15f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===--- Expr.h - Classes for representing expressions ----------*- C++ -*-===// 25f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 35f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// The LLVM Compiler Infrastructure 45f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 50bc735ffcfb223c0186419547abaa5c84482663eChris Lattner// This file is distributed under the University of Illinois Open Source 60bc735ffcfb223c0186419547abaa5c84482663eChris Lattner// License. See LICENSE.TXT for details. 75f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 85f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 95f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// This file defines the Expr interface and subclasses. 115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#ifndef LLVM_CLANG_AST_EXPR_H 155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#define LLVM_CLANG_AST_EXPR_H 165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1794deaf675ae60e11c2d9475c6dbfd0c7123160f5Anders Carlsson#include "clang/AST/APValue.h" 1830a2e16f6c27f888dd11eba6bbbae1e980078fcbChandler Carruth#include "clang/AST/ASTVector.h" 19478851c3ed6bd784e7377dffd8e57b200c1b9ba9Benjamin Kramer#include "clang/AST/Decl.h" 20161755a09898c95d21bfff33707da9ca41cd53c5John McCall#include "clang/AST/DeclAccessPair.h" 215baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall#include "clang/AST/OperationKinds.h" 2230a2e16f6c27f888dd11eba6bbbae1e980078fcbChandler Carruth#include "clang/AST/Stmt.h" 2371a7605977113c795edd44fcbd2302ad49506653Argyrios Kyrtzidis#include "clang/AST/TemplateBase.h" 2430a2e16f6c27f888dd11eba6bbbae1e980078fcbChandler Carruth#include "clang/AST/Type.h" 25223f0ff6a9a5d0eaf63b98b3aa92888b4c088868Jordan Rose#include "clang/Basic/CharInfo.h" 26f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne#include "clang/Basic/TypeTraits.h" 27525a05093a4816af961fe2bc6b8a81c17e2e26c2Chris Lattner#include "llvm/ADT/APFloat.h" 2830a2e16f6c27f888dd11eba6bbbae1e980078fcbChandler Carruth#include "llvm/ADT/APSInt.h" 293b8d116703db8018f855cbb4733ace426422623bNate Begeman#include "llvm/ADT/SmallVector.h" 30b648023da23e8b227cdda57a241db4c6f368726bDaniel Dunbar#include "llvm/ADT/StringRef.h" 31aa49a7d70e58dac2aeb40664ba16d2ea571b8c95Daniel Dunbar#include "llvm/Support/Compiler.h" 325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencernamespace clang { 34c44eec6dd29ee9415cbd38a35deff4c8b67abb6aAnders Carlsson class APValue; 359852f58f50b4fc20914fbce5b4454135a42343f4Benjamin Kramer class ASTContext; 3656ee6896f2efebffb4a2cce5a7610cdf1eddbbbeSteve Naroff class BlockDecl; 37409c99edb8b623403fade6f3a9e9c86acda74455Anders Carlsson class CXXBaseSpecifier; 389852f58f50b4fc20914fbce5b4454135a42343f4Benjamin Kramer class CXXMemberCallExpr; 3988a3514f36de96b19cdf50141c640df1a5f13f6cDouglas Gregor class CXXOperatorCallExpr; 409852f58f50b4fc20914fbce5b4454135a42343f4Benjamin Kramer class CastExpr; 419852f58f50b4fc20914fbce5b4454135a42343f4Benjamin Kramer class Decl; 429852f58f50b4fc20914fbce5b4454135a42343f4Benjamin Kramer class IdentifierInfo; 430a7dd835184343ec9149277b668ecdc5d49fe8b0Rafael Espindola class MaterializeTemporaryExpr; 449852f58f50b4fc20914fbce5b4454135a42343f4Benjamin Kramer class NamedDecl; 45f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall class ObjCPropertyRefExpr; 4656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall class OpaqueValueExpr; 479852f58f50b4fc20914fbce5b4454135a42343f4Benjamin Kramer class ParmVarDecl; 489852f58f50b4fc20914fbce5b4454135a42343f4Benjamin Kramer class TargetInfo; 499852f58f50b4fc20914fbce5b4454135a42343f4Benjamin Kramer class ValueDecl; 5088a3514f36de96b19cdf50141c640df1a5f13f6cDouglas Gregor 517ab9d574d27ecee1f130e5755aa403e5ab529b6bAnders Carlsson/// \brief A simple array of base specifiers. 52686775deca8b8685eb90801495880e3abdd844c2Chris Lattnertypedef SmallVector<CXXBaseSpecifier*, 4> CXXCastPath; 537ab9d574d27ecee1f130e5755aa403e5ab529b6bAnders Carlsson 540a7dd835184343ec9149277b668ecdc5d49fe8b0Rafael Espindola/// \brief An adjustment to be made to the temporary created when emitting a 550a7dd835184343ec9149277b668ecdc5d49fe8b0Rafael Espindola/// reference binding, which accesses a particular subobject of that temporary. 560a7dd835184343ec9149277b668ecdc5d49fe8b0Rafael Espindolastruct SubobjectAdjustment { 570a7dd835184343ec9149277b668ecdc5d49fe8b0Rafael Espindola enum { 580a7dd835184343ec9149277b668ecdc5d49fe8b0Rafael Espindola DerivedToBaseAdjustment, 590a7dd835184343ec9149277b668ecdc5d49fe8b0Rafael Espindola FieldAdjustment, 600a7dd835184343ec9149277b668ecdc5d49fe8b0Rafael Espindola MemberPointerAdjustment 610a7dd835184343ec9149277b668ecdc5d49fe8b0Rafael Espindola } Kind; 620a7dd835184343ec9149277b668ecdc5d49fe8b0Rafael Espindola 630a7dd835184343ec9149277b668ecdc5d49fe8b0Rafael Espindola 64e462c60ac3365d3302b7d0a566c5cb7dbe0e5ae3Eric Christopher struct DTB { 65e462c60ac3365d3302b7d0a566c5cb7dbe0e5ae3Eric Christopher const CastExpr *BasePath; 66e462c60ac3365d3302b7d0a566c5cb7dbe0e5ae3Eric Christopher const CXXRecordDecl *DerivedClass; 67e462c60ac3365d3302b7d0a566c5cb7dbe0e5ae3Eric Christopher }; 680a7dd835184343ec9149277b668ecdc5d49fe8b0Rafael Espindola 69e462c60ac3365d3302b7d0a566c5cb7dbe0e5ae3Eric Christopher struct P { 70e462c60ac3365d3302b7d0a566c5cb7dbe0e5ae3Eric Christopher const MemberPointerType *MPT; 71e462c60ac3365d3302b7d0a566c5cb7dbe0e5ae3Eric Christopher Expr *RHS; 72e462c60ac3365d3302b7d0a566c5cb7dbe0e5ae3Eric Christopher }; 73e462c60ac3365d3302b7d0a566c5cb7dbe0e5ae3Eric Christopher 74e462c60ac3365d3302b7d0a566c5cb7dbe0e5ae3Eric Christopher union { 75e462c60ac3365d3302b7d0a566c5cb7dbe0e5ae3Eric Christopher struct DTB DerivedToBase; 76e462c60ac3365d3302b7d0a566c5cb7dbe0e5ae3Eric Christopher FieldDecl *Field; 77e462c60ac3365d3302b7d0a566c5cb7dbe0e5ae3Eric Christopher struct P Ptr; 780a7dd835184343ec9149277b668ecdc5d49fe8b0Rafael Espindola }; 790a7dd835184343ec9149277b668ecdc5d49fe8b0Rafael Espindola 800a7dd835184343ec9149277b668ecdc5d49fe8b0Rafael Espindola SubobjectAdjustment(const CastExpr *BasePath, 810a7dd835184343ec9149277b668ecdc5d49fe8b0Rafael Espindola const CXXRecordDecl *DerivedClass) 820a7dd835184343ec9149277b668ecdc5d49fe8b0Rafael Espindola : Kind(DerivedToBaseAdjustment) { 830a7dd835184343ec9149277b668ecdc5d49fe8b0Rafael Espindola DerivedToBase.BasePath = BasePath; 840a7dd835184343ec9149277b668ecdc5d49fe8b0Rafael Espindola DerivedToBase.DerivedClass = DerivedClass; 850a7dd835184343ec9149277b668ecdc5d49fe8b0Rafael Espindola } 860a7dd835184343ec9149277b668ecdc5d49fe8b0Rafael Espindola 870a7dd835184343ec9149277b668ecdc5d49fe8b0Rafael Espindola SubobjectAdjustment(FieldDecl *Field) 880a7dd835184343ec9149277b668ecdc5d49fe8b0Rafael Espindola : Kind(FieldAdjustment) { 890a7dd835184343ec9149277b668ecdc5d49fe8b0Rafael Espindola this->Field = Field; 900a7dd835184343ec9149277b668ecdc5d49fe8b0Rafael Espindola } 910a7dd835184343ec9149277b668ecdc5d49fe8b0Rafael Espindola 920a7dd835184343ec9149277b668ecdc5d49fe8b0Rafael Espindola SubobjectAdjustment(const MemberPointerType *MPT, Expr *RHS) 930a7dd835184343ec9149277b668ecdc5d49fe8b0Rafael Espindola : Kind(MemberPointerAdjustment) { 940a7dd835184343ec9149277b668ecdc5d49fe8b0Rafael Espindola this->Ptr.MPT = MPT; 950a7dd835184343ec9149277b668ecdc5d49fe8b0Rafael Espindola this->Ptr.RHS = RHS; 960a7dd835184343ec9149277b668ecdc5d49fe8b0Rafael Espindola } 970a7dd835184343ec9149277b668ecdc5d49fe8b0Rafael Espindola}; 980a7dd835184343ec9149277b668ecdc5d49fe8b0Rafael Espindola 995f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// Expr - This represents one expression. Note that Expr's are subclasses of 1005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// Stmt. This allows an expression to be transparently used any place a Stmt 1015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// is required. 1025f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 1035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass Expr : public Stmt { 1045f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer QualType TR; 105898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor 1068e6285af719adc6f86d6faa235d22a08eb68ee3aJohn McCallprotected: 107f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall Expr(StmtClass SC, QualType T, ExprValueKind VK, ExprObjectKind OK, 108ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie bool TD, bool VD, bool ID, bool ContainsUnexpandedParameterPack) 109ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie : Stmt(SC) 110561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor { 1118e6285af719adc6f86d6faa235d22a08eb68ee3aJohn McCall ExprBits.TypeDependent = TD; 1128e6285af719adc6f86d6faa235d22a08eb68ee3aJohn McCall ExprBits.ValueDependent = VD; 113561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor ExprBits.InstantiationDependent = ID; 114f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall ExprBits.ValueKind = VK; 115f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall ExprBits.ObjectKind = OK; 116bebbe0d9b7568ce43a464286bee49429489ef483Douglas Gregor ExprBits.ContainsUnexpandedParameterPack = ContainsUnexpandedParameterPack; 117898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor setType(T); 118898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor } 119898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor 1200b7489194f9f89fac39d57211c1e7953ae50251fDouglas Gregor /// \brief Construct an empty expression. 1210b7489194f9f89fac39d57211c1e7953ae50251fDouglas Gregor explicit Expr(StmtClass SC, EmptyShell) : Stmt(SC) { } 1220b7489194f9f89fac39d57211c1e7953ae50251fDouglas Gregor 1231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumppublic: 124f7c2aa0b049272d8f318988c1965760dcb852578Douglas Gregor QualType getType() const { return TR; } 1251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump void setType(QualType t) { 1269d293dfc0ad7c44ae0b5eb9517f1ed8c8d8b7ff7Douglas Gregor // In C++, the type of an expression is always adjusted so that it 1279d293dfc0ad7c44ae0b5eb9517f1ed8c8d8b7ff7Douglas Gregor // will not have reference type an expression will never have 1289d293dfc0ad7c44ae0b5eb9517f1ed8c8d8b7ff7Douglas Gregor // reference type (C++ [expr]p6). Use 1299d293dfc0ad7c44ae0b5eb9517f1ed8c8d8b7ff7Douglas Gregor // QualType::getNonReferenceType() to retrieve the non-reference 1309d293dfc0ad7c44ae0b5eb9517f1ed8c8d8b7ff7Douglas Gregor // type. Additionally, inspect Expr::isLvalue to determine whether 1319d293dfc0ad7c44ae0b5eb9517f1ed8c8d8b7ff7Douglas Gregor // an expression that is adjusted in this manner should be 1329d293dfc0ad7c44ae0b5eb9517f1ed8c8d8b7ff7Douglas Gregor // considered an lvalue. 133905d11d53aeb6b26744f44fedc2b2820c7a62df6Douglas Gregor assert((t.isNull() || !t->isReferenceType()) && 1348320aaaa01d931aa234fc3bce05b399ef41898d5Daniel Dunbar "Expressions can't have reference type"); 135f7c2aa0b049272d8f318988c1965760dcb852578Douglas Gregor 1361eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump TR = t; 1379d293dfc0ad7c44ae0b5eb9517f1ed8c8d8b7ff7Douglas Gregor } 13877ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek 139898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor /// isValueDependent - Determines whether this expression is 140898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor /// value-dependent (C++ [temp.dep.constexpr]). For example, the 141898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor /// array bound of "Chars" in the following example is 1421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// value-dependent. 143898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor /// @code 144898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor /// template<int Size, char (&Chars)[Size]> struct meta_string; 145898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor /// @endcode 1468e6285af719adc6f86d6faa235d22a08eb68ee3aJohn McCall bool isValueDependent() const { return ExprBits.ValueDependent; } 147898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor 1480b7489194f9f89fac39d57211c1e7953ae50251fDouglas Gregor /// \brief Set whether this expression is value-dependent or not. 149ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie void setValueDependent(bool VD) { 150ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie ExprBits.ValueDependent = VD; 151561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor if (VD) 152561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor ExprBits.InstantiationDependent = true; 153561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor } 1540b7489194f9f89fac39d57211c1e7953ae50251fDouglas Gregor 155898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor /// isTypeDependent - Determines whether this expression is 156898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor /// type-dependent (C++ [temp.dep.expr]), which means that its type 157898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor /// could change from one template instantiation to the next. For 158898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor /// example, the expressions "x" and "x + y" are type-dependent in 159898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor /// the following code, but "y" is not type-dependent: 160898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor /// @code 1611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// template<typename T> 162898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor /// void add(T x, int y) { 163898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor /// x + y; 164898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor /// } 165898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor /// @endcode 1668e6285af719adc6f86d6faa235d22a08eb68ee3aJohn McCall bool isTypeDependent() const { return ExprBits.TypeDependent; } 167898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor 1680b7489194f9f89fac39d57211c1e7953ae50251fDouglas Gregor /// \brief Set whether this expression is type-dependent or not. 169ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie void setTypeDependent(bool TD) { 170ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie ExprBits.TypeDependent = TD; 171561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor if (TD) 172561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor ExprBits.InstantiationDependent = true; 173561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor } 174561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor 175561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor /// \brief Whether this expression is instantiation-dependent, meaning that 176561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor /// it depends in some way on a template parameter, even if neither its type 177561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor /// nor (constant) value can change due to the template instantiation. 178561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor /// 179561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor /// In the following example, the expression \c sizeof(sizeof(T() + T())) is 180561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor /// instantiation-dependent (since it involves a template parameter \c T), but 181561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor /// is neither type- nor value-dependent, since the type of the inner 182561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor /// \c sizeof is known (\c std::size_t) and therefore the size of the outer 183561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor /// \c sizeof is known. 184561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor /// 185561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor /// \code 186561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor /// template<typename T> 187561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor /// void f(T x, T y) { 188561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor /// sizeof(sizeof(T() + T()); 189561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor /// } 190561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor /// \endcode 191561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor /// 192ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie bool isInstantiationDependent() const { 193ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie return ExprBits.InstantiationDependent; 194561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor } 195ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 196561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor /// \brief Set whether this expression is instantiation-dependent or not. 197ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie void setInstantiationDependent(bool ID) { 198561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor ExprBits.InstantiationDependent = ID; 199561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor } 2000b7489194f9f89fac39d57211c1e7953ae50251fDouglas Gregor 201d0937224f383c7cc72c947119380f9713a070c73Douglas Gregor /// \brief Whether this expression contains an unexpanded parameter 2024e24f0f711e2c9fde79f19fa1c80deaab3f3b356Richard Smith /// pack (for C++11 variadic templates). 203d0937224f383c7cc72c947119380f9713a070c73Douglas Gregor /// 204d0937224f383c7cc72c947119380f9713a070c73Douglas Gregor /// Given the following function template: 205d0937224f383c7cc72c947119380f9713a070c73Douglas Gregor /// 206d0937224f383c7cc72c947119380f9713a070c73Douglas Gregor /// \code 207d0937224f383c7cc72c947119380f9713a070c73Douglas Gregor /// template<typename F, typename ...Types> 208d0937224f383c7cc72c947119380f9713a070c73Douglas Gregor /// void forward(const F &f, Types &&...args) { 209d0937224f383c7cc72c947119380f9713a070c73Douglas Gregor /// f(static_cast<Types&&>(args)...); 210d0937224f383c7cc72c947119380f9713a070c73Douglas Gregor /// } 211d0937224f383c7cc72c947119380f9713a070c73Douglas Gregor /// \endcode 212d0937224f383c7cc72c947119380f9713a070c73Douglas Gregor /// 213d0937224f383c7cc72c947119380f9713a070c73Douglas Gregor /// The expressions \c args and \c static_cast<Types&&>(args) both 214d0937224f383c7cc72c947119380f9713a070c73Douglas Gregor /// contain parameter packs. 215ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie bool containsUnexpandedParameterPack() const { 216ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie return ExprBits.ContainsUnexpandedParameterPack; 217d0937224f383c7cc72c947119380f9713a070c73Douglas Gregor } 218d0937224f383c7cc72c947119380f9713a070c73Douglas Gregor 219bebbe0d9b7568ce43a464286bee49429489ef483Douglas Gregor /// \brief Set the bit that describes whether this expression 220bebbe0d9b7568ce43a464286bee49429489ef483Douglas Gregor /// contains an unexpanded parameter pack. 221bebbe0d9b7568ce43a464286bee49429489ef483Douglas Gregor void setContainsUnexpandedParameterPack(bool PP = true) { 222bebbe0d9b7568ce43a464286bee49429489ef483Douglas Gregor ExprBits.ContainsUnexpandedParameterPack = PP; 223bebbe0d9b7568ce43a464286bee49429489ef483Douglas Gregor } 224bebbe0d9b7568ce43a464286bee49429489ef483Douglas Gregor 2255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// getExprLoc - Return the preferred location for the arrow when diagnosing 2265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// a problem with a generic expression. 2274f311183be3d923da9fbe8702c453688b4c426a9Daniel Dunbar SourceLocation getExprLoc() const LLVM_READONLY; 2281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 229026dc96ac6ece60da5e1b98e2a71bd0ff0939fd8Chris Lattner /// isUnusedResultAWarning - Return true if this immediate expression should 230a6115068cde719142eb394db88612c185cabd05bEli Friedman /// be warned about if the result is unused. If so, fill in expr, location, 231a6115068cde719142eb394db88612c185cabd05bEli Friedman /// and ranges with expr to warn on and source locations/ranges appropriate 232a6115068cde719142eb394db88612c185cabd05bEli Friedman /// for a warning. 233a6115068cde719142eb394db88612c185cabd05bEli Friedman bool isUnusedResultAWarning(const Expr *&WarnExpr, SourceLocation &Loc, 234a6115068cde719142eb394db88612c185cabd05bEli Friedman SourceRange &R1, SourceRange &R2, 235a6115068cde719142eb394db88612c185cabd05bEli Friedman ASTContext &Ctx) const; 2361eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2377eb0a9eb0cde8444b97f9c5b713d9be7a6f1e607John McCall /// isLValue - True if this expression is an "l-value" according to 2387eb0a9eb0cde8444b97f9c5b713d9be7a6f1e607John McCall /// the rules of the current language. C and C++ give somewhat 2397eb0a9eb0cde8444b97f9c5b713d9be7a6f1e607John McCall /// different rules for this concept, but in general, the result of 2407eb0a9eb0cde8444b97f9c5b713d9be7a6f1e607John McCall /// an l-value expression identifies a specific object whereas the 2417eb0a9eb0cde8444b97f9c5b713d9be7a6f1e607John McCall /// result of an r-value expression is a value detached from any 2427eb0a9eb0cde8444b97f9c5b713d9be7a6f1e607John McCall /// specific storage. 2435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// 2444e24f0f711e2c9fde79f19fa1c80deaab3f3b356Richard Smith /// C++11 divides the concept of "r-value" into pure r-values 2457eb0a9eb0cde8444b97f9c5b713d9be7a6f1e607John McCall /// ("pr-values") and so-called expiring values ("x-values"), which 2467eb0a9eb0cde8444b97f9c5b713d9be7a6f1e607John McCall /// identify specific objects that can be safely cannibalized for 2477eb0a9eb0cde8444b97f9c5b713d9be7a6f1e607John McCall /// their resources. This is an unfortunate abuse of terminology on 2487eb0a9eb0cde8444b97f9c5b713d9be7a6f1e607John McCall /// the part of the C++ committee. In Clang, when we say "r-value", 2497eb0a9eb0cde8444b97f9c5b713d9be7a6f1e607John McCall /// we generally mean a pr-value. 2507eb0a9eb0cde8444b97f9c5b713d9be7a6f1e607John McCall bool isLValue() const { return getValueKind() == VK_LValue; } 2517eb0a9eb0cde8444b97f9c5b713d9be7a6f1e607John McCall bool isRValue() const { return getValueKind() == VK_RValue; } 2527eb0a9eb0cde8444b97f9c5b713d9be7a6f1e607John McCall bool isXValue() const { return getValueKind() == VK_XValue; } 2537eb0a9eb0cde8444b97f9c5b713d9be7a6f1e607John McCall bool isGLValue() const { return getValueKind() != VK_RValue; } 2547eb0a9eb0cde8444b97f9c5b713d9be7a6f1e607John McCall 2557eb0a9eb0cde8444b97f9c5b713d9be7a6f1e607John McCall enum LValueClassification { 2565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer LV_Valid, 2575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer LV_NotObjectType, 2585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer LV_IncompleteVoidType, 259fec0b49c3fa621fbf63e420f3d54a5bb3a0265d2Steve Naroff LV_DuplicateVectorComponents, 26086f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor LV_InvalidExpression, 261077f490d0a514dcc448475f33f799934252b85a7Fariborz Jahanian LV_InvalidMessageExpression, 2622514a309204341798f96912ce7a90841bea59727Fariborz Jahanian LV_MemberFunction, 263e9ff443040cb571ae2c5c2626c4dc9a9a812d84aFariborz Jahanian LV_SubObjCPropertySetting, 26436d02af300a207242f0486b4255420d8be796b21Richard Smith LV_ClassTemporary, 26536d02af300a207242f0486b4255420d8be796b21Richard Smith LV_ArrayTemporary 2665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer }; 2677eb0a9eb0cde8444b97f9c5b713d9be7a6f1e607John McCall /// Reasons why an expression might not be an l-value. 2687eb0a9eb0cde8444b97f9c5b713d9be7a6f1e607John McCall LValueClassification ClassifyLValue(ASTContext &Ctx) const; 26953202857c60214d80950a975e6e52aebf30bd16aEli Friedman 2705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer enum isModifiableLvalueResult { 2715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer MLV_Valid, 2725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer MLV_NotObjectType, 2735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer MLV_IncompleteVoidType, 274fec0b49c3fa621fbf63e420f3d54a5bb3a0265d2Steve Naroff MLV_DuplicateVectorComponents, 2755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer MLV_InvalidExpression, 276ca354faa7e9b99af17070c82b9662a5fca76422cChris Lattner MLV_LValueCast, // Specialized form of MLV_InvalidExpression. 2775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer MLV_IncompleteType, 2785f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer MLV_ConstQualified, 2794f6a7d7ead09b439216c32f2de806a998aeb222aSteve Naroff MLV_ArrayType, 28086f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor MLV_NoSetterProperty, 2812514a309204341798f96912ce7a90841bea59727Fariborz Jahanian MLV_MemberFunction, 282e9ff443040cb571ae2c5c2626c4dc9a9a812d84aFariborz Jahanian MLV_SubObjCPropertySetting, 283077f490d0a514dcc448475f33f799934252b85a7Fariborz Jahanian MLV_InvalidMessageExpression, 28436d02af300a207242f0486b4255420d8be796b21Richard Smith MLV_ClassTemporary, 28536d02af300a207242f0486b4255420d8be796b21Richard Smith MLV_ArrayTemporary 2865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer }; 287ad0fe03b897f9486191e75c8d90c3ffa9b4fd6a5Ted Kremenek /// isModifiableLvalue - C99 6.3.2.1: an lvalue that does not have array type, 288ad0fe03b897f9486191e75c8d90c3ffa9b4fd6a5Ted Kremenek /// does not have an incomplete type, does not have a const-qualified type, 289ad0fe03b897f9486191e75c8d90c3ffa9b4fd6a5Ted Kremenek /// and if it is a structure or union, does not have any member (including, 290ad0fe03b897f9486191e75c8d90c3ffa9b4fd6a5Ted Kremenek /// recursively, any member or element of all contained aggregates or unions) 291ad0fe03b897f9486191e75c8d90c3ffa9b4fd6a5Ted Kremenek /// with a const-qualified type. 292ad0fe03b897f9486191e75c8d90c3ffa9b4fd6a5Ted Kremenek /// 293ad0fe03b897f9486191e75c8d90c3ffa9b4fd6a5Ted Kremenek /// \param Loc [in,out] - A source location which *may* be filled 294ad0fe03b897f9486191e75c8d90c3ffa9b4fd6a5Ted Kremenek /// in with the location of the expression making this a 295ad0fe03b897f9486191e75c8d90c3ffa9b4fd6a5Ted Kremenek /// non-modifiable lvalue, if specified. 29644e35f7b2b5da1eb338639e46bf0b5522e75c5f3Daniel Dunbar isModifiableLvalueResult isModifiableLvalue(ASTContext &Ctx, 29744e35f7b2b5da1eb338639e46bf0b5522e75c5f3Daniel Dunbar SourceLocation *Loc = 0) const; 2981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2994e24f0f711e2c9fde79f19fa1c80deaab3f3b356Richard Smith /// \brief The return type of classify(). Represents the C++11 expression 3002111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl /// taxonomy. 3012111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl class Classification { 3022111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl public: 3032111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl /// \brief The various classification results. Most of these mean prvalue. 3042111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl enum Kinds { 3052111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl CL_LValue, 3062111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl CL_XValue, 3072111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl CL_Function, // Functions cannot be lvalues in C. 3082111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl CL_Void, // Void cannot be an lvalue in C. 3091c860d5640e8eebb11a5d515a761242b66761b0bPeter Collingbourne CL_AddressableVoid, // Void expression whose address can be taken in C. 3102111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl CL_DuplicateVectorComponents, // A vector shuffle with dupes. 3112111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl CL_MemberFunction, // An expression referring to a member function 3122111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl CL_SubObjCPropertySetting, 31336d02af300a207242f0486b4255420d8be796b21Richard Smith CL_ClassTemporary, // A temporary of class type, or subobject thereof. 31436d02af300a207242f0486b4255420d8be796b21Richard Smith CL_ArrayTemporary, // A temporary of array type. 315077f490d0a514dcc448475f33f799934252b85a7Fariborz Jahanian CL_ObjCMessageRValue, // ObjC message is an rvalue 3162111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl CL_PRValue // A prvalue for any other reason, of any other type 3172111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl }; 3182111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl /// \brief The results of modification testing. 3192111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl enum ModifiableType { 3202111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl CM_Untested, // testModifiable was false. 3212111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl CM_Modifiable, 3222111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl CM_RValue, // Not modifiable because it's an rvalue 3232111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl CM_Function, // Not modifiable because it's a function; C++ only 3242111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl CM_LValueCast, // Same as CM_RValue, but indicates GCC cast-as-lvalue ext 3252111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl CM_NoSetterProperty,// Implicit assignment to ObjC property without setter 3262111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl CM_ConstQualified, 3272111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl CM_ArrayType, 3282111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl CM_IncompleteType 3292111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl }; 3302111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl 3312111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl private: 3322111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl friend class Expr; 3332111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl 3342111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl unsigned short Kind; 3352111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl unsigned short Modifiable; 3362111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl 3372111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl explicit Classification(Kinds k, ModifiableType m) 3382111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl : Kind(k), Modifiable(m) 3392111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl {} 3402111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl 3412111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl public: 3422111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl Classification() {} 3432111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl 3442111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl Kinds getKind() const { return static_cast<Kinds>(Kind); } 3452111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl ModifiableType getModifiable() const { 3462111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl assert(Modifiable != CM_Untested && "Did not test for modifiability."); 3472111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl return static_cast<ModifiableType>(Modifiable); 3482111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl } 3492111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl bool isLValue() const { return Kind == CL_LValue; } 3502111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl bool isXValue() const { return Kind == CL_XValue; } 3512111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl bool isGLValue() const { return Kind <= CL_XValue; } 3522111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl bool isPRValue() const { return Kind >= CL_Function; } 3532111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl bool isRValue() const { return Kind >= CL_XValue; } 3542111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl bool isModifiable() const { return getModifiable() == CM_Modifiable; } 355ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 3562c9a03f3b249e4d9d76eadf758a33142adc4d0a4Douglas Gregor /// \brief Create a simple, modifiably lvalue 3572c9a03f3b249e4d9d76eadf758a33142adc4d0a4Douglas Gregor static Classification makeSimpleLValue() { 3582c9a03f3b249e4d9d76eadf758a33142adc4d0a4Douglas Gregor return Classification(CL_LValue, CM_Modifiable); 3592c9a03f3b249e4d9d76eadf758a33142adc4d0a4Douglas Gregor } 360ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 3612111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl }; 3624e24f0f711e2c9fde79f19fa1c80deaab3f3b356Richard Smith /// \brief Classify - Classify this expression according to the C++11 3632111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl /// expression taxonomy. 3642111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl /// 3654e24f0f711e2c9fde79f19fa1c80deaab3f3b356Richard Smith /// C++11 defines ([basic.lval]) a new taxonomy of expressions to replace the 3662111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl /// old lvalue vs rvalue. This function determines the type of expression this 3672111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl /// is. There are three expression types: 3682111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl /// - lvalues are classical lvalues as in C++03. 3692111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl /// - prvalues are equivalent to rvalues in C++03. 3702111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl /// - xvalues are expressions yielding unnamed rvalue references, e.g. a 3712111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl /// function returning an rvalue reference. 3722111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl /// lvalues and xvalues are collectively referred to as glvalues, while 3732111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl /// prvalues and xvalues together form rvalues. 3742111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl Classification Classify(ASTContext &Ctx) const { 3752111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl return ClassifyImpl(Ctx, 0); 3762111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl } 3772111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl 378369e51fa400aeb5835bb9af4634ea516c11429a7Sebastian Redl /// \brief ClassifyModifiable - Classify this expression according to the 3794e24f0f711e2c9fde79f19fa1c80deaab3f3b356Richard Smith /// C++11 expression taxonomy, and see if it is valid on the left side 3802111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl /// of an assignment. 3812111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl /// 3822111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl /// This function extends classify in that it also tests whether the 3832111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl /// expression is modifiable (C99 6.3.2.1p1). 3842111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl /// \param Loc A source location that might be filled with a relevant location 3852111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl /// if the expression is not modifiable. 3862111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl Classification ClassifyModifiable(ASTContext &Ctx, SourceLocation &Loc) const{ 3872111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl return ClassifyImpl(Ctx, &Loc); 3882111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl } 3892111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl 390f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall /// getValueKindForType - Given a formal return or parameter type, 391f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall /// give its value kind. 392f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall static ExprValueKind getValueKindForType(QualType T) { 393f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall if (const ReferenceType *RT = T->getAs<ReferenceType>()) 3940943168ac126b8047f30f6bd215fbe7db14d61baJohn McCall return (isa<LValueReferenceType>(RT) 3950943168ac126b8047f30f6bd215fbe7db14d61baJohn McCall ? VK_LValue 3960943168ac126b8047f30f6bd215fbe7db14d61baJohn McCall : (RT->getPointeeType()->isFunctionType() 3970943168ac126b8047f30f6bd215fbe7db14d61baJohn McCall ? VK_LValue : VK_XValue)); 398f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall return VK_RValue; 399f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall } 400f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall 401f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall /// getValueKind - The value kind that this expression produces. 402f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall ExprValueKind getValueKind() const { 403f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall return static_cast<ExprValueKind>(ExprBits.ValueKind); 404f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall } 405f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall 406f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall /// getObjectKind - The object kind that this expression produces. 407f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall /// Object kinds are meaningful only for expressions that yield an 408f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall /// l-value or x-value. 409f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall ExprObjectKind getObjectKind() const { 410f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall return static_cast<ExprObjectKind>(ExprBits.ObjectKind); 411f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall } 412f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall 41356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall bool isOrdinaryOrBitFieldObject() const { 41456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall ExprObjectKind OK = getObjectKind(); 41556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall return (OK == OK_Ordinary || OK == OK_BitField); 41656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall } 41756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 418f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall /// setValueKind - Set the value kind produced by this expression. 419f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall void setValueKind(ExprValueKind Cat) { ExprBits.ValueKind = Cat; } 420f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall 421f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall /// setObjectKind - Set the object kind produced by this expression. 422f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall void setObjectKind(ExprObjectKind Cat) { ExprBits.ObjectKind = Cat; } 423f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall 4242111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redlprivate: 4252111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl Classification ClassifyImpl(ASTContext &Ctx, SourceLocation *Loc) const; 4262111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl 4272111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redlpublic: 4282111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl 429993f43f24d7a45a5cd4678a3316b0852261fc5d4John McCall /// \brief Returns true if this expression is a gl-value that 430993f43f24d7a45a5cd4678a3316b0852261fc5d4John McCall /// potentially refers to a bit-field. 431993f43f24d7a45a5cd4678a3316b0852261fc5d4John McCall /// 432993f43f24d7a45a5cd4678a3316b0852261fc5d4John McCall /// In C++, whether a gl-value refers to a bitfield is essentially 433993f43f24d7a45a5cd4678a3316b0852261fc5d4John McCall /// an aspect of the value-kind type system. 434993f43f24d7a45a5cd4678a3316b0852261fc5d4John McCall bool refersToBitField() const { return getObjectKind() == OK_BitField; } 435993f43f24d7a45a5cd4678a3316b0852261fc5d4John McCall 43633bbbc5ec8269bc2cde5b84f970fa49319a30267Douglas Gregor /// \brief If this expression refers to a bit-field, retrieve the 43733bbbc5ec8269bc2cde5b84f970fa49319a30267Douglas Gregor /// declaration of that bit-field. 438993f43f24d7a45a5cd4678a3316b0852261fc5d4John McCall /// 439993f43f24d7a45a5cd4678a3316b0852261fc5d4John McCall /// Note that this returns a non-null pointer in subtly different 440993f43f24d7a45a5cd4678a3316b0852261fc5d4John McCall /// places than refersToBitField returns true. In particular, this can 441993f43f24d7a45a5cd4678a3316b0852261fc5d4John McCall /// return a non-null pointer even for r-values loaded from 442993f43f24d7a45a5cd4678a3316b0852261fc5d4John McCall /// bit-fields, but it will return null for a conditional bit-field. 443993f43f24d7a45a5cd4678a3316b0852261fc5d4John McCall FieldDecl *getSourceBitField(); 444993f43f24d7a45a5cd4678a3316b0852261fc5d4John McCall 445993f43f24d7a45a5cd4678a3316b0852261fc5d4John McCall const FieldDecl *getSourceBitField() const { 446993f43f24d7a45a5cd4678a3316b0852261fc5d4John McCall return const_cast<Expr*>(this)->getSourceBitField(); 44738d068e8f13a119b89a3b8b0f79f35cab1ffd09aAnders Carlsson } 4481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 449f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall /// \brief If this expression is an l-value for an Objective C 450f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall /// property, find the underlying property reference expression. 451f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall const ObjCPropertyRefExpr *getObjCProperty() const; 452f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall 453bbff82f302a1dd67589f65912351978905f0c5a7Anna Zaks /// \brief Check if this expression is the ObjC 'self' implicit parameter. 454bbff82f302a1dd67589f65912351978905f0c5a7Anna Zaks bool isObjCSelfExpr() const; 455bbff82f302a1dd67589f65912351978905f0c5a7Anna Zaks 456093802675b1548f2a5f44c29938d65cce00d58bbAnders Carlsson /// \brief Returns whether this expression refers to a vector element. 457093802675b1548f2a5f44c29938d65cce00d58bbAnders Carlsson bool refersToVectorElement() const; 4584919dfd54e2296ca997e3d1c9dab85976bba8e95John McCall 4594919dfd54e2296ca997e3d1c9dab85976bba8e95John McCall /// \brief Returns whether this expression has a placeholder type. 4604919dfd54e2296ca997e3d1c9dab85976bba8e95John McCall bool hasPlaceholderType() const { 4614919dfd54e2296ca997e3d1c9dab85976bba8e95John McCall return getType()->isPlaceholderType(); 4624919dfd54e2296ca997e3d1c9dab85976bba8e95John McCall } 4634919dfd54e2296ca997e3d1c9dab85976bba8e95John McCall 4644919dfd54e2296ca997e3d1c9dab85976bba8e95John McCall /// \brief Returns whether this expression has a specific placeholder type. 4654919dfd54e2296ca997e3d1c9dab85976bba8e95John McCall bool hasPlaceholderType(BuiltinType::Kind K) const { 46685def357129b6cdfd69a66ad0e6994506418a2a9John McCall assert(BuiltinType::isPlaceholderTypeKind(K)); 4674919dfd54e2296ca997e3d1c9dab85976bba8e95John McCall if (const BuiltinType *BT = dyn_cast<BuiltinType>(getType())) 4684919dfd54e2296ca997e3d1c9dab85976bba8e95John McCall return BT->getKind() == K; 4694919dfd54e2296ca997e3d1c9dab85976bba8e95John McCall return false; 4704919dfd54e2296ca997e3d1c9dab85976bba8e95John McCall } 471ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 4722b334bb3126a67895813e49e6228dad4aec0b4d6Chris Lattner /// isKnownToHaveBooleanValue - Return true if this is an integer expression 4732b334bb3126a67895813e49e6228dad4aec0b4d6Chris Lattner /// that is known to return 0 or 1. This happens for _Bool/bool expressions 4742b334bb3126a67895813e49e6228dad4aec0b4d6Chris Lattner /// but also int expressions which are produced by things like comparisons in 4752b334bb3126a67895813e49e6228dad4aec0b4d6Chris Lattner /// C. 4762b334bb3126a67895813e49e6228dad4aec0b4d6Chris Lattner bool isKnownToHaveBooleanValue() const; 477ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 4785f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// isIntegerConstantExpr - Return true if this expression is a valid integer 4795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// constant expression, and, if so, return its value in Result. If not a 4805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// valid i-c-e, return false and fill in Loc (if specified) with the location 4815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// of the invalid expression. 482282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith /// 483282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith /// Note: This does not perform the implicit conversions required by C++11 484282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith /// [expr.const]p5. 485590b6646ef747d2f7b42e5f40487ff07642d7b6fChris Lattner bool isIntegerConstantExpr(llvm::APSInt &Result, ASTContext &Ctx, 486590b6646ef747d2f7b42e5f40487ff07642d7b6fChris Lattner SourceLocation *Loc = 0, 4875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool isEvaluated = true) const; 488f48fdb0937e67f691393f9ffdf75653e5128ea13Richard Smith bool isIntegerConstantExpr(ASTContext &Ctx, SourceLocation *Loc = 0) const; 4890e35b4ecee380c2b4c33d75da6bc2fb6f6bc7df3Richard Smith 49070488e201ccd94d4bb1ef0868cc13cca2b7d4ff6Richard Smith /// isCXX98IntegralConstantExpr - Return true if this expression is an 49170488e201ccd94d4bb1ef0868cc13cca2b7d4ff6Richard Smith /// integral constant expression in C++98. Can only be used in C++. 49270488e201ccd94d4bb1ef0868cc13cca2b7d4ff6Richard Smith bool isCXX98IntegralConstantExpr(ASTContext &Ctx) const; 49370488e201ccd94d4bb1ef0868cc13cca2b7d4ff6Richard Smith 4944c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith /// isCXX11ConstantExpr - Return true if this expression is a constant 4954c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith /// expression in C++11. Can only be used in C++. 496282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith /// 497282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith /// Note: This does not perform the implicit conversions required by C++11 498282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith /// [expr.const]p5. 4994c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith bool isCXX11ConstantExpr(ASTContext &Ctx, APValue *Result = 0, 5004c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith SourceLocation *Loc = 0) const; 5014c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith 502745f5147e065900267c85a5568785a1991d4838fRichard Smith /// isPotentialConstantExpr - Return true if this function's definition 503745f5147e065900267c85a5568785a1991d4838fRichard Smith /// might be usable in a constant expression in C++11, if it were marked 504745f5147e065900267c85a5568785a1991d4838fRichard Smith /// constexpr. Return false if the function can never produce a constant 505745f5147e065900267c85a5568785a1991d4838fRichard Smith /// expression, along with diagnostics describing why not. 506745f5147e065900267c85a5568785a1991d4838fRichard Smith static bool isPotentialConstantExpr(const FunctionDecl *FD, 507cfa88f893915ceb8ae4ce2f17c46c24a4d67502fDmitri Gribenko SmallVectorImpl< 508745f5147e065900267c85a5568785a1991d4838fRichard Smith PartialDiagnosticAt> &Diags); 509745f5147e065900267c85a5568785a1991d4838fRichard Smith 5100e35b4ecee380c2b4c33d75da6bc2fb6f6bc7df3Richard Smith /// isConstantInitializer - Returns true if this expression can be emitted to 5110e35b4ecee380c2b4c33d75da6bc2fb6f6bc7df3Richard Smith /// IR as a constant, and thus can be used as a constant initializer in C. 5124204f07fc8bffe6d320b2de95fea274ccf37a17bJohn McCall bool isConstantInitializer(ASTContext &Ctx, bool ForRef) const; 5131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5141e12c59e8f9bb76c23628c4e0d0a1dfced0b1fa0Richard Smith /// EvalStatus is a struct with detailed info about an evaluation in progress. 5151e12c59e8f9bb76c23628c4e0d0a1dfced0b1fa0Richard Smith struct EvalStatus { 51694deaf675ae60e11c2d9475c6dbfd0c7123160f5Anders Carlsson /// HasSideEffects - Whether the evaluated expression has side effects. 51794deaf675ae60e11c2d9475c6dbfd0c7123160f5Anders Carlsson /// For example, (f() && 0) can be folded, but it still has side effects. 51894deaf675ae60e11c2d9475c6dbfd0c7123160f5Anders Carlsson bool HasSideEffects; 5191eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 520dd1f29b6d686899bfd033f26e16cb1621e5549e8Richard Smith /// Diag - If this is non-null, it will be filled in with a stack of notes 521dd1f29b6d686899bfd033f26e16cb1621e5549e8Richard Smith /// indicating why evaluation failed (or why it failed to produce a constant 522dd1f29b6d686899bfd033f26e16cb1621e5549e8Richard Smith /// expression). 523dd1f29b6d686899bfd033f26e16cb1621e5549e8Richard Smith /// If the expression is unfoldable, the notes will indicate why it's not 524dd1f29b6d686899bfd033f26e16cb1621e5549e8Richard Smith /// foldable. If the expression is foldable, but not a constant expression, 525dd1f29b6d686899bfd033f26e16cb1621e5549e8Richard Smith /// the notes will describes why it isn't a constant expression. If the 526dd1f29b6d686899bfd033f26e16cb1621e5549e8Richard Smith /// expression *is* a constant expression, no notes will be produced. 527cfa88f893915ceb8ae4ce2f17c46c24a4d67502fDmitri Gribenko SmallVectorImpl<PartialDiagnosticAt> *Diag; 528dd1f29b6d686899bfd033f26e16cb1621e5549e8Richard Smith 529dd1f29b6d686899bfd033f26e16cb1621e5549e8Richard Smith EvalStatus() : HasSideEffects(false), Diag(0) {} 530e17a6436b429e4b18a5e157061fb13bbc677b3b0Abramo Bagnara 531e17a6436b429e4b18a5e157061fb13bbc677b3b0Abramo Bagnara // hasSideEffects - Return true if the evaluated expression has 532e17a6436b429e4b18a5e157061fb13bbc677b3b0Abramo Bagnara // side effects. 533e17a6436b429e4b18a5e157061fb13bbc677b3b0Abramo Bagnara bool hasSideEffects() const { 534e17a6436b429e4b18a5e157061fb13bbc677b3b0Abramo Bagnara return HasSideEffects; 535e17a6436b429e4b18a5e157061fb13bbc677b3b0Abramo Bagnara } 53694deaf675ae60e11c2d9475c6dbfd0c7123160f5Anders Carlsson }; 53794deaf675ae60e11c2d9475c6dbfd0c7123160f5Anders Carlsson 5381e12c59e8f9bb76c23628c4e0d0a1dfced0b1fa0Richard Smith /// EvalResult is a struct with detailed info about an evaluated expression. 5391e12c59e8f9bb76c23628c4e0d0a1dfced0b1fa0Richard Smith struct EvalResult : EvalStatus { 5401e12c59e8f9bb76c23628c4e0d0a1dfced0b1fa0Richard Smith /// Val - This is the value the expression can be folded to. 5411e12c59e8f9bb76c23628c4e0d0a1dfced0b1fa0Richard Smith APValue Val; 5421e12c59e8f9bb76c23628c4e0d0a1dfced0b1fa0Richard Smith 5431e12c59e8f9bb76c23628c4e0d0a1dfced0b1fa0Richard Smith // isGlobalLValue - Return true if the evaluated lvalue expression 5441e12c59e8f9bb76c23628c4e0d0a1dfced0b1fa0Richard Smith // is global. 5451e12c59e8f9bb76c23628c4e0d0a1dfced0b1fa0Richard Smith bool isGlobalLValue() const; 5461e12c59e8f9bb76c23628c4e0d0a1dfced0b1fa0Richard Smith }; 5471e12c59e8f9bb76c23628c4e0d0a1dfced0b1fa0Richard Smith 54851f4708c00110940ca3f337961915f2ca1668375Richard Smith /// EvaluateAsRValue - Return true if this is a constant which we can fold to 54951f4708c00110940ca3f337961915f2ca1668375Richard Smith /// an rvalue using any crazy technique (that has nothing to do with language 55051f4708c00110940ca3f337961915f2ca1668375Richard Smith /// standards) that we want to, even if the expression has side-effects. If 55151f4708c00110940ca3f337961915f2ca1668375Richard Smith /// this function returns true, it returns the folded constant in Result. If 55251f4708c00110940ca3f337961915f2ca1668375Richard Smith /// the expression is a glvalue, an lvalue-to-rvalue conversion will be 55351f4708c00110940ca3f337961915f2ca1668375Richard Smith /// applied. 55451f4708c00110940ca3f337961915f2ca1668375Richard Smith bool EvaluateAsRValue(EvalResult &Result, const ASTContext &Ctx) const; 5555b45d4ef1ea3f04ec863daf8aa29be6c6e021750Anders Carlsson 556cd7a445c6b46c5585580dfb652300c8483c0cb6bJohn McCall /// EvaluateAsBooleanCondition - Return true if this is a constant 557cd7a445c6b46c5585580dfb652300c8483c0cb6bJohn McCall /// which we we can fold and convert to a boolean condition using 558a6b8b2c09610b8bc4330e948ece8b940c2386406Richard Smith /// any crazy technique that we want to, even if the expression has 559a6b8b2c09610b8bc4330e948ece8b940c2386406Richard Smith /// side-effects. 5604ba2a17694148e16eaa8d3917f657ffcd3667be4Jay Foad bool EvaluateAsBooleanCondition(bool &Result, const ASTContext &Ctx) const; 561cd7a445c6b46c5585580dfb652300c8483c0cb6bJohn McCall 56280d4b55db94db2172a04617d1a80feca6bbcea5cRichard Smith enum SideEffectsKind { SE_NoSideEffects, SE_AllowSideEffects }; 56380d4b55db94db2172a04617d1a80feca6bbcea5cRichard Smith 564a6b8b2c09610b8bc4330e948ece8b940c2386406Richard Smith /// EvaluateAsInt - Return true if this is a constant which we can fold and 56580d4b55db94db2172a04617d1a80feca6bbcea5cRichard Smith /// convert to an integer, using any crazy technique that we want to. 56680d4b55db94db2172a04617d1a80feca6bbcea5cRichard Smith bool EvaluateAsInt(llvm::APSInt &Result, const ASTContext &Ctx, 56780d4b55db94db2172a04617d1a80feca6bbcea5cRichard Smith SideEffectsKind AllowSideEffects = SE_NoSideEffects) const; 568a6b8b2c09610b8bc4330e948ece8b940c2386406Richard Smith 56951f4708c00110940ca3f337961915f2ca1668375Richard Smith /// isEvaluatable - Call EvaluateAsRValue to see if this expression can be 57051f4708c00110940ca3f337961915f2ca1668375Richard Smith /// constant folded without side-effects, but discard the result. 5714ba2a17694148e16eaa8d3917f657ffcd3667be4Jay Foad bool isEvaluatable(const ASTContext &Ctx) const; 572c44eec6dd29ee9415cbd38a35deff4c8b67abb6aAnders Carlsson 5736ddf4784a22b994b954ed74c6061d4603d474639Fariborz Jahanian /// HasSideEffects - This routine returns true for all those expressions 57460b70388e43d146d968a1cc0705b30cb2d7263feRichard Smith /// which have any effect other than producing a value. Example is a function 57560b70388e43d146d968a1cc0705b30cb2d7263feRichard Smith /// call, volatile variable read, or throwing an exception. 5764ba2a17694148e16eaa8d3917f657ffcd3667be4Jay Foad bool HasSideEffects(const ASTContext &Ctx) const; 57751f4708c00110940ca3f337961915f2ca1668375Richard Smith 57825d0a0f67d9e949ffbfc57bf487012f5cbfd886eDouglas Gregor /// \brief Determine whether this expression involves a call to any function 57925d0a0f67d9e949ffbfc57bf487012f5cbfd886eDouglas Gregor /// that is not trivial. 58025d0a0f67d9e949ffbfc57bf487012f5cbfd886eDouglas Gregor bool hasNonTrivialCall(ASTContext &Ctx); 58125d0a0f67d9e949ffbfc57bf487012f5cbfd886eDouglas Gregor 58251f4708c00110940ca3f337961915f2ca1668375Richard Smith /// EvaluateKnownConstInt - Call EvaluateAsRValue and return the folded 58351f4708c00110940ca3f337961915f2ca1668375Richard Smith /// integer. This must be called on an expression that constant folds to an 58451f4708c00110940ca3f337961915f2ca1668375Richard Smith /// integer. 585a18e70b25c85d7e653e642b5e6e58d6063af3d83Fariborz Jahanian llvm::APSInt EvaluateKnownConstInt(const ASTContext &Ctx, 586cfa88f893915ceb8ae4ce2f17c46c24a4d67502fDmitri Gribenko SmallVectorImpl<PartialDiagnosticAt> *Diag=0) const; 587ad48a500596d7d678b99c7f94326cfa856c3b49fFariborz Jahanian 588ad48a500596d7d678b99c7f94326cfa856c3b49fFariborz Jahanian void EvaluateForOverflow(const ASTContext &Ctx, 589ad48a500596d7d678b99c7f94326cfa856c3b49fFariborz Jahanian SmallVectorImpl<PartialDiagnosticAt> *Diag) const; 59051fe996231b1d7199f76e4005ff4c943d5deeecdAnders Carlsson 59151f4708c00110940ca3f337961915f2ca1668375Richard Smith /// EvaluateAsLValue - Evaluate an expression to see if we can fold it to an 59251f4708c00110940ca3f337961915f2ca1668375Richard Smith /// lvalue with link time known address, with no side-effects. 5934ba2a17694148e16eaa8d3917f657ffcd3667be4Jay Foad bool EvaluateAsLValue(EvalResult &Result, const ASTContext &Ctx) const; 5941b78276a75a5a0f496a82429c1ff9604d622a76dAnders Carlsson 595099e7f647ccda915513f2b2ec53352dc756082d3Richard Smith /// EvaluateAsInitializer - Evaluate an expression as if it were the 596099e7f647ccda915513f2b2ec53352dc756082d3Richard Smith /// initializer of the given declaration. Returns true if the initializer 597099e7f647ccda915513f2b2ec53352dc756082d3Richard Smith /// can be folded to a constant, and produces any relevant notes. In C++11, 598099e7f647ccda915513f2b2ec53352dc756082d3Richard Smith /// notes will be produced if the expression is not a constant expression. 599099e7f647ccda915513f2b2ec53352dc756082d3Richard Smith bool EvaluateAsInitializer(APValue &Result, const ASTContext &Ctx, 600099e7f647ccda915513f2b2ec53352dc756082d3Richard Smith const VarDecl *VD, 601cfa88f893915ceb8ae4ce2f17c46c24a4d67502fDmitri Gribenko SmallVectorImpl<PartialDiagnosticAt> &Notes) const; 602099e7f647ccda915513f2b2ec53352dc756082d3Richard Smith 60382214a80c0163e01e4d8dec1426023c89277dbb4Chandler Carruth /// \brief Enumeration used to describe the kind of Null pointer constant 60482214a80c0163e01e4d8dec1426023c89277dbb4Chandler Carruth /// returned from \c isNullPointerConstant(). 60582214a80c0163e01e4d8dec1426023c89277dbb4Chandler Carruth enum NullPointerConstantKind { 60682214a80c0163e01e4d8dec1426023c89277dbb4Chandler Carruth /// \brief Expression is not a Null pointer constant. 60782214a80c0163e01e4d8dec1426023c89277dbb4Chandler Carruth NPCK_NotNull = 0, 60882214a80c0163e01e4d8dec1426023c89277dbb4Chandler Carruth 60950800fc551ac6b8a95cca662223e7f061bbd169aDavid Blaikie /// \brief Expression is a Null pointer constant built from a zero integer 61050800fc551ac6b8a95cca662223e7f061bbd169aDavid Blaikie /// expression that is not a simple, possibly parenthesized, zero literal. 61150800fc551ac6b8a95cca662223e7f061bbd169aDavid Blaikie /// C++ Core Issue 903 will classify these expressions as "not pointers" 61250800fc551ac6b8a95cca662223e7f061bbd169aDavid Blaikie /// once it is adopted. 61350800fc551ac6b8a95cca662223e7f061bbd169aDavid Blaikie /// http://www.open-std.org/jtc1/sc22/wg21/docs/cwg_active.html#903 61450800fc551ac6b8a95cca662223e7f061bbd169aDavid Blaikie NPCK_ZeroExpression, 61550800fc551ac6b8a95cca662223e7f061bbd169aDavid Blaikie 61650800fc551ac6b8a95cca662223e7f061bbd169aDavid Blaikie /// \brief Expression is a Null pointer constant built from a literal zero. 61750800fc551ac6b8a95cca662223e7f061bbd169aDavid Blaikie NPCK_ZeroLiteral, 61882214a80c0163e01e4d8dec1426023c89277dbb4Chandler Carruth 6194e24f0f711e2c9fde79f19fa1c80deaab3f3b356Richard Smith /// \brief Expression is a C++11 nullptr. 6204e24f0f711e2c9fde79f19fa1c80deaab3f3b356Richard Smith NPCK_CXX11_nullptr, 62182214a80c0163e01e4d8dec1426023c89277dbb4Chandler Carruth 62282214a80c0163e01e4d8dec1426023c89277dbb4Chandler Carruth /// \brief Expression is a GNU-style __null constant. 62382214a80c0163e01e4d8dec1426023c89277dbb4Chandler Carruth NPCK_GNUNull 62482214a80c0163e01e4d8dec1426023c89277dbb4Chandler Carruth }; 62582214a80c0163e01e4d8dec1426023c89277dbb4Chandler Carruth 626ce94049b69f75b44c18584fe79cd238978b6b0d5Douglas Gregor /// \brief Enumeration used to describe how \c isNullPointerConstant() 627ce94049b69f75b44c18584fe79cd238978b6b0d5Douglas Gregor /// should cope with value-dependent expressions. 628ce94049b69f75b44c18584fe79cd238978b6b0d5Douglas Gregor enum NullPointerConstantValueDependence { 629ce94049b69f75b44c18584fe79cd238978b6b0d5Douglas Gregor /// \brief Specifies that the expression should never be value-dependent. 630ce94049b69f75b44c18584fe79cd238978b6b0d5Douglas Gregor NPC_NeverValueDependent = 0, 631ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 632ce94049b69f75b44c18584fe79cd238978b6b0d5Douglas Gregor /// \brief Specifies that a value-dependent expression of integral or 633ce94049b69f75b44c18584fe79cd238978b6b0d5Douglas Gregor /// dependent type should be considered a null pointer constant. 634ce94049b69f75b44c18584fe79cd238978b6b0d5Douglas Gregor NPC_ValueDependentIsNull, 635ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 636ce94049b69f75b44c18584fe79cd238978b6b0d5Douglas Gregor /// \brief Specifies that a value-dependent expression should be considered 637ce94049b69f75b44c18584fe79cd238978b6b0d5Douglas Gregor /// to never be a null pointer constant. 638ce94049b69f75b44c18584fe79cd238978b6b0d5Douglas Gregor NPC_ValueDependentIsNotNull 639ce94049b69f75b44c18584fe79cd238978b6b0d5Douglas Gregor }; 640ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 64182214a80c0163e01e4d8dec1426023c89277dbb4Chandler Carruth /// isNullPointerConstant - C99 6.3.2.3p3 - Test if this reduces down to 64282214a80c0163e01e4d8dec1426023c89277dbb4Chandler Carruth /// a Null pointer constant. The return value can further distinguish the 64382214a80c0163e01e4d8dec1426023c89277dbb4Chandler Carruth /// kind of NULL pointer constant that was detected. 64482214a80c0163e01e4d8dec1426023c89277dbb4Chandler Carruth NullPointerConstantKind isNullPointerConstant( 64582214a80c0163e01e4d8dec1426023c89277dbb4Chandler Carruth ASTContext &Ctx, 64682214a80c0163e01e4d8dec1426023c89277dbb4Chandler Carruth NullPointerConstantValueDependence NPC) const; 647efa9b3877ef298bcb792600ac33521827e1f7fafAnders Carlsson 64844baa8abba2a1552b6b50bf750a8750ab9da9f76Fariborz Jahanian /// isOBJCGCCandidate - Return true if this expression may be used in a read/ 6491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// write barrier. 650102e390bcb5a1fb1a8fdbc8505e6dfd905374bbdFariborz Jahanian bool isOBJCGCCandidate(ASTContext &Ctx) const; 6511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 65211ab79030938209f50691acae0ddb65e72a58ca9Argyrios Kyrtzidis /// \brief Returns true if this expression is a bound member function. 65311ab79030938209f50691acae0ddb65e72a58ca9Argyrios Kyrtzidis bool isBoundMemberFunction(ASTContext &Ctx) const; 65411ab79030938209f50691acae0ddb65e72a58ca9Argyrios Kyrtzidis 655864c041e118155c2b1ce0ba36942a3da5a4a055eJohn McCall /// \brief Given an expression of bound-member type, find the type 656864c041e118155c2b1ce0ba36942a3da5a4a055eJohn McCall /// of the member. Returns null if this is an *overloaded* bound 657864c041e118155c2b1ce0ba36942a3da5a4a055eJohn McCall /// member expression. 658864c041e118155c2b1ce0ba36942a3da5a4a055eJohn McCall static QualType findBoundMemberType(const Expr *expr); 659864c041e118155c2b1ce0ba36942a3da5a4a055eJohn McCall 66091a5755ad73c5dc1dfb167e448fdd74e75a6df56John McCall /// IgnoreImpCasts - Skip past any implicit casts which might 66191a5755ad73c5dc1dfb167e448fdd74e75a6df56John McCall /// surround this expression. Only skips ImplicitCastExprs. 662f9ff5876289d5228c299b57416a62c8c3b848287Daniel Dunbar Expr *IgnoreImpCasts() LLVM_READONLY; 66391a5755ad73c5dc1dfb167e448fdd74e75a6df56John McCall 6647e5e5f4cc36fe50f46ad76dca7a266434c94f475John McCall /// IgnoreImplicit - Skip past any implicit AST nodes which might 6657e5e5f4cc36fe50f46ad76dca7a266434c94f475John McCall /// surround this expression. 666f9ff5876289d5228c299b57416a62c8c3b848287Daniel Dunbar Expr *IgnoreImplicit() LLVM_READONLY { 667f9ff5876289d5228c299b57416a62c8c3b848287Daniel Dunbar return cast<Expr>(Stmt::IgnoreImplicit()); 668f9ff5876289d5228c299b57416a62c8c3b848287Daniel Dunbar } 6697e5e5f4cc36fe50f46ad76dca7a266434c94f475John McCall 670132283beb1b032e0acd09bdfb45dceadeea0026eJordan Rose const Expr *IgnoreImplicit() const LLVM_READONLY { 671132283beb1b032e0acd09bdfb45dceadeea0026eJordan Rose return const_cast<Expr*>(this)->IgnoreImplicit(); 672132283beb1b032e0acd09bdfb45dceadeea0026eJordan Rose } 673132283beb1b032e0acd09bdfb45dceadeea0026eJordan Rose 6744e99a5fc3b203397a91136c6e695e405fb8fc606Ted Kremenek /// IgnoreParens - Ignore parentheses. If this Expr is a ParenExpr, return 6751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// its subexpression. If that subexpression is also a ParenExpr, 6764e99a5fc3b203397a91136c6e695e405fb8fc606Ted Kremenek /// then this method recursively returns its subexpression, and so forth. 6774e99a5fc3b203397a91136c6e695e405fb8fc606Ted Kremenek /// Otherwise, the method returns the current Expr. 678f9ff5876289d5228c299b57416a62c8c3b848287Daniel Dunbar Expr *IgnoreParens() LLVM_READONLY; 67956f349400c5932a196509c0480ff6f99a9a0b48fChris Lattner 68056f349400c5932a196509c0480ff6f99a9a0b48fChris Lattner /// IgnoreParenCasts - Ignore parentheses and casts. Strip off any ParenExpr 68127c8dc06f65d7abcf6a7e7f64a7960c9a150ca01Douglas Gregor /// or CastExprs, returning their operand. 682f9ff5876289d5228c299b57416a62c8c3b848287Daniel Dunbar Expr *IgnoreParenCasts() LLVM_READONLY; 6831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 684ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie /// IgnoreParenImpCasts - Ignore parentheses and implicit casts. Strip off 685ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie /// any ParenExpr or ImplicitCastExprs, returning their operand. 686f9ff5876289d5228c299b57416a62c8c3b848287Daniel Dunbar Expr *IgnoreParenImpCasts() LLVM_READONLY; 6872fc46bf1a9bc31d50f82de37c70ea257d3cded27John McCall 6882f072b442879b8bba8c5dea11d7c61bedb1924aeHans Wennborg /// IgnoreConversionOperator - Ignore conversion operator. If this Expr is a 6892f072b442879b8bba8c5dea11d7c61bedb1924aeHans Wennborg /// call to a conversion operator, return the argument. 690f9ff5876289d5228c299b57416a62c8c3b848287Daniel Dunbar Expr *IgnoreConversionOperator() LLVM_READONLY; 6912f072b442879b8bba8c5dea11d7c61bedb1924aeHans Wennborg 692f9ff5876289d5228c299b57416a62c8c3b848287Daniel Dunbar const Expr *IgnoreConversionOperator() const LLVM_READONLY { 6932f072b442879b8bba8c5dea11d7c61bedb1924aeHans Wennborg return const_cast<Expr*>(this)->IgnoreConversionOperator(); 6942f072b442879b8bba8c5dea11d7c61bedb1924aeHans Wennborg } 6952f072b442879b8bba8c5dea11d7c61bedb1924aeHans Wennborg 696f9ff5876289d5228c299b57416a62c8c3b848287Daniel Dunbar const Expr *IgnoreParenImpCasts() const LLVM_READONLY { 6974d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek return const_cast<Expr*>(this)->IgnoreParenImpCasts(); 6984d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek } 699ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 700f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall /// Ignore parentheses and lvalue casts. Strip off any ParenExpr and 701f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall /// CastExprs that represent lvalue casts, returning their operand. 702f9ff5876289d5228c299b57416a62c8c3b848287Daniel Dunbar Expr *IgnoreParenLValueCasts() LLVM_READONLY; 703ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 704f9ff5876289d5228c299b57416a62c8c3b848287Daniel Dunbar const Expr *IgnoreParenLValueCasts() const LLVM_READONLY { 705f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall return const_cast<Expr*>(this)->IgnoreParenLValueCasts(); 706f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall } 7074d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek 708ecdd84147c0765caa999ddc22dde25b42712bb4dChris Lattner /// IgnoreParenNoopCasts - Ignore parentheses and casts that do not change the 709ecdd84147c0765caa999ddc22dde25b42712bb4dChris Lattner /// value (including ptr->int casts of the same size). Strip off any 710ecdd84147c0765caa999ddc22dde25b42712bb4dChris Lattner /// ParenExpr or CastExprs, returning their operand. 711f9ff5876289d5228c299b57416a62c8c3b848287Daniel Dunbar Expr *IgnoreParenNoopCasts(ASTContext &Ctx) LLVM_READONLY; 7121eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 713632fbaa22fbed7c090eb83775731bfff786c2198Rafael Espindola /// Ignore parentheses and derived-to-base casts. 714632fbaa22fbed7c090eb83775731bfff786c2198Rafael Espindola Expr *ignoreParenBaseCasts() LLVM_READONLY; 715632fbaa22fbed7c090eb83775731bfff786c2198Rafael Espindola 716632fbaa22fbed7c090eb83775731bfff786c2198Rafael Espindola const Expr *ignoreParenBaseCasts() const LLVM_READONLY { 717632fbaa22fbed7c090eb83775731bfff786c2198Rafael Espindola return const_cast<Expr*>(this)->ignoreParenBaseCasts(); 718632fbaa22fbed7c090eb83775731bfff786c2198Rafael Espindola } 719632fbaa22fbed7c090eb83775731bfff786c2198Rafael Espindola 7206eef519fc8a97bb7ca6066f23d35e10f06b2c1b5Douglas Gregor /// \brief Determine whether this expression is a default function argument. 7216eef519fc8a97bb7ca6066f23d35e10f06b2c1b5Douglas Gregor /// 7226eef519fc8a97bb7ca6066f23d35e10f06b2c1b5Douglas Gregor /// Default arguments are implicitly generated in the abstract syntax tree 723ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie /// by semantic analysis for function calls, object constructions, etc. in 7246eef519fc8a97bb7ca6066f23d35e10f06b2c1b5Douglas Gregor /// C++. Default arguments are represented by \c CXXDefaultArgExpr nodes; 7256eef519fc8a97bb7ca6066f23d35e10f06b2c1b5Douglas Gregor /// this routine also looks through any implicit casts to determine whether 7266eef519fc8a97bb7ca6066f23d35e10f06b2c1b5Douglas Gregor /// the expression is a default argument. 7276eef519fc8a97bb7ca6066f23d35e10f06b2c1b5Douglas Gregor bool isDefaultArgument() const; 728ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 729558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall /// \brief Determine whether the result of this expression is a 730558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall /// temporary object of the given class type. 731558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall bool isTemporaryObject(ASTContext &Ctx, const CXXRecordDecl *TempTy) const; 7322f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor 73375e85048e73fcde2ce9d8a48dfdb1220e132eb59Douglas Gregor /// \brief Whether this expression is an implicit reference to 'this' in C++. 73475e85048e73fcde2ce9d8a48dfdb1220e132eb59Douglas Gregor bool isImplicitCXXThis() const; 73591a5755ad73c5dc1dfb167e448fdd74e75a6df56John McCall 736f9ff5876289d5228c299b57416a62c8c3b848287Daniel Dunbar const Expr *IgnoreImpCasts() const LLVM_READONLY { 73791a5755ad73c5dc1dfb167e448fdd74e75a6df56John McCall return const_cast<Expr*>(this)->IgnoreImpCasts(); 73891a5755ad73c5dc1dfb167e448fdd74e75a6df56John McCall } 739f9ff5876289d5228c299b57416a62c8c3b848287Daniel Dunbar const Expr *IgnoreParens() const LLVM_READONLY { 7404e99a5fc3b203397a91136c6e695e405fb8fc606Ted Kremenek return const_cast<Expr*>(this)->IgnoreParens(); 7414e99a5fc3b203397a91136c6e695e405fb8fc606Ted Kremenek } 742f9ff5876289d5228c299b57416a62c8c3b848287Daniel Dunbar const Expr *IgnoreParenCasts() const LLVM_READONLY { 74356f349400c5932a196509c0480ff6f99a9a0b48fChris Lattner return const_cast<Expr*>(this)->IgnoreParenCasts(); 74456f349400c5932a196509c0480ff6f99a9a0b48fChris Lattner } 745f9ff5876289d5228c299b57416a62c8c3b848287Daniel Dunbar const Expr *IgnoreParenNoopCasts(ASTContext &Ctx) const LLVM_READONLY { 746ecdd84147c0765caa999ddc22dde25b42712bb4dChris Lattner return const_cast<Expr*>(this)->IgnoreParenNoopCasts(Ctx); 747ecdd84147c0765caa999ddc22dde25b42712bb4dChris Lattner } 7481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 749cfa88f893915ceb8ae4ce2f17c46c24a4d67502fDmitri Gribenko static bool hasAnyTypeDependentArguments(ArrayRef<Expr *> Exprs); 750898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor 7518d852e35adb46e0799538dfc9c80d44f27cd3597Rafael Espindola /// \brief For an expression of class type or pointer to class type, 7528d852e35adb46e0799538dfc9c80d44f27cd3597Rafael Espindola /// return the most derived class decl the expression is known to refer to. 7530b4fe503ef00d9f8ea330850d3e3b303e9c7c876Rafael Espindola /// 7540b4fe503ef00d9f8ea330850d3e3b303e9c7c876Rafael Espindola /// If this expression is a cast, this method looks through it to find the 7558d852e35adb46e0799538dfc9c80d44f27cd3597Rafael Espindola /// most derived decl that can be inferred from the expression. 7568d852e35adb46e0799538dfc9c80d44f27cd3597Rafael Espindola /// This is valid because derived-to-base conversions have undefined 7578d852e35adb46e0799538dfc9c80d44f27cd3597Rafael Espindola /// behavior if the object isn't dynamically of the derived type. 7588d852e35adb46e0799538dfc9c80d44f27cd3597Rafael Espindola const CXXRecordDecl *getBestDynamicClassType() const; 7590b4fe503ef00d9f8ea330850d3e3b303e9c7c876Rafael Espindola 7600a7dd835184343ec9149277b668ecdc5d49fe8b0Rafael Espindola /// Walk outwards from an expression we want to bind a reference to and 7610a7dd835184343ec9149277b668ecdc5d49fe8b0Rafael Espindola /// find the expression whose lifetime needs to be extended. Record 7624e43dec4df9d7dd8e07b47bb15967f1b733a9bc6Richard Smith /// the LHSs of comma expressions and adjustments needed along the path. 7634e43dec4df9d7dd8e07b47bb15967f1b733a9bc6Richard Smith const Expr *skipRValueSubobjectAdjustments( 7644e43dec4df9d7dd8e07b47bb15967f1b733a9bc6Richard Smith SmallVectorImpl<const Expr *> &CommaLHS, 7654e43dec4df9d7dd8e07b47bb15967f1b733a9bc6Richard Smith SmallVectorImpl<SubobjectAdjustment> &Adjustments) const; 7660a7dd835184343ec9149277b668ecdc5d49fe8b0Rafael Espindola 7670a7dd835184343ec9149277b668ecdc5d49fe8b0Rafael Espindola /// Skip irrelevant expressions to find what should be materialize for 7680a7dd835184343ec9149277b668ecdc5d49fe8b0Rafael Espindola /// binding with a reference. 7690a7dd835184343ec9149277b668ecdc5d49fe8b0Rafael Espindola const Expr * 7700a7dd835184343ec9149277b668ecdc5d49fe8b0Rafael Espindola findMaterializedTemporary(const MaterializeTemporaryExpr *&MTE) const; 7710a7dd835184343ec9149277b668ecdc5d49fe8b0Rafael Espindola 7721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump static bool classof(const Stmt *T) { 7735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return T->getStmtClass() >= firstExprConstant && 7741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump T->getStmtClass() <= lastExprConstant; 7755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 7765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer}; 7775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 7781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7795549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek//===----------------------------------------------------------------------===// 7805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// Primary Expressions. 7815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 7825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 78356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall/// OpaqueValueExpr - An expression referring to an opaque object of a 78456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall/// fixed type and value class. These don't correspond to concrete 78556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall/// syntax; instead they're used to express operations (usually copy 78656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall/// operations) on values whose source is generally obvious from 78756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall/// context. 78856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCallclass OpaqueValueExpr : public Expr { 78956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall friend class ASTStmtReader; 79056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall Expr *SourceExpr; 79156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall SourceLocation Loc; 792ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 79356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCallpublic: 794ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie OpaqueValueExpr(SourceLocation Loc, QualType T, ExprValueKind VK, 79597df54e0c075bc8d6a869597e771dad0c11a2180Douglas Gregor ExprObjectKind OK = OK_Ordinary, 79697df54e0c075bc8d6a869597e771dad0c11a2180Douglas Gregor Expr *SourceExpr = 0) 79756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall : Expr(OpaqueValueExprClass, T, VK, OK, 79897df54e0c075bc8d6a869597e771dad0c11a2180Douglas Gregor T->isDependentType(), 79997df54e0c075bc8d6a869597e771dad0c11a2180Douglas Gregor T->isDependentType() || 80097df54e0c075bc8d6a869597e771dad0c11a2180Douglas Gregor (SourceExpr && SourceExpr->isValueDependent()), 801561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor T->isInstantiationDependentType(), 802ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie false), 80397df54e0c075bc8d6a869597e771dad0c11a2180Douglas Gregor SourceExpr(SourceExpr), Loc(Loc) { 80456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall } 80556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 80656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// Given an expression which invokes a copy constructor --- i.e. a 80756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// CXXConstructExpr, possibly wrapped in an ExprWithCleanups --- 80856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// find the OpaqueValueExpr that's the source of the construction. 80956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall static const OpaqueValueExpr *findInCopyConstruct(const Expr *expr); 81056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 81156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall explicit OpaqueValueExpr(EmptyShell Empty) 81256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall : Expr(OpaqueValueExprClass, Empty) { } 81356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 81456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// \brief Retrieve the location of this expression. 81556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall SourceLocation getLocation() const { return Loc; } 816ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 81765d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocStart() const LLVM_READONLY { 81865d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen return SourceExpr ? SourceExpr->getLocStart() : Loc; 81965d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen } 82065d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocEnd() const LLVM_READONLY { 82165d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen return SourceExpr ? SourceExpr->getLocEnd() : Loc; 82256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall } 8234f311183be3d923da9fbe8702c453688b4c426a9Daniel Dunbar SourceLocation getExprLoc() const LLVM_READONLY { 82456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall if (SourceExpr) return SourceExpr->getExprLoc(); 82556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall return Loc; 82656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall } 82756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 82856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall child_range children() { return child_range(); } 82956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 83056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// The source expression of an opaque value expression is the 83156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// expression which originally generated the value. This is 83256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// provided as a convenience for analyses that don't wish to 83356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// precisely model the execution behavior of the program. 83456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// 83556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// The source expression is typically set when building the 83656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// expression which binds the opaque value expression in the first 83756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// place. 83856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall Expr *getSourceExpr() const { return SourceExpr; } 83956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 84056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall static bool classof(const Stmt *T) { 84156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall return T->getStmtClass() == OpaqueValueExprClass; 84256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall } 84356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall}; 84456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 845cb66cff8fdf641f57f85dedb515a5f3240e3a9bbChandler Carruth/// \brief A reference to a declared variable, function, enum, etc. 846cb66cff8fdf641f57f85dedb515a5f3240e3a9bbChandler Carruth/// [C99 6.5.1p2] 847cb66cff8fdf641f57f85dedb515a5f3240e3a9bbChandler Carruth/// 848cb66cff8fdf641f57f85dedb515a5f3240e3a9bbChandler Carruth/// This encodes all the information about how a declaration is referenced 849cb66cff8fdf641f57f85dedb515a5f3240e3a9bbChandler Carruth/// within an expression. 850cb66cff8fdf641f57f85dedb515a5f3240e3a9bbChandler Carruth/// 851cb66cff8fdf641f57f85dedb515a5f3240e3a9bbChandler Carruth/// There are several optional constructs attached to DeclRefExprs only when 852cb66cff8fdf641f57f85dedb515a5f3240e3a9bbChandler Carruth/// they apply in order to conserve memory. These are laid out past the end of 853cb66cff8fdf641f57f85dedb515a5f3240e3a9bbChandler Carruth/// the object, and flags in the DeclRefExprBitfield track whether they exist: 854cb66cff8fdf641f57f85dedb515a5f3240e3a9bbChandler Carruth/// 855cb66cff8fdf641f57f85dedb515a5f3240e3a9bbChandler Carruth/// DeclRefExprBits.HasQualifier: 856cb66cff8fdf641f57f85dedb515a5f3240e3a9bbChandler Carruth/// Specifies when this declaration reference expression has a C++ 857cb66cff8fdf641f57f85dedb515a5f3240e3a9bbChandler Carruth/// nested-name-specifier. 8583aa8140bde5b9bedf13e46ec0a668daa54814196Chandler Carruth/// DeclRefExprBits.HasFoundDecl: 8593aa8140bde5b9bedf13e46ec0a668daa54814196Chandler Carruth/// Specifies when this declaration reference expression has a record of 8603aa8140bde5b9bedf13e46ec0a668daa54814196Chandler Carruth/// a NamedDecl (different from the referenced ValueDecl) which was found 8613aa8140bde5b9bedf13e46ec0a668daa54814196Chandler Carruth/// during name lookup and/or overload resolution. 862e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara/// DeclRefExprBits.HasTemplateKWAndArgsInfo: 863cb66cff8fdf641f57f85dedb515a5f3240e3a9bbChandler Carruth/// Specifies when this declaration reference expression has an explicit 864e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara/// C++ template keyword and/or template argument list. 865f4b88a45902af1802a1cb42ba48b1c474474f228John McCall/// DeclRefExprBits.RefersToEnclosingLocal 866f4b88a45902af1802a1cb42ba48b1c474474f228John McCall/// Specifies when this declaration reference expression (validly) 867f4b88a45902af1802a1cb42ba48b1c474474f228John McCall/// refers to a local variable from a different function. 8685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass DeclRefExpr : public Expr { 869cb66cff8fdf641f57f85dedb515a5f3240e3a9bbChandler Carruth /// \brief The declaration that we are referencing. 870cb66cff8fdf641f57f85dedb515a5f3240e3a9bbChandler Carruth ValueDecl *D; 8712577743c5650c646fb705df01403707e94f2df04Abramo Bagnara 872cb66cff8fdf641f57f85dedb515a5f3240e3a9bbChandler Carruth /// \brief The location of the declaration name itself. 8735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceLocation Loc; 8749e922b1663ecb95dc7eee03002fd66ed18fb3192Argyrios Kyrtzidis 875cb66cff8fdf641f57f85dedb515a5f3240e3a9bbChandler Carruth /// \brief Provides source/type location info for the declaration name 876cb66cff8fdf641f57f85dedb515a5f3240e3a9bbChandler Carruth /// embedded in D. 8772577743c5650c646fb705df01403707e94f2df04Abramo Bagnara DeclarationNameLoc DNLoc; 8782577743c5650c646fb705df01403707e94f2df04Abramo Bagnara 8796857c3e12c86fd0271eb46baab5b18756a94f4cbChandler Carruth /// \brief Helper to retrieve the optional NestedNameSpecifierLoc. 8806857c3e12c86fd0271eb46baab5b18756a94f4cbChandler Carruth NestedNameSpecifierLoc &getInternalQualifierLoc() { 8817e740bd36772aae16b5cc5e605998ccc5eaf26dbChandler Carruth assert(hasQualifier()); 8826857c3e12c86fd0271eb46baab5b18756a94f4cbChandler Carruth return *reinterpret_cast<NestedNameSpecifierLoc *>(this + 1); 883a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor } 884cb66cff8fdf641f57f85dedb515a5f3240e3a9bbChandler Carruth 8856857c3e12c86fd0271eb46baab5b18756a94f4cbChandler Carruth /// \brief Helper to retrieve the optional NestedNameSpecifierLoc. 8866857c3e12c86fd0271eb46baab5b18756a94f4cbChandler Carruth const NestedNameSpecifierLoc &getInternalQualifierLoc() const { 8876857c3e12c86fd0271eb46baab5b18756a94f4cbChandler Carruth return const_cast<DeclRefExpr *>(this)->getInternalQualifierLoc(); 888a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor } 889096832c5ed5b9106fa177ebc148489760c3bc496John McCall 8903aa8140bde5b9bedf13e46ec0a668daa54814196Chandler Carruth /// \brief Test whether there is a distinct FoundDecl attached to the end of 8913aa8140bde5b9bedf13e46ec0a668daa54814196Chandler Carruth /// this DRE. 8923aa8140bde5b9bedf13e46ec0a668daa54814196Chandler Carruth bool hasFoundDecl() const { return DeclRefExprBits.HasFoundDecl; } 8933aa8140bde5b9bedf13e46ec0a668daa54814196Chandler Carruth 8943aa8140bde5b9bedf13e46ec0a668daa54814196Chandler Carruth /// \brief Helper to retrieve the optional NamedDecl through which this 8953aa8140bde5b9bedf13e46ec0a668daa54814196Chandler Carruth /// reference occured. 8963aa8140bde5b9bedf13e46ec0a668daa54814196Chandler Carruth NamedDecl *&getInternalFoundDecl() { 8973aa8140bde5b9bedf13e46ec0a668daa54814196Chandler Carruth assert(hasFoundDecl()); 8983aa8140bde5b9bedf13e46ec0a668daa54814196Chandler Carruth if (hasQualifier()) 8993aa8140bde5b9bedf13e46ec0a668daa54814196Chandler Carruth return *reinterpret_cast<NamedDecl **>(&getInternalQualifierLoc() + 1); 9003aa8140bde5b9bedf13e46ec0a668daa54814196Chandler Carruth return *reinterpret_cast<NamedDecl **>(this + 1); 9013aa8140bde5b9bedf13e46ec0a668daa54814196Chandler Carruth } 9023aa8140bde5b9bedf13e46ec0a668daa54814196Chandler Carruth 9033aa8140bde5b9bedf13e46ec0a668daa54814196Chandler Carruth /// \brief Helper to retrieve the optional NamedDecl through which this 9043aa8140bde5b9bedf13e46ec0a668daa54814196Chandler Carruth /// reference occured. 9053aa8140bde5b9bedf13e46ec0a668daa54814196Chandler Carruth NamedDecl *getInternalFoundDecl() const { 9063aa8140bde5b9bedf13e46ec0a668daa54814196Chandler Carruth return const_cast<DeclRefExpr *>(this)->getInternalFoundDecl(); 9073aa8140bde5b9bedf13e46ec0a668daa54814196Chandler Carruth } 9083aa8140bde5b9bedf13e46ec0a668daa54814196Chandler Carruth 9093d13c5a1e72ed8f8be9c083791d30643d1b1ec43Daniel Dunbar DeclRefExpr(ASTContext &Ctx, 9103d13c5a1e72ed8f8be9c083791d30643d1b1ec43Daniel Dunbar NestedNameSpecifierLoc QualifierLoc, 911e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara SourceLocation TemplateKWLoc, 912f4b88a45902af1802a1cb42ba48b1c474474f228John McCall ValueDecl *D, bool refersToEnclosingLocal, 913f4b88a45902af1802a1cb42ba48b1c474474f228John McCall const DeclarationNameInfo &NameInfo, 9143aa8140bde5b9bedf13e46ec0a668daa54814196Chandler Carruth NamedDecl *FoundD, 9152577743c5650c646fb705df01403707e94f2df04Abramo Bagnara const TemplateArgumentListInfo *TemplateArgs, 916f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall QualType T, ExprValueKind VK); 9172577743c5650c646fb705df01403707e94f2df04Abramo Bagnara 918663e380d7b2de2bbf20e886e05371195bea9adc4Argyrios Kyrtzidis /// \brief Construct an empty declaration reference expression. 919663e380d7b2de2bbf20e886e05371195bea9adc4Argyrios Kyrtzidis explicit DeclRefExpr(EmptyShell Empty) 920663e380d7b2de2bbf20e886e05371195bea9adc4Argyrios Kyrtzidis : Expr(DeclRefExprClass, Empty) { } 9217e740bd36772aae16b5cc5e605998ccc5eaf26dbChandler Carruth 9220da76df9218d7c27b471b0a4d83a5b29fe24e5b4Douglas Gregor /// \brief Computes the type- and value-dependence flags for this 9230da76df9218d7c27b471b0a4d83a5b29fe24e5b4Douglas Gregor /// declaration reference expression. 9243d13c5a1e72ed8f8be9c083791d30643d1b1ec43Daniel Dunbar void computeDependence(ASTContext &C); 9259e922b1663ecb95dc7eee03002fd66ed18fb3192Argyrios Kyrtzidis 9265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerpublic: 927f4b88a45902af1802a1cb42ba48b1c474474f228John McCall DeclRefExpr(ValueDecl *D, bool refersToEnclosingLocal, QualType T, 928f4b88a45902af1802a1cb42ba48b1c474474f228John McCall ExprValueKind VK, SourceLocation L, 9295b8968cc599eb6100bb73ae87be9d6cd2577ac9eDouglas Gregor const DeclarationNameLoc &LocInfo = DeclarationNameLoc()) 930561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor : Expr(DeclRefExprClass, T, VK, OK_Ordinary, false, false, false, false), 9315b8968cc599eb6100bb73ae87be9d6cd2577ac9eDouglas Gregor D(D), Loc(L), DNLoc(LocInfo) { 932cb66cff8fdf641f57f85dedb515a5f3240e3a9bbChandler Carruth DeclRefExprBits.HasQualifier = 0; 933e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara DeclRefExprBits.HasTemplateKWAndArgsInfo = 0; 9343aa8140bde5b9bedf13e46ec0a668daa54814196Chandler Carruth DeclRefExprBits.HasFoundDecl = 0; 9357cc58b4c927fca539d43eaa58e00dca95946eb7cAbramo Bagnara DeclRefExprBits.HadMultipleCandidates = 0; 936f4b88a45902af1802a1cb42ba48b1c474474f228John McCall DeclRefExprBits.RefersToEnclosingLocal = refersToEnclosingLocal; 9373d13c5a1e72ed8f8be9c083791d30643d1b1ec43Daniel Dunbar computeDependence(D->getASTContext()); 9380da76df9218d7c27b471b0a4d83a5b29fe24e5b4Douglas Gregor } 9391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 940a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor static DeclRefExpr *Create(ASTContext &Context, 94140d96a69c0e1e8c10f92d450c305a7aae696ca9cDouglas Gregor NestedNameSpecifierLoc QualifierLoc, 942e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara SourceLocation TemplateKWLoc, 943dbd872f273a8dbf22e089b3def6c09f0a460965dJohn McCall ValueDecl *D, 944f4b88a45902af1802a1cb42ba48b1c474474f228John McCall bool isEnclosingLocal, 945a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor SourceLocation NameLoc, 946f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall QualType T, ExprValueKind VK, 9473aa8140bde5b9bedf13e46ec0a668daa54814196Chandler Carruth NamedDecl *FoundD = 0, 9480da76df9218d7c27b471b0a4d83a5b29fe24e5b4Douglas Gregor const TemplateArgumentListInfo *TemplateArgs = 0); 949663e380d7b2de2bbf20e886e05371195bea9adc4Argyrios Kyrtzidis 9502577743c5650c646fb705df01403707e94f2df04Abramo Bagnara static DeclRefExpr *Create(ASTContext &Context, 95140d96a69c0e1e8c10f92d450c305a7aae696ca9cDouglas Gregor NestedNameSpecifierLoc QualifierLoc, 952e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara SourceLocation TemplateKWLoc, 9532577743c5650c646fb705df01403707e94f2df04Abramo Bagnara ValueDecl *D, 954f4b88a45902af1802a1cb42ba48b1c474474f228John McCall bool isEnclosingLocal, 9552577743c5650c646fb705df01403707e94f2df04Abramo Bagnara const DeclarationNameInfo &NameInfo, 956f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall QualType T, ExprValueKind VK, 9573aa8140bde5b9bedf13e46ec0a668daa54814196Chandler Carruth NamedDecl *FoundD = 0, 9582577743c5650c646fb705df01403707e94f2df04Abramo Bagnara const TemplateArgumentListInfo *TemplateArgs = 0); 9592577743c5650c646fb705df01403707e94f2df04Abramo Bagnara 960663e380d7b2de2bbf20e886e05371195bea9adc4Argyrios Kyrtzidis /// \brief Construct an empty declaration reference expression. 961663e380d7b2de2bbf20e886e05371195bea9adc4Argyrios Kyrtzidis static DeclRefExpr *CreateEmpty(ASTContext &Context, 9623aa8140bde5b9bedf13e46ec0a668daa54814196Chandler Carruth bool HasQualifier, 9633aa8140bde5b9bedf13e46ec0a668daa54814196Chandler Carruth bool HasFoundDecl, 964e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara bool HasTemplateKWAndArgsInfo, 965def0354384d9c4431f7b58b664b59896d4623028Douglas Gregor unsigned NumTemplateArgs); 9667e740bd36772aae16b5cc5e605998ccc5eaf26dbChandler Carruth 967cb66cff8fdf641f57f85dedb515a5f3240e3a9bbChandler Carruth ValueDecl *getDecl() { return D; } 968cb66cff8fdf641f57f85dedb515a5f3240e3a9bbChandler Carruth const ValueDecl *getDecl() const { return D; } 969cb66cff8fdf641f57f85dedb515a5f3240e3a9bbChandler Carruth void setDecl(ValueDecl *NewD) { D = NewD; } 970904eed3f6148758d39a2d3c88f3133274460d645Douglas Gregor 9712577743c5650c646fb705df01403707e94f2df04Abramo Bagnara DeclarationNameInfo getNameInfo() const { 9722577743c5650c646fb705df01403707e94f2df04Abramo Bagnara return DeclarationNameInfo(getDecl()->getDeclName(), Loc, DNLoc); 9732577743c5650c646fb705df01403707e94f2df04Abramo Bagnara } 9742577743c5650c646fb705df01403707e94f2df04Abramo Bagnara 9759e922b1663ecb95dc7eee03002fd66ed18fb3192Argyrios Kyrtzidis SourceLocation getLocation() const { return Loc; } 9760b7489194f9f89fac39d57211c1e7953ae50251fDouglas Gregor void setLocation(SourceLocation L) { Loc = L; } 977aa49a7d70e58dac2aeb40664ba16d2ea571b8c95Daniel Dunbar SourceLocation getLocStart() const LLVM_READONLY; 978aa49a7d70e58dac2aeb40664ba16d2ea571b8c95Daniel Dunbar SourceLocation getLocEnd() const LLVM_READONLY; 9791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 980a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor /// \brief Determine whether this declaration reference was preceded by a 981a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor /// C++ nested-name-specifier, e.g., \c N::foo. 982cb66cff8fdf641f57f85dedb515a5f3240e3a9bbChandler Carruth bool hasQualifier() const { return DeclRefExprBits.HasQualifier; } 9837e740bd36772aae16b5cc5e605998ccc5eaf26dbChandler Carruth 9847e740bd36772aae16b5cc5e605998ccc5eaf26dbChandler Carruth /// \brief If the name was qualified, retrieves the nested-name-specifier 985a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor /// that precedes the name. Otherwise, returns NULL. 986a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor NestedNameSpecifier *getQualifier() const { 987a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor if (!hasQualifier()) 988a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor return 0; 9897e740bd36772aae16b5cc5e605998ccc5eaf26dbChandler Carruth 9906857c3e12c86fd0271eb46baab5b18756a94f4cbChandler Carruth return getInternalQualifierLoc().getNestedNameSpecifier(); 991a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor } 99240d96a69c0e1e8c10f92d450c305a7aae696ca9cDouglas Gregor 9937e740bd36772aae16b5cc5e605998ccc5eaf26dbChandler Carruth /// \brief If the name was qualified, retrieves the nested-name-specifier 99440d96a69c0e1e8c10f92d450c305a7aae696ca9cDouglas Gregor /// that precedes the name, with source-location information. 99540d96a69c0e1e8c10f92d450c305a7aae696ca9cDouglas Gregor NestedNameSpecifierLoc getQualifierLoc() const { 99640d96a69c0e1e8c10f92d450c305a7aae696ca9cDouglas Gregor if (!hasQualifier()) 99740d96a69c0e1e8c10f92d450c305a7aae696ca9cDouglas Gregor return NestedNameSpecifierLoc(); 9987e740bd36772aae16b5cc5e605998ccc5eaf26dbChandler Carruth 9996857c3e12c86fd0271eb46baab5b18756a94f4cbChandler Carruth return getInternalQualifierLoc(); 100040d96a69c0e1e8c10f92d450c305a7aae696ca9cDouglas Gregor } 100140d96a69c0e1e8c10f92d450c305a7aae696ca9cDouglas Gregor 10023aa8140bde5b9bedf13e46ec0a668daa54814196Chandler Carruth /// \brief Get the NamedDecl through which this reference occured. 10033aa8140bde5b9bedf13e46ec0a668daa54814196Chandler Carruth /// 10043aa8140bde5b9bedf13e46ec0a668daa54814196Chandler Carruth /// This Decl may be different from the ValueDecl actually referred to in the 10053aa8140bde5b9bedf13e46ec0a668daa54814196Chandler Carruth /// presence of using declarations, etc. It always returns non-NULL, and may 10063aa8140bde5b9bedf13e46ec0a668daa54814196Chandler Carruth /// simple return the ValueDecl when appropriate. 10073aa8140bde5b9bedf13e46ec0a668daa54814196Chandler Carruth NamedDecl *getFoundDecl() { 10083aa8140bde5b9bedf13e46ec0a668daa54814196Chandler Carruth return hasFoundDecl() ? getInternalFoundDecl() : D; 10093aa8140bde5b9bedf13e46ec0a668daa54814196Chandler Carruth } 10103aa8140bde5b9bedf13e46ec0a668daa54814196Chandler Carruth 10113aa8140bde5b9bedf13e46ec0a668daa54814196Chandler Carruth /// \brief Get the NamedDecl through which this reference occurred. 10123aa8140bde5b9bedf13e46ec0a668daa54814196Chandler Carruth /// See non-const variant. 10133aa8140bde5b9bedf13e46ec0a668daa54814196Chandler Carruth const NamedDecl *getFoundDecl() const { 10143aa8140bde5b9bedf13e46ec0a668daa54814196Chandler Carruth return hasFoundDecl() ? getInternalFoundDecl() : D; 10153aa8140bde5b9bedf13e46ec0a668daa54814196Chandler Carruth } 10163aa8140bde5b9bedf13e46ec0a668daa54814196Chandler Carruth 1017e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara bool hasTemplateKWAndArgsInfo() const { 1018e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara return DeclRefExprBits.HasTemplateKWAndArgsInfo; 1019096832c5ed5b9106fa177ebc148489760c3bc496John McCall } 10207e740bd36772aae16b5cc5e605998ccc5eaf26dbChandler Carruth 1021e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara /// \brief Return the optional template keyword and arguments info. 1022e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara ASTTemplateKWAndArgsInfo *getTemplateKWAndArgsInfo() { 1023e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara if (!hasTemplateKWAndArgsInfo()) 1024e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara return 0; 1025e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara 10263aa8140bde5b9bedf13e46ec0a668daa54814196Chandler Carruth if (hasFoundDecl()) 1027e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara return reinterpret_cast<ASTTemplateKWAndArgsInfo *>( 10283aa8140bde5b9bedf13e46ec0a668daa54814196Chandler Carruth &getInternalFoundDecl() + 1); 10293aa8140bde5b9bedf13e46ec0a668daa54814196Chandler Carruth 10303aa8140bde5b9bedf13e46ec0a668daa54814196Chandler Carruth if (hasQualifier()) 1031e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara return reinterpret_cast<ASTTemplateKWAndArgsInfo *>( 10323aa8140bde5b9bedf13e46ec0a668daa54814196Chandler Carruth &getInternalQualifierLoc() + 1); 10337e740bd36772aae16b5cc5e605998ccc5eaf26dbChandler Carruth 1034e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara return reinterpret_cast<ASTTemplateKWAndArgsInfo *>(this + 1); 1035e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara } 1036e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara 1037e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara /// \brief Return the optional template keyword and arguments info. 1038e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara const ASTTemplateKWAndArgsInfo *getTemplateKWAndArgsInfo() const { 1039e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara return const_cast<DeclRefExpr*>(this)->getTemplateKWAndArgsInfo(); 1040e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara } 1041e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara 1042e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara /// \brief Retrieve the location of the template keyword preceding 1043e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara /// this name, if any. 1044e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara SourceLocation getTemplateKeywordLoc() const { 1045e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara if (!hasTemplateKWAndArgsInfo()) return SourceLocation(); 1046e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara return getTemplateKWAndArgsInfo()->getTemplateKeywordLoc(); 1047e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara } 1048e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara 1049e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara /// \brief Retrieve the location of the left angle bracket starting the 1050e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara /// explicit template argument list following the name, if any. 1051e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara SourceLocation getLAngleLoc() const { 1052e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara if (!hasTemplateKWAndArgsInfo()) return SourceLocation(); 1053e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara return getTemplateKWAndArgsInfo()->LAngleLoc; 1054e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara } 1055e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara 1056e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara /// \brief Retrieve the location of the right angle bracket ending the 1057e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara /// explicit template argument list following the name, if any. 1058e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara SourceLocation getRAngleLoc() const { 1059e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara if (!hasTemplateKWAndArgsInfo()) return SourceLocation(); 1060e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara return getTemplateKWAndArgsInfo()->RAngleLoc; 1061e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara } 1062e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara 1063e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara /// \brief Determines whether the name in this declaration reference 1064e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara /// was preceded by the template keyword. 1065e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara bool hasTemplateKeyword() const { return getTemplateKeywordLoc().isValid(); } 1066e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara 1067e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara /// \brief Determines whether this declaration reference was followed by an 1068e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara /// explicit template argument list. 1069e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara bool hasExplicitTemplateArgs() const { return getLAngleLoc().isValid(); } 1070e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara 1071e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara /// \brief Retrieve the explicit template argument list that followed the 1072e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara /// member template name. 1073e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara ASTTemplateArgumentListInfo &getExplicitTemplateArgs() { 1074e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara assert(hasExplicitTemplateArgs()); 1075e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara return *getTemplateKWAndArgsInfo(); 1076096832c5ed5b9106fa177ebc148489760c3bc496John McCall } 10777e740bd36772aae16b5cc5e605998ccc5eaf26dbChandler Carruth 1078096832c5ed5b9106fa177ebc148489760c3bc496John McCall /// \brief Retrieve the explicit template argument list that followed the 1079096832c5ed5b9106fa177ebc148489760c3bc496John McCall /// member template name. 1080b0c3e0909bb04af0bfb82ad01ab6909649d68ccaArgyrios Kyrtzidis const ASTTemplateArgumentListInfo &getExplicitTemplateArgs() const { 1081096832c5ed5b9106fa177ebc148489760c3bc496John McCall return const_cast<DeclRefExpr *>(this)->getExplicitTemplateArgs(); 1082a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor } 1083d5532b6cfff2977e0c59fa6ead7f7973984a620dJohn McCall 1084096832c5ed5b9106fa177ebc148489760c3bc496John McCall /// \brief Retrieves the optional explicit template arguments. 1085096832c5ed5b9106fa177ebc148489760c3bc496John McCall /// This points to the same data as getExplicitTemplateArgs(), but 1086096832c5ed5b9106fa177ebc148489760c3bc496John McCall /// returns null if there are no explicit template arguments. 1087e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara const ASTTemplateArgumentListInfo *getOptionalExplicitTemplateArgs() const { 1088096832c5ed5b9106fa177ebc148489760c3bc496John McCall if (!hasExplicitTemplateArgs()) return 0; 1089096832c5ed5b9106fa177ebc148489760c3bc496John McCall return &getExplicitTemplateArgs(); 1090096832c5ed5b9106fa177ebc148489760c3bc496John McCall } 10917e740bd36772aae16b5cc5e605998ccc5eaf26dbChandler Carruth 1092d5532b6cfff2977e0c59fa6ead7f7973984a620dJohn McCall /// \brief Copies the template arguments (if present) into the given 1093d5532b6cfff2977e0c59fa6ead7f7973984a620dJohn McCall /// structure. 1094d5532b6cfff2977e0c59fa6ead7f7973984a620dJohn McCall void copyTemplateArgumentsInto(TemplateArgumentListInfo &List) const { 1095096832c5ed5b9106fa177ebc148489760c3bc496John McCall if (hasExplicitTemplateArgs()) 1096096832c5ed5b9106fa177ebc148489760c3bc496John McCall getExplicitTemplateArgs().copyInto(List); 1097d5532b6cfff2977e0c59fa6ead7f7973984a620dJohn McCall } 10987e740bd36772aae16b5cc5e605998ccc5eaf26dbChandler Carruth 1099a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor /// \brief Retrieve the template arguments provided as part of this 1100a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor /// template-id. 1101833ca991c1bfc967f0995974ca86f66ba1f666b5John McCall const TemplateArgumentLoc *getTemplateArgs() const { 1102096832c5ed5b9106fa177ebc148489760c3bc496John McCall if (!hasExplicitTemplateArgs()) 1103a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor return 0; 11047e740bd36772aae16b5cc5e605998ccc5eaf26dbChandler Carruth 1105096832c5ed5b9106fa177ebc148489760c3bc496John McCall return getExplicitTemplateArgs().getTemplateArgs(); 1106a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor } 11077e740bd36772aae16b5cc5e605998ccc5eaf26dbChandler Carruth 1108a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor /// \brief Retrieve the number of template arguments provided as part of this 1109a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor /// template-id. 1110a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor unsigned getNumTemplateArgs() const { 1111096832c5ed5b9106fa177ebc148489760c3bc496John McCall if (!hasExplicitTemplateArgs()) 1112a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor return 0; 11137e740bd36772aae16b5cc5e605998ccc5eaf26dbChandler Carruth 1114096832c5ed5b9106fa177ebc148489760c3bc496John McCall return getExplicitTemplateArgs().NumTemplateArgs; 1115a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor } 11167e740bd36772aae16b5cc5e605998ccc5eaf26dbChandler Carruth 11177cc58b4c927fca539d43eaa58e00dca95946eb7cAbramo Bagnara /// \brief Returns true if this expression refers to a function that 11187cc58b4c927fca539d43eaa58e00dca95946eb7cAbramo Bagnara /// was resolved from an overloaded set having size greater than 1. 11197cc58b4c927fca539d43eaa58e00dca95946eb7cAbramo Bagnara bool hadMultipleCandidates() const { 11207cc58b4c927fca539d43eaa58e00dca95946eb7cAbramo Bagnara return DeclRefExprBits.HadMultipleCandidates; 11217cc58b4c927fca539d43eaa58e00dca95946eb7cAbramo Bagnara } 11227cc58b4c927fca539d43eaa58e00dca95946eb7cAbramo Bagnara /// \brief Sets the flag telling whether this expression refers to 11237cc58b4c927fca539d43eaa58e00dca95946eb7cAbramo Bagnara /// a function that was resolved from an overloaded set having size 11247cc58b4c927fca539d43eaa58e00dca95946eb7cAbramo Bagnara /// greater than 1. 11257cc58b4c927fca539d43eaa58e00dca95946eb7cAbramo Bagnara void setHadMultipleCandidates(bool V = true) { 11267cc58b4c927fca539d43eaa58e00dca95946eb7cAbramo Bagnara DeclRefExprBits.HadMultipleCandidates = V; 11277cc58b4c927fca539d43eaa58e00dca95946eb7cAbramo Bagnara } 11287cc58b4c927fca539d43eaa58e00dca95946eb7cAbramo Bagnara 1129f4b88a45902af1802a1cb42ba48b1c474474f228John McCall /// Does this DeclRefExpr refer to a local declaration from an 1130f4b88a45902af1802a1cb42ba48b1c474474f228John McCall /// enclosing function scope? 1131f4b88a45902af1802a1cb42ba48b1c474474f228John McCall bool refersToEnclosingLocal() const { 1132f4b88a45902af1802a1cb42ba48b1c474474f228John McCall return DeclRefExprBits.RefersToEnclosingLocal; 1133f4b88a45902af1802a1cb42ba48b1c474474f228John McCall } 1134f4b88a45902af1802a1cb42ba48b1c474474f228John McCall 11351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump static bool classof(const Stmt *T) { 113699e9b4d172f6877e6ba5ebe75bb8238721f5e01cDouglas Gregor return T->getStmtClass() == DeclRefExprClass; 11375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 11381eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 113977ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek // Iterators 114063c00d7f35fa060c0a446c9df3a4402d9c7757feJohn McCall child_range children() { return child_range(); } 11417e740bd36772aae16b5cc5e605998ccc5eaf26dbChandler Carruth 114260adf4acf40b72227740bf966fb87eebddff3f37Sebastian Redl friend class ASTStmtReader; 11433397c5570369f19b2d6c52e898f708d75ceede1fSebastian Redl friend class ASTStmtWriter; 11445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer}; 11455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1146d9f6910f4ef37c0e8eeee2a01287d9572c3176efChris Lattner/// PredefinedExpr - [C99 6.4.2.2] - A predefined identifier such as __func__. 1147d9f6910f4ef37c0e8eeee2a01287d9572c3176efChris Lattnerclass PredefinedExpr : public Expr { 1148227426661be33ff3e21f2b6b9f97971da2da044fAnders Carlssonpublic: 1149227426661be33ff3e21f2b6b9f97971da2da044fAnders Carlsson enum IdentType { 1150227426661be33ff3e21f2b6b9f97971da2da044fAnders Carlsson Func, 1151227426661be33ff3e21f2b6b9f97971da2da044fAnders Carlsson Function, 115228ad063b279378b19cb0704f977429df366a151eNico Weber LFunction, // Same as Function, but as wide string. 1153848fa64143fbe5ae62a601ad61277f741e54dfabAnders Carlsson PrettyFunction, 1154848fa64143fbe5ae62a601ad61277f741e54dfabAnders Carlsson /// PrettyFunctionNoVirtual - The same as PrettyFunction, except that the 1155848fa64143fbe5ae62a601ad61277f741e54dfabAnders Carlsson /// 'virtual' keyword is omitted for virtual member functions. 1156848fa64143fbe5ae62a601ad61277f741e54dfabAnders Carlsson PrettyFunctionNoVirtual 1157227426661be33ff3e21f2b6b9f97971da2da044fAnders Carlsson }; 11581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1159227426661be33ff3e21f2b6b9f97971da2da044fAnders Carlssonprivate: 1160227426661be33ff3e21f2b6b9f97971da2da044fAnders Carlsson SourceLocation Loc; 1161227426661be33ff3e21f2b6b9f97971da2da044fAnders Carlsson IdentType Type; 1162227426661be33ff3e21f2b6b9f97971da2da044fAnders Carlssonpublic: 11631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump PredefinedExpr(SourceLocation l, QualType type, IdentType IT) 1164f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall : Expr(PredefinedExprClass, type, VK_LValue, OK_Ordinary, 1165ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie type->isDependentType(), type->isDependentType(), 1166561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor type->isInstantiationDependentType(), 1167bebbe0d9b7568ce43a464286bee49429489ef483Douglas Gregor /*ContainsUnexpandedParameterPack=*/false), 1168f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall Loc(l), Type(IT) {} 11691eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 117017fc223395d51be582fc666bb6ea21bd1dff26dcDouglas Gregor /// \brief Construct an empty predefined expression. 11711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump explicit PredefinedExpr(EmptyShell Empty) 117217fc223395d51be582fc666bb6ea21bd1dff26dcDouglas Gregor : Expr(PredefinedExprClass, Empty) { } 117317fc223395d51be582fc666bb6ea21bd1dff26dcDouglas Gregor 1174227426661be33ff3e21f2b6b9f97971da2da044fAnders Carlsson IdentType getIdentType() const { return Type; } 117517fc223395d51be582fc666bb6ea21bd1dff26dcDouglas Gregor void setIdentType(IdentType IT) { Type = IT; } 117617fc223395d51be582fc666bb6ea21bd1dff26dcDouglas Gregor 117717fc223395d51be582fc666bb6ea21bd1dff26dcDouglas Gregor SourceLocation getLocation() const { return Loc; } 117817fc223395d51be582fc666bb6ea21bd1dff26dcDouglas Gregor void setLocation(SourceLocation L) { Loc = L; } 117917fc223395d51be582fc666bb6ea21bd1dff26dcDouglas Gregor 1180848fa64143fbe5ae62a601ad61277f741e54dfabAnders Carlsson static std::string ComputeName(IdentType IT, const Decl *CurrentDecl); 11813a082d81006e7a2e01a6e431a22e21c78490ff8fAnders Carlsson 118265d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocStart() const LLVM_READONLY { return Loc; } 118365d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocEnd() const LLVM_READONLY { return Loc; } 1184227426661be33ff3e21f2b6b9f97971da2da044fAnders Carlsson 11851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump static bool classof(const Stmt *T) { 11861eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return T->getStmtClass() == PredefinedExprClass; 1187227426661be33ff3e21f2b6b9f97971da2da044fAnders Carlsson } 11881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 118977ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek // Iterators 119063c00d7f35fa060c0a446c9df3a4402d9c7757feJohn McCall child_range children() { return child_range(); } 1191227426661be33ff3e21f2b6b9f97971da2da044fAnders Carlsson}; 1192227426661be33ff3e21f2b6b9f97971da2da044fAnders Carlsson 11939996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis/// \brief Used by IntegerLiteral/FloatingLiteral to store the numeric without 11949996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis/// leaking memory. 11959996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis/// 11969996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis/// For large floats/integers, APFloat/APInt will allocate memory from the heap 11979996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis/// to represent these numbers. Unfortunately, when we use a BumpPtrAllocator 11989996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis/// to allocate IntegerLiteral/FloatingLiteral nodes the memory associated with 11999996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis/// the APFloat/APInt values will never get freed. APNumericStorage uses 12009996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis/// ASTContext's allocator for memory allocation. 12019996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidisclass APNumericStorage { 12029996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis union { 12039996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis uint64_t VAL; ///< Used to store the <= 64 bits integer value. 12049996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis uint64_t *pVal; ///< Used to store the >64 bits integer value. 12059996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis }; 120691219326471798c7d3b02dc48691581580338969Benjamin Kramer unsigned BitWidth; 12079996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis 12089996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis bool hasAllocation() const { return llvm::APInt::getNumWords(BitWidth) > 1; } 12099996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis 1210f56faa01936b9cf909623d7f06e3c2569ca4a78eDmitri Gribenko APNumericStorage(const APNumericStorage &) LLVM_DELETED_FUNCTION; 1211f56faa01936b9cf909623d7f06e3c2569ca4a78eDmitri Gribenko void operator=(const APNumericStorage &) LLVM_DELETED_FUNCTION; 12129996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis 12139996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidisprotected: 121491219326471798c7d3b02dc48691581580338969Benjamin Kramer APNumericStorage() : VAL(0), BitWidth(0) { } 12159996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis 12169996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis llvm::APInt getIntValue() const { 12179996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis unsigned NumWords = llvm::APInt::getNumWords(BitWidth); 12189996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis if (NumWords > 1) 12199996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis return llvm::APInt(BitWidth, NumWords, pVal); 12209996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis else 12219996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis return llvm::APInt(BitWidth, VAL); 12229996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis } 12239996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis void setIntValue(ASTContext &C, const llvm::APInt &Val); 12249996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis}; 12259996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis 122691219326471798c7d3b02dc48691581580338969Benjamin Kramerclass APIntStorage : private APNumericStorage { 1227ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikiepublic: 1228ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie llvm::APInt getValue() const { return getIntValue(); } 12299996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis void setValue(ASTContext &C, const llvm::APInt &Val) { setIntValue(C, Val); } 12309996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis}; 12319996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis 1232bb8a897f350f46475f36140480e82289f6baa020Benjamin Kramerclass APFloatStorage : private APNumericStorage { 1233ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikiepublic: 12349ec55f24b8f848bb37a9971100cf2fca379d5572Tim Northover llvm::APFloat getValue(const llvm::fltSemantics &Semantics) const { 12359ec55f24b8f848bb37a9971100cf2fca379d5572Tim Northover return llvm::APFloat(Semantics, getIntValue()); 123631dfd642d5ac33c4ee0cfe1d7a1d4da455dcc7a4Akira Hatanaka } 12379996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis void setValue(ASTContext &C, const llvm::APFloat &Val) { 12389996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis setIntValue(C, Val.bitcastToAPInt()); 12399996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis } 12409996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis}; 12419996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis 124291219326471798c7d3b02dc48691581580338969Benjamin Kramerclass IntegerLiteral : public Expr, public APIntStorage { 12435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceLocation Loc; 12449996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis 12459996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis /// \brief Construct an empty integer literal. 12469996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis explicit IntegerLiteral(EmptyShell Empty) 12479996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis : Expr(IntegerLiteralClass, Empty) { } 12489996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis 12495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerpublic: 12501eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // type should be IntTy, LongTy, LongLongTy, UnsignedIntTy, UnsignedLongTy, 12515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // or UnsignedLongLongTy 1252478851c3ed6bd784e7377dffd8e57b200c1b9ba9Benjamin Kramer IntegerLiteral(ASTContext &C, const llvm::APInt &V, QualType type, 1253478851c3ed6bd784e7377dffd8e57b200c1b9ba9Benjamin Kramer SourceLocation l); 1254a135fb43eb94524a6529768596a4533eed9aa70dAnders Carlsson 12551dd986dff9ddfbec687975700770bb377988e9edRichard Trieu /// \brief Returns a new integer literal with value 'V' and type 'type'. 12561dd986dff9ddfbec687975700770bb377988e9edRichard Trieu /// \param type - either IntTy, LongTy, LongLongTy, UnsignedIntTy, 12571dd986dff9ddfbec687975700770bb377988e9edRichard Trieu /// UnsignedLongTy, or UnsignedLongLongTy which should match the size of V 12581dd986dff9ddfbec687975700770bb377988e9edRichard Trieu /// \param V - the value that the returned integer literal contains. 12599996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis static IntegerLiteral *Create(ASTContext &C, const llvm::APInt &V, 12609996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis QualType type, SourceLocation l); 12611dd986dff9ddfbec687975700770bb377988e9edRichard Trieu /// \brief Returns a new empty integer literal. 12629996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis static IntegerLiteral *Create(ASTContext &C, EmptyShell Empty); 12630b7489194f9f89fac39d57211c1e7953ae50251fDouglas Gregor 126465d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocStart() const LLVM_READONLY { return Loc; } 126565d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocEnd() const LLVM_READONLY { return Loc; } 12665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1267313a81dd820c9b2c0203bdcd974c781a81e4f0cfDouglas Gregor /// \brief Retrieve the location of the literal. 1268313a81dd820c9b2c0203bdcd974c781a81e4f0cfDouglas Gregor SourceLocation getLocation() const { return Loc; } 1269313a81dd820c9b2c0203bdcd974c781a81e4f0cfDouglas Gregor 12700b7489194f9f89fac39d57211c1e7953ae50251fDouglas Gregor void setLocation(SourceLocation Location) { Loc = Location; } 12710b7489194f9f89fac39d57211c1e7953ae50251fDouglas Gregor 12721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump static bool classof(const Stmt *T) { 12731eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return T->getStmtClass() == IntegerLiteralClass; 12745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 12751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 127677ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek // Iterators 127763c00d7f35fa060c0a446c9df3a4402d9c7757feJohn McCall child_range children() { return child_range(); } 12785f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer}; 12795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 12805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass CharacterLiteral : public Expr { 12815cee1195584fa8672253139c86e922daeda69b9eDouglas Gregorpublic: 12825cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor enum CharacterKind { 12835cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor Ascii, 12845cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor Wide, 12855cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor UTF16, 12865cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor UTF32 12875cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor }; 12885cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor 12895cee1195584fa8672253139c86e922daeda69b9eDouglas Gregorprivate: 12905f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer unsigned Value; 12915f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceLocation Loc; 12925f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerpublic: 12935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // type should be IntTy 12945cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor CharacterLiteral(unsigned value, CharacterKind kind, QualType type, 12955cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor SourceLocation l) 1296bebbe0d9b7568ce43a464286bee49429489ef483Douglas Gregor : Expr(CharacterLiteralClass, type, VK_RValue, OK_Ordinary, false, false, 1297561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor false, false), 1298bb8a897f350f46475f36140480e82289f6baa020Benjamin Kramer Value(value), Loc(l) { 1299bb8a897f350f46475f36140480e82289f6baa020Benjamin Kramer CharacterLiteralBits.Kind = kind; 13005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 13010b7489194f9f89fac39d57211c1e7953ae50251fDouglas Gregor 13020b7489194f9f89fac39d57211c1e7953ae50251fDouglas Gregor /// \brief Construct an empty character literal. 13030b7489194f9f89fac39d57211c1e7953ae50251fDouglas Gregor CharacterLiteral(EmptyShell Empty) : Expr(CharacterLiteralClass, Empty) { } 13040b7489194f9f89fac39d57211c1e7953ae50251fDouglas Gregor 1305018d8e0596dd57401eeddcf11ac84ff0a065fbbeChris Lattner SourceLocation getLocation() const { return Loc; } 1306bb8a897f350f46475f36140480e82289f6baa020Benjamin Kramer CharacterKind getKind() const { 1307bb8a897f350f46475f36140480e82289f6baa020Benjamin Kramer return static_cast<CharacterKind>(CharacterLiteralBits.Kind); 1308bb8a897f350f46475f36140480e82289f6baa020Benjamin Kramer } 13091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 131065d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocStart() const LLVM_READONLY { return Loc; } 131165d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocEnd() const LLVM_READONLY { return Loc; } 13121eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 13135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer unsigned getValue() const { return Value; } 13145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 13150b7489194f9f89fac39d57211c1e7953ae50251fDouglas Gregor void setLocation(SourceLocation Location) { Loc = Location; } 1316bb8a897f350f46475f36140480e82289f6baa020Benjamin Kramer void setKind(CharacterKind kind) { CharacterLiteralBits.Kind = kind; } 13170b7489194f9f89fac39d57211c1e7953ae50251fDouglas Gregor void setValue(unsigned Val) { Value = Val; } 13180b7489194f9f89fac39d57211c1e7953ae50251fDouglas Gregor 13191eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump static bool classof(const Stmt *T) { 13201eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return T->getStmtClass() == CharacterLiteralClass; 13215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 132277ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek 132377ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek // Iterators 132463c00d7f35fa060c0a446c9df3a4402d9c7757feJohn McCall child_range children() { return child_range(); } 13255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer}; 13265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1327bb8a897f350f46475f36140480e82289f6baa020Benjamin Kramerclass FloatingLiteral : public Expr, private APFloatStorage { 13285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceLocation Loc; 13299996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis 13309996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis FloatingLiteral(ASTContext &C, const llvm::APFloat &V, bool isexact, 1331478851c3ed6bd784e7377dffd8e57b200c1b9ba9Benjamin Kramer QualType Type, SourceLocation L); 13325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 133317fc223395d51be582fc666bb6ea21bd1dff26dcDouglas Gregor /// \brief Construct an empty floating-point literal. 1334478851c3ed6bd784e7377dffd8e57b200c1b9ba9Benjamin Kramer explicit FloatingLiteral(ASTContext &C, EmptyShell Empty); 133517fc223395d51be582fc666bb6ea21bd1dff26dcDouglas Gregor 13369996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidispublic: 13379996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis static FloatingLiteral *Create(ASTContext &C, const llvm::APFloat &V, 13389996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis bool isexact, QualType Type, SourceLocation L); 13399996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis static FloatingLiteral *Create(ASTContext &C, EmptyShell Empty); 13409996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis 1341bb8a897f350f46475f36140480e82289f6baa020Benjamin Kramer llvm::APFloat getValue() const { 13429ec55f24b8f848bb37a9971100cf2fca379d5572Tim Northover return APFloatStorage::getValue(getSemantics()); 1343bb8a897f350f46475f36140480e82289f6baa020Benjamin Kramer } 13449996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis void setValue(ASTContext &C, const llvm::APFloat &Val) { 13459ec55f24b8f848bb37a9971100cf2fca379d5572Tim Northover assert(&getSemantics() == &Val.getSemantics() && "Inconsistent semantics"); 1346bb8a897f350f46475f36140480e82289f6baa020Benjamin Kramer APFloatStorage::setValue(C, Val); 13479996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis } 134817fc223395d51be582fc666bb6ea21bd1dff26dcDouglas Gregor 13499ec55f24b8f848bb37a9971100cf2fca379d5572Tim Northover /// Get a raw enumeration value representing the floating-point semantics of 13509ec55f24b8f848bb37a9971100cf2fca379d5572Tim Northover /// this literal (32-bit IEEE, x87, ...), suitable for serialisation. 13519ec55f24b8f848bb37a9971100cf2fca379d5572Tim Northover APFloatSemantics getRawSemantics() const { 13529ec55f24b8f848bb37a9971100cf2fca379d5572Tim Northover return static_cast<APFloatSemantics>(FloatingLiteralBits.Semantics); 13539ec55f24b8f848bb37a9971100cf2fca379d5572Tim Northover } 13549ec55f24b8f848bb37a9971100cf2fca379d5572Tim Northover 13559ec55f24b8f848bb37a9971100cf2fca379d5572Tim Northover /// Set the raw enumeration value representing the floating-point semantics of 13569ec55f24b8f848bb37a9971100cf2fca379d5572Tim Northover /// this literal (32-bit IEEE, x87, ...), suitable for serialisation. 13579ec55f24b8f848bb37a9971100cf2fca379d5572Tim Northover void setRawSemantics(APFloatSemantics Sem) { 13589ec55f24b8f848bb37a9971100cf2fca379d5572Tim Northover FloatingLiteralBits.Semantics = Sem; 13599ec55f24b8f848bb37a9971100cf2fca379d5572Tim Northover } 13609ec55f24b8f848bb37a9971100cf2fca379d5572Tim Northover 13619ec55f24b8f848bb37a9971100cf2fca379d5572Tim Northover /// Return the APFloat semantics this literal uses. 13629ec55f24b8f848bb37a9971100cf2fca379d5572Tim Northover const llvm::fltSemantics &getSemantics() const; 13639ec55f24b8f848bb37a9971100cf2fca379d5572Tim Northover 13649ec55f24b8f848bb37a9971100cf2fca379d5572Tim Northover /// Set the APFloat semantics this literal uses. 13659ec55f24b8f848bb37a9971100cf2fca379d5572Tim Northover void setSemantics(const llvm::fltSemantics &Sem); 13669ec55f24b8f848bb37a9971100cf2fca379d5572Tim Northover 1367bb8a897f350f46475f36140480e82289f6baa020Benjamin Kramer bool isExact() const { return FloatingLiteralBits.IsExact; } 1368bb8a897f350f46475f36140480e82289f6baa020Benjamin Kramer void setExact(bool E) { FloatingLiteralBits.IsExact = E; } 1369c9bec4bfea9090a08dd83a7b213f0c8adf8d78ecChris Lattner 1370da8249e57f3badecf925571881fe57243935c6c1Chris Lattner /// getValueAsApproximateDouble - This returns the value as an inaccurate 1371da8249e57f3badecf925571881fe57243935c6c1Chris Lattner /// double. Note that this may cause loss of precision, but is useful for 1372da8249e57f3badecf925571881fe57243935c6c1Chris Lattner /// debugging dumps, etc. 1373da8249e57f3badecf925571881fe57243935c6c1Chris Lattner double getValueAsApproximateDouble() const; 13741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 137517fc223395d51be582fc666bb6ea21bd1dff26dcDouglas Gregor SourceLocation getLocation() const { return Loc; } 137617fc223395d51be582fc666bb6ea21bd1dff26dcDouglas Gregor void setLocation(SourceLocation L) { Loc = L; } 137717fc223395d51be582fc666bb6ea21bd1dff26dcDouglas Gregor 137865d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocStart() const LLVM_READONLY { return Loc; } 137965d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocEnd() const LLVM_READONLY { return Loc; } 13805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 13811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump static bool classof(const Stmt *T) { 13821eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return T->getStmtClass() == FloatingLiteralClass; 13835f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 13841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 138577ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek // Iterators 138663c00d7f35fa060c0a446c9df3a4402d9c7757feJohn McCall child_range children() { return child_range(); } 13875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer}; 13885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 13895d66145eed1c319df5a69977cb8ff74f597ea544Chris Lattner/// ImaginaryLiteral - We support imaginary integer and floating point literals, 13905d66145eed1c319df5a69977cb8ff74f597ea544Chris Lattner/// like "1.0i". We represent these as a wrapper around FloatingLiteral and 13915d66145eed1c319df5a69977cb8ff74f597ea544Chris Lattner/// IntegerLiteral classes. Instances of this class always have a Complex type 13925d66145eed1c319df5a69977cb8ff74f597ea544Chris Lattner/// whose element type matches the subexpression. 13935d66145eed1c319df5a69977cb8ff74f597ea544Chris Lattner/// 13945d66145eed1c319df5a69977cb8ff74f597ea544Chris Lattnerclass ImaginaryLiteral : public Expr { 13955549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek Stmt *Val; 13965d66145eed1c319df5a69977cb8ff74f597ea544Chris Lattnerpublic: 13975d66145eed1c319df5a69977cb8ff74f597ea544Chris Lattner ImaginaryLiteral(Expr *val, QualType Ty) 1398bebbe0d9b7568ce43a464286bee49429489ef483Douglas Gregor : Expr(ImaginaryLiteralClass, Ty, VK_RValue, OK_Ordinary, false, false, 1399561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor false, false), 1400f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall Val(val) {} 14011eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1402cb2ca73c1d7e76cc1358ce51457d2d5837d84f9bDouglas Gregor /// \brief Build an empty imaginary literal. 14031eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump explicit ImaginaryLiteral(EmptyShell Empty) 1404cb2ca73c1d7e76cc1358ce51457d2d5837d84f9bDouglas Gregor : Expr(ImaginaryLiteralClass, Empty) { } 1405cb2ca73c1d7e76cc1358ce51457d2d5837d84f9bDouglas Gregor 14065549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek const Expr *getSubExpr() const { return cast<Expr>(Val); } 14075549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek Expr *getSubExpr() { return cast<Expr>(Val); } 1408cb2ca73c1d7e76cc1358ce51457d2d5837d84f9bDouglas Gregor void setSubExpr(Expr *E) { Val = E; } 1409cb2ca73c1d7e76cc1358ce51457d2d5837d84f9bDouglas Gregor 141065d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocStart() const LLVM_READONLY { return Val->getLocStart(); } 141165d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocEnd() const LLVM_READONLY { return Val->getLocEnd(); } 141265d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen 14131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump static bool classof(const Stmt *T) { 14141eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return T->getStmtClass() == ImaginaryLiteralClass; 14155d66145eed1c319df5a69977cb8ff74f597ea544Chris Lattner } 14161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 14175d66145eed1c319df5a69977cb8ff74f597ea544Chris Lattner // Iterators 141863c00d7f35fa060c0a446c9df3a4402d9c7757feJohn McCall child_range children() { return child_range(&Val, &Val+1); } 14195d66145eed1c319df5a69977cb8ff74f597ea544Chris Lattner}; 14205d66145eed1c319df5a69977cb8ff74f597ea544Chris Lattner 1421e6a82b2c29ad05534841e5f8fd033fb17b6f61e2Ted Kremenek/// StringLiteral - This represents a string literal expression, e.g. "foo" 1422e6a82b2c29ad05534841e5f8fd033fb17b6f61e2Ted Kremenek/// or L"bar" (wide strings). The actual string is returned by getStrData() 1423e6a82b2c29ad05534841e5f8fd033fb17b6f61e2Ted Kremenek/// is NOT null-terminated, and the length of the string is determined by 1424a7ad98ff0919d6a24ea7c46634ea29bea551c1a0Chris Lattner/// calling getByteLength(). The C type for a string is always a 1425c4a09c189981b4561428e4b56fd250718e2717bbChris Lattner/// ConstantArrayType. In C++, the char type is const qualified, in C it is 1426c4a09c189981b4561428e4b56fd250718e2717bbChris Lattner/// not. 1427690398188ea5b428f06aa13c7d4ce6eb741ad4f9Chris Lattner/// 1428690398188ea5b428f06aa13c7d4ce6eb741ad4f9Chris Lattner/// Note that strings in C can be formed by concatenation of multiple string 14298bea7c0ee44c71c817de7dc2be932b73bec90c9fChris Lattner/// literal pptokens in translation phase #6. This keeps track of the locations 1430690398188ea5b428f06aa13c7d4ce6eb741ad4f9Chris Lattner/// of each of these pieces. 1431c4a09c189981b4561428e4b56fd250718e2717bbChris Lattner/// 1432c4a09c189981b4561428e4b56fd250718e2717bbChris Lattner/// Strings in C can also be truncated and extended by assigning into arrays, 1433c4a09c189981b4561428e4b56fd250718e2717bbChris Lattner/// e.g. with constructs like: 1434c4a09c189981b4561428e4b56fd250718e2717bbChris Lattner/// char X[2] = "foobar"; 1435c4a09c189981b4561428e4b56fd250718e2717bbChris Lattner/// In this case, getByteLength() will return 6, but the string literal will 1436c4a09c189981b4561428e4b56fd250718e2717bbChris Lattner/// have type "char[2]". 14375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass StringLiteral : public Expr { 14385cee1195584fa8672253139c86e922daeda69b9eDouglas Gregorpublic: 14395cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor enum StringKind { 14405cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor Ascii, 14415cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor Wide, 14425cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor UTF8, 14435cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor UTF16, 14445cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor UTF32 14455cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor }; 14465cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor 14475cee1195584fa8672253139c86e922daeda69b9eDouglas Gregorprivate: 14483e2193ce5feb2feb092e5ae615e85148e06e9fd2Anders Carlsson friend class ASTStmtReader; 14493e2193ce5feb2feb092e5ae615e85148e06e9fd2Anders Carlsson 145064f45a24b19eb89ff88f7c3ff0df9be8e861ac97Eli Friedman union { 145164f45a24b19eb89ff88f7c3ff0df9be8e861ac97Eli Friedman const char *asChar; 145264f45a24b19eb89ff88f7c3ff0df9be8e861ac97Eli Friedman const uint16_t *asUInt16; 145364f45a24b19eb89ff88f7c3ff0df9be8e861ac97Eli Friedman const uint32_t *asUInt32; 145464f45a24b19eb89ff88f7c3ff0df9be8e861ac97Eli Friedman } StrData; 145564f45a24b19eb89ff88f7c3ff0df9be8e861ac97Eli Friedman unsigned Length; 14560840f2378e9b5764755c5dffd27d7878c7606a0cBenjamin Kramer unsigned CharByteWidth : 4; 14575cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor unsigned Kind : 3; 14580840f2378e9b5764755c5dffd27d7878c7606a0cBenjamin Kramer unsigned IsPascal : 1; 14590840f2378e9b5764755c5dffd27d7878c7606a0cBenjamin Kramer unsigned NumConcatenated; 1460726e168dc09fb23f53c7b004f8e919421ee91806Chris Lattner SourceLocation TokLocs[1]; 14612085fd6cd22ec5c268175251db10d7c60caf7aaaChris Lattner 1462f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall StringLiteral(QualType Ty) : 1463561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor Expr(StringLiteralClass, Ty, VK_LValue, OK_Ordinary, false, false, false, 1464561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor false) {} 14651eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 146664f45a24b19eb89ff88f7c3ff0df9be8e861ac97Eli Friedman static int mapCharByteWidth(TargetInfo const &target,StringKind k); 146764f45a24b19eb89ff88f7c3ff0df9be8e861ac97Eli Friedman 14685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerpublic: 14692085fd6cd22ec5c268175251db10d7c60caf7aaaChris Lattner /// This is the "fully general" constructor that allows representation of 14702085fd6cd22ec5c268175251db10d7c60caf7aaaChris Lattner /// strings formed from multiple concatenated tokens. 14715cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor static StringLiteral *Create(ASTContext &C, StringRef Str, StringKind Kind, 147265aa6885818d4b4eea2e5a9d12085b2398148662Jay Foad bool Pascal, QualType Ty, 1473a135fb43eb94524a6529768596a4533eed9aa70dAnders Carlsson const SourceLocation *Loc, unsigned NumStrs); 14742085fd6cd22ec5c268175251db10d7c60caf7aaaChris Lattner 14752085fd6cd22ec5c268175251db10d7c60caf7aaaChris Lattner /// Simple constructor for string literals made from one token. 14765cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor static StringLiteral *Create(ASTContext &C, StringRef Str, StringKind Kind, 14775cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor bool Pascal, QualType Ty, 14785cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor SourceLocation Loc) { 14795cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor return Create(C, Str, Kind, Pascal, Ty, &Loc, 1); 14802085fd6cd22ec5c268175251db10d7c60caf7aaaChris Lattner } 1481a135fb43eb94524a6529768596a4533eed9aa70dAnders Carlsson 1482673ecd6a4a9f7c12fb6f76f84f654dbdcdc89e76Douglas Gregor /// \brief Construct an empty string literal. 1483673ecd6a4a9f7c12fb6f76f84f654dbdcdc89e76Douglas Gregor static StringLiteral *CreateEmpty(ASTContext &C, unsigned NumStrs); 1484673ecd6a4a9f7c12fb6f76f84f654dbdcdc89e76Douglas Gregor 1485686775deca8b8685eb90801495880e3abdd844c2Chris Lattner StringRef getString() const { 148664f45a24b19eb89ff88f7c3ff0df9be8e861ac97Eli Friedman assert(CharByteWidth==1 148764f45a24b19eb89ff88f7c3ff0df9be8e861ac97Eli Friedman && "This function is used in places that assume strings use char"); 148864f45a24b19eb89ff88f7c3ff0df9be8e861ac97Eli Friedman return StringRef(StrData.asChar, getByteLength()); 148964f45a24b19eb89ff88f7c3ff0df9be8e861ac97Eli Friedman } 149064f45a24b19eb89ff88f7c3ff0df9be8e861ac97Eli Friedman 14910982205bade2fb4fc984c27b2ab401e683963b10James Dennett /// Allow access to clients that need the byte representation, such as 14920982205bade2fb4fc984c27b2ab401e683963b10James Dennett /// ASTWriterStmt::VisitStringLiteral(). 149364f45a24b19eb89ff88f7c3ff0df9be8e861ac97Eli Friedman StringRef getBytes() const { 1494e91e0ae772004912285ccc3848b27208da8c045bChris Lattner // FIXME: StringRef may not be the right type to use as a result for this. 1495e91e0ae772004912285ccc3848b27208da8c045bChris Lattner if (CharByteWidth == 1) 1496e91e0ae772004912285ccc3848b27208da8c045bChris Lattner return StringRef(StrData.asChar, getByteLength()); 1497e91e0ae772004912285ccc3848b27208da8c045bChris Lattner if (CharByteWidth == 4) 149864f45a24b19eb89ff88f7c3ff0df9be8e861ac97Eli Friedman return StringRef(reinterpret_cast<const char*>(StrData.asUInt32), 149964f45a24b19eb89ff88f7c3ff0df9be8e861ac97Eli Friedman getByteLength()); 1500e91e0ae772004912285ccc3848b27208da8c045bChris Lattner assert(CharByteWidth == 2 && "unsupported CharByteWidth"); 1501e91e0ae772004912285ccc3848b27208da8c045bChris Lattner return StringRef(reinterpret_cast<const char*>(StrData.asUInt16), 1502e91e0ae772004912285ccc3848b27208da8c045bChris Lattner getByteLength()); 1503b648023da23e8b227cdda57a241db4c6f368726bDaniel Dunbar } 15042f4eaef37476ae6891ede8ba215d0f6fd093629bBenjamin Kramer 1505ae54121c15cdd38f415f6fdda48215ab5e4dcee1Alexander Kornienko void outputString(raw_ostream &OS) const; 15068ab09da1faaa33b9fa78de59cc4e191bfe9907b5Richard Trieu 150764f45a24b19eb89ff88f7c3ff0df9be8e861ac97Eli Friedman uint32_t getCodeUnit(size_t i) const { 1508e91e0ae772004912285ccc3848b27208da8c045bChris Lattner assert(i < Length && "out of bounds access"); 1509e91e0ae772004912285ccc3848b27208da8c045bChris Lattner if (CharByteWidth == 1) 151064f45a24b19eb89ff88f7c3ff0df9be8e861ac97Eli Friedman return static_cast<unsigned char>(StrData.asChar[i]); 1511e91e0ae772004912285ccc3848b27208da8c045bChris Lattner if (CharByteWidth == 4) 1512e91e0ae772004912285ccc3848b27208da8c045bChris Lattner return StrData.asUInt32[i]; 1513e91e0ae772004912285ccc3848b27208da8c045bChris Lattner assert(CharByteWidth == 2 && "unsupported CharByteWidth"); 1514e91e0ae772004912285ccc3848b27208da8c045bChris Lattner return StrData.asUInt16[i]; 151564f45a24b19eb89ff88f7c3ff0df9be8e861ac97Eli Friedman } 151664f45a24b19eb89ff88f7c3ff0df9be8e861ac97Eli Friedman 151764f45a24b19eb89ff88f7c3ff0df9be8e861ac97Eli Friedman unsigned getByteLength() const { return CharByteWidth*Length; } 151864f45a24b19eb89ff88f7c3ff0df9be8e861ac97Eli Friedman unsigned getLength() const { return Length; } 151964f45a24b19eb89ff88f7c3ff0df9be8e861ac97Eli Friedman unsigned getCharByteWidth() const { return CharByteWidth; } 1520673ecd6a4a9f7c12fb6f76f84f654dbdcdc89e76Douglas Gregor 1521673ecd6a4a9f7c12fb6f76f84f654dbdcdc89e76Douglas Gregor /// \brief Sets the string data to the given string data. 152264f45a24b19eb89ff88f7c3ff0df9be8e861ac97Eli Friedman void setString(ASTContext &C, StringRef Str, 152364f45a24b19eb89ff88f7c3ff0df9be8e861ac97Eli Friedman StringKind Kind, bool IsPascal); 1524673ecd6a4a9f7c12fb6f76f84f654dbdcdc89e76Douglas Gregor 15255cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor StringKind getKind() const { return static_cast<StringKind>(Kind); } 1526ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 1527ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 15285cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor bool isAscii() const { return Kind == Ascii; } 15295cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor bool isWide() const { return Kind == Wide; } 15305cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor bool isUTF8() const { return Kind == UTF8; } 15315cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor bool isUTF16() const { return Kind == UTF16; } 15325cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor bool isUTF32() const { return Kind == UTF32; } 15333e2193ce5feb2feb092e5ae615e85148e06e9fd2Anders Carlsson bool isPascal() const { return IsPascal; } 15345cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor 15358d4141f83d9de379547cf05bd75d4c6cf894b189Steve Naroff bool containsNonAsciiOrNull() const { 1536686775deca8b8685eb90801495880e3abdd844c2Chris Lattner StringRef Str = getString(); 1537b648023da23e8b227cdda57a241db4c6f368726bDaniel Dunbar for (unsigned i = 0, e = Str.size(); i != e; ++i) 1538223f0ff6a9a5d0eaf63b98b3aa92888b4c088868Jordan Rose if (!isASCII(Str[i]) || !Str[i]) 153933fdb738a6c125f4c788733897021b7c1a062b0cSteve Naroff return true; 154033fdb738a6c125f4c788733897021b7c1a062b0cSteve Naroff return false; 154133fdb738a6c125f4c788733897021b7c1a062b0cSteve Naroff } 1542ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 1543726e168dc09fb23f53c7b004f8e919421ee91806Chris Lattner /// getNumConcatenated - Get the number of string literal tokens that were 1544726e168dc09fb23f53c7b004f8e919421ee91806Chris Lattner /// concatenated in translation phase #6 to form this string literal. 1545726e168dc09fb23f53c7b004f8e919421ee91806Chris Lattner unsigned getNumConcatenated() const { return NumConcatenated; } 15461eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1547726e168dc09fb23f53c7b004f8e919421ee91806Chris Lattner SourceLocation getStrTokenLoc(unsigned TokNum) const { 1548726e168dc09fb23f53c7b004f8e919421ee91806Chris Lattner assert(TokNum < NumConcatenated && "Invalid tok number"); 1549726e168dc09fb23f53c7b004f8e919421ee91806Chris Lattner return TokLocs[TokNum]; 1550726e168dc09fb23f53c7b004f8e919421ee91806Chris Lattner } 15511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump void setStrTokenLoc(unsigned TokNum, SourceLocation L) { 1552673ecd6a4a9f7c12fb6f76f84f654dbdcdc89e76Douglas Gregor assert(TokNum < NumConcatenated && "Invalid tok number"); 1553673ecd6a4a9f7c12fb6f76f84f654dbdcdc89e76Douglas Gregor TokLocs[TokNum] = L; 1554673ecd6a4a9f7c12fb6f76f84f654dbdcdc89e76Douglas Gregor } 1555ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 155608f92e3a5dead1f1ee656678a7f06e43279d6e50Chris Lattner /// getLocationOfByte - Return a source location that points to the specified 155708f92e3a5dead1f1ee656678a7f06e43279d6e50Chris Lattner /// byte of this string literal. 155808f92e3a5dead1f1ee656678a7f06e43279d6e50Chris Lattner /// 155908f92e3a5dead1f1ee656678a7f06e43279d6e50Chris Lattner /// Strings are amazingly complex. They can be formed from multiple tokens 156008f92e3a5dead1f1ee656678a7f06e43279d6e50Chris Lattner /// and can have escape sequences in them in addition to the usual trigraph 156108f92e3a5dead1f1ee656678a7f06e43279d6e50Chris Lattner /// and escaped newline business. This routine handles this complexity. 156208f92e3a5dead1f1ee656678a7f06e43279d6e50Chris Lattner /// 156308f92e3a5dead1f1ee656678a7f06e43279d6e50Chris Lattner SourceLocation getLocationOfByte(unsigned ByteNo, const SourceManager &SM, 156408f92e3a5dead1f1ee656678a7f06e43279d6e50Chris Lattner const LangOptions &Features, 156508f92e3a5dead1f1ee656678a7f06e43279d6e50Chris Lattner const TargetInfo &Target) const; 1566673ecd6a4a9f7c12fb6f76f84f654dbdcdc89e76Douglas Gregor 1567b137299ce5bb6c36fbba651858600857fda4dd50Chris Lattner typedef const SourceLocation *tokloc_iterator; 1568b137299ce5bb6c36fbba651858600857fda4dd50Chris Lattner tokloc_iterator tokloc_begin() const { return TokLocs; } 1569b137299ce5bb6c36fbba651858600857fda4dd50Chris Lattner tokloc_iterator tokloc_end() const { return TokLocs+NumConcatenated; } 15705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 157165d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocStart() const LLVM_READONLY { return TokLocs[0]; } 157265d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocEnd() const LLVM_READONLY { 157365d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen return TokLocs[NumConcatenated - 1]; 15745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 157565d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen 15761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump static bool classof(const Stmt *T) { 15771eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return T->getStmtClass() == StringLiteralClass; 15785f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 15791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 158077ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek // Iterators 158163c00d7f35fa060c0a446c9df3a4402d9c7757feJohn McCall child_range children() { return child_range(); } 15825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer}; 15835f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 15845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// ParenExpr - This represents a parethesized expression, e.g. "(1)". This 15855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// AST node is only formed if full location information is requested. 15865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass ParenExpr : public Expr { 15875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceLocation L, R; 15885549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek Stmt *Val; 15895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerpublic: 15905f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ParenExpr(SourceLocation l, SourceLocation r, Expr *val) 1591898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor : Expr(ParenExprClass, val->getType(), 1592f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall val->getValueKind(), val->getObjectKind(), 1593bebbe0d9b7568ce43a464286bee49429489ef483Douglas Gregor val->isTypeDependent(), val->isValueDependent(), 1594561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor val->isInstantiationDependent(), 1595bebbe0d9b7568ce43a464286bee49429489ef483Douglas Gregor val->containsUnexpandedParameterPack()), 1596898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor L(l), R(r), Val(val) {} 15971eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1598c04db4feefa2b0dbbc6876cb4eeeee108aa6791dDouglas Gregor /// \brief Construct an empty parenthesized expression. 15991eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump explicit ParenExpr(EmptyShell Empty) 1600c04db4feefa2b0dbbc6876cb4eeeee108aa6791dDouglas Gregor : Expr(ParenExprClass, Empty) { } 1601c04db4feefa2b0dbbc6876cb4eeeee108aa6791dDouglas Gregor 16025549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek const Expr *getSubExpr() const { return cast<Expr>(Val); } 16035549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek Expr *getSubExpr() { return cast<Expr>(Val); } 1604c04db4feefa2b0dbbc6876cb4eeeee108aa6791dDouglas Gregor void setSubExpr(Expr *E) { Val = E; } 1605c04db4feefa2b0dbbc6876cb4eeeee108aa6791dDouglas Gregor 160665d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocStart() const LLVM_READONLY { return L; } 160765d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocEnd() const LLVM_READONLY { return R; } 16085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1609313a81dd820c9b2c0203bdcd974c781a81e4f0cfDouglas Gregor /// \brief Get the location of the left parentheses '('. 1610313a81dd820c9b2c0203bdcd974c781a81e4f0cfDouglas Gregor SourceLocation getLParen() const { return L; } 1611c04db4feefa2b0dbbc6876cb4eeeee108aa6791dDouglas Gregor void setLParen(SourceLocation Loc) { L = Loc; } 1612313a81dd820c9b2c0203bdcd974c781a81e4f0cfDouglas Gregor 1613313a81dd820c9b2c0203bdcd974c781a81e4f0cfDouglas Gregor /// \brief Get the location of the right parentheses ')'. 1614313a81dd820c9b2c0203bdcd974c781a81e4f0cfDouglas Gregor SourceLocation getRParen() const { return R; } 1615c04db4feefa2b0dbbc6876cb4eeeee108aa6791dDouglas Gregor void setRParen(SourceLocation Loc) { R = Loc; } 1616313a81dd820c9b2c0203bdcd974c781a81e4f0cfDouglas Gregor 16171eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump static bool classof(const Stmt *T) { 16181eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return T->getStmtClass() == ParenExprClass; 16195f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 16201eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 162177ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek // Iterators 162263c00d7f35fa060c0a446c9df3a4402d9c7757feJohn McCall child_range children() { return child_range(&Val, &Val+1); } 16235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer}; 16245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 16255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 16260518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl/// UnaryOperator - This represents the unary-expression's (except sizeof and 16270518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl/// alignof), the postinc/postdec operators from postfix-expression, and various 16285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// extensions. 1629dbb36971c68ea944ac4b1fbe2d97fe7cca3b20acChris Lattner/// 1630dbb36971c68ea944ac4b1fbe2d97fe7cca3b20acChris Lattner/// Notes on various nodes: 1631dbb36971c68ea944ac4b1fbe2d97fe7cca3b20acChris Lattner/// 1632dbb36971c68ea944ac4b1fbe2d97fe7cca3b20acChris Lattner/// Real/Imag - These return the real/imag part of a complex operand. If 1633dbb36971c68ea944ac4b1fbe2d97fe7cca3b20acChris Lattner/// applied to a non-complex value, the former returns its operand and the 1634dbb36971c68ea944ac4b1fbe2d97fe7cca3b20acChris Lattner/// later returns zero in the type of the operand. 1635dbb36971c68ea944ac4b1fbe2d97fe7cca3b20acChris Lattner/// 16365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass UnaryOperator : public Expr { 16375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerpublic: 16385baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall typedef UnaryOperatorKind Opcode; 16395baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall 16405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerprivate: 16410799c53fc2bb7acf937c8a8e165033dba1a5aba3John McCall unsigned Opc : 5; 16425f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceLocation Loc; 16430799c53fc2bb7acf937c8a8e165033dba1a5aba3John McCall Stmt *Val; 16441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumppublic: 16455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1646f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall UnaryOperator(Expr *input, Opcode opc, QualType type, 1647f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall ExprValueKind VK, ExprObjectKind OK, SourceLocation l) 1648f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall : Expr(UnaryOperatorClass, type, VK, OK, 1649de7e66256b1bdfcf6526994825a8c8fced52a31cEli Friedman input->isTypeDependent() || type->isDependentType(), 1650bebbe0d9b7568ce43a464286bee49429489ef483Douglas Gregor input->isValueDependent(), 1651ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie (input->isInstantiationDependent() || 1652561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor type->isInstantiationDependentType()), 1653bebbe0d9b7568ce43a464286bee49429489ef483Douglas Gregor input->containsUnexpandedParameterPack()), 16540799c53fc2bb7acf937c8a8e165033dba1a5aba3John McCall Opc(opc), Loc(l), Val(input) {} 16555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 16560b0b77fa29c74c99a77548ed86ca8a04f7cf6b02Douglas Gregor /// \brief Build an empty unary operator. 16571eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump explicit UnaryOperator(EmptyShell Empty) 16582de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall : Expr(UnaryOperatorClass, Empty), Opc(UO_AddrOf) { } 16590b0b77fa29c74c99a77548ed86ca8a04f7cf6b02Douglas Gregor 16600799c53fc2bb7acf937c8a8e165033dba1a5aba3John McCall Opcode getOpcode() const { return static_cast<Opcode>(Opc); } 16610b0b77fa29c74c99a77548ed86ca8a04f7cf6b02Douglas Gregor void setOpcode(Opcode O) { Opc = O; } 16620b0b77fa29c74c99a77548ed86ca8a04f7cf6b02Douglas Gregor 16635549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek Expr *getSubExpr() const { return cast<Expr>(Val); } 16640b0b77fa29c74c99a77548ed86ca8a04f7cf6b02Douglas Gregor void setSubExpr(Expr *E) { Val = E; } 16650b0b77fa29c74c99a77548ed86ca8a04f7cf6b02Douglas Gregor 16665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// getOperatorLoc - Return the location of the operator. 16675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceLocation getOperatorLoc() const { return Loc; } 16680b0b77fa29c74c99a77548ed86ca8a04f7cf6b02Douglas Gregor void setOperatorLoc(SourceLocation L) { Loc = L; } 16690b0b77fa29c74c99a77548ed86ca8a04f7cf6b02Douglas Gregor 16705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// isPostfix - Return true if this is a postfix operation, like x++. 16712085fd6cd22ec5c268175251db10d7c60caf7aaaChris Lattner static bool isPostfix(Opcode Op) { 16722de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall return Op == UO_PostInc || Op == UO_PostDec; 16732085fd6cd22ec5c268175251db10d7c60caf7aaaChris Lattner } 16745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1675cc7bd10c0de9449b795bda3c5dcc6d83cc48436bZhanyong Wan /// isPrefix - Return true if this is a prefix operation, like --x. 16762085fd6cd22ec5c268175251db10d7c60caf7aaaChris Lattner static bool isPrefix(Opcode Op) { 16772de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall return Op == UO_PreInc || Op == UO_PreDec; 16782085fd6cd22ec5c268175251db10d7c60caf7aaaChris Lattner } 16795a56ac30d04e8f0431a08980885662a47a6308aaTed Kremenek 16800799c53fc2bb7acf937c8a8e165033dba1a5aba3John McCall bool isPrefix() const { return isPrefix(getOpcode()); } 16810799c53fc2bb7acf937c8a8e165033dba1a5aba3John McCall bool isPostfix() const { return isPostfix(getOpcode()); } 16823c3b7f90a863af43fa63043d396553ecf205351cJohn McCall 16833c3b7f90a863af43fa63043d396553ecf205351cJohn McCall static bool isIncrementOp(Opcode Op) { 16843c3b7f90a863af43fa63043d396553ecf205351cJohn McCall return Op == UO_PreInc || Op == UO_PostInc; 16853c3b7f90a863af43fa63043d396553ecf205351cJohn McCall } 16862de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall bool isIncrementOp() const { 16873c3b7f90a863af43fa63043d396553ecf205351cJohn McCall return isIncrementOp(getOpcode()); 16883c3b7f90a863af43fa63043d396553ecf205351cJohn McCall } 16893c3b7f90a863af43fa63043d396553ecf205351cJohn McCall 16903c3b7f90a863af43fa63043d396553ecf205351cJohn McCall static bool isDecrementOp(Opcode Op) { 16913c3b7f90a863af43fa63043d396553ecf205351cJohn McCall return Op == UO_PreDec || Op == UO_PostDec; 16922de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall } 16933c3b7f90a863af43fa63043d396553ecf205351cJohn McCall bool isDecrementOp() const { 16943c3b7f90a863af43fa63043d396553ecf205351cJohn McCall return isDecrementOp(getOpcode()); 16953c3b7f90a863af43fa63043d396553ecf205351cJohn McCall } 16963c3b7f90a863af43fa63043d396553ecf205351cJohn McCall 16973c3b7f90a863af43fa63043d396553ecf205351cJohn McCall static bool isIncrementDecrementOp(Opcode Op) { return Op <= UO_PreDec; } 16982de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall bool isIncrementDecrementOp() const { 16993c3b7f90a863af43fa63043d396553ecf205351cJohn McCall return isIncrementDecrementOp(getOpcode()); 17002de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall } 17013c3b7f90a863af43fa63043d396553ecf205351cJohn McCall 17022de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall static bool isArithmeticOp(Opcode Op) { 17032de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall return Op >= UO_Plus && Op <= UO_LNot; 17042de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall } 17050799c53fc2bb7acf937c8a8e165033dba1a5aba3John McCall bool isArithmeticOp() const { return isArithmeticOp(getOpcode()); } 17061eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 17075f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// getOpcodeStr - Turn an Opcode enum value into the punctuation char it 17085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// corresponds to, e.g. "sizeof" or "[pre]++" 17090bea86307eb8c16339315a1e261fc490eb505c5bDavid Blaikie static StringRef getOpcodeStr(Opcode Op); 17105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1711bc736fceca6f0bca31d16003a7587857190408fbDouglas Gregor /// \brief Retrieve the unary opcode that corresponds to the given 1712bc736fceca6f0bca31d16003a7587857190408fbDouglas Gregor /// overloaded operator. 1713bc736fceca6f0bca31d16003a7587857190408fbDouglas Gregor static Opcode getOverloadedOpcode(OverloadedOperatorKind OO, bool Postfix); 1714bc736fceca6f0bca31d16003a7587857190408fbDouglas Gregor 1715bc736fceca6f0bca31d16003a7587857190408fbDouglas Gregor /// \brief Retrieve the overloaded operator kind that corresponds to 1716bc736fceca6f0bca31d16003a7587857190408fbDouglas Gregor /// the given unary opcode. 1717bc736fceca6f0bca31d16003a7587857190408fbDouglas Gregor static OverloadedOperatorKind getOverloadedOperator(Opcode Opc); 1718bc736fceca6f0bca31d16003a7587857190408fbDouglas Gregor 171965d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocStart() const LLVM_READONLY { 172065d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen return isPostfix() ? Val->getLocStart() : Loc; 172165d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen } 172265d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocEnd() const LLVM_READONLY { 172365d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen return isPostfix() ? Loc : Val->getLocEnd(); 17245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 17254f311183be3d923da9fbe8702c453688b4c426a9Daniel Dunbar SourceLocation getExprLoc() const LLVM_READONLY { return Loc; } 17261eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 17271eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump static bool classof(const Stmt *T) { 17281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return T->getStmtClass() == UnaryOperatorClass; 17295f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 17301eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 173177ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek // Iterators 173263c00d7f35fa060c0a446c9df3a4402d9c7757feJohn McCall child_range children() { return child_range(&Val, &Val+1); } 17335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer}; 17345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 17358ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor/// OffsetOfExpr - [C99 7.17] - This represents an expression of the form 17368ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor/// offsetof(record-type, member-designator). For example, given: 17378ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor/// @code 17388ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor/// struct S { 17398ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor/// float f; 1740ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie/// double d; 17418ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor/// }; 17428ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor/// struct T { 17438ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor/// int i; 17448ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor/// struct S s[10]; 17458ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor/// }; 17468ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor/// @endcode 1747ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie/// we can represent and evaluate the expression @c offsetof(struct T, s[2].d). 17488ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor 17498ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregorclass OffsetOfExpr : public Expr { 17508ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregorpublic: 17518ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor // __builtin_offsetof(type, identifier(.identifier|[expr])*) 17528ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor class OffsetOfNode { 17538ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor public: 17548ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor /// \brief The kind of offsetof node we have. 17558ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor enum Kind { 1756cc8a5d5f90bbbbcb46f342117b851b7e07ec34f1Douglas Gregor /// \brief An index into an array. 17578ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor Array = 0x00, 1758cc8a5d5f90bbbbcb46f342117b851b7e07ec34f1Douglas Gregor /// \brief A field. 17598ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor Field = 0x01, 1760cc8a5d5f90bbbbcb46f342117b851b7e07ec34f1Douglas Gregor /// \brief A field in a dependent type, known only by its name. 1761cc8a5d5f90bbbbcb46f342117b851b7e07ec34f1Douglas Gregor Identifier = 0x02, 1762cc8a5d5f90bbbbcb46f342117b851b7e07ec34f1Douglas Gregor /// \brief An implicit indirection through a C++ base class, when the 1763cc8a5d5f90bbbbcb46f342117b851b7e07ec34f1Douglas Gregor /// field found is in a base class. 1764cc8a5d5f90bbbbcb46f342117b851b7e07ec34f1Douglas Gregor Base = 0x03 17658ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor }; 17668ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor 17678ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor private: 17688ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor enum { MaskBits = 2, Mask = 0x03 }; 1769ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 17708ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor /// \brief The source range that covers this part of the designator. 17718ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor SourceRange Range; 1772ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 17738ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor /// \brief The data describing the designator, which comes in three 17748ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor /// different forms, depending on the lower two bits. 1775ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie /// - An unsigned index into the array of Expr*'s stored after this node 17768ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor /// in memory, for [constant-expression] designators. 17778ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor /// - A FieldDecl*, for references to a known field. 17788ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor /// - An IdentifierInfo*, for references to a field with a given name 17798ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor /// when the class type is dependent. 1780ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie /// - A CXXBaseSpecifier*, for references that look at a field in a 1781cc8a5d5f90bbbbcb46f342117b851b7e07ec34f1Douglas Gregor /// base class. 17828ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor uintptr_t Data; 1783ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 17848ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor public: 17858ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor /// \brief Create an offsetof node that refers to an array element. 1786ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie OffsetOfNode(SourceLocation LBracketLoc, unsigned Index, 17878ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor SourceLocation RBracketLoc) 17888ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor : Range(LBracketLoc, RBracketLoc), Data((Index << 2) | Array) { } 1789ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 17908ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor /// \brief Create an offsetof node that refers to a field. 1791ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie OffsetOfNode(SourceLocation DotLoc, FieldDecl *Field, 17928ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor SourceLocation NameLoc) 1793ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie : Range(DotLoc.isValid()? DotLoc : NameLoc, NameLoc), 17948ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor Data(reinterpret_cast<uintptr_t>(Field) | OffsetOfNode::Field) { } 1795ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 17968ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor /// \brief Create an offsetof node that refers to an identifier. 17978ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor OffsetOfNode(SourceLocation DotLoc, IdentifierInfo *Name, 17988ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor SourceLocation NameLoc) 1799ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie : Range(DotLoc.isValid()? DotLoc : NameLoc, NameLoc), 18008ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor Data(reinterpret_cast<uintptr_t>(Name) | Identifier) { } 1801cc8a5d5f90bbbbcb46f342117b851b7e07ec34f1Douglas Gregor 1802cc8a5d5f90bbbbcb46f342117b851b7e07ec34f1Douglas Gregor /// \brief Create an offsetof node that refers into a C++ base class. 1803cc8a5d5f90bbbbcb46f342117b851b7e07ec34f1Douglas Gregor explicit OffsetOfNode(const CXXBaseSpecifier *Base) 1804cc8a5d5f90bbbbcb46f342117b851b7e07ec34f1Douglas Gregor : Range(), Data(reinterpret_cast<uintptr_t>(Base) | OffsetOfNode::Base) {} 1805ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 18068ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor /// \brief Determine what kind of offsetof node this is. 1807ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie Kind getKind() const { 18088ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor return static_cast<Kind>(Data & Mask); 18098ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor } 1810ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 18118ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor /// \brief For an array element node, returns the index into the array 18128ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor /// of expressions. 18138ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor unsigned getArrayExprIndex() const { 18148ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor assert(getKind() == Array); 18158ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor return Data >> 2; 18168ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor } 18178ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor 18188ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor /// \brief For a field offsetof node, returns the field. 18198ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor FieldDecl *getField() const { 18208ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor assert(getKind() == Field); 1821cc8a5d5f90bbbbcb46f342117b851b7e07ec34f1Douglas Gregor return reinterpret_cast<FieldDecl *>(Data & ~(uintptr_t)Mask); 18228ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor } 1823ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 18248ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor /// \brief For a field or identifier offsetof node, returns the name of 18258ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor /// the field. 18268ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor IdentifierInfo *getFieldName() const; 1827ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 1828cc8a5d5f90bbbbcb46f342117b851b7e07ec34f1Douglas Gregor /// \brief For a base class node, returns the base specifier. 1829cc8a5d5f90bbbbcb46f342117b851b7e07ec34f1Douglas Gregor CXXBaseSpecifier *getBase() const { 1830cc8a5d5f90bbbbcb46f342117b851b7e07ec34f1Douglas Gregor assert(getKind() == Base); 1831ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie return reinterpret_cast<CXXBaseSpecifier *>(Data & ~(uintptr_t)Mask); 1832cc8a5d5f90bbbbcb46f342117b851b7e07ec34f1Douglas Gregor } 1833ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 18348ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor /// \brief Retrieve the source range that covers this offsetof node. 18358ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor /// 18368ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor /// For an array element node, the source range contains the locations of 18378ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor /// the square brackets. For a field or identifier node, the source range 1838ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie /// contains the location of the period (if there is one) and the 18398ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor /// identifier. 1840aa49a7d70e58dac2aeb40664ba16d2ea571b8c95Daniel Dunbar SourceRange getSourceRange() const LLVM_READONLY { return Range; } 184165d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocStart() const LLVM_READONLY { return Range.getBegin(); } 184265d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocEnd() const LLVM_READONLY { return Range.getEnd(); } 18438ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor }; 18448ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor 18458ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregorprivate: 1846ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 18478ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor SourceLocation OperatorLoc, RParenLoc; 18488ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor // Base type; 18498ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor TypeSourceInfo *TSInfo; 18508ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor // Number of sub-components (i.e. instances of OffsetOfNode). 18518ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor unsigned NumComps; 18528ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor // Number of sub-expressions (i.e. array subscript expressions). 18538ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor unsigned NumExprs; 1854ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 1855ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie OffsetOfExpr(ASTContext &C, QualType type, 18568ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor SourceLocation OperatorLoc, TypeSourceInfo *tsi, 18573b6bef9a213249c6ab6d67c07b1ac6380961be3eBenjamin Kramer ArrayRef<OffsetOfNode> comps, ArrayRef<Expr*> exprs, 18588ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor SourceLocation RParenLoc); 18598ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor 18608ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor explicit OffsetOfExpr(unsigned numComps, unsigned numExprs) 18618ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor : Expr(OffsetOfExprClass, EmptyShell()), 1862ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie TSInfo(0), NumComps(numComps), NumExprs(numExprs) {} 18638ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor 18648ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregorpublic: 1865ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 1866ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie static OffsetOfExpr *Create(ASTContext &C, QualType type, 1867ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie SourceLocation OperatorLoc, TypeSourceInfo *tsi, 18683b6bef9a213249c6ab6d67c07b1ac6380961be3eBenjamin Kramer ArrayRef<OffsetOfNode> comps, 18693b6bef9a213249c6ab6d67c07b1ac6380961be3eBenjamin Kramer ArrayRef<Expr*> exprs, SourceLocation RParenLoc); 18708ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor 1871ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie static OffsetOfExpr *CreateEmpty(ASTContext &C, 18728ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor unsigned NumComps, unsigned NumExprs); 18738ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor 18748ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor /// getOperatorLoc - Return the location of the operator. 18758ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor SourceLocation getOperatorLoc() const { return OperatorLoc; } 18768ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor void setOperatorLoc(SourceLocation L) { OperatorLoc = L; } 18778ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor 18788ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor /// \brief Return the location of the right parentheses. 18798ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor SourceLocation getRParenLoc() const { return RParenLoc; } 18808ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor void setRParenLoc(SourceLocation R) { RParenLoc = R; } 1881ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 18828ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor TypeSourceInfo *getTypeSourceInfo() const { 18838ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor return TSInfo; 18848ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor } 18858ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor void setTypeSourceInfo(TypeSourceInfo *tsi) { 18868ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor TSInfo = tsi; 18878ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor } 1888ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 18898cad3046be06ea73ff8892d947697a21d7a440d3Peter Collingbourne const OffsetOfNode &getComponent(unsigned Idx) const { 18908ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor assert(Idx < NumComps && "Subscript out of range"); 18918cad3046be06ea73ff8892d947697a21d7a440d3Peter Collingbourne return reinterpret_cast<const OffsetOfNode *> (this + 1)[Idx]; 18928ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor } 18938ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor 18948ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor void setComponent(unsigned Idx, OffsetOfNode ON) { 18958ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor assert(Idx < NumComps && "Subscript out of range"); 18968ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor reinterpret_cast<OffsetOfNode *> (this + 1)[Idx] = ON; 18978ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor } 1898ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 18998ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor unsigned getNumComponents() const { 19008ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor return NumComps; 19018ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor } 19028ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor 19038ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor Expr* getIndexExpr(unsigned Idx) { 19048ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor assert(Idx < NumExprs && "Subscript out of range"); 19058ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor return reinterpret_cast<Expr **>( 19068ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor reinterpret_cast<OffsetOfNode *>(this+1) + NumComps)[Idx]; 19078ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor } 19088cad3046be06ea73ff8892d947697a21d7a440d3Peter Collingbourne const Expr *getIndexExpr(unsigned Idx) const { 19098cad3046be06ea73ff8892d947697a21d7a440d3Peter Collingbourne return const_cast<OffsetOfExpr*>(this)->getIndexExpr(Idx); 19108cad3046be06ea73ff8892d947697a21d7a440d3Peter Collingbourne } 19118ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor 19128ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor void setIndexExpr(unsigned Idx, Expr* E) { 19138ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor assert(Idx < NumComps && "Subscript out of range"); 19148ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor reinterpret_cast<Expr **>( 19158ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor reinterpret_cast<OffsetOfNode *>(this+1) + NumComps)[Idx] = E; 19168ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor } 1917ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 19188ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor unsigned getNumExpressions() const { 19198ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor return NumExprs; 19208ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor } 19218ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor 192265d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocStart() const LLVM_READONLY { return OperatorLoc; } 192365d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocEnd() const LLVM_READONLY { return RParenLoc; } 19248ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor 19258ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor static bool classof(const Stmt *T) { 19268ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor return T->getStmtClass() == OffsetOfExprClass; 19278ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor } 19288ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor 19298ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor // Iterators 193063c00d7f35fa060c0a446c9df3a4402d9c7757feJohn McCall child_range children() { 193163c00d7f35fa060c0a446c9df3a4402d9c7757feJohn McCall Stmt **begin = 193263c00d7f35fa060c0a446c9df3a4402d9c7757feJohn McCall reinterpret_cast<Stmt**>(reinterpret_cast<OffsetOfNode*>(this + 1) 193363c00d7f35fa060c0a446c9df3a4402d9c7757feJohn McCall + NumComps); 193463c00d7f35fa060c0a446c9df3a4402d9c7757feJohn McCall return child_range(begin, begin + NumExprs); 193563c00d7f35fa060c0a446c9df3a4402d9c7757feJohn McCall } 19368ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor}; 19378ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor 1938f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne/// UnaryExprOrTypeTraitExpr - expression with either a type or (unevaluated) 1939f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne/// expression operand. Used for sizeof/alignof (C99 6.5.3.4) and 1940f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne/// vec_step (OpenCL 1.1 6.11.12). 1941f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourneclass UnaryExprOrTypeTraitExpr : public Expr { 1942d457589fc69dc7a9c80cd74d317c0b81a35a27c9Sebastian Redl union { 1943a93c934af4fbf97cbe8e649d82e68ccacfe57c95John McCall TypeSourceInfo *Ty; 1944d457589fc69dc7a9c80cd74d317c0b81a35a27c9Sebastian Redl Stmt *Ex; 1945d457589fc69dc7a9c80cd74d317c0b81a35a27c9Sebastian Redl } Argument; 19465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceLocation OpLoc, RParenLoc; 194742602bb40aefcc2751d4078ba88aacf4d965c9bdDouglas Gregor 19485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerpublic: 1949f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne UnaryExprOrTypeTraitExpr(UnaryExprOrTypeTrait ExprKind, TypeSourceInfo *TInfo, 1950f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne QualType resultType, SourceLocation op, 1951f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne SourceLocation rp) : 1952f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne Expr(UnaryExprOrTypeTraitExprClass, resultType, VK_RValue, OK_Ordinary, 1953ba49817c5b9f502602672861cf369fd0e53966e8Douglas Gregor false, // Never type-dependent (C++ [temp.dep.expr]p3). 19542850784bda09416fc7e9d57f5baa36c9351c757cSebastian Redl // Value-dependent if the argument is type-dependent. 1955bebbe0d9b7568ce43a464286bee49429489ef483Douglas Gregor TInfo->getType()->isDependentType(), 1956561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor TInfo->getType()->isInstantiationDependentType(), 1957bebbe0d9b7568ce43a464286bee49429489ef483Douglas Gregor TInfo->getType()->containsUnexpandedParameterPack()), 1958bb8a897f350f46475f36140480e82289f6baa020Benjamin Kramer OpLoc(op), RParenLoc(rp) { 1959bb8a897f350f46475f36140480e82289f6baa020Benjamin Kramer UnaryExprOrTypeTraitExprBits.Kind = ExprKind; 1960bb8a897f350f46475f36140480e82289f6baa020Benjamin Kramer UnaryExprOrTypeTraitExprBits.IsType = true; 1961a93c934af4fbf97cbe8e649d82e68ccacfe57c95John McCall Argument.Ty = TInfo; 1962ba49817c5b9f502602672861cf369fd0e53966e8Douglas Gregor } 1963ba49817c5b9f502602672861cf369fd0e53966e8Douglas Gregor 1964f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne UnaryExprOrTypeTraitExpr(UnaryExprOrTypeTrait ExprKind, Expr *E, 1965f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne QualType resultType, SourceLocation op, 1966f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne SourceLocation rp) : 1967f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne Expr(UnaryExprOrTypeTraitExprClass, resultType, VK_RValue, OK_Ordinary, 1968ba49817c5b9f502602672861cf369fd0e53966e8Douglas Gregor false, // Never type-dependent (C++ [temp.dep.expr]p3). 1969ba49817c5b9f502602672861cf369fd0e53966e8Douglas Gregor // Value-dependent if the argument is type-dependent. 1970bebbe0d9b7568ce43a464286bee49429489ef483Douglas Gregor E->isTypeDependent(), 1971561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor E->isInstantiationDependent(), 1972bebbe0d9b7568ce43a464286bee49429489ef483Douglas Gregor E->containsUnexpandedParameterPack()), 1973bb8a897f350f46475f36140480e82289f6baa020Benjamin Kramer OpLoc(op), RParenLoc(rp) { 1974bb8a897f350f46475f36140480e82289f6baa020Benjamin Kramer UnaryExprOrTypeTraitExprBits.Kind = ExprKind; 1975bb8a897f350f46475f36140480e82289f6baa020Benjamin Kramer UnaryExprOrTypeTraitExprBits.IsType = false; 1976ba49817c5b9f502602672861cf369fd0e53966e8Douglas Gregor Argument.Ex = E; 1977d457589fc69dc7a9c80cd74d317c0b81a35a27c9Sebastian Redl } 19780518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl 19790b0b77fa29c74c99a77548ed86ca8a04f7cf6b02Douglas Gregor /// \brief Construct an empty sizeof/alignof expression. 1980f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne explicit UnaryExprOrTypeTraitExpr(EmptyShell Empty) 1981f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne : Expr(UnaryExprOrTypeTraitExprClass, Empty) { } 19820b0b77fa29c74c99a77548ed86ca8a04f7cf6b02Douglas Gregor 1983f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne UnaryExprOrTypeTrait getKind() const { 1984bb8a897f350f46475f36140480e82289f6baa020Benjamin Kramer return static_cast<UnaryExprOrTypeTrait>(UnaryExprOrTypeTraitExprBits.Kind); 1985f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne } 1986bb8a897f350f46475f36140480e82289f6baa020Benjamin Kramer void setKind(UnaryExprOrTypeTrait K) { UnaryExprOrTypeTraitExprBits.Kind = K;} 19870b0b77fa29c74c99a77548ed86ca8a04f7cf6b02Douglas Gregor 1988bb8a897f350f46475f36140480e82289f6baa020Benjamin Kramer bool isArgumentType() const { return UnaryExprOrTypeTraitExprBits.IsType; } 19890518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl QualType getArgumentType() const { 19905ab75172051a6d2ea71a80a79e81c65519fd3462John McCall return getArgumentTypeInfo()->getType(); 19915ab75172051a6d2ea71a80a79e81c65519fd3462John McCall } 1992a93c934af4fbf97cbe8e649d82e68ccacfe57c95John McCall TypeSourceInfo *getArgumentTypeInfo() const { 19930518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl assert(isArgumentType() && "calling getArgumentType() when arg is expr"); 19945ab75172051a6d2ea71a80a79e81c65519fd3462John McCall return Argument.Ty; 19950518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl } 1996caae7b099a0324b7c15dc89a9b70969d5d7ce996Chris Lattner Expr *getArgumentExpr() { 19970518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl assert(!isArgumentType() && "calling getArgumentExpr() when arg is type"); 1998d457589fc69dc7a9c80cd74d317c0b81a35a27c9Sebastian Redl return static_cast<Expr*>(Argument.Ex); 19990518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl } 2000caae7b099a0324b7c15dc89a9b70969d5d7ce996Chris Lattner const Expr *getArgumentExpr() const { 2001f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne return const_cast<UnaryExprOrTypeTraitExpr*>(this)->getArgumentExpr(); 2002caae7b099a0324b7c15dc89a9b70969d5d7ce996Chris Lattner } 20030b0b77fa29c74c99a77548ed86ca8a04f7cf6b02Douglas Gregor 2004bb8a897f350f46475f36140480e82289f6baa020Benjamin Kramer void setArgument(Expr *E) { 2005bb8a897f350f46475f36140480e82289f6baa020Benjamin Kramer Argument.Ex = E; 2006bb8a897f350f46475f36140480e82289f6baa020Benjamin Kramer UnaryExprOrTypeTraitExprBits.IsType = false; 2007bb8a897f350f46475f36140480e82289f6baa020Benjamin Kramer } 2008a93c934af4fbf97cbe8e649d82e68ccacfe57c95John McCall void setArgument(TypeSourceInfo *TInfo) { 2009a93c934af4fbf97cbe8e649d82e68ccacfe57c95John McCall Argument.Ty = TInfo; 2010bb8a897f350f46475f36140480e82289f6baa020Benjamin Kramer UnaryExprOrTypeTraitExprBits.IsType = true; 20110b0b77fa29c74c99a77548ed86ca8a04f7cf6b02Douglas Gregor } 20120b0b77fa29c74c99a77548ed86ca8a04f7cf6b02Douglas Gregor 20130518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl /// Gets the argument type, or the type of the argument expression, whichever 20140518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl /// is appropriate. 20150518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl QualType getTypeOfArgument() const { 20160518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl return isArgumentType() ? getArgumentType() : getArgumentExpr()->getType(); 20170518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl } 20180518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl 201976e773a443be9f006610f46529e07d4c8d857680Chris Lattner SourceLocation getOperatorLoc() const { return OpLoc; } 20200b0b77fa29c74c99a77548ed86ca8a04f7cf6b02Douglas Gregor void setOperatorLoc(SourceLocation L) { OpLoc = L; } 20210b0b77fa29c74c99a77548ed86ca8a04f7cf6b02Douglas Gregor 20220b0b77fa29c74c99a77548ed86ca8a04f7cf6b02Douglas Gregor SourceLocation getRParenLoc() const { return RParenLoc; } 20230b0b77fa29c74c99a77548ed86ca8a04f7cf6b02Douglas Gregor void setRParenLoc(SourceLocation L) { RParenLoc = L; } 2024866b5c03e3b9c01cf496ad97b85a05afc917345bTed Kremenek 202565d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocStart() const LLVM_READONLY { return OpLoc; } 202665d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocEnd() const LLVM_READONLY { return RParenLoc; } 20275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 20281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump static bool classof(const Stmt *T) { 2029f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne return T->getStmtClass() == UnaryExprOrTypeTraitExprClass; 20305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 20311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 203277ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek // Iterators 203363c00d7f35fa060c0a446c9df3a4402d9c7757feJohn McCall child_range children(); 20345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer}; 20355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 20365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 20375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// Postfix Operators. 20385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 20395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 20405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// ArraySubscriptExpr - [C99 6.5.2.1] Array Subscripting. 20415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass ArraySubscriptExpr : public Expr { 204277ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek enum { LHS, RHS, END_EXPR=2 }; 20431eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Stmt* SubExprs[END_EXPR]; 20445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceLocation RBracketLoc; 20455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerpublic: 20462324512285caac0332bbbc6e4cab6245d2a370a1Ted Kremenek ArraySubscriptExpr(Expr *lhs, Expr *rhs, QualType t, 2047f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall ExprValueKind VK, ExprObjectKind OK, 204873d0d4fac161ed12926e010dcf8b448a8de6a2ecChris Lattner SourceLocation rbracketloc) 2049f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall : Expr(ArraySubscriptExprClass, t, VK, OK, 20502850784bda09416fc7e9d57f5baa36c9351c757cSebastian Redl lhs->isTypeDependent() || rhs->isTypeDependent(), 2051bebbe0d9b7568ce43a464286bee49429489ef483Douglas Gregor lhs->isValueDependent() || rhs->isValueDependent(), 2052561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor (lhs->isInstantiationDependent() || 2053561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor rhs->isInstantiationDependent()), 2054bebbe0d9b7568ce43a464286bee49429489ef483Douglas Gregor (lhs->containsUnexpandedParameterPack() || 2055bebbe0d9b7568ce43a464286bee49429489ef483Douglas Gregor rhs->containsUnexpandedParameterPack())), 20562850784bda09416fc7e9d57f5baa36c9351c757cSebastian Redl RBracketLoc(rbracketloc) { 205773d0d4fac161ed12926e010dcf8b448a8de6a2ecChris Lattner SubExprs[LHS] = lhs; 205873d0d4fac161ed12926e010dcf8b448a8de6a2ecChris Lattner SubExprs[RHS] = rhs; 205973d0d4fac161ed12926e010dcf8b448a8de6a2ecChris Lattner } 20601eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2061cb2ca73c1d7e76cc1358ce51457d2d5837d84f9bDouglas Gregor /// \brief Create an empty array subscript expression. 2062cb2ca73c1d7e76cc1358ce51457d2d5837d84f9bDouglas Gregor explicit ArraySubscriptExpr(EmptyShell Shell) 2063cb2ca73c1d7e76cc1358ce51457d2d5837d84f9bDouglas Gregor : Expr(ArraySubscriptExprClass, Shell) { } 2064cb2ca73c1d7e76cc1358ce51457d2d5837d84f9bDouglas Gregor 20652324512285caac0332bbbc6e4cab6245d2a370a1Ted Kremenek /// An array access can be written A[4] or 4[A] (both are equivalent). 20662324512285caac0332bbbc6e4cab6245d2a370a1Ted Kremenek /// - getBase() and getIdx() always present the normalized view: A[4]. 20672324512285caac0332bbbc6e4cab6245d2a370a1Ted Kremenek /// In this case getBase() returns "A" and getIdx() returns "4". 20682324512285caac0332bbbc6e4cab6245d2a370a1Ted Kremenek /// - getLHS() and getRHS() present the syntactic view. e.g. for 20692324512285caac0332bbbc6e4cab6245d2a370a1Ted Kremenek /// 4[A] getLHS() returns "4". 207033fd5c124aac15bab7cad95e4e0e7761356d2c06Christopher Lamb /// Note: Because vector element access is also written A[4] we must 207133fd5c124aac15bab7cad95e4e0e7761356d2c06Christopher Lamb /// predicate the format conversion in getBase and getIdx only on the 207233fd5c124aac15bab7cad95e4e0e7761356d2c06Christopher Lamb /// the type of the RHS, as it is possible for the LHS to be a vector of 207333fd5c124aac15bab7cad95e4e0e7761356d2c06Christopher Lamb /// integer type 20745549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek Expr *getLHS() { return cast<Expr>(SubExprs[LHS]); } 20755549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek const Expr *getLHS() const { return cast<Expr>(SubExprs[LHS]); } 2076cb2ca73c1d7e76cc1358ce51457d2d5837d84f9bDouglas Gregor void setLHS(Expr *E) { SubExprs[LHS] = E; } 2077cb2ca73c1d7e76cc1358ce51457d2d5837d84f9bDouglas Gregor 20785549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek Expr *getRHS() { return cast<Expr>(SubExprs[RHS]); } 20795549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek const Expr *getRHS() const { return cast<Expr>(SubExprs[RHS]); } 2080cb2ca73c1d7e76cc1358ce51457d2d5837d84f9bDouglas Gregor void setRHS(Expr *E) { SubExprs[RHS] = E; } 20811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 20821eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Expr *getBase() { 20835549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek return cast<Expr>(getRHS()->getType()->isIntegerType() ? getLHS():getRHS()); 208477ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek } 20851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 20861eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const Expr *getBase() const { 20875549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek return cast<Expr>(getRHS()->getType()->isIntegerType() ? getLHS():getRHS()); 20882324512285caac0332bbbc6e4cab6245d2a370a1Ted Kremenek } 20891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 20901eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Expr *getIdx() { 20915549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek return cast<Expr>(getRHS()->getType()->isIntegerType() ? getRHS():getLHS()); 20922324512285caac0332bbbc6e4cab6245d2a370a1Ted Kremenek } 20931eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 209477ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek const Expr *getIdx() const { 20955549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek return cast<Expr>(getRHS()->getType()->isIntegerType() ? getRHS():getLHS()); 20961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 20971eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 209865d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocStart() const LLVM_READONLY { 209965d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen return getLHS()->getLocStart(); 21005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 210165d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocEnd() const LLVM_READONLY { return RBracketLoc; } 21021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2103026dc96ac6ece60da5e1b98e2a71bd0ff0939fd8Chris Lattner SourceLocation getRBracketLoc() const { return RBracketLoc; } 2104cb2ca73c1d7e76cc1358ce51457d2d5837d84f9bDouglas Gregor void setRBracketLoc(SourceLocation L) { RBracketLoc = L; } 2105cb2ca73c1d7e76cc1358ce51457d2d5837d84f9bDouglas Gregor 210665d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getExprLoc() const LLVM_READONLY { 210765d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen return getBase()->getExprLoc(); 210865d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen } 21095f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 21101eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump static bool classof(const Stmt *T) { 21111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return T->getStmtClass() == ArraySubscriptExprClass; 21125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 21131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 211477ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek // Iterators 211563c00d7f35fa060c0a446c9df3a4402d9c7757feJohn McCall child_range children() { 211663c00d7f35fa060c0a446c9df3a4402d9c7757feJohn McCall return child_range(&SubExprs[0], &SubExprs[0]+END_EXPR); 211763c00d7f35fa060c0a446c9df3a4402d9c7757feJohn McCall } 21185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer}; 21195f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 21205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2121b4609806e9232593ece09ce08b630836e825865cDouglas Gregor/// CallExpr - Represents a function call (C99 6.5.2.2, C++ [expr.call]). 21221eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// CallExpr itself represents a normal function call, e.g., "f(x, 2)", 2123b4609806e9232593ece09ce08b630836e825865cDouglas Gregor/// while its subclasses may represent alternative syntax that (semantically) 21241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// results in a function call. For example, CXXOperatorCallExpr is 2125b4609806e9232593ece09ce08b630836e825865cDouglas Gregor/// a subclass for overloaded operator calls that use operator syntax, e.g., 2126b4609806e9232593ece09ce08b630836e825865cDouglas Gregor/// "str1 + str2" to resolve to a function call. 21275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass CallExpr : public Expr { 2128cc324ad80ab940efca006b0064f7ca70a6181816Peter Collingbourne enum { FN=0, PREARGS_START=1 }; 21295549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek Stmt **SubExprs; 21305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer unsigned NumArgs; 21315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceLocation RParenLoc; 21321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2133b4609806e9232593ece09ce08b630836e825865cDouglas Gregorprotected: 2134cc324ad80ab940efca006b0064f7ca70a6181816Peter Collingbourne // These versions of the constructor are for derived classes. 2135cc324ad80ab940efca006b0064f7ca70a6181816Peter Collingbourne CallExpr(ASTContext& C, StmtClass SC, Expr *fn, unsigned NumPreArgs, 21363b6bef9a213249c6ab6d67c07b1ac6380961be3eBenjamin Kramer ArrayRef<Expr*> args, QualType t, ExprValueKind VK, 2137cc324ad80ab940efca006b0064f7ca70a6181816Peter Collingbourne SourceLocation rparenloc); 2138cc324ad80ab940efca006b0064f7ca70a6181816Peter Collingbourne CallExpr(ASTContext &C, StmtClass SC, unsigned NumPreArgs, EmptyShell Empty); 2139cc324ad80ab940efca006b0064f7ca70a6181816Peter Collingbourne 2140cc324ad80ab940efca006b0064f7ca70a6181816Peter Collingbourne Stmt *getPreArg(unsigned i) { 2141cc324ad80ab940efca006b0064f7ca70a6181816Peter Collingbourne assert(i < getNumPreArgs() && "Prearg access out of range!"); 2142cc324ad80ab940efca006b0064f7ca70a6181816Peter Collingbourne return SubExprs[PREARGS_START+i]; 2143cc324ad80ab940efca006b0064f7ca70a6181816Peter Collingbourne } 2144cc324ad80ab940efca006b0064f7ca70a6181816Peter Collingbourne const Stmt *getPreArg(unsigned i) const { 2145cc324ad80ab940efca006b0064f7ca70a6181816Peter Collingbourne assert(i < getNumPreArgs() && "Prearg access out of range!"); 2146cc324ad80ab940efca006b0064f7ca70a6181816Peter Collingbourne return SubExprs[PREARGS_START+i]; 2147cc324ad80ab940efca006b0064f7ca70a6181816Peter Collingbourne } 2148cc324ad80ab940efca006b0064f7ca70a6181816Peter Collingbourne void setPreArg(unsigned i, Stmt *PreArg) { 2149cc324ad80ab940efca006b0064f7ca70a6181816Peter Collingbourne assert(i < getNumPreArgs() && "Prearg access out of range!"); 2150cc324ad80ab940efca006b0064f7ca70a6181816Peter Collingbourne SubExprs[PREARGS_START+i] = PreArg; 2151cc324ad80ab940efca006b0064f7ca70a6181816Peter Collingbourne } 2152cc324ad80ab940efca006b0064f7ca70a6181816Peter Collingbourne 2153cc324ad80ab940efca006b0064f7ca70a6181816Peter Collingbourne unsigned getNumPreArgs() const { return CallExprBits.NumPreArgs; } 215442602bb40aefcc2751d4078ba88aacf4d965c9bdDouglas Gregor 21555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerpublic: 21563b6bef9a213249c6ab6d67c07b1ac6380961be3eBenjamin Kramer CallExpr(ASTContext& C, Expr *fn, ArrayRef<Expr*> args, QualType t, 2157f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall ExprValueKind VK, SourceLocation rparenloc); 21581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 21591f0d0133b0e8d1f01f63951ee04927796b34740dDouglas Gregor /// \brief Build an empty call expression. 2160ba0a9006dbc4814e1e35f82812cb5a1dad65e8b8Argyrios Kyrtzidis CallExpr(ASTContext &C, StmtClass SC, EmptyShell Empty); 21611f0d0133b0e8d1f01f63951ee04927796b34740dDouglas Gregor 21625549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek const Expr *getCallee() const { return cast<Expr>(SubExprs[FN]); } 21635549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek Expr *getCallee() { return cast<Expr>(SubExprs[FN]); } 216418b2515e1bf8c86a4900792692e42fe1296be28dChris Lattner void setCallee(Expr *F) { SubExprs[FN] = F; } 2165a00425414e8c209cabc25d1826b200aeb94259afZhongxing Xu 2166d20254f2875d0004c57ee766f258dbcee29f4841Nuno Lopes Decl *getCalleeDecl(); 2167d20254f2875d0004c57ee766f258dbcee29f4841Nuno Lopes const Decl *getCalleeDecl() const { 2168d20254f2875d0004c57ee766f258dbcee29f4841Nuno Lopes return const_cast<CallExpr*>(this)->getCalleeDecl(); 2169d20254f2875d0004c57ee766f258dbcee29f4841Nuno Lopes } 2170d20254f2875d0004c57ee766f258dbcee29f4841Nuno Lopes 2171a00425414e8c209cabc25d1826b200aeb94259afZhongxing Xu /// \brief If the callee is a FunctionDecl, return it. Otherwise return 0. 2172a00425414e8c209cabc25d1826b200aeb94259afZhongxing Xu FunctionDecl *getDirectCallee(); 2173bc8d42c6f1565c0b2f93ad524edebfd7a4e6cac6Chris Lattner const FunctionDecl *getDirectCallee() const { 2174bc8d42c6f1565c0b2f93ad524edebfd7a4e6cac6Chris Lattner return const_cast<CallExpr*>(this)->getDirectCallee(); 2175bc8d42c6f1565c0b2f93ad524edebfd7a4e6cac6Chris Lattner } 2176a00425414e8c209cabc25d1826b200aeb94259afZhongxing Xu 21775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// getNumArgs - Return the number of actual arguments to this call. 21785f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// 21795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer unsigned getNumArgs() const { return NumArgs; } 21801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2181aa165f8458b51c546bebff947343e1a36f3594cbDouglas Gregor /// \brief Retrieve the call arguments. 2182cc324ad80ab940efca006b0064f7ca70a6181816Peter Collingbourne Expr **getArgs() { 2183cc324ad80ab940efca006b0064f7ca70a6181816Peter Collingbourne return reinterpret_cast<Expr **>(SubExprs+getNumPreArgs()+PREARGS_START); 2184cc324ad80ab940efca006b0064f7ca70a6181816Peter Collingbourne } 2185d0dcceae2a8ca0e37b5dd471a704de8583d49c95Richard Smith const Expr *const *getArgs() const { 2186d0dcceae2a8ca0e37b5dd471a704de8583d49c95Richard Smith return const_cast<CallExpr*>(this)->getArgs(); 2187d0dcceae2a8ca0e37b5dd471a704de8583d49c95Richard Smith } 2188ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 21895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// getArg - Return the specified argument. 21905f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Expr *getArg(unsigned Arg) { 21915f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer assert(Arg < NumArgs && "Arg access out of range!"); 2192cc324ad80ab940efca006b0064f7ca70a6181816Peter Collingbourne return cast<Expr>(SubExprs[Arg+getNumPreArgs()+PREARGS_START]); 21935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 21945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const Expr *getArg(unsigned Arg) const { 21955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer assert(Arg < NumArgs && "Arg access out of range!"); 2196cc324ad80ab940efca006b0064f7ca70a6181816Peter Collingbourne return cast<Expr>(SubExprs[Arg+getNumPreArgs()+PREARGS_START]); 21975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 21981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2199934f276cc5b45e19cd12ebb2d04fd7972a23865cSteve Naroff /// setArg - Set the specified argument. 2200934f276cc5b45e19cd12ebb2d04fd7972a23865cSteve Naroff void setArg(unsigned Arg, Expr *ArgExpr) { 2201934f276cc5b45e19cd12ebb2d04fd7972a23865cSteve Naroff assert(Arg < NumArgs && "Arg access out of range!"); 2202cc324ad80ab940efca006b0064f7ca70a6181816Peter Collingbourne SubExprs[Arg+getNumPreArgs()+PREARGS_START] = ArgExpr; 2203934f276cc5b45e19cd12ebb2d04fd7972a23865cSteve Naroff } 22041eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2205d18b3299debb7b0dbd9d34d9369189dc98c87f53Chris Lattner /// setNumArgs - This changes the number of arguments present in this call. 2206d18b3299debb7b0dbd9d34d9369189dc98c87f53Chris Lattner /// Any orphaned expressions are deleted by this, and any new operands are set 2207d18b3299debb7b0dbd9d34d9369189dc98c87f53Chris Lattner /// to null. 22088189cde56b4f6f938cd65f53c932fe1860d0204cTed Kremenek void setNumArgs(ASTContext& C, unsigned NumArgs); 22091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 22105549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek typedef ExprIterator arg_iterator; 22115549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek typedef ConstExprIterator const_arg_iterator; 22121eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2213cc324ad80ab940efca006b0064f7ca70a6181816Peter Collingbourne arg_iterator arg_begin() { return SubExprs+PREARGS_START+getNumPreArgs(); } 2214cc324ad80ab940efca006b0064f7ca70a6181816Peter Collingbourne arg_iterator arg_end() { 2215cc324ad80ab940efca006b0064f7ca70a6181816Peter Collingbourne return SubExprs+PREARGS_START+getNumPreArgs()+getNumArgs(); 2216cc324ad80ab940efca006b0064f7ca70a6181816Peter Collingbourne } 2217cc324ad80ab940efca006b0064f7ca70a6181816Peter Collingbourne const_arg_iterator arg_begin() const { 2218cc324ad80ab940efca006b0064f7ca70a6181816Peter Collingbourne return SubExprs+PREARGS_START+getNumPreArgs(); 2219cc324ad80ab940efca006b0064f7ca70a6181816Peter Collingbourne } 2220cc324ad80ab940efca006b0064f7ca70a6181816Peter Collingbourne const_arg_iterator arg_end() const { 2221cc324ad80ab940efca006b0064f7ca70a6181816Peter Collingbourne return SubExprs+PREARGS_START+getNumPreArgs()+getNumArgs(); 2222cc324ad80ab940efca006b0064f7ca70a6181816Peter Collingbourne } 22231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 22245846720f08a6b225484bfe663599c2b057a99bc8Ted Kremenek /// This method provides fast access to all the subexpressions of 22255846720f08a6b225484bfe663599c2b057a99bc8Ted Kremenek /// a CallExpr without going through the slower virtual child_iterator 22265846720f08a6b225484bfe663599c2b057a99bc8Ted Kremenek /// interface. This provides efficient reverse iteration of the 22275846720f08a6b225484bfe663599c2b057a99bc8Ted Kremenek /// subexpressions. This is currently used for CFG construction. 22285846720f08a6b225484bfe663599c2b057a99bc8Ted Kremenek ArrayRef<Stmt*> getRawSubExprs() { 22295846720f08a6b225484bfe663599c2b057a99bc8Ted Kremenek return ArrayRef<Stmt*>(SubExprs, 22305846720f08a6b225484bfe663599c2b057a99bc8Ted Kremenek getNumPreArgs() + PREARGS_START + getNumArgs()); 22315846720f08a6b225484bfe663599c2b057a99bc8Ted Kremenek } 22325846720f08a6b225484bfe663599c2b057a99bc8Ted Kremenek 22335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// getNumCommas - Return the number of commas that must have been present in 22345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// this function call. 22355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer unsigned getNumCommas() const { return NumArgs ? NumArgs - 1 : 0; } 22365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2237cb888967400a03504c88acedd5248d6778a82f46Chris Lattner /// isBuiltinCall - If this is a call to a builtin, return the builtin ID. If 2238cb888967400a03504c88acedd5248d6778a82f46Chris Lattner /// not, return 0. 2239180f47959a066795cc0f409433023af448bb0328Richard Smith unsigned isBuiltinCall() const; 22401eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2241ba57183965f117279342903edec19766e478c9a8Richard Smith /// \brief Returns \c true if this is a call to a builtin which does not 2242ba57183965f117279342903edec19766e478c9a8Richard Smith /// evaluate side-effects within its arguments. 2243ba57183965f117279342903edec19766e478c9a8Richard Smith bool isUnevaluatedBuiltinCall(ASTContext &Ctx) const; 2244ba57183965f117279342903edec19766e478c9a8Richard Smith 22451eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// getCallReturnType - Get the return type of the call expr. This is not 22461eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// always the type of the expr itself, if the return type is a reference 22476dde78f744382a5627a04f984a97049e0c4b5e73Anders Carlsson /// type. 22486dde78f744382a5627a04f984a97049e0c4b5e73Anders Carlsson QualType getCallReturnType() const; 22491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2250d18b3299debb7b0dbd9d34d9369189dc98c87f53Chris Lattner SourceLocation getRParenLoc() const { return RParenLoc; } 22511f0d0133b0e8d1f01f63951ee04927796b34740dDouglas Gregor void setRParenLoc(SourceLocation L) { RParenLoc = L; } 2252866b5c03e3b9c01cf496ad97b85a05afc917345bTed Kremenek 2253aa49a7d70e58dac2aeb40664ba16d2ea571b8c95Daniel Dunbar SourceLocation getLocStart() const LLVM_READONLY; 2254aa49a7d70e58dac2aeb40664ba16d2ea571b8c95Daniel Dunbar SourceLocation getLocEnd() const LLVM_READONLY; 22551eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 22561eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump static bool classof(const Stmt *T) { 22574bfe1968410ea8ffe3b4f629addd7c4bcf484765Sean Hunt return T->getStmtClass() >= firstCallExprConstant && 22584bfe1968410ea8ffe3b4f629addd7c4bcf484765Sean Hunt T->getStmtClass() <= lastCallExprConstant; 22595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 226088a3514f36de96b19cdf50141c640df1a5f13f6cDouglas Gregor 226177ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek // Iterators 226263c00d7f35fa060c0a446c9df3a4402d9c7757feJohn McCall child_range children() { 226363c00d7f35fa060c0a446c9df3a4402d9c7757feJohn McCall return child_range(&SubExprs[0], 226463c00d7f35fa060c0a446c9df3a4402d9c7757feJohn McCall &SubExprs[0]+NumArgs+getNumPreArgs()+PREARGS_START); 226563c00d7f35fa060c0a446c9df3a4402d9c7757feJohn McCall } 22665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer}; 22675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2268ddca44e86281bb7dcf5fdcaf1563434c524e3861Chris Lattner/// MemberExpr - [C99 6.5.2.3] Structure and Union Members. X->F and X.F. 22695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 22705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass MemberExpr : public Expr { 22716bb8017bb9e828d118e15e59d71c66bba323c364John McCall /// Extra data stored in some member expressions. 22726857c3e12c86fd0271eb46baab5b18756a94f4cbChandler Carruth struct MemberNameQualifier { 22736857c3e12c86fd0271eb46baab5b18756a94f4cbChandler Carruth /// \brief The nested-name-specifier that qualifies the name, including 22746857c3e12c86fd0271eb46baab5b18756a94f4cbChandler Carruth /// source-location information. 22756857c3e12c86fd0271eb46baab5b18756a94f4cbChandler Carruth NestedNameSpecifierLoc QualifierLoc; 22766857c3e12c86fd0271eb46baab5b18756a94f4cbChandler Carruth 22776857c3e12c86fd0271eb46baab5b18756a94f4cbChandler Carruth /// \brief The DeclAccessPair through which the MemberDecl was found due to 22786857c3e12c86fd0271eb46baab5b18756a94f4cbChandler Carruth /// name qualifiers. 2279161755a09898c95d21bfff33707da9ca41cd53c5John McCall DeclAccessPair FoundDecl; 22806bb8017bb9e828d118e15e59d71c66bba323c364John McCall }; 22816bb8017bb9e828d118e15e59d71c66bba323c364John McCall 2282ddca44e86281bb7dcf5fdcaf1563434c524e3861Chris Lattner /// Base - the expression for the base pointer or structure references. In 2283ddca44e86281bb7dcf5fdcaf1563434c524e3861Chris Lattner /// X.F, this is "X". 22845549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek Stmt *Base; 22851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2286ddca44e86281bb7dcf5fdcaf1563434c524e3861Chris Lattner /// MemberDecl - This is the decl being referenced by the field/member name. 2287ddca44e86281bb7dcf5fdcaf1563434c524e3861Chris Lattner /// In X.F, this is the decl referenced by F. 2288f595cc41c4d95fe323f8a2b209523de9956f874dEli Friedman ValueDecl *MemberDecl; 22891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 22902577743c5650c646fb705df01403707e94f2df04Abramo Bagnara /// MemberDNLoc - Provides source/type location info for the 22912577743c5650c646fb705df01403707e94f2df04Abramo Bagnara /// declaration name embedded in MemberDecl. 22922577743c5650c646fb705df01403707e94f2df04Abramo Bagnara DeclarationNameLoc MemberDNLoc; 22932577743c5650c646fb705df01403707e94f2df04Abramo Bagnara 2294bbf4b22b3166e5065f4475006d83678e3e1d00a3Benjamin Kramer /// MemberLoc - This is the location of the member name. 2295bbf4b22b3166e5065f4475006d83678e3e1d00a3Benjamin Kramer SourceLocation MemberLoc; 2296bbf4b22b3166e5065f4475006d83678e3e1d00a3Benjamin Kramer 2297ddca44e86281bb7dcf5fdcaf1563434c524e3861Chris Lattner /// IsArrow - True if this is "X->F", false if this is "X.F". 229883f6faf37d9bf58986bedc9bc0ea897a56b4dbadDouglas Gregor bool IsArrow : 1; 22991eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 230083f6faf37d9bf58986bedc9bc0ea897a56b4dbadDouglas Gregor /// \brief True if this member expression used a nested-name-specifier to 23016bb8017bb9e828d118e15e59d71c66bba323c364John McCall /// refer to the member, e.g., "x->Base::f", or found its member via a using 23026bb8017bb9e828d118e15e59d71c66bba323c364John McCall /// declaration. When true, a MemberNameQualifier 2303c4bf26fbdff42967d660f505a83f75a4df2cc752Douglas Gregor /// structure is allocated immediately after the MemberExpr. 23046bb8017bb9e828d118e15e59d71c66bba323c364John McCall bool HasQualifierOrFoundDecl : 1; 23051eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2306e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara /// \brief True if this member expression specified a template keyword 2307e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara /// and/or a template argument list explicitly, e.g., x->f<int>, 2308e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara /// x->template f, x->template f<int>. 2309e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara /// When true, an ASTTemplateKWAndArgsInfo structure and its 2310e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara /// TemplateArguments (if any) are allocated immediately after 2311e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara /// the MemberExpr or, if the member expression also has a qualifier, 2312e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara /// after the MemberNameQualifier structure. 2313e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara bool HasTemplateKWAndArgsInfo : 1; 23141eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 23157cc58b4c927fca539d43eaa58e00dca95946eb7cAbramo Bagnara /// \brief True if this member expression refers to a method that 23167cc58b4c927fca539d43eaa58e00dca95946eb7cAbramo Bagnara /// was resolved from an overloaded set having size greater than 1. 23177cc58b4c927fca539d43eaa58e00dca95946eb7cAbramo Bagnara bool HadMultipleCandidates : 1; 23187cc58b4c927fca539d43eaa58e00dca95946eb7cAbramo Bagnara 231983f6faf37d9bf58986bedc9bc0ea897a56b4dbadDouglas Gregor /// \brief Retrieve the qualifier that preceded the member name, if any. 23206bb8017bb9e828d118e15e59d71c66bba323c364John McCall MemberNameQualifier *getMemberQualifier() { 23216bb8017bb9e828d118e15e59d71c66bba323c364John McCall assert(HasQualifierOrFoundDecl); 23226bb8017bb9e828d118e15e59d71c66bba323c364John McCall return reinterpret_cast<MemberNameQualifier *> (this + 1); 232383f6faf37d9bf58986bedc9bc0ea897a56b4dbadDouglas Gregor } 232483f6faf37d9bf58986bedc9bc0ea897a56b4dbadDouglas Gregor 232583f6faf37d9bf58986bedc9bc0ea897a56b4dbadDouglas Gregor /// \brief Retrieve the qualifier that preceded the member name, if any. 23266bb8017bb9e828d118e15e59d71c66bba323c364John McCall const MemberNameQualifier *getMemberQualifier() const { 2327c4bf26fbdff42967d660f505a83f75a4df2cc752Douglas Gregor return const_cast<MemberExpr *>(this)->getMemberQualifier(); 2328c4bf26fbdff42967d660f505a83f75a4df2cc752Douglas Gregor } 23291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 23305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerpublic: 2331f595cc41c4d95fe323f8a2b209523de9956f874dEli Friedman MemberExpr(Expr *base, bool isarrow, ValueDecl *memberdecl, 2332f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall const DeclarationNameInfo &NameInfo, QualType ty, 2333f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall ExprValueKind VK, ExprObjectKind OK) 2334f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall : Expr(MemberExprClass, ty, VK, OK, 2335ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie base->isTypeDependent(), 2336561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor base->isValueDependent(), 2337561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor base->isInstantiationDependent(), 2338bebbe0d9b7568ce43a464286bee49429489ef483Douglas Gregor base->containsUnexpandedParameterPack()), 2339bbf4b22b3166e5065f4475006d83678e3e1d00a3Benjamin Kramer Base(base), MemberDecl(memberdecl), MemberDNLoc(NameInfo.getInfo()), 2340bbf4b22b3166e5065f4475006d83678e3e1d00a3Benjamin Kramer MemberLoc(NameInfo.getLoc()), IsArrow(isarrow), 2341e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara HasQualifierOrFoundDecl(false), HasTemplateKWAndArgsInfo(false), 23427cc58b4c927fca539d43eaa58e00dca95946eb7cAbramo Bagnara HadMultipleCandidates(false) { 23432577743c5650c646fb705df01403707e94f2df04Abramo Bagnara assert(memberdecl->getDeclName() == NameInfo.getName()); 23442577743c5650c646fb705df01403707e94f2df04Abramo Bagnara } 23452577743c5650c646fb705df01403707e94f2df04Abramo Bagnara 23462577743c5650c646fb705df01403707e94f2df04Abramo Bagnara // NOTE: this constructor should be used only when it is known that 23472577743c5650c646fb705df01403707e94f2df04Abramo Bagnara // the member name can not provide additional syntactic info 23482577743c5650c646fb705df01403707e94f2df04Abramo Bagnara // (i.e., source locations for C++ operator names or type source info 2349e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara // for constructors, destructors and conversion operators). 23502577743c5650c646fb705df01403707e94f2df04Abramo Bagnara MemberExpr(Expr *base, bool isarrow, ValueDecl *memberdecl, 2351f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall SourceLocation l, QualType ty, 2352f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall ExprValueKind VK, ExprObjectKind OK) 2353f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall : Expr(MemberExprClass, ty, VK, OK, 2354bebbe0d9b7568ce43a464286bee49429489ef483Douglas Gregor base->isTypeDependent(), base->isValueDependent(), 2355561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor base->isInstantiationDependent(), 2356bebbe0d9b7568ce43a464286bee49429489ef483Douglas Gregor base->containsUnexpandedParameterPack()), 2357bbf4b22b3166e5065f4475006d83678e3e1d00a3Benjamin Kramer Base(base), MemberDecl(memberdecl), MemberDNLoc(), MemberLoc(l), 23582577743c5650c646fb705df01403707e94f2df04Abramo Bagnara IsArrow(isarrow), 2359e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara HasQualifierOrFoundDecl(false), HasTemplateKWAndArgsInfo(false), 23607cc58b4c927fca539d43eaa58e00dca95946eb7cAbramo Bagnara HadMultipleCandidates(false) {} 2361510190777c4bd53e960eea4665b204778fec1b64Eli Friedman 23621eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump static MemberExpr *Create(ASTContext &C, Expr *base, bool isarrow, 236340d96a69c0e1e8c10f92d450c305a7aae696ca9cDouglas Gregor NestedNameSpecifierLoc QualifierLoc, 2364e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara SourceLocation TemplateKWLoc, 2365161755a09898c95d21bfff33707da9ca41cd53c5John McCall ValueDecl *memberdecl, DeclAccessPair founddecl, 23662577743c5650c646fb705df01403707e94f2df04Abramo Bagnara DeclarationNameInfo MemberNameInfo, 2367d5532b6cfff2977e0c59fa6ead7f7973984a620dJohn McCall const TemplateArgumentListInfo *targs, 2368f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall QualType ty, ExprValueKind VK, ExprObjectKind OK); 23691eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 237088a3514f36de96b19cdf50141c640df1a5f13f6cDouglas Gregor void setBase(Expr *E) { Base = E; } 23715549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek Expr *getBase() const { return cast<Expr>(Base); } 237257e8b05fe9ba03d410db9c161e032cb79c9ab5baDouglas Gregor 237357e8b05fe9ba03d410db9c161e032cb79c9ab5baDouglas Gregor /// \brief Retrieve the member declaration to which this expression refers. 237457e8b05fe9ba03d410db9c161e032cb79c9ab5baDouglas Gregor /// 237557e8b05fe9ba03d410db9c161e032cb79c9ab5baDouglas Gregor /// The returned declaration will either be a FieldDecl or (in C++) 237657e8b05fe9ba03d410db9c161e032cb79c9ab5baDouglas Gregor /// a CXXMethodDecl. 2377f595cc41c4d95fe323f8a2b209523de9956f874dEli Friedman ValueDecl *getMemberDecl() const { return MemberDecl; } 2378f595cc41c4d95fe323f8a2b209523de9956f874dEli Friedman void setMemberDecl(ValueDecl *D) { MemberDecl = D; } 23791f0d0133b0e8d1f01f63951ee04927796b34740dDouglas Gregor 23806bb8017bb9e828d118e15e59d71c66bba323c364John McCall /// \brief Retrieves the declaration found by lookup. 2381161755a09898c95d21bfff33707da9ca41cd53c5John McCall DeclAccessPair getFoundDecl() const { 23826bb8017bb9e828d118e15e59d71c66bba323c364John McCall if (!HasQualifierOrFoundDecl) 2383161755a09898c95d21bfff33707da9ca41cd53c5John McCall return DeclAccessPair::make(getMemberDecl(), 2384161755a09898c95d21bfff33707da9ca41cd53c5John McCall getMemberDecl()->getAccess()); 23856bb8017bb9e828d118e15e59d71c66bba323c364John McCall return getMemberQualifier()->FoundDecl; 23866bb8017bb9e828d118e15e59d71c66bba323c364John McCall } 23876bb8017bb9e828d118e15e59d71c66bba323c364John McCall 23881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// \brief Determines whether this member expression actually had 23890979c805475d1ba49b5d6ef93c4d2ce6d2eab6edDouglas Gregor /// a C++ nested-name-specifier prior to the name of the member, e.g., 23900979c805475d1ba49b5d6ef93c4d2ce6d2eab6edDouglas Gregor /// x->Base::foo. 23916bb8017bb9e828d118e15e59d71c66bba323c364John McCall bool hasQualifier() const { return getQualifier() != 0; } 23921eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 23931eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// \brief If the member name was qualified, retrieves the 239483f6faf37d9bf58986bedc9bc0ea897a56b4dbadDouglas Gregor /// nested-name-specifier that precedes the member name. Otherwise, returns 239583f6faf37d9bf58986bedc9bc0ea897a56b4dbadDouglas Gregor /// NULL. 23961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump NestedNameSpecifier *getQualifier() const { 23976bb8017bb9e828d118e15e59d71c66bba323c364John McCall if (!HasQualifierOrFoundDecl) 239883f6faf37d9bf58986bedc9bc0ea897a56b4dbadDouglas Gregor return 0; 23991eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 240040d96a69c0e1e8c10f92d450c305a7aae696ca9cDouglas Gregor return getMemberQualifier()->QualifierLoc.getNestedNameSpecifier(); 240140d96a69c0e1e8c10f92d450c305a7aae696ca9cDouglas Gregor } 240240d96a69c0e1e8c10f92d450c305a7aae696ca9cDouglas Gregor 2403ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie /// \brief If the member name was qualified, retrieves the 240440d96a69c0e1e8c10f92d450c305a7aae696ca9cDouglas Gregor /// nested-name-specifier that precedes the member name, with source-location 240540d96a69c0e1e8c10f92d450c305a7aae696ca9cDouglas Gregor /// information. 240640d96a69c0e1e8c10f92d450c305a7aae696ca9cDouglas Gregor NestedNameSpecifierLoc getQualifierLoc() const { 240740d96a69c0e1e8c10f92d450c305a7aae696ca9cDouglas Gregor if (!hasQualifier()) 240840d96a69c0e1e8c10f92d450c305a7aae696ca9cDouglas Gregor return NestedNameSpecifierLoc(); 2409ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 241040d96a69c0e1e8c10f92d450c305a7aae696ca9cDouglas Gregor return getMemberQualifier()->QualifierLoc; 241183f6faf37d9bf58986bedc9bc0ea897a56b4dbadDouglas Gregor } 2412c4bf26fbdff42967d660f505a83f75a4df2cc752Douglas Gregor 2413e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara /// \brief Return the optional template keyword and arguments info. 2414e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara ASTTemplateKWAndArgsInfo *getTemplateKWAndArgsInfo() { 2415e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara if (!HasTemplateKWAndArgsInfo) 2416e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara return 0; 2417e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara 2418e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara if (!HasQualifierOrFoundDecl) 2419e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara return reinterpret_cast<ASTTemplateKWAndArgsInfo *>(this + 1); 2420e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara 2421e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara return reinterpret_cast<ASTTemplateKWAndArgsInfo *>( 2422e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara getMemberQualifier() + 1); 2423e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara } 2424e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara 2425e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara /// \brief Return the optional template keyword and arguments info. 2426e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara const ASTTemplateKWAndArgsInfo *getTemplateKWAndArgsInfo() const { 2427e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara return const_cast<MemberExpr*>(this)->getTemplateKWAndArgsInfo(); 2428e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara } 2429e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara 2430e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara /// \brief Retrieve the location of the template keyword preceding 2431e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara /// the member name, if any. 2432e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara SourceLocation getTemplateKeywordLoc() const { 2433e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara if (!HasTemplateKWAndArgsInfo) return SourceLocation(); 2434e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara return getTemplateKWAndArgsInfo()->getTemplateKeywordLoc(); 2435e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara } 2436e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara 2437e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara /// \brief Retrieve the location of the left angle bracket starting the 2438e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara /// explicit template argument list following the member name, if any. 2439e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara SourceLocation getLAngleLoc() const { 2440e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara if (!HasTemplateKWAndArgsInfo) return SourceLocation(); 2441e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara return getTemplateKWAndArgsInfo()->LAngleLoc; 2442e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara } 2443e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara 2444e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara /// \brief Retrieve the location of the right angle bracket ending the 2445e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara /// explicit template argument list following the member name, if any. 2446e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara SourceLocation getRAngleLoc() const { 2447e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara if (!HasTemplateKWAndArgsInfo) return SourceLocation(); 2448e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara return getTemplateKWAndArgsInfo()->RAngleLoc; 2449c4bf26fbdff42967d660f505a83f75a4df2cc752Douglas Gregor } 24501eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2451e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara /// Determines whether the member name was preceded by the template keyword. 2452e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara bool hasTemplateKeyword() const { return getTemplateKeywordLoc().isValid(); } 2453e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara 2454e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara /// \brief Determines whether the member name was followed by an 2455e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara /// explicit template argument list. 2456e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara bool hasExplicitTemplateArgs() const { return getLAngleLoc().isValid(); } 2457e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara 2458d5532b6cfff2977e0c59fa6ead7f7973984a620dJohn McCall /// \brief Copies the template arguments (if present) into the given 2459d5532b6cfff2977e0c59fa6ead7f7973984a620dJohn McCall /// structure. 2460d5532b6cfff2977e0c59fa6ead7f7973984a620dJohn McCall void copyTemplateArgumentsInto(TemplateArgumentListInfo &List) const { 2461096832c5ed5b9106fa177ebc148489760c3bc496John McCall if (hasExplicitTemplateArgs()) 2462096832c5ed5b9106fa177ebc148489760c3bc496John McCall getExplicitTemplateArgs().copyInto(List); 2463096832c5ed5b9106fa177ebc148489760c3bc496John McCall } 2464096832c5ed5b9106fa177ebc148489760c3bc496John McCall 2465096832c5ed5b9106fa177ebc148489760c3bc496John McCall /// \brief Retrieve the explicit template argument list that 2466096832c5ed5b9106fa177ebc148489760c3bc496John McCall /// follow the member template name. This must only be called on an 2467096832c5ed5b9106fa177ebc148489760c3bc496John McCall /// expression with explicit template arguments. 2468b0c3e0909bb04af0bfb82ad01ab6909649d68ccaArgyrios Kyrtzidis ASTTemplateArgumentListInfo &getExplicitTemplateArgs() { 2469e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara assert(hasExplicitTemplateArgs()); 2470e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara return *getTemplateKWAndArgsInfo(); 2471096832c5ed5b9106fa177ebc148489760c3bc496John McCall } 2472096832c5ed5b9106fa177ebc148489760c3bc496John McCall 2473096832c5ed5b9106fa177ebc148489760c3bc496John McCall /// \brief Retrieve the explicit template argument list that 2474096832c5ed5b9106fa177ebc148489760c3bc496John McCall /// followed the member template name. This must only be called on 2475096832c5ed5b9106fa177ebc148489760c3bc496John McCall /// an expression with explicit template arguments. 2476b0c3e0909bb04af0bfb82ad01ab6909649d68ccaArgyrios Kyrtzidis const ASTTemplateArgumentListInfo &getExplicitTemplateArgs() const { 2477096832c5ed5b9106fa177ebc148489760c3bc496John McCall return const_cast<MemberExpr *>(this)->getExplicitTemplateArgs(); 2478096832c5ed5b9106fa177ebc148489760c3bc496John McCall } 2479096832c5ed5b9106fa177ebc148489760c3bc496John McCall 2480096832c5ed5b9106fa177ebc148489760c3bc496John McCall /// \brief Retrieves the optional explicit template arguments. 2481096832c5ed5b9106fa177ebc148489760c3bc496John McCall /// This points to the same data as getExplicitTemplateArgs(), but 2482096832c5ed5b9106fa177ebc148489760c3bc496John McCall /// returns null if there are no explicit template arguments. 2483b0c3e0909bb04af0bfb82ad01ab6909649d68ccaArgyrios Kyrtzidis const ASTTemplateArgumentListInfo *getOptionalExplicitTemplateArgs() const { 2484096832c5ed5b9106fa177ebc148489760c3bc496John McCall if (!hasExplicitTemplateArgs()) return 0; 2485096832c5ed5b9106fa177ebc148489760c3bc496John McCall return &getExplicitTemplateArgs(); 2486d5532b6cfff2977e0c59fa6ead7f7973984a620dJohn McCall } 2487ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 2488c4bf26fbdff42967d660f505a83f75a4df2cc752Douglas Gregor /// \brief Retrieve the template arguments provided as part of this 2489c4bf26fbdff42967d660f505a83f75a4df2cc752Douglas Gregor /// template-id. 2490833ca991c1bfc967f0995974ca86f66ba1f666b5John McCall const TemplateArgumentLoc *getTemplateArgs() const { 2491e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara if (!hasExplicitTemplateArgs()) 24921eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return 0; 24931eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2494096832c5ed5b9106fa177ebc148489760c3bc496John McCall return getExplicitTemplateArgs().getTemplateArgs(); 2495c4bf26fbdff42967d660f505a83f75a4df2cc752Douglas Gregor } 24961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2497c4bf26fbdff42967d660f505a83f75a4df2cc752Douglas Gregor /// \brief Retrieve the number of template arguments provided as part of this 2498c4bf26fbdff42967d660f505a83f75a4df2cc752Douglas Gregor /// template-id. 24991eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump unsigned getNumTemplateArgs() const { 2500e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara if (!hasExplicitTemplateArgs()) 25011eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return 0; 25021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2503096832c5ed5b9106fa177ebc148489760c3bc496John McCall return getExplicitTemplateArgs().NumTemplateArgs; 2504c4bf26fbdff42967d660f505a83f75a4df2cc752Douglas Gregor } 25051eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 25062577743c5650c646fb705df01403707e94f2df04Abramo Bagnara /// \brief Retrieve the member declaration name info. 25072577743c5650c646fb705df01403707e94f2df04Abramo Bagnara DeclarationNameInfo getMemberNameInfo() const { 25082577743c5650c646fb705df01403707e94f2df04Abramo Bagnara return DeclarationNameInfo(MemberDecl->getDeclName(), 25092577743c5650c646fb705df01403707e94f2df04Abramo Bagnara MemberLoc, MemberDNLoc); 25102577743c5650c646fb705df01403707e94f2df04Abramo Bagnara } 25112577743c5650c646fb705df01403707e94f2df04Abramo Bagnara 25125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool isArrow() const { return IsArrow; } 25131f0d0133b0e8d1f01f63951ee04927796b34740dDouglas Gregor void setArrow(bool A) { IsArrow = A; } 25141f0d0133b0e8d1f01f63951ee04927796b34740dDouglas Gregor 2515ddca44e86281bb7dcf5fdcaf1563434c524e3861Chris Lattner /// getMemberLoc - Return the location of the "member", in X->F, it is the 2516ddca44e86281bb7dcf5fdcaf1563434c524e3861Chris Lattner /// location of 'F'. 2517026dc96ac6ece60da5e1b98e2a71bd0ff0939fd8Chris Lattner SourceLocation getMemberLoc() const { return MemberLoc; } 25181f0d0133b0e8d1f01f63951ee04927796b34740dDouglas Gregor void setMemberLoc(SourceLocation L) { MemberLoc = L; } 25195f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2520aa49a7d70e58dac2aeb40664ba16d2ea571b8c95Daniel Dunbar SourceLocation getLocStart() const LLVM_READONLY; 2521aa49a7d70e58dac2aeb40664ba16d2ea571b8c95Daniel Dunbar SourceLocation getLocEnd() const LLVM_READONLY; 2522ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 25234f311183be3d923da9fbe8702c453688b4c426a9Daniel Dunbar SourceLocation getExprLoc() const LLVM_READONLY { return MemberLoc; } 25245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 252575e85048e73fcde2ce9d8a48dfdb1220e132eb59Douglas Gregor /// \brief Determine whether the base of this explicit is implicit. 252675e85048e73fcde2ce9d8a48dfdb1220e132eb59Douglas Gregor bool isImplicitAccess() const { 252775e85048e73fcde2ce9d8a48dfdb1220e132eb59Douglas Gregor return getBase() && getBase()->isImplicitCXXThis(); 252875e85048e73fcde2ce9d8a48dfdb1220e132eb59Douglas Gregor } 25297cc58b4c927fca539d43eaa58e00dca95946eb7cAbramo Bagnara 25307cc58b4c927fca539d43eaa58e00dca95946eb7cAbramo Bagnara /// \brief Returns true if this member expression refers to a method that 25317cc58b4c927fca539d43eaa58e00dca95946eb7cAbramo Bagnara /// was resolved from an overloaded set having size greater than 1. 25327cc58b4c927fca539d43eaa58e00dca95946eb7cAbramo Bagnara bool hadMultipleCandidates() const { 25337cc58b4c927fca539d43eaa58e00dca95946eb7cAbramo Bagnara return HadMultipleCandidates; 25347cc58b4c927fca539d43eaa58e00dca95946eb7cAbramo Bagnara } 25357cc58b4c927fca539d43eaa58e00dca95946eb7cAbramo Bagnara /// \brief Sets the flag telling whether this expression refers to 25367cc58b4c927fca539d43eaa58e00dca95946eb7cAbramo Bagnara /// a method that was resolved from an overloaded set having size 25377cc58b4c927fca539d43eaa58e00dca95946eb7cAbramo Bagnara /// greater than 1. 25387cc58b4c927fca539d43eaa58e00dca95946eb7cAbramo Bagnara void setHadMultipleCandidates(bool V = true) { 25397cc58b4c927fca539d43eaa58e00dca95946eb7cAbramo Bagnara HadMultipleCandidates = V; 25407cc58b4c927fca539d43eaa58e00dca95946eb7cAbramo Bagnara } 25417cc58b4c927fca539d43eaa58e00dca95946eb7cAbramo Bagnara 25421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump static bool classof(const Stmt *T) { 254383f6faf37d9bf58986bedc9bc0ea897a56b4dbadDouglas Gregor return T->getStmtClass() == MemberExprClass; 25445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 25451eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 25461237c673c07f9d827129ba02720108816abde562Ted Kremenek // Iterators 254763c00d7f35fa060c0a446c9df3a4402d9c7757feJohn McCall child_range children() { return child_range(&Base, &Base+1); } 25484045107b7384fd68eed5e3e2f06fc2a47e7be0a6Argyrios Kyrtzidis 25494045107b7384fd68eed5e3e2f06fc2a47e7be0a6Argyrios Kyrtzidis friend class ASTReader; 25504045107b7384fd68eed5e3e2f06fc2a47e7be0a6Argyrios Kyrtzidis friend class ASTStmtWriter; 25515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer}; 25525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 25531eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// CompoundLiteralExpr - [C99 6.5.2.5] 2554aff1edd84aaafef15b737acd8ec61abcca6d6bc3Steve Naroff/// 2555aff1edd84aaafef15b737acd8ec61abcca6d6bc3Steve Naroffclass CompoundLiteralExpr : public Expr { 25560fc53dfc7a33f68e71ef245389c4e7cd34a62a39Chris Lattner /// LParenLoc - If non-null, this is the location of the left paren in a 25570fc53dfc7a33f68e71ef245389c4e7cd34a62a39Chris Lattner /// compound literal like "(int){4}". This can be null if this is a 25580fc53dfc7a33f68e71ef245389c4e7cd34a62a39Chris Lattner /// synthesized compound expression. 25590fc53dfc7a33f68e71ef245389c4e7cd34a62a39Chris Lattner SourceLocation LParenLoc; 25601d7d8d66eff7ed0f3e957d330930cc9ab8047addJohn McCall 25611d7d8d66eff7ed0f3e957d330930cc9ab8047addJohn McCall /// The type as written. This can be an incomplete array type, in 25621d7d8d66eff7ed0f3e957d330930cc9ab8047addJohn McCall /// which case the actual expression type will be different. 25633654c6993697a30af0c5a472963fe8c03e622b98Benjamin Kramer /// The int part of the pair stores whether this expr is file scope. 25643654c6993697a30af0c5a472963fe8c03e622b98Benjamin Kramer llvm::PointerIntPair<TypeSourceInfo *, 1, bool> TInfoAndScope; 25655549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek Stmt *Init; 2566aff1edd84aaafef15b737acd8ec61abcca6d6bc3Steve Naroffpublic: 256742f56b50062cd3b3c6b23fdb9053578ae9145664John McCall CompoundLiteralExpr(SourceLocation lparenloc, TypeSourceInfo *tinfo, 2568f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall QualType T, ExprValueKind VK, Expr *init, bool fileScope) 2569f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall : Expr(CompoundLiteralExprClass, T, VK, OK_Ordinary, 2570ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie tinfo->getType()->isDependentType(), 2571bebbe0d9b7568ce43a464286bee49429489ef483Douglas Gregor init->isValueDependent(), 2572561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor (init->isInstantiationDependent() || 2573561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor tinfo->getType()->isInstantiationDependentType()), 2574bebbe0d9b7568ce43a464286bee49429489ef483Douglas Gregor init->containsUnexpandedParameterPack()), 25753654c6993697a30af0c5a472963fe8c03e622b98Benjamin Kramer LParenLoc(lparenloc), TInfoAndScope(tinfo, fileScope), Init(init) {} 25761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2577ba6d7e7fa5f79959d3eef39adb5620d845ba5198Douglas Gregor /// \brief Construct an empty compound literal. 2578ba6d7e7fa5f79959d3eef39adb5620d845ba5198Douglas Gregor explicit CompoundLiteralExpr(EmptyShell Empty) 2579ba6d7e7fa5f79959d3eef39adb5620d845ba5198Douglas Gregor : Expr(CompoundLiteralExprClass, Empty) { } 2580ba6d7e7fa5f79959d3eef39adb5620d845ba5198Douglas Gregor 25815549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek const Expr *getInitializer() const { return cast<Expr>(Init); } 25825549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek Expr *getInitializer() { return cast<Expr>(Init); } 2583ba6d7e7fa5f79959d3eef39adb5620d845ba5198Douglas Gregor void setInitializer(Expr *E) { Init = E; } 2584e9b12198c4cc7f5687960100351b4af006c14469Steve Naroff 25853654c6993697a30af0c5a472963fe8c03e622b98Benjamin Kramer bool isFileScope() const { return TInfoAndScope.getInt(); } 25863654c6993697a30af0c5a472963fe8c03e622b98Benjamin Kramer void setFileScope(bool FS) { TInfoAndScope.setInt(FS); } 2587ba6d7e7fa5f79959d3eef39adb5620d845ba5198Douglas Gregor 25880fc53dfc7a33f68e71ef245389c4e7cd34a62a39Chris Lattner SourceLocation getLParenLoc() const { return LParenLoc; } 2589ba6d7e7fa5f79959d3eef39adb5620d845ba5198Douglas Gregor void setLParenLoc(SourceLocation L) { LParenLoc = L; } 2590ba6d7e7fa5f79959d3eef39adb5620d845ba5198Douglas Gregor 25913654c6993697a30af0c5a472963fe8c03e622b98Benjamin Kramer TypeSourceInfo *getTypeSourceInfo() const { 25923654c6993697a30af0c5a472963fe8c03e622b98Benjamin Kramer return TInfoAndScope.getPointer(); 25933654c6993697a30af0c5a472963fe8c03e622b98Benjamin Kramer } 25943654c6993697a30af0c5a472963fe8c03e622b98Benjamin Kramer void setTypeSourceInfo(TypeSourceInfo *tinfo) { 25953654c6993697a30af0c5a472963fe8c03e622b98Benjamin Kramer TInfoAndScope.setPointer(tinfo); 25963654c6993697a30af0c5a472963fe8c03e622b98Benjamin Kramer } 259742f56b50062cd3b3c6b23fdb9053578ae9145664John McCall 259865d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocStart() const LLVM_READONLY { 25990fc53dfc7a33f68e71ef245389c4e7cd34a62a39Chris Lattner // FIXME: Init should never be null. 26000fc53dfc7a33f68e71ef245389c4e7cd34a62a39Chris Lattner if (!Init) 260165d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen return SourceLocation(); 26020fc53dfc7a33f68e71ef245389c4e7cd34a62a39Chris Lattner if (LParenLoc.isInvalid()) 260365d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen return Init->getLocStart(); 260465d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen return LParenLoc; 260565d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen } 260665d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocEnd() const LLVM_READONLY { 260765d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen // FIXME: Init should never be null. 260865d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen if (!Init) 260965d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen return SourceLocation(); 261065d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen return Init->getLocEnd(); 261173d0d4fac161ed12926e010dcf8b448a8de6a2ecChris Lattner } 2612aff1edd84aaafef15b737acd8ec61abcca6d6bc3Steve Naroff 26131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump static bool classof(const Stmt *T) { 26141eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return T->getStmtClass() == CompoundLiteralExprClass; 2615aff1edd84aaafef15b737acd8ec61abcca6d6bc3Steve Naroff } 26161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 26171237c673c07f9d827129ba02720108816abde562Ted Kremenek // Iterators 261863c00d7f35fa060c0a446c9df3a4402d9c7757feJohn McCall child_range children() { return child_range(&Init, &Init+1); } 2619aff1edd84aaafef15b737acd8ec61abcca6d6bc3Steve Naroff}; 2620aff1edd84aaafef15b737acd8ec61abcca6d6bc3Steve Naroff 262149badde06e066d058d6c7fcf4e628a72999b65a9Douglas Gregor/// CastExpr - Base class for type casts, including both implicit 262249badde06e066d058d6c7fcf4e628a72999b65a9Douglas Gregor/// casts (ImplicitCastExpr) and explicit casts that have some 262349badde06e066d058d6c7fcf4e628a72999b65a9Douglas Gregor/// representation in the source code (ExplicitCastExpr's derived 262449badde06e066d058d6c7fcf4e628a72999b65a9Douglas Gregor/// classes). 26250835a3cdeefe714b4959d31127ea155e56393125Argyrios Kyrtzidisclass CastExpr : public Expr { 2626cdef2b75aa60cde1ca00e0aa3f89139ac89c6ae4Anders Carlssonpublic: 26275baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall typedef clang::CastKind CastKind; 26281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2629cdef2b75aa60cde1ca00e0aa3f89139ac89c6ae4Anders Carlssonprivate: 26300835a3cdeefe714b4959d31127ea155e56393125Argyrios Kyrtzidis Stmt *Op; 2631409c99edb8b623403fade6f3a9e9c86acda74455Anders Carlsson 26321d9b3b25f7ac0d0195bba6b507a684fe5e7943eeJohn McCall void CheckCastConsistency() const; 2633409c99edb8b623403fade6f3a9e9c86acda74455Anders Carlsson 2634f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall const CXXBaseSpecifier * const *path_buffer() const { 2635f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall return const_cast<CastExpr*>(this)->path_buffer(); 2636f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall } 2637f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall CXXBaseSpecifier **path_buffer(); 2638f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall 2639654f6b2b53af2c950c62ef0161fa021648accbcbArgyrios Kyrtzidis void setBasePathSize(unsigned basePathSize) { 2640654f6b2b53af2c950c62ef0161fa021648accbcbArgyrios Kyrtzidis CastExprBits.BasePathSize = basePathSize; 2641654f6b2b53af2c950c62ef0161fa021648accbcbArgyrios Kyrtzidis assert(CastExprBits.BasePathSize == basePathSize && 2642654f6b2b53af2c950c62ef0161fa021648accbcbArgyrios Kyrtzidis "basePathSize doesn't fit in bits of CastExprBits.BasePathSize!"); 2643654f6b2b53af2c950c62ef0161fa021648accbcbArgyrios Kyrtzidis } 2644654f6b2b53af2c950c62ef0161fa021648accbcbArgyrios Kyrtzidis 26450835a3cdeefe714b4959d31127ea155e56393125Argyrios Kyrtzidisprotected: 2646f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall CastExpr(StmtClass SC, QualType ty, ExprValueKind VK, 2647f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall const CastKind kind, Expr *op, unsigned BasePathSize) : 2648f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall Expr(SC, ty, VK, OK_Ordinary, 2649898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor // Cast expressions are type-dependent if the type is 2650898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor // dependent (C++ [temp.dep.expr]p3). 2651898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor ty->isDependentType(), 2652898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor // Cast expressions are value-dependent if the type is 2653898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor // dependent or if the subexpression is value-dependent. 2654bebbe0d9b7568ce43a464286bee49429489ef483Douglas Gregor ty->isDependentType() || (op && op->isValueDependent()), 2655ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie (ty->isInstantiationDependentType() || 2656561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor (op && op->isInstantiationDependent())), 2657bebbe0d9b7568ce43a464286bee49429489ef483Douglas Gregor (ty->containsUnexpandedParameterPack() || 2658a2338bc4c2887937478d302901fb41a53e14e6d6Anna Zaks (op && op->containsUnexpandedParameterPack()))), 26598e6285af719adc6f86d6faa235d22a08eb68ee3aJohn McCall Op(op) { 2660daa8e4e888758d55a7a759dd4a91b83921cef222John McCall assert(kind != CK_Invalid && "creating cast with invalid cast kind"); 26618e6285af719adc6f86d6faa235d22a08eb68ee3aJohn McCall CastExprBits.Kind = kind; 2662654f6b2b53af2c950c62ef0161fa021648accbcbArgyrios Kyrtzidis setBasePathSize(BasePathSize); 26631d9b3b25f7ac0d0195bba6b507a684fe5e7943eeJohn McCall#ifndef NDEBUG 2664daa8e4e888758d55a7a759dd4a91b83921cef222John McCall CheckCastConsistency(); 26651d9b3b25f7ac0d0195bba6b507a684fe5e7943eeJohn McCall#endif 2666f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall } 26671eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2668087fd536809ebe754d91c641a98917e02dd7452dDouglas Gregor /// \brief Construct an empty cast. 2669f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall CastExpr(StmtClass SC, EmptyShell Empty, unsigned BasePathSize) 26708e6285af719adc6f86d6faa235d22a08eb68ee3aJohn McCall : Expr(SC, Empty) { 2671654f6b2b53af2c950c62ef0161fa021648accbcbArgyrios Kyrtzidis setBasePathSize(BasePathSize); 26728e6285af719adc6f86d6faa235d22a08eb68ee3aJohn McCall } 26731eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 26740835a3cdeefe714b4959d31127ea155e56393125Argyrios Kyrtzidispublic: 26758e6285af719adc6f86d6faa235d22a08eb68ee3aJohn McCall CastKind getCastKind() const { return (CastKind) CastExprBits.Kind; } 26768e6285af719adc6f86d6faa235d22a08eb68ee3aJohn McCall void setCastKind(CastKind K) { CastExprBits.Kind = K; } 2677f8ec55a104e55961f8666f773dce99bbc628298fAnders Carlsson const char *getCastKindName() const; 2678f8ec55a104e55961f8666f773dce99bbc628298fAnders Carlsson 26790835a3cdeefe714b4959d31127ea155e56393125Argyrios Kyrtzidis Expr *getSubExpr() { return cast<Expr>(Op); } 26800835a3cdeefe714b4959d31127ea155e56393125Argyrios Kyrtzidis const Expr *getSubExpr() const { return cast<Expr>(Op); } 2681087fd536809ebe754d91c641a98917e02dd7452dDouglas Gregor void setSubExpr(Expr *E) { Op = E; } 2682087fd536809ebe754d91c641a98917e02dd7452dDouglas Gregor 26836eef519fc8a97bb7ca6066f23d35e10f06b2c1b5Douglas Gregor /// \brief Retrieve the cast subexpression as it was written in the source 26846eef519fc8a97bb7ca6066f23d35e10f06b2c1b5Douglas Gregor /// code, looking through any implicit casts or other intermediate nodes 26856eef519fc8a97bb7ca6066f23d35e10f06b2c1b5Douglas Gregor /// introduced by semantic analysis. 26866eef519fc8a97bb7ca6066f23d35e10f06b2c1b5Douglas Gregor Expr *getSubExprAsWritten(); 26876eef519fc8a97bb7ca6066f23d35e10f06b2c1b5Douglas Gregor const Expr *getSubExprAsWritten() const { 26886eef519fc8a97bb7ca6066f23d35e10f06b2c1b5Douglas Gregor return const_cast<CastExpr *>(this)->getSubExprAsWritten(); 26896eef519fc8a97bb7ca6066f23d35e10f06b2c1b5Douglas Gregor } 269041b2dcd465f1e438502c420effc9d0c747f9db8fAnders Carlsson 2691f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall typedef CXXBaseSpecifier **path_iterator; 2692f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall typedef const CXXBaseSpecifier * const *path_const_iterator; 26938e6285af719adc6f86d6faa235d22a08eb68ee3aJohn McCall bool path_empty() const { return CastExprBits.BasePathSize == 0; } 26948e6285af719adc6f86d6faa235d22a08eb68ee3aJohn McCall unsigned path_size() const { return CastExprBits.BasePathSize; } 2695f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall path_iterator path_begin() { return path_buffer(); } 2696f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall path_iterator path_end() { return path_buffer() + path_size(); } 2697f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall path_const_iterator path_begin() const { return path_buffer(); } 2698f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall path_const_iterator path_end() const { return path_buffer() + path_size(); } 2699f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall 2700f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall void setCastPath(const CXXCastPath &Path); 270141b2dcd465f1e438502c420effc9d0c747f9db8fAnders Carlsson 27021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump static bool classof(const Stmt *T) { 27034bfe1968410ea8ffe3b4f629addd7c4bcf484765Sean Hunt return T->getStmtClass() >= firstCastExprConstant && 27044bfe1968410ea8ffe3b4f629addd7c4bcf484765Sean Hunt T->getStmtClass() <= lastCastExprConstant; 27050835a3cdeefe714b4959d31127ea155e56393125Argyrios Kyrtzidis } 27061eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 27070835a3cdeefe714b4959d31127ea155e56393125Argyrios Kyrtzidis // Iterators 270863c00d7f35fa060c0a446c9df3a4402d9c7757feJohn McCall child_range children() { return child_range(&Op, &Op+1); } 27090835a3cdeefe714b4959d31127ea155e56393125Argyrios Kyrtzidis}; 27100835a3cdeefe714b4959d31127ea155e56393125Argyrios Kyrtzidis 271149badde06e066d058d6c7fcf4e628a72999b65a9Douglas Gregor/// ImplicitCastExpr - Allows us to explicitly represent implicit type 271249badde06e066d058d6c7fcf4e628a72999b65a9Douglas Gregor/// conversions, which have no direct representation in the original 271349badde06e066d058d6c7fcf4e628a72999b65a9Douglas Gregor/// source code. For example: converting T[]->T*, void f()->void 271449badde06e066d058d6c7fcf4e628a72999b65a9Douglas Gregor/// (*f)(), float->double, short->int, etc. 271549b4526992a8c8a6a290aa3efa9828154a24af8dSteve Naroff/// 2716bf3af056289893f58d37b05a2c80970708781d61Douglas Gregor/// In C, implicit casts always produce rvalues. However, in C++, an 2717bf3af056289893f58d37b05a2c80970708781d61Douglas Gregor/// implicit cast whose result is being bound to a reference will be 2718906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl/// an lvalue or xvalue. For example: 2719bf3af056289893f58d37b05a2c80970708781d61Douglas Gregor/// 2720bf3af056289893f58d37b05a2c80970708781d61Douglas Gregor/// @code 2721bf3af056289893f58d37b05a2c80970708781d61Douglas Gregor/// class Base { }; 2722bf3af056289893f58d37b05a2c80970708781d61Douglas Gregor/// class Derived : public Base { }; 2723906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl/// Derived &&ref(); 27241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// void f(Derived d) { 2725906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl/// Base& b = d; // initializer is an ImplicitCastExpr 2726906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl/// // to an lvalue of type Base 2727906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl/// Base&& r = ref(); // initializer is an ImplicitCastExpr 2728906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl/// // to an xvalue of type Base 2729bf3af056289893f58d37b05a2c80970708781d61Douglas Gregor/// } 2730bf3af056289893f58d37b05a2c80970708781d61Douglas Gregor/// @endcode 27310835a3cdeefe714b4959d31127ea155e56393125Argyrios Kyrtzidisclass ImplicitCastExpr : public CastExpr { 2732906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redlprivate: 2733f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall ImplicitCastExpr(QualType ty, CastKind kind, Expr *op, 27345baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall unsigned BasePathLength, ExprValueKind VK) 2735f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall : CastExpr(ImplicitCastExprClass, ty, VK, kind, op, BasePathLength) { 27365baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall } 273790045e8ebabf50d6f1b3a67081a621b20b5e5341Steve Naroff 2738087fd536809ebe754d91c641a98917e02dd7452dDouglas Gregor /// \brief Construct an empty implicit cast. 2739f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall explicit ImplicitCastExpr(EmptyShell Shell, unsigned PathSize) 2740f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall : CastExpr(ImplicitCastExprClass, Shell, PathSize) { } 2741f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall 2742f871d0cc377a1367b519a6cce26be74607566ebaJohn McCallpublic: 2743f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall enum OnStack_t { OnStack }; 2744f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall ImplicitCastExpr(OnStack_t _, QualType ty, CastKind kind, Expr *op, 27455baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall ExprValueKind VK) 2746f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall : CastExpr(ImplicitCastExprClass, ty, VK, kind, op, 0) { 27475baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall } 2748f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall 2749f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall static ImplicitCastExpr *Create(ASTContext &Context, QualType T, 2750f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall CastKind Kind, Expr *Operand, 2751f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall const CXXCastPath *BasePath, 27525baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall ExprValueKind Cat); 2753f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall 2754f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall static ImplicitCastExpr *CreateEmpty(ASTContext &Context, unsigned PathSize); 2755087fd536809ebe754d91c641a98917e02dd7452dDouglas Gregor 2756aa49a7d70e58dac2aeb40664ba16d2ea571b8c95Daniel Dunbar SourceLocation getLocStart() const LLVM_READONLY { 2757396ec676b7a39665fa3a3f86f8e0520f8d7e93a8Daniel Dunbar return getSubExpr()->getLocStart(); 2758396ec676b7a39665fa3a3f86f8e0520f8d7e93a8Daniel Dunbar } 2759aa49a7d70e58dac2aeb40664ba16d2ea571b8c95Daniel Dunbar SourceLocation getLocEnd() const LLVM_READONLY { 2760396ec676b7a39665fa3a3f86f8e0520f8d7e93a8Daniel Dunbar return getSubExpr()->getLocEnd(); 2761396ec676b7a39665fa3a3f86f8e0520f8d7e93a8Daniel Dunbar } 276290045e8ebabf50d6f1b3a67081a621b20b5e5341Steve Naroff 27631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump static bool classof(const Stmt *T) { 27641eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return T->getStmtClass() == ImplicitCastExprClass; 276549b4526992a8c8a6a290aa3efa9828154a24af8dSteve Naroff } 276649b4526992a8c8a6a290aa3efa9828154a24af8dSteve Naroff}; 276749b4526992a8c8a6a290aa3efa9828154a24af8dSteve Naroff 276891a5755ad73c5dc1dfb167e448fdd74e75a6df56John McCallinline Expr *Expr::IgnoreImpCasts() { 276991a5755ad73c5dc1dfb167e448fdd74e75a6df56John McCall Expr *e = this; 277091a5755ad73c5dc1dfb167e448fdd74e75a6df56John McCall while (ImplicitCastExpr *ice = dyn_cast<ImplicitCastExpr>(e)) 277191a5755ad73c5dc1dfb167e448fdd74e75a6df56John McCall e = ice->getSubExpr(); 277291a5755ad73c5dc1dfb167e448fdd74e75a6df56John McCall return e; 277391a5755ad73c5dc1dfb167e448fdd74e75a6df56John McCall} 277491a5755ad73c5dc1dfb167e448fdd74e75a6df56John McCall 277549badde06e066d058d6c7fcf4e628a72999b65a9Douglas Gregor/// ExplicitCastExpr - An explicit cast written in the source 27761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// code. 277749badde06e066d058d6c7fcf4e628a72999b65a9Douglas Gregor/// 277849badde06e066d058d6c7fcf4e628a72999b65a9Douglas Gregor/// This class is effectively an abstract class, because it provides 277949badde06e066d058d6c7fcf4e628a72999b65a9Douglas Gregor/// the basic representation of an explicitly-written cast without 278049badde06e066d058d6c7fcf4e628a72999b65a9Douglas Gregor/// specifying which kind of cast (C cast, functional cast, static 278149badde06e066d058d6c7fcf4e628a72999b65a9Douglas Gregor/// cast, etc.) was written; specific derived classes represent the 278249badde06e066d058d6c7fcf4e628a72999b65a9Douglas Gregor/// particular style of cast and its location information. 27835f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 278449badde06e066d058d6c7fcf4e628a72999b65a9Douglas Gregor/// Unlike implicit casts, explicit cast nodes have two different 278549badde06e066d058d6c7fcf4e628a72999b65a9Douglas Gregor/// types: the type that was written into the source code, and the 278649badde06e066d058d6c7fcf4e628a72999b65a9Douglas Gregor/// actual type of the expression as determined by semantic 278749badde06e066d058d6c7fcf4e628a72999b65a9Douglas Gregor/// analysis. These types may differ slightly. For example, in C++ one 278849badde06e066d058d6c7fcf4e628a72999b65a9Douglas Gregor/// can cast to a reference type, which indicates that the resulting 2789906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl/// expression will be an lvalue or xvalue. The reference type, however, 2790906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl/// will not be used as the type of the expression. 27910835a3cdeefe714b4959d31127ea155e56393125Argyrios Kyrtzidisclass ExplicitCastExpr : public CastExpr { 27929d125033a9853f3b572a4c9e2f9e2d4e5e346973John McCall /// TInfo - Source type info for the (written) type 27939d125033a9853f3b572a4c9e2f9e2d4e5e346973John McCall /// this expression is casting to. 27949d125033a9853f3b572a4c9e2f9e2d4e5e346973John McCall TypeSourceInfo *TInfo; 279549badde06e066d058d6c7fcf4e628a72999b65a9Douglas Gregor 279649badde06e066d058d6c7fcf4e628a72999b65a9Douglas Gregorprotected: 2797f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall ExplicitCastExpr(StmtClass SC, QualType exprTy, ExprValueKind VK, 2798f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall CastKind kind, Expr *op, unsigned PathSize, 2799f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall TypeSourceInfo *writtenTy) 2800f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall : CastExpr(SC, exprTy, VK, kind, op, PathSize), TInfo(writtenTy) {} 280149badde06e066d058d6c7fcf4e628a72999b65a9Douglas Gregor 2802db600c330a37b1c3ab4533310729910ee188f900Douglas Gregor /// \brief Construct an empty explicit cast. 2803f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall ExplicitCastExpr(StmtClass SC, EmptyShell Shell, unsigned PathSize) 2804f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall : CastExpr(SC, Shell, PathSize) { } 2805db600c330a37b1c3ab4533310729910ee188f900Douglas Gregor 280649badde06e066d058d6c7fcf4e628a72999b65a9Douglas Gregorpublic: 28079d125033a9853f3b572a4c9e2f9e2d4e5e346973John McCall /// getTypeInfoAsWritten - Returns the type source info for the type 28089d125033a9853f3b572a4c9e2f9e2d4e5e346973John McCall /// that this expression is casting to. 28099d125033a9853f3b572a4c9e2f9e2d4e5e346973John McCall TypeSourceInfo *getTypeInfoAsWritten() const { return TInfo; } 28109d125033a9853f3b572a4c9e2f9e2d4e5e346973John McCall void setTypeInfoAsWritten(TypeSourceInfo *writtenTy) { TInfo = writtenTy; } 28119d125033a9853f3b572a4c9e2f9e2d4e5e346973John McCall 281249badde06e066d058d6c7fcf4e628a72999b65a9Douglas Gregor /// getTypeAsWritten - Returns the type that this expression is 281349badde06e066d058d6c7fcf4e628a72999b65a9Douglas Gregor /// casting to, as written in the source code. 28149d125033a9853f3b572a4c9e2f9e2d4e5e346973John McCall QualType getTypeAsWritten() const { return TInfo->getType(); } 281549badde06e066d058d6c7fcf4e628a72999b65a9Douglas Gregor 28161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump static bool classof(const Stmt *T) { 28174bfe1968410ea8ffe3b4f629addd7c4bcf484765Sean Hunt return T->getStmtClass() >= firstExplicitCastExprConstant && 28184bfe1968410ea8ffe3b4f629addd7c4bcf484765Sean Hunt T->getStmtClass() <= lastExplicitCastExprConstant; 281949badde06e066d058d6c7fcf4e628a72999b65a9Douglas Gregor } 282049badde06e066d058d6c7fcf4e628a72999b65a9Douglas Gregor}; 282149badde06e066d058d6c7fcf4e628a72999b65a9Douglas Gregor 28226eec8e883de118b431e3ead5b1e604a6ac68ff6bDouglas Gregor/// CStyleCastExpr - An explicit cast in C (C99 6.5.4) or a C-style 282349badde06e066d058d6c7fcf4e628a72999b65a9Douglas Gregor/// cast in C++ (C++ [expr.cast]), which uses the syntax 282449badde06e066d058d6c7fcf4e628a72999b65a9Douglas Gregor/// (Type)expr. For example: @c (int)f. 28256eec8e883de118b431e3ead5b1e604a6ac68ff6bDouglas Gregorclass CStyleCastExpr : public ExplicitCastExpr { 2826b2f9e516327310d95840d442416084508f80c183Steve Naroff SourceLocation LPLoc; // the location of the left paren 2827b2f9e516327310d95840d442416084508f80c183Steve Naroff SourceLocation RPLoc; // the location of the right paren 2828f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall 2829f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall CStyleCastExpr(QualType exprTy, ExprValueKind vk, CastKind kind, Expr *op, 2830f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall unsigned PathSize, TypeSourceInfo *writtenTy, 283141b2dcd465f1e438502c420effc9d0c747f9db8fAnders Carlsson SourceLocation l, SourceLocation r) 2832f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall : ExplicitCastExpr(CStyleCastExprClass, exprTy, vk, kind, op, PathSize, 283341b2dcd465f1e438502c420effc9d0c747f9db8fAnders Carlsson writtenTy), LPLoc(l), RPLoc(r) {} 283449b4526992a8c8a6a290aa3efa9828154a24af8dSteve Naroff 2835db600c330a37b1c3ab4533310729910ee188f900Douglas Gregor /// \brief Construct an empty C-style explicit cast. 2836f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall explicit CStyleCastExpr(EmptyShell Shell, unsigned PathSize) 2837f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall : ExplicitCastExpr(CStyleCastExprClass, Shell, PathSize) { } 2838f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall 2839f871d0cc377a1367b519a6cce26be74607566ebaJohn McCallpublic: 2840f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall static CStyleCastExpr *Create(ASTContext &Context, QualType T, 2841f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall ExprValueKind VK, CastKind K, 2842f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall Expr *Op, const CXXCastPath *BasePath, 2843f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall TypeSourceInfo *WrittenTy, SourceLocation L, 2844f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall SourceLocation R); 2845f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall 2846f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall static CStyleCastExpr *CreateEmpty(ASTContext &Context, unsigned PathSize); 2847db600c330a37b1c3ab4533310729910ee188f900Douglas Gregor 2848b2f9e516327310d95840d442416084508f80c183Steve Naroff SourceLocation getLParenLoc() const { return LPLoc; } 2849db600c330a37b1c3ab4533310729910ee188f900Douglas Gregor void setLParenLoc(SourceLocation L) { LPLoc = L; } 2850db600c330a37b1c3ab4533310729910ee188f900Douglas Gregor 2851b2f9e516327310d95840d442416084508f80c183Steve Naroff SourceLocation getRParenLoc() const { return RPLoc; } 2852db600c330a37b1c3ab4533310729910ee188f900Douglas Gregor void setRParenLoc(SourceLocation L) { RPLoc = L; } 2853db600c330a37b1c3ab4533310729910ee188f900Douglas Gregor 285465d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocStart() const LLVM_READONLY { return LPLoc; } 285565d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocEnd() const LLVM_READONLY { 285665d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen return getSubExpr()->getLocEnd(); 28575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 285865d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen 28591eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump static bool classof(const Stmt *T) { 28601eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return T->getStmtClass() == CStyleCastExprClass; 28615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 28625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer}; 28635f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 28643fd95ce225393fe4a3623e429766a8c3f487ff9dDouglas Gregor/// \brief A builtin binary operation expression such as "x + y" or "x <= y". 28653fd95ce225393fe4a3623e429766a8c3f487ff9dDouglas Gregor/// 28663fd95ce225393fe4a3623e429766a8c3f487ff9dDouglas Gregor/// This expression node kind describes a builtin binary operation, 28673fd95ce225393fe4a3623e429766a8c3f487ff9dDouglas Gregor/// such as "x + y" for integer values "x" and "y". The operands will 28683fd95ce225393fe4a3623e429766a8c3f487ff9dDouglas Gregor/// already have been converted to appropriate types (e.g., by 28693fd95ce225393fe4a3623e429766a8c3f487ff9dDouglas Gregor/// performing promotions or conversions). 28703fd95ce225393fe4a3623e429766a8c3f487ff9dDouglas Gregor/// 28713fd95ce225393fe4a3623e429766a8c3f487ff9dDouglas Gregor/// In C++, where operators may be overloaded, a different kind of 28723fd95ce225393fe4a3623e429766a8c3f487ff9dDouglas Gregor/// expression node (CXXOperatorCallExpr) is used to express the 28733fd95ce225393fe4a3623e429766a8c3f487ff9dDouglas Gregor/// invocation of an overloaded operator with operator syntax. Within 28743fd95ce225393fe4a3623e429766a8c3f487ff9dDouglas Gregor/// a C++ template, whether BinaryOperator or CXXOperatorCallExpr is 28753fd95ce225393fe4a3623e429766a8c3f487ff9dDouglas Gregor/// used to store an expression "x + y" depends on the subexpressions 28763fd95ce225393fe4a3623e429766a8c3f487ff9dDouglas Gregor/// for x and y. If neither x or y is type-dependent, and the "+" 28773fd95ce225393fe4a3623e429766a8c3f487ff9dDouglas Gregor/// operator resolves to a built-in operation, BinaryOperator will be 28783fd95ce225393fe4a3623e429766a8c3f487ff9dDouglas Gregor/// used to express the computation (x and y may still be 28793fd95ce225393fe4a3623e429766a8c3f487ff9dDouglas Gregor/// value-dependent). If either x or y is type-dependent, or if the 28803fd95ce225393fe4a3623e429766a8c3f487ff9dDouglas Gregor/// "+" resolves to an overloaded operator, CXXOperatorCallExpr will 28813fd95ce225393fe4a3623e429766a8c3f487ff9dDouglas Gregor/// be used to express the computation. 28825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass BinaryOperator : public Expr { 28835f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerpublic: 28845baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall typedef BinaryOperatorKind Opcode; 28855baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall 288617d1b2ac9f8371a0a2e79d4f8e0008658164f080Chris Lattnerprivate: 28870799c53fc2bb7acf937c8a8e165033dba1a5aba3John McCall unsigned Opc : 6; 2888be9af1288881110e406b87914162eaa59f1e5918Lang Hames 2889be9af1288881110e406b87914162eaa59f1e5918Lang Hames // Records the FP_CONTRACT pragma status at the point that this binary 2890be9af1288881110e406b87914162eaa59f1e5918Lang Hames // operator was parsed. This bit is only meaningful for operations on 2891be9af1288881110e406b87914162eaa59f1e5918Lang Hames // floating point types. For all other types it should default to 2892be9af1288881110e406b87914162eaa59f1e5918Lang Hames // false. 2893be9af1288881110e406b87914162eaa59f1e5918Lang Hames unsigned FPContractable : 1; 28940799c53fc2bb7acf937c8a8e165033dba1a5aba3John McCall SourceLocation OpLoc; 28950799c53fc2bb7acf937c8a8e165033dba1a5aba3John McCall 289617d1b2ac9f8371a0a2e79d4f8e0008658164f080Chris Lattner enum { LHS, RHS, END_EXPR }; 28975549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek Stmt* SubExprs[END_EXPR]; 28981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumppublic: 28991eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 290017d1b2ac9f8371a0a2e79d4f8e0008658164f080Chris Lattner BinaryOperator(Expr *lhs, Expr *rhs, Opcode opc, QualType ResTy, 2901f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall ExprValueKind VK, ExprObjectKind OK, 2902be9af1288881110e406b87914162eaa59f1e5918Lang Hames SourceLocation opLoc, bool fpContractable) 2903f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall : Expr(BinaryOperatorClass, ResTy, VK, OK, 2904898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor lhs->isTypeDependent() || rhs->isTypeDependent(), 2905bebbe0d9b7568ce43a464286bee49429489ef483Douglas Gregor lhs->isValueDependent() || rhs->isValueDependent(), 2906561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor (lhs->isInstantiationDependent() || 2907561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor rhs->isInstantiationDependent()), 2908bebbe0d9b7568ce43a464286bee49429489ef483Douglas Gregor (lhs->containsUnexpandedParameterPack() || 2909bebbe0d9b7568ce43a464286bee49429489ef483Douglas Gregor rhs->containsUnexpandedParameterPack())), 2910be9af1288881110e406b87914162eaa59f1e5918Lang Hames Opc(opc), FPContractable(fpContractable), OpLoc(opLoc) { 29111237c673c07f9d827129ba02720108816abde562Ted Kremenek SubExprs[LHS] = lhs; 29121237c673c07f9d827129ba02720108816abde562Ted Kremenek SubExprs[RHS] = rhs; 29131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump assert(!isCompoundAssignmentOp() && 291458b65d953e67251bfce28a5251bb3b496490f343Stefanus Du Toit "Use CompoundAssignOperator for compound assignments"); 29155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 29165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2917db600c330a37b1c3ab4533310729910ee188f900Douglas Gregor /// \brief Construct an empty binary operator. 29181eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump explicit BinaryOperator(EmptyShell Empty) 29192de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall : Expr(BinaryOperatorClass, Empty), Opc(BO_Comma) { } 2920db600c330a37b1c3ab4533310729910ee188f900Douglas Gregor 29214f311183be3d923da9fbe8702c453688b4c426a9Daniel Dunbar SourceLocation getExprLoc() const LLVM_READONLY { return OpLoc; } 292217d1b2ac9f8371a0a2e79d4f8e0008658164f080Chris Lattner SourceLocation getOperatorLoc() const { return OpLoc; } 2923db600c330a37b1c3ab4533310729910ee188f900Douglas Gregor void setOperatorLoc(SourceLocation L) { OpLoc = L; } 2924db600c330a37b1c3ab4533310729910ee188f900Douglas Gregor 29250799c53fc2bb7acf937c8a8e165033dba1a5aba3John McCall Opcode getOpcode() const { return static_cast<Opcode>(Opc); } 2926db600c330a37b1c3ab4533310729910ee188f900Douglas Gregor void setOpcode(Opcode O) { Opc = O; } 2927db600c330a37b1c3ab4533310729910ee188f900Douglas Gregor 29285549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek Expr *getLHS() const { return cast<Expr>(SubExprs[LHS]); } 2929db600c330a37b1c3ab4533310729910ee188f900Douglas Gregor void setLHS(Expr *E) { SubExprs[LHS] = E; } 29305549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek Expr *getRHS() const { return cast<Expr>(SubExprs[RHS]); } 2931db600c330a37b1c3ab4533310729910ee188f900Douglas Gregor void setRHS(Expr *E) { SubExprs[RHS] = E; } 2932db600c330a37b1c3ab4533310729910ee188f900Douglas Gregor 293365d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocStart() const LLVM_READONLY { 293465d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen return getLHS()->getLocStart(); 293565d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen } 293665d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocEnd() const LLVM_READONLY { 293765d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen return getRHS()->getLocEnd(); 29385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 29391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 29405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// getOpcodeStr - Turn an Opcode enum value into the punctuation char it 29415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// corresponds to, e.g. "<<=". 29420bea86307eb8c16339315a1e261fc490eb505c5bDavid Blaikie static StringRef getOpcodeStr(Opcode Op); 29435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 29440bea86307eb8c16339315a1e261fc490eb505c5bDavid Blaikie StringRef getOpcodeStr() const { return getOpcodeStr(getOpcode()); } 2945a84c02d0f4d63975a1c52b9bb8308d88e9d79352Ted Kremenek 2946063daf6e196c51f162e0485478355d8e280eef5cDouglas Gregor /// \brief Retrieve the binary opcode that corresponds to the given 2947063daf6e196c51f162e0485478355d8e280eef5cDouglas Gregor /// overloaded operator. 2948063daf6e196c51f162e0485478355d8e280eef5cDouglas Gregor static Opcode getOverloadedOpcode(OverloadedOperatorKind OO); 2949063daf6e196c51f162e0485478355d8e280eef5cDouglas Gregor 2950063daf6e196c51f162e0485478355d8e280eef5cDouglas Gregor /// \brief Retrieve the overloaded operator kind that corresponds to 2951063daf6e196c51f162e0485478355d8e280eef5cDouglas Gregor /// the given binary opcode. 2952063daf6e196c51f162e0485478355d8e280eef5cDouglas Gregor static OverloadedOperatorKind getOverloadedOperator(Opcode Opc); 2953063daf6e196c51f162e0485478355d8e280eef5cDouglas Gregor 29545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// predicates to categorize the respective opcodes. 2955200121569dc6cff10a1fb6ed7500098770b9dd25Sebastian Redl bool isPtrMemOp() const { return Opc == BO_PtrMemD || Opc == BO_PtrMemI; } 29562de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall bool isMultiplicativeOp() const { return Opc >= BO_Mul && Opc <= BO_Rem; } 29572de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall static bool isAdditiveOp(Opcode Opc) { return Opc == BO_Add || Opc==BO_Sub; } 29580799c53fc2bb7acf937c8a8e165033dba1a5aba3John McCall bool isAdditiveOp() const { return isAdditiveOp(getOpcode()); } 29592de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall static bool isShiftOp(Opcode Opc) { return Opc == BO_Shl || Opc == BO_Shr; } 29600799c53fc2bb7acf937c8a8e165033dba1a5aba3John McCall bool isShiftOp() const { return isShiftOp(getOpcode()); } 2961aee3c9375f97a49edef2a36f15df6abd9748e2a1Sebastian Redl 29622de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall static bool isBitwiseOp(Opcode Opc) { return Opc >= BO_And && Opc <= BO_Or; } 29630799c53fc2bb7acf937c8a8e165033dba1a5aba3John McCall bool isBitwiseOp() const { return isBitwiseOp(getOpcode()); } 2964f2da7a06f6b98c3886d9b871ab839f5085b1c238Ted Kremenek 29652de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall static bool isRelationalOp(Opcode Opc) { return Opc >= BO_LT && Opc<=BO_GE; } 29660799c53fc2bb7acf937c8a8e165033dba1a5aba3John McCall bool isRelationalOp() const { return isRelationalOp(getOpcode()); } 2967f2da7a06f6b98c3886d9b871ab839f5085b1c238Ted Kremenek 29682de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall static bool isEqualityOp(Opcode Opc) { return Opc == BO_EQ || Opc == BO_NE; } 29690799c53fc2bb7acf937c8a8e165033dba1a5aba3John McCall bool isEqualityOp() const { return isEqualityOp(getOpcode()); } 29701eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 29712de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall static bool isComparisonOp(Opcode Opc) { return Opc >= BO_LT && Opc<=BO_NE; } 29720799c53fc2bb7acf937c8a8e165033dba1a5aba3John McCall bool isComparisonOp() const { return isComparisonOp(getOpcode()); } 2973aee3c9375f97a49edef2a36f15df6abd9748e2a1Sebastian Redl 29748569281fb7ce9b5ca164a0528b876acbb45eb989Jordan Rose static Opcode negateComparisonOp(Opcode Opc) { 29758569281fb7ce9b5ca164a0528b876acbb45eb989Jordan Rose switch (Opc) { 29768569281fb7ce9b5ca164a0528b876acbb45eb989Jordan Rose default: 29778569281fb7ce9b5ca164a0528b876acbb45eb989Jordan Rose llvm_unreachable("Not a comparsion operator."); 29788569281fb7ce9b5ca164a0528b876acbb45eb989Jordan Rose case BO_LT: return BO_GE; 29798569281fb7ce9b5ca164a0528b876acbb45eb989Jordan Rose case BO_GT: return BO_LE; 29808569281fb7ce9b5ca164a0528b876acbb45eb989Jordan Rose case BO_LE: return BO_GT; 29818569281fb7ce9b5ca164a0528b876acbb45eb989Jordan Rose case BO_GE: return BO_LT; 29828569281fb7ce9b5ca164a0528b876acbb45eb989Jordan Rose case BO_EQ: return BO_NE; 29838569281fb7ce9b5ca164a0528b876acbb45eb989Jordan Rose case BO_NE: return BO_EQ; 29848569281fb7ce9b5ca164a0528b876acbb45eb989Jordan Rose } 29858569281fb7ce9b5ca164a0528b876acbb45eb989Jordan Rose } 29868569281fb7ce9b5ca164a0528b876acbb45eb989Jordan Rose 29878569281fb7ce9b5ca164a0528b876acbb45eb989Jordan Rose static Opcode reverseComparisonOp(Opcode Opc) { 29888569281fb7ce9b5ca164a0528b876acbb45eb989Jordan Rose switch (Opc) { 29898569281fb7ce9b5ca164a0528b876acbb45eb989Jordan Rose default: 29908569281fb7ce9b5ca164a0528b876acbb45eb989Jordan Rose llvm_unreachable("Not a comparsion operator."); 29918569281fb7ce9b5ca164a0528b876acbb45eb989Jordan Rose case BO_LT: return BO_GT; 29928569281fb7ce9b5ca164a0528b876acbb45eb989Jordan Rose case BO_GT: return BO_LT; 29938569281fb7ce9b5ca164a0528b876acbb45eb989Jordan Rose case BO_LE: return BO_GE; 29948569281fb7ce9b5ca164a0528b876acbb45eb989Jordan Rose case BO_GE: return BO_LE; 29958569281fb7ce9b5ca164a0528b876acbb45eb989Jordan Rose case BO_EQ: 29968569281fb7ce9b5ca164a0528b876acbb45eb989Jordan Rose case BO_NE: 29978569281fb7ce9b5ca164a0528b876acbb45eb989Jordan Rose return Opc; 29988569281fb7ce9b5ca164a0528b876acbb45eb989Jordan Rose } 29998569281fb7ce9b5ca164a0528b876acbb45eb989Jordan Rose } 30008569281fb7ce9b5ca164a0528b876acbb45eb989Jordan Rose 30012de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall static bool isLogicalOp(Opcode Opc) { return Opc == BO_LAnd || Opc==BO_LOr; } 30020799c53fc2bb7acf937c8a8e165033dba1a5aba3John McCall bool isLogicalOp() const { return isLogicalOp(getOpcode()); } 3003f2da7a06f6b98c3886d9b871ab839f5085b1c238Ted Kremenek 30040e800c9c20d1a658a91096c756c4a4a9e90264fcJohn McCall static bool isAssignmentOp(Opcode Opc) { 30050e800c9c20d1a658a91096c756c4a4a9e90264fcJohn McCall return Opc >= BO_Assign && Opc <= BO_OrAssign; 30060e800c9c20d1a658a91096c756c4a4a9e90264fcJohn McCall } 30070e800c9c20d1a658a91096c756c4a4a9e90264fcJohn McCall bool isAssignmentOp() const { return isAssignmentOp(getOpcode()); } 30080e800c9c20d1a658a91096c756c4a4a9e90264fcJohn McCall 30090e800c9c20d1a658a91096c756c4a4a9e90264fcJohn McCall static bool isCompoundAssignmentOp(Opcode Opc) { 30102de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall return Opc > BO_Assign && Opc <= BO_OrAssign; 30112de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall } 30120e800c9c20d1a658a91096c756c4a4a9e90264fcJohn McCall bool isCompoundAssignmentOp() const { 30130e800c9c20d1a658a91096c756c4a4a9e90264fcJohn McCall return isCompoundAssignmentOp(getOpcode()); 30140e800c9c20d1a658a91096c756c4a4a9e90264fcJohn McCall } 30154b9c2d235fb9449e249d74f48ecfec601650de93John McCall static Opcode getOpForCompoundAssignment(Opcode Opc) { 30164b9c2d235fb9449e249d74f48ecfec601650de93John McCall assert(isCompoundAssignmentOp(Opc)); 3017b92e5d0acbb21e57498fcc4157e108a50c82b857John McCall if (Opc >= BO_AndAssign) 3018b92e5d0acbb21e57498fcc4157e108a50c82b857John McCall return Opcode(unsigned(Opc) - BO_AndAssign + BO_And); 30194b9c2d235fb9449e249d74f48ecfec601650de93John McCall else 30204b9c2d235fb9449e249d74f48ecfec601650de93John McCall return Opcode(unsigned(Opc) - BO_MulAssign + BO_Mul); 30214b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 30220e800c9c20d1a658a91096c756c4a4a9e90264fcJohn McCall 30230e800c9c20d1a658a91096c756c4a4a9e90264fcJohn McCall static bool isShiftAssignOp(Opcode Opc) { 30242de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall return Opc == BO_ShlAssign || Opc == BO_ShrAssign; 30252de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall } 30260e800c9c20d1a658a91096c756c4a4a9e90264fcJohn McCall bool isShiftAssignOp() const { 30270e800c9c20d1a658a91096c756c4a4a9e90264fcJohn McCall return isShiftAssignOp(getOpcode()); 30280e800c9c20d1a658a91096c756c4a4a9e90264fcJohn McCall } 30291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 30301eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump static bool classof(const Stmt *S) { 30314bfe1968410ea8ffe3b4f629addd7c4bcf484765Sean Hunt return S->getStmtClass() >= firstBinaryOperatorConstant && 30324bfe1968410ea8ffe3b4f629addd7c4bcf484765Sean Hunt S->getStmtClass() <= lastBinaryOperatorConstant; 30335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 30341237c673c07f9d827129ba02720108816abde562Ted Kremenek 30351237c673c07f9d827129ba02720108816abde562Ted Kremenek // Iterators 303663c00d7f35fa060c0a446c9df3a4402d9c7757feJohn McCall child_range children() { 303763c00d7f35fa060c0a446c9df3a4402d9c7757feJohn McCall return child_range(&SubExprs[0], &SubExprs[0]+END_EXPR); 303863c00d7f35fa060c0a446c9df3a4402d9c7757feJohn McCall } 30391237c673c07f9d827129ba02720108816abde562Ted Kremenek 3040be9af1288881110e406b87914162eaa59f1e5918Lang Hames // Set the FP contractability status of this operator. Only meaningful for 3041be9af1288881110e406b87914162eaa59f1e5918Lang Hames // operations on floating point types. 3042be9af1288881110e406b87914162eaa59f1e5918Lang Hames void setFPContractable(bool FPC) { FPContractable = FPC; } 3043be9af1288881110e406b87914162eaa59f1e5918Lang Hames 3044be9af1288881110e406b87914162eaa59f1e5918Lang Hames // Get the FP contractability status of this operator. Only meaningful for 3045be9af1288881110e406b87914162eaa59f1e5918Lang Hames // operations on floating point types. 3046be9af1288881110e406b87914162eaa59f1e5918Lang Hames bool isFPContractable() const { return FPContractable; } 3047be9af1288881110e406b87914162eaa59f1e5918Lang Hames 30485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerprotected: 304917d1b2ac9f8371a0a2e79d4f8e0008658164f080Chris Lattner BinaryOperator(Expr *lhs, Expr *rhs, Opcode opc, QualType ResTy, 3050f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall ExprValueKind VK, ExprObjectKind OK, 3051be9af1288881110e406b87914162eaa59f1e5918Lang Hames SourceLocation opLoc, bool fpContractable, bool dead2) 3052f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall : Expr(CompoundAssignOperatorClass, ResTy, VK, OK, 30532333f7727f97018d6742e1e0938133bcfad967abEli Friedman lhs->isTypeDependent() || rhs->isTypeDependent(), 3054bebbe0d9b7568ce43a464286bee49429489ef483Douglas Gregor lhs->isValueDependent() || rhs->isValueDependent(), 3055561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor (lhs->isInstantiationDependent() || 3056561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor rhs->isInstantiationDependent()), 3057bebbe0d9b7568ce43a464286bee49429489ef483Douglas Gregor (lhs->containsUnexpandedParameterPack() || 3058bebbe0d9b7568ce43a464286bee49429489ef483Douglas Gregor rhs->containsUnexpandedParameterPack())), 3059be9af1288881110e406b87914162eaa59f1e5918Lang Hames Opc(opc), FPContractable(fpContractable), OpLoc(opLoc) { 30601237c673c07f9d827129ba02720108816abde562Ted Kremenek SubExprs[LHS] = lhs; 30611237c673c07f9d827129ba02720108816abde562Ted Kremenek SubExprs[RHS] = rhs; 30625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 3063ad90e96fb7eed26d5217dd06ba50ecbbbebb59e6Douglas Gregor 30641eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump BinaryOperator(StmtClass SC, EmptyShell Empty) 30652de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall : Expr(SC, Empty), Opc(BO_MulAssign) { } 30665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer}; 30675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 30685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// CompoundAssignOperator - For compound assignments (e.g. +=), we keep 30695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// track of the type the operation is performed in. Due to the semantics of 3070ec5bc81fd55bfcc26fc4bde6d5e33113d94c2209Zhongxing Xu/// these operators, the operands are promoted, the arithmetic performed, an 30715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// implicit conversion back to the result type done, then the assignment takes 30725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// place. This captures the intermediate type which the computation is done 30735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// in. 30745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass CompoundAssignOperator : public BinaryOperator { 3075ab3a852ae713189444dcbf75e70accf1e8c2b7f2Eli Friedman QualType ComputationLHSType; 3076ab3a852ae713189444dcbf75e70accf1e8c2b7f2Eli Friedman QualType ComputationResultType; 30775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerpublic: 3078f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall CompoundAssignOperator(Expr *lhs, Expr *rhs, Opcode opc, QualType ResType, 3079f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall ExprValueKind VK, ExprObjectKind OK, 3080f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall QualType CompLHSType, QualType CompResultType, 3081be9af1288881110e406b87914162eaa59f1e5918Lang Hames SourceLocation OpLoc, bool fpContractable) 3082be9af1288881110e406b87914162eaa59f1e5918Lang Hames : BinaryOperator(lhs, rhs, opc, ResType, VK, OK, OpLoc, fpContractable, 3083be9af1288881110e406b87914162eaa59f1e5918Lang Hames true), 3084ab3a852ae713189444dcbf75e70accf1e8c2b7f2Eli Friedman ComputationLHSType(CompLHSType), 3085ab3a852ae713189444dcbf75e70accf1e8c2b7f2Eli Friedman ComputationResultType(CompResultType) { 30861eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump assert(isCompoundAssignmentOp() && 30875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer "Only should be used for compound assignments"); 30885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 30895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3090ad90e96fb7eed26d5217dd06ba50ecbbbebb59e6Douglas Gregor /// \brief Build an empty compound assignment operator expression. 3091ad90e96fb7eed26d5217dd06ba50ecbbbebb59e6Douglas Gregor explicit CompoundAssignOperator(EmptyShell Empty) 3092ad90e96fb7eed26d5217dd06ba50ecbbbebb59e6Douglas Gregor : BinaryOperator(CompoundAssignOperatorClass, Empty) { } 3093ad90e96fb7eed26d5217dd06ba50ecbbbebb59e6Douglas Gregor 3094ab3a852ae713189444dcbf75e70accf1e8c2b7f2Eli Friedman // The two computation types are the type the LHS is converted 3095ab3a852ae713189444dcbf75e70accf1e8c2b7f2Eli Friedman // to for the computation and the type of the result; the two are 3096ab3a852ae713189444dcbf75e70accf1e8c2b7f2Eli Friedman // distinct in a few cases (specifically, int+=ptr and ptr-=ptr). 3097ab3a852ae713189444dcbf75e70accf1e8c2b7f2Eli Friedman QualType getComputationLHSType() const { return ComputationLHSType; } 3098ad90e96fb7eed26d5217dd06ba50ecbbbebb59e6Douglas Gregor void setComputationLHSType(QualType T) { ComputationLHSType = T; } 3099ad90e96fb7eed26d5217dd06ba50ecbbbebb59e6Douglas Gregor 3100ab3a852ae713189444dcbf75e70accf1e8c2b7f2Eli Friedman QualType getComputationResultType() const { return ComputationResultType; } 3101ad90e96fb7eed26d5217dd06ba50ecbbbebb59e6Douglas Gregor void setComputationResultType(QualType T) { ComputationResultType = T; } 3102ad90e96fb7eed26d5217dd06ba50ecbbbebb59e6Douglas Gregor 31031eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump static bool classof(const Stmt *S) { 31041eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return S->getStmtClass() == CompoundAssignOperatorClass; 31055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 31065f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer}; 31075f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 310856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall/// AbstractConditionalOperator - An abstract base class for 310956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall/// ConditionalOperator and BinaryConditionalOperator. 311056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCallclass AbstractConditionalOperator : public Expr { 311156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall SourceLocation QuestionLoc, ColonLoc; 311256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall friend class ASTStmtReader; 311356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 311456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCallprotected: 311556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall AbstractConditionalOperator(StmtClass SC, QualType T, 311656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall ExprValueKind VK, ExprObjectKind OK, 3117561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor bool TD, bool VD, bool ID, 311856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall bool ContainsUnexpandedParameterPack, 311956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall SourceLocation qloc, 312056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall SourceLocation cloc) 3121561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor : Expr(SC, T, VK, OK, TD, VD, ID, ContainsUnexpandedParameterPack), 312256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall QuestionLoc(qloc), ColonLoc(cloc) {} 312356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 312456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall AbstractConditionalOperator(StmtClass SC, EmptyShell Empty) 312556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall : Expr(SC, Empty) { } 312656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 312756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCallpublic: 312856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall // getCond - Return the expression representing the condition for 312956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall // the ?: operator. 313056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall Expr *getCond() const; 313156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 313256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall // getTrueExpr - Return the subexpression representing the value of 313356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall // the expression if the condition evaluates to true. 313456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall Expr *getTrueExpr() const; 313556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 313656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall // getFalseExpr - Return the subexpression representing the value of 313756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall // the expression if the condition evaluates to false. This is 313856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall // the same as getRHS. 313956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall Expr *getFalseExpr() const; 314056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 314156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall SourceLocation getQuestionLoc() const { return QuestionLoc; } 314256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall SourceLocation getColonLoc() const { return ColonLoc; } 314356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 314456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall static bool classof(const Stmt *T) { 314556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall return T->getStmtClass() == ConditionalOperatorClass || 314656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall T->getStmtClass() == BinaryConditionalOperatorClass; 314756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall } 314856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall}; 314956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 315056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall/// ConditionalOperator - The ?: ternary operator. The GNU "missing 315156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall/// middle" extension is a BinaryConditionalOperator. 315256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCallclass ConditionalOperator : public AbstractConditionalOperator { 31531237c673c07f9d827129ba02720108816abde562Ted Kremenek enum { COND, LHS, RHS, END_EXPR }; 31545549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek Stmt* SubExprs[END_EXPR]; // Left/Middle/Right hand sides. 315556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 315656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall friend class ASTStmtReader; 31575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerpublic: 315847e1f7c68bf375cac470fdb2b599ddbb395aeb52Douglas Gregor ConditionalOperator(Expr *cond, SourceLocation QLoc, Expr *lhs, 315956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall SourceLocation CLoc, Expr *rhs, 31600943168ac126b8047f30f6bd215fbe7db14d61baJohn McCall QualType t, ExprValueKind VK, ExprObjectKind OK) 316156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall : AbstractConditionalOperator(ConditionalOperatorClass, t, VK, OK, 3162898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor // FIXME: the type of the conditional operator doesn't 3163898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor // depend on the type of the conditional, but the standard 3164898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor // seems to imply that it could. File a bug! 316556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall (lhs->isTypeDependent() || rhs->isTypeDependent()), 316656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall (cond->isValueDependent() || lhs->isValueDependent() || 316756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall rhs->isValueDependent()), 3168561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor (cond->isInstantiationDependent() || 3169561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor lhs->isInstantiationDependent() || 3170561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor rhs->isInstantiationDependent()), 3171bebbe0d9b7568ce43a464286bee49429489ef483Douglas Gregor (cond->containsUnexpandedParameterPack() || 317256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall lhs->containsUnexpandedParameterPack() || 317356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall rhs->containsUnexpandedParameterPack()), 317456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall QLoc, CLoc) { 31751237c673c07f9d827129ba02720108816abde562Ted Kremenek SubExprs[COND] = cond; 31761237c673c07f9d827129ba02720108816abde562Ted Kremenek SubExprs[LHS] = lhs; 31771237c673c07f9d827129ba02720108816abde562Ted Kremenek SubExprs[RHS] = rhs; 31781237c673c07f9d827129ba02720108816abde562Ted Kremenek } 31795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3180ad90e96fb7eed26d5217dd06ba50ecbbbebb59e6Douglas Gregor /// \brief Build an empty conditional operator. 3181ad90e96fb7eed26d5217dd06ba50ecbbbebb59e6Douglas Gregor explicit ConditionalOperator(EmptyShell Empty) 318256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall : AbstractConditionalOperator(ConditionalOperatorClass, Empty) { } 3183ad90e96fb7eed26d5217dd06ba50ecbbbebb59e6Douglas Gregor 3184395a2abf0028968d85958610e393e067885dc14fTed Kremenek // getCond - Return the expression representing the condition for 318556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall // the ?: operator. 31865549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek Expr *getCond() const { return cast<Expr>(SubExprs[COND]); } 3187395a2abf0028968d85958610e393e067885dc14fTed Kremenek 318856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall // getTrueExpr - Return the subexpression representing the value of 318956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall // the expression if the condition evaluates to true. 319056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall Expr *getTrueExpr() const { return cast<Expr>(SubExprs[LHS]); } 31911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 319256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall // getFalseExpr - Return the subexpression representing the value of 319356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall // the expression if the condition evaluates to false. This is 319456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall // the same as getRHS. 31955549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek Expr *getFalseExpr() const { return cast<Expr>(SubExprs[RHS]); } 3196ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 319756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall Expr *getLHS() const { return cast<Expr>(SubExprs[LHS]); } 31985549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek Expr *getRHS() const { return cast<Expr>(SubExprs[RHS]); } 319947e1f7c68bf375cac470fdb2b599ddbb395aeb52Douglas Gregor 320065d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocStart() const LLVM_READONLY { 320165d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen return getCond()->getLocStart(); 320265d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen } 320365d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocEnd() const LLVM_READONLY { 320465d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen return getRHS()->getLocEnd(); 32055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 320665d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen 32071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump static bool classof(const Stmt *T) { 32081eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return T->getStmtClass() == ConditionalOperatorClass; 32095f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 32101eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 32111237c673c07f9d827129ba02720108816abde562Ted Kremenek // Iterators 321263c00d7f35fa060c0a446c9df3a4402d9c7757feJohn McCall child_range children() { 321363c00d7f35fa060c0a446c9df3a4402d9c7757feJohn McCall return child_range(&SubExprs[0], &SubExprs[0]+END_EXPR); 321463c00d7f35fa060c0a446c9df3a4402d9c7757feJohn McCall } 32155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer}; 32165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 321756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall/// BinaryConditionalOperator - The GNU extension to the conditional 321856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall/// operator which allows the middle operand to be omitted. 321956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall/// 322056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall/// This is a different expression kind on the assumption that almost 322156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall/// every client ends up needing to know that these are different. 322256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCallclass BinaryConditionalOperator : public AbstractConditionalOperator { 322356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall enum { COMMON, COND, LHS, RHS, NUM_SUBEXPRS }; 322456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 322556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// - the common condition/left-hand-side expression, which will be 322656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// evaluated as the opaque value 322756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// - the condition, expressed in terms of the opaque value 322856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// - the left-hand-side, expressed in terms of the opaque value 322956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// - the right-hand-side 323056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall Stmt *SubExprs[NUM_SUBEXPRS]; 323156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall OpaqueValueExpr *OpaqueValue; 323256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 323356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall friend class ASTStmtReader; 323456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCallpublic: 323556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall BinaryConditionalOperator(Expr *common, OpaqueValueExpr *opaqueValue, 323656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall Expr *cond, Expr *lhs, Expr *rhs, 323756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall SourceLocation qloc, SourceLocation cloc, 323856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall QualType t, ExprValueKind VK, ExprObjectKind OK) 323956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall : AbstractConditionalOperator(BinaryConditionalOperatorClass, t, VK, OK, 324056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall (common->isTypeDependent() || rhs->isTypeDependent()), 324156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall (common->isValueDependent() || rhs->isValueDependent()), 3242561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor (common->isInstantiationDependent() || 3243561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor rhs->isInstantiationDependent()), 324456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall (common->containsUnexpandedParameterPack() || 324556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall rhs->containsUnexpandedParameterPack()), 324656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall qloc, cloc), 324756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall OpaqueValue(opaqueValue) { 324856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall SubExprs[COMMON] = common; 324956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall SubExprs[COND] = cond; 325056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall SubExprs[LHS] = lhs; 325156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall SubExprs[RHS] = rhs; 325297df54e0c075bc8d6a869597e771dad0c11a2180Douglas Gregor assert(OpaqueValue->getSourceExpr() == common && "Wrong opaque value"); 325356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall } 325456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 325556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// \brief Build an empty conditional operator. 325656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall explicit BinaryConditionalOperator(EmptyShell Empty) 325756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall : AbstractConditionalOperator(BinaryConditionalOperatorClass, Empty) { } 325856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 325956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// \brief getCommon - Return the common expression, written to the 326056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// left of the condition. The opaque value will be bound to the 326156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// result of this expression. 326256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall Expr *getCommon() const { return cast<Expr>(SubExprs[COMMON]); } 326356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 326456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// \brief getOpaqueValue - Return the opaque value placeholder. 326556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall OpaqueValueExpr *getOpaqueValue() const { return OpaqueValue; } 326656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 326756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// \brief getCond - Return the condition expression; this is defined 326856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// in terms of the opaque value. 326956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall Expr *getCond() const { return cast<Expr>(SubExprs[COND]); } 327056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 327156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// \brief getTrueExpr - Return the subexpression which will be 327256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// evaluated if the condition evaluates to true; this is defined 327356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// in terms of the opaque value. 327456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall Expr *getTrueExpr() const { 327556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall return cast<Expr>(SubExprs[LHS]); 327656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall } 327756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 327856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// \brief getFalseExpr - Return the subexpression which will be 327956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// evaluated if the condnition evaluates to false; this is 328056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// defined in terms of the opaque value. 328156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall Expr *getFalseExpr() const { 328256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall return cast<Expr>(SubExprs[RHS]); 328356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall } 3284ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 328565d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocStart() const LLVM_READONLY { 328665d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen return getCommon()->getLocStart(); 328765d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen } 328865d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocEnd() const LLVM_READONLY { 328965d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen return getFalseExpr()->getLocEnd(); 329056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall } 329165d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen 329256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall static bool classof(const Stmt *T) { 329356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall return T->getStmtClass() == BinaryConditionalOperatorClass; 329456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall } 329556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 329656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall // Iterators 329756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall child_range children() { 329856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall return child_range(SubExprs, SubExprs + NUM_SUBEXPRS); 329956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall } 330056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall}; 330156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 330256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCallinline Expr *AbstractConditionalOperator::getCond() const { 330356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall if (const ConditionalOperator *co = dyn_cast<ConditionalOperator>(this)) 330456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall return co->getCond(); 330556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall return cast<BinaryConditionalOperator>(this)->getCond(); 330656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall} 330756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 330856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCallinline Expr *AbstractConditionalOperator::getTrueExpr() const { 330956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall if (const ConditionalOperator *co = dyn_cast<ConditionalOperator>(this)) 331056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall return co->getTrueExpr(); 331156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall return cast<BinaryConditionalOperator>(this)->getTrueExpr(); 331256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall} 331356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 331456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCallinline Expr *AbstractConditionalOperator::getFalseExpr() const { 331556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall if (const ConditionalOperator *co = dyn_cast<ConditionalOperator>(this)) 331656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall return co->getFalseExpr(); 331756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall return cast<BinaryConditionalOperator>(this)->getFalseExpr(); 331856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall} 331956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 33206481a57fefbf1a313ff439028470fe4c27a3b7a3Chris Lattner/// AddrLabelExpr - The GNU address of label extension, representing &&label. 33216481a57fefbf1a313ff439028470fe4c27a3b7a3Chris Lattnerclass AddrLabelExpr : public Expr { 33225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceLocation AmpAmpLoc, LabelLoc; 3323ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattner LabelDecl *Label; 33245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerpublic: 3325ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattner AddrLabelExpr(SourceLocation AALoc, SourceLocation LLoc, LabelDecl *L, 33266481a57fefbf1a313ff439028470fe4c27a3b7a3Chris Lattner QualType t) 3327561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor : Expr(AddrLabelExprClass, t, VK_RValue, OK_Ordinary, false, false, false, 3328561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor false), 33292333f7727f97018d6742e1e0938133bcfad967abEli Friedman AmpAmpLoc(AALoc), LabelLoc(LLoc), Label(L) {} 33301eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 33317d5c2f241c74e5f8d9ec492e8f9f268e5e9ae41fDouglas Gregor /// \brief Build an empty address of a label expression. 33321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump explicit AddrLabelExpr(EmptyShell Empty) 33337d5c2f241c74e5f8d9ec492e8f9f268e5e9ae41fDouglas Gregor : Expr(AddrLabelExprClass, Empty) { } 33347d5c2f241c74e5f8d9ec492e8f9f268e5e9ae41fDouglas Gregor 33357d5c2f241c74e5f8d9ec492e8f9f268e5e9ae41fDouglas Gregor SourceLocation getAmpAmpLoc() const { return AmpAmpLoc; } 33367d5c2f241c74e5f8d9ec492e8f9f268e5e9ae41fDouglas Gregor void setAmpAmpLoc(SourceLocation L) { AmpAmpLoc = L; } 33377d5c2f241c74e5f8d9ec492e8f9f268e5e9ae41fDouglas Gregor SourceLocation getLabelLoc() const { return LabelLoc; } 33387d5c2f241c74e5f8d9ec492e8f9f268e5e9ae41fDouglas Gregor void setLabelLoc(SourceLocation L) { LabelLoc = L; } 33397d5c2f241c74e5f8d9ec492e8f9f268e5e9ae41fDouglas Gregor 334065d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocStart() const LLVM_READONLY { return AmpAmpLoc; } 334165d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocEnd() const LLVM_READONLY { return LabelLoc; } 33421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3343ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattner LabelDecl *getLabel() const { return Label; } 3344ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattner void setLabel(LabelDecl *L) { Label = L; } 33457d5c2f241c74e5f8d9ec492e8f9f268e5e9ae41fDouglas Gregor 33465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer static bool classof(const Stmt *T) { 33471eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return T->getStmtClass() == AddrLabelExprClass; 33485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 33491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 33501237c673c07f9d827129ba02720108816abde562Ted Kremenek // Iterators 335163c00d7f35fa060c0a446c9df3a4402d9c7757feJohn McCall child_range children() { return child_range(); } 33525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer}; 3353ab18c4c0ac1a46a38aa84c2c8ea485612e21a614Chris Lattner 3354ab18c4c0ac1a46a38aa84c2c8ea485612e21a614Chris Lattner/// StmtExpr - This is the GNU Statement Expression extension: ({int X=4; X;}). 3355ab18c4c0ac1a46a38aa84c2c8ea485612e21a614Chris Lattner/// The StmtExpr contains a single CompoundStmt node, which it evaluates and 3356ab18c4c0ac1a46a38aa84c2c8ea485612e21a614Chris Lattner/// takes the value of the last subexpression. 3357f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall/// 3358f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall/// A StmtExpr is always an r-value; values "returned" out of a 3359f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall/// StmtExpr will be copied. 3360ab18c4c0ac1a46a38aa84c2c8ea485612e21a614Chris Lattnerclass StmtExpr : public Expr { 33615549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek Stmt *SubStmt; 3362ab18c4c0ac1a46a38aa84c2c8ea485612e21a614Chris Lattner SourceLocation LParenLoc, RParenLoc; 3363ab18c4c0ac1a46a38aa84c2c8ea485612e21a614Chris Lattnerpublic: 33642333f7727f97018d6742e1e0938133bcfad967abEli Friedman // FIXME: Does type-dependence need to be computed differently? 3365561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor // FIXME: Do we need to compute instantiation instantiation-dependence for 3366561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor // statements? (ugh!) 3367d34e915f33224c508ad55fbf975bd10b7876e197Steve Naroff StmtExpr(CompoundStmt *substmt, QualType T, 3368d34e915f33224c508ad55fbf975bd10b7876e197Steve Naroff SourceLocation lp, SourceLocation rp) : 3369f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall Expr(StmtExprClass, T, VK_RValue, OK_Ordinary, 3370561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor T->isDependentType(), false, false, false), 33712333f7727f97018d6742e1e0938133bcfad967abEli Friedman SubStmt(substmt), LParenLoc(lp), RParenLoc(rp) { } 33721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 33736a2dd55b0b3ae376d449a4b07bbb6b2d30b26330Douglas Gregor /// \brief Build an empty statement expression. 33746a2dd55b0b3ae376d449a4b07bbb6b2d30b26330Douglas Gregor explicit StmtExpr(EmptyShell Empty) : Expr(StmtExprClass, Empty) { } 33756a2dd55b0b3ae376d449a4b07bbb6b2d30b26330Douglas Gregor 33765549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek CompoundStmt *getSubStmt() { return cast<CompoundStmt>(SubStmt); } 33775549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek const CompoundStmt *getSubStmt() const { return cast<CompoundStmt>(SubStmt); } 33786a2dd55b0b3ae376d449a4b07bbb6b2d30b26330Douglas Gregor void setSubStmt(CompoundStmt *S) { SubStmt = S; } 33796a2dd55b0b3ae376d449a4b07bbb6b2d30b26330Douglas Gregor 338065d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocStart() const LLVM_READONLY { return LParenLoc; } 338165d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocEnd() const LLVM_READONLY { return RParenLoc; } 33821eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3383026dc96ac6ece60da5e1b98e2a71bd0ff0939fd8Chris Lattner SourceLocation getLParenLoc() const { return LParenLoc; } 33846a2dd55b0b3ae376d449a4b07bbb6b2d30b26330Douglas Gregor void setLParenLoc(SourceLocation L) { LParenLoc = L; } 3385026dc96ac6ece60da5e1b98e2a71bd0ff0939fd8Chris Lattner SourceLocation getRParenLoc() const { return RParenLoc; } 33866a2dd55b0b3ae376d449a4b07bbb6b2d30b26330Douglas Gregor void setRParenLoc(SourceLocation L) { RParenLoc = L; } 33871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3388ab18c4c0ac1a46a38aa84c2c8ea485612e21a614Chris Lattner static bool classof(const Stmt *T) { 33891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return T->getStmtClass() == StmtExprClass; 3390ab18c4c0ac1a46a38aa84c2c8ea485612e21a614Chris Lattner } 33911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 33921237c673c07f9d827129ba02720108816abde562Ted Kremenek // Iterators 339363c00d7f35fa060c0a446c9df3a4402d9c7757feJohn McCall child_range children() { return child_range(&SubStmt, &SubStmt+1); } 3394ab18c4c0ac1a46a38aa84c2c8ea485612e21a614Chris Lattner}; 3395ab18c4c0ac1a46a38aa84c2c8ea485612e21a614Chris Lattner 3396d34e915f33224c508ad55fbf975bd10b7876e197Steve Naroff 3397d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman/// ShuffleVectorExpr - clang-specific builtin-in function 3398d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman/// __builtin_shufflevector. 3399d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman/// This AST node represents a operator that does a constant 3400d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman/// shuffle, similar to LLVM's shufflevector instruction. It takes 3401d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman/// two vectors and a variable number of constant indices, 3402d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman/// and returns the appropriately shuffled vector. 3403d38617c8a50f9729c254ab76cd359af797c6739bEli Friedmanclass ShuffleVectorExpr : public Expr { 3404d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman SourceLocation BuiltinLoc, RParenLoc; 3405d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman 3406d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman // SubExprs - the list of values passed to the __builtin_shufflevector 3407d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman // function. The first two are vectors, and the rest are constant 3408d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman // indices. The number of values in this list is always 3409d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman // 2+the number of indices in the vector type. 34105549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek Stmt **SubExprs; 3411d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman unsigned NumExprs; 3412d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman 3413d38617c8a50f9729c254ab76cd359af797c6739bEli Friedmanpublic: 34143b6bef9a213249c6ab6d67c07b1ac6380961be3eBenjamin Kramer ShuffleVectorExpr(ASTContext &C, ArrayRef<Expr*> args, QualType Type, 34153b6bef9a213249c6ab6d67c07b1ac6380961be3eBenjamin Kramer SourceLocation BLoc, SourceLocation RP); 341694cd5d1397bb1a8bcd109602aa38dd787b164c22Douglas Gregor 341794cd5d1397bb1a8bcd109602aa38dd787b164c22Douglas Gregor /// \brief Build an empty vector-shuffle expression. 34181eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump explicit ShuffleVectorExpr(EmptyShell Empty) 341994cd5d1397bb1a8bcd109602aa38dd787b164c22Douglas Gregor : Expr(ShuffleVectorExprClass, Empty), SubExprs(0) { } 342094cd5d1397bb1a8bcd109602aa38dd787b164c22Douglas Gregor 342194cd5d1397bb1a8bcd109602aa38dd787b164c22Douglas Gregor SourceLocation getBuiltinLoc() const { return BuiltinLoc; } 342294cd5d1397bb1a8bcd109602aa38dd787b164c22Douglas Gregor void setBuiltinLoc(SourceLocation L) { BuiltinLoc = L; } 34231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 342494cd5d1397bb1a8bcd109602aa38dd787b164c22Douglas Gregor SourceLocation getRParenLoc() const { return RParenLoc; } 342594cd5d1397bb1a8bcd109602aa38dd787b164c22Douglas Gregor void setRParenLoc(SourceLocation L) { RParenLoc = L; } 342694cd5d1397bb1a8bcd109602aa38dd787b164c22Douglas Gregor 342765d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocStart() const LLVM_READONLY { return BuiltinLoc; } 342865d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocEnd() const LLVM_READONLY { return RParenLoc; } 342965d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen 3430d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman static bool classof(const Stmt *T) { 34311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return T->getStmtClass() == ShuffleVectorExprClass; 3432d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman } 34331eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3434d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman /// getNumSubExprs - Return the size of the SubExprs array. This includes the 3435d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman /// constant expression, the actual arguments passed in, and the function 3436d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman /// pointers. 3437d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman unsigned getNumSubExprs() const { return NumExprs; } 34381eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3439aa165f8458b51c546bebff947343e1a36f3594cbDouglas Gregor /// \brief Retrieve the array of expressions. 3440aa165f8458b51c546bebff947343e1a36f3594cbDouglas Gregor Expr **getSubExprs() { return reinterpret_cast<Expr **>(SubExprs); } 3441ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 3442d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman /// getExpr - Return the Expr at the specified index. 3443d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman Expr *getExpr(unsigned Index) { 3444d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman assert((Index < NumExprs) && "Arg access out of range!"); 34455549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek return cast<Expr>(SubExprs[Index]); 3446d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman } 3447d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman const Expr *getExpr(unsigned Index) const { 3448d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman assert((Index < NumExprs) && "Arg access out of range!"); 34495549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek return cast<Expr>(SubExprs[Index]); 3450d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman } 34511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 345227365ee830cec7cf52c088b400867ff67b0b3b23Dmitri Gribenko void setExprs(ASTContext &C, ArrayRef<Expr *> Exprs); 345394cd5d1397bb1a8bcd109602aa38dd787b164c22Douglas Gregor 34546f4f8083931a92f9959168d4430da7ddf9183100Craig Topper llvm::APSInt getShuffleMaskIdx(ASTContext &Ctx, unsigned N) const { 3455dde8c94873976632e3ada4d8d067e1e244184d51Eli Friedman assert((N < NumExprs - 2) && "Shuffle idx out of range!"); 34566f4f8083931a92f9959168d4430da7ddf9183100Craig Topper return getExpr(N+2)->EvaluateKnownConstInt(Ctx); 3457d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman } 34581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3459d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman // Iterators 346063c00d7f35fa060c0a446c9df3a4402d9c7757feJohn McCall child_range children() { 346163c00d7f35fa060c0a446c9df3a4402d9c7757feJohn McCall return child_range(&SubExprs[0], &SubExprs[0]+NumExprs); 346263c00d7f35fa060c0a446c9df3a4402d9c7757feJohn McCall } 3463d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman}; 3464d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman 3465d04fdd5f99f985abf2e7b7d7d4d427eebe001e55Steve Naroff/// ChooseExpr - GNU builtin-in function __builtin_choose_expr. 34661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// This AST node is similar to the conditional operator (?:) in C, with 3467d04fdd5f99f985abf2e7b7d7d4d427eebe001e55Steve Naroff/// the following exceptions: 34687976932a1c256d447316ffac58e9821417725e34Eli Friedman/// - the test expression must be a integer constant expression. 34697976932a1c256d447316ffac58e9821417725e34Eli Friedman/// - the expression returned acts like the chosen subexpression in every 34707976932a1c256d447316ffac58e9821417725e34Eli Friedman/// visible way: the type is the same as that of the chosen subexpression, 34717976932a1c256d447316ffac58e9821417725e34Eli Friedman/// and all predicates (whether it's an l-value, whether it's an integer 34727976932a1c256d447316ffac58e9821417725e34Eli Friedman/// constant expression, etc.) return the same result as for the chosen 34737976932a1c256d447316ffac58e9821417725e34Eli Friedman/// sub-expression. 3474d04fdd5f99f985abf2e7b7d7d4d427eebe001e55Steve Naroffclass ChooseExpr : public Expr { 34751237c673c07f9d827129ba02720108816abde562Ted Kremenek enum { COND, LHS, RHS, END_EXPR }; 34765549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek Stmt* SubExprs[END_EXPR]; // Left/Middle/Right hand sides. 3477d04fdd5f99f985abf2e7b7d7d4d427eebe001e55Steve Naroff SourceLocation BuiltinLoc, RParenLoc; 3478a5e660188a3c654cf0c88ed1093b28207e870b2bEli Friedman bool CondIsTrue; 3479d04fdd5f99f985abf2e7b7d7d4d427eebe001e55Steve Naroffpublic: 3480f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall ChooseExpr(SourceLocation BLoc, Expr *cond, Expr *lhs, Expr *rhs, 3481f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall QualType t, ExprValueKind VK, ExprObjectKind OK, 3482a5e660188a3c654cf0c88ed1093b28207e870b2bEli Friedman SourceLocation RP, bool condIsTrue, 3483a5e660188a3c654cf0c88ed1093b28207e870b2bEli Friedman bool TypeDependent, bool ValueDependent) 3484bebbe0d9b7568ce43a464286bee49429489ef483Douglas Gregor : Expr(ChooseExprClass, t, VK, OK, TypeDependent, ValueDependent, 3485561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor (cond->isInstantiationDependent() || 3486561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor lhs->isInstantiationDependent() || 3487561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor rhs->isInstantiationDependent()), 3488bebbe0d9b7568ce43a464286bee49429489ef483Douglas Gregor (cond->containsUnexpandedParameterPack() || 3489bebbe0d9b7568ce43a464286bee49429489ef483Douglas Gregor lhs->containsUnexpandedParameterPack() || 3490bebbe0d9b7568ce43a464286bee49429489ef483Douglas Gregor rhs->containsUnexpandedParameterPack())), 3491a5e660188a3c654cf0c88ed1093b28207e870b2bEli Friedman BuiltinLoc(BLoc), RParenLoc(RP), CondIsTrue(condIsTrue) { 34921237c673c07f9d827129ba02720108816abde562Ted Kremenek SubExprs[COND] = cond; 34931237c673c07f9d827129ba02720108816abde562Ted Kremenek SubExprs[LHS] = lhs; 34941237c673c07f9d827129ba02720108816abde562Ted Kremenek SubExprs[RHS] = rhs; 34951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 34967976932a1c256d447316ffac58e9821417725e34Eli Friedman 349744cae0c8669cdf83618cbe7fd36ea7a8e51cf97fDouglas Gregor /// \brief Build an empty __builtin_choose_expr. 349844cae0c8669cdf83618cbe7fd36ea7a8e51cf97fDouglas Gregor explicit ChooseExpr(EmptyShell Empty) : Expr(ChooseExprClass, Empty) { } 349944cae0c8669cdf83618cbe7fd36ea7a8e51cf97fDouglas Gregor 35007976932a1c256d447316ffac58e9821417725e34Eli Friedman /// isConditionTrue - Return whether the condition is true (i.e. not 35017976932a1c256d447316ffac58e9821417725e34Eli Friedman /// equal to zero). 3502a5e660188a3c654cf0c88ed1093b28207e870b2bEli Friedman bool isConditionTrue() const { 3503a5e660188a3c654cf0c88ed1093b28207e870b2bEli Friedman assert(!isConditionDependent() && 3504a5e660188a3c654cf0c88ed1093b28207e870b2bEli Friedman "Dependent condition isn't true or false"); 3505a5e660188a3c654cf0c88ed1093b28207e870b2bEli Friedman return CondIsTrue; 3506a5e660188a3c654cf0c88ed1093b28207e870b2bEli Friedman } 3507a5e660188a3c654cf0c88ed1093b28207e870b2bEli Friedman void setIsConditionTrue(bool isTrue) { CondIsTrue = isTrue; } 3508a5e660188a3c654cf0c88ed1093b28207e870b2bEli Friedman 3509a5e660188a3c654cf0c88ed1093b28207e870b2bEli Friedman bool isConditionDependent() const { 3510a5e660188a3c654cf0c88ed1093b28207e870b2bEli Friedman return getCond()->isTypeDependent() || getCond()->isValueDependent(); 3511a5e660188a3c654cf0c88ed1093b28207e870b2bEli Friedman } 35127976932a1c256d447316ffac58e9821417725e34Eli Friedman 35137976932a1c256d447316ffac58e9821417725e34Eli Friedman /// getChosenSubExpr - Return the subexpression chosen according to the 35147976932a1c256d447316ffac58e9821417725e34Eli Friedman /// condition. 3515a5e660188a3c654cf0c88ed1093b28207e870b2bEli Friedman Expr *getChosenSubExpr() const { 3516a5e660188a3c654cf0c88ed1093b28207e870b2bEli Friedman return isConditionTrue() ? getLHS() : getRHS(); 35177976932a1c256d447316ffac58e9821417725e34Eli Friedman } 35187976932a1c256d447316ffac58e9821417725e34Eli Friedman 35195549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek Expr *getCond() const { return cast<Expr>(SubExprs[COND]); } 352044cae0c8669cdf83618cbe7fd36ea7a8e51cf97fDouglas Gregor void setCond(Expr *E) { SubExprs[COND] = E; } 35215549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek Expr *getLHS() const { return cast<Expr>(SubExprs[LHS]); } 352244cae0c8669cdf83618cbe7fd36ea7a8e51cf97fDouglas Gregor void setLHS(Expr *E) { SubExprs[LHS] = E; } 35235549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek Expr *getRHS() const { return cast<Expr>(SubExprs[RHS]); } 352444cae0c8669cdf83618cbe7fd36ea7a8e51cf97fDouglas Gregor void setRHS(Expr *E) { SubExprs[RHS] = E; } 352544cae0c8669cdf83618cbe7fd36ea7a8e51cf97fDouglas Gregor 352644cae0c8669cdf83618cbe7fd36ea7a8e51cf97fDouglas Gregor SourceLocation getBuiltinLoc() const { return BuiltinLoc; } 352744cae0c8669cdf83618cbe7fd36ea7a8e51cf97fDouglas Gregor void setBuiltinLoc(SourceLocation L) { BuiltinLoc = L; } 35281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 352944cae0c8669cdf83618cbe7fd36ea7a8e51cf97fDouglas Gregor SourceLocation getRParenLoc() const { return RParenLoc; } 353044cae0c8669cdf83618cbe7fd36ea7a8e51cf97fDouglas Gregor void setRParenLoc(SourceLocation L) { RParenLoc = L; } 35311237c673c07f9d827129ba02720108816abde562Ted Kremenek 353265d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocStart() const LLVM_READONLY { return BuiltinLoc; } 353365d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocEnd() const LLVM_READONLY { return RParenLoc; } 353465d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen 3535d04fdd5f99f985abf2e7b7d7d4d427eebe001e55Steve Naroff static bool classof(const Stmt *T) { 35361eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return T->getStmtClass() == ChooseExprClass; 3537d04fdd5f99f985abf2e7b7d7d4d427eebe001e55Steve Naroff } 35381eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 35391237c673c07f9d827129ba02720108816abde562Ted Kremenek // Iterators 354063c00d7f35fa060c0a446c9df3a4402d9c7757feJohn McCall child_range children() { 354163c00d7f35fa060c0a446c9df3a4402d9c7757feJohn McCall return child_range(&SubExprs[0], &SubExprs[0]+END_EXPR); 354263c00d7f35fa060c0a446c9df3a4402d9c7757feJohn McCall } 3543d04fdd5f99f985abf2e7b7d7d4d427eebe001e55Steve Naroff}; 3544d04fdd5f99f985abf2e7b7d7d4d427eebe001e55Steve Naroff 35452d8b273470684a9cd47f0ce24743cc1f71ef7cbcDouglas Gregor/// GNUNullExpr - Implements the GNU __null extension, which is a name 35462d8b273470684a9cd47f0ce24743cc1f71ef7cbcDouglas Gregor/// for a null pointer constant that has integral type (e.g., int or 35472d8b273470684a9cd47f0ce24743cc1f71ef7cbcDouglas Gregor/// long) and is the same size and alignment as a pointer. The __null 35482d8b273470684a9cd47f0ce24743cc1f71ef7cbcDouglas Gregor/// extension is typically only used by system headers, which define 35492d8b273470684a9cd47f0ce24743cc1f71ef7cbcDouglas Gregor/// NULL as __null in C++ rather than using 0 (which is an integer 35502d8b273470684a9cd47f0ce24743cc1f71ef7cbcDouglas Gregor/// that may not match the size of a pointer). 35512d8b273470684a9cd47f0ce24743cc1f71ef7cbcDouglas Gregorclass GNUNullExpr : public Expr { 35522d8b273470684a9cd47f0ce24743cc1f71ef7cbcDouglas Gregor /// TokenLoc - The location of the __null keyword. 35532d8b273470684a9cd47f0ce24743cc1f71ef7cbcDouglas Gregor SourceLocation TokenLoc; 35542d8b273470684a9cd47f0ce24743cc1f71ef7cbcDouglas Gregor 35552d8b273470684a9cd47f0ce24743cc1f71ef7cbcDouglas Gregorpublic: 35561eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump GNUNullExpr(QualType Ty, SourceLocation Loc) 3557561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor : Expr(GNUNullExprClass, Ty, VK_RValue, OK_Ordinary, false, false, false, 3558561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor false), 3559f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall TokenLoc(Loc) { } 35602d8b273470684a9cd47f0ce24743cc1f71ef7cbcDouglas Gregor 356144cae0c8669cdf83618cbe7fd36ea7a8e51cf97fDouglas Gregor /// \brief Build an empty GNU __null expression. 356244cae0c8669cdf83618cbe7fd36ea7a8e51cf97fDouglas Gregor explicit GNUNullExpr(EmptyShell Empty) : Expr(GNUNullExprClass, Empty) { } 356344cae0c8669cdf83618cbe7fd36ea7a8e51cf97fDouglas Gregor 35642d8b273470684a9cd47f0ce24743cc1f71ef7cbcDouglas Gregor /// getTokenLocation - The location of the __null token. 35652d8b273470684a9cd47f0ce24743cc1f71ef7cbcDouglas Gregor SourceLocation getTokenLocation() const { return TokenLoc; } 356644cae0c8669cdf83618cbe7fd36ea7a8e51cf97fDouglas Gregor void setTokenLocation(SourceLocation L) { TokenLoc = L; } 35672d8b273470684a9cd47f0ce24743cc1f71ef7cbcDouglas Gregor 356865d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocStart() const LLVM_READONLY { return TokenLoc; } 356965d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocEnd() const LLVM_READONLY { return TokenLoc; } 357065d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen 35712d8b273470684a9cd47f0ce24743cc1f71ef7cbcDouglas Gregor static bool classof(const Stmt *T) { 35721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return T->getStmtClass() == GNUNullExprClass; 35732d8b273470684a9cd47f0ce24743cc1f71ef7cbcDouglas Gregor } 35741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 35752d8b273470684a9cd47f0ce24743cc1f71ef7cbcDouglas Gregor // Iterators 357663c00d7f35fa060c0a446c9df3a4402d9c7757feJohn McCall child_range children() { return child_range(); } 35772d8b273470684a9cd47f0ce24743cc1f71ef7cbcDouglas Gregor}; 35782d8b273470684a9cd47f0ce24743cc1f71ef7cbcDouglas Gregor 357974626d6ef2e194fcc911e071556660ff331eb4a8Zhongxing Xu/// VAArgExpr, used for the builtin function __builtin_va_arg. 35807c50aca2fe36f6daa9bf1c8c428f30e72f96470aAnders Carlssonclass VAArgExpr : public Expr { 35815549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek Stmt *Val; 35822cad900202561cdda18ea6cc51ddbf3e20e3c23aAbramo Bagnara TypeSourceInfo *TInfo; 35837c50aca2fe36f6daa9bf1c8c428f30e72f96470aAnders Carlsson SourceLocation BuiltinLoc, RParenLoc; 35847c50aca2fe36f6daa9bf1c8c428f30e72f96470aAnders Carlssonpublic: 35852cad900202561cdda18ea6cc51ddbf3e20e3c23aAbramo Bagnara VAArgExpr(SourceLocation BLoc, Expr* e, TypeSourceInfo *TInfo, 35862cad900202561cdda18ea6cc51ddbf3e20e3c23aAbramo Bagnara SourceLocation RPLoc, QualType t) 3587f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall : Expr(VAArgExprClass, t, VK_RValue, OK_Ordinary, 3588bebbe0d9b7568ce43a464286bee49429489ef483Douglas Gregor t->isDependentType(), false, 3589561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor (TInfo->getType()->isInstantiationDependentType() || 3590561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor e->isInstantiationDependent()), 3591bebbe0d9b7568ce43a464286bee49429489ef483Douglas Gregor (TInfo->getType()->containsUnexpandedParameterPack() || 3592bebbe0d9b7568ce43a464286bee49429489ef483Douglas Gregor e->containsUnexpandedParameterPack())), 35932cad900202561cdda18ea6cc51ddbf3e20e3c23aAbramo Bagnara Val(e), TInfo(TInfo), 35947c50aca2fe36f6daa9bf1c8c428f30e72f96470aAnders Carlsson BuiltinLoc(BLoc), 35957c50aca2fe36f6daa9bf1c8c428f30e72f96470aAnders Carlsson RParenLoc(RPLoc) { } 35961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 359774626d6ef2e194fcc911e071556660ff331eb4a8Zhongxing Xu /// \brief Create an empty __builtin_va_arg expression. 3598d3c98a02c73417689deaaa6671ea6df7f2a8a73cDouglas Gregor explicit VAArgExpr(EmptyShell Empty) : Expr(VAArgExprClass, Empty) { } 3599d3c98a02c73417689deaaa6671ea6df7f2a8a73cDouglas Gregor 36005549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek const Expr *getSubExpr() const { return cast<Expr>(Val); } 36015549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek Expr *getSubExpr() { return cast<Expr>(Val); } 3602d3c98a02c73417689deaaa6671ea6df7f2a8a73cDouglas Gregor void setSubExpr(Expr *E) { Val = E; } 3603d3c98a02c73417689deaaa6671ea6df7f2a8a73cDouglas Gregor 36042cad900202561cdda18ea6cc51ddbf3e20e3c23aAbramo Bagnara TypeSourceInfo *getWrittenTypeInfo() const { return TInfo; } 36052cad900202561cdda18ea6cc51ddbf3e20e3c23aAbramo Bagnara void setWrittenTypeInfo(TypeSourceInfo *TI) { TInfo = TI; } 36062cad900202561cdda18ea6cc51ddbf3e20e3c23aAbramo Bagnara 3607d3c98a02c73417689deaaa6671ea6df7f2a8a73cDouglas Gregor SourceLocation getBuiltinLoc() const { return BuiltinLoc; } 3608d3c98a02c73417689deaaa6671ea6df7f2a8a73cDouglas Gregor void setBuiltinLoc(SourceLocation L) { BuiltinLoc = L; } 36091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3610d3c98a02c73417689deaaa6671ea6df7f2a8a73cDouglas Gregor SourceLocation getRParenLoc() const { return RParenLoc; } 3611d3c98a02c73417689deaaa6671ea6df7f2a8a73cDouglas Gregor void setRParenLoc(SourceLocation L) { RParenLoc = L; } 3612d3c98a02c73417689deaaa6671ea6df7f2a8a73cDouglas Gregor 361365d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocStart() const LLVM_READONLY { return BuiltinLoc; } 361465d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocEnd() const LLVM_READONLY { return RParenLoc; } 361565d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen 36167c50aca2fe36f6daa9bf1c8c428f30e72f96470aAnders Carlsson static bool classof(const Stmt *T) { 36177c50aca2fe36f6daa9bf1c8c428f30e72f96470aAnders Carlsson return T->getStmtClass() == VAArgExprClass; 36187c50aca2fe36f6daa9bf1c8c428f30e72f96470aAnders Carlsson } 36191eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 36207c50aca2fe36f6daa9bf1c8c428f30e72f96470aAnders Carlsson // Iterators 362163c00d7f35fa060c0a446c9df3a4402d9c7757feJohn McCall child_range children() { return child_range(&Val, &Val+1); } 36227c50aca2fe36f6daa9bf1c8c428f30e72f96470aAnders Carlsson}; 36231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 36244c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// @brief Describes an C or C++ initializer list. 36254c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// 36264c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// InitListExpr describes an initializer list, which can be used to 36274c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// initialize objects of different types, including 36284c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// struct/class/union types, arrays, and vectors. For example: 36294c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// 36304c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// @code 36314c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// struct foo x = { 1, { 2, 3 } }; 36324c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// @endcode 3633196ef51bc4d008ec1c69851fb3b0f8d036065931Chris Lattner/// 36344c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// Prior to semantic analysis, an initializer list will represent the 36354c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// initializer list as written by the user, but will have the 36364c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// placeholder type "void". This initializer list is called the 36374c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// syntactic form of the initializer, and may contain C99 designated 36384c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// initializers (represented as DesignatedInitExprs), initializations 36394c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// of subobject members without explicit braces, and so on. Clients 36404c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// interested in the original syntax of the initializer list should 36414c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// use the syntactic form of the initializer list. 3642196ef51bc4d008ec1c69851fb3b0f8d036065931Chris Lattner/// 36434c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// After semantic analysis, the initializer list will represent the 36444c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// semantic form of the initializer, where the initializations of all 36454c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// subobjects are made explicit with nested InitListExpr nodes and 36464c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// C99 designators have been eliminated by placing the designated 36474c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// initializations into the subobject they initialize. Additionally, 36484c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// any "holes" in the initialization, where no initializer has been 36494c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// specified for a particular subobject, will be replaced with 36503498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor/// implicitly-generated ImplicitValueInitExpr expressions that 36514c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// value-initialize the subobjects. Note, however, that the 36524c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// initializer lists may still have fewer initializers than there are 36534c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// elements to initialize within the object. 3654196ef51bc4d008ec1c69851fb3b0f8d036065931Chris Lattner/// 365523700f083fb72f5c6792e253f203a43aba3cef86Abramo Bagnara/// After semantic analysis has completed, given an initializer list, 365623700f083fb72f5c6792e253f203a43aba3cef86Abramo Bagnara/// method isSemanticForm() returns true if and only if this is the 365723700f083fb72f5c6792e253f203a43aba3cef86Abramo Bagnara/// semantic form of the initializer list (note: the same AST node 365823700f083fb72f5c6792e253f203a43aba3cef86Abramo Bagnara/// may at the same time be the syntactic form). 36594c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// Given the semantic form of the initializer list, one can retrieve 366023700f083fb72f5c6792e253f203a43aba3cef86Abramo Bagnara/// the syntactic form of that initializer list (when different) 366123700f083fb72f5c6792e253f203a43aba3cef86Abramo Bagnara/// using method getSyntacticForm(); the method returns null if applied 366223700f083fb72f5c6792e253f203a43aba3cef86Abramo Bagnara/// to a initializer list which is already in syntactic form. 366323700f083fb72f5c6792e253f203a43aba3cef86Abramo Bagnara/// Similarly, given the syntactic form (i.e., an initializer list such 366423700f083fb72f5c6792e253f203a43aba3cef86Abramo Bagnara/// that isSemanticForm() returns false), one can retrieve the semantic 366523700f083fb72f5c6792e253f203a43aba3cef86Abramo Bagnara/// form using method getSemanticForm(). 366623700f083fb72f5c6792e253f203a43aba3cef86Abramo Bagnara/// Since many initializer lists have the same syntactic and semantic forms, 366723700f083fb72f5c6792e253f203a43aba3cef86Abramo Bagnara/// getSyntacticForm() may return NULL, indicating that the current 366823700f083fb72f5c6792e253f203a43aba3cef86Abramo Bagnara/// semantic initializer list also serves as its syntactic form. 366966b5a8a39088598c01a9fa6f032dc908612dc8ecAnders Carlssonclass InitListExpr : public Expr { 3670ba7bc5584b8d46f4e8deb3a9d363256908fa86eaTed Kremenek // FIXME: Eliminate this vector in favor of ASTContext allocation 3671709210feee317b8d6690dd1d15c2b74cfe55e261Ted Kremenek typedef ASTVector<Stmt *> InitExprsTy; 3672709210feee317b8d6690dd1d15c2b74cfe55e261Ted Kremenek InitExprsTy InitExprs; 367366b5a8a39088598c01a9fa6f032dc908612dc8ecAnders Carlsson SourceLocation LBraceLoc, RBraceLoc; 36741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 367523700f083fb72f5c6792e253f203a43aba3cef86Abramo Bagnara /// The alternative form of the initializer list (if it exists). 367623700f083fb72f5c6792e253f203a43aba3cef86Abramo Bagnara /// The int part of the pair stores whether this initalizer list is 367723700f083fb72f5c6792e253f203a43aba3cef86Abramo Bagnara /// in semantic form. If not null, the pointer points to: 367823700f083fb72f5c6792e253f203a43aba3cef86Abramo Bagnara /// - the syntactic form, if this is in semantic form; 367923700f083fb72f5c6792e253f203a43aba3cef86Abramo Bagnara /// - the semantic form, if this is in syntactic form. 368023700f083fb72f5c6792e253f203a43aba3cef86Abramo Bagnara llvm::PointerIntPair<InitListExpr *, 1, bool> AltForm; 36814c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 36824423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis /// \brief Either: 36834423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis /// If this initializer list initializes an array with more elements than 36844423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis /// there are initializers in the list, specifies an expression to be used 36854423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis /// for value initialization of the rest of the elements. 36864423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis /// Or 36874423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis /// If this initializer list initializes a union, specifies which 36884423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis /// field within the union will be initialized. 36894423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis llvm::PointerUnion<Expr *, FieldDecl *> ArrayFillerOrUnionFieldInit; 36900bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor 369166b5a8a39088598c01a9fa6f032dc908612dc8ecAnders Carlssonpublic: 3692709210feee317b8d6690dd1d15c2b74cfe55e261Ted Kremenek InitListExpr(ASTContext &C, SourceLocation lbraceloc, 36933b6bef9a213249c6ab6d67c07b1ac6380961be3eBenjamin Kramer ArrayRef<Expr*> initExprs, SourceLocation rbraceloc); 3694d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor 3695d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor /// \brief Build an empty initializer list. 36962a82ca255b0f99f6201a75ed52b91fc024f6e9cfArgyrios Kyrtzidis explicit InitListExpr(EmptyShell Empty) 36972a82ca255b0f99f6201a75ed52b91fc024f6e9cfArgyrios Kyrtzidis : Expr(InitListExprClass, Empty) { } 36981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3699ba7bc5584b8d46f4e8deb3a9d363256908fa86eaTed Kremenek unsigned getNumInits() const { return InitExprs.size(); } 37001eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3701aa165f8458b51c546bebff947343e1a36f3594cbDouglas Gregor /// \brief Retrieve the set of initializers. 3702aa165f8458b51c546bebff947343e1a36f3594cbDouglas Gregor Expr **getInits() { return reinterpret_cast<Expr **>(InitExprs.data()); } 3703ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 370416c5dea6c2d3e4cf529de9d9b37f6a40441acb2cChris Lattner const Expr *getInit(unsigned Init) const { 3705c5ae899b4bbf65488445316c63168079177db0edSteve Naroff assert(Init < getNumInits() && "Initializer access out of range!"); 37064c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor return cast_or_null<Expr>(InitExprs[Init]); 370766b5a8a39088598c01a9fa6f032dc908612dc8ecAnders Carlsson } 37081eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 370916c5dea6c2d3e4cf529de9d9b37f6a40441acb2cChris Lattner Expr *getInit(unsigned Init) { 3710c5ae899b4bbf65488445316c63168079177db0edSteve Naroff assert(Init < getNumInits() && "Initializer access out of range!"); 37114c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor return cast_or_null<Expr>(InitExprs[Init]); 371266b5a8a39088598c01a9fa6f032dc908612dc8ecAnders Carlsson } 37131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 37141eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump void setInit(unsigned Init, Expr *expr) { 3715c5ae899b4bbf65488445316c63168079177db0edSteve Naroff assert(Init < getNumInits() && "Initializer access out of range!"); 37169e8925e72f53a9e2c4633b6b48e965ed01702fe4Steve Naroff InitExprs[Init] = expr; 37179e8925e72f53a9e2c4633b6b48e965ed01702fe4Steve Naroff } 3718c5ae899b4bbf65488445316c63168079177db0edSteve Naroff 3719fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor /// \brief Reserve space for some number of initializers. 3720709210feee317b8d6690dd1d15c2b74cfe55e261Ted Kremenek void reserveInits(ASTContext &C, unsigned NumInits); 37211eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 37224c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor /// @brief Specify the number of initializers 37234c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor /// 37244c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor /// If there are more than @p NumInits initializers, the remaining 37254c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor /// initializers will be destroyed. If there are fewer than @p 37264c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor /// NumInits initializers, NULL expressions will be added for the 37274c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor /// unknown initializers. 37284c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor void resizeInits(ASTContext &Context, unsigned NumInits); 37294c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 37304c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor /// @brief Updates the initializer at index @p Init with the new 37314c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor /// expression @p expr, and returns the old expression at that 37324c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor /// location. 37334c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor /// 37344c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor /// When @p Init is out of range for this initializer list, the 37354c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor /// initializer list will be extended with NULL expressions to 3736fc8f0e14ad142ed811e90fbd9a30e419e301c717Chris Lattner /// accommodate the new entry. 3737709210feee317b8d6690dd1d15c2b74cfe55e261Ted Kremenek Expr *updateInit(ASTContext &C, unsigned Init, Expr *expr); 3738c5ae899b4bbf65488445316c63168079177db0edSteve Naroff 37394423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis /// \brief If this initializer list initializes an array with more elements 37404423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis /// than there are initializers in the list, specifies an expression to be 37414423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis /// used for value initialization of the rest of the elements. 37424423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis Expr *getArrayFiller() { 37434423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis return ArrayFillerOrUnionFieldInit.dyn_cast<Expr *>(); 37444423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis } 37458cad3046be06ea73ff8892d947697a21d7a440d3Peter Collingbourne const Expr *getArrayFiller() const { 37468cad3046be06ea73ff8892d947697a21d7a440d3Peter Collingbourne return const_cast<InitListExpr *>(this)->getArrayFiller(); 37478cad3046be06ea73ff8892d947697a21d7a440d3Peter Collingbourne } 37483e8dc2ac8926dfbebd8f2f6b74ceba4befccd4d2Argyrios Kyrtzidis void setArrayFiller(Expr *filler); 37494423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis 375021f77cd0c3da8a1dbaf6245cae43baf4c0b80ea4Argyrios Kyrtzidis /// \brief Return true if this is an array initializer and its array "filler" 375121f77cd0c3da8a1dbaf6245cae43baf4c0b80ea4Argyrios Kyrtzidis /// has been set. 375221f77cd0c3da8a1dbaf6245cae43baf4c0b80ea4Argyrios Kyrtzidis bool hasArrayFiller() const { return getArrayFiller(); } 375321f77cd0c3da8a1dbaf6245cae43baf4c0b80ea4Argyrios Kyrtzidis 37540bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor /// \brief If this initializes a union, specifies which field in the 37550bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor /// union to initialize. 37560bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor /// 37570bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor /// Typically, this field is the first named field within the 37580bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor /// union. However, a designated initializer can specify the 37590bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor /// initialization of a different field within the union. 37604423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis FieldDecl *getInitializedFieldInUnion() { 37614423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis return ArrayFillerOrUnionFieldInit.dyn_cast<FieldDecl *>(); 37624423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis } 37638cad3046be06ea73ff8892d947697a21d7a440d3Peter Collingbourne const FieldDecl *getInitializedFieldInUnion() const { 37648cad3046be06ea73ff8892d947697a21d7a440d3Peter Collingbourne return const_cast<InitListExpr *>(this)->getInitializedFieldInUnion(); 37658cad3046be06ea73ff8892d947697a21d7a440d3Peter Collingbourne } 37664423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis void setInitializedFieldInUnion(FieldDecl *FD) { 37674423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis ArrayFillerOrUnionFieldInit = FD; 37684423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis } 37690bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor 3770c5ae899b4bbf65488445316c63168079177db0edSteve Naroff // Explicit InitListExpr's originate from source code (and have valid source 3771c5ae899b4bbf65488445316c63168079177db0edSteve Naroff // locations). Implicit InitListExpr's are created by the semantic analyzer. 3772b3eef68111ffc220e449be96da1747998c057790Douglas Gregor bool isExplicit() { 3773b3eef68111ffc220e449be96da1747998c057790Douglas Gregor return LBraceLoc.isValid() && RBraceLoc.isValid(); 3774b3eef68111ffc220e449be96da1747998c057790Douglas Gregor } 37751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3776fe587201feaebc69e6d18858bea85c77926b6ecfRichard Smith // Is this an initializer for an array of characters, initialized by a string 3777fe587201feaebc69e6d18858bea85c77926b6ecfRichard Smith // literal or an @encode? 3778fe587201feaebc69e6d18858bea85c77926b6ecfRichard Smith bool isStringLiteralInit() const; 3779fe587201feaebc69e6d18858bea85c77926b6ecfRichard Smith 3780d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor SourceLocation getLBraceLoc() const { return LBraceLoc; } 3781d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor void setLBraceLoc(SourceLocation Loc) { LBraceLoc = Loc; } 3782d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor SourceLocation getRBraceLoc() const { return RBraceLoc; } 378387fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor void setRBraceLoc(SourceLocation Loc) { RBraceLoc = Loc; } 378487fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor 378523700f083fb72f5c6792e253f203a43aba3cef86Abramo Bagnara bool isSemanticForm() const { return AltForm.getInt(); } 378623700f083fb72f5c6792e253f203a43aba3cef86Abramo Bagnara InitListExpr *getSemanticForm() const { 378723700f083fb72f5c6792e253f203a43aba3cef86Abramo Bagnara return isSemanticForm() ? 0 : AltForm.getPointer(); 378823700f083fb72f5c6792e253f203a43aba3cef86Abramo Bagnara } 378923700f083fb72f5c6792e253f203a43aba3cef86Abramo Bagnara InitListExpr *getSyntacticForm() const { 379023700f083fb72f5c6792e253f203a43aba3cef86Abramo Bagnara return isSemanticForm() ? AltForm.getPointer() : 0; 379123700f083fb72f5c6792e253f203a43aba3cef86Abramo Bagnara } 379223700f083fb72f5c6792e253f203a43aba3cef86Abramo Bagnara 379323700f083fb72f5c6792e253f203a43aba3cef86Abramo Bagnara void setSyntacticForm(InitListExpr *Init) { 379423700f083fb72f5c6792e253f203a43aba3cef86Abramo Bagnara AltForm.setPointer(Init); 379523700f083fb72f5c6792e253f203a43aba3cef86Abramo Bagnara AltForm.setInt(true); 379623700f083fb72f5c6792e253f203a43aba3cef86Abramo Bagnara Init->AltForm.setPointer(this); 379723700f083fb72f5c6792e253f203a43aba3cef86Abramo Bagnara Init->AltForm.setInt(false); 379823700f083fb72f5c6792e253f203a43aba3cef86Abramo Bagnara } 37994c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 380032cf1f27ae8620e7b79bb4e81a067187c0aab7aeSebastian Redl bool hadArrayRangeDesignator() const { 380132cf1f27ae8620e7b79bb4e81a067187c0aab7aeSebastian Redl return InitListExprBits.HadArrayRangeDesignator != 0; 380232cf1f27ae8620e7b79bb4e81a067187c0aab7aeSebastian Redl } 38031eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump void sawArrayRangeDesignator(bool ARD = true) { 380432cf1f27ae8620e7b79bb4e81a067187c0aab7aeSebastian Redl InitListExprBits.HadArrayRangeDesignator = ARD; 380532cf1f27ae8620e7b79bb4e81a067187c0aab7aeSebastian Redl } 380632cf1f27ae8620e7b79bb4e81a067187c0aab7aeSebastian Redl 380765d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocStart() const LLVM_READONLY; 380865d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocEnd() const LLVM_READONLY; 3809c4ba51f365a3cd3374b3ef87272a9b3e517cd5d3Ted Kremenek 381066b5a8a39088598c01a9fa6f032dc908612dc8ecAnders Carlsson static bool classof(const Stmt *T) { 38111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return T->getStmtClass() == InitListExprClass; 381266b5a8a39088598c01a9fa6f032dc908612dc8ecAnders Carlsson } 38131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 381466b5a8a39088598c01a9fa6f032dc908612dc8ecAnders Carlsson // Iterators 381563c00d7f35fa060c0a446c9df3a4402d9c7757feJohn McCall child_range children() { 381663c00d7f35fa060c0a446c9df3a4402d9c7757feJohn McCall if (InitExprs.empty()) return child_range(); 381763c00d7f35fa060c0a446c9df3a4402d9c7757feJohn McCall return child_range(&InitExprs[0], &InitExprs[0] + InitExprs.size()); 381863c00d7f35fa060c0a446c9df3a4402d9c7757feJohn McCall } 38191eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3820709210feee317b8d6690dd1d15c2b74cfe55e261Ted Kremenek typedef InitExprsTy::iterator iterator; 38218111a6150cb68a238d55a31f9f4f90869a43f988Zhongxing Xu typedef InitExprsTy::const_iterator const_iterator; 3822709210feee317b8d6690dd1d15c2b74cfe55e261Ted Kremenek typedef InitExprsTy::reverse_iterator reverse_iterator; 38238111a6150cb68a238d55a31f9f4f90869a43f988Zhongxing Xu typedef InitExprsTy::const_reverse_iterator const_reverse_iterator; 38241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3825ba7bc5584b8d46f4e8deb3a9d363256908fa86eaTed Kremenek iterator begin() { return InitExprs.begin(); } 38268111a6150cb68a238d55a31f9f4f90869a43f988Zhongxing Xu const_iterator begin() const { return InitExprs.begin(); } 3827ba7bc5584b8d46f4e8deb3a9d363256908fa86eaTed Kremenek iterator end() { return InitExprs.end(); } 38288111a6150cb68a238d55a31f9f4f90869a43f988Zhongxing Xu const_iterator end() const { return InitExprs.end(); } 3829ba7bc5584b8d46f4e8deb3a9d363256908fa86eaTed Kremenek reverse_iterator rbegin() { return InitExprs.rbegin(); } 38308111a6150cb68a238d55a31f9f4f90869a43f988Zhongxing Xu const_reverse_iterator rbegin() const { return InitExprs.rbegin(); } 3831ba7bc5584b8d46f4e8deb3a9d363256908fa86eaTed Kremenek reverse_iterator rend() { return InitExprs.rend(); } 38328111a6150cb68a238d55a31f9f4f90869a43f988Zhongxing Xu const_reverse_iterator rend() const { return InitExprs.rend(); } 38334423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis 38344423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis friend class ASTStmtReader; 38354423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis friend class ASTStmtWriter; 383666b5a8a39088598c01a9fa6f032dc908612dc8ecAnders Carlsson}; 383766b5a8a39088598c01a9fa6f032dc908612dc8ecAnders Carlsson 383805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// @brief Represents a C99 designated initializer expression. 383905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// 384005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// A designated initializer expression (C99 6.7.8) contains one or 384105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// more designators (which can be field designators, array 384205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// designators, or GNU array-range designators) followed by an 384305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// expression that initializes the field or element(s) that the 384405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// designators refer to. For example, given: 38451eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// 384605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// @code 384705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// struct point { 384805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// double x; 384905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// double y; 385005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// }; 385105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// struct point ptarray[10] = { [2].y = 1.0, [2].x = 2.0, [0].x = 1.0 }; 385205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// @endcode 385305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// 385405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// The InitListExpr contains three DesignatedInitExprs, the first of 385505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// which covers @c [2].y=1.0. This DesignatedInitExpr will have two 385605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// designators, one array designator for @c [2] followed by one field 385705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// designator for @c .y. The initalization expression will be 1.0. 385805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregorclass DesignatedInitExpr : public Expr { 3859ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregorpublic: 3860ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor /// \brief Forward declaration of the Designator class. 3861ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor class Designator; 3862ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor 3863ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregorprivate: 386405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor /// The location of the '=' or ':' prior to the actual initializer 386505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor /// expression. 386605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor SourceLocation EqualOrColonLoc; 386705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 3868eeae8f072748affce25ab4064982626361293390Douglas Gregor /// Whether this designated initializer used the GNU deprecated 386905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor /// syntax rather than the C99 '=' syntax. 3870eeae8f072748affce25ab4064982626361293390Douglas Gregor bool GNUSyntax : 1; 387105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 387205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor /// The number of designators in this initializer expression. 387305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor unsigned NumDesignators : 15; 387405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 387505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor /// The number of subexpressions of this initializer expression, 387605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor /// which contains both the initializer and any additional 387705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor /// expressions used by array and array-range designators. 387805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor unsigned NumSubExprs : 16; 387905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 3880a72c352e4950cb487942427550777378b68dc078Benjamin Kramer /// \brief The designators in this designated initialization 3881a72c352e4950cb487942427550777378b68dc078Benjamin Kramer /// expression. 3882a72c352e4950cb487942427550777378b68dc078Benjamin Kramer Designator *Designators; 3883a72c352e4950cb487942427550777378b68dc078Benjamin Kramer 3884ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor 3885319d57f21600dd2c4d52ccc27bd12ce260b174e7Douglas Gregor DesignatedInitExpr(ASTContext &C, QualType Ty, unsigned NumDesignators, 3886ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor const Designator *Designators, 3887eeae8f072748affce25ab4064982626361293390Douglas Gregor SourceLocation EqualOrColonLoc, bool GNUSyntax, 38883b6bef9a213249c6ab6d67c07b1ac6380961be3eBenjamin Kramer ArrayRef<Expr*> IndexExprs, Expr *Init); 388905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 3890d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor explicit DesignatedInitExpr(unsigned NumSubExprs) 3891d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor : Expr(DesignatedInitExprClass, EmptyShell()), 3892a72c352e4950cb487942427550777378b68dc078Benjamin Kramer NumDesignators(0), NumSubExprs(NumSubExprs), Designators(0) { } 3893d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor 389405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregorpublic: 389505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor /// A field designator, e.g., ".x". 389605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor struct FieldDesignator { 389705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor /// Refers to the field that is being initialized. The low bit 389805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor /// of this field determines whether this is actually a pointer 389905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor /// to an IdentifierInfo (if 1) or a FieldDecl (if 0). When 390005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor /// initially constructed, a field designator will store an 390105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor /// IdentifierInfo*. After semantic analysis has resolved that 390205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor /// name, the field designator will instead store a FieldDecl*. 390305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor uintptr_t NameOrField; 39041eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 390505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor /// The location of the '.' in the designated initializer. 390605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor unsigned DotLoc; 39071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 390805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor /// The location of the field name in the designated initializer. 390905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor unsigned FieldLoc; 391005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor }; 391105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 391205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor /// An array or GNU array-range designator, e.g., "[9]" or "[10..15]". 391305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor struct ArrayOrRangeDesignator { 391405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor /// Location of the first index expression within the designated 391505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor /// initializer expression's list of subexpressions. 391605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor unsigned Index; 391705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor /// The location of the '[' starting the array range designator. 391805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor unsigned LBracketLoc; 391905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor /// The location of the ellipsis separating the start and end 392005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor /// indices. Only valid for GNU array-range designators. 392105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor unsigned EllipsisLoc; 392205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor /// The location of the ']' terminating the array range designator. 39231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump unsigned RBracketLoc; 392405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor }; 392505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 392605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor /// @brief Represents a single C99 designator. 392705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor /// 392805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor /// @todo This class is infuriatingly similar to clang::Designator, 392905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor /// but minor differences (storing indices vs. storing pointers) 393005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor /// keep us from reusing it. Try harder, later, to rectify these 393105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor /// differences. 393205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor class Designator { 393305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor /// @brief The kind of designator this describes. 393405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor enum { 393505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor FieldDesignator, 393605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor ArrayDesignator, 393705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor ArrayRangeDesignator 393805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } Kind; 393905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 394005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor union { 394105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor /// A field designator, e.g., ".x". 394205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor struct FieldDesignator Field; 394305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor /// An array or GNU array-range designator, e.g., "[9]" or "[10..15]". 394405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor struct ArrayOrRangeDesignator ArrayOrRange; 394505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor }; 394605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor friend class DesignatedInitExpr; 394705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 394805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor public: 3949ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor Designator() {} 3950ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor 395105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor /// @brief Initializes a field designator. 39521eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Designator(const IdentifierInfo *FieldName, SourceLocation DotLoc, 39531eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SourceLocation FieldLoc) 395405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor : Kind(FieldDesignator) { 395505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Field.NameOrField = reinterpret_cast<uintptr_t>(FieldName) | 0x01; 395605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Field.DotLoc = DotLoc.getRawEncoding(); 395705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Field.FieldLoc = FieldLoc.getRawEncoding(); 395805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 395905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 396005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor /// @brief Initializes an array designator. 39611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Designator(unsigned Index, SourceLocation LBracketLoc, 396205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor SourceLocation RBracketLoc) 396305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor : Kind(ArrayDesignator) { 396405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor ArrayOrRange.Index = Index; 396505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor ArrayOrRange.LBracketLoc = LBracketLoc.getRawEncoding(); 396605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor ArrayOrRange.EllipsisLoc = SourceLocation().getRawEncoding(); 396705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor ArrayOrRange.RBracketLoc = RBracketLoc.getRawEncoding(); 396805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 396905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 397005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor /// @brief Initializes a GNU array-range designator. 39711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Designator(unsigned Index, SourceLocation LBracketLoc, 397205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor SourceLocation EllipsisLoc, SourceLocation RBracketLoc) 397305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor : Kind(ArrayRangeDesignator) { 397405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor ArrayOrRange.Index = Index; 397505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor ArrayOrRange.LBracketLoc = LBracketLoc.getRawEncoding(); 397605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor ArrayOrRange.EllipsisLoc = EllipsisLoc.getRawEncoding(); 397705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor ArrayOrRange.RBracketLoc = RBracketLoc.getRawEncoding(); 397805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 397905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 398005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor bool isFieldDesignator() const { return Kind == FieldDesignator; } 398105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor bool isArrayDesignator() const { return Kind == ArrayDesignator; } 398205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor bool isArrayRangeDesignator() const { return Kind == ArrayRangeDesignator; } 398305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 3984b11382497a923b0d7009e85a1d8eb7bf93ec6d0dChandler Carruth IdentifierInfo *getFieldName() const; 398505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 3986b11382497a923b0d7009e85a1d8eb7bf93ec6d0dChandler Carruth FieldDecl *getField() const { 398705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor assert(Kind == FieldDesignator && "Only valid on a field designator"); 398805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor if (Field.NameOrField & 0x01) 398905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor return 0; 399005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor else 399105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor return reinterpret_cast<FieldDecl *>(Field.NameOrField); 399205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 399305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 399405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor void setField(FieldDecl *FD) { 399505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor assert(Kind == FieldDesignator && "Only valid on a field designator"); 399605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Field.NameOrField = reinterpret_cast<uintptr_t>(FD); 399705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 399805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 399987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor SourceLocation getDotLoc() const { 400087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor assert(Kind == FieldDesignator && "Only valid on a field designator"); 400187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor return SourceLocation::getFromRawEncoding(Field.DotLoc); 400287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 400387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor 400405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor SourceLocation getFieldLoc() const { 400505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor assert(Kind == FieldDesignator && "Only valid on a field designator"); 400605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor return SourceLocation::getFromRawEncoding(Field.FieldLoc); 400705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 400805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 400905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor SourceLocation getLBracketLoc() const { 401005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor assert((Kind == ArrayDesignator || Kind == ArrayRangeDesignator) && 401105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor "Only valid on an array or array-range designator"); 401205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor return SourceLocation::getFromRawEncoding(ArrayOrRange.LBracketLoc); 401305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 401405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 401505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor SourceLocation getRBracketLoc() const { 401605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor assert((Kind == ArrayDesignator || Kind == ArrayRangeDesignator) && 401705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor "Only valid on an array or array-range designator"); 401805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor return SourceLocation::getFromRawEncoding(ArrayOrRange.RBracketLoc); 401905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 402005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 402105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor SourceLocation getEllipsisLoc() const { 402205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor assert(Kind == ArrayRangeDesignator && 402305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor "Only valid on an array-range designator"); 402405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor return SourceLocation::getFromRawEncoding(ArrayOrRange.EllipsisLoc); 402505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 40264c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 4027d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor unsigned getFirstExprIndex() const { 4028d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor assert((Kind == ArrayDesignator || Kind == ArrayRangeDesignator) && 4029d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor "Only valid on an array or array-range designator"); 4030d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor return ArrayOrRange.Index; 4031d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor } 4032d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor 403365d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocStart() const LLVM_READONLY { 40344c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor if (Kind == FieldDesignator) 40354c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor return getDotLoc().isInvalid()? getFieldLoc() : getDotLoc(); 40364c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor else 40374c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor return getLBracketLoc(); 40384c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor } 403965d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocEnd() const LLVM_READONLY { 404024f4674e697fb53587f0e8485e9c6592f7021ef2Abramo Bagnara return Kind == FieldDesignator ? getFieldLoc() : getRBracketLoc(); 404124f4674e697fb53587f0e8485e9c6592f7021ef2Abramo Bagnara } 4042aa49a7d70e58dac2aeb40664ba16d2ea571b8c95Daniel Dunbar SourceRange getSourceRange() const LLVM_READONLY { 404365d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen return SourceRange(getLocStart(), getLocEnd()); 404424f4674e697fb53587f0e8485e9c6592f7021ef2Abramo Bagnara } 404505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor }; 404605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 40471eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump static DesignatedInitExpr *Create(ASTContext &C, Designator *Designators, 404805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor unsigned NumDesignators, 40493b6bef9a213249c6ab6d67c07b1ac6380961be3eBenjamin Kramer ArrayRef<Expr*> IndexExprs, 405005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor SourceLocation EqualOrColonLoc, 4051eeae8f072748affce25ab4064982626361293390Douglas Gregor bool GNUSyntax, Expr *Init); 405205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 4053d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor static DesignatedInitExpr *CreateEmpty(ASTContext &C, unsigned NumIndexExprs); 4054d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor 405505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor /// @brief Returns the number of designators in this initializer. 405605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor unsigned size() const { return NumDesignators; } 405705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 405805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // Iterator access to the designators. 4059b11382497a923b0d7009e85a1d8eb7bf93ec6d0dChandler Carruth typedef Designator *designators_iterator; 4060ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor designators_iterator designators_begin() { return Designators; } 40611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump designators_iterator designators_end() { 40621eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return Designators + NumDesignators; 4063ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor } 406405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 4065b11382497a923b0d7009e85a1d8eb7bf93ec6d0dChandler Carruth typedef const Designator *const_designators_iterator; 4066b11382497a923b0d7009e85a1d8eb7bf93ec6d0dChandler Carruth const_designators_iterator designators_begin() const { return Designators; } 4067b11382497a923b0d7009e85a1d8eb7bf93ec6d0dChandler Carruth const_designators_iterator designators_end() const { 4068b11382497a923b0d7009e85a1d8eb7bf93ec6d0dChandler Carruth return Designators + NumDesignators; 4069b11382497a923b0d7009e85a1d8eb7bf93ec6d0dChandler Carruth } 4070b11382497a923b0d7009e85a1d8eb7bf93ec6d0dChandler Carruth 4071cdba6595a61a7bd31f504260abf63c900a759d0fTed Kremenek typedef std::reverse_iterator<designators_iterator> 4072cdba6595a61a7bd31f504260abf63c900a759d0fTed Kremenek reverse_designators_iterator; 4073cdba6595a61a7bd31f504260abf63c900a759d0fTed Kremenek reverse_designators_iterator designators_rbegin() { 4074cdba6595a61a7bd31f504260abf63c900a759d0fTed Kremenek return reverse_designators_iterator(designators_end()); 4075cdba6595a61a7bd31f504260abf63c900a759d0fTed Kremenek } 4076cdba6595a61a7bd31f504260abf63c900a759d0fTed Kremenek reverse_designators_iterator designators_rend() { 4077cdba6595a61a7bd31f504260abf63c900a759d0fTed Kremenek return reverse_designators_iterator(designators_begin()); 4078cdba6595a61a7bd31f504260abf63c900a759d0fTed Kremenek } 4079cdba6595a61a7bd31f504260abf63c900a759d0fTed Kremenek 4080b11382497a923b0d7009e85a1d8eb7bf93ec6d0dChandler Carruth typedef std::reverse_iterator<const_designators_iterator> 4081b11382497a923b0d7009e85a1d8eb7bf93ec6d0dChandler Carruth const_reverse_designators_iterator; 4082b11382497a923b0d7009e85a1d8eb7bf93ec6d0dChandler Carruth const_reverse_designators_iterator designators_rbegin() const { 4083b11382497a923b0d7009e85a1d8eb7bf93ec6d0dChandler Carruth return const_reverse_designators_iterator(designators_end()); 4084b11382497a923b0d7009e85a1d8eb7bf93ec6d0dChandler Carruth } 4085b11382497a923b0d7009e85a1d8eb7bf93ec6d0dChandler Carruth const_reverse_designators_iterator designators_rend() const { 4086b11382497a923b0d7009e85a1d8eb7bf93ec6d0dChandler Carruth return const_reverse_designators_iterator(designators_begin()); 4087b11382497a923b0d7009e85a1d8eb7bf93ec6d0dChandler Carruth } 4088b11382497a923b0d7009e85a1d8eb7bf93ec6d0dChandler Carruth 4089711997184366d584c9c437102cae1e9d9927b986Douglas Gregor Designator *getDesignator(unsigned Idx) { return &designators_begin()[Idx]; } 4090711997184366d584c9c437102cae1e9d9927b986Douglas Gregor 4091ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie void setDesignators(ASTContext &C, const Designator *Desigs, 4092319d57f21600dd2c4d52ccc27bd12ce260b174e7Douglas Gregor unsigned NumDesigs); 4093d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor 4094d615f88e3c24f91a65c25a4f7e66e0f97b18cc15Dmitri Gribenko Expr *getArrayIndex(const Designator &D) const; 4095d615f88e3c24f91a65c25a4f7e66e0f97b18cc15Dmitri Gribenko Expr *getArrayRangeStart(const Designator &D) const; 4096d615f88e3c24f91a65c25a4f7e66e0f97b18cc15Dmitri Gribenko Expr *getArrayRangeEnd(const Designator &D) const; 409705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 409805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor /// @brief Retrieve the location of the '=' that precedes the 409905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor /// initializer value itself, if present. 410005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor SourceLocation getEqualOrColonLoc() const { return EqualOrColonLoc; } 4101d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor void setEqualOrColonLoc(SourceLocation L) { EqualOrColonLoc = L; } 410205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 410305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor /// @brief Determines whether this designated initializer used the 4104eeae8f072748affce25ab4064982626361293390Douglas Gregor /// deprecated GNU syntax for designated initializers. 4105eeae8f072748affce25ab4064982626361293390Douglas Gregor bool usesGNUSyntax() const { return GNUSyntax; } 4106d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor void setGNUSyntax(bool GNU) { GNUSyntax = GNU; } 410705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 410805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor /// @brief Retrieve the initializer value. 41091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Expr *getInit() const { 411005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor return cast<Expr>(*const_cast<DesignatedInitExpr*>(this)->child_begin()); 411105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 411205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 411305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor void setInit(Expr *init) { 411405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor *child_begin() = init; 411505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 411605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 4117d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor /// \brief Retrieve the total number of subexpressions in this 4118d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor /// designated initializer expression, including the actual 4119d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor /// initialized value and any expressions that occur within array 4120d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor /// and array-range designators. 4121d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor unsigned getNumSubExprs() const { return NumSubExprs; } 4122d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor 4123d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor Expr *getSubExpr(unsigned Idx) { 4124d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor assert(Idx < NumSubExprs && "Subscript out of range"); 4125d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor char* Ptr = static_cast<char*>(static_cast<void *>(this)); 4126d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor Ptr += sizeof(DesignatedInitExpr); 4127d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor return reinterpret_cast<Expr**>(reinterpret_cast<void**>(Ptr))[Idx]; 4128d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor } 4129d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor 4130d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor void setSubExpr(unsigned Idx, Expr *E) { 4131d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor assert(Idx < NumSubExprs && "Subscript out of range"); 4132d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor char* Ptr = static_cast<char*>(static_cast<void *>(this)); 4133d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor Ptr += sizeof(DesignatedInitExpr); 4134d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor reinterpret_cast<Expr**>(reinterpret_cast<void**>(Ptr))[Idx] = E; 4135d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor } 4136d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor 4137ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor /// \brief Replaces the designator at index @p Idx with the series 4138ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor /// of designators in [First, Last). 4139319d57f21600dd2c4d52ccc27bd12ce260b174e7Douglas Gregor void ExpandDesignator(ASTContext &C, unsigned Idx, const Designator *First, 4140ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor const Designator *Last); 4141ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor 414224f4674e697fb53587f0e8485e9c6592f7021ef2Abramo Bagnara SourceRange getDesignatorsSourceRange() const; 414324f4674e697fb53587f0e8485e9c6592f7021ef2Abramo Bagnara 414465d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocStart() const LLVM_READONLY; 414565d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocEnd() const LLVM_READONLY; 414605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 414705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor static bool classof(const Stmt *T) { 41481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return T->getStmtClass() == DesignatedInitExprClass; 414905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 415005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 415105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // Iterators 415263c00d7f35fa060c0a446c9df3a4402d9c7757feJohn McCall child_range children() { 415363c00d7f35fa060c0a446c9df3a4402d9c7757feJohn McCall Stmt **begin = reinterpret_cast<Stmt**>(this + 1); 415463c00d7f35fa060c0a446c9df3a4402d9c7757feJohn McCall return child_range(begin, begin + NumSubExprs); 415563c00d7f35fa060c0a446c9df3a4402d9c7757feJohn McCall } 41563498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor}; 41573498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor 41583498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor/// \brief Represents an implicitly-generated value initialization of 41593498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor/// an object of a given type. 41603498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor/// 41611a51b4a11b7db25cac2134249711ecaaf9d1c0a8Douglas Gregor/// Implicit value initializations occur within semantic initializer 41621a51b4a11b7db25cac2134249711ecaaf9d1c0a8Douglas Gregor/// list expressions (InitListExpr) as placeholders for subobject 41633498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor/// initializations not explicitly specified by the user. 41641a51b4a11b7db25cac2134249711ecaaf9d1c0a8Douglas Gregor/// 41651a51b4a11b7db25cac2134249711ecaaf9d1c0a8Douglas Gregor/// \see InitListExpr 41661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumpclass ImplicitValueInitExpr : public Expr { 41673498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregorpublic: 41681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump explicit ImplicitValueInitExpr(QualType ty) 4169f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall : Expr(ImplicitValueInitExprClass, ty, VK_RValue, OK_Ordinary, 4170561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor false, false, ty->isInstantiationDependentType(), false) { } 41713498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor 4172d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor /// \brief Construct an empty implicit value initialization. 4173d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor explicit ImplicitValueInitExpr(EmptyShell Empty) 4174d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor : Expr(ImplicitValueInitExprClass, Empty) { } 4175d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor 41761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump static bool classof(const Stmt *T) { 41773498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor return T->getStmtClass() == ImplicitValueInitExprClass; 41783498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor } 41793498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor 418065d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocStart() const LLVM_READONLY { return SourceLocation(); } 418165d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocEnd() const LLVM_READONLY { return SourceLocation(); } 41823498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor 41833498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor // Iterators 418463c00d7f35fa060c0a446c9df3a4402d9c7757feJohn McCall child_range children() { return child_range(); } 418505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor}; 418605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 41872ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman 41882ef13e5abef0570a9f567b4671367275c05d4d34Nate Begemanclass ParenListExpr : public Expr { 41892ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman Stmt **Exprs; 41902ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman unsigned NumExprs; 41912ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman SourceLocation LParenLoc, RParenLoc; 41922ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman 41932ef13e5abef0570a9f567b4671367275c05d4d34Nate Begemanpublic: 41943b6bef9a213249c6ab6d67c07b1ac6380961be3eBenjamin Kramer ParenListExpr(ASTContext& C, SourceLocation lparenloc, ArrayRef<Expr*> exprs, 41953b6bef9a213249c6ab6d67c07b1ac6380961be3eBenjamin Kramer SourceLocation rparenloc); 41962ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman 41972ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman /// \brief Build an empty paren list. 419837bdfe284ad365f753741d1d89c078c148b3f4afArgyrios Kyrtzidis explicit ParenListExpr(EmptyShell Empty) : Expr(ParenListExprClass, Empty) { } 41991eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 42002ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman unsigned getNumExprs() const { return NumExprs; } 42011eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 42021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const Expr* getExpr(unsigned Init) const { 42032ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman assert(Init < getNumExprs() && "Initializer access out of range!"); 42042ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman return cast_or_null<Expr>(Exprs[Init]); 42052ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman } 42061eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 42071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Expr* getExpr(unsigned Init) { 42082ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman assert(Init < getNumExprs() && "Initializer access out of range!"); 42092ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman return cast_or_null<Expr>(Exprs[Init]); 42102ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman } 42112ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman 421283ddad3ab513f5d73698cf9fbeb4ed3f011bc3b9Douglas Gregor Expr **getExprs() { return reinterpret_cast<Expr **>(Exprs); } 42131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 42142ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman SourceLocation getLParenLoc() const { return LParenLoc; } 42152ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman SourceLocation getRParenLoc() const { return RParenLoc; } 42162ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman 421765d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocStart() const LLVM_READONLY { return LParenLoc; } 421865d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocEnd() const LLVM_READONLY { return RParenLoc; } 421965d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen 42202ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman static bool classof(const Stmt *T) { 42211eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return T->getStmtClass() == ParenListExprClass; 42222ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman } 42231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 42242ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman // Iterators 422563c00d7f35fa060c0a446c9df3a4402d9c7757feJohn McCall child_range children() { 422663c00d7f35fa060c0a446c9df3a4402d9c7757feJohn McCall return child_range(&Exprs[0], &Exprs[0]+NumExprs); 422763c00d7f35fa060c0a446c9df3a4402d9c7757feJohn McCall } 422837bdfe284ad365f753741d1d89c078c148b3f4afArgyrios Kyrtzidis 422960adf4acf40b72227740bf966fb87eebddff3f37Sebastian Redl friend class ASTStmtReader; 42303397c5570369f19b2d6c52e898f708d75ceede1fSebastian Redl friend class ASTStmtWriter; 42312ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman}; 42322ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman 42331eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4234ffbe9b9c64ab2e94b9d48ec56e511f75826fc80aBenjamin Kramer/// \brief Represents a C11 generic selection. 4235f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne/// 4236ffbe9b9c64ab2e94b9d48ec56e511f75826fc80aBenjamin Kramer/// A generic selection (C11 6.5.1.1) contains an unevaluated controlling 4237f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne/// expression, followed by one or more generic associations. Each generic 4238f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne/// association specifies a type name and an expression, or "default" and an 4239f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne/// expression (in which case it is known as a default generic association). 4240f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne/// The type and value of the generic selection are identical to those of its 4241f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne/// result expression, which is defined as the expression in the generic 4242f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne/// association with a type name that is compatible with the type of the 4243f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne/// controlling expression, or the expression in the default generic association 4244f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne/// if no types are compatible. For example: 4245f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne/// 4246f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne/// @code 4247f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne/// _Generic(X, double: 1, float: 2, default: 3) 4248f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne/// @endcode 4249f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne/// 4250f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne/// The above expression evaluates to 1 if 1.0 is substituted for X, 2 if 1.0f 4251f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne/// or 3 if "hello". 4252f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne/// 4253f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne/// As an extension, generic selections are allowed in C++, where the following 4254f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne/// additional semantics apply: 4255f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne/// 4256f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne/// Any generic selection whose controlling expression is type-dependent or 4257f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne/// which names a dependent type in its association list is result-dependent, 4258f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne/// which means that the choice of result expression is dependent. 4259f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne/// Result-dependent generic associations are both type- and value-dependent. 4260f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourneclass GenericSelectionExpr : public Expr { 4261f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne enum { CONTROLLING, END_EXPR }; 4262f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne TypeSourceInfo **AssocTypes; 4263f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne Stmt **SubExprs; 4264f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne unsigned NumAssocs, ResultIndex; 4265f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne SourceLocation GenericLoc, DefaultLoc, RParenLoc; 4266f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne 4267f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbournepublic: 4268f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne GenericSelectionExpr(ASTContext &Context, 4269f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne SourceLocation GenericLoc, Expr *ControllingExpr, 42703b6bef9a213249c6ab6d67c07b1ac6380961be3eBenjamin Kramer ArrayRef<TypeSourceInfo*> AssocTypes, 42713b6bef9a213249c6ab6d67c07b1ac6380961be3eBenjamin Kramer ArrayRef<Expr*> AssocExprs, 42723b6bef9a213249c6ab6d67c07b1ac6380961be3eBenjamin Kramer SourceLocation DefaultLoc, SourceLocation RParenLoc, 4273f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne bool ContainsUnexpandedParameterPack, 4274f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne unsigned ResultIndex); 4275f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne 4276f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne /// This constructor is used in the result-dependent case. 4277f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne GenericSelectionExpr(ASTContext &Context, 4278f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne SourceLocation GenericLoc, Expr *ControllingExpr, 42793b6bef9a213249c6ab6d67c07b1ac6380961be3eBenjamin Kramer ArrayRef<TypeSourceInfo*> AssocTypes, 42803b6bef9a213249c6ab6d67c07b1ac6380961be3eBenjamin Kramer ArrayRef<Expr*> AssocExprs, 42813b6bef9a213249c6ab6d67c07b1ac6380961be3eBenjamin Kramer SourceLocation DefaultLoc, SourceLocation RParenLoc, 4282f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne bool ContainsUnexpandedParameterPack); 4283f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne 4284f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne explicit GenericSelectionExpr(EmptyShell Empty) 4285f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne : Expr(GenericSelectionExprClass, Empty) { } 4286f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne 4287f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne unsigned getNumAssocs() const { return NumAssocs; } 4288f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne 4289f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne SourceLocation getGenericLoc() const { return GenericLoc; } 4290f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne SourceLocation getDefaultLoc() const { return DefaultLoc; } 4291f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne SourceLocation getRParenLoc() const { return RParenLoc; } 4292f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne 4293f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne const Expr *getAssocExpr(unsigned i) const { 4294f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne return cast<Expr>(SubExprs[END_EXPR+i]); 4295f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne } 4296f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne Expr *getAssocExpr(unsigned i) { return cast<Expr>(SubExprs[END_EXPR+i]); } 4297f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne 4298f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne const TypeSourceInfo *getAssocTypeSourceInfo(unsigned i) const { 4299f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne return AssocTypes[i]; 4300f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne } 4301f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne TypeSourceInfo *getAssocTypeSourceInfo(unsigned i) { return AssocTypes[i]; } 4302f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne 4303f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne QualType getAssocType(unsigned i) const { 4304f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne if (const TypeSourceInfo *TS = getAssocTypeSourceInfo(i)) 4305f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne return TS->getType(); 4306f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne else 4307f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne return QualType(); 4308f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne } 4309f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne 4310f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne const Expr *getControllingExpr() const { 4311f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne return cast<Expr>(SubExprs[CONTROLLING]); 4312f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne } 4313f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne Expr *getControllingExpr() { return cast<Expr>(SubExprs[CONTROLLING]); } 4314f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne 4315f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne /// Whether this generic selection is result-dependent. 4316f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne bool isResultDependent() const { return ResultIndex == -1U; } 4317f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne 4318f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne /// The zero-based index of the result expression's generic association in 4319f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne /// the generic selection's association list. Defined only if the 4320f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne /// generic selection is not result-dependent. 4321f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne unsigned getResultIndex() const { 4322f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne assert(!isResultDependent() && "Generic selection is result-dependent"); 4323f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne return ResultIndex; 4324f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne } 4325f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne 4326f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne /// The generic selection's result expression. Defined only if the 4327f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne /// generic selection is not result-dependent. 4328f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne const Expr *getResultExpr() const { return getAssocExpr(getResultIndex()); } 4329f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne Expr *getResultExpr() { return getAssocExpr(getResultIndex()); } 4330f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne 433165d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocStart() const LLVM_READONLY { return GenericLoc; } 433265d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocEnd() const LLVM_READONLY { return RParenLoc; } 433365d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen 4334f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne static bool classof(const Stmt *T) { 4335f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne return T->getStmtClass() == GenericSelectionExprClass; 4336f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne } 4337f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne 4338f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne child_range children() { 4339f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne return child_range(SubExprs, SubExprs+END_EXPR+NumAssocs); 4340f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne } 4341f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne 4342f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne friend class ASTStmtReader; 4343f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne}; 4344f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne 43454eb206bebcdab28ababe8df55c6185cec2cdc071Steve Naroff//===----------------------------------------------------------------------===// 43464eb206bebcdab28ababe8df55c6185cec2cdc071Steve Naroff// Clang Extensions 43474eb206bebcdab28ababe8df55c6185cec2cdc071Steve Naroff//===----------------------------------------------------------------------===// 43484eb206bebcdab28ababe8df55c6185cec2cdc071Steve Naroff 4349a09f585a7fdbb01b4bf9de3679fd37005379ca66Chris Lattner 4350a09f585a7fdbb01b4bf9de3679fd37005379ca66Chris Lattner/// ExtVectorElementExpr - This represents access to specific elements of a 4351a09f585a7fdbb01b4bf9de3679fd37005379ca66Chris Lattner/// vector, and may occur on the left hand side or right hand side. For example 4352a09f585a7fdbb01b4bf9de3679fd37005379ca66Chris Lattner/// the following is legal: "V.xy = V.zw" if V is a 4 element extended vector. 4353a09f585a7fdbb01b4bf9de3679fd37005379ca66Chris Lattner/// 435473525de7fd9bdd534382dc89a24f1f76db3e04b9Chris Lattner/// Note that the base may have either vector or pointer to vector type, just 435573525de7fd9bdd534382dc89a24f1f76db3e04b9Chris Lattner/// like a struct field reference. 435673525de7fd9bdd534382dc89a24f1f76db3e04b9Chris Lattner/// 4357a09f585a7fdbb01b4bf9de3679fd37005379ca66Chris Lattnerclass ExtVectorElementExpr : public Expr { 4358a09f585a7fdbb01b4bf9de3679fd37005379ca66Chris Lattner Stmt *Base; 4359d3c98a02c73417689deaaa6671ea6df7f2a8a73cDouglas Gregor IdentifierInfo *Accessor; 4360a09f585a7fdbb01b4bf9de3679fd37005379ca66Chris Lattner SourceLocation AccessorLoc; 4361a09f585a7fdbb01b4bf9de3679fd37005379ca66Chris Lattnerpublic: 4362f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall ExtVectorElementExpr(QualType ty, ExprValueKind VK, Expr *base, 4363f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall IdentifierInfo &accessor, SourceLocation loc) 43640943168ac126b8047f30f6bd215fbe7db14d61baJohn McCall : Expr(ExtVectorElementExprClass, ty, VK, 43650943168ac126b8047f30f6bd215fbe7db14d61baJohn McCall (VK == VK_RValue ? OK_Ordinary : OK_VectorComponent), 4366bebbe0d9b7568ce43a464286bee49429489ef483Douglas Gregor base->isTypeDependent(), base->isValueDependent(), 4367561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor base->isInstantiationDependent(), 4368bebbe0d9b7568ce43a464286bee49429489ef483Douglas Gregor base->containsUnexpandedParameterPack()), 4369d3c98a02c73417689deaaa6671ea6df7f2a8a73cDouglas Gregor Base(base), Accessor(&accessor), AccessorLoc(loc) {} 43701eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4371d3c98a02c73417689deaaa6671ea6df7f2a8a73cDouglas Gregor /// \brief Build an empty vector element expression. 4372d3c98a02c73417689deaaa6671ea6df7f2a8a73cDouglas Gregor explicit ExtVectorElementExpr(EmptyShell Empty) 4373d3c98a02c73417689deaaa6671ea6df7f2a8a73cDouglas Gregor : Expr(ExtVectorElementExprClass, Empty) { } 4374d3c98a02c73417689deaaa6671ea6df7f2a8a73cDouglas Gregor 4375a09f585a7fdbb01b4bf9de3679fd37005379ca66Chris Lattner const Expr *getBase() const { return cast<Expr>(Base); } 4376a09f585a7fdbb01b4bf9de3679fd37005379ca66Chris Lattner Expr *getBase() { return cast<Expr>(Base); } 4377d3c98a02c73417689deaaa6671ea6df7f2a8a73cDouglas Gregor void setBase(Expr *E) { Base = E; } 4378d3c98a02c73417689deaaa6671ea6df7f2a8a73cDouglas Gregor 4379d3c98a02c73417689deaaa6671ea6df7f2a8a73cDouglas Gregor IdentifierInfo &getAccessor() const { return *Accessor; } 4380d3c98a02c73417689deaaa6671ea6df7f2a8a73cDouglas Gregor void setAccessor(IdentifierInfo *II) { Accessor = II; } 4381d3c98a02c73417689deaaa6671ea6df7f2a8a73cDouglas Gregor 4382d3c98a02c73417689deaaa6671ea6df7f2a8a73cDouglas Gregor SourceLocation getAccessorLoc() const { return AccessorLoc; } 4383d3c98a02c73417689deaaa6671ea6df7f2a8a73cDouglas Gregor void setAccessorLoc(SourceLocation L) { AccessorLoc = L; } 4384d3c98a02c73417689deaaa6671ea6df7f2a8a73cDouglas Gregor 4385a09f585a7fdbb01b4bf9de3679fd37005379ca66Chris Lattner /// getNumElements - Get the number of components being selected. 4386a09f585a7fdbb01b4bf9de3679fd37005379ca66Chris Lattner unsigned getNumElements() const; 43871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4388a09f585a7fdbb01b4bf9de3679fd37005379ca66Chris Lattner /// containsDuplicateElements - Return true if any element access is 4389a09f585a7fdbb01b4bf9de3679fd37005379ca66Chris Lattner /// repeated. 4390a09f585a7fdbb01b4bf9de3679fd37005379ca66Chris Lattner bool containsDuplicateElements() const; 43911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4392a09f585a7fdbb01b4bf9de3679fd37005379ca66Chris Lattner /// getEncodedElementAccess - Encode the elements accessed into an llvm 4393a09f585a7fdbb01b4bf9de3679fd37005379ca66Chris Lattner /// aggregate Constant of ConstantInt(s). 4394686775deca8b8685eb90801495880e3abdd844c2Chris Lattner void getEncodedElementAccess(SmallVectorImpl<unsigned> &Elts) const; 43951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 439665d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocStart() const LLVM_READONLY { 439765d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen return getBase()->getLocStart(); 4398a09f585a7fdbb01b4bf9de3679fd37005379ca66Chris Lattner } 439965d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocEnd() const LLVM_READONLY { return AccessorLoc; } 44001eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 44012140e904dbe53657339cb5b1cc13de563ca0d1fcChris Lattner /// isArrow - Return true if the base expression is a pointer to vector, 44022140e904dbe53657339cb5b1cc13de563ca0d1fcChris Lattner /// return false if the base expression is a vector. 44032140e904dbe53657339cb5b1cc13de563ca0d1fcChris Lattner bool isArrow() const; 44041eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 44051eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump static bool classof(const Stmt *T) { 44061eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return T->getStmtClass() == ExtVectorElementExprClass; 4407a09f585a7fdbb01b4bf9de3679fd37005379ca66Chris Lattner } 44081eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4409a09f585a7fdbb01b4bf9de3679fd37005379ca66Chris Lattner // Iterators 441063c00d7f35fa060c0a446c9df3a4402d9c7757feJohn McCall child_range children() { return child_range(&Base, &Base+1); } 4411a09f585a7fdbb01b4bf9de3679fd37005379ca66Chris Lattner}; 4412a09f585a7fdbb01b4bf9de3679fd37005379ca66Chris Lattner 4413a09f585a7fdbb01b4bf9de3679fd37005379ca66Chris Lattner 441456ee6896f2efebffb4a2cce5a7610cdf1eddbbbeSteve Naroff/// BlockExpr - Adaptor class for mixing a BlockDecl with expressions. 44159c3c902835ef7d37300463ad47176ec21a67dc8bSteve Naroff/// ^{ statement-body } or ^(int arg1, float arg2){ statement-body } 44164eb206bebcdab28ababe8df55c6185cec2cdc071Steve Naroffclass BlockExpr : public Expr { 441756ee6896f2efebffb4a2cce5a7610cdf1eddbbbeSteve Naroffprotected: 441856ee6896f2efebffb4a2cce5a7610cdf1eddbbbeSteve Naroff BlockDecl *TheBlock; 44194eb206bebcdab28ababe8df55c6185cec2cdc071Steve Naroffpublic: 4420469a1eb996e1cb0be54f9b210f836afbddcbb2ccJohn McCall BlockExpr(BlockDecl *BD, QualType ty) 4421f89e55ab1bfb3ea997f8b02997c611a02254eb2dJohn McCall : Expr(BlockExprClass, ty, VK_RValue, OK_Ordinary, 4422ec79d877c1998366480d97a7a6c94e15c053edd8Douglas Gregor ty->isDependentType(), ty->isDependentType(), 4423ec79d877c1998366480d97a7a6c94e15c053edd8Douglas Gregor ty->isInstantiationDependentType() || BD->isDependentContext(), 4424561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor false), 4425469a1eb996e1cb0be54f9b210f836afbddcbb2ccJohn McCall TheBlock(BD) {} 44269c3c902835ef7d37300463ad47176ec21a67dc8bSteve Naroff 442784af7c27cdc615ff917a501d61256b4049383c97Douglas Gregor /// \brief Build an empty block expression. 442884af7c27cdc615ff917a501d61256b4049383c97Douglas Gregor explicit BlockExpr(EmptyShell Empty) : Expr(BlockExprClass, Empty) { } 442984af7c27cdc615ff917a501d61256b4049383c97Douglas Gregor 4430d5cab5435371b8cc74a9e05ebd40b5995ebad149Anders Carlsson const BlockDecl *getBlockDecl() const { return TheBlock; } 443156ee6896f2efebffb4a2cce5a7610cdf1eddbbbeSteve Naroff BlockDecl *getBlockDecl() { return TheBlock; } 443284af7c27cdc615ff917a501d61256b4049383c97Douglas Gregor void setBlockDecl(BlockDecl *BD) { TheBlock = BD; } 443384af7c27cdc615ff917a501d61256b4049383c97Douglas Gregor 443456ee6896f2efebffb4a2cce5a7610cdf1eddbbbeSteve Naroff // Convenience functions for probing the underlying BlockDecl. 443556ee6896f2efebffb4a2cce5a7610cdf1eddbbbeSteve Naroff SourceLocation getCaretLocation() const; 443656ee6896f2efebffb4a2cce5a7610cdf1eddbbbeSteve Naroff const Stmt *getBody() const; 443756ee6896f2efebffb4a2cce5a7610cdf1eddbbbeSteve Naroff Stmt *getBody(); 44389c3c902835ef7d37300463ad47176ec21a67dc8bSteve Naroff 443965d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocStart() const LLVM_READONLY { return getCaretLocation(); } 444065d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocEnd() const LLVM_READONLY { return getBody()->getLocEnd(); } 44419c3c902835ef7d37300463ad47176ec21a67dc8bSteve Naroff 444256ee6896f2efebffb4a2cce5a7610cdf1eddbbbeSteve Naroff /// getFunctionType - Return the underlying function type for this block. 4443a345edb668380691fc92d4e4aa0a5ffec366ca6aJohn McCall const FunctionProtoType *getFunctionType() const; 444456ee6896f2efebffb4a2cce5a7610cdf1eddbbbeSteve Naroff 44451eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump static bool classof(const Stmt *T) { 44469c3c902835ef7d37300463ad47176ec21a67dc8bSteve Naroff return T->getStmtClass() == BlockExprClass; 44474eb206bebcdab28ababe8df55c6185cec2cdc071Steve Naroff } 44481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 44494eb206bebcdab28ababe8df55c6185cec2cdc071Steve Naroff // Iterators 445063c00d7f35fa060c0a446c9df3a4402d9c7757feJohn McCall child_range children() { return child_range(); } 44514eb206bebcdab28ababe8df55c6185cec2cdc071Steve Naroff}; 44521eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 445361eee0ca33b29e102f11bab77c8b74cc00e2392bTanya Lattner/// AsTypeExpr - Clang builtin function __builtin_astype [OpenCL 6.2.4.2] 445461eee0ca33b29e102f11bab77c8b74cc00e2392bTanya Lattner/// This AST node provides support for reinterpreting a type to another 445561eee0ca33b29e102f11bab77c8b74cc00e2392bTanya Lattner/// type of the same size. 4456379010addb0e84fd0fbc37c829baf658958521bdJohn McCallclass AsTypeExpr : public Expr { // Should this be an ExplicitCastExpr? 445761eee0ca33b29e102f11bab77c8b74cc00e2392bTanya Lattnerprivate: 4458379010addb0e84fd0fbc37c829baf658958521bdJohn McCall Stmt *SrcExpr; 445961eee0ca33b29e102f11bab77c8b74cc00e2392bTanya Lattner SourceLocation BuiltinLoc, RParenLoc; 4460379010addb0e84fd0fbc37c829baf658958521bdJohn McCall 4461379010addb0e84fd0fbc37c829baf658958521bdJohn McCall friend class ASTReader; 4462379010addb0e84fd0fbc37c829baf658958521bdJohn McCall friend class ASTStmtReader; 4463379010addb0e84fd0fbc37c829baf658958521bdJohn McCall explicit AsTypeExpr(EmptyShell Empty) : Expr(AsTypeExprClass, Empty) {} 4464ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 446561eee0ca33b29e102f11bab77c8b74cc00e2392bTanya Lattnerpublic: 446661eee0ca33b29e102f11bab77c8b74cc00e2392bTanya Lattner AsTypeExpr(Expr* SrcExpr, QualType DstType, 446761eee0ca33b29e102f11bab77c8b74cc00e2392bTanya Lattner ExprValueKind VK, ExprObjectKind OK, 446861eee0ca33b29e102f11bab77c8b74cc00e2392bTanya Lattner SourceLocation BuiltinLoc, SourceLocation RParenLoc) 4469ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie : Expr(AsTypeExprClass, DstType, VK, OK, 4470561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor DstType->isDependentType(), 4471561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor DstType->isDependentType() || SrcExpr->isValueDependent(), 4472561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor (DstType->isInstantiationDependentType() || 4473561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor SrcExpr->isInstantiationDependent()), 4474561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor (DstType->containsUnexpandedParameterPack() || 4475561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor SrcExpr->containsUnexpandedParameterPack())), 4476379010addb0e84fd0fbc37c829baf658958521bdJohn McCall SrcExpr(SrcExpr), BuiltinLoc(BuiltinLoc), RParenLoc(RParenLoc) {} 4477ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 447861eee0ca33b29e102f11bab77c8b74cc00e2392bTanya Lattner /// getSrcExpr - Return the Expr to be converted. 4479379010addb0e84fd0fbc37c829baf658958521bdJohn McCall Expr *getSrcExpr() const { return cast<Expr>(SrcExpr); } 4480379010addb0e84fd0fbc37c829baf658958521bdJohn McCall 4481379010addb0e84fd0fbc37c829baf658958521bdJohn McCall /// getBuiltinLoc - Return the location of the __builtin_astype token. 4482379010addb0e84fd0fbc37c829baf658958521bdJohn McCall SourceLocation getBuiltinLoc() const { return BuiltinLoc; } 4483379010addb0e84fd0fbc37c829baf658958521bdJohn McCall 4484379010addb0e84fd0fbc37c829baf658958521bdJohn McCall /// getRParenLoc - Return the location of final right parenthesis. 4485379010addb0e84fd0fbc37c829baf658958521bdJohn McCall SourceLocation getRParenLoc() const { return RParenLoc; } 4486ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 448765d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocStart() const LLVM_READONLY { return BuiltinLoc; } 448865d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocEnd() const LLVM_READONLY { return RParenLoc; } 4489ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 449061eee0ca33b29e102f11bab77c8b74cc00e2392bTanya Lattner static bool classof(const Stmt *T) { 4491ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie return T->getStmtClass() == AsTypeExprClass; 449261eee0ca33b29e102f11bab77c8b74cc00e2392bTanya Lattner } 4493ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 449461eee0ca33b29e102f11bab77c8b74cc00e2392bTanya Lattner // Iterators 4495379010addb0e84fd0fbc37c829baf658958521bdJohn McCall child_range children() { return child_range(&SrcExpr, &SrcExpr+1); } 449661eee0ca33b29e102f11bab77c8b74cc00e2392bTanya Lattner}; 4497276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedman 44984b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// PseudoObjectExpr - An expression which accesses a pseudo-object 44994b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// l-value. A pseudo-object is an abstract object, accesses to which 45004b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// are translated to calls. The pseudo-object expression has a 45014b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// syntactic form, which shows how the expression was actually 45024b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// written in the source code, and a semantic form, which is a series 45034b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// of expressions to be executed in order which detail how the 45044b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// operation is actually evaluated. Optionally, one of the semantic 45054b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// forms may also provide a result value for the expression. 45064b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// 45074b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// If any of the semantic-form expressions is an OpaqueValueExpr, 45084b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// that OVE is required to have a source expression, and it is bound 45094b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// to the result of that source expression. Such OVEs may appear 45104b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// only in subsequent semantic-form expressions and as 45114b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// sub-expressions of the syntactic form. 45124b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// 45134b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// PseudoObjectExpr should be used only when an operation can be 45144b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// usefully described in terms of fairly simple rewrite rules on 45154b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// objects and functions that are meant to be used by end-developers. 45164b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// For example, under the Itanium ABI, dynamic casts are implemented 45174b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// as a call to a runtime function called __dynamic_cast; using this 45184b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// class to describe that would be inappropriate because that call is 45194b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// not really part of the user-visible semantics, and instead the 45204b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// cast is properly reflected in the AST and IR-generation has been 45214b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// taught to generate the call as necessary. In contrast, an 45224b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// Objective-C property access is semantically defined to be 45234b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// equivalent to a particular message send, and this is very much 45244b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// part of the user model. The name of this class encourages this 45254b9c2d235fb9449e249d74f48ecfec601650de93John McCall/// modelling design. 45264b9c2d235fb9449e249d74f48ecfec601650de93John McCallclass PseudoObjectExpr : public Expr { 45274b9c2d235fb9449e249d74f48ecfec601650de93John McCall // PseudoObjectExprBits.NumSubExprs - The number of sub-expressions. 45284b9c2d235fb9449e249d74f48ecfec601650de93John McCall // Always at least two, because the first sub-expression is the 45294b9c2d235fb9449e249d74f48ecfec601650de93John McCall // syntactic form. 45304b9c2d235fb9449e249d74f48ecfec601650de93John McCall 45314b9c2d235fb9449e249d74f48ecfec601650de93John McCall // PseudoObjectExprBits.ResultIndex - The index of the 45324b9c2d235fb9449e249d74f48ecfec601650de93John McCall // sub-expression holding the result. 0 means the result is void, 45334b9c2d235fb9449e249d74f48ecfec601650de93John McCall // which is unambiguous because it's the index of the syntactic 45344b9c2d235fb9449e249d74f48ecfec601650de93John McCall // form. Note that this is therefore 1 higher than the value passed 45354b9c2d235fb9449e249d74f48ecfec601650de93John McCall // in to Create, which is an index within the semantic forms. 45364b9c2d235fb9449e249d74f48ecfec601650de93John McCall // Note also that ASTStmtWriter assumes this encoding. 45374b9c2d235fb9449e249d74f48ecfec601650de93John McCall 45384b9c2d235fb9449e249d74f48ecfec601650de93John McCall Expr **getSubExprsBuffer() { return reinterpret_cast<Expr**>(this + 1); } 45394b9c2d235fb9449e249d74f48ecfec601650de93John McCall const Expr * const *getSubExprsBuffer() const { 45404b9c2d235fb9449e249d74f48ecfec601650de93John McCall return reinterpret_cast<const Expr * const *>(this + 1); 45414b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 45424b9c2d235fb9449e249d74f48ecfec601650de93John McCall 45434b9c2d235fb9449e249d74f48ecfec601650de93John McCall friend class ASTStmtReader; 45444b9c2d235fb9449e249d74f48ecfec601650de93John McCall 45454b9c2d235fb9449e249d74f48ecfec601650de93John McCall PseudoObjectExpr(QualType type, ExprValueKind VK, 45464b9c2d235fb9449e249d74f48ecfec601650de93John McCall Expr *syntactic, ArrayRef<Expr*> semantic, 45474b9c2d235fb9449e249d74f48ecfec601650de93John McCall unsigned resultIndex); 45484b9c2d235fb9449e249d74f48ecfec601650de93John McCall 45494b9c2d235fb9449e249d74f48ecfec601650de93John McCall PseudoObjectExpr(EmptyShell shell, unsigned numSemanticExprs); 45504b9c2d235fb9449e249d74f48ecfec601650de93John McCall 45514b9c2d235fb9449e249d74f48ecfec601650de93John McCall unsigned getNumSubExprs() const { 45524b9c2d235fb9449e249d74f48ecfec601650de93John McCall return PseudoObjectExprBits.NumSubExprs; 45534b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 45544b9c2d235fb9449e249d74f48ecfec601650de93John McCall 45554b9c2d235fb9449e249d74f48ecfec601650de93John McCallpublic: 45564b9c2d235fb9449e249d74f48ecfec601650de93John McCall /// NoResult - A value for the result index indicating that there is 45574b9c2d235fb9449e249d74f48ecfec601650de93John McCall /// no semantic result. 45584b9c2d235fb9449e249d74f48ecfec601650de93John McCall enum { NoResult = ~0U }; 45594b9c2d235fb9449e249d74f48ecfec601650de93John McCall 45604b9c2d235fb9449e249d74f48ecfec601650de93John McCall static PseudoObjectExpr *Create(ASTContext &Context, Expr *syntactic, 45614b9c2d235fb9449e249d74f48ecfec601650de93John McCall ArrayRef<Expr*> semantic, 45624b9c2d235fb9449e249d74f48ecfec601650de93John McCall unsigned resultIndex); 45634b9c2d235fb9449e249d74f48ecfec601650de93John McCall 45644b9c2d235fb9449e249d74f48ecfec601650de93John McCall static PseudoObjectExpr *Create(ASTContext &Context, EmptyShell shell, 45654b9c2d235fb9449e249d74f48ecfec601650de93John McCall unsigned numSemanticExprs); 45664b9c2d235fb9449e249d74f48ecfec601650de93John McCall 45674b9c2d235fb9449e249d74f48ecfec601650de93John McCall /// Return the syntactic form of this expression, i.e. the 45684b9c2d235fb9449e249d74f48ecfec601650de93John McCall /// expression it actually looks like. Likely to be expressed in 45694b9c2d235fb9449e249d74f48ecfec601650de93John McCall /// terms of OpaqueValueExprs bound in the semantic form. 45704b9c2d235fb9449e249d74f48ecfec601650de93John McCall Expr *getSyntacticForm() { return getSubExprsBuffer()[0]; } 45714b9c2d235fb9449e249d74f48ecfec601650de93John McCall const Expr *getSyntacticForm() const { return getSubExprsBuffer()[0]; } 45724b9c2d235fb9449e249d74f48ecfec601650de93John McCall 45734b9c2d235fb9449e249d74f48ecfec601650de93John McCall /// Return the index of the result-bearing expression into the semantics 45744b9c2d235fb9449e249d74f48ecfec601650de93John McCall /// expressions, or PseudoObjectExpr::NoResult if there is none. 45754b9c2d235fb9449e249d74f48ecfec601650de93John McCall unsigned getResultExprIndex() const { 45764b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (PseudoObjectExprBits.ResultIndex == 0) return NoResult; 45774b9c2d235fb9449e249d74f48ecfec601650de93John McCall return PseudoObjectExprBits.ResultIndex - 1; 45784b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 45794b9c2d235fb9449e249d74f48ecfec601650de93John McCall 45804b9c2d235fb9449e249d74f48ecfec601650de93John McCall /// Return the result-bearing expression, or null if there is none. 45814b9c2d235fb9449e249d74f48ecfec601650de93John McCall Expr *getResultExpr() { 45824b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (PseudoObjectExprBits.ResultIndex == 0) 45834b9c2d235fb9449e249d74f48ecfec601650de93John McCall return 0; 45844b9c2d235fb9449e249d74f48ecfec601650de93John McCall return getSubExprsBuffer()[PseudoObjectExprBits.ResultIndex]; 45854b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 45864b9c2d235fb9449e249d74f48ecfec601650de93John McCall const Expr *getResultExpr() const { 45874b9c2d235fb9449e249d74f48ecfec601650de93John McCall return const_cast<PseudoObjectExpr*>(this)->getResultExpr(); 45884b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 45894b9c2d235fb9449e249d74f48ecfec601650de93John McCall 45904b9c2d235fb9449e249d74f48ecfec601650de93John McCall unsigned getNumSemanticExprs() const { return getNumSubExprs() - 1; } 45914b9c2d235fb9449e249d74f48ecfec601650de93John McCall 45924b9c2d235fb9449e249d74f48ecfec601650de93John McCall typedef Expr * const *semantics_iterator; 45934b9c2d235fb9449e249d74f48ecfec601650de93John McCall typedef const Expr * const *const_semantics_iterator; 45944b9c2d235fb9449e249d74f48ecfec601650de93John McCall semantics_iterator semantics_begin() { 45954b9c2d235fb9449e249d74f48ecfec601650de93John McCall return getSubExprsBuffer() + 1; 45964b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 45974b9c2d235fb9449e249d74f48ecfec601650de93John McCall const_semantics_iterator semantics_begin() const { 45984b9c2d235fb9449e249d74f48ecfec601650de93John McCall return getSubExprsBuffer() + 1; 45994b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 46004b9c2d235fb9449e249d74f48ecfec601650de93John McCall semantics_iterator semantics_end() { 46014b9c2d235fb9449e249d74f48ecfec601650de93John McCall return getSubExprsBuffer() + getNumSubExprs(); 46024b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 46034b9c2d235fb9449e249d74f48ecfec601650de93John McCall const_semantics_iterator semantics_end() const { 46044b9c2d235fb9449e249d74f48ecfec601650de93John McCall return getSubExprsBuffer() + getNumSubExprs(); 46054b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 46064b9c2d235fb9449e249d74f48ecfec601650de93John McCall Expr *getSemanticExpr(unsigned index) { 46074b9c2d235fb9449e249d74f48ecfec601650de93John McCall assert(index + 1 < getNumSubExprs()); 46084b9c2d235fb9449e249d74f48ecfec601650de93John McCall return getSubExprsBuffer()[index + 1]; 46094b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 46104b9c2d235fb9449e249d74f48ecfec601650de93John McCall const Expr *getSemanticExpr(unsigned index) const { 46114b9c2d235fb9449e249d74f48ecfec601650de93John McCall return const_cast<PseudoObjectExpr*>(this)->getSemanticExpr(index); 46124b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 46134b9c2d235fb9449e249d74f48ecfec601650de93John McCall 46144f311183be3d923da9fbe8702c453688b4c426a9Daniel Dunbar SourceLocation getExprLoc() const LLVM_READONLY { 46154b9c2d235fb9449e249d74f48ecfec601650de93John McCall return getSyntacticForm()->getExprLoc(); 46164b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 461765d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen 461865d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocStart() const LLVM_READONLY { 461965d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen return getSyntacticForm()->getLocStart(); 462065d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen } 462165d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocEnd() const LLVM_READONLY { 462265d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen return getSyntacticForm()->getLocEnd(); 46234b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 46244b9c2d235fb9449e249d74f48ecfec601650de93John McCall 46254b9c2d235fb9449e249d74f48ecfec601650de93John McCall child_range children() { 46264b9c2d235fb9449e249d74f48ecfec601650de93John McCall Stmt **cs = reinterpret_cast<Stmt**>(getSubExprsBuffer()); 46274b9c2d235fb9449e249d74f48ecfec601650de93John McCall return child_range(cs, cs + getNumSubExprs()); 46284b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 46294b9c2d235fb9449e249d74f48ecfec601650de93John McCall 46304b9c2d235fb9449e249d74f48ecfec601650de93John McCall static bool classof(const Stmt *T) { 46314b9c2d235fb9449e249d74f48ecfec601650de93John McCall return T->getStmtClass() == PseudoObjectExprClass; 46324b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 46334b9c2d235fb9449e249d74f48ecfec601650de93John McCall}; 46344b9c2d235fb9449e249d74f48ecfec601650de93John McCall 4635276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedman/// AtomicExpr - Variadic atomic builtins: __atomic_exchange, __atomic_fetch_*, 4636276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedman/// __atomic_load, __atomic_store, and __atomic_compare_exchange_*, for the 4637ff34d401ff385ef7173ca612432b4ea717fff690Richard Smith/// similarly-named C++11 instructions, and __c11 variants for <stdatomic.h>. 4638ff34d401ff385ef7173ca612432b4ea717fff690Richard Smith/// All of these instructions take one primary pointer and at least one memory 4639ff34d401ff385ef7173ca612432b4ea717fff690Richard Smith/// order. 4640276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedmanclass AtomicExpr : public Expr { 4641276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedmanpublic: 4642ff34d401ff385ef7173ca612432b4ea717fff690Richard Smith enum AtomicOp { 4643ff34d401ff385ef7173ca612432b4ea717fff690Richard Smith#define BUILTIN(ID, TYPE, ATTRS) 4644ff34d401ff385ef7173ca612432b4ea717fff690Richard Smith#define ATOMIC_BUILTIN(ID, TYPE, ATTRS) AO ## ID, 4645ff34d401ff385ef7173ca612432b4ea717fff690Richard Smith#include "clang/Basic/Builtins.def" 4646ff34d401ff385ef7173ca612432b4ea717fff690Richard Smith // Avoid trailing comma 4647ff34d401ff385ef7173ca612432b4ea717fff690Richard Smith BI_First = 0 4648ff34d401ff385ef7173ca612432b4ea717fff690Richard Smith }; 4649ff34d401ff385ef7173ca612432b4ea717fff690Richard Smith 4650276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedmanprivate: 4651ff34d401ff385ef7173ca612432b4ea717fff690Richard Smith enum { PTR, ORDER, VAL1, ORDER_FAIL, VAL2, WEAK, END_EXPR }; 4652276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedman Stmt* SubExprs[END_EXPR]; 4653276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedman unsigned NumSubExprs; 4654276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedman SourceLocation BuiltinLoc, RParenLoc; 4655276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedman AtomicOp Op; 4656276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedman 4657e1b2abc2ed3f2c98985b06b4ad01c977bd584020Richard Smith friend class ASTStmtReader; 4658e1b2abc2ed3f2c98985b06b4ad01c977bd584020Richard Smith 4659276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedmanpublic: 46603b6bef9a213249c6ab6d67c07b1ac6380961be3eBenjamin Kramer AtomicExpr(SourceLocation BLoc, ArrayRef<Expr*> args, QualType t, 4661dfa64ba45922e1c28e36341bdf34785fea74659bEli Friedman AtomicOp op, SourceLocation RP); 4662276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedman 4663e1b2abc2ed3f2c98985b06b4ad01c977bd584020Richard Smith /// \brief Determine the number of arguments the specified atomic builtin 4664e1b2abc2ed3f2c98985b06b4ad01c977bd584020Richard Smith /// should have. 4665e1b2abc2ed3f2c98985b06b4ad01c977bd584020Richard Smith static unsigned getNumSubExprs(AtomicOp Op); 4666e1b2abc2ed3f2c98985b06b4ad01c977bd584020Richard Smith 4667276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedman /// \brief Build an empty AtomicExpr. 4668276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedman explicit AtomicExpr(EmptyShell Empty) : Expr(AtomicExprClass, Empty) { } 4669276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedman 4670276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedman Expr *getPtr() const { 4671276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedman return cast<Expr>(SubExprs[PTR]); 4672276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedman } 4673276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedman Expr *getOrder() const { 4674276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedman return cast<Expr>(SubExprs[ORDER]); 4675276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedman } 4676276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedman Expr *getVal1() const { 4677ff34d401ff385ef7173ca612432b4ea717fff690Richard Smith if (Op == AO__c11_atomic_init) 46787a7ee3033e44b45630981355460ef89efa0bdcc4David Chisnall return cast<Expr>(SubExprs[ORDER]); 4679ff34d401ff385ef7173ca612432b4ea717fff690Richard Smith assert(NumSubExprs > VAL1); 4680276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedman return cast<Expr>(SubExprs[VAL1]); 4681276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedman } 4682276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedman Expr *getOrderFail() const { 4683ff34d401ff385ef7173ca612432b4ea717fff690Richard Smith assert(NumSubExprs > ORDER_FAIL); 4684276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedman return cast<Expr>(SubExprs[ORDER_FAIL]); 4685276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedman } 4686276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedman Expr *getVal2() const { 4687ff34d401ff385ef7173ca612432b4ea717fff690Richard Smith if (Op == AO__atomic_exchange) 4688ff34d401ff385ef7173ca612432b4ea717fff690Richard Smith return cast<Expr>(SubExprs[ORDER_FAIL]); 4689ff34d401ff385ef7173ca612432b4ea717fff690Richard Smith assert(NumSubExprs > VAL2); 4690276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedman return cast<Expr>(SubExprs[VAL2]); 4691276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedman } 4692ff34d401ff385ef7173ca612432b4ea717fff690Richard Smith Expr *getWeak() const { 4693ff34d401ff385ef7173ca612432b4ea717fff690Richard Smith assert(NumSubExprs > WEAK); 4694ff34d401ff385ef7173ca612432b4ea717fff690Richard Smith return cast<Expr>(SubExprs[WEAK]); 4695ff34d401ff385ef7173ca612432b4ea717fff690Richard Smith } 4696276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedman 4697276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedman AtomicOp getOp() const { return Op; } 4698276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedman unsigned getNumSubExprs() { return NumSubExprs; } 4699276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedman 4700dfa64ba45922e1c28e36341bdf34785fea74659bEli Friedman Expr **getSubExprs() { return reinterpret_cast<Expr **>(SubExprs); } 4701dfa64ba45922e1c28e36341bdf34785fea74659bEli Friedman 4702276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedman bool isVolatile() const { 4703276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedman return getPtr()->getType()->getPointeeType().isVolatileQualified(); 4704276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedman } 4705276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedman 4706276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedman bool isCmpXChg() const { 4707ff34d401ff385ef7173ca612432b4ea717fff690Richard Smith return getOp() == AO__c11_atomic_compare_exchange_strong || 4708ff34d401ff385ef7173ca612432b4ea717fff690Richard Smith getOp() == AO__c11_atomic_compare_exchange_weak || 4709ff34d401ff385ef7173ca612432b4ea717fff690Richard Smith getOp() == AO__atomic_compare_exchange || 4710ff34d401ff385ef7173ca612432b4ea717fff690Richard Smith getOp() == AO__atomic_compare_exchange_n; 4711276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedman } 4712276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedman 4713276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedman SourceLocation getBuiltinLoc() const { return BuiltinLoc; } 4714276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedman SourceLocation getRParenLoc() const { return RParenLoc; } 4715276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedman 471665d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocStart() const LLVM_READONLY { return BuiltinLoc; } 471765d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen SourceLocation getLocEnd() const LLVM_READONLY { return RParenLoc; } 471865d78312ce026092cb6e7b1d4d06f05e18d02aa0Erik Verbruggen 4719276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedman static bool classof(const Stmt *T) { 4720276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedman return T->getStmtClass() == AtomicExprClass; 4721276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedman } 4722276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedman 4723276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedman // Iterators 4724276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedman child_range children() { 4725276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedman return child_range(SubExprs, SubExprs+NumSubExprs); 4726276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedman } 4727276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedman}; 47285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} // end namespace clang 47295f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 47305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#endif 4731