SemaPseudoObject.cpp revision 80e8ea92d6dcaa05165dcb4730485db82dcd4629
13c3b7f90a863af43fa63043d396553ecf205351cJohn McCall//===--- SemaPseudoObject.cpp - Semantic Analysis for Pseudo-Objects ------===// 23c3b7f90a863af43fa63043d396553ecf205351cJohn McCall// 33c3b7f90a863af43fa63043d396553ecf205351cJohn McCall// The LLVM Compiler Infrastructure 43c3b7f90a863af43fa63043d396553ecf205351cJohn McCall// 53c3b7f90a863af43fa63043d396553ecf205351cJohn McCall// This file is distributed under the University of Illinois Open Source 63c3b7f90a863af43fa63043d396553ecf205351cJohn McCall// License. See LICENSE.TXT for details. 73c3b7f90a863af43fa63043d396553ecf205351cJohn McCall// 83c3b7f90a863af43fa63043d396553ecf205351cJohn McCall//===----------------------------------------------------------------------===// 93c3b7f90a863af43fa63043d396553ecf205351cJohn McCall// 103c3b7f90a863af43fa63043d396553ecf205351cJohn McCall// This file implements semantic analysis for expressions involving 113c3b7f90a863af43fa63043d396553ecf205351cJohn McCall// pseudo-object references. Pseudo-objects are conceptual objects 123c3b7f90a863af43fa63043d396553ecf205351cJohn McCall// whose storage is entirely abstract and all accesses to which are 133c3b7f90a863af43fa63043d396553ecf205351cJohn McCall// translated through some sort of abstraction barrier. 143c3b7f90a863af43fa63043d396553ecf205351cJohn McCall// 153c3b7f90a863af43fa63043d396553ecf205351cJohn McCall// For example, Objective-C objects can have "properties", either 163c3b7f90a863af43fa63043d396553ecf205351cJohn McCall// declared or undeclared. A property may be accessed by writing 173c3b7f90a863af43fa63043d396553ecf205351cJohn McCall// expr.prop 183c3b7f90a863af43fa63043d396553ecf205351cJohn McCall// where 'expr' is an r-value of Objective-C pointer type and 'prop' 193c3b7f90a863af43fa63043d396553ecf205351cJohn McCall// is the name of the property. If this expression is used in a context 203c3b7f90a863af43fa63043d396553ecf205351cJohn McCall// needing an r-value, it is treated as if it were a message-send 213c3b7f90a863af43fa63043d396553ecf205351cJohn McCall// of the associated 'getter' selector, typically: 223c3b7f90a863af43fa63043d396553ecf205351cJohn McCall// [expr prop] 233c3b7f90a863af43fa63043d396553ecf205351cJohn McCall// If it is used as the LHS of a simple assignment, it is treated 243c3b7f90a863af43fa63043d396553ecf205351cJohn McCall// as a message-send of the associated 'setter' selector, typically: 253c3b7f90a863af43fa63043d396553ecf205351cJohn McCall// [expr setProp: RHS] 263c3b7f90a863af43fa63043d396553ecf205351cJohn McCall// If it is used as the LHS of a compound assignment, or the operand 273c3b7f90a863af43fa63043d396553ecf205351cJohn McCall// of a unary increment or decrement, both are required; for example, 283c3b7f90a863af43fa63043d396553ecf205351cJohn McCall// 'expr.prop *= 100' would be translated to: 293c3b7f90a863af43fa63043d396553ecf205351cJohn McCall// [expr setProp: [expr prop] * 100] 303c3b7f90a863af43fa63043d396553ecf205351cJohn McCall// 313c3b7f90a863af43fa63043d396553ecf205351cJohn McCall//===----------------------------------------------------------------------===// 323c3b7f90a863af43fa63043d396553ecf205351cJohn McCall 333c3b7f90a863af43fa63043d396553ecf205351cJohn McCall#include "clang/Sema/SemaInternal.h" 343c3b7f90a863af43fa63043d396553ecf205351cJohn McCall#include "clang/AST/ExprObjC.h" 353f6f51e28231f65de9c2dd150a2d757b2162cfa3Jordan Rose#include "clang/Basic/CharInfo.h" 363c3b7f90a863af43fa63043d396553ecf205351cJohn McCall#include "clang/Lex/Preprocessor.h" 3755fc873017f10f6f566b182b70f6fc22aefa3464Chandler Carruth#include "clang/Sema/Initialization.h" 3855fc873017f10f6f566b182b70f6fc22aefa3464Chandler Carruth#include "clang/Sema/ScopeInfo.h" 39b5b155cb8bd2460693572bab5ce14dabf1a27d2fFariborz Jahanian#include "llvm/ADT/SmallString.h" 403c3b7f90a863af43fa63043d396553ecf205351cJohn McCall 413c3b7f90a863af43fa63043d396553ecf205351cJohn McCallusing namespace clang; 423c3b7f90a863af43fa63043d396553ecf205351cJohn McCallusing namespace sema; 433c3b7f90a863af43fa63043d396553ecf205351cJohn McCall 444b9c2d235fb9449e249d74f48ecfec601650de93John McCallnamespace { 454b9c2d235fb9449e249d74f48ecfec601650de93John McCall // Basically just a very focused copy of TreeTransform. 464b9c2d235fb9449e249d74f48ecfec601650de93John McCall template <class T> struct Rebuilder { 474b9c2d235fb9449e249d74f48ecfec601650de93John McCall Sema &S; 484b9c2d235fb9449e249d74f48ecfec601650de93John McCall Rebuilder(Sema &S) : S(S) {} 494b9c2d235fb9449e249d74f48ecfec601650de93John McCall 504b9c2d235fb9449e249d74f48ecfec601650de93John McCall T &getDerived() { return static_cast<T&>(*this); } 514b9c2d235fb9449e249d74f48ecfec601650de93John McCall 524b9c2d235fb9449e249d74f48ecfec601650de93John McCall Expr *rebuild(Expr *e) { 534b9c2d235fb9449e249d74f48ecfec601650de93John McCall // Fast path: nothing to look through. 544b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (typename T::specific_type *specific 554b9c2d235fb9449e249d74f48ecfec601650de93John McCall = dyn_cast<typename T::specific_type>(e)) 564b9c2d235fb9449e249d74f48ecfec601650de93John McCall return getDerived().rebuildSpecific(specific); 574b9c2d235fb9449e249d74f48ecfec601650de93John McCall 584b9c2d235fb9449e249d74f48ecfec601650de93John McCall // Otherwise, we should look through and rebuild anything that 594b9c2d235fb9449e249d74f48ecfec601650de93John McCall // IgnoreParens would. 604b9c2d235fb9449e249d74f48ecfec601650de93John McCall 614b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (ParenExpr *parens = dyn_cast<ParenExpr>(e)) { 624b9c2d235fb9449e249d74f48ecfec601650de93John McCall e = rebuild(parens->getSubExpr()); 634b9c2d235fb9449e249d74f48ecfec601650de93John McCall return new (S.Context) ParenExpr(parens->getLParen(), 644b9c2d235fb9449e249d74f48ecfec601650de93John McCall parens->getRParen(), 654b9c2d235fb9449e249d74f48ecfec601650de93John McCall e); 664b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 674b9c2d235fb9449e249d74f48ecfec601650de93John McCall 684b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (UnaryOperator *uop = dyn_cast<UnaryOperator>(e)) { 694b9c2d235fb9449e249d74f48ecfec601650de93John McCall assert(uop->getOpcode() == UO_Extension); 704b9c2d235fb9449e249d74f48ecfec601650de93John McCall e = rebuild(uop->getSubExpr()); 714b9c2d235fb9449e249d74f48ecfec601650de93John McCall return new (S.Context) UnaryOperator(e, uop->getOpcode(), 724b9c2d235fb9449e249d74f48ecfec601650de93John McCall uop->getType(), 734b9c2d235fb9449e249d74f48ecfec601650de93John McCall uop->getValueKind(), 744b9c2d235fb9449e249d74f48ecfec601650de93John McCall uop->getObjectKind(), 754b9c2d235fb9449e249d74f48ecfec601650de93John McCall uop->getOperatorLoc()); 764b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 774b9c2d235fb9449e249d74f48ecfec601650de93John McCall 784b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (GenericSelectionExpr *gse = dyn_cast<GenericSelectionExpr>(e)) { 794b9c2d235fb9449e249d74f48ecfec601650de93John McCall assert(!gse->isResultDependent()); 804b9c2d235fb9449e249d74f48ecfec601650de93John McCall unsigned resultIndex = gse->getResultIndex(); 814b9c2d235fb9449e249d74f48ecfec601650de93John McCall unsigned numAssocs = gse->getNumAssocs(); 824b9c2d235fb9449e249d74f48ecfec601650de93John McCall 834b9c2d235fb9449e249d74f48ecfec601650de93John McCall SmallVector<Expr*, 8> assocs(numAssocs); 844b9c2d235fb9449e249d74f48ecfec601650de93John McCall SmallVector<TypeSourceInfo*, 8> assocTypes(numAssocs); 854b9c2d235fb9449e249d74f48ecfec601650de93John McCall 864b9c2d235fb9449e249d74f48ecfec601650de93John McCall for (unsigned i = 0; i != numAssocs; ++i) { 874b9c2d235fb9449e249d74f48ecfec601650de93John McCall Expr *assoc = gse->getAssocExpr(i); 884b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (i == resultIndex) assoc = rebuild(assoc); 894b9c2d235fb9449e249d74f48ecfec601650de93John McCall assocs[i] = assoc; 904b9c2d235fb9449e249d74f48ecfec601650de93John McCall assocTypes[i] = gse->getAssocTypeSourceInfo(i); 914b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 924b9c2d235fb9449e249d74f48ecfec601650de93John McCall 934b9c2d235fb9449e249d74f48ecfec601650de93John McCall return new (S.Context) GenericSelectionExpr(S.Context, 944b9c2d235fb9449e249d74f48ecfec601650de93John McCall gse->getGenericLoc(), 954b9c2d235fb9449e249d74f48ecfec601650de93John McCall gse->getControllingExpr(), 963b6bef9a213249c6ab6d67c07b1ac6380961be3eBenjamin Kramer assocTypes, 973b6bef9a213249c6ab6d67c07b1ac6380961be3eBenjamin Kramer assocs, 984b9c2d235fb9449e249d74f48ecfec601650de93John McCall gse->getDefaultLoc(), 994b9c2d235fb9449e249d74f48ecfec601650de93John McCall gse->getRParenLoc(), 1004b9c2d235fb9449e249d74f48ecfec601650de93John McCall gse->containsUnexpandedParameterPack(), 1014b9c2d235fb9449e249d74f48ecfec601650de93John McCall resultIndex); 1024b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 1034b9c2d235fb9449e249d74f48ecfec601650de93John McCall 1044b9c2d235fb9449e249d74f48ecfec601650de93John McCall llvm_unreachable("bad expression to rebuild!"); 1054b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 1064b9c2d235fb9449e249d74f48ecfec601650de93John McCall }; 1074b9c2d235fb9449e249d74f48ecfec601650de93John McCall 1084b9c2d235fb9449e249d74f48ecfec601650de93John McCall struct ObjCPropertyRefRebuilder : Rebuilder<ObjCPropertyRefRebuilder> { 1094b9c2d235fb9449e249d74f48ecfec601650de93John McCall Expr *NewBase; 1104b9c2d235fb9449e249d74f48ecfec601650de93John McCall ObjCPropertyRefRebuilder(Sema &S, Expr *newBase) 111acf9e82fd34c0a125bf2aa8be1ab868082a7f06aBenjamin Kramer : Rebuilder<ObjCPropertyRefRebuilder>(S), NewBase(newBase) {} 1124b9c2d235fb9449e249d74f48ecfec601650de93John McCall 1134b9c2d235fb9449e249d74f48ecfec601650de93John McCall typedef ObjCPropertyRefExpr specific_type; 1144b9c2d235fb9449e249d74f48ecfec601650de93John McCall Expr *rebuildSpecific(ObjCPropertyRefExpr *refExpr) { 1154b9c2d235fb9449e249d74f48ecfec601650de93John McCall // Fortunately, the constraint that we're rebuilding something 1164b9c2d235fb9449e249d74f48ecfec601650de93John McCall // with a base limits the number of cases here. 117a70779f6b9a8135c3459bdeb1f0197b82ea0cb2aEli Friedman assert(refExpr->isObjectReceiver()); 1184b9c2d235fb9449e249d74f48ecfec601650de93John McCall 1194b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (refExpr->isExplicitProperty()) { 1204b9c2d235fb9449e249d74f48ecfec601650de93John McCall return new (S.Context) 1214b9c2d235fb9449e249d74f48ecfec601650de93John McCall ObjCPropertyRefExpr(refExpr->getExplicitProperty(), 1224b9c2d235fb9449e249d74f48ecfec601650de93John McCall refExpr->getType(), refExpr->getValueKind(), 1234b9c2d235fb9449e249d74f48ecfec601650de93John McCall refExpr->getObjectKind(), refExpr->getLocation(), 1244b9c2d235fb9449e249d74f48ecfec601650de93John McCall NewBase); 1254b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 1264b9c2d235fb9449e249d74f48ecfec601650de93John McCall return new (S.Context) 1274b9c2d235fb9449e249d74f48ecfec601650de93John McCall ObjCPropertyRefExpr(refExpr->getImplicitPropertyGetter(), 1284b9c2d235fb9449e249d74f48ecfec601650de93John McCall refExpr->getImplicitPropertySetter(), 1294b9c2d235fb9449e249d74f48ecfec601650de93John McCall refExpr->getType(), refExpr->getValueKind(), 1304b9c2d235fb9449e249d74f48ecfec601650de93John McCall refExpr->getObjectKind(),refExpr->getLocation(), 1314b9c2d235fb9449e249d74f48ecfec601650de93John McCall NewBase); 1324b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 1334b9c2d235fb9449e249d74f48ecfec601650de93John McCall }; 1344b9c2d235fb9449e249d74f48ecfec601650de93John McCall 135ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek struct ObjCSubscriptRefRebuilder : Rebuilder<ObjCSubscriptRefRebuilder> { 136ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Expr *NewBase; 137ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Expr *NewKeyExpr; 138ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ObjCSubscriptRefRebuilder(Sema &S, Expr *newBase, Expr *newKeyExpr) 139ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek : Rebuilder<ObjCSubscriptRefRebuilder>(S), 140ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek NewBase(newBase), NewKeyExpr(newKeyExpr) {} 141ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 142ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek typedef ObjCSubscriptRefExpr specific_type; 143ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Expr *rebuildSpecific(ObjCSubscriptRefExpr *refExpr) { 144ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek assert(refExpr->getBaseExpr()); 145ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek assert(refExpr->getKeyExpr()); 146ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 147ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return new (S.Context) 148ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ObjCSubscriptRefExpr(NewBase, 149ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek NewKeyExpr, 150ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek refExpr->getType(), refExpr->getValueKind(), 151ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek refExpr->getObjectKind(),refExpr->getAtIndexMethodDecl(), 152ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek refExpr->setAtIndexMethodDecl(), 153ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek refExpr->getRBracket()); 154ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 155ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek }; 15676da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall 15776da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall struct MSPropertyRefRebuilder : Rebuilder<MSPropertyRefRebuilder> { 15876da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall Expr *NewBase; 15976da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall MSPropertyRefRebuilder(Sema &S, Expr *newBase) 16076da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall : Rebuilder<MSPropertyRefRebuilder>(S), NewBase(newBase) {} 16176da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall 16276da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall typedef MSPropertyRefExpr specific_type; 16376da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall Expr *rebuildSpecific(MSPropertyRefExpr *refExpr) { 16476da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall assert(refExpr->getBaseExpr()); 16576da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall 16676da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall return new (S.Context) 16776da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall MSPropertyRefExpr(NewBase, refExpr->getPropertyDecl(), 16876da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall refExpr->isArrow(), refExpr->getType(), 16976da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall refExpr->getValueKind(), refExpr->getQualifierLoc(), 17076da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall refExpr->getMemberLoc()); 17176da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall } 17276da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall }; 173ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 1744b9c2d235fb9449e249d74f48ecfec601650de93John McCall class PseudoOpBuilder { 1754b9c2d235fb9449e249d74f48ecfec601650de93John McCall public: 1764b9c2d235fb9449e249d74f48ecfec601650de93John McCall Sema &S; 1774b9c2d235fb9449e249d74f48ecfec601650de93John McCall unsigned ResultIndex; 1784b9c2d235fb9449e249d74f48ecfec601650de93John McCall SourceLocation GenericLoc; 1794b9c2d235fb9449e249d74f48ecfec601650de93John McCall SmallVector<Expr *, 4> Semantics; 1804b9c2d235fb9449e249d74f48ecfec601650de93John McCall 1814b9c2d235fb9449e249d74f48ecfec601650de93John McCall PseudoOpBuilder(Sema &S, SourceLocation genericLoc) 1824b9c2d235fb9449e249d74f48ecfec601650de93John McCall : S(S), ResultIndex(PseudoObjectExpr::NoResult), 1834b9c2d235fb9449e249d74f48ecfec601650de93John McCall GenericLoc(genericLoc) {} 1844b9c2d235fb9449e249d74f48ecfec601650de93John McCall 1851aa1721f14f2162811f5393dbd84e01eadc2c963Matt Beaumont-Gay virtual ~PseudoOpBuilder() {} 1861aa1721f14f2162811f5393dbd84e01eadc2c963Matt Beaumont-Gay 1874b9c2d235fb9449e249d74f48ecfec601650de93John McCall /// Add a normal semantic expression. 1884b9c2d235fb9449e249d74f48ecfec601650de93John McCall void addSemanticExpr(Expr *semantic) { 1894b9c2d235fb9449e249d74f48ecfec601650de93John McCall Semantics.push_back(semantic); 1904b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 1914b9c2d235fb9449e249d74f48ecfec601650de93John McCall 1924b9c2d235fb9449e249d74f48ecfec601650de93John McCall /// Add the 'result' semantic expression. 1934b9c2d235fb9449e249d74f48ecfec601650de93John McCall void addResultSemanticExpr(Expr *resultExpr) { 1944b9c2d235fb9449e249d74f48ecfec601650de93John McCall assert(ResultIndex == PseudoObjectExpr::NoResult); 1954b9c2d235fb9449e249d74f48ecfec601650de93John McCall ResultIndex = Semantics.size(); 1964b9c2d235fb9449e249d74f48ecfec601650de93John McCall Semantics.push_back(resultExpr); 1974b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 1984b9c2d235fb9449e249d74f48ecfec601650de93John McCall 1994b9c2d235fb9449e249d74f48ecfec601650de93John McCall ExprResult buildRValueOperation(Expr *op); 2004b9c2d235fb9449e249d74f48ecfec601650de93John McCall ExprResult buildAssignmentOperation(Scope *Sc, 2014b9c2d235fb9449e249d74f48ecfec601650de93John McCall SourceLocation opLoc, 2024b9c2d235fb9449e249d74f48ecfec601650de93John McCall BinaryOperatorKind opcode, 2034b9c2d235fb9449e249d74f48ecfec601650de93John McCall Expr *LHS, Expr *RHS); 2044b9c2d235fb9449e249d74f48ecfec601650de93John McCall ExprResult buildIncDecOperation(Scope *Sc, SourceLocation opLoc, 2054b9c2d235fb9449e249d74f48ecfec601650de93John McCall UnaryOperatorKind opcode, 2064b9c2d235fb9449e249d74f48ecfec601650de93John McCall Expr *op); 2074b9c2d235fb9449e249d74f48ecfec601650de93John McCall 20858b6bdcdeb683a3504f2248a409e1f4e85876ceeJordan Rose virtual ExprResult complete(Expr *syntacticForm); 2094b9c2d235fb9449e249d74f48ecfec601650de93John McCall 2104b9c2d235fb9449e249d74f48ecfec601650de93John McCall OpaqueValueExpr *capture(Expr *op); 2114b9c2d235fb9449e249d74f48ecfec601650de93John McCall OpaqueValueExpr *captureValueAsResult(Expr *op); 2124b9c2d235fb9449e249d74f48ecfec601650de93John McCall 2134b9c2d235fb9449e249d74f48ecfec601650de93John McCall void setResultToLastSemantic() { 2144b9c2d235fb9449e249d74f48ecfec601650de93John McCall assert(ResultIndex == PseudoObjectExpr::NoResult); 2154b9c2d235fb9449e249d74f48ecfec601650de93John McCall ResultIndex = Semantics.size() - 1; 2164b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 2174b9c2d235fb9449e249d74f48ecfec601650de93John McCall 2184b9c2d235fb9449e249d74f48ecfec601650de93John McCall /// Return true if assignments have a non-void result. 21925f071eedf5d20faf9e1614d5ff5dc39b6de5041Eli Friedman bool CanCaptureValueOfType(QualType ty) { 22025f071eedf5d20faf9e1614d5ff5dc39b6de5041Eli Friedman assert(!ty->isIncompleteType()); 22125f071eedf5d20faf9e1614d5ff5dc39b6de5041Eli Friedman assert(!ty->isDependentType()); 22225f071eedf5d20faf9e1614d5ff5dc39b6de5041Eli Friedman 22325f071eedf5d20faf9e1614d5ff5dc39b6de5041Eli Friedman if (const CXXRecordDecl *ClassDecl = ty->getAsCXXRecordDecl()) 22425f071eedf5d20faf9e1614d5ff5dc39b6de5041Eli Friedman return ClassDecl->isTriviallyCopyable(); 22525f071eedf5d20faf9e1614d5ff5dc39b6de5041Eli Friedman return true; 22625f071eedf5d20faf9e1614d5ff5dc39b6de5041Eli Friedman } 2274b9c2d235fb9449e249d74f48ecfec601650de93John McCall 2284b9c2d235fb9449e249d74f48ecfec601650de93John McCall virtual Expr *rebuildAndCaptureObject(Expr *) = 0; 2294b9c2d235fb9449e249d74f48ecfec601650de93John McCall virtual ExprResult buildGet() = 0; 2304b9c2d235fb9449e249d74f48ecfec601650de93John McCall virtual ExprResult buildSet(Expr *, SourceLocation, 2314b9c2d235fb9449e249d74f48ecfec601650de93John McCall bool captureSetValueAsResult) = 0; 2324b9c2d235fb9449e249d74f48ecfec601650de93John McCall }; 2334b9c2d235fb9449e249d74f48ecfec601650de93John McCall 234e23fb90712233bdfa04387e48b54a7168e23cb3eDmitri Gribenko /// A PseudoOpBuilder for Objective-C \@properties. 2354b9c2d235fb9449e249d74f48ecfec601650de93John McCall class ObjCPropertyOpBuilder : public PseudoOpBuilder { 2364b9c2d235fb9449e249d74f48ecfec601650de93John McCall ObjCPropertyRefExpr *RefExpr; 237b085d898bdfe35097eba45f4072b0f6865f561dcArgyrios Kyrtzidis ObjCPropertyRefExpr *SyntacticRefExpr; 2384b9c2d235fb9449e249d74f48ecfec601650de93John McCall OpaqueValueExpr *InstanceReceiver; 2394b9c2d235fb9449e249d74f48ecfec601650de93John McCall ObjCMethodDecl *Getter; 2404b9c2d235fb9449e249d74f48ecfec601650de93John McCall 2414b9c2d235fb9449e249d74f48ecfec601650de93John McCall ObjCMethodDecl *Setter; 2424b9c2d235fb9449e249d74f48ecfec601650de93John McCall Selector SetterSelector; 243a2c91e75c944e3599fb108db600f91c47c8b4342Fariborz Jahanian Selector GetterSelector; 2444b9c2d235fb9449e249d74f48ecfec601650de93John McCall 2454b9c2d235fb9449e249d74f48ecfec601650de93John McCall public: 2464b9c2d235fb9449e249d74f48ecfec601650de93John McCall ObjCPropertyOpBuilder(Sema &S, ObjCPropertyRefExpr *refExpr) : 2474b9c2d235fb9449e249d74f48ecfec601650de93John McCall PseudoOpBuilder(S, refExpr->getLocation()), RefExpr(refExpr), 248b085d898bdfe35097eba45f4072b0f6865f561dcArgyrios Kyrtzidis SyntacticRefExpr(0), InstanceReceiver(0), Getter(0), Setter(0) { 2494b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 2504b9c2d235fb9449e249d74f48ecfec601650de93John McCall 2514b9c2d235fb9449e249d74f48ecfec601650de93John McCall ExprResult buildRValueOperation(Expr *op); 2524b9c2d235fb9449e249d74f48ecfec601650de93John McCall ExprResult buildAssignmentOperation(Scope *Sc, 2534b9c2d235fb9449e249d74f48ecfec601650de93John McCall SourceLocation opLoc, 2544b9c2d235fb9449e249d74f48ecfec601650de93John McCall BinaryOperatorKind opcode, 2554b9c2d235fb9449e249d74f48ecfec601650de93John McCall Expr *LHS, Expr *RHS); 2564b9c2d235fb9449e249d74f48ecfec601650de93John McCall ExprResult buildIncDecOperation(Scope *Sc, SourceLocation opLoc, 2574b9c2d235fb9449e249d74f48ecfec601650de93John McCall UnaryOperatorKind opcode, 2584b9c2d235fb9449e249d74f48ecfec601650de93John McCall Expr *op); 2594b9c2d235fb9449e249d74f48ecfec601650de93John McCall 2604b9c2d235fb9449e249d74f48ecfec601650de93John McCall bool tryBuildGetOfReference(Expr *op, ExprResult &result); 261b5b155cb8bd2460693572bab5ce14dabf1a27d2fFariborz Jahanian bool findSetter(bool warn=true); 2624b9c2d235fb9449e249d74f48ecfec601650de93John McCall bool findGetter(); 2634b9c2d235fb9449e249d74f48ecfec601650de93John McCall 2644b9c2d235fb9449e249d74f48ecfec601650de93John McCall Expr *rebuildAndCaptureObject(Expr *syntacticBase); 2654b9c2d235fb9449e249d74f48ecfec601650de93John McCall ExprResult buildGet(); 2664b9c2d235fb9449e249d74f48ecfec601650de93John McCall ExprResult buildSet(Expr *op, SourceLocation, bool); 26758b6bdcdeb683a3504f2248a409e1f4e85876ceeJordan Rose ExprResult complete(Expr *SyntacticForm); 26858b6bdcdeb683a3504f2248a409e1f4e85876ceeJordan Rose 26958b6bdcdeb683a3504f2248a409e1f4e85876ceeJordan Rose bool isWeakProperty() const; 2704b9c2d235fb9449e249d74f48ecfec601650de93John McCall }; 271ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 272ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek /// A PseudoOpBuilder for Objective-C array/dictionary indexing. 273ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek class ObjCSubscriptOpBuilder : public PseudoOpBuilder { 274ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ObjCSubscriptRefExpr *RefExpr; 275ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek OpaqueValueExpr *InstanceBase; 276ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek OpaqueValueExpr *InstanceKey; 277ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ObjCMethodDecl *AtIndexGetter; 278ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Selector AtIndexGetterSelector; 279ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 280ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ObjCMethodDecl *AtIndexSetter; 281ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Selector AtIndexSetterSelector; 282ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 283ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek public: 284ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ObjCSubscriptOpBuilder(Sema &S, ObjCSubscriptRefExpr *refExpr) : 285ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek PseudoOpBuilder(S, refExpr->getSourceRange().getBegin()), 286ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek RefExpr(refExpr), 287ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek InstanceBase(0), InstanceKey(0), 288ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek AtIndexGetter(0), AtIndexSetter(0) { } 289ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 290ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ExprResult buildRValueOperation(Expr *op); 291ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ExprResult buildAssignmentOperation(Scope *Sc, 292ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek SourceLocation opLoc, 293ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek BinaryOperatorKind opcode, 294ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Expr *LHS, Expr *RHS); 295ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Expr *rebuildAndCaptureObject(Expr *syntacticBase); 296ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 297ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek bool findAtIndexGetter(); 298ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek bool findAtIndexSetter(); 299ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 300ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ExprResult buildGet(); 301ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ExprResult buildSet(Expr *op, SourceLocation, bool); 302ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek }; 303ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 30476da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall class MSPropertyOpBuilder : public PseudoOpBuilder { 30576da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall MSPropertyRefExpr *RefExpr; 30676da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall 30776da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall public: 30876da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall MSPropertyOpBuilder(Sema &S, MSPropertyRefExpr *refExpr) : 30976da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall PseudoOpBuilder(S, refExpr->getSourceRange().getBegin()), 31076da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall RefExpr(refExpr) {} 31176da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall 31276da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall Expr *rebuildAndCaptureObject(Expr *); 31376da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall ExprResult buildGet(); 31476da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall ExprResult buildSet(Expr *op, SourceLocation, bool); 31576da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall }; 3164b9c2d235fb9449e249d74f48ecfec601650de93John McCall} 3174b9c2d235fb9449e249d74f48ecfec601650de93John McCall 3184b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// Capture the given expression in an OpaqueValueExpr. 3194b9c2d235fb9449e249d74f48ecfec601650de93John McCallOpaqueValueExpr *PseudoOpBuilder::capture(Expr *e) { 3204b9c2d235fb9449e249d74f48ecfec601650de93John McCall // Make a new OVE whose source is the given expression. 3214b9c2d235fb9449e249d74f48ecfec601650de93John McCall OpaqueValueExpr *captured = 3224b9c2d235fb9449e249d74f48ecfec601650de93John McCall new (S.Context) OpaqueValueExpr(GenericLoc, e->getType(), 32397df54e0c075bc8d6a869597e771dad0c11a2180Douglas Gregor e->getValueKind(), e->getObjectKind(), 32497df54e0c075bc8d6a869597e771dad0c11a2180Douglas Gregor e); 3254b9c2d235fb9449e249d74f48ecfec601650de93John McCall 3264b9c2d235fb9449e249d74f48ecfec601650de93John McCall // Make sure we bind that in the semantics. 3274b9c2d235fb9449e249d74f48ecfec601650de93John McCall addSemanticExpr(captured); 3284b9c2d235fb9449e249d74f48ecfec601650de93John McCall return captured; 3294b9c2d235fb9449e249d74f48ecfec601650de93John McCall} 3304b9c2d235fb9449e249d74f48ecfec601650de93John McCall 3314b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// Capture the given expression as the result of this pseudo-object 3324b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// operation. This routine is safe against expressions which may 3334b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// already be captured. 3344b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// 33570517ca5c07c4b41ff8662b94ee22047b0299f8cDmitri Gribenko/// \returns the captured expression, which will be the 3364b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// same as the input if the input was already captured 3374b9c2d235fb9449e249d74f48ecfec601650de93John McCallOpaqueValueExpr *PseudoOpBuilder::captureValueAsResult(Expr *e) { 3384b9c2d235fb9449e249d74f48ecfec601650de93John McCall assert(ResultIndex == PseudoObjectExpr::NoResult); 3394b9c2d235fb9449e249d74f48ecfec601650de93John McCall 3404b9c2d235fb9449e249d74f48ecfec601650de93John McCall // If the expression hasn't already been captured, just capture it 3414b9c2d235fb9449e249d74f48ecfec601650de93John McCall // and set the new semantic 3424b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (!isa<OpaqueValueExpr>(e)) { 3434b9c2d235fb9449e249d74f48ecfec601650de93John McCall OpaqueValueExpr *cap = capture(e); 3444b9c2d235fb9449e249d74f48ecfec601650de93John McCall setResultToLastSemantic(); 3454b9c2d235fb9449e249d74f48ecfec601650de93John McCall return cap; 3464b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 3474b9c2d235fb9449e249d74f48ecfec601650de93John McCall 3484b9c2d235fb9449e249d74f48ecfec601650de93John McCall // Otherwise, it must already be one of our semantic expressions; 3494b9c2d235fb9449e249d74f48ecfec601650de93John McCall // set ResultIndex to its index. 3504b9c2d235fb9449e249d74f48ecfec601650de93John McCall unsigned index = 0; 3514b9c2d235fb9449e249d74f48ecfec601650de93John McCall for (;; ++index) { 3524b9c2d235fb9449e249d74f48ecfec601650de93John McCall assert(index < Semantics.size() && 3534b9c2d235fb9449e249d74f48ecfec601650de93John McCall "captured expression not found in semantics!"); 3544b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (e == Semantics[index]) break; 3554b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 3564b9c2d235fb9449e249d74f48ecfec601650de93John McCall ResultIndex = index; 3574b9c2d235fb9449e249d74f48ecfec601650de93John McCall return cast<OpaqueValueExpr>(e); 3584b9c2d235fb9449e249d74f48ecfec601650de93John McCall} 3594b9c2d235fb9449e249d74f48ecfec601650de93John McCall 3604b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// The routine which creates the final PseudoObjectExpr. 3614b9c2d235fb9449e249d74f48ecfec601650de93John McCallExprResult PseudoOpBuilder::complete(Expr *syntactic) { 3624b9c2d235fb9449e249d74f48ecfec601650de93John McCall return PseudoObjectExpr::Create(S.Context, syntactic, 3634b9c2d235fb9449e249d74f48ecfec601650de93John McCall Semantics, ResultIndex); 3644b9c2d235fb9449e249d74f48ecfec601650de93John McCall} 3654b9c2d235fb9449e249d74f48ecfec601650de93John McCall 3664b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// The main skeleton for building an r-value operation. 3674b9c2d235fb9449e249d74f48ecfec601650de93John McCallExprResult PseudoOpBuilder::buildRValueOperation(Expr *op) { 3684b9c2d235fb9449e249d74f48ecfec601650de93John McCall Expr *syntacticBase = rebuildAndCaptureObject(op); 3694b9c2d235fb9449e249d74f48ecfec601650de93John McCall 3704b9c2d235fb9449e249d74f48ecfec601650de93John McCall ExprResult getExpr = buildGet(); 3714b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (getExpr.isInvalid()) return ExprError(); 3724b9c2d235fb9449e249d74f48ecfec601650de93John McCall addResultSemanticExpr(getExpr.take()); 3734b9c2d235fb9449e249d74f48ecfec601650de93John McCall 3744b9c2d235fb9449e249d74f48ecfec601650de93John McCall return complete(syntacticBase); 3754b9c2d235fb9449e249d74f48ecfec601650de93John McCall} 3764b9c2d235fb9449e249d74f48ecfec601650de93John McCall 3774b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// The basic skeleton for building a simple or compound 3784b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// assignment operation. 3794b9c2d235fb9449e249d74f48ecfec601650de93John McCallExprResult 3804b9c2d235fb9449e249d74f48ecfec601650de93John McCallPseudoOpBuilder::buildAssignmentOperation(Scope *Sc, SourceLocation opcLoc, 3814b9c2d235fb9449e249d74f48ecfec601650de93John McCall BinaryOperatorKind opcode, 3824b9c2d235fb9449e249d74f48ecfec601650de93John McCall Expr *LHS, Expr *RHS) { 3834b9c2d235fb9449e249d74f48ecfec601650de93John McCall assert(BinaryOperator::isAssignmentOp(opcode)); 3844b9c2d235fb9449e249d74f48ecfec601650de93John McCall 3854b9c2d235fb9449e249d74f48ecfec601650de93John McCall Expr *syntacticLHS = rebuildAndCaptureObject(LHS); 3864b9c2d235fb9449e249d74f48ecfec601650de93John McCall OpaqueValueExpr *capturedRHS = capture(RHS); 3874b9c2d235fb9449e249d74f48ecfec601650de93John McCall 3884b9c2d235fb9449e249d74f48ecfec601650de93John McCall Expr *syntactic; 3894b9c2d235fb9449e249d74f48ecfec601650de93John McCall 3904b9c2d235fb9449e249d74f48ecfec601650de93John McCall ExprResult result; 3914b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (opcode == BO_Assign) { 3924b9c2d235fb9449e249d74f48ecfec601650de93John McCall result = capturedRHS; 3934b9c2d235fb9449e249d74f48ecfec601650de93John McCall syntactic = new (S.Context) BinaryOperator(syntacticLHS, capturedRHS, 3944b9c2d235fb9449e249d74f48ecfec601650de93John McCall opcode, capturedRHS->getType(), 3954b9c2d235fb9449e249d74f48ecfec601650de93John McCall capturedRHS->getValueKind(), 396be9af1288881110e406b87914162eaa59f1e5918Lang Hames OK_Ordinary, opcLoc, false); 3974b9c2d235fb9449e249d74f48ecfec601650de93John McCall } else { 3984b9c2d235fb9449e249d74f48ecfec601650de93John McCall ExprResult opLHS = buildGet(); 3994b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (opLHS.isInvalid()) return ExprError(); 4004b9c2d235fb9449e249d74f48ecfec601650de93John McCall 4014b9c2d235fb9449e249d74f48ecfec601650de93John McCall // Build an ordinary, non-compound operation. 4024b9c2d235fb9449e249d74f48ecfec601650de93John McCall BinaryOperatorKind nonCompound = 4034b9c2d235fb9449e249d74f48ecfec601650de93John McCall BinaryOperator::getOpForCompoundAssignment(opcode); 4044b9c2d235fb9449e249d74f48ecfec601650de93John McCall result = S.BuildBinOp(Sc, opcLoc, nonCompound, 4054b9c2d235fb9449e249d74f48ecfec601650de93John McCall opLHS.take(), capturedRHS); 4064b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (result.isInvalid()) return ExprError(); 4074b9c2d235fb9449e249d74f48ecfec601650de93John McCall 4084b9c2d235fb9449e249d74f48ecfec601650de93John McCall syntactic = 4094b9c2d235fb9449e249d74f48ecfec601650de93John McCall new (S.Context) CompoundAssignOperator(syntacticLHS, capturedRHS, opcode, 4104b9c2d235fb9449e249d74f48ecfec601650de93John McCall result.get()->getType(), 4114b9c2d235fb9449e249d74f48ecfec601650de93John McCall result.get()->getValueKind(), 4124b9c2d235fb9449e249d74f48ecfec601650de93John McCall OK_Ordinary, 4134b9c2d235fb9449e249d74f48ecfec601650de93John McCall opLHS.get()->getType(), 4144b9c2d235fb9449e249d74f48ecfec601650de93John McCall result.get()->getType(), 415be9af1288881110e406b87914162eaa59f1e5918Lang Hames opcLoc, false); 4164b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 4174b9c2d235fb9449e249d74f48ecfec601650de93John McCall 4184b9c2d235fb9449e249d74f48ecfec601650de93John McCall // The result of the assignment, if not void, is the value set into 4194b9c2d235fb9449e249d74f48ecfec601650de93John McCall // the l-value. 42025f071eedf5d20faf9e1614d5ff5dc39b6de5041Eli Friedman result = buildSet(result.take(), opcLoc, /*captureSetValueAsResult*/ true); 4214b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (result.isInvalid()) return ExprError(); 4224b9c2d235fb9449e249d74f48ecfec601650de93John McCall addSemanticExpr(result.take()); 4234b9c2d235fb9449e249d74f48ecfec601650de93John McCall 4244b9c2d235fb9449e249d74f48ecfec601650de93John McCall return complete(syntactic); 4254b9c2d235fb9449e249d74f48ecfec601650de93John McCall} 4264b9c2d235fb9449e249d74f48ecfec601650de93John McCall 4274b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// The basic skeleton for building an increment or decrement 4284b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// operation. 4294b9c2d235fb9449e249d74f48ecfec601650de93John McCallExprResult 4304b9c2d235fb9449e249d74f48ecfec601650de93John McCallPseudoOpBuilder::buildIncDecOperation(Scope *Sc, SourceLocation opcLoc, 4314b9c2d235fb9449e249d74f48ecfec601650de93John McCall UnaryOperatorKind opcode, 4324b9c2d235fb9449e249d74f48ecfec601650de93John McCall Expr *op) { 4334b9c2d235fb9449e249d74f48ecfec601650de93John McCall assert(UnaryOperator::isIncrementDecrementOp(opcode)); 4344b9c2d235fb9449e249d74f48ecfec601650de93John McCall 4354b9c2d235fb9449e249d74f48ecfec601650de93John McCall Expr *syntacticOp = rebuildAndCaptureObject(op); 4364b9c2d235fb9449e249d74f48ecfec601650de93John McCall 4374b9c2d235fb9449e249d74f48ecfec601650de93John McCall // Load the value. 4384b9c2d235fb9449e249d74f48ecfec601650de93John McCall ExprResult result = buildGet(); 4394b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (result.isInvalid()) return ExprError(); 4404b9c2d235fb9449e249d74f48ecfec601650de93John McCall 4414b9c2d235fb9449e249d74f48ecfec601650de93John McCall QualType resultType = result.get()->getType(); 4424b9c2d235fb9449e249d74f48ecfec601650de93John McCall 4434b9c2d235fb9449e249d74f48ecfec601650de93John McCall // That's the postfix result. 444d314abeffba04dffc101e4e71cc3a32ddeed4ae6John McCall if (UnaryOperator::isPostfix(opcode) && 445d314abeffba04dffc101e4e71cc3a32ddeed4ae6John McCall (result.get()->isTypeDependent() || CanCaptureValueOfType(resultType))) { 4464b9c2d235fb9449e249d74f48ecfec601650de93John McCall result = capture(result.take()); 4474b9c2d235fb9449e249d74f48ecfec601650de93John McCall setResultToLastSemantic(); 4484b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 4494b9c2d235fb9449e249d74f48ecfec601650de93John McCall 4504b9c2d235fb9449e249d74f48ecfec601650de93John McCall // Add or subtract a literal 1. 4514b9c2d235fb9449e249d74f48ecfec601650de93John McCall llvm::APInt oneV(S.Context.getTypeSize(S.Context.IntTy), 1); 4524b9c2d235fb9449e249d74f48ecfec601650de93John McCall Expr *one = IntegerLiteral::Create(S.Context, oneV, S.Context.IntTy, 4534b9c2d235fb9449e249d74f48ecfec601650de93John McCall GenericLoc); 4544b9c2d235fb9449e249d74f48ecfec601650de93John McCall 4554b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (UnaryOperator::isIncrementOp(opcode)) { 4564b9c2d235fb9449e249d74f48ecfec601650de93John McCall result = S.BuildBinOp(Sc, opcLoc, BO_Add, result.take(), one); 4574b9c2d235fb9449e249d74f48ecfec601650de93John McCall } else { 4584b9c2d235fb9449e249d74f48ecfec601650de93John McCall result = S.BuildBinOp(Sc, opcLoc, BO_Sub, result.take(), one); 4594b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 4604b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (result.isInvalid()) return ExprError(); 4614b9c2d235fb9449e249d74f48ecfec601650de93John McCall 4624b9c2d235fb9449e249d74f48ecfec601650de93John McCall // Store that back into the result. The value stored is the result 4634b9c2d235fb9449e249d74f48ecfec601650de93John McCall // of a prefix operation. 46425f071eedf5d20faf9e1614d5ff5dc39b6de5041Eli Friedman result = buildSet(result.take(), opcLoc, UnaryOperator::isPrefix(opcode)); 4654b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (result.isInvalid()) return ExprError(); 4664b9c2d235fb9449e249d74f48ecfec601650de93John McCall addSemanticExpr(result.take()); 4674b9c2d235fb9449e249d74f48ecfec601650de93John McCall 4684b9c2d235fb9449e249d74f48ecfec601650de93John McCall UnaryOperator *syntactic = 4694b9c2d235fb9449e249d74f48ecfec601650de93John McCall new (S.Context) UnaryOperator(syntacticOp, opcode, resultType, 4704b9c2d235fb9449e249d74f48ecfec601650de93John McCall VK_LValue, OK_Ordinary, opcLoc); 4714b9c2d235fb9449e249d74f48ecfec601650de93John McCall return complete(syntactic); 4724b9c2d235fb9449e249d74f48ecfec601650de93John McCall} 4734b9c2d235fb9449e249d74f48ecfec601650de93John McCall 4744b9c2d235fb9449e249d74f48ecfec601650de93John McCall 4754b9c2d235fb9449e249d74f48ecfec601650de93John McCall//===----------------------------------------------------------------------===// 4764b9c2d235fb9449e249d74f48ecfec601650de93John McCall// Objective-C @property and implicit property references 4774b9c2d235fb9449e249d74f48ecfec601650de93John McCall//===----------------------------------------------------------------------===// 4784b9c2d235fb9449e249d74f48ecfec601650de93John McCall 4794b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// Look up a method in the receiver type of an Objective-C property 4804b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// reference. 4813c3b7f90a863af43fa63043d396553ecf205351cJohn McCallstatic ObjCMethodDecl *LookupMethodInReceiverType(Sema &S, Selector sel, 4823c3b7f90a863af43fa63043d396553ecf205351cJohn McCall const ObjCPropertyRefExpr *PRE) { 4833c3b7f90a863af43fa63043d396553ecf205351cJohn McCall if (PRE->isObjectReceiver()) { 484aa9807a85959ffbdc5d9f649d7b24b9b2056d2cdBenjamin Kramer const ObjCObjectPointerType *PT = 485aa9807a85959ffbdc5d9f649d7b24b9b2056d2cdBenjamin Kramer PRE->getBase()->getType()->castAs<ObjCObjectPointerType>(); 4864b9c2d235fb9449e249d74f48ecfec601650de93John McCall 4874b9c2d235fb9449e249d74f48ecfec601650de93John McCall // Special case for 'self' in class method implementations. 4884b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (PT->isObjCClassType() && 4894b9c2d235fb9449e249d74f48ecfec601650de93John McCall S.isSelfExpr(const_cast<Expr*>(PRE->getBase()))) { 4904b9c2d235fb9449e249d74f48ecfec601650de93John McCall // This cast is safe because isSelfExpr is only true within 4914b9c2d235fb9449e249d74f48ecfec601650de93John McCall // methods. 4924b9c2d235fb9449e249d74f48ecfec601650de93John McCall ObjCMethodDecl *method = 4934b9c2d235fb9449e249d74f48ecfec601650de93John McCall cast<ObjCMethodDecl>(S.CurContext->getNonClosureAncestor()); 4944b9c2d235fb9449e249d74f48ecfec601650de93John McCall return S.LookupMethodInObjectType(sel, 4954b9c2d235fb9449e249d74f48ecfec601650de93John McCall S.Context.getObjCInterfaceType(method->getClassInterface()), 4964b9c2d235fb9449e249d74f48ecfec601650de93John McCall /*instance*/ false); 4974b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 4984b9c2d235fb9449e249d74f48ecfec601650de93John McCall 499aa9807a85959ffbdc5d9f649d7b24b9b2056d2cdBenjamin Kramer return S.LookupMethodInObjectType(sel, PT->getPointeeType(), true); 5003c3b7f90a863af43fa63043d396553ecf205351cJohn McCall } 5013c3b7f90a863af43fa63043d396553ecf205351cJohn McCall 502aa9807a85959ffbdc5d9f649d7b24b9b2056d2cdBenjamin Kramer if (PRE->isSuperReceiver()) { 503aa9807a85959ffbdc5d9f649d7b24b9b2056d2cdBenjamin Kramer if (const ObjCObjectPointerType *PT = 504aa9807a85959ffbdc5d9f649d7b24b9b2056d2cdBenjamin Kramer PRE->getSuperReceiverType()->getAs<ObjCObjectPointerType>()) 505aa9807a85959ffbdc5d9f649d7b24b9b2056d2cdBenjamin Kramer return S.LookupMethodInObjectType(sel, PT->getPointeeType(), true); 506aa9807a85959ffbdc5d9f649d7b24b9b2056d2cdBenjamin Kramer 507aa9807a85959ffbdc5d9f649d7b24b9b2056d2cdBenjamin Kramer return S.LookupMethodInObjectType(sel, PRE->getSuperReceiverType(), false); 508aa9807a85959ffbdc5d9f649d7b24b9b2056d2cdBenjamin Kramer } 509aa9807a85959ffbdc5d9f649d7b24b9b2056d2cdBenjamin Kramer 510aa9807a85959ffbdc5d9f649d7b24b9b2056d2cdBenjamin Kramer assert(PRE->isClassReceiver() && "Invalid expression"); 511aa9807a85959ffbdc5d9f649d7b24b9b2056d2cdBenjamin Kramer QualType IT = S.Context.getObjCInterfaceType(PRE->getClassReceiver()); 512aa9807a85959ffbdc5d9f649d7b24b9b2056d2cdBenjamin Kramer return S.LookupMethodInObjectType(sel, IT, false); 5133c3b7f90a863af43fa63043d396553ecf205351cJohn McCall} 5143c3b7f90a863af43fa63043d396553ecf205351cJohn McCall 51558b6bdcdeb683a3504f2248a409e1f4e85876ceeJordan Rosebool ObjCPropertyOpBuilder::isWeakProperty() const { 51658b6bdcdeb683a3504f2248a409e1f4e85876ceeJordan Rose QualType T; 51758b6bdcdeb683a3504f2248a409e1f4e85876ceeJordan Rose if (RefExpr->isExplicitProperty()) { 51858b6bdcdeb683a3504f2248a409e1f4e85876ceeJordan Rose const ObjCPropertyDecl *Prop = RefExpr->getExplicitProperty(); 51958b6bdcdeb683a3504f2248a409e1f4e85876ceeJordan Rose if (Prop->getPropertyAttributes() & ObjCPropertyDecl::OBJC_PR_weak) 52058b6bdcdeb683a3504f2248a409e1f4e85876ceeJordan Rose return true; 52158b6bdcdeb683a3504f2248a409e1f4e85876ceeJordan Rose 52258b6bdcdeb683a3504f2248a409e1f4e85876ceeJordan Rose T = Prop->getType(); 52358b6bdcdeb683a3504f2248a409e1f4e85876ceeJordan Rose } else if (Getter) { 52458b6bdcdeb683a3504f2248a409e1f4e85876ceeJordan Rose T = Getter->getResultType(); 52558b6bdcdeb683a3504f2248a409e1f4e85876ceeJordan Rose } else { 52658b6bdcdeb683a3504f2248a409e1f4e85876ceeJordan Rose return false; 52758b6bdcdeb683a3504f2248a409e1f4e85876ceeJordan Rose } 52858b6bdcdeb683a3504f2248a409e1f4e85876ceeJordan Rose 52958b6bdcdeb683a3504f2248a409e1f4e85876ceeJordan Rose return T.getObjCLifetime() == Qualifiers::OCL_Weak; 53058b6bdcdeb683a3504f2248a409e1f4e85876ceeJordan Rose} 53158b6bdcdeb683a3504f2248a409e1f4e85876ceeJordan Rose 5324b9c2d235fb9449e249d74f48ecfec601650de93John McCallbool ObjCPropertyOpBuilder::findGetter() { 5334b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (Getter) return true; 5344b9c2d235fb9449e249d74f48ecfec601650de93John McCall 535dc4df51d32dea56fbec79037570832dffbcc14e6John McCall // For implicit properties, just trust the lookup we already did. 536dc4df51d32dea56fbec79037570832dffbcc14e6John McCall if (RefExpr->isImplicitProperty()) { 537a2c91e75c944e3599fb108db600f91c47c8b4342Fariborz Jahanian if ((Getter = RefExpr->getImplicitPropertyGetter())) { 538a2c91e75c944e3599fb108db600f91c47c8b4342Fariborz Jahanian GetterSelector = Getter->getSelector(); 539a2c91e75c944e3599fb108db600f91c47c8b4342Fariborz Jahanian return true; 540a2c91e75c944e3599fb108db600f91c47c8b4342Fariborz Jahanian } 541a2c91e75c944e3599fb108db600f91c47c8b4342Fariborz Jahanian else { 542a2c91e75c944e3599fb108db600f91c47c8b4342Fariborz Jahanian // Must build the getter selector the hard way. 543a2c91e75c944e3599fb108db600f91c47c8b4342Fariborz Jahanian ObjCMethodDecl *setter = RefExpr->getImplicitPropertySetter(); 544a2c91e75c944e3599fb108db600f91c47c8b4342Fariborz Jahanian assert(setter && "both setter and getter are null - cannot happen"); 545a2c91e75c944e3599fb108db600f91c47c8b4342Fariborz Jahanian IdentifierInfo *setterName = 546a2c91e75c944e3599fb108db600f91c47c8b4342Fariborz Jahanian setter->getSelector().getIdentifierInfoForSlot(0); 547a2c91e75c944e3599fb108db600f91c47c8b4342Fariborz Jahanian const char *compStr = setterName->getNameStart(); 548a2c91e75c944e3599fb108db600f91c47c8b4342Fariborz Jahanian compStr += 3; 549a2c91e75c944e3599fb108db600f91c47c8b4342Fariborz Jahanian IdentifierInfo *getterName = &S.Context.Idents.get(compStr); 550a2c91e75c944e3599fb108db600f91c47c8b4342Fariborz Jahanian GetterSelector = 551a2c91e75c944e3599fb108db600f91c47c8b4342Fariborz Jahanian S.PP.getSelectorTable().getNullarySelector(getterName); 552a2c91e75c944e3599fb108db600f91c47c8b4342Fariborz Jahanian return false; 553a2c91e75c944e3599fb108db600f91c47c8b4342Fariborz Jahanian 554a2c91e75c944e3599fb108db600f91c47c8b4342Fariborz Jahanian } 555dc4df51d32dea56fbec79037570832dffbcc14e6John McCall } 556dc4df51d32dea56fbec79037570832dffbcc14e6John McCall 557dc4df51d32dea56fbec79037570832dffbcc14e6John McCall ObjCPropertyDecl *prop = RefExpr->getExplicitProperty(); 558dc4df51d32dea56fbec79037570832dffbcc14e6John McCall Getter = LookupMethodInReceiverType(S, prop->getGetterName(), RefExpr); 5594b9c2d235fb9449e249d74f48ecfec601650de93John McCall return (Getter != 0); 5604b9c2d235fb9449e249d74f48ecfec601650de93John McCall} 5614b9c2d235fb9449e249d74f48ecfec601650de93John McCall 5624b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// Try to find the most accurate setter declaration for the property 5634b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// reference. 5644b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// 5654b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// \return true if a setter was found, in which case Setter 566b5b155cb8bd2460693572bab5ce14dabf1a27d2fFariborz Jahanianbool ObjCPropertyOpBuilder::findSetter(bool warn) { 5674b9c2d235fb9449e249d74f48ecfec601650de93John McCall // For implicit properties, just trust the lookup we already did. 5684b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (RefExpr->isImplicitProperty()) { 5694b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (ObjCMethodDecl *setter = RefExpr->getImplicitPropertySetter()) { 5704b9c2d235fb9449e249d74f48ecfec601650de93John McCall Setter = setter; 5714b9c2d235fb9449e249d74f48ecfec601650de93John McCall SetterSelector = setter->getSelector(); 5724b9c2d235fb9449e249d74f48ecfec601650de93John McCall return true; 5733c3b7f90a863af43fa63043d396553ecf205351cJohn McCall } else { 5744b9c2d235fb9449e249d74f48ecfec601650de93John McCall IdentifierInfo *getterName = 5754b9c2d235fb9449e249d74f48ecfec601650de93John McCall RefExpr->getImplicitPropertyGetter()->getSelector() 5764b9c2d235fb9449e249d74f48ecfec601650de93John McCall .getIdentifierInfoForSlot(0); 5774b9c2d235fb9449e249d74f48ecfec601650de93John McCall SetterSelector = 57880e8ea92d6dcaa05165dcb4730485db82dcd4629Adrian Prantl SelectorTable::constructSetterSelector(S.PP.getIdentifierTable(), 57980e8ea92d6dcaa05165dcb4730485db82dcd4629Adrian Prantl S.PP.getSelectorTable(), 58080e8ea92d6dcaa05165dcb4730485db82dcd4629Adrian Prantl getterName); 5814b9c2d235fb9449e249d74f48ecfec601650de93John McCall return false; 5823c3b7f90a863af43fa63043d396553ecf205351cJohn McCall } 5833c3b7f90a863af43fa63043d396553ecf205351cJohn McCall } 5843c3b7f90a863af43fa63043d396553ecf205351cJohn McCall 5854b9c2d235fb9449e249d74f48ecfec601650de93John McCall // For explicit properties, this is more involved. 5864b9c2d235fb9449e249d74f48ecfec601650de93John McCall ObjCPropertyDecl *prop = RefExpr->getExplicitProperty(); 5874b9c2d235fb9449e249d74f48ecfec601650de93John McCall SetterSelector = prop->getSetterName(); 5884b9c2d235fb9449e249d74f48ecfec601650de93John McCall 5894b9c2d235fb9449e249d74f48ecfec601650de93John McCall // Do a normal method lookup first. 5904b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (ObjCMethodDecl *setter = 5914b9c2d235fb9449e249d74f48ecfec601650de93John McCall LookupMethodInReceiverType(S, SetterSelector, RefExpr)) { 5921e4691b9d8e1bdcc8ef62b323969d702c51b3c08Jordan Rose if (setter->isPropertyAccessor() && warn) 593b5b155cb8bd2460693572bab5ce14dabf1a27d2fFariborz Jahanian if (const ObjCInterfaceDecl *IFace = 594b5b155cb8bd2460693572bab5ce14dabf1a27d2fFariborz Jahanian dyn_cast<ObjCInterfaceDecl>(setter->getDeclContext())) { 595b5b155cb8bd2460693572bab5ce14dabf1a27d2fFariborz Jahanian const StringRef thisPropertyName(prop->getName()); 5963f6f51e28231f65de9c2dd150a2d757b2162cfa3Jordan Rose // Try flipping the case of the first character. 597b5b155cb8bd2460693572bab5ce14dabf1a27d2fFariborz Jahanian char front = thisPropertyName.front(); 5983f6f51e28231f65de9c2dd150a2d757b2162cfa3Jordan Rose front = isLowercase(front) ? toUppercase(front) : toLowercase(front); 599b5b155cb8bd2460693572bab5ce14dabf1a27d2fFariborz Jahanian SmallString<100> PropertyName = thisPropertyName; 600b5b155cb8bd2460693572bab5ce14dabf1a27d2fFariborz Jahanian PropertyName[0] = front; 601b5b155cb8bd2460693572bab5ce14dabf1a27d2fFariborz Jahanian IdentifierInfo *AltMember = &S.PP.getIdentifierTable().get(PropertyName); 602b5b155cb8bd2460693572bab5ce14dabf1a27d2fFariborz Jahanian if (ObjCPropertyDecl *prop1 = IFace->FindPropertyDeclaration(AltMember)) 603b5b155cb8bd2460693572bab5ce14dabf1a27d2fFariborz Jahanian if (prop != prop1 && (prop1->getSetterMethodDecl() == setter)) { 604cba0ebce65667f76e291346d377f402579743ceaFariborz Jahanian S.Diag(RefExpr->getExprLoc(), diag::error_property_setter_ambiguous_use) 605b5b155cb8bd2460693572bab5ce14dabf1a27d2fFariborz Jahanian << prop->getName() << prop1->getName() << setter->getSelector(); 606b5b155cb8bd2460693572bab5ce14dabf1a27d2fFariborz Jahanian S.Diag(prop->getLocation(), diag::note_property_declare); 607b5b155cb8bd2460693572bab5ce14dabf1a27d2fFariborz Jahanian S.Diag(prop1->getLocation(), diag::note_property_declare); 608b5b155cb8bd2460693572bab5ce14dabf1a27d2fFariborz Jahanian } 609b5b155cb8bd2460693572bab5ce14dabf1a27d2fFariborz Jahanian } 6104b9c2d235fb9449e249d74f48ecfec601650de93John McCall Setter = setter; 6114b9c2d235fb9449e249d74f48ecfec601650de93John McCall return true; 6124b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 6134b9c2d235fb9449e249d74f48ecfec601650de93John McCall 6144b9c2d235fb9449e249d74f48ecfec601650de93John McCall // That can fail in the somewhat crazy situation that we're 6154b9c2d235fb9449e249d74f48ecfec601650de93John McCall // type-checking a message send within the @interface declaration 6164b9c2d235fb9449e249d74f48ecfec601650de93John McCall // that declared the @property. But it's not clear that that's 6174b9c2d235fb9449e249d74f48ecfec601650de93John McCall // valuable to support. 6184b9c2d235fb9449e249d74f48ecfec601650de93John McCall 6194b9c2d235fb9449e249d74f48ecfec601650de93John McCall return false; 6204b9c2d235fb9449e249d74f48ecfec601650de93John McCall} 6214b9c2d235fb9449e249d74f48ecfec601650de93John McCall 6224b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// Capture the base object of an Objective-C property expression. 6234b9c2d235fb9449e249d74f48ecfec601650de93John McCallExpr *ObjCPropertyOpBuilder::rebuildAndCaptureObject(Expr *syntacticBase) { 6244b9c2d235fb9449e249d74f48ecfec601650de93John McCall assert(InstanceReceiver == 0); 6254b9c2d235fb9449e249d74f48ecfec601650de93John McCall 6264b9c2d235fb9449e249d74f48ecfec601650de93John McCall // If we have a base, capture it in an OVE and rebuild the syntactic 6274b9c2d235fb9449e249d74f48ecfec601650de93John McCall // form to use the OVE as its base. 6284b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (RefExpr->isObjectReceiver()) { 6294b9c2d235fb9449e249d74f48ecfec601650de93John McCall InstanceReceiver = capture(RefExpr->getBase()); 6304b9c2d235fb9449e249d74f48ecfec601650de93John McCall 6314b9c2d235fb9449e249d74f48ecfec601650de93John McCall syntacticBase = 6324b9c2d235fb9449e249d74f48ecfec601650de93John McCall ObjCPropertyRefRebuilder(S, InstanceReceiver).rebuild(syntacticBase); 6334b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 6344b9c2d235fb9449e249d74f48ecfec601650de93John McCall 635b085d898bdfe35097eba45f4072b0f6865f561dcArgyrios Kyrtzidis if (ObjCPropertyRefExpr * 636b085d898bdfe35097eba45f4072b0f6865f561dcArgyrios Kyrtzidis refE = dyn_cast<ObjCPropertyRefExpr>(syntacticBase->IgnoreParens())) 637b085d898bdfe35097eba45f4072b0f6865f561dcArgyrios Kyrtzidis SyntacticRefExpr = refE; 638b085d898bdfe35097eba45f4072b0f6865f561dcArgyrios Kyrtzidis 6394b9c2d235fb9449e249d74f48ecfec601650de93John McCall return syntacticBase; 6404b9c2d235fb9449e249d74f48ecfec601650de93John McCall} 6414b9c2d235fb9449e249d74f48ecfec601650de93John McCall 6424b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// Load from an Objective-C property reference. 6434b9c2d235fb9449e249d74f48ecfec601650de93John McCallExprResult ObjCPropertyOpBuilder::buildGet() { 6444b9c2d235fb9449e249d74f48ecfec601650de93John McCall findGetter(); 6454b9c2d235fb9449e249d74f48ecfec601650de93John McCall assert(Getter); 646b085d898bdfe35097eba45f4072b0f6865f561dcArgyrios Kyrtzidis 647b085d898bdfe35097eba45f4072b0f6865f561dcArgyrios Kyrtzidis if (SyntacticRefExpr) 648b085d898bdfe35097eba45f4072b0f6865f561dcArgyrios Kyrtzidis SyntacticRefExpr->setIsMessagingGetter(); 649b085d898bdfe35097eba45f4072b0f6865f561dcArgyrios Kyrtzidis 6504b9c2d235fb9449e249d74f48ecfec601650de93John McCall QualType receiverType; 6514b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (RefExpr->isClassReceiver()) { 6524b9c2d235fb9449e249d74f48ecfec601650de93John McCall receiverType = S.Context.getObjCInterfaceType(RefExpr->getClassReceiver()); 6534b9c2d235fb9449e249d74f48ecfec601650de93John McCall } else if (RefExpr->isSuperReceiver()) { 6544b9c2d235fb9449e249d74f48ecfec601650de93John McCall receiverType = RefExpr->getSuperReceiverType(); 6554b9c2d235fb9449e249d74f48ecfec601650de93John McCall } else { 6564b9c2d235fb9449e249d74f48ecfec601650de93John McCall assert(InstanceReceiver); 6574b9c2d235fb9449e249d74f48ecfec601650de93John McCall receiverType = InstanceReceiver->getType(); 6584b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 6593c3b7f90a863af43fa63043d396553ecf205351cJohn McCall 6604b9c2d235fb9449e249d74f48ecfec601650de93John McCall // Build a message-send. 6614b9c2d235fb9449e249d74f48ecfec601650de93John McCall ExprResult msg; 6624b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (Getter->isInstanceMethod() || RefExpr->isObjectReceiver()) { 6634b9c2d235fb9449e249d74f48ecfec601650de93John McCall assert(InstanceReceiver || RefExpr->isSuperReceiver()); 664746f5bcbfde5b25269169c63c66492311673b67dArgyrios Kyrtzidis msg = S.BuildInstanceMessageImplicit(InstanceReceiver, receiverType, 665746f5bcbfde5b25269169c63c66492311673b67dArgyrios Kyrtzidis GenericLoc, Getter->getSelector(), 66662ed889272d7e9da8e367d8682fdcdeeec0d83b5Dmitri Gribenko Getter, None); 6674b9c2d235fb9449e249d74f48ecfec601650de93John McCall } else { 668746f5bcbfde5b25269169c63c66492311673b67dArgyrios Kyrtzidis msg = S.BuildClassMessageImplicit(receiverType, RefExpr->isSuperReceiver(), 66962ed889272d7e9da8e367d8682fdcdeeec0d83b5Dmitri Gribenko GenericLoc, Getter->getSelector(), 67062ed889272d7e9da8e367d8682fdcdeeec0d83b5Dmitri Gribenko Getter, None); 6714b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 6724b9c2d235fb9449e249d74f48ecfec601650de93John McCall return msg; 6733c3b7f90a863af43fa63043d396553ecf205351cJohn McCall} 6743c3b7f90a863af43fa63043d396553ecf205351cJohn McCall 6754b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// Store to an Objective-C property reference. 6764b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// 67770517ca5c07c4b41ff8662b94ee22047b0299f8cDmitri Gribenko/// \param captureSetValueAsResult If true, capture the actual 6784b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// value being set as the value of the property operation. 6794b9c2d235fb9449e249d74f48ecfec601650de93John McCallExprResult ObjCPropertyOpBuilder::buildSet(Expr *op, SourceLocation opcLoc, 6804b9c2d235fb9449e249d74f48ecfec601650de93John McCall bool captureSetValueAsResult) { 681b5b155cb8bd2460693572bab5ce14dabf1a27d2fFariborz Jahanian bool hasSetter = findSetter(false); 6824b9c2d235fb9449e249d74f48ecfec601650de93John McCall assert(hasSetter); (void) hasSetter; 6834b9c2d235fb9449e249d74f48ecfec601650de93John McCall 684b085d898bdfe35097eba45f4072b0f6865f561dcArgyrios Kyrtzidis if (SyntacticRefExpr) 685b085d898bdfe35097eba45f4072b0f6865f561dcArgyrios Kyrtzidis SyntacticRefExpr->setIsMessagingSetter(); 686b085d898bdfe35097eba45f4072b0f6865f561dcArgyrios Kyrtzidis 6874b9c2d235fb9449e249d74f48ecfec601650de93John McCall QualType receiverType; 6884b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (RefExpr->isClassReceiver()) { 6894b9c2d235fb9449e249d74f48ecfec601650de93John McCall receiverType = S.Context.getObjCInterfaceType(RefExpr->getClassReceiver()); 6904b9c2d235fb9449e249d74f48ecfec601650de93John McCall } else if (RefExpr->isSuperReceiver()) { 6914b9c2d235fb9449e249d74f48ecfec601650de93John McCall receiverType = RefExpr->getSuperReceiverType(); 6924b9c2d235fb9449e249d74f48ecfec601650de93John McCall } else { 6934b9c2d235fb9449e249d74f48ecfec601650de93John McCall assert(InstanceReceiver); 6944b9c2d235fb9449e249d74f48ecfec601650de93John McCall receiverType = InstanceReceiver->getType(); 6954b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 6963c3b7f90a863af43fa63043d396553ecf205351cJohn McCall 6974b9c2d235fb9449e249d74f48ecfec601650de93John McCall // Use assignment constraints when possible; they give us better 6984b9c2d235fb9449e249d74f48ecfec601650de93John McCall // diagnostics. "When possible" basically means anything except a 6994b9c2d235fb9449e249d74f48ecfec601650de93John McCall // C++ class type. 7004e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!S.getLangOpts().CPlusPlus || !op->getType()->isRecordType()) { 7014b9c2d235fb9449e249d74f48ecfec601650de93John McCall QualType paramType = (*Setter->param_begin())->getType(); 7024e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!S.getLangOpts().CPlusPlus || !paramType->isRecordType()) { 7034b9c2d235fb9449e249d74f48ecfec601650de93John McCall ExprResult opResult = op; 7044b9c2d235fb9449e249d74f48ecfec601650de93John McCall Sema::AssignConvertType assignResult 7054b9c2d235fb9449e249d74f48ecfec601650de93John McCall = S.CheckSingleAssignmentConstraints(paramType, opResult); 7064b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (S.DiagnoseAssignmentResult(assignResult, opcLoc, paramType, 7074b9c2d235fb9449e249d74f48ecfec601650de93John McCall op->getType(), opResult.get(), 7084b9c2d235fb9449e249d74f48ecfec601650de93John McCall Sema::AA_Assigning)) 7094b9c2d235fb9449e249d74f48ecfec601650de93John McCall return ExprError(); 7104b9c2d235fb9449e249d74f48ecfec601650de93John McCall 7114b9c2d235fb9449e249d74f48ecfec601650de93John McCall op = opResult.take(); 7124b9c2d235fb9449e249d74f48ecfec601650de93John McCall assert(op && "successful assignment left argument invalid?"); 7133c3b7f90a863af43fa63043d396553ecf205351cJohn McCall } 7144b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 7153c3b7f90a863af43fa63043d396553ecf205351cJohn McCall 7164b9c2d235fb9449e249d74f48ecfec601650de93John McCall // Arguments. 7174b9c2d235fb9449e249d74f48ecfec601650de93John McCall Expr *args[] = { op }; 7183c3b7f90a863af43fa63043d396553ecf205351cJohn McCall 7194b9c2d235fb9449e249d74f48ecfec601650de93John McCall // Build a message-send. 7204b9c2d235fb9449e249d74f48ecfec601650de93John McCall ExprResult msg; 7214b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (Setter->isInstanceMethod() || RefExpr->isObjectReceiver()) { 722746f5bcbfde5b25269169c63c66492311673b67dArgyrios Kyrtzidis msg = S.BuildInstanceMessageImplicit(InstanceReceiver, receiverType, 723746f5bcbfde5b25269169c63c66492311673b67dArgyrios Kyrtzidis GenericLoc, SetterSelector, Setter, 724746f5bcbfde5b25269169c63c66492311673b67dArgyrios Kyrtzidis MultiExprArg(args, 1)); 7254b9c2d235fb9449e249d74f48ecfec601650de93John McCall } else { 726746f5bcbfde5b25269169c63c66492311673b67dArgyrios Kyrtzidis msg = S.BuildClassMessageImplicit(receiverType, RefExpr->isSuperReceiver(), 727746f5bcbfde5b25269169c63c66492311673b67dArgyrios Kyrtzidis GenericLoc, 728746f5bcbfde5b25269169c63c66492311673b67dArgyrios Kyrtzidis SetterSelector, Setter, 729746f5bcbfde5b25269169c63c66492311673b67dArgyrios Kyrtzidis MultiExprArg(args, 1)); 7304b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 7313c3b7f90a863af43fa63043d396553ecf205351cJohn McCall 7324b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (!msg.isInvalid() && captureSetValueAsResult) { 7334b9c2d235fb9449e249d74f48ecfec601650de93John McCall ObjCMessageExpr *msgExpr = 7344b9c2d235fb9449e249d74f48ecfec601650de93John McCall cast<ObjCMessageExpr>(msg.get()->IgnoreImplicit()); 7354b9c2d235fb9449e249d74f48ecfec601650de93John McCall Expr *arg = msgExpr->getArg(0); 73625f071eedf5d20faf9e1614d5ff5dc39b6de5041Eli Friedman if (CanCaptureValueOfType(arg->getType())) 73725f071eedf5d20faf9e1614d5ff5dc39b6de5041Eli Friedman msgExpr->setArg(0, captureValueAsResult(arg)); 7384b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 7393c3b7f90a863af43fa63043d396553ecf205351cJohn McCall 7404b9c2d235fb9449e249d74f48ecfec601650de93John McCall return msg; 7414b9c2d235fb9449e249d74f48ecfec601650de93John McCall} 7424b9c2d235fb9449e249d74f48ecfec601650de93John McCall 7434b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// @property-specific behavior for doing lvalue-to-rvalue conversion. 7444b9c2d235fb9449e249d74f48ecfec601650de93John McCallExprResult ObjCPropertyOpBuilder::buildRValueOperation(Expr *op) { 7454b9c2d235fb9449e249d74f48ecfec601650de93John McCall // Explicit properties always have getters, but implicit ones don't. 7464b9c2d235fb9449e249d74f48ecfec601650de93John McCall // Check that before proceeding. 747a70779f6b9a8135c3459bdeb1f0197b82ea0cb2aEli Friedman if (RefExpr->isImplicitProperty() && !RefExpr->getImplicitPropertyGetter()) { 7484b9c2d235fb9449e249d74f48ecfec601650de93John McCall S.Diag(RefExpr->getLocation(), diag::err_getter_not_found) 749a70779f6b9a8135c3459bdeb1f0197b82ea0cb2aEli Friedman << RefExpr->getSourceRange(); 7504b9c2d235fb9449e249d74f48ecfec601650de93John McCall return ExprError(); 7514b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 7524b9c2d235fb9449e249d74f48ecfec601650de93John McCall 7534b9c2d235fb9449e249d74f48ecfec601650de93John McCall ExprResult result = PseudoOpBuilder::buildRValueOperation(op); 7544b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (result.isInvalid()) return ExprError(); 7554b9c2d235fb9449e249d74f48ecfec601650de93John McCall 7564b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (RefExpr->isExplicitProperty() && !Getter->hasRelatedResultType()) 7574b9c2d235fb9449e249d74f48ecfec601650de93John McCall S.DiagnosePropertyAccessorMismatch(RefExpr->getExplicitProperty(), 7584b9c2d235fb9449e249d74f48ecfec601650de93John McCall Getter, RefExpr->getLocation()); 7594b9c2d235fb9449e249d74f48ecfec601650de93John McCall 7604b9c2d235fb9449e249d74f48ecfec601650de93John McCall // As a special case, if the method returns 'id', try to get 7614b9c2d235fb9449e249d74f48ecfec601650de93John McCall // a better type from the property. 7624b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (RefExpr->isExplicitProperty() && result.get()->isRValue() && 7634b9c2d235fb9449e249d74f48ecfec601650de93John McCall result.get()->getType()->isObjCIdType()) { 7644b9c2d235fb9449e249d74f48ecfec601650de93John McCall QualType propType = RefExpr->getExplicitProperty()->getType(); 7654b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (const ObjCObjectPointerType *ptr 7664b9c2d235fb9449e249d74f48ecfec601650de93John McCall = propType->getAs<ObjCObjectPointerType>()) { 7674b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (!ptr->isObjCIdType()) 7684b9c2d235fb9449e249d74f48ecfec601650de93John McCall result = S.ImpCastExprToType(result.get(), propType, CK_BitCast); 7693c3b7f90a863af43fa63043d396553ecf205351cJohn McCall } 7704b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 7714b9c2d235fb9449e249d74f48ecfec601650de93John McCall 7724b9c2d235fb9449e249d74f48ecfec601650de93John McCall return result; 7733c3b7f90a863af43fa63043d396553ecf205351cJohn McCall} 7743c3b7f90a863af43fa63043d396553ecf205351cJohn McCall 7754b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// Try to build this as a call to a getter that returns a reference. 7764b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// 7774b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// \return true if it was possible, whether or not it actually 7784b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// succeeded 7794b9c2d235fb9449e249d74f48ecfec601650de93John McCallbool ObjCPropertyOpBuilder::tryBuildGetOfReference(Expr *op, 7804b9c2d235fb9449e249d74f48ecfec601650de93John McCall ExprResult &result) { 7814e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!S.getLangOpts().CPlusPlus) return false; 7824b9c2d235fb9449e249d74f48ecfec601650de93John McCall 7834b9c2d235fb9449e249d74f48ecfec601650de93John McCall findGetter(); 7844b9c2d235fb9449e249d74f48ecfec601650de93John McCall assert(Getter && "property has no setter and no getter!"); 7854b9c2d235fb9449e249d74f48ecfec601650de93John McCall 7864b9c2d235fb9449e249d74f48ecfec601650de93John McCall // Only do this if the getter returns an l-value reference type. 7874b9c2d235fb9449e249d74f48ecfec601650de93John McCall QualType resultType = Getter->getResultType(); 7884b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (!resultType->isLValueReferenceType()) return false; 7894b9c2d235fb9449e249d74f48ecfec601650de93John McCall 7904b9c2d235fb9449e249d74f48ecfec601650de93John McCall result = buildRValueOperation(op); 7914b9c2d235fb9449e249d74f48ecfec601650de93John McCall return true; 7924b9c2d235fb9449e249d74f48ecfec601650de93John McCall} 7934b9c2d235fb9449e249d74f48ecfec601650de93John McCall 7944b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// @property-specific behavior for doing assignments. 7954b9c2d235fb9449e249d74f48ecfec601650de93John McCallExprResult 7964b9c2d235fb9449e249d74f48ecfec601650de93John McCallObjCPropertyOpBuilder::buildAssignmentOperation(Scope *Sc, 7974b9c2d235fb9449e249d74f48ecfec601650de93John McCall SourceLocation opcLoc, 7984b9c2d235fb9449e249d74f48ecfec601650de93John McCall BinaryOperatorKind opcode, 7994b9c2d235fb9449e249d74f48ecfec601650de93John McCall Expr *LHS, Expr *RHS) { 8004b9c2d235fb9449e249d74f48ecfec601650de93John McCall assert(BinaryOperator::isAssignmentOp(opcode)); 8013c3b7f90a863af43fa63043d396553ecf205351cJohn McCall 8023c3b7f90a863af43fa63043d396553ecf205351cJohn McCall // If there's no setter, we have no choice but to try to assign to 8033c3b7f90a863af43fa63043d396553ecf205351cJohn McCall // the result of the getter. 8044b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (!findSetter()) { 8054b9c2d235fb9449e249d74f48ecfec601650de93John McCall ExprResult result; 8064b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (tryBuildGetOfReference(LHS, result)) { 8074b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (result.isInvalid()) return ExprError(); 8084b9c2d235fb9449e249d74f48ecfec601650de93John McCall return S.BuildBinOp(Sc, opcLoc, opcode, result.take(), RHS); 8093c3b7f90a863af43fa63043d396553ecf205351cJohn McCall } 8103c3b7f90a863af43fa63043d396553ecf205351cJohn McCall 8113c3b7f90a863af43fa63043d396553ecf205351cJohn McCall // Otherwise, it's an error. 8124b9c2d235fb9449e249d74f48ecfec601650de93John McCall S.Diag(opcLoc, diag::err_nosetter_property_assignment) 8134b9c2d235fb9449e249d74f48ecfec601650de93John McCall << unsigned(RefExpr->isImplicitProperty()) 8144b9c2d235fb9449e249d74f48ecfec601650de93John McCall << SetterSelector 8154b9c2d235fb9449e249d74f48ecfec601650de93John McCall << LHS->getSourceRange() << RHS->getSourceRange(); 8163c3b7f90a863af43fa63043d396553ecf205351cJohn McCall return ExprError(); 8173c3b7f90a863af43fa63043d396553ecf205351cJohn McCall } 8183c3b7f90a863af43fa63043d396553ecf205351cJohn McCall 8194b9c2d235fb9449e249d74f48ecfec601650de93John McCall // If there is a setter, we definitely want to use it. 8204b9c2d235fb9449e249d74f48ecfec601650de93John McCall 8214b9c2d235fb9449e249d74f48ecfec601650de93John McCall // Verify that we can do a compound assignment. 8224b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (opcode != BO_Assign && !findGetter()) { 8234b9c2d235fb9449e249d74f48ecfec601650de93John McCall S.Diag(opcLoc, diag::err_nogetter_property_compound_assignment) 8244b9c2d235fb9449e249d74f48ecfec601650de93John McCall << LHS->getSourceRange() << RHS->getSourceRange(); 8253c3b7f90a863af43fa63043d396553ecf205351cJohn McCall return ExprError(); 8263c3b7f90a863af43fa63043d396553ecf205351cJohn McCall } 8273c3b7f90a863af43fa63043d396553ecf205351cJohn McCall 8284b9c2d235fb9449e249d74f48ecfec601650de93John McCall ExprResult result = 8294b9c2d235fb9449e249d74f48ecfec601650de93John McCall PseudoOpBuilder::buildAssignmentOperation(Sc, opcLoc, opcode, LHS, RHS); 8303c3b7f90a863af43fa63043d396553ecf205351cJohn McCall if (result.isInvalid()) return ExprError(); 8313c3b7f90a863af43fa63043d396553ecf205351cJohn McCall 8324b9c2d235fb9449e249d74f48ecfec601650de93John McCall // Various warnings about property assignments in ARC. 8334e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (S.getLangOpts().ObjCAutoRefCount && InstanceReceiver) { 8344b9c2d235fb9449e249d74f48ecfec601650de93John McCall S.checkRetainCycles(InstanceReceiver->getSourceExpr(), RHS); 8354b9c2d235fb9449e249d74f48ecfec601650de93John McCall S.checkUnsafeExprAssigns(opcLoc, LHS, RHS); 8364b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 8374b9c2d235fb9449e249d74f48ecfec601650de93John McCall 8383c3b7f90a863af43fa63043d396553ecf205351cJohn McCall return result; 8393c3b7f90a863af43fa63043d396553ecf205351cJohn McCall} 8403c3b7f90a863af43fa63043d396553ecf205351cJohn McCall 8414b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// @property-specific behavior for doing increments and decrements. 8424b9c2d235fb9449e249d74f48ecfec601650de93John McCallExprResult 8434b9c2d235fb9449e249d74f48ecfec601650de93John McCallObjCPropertyOpBuilder::buildIncDecOperation(Scope *Sc, SourceLocation opcLoc, 8444b9c2d235fb9449e249d74f48ecfec601650de93John McCall UnaryOperatorKind opcode, 8454b9c2d235fb9449e249d74f48ecfec601650de93John McCall Expr *op) { 8463c3b7f90a863af43fa63043d396553ecf205351cJohn McCall // If there's no setter, we have no choice but to try to assign to 8473c3b7f90a863af43fa63043d396553ecf205351cJohn McCall // the result of the getter. 8484b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (!findSetter()) { 8494b9c2d235fb9449e249d74f48ecfec601650de93John McCall ExprResult result; 8504b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (tryBuildGetOfReference(op, result)) { 8514b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (result.isInvalid()) return ExprError(); 8524b9c2d235fb9449e249d74f48ecfec601650de93John McCall return S.BuildUnaryOp(Sc, opcLoc, opcode, result.take()); 8533c3b7f90a863af43fa63043d396553ecf205351cJohn McCall } 8543c3b7f90a863af43fa63043d396553ecf205351cJohn McCall 8553c3b7f90a863af43fa63043d396553ecf205351cJohn McCall // Otherwise, it's an error. 8564b9c2d235fb9449e249d74f48ecfec601650de93John McCall S.Diag(opcLoc, diag::err_nosetter_property_incdec) 8574b9c2d235fb9449e249d74f48ecfec601650de93John McCall << unsigned(RefExpr->isImplicitProperty()) 8584b9c2d235fb9449e249d74f48ecfec601650de93John McCall << unsigned(UnaryOperator::isDecrementOp(opcode)) 8594b9c2d235fb9449e249d74f48ecfec601650de93John McCall << SetterSelector 8604b9c2d235fb9449e249d74f48ecfec601650de93John McCall << op->getSourceRange(); 8613c3b7f90a863af43fa63043d396553ecf205351cJohn McCall return ExprError(); 8623c3b7f90a863af43fa63043d396553ecf205351cJohn McCall } 8633c3b7f90a863af43fa63043d396553ecf205351cJohn McCall 8643c3b7f90a863af43fa63043d396553ecf205351cJohn McCall // If there is a setter, we definitely want to use it. 8653c3b7f90a863af43fa63043d396553ecf205351cJohn McCall 8664b9c2d235fb9449e249d74f48ecfec601650de93John McCall // We also need a getter. 8674b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (!findGetter()) { 8684b9c2d235fb9449e249d74f48ecfec601650de93John McCall assert(RefExpr->isImplicitProperty()); 8694b9c2d235fb9449e249d74f48ecfec601650de93John McCall S.Diag(opcLoc, diag::err_nogetter_property_incdec) 8704b9c2d235fb9449e249d74f48ecfec601650de93John McCall << unsigned(UnaryOperator::isDecrementOp(opcode)) 871a2c91e75c944e3599fb108db600f91c47c8b4342Fariborz Jahanian << GetterSelector 8724b9c2d235fb9449e249d74f48ecfec601650de93John McCall << op->getSourceRange(); 8734b9c2d235fb9449e249d74f48ecfec601650de93John McCall return ExprError(); 8744b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 8753c3b7f90a863af43fa63043d396553ecf205351cJohn McCall 8764b9c2d235fb9449e249d74f48ecfec601650de93John McCall return PseudoOpBuilder::buildIncDecOperation(Sc, opcLoc, opcode, op); 8774b9c2d235fb9449e249d74f48ecfec601650de93John McCall} 8783c3b7f90a863af43fa63043d396553ecf205351cJohn McCall 87958b6bdcdeb683a3504f2248a409e1f4e85876ceeJordan RoseExprResult ObjCPropertyOpBuilder::complete(Expr *SyntacticForm) { 88058b6bdcdeb683a3504f2248a409e1f4e85876ceeJordan Rose if (S.getLangOpts().ObjCAutoRefCount && isWeakProperty()) { 88158b6bdcdeb683a3504f2248a409e1f4e85876ceeJordan Rose DiagnosticsEngine::Level Level = 88258b6bdcdeb683a3504f2248a409e1f4e85876ceeJordan Rose S.Diags.getDiagnosticLevel(diag::warn_arc_repeated_use_of_weak, 88358b6bdcdeb683a3504f2248a409e1f4e85876ceeJordan Rose SyntacticForm->getLocStart()); 88458b6bdcdeb683a3504f2248a409e1f4e85876ceeJordan Rose if (Level != DiagnosticsEngine::Ignored) 885569b4ad6506960f1a7f191107c185cb1566a7fbbFariborz Jahanian S.recordUseOfEvaluatedWeak(SyntacticRefExpr, 886569b4ad6506960f1a7f191107c185cb1566a7fbbFariborz Jahanian SyntacticRefExpr->isMessagingGetter()); 88758b6bdcdeb683a3504f2248a409e1f4e85876ceeJordan Rose } 88858b6bdcdeb683a3504f2248a409e1f4e85876ceeJordan Rose 88958b6bdcdeb683a3504f2248a409e1f4e85876ceeJordan Rose return PseudoOpBuilder::complete(SyntacticForm); 89058b6bdcdeb683a3504f2248a409e1f4e85876ceeJordan Rose} 89158b6bdcdeb683a3504f2248a409e1f4e85876ceeJordan Rose 892ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek// ObjCSubscript build stuff. 893ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek// 894ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 895ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek/// objective-c subscripting-specific behavior for doing lvalue-to-rvalue 896ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek/// conversion. 897ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek/// FIXME. Remove this routine if it is proven that no additional 898ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek/// specifity is needed. 899ebcb57a8d298862c65043e88b2429591ab3c58d3Ted KremenekExprResult ObjCSubscriptOpBuilder::buildRValueOperation(Expr *op) { 900ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ExprResult result = PseudoOpBuilder::buildRValueOperation(op); 901ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (result.isInvalid()) return ExprError(); 902ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return result; 903ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek} 904ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 905ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek/// objective-c subscripting-specific behavior for doing assignments. 906ebcb57a8d298862c65043e88b2429591ab3c58d3Ted KremenekExprResult 907ebcb57a8d298862c65043e88b2429591ab3c58d3Ted KremenekObjCSubscriptOpBuilder::buildAssignmentOperation(Scope *Sc, 908ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek SourceLocation opcLoc, 909ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek BinaryOperatorKind opcode, 910ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Expr *LHS, Expr *RHS) { 911ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek assert(BinaryOperator::isAssignmentOp(opcode)); 912ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // There must be a method to do the Index'ed assignment. 913ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (!findAtIndexSetter()) 914ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return ExprError(); 915ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 916ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // Verify that we can do a compound assignment. 917ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (opcode != BO_Assign && !findAtIndexGetter()) 918ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return ExprError(); 919ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 920ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ExprResult result = 921ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek PseudoOpBuilder::buildAssignmentOperation(Sc, opcLoc, opcode, LHS, RHS); 922ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (result.isInvalid()) return ExprError(); 923ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 924ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // Various warnings about objc Index'ed assignments in ARC. 9254e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (S.getLangOpts().ObjCAutoRefCount && InstanceBase) { 926ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek S.checkRetainCycles(InstanceBase->getSourceExpr(), RHS); 927ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek S.checkUnsafeExprAssigns(opcLoc, LHS, RHS); 928ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 929ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 930ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return result; 931ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek} 932ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 933ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek/// Capture the base object of an Objective-C Index'ed expression. 934ebcb57a8d298862c65043e88b2429591ab3c58d3Ted KremenekExpr *ObjCSubscriptOpBuilder::rebuildAndCaptureObject(Expr *syntacticBase) { 935ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek assert(InstanceBase == 0); 936ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 937ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // Capture base expression in an OVE and rebuild the syntactic 938ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // form to use the OVE as its base expression. 939ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek InstanceBase = capture(RefExpr->getBaseExpr()); 940ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek InstanceKey = capture(RefExpr->getKeyExpr()); 941ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 942ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek syntacticBase = 943ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ObjCSubscriptRefRebuilder(S, InstanceBase, 944ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek InstanceKey).rebuild(syntacticBase); 945ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 946ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return syntacticBase; 947ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek} 948ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 949ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek/// CheckSubscriptingKind - This routine decide what type 950ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek/// of indexing represented by "FromE" is being done. 951ebcb57a8d298862c65043e88b2429591ab3c58d3Ted KremenekSema::ObjCSubscriptKind 952ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Sema::CheckSubscriptingKind(Expr *FromE) { 953ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // If the expression already has integral or enumeration type, we're golden. 954ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek QualType T = FromE->getType(); 955ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (T->isIntegralOrEnumerationType()) 956ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return OS_Array; 957ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 958ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // If we don't have a class type in C++, there's no way we can get an 959ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // expression of integral or enumeration type. 960ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek const RecordType *RecordTy = T->getAs<RecordType>(); 961a78eca20429e55b041bffcea1938cd0df07a6ebdFariborz Jahanian if (!RecordTy && T->isObjCObjectPointerType()) 962ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // All other scalar cases are assumed to be dictionary indexing which 963ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // caller handles, with diagnostics if needed. 964ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return OS_Dictionary; 965a78eca20429e55b041bffcea1938cd0df07a6ebdFariborz Jahanian if (!getLangOpts().CPlusPlus || 966a78eca20429e55b041bffcea1938cd0df07a6ebdFariborz Jahanian !RecordTy || RecordTy->isIncompleteType()) { 967ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // No indexing can be done. Issue diagnostics and quit. 968a78eca20429e55b041bffcea1938cd0df07a6ebdFariborz Jahanian const Expr *IndexExpr = FromE->IgnoreParenImpCasts(); 969a78eca20429e55b041bffcea1938cd0df07a6ebdFariborz Jahanian if (isa<StringLiteral>(IndexExpr)) 970a78eca20429e55b041bffcea1938cd0df07a6ebdFariborz Jahanian Diag(FromE->getExprLoc(), diag::err_objc_subscript_pointer) 971a78eca20429e55b041bffcea1938cd0df07a6ebdFariborz Jahanian << T << FixItHint::CreateInsertion(FromE->getExprLoc(), "@"); 972a78eca20429e55b041bffcea1938cd0df07a6ebdFariborz Jahanian else 973a78eca20429e55b041bffcea1938cd0df07a6ebdFariborz Jahanian Diag(FromE->getExprLoc(), diag::err_objc_subscript_type_conversion) 974a78eca20429e55b041bffcea1938cd0df07a6ebdFariborz Jahanian << T; 975ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return OS_Error; 976ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 977ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 978ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // We must have a complete class type. 979ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (RequireCompleteType(FromE->getExprLoc(), T, 980d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor diag::err_objc_index_incomplete_class_type, FromE)) 981ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return OS_Error; 982ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 983ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // Look for a conversion to an integral, enumeration type, or 984ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // objective-C pointer type. 985ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek UnresolvedSet<4> ViableConversions; 986ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek UnresolvedSet<4> ExplicitConversions; 9879d29543284e75648ac89c6e9586fc7cf786cf66fArgyrios Kyrtzidis std::pair<CXXRecordDecl::conversion_iterator, 9889d29543284e75648ac89c6e9586fc7cf786cf66fArgyrios Kyrtzidis CXXRecordDecl::conversion_iterator> Conversions 989ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek = cast<CXXRecordDecl>(RecordTy->getDecl())->getVisibleConversionFunctions(); 990ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 991ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek int NoIntegrals=0, NoObjCIdPointers=0; 992ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek SmallVector<CXXConversionDecl *, 4> ConversionDecls; 993ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 9949d29543284e75648ac89c6e9586fc7cf786cf66fArgyrios Kyrtzidis for (CXXRecordDecl::conversion_iterator 9959d29543284e75648ac89c6e9586fc7cf786cf66fArgyrios Kyrtzidis I = Conversions.first, E = Conversions.second; I != E; ++I) { 996ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (CXXConversionDecl *Conversion 997ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek = dyn_cast<CXXConversionDecl>((*I)->getUnderlyingDecl())) { 998ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek QualType CT = Conversion->getConversionType().getNonReferenceType(); 999ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (CT->isIntegralOrEnumerationType()) { 1000ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ++NoIntegrals; 1001ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ConversionDecls.push_back(Conversion); 1002ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 1003ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek else if (CT->isObjCIdType() ||CT->isBlockPointerType()) { 1004ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ++NoObjCIdPointers; 1005ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ConversionDecls.push_back(Conversion); 1006ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 1007ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 1008ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 1009ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (NoIntegrals ==1 && NoObjCIdPointers == 0) 1010ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return OS_Array; 1011ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (NoIntegrals == 0 && NoObjCIdPointers == 1) 1012ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return OS_Dictionary; 1013ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (NoIntegrals == 0 && NoObjCIdPointers == 0) { 1014ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // No conversion function was found. Issue diagnostic and return. 1015ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Diag(FromE->getExprLoc(), diag::err_objc_subscript_type_conversion) 1016ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek << FromE->getType(); 1017ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return OS_Error; 1018ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 1019ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Diag(FromE->getExprLoc(), diag::err_objc_multiple_subscript_type_conversion) 1020ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek << FromE->getType(); 1021ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek for (unsigned int i = 0; i < ConversionDecls.size(); i++) 1022ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Diag(ConversionDecls[i]->getLocation(), diag::not_conv_function_declared_at); 1023ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 1024ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return OS_Error; 1025ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek} 1026ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 1027dc48305e319c56f6f305c12b9faecdc378dfebdcFariborz Jahanian/// CheckKeyForObjCARCConversion - This routine suggests bridge casting of CF 1028dc48305e319c56f6f305c12b9faecdc378dfebdcFariborz Jahanian/// objects used as dictionary subscript key objects. 1029dc48305e319c56f6f305c12b9faecdc378dfebdcFariborz Jahanianstatic void CheckKeyForObjCARCConversion(Sema &S, QualType ContainerT, 1030dc48305e319c56f6f305c12b9faecdc378dfebdcFariborz Jahanian Expr *Key) { 1031dc48305e319c56f6f305c12b9faecdc378dfebdcFariborz Jahanian if (ContainerT.isNull()) 1032dc48305e319c56f6f305c12b9faecdc378dfebdcFariborz Jahanian return; 1033dc48305e319c56f6f305c12b9faecdc378dfebdcFariborz Jahanian // dictionary subscripting. 1034dc48305e319c56f6f305c12b9faecdc378dfebdcFariborz Jahanian // - (id)objectForKeyedSubscript:(id)key; 1035dc48305e319c56f6f305c12b9faecdc378dfebdcFariborz Jahanian IdentifierInfo *KeyIdents[] = { 1036dc48305e319c56f6f305c12b9faecdc378dfebdcFariborz Jahanian &S.Context.Idents.get("objectForKeyedSubscript") 1037dc48305e319c56f6f305c12b9faecdc378dfebdcFariborz Jahanian }; 1038dc48305e319c56f6f305c12b9faecdc378dfebdcFariborz Jahanian Selector GetterSelector = S.Context.Selectors.getSelector(1, KeyIdents); 1039dc48305e319c56f6f305c12b9faecdc378dfebdcFariborz Jahanian ObjCMethodDecl *Getter = S.LookupMethodInObjectType(GetterSelector, ContainerT, 1040dc48305e319c56f6f305c12b9faecdc378dfebdcFariborz Jahanian true /*instance*/); 1041dc48305e319c56f6f305c12b9faecdc378dfebdcFariborz Jahanian if (!Getter) 1042dc48305e319c56f6f305c12b9faecdc378dfebdcFariborz Jahanian return; 1043dc48305e319c56f6f305c12b9faecdc378dfebdcFariborz Jahanian QualType T = Getter->param_begin()[0]->getType(); 1044dc48305e319c56f6f305c12b9faecdc378dfebdcFariborz Jahanian S.CheckObjCARCConversion(Key->getSourceRange(), 1045dc48305e319c56f6f305c12b9faecdc378dfebdcFariborz Jahanian T, Key, Sema::CCK_ImplicitConversion); 1046dc48305e319c56f6f305c12b9faecdc378dfebdcFariborz Jahanian} 1047dc48305e319c56f6f305c12b9faecdc378dfebdcFariborz Jahanian 1048ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenekbool ObjCSubscriptOpBuilder::findAtIndexGetter() { 1049ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (AtIndexGetter) 1050ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return true; 1051ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 1052ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Expr *BaseExpr = RefExpr->getBaseExpr(); 1053ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek QualType BaseT = BaseExpr->getType(); 1054ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 1055ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek QualType ResultType; 1056ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (const ObjCObjectPointerType *PTy = 1057ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek BaseT->getAs<ObjCObjectPointerType>()) { 1058ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ResultType = PTy->getPointeeType(); 1059ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (const ObjCObjectType *iQFaceTy = 1060ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ResultType->getAsObjCQualifiedInterfaceType()) 1061ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ResultType = iQFaceTy->getBaseType(); 1062ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 1063ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Sema::ObjCSubscriptKind Res = 1064ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek S.CheckSubscriptingKind(RefExpr->getKeyExpr()); 1065dc48305e319c56f6f305c12b9faecdc378dfebdcFariborz Jahanian if (Res == Sema::OS_Error) { 1066dc48305e319c56f6f305c12b9faecdc378dfebdcFariborz Jahanian if (S.getLangOpts().ObjCAutoRefCount) 1067dc48305e319c56f6f305c12b9faecdc378dfebdcFariborz Jahanian CheckKeyForObjCARCConversion(S, ResultType, 1068dc48305e319c56f6f305c12b9faecdc378dfebdcFariborz Jahanian RefExpr->getKeyExpr()); 1069ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return false; 1070dc48305e319c56f6f305c12b9faecdc378dfebdcFariborz Jahanian } 1071ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek bool arrayRef = (Res == Sema::OS_Array); 1072ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 1073ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (ResultType.isNull()) { 1074ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek S.Diag(BaseExpr->getExprLoc(), diag::err_objc_subscript_base_type) 1075ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek << BaseExpr->getType() << arrayRef; 1076ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return false; 1077ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 1078ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (!arrayRef) { 1079ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // dictionary subscripting. 1080ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // - (id)objectForKeyedSubscript:(id)key; 1081ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek IdentifierInfo *KeyIdents[] = { 1082ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek &S.Context.Idents.get("objectForKeyedSubscript") 1083ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek }; 1084ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek AtIndexGetterSelector = S.Context.Selectors.getSelector(1, KeyIdents); 1085ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 1086ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek else { 1087ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // - (id)objectAtIndexedSubscript:(size_t)index; 1088ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek IdentifierInfo *KeyIdents[] = { 1089ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek &S.Context.Idents.get("objectAtIndexedSubscript") 1090ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek }; 1091ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 1092ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek AtIndexGetterSelector = S.Context.Selectors.getSelector(1, KeyIdents); 1093ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 1094ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 1095ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek AtIndexGetter = S.LookupMethodInObjectType(AtIndexGetterSelector, ResultType, 1096ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek true /*instance*/); 1097ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek bool receiverIdType = (BaseT->isObjCIdType() || 1098ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek BaseT->isObjCQualifiedIdType()); 1099ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 11004e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!AtIndexGetter && S.getLangOpts().DebuggerObjCLiteral) { 1101ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek AtIndexGetter = ObjCMethodDecl::Create(S.Context, SourceLocation(), 1102ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek SourceLocation(), AtIndexGetterSelector, 1103ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek S.Context.getObjCIdType() /*ReturnType*/, 1104ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 0 /*TypeSourceInfo */, 1105ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek S.Context.getTranslationUnitDecl(), 1106ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek true /*Instance*/, false/*isVariadic*/, 11071e4691b9d8e1bdcc8ef62b323969d702c51b3c08Jordan Rose /*isPropertyAccessor=*/false, 1108ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek /*isImplicitlyDeclared=*/true, /*isDefined=*/false, 1109ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ObjCMethodDecl::Required, 1110ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek false); 1111ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ParmVarDecl *Argument = ParmVarDecl::Create(S.Context, AtIndexGetter, 1112ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek SourceLocation(), SourceLocation(), 1113ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek arrayRef ? &S.Context.Idents.get("index") 1114ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek : &S.Context.Idents.get("key"), 1115ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek arrayRef ? S.Context.UnsignedLongTy 1116ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek : S.Context.getObjCIdType(), 1117ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek /*TInfo=*/0, 1118ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek SC_None, 1119ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 0); 11205543169296beeb183b9c9392debc774fcf493eebDmitri Gribenko AtIndexGetter->setMethodParams(S.Context, Argument, None); 1121ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 1122ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 1123ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (!AtIndexGetter) { 1124ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (!receiverIdType) { 1125ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek S.Diag(BaseExpr->getExprLoc(), diag::err_objc_subscript_method_not_found) 1126ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek << BaseExpr->getType() << 0 << arrayRef; 1127ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return false; 1128ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 1129ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek AtIndexGetter = 1130ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek S.LookupInstanceMethodInGlobalPool(AtIndexGetterSelector, 1131ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek RefExpr->getSourceRange(), 1132ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek true, false); 1133ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 1134ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 1135ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (AtIndexGetter) { 1136ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek QualType T = AtIndexGetter->param_begin()[0]->getType(); 1137ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if ((arrayRef && !T->isIntegralOrEnumerationType()) || 1138ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek (!arrayRef && !T->isObjCObjectPointerType())) { 1139ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek S.Diag(RefExpr->getKeyExpr()->getExprLoc(), 1140ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek arrayRef ? diag::err_objc_subscript_index_type 1141ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek : diag::err_objc_subscript_key_type) << T; 1142ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek S.Diag(AtIndexGetter->param_begin()[0]->getLocation(), 1143ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek diag::note_parameter_type) << T; 1144ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return false; 1145ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 1146ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek QualType R = AtIndexGetter->getResultType(); 1147ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (!R->isObjCObjectPointerType()) { 1148ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek S.Diag(RefExpr->getKeyExpr()->getExprLoc(), 1149ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek diag::err_objc_indexing_method_result_type) << R << arrayRef; 1150ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek S.Diag(AtIndexGetter->getLocation(), diag::note_method_declared_at) << 1151ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek AtIndexGetter->getDeclName(); 1152ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 1153ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 1154ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return true; 1155ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek} 1156ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 1157ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenekbool ObjCSubscriptOpBuilder::findAtIndexSetter() { 1158ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (AtIndexSetter) 1159ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return true; 1160ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 1161ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Expr *BaseExpr = RefExpr->getBaseExpr(); 1162ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek QualType BaseT = BaseExpr->getType(); 1163ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 1164ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek QualType ResultType; 1165ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (const ObjCObjectPointerType *PTy = 1166ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek BaseT->getAs<ObjCObjectPointerType>()) { 1167ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ResultType = PTy->getPointeeType(); 1168ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (const ObjCObjectType *iQFaceTy = 1169ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ResultType->getAsObjCQualifiedInterfaceType()) 1170ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ResultType = iQFaceTy->getBaseType(); 1171ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 1172ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 1173ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Sema::ObjCSubscriptKind Res = 1174ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek S.CheckSubscriptingKind(RefExpr->getKeyExpr()); 1175dc48305e319c56f6f305c12b9faecdc378dfebdcFariborz Jahanian if (Res == Sema::OS_Error) { 1176dc48305e319c56f6f305c12b9faecdc378dfebdcFariborz Jahanian if (S.getLangOpts().ObjCAutoRefCount) 1177dc48305e319c56f6f305c12b9faecdc378dfebdcFariborz Jahanian CheckKeyForObjCARCConversion(S, ResultType, 1178dc48305e319c56f6f305c12b9faecdc378dfebdcFariborz Jahanian RefExpr->getKeyExpr()); 1179ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return false; 1180dc48305e319c56f6f305c12b9faecdc378dfebdcFariborz Jahanian } 1181ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek bool arrayRef = (Res == Sema::OS_Array); 1182ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 1183ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (ResultType.isNull()) { 1184ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek S.Diag(BaseExpr->getExprLoc(), diag::err_objc_subscript_base_type) 1185ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek << BaseExpr->getType() << arrayRef; 1186ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return false; 1187ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 1188ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 1189ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (!arrayRef) { 1190ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // dictionary subscripting. 1191ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // - (void)setObject:(id)object forKeyedSubscript:(id)key; 1192ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek IdentifierInfo *KeyIdents[] = { 1193ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek &S.Context.Idents.get("setObject"), 1194ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek &S.Context.Idents.get("forKeyedSubscript") 1195ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek }; 1196ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek AtIndexSetterSelector = S.Context.Selectors.getSelector(2, KeyIdents); 1197ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 1198ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek else { 1199ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // - (void)setObject:(id)object atIndexedSubscript:(NSInteger)index; 1200ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek IdentifierInfo *KeyIdents[] = { 1201ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek &S.Context.Idents.get("setObject"), 1202ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek &S.Context.Idents.get("atIndexedSubscript") 1203ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek }; 1204ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek AtIndexSetterSelector = S.Context.Selectors.getSelector(2, KeyIdents); 1205ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 1206ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek AtIndexSetter = S.LookupMethodInObjectType(AtIndexSetterSelector, ResultType, 1207ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek true /*instance*/); 1208ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 1209ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek bool receiverIdType = (BaseT->isObjCIdType() || 1210ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek BaseT->isObjCQualifiedIdType()); 1211ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 12124e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!AtIndexSetter && S.getLangOpts().DebuggerObjCLiteral) { 1213ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek TypeSourceInfo *ResultTInfo = 0; 1214ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek QualType ReturnType = S.Context.VoidTy; 1215ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek AtIndexSetter = ObjCMethodDecl::Create(S.Context, SourceLocation(), 1216ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek SourceLocation(), AtIndexSetterSelector, 1217ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ReturnType, 1218ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ResultTInfo, 1219ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek S.Context.getTranslationUnitDecl(), 1220ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek true /*Instance*/, false/*isVariadic*/, 12211e4691b9d8e1bdcc8ef62b323969d702c51b3c08Jordan Rose /*isPropertyAccessor=*/false, 1222ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek /*isImplicitlyDeclared=*/true, /*isDefined=*/false, 1223ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ObjCMethodDecl::Required, 1224ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek false); 1225ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek SmallVector<ParmVarDecl *, 2> Params; 1226ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ParmVarDecl *object = ParmVarDecl::Create(S.Context, AtIndexSetter, 1227ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek SourceLocation(), SourceLocation(), 1228ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek &S.Context.Idents.get("object"), 1229ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek S.Context.getObjCIdType(), 1230ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek /*TInfo=*/0, 1231ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek SC_None, 1232ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 0); 1233ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Params.push_back(object); 1234ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ParmVarDecl *key = ParmVarDecl::Create(S.Context, AtIndexSetter, 1235ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek SourceLocation(), SourceLocation(), 1236ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek arrayRef ? &S.Context.Idents.get("index") 1237ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek : &S.Context.Idents.get("key"), 1238ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek arrayRef ? S.Context.UnsignedLongTy 1239ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek : S.Context.getObjCIdType(), 1240ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek /*TInfo=*/0, 1241ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek SC_None, 1242ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 0); 1243ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Params.push_back(key); 12445543169296beeb183b9c9392debc774fcf493eebDmitri Gribenko AtIndexSetter->setMethodParams(S.Context, Params, None); 1245ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 1246ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 1247ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (!AtIndexSetter) { 1248ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (!receiverIdType) { 1249ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek S.Diag(BaseExpr->getExprLoc(), 1250ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek diag::err_objc_subscript_method_not_found) 1251ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek << BaseExpr->getType() << 1 << arrayRef; 1252ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return false; 1253ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 1254ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek AtIndexSetter = 1255ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek S.LookupInstanceMethodInGlobalPool(AtIndexSetterSelector, 1256ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek RefExpr->getSourceRange(), 1257ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek true, false); 1258ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 1259ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 1260ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek bool err = false; 1261ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (AtIndexSetter && arrayRef) { 1262ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek QualType T = AtIndexSetter->param_begin()[1]->getType(); 1263ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (!T->isIntegralOrEnumerationType()) { 1264ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek S.Diag(RefExpr->getKeyExpr()->getExprLoc(), 1265ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek diag::err_objc_subscript_index_type) << T; 1266ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek S.Diag(AtIndexSetter->param_begin()[1]->getLocation(), 1267ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek diag::note_parameter_type) << T; 1268ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek err = true; 1269ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 1270ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek T = AtIndexSetter->param_begin()[0]->getType(); 1271ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (!T->isObjCObjectPointerType()) { 1272ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek S.Diag(RefExpr->getBaseExpr()->getExprLoc(), 1273ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek diag::err_objc_subscript_object_type) << T << arrayRef; 1274ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek S.Diag(AtIndexSetter->param_begin()[0]->getLocation(), 1275ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek diag::note_parameter_type) << T; 1276ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek err = true; 1277ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 1278ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 1279ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek else if (AtIndexSetter && !arrayRef) 1280ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek for (unsigned i=0; i <2; i++) { 1281ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek QualType T = AtIndexSetter->param_begin()[i]->getType(); 1282ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (!T->isObjCObjectPointerType()) { 1283ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (i == 1) 1284ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek S.Diag(RefExpr->getKeyExpr()->getExprLoc(), 1285ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek diag::err_objc_subscript_key_type) << T; 1286ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek else 1287ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek S.Diag(RefExpr->getBaseExpr()->getExprLoc(), 1288ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek diag::err_objc_subscript_dic_object_type) << T; 1289ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek S.Diag(AtIndexSetter->param_begin()[i]->getLocation(), 1290ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek diag::note_parameter_type) << T; 1291ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek err = true; 1292ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 1293ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 1294ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 1295ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return !err; 1296ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek} 1297ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 1298ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek// Get the object at "Index" position in the container. 1299ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek// [BaseExpr objectAtIndexedSubscript : IndexExpr]; 1300ebcb57a8d298862c65043e88b2429591ab3c58d3Ted KremenekExprResult ObjCSubscriptOpBuilder::buildGet() { 1301ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (!findAtIndexGetter()) 1302ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return ExprError(); 1303ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 1304ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek QualType receiverType = InstanceBase->getType(); 1305ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 1306ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // Build a message-send. 1307ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ExprResult msg; 1308ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Expr *Index = InstanceKey; 1309ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 1310ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // Arguments. 1311ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Expr *args[] = { Index }; 1312ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek assert(InstanceBase); 1313ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek msg = S.BuildInstanceMessageImplicit(InstanceBase, receiverType, 1314ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek GenericLoc, 1315ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek AtIndexGetterSelector, AtIndexGetter, 1316ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek MultiExprArg(args, 1)); 1317ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return msg; 1318ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek} 1319ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 1320ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek/// Store into the container the "op" object at "Index"'ed location 1321ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek/// by building this messaging expression: 1322ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek/// - (void)setObject:(id)object atIndexedSubscript:(NSInteger)index; 132370517ca5c07c4b41ff8662b94ee22047b0299f8cDmitri Gribenko/// \param captureSetValueAsResult If true, capture the actual 1324ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek/// value being set as the value of the property operation. 1325ebcb57a8d298862c65043e88b2429591ab3c58d3Ted KremenekExprResult ObjCSubscriptOpBuilder::buildSet(Expr *op, SourceLocation opcLoc, 1326ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek bool captureSetValueAsResult) { 1327ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (!findAtIndexSetter()) 1328ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return ExprError(); 1329ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 1330ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek QualType receiverType = InstanceBase->getType(); 1331ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Expr *Index = InstanceKey; 1332ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 1333ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // Arguments. 1334ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Expr *args[] = { op, Index }; 1335ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 1336ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // Build a message-send. 1337ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ExprResult msg = S.BuildInstanceMessageImplicit(InstanceBase, receiverType, 1338ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek GenericLoc, 1339ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek AtIndexSetterSelector, 1340ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek AtIndexSetter, 1341ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek MultiExprArg(args, 2)); 1342ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 1343ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (!msg.isInvalid() && captureSetValueAsResult) { 1344ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ObjCMessageExpr *msgExpr = 1345ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek cast<ObjCMessageExpr>(msg.get()->IgnoreImplicit()); 1346ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Expr *arg = msgExpr->getArg(0); 134725f071eedf5d20faf9e1614d5ff5dc39b6de5041Eli Friedman if (CanCaptureValueOfType(arg->getType())) 134825f071eedf5d20faf9e1614d5ff5dc39b6de5041Eli Friedman msgExpr->setArg(0, captureValueAsResult(arg)); 1349ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 1350ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 1351ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return msg; 1352ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek} 1353ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 13544b9c2d235fb9449e249d74f48ecfec601650de93John McCall//===----------------------------------------------------------------------===// 135576da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall// MSVC __declspec(property) references 135676da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall//===----------------------------------------------------------------------===// 135776da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall 135876da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCallExpr *MSPropertyOpBuilder::rebuildAndCaptureObject(Expr *syntacticBase) { 135976da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall Expr *NewBase = capture(RefExpr->getBaseExpr()); 136076da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall 136176da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall syntacticBase = 136276da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall MSPropertyRefRebuilder(S, NewBase).rebuild(syntacticBase); 136376da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall 136476da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall return syntacticBase; 136576da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall} 136676da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall 136776da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCallExprResult MSPropertyOpBuilder::buildGet() { 136876da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall if (!RefExpr->getPropertyDecl()->hasGetter()) { 136976da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall S.Diag(RefExpr->getMemberLoc(), diag::err_no_getter_for_property) 137076da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall << RefExpr->getPropertyDecl()->getName(); 137176da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall return ExprError(); 137276da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall } 137376da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall 137476da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall UnqualifiedId GetterName; 137576da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall IdentifierInfo *II = RefExpr->getPropertyDecl()->getGetterId(); 137676da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall GetterName.setIdentifier(II, RefExpr->getMemberLoc()); 137776da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall CXXScopeSpec SS; 137876da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall SS.Adopt(RefExpr->getQualifierLoc()); 137976da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall ExprResult GetterExpr = S.ActOnMemberAccessExpr( 138076da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall S.getCurScope(), RefExpr->getBaseExpr(), SourceLocation(), 138176da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall RefExpr->isArrow() ? tok::arrow : tok::period, SS, SourceLocation(), 138276da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall GetterName, 0, true); 138376da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall if (GetterExpr.isInvalid()) { 138476da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall S.Diag(RefExpr->getMemberLoc(), diag::error_cannot_find_suitable_getter) 138576da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall << RefExpr->getPropertyDecl()->getName(); 138676da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall return ExprError(); 138776da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall } 138876da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall 138976da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall MultiExprArg ArgExprs; 139076da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall return S.ActOnCallExpr(S.getCurScope(), GetterExpr.take(), 139176da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall RefExpr->getSourceRange().getBegin(), ArgExprs, 139276da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall RefExpr->getSourceRange().getEnd()); 139376da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall} 139476da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall 139576da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCallExprResult MSPropertyOpBuilder::buildSet(Expr *op, SourceLocation sl, 139676da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall bool captureSetValueAsResult) { 139776da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall if (!RefExpr->getPropertyDecl()->hasSetter()) { 139876da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall S.Diag(RefExpr->getMemberLoc(), diag::err_no_setter_for_property) 139976da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall << RefExpr->getPropertyDecl()->getName(); 140076da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall return ExprError(); 140176da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall } 140276da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall 140376da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall UnqualifiedId SetterName; 140476da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall IdentifierInfo *II = RefExpr->getPropertyDecl()->getSetterId(); 140576da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall SetterName.setIdentifier(II, RefExpr->getMemberLoc()); 140676da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall CXXScopeSpec SS; 140776da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall SS.Adopt(RefExpr->getQualifierLoc()); 140876da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall ExprResult SetterExpr = S.ActOnMemberAccessExpr( 140976da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall S.getCurScope(), RefExpr->getBaseExpr(), SourceLocation(), 141076da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall RefExpr->isArrow() ? tok::arrow : tok::period, SS, SourceLocation(), 141176da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall SetterName, 0, true); 141276da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall if (SetterExpr.isInvalid()) { 141376da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall S.Diag(RefExpr->getMemberLoc(), diag::error_cannot_find_suitable_setter) 141476da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall << RefExpr->getPropertyDecl()->getName(); 141576da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall return ExprError(); 141676da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall } 141776da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall 141876da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall SmallVector<Expr*, 1> ArgExprs; 141976da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall ArgExprs.push_back(op); 142076da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall return S.ActOnCallExpr(S.getCurScope(), SetterExpr.take(), 142176da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall RefExpr->getSourceRange().getBegin(), ArgExprs, 142276da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall op->getSourceRange().getEnd()); 142376da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall} 142476da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall 142576da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall//===----------------------------------------------------------------------===// 14264b9c2d235fb9449e249d74f48ecfec601650de93John McCall// General Sema routines. 14274b9c2d235fb9449e249d74f48ecfec601650de93John McCall//===----------------------------------------------------------------------===// 14283c3b7f90a863af43fa63043d396553ecf205351cJohn McCall 14294b9c2d235fb9449e249d74f48ecfec601650de93John McCallExprResult Sema::checkPseudoObjectRValue(Expr *E) { 14304b9c2d235fb9449e249d74f48ecfec601650de93John McCall Expr *opaqueRef = E->IgnoreParens(); 14314b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (ObjCPropertyRefExpr *refExpr 14324b9c2d235fb9449e249d74f48ecfec601650de93John McCall = dyn_cast<ObjCPropertyRefExpr>(opaqueRef)) { 14334b9c2d235fb9449e249d74f48ecfec601650de93John McCall ObjCPropertyOpBuilder builder(*this, refExpr); 14344b9c2d235fb9449e249d74f48ecfec601650de93John McCall return builder.buildRValueOperation(E); 1435ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 1436ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek else if (ObjCSubscriptRefExpr *refExpr 1437ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek = dyn_cast<ObjCSubscriptRefExpr>(opaqueRef)) { 1438ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ObjCSubscriptOpBuilder builder(*this, refExpr); 1439ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return builder.buildRValueOperation(E); 144076da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall } else if (MSPropertyRefExpr *refExpr 144176da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall = dyn_cast<MSPropertyRefExpr>(opaqueRef)) { 144276da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall MSPropertyOpBuilder builder(*this, refExpr); 144376da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall return builder.buildRValueOperation(E); 14444b9c2d235fb9449e249d74f48ecfec601650de93John McCall } else { 14454b9c2d235fb9449e249d74f48ecfec601650de93John McCall llvm_unreachable("unknown pseudo-object kind!"); 14463c3b7f90a863af43fa63043d396553ecf205351cJohn McCall } 14474b9c2d235fb9449e249d74f48ecfec601650de93John McCall} 14483c3b7f90a863af43fa63043d396553ecf205351cJohn McCall 14494b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// Check an increment or decrement of a pseudo-object expression. 14504b9c2d235fb9449e249d74f48ecfec601650de93John McCallExprResult Sema::checkPseudoObjectIncDec(Scope *Sc, SourceLocation opcLoc, 14514b9c2d235fb9449e249d74f48ecfec601650de93John McCall UnaryOperatorKind opcode, Expr *op) { 14524b9c2d235fb9449e249d74f48ecfec601650de93John McCall // Do nothing if the operand is dependent. 14534b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (op->isTypeDependent()) 14544b9c2d235fb9449e249d74f48ecfec601650de93John McCall return new (Context) UnaryOperator(op, opcode, Context.DependentTy, 14554b9c2d235fb9449e249d74f48ecfec601650de93John McCall VK_RValue, OK_Ordinary, opcLoc); 14564b9c2d235fb9449e249d74f48ecfec601650de93John McCall 14574b9c2d235fb9449e249d74f48ecfec601650de93John McCall assert(UnaryOperator::isIncrementDecrementOp(opcode)); 14584b9c2d235fb9449e249d74f48ecfec601650de93John McCall Expr *opaqueRef = op->IgnoreParens(); 14594b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (ObjCPropertyRefExpr *refExpr 14604b9c2d235fb9449e249d74f48ecfec601650de93John McCall = dyn_cast<ObjCPropertyRefExpr>(opaqueRef)) { 14614b9c2d235fb9449e249d74f48ecfec601650de93John McCall ObjCPropertyOpBuilder builder(*this, refExpr); 14624b9c2d235fb9449e249d74f48ecfec601650de93John McCall return builder.buildIncDecOperation(Sc, opcLoc, opcode, op); 1463ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } else if (isa<ObjCSubscriptRefExpr>(opaqueRef)) { 1464ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Diag(opcLoc, diag::err_illegal_container_subscripting_op); 1465ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return ExprError(); 146676da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall } else if (MSPropertyRefExpr *refExpr 146776da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall = dyn_cast<MSPropertyRefExpr>(opaqueRef)) { 146876da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall MSPropertyOpBuilder builder(*this, refExpr); 146976da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall return builder.buildIncDecOperation(Sc, opcLoc, opcode, op); 14704b9c2d235fb9449e249d74f48ecfec601650de93John McCall } else { 14714b9c2d235fb9449e249d74f48ecfec601650de93John McCall llvm_unreachable("unknown pseudo-object kind!"); 14723c3b7f90a863af43fa63043d396553ecf205351cJohn McCall } 14734b9c2d235fb9449e249d74f48ecfec601650de93John McCall} 14743c3b7f90a863af43fa63043d396553ecf205351cJohn McCall 14754b9c2d235fb9449e249d74f48ecfec601650de93John McCallExprResult Sema::checkPseudoObjectAssignment(Scope *S, SourceLocation opcLoc, 14764b9c2d235fb9449e249d74f48ecfec601650de93John McCall BinaryOperatorKind opcode, 14774b9c2d235fb9449e249d74f48ecfec601650de93John McCall Expr *LHS, Expr *RHS) { 14784b9c2d235fb9449e249d74f48ecfec601650de93John McCall // Do nothing if either argument is dependent. 14794b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (LHS->isTypeDependent() || RHS->isTypeDependent()) 14804b9c2d235fb9449e249d74f48ecfec601650de93John McCall return new (Context) BinaryOperator(LHS, RHS, opcode, Context.DependentTy, 1481be9af1288881110e406b87914162eaa59f1e5918Lang Hames VK_RValue, OK_Ordinary, opcLoc, false); 14824b9c2d235fb9449e249d74f48ecfec601650de93John McCall 14834b9c2d235fb9449e249d74f48ecfec601650de93John McCall // Filter out non-overload placeholder types in the RHS. 148432509f1e60451d86e9fbc473b6e853ba10b5fd1eJohn McCall if (RHS->getType()->isNonOverloadPlaceholderType()) { 148532509f1e60451d86e9fbc473b6e853ba10b5fd1eJohn McCall ExprResult result = CheckPlaceholderExpr(RHS); 148632509f1e60451d86e9fbc473b6e853ba10b5fd1eJohn McCall if (result.isInvalid()) return ExprError(); 148732509f1e60451d86e9fbc473b6e853ba10b5fd1eJohn McCall RHS = result.take(); 14884b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 14893c3b7f90a863af43fa63043d396553ecf205351cJohn McCall 14904b9c2d235fb9449e249d74f48ecfec601650de93John McCall Expr *opaqueRef = LHS->IgnoreParens(); 14914b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (ObjCPropertyRefExpr *refExpr 14924b9c2d235fb9449e249d74f48ecfec601650de93John McCall = dyn_cast<ObjCPropertyRefExpr>(opaqueRef)) { 14934b9c2d235fb9449e249d74f48ecfec601650de93John McCall ObjCPropertyOpBuilder builder(*this, refExpr); 14944b9c2d235fb9449e249d74f48ecfec601650de93John McCall return builder.buildAssignmentOperation(S, opcLoc, opcode, LHS, RHS); 1495ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } else if (ObjCSubscriptRefExpr *refExpr 1496ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek = dyn_cast<ObjCSubscriptRefExpr>(opaqueRef)) { 1497ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ObjCSubscriptOpBuilder builder(*this, refExpr); 1498ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return builder.buildAssignmentOperation(S, opcLoc, opcode, LHS, RHS); 149976da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall } else if (MSPropertyRefExpr *refExpr 150076da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall = dyn_cast<MSPropertyRefExpr>(opaqueRef)) { 150176da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall MSPropertyOpBuilder builder(*this, refExpr); 150276da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall return builder.buildAssignmentOperation(S, opcLoc, opcode, LHS, RHS); 15034b9c2d235fb9449e249d74f48ecfec601650de93John McCall } else { 15044b9c2d235fb9449e249d74f48ecfec601650de93John McCall llvm_unreachable("unknown pseudo-object kind!"); 15054b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 15063c3b7f90a863af43fa63043d396553ecf205351cJohn McCall} 150701e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall 150801e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall/// Given a pseudo-object reference, rebuild it without the opaque 150901e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall/// values. Basically, undo the behavior of rebuildAndCaptureObject. 151001e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall/// This should never operate in-place. 151101e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCallstatic Expr *stripOpaqueValuesFromPseudoObjectRef(Sema &S, Expr *E) { 151201e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall Expr *opaqueRef = E->IgnoreParens(); 151301e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall if (ObjCPropertyRefExpr *refExpr 151401e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall = dyn_cast<ObjCPropertyRefExpr>(opaqueRef)) { 151588507ddf6f83b929454c04470924cf56b4b8147aDouglas Gregor // Class and super property references don't have opaque values in them. 151688507ddf6f83b929454c04470924cf56b4b8147aDouglas Gregor if (refExpr->isClassReceiver() || refExpr->isSuperReceiver()) 151788507ddf6f83b929454c04470924cf56b4b8147aDouglas Gregor return E; 151888507ddf6f83b929454c04470924cf56b4b8147aDouglas Gregor 151988507ddf6f83b929454c04470924cf56b4b8147aDouglas Gregor assert(refExpr->isObjectReceiver() && "Unknown receiver kind?"); 152088507ddf6f83b929454c04470924cf56b4b8147aDouglas Gregor OpaqueValueExpr *baseOVE = cast<OpaqueValueExpr>(refExpr->getBase()); 152188507ddf6f83b929454c04470924cf56b4b8147aDouglas Gregor return ObjCPropertyRefRebuilder(S, baseOVE->getSourceExpr()).rebuild(E); 1522ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } else if (ObjCSubscriptRefExpr *refExpr 1523ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek = dyn_cast<ObjCSubscriptRefExpr>(opaqueRef)) { 1524ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek OpaqueValueExpr *baseOVE = cast<OpaqueValueExpr>(refExpr->getBaseExpr()); 1525ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek OpaqueValueExpr *keyOVE = cast<OpaqueValueExpr>(refExpr->getKeyExpr()); 1526ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return ObjCSubscriptRefRebuilder(S, baseOVE->getSourceExpr(), 1527ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek keyOVE->getSourceExpr()).rebuild(E); 152876da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall } else if (MSPropertyRefExpr *refExpr 152976da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall = dyn_cast<MSPropertyRefExpr>(opaqueRef)) { 153076da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall OpaqueValueExpr *baseOVE = cast<OpaqueValueExpr>(refExpr->getBaseExpr()); 153176da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall return MSPropertyRefRebuilder(S, baseOVE->getSourceExpr()).rebuild(E); 153201e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall } else { 153301e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall llvm_unreachable("unknown pseudo-object kind!"); 153401e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall } 153501e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall} 153601e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall 153701e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall/// Given a pseudo-object expression, recreate what it looks like 153801e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall/// syntactically without the attendant OpaqueValueExprs. 153901e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall/// 154001e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall/// This is a hack which should be removed when TreeTransform is 154101e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall/// capable of rebuilding a tree without stripping implicit 154201e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall/// operations. 154301e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCallExpr *Sema::recreateSyntacticForm(PseudoObjectExpr *E) { 154401e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall Expr *syntax = E->getSyntacticForm(); 154501e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall if (UnaryOperator *uop = dyn_cast<UnaryOperator>(syntax)) { 154601e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall Expr *op = stripOpaqueValuesFromPseudoObjectRef(*this, uop->getSubExpr()); 154701e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall return new (Context) UnaryOperator(op, uop->getOpcode(), uop->getType(), 154801e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall uop->getValueKind(), uop->getObjectKind(), 154901e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall uop->getOperatorLoc()); 155001e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall } else if (CompoundAssignOperator *cop 155101e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall = dyn_cast<CompoundAssignOperator>(syntax)) { 155201e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall Expr *lhs = stripOpaqueValuesFromPseudoObjectRef(*this, cop->getLHS()); 155301e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall Expr *rhs = cast<OpaqueValueExpr>(cop->getRHS())->getSourceExpr(); 155401e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall return new (Context) CompoundAssignOperator(lhs, rhs, cop->getOpcode(), 155501e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall cop->getType(), 155601e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall cop->getValueKind(), 155701e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall cop->getObjectKind(), 155801e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall cop->getComputationLHSType(), 155901e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall cop->getComputationResultType(), 1560be9af1288881110e406b87914162eaa59f1e5918Lang Hames cop->getOperatorLoc(), false); 156101e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall } else if (BinaryOperator *bop = dyn_cast<BinaryOperator>(syntax)) { 156201e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall Expr *lhs = stripOpaqueValuesFromPseudoObjectRef(*this, bop->getLHS()); 156301e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall Expr *rhs = cast<OpaqueValueExpr>(bop->getRHS())->getSourceExpr(); 156401e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall return new (Context) BinaryOperator(lhs, rhs, bop->getOpcode(), 156501e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall bop->getType(), bop->getValueKind(), 156601e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall bop->getObjectKind(), 1567be9af1288881110e406b87914162eaa59f1e5918Lang Hames bop->getOperatorLoc(), false); 156801e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall } else { 156901e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall assert(syntax->hasPlaceholderType(BuiltinType::PseudoObject)); 157001e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall return stripOpaqueValuesFromPseudoObjectRef(*this, syntax); 157101e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall } 157201e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall} 1573