SemaExprObjC.cpp revision c8505ad9182c3ddcfda42bee250b2c32dd1f3219
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" 15e737f5041a36d0befb39ffeed8d50ba15916d3daDouglas Gregor#include "clang/Sema/Lookup.h" 165f1e0942a32657b625702aa52f82430d0120f424John McCall#include "clang/Sema/Scope.h" 1726743b20e4a8c2a986e6453f0c38beba0afef633John McCall#include "clang/Sema/ScopeInfo.h" 18e737f5041a36d0befb39ffeed8d50ba15916d3daDouglas Gregor#include "clang/Sema/Initialization.h" 1985a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner#include "clang/AST/ASTContext.h" 2085a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner#include "clang/AST/DeclObjC.h" 21f494b579b22f9950f5af021f0bf9879a91bb8b41Steve Naroff#include "clang/AST/ExprObjC.h" 22f85e193739c953358c865005855253af4f68a497John McCall#include "clang/AST/StmtVisitor.h" 232725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor#include "clang/AST/TypeLoc.h" 2439c28bbbf235533e9ae7d06fb9b13371dfcc542dChris Lattner#include "llvm/ADT/SmallString.h" 2561f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff#include "clang/Lex/Preprocessor.h" 2661f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff 2785a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattnerusing namespace clang; 2826743b20e4a8c2a986e6453f0c38beba0afef633John McCallusing namespace sema; 2985a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner 30f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCallExprResult Sema::ParseObjCStringLiteral(SourceLocation *AtLocs, 31f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall Expr **strings, 32f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall unsigned NumStrings) { 3339c28bbbf235533e9ae7d06fb9b13371dfcc542dChris Lattner StringLiteral **Strings = reinterpret_cast<StringLiteral**>(strings); 3439c28bbbf235533e9ae7d06fb9b13371dfcc542dChris Lattner 35f4b136fb40aeedeaaa6ce7cdff22f375eb76c47bChris Lattner // Most ObjC strings are formed out of a single piece. However, we *can* 36f4b136fb40aeedeaaa6ce7cdff22f375eb76c47bChris Lattner // have strings formed out of multiple @ strings with multiple pptokens in 37f4b136fb40aeedeaaa6ce7cdff22f375eb76c47bChris Lattner // each one, e.g. @"foo" "bar" @"baz" "qux" which need to be turned into one 38f4b136fb40aeedeaaa6ce7cdff22f375eb76c47bChris Lattner // StringLiteral for ObjCStringLiteral to hold onto. 3939c28bbbf235533e9ae7d06fb9b13371dfcc542dChris Lattner StringLiteral *S = Strings[0]; 401eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 41f4b136fb40aeedeaaa6ce7cdff22f375eb76c47bChris Lattner // If we have a multi-part string, merge it all together. 42f4b136fb40aeedeaaa6ce7cdff22f375eb76c47bChris Lattner if (NumStrings != 1) { 4385a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner // Concatenate objc strings. 4439c28bbbf235533e9ae7d06fb9b13371dfcc542dChris Lattner llvm::SmallString<128> StrBuf; 4539c28bbbf235533e9ae7d06fb9b13371dfcc542dChris Lattner llvm::SmallVector<SourceLocation, 8> StrLocs; 461eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 47726e168dc09fb23f53c7b004f8e919421ee91806Chris Lattner for (unsigned i = 0; i != NumStrings; ++i) { 4839c28bbbf235533e9ae7d06fb9b13371dfcc542dChris Lattner S = Strings[i]; 491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5039c28bbbf235533e9ae7d06fb9b13371dfcc542dChris Lattner // ObjC strings can't be wide. 51f4b136fb40aeedeaaa6ce7cdff22f375eb76c47bChris Lattner if (S->isWide()) { 52f4b136fb40aeedeaaa6ce7cdff22f375eb76c47bChris Lattner Diag(S->getLocStart(), diag::err_cfstring_literal_not_string_constant) 53f4b136fb40aeedeaaa6ce7cdff22f375eb76c47bChris Lattner << S->getSourceRange(); 54f4b136fb40aeedeaaa6ce7cdff22f375eb76c47bChris Lattner return true; 55f4b136fb40aeedeaaa6ce7cdff22f375eb76c47bChris Lattner } 561eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 572f4eaef37476ae6891ede8ba215d0f6fd093629bBenjamin Kramer // Append the string. 582f4eaef37476ae6891ede8ba215d0f6fd093629bBenjamin Kramer StrBuf += S->getString(); 591eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6039c28bbbf235533e9ae7d06fb9b13371dfcc542dChris Lattner // Get the locations of the string tokens. 6139c28bbbf235533e9ae7d06fb9b13371dfcc542dChris Lattner StrLocs.append(S->tokloc_begin(), S->tokloc_end()); 6285a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner } 631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6439c28bbbf235533e9ae7d06fb9b13371dfcc542dChris Lattner // Create the aggregate string with the appropriate content and location 6539c28bbbf235533e9ae7d06fb9b13371dfcc542dChris Lattner // information. 6665aa6885818d4b4eea2e5a9d12085b2398148662Jay Foad S = StringLiteral::Create(Context, StrBuf, 673e2193ce5feb2feb092e5ae615e85148e06e9fd2Anders Carlsson /*Wide=*/false, /*Pascal=*/false, 682085fd6cd22ec5c268175251db10d7c60caf7aaaChris Lattner Context.getPointerType(Context.CharTy), 6939c28bbbf235533e9ae7d06fb9b13371dfcc542dChris Lattner &StrLocs[0], StrLocs.size()); 7085a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner } 711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 72690398188ea5b428f06aa13c7d4ce6eb741ad4f9Chris Lattner // Verify that this composite string is acceptable for ObjC strings. 73690398188ea5b428f06aa13c7d4ce6eb741ad4f9Chris Lattner if (CheckObjCString(S)) 7485a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner return true; 75a0af1fe67da29343cd182c51cd48d91b740ecef2Chris Lattner 76a0af1fe67da29343cd182c51cd48d91b740ecef2Chris Lattner // Initialize the constant string interface lazily. This assumes 77d9fd7647e286723d100db4cfeab31ec022eec629Steve Naroff // the NSString interface is seen in this translation unit. Note: We 78d9fd7647e286723d100db4cfeab31ec022eec629Steve Naroff // don't use NSConstantString, since the runtime team considers this 79d9fd7647e286723d100db4cfeab31ec022eec629Steve Naroff // interface private (even though it appears in the header files). 80a0af1fe67da29343cd182c51cd48d91b740ecef2Chris Lattner QualType Ty = Context.getObjCConstantStringInterface(); 81a0af1fe67da29343cd182c51cd48d91b740ecef2Chris Lattner if (!Ty.isNull()) { 8214108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff Ty = Context.getObjCObjectPointerType(Ty); 838a4377697161c5087e27cc40d6e0682f0cd1fa20Fariborz Jahanian } else if (getLangOptions().NoConstantCFStrings) { 844c73307c74764ba99e1379677fe92af72f676531Fariborz Jahanian IdentifierInfo *NSIdent=0; 854c73307c74764ba99e1379677fe92af72f676531Fariborz Jahanian std::string StringClass(getLangOptions().ObjCConstantStringClass); 864c73307c74764ba99e1379677fe92af72f676531Fariborz Jahanian 874c73307c74764ba99e1379677fe92af72f676531Fariborz Jahanian if (StringClass.empty()) 884c73307c74764ba99e1379677fe92af72f676531Fariborz Jahanian NSIdent = &Context.Idents.get("NSConstantString"); 894c73307c74764ba99e1379677fe92af72f676531Fariborz Jahanian else 904c73307c74764ba99e1379677fe92af72f676531Fariborz Jahanian NSIdent = &Context.Idents.get(StringClass); 914c73307c74764ba99e1379677fe92af72f676531Fariborz Jahanian 928a4377697161c5087e27cc40d6e0682f0cd1fa20Fariborz Jahanian NamedDecl *IF = LookupSingleName(TUScope, NSIdent, AtLocs[0], 938a4377697161c5087e27cc40d6e0682f0cd1fa20Fariborz Jahanian LookupOrdinaryName); 948a4377697161c5087e27cc40d6e0682f0cd1fa20Fariborz Jahanian if (ObjCInterfaceDecl *StrIF = dyn_cast_or_null<ObjCInterfaceDecl>(IF)) { 958a4377697161c5087e27cc40d6e0682f0cd1fa20Fariborz Jahanian Context.setObjCConstantStringInterface(StrIF); 968a4377697161c5087e27cc40d6e0682f0cd1fa20Fariborz Jahanian Ty = Context.getObjCConstantStringInterface(); 978a4377697161c5087e27cc40d6e0682f0cd1fa20Fariborz Jahanian Ty = Context.getObjCObjectPointerType(Ty); 988a4377697161c5087e27cc40d6e0682f0cd1fa20Fariborz Jahanian } else { 998a4377697161c5087e27cc40d6e0682f0cd1fa20Fariborz Jahanian // If there is no NSConstantString interface defined then treat this 1008a4377697161c5087e27cc40d6e0682f0cd1fa20Fariborz Jahanian // as error and recover from it. 1018a4377697161c5087e27cc40d6e0682f0cd1fa20Fariborz Jahanian Diag(S->getLocStart(), diag::err_no_nsconstant_string_class) << NSIdent 1028a4377697161c5087e27cc40d6e0682f0cd1fa20Fariborz Jahanian << S->getSourceRange(); 1038a4377697161c5087e27cc40d6e0682f0cd1fa20Fariborz Jahanian Ty = Context.getObjCIdType(); 1048a4377697161c5087e27cc40d6e0682f0cd1fa20Fariborz Jahanian } 10513fd7e5111032f54b538dd66d035b0ccc1f82467Chris Lattner } else { 106d9fd7647e286723d100db4cfeab31ec022eec629Steve Naroff IdentifierInfo *NSIdent = &Context.Idents.get("NSString"); 107c83c6874e3bf1432d3df5e8d3530f8561ff5441fDouglas Gregor NamedDecl *IF = LookupSingleName(TUScope, NSIdent, AtLocs[0], 108c83c6874e3bf1432d3df5e8d3530f8561ff5441fDouglas Gregor LookupOrdinaryName); 109a0af1fe67da29343cd182c51cd48d91b740ecef2Chris Lattner if (ObjCInterfaceDecl *StrIF = dyn_cast_or_null<ObjCInterfaceDecl>(IF)) { 110a0af1fe67da29343cd182c51cd48d91b740ecef2Chris Lattner Context.setObjCConstantStringInterface(StrIF); 111a0af1fe67da29343cd182c51cd48d91b740ecef2Chris Lattner Ty = Context.getObjCConstantStringInterface(); 11214108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff Ty = Context.getObjCObjectPointerType(Ty); 113a0af1fe67da29343cd182c51cd48d91b740ecef2Chris Lattner } else { 114d9fd7647e286723d100db4cfeab31ec022eec629Steve Naroff // If there is no NSString interface defined then treat constant 115a0af1fe67da29343cd182c51cd48d91b740ecef2Chris Lattner // strings as untyped objects and let the runtime figure it out later. 116a0af1fe67da29343cd182c51cd48d91b740ecef2Chris Lattner Ty = Context.getObjCIdType(); 117a0af1fe67da29343cd182c51cd48d91b740ecef2Chris Lattner } 11813fd7e5111032f54b538dd66d035b0ccc1f82467Chris Lattner } 1191eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 120f4b136fb40aeedeaaa6ce7cdff22f375eb76c47bChris Lattner return new (Context) ObjCStringLiteral(S, Ty, AtLocs[0]); 12185a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner} 12285a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner 1233b5904ba83fc9b968b1cd6f1ce78d01bfd6e8686Argyrios KyrtzidisExprResult Sema::BuildObjCEncodeExpression(SourceLocation AtLoc, 12481d3466d037dc5844234c7a93dab21a6ad986e7dDouglas Gregor TypeSourceInfo *EncodedTypeInfo, 125fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson SourceLocation RParenLoc) { 12681d3466d037dc5844234c7a93dab21a6ad986e7dDouglas Gregor QualType EncodedType = EncodedTypeInfo->getType(); 127fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson QualType StrTy; 1281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (EncodedType->isDependentType()) 129fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson StrTy = Context.DependentTy; 130fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson else { 1316c91615e5d67d59e752037beb475c4b827431172Fariborz Jahanian if (!EncodedType->getAsArrayTypeUnsafe() && //// Incomplete array is handled. 1326c91615e5d67d59e752037beb475c4b827431172Fariborz Jahanian !EncodedType->isVoidType()) // void is handled too. 1333b5904ba83fc9b968b1cd6f1ce78d01bfd6e8686Argyrios Kyrtzidis if (RequireCompleteType(AtLoc, EncodedType, 1343b5904ba83fc9b968b1cd6f1ce78d01bfd6e8686Argyrios Kyrtzidis PDiag(diag::err_incomplete_type_objc_at_encode) 1353b5904ba83fc9b968b1cd6f1ce78d01bfd6e8686Argyrios Kyrtzidis << EncodedTypeInfo->getTypeLoc().getSourceRange())) 1363b5904ba83fc9b968b1cd6f1ce78d01bfd6e8686Argyrios Kyrtzidis return ExprError(); 1373b5904ba83fc9b968b1cd6f1ce78d01bfd6e8686Argyrios Kyrtzidis 138fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson std::string Str; 139fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson Context.getObjCEncodingForType(EncodedType, Str); 140fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson 141fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson // The type of @encode is the same as the type of the corresponding string, 142fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson // which is an array type. 143fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson StrTy = Context.CharTy; 144fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson // A C++ string literal has a const-qualified element type (C++ 2.13.4p1). 1454b7a834e0fecddd9eaf1f4567867c718e4eebf50John McCall if (getLangOptions().CPlusPlus || getLangOptions().ConstStrings) 146fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson StrTy.addConst(); 147fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson StrTy = Context.getConstantArrayType(StrTy, llvm::APInt(32, Str.size()+1), 148fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson ArrayType::Normal, 0); 149fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson } 1501eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 15181d3466d037dc5844234c7a93dab21a6ad986e7dDouglas Gregor return new (Context) ObjCEncodeExpr(StrTy, EncodedTypeInfo, AtLoc, RParenLoc); 152fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson} 153fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson 154f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCallExprResult Sema::ParseObjCEncodeExpression(SourceLocation AtLoc, 155f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall SourceLocation EncodeLoc, 156f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall SourceLocation LParenLoc, 157f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall ParsedType ty, 158f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall SourceLocation RParenLoc) { 159e8661906d49ef6c9694a9cc845ca62a85dbc016dArgyrios Kyrtzidis // FIXME: Preserve type source info ? 16081d3466d037dc5844234c7a93dab21a6ad986e7dDouglas Gregor TypeSourceInfo *TInfo; 16181d3466d037dc5844234c7a93dab21a6ad986e7dDouglas Gregor QualType EncodedType = GetTypeFromParser(ty, &TInfo); 16281d3466d037dc5844234c7a93dab21a6ad986e7dDouglas Gregor if (!TInfo) 16381d3466d037dc5844234c7a93dab21a6ad986e7dDouglas Gregor TInfo = Context.getTrivialTypeSourceInfo(EncodedType, 16481d3466d037dc5844234c7a93dab21a6ad986e7dDouglas Gregor PP.getLocForEndOfToken(LParenLoc)); 16585a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner 16681d3466d037dc5844234c7a93dab21a6ad986e7dDouglas Gregor return BuildObjCEncodeExpression(AtLoc, TInfo, RParenLoc); 16785a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner} 16885a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner 169f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCallExprResult Sema::ParseObjCSelectorExpression(Selector Sel, 170f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall SourceLocation AtLoc, 171f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall SourceLocation SelLoc, 172f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall SourceLocation LParenLoc, 173f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall SourceLocation RParenLoc) { 1741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump ObjCMethodDecl *Method = LookupInstanceMethodInGlobalPool(Sel, 1756b308f6dc7d8f1581c52095f435c0e1284b111d8Fariborz Jahanian SourceRange(LParenLoc, RParenLoc), false, false); 1767ff22ded2221f442b1f8ff78172938d04ec8c926Fariborz Jahanian if (!Method) 1777ff22ded2221f442b1f8ff78172938d04ec8c926Fariborz Jahanian Method = LookupFactoryMethodInGlobalPool(Sel, 1787ff22ded2221f442b1f8ff78172938d04ec8c926Fariborz Jahanian SourceRange(LParenLoc, RParenLoc)); 1797ff22ded2221f442b1f8ff78172938d04ec8c926Fariborz Jahanian if (!Method) 1807ff22ded2221f442b1f8ff78172938d04ec8c926Fariborz Jahanian Diag(SelLoc, diag::warn_undeclared_selector) << Sel; 1817ff22ded2221f442b1f8ff78172938d04ec8c926Fariborz Jahanian 1823fe104154dd2e8ffb351142d74f308938b5c99bfFariborz Jahanian llvm::DenseMap<Selector, SourceLocation>::iterator Pos 1833fe104154dd2e8ffb351142d74f308938b5c99bfFariborz Jahanian = ReferencedSelectors.find(Sel); 1843fe104154dd2e8ffb351142d74f308938b5c99bfFariborz Jahanian if (Pos == ReferencedSelectors.end()) 1853fe104154dd2e8ffb351142d74f308938b5c99bfFariborz Jahanian ReferencedSelectors.insert(std::make_pair(Sel, SelLoc)); 1863fe104154dd2e8ffb351142d74f308938b5c99bfFariborz Jahanian 187f85e193739c953358c865005855253af4f68a497John McCall // In ARC, forbid the user from using @selector for 188f85e193739c953358c865005855253af4f68a497John McCall // retain/release/autorelease/dealloc/retainCount. 189f85e193739c953358c865005855253af4f68a497John McCall if (getLangOptions().ObjCAutoRefCount) { 190f85e193739c953358c865005855253af4f68a497John McCall switch (Sel.getMethodFamily()) { 191f85e193739c953358c865005855253af4f68a497John McCall case OMF_retain: 192f85e193739c953358c865005855253af4f68a497John McCall case OMF_release: 193f85e193739c953358c865005855253af4f68a497John McCall case OMF_autorelease: 194f85e193739c953358c865005855253af4f68a497John McCall case OMF_retainCount: 195f85e193739c953358c865005855253af4f68a497John McCall case OMF_dealloc: 196f85e193739c953358c865005855253af4f68a497John McCall Diag(AtLoc, diag::err_arc_illegal_selector) << 197f85e193739c953358c865005855253af4f68a497John McCall Sel << SourceRange(LParenLoc, RParenLoc); 198f85e193739c953358c865005855253af4f68a497John McCall break; 199f85e193739c953358c865005855253af4f68a497John McCall 200f85e193739c953358c865005855253af4f68a497John McCall case OMF_None: 201f85e193739c953358c865005855253af4f68a497John McCall case OMF_alloc: 202f85e193739c953358c865005855253af4f68a497John McCall case OMF_copy: 203f85e193739c953358c865005855253af4f68a497John McCall case OMF_init: 204f85e193739c953358c865005855253af4f68a497John McCall case OMF_mutableCopy: 205f85e193739c953358c865005855253af4f68a497John McCall case OMF_new: 206f85e193739c953358c865005855253af4f68a497John McCall case OMF_self: 207f85e193739c953358c865005855253af4f68a497John McCall break; 208f85e193739c953358c865005855253af4f68a497John McCall } 209f85e193739c953358c865005855253af4f68a497John McCall } 210a0af1fe67da29343cd182c51cd48d91b740ecef2Chris Lattner QualType Ty = Context.getObjCSelType(); 2116d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbar return new (Context) ObjCSelectorExpr(Ty, Sel, AtLoc, RParenLoc); 21285a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner} 21385a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner 214f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCallExprResult Sema::ParseObjCProtocolExpression(IdentifierInfo *ProtocolId, 215f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall SourceLocation AtLoc, 216f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall SourceLocation ProtoLoc, 217f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall SourceLocation LParenLoc, 218f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall SourceLocation RParenLoc) { 219c83c6874e3bf1432d3df5e8d3530f8561ff5441fDouglas Gregor ObjCProtocolDecl* PDecl = LookupProtocol(ProtocolId, ProtoLoc); 22085a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner if (!PDecl) { 2213c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner Diag(ProtoLoc, diag::err_undeclared_protocol) << ProtocolId; 22285a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner return true; 22385a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner } 2241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 225a0af1fe67da29343cd182c51cd48d91b740ecef2Chris Lattner QualType Ty = Context.getObjCProtoType(); 226a0af1fe67da29343cd182c51cd48d91b740ecef2Chris Lattner if (Ty.isNull()) 22785a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner return true; 22814108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff Ty = Context.getObjCObjectPointerType(Ty); 229a0af1fe67da29343cd182c51cd48d91b740ecef2Chris Lattner return new (Context) ObjCProtocolExpr(Ty, PDecl, AtLoc, RParenLoc); 23085a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner} 23185a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner 23226743b20e4a8c2a986e6453f0c38beba0afef633John McCall/// Try to capture an implicit reference to 'self'. 23326743b20e4a8c2a986e6453f0c38beba0afef633John McCallObjCMethodDecl *Sema::tryCaptureObjCSelf() { 23426743b20e4a8c2a986e6453f0c38beba0afef633John McCall // Ignore block scopes: we can capture through them. 23526743b20e4a8c2a986e6453f0c38beba0afef633John McCall DeclContext *DC = CurContext; 23626743b20e4a8c2a986e6453f0c38beba0afef633John McCall while (true) { 23726743b20e4a8c2a986e6453f0c38beba0afef633John McCall if (isa<BlockDecl>(DC)) DC = cast<BlockDecl>(DC)->getDeclContext(); 23826743b20e4a8c2a986e6453f0c38beba0afef633John McCall else if (isa<EnumDecl>(DC)) DC = cast<EnumDecl>(DC)->getDeclContext(); 23926743b20e4a8c2a986e6453f0c38beba0afef633John McCall else break; 24026743b20e4a8c2a986e6453f0c38beba0afef633John McCall } 24126743b20e4a8c2a986e6453f0c38beba0afef633John McCall 24226743b20e4a8c2a986e6453f0c38beba0afef633John McCall // If we're not in an ObjC method, error out. Note that, unlike the 24326743b20e4a8c2a986e6453f0c38beba0afef633John McCall // C++ case, we don't require an instance method --- class methods 24426743b20e4a8c2a986e6453f0c38beba0afef633John McCall // still have a 'self', and we really do still need to capture it! 24526743b20e4a8c2a986e6453f0c38beba0afef633John McCall ObjCMethodDecl *method = dyn_cast<ObjCMethodDecl>(DC); 24626743b20e4a8c2a986e6453f0c38beba0afef633John McCall if (!method) 24726743b20e4a8c2a986e6453f0c38beba0afef633John McCall return 0; 24826743b20e4a8c2a986e6453f0c38beba0afef633John McCall 24926743b20e4a8c2a986e6453f0c38beba0afef633John McCall ImplicitParamDecl *self = method->getSelfDecl(); 25026743b20e4a8c2a986e6453f0c38beba0afef633John McCall assert(self && "capturing 'self' in non-definition?"); 25126743b20e4a8c2a986e6453f0c38beba0afef633John McCall 25226743b20e4a8c2a986e6453f0c38beba0afef633John McCall // Mark that we're closing on 'this' in all the block scopes, if applicable. 25326743b20e4a8c2a986e6453f0c38beba0afef633John McCall for (unsigned idx = FunctionScopes.size() - 1; 25426743b20e4a8c2a986e6453f0c38beba0afef633John McCall isa<BlockScopeInfo>(FunctionScopes[idx]); 2556b5a61b6dc400027fd793dcadceeb9da944a37eaJohn McCall --idx) { 2566b5a61b6dc400027fd793dcadceeb9da944a37eaJohn McCall BlockScopeInfo *blockScope = cast<BlockScopeInfo>(FunctionScopes[idx]); 2576b5a61b6dc400027fd793dcadceeb9da944a37eaJohn McCall unsigned &captureIndex = blockScope->CaptureMap[self]; 2586b5a61b6dc400027fd793dcadceeb9da944a37eaJohn McCall if (captureIndex) break; 2596b5a61b6dc400027fd793dcadceeb9da944a37eaJohn McCall 2606b5a61b6dc400027fd793dcadceeb9da944a37eaJohn McCall bool nested = isa<BlockScopeInfo>(FunctionScopes[idx-1]); 2616b5a61b6dc400027fd793dcadceeb9da944a37eaJohn McCall blockScope->Captures.push_back( 2626b5a61b6dc400027fd793dcadceeb9da944a37eaJohn McCall BlockDecl::Capture(self, /*byref*/ false, nested, /*copy*/ 0)); 2636b5a61b6dc400027fd793dcadceeb9da944a37eaJohn McCall captureIndex = blockScope->Captures.size(); // +1 2646b5a61b6dc400027fd793dcadceeb9da944a37eaJohn McCall } 26526743b20e4a8c2a986e6453f0c38beba0afef633John McCall 26626743b20e4a8c2a986e6453f0c38beba0afef633John McCall return method; 26726743b20e4a8c2a986e6453f0c38beba0afef633John McCall} 26826743b20e4a8c2a986e6453f0c38beba0afef633John McCall 269926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas GregorQualType Sema::getMessageSendResultType(QualType ReceiverType, 270926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor ObjCMethodDecl *Method, 271926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor bool isClassMessage, bool isSuperMessage) { 272926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor assert(Method && "Must have a method"); 273926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor if (!Method->hasRelatedResultType()) 274926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor return Method->getSendResultType(); 275926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor 276926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor // If a method has a related return type: 277926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor // - if the method found is an instance method, but the message send 278926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor // was a class message send, T is the declared return type of the method 279926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor // found 280926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor if (Method->isInstanceMethod() && isClassMessage) 281926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor return Method->getSendResultType(); 282926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor 283926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor // - if the receiver is super, T is a pointer to the class of the 284926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor // enclosing method definition 285926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor if (isSuperMessage) { 286926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor if (ObjCMethodDecl *CurMethod = getCurMethodDecl()) 287926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor if (ObjCInterfaceDecl *Class = CurMethod->getClassInterface()) 288926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor return Context.getObjCObjectPointerType( 289926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor Context.getObjCInterfaceType(Class)); 290926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor } 291926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor 292926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor // - if the receiver is the name of a class U, T is a pointer to U 293926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor if (ReceiverType->getAs<ObjCInterfaceType>() || 294926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor ReceiverType->isObjCQualifiedInterfaceType()) 295926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor return Context.getObjCObjectPointerType(ReceiverType); 296926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor // - if the receiver is of type Class or qualified Class type, 297926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor // T is the declared return type of the method. 298926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor if (ReceiverType->isObjCClassType() || 299926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor ReceiverType->isObjCQualifiedClassType()) 300926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor return Method->getSendResultType(); 301926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor 302926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor // - if the receiver is id, qualified id, Class, or qualified Class, T 303926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor // is the receiver type, otherwise 304926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor // - T is the type of the receiver expression. 305926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor return ReceiverType; 306926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor} 307926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor 308926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregorvoid Sema::EmitRelatedResultTypeNote(const Expr *E) { 309926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor E = E->IgnoreParenImpCasts(); 310926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor const ObjCMessageExpr *MsgSend = dyn_cast<ObjCMessageExpr>(E); 311926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor if (!MsgSend) 312926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor return; 313926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor 314926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor const ObjCMethodDecl *Method = MsgSend->getMethodDecl(); 315926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor if (!Method) 316926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor return; 317926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor 318926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor if (!Method->hasRelatedResultType()) 319926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor return; 320926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor 321926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor if (Context.hasSameUnqualifiedType(Method->getResultType() 322926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor .getNonReferenceType(), 323926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor MsgSend->getType())) 324926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor return; 325926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor 326926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor Diag(Method->getLocation(), diag::note_related_result_type_inferred) 327926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor << Method->isInstanceMethod() << Method->getSelector() 328926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor << MsgSend->getType(); 329926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor} 33026743b20e4a8c2a986e6453f0c38beba0afef633John McCall 331926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregorbool Sema::CheckMessageArgumentTypes(QualType ReceiverType, 332926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor Expr **Args, unsigned NumArgs, 3331eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Selector Sel, ObjCMethodDecl *Method, 334926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor bool isClassMessage, bool isSuperMessage, 335637cebb67c59765e1412c589550c8c9ba001baebDaniel Dunbar SourceLocation lbrac, SourceLocation rbrac, 336f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall QualType &ReturnType, ExprValueKind &VK) { 337637cebb67c59765e1412c589550c8c9ba001baebDaniel Dunbar if (!Method) { 3386660c8a4cc2115929d92be83bbc54c307002a321Daniel Dunbar // Apply default argument promotion as for (C99 6.5.2.2p6). 33992e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor for (unsigned i = 0; i != NumArgs; i++) { 34092e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor if (Args[i]->isTypeDependent()) 34192e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor continue; 34292e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor 343429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley ExprResult Result = DefaultArgumentPromotion(Args[i]); 344429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if (Result.isInvalid()) 345429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley return true; 346429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley Args[i] = Result.take(); 34792e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor } 3486660c8a4cc2115929d92be83bbc54c307002a321Daniel Dunbar 349f85e193739c953358c865005855253af4f68a497John McCall unsigned DiagID; 350f85e193739c953358c865005855253af4f68a497John McCall if (getLangOptions().ObjCAutoRefCount) 351f85e193739c953358c865005855253af4f68a497John McCall DiagID = diag::err_arc_method_not_found; 352f85e193739c953358c865005855253af4f68a497John McCall else 353f85e193739c953358c865005855253af4f68a497John McCall DiagID = isClassMessage ? diag::warn_class_method_not_found 354f85e193739c953358c865005855253af4f68a497John McCall : diag::warn_inst_method_not_found; 355077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner Diag(lbrac, DiagID) 356077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner << Sel << isClassMessage << SourceRange(lbrac, rbrac); 357637cebb67c59765e1412c589550c8c9ba001baebDaniel Dunbar ReturnType = Context.getObjCIdType(); 358f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall VK = VK_RValue; 359637cebb67c59765e1412c589550c8c9ba001baebDaniel Dunbar return false; 360637cebb67c59765e1412c589550c8c9ba001baebDaniel Dunbar } 3611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 362926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor ReturnType = getMessageSendResultType(ReceiverType, Method, isClassMessage, 363926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor isSuperMessage); 364f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall VK = Expr::getValueKindForType(Method->getResultType()); 3651eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 36691e19b2029447e75d2c7730ff888cc396874685bDaniel Dunbar unsigned NumNamedArgs = Sel.getNumArgs(); 3674f4fd92c6c64ecbc65507f63ddd09211f732622cFariborz Jahanian // Method might have more arguments than selector indicates. This is due 3684f4fd92c6c64ecbc65507f63ddd09211f732622cFariborz Jahanian // to addition of c-style arguments in method. 3694f4fd92c6c64ecbc65507f63ddd09211f732622cFariborz Jahanian if (Method->param_size() > Sel.getNumArgs()) 3704f4fd92c6c64ecbc65507f63ddd09211f732622cFariborz Jahanian NumNamedArgs = Method->param_size(); 3714f4fd92c6c64ecbc65507f63ddd09211f732622cFariborz Jahanian // FIXME. This need be cleaned up. 3724f4fd92c6c64ecbc65507f63ddd09211f732622cFariborz Jahanian if (NumArgs < NumNamedArgs) { 373f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall Diag(lbrac, diag::err_typecheck_call_too_few_args) 374f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall << 2 << NumNamedArgs << NumArgs; 3754f4fd92c6c64ecbc65507f63ddd09211f732622cFariborz Jahanian return false; 3764f4fd92c6c64ecbc65507f63ddd09211f732622cFariborz Jahanian } 37791e19b2029447e75d2c7730ff888cc396874685bDaniel Dunbar 378312531a8cd69c562d5687bd69fd334be99d87320Chris Lattner bool IsError = false; 37991e19b2029447e75d2c7730ff888cc396874685bDaniel Dunbar for (unsigned i = 0; i < NumNamedArgs; i++) { 38092e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor // We can't do any type-checking on a type-dependent argument. 38192e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor if (Args[i]->isTypeDependent()) 38292e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor continue; 38392e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor 38485a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner Expr *argExpr = Args[i]; 38592e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor 386688fc9b9b4323a294f5bf4f8a83f7c365edec573Douglas Gregor ParmVarDecl *Param = Method->param_begin()[i]; 38785a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner assert(argExpr && "CheckMessageArgumentTypes(): missing expression"); 3881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 389688fc9b9b4323a294f5bf4f8a83f7c365edec573Douglas Gregor if (RequireCompleteType(argExpr->getSourceRange().getBegin(), 390688fc9b9b4323a294f5bf4f8a83f7c365edec573Douglas Gregor Param->getType(), 391688fc9b9b4323a294f5bf4f8a83f7c365edec573Douglas Gregor PDiag(diag::err_call_incomplete_argument) 392688fc9b9b4323a294f5bf4f8a83f7c365edec573Douglas Gregor << argExpr->getSourceRange())) 393688fc9b9b4323a294f5bf4f8a83f7c365edec573Douglas Gregor return true; 394688fc9b9b4323a294f5bf4f8a83f7c365edec573Douglas Gregor 395745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian InitializedEntity Entity = InitializedEntity::InitializeParameter(Context, 396745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian Param); 3973fa5cae9b3812cab9fab6c042c3329bb70a3d046John McCall ExprResult ArgE = PerformCopyInitialization(Entity, lbrac, Owned(argExpr)); 398688fc9b9b4323a294f5bf4f8a83f7c365edec573Douglas Gregor if (ArgE.isInvalid()) 399688fc9b9b4323a294f5bf4f8a83f7c365edec573Douglas Gregor IsError = true; 400688fc9b9b4323a294f5bf4f8a83f7c365edec573Douglas Gregor else 401688fc9b9b4323a294f5bf4f8a83f7c365edec573Douglas Gregor Args[i] = ArgE.takeAs<Expr>(); 40285a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner } 40391e19b2029447e75d2c7730ff888cc396874685bDaniel Dunbar 40491e19b2029447e75d2c7730ff888cc396874685bDaniel Dunbar // Promote additional arguments to variadic methods. 40591e19b2029447e75d2c7730ff888cc396874685bDaniel Dunbar if (Method->isVariadic()) { 40692e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor for (unsigned i = NumNamedArgs; i < NumArgs; ++i) { 40792e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor if (Args[i]->isTypeDependent()) 40892e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor continue; 40992e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor 410429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley ExprResult Arg = DefaultVariadicArgumentPromotion(Args[i], VariadicMethod, 0); 411429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley IsError |= Arg.isInvalid(); 412429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley Args[i] = Arg.take(); 41392e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor } 41491e19b2029447e75d2c7730ff888cc396874685bDaniel Dunbar } else { 41591e19b2029447e75d2c7730ff888cc396874685bDaniel Dunbar // Check for extra arguments to non-variadic methods. 41691e19b2029447e75d2c7730ff888cc396874685bDaniel Dunbar if (NumArgs != NumNamedArgs) { 4171eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Diag(Args[NumNamedArgs]->getLocStart(), 418fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner diag::err_typecheck_call_too_many_args) 419ccfa9639f8d09733bcf1c2572c5bd3daba5bd632Eric Christopher << 2 /*method*/ << NumNamedArgs << NumArgs 420ccfa9639f8d09733bcf1c2572c5bd3daba5bd632Eric Christopher << Method->getSourceRange() 421fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner << SourceRange(Args[NumNamedArgs]->getLocStart(), 422fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner Args[NumArgs-1]->getLocEnd()); 42391e19b2029447e75d2c7730ff888cc396874685bDaniel Dunbar } 42491e19b2029447e75d2c7730ff888cc396874685bDaniel Dunbar } 4255272adfe7066c4847b7339a75777252de64e79c2Fariborz Jahanian // diagnose nonnull arguments. 4265272adfe7066c4847b7339a75777252de64e79c2Fariborz Jahanian for (specific_attr_iterator<NonNullAttr> 4275272adfe7066c4847b7339a75777252de64e79c2Fariborz Jahanian i = Method->specific_attr_begin<NonNullAttr>(), 4285272adfe7066c4847b7339a75777252de64e79c2Fariborz Jahanian e = Method->specific_attr_end<NonNullAttr>(); i != e; ++i) { 4295272adfe7066c4847b7339a75777252de64e79c2Fariborz Jahanian CheckNonNullArguments(*i, Args, lbrac); 4305272adfe7066c4847b7339a75777252de64e79c2Fariborz Jahanian } 43191e19b2029447e75d2c7730ff888cc396874685bDaniel Dunbar 4322725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor DiagnoseSentinelCalls(Method, lbrac, Args, NumArgs); 433312531a8cd69c562d5687bd69fd334be99d87320Chris Lattner return IsError; 43485a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner} 43585a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner 436f85e193739c953358c865005855253af4f68a497John McCallbool Sema::isSelfExpr(Expr *receiver) { 437f2d74cc083e1a83838acf99d2e1ca260d1c54742Fariborz Jahanian // 'self' is objc 'self' in an objc method only. 438b460210fe0dec08971edfe33c294323cf79cb894Fariborz Jahanian DeclContext *DC = CurContext; 439b460210fe0dec08971edfe33c294323cf79cb894Fariborz Jahanian while (isa<BlockDecl>(DC)) 440b460210fe0dec08971edfe33c294323cf79cb894Fariborz Jahanian DC = DC->getParent(); 441b460210fe0dec08971edfe33c294323cf79cb894Fariborz Jahanian if (DC && !isa<ObjCMethodDecl>(DC)) 442f2d74cc083e1a83838acf99d2e1ca260d1c54742Fariborz Jahanian return false; 443f85e193739c953358c865005855253af4f68a497John McCall receiver = receiver->IgnoreParenLValueCasts(); 444f85e193739c953358c865005855253af4f68a497John McCall if (DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(receiver)) 4456b9dfd4257b85c388a9e3cd345cf28acb7351006Steve Naroff if (DRE->getDecl()->getIdentifier() == &Context.Idents.get("self")) 4466b9dfd4257b85c388a9e3cd345cf28acb7351006Steve Naroff return true; 4476b9dfd4257b85c388a9e3cd345cf28acb7351006Steve Naroff return false; 4486b9dfd4257b85c388a9e3cd345cf28acb7351006Steve Naroff} 4496b9dfd4257b85c388a9e3cd345cf28acb7351006Steve Naroff 450f1afaf6fe2d94ab265299853f288b676694f7554Steve Naroff// Helper method for ActOnClassMethod/ActOnInstanceMethod. 451f1afaf6fe2d94ab265299853f288b676694f7554Steve Naroff// Will search "local" class/category implementations for a method decl. 452175ba1e8180083927aabd7cc8137baa16be75646Fariborz Jahanian// If failed, then we search in class's root for an instance method. 453f1afaf6fe2d94ab265299853f288b676694f7554Steve Naroff// Returns 0 if no method is found. 4545609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve NaroffObjCMethodDecl *Sema::LookupPrivateClassMethod(Selector Sel, 455f1afaf6fe2d94ab265299853f288b676694f7554Steve Naroff ObjCInterfaceDecl *ClassDecl) { 456f1afaf6fe2d94ab265299853f288b676694f7554Steve Naroff ObjCMethodDecl *Method = 0; 4575609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff // lookup in class and all superclasses 4585609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff while (ClassDecl && !Method) { 45987018775ed689d0a67357cf767747166044b3a27Argyrios Kyrtzidis if (ObjCImplementationDecl *ImpDecl = ClassDecl->getImplementation()) 46017945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis Method = ImpDecl->getClassMethod(Sel); 4611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4625609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff // Look through local category implementations associated with the class. 4631cb35dd4840d21cec58648361180d5688446a9caArgyrios Kyrtzidis if (!Method) 4641cb35dd4840d21cec58648361180d5688446a9caArgyrios Kyrtzidis Method = ClassDecl->getCategoryClassMethod(Sel); 4651eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4665609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff // Before we give up, check if the selector is an instance method. 4675609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff // But only in the root. This matches gcc's behaviour and what the 4685609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff // runtime expects. 4695609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff if (!Method && !ClassDecl->getSuperClass()) { 47017945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis Method = ClassDecl->lookupInstanceMethod(Sel); 4711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Look through local category implementations associated 4725609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff // with the root class. 4731eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (!Method) 4745609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff Method = LookupPrivateInstanceMethod(Sel, ClassDecl); 475f1afaf6fe2d94ab265299853f288b676694f7554Steve Naroff } 4761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4775609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff ClassDecl = ClassDecl->getSuperClass(); 478f1afaf6fe2d94ab265299853f288b676694f7554Steve Naroff } 4795609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff return Method; 4805609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff} 4815609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff 4825609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve NaroffObjCMethodDecl *Sema::LookupPrivateInstanceMethod(Selector Sel, 4835609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff ObjCInterfaceDecl *ClassDecl) { 4845609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff ObjCMethodDecl *Method = 0; 4855609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff while (ClassDecl && !Method) { 4865609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff // If we have implementations in scope, check "private" methods. 48787018775ed689d0a67357cf767747166044b3a27Argyrios Kyrtzidis if (ObjCImplementationDecl *ImpDecl = ClassDecl->getImplementation()) 48817945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis Method = ImpDecl->getInstanceMethod(Sel); 4891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4905609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff // Look through local category implementations associated with the class. 4911cb35dd4840d21cec58648361180d5688446a9caArgyrios Kyrtzidis if (!Method) 4921cb35dd4840d21cec58648361180d5688446a9caArgyrios Kyrtzidis Method = ClassDecl->getCategoryInstanceMethod(Sel); 4935609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff ClassDecl = ClassDecl->getSuperClass(); 494175ba1e8180083927aabd7cc8137baa16be75646Fariborz Jahanian } 495f1afaf6fe2d94ab265299853f288b676694f7554Steve Naroff return Method; 496f1afaf6fe2d94ab265299853f288b676694f7554Steve Naroff} 497f1afaf6fe2d94ab265299853f288b676694f7554Steve Naroff 49861478065fbcafcf5295bb0fb796c9a92f2d861e0Fariborz Jahanian/// LookupMethodInQualifiedType - Lookups up a method in protocol qualifier 49961478065fbcafcf5295bb0fb796c9a92f2d861e0Fariborz Jahanian/// list of a qualified objective pointer type. 50061478065fbcafcf5295bb0fb796c9a92f2d861e0Fariborz JahanianObjCMethodDecl *Sema::LookupMethodInQualifiedType(Selector Sel, 50161478065fbcafcf5295bb0fb796c9a92f2d861e0Fariborz Jahanian const ObjCObjectPointerType *OPT, 50261478065fbcafcf5295bb0fb796c9a92f2d861e0Fariborz Jahanian bool Instance) 50361478065fbcafcf5295bb0fb796c9a92f2d861e0Fariborz Jahanian{ 50461478065fbcafcf5295bb0fb796c9a92f2d861e0Fariborz Jahanian ObjCMethodDecl *MD = 0; 50561478065fbcafcf5295bb0fb796c9a92f2d861e0Fariborz Jahanian for (ObjCObjectPointerType::qual_iterator I = OPT->qual_begin(), 50661478065fbcafcf5295bb0fb796c9a92f2d861e0Fariborz Jahanian E = OPT->qual_end(); I != E; ++I) { 50761478065fbcafcf5295bb0fb796c9a92f2d861e0Fariborz Jahanian ObjCProtocolDecl *PROTO = (*I); 50861478065fbcafcf5295bb0fb796c9a92f2d861e0Fariborz Jahanian if ((MD = PROTO->lookupMethod(Sel, Instance))) { 50961478065fbcafcf5295bb0fb796c9a92f2d861e0Fariborz Jahanian return MD; 51061478065fbcafcf5295bb0fb796c9a92f2d861e0Fariborz Jahanian } 51161478065fbcafcf5295bb0fb796c9a92f2d861e0Fariborz Jahanian } 51261478065fbcafcf5295bb0fb796c9a92f2d861e0Fariborz Jahanian return 0; 51361478065fbcafcf5295bb0fb796c9a92f2d861e0Fariborz Jahanian} 51461478065fbcafcf5295bb0fb796c9a92f2d861e0Fariborz Jahanian 5157f81652f97a69ae8b514893a69c0245253687e55Chris Lattner/// HandleExprPropertyRefExpr - Handle foo.bar where foo is a pointer to an 5167f81652f97a69ae8b514893a69c0245253687e55Chris Lattner/// objective C interface. This is a property reference expression. 51760d7b3a319d84d688752be3870615ac0f111fb16John McCallExprResult Sema:: 5187f81652f97a69ae8b514893a69c0245253687e55Chris LattnerHandleExprPropertyRefExpr(const ObjCObjectPointerType *OPT, 519b9d4fc1f54924a7b242fb763192a40c19fa6103dChris Lattner Expr *BaseExpr, DeclarationName MemberName, 5208ac2d449820fd0df00fcbde5bf82165c1f49854dFariborz Jahanian SourceLocation MemberLoc, 5218ac2d449820fd0df00fcbde5bf82165c1f49854dFariborz Jahanian SourceLocation SuperLoc, QualType SuperType, 5228ac2d449820fd0df00fcbde5bf82165c1f49854dFariborz Jahanian bool Super) { 5237f81652f97a69ae8b514893a69c0245253687e55Chris Lattner const ObjCInterfaceType *IFaceT = OPT->getInterfaceType(); 5247f81652f97a69ae8b514893a69c0245253687e55Chris Lattner ObjCInterfaceDecl *IFace = IFaceT->getDecl(); 525109ec1b05664e35e710785314c12552307f39a7dDouglas Gregor 526109ec1b05664e35e710785314c12552307f39a7dDouglas Gregor if (MemberName.getNameKind() != DeclarationName::Identifier) { 527109ec1b05664e35e710785314c12552307f39a7dDouglas Gregor Diag(MemberLoc, diag::err_invalid_property_name) 528109ec1b05664e35e710785314c12552307f39a7dDouglas Gregor << MemberName << QualType(OPT, 0); 529109ec1b05664e35e710785314c12552307f39a7dDouglas Gregor return ExprError(); 530109ec1b05664e35e710785314c12552307f39a7dDouglas Gregor } 531109ec1b05664e35e710785314c12552307f39a7dDouglas Gregor 5327f81652f97a69ae8b514893a69c0245253687e55Chris Lattner IdentifierInfo *Member = MemberName.getAsIdentifierInfo(); 5337f81652f97a69ae8b514893a69c0245253687e55Chris Lattner 5348b1aba495744bea7093899a65f08c3987263061cFariborz Jahanian if (IFace->isForwardDecl()) { 5358b1aba495744bea7093899a65f08c3987263061cFariborz Jahanian Diag(MemberLoc, diag::err_property_not_found_forward_class) 5368b1aba495744bea7093899a65f08c3987263061cFariborz Jahanian << MemberName << QualType(OPT, 0); 5378b1aba495744bea7093899a65f08c3987263061cFariborz Jahanian Diag(IFace->getLocation(), diag::note_forward_class); 5388b1aba495744bea7093899a65f08c3987263061cFariborz Jahanian return ExprError(); 5398b1aba495744bea7093899a65f08c3987263061cFariborz Jahanian } 5407f81652f97a69ae8b514893a69c0245253687e55Chris Lattner // Search for a declared property first. 5417f81652f97a69ae8b514893a69c0245253687e55Chris Lattner if (ObjCPropertyDecl *PD = IFace->FindPropertyDeclaration(Member)) { 5427f81652f97a69ae8b514893a69c0245253687e55Chris Lattner // Check whether we can reference this property. 5437f81652f97a69ae8b514893a69c0245253687e55Chris Lattner if (DiagnoseUseOfDecl(PD, MemberLoc)) 5447f81652f97a69ae8b514893a69c0245253687e55Chris Lattner return ExprError(); 5457f81652f97a69ae8b514893a69c0245253687e55Chris Lattner QualType ResTy = PD->getType(); 54614086764e340267e17803d0f8243070ffae2c76eFariborz Jahanian ResTy = ResTy.getNonLValueExprType(Context); 5477f81652f97a69ae8b514893a69c0245253687e55Chris Lattner Selector Sel = PP.getSelectorTable().getNullarySelector(Member); 5487f81652f97a69ae8b514893a69c0245253687e55Chris Lattner ObjCMethodDecl *Getter = IFace->lookupInstanceMethod(Sel); 549926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor if (Getter && 550926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor (Getter->hasRelatedResultType() 551926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor || DiagnosePropertyAccessorMismatch(PD, Getter, MemberLoc))) 552926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor ResTy = getMessageSendResultType(QualType(OPT, 0), Getter, false, 553926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor Super); 554926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor 5558ac2d449820fd0df00fcbde5bf82165c1f49854dFariborz Jahanian if (Super) 5568ac2d449820fd0df00fcbde5bf82165c1f49854dFariborz Jahanian return Owned(new (Context) ObjCPropertyRefExpr(PD, ResTy, 557f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall VK_LValue, OK_ObjCProperty, 5588ac2d449820fd0df00fcbde5bf82165c1f49854dFariborz Jahanian MemberLoc, 5598ac2d449820fd0df00fcbde5bf82165c1f49854dFariborz Jahanian SuperLoc, SuperType)); 5608ac2d449820fd0df00fcbde5bf82165c1f49854dFariborz Jahanian else 5618ac2d449820fd0df00fcbde5bf82165c1f49854dFariborz Jahanian return Owned(new (Context) ObjCPropertyRefExpr(PD, ResTy, 562f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall VK_LValue, OK_ObjCProperty, 5638ac2d449820fd0df00fcbde5bf82165c1f49854dFariborz Jahanian MemberLoc, BaseExpr)); 5647f81652f97a69ae8b514893a69c0245253687e55Chris Lattner } 5657f81652f97a69ae8b514893a69c0245253687e55Chris Lattner // Check protocols on qualified interfaces. 5667f81652f97a69ae8b514893a69c0245253687e55Chris Lattner for (ObjCObjectPointerType::qual_iterator I = OPT->qual_begin(), 5677f81652f97a69ae8b514893a69c0245253687e55Chris Lattner E = OPT->qual_end(); I != E; ++I) 5687f81652f97a69ae8b514893a69c0245253687e55Chris Lattner if (ObjCPropertyDecl *PD = (*I)->FindPropertyDeclaration(Member)) { 5697f81652f97a69ae8b514893a69c0245253687e55Chris Lattner // Check whether we can reference this property. 5707f81652f97a69ae8b514893a69c0245253687e55Chris Lattner if (DiagnoseUseOfDecl(PD, MemberLoc)) 5717f81652f97a69ae8b514893a69c0245253687e55Chris Lattner return ExprError(); 572926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor 573926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor QualType T = PD->getType(); 574926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor if (ObjCMethodDecl *Getter = PD->getGetterMethodDecl()) 575926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor T = getMessageSendResultType(QualType(OPT, 0), Getter, false, Super); 5768ac2d449820fd0df00fcbde5bf82165c1f49854dFariborz Jahanian if (Super) 577926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor return Owned(new (Context) ObjCPropertyRefExpr(PD, T, 578f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall VK_LValue, 579f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall OK_ObjCProperty, 580f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall MemberLoc, 581f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall SuperLoc, SuperType)); 5828ac2d449820fd0df00fcbde5bf82165c1f49854dFariborz Jahanian else 583926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor return Owned(new (Context) ObjCPropertyRefExpr(PD, T, 584f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall VK_LValue, 585f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall OK_ObjCProperty, 5868ac2d449820fd0df00fcbde5bf82165c1f49854dFariborz Jahanian MemberLoc, 5878ac2d449820fd0df00fcbde5bf82165c1f49854dFariborz Jahanian BaseExpr)); 5887f81652f97a69ae8b514893a69c0245253687e55Chris Lattner } 5897f81652f97a69ae8b514893a69c0245253687e55Chris Lattner // If that failed, look for an "implicit" property by seeing if the nullary 5907f81652f97a69ae8b514893a69c0245253687e55Chris Lattner // selector is implemented. 5917f81652f97a69ae8b514893a69c0245253687e55Chris Lattner 5927f81652f97a69ae8b514893a69c0245253687e55Chris Lattner // FIXME: The logic for looking up nullary and unary selectors should be 5937f81652f97a69ae8b514893a69c0245253687e55Chris Lattner // shared with the code in ActOnInstanceMessage. 5947f81652f97a69ae8b514893a69c0245253687e55Chris Lattner 5957f81652f97a69ae8b514893a69c0245253687e55Chris Lattner Selector Sel = PP.getSelectorTable().getNullarySelector(Member); 5967f81652f97a69ae8b514893a69c0245253687e55Chris Lattner ObjCMethodDecl *Getter = IFace->lookupInstanceMethod(Sel); 59727569b0f3e1b27f609a2e104b39bad077850e210Fariborz Jahanian 59827569b0f3e1b27f609a2e104b39bad077850e210Fariborz Jahanian // May be founf in property's qualified list. 59927569b0f3e1b27f609a2e104b39bad077850e210Fariborz Jahanian if (!Getter) 60027569b0f3e1b27f609a2e104b39bad077850e210Fariborz Jahanian Getter = LookupMethodInQualifiedType(Sel, OPT, true); 6017f81652f97a69ae8b514893a69c0245253687e55Chris Lattner 6027f81652f97a69ae8b514893a69c0245253687e55Chris Lattner // If this reference is in an @implementation, check for 'private' methods. 6037f81652f97a69ae8b514893a69c0245253687e55Chris Lattner if (!Getter) 60474b2756bc1f1f5f7c189996fe7e4cd3efef70263Fariborz Jahanian Getter = IFace->lookupPrivateMethod(Sel); 6057f81652f97a69ae8b514893a69c0245253687e55Chris Lattner 6067f81652f97a69ae8b514893a69c0245253687e55Chris Lattner // Look through local category implementations associated with the class. 6077f81652f97a69ae8b514893a69c0245253687e55Chris Lattner if (!Getter) 6087f81652f97a69ae8b514893a69c0245253687e55Chris Lattner Getter = IFace->getCategoryInstanceMethod(Sel); 6097f81652f97a69ae8b514893a69c0245253687e55Chris Lattner if (Getter) { 6107f81652f97a69ae8b514893a69c0245253687e55Chris Lattner // Check if we can reference this property. 6117f81652f97a69ae8b514893a69c0245253687e55Chris Lattner if (DiagnoseUseOfDecl(Getter, MemberLoc)) 6127f81652f97a69ae8b514893a69c0245253687e55Chris Lattner return ExprError(); 6137f81652f97a69ae8b514893a69c0245253687e55Chris Lattner } 6147f81652f97a69ae8b514893a69c0245253687e55Chris Lattner // If we found a getter then this may be a valid dot-reference, we 6157f81652f97a69ae8b514893a69c0245253687e55Chris Lattner // will look for the matching setter, in case it is needed. 6167f81652f97a69ae8b514893a69c0245253687e55Chris Lattner Selector SetterSel = 6177f81652f97a69ae8b514893a69c0245253687e55Chris Lattner SelectorTable::constructSetterName(PP.getIdentifierTable(), 6187f81652f97a69ae8b514893a69c0245253687e55Chris Lattner PP.getSelectorTable(), Member); 6197f81652f97a69ae8b514893a69c0245253687e55Chris Lattner ObjCMethodDecl *Setter = IFace->lookupInstanceMethod(SetterSel); 62027569b0f3e1b27f609a2e104b39bad077850e210Fariborz Jahanian 62127569b0f3e1b27f609a2e104b39bad077850e210Fariborz Jahanian // May be founf in property's qualified list. 62227569b0f3e1b27f609a2e104b39bad077850e210Fariborz Jahanian if (!Setter) 62327569b0f3e1b27f609a2e104b39bad077850e210Fariborz Jahanian Setter = LookupMethodInQualifiedType(SetterSel, OPT, true); 62427569b0f3e1b27f609a2e104b39bad077850e210Fariborz Jahanian 6257f81652f97a69ae8b514893a69c0245253687e55Chris Lattner if (!Setter) { 6267f81652f97a69ae8b514893a69c0245253687e55Chris Lattner // If this reference is in an @implementation, also check for 'private' 6277f81652f97a69ae8b514893a69c0245253687e55Chris Lattner // methods. 62874b2756bc1f1f5f7c189996fe7e4cd3efef70263Fariborz Jahanian Setter = IFace->lookupPrivateMethod(SetterSel); 6297f81652f97a69ae8b514893a69c0245253687e55Chris Lattner } 6307f81652f97a69ae8b514893a69c0245253687e55Chris Lattner // Look through local category implementations associated with the class. 6317f81652f97a69ae8b514893a69c0245253687e55Chris Lattner if (!Setter) 6327f81652f97a69ae8b514893a69c0245253687e55Chris Lattner Setter = IFace->getCategoryInstanceMethod(SetterSel); 63327569b0f3e1b27f609a2e104b39bad077850e210Fariborz Jahanian 6347f81652f97a69ae8b514893a69c0245253687e55Chris Lattner if (Setter && DiagnoseUseOfDecl(Setter, MemberLoc)) 6357f81652f97a69ae8b514893a69c0245253687e55Chris Lattner return ExprError(); 6367f81652f97a69ae8b514893a69c0245253687e55Chris Lattner 63799130e5a02e93282cb393d2cba0d3dffc10abc01Fariborz Jahanian if (Getter || Setter) { 63899130e5a02e93282cb393d2cba0d3dffc10abc01Fariborz Jahanian QualType PType; 63999130e5a02e93282cb393d2cba0d3dffc10abc01Fariborz Jahanian if (Getter) 640926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor PType = getMessageSendResultType(QualType(OPT, 0), Getter, false, Super); 64199130e5a02e93282cb393d2cba0d3dffc10abc01Fariborz Jahanian else { 64299130e5a02e93282cb393d2cba0d3dffc10abc01Fariborz Jahanian ParmVarDecl *ArgDecl = *Setter->param_begin(); 64399130e5a02e93282cb393d2cba0d3dffc10abc01Fariborz Jahanian PType = ArgDecl->getType(); 64499130e5a02e93282cb393d2cba0d3dffc10abc01Fariborz Jahanian } 64599130e5a02e93282cb393d2cba0d3dffc10abc01Fariborz Jahanian 6460943168ac126b8047f30f6bd215fbe7db14d61baJohn McCall ExprValueKind VK = VK_LValue; 6470943168ac126b8047f30f6bd215fbe7db14d61baJohn McCall ExprObjectKind OK = OK_ObjCProperty; 6480943168ac126b8047f30f6bd215fbe7db14d61baJohn McCall if (!getLangOptions().CPlusPlus && !PType.hasQualifiers() && 6490943168ac126b8047f30f6bd215fbe7db14d61baJohn McCall PType->isVoidType()) 6500943168ac126b8047f30f6bd215fbe7db14d61baJohn McCall VK = VK_RValue, OK = OK_Ordinary; 6510943168ac126b8047f30f6bd215fbe7db14d61baJohn McCall 6528ac2d449820fd0df00fcbde5bf82165c1f49854dFariborz Jahanian if (Super) 65312f78a6741a4cb3d904340f8d3d2714568b50e7aJohn McCall return Owned(new (Context) ObjCPropertyRefExpr(Getter, Setter, 65412f78a6741a4cb3d904340f8d3d2714568b50e7aJohn McCall PType, VK, OK, 65512f78a6741a4cb3d904340f8d3d2714568b50e7aJohn McCall MemberLoc, 65612f78a6741a4cb3d904340f8d3d2714568b50e7aJohn McCall SuperLoc, SuperType)); 6578ac2d449820fd0df00fcbde5bf82165c1f49854dFariborz Jahanian else 65812f78a6741a4cb3d904340f8d3d2714568b50e7aJohn McCall return Owned(new (Context) ObjCPropertyRefExpr(Getter, Setter, 65912f78a6741a4cb3d904340f8d3d2714568b50e7aJohn McCall PType, VK, OK, 66012f78a6741a4cb3d904340f8d3d2714568b50e7aJohn McCall MemberLoc, BaseExpr)); 6618ac2d449820fd0df00fcbde5bf82165c1f49854dFariborz Jahanian 6627f81652f97a69ae8b514893a69c0245253687e55Chris Lattner } 6637f81652f97a69ae8b514893a69c0245253687e55Chris Lattner 6647f81652f97a69ae8b514893a69c0245253687e55Chris Lattner // Attempt to correct for typos in property names. 6657f81652f97a69ae8b514893a69c0245253687e55Chris Lattner LookupResult Res(*this, MemberName, MemberLoc, LookupOrdinaryName); 666aaf87162c5fbfbf320072da3a8e83392e1bbf041Douglas Gregor if (CorrectTypo(Res, 0, 0, IFace, false, CTC_NoKeywords, OPT) && 6677f81652f97a69ae8b514893a69c0245253687e55Chris Lattner Res.getAsSingle<ObjCPropertyDecl>()) { 668b9d4fc1f54924a7b242fb763192a40c19fa6103dChris Lattner DeclarationName TypoResult = Res.getLookupName(); 6697f81652f97a69ae8b514893a69c0245253687e55Chris Lattner Diag(MemberLoc, diag::err_property_not_found_suggest) 670b9d4fc1f54924a7b242fb763192a40c19fa6103dChris Lattner << MemberName << QualType(OPT, 0) << TypoResult 671b9d4fc1f54924a7b242fb763192a40c19fa6103dChris Lattner << FixItHint::CreateReplacement(MemberLoc, TypoResult.getAsString()); 6727f81652f97a69ae8b514893a69c0245253687e55Chris Lattner ObjCPropertyDecl *Property = Res.getAsSingle<ObjCPropertyDecl>(); 6737f81652f97a69ae8b514893a69c0245253687e55Chris Lattner Diag(Property->getLocation(), diag::note_previous_decl) 6747f81652f97a69ae8b514893a69c0245253687e55Chris Lattner << Property->getDeclName(); 6758ac2d449820fd0df00fcbde5bf82165c1f49854dFariborz Jahanian return HandleExprPropertyRefExpr(OPT, BaseExpr, TypoResult, MemberLoc, 6768ac2d449820fd0df00fcbde5bf82165c1f49854dFariborz Jahanian SuperLoc, SuperType, Super); 6777f81652f97a69ae8b514893a69c0245253687e55Chris Lattner } 67841aadbc530f071fe5ccbfc2560899a4a2e74c057Fariborz Jahanian ObjCInterfaceDecl *ClassDeclared; 67941aadbc530f071fe5ccbfc2560899a4a2e74c057Fariborz Jahanian if (ObjCIvarDecl *Ivar = 68041aadbc530f071fe5ccbfc2560899a4a2e74c057Fariborz Jahanian IFace->lookupInstanceVariable(Member, ClassDeclared)) { 68141aadbc530f071fe5ccbfc2560899a4a2e74c057Fariborz Jahanian QualType T = Ivar->getType(); 68241aadbc530f071fe5ccbfc2560899a4a2e74c057Fariborz Jahanian if (const ObjCObjectPointerType * OBJPT = 68341aadbc530f071fe5ccbfc2560899a4a2e74c057Fariborz Jahanian T->getAsObjCInterfacePointerType()) { 68441aadbc530f071fe5ccbfc2560899a4a2e74c057Fariborz Jahanian const ObjCInterfaceType *IFaceT = OBJPT->getInterfaceType(); 68541aadbc530f071fe5ccbfc2560899a4a2e74c057Fariborz Jahanian if (ObjCInterfaceDecl *IFace = IFaceT->getDecl()) 68641aadbc530f071fe5ccbfc2560899a4a2e74c057Fariborz Jahanian if (IFace->isForwardDecl()) { 68741aadbc530f071fe5ccbfc2560899a4a2e74c057Fariborz Jahanian Diag(MemberLoc, diag::err_property_not_as_forward_class) 6882a96bf5e66731bb54dff3e4aadfbbced83377530Fariborz Jahanian << MemberName << IFace; 68941aadbc530f071fe5ccbfc2560899a4a2e74c057Fariborz Jahanian Diag(IFace->getLocation(), diag::note_forward_class); 69041aadbc530f071fe5ccbfc2560899a4a2e74c057Fariborz Jahanian return ExprError(); 69141aadbc530f071fe5ccbfc2560899a4a2e74c057Fariborz Jahanian } 69241aadbc530f071fe5ccbfc2560899a4a2e74c057Fariborz Jahanian } 69341aadbc530f071fe5ccbfc2560899a4a2e74c057Fariborz Jahanian } 694b9d4fc1f54924a7b242fb763192a40c19fa6103dChris Lattner 6957f81652f97a69ae8b514893a69c0245253687e55Chris Lattner Diag(MemberLoc, diag::err_property_not_found) 6967f81652f97a69ae8b514893a69c0245253687e55Chris Lattner << MemberName << QualType(OPT, 0); 69799130e5a02e93282cb393d2cba0d3dffc10abc01Fariborz Jahanian if (Setter) 6987f81652f97a69ae8b514893a69c0245253687e55Chris Lattner Diag(Setter->getLocation(), diag::note_getter_unavailable) 69999130e5a02e93282cb393d2cba0d3dffc10abc01Fariborz Jahanian << MemberName << BaseExpr->getSourceRange(); 7007f81652f97a69ae8b514893a69c0245253687e55Chris Lattner return ExprError(); 7017f81652f97a69ae8b514893a69c0245253687e55Chris Lattner} 7027f81652f97a69ae8b514893a69c0245253687e55Chris Lattner 7037f81652f97a69ae8b514893a69c0245253687e55Chris Lattner 7047f81652f97a69ae8b514893a69c0245253687e55Chris Lattner 70560d7b3a319d84d688752be3870615ac0f111fb16John McCallExprResult Sema:: 706eb483eb3ee80300f15d6d13573d82493c2194461Chris LattnerActOnClassPropertyRefExpr(IdentifierInfo &receiverName, 707eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner IdentifierInfo &propertyName, 708eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner SourceLocation receiverNameLoc, 709eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner SourceLocation propertyNameLoc) { 7101eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 711f06cdae9c68dfc4191fbf6b9e5ea0fd748488d88Douglas Gregor IdentifierInfo *receiverNamePtr = &receiverName; 712c83c6874e3bf1432d3df5e8d3530f8561ff5441fDouglas Gregor ObjCInterfaceDecl *IFace = getObjCInterfaceDecl(receiverNamePtr, 713c83c6874e3bf1432d3df5e8d3530f8561ff5441fDouglas Gregor receiverNameLoc); 714926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor 715926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor bool IsSuper = false; 716eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner if (IFace == 0) { 717eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner // If the "receiver" is 'super' in a method, handle it as an expression-like 718eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner // property reference. 71926743b20e4a8c2a986e6453f0c38beba0afef633John McCall if (receiverNamePtr->isStr("super")) { 720926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor IsSuper = true; 721926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor 72226743b20e4a8c2a986e6453f0c38beba0afef633John McCall if (ObjCMethodDecl *CurMethod = tryCaptureObjCSelf()) { 723eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner if (CurMethod->isInstanceMethod()) { 724eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner QualType T = 725eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner Context.getObjCInterfaceType(CurMethod->getClassInterface()); 726eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner T = Context.getObjCObjectPointerType(T); 727eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner 728eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner return HandleExprPropertyRefExpr(T->getAsObjCInterfacePointerType(), 7298ac2d449820fd0df00fcbde5bf82165c1f49854dFariborz Jahanian /*BaseExpr*/0, &propertyName, 7308ac2d449820fd0df00fcbde5bf82165c1f49854dFariborz Jahanian propertyNameLoc, 7318ac2d449820fd0df00fcbde5bf82165c1f49854dFariborz Jahanian receiverNameLoc, T, true); 732eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner } 733eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner 734eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner // Otherwise, if this is a class method, try dispatching to our 735eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner // superclass. 736eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner IFace = CurMethod->getClassInterface()->getSuperClass(); 737eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner } 73826743b20e4a8c2a986e6453f0c38beba0afef633John McCall } 739eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner 740eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner if (IFace == 0) { 741eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner Diag(receiverNameLoc, diag::err_expected_ident_or_lparen); 742eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner return ExprError(); 743eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner } 7448149a5786def747af783a9e3c22714bb7ab42b9cFariborz Jahanian } 7451eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 746eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner // Search for a declared property first. 74761f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff Selector Sel = PP.getSelectorTable().getNullarySelector(&propertyName); 74817945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis ObjCMethodDecl *Getter = IFace->lookupClassMethod(Sel); 74961f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff 75061f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff // If this reference is in an @implementation, check for 'private' methods. 75161f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff if (!Getter) 75261f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff if (ObjCMethodDecl *CurMeth = getCurMethodDecl()) 75361f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff if (ObjCInterfaceDecl *ClassDecl = CurMeth->getClassInterface()) 75487018775ed689d0a67357cf767747166044b3a27Argyrios Kyrtzidis if (ObjCImplementationDecl *ImpDecl = ClassDecl->getImplementation()) 75517945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis Getter = ImpDecl->getClassMethod(Sel); 75661f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff 75761f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff if (Getter) { 75861f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff // FIXME: refactor/share with ActOnMemberReference(). 75961f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff // Check if we can reference this property. 76061f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff if (DiagnoseUseOfDecl(Getter, propertyNameLoc)) 76161f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff return ExprError(); 76261f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff } 7631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 76461f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff // Look for the matching setter, in case it is needed. 7651eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Selector SetterSel = 7661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SelectorTable::constructSetterName(PP.getIdentifierTable(), 767fdc92b7877535e6264fe43cfbdc8f01e9b224f81Steve Naroff PP.getSelectorTable(), &propertyName); 7681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 76917945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis ObjCMethodDecl *Setter = IFace->lookupClassMethod(SetterSel); 77061f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff if (!Setter) { 77161f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff // If this reference is in an @implementation, also check for 'private' 77261f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff // methods. 77361f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff if (ObjCMethodDecl *CurMeth = getCurMethodDecl()) 77461f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff if (ObjCInterfaceDecl *ClassDecl = CurMeth->getClassInterface()) 77587018775ed689d0a67357cf767747166044b3a27Argyrios Kyrtzidis if (ObjCImplementationDecl *ImpDecl = ClassDecl->getImplementation()) 77617945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis Setter = ImpDecl->getClassMethod(SetterSel); 77761f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff } 77861f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff // Look through local category implementations associated with the class. 7791cb35dd4840d21cec58648361180d5688446a9caArgyrios Kyrtzidis if (!Setter) 7801cb35dd4840d21cec58648361180d5688446a9caArgyrios Kyrtzidis Setter = IFace->getCategoryClassMethod(SetterSel); 78161f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff 78261f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff if (Setter && DiagnoseUseOfDecl(Setter, propertyNameLoc)) 78361f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff return ExprError(); 78461f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff 78561f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff if (Getter || Setter) { 78661f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff QualType PType; 78761f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff 7880943168ac126b8047f30f6bd215fbe7db14d61baJohn McCall ExprValueKind VK = VK_LValue; 7890943168ac126b8047f30f6bd215fbe7db14d61baJohn McCall if (Getter) { 790926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor PType = getMessageSendResultType(Context.getObjCInterfaceType(IFace), 791926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor Getter, true, 792926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor receiverNamePtr->isStr("super")); 7930943168ac126b8047f30f6bd215fbe7db14d61baJohn McCall if (!getLangOptions().CPlusPlus && 7940943168ac126b8047f30f6bd215fbe7db14d61baJohn McCall !PType.hasQualifiers() && PType->isVoidType()) 7950943168ac126b8047f30f6bd215fbe7db14d61baJohn McCall VK = VK_RValue; 7960943168ac126b8047f30f6bd215fbe7db14d61baJohn McCall } else { 79761f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff for (ObjCMethodDecl::param_iterator PI = Setter->param_begin(), 79861f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff E = Setter->param_end(); PI != E; ++PI) 79961f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff PType = (*PI)->getType(); 8000943168ac126b8047f30f6bd215fbe7db14d61baJohn McCall VK = VK_LValue; 80161f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff } 8020943168ac126b8047f30f6bd215fbe7db14d61baJohn McCall 8030943168ac126b8047f30f6bd215fbe7db14d61baJohn McCall ExprObjectKind OK = (VK == VK_RValue ? OK_Ordinary : OK_ObjCProperty); 8040943168ac126b8047f30f6bd215fbe7db14d61baJohn McCall 805926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor if (IsSuper) 806926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor return Owned(new (Context) ObjCPropertyRefExpr(Getter, Setter, 807926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor PType, VK, OK, 808926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor propertyNameLoc, 809926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor receiverNameLoc, 810926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor Context.getObjCInterfaceType(IFace))); 811926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor 81212f78a6741a4cb3d904340f8d3d2714568b50e7aJohn McCall return Owned(new (Context) ObjCPropertyRefExpr(Getter, Setter, 81312f78a6741a4cb3d904340f8d3d2714568b50e7aJohn McCall PType, VK, OK, 81412f78a6741a4cb3d904340f8d3d2714568b50e7aJohn McCall propertyNameLoc, 81512f78a6741a4cb3d904340f8d3d2714568b50e7aJohn McCall receiverNameLoc, IFace)); 81661f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff } 81761f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff return ExprError(Diag(propertyNameLoc, diag::err_property_not_found) 81861f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff << &propertyName << Context.getObjCInterfaceType(IFace)); 81961f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff} 82061f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff 82147bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas GregorSema::ObjCMessageKind Sema::getObjCMessageKind(Scope *S, 8221569f95831a8c99e9f664137bf8f40e47ee3d90fDouglas Gregor IdentifierInfo *Name, 82347bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor SourceLocation NameLoc, 82447bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor bool IsSuper, 8251569f95831a8c99e9f664137bf8f40e47ee3d90fDouglas Gregor bool HasTrailingDot, 826b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall ParsedType &ReceiverType) { 827b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall ReceiverType = ParsedType(); 8281569f95831a8c99e9f664137bf8f40e47ee3d90fDouglas Gregor 82947bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor // If the identifier is "super" and there is no trailing dot, we're 83095f4292cc526c629fead321c7fcfd4fe0f3bc66eDouglas Gregor // messaging super. If the identifier is "super" and there is a 83195f4292cc526c629fead321c7fcfd4fe0f3bc66eDouglas Gregor // trailing dot, it's an instance message. 83295f4292cc526c629fead321c7fcfd4fe0f3bc66eDouglas Gregor if (IsSuper && S->isInObjcMethodScope()) 83395f4292cc526c629fead321c7fcfd4fe0f3bc66eDouglas Gregor return HasTrailingDot? ObjCInstanceMessage : ObjCSuperMessage; 83447bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor 83547bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor LookupResult Result(*this, Name, NameLoc, LookupOrdinaryName); 83647bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor LookupName(Result, S); 83747bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor 83847bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor switch (Result.getResultKind()) { 83947bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor case LookupResult::NotFound: 840ed46442adea496dfb01dbbe53ace583d5614e79aDouglas Gregor // Normal name lookup didn't find anything. If we're in an 841ed46442adea496dfb01dbbe53ace583d5614e79aDouglas Gregor // Objective-C method, look for ivars. If we find one, we're done! 84295f4292cc526c629fead321c7fcfd4fe0f3bc66eDouglas Gregor // FIXME: This is a hack. Ivar lookup should be part of normal 84395f4292cc526c629fead321c7fcfd4fe0f3bc66eDouglas Gregor // lookup. 844ed46442adea496dfb01dbbe53ace583d5614e79aDouglas Gregor if (ObjCMethodDecl *Method = getCurMethodDecl()) { 845ed46442adea496dfb01dbbe53ace583d5614e79aDouglas Gregor ObjCInterfaceDecl *ClassDeclared; 846ed46442adea496dfb01dbbe53ace583d5614e79aDouglas Gregor if (Method->getClassInterface()->lookupInstanceVariable(Name, 847ed46442adea496dfb01dbbe53ace583d5614e79aDouglas Gregor ClassDeclared)) 848ed46442adea496dfb01dbbe53ace583d5614e79aDouglas Gregor return ObjCInstanceMessage; 849ed46442adea496dfb01dbbe53ace583d5614e79aDouglas Gregor } 85095f4292cc526c629fead321c7fcfd4fe0f3bc66eDouglas Gregor 85147bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor // Break out; we'll perform typo correction below. 85247bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor break; 85347bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor 85447bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor case LookupResult::NotFoundInCurrentInstantiation: 85547bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor case LookupResult::FoundOverloaded: 85647bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor case LookupResult::FoundUnresolvedValue: 85747bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor case LookupResult::Ambiguous: 85847bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor Result.suppressDiagnostics(); 85947bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor return ObjCInstanceMessage; 86047bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor 86147bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor case LookupResult::Found: { 8628348de33e92b8278a07a7573eb7ad3c166c02b0dFariborz Jahanian // If the identifier is a class or not, and there is a trailing dot, 8638348de33e92b8278a07a7573eb7ad3c166c02b0dFariborz Jahanian // it's an instance message. 8648348de33e92b8278a07a7573eb7ad3c166c02b0dFariborz Jahanian if (HasTrailingDot) 8658348de33e92b8278a07a7573eb7ad3c166c02b0dFariborz Jahanian return ObjCInstanceMessage; 86647bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor // We found something. If it's a type, then we have a class 86747bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor // message. Otherwise, it's an instance message. 86847bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor NamedDecl *ND = Result.getFoundDecl(); 8691569f95831a8c99e9f664137bf8f40e47ee3d90fDouglas Gregor QualType T; 8701569f95831a8c99e9f664137bf8f40e47ee3d90fDouglas Gregor if (ObjCInterfaceDecl *Class = dyn_cast<ObjCInterfaceDecl>(ND)) 8711569f95831a8c99e9f664137bf8f40e47ee3d90fDouglas Gregor T = Context.getObjCInterfaceType(Class); 8721569f95831a8c99e9f664137bf8f40e47ee3d90fDouglas Gregor else if (TypeDecl *Type = dyn_cast<TypeDecl>(ND)) 8731569f95831a8c99e9f664137bf8f40e47ee3d90fDouglas Gregor T = Context.getTypeDeclType(Type); 8741569f95831a8c99e9f664137bf8f40e47ee3d90fDouglas Gregor else 8751569f95831a8c99e9f664137bf8f40e47ee3d90fDouglas Gregor return ObjCInstanceMessage; 8761569f95831a8c99e9f664137bf8f40e47ee3d90fDouglas Gregor 8771569f95831a8c99e9f664137bf8f40e47ee3d90fDouglas Gregor // We have a class message, and T is the type we're 8781569f95831a8c99e9f664137bf8f40e47ee3d90fDouglas Gregor // messaging. Build source-location information for it. 8791569f95831a8c99e9f664137bf8f40e47ee3d90fDouglas Gregor TypeSourceInfo *TSInfo = Context.getTrivialTypeSourceInfo(T, NameLoc); 880b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall ReceiverType = CreateParsedType(T, TSInfo); 8811569f95831a8c99e9f664137bf8f40e47ee3d90fDouglas Gregor return ObjCClassMessage; 88247bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor } 88347bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor } 88447bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor 885aaf87162c5fbfbf320072da3a8e83392e1bbf041Douglas Gregor // Determine our typo-correction context. 886aaf87162c5fbfbf320072da3a8e83392e1bbf041Douglas Gregor CorrectTypoContext CTC = CTC_Expression; 887aaf87162c5fbfbf320072da3a8e83392e1bbf041Douglas Gregor if (ObjCMethodDecl *Method = getCurMethodDecl()) 888aaf87162c5fbfbf320072da3a8e83392e1bbf041Douglas Gregor if (Method->getClassInterface() && 889aaf87162c5fbfbf320072da3a8e83392e1bbf041Douglas Gregor Method->getClassInterface()->getSuperClass()) 890aaf87162c5fbfbf320072da3a8e83392e1bbf041Douglas Gregor CTC = CTC_ObjCMessageReceiver; 891aaf87162c5fbfbf320072da3a8e83392e1bbf041Douglas Gregor 892aaf87162c5fbfbf320072da3a8e83392e1bbf041Douglas Gregor if (DeclarationName Corrected = CorrectTypo(Result, S, 0, 0, false, CTC)) { 893aaf87162c5fbfbf320072da3a8e83392e1bbf041Douglas Gregor if (Result.isSingleResult()) { 894aaf87162c5fbfbf320072da3a8e83392e1bbf041Douglas Gregor // If we found a declaration, correct when it refers to an Objective-C 895aaf87162c5fbfbf320072da3a8e83392e1bbf041Douglas Gregor // class. 896aaf87162c5fbfbf320072da3a8e83392e1bbf041Douglas Gregor NamedDecl *ND = Result.getFoundDecl(); 8971569f95831a8c99e9f664137bf8f40e47ee3d90fDouglas Gregor if (ObjCInterfaceDecl *Class = dyn_cast<ObjCInterfaceDecl>(ND)) { 898aaf87162c5fbfbf320072da3a8e83392e1bbf041Douglas Gregor Diag(NameLoc, diag::err_unknown_receiver_suggest) 899aaf87162c5fbfbf320072da3a8e83392e1bbf041Douglas Gregor << Name << Result.getLookupName() 900aaf87162c5fbfbf320072da3a8e83392e1bbf041Douglas Gregor << FixItHint::CreateReplacement(SourceRange(NameLoc), 901aaf87162c5fbfbf320072da3a8e83392e1bbf041Douglas Gregor ND->getNameAsString()); 902aaf87162c5fbfbf320072da3a8e83392e1bbf041Douglas Gregor Diag(ND->getLocation(), diag::note_previous_decl) 903aaf87162c5fbfbf320072da3a8e83392e1bbf041Douglas Gregor << Corrected; 904aaf87162c5fbfbf320072da3a8e83392e1bbf041Douglas Gregor 9051569f95831a8c99e9f664137bf8f40e47ee3d90fDouglas Gregor QualType T = Context.getObjCInterfaceType(Class); 9061569f95831a8c99e9f664137bf8f40e47ee3d90fDouglas Gregor TypeSourceInfo *TSInfo = Context.getTrivialTypeSourceInfo(T, NameLoc); 907b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall ReceiverType = CreateParsedType(T, TSInfo); 908aaf87162c5fbfbf320072da3a8e83392e1bbf041Douglas Gregor return ObjCClassMessage; 909aaf87162c5fbfbf320072da3a8e83392e1bbf041Douglas Gregor } 910aaf87162c5fbfbf320072da3a8e83392e1bbf041Douglas Gregor } else if (Result.empty() && Corrected.getAsIdentifierInfo() && 911aaf87162c5fbfbf320072da3a8e83392e1bbf041Douglas Gregor Corrected.getAsIdentifierInfo()->isStr("super")) { 912aaf87162c5fbfbf320072da3a8e83392e1bbf041Douglas Gregor // If we've found the keyword "super", this is a send to super. 91347bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor Diag(NameLoc, diag::err_unknown_receiver_suggest) 914aaf87162c5fbfbf320072da3a8e83392e1bbf041Douglas Gregor << Name << Corrected 915aaf87162c5fbfbf320072da3a8e83392e1bbf041Douglas Gregor << FixItHint::CreateReplacement(SourceRange(NameLoc), "super"); 916aaf87162c5fbfbf320072da3a8e83392e1bbf041Douglas Gregor return ObjCSuperMessage; 91747bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor } 91847bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor } 91947bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor 92047bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor // Fall back: let the parser try to parse it as an instance message. 92147bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor return ObjCInstanceMessage; 92247bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor} 92361f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff 92460d7b3a319d84d688752be3870615ac0f111fb16John McCallExprResult Sema::ActOnSuperMessage(Scope *S, 9250fbda68b50ce17d7ad36ef7a5ed77518a5cd272eDouglas Gregor SourceLocation SuperLoc, 9260fbda68b50ce17d7ad36ef7a5ed77518a5cd272eDouglas Gregor Selector Sel, 9270fbda68b50ce17d7ad36ef7a5ed77518a5cd272eDouglas Gregor SourceLocation LBracLoc, 9280fbda68b50ce17d7ad36ef7a5ed77518a5cd272eDouglas Gregor SourceLocation SelectorLoc, 9290fbda68b50ce17d7ad36ef7a5ed77518a5cd272eDouglas Gregor SourceLocation RBracLoc, 9300fbda68b50ce17d7ad36ef7a5ed77518a5cd272eDouglas Gregor MultiExprArg Args) { 9312725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor // Determine whether we are inside a method or not. 93226743b20e4a8c2a986e6453f0c38beba0afef633John McCall ObjCMethodDecl *Method = tryCaptureObjCSelf(); 933f95861a4ab6bbd6a975ed079dd70eb1cc22f4467Douglas Gregor if (!Method) { 934f95861a4ab6bbd6a975ed079dd70eb1cc22f4467Douglas Gregor Diag(SuperLoc, diag::err_invalid_receiver_to_message_super); 935f95861a4ab6bbd6a975ed079dd70eb1cc22f4467Douglas Gregor return ExprError(); 936f95861a4ab6bbd6a975ed079dd70eb1cc22f4467Douglas Gregor } 9372725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor 938f95861a4ab6bbd6a975ed079dd70eb1cc22f4467Douglas Gregor ObjCInterfaceDecl *Class = Method->getClassInterface(); 939f95861a4ab6bbd6a975ed079dd70eb1cc22f4467Douglas Gregor if (!Class) { 940f95861a4ab6bbd6a975ed079dd70eb1cc22f4467Douglas Gregor Diag(SuperLoc, diag::error_no_super_class_message) 941f95861a4ab6bbd6a975ed079dd70eb1cc22f4467Douglas Gregor << Method->getDeclName(); 9422725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor return ExprError(); 94315faee19fdb9017dd6d08a690427b18c3b062c2dChris Lattner } 9442725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor 945f95861a4ab6bbd6a975ed079dd70eb1cc22f4467Douglas Gregor ObjCInterfaceDecl *Super = Class->getSuperClass(); 9462725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor if (!Super) { 947f95861a4ab6bbd6a975ed079dd70eb1cc22f4467Douglas Gregor // The current class does not have a superclass. 948e00909a6e997ec33d9baa5312e9d27b52a3da770Ted Kremenek Diag(SuperLoc, diag::error_root_class_cannot_use_super) 949e00909a6e997ec33d9baa5312e9d27b52a3da770Ted Kremenek << Class->getIdentifier(); 9502725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor return ExprError(); 9512725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor } 9522725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor 953f95861a4ab6bbd6a975ed079dd70eb1cc22f4467Douglas Gregor // We are in a method whose class has a superclass, so 'super' 954f95861a4ab6bbd6a975ed079dd70eb1cc22f4467Douglas Gregor // is acting as a keyword. 955f95861a4ab6bbd6a975ed079dd70eb1cc22f4467Douglas Gregor if (Method->isInstanceMethod()) { 956f95861a4ab6bbd6a975ed079dd70eb1cc22f4467Douglas Gregor // Since we are in an instance method, this is an instance 957f95861a4ab6bbd6a975ed079dd70eb1cc22f4467Douglas Gregor // message to the superclass instance. 958f95861a4ab6bbd6a975ed079dd70eb1cc22f4467Douglas Gregor QualType SuperTy = Context.getObjCInterfaceType(Super); 959f95861a4ab6bbd6a975ed079dd70eb1cc22f4467Douglas Gregor SuperTy = Context.getObjCObjectPointerType(SuperTy); 9609ae2f076ca5ab1feb3ba95629099ec2319833701John McCall return BuildInstanceMessage(0, SuperTy, SuperLoc, 961f40f0d5a382395e0301d7dcbeaa2b8e90b8973b1Argyrios Kyrtzidis Sel, /*Method=*/0, 962f40f0d5a382395e0301d7dcbeaa2b8e90b8973b1Argyrios Kyrtzidis LBracLoc, SelectorLoc, RBracLoc, move(Args)); 9632725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor } 964f95861a4ab6bbd6a975ed079dd70eb1cc22f4467Douglas Gregor 965f95861a4ab6bbd6a975ed079dd70eb1cc22f4467Douglas Gregor // Since we are in a class method, this is a class message to 966f95861a4ab6bbd6a975ed079dd70eb1cc22f4467Douglas Gregor // the superclass. 967f95861a4ab6bbd6a975ed079dd70eb1cc22f4467Douglas Gregor return BuildClassMessage(/*ReceiverTypeInfo=*/0, 968f95861a4ab6bbd6a975ed079dd70eb1cc22f4467Douglas Gregor Context.getObjCInterfaceType(Super), 969f40f0d5a382395e0301d7dcbeaa2b8e90b8973b1Argyrios Kyrtzidis SuperLoc, Sel, /*Method=*/0, 970f40f0d5a382395e0301d7dcbeaa2b8e90b8973b1Argyrios Kyrtzidis LBracLoc, SelectorLoc, RBracLoc, move(Args)); 9712725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor} 9722725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor 9732725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// \brief Build an Objective-C class message expression. 9742725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// 9752725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// This routine takes care of both normal class messages and 9762725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// class messages to the superclass. 9772725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// 9782725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// \param ReceiverTypeInfo Type source information that describes the 9792725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// receiver of this message. This may be NULL, in which case we are 9802725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// sending to the superclass and \p SuperLoc must be a valid source 9812725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// location. 9822725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor 9832725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// \param ReceiverType The type of the object receiving the 9842725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// message. When \p ReceiverTypeInfo is non-NULL, this is the same 9852725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// type as that refers to. For a superclass send, this is the type of 9862725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// the superclass. 9872725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// 9882725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// \param SuperLoc The location of the "super" keyword in a 9892725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// superclass message. 9902725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// 9912725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// \param Sel The selector to which the message is being sent. 9922725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// 993f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor/// \param Method The method that this class message is invoking, if 994f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor/// already known. 995f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor/// 9962725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// \param LBracLoc The location of the opening square bracket ']'. 9972725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// 9982725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// \param RBrac The location of the closing square bracket ']'. 9992725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// 10002725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// \param Args The message arguments. 100160d7b3a319d84d688752be3870615ac0f111fb16John McCallExprResult Sema::BuildClassMessage(TypeSourceInfo *ReceiverTypeInfo, 10020fbda68b50ce17d7ad36ef7a5ed77518a5cd272eDouglas Gregor QualType ReceiverType, 10030fbda68b50ce17d7ad36ef7a5ed77518a5cd272eDouglas Gregor SourceLocation SuperLoc, 10040fbda68b50ce17d7ad36ef7a5ed77518a5cd272eDouglas Gregor Selector Sel, 10050fbda68b50ce17d7ad36ef7a5ed77518a5cd272eDouglas Gregor ObjCMethodDecl *Method, 10060fbda68b50ce17d7ad36ef7a5ed77518a5cd272eDouglas Gregor SourceLocation LBracLoc, 1007f40f0d5a382395e0301d7dcbeaa2b8e90b8973b1Argyrios Kyrtzidis SourceLocation SelectorLoc, 10080fbda68b50ce17d7ad36ef7a5ed77518a5cd272eDouglas Gregor SourceLocation RBracLoc, 10090fbda68b50ce17d7ad36ef7a5ed77518a5cd272eDouglas Gregor MultiExprArg ArgsIn) { 10100fbda68b50ce17d7ad36ef7a5ed77518a5cd272eDouglas Gregor SourceLocation Loc = SuperLoc.isValid()? SuperLoc 10119497a73ad0d54859edbf48beb93ebb19a7ae50c9Douglas Gregor : ReceiverTypeInfo->getTypeLoc().getSourceRange().getBegin(); 10120fbda68b50ce17d7ad36ef7a5ed77518a5cd272eDouglas Gregor if (LBracLoc.isInvalid()) { 10130fbda68b50ce17d7ad36ef7a5ed77518a5cd272eDouglas Gregor Diag(Loc, diag::err_missing_open_square_message_send) 10140fbda68b50ce17d7ad36ef7a5ed77518a5cd272eDouglas Gregor << FixItHint::CreateInsertion(Loc, "["); 10150fbda68b50ce17d7ad36ef7a5ed77518a5cd272eDouglas Gregor LBracLoc = Loc; 10160fbda68b50ce17d7ad36ef7a5ed77518a5cd272eDouglas Gregor } 10170fbda68b50ce17d7ad36ef7a5ed77518a5cd272eDouglas Gregor 101892e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor if (ReceiverType->isDependentType()) { 101992e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor // If the receiver type is dependent, we can't type-check anything 102092e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor // at this point. Build a dependent expression. 102192e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor unsigned NumArgs = ArgsIn.size(); 102292e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor Expr **Args = reinterpret_cast<Expr **>(ArgsIn.release()); 102392e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor assert(SuperLoc.isInvalid() && "Message to super with dependent type"); 1024f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall return Owned(ObjCMessageExpr::Create(Context, ReceiverType, 1025f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall VK_RValue, LBracLoc, ReceiverTypeInfo, 1026f40f0d5a382395e0301d7dcbeaa2b8e90b8973b1Argyrios Kyrtzidis Sel, SelectorLoc, /*Method=*/0, 102792e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor Args, NumArgs, RBracLoc)); 102892e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor } 102915faee19fdb9017dd6d08a690427b18c3b062c2dChris Lattner 10302725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor // Find the class to which we are sending this message. 10312725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor ObjCInterfaceDecl *Class = 0; 1032c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall const ObjCObjectType *ClassType = ReceiverType->getAs<ObjCObjectType>(); 1033c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall if (!ClassType || !(Class = ClassType->getInterface())) { 10342725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor Diag(Loc, diag::err_invalid_receiver_class_message) 10352725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor << ReceiverType; 10362725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor return ExprError(); 10377c778f1c549a8ae95d50a819fd537df78da16426Steve Naroff } 10382725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor assert(Class && "We don't know which class we're messaging?"); 103902b0d651ecd6a4d5171dd0208c0c570c3d7103b7Fariborz Jahanian (void)DiagnoseUseOfDecl(Class, Loc); 10402725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor // Find the method we are messaging. 1041f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor if (!Method) { 1042f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor if (Class->isForwardDecl()) { 1043f85e193739c953358c865005855253af4f68a497John McCall if (getLangOptions().ObjCAutoRefCount) { 1044f85e193739c953358c865005855253af4f68a497John McCall Diag(Loc, diag::err_arc_receiver_forward_class) << ReceiverType; 1045f85e193739c953358c865005855253af4f68a497John McCall } else { 1046f85e193739c953358c865005855253af4f68a497John McCall Diag(Loc, diag::warn_receiver_forward_class) << Class->getDeclName(); 1047f85e193739c953358c865005855253af4f68a497John McCall } 1048f85e193739c953358c865005855253af4f68a497John McCall 1049f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor // A forward class used in messaging is treated as a 'Class' 1050f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor Method = LookupFactoryMethodInGlobalPool(Sel, 1051f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor SourceRange(LBracLoc, RBracLoc)); 1052f85e193739c953358c865005855253af4f68a497John McCall if (Method && !getLangOptions().ObjCAutoRefCount) 1053f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor Diag(Method->getLocation(), diag::note_method_sent_forward_class) 1054f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor << Method->getDeclName(); 1055f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor } 1056f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor if (!Method) 1057f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor Method = Class->lookupClassMethod(Sel); 10581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1059f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor // If we have an implementation in scope, check "private" methods. 1060f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor if (!Method) 1061f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor Method = LookupPrivateClassMethod(Sel, Class); 10627c778f1c549a8ae95d50a819fd537df78da16426Steve Naroff 1063f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor if (Method && DiagnoseUseOfDecl(Method, Loc)) 1064f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor return ExprError(); 1065f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor } 10661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 10672725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor // Check the argument types and determine the result type. 10682725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor QualType ReturnType; 1069f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall ExprValueKind VK = VK_RValue; 1070f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall 10712725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor unsigned NumArgs = ArgsIn.size(); 10722725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor Expr **Args = reinterpret_cast<Expr **>(ArgsIn.release()); 1073926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor if (CheckMessageArgumentTypes(ReceiverType, Args, NumArgs, Sel, Method, true, 1074926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor SuperLoc.isValid(), LBracLoc, RBracLoc, 1075926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor ReturnType, VK)) 10762725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor return ExprError(); 10774df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek 1078483dd2f55ee53bc765123ead3428aa4ad2682cf3Douglas Gregor if (Method && !Method->getResultType()->isVoidType() && 1079483dd2f55ee53bc765123ead3428aa4ad2682cf3Douglas Gregor RequireCompleteType(LBracLoc, Method->getResultType(), 1080483dd2f55ee53bc765123ead3428aa4ad2682cf3Douglas Gregor diag::err_illegal_message_expr_incomplete_type)) 1081483dd2f55ee53bc765123ead3428aa4ad2682cf3Douglas Gregor return ExprError(); 1082483dd2f55ee53bc765123ead3428aa4ad2682cf3Douglas Gregor 10832725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor // Construct the appropriate ObjCMessageExpr. 10842d6b0e94db30c0e2754d270753c6f75478e451bfDouglas Gregor Expr *Result; 10852725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor if (SuperLoc.isValid()) 1086f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall Result = ObjCMessageExpr::Create(Context, ReturnType, VK, LBracLoc, 10872d6b0e94db30c0e2754d270753c6f75478e451bfDouglas Gregor SuperLoc, /*IsInstanceSuper=*/false, 1088f40f0d5a382395e0301d7dcbeaa2b8e90b8973b1Argyrios Kyrtzidis ReceiverType, Sel, SelectorLoc, 1089f40f0d5a382395e0301d7dcbeaa2b8e90b8973b1Argyrios Kyrtzidis Method, Args, NumArgs, RBracLoc); 10902d6b0e94db30c0e2754d270753c6f75478e451bfDouglas Gregor else 1091f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall Result = ObjCMessageExpr::Create(Context, ReturnType, VK, LBracLoc, 1092f40f0d5a382395e0301d7dcbeaa2b8e90b8973b1Argyrios Kyrtzidis ReceiverTypeInfo, Sel, SelectorLoc, 1093f40f0d5a382395e0301d7dcbeaa2b8e90b8973b1Argyrios Kyrtzidis Method, Args, NumArgs, RBracLoc); 10942d6b0e94db30c0e2754d270753c6f75478e451bfDouglas Gregor return MaybeBindToTemporary(Result); 109585a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner} 109685a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner 10972725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor// ActOnClassMessage - used for both unary and keyword messages. 109885a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner// ArgExprs is optional - if it is present, the number of expressions 109985a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner// is obtained from Sel.getNumArgs(). 110060d7b3a319d84d688752be3870615ac0f111fb16John McCallExprResult Sema::ActOnClassMessage(Scope *S, 110177328d1bb92c2c46bc3e4badc4b4b97c517903b7Douglas Gregor ParsedType Receiver, 110277328d1bb92c2c46bc3e4badc4b4b97c517903b7Douglas Gregor Selector Sel, 110377328d1bb92c2c46bc3e4badc4b4b97c517903b7Douglas Gregor SourceLocation LBracLoc, 110477328d1bb92c2c46bc3e4badc4b4b97c517903b7Douglas Gregor SourceLocation SelectorLoc, 110577328d1bb92c2c46bc3e4badc4b4b97c517903b7Douglas Gregor SourceLocation RBracLoc, 110677328d1bb92c2c46bc3e4badc4b4b97c517903b7Douglas Gregor MultiExprArg Args) { 11072725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor TypeSourceInfo *ReceiverTypeInfo; 11082725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor QualType ReceiverType = GetTypeFromParser(Receiver, &ReceiverTypeInfo); 11092725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor if (ReceiverType.isNull()) 11102725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor return ExprError(); 11111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11121eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11132725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor if (!ReceiverTypeInfo) 11142725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor ReceiverTypeInfo = Context.getTrivialTypeSourceInfo(ReceiverType, LBracLoc); 11151eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11162725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor return BuildClassMessage(ReceiverTypeInfo, ReceiverType, 1117f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor /*SuperLoc=*/SourceLocation(), Sel, /*Method=*/0, 1118f40f0d5a382395e0301d7dcbeaa2b8e90b8973b1Argyrios Kyrtzidis LBracLoc, SelectorLoc, RBracLoc, move(Args)); 11192725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor} 112087d3ef08d892df8264bd51adb6ddd4a22422cd29Steve Naroff 11212725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// \brief Build an Objective-C instance message expression. 11222725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// 11232725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// This routine takes care of both normal instance messages and 11242725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// instance messages to the superclass instance. 11252725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// 11262725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// \param Receiver The expression that computes the object that will 11272725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// receive this message. This may be empty, in which case we are 11282725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// sending to the superclass instance and \p SuperLoc must be a valid 11292725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// source location. 11302725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// 11312725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// \param ReceiverType The (static) type of the object receiving the 11322725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// message. When a \p Receiver expression is provided, this is the 11332725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// same type as that expression. For a superclass instance send, this 11342725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// is a pointer to the type of the superclass. 11352725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// 11362725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// \param SuperLoc The location of the "super" keyword in a 11372725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// superclass instance message. 11382725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// 11392725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// \param Sel The selector to which the message is being sent. 11402725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// 1141f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor/// \param Method The method that this instance message is invoking, if 1142f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor/// already known. 1143f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor/// 11442725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// \param LBracLoc The location of the opening square bracket ']'. 11452725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// 11462725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// \param RBrac The location of the closing square bracket ']'. 11472725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// 11482725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// \param Args The message arguments. 114960d7b3a319d84d688752be3870615ac0f111fb16John McCallExprResult Sema::BuildInstanceMessage(Expr *Receiver, 1150f40f0d5a382395e0301d7dcbeaa2b8e90b8973b1Argyrios Kyrtzidis QualType ReceiverType, 1151f40f0d5a382395e0301d7dcbeaa2b8e90b8973b1Argyrios Kyrtzidis SourceLocation SuperLoc, 1152f40f0d5a382395e0301d7dcbeaa2b8e90b8973b1Argyrios Kyrtzidis Selector Sel, 1153f40f0d5a382395e0301d7dcbeaa2b8e90b8973b1Argyrios Kyrtzidis ObjCMethodDecl *Method, 1154f40f0d5a382395e0301d7dcbeaa2b8e90b8973b1Argyrios Kyrtzidis SourceLocation LBracLoc, 1155f40f0d5a382395e0301d7dcbeaa2b8e90b8973b1Argyrios Kyrtzidis SourceLocation SelectorLoc, 1156f40f0d5a382395e0301d7dcbeaa2b8e90b8973b1Argyrios Kyrtzidis SourceLocation RBracLoc, 1157f40f0d5a382395e0301d7dcbeaa2b8e90b8973b1Argyrios Kyrtzidis MultiExprArg ArgsIn) { 11580fbda68b50ce17d7ad36ef7a5ed77518a5cd272eDouglas Gregor // The location of the receiver. 11590fbda68b50ce17d7ad36ef7a5ed77518a5cd272eDouglas Gregor SourceLocation Loc = SuperLoc.isValid()? SuperLoc : Receiver->getLocStart(); 11600fbda68b50ce17d7ad36ef7a5ed77518a5cd272eDouglas Gregor 11610fbda68b50ce17d7ad36ef7a5ed77518a5cd272eDouglas Gregor if (LBracLoc.isInvalid()) { 11620fbda68b50ce17d7ad36ef7a5ed77518a5cd272eDouglas Gregor Diag(Loc, diag::err_missing_open_square_message_send) 11630fbda68b50ce17d7ad36ef7a5ed77518a5cd272eDouglas Gregor << FixItHint::CreateInsertion(Loc, "["); 11640fbda68b50ce17d7ad36ef7a5ed77518a5cd272eDouglas Gregor LBracLoc = Loc; 11650fbda68b50ce17d7ad36ef7a5ed77518a5cd272eDouglas Gregor } 11660fbda68b50ce17d7ad36ef7a5ed77518a5cd272eDouglas Gregor 11672725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor // If we have a receiver expression, perform appropriate promotions 11682725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor // and determine receiver type. 11692725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor if (Receiver) { 117092e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor if (Receiver->isTypeDependent()) { 117192e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor // If the receiver is type-dependent, we can't type-check anything 117292e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor // at this point. Build a dependent expression. 117392e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor unsigned NumArgs = ArgsIn.size(); 117492e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor Expr **Args = reinterpret_cast<Expr **>(ArgsIn.release()); 117592e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor assert(SuperLoc.isInvalid() && "Message to super with dependent type"); 117692e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor return Owned(ObjCMessageExpr::Create(Context, Context.DependentTy, 1177f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall VK_RValue, LBracLoc, Receiver, Sel, 1178f40f0d5a382395e0301d7dcbeaa2b8e90b8973b1Argyrios Kyrtzidis SelectorLoc, /*Method=*/0, 1179f40f0d5a382395e0301d7dcbeaa2b8e90b8973b1Argyrios Kyrtzidis Args, NumArgs, RBracLoc)); 118092e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor } 118192e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor 11822725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor // If necessary, apply function/array conversion to the receiver. 11832725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor // C99 6.7.5.3p[7,8]. 1184429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley ExprResult Result = DefaultFunctionArrayLvalueConversion(Receiver); 1185429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if (Result.isInvalid()) 1186429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley return ExprError(); 1187429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley Receiver = Result.take(); 11882725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor ReceiverType = Receiver->getType(); 11892725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor } 119004badcf84c8d504d8491c7c7e29b58f52cb16640Douglas Gregor 1191f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor if (!Method) { 1192f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor // Handle messages to id. 1193ba551983016ee3eac5421255d2ebe6723e61befbFariborz Jahanian bool receiverIsId = ReceiverType->isObjCIdType(); 11946b308f6dc7d8f1581c52095f435c0e1284b111d8Fariborz Jahanian if (receiverIsId || ReceiverType->isBlockPointerType() || 1195f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor (Receiver && Context.isObjCNSObjectType(Receiver->getType()))) { 1196f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor Method = LookupInstanceMethodInGlobalPool(Sel, 11976b308f6dc7d8f1581c52095f435c0e1284b111d8Fariborz Jahanian SourceRange(LBracLoc, RBracLoc), 11986b308f6dc7d8f1581c52095f435c0e1284b111d8Fariborz Jahanian receiverIsId); 1199f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor if (!Method) 12002725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor Method = LookupFactoryMethodInGlobalPool(Sel, 12016b308f6dc7d8f1581c52095f435c0e1284b111d8Fariborz Jahanian SourceRange(LBracLoc, RBracLoc), 12026b308f6dc7d8f1581c52095f435c0e1284b111d8Fariborz Jahanian receiverIsId); 1203f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor } else if (ReceiverType->isObjCClassType() || 1204f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor ReceiverType->isObjCQualifiedClassType()) { 1205f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor // Handle messages to Class. 1206759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian // We allow sending a message to a qualified Class ("Class<foo>"), which 1207759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian // is ok as long as one of the protocols implements the selector (if not, warn). 1208759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian if (const ObjCObjectPointerType *QClassTy 1209759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian = ReceiverType->getAsObjCQualifiedClassType()) { 1210759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian // Search protocols for class methods. 1211759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian Method = LookupMethodInQualifiedType(Sel, QClassTy, false); 1212759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian if (!Method) { 1213759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian Method = LookupMethodInQualifiedType(Sel, QClassTy, true); 1214759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian // warn if instance method found for a Class message. 1215759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian if (Method) { 1216759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian Diag(Loc, diag::warn_instance_method_on_class_found) 1217759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian << Method->getSelector() << Sel; 1218759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian Diag(Method->getLocation(), diag::note_method_declared_at); 1219759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian } 12206b9dfd4257b85c388a9e3cd345cf28acb7351006Steve Naroff } 1221759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian } else { 1222759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian if (ObjCMethodDecl *CurMeth = getCurMethodDecl()) { 1223759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian if (ObjCInterfaceDecl *ClassDecl = CurMeth->getClassInterface()) { 1224759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian // First check the public methods in the class interface. 1225759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian Method = ClassDecl->lookupClassMethod(Sel); 1226759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian 1227759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian if (!Method) 1228759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian Method = LookupPrivateClassMethod(Sel, ClassDecl); 1229759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian } 1230759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian if (Method && DiagnoseUseOfDecl(Method, Loc)) 1231759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian return ExprError(); 1232759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian } 1233759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian if (!Method) { 1234759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian // If not messaging 'self', look for any factory method named 'Sel'. 1235759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian if (!Receiver || !isSelfExpr(Receiver)) { 1236759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian Method = LookupFactoryMethodInGlobalPool(Sel, 1237759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian SourceRange(LBracLoc, RBracLoc), 1238759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian true); 1239759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian if (!Method) { 1240759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian // If no class (factory) method was found, check if an _instance_ 1241759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian // method of the same name exists in the root class only. 1242759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian Method = LookupInstanceMethodInGlobalPool(Sel, 12436b308f6dc7d8f1581c52095f435c0e1284b111d8Fariborz Jahanian SourceRange(LBracLoc, RBracLoc), 1244759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian true); 1245759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian if (Method) 1246759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian if (const ObjCInterfaceDecl *ID = 1247759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian dyn_cast<ObjCInterfaceDecl>(Method->getDeclContext())) { 1248759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian if (ID->getSuperClass()) 1249759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian Diag(Loc, diag::warn_root_inst_method_not_found) 1250759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian << Sel << SourceRange(LBracLoc, RBracLoc); 1251759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian } 1252759abb4d9ec14ae32104a9677b60f0542b60d1d8Fariborz Jahanian } 125304badcf84c8d504d8491c7c7e29b58f52cb16640Douglas Gregor } 125404badcf84c8d504d8491c7c7e29b58f52cb16640Douglas Gregor } 125504badcf84c8d504d8491c7c7e29b58f52cb16640Douglas Gregor } 125604badcf84c8d504d8491c7c7e29b58f52cb16640Douglas Gregor } else { 1257f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor ObjCInterfaceDecl* ClassDecl = 0; 1258f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor 1259f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor // We allow sending a message to a qualified ID ("id<foo>"), which is ok as 1260f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor // long as one of the protocols implements the selector (if not, warn). 1261f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor if (const ObjCObjectPointerType *QIdTy 1262f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor = ReceiverType->getAsObjCQualifiedIdType()) { 1263f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor // Search protocols for instance methods. 126427569b0f3e1b27f609a2e104b39bad077850e210Fariborz Jahanian Method = LookupMethodInQualifiedType(Sel, QIdTy, true); 126527569b0f3e1b27f609a2e104b39bad077850e210Fariborz Jahanian if (!Method) 126627569b0f3e1b27f609a2e104b39bad077850e210Fariborz Jahanian Method = LookupMethodInQualifiedType(Sel, QIdTy, false); 1267f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor } else if (const ObjCObjectPointerType *OCIType 1268f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor = ReceiverType->getAsObjCInterfacePointerType()) { 1269f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor // We allow sending a message to a pointer to an interface (an object). 1270f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor ClassDecl = OCIType->getInterfaceDecl(); 1271f85e193739c953358c865005855253af4f68a497John McCall 1272f85e193739c953358c865005855253af4f68a497John McCall if (ClassDecl->isForwardDecl() && getLangOptions().ObjCAutoRefCount) { 1273f85e193739c953358c865005855253af4f68a497John McCall Diag(Loc, diag::err_arc_receiver_forward_instance) 1274f85e193739c953358c865005855253af4f68a497John McCall << OCIType->getPointeeType() 1275f85e193739c953358c865005855253af4f68a497John McCall << (Receiver ? Receiver->getSourceRange() : SourceRange(SuperLoc)); 1276f85e193739c953358c865005855253af4f68a497John McCall return ExprError(); 1277f85e193739c953358c865005855253af4f68a497John McCall } 1278f85e193739c953358c865005855253af4f68a497John McCall 1279f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor // FIXME: consider using LookupInstanceMethodInGlobalPool, since it will be 1280f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor // faster than the following method (which can do *many* linear searches). 1281db9d2145f1d85f64dba2c9b92416621ce01090a6Sebastian Redl // The idea is to add class info to MethodPool. 1282f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor Method = ClassDecl->lookupInstanceMethod(Sel); 1283f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor 128427569b0f3e1b27f609a2e104b39bad077850e210Fariborz Jahanian if (!Method) 1285f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor // Search protocol qualifiers. 128627569b0f3e1b27f609a2e104b39bad077850e210Fariborz Jahanian Method = LookupMethodInQualifiedType(Sel, OCIType, true); 128727569b0f3e1b27f609a2e104b39bad077850e210Fariborz Jahanian 128889ebaed91cca7fd296ec7804e4e9fb68949c1d0eFariborz Jahanian const ObjCInterfaceDecl *forwardClass = 0; 1289f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor if (!Method) { 1290f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor // If we have implementations in scope, check "private" methods. 1291f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor Method = LookupPrivateInstanceMethod(Sel, ClassDecl); 1292f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor 1293f85e193739c953358c865005855253af4f68a497John McCall if (!Method && getLangOptions().ObjCAutoRefCount) { 1294f85e193739c953358c865005855253af4f68a497John McCall Diag(Loc, diag::err_arc_may_not_respond) 1295f85e193739c953358c865005855253af4f68a497John McCall << OCIType->getPointeeType() << Sel; 1296f85e193739c953358c865005855253af4f68a497John McCall return ExprError(); 1297f85e193739c953358c865005855253af4f68a497John McCall } 1298f85e193739c953358c865005855253af4f68a497John McCall 1299f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor if (!Method && (!Receiver || !isSelfExpr(Receiver))) { 1300f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor // If we still haven't found a method, look in the global pool. This 1301f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor // behavior isn't very desirable, however we need it for GCC 1302f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor // compatibility. FIXME: should we deviate?? 1303f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor if (OCIType->qual_empty()) { 1304f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor Method = LookupInstanceMethodInGlobalPool(Sel, 13058e5fc9be37c6828ad008f22730e3baac1bef1686Fariborz Jahanian SourceRange(LBracLoc, RBracLoc)); 130689ebaed91cca7fd296ec7804e4e9fb68949c1d0eFariborz Jahanian if (OCIType->getInterfaceDecl()->isForwardDecl()) 130789ebaed91cca7fd296ec7804e4e9fb68949c1d0eFariborz Jahanian forwardClass = OCIType->getInterfaceDecl(); 13088e5fc9be37c6828ad008f22730e3baac1bef1686Fariborz Jahanian if (Method && !forwardClass) 1309f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor Diag(Loc, diag::warn_maynot_respond) 1310f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor << OCIType->getInterfaceDecl()->getIdentifier() << Sel; 1311f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor } 1312f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor } 1313f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor } 13148e5fc9be37c6828ad008f22730e3baac1bef1686Fariborz Jahanian if (Method && DiagnoseUseOfDecl(Method, Loc, forwardClass)) 1315f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor return ExprError(); 1316f85e193739c953358c865005855253af4f68a497John McCall } else if (!getLangOptions().ObjCAutoRefCount && 1317f85e193739c953358c865005855253af4f68a497John McCall !Context.getObjCIdType().isNull() && 1318f60946222721d9ba3c059563935c17b84703187aDouglas Gregor (ReceiverType->isPointerType() || 1319f60946222721d9ba3c059563935c17b84703187aDouglas Gregor ReceiverType->isIntegerType())) { 1320f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor // Implicitly convert integers and pointers to 'id' but emit a warning. 1321f85e193739c953358c865005855253af4f68a497John McCall // But not in ARC. 1322f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor Diag(Loc, diag::warn_bad_receiver_type) 1323f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor << ReceiverType 1324f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor << Receiver->getSourceRange(); 1325f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor if (ReceiverType->isPointerType()) 1326429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley Receiver = ImpCastExprToType(Receiver, Context.getObjCIdType(), 1327429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley CK_BitCast).take(); 1328404cd1669c3ba138a9ae0a619bd689cce5aae271John McCall else { 1329404cd1669c3ba138a9ae0a619bd689cce5aae271John McCall // TODO: specialized warning on null receivers? 1330404cd1669c3ba138a9ae0a619bd689cce5aae271John McCall bool IsNull = Receiver->isNullPointerConstant(Context, 1331404cd1669c3ba138a9ae0a619bd689cce5aae271John McCall Expr::NPC_ValueDependentIsNull); 1332429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley Receiver = ImpCastExprToType(Receiver, Context.getObjCIdType(), 1333429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley IsNull ? CK_NullToPointer : CK_IntegralToPointer).take(); 1334404cd1669c3ba138a9ae0a619bd689cce5aae271John McCall } 1335f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor ReceiverType = Receiver->getType(); 133679d3f04688497857d29fe1f009bbc7b4b830a21bFariborz Jahanian } 1337429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley else { 1338429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley ExprResult ReceiverRes; 1339429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if (getLangOptions().CPlusPlus) 1340429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley ReceiverRes = PerformContextuallyConvertToObjCId(Receiver); 1341429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if (ReceiverRes.isUsable()) { 1342429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley Receiver = ReceiverRes.take(); 1343429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if (ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(Receiver)) { 1344429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley Receiver = ICE->getSubExpr(); 1345429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley ReceiverType = Receiver->getType(); 1346429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley } 1347429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley return BuildInstanceMessage(Receiver, 1348429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley ReceiverType, 1349429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley SuperLoc, 1350429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley Sel, 1351429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley Method, 1352429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley LBracLoc, 1353429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley SelectorLoc, 1354429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley RBracLoc, 1355429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley move(ArgsIn)); 1356429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley } else { 1357429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley // Reject other random receiver types (e.g. structs). 1358429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley Diag(Loc, diag::err_bad_receiver_type) 1359429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley << ReceiverType << Receiver->getSourceRange(); 1360429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley return ExprError(); 13613ba606199be8056ae83596260bd6fd5872942905Fariborz Jahanian } 1362f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor } 136304badcf84c8d504d8491c7c7e29b58f52cb16640Douglas Gregor } 1364fe1a553256b46fad3c0a9e9967481bcf571339ecChris Lattner } 13651eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 13662725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor // Check the message arguments. 13672725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor unsigned NumArgs = ArgsIn.size(); 13682725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor Expr **Args = reinterpret_cast<Expr **>(ArgsIn.release()); 13692725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor QualType ReturnType; 1370f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall ExprValueKind VK = VK_RValue; 13712600503170c8366af2587408c50e2beedee5d1f1Fariborz Jahanian bool ClassMessage = (ReceiverType->isObjCClassType() || 13722600503170c8366af2587408c50e2beedee5d1f1Fariborz Jahanian ReceiverType->isObjCQualifiedClassType()); 1373926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor if (CheckMessageArgumentTypes(ReceiverType, Args, NumArgs, Sel, Method, 1374926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor ClassMessage, SuperLoc.isValid(), 1375f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall LBracLoc, RBracLoc, ReturnType, VK)) 13762725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor return ExprError(); 1377da59e09f1fd53350fcd949adbadd8148117f21b2Fariborz Jahanian 1378483dd2f55ee53bc765123ead3428aa4ad2682cf3Douglas Gregor if (Method && !Method->getResultType()->isVoidType() && 1379483dd2f55ee53bc765123ead3428aa4ad2682cf3Douglas Gregor RequireCompleteType(LBracLoc, Method->getResultType(), 1380483dd2f55ee53bc765123ead3428aa4ad2682cf3Douglas Gregor diag::err_illegal_message_expr_incomplete_type)) 1381483dd2f55ee53bc765123ead3428aa4ad2682cf3Douglas Gregor return ExprError(); 138204badcf84c8d504d8491c7c7e29b58f52cb16640Douglas Gregor 1383f85e193739c953358c865005855253af4f68a497John McCall // In ARC, forbid the user from sending messages to 1384f85e193739c953358c865005855253af4f68a497John McCall // retain/release/autorelease/dealloc/retainCount explicitly. 1385f85e193739c953358c865005855253af4f68a497John McCall if (getLangOptions().ObjCAutoRefCount) { 1386f85e193739c953358c865005855253af4f68a497John McCall ObjCMethodFamily family = 1387f85e193739c953358c865005855253af4f68a497John McCall (Method ? Method->getMethodFamily() : Sel.getMethodFamily()); 1388f85e193739c953358c865005855253af4f68a497John McCall switch (family) { 1389f85e193739c953358c865005855253af4f68a497John McCall case OMF_init: 1390f85e193739c953358c865005855253af4f68a497John McCall if (Method) 1391f85e193739c953358c865005855253af4f68a497John McCall checkInitMethod(Method, ReceiverType); 1392f85e193739c953358c865005855253af4f68a497John McCall 1393f85e193739c953358c865005855253af4f68a497John McCall case OMF_None: 1394f85e193739c953358c865005855253af4f68a497John McCall case OMF_alloc: 1395f85e193739c953358c865005855253af4f68a497John McCall case OMF_copy: 1396f85e193739c953358c865005855253af4f68a497John McCall case OMF_mutableCopy: 1397f85e193739c953358c865005855253af4f68a497John McCall case OMF_new: 1398f85e193739c953358c865005855253af4f68a497John McCall case OMF_self: 1399f85e193739c953358c865005855253af4f68a497John McCall break; 1400f85e193739c953358c865005855253af4f68a497John McCall 1401f85e193739c953358c865005855253af4f68a497John McCall case OMF_dealloc: 1402f85e193739c953358c865005855253af4f68a497John McCall case OMF_retain: 1403f85e193739c953358c865005855253af4f68a497John McCall case OMF_release: 1404f85e193739c953358c865005855253af4f68a497John McCall case OMF_autorelease: 1405f85e193739c953358c865005855253af4f68a497John McCall case OMF_retainCount: 1406f85e193739c953358c865005855253af4f68a497John McCall Diag(Loc, diag::err_arc_illegal_explicit_message) 1407f85e193739c953358c865005855253af4f68a497John McCall << Sel << SelectorLoc; 1408f85e193739c953358c865005855253af4f68a497John McCall break; 1409f85e193739c953358c865005855253af4f68a497John McCall } 1410f85e193739c953358c865005855253af4f68a497John McCall } 1411f85e193739c953358c865005855253af4f68a497John McCall 14122725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor // Construct the appropriate ObjCMessageExpr instance. 1413f85e193739c953358c865005855253af4f68a497John McCall ObjCMessageExpr *Result; 14142725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor if (SuperLoc.isValid()) 1415f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall Result = ObjCMessageExpr::Create(Context, ReturnType, VK, LBracLoc, 14162d6b0e94db30c0e2754d270753c6f75478e451bfDouglas Gregor SuperLoc, /*IsInstanceSuper=*/true, 1417f40f0d5a382395e0301d7dcbeaa2b8e90b8973b1Argyrios Kyrtzidis ReceiverType, Sel, SelectorLoc, Method, 14182d6b0e94db30c0e2754d270753c6f75478e451bfDouglas Gregor Args, NumArgs, RBracLoc); 14192d6b0e94db30c0e2754d270753c6f75478e451bfDouglas Gregor else 1420f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall Result = ObjCMessageExpr::Create(Context, ReturnType, VK, LBracLoc, 1421f40f0d5a382395e0301d7dcbeaa2b8e90b8973b1Argyrios Kyrtzidis Receiver, Sel, SelectorLoc, Method, 1422f40f0d5a382395e0301d7dcbeaa2b8e90b8973b1Argyrios Kyrtzidis Args, NumArgs, RBracLoc); 1423f85e193739c953358c865005855253af4f68a497John McCall 1424f85e193739c953358c865005855253af4f68a497John McCall if (getLangOptions().ObjCAutoRefCount) { 1425f85e193739c953358c865005855253af4f68a497John McCall // In ARC, annotate delegate init calls. 1426f85e193739c953358c865005855253af4f68a497John McCall if (Result->getMethodFamily() == OMF_init && 1427f85e193739c953358c865005855253af4f68a497John McCall (SuperLoc.isValid() || isSelfExpr(Receiver))) { 1428f85e193739c953358c865005855253af4f68a497John McCall // Only consider init calls *directly* in init implementations, 1429f85e193739c953358c865005855253af4f68a497John McCall // not within blocks. 1430f85e193739c953358c865005855253af4f68a497John McCall ObjCMethodDecl *method = dyn_cast<ObjCMethodDecl>(CurContext); 1431f85e193739c953358c865005855253af4f68a497John McCall if (method && method->getMethodFamily() == OMF_init) { 1432f85e193739c953358c865005855253af4f68a497John McCall // The implicit assignment to self means we also don't want to 1433f85e193739c953358c865005855253af4f68a497John McCall // consume the result. 1434f85e193739c953358c865005855253af4f68a497John McCall Result->setDelegateInitCall(true); 1435f85e193739c953358c865005855253af4f68a497John McCall return Owned(Result); 1436f85e193739c953358c865005855253af4f68a497John McCall } 1437f85e193739c953358c865005855253af4f68a497John McCall } 1438f85e193739c953358c865005855253af4f68a497John McCall 1439f85e193739c953358c865005855253af4f68a497John McCall // In ARC, check for message sends which are likely to introduce 1440f85e193739c953358c865005855253af4f68a497John McCall // retain cycles. 1441f85e193739c953358c865005855253af4f68a497John McCall checkRetainCycles(Result); 1442f85e193739c953358c865005855253af4f68a497John McCall } 1443f85e193739c953358c865005855253af4f68a497John McCall 14442d6b0e94db30c0e2754d270753c6f75478e451bfDouglas Gregor return MaybeBindToTemporary(Result); 14452725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor} 14462725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor 14472725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor// ActOnInstanceMessage - used for both unary and keyword messages. 14482725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor// ArgExprs is optional - if it is present, the number of expressions 14492725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor// is obtained from Sel.getNumArgs(). 145060d7b3a319d84d688752be3870615ac0f111fb16John McCallExprResult Sema::ActOnInstanceMessage(Scope *S, 145160d7b3a319d84d688752be3870615ac0f111fb16John McCall Expr *Receiver, 145260d7b3a319d84d688752be3870615ac0f111fb16John McCall Selector Sel, 145360d7b3a319d84d688752be3870615ac0f111fb16John McCall SourceLocation LBracLoc, 145460d7b3a319d84d688752be3870615ac0f111fb16John McCall SourceLocation SelectorLoc, 145560d7b3a319d84d688752be3870615ac0f111fb16John McCall SourceLocation RBracLoc, 145660d7b3a319d84d688752be3870615ac0f111fb16John McCall MultiExprArg Args) { 14572725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor if (!Receiver) 14582725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor return ExprError(); 145904badcf84c8d504d8491c7c7e29b58f52cb16640Douglas Gregor 14609ae2f076ca5ab1feb3ba95629099ec2319833701John McCall return BuildInstanceMessage(Receiver, Receiver->getType(), 1461f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor /*SuperLoc=*/SourceLocation(), Sel, /*Method=*/0, 1462f40f0d5a382395e0301d7dcbeaa2b8e90b8973b1Argyrios Kyrtzidis LBracLoc, SelectorLoc, RBracLoc, move(Args)); 146385a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner} 1464eca7be6b7ebd93682eeaab2c71d59f2995dacdccChris Lattner 1465f85e193739c953358c865005855253af4f68a497John McCallenum ARCConversionTypeClass { 1466f85e193739c953358c865005855253af4f68a497John McCall ACTC_none, 1467f85e193739c953358c865005855253af4f68a497John McCall ACTC_retainable, 1468f85e193739c953358c865005855253af4f68a497John McCall ACTC_indirectRetainable 1469f85e193739c953358c865005855253af4f68a497John McCall}; 1470f85e193739c953358c865005855253af4f68a497John McCallstatic ARCConversionTypeClass classifyTypeForARCConversion(QualType type) { 1471f85e193739c953358c865005855253af4f68a497John McCall ARCConversionTypeClass ACTC = ACTC_retainable; 1472f85e193739c953358c865005855253af4f68a497John McCall 1473f85e193739c953358c865005855253af4f68a497John McCall // Ignore an outermost reference type. 1474f85e193739c953358c865005855253af4f68a497John McCall if (const ReferenceType *ref = type->getAs<ReferenceType>()) 1475f85e193739c953358c865005855253af4f68a497John McCall type = ref->getPointeeType(); 1476f85e193739c953358c865005855253af4f68a497John McCall 1477f85e193739c953358c865005855253af4f68a497John McCall // Drill through pointers and arrays recursively. 1478f85e193739c953358c865005855253af4f68a497John McCall while (true) { 1479f85e193739c953358c865005855253af4f68a497John McCall if (const PointerType *ptr = type->getAs<PointerType>()) { 1480f85e193739c953358c865005855253af4f68a497John McCall type = ptr->getPointeeType(); 1481f85e193739c953358c865005855253af4f68a497John McCall } else if (const ArrayType *array = type->getAsArrayTypeUnsafe()) { 1482f85e193739c953358c865005855253af4f68a497John McCall type = QualType(array->getElementType()->getBaseElementTypeUnsafe(), 0); 1483f85e193739c953358c865005855253af4f68a497John McCall } else { 1484f85e193739c953358c865005855253af4f68a497John McCall break; 1485f85e193739c953358c865005855253af4f68a497John McCall } 1486f85e193739c953358c865005855253af4f68a497John McCall ACTC = ACTC_indirectRetainable; 1487f85e193739c953358c865005855253af4f68a497John McCall } 1488f85e193739c953358c865005855253af4f68a497John McCall 1489f85e193739c953358c865005855253af4f68a497John McCall if (!type->isObjCRetainableType()) return ACTC_none; 1490f85e193739c953358c865005855253af4f68a497John McCall return ACTC; 1491f85e193739c953358c865005855253af4f68a497John McCall} 1492f85e193739c953358c865005855253af4f68a497John McCall 1493f85e193739c953358c865005855253af4f68a497John McCallnamespace { 1494f85e193739c953358c865005855253af4f68a497John McCall /// Return true if the given expression can be reasonably converted 1495f85e193739c953358c865005855253af4f68a497John McCall /// between a retainable pointer type and a C pointer type. 1496f85e193739c953358c865005855253af4f68a497John McCall struct ARCCastChecker : StmtVisitor<ARCCastChecker, bool> { 1497f85e193739c953358c865005855253af4f68a497John McCall ASTContext &Context; 1498f85e193739c953358c865005855253af4f68a497John McCall ARCCastChecker(ASTContext &Context) : Context(Context) {} 1499f85e193739c953358c865005855253af4f68a497John McCall bool VisitStmt(Stmt *s) { 1500f85e193739c953358c865005855253af4f68a497John McCall return false; 1501f85e193739c953358c865005855253af4f68a497John McCall } 1502f85e193739c953358c865005855253af4f68a497John McCall bool VisitExpr(Expr *e) { 1503f85e193739c953358c865005855253af4f68a497John McCall return e->isNullPointerConstant(Context, Expr::NPC_ValueDependentIsNull); 1504f85e193739c953358c865005855253af4f68a497John McCall } 1505f85e193739c953358c865005855253af4f68a497John McCall 1506f85e193739c953358c865005855253af4f68a497John McCall bool VisitParenExpr(ParenExpr *e) { 1507f85e193739c953358c865005855253af4f68a497John McCall return Visit(e->getSubExpr()); 1508f85e193739c953358c865005855253af4f68a497John McCall } 1509f85e193739c953358c865005855253af4f68a497John McCall bool VisitCastExpr(CastExpr *e) { 1510f85e193739c953358c865005855253af4f68a497John McCall switch (e->getCastKind()) { 1511f85e193739c953358c865005855253af4f68a497John McCall case CK_NullToPointer: 1512f85e193739c953358c865005855253af4f68a497John McCall return true; 1513f85e193739c953358c865005855253af4f68a497John McCall case CK_NoOp: 1514f85e193739c953358c865005855253af4f68a497John McCall case CK_LValueToRValue: 1515f85e193739c953358c865005855253af4f68a497John McCall case CK_BitCast: 1516f85e193739c953358c865005855253af4f68a497John McCall case CK_AnyPointerToObjCPointerCast: 1517f85e193739c953358c865005855253af4f68a497John McCall case CK_AnyPointerToBlockPointerCast: 1518f85e193739c953358c865005855253af4f68a497John McCall return Visit(e->getSubExpr()); 1519f85e193739c953358c865005855253af4f68a497John McCall default: 1520f85e193739c953358c865005855253af4f68a497John McCall return false; 1521f85e193739c953358c865005855253af4f68a497John McCall } 1522f85e193739c953358c865005855253af4f68a497John McCall } 1523f85e193739c953358c865005855253af4f68a497John McCall bool VisitUnaryExtension(UnaryOperator *e) { 1524f85e193739c953358c865005855253af4f68a497John McCall return Visit(e->getSubExpr()); 1525f85e193739c953358c865005855253af4f68a497John McCall } 1526f85e193739c953358c865005855253af4f68a497John McCall bool VisitBinComma(BinaryOperator *e) { 1527f85e193739c953358c865005855253af4f68a497John McCall return Visit(e->getRHS()); 1528f85e193739c953358c865005855253af4f68a497John McCall } 1529f85e193739c953358c865005855253af4f68a497John McCall bool VisitConditionalOperator(ConditionalOperator *e) { 1530f85e193739c953358c865005855253af4f68a497John McCall // Conditional operators are okay if both sides are okay. 1531f85e193739c953358c865005855253af4f68a497John McCall return Visit(e->getTrueExpr()) && Visit(e->getFalseExpr()); 1532f85e193739c953358c865005855253af4f68a497John McCall } 1533f85e193739c953358c865005855253af4f68a497John McCall bool VisitObjCStringLiteral(ObjCStringLiteral *e) { 1534f85e193739c953358c865005855253af4f68a497John McCall // Always white-list Objective-C string literals. 1535f85e193739c953358c865005855253af4f68a497John McCall return true; 1536f85e193739c953358c865005855253af4f68a497John McCall } 1537f85e193739c953358c865005855253af4f68a497John McCall bool VisitStmtExpr(StmtExpr *e) { 1538f85e193739c953358c865005855253af4f68a497John McCall return Visit(e->getSubStmt()->body_back()); 1539f85e193739c953358c865005855253af4f68a497John McCall } 1540f85e193739c953358c865005855253af4f68a497John McCall bool VisitDeclRefExpr(DeclRefExpr *e) { 1541f85e193739c953358c865005855253af4f68a497John McCall // White-list references to global extern strings from system 1542f85e193739c953358c865005855253af4f68a497John McCall // headers. 1543f85e193739c953358c865005855253af4f68a497John McCall if (VarDecl *var = dyn_cast<VarDecl>(e->getDecl())) 1544f85e193739c953358c865005855253af4f68a497John McCall if (var->getStorageClass() == SC_Extern && 1545f85e193739c953358c865005855253af4f68a497John McCall var->getType().isConstQualified() && 1546f85e193739c953358c865005855253af4f68a497John McCall Context.getSourceManager().isInSystemHeader(var->getLocation())) 1547f85e193739c953358c865005855253af4f68a497John McCall return true; 1548f85e193739c953358c865005855253af4f68a497John McCall return false; 1549f85e193739c953358c865005855253af4f68a497John McCall } 1550f85e193739c953358c865005855253af4f68a497John McCall }; 1551f85e193739c953358c865005855253af4f68a497John McCall} 1552f85e193739c953358c865005855253af4f68a497John McCall 15531522a7c35e9872c5767721350fc8050be5b14fd2Fariborz Jahanianbool 1554af9751747b098d77052cb71f1e648f29cfbadcc1Fariborz JahanianSema::ValidObjCARCNoBridgeCastExpr(Expr *&Exp, QualType castType) { 1555c8505ad9182c3ddcfda42bee250b2c32dd1f3219Fariborz Jahanian Expr *NewExp = Exp->IgnoreParenCasts(); 1556af9751747b098d77052cb71f1e648f29cfbadcc1Fariborz Jahanian 1557c8505ad9182c3ddcfda42bee250b2c32dd1f3219Fariborz Jahanian if (!isa<ObjCMessageExpr>(NewExp) && !isa<ObjCPropertyRefExpr>(NewExp) 1558c8505ad9182c3ddcfda42bee250b2c32dd1f3219Fariborz Jahanian && !isa<CallExpr>(NewExp)) 1559af9751747b098d77052cb71f1e648f29cfbadcc1Fariborz Jahanian return false; 1560af9751747b098d77052cb71f1e648f29cfbadcc1Fariborz Jahanian ObjCMethodDecl *method = 0; 1561c8505ad9182c3ddcfda42bee250b2c32dd1f3219Fariborz Jahanian bool MethodReturnsPlusOne = false; 1562c8505ad9182c3ddcfda42bee250b2c32dd1f3219Fariborz Jahanian 1563af9751747b098d77052cb71f1e648f29cfbadcc1Fariborz Jahanian if (ObjCPropertyRefExpr *PRE = dyn_cast<ObjCPropertyRefExpr>(NewExp)) { 1564af9751747b098d77052cb71f1e648f29cfbadcc1Fariborz Jahanian method = PRE->getExplicitProperty()->getGetterMethodDecl(); 1565af9751747b098d77052cb71f1e648f29cfbadcc1Fariborz Jahanian } 1566c8505ad9182c3ddcfda42bee250b2c32dd1f3219Fariborz Jahanian else if (ObjCMessageExpr *ME = dyn_cast<ObjCMessageExpr>(NewExp)) 1567af9751747b098d77052cb71f1e648f29cfbadcc1Fariborz Jahanian method = ME->getMethodDecl(); 1568c8505ad9182c3ddcfda42bee250b2c32dd1f3219Fariborz Jahanian else { 1569c8505ad9182c3ddcfda42bee250b2c32dd1f3219Fariborz Jahanian CallExpr *CE = cast<CallExpr>(NewExp); 1570c8505ad9182c3ddcfda42bee250b2c32dd1f3219Fariborz Jahanian Decl *CallDecl = CE->getCalleeDecl(); 1571c8505ad9182c3ddcfda42bee250b2c32dd1f3219Fariborz Jahanian if (!CallDecl) 1572c8505ad9182c3ddcfda42bee250b2c32dd1f3219Fariborz Jahanian return false; 1573c8505ad9182c3ddcfda42bee250b2c32dd1f3219Fariborz Jahanian if (CallDecl->hasAttr<CFReturnsNotRetainedAttr>()) 1574c8505ad9182c3ddcfda42bee250b2c32dd1f3219Fariborz Jahanian return true; 1575c8505ad9182c3ddcfda42bee250b2c32dd1f3219Fariborz Jahanian MethodReturnsPlusOne = CallDecl->hasAttr<CFReturnsRetainedAttr>(); 1576c8505ad9182c3ddcfda42bee250b2c32dd1f3219Fariborz Jahanian if (!MethodReturnsPlusOne) { 1577c8505ad9182c3ddcfda42bee250b2c32dd1f3219Fariborz Jahanian if (NamedDecl *ND = dyn_cast<NamedDecl>(CallDecl)) 1578c8505ad9182c3ddcfda42bee250b2c32dd1f3219Fariborz Jahanian if (const IdentifierInfo *Id = ND->getIdentifier()) 1579c8505ad9182c3ddcfda42bee250b2c32dd1f3219Fariborz Jahanian if (Id->isStr("__builtin___CFStringMakeConstantString")) 1580c8505ad9182c3ddcfda42bee250b2c32dd1f3219Fariborz Jahanian return true; 1581c8505ad9182c3ddcfda42bee250b2c32dd1f3219Fariborz Jahanian } 1582af9751747b098d77052cb71f1e648f29cfbadcc1Fariborz Jahanian } 1583c8505ad9182c3ddcfda42bee250b2c32dd1f3219Fariborz Jahanian 1584af9751747b098d77052cb71f1e648f29cfbadcc1Fariborz Jahanian if (!MethodReturnsPlusOne) { 1585c8505ad9182c3ddcfda42bee250b2c32dd1f3219Fariborz Jahanian if (!method) 1586c8505ad9182c3ddcfda42bee250b2c32dd1f3219Fariborz Jahanian return false; 1587c8505ad9182c3ddcfda42bee250b2c32dd1f3219Fariborz Jahanian if (method->hasAttr<CFReturnsNotRetainedAttr>()) 1588c8505ad9182c3ddcfda42bee250b2c32dd1f3219Fariborz Jahanian return true; 1589c8505ad9182c3ddcfda42bee250b2c32dd1f3219Fariborz Jahanian MethodReturnsPlusOne = method->hasAttr<CFReturnsRetainedAttr>(); 1590c8505ad9182c3ddcfda42bee250b2c32dd1f3219Fariborz Jahanian if (!MethodReturnsPlusOne) { 1591c8505ad9182c3ddcfda42bee250b2c32dd1f3219Fariborz Jahanian ObjCMethodFamily family = method->getSelector().getMethodFamily(); 1592c8505ad9182c3ddcfda42bee250b2c32dd1f3219Fariborz Jahanian switch (family) { 1593c8505ad9182c3ddcfda42bee250b2c32dd1f3219Fariborz Jahanian case OMF_alloc: 1594c8505ad9182c3ddcfda42bee250b2c32dd1f3219Fariborz Jahanian case OMF_copy: 1595c8505ad9182c3ddcfda42bee250b2c32dd1f3219Fariborz Jahanian case OMF_mutableCopy: 1596c8505ad9182c3ddcfda42bee250b2c32dd1f3219Fariborz Jahanian case OMF_new: 1597c8505ad9182c3ddcfda42bee250b2c32dd1f3219Fariborz Jahanian MethodReturnsPlusOne = true; 1598c8505ad9182c3ddcfda42bee250b2c32dd1f3219Fariborz Jahanian break; 1599c8505ad9182c3ddcfda42bee250b2c32dd1f3219Fariborz Jahanian default: 1600c8505ad9182c3ddcfda42bee250b2c32dd1f3219Fariborz Jahanian break; 1601c8505ad9182c3ddcfda42bee250b2c32dd1f3219Fariborz Jahanian } 1602af9751747b098d77052cb71f1e648f29cfbadcc1Fariborz Jahanian } 1603af9751747b098d77052cb71f1e648f29cfbadcc1Fariborz Jahanian } 1604c8505ad9182c3ddcfda42bee250b2c32dd1f3219Fariborz Jahanian 1605af9751747b098d77052cb71f1e648f29cfbadcc1Fariborz Jahanian if (MethodReturnsPlusOne) { 1606af9751747b098d77052cb71f1e648f29cfbadcc1Fariborz Jahanian TypeSourceInfo *TSInfo = 1607af9751747b098d77052cb71f1e648f29cfbadcc1Fariborz Jahanian Context.getTrivialTypeSourceInfo(castType, SourceLocation()); 1608af9751747b098d77052cb71f1e648f29cfbadcc1Fariborz Jahanian ExprResult ExpRes = BuildObjCBridgedCast(SourceLocation(), OBC_BridgeTransfer, 1609af9751747b098d77052cb71f1e648f29cfbadcc1Fariborz Jahanian SourceLocation(), TSInfo, Exp); 1610af9751747b098d77052cb71f1e648f29cfbadcc1Fariborz Jahanian Exp = ExpRes.take(); 1611af9751747b098d77052cb71f1e648f29cfbadcc1Fariborz Jahanian } 1612af9751747b098d77052cb71f1e648f29cfbadcc1Fariborz Jahanian return true; 16131522a7c35e9872c5767721350fc8050be5b14fd2Fariborz Jahanian} 16141522a7c35e9872c5767721350fc8050be5b14fd2Fariborz Jahanian 1615f85e193739c953358c865005855253af4f68a497John McCallvoid 1616f85e193739c953358c865005855253af4f68a497John McCallSema::CheckObjCARCConversion(SourceRange castRange, QualType castType, 1617af9751747b098d77052cb71f1e648f29cfbadcc1Fariborz Jahanian Expr *&castExpr, CheckedConversionKind CCK) { 1618f85e193739c953358c865005855253af4f68a497John McCall QualType castExprType = castExpr->getType(); 1619f85e193739c953358c865005855253af4f68a497John McCall 1620f85e193739c953358c865005855253af4f68a497John McCall ARCConversionTypeClass exprACTC = classifyTypeForARCConversion(castExprType); 1621f85e193739c953358c865005855253af4f68a497John McCall ARCConversionTypeClass castACTC = classifyTypeForARCConversion(castType); 1622f85e193739c953358c865005855253af4f68a497John McCall if (exprACTC == castACTC) return; 1623f85e193739c953358c865005855253af4f68a497John McCall if (exprACTC && castType->isBooleanType()) return; 1624f85e193739c953358c865005855253af4f68a497John McCall 1625f85e193739c953358c865005855253af4f68a497John McCall // Allow casts between pointers to lifetime types (e.g., __strong id*) 1626f85e193739c953358c865005855253af4f68a497John McCall // and pointers to void (e.g., cv void *). Casting from void* to lifetime* 1627f85e193739c953358c865005855253af4f68a497John McCall // must be explicit. 1628f85e193739c953358c865005855253af4f68a497John McCall if (const PointerType *CastPtr = castType->getAs<PointerType>()) { 1629f85e193739c953358c865005855253af4f68a497John McCall if (const PointerType *CastExprPtr = castExprType->getAs<PointerType>()) { 1630f85e193739c953358c865005855253af4f68a497John McCall QualType CastPointee = CastPtr->getPointeeType(); 1631f85e193739c953358c865005855253af4f68a497John McCall QualType CastExprPointee = CastExprPtr->getPointeeType(); 1632f85e193739c953358c865005855253af4f68a497John McCall if ((CCK != CCK_ImplicitConversion && 1633f85e193739c953358c865005855253af4f68a497John McCall CastPointee->isObjCIndirectLifetimeType() && 1634f85e193739c953358c865005855253af4f68a497John McCall CastExprPointee->isVoidType()) || 1635f85e193739c953358c865005855253af4f68a497John McCall (CastPointee->isVoidType() && 1636f85e193739c953358c865005855253af4f68a497John McCall CastExprPointee->isObjCIndirectLifetimeType())) 1637f85e193739c953358c865005855253af4f68a497John McCall return; 1638f85e193739c953358c865005855253af4f68a497John McCall } 1639f85e193739c953358c865005855253af4f68a497John McCall } 1640f85e193739c953358c865005855253af4f68a497John McCall 1641f85e193739c953358c865005855253af4f68a497John McCall if (ARCCastChecker(Context).Visit(castExpr)) 1642f85e193739c953358c865005855253af4f68a497John McCall return; 1643f85e193739c953358c865005855253af4f68a497John McCall 1644f85e193739c953358c865005855253af4f68a497John McCall SourceLocation loc = 1645f85e193739c953358c865005855253af4f68a497John McCall (castRange.isValid() ? castRange.getBegin() : castExpr->getExprLoc()); 1646f85e193739c953358c865005855253af4f68a497John McCall 1647f85e193739c953358c865005855253af4f68a497John McCall if (makeUnavailableInSystemHeader(loc, 1648f85e193739c953358c865005855253af4f68a497John McCall "converts between Objective-C and C pointers in -fobjc-arc")) 1649f85e193739c953358c865005855253af4f68a497John McCall return; 1650f85e193739c953358c865005855253af4f68a497John McCall 165171c482c76c67ad4240757c4e319ffdb72272b8eeJohn McCall unsigned srcKind = 0; 1652f85e193739c953358c865005855253af4f68a497John McCall switch (exprACTC) { 1653f85e193739c953358c865005855253af4f68a497John McCall case ACTC_none: 1654f85e193739c953358c865005855253af4f68a497John McCall srcKind = (castExprType->isPointerType() ? 1 : 0); 1655f85e193739c953358c865005855253af4f68a497John McCall break; 1656f85e193739c953358c865005855253af4f68a497John McCall case ACTC_retainable: 1657f85e193739c953358c865005855253af4f68a497John McCall srcKind = (castExprType->isBlockPointerType() ? 2 : 3); 1658f85e193739c953358c865005855253af4f68a497John McCall break; 1659f85e193739c953358c865005855253af4f68a497John McCall case ACTC_indirectRetainable: 1660f85e193739c953358c865005855253af4f68a497John McCall srcKind = 4; 1661f85e193739c953358c865005855253af4f68a497John McCall break; 1662f85e193739c953358c865005855253af4f68a497John McCall } 1663f85e193739c953358c865005855253af4f68a497John McCall 1664f85e193739c953358c865005855253af4f68a497John McCall if (CCK == CCK_CStyleCast) { 1665f85e193739c953358c865005855253af4f68a497John McCall // Check whether this could be fixed with a bridge cast. 1666f85e193739c953358c865005855253af4f68a497John McCall SourceLocation AfterLParen = PP.getLocForEndOfToken(castRange.getBegin()); 1667f85e193739c953358c865005855253af4f68a497John McCall SourceLocation NoteLoc = AfterLParen.isValid()? AfterLParen : loc; 1668f85e193739c953358c865005855253af4f68a497John McCall 1669f85e193739c953358c865005855253af4f68a497John McCall if (castType->isObjCARCBridgableType() && 1670f85e193739c953358c865005855253af4f68a497John McCall castExprType->isCARCBridgableType()) { 16711522a7c35e9872c5767721350fc8050be5b14fd2Fariborz Jahanian // explicit unbridged casts are allowed if the source of the cast is a 16721522a7c35e9872c5767721350fc8050be5b14fd2Fariborz Jahanian // message sent to an objc method (or property access) 1673af9751747b098d77052cb71f1e648f29cfbadcc1Fariborz Jahanian if (ValidObjCARCNoBridgeCastExpr(castExpr, castType)) 16741522a7c35e9872c5767721350fc8050be5b14fd2Fariborz Jahanian return; 1675f85e193739c953358c865005855253af4f68a497John McCall Diag(loc, diag::err_arc_cast_requires_bridge) 1676f85e193739c953358c865005855253af4f68a497John McCall << 2 1677f85e193739c953358c865005855253af4f68a497John McCall << castExprType 1678f85e193739c953358c865005855253af4f68a497John McCall << (castType->isBlockPointerType()? 1 : 0) 1679f85e193739c953358c865005855253af4f68a497John McCall << castType 1680f85e193739c953358c865005855253af4f68a497John McCall << castRange 1681f85e193739c953358c865005855253af4f68a497John McCall << castExpr->getSourceRange(); 1682f85e193739c953358c865005855253af4f68a497John McCall Diag(NoteLoc, diag::note_arc_bridge) 1683f85e193739c953358c865005855253af4f68a497John McCall << FixItHint::CreateInsertion(AfterLParen, "__bridge "); 1684f85e193739c953358c865005855253af4f68a497John McCall Diag(NoteLoc, diag::note_arc_bridge_transfer) 1685f85e193739c953358c865005855253af4f68a497John McCall << castExprType 1686f85e193739c953358c865005855253af4f68a497John McCall << FixItHint::CreateInsertion(AfterLParen, "__bridge_transfer "); 1687f85e193739c953358c865005855253af4f68a497John McCall 1688f85e193739c953358c865005855253af4f68a497John McCall return; 1689f85e193739c953358c865005855253af4f68a497John McCall } 1690f85e193739c953358c865005855253af4f68a497John McCall 1691f85e193739c953358c865005855253af4f68a497John McCall if (castType->isCARCBridgableType() && 1692f85e193739c953358c865005855253af4f68a497John McCall castExprType->isObjCARCBridgableType()){ 1693f85e193739c953358c865005855253af4f68a497John McCall Diag(loc, diag::err_arc_cast_requires_bridge) 1694f85e193739c953358c865005855253af4f68a497John McCall << (castExprType->isBlockPointerType()? 1 : 0) 1695f85e193739c953358c865005855253af4f68a497John McCall << castExprType 1696f85e193739c953358c865005855253af4f68a497John McCall << 2 1697f85e193739c953358c865005855253af4f68a497John McCall << castType 1698f85e193739c953358c865005855253af4f68a497John McCall << castRange 1699f85e193739c953358c865005855253af4f68a497John McCall << castExpr->getSourceRange(); 1700f85e193739c953358c865005855253af4f68a497John McCall 1701f85e193739c953358c865005855253af4f68a497John McCall Diag(NoteLoc, diag::note_arc_bridge) 1702f85e193739c953358c865005855253af4f68a497John McCall << FixItHint::CreateInsertion(AfterLParen, "__bridge "); 1703f85e193739c953358c865005855253af4f68a497John McCall Diag(NoteLoc, diag::note_arc_bridge_retained) 1704f85e193739c953358c865005855253af4f68a497John McCall << castType 1705f85e193739c953358c865005855253af4f68a497John McCall << FixItHint::CreateInsertion(AfterLParen, "__bridge_retained "); 1706f85e193739c953358c865005855253af4f68a497John McCall return; 1707f85e193739c953358c865005855253af4f68a497John McCall } 1708f85e193739c953358c865005855253af4f68a497John McCall } 1709f85e193739c953358c865005855253af4f68a497John McCall 1710f85e193739c953358c865005855253af4f68a497John McCall Diag(loc, diag::err_arc_mismatched_cast) 1711f85e193739c953358c865005855253af4f68a497John McCall << (CCK != CCK_ImplicitConversion) << srcKind << castExprType << castType 1712f85e193739c953358c865005855253af4f68a497John McCall << castRange << castExpr->getSourceRange(); 1713f85e193739c953358c865005855253af4f68a497John McCall} 1714f85e193739c953358c865005855253af4f68a497John McCall 1715f85e193739c953358c865005855253af4f68a497John McCallExprResult Sema::BuildObjCBridgedCast(SourceLocation LParenLoc, 1716f85e193739c953358c865005855253af4f68a497John McCall ObjCBridgeCastKind Kind, 1717f85e193739c953358c865005855253af4f68a497John McCall SourceLocation BridgeKeywordLoc, 1718f85e193739c953358c865005855253af4f68a497John McCall TypeSourceInfo *TSInfo, 1719f85e193739c953358c865005855253af4f68a497John McCall Expr *SubExpr) { 1720f85e193739c953358c865005855253af4f68a497John McCall QualType T = TSInfo->getType(); 1721f85e193739c953358c865005855253af4f68a497John McCall QualType FromType = SubExpr->getType(); 1722f85e193739c953358c865005855253af4f68a497John McCall 1723f85e193739c953358c865005855253af4f68a497John McCall bool MustConsume = false; 1724f85e193739c953358c865005855253af4f68a497John McCall if (T->isDependentType() || SubExpr->isTypeDependent()) { 1725f85e193739c953358c865005855253af4f68a497John McCall // Okay: we'll build a dependent expression type. 1726f85e193739c953358c865005855253af4f68a497John McCall } else if (T->isObjCARCBridgableType() && FromType->isCARCBridgableType()) { 1727f85e193739c953358c865005855253af4f68a497John McCall // Casting CF -> id 1728f85e193739c953358c865005855253af4f68a497John McCall switch (Kind) { 1729f85e193739c953358c865005855253af4f68a497John McCall case OBC_Bridge: 1730f85e193739c953358c865005855253af4f68a497John McCall break; 1731f85e193739c953358c865005855253af4f68a497John McCall 1732f85e193739c953358c865005855253af4f68a497John McCall case OBC_BridgeRetained: 1733f85e193739c953358c865005855253af4f68a497John McCall Diag(BridgeKeywordLoc, diag::err_arc_bridge_cast_wrong_kind) 1734f85e193739c953358c865005855253af4f68a497John McCall << 2 1735f85e193739c953358c865005855253af4f68a497John McCall << FromType 1736f85e193739c953358c865005855253af4f68a497John McCall << (T->isBlockPointerType()? 1 : 0) 1737f85e193739c953358c865005855253af4f68a497John McCall << T 1738f85e193739c953358c865005855253af4f68a497John McCall << SubExpr->getSourceRange() 1739f85e193739c953358c865005855253af4f68a497John McCall << Kind; 1740f85e193739c953358c865005855253af4f68a497John McCall Diag(BridgeKeywordLoc, diag::note_arc_bridge) 1741f85e193739c953358c865005855253af4f68a497John McCall << FixItHint::CreateReplacement(BridgeKeywordLoc, "__bridge"); 1742f85e193739c953358c865005855253af4f68a497John McCall Diag(BridgeKeywordLoc, diag::note_arc_bridge_transfer) 1743f85e193739c953358c865005855253af4f68a497John McCall << FromType 1744f85e193739c953358c865005855253af4f68a497John McCall << FixItHint::CreateReplacement(BridgeKeywordLoc, 1745f85e193739c953358c865005855253af4f68a497John McCall "__bridge_transfer "); 1746f85e193739c953358c865005855253af4f68a497John McCall 1747f85e193739c953358c865005855253af4f68a497John McCall Kind = OBC_Bridge; 1748f85e193739c953358c865005855253af4f68a497John McCall break; 1749f85e193739c953358c865005855253af4f68a497John McCall 1750f85e193739c953358c865005855253af4f68a497John McCall case OBC_BridgeTransfer: 1751f85e193739c953358c865005855253af4f68a497John McCall // We must consume the Objective-C object produced by the cast. 1752f85e193739c953358c865005855253af4f68a497John McCall MustConsume = true; 1753f85e193739c953358c865005855253af4f68a497John McCall break; 1754f85e193739c953358c865005855253af4f68a497John McCall } 1755f85e193739c953358c865005855253af4f68a497John McCall } else if (T->isCARCBridgableType() && FromType->isObjCARCBridgableType()) { 1756f85e193739c953358c865005855253af4f68a497John McCall // Okay: id -> CF 1757f85e193739c953358c865005855253af4f68a497John McCall switch (Kind) { 1758f85e193739c953358c865005855253af4f68a497John McCall case OBC_Bridge: 1759f85e193739c953358c865005855253af4f68a497John McCall break; 1760f85e193739c953358c865005855253af4f68a497John McCall 1761f85e193739c953358c865005855253af4f68a497John McCall case OBC_BridgeRetained: 1762f85e193739c953358c865005855253af4f68a497John McCall // Produce the object before casting it. 1763f85e193739c953358c865005855253af4f68a497John McCall SubExpr = ImplicitCastExpr::Create(Context, FromType, 1764f85e193739c953358c865005855253af4f68a497John McCall CK_ObjCProduceObject, 1765f85e193739c953358c865005855253af4f68a497John McCall SubExpr, 0, VK_RValue); 1766f85e193739c953358c865005855253af4f68a497John McCall break; 1767f85e193739c953358c865005855253af4f68a497John McCall 1768f85e193739c953358c865005855253af4f68a497John McCall case OBC_BridgeTransfer: 1769f85e193739c953358c865005855253af4f68a497John McCall Diag(BridgeKeywordLoc, diag::err_arc_bridge_cast_wrong_kind) 1770f85e193739c953358c865005855253af4f68a497John McCall << (FromType->isBlockPointerType()? 1 : 0) 1771f85e193739c953358c865005855253af4f68a497John McCall << FromType 1772f85e193739c953358c865005855253af4f68a497John McCall << 2 1773f85e193739c953358c865005855253af4f68a497John McCall << T 1774f85e193739c953358c865005855253af4f68a497John McCall << SubExpr->getSourceRange() 1775f85e193739c953358c865005855253af4f68a497John McCall << Kind; 1776f85e193739c953358c865005855253af4f68a497John McCall 1777f85e193739c953358c865005855253af4f68a497John McCall Diag(BridgeKeywordLoc, diag::note_arc_bridge) 1778f85e193739c953358c865005855253af4f68a497John McCall << FixItHint::CreateReplacement(BridgeKeywordLoc, "__bridge "); 1779f85e193739c953358c865005855253af4f68a497John McCall Diag(BridgeKeywordLoc, diag::note_arc_bridge_retained) 1780f85e193739c953358c865005855253af4f68a497John McCall << T 1781f85e193739c953358c865005855253af4f68a497John McCall << FixItHint::CreateReplacement(BridgeKeywordLoc, "__bridge_retained "); 1782f85e193739c953358c865005855253af4f68a497John McCall 1783f85e193739c953358c865005855253af4f68a497John McCall Kind = OBC_Bridge; 1784f85e193739c953358c865005855253af4f68a497John McCall break; 1785f85e193739c953358c865005855253af4f68a497John McCall } 1786f85e193739c953358c865005855253af4f68a497John McCall } else { 1787f85e193739c953358c865005855253af4f68a497John McCall Diag(LParenLoc, diag::err_arc_bridge_cast_incompatible) 1788f85e193739c953358c865005855253af4f68a497John McCall << FromType << T << Kind 1789f85e193739c953358c865005855253af4f68a497John McCall << SubExpr->getSourceRange() 1790f85e193739c953358c865005855253af4f68a497John McCall << TSInfo->getTypeLoc().getSourceRange(); 1791f85e193739c953358c865005855253af4f68a497John McCall return ExprError(); 1792f85e193739c953358c865005855253af4f68a497John McCall } 1793f85e193739c953358c865005855253af4f68a497John McCall 1794f85e193739c953358c865005855253af4f68a497John McCall Expr *Result = new (Context) ObjCBridgedCastExpr(LParenLoc, Kind, 1795f85e193739c953358c865005855253af4f68a497John McCall BridgeKeywordLoc, 1796f85e193739c953358c865005855253af4f68a497John McCall TSInfo, SubExpr); 1797f85e193739c953358c865005855253af4f68a497John McCall 1798f85e193739c953358c865005855253af4f68a497John McCall if (MustConsume) { 1799f85e193739c953358c865005855253af4f68a497John McCall ExprNeedsCleanups = true; 1800f85e193739c953358c865005855253af4f68a497John McCall Result = ImplicitCastExpr::Create(Context, T, CK_ObjCConsumeObject, Result, 1801f85e193739c953358c865005855253af4f68a497John McCall 0, VK_RValue); 1802f85e193739c953358c865005855253af4f68a497John McCall } 1803f85e193739c953358c865005855253af4f68a497John McCall 1804f85e193739c953358c865005855253af4f68a497John McCall return Result; 1805f85e193739c953358c865005855253af4f68a497John McCall} 1806f85e193739c953358c865005855253af4f68a497John McCall 1807f85e193739c953358c865005855253af4f68a497John McCallExprResult Sema::ActOnObjCBridgedCast(Scope *S, 1808f85e193739c953358c865005855253af4f68a497John McCall SourceLocation LParenLoc, 1809f85e193739c953358c865005855253af4f68a497John McCall ObjCBridgeCastKind Kind, 1810f85e193739c953358c865005855253af4f68a497John McCall SourceLocation BridgeKeywordLoc, 1811f85e193739c953358c865005855253af4f68a497John McCall ParsedType Type, 1812f85e193739c953358c865005855253af4f68a497John McCall SourceLocation RParenLoc, 1813f85e193739c953358c865005855253af4f68a497John McCall Expr *SubExpr) { 1814f85e193739c953358c865005855253af4f68a497John McCall TypeSourceInfo *TSInfo = 0; 1815f85e193739c953358c865005855253af4f68a497John McCall QualType T = GetTypeFromParser(Type, &TSInfo); 1816f85e193739c953358c865005855253af4f68a497John McCall if (!TSInfo) 1817f85e193739c953358c865005855253af4f68a497John McCall TSInfo = Context.getTrivialTypeSourceInfo(T, LParenLoc); 1818f85e193739c953358c865005855253af4f68a497John McCall return BuildObjCBridgedCast(LParenLoc, Kind, BridgeKeywordLoc, TSInfo, 1819f85e193739c953358c865005855253af4f68a497John McCall SubExpr); 1820f85e193739c953358c865005855253af4f68a497John McCall} 1821