SemaExprObjC.cpp revision 8a4377697161c5087e27cc40d6e0682f0cd1fa20
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 1485a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner#include "Sema.h" 157f81652f97a69ae8b514893a69c0245253687e55Chris Lattner#include "Lookup.h" 16688fc9b9b4323a294f5bf4f8a83f7c365edec573Douglas Gregor#include "SemaInit.h" 1785a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner#include "clang/AST/ASTContext.h" 1885a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner#include "clang/AST/DeclObjC.h" 19f494b579b22f9950f5af021f0bf9879a91bb8b41Steve Naroff#include "clang/AST/ExprObjC.h" 202725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor#include "clang/AST/TypeLoc.h" 2139c28bbbf235533e9ae7d06fb9b13371dfcc542dChris Lattner#include "llvm/ADT/SmallString.h" 2261f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff#include "clang/Lex/Preprocessor.h" 2361f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff 2485a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattnerusing namespace clang; 2585a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner 261eb4433ac451dc16f4133a88af2d002ac26c58efMike StumpSema::ExprResult Sema::ParseObjCStringLiteral(SourceLocation *AtLocs, 2739c28bbbf235533e9ae7d06fb9b13371dfcc542dChris Lattner ExprTy **strings, 2885a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner unsigned NumStrings) { 2939c28bbbf235533e9ae7d06fb9b13371dfcc542dChris Lattner StringLiteral **Strings = reinterpret_cast<StringLiteral**>(strings); 3039c28bbbf235533e9ae7d06fb9b13371dfcc542dChris Lattner 31f4b136fb40aeedeaaa6ce7cdff22f375eb76c47bChris Lattner // Most ObjC strings are formed out of a single piece. However, we *can* 32f4b136fb40aeedeaaa6ce7cdff22f375eb76c47bChris Lattner // have strings formed out of multiple @ strings with multiple pptokens in 33f4b136fb40aeedeaaa6ce7cdff22f375eb76c47bChris Lattner // each one, e.g. @"foo" "bar" @"baz" "qux" which need to be turned into one 34f4b136fb40aeedeaaa6ce7cdff22f375eb76c47bChris Lattner // StringLiteral for ObjCStringLiteral to hold onto. 3539c28bbbf235533e9ae7d06fb9b13371dfcc542dChris Lattner StringLiteral *S = Strings[0]; 361eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 37f4b136fb40aeedeaaa6ce7cdff22f375eb76c47bChris Lattner // If we have a multi-part string, merge it all together. 38f4b136fb40aeedeaaa6ce7cdff22f375eb76c47bChris Lattner if (NumStrings != 1) { 3985a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner // Concatenate objc strings. 4039c28bbbf235533e9ae7d06fb9b13371dfcc542dChris Lattner llvm::SmallString<128> StrBuf; 4139c28bbbf235533e9ae7d06fb9b13371dfcc542dChris Lattner llvm::SmallVector<SourceLocation, 8> StrLocs; 421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 43726e168dc09fb23f53c7b004f8e919421ee91806Chris Lattner for (unsigned i = 0; i != NumStrings; ++i) { 4439c28bbbf235533e9ae7d06fb9b13371dfcc542dChris Lattner S = Strings[i]; 451eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4639c28bbbf235533e9ae7d06fb9b13371dfcc542dChris Lattner // ObjC strings can't be wide. 47f4b136fb40aeedeaaa6ce7cdff22f375eb76c47bChris Lattner if (S->isWide()) { 48f4b136fb40aeedeaaa6ce7cdff22f375eb76c47bChris Lattner Diag(S->getLocStart(), diag::err_cfstring_literal_not_string_constant) 49f4b136fb40aeedeaaa6ce7cdff22f375eb76c47bChris Lattner << S->getSourceRange(); 50f4b136fb40aeedeaaa6ce7cdff22f375eb76c47bChris Lattner return true; 51f4b136fb40aeedeaaa6ce7cdff22f375eb76c47bChris Lattner } 521eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5339c28bbbf235533e9ae7d06fb9b13371dfcc542dChris Lattner // Get the string data. 5439c28bbbf235533e9ae7d06fb9b13371dfcc542dChris Lattner StrBuf.append(S->getStrData(), S->getStrData()+S->getByteLength()); 551eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5639c28bbbf235533e9ae7d06fb9b13371dfcc542dChris Lattner // Get the locations of the string tokens. 5739c28bbbf235533e9ae7d06fb9b13371dfcc542dChris Lattner StrLocs.append(S->tokloc_begin(), S->tokloc_end()); 581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5939c28bbbf235533e9ae7d06fb9b13371dfcc542dChris Lattner // Free the temporary string. 608189cde56b4f6f938cd65f53c932fe1860d0204cTed Kremenek S->Destroy(Context); 6185a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner } 621eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6339c28bbbf235533e9ae7d06fb9b13371dfcc542dChris Lattner // Create the aggregate string with the appropriate content and location 6439c28bbbf235533e9ae7d06fb9b13371dfcc542dChris Lattner // information. 6539c28bbbf235533e9ae7d06fb9b13371dfcc542dChris Lattner S = StringLiteral::Create(Context, &StrBuf[0], StrBuf.size(), false, 662085fd6cd22ec5c268175251db10d7c60caf7aaaChris Lattner Context.getPointerType(Context.CharTy), 6739c28bbbf235533e9ae7d06fb9b13371dfcc542dChris Lattner &StrLocs[0], StrLocs.size()); 6885a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner } 691eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 70690398188ea5b428f06aa13c7d4ce6eb741ad4f9Chris Lattner // Verify that this composite string is acceptable for ObjC strings. 71690398188ea5b428f06aa13c7d4ce6eb741ad4f9Chris Lattner if (CheckObjCString(S)) 7285a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner return true; 73a0af1fe67da29343cd182c51cd48d91b740ecef2Chris Lattner 74a0af1fe67da29343cd182c51cd48d91b740ecef2Chris Lattner // Initialize the constant string interface lazily. This assumes 75d9fd7647e286723d100db4cfeab31ec022eec629Steve Naroff // the NSString interface is seen in this translation unit. Note: We 76d9fd7647e286723d100db4cfeab31ec022eec629Steve Naroff // don't use NSConstantString, since the runtime team considers this 77d9fd7647e286723d100db4cfeab31ec022eec629Steve Naroff // interface private (even though it appears in the header files). 78a0af1fe67da29343cd182c51cd48d91b740ecef2Chris Lattner QualType Ty = Context.getObjCConstantStringInterface(); 79a0af1fe67da29343cd182c51cd48d91b740ecef2Chris Lattner if (!Ty.isNull()) { 8014108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff Ty = Context.getObjCObjectPointerType(Ty); 818a4377697161c5087e27cc40d6e0682f0cd1fa20Fariborz Jahanian } else if (getLangOptions().NoConstantCFStrings) { 828a4377697161c5087e27cc40d6e0682f0cd1fa20Fariborz Jahanian IdentifierInfo *NSIdent = &Context.Idents.get("NSConstantString"); 838a4377697161c5087e27cc40d6e0682f0cd1fa20Fariborz Jahanian NamedDecl *IF = LookupSingleName(TUScope, NSIdent, AtLocs[0], 848a4377697161c5087e27cc40d6e0682f0cd1fa20Fariborz Jahanian LookupOrdinaryName); 858a4377697161c5087e27cc40d6e0682f0cd1fa20Fariborz Jahanian if (ObjCInterfaceDecl *StrIF = dyn_cast_or_null<ObjCInterfaceDecl>(IF)) { 868a4377697161c5087e27cc40d6e0682f0cd1fa20Fariborz Jahanian Context.setObjCConstantStringInterface(StrIF); 878a4377697161c5087e27cc40d6e0682f0cd1fa20Fariborz Jahanian Ty = Context.getObjCConstantStringInterface(); 888a4377697161c5087e27cc40d6e0682f0cd1fa20Fariborz Jahanian Ty = Context.getObjCObjectPointerType(Ty); 898a4377697161c5087e27cc40d6e0682f0cd1fa20Fariborz Jahanian } else { 908a4377697161c5087e27cc40d6e0682f0cd1fa20Fariborz Jahanian // If there is no NSConstantString interface defined then treat this 918a4377697161c5087e27cc40d6e0682f0cd1fa20Fariborz Jahanian // as error and recover from it. 928a4377697161c5087e27cc40d6e0682f0cd1fa20Fariborz Jahanian Diag(S->getLocStart(), diag::err_no_nsconstant_string_class) << NSIdent 938a4377697161c5087e27cc40d6e0682f0cd1fa20Fariborz Jahanian << S->getSourceRange(); 948a4377697161c5087e27cc40d6e0682f0cd1fa20Fariborz Jahanian Ty = Context.getObjCIdType(); 958a4377697161c5087e27cc40d6e0682f0cd1fa20Fariborz Jahanian } 9613fd7e5111032f54b538dd66d035b0ccc1f82467Chris Lattner } else { 97d9fd7647e286723d100db4cfeab31ec022eec629Steve Naroff IdentifierInfo *NSIdent = &Context.Idents.get("NSString"); 98c83c6874e3bf1432d3df5e8d3530f8561ff5441fDouglas Gregor NamedDecl *IF = LookupSingleName(TUScope, NSIdent, AtLocs[0], 99c83c6874e3bf1432d3df5e8d3530f8561ff5441fDouglas Gregor LookupOrdinaryName); 100a0af1fe67da29343cd182c51cd48d91b740ecef2Chris Lattner if (ObjCInterfaceDecl *StrIF = dyn_cast_or_null<ObjCInterfaceDecl>(IF)) { 101a0af1fe67da29343cd182c51cd48d91b740ecef2Chris Lattner Context.setObjCConstantStringInterface(StrIF); 102a0af1fe67da29343cd182c51cd48d91b740ecef2Chris Lattner Ty = Context.getObjCConstantStringInterface(); 10314108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff Ty = Context.getObjCObjectPointerType(Ty); 104a0af1fe67da29343cd182c51cd48d91b740ecef2Chris Lattner } else { 105d9fd7647e286723d100db4cfeab31ec022eec629Steve Naroff // If there is no NSString interface defined then treat constant 106a0af1fe67da29343cd182c51cd48d91b740ecef2Chris Lattner // strings as untyped objects and let the runtime figure it out later. 107a0af1fe67da29343cd182c51cd48d91b740ecef2Chris Lattner Ty = Context.getObjCIdType(); 108a0af1fe67da29343cd182c51cd48d91b740ecef2Chris Lattner } 10913fd7e5111032f54b538dd66d035b0ccc1f82467Chris Lattner } 1101eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 111f4b136fb40aeedeaaa6ce7cdff22f375eb76c47bChris Lattner return new (Context) ObjCStringLiteral(S, Ty, AtLocs[0]); 11285a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner} 11385a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner 1141eb4433ac451dc16f4133a88af2d002ac26c58efMike StumpExpr *Sema::BuildObjCEncodeExpression(SourceLocation AtLoc, 11581d3466d037dc5844234c7a93dab21a6ad986e7dDouglas Gregor TypeSourceInfo *EncodedTypeInfo, 116fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson SourceLocation RParenLoc) { 11781d3466d037dc5844234c7a93dab21a6ad986e7dDouglas Gregor QualType EncodedType = EncodedTypeInfo->getType(); 118fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson QualType StrTy; 1191eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (EncodedType->isDependentType()) 120fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson StrTy = Context.DependentTy; 121fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson else { 122fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson std::string Str; 123fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson Context.getObjCEncodingForType(EncodedType, Str); 124fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson 125fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson // The type of @encode is the same as the type of the corresponding string, 126fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson // which is an array type. 127fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson StrTy = Context.CharTy; 128fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson // A C++ string literal has a const-qualified element type (C++ 2.13.4p1). 1294b7a834e0fecddd9eaf1f4567867c718e4eebf50John McCall if (getLangOptions().CPlusPlus || getLangOptions().ConstStrings) 130fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson StrTy.addConst(); 131fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson StrTy = Context.getConstantArrayType(StrTy, llvm::APInt(32, Str.size()+1), 132fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson ArrayType::Normal, 0); 133fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson } 1341eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 13581d3466d037dc5844234c7a93dab21a6ad986e7dDouglas Gregor return new (Context) ObjCEncodeExpr(StrTy, EncodedTypeInfo, AtLoc, RParenLoc); 136fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson} 137fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson 13885a932e26f3c3faae6bad639a6d32e92794dfda9Chris LattnerSema::ExprResult Sema::ParseObjCEncodeExpression(SourceLocation AtLoc, 13985a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner SourceLocation EncodeLoc, 14085a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner SourceLocation LParenLoc, 141a0af1fe67da29343cd182c51cd48d91b740ecef2Chris Lattner TypeTy *ty, 14285a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner SourceLocation RParenLoc) { 143e8661906d49ef6c9694a9cc845ca62a85dbc016dArgyrios Kyrtzidis // FIXME: Preserve type source info ? 14481d3466d037dc5844234c7a93dab21a6ad986e7dDouglas Gregor TypeSourceInfo *TInfo; 14581d3466d037dc5844234c7a93dab21a6ad986e7dDouglas Gregor QualType EncodedType = GetTypeFromParser(ty, &TInfo); 14681d3466d037dc5844234c7a93dab21a6ad986e7dDouglas Gregor if (!TInfo) 14781d3466d037dc5844234c7a93dab21a6ad986e7dDouglas Gregor TInfo = Context.getTrivialTypeSourceInfo(EncodedType, 14881d3466d037dc5844234c7a93dab21a6ad986e7dDouglas Gregor PP.getLocForEndOfToken(LParenLoc)); 14985a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner 15081d3466d037dc5844234c7a93dab21a6ad986e7dDouglas Gregor return BuildObjCEncodeExpression(AtLoc, TInfo, RParenLoc); 15185a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner} 15285a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner 15385a932e26f3c3faae6bad639a6d32e92794dfda9Chris LattnerSema::ExprResult Sema::ParseObjCSelectorExpression(Selector Sel, 15485a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner SourceLocation AtLoc, 15585a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner SourceLocation SelLoc, 15685a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner SourceLocation LParenLoc, 15785a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner SourceLocation RParenLoc) { 1581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump ObjCMethodDecl *Method = LookupInstanceMethodInGlobalPool(Sel, 159835ed7f15bd8a89226fd7976d96be19995f1c1c8Fariborz Jahanian SourceRange(LParenLoc, RParenLoc), false); 1607ff22ded2221f442b1f8ff78172938d04ec8c926Fariborz Jahanian if (!Method) 1617ff22ded2221f442b1f8ff78172938d04ec8c926Fariborz Jahanian Method = LookupFactoryMethodInGlobalPool(Sel, 1627ff22ded2221f442b1f8ff78172938d04ec8c926Fariborz Jahanian SourceRange(LParenLoc, RParenLoc)); 1637ff22ded2221f442b1f8ff78172938d04ec8c926Fariborz Jahanian if (!Method) 1647ff22ded2221f442b1f8ff78172938d04ec8c926Fariborz Jahanian Diag(SelLoc, diag::warn_undeclared_selector) << Sel; 1657ff22ded2221f442b1f8ff78172938d04ec8c926Fariborz Jahanian 166a0af1fe67da29343cd182c51cd48d91b740ecef2Chris Lattner QualType Ty = Context.getObjCSelType(); 1676d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbar return new (Context) ObjCSelectorExpr(Ty, Sel, AtLoc, RParenLoc); 16885a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner} 16985a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner 17085a932e26f3c3faae6bad639a6d32e92794dfda9Chris LattnerSema::ExprResult Sema::ParseObjCProtocolExpression(IdentifierInfo *ProtocolId, 17185a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner SourceLocation AtLoc, 17285a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner SourceLocation ProtoLoc, 17385a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner SourceLocation LParenLoc, 17485a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner SourceLocation RParenLoc) { 175c83c6874e3bf1432d3df5e8d3530f8561ff5441fDouglas Gregor ObjCProtocolDecl* PDecl = LookupProtocol(ProtocolId, ProtoLoc); 17685a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner if (!PDecl) { 1773c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner Diag(ProtoLoc, diag::err_undeclared_protocol) << ProtocolId; 17885a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner return true; 17985a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner } 1801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 181a0af1fe67da29343cd182c51cd48d91b740ecef2Chris Lattner QualType Ty = Context.getObjCProtoType(); 182a0af1fe67da29343cd182c51cd48d91b740ecef2Chris Lattner if (Ty.isNull()) 18385a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner return true; 18414108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff Ty = Context.getObjCObjectPointerType(Ty); 185a0af1fe67da29343cd182c51cd48d91b740ecef2Chris Lattner return new (Context) ObjCProtocolExpr(Ty, PDecl, AtLoc, RParenLoc); 18685a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner} 18785a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner 1881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumpbool Sema::CheckMessageArgumentTypes(Expr **Args, unsigned NumArgs, 1891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Selector Sel, ObjCMethodDecl *Method, 190077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner bool isClassMessage, 191637cebb67c59765e1412c589550c8c9ba001baebDaniel Dunbar SourceLocation lbrac, SourceLocation rbrac, 1921eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump QualType &ReturnType) { 193637cebb67c59765e1412c589550c8c9ba001baebDaniel Dunbar if (!Method) { 1946660c8a4cc2115929d92be83bbc54c307002a321Daniel Dunbar // Apply default argument promotion as for (C99 6.5.2.2p6). 19592e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor for (unsigned i = 0; i != NumArgs; i++) { 19692e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor if (Args[i]->isTypeDependent()) 19792e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor continue; 19892e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor 1996660c8a4cc2115929d92be83bbc54c307002a321Daniel Dunbar DefaultArgumentPromotion(Args[i]); 20092e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor } 2016660c8a4cc2115929d92be83bbc54c307002a321Daniel Dunbar 202077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner unsigned DiagID = isClassMessage ? diag::warn_class_method_not_found : 203077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner diag::warn_inst_method_not_found; 204077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner Diag(lbrac, DiagID) 205077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner << Sel << isClassMessage << SourceRange(lbrac, rbrac); 206637cebb67c59765e1412c589550c8c9ba001baebDaniel Dunbar ReturnType = Context.getObjCIdType(); 207637cebb67c59765e1412c589550c8c9ba001baebDaniel Dunbar return false; 208637cebb67c59765e1412c589550c8c9ba001baebDaniel Dunbar } 2091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2102725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor ReturnType = Method->getResultType().getNonReferenceType(); 2111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 21291e19b2029447e75d2c7730ff888cc396874685bDaniel Dunbar unsigned NumNamedArgs = Sel.getNumArgs(); 2134f4fd92c6c64ecbc65507f63ddd09211f732622cFariborz Jahanian // Method might have more arguments than selector indicates. This is due 2144f4fd92c6c64ecbc65507f63ddd09211f732622cFariborz Jahanian // to addition of c-style arguments in method. 2154f4fd92c6c64ecbc65507f63ddd09211f732622cFariborz Jahanian if (Method->param_size() > Sel.getNumArgs()) 2164f4fd92c6c64ecbc65507f63ddd09211f732622cFariborz Jahanian NumNamedArgs = Method->param_size(); 2174f4fd92c6c64ecbc65507f63ddd09211f732622cFariborz Jahanian // FIXME. This need be cleaned up. 2184f4fd92c6c64ecbc65507f63ddd09211f732622cFariborz Jahanian if (NumArgs < NumNamedArgs) { 219d77b9a29651d748f0e30a8dad8969635fc04f725Eric Christopher Diag(lbrac, diag::err_typecheck_call_too_few_args) << 2 220d77b9a29651d748f0e30a8dad8969635fc04f725Eric Christopher << NumNamedArgs << NumArgs; 2214f4fd92c6c64ecbc65507f63ddd09211f732622cFariborz Jahanian return false; 2224f4fd92c6c64ecbc65507f63ddd09211f732622cFariborz Jahanian } 22391e19b2029447e75d2c7730ff888cc396874685bDaniel Dunbar 224312531a8cd69c562d5687bd69fd334be99d87320Chris Lattner bool IsError = false; 22591e19b2029447e75d2c7730ff888cc396874685bDaniel Dunbar for (unsigned i = 0; i < NumNamedArgs; i++) { 22692e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor // We can't do any type-checking on a type-dependent argument. 22792e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor if (Args[i]->isTypeDependent()) 22892e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor continue; 22992e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor 23085a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner Expr *argExpr = Args[i]; 23192e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor 232688fc9b9b4323a294f5bf4f8a83f7c365edec573Douglas Gregor ParmVarDecl *Param = Method->param_begin()[i]; 23385a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner assert(argExpr && "CheckMessageArgumentTypes(): missing expression"); 2341eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 235688fc9b9b4323a294f5bf4f8a83f7c365edec573Douglas Gregor if (RequireCompleteType(argExpr->getSourceRange().getBegin(), 236688fc9b9b4323a294f5bf4f8a83f7c365edec573Douglas Gregor Param->getType(), 237688fc9b9b4323a294f5bf4f8a83f7c365edec573Douglas Gregor PDiag(diag::err_call_incomplete_argument) 238688fc9b9b4323a294f5bf4f8a83f7c365edec573Douglas Gregor << argExpr->getSourceRange())) 239688fc9b9b4323a294f5bf4f8a83f7c365edec573Douglas Gregor return true; 240688fc9b9b4323a294f5bf4f8a83f7c365edec573Douglas Gregor 241688fc9b9b4323a294f5bf4f8a83f7c365edec573Douglas Gregor InitializedEntity Entity = InitializedEntity::InitializeParameter(Param); 242688fc9b9b4323a294f5bf4f8a83f7c365edec573Douglas Gregor OwningExprResult ArgE = PerformCopyInitialization(Entity, 243688fc9b9b4323a294f5bf4f8a83f7c365edec573Douglas Gregor SourceLocation(), 244688fc9b9b4323a294f5bf4f8a83f7c365edec573Douglas Gregor Owned(argExpr->Retain())); 245688fc9b9b4323a294f5bf4f8a83f7c365edec573Douglas Gregor if (ArgE.isInvalid()) 246688fc9b9b4323a294f5bf4f8a83f7c365edec573Douglas Gregor IsError = true; 247688fc9b9b4323a294f5bf4f8a83f7c365edec573Douglas Gregor else 248688fc9b9b4323a294f5bf4f8a83f7c365edec573Douglas Gregor Args[i] = ArgE.takeAs<Expr>(); 24985a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner } 25091e19b2029447e75d2c7730ff888cc396874685bDaniel Dunbar 25191e19b2029447e75d2c7730ff888cc396874685bDaniel Dunbar // Promote additional arguments to variadic methods. 25291e19b2029447e75d2c7730ff888cc396874685bDaniel Dunbar if (Method->isVariadic()) { 25392e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor for (unsigned i = NumNamedArgs; i < NumArgs; ++i) { 25492e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor if (Args[i]->isTypeDependent()) 25592e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor continue; 25692e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor 257312531a8cd69c562d5687bd69fd334be99d87320Chris Lattner IsError |= DefaultVariadicArgumentPromotion(Args[i], VariadicMethod); 25892e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor } 25991e19b2029447e75d2c7730ff888cc396874685bDaniel Dunbar } else { 26091e19b2029447e75d2c7730ff888cc396874685bDaniel Dunbar // Check for extra arguments to non-variadic methods. 26191e19b2029447e75d2c7730ff888cc396874685bDaniel Dunbar if (NumArgs != NumNamedArgs) { 2621eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Diag(Args[NumNamedArgs]->getLocStart(), 263fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner diag::err_typecheck_call_too_many_args) 264ccfa9639f8d09733bcf1c2572c5bd3daba5bd632Eric Christopher << 2 /*method*/ << NumNamedArgs << NumArgs 265ccfa9639f8d09733bcf1c2572c5bd3daba5bd632Eric Christopher << Method->getSourceRange() 266fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner << SourceRange(Args[NumNamedArgs]->getLocStart(), 267fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner Args[NumArgs-1]->getLocEnd()); 26891e19b2029447e75d2c7730ff888cc396874685bDaniel Dunbar } 26991e19b2029447e75d2c7730ff888cc396874685bDaniel Dunbar } 27091e19b2029447e75d2c7730ff888cc396874685bDaniel Dunbar 2712725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor DiagnoseSentinelCalls(Method, lbrac, Args, NumArgs); 272312531a8cd69c562d5687bd69fd334be99d87320Chris Lattner return IsError; 27385a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner} 27485a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner 2756b9dfd4257b85c388a9e3cd345cf28acb7351006Steve Naroffbool Sema::isSelfExpr(Expr *RExpr) { 2766b9dfd4257b85c388a9e3cd345cf28acb7351006Steve Naroff if (DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(RExpr)) 2776b9dfd4257b85c388a9e3cd345cf28acb7351006Steve Naroff if (DRE->getDecl()->getIdentifier() == &Context.Idents.get("self")) 2786b9dfd4257b85c388a9e3cd345cf28acb7351006Steve Naroff return true; 2796b9dfd4257b85c388a9e3cd345cf28acb7351006Steve Naroff return false; 2806b9dfd4257b85c388a9e3cd345cf28acb7351006Steve Naroff} 2816b9dfd4257b85c388a9e3cd345cf28acb7351006Steve Naroff 282f1afaf6fe2d94ab265299853f288b676694f7554Steve Naroff// Helper method for ActOnClassMethod/ActOnInstanceMethod. 283f1afaf6fe2d94ab265299853f288b676694f7554Steve Naroff// Will search "local" class/category implementations for a method decl. 284175ba1e8180083927aabd7cc8137baa16be75646Fariborz Jahanian// If failed, then we search in class's root for an instance method. 285f1afaf6fe2d94ab265299853f288b676694f7554Steve Naroff// Returns 0 if no method is found. 2865609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve NaroffObjCMethodDecl *Sema::LookupPrivateClassMethod(Selector Sel, 287f1afaf6fe2d94ab265299853f288b676694f7554Steve Naroff ObjCInterfaceDecl *ClassDecl) { 288f1afaf6fe2d94ab265299853f288b676694f7554Steve Naroff ObjCMethodDecl *Method = 0; 2895609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff // lookup in class and all superclasses 2905609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff while (ClassDecl && !Method) { 29187018775ed689d0a67357cf767747166044b3a27Argyrios Kyrtzidis if (ObjCImplementationDecl *ImpDecl = ClassDecl->getImplementation()) 29217945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis Method = ImpDecl->getClassMethod(Sel); 2931eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2945609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff // Look through local category implementations associated with the class. 2951cb35dd4840d21cec58648361180d5688446a9caArgyrios Kyrtzidis if (!Method) 2961cb35dd4840d21cec58648361180d5688446a9caArgyrios Kyrtzidis Method = ClassDecl->getCategoryClassMethod(Sel); 2971eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2985609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff // Before we give up, check if the selector is an instance method. 2995609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff // But only in the root. This matches gcc's behaviour and what the 3005609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff // runtime expects. 3015609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff if (!Method && !ClassDecl->getSuperClass()) { 30217945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis Method = ClassDecl->lookupInstanceMethod(Sel); 3031eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Look through local category implementations associated 3045609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff // with the root class. 3051eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (!Method) 3065609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff Method = LookupPrivateInstanceMethod(Sel, ClassDecl); 307f1afaf6fe2d94ab265299853f288b676694f7554Steve Naroff } 3081eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3095609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff ClassDecl = ClassDecl->getSuperClass(); 310f1afaf6fe2d94ab265299853f288b676694f7554Steve Naroff } 3115609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff return Method; 3125609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff} 3135609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff 3145609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve NaroffObjCMethodDecl *Sema::LookupPrivateInstanceMethod(Selector Sel, 3155609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff ObjCInterfaceDecl *ClassDecl) { 3165609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff ObjCMethodDecl *Method = 0; 3175609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff while (ClassDecl && !Method) { 3185609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff // If we have implementations in scope, check "private" methods. 31987018775ed689d0a67357cf767747166044b3a27Argyrios Kyrtzidis if (ObjCImplementationDecl *ImpDecl = ClassDecl->getImplementation()) 32017945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis Method = ImpDecl->getInstanceMethod(Sel); 3211eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3225609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff // Look through local category implementations associated with the class. 3231cb35dd4840d21cec58648361180d5688446a9caArgyrios Kyrtzidis if (!Method) 3241cb35dd4840d21cec58648361180d5688446a9caArgyrios Kyrtzidis Method = ClassDecl->getCategoryInstanceMethod(Sel); 3255609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff ClassDecl = ClassDecl->getSuperClass(); 326175ba1e8180083927aabd7cc8137baa16be75646Fariborz Jahanian } 327f1afaf6fe2d94ab265299853f288b676694f7554Steve Naroff return Method; 328f1afaf6fe2d94ab265299853f288b676694f7554Steve Naroff} 329f1afaf6fe2d94ab265299853f288b676694f7554Steve Naroff 3307f81652f97a69ae8b514893a69c0245253687e55Chris Lattner/// HandleExprPropertyRefExpr - Handle foo.bar where foo is a pointer to an 3317f81652f97a69ae8b514893a69c0245253687e55Chris Lattner/// objective C interface. This is a property reference expression. 3327f81652f97a69ae8b514893a69c0245253687e55Chris LattnerAction::OwningExprResult Sema:: 3337f81652f97a69ae8b514893a69c0245253687e55Chris LattnerHandleExprPropertyRefExpr(const ObjCObjectPointerType *OPT, 334b9d4fc1f54924a7b242fb763192a40c19fa6103dChris Lattner Expr *BaseExpr, DeclarationName MemberName, 335b9d4fc1f54924a7b242fb763192a40c19fa6103dChris Lattner SourceLocation MemberLoc) { 3367f81652f97a69ae8b514893a69c0245253687e55Chris Lattner const ObjCInterfaceType *IFaceT = OPT->getInterfaceType(); 3377f81652f97a69ae8b514893a69c0245253687e55Chris Lattner ObjCInterfaceDecl *IFace = IFaceT->getDecl(); 3387f81652f97a69ae8b514893a69c0245253687e55Chris Lattner IdentifierInfo *Member = MemberName.getAsIdentifierInfo(); 3397f81652f97a69ae8b514893a69c0245253687e55Chris Lattner 3407f81652f97a69ae8b514893a69c0245253687e55Chris Lattner // Search for a declared property first. 3417f81652f97a69ae8b514893a69c0245253687e55Chris Lattner if (ObjCPropertyDecl *PD = IFace->FindPropertyDeclaration(Member)) { 3427f81652f97a69ae8b514893a69c0245253687e55Chris Lattner // Check whether we can reference this property. 3437f81652f97a69ae8b514893a69c0245253687e55Chris Lattner if (DiagnoseUseOfDecl(PD, MemberLoc)) 3447f81652f97a69ae8b514893a69c0245253687e55Chris Lattner return ExprError(); 3457f81652f97a69ae8b514893a69c0245253687e55Chris Lattner QualType ResTy = PD->getType(); 3467f81652f97a69ae8b514893a69c0245253687e55Chris Lattner Selector Sel = PP.getSelectorTable().getNullarySelector(Member); 3477f81652f97a69ae8b514893a69c0245253687e55Chris Lattner ObjCMethodDecl *Getter = IFace->lookupInstanceMethod(Sel); 3487f81652f97a69ae8b514893a69c0245253687e55Chris Lattner if (DiagnosePropertyAccessorMismatch(PD, Getter, MemberLoc)) 3497f81652f97a69ae8b514893a69c0245253687e55Chris Lattner ResTy = Getter->getResultType(); 3507f81652f97a69ae8b514893a69c0245253687e55Chris Lattner return Owned(new (Context) ObjCPropertyRefExpr(PD, ResTy, 3517f81652f97a69ae8b514893a69c0245253687e55Chris Lattner MemberLoc, BaseExpr)); 3527f81652f97a69ae8b514893a69c0245253687e55Chris Lattner } 3537f81652f97a69ae8b514893a69c0245253687e55Chris Lattner // Check protocols on qualified interfaces. 3547f81652f97a69ae8b514893a69c0245253687e55Chris Lattner for (ObjCObjectPointerType::qual_iterator I = OPT->qual_begin(), 3557f81652f97a69ae8b514893a69c0245253687e55Chris Lattner E = OPT->qual_end(); I != E; ++I) 3567f81652f97a69ae8b514893a69c0245253687e55Chris Lattner if (ObjCPropertyDecl *PD = (*I)->FindPropertyDeclaration(Member)) { 3577f81652f97a69ae8b514893a69c0245253687e55Chris Lattner // Check whether we can reference this property. 3587f81652f97a69ae8b514893a69c0245253687e55Chris Lattner if (DiagnoseUseOfDecl(PD, MemberLoc)) 3597f81652f97a69ae8b514893a69c0245253687e55Chris Lattner return ExprError(); 3607f81652f97a69ae8b514893a69c0245253687e55Chris Lattner 3617f81652f97a69ae8b514893a69c0245253687e55Chris Lattner return Owned(new (Context) ObjCPropertyRefExpr(PD, PD->getType(), 3627f81652f97a69ae8b514893a69c0245253687e55Chris Lattner MemberLoc, BaseExpr)); 3637f81652f97a69ae8b514893a69c0245253687e55Chris Lattner } 3647f81652f97a69ae8b514893a69c0245253687e55Chris Lattner // If that failed, look for an "implicit" property by seeing if the nullary 3657f81652f97a69ae8b514893a69c0245253687e55Chris Lattner // selector is implemented. 3667f81652f97a69ae8b514893a69c0245253687e55Chris Lattner 3677f81652f97a69ae8b514893a69c0245253687e55Chris Lattner // FIXME: The logic for looking up nullary and unary selectors should be 3687f81652f97a69ae8b514893a69c0245253687e55Chris Lattner // shared with the code in ActOnInstanceMessage. 3697f81652f97a69ae8b514893a69c0245253687e55Chris Lattner 3707f81652f97a69ae8b514893a69c0245253687e55Chris Lattner Selector Sel = PP.getSelectorTable().getNullarySelector(Member); 3717f81652f97a69ae8b514893a69c0245253687e55Chris Lattner ObjCMethodDecl *Getter = IFace->lookupInstanceMethod(Sel); 3727f81652f97a69ae8b514893a69c0245253687e55Chris Lattner 3737f81652f97a69ae8b514893a69c0245253687e55Chris Lattner // If this reference is in an @implementation, check for 'private' methods. 3747f81652f97a69ae8b514893a69c0245253687e55Chris Lattner if (!Getter) 3757f81652f97a69ae8b514893a69c0245253687e55Chris Lattner Getter = IFace->lookupPrivateInstanceMethod(Sel); 3767f81652f97a69ae8b514893a69c0245253687e55Chris Lattner 3777f81652f97a69ae8b514893a69c0245253687e55Chris Lattner // Look through local category implementations associated with the class. 3787f81652f97a69ae8b514893a69c0245253687e55Chris Lattner if (!Getter) 3797f81652f97a69ae8b514893a69c0245253687e55Chris Lattner Getter = IFace->getCategoryInstanceMethod(Sel); 3807f81652f97a69ae8b514893a69c0245253687e55Chris Lattner if (Getter) { 3817f81652f97a69ae8b514893a69c0245253687e55Chris Lattner // Check if we can reference this property. 3827f81652f97a69ae8b514893a69c0245253687e55Chris Lattner if (DiagnoseUseOfDecl(Getter, MemberLoc)) 3837f81652f97a69ae8b514893a69c0245253687e55Chris Lattner return ExprError(); 3847f81652f97a69ae8b514893a69c0245253687e55Chris Lattner } 3857f81652f97a69ae8b514893a69c0245253687e55Chris Lattner // If we found a getter then this may be a valid dot-reference, we 3867f81652f97a69ae8b514893a69c0245253687e55Chris Lattner // will look for the matching setter, in case it is needed. 3877f81652f97a69ae8b514893a69c0245253687e55Chris Lattner Selector SetterSel = 3887f81652f97a69ae8b514893a69c0245253687e55Chris Lattner SelectorTable::constructSetterName(PP.getIdentifierTable(), 3897f81652f97a69ae8b514893a69c0245253687e55Chris Lattner PP.getSelectorTable(), Member); 3907f81652f97a69ae8b514893a69c0245253687e55Chris Lattner ObjCMethodDecl *Setter = IFace->lookupInstanceMethod(SetterSel); 3917f81652f97a69ae8b514893a69c0245253687e55Chris Lattner if (!Setter) { 3927f81652f97a69ae8b514893a69c0245253687e55Chris Lattner // If this reference is in an @implementation, also check for 'private' 3937f81652f97a69ae8b514893a69c0245253687e55Chris Lattner // methods. 3947f81652f97a69ae8b514893a69c0245253687e55Chris Lattner Setter = IFace->lookupPrivateInstanceMethod(SetterSel); 3957f81652f97a69ae8b514893a69c0245253687e55Chris Lattner } 3967f81652f97a69ae8b514893a69c0245253687e55Chris Lattner // Look through local category implementations associated with the class. 3977f81652f97a69ae8b514893a69c0245253687e55Chris Lattner if (!Setter) 3987f81652f97a69ae8b514893a69c0245253687e55Chris Lattner Setter = IFace->getCategoryInstanceMethod(SetterSel); 3997f81652f97a69ae8b514893a69c0245253687e55Chris Lattner 4007f81652f97a69ae8b514893a69c0245253687e55Chris Lattner if (Setter && DiagnoseUseOfDecl(Setter, MemberLoc)) 4017f81652f97a69ae8b514893a69c0245253687e55Chris Lattner return ExprError(); 4027f81652f97a69ae8b514893a69c0245253687e55Chris Lattner 4037f81652f97a69ae8b514893a69c0245253687e55Chris Lattner if (Getter) { 4047f81652f97a69ae8b514893a69c0245253687e55Chris Lattner QualType PType; 4057f81652f97a69ae8b514893a69c0245253687e55Chris Lattner PType = Getter->getResultType(); 4067f81652f97a69ae8b514893a69c0245253687e55Chris Lattner return Owned(new (Context) ObjCImplicitSetterGetterRefExpr(Getter, PType, 4077f81652f97a69ae8b514893a69c0245253687e55Chris Lattner Setter, MemberLoc, BaseExpr)); 4087f81652f97a69ae8b514893a69c0245253687e55Chris Lattner } 4097f81652f97a69ae8b514893a69c0245253687e55Chris Lattner 4107f81652f97a69ae8b514893a69c0245253687e55Chris Lattner // Attempt to correct for typos in property names. 4117f81652f97a69ae8b514893a69c0245253687e55Chris Lattner LookupResult Res(*this, MemberName, MemberLoc, LookupOrdinaryName); 412aaf87162c5fbfbf320072da3a8e83392e1bbf041Douglas Gregor if (CorrectTypo(Res, 0, 0, IFace, false, CTC_NoKeywords, OPT) && 4137f81652f97a69ae8b514893a69c0245253687e55Chris Lattner Res.getAsSingle<ObjCPropertyDecl>()) { 414b9d4fc1f54924a7b242fb763192a40c19fa6103dChris Lattner DeclarationName TypoResult = Res.getLookupName(); 4157f81652f97a69ae8b514893a69c0245253687e55Chris Lattner Diag(MemberLoc, diag::err_property_not_found_suggest) 416b9d4fc1f54924a7b242fb763192a40c19fa6103dChris Lattner << MemberName << QualType(OPT, 0) << TypoResult 417b9d4fc1f54924a7b242fb763192a40c19fa6103dChris Lattner << FixItHint::CreateReplacement(MemberLoc, TypoResult.getAsString()); 4187f81652f97a69ae8b514893a69c0245253687e55Chris Lattner ObjCPropertyDecl *Property = Res.getAsSingle<ObjCPropertyDecl>(); 4197f81652f97a69ae8b514893a69c0245253687e55Chris Lattner Diag(Property->getLocation(), diag::note_previous_decl) 4207f81652f97a69ae8b514893a69c0245253687e55Chris Lattner << Property->getDeclName(); 421b9d4fc1f54924a7b242fb763192a40c19fa6103dChris Lattner return HandleExprPropertyRefExpr(OPT, BaseExpr, TypoResult, MemberLoc); 4227f81652f97a69ae8b514893a69c0245253687e55Chris Lattner } 423b9d4fc1f54924a7b242fb763192a40c19fa6103dChris Lattner 4247f81652f97a69ae8b514893a69c0245253687e55Chris Lattner Diag(MemberLoc, diag::err_property_not_found) 4257f81652f97a69ae8b514893a69c0245253687e55Chris Lattner << MemberName << QualType(OPT, 0); 4267f81652f97a69ae8b514893a69c0245253687e55Chris Lattner if (Setter && !Getter) 4277f81652f97a69ae8b514893a69c0245253687e55Chris Lattner Diag(Setter->getLocation(), diag::note_getter_unavailable) 4287f81652f97a69ae8b514893a69c0245253687e55Chris Lattner << MemberName << BaseExpr->getSourceRange(); 4297f81652f97a69ae8b514893a69c0245253687e55Chris Lattner return ExprError(); 4307f81652f97a69ae8b514893a69c0245253687e55Chris Lattner} 4317f81652f97a69ae8b514893a69c0245253687e55Chris Lattner 4327f81652f97a69ae8b514893a69c0245253687e55Chris Lattner 4337f81652f97a69ae8b514893a69c0245253687e55Chris Lattner 434eb483eb3ee80300f15d6d13573d82493c2194461Chris LattnerAction::OwningExprResult Sema:: 435eb483eb3ee80300f15d6d13573d82493c2194461Chris LattnerActOnClassPropertyRefExpr(IdentifierInfo &receiverName, 436eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner IdentifierInfo &propertyName, 437eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner SourceLocation receiverNameLoc, 438eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner SourceLocation propertyNameLoc) { 4391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 440f06cdae9c68dfc4191fbf6b9e5ea0fd748488d88Douglas Gregor IdentifierInfo *receiverNamePtr = &receiverName; 441c83c6874e3bf1432d3df5e8d3530f8561ff5441fDouglas Gregor ObjCInterfaceDecl *IFace = getObjCInterfaceDecl(receiverNamePtr, 442c83c6874e3bf1432d3df5e8d3530f8561ff5441fDouglas Gregor receiverNameLoc); 443eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner if (IFace == 0) { 444eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner // If the "receiver" is 'super' in a method, handle it as an expression-like 445eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner // property reference. 446eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner if (ObjCMethodDecl *CurMethod = getCurMethodDecl()) 447eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner if (receiverNamePtr->isStr("super")) { 448eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner if (CurMethod->isInstanceMethod()) { 449eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner QualType T = 450eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner Context.getObjCInterfaceType(CurMethod->getClassInterface()); 451eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner T = Context.getObjCObjectPointerType(T); 452eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner Expr *SuperExpr = new (Context) ObjCSuperExpr(receiverNameLoc, T); 453eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner 454eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner return HandleExprPropertyRefExpr(T->getAsObjCInterfacePointerType(), 455eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner SuperExpr, &propertyName, 456eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner propertyNameLoc); 457eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner } 458eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner 459eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner // Otherwise, if this is a class method, try dispatching to our 460eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner // superclass. 461eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner IFace = CurMethod->getClassInterface()->getSuperClass(); 462eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner } 463eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner 464eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner if (IFace == 0) { 465eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner Diag(receiverNameLoc, diag::err_expected_ident_or_lparen); 466eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner return ExprError(); 467eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner } 4688149a5786def747af783a9e3c22714bb7ab42b9cFariborz Jahanian } 4691eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 470eb483eb3ee80300f15d6d13573d82493c2194461Chris Lattner // Search for a declared property first. 47161f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff Selector Sel = PP.getSelectorTable().getNullarySelector(&propertyName); 47217945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis ObjCMethodDecl *Getter = IFace->lookupClassMethod(Sel); 47361f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff 47461f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff // If this reference is in an @implementation, check for 'private' methods. 47561f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff if (!Getter) 47661f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff if (ObjCMethodDecl *CurMeth = getCurMethodDecl()) 47761f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff if (ObjCInterfaceDecl *ClassDecl = CurMeth->getClassInterface()) 47887018775ed689d0a67357cf767747166044b3a27Argyrios Kyrtzidis if (ObjCImplementationDecl *ImpDecl = ClassDecl->getImplementation()) 47917945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis Getter = ImpDecl->getClassMethod(Sel); 48061f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff 48161f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff if (Getter) { 48261f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff // FIXME: refactor/share with ActOnMemberReference(). 48361f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff // Check if we can reference this property. 48461f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff if (DiagnoseUseOfDecl(Getter, propertyNameLoc)) 48561f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff return ExprError(); 48661f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff } 4871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 48861f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff // Look for the matching setter, in case it is needed. 4891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Selector SetterSel = 4901eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SelectorTable::constructSetterName(PP.getIdentifierTable(), 491fdc92b7877535e6264fe43cfbdc8f01e9b224f81Steve Naroff PP.getSelectorTable(), &propertyName); 4921eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 49317945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis ObjCMethodDecl *Setter = IFace->lookupClassMethod(SetterSel); 49461f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff if (!Setter) { 49561f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff // If this reference is in an @implementation, also check for 'private' 49661f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff // methods. 49761f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff if (ObjCMethodDecl *CurMeth = getCurMethodDecl()) 49861f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff if (ObjCInterfaceDecl *ClassDecl = CurMeth->getClassInterface()) 49987018775ed689d0a67357cf767747166044b3a27Argyrios Kyrtzidis if (ObjCImplementationDecl *ImpDecl = ClassDecl->getImplementation()) 50017945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis Setter = ImpDecl->getClassMethod(SetterSel); 50161f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff } 50261f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff // Look through local category implementations associated with the class. 5031cb35dd4840d21cec58648361180d5688446a9caArgyrios Kyrtzidis if (!Setter) 5041cb35dd4840d21cec58648361180d5688446a9caArgyrios Kyrtzidis Setter = IFace->getCategoryClassMethod(SetterSel); 50561f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff 50661f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff if (Setter && DiagnoseUseOfDecl(Setter, propertyNameLoc)) 50761f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff return ExprError(); 50861f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff 50961f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff if (Getter || Setter) { 51061f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff QualType PType; 51161f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff 51261f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff if (Getter) 51361f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff PType = Getter->getResultType(); 51461f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff else { 51561f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff for (ObjCMethodDecl::param_iterator PI = Setter->param_begin(), 51661f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff E = Setter->param_end(); PI != E; ++PI) 51761f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff PType = (*PI)->getType(); 51861f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff } 51909105f52b1f28cbb1374c27c3c70f5517e2c465dFariborz Jahanian return Owned(new (Context) ObjCImplicitSetterGetterRefExpr( 5201eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Getter, PType, Setter, 52161f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff propertyNameLoc, IFace, receiverNameLoc)); 52261f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff } 52361f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff return ExprError(Diag(propertyNameLoc, diag::err_property_not_found) 52461f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff << &propertyName << Context.getObjCInterfaceType(IFace)); 52561f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff} 52661f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff 52747bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas GregorSema::ObjCMessageKind Sema::getObjCMessageKind(Scope *S, 5281569f95831a8c99e9f664137bf8f40e47ee3d90fDouglas Gregor IdentifierInfo *Name, 52947bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor SourceLocation NameLoc, 53047bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor bool IsSuper, 5311569f95831a8c99e9f664137bf8f40e47ee3d90fDouglas Gregor bool HasTrailingDot, 5321569f95831a8c99e9f664137bf8f40e47ee3d90fDouglas Gregor TypeTy *&ReceiverType) { 5331569f95831a8c99e9f664137bf8f40e47ee3d90fDouglas Gregor ReceiverType = 0; 5341569f95831a8c99e9f664137bf8f40e47ee3d90fDouglas Gregor 53547bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor // If the identifier is "super" and there is no trailing dot, we're 53647bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor // messaging super. 53747bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor if (IsSuper && !HasTrailingDot && S->isInObjcMethodScope()) 53847bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor return ObjCSuperMessage; 53947bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor 54047bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor LookupResult Result(*this, Name, NameLoc, LookupOrdinaryName); 54147bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor LookupName(Result, S); 54247bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor 54347bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor switch (Result.getResultKind()) { 54447bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor case LookupResult::NotFound: 545ed46442adea496dfb01dbbe53ace583d5614e79aDouglas Gregor // Normal name lookup didn't find anything. If we're in an 546ed46442adea496dfb01dbbe53ace583d5614e79aDouglas Gregor // Objective-C method, look for ivars. If we find one, we're done! 547ed46442adea496dfb01dbbe53ace583d5614e79aDouglas Gregor // FIXME: This is a hack. Ivar lookup should be part of normal lookup. 548ed46442adea496dfb01dbbe53ace583d5614e79aDouglas Gregor if (ObjCMethodDecl *Method = getCurMethodDecl()) { 549ed46442adea496dfb01dbbe53ace583d5614e79aDouglas Gregor ObjCInterfaceDecl *ClassDeclared; 550ed46442adea496dfb01dbbe53ace583d5614e79aDouglas Gregor if (Method->getClassInterface()->lookupInstanceVariable(Name, 551ed46442adea496dfb01dbbe53ace583d5614e79aDouglas Gregor ClassDeclared)) 552ed46442adea496dfb01dbbe53ace583d5614e79aDouglas Gregor return ObjCInstanceMessage; 553ed46442adea496dfb01dbbe53ace583d5614e79aDouglas Gregor } 554ed46442adea496dfb01dbbe53ace583d5614e79aDouglas Gregor 55547bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor // Break out; we'll perform typo correction below. 55647bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor break; 55747bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor 55847bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor case LookupResult::NotFoundInCurrentInstantiation: 55947bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor case LookupResult::FoundOverloaded: 56047bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor case LookupResult::FoundUnresolvedValue: 56147bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor case LookupResult::Ambiguous: 56247bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor Result.suppressDiagnostics(); 56347bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor return ObjCInstanceMessage; 56447bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor 56547bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor case LookupResult::Found: { 56647bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor // We found something. If it's a type, then we have a class 56747bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor // message. Otherwise, it's an instance message. 56847bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor NamedDecl *ND = Result.getFoundDecl(); 5691569f95831a8c99e9f664137bf8f40e47ee3d90fDouglas Gregor QualType T; 5701569f95831a8c99e9f664137bf8f40e47ee3d90fDouglas Gregor if (ObjCInterfaceDecl *Class = dyn_cast<ObjCInterfaceDecl>(ND)) 5711569f95831a8c99e9f664137bf8f40e47ee3d90fDouglas Gregor T = Context.getObjCInterfaceType(Class); 5721569f95831a8c99e9f664137bf8f40e47ee3d90fDouglas Gregor else if (TypeDecl *Type = dyn_cast<TypeDecl>(ND)) 5731569f95831a8c99e9f664137bf8f40e47ee3d90fDouglas Gregor T = Context.getTypeDeclType(Type); 5741569f95831a8c99e9f664137bf8f40e47ee3d90fDouglas Gregor else 5751569f95831a8c99e9f664137bf8f40e47ee3d90fDouglas Gregor return ObjCInstanceMessage; 5761569f95831a8c99e9f664137bf8f40e47ee3d90fDouglas Gregor 5771569f95831a8c99e9f664137bf8f40e47ee3d90fDouglas Gregor // We have a class message, and T is the type we're 5781569f95831a8c99e9f664137bf8f40e47ee3d90fDouglas Gregor // messaging. Build source-location information for it. 5791569f95831a8c99e9f664137bf8f40e47ee3d90fDouglas Gregor TypeSourceInfo *TSInfo = Context.getTrivialTypeSourceInfo(T, NameLoc); 5801569f95831a8c99e9f664137bf8f40e47ee3d90fDouglas Gregor ReceiverType = CreateLocInfoType(T, TSInfo).getAsOpaquePtr(); 5811569f95831a8c99e9f664137bf8f40e47ee3d90fDouglas Gregor return ObjCClassMessage; 58247bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor } 58347bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor } 58447bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor 585aaf87162c5fbfbf320072da3a8e83392e1bbf041Douglas Gregor // Determine our typo-correction context. 586aaf87162c5fbfbf320072da3a8e83392e1bbf041Douglas Gregor CorrectTypoContext CTC = CTC_Expression; 587aaf87162c5fbfbf320072da3a8e83392e1bbf041Douglas Gregor if (ObjCMethodDecl *Method = getCurMethodDecl()) 588aaf87162c5fbfbf320072da3a8e83392e1bbf041Douglas Gregor if (Method->getClassInterface() && 589aaf87162c5fbfbf320072da3a8e83392e1bbf041Douglas Gregor Method->getClassInterface()->getSuperClass()) 590aaf87162c5fbfbf320072da3a8e83392e1bbf041Douglas Gregor CTC = CTC_ObjCMessageReceiver; 591aaf87162c5fbfbf320072da3a8e83392e1bbf041Douglas Gregor 592aaf87162c5fbfbf320072da3a8e83392e1bbf041Douglas Gregor if (DeclarationName Corrected = CorrectTypo(Result, S, 0, 0, false, CTC)) { 593aaf87162c5fbfbf320072da3a8e83392e1bbf041Douglas Gregor if (Result.isSingleResult()) { 594aaf87162c5fbfbf320072da3a8e83392e1bbf041Douglas Gregor // If we found a declaration, correct when it refers to an Objective-C 595aaf87162c5fbfbf320072da3a8e83392e1bbf041Douglas Gregor // class. 596aaf87162c5fbfbf320072da3a8e83392e1bbf041Douglas Gregor NamedDecl *ND = Result.getFoundDecl(); 5971569f95831a8c99e9f664137bf8f40e47ee3d90fDouglas Gregor if (ObjCInterfaceDecl *Class = dyn_cast<ObjCInterfaceDecl>(ND)) { 598aaf87162c5fbfbf320072da3a8e83392e1bbf041Douglas Gregor Diag(NameLoc, diag::err_unknown_receiver_suggest) 599aaf87162c5fbfbf320072da3a8e83392e1bbf041Douglas Gregor << Name << Result.getLookupName() 600aaf87162c5fbfbf320072da3a8e83392e1bbf041Douglas Gregor << FixItHint::CreateReplacement(SourceRange(NameLoc), 601aaf87162c5fbfbf320072da3a8e83392e1bbf041Douglas Gregor ND->getNameAsString()); 602aaf87162c5fbfbf320072da3a8e83392e1bbf041Douglas Gregor Diag(ND->getLocation(), diag::note_previous_decl) 603aaf87162c5fbfbf320072da3a8e83392e1bbf041Douglas Gregor << Corrected; 604aaf87162c5fbfbf320072da3a8e83392e1bbf041Douglas Gregor 6051569f95831a8c99e9f664137bf8f40e47ee3d90fDouglas Gregor QualType T = Context.getObjCInterfaceType(Class); 6061569f95831a8c99e9f664137bf8f40e47ee3d90fDouglas Gregor TypeSourceInfo *TSInfo = Context.getTrivialTypeSourceInfo(T, NameLoc); 6071569f95831a8c99e9f664137bf8f40e47ee3d90fDouglas Gregor ReceiverType = CreateLocInfoType(T, TSInfo).getAsOpaquePtr(); 608aaf87162c5fbfbf320072da3a8e83392e1bbf041Douglas Gregor return ObjCClassMessage; 609aaf87162c5fbfbf320072da3a8e83392e1bbf041Douglas Gregor } 610aaf87162c5fbfbf320072da3a8e83392e1bbf041Douglas Gregor } else if (Result.empty() && Corrected.getAsIdentifierInfo() && 611aaf87162c5fbfbf320072da3a8e83392e1bbf041Douglas Gregor Corrected.getAsIdentifierInfo()->isStr("super")) { 612aaf87162c5fbfbf320072da3a8e83392e1bbf041Douglas Gregor // If we've found the keyword "super", this is a send to super. 61347bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor Diag(NameLoc, diag::err_unknown_receiver_suggest) 614aaf87162c5fbfbf320072da3a8e83392e1bbf041Douglas Gregor << Name << Corrected 615aaf87162c5fbfbf320072da3a8e83392e1bbf041Douglas Gregor << FixItHint::CreateReplacement(SourceRange(NameLoc), "super"); 616aaf87162c5fbfbf320072da3a8e83392e1bbf041Douglas Gregor Name = Corrected.getAsIdentifierInfo(); 617aaf87162c5fbfbf320072da3a8e83392e1bbf041Douglas Gregor return ObjCSuperMessage; 61847bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor } 61947bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor } 62047bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor 62147bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor // Fall back: let the parser try to parse it as an instance message. 62247bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor return ObjCInstanceMessage; 62347bd54392a4fd0f10e04de6a0420fd4838caaa0eDouglas Gregor} 62461f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff 6252725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas GregorSema::OwningExprResult Sema::ActOnSuperMessage(Scope *S, 6262725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor SourceLocation SuperLoc, 6272725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor Selector Sel, 6282725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor SourceLocation LBracLoc, 6292725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor SourceLocation SelectorLoc, 6302725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor SourceLocation RBracLoc, 6312725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor MultiExprArg Args) { 6322725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor // Determine whether we are inside a method or not. 6332725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor ObjCMethodDecl *Method = getCurMethodDecl(); 634f95861a4ab6bbd6a975ed079dd70eb1cc22f4467Douglas Gregor if (!Method) { 635f95861a4ab6bbd6a975ed079dd70eb1cc22f4467Douglas Gregor Diag(SuperLoc, diag::err_invalid_receiver_to_message_super); 636f95861a4ab6bbd6a975ed079dd70eb1cc22f4467Douglas Gregor return ExprError(); 637f95861a4ab6bbd6a975ed079dd70eb1cc22f4467Douglas Gregor } 6382725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor 639f95861a4ab6bbd6a975ed079dd70eb1cc22f4467Douglas Gregor ObjCInterfaceDecl *Class = Method->getClassInterface(); 640f95861a4ab6bbd6a975ed079dd70eb1cc22f4467Douglas Gregor if (!Class) { 641f95861a4ab6bbd6a975ed079dd70eb1cc22f4467Douglas Gregor Diag(SuperLoc, diag::error_no_super_class_message) 642f95861a4ab6bbd6a975ed079dd70eb1cc22f4467Douglas Gregor << Method->getDeclName(); 6432725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor return ExprError(); 64415faee19fdb9017dd6d08a690427b18c3b062c2dChris Lattner } 6452725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor 646f95861a4ab6bbd6a975ed079dd70eb1cc22f4467Douglas Gregor ObjCInterfaceDecl *Super = Class->getSuperClass(); 6472725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor if (!Super) { 648f95861a4ab6bbd6a975ed079dd70eb1cc22f4467Douglas Gregor // The current class does not have a superclass. 649f95861a4ab6bbd6a975ed079dd70eb1cc22f4467Douglas Gregor Diag(SuperLoc, diag::error_no_super_class) << Class->getIdentifier(); 6502725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor return ExprError(); 6512725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor } 6522725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor 653f95861a4ab6bbd6a975ed079dd70eb1cc22f4467Douglas Gregor // We are in a method whose class has a superclass, so 'super' 654f95861a4ab6bbd6a975ed079dd70eb1cc22f4467Douglas Gregor // is acting as a keyword. 655f95861a4ab6bbd6a975ed079dd70eb1cc22f4467Douglas Gregor if (Method->isInstanceMethod()) { 656f95861a4ab6bbd6a975ed079dd70eb1cc22f4467Douglas Gregor // Since we are in an instance method, this is an instance 657f95861a4ab6bbd6a975ed079dd70eb1cc22f4467Douglas Gregor // message to the superclass instance. 658f95861a4ab6bbd6a975ed079dd70eb1cc22f4467Douglas Gregor QualType SuperTy = Context.getObjCInterfaceType(Super); 659f95861a4ab6bbd6a975ed079dd70eb1cc22f4467Douglas Gregor SuperTy = Context.getObjCObjectPointerType(SuperTy); 660f95861a4ab6bbd6a975ed079dd70eb1cc22f4467Douglas Gregor return BuildInstanceMessage(ExprArg(*this), SuperTy, SuperLoc, 661f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor Sel, /*Method=*/0, LBracLoc, RBracLoc, 662f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor move(Args)); 6632725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor } 664f95861a4ab6bbd6a975ed079dd70eb1cc22f4467Douglas Gregor 665f95861a4ab6bbd6a975ed079dd70eb1cc22f4467Douglas Gregor // Since we are in a class method, this is a class message to 666f95861a4ab6bbd6a975ed079dd70eb1cc22f4467Douglas Gregor // the superclass. 667f95861a4ab6bbd6a975ed079dd70eb1cc22f4467Douglas Gregor return BuildClassMessage(/*ReceiverTypeInfo=*/0, 668f95861a4ab6bbd6a975ed079dd70eb1cc22f4467Douglas Gregor Context.getObjCInterfaceType(Super), 669f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor SuperLoc, Sel, /*Method=*/0, LBracLoc, RBracLoc, 670f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor move(Args)); 6712725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor} 6722725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor 6732725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// \brief Build an Objective-C class message expression. 6742725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// 6752725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// This routine takes care of both normal class messages and 6762725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// class messages to the superclass. 6772725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// 6782725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// \param ReceiverTypeInfo Type source information that describes the 6792725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// receiver of this message. This may be NULL, in which case we are 6802725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// sending to the superclass and \p SuperLoc must be a valid source 6812725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// location. 6822725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor 6832725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// \param ReceiverType The type of the object receiving the 6842725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// message. When \p ReceiverTypeInfo is non-NULL, this is the same 6852725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// type as that refers to. For a superclass send, this is the type of 6862725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// the superclass. 6872725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// 6882725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// \param SuperLoc The location of the "super" keyword in a 6892725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// superclass message. 6902725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// 6912725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// \param Sel The selector to which the message is being sent. 6922725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// 693f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor/// \param Method The method that this class message is invoking, if 694f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor/// already known. 695f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor/// 6962725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// \param LBracLoc The location of the opening square bracket ']'. 6972725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// 6982725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// \param RBrac The location of the closing square bracket ']'. 6992725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// 7002725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// \param Args The message arguments. 7012725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas GregorSema::OwningExprResult Sema::BuildClassMessage(TypeSourceInfo *ReceiverTypeInfo, 7022725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor QualType ReceiverType, 7032725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor SourceLocation SuperLoc, 7042725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor Selector Sel, 705f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor ObjCMethodDecl *Method, 7062725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor SourceLocation LBracLoc, 7072725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor SourceLocation RBracLoc, 7082725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor MultiExprArg ArgsIn) { 70992e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor if (ReceiverType->isDependentType()) { 71092e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor // If the receiver type is dependent, we can't type-check anything 71192e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor // at this point. Build a dependent expression. 71292e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor unsigned NumArgs = ArgsIn.size(); 71392e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor Expr **Args = reinterpret_cast<Expr **>(ArgsIn.release()); 71492e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor assert(SuperLoc.isInvalid() && "Message to super with dependent type"); 71592e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor return Owned(ObjCMessageExpr::Create(Context, ReceiverType, LBracLoc, 71692e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor ReceiverTypeInfo, Sel, /*Method=*/0, 71792e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor Args, NumArgs, RBracLoc)); 71892e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor } 71915faee19fdb9017dd6d08a690427b18c3b062c2dChris Lattner 7202725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor SourceLocation Loc = SuperLoc.isValid()? SuperLoc 7212725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor : ReceiverTypeInfo->getTypeLoc().getSourceRange().getBegin(); 7222725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor 7232725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor // Find the class to which we are sending this message. 7242725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor ObjCInterfaceDecl *Class = 0; 7252725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor if (const ObjCInterfaceType *ClassType 7262725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor = ReceiverType->getAs<ObjCInterfaceType>()) 7272725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor Class = ClassType->getDecl(); 7282725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor else { 7292725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor Diag(Loc, diag::err_invalid_receiver_class_message) 7302725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor << ReceiverType; 7312725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor return ExprError(); 7327c778f1c549a8ae95d50a819fd537df78da16426Steve Naroff } 7332725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor assert(Class && "We don't know which class we're messaging?"); 7342725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor 7352725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor // Find the method we are messaging. 736f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor if (!Method) { 737f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor if (Class->isForwardDecl()) { 738f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor // A forward class used in messaging is treated as a 'Class' 739f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor Diag(Loc, diag::warn_receiver_forward_class) << Class->getDeclName(); 740f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor Method = LookupFactoryMethodInGlobalPool(Sel, 741f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor SourceRange(LBracLoc, RBracLoc)); 742f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor if (Method) 743f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor Diag(Method->getLocation(), diag::note_method_sent_forward_class) 744f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor << Method->getDeclName(); 745f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor } 746f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor if (!Method) 747f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor Method = Class->lookupClassMethod(Sel); 7481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 749f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor // If we have an implementation in scope, check "private" methods. 750f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor if (!Method) 751f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor Method = LookupPrivateClassMethod(Sel, Class); 7527c778f1c549a8ae95d50a819fd537df78da16426Steve Naroff 753f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor if (Method && DiagnoseUseOfDecl(Method, Loc)) 754f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor return ExprError(); 755f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor } 7561eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7572725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor // Check the argument types and determine the result type. 7582725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor QualType ReturnType; 7592725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor unsigned NumArgs = ArgsIn.size(); 7602725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor Expr **Args = reinterpret_cast<Expr **>(ArgsIn.release()); 7612725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor if (CheckMessageArgumentTypes(Args, NumArgs, Sel, Method, true, 7622725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor LBracLoc, RBracLoc, ReturnType)) { 7632725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor for (unsigned I = 0; I != NumArgs; ++I) 7642725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor Args[I]->Destroy(Context); 7652725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor return ExprError(); 7662725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor } 7674df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek 7682725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor // Construct the appropriate ObjCMessageExpr. 7692725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor if (SuperLoc.isValid()) 7702725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor return Owned(ObjCMessageExpr::Create(Context, ReturnType, LBracLoc, 7712725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor SuperLoc, /*IsInstanceSuper=*/false, 7722725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor ReceiverType, Sel, Method, Args, 7732725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor NumArgs, RBracLoc)); 7741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7752725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor return Owned(ObjCMessageExpr::Create(Context, ReturnType, LBracLoc, 7762725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor ReceiverTypeInfo, Sel, Method, Args, 7772725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor NumArgs, RBracLoc)); 77885a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner} 77985a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner 7802725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor// ActOnClassMessage - used for both unary and keyword messages. 78185a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner// ArgExprs is optional - if it is present, the number of expressions 78285a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner// is obtained from Sel.getNumArgs(). 7832725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas GregorSema::OwningExprResult Sema::ActOnClassMessage(Scope *S, 7842725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor TypeTy *Receiver, 7852725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor Selector Sel, 7862725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor SourceLocation LBracLoc, 7872725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor SourceLocation SelectorLoc, 7882725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor SourceLocation RBracLoc, 7892725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor MultiExprArg Args) { 7902725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor TypeSourceInfo *ReceiverTypeInfo; 7912725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor QualType ReceiverType = GetTypeFromParser(Receiver, &ReceiverTypeInfo); 7922725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor if (ReceiverType.isNull()) 7932725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor return ExprError(); 7941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7962725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor if (!ReceiverTypeInfo) 7972725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor ReceiverTypeInfo = Context.getTrivialTypeSourceInfo(ReceiverType, LBracLoc); 7981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7992725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor return BuildClassMessage(ReceiverTypeInfo, ReceiverType, 800f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor /*SuperLoc=*/SourceLocation(), Sel, /*Method=*/0, 80139968adc66ab02275d2f561e372a20ae454bd4e7Douglas Gregor LBracLoc, RBracLoc, move(Args)); 8022725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor} 80387d3ef08d892df8264bd51adb6ddd4a22422cd29Steve Naroff 8042725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// \brief Build an Objective-C instance message expression. 8052725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// 8062725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// This routine takes care of both normal instance messages and 8072725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// instance messages to the superclass instance. 8082725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// 8092725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// \param Receiver The expression that computes the object that will 8102725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// receive this message. This may be empty, in which case we are 8112725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// sending to the superclass instance and \p SuperLoc must be a valid 8122725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// source location. 8132725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// 8142725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// \param ReceiverType The (static) type of the object receiving the 8152725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// message. When a \p Receiver expression is provided, this is the 8162725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// same type as that expression. For a superclass instance send, this 8172725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// is a pointer to the type of the superclass. 8182725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// 8192725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// \param SuperLoc The location of the "super" keyword in a 8202725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// superclass instance message. 8212725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// 8222725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// \param Sel The selector to which the message is being sent. 8232725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// 824f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor/// \param Method The method that this instance message is invoking, if 825f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor/// already known. 826f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor/// 8272725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// \param LBracLoc The location of the opening square bracket ']'. 8282725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// 8292725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// \param RBrac The location of the closing square bracket ']'. 8302725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// 8312725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor/// \param Args The message arguments. 8322725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas GregorSema::OwningExprResult Sema::BuildInstanceMessage(ExprArg ReceiverE, 8332725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor QualType ReceiverType, 8342725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor SourceLocation SuperLoc, 8352725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor Selector Sel, 836f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor ObjCMethodDecl *Method, 8372725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor SourceLocation LBracLoc, 8382725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor SourceLocation RBracLoc, 8392725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor MultiExprArg ArgsIn) { 8402725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor // If we have a receiver expression, perform appropriate promotions 8412725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor // and determine receiver type. 8422725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor Expr *Receiver = ReceiverE.takeAs<Expr>(); 8432725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor if (Receiver) { 84492e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor if (Receiver->isTypeDependent()) { 84592e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor // If the receiver is type-dependent, we can't type-check anything 84692e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor // at this point. Build a dependent expression. 84792e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor unsigned NumArgs = ArgsIn.size(); 84892e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor Expr **Args = reinterpret_cast<Expr **>(ArgsIn.release()); 84992e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor assert(SuperLoc.isInvalid() && "Message to super with dependent type"); 85092e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor return Owned(ObjCMessageExpr::Create(Context, Context.DependentTy, 85192e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor LBracLoc, Receiver, Sel, 85292e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor /*Method=*/0, Args, NumArgs, 85392e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor RBracLoc)); 85492e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor } 85592e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor 8562725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor // If necessary, apply function/array conversion to the receiver. 8572725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor // C99 6.7.5.3p[7,8]. 8582725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor DefaultFunctionArrayLvalueConversion(Receiver); 8592725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor ReceiverType = Receiver->getType(); 8602725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor } 86104badcf84c8d504d8491c7c7e29b58f52cb16640Douglas Gregor 8622725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor // The location of the receiver. 8632725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor SourceLocation Loc = SuperLoc.isValid()? SuperLoc : Receiver->getLocStart(); 8642725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor 865f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor if (!Method) { 866f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor // Handle messages to id. 867f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor if (ReceiverType->isObjCIdType() || ReceiverType->isBlockPointerType() || 868f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor (Receiver && Context.isObjCNSObjectType(Receiver->getType()))) { 869f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor Method = LookupInstanceMethodInGlobalPool(Sel, 8702725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor SourceRange(LBracLoc, RBracLoc)); 871f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor if (!Method) 8722725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor Method = LookupFactoryMethodInGlobalPool(Sel, 873f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor SourceRange(LBracLoc, RBracLoc)); 874f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor } else if (ReceiverType->isObjCClassType() || 875f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor ReceiverType->isObjCQualifiedClassType()) { 876f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor // Handle messages to Class. 877f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor if (ObjCMethodDecl *CurMeth = getCurMethodDecl()) { 878f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor if (ObjCInterfaceDecl *ClassDecl = CurMeth->getClassInterface()) { 879f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor // First check the public methods in the class interface. 880f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor Method = ClassDecl->lookupClassMethod(Sel); 881f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor 882f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor if (!Method) 883f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor Method = LookupPrivateClassMethod(Sel, ClassDecl); 884f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor 885f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor // FIXME: if we still haven't found a method, we need to look in 886f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor // protocols (if we have qualifiers). 8876b9dfd4257b85c388a9e3cd345cf28acb7351006Steve Naroff } 888f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor if (Method && DiagnoseUseOfDecl(Method, Loc)) 889f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor return ExprError(); 890268bc8c1f3a27d2fbd73c3115e4d633d31422ca5Fariborz Jahanian } 89104badcf84c8d504d8491c7c7e29b58f52cb16640Douglas Gregor if (!Method) { 892f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor // If not messaging 'self', look for any factory method named 'Sel'. 893f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor if (!Receiver || !isSelfExpr(Receiver)) { 894f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor Method = LookupFactoryMethodInGlobalPool(Sel, 895f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor SourceRange(LBracLoc, RBracLoc)); 896f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor if (!Method) { 897f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor // If no class (factory) method was found, check if an _instance_ 898f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor // method of the same name exists in the root class only. 8992725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor Method = LookupInstanceMethodInGlobalPool(Sel, 9002725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor SourceRange(LBracLoc, RBracLoc)); 901f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor if (Method) 902f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor if (const ObjCInterfaceDecl *ID = 903f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor dyn_cast<ObjCInterfaceDecl>(Method->getDeclContext())) { 904f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor if (ID->getSuperClass()) 905f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor Diag(Loc, diag::warn_root_inst_method_not_found) 906f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor << Sel << SourceRange(LBracLoc, RBracLoc); 907f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor } 90804badcf84c8d504d8491c7c7e29b58f52cb16640Douglas Gregor } 90904badcf84c8d504d8491c7c7e29b58f52cb16640Douglas Gregor } 91004badcf84c8d504d8491c7c7e29b58f52cb16640Douglas Gregor } 91104badcf84c8d504d8491c7c7e29b58f52cb16640Douglas Gregor } else { 912f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor ObjCInterfaceDecl* ClassDecl = 0; 913f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor 914f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor // We allow sending a message to a qualified ID ("id<foo>"), which is ok as 915f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor // long as one of the protocols implements the selector (if not, warn). 916f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor if (const ObjCObjectPointerType *QIdTy 917f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor = ReceiverType->getAsObjCQualifiedIdType()) { 918f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor // Search protocols for instance methods. 919f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor for (ObjCObjectPointerType::qual_iterator I = QIdTy->qual_begin(), 920f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor E = QIdTy->qual_end(); I != E; ++I) { 921f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor ObjCProtocolDecl *PDecl = *I; 922f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor if (PDecl && (Method = PDecl->lookupInstanceMethod(Sel))) 923f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor break; 924f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor // Since we aren't supporting "Class<foo>", look for a class method. 925f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor if (PDecl && (Method = PDecl->lookupClassMethod(Sel))) 926f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor break; 927f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor } 928f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor } else if (const ObjCObjectPointerType *OCIType 929f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor = ReceiverType->getAsObjCInterfacePointerType()) { 930f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor // We allow sending a message to a pointer to an interface (an object). 931f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor ClassDecl = OCIType->getInterfaceDecl(); 932f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor // FIXME: consider using LookupInstanceMethodInGlobalPool, since it will be 933f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor // faster than the following method (which can do *many* linear searches). 934f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor // The idea is to add class info to InstanceMethodPool. 935f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor Method = ClassDecl->lookupInstanceMethod(Sel); 936f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor 937f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor if (!Method) { 938f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor // Search protocol qualifiers. 939f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor for (ObjCObjectPointerType::qual_iterator QI = OCIType->qual_begin(), 940f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor E = OCIType->qual_end(); QI != E; ++QI) { 941f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor if ((Method = (*QI)->lookupInstanceMethod(Sel))) 942f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor break; 943f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor } 944f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor } 945f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor if (!Method) { 946f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor // If we have implementations in scope, check "private" methods. 947f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor Method = LookupPrivateInstanceMethod(Sel, ClassDecl); 948f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor 949f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor if (!Method && (!Receiver || !isSelfExpr(Receiver))) { 950f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor // If we still haven't found a method, look in the global pool. This 951f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor // behavior isn't very desirable, however we need it for GCC 952f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor // compatibility. FIXME: should we deviate?? 953f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor if (OCIType->qual_empty()) { 954f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor Method = LookupInstanceMethodInGlobalPool(Sel, 955f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor SourceRange(LBracLoc, RBracLoc)); 956f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor if (Method && !OCIType->getInterfaceDecl()->isForwardDecl()) 957f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor Diag(Loc, diag::warn_maynot_respond) 958f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor << OCIType->getInterfaceDecl()->getIdentifier() << Sel; 959f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor } 960f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor } 961f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor } 962f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor if (Method && DiagnoseUseOfDecl(Method, Loc)) 963f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor return ExprError(); 964f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor } else if (!Context.getObjCIdType().isNull() && 965f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor (ReceiverType->isPointerType() || 966f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor (ReceiverType->isIntegerType() && 967f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor ReceiverType->isScalarType()))) { 968f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor // Implicitly convert integers and pointers to 'id' but emit a warning. 969f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor Diag(Loc, diag::warn_bad_receiver_type) 970f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor << ReceiverType 971f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor << Receiver->getSourceRange(); 972f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor if (ReceiverType->isPointerType()) 973f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor ImpCastExprToType(Receiver, Context.getObjCIdType(), 974f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor CastExpr::CK_BitCast); 975f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor else 976f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor ImpCastExprToType(Receiver, Context.getObjCIdType(), 977f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor CastExpr::CK_IntegralToPointer); 978f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor ReceiverType = Receiver->getType(); 979f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor } else { 980f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor // Reject other random receiver types (e.g. structs). 981f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor Diag(Loc, diag::err_bad_receiver_type) 982f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor << ReceiverType << Receiver->getSourceRange(); 983f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor return ExprError(); 984f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor } 98504badcf84c8d504d8491c7c7e29b58f52cb16640Douglas Gregor } 986fe1a553256b46fad3c0a9e9967481bcf571339ecChris Lattner } 9871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9882725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor // Check the message arguments. 9892725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor unsigned NumArgs = ArgsIn.size(); 9902725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor Expr **Args = reinterpret_cast<Expr **>(ArgsIn.release()); 9912725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor QualType ReturnType; 9922725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor if (CheckMessageArgumentTypes(Args, NumArgs, Sel, Method, false, 9932725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor LBracLoc, RBracLoc, ReturnType)) 9942725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor return ExprError(); 99504badcf84c8d504d8491c7c7e29b58f52cb16640Douglas Gregor 9962725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor // Construct the appropriate ObjCMessageExpr instance. 9972725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor if (SuperLoc.isValid()) 9982725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor return Owned(ObjCMessageExpr::Create(Context, ReturnType, LBracLoc, 9992725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor SuperLoc, /*IsInstanceSuper=*/true, 10002725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor ReceiverType, Sel, Method, 10012725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor Args, NumArgs, RBracLoc)); 10022725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor 10032725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor return Owned(ObjCMessageExpr::Create(Context, ReturnType, LBracLoc, Receiver, 10042725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor Sel, Method, Args, NumArgs, RBracLoc)); 10052725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor} 10062725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor 10072725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor// ActOnInstanceMessage - used for both unary and keyword messages. 10082725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor// ArgExprs is optional - if it is present, the number of expressions 10092725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor// is obtained from Sel.getNumArgs(). 10102725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas GregorSema::OwningExprResult Sema::ActOnInstanceMessage(Scope *S, 10112725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor ExprArg ReceiverE, 10122725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor Selector Sel, 10132725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor SourceLocation LBracLoc, 10142725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor SourceLocation SelectorLoc, 10152725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor SourceLocation RBracLoc, 10162725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor MultiExprArg Args) { 10172725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor Expr *Receiver = static_cast<Expr *>(ReceiverE.get()); 10182725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor if (!Receiver) 10192725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor return ExprError(); 102004badcf84c8d504d8491c7c7e29b58f52cb16640Douglas Gregor 10212725ca8eb3354975ca77ed4b88ede7b60b216b9aDouglas Gregor return BuildInstanceMessage(move(ReceiverE), Receiver->getType(), 1022f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor /*SuperLoc=*/SourceLocation(), Sel, /*Method=*/0, 1023f49bb082ebf6413b2d3cb956e9c78dbb8a978c58Douglas Gregor LBracLoc, RBracLoc, move(Args)); 102485a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner} 1025eca7be6b7ebd93682eeaab2c71d59f2995dacdccChris Lattner 1026