [diff] [blame] | 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) |
Ted Kremenek | 5dc53c9 | 2009-05-13 21:07:32 +0000 | [diff] [blame] | 448 | << Attr.getName() << 2 /*variable and function*/; |
Daniel Dunbar | b805dad | 2009-02-13 19:23:53 +0000 | [diff] [blame] | 449 | return; |
| 450 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 451 | |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 452 | d->addAttr(::new (S.Context) UsedAttr()); |
Daniel Dunbar | b805dad | 2009-02-13 19:23:53 +0000 | [diff] [blame] | 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; |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 461 | } |
Daniel Dunbar | 3068ae0 | 2008-07-31 22:40:48 +0000 | [diff] [blame] | 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 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 474 | |
Chris Lattner | c519743 | 2009-04-14 17:02:11 +0000 | [diff] [blame] | 475 | if (!isa<FunctionDecl>(d)) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 476 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) |
Ted Kremenek | 5dc53c9 | 2009-05-13 21:07:32 +0000 | [diff] [blame] | 477 | << Attr.getName() << 0 /*function*/; |
Daniel Dunbar | 3068ae0 | 2008-07-31 22:40:48 +0000 | [diff] [blame] | 478 | return; |
| 479 | } |
| 480 | |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 481 | d->addAttr(::new (S.Context) ConstructorAttr(priority)); |
Daniel Dunbar | 3068ae0 | 2008-07-31 22:40:48 +0000 | [diff] [blame] | 482 | } |
| 483 | |
| 484 | static void HandleDestructorAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
| 485 | // check the attribute arguments. |
| 486 | if (Attr.getNumArgs() != 0 && Attr.getNumArgs() != 1) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 487 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) |
| 488 | << "0 or 1"; |
Daniel Dunbar | 3068ae0 | 2008-07-31 22:40:48 +0000 | [diff] [blame] | 489 | return; |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 490 | } |
Daniel Dunbar | 3068ae0 | 2008-07-31 22:40:48 +0000 | [diff] [blame] | 491 | |
| 492 | int priority = 65535; // FIXME: Do not hardcode such constants. |
| 493 | if (Attr.getNumArgs() > 0) { |
| 494 | Expr *E = static_cast<Expr *>(Attr.getArg(0)); |
| 495 | llvm::APSInt Idx(32); |
| 496 | if (!E->isIntegerConstantExpr(Idx, S.Context)) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 497 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_int) |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 498 | << "destructor" << 1 << E->getSourceRange(); |
Daniel Dunbar | 3068ae0 | 2008-07-31 22:40:48 +0000 | [diff] [blame] | 499 | return; |
| 500 | } |
| 501 | priority = Idx.getZExtValue(); |
| 502 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 503 | |
Anders Carlsson | 6782fc6 | 2008-08-22 22:10:48 +0000 | [diff] [blame] | 504 | if (!isa<FunctionDecl>(d)) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 505 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) |
Ted Kremenek | 5dc53c9 | 2009-05-13 21:07:32 +0000 | [diff] [blame] | 506 | << Attr.getName() << 0 /*function*/; |
Daniel Dunbar | 3068ae0 | 2008-07-31 22:40:48 +0000 | [diff] [blame] | 507 | return; |
| 508 | } |
| 509 | |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 510 | d->addAttr(::new (S.Context) DestructorAttr(priority)); |
Daniel Dunbar | 3068ae0 | 2008-07-31 22:40:48 +0000 | [diff] [blame] | 511 | } |
| 512 | |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 513 | static void HandleDeprecatedAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 514 | // check the attribute arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 515 | if (Attr.getNumArgs() != 0) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 516 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 517 | return; |
| 518 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 519 | |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 520 | d->addAttr(::new (S.Context) DeprecatedAttr()); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 521 | } |
| 522 | |
Fariborz Jahanian | bc1c877 | 2008-12-17 01:07:27 +0000 | [diff] [blame] | 523 | static void HandleUnavailableAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
| 524 | // check the attribute arguments. |
| 525 | if (Attr.getNumArgs() != 0) { |
| 526 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
| 527 | return; |
| 528 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 529 | |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 530 | d->addAttr(::new (S.Context) UnavailableAttr()); |
Fariborz Jahanian | bc1c877 | 2008-12-17 01:07:27 +0000 | [diff] [blame] | 531 | } |
| 532 | |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 533 | static void HandleVisibilityAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 534 | // check the attribute arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 535 | if (Attr.getNumArgs() != 1) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 536 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 537 | return; |
| 538 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 539 | |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 540 | Expr *Arg = static_cast<Expr*>(Attr.getArg(0)); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 541 | Arg = Arg->IgnoreParenCasts(); |
| 542 | StringLiteral *Str = dyn_cast<StringLiteral>(Arg); |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 543 | |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 544 | if (Str == 0 || Str->isWide()) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 545 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_string) |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 546 | << "visibility" << 1; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 547 | return; |
| 548 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 549 | |
Benjamin Kramer | c96f494 | 2010-01-23 18:16:35 +0000 | [diff] [blame] | 550 | llvm::StringRef TypeStr = Str->getString(); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 551 | VisibilityAttr::VisibilityTypes type; |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 552 | |
Benjamin Kramer | c96f494 | 2010-01-23 18:16:35 +0000 | [diff] [blame] | 553 | if (TypeStr == "default") |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 554 | type = VisibilityAttr::DefaultVisibility; |
Benjamin Kramer | c96f494 | 2010-01-23 18:16:35 +0000 | [diff] [blame] | 555 | else if (TypeStr == "hidden") |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 556 | type = VisibilityAttr::HiddenVisibility; |
Benjamin Kramer | c96f494 | 2010-01-23 18:16:35 +0000 | [diff] [blame] | 557 | else if (TypeStr == "internal") |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 558 | type = VisibilityAttr::HiddenVisibility; // FIXME |
Benjamin Kramer | c96f494 | 2010-01-23 18:16:35 +0000 | [diff] [blame] | 559 | else if (TypeStr == "protected") |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 560 | type = VisibilityAttr::ProtectedVisibility; |
| 561 | else { |
Chris Lattner | 08631c5 | 2008-11-23 21:45:46 +0000 | [diff] [blame] | 562 | S.Diag(Attr.getLoc(), diag::warn_attribute_unknown_visibility) << TypeStr; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 563 | return; |
| 564 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 565 | |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 566 | d->addAttr(::new (S.Context) VisibilityAttr(type)); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 567 | } |
| 568 | |
Chris Lattner | 0db29ec | 2009-02-14 08:09:34 +0000 | [diff] [blame] | 569 | static void HandleObjCExceptionAttr(Decl *D, const AttributeList &Attr, |
| 570 | Sema &S) { |
| 571 | if (Attr.getNumArgs() != 0) { |
| 572 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
| 573 | return; |
| 574 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 575 | |
Chris Lattner | 0db29ec | 2009-02-14 08:09:34 +0000 | [diff] [blame] | 576 | ObjCInterfaceDecl *OCI = dyn_cast<ObjCInterfaceDecl>(D); |
| 577 | if (OCI == 0) { |
| 578 | S.Diag(Attr.getLoc(), diag::err_attribute_requires_objc_interface); |
| 579 | return; |
| 580 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 581 | |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 582 | D->addAttr(::new (S.Context) ObjCExceptionAttr()); |
Chris Lattner | 0db29ec | 2009-02-14 08:09:34 +0000 | [diff] [blame] | 583 | } |
| 584 | |
| 585 | static void HandleObjCNSObject(Decl *D, const AttributeList &Attr, Sema &S) { |
Fariborz Jahanian | fa23c1d | 2009-01-13 23:34:40 +0000 | [diff] [blame] | 586 | if (Attr.getNumArgs() != 0) { |
| 587 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; |
| 588 | return; |
| 589 | } |
Chris Lattner | 0db29ec | 2009-02-14 08:09:34 +0000 | [diff] [blame] | 590 | if (TypedefDecl *TD = dyn_cast<TypedefDecl>(D)) { |
Fariborz Jahanian | fa23c1d | 2009-01-13 23:34:40 +0000 | [diff] [blame] | 591 | QualType T = TD->getUnderlyingType(); |
| 592 | if (!T->isPointerType() || |
Ted Kremenek | 6217b80 | 2009-07-29 21:53:49 +0000 | [diff] [blame] | 593 | !T->getAs<PointerType>()->getPointeeType()->isRecordType()) { |
Fariborz Jahanian | fa23c1d | 2009-01-13 23:34:40 +0000 | [diff] [blame] | 594 | S.Diag(TD->getLocation(), diag::err_nsobject_attribute); |
| 595 | return; |
| 596 | } |
| 597 | } |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 598 | D->addAttr(::new (S.Context) ObjCNSObjectAttr()); |
Fariborz Jahanian | fa23c1d | 2009-01-13 23:34:40 +0000 | [diff] [blame] | 599 | } |
| 600 | |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 601 | static void |
Douglas Gregor | f9201e0 | 2009-02-11 23:02:49 +0000 | [diff] [blame] | 602 | HandleOverloadableAttr(Decl *D, const AttributeList &Attr, Sema &S) { |
| 603 | if (Attr.getNumArgs() != 0) { |
| 604 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; |
| 605 | return; |
| 606 | } |
| 607 | |
| 608 | if (!isa<FunctionDecl>(D)) { |
| 609 | S.Diag(Attr.getLoc(), diag::err_attribute_overloadable_not_function); |
| 610 | return; |
| 611 | } |
| 612 | |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 613 | D->addAttr(::new (S.Context) OverloadableAttr()); |
Douglas Gregor | f9201e0 | 2009-02-11 23:02:49 +0000 | [diff] [blame] | 614 | } |
| 615 | |
Steve Naroff | 9eae576 | 2008-09-18 16:44:58 +0000 | [diff] [blame] | 616 | static void HandleBlocksAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 617 | if (!Attr.getParameterName()) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 618 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_string) |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 619 | << "blocks" << 1; |
Steve Naroff | 9eae576 | 2008-09-18 16:44:58 +0000 | [diff] [blame] | 620 | return; |
| 621 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 622 | |
Steve Naroff | 9eae576 | 2008-09-18 16:44:58 +0000 | [diff] [blame] | 623 | if (Attr.getNumArgs() != 0) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 624 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; |
Steve Naroff | 9eae576 | 2008-09-18 16:44:58 +0000 | [diff] [blame] | 625 | return; |
| 626 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 627 | |
Steve Naroff | 9eae576 | 2008-09-18 16:44:58 +0000 | [diff] [blame] | 628 | BlocksAttr::BlocksAttrTypes type; |
Chris Lattner | 92e62b0 | 2008-11-20 04:42:34 +0000 | [diff] [blame] | 629 | if (Attr.getParameterName()->isStr("byref")) |
Steve Naroff | 9eae576 | 2008-09-18 16:44:58 +0000 | [diff] [blame] | 630 | type = BlocksAttr::ByRef; |
| 631 | else { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 632 | S.Diag(Attr.getLoc(), diag::warn_attribute_type_not_supported) |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 633 | << "blocks" << Attr.getParameterName(); |
Steve Naroff | 9eae576 | 2008-09-18 16:44:58 +0000 | [diff] [blame] | 634 | return; |
| 635 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 636 | |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 637 | d->addAttr(::new (S.Context) BlocksAttr(type)); |
Steve Naroff | 9eae576 | 2008-09-18 16:44:58 +0000 | [diff] [blame] | 638 | } |
| 639 | |
Anders Carlsson | 7709182 | 2008-10-05 18:05:59 +0000 | [diff] [blame] | 640 | static void HandleSentinelAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
| 641 | // check the attribute arguments. |
| 642 | if (Attr.getNumArgs() > 2) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 643 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) |
| 644 | << "0, 1 or 2"; |
Anders Carlsson | 7709182 | 2008-10-05 18:05:59 +0000 | [diff] [blame] | 645 | return; |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 646 | } |
| 647 | |
Anders Carlsson | 7709182 | 2008-10-05 18:05:59 +0000 | [diff] [blame] | 648 | int sentinel = 0; |
| 649 | if (Attr.getNumArgs() > 0) { |
| 650 | Expr *E = static_cast<Expr *>(Attr.getArg(0)); |
| 651 | llvm::APSInt Idx(32); |
| 652 | if (!E->isIntegerConstantExpr(Idx, S.Context)) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 653 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_int) |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 654 | << "sentinel" << 1 << E->getSourceRange(); |
Anders Carlsson | 7709182 | 2008-10-05 18:05:59 +0000 | [diff] [blame] | 655 | return; |
| 656 | } |
| 657 | sentinel = Idx.getZExtValue(); |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 658 | |
Anders Carlsson | 7709182 | 2008-10-05 18:05:59 +0000 | [diff] [blame] | 659 | if (sentinel < 0) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 660 | S.Diag(Attr.getLoc(), diag::err_attribute_sentinel_less_than_zero) |
| 661 | << E->getSourceRange(); |
Anders Carlsson | 7709182 | 2008-10-05 18:05:59 +0000 | [diff] [blame] | 662 | return; |
| 663 | } |
| 664 | } |
| 665 | |
| 666 | int nullPos = 0; |
| 667 | if (Attr.getNumArgs() > 1) { |
| 668 | Expr *E = static_cast<Expr *>(Attr.getArg(1)); |
| 669 | llvm::APSInt Idx(32); |
| 670 | if (!E->isIntegerConstantExpr(Idx, S.Context)) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 671 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_int) |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 672 | << "sentinel" << 2 << E->getSourceRange(); |
Anders Carlsson | 7709182 | 2008-10-05 18:05:59 +0000 | [diff] [blame] | 673 | return; |
| 674 | } |
| 675 | nullPos = Idx.getZExtValue(); |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 676 | |
Anders Carlsson | 7709182 | 2008-10-05 18:05:59 +0000 | [diff] [blame] | 677 | if (nullPos > 1 || nullPos < 0) { |
| 678 | // FIXME: This error message could be improved, it would be nice |
| 679 | // to say what the bounds actually are. |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 680 | S.Diag(Attr.getLoc(), diag::err_attribute_sentinel_not_zero_or_one) |
| 681 | << E->getSourceRange(); |
Anders Carlsson | 7709182 | 2008-10-05 18:05:59 +0000 | [diff] [blame] | 682 | return; |
| 683 | } |
| 684 | } |
| 685 | |
| 686 | if (FunctionDecl *FD = dyn_cast<FunctionDecl>(d)) { |
John McCall | 183700f | 2009-09-21 23:43:11 +0000 | [diff] [blame] | 687 | const FunctionType *FT = FD->getType()->getAs<FunctionType>(); |
Chris Lattner | 897cd90 | 2009-03-17 23:03:47 +0000 | [diff] [blame] | 688 | assert(FT && "FunctionDecl has non-function type?"); |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 689 | |
Chris Lattner | 897cd90 | 2009-03-17 23:03:47 +0000 | [diff] [blame] | 690 | if (isa<FunctionNoProtoType>(FT)) { |
| 691 | S.Diag(Attr.getLoc(), diag::warn_attribute_sentinel_named_arguments); |
| 692 | return; |
| 693 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 694 | |
Chris Lattner | 897cd90 | 2009-03-17 23:03:47 +0000 | [diff] [blame] | 695 | if (!cast<FunctionProtoType>(FT)->isVariadic()) { |
Fariborz Jahanian | 3bba33d | 2009-05-15 21:18:04 +0000 | [diff] [blame] | 696 | S.Diag(Attr.getLoc(), diag::warn_attribute_sentinel_not_variadic) << 0; |
Anders Carlsson | 7709182 | 2008-10-05 18:05:59 +0000 | [diff] [blame] | 697 | return; |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 698 | } |
Anders Carlsson | 7709182 | 2008-10-05 18:05:59 +0000 | [diff] [blame] | 699 | } else if (ObjCMethodDecl *MD = dyn_cast<ObjCMethodDecl>(d)) { |
| 700 | if (!MD->isVariadic()) { |
Fariborz Jahanian | 3bba33d | 2009-05-15 21:18:04 +0000 | [diff] [blame] | 701 | S.Diag(Attr.getLoc(), diag::warn_attribute_sentinel_not_variadic) << 0; |
Anders Carlsson | 7709182 | 2008-10-05 18:05:59 +0000 | [diff] [blame] | 702 | return; |
Fariborz Jahanian | 2f7c392 | 2009-05-14 20:53:39 +0000 | [diff] [blame] | 703 | } |
| 704 | } else if (isa<BlockDecl>(d)) { |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 705 | // Note! BlockDecl is typeless. Variadic diagnostics will be issued by the |
| 706 | // caller. |
Fariborz Jahanian | 2f7c392 | 2009-05-14 20:53:39 +0000 | [diff] [blame] | 707 | ; |
| 708 | } else if (const VarDecl *V = dyn_cast<VarDecl>(d)) { |
Fariborz Jahanian | 2f7c392 | 2009-05-14 20:53:39 +0000 | [diff] [blame] | 709 | QualType Ty = V->getType(); |
Fariborz Jahanian | daf0415 | 2009-05-15 20:33:25 +0000 | [diff] [blame] | 710 | if (Ty->isBlockPointerType() || Ty->isFunctionPointerType()) { |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 711 | const FunctionType *FT = Ty->isFunctionPointerType() ? getFunctionType(d) |
John McCall | 183700f | 2009-09-21 23:43:11 +0000 | [diff] [blame] | 712 | : Ty->getAs<BlockPointerType>()->getPointeeType()->getAs<FunctionType>(); |
Fariborz Jahanian | 2f7c392 | 2009-05-14 20:53:39 +0000 | [diff] [blame] | 713 | if (!cast<FunctionProtoType>(FT)->isVariadic()) { |
Fariborz Jahanian | 3bba33d | 2009-05-15 21:18:04 +0000 | [diff] [blame] | 714 | int m = Ty->isFunctionPointerType() ? 0 : 1; |
| 715 | S.Diag(Attr.getLoc(), diag::warn_attribute_sentinel_not_variadic) << m; |
Fariborz Jahanian | 2f7c392 | 2009-05-14 20:53:39 +0000 | [diff] [blame] | 716 | return; |
| 717 | } |
Mike Stump | ac5fc7c | 2009-08-04 21:02:39 +0000 | [diff] [blame] | 718 | } else { |
Fariborz Jahanian | 2f7c392 | 2009-05-14 20:53:39 +0000 | [diff] [blame] | 719 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) |
Fariborz Jahanian | ffb0081 | 2009-05-14 20:57:28 +0000 | [diff] [blame] | 720 | << Attr.getName() << 6 /*function, method or block */; |
Fariborz Jahanian | 2f7c392 | 2009-05-14 20:53:39 +0000 | [diff] [blame] | 721 | return; |
| 722 | } |
Anders Carlsson | 7709182 | 2008-10-05 18:05:59 +0000 | [diff] [blame] | 723 | } else { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 724 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) |
Fariborz Jahanian | ffb0081 | 2009-05-14 20:57:28 +0000 | [diff] [blame] | 725 | << Attr.getName() << 6 /*function, method or block */; |
Anders Carlsson | 7709182 | 2008-10-05 18:05:59 +0000 | [diff] [blame] | 726 | return; |
| 727 | } |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 728 | d->addAttr(::new (S.Context) SentinelAttr(sentinel, nullPos)); |
Anders Carlsson | 7709182 | 2008-10-05 18:05:59 +0000 | [diff] [blame] | 729 | } |
| 730 | |
Chris Lattner | 026dc96 | 2009-02-14 07:37:35 +0000 | [diff] [blame] | 731 | static void HandleWarnUnusedResult(Decl *D, const AttributeList &Attr, Sema &S) { |
| 732 | // check the attribute arguments. |
| 733 | if (Attr.getNumArgs() != 0) { |
| 734 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
| 735 | return; |
| 736 | } |
| 737 | |
Nuno Lopes | d20254f | 2009-12-20 23:11:08 +0000 | [diff] [blame] | 738 | if (!isFunctionOrMethod(D)) { |
Chris Lattner | 026dc96 | 2009-02-14 07:37:35 +0000 | [diff] [blame] | 739 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) |
Ted Kremenek | 5dc53c9 | 2009-05-13 21:07:32 +0000 | [diff] [blame] | 740 | << Attr.getName() << 0 /*function*/; |
Chris Lattner | 026dc96 | 2009-02-14 07:37:35 +0000 | [diff] [blame] | 741 | return; |
| 742 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 743 | |
Nuno Lopes | f857798 | 2009-12-22 23:59:52 +0000 | [diff] [blame] | 744 | if (getFunctionType(D)->getResultType()->isVoidType()) { |
| 745 | S.Diag(Attr.getLoc(), diag::warn_attribute_void_function) |
| 746 | << Attr.getName(); |
| 747 | return; |
| 748 | } |
| 749 | |
Nuno Lopes | d20254f | 2009-12-20 23:11:08 +0000 | [diff] [blame] | 750 | D->addAttr(::new (S.Context) WarnUnusedResultAttr()); |
Chris Lattner | 026dc96 | 2009-02-14 07:37:35 +0000 | [diff] [blame] | 751 | } |
| 752 | |
| 753 | static void HandleWeakAttr(Decl *D, const AttributeList &Attr, Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 754 | // check the attribute arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 755 | if (Attr.getNumArgs() != 0) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 756 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 757 | return; |
| 758 | } |
Daniel Dunbar | 6e775db | 2009-03-06 06:39:57 +0000 | [diff] [blame] | 759 | |
Fariborz Jahanian | f23ecd9 | 2009-07-16 01:12:24 +0000 | [diff] [blame] | 760 | /* weak only applies to non-static declarations */ |
| 761 | bool isStatic = false; |
| 762 | if (VarDecl *VD = dyn_cast<VarDecl>(D)) { |
| 763 | isStatic = VD->getStorageClass() == VarDecl::Static; |
| 764 | } else if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { |
| 765 | isStatic = FD->getStorageClass() == FunctionDecl::Static; |
| 766 | } |
| 767 | if (isStatic) { |
| 768 | S.Diag(Attr.getLoc(), diag::err_attribute_weak_static) << |
| 769 | dyn_cast<NamedDecl>(D)->getNameAsString(); |
| 770 | return; |
| 771 | } |
| 772 | |
Daniel Dunbar | 6e775db | 2009-03-06 06:39:57 +0000 | [diff] [blame] | 773 | // TODO: could also be applied to methods? |
| 774 | if (!isa<FunctionDecl>(D) && !isa<VarDecl>(D)) { |
| 775 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) |
Ted Kremenek | 5dc53c9 | 2009-05-13 21:07:32 +0000 | [diff] [blame] | 776 | << Attr.getName() << 2 /*variable and function*/; |
Daniel Dunbar | 6e775db | 2009-03-06 06:39:57 +0000 | [diff] [blame] | 777 | return; |
| 778 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 779 | |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 780 | D->addAttr(::new (S.Context) WeakAttr()); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 781 | } |
| 782 | |
Daniel Dunbar | 6e775db | 2009-03-06 06:39:57 +0000 | [diff] [blame] | 783 | static void HandleWeakImportAttr(Decl *D, const AttributeList &Attr, Sema &S) { |
| 784 | // check the attribute arguments. |
| 785 | if (Attr.getNumArgs() != 0) { |
| 786 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
| 787 | return; |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 788 | } |
Daniel Dunbar | 6e775db | 2009-03-06 06:39:57 +0000 | [diff] [blame] | 789 | |
| 790 | // weak_import only applies to variable & function declarations. |
| 791 | bool isDef = false; |
| 792 | if (VarDecl *VD = dyn_cast<VarDecl>(D)) { |
| 793 | isDef = (!VD->hasExternalStorage() || VD->getInit()); |
| 794 | } else if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { |
Argyrios Kyrtzidis | 6fb0aee | 2009-06-30 02:35:26 +0000 | [diff] [blame] | 795 | isDef = FD->getBody(); |
Fariborz Jahanian | d4edddd | 2009-05-04 19:35:12 +0000 | [diff] [blame] | 796 | } else if (isa<ObjCPropertyDecl>(D) || isa<ObjCMethodDecl>(D)) { |
| 797 | // We ignore weak import on properties and methods |
Mike Stump | 1c90f4d | 2009-03-18 17:39:31 +0000 | [diff] [blame] | 798 | return; |
Fariborz Jahanian | 5f8f857 | 2009-11-17 19:08:08 +0000 | [diff] [blame] | 799 | } else if (!(S.LangOpts.ObjCNonFragileABI && isa<ObjCInterfaceDecl>(D))) { |
Daniel Dunbar | 6e775db | 2009-03-06 06:39:57 +0000 | [diff] [blame] | 800 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) |
Ted Kremenek | 5dc53c9 | 2009-05-13 21:07:32 +0000 | [diff] [blame] | 801 | << Attr.getName() << 2 /*variable and function*/; |
Daniel Dunbar | 6e775db | 2009-03-06 06:39:57 +0000 | [diff] [blame] | 802 | return; |
| 803 | } |
| 804 | |
| 805 | // Merge should handle any subsequent violations. |
| 806 | if (isDef) { |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 807 | S.Diag(Attr.getLoc(), |
Daniel Dunbar | 6e775db | 2009-03-06 06:39:57 +0000 | [diff] [blame] | 808 | diag::warn_attribute_weak_import_invalid_on_definition) |
| 809 | << "weak_import" << 2 /*variable and function*/; |
| 810 | return; |
| 811 | } |
| 812 | |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 813 | D->addAttr(::new (S.Context) WeakImportAttr()); |
Daniel Dunbar | 6e775db | 2009-03-06 06:39:57 +0000 | [diff] [blame] | 814 | } |
| 815 | |
Chris Lattner | 026dc96 | 2009-02-14 07:37:35 +0000 | [diff] [blame] | 816 | static void HandleDLLImportAttr(Decl *D, const AttributeList &Attr, Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 817 | // check the attribute arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 818 | if (Attr.getNumArgs() != 0) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 819 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 820 | return; |
| 821 | } |
Anton Korobeynikov | 7b0a52f | 2008-12-23 22:24:07 +0000 | [diff] [blame] | 822 | |
Anton Korobeynikov | 2f40270 | 2008-12-26 00:52:02 +0000 | [diff] [blame] | 823 | // Attribute can be applied only to functions or variables. |
Chris Lattner | 026dc96 | 2009-02-14 07:37:35 +0000 | [diff] [blame] | 824 | if (isa<VarDecl>(D)) { |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 825 | D->addAttr(::new (S.Context) DLLImportAttr()); |
Anton Korobeynikov | 2f40270 | 2008-12-26 00:52:02 +0000 | [diff] [blame] | 826 | return; |
| 827 | } |
| 828 | |
Chris Lattner | 026dc96 | 2009-02-14 07:37:35 +0000 | [diff] [blame] | 829 | FunctionDecl *FD = dyn_cast<FunctionDecl>(D); |
Anton Korobeynikov | 2f40270 | 2008-12-26 00:52:02 +0000 | [diff] [blame] | 830 | if (!FD) { |
| 831 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) |
Ted Kremenek | 5dc53c9 | 2009-05-13 21:07:32 +0000 | [diff] [blame] | 832 | << Attr.getName() << 2 /*variable and function*/; |
Anton Korobeynikov | 2f40270 | 2008-12-26 00:52:02 +0000 | [diff] [blame] | 833 | return; |
| 834 | } |
| 835 | |
| 836 | // Currently, the dllimport attribute is ignored for inlined functions. |
| 837 | // Warning is emitted. |
Douglas Gregor | 0130f3c | 2009-10-27 21:01:01 +0000 | [diff] [blame] | 838 | if (FD->isInlineSpecified()) { |
Anton Korobeynikov | 2f40270 | 2008-12-26 00:52:02 +0000 | [diff] [blame] | 839 | S.Diag(Attr.getLoc(), diag::warn_attribute_ignored) << "dllimport"; |
| 840 | return; |
| 841 | } |
| 842 | |
| 843 | // The attribute is also overridden by a subsequent declaration as dllexport. |
| 844 | // Warning is emitted. |
| 845 | for (AttributeList *nextAttr = Attr.getNext(); nextAttr; |
| 846 | nextAttr = nextAttr->getNext()) { |
| 847 | if (nextAttr->getKind() == AttributeList::AT_dllexport) { |
| 848 | S.Diag(Attr.getLoc(), diag::warn_attribute_ignored) << "dllimport"; |
| 849 | return; |
| 850 | } |
| 851 | } |
| 852 | |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 853 | if (D->getAttr<DLLExportAttr>()) { |
Anton Korobeynikov | 2f40270 | 2008-12-26 00:52:02 +0000 | [diff] [blame] | 854 | S.Diag(Attr.getLoc(), diag::warn_attribute_ignored) << "dllimport"; |
| 855 | return; |
| 856 | } |
| 857 | |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 858 | D->addAttr(::new (S.Context) DLLImportAttr()); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 859 | } |
| 860 | |
Chris Lattner | 026dc96 | 2009-02-14 07:37:35 +0000 | [diff] [blame] | 861 | static void HandleDLLExportAttr(Decl *D, const AttributeList &Attr, Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 862 | // check the attribute arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 863 | if (Attr.getNumArgs() != 0) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 864 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 865 | return; |
| 866 | } |
Anton Korobeynikov | 7b0a52f | 2008-12-23 22:24:07 +0000 | [diff] [blame] | 867 | |
Anton Korobeynikov | 2f40270 | 2008-12-26 00:52:02 +0000 | [diff] [blame] | 868 | // Attribute can be applied only to functions or variables. |
Chris Lattner | 026dc96 | 2009-02-14 07:37:35 +0000 | [diff] [blame] | 869 | if (isa<VarDecl>(D)) { |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 870 | D->addAttr(::new (S.Context) DLLExportAttr()); |
Anton Korobeynikov | 2f40270 | 2008-12-26 00:52:02 +0000 | [diff] [blame] | 871 | return; |
| 872 | } |
| 873 | |
Chris Lattner | 026dc96 | 2009-02-14 07:37:35 +0000 | [diff] [blame] | 874 | FunctionDecl *FD = dyn_cast<FunctionDecl>(D); |
Anton Korobeynikov | 2f40270 | 2008-12-26 00:52:02 +0000 | [diff] [blame] | 875 | if (!FD) { |
| 876 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) |
Ted Kremenek | 5dc53c9 | 2009-05-13 21:07:32 +0000 | [diff] [blame] | 877 | << Attr.getName() << 2 /*variable and function*/; |
Anton Korobeynikov | 2f40270 | 2008-12-26 00:52:02 +0000 | [diff] [blame] | 878 | return; |
| 879 | } |
| 880 | |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 881 | // Currently, the dllexport attribute is ignored for inlined functions, unless |
| 882 | // the -fkeep-inline-functions flag has been used. Warning is emitted; |
Douglas Gregor | 0130f3c | 2009-10-27 21:01:01 +0000 | [diff] [blame] | 883 | if (FD->isInlineSpecified()) { |
Anton Korobeynikov | 2f40270 | 2008-12-26 00:52:02 +0000 | [diff] [blame] | 884 | // FIXME: ... unless the -fkeep-inline-functions flag has been used. |
| 885 | S.Diag(Attr.getLoc(), diag::warn_attribute_ignored) << "dllexport"; |
| 886 | return; |
| 887 | } |
| 888 | |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 889 | D->addAttr(::new (S.Context) DLLExportAttr()); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 890 | } |
| 891 | |
Nate Begeman | 6f3d838 | 2009-06-26 06:32:41 +0000 | [diff] [blame] | 892 | static void HandleReqdWorkGroupSize(Decl *D, const AttributeList &Attr, |
| 893 | Sema &S) { |
| 894 | // Attribute has 3 arguments. |
| 895 | if (Attr.getNumArgs() != 3) { |
| 896 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; |
| 897 | return; |
| 898 | } |
| 899 | |
| 900 | unsigned WGSize[3]; |
| 901 | for (unsigned i = 0; i < 3; ++i) { |
| 902 | Expr *E = static_cast<Expr *>(Attr.getArg(i)); |
| 903 | llvm::APSInt ArgNum(32); |
| 904 | if (!E->isIntegerConstantExpr(ArgNum, S.Context)) { |
| 905 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_not_int) |
| 906 | << "reqd_work_group_size" << E->getSourceRange(); |
| 907 | return; |
| 908 | } |
| 909 | WGSize[i] = (unsigned) ArgNum.getZExtValue(); |
| 910 | } |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 911 | D->addAttr(::new (S.Context) ReqdWorkGroupSizeAttr(WGSize[0], WGSize[1], |
Nate Begeman | 6f3d838 | 2009-06-26 06:32:41 +0000 | [diff] [blame] | 912 | WGSize[2])); |
| 913 | } |
| 914 | |
Chris Lattner | 026dc96 | 2009-02-14 07:37:35 +0000 | [diff] [blame] | 915 | static void HandleSectionAttr(Decl *D, const AttributeList &Attr, Sema &S) { |
Daniel Dunbar | 17f194f | 2009-02-12 17:28:23 +0000 | [diff] [blame] | 916 | // Attribute has no arguments. |
| 917 | if (Attr.getNumArgs() != 1) { |
| 918 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; |
| 919 | return; |
| 920 | } |
| 921 | |
| 922 | // Make sure that there is a string literal as the sections's single |
| 923 | // argument. |
Chris Lattner | 797c3c4 | 2009-08-10 19:03:04 +0000 | [diff] [blame] | 924 | Expr *ArgExpr = static_cast<Expr *>(Attr.getArg(0)); |
| 925 | StringLiteral *SE = dyn_cast<StringLiteral>(ArgExpr); |
Daniel Dunbar | 17f194f | 2009-02-12 17:28:23 +0000 | [diff] [blame] | 926 | if (!SE) { |
Chris Lattner | 797c3c4 | 2009-08-10 19:03:04 +0000 | [diff] [blame] | 927 | S.Diag(ArgExpr->getLocStart(), diag::err_attribute_not_string) << "section"; |
Daniel Dunbar | 17f194f | 2009-02-12 17:28:23 +0000 | [diff] [blame] | 928 | return; |
| 929 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 930 | |
Chris Lattner | 797c3c4 | 2009-08-10 19:03:04 +0000 | [diff] [blame] | 931 | // If the target wants to validate the section specifier, make it happen. |
Benjamin Kramer | bb377ed | 2009-11-30 17:08:26 +0000 | [diff] [blame] | 932 | std::string Error = S.Context.Target.isValidSectionSpecifier(SE->getString()); |
Chris Lattner | a1e1dc7 | 2010-01-12 20:58:53 +0000 | [diff] [blame] | 933 | if (!Error.empty()) { |
| 934 | S.Diag(SE->getLocStart(), diag::err_attribute_section_invalid_for_target) |
| 935 | << Error; |
Chris Lattner | 797c3c4 | 2009-08-10 19:03:04 +0000 | [diff] [blame] | 936 | return; |
| 937 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 938 | |
Chris Lattner | a1e1dc7 | 2010-01-12 20:58:53 +0000 | [diff] [blame] | 939 | // This attribute cannot be applied to local variables. |
| 940 | if (isa<VarDecl>(D) && cast<VarDecl>(D)->hasLocalStorage()) { |
| 941 | S.Diag(SE->getLocStart(), diag::err_attribute_section_local_variable); |
| 942 | return; |
| 943 | } |
| 944 | |
| 945 | D->addAttr(::new (S.Context) SectionAttr(SE->getString())); |
Daniel Dunbar | 17f194f | 2009-02-12 17:28:23 +0000 | [diff] [blame] | 946 | } |
| 947 | |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 948 | |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 949 | static void HandleNothrowAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 950 | // check the attribute arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 951 | if (Attr.getNumArgs() != 0) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 952 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 953 | return; |
| 954 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 955 | |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 956 | d->addAttr(::new (S.Context) NoThrowAttr()); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 957 | } |
| 958 | |
Anders Carlsson | 232eb7d | 2008-10-05 23:32:53 +0000 | [diff] [blame] | 959 | static void HandleConstAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
| 960 | // check the attribute arguments. |
| 961 | if (Attr.getNumArgs() != 0) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 962 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
Anders Carlsson | 232eb7d | 2008-10-05 23:32:53 +0000 | [diff] [blame] | 963 | return; |
| 964 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 965 | |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 966 | d->addAttr(::new (S.Context) ConstAttr()); |
Anders Carlsson | 232eb7d | 2008-10-05 23:32:53 +0000 | [diff] [blame] | 967 | } |
| 968 | |
| 969 | static void HandlePureAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
| 970 | // check the attribute arguments. |
| 971 | if (Attr.getNumArgs() != 0) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 972 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
Anders Carlsson | 232eb7d | 2008-10-05 23:32:53 +0000 | [diff] [blame] | 973 | return; |
| 974 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 975 | |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 976 | d->addAttr(::new (S.Context) PureAttr()); |
Anders Carlsson | 232eb7d | 2008-10-05 23:32:53 +0000 | [diff] [blame] | 977 | } |
| 978 | |
Anders Carlsson | f6e35d0 | 2009-01-31 01:16:18 +0000 | [diff] [blame] | 979 | static void HandleCleanupAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 980 | if (!Attr.getParameterName()) { |
Anders Carlsson | f6e35d0 | 2009-01-31 01:16:18 +0000 | [diff] [blame] | 981 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; |
| 982 | return; |
| 983 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 984 | |
Anders Carlsson | f6e35d0 | 2009-01-31 01:16:18 +0000 | [diff] [blame] | 985 | if (Attr.getNumArgs() != 0) { |
| 986 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; |
| 987 | return; |
| 988 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 989 | |
Anders Carlsson | f6e35d0 | 2009-01-31 01:16:18 +0000 | [diff] [blame] | 990 | VarDecl *VD = dyn_cast<VarDecl>(d); |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 991 | |
Anders Carlsson | f6e35d0 | 2009-01-31 01:16:18 +0000 | [diff] [blame] | 992 | if (!VD || !VD->hasLocalStorage()) { |
| 993 | S.Diag(Attr.getLoc(), diag::warn_attribute_ignored) << "cleanup"; |
| 994 | return; |
| 995 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 996 | |
Anders Carlsson | f6e35d0 | 2009-01-31 01:16:18 +0000 | [diff] [blame] | 997 | // Look up the function |
John McCall | f36e02d | 2009-10-09 21:13:30 +0000 | [diff] [blame] | 998 | NamedDecl *CleanupDecl |
| 999 | = S.LookupSingleName(S.TUScope, Attr.getParameterName(), |
| 1000 | Sema::LookupOrdinaryName); |
Anders Carlsson | f6e35d0 | 2009-01-31 01:16:18 +0000 | [diff] [blame] | 1001 | if (!CleanupDecl) { |
Anders Carlsson | 89941c1 | 2009-02-07 23:16:50 +0000 | [diff] [blame] | 1002 | S.Diag(Attr.getLoc(), diag::err_attribute_cleanup_arg_not_found) << |
Anders Carlsson | f6e35d0 | 2009-01-31 01:16:18 +0000 | [diff] [blame] | 1003 | Attr.getParameterName(); |
| 1004 | return; |
| 1005 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1006 | |
Anders Carlsson | f6e35d0 | 2009-01-31 01:16:18 +0000 | [diff] [blame] | 1007 | FunctionDecl *FD = dyn_cast<FunctionDecl>(CleanupDecl); |
| 1008 | if (!FD) { |
Anders Carlsson | 89941c1 | 2009-02-07 23:16:50 +0000 | [diff] [blame] | 1009 | S.Diag(Attr.getLoc(), diag::err_attribute_cleanup_arg_not_function) << |
Anders Carlsson | f6e35d0 | 2009-01-31 01:16:18 +0000 | [diff] [blame] | 1010 | Attr.getParameterName(); |
| 1011 | return; |
| 1012 | } |
| 1013 | |
Anders Carlsson | f6e35d0 | 2009-01-31 01:16:18 +0000 | [diff] [blame] | 1014 | if (FD->getNumParams() != 1) { |
Anders Carlsson | 89941c1 | 2009-02-07 23:16:50 +0000 | [diff] [blame] | 1015 | 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] | 1016 | Attr.getParameterName(); |
| 1017 | return; |
| 1018 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1019 | |
Anders Carlsson | 89941c1 | 2009-02-07 23:16:50 +0000 | [diff] [blame] | 1020 | // We're currently more strict than GCC about what function types we accept. |
| 1021 | // If this ever proves to be a problem it should be easy to fix. |
| 1022 | QualType Ty = S.Context.getPointerType(VD->getType()); |
| 1023 | QualType ParamTy = FD->getParamDecl(0)->getType(); |
Eli Friedman | d5e3e8e | 2009-04-26 01:30:08 +0000 | [diff] [blame] | 1024 | if (S.CheckAssignmentConstraints(ParamTy, Ty) != Sema::Compatible) { |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1025 | S.Diag(Attr.getLoc(), |
Anders Carlsson | 89941c1 | 2009-02-07 23:16:50 +0000 | [diff] [blame] | 1026 | diag::err_attribute_cleanup_func_arg_incompatible_type) << |
| 1027 | Attr.getParameterName() << ParamTy << Ty; |
| 1028 | return; |
| 1029 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1030 | |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 1031 | d->addAttr(::new (S.Context) CleanupAttr(FD)); |
Anders Carlsson | f6e35d0 | 2009-01-31 01:16:18 +0000 | [diff] [blame] | 1032 | } |
| 1033 | |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1034 | /// Handle __attribute__((format_arg((idx)))) attribute based on |
| 1035 | /// http://gcc.gnu.org/onlinedocs/gcc/Function-Attributes.html |
| 1036 | static void HandleFormatArgAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Fariborz Jahanian | 5b16092 | 2009-05-20 17:41:43 +0000 | [diff] [blame] | 1037 | if (Attr.getNumArgs() != 1) { |
| 1038 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; |
| 1039 | return; |
| 1040 | } |
| 1041 | if (!isFunctionOrMethod(d) || !hasFunctionProto(d)) { |
| 1042 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) |
| 1043 | << Attr.getName() << 0 /*function*/; |
| 1044 | return; |
| 1045 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1046 | // FIXME: in C++ the implicit 'this' function parameter also counts. this is |
| 1047 | // needed in order to be compatible with GCC the index must start with 1. |
Fariborz Jahanian | 5b16092 | 2009-05-20 17:41:43 +0000 | [diff] [blame] | 1048 | unsigned NumArgs = getFunctionOrMethodNumArgs(d); |
| 1049 | unsigned FirstIdx = 1; |
| 1050 | // checks for the 2nd argument |
| 1051 | Expr *IdxExpr = static_cast<Expr *>(Attr.getArg(0)); |
| 1052 | llvm::APSInt Idx(32); |
| 1053 | if (!IdxExpr->isIntegerConstantExpr(Idx, S.Context)) { |
| 1054 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_int) |
| 1055 | << "format" << 2 << IdxExpr->getSourceRange(); |
| 1056 | return; |
| 1057 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1058 | |
Fariborz Jahanian | 5b16092 | 2009-05-20 17:41:43 +0000 | [diff] [blame] | 1059 | if (Idx.getZExtValue() < FirstIdx || Idx.getZExtValue() > NumArgs) { |
| 1060 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_out_of_bounds) |
| 1061 | << "format" << 2 << IdxExpr->getSourceRange(); |
| 1062 | return; |
| 1063 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1064 | |
Fariborz Jahanian | 5b16092 | 2009-05-20 17:41:43 +0000 | [diff] [blame] | 1065 | unsigned ArgIdx = Idx.getZExtValue() - 1; |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1066 | |
Fariborz Jahanian | 5b16092 | 2009-05-20 17:41:43 +0000 | [diff] [blame] | 1067 | // make sure the format string is really a string |
| 1068 | QualType Ty = getFunctionOrMethodArgType(d, ArgIdx); |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1069 | |
Fariborz Jahanian | 5b16092 | 2009-05-20 17:41:43 +0000 | [diff] [blame] | 1070 | bool not_nsstring_type = !isNSStringType(Ty, S.Context); |
| 1071 | if (not_nsstring_type && |
| 1072 | !isCFStringType(Ty, S.Context) && |
| 1073 | (!Ty->isPointerType() || |
Ted Kremenek | 6217b80 | 2009-07-29 21:53:49 +0000 | [diff] [blame] | 1074 | !Ty->getAs<PointerType>()->getPointeeType()->isCharType())) { |
Fariborz Jahanian | 5b16092 | 2009-05-20 17:41:43 +0000 | [diff] [blame] | 1075 | // FIXME: Should highlight the actual expression that has the wrong type. |
| 1076 | S.Diag(Attr.getLoc(), diag::err_format_attribute_not) |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1077 | << (not_nsstring_type ? "a string type" : "an NSString") |
Fariborz Jahanian | 5b16092 | 2009-05-20 17:41:43 +0000 | [diff] [blame] | 1078 | << IdxExpr->getSourceRange(); |
| 1079 | return; |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1080 | } |
Fariborz Jahanian | 5b16092 | 2009-05-20 17:41:43 +0000 | [diff] [blame] | 1081 | Ty = getFunctionOrMethodResultType(d); |
| 1082 | if (!isNSStringType(Ty, S.Context) && |
| 1083 | !isCFStringType(Ty, S.Context) && |
| 1084 | (!Ty->isPointerType() || |
Ted Kremenek | 6217b80 | 2009-07-29 21:53:49 +0000 | [diff] [blame] | 1085 | !Ty->getAs<PointerType>()->getPointeeType()->isCharType())) { |
Fariborz Jahanian | 5b16092 | 2009-05-20 17:41:43 +0000 | [diff] [blame] | 1086 | // FIXME: Should highlight the actual expression that has the wrong type. |
| 1087 | S.Diag(Attr.getLoc(), diag::err_format_attribute_result_not) |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1088 | << (not_nsstring_type ? "string type" : "NSString") |
Fariborz Jahanian | 5b16092 | 2009-05-20 17:41:43 +0000 | [diff] [blame] | 1089 | << IdxExpr->getSourceRange(); |
| 1090 | return; |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1091 | } |
| 1092 | |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 1093 | d->addAttr(::new (S.Context) FormatArgAttr(Idx.getZExtValue())); |
Fariborz Jahanian | 5b16092 | 2009-05-20 17:41:43 +0000 | [diff] [blame] | 1094 | } |
| 1095 | |
Daniel Dunbar | 2b0d9a2 | 2009-10-18 02:09:17 +0000 | [diff] [blame] | 1096 | enum FormatAttrKind { |
| 1097 | CFStringFormat, |
| 1098 | NSStringFormat, |
| 1099 | StrftimeFormat, |
| 1100 | SupportedFormat, |
| 1101 | InvalidFormat |
| 1102 | }; |
| 1103 | |
| 1104 | /// getFormatAttrKind - Map from format attribute names to supported format |
| 1105 | /// types. |
| 1106 | static FormatAttrKind getFormatAttrKind(llvm::StringRef Format) { |
| 1107 | // Check for formats that get handled specially. |
| 1108 | if (Format == "NSString") |
| 1109 | return NSStringFormat; |
| 1110 | if (Format == "CFString") |
| 1111 | return CFStringFormat; |
| 1112 | if (Format == "strftime") |
| 1113 | return StrftimeFormat; |
| 1114 | |
| 1115 | // Otherwise, check for supported formats. |
| 1116 | if (Format == "scanf" || Format == "printf" || Format == "printf0" || |
| 1117 | Format == "strfmon" || Format == "cmn_err" || Format == "strftime" || |
| 1118 | Format == "NSString" || Format == "CFString" || Format == "vcmn_err" || |
| 1119 | Format == "zcmn_err") |
| 1120 | return SupportedFormat; |
| 1121 | |
| 1122 | return InvalidFormat; |
| 1123 | } |
| 1124 | |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1125 | /// Handle __attribute__((format(type,idx,firstarg))) attributes based on |
| 1126 | /// http://gcc.gnu.org/onlinedocs/gcc/Function-Attributes.html |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 1127 | static void HandleFormatAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1128 | |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 1129 | if (!Attr.getParameterName()) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 1130 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_string) |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 1131 | << "format" << 1; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1132 | return; |
| 1133 | } |
| 1134 | |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 1135 | if (Attr.getNumArgs() != 2) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 1136 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 3; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1137 | return; |
| 1138 | } |
| 1139 | |
Fariborz Jahanian | 620d89c | 2009-05-15 23:15:03 +0000 | [diff] [blame] | 1140 | if (!isFunctionOrMethodOrBlock(d) || !hasFunctionProto(d)) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 1141 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) |
Ted Kremenek | 5dc53c9 | 2009-05-13 21:07:32 +0000 | [diff] [blame] | 1142 | << Attr.getName() << 0 /*function*/; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1143 | return; |
| 1144 | } |
| 1145 | |
Daniel Dunbar | 3568249 | 2008-09-26 04:12:28 +0000 | [diff] [blame] | 1146 | unsigned NumArgs = getFunctionOrMethodNumArgs(d); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1147 | unsigned FirstIdx = 1; |
| 1148 | |
Daniel Dunbar | 01eb9b9 | 2009-10-18 21:17:35 +0000 | [diff] [blame] | 1149 | llvm::StringRef Format = Attr.getParameterName()->getName(); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1150 | |
| 1151 | // Normalize the argument, __foo__ becomes foo. |
Daniel Dunbar | 2b0d9a2 | 2009-10-18 02:09:17 +0000 | [diff] [blame] | 1152 | if (Format.startswith("__") && Format.endswith("__")) |
| 1153 | Format = Format.substr(2, Format.size() - 4); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1154 | |
Daniel Dunbar | 2b0d9a2 | 2009-10-18 02:09:17 +0000 | [diff] [blame] | 1155 | // Check for supported formats. |
| 1156 | FormatAttrKind Kind = getFormatAttrKind(Format); |
| 1157 | if (Kind == InvalidFormat) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 1158 | S.Diag(Attr.getLoc(), diag::warn_attribute_type_not_supported) |
Daniel Dunbar | 01eb9b9 | 2009-10-18 21:17:35 +0000 | [diff] [blame] | 1159 | << "format" << Attr.getParameterName()->getName(); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1160 | return; |
| 1161 | } |
| 1162 | |
| 1163 | // checks for the 2nd argument |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 1164 | Expr *IdxExpr = static_cast<Expr *>(Attr.getArg(0)); |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 1165 | llvm::APSInt Idx(32); |
| 1166 | if (!IdxExpr->isIntegerConstantExpr(Idx, S.Context)) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 1167 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_int) |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 1168 | << "format" << 2 << IdxExpr->getSourceRange(); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1169 | return; |
| 1170 | } |
| 1171 | |
Anders Carlsson | 4fb7720 | 2009-08-25 14:12:34 +0000 | [diff] [blame] | 1172 | // FIXME: We should handle the implicit 'this' parameter in a more generic |
| 1173 | // way that can be used for other arguments. |
| 1174 | bool HasImplicitThisParam = false; |
| 1175 | if (CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(d)) { |
| 1176 | if (MD->isInstance()) { |
| 1177 | HasImplicitThisParam = true; |
| 1178 | NumArgs++; |
| 1179 | } |
| 1180 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1181 | |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1182 | if (Idx.getZExtValue() < FirstIdx || Idx.getZExtValue() > NumArgs) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 1183 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_out_of_bounds) |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 1184 | << "format" << 2 << IdxExpr->getSourceRange(); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1185 | return; |
| 1186 | } |
| 1187 | |
| 1188 | // FIXME: Do we need to bounds check? |
| 1189 | unsigned ArgIdx = Idx.getZExtValue() - 1; |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1190 | |
Sebastian Redl | 4a2614e | 2009-11-17 18:02:24 +0000 | [diff] [blame] | 1191 | if (HasImplicitThisParam) { |
| 1192 | if (ArgIdx == 0) { |
| 1193 | S.Diag(Attr.getLoc(), diag::err_format_attribute_not) |
| 1194 | << "a string type" << IdxExpr->getSourceRange(); |
| 1195 | return; |
| 1196 | } |
| 1197 | ArgIdx--; |
| 1198 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1199 | |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1200 | // make sure the format string is really a string |
Daniel Dunbar | 3568249 | 2008-09-26 04:12:28 +0000 | [diff] [blame] | 1201 | QualType Ty = getFunctionOrMethodArgType(d, ArgIdx); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1202 | |
Daniel Dunbar | 2b0d9a2 | 2009-10-18 02:09:17 +0000 | [diff] [blame] | 1203 | if (Kind == CFStringFormat) { |
Daniel Dunbar | 085e8f7 | 2008-09-26 03:32:58 +0000 | [diff] [blame] | 1204 | if (!isCFStringType(Ty, S.Context)) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 1205 | S.Diag(Attr.getLoc(), diag::err_format_attribute_not) |
| 1206 | << "a CFString" << IdxExpr->getSourceRange(); |
Daniel Dunbar | 085e8f7 | 2008-09-26 03:32:58 +0000 | [diff] [blame] | 1207 | return; |
| 1208 | } |
Daniel Dunbar | 2b0d9a2 | 2009-10-18 02:09:17 +0000 | [diff] [blame] | 1209 | } else if (Kind == NSStringFormat) { |
Mike Stump | 390b4cc | 2009-05-16 07:39:55 +0000 | [diff] [blame] | 1210 | // FIXME: do we need to check if the type is NSString*? What are the |
| 1211 | // semantics? |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 1212 | if (!isNSStringType(Ty, S.Context)) { |
Mike Stump | 390b4cc | 2009-05-16 07:39:55 +0000 | [diff] [blame] | 1213 | // FIXME: Should highlight the actual expression that has the wrong type. |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 1214 | S.Diag(Attr.getLoc(), diag::err_format_attribute_not) |
| 1215 | << "an NSString" << IdxExpr->getSourceRange(); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1216 | return; |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1217 | } |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1218 | } else if (!Ty->isPointerType() || |
Ted Kremenek | 6217b80 | 2009-07-29 21:53:49 +0000 | [diff] [blame] | 1219 | !Ty->getAs<PointerType>()->getPointeeType()->isCharType()) { |
Mike Stump | 390b4cc | 2009-05-16 07:39:55 +0000 | [diff] [blame] | 1220 | // FIXME: Should highlight the actual expression that has the wrong type. |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 1221 | S.Diag(Attr.getLoc(), diag::err_format_attribute_not) |
| 1222 | << "a string type" << IdxExpr->getSourceRange(); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1223 | return; |
| 1224 | } |
| 1225 | |
| 1226 | // check the 3rd argument |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 1227 | Expr *FirstArgExpr = static_cast<Expr *>(Attr.getArg(1)); |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 1228 | llvm::APSInt FirstArg(32); |
| 1229 | if (!FirstArgExpr->isIntegerConstantExpr(FirstArg, S.Context)) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 1230 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_int) |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 1231 | << "format" << 3 << FirstArgExpr->getSourceRange(); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1232 | return; |
| 1233 | } |
| 1234 | |
| 1235 | // check if the function is variadic if the 3rd argument non-zero |
| 1236 | if (FirstArg != 0) { |
Daniel Dunbar | 3568249 | 2008-09-26 04:12:28 +0000 | [diff] [blame] | 1237 | if (isFunctionOrMethodVariadic(d)) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1238 | ++NumArgs; // +1 for ... |
| 1239 | } else { |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 1240 | S.Diag(d->getLocation(), diag::err_format_attribute_requires_variadic); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1241 | return; |
| 1242 | } |
| 1243 | } |
| 1244 | |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 1245 | // strftime requires FirstArg to be 0 because it doesn't read from any |
| 1246 | // variable the input is just the current time + the format string. |
Daniel Dunbar | 2b0d9a2 | 2009-10-18 02:09:17 +0000 | [diff] [blame] | 1247 | if (Kind == StrftimeFormat) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1248 | if (FirstArg != 0) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 1249 | S.Diag(Attr.getLoc(), diag::err_format_strftime_third_parameter) |
| 1250 | << FirstArgExpr->getSourceRange(); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1251 | return; |
| 1252 | } |
| 1253 | // if 0 it disables parameter checking (to use with e.g. va_list) |
| 1254 | } else if (FirstArg != 0 && FirstArg != NumArgs) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 1255 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_out_of_bounds) |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 1256 | << "format" << 3 << FirstArgExpr->getSourceRange(); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1257 | return; |
| 1258 | } |
| 1259 | |
Daniel Dunbar | 2b0d9a2 | 2009-10-18 02:09:17 +0000 | [diff] [blame] | 1260 | d->addAttr(::new (S.Context) FormatAttr(Format, Idx.getZExtValue(), |
| 1261 | FirstArg.getZExtValue())); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1262 | } |
| 1263 | |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 1264 | static void HandleTransparentUnionAttr(Decl *d, const AttributeList &Attr, |
| 1265 | Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1266 | // check the attribute arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 1267 | if (Attr.getNumArgs() != 0) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 1268 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1269 | return; |
| 1270 | } |
| 1271 | |
Douglas Gregor | 0c74e8a | 2009-04-29 22:16:16 +0000 | [diff] [blame] | 1272 | // Try to find the underlying union declaration. |
| 1273 | RecordDecl *RD = 0; |
Eli Friedman | bc88745 | 2008-09-02 05:19:23 +0000 | [diff] [blame] | 1274 | TypedefDecl *TD = dyn_cast<TypedefDecl>(d); |
Douglas Gregor | 0c74e8a | 2009-04-29 22:16:16 +0000 | [diff] [blame] | 1275 | if (TD && TD->getUnderlyingType()->isUnionType()) |
| 1276 | RD = TD->getUnderlyingType()->getAsUnionType()->getDecl(); |
| 1277 | else |
| 1278 | RD = dyn_cast<RecordDecl>(d); |
| 1279 | |
| 1280 | if (!RD || !RD->isUnion()) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 1281 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) |
Ted Kremenek | 5dc53c9 | 2009-05-13 21:07:32 +0000 | [diff] [blame] | 1282 | << Attr.getName() << 1 /*union*/; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1283 | return; |
| 1284 | } |
| 1285 | |
Douglas Gregor | 0c74e8a | 2009-04-29 22:16:16 +0000 | [diff] [blame] | 1286 | if (!RD->isDefinition()) { |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1287 | S.Diag(Attr.getLoc(), |
Douglas Gregor | 0c74e8a | 2009-04-29 22:16:16 +0000 | [diff] [blame] | 1288 | diag::warn_transparent_union_attribute_not_definition); |
| 1289 | return; |
| 1290 | } |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1291 | |
Argyrios Kyrtzidis | 17945a0 | 2009-06-30 02:36:12 +0000 | [diff] [blame] | 1292 | RecordDecl::field_iterator Field = RD->field_begin(), |
| 1293 | FieldEnd = RD->field_end(); |
Douglas Gregor | 0c74e8a | 2009-04-29 22:16:16 +0000 | [diff] [blame] | 1294 | if (Field == FieldEnd) { |
| 1295 | S.Diag(Attr.getLoc(), diag::warn_transparent_union_attribute_zero_fields); |
| 1296 | return; |
| 1297 | } |
Eli Friedman | bc88745 | 2008-09-02 05:19:23 +0000 | [diff] [blame] | 1298 | |
Douglas Gregor | 0c74e8a | 2009-04-29 22:16:16 +0000 | [diff] [blame] | 1299 | FieldDecl *FirstField = *Field; |
| 1300 | QualType FirstType = FirstField->getType(); |
| 1301 | if (FirstType->isFloatingType() || FirstType->isVectorType()) { |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1302 | S.Diag(FirstField->getLocation(), |
Douglas Gregor | 0c74e8a | 2009-04-29 22:16:16 +0000 | [diff] [blame] | 1303 | diag::warn_transparent_union_attribute_floating); |
| 1304 | return; |
| 1305 | } |
| 1306 | |
| 1307 | uint64_t FirstSize = S.Context.getTypeSize(FirstType); |
| 1308 | uint64_t FirstAlign = S.Context.getTypeAlign(FirstType); |
| 1309 | for (; Field != FieldEnd; ++Field) { |
| 1310 | QualType FieldType = Field->getType(); |
| 1311 | if (S.Context.getTypeSize(FieldType) != FirstSize || |
| 1312 | S.Context.getTypeAlign(FieldType) != FirstAlign) { |
| 1313 | // Warn if we drop the attribute. |
| 1314 | bool isSize = S.Context.getTypeSize(FieldType) != FirstSize; |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1315 | unsigned FieldBits = isSize? S.Context.getTypeSize(FieldType) |
Douglas Gregor | 0c74e8a | 2009-04-29 22:16:16 +0000 | [diff] [blame] | 1316 | : S.Context.getTypeAlign(FieldType); |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1317 | S.Diag(Field->getLocation(), |
Douglas Gregor | 0c74e8a | 2009-04-29 22:16:16 +0000 | [diff] [blame] | 1318 | diag::warn_transparent_union_attribute_field_size_align) |
| 1319 | << isSize << Field->getDeclName() << FieldBits; |
| 1320 | unsigned FirstBits = isSize? FirstSize : FirstAlign; |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1321 | S.Diag(FirstField->getLocation(), |
Douglas Gregor | 0c74e8a | 2009-04-29 22:16:16 +0000 | [diff] [blame] | 1322 | diag::note_transparent_union_first_field_size_align) |
| 1323 | << isSize << FirstBits; |
Eli Friedman | bc88745 | 2008-09-02 05:19:23 +0000 | [diff] [blame] | 1324 | return; |
| 1325 | } |
| 1326 | } |
| 1327 | |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 1328 | RD->addAttr(::new (S.Context) TransparentUnionAttr()); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1329 | } |
| 1330 | |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 1331 | static void HandleAnnotateAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1332 | // check the attribute arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 1333 | if (Attr.getNumArgs() != 1) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 1334 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1335 | return; |
| 1336 | } |
Chris Lattner | 797c3c4 | 2009-08-10 19:03:04 +0000 | [diff] [blame] | 1337 | Expr *ArgExpr = static_cast<Expr *>(Attr.getArg(0)); |
| 1338 | StringLiteral *SE = dyn_cast<StringLiteral>(ArgExpr); |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1339 | |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1340 | // Make sure that there is a string literal as the annotation's single |
| 1341 | // argument. |
| 1342 | if (!SE) { |
Chris Lattner | 797c3c4 | 2009-08-10 19:03:04 +0000 | [diff] [blame] | 1343 | S.Diag(ArgExpr->getLocStart(), diag::err_attribute_not_string) <<"annotate"; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1344 | return; |
| 1345 | } |
Benjamin Kramer | bb377ed | 2009-11-30 17:08:26 +0000 | [diff] [blame] | 1346 | d->addAttr(::new (S.Context) AnnotateAttr(SE->getString())); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1347 | } |
| 1348 | |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 1349 | static void HandleAlignedAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1350 | // check the attribute arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 1351 | if (Attr.getNumArgs() > 1) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 1352 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1353 | return; |
| 1354 | } |
Sean Hunt | bbd37c6 | 2009-11-21 08:43:09 +0000 | [diff] [blame] | 1355 | |
| 1356 | //FIXME: The C++0x version of this attribute has more limited applicabilty |
| 1357 | // than GNU's, and should error out when it is used to specify a |
| 1358 | // weaker alignment, rather than being silently ignored. |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1359 | |
| 1360 | unsigned Align = 0; |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 1361 | if (Attr.getNumArgs() == 0) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1362 | // FIXME: This should be the target specific maximum alignment. |
Daniel Dunbar | 7549c55 | 2009-02-18 20:06:09 +0000 | [diff] [blame] | 1363 | // (For now we just use 128 bits which is the maximum on X86). |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1364 | Align = 128; |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 1365 | d->addAttr(::new (S.Context) AlignedAttr(Align)); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1366 | return; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1367 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1368 | |
Chris Lattner | 49e2d34 | 2008-06-28 23:50:44 +0000 | [diff] [blame] | 1369 | Expr *alignmentExpr = static_cast<Expr *>(Attr.getArg(0)); |
| 1370 | llvm::APSInt Alignment(32); |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 1371 | if (!alignmentExpr->isIntegerConstantExpr(Alignment, S.Context)) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 1372 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_not_int) |
| 1373 | << "aligned" << alignmentExpr->getSourceRange(); |
Chris Lattner | 49e2d34 | 2008-06-28 23:50:44 +0000 | [diff] [blame] | 1374 | return; |
| 1375 | } |
Daniel Dunbar | 396b2a2 | 2009-02-16 23:37:57 +0000 | [diff] [blame] | 1376 | if (!llvm::isPowerOf2_64(Alignment.getZExtValue())) { |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1377 | S.Diag(Attr.getLoc(), diag::err_attribute_aligned_not_power_of_two) |
Daniel Dunbar | 396b2a2 | 2009-02-16 23:37:57 +0000 | [diff] [blame] | 1378 | << alignmentExpr->getSourceRange(); |
| 1379 | return; |
| 1380 | } |
| 1381 | |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 1382 | d->addAttr(::new (S.Context) AlignedAttr(Alignment.getZExtValue() * 8)); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1383 | } |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1384 | |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1385 | /// HandleModeAttr - This attribute modifies the width of a decl with primitive |
| 1386 | /// type. |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1387 | /// |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1388 | /// Despite what would be logical, the mode attribute is a decl attribute, not a |
| 1389 | /// type attribute: 'int ** __attribute((mode(HI))) *G;' tries to make 'G' be |
| 1390 | /// HImode, not an intermediate pointer. |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 1391 | static void HandleModeAttr(Decl *D, const AttributeList &Attr, Sema &S) { |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1392 | // This attribute isn't documented, but glibc uses it. It changes |
| 1393 | // the width of an int or unsigned int to the specified size. |
| 1394 | |
| 1395 | // Check that there aren't any arguments |
| 1396 | if (Attr.getNumArgs() != 0) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 1397 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1398 | return; |
| 1399 | } |
| 1400 | |
| 1401 | IdentifierInfo *Name = Attr.getParameterName(); |
| 1402 | if (!Name) { |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 1403 | S.Diag(Attr.getLoc(), diag::err_attribute_missing_parameter_name); |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1404 | return; |
| 1405 | } |
Daniel Dunbar | 210ae98 | 2009-10-18 02:09:24 +0000 | [diff] [blame] | 1406 | |
Daniel Dunbar | 01eb9b9 | 2009-10-18 21:17:35 +0000 | [diff] [blame] | 1407 | llvm::StringRef Str = Attr.getParameterName()->getName(); |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1408 | |
| 1409 | // Normalize the attribute name, __foo__ becomes foo. |
Daniel Dunbar | 210ae98 | 2009-10-18 02:09:24 +0000 | [diff] [blame] | 1410 | if (Str.startswith("__") && Str.endswith("__")) |
| 1411 | Str = Str.substr(2, Str.size() - 4); |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1412 | |
| 1413 | unsigned DestWidth = 0; |
| 1414 | bool IntegerMode = true; |
Eli Friedman | 7339749 | 2009-03-03 06:41:03 +0000 | [diff] [blame] | 1415 | bool ComplexMode = false; |
Daniel Dunbar | 210ae98 | 2009-10-18 02:09:24 +0000 | [diff] [blame] | 1416 | switch (Str.size()) { |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1417 | case 2: |
Eli Friedman | 7339749 | 2009-03-03 06:41:03 +0000 | [diff] [blame] | 1418 | switch (Str[0]) { |
| 1419 | case 'Q': DestWidth = 8; break; |
| 1420 | case 'H': DestWidth = 16; break; |
| 1421 | case 'S': DestWidth = 32; break; |
| 1422 | case 'D': DestWidth = 64; break; |
| 1423 | case 'X': DestWidth = 96; break; |
| 1424 | case 'T': DestWidth = 128; break; |
| 1425 | } |
| 1426 | if (Str[1] == 'F') { |
| 1427 | IntegerMode = false; |
| 1428 | } else if (Str[1] == 'C') { |
| 1429 | IntegerMode = false; |
| 1430 | ComplexMode = true; |
| 1431 | } else if (Str[1] != 'I') { |
| 1432 | DestWidth = 0; |
| 1433 | } |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1434 | break; |
| 1435 | case 4: |
| 1436 | // FIXME: glibc uses 'word' to define register_t; this is narrower than a |
| 1437 | // pointer on PIC16 and other embedded platforms. |
Daniel Dunbar | 210ae98 | 2009-10-18 02:09:24 +0000 | [diff] [blame] | 1438 | if (Str == "word") |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 1439 | DestWidth = S.Context.Target.getPointerWidth(0); |
Daniel Dunbar | 210ae98 | 2009-10-18 02:09:24 +0000 | [diff] [blame] | 1440 | else if (Str == "byte") |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 1441 | DestWidth = S.Context.Target.getCharWidth(); |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1442 | break; |
| 1443 | case 7: |
Daniel Dunbar | 210ae98 | 2009-10-18 02:09:24 +0000 | [diff] [blame] | 1444 | if (Str == "pointer") |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 1445 | DestWidth = S.Context.Target.getPointerWidth(0); |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1446 | break; |
| 1447 | } |
| 1448 | |
| 1449 | QualType OldTy; |
| 1450 | if (TypedefDecl *TD = dyn_cast<TypedefDecl>(D)) |
| 1451 | OldTy = TD->getUnderlyingType(); |
| 1452 | else if (ValueDecl *VD = dyn_cast<ValueDecl>(D)) |
| 1453 | OldTy = VD->getType(); |
| 1454 | else { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 1455 | S.Diag(D->getLocation(), diag::err_attr_wrong_decl) |
| 1456 | << "mode" << SourceRange(Attr.getLoc(), Attr.getLoc()); |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1457 | return; |
| 1458 | } |
Eli Friedman | 7339749 | 2009-03-03 06:41:03 +0000 | [diff] [blame] | 1459 | |
John McCall | 183700f | 2009-09-21 23:43:11 +0000 | [diff] [blame] | 1460 | if (!OldTy->getAs<BuiltinType>() && !OldTy->isComplexType()) |
Eli Friedman | 7339749 | 2009-03-03 06:41:03 +0000 | [diff] [blame] | 1461 | S.Diag(Attr.getLoc(), diag::err_mode_not_primitive); |
| 1462 | else if (IntegerMode) { |
| 1463 | if (!OldTy->isIntegralType()) |
| 1464 | S.Diag(Attr.getLoc(), diag::err_mode_wrong_type); |
| 1465 | } else if (ComplexMode) { |
| 1466 | if (!OldTy->isComplexType()) |
| 1467 | S.Diag(Attr.getLoc(), diag::err_mode_wrong_type); |
| 1468 | } else { |
| 1469 | if (!OldTy->isFloatingType()) |
| 1470 | S.Diag(Attr.getLoc(), diag::err_mode_wrong_type); |
| 1471 | } |
| 1472 | |
Mike Stump | 390b4cc | 2009-05-16 07:39:55 +0000 | [diff] [blame] | 1473 | // FIXME: Sync this with InitializePredefinedMacros; we need to match int8_t |
| 1474 | // and friends, at least with glibc. |
| 1475 | // FIXME: Make sure 32/64-bit integers don't get defined to types of the wrong |
| 1476 | // width on unusual platforms. |
Eli Friedman | f98aba3 | 2009-02-13 02:31:07 +0000 | [diff] [blame] | 1477 | // FIXME: Make sure floating-point mappings are accurate |
| 1478 | // FIXME: Support XF and TF types |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1479 | QualType NewTy; |
| 1480 | switch (DestWidth) { |
| 1481 | case 0: |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 1482 | S.Diag(Attr.getLoc(), diag::err_unknown_machine_mode) << Name; |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1483 | return; |
| 1484 | default: |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 1485 | S.Diag(Attr.getLoc(), diag::err_unsupported_machine_mode) << Name; |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1486 | return; |
| 1487 | case 8: |
Eli Friedman | 7339749 | 2009-03-03 06:41:03 +0000 | [diff] [blame] | 1488 | if (!IntegerMode) { |
| 1489 | S.Diag(Attr.getLoc(), diag::err_unsupported_machine_mode) << Name; |
| 1490 | return; |
| 1491 | } |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1492 | if (OldTy->isSignedIntegerType()) |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 1493 | NewTy = S.Context.SignedCharTy; |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1494 | else |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 1495 | NewTy = S.Context.UnsignedCharTy; |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1496 | break; |
| 1497 | case 16: |
Eli Friedman | 7339749 | 2009-03-03 06:41:03 +0000 | [diff] [blame] | 1498 | if (!IntegerMode) { |
| 1499 | S.Diag(Attr.getLoc(), diag::err_unsupported_machine_mode) << Name; |
| 1500 | return; |
| 1501 | } |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1502 | if (OldTy->isSignedIntegerType()) |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 1503 | NewTy = S.Context.ShortTy; |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1504 | else |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 1505 | NewTy = S.Context.UnsignedShortTy; |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1506 | break; |
| 1507 | case 32: |
| 1508 | if (!IntegerMode) |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 1509 | NewTy = S.Context.FloatTy; |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1510 | else if (OldTy->isSignedIntegerType()) |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 1511 | NewTy = S.Context.IntTy; |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1512 | else |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 1513 | NewTy = S.Context.UnsignedIntTy; |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1514 | break; |
| 1515 | case 64: |
| 1516 | if (!IntegerMode) |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 1517 | NewTy = S.Context.DoubleTy; |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1518 | else if (OldTy->isSignedIntegerType()) |
Chandler Carruth | aec7caa | 2010-01-26 06:39:24 +0000 | [diff] [blame] | 1519 | if (S.Context.Target.getLongWidth() == 64) |
| 1520 | NewTy = S.Context.LongTy; |
| 1521 | else |
| 1522 | NewTy = S.Context.LongLongTy; |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1523 | else |
Chandler Carruth | aec7caa | 2010-01-26 06:39:24 +0000 | [diff] [blame] | 1524 | if (S.Context.Target.getLongWidth() == 64) |
| 1525 | NewTy = S.Context.UnsignedLongTy; |
| 1526 | else |
| 1527 | NewTy = S.Context.UnsignedLongLongTy; |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1528 | break; |
Eli Friedman | 7339749 | 2009-03-03 06:41:03 +0000 | [diff] [blame] | 1529 | case 96: |
| 1530 | NewTy = S.Context.LongDoubleTy; |
| 1531 | break; |
Eli Friedman | f98aba3 | 2009-02-13 02:31:07 +0000 | [diff] [blame] | 1532 | case 128: |
| 1533 | if (!IntegerMode) { |
| 1534 | S.Diag(Attr.getLoc(), diag::err_unsupported_machine_mode) << Name; |
| 1535 | return; |
| 1536 | } |
Anders Carlsson | f5f7d86 | 2009-12-29 07:07:36 +0000 | [diff] [blame] | 1537 | if (OldTy->isSignedIntegerType()) |
| 1538 | NewTy = S.Context.Int128Ty; |
| 1539 | else |
| 1540 | NewTy = S.Context.UnsignedInt128Ty; |
Eli Friedman | 7339749 | 2009-03-03 06:41:03 +0000 | [diff] [blame] | 1541 | break; |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1542 | } |
| 1543 | |
Eli Friedman | 7339749 | 2009-03-03 06:41:03 +0000 | [diff] [blame] | 1544 | if (ComplexMode) { |
| 1545 | NewTy = S.Context.getComplexType(NewTy); |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1546 | } |
| 1547 | |
| 1548 | // Install the new type. |
John McCall | ba6a9bd | 2009-10-24 08:00:42 +0000 | [diff] [blame] | 1549 | if (TypedefDecl *TD = dyn_cast<TypedefDecl>(D)) { |
| 1550 | // FIXME: preserve existing source info. |
John McCall | a93c934 | 2009-12-07 02:54:59 +0000 | [diff] [blame] | 1551 | TD->setTypeSourceInfo(S.Context.getTrivialTypeSourceInfo(NewTy)); |
John McCall | ba6a9bd | 2009-10-24 08:00:42 +0000 | [diff] [blame] | 1552 | } else |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1553 | cast<ValueDecl>(D)->setType(NewTy); |
| 1554 | } |
Chris Lattner | 0744e5f | 2008-06-29 00:23:49 +0000 | [diff] [blame] | 1555 | |
Mike Stump | 1feade8 | 2009-08-26 22:31:08 +0000 | [diff] [blame] | 1556 | static void HandleNoDebugAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Anders Carlsson | d87df37 | 2009-02-13 06:46:13 +0000 | [diff] [blame] | 1557 | // check the attribute arguments. |
| 1558 | if (Attr.getNumArgs() > 0) { |
| 1559 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
| 1560 | return; |
| 1561 | } |
Anders Carlsson | e896d98 | 2009-02-13 08:11:52 +0000 | [diff] [blame] | 1562 | |
Anders Carlsson | 5bab788 | 2009-02-19 19:16:48 +0000 | [diff] [blame] | 1563 | if (!isFunctionOrMethod(d)) { |
Anders Carlsson | d87df37 | 2009-02-13 06:46:13 +0000 | [diff] [blame] | 1564 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) |
Ted Kremenek | 5dc53c9 | 2009-05-13 21:07:32 +0000 | [diff] [blame] | 1565 | << Attr.getName() << 0 /*function*/; |
Anders Carlsson | d87df37 | 2009-02-13 06:46:13 +0000 | [diff] [blame] | 1566 | return; |
| 1567 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1568 | |
Mike Stump | 1feade8 | 2009-08-26 22:31:08 +0000 | [diff] [blame] | 1569 | d->addAttr(::new (S.Context) NoDebugAttr()); |
Anders Carlsson | d87df37 | 2009-02-13 06:46:13 +0000 | [diff] [blame] | 1570 | } |
| 1571 | |
Mike Stump | 1feade8 | 2009-08-26 22:31:08 +0000 | [diff] [blame] | 1572 | static void HandleNoInlineAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Anders Carlsson | 5bab788 | 2009-02-19 19:16:48 +0000 | [diff] [blame] | 1573 | // check the attribute arguments. |
| 1574 | if (Attr.getNumArgs() != 0) { |
| 1575 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
| 1576 | return; |
| 1577 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1578 | |
Chris Lattner | c519743 | 2009-04-14 17:02:11 +0000 | [diff] [blame] | 1579 | if (!isa<FunctionDecl>(d)) { |
Anders Carlsson | 5bab788 | 2009-02-19 19:16:48 +0000 | [diff] [blame] | 1580 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) |
Ted Kremenek | 5dc53c9 | 2009-05-13 21:07:32 +0000 | [diff] [blame] | 1581 | << Attr.getName() << 0 /*function*/; |
Anders Carlsson | 5bab788 | 2009-02-19 19:16:48 +0000 | [diff] [blame] | 1582 | return; |
| 1583 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1584 | |
Mike Stump | 1feade8 | 2009-08-26 22:31:08 +0000 | [diff] [blame] | 1585 | d->addAttr(::new (S.Context) NoInlineAttr()); |
Anders Carlsson | 5bab788 | 2009-02-19 19:16:48 +0000 | [diff] [blame] | 1586 | } |
| 1587 | |
Chris Lattner | cf2a721 | 2009-04-20 19:12:28 +0000 | [diff] [blame] | 1588 | static void HandleGNUInlineAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Chris Lattner | 26e2554 | 2009-04-14 16:30:50 +0000 | [diff] [blame] | 1589 | // check the attribute arguments. |
| 1590 | if (Attr.getNumArgs() != 0) { |
| 1591 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
| 1592 | return; |
| 1593 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1594 | |
Chris Lattner | c519743 | 2009-04-14 17:02:11 +0000 | [diff] [blame] | 1595 | FunctionDecl *Fn = dyn_cast<FunctionDecl>(d); |
| 1596 | if (Fn == 0) { |
Chris Lattner | 26e2554 | 2009-04-14 16:30:50 +0000 | [diff] [blame] | 1597 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) |
Ted Kremenek | 5dc53c9 | 2009-05-13 21:07:32 +0000 | [diff] [blame] | 1598 | << Attr.getName() << 0 /*function*/; |
Chris Lattner | 26e2554 | 2009-04-14 16:30:50 +0000 | [diff] [blame] | 1599 | return; |
| 1600 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1601 | |
Douglas Gregor | 0130f3c | 2009-10-27 21:01:01 +0000 | [diff] [blame] | 1602 | if (!Fn->isInlineSpecified()) { |
Chris Lattner | cf2a721 | 2009-04-20 19:12:28 +0000 | [diff] [blame] | 1603 | S.Diag(Attr.getLoc(), diag::warn_gnu_inline_attribute_requires_inline); |
Chris Lattner | c519743 | 2009-04-14 17:02:11 +0000 | [diff] [blame] | 1604 | return; |
| 1605 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1606 | |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 1607 | d->addAttr(::new (S.Context) GNUInlineAttr()); |
Chris Lattner | 26e2554 | 2009-04-14 16:30:50 +0000 | [diff] [blame] | 1608 | } |
| 1609 | |
Fariborz Jahanian | ee76033 | 2009-03-27 18:38:55 +0000 | [diff] [blame] | 1610 | static void HandleRegparmAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
| 1611 | // check the attribute arguments. |
| 1612 | if (Attr.getNumArgs() != 1) { |
Eli Friedman | 55d3aaf | 2009-03-27 21:06:47 +0000 | [diff] [blame] | 1613 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; |
Fariborz Jahanian | ee76033 | 2009-03-27 18:38:55 +0000 | [diff] [blame] | 1614 | return; |
| 1615 | } |
Eli Friedman | 55d3aaf | 2009-03-27 21:06:47 +0000 | [diff] [blame] | 1616 | |
Fariborz Jahanian | ee76033 | 2009-03-27 18:38:55 +0000 | [diff] [blame] | 1617 | if (!isFunctionOrMethod(d)) { |
| 1618 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) |
Ted Kremenek | 5dc53c9 | 2009-05-13 21:07:32 +0000 | [diff] [blame] | 1619 | << Attr.getName() << 0 /*function*/; |
Fariborz Jahanian | ee76033 | 2009-03-27 18:38:55 +0000 | [diff] [blame] | 1620 | return; |
| 1621 | } |
Eli Friedman | 55d3aaf | 2009-03-27 21:06:47 +0000 | [diff] [blame] | 1622 | |
| 1623 | Expr *NumParamsExpr = static_cast<Expr *>(Attr.getArg(0)); |
| 1624 | llvm::APSInt NumParams(32); |
| 1625 | if (!NumParamsExpr->isIntegerConstantExpr(NumParams, S.Context)) { |
| 1626 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_not_int) |
| 1627 | << "regparm" << NumParamsExpr->getSourceRange(); |
| 1628 | return; |
| 1629 | } |
| 1630 | |
Anton Korobeynikov | 264a76c | 2009-04-03 23:38:25 +0000 | [diff] [blame] | 1631 | if (S.Context.Target.getRegParmMax() == 0) { |
| 1632 | S.Diag(Attr.getLoc(), diag::err_attribute_regparm_wrong_platform) |
Eli Friedman | 55d3aaf | 2009-03-27 21:06:47 +0000 | [diff] [blame] | 1633 | << NumParamsExpr->getSourceRange(); |
| 1634 | return; |
| 1635 | } |
| 1636 | |
Anton Korobeynikov | 348f28a | 2009-04-04 10:27:50 +0000 | [diff] [blame] | 1637 | if (NumParams.getLimitedValue(255) > S.Context.Target.getRegParmMax()) { |
Anton Korobeynikov | 264a76c | 2009-04-03 23:38:25 +0000 | [diff] [blame] | 1638 | S.Diag(Attr.getLoc(), diag::err_attribute_regparm_invalid_number) |
| 1639 | << S.Context.Target.getRegParmMax() << NumParamsExpr->getSourceRange(); |
Eli Friedman | 55d3aaf | 2009-03-27 21:06:47 +0000 | [diff] [blame] | 1640 | return; |
| 1641 | } |
| 1642 | |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 1643 | d->addAttr(::new (S.Context) RegparmAttr(NumParams.getZExtValue())); |
Fariborz Jahanian | ee76033 | 2009-03-27 18:38:55 +0000 | [diff] [blame] | 1644 | } |
| 1645 | |
Sean Hunt | bbd37c6 | 2009-11-21 08:43:09 +0000 | [diff] [blame] | 1646 | static void HandleFinalAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
| 1647 | // check the attribute arguments. |
| 1648 | if (Attr.getNumArgs() != 0) { |
| 1649 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
| 1650 | return; |
| 1651 | } |
| 1652 | |
| 1653 | if (!isa<CXXRecordDecl>(d) |
| 1654 | && (!isa<CXXMethodDecl>(d) || !cast<CXXMethodDecl>(d)->isVirtual())) { |
| 1655 | S.Diag(Attr.getLoc(), |
| 1656 | Attr.isCXX0XAttribute() ? diag::err_attribute_wrong_decl_type |
| 1657 | : diag::warn_attribute_wrong_decl_type) |
| 1658 | << Attr.getName() << 7 /*virtual method or class*/; |
| 1659 | return; |
| 1660 | } |
Sean Hunt | 7725e67 | 2009-11-25 04:20:27 +0000 | [diff] [blame] | 1661 | |
| 1662 | // FIXME: Conform to C++0x redeclaration rules. |
| 1663 | |
| 1664 | if (d->getAttr<FinalAttr>()) { |
| 1665 | S.Diag(Attr.getLoc(), diag::err_repeat_attribute) << "final"; |
| 1666 | return; |
| 1667 | } |
Sean Hunt | bbd37c6 | 2009-11-21 08:43:09 +0000 | [diff] [blame] | 1668 | |
| 1669 | d->addAttr(::new (S.Context) FinalAttr()); |
| 1670 | } |
| 1671 | |
Chris Lattner | 0744e5f | 2008-06-29 00:23:49 +0000 | [diff] [blame] | 1672 | //===----------------------------------------------------------------------===// |
Sean Hunt | 7725e67 | 2009-11-25 04:20:27 +0000 | [diff] [blame] | 1673 | // C++0x member checking attributes |
| 1674 | //===----------------------------------------------------------------------===// |
| 1675 | |
| 1676 | static void HandleBaseCheckAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
| 1677 | if (Attr.getNumArgs() != 0) { |
| 1678 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
| 1679 | return; |
| 1680 | } |
| 1681 | |
| 1682 | if (!isa<CXXRecordDecl>(d)) { |
| 1683 | S.Diag(Attr.getLoc(), |
| 1684 | Attr.isCXX0XAttribute() ? diag::err_attribute_wrong_decl_type |
| 1685 | : diag::warn_attribute_wrong_decl_type) |
| 1686 | << Attr.getName() << 9 /*class*/; |
| 1687 | return; |
| 1688 | } |
| 1689 | |
| 1690 | if (d->getAttr<BaseCheckAttr>()) { |
| 1691 | S.Diag(Attr.getLoc(), diag::err_repeat_attribute) << "base_check"; |
| 1692 | return; |
| 1693 | } |
| 1694 | |
| 1695 | d->addAttr(::new (S.Context) BaseCheckAttr()); |
| 1696 | } |
| 1697 | |
| 1698 | static void HandleHidingAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
| 1699 | if (Attr.getNumArgs() != 0) { |
| 1700 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
| 1701 | return; |
| 1702 | } |
| 1703 | |
| 1704 | if (!isa<RecordDecl>(d->getDeclContext())) { |
| 1705 | // FIXME: It's not the type that's the problem |
| 1706 | S.Diag(Attr.getLoc(), |
| 1707 | Attr.isCXX0XAttribute() ? diag::err_attribute_wrong_decl_type |
| 1708 | : diag::warn_attribute_wrong_decl_type) |
| 1709 | << Attr.getName() << 11 /*member*/; |
| 1710 | return; |
| 1711 | } |
| 1712 | |
| 1713 | // FIXME: Conform to C++0x redeclaration rules. |
| 1714 | |
| 1715 | if (d->getAttr<HidingAttr>()) { |
| 1716 | S.Diag(Attr.getLoc(), diag::err_repeat_attribute) << "hiding"; |
| 1717 | return; |
| 1718 | } |
| 1719 | |
| 1720 | d->addAttr(::new (S.Context) HidingAttr()); |
| 1721 | } |
| 1722 | |
| 1723 | static void HandleOverrideAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
| 1724 | if (Attr.getNumArgs() != 0) { |
| 1725 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
| 1726 | return; |
| 1727 | } |
| 1728 | |
| 1729 | if (!isa<CXXMethodDecl>(d) || !cast<CXXMethodDecl>(d)->isVirtual()) { |
| 1730 | // FIXME: It's not the type that's the problem |
| 1731 | S.Diag(Attr.getLoc(), |
| 1732 | Attr.isCXX0XAttribute() ? diag::err_attribute_wrong_decl_type |
| 1733 | : diag::warn_attribute_wrong_decl_type) |
| 1734 | << Attr.getName() << 10 /*virtual method*/; |
| 1735 | return; |
| 1736 | } |
| 1737 | |
| 1738 | // FIXME: Conform to C++0x redeclaration rules. |
| 1739 | |
| 1740 | if (d->getAttr<OverrideAttr>()) { |
| 1741 | S.Diag(Attr.getLoc(), diag::err_repeat_attribute) << "override"; |
| 1742 | return; |
| 1743 | } |
| 1744 | |
| 1745 | d->addAttr(::new (S.Context) OverrideAttr()); |
| 1746 | } |
| 1747 | |
| 1748 | //===----------------------------------------------------------------------===// |
Ted Kremenek | b71368d | 2009-05-09 02:44:38 +0000 | [diff] [blame] | 1749 | // Checker-specific attribute handlers. |
| 1750 | //===----------------------------------------------------------------------===// |
| 1751 | |
| 1752 | static void HandleNSReturnsRetainedAttr(Decl *d, const AttributeList &Attr, |
| 1753 | Sema &S) { |
| 1754 | |
Ted Kremenek | 5dc53c9 | 2009-05-13 21:07:32 +0000 | [diff] [blame] | 1755 | QualType RetTy; |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1756 | |
Ted Kremenek | 5dc53c9 | 2009-05-13 21:07:32 +0000 | [diff] [blame] | 1757 | if (ObjCMethodDecl *MD = dyn_cast<ObjCMethodDecl>(d)) |
| 1758 | RetTy = MD->getResultType(); |
| 1759 | else if (FunctionDecl *FD = dyn_cast<FunctionDecl>(d)) |
| 1760 | RetTy = FD->getResultType(); |
| 1761 | else { |
Ted Kremenek | 21531fa | 2009-08-19 23:56:48 +0000 | [diff] [blame] | 1762 | SourceLocation L = Attr.getLoc(); |
| 1763 | S.Diag(d->getLocStart(), diag::warn_attribute_wrong_decl_type) |
| 1764 | << SourceRange(L, L) << Attr.getName() << 3 /* function or method */; |
Ted Kremenek | b71368d | 2009-05-09 02:44:38 +0000 | [diff] [blame] | 1765 | return; |
| 1766 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1767 | |
Ted Kremenek | 6217b80 | 2009-07-29 21:53:49 +0000 | [diff] [blame] | 1768 | if (!(S.Context.isObjCNSObjectType(RetTy) || RetTy->getAs<PointerType>() |
John McCall | 183700f | 2009-09-21 23:43:11 +0000 | [diff] [blame] | 1769 | || RetTy->getAs<ObjCObjectPointerType>())) { |
Ted Kremenek | 21531fa | 2009-08-19 23:56:48 +0000 | [diff] [blame] | 1770 | SourceLocation L = Attr.getLoc(); |
| 1771 | S.Diag(d->getLocStart(), diag::warn_ns_attribute_wrong_return_type) |
| 1772 | << SourceRange(L, L) << Attr.getName(); |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1773 | return; |
Ted Kremenek | 5dc53c9 | 2009-05-13 21:07:32 +0000 | [diff] [blame] | 1774 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1775 | |
Ted Kremenek | b71368d | 2009-05-09 02:44:38 +0000 | [diff] [blame] | 1776 | switch (Attr.getKind()) { |
| 1777 | default: |
| 1778 | assert(0 && "invalid ownership attribute"); |
| 1779 | return; |
| 1780 | case AttributeList::AT_cf_returns_retained: |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 1781 | d->addAttr(::new (S.Context) CFReturnsRetainedAttr()); |
Ted Kremenek | b71368d | 2009-05-09 02:44:38 +0000 | [diff] [blame] | 1782 | return; |
| 1783 | case AttributeList::AT_ns_returns_retained: |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 1784 | d->addAttr(::new (S.Context) NSReturnsRetainedAttr()); |
Ted Kremenek | b71368d | 2009-05-09 02:44:38 +0000 | [diff] [blame] | 1785 | return; |
| 1786 | }; |
| 1787 | } |
| 1788 | |
| 1789 | //===----------------------------------------------------------------------===// |
Chris Lattner | 0744e5f | 2008-06-29 00:23:49 +0000 | [diff] [blame] | 1790 | // Top Level Sema Entry Points |
| 1791 | //===----------------------------------------------------------------------===// |
| 1792 | |
Sebastian Redl | a89d82c | 2008-12-21 19:24:58 +0000 | [diff] [blame] | 1793 | /// ProcessDeclAttribute - Apply the specific attribute to the specified decl if |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 1794 | /// the attribute applies to decls. If the attribute is a type attribute, just |
Sean Hunt | bbd37c6 | 2009-11-21 08:43:09 +0000 | [diff] [blame] | 1795 | /// silently ignore it if a GNU attribute. FIXME: Applying a C++0x attribute to |
| 1796 | /// the wrong thing is illegal (C++0x [dcl.attr.grammar]/4). |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1797 | static void ProcessDeclAttribute(Scope *scope, Decl *D, |
| 1798 | const AttributeList &Attr, Sema &S) { |
Eli Friedman | 290eeb0 | 2009-06-08 23:27:34 +0000 | [diff] [blame] | 1799 | if (Attr.isDeclspecAttribute()) |
| 1800 | // FIXME: Try to deal with __declspec attributes! |
| 1801 | return; |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 1802 | switch (Attr.getKind()) { |
Daniel Dunbar | 3068ae0 | 2008-07-31 22:40:48 +0000 | [diff] [blame] | 1803 | case AttributeList::AT_IBOutlet: HandleIBOutletAttr (D, Attr, S); break; |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 1804 | case AttributeList::AT_address_space: |
Fariborz Jahanian | ba372b8 | 2009-02-18 17:52:36 +0000 | [diff] [blame] | 1805 | case AttributeList::AT_objc_gc: |
John Thompson | 6e132aa | 2009-12-04 21:51:28 +0000 | [diff] [blame] | 1806 | case AttributeList::AT_vector_size: |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1807 | // Ignore these, these are type attributes, handled by |
| 1808 | // ProcessTypeAttributes. |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 1809 | break; |
Sean Hunt | 7725e67 | 2009-11-25 04:20:27 +0000 | [diff] [blame] | 1810 | case AttributeList::AT_alias: HandleAliasAttr (D, Attr, S); break; |
| 1811 | case AttributeList::AT_aligned: HandleAlignedAttr (D, Attr, S); break; |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1812 | case AttributeList::AT_always_inline: |
Daniel Dunbar | af668b0 | 2008-10-28 00:17:57 +0000 | [diff] [blame] | 1813 | HandleAlwaysInlineAttr (D, Attr, S); break; |
Ted Kremenek | b725232 | 2009-04-10 00:01:14 +0000 | [diff] [blame] | 1814 | case AttributeList::AT_analyzer_noreturn: |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1815 | HandleAnalyzerNoReturnAttr (D, Attr, S); break; |
Sean Hunt | 7725e67 | 2009-11-25 04:20:27 +0000 | [diff] [blame] | 1816 | case AttributeList::AT_annotate: HandleAnnotateAttr (D, Attr, S); break; |
| 1817 | case AttributeList::AT_base_check: HandleBaseCheckAttr (D, Attr, S); break; |
Sean Hunt | bbd37c6 | 2009-11-21 08:43:09 +0000 | [diff] [blame] | 1818 | case AttributeList::AT_carries_dependency: |
Sean Hunt | 7725e67 | 2009-11-25 04:20:27 +0000 | [diff] [blame] | 1819 | HandleDependencyAttr (D, Attr, S); break; |
Sean Hunt | 7725e67 | 2009-11-25 04:20:27 +0000 | [diff] [blame] | 1820 | case AttributeList::AT_constructor: HandleConstructorAttr (D, Attr, S); break; |
| 1821 | case AttributeList::AT_deprecated: HandleDeprecatedAttr (D, Attr, S); break; |
| 1822 | case AttributeList::AT_destructor: HandleDestructorAttr (D, Attr, S); break; |
| 1823 | case AttributeList::AT_dllexport: HandleDLLExportAttr (D, Attr, S); break; |
| 1824 | case AttributeList::AT_dllimport: HandleDLLImportAttr (D, Attr, S); break; |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 1825 | case AttributeList::AT_ext_vector_type: |
Douglas Gregor | 9cdda0c | 2009-06-17 21:51:59 +0000 | [diff] [blame] | 1826 | HandleExtVectorTypeAttr(scope, D, Attr, S); |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 1827 | break; |
Sean Hunt | 7725e67 | 2009-11-25 04:20:27 +0000 | [diff] [blame] | 1828 | case AttributeList::AT_final: HandleFinalAttr (D, Attr, S); break; |
| 1829 | case AttributeList::AT_format: HandleFormatAttr (D, Attr, S); break; |
| 1830 | case AttributeList::AT_format_arg: HandleFormatArgAttr (D, Attr, S); break; |
| 1831 | case AttributeList::AT_gnu_inline: HandleGNUInlineAttr (D, Attr, S); break; |
| 1832 | case AttributeList::AT_hiding: HandleHidingAttr (D, Attr, S); break; |
| 1833 | case AttributeList::AT_mode: HandleModeAttr (D, Attr, S); break; |
| 1834 | case AttributeList::AT_malloc: HandleMallocAttr (D, Attr, S); break; |
| 1835 | case AttributeList::AT_nonnull: HandleNonNullAttr (D, Attr, S); break; |
| 1836 | case AttributeList::AT_noreturn: HandleNoReturnAttr (D, Attr, S); break; |
| 1837 | case AttributeList::AT_nothrow: HandleNothrowAttr (D, Attr, S); break; |
| 1838 | case AttributeList::AT_override: HandleOverrideAttr (D, Attr, S); break; |
Ted Kremenek | b71368d | 2009-05-09 02:44:38 +0000 | [diff] [blame] | 1839 | |
| 1840 | // Checker-specific. |
| 1841 | case AttributeList::AT_ns_returns_retained: |
| 1842 | case AttributeList::AT_cf_returns_retained: |
| 1843 | HandleNSReturnsRetainedAttr(D, Attr, S); break; |
| 1844 | |
Nate Begeman | 6f3d838 | 2009-06-26 06:32:41 +0000 | [diff] [blame] | 1845 | case AttributeList::AT_reqd_wg_size: |
| 1846 | HandleReqdWorkGroupSize(D, Attr, S); break; |
| 1847 | |
Sean Hunt | 7725e67 | 2009-11-25 04:20:27 +0000 | [diff] [blame] | 1848 | case AttributeList::AT_packed: HandlePackedAttr (D, Attr, S); break; |
| 1849 | case AttributeList::AT_section: HandleSectionAttr (D, Attr, S); break; |
Sean Hunt | 7725e67 | 2009-11-25 04:20:27 +0000 | [diff] [blame] | 1850 | case AttributeList::AT_unavailable: HandleUnavailableAttr (D, Attr, S); break; |
| 1851 | case AttributeList::AT_unused: HandleUnusedAttr (D, Attr, S); break; |
| 1852 | case AttributeList::AT_used: HandleUsedAttr (D, Attr, S); break; |
Sean Hunt | 7725e67 | 2009-11-25 04:20:27 +0000 | [diff] [blame] | 1853 | case AttributeList::AT_visibility: HandleVisibilityAttr (D, Attr, S); break; |
Chris Lattner | 026dc96 | 2009-02-14 07:37:35 +0000 | [diff] [blame] | 1854 | case AttributeList::AT_warn_unused_result: HandleWarnUnusedResult(D,Attr,S); |
| 1855 | break; |
Sean Hunt | 7725e67 | 2009-11-25 04:20:27 +0000 | [diff] [blame] | 1856 | case AttributeList::AT_weak: HandleWeakAttr (D, Attr, S); break; |
| 1857 | case AttributeList::AT_weak_import: HandleWeakImportAttr (D, Attr, S); break; |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 1858 | case AttributeList::AT_transparent_union: |
| 1859 | HandleTransparentUnionAttr(D, Attr, S); |
| 1860 | break; |
Chris Lattner | 0db29ec | 2009-02-14 08:09:34 +0000 | [diff] [blame] | 1861 | case AttributeList::AT_objc_exception: |
| 1862 | HandleObjCExceptionAttr(D, Attr, S); |
| 1863 | break; |
Douglas Gregor | f9201e0 | 2009-02-11 23:02:49 +0000 | [diff] [blame] | 1864 | case AttributeList::AT_overloadable:HandleOverloadableAttr(D, Attr, S); break; |
Sean Hunt | 7725e67 | 2009-11-25 04:20:27 +0000 | [diff] [blame] | 1865 | case AttributeList::AT_nsobject: HandleObjCNSObject (D, Attr, S); break; |
| 1866 | case AttributeList::AT_blocks: HandleBlocksAttr (D, Attr, S); break; |
| 1867 | case AttributeList::AT_sentinel: HandleSentinelAttr (D, Attr, S); break; |
| 1868 | case AttributeList::AT_const: HandleConstAttr (D, Attr, S); break; |
| 1869 | case AttributeList::AT_pure: HandlePureAttr (D, Attr, S); break; |
| 1870 | case AttributeList::AT_cleanup: HandleCleanupAttr (D, Attr, S); break; |
| 1871 | case AttributeList::AT_nodebug: HandleNoDebugAttr (D, Attr, S); break; |
| 1872 | case AttributeList::AT_noinline: HandleNoInlineAttr (D, Attr, S); break; |
| 1873 | case AttributeList::AT_regparm: HandleRegparmAttr (D, Attr, S); break; |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1874 | case AttributeList::IgnoredAttribute: |
Chris Lattner | 5e20448 | 2009-04-25 18:44:54 +0000 | [diff] [blame] | 1875 | case AttributeList::AT_no_instrument_function: // Interacts with -pg. |
Anders Carlsson | 05f8e47 | 2009-02-13 08:16:43 +0000 | [diff] [blame] | 1876 | // Just ignore |
| 1877 | break; |
John McCall | 04a67a6 | 2010-02-05 21:31:56 +0000 | [diff] [blame^] | 1878 | case AttributeList::AT_stdcall: |
| 1879 | case AttributeList::AT_cdecl: |
| 1880 | case AttributeList::AT_fastcall: |
| 1881 | // These are all treated as type attributes. |
| 1882 | break; |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 1883 | default: |
Anton Korobeynikov | 82d0a41 | 2010-01-10 12:58:08 +0000 | [diff] [blame] | 1884 | // Ask target about the attribute. |
| 1885 | const TargetAttributesSema &TargetAttrs = S.getTargetAttributesSema(); |
| 1886 | if (!TargetAttrs.ProcessDeclAttribute(scope, D, Attr, S)) |
| 1887 | S.Diag(Attr.getLoc(), diag::warn_attribute_ignored) << Attr.getName(); |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 1888 | break; |
| 1889 | } |
| 1890 | } |
| 1891 | |
| 1892 | /// ProcessDeclAttributeList - Apply all the decl attributes in the specified |
| 1893 | /// attribute list to the specified decl, ignoring any type attributes. |
Douglas Gregor | 9cdda0c | 2009-06-17 21:51:59 +0000 | [diff] [blame] | 1894 | void Sema::ProcessDeclAttributeList(Scope *S, Decl *D, const AttributeList *AttrList) { |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 1895 | while (AttrList) { |
Douglas Gregor | 9cdda0c | 2009-06-17 21:51:59 +0000 | [diff] [blame] | 1896 | ProcessDeclAttribute(S, D, *AttrList, *this); |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 1897 | AttrList = AttrList->getNext(); |
| 1898 | } |
| 1899 | } |
| 1900 | |
Ryan Flynn | e25ff83 | 2009-07-30 03:15:39 +0000 | [diff] [blame] | 1901 | /// DeclClonePragmaWeak - clone existing decl (maybe definition), |
| 1902 | /// #pragma weak needs a non-definition decl and source may not have one |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1903 | NamedDecl * Sema::DeclClonePragmaWeak(NamedDecl *ND, IdentifierInfo *II) { |
Ryan Flynn | 7b1fdbd | 2009-07-31 02:52:19 +0000 | [diff] [blame] | 1904 | assert(isa<FunctionDecl>(ND) || isa<VarDecl>(ND)); |
Ryan Flynn | e25ff83 | 2009-07-30 03:15:39 +0000 | [diff] [blame] | 1905 | NamedDecl *NewD = 0; |
| 1906 | if (FunctionDecl *FD = dyn_cast<FunctionDecl>(ND)) { |
| 1907 | NewD = FunctionDecl::Create(FD->getASTContext(), FD->getDeclContext(), |
| 1908 | FD->getLocation(), DeclarationName(II), |
John McCall | a93c934 | 2009-12-07 02:54:59 +0000 | [diff] [blame] | 1909 | FD->getType(), FD->getTypeSourceInfo()); |
Ryan Flynn | e25ff83 | 2009-07-30 03:15:39 +0000 | [diff] [blame] | 1910 | } else if (VarDecl *VD = dyn_cast<VarDecl>(ND)) { |
| 1911 | NewD = VarDecl::Create(VD->getASTContext(), VD->getDeclContext(), |
| 1912 | VD->getLocation(), II, |
John McCall | a93c934 | 2009-12-07 02:54:59 +0000 | [diff] [blame] | 1913 | VD->getType(), VD->getTypeSourceInfo(), |
Argyrios Kyrtzidis | a1d5662 | 2009-08-19 01:27:57 +0000 | [diff] [blame] | 1914 | VD->getStorageClass()); |
Ryan Flynn | e25ff83 | 2009-07-30 03:15:39 +0000 | [diff] [blame] | 1915 | } |
| 1916 | return NewD; |
| 1917 | } |
| 1918 | |
| 1919 | /// DeclApplyPragmaWeak - A declaration (maybe definition) needs #pragma weak |
| 1920 | /// applied to it, possibly with an alias. |
Ryan Flynn | 7b1fdbd | 2009-07-31 02:52:19 +0000 | [diff] [blame] | 1921 | void Sema::DeclApplyPragmaWeak(Scope *S, NamedDecl *ND, WeakInfo &W) { |
Chris Lattner | c4f1fb1 | 2009-09-08 18:10:11 +0000 | [diff] [blame] | 1922 | if (W.getUsed()) return; // only do this once |
| 1923 | W.setUsed(true); |
| 1924 | if (W.getAlias()) { // clone decl, impersonate __attribute(weak,alias(...)) |
| 1925 | IdentifierInfo *NDId = ND->getIdentifier(); |
| 1926 | NamedDecl *NewD = DeclClonePragmaWeak(ND, W.getAlias()); |
| 1927 | NewD->addAttr(::new (Context) AliasAttr(NDId->getName())); |
| 1928 | NewD->addAttr(::new (Context) WeakAttr()); |
| 1929 | WeakTopLevelDecl.push_back(NewD); |
| 1930 | // FIXME: "hideous" code from Sema::LazilyCreateBuiltin |
| 1931 | // to insert Decl at TU scope, sorry. |
| 1932 | DeclContext *SavedContext = CurContext; |
| 1933 | CurContext = Context.getTranslationUnitDecl(); |
| 1934 | PushOnScopeChains(NewD, S); |
| 1935 | CurContext = SavedContext; |
| 1936 | } else { // just add weak to existing |
| 1937 | ND->addAttr(::new (Context) WeakAttr()); |
Ryan Flynn | e25ff83 | 2009-07-30 03:15:39 +0000 | [diff] [blame] | 1938 | } |
| 1939 | } |
| 1940 | |
Chris Lattner | 0744e5f | 2008-06-29 00:23:49 +0000 | [diff] [blame] | 1941 | /// ProcessDeclAttributes - Given a declarator (PD) with attributes indicated in |
| 1942 | /// it, apply them to D. This is a bit tricky because PD can have attributes |
| 1943 | /// specified in many different places, and we need to find and apply them all. |
Douglas Gregor | 9cdda0c | 2009-06-17 21:51:59 +0000 | [diff] [blame] | 1944 | void Sema::ProcessDeclAttributes(Scope *S, Decl *D, const Declarator &PD) { |
Ryan Flynn | e25ff83 | 2009-07-30 03:15:39 +0000 | [diff] [blame] | 1945 | // Handle #pragma weak |
| 1946 | if (NamedDecl *ND = dyn_cast<NamedDecl>(D)) { |
| 1947 | if (ND->hasLinkage()) { |
| 1948 | WeakInfo W = WeakUndeclaredIdentifiers.lookup(ND->getIdentifier()); |
| 1949 | if (W != WeakInfo()) { |
Ryan Flynn | 7b1fdbd | 2009-07-31 02:52:19 +0000 | [diff] [blame] | 1950 | // Identifier referenced by #pragma weak before it was declared |
| 1951 | DeclApplyPragmaWeak(S, ND, W); |
Ryan Flynn | e25ff83 | 2009-07-30 03:15:39 +0000 | [diff] [blame] | 1952 | WeakUndeclaredIdentifiers[ND->getIdentifier()] = W; |
| 1953 | } |
| 1954 | } |
| 1955 | } |
| 1956 | |
Chris Lattner | 0744e5f | 2008-06-29 00:23:49 +0000 | [diff] [blame] | 1957 | // Apply decl attributes from the DeclSpec if present. |
| 1958 | if (const AttributeList *Attrs = PD.getDeclSpec().getAttributes()) |
Douglas Gregor | 9cdda0c | 2009-06-17 21:51:59 +0000 | [diff] [blame] | 1959 | ProcessDeclAttributeList(S, D, Attrs); |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1960 | |
Chris Lattner | 0744e5f | 2008-06-29 00:23:49 +0000 | [diff] [blame] | 1961 | // Walk the declarator structure, applying decl attributes that were in a type |
| 1962 | // position to the decl itself. This handles cases like: |
| 1963 | // int *__attr__(x)** D; |
| 1964 | // when X is a decl attribute. |
| 1965 | for (unsigned i = 0, e = PD.getNumTypeObjects(); i != e; ++i) |
| 1966 | if (const AttributeList *Attrs = PD.getTypeObject(i).getAttrs()) |
Douglas Gregor | 9cdda0c | 2009-06-17 21:51:59 +0000 | [diff] [blame] | 1967 | ProcessDeclAttributeList(S, D, Attrs); |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1968 | |
Chris Lattner | 0744e5f | 2008-06-29 00:23:49 +0000 | [diff] [blame] | 1969 | // Finally, apply any attributes on the decl itself. |
| 1970 | if (const AttributeList *Attrs = PD.getAttributes()) |
Douglas Gregor | 9cdda0c | 2009-06-17 21:51:59 +0000 | [diff] [blame] | 1971 | ProcessDeclAttributeList(S, D, Attrs); |
Chris Lattner | 0744e5f | 2008-06-29 00:23:49 +0000 | [diff] [blame] | 1972 | } |
John McCall | 54abf7d | 2009-11-04 02:18:39 +0000 | [diff] [blame] | 1973 | |
| 1974 | /// PushParsingDeclaration - Enter a new "scope" of deprecation |
| 1975 | /// warnings. |
| 1976 | /// |
| 1977 | /// The state token we use is the start index of this scope |
| 1978 | /// on the warning stack. |
| 1979 | Action::ParsingDeclStackState Sema::PushParsingDeclaration() { |
| 1980 | ParsingDeclDepth++; |
John McCall | 2f51448 | 2010-01-27 03:50:35 +0000 | [diff] [blame] | 1981 | return (ParsingDeclStackState) DelayedDiagnostics.size(); |
| 1982 | } |
| 1983 | |
| 1984 | void Sema::PopParsingDeclaration(ParsingDeclStackState S, DeclPtrTy Ctx) { |
| 1985 | assert(ParsingDeclDepth > 0 && "empty ParsingDeclaration stack"); |
| 1986 | ParsingDeclDepth--; |
| 1987 | |
| 1988 | if (DelayedDiagnostics.empty()) |
| 1989 | return; |
| 1990 | |
| 1991 | unsigned SavedIndex = (unsigned) S; |
| 1992 | assert(SavedIndex <= DelayedDiagnostics.size() && |
| 1993 | "saved index is out of bounds"); |
| 1994 | |
| 1995 | // We only want to actually emit delayed diagnostics when we |
| 1996 | // successfully parsed a decl. |
| 1997 | Decl *D = Ctx ? Ctx.getAs<Decl>() : 0; |
| 1998 | if (D) { |
| 1999 | // We really do want to start with 0 here. We get one push for a |
| 2000 | // decl spec and another for each declarator; in a decl group like: |
| 2001 | // deprecated_typedef foo, *bar, baz(); |
| 2002 | // only the declarator pops will be passed decls. This is correct; |
| 2003 | // we really do need to consider delayed diagnostics from the decl spec |
| 2004 | // for each of the different declarations. |
| 2005 | for (unsigned I = 0, E = DelayedDiagnostics.size(); I != E; ++I) { |
| 2006 | if (DelayedDiagnostics[I].Triggered) |
| 2007 | continue; |
| 2008 | |
| 2009 | switch (DelayedDiagnostics[I].Kind) { |
| 2010 | case DelayedDiagnostic::Deprecation: |
| 2011 | HandleDelayedDeprecationCheck(DelayedDiagnostics[I], D); |
| 2012 | break; |
| 2013 | |
| 2014 | case DelayedDiagnostic::Access: |
| 2015 | HandleDelayedAccessCheck(DelayedDiagnostics[I], D); |
| 2016 | break; |
| 2017 | } |
| 2018 | } |
| 2019 | } |
| 2020 | |
| 2021 | DelayedDiagnostics.set_size(SavedIndex); |
John McCall | 54abf7d | 2009-11-04 02:18:39 +0000 | [diff] [blame] | 2022 | } |
| 2023 | |
| 2024 | static bool isDeclDeprecated(Decl *D) { |
| 2025 | do { |
| 2026 | if (D->hasAttr<DeprecatedAttr>()) |
| 2027 | return true; |
| 2028 | } while ((D = cast_or_null<Decl>(D->getDeclContext()))); |
| 2029 | return false; |
| 2030 | } |
| 2031 | |
John McCall | 2f51448 | 2010-01-27 03:50:35 +0000 | [diff] [blame] | 2032 | void Sema::HandleDelayedDeprecationCheck(Sema::DelayedDiagnostic &DD, |
| 2033 | Decl *Ctx) { |
| 2034 | if (isDeclDeprecated(Ctx)) |
John McCall | 54abf7d | 2009-11-04 02:18:39 +0000 | [diff] [blame] | 2035 | return; |
| 2036 | |
John McCall | 2f51448 | 2010-01-27 03:50:35 +0000 | [diff] [blame] | 2037 | DD.Triggered = true; |
| 2038 | Diag(DD.Loc, diag::warn_deprecated) |
| 2039 | << DD.DeprecationData.Decl->getDeclName(); |
John McCall | 54abf7d | 2009-11-04 02:18:39 +0000 | [diff] [blame] | 2040 | } |
| 2041 | |
| 2042 | void Sema::EmitDeprecationWarning(NamedDecl *D, SourceLocation Loc) { |
| 2043 | // Delay if we're currently parsing a declaration. |
| 2044 | if (ParsingDeclDepth) { |
John McCall | 2f51448 | 2010-01-27 03:50:35 +0000 | [diff] [blame] | 2045 | DelayedDiagnostics.push_back(DelayedDiagnostic::makeDeprecation(Loc, D)); |
John McCall | 54abf7d | 2009-11-04 02:18:39 +0000 | [diff] [blame] | 2046 | return; |
| 2047 | } |
| 2048 | |
| 2049 | // Otherwise, don't warn if our current context is deprecated. |
| 2050 | if (isDeclDeprecated(cast<Decl>(CurContext))) |
| 2051 | return; |
| 2052 | |
| 2053 | Diag(Loc, diag::warn_deprecated) << D->getDeclName(); |
| 2054 | } |