SemaExprObjC.cpp revision d2615cc53b916e8aae45783ca7113b93de515ce3
185a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner//===--- SemaExprObjC.cpp - Semantic Analysis for ObjC Expressions --------===// 285a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner// 385a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner// The LLVM Compiler Infrastructure 485a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner// 585a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner// This file is distributed under the University of Illinois Open Source 685a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner// License. See LICENSE.TXT for details. 785a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner// 885a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner//===----------------------------------------------------------------------===// 985a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner// 1085a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner// This file implements semantic analysis for Objective-C expressions. 1185a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner// 1285a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner//===----------------------------------------------------------------------===// 1385a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner 142d88708cbe4e4ec5e04e4acb6bd7f5be68557379John McCall#include "clang/Sema/SemaInternal.h" 1585a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner#include "clang/AST/ASTContext.h" 1685a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner#include "clang/AST/DeclObjC.h" 17f494b579b22f9950f5af021f0bf9879a91bb8b41Steve Naroff#include "clang/AST/ExprObjC.h" 18f85e193739c953358c865005855253af4f68a497John McCall#include "clang/AST/StmtVisitor.h" 192725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor#include "clang/AST/TypeLoc.h" 2055fc873017f10f6f566b182b70f6fc22aefa3464Chandler Carruth#include "clang/Analysis/DomainSpecific/CocoaConventions.h" 2155fc873017f10f6f566b182b70f6fc22aefa3464Chandler Carruth#include "clang/Edit/Commit.h" 2255fc873017f10f6f566b182b70f6fc22aefa3464Chandler Carruth#include "clang/Edit/Rewriters.h" 2361f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff#include "clang/Lex/Preprocessor.h" 2455fc873017f10f6f566b182b70f6fc22aefa3464Chandler Carruth#include "clang/Sema/Initialization.h" 2555fc873017f10f6f566b182b70f6fc22aefa3464Chandler Carruth#include "clang/Sema/Lookup.h" 2655fc873017f10f6f566b182b70f6fc22aefa3464Chandler Carruth#include "clang/Sema/Scope.h" 2755fc873017f10f6f566b182b70f6fc22aefa3464Chandler Carruth#include "clang/Sema/ScopeInfo.h" 2855fc873017f10f6f566b182b70f6fc22aefa3464Chandler Carruth#include "llvm/ADT/SmallString.h" 2961f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff 3085a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattnerusing namespace clang; 3126743b20e4a8c2a986e6453f0c38beba0afef633John McCallusing namespace sema; 328d9ed7980405e91a12e33338a78fb99620adf553Argyrios Kyrtzidisusing llvm::makeArrayRef; 3385a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner 34f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCallExprResult Sema::ParseObjCStringLiteral(SourceLocation *AtLocs, 35f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall Expr **strings, 36f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall unsigned NumStrings) { 3739c28bbbf235533e9ae7d06fb9b13371dfcc542dChris Lattner StringLiteral **Strings = reinterpret_cast<StringLiteral**>(strings); 3839c28bbbf235533e9ae7d06fb9b13371dfcc542dChris Lattner 39f4b136fb40aeedeaaa6ce7cdff22f375eb76c47bChris Lattner // Most ObjC strings are formed out of a single piece. However, we *can* 40f4b136fb40aeedeaaa6ce7cdff22f375eb76c47bChris Lattner // have strings formed out of multiple @ strings with multiple pptokens in 41f4b136fb40aeedeaaa6ce7cdff22f375eb76c47bChris Lattner // each one, e.g. @"foo" "bar" @"baz" "qux" which need to be turned into one 42f4b136fb40aeedeaaa6ce7cdff22f375eb76c47bChris Lattner // StringLiteral for ObjCStringLiteral to hold onto. 4339c28bbbf235533e9ae7d06fb9b13371dfcc542dChris Lattner StringLiteral *S = Strings[0]; 441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 45f4b136fb40aeedeaaa6ce7cdff22f375eb76c47bChris Lattner // If we have a multi-part string, merge it all together. 46f4b136fb40aeedeaaa6ce7cdff22f375eb76c47bChris Lattner if (NumStrings != 1) { 4785a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner // Concatenate objc strings. 48f7ccbad5d9949e7ddd1cbef43d482553b811e026Dylan Noblesmith SmallString<128> StrBuf; 495f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<SourceLocation, 8> StrLocs; 501eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 51726e168dc09fb23f53c7b004f8e919421ee91806Chris Lattner for (unsigned i = 0; i != NumStrings; ++i) { 5239c28bbbf235533e9ae7d06fb9b13371dfcc542dChris Lattner S = Strings[i]; 531eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 545cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor // ObjC strings can't be wide or UTF. 555cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor if (!S->isAscii()) { 56f4b136fb40aeedeaaa6ce7cdff22f375eb76c47bChris Lattner Diag(S->getLocStart(), diag::err_cfstring_literal_not_string_constant) 57f4b136fb40aeedeaaa6ce7cdff22f375eb76c47bChris Lattner << S->getSourceRange(); 58f4b136fb40aeedeaaa6ce7cdff22f375eb76c47bChris Lattner return true; 59f4b136fb40aeedeaaa6ce7cdff22f375eb76c47bChris Lattner } 601eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 612f4eaef37476ae6891ede8ba215d0f6fd093629bBenjamin Kramer // Append the string. 622f4eaef37476ae6891ede8ba215d0f6fd093629bBenjamin Kramer StrBuf += S->getString(); 631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6439c28bbbf235533e9ae7d06fb9b13371dfcc542dChris Lattner // Get the locations of the string tokens. 6539c28bbbf235533e9ae7d06fb9b13371dfcc542dChris Lattner StrLocs.append(S->tokloc_begin(), S->tokloc_end()); 6685a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner } 671eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6839c28bbbf235533e9ae7d06fb9b13371dfcc542dChris Lattner // Create the aggregate string with the appropriate content and location 6939c28bbbf235533e9ae7d06fb9b13371dfcc542dChris Lattner // information. 7065aa6885818d4b4eea2e5a9d12085b2398148662Jay Foad S = StringLiteral::Create(Context, StrBuf, 715cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor StringLiteral::Ascii, /*Pascal=*/false, 722085fd6cd22ec5c268175251db10d7c60caf7aaaChris Lattner Context.getPointerType(Context.CharTy), 7339c28bbbf235533e9ae7d06fb9b13371dfcc542dChris Lattner &StrLocs[0], StrLocs.size()); 7485a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner } 75ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 76ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return BuildObjCStringLiteral(AtLocs[0], S); 77ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek} 781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 79ebcb57a8d298862c65043e88b2429591ab3c58d3Ted KremenekExprResult Sema::BuildObjCStringLiteral(SourceLocation AtLoc, StringLiteral *S){ 80690398188ea5b428f06aa13c7d4ce6eb741ad4f9Chris Lattner // Verify that this composite string is acceptable for ObjC strings. 81690398188ea5b428f06aa13c7d4ce6eb741ad4f9Chris Lattner if (CheckObjCString(S)) 8285a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner return true; 83a0af1fe67da29343cd182c51cd48d91b740ecef2Chris Lattner 84a0af1fe67da29343cd182c51cd48d91b740ecef2Chris Lattner // Initialize the constant string interface lazily. This assumes 85d9fd7647e286723d100db4cfeab31ec022eec629Steve Naroff // the NSString interface is seen in this translation unit. Note: We 86d9fd7647e286723d100db4cfeab31ec022eec629Steve Naroff // don't use NSConstantString, since the runtime team considers this 87d9fd7647e286723d100db4cfeab31ec022eec629Steve Naroff // interface private (even though it appears in the header files). 88a0af1fe67da29343cd182c51cd48d91b740ecef2Chris Lattner QualType Ty = Context.getObjCConstantStringInterface(); 89a0af1fe67da29343cd182c51cd48d91b740ecef2Chris Lattner if (!Ty.isNull()) { 9014108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff Ty = Context.getObjCObjectPointerType(Ty); 914e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie } else if (getLangOpts().NoConstantCFStrings) { 924c73307c74764ba99e1379677fe92af72f676531Fariborz Jahanian IdentifierInfo *NSIdent=0; 934e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie std::string StringClass(getLangOpts().ObjCConstantStringClass); 944c73307c74764ba99e1379677fe92af72f676531Fariborz Jahanian 954c73307c74764ba99e1379677fe92af72f676531Fariborz Jahanian if (StringClass.empty()) 964c73307c74764ba99e1379677fe92af72f676531Fariborz Jahanian NSIdent = &Context.Idents.get("NSConstantString"); 974c73307c74764ba99e1379677fe92af72f676531Fariborz Jahanian else 984c73307c74764ba99e1379677fe92af72f676531Fariborz Jahanian NSIdent = &Context.Idents.get(StringClass); 994c73307c74764ba99e1379677fe92af72f676531Fariborz Jahanian 100ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek NamedDecl *IF = LookupSingleName(TUScope, NSIdent, AtLoc, 1018a4377697161c5087e27cc40d6e0682f0cd1fa20Fariborz Jahanian LookupOrdinaryName); 1028a4377697161c5087e27cc40d6e0682f0cd1fa20Fariborz Jahanian if (ObjCInterfaceDecl *StrIF = dyn_cast_or_null<ObjCInterfaceDecl>(IF)) { 1038a4377697161c5087e27cc40d6e0682f0cd1fa20Fariborz Jahanian Context.setObjCConstantStringInterface(StrIF); 1048a4377697161c5087e27cc40d6e0682f0cd1fa20Fariborz Jahanian Ty = Context.getObjCConstantStringInterface(); 1058a4377697161c5087e27cc40d6e0682f0cd1fa20Fariborz Jahanian Ty = Context.getObjCObjectPointerType(Ty); 1068a4377697161c5087e27cc40d6e0682f0cd1fa20Fariborz Jahanian } else { 1078a4377697161c5087e27cc40d6e0682f0cd1fa20Fariborz Jahanian // If there is no NSConstantString interface defined then treat this 1088a4377697161c5087e27cc40d6e0682f0cd1fa20Fariborz Jahanian // as error and recover from it. 1098a4377697161c5087e27cc40d6e0682f0cd1fa20Fariborz Jahanian Diag(S->getLocStart(), diag::err_no_nsconstant_string_class) << NSIdent 1108a4377697161c5087e27cc40d6e0682f0cd1fa20Fariborz Jahanian << S->getSourceRange(); 1118a4377697161c5087e27cc40d6e0682f0cd1fa20Fariborz Jahanian Ty = Context.getObjCIdType(); 1128a4377697161c5087e27cc40d6e0682f0cd1fa20Fariborz Jahanian } 11313fd7e5111032f54b538dd66d035b0ccc1f82467Chris Lattner } else { 114eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard IdentifierInfo *NSIdent = NSAPIObj->getNSClassId(NSAPI::ClassId_NSString); 115ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek NamedDecl *IF = LookupSingleName(TUScope, NSIdent, AtLoc, 116c83c6874e3bf1432d3df5e8d3530f8561ff5441fDouglas Gregor LookupOrdinaryName); 117a0af1fe67da29343cd182c51cd48d91b740ecef2Chris Lattner if (ObjCInterfaceDecl *StrIF = dyn_cast_or_null<ObjCInterfaceDecl>(IF)) { 118a0af1fe67da29343cd182c51cd48d91b740ecef2Chris Lattner Context.setObjCConstantStringInterface(StrIF); 119a0af1fe67da29343cd182c51cd48d91b740ecef2Chris Lattner Ty = Context.getObjCConstantStringInterface(); 12014108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff Ty = Context.getObjCObjectPointerType(Ty); 121a0af1fe67da29343cd182c51cd48d91b740ecef2Chris Lattner } else { 122f64bc202a2bcdf7b10f418ad52aaa7366c8ffef9Fariborz Jahanian // If there is no NSString interface defined, implicitly declare 123f64bc202a2bcdf7b10f418ad52aaa7366c8ffef9Fariborz Jahanian // a @class NSString; and use that instead. This is to make sure 124f64bc202a2bcdf7b10f418ad52aaa7366c8ffef9Fariborz Jahanian // type of an NSString literal is represented correctly, instead of 125f64bc202a2bcdf7b10f418ad52aaa7366c8ffef9Fariborz Jahanian // being an 'id' type. 126f64bc202a2bcdf7b10f418ad52aaa7366c8ffef9Fariborz Jahanian Ty = Context.getObjCNSStringType(); 127f64bc202a2bcdf7b10f418ad52aaa7366c8ffef9Fariborz Jahanian if (Ty.isNull()) { 128f64bc202a2bcdf7b10f418ad52aaa7366c8ffef9Fariborz Jahanian ObjCInterfaceDecl *NSStringIDecl = 129f64bc202a2bcdf7b10f418ad52aaa7366c8ffef9Fariborz Jahanian ObjCInterfaceDecl::Create (Context, 130f64bc202a2bcdf7b10f418ad52aaa7366c8ffef9Fariborz Jahanian Context.getTranslationUnitDecl(), 131f64bc202a2bcdf7b10f418ad52aaa7366c8ffef9Fariborz Jahanian SourceLocation(), NSIdent, 132f64bc202a2bcdf7b10f418ad52aaa7366c8ffef9Fariborz Jahanian 0, SourceLocation()); 133f64bc202a2bcdf7b10f418ad52aaa7366c8ffef9Fariborz Jahanian Ty = Context.getObjCInterfaceType(NSStringIDecl); 134f64bc202a2bcdf7b10f418ad52aaa7366c8ffef9Fariborz Jahanian Context.setObjCNSStringType(Ty); 135f64bc202a2bcdf7b10f418ad52aaa7366c8ffef9Fariborz Jahanian } 136f64bc202a2bcdf7b10f418ad52aaa7366c8ffef9Fariborz Jahanian Ty = Context.getObjCObjectPointerType(Ty); 137a0af1fe67da29343cd182c51cd48d91b740ecef2Chris Lattner } 13813fd7e5111032f54b538dd66d035b0ccc1f82467Chris Lattner } 1391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 140ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return new (Context) ObjCStringLiteral(S, Ty, AtLoc); 141ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek} 142ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 143c8521fae12432f0dcf174988832c1db88a6b6449Jordy Rose/// \brief Emits an error if the given method does not exist, or if the return 144c8521fae12432f0dcf174988832c1db88a6b6449Jordy Rose/// type is not an Objective-C object. 145c8521fae12432f0dcf174988832c1db88a6b6449Jordy Rosestatic bool validateBoxingMethod(Sema &S, SourceLocation Loc, 146c8521fae12432f0dcf174988832c1db88a6b6449Jordy Rose const ObjCInterfaceDecl *Class, 147c8521fae12432f0dcf174988832c1db88a6b6449Jordy Rose Selector Sel, const ObjCMethodDecl *Method) { 148c8521fae12432f0dcf174988832c1db88a6b6449Jordy Rose if (!Method) { 149c8521fae12432f0dcf174988832c1db88a6b6449Jordy Rose // FIXME: Is there a better way to avoid quotes than using getName()? 150c8521fae12432f0dcf174988832c1db88a6b6449Jordy Rose S.Diag(Loc, diag::err_undeclared_boxing_method) << Sel << Class->getName(); 151c8521fae12432f0dcf174988832c1db88a6b6449Jordy Rose return false; 152c8521fae12432f0dcf174988832c1db88a6b6449Jordy Rose } 153c8521fae12432f0dcf174988832c1db88a6b6449Jordy Rose 154c8521fae12432f0dcf174988832c1db88a6b6449Jordy Rose // Make sure the return type is reasonable. 155c8521fae12432f0dcf174988832c1db88a6b6449Jordy Rose QualType ReturnType = Method->getResultType(); 156c8521fae12432f0dcf174988832c1db88a6b6449Jordy Rose if (!ReturnType->isObjCObjectPointerType()) { 157c8521fae12432f0dcf174988832c1db88a6b6449Jordy Rose S.Diag(Loc, diag::err_objc_literal_method_sig) 158c8521fae12432f0dcf174988832c1db88a6b6449Jordy Rose << Sel; 159c8521fae12432f0dcf174988832c1db88a6b6449Jordy Rose S.Diag(Method->getLocation(), diag::note_objc_literal_method_return) 160c8521fae12432f0dcf174988832c1db88a6b6449Jordy Rose << ReturnType; 161c8521fae12432f0dcf174988832c1db88a6b6449Jordy Rose return false; 162c8521fae12432f0dcf174988832c1db88a6b6449Jordy Rose } 163c8521fae12432f0dcf174988832c1db88a6b6449Jordy Rose 164c8521fae12432f0dcf174988832c1db88a6b6449Jordy Rose return true; 165c8521fae12432f0dcf174988832c1db88a6b6449Jordy Rose} 166c8521fae12432f0dcf174988832c1db88a6b6449Jordy Rose 167ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek/// \brief Retrieve the NSNumber factory method that should be used to create 168ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek/// an Objective-C literal for the given type. 169ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenekstatic ObjCMethodDecl *getNSNumberFactoryMethod(Sema &S, SourceLocation Loc, 170eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard QualType NumberType, 171eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard bool isLiteral = false, 172eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard SourceRange R = SourceRange()) { 173dc84cd5efdd3430efb22546b4ac656aa0540b210David Blaikie Optional<NSAPI::NSNumberLiteralMethodKind> Kind = 174dc84cd5efdd3430efb22546b4ac656aa0540b210David Blaikie S.NSAPIObj->getNSNumberFactoryMethodKind(NumberType); 175dc84cd5efdd3430efb22546b4ac656aa0540b210David Blaikie 176ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (!Kind) { 177eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard if (isLiteral) { 178eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard S.Diag(Loc, diag::err_invalid_nsnumber_type) 179eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard << NumberType << R; 180eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard } 181ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return 0; 182ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 183eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard 184ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // If we already looked up this method, we're done. 185ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (S.NSNumberLiteralMethods[*Kind]) 186ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return S.NSNumberLiteralMethods[*Kind]; 187ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 188ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Selector Sel = S.NSAPIObj->getNSNumberLiteralSelector(*Kind, 189ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek /*Instance=*/false); 190ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 191eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard ASTContext &CX = S.Context; 192eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard 193eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard // Look up the NSNumber class, if we haven't done so already. It's cached 194eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard // in the Sema instance. 195eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard if (!S.NSNumberDecl) { 196d2d065545ba7b4349ae02afe07f799047443f1a0Jordy Rose IdentifierInfo *NSNumberId = 197d2d065545ba7b4349ae02afe07f799047443f1a0Jordy Rose S.NSAPIObj->getNSClassId(NSAPI::ClassId_NSNumber); 198eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard NamedDecl *IF = S.LookupSingleName(S.TUScope, NSNumberId, 199eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard Loc, Sema::LookupOrdinaryName); 200eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard S.NSNumberDecl = dyn_cast_or_null<ObjCInterfaceDecl>(IF); 201eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard if (!S.NSNumberDecl) { 202eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard if (S.getLangOpts().DebuggerObjCLiteral) { 203eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard // Create a stub definition of NSNumber. 204d2d065545ba7b4349ae02afe07f799047443f1a0Jordy Rose S.NSNumberDecl = ObjCInterfaceDecl::Create(CX, 205d2d065545ba7b4349ae02afe07f799047443f1a0Jordy Rose CX.getTranslationUnitDecl(), 206d2d065545ba7b4349ae02afe07f799047443f1a0Jordy Rose SourceLocation(), NSNumberId, 207d2d065545ba7b4349ae02afe07f799047443f1a0Jordy Rose 0, SourceLocation()); 208eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard } else { 209eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard // Otherwise, require a declaration of NSNumber. 210eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard S.Diag(Loc, diag::err_undeclared_nsnumber); 211eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard return 0; 212eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard } 213eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard } else if (!S.NSNumberDecl->hasDefinition()) { 214eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard S.Diag(Loc, diag::err_undeclared_nsnumber); 215eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard return 0; 216eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard } 217eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard 218eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard // generate the pointer to NSNumber type. 219d2d065545ba7b4349ae02afe07f799047443f1a0Jordy Rose QualType NSNumberObject = CX.getObjCInterfaceType(S.NSNumberDecl); 220d2d065545ba7b4349ae02afe07f799047443f1a0Jordy Rose S.NSNumberPointer = CX.getObjCObjectPointerType(NSNumberObject); 221eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard } 222eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard 223ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // Look for the appropriate method within NSNumber. 224d2d065545ba7b4349ae02afe07f799047443f1a0Jordy Rose ObjCMethodDecl *Method = S.NSNumberDecl->lookupClassMethod(Sel); 2254e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!Method && S.getLangOpts().DebuggerObjCLiteral) { 226eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard // create a stub definition this NSNumber factory method. 227ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek TypeSourceInfo *ResultTInfo = 0; 228eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard Method = ObjCMethodDecl::Create(CX, SourceLocation(), SourceLocation(), Sel, 229d2d065545ba7b4349ae02afe07f799047443f1a0Jordy Rose S.NSNumberPointer, ResultTInfo, 230d2d065545ba7b4349ae02afe07f799047443f1a0Jordy Rose S.NSNumberDecl, 231eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard /*isInstance=*/false, /*isVariadic=*/false, 2321e4691b9d8e1bdcc8ef62b323969d702c51b3c08Jordan Rose /*isPropertyAccessor=*/false, 233eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard /*isImplicitlyDeclared=*/true, 234d2d065545ba7b4349ae02afe07f799047443f1a0Jordy Rose /*isDefined=*/false, 235d2d065545ba7b4349ae02afe07f799047443f1a0Jordy Rose ObjCMethodDecl::Required, 236eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard /*HasRelatedResultType=*/false); 237ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ParmVarDecl *value = ParmVarDecl::Create(S.Context, Method, 238ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek SourceLocation(), SourceLocation(), 239eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard &CX.Idents.get("value"), 240d2d065545ba7b4349ae02afe07f799047443f1a0Jordy Rose NumberType, /*TInfo=*/0, SC_None, 241d2615cc53b916e8aae45783ca7113b93de515ce3Rafael Espindola 0); 242ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Method->setMethodParams(S.Context, value, ArrayRef<SourceLocation>()); 243ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 244ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 245c8521fae12432f0dcf174988832c1db88a6b6449Jordy Rose if (!validateBoxingMethod(S, Loc, S.NSNumberDecl, Sel, Method)) 246ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return 0; 247ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 248ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // Note: if the parameter type is out-of-line, we'll catch it later in the 249ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // implicit conversion. 250ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 251ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek S.NSNumberLiteralMethods[*Kind] = Method; 252ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return Method; 253ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek} 254ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 255eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard/// BuildObjCNumericLiteral - builds an ObjCBoxedExpr AST node for the 256eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard/// numeric literal expression. Type of the expression will be "NSNumber *". 257ebcb57a8d298862c65043e88b2429591ab3c58d3Ted KremenekExprResult Sema::BuildObjCNumericLiteral(SourceLocation AtLoc, Expr *Number) { 258ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // Determine the type of the literal. 259ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek QualType NumberType = Number->getType(); 260ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (CharacterLiteral *Char = dyn_cast<CharacterLiteral>(Number)) { 261ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // In C, character literals have type 'int'. That's not the type we want 262ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // to use to determine the Objective-c literal kind. 263ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek switch (Char->getKind()) { 264ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek case CharacterLiteral::Ascii: 265ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek NumberType = Context.CharTy; 266ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek break; 267ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 268ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek case CharacterLiteral::Wide: 269ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek NumberType = Context.getWCharType(); 270ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek break; 271ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 272ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek case CharacterLiteral::UTF16: 273ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek NumberType = Context.Char16Ty; 274ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek break; 275ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 276ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek case CharacterLiteral::UTF32: 277ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek NumberType = Context.Char32Ty; 278ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek break; 279ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 280ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 281ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 282ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // Look for the appropriate method within NSNumber. 283ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // Construct the literal. 284e0fdadfd5103fa5f824920e813216615807c74baPatrick Beard SourceRange NR(Number->getSourceRange()); 285eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard ObjCMethodDecl *Method = getNSNumberFactoryMethod(*this, AtLoc, NumberType, 286e0fdadfd5103fa5f824920e813216615807c74baPatrick Beard true, NR); 287ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (!Method) 288ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return ExprError(); 289ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 290ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // Convert the number to the type that the parameter expects. 291e0fdadfd5103fa5f824920e813216615807c74baPatrick Beard ParmVarDecl *ParamDecl = Method->param_begin()[0]; 292e0fdadfd5103fa5f824920e813216615807c74baPatrick Beard InitializedEntity Entity = InitializedEntity::InitializeParameter(Context, 293e0fdadfd5103fa5f824920e813216615807c74baPatrick Beard ParamDecl); 294e0fdadfd5103fa5f824920e813216615807c74baPatrick Beard ExprResult ConvertedNumber = PerformCopyInitialization(Entity, 295e0fdadfd5103fa5f824920e813216615807c74baPatrick Beard SourceLocation(), 296e0fdadfd5103fa5f824920e813216615807c74baPatrick Beard Owned(Number)); 297ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (ConvertedNumber.isInvalid()) 298ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return ExprError(); 299ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Number = ConvertedNumber.get(); 300ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 301e0fdadfd5103fa5f824920e813216615807c74baPatrick Beard // Use the effective source range of the literal, including the leading '@'. 302ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return MaybeBindToTemporary( 303e0fdadfd5103fa5f824920e813216615807c74baPatrick Beard new (Context) ObjCBoxedExpr(Number, NSNumberPointer, Method, 304e0fdadfd5103fa5f824920e813216615807c74baPatrick Beard SourceRange(AtLoc, NR.getEnd()))); 305ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek} 306ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 307ebcb57a8d298862c65043e88b2429591ab3c58d3Ted KremenekExprResult Sema::ActOnObjCBoolLiteral(SourceLocation AtLoc, 308ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek SourceLocation ValueLoc, 309ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek bool Value) { 310ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ExprResult Inner; 3114e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (getLangOpts().CPlusPlus) { 312ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Inner = ActOnCXXBoolLiteral(ValueLoc, Value? tok::kw_true : tok::kw_false); 313ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } else { 314ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // C doesn't actually have a way to represent literal values of type 315ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // _Bool. So, we'll use 0/1 and implicit cast to _Bool. 316ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Inner = ActOnIntegerConstant(ValueLoc, Value? 1 : 0); 317ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Inner = ImpCastExprToType(Inner.get(), Context.BoolTy, 318ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek CK_IntegralToBoolean); 319ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 320ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 321ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return BuildObjCNumericLiteral(AtLoc, Inner.get()); 322ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek} 323ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 324ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek/// \brief Check that the given expression is a valid element of an Objective-C 325ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek/// collection literal. 326ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenekstatic ExprResult CheckObjCCollectionLiteralElement(Sema &S, Expr *Element, 327ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek QualType T) { 328ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // If the expression is type-dependent, there's nothing for us to do. 329ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (Element->isTypeDependent()) 330ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return Element; 331ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 332ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ExprResult Result = S.CheckPlaceholderExpr(Element); 333ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (Result.isInvalid()) 334ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return ExprError(); 335ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Element = Result.get(); 336ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 337ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // In C++, check for an implicit conversion to an Objective-C object pointer 338ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // type. 3394e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (S.getLangOpts().CPlusPlus && Element->getType()->isRecordType()) { 340ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek InitializedEntity Entity 341d2d065545ba7b4349ae02afe07f799047443f1a0Jordy Rose = InitializedEntity::InitializeParameter(S.Context, T, 342d2d065545ba7b4349ae02afe07f799047443f1a0Jordy Rose /*Consumed=*/false); 343ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek InitializationKind Kind 344d2d065545ba7b4349ae02afe07f799047443f1a0Jordy Rose = InitializationKind::CreateCopy(Element->getLocStart(), 345d2d065545ba7b4349ae02afe07f799047443f1a0Jordy Rose SourceLocation()); 346ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek InitializationSequence Seq(S, Entity, Kind, &Element, 1); 347ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (!Seq.Failed()) 3485354e77e60e82828c7c2361f5c688c2667ab59ccBenjamin Kramer return Seq.Perform(S, Entity, Kind, Element); 349ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 350ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 351ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Expr *OrigElement = Element; 352ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 353ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // Perform lvalue-to-rvalue conversion. 354ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Result = S.DefaultLvalueConversion(Element); 355ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (Result.isInvalid()) 356ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return ExprError(); 357ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Element = Result.get(); 358ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 359ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // Make sure that we have an Objective-C pointer type or block. 360ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (!Element->getType()->isObjCObjectPointerType() && 361ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek !Element->getType()->isBlockPointerType()) { 362ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek bool Recovered = false; 363ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 364ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // If this is potentially an Objective-C numeric literal, add the '@'. 365ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (isa<IntegerLiteral>(OrigElement) || 366ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek isa<CharacterLiteral>(OrigElement) || 367ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek isa<FloatingLiteral>(OrigElement) || 368ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek isa<ObjCBoolLiteralExpr>(OrigElement) || 369ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek isa<CXXBoolLiteralExpr>(OrigElement)) { 370ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (S.NSAPIObj->getNSNumberFactoryMethodKind(OrigElement->getType())) { 371ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek int Which = isa<CharacterLiteral>(OrigElement) ? 1 372ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek : (isa<CXXBoolLiteralExpr>(OrigElement) || 373ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek isa<ObjCBoolLiteralExpr>(OrigElement)) ? 2 374ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek : 3; 375ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 376ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek S.Diag(OrigElement->getLocStart(), diag::err_box_literal_collection) 377ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek << Which << OrigElement->getSourceRange() 378ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek << FixItHint::CreateInsertion(OrigElement->getLocStart(), "@"); 379ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 380ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Result = S.BuildObjCNumericLiteral(OrigElement->getLocStart(), 381ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek OrigElement); 382ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (Result.isInvalid()) 383ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return ExprError(); 384ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 385ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Element = Result.get(); 386ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Recovered = true; 387ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 388ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 389ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // If this is potentially an Objective-C string literal, add the '@'. 390ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek else if (StringLiteral *String = dyn_cast<StringLiteral>(OrigElement)) { 391ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (String->isAscii()) { 392ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek S.Diag(OrigElement->getLocStart(), diag::err_box_literal_collection) 393ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek << 0 << OrigElement->getSourceRange() 394ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek << FixItHint::CreateInsertion(OrigElement->getLocStart(), "@"); 395ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 396ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Result = S.BuildObjCStringLiteral(OrigElement->getLocStart(), String); 397ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (Result.isInvalid()) 398ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return ExprError(); 399ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 400ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Element = Result.get(); 401ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Recovered = true; 402ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 403ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 404ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 405ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (!Recovered) { 406ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek S.Diag(Element->getLocStart(), diag::err_invalid_collection_element) 407ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek << Element->getType(); 408ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return ExprError(); 409ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 410ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 411ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 412ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // Make sure that the element has the type that the container factory 413ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // function expects. 414ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return S.PerformCopyInitialization( 415ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek InitializedEntity::InitializeParameter(S.Context, T, 416ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek /*Consumed=*/false), 417ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Element->getLocStart(), Element); 418ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek} 419ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 420eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick BeardExprResult Sema::BuildObjCBoxedExpr(SourceRange SR, Expr *ValueExpr) { 421eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard if (ValueExpr->isTypeDependent()) { 422eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard ObjCBoxedExpr *BoxedExpr = 423eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard new (Context) ObjCBoxedExpr(ValueExpr, Context.DependentTy, NULL, SR); 424eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard return Owned(BoxedExpr); 425eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard } 426eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard ObjCMethodDecl *BoxingMethod = NULL; 427eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard QualType BoxedType; 428eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard // Convert the expression to an RValue, so we can check for pointer types... 429eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard ExprResult RValue = DefaultFunctionArrayLvalueConversion(ValueExpr); 430eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard if (RValue.isInvalid()) { 431eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard return ExprError(); 432eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard } 433eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard ValueExpr = RValue.get(); 434e0fdadfd5103fa5f824920e813216615807c74baPatrick Beard QualType ValueType(ValueExpr->getType()); 435eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard if (const PointerType *PT = ValueType->getAs<PointerType>()) { 436eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard QualType PointeeType = PT->getPointeeType(); 437eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard if (Context.hasSameUnqualifiedType(PointeeType, Context.CharTy)) { 438eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard 439eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard if (!NSStringDecl) { 440eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard IdentifierInfo *NSStringId = 441eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard NSAPIObj->getNSClassId(NSAPI::ClassId_NSString); 442eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard NamedDecl *Decl = LookupSingleName(TUScope, NSStringId, 443eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard SR.getBegin(), LookupOrdinaryName); 444eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard NSStringDecl = dyn_cast_or_null<ObjCInterfaceDecl>(Decl); 445eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard if (!NSStringDecl) { 446eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard if (getLangOpts().DebuggerObjCLiteral) { 447eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard // Support boxed expressions in the debugger w/o NSString declaration. 448d2d065545ba7b4349ae02afe07f799047443f1a0Jordy Rose DeclContext *TU = Context.getTranslationUnitDecl(); 449d2d065545ba7b4349ae02afe07f799047443f1a0Jordy Rose NSStringDecl = ObjCInterfaceDecl::Create(Context, TU, 450d2d065545ba7b4349ae02afe07f799047443f1a0Jordy Rose SourceLocation(), 451d2d065545ba7b4349ae02afe07f799047443f1a0Jordy Rose NSStringId, 452eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard 0, SourceLocation()); 453eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard } else { 454eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard Diag(SR.getBegin(), diag::err_undeclared_nsstring); 455eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard return ExprError(); 456eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard } 457eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard } else if (!NSStringDecl->hasDefinition()) { 458eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard Diag(SR.getBegin(), diag::err_undeclared_nsstring); 459eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard return ExprError(); 460eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard } 461eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard assert(NSStringDecl && "NSStringDecl should not be NULL"); 462d2d065545ba7b4349ae02afe07f799047443f1a0Jordy Rose QualType NSStringObject = Context.getObjCInterfaceType(NSStringDecl); 463d2d065545ba7b4349ae02afe07f799047443f1a0Jordy Rose NSStringPointer = Context.getObjCObjectPointerType(NSStringObject); 464eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard } 465eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard 466eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard if (!StringWithUTF8StringMethod) { 467eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard IdentifierInfo *II = &Context.Idents.get("stringWithUTF8String"); 468eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard Selector stringWithUTF8String = Context.Selectors.getUnarySelector(II); 469eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard 470eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard // Look for the appropriate method within NSString. 471c8521fae12432f0dcf174988832c1db88a6b6449Jordy Rose BoxingMethod = NSStringDecl->lookupClassMethod(stringWithUTF8String); 472c8521fae12432f0dcf174988832c1db88a6b6449Jordy Rose if (!BoxingMethod && getLangOpts().DebuggerObjCLiteral) { 473eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard // Debugger needs to work even if NSString hasn't been defined. 474eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard TypeSourceInfo *ResultTInfo = 0; 475eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard ObjCMethodDecl *M = 476eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard ObjCMethodDecl::Create(Context, SourceLocation(), SourceLocation(), 477eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard stringWithUTF8String, NSStringPointer, 478eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard ResultTInfo, NSStringDecl, 479eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard /*isInstance=*/false, /*isVariadic=*/false, 4801e4691b9d8e1bdcc8ef62b323969d702c51b3c08Jordan Rose /*isPropertyAccessor=*/false, 481eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard /*isImplicitlyDeclared=*/true, 482eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard /*isDefined=*/false, 483eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard ObjCMethodDecl::Required, 484eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard /*HasRelatedResultType=*/false); 485d2d065545ba7b4349ae02afe07f799047443f1a0Jordy Rose QualType ConstCharType = Context.CharTy.withConst(); 486eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard ParmVarDecl *value = 487eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard ParmVarDecl::Create(Context, M, 488eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard SourceLocation(), SourceLocation(), 489eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard &Context.Idents.get("value"), 490d2d065545ba7b4349ae02afe07f799047443f1a0Jordy Rose Context.getPointerType(ConstCharType), 491eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard /*TInfo=*/0, 492d2615cc53b916e8aae45783ca7113b93de515ce3Rafael Espindola SC_None, 0); 493eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard M->setMethodParams(Context, value, ArrayRef<SourceLocation>()); 494c8521fae12432f0dcf174988832c1db88a6b6449Jordy Rose BoxingMethod = M; 495eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard } 49699446d934c85e8b705cc6b8624e65b8eb8c22985Jordy Rose 497c8521fae12432f0dcf174988832c1db88a6b6449Jordy Rose if (!validateBoxingMethod(*this, SR.getBegin(), NSStringDecl, 498c8521fae12432f0dcf174988832c1db88a6b6449Jordy Rose stringWithUTF8String, BoxingMethod)) 499c8521fae12432f0dcf174988832c1db88a6b6449Jordy Rose return ExprError(); 500c8521fae12432f0dcf174988832c1db88a6b6449Jordy Rose 501c8521fae12432f0dcf174988832c1db88a6b6449Jordy Rose StringWithUTF8StringMethod = BoxingMethod; 502eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard } 503eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard 504eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard BoxingMethod = StringWithUTF8StringMethod; 505eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard BoxedType = NSStringPointer; 506eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard } 507e0fdadfd5103fa5f824920e813216615807c74baPatrick Beard } else if (ValueType->isBuiltinType()) { 508eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard // The other types we support are numeric, char and BOOL/bool. We could also 509eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard // provide limited support for structure types, such as NSRange, NSRect, and 510eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard // NSSize. See NSValue (NSValueGeometryExtensions) in <Foundation/NSGeometry.h> 511eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard // for more details. 512eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard 513eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard // Check for a top-level character literal. 514eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard if (const CharacterLiteral *Char = 515eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard dyn_cast<CharacterLiteral>(ValueExpr->IgnoreParens())) { 516eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard // In C, character literals have type 'int'. That's not the type we want 517eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard // to use to determine the Objective-c literal kind. 518eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard switch (Char->getKind()) { 519eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard case CharacterLiteral::Ascii: 520eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard ValueType = Context.CharTy; 521eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard break; 522eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard 523eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard case CharacterLiteral::Wide: 524eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard ValueType = Context.getWCharType(); 525eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard break; 526eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard 527eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard case CharacterLiteral::UTF16: 528eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard ValueType = Context.Char16Ty; 529eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard break; 530eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard 531eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard case CharacterLiteral::UTF32: 532eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard ValueType = Context.Char32Ty; 533eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard break; 534eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard } 535eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard } 536eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard 537eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard // FIXME: Do I need to do anything special with BoolTy expressions? 538eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard 539eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard // Look for the appropriate method within NSNumber. 540eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard BoxingMethod = getNSNumberFactoryMethod(*this, SR.getBegin(), ValueType); 541eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard BoxedType = NSNumberPointer; 542f5343ff93a9549c49469dee366733e1e31ab836eArgyrios Kyrtzidis 543f5343ff93a9549c49469dee366733e1e31ab836eArgyrios Kyrtzidis } else if (const EnumType *ET = ValueType->getAs<EnumType>()) { 544f5343ff93a9549c49469dee366733e1e31ab836eArgyrios Kyrtzidis if (!ET->getDecl()->isComplete()) { 545f5343ff93a9549c49469dee366733e1e31ab836eArgyrios Kyrtzidis Diag(SR.getBegin(), diag::err_objc_incomplete_boxed_expression_type) 546f5343ff93a9549c49469dee366733e1e31ab836eArgyrios Kyrtzidis << ValueType << ValueExpr->getSourceRange(); 547f5343ff93a9549c49469dee366733e1e31ab836eArgyrios Kyrtzidis return ExprError(); 548f5343ff93a9549c49469dee366733e1e31ab836eArgyrios Kyrtzidis } 549f5343ff93a9549c49469dee366733e1e31ab836eArgyrios Kyrtzidis 550f5343ff93a9549c49469dee366733e1e31ab836eArgyrios Kyrtzidis BoxingMethod = getNSNumberFactoryMethod(*this, SR.getBegin(), 551f5343ff93a9549c49469dee366733e1e31ab836eArgyrios Kyrtzidis ET->getDecl()->getIntegerType()); 552f5343ff93a9549c49469dee366733e1e31ab836eArgyrios Kyrtzidis BoxedType = NSNumberPointer; 553eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard } 554eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard 555eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard if (!BoxingMethod) { 556eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard Diag(SR.getBegin(), diag::err_objc_illegal_boxed_expression_type) 557eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard << ValueType << ValueExpr->getSourceRange(); 558eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard return ExprError(); 559eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard } 560eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard 561eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard // Convert the expression to the type that the parameter requires. 562e0fdadfd5103fa5f824920e813216615807c74baPatrick Beard ParmVarDecl *ParamDecl = BoxingMethod->param_begin()[0]; 563e0fdadfd5103fa5f824920e813216615807c74baPatrick Beard InitializedEntity Entity = InitializedEntity::InitializeParameter(Context, 564e0fdadfd5103fa5f824920e813216615807c74baPatrick Beard ParamDecl); 565e0fdadfd5103fa5f824920e813216615807c74baPatrick Beard ExprResult ConvertedValueExpr = PerformCopyInitialization(Entity, 566e0fdadfd5103fa5f824920e813216615807c74baPatrick Beard SourceLocation(), 567e0fdadfd5103fa5f824920e813216615807c74baPatrick Beard Owned(ValueExpr)); 568eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard if (ConvertedValueExpr.isInvalid()) 569eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard return ExprError(); 570eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard ValueExpr = ConvertedValueExpr.get(); 571eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard 572eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard ObjCBoxedExpr *BoxedExpr = 573eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard new (Context) ObjCBoxedExpr(ValueExpr, BoxedType, 574eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard BoxingMethod, SR); 575eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard return MaybeBindToTemporary(BoxedExpr); 576eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard} 577eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard 5781503f0ddab0057e33efa21393fc0577580d6287aJohn McCall/// Build an ObjC subscript pseudo-object expression, given that 5791503f0ddab0057e33efa21393fc0577580d6287aJohn McCall/// that's supported by the runtime. 580ebcb57a8d298862c65043e88b2429591ab3c58d3Ted KremenekExprResult Sema::BuildObjCSubscriptExpression(SourceLocation RB, Expr *BaseExpr, 581ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Expr *IndexExpr, 582ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ObjCMethodDecl *getterMethod, 583ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ObjCMethodDecl *setterMethod) { 5841503f0ddab0057e33efa21393fc0577580d6287aJohn McCall assert(!LangOpts.ObjCRuntime.isSubscriptPointerArithmetic()); 585260611a32535c851237926bfcf78869b13c07d5bJohn McCall 5861503f0ddab0057e33efa21393fc0577580d6287aJohn McCall // We can't get dependent types here; our callers should have 5871503f0ddab0057e33efa21393fc0577580d6287aJohn McCall // filtered them out. 5881503f0ddab0057e33efa21393fc0577580d6287aJohn McCall assert((!BaseExpr->isTypeDependent() && !IndexExpr->isTypeDependent()) && 5891503f0ddab0057e33efa21393fc0577580d6287aJohn McCall "base or index cannot have dependent type here"); 5901503f0ddab0057e33efa21393fc0577580d6287aJohn McCall 5911503f0ddab0057e33efa21393fc0577580d6287aJohn McCall // Filter out placeholders in the index. In theory, overloads could 5921503f0ddab0057e33efa21393fc0577580d6287aJohn McCall // be preserved here, although that might not actually work correctly. 593ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ExprResult Result = CheckPlaceholderExpr(IndexExpr); 594ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (Result.isInvalid()) 595ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return ExprError(); 596ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek IndexExpr = Result.get(); 597ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 5981503f0ddab0057e33efa21393fc0577580d6287aJohn McCall // Perform lvalue-to-rvalue conversion on the base. 599ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Result = DefaultLvalueConversion(BaseExpr); 600ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (Result.isInvalid()) 601ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return ExprError(); 602ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek BaseExpr = Result.get(); 6031503f0ddab0057e33efa21393fc0577580d6287aJohn McCall 6041503f0ddab0057e33efa21393fc0577580d6287aJohn McCall // Build the pseudo-object expression. 605ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return Owned(ObjCSubscriptRefExpr::Create(Context, 606ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek BaseExpr, 607ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek IndexExpr, 608ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Context.PseudoObjectTy, 609ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek getterMethod, 610ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek setterMethod, RB)); 611ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 612ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek} 613ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 614ebcb57a8d298862c65043e88b2429591ab3c58d3Ted KremenekExprResult Sema::BuildObjCArrayLiteral(SourceRange SR, MultiExprArg Elements) { 615ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // Look up the NSArray class, if we haven't done so already. 616ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (!NSArrayDecl) { 617ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek NamedDecl *IF = LookupSingleName(TUScope, 618ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek NSAPIObj->getNSClassId(NSAPI::ClassId_NSArray), 619ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek SR.getBegin(), 620ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek LookupOrdinaryName); 621ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek NSArrayDecl = dyn_cast_or_null<ObjCInterfaceDecl>(IF); 6224e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!NSArrayDecl && getLangOpts().DebuggerObjCLiteral) 623ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek NSArrayDecl = ObjCInterfaceDecl::Create (Context, 624ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Context.getTranslationUnitDecl(), 625ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek SourceLocation(), 626ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek NSAPIObj->getNSClassId(NSAPI::ClassId_NSArray), 627ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 0, SourceLocation()); 628ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 629ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (!NSArrayDecl) { 630ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Diag(SR.getBegin(), diag::err_undeclared_nsarray); 631ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return ExprError(); 632ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 633ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 634ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 635ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // Find the arrayWithObjects:count: method, if we haven't done so already. 636ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek QualType IdT = Context.getObjCIdType(); 637ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (!ArrayWithObjectsMethod) { 638ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Selector 639ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Sel = NSAPIObj->getNSArraySelector(NSAPI::NSArr_arrayWithObjectsCount); 640c8521fae12432f0dcf174988832c1db88a6b6449Jordy Rose ObjCMethodDecl *Method = NSArrayDecl->lookupClassMethod(Sel); 641c8521fae12432f0dcf174988832c1db88a6b6449Jordy Rose if (!Method && getLangOpts().DebuggerObjCLiteral) { 642ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek TypeSourceInfo *ResultTInfo = 0; 643c8521fae12432f0dcf174988832c1db88a6b6449Jordy Rose Method = ObjCMethodDecl::Create(Context, 644ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek SourceLocation(), SourceLocation(), Sel, 645ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek IdT, 646ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ResultTInfo, 647ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Context.getTranslationUnitDecl(), 648ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek false /*Instance*/, false/*isVariadic*/, 6491e4691b9d8e1bdcc8ef62b323969d702c51b3c08Jordan Rose /*isPropertyAccessor=*/false, 650ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek /*isImplicitlyDeclared=*/true, /*isDefined=*/false, 651ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ObjCMethodDecl::Required, 652ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek false); 653ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek SmallVector<ParmVarDecl *, 2> Params; 654c8521fae12432f0dcf174988832c1db88a6b6449Jordy Rose ParmVarDecl *objects = ParmVarDecl::Create(Context, Method, 655d2d065545ba7b4349ae02afe07f799047443f1a0Jordy Rose SourceLocation(), 656d2d065545ba7b4349ae02afe07f799047443f1a0Jordy Rose SourceLocation(), 657d2d065545ba7b4349ae02afe07f799047443f1a0Jordy Rose &Context.Idents.get("objects"), 658d2d065545ba7b4349ae02afe07f799047443f1a0Jordy Rose Context.getPointerType(IdT), 659d2615cc53b916e8aae45783ca7113b93de515ce3Rafael Espindola /*TInfo=*/0, SC_None, 0); 660ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Params.push_back(objects); 661c8521fae12432f0dcf174988832c1db88a6b6449Jordy Rose ParmVarDecl *cnt = ParmVarDecl::Create(Context, Method, 662d2d065545ba7b4349ae02afe07f799047443f1a0Jordy Rose SourceLocation(), 663d2d065545ba7b4349ae02afe07f799047443f1a0Jordy Rose SourceLocation(), 664d2d065545ba7b4349ae02afe07f799047443f1a0Jordy Rose &Context.Idents.get("cnt"), 665d2d065545ba7b4349ae02afe07f799047443f1a0Jordy Rose Context.UnsignedLongTy, 666d2615cc53b916e8aae45783ca7113b93de515ce3Rafael Espindola /*TInfo=*/0, SC_None, 0); 667ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Params.push_back(cnt); 668c8521fae12432f0dcf174988832c1db88a6b6449Jordy Rose Method->setMethodParams(Context, Params, ArrayRef<SourceLocation>()); 669ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 670ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 671c8521fae12432f0dcf174988832c1db88a6b6449Jordy Rose if (!validateBoxingMethod(*this, SR.getBegin(), NSArrayDecl, Sel, Method)) 672ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return ExprError(); 673c8521fae12432f0dcf174988832c1db88a6b6449Jordy Rose 6743eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose // Dig out the type that all elements should be converted to. 6753eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose QualType T = Method->param_begin()[0]->getType(); 6763eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose const PointerType *PtrT = T->getAs<PointerType>(); 6773eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose if (!PtrT || 6783eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose !Context.hasSameUnqualifiedType(PtrT->getPointeeType(), IdT)) { 6793eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose Diag(SR.getBegin(), diag::err_objc_literal_method_sig) 6803eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose << Sel; 6813eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose Diag(Method->param_begin()[0]->getLocation(), 6823eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose diag::note_objc_literal_method_param) 6833eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose << 0 << T 6843eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose << Context.getPointerType(IdT.withConst()); 6853eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose return ExprError(); 6863eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose } 6873eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose 6883eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose // Check that the 'count' parameter is integral. 6893eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose if (!Method->param_begin()[1]->getType()->isIntegerType()) { 6903eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose Diag(SR.getBegin(), diag::err_objc_literal_method_sig) 6913eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose << Sel; 6923eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose Diag(Method->param_begin()[1]->getLocation(), 6933eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose diag::note_objc_literal_method_param) 6943eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose << 1 6953eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose << Method->param_begin()[1]->getType() 6963eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose << "integral"; 6973eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose return ExprError(); 6983eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose } 6993eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose 7003eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose // We've found a good +arrayWithObjects:count: method. Save it! 701c8521fae12432f0dcf174988832c1db88a6b6449Jordy Rose ArrayWithObjectsMethod = Method; 702ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 703ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 7043eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose QualType ObjectsType = ArrayWithObjectsMethod->param_begin()[0]->getType(); 7053eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose QualType RequiredType = ObjectsType->castAs<PointerType>()->getPointeeType(); 706ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 707ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // Check that each of the elements provided is valid in a collection literal, 708ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // performing conversions as necessary. 7095354e77e60e82828c7c2361f5c688c2667ab59ccBenjamin Kramer Expr **ElementsBuffer = Elements.data(); 710ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek for (unsigned I = 0, N = Elements.size(); I != N; ++I) { 711ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ExprResult Converted = CheckObjCCollectionLiteralElement(*this, 712ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ElementsBuffer[I], 7133eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose RequiredType); 714ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (Converted.isInvalid()) 715ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return ExprError(); 716ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 717ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ElementsBuffer[I] = Converted.get(); 718ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 719ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 720ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek QualType Ty 721ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek = Context.getObjCObjectPointerType( 722ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Context.getObjCInterfaceType(NSArrayDecl)); 723ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 724ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return MaybeBindToTemporary( 7255354e77e60e82828c7c2361f5c688c2667ab59ccBenjamin Kramer ObjCArrayLiteral::Create(Context, Elements, Ty, 7265354e77e60e82828c7c2361f5c688c2667ab59ccBenjamin Kramer ArrayWithObjectsMethod, SR)); 727ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek} 728ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 729ebcb57a8d298862c65043e88b2429591ab3c58d3Ted KremenekExprResult Sema::BuildObjCDictionaryLiteral(SourceRange SR, 730ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ObjCDictionaryElement *Elements, 731ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek unsigned NumElements) { 732ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // Look up the NSDictionary class, if we haven't done so already. 733ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (!NSDictionaryDecl) { 734ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek NamedDecl *IF = LookupSingleName(TUScope, 735ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek NSAPIObj->getNSClassId(NSAPI::ClassId_NSDictionary), 736ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek SR.getBegin(), LookupOrdinaryName); 737ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek NSDictionaryDecl = dyn_cast_or_null<ObjCInterfaceDecl>(IF); 7384e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!NSDictionaryDecl && getLangOpts().DebuggerObjCLiteral) 739ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek NSDictionaryDecl = ObjCInterfaceDecl::Create (Context, 740ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Context.getTranslationUnitDecl(), 741ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek SourceLocation(), 742ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek NSAPIObj->getNSClassId(NSAPI::ClassId_NSDictionary), 743ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 0, SourceLocation()); 744ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 745ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (!NSDictionaryDecl) { 746ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Diag(SR.getBegin(), diag::err_undeclared_nsdictionary); 747ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return ExprError(); 748ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 749ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 750ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 751ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // Find the dictionaryWithObjects:forKeys:count: method, if we haven't done 752ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // so already. 753ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek QualType IdT = Context.getObjCIdType(); 754ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (!DictionaryWithObjectsMethod) { 755ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Selector Sel = NSAPIObj->getNSDictionarySelector( 756d2d065545ba7b4349ae02afe07f799047443f1a0Jordy Rose NSAPI::NSDict_dictionaryWithObjectsForKeysCount); 757c8521fae12432f0dcf174988832c1db88a6b6449Jordy Rose ObjCMethodDecl *Method = NSDictionaryDecl->lookupClassMethod(Sel); 758c8521fae12432f0dcf174988832c1db88a6b6449Jordy Rose if (!Method && getLangOpts().DebuggerObjCLiteral) { 759c8521fae12432f0dcf174988832c1db88a6b6449Jordy Rose Method = ObjCMethodDecl::Create(Context, 760ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek SourceLocation(), SourceLocation(), Sel, 761ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek IdT, 762ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 0 /*TypeSourceInfo */, 763ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Context.getTranslationUnitDecl(), 764ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek false /*Instance*/, false/*isVariadic*/, 7651e4691b9d8e1bdcc8ef62b323969d702c51b3c08Jordan Rose /*isPropertyAccessor=*/false, 766ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek /*isImplicitlyDeclared=*/true, /*isDefined=*/false, 767ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ObjCMethodDecl::Required, 768ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek false); 769ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek SmallVector<ParmVarDecl *, 3> Params; 770c8521fae12432f0dcf174988832c1db88a6b6449Jordy Rose ParmVarDecl *objects = ParmVarDecl::Create(Context, Method, 771d2d065545ba7b4349ae02afe07f799047443f1a0Jordy Rose SourceLocation(), 772d2d065545ba7b4349ae02afe07f799047443f1a0Jordy Rose SourceLocation(), 773d2d065545ba7b4349ae02afe07f799047443f1a0Jordy Rose &Context.Idents.get("objects"), 774d2d065545ba7b4349ae02afe07f799047443f1a0Jordy Rose Context.getPointerType(IdT), 775d2615cc53b916e8aae45783ca7113b93de515ce3Rafael Espindola /*TInfo=*/0, SC_None, 0); 776ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Params.push_back(objects); 777c8521fae12432f0dcf174988832c1db88a6b6449Jordy Rose ParmVarDecl *keys = ParmVarDecl::Create(Context, Method, 778d2d065545ba7b4349ae02afe07f799047443f1a0Jordy Rose SourceLocation(), 779d2d065545ba7b4349ae02afe07f799047443f1a0Jordy Rose SourceLocation(), 780d2d065545ba7b4349ae02afe07f799047443f1a0Jordy Rose &Context.Idents.get("keys"), 781d2d065545ba7b4349ae02afe07f799047443f1a0Jordy Rose Context.getPointerType(IdT), 782d2615cc53b916e8aae45783ca7113b93de515ce3Rafael Espindola /*TInfo=*/0, SC_None, 0); 783ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Params.push_back(keys); 784c8521fae12432f0dcf174988832c1db88a6b6449Jordy Rose ParmVarDecl *cnt = ParmVarDecl::Create(Context, Method, 785d2d065545ba7b4349ae02afe07f799047443f1a0Jordy Rose SourceLocation(), 786d2d065545ba7b4349ae02afe07f799047443f1a0Jordy Rose SourceLocation(), 787d2d065545ba7b4349ae02afe07f799047443f1a0Jordy Rose &Context.Idents.get("cnt"), 788d2d065545ba7b4349ae02afe07f799047443f1a0Jordy Rose Context.UnsignedLongTy, 789d2615cc53b916e8aae45783ca7113b93de515ce3Rafael Espindola /*TInfo=*/0, SC_None, 0); 790ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Params.push_back(cnt); 791c8521fae12432f0dcf174988832c1db88a6b6449Jordy Rose Method->setMethodParams(Context, Params, ArrayRef<SourceLocation>()); 792ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 793ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 794c8521fae12432f0dcf174988832c1db88a6b6449Jordy Rose if (!validateBoxingMethod(*this, SR.getBegin(), NSDictionaryDecl, Sel, 795c8521fae12432f0dcf174988832c1db88a6b6449Jordy Rose Method)) 796c8521fae12432f0dcf174988832c1db88a6b6449Jordy Rose return ExprError(); 797c8521fae12432f0dcf174988832c1db88a6b6449Jordy Rose 7983eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose // Dig out the type that all values should be converted to. 7993eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose QualType ValueT = Method->param_begin()[0]->getType(); 8003eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose const PointerType *PtrValue = ValueT->getAs<PointerType>(); 8013eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose if (!PtrValue || 8023eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose !Context.hasSameUnqualifiedType(PtrValue->getPointeeType(), IdT)) { 8033eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose Diag(SR.getBegin(), diag::err_objc_literal_method_sig) 8043eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose << Sel; 8053eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose Diag(Method->param_begin()[0]->getLocation(), 8063eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose diag::note_objc_literal_method_param) 8073eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose << 0 << ValueT 8083eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose << Context.getPointerType(IdT.withConst()); 8093eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose return ExprError(); 8103eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose } 811ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 8123eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose // Dig out the type that all keys should be converted to. 8133eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose QualType KeyT = Method->param_begin()[1]->getType(); 8143eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose const PointerType *PtrKey = KeyT->getAs<PointerType>(); 8153eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose if (!PtrKey || 8163eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose !Context.hasSameUnqualifiedType(PtrKey->getPointeeType(), 8173eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose IdT)) { 8183eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose bool err = true; 8193eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose if (PtrKey) { 8203eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose if (QIDNSCopying.isNull()) { 8213eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose // key argument of selector is id<NSCopying>? 8223eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose if (ObjCProtocolDecl *NSCopyingPDecl = 8233eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose LookupProtocol(&Context.Idents.get("NSCopying"), SR.getBegin())) { 8243eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose ObjCProtocolDecl *PQ[] = {NSCopyingPDecl}; 8253eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose QIDNSCopying = 8263eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose Context.getObjCObjectType(Context.ObjCBuiltinIdTy, 8273eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose (ObjCProtocolDecl**) PQ,1); 8283eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose QIDNSCopying = Context.getObjCObjectPointerType(QIDNSCopying); 8293eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose } 830ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 8313eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose if (!QIDNSCopying.isNull()) 8323eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose err = !Context.hasSameUnqualifiedType(PtrKey->getPointeeType(), 8333eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose QIDNSCopying); 834ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 835ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 8363eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose if (err) { 8373eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose Diag(SR.getBegin(), diag::err_objc_literal_method_sig) 8383eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose << Sel; 8393eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose Diag(Method->param_begin()[1]->getLocation(), 8403eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose diag::note_objc_literal_method_param) 8413eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose << 1 << KeyT 8423eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose << Context.getPointerType(IdT.withConst()); 8433eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose return ExprError(); 8443eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose } 8453eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose } 8463eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose 8473eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose // Check that the 'count' parameter is integral. 8483eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose QualType CountType = Method->param_begin()[2]->getType(); 8493eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose if (!CountType->isIntegerType()) { 850ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Diag(SR.getBegin(), diag::err_objc_literal_method_sig) 8513eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose << Sel; 8523eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose Diag(Method->param_begin()[2]->getLocation(), 853ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek diag::note_objc_literal_method_param) 8543eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose << 2 << CountType 8553eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose << "integral"; 856ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return ExprError(); 857ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 8583eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose 8593eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose // We've found a good +dictionaryWithObjects:keys:count: method; save it! 8603eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose DictionaryWithObjectsMethod = Method; 861ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 8623eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose 8633eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose QualType ValuesT = DictionaryWithObjectsMethod->param_begin()[0]->getType(); 8643eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose QualType ValueT = ValuesT->castAs<PointerType>()->getPointeeType(); 8653eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose QualType KeysT = DictionaryWithObjectsMethod->param_begin()[1]->getType(); 8663eda6fa901b462f0b5f72d0651f46d804aac1844Jordy Rose QualType KeyT = KeysT->castAs<PointerType>()->getPointeeType(); 867ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 868ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // Check that each of the keys and values provided is valid in a collection 869ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // literal, performing conversions as necessary. 870ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek bool HasPackExpansions = false; 871ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek for (unsigned I = 0, N = NumElements; I != N; ++I) { 872ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // Check the key. 873ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ExprResult Key = CheckObjCCollectionLiteralElement(*this, Elements[I].Key, 874ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek KeyT); 875ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (Key.isInvalid()) 876ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return ExprError(); 877ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 878ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // Check the value. 879ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ExprResult Value 880ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek = CheckObjCCollectionLiteralElement(*this, Elements[I].Value, ValueT); 881ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (Value.isInvalid()) 882ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return ExprError(); 883ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 884ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Elements[I].Key = Key.get(); 885ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Elements[I].Value = Value.get(); 886ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 887ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (Elements[I].EllipsisLoc.isInvalid()) 888ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek continue; 889ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 890ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (!Elements[I].Key->containsUnexpandedParameterPack() && 891ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek !Elements[I].Value->containsUnexpandedParameterPack()) { 892ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Diag(Elements[I].EllipsisLoc, 893ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek diag::err_pack_expansion_without_parameter_packs) 894ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek << SourceRange(Elements[I].Key->getLocStart(), 895ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Elements[I].Value->getLocEnd()); 896ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return ExprError(); 897ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 898ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 899ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek HasPackExpansions = true; 900ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 901ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 902ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 903ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek QualType Ty 904ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek = Context.getObjCObjectPointerType( 905ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Context.getObjCInterfaceType(NSDictionaryDecl)); 906ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return MaybeBindToTemporary( 907ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ObjCDictionaryLiteral::Create(Context, 908ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek llvm::makeArrayRef(Elements, 909ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek NumElements), 910ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek HasPackExpansions, 911ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Ty, 912ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek DictionaryWithObjectsMethod, SR)); 91385a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner} 91485a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner 9153b5904ba83fc9b968b1cd6f1ce78d01bfd6e8686Argyrios KyrtzidisExprResult Sema::BuildObjCEncodeExpression(SourceLocation AtLoc, 91681d3466d037dc5844234c7a93dab21a6ad986e7dDouglas Gregor TypeSourceInfo *EncodedTypeInfo, 917fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson SourceLocation RParenLoc) { 91881d3466d037dc5844234c7a93dab21a6ad986e7dDouglas Gregor QualType EncodedType = EncodedTypeInfo->getType(); 919fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson QualType StrTy; 9201eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (EncodedType->isDependentType()) 921fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson StrTy = Context.DependentTy; 922fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson else { 9236c91615e5d67d59e752037beb475c4b827431172Fariborz Jahanian if (!EncodedType->getAsArrayTypeUnsafe() && //// Incomplete array is handled. 9246c91615e5d67d59e752037beb475c4b827431172Fariborz Jahanian !EncodedType->isVoidType()) // void is handled too. 9253b5904ba83fc9b968b1cd6f1ce78d01bfd6e8686Argyrios Kyrtzidis if (RequireCompleteType(AtLoc, EncodedType, 926d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor diag::err_incomplete_type_objc_at_encode, 927d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor EncodedTypeInfo->getTypeLoc())) 9283b5904ba83fc9b968b1cd6f1ce78d01bfd6e8686Argyrios Kyrtzidis return ExprError(); 9293b5904ba83fc9b968b1cd6f1ce78d01bfd6e8686Argyrios Kyrtzidis 930fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson std::string Str; 931fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson Context.getObjCEncodingForType(EncodedType, Str); 932fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson 933fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson // The type of @encode is the same as the type of the corresponding string, 934fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson // which is an array type. 935fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson StrTy = Context.CharTy; 936fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson // A C++ string literal has a const-qualified element type (C++ 2.13.4p1). 9374e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (getLangOpts().CPlusPlus || getLangOpts().ConstStrings) 938fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson StrTy.addConst(); 939fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson StrTy = Context.getConstantArrayType(StrTy, llvm::APInt(32, Str.size()+1), 940fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson ArrayType::Normal, 0); 941fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson } 9421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 94381d3466d037dc5844234c7a93dab21a6ad986e7dDouglas Gregor return new (Context) ObjCEncodeExpr(StrTy, EncodedTypeInfo, AtLoc, RParenLoc); 944fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson} 945fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson 946f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCallExprResult Sema::ParseObjCEncodeExpression(SourceLocation AtLoc, 947f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall SourceLocation EncodeLoc, 948f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall SourceLocation LParenLoc, 949f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall ParsedType ty, 950f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall SourceLocation RParenLoc) { 951e8661906d49ef6c9694a9cc845ca62a85dbc016dArgyrios Kyrtzidis // FIXME: Preserve type source info ? 95281d3466d037dc5844234c7a93dab21a6ad986e7dDouglas Gregor TypeSourceInfo *TInfo; 95381d3466d037dc5844234c7a93dab21a6ad986e7dDouglas Gregor QualType EncodedType = GetTypeFromParser(ty, &TInfo); 95481d3466d037dc5844234c7a93dab21a6ad986e7dDouglas Gregor if (!TInfo) 95581d3466d037dc5844234c7a93dab21a6ad986e7dDouglas Gregor TInfo = Context.getTrivialTypeSourceInfo(EncodedType, 95681d3466d037dc5844234c7a93dab21a6ad986e7dDouglas Gregor PP.getLocForEndOfToken(LParenLoc)); 95785a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner 95881d3466d037dc5844234c7a93dab21a6ad986e7dDouglas Gregor return BuildObjCEncodeExpression(AtLoc, TInfo, RParenLoc); 95985a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner} 96085a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner 961f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCallExprResult Sema::ParseObjCSelectorExpression(Selector Sel, 962f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall SourceLocation AtLoc, 963f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall SourceLocation SelLoc, 964f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall SourceLocation LParenLoc, 96548f3cc2b2be1d32df14234904539b34e6e387e4aFariborz Jahanian SourceLocation RParenLoc) { 96648f3cc2b2be1d32df14234904539b34e6e387e4aFariborz Jahanian ObjCMethodDecl *Method = LookupInstanceMethodInGlobalPool(Sel, 96748f3cc2b2be1d32df14234904539b34e6e387e4aFariborz Jahanian SourceRange(LParenLoc, RParenLoc), false, false); 96848f3cc2b2be1d32df14234904539b34e6e387e4aFariborz Jahanian if (!Method) 96948f3cc2b2be1d32df14234904539b34e6e387e4aFariborz Jahanian Method = LookupFactoryMethodInGlobalPool(Sel, 9707ff22ded2221f442b1f8ff78172938d04ec8c926Fariborz Jahanian SourceRange(LParenLoc, RParenLoc)); 97148f3cc2b2be1d32df14234904539b34e6e387e4aFariborz Jahanian if (!Method) 97248f3cc2b2be1d32df14234904539b34e6e387e4aFariborz Jahanian Diag(SelLoc, diag::warn_undeclared_selector) << Sel; 9734c91d89453c4a540d9ad697ceae89c8ef6049a6bFariborz Jahanian 97448f3cc2b2be1d32df14234904539b34e6e387e4aFariborz Jahanian if (!Method || 97548f3cc2b2be1d32df14234904539b34e6e387e4aFariborz Jahanian Method->getImplementationControl() != ObjCMethodDecl::Optional) { 97648f3cc2b2be1d32df14234904539b34e6e387e4aFariborz Jahanian llvm::DenseMap<Selector, SourceLocation>::iterator Pos 97748f3cc2b2be1d32df14234904539b34e6e387e4aFariborz Jahanian = ReferencedSelectors.find(Sel); 97848f3cc2b2be1d32df14234904539b34e6e387e4aFariborz Jahanian if (Pos == ReferencedSelectors.end()) 97948f3cc2b2be1d32df14234904539b34e6e387e4aFariborz Jahanian ReferencedSelectors.insert(std::make_pair(Sel, AtLoc)); 9804c91d89453c4a540d9ad697ceae89c8ef6049a6bFariborz Jahanian } 9813fe104154dd2e8ffb351142d74f308938b5c99bfFariborz Jahanian 98248f3cc2b2be1d32df14234904539b34e6e387e4aFariborz Jahanian // In ARC, forbid the user from using @selector for 983f85e193739c953358c865005855253af4f68a497John McCall // retain/release/autorelease/dealloc/retainCount. 9844e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (getLangOpts().ObjCAutoRefCount) { 985f85e193739c953358c865005855253af4f68a497John McCall switch (Sel.getMethodFamily()) { 986f85e193739c953358c865005855253af4f68a497John McCall case OMF_retain: 987f85e193739c953358c865005855253af4f68a497John McCall case OMF_release: 988f85e193739c953358c865005855253af4f68a497John McCall case OMF_autorelease: 989f85e193739c953358c865005855253af4f68a497John McCall case OMF_retainCount: 990f85e193739c953358c865005855253af4f68a497John McCall case OMF_dealloc: 991f85e193739c953358c865005855253af4f68a497John McCall Diag(AtLoc, diag::err_arc_illegal_selector) << 992f85e193739c953358c865005855253af4f68a497John McCall Sel << SourceRange(LParenLoc, RParenLoc); 993f85e193739c953358c865005855253af4f68a497John McCall break; 994f85e193739c953358c865005855253af4f68a497John McCall 995f85e193739c953358c865005855253af4f68a497John McCall case OMF_None: 996f85e193739c953358c865005855253af4f68a497John McCall case OMF_alloc: 997f85e193739c953358c865005855253af4f68a497John McCall case OMF_copy: 99880cb6e69d9e85231588ae604e4bc2bc9a07389afNico Weber case OMF_finalize: 999f85e193739c953358c865005855253af4f68a497John McCall case OMF_init: 1000f85e193739c953358c865005855253af4f68a497John McCall case OMF_mutableCopy: 1001f85e193739c953358c865005855253af4f68a497John McCall case OMF_new: 1002f85e193739c953358c865005855253af4f68a497John McCall case OMF_self: 10039670e179a67d868e171feac44fb8f9e2f108c5e8Fariborz Jahanian case OMF_performSelector: 1004f85e193739c953358c865005855253af4f68a497John McCall break; 1005f85e193739c953358c865005855253af4f68a497John McCall } 1006f85e193739c953358c865005855253af4f68a497John McCall } 1007a0af1fe67da29343cd182c51cd48d91b740ecef2Chris Lattner QualType Ty = Context.getObjCSelType(); 10086d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbar return new (Context) ObjCSelectorExpr(Ty, Sel, AtLoc, RParenLoc); 100985a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner} 101085a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner 1011f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCallExprResult Sema::ParseObjCProtocolExpression(IdentifierInfo *ProtocolId, 1012f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall SourceLocation AtLoc, 1013f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall SourceLocation ProtoLoc, 1014f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall SourceLocation LParenLoc, 10157d24e289bea2accaaed79c6ca3e5cdd0c204ddc1Argyrios Kyrtzidis SourceLocation ProtoIdLoc, 1016f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall SourceLocation RParenLoc) { 10177d24e289bea2accaaed79c6ca3e5cdd0c204ddc1Argyrios Kyrtzidis ObjCProtocolDecl* PDecl = LookupProtocol(ProtocolId, ProtoIdLoc); 101885a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner if (!PDecl) { 10193c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner Diag(ProtoLoc, diag::err_undeclared_protocol) << ProtocolId; 102085a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner return true; 102185a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner } 10221eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1023a0af1fe67da29343cd182c51cd48d91b740ecef2Chris Lattner QualType Ty = Context.getObjCProtoType(); 1024a0af1fe67da29343cd182c51cd48d91b740ecef2Chris Lattner if (Ty.isNull()) 102585a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner return true; 102614108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff Ty = Context.getObjCObjectPointerType(Ty); 10277d24e289bea2accaaed79c6ca3e5cdd0c204ddc1Argyrios Kyrtzidis return new (Context) ObjCProtocolExpr(Ty, PDecl, AtLoc, ProtoIdLoc, RParenLoc); 102885a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner} 102985a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner 103026743b20e4a8c2a986e6453f0c38beba0afef633John McCall/// Try to capture an implicit reference to 'self'. 1031b942cb24a060435b18fef5b43eb33d77afc0d03aEli FriedmanObjCMethodDecl *Sema::tryCaptureObjCSelf(SourceLocation Loc) { 1032b942cb24a060435b18fef5b43eb33d77afc0d03aEli Friedman DeclContext *DC = getFunctionLevelDeclContext(); 103326743b20e4a8c2a986e6453f0c38beba0afef633John McCall 103426743b20e4a8c2a986e6453f0c38beba0afef633John McCall // If we're not in an ObjC method, error out. Note that, unlike the 103526743b20e4a8c2a986e6453f0c38beba0afef633John McCall // C++ case, we don't require an instance method --- class methods 103626743b20e4a8c2a986e6453f0c38beba0afef633John McCall // still have a 'self', and we really do still need to capture it! 103726743b20e4a8c2a986e6453f0c38beba0afef633John McCall ObjCMethodDecl *method = dyn_cast<ObjCMethodDecl>(DC); 103826743b20e4a8c2a986e6453f0c38beba0afef633John McCall if (!method) 103926743b20e4a8c2a986e6453f0c38beba0afef633John McCall return 0; 104026743b20e4a8c2a986e6453f0c38beba0afef633John McCall 1041999713eea940f4e087cc3ac878689c5c5c7a7225Douglas Gregor tryCaptureVariable(method->getSelfDecl(), Loc); 104226743b20e4a8c2a986e6453f0c38beba0afef633John McCall 104326743b20e4a8c2a986e6453f0c38beba0afef633John McCall return method; 104426743b20e4a8c2a986e6453f0c38beba0afef633John McCall} 104526743b20e4a8c2a986e6453f0c38beba0afef633John McCall 10465c16d635ff67fd8f083a704b7c82607ed49a8ba2Douglas Gregorstatic QualType stripObjCInstanceType(ASTContext &Context, QualType T) { 10475c16d635ff67fd8f083a704b7c82607ed49a8ba2Douglas Gregor if (T == Context.getObjCInstanceType()) 10485c16d635ff67fd8f083a704b7c82607ed49a8ba2Douglas Gregor return Context.getObjCIdType(); 10495c16d635ff67fd8f083a704b7c82607ed49a8ba2Douglas Gregor 10505c16d635ff67fd8f083a704b7c82607ed49a8ba2Douglas Gregor return T; 10515c16d635ff67fd8f083a704b7c82607ed49a8ba2Douglas Gregor} 10525c16d635ff67fd8f083a704b7c82607ed49a8ba2Douglas Gregor 1053926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas GregorQualType Sema::getMessageSendResultType(QualType ReceiverType, 1054926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor ObjCMethodDecl *Method, 1055926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor bool isClassMessage, bool isSuperMessage) { 1056926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor assert(Method && "Must have a method"); 1057926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor if (!Method->hasRelatedResultType()) 1058926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor return Method->getSendResultType(); 1059926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor 1060926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor // If a method has a related return type: 1061926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor // - if the method found is an instance method, but the message send 1062926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor // was a class message send, T is the declared return type of the method 1063926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor // found 1064926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor if (Method->isInstanceMethod() && isClassMessage) 10655c16d635ff67fd8f083a704b7c82607ed49a8ba2Douglas Gregor return stripObjCInstanceType(Context, Method->getSendResultType()); 1066926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor 1067926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor // - if the receiver is super, T is a pointer to the class of the 1068926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor // enclosing method definition 1069926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor if (isSuperMessage) { 1070926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor if (ObjCMethodDecl *CurMethod = getCurMethodDecl()) 1071926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor if (ObjCInterfaceDecl *Class = CurMethod->getClassInterface()) 1072926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor return Context.getObjCObjectPointerType( 1073926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor Context.getObjCInterfaceType(Class)); 1074926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor } 1075926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor 1076926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor // - if the receiver is the name of a class U, T is a pointer to U 1077926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor if (ReceiverType->getAs<ObjCInterfaceType>() || 1078926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor ReceiverType->isObjCQualifiedInterfaceType()) 1079926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor return Context.getObjCObjectPointerType(ReceiverType); 1080926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor // - if the receiver is of type Class or qualified Class type, 1081926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor // T is the declared return type of the method. 1082926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor if (ReceiverType->isObjCClassType() || 1083926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor ReceiverType->isObjCQualifiedClassType()) 10845c16d635ff67fd8f083a704b7c82607ed49a8ba2Douglas Gregor return stripObjCInstanceType(Context, Method->getSendResultType()); 1085926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor 1086926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor // - if the receiver is id, qualified id, Class, or qualified Class, T 1087926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor // is the receiver type, otherwise 1088926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor // - T is the type of the receiver expression. 1089926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor return ReceiverType; 1090926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor} 1091926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor 10927cca821e1acf0f1b4fe892c3111bfb2086832e4eJohn McCall/// Look for an ObjC method whose result type exactly matches the given type. 10937cca821e1acf0f1b4fe892c3111bfb2086832e4eJohn McCallstatic const ObjCMethodDecl * 10947cca821e1acf0f1b4fe892c3111bfb2086832e4eJohn McCallfindExplicitInstancetypeDeclarer(const ObjCMethodDecl *MD, 10957cca821e1acf0f1b4fe892c3111bfb2086832e4eJohn McCall QualType instancetype) { 10967cca821e1acf0f1b4fe892c3111bfb2086832e4eJohn McCall if (MD->getResultType() == instancetype) return MD; 10977cca821e1acf0f1b4fe892c3111bfb2086832e4eJohn McCall 10987cca821e1acf0f1b4fe892c3111bfb2086832e4eJohn McCall // For these purposes, a method in an @implementation overrides a 10997cca821e1acf0f1b4fe892c3111bfb2086832e4eJohn McCall // declaration in the @interface. 11007cca821e1acf0f1b4fe892c3111bfb2086832e4eJohn McCall if (const ObjCImplDecl *impl = 11017cca821e1acf0f1b4fe892c3111bfb2086832e4eJohn McCall dyn_cast<ObjCImplDecl>(MD->getDeclContext())) { 11027cca821e1acf0f1b4fe892c3111bfb2086832e4eJohn McCall const ObjCContainerDecl *iface; 11037cca821e1acf0f1b4fe892c3111bfb2086832e4eJohn McCall if (const ObjCCategoryImplDecl *catImpl = 11047cca821e1acf0f1b4fe892c3111bfb2086832e4eJohn McCall dyn_cast<ObjCCategoryImplDecl>(impl)) { 11057cca821e1acf0f1b4fe892c3111bfb2086832e4eJohn McCall iface = catImpl->getCategoryDecl(); 11067cca821e1acf0f1b4fe892c3111bfb2086832e4eJohn McCall } else { 11077cca821e1acf0f1b4fe892c3111bfb2086832e4eJohn McCall iface = impl->getClassInterface(); 11087cca821e1acf0f1b4fe892c3111bfb2086832e4eJohn McCall } 11097cca821e1acf0f1b4fe892c3111bfb2086832e4eJohn McCall 11107cca821e1acf0f1b4fe892c3111bfb2086832e4eJohn McCall const ObjCMethodDecl *ifaceMD = 11117cca821e1acf0f1b4fe892c3111bfb2086832e4eJohn McCall iface->getMethod(MD->getSelector(), MD->isInstanceMethod()); 11127cca821e1acf0f1b4fe892c3111bfb2086832e4eJohn McCall if (ifaceMD) return findExplicitInstancetypeDeclarer(ifaceMD, instancetype); 11137cca821e1acf0f1b4fe892c3111bfb2086832e4eJohn McCall } 11147cca821e1acf0f1b4fe892c3111bfb2086832e4eJohn McCall 11157cca821e1acf0f1b4fe892c3111bfb2086832e4eJohn McCall SmallVector<const ObjCMethodDecl *, 4> overrides; 11167cca821e1acf0f1b4fe892c3111bfb2086832e4eJohn McCall MD->getOverriddenMethods(overrides); 11177cca821e1acf0f1b4fe892c3111bfb2086832e4eJohn McCall for (unsigned i = 0, e = overrides.size(); i != e; ++i) { 11187cca821e1acf0f1b4fe892c3111bfb2086832e4eJohn McCall if (const ObjCMethodDecl *result = 11197cca821e1acf0f1b4fe892c3111bfb2086832e4eJohn McCall findExplicitInstancetypeDeclarer(overrides[i], instancetype)) 11207cca821e1acf0f1b4fe892c3111bfb2086832e4eJohn McCall return result; 11217cca821e1acf0f1b4fe892c3111bfb2086832e4eJohn McCall } 11227cca821e1acf0f1b4fe892c3111bfb2086832e4eJohn McCall 11237cca821e1acf0f1b4fe892c3111bfb2086832e4eJohn McCall return 0; 11247cca821e1acf0f1b4fe892c3111bfb2086832e4eJohn McCall} 11257cca821e1acf0f1b4fe892c3111bfb2086832e4eJohn McCall 11267cca821e1acf0f1b4fe892c3111bfb2086832e4eJohn McCallvoid Sema::EmitRelatedResultTypeNoteForReturn(QualType destType) { 11277cca821e1acf0f1b4fe892c3111bfb2086832e4eJohn McCall // Only complain if we're in an ObjC method and the required return 11287cca821e1acf0f1b4fe892c3111bfb2086832e4eJohn McCall // type doesn't match the method's declared return type. 11297cca821e1acf0f1b4fe892c3111bfb2086832e4eJohn McCall ObjCMethodDecl *MD = dyn_cast<ObjCMethodDecl>(CurContext); 11307cca821e1acf0f1b4fe892c3111bfb2086832e4eJohn McCall if (!MD || !MD->hasRelatedResultType() || 11317cca821e1acf0f1b4fe892c3111bfb2086832e4eJohn McCall Context.hasSameUnqualifiedType(destType, MD->getResultType())) 11327cca821e1acf0f1b4fe892c3111bfb2086832e4eJohn McCall return; 11337cca821e1acf0f1b4fe892c3111bfb2086832e4eJohn McCall 11347cca821e1acf0f1b4fe892c3111bfb2086832e4eJohn McCall // Look for a method overridden by this method which explicitly uses 11357cca821e1acf0f1b4fe892c3111bfb2086832e4eJohn McCall // 'instancetype'. 11367cca821e1acf0f1b4fe892c3111bfb2086832e4eJohn McCall if (const ObjCMethodDecl *overridden = 11377cca821e1acf0f1b4fe892c3111bfb2086832e4eJohn McCall findExplicitInstancetypeDeclarer(MD, Context.getObjCInstanceType())) { 11387cca821e1acf0f1b4fe892c3111bfb2086832e4eJohn McCall SourceLocation loc; 11397cca821e1acf0f1b4fe892c3111bfb2086832e4eJohn McCall SourceRange range; 11407cca821e1acf0f1b4fe892c3111bfb2086832e4eJohn McCall if (TypeSourceInfo *TSI = overridden->getResultTypeSourceInfo()) { 11417cca821e1acf0f1b4fe892c3111bfb2086832e4eJohn McCall range = TSI->getTypeLoc().getSourceRange(); 11427cca821e1acf0f1b4fe892c3111bfb2086832e4eJohn McCall loc = range.getBegin(); 11437cca821e1acf0f1b4fe892c3111bfb2086832e4eJohn McCall } 11447cca821e1acf0f1b4fe892c3111bfb2086832e4eJohn McCall if (loc.isInvalid()) 11457cca821e1acf0f1b4fe892c3111bfb2086832e4eJohn McCall loc = overridden->getLocation(); 11467cca821e1acf0f1b4fe892c3111bfb2086832e4eJohn McCall Diag(loc, diag::note_related_result_type_explicit) 11477cca821e1acf0f1b4fe892c3111bfb2086832e4eJohn McCall << /*current method*/ 1 << range; 11487cca821e1acf0f1b4fe892c3111bfb2086832e4eJohn McCall return; 11497cca821e1acf0f1b4fe892c3111bfb2086832e4eJohn McCall } 11507cca821e1acf0f1b4fe892c3111bfb2086832e4eJohn McCall 11517cca821e1acf0f1b4fe892c3111bfb2086832e4eJohn McCall // Otherwise, if we have an interesting method family, note that. 11527cca821e1acf0f1b4fe892c3111bfb2086832e4eJohn McCall // This should always trigger if the above didn't. 11537cca821e1acf0f1b4fe892c3111bfb2086832e4eJohn McCall if (ObjCMethodFamily family = MD->getMethodFamily()) 11547cca821e1acf0f1b4fe892c3111bfb2086832e4eJohn McCall Diag(MD->getLocation(), diag::note_related_result_type_family) 11557cca821e1acf0f1b4fe892c3111bfb2086832e4eJohn McCall << /*current method*/ 1 11567cca821e1acf0f1b4fe892c3111bfb2086832e4eJohn McCall << family; 11577cca821e1acf0f1b4fe892c3111bfb2086832e4eJohn McCall} 11587cca821e1acf0f1b4fe892c3111bfb2086832e4eJohn McCall 1159926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregorvoid Sema::EmitRelatedResultTypeNote(const Expr *E) { 1160926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor E = E->IgnoreParenImpCasts(); 1161926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor const ObjCMessageExpr *MsgSend = dyn_cast<ObjCMessageExpr>(E); 1162926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor if (!MsgSend) 1163926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor return; 1164926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor 1165926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor const ObjCMethodDecl *Method = MsgSend->getMethodDecl(); 1166926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor if (!Method) 1167926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor return; 1168926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor 1169926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor if (!Method->hasRelatedResultType()) 1170926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor return; 1171926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor 1172926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor if (Context.hasSameUnqualifiedType(Method->getResultType() 1173926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor .getNonReferenceType(), 1174926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor MsgSend->getType())) 1175926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor return; 1176926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor 1177e97179c675b341927807c718be215c8d1aab8acbDouglas Gregor if (!Context.hasSameUnqualifiedType(Method->getResultType(), 1178e97179c675b341927807c718be215c8d1aab8acbDouglas Gregor Context.getObjCInstanceType())) 1179e97179c675b341927807c718be215c8d1aab8acbDouglas Gregor return; 1180e97179c675b341927807c718be215c8d1aab8acbDouglas Gregor 1181926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor Diag(Method->getLocation(), diag::note_related_result_type_inferred) 1182926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor << Method->isInstanceMethod() << Method->getSelector() 1183926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor << MsgSend->getType(); 1184926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor} 118526743b20e4a8c2a986e6453f0c38beba0afef633John McCall 1186926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregorbool Sema::CheckMessageArgumentTypes(QualType ReceiverType, 1187926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor Expr **Args, unsigned NumArgs, 1188376c43223ee29334685250c59fdb11e4b3c594fbFariborz Jahanian Selector Sel, 1189376c43223ee29334685250c59fdb11e4b3c594fbFariborz Jahanian ArrayRef<SourceLocation> SelectorLocs, 1190376c43223ee29334685250c59fdb11e4b3c594fbFariborz Jahanian ObjCMethodDecl *Method, 1191926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor bool isClassMessage, bool isSuperMessage, 1192637cebb67c59765e1412c589550c8c9ba001baebDaniel Dunbar SourceLocation lbrac, SourceLocation rbrac, 1193f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall QualType &ReturnType, ExprValueKind &VK) { 1194637cebb67c59765e1412c589550c8c9ba001baebDaniel Dunbar if (!Method) { 11956660c8a4cc2115929d92be83bbc54c307002a321Daniel Dunbar // Apply default argument promotion as for (C99 6.5.2.2p6). 119692e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor for (unsigned i = 0; i != NumArgs; i++) { 119792e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor if (Args[i]->isTypeDependent()) 119892e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor continue; 119992e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor 120048f904271effd381ec3c1ae33b97d1ec7d95860aJohn McCall ExprResult result; 120148f904271effd381ec3c1ae33b97d1ec7d95860aJohn McCall if (getLangOpts().DebuggerSupport) { 120248f904271effd381ec3c1ae33b97d1ec7d95860aJohn McCall QualType paramTy; // ignored 120348f904271effd381ec3c1ae33b97d1ec7d95860aJohn McCall result = checkUnknownAnyArg(lbrac, Args[i], paramTy); 120448f904271effd381ec3c1ae33b97d1ec7d95860aJohn McCall } else { 120548f904271effd381ec3c1ae33b97d1ec7d95860aJohn McCall result = DefaultArgumentPromotion(Args[i]); 120648f904271effd381ec3c1ae33b97d1ec7d95860aJohn McCall } 120748f904271effd381ec3c1ae33b97d1ec7d95860aJohn McCall if (result.isInvalid()) 1208429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley return true; 120948f904271effd381ec3c1ae33b97d1ec7d95860aJohn McCall Args[i] = result.take(); 121092e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor } 12116660c8a4cc2115929d92be83bbc54c307002a321Daniel Dunbar 1212f85e193739c953358c865005855253af4f68a497John McCall unsigned DiagID; 12134e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (getLangOpts().ObjCAutoRefCount) 1214f85e193739c953358c865005855253af4f68a497John McCall DiagID = diag::err_arc_method_not_found; 1215f85e193739c953358c865005855253af4f68a497John McCall else 1216f85e193739c953358c865005855253af4f68a497John McCall DiagID = isClassMessage ? diag::warn_class_method_not_found 1217f85e193739c953358c865005855253af4f68a497John McCall : diag::warn_inst_method_not_found; 12184e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!getLangOpts().DebuggerSupport) 1219819e74544a326b90d13aa73e6497b187c6545ff5John McCall Diag(lbrac, DiagID) 1220376c43223ee29334685250c59fdb11e4b3c594fbFariborz Jahanian << Sel << isClassMessage << SourceRange(SelectorLocs.front(), 1221376c43223ee29334685250c59fdb11e4b3c594fbFariborz Jahanian SelectorLocs.back()); 122248218c60d6b53b7880917d1366ee716dec2145caJohn McCall 122348218c60d6b53b7880917d1366ee716dec2145caJohn McCall // In debuggers, we want to use __unknown_anytype for these 122448218c60d6b53b7880917d1366ee716dec2145caJohn McCall // results so that clients can cast them. 12254e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (getLangOpts().DebuggerSupport) { 122648218c60d6b53b7880917d1366ee716dec2145caJohn McCall ReturnType = Context.UnknownAnyTy; 122748218c60d6b53b7880917d1366ee716dec2145caJohn McCall } else { 122848218c60d6b53b7880917d1366ee716dec2145caJohn McCall ReturnType = Context.getObjCIdType(); 122948218c60d6b53b7880917d1366ee716dec2145caJohn McCall } 1230f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall VK = VK_RValue; 1231637cebb67c59765e1412c589550c8c9ba001baebDaniel Dunbar return false; 1232637cebb67c59765e1412c589550c8c9ba001baebDaniel Dunbar } 12331eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1234926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor ReturnType = getMessageSendResultType(ReceiverType, Method, isClassMessage, 1235926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor isSuperMessage); 1236f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall VK = Expr::getValueKindForType(Method->getResultType()); 12371eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 123891e19b2029447e75d2c7730ff888cc396874685bDaniel Dunbar unsigned NumNamedArgs = Sel.getNumArgs(); 12394f4fd92c6c64ecbc65507f63ddd09211f732622cFariborz Jahanian // Method might have more arguments than selector indicates. This is due 12404f4fd92c6c64ecbc65507f63ddd09211f732622cFariborz Jahanian // to addition of c-style arguments in method. 12414f4fd92c6c64ecbc65507f63ddd09211f732622cFariborz Jahanian if (Method->param_size() > Sel.getNumArgs()) 12424f4fd92c6c64ecbc65507f63ddd09211f732622cFariborz Jahanian NumNamedArgs = Method->param_size(); 12434f4fd92c6c64ecbc65507f63ddd09211f732622cFariborz Jahanian // FIXME. This need be cleaned up. 12444f4fd92c6c64ecbc65507f63ddd09211f732622cFariborz Jahanian if (NumArgs < NumNamedArgs) { 1245f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall Diag(lbrac, diag::err_typecheck_call_too_few_args) 1246f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall << 2 << NumNamedArgs << NumArgs; 12474f4fd92c6c64ecbc65507f63ddd09211f732622cFariborz Jahanian return false; 12484f4fd92c6c64ecbc65507f63ddd09211f732622cFariborz Jahanian } 124991e19b2029447e75d2c7730ff888cc396874685bDaniel Dunbar 1250312531a8cd69c562d5687bd69fd334be99d87320Chris Lattner bool IsError = false; 125191e19b2029447e75d2c7730ff888cc396874685bDaniel Dunbar for (unsigned i = 0; i < NumNamedArgs; i++) { 125292e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor // We can't do any type-checking on a type-dependent argument. 125392e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor if (Args[i]->isTypeDependent()) 125492e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor continue; 125592e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor 125685a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner Expr *argExpr = Args[i]; 125792e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor 12585acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall ParmVarDecl *param = Method->param_begin()[i]; 125985a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner assert(argExpr && "CheckMessageArgumentTypes(): missing expression"); 12601eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 12615acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall // Strip the unbridged-cast placeholder expression off unless it's 12625acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall // a consumed argument. 12635acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall if (argExpr->hasPlaceholderType(BuiltinType::ARCUnbridgedCast) && 12645acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall !param->hasAttr<CFConsumedAttr>()) 12655acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall argExpr = stripARCUnbridgedCast(argExpr); 12665acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall 1267b8a8de316dade43fff95d7bfd2cfaa367f53faeaJohn McCall // If the parameter is __unknown_anytype, infer its type 1268b8a8de316dade43fff95d7bfd2cfaa367f53faeaJohn McCall // from the argument. 1269b8a8de316dade43fff95d7bfd2cfaa367f53faeaJohn McCall if (param->getType() == Context.UnknownAnyTy) { 127048f904271effd381ec3c1ae33b97d1ec7d95860aJohn McCall QualType paramType; 127148f904271effd381ec3c1ae33b97d1ec7d95860aJohn McCall ExprResult argE = checkUnknownAnyArg(lbrac, argExpr, paramType); 127248f904271effd381ec3c1ae33b97d1ec7d95860aJohn McCall if (argE.isInvalid()) { 1273b8a8de316dade43fff95d7bfd2cfaa367f53faeaJohn McCall IsError = true; 127448f904271effd381ec3c1ae33b97d1ec7d95860aJohn McCall } else { 127548f904271effd381ec3c1ae33b97d1ec7d95860aJohn McCall Args[i] = argE.take(); 1276b8a8de316dade43fff95d7bfd2cfaa367f53faeaJohn McCall 127748f904271effd381ec3c1ae33b97d1ec7d95860aJohn McCall // Update the parameter type in-place. 127848f904271effd381ec3c1ae33b97d1ec7d95860aJohn McCall param->setType(paramType); 127948f904271effd381ec3c1ae33b97d1ec7d95860aJohn McCall } 128048f904271effd381ec3c1ae33b97d1ec7d95860aJohn McCall continue; 1281b8a8de316dade43fff95d7bfd2cfaa367f53faeaJohn McCall } 1282b8a8de316dade43fff95d7bfd2cfaa367f53faeaJohn McCall 1283688fc9b9b4323a294f5bf4f8a83f7c365edec573Douglas Gregor if (RequireCompleteType(argExpr->getSourceRange().getBegin(), 12845acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall param->getType(), 1285d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor diag::err_call_incomplete_argument, argExpr)) 1286688fc9b9b4323a294f5bf4f8a83f7c365edec573Douglas Gregor return true; 1287688fc9b9b4323a294f5bf4f8a83f7c365edec573Douglas Gregor 1288745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian InitializedEntity Entity = InitializedEntity::InitializeParameter(Context, 12895acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall param); 12903fa5cae9b3812cab9fab6c042c3329bb70a3d046John McCall ExprResult ArgE = PerformCopyInitialization(Entity, lbrac, Owned(argExpr)); 1291688fc9b9b4323a294f5bf4f8a83f7c365edec573Douglas Gregor if (ArgE.isInvalid()) 1292688fc9b9b4323a294f5bf4f8a83f7c365edec573Douglas Gregor IsError = true; 1293688fc9b9b4323a294f5bf4f8a83f7c365edec573Douglas Gregor else 1294688fc9b9b4323a294f5bf4f8a83f7c365edec573Douglas Gregor Args[i] = ArgE.takeAs<Expr>(); 129585a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner } 129691e19b2029447e75d2c7730ff888cc396874685bDaniel Dunbar 129791e19b2029447e75d2c7730ff888cc396874685bDaniel Dunbar // Promote additional arguments to variadic methods. 129891e19b2029447e75d2c7730ff888cc396874685bDaniel Dunbar if (Method->isVariadic()) { 129992e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor for (unsigned i = NumNamedArgs; i < NumArgs; ++i) { 130092e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor if (Args[i]->isTypeDependent()) 130192e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor continue; 130292e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor 1303d2d065545ba7b4349ae02afe07f799047443f1a0Jordy Rose ExprResult Arg = DefaultVariadicArgumentPromotion(Args[i], VariadicMethod, 1304d2d065545ba7b4349ae02afe07f799047443f1a0Jordy Rose 0); 1305429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley IsError |= Arg.isInvalid(); 1306429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley Args[i] = Arg.take(); 130792e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor } 130891e19b2029447e75d2c7730ff888cc396874685bDaniel Dunbar } else { 130991e19b2029447e75d2c7730ff888cc396874685bDaniel Dunbar // Check for extra arguments to non-variadic methods. 131091e19b2029447e75d2c7730ff888cc396874685bDaniel Dunbar if (NumArgs != NumNamedArgs) { 13111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Diag(Args[NumNamedArgs]->getLocStart(), 1312fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner diag::err_typecheck_call_too_many_args) 1313ccfa9639f8d09733bcf1c2572c5bd3daba5bd632Eric Christopher << 2 /*method*/ << NumNamedArgs << NumArgs 1314ccfa9639f8d09733bcf1c2572c5bd3daba5bd632Eric Christopher << Method->getSourceRange() 1315fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner << SourceRange(Args[NumNamedArgs]->getLocStart(), 1316fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner Args[NumArgs-1]->getLocEnd()); 131791e19b2029447e75d2c7730ff888cc396874685bDaniel Dunbar } 131891e19b2029447e75d2c7730ff888cc396874685bDaniel Dunbar } 131991e19b2029447e75d2c7730ff888cc396874685bDaniel Dunbar 13202725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor DiagnoseSentinelCalls(Method, lbrac, Args, NumArgs); 132129c3f814b64808c6dac4597b61a50ceecdf141fcJean-Daniel Dupas 132229c3f814b64808c6dac4597b61a50ceecdf141fcJean-Daniel Dupas // Do additional checkings on method. 132329c3f814b64808c6dac4597b61a50ceecdf141fcJean-Daniel Dupas IsError |= CheckObjCMethodCall(Method, lbrac, Args, NumArgs); 132429c3f814b64808c6dac4597b61a50ceecdf141fcJean-Daniel Dupas 1325312531a8cd69c562d5687bd69fd334be99d87320Chris Lattner return IsError; 132685a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner} 132785a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner 1328c737acb8e86564becc5939d681089d1851e6be1aDouglas Gregorbool Sema::isSelfExpr(Expr *receiver) { 1329f2d74cc083e1a83838acf99d2e1ca260d1c54742Fariborz Jahanian // 'self' is objc 'self' in an objc method only. 13304b9c2d235fb9449e249d74f48ecfec601650de93John McCall ObjCMethodDecl *method = 13314b9c2d235fb9449e249d74f48ecfec601650de93John McCall dyn_cast<ObjCMethodDecl>(CurContext->getNonClosureAncestor()); 13324b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (!method) return false; 13334b9c2d235fb9449e249d74f48ecfec601650de93John McCall 1334f85e193739c953358c865005855253af4f68a497John McCall receiver = receiver->IgnoreParenLValueCasts(); 1335f85e193739c953358c865005855253af4f68a497John McCall if (DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(receiver)) 13364b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (DRE->getDecl() == method->getSelfDecl()) 1337c737acb8e86564becc5939d681089d1851e6be1aDouglas Gregor return true; 1338c737acb8e86564becc5939d681089d1851e6be1aDouglas Gregor return false; 13396b9dfd4257b85c388a9e3cd345cf28acb7351006Steve Naroff} 13406b9dfd4257b85c388a9e3cd345cf28acb7351006Steve Naroff 13413c3b7f90a863af43fa63043d396553ecf205351cJohn McCall/// LookupMethodInType - Look up a method in an ObjCObjectType. 13423c3b7f90a863af43fa63043d396553ecf205351cJohn McCallObjCMethodDecl *Sema::LookupMethodInObjectType(Selector sel, QualType type, 13433c3b7f90a863af43fa63043d396553ecf205351cJohn McCall bool isInstance) { 13443c3b7f90a863af43fa63043d396553ecf205351cJohn McCall const ObjCObjectType *objType = type->castAs<ObjCObjectType>(); 13453c3b7f90a863af43fa63043d396553ecf205351cJohn McCall if (ObjCInterfaceDecl *iface = objType->getInterface()) { 13463c3b7f90a863af43fa63043d396553ecf205351cJohn McCall // Look it up in the main interface (and categories, etc.) 13473c3b7f90a863af43fa63043d396553ecf205351cJohn McCall if (ObjCMethodDecl *method = iface->lookupMethod(sel, isInstance)) 13483c3b7f90a863af43fa63043d396553ecf205351cJohn McCall return method; 13493c3b7f90a863af43fa63043d396553ecf205351cJohn McCall 13503c3b7f90a863af43fa63043d396553ecf205351cJohn McCall // Okay, look for "private" methods declared in any 13513c3b7f90a863af43fa63043d396553ecf205351cJohn McCall // @implementations we've seen. 1352e61354b274ec5aa6acf3d15271896ce7596bb123Anna Zaks if (ObjCMethodDecl *method = iface->lookupPrivateMethod(sel, isInstance)) 1353e61354b274ec5aa6acf3d15271896ce7596bb123Anna Zaks return method; 13543c3b7f90a863af43fa63043d396553ecf205351cJohn McCall } 13553c3b7f90a863af43fa63043d396553ecf205351cJohn McCall 13563c3b7f90a863af43fa63043d396553ecf205351cJohn McCall // Check qualifiers. 13573c3b7f90a863af43fa63043d396553ecf205351cJohn McCall for (ObjCObjectType::qual_iterator 13583c3b7f90a863af43fa63043d396553ecf205351cJohn McCall i = objType->qual_begin(), e = objType->qual_end(); i != e; ++i) 13593c3b7f90a863af43fa63043d396553ecf205351cJohn McCall if (ObjCMethodDecl *method = (*i)->lookupMethod(sel, isInstance)) 13603c3b7f90a863af43fa63043d396553ecf205351cJohn McCall return method; 13613c3b7f90a863af43fa63043d396553ecf205351cJohn McCall 13623c3b7f90a863af43fa63043d396553ecf205351cJohn McCall return 0; 13633c3b7f90a863af43fa63043d396553ecf205351cJohn McCall} 13643c3b7f90a863af43fa63043d396553ecf205351cJohn McCall 136561478065fbcafcf5295bb0fb796c9a92f2d861e0Fariborz Jahanian/// LookupMethodInQualifiedType - Lookups up a method in protocol qualifier 136661478065fbcafcf5295bb0fb796c9a92f2d861e0Fariborz Jahanian/// list of a qualified objective pointer type. 136761478065fbcafcf5295bb0fb796c9a92f2d861e0Fariborz JahanianObjCMethodDecl *Sema::LookupMethodInQualifiedType(Selector Sel, 136861478065fbcafcf5295bb0fb796c9a92f2d861e0Fariborz Jahanian const ObjCObjectPointerType *OPT, 136961478065fbcafcf5295bb0fb796c9a92f2d861e0Fariborz Jahanian bool Instance) 137061478065fbcafcf5295bb0fb796c9a92f2d861e0Fariborz Jahanian{ 137161478065fbcafcf5295bb0fb796c9a92f2d861e0Fariborz Jahanian ObjCMethodDecl *MD = 0; 137261478065fbcafcf5295bb0fb796c9a92f2d861e0Fariborz Jahanian for (ObjCObjectPointerType::qual_iterator I = OPT->qual_begin(), 137361478065fbcafcf5295bb0fb796c9a92f2d861e0Fariborz Jahanian E = OPT->qual_end(); I != E; ++I) { 137461478065fbcafcf5295bb0fb796c9a92f2d861e0Fariborz Jahanian ObjCProtocolDecl *PROTO = (*I); 137561478065fbcafcf5295bb0fb796c9a92f2d861e0Fariborz Jahanian if ((MD = PROTO->lookupMethod(Sel, Instance))) { 137661478065fbcafcf5295bb0fb796c9a92f2d861e0Fariborz Jahanian return MD; 137761478065fbcafcf5295bb0fb796c9a92f2d861e0Fariborz Jahanian } 137861478065fbcafcf5295bb0fb796c9a92f2d861e0Fariborz Jahanian } 137961478065fbcafcf5295bb0fb796c9a92f2d861e0Fariborz Jahanian return 0; 138061478065fbcafcf5295bb0fb796c9a92f2d861e0Fariborz Jahanian} 138161478065fbcafcf5295bb0fb796c9a92f2d861e0Fariborz Jahanian 13829879556f250c7b692228e834d7fca8f1cb118bf6Fariborz Jahanianstatic void DiagnoseARCUseOfWeakReceiver(Sema &S, Expr *Receiver) { 13839879556f250c7b692228e834d7fca8f1cb118bf6Fariborz Jahanian if (!Receiver) 1384289677da2d3ef2f015af8b7e41150053891589f7Fariborz Jahanian return; 1385289677da2d3ef2f015af8b7e41150053891589f7Fariborz Jahanian 138631170398278ff9ef08f6b6427ee596e2ca82a790Fariborz Jahanian if (OpaqueValueExpr *OVE = dyn_cast<OpaqueValueExpr>(Receiver)) 138731170398278ff9ef08f6b6427ee596e2ca82a790Fariborz Jahanian Receiver = OVE->getSourceExpr(); 138831170398278ff9ef08f6b6427ee596e2ca82a790Fariborz Jahanian 13899879556f250c7b692228e834d7fca8f1cb118bf6Fariborz Jahanian Expr *RExpr = Receiver->IgnoreParenImpCasts(); 13909879556f250c7b692228e834d7fca8f1cb118bf6Fariborz Jahanian SourceLocation Loc = RExpr->getLocStart(); 13919879556f250c7b692228e834d7fca8f1cb118bf6Fariborz Jahanian QualType T = RExpr->getType(); 139204bec39d61f2b392d798882c9141fecf3ca653c5Jordan Rose const ObjCPropertyDecl *PDecl = 0; 139304bec39d61f2b392d798882c9141fecf3ca653c5Jordan Rose const ObjCMethodDecl *GDecl = 0; 13949879556f250c7b692228e834d7fca8f1cb118bf6Fariborz Jahanian if (PseudoObjectExpr *POE = dyn_cast<PseudoObjectExpr>(RExpr)) { 13959879556f250c7b692228e834d7fca8f1cb118bf6Fariborz Jahanian RExpr = POE->getSyntacticForm(); 13969879556f250c7b692228e834d7fca8f1cb118bf6Fariborz Jahanian if (ObjCPropertyRefExpr *PRE = dyn_cast<ObjCPropertyRefExpr>(RExpr)) { 13979879556f250c7b692228e834d7fca8f1cb118bf6Fariborz Jahanian if (PRE->isImplicitProperty()) { 13989879556f250c7b692228e834d7fca8f1cb118bf6Fariborz Jahanian GDecl = PRE->getImplicitPropertyGetter(); 13999879556f250c7b692228e834d7fca8f1cb118bf6Fariborz Jahanian if (GDecl) { 14009879556f250c7b692228e834d7fca8f1cb118bf6Fariborz Jahanian T = GDecl->getResultType(); 14019879556f250c7b692228e834d7fca8f1cb118bf6Fariborz Jahanian } 14029879556f250c7b692228e834d7fca8f1cb118bf6Fariborz Jahanian } 14039879556f250c7b692228e834d7fca8f1cb118bf6Fariborz Jahanian else { 14049879556f250c7b692228e834d7fca8f1cb118bf6Fariborz Jahanian PDecl = PRE->getExplicitProperty(); 14059879556f250c7b692228e834d7fca8f1cb118bf6Fariborz Jahanian if (PDecl) { 14069879556f250c7b692228e834d7fca8f1cb118bf6Fariborz Jahanian T = PDecl->getType(); 14079879556f250c7b692228e834d7fca8f1cb118bf6Fariborz Jahanian } 14089879556f250c7b692228e834d7fca8f1cb118bf6Fariborz Jahanian } 1409289677da2d3ef2f015af8b7e41150053891589f7Fariborz Jahanian } 14109879556f250c7b692228e834d7fca8f1cb118bf6Fariborz Jahanian } 141131170398278ff9ef08f6b6427ee596e2ca82a790Fariborz Jahanian else if (ObjCMessageExpr *ME = dyn_cast<ObjCMessageExpr>(RExpr)) { 141231170398278ff9ef08f6b6427ee596e2ca82a790Fariborz Jahanian // See if receiver is a method which envokes a synthesized getter 141331170398278ff9ef08f6b6427ee596e2ca82a790Fariborz Jahanian // backing a 'weak' property. 141431170398278ff9ef08f6b6427ee596e2ca82a790Fariborz Jahanian ObjCMethodDecl *Method = ME->getMethodDecl(); 141504bec39d61f2b392d798882c9141fecf3ca653c5Jordan Rose if (Method && Method->getSelector().getNumArgs() == 0) { 141604bec39d61f2b392d798882c9141fecf3ca653c5Jordan Rose PDecl = Method->findPropertyDecl(); 141731170398278ff9ef08f6b6427ee596e2ca82a790Fariborz Jahanian if (PDecl) 141831170398278ff9ef08f6b6427ee596e2ca82a790Fariborz Jahanian T = PDecl->getType(); 141931170398278ff9ef08f6b6427ee596e2ca82a790Fariborz Jahanian } 142031170398278ff9ef08f6b6427ee596e2ca82a790Fariborz Jahanian } 14219879556f250c7b692228e834d7fca8f1cb118bf6Fariborz Jahanian 14223437daad71d8694d4ddd25418751f2763c0f8979Jordan Rose if (T.getObjCLifetime() != Qualifiers::OCL_Weak) { 14233437daad71d8694d4ddd25418751f2763c0f8979Jordan Rose if (!PDecl) 14243437daad71d8694d4ddd25418751f2763c0f8979Jordan Rose return; 14253437daad71d8694d4ddd25418751f2763c0f8979Jordan Rose if (!(PDecl->getPropertyAttributes() & ObjCPropertyDecl::OBJC_PR_weak)) 14263437daad71d8694d4ddd25418751f2763c0f8979Jordan Rose return; 1427289677da2d3ef2f015af8b7e41150053891589f7Fariborz Jahanian } 14283437daad71d8694d4ddd25418751f2763c0f8979Jordan Rose 14293437daad71d8694d4ddd25418751f2763c0f8979Jordan Rose S.Diag(Loc, diag::warn_receiver_is_weak) 14303437daad71d8694d4ddd25418751f2763c0f8979Jordan Rose << ((!PDecl && !GDecl) ? 0 : (PDecl ? 1 : 2)); 14313437daad71d8694d4ddd25418751f2763c0f8979Jordan Rose 14323437daad71d8694d4ddd25418751f2763c0f8979Jordan Rose if (PDecl) 14339879556f250c7b692228e834d7fca8f1cb118bf6Fariborz Jahanian S.Diag(PDecl->getLocation(), diag::note_property_declare); 14343437daad71d8694d4ddd25418751f2763c0f8979Jordan Rose else if (GDecl) 14353437daad71d8694d4ddd25418751f2763c0f8979Jordan Rose S.Diag(GDecl->getLocation(), diag::note_method_declared_at) << GDecl; 14363437daad71d8694d4ddd25418751f2763c0f8979Jordan Rose 14373437daad71d8694d4ddd25418751f2763c0f8979Jordan Rose S.Diag(Loc, diag::note_arc_assign_to_strong); 1438289677da2d3ef2f015af8b7e41150053891589f7Fariborz Jahanian} 1439289677da2d3ef2f015af8b7e41150053891589f7Fariborz Jahanian 14407f81652f97a69ae8b514893a69c0245253687e55Chris Lattner/// HandleExprPropertyRefExpr - Handle foo.bar where foo is a pointer to an 14417f81652f97a69ae8b514893a69c0245253687e55Chris Lattner/// objective C interface. This is a property reference expression. 144260d7b3a319d84d688752be3870615ac0f111fb16John McCallExprResult Sema:: 14437f81652f97a69ae8b514893a69c0245253687e55Chris LattnerHandleExprPropertyRefExpr(const ObjCObjectPointerType *OPT, 14446326e05fe8c2ff92b65b4759a91e45fad5ef886fFariborz Jahanian Expr *BaseExpr, SourceLocation OpLoc, 14456326e05fe8c2ff92b65b4759a91e45fad5ef886fFariborz Jahanian DeclarationName MemberName, 14468ac2d449820fd0df00fcbde5bf82165c1f49854dFariborz Jahanian SourceLocation MemberLoc, 14478ac2d449820fd0df00fcbde5bf82165c1f49854dFariborz Jahanian SourceLocation SuperLoc, QualType SuperType, 14488ac2d449820fd0df00fcbde5bf82165c1f49854dFariborz Jahanian bool Super) { 14497f81652f97a69ae8b514893a69c0245253687e55Chris Lattner const ObjCInterfaceType *IFaceT = OPT->getInterfaceType(); 14507f81652f97a69ae8b514893a69c0245253687e55Chris Lattner ObjCInterfaceDecl *IFace = IFaceT->getDecl(); 1451c470442fe144b93c2877134559d0067b3215289dBenjamin Kramer 1452c1aa40cdc8f42c3a5505ebb54aa54f3e5086b7efBenjamin Kramer if (!MemberName.isIdentifier()) { 1453109ec1b05664e35e710785314c12552307f39a7dDouglas Gregor Diag(MemberLoc, diag::err_invalid_property_name) 1454109ec1b05664e35e710785314c12552307f39a7dDouglas Gregor << MemberName << QualType(OPT, 0); 1455109ec1b05664e35e710785314c12552307f39a7dDouglas Gregor return ExprError(); 1456109ec1b05664e35e710785314c12552307f39a7dDouglas Gregor } 1457c1aa40cdc8f42c3a5505ebb54aa54f3e5086b7efBenjamin Kramer 1458c1aa40cdc8f42c3a5505ebb54aa54f3e5086b7efBenjamin Kramer IdentifierInfo *Member = MemberName.getAsIdentifierInfo(); 1459109ec1b05664e35e710785314c12552307f39a7dDouglas Gregor 1460b3029960632ca8a3248e74770eda64d6c16f7246Douglas Gregor SourceRange BaseRange = Super? SourceRange(SuperLoc) 1461b3029960632ca8a3248e74770eda64d6c16f7246Douglas Gregor : BaseExpr->getSourceRange(); 1462b3029960632ca8a3248e74770eda64d6c16f7246Douglas Gregor if (RequireCompleteType(MemberLoc, OPT->getPointeeType(), 1463d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor diag::err_property_not_found_forward_class, 1464d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor MemberName, BaseRange)) 14658b1aba495744bea7093899a65f08c3987263061cFariborz Jahanian return ExprError(); 1466b3029960632ca8a3248e74770eda64d6c16f7246Douglas Gregor 14677f81652f97a69ae8b514893a69c0245253687e55Chris Lattner // Search for a declared property first. 1468b5b155cb8bd2460693572bab5ce14dabf1a27d2fFariborz Jahanian if (ObjCPropertyDecl *PD = IFace->FindPropertyDeclaration(Member)) { 14697f81652f97a69ae8b514893a69c0245253687e55Chris Lattner // Check whether we can reference this property. 14707f81652f97a69ae8b514893a69c0245253687e55Chris Lattner if (DiagnoseUseOfDecl(PD, MemberLoc)) 14717f81652f97a69ae8b514893a69c0245253687e55Chris Lattner return ExprError(); 14728ac2d449820fd0df00fcbde5bf82165c1f49854dFariborz Jahanian if (Super) 14733c3b7f90a863af43fa63043d396553ecf205351cJohn McCall return Owned(new (Context) ObjCPropertyRefExpr(PD, Context.PseudoObjectTy, 1474f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall VK_LValue, OK_ObjCProperty, 14758ac2d449820fd0df00fcbde5bf82165c1f49854dFariborz Jahanian MemberLoc, 14768ac2d449820fd0df00fcbde5bf82165c1f49854dFariborz Jahanian SuperLoc, SuperType)); 14778ac2d449820fd0df00fcbde5bf82165c1f49854dFariborz Jahanian else 14783c3b7f90a863af43fa63043d396553ecf205351cJohn McCall return Owned(new (Context) ObjCPropertyRefExpr(PD, Context.PseudoObjectTy, 1479f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall VK_LValue, OK_ObjCProperty, 14808ac2d449820fd0df00fcbde5bf82165c1f49854dFariborz Jahanian MemberLoc, BaseExpr)); 14817f81652f97a69ae8b514893a69c0245253687e55Chris Lattner } 14827f81652f97a69ae8b514893a69c0245253687e55Chris Lattner // Check protocols on qualified interfaces. 14837f81652f97a69ae8b514893a69c0245253687e55Chris Lattner for (ObjCObjectPointerType::qual_iterator I = OPT->qual_begin(), 14847f81652f97a69ae8b514893a69c0245253687e55Chris Lattner E = OPT->qual_end(); I != E; ++I) 14857f81652f97a69ae8b514893a69c0245253687e55Chris Lattner if (ObjCPropertyDecl *PD = (*I)->FindPropertyDeclaration(Member)) { 14867f81652f97a69ae8b514893a69c0245253687e55Chris Lattner // Check whether we can reference this property. 14877f81652f97a69ae8b514893a69c0245253687e55Chris Lattner if (DiagnoseUseOfDecl(PD, MemberLoc)) 14887f81652f97a69ae8b514893a69c0245253687e55Chris Lattner return ExprError(); 1489289677da2d3ef2f015af8b7e41150053891589f7Fariborz Jahanian 14908ac2d449820fd0df00fcbde5bf82165c1f49854dFariborz Jahanian if (Super) 14913c3b7f90a863af43fa63043d396553ecf205351cJohn McCall return Owned(new (Context) ObjCPropertyRefExpr(PD, 14923c3b7f90a863af43fa63043d396553ecf205351cJohn McCall Context.PseudoObjectTy, 1493f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall VK_LValue, 1494f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall OK_ObjCProperty, 1495f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall MemberLoc, 1496f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall SuperLoc, SuperType)); 14978ac2d449820fd0df00fcbde5bf82165c1f49854dFariborz Jahanian else 14983c3b7f90a863af43fa63043d396553ecf205351cJohn McCall return Owned(new (Context) ObjCPropertyRefExpr(PD, 14993c3b7f90a863af43fa63043d396553ecf205351cJohn McCall Context.PseudoObjectTy, 1500f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall VK_LValue, 1501f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall OK_ObjCProperty, 15028ac2d449820fd0df00fcbde5bf82165c1f49854dFariborz Jahanian MemberLoc, 15038ac2d449820fd0df00fcbde5bf82165c1f49854dFariborz Jahanian BaseExpr)); 15047f81652f97a69ae8b514893a69c0245253687e55Chris Lattner } 15057f81652f97a69ae8b514893a69c0245253687e55Chris Lattner // If that failed, look for an "implicit" property by seeing if the nullary 15067f81652f97a69ae8b514893a69c0245253687e55Chris Lattner // selector is implemented. 15077f81652f97a69ae8b514893a69c0245253687e55Chris Lattner 15087f81652f97a69ae8b514893a69c0245253687e55Chris Lattner // FIXME: The logic for looking up nullary and unary selectors should be 15097f81652f97a69ae8b514893a69c0245253687e55Chris Lattner // shared with the code in ActOnInstanceMessage. 15107f81652f97a69ae8b514893a69c0245253687e55Chris Lattner 15117f81652f97a69ae8b514893a69c0245253687e55Chris Lattner Selector Sel = PP.getSelectorTable().getNullarySelector(Member); 15127f81652f97a69ae8b514893a69c0245253687e55Chris Lattner ObjCMethodDecl *Getter = IFace->lookupInstanceMethod(Sel); 151327569b0f3e1b27f609a2e104b39bad077850e210Fariborz Jahanian 151427569b0f3e1b27f609a2e104b39bad077850e210Fariborz Jahanian // May be founf in property's qualified list. 151527569b0f3e1b27f609a2e104b39bad077850e210Fariborz Jahanian if (!Getter) 151627569b0f3e1b27f609a2e104b39bad077850e210Fariborz Jahanian Getter = LookupMethodInQualifiedType(Sel, OPT, true); 15177f81652f97a69ae8b514893a69c0245253687e55Chris Lattner 15187f81652f97a69ae8b514893a69c0245253687e55Chris Lattner // If this reference is in an @implementation, check for 'private' methods. 15197f81652f97a69ae8b514893a69c0245253687e55Chris Lattner if (!Getter) 152074b2756bc1f1f5f7c189996fe7e4cd3efef70263Fariborz Jahanian Getter = IFace->lookupPrivateMethod(Sel); 15217f81652f97a69ae8b514893a69c0245253687e55Chris Lattner 15227f81652f97a69ae8b514893a69c0245253687e55Chris Lattner if (Getter) { 15237f81652f97a69ae8b514893a69c0245253687e55Chris Lattner // Check if we can reference this property. 15247f81652f97a69ae8b514893a69c0245253687e55Chris Lattner if (DiagnoseUseOfDecl(Getter, MemberLoc)) 15257f81652f97a69ae8b514893a69c0245253687e55Chris Lattner return ExprError(); 15267f81652f97a69ae8b514893a69c0245253687e55Chris Lattner } 15277f81652f97a69ae8b514893a69c0245253687e55Chris Lattner // If we found a getter then this may be a valid dot-reference, we 15287f81652f97a69ae8b514893a69c0245253687e55Chris Lattner // will look for the matching setter, in case it is needed. 15297f81652f97a69ae8b514893a69c0245253687e55Chris Lattner Selector SetterSel = 15307f81652f97a69ae8b514893a69c0245253687e55Chris Lattner SelectorTable::constructSetterName(PP.getIdentifierTable(), 15317f81652f97a69ae8b514893a69c0245253687e55Chris Lattner PP.getSelectorTable(), Member); 15327f81652f97a69ae8b514893a69c0245253687e55Chris Lattner ObjCMethodDecl *Setter = IFace->lookupInstanceMethod(SetterSel); 1533b5b155cb8bd2460693572bab5ce14dabf1a27d2fFariborz Jahanian 153427569b0f3e1b27f609a2e104b39bad077850e210Fariborz Jahanian // May be founf in property's qualified list. 153527569b0f3e1b27f609a2e104b39bad077850e210Fariborz Jahanian if (!Setter) 153627569b0f3e1b27f609a2e104b39bad077850e210Fariborz Jahanian Setter = LookupMethodInQualifiedType(SetterSel, OPT, true); 153727569b0f3e1b27f609a2e104b39bad077850e210Fariborz Jahanian 15387f81652f97a69ae8b514893a69c0245253687e55Chris Lattner if (!Setter) { 15397f81652f97a69ae8b514893a69c0245253687e55Chris Lattner // If this reference is in an @implementation, also check for 'private' 15407f81652f97a69ae8b514893a69c0245253687e55Chris Lattner // methods. 154174b2756bc1f1f5f7c189996fe7e4cd3efef70263Fariborz Jahanian Setter = IFace->lookupPrivateMethod(SetterSel); 15427f81652f97a69ae8b514893a69c0245253687e55Chris Lattner } 154327569b0f3e1b27f609a2e104b39bad077850e210Fariborz Jahanian 15447f81652f97a69ae8b514893a69c0245253687e55Chris Lattner if (Setter && DiagnoseUseOfDecl(Setter, MemberLoc)) 15457f81652f97a69ae8b514893a69c0245253687e55Chris Lattner return ExprError(); 15467f81652f97a69ae8b514893a69c0245253687e55Chris Lattner 154799130e5a02e93282cb393d2cba0d3dffc10abc01Fariborz Jahanian if (Getter || Setter) { 15488ac2d449820fd0df00fcbde5bf82165c1f49854dFariborz Jahanian if (Super) 154912f78a6741a4cb3d904340f8d3d2714568b50e7aJohn McCall return Owned(new (Context) ObjCPropertyRefExpr(Getter, Setter, 15503c3b7f90a863af43fa63043d396553ecf205351cJohn McCall Context.PseudoObjectTy, 15513c3b7f90a863af43fa63043d396553ecf205351cJohn McCall VK_LValue, OK_ObjCProperty, 155212f78a6741a4cb3d904340f8d3d2714568b50e7aJohn McCall MemberLoc, 155312f78a6741a4cb3d904340f8d3d2714568b50e7aJohn McCall SuperLoc, SuperType)); 15548ac2d449820fd0df00fcbde5bf82165c1f49854dFariborz Jahanian else 155512f78a6741a4cb3d904340f8d3d2714568b50e7aJohn McCall return Owned(new (Context) ObjCPropertyRefExpr(Getter, Setter, 15563c3b7f90a863af43fa63043d396553ecf205351cJohn McCall Context.PseudoObjectTy, 15573c3b7f90a863af43fa63043d396553ecf205351cJohn McCall VK_LValue, OK_ObjCProperty, 155812f78a6741a4cb3d904340f8d3d2714568b50e7aJohn McCall MemberLoc, BaseExpr)); 15598ac2d449820fd0df00fcbde5bf82165c1f49854dFariborz Jahanian 15607f81652f97a69ae8b514893a69c0245253687e55Chris Lattner } 15617f81652f97a69ae8b514893a69c0245253687e55Chris Lattner 15627f81652f97a69ae8b514893a69c0245253687e55Chris Lattner // Attempt to correct for typos in property names. 15632f4d88f4418afafbd0b22ce0f79cdead6f3a6f99Kaelyn Uhrain DeclFilterCCC<ObjCPropertyDecl> Validator; 15642f4d88f4418afafbd0b22ce0f79cdead6f3a6f99Kaelyn Uhrain if (TypoCorrection Corrected = CorrectTypo( 1565d8bba9c15230d2b1b3893e272106aa79efc50251Douglas Gregor DeclarationNameInfo(MemberName, MemberLoc), LookupOrdinaryName, NULL, 156616e46dd0c284296cea819dfbf67942ecef02894dKaelyn Uhrain NULL, Validator, IFace, false, OPT)) { 15672f4d88f4418afafbd0b22ce0f79cdead6f3a6f99Kaelyn Uhrain ObjCPropertyDecl *Property = 15682f4d88f4418afafbd0b22ce0f79cdead6f3a6f99Kaelyn Uhrain Corrected.getCorrectionDeclAs<ObjCPropertyDecl>(); 1569d8bba9c15230d2b1b3893e272106aa79efc50251Douglas Gregor DeclarationName TypoResult = Corrected.getCorrection(); 15707f81652f97a69ae8b514893a69c0245253687e55Chris Lattner Diag(MemberLoc, diag::err_property_not_found_suggest) 1571b9d4fc1f54924a7b242fb763192a40c19fa6103dChris Lattner << MemberName << QualType(OPT, 0) << TypoResult 1572b9d4fc1f54924a7b242fb763192a40c19fa6103dChris Lattner << FixItHint::CreateReplacement(MemberLoc, TypoResult.getAsString()); 15737f81652f97a69ae8b514893a69c0245253687e55Chris Lattner Diag(Property->getLocation(), diag::note_previous_decl) 15747f81652f97a69ae8b514893a69c0245253687e55Chris Lattner << Property->getDeclName(); 15756326e05fe8c2ff92b65b4759a91e45fad5ef886fFariborz Jahanian return HandleExprPropertyRefExpr(OPT, BaseExpr, OpLoc, 15766326e05fe8c2ff92b65b4759a91e45fad5ef886fFariborz Jahanian TypoResult, MemberLoc, 15778ac2d449820fd0df00fcbde5bf82165c1f49854dFariborz Jahanian SuperLoc, SuperType, Super); 15787f81652f97a69ae8b514893a69c0245253687e55Chris Lattner } 157941aadbc530f071fe5ccbfc2560899a4a2e74c057Fariborz Jahanian ObjCInterfaceDecl *ClassDeclared; 158041aadbc530f071fe5ccbfc2560899a4a2e74c057Fariborz Jahanian if (ObjCIvarDecl *Ivar = 158141aadbc530f071fe5ccbfc2560899a4a2e74c057Fariborz Jahanian IFace->lookupInstanceVariable(Member, ClassDeclared)) { 158241aadbc530f071fe5ccbfc2560899a4a2e74c057Fariborz Jahanian QualType T = Ivar->getType(); 158341aadbc530f071fe5ccbfc2560899a4a2e74c057Fariborz Jahanian if (const ObjCObjectPointerType * OBJPT = 158441aadbc530f071fe5ccbfc2560899a4a2e74c057Fariborz Jahanian T->getAsObjCInterfacePointerType()) { 1585b3029960632ca8a3248e74770eda64d6c16f7246Douglas Gregor if (RequireCompleteType(MemberLoc, OBJPT->getPointeeType(), 1586d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor diag::err_property_not_as_forward_class, 1587d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor MemberName, BaseExpr)) 1588b3029960632ca8a3248e74770eda64d6c16f7246Douglas Gregor return ExprError(); 158941aadbc530f071fe5ccbfc2560899a4a2e74c057Fariborz Jahanian } 15906326e05fe8c2ff92b65b4759a91e45fad5ef886fFariborz Jahanian Diag(MemberLoc, 15916326e05fe8c2ff92b65b4759a91e45fad5ef886fFariborz Jahanian diag::err_ivar_access_using_property_syntax_suggest) 15926326e05fe8c2ff92b65b4759a91e45fad5ef886fFariborz Jahanian << MemberName << QualType(OPT, 0) << Ivar->getDeclName() 15936326e05fe8c2ff92b65b4759a91e45fad5ef886fFariborz Jahanian << FixItHint::CreateReplacement(OpLoc, "->"); 15946326e05fe8c2ff92b65b4759a91e45fad5ef886fFariborz Jahanian return ExprError(); 159541aadbc530f071fe5ccbfc2560899a4a2e74c057Fariborz Jahanian } 1596b9d4fc1f54924a7b242fb763192a40c19fa6103dChris Lattner 15977f81652f97a69ae8b514893a69c0245253687e55Chris Lattner Diag(MemberLoc, diag::err_property_not_found) 15987f81652f97a69ae8b514893a69c0245253687e55Chris Lattner << MemberName << QualType(OPT, 0); 159999130e5a02e93282cb393d2cba0d3dffc10abc01Fariborz Jahanian if (Setter) 16007f81652f97a69ae8b514893a69c0245253687e55Chris Lattner Diag(Setter->getLocation(), diag::note_getter_unavailable) 160199130e5a02e93282cb393d2cba0d3dffc10abc01Fariborz Jahanian << MemberName << BaseExpr->getSourceRange(); 16027f81652f97a69ae8b514893a69c0245253687e55Chris Lattner return ExprError(); 16037f81652f97a69ae8b514893a69c0245253687e55Chris Lattner} 16047f81652f97a69ae8b514893a69c0245253687e55Chris Lattner 16057f81652f97a69ae8b514893a69c0245253687e55Chris Lattner 16067f81652f97a69ae8b514893a69c0245253687e55Chris Lattner 160760d7b3a319d84d688752be3870615ac0f111fb16John McCallExprResult Sema:: 1608eb483eb3ee80300f15d6d13573d82493c2194461Chris LattnerActOnClassPropertyRefExpr(IdentifierInfo &receiverName, 1609eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner IdentifierInfo &propertyName, 1610eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner SourceLocation receiverNameLoc, 1611eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner SourceLocation propertyNameLoc) { 16121eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1613f06cdae9c68dfc4191fbf6b9e5ea0fd748488d88Douglas Gregor IdentifierInfo *receiverNamePtr = &receiverName; 1614c83c6874e3bf1432d3df5e8d3530f8561ff5441fDouglas Gregor ObjCInterfaceDecl *IFace = getObjCInterfaceDecl(receiverNamePtr, 1615c83c6874e3bf1432d3df5e8d3530f8561ff5441fDouglas Gregor receiverNameLoc); 1616926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor 1617926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor bool IsSuper = false; 1618eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner if (IFace == 0) { 1619eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner // If the "receiver" is 'super' in a method, handle it as an expression-like 1620eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner // property reference. 162126743b20e4a8c2a986e6453f0c38beba0afef633John McCall if (receiverNamePtr->isStr("super")) { 1622926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor IsSuper = true; 1623926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor 1624b942cb24a060435b18fef5b43eb33d77afc0d03aEli Friedman if (ObjCMethodDecl *CurMethod = tryCaptureObjCSelf(receiverNameLoc)) { 1625eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner if (CurMethod->isInstanceMethod()) { 16266fc9e7ad3576dcbee3028a42ef5dac931df8754cFariborz Jahanian ObjCInterfaceDecl *Super = 16276fc9e7ad3576dcbee3028a42ef5dac931df8754cFariborz Jahanian CurMethod->getClassInterface()->getSuperClass(); 16286fc9e7ad3576dcbee3028a42ef5dac931df8754cFariborz Jahanian if (!Super) { 16296fc9e7ad3576dcbee3028a42ef5dac931df8754cFariborz Jahanian // The current class does not have a superclass. 16306fc9e7ad3576dcbee3028a42ef5dac931df8754cFariborz Jahanian Diag(receiverNameLoc, diag::error_root_class_cannot_use_super) 16316fc9e7ad3576dcbee3028a42ef5dac931df8754cFariborz Jahanian << CurMethod->getClassInterface()->getIdentifier(); 16326fc9e7ad3576dcbee3028a42ef5dac931df8754cFariborz Jahanian return ExprError(); 16336fc9e7ad3576dcbee3028a42ef5dac931df8754cFariborz Jahanian } 16346fc9e7ad3576dcbee3028a42ef5dac931df8754cFariborz Jahanian QualType T = Context.getObjCInterfaceType(Super); 1635eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner T = Context.getObjCObjectPointerType(T); 1636eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner 1637eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner return HandleExprPropertyRefExpr(T->getAsObjCInterfacePointerType(), 16386326e05fe8c2ff92b65b4759a91e45fad5ef886fFariborz Jahanian /*BaseExpr*/0, 16396326e05fe8c2ff92b65b4759a91e45fad5ef886fFariborz Jahanian SourceLocation()/*OpLoc*/, 16406326e05fe8c2ff92b65b4759a91e45fad5ef886fFariborz Jahanian &propertyName, 16418ac2d449820fd0df00fcbde5bf82165c1f49854dFariborz Jahanian propertyNameLoc, 16428ac2d449820fd0df00fcbde5bf82165c1f49854dFariborz Jahanian receiverNameLoc, T, true); 1643eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner } 1644eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner 1645eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner // Otherwise, if this is a class method, try dispatching to our 1646eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner // superclass. 1647eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner IFace = CurMethod->getClassInterface()->getSuperClass(); 1648eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner } 164926743b20e4a8c2a986e6453f0c38beba0afef633John McCall } 1650eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner 1651eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner if (IFace == 0) { 1652eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner Diag(receiverNameLoc, diag::err_expected_ident_or_lparen); 1653eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner return ExprError(); 1654eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner } 16558149a5786def747af783a9e3c22714bb7ab42b9cFariborz Jahanian } 16561eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1657eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner // Search for a declared property first. 165861f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff Selector Sel = PP.getSelectorTable().getNullarySelector(&propertyName); 165917945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis ObjCMethodDecl *Getter = IFace->lookupClassMethod(Sel); 166061f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff 166161f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff // If this reference is in an @implementation, check for 'private' methods. 166261f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff if (!Getter) 166361f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff if (ObjCMethodDecl *CurMeth = getCurMethodDecl()) 166461f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff if (ObjCInterfaceDecl *ClassDecl = CurMeth->getClassInterface()) 166587018775ed689d0a67357cf767747166044b3a27Argyrios Kyrtzidis if (ObjCImplementationDecl *ImpDecl = ClassDecl->getImplementation()) 166617945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis Getter = ImpDecl->getClassMethod(Sel); 166761f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff 166861f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff if (Getter) { 166961f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff // FIXME: refactor/share with ActOnMemberReference(). 167061f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff // Check if we can reference this property. 167161f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff if (DiagnoseUseOfDecl(Getter, propertyNameLoc)) 167261f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff return ExprError(); 167361f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff } 16741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 167561f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff // Look for the matching setter, in case it is needed. 16761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Selector SetterSel = 16771eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SelectorTable::constructSetterName(PP.getIdentifierTable(), 1678fdc92b7877535e6264fe43cfbdc8f01e9b224f81Steve Naroff PP.getSelectorTable(), &propertyName); 16791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 168017945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis ObjCMethodDecl *Setter = IFace->lookupClassMethod(SetterSel); 168161f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff if (!Setter) { 168261f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff // If this reference is in an @implementation, also check for 'private' 168361f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff // methods. 168461f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff if (ObjCMethodDecl *CurMeth = getCurMethodDecl()) 168561f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff if (ObjCInterfaceDecl *ClassDecl = CurMeth->getClassInterface()) 168687018775ed689d0a67357cf767747166044b3a27Argyrios Kyrtzidis if (ObjCImplementationDecl *ImpDecl = ClassDecl->getImplementation()) 168717945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis Setter = ImpDecl->getClassMethod(SetterSel); 168861f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff } 168961f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff // Look through local category implementations associated with the class. 16901cb35dd4840d21cec58648361180d5688446a9caArgyrios Kyrtzidis if (!Setter) 16911cb35dd4840d21cec58648361180d5688446a9caArgyrios Kyrtzidis Setter = IFace->getCategoryClassMethod(SetterSel); 169261f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff 169361f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff if (Setter && DiagnoseUseOfDecl(Setter, propertyNameLoc)) 169461f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff return ExprError(); 169561f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff 169661f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff if (Getter || Setter) { 1697926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor if (IsSuper) 1698926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor return Owned(new (Context) ObjCPropertyRefExpr(Getter, Setter, 16993c3b7f90a863af43fa63043d396553ecf205351cJohn McCall Context.PseudoObjectTy, 17003c3b7f90a863af43fa63043d396553ecf205351cJohn McCall VK_LValue, OK_ObjCProperty, 1701926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor propertyNameLoc, 1702926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor receiverNameLoc, 1703926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor Context.getObjCInterfaceType(IFace))); 1704926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor 170512f78a6741a4cb3d904340f8d3d2714568b50e7aJohn McCall return Owned(new (Context) ObjCPropertyRefExpr(Getter, Setter, 17063c3b7f90a863af43fa63043d396553ecf205351cJohn McCall Context.PseudoObjectTy, 17073c3b7f90a863af43fa63043d396553ecf205351cJohn McCall VK_LValue, OK_ObjCProperty, 170812f78a6741a4cb3d904340f8d3d2714568b50e7aJohn McCall propertyNameLoc, 170912f78a6741a4cb3d904340f8d3d2714568b50e7aJohn McCall receiverNameLoc, IFace)); 171061f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff } 171161f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff return ExprError(Diag(propertyNameLoc, diag::err_property_not_found) 171261f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff << &propertyName << Context.getObjCInterfaceType(IFace)); 171361f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff} 171461f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff 17152f4d88f4418afafbd0b22ce0f79cdead6f3a6f99Kaelyn Uhrainnamespace { 17162f4d88f4418afafbd0b22ce0f79cdead6f3a6f99Kaelyn Uhrain 17172f4d88f4418afafbd0b22ce0f79cdead6f3a6f99Kaelyn Uhrainclass ObjCInterfaceOrSuperCCC : public CorrectionCandidateCallback { 17182f4d88f4418afafbd0b22ce0f79cdead6f3a6f99Kaelyn Uhrain public: 17192f4d88f4418afafbd0b22ce0f79cdead6f3a6f99Kaelyn Uhrain ObjCInterfaceOrSuperCCC(ObjCMethodDecl *Method) { 17202f4d88f4418afafbd0b22ce0f79cdead6f3a6f99Kaelyn Uhrain // Determine whether "super" is acceptable in the current context. 17212f4d88f4418afafbd0b22ce0f79cdead6f3a6f99Kaelyn Uhrain if (Method && Method->getClassInterface()) 17222f4d88f4418afafbd0b22ce0f79cdead6f3a6f99Kaelyn Uhrain WantObjCSuper = Method->getClassInterface()->getSuperClass(); 17232f4d88f4418afafbd0b22ce0f79cdead6f3a6f99Kaelyn Uhrain } 17242f4d88f4418afafbd0b22ce0f79cdead6f3a6f99Kaelyn Uhrain 17252f4d88f4418afafbd0b22ce0f79cdead6f3a6f99Kaelyn Uhrain virtual bool ValidateCandidate(const TypoCorrection &candidate) { 17262f4d88f4418afafbd0b22ce0f79cdead6f3a6f99Kaelyn Uhrain return candidate.getCorrectionDeclAs<ObjCInterfaceDecl>() || 17272f4d88f4418afafbd0b22ce0f79cdead6f3a6f99Kaelyn Uhrain candidate.isKeyword("super"); 17282f4d88f4418afafbd0b22ce0f79cdead6f3a6f99Kaelyn Uhrain } 17292f4d88f4418afafbd0b22ce0f79cdead6f3a6f99Kaelyn Uhrain}; 17302f4d88f4418afafbd0b22ce0f79cdead6f3a6f99Kaelyn Uhrain 17312f4d88f4418afafbd0b22ce0f79cdead6f3a6f99Kaelyn Uhrain} 17322f4d88f4418afafbd0b22ce0f79cdead6f3a6f99Kaelyn Uhrain 173347bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas GregorSema::ObjCMessageKind Sema::getObjCMessageKind(Scope *S, 17341569f95831a8c99e9f664137bf8f40e47ee3d90fDouglas Gregor IdentifierInfo *Name, 173547bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor SourceLocation NameLoc, 173647bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor bool IsSuper, 17371569f95831a8c99e9f664137bf8f40e47ee3d90fDouglas Gregor bool HasTrailingDot, 1738b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall ParsedType &ReceiverType) { 1739b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall ReceiverType = ParsedType(); 17401569f95831a8c99e9f664137bf8f40e47ee3d90fDouglas Gregor 174147bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor // If the identifier is "super" and there is no trailing dot, we're 174295f4292cc526c629fead321c7fcfd4fe0f3bc66eDouglas Gregor // messaging super. If the identifier is "super" and there is a 174395f4292cc526c629fead321c7fcfd4fe0f3bc66eDouglas Gregor // trailing dot, it's an instance message. 174495f4292cc526c629fead321c7fcfd4fe0f3bc66eDouglas Gregor if (IsSuper && S->isInObjcMethodScope()) 174595f4292cc526c629fead321c7fcfd4fe0f3bc66eDouglas Gregor return HasTrailingDot? ObjCInstanceMessage : ObjCSuperMessage; 174647bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor 174747bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor LookupResult Result(*this, Name, NameLoc, LookupOrdinaryName); 174847bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor LookupName(Result, S); 174947bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor 175047bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor switch (Result.getResultKind()) { 175147bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor case LookupResult::NotFound: 1752ed46442adea496dfb01dbbe53ace583d5614e79aDouglas Gregor // Normal name lookup didn't find anything. If we're in an 1753ed46442adea496dfb01dbbe53ace583d5614e79aDouglas Gregor // Objective-C method, look for ivars. If we find one, we're done! 175495f4292cc526c629fead321c7fcfd4fe0f3bc66eDouglas Gregor // FIXME: This is a hack. Ivar lookup should be part of normal 175595f4292cc526c629fead321c7fcfd4fe0f3bc66eDouglas Gregor // lookup. 1756ed46442adea496dfb01dbbe53ace583d5614e79aDouglas Gregor if (ObjCMethodDecl *Method = getCurMethodDecl()) { 1757ccc9e767f21cb9be55c98f9c7cb319134410184bArgyrios Kyrtzidis if (!Method->getClassInterface()) { 1758ccc9e767f21cb9be55c98f9c7cb319134410184bArgyrios Kyrtzidis // Fall back: let the parser try to parse it as an instance message. 1759ccc9e767f21cb9be55c98f9c7cb319134410184bArgyrios Kyrtzidis return ObjCInstanceMessage; 1760ccc9e767f21cb9be55c98f9c7cb319134410184bArgyrios Kyrtzidis } 1761ccc9e767f21cb9be55c98f9c7cb319134410184bArgyrios Kyrtzidis 1762ed46442adea496dfb01dbbe53ace583d5614e79aDouglas Gregor ObjCInterfaceDecl *ClassDeclared; 1763ed46442adea496dfb01dbbe53ace583d5614e79aDouglas Gregor if (Method->getClassInterface()->lookupInstanceVariable(Name, 1764ed46442adea496dfb01dbbe53ace583d5614e79aDouglas Gregor ClassDeclared)) 1765ed46442adea496dfb01dbbe53ace583d5614e79aDouglas Gregor return ObjCInstanceMessage; 1766ed46442adea496dfb01dbbe53ace583d5614e79aDouglas Gregor } 176795f4292cc526c629fead321c7fcfd4fe0f3bc66eDouglas Gregor 176847bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor // Break out; we'll perform typo correction below. 176947bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor break; 177047bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor 177147bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor case LookupResult::NotFoundInCurrentInstantiation: 177247bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor case LookupResult::FoundOverloaded: 177347bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor case LookupResult::FoundUnresolvedValue: 177447bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor case LookupResult::Ambiguous: 177547bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor Result.suppressDiagnostics(); 177647bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor return ObjCInstanceMessage; 177747bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor 177847bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor case LookupResult::Found: { 17798348de33e92b8278a07a7573eb7ad3c166c02b0dFariborz Jahanian // If the identifier is a class or not, and there is a trailing dot, 17808348de33e92b8278a07a7573eb7ad3c166c02b0dFariborz Jahanian // it's an instance message. 17818348de33e92b8278a07a7573eb7ad3c166c02b0dFariborz Jahanian if (HasTrailingDot) 17828348de33e92b8278a07a7573eb7ad3c166c02b0dFariborz Jahanian return ObjCInstanceMessage; 178347bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor // We found something. If it's a type, then we have a class 178447bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor // message. Otherwise, it's an instance message. 178547bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor NamedDecl *ND = Result.getFoundDecl(); 17861569f95831a8c99e9f664137bf8f40e47ee3d90fDouglas Gregor QualType T; 17871569f95831a8c99e9f664137bf8f40e47ee3d90fDouglas Gregor if (ObjCInterfaceDecl *Class = dyn_cast<ObjCInterfaceDecl>(ND)) 17881569f95831a8c99e9f664137bf8f40e47ee3d90fDouglas Gregor T = Context.getObjCInterfaceType(Class); 17891569f95831a8c99e9f664137bf8f40e47ee3d90fDouglas Gregor else if (TypeDecl *Type = dyn_cast<TypeDecl>(ND)) 17901569f95831a8c99e9f664137bf8f40e47ee3d90fDouglas Gregor T = Context.getTypeDeclType(Type); 17911569f95831a8c99e9f664137bf8f40e47ee3d90fDouglas Gregor else 17921569f95831a8c99e9f664137bf8f40e47ee3d90fDouglas Gregor return ObjCInstanceMessage; 17931569f95831a8c99e9f664137bf8f40e47ee3d90fDouglas Gregor 17941569f95831a8c99e9f664137bf8f40e47ee3d90fDouglas Gregor // We have a class message, and T is the type we're 17951569f95831a8c99e9f664137bf8f40e47ee3d90fDouglas Gregor // messaging. Build source-location information for it. 17961569f95831a8c99e9f664137bf8f40e47ee3d90fDouglas Gregor TypeSourceInfo *TSInfo = Context.getTrivialTypeSourceInfo(T, NameLoc); 1797b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall ReceiverType = CreateParsedType(T, TSInfo); 17981569f95831a8c99e9f664137bf8f40e47ee3d90fDouglas Gregor return ObjCClassMessage; 179947bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor } 180047bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor } 180147bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor 18022f4d88f4418afafbd0b22ce0f79cdead6f3a6f99Kaelyn Uhrain ObjCInterfaceOrSuperCCC Validator(getCurMethodDecl()); 1803d8bba9c15230d2b1b3893e272106aa79efc50251Douglas Gregor if (TypoCorrection Corrected = CorrectTypo(Result.getLookupNameInfo(), 1804d8bba9c15230d2b1b3893e272106aa79efc50251Douglas Gregor Result.getLookupKind(), S, NULL, 180516e46dd0c284296cea819dfbf67942ecef02894dKaelyn Uhrain Validator)) { 18062f4d88f4418afafbd0b22ce0f79cdead6f3a6f99Kaelyn Uhrain if (Corrected.isKeyword()) { 18072f4d88f4418afafbd0b22ce0f79cdead6f3a6f99Kaelyn Uhrain // If we've found the keyword "super" (the only keyword that would be 18082f4d88f4418afafbd0b22ce0f79cdead6f3a6f99Kaelyn Uhrain // returned by CorrectTypo), this is a send to super. 180947bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor Diag(NameLoc, diag::err_unknown_receiver_suggest) 1810d8bba9c15230d2b1b3893e272106aa79efc50251Douglas Gregor << Name << Corrected.getCorrection() 1811aaf87162c5fbfbf320072da3a8e83392e1bbf041Douglas Gregor << FixItHint::CreateReplacement(SourceRange(NameLoc), "super"); 1812aaf87162c5fbfbf320072da3a8e83392e1bbf041Douglas Gregor return ObjCSuperMessage; 18132f4d88f4418afafbd0b22ce0f79cdead6f3a6f99Kaelyn Uhrain } else if (ObjCInterfaceDecl *Class = 18142f4d88f4418afafbd0b22ce0f79cdead6f3a6f99Kaelyn Uhrain Corrected.getCorrectionDeclAs<ObjCInterfaceDecl>()) { 18152f4d88f4418afafbd0b22ce0f79cdead6f3a6f99Kaelyn Uhrain // If we found a declaration, correct when it refers to an Objective-C 18162f4d88f4418afafbd0b22ce0f79cdead6f3a6f99Kaelyn Uhrain // class. 18172f4d88f4418afafbd0b22ce0f79cdead6f3a6f99Kaelyn Uhrain Diag(NameLoc, diag::err_unknown_receiver_suggest) 18182f4d88f4418afafbd0b22ce0f79cdead6f3a6f99Kaelyn Uhrain << Name << Corrected.getCorrection() 18192f4d88f4418afafbd0b22ce0f79cdead6f3a6f99Kaelyn Uhrain << FixItHint::CreateReplacement(SourceRange(NameLoc), 18202f4d88f4418afafbd0b22ce0f79cdead6f3a6f99Kaelyn Uhrain Class->getNameAsString()); 18212f4d88f4418afafbd0b22ce0f79cdead6f3a6f99Kaelyn Uhrain Diag(Class->getLocation(), diag::note_previous_decl) 18222f4d88f4418afafbd0b22ce0f79cdead6f3a6f99Kaelyn Uhrain << Corrected.getCorrection(); 18232f4d88f4418afafbd0b22ce0f79cdead6f3a6f99Kaelyn Uhrain 18242f4d88f4418afafbd0b22ce0f79cdead6f3a6f99Kaelyn Uhrain QualType T = Context.getObjCInterfaceType(Class); 18252f4d88f4418afafbd0b22ce0f79cdead6f3a6f99Kaelyn Uhrain TypeSourceInfo *TSInfo = Context.getTrivialTypeSourceInfo(T, NameLoc); 18262f4d88f4418afafbd0b22ce0f79cdead6f3a6f99Kaelyn Uhrain ReceiverType = CreateParsedType(T, TSInfo); 18272f4d88f4418afafbd0b22ce0f79cdead6f3a6f99Kaelyn Uhrain return ObjCClassMessage; 182847bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor } 182947bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor } 183047bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor 183147bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor // Fall back: let the parser try to parse it as an instance message. 183247bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor return ObjCInstanceMessage; 183347bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor} 183461f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff 183560d7b3a319d84d688752be3870615ac0f111fb16John McCallExprResult Sema::ActOnSuperMessage(Scope *S, 18360fbda68b50ce17d7ad36ef7a5ed77518a5cd272eDouglas Gregor SourceLocation SuperLoc, 18370fbda68b50ce17d7ad36ef7a5ed77518a5cd272eDouglas Gregor Selector Sel, 18380fbda68b50ce17d7ad36ef7a5ed77518a5cd272eDouglas Gregor SourceLocation LBracLoc, 1839951376242c076c3f62dd78bf672909fc011991dbArgyrios Kyrtzidis ArrayRef<SourceLocation> SelectorLocs, 18400fbda68b50ce17d7ad36ef7a5ed77518a5cd272eDouglas Gregor SourceLocation RBracLoc, 18410fbda68b50ce17d7ad36ef7a5ed77518a5cd272eDouglas Gregor MultiExprArg Args) { 18422725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor // Determine whether we are inside a method or not. 1843b942cb24a060435b18fef5b43eb33d77afc0d03aEli Friedman ObjCMethodDecl *Method = tryCaptureObjCSelf(SuperLoc); 1844f95861a4ab6bbd6a975ed079dd70eb1cc22f4467Douglas Gregor if (!Method) { 1845f95861a4ab6bbd6a975ed079dd70eb1cc22f4467Douglas Gregor Diag(SuperLoc, diag::err_invalid_receiver_to_message_super); 1846f95861a4ab6bbd6a975ed079dd70eb1cc22f4467Douglas Gregor return ExprError(); 1847f95861a4ab6bbd6a975ed079dd70eb1cc22f4467Douglas Gregor } 18482725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor 1849f95861a4ab6bbd6a975ed079dd70eb1cc22f4467Douglas Gregor ObjCInterfaceDecl *Class = Method->getClassInterface(); 1850f95861a4ab6bbd6a975ed079dd70eb1cc22f4467Douglas Gregor if (!Class) { 1851f95861a4ab6bbd6a975ed079dd70eb1cc22f4467Douglas Gregor Diag(SuperLoc, diag::error_no_super_class_message) 1852f95861a4ab6bbd6a975ed079dd70eb1cc22f4467Douglas Gregor << Method->getDeclName(); 18532725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor return ExprError(); 185415faee19fdb9017dd6d08a690427b18c3b062c2dChris Lattner } 18552725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor 1856f95861a4ab6bbd6a975ed079dd70eb1cc22f4467Douglas Gregor ObjCInterfaceDecl *Super = Class->getSuperClass(); 18572725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor if (!Super) { 1858f95861a4ab6bbd6a975ed079dd70eb1cc22f4467Douglas Gregor // The current class does not have a superclass. 1859e00909a6e997ec33d9baa5312e9d27b52a3da770Ted Kremenek Diag(SuperLoc, diag::error_root_class_cannot_use_super) 1860e00909a6e997ec33d9baa5312e9d27b52a3da770Ted Kremenek << Class->getIdentifier(); 18612725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor return ExprError(); 18622725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor } 18632725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor 1864f95861a4ab6bbd6a975ed079dd70eb1cc22f4467Douglas Gregor // We are in a method whose class has a superclass, so 'super' 1865f95861a4ab6bbd6a975ed079dd70eb1cc22f4467Douglas Gregor // is acting as a keyword. 1866535a5d001b2035a7aa68ee368fbe44ec90e33740Jordan Rose if (Method->getSelector() == Sel) 1867535a5d001b2035a7aa68ee368fbe44ec90e33740Jordan Rose getCurFunction()->ObjCShouldCallSuper = false; 18689a1ecf0522ccb7a45577f856150c15af0ee1df2aNico Weber 1869535a5d001b2035a7aa68ee368fbe44ec90e33740Jordan Rose if (Method->isInstanceMethod()) { 1870f95861a4ab6bbd6a975ed079dd70eb1cc22f4467Douglas Gregor // Since we are in an instance method, this is an instance 1871f95861a4ab6bbd6a975ed079dd70eb1cc22f4467Douglas Gregor // message to the superclass instance. 1872f95861a4ab6bbd6a975ed079dd70eb1cc22f4467Douglas Gregor QualType SuperTy = Context.getObjCInterfaceType(Super); 1873f95861a4ab6bbd6a975ed079dd70eb1cc22f4467Douglas Gregor SuperTy = Context.getObjCObjectPointerType(SuperTy); 18749ae2f076ca5ab1feb3ba95629099ec2319833701John McCall return BuildInstanceMessage(0, SuperTy, SuperLoc, 1875f40f0d5a382395e0301d7dcbeaa2b8e90b8973b1Argyrios Kyrtzidis Sel, /*Method=*/0, 18763fe198bf0d6118c7b080c17c3bb28d7c84e458b9Benjamin Kramer LBracLoc, SelectorLocs, RBracLoc, Args); 18772725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor } 1878f95861a4ab6bbd6a975ed079dd70eb1cc22f4467Douglas Gregor 1879f95861a4ab6bbd6a975ed079dd70eb1cc22f4467Douglas Gregor // Since we are in a class method, this is a class message to 1880f95861a4ab6bbd6a975ed079dd70eb1cc22f4467Douglas Gregor // the superclass. 1881f95861a4ab6bbd6a975ed079dd70eb1cc22f4467Douglas Gregor return BuildClassMessage(/*ReceiverTypeInfo=*/0, 1882f95861a4ab6bbd6a975ed079dd70eb1cc22f4467Douglas Gregor Context.getObjCInterfaceType(Super), 1883f40f0d5a382395e0301d7dcbeaa2b8e90b8973b1Argyrios Kyrtzidis SuperLoc, Sel, /*Method=*/0, 18843fe198bf0d6118c7b080c17c3bb28d7c84e458b9Benjamin Kramer LBracLoc, SelectorLocs, RBracLoc, Args); 18852725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor} 18862725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor 1887746f5bcbfde5b25269169c63c66492311673b67dArgyrios Kyrtzidis 1888746f5bcbfde5b25269169c63c66492311673b67dArgyrios KyrtzidisExprResult Sema::BuildClassMessageImplicit(QualType ReceiverType, 1889746f5bcbfde5b25269169c63c66492311673b67dArgyrios Kyrtzidis bool isSuperReceiver, 1890746f5bcbfde5b25269169c63c66492311673b67dArgyrios Kyrtzidis SourceLocation Loc, 1891746f5bcbfde5b25269169c63c66492311673b67dArgyrios Kyrtzidis Selector Sel, 1892746f5bcbfde5b25269169c63c66492311673b67dArgyrios Kyrtzidis ObjCMethodDecl *Method, 1893746f5bcbfde5b25269169c63c66492311673b67dArgyrios Kyrtzidis MultiExprArg Args) { 1894746f5bcbfde5b25269169c63c66492311673b67dArgyrios Kyrtzidis TypeSourceInfo *receiverTypeInfo = 0; 1895746f5bcbfde5b25269169c63c66492311673b67dArgyrios Kyrtzidis if (!ReceiverType.isNull()) 1896746f5bcbfde5b25269169c63c66492311673b67dArgyrios Kyrtzidis receiverTypeInfo = Context.getTrivialTypeSourceInfo(ReceiverType); 1897746f5bcbfde5b25269169c63c66492311673b67dArgyrios Kyrtzidis 1898746f5bcbfde5b25269169c63c66492311673b67dArgyrios Kyrtzidis return BuildClassMessage(receiverTypeInfo, ReceiverType, 1899746f5bcbfde5b25269169c63c66492311673b67dArgyrios Kyrtzidis /*SuperLoc=*/isSuperReceiver ? Loc : SourceLocation(), 1900746f5bcbfde5b25269169c63c66492311673b67dArgyrios Kyrtzidis Sel, Method, Loc, Loc, Loc, Args, 1901746f5bcbfde5b25269169c63c66492311673b67dArgyrios Kyrtzidis /*isImplicit=*/true); 1902746f5bcbfde5b25269169c63c66492311673b67dArgyrios Kyrtzidis 1903746f5bcbfde5b25269169c63c66492311673b67dArgyrios Kyrtzidis} 1904746f5bcbfde5b25269169c63c66492311673b67dArgyrios Kyrtzidis 1905ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenekstatic void applyCocoaAPICheck(Sema &S, const ObjCMessageExpr *Msg, 1906ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek unsigned DiagID, 1907ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek bool (*refactor)(const ObjCMessageExpr *, 1908ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek const NSAPI &, edit::Commit &)) { 1909ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek SourceLocation MsgLoc = Msg->getExprLoc(); 1910ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (S.Diags.getDiagnosticLevel(DiagID, MsgLoc) == DiagnosticsEngine::Ignored) 1911ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return; 1912ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 1913ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek SourceManager &SM = S.SourceMgr; 1914ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek edit::Commit ECommit(SM, S.LangOpts); 1915ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (refactor(Msg,*S.NSAPIObj, ECommit)) { 1916ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek DiagnosticBuilder Builder = S.Diag(MsgLoc, DiagID) 1917ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek << Msg->getSelector() << Msg->getSourceRange(); 1918ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // FIXME: Don't emit diagnostic at all if fixits are non-commitable. 1919ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (!ECommit.isCommitable()) 1920ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return; 1921ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek for (edit::Commit::edit_iterator 1922ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek I = ECommit.edit_begin(), E = ECommit.edit_end(); I != E; ++I) { 1923ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek const edit::Commit::Edit &Edit = *I; 1924ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek switch (Edit.Kind) { 1925ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek case edit::Commit::Act_Insert: 1926ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Builder.AddFixItHint(FixItHint::CreateInsertion(Edit.OrigLoc, 1927ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Edit.Text, 1928ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Edit.BeforePrev)); 1929ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek break; 1930ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek case edit::Commit::Act_InsertFromRange: 1931ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Builder.AddFixItHint( 1932ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek FixItHint::CreateInsertionFromRange(Edit.OrigLoc, 1933ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Edit.getInsertFromRange(SM), 1934ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Edit.BeforePrev)); 1935ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek break; 1936ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek case edit::Commit::Act_Remove: 1937ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Builder.AddFixItHint(FixItHint::CreateRemoval(Edit.getFileRange(SM))); 1938ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek break; 1939ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 1940ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 1941ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 1942ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek} 1943ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 1944ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenekstatic void checkCocoaAPI(Sema &S, const ObjCMessageExpr *Msg) { 1945ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek applyCocoaAPICheck(S, Msg, diag::warn_objc_redundant_literal_use, 1946ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek edit::rewriteObjCRedundantCallWithLiteral); 1947ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek} 1948ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 19492725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// \brief Build an Objective-C class message expression. 19502725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// 19512725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// This routine takes care of both normal class messages and 19522725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// class messages to the superclass. 19532725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// 19542725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// \param ReceiverTypeInfo Type source information that describes the 19552725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// receiver of this message. This may be NULL, in which case we are 19562725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// sending to the superclass and \p SuperLoc must be a valid source 19572725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// location. 19582725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor 19592725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// \param ReceiverType The type of the object receiving the 19602725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// message. When \p ReceiverTypeInfo is non-NULL, this is the same 19612725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// type as that refers to. For a superclass send, this is the type of 19622725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// the superclass. 19632725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// 19642725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// \param SuperLoc The location of the "super" keyword in a 19652725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// superclass message. 19662725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// 19672725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// \param Sel The selector to which the message is being sent. 19682725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// 1969f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor/// \param Method The method that this class message is invoking, if 1970f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor/// already known. 1971f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor/// 19722725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// \param LBracLoc The location of the opening square bracket ']'. 19732725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// 1974efce31f51d6e7e31e125f96c20f6cdab3ead0a47James Dennett/// \param RBracLoc The location of the closing square bracket ']'. 19752725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// 1976efce31f51d6e7e31e125f96c20f6cdab3ead0a47James Dennett/// \param ArgsIn The message arguments. 197760d7b3a319d84d688752be3870615ac0f111fb16John McCallExprResult Sema::BuildClassMessage(TypeSourceInfo *ReceiverTypeInfo, 19780fbda68b50ce17d7ad36ef7a5ed77518a5cd272eDouglas Gregor QualType ReceiverType, 19790fbda68b50ce17d7ad36ef7a5ed77518a5cd272eDouglas Gregor SourceLocation SuperLoc, 19800fbda68b50ce17d7ad36ef7a5ed77518a5cd272eDouglas Gregor Selector Sel, 19810fbda68b50ce17d7ad36ef7a5ed77518a5cd272eDouglas Gregor ObjCMethodDecl *Method, 19820fbda68b50ce17d7ad36ef7a5ed77518a5cd272eDouglas Gregor SourceLocation LBracLoc, 1983951376242c076c3f62dd78bf672909fc011991dbArgyrios Kyrtzidis ArrayRef<SourceLocation> SelectorLocs, 19840fbda68b50ce17d7ad36ef7a5ed77518a5cd272eDouglas Gregor SourceLocation RBracLoc, 1985746f5bcbfde5b25269169c63c66492311673b67dArgyrios Kyrtzidis MultiExprArg ArgsIn, 1986746f5bcbfde5b25269169c63c66492311673b67dArgyrios Kyrtzidis bool isImplicit) { 19870fbda68b50ce17d7ad36ef7a5ed77518a5cd272eDouglas Gregor SourceLocation Loc = SuperLoc.isValid()? SuperLoc 19889497a73ad0d54859edbf48beb93ebb19a7ae50c9Douglas Gregor : ReceiverTypeInfo->getTypeLoc().getSourceRange().getBegin(); 19890fbda68b50ce17d7ad36ef7a5ed77518a5cd272eDouglas Gregor if (LBracLoc.isInvalid()) { 19900fbda68b50ce17d7ad36ef7a5ed77518a5cd272eDouglas Gregor Diag(Loc, diag::err_missing_open_square_message_send) 19910fbda68b50ce17d7ad36ef7a5ed77518a5cd272eDouglas Gregor << FixItHint::CreateInsertion(Loc, "["); 19920fbda68b50ce17d7ad36ef7a5ed77518a5cd272eDouglas Gregor LBracLoc = Loc; 19930fbda68b50ce17d7ad36ef7a5ed77518a5cd272eDouglas Gregor } 19940fbda68b50ce17d7ad36ef7a5ed77518a5cd272eDouglas Gregor 199592e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor if (ReceiverType->isDependentType()) { 199692e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor // If the receiver type is dependent, we can't type-check anything 199792e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor // at this point. Build a dependent expression. 199892e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor unsigned NumArgs = ArgsIn.size(); 19995354e77e60e82828c7c2361f5c688c2667ab59ccBenjamin Kramer Expr **Args = ArgsIn.data(); 200092e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor assert(SuperLoc.isInvalid() && "Message to super with dependent type"); 2001f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall return Owned(ObjCMessageExpr::Create(Context, ReceiverType, 2002f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall VK_RValue, LBracLoc, ReceiverTypeInfo, 2003951376242c076c3f62dd78bf672909fc011991dbArgyrios Kyrtzidis Sel, SelectorLocs, /*Method=*/0, 2004746f5bcbfde5b25269169c63c66492311673b67dArgyrios Kyrtzidis makeArrayRef(Args, NumArgs),RBracLoc, 2005746f5bcbfde5b25269169c63c66492311673b67dArgyrios Kyrtzidis isImplicit)); 200692e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor } 200715faee19fdb9017dd6d08a690427b18c3b062c2dChris Lattner 20082725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor // Find the class to which we are sending this message. 20092725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor ObjCInterfaceDecl *Class = 0; 2010c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall const ObjCObjectType *ClassType = ReceiverType->getAs<ObjCObjectType>(); 2011c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall if (!ClassType || !(Class = ClassType->getInterface())) { 20122725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor Diag(Loc, diag::err_invalid_receiver_class_message) 20132725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor << ReceiverType; 20142725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor return ExprError(); 20157c778f1c549a8ae95d50a819fd537df78da16426Steve Naroff } 20162725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor assert(Class && "We don't know which class we're messaging?"); 201743bcdb2d4d8390aec89e75f4d232b1fb218a59c5Fariborz Jahanian // objc++ diagnoses during typename annotation. 20184e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!getLangOpts().CPlusPlus) 201943bcdb2d4d8390aec89e75f4d232b1fb218a59c5Fariborz Jahanian (void)DiagnoseUseOfDecl(Class, Loc); 20202725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor // Find the method we are messaging. 2021f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor if (!Method) { 2022b3029960632ca8a3248e74770eda64d6c16f7246Douglas Gregor SourceRange TypeRange 2023b3029960632ca8a3248e74770eda64d6c16f7246Douglas Gregor = SuperLoc.isValid()? SourceRange(SuperLoc) 2024b3029960632ca8a3248e74770eda64d6c16f7246Douglas Gregor : ReceiverTypeInfo->getTypeLoc().getSourceRange(); 2025d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor if (RequireCompleteType(Loc, Context.getObjCInterfaceType(Class), 20264e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie (getLangOpts().ObjCAutoRefCount 2027d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor ? diag::err_arc_receiver_forward_class 2028d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor : diag::warn_receiver_forward_class), 2029d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor TypeRange)) { 2030f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor // A forward class used in messaging is treated as a 'Class' 2031f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor Method = LookupFactoryMethodInGlobalPool(Sel, 2032f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor SourceRange(LBracLoc, RBracLoc)); 20334e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (Method && !getLangOpts().ObjCAutoRefCount) 2034f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor Diag(Method->getLocation(), diag::note_method_sent_forward_class) 2035f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor << Method->getDeclName(); 2036f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor } 2037f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor if (!Method) 2038f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor Method = Class->lookupClassMethod(Sel); 20391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2040f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor // If we have an implementation in scope, check "private" methods. 2041f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor if (!Method) 2042e61354b274ec5aa6acf3d15271896ce7596bb123Anna Zaks Method = Class->lookupPrivateClassMethod(Sel); 20437c778f1c549a8ae95d50a819fd537df78da16426Steve Naroff 2044f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor if (Method && DiagnoseUseOfDecl(Method, Loc)) 2045f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor return ExprError(); 2046f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor } 20471eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 20482725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor // Check the argument types and determine the result type. 20492725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor QualType ReturnType; 2050f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall ExprValueKind VK = VK_RValue; 2051f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall 20522725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor unsigned NumArgs = ArgsIn.size(); 20535354e77e60e82828c7c2361f5c688c2667ab59ccBenjamin Kramer Expr **Args = ArgsIn.data(); 2054376c43223ee29334685250c59fdb11e4b3c594fbFariborz Jahanian if (CheckMessageArgumentTypes(ReceiverType, Args, NumArgs, Sel, SelectorLocs, 2055376c43223ee29334685250c59fdb11e4b3c594fbFariborz Jahanian Method, true, 2056926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor SuperLoc.isValid(), LBracLoc, RBracLoc, 2057926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor ReturnType, VK)) 20582725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor return ExprError(); 20594df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek 2060483dd2f55ee53bc765123ead3428aa4ad2682cf3Douglas Gregor if (Method && !Method->getResultType()->isVoidType() && 2061483dd2f55ee53bc765123ead3428aa4ad2682cf3Douglas Gregor RequireCompleteType(LBracLoc, Method->getResultType(), 2062483dd2f55ee53bc765123ead3428aa4ad2682cf3Douglas Gregor diag::err_illegal_message_expr_incomplete_type)) 2063483dd2f55ee53bc765123ead3428aa4ad2682cf3Douglas Gregor return ExprError(); 2064483dd2f55ee53bc765123ead3428aa4ad2682cf3Douglas Gregor 20652725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor // Construct the appropriate ObjCMessageExpr. 2066ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ObjCMessageExpr *Result; 20672725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor if (SuperLoc.isValid()) 2068f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall Result = ObjCMessageExpr::Create(Context, ReturnType, VK, LBracLoc, 20692d6b0e94db30c0e2754d270753c6f75478e451bfDouglas Gregor SuperLoc, /*IsInstanceSuper=*/false, 2070951376242c076c3f62dd78bf672909fc011991dbArgyrios Kyrtzidis ReceiverType, Sel, SelectorLocs, 20718d9ed7980405e91a12e33338a78fb99620adf553Argyrios Kyrtzidis Method, makeArrayRef(Args, NumArgs), 2072746f5bcbfde5b25269169c63c66492311673b67dArgyrios Kyrtzidis RBracLoc, isImplicit); 2073ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek else { 2074f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall Result = ObjCMessageExpr::Create(Context, ReturnType, VK, LBracLoc, 2075951376242c076c3f62dd78bf672909fc011991dbArgyrios Kyrtzidis ReceiverTypeInfo, Sel, SelectorLocs, 20768d9ed7980405e91a12e33338a78fb99620adf553Argyrios Kyrtzidis Method, makeArrayRef(Args, NumArgs), 2077746f5bcbfde5b25269169c63c66492311673b67dArgyrios Kyrtzidis RBracLoc, isImplicit); 2078ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (!isImplicit) 2079ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek checkCocoaAPI(*this, Result); 2080ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 20812d6b0e94db30c0e2754d270753c6f75478e451bfDouglas Gregor return MaybeBindToTemporary(Result); 208285a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner} 208385a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner 20842725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor// ActOnClassMessage - used for both unary and keyword messages. 208585a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner// ArgExprs is optional - if it is present, the number of expressions 208685a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner// is obtained from Sel.getNumArgs(). 208760d7b3a319d84d688752be3870615ac0f111fb16John McCallExprResult Sema::ActOnClassMessage(Scope *S, 208877328d1bb92c2c46bc3e4badc4b4b97c517903b7Douglas Gregor ParsedType Receiver, 208977328d1bb92c2c46bc3e4badc4b4b97c517903b7Douglas Gregor Selector Sel, 209077328d1bb92c2c46bc3e4badc4b4b97c517903b7Douglas Gregor SourceLocation LBracLoc, 2091951376242c076c3f62dd78bf672909fc011991dbArgyrios Kyrtzidis ArrayRef<SourceLocation> SelectorLocs, 209277328d1bb92c2c46bc3e4badc4b4b97c517903b7Douglas Gregor SourceLocation RBracLoc, 209377328d1bb92c2c46bc3e4badc4b4b97c517903b7Douglas Gregor MultiExprArg Args) { 20942725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor TypeSourceInfo *ReceiverTypeInfo; 20952725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor QualType ReceiverType = GetTypeFromParser(Receiver, &ReceiverTypeInfo); 20962725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor if (ReceiverType.isNull()) 20972725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor return ExprError(); 20981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 20991eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 21002725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor if (!ReceiverTypeInfo) 21012725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor ReceiverTypeInfo = Context.getTrivialTypeSourceInfo(ReceiverType, LBracLoc); 21021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 21032725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor return BuildClassMessage(ReceiverTypeInfo, ReceiverType, 2104f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor /*SuperLoc=*/SourceLocation(), Sel, /*Method=*/0, 21053fe198bf0d6118c7b080c17c3bb28d7c84e458b9Benjamin Kramer LBracLoc, SelectorLocs, RBracLoc, Args); 21062725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor} 210787d3ef08d892df8264bd51adb6ddd4a22422cd29Steve Naroff 2108746f5bcbfde5b25269169c63c66492311673b67dArgyrios KyrtzidisExprResult Sema::BuildInstanceMessageImplicit(Expr *Receiver, 2109746f5bcbfde5b25269169c63c66492311673b67dArgyrios Kyrtzidis QualType ReceiverType, 2110746f5bcbfde5b25269169c63c66492311673b67dArgyrios Kyrtzidis SourceLocation Loc, 2111746f5bcbfde5b25269169c63c66492311673b67dArgyrios Kyrtzidis Selector Sel, 2112746f5bcbfde5b25269169c63c66492311673b67dArgyrios Kyrtzidis ObjCMethodDecl *Method, 2113746f5bcbfde5b25269169c63c66492311673b67dArgyrios Kyrtzidis MultiExprArg Args) { 2114746f5bcbfde5b25269169c63c66492311673b67dArgyrios Kyrtzidis return BuildInstanceMessage(Receiver, ReceiverType, 2115746f5bcbfde5b25269169c63c66492311673b67dArgyrios Kyrtzidis /*SuperLoc=*/!Receiver ? Loc : SourceLocation(), 2116746f5bcbfde5b25269169c63c66492311673b67dArgyrios Kyrtzidis Sel, Method, Loc, Loc, Loc, Args, 2117746f5bcbfde5b25269169c63c66492311673b67dArgyrios Kyrtzidis /*isImplicit=*/true); 2118746f5bcbfde5b25269169c63c66492311673b67dArgyrios Kyrtzidis} 2119746f5bcbfde5b25269169c63c66492311673b67dArgyrios Kyrtzidis 21202725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// \brief Build an Objective-C instance message expression. 21212725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// 21222725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// This routine takes care of both normal instance messages and 21232725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// instance messages to the superclass instance. 21242725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// 21252725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// \param Receiver The expression that computes the object that will 21262725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// receive this message. This may be empty, in which case we are 21272725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// sending to the superclass instance and \p SuperLoc must be a valid 21282725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// source location. 21292725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// 21302725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// \param ReceiverType The (static) type of the object receiving the 21312725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// message. When a \p Receiver expression is provided, this is the 21322725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// same type as that expression. For a superclass instance send, this 21332725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// is a pointer to the type of the superclass. 21342725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// 21352725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// \param SuperLoc The location of the "super" keyword in a 21362725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// superclass instance message. 21372725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// 21382725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// \param Sel The selector to which the message is being sent. 21392725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// 2140f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor/// \param Method The method that this instance message is invoking, if 2141f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor/// already known. 2142f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor/// 21432725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// \param LBracLoc The location of the opening square bracket ']'. 21442725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// 2145efce31f51d6e7e31e125f96c20f6cdab3ead0a47James Dennett/// \param RBracLoc The location of the closing square bracket ']'. 21462725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// 2147efce31f51d6e7e31e125f96c20f6cdab3ead0a47James Dennett/// \param ArgsIn The message arguments. 214860d7b3a319d84d688752be3870615ac0f111fb16John McCallExprResult Sema::BuildInstanceMessage(Expr *Receiver, 2149f40f0d5a382395e0301d7dcbeaa2b8e90b8973b1Argyrios Kyrtzidis QualType ReceiverType, 2150f40f0d5a382395e0301d7dcbeaa2b8e90b8973b1Argyrios Kyrtzidis SourceLocation SuperLoc, 2151f40f0d5a382395e0301d7dcbeaa2b8e90b8973b1Argyrios Kyrtzidis Selector Sel, 2152f40f0d5a382395e0301d7dcbeaa2b8e90b8973b1Argyrios Kyrtzidis ObjCMethodDecl *Method, 2153f40f0d5a382395e0301d7dcbeaa2b8e90b8973b1Argyrios Kyrtzidis SourceLocation LBracLoc, 2154951376242c076c3f62dd78bf672909fc011991dbArgyrios Kyrtzidis ArrayRef<SourceLocation> SelectorLocs, 2155f40f0d5a382395e0301d7dcbeaa2b8e90b8973b1Argyrios Kyrtzidis SourceLocation RBracLoc, 2156746f5bcbfde5b25269169c63c66492311673b67dArgyrios Kyrtzidis MultiExprArg ArgsIn, 2157746f5bcbfde5b25269169c63c66492311673b67dArgyrios Kyrtzidis bool isImplicit) { 21580fbda68b50ce17d7ad36ef7a5ed77518a5cd272eDouglas Gregor // The location of the receiver. 21590fbda68b50ce17d7ad36ef7a5ed77518a5cd272eDouglas Gregor SourceLocation Loc = SuperLoc.isValid()? SuperLoc : Receiver->getLocStart(); 21600fbda68b50ce17d7ad36ef7a5ed77518a5cd272eDouglas Gregor 21610fbda68b50ce17d7ad36ef7a5ed77518a5cd272eDouglas Gregor if (LBracLoc.isInvalid()) { 21620fbda68b50ce17d7ad36ef7a5ed77518a5cd272eDouglas Gregor Diag(Loc, diag::err_missing_open_square_message_send) 21630fbda68b50ce17d7ad36ef7a5ed77518a5cd272eDouglas Gregor << FixItHint::CreateInsertion(Loc, "["); 21640fbda68b50ce17d7ad36ef7a5ed77518a5cd272eDouglas Gregor LBracLoc = Loc; 21650fbda68b50ce17d7ad36ef7a5ed77518a5cd272eDouglas Gregor } 21660fbda68b50ce17d7ad36ef7a5ed77518a5cd272eDouglas Gregor 21672725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor // If we have a receiver expression, perform appropriate promotions 21682725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor // and determine receiver type. 21692725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor if (Receiver) { 21705acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall if (Receiver->hasPlaceholderType()) { 2171f1d1ca5b2b40e66d927c2abd16d8baa21af6911fDouglas Gregor ExprResult Result; 2172f1d1ca5b2b40e66d927c2abd16d8baa21af6911fDouglas Gregor if (Receiver->getType() == Context.UnknownAnyTy) 2173f1d1ca5b2b40e66d927c2abd16d8baa21af6911fDouglas Gregor Result = forceUnknownAnyToType(Receiver, Context.getObjCIdType()); 2174f1d1ca5b2b40e66d927c2abd16d8baa21af6911fDouglas Gregor else 2175f1d1ca5b2b40e66d927c2abd16d8baa21af6911fDouglas Gregor Result = CheckPlaceholderExpr(Receiver); 2176f1d1ca5b2b40e66d927c2abd16d8baa21af6911fDouglas Gregor if (Result.isInvalid()) return ExprError(); 2177f1d1ca5b2b40e66d927c2abd16d8baa21af6911fDouglas Gregor Receiver = Result.take(); 21785acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall } 21795acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall 218092e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor if (Receiver->isTypeDependent()) { 218192e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor // If the receiver is type-dependent, we can't type-check anything 218292e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor // at this point. Build a dependent expression. 218392e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor unsigned NumArgs = ArgsIn.size(); 21845354e77e60e82828c7c2361f5c688c2667ab59ccBenjamin Kramer Expr **Args = ArgsIn.data(); 218592e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor assert(SuperLoc.isInvalid() && "Message to super with dependent type"); 218692e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor return Owned(ObjCMessageExpr::Create(Context, Context.DependentTy, 2187f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall VK_RValue, LBracLoc, Receiver, Sel, 2188951376242c076c3f62dd78bf672909fc011991dbArgyrios Kyrtzidis SelectorLocs, /*Method=*/0, 21898d9ed7980405e91a12e33338a78fb99620adf553Argyrios Kyrtzidis makeArrayRef(Args, NumArgs), 2190746f5bcbfde5b25269169c63c66492311673b67dArgyrios Kyrtzidis RBracLoc, isImplicit)); 219192e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor } 219292e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor 21932725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor // If necessary, apply function/array conversion to the receiver. 21942725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor // C99 6.7.5.3p[7,8]. 2195429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley ExprResult Result = DefaultFunctionArrayLvalueConversion(Receiver); 2196429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if (Result.isInvalid()) 2197429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley return ExprError(); 2198429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley Receiver = Result.take(); 21992725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor ReceiverType = Receiver->getType(); 22002fbe92cc2464c77825209df9a262d9d13e5ba64cJohn McCall 22012fbe92cc2464c77825209df9a262d9d13e5ba64cJohn McCall // If the receiver is an ObjC pointer, a block pointer, or an 22022fbe92cc2464c77825209df9a262d9d13e5ba64cJohn McCall // __attribute__((NSObject)) pointer, we don't need to do any 22032fbe92cc2464c77825209df9a262d9d13e5ba64cJohn McCall // special conversion in order to look up a receiver. 22042fbe92cc2464c77825209df9a262d9d13e5ba64cJohn McCall if (ReceiverType->isObjCRetainableType()) { 22052fbe92cc2464c77825209df9a262d9d13e5ba64cJohn McCall // do nothing 22062fbe92cc2464c77825209df9a262d9d13e5ba64cJohn McCall } else if (!getLangOpts().ObjCAutoRefCount && 22072fbe92cc2464c77825209df9a262d9d13e5ba64cJohn McCall !Context.getObjCIdType().isNull() && 22082fbe92cc2464c77825209df9a262d9d13e5ba64cJohn McCall (ReceiverType->isPointerType() || 22092fbe92cc2464c77825209df9a262d9d13e5ba64cJohn McCall ReceiverType->isIntegerType())) { 22102fbe92cc2464c77825209df9a262d9d13e5ba64cJohn McCall // Implicitly convert integers and pointers to 'id' but emit a warning. 22112fbe92cc2464c77825209df9a262d9d13e5ba64cJohn McCall // But not in ARC. 22122fbe92cc2464c77825209df9a262d9d13e5ba64cJohn McCall Diag(Loc, diag::warn_bad_receiver_type) 22132fbe92cc2464c77825209df9a262d9d13e5ba64cJohn McCall << ReceiverType 22142fbe92cc2464c77825209df9a262d9d13e5ba64cJohn McCall << Receiver->getSourceRange(); 22152fbe92cc2464c77825209df9a262d9d13e5ba64cJohn McCall if (ReceiverType->isPointerType()) { 22162fbe92cc2464c77825209df9a262d9d13e5ba64cJohn McCall Receiver = ImpCastExprToType(Receiver, Context.getObjCIdType(), 22172fbe92cc2464c77825209df9a262d9d13e5ba64cJohn McCall CK_CPointerToObjCPointerCast).take(); 22182fbe92cc2464c77825209df9a262d9d13e5ba64cJohn McCall } else { 22192fbe92cc2464c77825209df9a262d9d13e5ba64cJohn McCall // TODO: specialized warning on null receivers? 22202fbe92cc2464c77825209df9a262d9d13e5ba64cJohn McCall bool IsNull = Receiver->isNullPointerConstant(Context, 22212fbe92cc2464c77825209df9a262d9d13e5ba64cJohn McCall Expr::NPC_ValueDependentIsNull); 22222fbe92cc2464c77825209df9a262d9d13e5ba64cJohn McCall CastKind Kind = IsNull ? CK_NullToPointer : CK_IntegralToPointer; 22232fbe92cc2464c77825209df9a262d9d13e5ba64cJohn McCall Receiver = ImpCastExprToType(Receiver, Context.getObjCIdType(), 22242fbe92cc2464c77825209df9a262d9d13e5ba64cJohn McCall Kind).take(); 22252fbe92cc2464c77825209df9a262d9d13e5ba64cJohn McCall } 22262fbe92cc2464c77825209df9a262d9d13e5ba64cJohn McCall ReceiverType = Receiver->getType(); 22272fbe92cc2464c77825209df9a262d9d13e5ba64cJohn McCall } else if (getLangOpts().CPlusPlus) { 22282fbe92cc2464c77825209df9a262d9d13e5ba64cJohn McCall ExprResult result = PerformContextuallyConvertToObjCPointer(Receiver); 22292fbe92cc2464c77825209df9a262d9d13e5ba64cJohn McCall if (result.isUsable()) { 22302fbe92cc2464c77825209df9a262d9d13e5ba64cJohn McCall Receiver = result.take(); 22312fbe92cc2464c77825209df9a262d9d13e5ba64cJohn McCall ReceiverType = Receiver->getType(); 22322fbe92cc2464c77825209df9a262d9d13e5ba64cJohn McCall } 22332fbe92cc2464c77825209df9a262d9d13e5ba64cJohn McCall } 22342725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor } 223504badcf84c8d504d8491c7c7e29b58f52cb16640Douglas Gregor 22362fbe92cc2464c77825209df9a262d9d13e5ba64cJohn McCall // There's a somewhat weird interaction here where we assume that we 22372fbe92cc2464c77825209df9a262d9d13e5ba64cJohn McCall // won't actually have a method unless we also don't need to do some 22382fbe92cc2464c77825209df9a262d9d13e5ba64cJohn McCall // of the more detailed type-checking on the receiver. 22392fbe92cc2464c77825209df9a262d9d13e5ba64cJohn McCall 2240f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor if (!Method) { 2241f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor // Handle messages to id. 2242ba551983016ee3eac5421255d2ebe6723e61befbFariborz Jahanian bool receiverIsId = ReceiverType->isObjCIdType(); 22436b308f6dc7d8f1581c52095f435c0e1284b111d8Fariborz Jahanian if (receiverIsId || ReceiverType->isBlockPointerType() || 2244f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor (Receiver && Context.isObjCNSObjectType(Receiver->getType()))) { 2245f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor Method = LookupInstanceMethodInGlobalPool(Sel, 22466b308f6dc7d8f1581c52095f435c0e1284b111d8Fariborz Jahanian SourceRange(LBracLoc, RBracLoc), 22476b308f6dc7d8f1581c52095f435c0e1284b111d8Fariborz Jahanian receiverIsId); 2248f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor if (!Method) 22492725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor Method = LookupFactoryMethodInGlobalPool(Sel, 2250d2d065545ba7b4349ae02afe07f799047443f1a0Jordy Rose SourceRange(LBracLoc,RBracLoc), 22516b308f6dc7d8f1581c52095f435c0e1284b111d8Fariborz Jahanian receiverIsId); 2252f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor } else if (ReceiverType->isObjCClassType() || 2253f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor ReceiverType->isObjCQualifiedClassType()) { 2254f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor // Handle messages to Class. 2255759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian // We allow sending a message to a qualified Class ("Class<foo>"), which 2256759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian // is ok as long as one of the protocols implements the selector (if not, warn). 2257759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian if (const ObjCObjectPointerType *QClassTy 2258759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian = ReceiverType->getAsObjCQualifiedClassType()) { 2259759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian // Search protocols for class methods. 2260759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian Method = LookupMethodInQualifiedType(Sel, QClassTy, false); 2261759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian if (!Method) { 2262759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian Method = LookupMethodInQualifiedType(Sel, QClassTy, true); 2263759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian // warn if instance method found for a Class message. 2264759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian if (Method) { 2265759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian Diag(Loc, diag::warn_instance_method_on_class_found) 2266759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian << Method->getSelector() << Sel; 22673306ec1923973d7b5767b23ba95915af2fec87d7Ted Kremenek Diag(Method->getLocation(), diag::note_method_declared_at) 22683306ec1923973d7b5767b23ba95915af2fec87d7Ted Kremenek << Method->getDeclName(); 2269759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian } 22706b9dfd4257b85c388a9e3cd345cf28acb7351006Steve Naroff } 2271759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian } else { 2272759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian if (ObjCMethodDecl *CurMeth = getCurMethodDecl()) { 2273759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian if (ObjCInterfaceDecl *ClassDecl = CurMeth->getClassInterface()) { 2274759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian // First check the public methods in the class interface. 2275759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian Method = ClassDecl->lookupClassMethod(Sel); 2276759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian 2277759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian if (!Method) 2278e61354b274ec5aa6acf3d15271896ce7596bb123Anna Zaks Method = ClassDecl->lookupPrivateClassMethod(Sel); 2279759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian } 2280759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian if (Method && DiagnoseUseOfDecl(Method, Loc)) 2281759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian return ExprError(); 2282759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian } 2283759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian if (!Method) { 2284759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian // If not messaging 'self', look for any factory method named 'Sel'. 2285c737acb8e86564becc5939d681089d1851e6be1aDouglas Gregor if (!Receiver || !isSelfExpr(Receiver)) { 2286759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian Method = LookupFactoryMethodInGlobalPool(Sel, 2287759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian SourceRange(LBracLoc, RBracLoc), 2288759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian true); 2289759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian if (!Method) { 2290759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian // If no class (factory) method was found, check if an _instance_ 2291759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian // method of the same name exists in the root class only. 2292759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian Method = LookupInstanceMethodInGlobalPool(Sel, 22936b308f6dc7d8f1581c52095f435c0e1284b111d8Fariborz Jahanian SourceRange(LBracLoc, RBracLoc), 2294759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian true); 2295759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian if (Method) 2296759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian if (const ObjCInterfaceDecl *ID = 2297759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian dyn_cast<ObjCInterfaceDecl>(Method->getDeclContext())) { 2298759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian if (ID->getSuperClass()) 2299759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian Diag(Loc, diag::warn_root_inst_method_not_found) 2300759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian << Sel << SourceRange(LBracLoc, RBracLoc); 2301759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian } 2302759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian } 230304badcf84c8d504d8491c7c7e29b58f52cb16640Douglas Gregor } 230404badcf84c8d504d8491c7c7e29b58f52cb16640Douglas Gregor } 230504badcf84c8d504d8491c7c7e29b58f52cb16640Douglas Gregor } 230604badcf84c8d504d8491c7c7e29b58f52cb16640Douglas Gregor } else { 2307f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor ObjCInterfaceDecl* ClassDecl = 0; 2308f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor 2309f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor // We allow sending a message to a qualified ID ("id<foo>"), which is ok as 2310f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor // long as one of the protocols implements the selector (if not, warn). 231133e6c2da2f72720ee6a34c6acd2a3e5ad37feca9Fariborz Jahanian // And as long as message is not deprecated/unavailable (warn if it is). 2312f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor if (const ObjCObjectPointerType *QIdTy 2313f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor = ReceiverType->getAsObjCQualifiedIdType()) { 2314f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor // Search protocols for instance methods. 231527569b0f3e1b27f609a2e104b39bad077850e210Fariborz Jahanian Method = LookupMethodInQualifiedType(Sel, QIdTy, true); 231627569b0f3e1b27f609a2e104b39bad077850e210Fariborz Jahanian if (!Method) 231727569b0f3e1b27f609a2e104b39bad077850e210Fariborz Jahanian Method = LookupMethodInQualifiedType(Sel, QIdTy, false); 231833e6c2da2f72720ee6a34c6acd2a3e5ad37feca9Fariborz Jahanian if (Method && DiagnoseUseOfDecl(Method, Loc)) 231933e6c2da2f72720ee6a34c6acd2a3e5ad37feca9Fariborz Jahanian return ExprError(); 2320f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor } else if (const ObjCObjectPointerType *OCIType 2321f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor = ReceiverType->getAsObjCInterfacePointerType()) { 2322f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor // We allow sending a message to a pointer to an interface (an object). 2323f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor ClassDecl = OCIType->getInterfaceDecl(); 2324f85e193739c953358c865005855253af4f68a497John McCall 2325b3029960632ca8a3248e74770eda64d6c16f7246Douglas Gregor // Try to complete the type. Under ARC, this is a hard error from which 2326b3029960632ca8a3248e74770eda64d6c16f7246Douglas Gregor // we don't try to recover. 2327b3029960632ca8a3248e74770eda64d6c16f7246Douglas Gregor const ObjCInterfaceDecl *forwardClass = 0; 2328b3029960632ca8a3248e74770eda64d6c16f7246Douglas Gregor if (RequireCompleteType(Loc, OCIType->getPointeeType(), 23294e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie getLangOpts().ObjCAutoRefCount 2330d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor ? diag::err_arc_receiver_forward_instance 2331d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor : diag::warn_receiver_forward_instance, 2332d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor Receiver? Receiver->getSourceRange() 2333d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor : SourceRange(SuperLoc))) { 23344e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (getLangOpts().ObjCAutoRefCount) 2335b3029960632ca8a3248e74770eda64d6c16f7246Douglas Gregor return ExprError(); 2336b3029960632ca8a3248e74770eda64d6c16f7246Douglas Gregor 2337b3029960632ca8a3248e74770eda64d6c16f7246Douglas Gregor forwardClass = OCIType->getInterfaceDecl(); 23384cc9b10523b61ed260767aeb62cc36fd7734a942Fariborz Jahanian Diag(Receiver ? Receiver->getLocStart() 23394cc9b10523b61ed260767aeb62cc36fd7734a942Fariborz Jahanian : SuperLoc, diag::note_receiver_is_id); 23402e5c15be82f362611c5928ce853d0685ff98c766Douglas Gregor Method = 0; 23412e5c15be82f362611c5928ce853d0685ff98c766Douglas Gregor } else { 23422e5c15be82f362611c5928ce853d0685ff98c766Douglas Gregor Method = ClassDecl->lookupInstanceMethod(Sel); 2343f85e193739c953358c865005855253af4f68a497John McCall } 2344f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor 234527569b0f3e1b27f609a2e104b39bad077850e210Fariborz Jahanian if (!Method) 2346f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor // Search protocol qualifiers. 234727569b0f3e1b27f609a2e104b39bad077850e210Fariborz Jahanian Method = LookupMethodInQualifiedType(Sel, OCIType, true); 234827569b0f3e1b27f609a2e104b39bad077850e210Fariborz Jahanian 2349f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor if (!Method) { 2350f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor // If we have implementations in scope, check "private" methods. 2351e61354b274ec5aa6acf3d15271896ce7596bb123Anna Zaks Method = ClassDecl->lookupPrivateMethod(Sel); 2352f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor 23534e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!Method && getLangOpts().ObjCAutoRefCount) { 2354f85e193739c953358c865005855253af4f68a497John McCall Diag(Loc, diag::err_arc_may_not_respond) 235584c7519a3865a04f631bc8ddfb8372223d96acfcFariborz Jahanian << OCIType->getPointeeType() << Sel 235684c7519a3865a04f631bc8ddfb8372223d96acfcFariborz Jahanian << SourceRange(SelectorLocs.front(), SelectorLocs.back()); 2357f85e193739c953358c865005855253af4f68a497John McCall return ExprError(); 2358f85e193739c953358c865005855253af4f68a497John McCall } 2359f85e193739c953358c865005855253af4f68a497John McCall 2360c737acb8e86564becc5939d681089d1851e6be1aDouglas Gregor if (!Method && (!Receiver || !isSelfExpr(Receiver))) { 2361f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor // If we still haven't found a method, look in the global pool. This 2362f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor // behavior isn't very desirable, however we need it for GCC 2363f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor // compatibility. FIXME: should we deviate?? 2364f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor if (OCIType->qual_empty()) { 2365f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor Method = LookupInstanceMethodInGlobalPool(Sel, 2366d2d065545ba7b4349ae02afe07f799047443f1a0Jordy Rose SourceRange(LBracLoc, RBracLoc)); 23678e5fc9be37c6828ad008f22730e3baac1bef1686Fariborz Jahanian if (Method && !forwardClass) 2368f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor Diag(Loc, diag::warn_maynot_respond) 2369f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor << OCIType->getInterfaceDecl()->getIdentifier() << Sel; 2370f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor } 2371f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor } 2372f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor } 23738e5fc9be37c6828ad008f22730e3baac1bef1686Fariborz Jahanian if (Method && DiagnoseUseOfDecl(Method, Loc, forwardClass)) 2374f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor return ExprError(); 23750bcc9bc6cd46757000245fb7b91302e6ec3478a1John McCall } else { 23762fbe92cc2464c77825209df9a262d9d13e5ba64cJohn McCall // Reject other random receiver types (e.g. structs). 23772fbe92cc2464c77825209df9a262d9d13e5ba64cJohn McCall Diag(Loc, diag::err_bad_receiver_type) 23782fbe92cc2464c77825209df9a262d9d13e5ba64cJohn McCall << ReceiverType << Receiver->getSourceRange(); 23792fbe92cc2464c77825209df9a262d9d13e5ba64cJohn McCall return ExprError(); 2380f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor } 238104badcf84c8d504d8491c7c7e29b58f52cb16640Douglas Gregor } 2382fe1a553256b46fad3c0a9e9967481bcf571339ecChris Lattner } 23831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 23842725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor // Check the message arguments. 23852725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor unsigned NumArgs = ArgsIn.size(); 23865354e77e60e82828c7c2361f5c688c2667ab59ccBenjamin Kramer Expr **Args = ArgsIn.data(); 23872725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor QualType ReturnType; 2388f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall ExprValueKind VK = VK_RValue; 23892600503170c8366af2587408c50e2beedee5d1f1Fariborz Jahanian bool ClassMessage = (ReceiverType->isObjCClassType() || 23902600503170c8366af2587408c50e2beedee5d1f1Fariborz Jahanian ReceiverType->isObjCQualifiedClassType()); 2391376c43223ee29334685250c59fdb11e4b3c594fbFariborz Jahanian if (CheckMessageArgumentTypes(ReceiverType, Args, NumArgs, Sel, 2392376c43223ee29334685250c59fdb11e4b3c594fbFariborz Jahanian SelectorLocs, Method, 2393926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor ClassMessage, SuperLoc.isValid(), 2394f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall LBracLoc, RBracLoc, ReturnType, VK)) 23952725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor return ExprError(); 2396da59e09f1fd53350fcd949adbadd8148117f21b2Fariborz Jahanian 2397483dd2f55ee53bc765123ead3428aa4ad2682cf3Douglas Gregor if (Method && !Method->getResultType()->isVoidType() && 2398483dd2f55ee53bc765123ead3428aa4ad2682cf3Douglas Gregor RequireCompleteType(LBracLoc, Method->getResultType(), 2399483dd2f55ee53bc765123ead3428aa4ad2682cf3Douglas Gregor diag::err_illegal_message_expr_incomplete_type)) 2400483dd2f55ee53bc765123ead3428aa4ad2682cf3Douglas Gregor return ExprError(); 240104badcf84c8d504d8491c7c7e29b58f52cb16640Douglas Gregor 2402951376242c076c3f62dd78bf672909fc011991dbArgyrios Kyrtzidis SourceLocation SelLoc = SelectorLocs.front(); 2403951376242c076c3f62dd78bf672909fc011991dbArgyrios Kyrtzidis 2404f85e193739c953358c865005855253af4f68a497John McCall // In ARC, forbid the user from sending messages to 2405f85e193739c953358c865005855253af4f68a497John McCall // retain/release/autorelease/dealloc/retainCount explicitly. 24064e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (getLangOpts().ObjCAutoRefCount) { 2407f85e193739c953358c865005855253af4f68a497John McCall ObjCMethodFamily family = 2408f85e193739c953358c865005855253af4f68a497John McCall (Method ? Method->getMethodFamily() : Sel.getMethodFamily()); 2409f85e193739c953358c865005855253af4f68a497John McCall switch (family) { 2410f85e193739c953358c865005855253af4f68a497John McCall case OMF_init: 2411f85e193739c953358c865005855253af4f68a497John McCall if (Method) 2412f85e193739c953358c865005855253af4f68a497John McCall checkInitMethod(Method, ReceiverType); 2413f85e193739c953358c865005855253af4f68a497John McCall 2414f85e193739c953358c865005855253af4f68a497John McCall case OMF_None: 2415f85e193739c953358c865005855253af4f68a497John McCall case OMF_alloc: 2416f85e193739c953358c865005855253af4f68a497John McCall case OMF_copy: 241780cb6e69d9e85231588ae604e4bc2bc9a07389afNico Weber case OMF_finalize: 2418f85e193739c953358c865005855253af4f68a497John McCall case OMF_mutableCopy: 2419f85e193739c953358c865005855253af4f68a497John McCall case OMF_new: 2420f85e193739c953358c865005855253af4f68a497John McCall case OMF_self: 2421f85e193739c953358c865005855253af4f68a497John McCall break; 2422f85e193739c953358c865005855253af4f68a497John McCall 2423f85e193739c953358c865005855253af4f68a497John McCall case OMF_dealloc: 2424f85e193739c953358c865005855253af4f68a497John McCall case OMF_retain: 2425f85e193739c953358c865005855253af4f68a497John McCall case OMF_release: 2426f85e193739c953358c865005855253af4f68a497John McCall case OMF_autorelease: 2427f85e193739c953358c865005855253af4f68a497John McCall case OMF_retainCount: 2428f85e193739c953358c865005855253af4f68a497John McCall Diag(Loc, diag::err_arc_illegal_explicit_message) 2429951376242c076c3f62dd78bf672909fc011991dbArgyrios Kyrtzidis << Sel << SelLoc; 2430f85e193739c953358c865005855253af4f68a497John McCall break; 24319670e179a67d868e171feac44fb8f9e2f108c5e8Fariborz Jahanian 24329670e179a67d868e171feac44fb8f9e2f108c5e8Fariborz Jahanian case OMF_performSelector: 24339670e179a67d868e171feac44fb8f9e2f108c5e8Fariborz Jahanian if (Method && NumArgs >= 1) { 24349670e179a67d868e171feac44fb8f9e2f108c5e8Fariborz Jahanian if (ObjCSelectorExpr *SelExp = dyn_cast<ObjCSelectorExpr>(Args[0])) { 24359670e179a67d868e171feac44fb8f9e2f108c5e8Fariborz Jahanian Selector ArgSel = SelExp->getSelector(); 24369670e179a67d868e171feac44fb8f9e2f108c5e8Fariborz Jahanian ObjCMethodDecl *SelMethod = 24379670e179a67d868e171feac44fb8f9e2f108c5e8Fariborz Jahanian LookupInstanceMethodInGlobalPool(ArgSel, 24389670e179a67d868e171feac44fb8f9e2f108c5e8Fariborz Jahanian SelExp->getSourceRange()); 24399670e179a67d868e171feac44fb8f9e2f108c5e8Fariborz Jahanian if (!SelMethod) 24409670e179a67d868e171feac44fb8f9e2f108c5e8Fariborz Jahanian SelMethod = 24419670e179a67d868e171feac44fb8f9e2f108c5e8Fariborz Jahanian LookupFactoryMethodInGlobalPool(ArgSel, 24429670e179a67d868e171feac44fb8f9e2f108c5e8Fariborz Jahanian SelExp->getSourceRange()); 24439670e179a67d868e171feac44fb8f9e2f108c5e8Fariborz Jahanian if (SelMethod) { 24449670e179a67d868e171feac44fb8f9e2f108c5e8Fariborz Jahanian ObjCMethodFamily SelFamily = SelMethod->getMethodFamily(); 24459670e179a67d868e171feac44fb8f9e2f108c5e8Fariborz Jahanian switch (SelFamily) { 24469670e179a67d868e171feac44fb8f9e2f108c5e8Fariborz Jahanian case OMF_alloc: 24479670e179a67d868e171feac44fb8f9e2f108c5e8Fariborz Jahanian case OMF_copy: 24489670e179a67d868e171feac44fb8f9e2f108c5e8Fariborz Jahanian case OMF_mutableCopy: 24499670e179a67d868e171feac44fb8f9e2f108c5e8Fariborz Jahanian case OMF_new: 24509670e179a67d868e171feac44fb8f9e2f108c5e8Fariborz Jahanian case OMF_self: 24519670e179a67d868e171feac44fb8f9e2f108c5e8Fariborz Jahanian case OMF_init: 24529670e179a67d868e171feac44fb8f9e2f108c5e8Fariborz Jahanian // Issue error, unless ns_returns_not_retained. 24539670e179a67d868e171feac44fb8f9e2f108c5e8Fariborz Jahanian if (!SelMethod->hasAttr<NSReturnsNotRetainedAttr>()) { 24549670e179a67d868e171feac44fb8f9e2f108c5e8Fariborz Jahanian // selector names a +1 method 2455951376242c076c3f62dd78bf672909fc011991dbArgyrios Kyrtzidis Diag(SelLoc, 24569670e179a67d868e171feac44fb8f9e2f108c5e8Fariborz Jahanian diag::err_arc_perform_selector_retains); 24573306ec1923973d7b5767b23ba95915af2fec87d7Ted Kremenek Diag(SelMethod->getLocation(), diag::note_method_declared_at) 24583306ec1923973d7b5767b23ba95915af2fec87d7Ted Kremenek << SelMethod->getDeclName(); 24599670e179a67d868e171feac44fb8f9e2f108c5e8Fariborz Jahanian } 24609670e179a67d868e171feac44fb8f9e2f108c5e8Fariborz Jahanian break; 24619670e179a67d868e171feac44fb8f9e2f108c5e8Fariborz Jahanian default: 24629670e179a67d868e171feac44fb8f9e2f108c5e8Fariborz Jahanian // +0 call. OK. unless ns_returns_retained. 24639670e179a67d868e171feac44fb8f9e2f108c5e8Fariborz Jahanian if (SelMethod->hasAttr<NSReturnsRetainedAttr>()) { 24649670e179a67d868e171feac44fb8f9e2f108c5e8Fariborz Jahanian // selector names a +1 method 2465951376242c076c3f62dd78bf672909fc011991dbArgyrios Kyrtzidis Diag(SelLoc, 24669670e179a67d868e171feac44fb8f9e2f108c5e8Fariborz Jahanian diag::err_arc_perform_selector_retains); 24673306ec1923973d7b5767b23ba95915af2fec87d7Ted Kremenek Diag(SelMethod->getLocation(), diag::note_method_declared_at) 24683306ec1923973d7b5767b23ba95915af2fec87d7Ted Kremenek << SelMethod->getDeclName(); 24699670e179a67d868e171feac44fb8f9e2f108c5e8Fariborz Jahanian } 24709670e179a67d868e171feac44fb8f9e2f108c5e8Fariborz Jahanian break; 24719670e179a67d868e171feac44fb8f9e2f108c5e8Fariborz Jahanian } 24729670e179a67d868e171feac44fb8f9e2f108c5e8Fariborz Jahanian } 24739670e179a67d868e171feac44fb8f9e2f108c5e8Fariborz Jahanian } else { 24749670e179a67d868e171feac44fb8f9e2f108c5e8Fariborz Jahanian // error (may leak). 2475951376242c076c3f62dd78bf672909fc011991dbArgyrios Kyrtzidis Diag(SelLoc, diag::warn_arc_perform_selector_leaks); 24769670e179a67d868e171feac44fb8f9e2f108c5e8Fariborz Jahanian Diag(Args[0]->getExprLoc(), diag::note_used_here); 24779670e179a67d868e171feac44fb8f9e2f108c5e8Fariborz Jahanian } 24789670e179a67d868e171feac44fb8f9e2f108c5e8Fariborz Jahanian } 24799670e179a67d868e171feac44fb8f9e2f108c5e8Fariborz Jahanian break; 2480f85e193739c953358c865005855253af4f68a497John McCall } 2481f85e193739c953358c865005855253af4f68a497John McCall } 2482f85e193739c953358c865005855253af4f68a497John McCall 24832725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor // Construct the appropriate ObjCMessageExpr instance. 2484f85e193739c953358c865005855253af4f68a497John McCall ObjCMessageExpr *Result; 24852725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor if (SuperLoc.isValid()) 2486f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall Result = ObjCMessageExpr::Create(Context, ReturnType, VK, LBracLoc, 24872d6b0e94db30c0e2754d270753c6f75478e451bfDouglas Gregor SuperLoc, /*IsInstanceSuper=*/true, 2488951376242c076c3f62dd78bf672909fc011991dbArgyrios Kyrtzidis ReceiverType, Sel, SelectorLocs, Method, 2489746f5bcbfde5b25269169c63c66492311673b67dArgyrios Kyrtzidis makeArrayRef(Args, NumArgs), RBracLoc, 2490746f5bcbfde5b25269169c63c66492311673b67dArgyrios Kyrtzidis isImplicit); 2491ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek else { 2492f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall Result = ObjCMessageExpr::Create(Context, ReturnType, VK, LBracLoc, 2493951376242c076c3f62dd78bf672909fc011991dbArgyrios Kyrtzidis Receiver, Sel, SelectorLocs, Method, 2494746f5bcbfde5b25269169c63c66492311673b67dArgyrios Kyrtzidis makeArrayRef(Args, NumArgs), RBracLoc, 2495746f5bcbfde5b25269169c63c66492311673b67dArgyrios Kyrtzidis isImplicit); 2496ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (!isImplicit) 2497ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek checkCocoaAPI(*this, Result); 2498ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 2499f85e193739c953358c865005855253af4f68a497John McCall 25004e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (getLangOpts().ObjCAutoRefCount) { 25019879556f250c7b692228e834d7fca8f1cb118bf6Fariborz Jahanian DiagnoseARCUseOfWeakReceiver(*this, Receiver); 2502878f8502ebea491b818b48e342f9ad9de2feaff6Fariborz Jahanian 2503f85e193739c953358c865005855253af4f68a497John McCall // In ARC, annotate delegate init calls. 2504f85e193739c953358c865005855253af4f68a497John McCall if (Result->getMethodFamily() == OMF_init && 2505c737acb8e86564becc5939d681089d1851e6be1aDouglas Gregor (SuperLoc.isValid() || isSelfExpr(Receiver))) { 2506f85e193739c953358c865005855253af4f68a497John McCall // Only consider init calls *directly* in init implementations, 2507f85e193739c953358c865005855253af4f68a497John McCall // not within blocks. 2508f85e193739c953358c865005855253af4f68a497John McCall ObjCMethodDecl *method = dyn_cast<ObjCMethodDecl>(CurContext); 2509f85e193739c953358c865005855253af4f68a497John McCall if (method && method->getMethodFamily() == OMF_init) { 2510f85e193739c953358c865005855253af4f68a497John McCall // The implicit assignment to self means we also don't want to 2511f85e193739c953358c865005855253af4f68a497John McCall // consume the result. 2512f85e193739c953358c865005855253af4f68a497John McCall Result->setDelegateInitCall(true); 2513f85e193739c953358c865005855253af4f68a497John McCall return Owned(Result); 2514f85e193739c953358c865005855253af4f68a497John McCall } 2515f85e193739c953358c865005855253af4f68a497John McCall } 2516f85e193739c953358c865005855253af4f68a497John McCall 2517f85e193739c953358c865005855253af4f68a497John McCall // In ARC, check for message sends which are likely to introduce 2518f85e193739c953358c865005855253af4f68a497John McCall // retain cycles. 2519f85e193739c953358c865005855253af4f68a497John McCall checkRetainCycles(Result); 25207fffce781e6ecbf4058b24df7e5ae3037569aa56Jordan Rose 25217fffce781e6ecbf4058b24df7e5ae3037569aa56Jordan Rose if (!isImplicit && Method) { 25227fffce781e6ecbf4058b24df7e5ae3037569aa56Jordan Rose if (const ObjCPropertyDecl *Prop = Method->findPropertyDecl()) { 25237fffce781e6ecbf4058b24df7e5ae3037569aa56Jordan Rose bool IsWeak = 25247fffce781e6ecbf4058b24df7e5ae3037569aa56Jordan Rose Prop->getPropertyAttributes() & ObjCPropertyDecl::OBJC_PR_weak; 25257fffce781e6ecbf4058b24df7e5ae3037569aa56Jordan Rose if (!IsWeak && Sel.isUnarySelector()) 25267fffce781e6ecbf4058b24df7e5ae3037569aa56Jordan Rose IsWeak = ReturnType.getObjCLifetime() & Qualifiers::OCL_Weak; 25277fffce781e6ecbf4058b24df7e5ae3037569aa56Jordan Rose 25287fffce781e6ecbf4058b24df7e5ae3037569aa56Jordan Rose if (IsWeak) { 25297fffce781e6ecbf4058b24df7e5ae3037569aa56Jordan Rose DiagnosticsEngine::Level Level = 25307fffce781e6ecbf4058b24df7e5ae3037569aa56Jordan Rose Diags.getDiagnosticLevel(diag::warn_arc_repeated_use_of_weak, 25317fffce781e6ecbf4058b24df7e5ae3037569aa56Jordan Rose LBracLoc); 25327fffce781e6ecbf4058b24df7e5ae3037569aa56Jordan Rose if (Level != DiagnosticsEngine::Ignored) 25337fffce781e6ecbf4058b24df7e5ae3037569aa56Jordan Rose getCurFunction()->recordUseOfWeak(Result, Prop); 25347fffce781e6ecbf4058b24df7e5ae3037569aa56Jordan Rose 25357fffce781e6ecbf4058b24df7e5ae3037569aa56Jordan Rose } 25367fffce781e6ecbf4058b24df7e5ae3037569aa56Jordan Rose } 25377fffce781e6ecbf4058b24df7e5ae3037569aa56Jordan Rose } 2538f85e193739c953358c865005855253af4f68a497John McCall } 2539f85e193739c953358c865005855253af4f68a497John McCall 25402d6b0e94db30c0e2754d270753c6f75478e451bfDouglas Gregor return MaybeBindToTemporary(Result); 25412725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor} 25422725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor 254348f3cc2b2be1d32df14234904539b34e6e387e4aFariborz Jahanianstatic void RemoveSelectorFromWarningCache(Sema &S, Expr* Arg) { 254448f3cc2b2be1d32df14234904539b34e6e387e4aFariborz Jahanian if (ObjCSelectorExpr *OSE = 254548f3cc2b2be1d32df14234904539b34e6e387e4aFariborz Jahanian dyn_cast<ObjCSelectorExpr>(Arg->IgnoreParenCasts())) { 254648f3cc2b2be1d32df14234904539b34e6e387e4aFariborz Jahanian Selector Sel = OSE->getSelector(); 254748f3cc2b2be1d32df14234904539b34e6e387e4aFariborz Jahanian SourceLocation Loc = OSE->getAtLoc(); 254848f3cc2b2be1d32df14234904539b34e6e387e4aFariborz Jahanian llvm::DenseMap<Selector, SourceLocation>::iterator Pos 254948f3cc2b2be1d32df14234904539b34e6e387e4aFariborz Jahanian = S.ReferencedSelectors.find(Sel); 255048f3cc2b2be1d32df14234904539b34e6e387e4aFariborz Jahanian if (Pos != S.ReferencedSelectors.end() && Pos->second == Loc) 255148f3cc2b2be1d32df14234904539b34e6e387e4aFariborz Jahanian S.ReferencedSelectors.erase(Pos); 255248f3cc2b2be1d32df14234904539b34e6e387e4aFariborz Jahanian } 255348f3cc2b2be1d32df14234904539b34e6e387e4aFariborz Jahanian} 255448f3cc2b2be1d32df14234904539b34e6e387e4aFariborz Jahanian 25552725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor// ActOnInstanceMessage - used for both unary and keyword messages. 25562725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor// ArgExprs is optional - if it is present, the number of expressions 25572725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor// is obtained from Sel.getNumArgs(). 255860d7b3a319d84d688752be3870615ac0f111fb16John McCallExprResult Sema::ActOnInstanceMessage(Scope *S, 255960d7b3a319d84d688752be3870615ac0f111fb16John McCall Expr *Receiver, 256060d7b3a319d84d688752be3870615ac0f111fb16John McCall Selector Sel, 256160d7b3a319d84d688752be3870615ac0f111fb16John McCall SourceLocation LBracLoc, 2562951376242c076c3f62dd78bf672909fc011991dbArgyrios Kyrtzidis ArrayRef<SourceLocation> SelectorLocs, 256360d7b3a319d84d688752be3870615ac0f111fb16John McCall SourceLocation RBracLoc, 256460d7b3a319d84d688752be3870615ac0f111fb16John McCall MultiExprArg Args) { 25652725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor if (!Receiver) 25662725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor return ExprError(); 2567db546fa2ce65dd2e275fc3fdee961767d53f77cfArgyrios Kyrtzidis 2568db546fa2ce65dd2e275fc3fdee961767d53f77cfArgyrios Kyrtzidis // A ParenListExpr can show up while doing error recovery with invalid code. 2569db546fa2ce65dd2e275fc3fdee961767d53f77cfArgyrios Kyrtzidis if (isa<ParenListExpr>(Receiver)) { 2570db546fa2ce65dd2e275fc3fdee961767d53f77cfArgyrios Kyrtzidis ExprResult Result = MaybeConvertParenListExprToParenExpr(S, Receiver); 2571db546fa2ce65dd2e275fc3fdee961767d53f77cfArgyrios Kyrtzidis if (Result.isInvalid()) return ExprError(); 2572db546fa2ce65dd2e275fc3fdee961767d53f77cfArgyrios Kyrtzidis Receiver = Result.take(); 2573db546fa2ce65dd2e275fc3fdee961767d53f77cfArgyrios Kyrtzidis } 25743548068c22f809e5bc64b83d2c3622018469256cFariborz Jahanian 25753548068c22f809e5bc64b83d2c3622018469256cFariborz Jahanian if (RespondsToSelectorSel.isNull()) { 25763548068c22f809e5bc64b83d2c3622018469256cFariborz Jahanian IdentifierInfo *SelectorId = &Context.Idents.get("respondsToSelector"); 25773548068c22f809e5bc64b83d2c3622018469256cFariborz Jahanian RespondsToSelectorSel = Context.Selectors.getUnarySelector(SelectorId); 25783548068c22f809e5bc64b83d2c3622018469256cFariborz Jahanian } 25793548068c22f809e5bc64b83d2c3622018469256cFariborz Jahanian if (Sel == RespondsToSelectorSel) 258048f3cc2b2be1d32df14234904539b34e6e387e4aFariborz Jahanian RemoveSelectorFromWarningCache(*this, Args[0]); 258148f3cc2b2be1d32df14234904539b34e6e387e4aFariborz Jahanian 25829ae2f076ca5ab1feb3ba95629099ec2319833701John McCall return BuildInstanceMessage(Receiver, Receiver->getType(), 2583f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor /*SuperLoc=*/SourceLocation(), Sel, /*Method=*/0, 25843fe198bf0d6118c7b080c17c3bb28d7c84e458b9Benjamin Kramer LBracLoc, SelectorLocs, RBracLoc, Args); 258585a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner} 2586eca7be6b7ebd93682eeaab2c71d59f2995dacdccChris Lattner 2587f85e193739c953358c865005855253af4f68a497John McCallenum ARCConversionTypeClass { 25882cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall /// int, void, struct A 2589f85e193739c953358c865005855253af4f68a497John McCall ACTC_none, 25902cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall 25912cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall /// id, void (^)() 2592f85e193739c953358c865005855253af4f68a497John McCall ACTC_retainable, 25932cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall 25942cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall /// id*, id***, void (^*)(), 25952cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall ACTC_indirectRetainable, 25962cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall 25972cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall /// void* might be a normal C type, or it might a CF type. 25982cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall ACTC_voidPtr, 25992cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall 26002cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall /// struct A* 26012cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall ACTC_coreFoundation 2602f85e193739c953358c865005855253af4f68a497John McCall}; 26032cf031d33ce6801dc11183a3cb48168f53fe06c4John McCallstatic bool isAnyRetainable(ARCConversionTypeClass ACTC) { 26042cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall return (ACTC == ACTC_retainable || 26052cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall ACTC == ACTC_coreFoundation || 26062cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall ACTC == ACTC_voidPtr); 26072cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall} 26082cf031d33ce6801dc11183a3cb48168f53fe06c4John McCallstatic bool isAnyCLike(ARCConversionTypeClass ACTC) { 26092cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall return ACTC == ACTC_none || 26102cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall ACTC == ACTC_voidPtr || 26112cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall ACTC == ACTC_coreFoundation; 26122cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall} 26132cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall 2614f85e193739c953358c865005855253af4f68a497John McCallstatic ARCConversionTypeClass classifyTypeForARCConversion(QualType type) { 26152cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall bool isIndirect = false; 2616f85e193739c953358c865005855253af4f68a497John McCall 2617f85e193739c953358c865005855253af4f68a497John McCall // Ignore an outermost reference type. 26182cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall if (const ReferenceType *ref = type->getAs<ReferenceType>()) { 2619f85e193739c953358c865005855253af4f68a497John McCall type = ref->getPointeeType(); 26202cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall isIndirect = true; 26212cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall } 2622f85e193739c953358c865005855253af4f68a497John McCall 2623f85e193739c953358c865005855253af4f68a497John McCall // Drill through pointers and arrays recursively. 2624f85e193739c953358c865005855253af4f68a497John McCall while (true) { 2625f85e193739c953358c865005855253af4f68a497John McCall if (const PointerType *ptr = type->getAs<PointerType>()) { 2626f85e193739c953358c865005855253af4f68a497John McCall type = ptr->getPointeeType(); 26272cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall 26282cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall // The first level of pointer may be the innermost pointer on a CF type. 26292cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall if (!isIndirect) { 26302cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall if (type->isVoidType()) return ACTC_voidPtr; 26312cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall if (type->isRecordType()) return ACTC_coreFoundation; 26322cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall } 2633f85e193739c953358c865005855253af4f68a497John McCall } else if (const ArrayType *array = type->getAsArrayTypeUnsafe()) { 2634f85e193739c953358c865005855253af4f68a497John McCall type = QualType(array->getElementType()->getBaseElementTypeUnsafe(), 0); 2635f85e193739c953358c865005855253af4f68a497John McCall } else { 2636f85e193739c953358c865005855253af4f68a497John McCall break; 2637f85e193739c953358c865005855253af4f68a497John McCall } 26382cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall isIndirect = true; 2639f85e193739c953358c865005855253af4f68a497John McCall } 2640f85e193739c953358c865005855253af4f68a497John McCall 26412cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall if (isIndirect) { 26422cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall if (type->isObjCARCBridgableType()) 26432cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall return ACTC_indirectRetainable; 26442cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall return ACTC_none; 26452cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall } 26462cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall 26472cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall if (type->isObjCARCBridgableType()) 26482cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall return ACTC_retainable; 26492cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall 26502cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall return ACTC_none; 2651f85e193739c953358c865005855253af4f68a497John McCall} 2652f85e193739c953358c865005855253af4f68a497John McCall 2653f85e193739c953358c865005855253af4f68a497John McCallnamespace { 26542cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall /// A result from the cast checker. 26552cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall enum ACCResult { 26562cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall /// Cannot be casted. 26572cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall ACC_invalid, 26582cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall 26592cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall /// Can be safely retained or not retained. 26602cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall ACC_bottom, 26612cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall 26622cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall /// Can be casted at +0. 26632cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall ACC_plusZero, 26642cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall 26652cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall /// Can be casted at +1. 26662cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall ACC_plusOne 26672cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall }; 26682cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall ACCResult merge(ACCResult left, ACCResult right) { 26692cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall if (left == right) return left; 26702cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall if (left == ACC_bottom) return right; 26712cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall if (right == ACC_bottom) return left; 26722cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall return ACC_invalid; 26732cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall } 26742cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall 26752cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall /// A checker which white-lists certain expressions whose conversion 26762cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall /// to or from retainable type would otherwise be forbidden in ARC. 26772cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall class ARCCastChecker : public StmtVisitor<ARCCastChecker, ACCResult> { 26782cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall typedef StmtVisitor<ARCCastChecker, ACCResult> super; 26792cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall 2680f85e193739c953358c865005855253af4f68a497John McCall ASTContext &Context; 26812cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall ARCConversionTypeClass SourceClass; 26822cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall ARCConversionTypeClass TargetClass; 2683533b34fa7bce6aee7a76f962f02afdf022df6d08Fariborz Jahanian bool Diagnose; 26842cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall 26852cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall static bool isCFType(QualType type) { 26862cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall // Someday this can use ns_bridged. For now, it has to do this. 26872cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall return type->isCARCBridgableType(); 2688f85e193739c953358c865005855253af4f68a497John McCall } 26892cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall 26902cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall public: 26912cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall ARCCastChecker(ASTContext &Context, ARCConversionTypeClass source, 2692533b34fa7bce6aee7a76f962f02afdf022df6d08Fariborz Jahanian ARCConversionTypeClass target, bool diagnose) 2693533b34fa7bce6aee7a76f962f02afdf022df6d08Fariborz Jahanian : Context(Context), SourceClass(source), TargetClass(target), 2694533b34fa7bce6aee7a76f962f02afdf022df6d08Fariborz Jahanian Diagnose(diagnose) {} 26952cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall 26962cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall using super::Visit; 26972cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall ACCResult Visit(Expr *e) { 26982cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall return super::Visit(e->IgnoreParens()); 2699f85e193739c953358c865005855253af4f68a497John McCall } 27002cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall 27012cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall ACCResult VisitStmt(Stmt *s) { 27022cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall return ACC_invalid; 27032cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall } 27042cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall 27052cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall /// Null pointer constants can be casted however you please. 27062cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall ACCResult VisitExpr(Expr *e) { 27072cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall if (e->isNullPointerConstant(Context, Expr::NPC_ValueDependentIsNotNull)) 27082cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall return ACC_bottom; 27092cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall return ACC_invalid; 27102cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall } 27112cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall 27122cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall /// Objective-C string literals can be safely casted. 27132cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall ACCResult VisitObjCStringLiteral(ObjCStringLiteral *e) { 27142cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall // If we're casting to any retainable type, go ahead. Global 27152cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall // strings are immune to retains, so this is bottom. 27162cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall if (isAnyRetainable(TargetClass)) return ACC_bottom; 27172cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall 27182cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall return ACC_invalid; 2719f85e193739c953358c865005855253af4f68a497John McCall } 27202cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall 27212cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall /// Look through certain implicit and explicit casts. 27222cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall ACCResult VisitCastExpr(CastExpr *e) { 2723f85e193739c953358c865005855253af4f68a497John McCall switch (e->getCastKind()) { 2724f85e193739c953358c865005855253af4f68a497John McCall case CK_NullToPointer: 27252cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall return ACC_bottom; 27262cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall 2727f85e193739c953358c865005855253af4f68a497John McCall case CK_NoOp: 2728f85e193739c953358c865005855253af4f68a497John McCall case CK_LValueToRValue: 2729f85e193739c953358c865005855253af4f68a497John McCall case CK_BitCast: 27301d9b3b25f7ac0d0195bba6b507a684fe5e7943eeJohn McCall case CK_CPointerToObjCPointerCast: 27311d9b3b25f7ac0d0195bba6b507a684fe5e7943eeJohn McCall case CK_BlockPointerToObjCPointerCast: 2732f85e193739c953358c865005855253af4f68a497John McCall case CK_AnyPointerToBlockPointerCast: 2733f85e193739c953358c865005855253af4f68a497John McCall return Visit(e->getSubExpr()); 27342cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall 2735f85e193739c953358c865005855253af4f68a497John McCall default: 27362cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall return ACC_invalid; 2737f85e193739c953358c865005855253af4f68a497John McCall } 2738f85e193739c953358c865005855253af4f68a497John McCall } 27392cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall 27402cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall /// Look through unary extension. 27412cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall ACCResult VisitUnaryExtension(UnaryOperator *e) { 2742f85e193739c953358c865005855253af4f68a497John McCall return Visit(e->getSubExpr()); 2743f85e193739c953358c865005855253af4f68a497John McCall } 27442cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall 27452cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall /// Ignore the LHS of a comma operator. 27462cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall ACCResult VisitBinComma(BinaryOperator *e) { 2747f85e193739c953358c865005855253af4f68a497John McCall return Visit(e->getRHS()); 2748f85e193739c953358c865005855253af4f68a497John McCall } 27492cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall 27502cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall /// Conditional operators are okay if both sides are okay. 27512cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall ACCResult VisitConditionalOperator(ConditionalOperator *e) { 27522cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall ACCResult left = Visit(e->getTrueExpr()); 27532cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall if (left == ACC_invalid) return ACC_invalid; 27542cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall return merge(left, Visit(e->getFalseExpr())); 2755f85e193739c953358c865005855253af4f68a497John McCall } 27562cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall 27574b9c2d235fb9449e249d74f48ecfec601650de93John McCall /// Look through pseudo-objects. 27584b9c2d235fb9449e249d74f48ecfec601650de93John McCall ACCResult VisitPseudoObjectExpr(PseudoObjectExpr *e) { 27594b9c2d235fb9449e249d74f48ecfec601650de93John McCall // If we're getting here, we should always have a result. 27604b9c2d235fb9449e249d74f48ecfec601650de93John McCall return Visit(e->getResultExpr()); 27614b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 27624b9c2d235fb9449e249d74f48ecfec601650de93John McCall 27632cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall /// Statement expressions are okay if their result expression is okay. 27642cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall ACCResult VisitStmtExpr(StmtExpr *e) { 2765f85e193739c953358c865005855253af4f68a497John McCall return Visit(e->getSubStmt()->body_back()); 2766f85e193739c953358c865005855253af4f68a497John McCall } 27672cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall 27682cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall /// Some declaration references are okay. 27692cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall ACCResult VisitDeclRefExpr(DeclRefExpr *e) { 27702cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall // References to global constants from system headers are okay. 27712cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall // These are things like 'kCFStringTransformToLatin'. They are 27722cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall // can also be assumed to be immune to retains. 27732cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall VarDecl *var = dyn_cast<VarDecl>(e->getDecl()); 27742cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall if (isAnyRetainable(TargetClass) && 27752cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall isAnyRetainable(SourceClass) && 27762cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall var && 27772cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall var->getStorageClass() == SC_Extern && 27782cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall var->getType().isConstQualified() && 27792cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall Context.getSourceManager().isInSystemHeader(var->getLocation())) { 27802cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall return ACC_bottom; 27812cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall } 27822cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall 27832cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall // Nothing else. 27842cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall return ACC_invalid; 2785f85e193739c953358c865005855253af4f68a497John McCall } 2786f85e193739c953358c865005855253af4f68a497John McCall 27872cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall /// Some calls are okay. 27882cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall ACCResult VisitCallExpr(CallExpr *e) { 27892cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall if (FunctionDecl *fn = e->getDirectCallee()) 27902cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall if (ACCResult result = checkCallToFunction(fn)) 27912cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall return result; 27922cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall 27932cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall return super::VisitCallExpr(e); 2794c8505ad9182c3ddcfda42bee250b2c32dd1f3219Fariborz Jahanian } 27952cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall 27962cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall ACCResult checkCallToFunction(FunctionDecl *fn) { 27972cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall // Require a CF*Ref return type. 27982cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall if (!isCFType(fn->getResultType())) 27992cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall return ACC_invalid; 28002cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall 28012cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall if (!isAnyRetainable(TargetClass)) 28022cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall return ACC_invalid; 28032cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall 28042cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall // Honor an explicit 'not retained' attribute. 28052cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall if (fn->hasAttr<CFReturnsNotRetainedAttr>()) 28062cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall return ACC_plusZero; 28072cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall 28082cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall // Honor an explicit 'retained' attribute, except that for 28092cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall // now we're not going to permit implicit handling of +1 results, 28102cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall // because it's a bit frightening. 28112cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall if (fn->hasAttr<CFReturnsRetainedAttr>()) 281224b2ab7b5939a7298b040216dcd93c838f42d8d0Fariborz Jahanian return Diagnose ? ACC_plusOne 281324b2ab7b5939a7298b040216dcd93c838f42d8d0Fariborz Jahanian : ACC_invalid; // ACC_plusOne if we start accepting this 28142cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall 28152cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall // Recognize this specific builtin function, which is used by CFSTR. 28162cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall unsigned builtinID = fn->getBuiltinID(); 28172cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall if (builtinID == Builtin::BI__builtin___CFStringMakeConstantString) 28182cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall return ACC_bottom; 28192cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall 282024b2ab7b5939a7298b040216dcd93c838f42d8d0Fariborz Jahanian // Otherwise, don't do anything implicit with an unaudited function. 282124b2ab7b5939a7298b040216dcd93c838f42d8d0Fariborz Jahanian if (!fn->hasAttr<CFAuditedTransferAttr>()) 282224b2ab7b5939a7298b040216dcd93c838f42d8d0Fariborz Jahanian return ACC_invalid; 282324b2ab7b5939a7298b040216dcd93c838f42d8d0Fariborz Jahanian 2824533b34fa7bce6aee7a76f962f02afdf022df6d08Fariborz Jahanian // Otherwise, it's +0 unless it follows the create convention. 2825533b34fa7bce6aee7a76f962f02afdf022df6d08Fariborz Jahanian if (ento::coreFoundation::followsCreateRule(fn)) 2826533b34fa7bce6aee7a76f962f02afdf022df6d08Fariborz Jahanian return Diagnose ? ACC_plusOne 2827533b34fa7bce6aee7a76f962f02afdf022df6d08Fariborz Jahanian : ACC_invalid; // ACC_plusOne if we start accepting this 28282cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall 28292cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall return ACC_plusZero; 28302cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall } 28312cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall 28322cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall ACCResult VisitObjCMessageExpr(ObjCMessageExpr *e) { 28332cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall return checkCallToMethod(e->getMethodDecl()); 28342cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall } 28352cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall 28362cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall ACCResult VisitObjCPropertyRefExpr(ObjCPropertyRefExpr *e) { 28372cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall ObjCMethodDecl *method; 28382cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall if (e->isExplicitProperty()) 28392cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall method = e->getExplicitProperty()->getGetterMethodDecl(); 28402cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall else 28412cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall method = e->getImplicitPropertyGetter(); 28422cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall return checkCallToMethod(method); 28432cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall } 28442cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall 28452cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall ACCResult checkCallToMethod(ObjCMethodDecl *method) { 28462cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall if (!method) return ACC_invalid; 28472cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall 28482cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall // Check for message sends to functions returning CF types. We 28492cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall // just obey the Cocoa conventions with these, even though the 28502cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall // return type is CF. 28512cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall if (!isAnyRetainable(TargetClass) || !isCFType(method->getResultType())) 28522cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall return ACC_invalid; 28532cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall 28542cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall // If the method is explicitly marked not-retained, it's +0. 28552cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall if (method->hasAttr<CFReturnsNotRetainedAttr>()) 28562cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall return ACC_plusZero; 28572cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall 28582cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall // If the method is explicitly marked as returning retained, or its 28592cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall // selector follows a +1 Cocoa convention, treat it as +1. 28602cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall if (method->hasAttr<CFReturnsRetainedAttr>()) 28612cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall return ACC_plusOne; 28622cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall 28632cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall switch (method->getSelector().getMethodFamily()) { 28642cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall case OMF_alloc: 28652cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall case OMF_copy: 28662cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall case OMF_mutableCopy: 28672cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall case OMF_new: 28682cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall return ACC_plusOne; 28692cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall 28702cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall default: 28712cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall // Otherwise, treat it as +0. 28722cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall return ACC_plusZero; 2873c8505ad9182c3ddcfda42bee250b2c32dd1f3219Fariborz Jahanian } 2874af9751747b098d77052cb71f1e648f29cfbadcc1Fariborz Jahanian } 28752cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall }; 28761522a7c35e9872c5767721350fc8050be5b14fd2Fariborz Jahanian} 28771522a7c35e9872c5767721350fc8050be5b14fd2Fariborz Jahanian 2878684190b8dbe5258f4708ffbd816b8c5ee5b3502dArgyrios Kyrtzidisbool Sema::isKnownName(StringRef name) { 2879684190b8dbe5258f4708ffbd816b8c5ee5b3502dArgyrios Kyrtzidis if (name.empty()) 2880684190b8dbe5258f4708ffbd816b8c5ee5b3502dArgyrios Kyrtzidis return false; 2881684190b8dbe5258f4708ffbd816b8c5ee5b3502dArgyrios Kyrtzidis LookupResult R(*this, &Context.Idents.get(name), SourceLocation(), 288252b6236427e7b608eadaac2bf8f5a24dd16a1130Fariborz Jahanian Sema::LookupOrdinaryName); 2883684190b8dbe5258f4708ffbd816b8c5ee5b3502dArgyrios Kyrtzidis return LookupName(R, TUScope, false); 288452b6236427e7b608eadaac2bf8f5a24dd16a1130Fariborz Jahanian} 288552b6236427e7b608eadaac2bf8f5a24dd16a1130Fariborz Jahanian 2886ae1b4af84ed0200c1040837ed62762557fbce5a7Argyrios Kyrtzidisstatic void addFixitForObjCARCConversion(Sema &S, 2887ae1b4af84ed0200c1040837ed62762557fbce5a7Argyrios Kyrtzidis DiagnosticBuilder &DiagB, 2888ae1b4af84ed0200c1040837ed62762557fbce5a7Argyrios Kyrtzidis Sema::CheckedConversionKind CCK, 2889ae1b4af84ed0200c1040837ed62762557fbce5a7Argyrios Kyrtzidis SourceLocation afterLParen, 2890ae1b4af84ed0200c1040837ed62762557fbce5a7Argyrios Kyrtzidis QualType castType, 2891ae1b4af84ed0200c1040837ed62762557fbce5a7Argyrios Kyrtzidis Expr *castExpr, 2892f799ae1afb897151a84a7170951e367d8307ae04Fariborz Jahanian Expr *realCast, 2893ae1b4af84ed0200c1040837ed62762557fbce5a7Argyrios Kyrtzidis const char *bridgeKeyword, 2894ae1b4af84ed0200c1040837ed62762557fbce5a7Argyrios Kyrtzidis const char *CFBridgeName) { 2895ae1b4af84ed0200c1040837ed62762557fbce5a7Argyrios Kyrtzidis // We handle C-style and implicit casts here. 2896ae1b4af84ed0200c1040837ed62762557fbce5a7Argyrios Kyrtzidis switch (CCK) { 2897ae1b4af84ed0200c1040837ed62762557fbce5a7Argyrios Kyrtzidis case Sema::CCK_ImplicitConversion: 2898ae1b4af84ed0200c1040837ed62762557fbce5a7Argyrios Kyrtzidis case Sema::CCK_CStyleCast: 2899f799ae1afb897151a84a7170951e367d8307ae04Fariborz Jahanian case Sema::CCK_OtherCast: 2900ae1b4af84ed0200c1040837ed62762557fbce5a7Argyrios Kyrtzidis break; 2901ae1b4af84ed0200c1040837ed62762557fbce5a7Argyrios Kyrtzidis case Sema::CCK_FunctionalCast: 2902ae1b4af84ed0200c1040837ed62762557fbce5a7Argyrios Kyrtzidis return; 2903ae1b4af84ed0200c1040837ed62762557fbce5a7Argyrios Kyrtzidis } 2904ae1b4af84ed0200c1040837ed62762557fbce5a7Argyrios Kyrtzidis 2905ae1b4af84ed0200c1040837ed62762557fbce5a7Argyrios Kyrtzidis if (CFBridgeName) { 2906f799ae1afb897151a84a7170951e367d8307ae04Fariborz Jahanian if (CCK == Sema::CCK_OtherCast) { 2907f799ae1afb897151a84a7170951e367d8307ae04Fariborz Jahanian if (const CXXNamedCastExpr *NCE = dyn_cast<CXXNamedCastExpr>(realCast)) { 2908f799ae1afb897151a84a7170951e367d8307ae04Fariborz Jahanian SourceRange range(NCE->getOperatorLoc(), 2909f799ae1afb897151a84a7170951e367d8307ae04Fariborz Jahanian NCE->getAngleBrackets().getEnd()); 2910f799ae1afb897151a84a7170951e367d8307ae04Fariborz Jahanian SmallString<32> BridgeCall; 2911f799ae1afb897151a84a7170951e367d8307ae04Fariborz Jahanian 2912f799ae1afb897151a84a7170951e367d8307ae04Fariborz Jahanian SourceManager &SM = S.getSourceManager(); 2913f799ae1afb897151a84a7170951e367d8307ae04Fariborz Jahanian char PrevChar = *SM.getCharacterData(range.getBegin().getLocWithOffset(-1)); 2914f799ae1afb897151a84a7170951e367d8307ae04Fariborz Jahanian if (Lexer::isIdentifierBodyChar(PrevChar, S.getLangOpts())) 2915f799ae1afb897151a84a7170951e367d8307ae04Fariborz Jahanian BridgeCall += ' '; 2916f799ae1afb897151a84a7170951e367d8307ae04Fariborz Jahanian 2917f799ae1afb897151a84a7170951e367d8307ae04Fariborz Jahanian BridgeCall += CFBridgeName; 2918f799ae1afb897151a84a7170951e367d8307ae04Fariborz Jahanian DiagB.AddFixItHint(FixItHint::CreateReplacement(range, BridgeCall)); 2919f799ae1afb897151a84a7170951e367d8307ae04Fariborz Jahanian } 2920f799ae1afb897151a84a7170951e367d8307ae04Fariborz Jahanian return; 2921f799ae1afb897151a84a7170951e367d8307ae04Fariborz Jahanian } 2922ae1b4af84ed0200c1040837ed62762557fbce5a7Argyrios Kyrtzidis Expr *castedE = castExpr; 2923ae1b4af84ed0200c1040837ed62762557fbce5a7Argyrios Kyrtzidis if (CStyleCastExpr *CCE = dyn_cast<CStyleCastExpr>(castedE)) 2924ae1b4af84ed0200c1040837ed62762557fbce5a7Argyrios Kyrtzidis castedE = CCE->getSubExpr(); 2925ae1b4af84ed0200c1040837ed62762557fbce5a7Argyrios Kyrtzidis castedE = castedE->IgnoreImpCasts(); 2926ae1b4af84ed0200c1040837ed62762557fbce5a7Argyrios Kyrtzidis SourceRange range = castedE->getSourceRange(); 2927d880b3aa6d594d1a7f2d307c29378c6f59b216ffJordan Rose 2928d880b3aa6d594d1a7f2d307c29378c6f59b216ffJordan Rose SmallString<32> BridgeCall; 2929d880b3aa6d594d1a7f2d307c29378c6f59b216ffJordan Rose 2930d880b3aa6d594d1a7f2d307c29378c6f59b216ffJordan Rose SourceManager &SM = S.getSourceManager(); 2931d880b3aa6d594d1a7f2d307c29378c6f59b216ffJordan Rose char PrevChar = *SM.getCharacterData(range.getBegin().getLocWithOffset(-1)); 2932d880b3aa6d594d1a7f2d307c29378c6f59b216ffJordan Rose if (Lexer::isIdentifierBodyChar(PrevChar, S.getLangOpts())) 2933d880b3aa6d594d1a7f2d307c29378c6f59b216ffJordan Rose BridgeCall += ' '; 2934d880b3aa6d594d1a7f2d307c29378c6f59b216ffJordan Rose 2935d880b3aa6d594d1a7f2d307c29378c6f59b216ffJordan Rose BridgeCall += CFBridgeName; 2936d880b3aa6d594d1a7f2d307c29378c6f59b216ffJordan Rose 2937ae1b4af84ed0200c1040837ed62762557fbce5a7Argyrios Kyrtzidis if (isa<ParenExpr>(castedE)) { 2938ae1b4af84ed0200c1040837ed62762557fbce5a7Argyrios Kyrtzidis DiagB.AddFixItHint(FixItHint::CreateInsertion(range.getBegin(), 2939d880b3aa6d594d1a7f2d307c29378c6f59b216ffJordan Rose BridgeCall)); 2940ae1b4af84ed0200c1040837ed62762557fbce5a7Argyrios Kyrtzidis } else { 2941d880b3aa6d594d1a7f2d307c29378c6f59b216ffJordan Rose BridgeCall += '('; 2942ae1b4af84ed0200c1040837ed62762557fbce5a7Argyrios Kyrtzidis DiagB.AddFixItHint(FixItHint::CreateInsertion(range.getBegin(), 2943d880b3aa6d594d1a7f2d307c29378c6f59b216ffJordan Rose BridgeCall)); 2944ae1b4af84ed0200c1040837ed62762557fbce5a7Argyrios Kyrtzidis DiagB.AddFixItHint(FixItHint::CreateInsertion( 2945ae1b4af84ed0200c1040837ed62762557fbce5a7Argyrios Kyrtzidis S.PP.getLocForEndOfToken(range.getEnd()), 2946ae1b4af84ed0200c1040837ed62762557fbce5a7Argyrios Kyrtzidis ")")); 2947ae1b4af84ed0200c1040837ed62762557fbce5a7Argyrios Kyrtzidis } 2948ae1b4af84ed0200c1040837ed62762557fbce5a7Argyrios Kyrtzidis return; 2949ae1b4af84ed0200c1040837ed62762557fbce5a7Argyrios Kyrtzidis } 2950ae1b4af84ed0200c1040837ed62762557fbce5a7Argyrios Kyrtzidis 2951ae1b4af84ed0200c1040837ed62762557fbce5a7Argyrios Kyrtzidis if (CCK == Sema::CCK_CStyleCast) { 2952ae1b4af84ed0200c1040837ed62762557fbce5a7Argyrios Kyrtzidis DiagB.AddFixItHint(FixItHint::CreateInsertion(afterLParen, bridgeKeyword)); 2953f799ae1afb897151a84a7170951e367d8307ae04Fariborz Jahanian } else if (CCK == Sema::CCK_OtherCast) { 2954f799ae1afb897151a84a7170951e367d8307ae04Fariborz Jahanian if (const CXXNamedCastExpr *NCE = dyn_cast<CXXNamedCastExpr>(realCast)) { 2955f799ae1afb897151a84a7170951e367d8307ae04Fariborz Jahanian std::string castCode = "("; 2956f799ae1afb897151a84a7170951e367d8307ae04Fariborz Jahanian castCode += bridgeKeyword; 2957f799ae1afb897151a84a7170951e367d8307ae04Fariborz Jahanian castCode += castType.getAsString(); 2958f799ae1afb897151a84a7170951e367d8307ae04Fariborz Jahanian castCode += ")"; 2959f799ae1afb897151a84a7170951e367d8307ae04Fariborz Jahanian SourceRange Range(NCE->getOperatorLoc(), 2960f799ae1afb897151a84a7170951e367d8307ae04Fariborz Jahanian NCE->getAngleBrackets().getEnd()); 2961f799ae1afb897151a84a7170951e367d8307ae04Fariborz Jahanian DiagB.AddFixItHint(FixItHint::CreateReplacement(Range, castCode)); 2962f799ae1afb897151a84a7170951e367d8307ae04Fariborz Jahanian } 2963ae1b4af84ed0200c1040837ed62762557fbce5a7Argyrios Kyrtzidis } else { 2964ae1b4af84ed0200c1040837ed62762557fbce5a7Argyrios Kyrtzidis std::string castCode = "("; 2965ae1b4af84ed0200c1040837ed62762557fbce5a7Argyrios Kyrtzidis castCode += bridgeKeyword; 2966ae1b4af84ed0200c1040837ed62762557fbce5a7Argyrios Kyrtzidis castCode += castType.getAsString(); 2967ae1b4af84ed0200c1040837ed62762557fbce5a7Argyrios Kyrtzidis castCode += ")"; 2968ae1b4af84ed0200c1040837ed62762557fbce5a7Argyrios Kyrtzidis Expr *castedE = castExpr->IgnoreImpCasts(); 2969ae1b4af84ed0200c1040837ed62762557fbce5a7Argyrios Kyrtzidis SourceRange range = castedE->getSourceRange(); 2970ae1b4af84ed0200c1040837ed62762557fbce5a7Argyrios Kyrtzidis if (isa<ParenExpr>(castedE)) { 2971ae1b4af84ed0200c1040837ed62762557fbce5a7Argyrios Kyrtzidis DiagB.AddFixItHint(FixItHint::CreateInsertion(range.getBegin(), 2972ae1b4af84ed0200c1040837ed62762557fbce5a7Argyrios Kyrtzidis castCode)); 2973ae1b4af84ed0200c1040837ed62762557fbce5a7Argyrios Kyrtzidis } else { 2974ae1b4af84ed0200c1040837ed62762557fbce5a7Argyrios Kyrtzidis castCode += "("; 2975ae1b4af84ed0200c1040837ed62762557fbce5a7Argyrios Kyrtzidis DiagB.AddFixItHint(FixItHint::CreateInsertion(range.getBegin(), 2976ae1b4af84ed0200c1040837ed62762557fbce5a7Argyrios Kyrtzidis castCode)); 2977ae1b4af84ed0200c1040837ed62762557fbce5a7Argyrios Kyrtzidis DiagB.AddFixItHint(FixItHint::CreateInsertion( 2978ae1b4af84ed0200c1040837ed62762557fbce5a7Argyrios Kyrtzidis S.PP.getLocForEndOfToken(range.getEnd()), 2979ae1b4af84ed0200c1040837ed62762557fbce5a7Argyrios Kyrtzidis ")")); 2980ae1b4af84ed0200c1040837ed62762557fbce5a7Argyrios Kyrtzidis } 2981ae1b4af84ed0200c1040837ed62762557fbce5a7Argyrios Kyrtzidis } 2982ae1b4af84ed0200c1040837ed62762557fbce5a7Argyrios Kyrtzidis} 2983ae1b4af84ed0200c1040837ed62762557fbce5a7Argyrios Kyrtzidis 29845acb0c98b363400f6ade0ae7250f0102224e806bJohn McCallstatic void 29855acb0c98b363400f6ade0ae7250f0102224e806bJohn McCalldiagnoseObjCARCConversion(Sema &S, SourceRange castRange, 29865acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall QualType castType, ARCConversionTypeClass castACTC, 2987f799ae1afb897151a84a7170951e367d8307ae04Fariborz Jahanian Expr *castExpr, Expr *realCast, 2988f799ae1afb897151a84a7170951e367d8307ae04Fariborz Jahanian ARCConversionTypeClass exprACTC, 29895acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall Sema::CheckedConversionKind CCK) { 29905acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall SourceLocation loc = 29915acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall (castRange.isValid() ? castRange.getBegin() : castExpr->getExprLoc()); 29925acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall 29935acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall if (S.makeUnavailableInSystemHeader(loc, 29945acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall "converts between Objective-C and C pointers in -fobjc-arc")) 29955acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall return; 29965acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall 29975acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall QualType castExprType = castExpr->getType(); 29985acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall 29995acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall unsigned srcKind = 0; 30005acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall switch (exprACTC) { 30015acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall case ACTC_none: 30025acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall case ACTC_coreFoundation: 30035acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall case ACTC_voidPtr: 30045acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall srcKind = (castExprType->isPointerType() ? 1 : 0); 30055acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall break; 30065acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall case ACTC_retainable: 30075acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall srcKind = (castExprType->isBlockPointerType() ? 2 : 3); 30085acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall break; 30095acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall case ACTC_indirectRetainable: 30105acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall srcKind = 4; 30115acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall break; 30125acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall } 30135acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall 30145acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall // Check whether this could be fixed with a bridge cast. 30155acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall SourceLocation afterLParen = S.PP.getLocForEndOfToken(castRange.getBegin()); 30165acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall SourceLocation noteLoc = afterLParen.isValid() ? afterLParen : loc; 30175acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall 30185acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall // Bridge from an ARC type to a CF type. 30195acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall if (castACTC == ACTC_retainable && isAnyRetainable(exprACTC)) { 302052b6236427e7b608eadaac2bf8f5a24dd16a1130Fariborz Jahanian 30215acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall S.Diag(loc, diag::err_arc_cast_requires_bridge) 30225acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall << unsigned(CCK == Sema::CCK_ImplicitConversion) // cast|implicit 30235acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall << 2 // of C pointer type 30245acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall << castExprType 30255acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall << unsigned(castType->isBlockPointerType()) // to ObjC|block type 30265acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall << castType 30275acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall << castRange 30285acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall << castExpr->getSourceRange(); 3029684190b8dbe5258f4708ffbd816b8c5ee5b3502dArgyrios Kyrtzidis bool br = S.isKnownName("CFBridgingRelease"); 30302f71622dc8888e6da7ce786e42e8e9fbab075de6Jordan Rose ACCResult CreateRule = 303124b2ab7b5939a7298b040216dcd93c838f42d8d0Fariborz Jahanian ARCCastChecker(S.Context, exprACTC, castACTC, true).Visit(castExpr); 30322f71622dc8888e6da7ce786e42e8e9fbab075de6Jordan Rose assert(CreateRule != ACC_bottom && "This cast should already be accepted."); 303324b2ab7b5939a7298b040216dcd93c838f42d8d0Fariborz Jahanian if (CreateRule != ACC_plusOne) 3034607f587a8cdf590f947a0248df8f18082eac8229Fariborz Jahanian { 3035f0b1a0ee4787cd60a34951950baa6dd7d3d53a64Fariborz Jahanian DiagnosticBuilder DiagB = 3036f0b1a0ee4787cd60a34951950baa6dd7d3d53a64Fariborz Jahanian (CCK != Sema::CCK_OtherCast) ? S.Diag(noteLoc, diag::note_arc_bridge) 3037f0b1a0ee4787cd60a34951950baa6dd7d3d53a64Fariborz Jahanian : S.Diag(noteLoc, diag::note_arc_cstyle_bridge); 3038f0b1a0ee4787cd60a34951950baa6dd7d3d53a64Fariborz Jahanian 3039607f587a8cdf590f947a0248df8f18082eac8229Fariborz Jahanian addFixitForObjCARCConversion(S, DiagB, CCK, afterLParen, 3040f799ae1afb897151a84a7170951e367d8307ae04Fariborz Jahanian castType, castExpr, realCast, "__bridge ", 0); 3041607f587a8cdf590f947a0248df8f18082eac8229Fariborz Jahanian } 304274cb390d238b55cede882ef5f598215c3537ae95Fariborz Jahanian if (CreateRule != ACC_plusZero) 3043607f587a8cdf590f947a0248df8f18082eac8229Fariborz Jahanian { 3044f0b1a0ee4787cd60a34951950baa6dd7d3d53a64Fariborz Jahanian DiagnosticBuilder DiagB = 3045f0b1a0ee4787cd60a34951950baa6dd7d3d53a64Fariborz Jahanian (CCK == Sema::CCK_OtherCast && !br) ? 3046f0b1a0ee4787cd60a34951950baa6dd7d3d53a64Fariborz Jahanian S.Diag(noteLoc, diag::note_arc_cstyle_bridge_transfer) << castExprType : 3047f0b1a0ee4787cd60a34951950baa6dd7d3d53a64Fariborz Jahanian S.Diag(br ? castExpr->getExprLoc() : noteLoc, 3048f0b1a0ee4787cd60a34951950baa6dd7d3d53a64Fariborz Jahanian diag::note_arc_bridge_transfer) 3049f0b1a0ee4787cd60a34951950baa6dd7d3d53a64Fariborz Jahanian << castExprType << br; 3050f0b1a0ee4787cd60a34951950baa6dd7d3d53a64Fariborz Jahanian 3051607f587a8cdf590f947a0248df8f18082eac8229Fariborz Jahanian addFixitForObjCARCConversion(S, DiagB, CCK, afterLParen, 3052f799ae1afb897151a84a7170951e367d8307ae04Fariborz Jahanian castType, castExpr, realCast, "__bridge_transfer ", 3053607f587a8cdf590f947a0248df8f18082eac8229Fariborz Jahanian br ? "CFBridgingRelease" : 0); 3054607f587a8cdf590f947a0248df8f18082eac8229Fariborz Jahanian } 30555acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall 30565acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall return; 30575acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall } 30585acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall 30595acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall // Bridge from a CF type to an ARC type. 30605acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall if (exprACTC == ACTC_retainable && isAnyRetainable(castACTC)) { 3061684190b8dbe5258f4708ffbd816b8c5ee5b3502dArgyrios Kyrtzidis bool br = S.isKnownName("CFBridgingRetain"); 30625acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall S.Diag(loc, diag::err_arc_cast_requires_bridge) 30635acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall << unsigned(CCK == Sema::CCK_ImplicitConversion) // cast|implicit 30645acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall << unsigned(castExprType->isBlockPointerType()) // of ObjC|block type 30655acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall << castExprType 30665acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall << 2 // to C pointer type 30675acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall << castType 30685acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall << castRange 30695acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall << castExpr->getSourceRange(); 307024b2ab7b5939a7298b040216dcd93c838f42d8d0Fariborz Jahanian ACCResult CreateRule = 307124b2ab7b5939a7298b040216dcd93c838f42d8d0Fariborz Jahanian ARCCastChecker(S.Context, exprACTC, castACTC, true).Visit(castExpr); 30722f71622dc8888e6da7ce786e42e8e9fbab075de6Jordan Rose assert(CreateRule != ACC_bottom && "This cast should already be accepted."); 307324b2ab7b5939a7298b040216dcd93c838f42d8d0Fariborz Jahanian if (CreateRule != ACC_plusOne) 3074607f587a8cdf590f947a0248df8f18082eac8229Fariborz Jahanian { 3075f0b1a0ee4787cd60a34951950baa6dd7d3d53a64Fariborz Jahanian DiagnosticBuilder DiagB = 3076f0b1a0ee4787cd60a34951950baa6dd7d3d53a64Fariborz Jahanian (CCK != Sema::CCK_OtherCast) ? S.Diag(noteLoc, diag::note_arc_bridge) 3077f0b1a0ee4787cd60a34951950baa6dd7d3d53a64Fariborz Jahanian : S.Diag(noteLoc, diag::note_arc_cstyle_bridge); 3078607f587a8cdf590f947a0248df8f18082eac8229Fariborz Jahanian addFixitForObjCARCConversion(S, DiagB, CCK, afterLParen, 3079f799ae1afb897151a84a7170951e367d8307ae04Fariborz Jahanian castType, castExpr, realCast, "__bridge ", 0); 3080607f587a8cdf590f947a0248df8f18082eac8229Fariborz Jahanian } 308174cb390d238b55cede882ef5f598215c3537ae95Fariborz Jahanian if (CreateRule != ACC_plusZero) 3082607f587a8cdf590f947a0248df8f18082eac8229Fariborz Jahanian { 3083f0b1a0ee4787cd60a34951950baa6dd7d3d53a64Fariborz Jahanian DiagnosticBuilder DiagB = 3084f0b1a0ee4787cd60a34951950baa6dd7d3d53a64Fariborz Jahanian (CCK == Sema::CCK_OtherCast && !br) ? 3085f0b1a0ee4787cd60a34951950baa6dd7d3d53a64Fariborz Jahanian S.Diag(noteLoc, diag::note_arc_cstyle_bridge_retained) << castType : 3086f0b1a0ee4787cd60a34951950baa6dd7d3d53a64Fariborz Jahanian S.Diag(br ? castExpr->getExprLoc() : noteLoc, 3087f0b1a0ee4787cd60a34951950baa6dd7d3d53a64Fariborz Jahanian diag::note_arc_bridge_retained) 3088f0b1a0ee4787cd60a34951950baa6dd7d3d53a64Fariborz Jahanian << castType << br; 3089f0b1a0ee4787cd60a34951950baa6dd7d3d53a64Fariborz Jahanian 3090607f587a8cdf590f947a0248df8f18082eac8229Fariborz Jahanian addFixitForObjCARCConversion(S, DiagB, CCK, afterLParen, 3091f799ae1afb897151a84a7170951e367d8307ae04Fariborz Jahanian castType, castExpr, realCast, "__bridge_retained ", 3092607f587a8cdf590f947a0248df8f18082eac8229Fariborz Jahanian br ? "CFBridgingRetain" : 0); 3093607f587a8cdf590f947a0248df8f18082eac8229Fariborz Jahanian } 30945acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall 30955acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall return; 30965acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall } 30975acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall 30985acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall S.Diag(loc, diag::err_arc_mismatched_cast) 30995acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall << (CCK != Sema::CCK_ImplicitConversion) 31005acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall << srcKind << castExprType << castType 31015acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall << castRange << castExpr->getSourceRange(); 31025acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall} 31035acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall 31045acb0c98b363400f6ade0ae7250f0102224e806bJohn McCallSema::ARCConversionResult 3105f85e193739c953358c865005855253af4f68a497John McCallSema::CheckObjCARCConversion(SourceRange castRange, QualType castType, 3106af9751747b098d77052cb71f1e648f29cfbadcc1Fariborz Jahanian Expr *&castExpr, CheckedConversionKind CCK) { 3107f85e193739c953358c865005855253af4f68a497John McCall QualType castExprType = castExpr->getType(); 31082cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall 31092cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall // For the purposes of the classification, we assume reference types 31102cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall // will bind to temporaries. 31112cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall QualType effCastType = castType; 31122cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall if (const ReferenceType *ref = castType->getAs<ReferenceType>()) 31132cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall effCastType = ref->getPointeeType(); 3114f85e193739c953358c865005855253af4f68a497John McCall 3115f85e193739c953358c865005855253af4f68a497John McCall ARCConversionTypeClass exprACTC = classifyTypeForARCConversion(castExprType); 31162cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall ARCConversionTypeClass castACTC = classifyTypeForARCConversion(effCastType); 31176d09f01af70bbd58ddbccb0a22f5479782b31797Fariborz Jahanian if (exprACTC == castACTC) { 31186d09f01af70bbd58ddbccb0a22f5479782b31797Fariborz Jahanian // check for viablity and report error if casting an rvalue to a 31196d09f01af70bbd58ddbccb0a22f5479782b31797Fariborz Jahanian // life-time qualifier. 3120fc2eff57d7497578e8f08a5ee520ad3886a51186Fariborz Jahanian if ((castACTC == ACTC_retainable) && 31216d09f01af70bbd58ddbccb0a22f5479782b31797Fariborz Jahanian (CCK == CCK_CStyleCast || CCK == CCK_OtherCast) && 3122fc2eff57d7497578e8f08a5ee520ad3886a51186Fariborz Jahanian (castType != castExprType)) { 3123fc2eff57d7497578e8f08a5ee520ad3886a51186Fariborz Jahanian const Type *DT = castType.getTypePtr(); 3124fc2eff57d7497578e8f08a5ee520ad3886a51186Fariborz Jahanian QualType QDT = castType; 3125fc2eff57d7497578e8f08a5ee520ad3886a51186Fariborz Jahanian // We desugar some types but not others. We ignore those 3126fc2eff57d7497578e8f08a5ee520ad3886a51186Fariborz Jahanian // that cannot happen in a cast; i.e. auto, and those which 3127fc2eff57d7497578e8f08a5ee520ad3886a51186Fariborz Jahanian // should not be de-sugared; i.e typedef. 3128fc2eff57d7497578e8f08a5ee520ad3886a51186Fariborz Jahanian if (const ParenType *PT = dyn_cast<ParenType>(DT)) 3129fc2eff57d7497578e8f08a5ee520ad3886a51186Fariborz Jahanian QDT = PT->desugar(); 3130fc2eff57d7497578e8f08a5ee520ad3886a51186Fariborz Jahanian else if (const TypeOfType *TP = dyn_cast<TypeOfType>(DT)) 3131fc2eff57d7497578e8f08a5ee520ad3886a51186Fariborz Jahanian QDT = TP->desugar(); 3132fc2eff57d7497578e8f08a5ee520ad3886a51186Fariborz Jahanian else if (const AttributedType *AT = dyn_cast<AttributedType>(DT)) 3133fc2eff57d7497578e8f08a5ee520ad3886a51186Fariborz Jahanian QDT = AT->desugar(); 3134fc2eff57d7497578e8f08a5ee520ad3886a51186Fariborz Jahanian if (QDT != castType && 3135fc2eff57d7497578e8f08a5ee520ad3886a51186Fariborz Jahanian QDT.getObjCLifetime() != Qualifiers::OCL_None) { 3136fc2eff57d7497578e8f08a5ee520ad3886a51186Fariborz Jahanian SourceLocation loc = 3137fc2eff57d7497578e8f08a5ee520ad3886a51186Fariborz Jahanian (castRange.isValid() ? castRange.getBegin() 3138fc2eff57d7497578e8f08a5ee520ad3886a51186Fariborz Jahanian : castExpr->getExprLoc()); 3139fc2eff57d7497578e8f08a5ee520ad3886a51186Fariborz Jahanian Diag(loc, diag::err_arc_nolifetime_behavior); 3140fc2eff57d7497578e8f08a5ee520ad3886a51186Fariborz Jahanian } 31416d09f01af70bbd58ddbccb0a22f5479782b31797Fariborz Jahanian } 31426d09f01af70bbd58ddbccb0a22f5479782b31797Fariborz Jahanian return ACR_okay; 31436d09f01af70bbd58ddbccb0a22f5479782b31797Fariborz Jahanian } 31446d09f01af70bbd58ddbccb0a22f5479782b31797Fariborz Jahanian 31455acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall if (isAnyCLike(exprACTC) && isAnyCLike(castACTC)) return ACR_okay; 31462cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall 31472cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall // Allow all of these types to be cast to integer types (but not 31482cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall // vice-versa). 31492cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall if (castACTC == ACTC_none && castType->isIntegralType(Context)) 31505acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall return ACR_okay; 3151f85e193739c953358c865005855253af4f68a497John McCall 3152f85e193739c953358c865005855253af4f68a497John McCall // Allow casts between pointers to lifetime types (e.g., __strong id*) 3153f85e193739c953358c865005855253af4f68a497John McCall // and pointers to void (e.g., cv void *). Casting from void* to lifetime* 3154f85e193739c953358c865005855253af4f68a497John McCall // must be explicit. 31552cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall if (exprACTC == ACTC_indirectRetainable && castACTC == ACTC_voidPtr) 31565acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall return ACR_okay; 31572cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall if (castACTC == ACTC_indirectRetainable && exprACTC == ACTC_voidPtr && 31582cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall CCK != CCK_ImplicitConversion) 31595acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall return ACR_okay; 31602cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall 3161533b34fa7bce6aee7a76f962f02afdf022df6d08Fariborz Jahanian switch (ARCCastChecker(Context, exprACTC, castACTC, false).Visit(castExpr)) { 31622cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall // For invalid casts, fall through. 31632cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall case ACC_invalid: 31642cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall break; 31652cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall 31662cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall // Do nothing for both bottom and +0. 31672cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall case ACC_bottom: 31682cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall case ACC_plusZero: 31695acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall return ACR_okay; 31702cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall 31712cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall // If the result is +1, consume it here. 31722cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall case ACC_plusOne: 31732cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall castExpr = ImplicitCastExpr::Create(Context, castExpr->getType(), 31742cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall CK_ARCConsumeObject, castExpr, 31752cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall 0, VK_RValue); 31762cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall ExprNeedsCleanups = true; 31775acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall return ACR_okay; 31782cf031d33ce6801dc11183a3cb48168f53fe06c4John McCall } 31795acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall 31805acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall // If this is a non-implicit cast from id or block type to a 31815acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall // CoreFoundation type, delay complaining in case the cast is used 31825acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall // in an acceptable context. 31835acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall if (exprACTC == ACTC_retainable && isAnyRetainable(castACTC) && 31845acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall CCK != CCK_ImplicitConversion) 31855acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall return ACR_unbridged; 31865acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall 31875acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall diagnoseObjCARCConversion(*this, castRange, castType, castACTC, 3188f799ae1afb897151a84a7170951e367d8307ae04Fariborz Jahanian castExpr, castExpr, exprACTC, CCK); 31895acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall return ACR_okay; 31905acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall} 31915acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall 31925acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall/// Given that we saw an expression with the ARCUnbridgedCastTy 31935acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall/// placeholder type, complain bitterly. 31945acb0c98b363400f6ade0ae7250f0102224e806bJohn McCallvoid Sema::diagnoseARCUnbridgedCast(Expr *e) { 31955acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall // We expect the spurious ImplicitCastExpr to already have been stripped. 31965acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall assert(!e->hasPlaceholderType(BuiltinType::ARCUnbridgedCast)); 31975acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall CastExpr *realCast = cast<CastExpr>(e->IgnoreParens()); 31985acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall 31995acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall SourceRange castRange; 32005acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall QualType castType; 32015acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall CheckedConversionKind CCK; 32025acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall 32035acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall if (CStyleCastExpr *cast = dyn_cast<CStyleCastExpr>(realCast)) { 32045acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall castRange = SourceRange(cast->getLParenLoc(), cast->getRParenLoc()); 32055acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall castType = cast->getTypeAsWritten(); 32065acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall CCK = CCK_CStyleCast; 32075acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall } else if (ExplicitCastExpr *cast = dyn_cast<ExplicitCastExpr>(realCast)) { 32085acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall castRange = cast->getTypeInfoAsWritten()->getTypeLoc().getSourceRange(); 32095acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall castType = cast->getTypeAsWritten(); 32105acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall CCK = CCK_OtherCast; 32115acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall } else { 32125acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall castType = cast->getType(); 32135acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall CCK = CCK_ImplicitConversion; 3214f85e193739c953358c865005855253af4f68a497John McCall } 32155acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall 32165acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall ARCConversionTypeClass castACTC = 32175acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall classifyTypeForARCConversion(castType.getNonReferenceType()); 32185acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall 32195acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall Expr *castExpr = realCast->getSubExpr(); 32205acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall assert(classifyTypeForARCConversion(castExpr->getType()) == ACTC_retainable); 32215acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall 32225acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall diagnoseObjCARCConversion(*this, castRange, castType, castACTC, 3223f799ae1afb897151a84a7170951e367d8307ae04Fariborz Jahanian castExpr, realCast, ACTC_retainable, CCK); 32245acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall} 32255acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall 32265acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall/// stripARCUnbridgedCast - Given an expression of ARCUnbridgedCast 32275acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall/// type, remove the placeholder cast. 32285acb0c98b363400f6ade0ae7250f0102224e806bJohn McCallExpr *Sema::stripARCUnbridgedCast(Expr *e) { 32295acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall assert(e->hasPlaceholderType(BuiltinType::ARCUnbridgedCast)); 32305acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall 32315acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall if (ParenExpr *pe = dyn_cast<ParenExpr>(e)) { 32325acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall Expr *sub = stripARCUnbridgedCast(pe->getSubExpr()); 32335acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall return new (Context) ParenExpr(pe->getLParen(), pe->getRParen(), sub); 32345acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall } else if (UnaryOperator *uo = dyn_cast<UnaryOperator>(e)) { 32355acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall assert(uo->getOpcode() == UO_Extension); 32365acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall Expr *sub = stripARCUnbridgedCast(uo->getSubExpr()); 32375acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall return new (Context) UnaryOperator(sub, UO_Extension, sub->getType(), 32385acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall sub->getValueKind(), sub->getObjectKind(), 32395acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall uo->getOperatorLoc()); 32405acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall } else if (GenericSelectionExpr *gse = dyn_cast<GenericSelectionExpr>(e)) { 32415acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall assert(!gse->isResultDependent()); 32425acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall 32435acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall unsigned n = gse->getNumAssocs(); 32445acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall SmallVector<Expr*, 4> subExprs(n); 32455acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall SmallVector<TypeSourceInfo*, 4> subTypes(n); 32465acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall for (unsigned i = 0; i != n; ++i) { 32475acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall subTypes[i] = gse->getAssocTypeSourceInfo(i); 32485acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall Expr *sub = gse->getAssocExpr(i); 32495acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall if (i == gse->getResultIndex()) 32505acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall sub = stripARCUnbridgedCast(sub); 32515acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall subExprs[i] = sub; 3252f85e193739c953358c865005855253af4f68a497John McCall } 32535acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall 32545acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall return new (Context) GenericSelectionExpr(Context, gse->getGenericLoc(), 32555acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall gse->getControllingExpr(), 32563b6bef9a213249c6ab6d67c07b1ac6380961be3eBenjamin Kramer subTypes, subExprs, 32573b6bef9a213249c6ab6d67c07b1ac6380961be3eBenjamin Kramer gse->getDefaultLoc(), 32585acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall gse->getRParenLoc(), 32595acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall gse->containsUnexpandedParameterPack(), 32605acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall gse->getResultIndex()); 32615acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall } else { 32625acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall assert(isa<ImplicitCastExpr>(e) && "bad form of unbridged cast!"); 32635acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall return cast<ImplicitCastExpr>(e)->getSubExpr(); 3264f85e193739c953358c865005855253af4f68a497John McCall } 3265f85e193739c953358c865005855253af4f68a497John McCall} 3266f85e193739c953358c865005855253af4f68a497John McCall 32677a084ec568f8336ec6f10011d0118a6b19e253cbFariborz Jahanianbool Sema::CheckObjCARCUnavailableWeakConversion(QualType castType, 32687a084ec568f8336ec6f10011d0118a6b19e253cbFariborz Jahanian QualType exprType) { 32697a084ec568f8336ec6f10011d0118a6b19e253cbFariborz Jahanian QualType canCastType = 32707a084ec568f8336ec6f10011d0118a6b19e253cbFariborz Jahanian Context.getCanonicalType(castType).getUnqualifiedType(); 32717a084ec568f8336ec6f10011d0118a6b19e253cbFariborz Jahanian QualType canExprType = 32727a084ec568f8336ec6f10011d0118a6b19e253cbFariborz Jahanian Context.getCanonicalType(exprType).getUnqualifiedType(); 32737a084ec568f8336ec6f10011d0118a6b19e253cbFariborz Jahanian if (isa<ObjCObjectPointerType>(canCastType) && 32747a084ec568f8336ec6f10011d0118a6b19e253cbFariborz Jahanian castType.getObjCLifetime() == Qualifiers::OCL_Weak && 32757a084ec568f8336ec6f10011d0118a6b19e253cbFariborz Jahanian canExprType->isObjCObjectPointerType()) { 32767a084ec568f8336ec6f10011d0118a6b19e253cbFariborz Jahanian if (const ObjCObjectPointerType *ObjT = 32777a084ec568f8336ec6f10011d0118a6b19e253cbFariborz Jahanian canExprType->getAs<ObjCObjectPointerType>()) 3278a8eaf008e92759142982f7b40720b2b2674bd663Richard Smith if (const ObjCInterfaceDecl *ObjI = ObjT->getInterfaceDecl()) 3279a8eaf008e92759142982f7b40720b2b2674bd663Richard Smith return !ObjI->isArcWeakrefUnavailable(); 32807a084ec568f8336ec6f10011d0118a6b19e253cbFariborz Jahanian } 32817a084ec568f8336ec6f10011d0118a6b19e253cbFariborz Jahanian return true; 32827a084ec568f8336ec6f10011d0118a6b19e253cbFariborz Jahanian} 32837a084ec568f8336ec6f10011d0118a6b19e253cbFariborz Jahanian 32847e5e5f4cc36fe50f46ad76dca7a266434c94f475John McCall/// Look for an ObjCReclaimReturnedObject cast and destroy it. 32857e5e5f4cc36fe50f46ad76dca7a266434c94f475John McCallstatic Expr *maybeUndoReclaimObject(Expr *e) { 32867e5e5f4cc36fe50f46ad76dca7a266434c94f475John McCall // For now, we just undo operands that are *immediately* reclaim 32877e5e5f4cc36fe50f46ad76dca7a266434c94f475John McCall // expressions, which prevents the vast majority of potential 32887e5e5f4cc36fe50f46ad76dca7a266434c94f475John McCall // problems here. To catch them all, we'd need to rebuild arbitrary 32897e5e5f4cc36fe50f46ad76dca7a266434c94f475John McCall // value-propagating subexpressions --- we can't reliably rebuild 32907e5e5f4cc36fe50f46ad76dca7a266434c94f475John McCall // in-place because of expression sharing. 32917e5e5f4cc36fe50f46ad76dca7a266434c94f475John McCall if (ImplicitCastExpr *ice = dyn_cast<ImplicitCastExpr>(e)) 329233e56f3273457bfa22c7c50bc46cf5a18216863dJohn McCall if (ice->getCastKind() == CK_ARCReclaimReturnedObject) 32937e5e5f4cc36fe50f46ad76dca7a266434c94f475John McCall return ice->getSubExpr(); 32947e5e5f4cc36fe50f46ad76dca7a266434c94f475John McCall 32957e5e5f4cc36fe50f46ad76dca7a266434c94f475John McCall return e; 32967e5e5f4cc36fe50f46ad76dca7a266434c94f475John McCall} 32977e5e5f4cc36fe50f46ad76dca7a266434c94f475John McCall 3298f85e193739c953358c865005855253af4f68a497John McCallExprResult Sema::BuildObjCBridgedCast(SourceLocation LParenLoc, 3299f85e193739c953358c865005855253af4f68a497John McCall ObjCBridgeCastKind Kind, 3300f85e193739c953358c865005855253af4f68a497John McCall SourceLocation BridgeKeywordLoc, 3301f85e193739c953358c865005855253af4f68a497John McCall TypeSourceInfo *TSInfo, 3302f85e193739c953358c865005855253af4f68a497John McCall Expr *SubExpr) { 33034906cf97fb6b7aebf5b1b8b99762f0f8fe1f15eaJohn McCall ExprResult SubResult = UsualUnaryConversions(SubExpr); 33044906cf97fb6b7aebf5b1b8b99762f0f8fe1f15eaJohn McCall if (SubResult.isInvalid()) return ExprError(); 33054906cf97fb6b7aebf5b1b8b99762f0f8fe1f15eaJohn McCall SubExpr = SubResult.take(); 33064906cf97fb6b7aebf5b1b8b99762f0f8fe1f15eaJohn McCall 3307f85e193739c953358c865005855253af4f68a497John McCall QualType T = TSInfo->getType(); 3308f85e193739c953358c865005855253af4f68a497John McCall QualType FromType = SubExpr->getType(); 3309f85e193739c953358c865005855253af4f68a497John McCall 33101d9b3b25f7ac0d0195bba6b507a684fe5e7943eeJohn McCall CastKind CK; 33111d9b3b25f7ac0d0195bba6b507a684fe5e7943eeJohn McCall 3312f85e193739c953358c865005855253af4f68a497John McCall bool MustConsume = false; 3313f85e193739c953358c865005855253af4f68a497John McCall if (T->isDependentType() || SubExpr->isTypeDependent()) { 3314f85e193739c953358c865005855253af4f68a497John McCall // Okay: we'll build a dependent expression type. 33151d9b3b25f7ac0d0195bba6b507a684fe5e7943eeJohn McCall CK = CK_Dependent; 3316f85e193739c953358c865005855253af4f68a497John McCall } else if (T->isObjCARCBridgableType() && FromType->isCARCBridgableType()) { 3317f85e193739c953358c865005855253af4f68a497John McCall // Casting CF -> id 33181d9b3b25f7ac0d0195bba6b507a684fe5e7943eeJohn McCall CK = (T->isBlockPointerType() ? CK_AnyPointerToBlockPointerCast 33191d9b3b25f7ac0d0195bba6b507a684fe5e7943eeJohn McCall : CK_CPointerToObjCPointerCast); 3320f85e193739c953358c865005855253af4f68a497John McCall switch (Kind) { 3321f85e193739c953358c865005855253af4f68a497John McCall case OBC_Bridge: 3322f85e193739c953358c865005855253af4f68a497John McCall break; 3323f85e193739c953358c865005855253af4f68a497John McCall 332452b6236427e7b608eadaac2bf8f5a24dd16a1130Fariborz Jahanian case OBC_BridgeRetained: { 3325684190b8dbe5258f4708ffbd816b8c5ee5b3502dArgyrios Kyrtzidis bool br = isKnownName("CFBridgingRelease"); 3326f85e193739c953358c865005855253af4f68a497John McCall Diag(BridgeKeywordLoc, diag::err_arc_bridge_cast_wrong_kind) 3327f85e193739c953358c865005855253af4f68a497John McCall << 2 3328f85e193739c953358c865005855253af4f68a497John McCall << FromType 3329f85e193739c953358c865005855253af4f68a497John McCall << (T->isBlockPointerType()? 1 : 0) 3330f85e193739c953358c865005855253af4f68a497John McCall << T 3331f85e193739c953358c865005855253af4f68a497John McCall << SubExpr->getSourceRange() 3332f85e193739c953358c865005855253af4f68a497John McCall << Kind; 3333f85e193739c953358c865005855253af4f68a497John McCall Diag(BridgeKeywordLoc, diag::note_arc_bridge) 3334f85e193739c953358c865005855253af4f68a497John McCall << FixItHint::CreateReplacement(BridgeKeywordLoc, "__bridge"); 3335f85e193739c953358c865005855253af4f68a497John McCall Diag(BridgeKeywordLoc, diag::note_arc_bridge_transfer) 333652b6236427e7b608eadaac2bf8f5a24dd16a1130Fariborz Jahanian << FromType << br 3337f85e193739c953358c865005855253af4f68a497John McCall << FixItHint::CreateReplacement(BridgeKeywordLoc, 333852b6236427e7b608eadaac2bf8f5a24dd16a1130Fariborz Jahanian br ? "CFBridgingRelease " 333952b6236427e7b608eadaac2bf8f5a24dd16a1130Fariborz Jahanian : "__bridge_transfer "); 3340f85e193739c953358c865005855253af4f68a497John McCall 3341f85e193739c953358c865005855253af4f68a497John McCall Kind = OBC_Bridge; 3342f85e193739c953358c865005855253af4f68a497John McCall break; 334352b6236427e7b608eadaac2bf8f5a24dd16a1130Fariborz Jahanian } 3344f85e193739c953358c865005855253af4f68a497John McCall 3345f85e193739c953358c865005855253af4f68a497John McCall case OBC_BridgeTransfer: 3346f85e193739c953358c865005855253af4f68a497John McCall // We must consume the Objective-C object produced by the cast. 3347f85e193739c953358c865005855253af4f68a497John McCall MustConsume = true; 3348f85e193739c953358c865005855253af4f68a497John McCall break; 3349f85e193739c953358c865005855253af4f68a497John McCall } 3350f85e193739c953358c865005855253af4f68a497John McCall } else if (T->isCARCBridgableType() && FromType->isObjCARCBridgableType()) { 3351f85e193739c953358c865005855253af4f68a497John McCall // Okay: id -> CF 33521d9b3b25f7ac0d0195bba6b507a684fe5e7943eeJohn McCall CK = CK_BitCast; 3353f85e193739c953358c865005855253af4f68a497John McCall switch (Kind) { 3354f85e193739c953358c865005855253af4f68a497John McCall case OBC_Bridge: 33557e5e5f4cc36fe50f46ad76dca7a266434c94f475John McCall // Reclaiming a value that's going to be __bridge-casted to CF 33567e5e5f4cc36fe50f46ad76dca7a266434c94f475John McCall // is very dangerous, so we don't do it. 33577e5e5f4cc36fe50f46ad76dca7a266434c94f475John McCall SubExpr = maybeUndoReclaimObject(SubExpr); 3358f85e193739c953358c865005855253af4f68a497John McCall break; 3359f85e193739c953358c865005855253af4f68a497John McCall 3360f85e193739c953358c865005855253af4f68a497John McCall case OBC_BridgeRetained: 3361f85e193739c953358c865005855253af4f68a497John McCall // Produce the object before casting it. 3362f85e193739c953358c865005855253af4f68a497John McCall SubExpr = ImplicitCastExpr::Create(Context, FromType, 336333e56f3273457bfa22c7c50bc46cf5a18216863dJohn McCall CK_ARCProduceObject, 3364f85e193739c953358c865005855253af4f68a497John McCall SubExpr, 0, VK_RValue); 3365f85e193739c953358c865005855253af4f68a497John McCall break; 3366f85e193739c953358c865005855253af4f68a497John McCall 336752b6236427e7b608eadaac2bf8f5a24dd16a1130Fariborz Jahanian case OBC_BridgeTransfer: { 3368684190b8dbe5258f4708ffbd816b8c5ee5b3502dArgyrios Kyrtzidis bool br = isKnownName("CFBridgingRetain"); 3369f85e193739c953358c865005855253af4f68a497John McCall Diag(BridgeKeywordLoc, diag::err_arc_bridge_cast_wrong_kind) 3370f85e193739c953358c865005855253af4f68a497John McCall << (FromType->isBlockPointerType()? 1 : 0) 3371f85e193739c953358c865005855253af4f68a497John McCall << FromType 3372f85e193739c953358c865005855253af4f68a497John McCall << 2 3373f85e193739c953358c865005855253af4f68a497John McCall << T 3374f85e193739c953358c865005855253af4f68a497John McCall << SubExpr->getSourceRange() 3375f85e193739c953358c865005855253af4f68a497John McCall << Kind; 3376f85e193739c953358c865005855253af4f68a497John McCall 3377f85e193739c953358c865005855253af4f68a497John McCall Diag(BridgeKeywordLoc, diag::note_arc_bridge) 3378f85e193739c953358c865005855253af4f68a497John McCall << FixItHint::CreateReplacement(BridgeKeywordLoc, "__bridge "); 3379f85e193739c953358c865005855253af4f68a497John McCall Diag(BridgeKeywordLoc, diag::note_arc_bridge_retained) 338052b6236427e7b608eadaac2bf8f5a24dd16a1130Fariborz Jahanian << T << br 338152b6236427e7b608eadaac2bf8f5a24dd16a1130Fariborz Jahanian << FixItHint::CreateReplacement(BridgeKeywordLoc, 338252b6236427e7b608eadaac2bf8f5a24dd16a1130Fariborz Jahanian br ? "CFBridgingRetain " : "__bridge_retained"); 3383f85e193739c953358c865005855253af4f68a497John McCall 3384f85e193739c953358c865005855253af4f68a497John McCall Kind = OBC_Bridge; 3385f85e193739c953358c865005855253af4f68a497John McCall break; 3386f85e193739c953358c865005855253af4f68a497John McCall } 338752b6236427e7b608eadaac2bf8f5a24dd16a1130Fariborz Jahanian } 3388f85e193739c953358c865005855253af4f68a497John McCall } else { 3389f85e193739c953358c865005855253af4f68a497John McCall Diag(LParenLoc, diag::err_arc_bridge_cast_incompatible) 3390f85e193739c953358c865005855253af4f68a497John McCall << FromType << T << Kind 3391f85e193739c953358c865005855253af4f68a497John McCall << SubExpr->getSourceRange() 3392f85e193739c953358c865005855253af4f68a497John McCall << TSInfo->getTypeLoc().getSourceRange(); 3393f85e193739c953358c865005855253af4f68a497John McCall return ExprError(); 3394f85e193739c953358c865005855253af4f68a497John McCall } 3395f85e193739c953358c865005855253af4f68a497John McCall 33961d9b3b25f7ac0d0195bba6b507a684fe5e7943eeJohn McCall Expr *Result = new (Context) ObjCBridgedCastExpr(LParenLoc, Kind, CK, 3397f85e193739c953358c865005855253af4f68a497John McCall BridgeKeywordLoc, 3398f85e193739c953358c865005855253af4f68a497John McCall TSInfo, SubExpr); 3399f85e193739c953358c865005855253af4f68a497John McCall 3400f85e193739c953358c865005855253af4f68a497John McCall if (MustConsume) { 3401f85e193739c953358c865005855253af4f68a497John McCall ExprNeedsCleanups = true; 340233e56f3273457bfa22c7c50bc46cf5a18216863dJohn McCall Result = ImplicitCastExpr::Create(Context, T, CK_ARCConsumeObject, Result, 3403f85e193739c953358c865005855253af4f68a497John McCall 0, VK_RValue); 3404f85e193739c953358c865005855253af4f68a497John McCall } 3405f85e193739c953358c865005855253af4f68a497John McCall 3406f85e193739c953358c865005855253af4f68a497John McCall return Result; 3407f85e193739c953358c865005855253af4f68a497John McCall} 3408f85e193739c953358c865005855253af4f68a497John McCall 3409f85e193739c953358c865005855253af4f68a497John McCallExprResult Sema::ActOnObjCBridgedCast(Scope *S, 3410f85e193739c953358c865005855253af4f68a497John McCall SourceLocation LParenLoc, 3411f85e193739c953358c865005855253af4f68a497John McCall ObjCBridgeCastKind Kind, 3412f85e193739c953358c865005855253af4f68a497John McCall SourceLocation BridgeKeywordLoc, 3413f85e193739c953358c865005855253af4f68a497John McCall ParsedType Type, 3414f85e193739c953358c865005855253af4f68a497John McCall SourceLocation RParenLoc, 3415f85e193739c953358c865005855253af4f68a497John McCall Expr *SubExpr) { 3416f85e193739c953358c865005855253af4f68a497John McCall TypeSourceInfo *TSInfo = 0; 3417f85e193739c953358c865005855253af4f68a497John McCall QualType T = GetTypeFromParser(Type, &TSInfo); 3418f85e193739c953358c865005855253af4f68a497John McCall if (!TSInfo) 3419f85e193739c953358c865005855253af4f68a497John McCall TSInfo = Context.getTrivialTypeSourceInfo(T, LParenLoc); 3420f85e193739c953358c865005855253af4f68a497John McCall return BuildObjCBridgedCast(LParenLoc, Kind, BridgeKeywordLoc, TSInfo, 3421f85e193739c953358c865005855253af4f68a497John McCall SubExpr); 3422f85e193739c953358c865005855253af4f68a497John McCall} 3423