SemaExprObjC.cpp revision 14108da7f7fc059772711e4ffee1322a27b152a7
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" 1585a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner#include "clang/AST/ASTContext.h" 1685a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner#include "clang/AST/DeclObjC.h" 17f494b579b22f9950f5af021f0bf9879a91bb8b41Steve Naroff#include "clang/AST/ExprObjC.h" 1839c28bbbf235533e9ae7d06fb9b13371dfcc542dChris Lattner#include "llvm/ADT/SmallString.h" 1961f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff#include "clang/Lex/Preprocessor.h" 2061f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff 2185a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattnerusing namespace clang; 2285a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner 2385a932e26f3c3faae6bad639a6d32e92794dfda9Chris LattnerSema::ExprResult Sema::ParseObjCStringLiteral(SourceLocation *AtLocs, 2439c28bbbf235533e9ae7d06fb9b13371dfcc542dChris Lattner ExprTy **strings, 2585a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner unsigned NumStrings) { 2639c28bbbf235533e9ae7d06fb9b13371dfcc542dChris Lattner StringLiteral **Strings = reinterpret_cast<StringLiteral**>(strings); 2739c28bbbf235533e9ae7d06fb9b13371dfcc542dChris Lattner 28f4b136fb40aeedeaaa6ce7cdff22f375eb76c47bChris Lattner // Most ObjC strings are formed out of a single piece. However, we *can* 29f4b136fb40aeedeaaa6ce7cdff22f375eb76c47bChris Lattner // have strings formed out of multiple @ strings with multiple pptokens in 30f4b136fb40aeedeaaa6ce7cdff22f375eb76c47bChris Lattner // each one, e.g. @"foo" "bar" @"baz" "qux" which need to be turned into one 31f4b136fb40aeedeaaa6ce7cdff22f375eb76c47bChris Lattner // StringLiteral for ObjCStringLiteral to hold onto. 3239c28bbbf235533e9ae7d06fb9b13371dfcc542dChris Lattner StringLiteral *S = Strings[0]; 33f4b136fb40aeedeaaa6ce7cdff22f375eb76c47bChris Lattner 34f4b136fb40aeedeaaa6ce7cdff22f375eb76c47bChris Lattner // If we have a multi-part string, merge it all together. 35f4b136fb40aeedeaaa6ce7cdff22f375eb76c47bChris Lattner if (NumStrings != 1) { 3685a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner // Concatenate objc strings. 3739c28bbbf235533e9ae7d06fb9b13371dfcc542dChris Lattner llvm::SmallString<128> StrBuf; 3839c28bbbf235533e9ae7d06fb9b13371dfcc542dChris Lattner llvm::SmallVector<SourceLocation, 8> StrLocs; 39726e168dc09fb23f53c7b004f8e919421ee91806Chris Lattner 40726e168dc09fb23f53c7b004f8e919421ee91806Chris Lattner for (unsigned i = 0; i != NumStrings; ++i) { 4139c28bbbf235533e9ae7d06fb9b13371dfcc542dChris Lattner S = Strings[i]; 4239c28bbbf235533e9ae7d06fb9b13371dfcc542dChris Lattner 4339c28bbbf235533e9ae7d06fb9b13371dfcc542dChris Lattner // ObjC strings can't be wide. 44f4b136fb40aeedeaaa6ce7cdff22f375eb76c47bChris Lattner if (S->isWide()) { 45f4b136fb40aeedeaaa6ce7cdff22f375eb76c47bChris Lattner Diag(S->getLocStart(), diag::err_cfstring_literal_not_string_constant) 46f4b136fb40aeedeaaa6ce7cdff22f375eb76c47bChris Lattner << S->getSourceRange(); 47f4b136fb40aeedeaaa6ce7cdff22f375eb76c47bChris Lattner return true; 48f4b136fb40aeedeaaa6ce7cdff22f375eb76c47bChris Lattner } 49f4b136fb40aeedeaaa6ce7cdff22f375eb76c47bChris Lattner 5039c28bbbf235533e9ae7d06fb9b13371dfcc542dChris Lattner // Get the string data. 5139c28bbbf235533e9ae7d06fb9b13371dfcc542dChris Lattner StrBuf.append(S->getStrData(), S->getStrData()+S->getByteLength()); 5239c28bbbf235533e9ae7d06fb9b13371dfcc542dChris Lattner 5339c28bbbf235533e9ae7d06fb9b13371dfcc542dChris Lattner // Get the locations of the string tokens. 5439c28bbbf235533e9ae7d06fb9b13371dfcc542dChris Lattner StrLocs.append(S->tokloc_begin(), S->tokloc_end()); 5539c28bbbf235533e9ae7d06fb9b13371dfcc542dChris Lattner 5639c28bbbf235533e9ae7d06fb9b13371dfcc542dChris Lattner // Free the temporary string. 578189cde56b4f6f938cd65f53c932fe1860d0204cTed Kremenek S->Destroy(Context); 5885a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner } 5939c28bbbf235533e9ae7d06fb9b13371dfcc542dChris Lattner 6039c28bbbf235533e9ae7d06fb9b13371dfcc542dChris Lattner // Create the aggregate string with the appropriate content and location 6139c28bbbf235533e9ae7d06fb9b13371dfcc542dChris Lattner // information. 6239c28bbbf235533e9ae7d06fb9b13371dfcc542dChris Lattner S = StringLiteral::Create(Context, &StrBuf[0], StrBuf.size(), false, 632085fd6cd22ec5c268175251db10d7c60caf7aaaChris Lattner Context.getPointerType(Context.CharTy), 6439c28bbbf235533e9ae7d06fb9b13371dfcc542dChris Lattner &StrLocs[0], StrLocs.size()); 6585a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner } 6685a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner 67690398188ea5b428f06aa13c7d4ce6eb741ad4f9Chris Lattner // Verify that this composite string is acceptable for ObjC strings. 68690398188ea5b428f06aa13c7d4ce6eb741ad4f9Chris Lattner if (CheckObjCString(S)) 6985a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner return true; 70a0af1fe67da29343cd182c51cd48d91b740ecef2Chris Lattner 71a0af1fe67da29343cd182c51cd48d91b740ecef2Chris Lattner // Initialize the constant string interface lazily. This assumes 72d9fd7647e286723d100db4cfeab31ec022eec629Steve Naroff // the NSString interface is seen in this translation unit. Note: We 73d9fd7647e286723d100db4cfeab31ec022eec629Steve Naroff // don't use NSConstantString, since the runtime team considers this 74d9fd7647e286723d100db4cfeab31ec022eec629Steve Naroff // interface private (even though it appears in the header files). 75a0af1fe67da29343cd182c51cd48d91b740ecef2Chris Lattner QualType Ty = Context.getObjCConstantStringInterface(); 76a0af1fe67da29343cd182c51cd48d91b740ecef2Chris Lattner if (!Ty.isNull()) { 7714108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff Ty = Context.getObjCObjectPointerType(Ty); 7813fd7e5111032f54b538dd66d035b0ccc1f82467Chris Lattner } else { 79d9fd7647e286723d100db4cfeab31ec022eec629Steve Naroff IdentifierInfo *NSIdent = &Context.Idents.get("NSString"); 80a0af1fe67da29343cd182c51cd48d91b740ecef2Chris Lattner NamedDecl *IF = LookupName(TUScope, NSIdent, LookupOrdinaryName); 81a0af1fe67da29343cd182c51cd48d91b740ecef2Chris Lattner if (ObjCInterfaceDecl *StrIF = dyn_cast_or_null<ObjCInterfaceDecl>(IF)) { 82a0af1fe67da29343cd182c51cd48d91b740ecef2Chris Lattner Context.setObjCConstantStringInterface(StrIF); 83a0af1fe67da29343cd182c51cd48d91b740ecef2Chris Lattner Ty = Context.getObjCConstantStringInterface(); 8414108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff Ty = Context.getObjCObjectPointerType(Ty); 85a0af1fe67da29343cd182c51cd48d91b740ecef2Chris Lattner } else { 86d9fd7647e286723d100db4cfeab31ec022eec629Steve Naroff // If there is no NSString interface defined then treat constant 87a0af1fe67da29343cd182c51cd48d91b740ecef2Chris Lattner // strings as untyped objects and let the runtime figure it out later. 88a0af1fe67da29343cd182c51cd48d91b740ecef2Chris Lattner Ty = Context.getObjCIdType(); 89a0af1fe67da29343cd182c51cd48d91b740ecef2Chris Lattner } 9013fd7e5111032f54b538dd66d035b0ccc1f82467Chris Lattner } 91a0af1fe67da29343cd182c51cd48d91b740ecef2Chris Lattner 92f4b136fb40aeedeaaa6ce7cdff22f375eb76c47bChris Lattner return new (Context) ObjCStringLiteral(S, Ty, AtLocs[0]); 9385a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner} 9485a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner 95fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders CarlssonExpr *Sema::BuildObjCEncodeExpression(SourceLocation AtLoc, 96fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson QualType EncodedType, 97fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson SourceLocation RParenLoc) { 98fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson QualType StrTy; 99fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson if (EncodedType->isDependentType()) 100fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson StrTy = Context.DependentTy; 101fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson else { 102fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson std::string Str; 103fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson Context.getObjCEncodingForType(EncodedType, Str); 104fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson 105fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson // The type of @encode is the same as the type of the corresponding string, 106fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson // which is an array type. 107fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson StrTy = Context.CharTy; 108fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson // A C++ string literal has a const-qualified element type (C++ 2.13.4p1). 109fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson if (getLangOptions().CPlusPlus) 110fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson StrTy.addConst(); 111fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson StrTy = Context.getConstantArrayType(StrTy, llvm::APInt(32, Str.size()+1), 112fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson ArrayType::Normal, 0); 113fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson } 114fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson 115fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson return new (Context) ObjCEncodeExpr(StrTy, EncodedType, AtLoc, RParenLoc); 116fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson} 117fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson 11885a932e26f3c3faae6bad639a6d32e92794dfda9Chris LattnerSema::ExprResult Sema::ParseObjCEncodeExpression(SourceLocation AtLoc, 11985a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner SourceLocation EncodeLoc, 12085a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner SourceLocation LParenLoc, 121a0af1fe67da29343cd182c51cd48d91b740ecef2Chris Lattner TypeTy *ty, 12285a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner SourceLocation RParenLoc) { 123a0af1fe67da29343cd182c51cd48d91b740ecef2Chris Lattner QualType EncodedType = QualType::getFromOpaquePtr(ty); 12485a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner 125fc0f021b492cf28ee7b3a6bd4445ae569e6f15deAnders Carlsson return BuildObjCEncodeExpression(AtLoc, EncodedType, RParenLoc); 12685a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner} 12785a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner 12885a932e26f3c3faae6bad639a6d32e92794dfda9Chris LattnerSema::ExprResult Sema::ParseObjCSelectorExpression(Selector Sel, 12985a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner SourceLocation AtLoc, 13085a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner SourceLocation SelLoc, 13185a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner SourceLocation LParenLoc, 13285a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner SourceLocation RParenLoc) { 1337ff22ded2221f442b1f8ff78172938d04ec8c926Fariborz Jahanian ObjCMethodDecl *Method = LookupInstanceMethodInGlobalPool(Sel, 1347ff22ded2221f442b1f8ff78172938d04ec8c926Fariborz Jahanian SourceRange(LParenLoc, RParenLoc)); 1357ff22ded2221f442b1f8ff78172938d04ec8c926Fariborz Jahanian if (!Method) 1367ff22ded2221f442b1f8ff78172938d04ec8c926Fariborz Jahanian Method = LookupFactoryMethodInGlobalPool(Sel, 1377ff22ded2221f442b1f8ff78172938d04ec8c926Fariborz Jahanian SourceRange(LParenLoc, RParenLoc)); 1387ff22ded2221f442b1f8ff78172938d04ec8c926Fariborz Jahanian if (!Method) 1397ff22ded2221f442b1f8ff78172938d04ec8c926Fariborz Jahanian Diag(SelLoc, diag::warn_undeclared_selector) << Sel; 1407ff22ded2221f442b1f8ff78172938d04ec8c926Fariborz Jahanian 141a0af1fe67da29343cd182c51cd48d91b740ecef2Chris Lattner QualType Ty = Context.getObjCSelType(); 142a0af1fe67da29343cd182c51cd48d91b740ecef2Chris Lattner return new (Context) ObjCSelectorExpr(Ty, Sel, AtLoc, RParenLoc); 14385a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner} 14485a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner 14585a932e26f3c3faae6bad639a6d32e92794dfda9Chris LattnerSema::ExprResult Sema::ParseObjCProtocolExpression(IdentifierInfo *ProtocolId, 14685a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner SourceLocation AtLoc, 14785a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner SourceLocation ProtoLoc, 14885a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner SourceLocation LParenLoc, 14985a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner SourceLocation RParenLoc) { 1506e378de1aebdfeb44f2a7677ed207b32b3a41fbfDouglas Gregor ObjCProtocolDecl* PDecl = LookupProtocol(ProtocolId); 15185a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner if (!PDecl) { 1523c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner Diag(ProtoLoc, diag::err_undeclared_protocol) << ProtocolId; 15385a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner return true; 15485a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner } 15585a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner 156a0af1fe67da29343cd182c51cd48d91b740ecef2Chris Lattner QualType Ty = Context.getObjCProtoType(); 157a0af1fe67da29343cd182c51cd48d91b740ecef2Chris Lattner if (Ty.isNull()) 15885a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner return true; 15914108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff Ty = Context.getObjCObjectPointerType(Ty); 160a0af1fe67da29343cd182c51cd48d91b740ecef2Chris Lattner return new (Context) ObjCProtocolExpr(Ty, PDecl, AtLoc, RParenLoc); 16185a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner} 16285a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner 16391e19b2029447e75d2c7730ff888cc396874685bDaniel Dunbarbool Sema::CheckMessageArgumentTypes(Expr **Args, unsigned NumArgs, 16491e19b2029447e75d2c7730ff888cc396874685bDaniel Dunbar Selector Sel, ObjCMethodDecl *Method, 165077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner bool isClassMessage, 166637cebb67c59765e1412c589550c8c9ba001baebDaniel Dunbar SourceLocation lbrac, SourceLocation rbrac, 167637cebb67c59765e1412c589550c8c9ba001baebDaniel Dunbar QualType &ReturnType) { 168637cebb67c59765e1412c589550c8c9ba001baebDaniel Dunbar if (!Method) { 1696660c8a4cc2115929d92be83bbc54c307002a321Daniel Dunbar // Apply default argument promotion as for (C99 6.5.2.2p6). 1706660c8a4cc2115929d92be83bbc54c307002a321Daniel Dunbar for (unsigned i = 0; i != NumArgs; i++) 1716660c8a4cc2115929d92be83bbc54c307002a321Daniel Dunbar DefaultArgumentPromotion(Args[i]); 1726660c8a4cc2115929d92be83bbc54c307002a321Daniel Dunbar 173077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner unsigned DiagID = isClassMessage ? diag::warn_class_method_not_found : 174077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner diag::warn_inst_method_not_found; 175077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner Diag(lbrac, DiagID) 176077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner << Sel << isClassMessage << SourceRange(lbrac, rbrac); 177637cebb67c59765e1412c589550c8c9ba001baebDaniel Dunbar ReturnType = Context.getObjCIdType(); 178637cebb67c59765e1412c589550c8c9ba001baebDaniel Dunbar return false; 179637cebb67c59765e1412c589550c8c9ba001baebDaniel Dunbar } 180077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner 181077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner ReturnType = Method->getResultType(); 182637cebb67c59765e1412c589550c8c9ba001baebDaniel Dunbar 18391e19b2029447e75d2c7730ff888cc396874685bDaniel Dunbar unsigned NumNamedArgs = Sel.getNumArgs(); 18491e19b2029447e75d2c7730ff888cc396874685bDaniel Dunbar assert(NumArgs >= NumNamedArgs && "Too few arguments for selector!"); 18591e19b2029447e75d2c7730ff888cc396874685bDaniel Dunbar 186312531a8cd69c562d5687bd69fd334be99d87320Chris Lattner bool IsError = false; 18791e19b2029447e75d2c7730ff888cc396874685bDaniel Dunbar for (unsigned i = 0; i < NumNamedArgs; i++) { 18885a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner Expr *argExpr = Args[i]; 18985a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner assert(argExpr && "CheckMessageArgumentTypes(): missing expression"); 19085a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner 19189951a86b594513c2a013532ed45d197413b1087Chris Lattner QualType lhsType = Method->param_begin()[i]->getType(); 19285a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner QualType rhsType = argExpr->getType(); 19385a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner 19485a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner // If necessary, apply function/array conversion. C99 6.7.5.3p[7,8]. 195987798ad1d5db2a8ec26cd5bbe434b35ad32659cChris Lattner if (lhsType->isArrayType()) 196987798ad1d5db2a8ec26cd5bbe434b35ad32659cChris Lattner lhsType = Context.getArrayDecayedType(lhsType); 19785a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner else if (lhsType->isFunctionType()) 19885a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner lhsType = Context.getPointerType(lhsType); 19985a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner 200987798ad1d5db2a8ec26cd5bbe434b35ad32659cChris Lattner AssignConvertType Result = 201987798ad1d5db2a8ec26cd5bbe434b35ad32659cChris Lattner CheckSingleAssignmentConstraints(lhsType, argExpr); 20285a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner if (Args[i] != argExpr) // The expression was converted. 20385a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner Args[i] = argExpr; // Make sure we store the converted expression. 20485a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner 205312531a8cd69c562d5687bd69fd334be99d87320Chris Lattner IsError |= 20685a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner DiagnoseAssignmentResult(Result, argExpr->getLocStart(), lhsType, rhsType, 20785a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner argExpr, "sending"); 20885a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner } 20991e19b2029447e75d2c7730ff888cc396874685bDaniel Dunbar 21091e19b2029447e75d2c7730ff888cc396874685bDaniel Dunbar // Promote additional arguments to variadic methods. 21191e19b2029447e75d2c7730ff888cc396874685bDaniel Dunbar if (Method->isVariadic()) { 212dce5e2cabf07ff25eb4d9e1859c0a21c69f588d2Anders Carlsson for (unsigned i = NumNamedArgs; i < NumArgs; ++i) 213312531a8cd69c562d5687bd69fd334be99d87320Chris Lattner IsError |= DefaultVariadicArgumentPromotion(Args[i], VariadicMethod); 21491e19b2029447e75d2c7730ff888cc396874685bDaniel Dunbar } else { 21591e19b2029447e75d2c7730ff888cc396874685bDaniel Dunbar // Check for extra arguments to non-variadic methods. 21691e19b2029447e75d2c7730ff888cc396874685bDaniel Dunbar if (NumArgs != NumNamedArgs) { 21791e19b2029447e75d2c7730ff888cc396874685bDaniel Dunbar Diag(Args[NumNamedArgs]->getLocStart(), 218fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner diag::err_typecheck_call_too_many_args) 2192c21a073525cdfa68e4439b7af551385dc2796abChris Lattner << 2 /*method*/ << Method->getSourceRange() 220fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner << SourceRange(Args[NumNamedArgs]->getLocStart(), 221fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner Args[NumArgs-1]->getLocEnd()); 22291e19b2029447e75d2c7730ff888cc396874685bDaniel Dunbar } 22391e19b2029447e75d2c7730ff888cc396874685bDaniel Dunbar } 22491e19b2029447e75d2c7730ff888cc396874685bDaniel Dunbar 225312531a8cd69c562d5687bd69fd334be99d87320Chris Lattner return IsError; 22685a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner} 22785a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner 2286b9dfd4257b85c388a9e3cd345cf28acb7351006Steve Naroffbool Sema::isSelfExpr(Expr *RExpr) { 2296b9dfd4257b85c388a9e3cd345cf28acb7351006Steve Naroff if (DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(RExpr)) 2306b9dfd4257b85c388a9e3cd345cf28acb7351006Steve Naroff if (DRE->getDecl()->getIdentifier() == &Context.Idents.get("self")) 2316b9dfd4257b85c388a9e3cd345cf28acb7351006Steve Naroff return true; 2326b9dfd4257b85c388a9e3cd345cf28acb7351006Steve Naroff return false; 2336b9dfd4257b85c388a9e3cd345cf28acb7351006Steve Naroff} 2346b9dfd4257b85c388a9e3cd345cf28acb7351006Steve Naroff 235f1afaf6fe2d94ab265299853f288b676694f7554Steve Naroff// Helper method for ActOnClassMethod/ActOnInstanceMethod. 236f1afaf6fe2d94ab265299853f288b676694f7554Steve Naroff// Will search "local" class/category implementations for a method decl. 237175ba1e8180083927aabd7cc8137baa16be75646Fariborz Jahanian// If failed, then we search in class's root for an instance method. 238f1afaf6fe2d94ab265299853f288b676694f7554Steve Naroff// Returns 0 if no method is found. 2395609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve NaroffObjCMethodDecl *Sema::LookupPrivateClassMethod(Selector Sel, 240f1afaf6fe2d94ab265299853f288b676694f7554Steve Naroff ObjCInterfaceDecl *ClassDecl) { 241f1afaf6fe2d94ab265299853f288b676694f7554Steve Naroff ObjCMethodDecl *Method = 0; 2425609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff // lookup in class and all superclasses 2435609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff while (ClassDecl && !Method) { 2448fc463adf0116fdcbff86e9cca11955aad1649feDouglas Gregor if (ObjCImplementationDecl *ImpDecl 2458fc463adf0116fdcbff86e9cca11955aad1649feDouglas Gregor = LookupObjCImplementation(ClassDecl->getIdentifier())) 24617945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis Method = ImpDecl->getClassMethod(Sel); 247f1afaf6fe2d94ab265299853f288b676694f7554Steve Naroff 2485609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff // Look through local category implementations associated with the class. 2495609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff if (!Method) { 2505609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff for (unsigned i = 0; i < ObjCCategoryImpls.size() && !Method; i++) { 2515609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff if (ObjCCategoryImpls[i]->getClassInterface() == ClassDecl) 25217945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis Method = ObjCCategoryImpls[i]->getClassMethod(Sel); 2535609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff } 2545609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff } 2555609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff 2565609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff // Before we give up, check if the selector is an instance method. 2575609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff // But only in the root. This matches gcc's behaviour and what the 2585609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff // runtime expects. 2595609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff if (!Method && !ClassDecl->getSuperClass()) { 26017945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis Method = ClassDecl->lookupInstanceMethod(Sel); 2615609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff // Look through local category implementations associated 2625609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff // with the root class. 2635609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff if (!Method) 2645609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff Method = LookupPrivateInstanceMethod(Sel, ClassDecl); 265f1afaf6fe2d94ab265299853f288b676694f7554Steve Naroff } 2665609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff 2675609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff ClassDecl = ClassDecl->getSuperClass(); 268f1afaf6fe2d94ab265299853f288b676694f7554Steve Naroff } 2695609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff return Method; 2705609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff} 2715609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff 2725609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve NaroffObjCMethodDecl *Sema::LookupPrivateInstanceMethod(Selector Sel, 2735609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff ObjCInterfaceDecl *ClassDecl) { 2745609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff ObjCMethodDecl *Method = 0; 2755609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff while (ClassDecl && !Method) { 2765609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff // If we have implementations in scope, check "private" methods. 2778fc463adf0116fdcbff86e9cca11955aad1649feDouglas Gregor if (ObjCImplementationDecl *ImpDecl 2788fc463adf0116fdcbff86e9cca11955aad1649feDouglas Gregor = LookupObjCImplementation(ClassDecl->getIdentifier())) 27917945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis Method = ImpDecl->getInstanceMethod(Sel); 2805609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff 2815609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff // Look through local category implementations associated with the class. 2825609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff if (!Method) { 2835609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff for (unsigned i = 0; i < ObjCCategoryImpls.size() && !Method; i++) { 2845609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff if (ObjCCategoryImpls[i]->getClassInterface() == ClassDecl) 28517945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis Method = ObjCCategoryImpls[i]->getInstanceMethod(Sel); 2865609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff } 2875609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff } 2885609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff ClassDecl = ClassDecl->getSuperClass(); 289175ba1e8180083927aabd7cc8137baa16be75646Fariborz Jahanian } 290f1afaf6fe2d94ab265299853f288b676694f7554Steve Naroff return Method; 291f1afaf6fe2d94ab265299853f288b676694f7554Steve Naroff} 292f1afaf6fe2d94ab265299853f288b676694f7554Steve Naroff 29361f72cbd037e58f12cfe90cd442373f44092f030Steve NaroffAction::OwningExprResult Sema::ActOnClassPropertyRefExpr( 29461f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff IdentifierInfo &receiverName, 29561f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff IdentifierInfo &propertyName, 29661f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff SourceLocation &receiverNameLoc, 29761f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff SourceLocation &propertyNameLoc) { 29861f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff 29961f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff ObjCInterfaceDecl *IFace = getObjCInterfaceDecl(&receiverName); 30061f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff 30161f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff // Search for a declared property first. 30261f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff 30361f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff Selector Sel = PP.getSelectorTable().getNullarySelector(&propertyName); 30417945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis ObjCMethodDecl *Getter = IFace->lookupClassMethod(Sel); 30561f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff 30661f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff // If this reference is in an @implementation, check for 'private' methods. 30761f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff if (!Getter) 30861f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff if (ObjCMethodDecl *CurMeth = getCurMethodDecl()) 30961f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff if (ObjCInterfaceDecl *ClassDecl = CurMeth->getClassInterface()) 3108fc463adf0116fdcbff86e9cca11955aad1649feDouglas Gregor if (ObjCImplementationDecl *ImpDecl 3118fc463adf0116fdcbff86e9cca11955aad1649feDouglas Gregor = LookupObjCImplementation(ClassDecl->getIdentifier())) 31217945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis Getter = ImpDecl->getClassMethod(Sel); 31361f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff 31461f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff if (Getter) { 31561f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff // FIXME: refactor/share with ActOnMemberReference(). 31661f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff // Check if we can reference this property. 31761f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff if (DiagnoseUseOfDecl(Getter, propertyNameLoc)) 31861f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff return ExprError(); 31961f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff } 32061f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff 32161f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff // Look for the matching setter, in case it is needed. 322fdc92b7877535e6264fe43cfbdc8f01e9b224f81Steve Naroff Selector SetterSel = 323fdc92b7877535e6264fe43cfbdc8f01e9b224f81Steve Naroff SelectorTable::constructSetterName(PP.getIdentifierTable(), 324fdc92b7877535e6264fe43cfbdc8f01e9b224f81Steve Naroff PP.getSelectorTable(), &propertyName); 32561f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff 32617945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis ObjCMethodDecl *Setter = IFace->lookupClassMethod(SetterSel); 32761f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff if (!Setter) { 32861f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff // If this reference is in an @implementation, also check for 'private' 32961f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff // methods. 33061f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff if (ObjCMethodDecl *CurMeth = getCurMethodDecl()) 33161f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff if (ObjCInterfaceDecl *ClassDecl = CurMeth->getClassInterface()) 3328fc463adf0116fdcbff86e9cca11955aad1649feDouglas Gregor if (ObjCImplementationDecl *ImpDecl 3338fc463adf0116fdcbff86e9cca11955aad1649feDouglas Gregor = LookupObjCImplementation(ClassDecl->getIdentifier())) 33417945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis Setter = ImpDecl->getClassMethod(SetterSel); 33561f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff } 33661f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff // Look through local category implementations associated with the class. 33761f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff if (!Setter) { 33861f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff for (unsigned i = 0; i < ObjCCategoryImpls.size() && !Setter; i++) { 33961f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff if (ObjCCategoryImpls[i]->getClassInterface() == IFace) 34017945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis Setter = ObjCCategoryImpls[i]->getClassMethod(SetterSel); 34161f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff } 34261f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff } 34361f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff 34461f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff if (Setter && DiagnoseUseOfDecl(Setter, propertyNameLoc)) 34561f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff return ExprError(); 34661f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff 34761f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff if (Getter || Setter) { 34861f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff QualType PType; 34961f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff 35061f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff if (Getter) 35161f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff PType = Getter->getResultType(); 35261f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff else { 35361f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff for (ObjCMethodDecl::param_iterator PI = Setter->param_begin(), 35461f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff E = Setter->param_end(); PI != E; ++PI) 35561f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff PType = (*PI)->getType(); 35661f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff } 35761f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff return Owned(new (Context) ObjCKVCRefExpr(Getter, PType, Setter, 35861f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff propertyNameLoc, IFace, receiverNameLoc)); 35961f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff } 36061f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff return ExprError(Diag(propertyNameLoc, diag::err_property_not_found) 36161f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff << &propertyName << Context.getObjCInterfaceType(IFace)); 36261f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff} 36361f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff 36461f72cbd037e58f12cfe90cd442373f44092f030Steve Naroff 36585a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner// ActOnClassMessage - used for both unary and keyword messages. 36685a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner// ArgExprs is optional - if it is present, the number of expressions 36785a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner// is obtained from Sel.getNumArgs(). 36885a932e26f3c3faae6bad639a6d32e92794dfda9Chris LattnerSema::ExprResult Sema::ActOnClassMessage( 36985a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner Scope *S, 37085a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner IdentifierInfo *receiverName, Selector Sel, 371ff975cfab9ada27df86038286d1678084aeb3428Anders Carlsson SourceLocation lbrac, SourceLocation receiverLoc, 372ff975cfab9ada27df86038286d1678084aeb3428Anders Carlsson SourceLocation selectorLoc, SourceLocation rbrac, 3735cb93b8bf009c4b0ae09b71ba85f54b2a7ea8022Steve Naroff ExprTy **Args, unsigned NumArgs) 37485a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner{ 37585a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner assert(receiverName && "missing receiver class name"); 37685a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner 37785a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner Expr **ArgExprs = reinterpret_cast<Expr **>(Args); 378a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek ObjCInterfaceDecl* ClassDecl = 0; 379fc93d52ada07d52de0ad4fd051b6a08e21d421ffSteve Naroff bool isSuper = false; 380fc93d52ada07d52de0ad4fd051b6a08e21d421ffSteve Naroff 3818469265156c6344fa1100a6a7bf6349acc187d9fChris Lattner if (receiverName->isStr("super")) { 3825cb93b8bf009c4b0ae09b71ba85f54b2a7ea8022Steve Naroff if (getCurMethodDecl()) { 3835cb93b8bf009c4b0ae09b71ba85f54b2a7ea8022Steve Naroff isSuper = true; 3844b1e275eb743b46cd10153bb58743d89af7242eaFariborz Jahanian ObjCInterfaceDecl *OID = getCurMethodDecl()->getClassInterface(); 3854b1e275eb743b46cd10153bb58743d89af7242eaFariborz Jahanian if (!OID) 3864b1e275eb743b46cd10153bb58743d89af7242eaFariborz Jahanian return Diag(lbrac, diag::error_no_super_class_message) 3874b1e275eb743b46cd10153bb58743d89af7242eaFariborz Jahanian << getCurMethodDecl()->getDeclName(); 3884b1e275eb743b46cd10153bb58743d89af7242eaFariborz Jahanian ClassDecl = OID->getSuperClass(); 3895cb93b8bf009c4b0ae09b71ba85f54b2a7ea8022Steve Naroff if (!ClassDecl) 3904b1e275eb743b46cd10153bb58743d89af7242eaFariborz Jahanian return Diag(lbrac, diag::error_no_super_class) << OID->getDeclName(); 391f8d49f64ef6ab7e632717a31631fc289aab69428Douglas Gregor if (getCurMethodDecl()->isInstanceMethod()) { 3925cb93b8bf009c4b0ae09b71ba85f54b2a7ea8022Steve Naroff QualType superTy = Context.getObjCInterfaceType(ClassDecl); 39314108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff superTy = Context.getObjCObjectPointerType(superTy); 3948189cde56b4f6f938cd65f53c932fe1860d0204cTed Kremenek ExprResult ReceiverExpr = new (Context) ObjCSuperExpr(SourceLocation(), 3958189cde56b4f6f938cd65f53c932fe1860d0204cTed Kremenek superTy); 3965cb93b8bf009c4b0ae09b71ba85f54b2a7ea8022Steve Naroff // We are really in an instance method, redirect. 397ff975cfab9ada27df86038286d1678084aeb3428Anders Carlsson return ActOnInstanceMessage(ReceiverExpr.get(), Sel, lbrac, 398ff975cfab9ada27df86038286d1678084aeb3428Anders Carlsson selectorLoc, rbrac, Args, NumArgs); 3995cb93b8bf009c4b0ae09b71ba85f54b2a7ea8022Steve Naroff } 4005cb93b8bf009c4b0ae09b71ba85f54b2a7ea8022Steve Naroff // We are sending a message to 'super' within a class method. Do nothing, 4015cb93b8bf009c4b0ae09b71ba85f54b2a7ea8022Steve Naroff // the receiver will pass through as 'super' (how convenient:-). 4025cb93b8bf009c4b0ae09b71ba85f54b2a7ea8022Steve Naroff } else { 4035cb93b8bf009c4b0ae09b71ba85f54b2a7ea8022Steve Naroff // 'super' has been used outside a method context. If a variable named 4045cb93b8bf009c4b0ae09b71ba85f54b2a7ea8022Steve Naroff // 'super' has been declared, redirect. If not, produce a diagnostic. 40547b9a1ca55e61e37f5a368740e29de190345acc6Douglas Gregor NamedDecl *SuperDecl = LookupName(S, receiverName, LookupOrdinaryName); 4065cb93b8bf009c4b0ae09b71ba85f54b2a7ea8022Steve Naroff ValueDecl *VD = dyn_cast_or_null<ValueDecl>(SuperDecl); 4075cb93b8bf009c4b0ae09b71ba85f54b2a7ea8022Steve Naroff if (VD) { 4088189cde56b4f6f938cd65f53c932fe1860d0204cTed Kremenek ExprResult ReceiverExpr = new (Context) DeclRefExpr(VD, VD->getType(), 4098189cde56b4f6f938cd65f53c932fe1860d0204cTed Kremenek receiverLoc); 4105cb93b8bf009c4b0ae09b71ba85f54b2a7ea8022Steve Naroff // We are really in an instance method, redirect. 411ff975cfab9ada27df86038286d1678084aeb3428Anders Carlsson return ActOnInstanceMessage(ReceiverExpr.get(), Sel, lbrac, 412ff975cfab9ada27df86038286d1678084aeb3428Anders Carlsson selectorLoc, rbrac, Args, NumArgs); 4135cb93b8bf009c4b0ae09b71ba85f54b2a7ea8022Steve Naroff } 41408631c5fa053867146b5ee8be658c229f6bf127cChris Lattner return Diag(receiverLoc, diag::err_undeclared_var_use) << receiverName; 4155cb93b8bf009c4b0ae09b71ba85f54b2a7ea8022Steve Naroff } 41685a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner } else 41785a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner ClassDecl = getObjCInterfaceDecl(receiverName); 41885a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner 4197c778f1c549a8ae95d50a819fd537df78da16426Steve Naroff // The following code allows for the following GCC-ism: 420cb28be6e82809f9f514585ac2692fa04bb56978aSteve Naroff // 421cb28be6e82809f9f514585ac2692fa04bb56978aSteve Naroff // typedef XCElementDisplayRect XCElementGraphicsRect; 422cb28be6e82809f9f514585ac2692fa04bb56978aSteve Naroff // 423cb28be6e82809f9f514585ac2692fa04bb56978aSteve Naroff // @implementation XCRASlice 424cb28be6e82809f9f514585ac2692fa04bb56978aSteve Naroff // - whatever { // Note that XCElementGraphicsRect is a typedef name. 425cb28be6e82809f9f514585ac2692fa04bb56978aSteve Naroff // _sGraphicsDelegate =[[XCElementGraphicsRect alloc] init]; 426cb28be6e82809f9f514585ac2692fa04bb56978aSteve Naroff // } 427cb28be6e82809f9f514585ac2692fa04bb56978aSteve Naroff // 4287c778f1c549a8ae95d50a819fd537df78da16426Steve Naroff // If necessary, the following lookup could move to getObjCInterfaceDecl(). 4297c778f1c549a8ae95d50a819fd537df78da16426Steve Naroff if (!ClassDecl) { 43047b9a1ca55e61e37f5a368740e29de190345acc6Douglas Gregor NamedDecl *IDecl = LookupName(TUScope, receiverName, LookupOrdinaryName); 4317c778f1c549a8ae95d50a819fd537df78da16426Steve Naroff if (TypedefDecl *OCTD = dyn_cast_or_null<TypedefDecl>(IDecl)) { 4327c778f1c549a8ae95d50a819fd537df78da16426Steve Naroff const ObjCInterfaceType *OCIT; 4337c778f1c549a8ae95d50a819fd537df78da16426Steve Naroff OCIT = OCTD->getUnderlyingType()->getAsObjCInterfaceType(); 43464540d71b4aaab07d93cb3593ce462d26a83d326Chris Lattner if (!OCIT) { 43564540d71b4aaab07d93cb3593ce462d26a83d326Chris Lattner Diag(receiverLoc, diag::err_invalid_receiver_to_message); 43664540d71b4aaab07d93cb3593ce462d26a83d326Chris Lattner return true; 43764540d71b4aaab07d93cb3593ce462d26a83d326Chris Lattner } 438ebff1fed660fac9c50a7b7571da797bb489254a4Fariborz Jahanian ClassDecl = OCIT->getDecl(); 4397c778f1c549a8ae95d50a819fd537df78da16426Steve Naroff } 4407c778f1c549a8ae95d50a819fd537df78da16426Steve Naroff } 4417c778f1c549a8ae95d50a819fd537df78da16426Steve Naroff assert(ClassDecl && "missing interface declaration"); 442cb28be6e82809f9f514585ac2692fa04bb56978aSteve Naroff ObjCMethodDecl *Method = 0; 44385a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner QualType returnType; 44489bc314c6ddf3b851ccf68bc34d3f1b5927a10f6Fariborz Jahanian if (ClassDecl->isForwardDecl()) { 44589bc314c6ddf3b851ccf68bc34d3f1b5927a10f6Fariborz Jahanian // A forward class used in messaging is tread as a 'Class' 4469f8f026fc1cd1aa2942a2850a037398415128f8aFariborz Jahanian Diag(lbrac, diag::warn_receiver_forward_class) << ClassDecl->getDeclName(); 44789bc314c6ddf3b851ccf68bc34d3f1b5927a10f6Fariborz Jahanian Method = LookupFactoryMethodInGlobalPool(Sel, SourceRange(lbrac,rbrac)); 44889bc314c6ddf3b851ccf68bc34d3f1b5927a10f6Fariborz Jahanian if (Method) 4499f8f026fc1cd1aa2942a2850a037398415128f8aFariborz Jahanian Diag(Method->getLocation(), diag::note_method_sent_forward_class) 4509f8f026fc1cd1aa2942a2850a037398415128f8aFariborz Jahanian << Method->getDeclName(); 45189bc314c6ddf3b851ccf68bc34d3f1b5927a10f6Fariborz Jahanian } 45289bc314c6ddf3b851ccf68bc34d3f1b5927a10f6Fariborz Jahanian if (!Method) 45317945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis Method = ClassDecl->lookupClassMethod(Sel); 4547c778f1c549a8ae95d50a819fd537df78da16426Steve Naroff 4557c778f1c549a8ae95d50a819fd537df78da16426Steve Naroff // If we have an implementation in scope, check "private" methods. 456f1afaf6fe2d94ab265299853f288b676694f7554Steve Naroff if (!Method) 4575609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff Method = LookupPrivateClassMethod(Sel, ClassDecl); 4587c778f1c549a8ae95d50a819fd537df78da16426Steve Naroff 45948f3bb9f780f6e64ab71ba0202ca04b07473805aDouglas Gregor if (Method && DiagnoseUseOfDecl(Method, receiverLoc)) 46048f3bb9f780f6e64ab71ba0202ca04b07473805aDouglas Gregor return true; 46159843ad8835d497cd3c17ff91aa039e31d607791Anders Carlsson 462077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner if (CheckMessageArgumentTypes(ArgExprs, NumArgs, Sel, Method, true, 463637cebb67c59765e1412c589550c8c9ba001baebDaniel Dunbar lbrac, rbrac, returnType)) 464637cebb67c59765e1412c589550c8c9ba001baebDaniel Dunbar return true; 4654df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek 466187ba159b04d8cc760daeee5cfbbc69450b2d50dAnders Carlsson returnType = returnType.getNonReferenceType(); 467187ba159b04d8cc760daeee5cfbbc69450b2d50dAnders Carlsson 468390b4cc8b45a05612349269ef08faab3e4688f06Mike Stump // If we have the ObjCInterfaceDecl* for the class that is receiving the 469390b4cc8b45a05612349269ef08faab3e4688f06Mike Stump // message, use that to construct the ObjCMessageExpr. Otherwise pass on the 470390b4cc8b45a05612349269ef08faab3e4688f06Mike Stump // IdentifierInfo* for the class. 471390b4cc8b45a05612349269ef08faab3e4688f06Mike Stump // FIXME: need to do a better job handling 'super' usage within a class. For 472390b4cc8b45a05612349269ef08faab3e4688f06Mike Stump // now, we simply pass the "super" identifier through (which isn't consistent 473390b4cc8b45a05612349269ef08faab3e4688f06Mike Stump // with instance methods. 4747c778f1c549a8ae95d50a819fd537df78da16426Steve Naroff if (isSuper) 4758189cde56b4f6f938cd65f53c932fe1860d0204cTed Kremenek return new (Context) ObjCMessageExpr(receiverName, Sel, returnType, Method, 4768189cde56b4f6f938cd65f53c932fe1860d0204cTed Kremenek lbrac, rbrac, ArgExprs, NumArgs); 4774df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek else 4788189cde56b4f6f938cd65f53c932fe1860d0204cTed Kremenek return new (Context) ObjCMessageExpr(ClassDecl, Sel, returnType, Method, 4798189cde56b4f6f938cd65f53c932fe1860d0204cTed Kremenek lbrac, rbrac, ArgExprs, NumArgs); 48085a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner} 48185a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner 48285a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner// ActOnInstanceMessage - used for both unary and keyword messages. 48385a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner// ArgExprs is optional - if it is present, the number of expressions 48485a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner// is obtained from Sel.getNumArgs(). 4851565e0364b05d163640dd2b6feed43bae67df4fdChris LattnerSema::ExprResult Sema::ActOnInstanceMessage(ExprTy *receiver, Selector Sel, 486b77792eabf5882cf9af8cc810599b20432fda6c2Chris Lattner SourceLocation lbrac, 487ff975cfab9ada27df86038286d1678084aeb3428Anders Carlsson SourceLocation receiverLoc, 488b77792eabf5882cf9af8cc810599b20432fda6c2Chris Lattner SourceLocation rbrac, 489b77792eabf5882cf9af8cc810599b20432fda6c2Chris Lattner ExprTy **Args, unsigned NumArgs) { 49085a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner assert(receiver && "missing receiver expression"); 49185a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner 49285a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner Expr **ArgExprs = reinterpret_cast<Expr **>(Args); 49385a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner Expr *RExpr = static_cast<Expr *>(receiver); 494d0d4599d8ff308ac34db9e38c578f5b8d32afa7eChris Lattner 495d0d4599d8ff308ac34db9e38c578f5b8d32afa7eChris Lattner // If necessary, apply function/array conversion to the receiver. 496d0d4599d8ff308ac34db9e38c578f5b8d32afa7eChris Lattner // C99 6.7.5.3p[7,8]. 497d0d4599d8ff308ac34db9e38c578f5b8d32afa7eChris Lattner DefaultFunctionArrayConversion(RExpr); 498d0d4599d8ff308ac34db9e38c578f5b8d32afa7eChris Lattner 49985a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner QualType returnType; 500b77792eabf5882cf9af8cc810599b20432fda6c2Chris Lattner QualType ReceiverCType = 501b77792eabf5882cf9af8cc810599b20432fda6c2Chris Lattner Context.getCanonicalType(RExpr->getType()).getUnqualifiedType(); 50287d3ef08d892df8264bd51adb6ddd4a22422cd29Steve Naroff 50387d3ef08d892df8264bd51adb6ddd4a22422cd29Steve Naroff // Handle messages to 'super'. 504279d896d4972417f62537fe4a87a8c3c3d675108Steve Naroff if (isa<ObjCSuperExpr>(RExpr)) { 50587d3ef08d892df8264bd51adb6ddd4a22422cd29Steve Naroff ObjCMethodDecl *Method = 0; 50687d3ef08d892df8264bd51adb6ddd4a22422cd29Steve Naroff if (ObjCMethodDecl *CurMeth = getCurMethodDecl()) { 50787d3ef08d892df8264bd51adb6ddd4a22422cd29Steve Naroff // If we have an interface in scope, check 'super' methods. 50887d3ef08d892df8264bd51adb6ddd4a22422cd29Steve Naroff if (ObjCInterfaceDecl *ClassDecl = CurMeth->getClassInterface()) 5095609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff if (ObjCInterfaceDecl *SuperDecl = ClassDecl->getSuperClass()) { 51017945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis Method = SuperDecl->lookupInstanceMethod(Sel); 5115609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff 5125609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff if (!Method) 5135609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff // If we have implementations in scope, check "private" methods. 5145609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff Method = LookupPrivateInstanceMethod(Sel, SuperDecl); 5155609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff } 51687d3ef08d892df8264bd51adb6ddd4a22422cd29Steve Naroff } 517ff975cfab9ada27df86038286d1678084aeb3428Anders Carlsson 51848f3bb9f780f6e64ab71ba0202ca04b07473805aDouglas Gregor if (Method && DiagnoseUseOfDecl(Method, receiverLoc)) 51948f3bb9f780f6e64ab71ba0202ca04b07473805aDouglas Gregor return true; 52059843ad8835d497cd3c17ff91aa039e31d607791Anders Carlsson 521077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner if (CheckMessageArgumentTypes(ArgExprs, NumArgs, Sel, Method, false, 52287d3ef08d892df8264bd51adb6ddd4a22422cd29Steve Naroff lbrac, rbrac, returnType)) 52387d3ef08d892df8264bd51adb6ddd4a22422cd29Steve Naroff return true; 524187ba159b04d8cc760daeee5cfbbc69450b2d50dAnders Carlsson 525187ba159b04d8cc760daeee5cfbbc69450b2d50dAnders Carlsson returnType = returnType.getNonReferenceType(); 5268189cde56b4f6f938cd65f53c932fe1860d0204cTed Kremenek return new (Context) ObjCMessageExpr(RExpr, Sel, returnType, Method, lbrac, 5278189cde56b4f6f938cd65f53c932fe1860d0204cTed Kremenek rbrac, ArgExprs, NumArgs); 52887d3ef08d892df8264bd51adb6ddd4a22422cd29Steve Naroff } 52987d3ef08d892df8264bd51adb6ddd4a22422cd29Steve Naroff 53014108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff // Handle messages to id. 5316c4088e5fc0ce98bf3213d47f6f38bfbfa20c813Steve Naroff if (ReceiverCType == Context.getCanonicalType(Context.getObjCIdType()) || 532636bed1b8185099ef40a4f7fd192fc4242b385a4Fariborz Jahanian ReceiverCType->isBlockPointerType() || 533636bed1b8185099ef40a4f7fd192fc4242b385a4Fariborz Jahanian Context.isObjCNSObjectType(RExpr->getType())) { 534037cda5282e73f30bb09fa316047554b1af1e2efSteve Naroff ObjCMethodDecl *Method = LookupInstanceMethodInGlobalPool( 535037cda5282e73f30bb09fa316047554b1af1e2efSteve Naroff Sel, SourceRange(lbrac,rbrac)); 5366e10a08fe0427ab34c463dd59d9c0997d4f72170Chris Lattner if (!Method) 537f0aaf7a59729a4ae0146e3464ee987745be95829Douglas Gregor Method = LookupFactoryMethodInGlobalPool(Sel, SourceRange(lbrac, rbrac)); 538077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner if (CheckMessageArgumentTypes(ArgExprs, NumArgs, Sel, Method, false, 539637cebb67c59765e1412c589550c8c9ba001baebDaniel Dunbar lbrac, rbrac, returnType)) 540637cebb67c59765e1412c589550c8c9ba001baebDaniel Dunbar return true; 541187ba159b04d8cc760daeee5cfbbc69450b2d50dAnders Carlsson returnType = returnType.getNonReferenceType(); 5428189cde56b4f6f938cd65f53c932fe1860d0204cTed Kremenek return new (Context) ObjCMessageExpr(RExpr, Sel, returnType, Method, lbrac, 5438189cde56b4f6f938cd65f53c932fe1860d0204cTed Kremenek rbrac, ArgExprs, NumArgs); 544fe1a553256b46fad3c0a9e9967481bcf571339ecChris Lattner } 545fe1a553256b46fad3c0a9e9967481bcf571339ecChris Lattner 546fe1a553256b46fad3c0a9e9967481bcf571339ecChris Lattner // Handle messages to Class. 547b77792eabf5882cf9af8cc810599b20432fda6c2Chris Lattner if (ReceiverCType == Context.getCanonicalType(Context.getObjCClassType())) { 5482b1cc8be4dda4cd122485be0168b3c43d7dff15fChris Lattner ObjCMethodDecl *Method = 0; 5496b9dfd4257b85c388a9e3cd345cf28acb7351006Steve Naroff 5506562fdad21432377f0cc5e0c627c28f0c85df4ddChris Lattner if (ObjCMethodDecl *CurMeth = getCurMethodDecl()) { 551d526c2f2ef28643c15589135b59eb4a8d9f9414cSteve Naroff if (ObjCInterfaceDecl *ClassDecl = CurMeth->getClassInterface()) { 552d526c2f2ef28643c15589135b59eb4a8d9f9414cSteve Naroff // First check the public methods in the class interface. 55317945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis Method = ClassDecl->lookupClassMethod(Sel); 554d526c2f2ef28643c15589135b59eb4a8d9f9414cSteve Naroff 555f1afaf6fe2d94ab265299853f288b676694f7554Steve Naroff if (!Method) 5565609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff Method = LookupPrivateClassMethod(Sel, ClassDecl); 557d526c2f2ef28643c15589135b59eb4a8d9f9414cSteve Naroff } 55848f3bb9f780f6e64ab71ba0202ca04b07473805aDouglas Gregor if (Method && DiagnoseUseOfDecl(Method, receiverLoc)) 55948f3bb9f780f6e64ab71ba0202ca04b07473805aDouglas Gregor return true; 560d526c2f2ef28643c15589135b59eb4a8d9f9414cSteve Naroff } 5616b9dfd4257b85c388a9e3cd345cf28acb7351006Steve Naroff if (!Method) { 5626b9dfd4257b85c388a9e3cd345cf28acb7351006Steve Naroff // If not messaging 'self', look for any factory method named 'Sel'. 5636b9dfd4257b85c388a9e3cd345cf28acb7351006Steve Naroff if (!isSelfExpr(RExpr)) { 564f0aaf7a59729a4ae0146e3464ee987745be95829Douglas Gregor Method = LookupFactoryMethodInGlobalPool(Sel, SourceRange(lbrac,rbrac)); 565b1006c7f5647025541b1b1cc64a196a417e6c6acFariborz Jahanian if (!Method) { 566041f2fd6237c7ce72864e42c66c6b12b52f35f9cFariborz Jahanian // If no class (factory) method was found, check if an _instance_ 567041f2fd6237c7ce72864e42c66c6b12b52f35f9cFariborz Jahanian // method of the same name exists in the root class only. 5686b9dfd4257b85c388a9e3cd345cf28acb7351006Steve Naroff Method = LookupInstanceMethodInGlobalPool( 5696b9dfd4257b85c388a9e3cd345cf28acb7351006Steve Naroff Sel, SourceRange(lbrac,rbrac)); 570041f2fd6237c7ce72864e42c66c6b12b52f35f9cFariborz Jahanian if (Method) 571041f2fd6237c7ce72864e42c66c6b12b52f35f9cFariborz Jahanian if (const ObjCInterfaceDecl *ID = 572041f2fd6237c7ce72864e42c66c6b12b52f35f9cFariborz Jahanian dyn_cast<ObjCInterfaceDecl>(Method->getDeclContext())) { 573041f2fd6237c7ce72864e42c66c6b12b52f35f9cFariborz Jahanian if (ID->getSuperClass()) 574041f2fd6237c7ce72864e42c66c6b12b52f35f9cFariborz Jahanian Diag(lbrac, diag::warn_root_inst_method_not_found) 575041f2fd6237c7ce72864e42c66c6b12b52f35f9cFariborz Jahanian << Sel << SourceRange(lbrac, rbrac); 576041f2fd6237c7ce72864e42c66c6b12b52f35f9cFariborz Jahanian } 577b1006c7f5647025541b1b1cc64a196a417e6c6acFariborz Jahanian } 5786b9dfd4257b85c388a9e3cd345cf28acb7351006Steve Naroff } 5796b9dfd4257b85c388a9e3cd345cf28acb7351006Steve Naroff } 580077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner if (CheckMessageArgumentTypes(ArgExprs, NumArgs, Sel, Method, false, 581637cebb67c59765e1412c589550c8c9ba001baebDaniel Dunbar lbrac, rbrac, returnType)) 582637cebb67c59765e1412c589550c8c9ba001baebDaniel Dunbar return true; 583187ba159b04d8cc760daeee5cfbbc69450b2d50dAnders Carlsson returnType = returnType.getNonReferenceType(); 5848189cde56b4f6f938cd65f53c932fe1860d0204cTed Kremenek return new (Context) ObjCMessageExpr(RExpr, Sel, returnType, Method, lbrac, 5858189cde56b4f6f938cd65f53c932fe1860d0204cTed Kremenek rbrac, ArgExprs, NumArgs); 586fe1a553256b46fad3c0a9e9967481bcf571339ecChris Lattner } 587fe1a553256b46fad3c0a9e9967481bcf571339ecChris Lattner 5882b1cc8be4dda4cd122485be0168b3c43d7dff15fChris Lattner ObjCMethodDecl *Method = 0; 589fe1a553256b46fad3c0a9e9967481bcf571339ecChris Lattner ObjCInterfaceDecl* ClassDecl = 0; 5902b1cc8be4dda4cd122485be0168b3c43d7dff15fChris Lattner 5912b1cc8be4dda4cd122485be0168b3c43d7dff15fChris Lattner // We allow sending a message to a qualified ID ("id<foo>"), which is ok as 5922b1cc8be4dda4cd122485be0168b3c43d7dff15fChris Lattner // long as one of the protocols implements the selector (if not, warn). 593d1b3c2dd5bc1f3103bee6137957aa7c5f8f2f0bcSteve Naroff if (const ObjCObjectPointerType *QIdTy = 594d1b3c2dd5bc1f3103bee6137957aa7c5f8f2f0bcSteve Naroff ReceiverCType->getAsObjCQualifiedIdType()) { 595f7f52e7bf5a4dc36d45b98531e0b21e343fc19deSteve Naroff // Search protocols for instance methods. 596d1b3c2dd5bc1f3103bee6137957aa7c5f8f2f0bcSteve Naroff for (ObjCObjectPointerType::qual_iterator I = QIdTy->qual_begin(), 597446ee4eb4fc4c705a59365252df7a5c253daafa1Steve Naroff E = QIdTy->qual_end(); I != E; ++I) { 598446ee4eb4fc4c705a59365252df7a5c253daafa1Steve Naroff ObjCProtocolDecl *PDecl = *I; 59917945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis if (PDecl && (Method = PDecl->lookupInstanceMethod(Sel))) 600fe1a553256b46fad3c0a9e9967481bcf571339ecChris Lattner break; 601ebaa768521cfd5318d77f1efaf7ae47020863a9dSteve Naroff // Since we aren't supporting "Class<foo>", look for a class method. 60217945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis if (PDecl && (Method = PDecl->lookupClassMethod(Sel))) 603ebaa768521cfd5318d77f1efaf7ae47020863a9dSteve Naroff break; 604fe1a553256b46fad3c0a9e9967481bcf571339ecChris Lattner } 60514108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff } else if (const ObjCObjectPointerType *OCIType = 60614108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff ReceiverCType->getAsObjCInterfacePointerType()) { 6072b1cc8be4dda4cd122485be0168b3c43d7dff15fChris Lattner // We allow sending a message to a pointer to an interface (an object). 608fb8cc1dfd87a1cbbaa17d64ec753d3fe8a9e9c38Chris Lattner 60914108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff ClassDecl = OCIType->getInterfaceDecl(); 610037cda5282e73f30bb09fa316047554b1af1e2efSteve Naroff // FIXME: consider using LookupInstanceMethodInGlobalPool, since it will be 611390b4cc8b45a05612349269ef08faab3e4688f06Mike Stump // faster than the following method (which can do *many* linear searches). 612037cda5282e73f30bb09fa316047554b1af1e2efSteve Naroff // The idea is to add class info to InstanceMethodPool. 61317945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis Method = ClassDecl->lookupInstanceMethod(Sel); 614fe1a553256b46fad3c0a9e9967481bcf571339ecChris Lattner 615fe1a553256b46fad3c0a9e9967481bcf571339ecChris Lattner if (!Method) { 616fe1a553256b46fad3c0a9e9967481bcf571339ecChris Lattner // Search protocol qualifiers. 61714108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff for (ObjCObjectPointerType::qual_iterator QI = OCIType->qual_begin(), 618279d896d4972417f62537fe4a87a8c3c3d675108Steve Naroff E = OCIType->qual_end(); QI != E; ++QI) { 61917945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis if ((Method = (*QI)->lookupInstanceMethod(Sel))) 62085a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner break; 62185a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner } 62285a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner } 6230de21fd85d79bccd32f04256f5b3328ab5ed7c95Steve Naroff if (!Method) { 6245609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff // If we have implementations in scope, check "private" methods. 6255609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff Method = LookupPrivateInstanceMethod(Sel, ClassDecl); 6265609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff 6275609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff if (!Method && !isSelfExpr(RExpr)) { 6286b9dfd4257b85c388a9e3cd345cf28acb7351006Steve Naroff // If we still haven't found a method, look in the global pool. This 6296b9dfd4257b85c388a9e3cd345cf28acb7351006Steve Naroff // behavior isn't very desirable, however we need it for GCC 6306b9dfd4257b85c388a9e3cd345cf28acb7351006Steve Naroff // compatibility. FIXME: should we deviate?? 6315609ec04ed9a4fd58c3203d210cf32e9283feb5eSteve Naroff if (OCIType->qual_empty()) { 6326b9dfd4257b85c388a9e3cd345cf28acb7351006Steve Naroff Method = LookupInstanceMethodInGlobalPool( 6336b9dfd4257b85c388a9e3cd345cf28acb7351006Steve Naroff Sel, SourceRange(lbrac,rbrac)); 63414108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff if (Method && !OCIType->getInterfaceDecl()->isForwardDecl()) 6356b9dfd4257b85c388a9e3cd345cf28acb7351006Steve Naroff Diag(lbrac, diag::warn_maynot_respond) 63614108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff << OCIType->getInterfaceDecl()->getIdentifier()->getName() << Sel; 6376b9dfd4257b85c388a9e3cd345cf28acb7351006Steve Naroff } 638268bc8c1f3a27d2fbd73c3115e4d633d31422ca5Fariborz Jahanian } 6390de21fd85d79bccd32f04256f5b3328ab5ed7c95Steve Naroff } 64048f3bb9f780f6e64ab71ba0202ca04b07473805aDouglas Gregor if (Method && DiagnoseUseOfDecl(Method, receiverLoc)) 64148f3bb9f780f6e64ab71ba0202ca04b07473805aDouglas Gregor return true; 6420c73f37f0a48a1512bc0477a71f0d6cffcb78fc0Chris Lattner } else if (!Context.getObjCIdType().isNull() && 6430c73f37f0a48a1512bc0477a71f0d6cffcb78fc0Chris Lattner (ReceiverCType->isPointerType() || 6440c73f37f0a48a1512bc0477a71f0d6cffcb78fc0Chris Lattner (ReceiverCType->isIntegerType() && 6450c73f37f0a48a1512bc0477a71f0d6cffcb78fc0Chris Lattner ReceiverCType->isScalarType()))) { 6460c73f37f0a48a1512bc0477a71f0d6cffcb78fc0Chris Lattner // Implicitly convert integers and pointers to 'id' but emit a warning. 6478e2945ad9104f0ce4928c386faf458b6b83d9060Steve Naroff Diag(lbrac, diag::warn_bad_receiver_type) 648d162584991885ab004a02573a73ce06422b921fcChris Lattner << RExpr->getType() << RExpr->getSourceRange(); 6490c73f37f0a48a1512bc0477a71f0d6cffcb78fc0Chris Lattner ImpCastExprToType(RExpr, Context.getObjCIdType()); 6500c73f37f0a48a1512bc0477a71f0d6cffcb78fc0Chris Lattner } else { 6510c73f37f0a48a1512bc0477a71f0d6cffcb78fc0Chris Lattner // Reject other random receiver types (e.g. structs). 6520c73f37f0a48a1512bc0477a71f0d6cffcb78fc0Chris Lattner Diag(lbrac, diag::err_bad_receiver_type) 6530c73f37f0a48a1512bc0477a71f0d6cffcb78fc0Chris Lattner << RExpr->getType() << RExpr->getSourceRange(); 6542b1cc8be4dda4cd122485be0168b3c43d7dff15fChris Lattner return true; 655fe1a553256b46fad3c0a9e9967481bcf571339ecChris Lattner } 656fe1a553256b46fad3c0a9e9967481bcf571339ecChris Lattner 6575b53005fb9ef24b8bdfe995f29b4662de468128aFariborz Jahanian if (Method) 6585b53005fb9ef24b8bdfe995f29b4662de468128aFariborz Jahanian DiagnoseSentinelCalls(Method, receiverLoc, ArgExprs, NumArgs); 659077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner if (CheckMessageArgumentTypes(ArgExprs, NumArgs, Sel, Method, false, 660637cebb67c59765e1412c589550c8c9ba001baebDaniel Dunbar lbrac, rbrac, returnType)) 661637cebb67c59765e1412c589550c8c9ba001baebDaniel Dunbar return true; 662187ba159b04d8cc760daeee5cfbbc69450b2d50dAnders Carlsson returnType = returnType.getNonReferenceType(); 6638189cde56b4f6f938cd65f53c932fe1860d0204cTed Kremenek return new (Context) ObjCMessageExpr(RExpr, Sel, returnType, Method, lbrac, 6648189cde56b4f6f938cd65f53c932fe1860d0204cTed Kremenek rbrac, ArgExprs, NumArgs); 66585a932e26f3c3faae6bad639a6d32e92794dfda9Chris Lattner} 666eca7be6b7ebd93682eeaab2c71d59f2995dacdccChris Lattner 667eca7be6b7ebd93682eeaab2c71d59f2995dacdccChris Lattner//===----------------------------------------------------------------------===// 668eca7be6b7ebd93682eeaab2c71d59f2995dacdccChris Lattner// ObjCQualifiedIdTypesAreCompatible - Compatibility testing for qualified id's. 669eca7be6b7ebd93682eeaab2c71d59f2995dacdccChris Lattner//===----------------------------------------------------------------------===// 670eca7be6b7ebd93682eeaab2c71d59f2995dacdccChris Lattner 671eca7be6b7ebd93682eeaab2c71d59f2995dacdccChris Lattner/// ProtocolCompatibleWithProtocol - return 'true' if 'lProto' is in the 672eca7be6b7ebd93682eeaab2c71d59f2995dacdccChris Lattner/// inheritance hierarchy of 'rProto'. 673eca7be6b7ebd93682eeaab2c71d59f2995dacdccChris Lattnerstatic bool ProtocolCompatibleWithProtocol(ObjCProtocolDecl *lProto, 674eca7be6b7ebd93682eeaab2c71d59f2995dacdccChris Lattner ObjCProtocolDecl *rProto) { 675eca7be6b7ebd93682eeaab2c71d59f2995dacdccChris Lattner if (lProto == rProto) 676eca7be6b7ebd93682eeaab2c71d59f2995dacdccChris Lattner return true; 677780f329cb011bff0da5763e2e9744eec093d0509Chris Lattner for (ObjCProtocolDecl::protocol_iterator PI = rProto->protocol_begin(), 678780f329cb011bff0da5763e2e9744eec093d0509Chris Lattner E = rProto->protocol_end(); PI != E; ++PI) 679780f329cb011bff0da5763e2e9744eec093d0509Chris Lattner if (ProtocolCompatibleWithProtocol(lProto, *PI)) 680eca7be6b7ebd93682eeaab2c71d59f2995dacdccChris Lattner return true; 681eca7be6b7ebd93682eeaab2c71d59f2995dacdccChris Lattner return false; 682eca7be6b7ebd93682eeaab2c71d59f2995dacdccChris Lattner} 683eca7be6b7ebd93682eeaab2c71d59f2995dacdccChris Lattner 684eca7be6b7ebd93682eeaab2c71d59f2995dacdccChris Lattner/// ClassImplementsProtocol - Checks that 'lProto' protocol 685eca7be6b7ebd93682eeaab2c71d59f2995dacdccChris Lattner/// has been implemented in IDecl class, its super class or categories (if 686eca7be6b7ebd93682eeaab2c71d59f2995dacdccChris Lattner/// lookupCategory is true). 687eca7be6b7ebd93682eeaab2c71d59f2995dacdccChris Lattnerstatic bool ClassImplementsProtocol(ObjCProtocolDecl *lProto, 688eca7be6b7ebd93682eeaab2c71d59f2995dacdccChris Lattner ObjCInterfaceDecl *IDecl, 68926631704d15e2fe19bae8a22939e0a473407c20dFariborz Jahanian bool lookupCategory, 69026631704d15e2fe19bae8a22939e0a473407c20dFariborz Jahanian bool RHSIsQualifiedID = false) { 691eca7be6b7ebd93682eeaab2c71d59f2995dacdccChris Lattner 692eca7be6b7ebd93682eeaab2c71d59f2995dacdccChris Lattner // 1st, look up the class. 6933db6cae19c236fe2cef343c90105ce7cca7de965Chris Lattner const ObjCList<ObjCProtocolDecl> &Protocols = 6943db6cae19c236fe2cef343c90105ce7cca7de965Chris Lattner IDecl->getReferencedProtocols(); 6953db6cae19c236fe2cef343c90105ce7cca7de965Chris Lattner 6963db6cae19c236fe2cef343c90105ce7cca7de965Chris Lattner for (ObjCList<ObjCProtocolDecl>::iterator PI = Protocols.begin(), 6973db6cae19c236fe2cef343c90105ce7cca7de965Chris Lattner E = Protocols.end(); PI != E; ++PI) { 6983db6cae19c236fe2cef343c90105ce7cca7de965Chris Lattner if (ProtocolCompatibleWithProtocol(lProto, *PI)) 699eca7be6b7ebd93682eeaab2c71d59f2995dacdccChris Lattner return true; 700390b4cc8b45a05612349269ef08faab3e4688f06Mike Stump // This is dubious and is added to be compatible with gcc. In gcc, it is 701390b4cc8b45a05612349269ef08faab3e4688f06Mike Stump // also allowed assigning a protocol-qualified 'id' type to a LHS object 702390b4cc8b45a05612349269ef08faab3e4688f06Mike Stump // when protocol in qualified LHS is in list of protocols in the rhs 'id' 703390b4cc8b45a05612349269ef08faab3e4688f06Mike Stump // object. This IMO, should be a bug. 704390b4cc8b45a05612349269ef08faab3e4688f06Mike Stump // FIXME: Treat this as an extension, and flag this as an error when GCC 705390b4cc8b45a05612349269ef08faab3e4688f06Mike Stump // extensions are not enabled. 7063db6cae19c236fe2cef343c90105ce7cca7de965Chris Lattner if (RHSIsQualifiedID && ProtocolCompatibleWithProtocol(*PI, lProto)) 70726631704d15e2fe19bae8a22939e0a473407c20dFariborz Jahanian return true; 708eca7be6b7ebd93682eeaab2c71d59f2995dacdccChris Lattner } 709eca7be6b7ebd93682eeaab2c71d59f2995dacdccChris Lattner 710eca7be6b7ebd93682eeaab2c71d59f2995dacdccChris Lattner // 2nd, look up the category. 711eca7be6b7ebd93682eeaab2c71d59f2995dacdccChris Lattner if (lookupCategory) 712eca7be6b7ebd93682eeaab2c71d59f2995dacdccChris Lattner for (ObjCCategoryDecl *CDecl = IDecl->getCategoryList(); CDecl; 713eca7be6b7ebd93682eeaab2c71d59f2995dacdccChris Lattner CDecl = CDecl->getNextClassCategory()) { 714780f329cb011bff0da5763e2e9744eec093d0509Chris Lattner for (ObjCCategoryDecl::protocol_iterator PI = CDecl->protocol_begin(), 715780f329cb011bff0da5763e2e9744eec093d0509Chris Lattner E = CDecl->protocol_end(); PI != E; ++PI) 716780f329cb011bff0da5763e2e9744eec093d0509Chris Lattner if (ProtocolCompatibleWithProtocol(lProto, *PI)) 717eca7be6b7ebd93682eeaab2c71d59f2995dacdccChris Lattner return true; 718eca7be6b7ebd93682eeaab2c71d59f2995dacdccChris Lattner } 719eca7be6b7ebd93682eeaab2c71d59f2995dacdccChris Lattner 720eca7be6b7ebd93682eeaab2c71d59f2995dacdccChris Lattner // 3rd, look up the super class(s) 721eca7be6b7ebd93682eeaab2c71d59f2995dacdccChris Lattner if (IDecl->getSuperClass()) 722eca7be6b7ebd93682eeaab2c71d59f2995dacdccChris Lattner return 72326631704d15e2fe19bae8a22939e0a473407c20dFariborz Jahanian ClassImplementsProtocol(lProto, IDecl->getSuperClass(), lookupCategory, 72426631704d15e2fe19bae8a22939e0a473407c20dFariborz Jahanian RHSIsQualifiedID); 725eca7be6b7ebd93682eeaab2c71d59f2995dacdccChris Lattner 726eca7be6b7ebd93682eeaab2c71d59f2995dacdccChris Lattner return false; 727eca7be6b7ebd93682eeaab2c71d59f2995dacdccChris Lattner} 728eca7be6b7ebd93682eeaab2c71d59f2995dacdccChris Lattner 7292574a68e5cca0171f1e8c09373cb2f7e612ab77eFariborz Jahanian/// QualifiedIdConformsQualifiedId - compare id<p,...> with id<p1,...> 7302574a68e5cca0171f1e8c09373cb2f7e612ab77eFariborz Jahanian/// return true if lhs's protocols conform to rhs's protocol; false 7312574a68e5cca0171f1e8c09373cb2f7e612ab77eFariborz Jahanian/// otherwise. 7322574a68e5cca0171f1e8c09373cb2f7e612ab77eFariborz Jahanianbool Sema::QualifiedIdConformsQualifiedId(QualType lhs, QualType rhs) { 7332574a68e5cca0171f1e8c09373cb2f7e612ab77eFariborz Jahanian if (lhs->isObjCQualifiedIdType() && rhs->isObjCQualifiedIdType()) 7342574a68e5cca0171f1e8c09373cb2f7e612ab77eFariborz Jahanian return ObjCQualifiedIdTypesAreCompatible(lhs, rhs, false); 7352574a68e5cca0171f1e8c09373cb2f7e612ab77eFariborz Jahanian return false; 7362574a68e5cca0171f1e8c09373cb2f7e612ab77eFariborz Jahanian} 7372574a68e5cca0171f1e8c09373cb2f7e612ab77eFariborz Jahanian 738b1698cf972be75084d760c82389ab5b49a386c31Chris Lattner/// ObjCQualifiedIdTypesAreCompatible - We know that one of lhs/rhs is an 739b1698cf972be75084d760c82389ab5b49a386c31Chris Lattner/// ObjCQualifiedIDType. 74015edf0de6b5bc9ae227bcc9658a157ac30efd92eSteve Naroff/// FIXME: Move to ASTContext::typesAreCompatible() and friends. 741eca7be6b7ebd93682eeaab2c71d59f2995dacdccChris Lattnerbool Sema::ObjCQualifiedIdTypesAreCompatible(QualType lhs, QualType rhs, 742eca7be6b7ebd93682eeaab2c71d59f2995dacdccChris Lattner bool compare) { 743eca7be6b7ebd93682eeaab2c71d59f2995dacdccChris Lattner // Allow id<P..> and an 'id' or void* type in all cases. 74414108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff if (lhs->isVoidPointerType() || 74514108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff lhs->isObjCIdType() || lhs->isObjCClassType()) 74614108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff return true; 74714108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff else if (rhs->isVoidPointerType() || 74814108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff rhs->isObjCIdType() || rhs->isObjCClassType()) 74914108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff return true; 75014108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff 751d1b3c2dd5bc1f3103bee6137957aa7c5f8f2f0bcSteve Naroff if (const ObjCObjectPointerType *lhsQID = lhs->getAsObjCQualifiedIdType()) { 75214108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff const ObjCObjectPointerType *rhsOPT = rhs->getAsObjCObjectPointerType(); 753289d9f243d9074513368d27eef3b647f72a38324Steve Naroff 75414108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff if (!rhsOPT) return false; 755eca7be6b7ebd93682eeaab2c71d59f2995dacdccChris Lattner 75614108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff if (rhsOPT->qual_empty()) { 75714108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff // If the RHS is a unqualified interface pointer "NSString*", 75814108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff // make sure we check the class hierarchy. 75914108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff if (ObjCInterfaceDecl *rhsID = rhsOPT->getInterfaceDecl()) { 76014108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff for (ObjCObjectPointerType::qual_iterator I = lhsQID->qual_begin(), 76114108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff E = lhsQID->qual_end(); I != E; ++I) { 76214108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff // when comparing an id<P> on lhs with a static type on rhs, 76314108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff // see if static class implements all of id's protocols, directly or 76414108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff // through its super class and categories. 76514108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff if (!ClassImplementsProtocol(*I, rhsID, true)) 76614108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff return false; 76714108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff } 76814108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff return true; 76914108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff } 77014108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff // If there are no qualifiers and no interface, we have an 'id'. 77114108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff return true; 772eca7be6b7ebd93682eeaab2c71d59f2995dacdccChris Lattner } 77314108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff // Both the right and left sides have qualifiers. 774d1b3c2dd5bc1f3103bee6137957aa7c5f8f2f0bcSteve Naroff for (ObjCObjectPointerType::qual_iterator I = lhsQID->qual_begin(), 775446ee4eb4fc4c705a59365252df7a5c253daafa1Steve Naroff E = lhsQID->qual_end(); I != E; ++I) { 776446ee4eb4fc4c705a59365252df7a5c253daafa1Steve Naroff ObjCProtocolDecl *lhsProto = *I; 777eca7be6b7ebd93682eeaab2c71d59f2995dacdccChris Lattner bool match = false; 778eca7be6b7ebd93682eeaab2c71d59f2995dacdccChris Lattner 779eca7be6b7ebd93682eeaab2c71d59f2995dacdccChris Lattner // when comparing an id<P> on lhs with a static type on rhs, 780eca7be6b7ebd93682eeaab2c71d59f2995dacdccChris Lattner // see if static class implements all of id's protocols, directly or 781eca7be6b7ebd93682eeaab2c71d59f2995dacdccChris Lattner // through its super class and categories. 78214108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff for (ObjCObjectPointerType::qual_iterator J = rhsOPT->qual_begin(), 78314108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff E = rhsOPT->qual_end(); J != E; ++J) { 78414108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff ObjCProtocolDecl *rhsProto = *J; 785b1698cf972be75084d760c82389ab5b49a386c31Chris Lattner if (ProtocolCompatibleWithProtocol(lhsProto, rhsProto) || 78682b4e768d38c12ceba7db23a96e8d845e00fdeb7Eli Friedman (compare && ProtocolCompatibleWithProtocol(rhsProto, lhsProto))) { 787eca7be6b7ebd93682eeaab2c71d59f2995dacdccChris Lattner match = true; 788b1698cf972be75084d760c82389ab5b49a386c31Chris Lattner break; 789eca7be6b7ebd93682eeaab2c71d59f2995dacdccChris Lattner } 790eca7be6b7ebd93682eeaab2c71d59f2995dacdccChris Lattner } 79114108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff // If the RHS is a qualified interface pointer "NSString<P>*", 79214108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff // make sure we check the class hierarchy. 79314108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff if (ObjCInterfaceDecl *rhsID = rhsOPT->getInterfaceDecl()) { 79414108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff for (ObjCObjectPointerType::qual_iterator I = lhsQID->qual_begin(), 79514108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff E = lhsQID->qual_end(); I != E; ++I) { 79614108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff // when comparing an id<P> on lhs with a static type on rhs, 79714108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff // see if static class implements all of id's protocols, directly or 79814108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff // through its super class and categories. 79914108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff if (ClassImplementsProtocol(*I, rhsID, true)) { 80014108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff match = true; 80114108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff break; 802289d9f243d9074513368d27eef3b647f72a38324Steve Naroff } 803289d9f243d9074513368d27eef3b647f72a38324Steve Naroff } 804289d9f243d9074513368d27eef3b647f72a38324Steve Naroff } 805eca7be6b7ebd93682eeaab2c71d59f2995dacdccChris Lattner if (!match) 806eca7be6b7ebd93682eeaab2c71d59f2995dacdccChris Lattner return false; 807eca7be6b7ebd93682eeaab2c71d59f2995dacdccChris Lattner } 808eca7be6b7ebd93682eeaab2c71d59f2995dacdccChris Lattner 809b1698cf972be75084d760c82389ab5b49a386c31Chris Lattner return true; 810b1698cf972be75084d760c82389ab5b49a386c31Chris Lattner } 811b1698cf972be75084d760c82389ab5b49a386c31Chris Lattner 812d1b3c2dd5bc1f3103bee6137957aa7c5f8f2f0bcSteve Naroff const ObjCObjectPointerType *rhsQID = rhs->getAsObjCQualifiedIdType(); 813b1698cf972be75084d760c82389ab5b49a386c31Chris Lattner assert(rhsQID && "One of the LHS/RHS should be id<x>"); 81414108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff 81514108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff if (const ObjCObjectPointerType *lhsOPT = 81614108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff lhs->getAsObjCInterfacePointerType()) { 81714108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff if (lhsOPT->qual_empty()) { 81814108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff bool match = false; 81914108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff if (ObjCInterfaceDecl *lhsID = lhsOPT->getInterfaceDecl()) { 82014108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff for (ObjCObjectPointerType::qual_iterator I = rhsQID->qual_begin(), 82114108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff E = rhsQID->qual_end(); I != E; ++I) { 82214108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff // when comparing an id<P> on lhs with a static type on rhs, 82314108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff // see if static class implements all of id's protocols, directly or 82414108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff // through its super class and categories. 82514108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff if (ClassImplementsProtocol(*I, lhsID, true)) { 82614108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff match = true; 82714108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff break; 82814108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff } 82914108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff } 83014108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff if (!match) 83114108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff return false; 83214108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff } 83314108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff return true; 83414108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff } 83514108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff // Both the right and left sides have qualifiers. 83614108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff for (ObjCObjectPointerType::qual_iterator I = lhsOPT->qual_begin(), 83714108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff E = lhsOPT->qual_end(); I != E; ++I) { 83814108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff ObjCProtocolDecl *lhsProto = *I; 83914108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff bool match = false; 84014108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff 84114108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff // when comparing an id<P> on lhs with a static type on rhs, 84214108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff // see if static class implements all of id's protocols, directly or 84314108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff // through its super class and categories. 84414108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff for (ObjCObjectPointerType::qual_iterator J = rhsQID->qual_begin(), 84514108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff E = rhsQID->qual_end(); J != E; ++J) { 84614108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff ObjCProtocolDecl *rhsProto = *J; 84714108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff if (ProtocolCompatibleWithProtocol(lhsProto, rhsProto) || 84814108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff (compare && ProtocolCompatibleWithProtocol(rhsProto, lhsProto))) { 84914108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff match = true; 85014108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff break; 85114108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff } 85214108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff } 85314108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff if (!match) 85414108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff return false; 85514108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff } 85614108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff return true; 85714108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff } 85814108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff // FIXME: The code below will be removed when ObjCQualifiedInterfaceType is 85914108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff // removed. 860b1698cf972be75084d760c82389ab5b49a386c31Chris Lattner if (!lhs->isPointerType()) 861b1698cf972be75084d760c82389ab5b49a386c31Chris Lattner return false; 862b1698cf972be75084d760c82389ab5b49a386c31Chris Lattner 863b1698cf972be75084d760c82389ab5b49a386c31Chris Lattner QualType ltype = lhs->getAsPointerType()->getPointeeType(); 864b1698cf972be75084d760c82389ab5b49a386c31Chris Lattner if (const ObjCQualifiedInterfaceType *lhsQI = 865b1698cf972be75084d760c82389ab5b49a386c31Chris Lattner ltype->getAsObjCQualifiedInterfaceType()) { 866d1b3c2dd5bc1f3103bee6137957aa7c5f8f2f0bcSteve Naroff ObjCObjectPointerType::qual_iterator LHSProtoI = lhsQI->qual_begin(); 867d1b3c2dd5bc1f3103bee6137957aa7c5f8f2f0bcSteve Naroff ObjCObjectPointerType::qual_iterator LHSProtoE = lhsQI->qual_end(); 868b1698cf972be75084d760c82389ab5b49a386c31Chris Lattner for (; LHSProtoI != LHSProtoE; ++LHSProtoI) { 869b1698cf972be75084d760c82389ab5b49a386c31Chris Lattner bool match = false; 870b1698cf972be75084d760c82389ab5b49a386c31Chris Lattner ObjCProtocolDecl *lhsProto = *LHSProtoI; 871d1b3c2dd5bc1f3103bee6137957aa7c5f8f2f0bcSteve Naroff for (ObjCObjectPointerType::qual_iterator I = rhsQID->qual_begin(), 872446ee4eb4fc4c705a59365252df7a5c253daafa1Steve Naroff E = rhsQID->qual_end(); I != E; ++I) { 873446ee4eb4fc4c705a59365252df7a5c253daafa1Steve Naroff ObjCProtocolDecl *rhsProto = *I; 874b1698cf972be75084d760c82389ab5b49a386c31Chris Lattner if (ProtocolCompatibleWithProtocol(lhsProto, rhsProto) || 87582b4e768d38c12ceba7db23a96e8d845e00fdeb7Eli Friedman (compare && ProtocolCompatibleWithProtocol(rhsProto, lhsProto))) { 876eca7be6b7ebd93682eeaab2c71d59f2995dacdccChris Lattner match = true; 877eca7be6b7ebd93682eeaab2c71d59f2995dacdccChris Lattner break; 878eca7be6b7ebd93682eeaab2c71d59f2995dacdccChris Lattner } 879eca7be6b7ebd93682eeaab2c71d59f2995dacdccChris Lattner } 880b1698cf972be75084d760c82389ab5b49a386c31Chris Lattner if (!match) 881b1698cf972be75084d760c82389ab5b49a386c31Chris Lattner return false; 882eca7be6b7ebd93682eeaab2c71d59f2995dacdccChris Lattner } 883b1698cf972be75084d760c82389ab5b49a386c31Chris Lattner return true; 884b1698cf972be75084d760c82389ab5b49a386c31Chris Lattner } 885b1698cf972be75084d760c82389ab5b49a386c31Chris Lattner 886b1698cf972be75084d760c82389ab5b49a386c31Chris Lattner return false; 887eca7be6b7ebd93682eeaab2c71d59f2995dacdccChris Lattner} 888eca7be6b7ebd93682eeaab2c71d59f2995dacdccChris Lattner 889