SemaDeclAttr.cpp revision 3c73c41cefcfe76f36b7bed72c9f1ec195490951
16b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner//===--- SemaDeclAttr.cpp - Declaration Attribute Handling ----------------===// 26b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner// 36b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner// The LLVM Compiler Infrastructure 46b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner// 56b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner// This file is distributed under the University of Illinois Open Source 66b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner// License. See LICENSE.TXT for details. 76b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner// 86b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner//===----------------------------------------------------------------------===// 96b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner// 106b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner// This file implements decl-related attribute processing. 116b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner// 126b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner//===----------------------------------------------------------------------===// 136b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 146b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner#include "Sema.h" 156b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner#include "clang/AST/ASTContext.h" 16acc5f3e42334525bf28c86471551f83dfce222d5Daniel Dunbar#include "clang/AST/DeclObjC.h" 17acc5f3e42334525bf28c86471551f83dfce222d5Daniel Dunbar#include "clang/AST/Expr.h" 18e4858a65a93fb36c099d8dd2ea0a98e33e77687eDaniel Dunbar#include "clang/Basic/Diagnostic.h" 19fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner#include "clang/Basic/TargetInfo.h" 2012bc692a78582f1cc32791325981aadcffb04c5eDaniel Dunbar#include "clang/Parse/DeclSpec.h" 216e1eb87c04a3acd50888375dad59fac06b7ceb1fTed Kremenek#include <llvm/ADT/StringExtras.h> 226b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattnerusing namespace clang; 236b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 24e5c5ee1cff9ec084f176fa252774262677857ad2Chris Lattner//===----------------------------------------------------------------------===// 25e5c5ee1cff9ec084f176fa252774262677857ad2Chris Lattner// Helper functions 26e5c5ee1cff9ec084f176fa252774262677857ad2Chris Lattner//===----------------------------------------------------------------------===// 27e5c5ee1cff9ec084f176fa252774262677857ad2Chris Lattner 28d3f2c10f881311831a84114179342ff4db55e0c3Daniel Dunbarstatic const FunctionType *getFunctionType(Decl *d) { 296b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner QualType Ty; 306b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner if (ValueDecl *decl = dyn_cast<ValueDecl>(d)) 316b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner Ty = decl->getType(); 326b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner else if (FieldDecl *decl = dyn_cast<FieldDecl>(d)) 336b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner Ty = decl->getType(); 346b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner else if (TypedefDecl* decl = dyn_cast<TypedefDecl>(d)) 356b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner Ty = decl->getUnderlyingType(); 366b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner else 376b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return 0; 386b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 396b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner if (Ty->isFunctionPointerType()) 406b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner Ty = Ty->getAsPointerType()->getPointeeType(); 41d3f2c10f881311831a84114179342ff4db55e0c3Daniel Dunbar 42d3f2c10f881311831a84114179342ff4db55e0c3Daniel Dunbar return Ty->getAsFunctionType(); 436b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner} 446b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 453568249c2d72d58b835a22d9186f5a6b4fc4bcd6Daniel Dunbar// FIXME: We should provide an abstraction around a method or function 463568249c2d72d58b835a22d9186f5a6b4fc4bcd6Daniel Dunbar// to provide the following bits of information. 473568249c2d72d58b835a22d9186f5a6b4fc4bcd6Daniel Dunbar 48d3f2c10f881311831a84114179342ff4db55e0c3Daniel Dunbar/// isFunctionOrMethod - Return true if the given decl has function 49d3f2c10f881311831a84114179342ff4db55e0c3Daniel Dunbar/// type (function or function-typed variable) or an Objective-C 50d3f2c10f881311831a84114179342ff4db55e0c3Daniel Dunbar/// method. 513568249c2d72d58b835a22d9186f5a6b4fc4bcd6Daniel Dunbarstatic bool isFunctionOrMethod(Decl *d) { 52d3f2c10f881311831a84114179342ff4db55e0c3Daniel Dunbar return getFunctionType(d) || isa<ObjCMethodDecl>(d); 53d3f2c10f881311831a84114179342ff4db55e0c3Daniel Dunbar} 543568249c2d72d58b835a22d9186f5a6b4fc4bcd6Daniel Dunbar 55d3f2c10f881311831a84114179342ff4db55e0c3Daniel Dunbar/// hasFunctionProto - Return true if the given decl has a argument 56d3f2c10f881311831a84114179342ff4db55e0c3Daniel Dunbar/// information. This decl should have already passed 57d3f2c10f881311831a84114179342ff4db55e0c3Daniel Dunbar/// isFunctionOrMethod. 58d3f2c10f881311831a84114179342ff4db55e0c3Daniel Dunbarstatic bool hasFunctionProto(Decl *d) { 59d3f2c10f881311831a84114179342ff4db55e0c3Daniel Dunbar if (const FunctionType *FnTy = getFunctionType(d)) { 60d3f2c10f881311831a84114179342ff4db55e0c3Daniel Dunbar return isa<FunctionTypeProto>(FnTy); 61d3f2c10f881311831a84114179342ff4db55e0c3Daniel Dunbar } else { 62d3f2c10f881311831a84114179342ff4db55e0c3Daniel Dunbar assert(isa<ObjCMethodDecl>(d)); 63d3f2c10f881311831a84114179342ff4db55e0c3Daniel Dunbar return true; 64d3f2c10f881311831a84114179342ff4db55e0c3Daniel Dunbar } 653568249c2d72d58b835a22d9186f5a6b4fc4bcd6Daniel Dunbar} 663568249c2d72d58b835a22d9186f5a6b4fc4bcd6Daniel Dunbar 67d3f2c10f881311831a84114179342ff4db55e0c3Daniel Dunbar/// getFunctionOrMethodNumArgs - Return number of function or method 68d3f2c10f881311831a84114179342ff4db55e0c3Daniel Dunbar/// arguments. It is an error to call this on a K&R function (use 69d3f2c10f881311831a84114179342ff4db55e0c3Daniel Dunbar/// hasFunctionProto first). 703568249c2d72d58b835a22d9186f5a6b4fc4bcd6Daniel Dunbarstatic unsigned getFunctionOrMethodNumArgs(Decl *d) { 71d3f2c10f881311831a84114179342ff4db55e0c3Daniel Dunbar if (const FunctionType *FnTy = getFunctionType(d)) { 72d3f2c10f881311831a84114179342ff4db55e0c3Daniel Dunbar const FunctionTypeProto *proto = cast<FunctionTypeProto>(FnTy); 733568249c2d72d58b835a22d9186f5a6b4fc4bcd6Daniel Dunbar return proto->getNumArgs(); 743568249c2d72d58b835a22d9186f5a6b4fc4bcd6Daniel Dunbar } else { 753568249c2d72d58b835a22d9186f5a6b4fc4bcd6Daniel Dunbar return cast<ObjCMethodDecl>(d)->getNumParams(); 763568249c2d72d58b835a22d9186f5a6b4fc4bcd6Daniel Dunbar } 773568249c2d72d58b835a22d9186f5a6b4fc4bcd6Daniel Dunbar} 783568249c2d72d58b835a22d9186f5a6b4fc4bcd6Daniel Dunbar 793568249c2d72d58b835a22d9186f5a6b4fc4bcd6Daniel Dunbarstatic QualType getFunctionOrMethodArgType(Decl *d, unsigned Idx) { 80d3f2c10f881311831a84114179342ff4db55e0c3Daniel Dunbar if (const FunctionType *FnTy = getFunctionType(d)) { 81d3f2c10f881311831a84114179342ff4db55e0c3Daniel Dunbar const FunctionTypeProto *proto = cast<FunctionTypeProto>(FnTy); 823568249c2d72d58b835a22d9186f5a6b4fc4bcd6Daniel Dunbar return proto->getArgType(Idx); 833568249c2d72d58b835a22d9186f5a6b4fc4bcd6Daniel Dunbar } else { 843568249c2d72d58b835a22d9186f5a6b4fc4bcd6Daniel Dunbar return cast<ObjCMethodDecl>(d)->getParamDecl(Idx)->getType(); 853568249c2d72d58b835a22d9186f5a6b4fc4bcd6Daniel Dunbar } 863568249c2d72d58b835a22d9186f5a6b4fc4bcd6Daniel Dunbar} 873568249c2d72d58b835a22d9186f5a6b4fc4bcd6Daniel Dunbar 883568249c2d72d58b835a22d9186f5a6b4fc4bcd6Daniel Dunbarstatic bool isFunctionOrMethodVariadic(Decl *d) { 89d3f2c10f881311831a84114179342ff4db55e0c3Daniel Dunbar if (const FunctionType *FnTy = getFunctionType(d)) { 90d3f2c10f881311831a84114179342ff4db55e0c3Daniel Dunbar const FunctionTypeProto *proto = cast<FunctionTypeProto>(FnTy); 913568249c2d72d58b835a22d9186f5a6b4fc4bcd6Daniel Dunbar return proto->isVariadic(); 923568249c2d72d58b835a22d9186f5a6b4fc4bcd6Daniel Dunbar } else { 933568249c2d72d58b835a22d9186f5a6b4fc4bcd6Daniel Dunbar return cast<ObjCMethodDecl>(d)->isVariadic(); 943568249c2d72d58b835a22d9186f5a6b4fc4bcd6Daniel Dunbar } 953568249c2d72d58b835a22d9186f5a6b4fc4bcd6Daniel Dunbar} 963568249c2d72d58b835a22d9186f5a6b4fc4bcd6Daniel Dunbar 976b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattnerstatic inline bool isNSStringType(QualType T, ASTContext &Ctx) { 98b77792eabf5882cf9af8cc810599b20432fda6c2Chris Lattner const PointerType *PT = T->getAsPointerType(); 99b77792eabf5882cf9af8cc810599b20432fda6c2Chris Lattner if (!PT) 1006b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return false; 1016b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 102b77792eabf5882cf9af8cc810599b20432fda6c2Chris Lattner const ObjCInterfaceType *ClsT =PT->getPointeeType()->getAsObjCInterfaceType(); 1036b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner if (!ClsT) 1046b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return false; 1056b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 1066b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner IdentifierInfo* ClsName = ClsT->getDecl()->getIdentifier(); 1076b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 1086b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // FIXME: Should we walk the chain of classes? 1096b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return ClsName == &Ctx.Idents.get("NSString") || 1106b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner ClsName == &Ctx.Idents.get("NSMutableString"); 1116b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner} 1126b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 113085e8f7da37a227ceee7f98b724e0a42e04d01caDaniel Dunbarstatic inline bool isCFStringType(QualType T, ASTContext &Ctx) { 114085e8f7da37a227ceee7f98b724e0a42e04d01caDaniel Dunbar const PointerType *PT = T->getAsPointerType(); 115085e8f7da37a227ceee7f98b724e0a42e04d01caDaniel Dunbar if (!PT) 116085e8f7da37a227ceee7f98b724e0a42e04d01caDaniel Dunbar return false; 117085e8f7da37a227ceee7f98b724e0a42e04d01caDaniel Dunbar 118085e8f7da37a227ceee7f98b724e0a42e04d01caDaniel Dunbar const RecordType *RT = PT->getPointeeType()->getAsRecordType(); 119085e8f7da37a227ceee7f98b724e0a42e04d01caDaniel Dunbar if (!RT) 120085e8f7da37a227ceee7f98b724e0a42e04d01caDaniel Dunbar return false; 121085e8f7da37a227ceee7f98b724e0a42e04d01caDaniel Dunbar 122085e8f7da37a227ceee7f98b724e0a42e04d01caDaniel Dunbar const RecordDecl *RD = RT->getDecl(); 123085e8f7da37a227ceee7f98b724e0a42e04d01caDaniel Dunbar if (RD->getTagKind() != TagDecl::TK_struct) 124085e8f7da37a227ceee7f98b724e0a42e04d01caDaniel Dunbar return false; 125085e8f7da37a227ceee7f98b724e0a42e04d01caDaniel Dunbar 126085e8f7da37a227ceee7f98b724e0a42e04d01caDaniel Dunbar return RD->getIdentifier() == &Ctx.Idents.get("__CFString"); 127085e8f7da37a227ceee7f98b724e0a42e04d01caDaniel Dunbar} 128085e8f7da37a227ceee7f98b724e0a42e04d01caDaniel Dunbar 129e5c5ee1cff9ec084f176fa252774262677857ad2Chris Lattner//===----------------------------------------------------------------------===// 130e5c5ee1cff9ec084f176fa252774262677857ad2Chris Lattner// Attribute Implementations 131e5c5ee1cff9ec084f176fa252774262677857ad2Chris Lattner//===----------------------------------------------------------------------===// 132e5c5ee1cff9ec084f176fa252774262677857ad2Chris Lattner 1333068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar// FIXME: All this manual attribute parsing code is gross. At the 1343068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar// least add some helper functions to check most argument patterns (# 1353068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar// and types of args). 1363068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar 137803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattnerstatic void HandleExtVectorTypeAttr(Decl *d, const AttributeList &Attr, 138803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner Sema &S) { 139545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner TypedefDecl *tDecl = dyn_cast<TypedefDecl>(d); 140545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner if (tDecl == 0) { 141803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner S.Diag(Attr.getLoc(), diag::err_typecheck_ext_vector_not_typedef); 142545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner return; 1436b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 1446b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 1456b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner QualType curType = tDecl->getUnderlyingType(); 1466b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // check the attribute arguments. 147545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner if (Attr.getNumArgs() != 1) { 1483c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; 1496b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 1506b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 151545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner Expr *sizeExpr = static_cast<Expr *>(Attr.getArg(0)); 1526b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner llvm::APSInt vecSize(32); 153803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner if (!sizeExpr->isIntegerConstantExpr(vecSize, S.Context)) { 154fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_argument_not_int) 155fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner << "ext_vector_type" << sizeExpr->getSourceRange(); 1566b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 1576b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 1586b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // unlike gcc's vector_size attribute, we do not allow vectors to be defined 1596b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // in conjunction with complex types (pointers, arrays, functions, etc.). 160b77792eabf5882cf9af8cc810599b20432fda6c2Chris Lattner if (!curType->isIntegerType() && !curType->isRealFloatingType()) { 161fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_invalid_vector_type) 162fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner << curType.getAsString(); 1636b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 1646b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 1656b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // unlike gcc's vector_size attribute, the size is specified as the 1666b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // number of elements, not the number of bytes. 1676b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner unsigned vectorSize = static_cast<unsigned>(vecSize.getZExtValue()); 1686b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 1696b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner if (vectorSize == 0) { 170fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_zero_size) 171fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner << sizeExpr->getSourceRange(); 1726b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 1736b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 1746b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // Instantiate/Install the vector type, the number of elements is > 0. 175803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner tDecl->setUnderlyingType(S.Context.getExtVectorType(curType, vectorSize)); 1766b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // Remember this typedef decl, we will need it later for diagnostics. 177803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner S.ExtVectorDecls.push_back(tDecl); 1786b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner} 1796b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 180065c5a801f46dda8ff0cd6ad954c4e5f94a3be75Chris Lattner 181065c5a801f46dda8ff0cd6ad954c4e5f94a3be75Chris Lattner/// HandleVectorSizeAttribute - this attribute is only applicable to 182065c5a801f46dda8ff0cd6ad954c4e5f94a3be75Chris Lattner/// integral and float scalars, although arrays, pointers, and function 183065c5a801f46dda8ff0cd6ad954c4e5f94a3be75Chris Lattner/// return values are allowed in conjunction with this construct. Aggregates 184065c5a801f46dda8ff0cd6ad954c4e5f94a3be75Chris Lattner/// with this attribute are invalid, even if they are of the same size as a 185065c5a801f46dda8ff0cd6ad954c4e5f94a3be75Chris Lattner/// corresponding scalar. 186065c5a801f46dda8ff0cd6ad954c4e5f94a3be75Chris Lattner/// The raw attribute should contain precisely 1 argument, the vector size 187065c5a801f46dda8ff0cd6ad954c4e5f94a3be75Chris Lattner/// for the variable, measured in bytes. If curType and rawAttr are well 188065c5a801f46dda8ff0cd6ad954c4e5f94a3be75Chris Lattner/// formed, this routine will return a new vector type. 189803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattnerstatic void HandleVectorSizeAttr(Decl *D, const AttributeList &Attr, Sema &S) { 190065c5a801f46dda8ff0cd6ad954c4e5f94a3be75Chris Lattner QualType CurType; 191065c5a801f46dda8ff0cd6ad954c4e5f94a3be75Chris Lattner if (ValueDecl *VD = dyn_cast<ValueDecl>(D)) 192065c5a801f46dda8ff0cd6ad954c4e5f94a3be75Chris Lattner CurType = VD->getType(); 193065c5a801f46dda8ff0cd6ad954c4e5f94a3be75Chris Lattner else if (TypedefDecl *TD = dyn_cast<TypedefDecl>(D)) 194065c5a801f46dda8ff0cd6ad954c4e5f94a3be75Chris Lattner CurType = TD->getUnderlyingType(); 195065c5a801f46dda8ff0cd6ad954c4e5f94a3be75Chris Lattner else { 196fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(D->getLocation(), diag::err_attr_wrong_decl) 197fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner << "vector_size" << SourceRange(Attr.getLoc(), Attr.getLoc()); 198065c5a801f46dda8ff0cd6ad954c4e5f94a3be75Chris Lattner return; 199065c5a801f46dda8ff0cd6ad954c4e5f94a3be75Chris Lattner } 200065c5a801f46dda8ff0cd6ad954c4e5f94a3be75Chris Lattner 201065c5a801f46dda8ff0cd6ad954c4e5f94a3be75Chris Lattner // Check the attribute arugments. 202545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner if (Attr.getNumArgs() != 1) { 2033c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; 204065c5a801f46dda8ff0cd6ad954c4e5f94a3be75Chris Lattner return; 2056b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 206545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner Expr *sizeExpr = static_cast<Expr *>(Attr.getArg(0)); 2076b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner llvm::APSInt vecSize(32); 208803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner if (!sizeExpr->isIntegerConstantExpr(vecSize, S.Context)) { 209fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_argument_not_int) 210fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner << "vector_size" << sizeExpr->getSourceRange(); 211065c5a801f46dda8ff0cd6ad954c4e5f94a3be75Chris Lattner return; 2126b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 2136b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // navigate to the base type - we need to provide for vector pointers, 2146b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // vector arrays, and functions returning vectors. 215b77792eabf5882cf9af8cc810599b20432fda6c2Chris Lattner if (CurType->isPointerType() || CurType->isArrayType() || 216b77792eabf5882cf9af8cc810599b20432fda6c2Chris Lattner CurType->isFunctionType()) { 2176b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner assert(0 && "HandleVector(): Complex type construction unimplemented"); 2186b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner /* FIXME: rebuild the type from the inside out, vectorizing the inner type. 2196b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner do { 2206b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner if (PointerType *PT = dyn_cast<PointerType>(canonType)) 2216b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner canonType = PT->getPointeeType().getTypePtr(); 2226b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner else if (ArrayType *AT = dyn_cast<ArrayType>(canonType)) 2236b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner canonType = AT->getElementType().getTypePtr(); 2246b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner else if (FunctionType *FT = dyn_cast<FunctionType>(canonType)) 2256b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner canonType = FT->getResultType().getTypePtr(); 2266b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } while (canonType->isPointerType() || canonType->isArrayType() || 2276b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner canonType->isFunctionType()); 2286b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner */ 2296b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 2306b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // the base type must be integer or float. 231b77792eabf5882cf9af8cc810599b20432fda6c2Chris Lattner if (!CurType->isIntegerType() && !CurType->isRealFloatingType()) { 232fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_invalid_vector_type) 233fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner << CurType.getAsString(); 234065c5a801f46dda8ff0cd6ad954c4e5f94a3be75Chris Lattner return; 2356b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 236803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner unsigned typeSize = static_cast<unsigned>(S.Context.getTypeSize(CurType)); 2376b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // vecSize is specified in bytes - convert to bits. 2386b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner unsigned vectorSize = static_cast<unsigned>(vecSize.getZExtValue() * 8); 2396b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 2406b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // the vector size needs to be an integral multiple of the type size. 2416b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner if (vectorSize % typeSize) { 242fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_invalid_size) 243fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner << sizeExpr->getSourceRange(); 244065c5a801f46dda8ff0cd6ad954c4e5f94a3be75Chris Lattner return; 2456b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 2466b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner if (vectorSize == 0) { 247fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_zero_size) 248fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner << sizeExpr->getSourceRange(); 249065c5a801f46dda8ff0cd6ad954c4e5f94a3be75Chris Lattner return; 2506b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 251065c5a801f46dda8ff0cd6ad954c4e5f94a3be75Chris Lattner 252065c5a801f46dda8ff0cd6ad954c4e5f94a3be75Chris Lattner // Success! Instantiate the vector type, the number of elements is > 0, and 253065c5a801f46dda8ff0cd6ad954c4e5f94a3be75Chris Lattner // not required to be a power of 2, unlike GCC. 254803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner CurType = S.Context.getVectorType(CurType, vectorSize/typeSize); 255065c5a801f46dda8ff0cd6ad954c4e5f94a3be75Chris Lattner 256065c5a801f46dda8ff0cd6ad954c4e5f94a3be75Chris Lattner if (ValueDecl *VD = dyn_cast<ValueDecl>(D)) 257065c5a801f46dda8ff0cd6ad954c4e5f94a3be75Chris Lattner VD->setType(CurType); 258065c5a801f46dda8ff0cd6ad954c4e5f94a3be75Chris Lattner else 259065c5a801f46dda8ff0cd6ad954c4e5f94a3be75Chris Lattner cast<TypedefDecl>(D)->setUnderlyingType(CurType); 2606b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner} 2616b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 262803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattnerstatic void HandlePackedAttr(Decl *d, const AttributeList &Attr, Sema &S) { 2636b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // check the attribute arguments. 264545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner if (Attr.getNumArgs() > 0) { 2653c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; 2666b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 2676b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 2686b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 2696b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner if (TagDecl *TD = dyn_cast<TagDecl>(d)) 2703b0db908ebd07eaa26bc90deba5e826de00fe515Daniel Dunbar TD->addAttr(new PackedAttr(1)); 2716b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner else if (FieldDecl *FD = dyn_cast<FieldDecl>(d)) { 2726b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // If the alignment is less than or equal to 8 bits, the packed attribute 2736b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // has no effect. 2746b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner if (!FD->getType()->isIncompleteType() && 275803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner S.Context.getTypeAlign(FD->getType()) <= 8) 276fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::warn_attribute_ignored_for_field_of_type) 2773c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner << Attr.getName() << FD->getType().getAsString(); 2786b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner else 2793b0db908ebd07eaa26bc90deba5e826de00fe515Daniel Dunbar FD->addAttr(new PackedAttr(1)); 2806b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } else 2813c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner S.Diag(Attr.getLoc(), diag::warn_attribute_ignored) << Attr.getName(); 2826b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner} 2836b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 28496329d4e07a9bcddb5a927892b70408c8fd8c474Ted Kremenekstatic void HandleIBOutletAttr(Decl *d, const AttributeList &Attr, Sema &S) { 28596329d4e07a9bcddb5a927892b70408c8fd8c474Ted Kremenek // check the attribute arguments. 28696329d4e07a9bcddb5a927892b70408c8fd8c474Ted Kremenek if (Attr.getNumArgs() > 0) { 2873c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; 28896329d4e07a9bcddb5a927892b70408c8fd8c474Ted Kremenek return; 28996329d4e07a9bcddb5a927892b70408c8fd8c474Ted Kremenek } 29096329d4e07a9bcddb5a927892b70408c8fd8c474Ted Kremenek 29196329d4e07a9bcddb5a927892b70408c8fd8c474Ted Kremenek // The IBOutlet attribute only applies to instance variables of Objective-C 29296329d4e07a9bcddb5a927892b70408c8fd8c474Ted Kremenek // classes. 29396329d4e07a9bcddb5a927892b70408c8fd8c474Ted Kremenek if (ObjCIvarDecl *ID = dyn_cast<ObjCIvarDecl>(d)) 29496329d4e07a9bcddb5a927892b70408c8fd8c474Ted Kremenek ID->addAttr(new IBOutletAttr()); 29596329d4e07a9bcddb5a927892b70408c8fd8c474Ted Kremenek else 29696329d4e07a9bcddb5a927892b70408c8fd8c474Ted Kremenek S.Diag(Attr.getLoc(), diag::err_attribute_iboutlet_non_ivar); 29796329d4e07a9bcddb5a927892b70408c8fd8c474Ted Kremenek} 29896329d4e07a9bcddb5a927892b70408c8fd8c474Ted Kremenek 299eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenekstatic void HandleNonNullAttr(Decl *d, const AttributeList &Attr, Sema &S) { 300eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek // GCC ignores the nonnull attribute on K&R style function 301eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek // prototypes, so we ignore it as well 302d3f2c10f881311831a84114179342ff4db55e0c3Daniel Dunbar if (!isFunctionOrMethod(d) || !hasFunctionProto(d)) { 303fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) 304fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner << "nonnull" << "function"; 305eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek return; 306eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek } 307eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek 308d3f2c10f881311831a84114179342ff4db55e0c3Daniel Dunbar unsigned NumArgs = getFunctionOrMethodNumArgs(d); 309eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek 310eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek // The nonnull attribute only applies to pointers. 311eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek llvm::SmallVector<unsigned, 10> NonNullArgs; 312eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek 313eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek for (AttributeList::arg_iterator I=Attr.arg_begin(), 314eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek E=Attr.arg_end(); I!=E; ++I) { 315eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek 316eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek 317eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek // The argument must be an integer constant expression. 318eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek Expr *Ex = static_cast<Expr *>(Attr.getArg(0)); 319eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek llvm::APSInt ArgNum(32); 320eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek if (!Ex->isIntegerConstantExpr(ArgNum, S.Context)) { 321fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_argument_not_int) 322fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner << "nonnull" << Ex->getSourceRange(); 323eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek return; 324eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek } 325eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek 326eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek unsigned x = (unsigned) ArgNum.getZExtValue(); 327eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek 328eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek if (x < 1 || x > NumArgs) { 329fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_argument_out_of_bounds) 33030bc96544346bea42921cf6837e66cef80d664b4Chris Lattner << "nonnull" << I.getArgNum() << Ex->getSourceRange(); 331eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek return; 332eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek } 333465172f304248a9aab6f2c398a836ce4e25efbbfTed Kremenek 334465172f304248a9aab6f2c398a836ce4e25efbbfTed Kremenek --x; 335eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek 336eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek // Is the function argument a pointer type? 33746bbacac37141ed9d01d5b6473e8211554b02710Ted Kremenek QualType T = getFunctionOrMethodArgType(d, x); 33846bbacac37141ed9d01d5b6473e8211554b02710Ted Kremenek if (!T->isPointerType() && !T->isBlockPointerType()) { 339eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek // FIXME: Should also highlight argument in decl. 340fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_nonnull_pointers_only) 341fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner << "nonnull" << Ex->getSourceRange(); 3427fb43c17eb2b4102f40a80a355629aacd70589adTed Kremenek continue; 343eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek } 344eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek 345eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek NonNullArgs.push_back(x); 346eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek } 347eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek 3487fb43c17eb2b4102f40a80a355629aacd70589adTed Kremenek // If no arguments were specified to __attribute__((nonnull)) then all 3497fb43c17eb2b4102f40a80a355629aacd70589adTed Kremenek // pointer arguments have a nonnull attribute. 3507fb43c17eb2b4102f40a80a355629aacd70589adTed Kremenek if (NonNullArgs.empty()) { 35146bbacac37141ed9d01d5b6473e8211554b02710Ted Kremenek for (unsigned I = 0, E = getFunctionOrMethodNumArgs(d); I != E; ++I) { 35246bbacac37141ed9d01d5b6473e8211554b02710Ted Kremenek QualType T = getFunctionOrMethodArgType(d, I); 35346bbacac37141ed9d01d5b6473e8211554b02710Ted Kremenek if (T->isPointerType() || T->isBlockPointerType()) 354d3f2c10f881311831a84114179342ff4db55e0c3Daniel Dunbar NonNullArgs.push_back(I); 35546bbacac37141ed9d01d5b6473e8211554b02710Ted Kremenek } 3567fb43c17eb2b4102f40a80a355629aacd70589adTed Kremenek 3577fb43c17eb2b4102f40a80a355629aacd70589adTed Kremenek if (NonNullArgs.empty()) { 3587fb43c17eb2b4102f40a80a355629aacd70589adTed Kremenek S.Diag(Attr.getLoc(), diag::warn_attribute_nonnull_no_pointers); 3597fb43c17eb2b4102f40a80a355629aacd70589adTed Kremenek return; 3607fb43c17eb2b4102f40a80a355629aacd70589adTed Kremenek } 361eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek } 3627fb43c17eb2b4102f40a80a355629aacd70589adTed Kremenek 3637fb43c17eb2b4102f40a80a355629aacd70589adTed Kremenek unsigned* start = &NonNullArgs[0]; 3647fb43c17eb2b4102f40a80a355629aacd70589adTed Kremenek unsigned size = NonNullArgs.size(); 3657fb43c17eb2b4102f40a80a355629aacd70589adTed Kremenek std::sort(start, start + size); 3667fb43c17eb2b4102f40a80a355629aacd70589adTed Kremenek d->addAttr(new NonNullAttr(start, size)); 367eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek} 368eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek 369803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattnerstatic void HandleAliasAttr(Decl *d, const AttributeList &Attr, Sema &S) { 3706b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // check the attribute arguments. 371545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner if (Attr.getNumArgs() != 1) { 3723c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; 3736b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 3746b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 3756b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 376545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner Expr *Arg = static_cast<Expr*>(Attr.getArg(0)); 3776b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner Arg = Arg->IgnoreParenCasts(); 3786b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner StringLiteral *Str = dyn_cast<StringLiteral>(Arg); 3796b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 3806b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner if (Str == 0 || Str->isWide()) { 381fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_string) 3823c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner << "alias" << 1; 3836b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 3846b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 3856b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 3866b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner const char *Alias = Str->getStrData(); 3876b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner unsigned AliasLen = Str->getByteLength(); 3886b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 3896b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // FIXME: check if target symbol exists in current file 3906b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 3916b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner d->addAttr(new AliasAttr(std::string(Alias, AliasLen))); 3926b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner} 3936b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 394af668b0e7d3581dea3b4f29a9262686e83887e5bDaniel Dunbarstatic void HandleAlwaysInlineAttr(Decl *d, const AttributeList &Attr, 395af668b0e7d3581dea3b4f29a9262686e83887e5bDaniel Dunbar Sema &S) { 396af668b0e7d3581dea3b4f29a9262686e83887e5bDaniel Dunbar // check the attribute arguments. 397af668b0e7d3581dea3b4f29a9262686e83887e5bDaniel Dunbar if (Attr.getNumArgs() != 0) { 3983c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; 399af668b0e7d3581dea3b4f29a9262686e83887e5bDaniel Dunbar return; 400af668b0e7d3581dea3b4f29a9262686e83887e5bDaniel Dunbar } 401af668b0e7d3581dea3b4f29a9262686e83887e5bDaniel Dunbar 402af668b0e7d3581dea3b4f29a9262686e83887e5bDaniel Dunbar d->addAttr(new AlwaysInlineAttr()); 403af668b0e7d3581dea3b4f29a9262686e83887e5bDaniel Dunbar} 404af668b0e7d3581dea3b4f29a9262686e83887e5bDaniel Dunbar 405803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattnerstatic void HandleNoReturnAttr(Decl *d, const AttributeList &Attr, Sema &S) { 4066b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // check the attribute arguments. 407545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner if (Attr.getNumArgs() != 0) { 4083c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; 4096b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 4106b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 411d3f2c10f881311831a84114179342ff4db55e0c3Daniel Dunbar 412d3f2c10f881311831a84114179342ff4db55e0c3Daniel Dunbar if (!isFunctionOrMethod(d)) { 413fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) 414fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner << "noreturn" << "function"; 4156b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 4166b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 4176b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 4186b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner d->addAttr(new NoReturnAttr()); 4196b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner} 4206b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 42173798892751e378cbcdef43579c1d41685091fd0Ted Kremenekstatic void HandleUnusedAttr(Decl *d, const AttributeList &Attr, Sema &S) { 42273798892751e378cbcdef43579c1d41685091fd0Ted Kremenek // check the attribute arguments. 42373798892751e378cbcdef43579c1d41685091fd0Ted Kremenek if (Attr.getNumArgs() != 0) { 4243c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; 42573798892751e378cbcdef43579c1d41685091fd0Ted Kremenek return; 42673798892751e378cbcdef43579c1d41685091fd0Ted Kremenek } 42773798892751e378cbcdef43579c1d41685091fd0Ted Kremenek 428d3f2c10f881311831a84114179342ff4db55e0c3Daniel Dunbar if (!isa<VarDecl>(d) && !isFunctionOrMethod(d)) { 429fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) 430fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner << "unused" << "variable and function"; 43173798892751e378cbcdef43579c1d41685091fd0Ted Kremenek return; 43273798892751e378cbcdef43579c1d41685091fd0Ted Kremenek } 43373798892751e378cbcdef43579c1d41685091fd0Ted Kremenek 43473798892751e378cbcdef43579c1d41685091fd0Ted Kremenek d->addAttr(new UnusedAttr()); 43573798892751e378cbcdef43579c1d41685091fd0Ted Kremenek} 43673798892751e378cbcdef43579c1d41685091fd0Ted Kremenek 4373068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbarstatic void HandleConstructorAttr(Decl *d, const AttributeList &Attr, Sema &S) { 4383068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar // check the attribute arguments. 4393068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar if (Attr.getNumArgs() != 0 && Attr.getNumArgs() != 1) { 440fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) 441fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner << "0 or 1"; 4423068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar return; 4433068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar } 4443068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar 4453068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar int priority = 65535; // FIXME: Do not hardcode such constants. 4463068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar if (Attr.getNumArgs() > 0) { 4473068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar Expr *E = static_cast<Expr *>(Attr.getArg(0)); 4483068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar llvm::APSInt Idx(32); 4493068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar if (!E->isIntegerConstantExpr(Idx, S.Context)) { 450fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_int) 4513c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner << "constructor" << 1 << E->getSourceRange(); 4523068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar return; 4533068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar } 4543068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar priority = Idx.getZExtValue(); 4553068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar } 4563068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar 4573068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar FunctionDecl *Fn = dyn_cast<FunctionDecl>(d); 4583068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar if (!Fn) { 459fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) 460fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner << "constructor" << "function"; 4613068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar return; 4623068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar } 4633068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar 4643068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar d->addAttr(new ConstructorAttr(priority)); 4653068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar} 4663068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar 4673068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbarstatic void HandleDestructorAttr(Decl *d, const AttributeList &Attr, Sema &S) { 4683068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar // check the attribute arguments. 4693068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar if (Attr.getNumArgs() != 0 && Attr.getNumArgs() != 1) { 470fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) 471fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner << "0 or 1"; 4723068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar return; 4733068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar } 4743068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar 4753068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar int priority = 65535; // FIXME: Do not hardcode such constants. 4763068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar if (Attr.getNumArgs() > 0) { 4773068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar Expr *E = static_cast<Expr *>(Attr.getArg(0)); 4783068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar llvm::APSInt Idx(32); 4793068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar if (!E->isIntegerConstantExpr(Idx, S.Context)) { 480fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_int) 4813c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner << "destructor" << 1 << E->getSourceRange(); 4823068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar return; 4833068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar } 4843068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar priority = Idx.getZExtValue(); 4853068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar } 4863068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar 4876782fc6925a85c3772253e272745589a0c799c15Anders Carlsson if (!isa<FunctionDecl>(d)) { 488fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) 489fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner << "destructor" << "function"; 4903068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar return; 4913068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar } 4923068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar 4933068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar d->addAttr(new DestructorAttr(priority)); 4943068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar} 4953068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar 496803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattnerstatic void HandleDeprecatedAttr(Decl *d, const AttributeList &Attr, Sema &S) { 4976b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // check the attribute arguments. 498545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner if (Attr.getNumArgs() != 0) { 4993c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; 5006b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 5016b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 5026b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 5036b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner d->addAttr(new DeprecatedAttr()); 5046b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner} 5056b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 506803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattnerstatic void HandleVisibilityAttr(Decl *d, const AttributeList &Attr, Sema &S) { 5076b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // check the attribute arguments. 508545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner if (Attr.getNumArgs() != 1) { 5093c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; 5106b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 5116b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 5126b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 513545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner Expr *Arg = static_cast<Expr*>(Attr.getArg(0)); 5146b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner Arg = Arg->IgnoreParenCasts(); 5156b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner StringLiteral *Str = dyn_cast<StringLiteral>(Arg); 5166b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 5176b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner if (Str == 0 || Str->isWide()) { 518fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_string) 5193c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner << "visibility" << 1; 5206b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 5216b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 5226b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 5236b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner const char *TypeStr = Str->getStrData(); 5246b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner unsigned TypeLen = Str->getByteLength(); 5256b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner VisibilityAttr::VisibilityTypes type; 5266b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 5276b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner if (TypeLen == 7 && !memcmp(TypeStr, "default", 7)) 5286b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner type = VisibilityAttr::DefaultVisibility; 5296b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner else if (TypeLen == 6 && !memcmp(TypeStr, "hidden", 6)) 5306b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner type = VisibilityAttr::HiddenVisibility; 5316b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner else if (TypeLen == 8 && !memcmp(TypeStr, "internal", 8)) 5326b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner type = VisibilityAttr::HiddenVisibility; // FIXME 5336b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner else if (TypeLen == 9 && !memcmp(TypeStr, "protected", 9)) 5346b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner type = VisibilityAttr::ProtectedVisibility; 5356b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner else { 536fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::warn_attribute_type_not_supported) 537fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner << "visibility" << TypeStr; 5386b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 5396b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 5406b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 5416b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner d->addAttr(new VisibilityAttr(type)); 5426b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner} 5436b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 544aa0d25b44e510a5a62e7345f4fa3840a886841d2Anders Carlssonstatic void HandleObjCGCAttr(Decl *d, const AttributeList &Attr, Sema &S) { 5456e14a8f2ac4af8e3741eac8e9dccec0061bc7166Anders Carlsson if (!Attr.getParameterName()) { 546fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_string) 5473c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner << "objc_gc" << 1; 548aa0d25b44e510a5a62e7345f4fa3840a886841d2Anders Carlsson return; 549aa0d25b44e510a5a62e7345f4fa3840a886841d2Anders Carlsson } 550aa0d25b44e510a5a62e7345f4fa3840a886841d2Anders Carlsson 551aa0d25b44e510a5a62e7345f4fa3840a886841d2Anders Carlsson if (Attr.getNumArgs() != 0) { 5523c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; 553aa0d25b44e510a5a62e7345f4fa3840a886841d2Anders Carlsson return; 554aa0d25b44e510a5a62e7345f4fa3840a886841d2Anders Carlsson } 555aa0d25b44e510a5a62e7345f4fa3840a886841d2Anders Carlsson 556aa0d25b44e510a5a62e7345f4fa3840a886841d2Anders Carlsson 557aa0d25b44e510a5a62e7345f4fa3840a886841d2Anders Carlsson ObjCGCAttr::GCAttrTypes type; 5583c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner if (Attr.getParameterName()->isName("weak")) 559aa0d25b44e510a5a62e7345f4fa3840a886841d2Anders Carlsson type = ObjCGCAttr::Weak; 5603c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner else if (Attr.getParameterName()->isName("strong")) 561aa0d25b44e510a5a62e7345f4fa3840a886841d2Anders Carlsson type = ObjCGCAttr::Strong; 562aa0d25b44e510a5a62e7345f4fa3840a886841d2Anders Carlsson else { 563fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::warn_attribute_type_not_supported) 5643c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner << "objc_gc" << Attr.getParameterName(); 565aa0d25b44e510a5a62e7345f4fa3840a886841d2Anders Carlsson return; 566aa0d25b44e510a5a62e7345f4fa3840a886841d2Anders Carlsson } 567aa0d25b44e510a5a62e7345f4fa3840a886841d2Anders Carlsson 568aa0d25b44e510a5a62e7345f4fa3840a886841d2Anders Carlsson d->addAttr(new ObjCGCAttr(type)); 569aa0d25b44e510a5a62e7345f4fa3840a886841d2Anders Carlsson} 570aa0d25b44e510a5a62e7345f4fa3840a886841d2Anders Carlsson 5719eae5761c0691c0f11d7a823b8ee54f05786cbbeSteve Naroffstatic void HandleBlocksAttr(Decl *d, const AttributeList &Attr, Sema &S) { 5729eae5761c0691c0f11d7a823b8ee54f05786cbbeSteve Naroff if (!Attr.getParameterName()) { 573fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_string) 5743c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner << "blocks" << 1; 5759eae5761c0691c0f11d7a823b8ee54f05786cbbeSteve Naroff return; 5769eae5761c0691c0f11d7a823b8ee54f05786cbbeSteve Naroff } 5779eae5761c0691c0f11d7a823b8ee54f05786cbbeSteve Naroff 5789eae5761c0691c0f11d7a823b8ee54f05786cbbeSteve Naroff if (Attr.getNumArgs() != 0) { 5793c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; 5809eae5761c0691c0f11d7a823b8ee54f05786cbbeSteve Naroff return; 5819eae5761c0691c0f11d7a823b8ee54f05786cbbeSteve Naroff } 5829eae5761c0691c0f11d7a823b8ee54f05786cbbeSteve Naroff 5839eae5761c0691c0f11d7a823b8ee54f05786cbbeSteve Naroff BlocksAttr::BlocksAttrTypes type; 5843c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner if (Attr.getParameterName()->isName("byref")) 5859eae5761c0691c0f11d7a823b8ee54f05786cbbeSteve Naroff type = BlocksAttr::ByRef; 5869eae5761c0691c0f11d7a823b8ee54f05786cbbeSteve Naroff else { 587fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::warn_attribute_type_not_supported) 5883c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner << "blocks" << Attr.getParameterName(); 5899eae5761c0691c0f11d7a823b8ee54f05786cbbeSteve Naroff return; 5909eae5761c0691c0f11d7a823b8ee54f05786cbbeSteve Naroff } 5919eae5761c0691c0f11d7a823b8ee54f05786cbbeSteve Naroff 5929eae5761c0691c0f11d7a823b8ee54f05786cbbeSteve Naroff d->addAttr(new BlocksAttr(type)); 5939eae5761c0691c0f11d7a823b8ee54f05786cbbeSteve Naroff} 5949eae5761c0691c0f11d7a823b8ee54f05786cbbeSteve Naroff 595770918281c5bdc7b5b3942285c407e3d62270053Anders Carlssonstatic void HandleSentinelAttr(Decl *d, const AttributeList &Attr, Sema &S) { 596770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson // check the attribute arguments. 597770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson if (Attr.getNumArgs() > 2) { 598fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) 599fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner << "0, 1 or 2"; 600770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson return; 601770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson } 602770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson 603770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson int sentinel = 0; 604770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson if (Attr.getNumArgs() > 0) { 605770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson Expr *E = static_cast<Expr *>(Attr.getArg(0)); 606770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson llvm::APSInt Idx(32); 607770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson if (!E->isIntegerConstantExpr(Idx, S.Context)) { 608fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_int) 6093c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner << "sentinel" << 1 << E->getSourceRange(); 610770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson return; 611770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson } 612770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson sentinel = Idx.getZExtValue(); 613770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson 614770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson if (sentinel < 0) { 615fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_sentinel_less_than_zero) 616fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner << E->getSourceRange(); 617770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson return; 618770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson } 619770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson } 620770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson 621770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson int nullPos = 0; 622770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson if (Attr.getNumArgs() > 1) { 623770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson Expr *E = static_cast<Expr *>(Attr.getArg(1)); 624770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson llvm::APSInt Idx(32); 625770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson if (!E->isIntegerConstantExpr(Idx, S.Context)) { 626fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_int) 6273c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner << "sentinel" << 2 << E->getSourceRange(); 628770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson return; 629770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson } 630770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson nullPos = Idx.getZExtValue(); 631770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson 632770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson if (nullPos > 1 || nullPos < 0) { 633770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson // FIXME: This error message could be improved, it would be nice 634770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson // to say what the bounds actually are. 635fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_sentinel_not_zero_or_one) 636fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner << E->getSourceRange(); 637770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson return; 638770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson } 639770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson } 640770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson 641770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson if (FunctionDecl *FD = dyn_cast<FunctionDecl>(d)) { 642770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson QualType FT = FD->getType(); 643770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson if (!FT->getAsFunctionTypeProto()->isVariadic()) { 644770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson S.Diag(Attr.getLoc(), diag::warn_attribute_sentinel_not_variadic); 645770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson return; 646770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson } 647770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson } else if (ObjCMethodDecl *MD = dyn_cast<ObjCMethodDecl>(d)) { 648770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson if (!MD->isVariadic()) { 649770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson S.Diag(Attr.getLoc(), diag::warn_attribute_sentinel_not_variadic); 650770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson return; 651770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson } 652770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson } else { 653fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) 654fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner << "sentinel" << "function or method"; 655770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson return; 656770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson } 657770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson 658770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson // FIXME: Actually create the attribute. 659770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson} 660770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson 661803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattnerstatic void HandleWeakAttr(Decl *d, const AttributeList &Attr, Sema &S) { 6626b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // check the attribute arguments. 663545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner if (Attr.getNumArgs() != 0) { 6643c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; 6656b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 6666b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 6676b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 6686b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner d->addAttr(new WeakAttr()); 6696b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner} 6706b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 671803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattnerstatic void HandleDLLImportAttr(Decl *d, const AttributeList &Attr, Sema &S) { 6726b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // check the attribute arguments. 673545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner if (Attr.getNumArgs() != 0) { 6743c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; 6756b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 6766b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 6776b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 6786b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner d->addAttr(new DLLImportAttr()); 6796b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner} 6806b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 681803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattnerstatic void HandleDLLExportAttr(Decl *d, const AttributeList &Attr, Sema &S) { 6826b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // check the attribute arguments. 683545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner if (Attr.getNumArgs() != 0) { 6843c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; 6856b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 6866b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 6876b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 6886b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner d->addAttr(new DLLExportAttr()); 6896b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner} 6906b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 691803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattnerstatic void HandleStdCallAttr(Decl *d, const AttributeList &Attr, Sema &S) { 6926b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // check the attribute arguments. 693545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner if (Attr.getNumArgs() != 0) { 6943c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; 6956b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 6966b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 6976b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 6986b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner d->addAttr(new StdCallAttr()); 6996b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner} 7006b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 701803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattnerstatic void HandleFastCallAttr(Decl *d, const AttributeList &Attr, Sema &S) { 7026b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // check the attribute arguments. 703545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner if (Attr.getNumArgs() != 0) { 7043c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; 7056b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 7066b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 7076b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 7086b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner d->addAttr(new FastCallAttr()); 7096b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner} 7106b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 711803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattnerstatic void HandleNothrowAttr(Decl *d, const AttributeList &Attr, Sema &S) { 7126b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // check the attribute arguments. 713545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner if (Attr.getNumArgs() != 0) { 7143c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; 7156b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 7166b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 7176b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 7186b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner d->addAttr(new NoThrowAttr()); 7196b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner} 7206b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 721232eb7d33b96ad8f99de3b5ae840421b3a7c6cb7Anders Carlssonstatic void HandleConstAttr(Decl *d, const AttributeList &Attr, Sema &S) { 722232eb7d33b96ad8f99de3b5ae840421b3a7c6cb7Anders Carlsson // check the attribute arguments. 723232eb7d33b96ad8f99de3b5ae840421b3a7c6cb7Anders Carlsson if (Attr.getNumArgs() != 0) { 7243c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; 725232eb7d33b96ad8f99de3b5ae840421b3a7c6cb7Anders Carlsson return; 726232eb7d33b96ad8f99de3b5ae840421b3a7c6cb7Anders Carlsson } 727232eb7d33b96ad8f99de3b5ae840421b3a7c6cb7Anders Carlsson 728232eb7d33b96ad8f99de3b5ae840421b3a7c6cb7Anders Carlsson d->addAttr(new ConstAttr()); 729232eb7d33b96ad8f99de3b5ae840421b3a7c6cb7Anders Carlsson} 730232eb7d33b96ad8f99de3b5ae840421b3a7c6cb7Anders Carlsson 731232eb7d33b96ad8f99de3b5ae840421b3a7c6cb7Anders Carlssonstatic void HandlePureAttr(Decl *d, const AttributeList &Attr, Sema &S) { 732232eb7d33b96ad8f99de3b5ae840421b3a7c6cb7Anders Carlsson // check the attribute arguments. 733232eb7d33b96ad8f99de3b5ae840421b3a7c6cb7Anders Carlsson if (Attr.getNumArgs() != 0) { 7343c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; 735232eb7d33b96ad8f99de3b5ae840421b3a7c6cb7Anders Carlsson return; 736232eb7d33b96ad8f99de3b5ae840421b3a7c6cb7Anders Carlsson } 737232eb7d33b96ad8f99de3b5ae840421b3a7c6cb7Anders Carlsson 738232eb7d33b96ad8f99de3b5ae840421b3a7c6cb7Anders Carlsson d->addAttr(new PureAttr()); 739232eb7d33b96ad8f99de3b5ae840421b3a7c6cb7Anders Carlsson} 740232eb7d33b96ad8f99de3b5ae840421b3a7c6cb7Anders Carlsson 7416b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner/// Handle __attribute__((format(type,idx,firstarg))) attributes 7426b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner/// based on http://gcc.gnu.org/onlinedocs/gcc/Function-Attributes.html 743803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattnerstatic void HandleFormatAttr(Decl *d, const AttributeList &Attr, Sema &S) { 7446b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 745545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner if (!Attr.getParameterName()) { 746fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_string) 7473c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner << "format" << 1; 7486b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 7496b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 7506b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 751545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner if (Attr.getNumArgs() != 2) { 7523c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 3; 7536b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 7546b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 7556b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 756d3f2c10f881311831a84114179342ff4db55e0c3Daniel Dunbar if (!isFunctionOrMethod(d) || !hasFunctionProto(d)) { 757fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) 758fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner << "format" << "function"; 7596b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 7606b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 7616b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 7626b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // FIXME: in C++ the implicit 'this' function parameter also counts. 7636b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // this is needed in order to be compatible with GCC 7646b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // the index must start in 1 and the limit is numargs+1 7653568249c2d72d58b835a22d9186f5a6b4fc4bcd6Daniel Dunbar unsigned NumArgs = getFunctionOrMethodNumArgs(d); 7666b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner unsigned FirstIdx = 1; 7676b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 768545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner const char *Format = Attr.getParameterName()->getName(); 769545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner unsigned FormatLen = Attr.getParameterName()->getLength(); 7706b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 7716b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // Normalize the argument, __foo__ becomes foo. 7726b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner if (FormatLen > 4 && Format[0] == '_' && Format[1] == '_' && 7736b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner Format[FormatLen - 2] == '_' && Format[FormatLen - 1] == '_') { 7746b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner Format += 2; 7756b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner FormatLen -= 4; 7766b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 7776b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 7786b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner bool Supported = false; 7796b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner bool is_NSString = false; 7806b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner bool is_strftime = false; 781085e8f7da37a227ceee7f98b724e0a42e04d01caDaniel Dunbar bool is_CFString = false; 7826b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 7836b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner switch (FormatLen) { 7846b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner default: break; 785803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner case 5: Supported = !memcmp(Format, "scanf", 5); break; 786803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner case 6: Supported = !memcmp(Format, "printf", 6); break; 787803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner case 7: Supported = !memcmp(Format, "strfmon", 7); break; 7886b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner case 8: 789085e8f7da37a227ceee7f98b724e0a42e04d01caDaniel Dunbar Supported = (is_strftime = !memcmp(Format, "strftime", 8)) || 790085e8f7da37a227ceee7f98b724e0a42e04d01caDaniel Dunbar (is_NSString = !memcmp(Format, "NSString", 8)) || 791085e8f7da37a227ceee7f98b724e0a42e04d01caDaniel Dunbar (is_CFString = !memcmp(Format, "CFString", 8)); 7926b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner break; 7936b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 7946b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 7956b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner if (!Supported) { 796fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::warn_attribute_type_not_supported) 797fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner << "format" << Attr.getParameterName()->getName(); 7986b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 7996b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 8006b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 8016b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // checks for the 2nd argument 802545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner Expr *IdxExpr = static_cast<Expr *>(Attr.getArg(0)); 803803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner llvm::APSInt Idx(32); 804803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner if (!IdxExpr->isIntegerConstantExpr(Idx, S.Context)) { 805fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_int) 8063c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner << "format" << 2 << IdxExpr->getSourceRange(); 8076b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 8086b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 8096b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 8106b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner if (Idx.getZExtValue() < FirstIdx || Idx.getZExtValue() > NumArgs) { 811fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_argument_out_of_bounds) 8123c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner << "format" << 2 << IdxExpr->getSourceRange(); 8136b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 8146b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 8156b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 8166b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // FIXME: Do we need to bounds check? 8176b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner unsigned ArgIdx = Idx.getZExtValue() - 1; 8186b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 8196b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // make sure the format string is really a string 8203568249c2d72d58b835a22d9186f5a6b4fc4bcd6Daniel Dunbar QualType Ty = getFunctionOrMethodArgType(d, ArgIdx); 8216b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 822085e8f7da37a227ceee7f98b724e0a42e04d01caDaniel Dunbar if (is_CFString) { 823085e8f7da37a227ceee7f98b724e0a42e04d01caDaniel Dunbar if (!isCFStringType(Ty, S.Context)) { 824fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_format_attribute_not) 825fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner << "a CFString" << IdxExpr->getSourceRange(); 826085e8f7da37a227ceee7f98b724e0a42e04d01caDaniel Dunbar return; 827085e8f7da37a227ceee7f98b724e0a42e04d01caDaniel Dunbar } 828085e8f7da37a227ceee7f98b724e0a42e04d01caDaniel Dunbar } else if (is_NSString) { 8296b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // FIXME: do we need to check if the type is NSString*? What are 8306b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // the semantics? 831803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner if (!isNSStringType(Ty, S.Context)) { 8326b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // FIXME: Should highlight the actual expression that has the 8336b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // wrong type. 834fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_format_attribute_not) 835fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner << "an NSString" << IdxExpr->getSourceRange(); 8366b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 8376b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 8386b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } else if (!Ty->isPointerType() || 8396b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner !Ty->getAsPointerType()->getPointeeType()->isCharType()) { 8406b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // FIXME: Should highlight the actual expression that has the 8416b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // wrong type. 842fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_format_attribute_not) 843fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner << "a string type" << IdxExpr->getSourceRange(); 8446b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 8456b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 8466b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 8476b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // check the 3rd argument 848545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner Expr *FirstArgExpr = static_cast<Expr *>(Attr.getArg(1)); 849803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner llvm::APSInt FirstArg(32); 850803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner if (!FirstArgExpr->isIntegerConstantExpr(FirstArg, S.Context)) { 851fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_int) 8523c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner << "format" << 3 << FirstArgExpr->getSourceRange(); 8536b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 8546b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 8556b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 8566b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // check if the function is variadic if the 3rd argument non-zero 8576b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner if (FirstArg != 0) { 8583568249c2d72d58b835a22d9186f5a6b4fc4bcd6Daniel Dunbar if (isFunctionOrMethodVariadic(d)) { 8596b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner ++NumArgs; // +1 for ... 8606b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } else { 861803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner S.Diag(d->getLocation(), diag::err_format_attribute_requires_variadic); 8626b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 8636b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 8646b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 8656b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 8663c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner // strftime requires FirstArg to be 0 because it doesn't read from any 8673c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner // variable the input is just the current time + the format string. 8686b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner if (is_strftime) { 8696b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner if (FirstArg != 0) { 870fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_format_strftime_third_parameter) 871fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner << FirstArgExpr->getSourceRange(); 8726b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 8736b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 8746b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // if 0 it disables parameter checking (to use with e.g. va_list) 8756b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } else if (FirstArg != 0 && FirstArg != NumArgs) { 876fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_argument_out_of_bounds) 8773c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner << "format" << 3 << FirstArgExpr->getSourceRange(); 8786b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 8796b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 8806b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 8816b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner d->addAttr(new FormatAttr(std::string(Format, FormatLen), 8826b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner Idx.getZExtValue(), FirstArg.getZExtValue())); 8836b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner} 8846b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 8850b2f4da7651feb6edab5e4a657fce058f0dd514aChris Lattnerstatic void HandleTransparentUnionAttr(Decl *d, const AttributeList &Attr, 8860b2f4da7651feb6edab5e4a657fce058f0dd514aChris Lattner Sema &S) { 8876b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // check the attribute arguments. 888545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner if (Attr.getNumArgs() != 0) { 8893c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; 8906b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 8916b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 8926b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 893bc88745b43f440341e60ed93b0d27bac7c418029Eli Friedman // FIXME: This shouldn't be restricted to typedefs 894bc88745b43f440341e60ed93b0d27bac7c418029Eli Friedman TypedefDecl *TD = dyn_cast<TypedefDecl>(d); 895bc88745b43f440341e60ed93b0d27bac7c418029Eli Friedman if (!TD || !TD->getUnderlyingType()->isUnionType()) { 896fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) 897fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner << "transparent_union" << "union"; 8986b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 8996b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 9006b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 901bc88745b43f440341e60ed93b0d27bac7c418029Eli Friedman RecordDecl* RD = TD->getUnderlyingType()->getAsUnionType()->getDecl(); 902bc88745b43f440341e60ed93b0d27bac7c418029Eli Friedman 903bc88745b43f440341e60ed93b0d27bac7c418029Eli Friedman // FIXME: Should we do a check for RD->isDefinition()? 904bc88745b43f440341e60ed93b0d27bac7c418029Eli Friedman 905bc88745b43f440341e60ed93b0d27bac7c418029Eli Friedman // FIXME: This isn't supposed to be restricted to pointers, but otherwise 906bc88745b43f440341e60ed93b0d27bac7c418029Eli Friedman // we might silently generate incorrect code; see following code 907bc88745b43f440341e60ed93b0d27bac7c418029Eli Friedman for (int i = 0; i < RD->getNumMembers(); i++) { 908bc88745b43f440341e60ed93b0d27bac7c418029Eli Friedman if (!RD->getMember(i)->getType()->isPointerType()) { 909bc88745b43f440341e60ed93b0d27bac7c418029Eli Friedman S.Diag(Attr.getLoc(), diag::warn_transparent_union_nonpointer); 910bc88745b43f440341e60ed93b0d27bac7c418029Eli Friedman return; 911bc88745b43f440341e60ed93b0d27bac7c418029Eli Friedman } 912bc88745b43f440341e60ed93b0d27bac7c418029Eli Friedman } 9136b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 914bc88745b43f440341e60ed93b0d27bac7c418029Eli Friedman // FIXME: This is a complete hack; we should be properly propagating 915bc88745b43f440341e60ed93b0d27bac7c418029Eli Friedman // transparent_union through Sema. That said, this is close enough to 916bc88745b43f440341e60ed93b0d27bac7c418029Eli Friedman // correctly compile all the common cases of transparent_union without 917bc88745b43f440341e60ed93b0d27bac7c418029Eli Friedman // errors or warnings 918bc88745b43f440341e60ed93b0d27bac7c418029Eli Friedman QualType NewTy = S.Context.VoidPtrTy; 919bc88745b43f440341e60ed93b0d27bac7c418029Eli Friedman NewTy.addConst(); 920bc88745b43f440341e60ed93b0d27bac7c418029Eli Friedman TD->setUnderlyingType(NewTy); 9216b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner} 9226b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 9230b2f4da7651feb6edab5e4a657fce058f0dd514aChris Lattnerstatic void HandleAnnotateAttr(Decl *d, const AttributeList &Attr, Sema &S) { 9246b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // check the attribute arguments. 925545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner if (Attr.getNumArgs() != 1) { 9263c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; 9276b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 9286b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 929545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner Expr *argExpr = static_cast<Expr *>(Attr.getArg(0)); 9306b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner StringLiteral *SE = dyn_cast<StringLiteral>(argExpr); 9316b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 9326b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // Make sure that there is a string literal as the annotation's single 9336b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // argument. 9346b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner if (!SE) { 9350b2f4da7651feb6edab5e4a657fce058f0dd514aChris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_annotate_no_string); 9366b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 9376b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 9386b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner d->addAttr(new AnnotateAttr(std::string(SE->getStrData(), 9396b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner SE->getByteLength()))); 9406b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner} 9416b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 942803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattnerstatic void HandleAlignedAttr(Decl *d, const AttributeList &Attr, Sema &S) { 9436b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // check the attribute arguments. 944545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner if (Attr.getNumArgs() > 1) { 9453c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; 9466b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 9476b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 9486b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 9496b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner unsigned Align = 0; 950545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner if (Attr.getNumArgs() == 0) { 9516b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // FIXME: This should be the target specific maximum alignment. 9526b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // (For now we just use 128 bits which is the maximum on X86. 9536b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner Align = 128; 9546b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 9556b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 95649e2d34f74f98bef23e37c415ce90cd783cdea24Chris Lattner 95749e2d34f74f98bef23e37c415ce90cd783cdea24Chris Lattner Expr *alignmentExpr = static_cast<Expr *>(Attr.getArg(0)); 95849e2d34f74f98bef23e37c415ce90cd783cdea24Chris Lattner llvm::APSInt Alignment(32); 959803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner if (!alignmentExpr->isIntegerConstantExpr(Alignment, S.Context)) { 960fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_argument_not_int) 961fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner << "aligned" << alignmentExpr->getSourceRange(); 96249e2d34f74f98bef23e37c415ce90cd783cdea24Chris Lattner return; 96349e2d34f74f98bef23e37c415ce90cd783cdea24Chris Lattner } 96449e2d34f74f98bef23e37c415ce90cd783cdea24Chris Lattner d->addAttr(new AlignedAttr(Alignment.getZExtValue() * 8)); 9656b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner} 966fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner 9670b2f4da7651feb6edab5e4a657fce058f0dd514aChris Lattner/// HandleModeAttr - This attribute modifies the width of a decl with 968065c5a801f46dda8ff0cd6ad954c4e5f94a3be75Chris Lattner/// primitive type. 969fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner/// 970fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner/// Despite what would be logical, the mode attribute is a decl attribute, 971fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner/// not a type attribute: 'int ** __attribute((mode(HI))) *G;' tries to make 972fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner/// 'G' be HImode, not an intermediate pointer. 973fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner/// 9740b2f4da7651feb6edab5e4a657fce058f0dd514aChris Lattnerstatic void HandleModeAttr(Decl *D, const AttributeList &Attr, Sema &S) { 975fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner // This attribute isn't documented, but glibc uses it. It changes 976fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner // the width of an int or unsigned int to the specified size. 977fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner 978fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner // Check that there aren't any arguments 979fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner if (Attr.getNumArgs() != 0) { 9803c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; 981fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner return; 982fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner } 983fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner 984fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner IdentifierInfo *Name = Attr.getParameterName(); 985fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner if (!Name) { 9860b2f4da7651feb6edab5e4a657fce058f0dd514aChris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_missing_parameter_name); 987fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner return; 988fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner } 989fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner const char *Str = Name->getName(); 990fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner unsigned Len = Name->getLength(); 991fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner 992fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner // Normalize the attribute name, __foo__ becomes foo. 993fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner if (Len > 4 && Str[0] == '_' && Str[1] == '_' && 994fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner Str[Len - 2] == '_' && Str[Len - 1] == '_') { 995fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner Str += 2; 996fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner Len -= 4; 997fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner } 998fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner 999fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner unsigned DestWidth = 0; 1000fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner bool IntegerMode = true; 1001fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner switch (Len) { 1002fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner case 2: 1003fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner if (!memcmp(Str, "QI", 2)) { DestWidth = 8; break; } 1004fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner if (!memcmp(Str, "HI", 2)) { DestWidth = 16; break; } 1005fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner if (!memcmp(Str, "SI", 2)) { DestWidth = 32; break; } 1006fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner if (!memcmp(Str, "DI", 2)) { DestWidth = 64; break; } 1007fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner if (!memcmp(Str, "TI", 2)) { DestWidth = 128; break; } 1008fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner if (!memcmp(Str, "SF", 2)) { DestWidth = 32; IntegerMode = false; break; } 1009fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner if (!memcmp(Str, "DF", 2)) { DestWidth = 64; IntegerMode = false; break; } 1010fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner if (!memcmp(Str, "XF", 2)) { DestWidth = 96; IntegerMode = false; break; } 1011fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner if (!memcmp(Str, "TF", 2)) { DestWidth = 128; IntegerMode = false; break; } 1012fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner break; 1013fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner case 4: 1014fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner // FIXME: glibc uses 'word' to define register_t; this is narrower than a 1015fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner // pointer on PIC16 and other embedded platforms. 1016fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner if (!memcmp(Str, "word", 4)) 10170b2f4da7651feb6edab5e4a657fce058f0dd514aChris Lattner DestWidth = S.Context.Target.getPointerWidth(0); 1018fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner if (!memcmp(Str, "byte", 4)) 10190b2f4da7651feb6edab5e4a657fce058f0dd514aChris Lattner DestWidth = S.Context.Target.getCharWidth(); 1020fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner break; 1021fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner case 7: 1022fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner if (!memcmp(Str, "pointer", 7)) 10230b2f4da7651feb6edab5e4a657fce058f0dd514aChris Lattner DestWidth = S.Context.Target.getPointerWidth(0); 1024fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner break; 1025fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner } 1026fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner 1027fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner QualType OldTy; 1028fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner if (TypedefDecl *TD = dyn_cast<TypedefDecl>(D)) 1029fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner OldTy = TD->getUnderlyingType(); 1030fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner else if (ValueDecl *VD = dyn_cast<ValueDecl>(D)) 1031fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner OldTy = VD->getType(); 1032fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner else { 1033fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(D->getLocation(), diag::err_attr_wrong_decl) 1034fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner << "mode" << SourceRange(Attr.getLoc(), Attr.getLoc()); 1035fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner return; 1036fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner } 1037fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner 1038fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner // FIXME: Need proper fixed-width types 1039fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner QualType NewTy; 1040fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner switch (DestWidth) { 1041fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner case 0: 10423c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner S.Diag(Attr.getLoc(), diag::err_unknown_machine_mode) << Name; 1043fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner return; 1044fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner default: 10453c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner S.Diag(Attr.getLoc(), diag::err_unsupported_machine_mode) << Name; 1046fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner return; 1047fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner case 8: 1048fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner assert(IntegerMode); 1049fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner if (OldTy->isSignedIntegerType()) 10500b2f4da7651feb6edab5e4a657fce058f0dd514aChris Lattner NewTy = S.Context.SignedCharTy; 1051fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner else 10520b2f4da7651feb6edab5e4a657fce058f0dd514aChris Lattner NewTy = S.Context.UnsignedCharTy; 1053fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner break; 1054fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner case 16: 1055fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner assert(IntegerMode); 1056fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner if (OldTy->isSignedIntegerType()) 10570b2f4da7651feb6edab5e4a657fce058f0dd514aChris Lattner NewTy = S.Context.ShortTy; 1058fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner else 10590b2f4da7651feb6edab5e4a657fce058f0dd514aChris Lattner NewTy = S.Context.UnsignedShortTy; 1060fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner break; 1061fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner case 32: 1062fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner if (!IntegerMode) 10630b2f4da7651feb6edab5e4a657fce058f0dd514aChris Lattner NewTy = S.Context.FloatTy; 1064fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner else if (OldTy->isSignedIntegerType()) 10650b2f4da7651feb6edab5e4a657fce058f0dd514aChris Lattner NewTy = S.Context.IntTy; 1066fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner else 10670b2f4da7651feb6edab5e4a657fce058f0dd514aChris Lattner NewTy = S.Context.UnsignedIntTy; 1068fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner break; 1069fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner case 64: 1070fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner if (!IntegerMode) 10710b2f4da7651feb6edab5e4a657fce058f0dd514aChris Lattner NewTy = S.Context.DoubleTy; 1072fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner else if (OldTy->isSignedIntegerType()) 10730b2f4da7651feb6edab5e4a657fce058f0dd514aChris Lattner NewTy = S.Context.LongLongTy; 1074fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner else 10750b2f4da7651feb6edab5e4a657fce058f0dd514aChris Lattner NewTy = S.Context.UnsignedLongLongTy; 1076fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner break; 1077fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner } 1078fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner 1079fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner if (!OldTy->getAsBuiltinType()) 10800b2f4da7651feb6edab5e4a657fce058f0dd514aChris Lattner S.Diag(Attr.getLoc(), diag::err_mode_not_primitive); 1081fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner else if (!(IntegerMode && OldTy->isIntegerType()) && 1082fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner !(!IntegerMode && OldTy->isFloatingType())) { 10830b2f4da7651feb6edab5e4a657fce058f0dd514aChris Lattner S.Diag(Attr.getLoc(), diag::err_mode_wrong_type); 1084fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner } 1085fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner 1086fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner // Install the new type. 1087fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner if (TypedefDecl *TD = dyn_cast<TypedefDecl>(D)) 1088fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner TD->setUnderlyingType(NewTy); 1089fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner else 1090fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner cast<ValueDecl>(D)->setType(NewTy); 1091fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner} 10920744e5f3325e2d2107506002e43c37ea0155a5acChris Lattner 10930744e5f3325e2d2107506002e43c37ea0155a5acChris Lattner//===----------------------------------------------------------------------===// 10940744e5f3325e2d2107506002e43c37ea0155a5acChris Lattner// Top Level Sema Entry Points 10950744e5f3325e2d2107506002e43c37ea0155a5acChris Lattner//===----------------------------------------------------------------------===// 10960744e5f3325e2d2107506002e43c37ea0155a5acChris Lattner 1097803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner/// HandleDeclAttribute - Apply the specific attribute to the specified decl if 1098803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner/// the attribute applies to decls. If the attribute is a type attribute, just 1099803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner/// silently ignore it. 1100803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattnerstatic void ProcessDeclAttribute(Decl *D, const AttributeList &Attr, Sema &S) { 1101803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner switch (Attr.getKind()) { 11023068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar case AttributeList::AT_IBOutlet: HandleIBOutletAttr (D, Attr, S); break; 1103803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner case AttributeList::AT_address_space: 1104803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner // Ignore this, this is a type attribute, handled by ProcessTypeAttributes. 1105803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner break; 1106803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner case AttributeList::AT_alias: HandleAliasAttr (D, Attr, S); break; 11073068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar case AttributeList::AT_aligned: HandleAlignedAttr (D, Attr, S); break; 1108af668b0e7d3581dea3b4f29a9262686e83887e5bDaniel Dunbar case AttributeList::AT_always_inline: 1109af668b0e7d3581dea3b4f29a9262686e83887e5bDaniel Dunbar HandleAlwaysInlineAttr (D, Attr, S); break; 11103068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar case AttributeList::AT_annotate: HandleAnnotateAttr (D, Attr, S); break; 11113068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar case AttributeList::AT_constructor: HandleConstructorAttr(D, Attr, S); break; 1112803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner case AttributeList::AT_deprecated: HandleDeprecatedAttr(D, Attr, S); break; 11133068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar case AttributeList::AT_destructor: HandleDestructorAttr(D, Attr, S); break; 1114803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner case AttributeList::AT_dllexport: HandleDLLExportAttr (D, Attr, S); break; 11153068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar case AttributeList::AT_dllimport: HandleDLLImportAttr (D, Attr, S); break; 11163068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar case AttributeList::AT_ext_vector_type: 11173068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar HandleExtVectorTypeAttr(D, Attr, S); 11183068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar break; 1119803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner case AttributeList::AT_fastcall: HandleFastCallAttr (D, Attr, S); break; 1120803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner case AttributeList::AT_format: HandleFormatAttr (D, Attr, S); break; 11213068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar case AttributeList::AT_mode: HandleModeAttr (D, Attr, S); break; 1122eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek case AttributeList::AT_nonnull: HandleNonNullAttr (D, Attr, S); break; 11233068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar case AttributeList::AT_noreturn: HandleNoReturnAttr (D, Attr, S); break; 11243068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar case AttributeList::AT_nothrow: HandleNothrowAttr (D, Attr, S); break; 11253068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar case AttributeList::AT_packed: HandlePackedAttr (D, Attr, S); break; 11263068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar case AttributeList::AT_stdcall: HandleStdCallAttr (D, Attr, S); break; 112773798892751e378cbcdef43579c1d41685091fd0Ted Kremenek case AttributeList::AT_unused: HandleUnusedAttr (D, Attr, S); break; 11283068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar case AttributeList::AT_vector_size: HandleVectorSizeAttr(D, Attr, S); break; 11293068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar case AttributeList::AT_visibility: HandleVisibilityAttr(D, Attr, S); break; 11303068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar case AttributeList::AT_weak: HandleWeakAttr (D, Attr, S); break; 1131803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner case AttributeList::AT_transparent_union: 1132803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner HandleTransparentUnionAttr(D, Attr, S); 1133803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner break; 1134aa0d25b44e510a5a62e7345f4fa3840a886841d2Anders Carlsson case AttributeList::AT_objc_gc: HandleObjCGCAttr (D, Attr, S); break; 11359eae5761c0691c0f11d7a823b8ee54f05786cbbeSteve Naroff case AttributeList::AT_blocks: HandleBlocksAttr (D, Attr, S); break; 1136770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson case AttributeList::AT_sentinel: HandleSentinelAttr (D, Attr, S); break; 1137232eb7d33b96ad8f99de3b5ae840421b3a7c6cb7Anders Carlsson case AttributeList::AT_const: HandleConstAttr (D, Attr, S); break; 1138232eb7d33b96ad8f99de3b5ae840421b3a7c6cb7Anders Carlsson case AttributeList::AT_pure: HandlePureAttr (D, Attr, S); break; 1139803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner default: 1140803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner#if 0 1141803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner // TODO: when we have the full set of attributes, warn about unknown ones. 1142fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr->getLoc(), diag::warn_attribute_ignored) 1143fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner << Attr->getName()->getName(); 1144803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner#endif 1145803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner break; 1146803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner } 1147803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner} 1148803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner 1149803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner/// ProcessDeclAttributeList - Apply all the decl attributes in the specified 1150803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner/// attribute list to the specified decl, ignoring any type attributes. 1151803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattnervoid Sema::ProcessDeclAttributeList(Decl *D, const AttributeList *AttrList) { 1152803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner while (AttrList) { 1153803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner ProcessDeclAttribute(D, *AttrList, *this); 1154803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner AttrList = AttrList->getNext(); 1155803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner } 1156803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner} 1157803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner 1158803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner 11590744e5f3325e2d2107506002e43c37ea0155a5acChris Lattner/// ProcessDeclAttributes - Given a declarator (PD) with attributes indicated in 11600744e5f3325e2d2107506002e43c37ea0155a5acChris Lattner/// it, apply them to D. This is a bit tricky because PD can have attributes 11610744e5f3325e2d2107506002e43c37ea0155a5acChris Lattner/// specified in many different places, and we need to find and apply them all. 11620744e5f3325e2d2107506002e43c37ea0155a5acChris Lattnervoid Sema::ProcessDeclAttributes(Decl *D, const Declarator &PD) { 11630744e5f3325e2d2107506002e43c37ea0155a5acChris Lattner // Apply decl attributes from the DeclSpec if present. 11640744e5f3325e2d2107506002e43c37ea0155a5acChris Lattner if (const AttributeList *Attrs = PD.getDeclSpec().getAttributes()) 11650744e5f3325e2d2107506002e43c37ea0155a5acChris Lattner ProcessDeclAttributeList(D, Attrs); 1166803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner 11670744e5f3325e2d2107506002e43c37ea0155a5acChris Lattner // Walk the declarator structure, applying decl attributes that were in a type 11680744e5f3325e2d2107506002e43c37ea0155a5acChris Lattner // position to the decl itself. This handles cases like: 11690744e5f3325e2d2107506002e43c37ea0155a5acChris Lattner // int *__attr__(x)** D; 11700744e5f3325e2d2107506002e43c37ea0155a5acChris Lattner // when X is a decl attribute. 11710744e5f3325e2d2107506002e43c37ea0155a5acChris Lattner for (unsigned i = 0, e = PD.getNumTypeObjects(); i != e; ++i) 11720744e5f3325e2d2107506002e43c37ea0155a5acChris Lattner if (const AttributeList *Attrs = PD.getTypeObject(i).getAttrs()) 11730744e5f3325e2d2107506002e43c37ea0155a5acChris Lattner ProcessDeclAttributeList(D, Attrs); 11740744e5f3325e2d2107506002e43c37ea0155a5acChris Lattner 11750744e5f3325e2d2107506002e43c37ea0155a5acChris Lattner // Finally, apply any attributes on the decl itself. 11760744e5f3325e2d2107506002e43c37ea0155a5acChris Lattner if (const AttributeList *Attrs = PD.getAttributes()) 11770744e5f3325e2d2107506002e43c37ea0155a5acChris Lattner ProcessDeclAttributeList(D, Attrs); 11780744e5f3325e2d2107506002e43c37ea0155a5acChris Lattner} 11790744e5f3325e2d2107506002e43c37ea0155a5acChris Lattner 1180