SemaPseudoObject.cpp revision d10099e5c8238fa0327f03921cf2e3c8975c881e
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/Sema/Initialization.h" 353c3b7f90a863af43fa63043d396553ecf205351cJohn McCall#include "clang/AST/ExprObjC.h" 363c3b7f90a863af43fa63043d396553ecf205351cJohn McCall#include "clang/Lex/Preprocessor.h" 373c3b7f90a863af43fa63043d396553ecf205351cJohn McCall 383c3b7f90a863af43fa63043d396553ecf205351cJohn McCallusing namespace clang; 393c3b7f90a863af43fa63043d396553ecf205351cJohn McCallusing namespace sema; 403c3b7f90a863af43fa63043d396553ecf205351cJohn McCall 414b9c2d235fb9449e249d74f48ecfec601650de93John McCallnamespace { 424b9c2d235fb9449e249d74f48ecfec601650de93John McCall // Basically just a very focused copy of TreeTransform. 434b9c2d235fb9449e249d74f48ecfec601650de93John McCall template <class T> struct Rebuilder { 444b9c2d235fb9449e249d74f48ecfec601650de93John McCall Sema &S; 454b9c2d235fb9449e249d74f48ecfec601650de93John McCall Rebuilder(Sema &S) : S(S) {} 464b9c2d235fb9449e249d74f48ecfec601650de93John McCall 474b9c2d235fb9449e249d74f48ecfec601650de93John McCall T &getDerived() { return static_cast<T&>(*this); } 484b9c2d235fb9449e249d74f48ecfec601650de93John McCall 494b9c2d235fb9449e249d74f48ecfec601650de93John McCall Expr *rebuild(Expr *e) { 504b9c2d235fb9449e249d74f48ecfec601650de93John McCall // Fast path: nothing to look through. 514b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (typename T::specific_type *specific 524b9c2d235fb9449e249d74f48ecfec601650de93John McCall = dyn_cast<typename T::specific_type>(e)) 534b9c2d235fb9449e249d74f48ecfec601650de93John McCall return getDerived().rebuildSpecific(specific); 544b9c2d235fb9449e249d74f48ecfec601650de93John McCall 554b9c2d235fb9449e249d74f48ecfec601650de93John McCall // Otherwise, we should look through and rebuild anything that 564b9c2d235fb9449e249d74f48ecfec601650de93John McCall // IgnoreParens would. 574b9c2d235fb9449e249d74f48ecfec601650de93John McCall 584b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (ParenExpr *parens = dyn_cast<ParenExpr>(e)) { 594b9c2d235fb9449e249d74f48ecfec601650de93John McCall e = rebuild(parens->getSubExpr()); 604b9c2d235fb9449e249d74f48ecfec601650de93John McCall return new (S.Context) ParenExpr(parens->getLParen(), 614b9c2d235fb9449e249d74f48ecfec601650de93John McCall parens->getRParen(), 624b9c2d235fb9449e249d74f48ecfec601650de93John McCall e); 634b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 644b9c2d235fb9449e249d74f48ecfec601650de93John McCall 654b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (UnaryOperator *uop = dyn_cast<UnaryOperator>(e)) { 664b9c2d235fb9449e249d74f48ecfec601650de93John McCall assert(uop->getOpcode() == UO_Extension); 674b9c2d235fb9449e249d74f48ecfec601650de93John McCall e = rebuild(uop->getSubExpr()); 684b9c2d235fb9449e249d74f48ecfec601650de93John McCall return new (S.Context) UnaryOperator(e, uop->getOpcode(), 694b9c2d235fb9449e249d74f48ecfec601650de93John McCall uop->getType(), 704b9c2d235fb9449e249d74f48ecfec601650de93John McCall uop->getValueKind(), 714b9c2d235fb9449e249d74f48ecfec601650de93John McCall uop->getObjectKind(), 724b9c2d235fb9449e249d74f48ecfec601650de93John McCall uop->getOperatorLoc()); 734b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 744b9c2d235fb9449e249d74f48ecfec601650de93John McCall 754b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (GenericSelectionExpr *gse = dyn_cast<GenericSelectionExpr>(e)) { 764b9c2d235fb9449e249d74f48ecfec601650de93John McCall assert(!gse->isResultDependent()); 774b9c2d235fb9449e249d74f48ecfec601650de93John McCall unsigned resultIndex = gse->getResultIndex(); 784b9c2d235fb9449e249d74f48ecfec601650de93John McCall unsigned numAssocs = gse->getNumAssocs(); 794b9c2d235fb9449e249d74f48ecfec601650de93John McCall 804b9c2d235fb9449e249d74f48ecfec601650de93John McCall SmallVector<Expr*, 8> assocs(numAssocs); 814b9c2d235fb9449e249d74f48ecfec601650de93John McCall SmallVector<TypeSourceInfo*, 8> assocTypes(numAssocs); 824b9c2d235fb9449e249d74f48ecfec601650de93John McCall 834b9c2d235fb9449e249d74f48ecfec601650de93John McCall for (unsigned i = 0; i != numAssocs; ++i) { 844b9c2d235fb9449e249d74f48ecfec601650de93John McCall Expr *assoc = gse->getAssocExpr(i); 854b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (i == resultIndex) assoc = rebuild(assoc); 864b9c2d235fb9449e249d74f48ecfec601650de93John McCall assocs[i] = assoc; 874b9c2d235fb9449e249d74f48ecfec601650de93John McCall assocTypes[i] = gse->getAssocTypeSourceInfo(i); 884b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 894b9c2d235fb9449e249d74f48ecfec601650de93John McCall 904b9c2d235fb9449e249d74f48ecfec601650de93John McCall return new (S.Context) GenericSelectionExpr(S.Context, 914b9c2d235fb9449e249d74f48ecfec601650de93John McCall gse->getGenericLoc(), 924b9c2d235fb9449e249d74f48ecfec601650de93John McCall gse->getControllingExpr(), 934b9c2d235fb9449e249d74f48ecfec601650de93John McCall assocTypes.data(), 944b9c2d235fb9449e249d74f48ecfec601650de93John McCall assocs.data(), 954b9c2d235fb9449e249d74f48ecfec601650de93John McCall numAssocs, 964b9c2d235fb9449e249d74f48ecfec601650de93John McCall gse->getDefaultLoc(), 974b9c2d235fb9449e249d74f48ecfec601650de93John McCall gse->getRParenLoc(), 984b9c2d235fb9449e249d74f48ecfec601650de93John McCall gse->containsUnexpandedParameterPack(), 994b9c2d235fb9449e249d74f48ecfec601650de93John McCall resultIndex); 1004b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 1014b9c2d235fb9449e249d74f48ecfec601650de93John McCall 1024b9c2d235fb9449e249d74f48ecfec601650de93John McCall llvm_unreachable("bad expression to rebuild!"); 1034b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 1044b9c2d235fb9449e249d74f48ecfec601650de93John McCall }; 1054b9c2d235fb9449e249d74f48ecfec601650de93John McCall 1064b9c2d235fb9449e249d74f48ecfec601650de93John McCall struct ObjCPropertyRefRebuilder : Rebuilder<ObjCPropertyRefRebuilder> { 1074b9c2d235fb9449e249d74f48ecfec601650de93John McCall Expr *NewBase; 1084b9c2d235fb9449e249d74f48ecfec601650de93John McCall ObjCPropertyRefRebuilder(Sema &S, Expr *newBase) 109acf9e82fd34c0a125bf2aa8be1ab868082a7f06aBenjamin Kramer : Rebuilder<ObjCPropertyRefRebuilder>(S), NewBase(newBase) {} 1104b9c2d235fb9449e249d74f48ecfec601650de93John McCall 1114b9c2d235fb9449e249d74f48ecfec601650de93John McCall typedef ObjCPropertyRefExpr specific_type; 1124b9c2d235fb9449e249d74f48ecfec601650de93John McCall Expr *rebuildSpecific(ObjCPropertyRefExpr *refExpr) { 1134b9c2d235fb9449e249d74f48ecfec601650de93John McCall // Fortunately, the constraint that we're rebuilding something 1144b9c2d235fb9449e249d74f48ecfec601650de93John McCall // with a base limits the number of cases here. 1154b9c2d235fb9449e249d74f48ecfec601650de93John McCall assert(refExpr->getBase()); 1164b9c2d235fb9449e249d74f48ecfec601650de93John McCall 1174b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (refExpr->isExplicitProperty()) { 1184b9c2d235fb9449e249d74f48ecfec601650de93John McCall return new (S.Context) 1194b9c2d235fb9449e249d74f48ecfec601650de93John McCall ObjCPropertyRefExpr(refExpr->getExplicitProperty(), 1204b9c2d235fb9449e249d74f48ecfec601650de93John McCall refExpr->getType(), refExpr->getValueKind(), 1214b9c2d235fb9449e249d74f48ecfec601650de93John McCall refExpr->getObjectKind(), refExpr->getLocation(), 1224b9c2d235fb9449e249d74f48ecfec601650de93John McCall NewBase); 1234b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 1244b9c2d235fb9449e249d74f48ecfec601650de93John McCall return new (S.Context) 1254b9c2d235fb9449e249d74f48ecfec601650de93John McCall ObjCPropertyRefExpr(refExpr->getImplicitPropertyGetter(), 1264b9c2d235fb9449e249d74f48ecfec601650de93John McCall refExpr->getImplicitPropertySetter(), 1274b9c2d235fb9449e249d74f48ecfec601650de93John McCall refExpr->getType(), refExpr->getValueKind(), 1284b9c2d235fb9449e249d74f48ecfec601650de93John McCall refExpr->getObjectKind(),refExpr->getLocation(), 1294b9c2d235fb9449e249d74f48ecfec601650de93John McCall NewBase); 1304b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 1314b9c2d235fb9449e249d74f48ecfec601650de93John McCall }; 1324b9c2d235fb9449e249d74f48ecfec601650de93John McCall 133ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek struct ObjCSubscriptRefRebuilder : Rebuilder<ObjCSubscriptRefRebuilder> { 134ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Expr *NewBase; 135ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Expr *NewKeyExpr; 136ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ObjCSubscriptRefRebuilder(Sema &S, Expr *newBase, Expr *newKeyExpr) 137ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek : Rebuilder<ObjCSubscriptRefRebuilder>(S), 138ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek NewBase(newBase), NewKeyExpr(newKeyExpr) {} 139ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 140ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek typedef ObjCSubscriptRefExpr specific_type; 141ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Expr *rebuildSpecific(ObjCSubscriptRefExpr *refExpr) { 142ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek assert(refExpr->getBaseExpr()); 143ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek assert(refExpr->getKeyExpr()); 144ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 145ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return new (S.Context) 146ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ObjCSubscriptRefExpr(NewBase, 147ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek NewKeyExpr, 148ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek refExpr->getType(), refExpr->getValueKind(), 149ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek refExpr->getObjectKind(),refExpr->getAtIndexMethodDecl(), 150ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek refExpr->setAtIndexMethodDecl(), 151ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek refExpr->getRBracket()); 152ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 153ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek }; 154ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 1554b9c2d235fb9449e249d74f48ecfec601650de93John McCall class PseudoOpBuilder { 1564b9c2d235fb9449e249d74f48ecfec601650de93John McCall public: 1574b9c2d235fb9449e249d74f48ecfec601650de93John McCall Sema &S; 1584b9c2d235fb9449e249d74f48ecfec601650de93John McCall unsigned ResultIndex; 1594b9c2d235fb9449e249d74f48ecfec601650de93John McCall SourceLocation GenericLoc; 1604b9c2d235fb9449e249d74f48ecfec601650de93John McCall SmallVector<Expr *, 4> Semantics; 1614b9c2d235fb9449e249d74f48ecfec601650de93John McCall 1624b9c2d235fb9449e249d74f48ecfec601650de93John McCall PseudoOpBuilder(Sema &S, SourceLocation genericLoc) 1634b9c2d235fb9449e249d74f48ecfec601650de93John McCall : S(S), ResultIndex(PseudoObjectExpr::NoResult), 1644b9c2d235fb9449e249d74f48ecfec601650de93John McCall GenericLoc(genericLoc) {} 1654b9c2d235fb9449e249d74f48ecfec601650de93John McCall 1661aa1721f14f2162811f5393dbd84e01eadc2c963Matt Beaumont-Gay virtual ~PseudoOpBuilder() {} 1671aa1721f14f2162811f5393dbd84e01eadc2c963Matt Beaumont-Gay 1684b9c2d235fb9449e249d74f48ecfec601650de93John McCall /// Add a normal semantic expression. 1694b9c2d235fb9449e249d74f48ecfec601650de93John McCall void addSemanticExpr(Expr *semantic) { 1704b9c2d235fb9449e249d74f48ecfec601650de93John McCall Semantics.push_back(semantic); 1714b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 1724b9c2d235fb9449e249d74f48ecfec601650de93John McCall 1734b9c2d235fb9449e249d74f48ecfec601650de93John McCall /// Add the 'result' semantic expression. 1744b9c2d235fb9449e249d74f48ecfec601650de93John McCall void addResultSemanticExpr(Expr *resultExpr) { 1754b9c2d235fb9449e249d74f48ecfec601650de93John McCall assert(ResultIndex == PseudoObjectExpr::NoResult); 1764b9c2d235fb9449e249d74f48ecfec601650de93John McCall ResultIndex = Semantics.size(); 1774b9c2d235fb9449e249d74f48ecfec601650de93John McCall Semantics.push_back(resultExpr); 1784b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 1794b9c2d235fb9449e249d74f48ecfec601650de93John McCall 1804b9c2d235fb9449e249d74f48ecfec601650de93John McCall ExprResult buildRValueOperation(Expr *op); 1814b9c2d235fb9449e249d74f48ecfec601650de93John McCall ExprResult buildAssignmentOperation(Scope *Sc, 1824b9c2d235fb9449e249d74f48ecfec601650de93John McCall SourceLocation opLoc, 1834b9c2d235fb9449e249d74f48ecfec601650de93John McCall BinaryOperatorKind opcode, 1844b9c2d235fb9449e249d74f48ecfec601650de93John McCall Expr *LHS, Expr *RHS); 1854b9c2d235fb9449e249d74f48ecfec601650de93John McCall ExprResult buildIncDecOperation(Scope *Sc, SourceLocation opLoc, 1864b9c2d235fb9449e249d74f48ecfec601650de93John McCall UnaryOperatorKind opcode, 1874b9c2d235fb9449e249d74f48ecfec601650de93John McCall Expr *op); 1884b9c2d235fb9449e249d74f48ecfec601650de93John McCall 1894b9c2d235fb9449e249d74f48ecfec601650de93John McCall ExprResult complete(Expr *syntacticForm); 1904b9c2d235fb9449e249d74f48ecfec601650de93John McCall 1914b9c2d235fb9449e249d74f48ecfec601650de93John McCall OpaqueValueExpr *capture(Expr *op); 1924b9c2d235fb9449e249d74f48ecfec601650de93John McCall OpaqueValueExpr *captureValueAsResult(Expr *op); 1934b9c2d235fb9449e249d74f48ecfec601650de93John McCall 1944b9c2d235fb9449e249d74f48ecfec601650de93John McCall void setResultToLastSemantic() { 1954b9c2d235fb9449e249d74f48ecfec601650de93John McCall assert(ResultIndex == PseudoObjectExpr::NoResult); 1964b9c2d235fb9449e249d74f48ecfec601650de93John McCall ResultIndex = Semantics.size() - 1; 1974b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 1984b9c2d235fb9449e249d74f48ecfec601650de93John McCall 1994b9c2d235fb9449e249d74f48ecfec601650de93John McCall /// Return true if assignments have a non-void result. 2004b9c2d235fb9449e249d74f48ecfec601650de93John McCall virtual bool assignmentsHaveResult() { return true; } 2014b9c2d235fb9449e249d74f48ecfec601650de93John McCall 2024b9c2d235fb9449e249d74f48ecfec601650de93John McCall virtual Expr *rebuildAndCaptureObject(Expr *) = 0; 2034b9c2d235fb9449e249d74f48ecfec601650de93John McCall virtual ExprResult buildGet() = 0; 2044b9c2d235fb9449e249d74f48ecfec601650de93John McCall virtual ExprResult buildSet(Expr *, SourceLocation, 2054b9c2d235fb9449e249d74f48ecfec601650de93John McCall bool captureSetValueAsResult) = 0; 2064b9c2d235fb9449e249d74f48ecfec601650de93John McCall }; 2074b9c2d235fb9449e249d74f48ecfec601650de93John McCall 2084b9c2d235fb9449e249d74f48ecfec601650de93John McCall /// A PseudoOpBuilder for Objective-C @properties. 2094b9c2d235fb9449e249d74f48ecfec601650de93John McCall class ObjCPropertyOpBuilder : public PseudoOpBuilder { 2104b9c2d235fb9449e249d74f48ecfec601650de93John McCall ObjCPropertyRefExpr *RefExpr; 211b085d898bdfe35097eba45f4072b0f6865f561dcArgyrios Kyrtzidis ObjCPropertyRefExpr *SyntacticRefExpr; 2124b9c2d235fb9449e249d74f48ecfec601650de93John McCall OpaqueValueExpr *InstanceReceiver; 2134b9c2d235fb9449e249d74f48ecfec601650de93John McCall ObjCMethodDecl *Getter; 2144b9c2d235fb9449e249d74f48ecfec601650de93John McCall 2154b9c2d235fb9449e249d74f48ecfec601650de93John McCall ObjCMethodDecl *Setter; 2164b9c2d235fb9449e249d74f48ecfec601650de93John McCall Selector SetterSelector; 217a2c91e75c944e3599fb108db600f91c47c8b4342Fariborz Jahanian Selector GetterSelector; 2184b9c2d235fb9449e249d74f48ecfec601650de93John McCall 2194b9c2d235fb9449e249d74f48ecfec601650de93John McCall public: 2204b9c2d235fb9449e249d74f48ecfec601650de93John McCall ObjCPropertyOpBuilder(Sema &S, ObjCPropertyRefExpr *refExpr) : 2214b9c2d235fb9449e249d74f48ecfec601650de93John McCall PseudoOpBuilder(S, refExpr->getLocation()), RefExpr(refExpr), 222b085d898bdfe35097eba45f4072b0f6865f561dcArgyrios Kyrtzidis SyntacticRefExpr(0), InstanceReceiver(0), Getter(0), Setter(0) { 2234b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 2244b9c2d235fb9449e249d74f48ecfec601650de93John McCall 2254b9c2d235fb9449e249d74f48ecfec601650de93John McCall ExprResult buildRValueOperation(Expr *op); 2264b9c2d235fb9449e249d74f48ecfec601650de93John McCall ExprResult buildAssignmentOperation(Scope *Sc, 2274b9c2d235fb9449e249d74f48ecfec601650de93John McCall SourceLocation opLoc, 2284b9c2d235fb9449e249d74f48ecfec601650de93John McCall BinaryOperatorKind opcode, 2294b9c2d235fb9449e249d74f48ecfec601650de93John McCall Expr *LHS, Expr *RHS); 2304b9c2d235fb9449e249d74f48ecfec601650de93John McCall ExprResult buildIncDecOperation(Scope *Sc, SourceLocation opLoc, 2314b9c2d235fb9449e249d74f48ecfec601650de93John McCall UnaryOperatorKind opcode, 2324b9c2d235fb9449e249d74f48ecfec601650de93John McCall Expr *op); 2334b9c2d235fb9449e249d74f48ecfec601650de93John McCall 2344b9c2d235fb9449e249d74f48ecfec601650de93John McCall bool tryBuildGetOfReference(Expr *op, ExprResult &result); 2354b9c2d235fb9449e249d74f48ecfec601650de93John McCall bool findSetter(); 2364b9c2d235fb9449e249d74f48ecfec601650de93John McCall bool findGetter(); 2374b9c2d235fb9449e249d74f48ecfec601650de93John McCall 2384b9c2d235fb9449e249d74f48ecfec601650de93John McCall Expr *rebuildAndCaptureObject(Expr *syntacticBase); 2394b9c2d235fb9449e249d74f48ecfec601650de93John McCall ExprResult buildGet(); 2404b9c2d235fb9449e249d74f48ecfec601650de93John McCall ExprResult buildSet(Expr *op, SourceLocation, bool); 2414b9c2d235fb9449e249d74f48ecfec601650de93John McCall }; 242ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 243ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek /// A PseudoOpBuilder for Objective-C array/dictionary indexing. 244ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek class ObjCSubscriptOpBuilder : public PseudoOpBuilder { 245ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ObjCSubscriptRefExpr *RefExpr; 246ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek OpaqueValueExpr *InstanceBase; 247ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek OpaqueValueExpr *InstanceKey; 248ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ObjCMethodDecl *AtIndexGetter; 249ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Selector AtIndexGetterSelector; 250ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 251ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ObjCMethodDecl *AtIndexSetter; 252ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Selector AtIndexSetterSelector; 253ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 254ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek public: 255ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ObjCSubscriptOpBuilder(Sema &S, ObjCSubscriptRefExpr *refExpr) : 256ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek PseudoOpBuilder(S, refExpr->getSourceRange().getBegin()), 257ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek RefExpr(refExpr), 258ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek InstanceBase(0), InstanceKey(0), 259ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek AtIndexGetter(0), AtIndexSetter(0) { } 260ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 261ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ExprResult buildRValueOperation(Expr *op); 262ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ExprResult buildAssignmentOperation(Scope *Sc, 263ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek SourceLocation opLoc, 264ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek BinaryOperatorKind opcode, 265ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Expr *LHS, Expr *RHS); 266ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Expr *rebuildAndCaptureObject(Expr *syntacticBase); 267ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 268ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek bool findAtIndexGetter(); 269ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek bool findAtIndexSetter(); 270ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 271ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ExprResult buildGet(); 272ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ExprResult buildSet(Expr *op, SourceLocation, bool); 273ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek }; 274ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 2754b9c2d235fb9449e249d74f48ecfec601650de93John McCall} 2764b9c2d235fb9449e249d74f48ecfec601650de93John McCall 2774b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// Capture the given expression in an OpaqueValueExpr. 2784b9c2d235fb9449e249d74f48ecfec601650de93John McCallOpaqueValueExpr *PseudoOpBuilder::capture(Expr *e) { 2794b9c2d235fb9449e249d74f48ecfec601650de93John McCall // Make a new OVE whose source is the given expression. 2804b9c2d235fb9449e249d74f48ecfec601650de93John McCall OpaqueValueExpr *captured = 2814b9c2d235fb9449e249d74f48ecfec601650de93John McCall new (S.Context) OpaqueValueExpr(GenericLoc, e->getType(), 28297df54e0c075bc8d6a869597e771dad0c11a2180Douglas Gregor e->getValueKind(), e->getObjectKind(), 28397df54e0c075bc8d6a869597e771dad0c11a2180Douglas Gregor e); 2844b9c2d235fb9449e249d74f48ecfec601650de93John McCall 2854b9c2d235fb9449e249d74f48ecfec601650de93John McCall // Make sure we bind that in the semantics. 2864b9c2d235fb9449e249d74f48ecfec601650de93John McCall addSemanticExpr(captured); 2874b9c2d235fb9449e249d74f48ecfec601650de93John McCall return captured; 2884b9c2d235fb9449e249d74f48ecfec601650de93John McCall} 2894b9c2d235fb9449e249d74f48ecfec601650de93John McCall 2904b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// Capture the given expression as the result of this pseudo-object 2914b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// operation. This routine is safe against expressions which may 2924b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// already be captured. 2934b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// 2944b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// \param Returns the captured expression, which will be the 2954b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// same as the input if the input was already captured 2964b9c2d235fb9449e249d74f48ecfec601650de93John McCallOpaqueValueExpr *PseudoOpBuilder::captureValueAsResult(Expr *e) { 2974b9c2d235fb9449e249d74f48ecfec601650de93John McCall assert(ResultIndex == PseudoObjectExpr::NoResult); 2984b9c2d235fb9449e249d74f48ecfec601650de93John McCall 2994b9c2d235fb9449e249d74f48ecfec601650de93John McCall // If the expression hasn't already been captured, just capture it 3004b9c2d235fb9449e249d74f48ecfec601650de93John McCall // and set the new semantic 3014b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (!isa<OpaqueValueExpr>(e)) { 3024b9c2d235fb9449e249d74f48ecfec601650de93John McCall OpaqueValueExpr *cap = capture(e); 3034b9c2d235fb9449e249d74f48ecfec601650de93John McCall setResultToLastSemantic(); 3044b9c2d235fb9449e249d74f48ecfec601650de93John McCall return cap; 3054b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 3064b9c2d235fb9449e249d74f48ecfec601650de93John McCall 3074b9c2d235fb9449e249d74f48ecfec601650de93John McCall // Otherwise, it must already be one of our semantic expressions; 3084b9c2d235fb9449e249d74f48ecfec601650de93John McCall // set ResultIndex to its index. 3094b9c2d235fb9449e249d74f48ecfec601650de93John McCall unsigned index = 0; 3104b9c2d235fb9449e249d74f48ecfec601650de93John McCall for (;; ++index) { 3114b9c2d235fb9449e249d74f48ecfec601650de93John McCall assert(index < Semantics.size() && 3124b9c2d235fb9449e249d74f48ecfec601650de93John McCall "captured expression not found in semantics!"); 3134b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (e == Semantics[index]) break; 3144b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 3154b9c2d235fb9449e249d74f48ecfec601650de93John McCall ResultIndex = index; 3164b9c2d235fb9449e249d74f48ecfec601650de93John McCall return cast<OpaqueValueExpr>(e); 3174b9c2d235fb9449e249d74f48ecfec601650de93John McCall} 3184b9c2d235fb9449e249d74f48ecfec601650de93John McCall 3194b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// The routine which creates the final PseudoObjectExpr. 3204b9c2d235fb9449e249d74f48ecfec601650de93John McCallExprResult PseudoOpBuilder::complete(Expr *syntactic) { 3214b9c2d235fb9449e249d74f48ecfec601650de93John McCall return PseudoObjectExpr::Create(S.Context, syntactic, 3224b9c2d235fb9449e249d74f48ecfec601650de93John McCall Semantics, ResultIndex); 3234b9c2d235fb9449e249d74f48ecfec601650de93John McCall} 3244b9c2d235fb9449e249d74f48ecfec601650de93John McCall 3254b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// The main skeleton for building an r-value operation. 3264b9c2d235fb9449e249d74f48ecfec601650de93John McCallExprResult PseudoOpBuilder::buildRValueOperation(Expr *op) { 3274b9c2d235fb9449e249d74f48ecfec601650de93John McCall Expr *syntacticBase = rebuildAndCaptureObject(op); 3284b9c2d235fb9449e249d74f48ecfec601650de93John McCall 3294b9c2d235fb9449e249d74f48ecfec601650de93John McCall ExprResult getExpr = buildGet(); 3304b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (getExpr.isInvalid()) return ExprError(); 3314b9c2d235fb9449e249d74f48ecfec601650de93John McCall addResultSemanticExpr(getExpr.take()); 3324b9c2d235fb9449e249d74f48ecfec601650de93John McCall 3334b9c2d235fb9449e249d74f48ecfec601650de93John McCall return complete(syntacticBase); 3344b9c2d235fb9449e249d74f48ecfec601650de93John McCall} 3354b9c2d235fb9449e249d74f48ecfec601650de93John McCall 3364b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// The basic skeleton for building a simple or compound 3374b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// assignment operation. 3384b9c2d235fb9449e249d74f48ecfec601650de93John McCallExprResult 3394b9c2d235fb9449e249d74f48ecfec601650de93John McCallPseudoOpBuilder::buildAssignmentOperation(Scope *Sc, SourceLocation opcLoc, 3404b9c2d235fb9449e249d74f48ecfec601650de93John McCall BinaryOperatorKind opcode, 3414b9c2d235fb9449e249d74f48ecfec601650de93John McCall Expr *LHS, Expr *RHS) { 3424b9c2d235fb9449e249d74f48ecfec601650de93John McCall assert(BinaryOperator::isAssignmentOp(opcode)); 3434b9c2d235fb9449e249d74f48ecfec601650de93John McCall 3444b9c2d235fb9449e249d74f48ecfec601650de93John McCall Expr *syntacticLHS = rebuildAndCaptureObject(LHS); 3454b9c2d235fb9449e249d74f48ecfec601650de93John McCall OpaqueValueExpr *capturedRHS = capture(RHS); 3464b9c2d235fb9449e249d74f48ecfec601650de93John McCall 3474b9c2d235fb9449e249d74f48ecfec601650de93John McCall Expr *syntactic; 3484b9c2d235fb9449e249d74f48ecfec601650de93John McCall 3494b9c2d235fb9449e249d74f48ecfec601650de93John McCall ExprResult result; 3504b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (opcode == BO_Assign) { 3514b9c2d235fb9449e249d74f48ecfec601650de93John McCall result = capturedRHS; 3524b9c2d235fb9449e249d74f48ecfec601650de93John McCall syntactic = new (S.Context) BinaryOperator(syntacticLHS, capturedRHS, 3534b9c2d235fb9449e249d74f48ecfec601650de93John McCall opcode, capturedRHS->getType(), 3544b9c2d235fb9449e249d74f48ecfec601650de93John McCall capturedRHS->getValueKind(), 3554b9c2d235fb9449e249d74f48ecfec601650de93John McCall OK_Ordinary, opcLoc); 3564b9c2d235fb9449e249d74f48ecfec601650de93John McCall } else { 3574b9c2d235fb9449e249d74f48ecfec601650de93John McCall ExprResult opLHS = buildGet(); 3584b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (opLHS.isInvalid()) return ExprError(); 3594b9c2d235fb9449e249d74f48ecfec601650de93John McCall 3604b9c2d235fb9449e249d74f48ecfec601650de93John McCall // Build an ordinary, non-compound operation. 3614b9c2d235fb9449e249d74f48ecfec601650de93John McCall BinaryOperatorKind nonCompound = 3624b9c2d235fb9449e249d74f48ecfec601650de93John McCall BinaryOperator::getOpForCompoundAssignment(opcode); 3634b9c2d235fb9449e249d74f48ecfec601650de93John McCall result = S.BuildBinOp(Sc, opcLoc, nonCompound, 3644b9c2d235fb9449e249d74f48ecfec601650de93John McCall opLHS.take(), capturedRHS); 3654b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (result.isInvalid()) return ExprError(); 3664b9c2d235fb9449e249d74f48ecfec601650de93John McCall 3674b9c2d235fb9449e249d74f48ecfec601650de93John McCall syntactic = 3684b9c2d235fb9449e249d74f48ecfec601650de93John McCall new (S.Context) CompoundAssignOperator(syntacticLHS, capturedRHS, opcode, 3694b9c2d235fb9449e249d74f48ecfec601650de93John McCall result.get()->getType(), 3704b9c2d235fb9449e249d74f48ecfec601650de93John McCall result.get()->getValueKind(), 3714b9c2d235fb9449e249d74f48ecfec601650de93John McCall OK_Ordinary, 3724b9c2d235fb9449e249d74f48ecfec601650de93John McCall opLHS.get()->getType(), 3734b9c2d235fb9449e249d74f48ecfec601650de93John McCall result.get()->getType(), 3744b9c2d235fb9449e249d74f48ecfec601650de93John McCall opcLoc); 3754b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 3764b9c2d235fb9449e249d74f48ecfec601650de93John McCall 3774b9c2d235fb9449e249d74f48ecfec601650de93John McCall // The result of the assignment, if not void, is the value set into 3784b9c2d235fb9449e249d74f48ecfec601650de93John McCall // the l-value. 3794b9c2d235fb9449e249d74f48ecfec601650de93John McCall result = buildSet(result.take(), opcLoc, assignmentsHaveResult()); 3804b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (result.isInvalid()) return ExprError(); 3814b9c2d235fb9449e249d74f48ecfec601650de93John McCall addSemanticExpr(result.take()); 3824b9c2d235fb9449e249d74f48ecfec601650de93John McCall 3834b9c2d235fb9449e249d74f48ecfec601650de93John McCall return complete(syntactic); 3844b9c2d235fb9449e249d74f48ecfec601650de93John McCall} 3854b9c2d235fb9449e249d74f48ecfec601650de93John McCall 3864b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// The basic skeleton for building an increment or decrement 3874b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// operation. 3884b9c2d235fb9449e249d74f48ecfec601650de93John McCallExprResult 3894b9c2d235fb9449e249d74f48ecfec601650de93John McCallPseudoOpBuilder::buildIncDecOperation(Scope *Sc, SourceLocation opcLoc, 3904b9c2d235fb9449e249d74f48ecfec601650de93John McCall UnaryOperatorKind opcode, 3914b9c2d235fb9449e249d74f48ecfec601650de93John McCall Expr *op) { 3924b9c2d235fb9449e249d74f48ecfec601650de93John McCall assert(UnaryOperator::isIncrementDecrementOp(opcode)); 3934b9c2d235fb9449e249d74f48ecfec601650de93John McCall 3944b9c2d235fb9449e249d74f48ecfec601650de93John McCall Expr *syntacticOp = rebuildAndCaptureObject(op); 3954b9c2d235fb9449e249d74f48ecfec601650de93John McCall 3964b9c2d235fb9449e249d74f48ecfec601650de93John McCall // Load the value. 3974b9c2d235fb9449e249d74f48ecfec601650de93John McCall ExprResult result = buildGet(); 3984b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (result.isInvalid()) return ExprError(); 3994b9c2d235fb9449e249d74f48ecfec601650de93John McCall 4004b9c2d235fb9449e249d74f48ecfec601650de93John McCall QualType resultType = result.get()->getType(); 4014b9c2d235fb9449e249d74f48ecfec601650de93John McCall 4024b9c2d235fb9449e249d74f48ecfec601650de93John McCall // That's the postfix result. 4034b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (UnaryOperator::isPostfix(opcode) && assignmentsHaveResult()) { 4044b9c2d235fb9449e249d74f48ecfec601650de93John McCall result = capture(result.take()); 4054b9c2d235fb9449e249d74f48ecfec601650de93John McCall setResultToLastSemantic(); 4064b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 4074b9c2d235fb9449e249d74f48ecfec601650de93John McCall 4084b9c2d235fb9449e249d74f48ecfec601650de93John McCall // Add or subtract a literal 1. 4094b9c2d235fb9449e249d74f48ecfec601650de93John McCall llvm::APInt oneV(S.Context.getTypeSize(S.Context.IntTy), 1); 4104b9c2d235fb9449e249d74f48ecfec601650de93John McCall Expr *one = IntegerLiteral::Create(S.Context, oneV, S.Context.IntTy, 4114b9c2d235fb9449e249d74f48ecfec601650de93John McCall GenericLoc); 4124b9c2d235fb9449e249d74f48ecfec601650de93John McCall 4134b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (UnaryOperator::isIncrementOp(opcode)) { 4144b9c2d235fb9449e249d74f48ecfec601650de93John McCall result = S.BuildBinOp(Sc, opcLoc, BO_Add, result.take(), one); 4154b9c2d235fb9449e249d74f48ecfec601650de93John McCall } else { 4164b9c2d235fb9449e249d74f48ecfec601650de93John McCall result = S.BuildBinOp(Sc, opcLoc, BO_Sub, result.take(), one); 4174b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 4184b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (result.isInvalid()) return ExprError(); 4194b9c2d235fb9449e249d74f48ecfec601650de93John McCall 4204b9c2d235fb9449e249d74f48ecfec601650de93John McCall // Store that back into the result. The value stored is the result 4214b9c2d235fb9449e249d74f48ecfec601650de93John McCall // of a prefix operation. 4224b9c2d235fb9449e249d74f48ecfec601650de93John McCall result = buildSet(result.take(), opcLoc, 4234b9c2d235fb9449e249d74f48ecfec601650de93John McCall UnaryOperator::isPrefix(opcode) && assignmentsHaveResult()); 4244b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (result.isInvalid()) return ExprError(); 4254b9c2d235fb9449e249d74f48ecfec601650de93John McCall addSemanticExpr(result.take()); 4264b9c2d235fb9449e249d74f48ecfec601650de93John McCall 4274b9c2d235fb9449e249d74f48ecfec601650de93John McCall UnaryOperator *syntactic = 4284b9c2d235fb9449e249d74f48ecfec601650de93John McCall new (S.Context) UnaryOperator(syntacticOp, opcode, resultType, 4294b9c2d235fb9449e249d74f48ecfec601650de93John McCall VK_LValue, OK_Ordinary, opcLoc); 4304b9c2d235fb9449e249d74f48ecfec601650de93John McCall return complete(syntactic); 4314b9c2d235fb9449e249d74f48ecfec601650de93John McCall} 4324b9c2d235fb9449e249d74f48ecfec601650de93John McCall 4334b9c2d235fb9449e249d74f48ecfec601650de93John McCall 4344b9c2d235fb9449e249d74f48ecfec601650de93John McCall//===----------------------------------------------------------------------===// 4354b9c2d235fb9449e249d74f48ecfec601650de93John McCall// Objective-C @property and implicit property references 4364b9c2d235fb9449e249d74f48ecfec601650de93John McCall//===----------------------------------------------------------------------===// 4374b9c2d235fb9449e249d74f48ecfec601650de93John McCall 4384b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// Look up a method in the receiver type of an Objective-C property 4394b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// reference. 4403c3b7f90a863af43fa63043d396553ecf205351cJohn McCallstatic ObjCMethodDecl *LookupMethodInReceiverType(Sema &S, Selector sel, 4413c3b7f90a863af43fa63043d396553ecf205351cJohn McCall const ObjCPropertyRefExpr *PRE) { 4423c3b7f90a863af43fa63043d396553ecf205351cJohn McCall if (PRE->isObjectReceiver()) { 443aa9807a85959ffbdc5d9f649d7b24b9b2056d2cdBenjamin Kramer const ObjCObjectPointerType *PT = 444aa9807a85959ffbdc5d9f649d7b24b9b2056d2cdBenjamin Kramer PRE->getBase()->getType()->castAs<ObjCObjectPointerType>(); 4454b9c2d235fb9449e249d74f48ecfec601650de93John McCall 4464b9c2d235fb9449e249d74f48ecfec601650de93John McCall // Special case for 'self' in class method implementations. 4474b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (PT->isObjCClassType() && 4484b9c2d235fb9449e249d74f48ecfec601650de93John McCall S.isSelfExpr(const_cast<Expr*>(PRE->getBase()))) { 4494b9c2d235fb9449e249d74f48ecfec601650de93John McCall // This cast is safe because isSelfExpr is only true within 4504b9c2d235fb9449e249d74f48ecfec601650de93John McCall // methods. 4514b9c2d235fb9449e249d74f48ecfec601650de93John McCall ObjCMethodDecl *method = 4524b9c2d235fb9449e249d74f48ecfec601650de93John McCall cast<ObjCMethodDecl>(S.CurContext->getNonClosureAncestor()); 4534b9c2d235fb9449e249d74f48ecfec601650de93John McCall return S.LookupMethodInObjectType(sel, 4544b9c2d235fb9449e249d74f48ecfec601650de93John McCall S.Context.getObjCInterfaceType(method->getClassInterface()), 4554b9c2d235fb9449e249d74f48ecfec601650de93John McCall /*instance*/ false); 4564b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 4574b9c2d235fb9449e249d74f48ecfec601650de93John McCall 458aa9807a85959ffbdc5d9f649d7b24b9b2056d2cdBenjamin Kramer return S.LookupMethodInObjectType(sel, PT->getPointeeType(), true); 4593c3b7f90a863af43fa63043d396553ecf205351cJohn McCall } 4603c3b7f90a863af43fa63043d396553ecf205351cJohn McCall 461aa9807a85959ffbdc5d9f649d7b24b9b2056d2cdBenjamin Kramer if (PRE->isSuperReceiver()) { 462aa9807a85959ffbdc5d9f649d7b24b9b2056d2cdBenjamin Kramer if (const ObjCObjectPointerType *PT = 463aa9807a85959ffbdc5d9f649d7b24b9b2056d2cdBenjamin Kramer PRE->getSuperReceiverType()->getAs<ObjCObjectPointerType>()) 464aa9807a85959ffbdc5d9f649d7b24b9b2056d2cdBenjamin Kramer return S.LookupMethodInObjectType(sel, PT->getPointeeType(), true); 465aa9807a85959ffbdc5d9f649d7b24b9b2056d2cdBenjamin Kramer 466aa9807a85959ffbdc5d9f649d7b24b9b2056d2cdBenjamin Kramer return S.LookupMethodInObjectType(sel, PRE->getSuperReceiverType(), false); 467aa9807a85959ffbdc5d9f649d7b24b9b2056d2cdBenjamin Kramer } 468aa9807a85959ffbdc5d9f649d7b24b9b2056d2cdBenjamin Kramer 469aa9807a85959ffbdc5d9f649d7b24b9b2056d2cdBenjamin Kramer assert(PRE->isClassReceiver() && "Invalid expression"); 470aa9807a85959ffbdc5d9f649d7b24b9b2056d2cdBenjamin Kramer QualType IT = S.Context.getObjCInterfaceType(PRE->getClassReceiver()); 471aa9807a85959ffbdc5d9f649d7b24b9b2056d2cdBenjamin Kramer return S.LookupMethodInObjectType(sel, IT, false); 4723c3b7f90a863af43fa63043d396553ecf205351cJohn McCall} 4733c3b7f90a863af43fa63043d396553ecf205351cJohn McCall 4744b9c2d235fb9449e249d74f48ecfec601650de93John McCallbool ObjCPropertyOpBuilder::findGetter() { 4754b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (Getter) return true; 4764b9c2d235fb9449e249d74f48ecfec601650de93John McCall 477dc4df51d32dea56fbec79037570832dffbcc14e6John McCall // For implicit properties, just trust the lookup we already did. 478dc4df51d32dea56fbec79037570832dffbcc14e6John McCall if (RefExpr->isImplicitProperty()) { 479a2c91e75c944e3599fb108db600f91c47c8b4342Fariborz Jahanian if ((Getter = RefExpr->getImplicitPropertyGetter())) { 480a2c91e75c944e3599fb108db600f91c47c8b4342Fariborz Jahanian GetterSelector = Getter->getSelector(); 481a2c91e75c944e3599fb108db600f91c47c8b4342Fariborz Jahanian return true; 482a2c91e75c944e3599fb108db600f91c47c8b4342Fariborz Jahanian } 483a2c91e75c944e3599fb108db600f91c47c8b4342Fariborz Jahanian else { 484a2c91e75c944e3599fb108db600f91c47c8b4342Fariborz Jahanian // Must build the getter selector the hard way. 485a2c91e75c944e3599fb108db600f91c47c8b4342Fariborz Jahanian ObjCMethodDecl *setter = RefExpr->getImplicitPropertySetter(); 486a2c91e75c944e3599fb108db600f91c47c8b4342Fariborz Jahanian assert(setter && "both setter and getter are null - cannot happen"); 487a2c91e75c944e3599fb108db600f91c47c8b4342Fariborz Jahanian IdentifierInfo *setterName = 488a2c91e75c944e3599fb108db600f91c47c8b4342Fariborz Jahanian setter->getSelector().getIdentifierInfoForSlot(0); 489a2c91e75c944e3599fb108db600f91c47c8b4342Fariborz Jahanian const char *compStr = setterName->getNameStart(); 490a2c91e75c944e3599fb108db600f91c47c8b4342Fariborz Jahanian compStr += 3; 491a2c91e75c944e3599fb108db600f91c47c8b4342Fariborz Jahanian IdentifierInfo *getterName = &S.Context.Idents.get(compStr); 492a2c91e75c944e3599fb108db600f91c47c8b4342Fariborz Jahanian GetterSelector = 493a2c91e75c944e3599fb108db600f91c47c8b4342Fariborz Jahanian S.PP.getSelectorTable().getNullarySelector(getterName); 494a2c91e75c944e3599fb108db600f91c47c8b4342Fariborz Jahanian return false; 495a2c91e75c944e3599fb108db600f91c47c8b4342Fariborz Jahanian 496a2c91e75c944e3599fb108db600f91c47c8b4342Fariborz Jahanian } 497dc4df51d32dea56fbec79037570832dffbcc14e6John McCall } 498dc4df51d32dea56fbec79037570832dffbcc14e6John McCall 499dc4df51d32dea56fbec79037570832dffbcc14e6John McCall ObjCPropertyDecl *prop = RefExpr->getExplicitProperty(); 500dc4df51d32dea56fbec79037570832dffbcc14e6John McCall Getter = LookupMethodInReceiverType(S, prop->getGetterName(), RefExpr); 5014b9c2d235fb9449e249d74f48ecfec601650de93John McCall return (Getter != 0); 5024b9c2d235fb9449e249d74f48ecfec601650de93John McCall} 5034b9c2d235fb9449e249d74f48ecfec601650de93John McCall 5044b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// Try to find the most accurate setter declaration for the property 5054b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// reference. 5064b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// 5074b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// \return true if a setter was found, in which case Setter 5084b9c2d235fb9449e249d74f48ecfec601650de93John McCallbool ObjCPropertyOpBuilder::findSetter() { 5094b9c2d235fb9449e249d74f48ecfec601650de93John McCall // For implicit properties, just trust the lookup we already did. 5104b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (RefExpr->isImplicitProperty()) { 5114b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (ObjCMethodDecl *setter = RefExpr->getImplicitPropertySetter()) { 5124b9c2d235fb9449e249d74f48ecfec601650de93John McCall Setter = setter; 5134b9c2d235fb9449e249d74f48ecfec601650de93John McCall SetterSelector = setter->getSelector(); 5144b9c2d235fb9449e249d74f48ecfec601650de93John McCall return true; 5153c3b7f90a863af43fa63043d396553ecf205351cJohn McCall } else { 5164b9c2d235fb9449e249d74f48ecfec601650de93John McCall IdentifierInfo *getterName = 5174b9c2d235fb9449e249d74f48ecfec601650de93John McCall RefExpr->getImplicitPropertyGetter()->getSelector() 5184b9c2d235fb9449e249d74f48ecfec601650de93John McCall .getIdentifierInfoForSlot(0); 5194b9c2d235fb9449e249d74f48ecfec601650de93John McCall SetterSelector = 5204b9c2d235fb9449e249d74f48ecfec601650de93John McCall SelectorTable::constructSetterName(S.PP.getIdentifierTable(), 5214b9c2d235fb9449e249d74f48ecfec601650de93John McCall S.PP.getSelectorTable(), 5224b9c2d235fb9449e249d74f48ecfec601650de93John McCall getterName); 5234b9c2d235fb9449e249d74f48ecfec601650de93John McCall return false; 5243c3b7f90a863af43fa63043d396553ecf205351cJohn McCall } 5253c3b7f90a863af43fa63043d396553ecf205351cJohn McCall } 5263c3b7f90a863af43fa63043d396553ecf205351cJohn McCall 5274b9c2d235fb9449e249d74f48ecfec601650de93John McCall // For explicit properties, this is more involved. 5284b9c2d235fb9449e249d74f48ecfec601650de93John McCall ObjCPropertyDecl *prop = RefExpr->getExplicitProperty(); 5294b9c2d235fb9449e249d74f48ecfec601650de93John McCall SetterSelector = prop->getSetterName(); 5304b9c2d235fb9449e249d74f48ecfec601650de93John McCall 5314b9c2d235fb9449e249d74f48ecfec601650de93John McCall // Do a normal method lookup first. 5324b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (ObjCMethodDecl *setter = 5334b9c2d235fb9449e249d74f48ecfec601650de93John McCall LookupMethodInReceiverType(S, SetterSelector, RefExpr)) { 5344b9c2d235fb9449e249d74f48ecfec601650de93John McCall Setter = setter; 5354b9c2d235fb9449e249d74f48ecfec601650de93John McCall return true; 5364b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 5374b9c2d235fb9449e249d74f48ecfec601650de93John McCall 5384b9c2d235fb9449e249d74f48ecfec601650de93John McCall // That can fail in the somewhat crazy situation that we're 5394b9c2d235fb9449e249d74f48ecfec601650de93John McCall // type-checking a message send within the @interface declaration 5404b9c2d235fb9449e249d74f48ecfec601650de93John McCall // that declared the @property. But it's not clear that that's 5414b9c2d235fb9449e249d74f48ecfec601650de93John McCall // valuable to support. 5424b9c2d235fb9449e249d74f48ecfec601650de93John McCall 5434b9c2d235fb9449e249d74f48ecfec601650de93John McCall return false; 5444b9c2d235fb9449e249d74f48ecfec601650de93John McCall} 5454b9c2d235fb9449e249d74f48ecfec601650de93John McCall 5464b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// Capture the base object of an Objective-C property expression. 5474b9c2d235fb9449e249d74f48ecfec601650de93John McCallExpr *ObjCPropertyOpBuilder::rebuildAndCaptureObject(Expr *syntacticBase) { 5484b9c2d235fb9449e249d74f48ecfec601650de93John McCall assert(InstanceReceiver == 0); 5494b9c2d235fb9449e249d74f48ecfec601650de93John McCall 5504b9c2d235fb9449e249d74f48ecfec601650de93John McCall // If we have a base, capture it in an OVE and rebuild the syntactic 5514b9c2d235fb9449e249d74f48ecfec601650de93John McCall // form to use the OVE as its base. 5524b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (RefExpr->isObjectReceiver()) { 5534b9c2d235fb9449e249d74f48ecfec601650de93John McCall InstanceReceiver = capture(RefExpr->getBase()); 5544b9c2d235fb9449e249d74f48ecfec601650de93John McCall 5554b9c2d235fb9449e249d74f48ecfec601650de93John McCall syntacticBase = 5564b9c2d235fb9449e249d74f48ecfec601650de93John McCall ObjCPropertyRefRebuilder(S, InstanceReceiver).rebuild(syntacticBase); 5574b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 5584b9c2d235fb9449e249d74f48ecfec601650de93John McCall 559b085d898bdfe35097eba45f4072b0f6865f561dcArgyrios Kyrtzidis if (ObjCPropertyRefExpr * 560b085d898bdfe35097eba45f4072b0f6865f561dcArgyrios Kyrtzidis refE = dyn_cast<ObjCPropertyRefExpr>(syntacticBase->IgnoreParens())) 561b085d898bdfe35097eba45f4072b0f6865f561dcArgyrios Kyrtzidis SyntacticRefExpr = refE; 562b085d898bdfe35097eba45f4072b0f6865f561dcArgyrios Kyrtzidis 5634b9c2d235fb9449e249d74f48ecfec601650de93John McCall return syntacticBase; 5644b9c2d235fb9449e249d74f48ecfec601650de93John McCall} 5654b9c2d235fb9449e249d74f48ecfec601650de93John McCall 5664b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// Load from an Objective-C property reference. 5674b9c2d235fb9449e249d74f48ecfec601650de93John McCallExprResult ObjCPropertyOpBuilder::buildGet() { 5684b9c2d235fb9449e249d74f48ecfec601650de93John McCall findGetter(); 5694b9c2d235fb9449e249d74f48ecfec601650de93John McCall assert(Getter); 570b085d898bdfe35097eba45f4072b0f6865f561dcArgyrios Kyrtzidis 571b085d898bdfe35097eba45f4072b0f6865f561dcArgyrios Kyrtzidis if (SyntacticRefExpr) 572b085d898bdfe35097eba45f4072b0f6865f561dcArgyrios Kyrtzidis SyntacticRefExpr->setIsMessagingGetter(); 573b085d898bdfe35097eba45f4072b0f6865f561dcArgyrios Kyrtzidis 5744b9c2d235fb9449e249d74f48ecfec601650de93John McCall QualType receiverType; 5754b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (RefExpr->isClassReceiver()) { 5764b9c2d235fb9449e249d74f48ecfec601650de93John McCall receiverType = S.Context.getObjCInterfaceType(RefExpr->getClassReceiver()); 5774b9c2d235fb9449e249d74f48ecfec601650de93John McCall } else if (RefExpr->isSuperReceiver()) { 5784b9c2d235fb9449e249d74f48ecfec601650de93John McCall receiverType = RefExpr->getSuperReceiverType(); 5794b9c2d235fb9449e249d74f48ecfec601650de93John McCall } else { 5804b9c2d235fb9449e249d74f48ecfec601650de93John McCall assert(InstanceReceiver); 5814b9c2d235fb9449e249d74f48ecfec601650de93John McCall receiverType = InstanceReceiver->getType(); 5824b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 5833c3b7f90a863af43fa63043d396553ecf205351cJohn McCall 5844b9c2d235fb9449e249d74f48ecfec601650de93John McCall // Build a message-send. 5854b9c2d235fb9449e249d74f48ecfec601650de93John McCall ExprResult msg; 5864b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (Getter->isInstanceMethod() || RefExpr->isObjectReceiver()) { 5874b9c2d235fb9449e249d74f48ecfec601650de93John McCall assert(InstanceReceiver || RefExpr->isSuperReceiver()); 588746f5bcbfde5b25269169c63c66492311673b67dArgyrios Kyrtzidis msg = S.BuildInstanceMessageImplicit(InstanceReceiver, receiverType, 589746f5bcbfde5b25269169c63c66492311673b67dArgyrios Kyrtzidis GenericLoc, Getter->getSelector(), 590746f5bcbfde5b25269169c63c66492311673b67dArgyrios Kyrtzidis Getter, MultiExprArg()); 5914b9c2d235fb9449e249d74f48ecfec601650de93John McCall } else { 592746f5bcbfde5b25269169c63c66492311673b67dArgyrios Kyrtzidis msg = S.BuildClassMessageImplicit(receiverType, RefExpr->isSuperReceiver(), 593746f5bcbfde5b25269169c63c66492311673b67dArgyrios Kyrtzidis GenericLoc, 594746f5bcbfde5b25269169c63c66492311673b67dArgyrios Kyrtzidis Getter->getSelector(), Getter, 595746f5bcbfde5b25269169c63c66492311673b67dArgyrios Kyrtzidis MultiExprArg()); 5964b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 5974b9c2d235fb9449e249d74f48ecfec601650de93John McCall return msg; 5983c3b7f90a863af43fa63043d396553ecf205351cJohn McCall} 5993c3b7f90a863af43fa63043d396553ecf205351cJohn McCall 6004b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// Store to an Objective-C property reference. 6014b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// 6024b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// \param bindSetValueAsResult - If true, capture the actual 6034b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// value being set as the value of the property operation. 6044b9c2d235fb9449e249d74f48ecfec601650de93John McCallExprResult ObjCPropertyOpBuilder::buildSet(Expr *op, SourceLocation opcLoc, 6054b9c2d235fb9449e249d74f48ecfec601650de93John McCall bool captureSetValueAsResult) { 6064b9c2d235fb9449e249d74f48ecfec601650de93John McCall bool hasSetter = findSetter(); 6074b9c2d235fb9449e249d74f48ecfec601650de93John McCall assert(hasSetter); (void) hasSetter; 6084b9c2d235fb9449e249d74f48ecfec601650de93John McCall 609b085d898bdfe35097eba45f4072b0f6865f561dcArgyrios Kyrtzidis if (SyntacticRefExpr) 610b085d898bdfe35097eba45f4072b0f6865f561dcArgyrios Kyrtzidis SyntacticRefExpr->setIsMessagingSetter(); 611b085d898bdfe35097eba45f4072b0f6865f561dcArgyrios Kyrtzidis 6124b9c2d235fb9449e249d74f48ecfec601650de93John McCall QualType receiverType; 6134b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (RefExpr->isClassReceiver()) { 6144b9c2d235fb9449e249d74f48ecfec601650de93John McCall receiverType = S.Context.getObjCInterfaceType(RefExpr->getClassReceiver()); 6154b9c2d235fb9449e249d74f48ecfec601650de93John McCall } else if (RefExpr->isSuperReceiver()) { 6164b9c2d235fb9449e249d74f48ecfec601650de93John McCall receiverType = RefExpr->getSuperReceiverType(); 6174b9c2d235fb9449e249d74f48ecfec601650de93John McCall } else { 6184b9c2d235fb9449e249d74f48ecfec601650de93John McCall assert(InstanceReceiver); 6194b9c2d235fb9449e249d74f48ecfec601650de93John McCall receiverType = InstanceReceiver->getType(); 6204b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 6213c3b7f90a863af43fa63043d396553ecf205351cJohn McCall 6224b9c2d235fb9449e249d74f48ecfec601650de93John McCall // Use assignment constraints when possible; they give us better 6234b9c2d235fb9449e249d74f48ecfec601650de93John McCall // diagnostics. "When possible" basically means anything except a 6244b9c2d235fb9449e249d74f48ecfec601650de93John McCall // C++ class type. 6254e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!S.getLangOpts().CPlusPlus || !op->getType()->isRecordType()) { 6264b9c2d235fb9449e249d74f48ecfec601650de93John McCall QualType paramType = (*Setter->param_begin())->getType(); 6274e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!S.getLangOpts().CPlusPlus || !paramType->isRecordType()) { 6284b9c2d235fb9449e249d74f48ecfec601650de93John McCall ExprResult opResult = op; 6294b9c2d235fb9449e249d74f48ecfec601650de93John McCall Sema::AssignConvertType assignResult 6304b9c2d235fb9449e249d74f48ecfec601650de93John McCall = S.CheckSingleAssignmentConstraints(paramType, opResult); 6314b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (S.DiagnoseAssignmentResult(assignResult, opcLoc, paramType, 6324b9c2d235fb9449e249d74f48ecfec601650de93John McCall op->getType(), opResult.get(), 6334b9c2d235fb9449e249d74f48ecfec601650de93John McCall Sema::AA_Assigning)) 6344b9c2d235fb9449e249d74f48ecfec601650de93John McCall return ExprError(); 6354b9c2d235fb9449e249d74f48ecfec601650de93John McCall 6364b9c2d235fb9449e249d74f48ecfec601650de93John McCall op = opResult.take(); 6374b9c2d235fb9449e249d74f48ecfec601650de93John McCall assert(op && "successful assignment left argument invalid?"); 6383c3b7f90a863af43fa63043d396553ecf205351cJohn McCall } 6394b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 6403c3b7f90a863af43fa63043d396553ecf205351cJohn McCall 6414b9c2d235fb9449e249d74f48ecfec601650de93John McCall // Arguments. 6424b9c2d235fb9449e249d74f48ecfec601650de93John McCall Expr *args[] = { op }; 6433c3b7f90a863af43fa63043d396553ecf205351cJohn McCall 6444b9c2d235fb9449e249d74f48ecfec601650de93John McCall // Build a message-send. 6454b9c2d235fb9449e249d74f48ecfec601650de93John McCall ExprResult msg; 6464b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (Setter->isInstanceMethod() || RefExpr->isObjectReceiver()) { 647746f5bcbfde5b25269169c63c66492311673b67dArgyrios Kyrtzidis msg = S.BuildInstanceMessageImplicit(InstanceReceiver, receiverType, 648746f5bcbfde5b25269169c63c66492311673b67dArgyrios Kyrtzidis GenericLoc, SetterSelector, Setter, 649746f5bcbfde5b25269169c63c66492311673b67dArgyrios Kyrtzidis MultiExprArg(args, 1)); 6504b9c2d235fb9449e249d74f48ecfec601650de93John McCall } else { 651746f5bcbfde5b25269169c63c66492311673b67dArgyrios Kyrtzidis msg = S.BuildClassMessageImplicit(receiverType, RefExpr->isSuperReceiver(), 652746f5bcbfde5b25269169c63c66492311673b67dArgyrios Kyrtzidis GenericLoc, 653746f5bcbfde5b25269169c63c66492311673b67dArgyrios Kyrtzidis SetterSelector, Setter, 654746f5bcbfde5b25269169c63c66492311673b67dArgyrios Kyrtzidis MultiExprArg(args, 1)); 6554b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 6563c3b7f90a863af43fa63043d396553ecf205351cJohn McCall 6574b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (!msg.isInvalid() && captureSetValueAsResult) { 6584b9c2d235fb9449e249d74f48ecfec601650de93John McCall ObjCMessageExpr *msgExpr = 6594b9c2d235fb9449e249d74f48ecfec601650de93John McCall cast<ObjCMessageExpr>(msg.get()->IgnoreImplicit()); 6604b9c2d235fb9449e249d74f48ecfec601650de93John McCall Expr *arg = msgExpr->getArg(0); 6614b9c2d235fb9449e249d74f48ecfec601650de93John McCall msgExpr->setArg(0, captureValueAsResult(arg)); 6624b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 6633c3b7f90a863af43fa63043d396553ecf205351cJohn McCall 6644b9c2d235fb9449e249d74f48ecfec601650de93John McCall return msg; 6654b9c2d235fb9449e249d74f48ecfec601650de93John McCall} 6664b9c2d235fb9449e249d74f48ecfec601650de93John McCall 6674b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// @property-specific behavior for doing lvalue-to-rvalue conversion. 6684b9c2d235fb9449e249d74f48ecfec601650de93John McCallExprResult ObjCPropertyOpBuilder::buildRValueOperation(Expr *op) { 6694b9c2d235fb9449e249d74f48ecfec601650de93John McCall // Explicit properties always have getters, but implicit ones don't. 6704b9c2d235fb9449e249d74f48ecfec601650de93John McCall // Check that before proceeding. 6714b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (RefExpr->isImplicitProperty() && 6724b9c2d235fb9449e249d74f48ecfec601650de93John McCall !RefExpr->getImplicitPropertyGetter()) { 6734b9c2d235fb9449e249d74f48ecfec601650de93John McCall S.Diag(RefExpr->getLocation(), diag::err_getter_not_found) 6744b9c2d235fb9449e249d74f48ecfec601650de93John McCall << RefExpr->getBase()->getType(); 6754b9c2d235fb9449e249d74f48ecfec601650de93John McCall return ExprError(); 6764b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 6774b9c2d235fb9449e249d74f48ecfec601650de93John McCall 6784b9c2d235fb9449e249d74f48ecfec601650de93John McCall ExprResult result = PseudoOpBuilder::buildRValueOperation(op); 6794b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (result.isInvalid()) return ExprError(); 6804b9c2d235fb9449e249d74f48ecfec601650de93John McCall 6814b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (RefExpr->isExplicitProperty() && !Getter->hasRelatedResultType()) 6824b9c2d235fb9449e249d74f48ecfec601650de93John McCall S.DiagnosePropertyAccessorMismatch(RefExpr->getExplicitProperty(), 6834b9c2d235fb9449e249d74f48ecfec601650de93John McCall Getter, RefExpr->getLocation()); 6844b9c2d235fb9449e249d74f48ecfec601650de93John McCall 6854b9c2d235fb9449e249d74f48ecfec601650de93John McCall // As a special case, if the method returns 'id', try to get 6864b9c2d235fb9449e249d74f48ecfec601650de93John McCall // a better type from the property. 6874b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (RefExpr->isExplicitProperty() && result.get()->isRValue() && 6884b9c2d235fb9449e249d74f48ecfec601650de93John McCall result.get()->getType()->isObjCIdType()) { 6894b9c2d235fb9449e249d74f48ecfec601650de93John McCall QualType propType = RefExpr->getExplicitProperty()->getType(); 6904b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (const ObjCObjectPointerType *ptr 6914b9c2d235fb9449e249d74f48ecfec601650de93John McCall = propType->getAs<ObjCObjectPointerType>()) { 6924b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (!ptr->isObjCIdType()) 6934b9c2d235fb9449e249d74f48ecfec601650de93John McCall result = S.ImpCastExprToType(result.get(), propType, CK_BitCast); 6943c3b7f90a863af43fa63043d396553ecf205351cJohn McCall } 6954b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 6964b9c2d235fb9449e249d74f48ecfec601650de93John McCall 6974b9c2d235fb9449e249d74f48ecfec601650de93John McCall return result; 6983c3b7f90a863af43fa63043d396553ecf205351cJohn McCall} 6993c3b7f90a863af43fa63043d396553ecf205351cJohn McCall 7004b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// Try to build this as a call to a getter that returns a reference. 7014b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// 7024b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// \return true if it was possible, whether or not it actually 7034b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// succeeded 7044b9c2d235fb9449e249d74f48ecfec601650de93John McCallbool ObjCPropertyOpBuilder::tryBuildGetOfReference(Expr *op, 7054b9c2d235fb9449e249d74f48ecfec601650de93John McCall ExprResult &result) { 7064e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!S.getLangOpts().CPlusPlus) return false; 7074b9c2d235fb9449e249d74f48ecfec601650de93John McCall 7084b9c2d235fb9449e249d74f48ecfec601650de93John McCall findGetter(); 7094b9c2d235fb9449e249d74f48ecfec601650de93John McCall assert(Getter && "property has no setter and no getter!"); 7104b9c2d235fb9449e249d74f48ecfec601650de93John McCall 7114b9c2d235fb9449e249d74f48ecfec601650de93John McCall // Only do this if the getter returns an l-value reference type. 7124b9c2d235fb9449e249d74f48ecfec601650de93John McCall QualType resultType = Getter->getResultType(); 7134b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (!resultType->isLValueReferenceType()) return false; 7144b9c2d235fb9449e249d74f48ecfec601650de93John McCall 7154b9c2d235fb9449e249d74f48ecfec601650de93John McCall result = buildRValueOperation(op); 7164b9c2d235fb9449e249d74f48ecfec601650de93John McCall return true; 7174b9c2d235fb9449e249d74f48ecfec601650de93John McCall} 7184b9c2d235fb9449e249d74f48ecfec601650de93John McCall 7194b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// @property-specific behavior for doing assignments. 7204b9c2d235fb9449e249d74f48ecfec601650de93John McCallExprResult 7214b9c2d235fb9449e249d74f48ecfec601650de93John McCallObjCPropertyOpBuilder::buildAssignmentOperation(Scope *Sc, 7224b9c2d235fb9449e249d74f48ecfec601650de93John McCall SourceLocation opcLoc, 7234b9c2d235fb9449e249d74f48ecfec601650de93John McCall BinaryOperatorKind opcode, 7244b9c2d235fb9449e249d74f48ecfec601650de93John McCall Expr *LHS, Expr *RHS) { 7254b9c2d235fb9449e249d74f48ecfec601650de93John McCall assert(BinaryOperator::isAssignmentOp(opcode)); 7263c3b7f90a863af43fa63043d396553ecf205351cJohn McCall 7273c3b7f90a863af43fa63043d396553ecf205351cJohn McCall // If there's no setter, we have no choice but to try to assign to 7283c3b7f90a863af43fa63043d396553ecf205351cJohn McCall // the result of the getter. 7294b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (!findSetter()) { 7304b9c2d235fb9449e249d74f48ecfec601650de93John McCall ExprResult result; 7314b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (tryBuildGetOfReference(LHS, result)) { 7324b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (result.isInvalid()) return ExprError(); 7334b9c2d235fb9449e249d74f48ecfec601650de93John McCall return S.BuildBinOp(Sc, opcLoc, opcode, result.take(), RHS); 7343c3b7f90a863af43fa63043d396553ecf205351cJohn McCall } 7353c3b7f90a863af43fa63043d396553ecf205351cJohn McCall 7363c3b7f90a863af43fa63043d396553ecf205351cJohn McCall // Otherwise, it's an error. 7374b9c2d235fb9449e249d74f48ecfec601650de93John McCall S.Diag(opcLoc, diag::err_nosetter_property_assignment) 7384b9c2d235fb9449e249d74f48ecfec601650de93John McCall << unsigned(RefExpr->isImplicitProperty()) 7394b9c2d235fb9449e249d74f48ecfec601650de93John McCall << SetterSelector 7404b9c2d235fb9449e249d74f48ecfec601650de93John McCall << LHS->getSourceRange() << RHS->getSourceRange(); 7413c3b7f90a863af43fa63043d396553ecf205351cJohn McCall return ExprError(); 7423c3b7f90a863af43fa63043d396553ecf205351cJohn McCall } 7433c3b7f90a863af43fa63043d396553ecf205351cJohn McCall 7444b9c2d235fb9449e249d74f48ecfec601650de93John McCall // If there is a setter, we definitely want to use it. 7454b9c2d235fb9449e249d74f48ecfec601650de93John McCall 7464b9c2d235fb9449e249d74f48ecfec601650de93John McCall // Verify that we can do a compound assignment. 7474b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (opcode != BO_Assign && !findGetter()) { 7484b9c2d235fb9449e249d74f48ecfec601650de93John McCall S.Diag(opcLoc, diag::err_nogetter_property_compound_assignment) 7494b9c2d235fb9449e249d74f48ecfec601650de93John McCall << LHS->getSourceRange() << RHS->getSourceRange(); 7503c3b7f90a863af43fa63043d396553ecf205351cJohn McCall return ExprError(); 7513c3b7f90a863af43fa63043d396553ecf205351cJohn McCall } 7523c3b7f90a863af43fa63043d396553ecf205351cJohn McCall 7534b9c2d235fb9449e249d74f48ecfec601650de93John McCall ExprResult result = 7544b9c2d235fb9449e249d74f48ecfec601650de93John McCall PseudoOpBuilder::buildAssignmentOperation(Sc, opcLoc, opcode, LHS, RHS); 7553c3b7f90a863af43fa63043d396553ecf205351cJohn McCall if (result.isInvalid()) return ExprError(); 7563c3b7f90a863af43fa63043d396553ecf205351cJohn McCall 7574b9c2d235fb9449e249d74f48ecfec601650de93John McCall // Various warnings about property assignments in ARC. 7584e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (S.getLangOpts().ObjCAutoRefCount && InstanceReceiver) { 7594b9c2d235fb9449e249d74f48ecfec601650de93John McCall S.checkRetainCycles(InstanceReceiver->getSourceExpr(), RHS); 7604b9c2d235fb9449e249d74f48ecfec601650de93John McCall S.checkUnsafeExprAssigns(opcLoc, LHS, RHS); 7614b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 7624b9c2d235fb9449e249d74f48ecfec601650de93John McCall 7633c3b7f90a863af43fa63043d396553ecf205351cJohn McCall return result; 7643c3b7f90a863af43fa63043d396553ecf205351cJohn McCall} 7653c3b7f90a863af43fa63043d396553ecf205351cJohn McCall 7664b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// @property-specific behavior for doing increments and decrements. 7674b9c2d235fb9449e249d74f48ecfec601650de93John McCallExprResult 7684b9c2d235fb9449e249d74f48ecfec601650de93John McCallObjCPropertyOpBuilder::buildIncDecOperation(Scope *Sc, SourceLocation opcLoc, 7694b9c2d235fb9449e249d74f48ecfec601650de93John McCall UnaryOperatorKind opcode, 7704b9c2d235fb9449e249d74f48ecfec601650de93John McCall Expr *op) { 7713c3b7f90a863af43fa63043d396553ecf205351cJohn McCall // If there's no setter, we have no choice but to try to assign to 7723c3b7f90a863af43fa63043d396553ecf205351cJohn McCall // the result of the getter. 7734b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (!findSetter()) { 7744b9c2d235fb9449e249d74f48ecfec601650de93John McCall ExprResult result; 7754b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (tryBuildGetOfReference(op, result)) { 7764b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (result.isInvalid()) return ExprError(); 7774b9c2d235fb9449e249d74f48ecfec601650de93John McCall return S.BuildUnaryOp(Sc, opcLoc, opcode, result.take()); 7783c3b7f90a863af43fa63043d396553ecf205351cJohn McCall } 7793c3b7f90a863af43fa63043d396553ecf205351cJohn McCall 7803c3b7f90a863af43fa63043d396553ecf205351cJohn McCall // Otherwise, it's an error. 7814b9c2d235fb9449e249d74f48ecfec601650de93John McCall S.Diag(opcLoc, diag::err_nosetter_property_incdec) 7824b9c2d235fb9449e249d74f48ecfec601650de93John McCall << unsigned(RefExpr->isImplicitProperty()) 7834b9c2d235fb9449e249d74f48ecfec601650de93John McCall << unsigned(UnaryOperator::isDecrementOp(opcode)) 7844b9c2d235fb9449e249d74f48ecfec601650de93John McCall << SetterSelector 7854b9c2d235fb9449e249d74f48ecfec601650de93John McCall << op->getSourceRange(); 7863c3b7f90a863af43fa63043d396553ecf205351cJohn McCall return ExprError(); 7873c3b7f90a863af43fa63043d396553ecf205351cJohn McCall } 7883c3b7f90a863af43fa63043d396553ecf205351cJohn McCall 7893c3b7f90a863af43fa63043d396553ecf205351cJohn McCall // If there is a setter, we definitely want to use it. 7903c3b7f90a863af43fa63043d396553ecf205351cJohn McCall 7914b9c2d235fb9449e249d74f48ecfec601650de93John McCall // We also need a getter. 7924b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (!findGetter()) { 7934b9c2d235fb9449e249d74f48ecfec601650de93John McCall assert(RefExpr->isImplicitProperty()); 7944b9c2d235fb9449e249d74f48ecfec601650de93John McCall S.Diag(opcLoc, diag::err_nogetter_property_incdec) 7954b9c2d235fb9449e249d74f48ecfec601650de93John McCall << unsigned(UnaryOperator::isDecrementOp(opcode)) 796a2c91e75c944e3599fb108db600f91c47c8b4342Fariborz Jahanian << GetterSelector 7974b9c2d235fb9449e249d74f48ecfec601650de93John McCall << op->getSourceRange(); 7984b9c2d235fb9449e249d74f48ecfec601650de93John McCall return ExprError(); 7994b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 8003c3b7f90a863af43fa63043d396553ecf205351cJohn McCall 8014b9c2d235fb9449e249d74f48ecfec601650de93John McCall return PseudoOpBuilder::buildIncDecOperation(Sc, opcLoc, opcode, op); 8024b9c2d235fb9449e249d74f48ecfec601650de93John McCall} 8033c3b7f90a863af43fa63043d396553ecf205351cJohn McCall 804ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek// ObjCSubscript build stuff. 805ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek// 806ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 807ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek/// objective-c subscripting-specific behavior for doing lvalue-to-rvalue 808ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek/// conversion. 809ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek/// FIXME. Remove this routine if it is proven that no additional 810ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek/// specifity is needed. 811ebcb57a8d298862c65043e88b2429591ab3c58d3Ted KremenekExprResult ObjCSubscriptOpBuilder::buildRValueOperation(Expr *op) { 812ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ExprResult result = PseudoOpBuilder::buildRValueOperation(op); 813ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (result.isInvalid()) return ExprError(); 814ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return result; 815ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek} 816ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 817ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek/// objective-c subscripting-specific behavior for doing assignments. 818ebcb57a8d298862c65043e88b2429591ab3c58d3Ted KremenekExprResult 819ebcb57a8d298862c65043e88b2429591ab3c58d3Ted KremenekObjCSubscriptOpBuilder::buildAssignmentOperation(Scope *Sc, 820ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek SourceLocation opcLoc, 821ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek BinaryOperatorKind opcode, 822ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Expr *LHS, Expr *RHS) { 823ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek assert(BinaryOperator::isAssignmentOp(opcode)); 824ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // There must be a method to do the Index'ed assignment. 825ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (!findAtIndexSetter()) 826ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return ExprError(); 827ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 828ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // Verify that we can do a compound assignment. 829ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (opcode != BO_Assign && !findAtIndexGetter()) 830ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return ExprError(); 831ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 832ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ExprResult result = 833ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek PseudoOpBuilder::buildAssignmentOperation(Sc, opcLoc, opcode, LHS, RHS); 834ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (result.isInvalid()) return ExprError(); 835ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 836ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // Various warnings about objc Index'ed assignments in ARC. 8374e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (S.getLangOpts().ObjCAutoRefCount && InstanceBase) { 838ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek S.checkRetainCycles(InstanceBase->getSourceExpr(), RHS); 839ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek S.checkUnsafeExprAssigns(opcLoc, LHS, RHS); 840ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 841ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 842ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return result; 843ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek} 844ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 845ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek/// Capture the base object of an Objective-C Index'ed expression. 846ebcb57a8d298862c65043e88b2429591ab3c58d3Ted KremenekExpr *ObjCSubscriptOpBuilder::rebuildAndCaptureObject(Expr *syntacticBase) { 847ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek assert(InstanceBase == 0); 848ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 849ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // Capture base expression in an OVE and rebuild the syntactic 850ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // form to use the OVE as its base expression. 851ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek InstanceBase = capture(RefExpr->getBaseExpr()); 852ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek InstanceKey = capture(RefExpr->getKeyExpr()); 853ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 854ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek syntacticBase = 855ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ObjCSubscriptRefRebuilder(S, InstanceBase, 856ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek InstanceKey).rebuild(syntacticBase); 857ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 858ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return syntacticBase; 859ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek} 860ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 861ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek/// CheckSubscriptingKind - This routine decide what type 862ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek/// of indexing represented by "FromE" is being done. 863ebcb57a8d298862c65043e88b2429591ab3c58d3Ted KremenekSema::ObjCSubscriptKind 864ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Sema::CheckSubscriptingKind(Expr *FromE) { 865ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // If the expression already has integral or enumeration type, we're golden. 866ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek QualType T = FromE->getType(); 867ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (T->isIntegralOrEnumerationType()) 868ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return OS_Array; 869ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 870ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // If we don't have a class type in C++, there's no way we can get an 871ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // expression of integral or enumeration type. 872ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek const RecordType *RecordTy = T->getAs<RecordType>(); 873a78eca20429e55b041bffcea1938cd0df07a6ebdFariborz Jahanian if (!RecordTy && T->isObjCObjectPointerType()) 874ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // All other scalar cases are assumed to be dictionary indexing which 875ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // caller handles, with diagnostics if needed. 876ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return OS_Dictionary; 877a78eca20429e55b041bffcea1938cd0df07a6ebdFariborz Jahanian if (!getLangOpts().CPlusPlus || 878a78eca20429e55b041bffcea1938cd0df07a6ebdFariborz Jahanian !RecordTy || RecordTy->isIncompleteType()) { 879ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // No indexing can be done. Issue diagnostics and quit. 880a78eca20429e55b041bffcea1938cd0df07a6ebdFariborz Jahanian const Expr *IndexExpr = FromE->IgnoreParenImpCasts(); 881a78eca20429e55b041bffcea1938cd0df07a6ebdFariborz Jahanian if (isa<StringLiteral>(IndexExpr)) 882a78eca20429e55b041bffcea1938cd0df07a6ebdFariborz Jahanian Diag(FromE->getExprLoc(), diag::err_objc_subscript_pointer) 883a78eca20429e55b041bffcea1938cd0df07a6ebdFariborz Jahanian << T << FixItHint::CreateInsertion(FromE->getExprLoc(), "@"); 884a78eca20429e55b041bffcea1938cd0df07a6ebdFariborz Jahanian else 885a78eca20429e55b041bffcea1938cd0df07a6ebdFariborz Jahanian Diag(FromE->getExprLoc(), diag::err_objc_subscript_type_conversion) 886a78eca20429e55b041bffcea1938cd0df07a6ebdFariborz Jahanian << T; 887ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return OS_Error; 888ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 889ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 890ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // We must have a complete class type. 891ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (RequireCompleteType(FromE->getExprLoc(), T, 892d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor diag::err_objc_index_incomplete_class_type, FromE)) 893ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return OS_Error; 894ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 895ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // Look for a conversion to an integral, enumeration type, or 896ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // objective-C pointer type. 897ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek UnresolvedSet<4> ViableConversions; 898ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek UnresolvedSet<4> ExplicitConversions; 899ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek const UnresolvedSetImpl *Conversions 900ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek = cast<CXXRecordDecl>(RecordTy->getDecl())->getVisibleConversionFunctions(); 901ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 902ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek int NoIntegrals=0, NoObjCIdPointers=0; 903ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek SmallVector<CXXConversionDecl *, 4> ConversionDecls; 904ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 905ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek for (UnresolvedSetImpl::iterator I = Conversions->begin(), 906ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek E = Conversions->end(); 907ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek I != E; 908ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ++I) { 909ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (CXXConversionDecl *Conversion 910ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek = dyn_cast<CXXConversionDecl>((*I)->getUnderlyingDecl())) { 911ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek QualType CT = Conversion->getConversionType().getNonReferenceType(); 912ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (CT->isIntegralOrEnumerationType()) { 913ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ++NoIntegrals; 914ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ConversionDecls.push_back(Conversion); 915ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 916ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek else if (CT->isObjCIdType() ||CT->isBlockPointerType()) { 917ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ++NoObjCIdPointers; 918ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ConversionDecls.push_back(Conversion); 919ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 920ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 921ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 922ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (NoIntegrals ==1 && NoObjCIdPointers == 0) 923ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return OS_Array; 924ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (NoIntegrals == 0 && NoObjCIdPointers == 1) 925ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return OS_Dictionary; 926ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (NoIntegrals == 0 && NoObjCIdPointers == 0) { 927ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // No conversion function was found. Issue diagnostic and return. 928ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Diag(FromE->getExprLoc(), diag::err_objc_subscript_type_conversion) 929ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek << FromE->getType(); 930ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return OS_Error; 931ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 932ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Diag(FromE->getExprLoc(), diag::err_objc_multiple_subscript_type_conversion) 933ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek << FromE->getType(); 934ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek for (unsigned int i = 0; i < ConversionDecls.size(); i++) 935ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Diag(ConversionDecls[i]->getLocation(), diag::not_conv_function_declared_at); 936ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 937ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return OS_Error; 938ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek} 939ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 940ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenekbool ObjCSubscriptOpBuilder::findAtIndexGetter() { 941ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (AtIndexGetter) 942ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return true; 943ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 944ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Expr *BaseExpr = RefExpr->getBaseExpr(); 945ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek QualType BaseT = BaseExpr->getType(); 946ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 947ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek QualType ResultType; 948ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (const ObjCObjectPointerType *PTy = 949ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek BaseT->getAs<ObjCObjectPointerType>()) { 950ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ResultType = PTy->getPointeeType(); 951ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (const ObjCObjectType *iQFaceTy = 952ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ResultType->getAsObjCQualifiedInterfaceType()) 953ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ResultType = iQFaceTy->getBaseType(); 954ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 955ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Sema::ObjCSubscriptKind Res = 956ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek S.CheckSubscriptingKind(RefExpr->getKeyExpr()); 957ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (Res == Sema::OS_Error) 958ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return false; 959ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek bool arrayRef = (Res == Sema::OS_Array); 960ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 961ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (ResultType.isNull()) { 962ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek S.Diag(BaseExpr->getExprLoc(), diag::err_objc_subscript_base_type) 963ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek << BaseExpr->getType() << arrayRef; 964ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return false; 965ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 966ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (!arrayRef) { 967ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // dictionary subscripting. 968ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // - (id)objectForKeyedSubscript:(id)key; 969ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek IdentifierInfo *KeyIdents[] = { 970ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek &S.Context.Idents.get("objectForKeyedSubscript") 971ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek }; 972ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek AtIndexGetterSelector = S.Context.Selectors.getSelector(1, KeyIdents); 973ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 974ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek else { 975ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // - (id)objectAtIndexedSubscript:(size_t)index; 976ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek IdentifierInfo *KeyIdents[] = { 977ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek &S.Context.Idents.get("objectAtIndexedSubscript") 978ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek }; 979ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 980ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek AtIndexGetterSelector = S.Context.Selectors.getSelector(1, KeyIdents); 981ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 982ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 983ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek AtIndexGetter = S.LookupMethodInObjectType(AtIndexGetterSelector, ResultType, 984ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek true /*instance*/); 985ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek bool receiverIdType = (BaseT->isObjCIdType() || 986ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek BaseT->isObjCQualifiedIdType()); 987ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 9884e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!AtIndexGetter && S.getLangOpts().DebuggerObjCLiteral) { 989ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek AtIndexGetter = ObjCMethodDecl::Create(S.Context, SourceLocation(), 990ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek SourceLocation(), AtIndexGetterSelector, 991ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek S.Context.getObjCIdType() /*ReturnType*/, 992ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 0 /*TypeSourceInfo */, 993ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek S.Context.getTranslationUnitDecl(), 994ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek true /*Instance*/, false/*isVariadic*/, 995ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek /*isSynthesized=*/false, 996ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek /*isImplicitlyDeclared=*/true, /*isDefined=*/false, 997ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ObjCMethodDecl::Required, 998ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek false); 999ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ParmVarDecl *Argument = ParmVarDecl::Create(S.Context, AtIndexGetter, 1000ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek SourceLocation(), SourceLocation(), 1001ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek arrayRef ? &S.Context.Idents.get("index") 1002ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek : &S.Context.Idents.get("key"), 1003ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek arrayRef ? S.Context.UnsignedLongTy 1004ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek : S.Context.getObjCIdType(), 1005ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek /*TInfo=*/0, 1006ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek SC_None, 1007ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek SC_None, 1008ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 0); 1009ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek AtIndexGetter->setMethodParams(S.Context, Argument, 1010ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ArrayRef<SourceLocation>()); 1011ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 1012ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 1013ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (!AtIndexGetter) { 1014ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (!receiverIdType) { 1015ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek S.Diag(BaseExpr->getExprLoc(), diag::err_objc_subscript_method_not_found) 1016ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek << BaseExpr->getType() << 0 << arrayRef; 1017ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return false; 1018ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 1019ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek AtIndexGetter = 1020ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek S.LookupInstanceMethodInGlobalPool(AtIndexGetterSelector, 1021ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek RefExpr->getSourceRange(), 1022ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek true, false); 1023ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 1024ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 1025ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (AtIndexGetter) { 1026ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek QualType T = AtIndexGetter->param_begin()[0]->getType(); 1027ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if ((arrayRef && !T->isIntegralOrEnumerationType()) || 1028ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek (!arrayRef && !T->isObjCObjectPointerType())) { 1029ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek S.Diag(RefExpr->getKeyExpr()->getExprLoc(), 1030ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek arrayRef ? diag::err_objc_subscript_index_type 1031ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek : diag::err_objc_subscript_key_type) << T; 1032ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek S.Diag(AtIndexGetter->param_begin()[0]->getLocation(), 1033ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek diag::note_parameter_type) << T; 1034ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return false; 1035ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 1036ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek QualType R = AtIndexGetter->getResultType(); 1037ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (!R->isObjCObjectPointerType()) { 1038ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek S.Diag(RefExpr->getKeyExpr()->getExprLoc(), 1039ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek diag::err_objc_indexing_method_result_type) << R << arrayRef; 1040ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek S.Diag(AtIndexGetter->getLocation(), diag::note_method_declared_at) << 1041ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek AtIndexGetter->getDeclName(); 1042ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 1043ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 1044ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return true; 1045ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek} 1046ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 1047ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenekbool ObjCSubscriptOpBuilder::findAtIndexSetter() { 1048ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (AtIndexSetter) 1049ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return true; 1050ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 1051ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Expr *BaseExpr = RefExpr->getBaseExpr(); 1052ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek QualType BaseT = BaseExpr->getType(); 1053ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 1054ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek QualType ResultType; 1055ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (const ObjCObjectPointerType *PTy = 1056ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek BaseT->getAs<ObjCObjectPointerType>()) { 1057ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ResultType = PTy->getPointeeType(); 1058ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (const ObjCObjectType *iQFaceTy = 1059ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ResultType->getAsObjCQualifiedInterfaceType()) 1060ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ResultType = iQFaceTy->getBaseType(); 1061ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 1062ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 1063ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Sema::ObjCSubscriptKind Res = 1064ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek S.CheckSubscriptingKind(RefExpr->getKeyExpr()); 1065ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (Res == Sema::OS_Error) 1066ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return false; 1067ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek bool arrayRef = (Res == Sema::OS_Array); 1068ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 1069ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (ResultType.isNull()) { 1070ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek S.Diag(BaseExpr->getExprLoc(), diag::err_objc_subscript_base_type) 1071ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek << BaseExpr->getType() << arrayRef; 1072ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return false; 1073ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 1074ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 1075ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (!arrayRef) { 1076ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // dictionary subscripting. 1077ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // - (void)setObject:(id)object forKeyedSubscript:(id)key; 1078ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek IdentifierInfo *KeyIdents[] = { 1079ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek &S.Context.Idents.get("setObject"), 1080ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek &S.Context.Idents.get("forKeyedSubscript") 1081ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek }; 1082ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek AtIndexSetterSelector = S.Context.Selectors.getSelector(2, KeyIdents); 1083ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 1084ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek else { 1085ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // - (void)setObject:(id)object atIndexedSubscript:(NSInteger)index; 1086ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek IdentifierInfo *KeyIdents[] = { 1087ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek &S.Context.Idents.get("setObject"), 1088ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek &S.Context.Idents.get("atIndexedSubscript") 1089ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek }; 1090ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek AtIndexSetterSelector = S.Context.Selectors.getSelector(2, KeyIdents); 1091ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 1092ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek AtIndexSetter = S.LookupMethodInObjectType(AtIndexSetterSelector, ResultType, 1093ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek true /*instance*/); 1094ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 1095ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek bool receiverIdType = (BaseT->isObjCIdType() || 1096ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek BaseT->isObjCQualifiedIdType()); 1097ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 10984e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!AtIndexSetter && S.getLangOpts().DebuggerObjCLiteral) { 1099ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek TypeSourceInfo *ResultTInfo = 0; 1100ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek QualType ReturnType = S.Context.VoidTy; 1101ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek AtIndexSetter = ObjCMethodDecl::Create(S.Context, SourceLocation(), 1102ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek SourceLocation(), AtIndexSetterSelector, 1103ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ReturnType, 1104ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ResultTInfo, 1105ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek S.Context.getTranslationUnitDecl(), 1106ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek true /*Instance*/, false/*isVariadic*/, 1107ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek /*isSynthesized=*/false, 1108ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek /*isImplicitlyDeclared=*/true, /*isDefined=*/false, 1109ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ObjCMethodDecl::Required, 1110ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek false); 1111ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek SmallVector<ParmVarDecl *, 2> Params; 1112ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ParmVarDecl *object = ParmVarDecl::Create(S.Context, AtIndexSetter, 1113ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek SourceLocation(), SourceLocation(), 1114ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek &S.Context.Idents.get("object"), 1115ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek S.Context.getObjCIdType(), 1116ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek /*TInfo=*/0, 1117ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek SC_None, 1118ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek SC_None, 1119ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 0); 1120ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Params.push_back(object); 1121ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ParmVarDecl *key = ParmVarDecl::Create(S.Context, AtIndexSetter, 1122ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek SourceLocation(), SourceLocation(), 1123ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek arrayRef ? &S.Context.Idents.get("index") 1124ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek : &S.Context.Idents.get("key"), 1125ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek arrayRef ? S.Context.UnsignedLongTy 1126ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek : S.Context.getObjCIdType(), 1127ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek /*TInfo=*/0, 1128ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek SC_None, 1129ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek SC_None, 1130ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 0); 1131ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Params.push_back(key); 1132ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek AtIndexSetter->setMethodParams(S.Context, Params, ArrayRef<SourceLocation>()); 1133ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 1134ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 1135ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (!AtIndexSetter) { 1136ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (!receiverIdType) { 1137ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek S.Diag(BaseExpr->getExprLoc(), 1138ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek diag::err_objc_subscript_method_not_found) 1139ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek << BaseExpr->getType() << 1 << arrayRef; 1140ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return false; 1141ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 1142ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek AtIndexSetter = 1143ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek S.LookupInstanceMethodInGlobalPool(AtIndexSetterSelector, 1144ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek RefExpr->getSourceRange(), 1145ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek true, false); 1146ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 1147ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 1148ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek bool err = false; 1149ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (AtIndexSetter && arrayRef) { 1150ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek QualType T = AtIndexSetter->param_begin()[1]->getType(); 1151ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (!T->isIntegralOrEnumerationType()) { 1152ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek S.Diag(RefExpr->getKeyExpr()->getExprLoc(), 1153ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek diag::err_objc_subscript_index_type) << T; 1154ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek S.Diag(AtIndexSetter->param_begin()[1]->getLocation(), 1155ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek diag::note_parameter_type) << T; 1156ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek err = true; 1157ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 1158ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek T = AtIndexSetter->param_begin()[0]->getType(); 1159ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (!T->isObjCObjectPointerType()) { 1160ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek S.Diag(RefExpr->getBaseExpr()->getExprLoc(), 1161ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek diag::err_objc_subscript_object_type) << T << arrayRef; 1162ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek S.Diag(AtIndexSetter->param_begin()[0]->getLocation(), 1163ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek diag::note_parameter_type) << T; 1164ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek err = true; 1165ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 1166ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 1167ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek else if (AtIndexSetter && !arrayRef) 1168ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek for (unsigned i=0; i <2; i++) { 1169ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek QualType T = AtIndexSetter->param_begin()[i]->getType(); 1170ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (!T->isObjCObjectPointerType()) { 1171ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (i == 1) 1172ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek S.Diag(RefExpr->getKeyExpr()->getExprLoc(), 1173ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek diag::err_objc_subscript_key_type) << T; 1174ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek else 1175ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek S.Diag(RefExpr->getBaseExpr()->getExprLoc(), 1176ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek diag::err_objc_subscript_dic_object_type) << T; 1177ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek S.Diag(AtIndexSetter->param_begin()[i]->getLocation(), 1178ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek diag::note_parameter_type) << T; 1179ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek err = true; 1180ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 1181ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 1182ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 1183ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return !err; 1184ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek} 1185ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 1186ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek// Get the object at "Index" position in the container. 1187ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek// [BaseExpr objectAtIndexedSubscript : IndexExpr]; 1188ebcb57a8d298862c65043e88b2429591ab3c58d3Ted KremenekExprResult ObjCSubscriptOpBuilder::buildGet() { 1189ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (!findAtIndexGetter()) 1190ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return ExprError(); 1191ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 1192ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek QualType receiverType = InstanceBase->getType(); 1193ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 1194ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // Build a message-send. 1195ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ExprResult msg; 1196ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Expr *Index = InstanceKey; 1197ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 1198ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // Arguments. 1199ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Expr *args[] = { Index }; 1200ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek assert(InstanceBase); 1201ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek msg = S.BuildInstanceMessageImplicit(InstanceBase, receiverType, 1202ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek GenericLoc, 1203ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek AtIndexGetterSelector, AtIndexGetter, 1204ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek MultiExprArg(args, 1)); 1205ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return msg; 1206ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek} 1207ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 1208ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek/// Store into the container the "op" object at "Index"'ed location 1209ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek/// by building this messaging expression: 1210ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek/// - (void)setObject:(id)object atIndexedSubscript:(NSInteger)index; 1211ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek/// \param bindSetValueAsResult - If true, capture the actual 1212ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek/// value being set as the value of the property operation. 1213ebcb57a8d298862c65043e88b2429591ab3c58d3Ted KremenekExprResult ObjCSubscriptOpBuilder::buildSet(Expr *op, SourceLocation opcLoc, 1214ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek bool captureSetValueAsResult) { 1215ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (!findAtIndexSetter()) 1216ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return ExprError(); 1217ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 1218ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek QualType receiverType = InstanceBase->getType(); 1219ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Expr *Index = InstanceKey; 1220ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 1221ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // Arguments. 1222ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Expr *args[] = { op, Index }; 1223ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 1224ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek // Build a message-send. 1225ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ExprResult msg = S.BuildInstanceMessageImplicit(InstanceBase, receiverType, 1226ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek GenericLoc, 1227ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek AtIndexSetterSelector, 1228ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek AtIndexSetter, 1229ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek MultiExprArg(args, 2)); 1230ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 1231ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek if (!msg.isInvalid() && captureSetValueAsResult) { 1232ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ObjCMessageExpr *msgExpr = 1233ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek cast<ObjCMessageExpr>(msg.get()->IgnoreImplicit()); 1234ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Expr *arg = msgExpr->getArg(0); 1235ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek msgExpr->setArg(0, captureValueAsResult(arg)); 1236ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 1237ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 1238ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return msg; 1239ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek} 1240ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 12414b9c2d235fb9449e249d74f48ecfec601650de93John McCall//===----------------------------------------------------------------------===// 12424b9c2d235fb9449e249d74f48ecfec601650de93John McCall// General Sema routines. 12434b9c2d235fb9449e249d74f48ecfec601650de93John McCall//===----------------------------------------------------------------------===// 12443c3b7f90a863af43fa63043d396553ecf205351cJohn McCall 12454b9c2d235fb9449e249d74f48ecfec601650de93John McCallExprResult Sema::checkPseudoObjectRValue(Expr *E) { 12464b9c2d235fb9449e249d74f48ecfec601650de93John McCall Expr *opaqueRef = E->IgnoreParens(); 12474b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (ObjCPropertyRefExpr *refExpr 12484b9c2d235fb9449e249d74f48ecfec601650de93John McCall = dyn_cast<ObjCPropertyRefExpr>(opaqueRef)) { 12494b9c2d235fb9449e249d74f48ecfec601650de93John McCall ObjCPropertyOpBuilder builder(*this, refExpr); 12504b9c2d235fb9449e249d74f48ecfec601650de93John McCall return builder.buildRValueOperation(E); 1251ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } 1252ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek else if (ObjCSubscriptRefExpr *refExpr 1253ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek = dyn_cast<ObjCSubscriptRefExpr>(opaqueRef)) { 1254ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ObjCSubscriptOpBuilder builder(*this, refExpr); 1255ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return builder.buildRValueOperation(E); 12564b9c2d235fb9449e249d74f48ecfec601650de93John McCall } else { 12574b9c2d235fb9449e249d74f48ecfec601650de93John McCall llvm_unreachable("unknown pseudo-object kind!"); 12583c3b7f90a863af43fa63043d396553ecf205351cJohn McCall } 12594b9c2d235fb9449e249d74f48ecfec601650de93John McCall} 12603c3b7f90a863af43fa63043d396553ecf205351cJohn McCall 12614b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// Check an increment or decrement of a pseudo-object expression. 12624b9c2d235fb9449e249d74f48ecfec601650de93John McCallExprResult Sema::checkPseudoObjectIncDec(Scope *Sc, SourceLocation opcLoc, 12634b9c2d235fb9449e249d74f48ecfec601650de93John McCall UnaryOperatorKind opcode, Expr *op) { 12644b9c2d235fb9449e249d74f48ecfec601650de93John McCall // Do nothing if the operand is dependent. 12654b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (op->isTypeDependent()) 12664b9c2d235fb9449e249d74f48ecfec601650de93John McCall return new (Context) UnaryOperator(op, opcode, Context.DependentTy, 12674b9c2d235fb9449e249d74f48ecfec601650de93John McCall VK_RValue, OK_Ordinary, opcLoc); 12684b9c2d235fb9449e249d74f48ecfec601650de93John McCall 12694b9c2d235fb9449e249d74f48ecfec601650de93John McCall assert(UnaryOperator::isIncrementDecrementOp(opcode)); 12704b9c2d235fb9449e249d74f48ecfec601650de93John McCall Expr *opaqueRef = op->IgnoreParens(); 12714b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (ObjCPropertyRefExpr *refExpr 12724b9c2d235fb9449e249d74f48ecfec601650de93John McCall = dyn_cast<ObjCPropertyRefExpr>(opaqueRef)) { 12734b9c2d235fb9449e249d74f48ecfec601650de93John McCall ObjCPropertyOpBuilder builder(*this, refExpr); 12744b9c2d235fb9449e249d74f48ecfec601650de93John McCall return builder.buildIncDecOperation(Sc, opcLoc, opcode, op); 1275ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } else if (isa<ObjCSubscriptRefExpr>(opaqueRef)) { 1276ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek Diag(opcLoc, diag::err_illegal_container_subscripting_op); 1277ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return ExprError(); 12784b9c2d235fb9449e249d74f48ecfec601650de93John McCall } else { 12794b9c2d235fb9449e249d74f48ecfec601650de93John McCall llvm_unreachable("unknown pseudo-object kind!"); 12803c3b7f90a863af43fa63043d396553ecf205351cJohn McCall } 12814b9c2d235fb9449e249d74f48ecfec601650de93John McCall} 12823c3b7f90a863af43fa63043d396553ecf205351cJohn McCall 12834b9c2d235fb9449e249d74f48ecfec601650de93John McCallExprResult Sema::checkPseudoObjectAssignment(Scope *S, SourceLocation opcLoc, 12844b9c2d235fb9449e249d74f48ecfec601650de93John McCall BinaryOperatorKind opcode, 12854b9c2d235fb9449e249d74f48ecfec601650de93John McCall Expr *LHS, Expr *RHS) { 12864b9c2d235fb9449e249d74f48ecfec601650de93John McCall // Do nothing if either argument is dependent. 12874b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (LHS->isTypeDependent() || RHS->isTypeDependent()) 12884b9c2d235fb9449e249d74f48ecfec601650de93John McCall return new (Context) BinaryOperator(LHS, RHS, opcode, Context.DependentTy, 12894b9c2d235fb9449e249d74f48ecfec601650de93John McCall VK_RValue, OK_Ordinary, opcLoc); 12904b9c2d235fb9449e249d74f48ecfec601650de93John McCall 12914b9c2d235fb9449e249d74f48ecfec601650de93John McCall // Filter out non-overload placeholder types in the RHS. 129232509f1e60451d86e9fbc473b6e853ba10b5fd1eJohn McCall if (RHS->getType()->isNonOverloadPlaceholderType()) { 129332509f1e60451d86e9fbc473b6e853ba10b5fd1eJohn McCall ExprResult result = CheckPlaceholderExpr(RHS); 129432509f1e60451d86e9fbc473b6e853ba10b5fd1eJohn McCall if (result.isInvalid()) return ExprError(); 129532509f1e60451d86e9fbc473b6e853ba10b5fd1eJohn McCall RHS = result.take(); 12964b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 12973c3b7f90a863af43fa63043d396553ecf205351cJohn McCall 12984b9c2d235fb9449e249d74f48ecfec601650de93John McCall Expr *opaqueRef = LHS->IgnoreParens(); 12994b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (ObjCPropertyRefExpr *refExpr 13004b9c2d235fb9449e249d74f48ecfec601650de93John McCall = dyn_cast<ObjCPropertyRefExpr>(opaqueRef)) { 13014b9c2d235fb9449e249d74f48ecfec601650de93John McCall ObjCPropertyOpBuilder builder(*this, refExpr); 13024b9c2d235fb9449e249d74f48ecfec601650de93John McCall return builder.buildAssignmentOperation(S, opcLoc, opcode, LHS, RHS); 1303ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } else if (ObjCSubscriptRefExpr *refExpr 1304ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek = dyn_cast<ObjCSubscriptRefExpr>(opaqueRef)) { 1305ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek ObjCSubscriptOpBuilder builder(*this, refExpr); 1306ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return builder.buildAssignmentOperation(S, opcLoc, opcode, LHS, RHS); 13074b9c2d235fb9449e249d74f48ecfec601650de93John McCall } else { 13084b9c2d235fb9449e249d74f48ecfec601650de93John McCall llvm_unreachable("unknown pseudo-object kind!"); 13094b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 13103c3b7f90a863af43fa63043d396553ecf205351cJohn McCall} 131101e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall 131201e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall/// Given a pseudo-object reference, rebuild it without the opaque 131301e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall/// values. Basically, undo the behavior of rebuildAndCaptureObject. 131401e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall/// This should never operate in-place. 131501e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCallstatic Expr *stripOpaqueValuesFromPseudoObjectRef(Sema &S, Expr *E) { 131601e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall Expr *opaqueRef = E->IgnoreParens(); 131701e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall if (ObjCPropertyRefExpr *refExpr 131801e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall = dyn_cast<ObjCPropertyRefExpr>(opaqueRef)) { 131988507ddf6f83b929454c04470924cf56b4b8147aDouglas Gregor // Class and super property references don't have opaque values in them. 132088507ddf6f83b929454c04470924cf56b4b8147aDouglas Gregor if (refExpr->isClassReceiver() || refExpr->isSuperReceiver()) 132188507ddf6f83b929454c04470924cf56b4b8147aDouglas Gregor return E; 132288507ddf6f83b929454c04470924cf56b4b8147aDouglas Gregor 132388507ddf6f83b929454c04470924cf56b4b8147aDouglas Gregor assert(refExpr->isObjectReceiver() && "Unknown receiver kind?"); 132488507ddf6f83b929454c04470924cf56b4b8147aDouglas Gregor OpaqueValueExpr *baseOVE = cast<OpaqueValueExpr>(refExpr->getBase()); 132588507ddf6f83b929454c04470924cf56b4b8147aDouglas Gregor return ObjCPropertyRefRebuilder(S, baseOVE->getSourceExpr()).rebuild(E); 1326ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek } else if (ObjCSubscriptRefExpr *refExpr 1327ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek = dyn_cast<ObjCSubscriptRefExpr>(opaqueRef)) { 1328ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek OpaqueValueExpr *baseOVE = cast<OpaqueValueExpr>(refExpr->getBaseExpr()); 1329ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek OpaqueValueExpr *keyOVE = cast<OpaqueValueExpr>(refExpr->getKeyExpr()); 1330ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return ObjCSubscriptRefRebuilder(S, baseOVE->getSourceExpr(), 1331ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek keyOVE->getSourceExpr()).rebuild(E); 133201e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall } else { 133301e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall llvm_unreachable("unknown pseudo-object kind!"); 133401e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall } 133501e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall} 133601e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall 133701e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall/// Given a pseudo-object expression, recreate what it looks like 133801e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall/// syntactically without the attendant OpaqueValueExprs. 133901e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall/// 134001e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall/// This is a hack which should be removed when TreeTransform is 134101e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall/// capable of rebuilding a tree without stripping implicit 134201e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall/// operations. 134301e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCallExpr *Sema::recreateSyntacticForm(PseudoObjectExpr *E) { 134401e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall Expr *syntax = E->getSyntacticForm(); 134501e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall if (UnaryOperator *uop = dyn_cast<UnaryOperator>(syntax)) { 134601e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall Expr *op = stripOpaqueValuesFromPseudoObjectRef(*this, uop->getSubExpr()); 134701e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall return new (Context) UnaryOperator(op, uop->getOpcode(), uop->getType(), 134801e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall uop->getValueKind(), uop->getObjectKind(), 134901e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall uop->getOperatorLoc()); 135001e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall } else if (CompoundAssignOperator *cop 135101e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall = dyn_cast<CompoundAssignOperator>(syntax)) { 135201e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall Expr *lhs = stripOpaqueValuesFromPseudoObjectRef(*this, cop->getLHS()); 135301e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall Expr *rhs = cast<OpaqueValueExpr>(cop->getRHS())->getSourceExpr(); 135401e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall return new (Context) CompoundAssignOperator(lhs, rhs, cop->getOpcode(), 135501e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall cop->getType(), 135601e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall cop->getValueKind(), 135701e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall cop->getObjectKind(), 135801e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall cop->getComputationLHSType(), 135901e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall cop->getComputationResultType(), 136001e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall cop->getOperatorLoc()); 136101e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall } else if (BinaryOperator *bop = dyn_cast<BinaryOperator>(syntax)) { 136201e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall Expr *lhs = stripOpaqueValuesFromPseudoObjectRef(*this, bop->getLHS()); 136301e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall Expr *rhs = cast<OpaqueValueExpr>(bop->getRHS())->getSourceExpr(); 136401e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall return new (Context) BinaryOperator(lhs, rhs, bop->getOpcode(), 136501e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall bop->getType(), bop->getValueKind(), 136601e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall bop->getObjectKind(), 136701e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall bop->getOperatorLoc()); 136801e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall } else { 136901e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall assert(syntax->hasPlaceholderType(BuiltinType::PseudoObject)); 137001e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall return stripOpaqueValuesFromPseudoObjectRef(*this, syntax); 137101e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall } 137201e19be69a37bc4ab7746c454cfaa6aec7bb7c6aJohn McCall} 1373