Expr.h revision ec5bc81fd55bfcc26fc4bde6d5e33113d94c2209
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" 185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include "clang/AST/Stmt.h" 195f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include "clang/AST/Type.h" 20161755a09898c95d21bfff33707da9ca41cd53c5John McCall#include "clang/AST/DeclAccessPair.h" 215baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall#include "clang/AST/OperationKinds.h" 22709210feee317b8d6690dd1d15c2b74cfe55e261Ted Kremenek#include "clang/AST/ASTVector.h" 23409c99edb8b623403fade6f3a9e9c86acda74455Anders Carlsson#include "clang/AST/UsuallyTinyPtrVector.h" 245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include "clang/Basic/TypeTraits.h" 25525a05093a4816af961fe2bc6b8a81c17e2e26c2Chris Lattner#include "llvm/ADT/APSInt.h" 263b8d116703db8018f855cbb4733ace426422623bNate Begeman#include "llvm/ADT/APFloat.h" 27b648023da23e8b227cdda57a241db4c6f368726bDaniel Dunbar#include "llvm/ADT/SmallVector.h" 28c5ae899b4bbf65488445316c63168079177db0edSteve Naroff#include "llvm/ADT/StringRef.h" 295f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include <cctype> 305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 31590b6646ef747d2f7b42e5f40487ff07642d7b6fChris Lattnernamespace clang { 32c44eec6dd29ee9415cbd38a35deff4c8b67abb6aAnders Carlsson class ASTContext; 33c4a1dea2dc56bd1357ec91b829a0b9e68229a13eDaniel Dunbar class APValue; 34c4a1dea2dc56bd1357ec91b829a0b9e68229a13eDaniel Dunbar class Decl; 35c4a1dea2dc56bd1357ec91b829a0b9e68229a13eDaniel Dunbar class IdentifierInfo; 368e9bebdea69c590dedfbf27374114cb76fe12fbdDouglas Gregor class ParmVarDecl; 37c4a1dea2dc56bd1357ec91b829a0b9e68229a13eDaniel Dunbar class NamedDecl; 3856ee6896f2efebffb4a2cce5a7610cdf1eddbbbeSteve Naroff class ValueDecl; 39409c99edb8b623403fade6f3a9e9c86acda74455Anders Carlsson class BlockDecl; 4088a3514f36de96b19cdf50141c640df1a5f13f6cDouglas Gregor class CXXBaseSpecifier; 4188a3514f36de96b19cdf50141c640df1a5f13f6cDouglas Gregor class CXXOperatorCallExpr; 42833ca991c1bfc967f0995974ca86f66ba1f666b5John McCall class CXXMemberCallExpr; 43d5532b6cfff2977e0c59fa6ead7f7973984a620dJohn McCall class ObjCPropertyRefExpr; 4488a3514f36de96b19cdf50141c640df1a5f13f6cDouglas Gregor class TemplateArgumentLoc; 457ab9d574d27ecee1f130e5755aa403e5ab529b6bAnders Carlsson class TemplateArgumentListInfo; 46f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall class OpaqueValueExpr; 477ab9d574d27ecee1f130e5755aa403e5ab529b6bAnders Carlsson 485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// \brief A simple array of base specifiers. 495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencertypedef SmallVector<CXXBaseSpecifier*, 4> CXXCastPath; 505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// Expr - This represents one expression. Note that Expr's are subclasses of 525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// Stmt. This allows an expression to be transparently used any place a Stmt 535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// is required. 54898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor/// 55bef0efd11bc4430a3ee437a3213cec5c18af855aChris Lattnerclass Expr : public Stmt { 569ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor QualType TR; 571eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 58898574e7496ba8fd76290079d3a9d06954992734Douglas Gregorprotected: 59898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor Expr(StmtClass SC, QualType T, ExprValueKind VK, ExprObjectKind OK, 60898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor bool TD, bool VD, bool ID, bool ContainsUnexpandedParameterPack) 611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump : Stmt(SC) 62898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor { 63898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor ExprBits.TypeDependent = TD; 64898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor ExprBits.ValueDependent = VD; 655baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall ExprBits.InstantiationDependent = ID; 665baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall ExprBits.ValueKind = VK; 675baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall ExprBits.ObjectKind = OK; 685baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall ExprBits.ContainsUnexpandedParameterPack = ContainsUnexpandedParameterPack; 695baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall setType(T); 70f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall } 71898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor 725baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall /// \brief Construct an empty expression. 73898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor explicit Expr(StmtClass SC, EmptyShell) : Stmt(SC) { } 74898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor 75898574e7496ba8fd76290079d3a9d06954992734Douglas Gregorpublic: 760b7489194f9f89fac39d57211c1e7953ae50251fDouglas Gregor QualType getType() const { return TR; } 770b7489194f9f89fac39d57211c1e7953ae50251fDouglas Gregor void setType(QualType t) { 780b7489194f9f89fac39d57211c1e7953ae50251fDouglas Gregor // In C++, the type of an expression is always adjusted so that it 791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // will not have reference type an expression will never have 8043d9d9243329b1b75d1a6efdad9f16d6fb386b8eDouglas Gregor // reference type (C++ [expr]p6). Use 8143d9d9243329b1b75d1a6efdad9f16d6fb386b8eDouglas Gregor // QualType::getNonReferenceType() to retrieve the non-reference 8243d9d9243329b1b75d1a6efdad9f16d6fb386b8eDouglas Gregor // type. Additionally, inspect Expr::isLvalue to determine whether 8343d9d9243329b1b75d1a6efdad9f16d6fb386b8eDouglas Gregor // an expression that is adjusted in this manner should be 8443d9d9243329b1b75d1a6efdad9f16d6fb386b8eDouglas Gregor // considered an lvalue. 8543d9d9243329b1b75d1a6efdad9f16d6fb386b8eDouglas Gregor assert((t.isNull() || !t->isReferenceType()) && 8643d9d9243329b1b75d1a6efdad9f16d6fb386b8eDouglas Gregor "Expressions can't have reference type"); 8743d9d9243329b1b75d1a6efdad9f16d6fb386b8eDouglas Gregor 881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump TR = t; 89f7c2aa0b049272d8f318988c1965760dcb852578Douglas Gregor } 901eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 919d293dfc0ad7c44ae0b5eb9517f1ed8c8d8b7ff7Douglas Gregor /// isValueDependent - Determines whether this expression is 929d293dfc0ad7c44ae0b5eb9517f1ed8c8d8b7ff7Douglas Gregor /// value-dependent (C++ [temp.dep.constexpr]). For example, the 939d293dfc0ad7c44ae0b5eb9517f1ed8c8d8b7ff7Douglas Gregor /// array bound of "Chars" in the following example is 949d293dfc0ad7c44ae0b5eb9517f1ed8c8d8b7ff7Douglas Gregor /// value-dependent. 959d293dfc0ad7c44ae0b5eb9517f1ed8c8d8b7ff7Douglas Gregor /// @code 969d293dfc0ad7c44ae0b5eb9517f1ed8c8d8b7ff7Douglas Gregor /// template<int Size, char (&Chars)[Size]> struct meta_string; 979d293dfc0ad7c44ae0b5eb9517f1ed8c8d8b7ff7Douglas Gregor /// @endcode 98905d11d53aeb6b26744f44fedc2b2820c7a62df6Douglas Gregor bool isValueDependent() const { return ExprBits.ValueDependent; } 998320aaaa01d931aa234fc3bce05b399ef41898d5Daniel Dunbar 100f7c2aa0b049272d8f318988c1965760dcb852578Douglas Gregor /// \brief Set whether this expression is value-dependent or not. 1011eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump void setValueDependent(bool VD) { 1029d293dfc0ad7c44ae0b5eb9517f1ed8c8d8b7ff7Douglas Gregor ExprBits.ValueDependent = VD; 10377ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek if (VD) 104898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor ExprBits.InstantiationDependent = true; 105898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor } 106898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor 1071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// isTypeDependent - Determines whether this expression is 108898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor /// type-dependent (C++ [temp.dep.expr]), which means that its type 109898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor /// could change from one template instantiation to the next. For 110898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor /// example, the expressions "x" and "x + y" are type-dependent in 111898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor /// the following code, but "y" is not type-dependent: 112898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor /// @code 1130b7489194f9f89fac39d57211c1e7953ae50251fDouglas Gregor /// template<typename T> 1140b7489194f9f89fac39d57211c1e7953ae50251fDouglas Gregor /// void add(T x, int y) { 1150b7489194f9f89fac39d57211c1e7953ae50251fDouglas Gregor /// x + y; 116898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor /// } 117898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor /// @endcode 118898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor bool isTypeDependent() const { return ExprBits.TypeDependent; } 119898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor 120898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor /// \brief Set whether this expression is type-dependent or not. 121898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor void setTypeDependent(bool TD) { 1221eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump ExprBits.TypeDependent = TD; 123898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor if (TD) 124898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor ExprBits.InstantiationDependent = true; 125898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor } 126898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor 127898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor /// \brief Whether this expression is instantiation-dependent, meaning that 128898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor /// it depends in some way on a template parameter, even if neither its type 1290b7489194f9f89fac39d57211c1e7953ae50251fDouglas Gregor /// nor (constant) value can change due to the template instantiation. 1300b7489194f9f89fac39d57211c1e7953ae50251fDouglas Gregor /// 1310b7489194f9f89fac39d57211c1e7953ae50251fDouglas Gregor /// In the following example, the expression \c sizeof(sizeof(T() + T())) is 1325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// instantiation-dependent (since it involves a template parameter \c T), but 1335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// is neither type- nor value-dependent, since the type of the inner 1345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// \c sizeof is known (\c std::size_t) and therefore the size of the outer 1355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// \c sizeof is known. 1365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// 1375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// \code 1385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// template<typename T> 1395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// void f(T x, T y) { 1401eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// sizeof(sizeof(T() + T()); 141026dc96ac6ece60da5e1b98e2a71bd0ff0939fd8Chris Lattner /// } 142026dc96ac6ece60da5e1b98e2a71bd0ff0939fd8Chris Lattner /// \endcode 143026dc96ac6ece60da5e1b98e2a71bd0ff0939fd8Chris Lattner /// 144026dc96ac6ece60da5e1b98e2a71bd0ff0939fd8Chris Lattner bool isInstantiationDependent() const { 145026dc96ac6ece60da5e1b98e2a71bd0ff0939fd8Chris Lattner return ExprBits.InstantiationDependent; 146df317bf71653eeb235da8337b1e8e790f9653aa4Mike Stump } 1471eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// \brief Set whether this expression is instantiation-dependent or not. 1495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void setInstantiationDependent(bool ID) { 1505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ExprBits.InstantiationDependent = ID; 1515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 1525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// \brief Whether this expression contains an unexpanded parameter 1545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// pack (for C++0x variadic templates). 1555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// 1565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// Given the following function template: 15708ad47cbd1f81fcb31dbc731c13b885a07e12704Bill Wendling /// 15876458501a8963fa11b91c9337a487de6871169b4Sebastian Redl /// \code 1595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// template<typename F, typename ...Types> 1605f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// void forward(const F &f, Types &&...args) { 1615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// f(static_cast<Types&&>(args)...); 1625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// } 1635f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// \endcode 164fec0b49c3fa621fbf63e420f3d54a5bb3a0265d2Steve Naroff /// 16586f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor /// The expressions \c args and \c static_cast<Types&&>(args) both 1662514a309204341798f96912ce7a90841bea59727Fariborz Jahanian /// contain parameter packs. 167e9ff443040cb571ae2c5c2626c4dc9a9a812d84aFariborz Jahanian bool containsUnexpandedParameterPack() const { 168e873fb74219f48407ae0b8fa083aa7f0b6ff1427Douglas Gregor return ExprBits.ContainsUnexpandedParameterPack; 1695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 17028be73f74c9e241a23ea24fe5756623de6bf1084Chris Lattner 17153202857c60214d80950a975e6e52aebf30bd16aEli Friedman /// \brief Set the bit that describes whether this expression 1725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// contains an unexpanded parameter pack. 1735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void setContainsUnexpandedParameterPack(bool PP = true) { 1741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump ExprBits.ContainsUnexpandedParameterPack = PP; 1755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 1765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 17744e35f7b2b5da1eb338639e46bf0b5522e75c5f3Daniel Dunbar /// getExprLoc - Return the preferred location for the arrow when diagnosing 17844e35f7b2b5da1eb338639e46bf0b5522e75c5f3Daniel Dunbar /// a problem with a generic expression. 17944e35f7b2b5da1eb338639e46bf0b5522e75c5f3Daniel Dunbar SourceLocation getExprLoc() const; 18044e35f7b2b5da1eb338639e46bf0b5522e75c5f3Daniel Dunbar 1815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// isUnusedResultAWarning - Return true if this immediate expression should 1825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// be warned about if the result is unused. If so, fill in Loc and Ranges 1835f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// with location to warn on and the source range[s] to report with the 1845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// warning. 185fec0b49c3fa621fbf63e420f3d54a5bb3a0265d2Steve Naroff bool isUnusedResultAWarning(SourceLocation &Loc, SourceRange &R1, 1865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceRange &R2, ASTContext &Ctx) const; 187ca354faa7e9b99af17070c82b9662a5fca76422cChris Lattner 1885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// isLValue - True if this expression is an "l-value" according to 1895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// the rules of the current language. C and C++ give somewhat 1904f6a7d7ead09b439216c32f2de806a998aeb222aSteve Naroff /// different rules for this concept, but in general, the result of 1915daf570d0ce027e18ed5f9d66e6b2a14a40b720dFariborz Jahanian /// an l-value expression identifies a specific object whereas the 192ba8d2d684e74a20bef03828c21c991d222c7e9e5Fariborz Jahanian /// result of an r-value expression is a value detached from any 19386f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor /// specific storage. 1942514a309204341798f96912ce7a90841bea59727Fariborz Jahanian /// 195e9ff443040cb571ae2c5c2626c4dc9a9a812d84aFariborz Jahanian /// C++0x divides the concept of "r-value" into pure r-values 196e873fb74219f48407ae0b8fa083aa7f0b6ff1427Douglas Gregor /// ("pr-values") and so-called expiring values ("x-values"), which 1975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// identify specific objects that can be safely cannibalized for 19844e35f7b2b5da1eb338639e46bf0b5522e75c5f3Daniel Dunbar /// their resources. This is an unfortunate abuse of terminology on 19944e35f7b2b5da1eb338639e46bf0b5522e75c5f3Daniel Dunbar /// the part of the C++ committee. In Clang, when we say "r-value", 2001eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// we generally mean a pr-value. 2012111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl bool isLValue() const { return getValueKind() == VK_LValue; } 2022111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl bool isRValue() const { return getValueKind() == VK_RValue; } 2032111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl bool isXValue() const { return getValueKind() == VK_XValue; } 2042111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl bool isGLValue() const { return getValueKind() != VK_RValue; } 2052111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl 2062111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl enum LValueClassification { 2072111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl LV_Valid, 2082111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl LV_NotObjectType, 2092111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl LV_IncompleteVoidType, 2102111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl LV_DuplicateVectorComponents, 2112111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl LV_InvalidExpression, 2122111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl LV_InvalidMessageExpression, 2132111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl LV_MemberFunction, 2142111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl LV_SubObjCPropertySetting, 2152111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl LV_ClassTemporary 2162111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl }; 2172111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl /// Reasons why an expression might not be an l-value. 2182111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl LValueClassification ClassifyLValue(ASTContext &Ctx) const; 2192111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl 2202111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl /// isModifiableLvalue - C99 6.3.2.1: an lvalue that does not have array type, 2212111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl /// does not have an incomplete type, does not have a const-qualified type, 2222111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl /// and if it is a structure or union, does not have any member (including, 2232111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl /// recursively, any member or element of all contained aggregates or unions) 2242111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl /// with a const-qualified type. 2252111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl /// 2262111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl /// \param Loc [in] [out] - A source location which *may* be filled 2272111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl /// in with the location of the expression making this a 2282111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl /// non-modifiable lvalue, if specified. 2292111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl enum isModifiableLvalueResult { 2302111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl MLV_Valid, 2312111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl MLV_NotObjectType, 2322111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl MLV_IncompleteVoidType, 2332111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl MLV_DuplicateVectorComponents, 2342111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl MLV_InvalidExpression, 2352111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl MLV_LValueCast, // Specialized form of MLV_InvalidExpression. 2362111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl MLV_IncompleteType, 2372111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl MLV_ConstQualified, 2382111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl MLV_ArrayType, 2392111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl MLV_NotBlockQualified, 2402111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl MLV_ReadonlyProperty, 2412111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl MLV_NoSetterProperty, 2422111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl MLV_MemberFunction, 2432111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl MLV_SubObjCPropertySetting, 2442111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl MLV_InvalidMessageExpression, 2452111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl MLV_ClassTemporary 2462111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl }; 2472111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl isModifiableLvalueResult isModifiableLvalue(ASTContext &Ctx, 2482111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl SourceLocation *Loc = 0) const; 2492111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl 2502111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl /// \brief The return type of classify(). Represents the C++0x expression 2512111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl /// taxonomy. 2522111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl class Classification { 2532111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl public: 2542111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl /// \brief The various classification results. Most of these mean prvalue. 2552111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl enum Kinds { 2562111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl CL_LValue, 2572111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl CL_XValue, 2582111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl CL_Function, // Functions cannot be lvalues in C. 2592111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl CL_Void, // Void cannot be an lvalue in C. 2602111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl CL_AddressableVoid, // Void expression whose address can be taken in C. 2612111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl CL_DuplicateVectorComponents, // A vector shuffle with dupes. 2622111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl CL_MemberFunction, // An expression referring to a member function 2632111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl CL_SubObjCPropertySetting, 2642111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl CL_ClassTemporary, // A prvalue of class type 2652111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl CL_ObjCMessageRValue, // ObjC message is an rvalue 2662111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl CL_PRValue // A prvalue for any other reason, of any other type 2672111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl }; 2682111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl /// \brief The results of modification testing. 2692111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl enum ModifiableType { 2702111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl CM_Untested, // testModifiable was false. 2712111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl CM_Modifiable, 2722111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl CM_RValue, // Not modifiable because it's an rvalue 2732111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl CM_Function, // Not modifiable because it's a function; C++ only 2742111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl CM_LValueCast, // Same as CM_RValue, but indicates GCC cast-as-lvalue ext 2752111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl CM_NotBlockQualified, // Not captured in the closure 2762111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl CM_NoSetterProperty,// Implicit assignment to ObjC property without setter 2772111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl CM_ConstQualified, 2782111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl CM_ArrayType, 2792111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl CM_IncompleteType 2802111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl }; 2812111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl 2822111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl private: 2832111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl friend class Expr; 2842111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl 2852111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl unsigned short Kind; 2862111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl unsigned short Modifiable; 2872111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl 2882111c855343a0530e236bf0862358ec8d67b28f3Sebastian Redl explicit Classification(Kinds k, ModifiableType m) 28933bbbc5ec8269bc2cde5b84f970fa49319a30267Douglas Gregor : Kind(k), Modifiable(m) 29033bbbc5ec8269bc2cde5b84f970fa49319a30267Douglas Gregor {} 29133bbbc5ec8269bc2cde5b84f970fa49319a30267Douglas Gregor 2925f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer public: 29338d068e8f13a119b89a3b8b0f79f35cab1ffd09aAnders Carlsson Classification() {} 29438d068e8f13a119b89a3b8b0f79f35cab1ffd09aAnders Carlsson 29538d068e8f13a119b89a3b8b0f79f35cab1ffd09aAnders Carlsson Kinds getKind() const { return static_cast<Kinds>(Kind); } 2961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump ModifiableType getModifiable() const { 297093802675b1548f2a5f44c29938d65cce00d58bbAnders Carlsson assert(Modifiable != CM_Untested && "Did not test for modifiability."); 298093802675b1548f2a5f44c29938d65cce00d58bbAnders Carlsson return static_cast<ModifiableType>(Modifiable); 299c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt } 3002b334bb3126a67895813e49e6228dad4aec0b4d6Chris Lattner bool isLValue() const { return Kind == CL_LValue; } 3012b334bb3126a67895813e49e6228dad4aec0b4d6Chris Lattner bool isXValue() const { return Kind == CL_XValue; } 3022b334bb3126a67895813e49e6228dad4aec0b4d6Chris Lattner bool isGLValue() const { return Kind <= CL_XValue; } 3032b334bb3126a67895813e49e6228dad4aec0b4d6Chris Lattner bool isPRValue() const { return Kind >= CL_Function; } 3042b334bb3126a67895813e49e6228dad4aec0b4d6Chris Lattner bool isRValue() const { return Kind >= CL_XValue; } 305c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt bool isModifiable() const { return getModifiable() == CM_Modifiable; } 3065f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3075f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// \brief Create a simple, modifiably lvalue 3085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer static Classification makeSimpleLValue() { 3095f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return Classification(CL_LValue, CM_Modifiable); 310590b6646ef747d2f7b42e5f40487ff07642d7b6fChris Lattner } 311590b6646ef747d2f7b42e5f40487ff07642d7b6fChris Lattner 3125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer }; 313590b6646ef747d2f7b42e5f40487ff07642d7b6fChris Lattner /// \brief Classify - Classify this expression according to the C++0x 3148070a8497c0fb3e6f70a557f788405d8945b1208Daniel Dunbar /// expression taxonomy. 315590b6646ef747d2f7b42e5f40487ff07642d7b6fChris Lattner /// 3165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// C++0x defines ([basic.lval]) a new taxonomy of expressions to replace the 317c9e8f606787b0bc0c3b08e566b87cc1751694168Eli Friedman /// old lvalue vs rvalue. This function determines the type of expression this 318c9e8f606787b0bc0c3b08e566b87cc1751694168Eli Friedman /// is. There are three expression types: 3194204f07fc8bffe6d320b2de95fea274ccf37a17bJohn McCall /// - lvalues are classical lvalues as in C++03. 3201eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// - prvalues are equivalent to rvalues in C++03. 32194deaf675ae60e11c2d9475c6dbfd0c7123160f5Anders Carlsson /// - xvalues are expressions yielding unnamed rvalue references, e.g. a 32294deaf675ae60e11c2d9475c6dbfd0c7123160f5Anders Carlsson /// function returning an rvalue reference. 3232d6744ff04c1690a1485178d550d2fab84a0270bDaniel Dunbar /// lvalues and xvalues are collectively referred to as glvalues, while 32494deaf675ae60e11c2d9475c6dbfd0c7123160f5Anders Carlsson /// prvalues and xvalues together form rvalues. 3251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Classification Classify(ASTContext &Ctx) const { 32694deaf675ae60e11c2d9475c6dbfd0c7123160f5Anders Carlsson return ClassifyImpl(Ctx, 0); 32794deaf675ae60e11c2d9475c6dbfd0c7123160f5Anders Carlsson } 32894deaf675ae60e11c2d9475c6dbfd0c7123160f5Anders Carlsson 3291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// \brief ClassifyModifiable - Classify this expression according to the 33094deaf675ae60e11c2d9475c6dbfd0c7123160f5Anders Carlsson /// C++0x expression taxonomy, and see if it is valid on the left side 33194deaf675ae60e11c2d9475c6dbfd0c7123160f5Anders Carlsson /// of an assignment. 33294deaf675ae60e11c2d9475c6dbfd0c7123160f5Anders Carlsson /// 33394deaf675ae60e11c2d9475c6dbfd0c7123160f5Anders Carlsson /// This function extends classify in that it also tests whether the 33494deaf675ae60e11c2d9475c6dbfd0c7123160f5Anders Carlsson /// expression is modifiable (C99 6.3.2.1p1). 33594deaf675ae60e11c2d9475c6dbfd0c7123160f5Anders Carlsson /// \param Loc A source location that might be filled with a relevant location 33694deaf675ae60e11c2d9475c6dbfd0c7123160f5Anders Carlsson /// if the expression is not modifiable. 33794deaf675ae60e11c2d9475c6dbfd0c7123160f5Anders Carlsson Classification ClassifyModifiable(ASTContext &Ctx, SourceLocation &Loc) const{ 33894deaf675ae60e11c2d9475c6dbfd0c7123160f5Anders Carlsson return ClassifyImpl(Ctx, &Loc); 33994deaf675ae60e11c2d9475c6dbfd0c7123160f5Anders Carlsson } 34094deaf675ae60e11c2d9475c6dbfd0c7123160f5Anders Carlsson 3411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// getValueKindForType - Given a formal return or parameter type, 34294deaf675ae60e11c2d9475c6dbfd0c7123160f5Anders Carlsson /// give its value kind. 343e17a6436b429e4b18a5e157061fb13bbc677b3b0Abramo Bagnara static ExprValueKind getValueKindForType(QualType T) { 344e17a6436b429e4b18a5e157061fb13bbc677b3b0Abramo Bagnara if (const ReferenceType *RT = T->getAs<ReferenceType>()) 345e17a6436b429e4b18a5e157061fb13bbc677b3b0Abramo Bagnara return (isa<LValueReferenceType>(RT) 346e17a6436b429e4b18a5e157061fb13bbc677b3b0Abramo Bagnara ? VK_LValue 347e17a6436b429e4b18a5e157061fb13bbc677b3b0Abramo Bagnara : (RT->getPointeeType()->isFunctionType() 348e17a6436b429e4b18a5e157061fb13bbc677b3b0Abramo Bagnara ? VK_LValue : VK_XValue)); 349e17a6436b429e4b18a5e157061fb13bbc677b3b0Abramo Bagnara return VK_RValue; 350e17a6436b429e4b18a5e157061fb13bbc677b3b0Abramo Bagnara } 351e17a6436b429e4b18a5e157061fb13bbc677b3b0Abramo Bagnara 35294deaf675ae60e11c2d9475c6dbfd0c7123160f5Anders Carlsson /// getValueKind - The value kind that this expression produces. 35394deaf675ae60e11c2d9475c6dbfd0c7123160f5Anders Carlsson ExprValueKind getValueKind() const { 3546ee7aa154e8bbb21a21254293410b944f78b0bfeChris Lattner return static_cast<ExprValueKind>(ExprBits.ValueKind); 355019f4e858e78587f2241ff1a76c747d7bcd7578cChris Lattner } 356019f4e858e78587f2241ff1a76c747d7bcd7578cChris Lattner 357019f4e858e78587f2241ff1a76c747d7bcd7578cChris Lattner /// getObjectKind - The object kind that this expression produces. 3585b45d4ef1ea3f04ec863daf8aa29be6c6e021750Anders Carlsson /// Object kinds are meaningful only for expressions that yield an 3595b45d4ef1ea3f04ec863daf8aa29be6c6e021750Anders Carlsson /// l-value or x-value. 360cd7a445c6b46c5585580dfb652300c8483c0cb6bJohn McCall ExprObjectKind getObjectKind() const { 361cd7a445c6b46c5585580dfb652300c8483c0cb6bJohn McCall return static_cast<ExprObjectKind>(ExprBits.ObjectKind); 362cd7a445c6b46c5585580dfb652300c8483c0cb6bJohn McCall } 363cd7a445c6b46c5585580dfb652300c8483c0cb6bJohn McCall 364cd7a445c6b46c5585580dfb652300c8483c0cb6bJohn McCall bool isOrdinaryOrBitFieldObject() const { 3656ee7aa154e8bbb21a21254293410b944f78b0bfeChris Lattner ExprObjectKind OK = getObjectKind(); 36645b6b9d080ac56917337d73d8f1cd6374b27b05dChris Lattner return (OK == OK_Ordinary || OK == OK_BitField); 36745b6b9d080ac56917337d73d8f1cd6374b27b05dChris Lattner } 368c44eec6dd29ee9415cbd38a35deff4c8b67abb6aAnders Carlsson 3696ddf4784a22b994b954ed74c6061d4603d474639Fariborz Jahanian /// setValueKind - Set the value kind produced by this expression. 370c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt void setValueKind(ExprValueKind Cat) { ExprBits.ValueKind = Cat; } 3716ddf4784a22b994b954ed74c6061d4603d474639Fariborz Jahanian 3726ddf4784a22b994b954ed74c6061d4603d474639Fariborz Jahanian /// setObjectKind - Set the object kind produced by this expression. 373393c247fe025ccb5f914e37e948192ea86faef8cFariborz Jahanian void setObjectKind(ExprObjectKind Cat) { ExprBits.ObjectKind = Cat; } 374c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt 37551fe996231b1d7199f76e4005ff4c943d5deeecdAnders Carlssonprivate: 37651fe996231b1d7199f76e4005ff4c943d5deeecdAnders Carlsson Classification ClassifyImpl(ASTContext &Ctx, SourceLocation *Loc) const; 37751fe996231b1d7199f76e4005ff4c943d5deeecdAnders Carlsson 37851fe996231b1d7199f76e4005ff4c943d5deeecdAnders Carlssonpublic: 379b2f295c8050fb8c141bf2cf38eed0a56e99d0092Eli Friedman 380b2f295c8050fb8c141bf2cf38eed0a56e99d0092Eli Friedman /// \brief If this expression refers to a bit-field, retrieve the 3811b78276a75a5a0f496a82429c1ff9604d622a76dAnders Carlsson /// declaration of that bit-field. 3821b78276a75a5a0f496a82429c1ff9604d622a76dAnders Carlsson FieldDecl *getBitField(); 383e17a6436b429e4b18a5e157061fb13bbc677b3b0Abramo Bagnara 384e17a6436b429e4b18a5e157061fb13bbc677b3b0Abramo Bagnara const FieldDecl *getBitField() const { 385e17a6436b429e4b18a5e157061fb13bbc677b3b0Abramo Bagnara return const_cast<Expr*>(this)->getBitField(); 386ce94049b69f75b44c18584fe79cd238978b6b0d5Douglas Gregor } 387ce94049b69f75b44c18584fe79cd238978b6b0d5Douglas Gregor 388ce94049b69f75b44c18584fe79cd238978b6b0d5Douglas Gregor /// \brief If this expression is an l-value for an Objective C 389ce94049b69f75b44c18584fe79cd238978b6b0d5Douglas Gregor /// property, find the underlying property reference expression. 390ce94049b69f75b44c18584fe79cd238978b6b0d5Douglas Gregor const ObjCPropertyRefExpr *getObjCProperty() const; 391c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt 392ce94049b69f75b44c18584fe79cd238978b6b0d5Douglas Gregor /// \brief Returns whether this expression refers to a vector element. 393ce94049b69f75b44c18584fe79cd238978b6b0d5Douglas Gregor bool refersToVectorElement() const; 394ce94049b69f75b44c18584fe79cd238978b6b0d5Douglas Gregor 395c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt /// isKnownToHaveBooleanValue - Return true if this is an integer expression 396ce94049b69f75b44c18584fe79cd238978b6b0d5Douglas Gregor /// that is known to return 0 or 1. This happens for _Bool/bool expressions 397ce94049b69f75b44c18584fe79cd238978b6b0d5Douglas Gregor /// but also int expressions which are produced by things like comparisons in 398ce94049b69f75b44c18584fe79cd238978b6b0d5Douglas Gregor /// C. 399ce94049b69f75b44c18584fe79cd238978b6b0d5Douglas Gregor bool isKnownToHaveBooleanValue() const; 400c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt 401efa9b3877ef298bcb792600ac33521827e1f7fafAnders Carlsson /// isIntegerConstantExpr - Return true if this expression is a valid integer 402efa9b3877ef298bcb792600ac33521827e1f7fafAnders Carlsson /// constant expression, and, if so, return its value in Result. If not a 403efa9b3877ef298bcb792600ac33521827e1f7fafAnders Carlsson /// valid i-c-e, return false and fill in Loc (if specified) with the location 404ce94049b69f75b44c18584fe79cd238978b6b0d5Douglas Gregor /// of the invalid expression. 405ce94049b69f75b44c18584fe79cd238978b6b0d5Douglas Gregor bool isIntegerConstantExpr(llvm::APSInt &Result, ASTContext &Ctx, 406efa9b3877ef298bcb792600ac33521827e1f7fafAnders Carlsson SourceLocation *Loc = 0, 40744baa8abba2a1552b6b50bf750a8750ab9da9f76Fariborz Jahanian bool isEvaluated = true) const; 4081eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump bool isIntegerConstantExpr(ASTContext &Ctx, SourceLocation *Loc = 0) const { 409102e390bcb5a1fb1a8fdbc8505e6dfd905374bbdFariborz Jahanian llvm::APSInt X; 4101eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return isIntegerConstantExpr(X, Ctx, Loc); 4114e99a5fc3b203397a91136c6e695e405fb8fc606Ted Kremenek } 4121eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// isConstantInitializer - Returns true if this expression is a constant 4134e99a5fc3b203397a91136c6e695e405fb8fc606Ted Kremenek /// initializer, which can be emitted at compile-time. 4144e99a5fc3b203397a91136c6e695e405fb8fc606Ted Kremenek bool isConstantInitializer(ASTContext &Ctx, bool ForRef) const; 4152b334bb3126a67895813e49e6228dad4aec0b4d6Chris Lattner 41656f349400c5932a196509c0480ff6f99a9a0b48fChris Lattner /// EvalResult is a struct with detailed info about an evaluated expression. 41756f349400c5932a196509c0480ff6f99a9a0b48fChris Lattner struct EvalResult { 41827c8dc06f65d7abcf6a7e7f64a7960c9a150ca01Douglas Gregor /// Val - This is the value the expression can be folded to. 41956f349400c5932a196509c0480ff6f99a9a0b48fChris Lattner APValue Val; 4201eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4212fc46bf1a9bc31d50f82de37c70ea257d3cded27John McCall /// HasSideEffects - Whether the evaluated expression has side effects. 4222fc46bf1a9bc31d50f82de37c70ea257d3cded27John McCall /// For example, (f() && 0) can be folded, but it still has side effects. 4232fc46bf1a9bc31d50f82de37c70ea257d3cded27John McCall bool HasSideEffects; 4242fc46bf1a9bc31d50f82de37c70ea257d3cded27John McCall 425ecdd84147c0765caa999ddc22dde25b42712bb4dChris Lattner /// Diag - If the expression is unfoldable, then Diag contains a note 426ecdd84147c0765caa999ddc22dde25b42712bb4dChris Lattner /// diagnostic indicating why it's not foldable. DiagLoc indicates a caret 427ecdd84147c0765caa999ddc22dde25b42712bb4dChris Lattner /// position for the error, and DiagExpr is the expression that caused 428ecdd84147c0765caa999ddc22dde25b42712bb4dChris Lattner /// the error. 4291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// If the expression is foldable, but not an integer constant expression, 4306eef519fc8a97bb7ca6066f23d35e10f06b2c1b5Douglas Gregor /// Diag contains a note diagnostic that describes why it isn't an integer 4316eef519fc8a97bb7ca6066f23d35e10f06b2c1b5Douglas Gregor /// constant expression. If the expression *is* an integer constant 4326eef519fc8a97bb7ca6066f23d35e10f06b2c1b5Douglas Gregor /// expression, then Diag will be zero. 433c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt unsigned Diag; 4346eef519fc8a97bb7ca6066f23d35e10f06b2c1b5Douglas Gregor const Expr *DiagExpr; 4356eef519fc8a97bb7ca6066f23d35e10f06b2c1b5Douglas Gregor SourceLocation DiagLoc; 4366eef519fc8a97bb7ca6066f23d35e10f06b2c1b5Douglas Gregor 4376eef519fc8a97bb7ca6066f23d35e10f06b2c1b5Douglas Gregor EvalResult() : HasSideEffects(false), Diag(0), DiagExpr(0) {} 438c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt 4392f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // isGlobalLValue - Return true if the evaluated lvalue expression 4402f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // is global. 4412f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor bool isGlobalLValue() const; 4422f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // hasSideEffects - Return true if the evaluated expression has 4432f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // side effects. 4442f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor bool hasSideEffects() const { 4452f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor return HasSideEffects; 4462f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor } 4472f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor }; 4482b334bb3126a67895813e49e6228dad4aec0b4d6Chris Lattner 4494e99a5fc3b203397a91136c6e695e405fb8fc606Ted Kremenek /// Evaluate - Return true if this is a constant which we can fold using 4504e99a5fc3b203397a91136c6e695e405fb8fc606Ted Kremenek /// any crazy technique (that has nothing to do with language standards) that 45156f349400c5932a196509c0480ff6f99a9a0b48fChris Lattner /// we want to. If this function returns true, it returns the folded constant 45256f349400c5932a196509c0480ff6f99a9a0b48fChris Lattner /// in Result. 45356f349400c5932a196509c0480ff6f99a9a0b48fChris Lattner bool Evaluate(EvalResult &Result, const ASTContext &Ctx) const; 454ecdd84147c0765caa999ddc22dde25b42712bb4dChris Lattner 455ecdd84147c0765caa999ddc22dde25b42712bb4dChris Lattner /// EvaluateAsBooleanCondition - Return true if this is a constant 456ecdd84147c0765caa999ddc22dde25b42712bb4dChris Lattner /// which we we can fold and convert to a boolean condition using 4571eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// any crazy technique that we want to. 458898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor bool EvaluateAsBooleanCondition(bool &Result, const ASTContext &Ctx) const; 459898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor 460898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor /// isEvaluatable - Call Evaluate to see if this expression can be constant 4611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// folded, but discard the result. 4625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool isEvaluatable(const ASTContext &Ctx) const; 4631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// HasSideEffects - This routine returns true for all those expressions 4655f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// which must be evaluated each time and must not be optimized away 4665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// or evaluated at compile time. Example is a function call, volatile 4675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// variable read. 4681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump bool HasSideEffects(const ASTContext &Ctx) const; 4695549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek 4705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// EvaluateAsInt - Call Evaluate and return the folded integer. This 4715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// must be called on an expression that constant folds to an integer. 4725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer llvm::APSInt EvaluateAsInt(const ASTContext &Ctx) const; 473a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor 474a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor /// EvaluateAsLValue - Evaluate an expression to see if it's a lvalue 475a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor /// with link time known address. 476a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor bool EvaluateAsLValue(EvalResult &Result, const ASTContext &Ctx) const; 477a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor 478c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt /// EvaluateAsLValue - Evaluate an expression to see if it's a lvalue. 479a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor bool EvaluateAsAnyLValue(EvalResult &Result, const ASTContext &Ctx) const; 480a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor 481a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor /// \brief Enumeration used to describe the kind of Null pointer constant 482a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor /// returned from \c isNullPointerConstant(). 483a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor enum NullPointerConstantKind { 484a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor /// \brief Expression is not a Null pointer constant. 485a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor NPCK_NotNull = 0, 486a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor 487a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor /// \brief Expression is a Null pointer constant built from a zero integer. 488c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt NPCK_ZeroInteger, 489a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor 490a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor /// \brief Expression is a C++0X nullptr. 491c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt NPCK_CXX0X_nullptr, 492a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor 493a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor /// \brief Expression is a GNU-style __null constant. 494a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor NPCK_GNUNull 495a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor }; 496c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt 497a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor /// \brief Enumeration used to describe how \c isNullPointerConstant() 498833ca991c1bfc967f0995974ca86f66ba1f666b5John McCall /// should cope with value-dependent expressions. 499833ca991c1bfc967f0995974ca86f66ba1f666b5John McCall enum NullPointerConstantValueDependence { 500a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor /// \brief Specifies that the expression should never be value-dependent. 501c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt NPC_NeverValueDependent = 0, 502a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor 503833ca991c1bfc967f0995974ca86f66ba1f666b5John McCall /// \brief Specifies that a value-dependent expression of integral or 504833ca991c1bfc967f0995974ca86f66ba1f666b5John McCall /// dependent type should be considered a null pointer constant. 505a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor NPC_ValueDependentIsNull, 506d5532b6cfff2977e0c59fa6ead7f7973984a620dJohn McCall 507d5532b6cfff2977e0c59fa6ead7f7973984a620dJohn McCall /// \brief Specifies that a value-dependent expression should be considered 508d5532b6cfff2977e0c59fa6ead7f7973984a620dJohn McCall /// to never be a null pointer constant. 5098dfbd8b252ba4e6cf4b7a3422f6ef0ca21312dfeArgyrios Kyrtzidis NPC_ValueDependentIsNotNull 510d5532b6cfff2977e0c59fa6ead7f7973984a620dJohn McCall }; 511a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor 512c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt /// isNullPointerConstant - C99 6.3.2.3p3 - Test if this reduces down to 5135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// a Null pointer constant. The return value can further distinguish the 5145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// kind of NULL pointer constant that was detected. 5155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer NullPointerConstantKind isNullPointerConstant( 516a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor ASTContext &Ctx, 517c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt NullPointerConstantValueDependence NPC) const; 518a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor 519a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor /// isOBJCGCCandidate - Return true if this expression may be used in a read/ 520c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt /// write barrier. 521a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor bool isOBJCGCCandidate(ASTContext &Ctx) const; 522a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor 523a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor /// \brief Returns true if this expression is a bound member function. 524c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt bool isBoundMemberFunction(ASTContext &Ctx) const; 525c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt 526a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor /// \brief Given an expression of bound-member type, find the type 527c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt /// of the member. Returns null if this is an *overloaded* bound 528a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor /// member expression. 529dbd872f273a8dbf22e089b3def6c09f0a460965dJohn McCall static QualType findBoundMemberType(const Expr *expr); 5302577743c5650c646fb705df01403707e94f2df04Abramo Bagnara 531a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor /// \brief Result type of CanThrow(). 5325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer enum CanThrowResult { 5339e922b1663ecb95dc7eee03002fd66ed18fb3192Argyrios Kyrtzidis CT_Cannot, 5342577743c5650c646fb705df01403707e94f2df04Abramo Bagnara CT_Dependent, 5352577743c5650c646fb705df01403707e94f2df04Abramo Bagnara CT_Can 5362577743c5650c646fb705df01403707e94f2df04Abramo Bagnara }; 5372577743c5650c646fb705df01403707e94f2df04Abramo Bagnara /// \brief Test if this expression, if evaluated, might throw, according to 538a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor /// the rules of C++ [expr.unary.noexcept]. 539a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor CanThrowResult CanThrow(ASTContext &C) const; 5402cf719c3c3d805f630dfc6b1255e52647820888eSebastian Redl 541a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor /// IgnoreImpCasts - Skip past any implicit casts which might 542c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt /// surround this expression. Only skips ImplicitCastExprs. 543a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor Expr *IgnoreImpCasts(); 544a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor 545c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt /// IgnoreImplicit - Skip past any implicit AST nodes which might 546a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor /// surround this expression. 547a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor Expr *IgnoreImplicit() { return cast<Expr>(Stmt::IgnoreImplicit()); } 548a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor 549a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor /// IgnoreParens - Ignore parentheses. If this Expr is a ParenExpr, return 550096832c5ed5b9106fa177ebc148489760c3bc496John McCall /// its subexpression. If that subexpression is also a ParenExpr, 551a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor /// then this method recursively returns its subexpression, and so forth. 552dbd872f273a8dbf22e089b3def6c09f0a460965dJohn McCall /// Otherwise, the method returns the current Expr. 553d5532b6cfff2977e0c59fa6ead7f7973984a620dJohn McCall Expr *IgnoreParens(); 5540da76df9218d7c27b471b0a4d83a5b29fe24e5b4Douglas Gregor 555663e380d7b2de2bbf20e886e05371195bea9adc4Argyrios Kyrtzidis /// IgnoreParenCasts - Ignore parentheses and casts. Strip off any ParenExpr 5562577743c5650c646fb705df01403707e94f2df04Abramo Bagnara /// or CastExprs, returning their operand. 5572577743c5650c646fb705df01403707e94f2df04Abramo Bagnara Expr *IgnoreParenCasts(); 5582577743c5650c646fb705df01403707e94f2df04Abramo Bagnara 5592577743c5650c646fb705df01403707e94f2df04Abramo Bagnara /// IgnoreParenImpCasts - Ignore parentheses and implicit casts. Strip off any 5602577743c5650c646fb705df01403707e94f2df04Abramo Bagnara /// ParenExpr or ImplicitCastExprs, returning their operand. 561663e380d7b2de2bbf20e886e05371195bea9adc4Argyrios Kyrtzidis Expr *IgnoreParenImpCasts(); 562663e380d7b2de2bbf20e886e05371195bea9adc4Argyrios Kyrtzidis 563663e380d7b2de2bbf20e886e05371195bea9adc4Argyrios Kyrtzidis /// IgnoreConversionOperator - Ignore conversion operator. If this Expr is a 564c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt /// call to a conversion operator, return the argument. 5650da76df9218d7c27b471b0a4d83a5b29fe24e5b4Douglas Gregor Expr *IgnoreConversionOperator(); 5660da76df9218d7c27b471b0a4d83a5b29fe24e5b4Douglas Gregor 5670da76df9218d7c27b471b0a4d83a5b29fe24e5b4Douglas Gregor const Expr *IgnoreConversionOperator() const { 5689e922b1663ecb95dc7eee03002fd66ed18fb3192Argyrios Kyrtzidis return const_cast<Expr*>(this)->IgnoreConversionOperator(); 5695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 570dbd872f273a8dbf22e089b3def6c09f0a460965dJohn McCall 5710da76df9218d7c27b471b0a4d83a5b29fe24e5b4Douglas Gregor const Expr *IgnoreParenImpCasts() const { 5720da76df9218d7c27b471b0a4d83a5b29fe24e5b4Douglas Gregor return const_cast<Expr*>(this)->IgnoreParenImpCasts(); 5730da76df9218d7c27b471b0a4d83a5b29fe24e5b4Douglas Gregor } 5741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 575a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor /// Ignore parentheses and lvalue casts. Strip off any ParenExpr and 576a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor /// CastExprs that represent lvalue casts, returning their operand. 577a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor Expr *IgnoreParenLValueCasts(); 578dbd872f273a8dbf22e089b3def6c09f0a460965dJohn McCall 579a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor const Expr *IgnoreParenLValueCasts() const { 5800da76df9218d7c27b471b0a4d83a5b29fe24e5b4Douglas Gregor return const_cast<Expr*>(this)->IgnoreParenLValueCasts(); 5810da76df9218d7c27b471b0a4d83a5b29fe24e5b4Douglas Gregor } 582663e380d7b2de2bbf20e886e05371195bea9adc4Argyrios Kyrtzidis 5832577743c5650c646fb705df01403707e94f2df04Abramo Bagnara /// IgnoreParenNoopCasts - Ignore parentheses and casts that do not change the 5842577743c5650c646fb705df01403707e94f2df04Abramo Bagnara /// value (including ptr->int casts of the same size). Strip off any 5852577743c5650c646fb705df01403707e94f2df04Abramo Bagnara /// ParenExpr or CastExprs, returning their operand. 5862577743c5650c646fb705df01403707e94f2df04Abramo Bagnara Expr *IgnoreParenNoopCasts(ASTContext &Ctx); 5872577743c5650c646fb705df01403707e94f2df04Abramo Bagnara 5882577743c5650c646fb705df01403707e94f2df04Abramo Bagnara /// \brief Determine whether this expression is a default function argument. 5892577743c5650c646fb705df01403707e94f2df04Abramo Bagnara /// 5902577743c5650c646fb705df01403707e94f2df04Abramo Bagnara /// Default arguments are implicitly generated in the abstract syntax tree 591663e380d7b2de2bbf20e886e05371195bea9adc4Argyrios Kyrtzidis /// by semantic analysis for function calls, object constructions, etc. in 592663e380d7b2de2bbf20e886e05371195bea9adc4Argyrios Kyrtzidis /// C++. Default arguments are represented by \c CXXDefaultArgExpr nodes; 593663e380d7b2de2bbf20e886e05371195bea9adc4Argyrios Kyrtzidis /// this routine also looks through any implicit casts to determine whether 594c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt /// the expression is a default argument. 595dbd872f273a8dbf22e089b3def6c09f0a460965dJohn McCall bool isDefaultArgument() const; 596dbd872f273a8dbf22e089b3def6c09f0a460965dJohn McCall 597dbd872f273a8dbf22e089b3def6c09f0a460965dJohn McCall /// \brief Determine whether the result of this expression is a 598904eed3f6148758d39a2d3c88f3133274460d645Douglas Gregor /// temporary object of the given class type. 5992577743c5650c646fb705df01403707e94f2df04Abramo Bagnara bool isTemporaryObject(ASTContext &Ctx, const CXXRecordDecl *TempTy) const; 6002577743c5650c646fb705df01403707e94f2df04Abramo Bagnara 6012577743c5650c646fb705df01403707e94f2df04Abramo Bagnara /// \brief Whether this expression is an implicit reference to 'this' in C++. 6022577743c5650c646fb705df01403707e94f2df04Abramo Bagnara bool isImplicitCXXThis() const; 6039e922b1663ecb95dc7eee03002fd66ed18fb3192Argyrios Kyrtzidis 6040b7489194f9f89fac39d57211c1e7953ae50251fDouglas Gregor const Expr *IgnoreImpCasts() const { 605a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor return const_cast<Expr*>(this)->IgnoreImpCasts(); 6061eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 607a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor const Expr *IgnoreParens() const { 608a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor return const_cast<Expr*>(this)->IgnoreParens(); 609a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor } 610c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt const Expr *IgnoreParenCasts() const { 611a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor return const_cast<Expr*>(this)->IgnoreParenCasts(); 612a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor } 613a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor const Expr *IgnoreParenNoopCasts(ASTContext &Ctx) const { 614a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor return const_cast<Expr*>(this)->IgnoreParenNoopCasts(Ctx); 615a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor } 616a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor 617c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt static bool hasAnyTypeDependentArguments(Expr** Exprs, unsigned NumExprs); 618a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor static bool hasAnyValueDependentArguments(Expr** Exprs, unsigned NumExprs); 619a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor 620c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt static bool classof(const Stmt *T) { 621c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt return T->getStmtClass() >= firstExprConstant && 622a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor T->getStmtClass() <= lastExprConstant; 623a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor } 624a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor static bool classof(const Expr *) { return true; } 625a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor}; 626c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt 627a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor 628a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor//===----------------------------------------------------------------------===// 629c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt// Primary Expressions. 630096832c5ed5b9106fa177ebc148489760c3bc496John McCall//===----------------------------------------------------------------------===// 631096832c5ed5b9106fa177ebc148489760c3bc496John McCall 632096832c5ed5b9106fa177ebc148489760c3bc496John McCall/// OpaqueValueExpr - An expression referring to an opaque object of a 633096832c5ed5b9106fa177ebc148489760c3bc496John McCall/// fixed type and value class. These don't correspond to concrete 634096832c5ed5b9106fa177ebc148489760c3bc496John McCall/// syntax; instead they're used to express operations (usually copy 635096832c5ed5b9106fa177ebc148489760c3bc496John McCall/// operations) on values whose source is generally obvious from 636096832c5ed5b9106fa177ebc148489760c3bc496John McCall/// context. 637096832c5ed5b9106fa177ebc148489760c3bc496John McCallclass OpaqueValueExpr : public Expr { 638096832c5ed5b9106fa177ebc148489760c3bc496John McCall friend class ASTStmtReader; 639096832c5ed5b9106fa177ebc148489760c3bc496John McCall Expr *SourceExpr; 640096832c5ed5b9106fa177ebc148489760c3bc496John McCall SourceLocation Loc; 641096832c5ed5b9106fa177ebc148489760c3bc496John McCall 642096832c5ed5b9106fa177ebc148489760c3bc496John McCallpublic: 643096832c5ed5b9106fa177ebc148489760c3bc496John McCall OpaqueValueExpr(SourceLocation Loc, QualType T, ExprValueKind VK, 644096832c5ed5b9106fa177ebc148489760c3bc496John McCall ExprObjectKind OK = OK_Ordinary) 645096832c5ed5b9106fa177ebc148489760c3bc496John McCall : Expr(OpaqueValueExprClass, T, VK, OK, 646096832c5ed5b9106fa177ebc148489760c3bc496John McCall T->isDependentType(), T->isDependentType(), 647096832c5ed5b9106fa177ebc148489760c3bc496John McCall T->isInstantiationDependentType(), 648096832c5ed5b9106fa177ebc148489760c3bc496John McCall false), 649096832c5ed5b9106fa177ebc148489760c3bc496John McCall SourceExpr(0), Loc(Loc) { 650a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor } 651d5532b6cfff2977e0c59fa6ead7f7973984a620dJohn McCall 652096832c5ed5b9106fa177ebc148489760c3bc496John McCall /// Given an expression which invokes a copy constructor --- i.e. a 653096832c5ed5b9106fa177ebc148489760c3bc496John McCall /// CXXConstructExpr, possibly wrapped in an ExprWithCleanups --- 654096832c5ed5b9106fa177ebc148489760c3bc496John McCall /// find the OpaqueValueExpr that's the source of the construction. 655096832c5ed5b9106fa177ebc148489760c3bc496John McCall static const OpaqueValueExpr *findInCopyConstruct(const Expr *expr); 656096832c5ed5b9106fa177ebc148489760c3bc496John McCall 657096832c5ed5b9106fa177ebc148489760c3bc496John McCall explicit OpaqueValueExpr(EmptyShell Empty) 658096832c5ed5b9106fa177ebc148489760c3bc496John McCall : Expr(OpaqueValueExprClass, Empty) { } 659096832c5ed5b9106fa177ebc148489760c3bc496John McCall 660d5532b6cfff2977e0c59fa6ead7f7973984a620dJohn McCall /// \brief Retrieve the location of this expression. 661d5532b6cfff2977e0c59fa6ead7f7973984a620dJohn McCall SourceLocation getLocation() const { return Loc; } 662d5532b6cfff2977e0c59fa6ead7f7973984a620dJohn McCall 663096832c5ed5b9106fa177ebc148489760c3bc496John McCall SourceRange getSourceRange() const { 664096832c5ed5b9106fa177ebc148489760c3bc496John McCall if (SourceExpr) return SourceExpr->getSourceRange(); 665d5532b6cfff2977e0c59fa6ead7f7973984a620dJohn McCall return Loc; 666c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt } 667a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor SourceLocation getExprLoc() const { 668a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor if (SourceExpr) return SourceExpr->getExprLoc(); 669a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor return Loc; 670096832c5ed5b9106fa177ebc148489760c3bc496John McCall } 671a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor 672c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt child_range children() { return child_range(); } 673096832c5ed5b9106fa177ebc148489760c3bc496John McCall 674a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor /// The source expression of an opaque value expression is the 675c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt /// expression which originally generated the value. This is 676a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor /// provided as a convenience for analyses that don't wish to 677a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor /// precisely model the execution behavior of the program. 678833ca991c1bfc967f0995974ca86f66ba1f666b5John McCall /// 679096832c5ed5b9106fa177ebc148489760c3bc496John McCall /// The source expression is typically set when building the 680a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor /// expression which binds the opaque value expression in the first 681c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt /// place. 682096832c5ed5b9106fa177ebc148489760c3bc496John McCall Expr *getSourceExpr() const { return SourceExpr; } 683a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor void setSourceExpr(Expr *e) { SourceExpr = e; } 684c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt 685a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor static bool classof(const Stmt *T) { 686a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor return T->getStmtClass() == OpaqueValueExprClass; 687a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor } 688096832c5ed5b9106fa177ebc148489760c3bc496John McCall static bool classof(const OpaqueValueExpr *) { return true; } 689a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor}; 690c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt 691096832c5ed5b9106fa177ebc148489760c3bc496John McCall/// \brief Represents an explicit template argument list in C++, e.g., 692a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor/// the "<int>" in "sort<int>". 693c302113179a1c2b1254224ea9b6f5316ceeb375cSean Huntstruct ExplicitTemplateArgumentList { 694a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor /// \brief The source location of the left angle bracket ('<'); 695a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor SourceLocation LAngleLoc; 696a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor 697096832c5ed5b9106fa177ebc148489760c3bc496John McCall /// \brief The source location of the right angle bracket ('>'); 698a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor SourceLocation RAngleLoc; 699c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt 700096832c5ed5b9106fa177ebc148489760c3bc496John McCall /// \brief The number of template arguments in TemplateArgs. 701a2813cec2605ce7878d1b13471d685f689b251afDouglas Gregor /// The actual template arguments (if any) are stored after the 702c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt /// ExplicitTemplateArgumentList structure. 7031eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump unsigned NumTemplateArgs; 70499e9b4d172f6877e6ba5ebe75bb8238721f5e01cDouglas Gregor 7055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// \brief Retrieve the template arguments 7065f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer TemplateArgumentLoc *getTemplateArgs() { 7071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return reinterpret_cast<TemplateArgumentLoc *> (this + 1); 70877ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek } 70977ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek 71077ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek /// \brief Retrieve the template arguments 711663e380d7b2de2bbf20e886e05371195bea9adc4Argyrios Kyrtzidis const TemplateArgumentLoc *getTemplateArgs() const { 71260adf4acf40b72227740bf966fb87eebddff3f37Sebastian Redl return reinterpret_cast<const TemplateArgumentLoc *> (this + 1); 7133397c5570369f19b2d6c52e898f708d75ceede1fSebastian Redl } 7145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 7155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void initializeFrom(const TemplateArgumentListInfo &List); 716d9f6910f4ef37c0e8eeee2a01287d9572c3176efChris Lattner void initializeFrom(const TemplateArgumentListInfo &List, 717d9f6910f4ef37c0e8eeee2a01287d9572c3176efChris Lattner bool &Dependent, bool &InstantiationDependent, 718227426661be33ff3e21f2b6b9f97971da2da044fAnders Carlsson bool &ContainsUnexpandedParameterPack); 719227426661be33ff3e21f2b6b9f97971da2da044fAnders Carlsson void copyInto(TemplateArgumentListInfo &List) const; 720227426661be33ff3e21f2b6b9f97971da2da044fAnders Carlsson static std::size_t sizeFor(unsigned NumTemplateArgs); 721227426661be33ff3e21f2b6b9f97971da2da044fAnders Carlsson static std::size_t sizeFor(const TemplateArgumentListInfo &List); 722848fa64143fbe5ae62a601ad61277f741e54dfabAnders Carlsson}; 723848fa64143fbe5ae62a601ad61277f741e54dfabAnders Carlsson 724848fa64143fbe5ae62a601ad61277f741e54dfabAnders Carlsson/// \brief A reference to a declared variable, function, enum, etc. 725848fa64143fbe5ae62a601ad61277f741e54dfabAnders Carlsson/// [C99 6.5.1p2] 726227426661be33ff3e21f2b6b9f97971da2da044fAnders Carlsson/// 7271eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// This encodes all the information about how a declaration is referenced 728227426661be33ff3e21f2b6b9f97971da2da044fAnders Carlsson/// within an expression. 729227426661be33ff3e21f2b6b9f97971da2da044fAnders Carlsson/// 730227426661be33ff3e21f2b6b9f97971da2da044fAnders Carlsson/// There are several optional constructs attached to DeclRefExprs only when 731227426661be33ff3e21f2b6b9f97971da2da044fAnders Carlsson/// they apply in order to conserve memory. These are laid out past the end of 7321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// the object, and flags in the DeclRefExprBitfield track whether they exist: 733c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt/// 734773f3973cf5e2b6b8788e895967dcb3c1e6ffe79Anders Carlsson/// DeclRefExprBits.HasQualifier: 7351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// Specifies when this declaration reference expression has a C++ 73617fc223395d51be582fc666bb6ea21bd1dff26dcDouglas Gregor/// nested-name-specifier. 7371eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// DeclRefExprBits.HasFoundDecl: 73817fc223395d51be582fc666bb6ea21bd1dff26dcDouglas Gregor/// Specifies when this declaration reference expression has a record of 73917fc223395d51be582fc666bb6ea21bd1dff26dcDouglas Gregor/// a NamedDecl (different from the referenced ValueDecl) which was found 740227426661be33ff3e21f2b6b9f97971da2da044fAnders Carlsson/// during name lookup and/or overload resolution. 74117fc223395d51be582fc666bb6ea21bd1dff26dcDouglas Gregor/// DeclRefExprBits.HasExplicitTemplateArgs: 74217fc223395d51be582fc666bb6ea21bd1dff26dcDouglas Gregor/// Specifies when this declaration reference expression has an explicit 74317fc223395d51be582fc666bb6ea21bd1dff26dcDouglas Gregor/// C++ template argument list. 74417fc223395d51be582fc666bb6ea21bd1dff26dcDouglas Gregorclass DeclRefExpr : public Expr { 74517fc223395d51be582fc666bb6ea21bd1dff26dcDouglas Gregor /// \brief The declaration that we are referencing. 746848fa64143fbe5ae62a601ad61277f741e54dfabAnders Carlsson ValueDecl *D; 7473a082d81006e7a2e01a6e431a22e21c78490ff8fAnders Carlsson 748227426661be33ff3e21f2b6b9f97971da2da044fAnders Carlsson /// \brief The location of the declaration name itself. 749227426661be33ff3e21f2b6b9f97971da2da044fAnders Carlsson SourceLocation Loc; 7501eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// \brief Provides source/type location info for the declaration name 752227426661be33ff3e21f2b6b9f97971da2da044fAnders Carlsson /// embedded in D. 753d9f6910f4ef37c0e8eeee2a01287d9572c3176efChris Lattner DeclarationNameLoc DNLoc; 7541eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 75577ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek /// \brief Helper to retrieve the optional NestedNameSpecifierLoc. 75677ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek NestedNameSpecifierLoc &getInternalQualifierLoc() { 75777ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek assert(hasQualifier()); 758227426661be33ff3e21f2b6b9f97971da2da044fAnders Carlsson return *reinterpret_cast<NestedNameSpecifierLoc *>(this + 1); 759227426661be33ff3e21f2b6b9f97971da2da044fAnders Carlsson } 7609996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis 7619996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis /// \brief Helper to retrieve the optional NestedNameSpecifierLoc. 7629996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis const NestedNameSpecifierLoc &getInternalQualifierLoc() const { 7639996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis return const_cast<DeclRefExpr *>(this)->getInternalQualifierLoc(); 7649996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis } 7659996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis 7669996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis /// \brief Test whether there is a distinct FoundDecl attached to the end of 7679996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis /// this DRE. 7689996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis bool hasFoundDecl() const { return DeclRefExprBits.HasFoundDecl; } 7699996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis 7709996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis /// \brief Helper to retrieve the optional NamedDecl through which this 7719996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis /// reference occured. 7729996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis NamedDecl *&getInternalFoundDecl() { 7739996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis assert(hasFoundDecl()); 7749996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis if (hasQualifier()) 7759996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis return *reinterpret_cast<NamedDecl **>(&getInternalQualifierLoc() + 1); 7769996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis return *reinterpret_cast<NamedDecl **>(this + 1); 7779996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis } 7789996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis 7799996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis /// \brief Helper to retrieve the optional NamedDecl through which this 7809996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis /// reference occured. 7819996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis NamedDecl *getInternalFoundDecl() const { 7829996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis return const_cast<DeclRefExpr *>(this)->getInternalFoundDecl(); 7839996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis } 7849996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis 7859996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis DeclRefExpr(NestedNameSpecifierLoc QualifierLoc, 7869996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis ValueDecl *D, const DeclarationNameInfo &NameInfo, 7879996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis NamedDecl *FoundD, 7889996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis const TemplateArgumentListInfo *TemplateArgs, 7899996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis QualType T, ExprValueKind VK); 7909996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis 7919996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis /// \brief Construct an empty declaration reference expression. 7929996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis explicit DeclRefExpr(EmptyShell Empty) 7939996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis : Expr(DeclRefExprClass, Empty) { } 7949996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis 7959996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis /// \brief Computes the type- and value-dependence flags for this 7969996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis /// declaration reference expression. 7979996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis void computeDependence(); 7989996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis 7999996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidispublic: 8009996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis DeclRefExpr(ValueDecl *D, QualType T, ExprValueKind VK, SourceLocation L, 8019996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis const DeclarationNameLoc &LocInfo = DeclarationNameLoc()) 8029996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis : Expr(DeclRefExprClass, T, VK, OK_Ordinary, false, false, false, false), 8039996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis D(D), Loc(L), DNLoc(LocInfo) { 8049996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis DeclRefExprBits.HasQualifier = 0; 8059996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis DeclRefExprBits.HasExplicitTemplateArgs = 0; 8069996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis DeclRefExprBits.HasFoundDecl = 0; 8075f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer computeDependence(); 8089996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis } 8095f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 8109996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis static DeclRefExpr *Create(ASTContext &Context, 8119996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis NestedNameSpecifierLoc QualifierLoc, 8129996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis ValueDecl *D, 8139996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis SourceLocation NameLoc, 8149996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis QualType T, ExprValueKind VK, 8155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer NamedDecl *FoundD = 0, 8161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const TemplateArgumentListInfo *TemplateArgs = 0); 8175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 8189996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis static DeclRefExpr *Create(ASTContext &Context, 8199996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis NestedNameSpecifierLoc QualifierLoc, 8209996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis ValueDecl *D, 8215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const DeclarationNameInfo &NameInfo, 8229996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis QualType T, ExprValueKind VK, 8235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer NamedDecl *FoundD = 0, 824a135fb43eb94524a6529768596a4533eed9aa70dAnders Carlsson const TemplateArgumentListInfo *TemplateArgs = 0); 8259996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis 8269996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis /// \brief Construct an empty declaration reference expression. 8279996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis static DeclRefExpr *CreateEmpty(ASTContext &Context, 8289996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis bool HasQualifier, 8299996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis bool HasFoundDecl, 8300b7489194f9f89fac39d57211c1e7953ae50251fDouglas Gregor bool HasExplicitTemplateArgs, 8319996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis unsigned NumTemplateArgs); 8325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 8335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ValueDecl *getDecl() { return D; } 834313a81dd820c9b2c0203bdcd974c781a81e4f0cfDouglas Gregor const ValueDecl *getDecl() const { return D; } 835313a81dd820c9b2c0203bdcd974c781a81e4f0cfDouglas Gregor void setDecl(ValueDecl *NewD) { D = NewD; } 836313a81dd820c9b2c0203bdcd974c781a81e4f0cfDouglas Gregor 8379996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis DeclarationNameInfo getNameInfo() const { 8380b7489194f9f89fac39d57211c1e7953ae50251fDouglas Gregor return DeclarationNameInfo(getDecl()->getDeclName(), Loc, DNLoc); 8390b7489194f9f89fac39d57211c1e7953ae50251fDouglas Gregor } 8401eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SourceLocation getLocation() const { return Loc; } 8425f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void setLocation(SourceLocation L) { Loc = L; } 8435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceRange getSourceRange() const; 8441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 84577ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek /// \brief Determine whether this declaration reference was preceded by a 84677ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek /// C++ nested-name-specifier, e.g., \c N::foo. 84777ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek bool hasQualifier() const { return DeclRefExprBits.HasQualifier; } 8485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 8495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// \brief If the name was qualified, retrieves the nested-name-specifier 8505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// that precedes the name. Otherwise, returns NULL. 8515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer NestedNameSpecifier *getQualifier() const { 8525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (!hasQualifier()) 853c250aae4f645833aed3a6321bc8598f7330dce8dChris Lattner return 0; 8545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 8555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return getInternalQualifierLoc().getNestedNameSpecifier(); 856c250aae4f645833aed3a6321bc8598f7330dce8dChris Lattner } 8572333f7727f97018d6742e1e0938133bcfad967abEli Friedman 8582333f7727f97018d6742e1e0938133bcfad967abEli Friedman /// \brief If the name was qualified, retrieves the nested-name-specifier 8595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// that precedes the name, with source-location information. 8600b7489194f9f89fac39d57211c1e7953ae50251fDouglas Gregor NestedNameSpecifierLoc getQualifierLoc() const { 8610b7489194f9f89fac39d57211c1e7953ae50251fDouglas Gregor if (!hasQualifier()) 8620b7489194f9f89fac39d57211c1e7953ae50251fDouglas Gregor return NestedNameSpecifierLoc(); 8630b7489194f9f89fac39d57211c1e7953ae50251fDouglas Gregor 864018d8e0596dd57401eeddcf11ac84ff0a065fbbeChris Lattner return getInternalQualifierLoc(); 865c250aae4f645833aed3a6321bc8598f7330dce8dChris Lattner } 8661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// \brief Get the NamedDecl through which this reference occured. 8681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// 8695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// This Decl may be different from the ValueDecl actually referred to in the 8705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// presence of using declarations, etc. It always returns non-NULL, and may 8710b7489194f9f89fac39d57211c1e7953ae50251fDouglas Gregor /// simple return the ValueDecl when appropriate. 8720b7489194f9f89fac39d57211c1e7953ae50251fDouglas Gregor NamedDecl *getFoundDecl() { 8730b7489194f9f89fac39d57211c1e7953ae50251fDouglas Gregor return hasFoundDecl() ? getInternalFoundDecl() : D; 8740b7489194f9f89fac39d57211c1e7953ae50251fDouglas Gregor } 8751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// \brief Get the NamedDecl through which this reference occurred. 8775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// See non-const variant. 8785f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const NamedDecl *getFoundDecl() const { 87977ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek return hasFoundDecl() ? getInternalFoundDecl() : D; 88077ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek } 88177ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek 88277ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek /// \brief Determines whether this declaration reference was followed by an 8835f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// explict template argument list. 8845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool hasExplicitTemplateArgs() const { 8855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return DeclRefExprBits.HasExplicitTemplateArgs; 8869996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis } 887720c4ec57b6110873cd533ad434853a27e7c3f4aTed Kremenek 8885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// \brief Retrieve the explicit template argument list that followed the 8899996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis /// member template name. 8909996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis ExplicitTemplateArgumentList &getExplicitTemplateArgs() { 891720c4ec57b6110873cd533ad434853a27e7c3f4aTed Kremenek assert(hasExplicitTemplateArgs()); 8929996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis if (hasFoundDecl()) 8939996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis return *reinterpret_cast<ExplicitTemplateArgumentList *>( 8949996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis &getInternalFoundDecl() + 1); 8959996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis 8965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (hasQualifier()) 89717fc223395d51be582fc666bb6ea21bd1dff26dcDouglas Gregor return *reinterpret_cast<ExplicitTemplateArgumentList *>( 8981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump &getInternalQualifierLoc() + 1); 8999996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis 90017fc223395d51be582fc666bb6ea21bd1dff26dcDouglas Gregor return *reinterpret_cast<ExplicitTemplateArgumentList *>(this + 1); 9019996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis } 9029996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis 9039996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis /// \brief Retrieve the explicit template argument list that followed the 9049996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis /// member template name. 9059996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis const ExplicitTemplateArgumentList &getExplicitTemplateArgs() const { 9069996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis return const_cast<DeclRefExpr *>(this)->getExplicitTemplateArgs(); 9079996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis } 9089996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis 9099996a7f06a3c5b4554692e7177930cf4e8ef09afArgyrios Kyrtzidis /// \brief Retrieves the optional explicit template arguments. 91017fc223395d51be582fc666bb6ea21bd1dff26dcDouglas Gregor /// This points to the same data as getExplicitTemplateArgs(), but 911720c4ec57b6110873cd533ad434853a27e7c3f4aTed Kremenek /// returns null if there are no explicit template arguments. 91217fc223395d51be582fc666bb6ea21bd1dff26dcDouglas Gregor const ExplicitTemplateArgumentList *getExplicitTemplateArgsOpt() const { 913c9bec4bfea9090a08dd83a7b213f0c8adf8d78ecChris Lattner if (!hasExplicitTemplateArgs()) return 0; 914da8249e57f3badecf925571881fe57243935c6c1Chris Lattner return &getExplicitTemplateArgs(); 915da8249e57f3badecf925571881fe57243935c6c1Chris Lattner } 916da8249e57f3badecf925571881fe57243935c6c1Chris Lattner 917da8249e57f3badecf925571881fe57243935c6c1Chris Lattner /// \brief Copies the template arguments (if present) into the given 9181eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// structure. 91917fc223395d51be582fc666bb6ea21bd1dff26dcDouglas Gregor void copyTemplateArgumentsInto(TemplateArgumentListInfo &List) const { 92017fc223395d51be582fc666bb6ea21bd1dff26dcDouglas Gregor if (hasExplicitTemplateArgs()) 92117fc223395d51be582fc666bb6ea21bd1dff26dcDouglas Gregor getExplicitTemplateArgs().copyInto(List); 9225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 9235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 9241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// \brief Retrieve the location of the left angle bracket following the 9251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// member name ('<'), if any. 9265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceLocation getLAngleLoc() const { 9275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (!hasExplicitTemplateArgs()) 9281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return SourceLocation(); 92977ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek 93077ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek return getExplicitTemplateArgs().LAngleLoc; 93177ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek } 9325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 9335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// \brief Retrieve the template arguments provided as part of this 9345d66145eed1c319df5a69977cb8ff74f597ea544Chris Lattner /// template-id. 9355d66145eed1c319df5a69977cb8ff74f597ea544Chris Lattner const TemplateArgumentLoc *getTemplateArgs() const { 9365d66145eed1c319df5a69977cb8ff74f597ea544Chris Lattner if (!hasExplicitTemplateArgs()) 9375d66145eed1c319df5a69977cb8ff74f597ea544Chris Lattner return 0; 9385d66145eed1c319df5a69977cb8ff74f597ea544Chris Lattner 9395d66145eed1c319df5a69977cb8ff74f597ea544Chris Lattner return getExplicitTemplateArgs().getTemplateArgs(); 9405549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek } 9415d66145eed1c319df5a69977cb8ff74f597ea544Chris Lattner 9425d66145eed1c319df5a69977cb8ff74f597ea544Chris Lattner /// \brief Retrieve the number of template arguments provided as part of this 9432333f7727f97018d6742e1e0938133bcfad967abEli Friedman /// template-id. 9441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump unsigned getNumTemplateArgs() const { 945cb2ca73c1d7e76cc1358ce51457d2d5837d84f9bDouglas Gregor if (!hasExplicitTemplateArgs()) 9461eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return 0; 947cb2ca73c1d7e76cc1358ce51457d2d5837d84f9bDouglas Gregor 948cb2ca73c1d7e76cc1358ce51457d2d5837d84f9bDouglas Gregor return getExplicitTemplateArgs().NumTemplateArgs; 9495549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek } 9505549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek 951cb2ca73c1d7e76cc1358ce51457d2d5837d84f9bDouglas Gregor /// \brief Retrieve the location of the right angle bracket following the 952cb2ca73c1d7e76cc1358ce51457d2d5837d84f9bDouglas Gregor /// template arguments ('>'). 9535d66145eed1c319df5a69977cb8ff74f597ea544Chris Lattner SourceLocation getRAngleLoc() const { 9541eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (!hasExplicitTemplateArgs()) 9551eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return SourceLocation(); 9565d66145eed1c319df5a69977cb8ff74f597ea544Chris Lattner 9575d66145eed1c319df5a69977cb8ff74f597ea544Chris Lattner return getExplicitTemplateArgs().RAngleLoc; 9581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 9595d66145eed1c319df5a69977cb8ff74f597ea544Chris Lattner 9605d66145eed1c319df5a69977cb8ff74f597ea544Chris Lattner static bool classof(const Stmt *T) { 9615d66145eed1c319df5a69977cb8ff74f597ea544Chris Lattner return T->getStmtClass() == DeclRefExprClass; 9625d66145eed1c319df5a69977cb8ff74f597ea544Chris Lattner } 9635d66145eed1c319df5a69977cb8ff74f597ea544Chris Lattner static bool classof(const DeclRefExpr *) { return true; } 964e6a82b2c29ad05534841e5f8fd033fb17b6f61e2Ted Kremenek 965e6a82b2c29ad05534841e5f8fd033fb17b6f61e2Ted Kremenek // Iterators 966e6a82b2c29ad05534841e5f8fd033fb17b6f61e2Ted Kremenek child_range children() { return child_range(); } 967a7ad98ff0919d6a24ea7c46634ea29bea551c1a0Chris Lattner 968c4a09c189981b4561428e4b56fd250718e2717bbChris Lattner friend class ASTStmtReader; 969c4a09c189981b4561428e4b56fd250718e2717bbChris Lattner friend class ASTStmtWriter; 970690398188ea5b428f06aa13c7d4ce6eb741ad4f9Chris Lattner}; 971690398188ea5b428f06aa13c7d4ce6eb741ad4f9Chris Lattner 9728bea7c0ee44c71c817de7dc2be932b73bec90c9fChris Lattner/// PredefinedExpr - [C99 6.4.2.2] - A predefined identifier such as __func__. 973690398188ea5b428f06aa13c7d4ce6eb741ad4f9Chris Lattnerclass PredefinedExpr : public Expr { 974c4a09c189981b4561428e4b56fd250718e2717bbChris Lattnerpublic: 975c4a09c189981b4561428e4b56fd250718e2717bbChris Lattner enum IdentType { 976c4a09c189981b4561428e4b56fd250718e2717bbChris Lattner Func, 977c4a09c189981b4561428e4b56fd250718e2717bbChris Lattner Function, 978c4a09c189981b4561428e4b56fd250718e2717bbChris Lattner PrettyFunction, 979c4a09c189981b4561428e4b56fd250718e2717bbChris Lattner /// PrettyFunctionNoVirtual - The same as PrettyFunction, except that the 9805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// 'virtual' keyword is omitted for virtual member functions. 9815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer PrettyFunctionNoVirtual 9825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer }; 9835f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 984726e168dc09fb23f53c7b004f8e919421ee91806Chris Lattnerprivate: 985726e168dc09fb23f53c7b004f8e919421ee91806Chris Lattner SourceLocation Loc; 9862085fd6cd22ec5c268175251db10d7c60caf7aaaChris Lattner IdentType Type; 9872333f7727f97018d6742e1e0938133bcfad967abEli Friedmanpublic: 9881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump PredefinedExpr(SourceLocation l, QualType type, IdentType IT) 9895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer : Expr(PredefinedExprClass, type, VK_LValue, OK_Ordinary, 9902085fd6cd22ec5c268175251db10d7c60caf7aaaChris Lattner type->isDependentType(), type->isDependentType(), 9912085fd6cd22ec5c268175251db10d7c60caf7aaaChris Lattner type->isInstantiationDependentType(), 9922085fd6cd22ec5c268175251db10d7c60caf7aaaChris Lattner /*ContainsUnexpandedParameterPack=*/false), 9932085fd6cd22ec5c268175251db10d7c60caf7aaaChris Lattner Loc(l), Type(IT) {} 994a135fb43eb94524a6529768596a4533eed9aa70dAnders Carlsson 9952085fd6cd22ec5c268175251db10d7c60caf7aaaChris Lattner /// \brief Construct an empty predefined expression. 9962085fd6cd22ec5c268175251db10d7c60caf7aaaChris Lattner explicit PredefinedExpr(EmptyShell Empty) 9971eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump : Expr(PredefinedExprClass, Empty) { } 9982085fd6cd22ec5c268175251db10d7c60caf7aaaChris Lattner 9992085fd6cd22ec5c268175251db10d7c60caf7aaaChris Lattner IdentType getIdentType() const { return Type; } 10002085fd6cd22ec5c268175251db10d7c60caf7aaaChris Lattner void setIdentType(IdentType IT) { Type = IT; } 10012085fd6cd22ec5c268175251db10d7c60caf7aaaChris Lattner 1002a135fb43eb94524a6529768596a4533eed9aa70dAnders Carlsson SourceLocation getLocation() const { return Loc; } 1003673ecd6a4a9f7c12fb6f76f84f654dbdcdc89e76Douglas Gregor void setLocation(SourceLocation L) { Loc = L; } 1004673ecd6a4a9f7c12fb6f76f84f654dbdcdc89e76Douglas Gregor 1005673ecd6a4a9f7c12fb6f76f84f654dbdcdc89e76Douglas Gregor static std::string ComputeName(IdentType IT, const Decl *CurrentDecl); 1006b648023da23e8b227cdda57a241db4c6f368726bDaniel Dunbar 1007b648023da23e8b227cdda57a241db4c6f368726bDaniel Dunbar SourceRange getSourceRange() const { return SourceRange(Loc); } 1008b648023da23e8b227cdda57a241db4c6f368726bDaniel Dunbar 10092f4eaef37476ae6891ede8ba215d0f6fd093629bBenjamin Kramer static bool classof(const Stmt *T) { 10105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return T->getStmtClass() == PredefinedExprClass; 1011673ecd6a4a9f7c12fb6f76f84f654dbdcdc89e76Douglas Gregor } 1012673ecd6a4a9f7c12fb6f76f84f654dbdcdc89e76Douglas Gregor static bool classof(const PredefinedExpr *) { return true; } 1013b648023da23e8b227cdda57a241db4c6f368726bDaniel Dunbar 1014673ecd6a4a9f7c12fb6f76f84f654dbdcdc89e76Douglas Gregor // Iterators 10155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer child_range children() { return child_range(); } 1016673ecd6a4a9f7c12fb6f76f84f654dbdcdc89e76Douglas Gregor}; 1017673ecd6a4a9f7c12fb6f76f84f654dbdcdc89e76Douglas Gregor 10188d4141f83d9de379547cf05bd75d4c6cf894b189Steve Naroff/// \brief Used by IntegerLiteral/FloatingLiteral to store the numeric without 1019b648023da23e8b227cdda57a241db4c6f368726bDaniel Dunbar/// leaking memory. 1020b648023da23e8b227cdda57a241db4c6f368726bDaniel Dunbar/// 1021b648023da23e8b227cdda57a241db4c6f368726bDaniel Dunbar/// For large floats/integers, APFloat/APInt will allocate memory from the heap 102233fdb738a6c125f4c788733897021b7c1a062b0cSteve Naroff/// to represent these numbers. Unfortunately, when we use a BumpPtrAllocator 102333fdb738a6c125f4c788733897021b7c1a062b0cSteve Naroff/// to allocate IntegerLiteral/FloatingLiteral nodes the memory associated with 102433fdb738a6c125f4c788733897021b7c1a062b0cSteve Naroff/// the APFloat/APInt values will never get freed. APNumericStorage uses 1025726e168dc09fb23f53c7b004f8e919421ee91806Chris Lattner/// ASTContext's allocator for memory allocation. 1026726e168dc09fb23f53c7b004f8e919421ee91806Chris Lattnerclass APNumericStorage { 1027726e168dc09fb23f53c7b004f8e919421ee91806Chris Lattner unsigned BitWidth; 10281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump union { 1029726e168dc09fb23f53c7b004f8e919421ee91806Chris Lattner uint64_t VAL; ///< Used to store the <= 64 bits integer value. 1030726e168dc09fb23f53c7b004f8e919421ee91806Chris Lattner uint64_t *pVal; ///< Used to store the >64 bits integer value. 1031726e168dc09fb23f53c7b004f8e919421ee91806Chris Lattner }; 1032726e168dc09fb23f53c7b004f8e919421ee91806Chris Lattner 10331eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump bool hasAllocation() const { return llvm::APInt::getNumWords(BitWidth) > 1; } 1034673ecd6a4a9f7c12fb6f76f84f654dbdcdc89e76Douglas Gregor 1035673ecd6a4a9f7c12fb6f76f84f654dbdcdc89e76Douglas Gregor APNumericStorage(const APNumericStorage&); // do not implement 1036673ecd6a4a9f7c12fb6f76f84f654dbdcdc89e76Douglas Gregor APNumericStorage& operator=(const APNumericStorage&); // do not implement 1037673ecd6a4a9f7c12fb6f76f84f654dbdcdc89e76Douglas Gregor 1038b137299ce5bb6c36fbba651858600857fda4dd50Chris Lattnerprotected: 1039b137299ce5bb6c36fbba651858600857fda4dd50Chris Lattner APNumericStorage() : BitWidth(0), VAL(0) { } 1040b137299ce5bb6c36fbba651858600857fda4dd50Chris Lattner 10415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer llvm::APInt getIntValue() const { 10421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump unsigned NumWords = llvm::APInt::getNumWords(BitWidth); 10431eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (NumWords > 1) 10445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return llvm::APInt(BitWidth, NumWords, pVal); 10451eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump else 10461eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return llvm::APInt(BitWidth, VAL); 10475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 10485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void setIntValue(ASTContext &C, const llvm::APInt &Val); 10491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump}; 105077ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek 105177ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenekclass APIntStorage : public APNumericStorage { 105277ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenekpublic: 10535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer llvm::APInt getValue() const { return getIntValue(); } 10545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void setValue(ASTContext &C, const llvm::APInt &Val) { setIntValue(C, Val); } 10555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer}; 10565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 10575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass APFloatStorage : public APNumericStorage { 10585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerpublic: 10595549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek llvm::APFloat getValue() const { return llvm::APFloat(getIntValue()); } 10605f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void setValue(ASTContext &C, const llvm::APFloat &Val) { 10615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer setIntValue(C, Val.bitcastToAPInt()); 1062898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor } 10631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump}; 1064898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor 10651eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumpclass IntegerLiteral : public Expr { 1066c04db4feefa2b0dbbc6876cb4eeeee108aa6791dDouglas Gregor APIntStorage Num; 10671eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SourceLocation Loc; 1068c04db4feefa2b0dbbc6876cb4eeeee108aa6791dDouglas Gregor 1069c04db4feefa2b0dbbc6876cb4eeeee108aa6791dDouglas Gregor /// \brief Construct an empty integer literal. 10705549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek explicit IntegerLiteral(EmptyShell Empty) 10715549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek : Expr(IntegerLiteralClass, Empty) { } 1072c04db4feefa2b0dbbc6876cb4eeeee108aa6791dDouglas Gregor 1073c04db4feefa2b0dbbc6876cb4eeeee108aa6791dDouglas Gregorpublic: 1074866b5c03e3b9c01cf496ad97b85a05afc917345bTed Kremenek // type should be IntTy, LongTy, LongLongTy, UnsignedIntTy, UnsignedLongTy, 10755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // or UnsignedLongLongTy 1076313a81dd820c9b2c0203bdcd974c781a81e4f0cfDouglas Gregor IntegerLiteral(ASTContext &C, const llvm::APInt &V, 1077313a81dd820c9b2c0203bdcd974c781a81e4f0cfDouglas Gregor QualType type, SourceLocation l) 1078c04db4feefa2b0dbbc6876cb4eeeee108aa6791dDouglas Gregor : Expr(IntegerLiteralClass, type, VK_RValue, OK_Ordinary, false, false, 1079313a81dd820c9b2c0203bdcd974c781a81e4f0cfDouglas Gregor false, false), 1080313a81dd820c9b2c0203bdcd974c781a81e4f0cfDouglas Gregor Loc(l) { 1081313a81dd820c9b2c0203bdcd974c781a81e4f0cfDouglas Gregor assert(type->isIntegerType() && "Illegal type in IntegerLiteral"); 1082c04db4feefa2b0dbbc6876cb4eeeee108aa6791dDouglas Gregor assert(V.getBitWidth() == C.getIntWidth(type) && 1083313a81dd820c9b2c0203bdcd974c781a81e4f0cfDouglas Gregor "Integer type is not the correct size for constant."); 10841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump setValue(C, V); 10851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 10865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 10875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// \brief Returns a new integer literal with value 'V' and type 'type'. 10881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// \param type - either IntTy, LongTy, LongLongTy, UnsignedIntTy, 108977ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek /// UnsignedLongTy, or UnsignedLongLongTy which should match the size of V 109077ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek /// \param V - the value that the returned integer literal contains. 109177ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek static IntegerLiteral *Create(ASTContext &C, const llvm::APInt &V, 10925f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer QualType type, SourceLocation l); 10935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// \brief Returns a new empty integer literal. 10945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer static IntegerLiteral *Create(ASTContext &C, EmptyShell Empty); 10950518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl 10960518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl llvm::APInt getValue() const { return Num.getValue(); } 10975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceRange getSourceRange() const { return SourceRange(Loc); } 1098dbb36971c68ea944ac4b1fbe2d97fe7cca3b20acChris Lattner 1099dbb36971c68ea944ac4b1fbe2d97fe7cca3b20acChris Lattner /// \brief Retrieve the location of the literal. 1100dbb36971c68ea944ac4b1fbe2d97fe7cca3b20acChris Lattner SourceLocation getLocation() const { return Loc; } 1101dbb36971c68ea944ac4b1fbe2d97fe7cca3b20acChris Lattner 1102dbb36971c68ea944ac4b1fbe2d97fe7cca3b20acChris Lattner void setValue(ASTContext &C, const llvm::APInt &Val) { Num.setValue(C, Val); } 1103dbb36971c68ea944ac4b1fbe2d97fe7cca3b20acChris Lattner void setLocation(SourceLocation Location) { Loc = Location; } 1104dbb36971c68ea944ac4b1fbe2d97fe7cca3b20acChris Lattner 11055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer static bool classof(const Stmt *T) { 11065f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return T->getStmtClass() == IntegerLiteralClass; 11075baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall } 11085baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall static bool classof(const IntegerLiteral *) { return true; } 11095f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 11100799c53fc2bb7acf937c8a8e165033dba1a5aba3John McCall // Iterators 11115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer child_range children() { return child_range(); } 11120799c53fc2bb7acf937c8a8e165033dba1a5aba3John McCall}; 11131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass CharacterLiteral : public Expr { 11155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerpublic: 11169103bb27f4eefa0e0d7935387750e3aca24abc49Douglas Gregor enum CharacterKind { 1117de7e66256b1bdfcf6526994825a8c8fced52a31cEli Friedman Ascii, 11181eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Wide, 11190799c53fc2bb7acf937c8a8e165033dba1a5aba3John McCall UTF16, 11205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer UTF32 11210b0b77fa29c74c99a77548ed86ca8a04f7cf6b02Douglas Gregor }; 11221eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11232de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCallprivate: 11240b0b77fa29c74c99a77548ed86ca8a04f7cf6b02Douglas Gregor unsigned Value; 11250799c53fc2bb7acf937c8a8e165033dba1a5aba3John McCall SourceLocation Loc; 11260b0b77fa29c74c99a77548ed86ca8a04f7cf6b02Douglas Gregor unsigned Kind : 2; 11270b0b77fa29c74c99a77548ed86ca8a04f7cf6b02Douglas Gregorpublic: 11285549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek // type should be IntTy 11290b0b77fa29c74c99a77548ed86ca8a04f7cf6b02Douglas Gregor CharacterLiteral(unsigned value, CharacterKind kind, QualType type, 11300b0b77fa29c74c99a77548ed86ca8a04f7cf6b02Douglas Gregor SourceLocation l) 11315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer : Expr(CharacterLiteralClass, type, VK_RValue, OK_Ordinary, false, false, 11325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer false, false), 11330b0b77fa29c74c99a77548ed86ca8a04f7cf6b02Douglas Gregor Value(value), Loc(l), Kind(kind) { 11340b0b77fa29c74c99a77548ed86ca8a04f7cf6b02Douglas Gregor } 11355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 11362085fd6cd22ec5c268175251db10d7c60caf7aaaChris Lattner /// \brief Construct an empty character literal. 11372de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall CharacterLiteral(EmptyShell Empty) : Expr(CharacterLiteralClass, Empty) { } 11382085fd6cd22ec5c268175251db10d7c60caf7aaaChris Lattner 11395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceLocation getLocation() const { return Loc; } 11405a56ac30d04e8f0431a08980885662a47a6308aaTed Kremenek CharacterKind getKind() const { return static_cast<CharacterKind>(Kind); } 11412085fd6cd22ec5c268175251db10d7c60caf7aaaChris Lattner 11422de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall SourceRange getSourceRange() const { return SourceRange(Loc); } 11432085fd6cd22ec5c268175251db10d7c60caf7aaaChris Lattner 11445a56ac30d04e8f0431a08980885662a47a6308aaTed Kremenek unsigned getValue() const { return Value; } 11450799c53fc2bb7acf937c8a8e165033dba1a5aba3John McCall 11460799c53fc2bb7acf937c8a8e165033dba1a5aba3John McCall void setLocation(SourceLocation Location) { Loc = Location; } 11472de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall void setKind(CharacterKind kind) { Kind = kind; } 1148993cdca0fed7deb646e4654dfb2607227a497faaBenjamin Kramer void setValue(unsigned Val) { Value = Val; } 11492de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall 11502de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall static bool classof(const Stmt *T) { 1151993cdca0fed7deb646e4654dfb2607227a497faaBenjamin Kramer return T->getStmtClass() == CharacterLiteralClass; 11522de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall } 11532de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall static bool classof(const CharacterLiteral *) { return true; } 11542de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall 11552de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall // Iterators 11560799c53fc2bb7acf937c8a8e165033dba1a5aba3John McCall child_range children() { return child_range(); } 11571eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump}; 11585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 11595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass FloatingLiteral : public Expr { 11605f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer APFloatStorage Num; 11615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool IsExact : 1; 1162bc736fceca6f0bca31d16003a7587857190408fbDouglas Gregor SourceLocation Loc; 1163bc736fceca6f0bca31d16003a7587857190408fbDouglas Gregor 1164bc736fceca6f0bca31d16003a7587857190408fbDouglas Gregor FloatingLiteral(ASTContext &C, const llvm::APFloat &V, bool isexact, 1165bc736fceca6f0bca31d16003a7587857190408fbDouglas Gregor QualType Type, SourceLocation L) 1166bc736fceca6f0bca31d16003a7587857190408fbDouglas Gregor : Expr(FloatingLiteralClass, Type, VK_RValue, OK_Ordinary, false, false, 1167bc736fceca6f0bca31d16003a7587857190408fbDouglas Gregor false, false), 1168bc736fceca6f0bca31d16003a7587857190408fbDouglas Gregor IsExact(isexact), Loc(L) { 1169bc736fceca6f0bca31d16003a7587857190408fbDouglas Gregor setValue(C, V); 11705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 11715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 11725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// \brief Construct an empty floating-point literal. 11735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer explicit FloatingLiteral(EmptyShell Empty) 11745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer : Expr(FloatingLiteralClass, Empty), IsExact(false) { } 11755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 11765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerpublic: 11771eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump static FloatingLiteral *Create(ASTContext &C, const llvm::APFloat &V, 11781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump bool isexact, QualType Type, SourceLocation L); 11791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump static FloatingLiteral *Create(ASTContext &C, EmptyShell Empty); 11805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 11815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer llvm::APFloat getValue() const { return Num.getValue(); } 11821eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump void setValue(ASTContext &C, const llvm::APFloat &Val) { 118377ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek Num.setValue(C, Val); 118477ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek } 118577ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek 11865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool isExact() const { return IsExact; } 11875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void setExact(bool E) { IsExact = E; } 11888ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor 11898ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor /// getValueAsApproximateDouble - This returns the value as an inaccurate 11908ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor /// double. Note that this may cause loss of precision, but is useful for 11918ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor /// debugging dumps, etc. 11928ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor double getValueAsApproximateDouble() const; 1193c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt 11948ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor SourceLocation getLocation() const { return Loc; } 11958ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor void setLocation(SourceLocation L) { Loc = L; } 11968ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor 11978ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor SourceRange getSourceRange() const { return SourceRange(Loc); } 11988ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor 11998ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor static bool classof(const Stmt *T) { 1200c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt return T->getStmtClass() == FloatingLiteralClass; 12018ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor } 12028ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor static bool classof(const FloatingLiteral *) { return true; } 12038ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor 12048ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor // Iterators 12058ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor child_range children() { return child_range(); } 12068ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor}; 12078ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor 12088ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor/// ImaginaryLiteral - We support imaginary integer and floating point literals, 1209cc8a5d5f90bbbbcb46f342117b851b7e07ec34f1Douglas Gregor/// like "1.0i". We represent these as a wrapper around FloatingLiteral and 12108ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor/// IntegerLiteral classes. Instances of this class always have a Complex type 1211cc8a5d5f90bbbbcb46f342117b851b7e07ec34f1Douglas Gregor/// whose element type matches the subexpression. 12128ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor/// 1213cc8a5d5f90bbbbcb46f342117b851b7e07ec34f1Douglas Gregorclass ImaginaryLiteral : public Expr { 1214cc8a5d5f90bbbbcb46f342117b851b7e07ec34f1Douglas Gregor Stmt *Val; 1215cc8a5d5f90bbbbcb46f342117b851b7e07ec34f1Douglas Gregorpublic: 1216cc8a5d5f90bbbbcb46f342117b851b7e07ec34f1Douglas Gregor ImaginaryLiteral(Expr *val, QualType Ty) 1217cc8a5d5f90bbbbcb46f342117b851b7e07ec34f1Douglas Gregor : Expr(ImaginaryLiteralClass, Ty, VK_RValue, OK_Ordinary, false, false, 12188ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor false, false), 12198ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor Val(val) {} 12208ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor 12218ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor /// \brief Build an empty imaginary literal. 1222c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt explicit ImaginaryLiteral(EmptyShell Empty) 12238ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor : Expr(ImaginaryLiteralClass, Empty) { } 12248ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor 1225c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt const Expr *getSubExpr() const { return cast<Expr>(Val); } 12268ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor Expr *getSubExpr() { return cast<Expr>(Val); } 12278ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor void setSubExpr(Expr *E) { Val = E; } 1228c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt 12298ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor SourceRange getSourceRange() const { return Val->getSourceRange(); } 12308ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor static bool classof(const Stmt *T) { 12318ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor return T->getStmtClass() == ImaginaryLiteralClass; 12328ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor } 1233c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt static bool classof(const ImaginaryLiteral *) { return true; } 1234cc8a5d5f90bbbbcb46f342117b851b7e07ec34f1Douglas Gregor 12358ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor // Iterators 1236c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt child_range children() { return child_range(&Val, &Val+1); } 12378ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor}; 12388ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor 1239c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt/// StringLiteral - This represents a string literal expression, e.g. "foo" 12408ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor/// or L"bar" (wide strings). The actual string is returned by getStrData() 12418ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor/// is NOT null-terminated, and the length of the string is determined by 1242c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt/// calling getByteLength(). The C type for a string is always a 12438ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor/// ConstantArrayType. In C++, the char type is const qualified, in C it is 1244c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt/// not. 12458ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor/// 1246c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt/// Note that strings in C can be formed by concatenation of multiple string 12478ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor/// literal pptokens in translation phase #6. This keeps track of the locations 1248c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt/// of each of these pieces. 12498ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor/// 12508ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor/// Strings in C can also be truncated and extended by assigning into arrays, 12518ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor/// e.g. with constructs like: 1252c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt/// char X[2] = "foobar"; 12538ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor/// In this case, getByteLength() will return 6, but the string literal will 1254cc8a5d5f90bbbbcb46f342117b851b7e07ec34f1Douglas Gregor/// have type "char[2]". 1255cc8a5d5f90bbbbcb46f342117b851b7e07ec34f1Douglas Gregorclass StringLiteral : public Expr { 1256cc8a5d5f90bbbbcb46f342117b851b7e07ec34f1Douglas Gregorpublic: 1257cc8a5d5f90bbbbcb46f342117b851b7e07ec34f1Douglas Gregor enum StringKind { 1258c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt Ascii, 12598ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor Wide, 1260c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt UTF8, 12618ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor UTF16, 12628ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor UTF32 1263c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt }; 12648ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor 12658ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregorprivate: 12668ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor friend class ASTStmtReader; 12678ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor 12688ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor const char *StrData; 12698ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor unsigned ByteLength; 12708ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor unsigned NumConcatenated; 12718ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor unsigned Kind : 3; 12728ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor bool IsPascal : 1; 12738ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor SourceLocation TokLocs[1]; 1274cc8a5d5f90bbbbcb46f342117b851b7e07ec34f1Douglas Gregor 12758ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor StringLiteral(QualType Ty) : 1276c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt Expr(StringLiteralClass, Ty, VK_LValue, OK_Ordinary, false, false, false, 12778ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor false) {} 12788ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor 12798ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregorpublic: 1280c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt /// This is the "fully general" constructor that allows representation of 1281cc8a5d5f90bbbbcb46f342117b851b7e07ec34f1Douglas Gregor /// strings formed from multiple concatenated tokens. 1282cc8a5d5f90bbbbcb46f342117b851b7e07ec34f1Douglas Gregor static StringLiteral *Create(ASTContext &C, StringRef Str, StringKind Kind, 1283cc8a5d5f90bbbbcb46f342117b851b7e07ec34f1Douglas Gregor bool Pascal, QualType Ty, 1284c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt const SourceLocation *Loc, unsigned NumStrs); 1285cc8a5d5f90bbbbcb46f342117b851b7e07ec34f1Douglas Gregor 1286c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt /// Simple constructor for string literals made from one token. 12878ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor static StringLiteral *Create(ASTContext &C, StringRef Str, StringKind Kind, 12888ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor bool Pascal, QualType Ty, 12898ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor SourceLocation Loc) { 12908ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor return Create(C, Str, Kind, Pascal, Ty, &Loc, 1); 1291c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt } 12928ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor 12938ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor /// \brief Construct an empty string literal. 12948ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor static StringLiteral *CreateEmpty(ASTContext &C, unsigned NumStrs); 12958ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor 12968ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor StringRef getString() const { 1297c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt return StringRef(StrData, ByteLength); 12988ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor } 12998ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor 13008ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor unsigned getByteLength() const { return ByteLength; } 13018ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor 13028ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor /// \brief Sets the string data to the given string data. 13038ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor void setString(ASTContext &C, StringRef Str); 13048ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor 1305c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt StringKind getKind() const { return static_cast<StringKind>(Kind); } 1306c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt bool isAscii() const { return Kind == Ascii; } 13078ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor bool isWide() const { return Kind == Wide; } 1308c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt bool isUTF8() const { return Kind == UTF8; } 13098ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor bool isUTF16() const { return Kind == UTF16; } 13108ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor bool isUTF32() const { return Kind == UTF32; } 13118ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor bool isPascal() const { return IsPascal; } 13128ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor 13138ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor bool containsNonAsciiOrNull() const { 1314c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt StringRef Str = getString(); 13158ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor for (unsigned i = 0, e = Str.size(); i != e; ++i) 13168ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor if (!isascii(Str[i]) || !Str[i]) 1317c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt return true; 1318c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt return false; 1319c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt } 1320c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt /// getNumConcatenated - Get the number of string literal tokens that were 13218ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor /// concatenated in translation phase #6 to form this string literal. 13228ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor unsigned getNumConcatenated() const { return NumConcatenated; } 13238ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor 1324c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt SourceLocation getStrTokenLoc(unsigned TokNum) const { 13258ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor assert(TokNum < NumConcatenated && "Invalid tok number"); 13268ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor return TokLocs[TokNum]; 13278ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor } 13288ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor void setStrTokenLoc(unsigned TokNum, SourceLocation L) { 13298ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor assert(TokNum < NumConcatenated && "Invalid tok number"); 13308ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor TokLocs[TokNum] = L; 13318ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor } 13328ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor 13338ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor /// getLocationOfByte - Return a source location that points to the specified 1334c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt /// byte of this string literal. 13358ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor /// 13368ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor /// Strings are amazingly complex. They can be formed from multiple tokens 13378ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor /// and can have escape sequences in them in addition to the usual trigraph 13388ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor /// and escaped newline business. This routine handles this complexity. 13398ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor /// 13408ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor SourceLocation getLocationOfByte(unsigned ByteNo, const SourceManager &SM, 1341c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt const LangOptions &Features, 13428ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor const TargetInfo &Target) const; 13438ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor 13448ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor typedef const SourceLocation *tokloc_iterator; 13458ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor tokloc_iterator tokloc_begin() const { return TokLocs; } 13468ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor tokloc_iterator tokloc_end() const { return TokLocs+NumConcatenated; } 13478ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor 13488ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor SourceRange getSourceRange() const { 13498ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor return SourceRange(TokLocs[0], TokLocs[NumConcatenated-1]); 13508ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor } 1351c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt static bool classof(const Stmt *T) { 13528ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor return T->getStmtClass() == StringLiteralClass; 13538ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor } 13548ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor static bool classof(const StringLiteral *) { return true; } 13558ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor 13568ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor // Iterators 13578ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor child_range children() { return child_range(); } 13588ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor}; 13598ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor 13608ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor/// ParenExpr - This represents a parethesized expression, e.g. "(1)". This 13618ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor/// AST node is only formed if full location information is requested. 13628ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregorclass ParenExpr : public Expr { 13638ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor SourceLocation L, R; 13648ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor Stmt *Val; 13658ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregorpublic: 13668ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor ParenExpr(SourceLocation l, SourceLocation r, Expr *val) 1367c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt : Expr(ParenExprClass, val->getType(), 13688ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor val->getValueKind(), val->getObjectKind(), 13698ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor val->isTypeDependent(), val->isValueDependent(), 13708ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor val->isInstantiationDependent(), 13718ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor val->containsUnexpandedParameterPack()), 13728ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor L(l), R(r), Val(val) {} 13738ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor 13748ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor /// \brief Construct an empty parenthesized expression. 13758ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor explicit ParenExpr(EmptyShell Empty) 13768ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor : Expr(ParenExprClass, Empty) { } 13778ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor 13788ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor const Expr *getSubExpr() const { return cast<Expr>(Val); } 13798ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor Expr *getSubExpr() { return cast<Expr>(Val); } 13808ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor void setSubExpr(Expr *E) { Val = E; } 13818ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor 13828ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor SourceRange getSourceRange() const { return SourceRange(L, R); } 13838ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor 13848ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor /// \brief Get the location of the left parentheses '('. 13858ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor SourceLocation getLParen() const { return L; } 13868ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor void setLParen(SourceLocation Loc) { L = Loc; } 13870518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl 13880518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl /// \brief Get the location of the right parentheses ')'. 13890518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl SourceLocation getRParen() const { return R; } 13900518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl void setRParen(SourceLocation Loc) { R = Loc; } 13910518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl 1392d457589fc69dc7a9c80cd74d317c0b81a35a27c9Sebastian Redl static bool classof(const Stmt *T) { 1393a93c934af4fbf97cbe8e649d82e68ccacfe57c95John McCall return T->getStmtClass() == ParenExprClass; 1394d457589fc69dc7a9c80cd74d317c0b81a35a27c9Sebastian Redl } 1395d457589fc69dc7a9c80cd74d317c0b81a35a27c9Sebastian Redl static bool classof(const ParenExpr *) { return true; } 13965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 139742602bb40aefcc2751d4078ba88aacf4d965c9bdDouglas Gregor // Iterators 13985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer child_range children() { return child_range(&Val, &Val+1); } 1399a93c934af4fbf97cbe8e649d82e68ccacfe57c95John McCall}; 14000518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl 14010518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl 14022850784bda09416fc7e9d57f5baa36c9351c757cSebastian Redl/// UnaryOperator - This represents the unary-expression's (except sizeof and 1403ba49817c5b9f502602672861cf369fd0e53966e8Douglas Gregor/// alignof), the postinc/postdec operators from postfix-expression, and various 14042850784bda09416fc7e9d57f5baa36c9351c757cSebastian Redl/// extensions. 1405a93c934af4fbf97cbe8e649d82e68ccacfe57c95John McCall/// 1406ba49817c5b9f502602672861cf369fd0e53966e8Douglas Gregor/// Notes on various nodes: 1407a93c934af4fbf97cbe8e649d82e68ccacfe57c95John McCall/// 1408ba49817c5b9f502602672861cf369fd0e53966e8Douglas Gregor/// Real/Imag - These return the real/imag part of a complex operand. If 1409ba49817c5b9f502602672861cf369fd0e53966e8Douglas Gregor/// applied to a non-complex value, the former returns its operand and the 14101eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// later returns zero in the type of the operand. 1411ba49817c5b9f502602672861cf369fd0e53966e8Douglas Gregor/// 1412ba49817c5b9f502602672861cf369fd0e53966e8Douglas Gregorclass UnaryOperator : public Expr { 1413ba49817c5b9f502602672861cf369fd0e53966e8Douglas Gregorpublic: 1414ba49817c5b9f502602672861cf369fd0e53966e8Douglas Gregor typedef UnaryOperatorKind Opcode; 1415ba49817c5b9f502602672861cf369fd0e53966e8Douglas Gregor 1416ba49817c5b9f502602672861cf369fd0e53966e8Douglas Gregorprivate: 1417ba49817c5b9f502602672861cf369fd0e53966e8Douglas Gregor unsigned Opc : 5; 1418ba49817c5b9f502602672861cf369fd0e53966e8Douglas Gregor SourceLocation Loc; 1419d457589fc69dc7a9c80cd74d317c0b81a35a27c9Sebastian Redl Stmt *Val; 14200518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redlpublic: 14210b0b77fa29c74c99a77548ed86ca8a04f7cf6b02Douglas Gregor 14220b0b77fa29c74c99a77548ed86ca8a04f7cf6b02Douglas Gregor UnaryOperator(Expr *input, Opcode opc, QualType type, 14230b0b77fa29c74c99a77548ed86ca8a04f7cf6b02Douglas Gregor ExprValueKind VK, ExprObjectKind OK, SourceLocation l) 14240b0b77fa29c74c99a77548ed86ca8a04f7cf6b02Douglas Gregor : Expr(UnaryOperatorClass, type, VK, OK, 14255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer input->isTypeDependent() || type->isDependentType(), 14260b0b77fa29c74c99a77548ed86ca8a04f7cf6b02Douglas Gregor input->isValueDependent(), 14270b0b77fa29c74c99a77548ed86ca8a04f7cf6b02Douglas Gregor (input->isInstantiationDependent() || 14280518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl type->isInstantiationDependentType()), 14290518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl input->containsUnexpandedParameterPack()), 14305ab75172051a6d2ea71a80a79e81c65519fd3462John McCall Opc(opc), Loc(l), Val(input) {} 14315ab75172051a6d2ea71a80a79e81c65519fd3462John McCall 1432a93c934af4fbf97cbe8e649d82e68ccacfe57c95John McCall /// \brief Build an empty unary operator. 14330518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl explicit UnaryOperator(EmptyShell Empty) 14345ab75172051a6d2ea71a80a79e81c65519fd3462John McCall : Expr(UnaryOperatorClass, Empty), Opc(UO_AddrOf) { } 14350518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl 1436caae7b099a0324b7c15dc89a9b70969d5d7ce996Chris Lattner Opcode getOpcode() const { return static_cast<Opcode>(Opc); } 14370518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl void setOpcode(Opcode O) { Opc = O; } 1438d457589fc69dc7a9c80cd74d317c0b81a35a27c9Sebastian Redl 14390518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl Expr *getSubExpr() const { return cast<Expr>(Val); } 1440caae7b099a0324b7c15dc89a9b70969d5d7ce996Chris Lattner void setSubExpr(Expr *E) { Val = E; } 1441caae7b099a0324b7c15dc89a9b70969d5d7ce996Chris Lattner 1442caae7b099a0324b7c15dc89a9b70969d5d7ce996Chris Lattner /// getOperatorLoc - Return the location of the operator. 14430b0b77fa29c74c99a77548ed86ca8a04f7cf6b02Douglas Gregor SourceLocation getOperatorLoc() const { return Loc; } 14440b0b77fa29c74c99a77548ed86ca8a04f7cf6b02Douglas Gregor void setOperatorLoc(SourceLocation L) { Loc = L; } 1445a93c934af4fbf97cbe8e649d82e68ccacfe57c95John McCall 1446a93c934af4fbf97cbe8e649d82e68ccacfe57c95John McCall /// isPostfix - Return true if this is a postfix operation, like x++. 14471eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump static bool isPostfix(Opcode Op) { 14480b0b77fa29c74c99a77548ed86ca8a04f7cf6b02Douglas Gregor return Op == UO_PostInc || Op == UO_PostDec; 14490b0b77fa29c74c99a77548ed86ca8a04f7cf6b02Douglas Gregor } 14500518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl 14510518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl /// isPrefix - Return true if this is a prefix operation, like --x. 14520518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl static bool isPrefix(Opcode Op) { 14530518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl return Op == UO_PreInc || Op == UO_PreDec; 14540518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl } 14550518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl 145676e773a443be9f006610f46529e07d4c8d857680Chris Lattner bool isPrefix() const { return isPrefix(getOpcode()); } 14570b0b77fa29c74c99a77548ed86ca8a04f7cf6b02Douglas Gregor bool isPostfix() const { return isPostfix(getOpcode()); } 14580b0b77fa29c74c99a77548ed86ca8a04f7cf6b02Douglas Gregor bool isIncrementOp() const { 14590b0b77fa29c74c99a77548ed86ca8a04f7cf6b02Douglas Gregor return Opc == UO_PreInc || Opc == UO_PostInc; 14600b0b77fa29c74c99a77548ed86ca8a04f7cf6b02Douglas Gregor } 1461866b5c03e3b9c01cf496ad97b85a05afc917345bTed Kremenek bool isIncrementDecrementOp() const { 1462866b5c03e3b9c01cf496ad97b85a05afc917345bTed Kremenek return Opc <= UO_PreDec; 1463866b5c03e3b9c01cf496ad97b85a05afc917345bTed Kremenek } 1464866b5c03e3b9c01cf496ad97b85a05afc917345bTed Kremenek static bool isArithmeticOp(Opcode Op) { 14655f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return Op >= UO_Plus && Op <= UO_LNot; 14661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 14671eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump bool isArithmeticOp() const { return isArithmeticOp(getOpcode()); } 14685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 14690518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl /// getOpcodeStr - Turn an Opcode enum value into the punctuation char it 14701eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// corresponds to, e.g. "sizeof" or "[pre]++" 147177ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek static const char *getOpcodeStr(Opcode Op); 147277ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek 147377ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek /// \brief Retrieve the unary opcode that corresponds to the given 14745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// overloaded operator. 14755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer static Opcode getOverloadedOpcode(OverloadedOperatorKind OO, bool Postfix); 14765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 14775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// \brief Retrieve the overloaded operator kind that corresponds to 14785f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// the given unary opcode. 14795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer static OverloadedOperatorKind getOverloadedOperator(Opcode Opc); 14805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 14815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceRange getSourceRange() const { 148277ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek if (isPostfix()) 14831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return SourceRange(Val->getLocStart(), Loc); 14845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer else 14855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return SourceRange(Loc, Val->getLocEnd()); 14862324512285caac0332bbbc6e4cab6245d2a370a1Ted Kremenek } 148773d0d4fac161ed12926e010dcf8b448a8de6a2ecChris Lattner SourceLocation getExprLoc() const { return Loc; } 14882850784bda09416fc7e9d57f5baa36c9351c757cSebastian Redl 14892850784bda09416fc7e9d57f5baa36c9351c757cSebastian Redl static bool classof(const Stmt *T) { 14902850784bda09416fc7e9d57f5baa36c9351c757cSebastian Redl return T->getStmtClass() == UnaryOperatorClass; 14912850784bda09416fc7e9d57f5baa36c9351c757cSebastian Redl } 149273d0d4fac161ed12926e010dcf8b448a8de6a2ecChris Lattner static bool classof(const UnaryOperator *) { return true; } 149373d0d4fac161ed12926e010dcf8b448a8de6a2ecChris Lattner 149473d0d4fac161ed12926e010dcf8b448a8de6a2ecChris Lattner // Iterators 14951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump child_range children() { return child_range(&Val, &Val+1); } 1496cb2ca73c1d7e76cc1358ce51457d2d5837d84f9bDouglas Gregor}; 1497cb2ca73c1d7e76cc1358ce51457d2d5837d84f9bDouglas Gregor 1498cb2ca73c1d7e76cc1358ce51457d2d5837d84f9bDouglas Gregor/// OffsetOfExpr - [C99 7.17] - This represents an expression of the form 1499cb2ca73c1d7e76cc1358ce51457d2d5837d84f9bDouglas Gregor/// offsetof(record-type, member-designator). For example, given: 15002324512285caac0332bbbc6e4cab6245d2a370a1Ted Kremenek/// @code 15012324512285caac0332bbbc6e4cab6245d2a370a1Ted Kremenek/// struct S { 15022324512285caac0332bbbc6e4cab6245d2a370a1Ted Kremenek/// float f; 15032324512285caac0332bbbc6e4cab6245d2a370a1Ted Kremenek/// double d; 15042324512285caac0332bbbc6e4cab6245d2a370a1Ted Kremenek/// }; 150533fd5c124aac15bab7cad95e4e0e7761356d2c06Christopher Lamb/// struct T { 150633fd5c124aac15bab7cad95e4e0e7761356d2c06Christopher Lamb/// int i; 150733fd5c124aac15bab7cad95e4e0e7761356d2c06Christopher Lamb/// struct S s[10]; 150833fd5c124aac15bab7cad95e4e0e7761356d2c06Christopher Lamb/// }; 15095549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek/// @endcode 15105549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek/// we can represent and evaluate the expression @c offsetof(struct T, s[2].d). 1511cb2ca73c1d7e76cc1358ce51457d2d5837d84f9bDouglas Gregor 1512cb2ca73c1d7e76cc1358ce51457d2d5837d84f9bDouglas Gregorclass OffsetOfExpr : public Expr { 15135549976193e34417d4474a5f4a514268ef6666c7Ted Kremenekpublic: 15145549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek // __builtin_offsetof(type, identifier(.identifier|[expr])*) 1515cb2ca73c1d7e76cc1358ce51457d2d5837d84f9bDouglas Gregor class OffsetOfNode { 15161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump public: 15171eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// \brief The kind of offsetof node we have. 15185549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek enum Kind { 151977ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek /// \brief An index into an array. 15201eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Array = 0x00, 15211eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// \brief A field. 15225549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek Field = 0x01, 15232324512285caac0332bbbc6e4cab6245d2a370a1Ted Kremenek /// \brief A field in a dependent type, known only by its name. 15241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Identifier = 0x02, 15251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// \brief An implicit indirection through a C++ base class, when the 15265549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek /// field found is in a base class. 15272324512285caac0332bbbc6e4cab6245d2a370a1Ted Kremenek Base = 0x03 15281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump }; 152977ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek 15305549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek private: 15311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump enum { MaskBits = 2, Mask = 0x03 }; 15321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 15331eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// \brief The source range that covers this part of the designator. 153477ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek SourceRange Range; 15355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 15361eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// \brief The data describing the designator, which comes in three 1537026dc96ac6ece60da5e1b98e2a71bd0ff0939fd8Chris Lattner /// different forms, depending on the lower two bits. 1538cb2ca73c1d7e76cc1358ce51457d2d5837d84f9bDouglas Gregor /// - An unsigned index into the array of Expr*'s stored after this node 1539cb2ca73c1d7e76cc1358ce51457d2d5837d84f9bDouglas Gregor /// in memory, for [constant-expression] designators. 15405cd9d6daf3acd4cc87fecebd81d9495b9e4ba9cdChris Lattner /// - A FieldDecl*, for references to a known field. 15415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// - An IdentifierInfo*, for references to a field with a given name 15421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// when the class type is dependent. 15431eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// - A CXXBaseSpecifier*, for references that look at a field in a 15445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// base class. 15455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer uintptr_t Data; 15461eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 154777ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek public: 154877ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek /// \brief Create an offsetof node that refers to an array element. 154977ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek OffsetOfNode(SourceLocation LBracketLoc, unsigned Index, 15505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceLocation RBracketLoc) 15515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer : Range(LBracketLoc, RBracketLoc), Data((Index << 2) | Array) { } 15525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1553b4609806e9232593ece09ce08b630836e825865cDouglas Gregor /// \brief Create an offsetof node that refers to a field. 15541eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump OffsetOfNode(SourceLocation DotLoc, FieldDecl *Field, 1555b4609806e9232593ece09ce08b630836e825865cDouglas Gregor SourceLocation NameLoc) 15561eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump : Range(DotLoc.isValid()? DotLoc : NameLoc, NameLoc), 1557b4609806e9232593ece09ce08b630836e825865cDouglas Gregor Data(reinterpret_cast<uintptr_t>(Field) | OffsetOfNode::Field) { } 1558b4609806e9232593ece09ce08b630836e825865cDouglas Gregor 15595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// \brief Create an offsetof node that refers to an identifier. 156077ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek OffsetOfNode(SourceLocation DotLoc, IdentifierInfo *Name, 15615549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek SourceLocation NameLoc) 15625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer : Range(DotLoc.isValid()? DotLoc : NameLoc, NameLoc), 15635f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Data(reinterpret_cast<uintptr_t>(Name) | Identifier) { } 15641eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1565b4609806e9232593ece09ce08b630836e825865cDouglas Gregor /// \brief Create an offsetof node that refers into a C++ base class. 1566b4609806e9232593ece09ce08b630836e825865cDouglas Gregor explicit OffsetOfNode(const CXXBaseSpecifier *Base) 1567668bf91d31265b6ea8c3eb854ba450857701f269Ted Kremenek : Range(), Data(reinterpret_cast<uintptr_t>(Base) | OffsetOfNode::Base) {} 1568668bf91d31265b6ea8c3eb854ba450857701f269Ted Kremenek 156942602bb40aefcc2751d4078ba88aacf4d965c9bdDouglas Gregor /// \brief Determine what kind of offsetof node this is. 15705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Kind getKind() const { 15711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return static_cast<Kind>(Data & Mask); 15725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 15731eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 15741f0d0133b0e8d1f01f63951ee04927796b34740dDouglas Gregor /// \brief For an array element node, returns the index into the array 1575ba0a9006dbc4814e1e35f82812cb5a1dad65e8b8Argyrios Kyrtzidis /// of expressions. 15761f0d0133b0e8d1f01f63951ee04927796b34740dDouglas Gregor unsigned getArrayExprIndex() const { 15775549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek assert(getKind() == Array); 15785549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek return Data >> 2; 157918b2515e1bf8c86a4900792692e42fe1296be28dChris Lattner } 1580a00425414e8c209cabc25d1826b200aeb94259afZhongxing Xu 1581d20254f2875d0004c57ee766f258dbcee29f4841Nuno Lopes /// \brief For a field offsetof node, returns the field. 1582d20254f2875d0004c57ee766f258dbcee29f4841Nuno Lopes FieldDecl *getField() const { 1583d20254f2875d0004c57ee766f258dbcee29f4841Nuno Lopes assert(getKind() == Field); 1584d20254f2875d0004c57ee766f258dbcee29f4841Nuno Lopes return reinterpret_cast<FieldDecl *>(Data & ~(uintptr_t)Mask); 1585d20254f2875d0004c57ee766f258dbcee29f4841Nuno Lopes } 1586a00425414e8c209cabc25d1826b200aeb94259afZhongxing Xu 1587a00425414e8c209cabc25d1826b200aeb94259afZhongxing Xu /// \brief For a field or identifier offsetof node, returns the name of 1588bc8d42c6f1565c0b2f93ad524edebfd7a4e6cac6Chris Lattner /// the field. 1589bc8d42c6f1565c0b2f93ad524edebfd7a4e6cac6Chris Lattner IdentifierInfo *getFieldName() const; 1590bc8d42c6f1565c0b2f93ad524edebfd7a4e6cac6Chris Lattner 1591a00425414e8c209cabc25d1826b200aeb94259afZhongxing Xu /// \brief For a base class node, returns the base specifier. 15925f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer CXXBaseSpecifier *getBase() const { 15935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer assert(getKind() == Base); 15945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return reinterpret_cast<CXXBaseSpecifier *>(Data & ~(uintptr_t)Mask); 15951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 15965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 15975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// \brief Retrieve the source range that covers this offsetof node. 15985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// 15995549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek /// For an array element node, the source range contains the locations of 16005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// the square brackets. For a field or identifier node, the source range 16015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// contains the location of the period (if there is one) and the 16025f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// identifier. 16035549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek SourceRange getSourceRange() const { return Range; } 16045f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer }; 16051eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1606934f276cc5b45e19cd12ebb2d04fd7972a23865cSteve Naroffprivate: 1607934f276cc5b45e19cd12ebb2d04fd7972a23865cSteve Naroff 1608934f276cc5b45e19cd12ebb2d04fd7972a23865cSteve Naroff SourceLocation OperatorLoc, RParenLoc; 1609934f276cc5b45e19cd12ebb2d04fd7972a23865cSteve Naroff // Base type; 1610934f276cc5b45e19cd12ebb2d04fd7972a23865cSteve Naroff TypeSourceInfo *TSInfo; 16111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Number of sub-components (i.e. instances of OffsetOfNode). 1612d18b3299debb7b0dbd9d34d9369189dc98c87f53Chris Lattner unsigned NumComps; 1613d18b3299debb7b0dbd9d34d9369189dc98c87f53Chris Lattner // Number of sub-expressions (i.e. array subscript expressions). 1614d18b3299debb7b0dbd9d34d9369189dc98c87f53Chris Lattner unsigned NumExprs; 16158189cde56b4f6f938cd65f53c932fe1860d0204cTed Kremenek 16161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump OffsetOfExpr(ASTContext &C, QualType type, 16175549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek SourceLocation OperatorLoc, TypeSourceInfo *tsi, 16185549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek OffsetOfNode* compsPtr, unsigned numComps, 16191eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Expr** exprsPtr, unsigned numExprs, 1620d18b3299debb7b0dbd9d34d9369189dc98c87f53Chris Lattner SourceLocation RParenLoc); 1621d18b3299debb7b0dbd9d34d9369189dc98c87f53Chris Lattner 16225549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek explicit OffsetOfExpr(unsigned numComps, unsigned numExprs) 16235549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek : Expr(OffsetOfExprClass, EmptyShell()), 16241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump TSInfo(0), NumComps(numComps), NumExprs(numExprs) {} 16255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 16265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerpublic: 16275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 16285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer static OffsetOfExpr *Create(ASTContext &C, QualType type, 1629cb888967400a03504c88acedd5248d6778a82f46Chris Lattner SourceLocation OperatorLoc, TypeSourceInfo *tsi, 1630cb888967400a03504c88acedd5248d6778a82f46Chris Lattner OffsetOfNode* compsPtr, unsigned numComps, 16313c385e5f8d9008fff18597ca302be19fa86e51f6Douglas Gregor Expr** exprsPtr, unsigned numExprs, 16321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SourceLocation RParenLoc); 16331eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16341eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump static OffsetOfExpr *CreateEmpty(ASTContext &C, 16356dde78f744382a5627a04f984a97049e0c4b5e73Anders Carlsson unsigned NumComps, unsigned NumExprs); 16366dde78f744382a5627a04f984a97049e0c4b5e73Anders Carlsson 16371eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// getOperatorLoc - Return the location of the operator. 1638d18b3299debb7b0dbd9d34d9369189dc98c87f53Chris Lattner SourceLocation getOperatorLoc() const { return OperatorLoc; } 16391f0d0133b0e8d1f01f63951ee04927796b34740dDouglas Gregor void setOperatorLoc(SourceLocation L) { OperatorLoc = L; } 1640866b5c03e3b9c01cf496ad97b85a05afc917345bTed Kremenek 16411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// \brief Return the location of the right parentheses. 164277ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek SourceLocation getRParenLoc() const { return RParenLoc; } 16435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void setRParenLoc(SourceLocation R) { RParenLoc = R; } 16441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16451eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump TypeSourceInfo *getTypeSourceInfo() const { 16464bfe1968410ea8ffe3b4f629addd7c4bcf484765Sean Hunt return TSInfo; 16474bfe1968410ea8ffe3b4f629addd7c4bcf484765Sean Hunt } 16485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void setTypeSourceInfo(TypeSourceInfo *tsi) { 16495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer TSInfo = tsi; 165088a3514f36de96b19cdf50141c640df1a5f13f6cDouglas Gregor } 165177ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek 165277ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek const OffsetOfNode &getComponent(unsigned Idx) const { 165377ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek assert(Idx < NumComps && "Subscript out of range"); 16545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return reinterpret_cast<const OffsetOfNode *> (this + 1)[Idx]; 16555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 1656ddca44e86281bb7dcf5fdcaf1563434c524e3861Chris Lattner 16575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void setComponent(unsigned Idx, OffsetOfNode ON) { 16585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer assert(Idx < NumComps && "Subscript out of range"); 16596bb8017bb9e828d118e15e59d71c66bba323c364John McCall reinterpret_cast<OffsetOfNode *> (this + 1)[Idx] = ON; 16606bb8017bb9e828d118e15e59d71c66bba323c364John McCall } 1661161755a09898c95d21bfff33707da9ca41cd53c5John McCall 16626bb8017bb9e828d118e15e59d71c66bba323c364John McCall unsigned getNumComponents() const { 16636bb8017bb9e828d118e15e59d71c66bba323c364John McCall return NumComps; 1664ddca44e86281bb7dcf5fdcaf1563434c524e3861Chris Lattner } 1665ddca44e86281bb7dcf5fdcaf1563434c524e3861Chris Lattner 16665549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek Expr* getIndexExpr(unsigned Idx) { 16671eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump assert(Idx < NumExprs && "Subscript out of range"); 1668ddca44e86281bb7dcf5fdcaf1563434c524e3861Chris Lattner return reinterpret_cast<Expr **>( 1669ddca44e86281bb7dcf5fdcaf1563434c524e3861Chris Lattner reinterpret_cast<OffsetOfNode *>(this+1) + NumComps)[Idx]; 1670f595cc41c4d95fe323f8a2b209523de9956f874dEli Friedman } 16711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const Expr *getIndexExpr(unsigned Idx) const { 1672ddca44e86281bb7dcf5fdcaf1563434c524e3861Chris Lattner return const_cast<OffsetOfExpr*>(this)->getIndexExpr(Idx); 16735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 16741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16752577743c5650c646fb705df01403707e94f2df04Abramo Bagnara void setIndexExpr(unsigned Idx, Expr* E) { 16762577743c5650c646fb705df01403707e94f2df04Abramo Bagnara assert(Idx < NumComps && "Subscript out of range"); 16772577743c5650c646fb705df01403707e94f2df04Abramo Bagnara reinterpret_cast<Expr **>( 16782577743c5650c646fb705df01403707e94f2df04Abramo Bagnara reinterpret_cast<OffsetOfNode *>(this+1) + NumComps)[Idx] = E; 1679ddca44e86281bb7dcf5fdcaf1563434c524e3861Chris Lattner } 168083f6faf37d9bf58986bedc9bc0ea897a56b4dbadDouglas Gregor 16811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump unsigned getNumExpressions() const { 168283f6faf37d9bf58986bedc9bc0ea897a56b4dbadDouglas Gregor return NumExprs; 16836bb8017bb9e828d118e15e59d71c66bba323c364John McCall } 16846bb8017bb9e828d118e15e59d71c66bba323c364John McCall 1685c4bf26fbdff42967d660f505a83f75a4df2cc752Douglas Gregor SourceRange getSourceRange() const { 16866bb8017bb9e828d118e15e59d71c66bba323c364John McCall return SourceRange(OperatorLoc, RParenLoc); 16871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 1688c4bf26fbdff42967d660f505a83f75a4df2cc752Douglas Gregor 1689c4bf26fbdff42967d660f505a83f75a4df2cc752Douglas Gregor static bool classof(const Stmt *T) { 1690c4bf26fbdff42967d660f505a83f75a4df2cc752Douglas Gregor return T->getStmtClass() == OffsetOfExprClass; 1691c4bf26fbdff42967d660f505a83f75a4df2cc752Douglas Gregor } 16926bb8017bb9e828d118e15e59d71c66bba323c364John McCall 1693c4bf26fbdff42967d660f505a83f75a4df2cc752Douglas Gregor static bool classof(const OffsetOfExpr *) { return true; } 16941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 169583f6faf37d9bf58986bedc9bc0ea897a56b4dbadDouglas Gregor // Iterators 16966bb8017bb9e828d118e15e59d71c66bba323c364John McCall child_range children() { 16976bb8017bb9e828d118e15e59d71c66bba323c364John McCall Stmt **begin = 16986bb8017bb9e828d118e15e59d71c66bba323c364John McCall reinterpret_cast<Stmt**>(reinterpret_cast<OffsetOfNode*>(this + 1) 169983f6faf37d9bf58986bedc9bc0ea897a56b4dbadDouglas Gregor + NumComps); 170083f6faf37d9bf58986bedc9bc0ea897a56b4dbadDouglas Gregor return child_range(begin, begin + NumExprs); 170183f6faf37d9bf58986bedc9bc0ea897a56b4dbadDouglas Gregor } 17026bb8017bb9e828d118e15e59d71c66bba323c364John McCall}; 1703c4bf26fbdff42967d660f505a83f75a4df2cc752Douglas Gregor 1704c4bf26fbdff42967d660f505a83f75a4df2cc752Douglas Gregor/// UnaryExprOrTypeTraitExpr - expression with either a type or (unevaluated) 17051eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// expression operand. Used for sizeof/alignof (C99 6.5.3.4) and 17065f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// vec_step (OpenCL 1.1 6.11.12). 1707f595cc41c4d95fe323f8a2b209523de9956f874dEli Friedmanclass UnaryExprOrTypeTraitExpr : public Expr { 17082577743c5650c646fb705df01403707e94f2df04Abramo Bagnara unsigned Kind : 2; 17092577743c5650c646fb705df01403707e94f2df04Abramo Bagnara bool isType : 1; // true if operand is a type, false if an expression 17102577743c5650c646fb705df01403707e94f2df04Abramo Bagnara union { 17112577743c5650c646fb705df01403707e94f2df04Abramo Bagnara TypeSourceInfo *Ty; 17122577743c5650c646fb705df01403707e94f2df04Abramo Bagnara Stmt *Ex; 17132577743c5650c646fb705df01403707e94f2df04Abramo Bagnara } Argument; 17142577743c5650c646fb705df01403707e94f2df04Abramo Bagnara SourceLocation OpLoc, RParenLoc; 17152577743c5650c646fb705df01403707e94f2df04Abramo Bagnara 17162577743c5650c646fb705df01403707e94f2df04Abramo Bagnarapublic: 17172577743c5650c646fb705df01403707e94f2df04Abramo Bagnara UnaryExprOrTypeTraitExpr(UnaryExprOrTypeTrait ExprKind, TypeSourceInfo *TInfo, 17182577743c5650c646fb705df01403707e94f2df04Abramo Bagnara QualType resultType, SourceLocation op, 17192577743c5650c646fb705df01403707e94f2df04Abramo Bagnara SourceLocation rp) : 17202577743c5650c646fb705df01403707e94f2df04Abramo Bagnara Expr(UnaryExprOrTypeTraitExprClass, resultType, VK_RValue, OK_Ordinary, 17212577743c5650c646fb705df01403707e94f2df04Abramo Bagnara false, // Never type-dependent (C++ [temp.dep.expr]p3). 1722f595cc41c4d95fe323f8a2b209523de9956f874dEli Friedman // Value-dependent if the argument is type-dependent. 17231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump TInfo->getType()->isDependentType(), 1724ffce2df6ae280d354d51371282a579df1eb86876Anders Carlsson TInfo->getType()->isInstantiationDependentType(), 17252577743c5650c646fb705df01403707e94f2df04Abramo Bagnara TInfo->getType()->containsUnexpandedParameterPack()), 17262577743c5650c646fb705df01403707e94f2df04Abramo Bagnara Kind(ExprKind), isType(true), OpLoc(op), RParenLoc(rp) { 17276bb8017bb9e828d118e15e59d71c66bba323c364John McCall Argument.Ty = TInfo; 1728510190777c4bd53e960eea4665b204778fec1b64Eli Friedman } 17291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 173083f6faf37d9bf58986bedc9bc0ea897a56b4dbadDouglas Gregor UnaryExprOrTypeTraitExpr(UnaryExprOrTypeTrait ExprKind, Expr *E, 1731161755a09898c95d21bfff33707da9ca41cd53c5John McCall QualType resultType, SourceLocation op, 17322577743c5650c646fb705df01403707e94f2df04Abramo Bagnara SourceLocation rp) : 1733d5532b6cfff2977e0c59fa6ead7f7973984a620dJohn McCall Expr(UnaryExprOrTypeTraitExprClass, resultType, VK_RValue, OK_Ordinary, 1734c4bf26fbdff42967d660f505a83f75a4df2cc752Douglas Gregor false, // Never type-dependent (C++ [temp.dep.expr]p3). 17351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Value-dependent if the argument is type-dependent. 173688a3514f36de96b19cdf50141c640df1a5f13f6cDouglas Gregor E->isTypeDependent(), 17375549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek E->isInstantiationDependent(), 173857e8b05fe9ba03d410db9c161e032cb79c9ab5baDouglas Gregor E->containsUnexpandedParameterPack()), 173957e8b05fe9ba03d410db9c161e032cb79c9ab5baDouglas Gregor Kind(ExprKind), isType(false), OpLoc(op), RParenLoc(rp) { 174057e8b05fe9ba03d410db9c161e032cb79c9ab5baDouglas Gregor Argument.Ex = E; 174157e8b05fe9ba03d410db9c161e032cb79c9ab5baDouglas Gregor } 174257e8b05fe9ba03d410db9c161e032cb79c9ab5baDouglas Gregor 1743f595cc41c4d95fe323f8a2b209523de9956f874dEli Friedman /// \brief Construct an empty sizeof/alignof expression. 1744f595cc41c4d95fe323f8a2b209523de9956f874dEli Friedman explicit UnaryExprOrTypeTraitExpr(EmptyShell Empty) 17451f0d0133b0e8d1f01f63951ee04927796b34740dDouglas Gregor : Expr(UnaryExprOrTypeTraitExprClass, Empty) { } 17466bb8017bb9e828d118e15e59d71c66bba323c364John McCall 1747161755a09898c95d21bfff33707da9ca41cd53c5John McCall UnaryExprOrTypeTrait getKind() const { 17486bb8017bb9e828d118e15e59d71c66bba323c364John McCall return static_cast<UnaryExprOrTypeTrait>(Kind); 1749161755a09898c95d21bfff33707da9ca41cd53c5John McCall } 1750161755a09898c95d21bfff33707da9ca41cd53c5John McCall void setKind(UnaryExprOrTypeTrait K) { Kind = K; } 17516bb8017bb9e828d118e15e59d71c66bba323c364John McCall 17526bb8017bb9e828d118e15e59d71c66bba323c364John McCall bool isArgumentType() const { return isType; } 17536bb8017bb9e828d118e15e59d71c66bba323c364John McCall QualType getArgumentType() const { 17541eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return getArgumentTypeInfo()->getType(); 17550979c805475d1ba49b5d6ef93c4d2ce6d2eab6edDouglas Gregor } 17560979c805475d1ba49b5d6ef93c4d2ce6d2eab6edDouglas Gregor TypeSourceInfo *getArgumentTypeInfo() const { 17576bb8017bb9e828d118e15e59d71c66bba323c364John McCall assert(isArgumentType() && "calling getArgumentType() when arg is expr"); 17581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return Argument.Ty; 175983f6faf37d9bf58986bedc9bc0ea897a56b4dbadDouglas Gregor } 176083f6faf37d9bf58986bedc9bc0ea897a56b4dbadDouglas Gregor Expr *getArgumentExpr() { 176183f6faf37d9bf58986bedc9bc0ea897a56b4dbadDouglas Gregor assert(!isArgumentType() && "calling getArgumentExpr() when arg is type"); 17621eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return static_cast<Expr*>(Argument.Ex); 17636bb8017bb9e828d118e15e59d71c66bba323c364John McCall } 176483f6faf37d9bf58986bedc9bc0ea897a56b4dbadDouglas Gregor const Expr *getArgumentExpr() const { 17651eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return const_cast<UnaryExprOrTypeTraitExpr*>(this)->getArgumentExpr(); 176683f6faf37d9bf58986bedc9bc0ea897a56b4dbadDouglas Gregor } 176783f6faf37d9bf58986bedc9bc0ea897a56b4dbadDouglas Gregor 17681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump void setArgument(Expr *E) { Argument.Ex = E; isType = false; } 17691eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump void setArgument(TypeSourceInfo *TInfo) { 177083f6faf37d9bf58986bedc9bc0ea897a56b4dbadDouglas Gregor Argument.Ty = TInfo; 177183f6faf37d9bf58986bedc9bc0ea897a56b4dbadDouglas Gregor isType = true; 17721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 17736bb8017bb9e828d118e15e59d71c66bba323c364John McCall 177483f6faf37d9bf58986bedc9bc0ea897a56b4dbadDouglas Gregor /// Gets the argument type, or the type of the argument expression, whichever 17751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// is appropriate. 177683f6faf37d9bf58986bedc9bc0ea897a56b4dbadDouglas Gregor QualType getTypeOfArgument() const { 177783f6faf37d9bf58986bedc9bc0ea897a56b4dbadDouglas Gregor return isArgumentType() ? getArgumentType() : getArgumentExpr()->getType(); 1778c4bf26fbdff42967d660f505a83f75a4df2cc752Douglas Gregor } 1779c4bf26fbdff42967d660f505a83f75a4df2cc752Douglas Gregor 1780c4bf26fbdff42967d660f505a83f75a4df2cc752Douglas Gregor SourceLocation getOperatorLoc() const { return OpLoc; } 1781096832c5ed5b9106fa177ebc148489760c3bc496John McCall void setOperatorLoc(SourceLocation L) { OpLoc = L; } 17821eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1783c4bf26fbdff42967d660f505a83f75a4df2cc752Douglas Gregor SourceLocation getRParenLoc() const { return RParenLoc; } 17841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump void setRParenLoc(SourceLocation L) { RParenLoc = L; } 1785d5532b6cfff2977e0c59fa6ead7f7973984a620dJohn McCall 1786d5532b6cfff2977e0c59fa6ead7f7973984a620dJohn McCall SourceRange getSourceRange() const { 1787d5532b6cfff2977e0c59fa6ead7f7973984a620dJohn McCall return SourceRange(OpLoc, RParenLoc); 1788096832c5ed5b9106fa177ebc148489760c3bc496John McCall } 1789096832c5ed5b9106fa177ebc148489760c3bc496John McCall 1790096832c5ed5b9106fa177ebc148489760c3bc496John McCall static bool classof(const Stmt *T) { 1791096832c5ed5b9106fa177ebc148489760c3bc496John McCall return T->getStmtClass() == UnaryExprOrTypeTraitExprClass; 1792096832c5ed5b9106fa177ebc148489760c3bc496John McCall } 1793096832c5ed5b9106fa177ebc148489760c3bc496John McCall static bool classof(const UnaryExprOrTypeTraitExpr *) { return true; } 1794096832c5ed5b9106fa177ebc148489760c3bc496John McCall 1795096832c5ed5b9106fa177ebc148489760c3bc496John McCall // Iterators 1796096832c5ed5b9106fa177ebc148489760c3bc496John McCall child_range children(); 1797096832c5ed5b9106fa177ebc148489760c3bc496John McCall}; 1798096832c5ed5b9106fa177ebc148489760c3bc496John McCall 1799096832c5ed5b9106fa177ebc148489760c3bc496John McCall//===----------------------------------------------------------------------===// 1800096832c5ed5b9106fa177ebc148489760c3bc496John McCall// Postfix Operators. 1801096832c5ed5b9106fa177ebc148489760c3bc496John McCall//===----------------------------------------------------------------------===// 1802096832c5ed5b9106fa177ebc148489760c3bc496John McCall 1803096832c5ed5b9106fa177ebc148489760c3bc496John McCall/// ArraySubscriptExpr - [C99 6.5.2.1] Array Subscripting. 1804096832c5ed5b9106fa177ebc148489760c3bc496John McCallclass ArraySubscriptExpr : public Expr { 1805096832c5ed5b9106fa177ebc148489760c3bc496John McCall enum { LHS, RHS, END_EXPR=2 }; 1806096832c5ed5b9106fa177ebc148489760c3bc496John McCall Stmt* SubExprs[END_EXPR]; 1807096832c5ed5b9106fa177ebc148489760c3bc496John McCall SourceLocation RBracketLoc; 1808096832c5ed5b9106fa177ebc148489760c3bc496John McCallpublic: 1809096832c5ed5b9106fa177ebc148489760c3bc496John McCall ArraySubscriptExpr(Expr *lhs, Expr *rhs, QualType t, 1810096832c5ed5b9106fa177ebc148489760c3bc496John McCall ExprValueKind VK, ExprObjectKind OK, 1811096832c5ed5b9106fa177ebc148489760c3bc496John McCall SourceLocation rbracketloc) 1812096832c5ed5b9106fa177ebc148489760c3bc496John McCall : Expr(ArraySubscriptExprClass, t, VK, OK, 1813096832c5ed5b9106fa177ebc148489760c3bc496John McCall lhs->isTypeDependent() || rhs->isTypeDependent(), 1814096832c5ed5b9106fa177ebc148489760c3bc496John McCall lhs->isValueDependent() || rhs->isValueDependent(), 1815096832c5ed5b9106fa177ebc148489760c3bc496John McCall (lhs->isInstantiationDependent() || 1816096832c5ed5b9106fa177ebc148489760c3bc496John McCall rhs->isInstantiationDependent()), 1817d5532b6cfff2977e0c59fa6ead7f7973984a620dJohn McCall (lhs->containsUnexpandedParameterPack() || 1818c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt rhs->containsUnexpandedParameterPack())), 18191eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump RBracketLoc(rbracketloc) { 1820c4bf26fbdff42967d660f505a83f75a4df2cc752Douglas Gregor SubExprs[LHS] = lhs; 18211eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SubExprs[RHS] = rhs; 1822c4bf26fbdff42967d660f505a83f75a4df2cc752Douglas Gregor } 1823c4bf26fbdff42967d660f505a83f75a4df2cc752Douglas Gregor 18241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// \brief Create an empty array subscript expression. 1825096832c5ed5b9106fa177ebc148489760c3bc496John McCall explicit ArraySubscriptExpr(EmptyShell Shell) 1826c4bf26fbdff42967d660f505a83f75a4df2cc752Douglas Gregor : Expr(ArraySubscriptExprClass, Shell) { } 18271eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1828c4bf26fbdff42967d660f505a83f75a4df2cc752Douglas Gregor /// An array access can be written A[4] or 4[A] (both are equivalent). 1829c4bf26fbdff42967d660f505a83f75a4df2cc752Douglas Gregor /// - getBase() and getIdx() always present the normalized view: A[4]. 1830833ca991c1bfc967f0995974ca86f66ba1f666b5John McCall /// In this case getBase() returns "A" and getIdx() returns "4". 1831c4bf26fbdff42967d660f505a83f75a4df2cc752Douglas Gregor /// - getLHS() and getRHS() present the syntactic view. e.g. for 18321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// 4[A] getLHS() returns "4". 18331eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// Note: Because vector element access is also written A[4] we must 1834096832c5ed5b9106fa177ebc148489760c3bc496John McCall /// predicate the format conversion in getBase and getIdx only on the 1835c4bf26fbdff42967d660f505a83f75a4df2cc752Douglas Gregor /// the type of the RHS, as it is possible for the LHS to be a vector of 18361eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// integer type 1837c4bf26fbdff42967d660f505a83f75a4df2cc752Douglas Gregor Expr *getLHS() { return cast<Expr>(SubExprs[LHS]); } 1838c4bf26fbdff42967d660f505a83f75a4df2cc752Douglas Gregor const Expr *getLHS() const { return cast<Expr>(SubExprs[LHS]); } 18391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump void setLHS(Expr *E) { SubExprs[LHS] = E; } 1840c4bf26fbdff42967d660f505a83f75a4df2cc752Douglas Gregor 18411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Expr *getRHS() { return cast<Expr>(SubExprs[RHS]); } 18421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const Expr *getRHS() const { return cast<Expr>(SubExprs[RHS]); } 1843096832c5ed5b9106fa177ebc148489760c3bc496John McCall void setRHS(Expr *E) { SubExprs[RHS] = E; } 1844c4bf26fbdff42967d660f505a83f75a4df2cc752Douglas Gregor 18451eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Expr *getBase() { 18461eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return cast<Expr>(getRHS()->getType()->isIntegerType() ? getLHS():getRHS()); 1847c4bf26fbdff42967d660f505a83f75a4df2cc752Douglas Gregor } 18481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1849c4bf26fbdff42967d660f505a83f75a4df2cc752Douglas Gregor const Expr *getBase() const { 1850c4bf26fbdff42967d660f505a83f75a4df2cc752Douglas Gregor return cast<Expr>(getRHS()->getType()->isIntegerType() ? getLHS():getRHS()); 18511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 1852096832c5ed5b9106fa177ebc148489760c3bc496John McCall 1853c4bf26fbdff42967d660f505a83f75a4df2cc752Douglas Gregor Expr *getIdx() { 18541eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return cast<Expr>(getRHS()->getType()->isIntegerType() ? getRHS():getLHS()); 18552577743c5650c646fb705df01403707e94f2df04Abramo Bagnara } 18562577743c5650c646fb705df01403707e94f2df04Abramo Bagnara 18572577743c5650c646fb705df01403707e94f2df04Abramo Bagnara const Expr *getIdx() const { 18582577743c5650c646fb705df01403707e94f2df04Abramo Bagnara return cast<Expr>(getRHS()->getType()->isIntegerType() ? getRHS():getLHS()); 18592577743c5650c646fb705df01403707e94f2df04Abramo Bagnara } 18602577743c5650c646fb705df01403707e94f2df04Abramo Bagnara 18615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceRange getSourceRange() const { 18621f0d0133b0e8d1f01f63951ee04927796b34740dDouglas Gregor return SourceRange(getLHS()->getLocStart(), RBracketLoc); 18631f0d0133b0e8d1f01f63951ee04927796b34740dDouglas Gregor } 1864ddca44e86281bb7dcf5fdcaf1563434c524e3861Chris Lattner 1865ddca44e86281bb7dcf5fdcaf1563434c524e3861Chris Lattner SourceLocation getRBracketLoc() const { return RBracketLoc; } 1866026dc96ac6ece60da5e1b98e2a71bd0ff0939fd8Chris Lattner void setRBracketLoc(SourceLocation L) { RBracketLoc = L; } 18671f0d0133b0e8d1f01f63951ee04927796b34740dDouglas Gregor 18685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceLocation getExprLoc() const { return getBase()->getExprLoc(); } 18695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 187072527137c521ad9330ecb81ccd841159719dc8cdEli Friedman static bool classof(const Stmt *T) { 187172527137c521ad9330ecb81ccd841159719dc8cdEli Friedman return T->getStmtClass() == ArraySubscriptExprClass; 18722577743c5650c646fb705df01403707e94f2df04Abramo Bagnara } 18732577743c5650c646fb705df01403707e94f2df04Abramo Bagnara static bool classof(const ArraySubscriptExpr *) { return true; } 18741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 187572527137c521ad9330ecb81ccd841159719dc8cdEli Friedman // Iterators 187672527137c521ad9330ecb81ccd841159719dc8cdEli Friedman child_range children() { 1877c4bf26fbdff42967d660f505a83f75a4df2cc752Douglas Gregor return child_range(&SubExprs[0], &SubExprs[0]+END_EXPR); 1878c4bf26fbdff42967d660f505a83f75a4df2cc752Douglas Gregor } 18795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer}; 18801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 18825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// CallExpr - Represents a function call (C99 6.5.2.2, C++ [expr.call]). 18831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// CallExpr itself represents a normal function call, e.g., "f(x, 2)", 188483f6faf37d9bf58986bedc9bc0ea897a56b4dbadDouglas Gregor/// while its subclasses may represent alternative syntax that (semantically) 18855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// results in a function call. For example, CXXOperatorCallExpr is 18865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// a subclass for overloaded operator calls that use operator syntax, e.g., 18871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// "str1 + str2" to resolve to a function call. 18881237c673c07f9d827129ba02720108816abde562Ted Kremenekclass CallExpr : public Expr { 18891237c673c07f9d827129ba02720108816abde562Ted Kremenek enum { FN=0, PREARGS_START=1 }; 18901237c673c07f9d827129ba02720108816abde562Ted Kremenek Stmt **SubExprs; 18915f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer unsigned NumArgs; 18925f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceLocation RParenLoc; 18931eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1894aff1edd84aaafef15b737acd8ec61abcca6d6bc3Steve Naroffprotected: 1895aff1edd84aaafef15b737acd8ec61abcca6d6bc3Steve Naroff // These versions of the constructor are for derived classes. 18960fc53dfc7a33f68e71ef245389c4e7cd34a62a39Chris Lattner CallExpr(ASTContext& C, StmtClass SC, Expr *fn, unsigned NumPreArgs, 18970fc53dfc7a33f68e71ef245389c4e7cd34a62a39Chris Lattner Expr **args, unsigned numargs, QualType t, ExprValueKind VK, 18980fc53dfc7a33f68e71ef245389c4e7cd34a62a39Chris Lattner SourceLocation rparenloc); 18990fc53dfc7a33f68e71ef245389c4e7cd34a62a39Chris Lattner CallExpr(ASTContext &C, StmtClass SC, unsigned NumPreArgs, EmptyShell Empty); 19001d7d8d66eff7ed0f3e957d330930cc9ab8047addJohn McCall 19011d7d8d66eff7ed0f3e957d330930cc9ab8047addJohn McCall Stmt *getPreArg(unsigned i) { 19021d7d8d66eff7ed0f3e957d330930cc9ab8047addJohn McCall assert(i < getNumPreArgs() && "Prearg access out of range!"); 190342f56b50062cd3b3c6b23fdb9053578ae9145664John McCall return SubExprs[PREARGS_START+i]; 19045549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek } 1905e9b12198c4cc7f5687960100351b4af006c14469Steve Naroff const Stmt *getPreArg(unsigned i) const { 1906aff1edd84aaafef15b737acd8ec61abcca6d6bc3Steve Naroff assert(i < getNumPreArgs() && "Prearg access out of range!"); 19072333f7727f97018d6742e1e0938133bcfad967abEli Friedman return SubExprs[PREARGS_START+i]; 190842f56b50062cd3b3c6b23fdb9053578ae9145664John McCall } 19091d7d8d66eff7ed0f3e957d330930cc9ab8047addJohn McCall void setPreArg(unsigned i, Stmt *PreArg) { 19101d7d8d66eff7ed0f3e957d330930cc9ab8047addJohn McCall assert(i < getNumPreArgs() && "Prearg access out of range!"); 191142f56b50062cd3b3c6b23fdb9053578ae9145664John McCall SubExprs[PREARGS_START+i] = PreArg; 191242f56b50062cd3b3c6b23fdb9053578ae9145664John McCall } 19131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1914ba6d7e7fa5f79959d3eef39adb5620d845ba5198Douglas Gregor unsigned getNumPreArgs() const { return CallExprBits.NumPreArgs; } 1915ba6d7e7fa5f79959d3eef39adb5620d845ba5198Douglas Gregor 1916ba6d7e7fa5f79959d3eef39adb5620d845ba5198Douglas Gregorpublic: 1917ba6d7e7fa5f79959d3eef39adb5620d845ba5198Douglas Gregor CallExpr(ASTContext& C, Expr *fn, Expr **args, unsigned numargs, QualType t, 19185549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek ExprValueKind VK, SourceLocation rparenloc); 19195549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek 1920ba6d7e7fa5f79959d3eef39adb5620d845ba5198Douglas Gregor /// \brief Build an empty call expression. 1921e9b12198c4cc7f5687960100351b4af006c14469Steve Naroff CallExpr(ASTContext &C, StmtClass SC, EmptyShell Empty); 1922e9b12198c4cc7f5687960100351b4af006c14469Steve Naroff 1923ba6d7e7fa5f79959d3eef39adb5620d845ba5198Douglas Gregor const Expr *getCallee() const { return cast<Expr>(SubExprs[FN]); } 1924ba6d7e7fa5f79959d3eef39adb5620d845ba5198Douglas Gregor Expr *getCallee() { return cast<Expr>(SubExprs[FN]); } 19250fc53dfc7a33f68e71ef245389c4e7cd34a62a39Chris Lattner void setCallee(Expr *F) { SubExprs[FN] = F; } 1926ba6d7e7fa5f79959d3eef39adb5620d845ba5198Douglas Gregor 1927ba6d7e7fa5f79959d3eef39adb5620d845ba5198Douglas Gregor Decl *getCalleeDecl(); 192842f56b50062cd3b3c6b23fdb9053578ae9145664John McCall const Decl *getCalleeDecl() const { 192942f56b50062cd3b3c6b23fdb9053578ae9145664John McCall return const_cast<CallExpr*>(this)->getCalleeDecl(); 193042f56b50062cd3b3c6b23fdb9053578ae9145664John McCall } 193173d0d4fac161ed12926e010dcf8b448a8de6a2ecChris Lattner 19320fc53dfc7a33f68e71ef245389c4e7cd34a62a39Chris Lattner /// \brief If the callee is a FunctionDecl, return it. Otherwise return 0. 19330fc53dfc7a33f68e71ef245389c4e7cd34a62a39Chris Lattner FunctionDecl *getDirectCallee(); 19340fc53dfc7a33f68e71ef245389c4e7cd34a62a39Chris Lattner const FunctionDecl *getDirectCallee() const { 19350fc53dfc7a33f68e71ef245389c4e7cd34a62a39Chris Lattner return const_cast<CallExpr*>(this)->getDirectCallee(); 193673d0d4fac161ed12926e010dcf8b448a8de6a2ecChris Lattner } 19370fc53dfc7a33f68e71ef245389c4e7cd34a62a39Chris Lattner 193873d0d4fac161ed12926e010dcf8b448a8de6a2ecChris Lattner /// getNumArgs - Return the number of actual arguments to this call. 1939aff1edd84aaafef15b737acd8ec61abcca6d6bc3Steve Naroff /// 19401eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump unsigned getNumArgs() const { return NumArgs; } 19411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1942aff1edd84aaafef15b737acd8ec61abcca6d6bc3Steve Naroff /// \brief Retrieve the call arguments. 1943aff1edd84aaafef15b737acd8ec61abcca6d6bc3Steve Naroff Expr **getArgs() { 19441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return reinterpret_cast<Expr **>(SubExprs+getNumPreArgs()+PREARGS_START); 19451237c673c07f9d827129ba02720108816abde562Ted Kremenek } 19461237c673c07f9d827129ba02720108816abde562Ted Kremenek 19471237c673c07f9d827129ba02720108816abde562Ted Kremenek /// getArg - Return the specified argument. 1948aff1edd84aaafef15b737acd8ec61abcca6d6bc3Steve Naroff Expr *getArg(unsigned Arg) { 1949aff1edd84aaafef15b737acd8ec61abcca6d6bc3Steve Naroff assert(Arg < NumArgs && "Arg access out of range!"); 195049badde06e066d058d6c7fcf4e628a72999b65a9Douglas Gregor return cast<Expr>(SubExprs[Arg+getNumPreArgs()+PREARGS_START]); 195149badde06e066d058d6c7fcf4e628a72999b65a9Douglas Gregor } 195249badde06e066d058d6c7fcf4e628a72999b65a9Douglas Gregor const Expr *getArg(unsigned Arg) const { 195349badde06e066d058d6c7fcf4e628a72999b65a9Douglas Gregor assert(Arg < NumArgs && "Arg access out of range!"); 19540835a3cdeefe714b4959d31127ea155e56393125Argyrios Kyrtzidis return cast<Expr>(SubExprs[Arg+getNumPreArgs()+PREARGS_START]); 1955cdef2b75aa60cde1ca00e0aa3f89139ac89c6ae4Anders Carlsson } 19565baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall 19571eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// setArg - Set the specified argument. 1958cdef2b75aa60cde1ca00e0aa3f89139ac89c6ae4Anders Carlsson void setArg(unsigned Arg, Expr *ArgExpr) { 1959f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall assert(Arg < NumArgs && "Arg access out of range!"); 1960f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall SubExprs[Arg+getNumPreArgs()+PREARGS_START] = ArgExpr; 19610835a3cdeefe714b4959d31127ea155e56393125Argyrios Kyrtzidis } 1962409c99edb8b623403fade6f3a9e9c86acda74455Anders Carlsson 19637ab9d574d27ecee1f130e5755aa403e5ab529b6bAnders Carlsson /// setNumArgs - This changes the number of arguments present in this call. 1964409c99edb8b623403fade6f3a9e9c86acda74455Anders Carlsson /// Any orphaned expressions are deleted by this, and any new operands are set 1965409c99edb8b623403fade6f3a9e9c86acda74455Anders Carlsson /// to null. 19665cf86ba6b5a724bf91cb52feade1158f1fbeb605Anders Carlsson void setNumArgs(ASTContext& C, unsigned NumArgs); 1967cee22421929c91b481f4d1bb85cd48c0f6b7510bAnders Carlsson 1968cee22421929c91b481f4d1bb85cd48c0f6b7510bAnders Carlsson typedef ExprIterator arg_iterator; 1969409c99edb8b623403fade6f3a9e9c86acda74455Anders Carlsson typedef ConstExprIterator const_arg_iterator; 1970409c99edb8b623403fade6f3a9e9c86acda74455Anders Carlsson 1971f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall arg_iterator arg_begin() { return SubExprs+PREARGS_START+getNumPreArgs(); } 1972f9d68e1dd015972318b2448f75115ff4fc3d5008Anders Carlsson arg_iterator arg_end() { 1973409c99edb8b623403fade6f3a9e9c86acda74455Anders Carlsson return SubExprs+PREARGS_START+getNumPreArgs()+getNumArgs(); 1974409c99edb8b623403fade6f3a9e9c86acda74455Anders Carlsson } 1975409c99edb8b623403fade6f3a9e9c86acda74455Anders Carlsson const_arg_iterator arg_begin() const { 1976409c99edb8b623403fade6f3a9e9c86acda74455Anders Carlsson return SubExprs+PREARGS_START+getNumPreArgs(); 1977e39a3894513349908cdb3beba2614e53cb288e6cDouglas Gregor } 1978409c99edb8b623403fade6f3a9e9c86acda74455Anders Carlsson const_arg_iterator arg_end() const { 1979409c99edb8b623403fade6f3a9e9c86acda74455Anders Carlsson return SubExprs+PREARGS_START+getNumPreArgs()+getNumArgs(); 1980409c99edb8b623403fade6f3a9e9c86acda74455Anders Carlsson } 1981409c99edb8b623403fade6f3a9e9c86acda74455Anders Carlsson 1982409c99edb8b623403fade6f3a9e9c86acda74455Anders Carlsson /// getNumCommas - Return the number of commas that must have been present in 1983409c99edb8b623403fade6f3a9e9c86acda74455Anders Carlsson /// this function call. 1984409c99edb8b623403fade6f3a9e9c86acda74455Anders Carlsson unsigned getNumCommas() const { return NumArgs ? NumArgs - 1 : 0; } 1985409c99edb8b623403fade6f3a9e9c86acda74455Anders Carlsson 1986409c99edb8b623403fade6f3a9e9c86acda74455Anders Carlsson /// isBuiltinCall - If this is a call to a builtin, return the builtin ID. If 1987409c99edb8b623403fade6f3a9e9c86acda74455Anders Carlsson /// not, return 0. 1988409c99edb8b623403fade6f3a9e9c86acda74455Anders Carlsson unsigned isBuiltinCall(const ASTContext &Context) const; 1989409c99edb8b623403fade6f3a9e9c86acda74455Anders Carlsson 1990409c99edb8b623403fade6f3a9e9c86acda74455Anders Carlsson /// getCallReturnType - Get the return type of the call expr. This is not 1991409c99edb8b623403fade6f3a9e9c86acda74455Anders Carlsson /// always the type of the expr itself, if the return type is a reference 1992409c99edb8b623403fade6f3a9e9c86acda74455Anders Carlsson /// type. 1993409c99edb8b623403fade6f3a9e9c86acda74455Anders Carlsson QualType getCallReturnType() const; 1994409c99edb8b623403fade6f3a9e9c86acda74455Anders Carlsson 1995409c99edb8b623403fade6f3a9e9c86acda74455Anders Carlsson SourceLocation getRParenLoc() const { return RParenLoc; } 1996409c99edb8b623403fade6f3a9e9c86acda74455Anders Carlsson void setRParenLoc(SourceLocation L) { RParenLoc = L; } 1997569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor 1998f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall SourceRange getSourceRange() const; 1999409c99edb8b623403fade6f3a9e9c86acda74455Anders Carlsson 2000409c99edb8b623403fade6f3a9e9c86acda74455Anders Carlsson static bool classof(const Stmt *T) { 2001409c99edb8b623403fade6f3a9e9c86acda74455Anders Carlsson return T->getStmtClass() >= firstCallExprConstant && 2002409c99edb8b623403fade6f3a9e9c86acda74455Anders Carlsson T->getStmtClass() <= lastCallExprConstant; 2003409c99edb8b623403fade6f3a9e9c86acda74455Anders Carlsson } 2004f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall static bool classof(const CallExpr *) { return true; } 2005f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall 2006f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall // Iterators 2007f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall child_range children() { 2008f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall return child_range(&SubExprs[0], 20090835a3cdeefe714b4959d31127ea155e56393125Argyrios Kyrtzidis &SubExprs[0]+NumArgs+getNumPreArgs()+PREARGS_START); 2010409c99edb8b623403fade6f3a9e9c86acda74455Anders Carlsson } 2011f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall}; 2012898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor 2013898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor/// MemberExpr - [C99 6.5.2.3] Structure and Union Members. X->F and X.F. 2014898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor/// 2015898574e7496ba8fd76290079d3a9d06954992734Douglas Gregorclass MemberExpr : public Expr { 2016898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor /// Extra data stored in some member expressions. 2017898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor struct MemberNameQualifier { 20181eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// \brief The nested-name-specifier that qualifies the name, including 2019f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall /// source-location information. 2020f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall NestedNameSpecifierLoc QualifierLoc; 2021f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall 20221eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// \brief The DeclAccessPair through which the MemberDecl was found due to 2023087fd536809ebe754d91c641a98917e02dd7452dDouglas Gregor /// name qualifiers. 2024f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall DeclAccessPair FoundDecl; 2025f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall }; 20261eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 20270835a3cdeefe714b4959d31127ea155e56393125Argyrios Kyrtzidis /// Base - the expression for the base pointer or structure references. In 2028f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall /// X.F, this is "X". 2029cdef2b75aa60cde1ca00e0aa3f89139ac89c6ae4Anders Carlsson Stmt *Base; 2030f8ec55a104e55961f8666f773dce99bbc628298fAnders Carlsson 2031f8ec55a104e55961f8666f773dce99bbc628298fAnders Carlsson /// MemberDecl - This is the decl being referenced by the field/member name. 20320835a3cdeefe714b4959d31127ea155e56393125Argyrios Kyrtzidis /// In X.F, this is the decl referenced by F. 20330835a3cdeefe714b4959d31127ea155e56393125Argyrios Kyrtzidis ValueDecl *MemberDecl; 2034087fd536809ebe754d91c641a98917e02dd7452dDouglas Gregor 2035087fd536809ebe754d91c641a98917e02dd7452dDouglas Gregor /// MemberLoc - This is the location of the member name. 20366eef519fc8a97bb7ca6066f23d35e10f06b2c1b5Douglas Gregor SourceLocation MemberLoc; 20376eef519fc8a97bb7ca6066f23d35e10f06b2c1b5Douglas Gregor 20386eef519fc8a97bb7ca6066f23d35e10f06b2c1b5Douglas Gregor /// MemberDNLoc - Provides source/type location info for the 20396eef519fc8a97bb7ca6066f23d35e10f06b2c1b5Douglas Gregor /// declaration name embedded in MemberDecl. 20406eef519fc8a97bb7ca6066f23d35e10f06b2c1b5Douglas Gregor DeclarationNameLoc MemberDNLoc; 20416eef519fc8a97bb7ca6066f23d35e10f06b2c1b5Douglas Gregor 20426eef519fc8a97bb7ca6066f23d35e10f06b2c1b5Douglas Gregor /// IsArrow - True if this is "X->F", false if this is "X.F". 204341b2dcd465f1e438502c420effc9d0c747f9db8fAnders Carlsson bool IsArrow : 1; 2044f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall 2045f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall /// \brief True if this member expression used a nested-name-specifier to 2046f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall /// refer to the member, e.g., "x->Base::f", or found its member via a using 2047f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall /// declaration. When true, a MemberNameQualifier 2048f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall /// structure is allocated immediately after the MemberExpr. 2049f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall bool HasQualifierOrFoundDecl : 1; 2050f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall 2051f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall /// \brief True if this member expression specified a template argument list 2052f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall /// explicitly, e.g., x->f<int>. When true, an ExplicitTemplateArgumentList 2053f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall /// structure (and its TemplateArguments) are allocated immediately after 205441b2dcd465f1e438502c420effc9d0c747f9db8fAnders Carlsson /// the MemberExpr or, if the member expression also has a qualifier, after 20551eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// the MemberNameQualifier structure. 20564bfe1968410ea8ffe3b4f629addd7c4bcf484765Sean Hunt bool HasExplicitTemplateArgumentList : 1; 20574bfe1968410ea8ffe3b4f629addd7c4bcf484765Sean Hunt 20580835a3cdeefe714b4959d31127ea155e56393125Argyrios Kyrtzidis /// \brief Retrieve the qualifier that preceded the member name, if any. 20590835a3cdeefe714b4959d31127ea155e56393125Argyrios Kyrtzidis MemberNameQualifier *getMemberQualifier() { 20601eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump assert(HasQualifierOrFoundDecl); 20610835a3cdeefe714b4959d31127ea155e56393125Argyrios Kyrtzidis return reinterpret_cast<MemberNameQualifier *> (this + 1); 20620835a3cdeefe714b4959d31127ea155e56393125Argyrios Kyrtzidis } 20630835a3cdeefe714b4959d31127ea155e56393125Argyrios Kyrtzidis 20640835a3cdeefe714b4959d31127ea155e56393125Argyrios Kyrtzidis /// \brief Retrieve the qualifier that preceded the member name, if any. 20650835a3cdeefe714b4959d31127ea155e56393125Argyrios Kyrtzidis const MemberNameQualifier *getMemberQualifier() const { 206649badde06e066d058d6c7fcf4e628a72999b65a9Douglas Gregor return const_cast<MemberExpr *>(this)->getMemberQualifier(); 206749badde06e066d058d6c7fcf4e628a72999b65a9Douglas Gregor } 206849badde06e066d058d6c7fcf4e628a72999b65a9Douglas Gregor 206949badde06e066d058d6c7fcf4e628a72999b65a9Douglas Gregorpublic: 207049b4526992a8c8a6a290aa3efa9828154a24af8dSteve Naroff MemberExpr(Expr *base, bool isarrow, ValueDecl *memberdecl, 2071bf3af056289893f58d37b05a2c80970708781d61Douglas Gregor const DeclarationNameInfo &NameInfo, QualType ty, 2072bf3af056289893f58d37b05a2c80970708781d61Douglas Gregor ExprValueKind VK, ExprObjectKind OK) 2073906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl : Expr(MemberExprClass, ty, VK, OK, 2074bf3af056289893f58d37b05a2c80970708781d61Douglas Gregor base->isTypeDependent(), 2075bf3af056289893f58d37b05a2c80970708781d61Douglas Gregor base->isValueDependent(), 2076bf3af056289893f58d37b05a2c80970708781d61Douglas Gregor base->isInstantiationDependent(), 2077bf3af056289893f58d37b05a2c80970708781d61Douglas Gregor base->containsUnexpandedParameterPack()), 2078906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl Base(base), MemberDecl(memberdecl), MemberLoc(NameInfo.getLoc()), 20791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump MemberDNLoc(NameInfo.getInfo()), IsArrow(isarrow), 2080906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl HasQualifierOrFoundDecl(false), HasExplicitTemplateArgumentList(false) { 2081906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl assert(memberdecl->getDeclName() == NameInfo.getName()); 2082906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl } 2083906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl 2084bf3af056289893f58d37b05a2c80970708781d61Douglas Gregor // NOTE: this constructor should be used only when it is known that 2085bf3af056289893f58d37b05a2c80970708781d61Douglas Gregor // the member name can not provide additional syntactic info 20860835a3cdeefe714b4959d31127ea155e56393125Argyrios Kyrtzidis // (i.e., source locations for C++ operator names or type source info 2087906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl // for constructors, destructors and conversion oeprators). 2088f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall MemberExpr(Expr *base, bool isarrow, ValueDecl *memberdecl, 20895baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall SourceLocation l, QualType ty, 20905baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall ExprValueKind VK, ExprObjectKind OK) 20915baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall : Expr(MemberExprClass, ty, VK, OK, 20925baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall base->isTypeDependent(), base->isValueDependent(), 209390045e8ebabf50d6f1b3a67081a621b20b5e5341Steve Naroff base->isInstantiationDependent(), 2094087fd536809ebe754d91c641a98917e02dd7452dDouglas Gregor base->containsUnexpandedParameterPack()), 2095f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall Base(base), MemberDecl(memberdecl), MemberLoc(l), MemberDNLoc(), 2096f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall IsArrow(isarrow), 2097f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall HasQualifierOrFoundDecl(false), HasExplicitTemplateArgumentList(false) {} 2098f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall 2099f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall static MemberExpr *Create(ASTContext &C, Expr *base, bool isarrow, 2100f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall NestedNameSpecifierLoc QualifierLoc, 21015baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall ValueDecl *memberdecl, DeclAccessPair founddecl, 21025baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall DeclarationNameInfo MemberNameInfo, 21035baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall const TemplateArgumentListInfo *targs, 21045baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall QualType ty, ExprValueKind VK, ExprObjectKind OK); 2105f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall 2106f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall void setBase(Expr *E) { Base = E; } 2107f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall Expr *getBase() const { return cast<Expr>(Base); } 2108f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall 21095baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall /// \brief Retrieve the member declaration to which this expression refers. 2110f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall /// 2111f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall /// The returned declaration will either be a FieldDecl or (in C++) 2112087fd536809ebe754d91c641a98917e02dd7452dDouglas Gregor /// a CXXMethodDecl. 21130835a3cdeefe714b4959d31127ea155e56393125Argyrios Kyrtzidis ValueDecl *getMemberDecl() const { return MemberDecl; } 21140835a3cdeefe714b4959d31127ea155e56393125Argyrios Kyrtzidis void setMemberDecl(ValueDecl *D) { MemberDecl = D; } 21150835a3cdeefe714b4959d31127ea155e56393125Argyrios Kyrtzidis 211690045e8ebabf50d6f1b3a67081a621b20b5e5341Steve Naroff /// \brief Retrieves the declaration found by lookup. 21175baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall DeclAccessPair getFoundDecl() const { 21185baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall if (!HasQualifierOrFoundDecl) 21195baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall return DeclAccessPair::make(getMemberDecl(), 21205baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall getMemberDecl()->getAccess()); 2121eb8f3063257a392f15aea48d42fb73ec51afc548Douglas Gregor return getMemberQualifier()->FoundDecl; 21225baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall } 21235baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall 2124eb8f3063257a392f15aea48d42fb73ec51afc548Douglas Gregor /// \brief Determines whether this member expression actually had 21251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// a C++ nested-name-specifier prior to the name of the member, e.g., 21261eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// x->Base::foo. 212749b4526992a8c8a6a290aa3efa9828154a24af8dSteve Naroff bool hasQualifier() const { return getQualifier() != 0; } 212849b4526992a8c8a6a290aa3efa9828154a24af8dSteve Naroff 212949b4526992a8c8a6a290aa3efa9828154a24af8dSteve Naroff /// \brief If the member name was qualified, retrieves the 213049b4526992a8c8a6a290aa3efa9828154a24af8dSteve Naroff /// nested-name-specifier that precedes the member name. Otherwise, returns 213149badde06e066d058d6c7fcf4e628a72999b65a9Douglas Gregor /// NULL. 21321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump NestedNameSpecifier *getQualifier() const { 213349badde06e066d058d6c7fcf4e628a72999b65a9Douglas Gregor if (!HasQualifierOrFoundDecl) 213449badde06e066d058d6c7fcf4e628a72999b65a9Douglas Gregor return 0; 213549badde06e066d058d6c7fcf4e628a72999b65a9Douglas Gregor 213649badde06e066d058d6c7fcf4e628a72999b65a9Douglas Gregor return getMemberQualifier()->QualifierLoc.getNestedNameSpecifier(); 213749badde06e066d058d6c7fcf4e628a72999b65a9Douglas Gregor } 213849badde06e066d058d6c7fcf4e628a72999b65a9Douglas Gregor 21395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// \brief If the member name was qualified, retrieves the 214049badde06e066d058d6c7fcf4e628a72999b65a9Douglas Gregor /// nested-name-specifier that precedes the member name, with source-location 214149badde06e066d058d6c7fcf4e628a72999b65a9Douglas Gregor /// information. 214249badde06e066d058d6c7fcf4e628a72999b65a9Douglas Gregor NestedNameSpecifierLoc getQualifierLoc() const { 214349badde06e066d058d6c7fcf4e628a72999b65a9Douglas Gregor if (!hasQualifier()) 214449badde06e066d058d6c7fcf4e628a72999b65a9Douglas Gregor return NestedNameSpecifierLoc(); 2145906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl 2146906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl return getMemberQualifier()->QualifierLoc; 21470835a3cdeefe714b4959d31127ea155e56393125Argyrios Kyrtzidis } 21489d125033a9853f3b572a4c9e2f9e2d4e5e346973John McCall 21499d125033a9853f3b572a4c9e2f9e2d4e5e346973John McCall /// \brief Determines whether this member expression actually had a C++ 21509d125033a9853f3b572a4c9e2f9e2d4e5e346973John McCall /// template argument list explicitly specified, e.g., x.f<int>. 215149badde06e066d058d6c7fcf4e628a72999b65a9Douglas Gregor bool hasExplicitTemplateArgs() const { 215249badde06e066d058d6c7fcf4e628a72999b65a9Douglas Gregor return HasExplicitTemplateArgumentList; 2153c0a2fd8f092722c8f78b566ac4506a21437040e9Anders Carlsson } 2154f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall 2155f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall /// \brief Copies the template arguments (if present) into the given 215649badde06e066d058d6c7fcf4e628a72999b65a9Douglas Gregor /// structure. 2157db600c330a37b1c3ab4533310729910ee188f900Douglas Gregor void copyTemplateArgumentsInto(TemplateArgumentListInfo &List) const { 2158f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall if (hasExplicitTemplateArgs()) 2159f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall getExplicitTemplateArgs().copyInto(List); 2160db600c330a37b1c3ab4533310729910ee188f900Douglas Gregor } 216149badde06e066d058d6c7fcf4e628a72999b65a9Douglas Gregor 21629d125033a9853f3b572a4c9e2f9e2d4e5e346973John McCall /// \brief Retrieve the explicit template argument list that 21639d125033a9853f3b572a4c9e2f9e2d4e5e346973John McCall /// follow the member template name. This must only be called on an 21649d125033a9853f3b572a4c9e2f9e2d4e5e346973John McCall /// expression with explicit template arguments. 21659d125033a9853f3b572a4c9e2f9e2d4e5e346973John McCall ExplicitTemplateArgumentList &getExplicitTemplateArgs() { 21669d125033a9853f3b572a4c9e2f9e2d4e5e346973John McCall assert(HasExplicitTemplateArgumentList); 216749badde06e066d058d6c7fcf4e628a72999b65a9Douglas Gregor if (!HasQualifierOrFoundDecl) 216849badde06e066d058d6c7fcf4e628a72999b65a9Douglas Gregor return *reinterpret_cast<ExplicitTemplateArgumentList *>(this + 1); 21699d125033a9853f3b572a4c9e2f9e2d4e5e346973John McCall 217049badde06e066d058d6c7fcf4e628a72999b65a9Douglas Gregor return *reinterpret_cast<ExplicitTemplateArgumentList *>( 21711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump getMemberQualifier() + 1); 21724bfe1968410ea8ffe3b4f629addd7c4bcf484765Sean Hunt } 21734bfe1968410ea8ffe3b4f629addd7c4bcf484765Sean Hunt 217449badde06e066d058d6c7fcf4e628a72999b65a9Douglas Gregor /// \brief Retrieve the explicit template argument list that 217549badde06e066d058d6c7fcf4e628a72999b65a9Douglas Gregor /// followed the member template name. This must only be called on 217649badde06e066d058d6c7fcf4e628a72999b65a9Douglas Gregor /// an expression with explicit template arguments. 217749badde06e066d058d6c7fcf4e628a72999b65a9Douglas Gregor const ExplicitTemplateArgumentList &getExplicitTemplateArgs() const { 21786eec8e883de118b431e3ead5b1e604a6ac68ff6bDouglas Gregor return const_cast<MemberExpr *>(this)->getExplicitTemplateArgs(); 217949badde06e066d058d6c7fcf4e628a72999b65a9Douglas Gregor } 218049badde06e066d058d6c7fcf4e628a72999b65a9Douglas Gregor 21816eec8e883de118b431e3ead5b1e604a6ac68ff6bDouglas Gregor /// \brief Retrieves the optional explicit template arguments. 2182b2f9e516327310d95840d442416084508f80c183Steve Naroff /// This points to the same data as getExplicitTemplateArgs(), but 2183b2f9e516327310d95840d442416084508f80c183Steve Naroff /// returns null if there are no explicit template arguments. 2184f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall const ExplicitTemplateArgumentList *getOptionalExplicitTemplateArgs() const { 21859d125033a9853f3b572a4c9e2f9e2d4e5e346973John McCall if (!hasExplicitTemplateArgs()) return 0; 2186f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall return &getExplicitTemplateArgs(); 218741b2dcd465f1e438502c420effc9d0c747f9db8fAnders Carlsson } 2188f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall 218941b2dcd465f1e438502c420effc9d0c747f9db8fAnders Carlsson /// \brief Retrieve the location of the left angle bracket following the 219049b4526992a8c8a6a290aa3efa9828154a24af8dSteve Naroff /// member name ('<'), if any. 2191db600c330a37b1c3ab4533310729910ee188f900Douglas Gregor SourceLocation getLAngleLoc() const { 2192f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall if (!HasExplicitTemplateArgumentList) 2193f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall return SourceLocation(); 2194f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall 2195f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall return getExplicitTemplateArgs().LAngleLoc; 2196f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall } 2197f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall 2198f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall /// \brief Retrieve the template arguments provided as part of this 2199f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall /// template-id. 2200f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall const TemplateArgumentLoc *getTemplateArgs() const { 2201f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall if (!HasExplicitTemplateArgumentList) 2202db600c330a37b1c3ab4533310729910ee188f900Douglas Gregor return 0; 2203b2f9e516327310d95840d442416084508f80c183Steve Naroff 2204db600c330a37b1c3ab4533310729910ee188f900Douglas Gregor return getExplicitTemplateArgs().getTemplateArgs(); 2205db600c330a37b1c3ab4533310729910ee188f900Douglas Gregor } 2206b2f9e516327310d95840d442416084508f80c183Steve Naroff 2207db600c330a37b1c3ab4533310729910ee188f900Douglas Gregor /// \brief Retrieve the number of template arguments provided as part of this 2208db600c330a37b1c3ab4533310729910ee188f900Douglas Gregor /// template-id. 22095f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer unsigned getNumTemplateArgs() const { 2210b2f9e516327310d95840d442416084508f80c183Steve Naroff if (!HasExplicitTemplateArgumentList) 22115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return 0; 22121eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 22131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return getExplicitTemplateArgs().NumTemplateArgs; 22145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 22156eec8e883de118b431e3ead5b1e604a6ac68ff6bDouglas Gregor 22165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// \brief Retrieve the location of the right angle bracket following the 22175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// template arguments ('>'). 22183fd95ce225393fe4a3623e429766a8c3f487ff9dDouglas Gregor SourceLocation getRAngleLoc() const { 22193fd95ce225393fe4a3623e429766a8c3f487ff9dDouglas Gregor if (!HasExplicitTemplateArgumentList) 22203fd95ce225393fe4a3623e429766a8c3f487ff9dDouglas Gregor return SourceLocation(); 22213fd95ce225393fe4a3623e429766a8c3f487ff9dDouglas Gregor 22223fd95ce225393fe4a3623e429766a8c3f487ff9dDouglas Gregor return getExplicitTemplateArgs().RAngleLoc; 22233fd95ce225393fe4a3623e429766a8c3f487ff9dDouglas Gregor } 22243fd95ce225393fe4a3623e429766a8c3f487ff9dDouglas Gregor 22253fd95ce225393fe4a3623e429766a8c3f487ff9dDouglas Gregor /// \brief Retrieve the member declaration name info. 22263fd95ce225393fe4a3623e429766a8c3f487ff9dDouglas Gregor DeclarationNameInfo getMemberNameInfo() const { 22273fd95ce225393fe4a3623e429766a8c3f487ff9dDouglas Gregor return DeclarationNameInfo(MemberDecl->getDeclName(), 22283fd95ce225393fe4a3623e429766a8c3f487ff9dDouglas Gregor MemberLoc, MemberDNLoc); 22293fd95ce225393fe4a3623e429766a8c3f487ff9dDouglas Gregor } 22303fd95ce225393fe4a3623e429766a8c3f487ff9dDouglas Gregor 22313fd95ce225393fe4a3623e429766a8c3f487ff9dDouglas Gregor bool isArrow() const { return IsArrow; } 22323fd95ce225393fe4a3623e429766a8c3f487ff9dDouglas Gregor void setArrow(bool A) { IsArrow = A; } 22333fd95ce225393fe4a3623e429766a8c3f487ff9dDouglas Gregor 22343fd95ce225393fe4a3623e429766a8c3f487ff9dDouglas Gregor /// getMemberLoc - Return the location of the "member", in X->F, it is the 22353fd95ce225393fe4a3623e429766a8c3f487ff9dDouglas Gregor /// location of 'F'. 22365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceLocation getMemberLoc() const { return MemberLoc; } 22375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void setMemberLoc(SourceLocation L) { MemberLoc = L; } 22385baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall 22395baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall SourceRange getSourceRange() const; 224017d1b2ac9f8371a0a2e79d4f8e0008658164f080Chris Lattner 22410799c53fc2bb7acf937c8a8e165033dba1a5aba3John McCall SourceLocation getExprLoc() const { return MemberLoc; } 22420799c53fc2bb7acf937c8a8e165033dba1a5aba3John McCall 22430799c53fc2bb7acf937c8a8e165033dba1a5aba3John McCall /// \brief Determine whether the base of this explicit is implicit. 224417d1b2ac9f8371a0a2e79d4f8e0008658164f080Chris Lattner bool isImplicitAccess() const { 22455549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek return getBase() && getBase()->isImplicitCXXThis(); 22461eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 22471eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 224817d1b2ac9f8371a0a2e79d4f8e0008658164f080Chris Lattner static bool classof(const Stmt *T) { 224917d1b2ac9f8371a0a2e79d4f8e0008658164f080Chris Lattner return T->getStmtClass() == MemberExprClass; 2250898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor } 2251898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor static bool classof(const MemberExpr *) { return true; } 22521eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2253898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor // Iterators 22541237c673c07f9d827129ba02720108816abde562Ted Kremenek child_range children() { return child_range(&Base, &Base+1); } 22551237c673c07f9d827129ba02720108816abde562Ted Kremenek 22561eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump friend class ASTReader; 22575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer friend class ASTStmtWriter; 22585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer}; 22595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2260db600c330a37b1c3ab4533310729910ee188f900Douglas Gregor/// CompoundLiteralExpr - [C99 6.5.2.5] 22611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// 22622de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCallclass CompoundLiteralExpr : public Expr { 2263db600c330a37b1c3ab4533310729910ee188f900Douglas Gregor /// LParenLoc - If non-null, this is the location of the left paren in a 226417d1b2ac9f8371a0a2e79d4f8e0008658164f080Chris Lattner /// compound literal like "(int){4}". This can be null if this is a 2265db600c330a37b1c3ab4533310729910ee188f900Douglas Gregor /// synthesized compound expression. 2266db600c330a37b1c3ab4533310729910ee188f900Douglas Gregor SourceLocation LParenLoc; 22670799c53fc2bb7acf937c8a8e165033dba1a5aba3John McCall 2268db600c330a37b1c3ab4533310729910ee188f900Douglas Gregor /// The type as written. This can be an incomplete array type, in 2269db600c330a37b1c3ab4533310729910ee188f900Douglas Gregor /// which case the actual expression type will be different. 22705549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek TypeSourceInfo *TInfo; 2271db600c330a37b1c3ab4533310729910ee188f900Douglas Gregor Stmt *Init; 22725549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek bool FileScope; 2273db600c330a37b1c3ab4533310729910ee188f900Douglas Gregorpublic: 2274db600c330a37b1c3ab4533310729910ee188f900Douglas Gregor CompoundLiteralExpr(SourceLocation lparenloc, TypeSourceInfo *tinfo, 22755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer QualType T, ExprValueKind VK, Expr *init, bool fileScope) 22765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer : Expr(CompoundLiteralExprClass, T, VK, OK_Ordinary, 22775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer tinfo->getType()->isDependentType(), 22781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump init->isValueDependent(), 22795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer (init->isInstantiationDependent() || 22805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer tinfo->getType()->isInstantiationDependentType()), 22815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer init->containsUnexpandedParameterPack()), 22825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer LParenLoc(lparenloc), TInfo(tinfo), Init(init), FileScope(fileScope) {} 22830799c53fc2bb7acf937c8a8e165033dba1a5aba3John McCall 2284a84c02d0f4d63975a1c52b9bb8308d88e9d79352Ted Kremenek /// \brief Construct an empty compound literal. 2285063daf6e196c51f162e0485478355d8e280eef5cDouglas Gregor explicit CompoundLiteralExpr(EmptyShell Empty) 2286063daf6e196c51f162e0485478355d8e280eef5cDouglas Gregor : Expr(CompoundLiteralExprClass, Empty) { } 2287063daf6e196c51f162e0485478355d8e280eef5cDouglas Gregor 2288063daf6e196c51f162e0485478355d8e280eef5cDouglas Gregor const Expr *getInitializer() const { return cast<Expr>(Init); } 2289063daf6e196c51f162e0485478355d8e280eef5cDouglas Gregor Expr *getInitializer() { return cast<Expr>(Init); } 2290063daf6e196c51f162e0485478355d8e280eef5cDouglas Gregor void setInitializer(Expr *E) { Init = E; } 2291063daf6e196c51f162e0485478355d8e280eef5cDouglas Gregor 2292063daf6e196c51f162e0485478355d8e280eef5cDouglas Gregor bool isFileScope() const { return FileScope; } 22935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void setFileScope(bool FS) { FileScope = FS; } 22942de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall 22952de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall SourceLocation getLParenLoc() const { return LParenLoc; } 22960799c53fc2bb7acf937c8a8e165033dba1a5aba3John McCall void setLParenLoc(SourceLocation L) { LParenLoc = L; } 22972de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall 22980799c53fc2bb7acf937c8a8e165033dba1a5aba3John McCall TypeSourceInfo *getTypeSourceInfo() const { return TInfo; } 2299aee3c9375f97a49edef2a36f15df6abd9748e2a1Sebastian Redl void setTypeSourceInfo(TypeSourceInfo* tinfo) { TInfo = tinfo; } 23002de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall 23010799c53fc2bb7acf937c8a8e165033dba1a5aba3John McCall SourceRange getSourceRange() const { 2302f2da7a06f6b98c3886d9b871ab839f5085b1c238Ted Kremenek // FIXME: Init should never be null. 23032de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall if (!Init) 23040799c53fc2bb7acf937c8a8e165033dba1a5aba3John McCall return SourceRange(); 2305f2da7a06f6b98c3886d9b871ab839f5085b1c238Ted Kremenek if (LParenLoc.isInvalid()) 23062de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall return Init->getSourceRange(); 23070799c53fc2bb7acf937c8a8e165033dba1a5aba3John McCall return SourceRange(LParenLoc, Init->getLocEnd()); 23081eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 23092de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall 23100799c53fc2bb7acf937c8a8e165033dba1a5aba3John McCall static bool classof(const Stmt *T) { 2311aee3c9375f97a49edef2a36f15df6abd9748e2a1Sebastian Redl return T->getStmtClass() == CompoundLiteralExprClass; 23122de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall } 23130799c53fc2bb7acf937c8a8e165033dba1a5aba3John McCall static bool classof(const CompoundLiteralExpr *) { return true; } 2314f2da7a06f6b98c3886d9b871ab839f5085b1c238Ted Kremenek 23152de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall // Iterators 23162de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall child_range children() { return child_range(&Init, &Init+1); } 23172de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall}; 23182de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall 23192de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall/// CastExpr - Base class for type casts, including both implicit 23202de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall/// casts (ImplicitCastExpr) and explicit casts that have some 23212de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall/// representation in the source code (ExplicitCastExpr's derived 23221eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// classes). 23231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumpclass CastExpr : public Expr { 23244bfe1968410ea8ffe3b4f629addd7c4bcf484765Sean Huntpublic: 23254bfe1968410ea8ffe3b4f629addd7c4bcf484765Sean Hunt typedef clang::CastKind CastKind; 23265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 23275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerprivate: 23281237c673c07f9d827129ba02720108816abde562Ted Kremenek Stmt *Op; 23291237c673c07f9d827129ba02720108816abde562Ted Kremenek 23301237c673c07f9d827129ba02720108816abde562Ted Kremenek void CheckCastConsistency() const { 23311237c673c07f9d827129ba02720108816abde562Ted Kremenek#ifndef NDEBUG 23321237c673c07f9d827129ba02720108816abde562Ted Kremenek switch (getCastKind()) { 23335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case CK_DerivedToBase: 233417d1b2ac9f8371a0a2e79d4f8e0008658164f080Chris Lattner case CK_UncheckedDerivedToBase: 23352333f7727f97018d6742e1e0938133bcfad967abEli Friedman case CK_DerivedToBaseMemberPointer: 23362333f7727f97018d6742e1e0938133bcfad967abEli Friedman case CK_BaseToDerived: 23372333f7727f97018d6742e1e0938133bcfad967abEli Friedman case CK_BaseToDerivedMemberPointer: 23382333f7727f97018d6742e1e0938133bcfad967abEli Friedman assert(!path_empty() && "Cast kind should have a base path!"); 23392333f7727f97018d6742e1e0938133bcfad967abEli Friedman break; 23401237c673c07f9d827129ba02720108816abde562Ted Kremenek 23411237c673c07f9d827129ba02720108816abde562Ted Kremenek // These should not have an inheritance path. 23425f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case CK_BitCast: 2343ad90e96fb7eed26d5217dd06ba50ecbbbebb59e6Douglas Gregor case CK_Dynamic: 23441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump case CK_ToUnion: 23452de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall case CK_ArrayToPointerDecay: 23465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case CK_FunctionToPointerDecay: 23475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case CK_NullToMemberPointer: 23485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case CK_NullToPointer: 23495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case CK_ConstructorConversion: 23505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case CK_IntegralToPointer: 23515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case CK_PointerToIntegral: 23525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case CK_ToVoid: 23535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case CK_VectorSplat: 23545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case CK_IntegralCast: 2355ab3a852ae713189444dcbf75e70accf1e8c2b7f2Eli Friedman case CK_IntegralToFloating: 2356ab3a852ae713189444dcbf75e70accf1e8c2b7f2Eli Friedman case CK_FloatingToIntegral: 23575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case CK_FloatingCast: 23585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case CK_AnyPointerToObjCPointerCast: 2359ab3a852ae713189444dcbf75e70accf1e8c2b7f2Eli Friedman case CK_AnyPointerToBlockPointerCast: 2360ab3a852ae713189444dcbf75e70accf1e8c2b7f2Eli Friedman case CK_ObjCObjectLValueCast: 236117d1b2ac9f8371a0a2e79d4f8e0008658164f080Chris Lattner case CK_FloatingRealToComplex: 236217d1b2ac9f8371a0a2e79d4f8e0008658164f080Chris Lattner case CK_FloatingComplexToReal: 2363ab3a852ae713189444dcbf75e70accf1e8c2b7f2Eli Friedman case CK_FloatingComplexCast: 2364ab3a852ae713189444dcbf75e70accf1e8c2b7f2Eli Friedman case CK_FloatingComplexToIntegralComplex: 23651eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump case CK_IntegralRealToComplex: 23665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case CK_IntegralComplexToReal: 23675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case CK_IntegralComplexCast: 23685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case CK_IntegralComplexToFloatingComplex: 2369ad90e96fb7eed26d5217dd06ba50ecbbbebb59e6Douglas Gregor case CK_ObjCProduceObject: 2370ad90e96fb7eed26d5217dd06ba50ecbbbebb59e6Douglas Gregor case CK_ObjCConsumeObject: 2371ad90e96fb7eed26d5217dd06ba50ecbbbebb59e6Douglas Gregor case CK_ObjCReclaimReturnedObject: 2372ad90e96fb7eed26d5217dd06ba50ecbbbebb59e6Douglas Gregor assert(!getType()->isBooleanType() && "unheralded conversion to bool"); 2373ab3a852ae713189444dcbf75e70accf1e8c2b7f2Eli Friedman // fallthrough to check for null base path 2374ab3a852ae713189444dcbf75e70accf1e8c2b7f2Eli Friedman 2375ab3a852ae713189444dcbf75e70accf1e8c2b7f2Eli Friedman case CK_Dependent: 2376ab3a852ae713189444dcbf75e70accf1e8c2b7f2Eli Friedman case CK_LValueToRValue: 2377ad90e96fb7eed26d5217dd06ba50ecbbbebb59e6Douglas Gregor case CK_GetObjCProperty: 2378ad90e96fb7eed26d5217dd06ba50ecbbbebb59e6Douglas Gregor case CK_NoOp: 2379ab3a852ae713189444dcbf75e70accf1e8c2b7f2Eli Friedman case CK_PointerToBoolean: 2380ad90e96fb7eed26d5217dd06ba50ecbbbebb59e6Douglas Gregor case CK_IntegralToBoolean: 2381ad90e96fb7eed26d5217dd06ba50ecbbbebb59e6Douglas Gregor case CK_FloatingToBoolean: 23825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case CK_MemberPointerToBoolean: 23831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump case CK_FloatingComplexToBoolean: 23841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump case CK_IntegralComplexToBoolean: 23855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case CK_LValueBitCast: // -> bool& 23865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case CK_UserDefinedConversion: // operator bool() 23875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer assert(path_empty() && "Cast kind should not have a base path!"); 23885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 23895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 23905f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#endif 23915f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 23921237c673c07f9d827129ba02720108816abde562Ted Kremenek 23935549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek const CXXBaseSpecifier * const *path_buffer() const { 239447e1f7c68bf375cac470fdb2b599ddbb395aeb52Douglas Gregor return const_cast<CastExpr*>(this)->path_buffer(); 23955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 239647e1f7c68bf375cac470fdb2b599ddbb395aeb52Douglas Gregor CXXBaseSpecifier **path_buffer(); 239747e1f7c68bf375cac470fdb2b599ddbb395aeb52Douglas Gregor 2398898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor void setBasePathSize(unsigned basePathSize) { 2399898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor CastExprBits.BasePathSize = basePathSize; 2400898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor assert(CastExprBits.BasePathSize == basePathSize && 2401898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor "basePathSize doesn't fit in bits of CastExprBits.BasePathSize!"); 2402898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor } 24031eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2404898574e7496ba8fd76290079d3a9d06954992734Douglas Gregorprotected: 240547e1f7c68bf375cac470fdb2b599ddbb395aeb52Douglas Gregor CastExpr(StmtClass SC, QualType ty, ExprValueKind VK, 240647e1f7c68bf375cac470fdb2b599ddbb395aeb52Douglas Gregor const CastKind kind, Expr *op, unsigned BasePathSize) : 240747e1f7c68bf375cac470fdb2b599ddbb395aeb52Douglas Gregor Expr(SC, ty, VK, OK_Ordinary, 24081237c673c07f9d827129ba02720108816abde562Ted Kremenek // Cast expressions are type-dependent if the type is 24091237c673c07f9d827129ba02720108816abde562Ted Kremenek // dependent (C++ [temp.dep.expr]p3). 24101237c673c07f9d827129ba02720108816abde562Ted Kremenek ty->isDependentType(), 24111237c673c07f9d827129ba02720108816abde562Ted Kremenek // Cast expressions are value-dependent if the type is 24125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // dependent or if the subexpression is value-dependent. 2413ad90e96fb7eed26d5217dd06ba50ecbbbebb59e6Douglas Gregor ty->isDependentType() || (op && op->isValueDependent()), 2414ad90e96fb7eed26d5217dd06ba50ecbbbebb59e6Douglas Gregor (ty->isInstantiationDependentType() || 2415ad90e96fb7eed26d5217dd06ba50ecbbbebb59e6Douglas Gregor (op && op->isInstantiationDependent())), 2416ad90e96fb7eed26d5217dd06ba50ecbbbebb59e6Douglas Gregor (ty->containsUnexpandedParameterPack() || 2417395a2abf0028968d85958610e393e067885dc14fTed Kremenek op->containsUnexpandedParameterPack())), 2418395a2abf0028968d85958610e393e067885dc14fTed Kremenek Op(op) { 24195549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek assert(kind != CK_Invalid && "creating cast with invalid cast kind"); 2420ad90e96fb7eed26d5217dd06ba50ecbbbebb59e6Douglas Gregor CastExprBits.Kind = kind; 2421395a2abf0028968d85958610e393e067885dc14fTed Kremenek setBasePathSize(BasePathSize); 2422395a2abf0028968d85958610e393e067885dc14fTed Kremenek CheckCastConsistency(); 2423395a2abf0028968d85958610e393e067885dc14fTed Kremenek } 2424395a2abf0028968d85958610e393e067885dc14fTed Kremenek 2425395a2abf0028968d85958610e393e067885dc14fTed Kremenek /// \brief Construct an empty cast. 2426395a2abf0028968d85958610e393e067885dc14fTed Kremenek CastExpr(StmtClass SC, EmptyShell Empty, unsigned BasePathSize) 24271eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump : Expr(SC, Empty) { 2428395a2abf0028968d85958610e393e067885dc14fTed Kremenek setBasePathSize(BasePathSize); 24295549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek } 2430395a2abf0028968d85958610e393e067885dc14fTed Kremenek 24311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumppublic: 2432395a2abf0028968d85958610e393e067885dc14fTed Kremenek CastKind getCastKind() const { return (CastKind) CastExprBits.Kind; } 2433395a2abf0028968d85958610e393e067885dc14fTed Kremenek void setCastKind(CastKind K) { CastExprBits.Kind = K; } 24345549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek const char *getCastKindName() const; 24351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 24365549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek Expr *getSubExpr() { return cast<Expr>(Op); } 2437ad90e96fb7eed26d5217dd06ba50ecbbbebb59e6Douglas Gregor const Expr *getSubExpr() const { return cast<Expr>(Op); } 2438ad90e96fb7eed26d5217dd06ba50ecbbbebb59e6Douglas Gregor void setSubExpr(Expr *E) { Op = E; } 24395549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek 2440ad90e96fb7eed26d5217dd06ba50ecbbbebb59e6Douglas Gregor /// \brief Retrieve the cast subexpression as it was written in the source 24415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// code, looking through any implicit casts or other intermediate nodes 244247e1f7c68bf375cac470fdb2b599ddbb395aeb52Douglas Gregor /// introduced by semantic analysis. 244347e1f7c68bf375cac470fdb2b599ddbb395aeb52Douglas Gregor Expr *getSubExprAsWritten(); 244447e1f7c68bf375cac470fdb2b599ddbb395aeb52Douglas Gregor const Expr *getSubExprAsWritten() const { 244547e1f7c68bf375cac470fdb2b599ddbb395aeb52Douglas Gregor return const_cast<CastExpr *>(this)->getSubExprAsWritten(); 244647e1f7c68bf375cac470fdb2b599ddbb395aeb52Douglas Gregor } 244747e1f7c68bf375cac470fdb2b599ddbb395aeb52Douglas Gregor 24485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer typedef CXXBaseSpecifier **path_iterator; 24495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer typedef const CXXBaseSpecifier * const *path_const_iterator; 24505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool path_empty() const { return CastExprBits.BasePathSize == 0; } 24511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump unsigned path_size() const { return CastExprBits.BasePathSize; } 24521eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump path_iterator path_begin() { return path_buffer(); } 24535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer path_iterator path_end() { return path_buffer() + path_size(); } 24545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer path_const_iterator path_begin() const { return path_buffer(); } 24551eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump path_const_iterator path_end() const { return path_buffer() + path_size(); } 24561237c673c07f9d827129ba02720108816abde562Ted Kremenek 24571237c673c07f9d827129ba02720108816abde562Ted Kremenek void setCastPath(const CXXCastPath &Path); 24581237c673c07f9d827129ba02720108816abde562Ted Kremenek 24595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer static bool classof(const Stmt *T) { 24605f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return T->getStmtClass() >= firstCastExprConstant && 24616481a57fefbf1a313ff439028470fe4c27a3b7a3Chris Lattner T->getStmtClass() <= lastCastExprConstant; 24626481a57fefbf1a313ff439028470fe4c27a3b7a3Chris Lattner } 24635f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer static bool classof(const CastExpr *) { return true; } 24645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 24655f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Iterators 24666481a57fefbf1a313ff439028470fe4c27a3b7a3Chris Lattner child_range children() { return child_range(&Op, &Op+1); } 24676481a57fefbf1a313ff439028470fe4c27a3b7a3Chris Lattner}; 24682333f7727f97018d6742e1e0938133bcfad967abEli Friedman 24692333f7727f97018d6742e1e0938133bcfad967abEli Friedman/// ImplicitCastExpr - Allows us to explicitly represent implicit type 24701eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// conversions, which have no direct representation in the original 24717d5c2f241c74e5f8d9ec492e8f9f268e5e9ae41fDouglas Gregor/// source code. For example: converting T[]->T*, void f()->void 24721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// (*f)(), float->double, short->int, etc. 24737d5c2f241c74e5f8d9ec492e8f9f268e5e9ae41fDouglas Gregor/// 24747d5c2f241c74e5f8d9ec492e8f9f268e5e9ae41fDouglas Gregor/// In C, implicit casts always produce rvalues. However, in C++, an 24757d5c2f241c74e5f8d9ec492e8f9f268e5e9ae41fDouglas Gregor/// implicit cast whose result is being bound to a reference will be 24767d5c2f241c74e5f8d9ec492e8f9f268e5e9ae41fDouglas Gregor/// an lvalue or xvalue. For example: 24777d5c2f241c74e5f8d9ec492e8f9f268e5e9ae41fDouglas Gregor/// 24787d5c2f241c74e5f8d9ec492e8f9f268e5e9ae41fDouglas Gregor/// @code 24797d5c2f241c74e5f8d9ec492e8f9f268e5e9ae41fDouglas Gregor/// class Base { }; 24805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// class Derived : public Base { }; 24815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// Derived &&ref(); 24825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// void f(Derived d) { 24831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// Base& b = d; // initializer is an ImplicitCastExpr 24845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// // to an lvalue of type Base 24857d5c2f241c74e5f8d9ec492e8f9f268e5e9ae41fDouglas Gregor/// Base&& r = ref(); // initializer is an ImplicitCastExpr 24867d5c2f241c74e5f8d9ec492e8f9f268e5e9ae41fDouglas Gregor/// // to an xvalue of type Base 24875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// } 24881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// @endcode 24895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass ImplicitCastExpr : public CastExpr { 24906481a57fefbf1a313ff439028470fe4c27a3b7a3Chris Lattnerprivate: 24911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump ImplicitCastExpr(QualType ty, CastKind kind, Expr *op, 24921237c673c07f9d827129ba02720108816abde562Ted Kremenek unsigned BasePathLength, ExprValueKind VK) 24931237c673c07f9d827129ba02720108816abde562Ted Kremenek : CastExpr(ImplicitCastExprClass, ty, VK, kind, op, BasePathLength) { 24941237c673c07f9d827129ba02720108816abde562Ted Kremenek } 24955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2496ab18c4c0ac1a46a38aa84c2c8ea485612e21a614Chris Lattner /// \brief Construct an empty implicit cast. 2497ab18c4c0ac1a46a38aa84c2c8ea485612e21a614Chris Lattner explicit ImplicitCastExpr(EmptyShell Shell, unsigned PathSize) 2498ab18c4c0ac1a46a38aa84c2c8ea485612e21a614Chris Lattner : CastExpr(ImplicitCastExprClass, Shell, PathSize) { } 2499ab18c4c0ac1a46a38aa84c2c8ea485612e21a614Chris Lattner 2500ab18c4c0ac1a46a38aa84c2c8ea485612e21a614Chris Lattnerpublic: 25015549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek enum OnStack_t { OnStack }; 2502ab18c4c0ac1a46a38aa84c2c8ea485612e21a614Chris Lattner ImplicitCastExpr(OnStack_t _, QualType ty, CastKind kind, Expr *op, 2503ab18c4c0ac1a46a38aa84c2c8ea485612e21a614Chris Lattner ExprValueKind VK) 25042333f7727f97018d6742e1e0938133bcfad967abEli Friedman : CastExpr(ImplicitCastExprClass, ty, VK, kind, op, 0) { 2505d34e915f33224c508ad55fbf975bd10b7876e197Steve Naroff } 2506d34e915f33224c508ad55fbf975bd10b7876e197Steve Naroff 25072333f7727f97018d6742e1e0938133bcfad967abEli Friedman static ImplicitCastExpr *Create(ASTContext &Context, QualType T, 25082333f7727f97018d6742e1e0938133bcfad967abEli Friedman CastKind Kind, Expr *Operand, 25091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const CXXCastPath *BasePath, 25106a2dd55b0b3ae376d449a4b07bbb6b2d30b26330Douglas Gregor ExprValueKind Cat); 25116a2dd55b0b3ae376d449a4b07bbb6b2d30b26330Douglas Gregor 25126a2dd55b0b3ae376d449a4b07bbb6b2d30b26330Douglas Gregor static ImplicitCastExpr *CreateEmpty(ASTContext &Context, unsigned PathSize); 25135549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek 25145549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek SourceRange getSourceRange() const { 25156a2dd55b0b3ae376d449a4b07bbb6b2d30b26330Douglas Gregor return getSubExpr()->getSourceRange(); 25166a2dd55b0b3ae376d449a4b07bbb6b2d30b26330Douglas Gregor } 2517ab18c4c0ac1a46a38aa84c2c8ea485612e21a614Chris Lattner 2518ab18c4c0ac1a46a38aa84c2c8ea485612e21a614Chris Lattner static bool classof(const Stmt *T) { 2519ab18c4c0ac1a46a38aa84c2c8ea485612e21a614Chris Lattner return T->getStmtClass() == ImplicitCastExprClass; 25201eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 2521026dc96ac6ece60da5e1b98e2a71bd0ff0939fd8Chris Lattner static bool classof(const ImplicitCastExpr *) { return true; } 25226a2dd55b0b3ae376d449a4b07bbb6b2d30b26330Douglas Gregor}; 2523026dc96ac6ece60da5e1b98e2a71bd0ff0939fd8Chris Lattner 25246a2dd55b0b3ae376d449a4b07bbb6b2d30b26330Douglas Gregorinline Expr *Expr::IgnoreImpCasts() { 25251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Expr *e = this; 2526ab18c4c0ac1a46a38aa84c2c8ea485612e21a614Chris Lattner while (ImplicitCastExpr *ice = dyn_cast<ImplicitCastExpr>(e)) 25271eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump e = ice->getSubExpr(); 2528ab18c4c0ac1a46a38aa84c2c8ea485612e21a614Chris Lattner return e; 2529ab18c4c0ac1a46a38aa84c2c8ea485612e21a614Chris Lattner} 25301eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 25311237c673c07f9d827129ba02720108816abde562Ted Kremenek/// ExplicitCastExpr - An explicit cast written in the source 25321237c673c07f9d827129ba02720108816abde562Ted Kremenek/// code. 25331237c673c07f9d827129ba02720108816abde562Ted Kremenek/// 2534ab18c4c0ac1a46a38aa84c2c8ea485612e21a614Chris Lattner/// This class is effectively an abstract class, because it provides 2535ab18c4c0ac1a46a38aa84c2c8ea485612e21a614Chris Lattner/// the basic representation of an explicitly-written cast without 2536dc241b42c7588f99027b035a09b71557a6db219eDouglas Gregor/// specifying which kind of cast (C cast, functional cast, static 2537d34e915f33224c508ad55fbf975bd10b7876e197Steve Naroff/// cast, etc.) was written; specific derived classes represent the 2538d34e915f33224c508ad55fbf975bd10b7876e197Steve Naroff/// particular style of cast and its location information. 2539d34e915f33224c508ad55fbf975bd10b7876e197Steve Naroff/// 2540d34e915f33224c508ad55fbf975bd10b7876e197Steve Naroff/// Unlike implicit casts, explicit cast nodes have two different 25413fcb73dae91be42b071cf0dde9222b7ec362146dAbramo Bagnara/// types: the type that was written into the source code, and the 25423fcb73dae91be42b071cf0dde9222b7ec362146dAbramo Bagnara/// actual type of the expression as determined by semantic 2543363bcff47df2fda3cfcfcd994b7888157df58c43Steve Naroff/// analysis. These types may differ slightly. For example, in C++ one 2544d34e915f33224c508ad55fbf975bd10b7876e197Steve Naroff/// can cast to a reference type, which indicates that the resulting 25451eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// expression will be an lvalue or xvalue. The reference type, however, 25463fcb73dae91be42b071cf0dde9222b7ec362146dAbramo Bagnara/// will not be used as the type of the expression. 25473fcb73dae91be42b071cf0dde9222b7ec362146dAbramo Bagnaraclass ExplicitCastExpr : public CastExpr { 25482333f7727f97018d6742e1e0938133bcfad967abEli Friedman /// TInfo - Source type info for the (written) type 25493fcb73dae91be42b071cf0dde9222b7ec362146dAbramo Bagnara /// this expression is casting to. 2550d34e915f33224c508ad55fbf975bd10b7876e197Steve Naroff TypeSourceInfo *TInfo; 255144cae0c8669cdf83618cbe7fd36ea7a8e51cf97fDouglas Gregor 255244cae0c8669cdf83618cbe7fd36ea7a8e51cf97fDouglas Gregorprotected: 255344cae0c8669cdf83618cbe7fd36ea7a8e51cf97fDouglas Gregor ExplicitCastExpr(StmtClass SC, QualType exprTy, ExprValueKind VK, 255444cae0c8669cdf83618cbe7fd36ea7a8e51cf97fDouglas Gregor CastKind kind, Expr *op, unsigned PathSize, 25553fcb73dae91be42b071cf0dde9222b7ec362146dAbramo Bagnara TypeSourceInfo *writtenTy) 25563fcb73dae91be42b071cf0dde9222b7ec362146dAbramo Bagnara : CastExpr(SC, exprTy, VK, kind, op, PathSize), TInfo(writtenTy) {} 25573fcb73dae91be42b071cf0dde9222b7ec362146dAbramo Bagnara 25583fcb73dae91be42b071cf0dde9222b7ec362146dAbramo Bagnara /// \brief Construct an empty explicit cast. 25593fcb73dae91be42b071cf0dde9222b7ec362146dAbramo Bagnara ExplicitCastExpr(StmtClass SC, EmptyShell Shell, unsigned PathSize) 25603fcb73dae91be42b071cf0dde9222b7ec362146dAbramo Bagnara : CastExpr(SC, Shell, PathSize) { } 25613fcb73dae91be42b071cf0dde9222b7ec362146dAbramo Bagnara 25621eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumppublic: 256344cae0c8669cdf83618cbe7fd36ea7a8e51cf97fDouglas Gregor /// getTypeInfoAsWritten - Returns the type source info for the type 256444cae0c8669cdf83618cbe7fd36ea7a8e51cf97fDouglas Gregor /// that this expression is casting to. 25651eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump TypeSourceInfo *getTypeInfoAsWritten() const { return TInfo; } 256644cae0c8669cdf83618cbe7fd36ea7a8e51cf97fDouglas Gregor void setTypeInfoAsWritten(TypeSourceInfo *writtenTy) { TInfo = writtenTy; } 256744cae0c8669cdf83618cbe7fd36ea7a8e51cf97fDouglas Gregor 25681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// getTypeAsWritten - Returns the type that this expression is 2569d34e915f33224c508ad55fbf975bd10b7876e197Steve Naroff /// casting to, as written in the source code. 2570363bcff47df2fda3cfcfcd994b7888157df58c43Steve Naroff QualType getTypeAsWritten() const { return TInfo->getType(); } 2571d34e915f33224c508ad55fbf975bd10b7876e197Steve Naroff 2572d34e915f33224c508ad55fbf975bd10b7876e197Steve Naroff static bool classof(const Stmt *T) { 25731eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return T->getStmtClass() >= firstExplicitCastExprConstant && 2574d34e915f33224c508ad55fbf975bd10b7876e197Steve Naroff T->getStmtClass() <= lastExplicitCastExprConstant; 2575d34e915f33224c508ad55fbf975bd10b7876e197Steve Naroff } 25761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump static bool classof(const ExplicitCastExpr *) { return true; } 25771237c673c07f9d827129ba02720108816abde562Ted Kremenek}; 25781237c673c07f9d827129ba02720108816abde562Ted Kremenek 25791237c673c07f9d827129ba02720108816abde562Ted Kremenek/// CStyleCastExpr - An explicit cast in C (C99 6.5.4) or a C-style 2580d34e915f33224c508ad55fbf975bd10b7876e197Steve Naroff/// cast in C++ (C++ [expr.cast]), which uses the syntax 2581d34e915f33224c508ad55fbf975bd10b7876e197Steve Naroff/// (Type)expr. For example: @c (int)f. 2582d38617c8a50f9729c254ab76cd359af797c6739bEli Friedmanclass CStyleCastExpr : public ExplicitCastExpr { 2583d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman SourceLocation LPLoc; // the location of the left paren 2584d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman SourceLocation RPLoc; // the location of the right paren 2585d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman 2586d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman CStyleCastExpr(QualType exprTy, ExprValueKind vk, CastKind kind, Expr *op, 2587d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman unsigned PathSize, TypeSourceInfo *writtenTy, 2588d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman SourceLocation l, SourceLocation r) 2589d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman : ExplicitCastExpr(CStyleCastExprClass, exprTy, vk, kind, op, PathSize, 2590d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman writtenTy), LPLoc(l), RPLoc(r) {} 2591d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman 2592d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman /// \brief Construct an empty C-style explicit cast. 2593d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman explicit CStyleCastExpr(EmptyShell Shell, unsigned PathSize) 2594d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman : ExplicitCastExpr(CStyleCastExprClass, Shell, PathSize) { } 25955549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek 2596d38617c8a50f9729c254ab76cd359af797c6739bEli Friedmanpublic: 2597d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman static CStyleCastExpr *Create(ASTContext &Context, QualType T, 2598d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman ExprValueKind VK, CastKind K, 25992333f7727f97018d6742e1e0938133bcfad967abEli Friedman Expr *Op, const CXXCastPath *BasePath, 26002333f7727f97018d6742e1e0938133bcfad967abEli Friedman TypeSourceInfo *WrittenTy, SourceLocation L, 2601a88dc3079bedf70a5cfc39791727e43a10383006Nate Begeman SourceLocation R); 26021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 26031eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump static CStyleCastExpr *CreateEmpty(ASTContext &Context, unsigned PathSize); 26042333f7727f97018d6742e1e0938133bcfad967abEli Friedman 26052333f7727f97018d6742e1e0938133bcfad967abEli Friedman SourceLocation getLParenLoc() const { return LPLoc; } 26061eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump void setLParenLoc(SourceLocation L) { LPLoc = L; } 2607a88dc3079bedf70a5cfc39791727e43a10383006Nate Begeman 2608d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman SourceLocation getRParenLoc() const { return RPLoc; } 2609d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman void setRParenLoc(SourceLocation L) { RPLoc = L; } 2610d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman 261194cd5d1397bb1a8bcd109602aa38dd787b164c22Douglas Gregor SourceRange getSourceRange() const { 261294cd5d1397bb1a8bcd109602aa38dd787b164c22Douglas Gregor return SourceRange(LPLoc, getSubExpr()->getSourceRange().getEnd()); 26131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 261494cd5d1397bb1a8bcd109602aa38dd787b164c22Douglas Gregor static bool classof(const Stmt *T) { 261594cd5d1397bb1a8bcd109602aa38dd787b164c22Douglas Gregor return T->getStmtClass() == CStyleCastExprClass; 261694cd5d1397bb1a8bcd109602aa38dd787b164c22Douglas Gregor } 261794cd5d1397bb1a8bcd109602aa38dd787b164c22Douglas Gregor static bool classof(const CStyleCastExpr *) { return true; } 26181eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump}; 261994cd5d1397bb1a8bcd109602aa38dd787b164c22Douglas Gregor 262094cd5d1397bb1a8bcd109602aa38dd787b164c22Douglas Gregor/// \brief A builtin binary operation expression such as "x + y" or "x <= y". 262194cd5d1397bb1a8bcd109602aa38dd787b164c22Douglas Gregor/// 2622d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman/// This expression node kind describes a builtin binary operation, 2623d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman/// such as "x + y" for integer values "x" and "y". The operands will 2624d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman/// already have been converted to appropriate types (e.g., by 2625d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman/// performing promotions or conversions). 26261eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// 2627d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman/// In C++, where operators may be overloaded, a different kind of 2628d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman/// expression node (CXXOperatorCallExpr) is used to express the 26291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// invocation of an overloaded operator with operator syntax. Within 2630d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman/// a C++ template, whether BinaryOperator or CXXOperatorCallExpr is 2631d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman/// used to store an expression "x + y" depends on the subexpressions 2632d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman/// for x and y. If neither x or y is type-dependent, and the "+" 2633d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman/// operator resolves to a built-in operation, BinaryOperator will be 26341eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// used to express the computation (x and y may still be 2635d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman/// value-dependent). If either x or y is type-dependent, or if the 2636d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman/// "+" resolves to an overloaded operator, CXXOperatorCallExpr will 2637d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman/// be used to express the computation. 26385549976193e34417d4474a5f4a514268ef6666c7Ted Kremenekclass BinaryOperator : public Expr { 2639d38617c8a50f9729c254ab76cd359af797c6739bEli Friedmanpublic: 2640d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman typedef BinaryOperatorKind Opcode; 2641d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman 26425549976193e34417d4474a5f4a514268ef6666c7Ted Kremenekprivate: 2643d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman unsigned Opc : 6; 26441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SourceLocation OpLoc; 2645888376a2bbcfc2f047902249f8455918e2489ae1Nate Begeman 264694cd5d1397bb1a8bcd109602aa38dd787b164c22Douglas Gregor enum { LHS, RHS, END_EXPR }; 2647dde8c94873976632e3ada4d8d067e1e244184d51Eli Friedman Stmt* SubExprs[END_EXPR]; 2648dde8c94873976632e3ada4d8d067e1e244184d51Eli Friedmanpublic: 26499a901bb63990574ff0bcc12ff851d7a71cff8ddbEli Friedman 2650d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman BinaryOperator(Expr *lhs, Expr *rhs, Opcode opc, QualType ResTy, 26511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump ExprValueKind VK, ExprObjectKind OK, 2652d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman SourceLocation opLoc) 2653d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman : Expr(BinaryOperatorClass, ResTy, VK, OK, 2654d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman lhs->isTypeDependent() || rhs->isTypeDependent(), 2655d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman lhs->isValueDependent() || rhs->isValueDependent(), 2656d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman (lhs->isInstantiationDependent() || 2657d04fdd5f99f985abf2e7b7d7d4d427eebe001e55Steve Naroff rhs->isInstantiationDependent()), 26581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump (lhs->containsUnexpandedParameterPack() || 2659d04fdd5f99f985abf2e7b7d7d4d427eebe001e55Steve Naroff rhs->containsUnexpandedParameterPack())), 26607976932a1c256d447316ffac58e9821417725e34Eli Friedman Opc(opc), OpLoc(opLoc) { 26617976932a1c256d447316ffac58e9821417725e34Eli Friedman SubExprs[LHS] = lhs; 26627976932a1c256d447316ffac58e9821417725e34Eli Friedman SubExprs[RHS] = rhs; 26637976932a1c256d447316ffac58e9821417725e34Eli Friedman assert(!isCompoundAssignmentOp() && 26647976932a1c256d447316ffac58e9821417725e34Eli Friedman "Use ArithAssignBinaryOperator for compound assignments"); 26657976932a1c256d447316ffac58e9821417725e34Eli Friedman } 2666d04fdd5f99f985abf2e7b7d7d4d427eebe001e55Steve Naroff 26671237c673c07f9d827129ba02720108816abde562Ted Kremenek /// \brief Construct an empty binary operator. 26685549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek explicit BinaryOperator(EmptyShell Empty) 2669d04fdd5f99f985abf2e7b7d7d4d427eebe001e55Steve Naroff : Expr(BinaryOperatorClass, Empty), Opc(BO_Comma) { } 2670d04fdd5f99f985abf2e7b7d7d4d427eebe001e55Steve Naroff 2671d04fdd5f99f985abf2e7b7d7d4d427eebe001e55Steve Naroff SourceLocation getOperatorLoc() const { return OpLoc; } 2672ce94049b69f75b44c18584fe79cd238978b6b0d5Douglas Gregor void setOperatorLoc(SourceLocation L) { OpLoc = L; } 2673ce94049b69f75b44c18584fe79cd238978b6b0d5Douglas Gregor 26741237c673c07f9d827129ba02720108816abde562Ted Kremenek Opcode getOpcode() const { return static_cast<Opcode>(Opc); } 26751237c673c07f9d827129ba02720108816abde562Ted Kremenek void setOpcode(Opcode O) { Opc = O; } 26761237c673c07f9d827129ba02720108816abde562Ted Kremenek 26771237c673c07f9d827129ba02720108816abde562Ted Kremenek Expr *getLHS() const { return cast<Expr>(SubExprs[LHS]); } 26781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump void setLHS(Expr *E) { SubExprs[LHS] = E; } 26797976932a1c256d447316ffac58e9821417725e34Eli Friedman Expr *getRHS() const { return cast<Expr>(SubExprs[RHS]); } 268044cae0c8669cdf83618cbe7fd36ea7a8e51cf97fDouglas Gregor void setRHS(Expr *E) { SubExprs[RHS] = E; } 268144cae0c8669cdf83618cbe7fd36ea7a8e51cf97fDouglas Gregor 268244cae0c8669cdf83618cbe7fd36ea7a8e51cf97fDouglas Gregor SourceRange getSourceRange() const { 26837976932a1c256d447316ffac58e9821417725e34Eli Friedman return SourceRange(getLHS()->getLocStart(), getRHS()->getLocEnd()); 26847976932a1c256d447316ffac58e9821417725e34Eli Friedman } 268527437caadea35f84d550cd29f024fcf3ea240eecChris Lattner 26867976932a1c256d447316ffac58e9821417725e34Eli Friedman /// getOpcodeStr - Turn an Opcode enum value into the punctuation char it 26877976932a1c256d447316ffac58e9821417725e34Eli Friedman /// corresponds to, e.g. "<<=". 26887976932a1c256d447316ffac58e9821417725e34Eli Friedman static const char *getOpcodeStr(Opcode Op); 26897976932a1c256d447316ffac58e9821417725e34Eli Friedman 26907976932a1c256d447316ffac58e9821417725e34Eli Friedman const char *getOpcodeStr() const { return getOpcodeStr(getOpcode()); } 26917976932a1c256d447316ffac58e9821417725e34Eli Friedman 26927976932a1c256d447316ffac58e9821417725e34Eli Friedman /// \brief Retrieve the binary opcode that corresponds to the given 26935549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek /// overloaded operator. 269444cae0c8669cdf83618cbe7fd36ea7a8e51cf97fDouglas Gregor static Opcode getOverloadedOpcode(OverloadedOperatorKind OO); 26955549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek 269644cae0c8669cdf83618cbe7fd36ea7a8e51cf97fDouglas Gregor /// \brief Retrieve the overloaded operator kind that corresponds to 26975549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek /// the given binary opcode. 269844cae0c8669cdf83618cbe7fd36ea7a8e51cf97fDouglas Gregor static OverloadedOperatorKind getOverloadedOperator(Opcode Opc); 269944cae0c8669cdf83618cbe7fd36ea7a8e51cf97fDouglas Gregor 270044cae0c8669cdf83618cbe7fd36ea7a8e51cf97fDouglas Gregor /// predicates to categorize the respective opcodes. 270144cae0c8669cdf83618cbe7fd36ea7a8e51cf97fDouglas Gregor bool isPtrMemOp() const { return Opc == BO_PtrMemD || Opc == BO_PtrMemI; } 27021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump bool isMultiplicativeOp() const { return Opc >= BO_Mul && Opc <= BO_Rem; } 270344cae0c8669cdf83618cbe7fd36ea7a8e51cf97fDouglas Gregor static bool isAdditiveOp(Opcode Opc) { return Opc == BO_Add || Opc==BO_Sub; } 270444cae0c8669cdf83618cbe7fd36ea7a8e51cf97fDouglas Gregor bool isAdditiveOp() const { return isAdditiveOp(getOpcode()); } 27051237c673c07f9d827129ba02720108816abde562Ted Kremenek static bool isShiftOp(Opcode Opc) { return Opc == BO_Shl || Opc == BO_Shr; } 2706d04fdd5f99f985abf2e7b7d7d4d427eebe001e55Steve Naroff bool isShiftOp() const { return isShiftOp(getOpcode()); } 2707d04fdd5f99f985abf2e7b7d7d4d427eebe001e55Steve Naroff 2708d04fdd5f99f985abf2e7b7d7d4d427eebe001e55Steve Naroff static bool isBitwiseOp(Opcode Opc) { return Opc >= BO_And && Opc <= BO_Or; } 2709d04fdd5f99f985abf2e7b7d7d4d427eebe001e55Steve Naroff bool isBitwiseOp() const { return isBitwiseOp(getOpcode()); } 27101eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2711d04fdd5f99f985abf2e7b7d7d4d427eebe001e55Steve Naroff static bool isRelationalOp(Opcode Opc) { return Opc >= BO_LT && Opc<=BO_GE; } 2712d04fdd5f99f985abf2e7b7d7d4d427eebe001e55Steve Naroff bool isRelationalOp() const { return isRelationalOp(getOpcode()); } 27131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 27141237c673c07f9d827129ba02720108816abde562Ted Kremenek static bool isEqualityOp(Opcode Opc) { return Opc == BO_EQ || Opc == BO_NE; } 27151237c673c07f9d827129ba02720108816abde562Ted Kremenek bool isEqualityOp() const { return isEqualityOp(getOpcode()); } 27161237c673c07f9d827129ba02720108816abde562Ted Kremenek 2717d04fdd5f99f985abf2e7b7d7d4d427eebe001e55Steve Naroff static bool isComparisonOp(Opcode Opc) { return Opc >= BO_LT && Opc<=BO_NE; } 2718d04fdd5f99f985abf2e7b7d7d4d427eebe001e55Steve Naroff bool isComparisonOp() const { return isComparisonOp(getOpcode()); } 27192d8b273470684a9cd47f0ce24743cc1f71ef7cbcDouglas Gregor 27202d8b273470684a9cd47f0ce24743cc1f71ef7cbcDouglas Gregor static bool isLogicalOp(Opcode Opc) { return Opc == BO_LAnd || Opc==BO_LOr; } 27212d8b273470684a9cd47f0ce24743cc1f71ef7cbcDouglas Gregor bool isLogicalOp() const { return isLogicalOp(getOpcode()); } 27222d8b273470684a9cd47f0ce24743cc1f71ef7cbcDouglas Gregor 27232d8b273470684a9cd47f0ce24743cc1f71ef7cbcDouglas Gregor static bool isAssignmentOp(Opcode Opc) { 27242d8b273470684a9cd47f0ce24743cc1f71ef7cbcDouglas Gregor return Opc >= BO_Assign && Opc <= BO_OrAssign; 27252d8b273470684a9cd47f0ce24743cc1f71ef7cbcDouglas Gregor } 27262d8b273470684a9cd47f0ce24743cc1f71ef7cbcDouglas Gregor bool isAssignmentOp() const { return isAssignmentOp(getOpcode()); } 27272d8b273470684a9cd47f0ce24743cc1f71ef7cbcDouglas Gregor 27282d8b273470684a9cd47f0ce24743cc1f71ef7cbcDouglas Gregor static bool isCompoundAssignmentOp(Opcode Opc) { 27292d8b273470684a9cd47f0ce24743cc1f71ef7cbcDouglas Gregor return Opc > BO_Assign && Opc <= BO_OrAssign; 27301eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 27312333f7727f97018d6742e1e0938133bcfad967abEli Friedman bool isCompoundAssignmentOp() const { 27322d8b273470684a9cd47f0ce24743cc1f71ef7cbcDouglas Gregor return isCompoundAssignmentOp(getOpcode()); 273344cae0c8669cdf83618cbe7fd36ea7a8e51cf97fDouglas Gregor } 273444cae0c8669cdf83618cbe7fd36ea7a8e51cf97fDouglas Gregor 273544cae0c8669cdf83618cbe7fd36ea7a8e51cf97fDouglas Gregor static bool isShiftAssignOp(Opcode Opc) { 27362d8b273470684a9cd47f0ce24743cc1f71ef7cbcDouglas Gregor return Opc == BO_ShlAssign || Opc == BO_ShrAssign; 27372d8b273470684a9cd47f0ce24743cc1f71ef7cbcDouglas Gregor } 273844cae0c8669cdf83618cbe7fd36ea7a8e51cf97fDouglas Gregor bool isShiftAssignOp() const { 27392d8b273470684a9cd47f0ce24743cc1f71ef7cbcDouglas Gregor return isShiftAssignOp(getOpcode()); 27402d8b273470684a9cd47f0ce24743cc1f71ef7cbcDouglas Gregor } 27412d8b273470684a9cd47f0ce24743cc1f71ef7cbcDouglas Gregor 27422d8b273470684a9cd47f0ce24743cc1f71ef7cbcDouglas Gregor static bool classof(const Stmt *S) { 27432d8b273470684a9cd47f0ce24743cc1f71ef7cbcDouglas Gregor return S->getStmtClass() >= firstBinaryOperatorConstant && 27441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump S->getStmtClass() <= lastBinaryOperatorConstant; 27452d8b273470684a9cd47f0ce24743cc1f71ef7cbcDouglas Gregor } 27462d8b273470684a9cd47f0ce24743cc1f71ef7cbcDouglas Gregor static bool classof(const BinaryOperator *) { return true; } 27471eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 27482d8b273470684a9cd47f0ce24743cc1f71ef7cbcDouglas Gregor // Iterators 27492d8b273470684a9cd47f0ce24743cc1f71ef7cbcDouglas Gregor child_range children() { 27502d8b273470684a9cd47f0ce24743cc1f71ef7cbcDouglas Gregor return child_range(&SubExprs[0], &SubExprs[0]+END_EXPR); 27512d8b273470684a9cd47f0ce24743cc1f71ef7cbcDouglas Gregor } 27522d8b273470684a9cd47f0ce24743cc1f71ef7cbcDouglas Gregor 275374626d6ef2e194fcc911e071556660ff331eb4a8Zhongxing Xuprotected: 27547c50aca2fe36f6daa9bf1c8c428f30e72f96470aAnders Carlsson BinaryOperator(Expr *lhs, Expr *rhs, Opcode opc, QualType ResTy, 27555549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek ExprValueKind VK, ExprObjectKind OK, 27562cad900202561cdda18ea6cc51ddbf3e20e3c23aAbramo Bagnara SourceLocation opLoc, bool dead) 27577c50aca2fe36f6daa9bf1c8c428f30e72f96470aAnders Carlsson : Expr(CompoundAssignOperatorClass, ResTy, VK, OK, 27587c50aca2fe36f6daa9bf1c8c428f30e72f96470aAnders Carlsson lhs->isTypeDependent() || rhs->isTypeDependent(), 27592cad900202561cdda18ea6cc51ddbf3e20e3c23aAbramo Bagnara lhs->isValueDependent() || rhs->isValueDependent(), 27602cad900202561cdda18ea6cc51ddbf3e20e3c23aAbramo Bagnara (lhs->isInstantiationDependent() || 27612333f7727f97018d6742e1e0938133bcfad967abEli Friedman rhs->isInstantiationDependent()), 27622cad900202561cdda18ea6cc51ddbf3e20e3c23aAbramo Bagnara (lhs->containsUnexpandedParameterPack() || 27637c50aca2fe36f6daa9bf1c8c428f30e72f96470aAnders Carlsson rhs->containsUnexpandedParameterPack())), 27647c50aca2fe36f6daa9bf1c8c428f30e72f96470aAnders Carlsson Opc(opc), OpLoc(opLoc) { 27651eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SubExprs[LHS] = lhs; 276674626d6ef2e194fcc911e071556660ff331eb4a8Zhongxing Xu SubExprs[RHS] = rhs; 2767d3c98a02c73417689deaaa6671ea6df7f2a8a73cDouglas Gregor } 2768d3c98a02c73417689deaaa6671ea6df7f2a8a73cDouglas Gregor 27695549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek BinaryOperator(StmtClass SC, EmptyShell Empty) 27705549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek : Expr(SC, Empty), Opc(BO_MulAssign) { } 2771d3c98a02c73417689deaaa6671ea6df7f2a8a73cDouglas Gregor}; 2772d3c98a02c73417689deaaa6671ea6df7f2a8a73cDouglas Gregor 27732cad900202561cdda18ea6cc51ddbf3e20e3c23aAbramo Bagnara/// CompoundAssignOperator - For compound assignments (e.g. +=), we keep 27742cad900202561cdda18ea6cc51ddbf3e20e3c23aAbramo Bagnara/// track of the type the operation is performed in. Due to the semantics of 27752cad900202561cdda18ea6cc51ddbf3e20e3c23aAbramo Bagnara/// these operators, the operands are promoted, the arithmetic performed, an 2776d3c98a02c73417689deaaa6671ea6df7f2a8a73cDouglas Gregor/// implicit conversion back to the result type done, then the assignment takes 2777d3c98a02c73417689deaaa6671ea6df7f2a8a73cDouglas Gregor/// place. This captures the intermediate type which the computation is done 27781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// in. 2779d3c98a02c73417689deaaa6671ea6df7f2a8a73cDouglas Gregorclass CompoundAssignOperator : public BinaryOperator { 2780d3c98a02c73417689deaaa6671ea6df7f2a8a73cDouglas Gregor QualType ComputationLHSType; 2781d3c98a02c73417689deaaa6671ea6df7f2a8a73cDouglas Gregor QualType ComputationResultType; 27827c50aca2fe36f6daa9bf1c8c428f30e72f96470aAnders Carlssonpublic: 27837c50aca2fe36f6daa9bf1c8c428f30e72f96470aAnders Carlsson CompoundAssignOperator(Expr *lhs, Expr *rhs, Opcode opc, QualType ResType, 27841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump ExprValueKind VK, ExprObjectKind OK, 27857c50aca2fe36f6daa9bf1c8c428f30e72f96470aAnders Carlsson QualType CompLHSType, QualType CompResultType, 27867c50aca2fe36f6daa9bf1c8c428f30e72f96470aAnders Carlsson SourceLocation OpLoc) 27877c50aca2fe36f6daa9bf1c8c428f30e72f96470aAnders Carlsson : BinaryOperator(lhs, rhs, opc, ResType, VK, OK, OpLoc, true), 27887c50aca2fe36f6daa9bf1c8c428f30e72f96470aAnders Carlsson ComputationLHSType(CompLHSType), 27891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump ComputationResultType(CompResultType) { 27907c50aca2fe36f6daa9bf1c8c428f30e72f96470aAnders Carlsson assert(isCompoundAssignmentOp() && 27917c50aca2fe36f6daa9bf1c8c428f30e72f96470aAnders Carlsson "Only should be used for compound assignments"); 27921eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 27937c50aca2fe36f6daa9bf1c8c428f30e72f96470aAnders Carlsson 27941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// \brief Build an empty compound assignment operator expression. 27954c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor explicit CompoundAssignOperator(EmptyShell Empty) 27964c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor : BinaryOperator(CompoundAssignOperatorClass, Empty) { } 27974c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 27984c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // The two computation types are the type the LHS is converted 27994c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // to for the computation and the type of the result; the two are 28004c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // distinct in a few cases (specifically, int+=ptr and ptr-=ptr). 28014c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor QualType getComputationLHSType() const { return ComputationLHSType; } 28024c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor void setComputationLHSType(QualType T) { ComputationLHSType = T; } 28034c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 2804196ef51bc4d008ec1c69851fb3b0f8d036065931Chris Lattner QualType getComputationResultType() const { return ComputationResultType; } 28054c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor void setComputationResultType(QualType T) { ComputationResultType = T; } 28064c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 28074c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor static bool classof(const CompoundAssignOperator *) { return true; } 28084c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor static bool classof(const Stmt *S) { 28094c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor return S->getStmtClass() == CompoundAssignOperatorClass; 28104c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor } 28114c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor}; 28124c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 2813196ef51bc4d008ec1c69851fb3b0f8d036065931Chris Lattner/// AbstractConditionalOperator - An abstract base class for 28144c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// ConditionalOperator and BinaryConditionalOperator. 28154c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregorclass AbstractConditionalOperator : public Expr { 28164c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor SourceLocation QuestionLoc, ColonLoc; 28174c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor friend class ASTStmtReader; 28184c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 28194c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregorprotected: 28204c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor AbstractConditionalOperator(StmtClass SC, QualType T, 28213498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor ExprValueKind VK, ExprObjectKind OK, 28224c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor bool TD, bool VD, bool ID, 28234c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor bool ContainsUnexpandedParameterPack, 28244c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor SourceLocation qloc, 2825196ef51bc4d008ec1c69851fb3b0f8d036065931Chris Lattner SourceLocation cloc) 28264c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor : Expr(SC, T, VK, OK, TD, VD, ID, ContainsUnexpandedParameterPack), 28274c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor QuestionLoc(qloc), ColonLoc(cloc) {} 28284c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 28294c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor AbstractConditionalOperator(StmtClass SC, EmptyShell Empty) 28304c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor : Expr(SC, Empty) { } 28314c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 283266b5a8a39088598c01a9fa6f032dc908612dc8ecAnders Carlssonpublic: 2833ba7bc5584b8d46f4e8deb3a9d363256908fa86eaTed Kremenek // getCond - Return the expression representing the condition for 2834709210feee317b8d6690dd1d15c2b74cfe55e261Ted Kremenek // the ?: operator. 2835709210feee317b8d6690dd1d15c2b74cfe55e261Ted Kremenek Expr *getCond() const; 283666b5a8a39088598c01a9fa6f032dc908612dc8ecAnders Carlsson 28371eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // getTrueExpr - Return the subexpression representing the value of 28384c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // the expression if the condition evaluates to true. 28394c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor Expr *getTrueExpr() const; 28404c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 28414c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // getFalseExpr - Return the subexpression representing the value of 28420bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor // the expression if the condition evaluates to false. This is 28430bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor // the same as getRHS. 28440bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor Expr *getFalseExpr() const; 28450bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor 2846a9c878086036de36482cc21e35a33cabe9699b0aDouglas Gregor SourceLocation getQuestionLoc() const { return QuestionLoc; } 2847a9c878086036de36482cc21e35a33cabe9699b0aDouglas Gregor SourceLocation getColonLoc() const { return ColonLoc; } 2848a9c878086036de36482cc21e35a33cabe9699b0aDouglas Gregor 2849a9c878086036de36482cc21e35a33cabe9699b0aDouglas Gregor static bool classof(const Stmt *T) { 285066b5a8a39088598c01a9fa6f032dc908612dc8ecAnders Carlsson return T->getStmtClass() == ConditionalOperatorClass || 2851709210feee317b8d6690dd1d15c2b74cfe55e261Ted Kremenek T->getStmtClass() == BinaryConditionalOperatorClass; 2852709210feee317b8d6690dd1d15c2b74cfe55e261Ted Kremenek } 2853ba7bc5584b8d46f4e8deb3a9d363256908fa86eaTed Kremenek static bool classof(const AbstractConditionalOperator *) { return true; } 2854d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor}; 2855d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor 2856709210feee317b8d6690dd1d15c2b74cfe55e261Ted Kremenek/// ConditionalOperator - The ?: ternary operator. The GNU "missing 2857709210feee317b8d6690dd1d15c2b74cfe55e261Ted Kremenek/// middle" extension is a BinaryConditionalOperator. 28581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumpclass ConditionalOperator : public AbstractConditionalOperator { 2859ba7bc5584b8d46f4e8deb3a9d363256908fa86eaTed Kremenek enum { COND, LHS, RHS, END_EXPR }; 28601eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Stmt* SubExprs[END_EXPR]; // Left/Middle/Right hand sides. 28611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2862c5ae899b4bbf65488445316c63168079177db0edSteve Naroff friend class ASTStmtReader; 28634c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregorpublic: 286466b5a8a39088598c01a9fa6f032dc908612dc8ecAnders Carlsson ConditionalOperator(Expr *cond, SourceLocation QLoc, Expr *lhs, 28651eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SourceLocation CLoc, Expr *rhs, 28661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump QualType t, ExprValueKind VK, ExprObjectKind OK) 2867c5ae899b4bbf65488445316c63168079177db0edSteve Naroff : AbstractConditionalOperator(ConditionalOperatorClass, t, VK, OK, 28684c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // FIXME: the type of the conditional operator doesn't 286966b5a8a39088598c01a9fa6f032dc908612dc8ecAnders Carlsson // depend on the type of the conditional, but the standard 28701eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // seems to imply that it could. File a bug! 28711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump (lhs->isTypeDependent() || rhs->isTypeDependent()), 2872c5ae899b4bbf65488445316c63168079177db0edSteve Naroff (cond->isValueDependent() || lhs->isValueDependent() || 28739e8925e72f53a9e2c4633b6b48e965ed01702fe4Steve Naroff rhs->isValueDependent()), 28749e8925e72f53a9e2c4633b6b48e965ed01702fe4Steve Naroff (cond->isInstantiationDependent() || 2875c5ae899b4bbf65488445316c63168079177db0edSteve Naroff lhs->isInstantiationDependent() || 2876fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor rhs->isInstantiationDependent()), 2877709210feee317b8d6690dd1d15c2b74cfe55e261Ted Kremenek (cond->containsUnexpandedParameterPack() || 28781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump lhs->containsUnexpandedParameterPack() || 28794c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor rhs->containsUnexpandedParameterPack()), 28804c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor QLoc, CLoc) { 28814c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor SubExprs[COND] = cond; 28824c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor SubExprs[LHS] = lhs; 28834c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor SubExprs[RHS] = rhs; 28844c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor } 28854c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 28864c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor /// \brief Build an empty conditional operator. 28874c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor explicit ConditionalOperator(EmptyShell Empty) 28884c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor : AbstractConditionalOperator(ConditionalOperatorClass, Empty) { } 28894c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 28904c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // getCond - Return the expression representing the condition for 28914c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // the ?: operator. 28924c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor Expr *getCond() const { return cast<Expr>(SubExprs[COND]); } 28934c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 2894709210feee317b8d6690dd1d15c2b74cfe55e261Ted Kremenek // getTrueExpr - Return the subexpression representing the value of 2895c5ae899b4bbf65488445316c63168079177db0edSteve Naroff // the expression if the condition evaluates to true. 28960bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor Expr *getTrueExpr() const { return cast<Expr>(SubExprs[LHS]); } 28970bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor 28980bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor // getFalseExpr - Return the subexpression representing the value of 28990bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor // the expression if the condition evaluates to false. This is 29000bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor // the same as getRHS. 29010bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor Expr *getFalseExpr() const { return cast<Expr>(SubExprs[RHS]); } 29020bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor 29030bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor Expr *getLHS() const { return cast<Expr>(SubExprs[LHS]); } 29040bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor Expr *getRHS() const { return cast<Expr>(SubExprs[RHS]); } 2905c5ae899b4bbf65488445316c63168079177db0edSteve Naroff 2906c5ae899b4bbf65488445316c63168079177db0edSteve Naroff SourceRange getSourceRange() const { 2907b3eef68111ffc220e449be96da1747998c057790Douglas Gregor return SourceRange(getCond()->getLocStart(), getRHS()->getLocEnd()); 2908b3eef68111ffc220e449be96da1747998c057790Douglas Gregor } 2909b3eef68111ffc220e449be96da1747998c057790Douglas Gregor static bool classof(const Stmt *T) { 29101eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return T->getStmtClass() == ConditionalOperatorClass; 2911d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor } 2912d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor static bool classof(const ConditionalOperator *) { return true; } 2913d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor 291487fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor // Iterators 291587fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor child_range children() { 29164c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor return child_range(&SubExprs[0], &SubExprs[0]+END_EXPR); 29174c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor } 29184c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor}; 29191eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 29204c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// BinaryConditionalOperator - The GNU extension to the conditional 29214c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// operator which allows the middle operand to be omitted. 29224c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// 2923a9c878086036de36482cc21e35a33cabe9699b0aDouglas Gregor/// This is a different expression kind on the assumption that almost 29241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// every client ends up needing to know that these are different. 2925d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregorclass BinaryConditionalOperator : public AbstractConditionalOperator { 2926a9c878086036de36482cc21e35a33cabe9699b0aDouglas Gregor enum { COMMON, COND, LHS, RHS, NUM_SUBEXPRS }; 2927a9c878086036de36482cc21e35a33cabe9699b0aDouglas Gregor 292866b5a8a39088598c01a9fa6f032dc908612dc8ecAnders Carlsson /// - the common condition/left-hand-side expression, which will be 292966b5a8a39088598c01a9fa6f032dc908612dc8ecAnders Carlsson /// evaluated as the opaque value 29301eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// - the condition, expressed in terms of the opaque value 293166b5a8a39088598c01a9fa6f032dc908612dc8ecAnders Carlsson /// - the left-hand-side, expressed in terms of the opaque value 29321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// - the right-hand-side 293366b5a8a39088598c01a9fa6f032dc908612dc8ecAnders Carlsson Stmt *SubExprs[NUM_SUBEXPRS]; 293466b5a8a39088598c01a9fa6f032dc908612dc8ecAnders Carlsson OpaqueValueExpr *OpaqueValue; 29351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 293666b5a8a39088598c01a9fa6f032dc908612dc8ecAnders Carlsson friend class ASTStmtReader; 293766b5a8a39088598c01a9fa6f032dc908612dc8ecAnders Carlssonpublic: 293866b5a8a39088598c01a9fa6f032dc908612dc8ecAnders Carlsson BinaryConditionalOperator(Expr *common, OpaqueValueExpr *opaqueValue, 29391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Expr *cond, Expr *lhs, Expr *rhs, 2940709210feee317b8d6690dd1d15c2b74cfe55e261Ted Kremenek SourceLocation qloc, SourceLocation cloc, 29418111a6150cb68a238d55a31f9f4f90869a43f988Zhongxing Xu QualType t, ExprValueKind VK, ExprObjectKind OK) 2942709210feee317b8d6690dd1d15c2b74cfe55e261Ted Kremenek : AbstractConditionalOperator(BinaryConditionalOperatorClass, t, VK, OK, 29438111a6150cb68a238d55a31f9f4f90869a43f988Zhongxing Xu (common->isTypeDependent() || rhs->isTypeDependent()), 29441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump (common->isValueDependent() || rhs->isValueDependent()), 2945ba7bc5584b8d46f4e8deb3a9d363256908fa86eaTed Kremenek (common->isInstantiationDependent() || 29468111a6150cb68a238d55a31f9f4f90869a43f988Zhongxing Xu rhs->isInstantiationDependent()), 2947ba7bc5584b8d46f4e8deb3a9d363256908fa86eaTed Kremenek (common->containsUnexpandedParameterPack() || 29488111a6150cb68a238d55a31f9f4f90869a43f988Zhongxing Xu rhs->containsUnexpandedParameterPack()), 2949ba7bc5584b8d46f4e8deb3a9d363256908fa86eaTed Kremenek qloc, cloc), 29508111a6150cb68a238d55a31f9f4f90869a43f988Zhongxing Xu OpaqueValue(opaqueValue) { 2951ba7bc5584b8d46f4e8deb3a9d363256908fa86eaTed Kremenek SubExprs[COMMON] = common; 29528111a6150cb68a238d55a31f9f4f90869a43f988Zhongxing Xu SubExprs[COND] = cond; 295366b5a8a39088598c01a9fa6f032dc908612dc8ecAnders Carlsson SubExprs[LHS] = lhs; 295466b5a8a39088598c01a9fa6f032dc908612dc8ecAnders Carlsson SubExprs[RHS] = rhs; 295505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 295605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor OpaqueValue->setSourceExpr(common); 295705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 295805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 295905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor /// \brief Build an empty conditional operator. 296005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor explicit BinaryConditionalOperator(EmptyShell Empty) 296105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor : AbstractConditionalOperator(BinaryConditionalOperatorClass, Empty) { } 29621eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 296305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor /// \brief getCommon - Return the common expression, written to the 296405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor /// left of the condition. The opaque value will be bound to the 296505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor /// result of this expression. 296605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Expr *getCommon() const { return cast<Expr>(SubExprs[COMMON]); } 296705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 296805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor /// \brief getOpaqueValue - Return the opaque value placeholder. 296905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor OpaqueValueExpr *getOpaqueValue() const { return OpaqueValue; } 297005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 297105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor /// \brief getCond - Return the condition expression; this is defined 297205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor /// in terms of the opaque value. 297305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Expr *getCond() const { return cast<Expr>(SubExprs[COND]); } 297405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 297505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor /// \brief getTrueExpr - Return the subexpression which will be 2976ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor /// evaluated if the condition evaluates to true; this is defined 2977ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor /// in terms of the opaque value. 2978ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor Expr *getTrueExpr() const { 2979ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor return cast<Expr>(SubExprs[LHS]); 2980ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor } 298105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 298205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor /// \brief getFalseExpr - Return the subexpression which will be 298305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor /// evaluated if the condnition evaluates to false; this is 298405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor /// defined in terms of the opaque value. 2985eeae8f072748affce25ab4064982626361293390Douglas Gregor Expr *getFalseExpr() const { 298605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor return cast<Expr>(SubExprs[RHS]); 2987eeae8f072748affce25ab4064982626361293390Douglas Gregor } 298805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 298905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor SourceRange getSourceRange() const { 299005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor return SourceRange(getCommon()->getLocStart(), getFalseExpr()->getLocEnd()); 299105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 2992ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor static bool classof(const Stmt *T) { 2993ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor return T->getStmtClass() == BinaryConditionalOperatorClass; 2994ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor } 2995ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor static bool classof(const BinaryConditionalOperator *) { return true; } 299605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 299705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // Iterators 299805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor child_range children() { 299905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor return child_range(SubExprs, SubExprs + NUM_SUBEXPRS); 300005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 3001ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor}; 3002319d57f21600dd2c4d52ccc27bd12ce260b174e7Douglas Gregor 3003ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregorinline Expr *AbstractConditionalOperator::getCond() const { 3004eeae8f072748affce25ab4064982626361293390Douglas Gregor if (const ConditionalOperator *co = dyn_cast<ConditionalOperator>(this)) 30059ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor return co->getCond(); 30069ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor return cast<BinaryConditionalOperator>(this)->getCond(); 300705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor} 3008d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor 3009d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregorinline Expr *AbstractConditionalOperator::getTrueExpr() const { 3010d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor if (const ConditionalOperator *co = dyn_cast<ConditionalOperator>(this)) 3011d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor return co->getTrueExpr(); 301205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor return cast<BinaryConditionalOperator>(this)->getTrueExpr(); 301305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor} 301405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 301505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregorinline Expr *AbstractConditionalOperator::getFalseExpr() const { 301605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor if (const ConditionalOperator *co = dyn_cast<ConditionalOperator>(this)) 301705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor return co->getFalseExpr(); 301805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor return cast<BinaryConditionalOperator>(this)->getFalseExpr(); 301905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor} 302005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 302105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// AddrLabelExpr - The GNU address of label extension, representing &&label. 30221eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumpclass AddrLabelExpr : public Expr { 302305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor SourceLocation AmpAmpLoc, LabelLoc; 302405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor LabelDecl *Label; 30251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumppublic: 302605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor AddrLabelExpr(SourceLocation AALoc, SourceLocation LLoc, LabelDecl *L, 302705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor QualType t) 302805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor : Expr(AddrLabelExprClass, t, VK_RValue, OK_Ordinary, false, false, false, 302905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor false), 303005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor AmpAmpLoc(AALoc), LabelLoc(LLoc), Label(L) {} 303105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 303205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor /// \brief Build an empty address of a label expression. 303305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor explicit AddrLabelExpr(EmptyShell Empty) 303405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor : Expr(AddrLabelExprClass, Empty) { } 303505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 303605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor SourceLocation getAmpAmpLoc() const { return AmpAmpLoc; } 303705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor void setAmpAmpLoc(SourceLocation L) { AmpAmpLoc = L; } 303805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor SourceLocation getLabelLoc() const { return LabelLoc; } 303905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor void setLabelLoc(SourceLocation L) { LabelLoc = L; } 304005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 30411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SourceRange getSourceRange() const { 304205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor return SourceRange(AmpAmpLoc, LabelLoc); 304305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 304405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 304505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor LabelDecl *getLabel() const { return Label; } 304605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor void setLabel(LabelDecl *L) { Label = L; } 304705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 304805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor static bool classof(const Stmt *T) { 304905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor return T->getStmtClass() == AddrLabelExprClass; 305005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 305105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor static bool classof(const AddrLabelExpr *) { return true; } 305205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 305305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // Iterators 305405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor child_range children() { return child_range(); } 305505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor}; 305605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 305705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// StmtExpr - This is the GNU Statement Expression extension: ({int X=4; X;}). 305805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// The StmtExpr contains a single CompoundStmt node, which it evaluates and 305905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// takes the value of the last subexpression. 306005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// 306105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// A StmtExpr is always an r-value; values "returned" out of a 306205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// StmtExpr will be copied. 306305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregorclass StmtExpr : public Expr { 306405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Stmt *SubStmt; 306505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor SourceLocation LParenLoc, RParenLoc; 306605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregorpublic: 3067ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // FIXME: Does type-dependence need to be computed differently? 3068ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // FIXME: Do we need to compute instantiation instantiation-dependence for 306905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // statements? (ugh!) 30701eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump StmtExpr(CompoundStmt *substmt, QualType T, 30711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SourceLocation lp, SourceLocation rp) : 307205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Expr(StmtExprClass, T, VK_RValue, OK_Ordinary, 307305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor T->isDependentType(), false, false, false), 307405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor SubStmt(substmt), LParenLoc(lp), RParenLoc(rp) { } 307505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 307605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor /// \brief Build an empty statement expression. 307705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor explicit StmtExpr(EmptyShell Empty) : Expr(StmtExprClass, Empty) { } 307805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 30791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump CompoundStmt *getSubStmt() { return cast<CompoundStmt>(SubStmt); } 308005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor const CompoundStmt *getSubStmt() const { return cast<CompoundStmt>(SubStmt); } 308105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor void setSubStmt(CompoundStmt *S) { SubStmt = S; } 308205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 308305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor SourceRange getSourceRange() const { 308405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor return SourceRange(LParenLoc, RParenLoc); 308505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 308605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 308705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor SourceLocation getLParenLoc() const { return LParenLoc; } 308805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor void setLParenLoc(SourceLocation L) { LParenLoc = L; } 30891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SourceLocation getRParenLoc() const { return RParenLoc; } 309005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor void setRParenLoc(SourceLocation L) { RParenLoc = L; } 309105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 309205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor static bool classof(const Stmt *T) { 309305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor return T->getStmtClass() == StmtExprClass; 309405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 309505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor static bool classof(const StmtExpr *) { return true; } 309605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 309705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // Iterators 309805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor child_range children() { return child_range(&SubStmt, &SubStmt+1); } 309905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor}; 310005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 310105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 310205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// ShuffleVectorExpr - clang-specific builtin-in function 310305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// __builtin_shufflevector. 310405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// This AST node represents a operator that does a constant 310505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// shuffle, similar to LLVM's shufflevector instruction. It takes 310605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// two vectors and a variable number of constant indices, 310705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// and returns the appropriately shuffled vector. 310805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregorclass ShuffleVectorExpr : public Expr { 310905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor SourceLocation BuiltinLoc, RParenLoc; 311005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 311105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // SubExprs - the list of values passed to the __builtin_shufflevector 311205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // function. The first two are vectors, and the rest are constant 311305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // indices. The number of values in this list is always 311405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // 2+the number of indices in the vector type. 311505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Stmt **SubExprs; 311605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor unsigned NumExprs; 311787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor 311887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregorpublic: 311987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor ShuffleVectorExpr(ASTContext &C, Expr **args, unsigned nexpr, 312087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor QualType Type, SourceLocation BLoc, 312187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor SourceLocation RP); 312205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 312305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor /// \brief Build an empty vector-shuffle expression. 312405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor explicit ShuffleVectorExpr(EmptyShell Empty) 312505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor : Expr(ShuffleVectorExprClass, Empty), SubExprs(0) { } 312605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 312705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor SourceLocation getBuiltinLoc() const { return BuiltinLoc; } 312805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor void setBuiltinLoc(SourceLocation L) { BuiltinLoc = L; } 312905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 313005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor SourceLocation getRParenLoc() const { return RParenLoc; } 313105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor void setRParenLoc(SourceLocation L) { RParenLoc = L; } 313205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 313305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor SourceRange getSourceRange() const { 313405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor return SourceRange(BuiltinLoc, RParenLoc); 313505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 313605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor static bool classof(const Stmt *T) { 313705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor return T->getStmtClass() == ShuffleVectorExprClass; 313805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 313905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor static bool classof(const ShuffleVectorExpr *) { return true; } 314005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 314105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor /// getNumSubExprs - Return the size of the SubExprs array. This includes the 314205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor /// constant expression, the actual arguments passed in, and the function 314305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor /// pointers. 31444c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned getNumSubExprs() const { return NumExprs; } 3145d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor 3146d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor /// \brief Retrieve the array of expressions. 3147d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor Expr **getSubExprs() { return reinterpret_cast<Expr **>(SubExprs); } 3148d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor 3149d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor /// getExpr - Return the Expr at the specified index. 3150d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor Expr *getExpr(unsigned Index) { 31514c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor assert((Index < NumExprs) && "Arg access out of range!"); 31524c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor return cast<Expr>(SubExprs[Index]); 31534c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor } 31544c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor const Expr *getExpr(unsigned Index) const { 31554c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor assert((Index < NumExprs) && "Arg access out of range!"); 31564c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor return cast<Expr>(SubExprs[Index]); 315705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 315805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 31591eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump void setExprs(ASTContext &C, Expr ** Exprs, unsigned NumExprs); 316005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 316105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor unsigned getShuffleMaskIdx(ASTContext &Ctx, unsigned N) { 316205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor assert((N < NumExprs - 2) && "Shuffle idx out of range!"); 3163eeae8f072748affce25ab4064982626361293390Douglas Gregor return getExpr(N+2)->EvaluateAsInt(Ctx).getZExtValue(); 316405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 3165d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor 3166d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor // Iterators 316705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor child_range children() { 316805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor return child_range(&SubExprs[0], &SubExprs[0]+NumExprs); 316905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 317005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor}; 317105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 3172ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor/// ChooseExpr - GNU builtin-in function __builtin_choose_expr. 31731eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// This AST node is similar to the conditional operator (?:) in C, with 31741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// the following exceptions: 3175ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor/// - the test expression must be a integer constant expression. 317605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// - the expression returned acts like the chosen subexpression in every 3177711997184366d584c9c437102cae1e9d9927b986Douglas Gregor/// visible way: the type is the same as that of the chosen subexpression, 3178711997184366d584c9c437102cae1e9d9927b986Douglas Gregor/// and all predicates (whether it's an l-value, whether it's an integer 3179c302113179a1c2b1254224ea9b6f5316ceeb375cSean Hunt/// constant expression, etc.) return the same result as for the chosen 3180319d57f21600dd2c4d52ccc27bd12ce260b174e7Douglas Gregor/// sub-expression. 3181d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregorclass ChooseExpr : public Expr { 318205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor enum { COND, LHS, RHS, END_EXPR }; 318305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Stmt* SubExprs[END_EXPR]; // Left/Middle/Right hand sides. 318405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor SourceLocation BuiltinLoc, RParenLoc; 318505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregorpublic: 318605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor ChooseExpr(SourceLocation BLoc, Expr *cond, Expr *lhs, Expr *rhs, 318705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor QualType t, ExprValueKind VK, ExprObjectKind OK, 318805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor SourceLocation RP, bool TypeDependent, bool ValueDependent) 3189d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor : Expr(ChooseExprClass, t, VK, OK, TypeDependent, ValueDependent, 319005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor (cond->isInstantiationDependent() || 319105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor lhs->isInstantiationDependent() || 3192eeae8f072748affce25ab4064982626361293390Douglas Gregor rhs->isInstantiationDependent()), 3193eeae8f072748affce25ab4064982626361293390Douglas Gregor (cond->containsUnexpandedParameterPack() || 3194d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor lhs->containsUnexpandedParameterPack() || 319505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor rhs->containsUnexpandedParameterPack())), 319605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor BuiltinLoc(BLoc), RParenLoc(RP) { 31971eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SubExprs[COND] = cond; 319805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor SubExprs[LHS] = lhs; 319905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor SubExprs[RHS] = rhs; 320005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 320105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 320205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor /// \brief Build an empty __builtin_choose_expr. 320305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor explicit ChooseExpr(EmptyShell Empty) : Expr(ChooseExprClass, Empty) { } 320405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 3205d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor /// isConditionTrue - Return whether the condition is true (i.e. not 3206d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor /// equal to zero). 3207d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor bool isConditionTrue(const ASTContext &C) const; 3208d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor 3209d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor /// getChosenSubExpr - Return the subexpression chosen according to the 3210d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor /// condition. 3211d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor Expr *getChosenSubExpr(const ASTContext &C) const { 3212d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor return isConditionTrue(C) ? getLHS() : getRHS(); 3213d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor } 3214d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor 3215d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor Expr *getCond() const { return cast<Expr>(SubExprs[COND]); } 3216d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor void setCond(Expr *E) { SubExprs[COND] = E; } 3217d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor Expr *getLHS() const { return cast<Expr>(SubExprs[LHS]); } 3218d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor void setLHS(Expr *E) { SubExprs[LHS] = E; } 3219d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor Expr *getRHS() const { return cast<Expr>(SubExprs[RHS]); } 3220d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor void setRHS(Expr *E) { SubExprs[RHS] = E; } 3221d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor 3222d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor SourceLocation getBuiltinLoc() const { return BuiltinLoc; } 3223d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor void setBuiltinLoc(SourceLocation L) { BuiltinLoc = L; } 3224d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor 3225ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor SourceLocation getRParenLoc() const { return RParenLoc; } 3226ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor void setRParenLoc(SourceLocation L) { RParenLoc = L; } 3227319d57f21600dd2c4d52ccc27bd12ce260b174e7Douglas Gregor 3228ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor SourceRange getSourceRange() const { 3229ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor return SourceRange(BuiltinLoc, RParenLoc); 323005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 323105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor static bool classof(const Stmt *T) { 323205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor return T->getStmtClass() == ChooseExprClass; 32331eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 323405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor static bool classof(const ChooseExpr *) { return true; } 323505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 323605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // Iterators 323705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor child_range children() { 323805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor return child_range(&SubExprs[0], &SubExprs[0]+END_EXPR); 32391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 32403498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor}; 32413498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor 32423498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor/// GNUNullExpr - Implements the GNU __null extension, which is a name 32433498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor/// for a null pointer constant that has integral type (e.g., int or 32443498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor/// long) and is the same size and alignment as a pointer. The __null 32451a51b4a11b7db25cac2134249711ecaaf9d1c0a8Douglas Gregor/// extension is typically only used by system headers, which define 32461a51b4a11b7db25cac2134249711ecaaf9d1c0a8Douglas Gregor/// NULL as __null in C++ rather than using 0 (which is an integer 32473498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor/// that may not match the size of a pointer). 32481a51b4a11b7db25cac2134249711ecaaf9d1c0a8Douglas Gregorclass GNUNullExpr : public Expr { 32491a51b4a11b7db25cac2134249711ecaaf9d1c0a8Douglas Gregor /// TokenLoc - The location of the __null keyword. 32501eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SourceLocation TokenLoc; 32513498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor 32521eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumppublic: 32532333f7727f97018d6742e1e0938133bcfad967abEli Friedman GNUNullExpr(QualType Ty, SourceLocation Loc) 32543498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor : Expr(GNUNullExprClass, Ty, VK_RValue, OK_Ordinary, false, false, false, 3255d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor false), 3256d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor TokenLoc(Loc) { } 3257d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor 3258d077d759d0c7fceee98f4e77b6423a3f11cfc849Douglas Gregor /// \brief Build an empty GNU __null expression. 32591eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump explicit GNUNullExpr(EmptyShell Empty) : Expr(GNUNullExprClass, Empty) { } 32603498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor 32613498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor /// getTokenLocation - The location of the __null token. 32623498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor SourceLocation getTokenLocation() const { return TokenLoc; } 32633498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor void setTokenLocation(SourceLocation L) { TokenLoc = L; } 32643498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor 32653498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor SourceRange getSourceRange() const { 32663498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor return SourceRange(TokenLoc); 32673498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor } 32683498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor static bool classof(const Stmt *T) { 32693498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor return T->getStmtClass() == GNUNullExprClass; 32701eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 327105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor static bool classof(const GNUNullExpr *) { return true; } 327205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 32732ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman // Iterators 32742ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman child_range children() { return child_range(); } 32752ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman}; 32762ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman 32772ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman/// VAArgExpr, used for the builtin function __builtin_va_arg. 32782ef13e5abef0570a9f567b4671367275c05d4d34Nate Begemanclass VAArgExpr : public Expr { 32792ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman Stmt *Val; 32801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump TypeSourceInfo *TInfo; 32812ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman SourceLocation BuiltinLoc, RParenLoc; 32822ef13e5abef0570a9f567b4671367275c05d4d34Nate Begemanpublic: 32832ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman VAArgExpr(SourceLocation BLoc, Expr* e, TypeSourceInfo *TInfo, 328437bdfe284ad365f753741d1d89c078c148b3f4afArgyrios Kyrtzidis SourceLocation RPLoc, QualType t) 32851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump : Expr(VAArgExprClass, t, VK_RValue, OK_Ordinary, 32862ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman t->isDependentType(), false, 32871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump (TInfo->getType()->isInstantiationDependentType() || 32881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump e->isInstantiationDependent()), 32892ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman (TInfo->getType()->containsUnexpandedParameterPack() || 32902ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman e->containsUnexpandedParameterPack())), 32912ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman Val(e), TInfo(TInfo), 32921eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump BuiltinLoc(BLoc), 32931eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump RParenLoc(RPLoc) { } 32942ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman 32952ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman /// \brief Create an empty __builtin_va_arg expression. 32962ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman explicit VAArgExpr(EmptyShell Empty) : Expr(VAArgExprClass, Empty) { } 32972ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman 329883ddad3ab513f5d73698cf9fbeb4ed3f011bc3b9Douglas Gregor const Expr *getSubExpr() const { return cast<Expr>(Val); } 32991eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Expr *getSubExpr() { return cast<Expr>(Val); } 33002ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman void setSubExpr(Expr *E) { Val = E; } 33012ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman 33022ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman TypeSourceInfo *getWrittenTypeInfo() const { return TInfo; } 33032ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman void setWrittenTypeInfo(TypeSourceInfo *TI) { TInfo = TI; } 33042ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman 33051eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SourceLocation getBuiltinLoc() const { return BuiltinLoc; } 33062ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman void setBuiltinLoc(SourceLocation L) { BuiltinLoc = L; } 33071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 33082ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman SourceLocation getRParenLoc() const { return RParenLoc; } 33092ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman void setRParenLoc(SourceLocation L) { RParenLoc = L; } 33101eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 33112ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman SourceRange getSourceRange() const { 33122ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman return SourceRange(BuiltinLoc, RParenLoc); 33132ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman } 331437bdfe284ad365f753741d1d89c078c148b3f4afArgyrios Kyrtzidis static bool classof(const Stmt *T) { 331560adf4acf40b72227740bf966fb87eebddff3f37Sebastian Redl return T->getStmtClass() == VAArgExprClass; 33163397c5570369f19b2d6c52e898f708d75ceede1fSebastian Redl } 33172ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman static bool classof(const VAArgExpr *) { return true; } 33182ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman 33191eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Iterators 33204eb206bebcdab28ababe8df55c6185cec2cdc071Steve Naroff child_range children() { return child_range(&Val, &Val+1); } 33214eb206bebcdab28ababe8df55c6185cec2cdc071Steve Naroff}; 33224eb206bebcdab28ababe8df55c6185cec2cdc071Steve Naroff 33234eb206bebcdab28ababe8df55c6185cec2cdc071Steve Naroff/// @brief Describes an C or C++ initializer list. 3324a09f585a7fdbb01b4bf9de3679fd37005379ca66Chris Lattner/// 3325a09f585a7fdbb01b4bf9de3679fd37005379ca66Chris Lattner/// InitListExpr describes an initializer list, which can be used to 3326a09f585a7fdbb01b4bf9de3679fd37005379ca66Chris Lattner/// initialize objects of different types, including 3327a09f585a7fdbb01b4bf9de3679fd37005379ca66Chris Lattner/// struct/class/union types, arrays, and vectors. For example: 3328a09f585a7fdbb01b4bf9de3679fd37005379ca66Chris Lattner/// 332973525de7fd9bdd534382dc89a24f1f76db3e04b9Chris Lattner/// @code 333073525de7fd9bdd534382dc89a24f1f76db3e04b9Chris Lattner/// struct foo x = { 1, { 2, 3 } }; 333173525de7fd9bdd534382dc89a24f1f76db3e04b9Chris Lattner/// @endcode 3332a09f585a7fdbb01b4bf9de3679fd37005379ca66Chris Lattner/// 3333a09f585a7fdbb01b4bf9de3679fd37005379ca66Chris Lattner/// Prior to semantic analysis, an initializer list will represent the 3334d3c98a02c73417689deaaa6671ea6df7f2a8a73cDouglas Gregor/// initializer list as written by the user, but will have the 3335a09f585a7fdbb01b4bf9de3679fd37005379ca66Chris Lattner/// placeholder type "void". This initializer list is called the 3336a09f585a7fdbb01b4bf9de3679fd37005379ca66Chris Lattner/// syntactic form of the initializer, and may contain C99 designated 3337a09f585a7fdbb01b4bf9de3679fd37005379ca66Chris Lattner/// initializers (represented as DesignatedInitExprs), initializations 3338a09f585a7fdbb01b4bf9de3679fd37005379ca66Chris Lattner/// of subobject members without explicit braces, and so on. Clients 33392333f7727f97018d6742e1e0938133bcfad967abEli Friedman/// interested in the original syntax of the initializer list should 33402333f7727f97018d6742e1e0938133bcfad967abEli Friedman/// use the syntactic form of the initializer list. 3341d3c98a02c73417689deaaa6671ea6df7f2a8a73cDouglas Gregor/// 33421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// After semantic analysis, the initializer list will represent the 3343d3c98a02c73417689deaaa6671ea6df7f2a8a73cDouglas Gregor/// semantic form of the initializer, where the initializations of all 3344d3c98a02c73417689deaaa6671ea6df7f2a8a73cDouglas Gregor/// subobjects are made explicit with nested InitListExpr nodes and 3345d3c98a02c73417689deaaa6671ea6df7f2a8a73cDouglas Gregor/// C99 designators have been eliminated by placing the designated 3346d3c98a02c73417689deaaa6671ea6df7f2a8a73cDouglas Gregor/// initializations into the subobject they initialize. Additionally, 3347a09f585a7fdbb01b4bf9de3679fd37005379ca66Chris Lattner/// any "holes" in the initialization, where no initializer has been 3348a09f585a7fdbb01b4bf9de3679fd37005379ca66Chris Lattner/// specified for a particular subobject, will be replaced with 3349d3c98a02c73417689deaaa6671ea6df7f2a8a73cDouglas Gregor/// implicitly-generated ImplicitValueInitExpr expressions that 3350d3c98a02c73417689deaaa6671ea6df7f2a8a73cDouglas Gregor/// value-initialize the subobjects. Note, however, that the 3351d3c98a02c73417689deaaa6671ea6df7f2a8a73cDouglas Gregor/// initializer lists may still have fewer initializers than there are 3352d3c98a02c73417689deaaa6671ea6df7f2a8a73cDouglas Gregor/// elements to initialize within the object. 3353d3c98a02c73417689deaaa6671ea6df7f2a8a73cDouglas Gregor/// 3354d3c98a02c73417689deaaa6671ea6df7f2a8a73cDouglas Gregor/// Given the semantic form of the initializer list, one can retrieve 3355d3c98a02c73417689deaaa6671ea6df7f2a8a73cDouglas Gregor/// the original syntactic form of that initializer list (if it 3356d3c98a02c73417689deaaa6671ea6df7f2a8a73cDouglas Gregor/// exists) using getSyntacticForm(). Since many initializer lists 3357a09f585a7fdbb01b4bf9de3679fd37005379ca66Chris Lattner/// have the same syntactic and semantic forms, getSyntacticForm() may 3358a09f585a7fdbb01b4bf9de3679fd37005379ca66Chris Lattner/// return NULL, indicating that the current initializer list also 33591eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// serves as its syntactic form. 3360a09f585a7fdbb01b4bf9de3679fd37005379ca66Chris Lattnerclass InitListExpr : public Expr { 3361a09f585a7fdbb01b4bf9de3679fd37005379ca66Chris Lattner // FIXME: Eliminate this vector in favor of ASTContext allocation 3362a09f585a7fdbb01b4bf9de3679fd37005379ca66Chris Lattner typedef ASTVector<Stmt *> InitExprsTy; 33631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump InitExprsTy InitExprs; 3364a09f585a7fdbb01b4bf9de3679fd37005379ca66Chris Lattner SourceLocation LBraceLoc, RBraceLoc; 3365a09f585a7fdbb01b4bf9de3679fd37005379ca66Chris Lattner 3366a09f585a7fdbb01b4bf9de3679fd37005379ca66Chris Lattner /// Contains the initializer list that describes the syntactic form 33671eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// written in the source code. 3368a09f585a7fdbb01b4bf9de3679fd37005379ca66Chris Lattner InitListExpr *SyntacticForm; 3369a09f585a7fdbb01b4bf9de3679fd37005379ca66Chris Lattner 3370a09f585a7fdbb01b4bf9de3679fd37005379ca66Chris Lattner /// \brief Either: 33711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// If this initializer list initializes an array with more elements than 33722140e904dbe53657339cb5b1cc13de563ca0d1fcChris Lattner /// there are initializers in the list, specifies an expression to be used 33732140e904dbe53657339cb5b1cc13de563ca0d1fcChris Lattner /// for value initialization of the rest of the elements. 33742140e904dbe53657339cb5b1cc13de563ca0d1fcChris Lattner /// Or 33751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// If this initializer list initializes a union, specifies which 33761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// field within the union will be initialized. 33771eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::PointerUnion<Expr *, FieldDecl *> ArrayFillerOrUnionFieldInit; 3378a09f585a7fdbb01b4bf9de3679fd37005379ca66Chris Lattner 3379a09f585a7fdbb01b4bf9de3679fd37005379ca66Chris Lattner /// Whether this initializer list originally had a GNU array-range 33801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// designator in it. This is a temporary marker used by CodeGen. 3381a09f585a7fdbb01b4bf9de3679fd37005379ca66Chris Lattner bool HadArrayRangeDesignator; 3382a09f585a7fdbb01b4bf9de3679fd37005379ca66Chris Lattner 3383a09f585a7fdbb01b4bf9de3679fd37005379ca66Chris Lattnerpublic: 3384a09f585a7fdbb01b4bf9de3679fd37005379ca66Chris Lattner InitListExpr(ASTContext &C, SourceLocation lbraceloc, 3385a09f585a7fdbb01b4bf9de3679fd37005379ca66Chris Lattner Expr **initexprs, unsigned numinits, 3386a09f585a7fdbb01b4bf9de3679fd37005379ca66Chris Lattner SourceLocation rbraceloc); 338756ee6896f2efebffb4a2cce5a7610cdf1eddbbbeSteve Naroff 33889c3c902835ef7d37300463ad47176ec21a67dc8bSteve Naroff /// \brief Build an empty initializer list. 33894eb206bebcdab28ababe8df55c6185cec2cdc071Steve Naroff explicit InitListExpr(ASTContext &C, EmptyShell Empty) 339056ee6896f2efebffb4a2cce5a7610cdf1eddbbbeSteve Naroff : Expr(InitListExprClass, Empty), InitExprs(C) { } 339156ee6896f2efebffb4a2cce5a7610cdf1eddbbbeSteve Naroff 3392b83d287bc7f47d36fb0751a481e2ef9308b37252Mike Stump unsigned getNumInits() const { return InitExprs.size(); } 33934eb206bebcdab28ababe8df55c6185cec2cdc071Steve Naroff 3394b83d287bc7f47d36fb0751a481e2ef9308b37252Mike Stump /// \brief Retrieve the set of initializers. 33952333f7727f97018d6742e1e0938133bcfad967abEli Friedman Expr **getInits() { return reinterpret_cast<Expr **>(InitExprs.data()); } 3396b83d287bc7f47d36fb0751a481e2ef9308b37252Mike Stump 33979c3c902835ef7d37300463ad47176ec21a67dc8bSteve Naroff const Expr *getInit(unsigned Init) const { 339884af7c27cdc615ff917a501d61256b4049383c97Douglas Gregor assert(Init < getNumInits() && "Initializer access out of range!"); 339984af7c27cdc615ff917a501d61256b4049383c97Douglas Gregor return cast_or_null<Expr>(InitExprs[Init]); 340084af7c27cdc615ff917a501d61256b4049383c97Douglas Gregor } 3401d5cab5435371b8cc74a9e05ebd40b5995ebad149Anders Carlsson 340256ee6896f2efebffb4a2cce5a7610cdf1eddbbbeSteve Naroff Expr *getInit(unsigned Init) { 340384af7c27cdc615ff917a501d61256b4049383c97Douglas Gregor assert(Init < getNumInits() && "Initializer access out of range!"); 340484af7c27cdc615ff917a501d61256b4049383c97Douglas Gregor return cast_or_null<Expr>(InitExprs[Init]); 340556ee6896f2efebffb4a2cce5a7610cdf1eddbbbeSteve Naroff } 340656ee6896f2efebffb4a2cce5a7610cdf1eddbbbeSteve Naroff 340756ee6896f2efebffb4a2cce5a7610cdf1eddbbbeSteve Naroff void setInit(unsigned Init, Expr *expr) { 340856ee6896f2efebffb4a2cce5a7610cdf1eddbbbeSteve Naroff assert(Init < getNumInits() && "Initializer access out of range!"); 34099c3c902835ef7d37300463ad47176ec21a67dc8bSteve Naroff InitExprs[Init] = expr; 34109c3c902835ef7d37300463ad47176ec21a67dc8bSteve Naroff } 341156ee6896f2efebffb4a2cce5a7610cdf1eddbbbeSteve Naroff 34129c3c902835ef7d37300463ad47176ec21a67dc8bSteve Naroff /// \brief Reserve space for some number of initializers. 34139c3c902835ef7d37300463ad47176ec21a67dc8bSteve Naroff void reserveInits(ASTContext &C, unsigned NumInits); 341456ee6896f2efebffb4a2cce5a7610cdf1eddbbbeSteve Naroff 341556ee6896f2efebffb4a2cce5a7610cdf1eddbbbeSteve Naroff /// @brief Specify the number of initializers 341656ee6896f2efebffb4a2cce5a7610cdf1eddbbbeSteve Naroff /// 3417b83d287bc7f47d36fb0751a481e2ef9308b37252Mike Stump /// If there are more than @p NumInits initializers, the remaining 34185b54b88c4082bb81b8b341b622fda9a85cbd5fadChris Lattner /// initializers will be destroyed. If there are fewer than @p 3419b83d287bc7f47d36fb0751a481e2ef9308b37252Mike Stump /// NumInits initializers, NULL expressions will be added for the 342084af7c27cdc615ff917a501d61256b4049383c97Douglas Gregor /// unknown initializers. 3421b83d287bc7f47d36fb0751a481e2ef9308b37252Mike Stump void resizeInits(ASTContext &Context, unsigned NumInits); 34221eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 34239c3c902835ef7d37300463ad47176ec21a67dc8bSteve Naroff /// @brief Updates the initializer at index @p Init with the new 34244eb206bebcdab28ababe8df55c6185cec2cdc071Steve Naroff /// expression @p expr, and returns the old expression at that 34254eb206bebcdab28ababe8df55c6185cec2cdc071Steve Naroff /// location. 34261eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// 34274eb206bebcdab28ababe8df55c6185cec2cdc071Steve Naroff /// When @p Init is out of range for this initializer list, the 34284eb206bebcdab28ababe8df55c6185cec2cdc071Steve Naroff /// initializer list will be extended with NULL expressions to 34294eb206bebcdab28ababe8df55c6185cec2cdc071Steve Naroff /// accommodate the new entry. 34304eb206bebcdab28ababe8df55c6185cec2cdc071Steve Naroff Expr *updateInit(ASTContext &C, unsigned Init, Expr *expr); 34311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 34324eb206bebcdab28ababe8df55c6185cec2cdc071Steve Naroff /// \brief If this initializer list initializes an array with more elements 34334eb206bebcdab28ababe8df55c6185cec2cdc071Steve Naroff /// than there are initializers in the list, specifies an expression to be 34344eb206bebcdab28ababe8df55c6185cec2cdc071Steve Naroff /// used for value initialization of the rest of the elements. 34351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Expr *getArrayFiller() { 34364eb206bebcdab28ababe8df55c6185cec2cdc071Steve Naroff return ArrayFillerOrUnionFieldInit.dyn_cast<Expr *>(); 34377d5c74ecbbd8719436c071f38657bc8e97ee4a24Fariborz Jahanian } 34387d5c74ecbbd8719436c071f38657bc8e97ee4a24Fariborz Jahanian const Expr *getArrayFiller() const { 343989f9d3a7651d1225f3f56ae3387c83b98a26da00Fariborz Jahanian return const_cast<InitListExpr *>(this)->getArrayFiller(); 34404eb206bebcdab28ababe8df55c6185cec2cdc071Steve Naroff } 34412333f7727f97018d6742e1e0938133bcfad967abEli Friedman void setArrayFiller(Expr *filler); 34421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 344389f9d3a7651d1225f3f56ae3387c83b98a26da00Fariborz Jahanian /// \brief If this initializes a union, specifies which field in the 344484ca008a462b515f63871253f494d53c9190363cFariborz Jahanian /// union to initialize. 344584ca008a462b515f63871253f494d53c9190363cFariborz Jahanian /// 344652bc56a296b11b4fc6bf5ddf4ded5262f6484bdbFariborz Jahanian /// Typically, this field is the first named field within the 344789f9d3a7651d1225f3f56ae3387c83b98a26da00Fariborz Jahanian /// union. However, a designated initializer can specify the 344894cd5d1397bb1a8bcd109602aa38dd787b164c22Douglas Gregor /// initialization of a different field within the union. 344994cd5d1397bb1a8bcd109602aa38dd787b164c22Douglas Gregor FieldDecl *getInitializedFieldInUnion() { 345094cd5d1397bb1a8bcd109602aa38dd787b164c22Douglas Gregor return ArrayFillerOrUnionFieldInit.dyn_cast<FieldDecl *>(); 345194cd5d1397bb1a8bcd109602aa38dd787b164c22Douglas Gregor } 345294cd5d1397bb1a8bcd109602aa38dd787b164c22Douglas Gregor const FieldDecl *getInitializedFieldInUnion() const { 34531eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return const_cast<InitListExpr *>(this)->getInitializedFieldInUnion(); 34544eb206bebcdab28ababe8df55c6185cec2cdc071Steve Naroff } 34554eb206bebcdab28ababe8df55c6185cec2cdc071Steve Naroff void setInitializedFieldInUnion(FieldDecl *FD) { 345694cd5d1397bb1a8bcd109602aa38dd787b164c22Douglas Gregor ArrayFillerOrUnionFieldInit = FD; 345794cd5d1397bb1a8bcd109602aa38dd787b164c22Douglas Gregor } 345894cd5d1397bb1a8bcd109602aa38dd787b164c22Douglas Gregor 345994cd5d1397bb1a8bcd109602aa38dd787b164c22Douglas Gregor // Explicit InitListExpr's originate from source code (and have valid source 346094cd5d1397bb1a8bcd109602aa38dd787b164c22Douglas Gregor // locations). Implicit InitListExpr's are created by the semantic analyzer. 34614eb206bebcdab28ababe8df55c6185cec2cdc071Steve Naroff bool isExplicit() { 34621eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return LBraceLoc.isValid() && RBraceLoc.isValid(); 34634eb206bebcdab28ababe8df55c6185cec2cdc071Steve Naroff } 346494cd5d1397bb1a8bcd109602aa38dd787b164c22Douglas Gregor 34651eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SourceLocation getLBraceLoc() const { return LBraceLoc; } 34667d5c74ecbbd8719436c071f38657bc8e97ee4a24Fariborz Jahanian void setLBraceLoc(SourceLocation Loc) { LBraceLoc = Loc; } 34677d5c74ecbbd8719436c071f38657bc8e97ee4a24Fariborz Jahanian SourceLocation getRBraceLoc() const { return RBraceLoc; } 346889f9d3a7651d1225f3f56ae3387c83b98a26da00Fariborz Jahanian void setRBraceLoc(SourceLocation Loc) { RBraceLoc = Loc; } 346989f9d3a7651d1225f3f56ae3387c83b98a26da00Fariborz Jahanian 347089f9d3a7651d1225f3f56ae3387c83b98a26da00Fariborz Jahanian /// @brief Retrieve the initializer list that describes the 347189f9d3a7651d1225f3f56ae3387c83b98a26da00Fariborz Jahanian /// syntactic form of the initializer. 347289f9d3a7651d1225f3f56ae3387c83b98a26da00Fariborz Jahanian /// 347389f9d3a7651d1225f3f56ae3387c83b98a26da00Fariborz Jahanian /// 347494cd5d1397bb1a8bcd109602aa38dd787b164c22Douglas Gregor InitListExpr *getSyntacticForm() const { return SyntacticForm; } 34751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump void setSyntacticForm(InitListExpr *Init) { SyntacticForm = Init; } 34761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 34774eb206bebcdab28ababe8df55c6185cec2cdc071Steve Naroff bool hadArrayRangeDesignator() const { return HadArrayRangeDesignator; } 34784eb206bebcdab28ababe8df55c6185cec2cdc071Steve Naroff void sawArrayRangeDesignator(bool ARD = true) { 34791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump HadArrayRangeDesignator = ARD; 34804eb206bebcdab28ababe8df55c6185cec2cdc071Steve Naroff } 34814eb206bebcdab28ababe8df55c6185cec2cdc071Steve Naroff 34824eb206bebcdab28ababe8df55c6185cec2cdc071Steve Naroff SourceRange getSourceRange() const; 34834eb206bebcdab28ababe8df55c6185cec2cdc071Steve Naroff 34844eb206bebcdab28ababe8df55c6185cec2cdc071Steve Naroff static bool classof(const Stmt *T) { 34855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return T->getStmtClass() == InitListExprClass; 34865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 34875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer static bool classof(const InitListExpr *) { return true; } 3488 3489 // Iterators 3490 child_range children() { 3491 if (InitExprs.empty()) return child_range(); 3492 return child_range(&InitExprs[0], &InitExprs[0] + InitExprs.size()); 3493 } 3494 3495 typedef InitExprsTy::iterator iterator; 3496 typedef InitExprsTy::const_iterator const_iterator; 3497 typedef InitExprsTy::reverse_iterator reverse_iterator; 3498 typedef InitExprsTy::const_reverse_iterator const_reverse_iterator; 3499 3500 iterator begin() { return InitExprs.begin(); } 3501 const_iterator begin() const { return InitExprs.begin(); } 3502 iterator end() { return InitExprs.end(); } 3503 const_iterator end() const { return InitExprs.end(); } 3504 reverse_iterator rbegin() { return InitExprs.rbegin(); } 3505 const_reverse_iterator rbegin() const { return InitExprs.rbegin(); } 3506 reverse_iterator rend() { return InitExprs.rend(); } 3507 const_reverse_iterator rend() const { return InitExprs.rend(); } 3508 3509 friend class ASTStmtReader; 3510 friend class ASTStmtWriter; 3511}; 3512 3513/// @brief Represents a C99 designated initializer expression. 3514/// 3515/// A designated initializer expression (C99 6.7.8) contains one or 3516/// more designators (which can be field designators, array 3517/// designators, or GNU array-range designators) followed by an 3518/// expression that initializes the field or element(s) that the 3519/// designators refer to. For example, given: 3520/// 3521/// @code 3522/// struct point { 3523/// double x; 3524/// double y; 3525/// }; 3526/// struct point ptarray[10] = { [2].y = 1.0, [2].x = 2.0, [0].x = 1.0 }; 3527/// @endcode 3528/// 3529/// The InitListExpr contains three DesignatedInitExprs, the first of 3530/// which covers @c [2].y=1.0. This DesignatedInitExpr will have two 3531/// designators, one array designator for @c [2] followed by one field 3532/// designator for @c .y. The initalization expression will be 1.0. 3533class DesignatedInitExpr : public Expr { 3534public: 3535 /// \brief Forward declaration of the Designator class. 3536 class Designator; 3537 3538private: 3539 /// The location of the '=' or ':' prior to the actual initializer 3540 /// expression. 3541 SourceLocation EqualOrColonLoc; 3542 3543 /// Whether this designated initializer used the GNU deprecated 3544 /// syntax rather than the C99 '=' syntax. 3545 bool GNUSyntax : 1; 3546 3547 /// The number of designators in this initializer expression. 3548 unsigned NumDesignators : 15; 3549 3550 /// \brief The designators in this designated initialization 3551 /// expression. 3552 Designator *Designators; 3553 3554 /// The number of subexpressions of this initializer expression, 3555 /// which contains both the initializer and any additional 3556 /// expressions used by array and array-range designators. 3557 unsigned NumSubExprs : 16; 3558 3559 3560 DesignatedInitExpr(ASTContext &C, QualType Ty, unsigned NumDesignators, 3561 const Designator *Designators, 3562 SourceLocation EqualOrColonLoc, bool GNUSyntax, 3563 Expr **IndexExprs, unsigned NumIndexExprs, 3564 Expr *Init); 3565 3566 explicit DesignatedInitExpr(unsigned NumSubExprs) 3567 : Expr(DesignatedInitExprClass, EmptyShell()), 3568 NumDesignators(0), Designators(0), NumSubExprs(NumSubExprs) { } 3569 3570public: 3571 /// A field designator, e.g., ".x". 3572 struct FieldDesignator { 3573 /// Refers to the field that is being initialized. The low bit 3574 /// of this field determines whether this is actually a pointer 3575 /// to an IdentifierInfo (if 1) or a FieldDecl (if 0). When 3576 /// initially constructed, a field designator will store an 3577 /// IdentifierInfo*. After semantic analysis has resolved that 3578 /// name, the field designator will instead store a FieldDecl*. 3579 uintptr_t NameOrField; 3580 3581 /// The location of the '.' in the designated initializer. 3582 unsigned DotLoc; 3583 3584 /// The location of the field name in the designated initializer. 3585 unsigned FieldLoc; 3586 }; 3587 3588 /// An array or GNU array-range designator, e.g., "[9]" or "[10..15]". 3589 struct ArrayOrRangeDesignator { 3590 /// Location of the first index expression within the designated 3591 /// initializer expression's list of subexpressions. 3592 unsigned Index; 3593 /// The location of the '[' starting the array range designator. 3594 unsigned LBracketLoc; 3595 /// The location of the ellipsis separating the start and end 3596 /// indices. Only valid for GNU array-range designators. 3597 unsigned EllipsisLoc; 3598 /// The location of the ']' terminating the array range designator. 3599 unsigned RBracketLoc; 3600 }; 3601 3602 /// @brief Represents a single C99 designator. 3603 /// 3604 /// @todo This class is infuriatingly similar to clang::Designator, 3605 /// but minor differences (storing indices vs. storing pointers) 3606 /// keep us from reusing it. Try harder, later, to rectify these 3607 /// differences. 3608 class Designator { 3609 /// @brief The kind of designator this describes. 3610 enum { 3611 FieldDesignator, 3612 ArrayDesignator, 3613 ArrayRangeDesignator 3614 } Kind; 3615 3616 union { 3617 /// A field designator, e.g., ".x". 3618 struct FieldDesignator Field; 3619 /// An array or GNU array-range designator, e.g., "[9]" or "[10..15]". 3620 struct ArrayOrRangeDesignator ArrayOrRange; 3621 }; 3622 friend class DesignatedInitExpr; 3623 3624 public: 3625 Designator() {} 3626 3627 /// @brief Initializes a field designator. 3628 Designator(const IdentifierInfo *FieldName, SourceLocation DotLoc, 3629 SourceLocation FieldLoc) 3630 : Kind(FieldDesignator) { 3631 Field.NameOrField = reinterpret_cast<uintptr_t>(FieldName) | 0x01; 3632 Field.DotLoc = DotLoc.getRawEncoding(); 3633 Field.FieldLoc = FieldLoc.getRawEncoding(); 3634 } 3635 3636 /// @brief Initializes an array designator. 3637 Designator(unsigned Index, SourceLocation LBracketLoc, 3638 SourceLocation RBracketLoc) 3639 : Kind(ArrayDesignator) { 3640 ArrayOrRange.Index = Index; 3641 ArrayOrRange.LBracketLoc = LBracketLoc.getRawEncoding(); 3642 ArrayOrRange.EllipsisLoc = SourceLocation().getRawEncoding(); 3643 ArrayOrRange.RBracketLoc = RBracketLoc.getRawEncoding(); 3644 } 3645 3646 /// @brief Initializes a GNU array-range designator. 3647 Designator(unsigned Index, SourceLocation LBracketLoc, 3648 SourceLocation EllipsisLoc, SourceLocation RBracketLoc) 3649 : Kind(ArrayRangeDesignator) { 3650 ArrayOrRange.Index = Index; 3651 ArrayOrRange.LBracketLoc = LBracketLoc.getRawEncoding(); 3652 ArrayOrRange.EllipsisLoc = EllipsisLoc.getRawEncoding(); 3653 ArrayOrRange.RBracketLoc = RBracketLoc.getRawEncoding(); 3654 } 3655 3656 bool isFieldDesignator() const { return Kind == FieldDesignator; } 3657 bool isArrayDesignator() const { return Kind == ArrayDesignator; } 3658 bool isArrayRangeDesignator() const { return Kind == ArrayRangeDesignator; } 3659 3660 IdentifierInfo *getFieldName() const; 3661 3662 FieldDecl *getField() const { 3663 assert(Kind == FieldDesignator && "Only valid on a field designator"); 3664 if (Field.NameOrField & 0x01) 3665 return 0; 3666 else 3667 return reinterpret_cast<FieldDecl *>(Field.NameOrField); 3668 } 3669 3670 void setField(FieldDecl *FD) { 3671 assert(Kind == FieldDesignator && "Only valid on a field designator"); 3672 Field.NameOrField = reinterpret_cast<uintptr_t>(FD); 3673 } 3674 3675 SourceLocation getDotLoc() const { 3676 assert(Kind == FieldDesignator && "Only valid on a field designator"); 3677 return SourceLocation::getFromRawEncoding(Field.DotLoc); 3678 } 3679 3680 SourceLocation getFieldLoc() const { 3681 assert(Kind == FieldDesignator && "Only valid on a field designator"); 3682 return SourceLocation::getFromRawEncoding(Field.FieldLoc); 3683 } 3684 3685 SourceLocation getLBracketLoc() const { 3686 assert((Kind == ArrayDesignator || Kind == ArrayRangeDesignator) && 3687 "Only valid on an array or array-range designator"); 3688 return SourceLocation::getFromRawEncoding(ArrayOrRange.LBracketLoc); 3689 } 3690 3691 SourceLocation getRBracketLoc() const { 3692 assert((Kind == ArrayDesignator || Kind == ArrayRangeDesignator) && 3693 "Only valid on an array or array-range designator"); 3694 return SourceLocation::getFromRawEncoding(ArrayOrRange.RBracketLoc); 3695 } 3696 3697 SourceLocation getEllipsisLoc() const { 3698 assert(Kind == ArrayRangeDesignator && 3699 "Only valid on an array-range designator"); 3700 return SourceLocation::getFromRawEncoding(ArrayOrRange.EllipsisLoc); 3701 } 3702 3703 unsigned getFirstExprIndex() const { 3704 assert((Kind == ArrayDesignator || Kind == ArrayRangeDesignator) && 3705 "Only valid on an array or array-range designator"); 3706 return ArrayOrRange.Index; 3707 } 3708 3709 SourceLocation getStartLocation() const { 3710 if (Kind == FieldDesignator) 3711 return getDotLoc().isInvalid()? getFieldLoc() : getDotLoc(); 3712 else 3713 return getLBracketLoc(); 3714 } 3715 SourceLocation getEndLocation() const { 3716 return Kind == FieldDesignator ? getFieldLoc() : getRBracketLoc(); 3717 } 3718 SourceRange getSourceRange() const { 3719 return SourceRange(getStartLocation(), getEndLocation()); 3720 } 3721 }; 3722 3723 static DesignatedInitExpr *Create(ASTContext &C, Designator *Designators, 3724 unsigned NumDesignators, 3725 Expr **IndexExprs, unsigned NumIndexExprs, 3726 SourceLocation EqualOrColonLoc, 3727 bool GNUSyntax, Expr *Init); 3728 3729 static DesignatedInitExpr *CreateEmpty(ASTContext &C, unsigned NumIndexExprs); 3730 3731 /// @brief Returns the number of designators in this initializer. 3732 unsigned size() const { return NumDesignators; } 3733 3734 // Iterator access to the designators. 3735 typedef Designator *designators_iterator; 3736 designators_iterator designators_begin() { return Designators; } 3737 designators_iterator designators_end() { 3738 return Designators + NumDesignators; 3739 } 3740 3741 typedef const Designator *const_designators_iterator; 3742 const_designators_iterator designators_begin() const { return Designators; } 3743 const_designators_iterator designators_end() const { 3744 return Designators + NumDesignators; 3745 } 3746 3747 typedef std::reverse_iterator<designators_iterator> 3748 reverse_designators_iterator; 3749 reverse_designators_iterator designators_rbegin() { 3750 return reverse_designators_iterator(designators_end()); 3751 } 3752 reverse_designators_iterator designators_rend() { 3753 return reverse_designators_iterator(designators_begin()); 3754 } 3755 3756 typedef std::reverse_iterator<const_designators_iterator> 3757 const_reverse_designators_iterator; 3758 const_reverse_designators_iterator designators_rbegin() const { 3759 return const_reverse_designators_iterator(designators_end()); 3760 } 3761 const_reverse_designators_iterator designators_rend() const { 3762 return const_reverse_designators_iterator(designators_begin()); 3763 } 3764 3765 Designator *getDesignator(unsigned Idx) { return &designators_begin()[Idx]; } 3766 3767 void setDesignators(ASTContext &C, const Designator *Desigs, 3768 unsigned NumDesigs); 3769 3770 Expr *getArrayIndex(const Designator& D); 3771 Expr *getArrayRangeStart(const Designator& D); 3772 Expr *getArrayRangeEnd(const Designator& D); 3773 3774 /// @brief Retrieve the location of the '=' that precedes the 3775 /// initializer value itself, if present. 3776 SourceLocation getEqualOrColonLoc() const { return EqualOrColonLoc; } 3777 void setEqualOrColonLoc(SourceLocation L) { EqualOrColonLoc = L; } 3778 3779 /// @brief Determines whether this designated initializer used the 3780 /// deprecated GNU syntax for designated initializers. 3781 bool usesGNUSyntax() const { return GNUSyntax; } 3782 void setGNUSyntax(bool GNU) { GNUSyntax = GNU; } 3783 3784 /// @brief Retrieve the initializer value. 3785 Expr *getInit() const { 3786 return cast<Expr>(*const_cast<DesignatedInitExpr*>(this)->child_begin()); 3787 } 3788 3789 void setInit(Expr *init) { 3790 *child_begin() = init; 3791 } 3792 3793 /// \brief Retrieve the total number of subexpressions in this 3794 /// designated initializer expression, including the actual 3795 /// initialized value and any expressions that occur within array 3796 /// and array-range designators. 3797 unsigned getNumSubExprs() const { return NumSubExprs; } 3798 3799 Expr *getSubExpr(unsigned Idx) { 3800 assert(Idx < NumSubExprs && "Subscript out of range"); 3801 char* Ptr = static_cast<char*>(static_cast<void *>(this)); 3802 Ptr += sizeof(DesignatedInitExpr); 3803 return reinterpret_cast<Expr**>(reinterpret_cast<void**>(Ptr))[Idx]; 3804 } 3805 3806 void setSubExpr(unsigned Idx, Expr *E) { 3807 assert(Idx < NumSubExprs && "Subscript out of range"); 3808 char* Ptr = static_cast<char*>(static_cast<void *>(this)); 3809 Ptr += sizeof(DesignatedInitExpr); 3810 reinterpret_cast<Expr**>(reinterpret_cast<void**>(Ptr))[Idx] = E; 3811 } 3812 3813 /// \brief Replaces the designator at index @p Idx with the series 3814 /// of designators in [First, Last). 3815 void ExpandDesignator(ASTContext &C, unsigned Idx, const Designator *First, 3816 const Designator *Last); 3817 3818 SourceRange getDesignatorsSourceRange() const; 3819 3820 SourceRange getSourceRange() const; 3821 3822 static bool classof(const Stmt *T) { 3823 return T->getStmtClass() == DesignatedInitExprClass; 3824 } 3825 static bool classof(const DesignatedInitExpr *) { return true; } 3826 3827 // Iterators 3828 child_range children() { 3829 Stmt **begin = reinterpret_cast<Stmt**>(this + 1); 3830 return child_range(begin, begin + NumSubExprs); 3831 } 3832}; 3833 3834/// \brief Represents an implicitly-generated value initialization of 3835/// an object of a given type. 3836/// 3837/// Implicit value initializations occur within semantic initializer 3838/// list expressions (InitListExpr) as placeholders for subobject 3839/// initializations not explicitly specified by the user. 3840/// 3841/// \see InitListExpr 3842class ImplicitValueInitExpr : public Expr { 3843public: 3844 explicit ImplicitValueInitExpr(QualType ty) 3845 : Expr(ImplicitValueInitExprClass, ty, VK_RValue, OK_Ordinary, 3846 false, false, ty->isInstantiationDependentType(), false) { } 3847 3848 /// \brief Construct an empty implicit value initialization. 3849 explicit ImplicitValueInitExpr(EmptyShell Empty) 3850 : Expr(ImplicitValueInitExprClass, Empty) { } 3851 3852 static bool classof(const Stmt *T) { 3853 return T->getStmtClass() == ImplicitValueInitExprClass; 3854 } 3855 static bool classof(const ImplicitValueInitExpr *) { return true; } 3856 3857 SourceRange getSourceRange() const { 3858 return SourceRange(); 3859 } 3860 3861 // Iterators 3862 child_range children() { return child_range(); } 3863}; 3864 3865 3866class ParenListExpr : public Expr { 3867 Stmt **Exprs; 3868 unsigned NumExprs; 3869 SourceLocation LParenLoc, RParenLoc; 3870 3871public: 3872 ParenListExpr(ASTContext& C, SourceLocation lparenloc, Expr **exprs, 3873 unsigned numexprs, SourceLocation rparenloc, QualType T); 3874 3875 /// \brief Build an empty paren list. 3876 explicit ParenListExpr(EmptyShell Empty) : Expr(ParenListExprClass, Empty) { } 3877 3878 unsigned getNumExprs() const { return NumExprs; } 3879 3880 const Expr* getExpr(unsigned Init) const { 3881 assert(Init < getNumExprs() && "Initializer access out of range!"); 3882 return cast_or_null<Expr>(Exprs[Init]); 3883 } 3884 3885 Expr* getExpr(unsigned Init) { 3886 assert(Init < getNumExprs() && "Initializer access out of range!"); 3887 return cast_or_null<Expr>(Exprs[Init]); 3888 } 3889 3890 Expr **getExprs() { return reinterpret_cast<Expr **>(Exprs); } 3891 3892 SourceLocation getLParenLoc() const { return LParenLoc; } 3893 SourceLocation getRParenLoc() const { return RParenLoc; } 3894 3895 SourceRange getSourceRange() const { 3896 return SourceRange(LParenLoc, RParenLoc); 3897 } 3898 static bool classof(const Stmt *T) { 3899 return T->getStmtClass() == ParenListExprClass; 3900 } 3901 static bool classof(const ParenListExpr *) { return true; } 3902 3903 // Iterators 3904 child_range children() { 3905 return child_range(&Exprs[0], &Exprs[0]+NumExprs); 3906 } 3907 3908 friend class ASTStmtReader; 3909 friend class ASTStmtWriter; 3910}; 3911 3912 3913/// \brief Represents a C1X generic selection. 3914/// 3915/// A generic selection (C1X 6.5.1.1) contains an unevaluated controlling 3916/// expression, followed by one or more generic associations. Each generic 3917/// association specifies a type name and an expression, or "default" and an 3918/// expression (in which case it is known as a default generic association). 3919/// The type and value of the generic selection are identical to those of its 3920/// result expression, which is defined as the expression in the generic 3921/// association with a type name that is compatible with the type of the 3922/// controlling expression, or the expression in the default generic association 3923/// if no types are compatible. For example: 3924/// 3925/// @code 3926/// _Generic(X, double: 1, float: 2, default: 3) 3927/// @endcode 3928/// 3929/// The above expression evaluates to 1 if 1.0 is substituted for X, 2 if 1.0f 3930/// or 3 if "hello". 3931/// 3932/// As an extension, generic selections are allowed in C++, where the following 3933/// additional semantics apply: 3934/// 3935/// Any generic selection whose controlling expression is type-dependent or 3936/// which names a dependent type in its association list is result-dependent, 3937/// which means that the choice of result expression is dependent. 3938/// Result-dependent generic associations are both type- and value-dependent. 3939class GenericSelectionExpr : public Expr { 3940 enum { CONTROLLING, END_EXPR }; 3941 TypeSourceInfo **AssocTypes; 3942 Stmt **SubExprs; 3943 unsigned NumAssocs, ResultIndex; 3944 SourceLocation GenericLoc, DefaultLoc, RParenLoc; 3945 3946public: 3947 GenericSelectionExpr(ASTContext &Context, 3948 SourceLocation GenericLoc, Expr *ControllingExpr, 3949 TypeSourceInfo **AssocTypes, Expr **AssocExprs, 3950 unsigned NumAssocs, SourceLocation DefaultLoc, 3951 SourceLocation RParenLoc, 3952 bool ContainsUnexpandedParameterPack, 3953 unsigned ResultIndex); 3954 3955 /// This constructor is used in the result-dependent case. 3956 GenericSelectionExpr(ASTContext &Context, 3957 SourceLocation GenericLoc, Expr *ControllingExpr, 3958 TypeSourceInfo **AssocTypes, Expr **AssocExprs, 3959 unsigned NumAssocs, SourceLocation DefaultLoc, 3960 SourceLocation RParenLoc, 3961 bool ContainsUnexpandedParameterPack); 3962 3963 explicit GenericSelectionExpr(EmptyShell Empty) 3964 : Expr(GenericSelectionExprClass, Empty) { } 3965 3966 unsigned getNumAssocs() const { return NumAssocs; } 3967 3968 SourceLocation getGenericLoc() const { return GenericLoc; } 3969 SourceLocation getDefaultLoc() const { return DefaultLoc; } 3970 SourceLocation getRParenLoc() const { return RParenLoc; } 3971 3972 const Expr *getAssocExpr(unsigned i) const { 3973 return cast<Expr>(SubExprs[END_EXPR+i]); 3974 } 3975 Expr *getAssocExpr(unsigned i) { return cast<Expr>(SubExprs[END_EXPR+i]); } 3976 3977 const TypeSourceInfo *getAssocTypeSourceInfo(unsigned i) const { 3978 return AssocTypes[i]; 3979 } 3980 TypeSourceInfo *getAssocTypeSourceInfo(unsigned i) { return AssocTypes[i]; } 3981 3982 QualType getAssocType(unsigned i) const { 3983 if (const TypeSourceInfo *TS = getAssocTypeSourceInfo(i)) 3984 return TS->getType(); 3985 else 3986 return QualType(); 3987 } 3988 3989 const Expr *getControllingExpr() const { 3990 return cast<Expr>(SubExprs[CONTROLLING]); 3991 } 3992 Expr *getControllingExpr() { return cast<Expr>(SubExprs[CONTROLLING]); } 3993 3994 /// Whether this generic selection is result-dependent. 3995 bool isResultDependent() const { return ResultIndex == -1U; } 3996 3997 /// The zero-based index of the result expression's generic association in 3998 /// the generic selection's association list. Defined only if the 3999 /// generic selection is not result-dependent. 4000 unsigned getResultIndex() const { 4001 assert(!isResultDependent() && "Generic selection is result-dependent"); 4002 return ResultIndex; 4003 } 4004 4005 /// The generic selection's result expression. Defined only if the 4006 /// generic selection is not result-dependent. 4007 const Expr *getResultExpr() const { return getAssocExpr(getResultIndex()); } 4008 Expr *getResultExpr() { return getAssocExpr(getResultIndex()); } 4009 4010 SourceRange getSourceRange() const { 4011 return SourceRange(GenericLoc, RParenLoc); 4012 } 4013 static bool classof(const Stmt *T) { 4014 return T->getStmtClass() == GenericSelectionExprClass; 4015 } 4016 static bool classof(const GenericSelectionExpr *) { return true; } 4017 4018 child_range children() { 4019 return child_range(SubExprs, SubExprs+END_EXPR+NumAssocs); 4020 } 4021 4022 friend class ASTStmtReader; 4023}; 4024 4025//===----------------------------------------------------------------------===// 4026// Clang Extensions 4027//===----------------------------------------------------------------------===// 4028 4029 4030/// ExtVectorElementExpr - This represents access to specific elements of a 4031/// vector, and may occur on the left hand side or right hand side. For example 4032/// the following is legal: "V.xy = V.zw" if V is a 4 element extended vector. 4033/// 4034/// Note that the base may have either vector or pointer to vector type, just 4035/// like a struct field reference. 4036/// 4037class ExtVectorElementExpr : public Expr { 4038 Stmt *Base; 4039 IdentifierInfo *Accessor; 4040 SourceLocation AccessorLoc; 4041public: 4042 ExtVectorElementExpr(QualType ty, ExprValueKind VK, Expr *base, 4043 IdentifierInfo &accessor, SourceLocation loc) 4044 : Expr(ExtVectorElementExprClass, ty, VK, 4045 (VK == VK_RValue ? OK_Ordinary : OK_VectorComponent), 4046 base->isTypeDependent(), base->isValueDependent(), 4047 base->isInstantiationDependent(), 4048 base->containsUnexpandedParameterPack()), 4049 Base(base), Accessor(&accessor), AccessorLoc(loc) {} 4050 4051 /// \brief Build an empty vector element expression. 4052 explicit ExtVectorElementExpr(EmptyShell Empty) 4053 : Expr(ExtVectorElementExprClass, Empty) { } 4054 4055 const Expr *getBase() const { return cast<Expr>(Base); } 4056 Expr *getBase() { return cast<Expr>(Base); } 4057 void setBase(Expr *E) { Base = E; } 4058 4059 IdentifierInfo &getAccessor() const { return *Accessor; } 4060 void setAccessor(IdentifierInfo *II) { Accessor = II; } 4061 4062 SourceLocation getAccessorLoc() const { return AccessorLoc; } 4063 void setAccessorLoc(SourceLocation L) { AccessorLoc = L; } 4064 4065 /// getNumElements - Get the number of components being selected. 4066 unsigned getNumElements() const; 4067 4068 /// containsDuplicateElements - Return true if any element access is 4069 /// repeated. 4070 bool containsDuplicateElements() const; 4071 4072 /// getEncodedElementAccess - Encode the elements accessed into an llvm 4073 /// aggregate Constant of ConstantInt(s). 4074 void getEncodedElementAccess(SmallVectorImpl<unsigned> &Elts) const; 4075 4076 SourceRange getSourceRange() const { 4077 return SourceRange(getBase()->getLocStart(), AccessorLoc); 4078 } 4079 4080 /// isArrow - Return true if the base expression is a pointer to vector, 4081 /// return false if the base expression is a vector. 4082 bool isArrow() const; 4083 4084 static bool classof(const Stmt *T) { 4085 return T->getStmtClass() == ExtVectorElementExprClass; 4086 } 4087 static bool classof(const ExtVectorElementExpr *) { return true; } 4088 4089 // Iterators 4090 child_range children() { return child_range(&Base, &Base+1); } 4091}; 4092 4093 4094/// BlockExpr - Adaptor class for mixing a BlockDecl with expressions. 4095/// ^{ statement-body } or ^(int arg1, float arg2){ statement-body } 4096class BlockExpr : public Expr { 4097protected: 4098 BlockDecl *TheBlock; 4099public: 4100 BlockExpr(BlockDecl *BD, QualType ty) 4101 : Expr(BlockExprClass, ty, VK_RValue, OK_Ordinary, 4102 ty->isDependentType(), false, 4103 // FIXME: Check for instantiate-dependence in the statement? 4104 ty->isInstantiationDependentType(), 4105 false), 4106 TheBlock(BD) {} 4107 4108 /// \brief Build an empty block expression. 4109 explicit BlockExpr(EmptyShell Empty) : Expr(BlockExprClass, Empty) { } 4110 4111 const BlockDecl *getBlockDecl() const { return TheBlock; } 4112 BlockDecl *getBlockDecl() { return TheBlock; } 4113 void setBlockDecl(BlockDecl *BD) { TheBlock = BD; } 4114 4115 // Convenience functions for probing the underlying BlockDecl. 4116 SourceLocation getCaretLocation() const; 4117 const Stmt *getBody() const; 4118 Stmt *getBody(); 4119 4120 SourceRange getSourceRange() const { 4121 return SourceRange(getCaretLocation(), getBody()->getLocEnd()); 4122 } 4123 4124 /// getFunctionType - Return the underlying function type for this block. 4125 const FunctionType *getFunctionType() const; 4126 4127 static bool classof(const Stmt *T) { 4128 return T->getStmtClass() == BlockExprClass; 4129 } 4130 static bool classof(const BlockExpr *) { return true; } 4131 4132 // Iterators 4133 child_range children() { return child_range(); } 4134}; 4135 4136/// BlockDeclRefExpr - A reference to a local variable declared in an 4137/// enclosing scope. 4138class BlockDeclRefExpr : public Expr { 4139 VarDecl *D; 4140 SourceLocation Loc; 4141 bool IsByRef : 1; 4142 bool ConstQualAdded : 1; 4143public: 4144 BlockDeclRefExpr(VarDecl *d, QualType t, ExprValueKind VK, 4145 SourceLocation l, bool ByRef, bool constAdded = false); 4146 4147 // \brief Build an empty reference to a declared variable in a 4148 // block. 4149 explicit BlockDeclRefExpr(EmptyShell Empty) 4150 : Expr(BlockDeclRefExprClass, Empty) { } 4151 4152 VarDecl *getDecl() { return D; } 4153 const VarDecl *getDecl() const { return D; } 4154 void setDecl(VarDecl *VD) { D = VD; } 4155 4156 SourceLocation getLocation() const { return Loc; } 4157 void setLocation(SourceLocation L) { Loc = L; } 4158 4159 SourceRange getSourceRange() const { return SourceRange(Loc); } 4160 4161 bool isByRef() const { return IsByRef; } 4162 void setByRef(bool BR) { IsByRef = BR; } 4163 4164 bool isConstQualAdded() const { return ConstQualAdded; } 4165 void setConstQualAdded(bool C) { ConstQualAdded = C; } 4166 4167 static bool classof(const Stmt *T) { 4168 return T->getStmtClass() == BlockDeclRefExprClass; 4169 } 4170 static bool classof(const BlockDeclRefExpr *) { return true; } 4171 4172 // Iterators 4173 child_range children() { return child_range(); } 4174}; 4175 4176/// AsTypeExpr - Clang builtin function __builtin_astype [OpenCL 6.2.4.2] 4177/// This AST node provides support for reinterpreting a type to another 4178/// type of the same size. 4179class AsTypeExpr : public Expr { // Should this be an ExplicitCastExpr? 4180private: 4181 Stmt *SrcExpr; 4182 SourceLocation BuiltinLoc, RParenLoc; 4183 4184 friend class ASTReader; 4185 friend class ASTStmtReader; 4186 explicit AsTypeExpr(EmptyShell Empty) : Expr(AsTypeExprClass, Empty) {} 4187 4188public: 4189 AsTypeExpr(Expr* SrcExpr, QualType DstType, 4190 ExprValueKind VK, ExprObjectKind OK, 4191 SourceLocation BuiltinLoc, SourceLocation RParenLoc) 4192 : Expr(AsTypeExprClass, DstType, VK, OK, 4193 DstType->isDependentType(), 4194 DstType->isDependentType() || SrcExpr->isValueDependent(), 4195 (DstType->isInstantiationDependentType() || 4196 SrcExpr->isInstantiationDependent()), 4197 (DstType->containsUnexpandedParameterPack() || 4198 SrcExpr->containsUnexpandedParameterPack())), 4199 SrcExpr(SrcExpr), BuiltinLoc(BuiltinLoc), RParenLoc(RParenLoc) {} 4200 4201 /// getSrcExpr - Return the Expr to be converted. 4202 Expr *getSrcExpr() const { return cast<Expr>(SrcExpr); } 4203 4204 /// getBuiltinLoc - Return the location of the __builtin_astype token. 4205 SourceLocation getBuiltinLoc() const { return BuiltinLoc; } 4206 4207 /// getRParenLoc - Return the location of final right parenthesis. 4208 SourceLocation getRParenLoc() const { return RParenLoc; } 4209 4210 SourceRange getSourceRange() const { 4211 return SourceRange(BuiltinLoc, RParenLoc); 4212 } 4213 4214 static bool classof(const Stmt *T) { 4215 return T->getStmtClass() == AsTypeExprClass; 4216 } 4217 static bool classof(const AsTypeExpr *) { return true; } 4218 4219 // Iterators 4220 child_range children() { return child_range(&SrcExpr, &SrcExpr+1); } 4221}; 4222} // end namespace clang 4223 4224#endif 4225