Expr.h revision 60b70388e43d146d968a1cc0705b30cb2d7263fe
11e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles)//===--- Expr.h - Classes for representing expressions ----------*- C++ -*-===// 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// The LLVM Compiler Infrastructure 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// 51e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles)// This file is distributed under the University of Illinois Open Source 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// License. See LICENSE.TXT for details. 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// 87d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles)//===----------------------------------------------------------------------===// 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// 10868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)// This file defines the Expr interface and subclasses. 11868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)// 12868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)//===----------------------------------------------------------------------===// 13eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifndef LLVM_CLANG_AST_EXPR_H 15bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdoch#define LLVM_CLANG_AST_EXPR_H 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 171e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles)#include "clang/AST/APValue.h" 181e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles)#include "clang/AST/Decl.h" 191e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles)#include "clang/AST/Stmt.h" 20f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)#include "clang/AST/Type.h" 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "clang/AST/DeclAccessPair.h" 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "clang/AST/OperationKinds.h" 235d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)#include "clang/AST/ASTVector.h" 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "clang/AST/TemplateBase.h" 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "clang/Basic/TargetInfo.h" 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "clang/Basic/TypeTraits.h" 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "llvm/ADT/APSInt.h" 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "llvm/ADT/APFloat.h" 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "llvm/ADT/SmallVector.h" 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "llvm/ADT/StringRef.h" 312a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "llvm/Support/Compiler.h" 322a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include <cctype> 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace clang { 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) class ASTContext; 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) class APValue; 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) class Decl; 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) class IdentifierInfo; 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) class ParmVarDecl; 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) class NamedDecl; 412a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) class ValueDecl; 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) class BlockDecl; 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) class CXXBaseSpecifier; 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) class CXXOperatorCallExpr; 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) class CXXMemberCallExpr; 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) class ObjCPropertyRefExpr; 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) class OpaqueValueExpr; 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// \brief A simple array of base specifiers. 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef SmallVector<CXXBaseSpecifier*, 4> CXXCastPath; 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// Expr - This represents one expression. Note that Expr's are subclasses of 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// Stmt. This allows an expression to be transparently used any place a Stmt 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// is required. 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class Expr : public Stmt { 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QualType TR; 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)protected: 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Expr(StmtClass SC, QualType T, ExprValueKind VK, ExprObjectKind OK, 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool TD, bool VD, bool ID, bool ContainsUnexpandedParameterPack) 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : Stmt(SC) 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) { 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ExprBits.TypeDependent = TD; 655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ExprBits.ValueDependent = VD; 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ExprBits.InstantiationDependent = ID; 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ExprBits.ValueKind = VK; 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ExprBits.ObjectKind = OK; 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ExprBits.ContainsUnexpandedParameterPack = ContainsUnexpandedParameterPack; 7090dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) setType(T); 7190dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) } 7290dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) 735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief Construct an empty expression. 745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) explicit Expr(StmtClass SC, EmptyShell) : Stmt(SC) { } 755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)public: 775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QualType getType() const { return TR; } 785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void setType(QualType t) { 795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // In C++, the type of an expression is always adjusted so that it 805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // will not have reference type an expression will never have 815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // reference type (C++ [expr]p6). Use 825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // QualType::getNonReferenceType() to retrieve the non-reference 835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // type. Additionally, inspect Expr::isLvalue to determine whether 845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // an expression that is adjusted in this manner should be 855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // considered an lvalue. 865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) assert((t.isNull() || !t->isReferenceType()) && 875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) "Expressions can't have reference type"); 885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) TR = t; 905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// isValueDependent - Determines whether this expression is 935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// value-dependent (C++ [temp.dep.constexpr]). For example, the 945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// array bound of "Chars" in the following example is 955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// value-dependent. 965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// @code 975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// template<int Size, char (&Chars)[Size]> struct meta_string; 985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// @endcode 995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool isValueDependent() const { return ExprBits.ValueDependent; } 10090dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) 1015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief Set whether this expression is value-dependent or not. 1025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void setValueDependent(bool VD) { 1035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ExprBits.ValueDependent = VD; 1045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (VD) 1055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ExprBits.InstantiationDependent = true; 1065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 107bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdoch 108bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdoch /// isTypeDependent - Determines whether this expression is 1095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// type-dependent (C++ [temp.dep.expr]), which means that its type 1105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// could change from one template instantiation to the next. For 1115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// example, the expressions "x" and "x + y" are type-dependent in 1125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// the following code, but "y" is not type-dependent: 113bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdoch /// @code 114bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdoch /// template<typename T> 115bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdoch /// void add(T x, int y) { 1165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// x + y; 1175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// } 1185c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu /// @endcode 1195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool isTypeDependent() const { return ExprBits.TypeDependent; } 1205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief Set whether this expression is type-dependent or not. 1225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void setTypeDependent(bool TD) { 1235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ExprBits.TypeDependent = TD; 1245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (TD) 1255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ExprBits.InstantiationDependent = true; 1265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief Whether this expression is instantiation-dependent, meaning that 1295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// it depends in some way on a template parameter, even if neither its type 1305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// nor (constant) value can change due to the template instantiation. 1315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// 1325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// In the following example, the expression \c sizeof(sizeof(T() + T())) is 1335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// instantiation-dependent (since it involves a template parameter \c T), but 1345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// is neither type- nor value-dependent, since the type of the inner 1355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \c sizeof is known (\c std::size_t) and therefore the size of the outer 1365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \c sizeof is known. 1375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// 1385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \code 1395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// template<typename T> 140a93a17c8d99d686bd4a1511e5504e5e6cc9fcadfTorne (Richard Coles) /// void f(T x, T y) { 1415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// sizeof(sizeof(T() + T()); 1425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// } 1435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \endcode 1445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// 1455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool isInstantiationDependent() const { 1465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return ExprBits.InstantiationDependent; 1475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief Set whether this expression is instantiation-dependent or not. 1505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void setInstantiationDependent(bool ID) { 1515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ExprBits.InstantiationDependent = ID; 1525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief Whether this expression contains an unexpanded parameter 1555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// pack (for C++0x variadic templates). 1565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// 1575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// Given the following function template: 1585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// 1595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \code 1605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// template<typename F, typename ...Types> 1615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// void forward(const F &f, Types &&...args) { 1625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// f(static_cast<Types&&>(args)...); 1635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// } 1645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \endcode 1655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// 1665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// The expressions \c args and \c static_cast<Types&&>(args) both 167a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) /// contain parameter packs. 1685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool containsUnexpandedParameterPack() const { 1695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return ExprBits.ContainsUnexpandedParameterPack; 1705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief Set the bit that describes whether this expression 1735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// contains an unexpanded parameter pack. 1745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void setContainsUnexpandedParameterPack(bool PP = true) { 1755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ExprBits.ContainsUnexpandedParameterPack = PP; 1765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// getExprLoc - Return the preferred location for the arrow when diagnosing 1795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// a problem with a generic expression. 1805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SourceLocation getExprLoc() const LLVM_READONLY; 1815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// isUnusedResultAWarning - Return true if this immediate expression should 1835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// be warned about if the result is unused. If so, fill in expr, location, 1845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// and ranges with expr to warn on and source locations/ranges appropriate 1855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// for a warning. 1865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool isUnusedResultAWarning(const Expr *&WarnExpr, SourceLocation &Loc, 1875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SourceRange &R1, SourceRange &R2, 1885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ASTContext &Ctx) const; 1895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// isLValue - True if this expression is an "l-value" according to 1915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// the rules of the current language. C and C++ give somewhat 1925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// different rules for this concept, but in general, the result of 1935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// an l-value expression identifies a specific object whereas the 1945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// result of an r-value expression is a value detached from any 1955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// specific storage. 1965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// 1975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// C++0x divides the concept of "r-value" into pure r-values 1985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// ("pr-values") and so-called expiring values ("x-values"), which 1991e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) /// identify specific objects that can be safely cannibalized for 2005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// their resources. This is an unfortunate abuse of terminology on 2015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// the part of the C++ committee. In Clang, when we say "r-value", 2025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// we generally mean a pr-value. 2035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool isLValue() const { return getValueKind() == VK_LValue; } 2045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool isRValue() const { return getValueKind() == VK_RValue; } 2055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool isXValue() const { return getValueKind() == VK_XValue; } 2061e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) bool isGLValue() const { return getValueKind() != VK_RValue; } 2075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 208c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) enum LValueClassification { 2095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) LV_Valid, 2105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) LV_NotObjectType, 211a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) LV_IncompleteVoidType, 2125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) LV_DuplicateVectorComponents, 2132a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) LV_InvalidExpression, 214f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) LV_InvalidMessageExpression, 2155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) LV_MemberFunction, 2165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) LV_SubObjCPropertySetting, 2175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) LV_ClassTemporary, 2185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) LV_ArrayTemporary 2195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) }; 2205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// Reasons why an expression might not be an l-value. 2215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) LValueClassification ClassifyLValue(ASTContext &Ctx) const; 2225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2231e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) /// isModifiableLvalue - C99 6.3.2.1: an lvalue that does not have array type, 2245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// does not have an incomplete type, does not have a const-qualified type, 2255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// and if it is a structure or union, does not have any member (including, 2265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// recursively, any member or element of all contained aggregates or unions) 2275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// with a const-qualified type. 2285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// 2295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \param Loc [in,out] - A source location which *may* be filled 2305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// in with the location of the expression making this a 2315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// non-modifiable lvalue, if specified. 2325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) enum isModifiableLvalueResult { 2335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) MLV_Valid, 2345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) MLV_NotObjectType, 2355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) MLV_IncompleteVoidType, 2365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) MLV_DuplicateVectorComponents, 2375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) MLV_InvalidExpression, 2385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) MLV_LValueCast, // Specialized form of MLV_InvalidExpression. 2395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) MLV_IncompleteType, 2405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) MLV_ConstQualified, 2415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) MLV_ArrayType, 2425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) MLV_ReadonlyProperty, 2435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) MLV_NoSetterProperty, 2445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) MLV_MemberFunction, 2455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) MLV_SubObjCPropertySetting, 2465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) MLV_InvalidMessageExpression, 2475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) MLV_ClassTemporary, 2485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) MLV_ArrayTemporary 2495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) }; 2505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) isModifiableLvalueResult isModifiableLvalue(ASTContext &Ctx, 2515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SourceLocation *Loc = 0) const; 2525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief The return type of classify(). Represents the C++0x expression 2545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// taxonomy. 2555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) class Classification { 2565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) public: 2575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief The various classification results. Most of these mean prvalue. 2585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) enum Kinds { 2595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CL_LValue, 2605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CL_XValue, 2615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CL_Function, // Functions cannot be lvalues in C. 2625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CL_Void, // Void cannot be an lvalue in C. 2635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CL_AddressableVoid, // Void expression whose address can be taken in C. 2645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CL_DuplicateVectorComponents, // A vector shuffle with dupes. 2655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CL_MemberFunction, // An expression referring to a member function 2665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CL_SubObjCPropertySetting, 2675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CL_ClassTemporary, // A temporary of class type, or subobject thereof. 2685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CL_ArrayTemporary, // A temporary of array type. 2695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CL_ObjCMessageRValue, // ObjC message is an rvalue 2705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CL_PRValue // A prvalue for any other reason, of any other type 2714e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) }; 2724e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) /// \brief The results of modification testing. 2734e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) enum ModifiableType { 2745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CM_Untested, // testModifiable was false. 2754e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) CM_Modifiable, 2765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CM_RValue, // Not modifiable because it's an rvalue 2775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CM_Function, // Not modifiable because it's a function; C++ only 2784e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) CM_LValueCast, // Same as CM_RValue, but indicates GCC cast-as-lvalue ext 2795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CM_NoSetterProperty,// Implicit assignment to ObjC property without setter 2805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CM_ConstQualified, 2815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CM_ArrayType, 282868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) CM_IncompleteType 283868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) }; 284868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) 285868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) private: 286868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) friend class Expr; 287868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) 288868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) unsigned short Kind; 289868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) unsigned short Modifiable; 290868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) 291868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) explicit Classification(Kinds k, ModifiableType m) 292868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) : Kind(k), Modifiable(m) 293868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) {} 294868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) 295868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) public: 296868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) Classification() {} 297868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) 298868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) Kinds getKind() const { return static_cast<Kinds>(Kind); } 299868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) ModifiableType getModifiable() const { 300868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) assert(Modifiable != CM_Untested && "Did not test for modifiability."); 3015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return static_cast<ModifiableType>(Modifiable); 3025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 303868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) bool isLValue() const { return Kind == CL_LValue; } 3045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool isXValue() const { return Kind == CL_XValue; } 3055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool isGLValue() const { return Kind <= CL_XValue; } 3064e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) bool isPRValue() const { return Kind >= CL_Function; } 3074e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) bool isRValue() const { return Kind >= CL_XValue; } 3084e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) bool isModifiable() const { return getModifiable() == CM_Modifiable; } 3094e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) 3104e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) /// \brief Create a simple, modifiably lvalue 3114e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) static Classification makeSimpleLValue() { 3124e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) return Classification(CL_LValue, CM_Modifiable); 3135d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) } 3144e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) 3154e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) }; 3165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief Classify - Classify this expression according to the C++0x 317868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) /// expression taxonomy. 3185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// 3195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// C++0x defines ([basic.lval]) a new taxonomy of expressions to replace the 3205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// old lvalue vs rvalue. This function determines the type of expression this 3211e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) /// is. There are three expression types: 3225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// - lvalues are classical lvalues as in C++03. 3235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// - prvalues are equivalent to rvalues in C++03. 3241e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) /// - xvalues are expressions yielding unnamed rvalue references, e.g. a 3255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// function returning an rvalue reference. 326868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) /// lvalues and xvalues are collectively referred to as glvalues, while 327868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) /// prvalues and xvalues together form rvalues. 3285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Classification Classify(ASTContext &Ctx) const { 3295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return ClassifyImpl(Ctx, 0); 3305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 3315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief ClassifyModifiable - Classify this expression according to the 3335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// C++0x expression taxonomy, and see if it is valid on the left side 3345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// of an assignment. 3355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// 336868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) /// This function extends classify in that it also tests whether the 3375d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) /// expression is modifiable (C99 6.3.2.1p1). 3385d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) /// \param Loc A source location that might be filled with a relevant location 3395d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) /// if the expression is not modifiable. 3405d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) Classification ClassifyModifiable(ASTContext &Ctx, SourceLocation &Loc) const{ 3415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return ClassifyImpl(Ctx, &Loc); 3425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 3435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// getValueKindForType - Given a formal return or parameter type, 3455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// give its value kind. 3465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static ExprValueKind getValueKindForType(QualType T) { 3475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (const ReferenceType *RT = T->getAs<ReferenceType>()) 3485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return (isa<LValueReferenceType>(RT) 3495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ? VK_LValue 3505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : (RT->getPointeeType()->isFunctionType() 3515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ? VK_LValue : VK_XValue)); 3525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return VK_RValue; 3532a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 3545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// getValueKind - The value kind that this expression produces. 356868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) ExprValueKind getValueKind() const { 3575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return static_cast<ExprValueKind>(ExprBits.ValueKind); 3585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 3595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// getObjectKind - The object kind that this expression produces. 3615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// Object kinds are meaningful only for expressions that yield an 3625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// l-value or x-value. 363a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) ExprObjectKind getObjectKind() const { 3645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return static_cast<ExprObjectKind>(ExprBits.ObjectKind); 365868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) } 3665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool isOrdinaryOrBitFieldObject() const { 3685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ExprObjectKind OK = getObjectKind(); 3695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return (OK == OK_Ordinary || OK == OK_BitField); 3705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 3715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// setValueKind - Set the value kind produced by this expression. 3735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void setValueKind(ExprValueKind Cat) { ExprBits.ValueKind = Cat; } 3745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// setObjectKind - Set the object kind produced by this expression. 3765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void setObjectKind(ExprObjectKind Cat) { ExprBits.ObjectKind = Cat; } 3775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)private: 3795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Classification ClassifyImpl(ASTContext &Ctx, SourceLocation *Loc) const; 3805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)public: 3825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief If this expression refers to a bit-field, retrieve the 3845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// declaration of that bit-field. 3855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) FieldDecl *getBitField(); 3862a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 3875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const FieldDecl *getBitField() const { 3885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return const_cast<Expr*>(this)->getBitField(); 3895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 3905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief If this expression is an l-value for an Objective C 3925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// property, find the underlying property reference expression. 3935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const ObjCPropertyRefExpr *getObjCProperty() const; 3945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief Returns whether this expression refers to a vector element. 3965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool refersToVectorElement() const; 3975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief Returns whether this expression has a placeholder type. 3995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool hasPlaceholderType() const { 400868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) return getType()->isPlaceholderType(); 401868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) } 402868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) 403868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) /// \brief Returns whether this expression has a specific placeholder type. 404868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) bool hasPlaceholderType(BuiltinType::Kind K) const { 4055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) assert(BuiltinType::isPlaceholderTypeKind(K)); 4065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (const BuiltinType *BT = dyn_cast<BuiltinType>(getType())) 4075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return BT->getKind() == K; 4085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 4095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 4105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// isKnownToHaveBooleanValue - Return true if this is an integer expression 4125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// that is known to return 0 or 1. This happens for _Bool/bool expressions 4135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// but also int expressions which are produced by things like comparisons in 4145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// C. 4155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool isKnownToHaveBooleanValue() const; 4165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// isIntegerConstantExpr - Return true if this expression is a valid integer 4185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// constant expression, and, if so, return its value in Result. If not a 4195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// valid i-c-e, return false and fill in Loc (if specified) with the location 4205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// of the invalid expression. 4215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// 4225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// Note: This does not perform the implicit conversions required by C++11 4235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// [expr.const]p5. 424868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) bool isIntegerConstantExpr(llvm::APSInt &Result, ASTContext &Ctx, 425868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) SourceLocation *Loc = 0, 426868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) bool isEvaluated = true) const; 427868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) bool isIntegerConstantExpr(ASTContext &Ctx, SourceLocation *Loc = 0) const; 428868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) 429868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) /// isCXX98IntegralConstantExpr - Return true if this expression is an 430868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) /// integral constant expression in C++98. Can only be used in C++. 431868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) bool isCXX98IntegralConstantExpr(ASTContext &Ctx) const; 432868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) 433868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) /// isCXX11ConstantExpr - Return true if this expression is a constant 434868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) /// expression in C++11. Can only be used in C++. 4355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// 436868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) /// Note: This does not perform the implicit conversions required by C++11 4370529e5d033099cbfc42635f6f6183833b09dff6eBen Murdoch /// [expr.const]p5. 438868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) bool isCXX11ConstantExpr(ASTContext &Ctx, APValue *Result = 0, 439868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) SourceLocation *Loc = 0) const; 440868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) 441868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) /// isPotentialConstantExpr - Return true if this function's definition 442868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) /// might be usable in a constant expression in C++11, if it were marked 443868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) /// constexpr. Return false if the function can never produce a constant 444868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) /// expression, along with diagnostics describing why not. 445868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) static bool isPotentialConstantExpr(const FunctionDecl *FD, 4465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) llvm::SmallVectorImpl< 447868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) PartialDiagnosticAt> &Diags); 448868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) 449868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) /// isConstantInitializer - Returns true if this expression can be emitted to 4505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// IR as a constant, and thus can be used as a constant initializer in C. 4515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool isConstantInitializer(ASTContext &Ctx, bool ForRef) const; 4525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// EvalStatus is a struct with detailed info about an evaluation in progress. 4545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) struct EvalStatus { 4555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// HasSideEffects - Whether the evaluated expression has side effects. 4565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// For example, (f() && 0) can be folded, but it still has side effects. 4575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool HasSideEffects; 4585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// Diag - If this is non-null, it will be filled in with a stack of notes 4605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// indicating why evaluation failed (or why it failed to produce a constant 4615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// expression). 4625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// If the expression is unfoldable, the notes will indicate why it's not 4635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// foldable. If the expression is foldable, but not a constant expression, 4645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// the notes will describes why it isn't a constant expression. If the 4655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// expression *is* a constant expression, no notes will be produced. 4665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) llvm::SmallVectorImpl<PartialDiagnosticAt> *Diag; 4675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EvalStatus() : HasSideEffects(false), Diag(0) {} 4691e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) 4702a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // hasSideEffects - Return true if the evaluated expression has 4712a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // side effects. 4724e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) bool hasSideEffects() const { 4734e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) return HasSideEffects; 4741e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) } 4755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) }; 4765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// EvalResult is a struct with detailed info about an evaluated expression. 4785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) struct EvalResult : EvalStatus { 4795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// Val - This is the value the expression can be folded to. 4805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) APValue Val; 4815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // isGlobalLValue - Return true if the evaluated lvalue expression 4835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // is global. 4845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool isGlobalLValue() const; 4855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) }; 4865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// EvaluateAsRValue - Return true if this is a constant which we can fold to 4885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// an rvalue using any crazy technique (that has nothing to do with language 4895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// standards) that we want to, even if the expression has side-effects. If 4905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// this function returns true, it returns the folded constant in Result. If 4915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// the expression is a glvalue, an lvalue-to-rvalue conversion will be 4925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// applied. 4935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool EvaluateAsRValue(EvalResult &Result, const ASTContext &Ctx) const; 4945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// EvaluateAsBooleanCondition - Return true if this is a constant 4965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// which we we can fold and convert to a boolean condition using 4975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// any crazy technique that we want to, even if the expression has 4985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// side-effects. 4995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool EvaluateAsBooleanCondition(bool &Result, const ASTContext &Ctx) const; 5005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5012a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) enum SideEffectsKind { SE_NoSideEffects, SE_AllowSideEffects }; 5022a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 5032a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) /// EvaluateAsInt - Return true if this is a constant which we can fold and 5042a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) /// convert to an integer, using any crazy technique that we want to. 505c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) bool EvaluateAsInt(llvm::APSInt &Result, const ASTContext &Ctx, 5062a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) SideEffectsKind AllowSideEffects = SE_NoSideEffects) const; 5072a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 508c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) /// isEvaluatable - Call EvaluateAsRValue to see if this expression can be 509f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) /// constant folded without side-effects, but discard the result. 510c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) bool isEvaluatable(const ASTContext &Ctx) const; 511f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) 5125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// HasSideEffects - This routine returns true for all those expressions 5135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// which have any effect other than producing a value. Example is a function 5145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// call, volatile variable read, or throwing an exception. 5155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool HasSideEffects(const ASTContext &Ctx) const; 5165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief Determine whether this expression involves a call to any function 5185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// that is not trivial. 5195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool hasNonTrivialCall(ASTContext &Ctx); 5205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// EvaluateKnownConstInt - Call EvaluateAsRValue and return the folded 5225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// integer. This must be called on an expression that constant folds to an 5235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// integer. 5245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) llvm::APSInt EvaluateKnownConstInt(const ASTContext &Ctx) const; 5255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// EvaluateAsLValue - Evaluate an expression to see if we can fold it to an 5275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// lvalue with link time known address, with no side-effects. 5285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool EvaluateAsLValue(EvalResult &Result, const ASTContext &Ctx) const; 5295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// EvaluateAsInitializer - Evaluate an expression as if it were the 5315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// initializer of the given declaration. Returns true if the initializer 5325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// can be folded to a constant, and produces any relevant notes. In C++11, 5335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// notes will be produced if the expression is not a constant expression. 5345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool EvaluateAsInitializer(APValue &Result, const ASTContext &Ctx, 5355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const VarDecl *VD, 5365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) llvm::SmallVectorImpl<PartialDiagnosticAt> &Notes) const; 5375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief Enumeration used to describe the kind of Null pointer constant 5395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// returned from \c isNullPointerConstant(). 5405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) enum NullPointerConstantKind { 5415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief Expression is not a Null pointer constant. 5425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) NPCK_NotNull = 0, 5435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief Expression is a Null pointer constant built from a zero integer. 5455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) NPCK_ZeroInteger, 5465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief Expression is a C++0X nullptr. 5485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) NPCK_CXX0X_nullptr, 5495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief Expression is a GNU-style __null constant. 5515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) NPCK_GNUNull 5525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) }; 5535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief Enumeration used to describe how \c isNullPointerConstant() 5555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// should cope with value-dependent expressions. 5565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) enum NullPointerConstantValueDependence { 5575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief Specifies that the expression should never be value-dependent. 5585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) NPC_NeverValueDependent = 0, 5595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief Specifies that a value-dependent expression of integral or 5615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// dependent type should be considered a null pointer constant. 5625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) NPC_ValueDependentIsNull, 5635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief Specifies that a value-dependent expression should be considered 5655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// to never be a null pointer constant. 5665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) NPC_ValueDependentIsNotNull 5675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) }; 5685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// isNullPointerConstant - C99 6.3.2.3p3 - Test if this reduces down to 5705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// a Null pointer constant. The return value can further distinguish the 5715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// kind of NULL pointer constant that was detected. 5725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) NullPointerConstantKind isNullPointerConstant( 5735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ASTContext &Ctx, 5745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) NullPointerConstantValueDependence NPC) const; 5755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// isOBJCGCCandidate - Return true if this expression may be used in a read/ 5775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// write barrier. 5785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool isOBJCGCCandidate(ASTContext &Ctx) const; 5795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief Returns true if this expression is a bound member function. 5815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool isBoundMemberFunction(ASTContext &Ctx) const; 5825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief Given an expression of bound-member type, find the type 5845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// of the member. Returns null if this is an *overloaded* bound 5855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// member expression. 5865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static QualType findBoundMemberType(const Expr *expr); 5875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// IgnoreImpCasts - Skip past any implicit casts which might 5895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// surround this expression. Only skips ImplicitCastExprs. 5905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Expr *IgnoreImpCasts() LLVM_READONLY; 5915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// IgnoreImplicit - Skip past any implicit AST nodes which might 5935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// surround this expression. 5945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Expr *IgnoreImplicit() LLVM_READONLY { 5955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return cast<Expr>(Stmt::IgnoreImplicit()); 5965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 5975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const Expr *IgnoreImplicit() const LLVM_READONLY { 5995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return const_cast<Expr*>(this)->IgnoreImplicit(); 6005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 6015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// IgnoreParens - Ignore parentheses. If this Expr is a ParenExpr, return 6035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// its subexpression. If that subexpression is also a ParenExpr, 6045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// then this method recursively returns its subexpression, and so forth. 6055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// Otherwise, the method returns the current Expr. 6065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Expr *IgnoreParens() LLVM_READONLY; 607a3f7b4e666c476898878fa745f637129375cd889Ben Murdoch 608a3f7b4e666c476898878fa745f637129375cd889Ben Murdoch /// IgnoreParenCasts - Ignore parentheses and casts. Strip off any ParenExpr 609a3f7b4e666c476898878fa745f637129375cd889Ben Murdoch /// or CastExprs, returning their operand. 610a3f7b4e666c476898878fa745f637129375cd889Ben Murdoch Expr *IgnoreParenCasts() LLVM_READONLY; 6115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// IgnoreParenImpCasts - Ignore parentheses and implicit casts. Strip off 613a3f7b4e666c476898878fa745f637129375cd889Ben Murdoch /// any ParenExpr or ImplicitCastExprs, returning their operand. 6145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Expr *IgnoreParenImpCasts() LLVM_READONLY; 6155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// IgnoreConversionOperator - Ignore conversion operator. If this Expr is a 6175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// call to a conversion operator, return the argument. 6185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Expr *IgnoreConversionOperator() LLVM_READONLY; 6195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const Expr *IgnoreConversionOperator() const LLVM_READONLY { 6215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return const_cast<Expr*>(this)->IgnoreConversionOperator(); 6225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 6235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const Expr *IgnoreParenImpCasts() const LLVM_READONLY { 6255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return const_cast<Expr*>(this)->IgnoreParenImpCasts(); 6265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 6275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// Ignore parentheses and lvalue casts. Strip off any ParenExpr and 6295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// CastExprs that represent lvalue casts, returning their operand. 6305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Expr *IgnoreParenLValueCasts() LLVM_READONLY; 6315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const Expr *IgnoreParenLValueCasts() const LLVM_READONLY { 6335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return const_cast<Expr*>(this)->IgnoreParenLValueCasts(); 6345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 6355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// IgnoreParenNoopCasts - Ignore parentheses and casts that do not change the 6375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// value (including ptr->int casts of the same size). Strip off any 6387d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) /// ParenExpr or CastExprs, returning their operand. 6395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Expr *IgnoreParenNoopCasts(ASTContext &Ctx) LLVM_READONLY; 6405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// Ignore parentheses and derived-to-base casts. 6425d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) Expr *ignoreParenBaseCasts() LLVM_READONLY; 6435d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 6445d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) const Expr *ignoreParenBaseCasts() const LLVM_READONLY { 6455d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) return const_cast<Expr*>(this)->ignoreParenBaseCasts(); 6465d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) } 6475d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 6485d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) /// \brief Determine whether this expression is a default function argument. 6495d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) /// 6505d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) /// Default arguments are implicitly generated in the abstract syntax tree 6515d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) /// by semantic analysis for function calls, object constructions, etc. in 6525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// C++. Default arguments are represented by \c CXXDefaultArgExpr nodes; 6535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// this routine also looks through any implicit casts to determine whether 6545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// the expression is a default argument. 6555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool isDefaultArgument() const; 6565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 657010d83a9304c5a91596085d917d248abff47903aTorne (Richard Coles) /// \brief Determine whether the result of this expression is a 658010d83a9304c5a91596085d917d248abff47903aTorne (Richard Coles) /// temporary object of the given class type. 6595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool isTemporaryObject(ASTContext &Ctx, const CXXRecordDecl *TempTy) const; 6605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief Whether this expression is an implicit reference to 'this' in C++. 6625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool isImplicitCXXThis() const; 6635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6645d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) const Expr *IgnoreImpCasts() const LLVM_READONLY { 6655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return const_cast<Expr*>(this)->IgnoreImpCasts(); 6665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 6675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const Expr *IgnoreParens() const LLVM_READONLY { 6685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return const_cast<Expr*>(this)->IgnoreParens(); 6695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 6705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const Expr *IgnoreParenCasts() const LLVM_READONLY { 6715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return const_cast<Expr*>(this)->IgnoreParenCasts(); 6725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 6735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const Expr *IgnoreParenNoopCasts(ASTContext &Ctx) const LLVM_READONLY { 6745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return const_cast<Expr*>(this)->IgnoreParenNoopCasts(Ctx); 6755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 6765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static bool hasAnyTypeDependentArguments(llvm::ArrayRef<Expr *> Exprs); 6785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief For an expression of class type or pointer to class type, 6805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// return the most derived class decl the expression is known to refer to. 6815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// 6825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// If this expression is a cast, this method looks through it to find the 6835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// most derived decl that can be inferred from the expression. 6845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// This is valid because derived-to-base conversions have undefined 6855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// behavior if the object isn't dynamically of the derived type. 6865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const CXXRecordDecl *getBestDynamicClassType() const; 6875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static bool classof(const Stmt *T) { 6895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return T->getStmtClass() >= firstExprConstant && 6905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) T->getStmtClass() <= lastExprConstant; 6915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 6925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static bool classof(const Expr *) { return true; } 6935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 6945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)//===----------------------------------------------------------------------===// 6975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Primary Expressions. 6985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)//===----------------------------------------------------------------------===// 6995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 7005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// OpaqueValueExpr - An expression referring to an opaque object of a 701f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)/// fixed type and value class. These don't correspond to concrete 702f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)/// syntax; instead they're used to express operations (usually copy 7031e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles)/// operations) on values whose source is generally obvious from 7040529e5d033099cbfc42635f6f6183833b09dff6eBen Murdoch/// context. 705ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdochclass OpaqueValueExpr : public Expr { 7062a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) friend class ASTStmtReader; 707c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) Expr *SourceExpr; 7085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SourceLocation Loc; 7095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 7105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)public: 7112a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) OpaqueValueExpr(SourceLocation Loc, QualType T, ExprValueKind VK, 7125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ExprObjectKind OK = OK_Ordinary, 7135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Expr *SourceExpr = 0) 7145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : Expr(OpaqueValueExprClass, T, VK, OK, 7155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) T->isDependentType(), 7165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) T->isDependentType() || 7175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) (SourceExpr && SourceExpr->isValueDependent()), 7185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) T->isInstantiationDependentType(), 719868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) false), 7205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SourceExpr(SourceExpr), Loc(Loc) { 7215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 7225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 7235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// Given an expression which invokes a copy constructor --- i.e. a 7245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// CXXConstructExpr, possibly wrapped in an ExprWithCleanups --- 7255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// find the OpaqueValueExpr that's the source of the construction. 7265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static const OpaqueValueExpr *findInCopyConstruct(const Expr *expr); 7275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 7285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) explicit OpaqueValueExpr(EmptyShell Empty) 7295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : Expr(OpaqueValueExprClass, Empty) { } 7305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 7315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief Retrieve the location of this expression. 7325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SourceLocation getLocation() const { return Loc; } 7335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 7345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SourceRange getSourceRange() const LLVM_READONLY { 735a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) if (SourceExpr) return SourceExpr->getSourceRange(); 7365d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) return Loc; 7375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 7382a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) SourceLocation getExprLoc() const LLVM_READONLY { 7395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (SourceExpr) return SourceExpr->getExprLoc(); 7405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return Loc; 7415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 7425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 7435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) child_range children() { return child_range(); } 7445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 7455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// The source expression of an opaque value expression is the 7465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// expression which originally generated the value. This is 7475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// provided as a convenience for analyses that don't wish to 7485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// precisely model the execution behavior of the program. 7495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// 7505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// The source expression is typically set when building the 7515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// expression which binds the opaque value expression in the first 7525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// place. 7535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Expr *getSourceExpr() const { return SourceExpr; } 7545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 7555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static bool classof(const Stmt *T) { 7565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return T->getStmtClass() == OpaqueValueExprClass; 7572a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 7582a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) static bool classof(const OpaqueValueExpr *) { return true; } 7595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 7602a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 7615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// \brief A reference to a declared variable, function, enum, etc. 7625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// [C99 6.5.1p2] 763a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)/// 7645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// This encodes all the information about how a declaration is referenced 765bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdoch/// within an expression. 766bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdoch/// 767bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdoch/// There are several optional constructs attached to DeclRefExprs only when 768bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdoch/// they apply in order to conserve memory. These are laid out past the end of 7695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// the object, and flags in the DeclRefExprBitfield track whether they exist: 7705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// 771a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)/// DeclRefExprBits.HasQualifier: 7725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// Specifies when this declaration reference expression has a C++ 7735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// nested-name-specifier. 774a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)/// DeclRefExprBits.HasFoundDecl: 7755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// Specifies when this declaration reference expression has a record of 7765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// a NamedDecl (different from the referenced ValueDecl) which was found 777a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)/// during name lookup and/or overload resolution. 7785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// DeclRefExprBits.HasTemplateKWAndArgsInfo: 7795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// Specifies when this declaration reference expression has an explicit 780a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)/// C++ template keyword and/or template argument list. 7815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// DeclRefExprBits.RefersToEnclosingLocal 7825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// Specifies when this declaration reference expression (validly) 783a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)/// refers to a local variable from a different function. 7845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class DeclRefExpr : public Expr { 7855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief The declaration that we are referencing. 786a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) ValueDecl *D; 7875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 7885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief The location of the declaration name itself. 7895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SourceLocation Loc; 7905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 7915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief Provides source/type location info for the declaration name 7925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// embedded in D. 7935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DeclarationNameLoc DNLoc; 7945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 7955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief Helper to retrieve the optional NestedNameSpecifierLoc. 7961e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) NestedNameSpecifierLoc &getInternalQualifierLoc() { 7975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) assert(hasQualifier()); 7985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return *reinterpret_cast<NestedNameSpecifierLoc *>(this + 1); 7995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 8005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 8015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief Helper to retrieve the optional NestedNameSpecifierLoc. 8025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const NestedNameSpecifierLoc &getInternalQualifierLoc() const { 8035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return const_cast<DeclRefExpr *>(this)->getInternalQualifierLoc(); 8045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 8055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 8065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief Test whether there is a distinct FoundDecl attached to the end of 8075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// this DRE. 8085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool hasFoundDecl() const { return DeclRefExprBits.HasFoundDecl; } 8095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 8105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief Helper to retrieve the optional NamedDecl through which this 8115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// reference occured. 8125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) NamedDecl *&getInternalFoundDecl() { 8132a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) assert(hasFoundDecl()); 8142a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (hasQualifier()) 8152a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return *reinterpret_cast<NamedDecl **>(&getInternalQualifierLoc() + 1); 8162a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return *reinterpret_cast<NamedDecl **>(this + 1); 8175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 8185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 81990dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) /// \brief Helper to retrieve the optional NamedDecl through which this 8205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// reference occured. 8212a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) NamedDecl *getInternalFoundDecl() const { 8225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return const_cast<DeclRefExpr *>(this)->getInternalFoundDecl(); 823424c4d7b64af9d0d8fd9624f381f469654d5e3d2Torne (Richard Coles) } 82490dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) 8250529e5d033099cbfc42635f6f6183833b09dff6eBen Murdoch DeclRefExpr(ASTContext &Ctx, 8265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) NestedNameSpecifierLoc QualifierLoc, 8271e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) SourceLocation TemplateKWLoc, 8281e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) ValueDecl *D, bool refersToEnclosingLocal, 8291e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) const DeclarationNameInfo &NameInfo, 830c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) NamedDecl *FoundD, 8315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const TemplateArgumentListInfo *TemplateArgs, 8325d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) QualType T, ExprValueKind VK); 8335d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 8345d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) /// \brief Construct an empty declaration reference expression. 835a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) explicit DeclRefExpr(EmptyShell Empty) 8362a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) : Expr(DeclRefExprClass, Empty) { } 8372a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 8382a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) /// \brief Computes the type- and value-dependence flags for this 839a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) /// declaration reference expression. 840a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) void computeDependence(ASTContext &C); 8415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 8425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)public: 8435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DeclRefExpr(ValueDecl *D, bool refersToEnclosingLocal, QualType T, 8445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ExprValueKind VK, SourceLocation L, 8455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const DeclarationNameLoc &LocInfo = DeclarationNameLoc()) 8465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : Expr(DeclRefExprClass, T, VK, OK_Ordinary, false, false, false, false), 8475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) D(D), Loc(L), DNLoc(LocInfo) { 8485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DeclRefExprBits.HasQualifier = 0; 8495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DeclRefExprBits.HasTemplateKWAndArgsInfo = 0; 8505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DeclRefExprBits.HasFoundDecl = 0; 8515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DeclRefExprBits.HadMultipleCandidates = 0; 8525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DeclRefExprBits.RefersToEnclosingLocal = refersToEnclosingLocal; 8535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) computeDependence(D->getASTContext()); 854a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) } 8555d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 8565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static DeclRefExpr *Create(ASTContext &Context, 8575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) NestedNameSpecifierLoc QualifierLoc, 8585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SourceLocation TemplateKWLoc, 8595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ValueDecl *D, 8605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool isEnclosingLocal, 8615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SourceLocation NameLoc, 8625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QualType T, ExprValueKind VK, 8635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) NamedDecl *FoundD = 0, 8645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const TemplateArgumentListInfo *TemplateArgs = 0); 8655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 8665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static DeclRefExpr *Create(ASTContext &Context, 8675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) NestedNameSpecifierLoc QualifierLoc, 8685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SourceLocation TemplateKWLoc, 8695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ValueDecl *D, 8705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool isEnclosingLocal, 8715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const DeclarationNameInfo &NameInfo, 8725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QualType T, ExprValueKind VK, 8735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) NamedDecl *FoundD = 0, 8745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const TemplateArgumentListInfo *TemplateArgs = 0); 8755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 8765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief Construct an empty declaration reference expression. 8775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static DeclRefExpr *CreateEmpty(ASTContext &Context, 8785d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) bool HasQualifier, 879a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) bool HasFoundDecl, 8805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool HasTemplateKWAndArgsInfo, 8815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) unsigned NumTemplateArgs); 8825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 8835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ValueDecl *getDecl() { return D; } 8845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const ValueDecl *getDecl() const { return D; } 8855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void setDecl(ValueDecl *NewD) { D = NewD; } 8865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 8875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DeclarationNameInfo getNameInfo() const { 8885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return DeclarationNameInfo(getDecl()->getDeclName(), Loc, DNLoc); 8895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 8905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 8915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SourceLocation getLocation() const { return Loc; } 8925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void setLocation(SourceLocation L) { Loc = L; } 8935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SourceRange getSourceRange() const LLVM_READONLY; 8945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SourceLocation getLocStart() const LLVM_READONLY; 8955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SourceLocation getLocEnd() const LLVM_READONLY; 8965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 8975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief Determine whether this declaration reference was preceded by a 898c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) /// C++ nested-name-specifier, e.g., \c N::foo. 899c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) bool hasQualifier() const { return DeclRefExprBits.HasQualifier; } 900c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 9015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief If the name was qualified, retrieves the nested-name-specifier 9025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// that precedes the name. Otherwise, returns NULL. 903a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) NestedNameSpecifier *getQualifier() const { 9045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!hasQualifier()) 9055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return 0; 9065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 9075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return getInternalQualifierLoc().getNestedNameSpecifier(); 9085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 9095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 9105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief If the name was qualified, retrieves the nested-name-specifier 9115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// that precedes the name, with source-location information. 9125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) NestedNameSpecifierLoc getQualifierLoc() const { 9135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!hasQualifier()) 9145d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) return NestedNameSpecifierLoc(); 9155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 9165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return getInternalQualifierLoc(); 9175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 9185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 9195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief Get the NamedDecl through which this reference occured. 9205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// 9215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// This Decl may be different from the ValueDecl actually referred to in the 9221e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) /// presence of using declarations, etc. It always returns non-NULL, and may 9235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// simple return the ValueDecl when appropriate. 924a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) NamedDecl *getFoundDecl() { 9255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return hasFoundDecl() ? getInternalFoundDecl() : D; 9265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 9275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 9285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief Get the NamedDecl through which this reference occurred. 9295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// See non-const variant. 9305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const NamedDecl *getFoundDecl() const { 9315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return hasFoundDecl() ? getInternalFoundDecl() : D; 9325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 9335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 9345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool hasTemplateKWAndArgsInfo() const { 9355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return DeclRefExprBits.HasTemplateKWAndArgsInfo; 9365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 937a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) 9385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief Return the optional template keyword and arguments info. 9395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ASTTemplateKWAndArgsInfo *getTemplateKWAndArgsInfo() { 9405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!hasTemplateKWAndArgsInfo()) 9415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return 0; 942a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) 9435d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) if (hasFoundDecl()) 9445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return reinterpret_cast<ASTTemplateKWAndArgsInfo *>( 9455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) &getInternalFoundDecl() + 1); 9465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 9475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (hasQualifier()) 9485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return reinterpret_cast<ASTTemplateKWAndArgsInfo *>( 9495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) &getInternalQualifierLoc() + 1); 9505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 9515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return reinterpret_cast<ASTTemplateKWAndArgsInfo *>(this + 1); 9525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 9535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 9545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief Return the optional template keyword and arguments info. 9555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const ASTTemplateKWAndArgsInfo *getTemplateKWAndArgsInfo() const { 9565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return const_cast<DeclRefExpr*>(this)->getTemplateKWAndArgsInfo(); 9575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 958868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) 9595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief Retrieve the location of the template keyword preceding 9605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// this name, if any. 9615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SourceLocation getTemplateKeywordLoc() const { 9625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!hasTemplateKWAndArgsInfo()) return SourceLocation(); 9635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return getTemplateKWAndArgsInfo()->getTemplateKeywordLoc(); 9645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 9655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 9665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief Retrieve the location of the left angle bracket starting the 9675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// explicit template argument list following the name, if any. 9685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SourceLocation getLAngleLoc() const { 9695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!hasTemplateKWAndArgsInfo()) return SourceLocation(); 9705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return getTemplateKWAndArgsInfo()->LAngleLoc; 9715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 9725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 9735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief Retrieve the location of the right angle bracket ending the 9745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// explicit template argument list following the name, if any. 9755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SourceLocation getRAngleLoc() const { 9765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!hasTemplateKWAndArgsInfo()) return SourceLocation(); 9775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return getTemplateKWAndArgsInfo()->RAngleLoc; 978bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdoch } 979bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdoch 9805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief Determines whether the name in this declaration reference 9815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// was preceded by the template keyword. 9825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool hasTemplateKeyword() const { return getTemplateKeywordLoc().isValid(); } 9835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 9845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief Determines whether this declaration reference was followed by an 9855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// explicit template argument list. 9865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool hasExplicitTemplateArgs() const { return getLAngleLoc().isValid(); } 9875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 9885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief Retrieve the explicit template argument list that followed the 989a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) /// member template name. 9905d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) ASTTemplateArgumentListInfo &getExplicitTemplateArgs() { 9915d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) assert(hasExplicitTemplateArgs()); 9925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return *getTemplateKWAndArgsInfo(); 9935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 9942a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 9952a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) /// \brief Retrieve the explicit template argument list that followed the 9962a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) /// member template name. 9972a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) const ASTTemplateArgumentListInfo &getExplicitTemplateArgs() const { 9982a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return const_cast<DeclRefExpr *>(this)->getExplicitTemplateArgs(); 999a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) } 10005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 10015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief Retrieves the optional explicit template arguments. 10025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// This points to the same data as getExplicitTemplateArgs(), but 10035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// returns null if there are no explicit template arguments. 10045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const ASTTemplateArgumentListInfo *getOptionalExplicitTemplateArgs() const { 10055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!hasExplicitTemplateArgs()) return 0; 10065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return &getExplicitTemplateArgs(); 10075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 10085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 10095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief Copies the template arguments (if present) into the given 10105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// structure. 10115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void copyTemplateArgumentsInto(TemplateArgumentListInfo &List) const { 10125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (hasExplicitTemplateArgs()) 10135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) getExplicitTemplateArgs().copyInto(List); 10145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 10155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 10165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief Retrieve the template arguments provided as part of this 10175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// template-id. 10185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const TemplateArgumentLoc *getTemplateArgs() const { 10195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!hasExplicitTemplateArgs()) 10205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return 0; 10215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 10225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return getExplicitTemplateArgs().getTemplateArgs(); 10235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 10245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 10255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief Retrieve the number of template arguments provided as part of this 10265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// template-id. 10275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) unsigned getNumTemplateArgs() const { 10285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!hasExplicitTemplateArgs()) 10295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return 0; 10305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 10315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return getExplicitTemplateArgs().NumTemplateArgs; 10325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1033a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) 10345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief Returns true if this expression refers to a function that 10355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// was resolved from an overloaded set having size greater than 1. 10365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool hadMultipleCandidates() const { 10375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return DeclRefExprBits.HadMultipleCandidates; 10385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1039c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) /// \brief Sets the flag telling whether this expression refers to 1040c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) /// a function that was resolved from an overloaded set having size 1041c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) /// greater than 1. 1042c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) void setHadMultipleCandidates(bool V = true) { 1043c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) DeclRefExprBits.HadMultipleCandidates = V; 1044c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) } 1045c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 1046c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) /// Does this DeclRefExpr refer to a local declaration from an 1047c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) /// enclosing function scope? 1048c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) bool refersToEnclosingLocal() const { 10495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return DeclRefExprBits.RefersToEnclosingLocal; 10505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 10515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 10525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static bool classof(const Stmt *T) { 1053a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) return T->getStmtClass() == DeclRefExprClass; 10545d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) } 10555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static bool classof(const DeclRefExpr *) { return true; } 10565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 10575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Iterators 10585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) child_range children() { return child_range(); } 10595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 10605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) friend class ASTStmtReader; 1061a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) friend class ASTStmtWriter; 10625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 10635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 10645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// PredefinedExpr - [C99 6.4.2.2] - A predefined identifier such as __func__. 10655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class PredefinedExpr : public Expr { 10665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)public: 10675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) enum IdentType { 10685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Func, 10695d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) Function, 10705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) LFunction, // Same as Function, but as wide string. 10715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PrettyFunction, 10725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// PrettyFunctionNoVirtual - The same as PrettyFunction, except that the 10735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// 'virtual' keyword is omitted for virtual member functions. 10745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PrettyFunctionNoVirtual 10755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) }; 10765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 10775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)private: 10785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SourceLocation Loc; 10795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IdentType Type; 10805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)public: 1081a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) PredefinedExpr(SourceLocation l, QualType type, IdentType IT) 10825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : Expr(PredefinedExprClass, type, VK_LValue, OK_Ordinary, 1083a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) type->isDependentType(), type->isDependentType(), 10845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) type->isInstantiationDependentType(), 10855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /*ContainsUnexpandedParameterPack=*/false), 10865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Loc(l), Type(IT) {} 10875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 10885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief Construct an empty predefined expression. 10895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) explicit PredefinedExpr(EmptyShell Empty) 10905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : Expr(PredefinedExprClass, Empty) { } 10915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 10925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IdentType getIdentType() const { return Type; } 10935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void setIdentType(IdentType IT) { Type = IT; } 10945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 10955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SourceLocation getLocation() const { return Loc; } 10965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void setLocation(SourceLocation L) { Loc = L; } 10972a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 10985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static std::string ComputeName(IdentType IT, const Decl *CurrentDecl); 10995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 11005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SourceRange getSourceRange() const LLVM_READONLY { return SourceRange(Loc); } 11015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1102a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) static bool classof(const Stmt *T) { 11035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return T->getStmtClass() == PredefinedExprClass; 11045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 11055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static bool classof(const PredefinedExpr *) { return true; } 1106a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) 11075d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // Iterators 11085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) child_range children() { return child_range(); } 11095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 11105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 11115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// \brief Used by IntegerLiteral/FloatingLiteral to store the numeric without 1112a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)/// leaking memory. 11135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// 11145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// For large floats/integers, APFloat/APInt will allocate memory from the heap 11155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// to represent these numbers. Unfortunately, when we use a BumpPtrAllocator 11165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// to allocate IntegerLiteral/FloatingLiteral nodes the memory associated with 11175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// the APFloat/APInt values will never get freed. APNumericStorage uses 11185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// ASTContext's allocator for memory allocation. 11195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class APNumericStorage { 11205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) union { 11215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) uint64_t VAL; ///< Used to store the <= 64 bits integer value. 11225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) uint64_t *pVal; ///< Used to store the >64 bits integer value. 11235d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) }; 11245d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) unsigned BitWidth; 11255d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 11265d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) bool hasAllocation() const { return llvm::APInt::getNumWords(BitWidth) > 1; } 11275d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 11285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) APNumericStorage(const APNumericStorage&); // do not implement 11295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) APNumericStorage& operator=(const APNumericStorage&); // do not implement 11305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 11315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)protected: 11325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) APNumericStorage() : VAL(0), BitWidth(0) { } 1133a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) 11345d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) llvm::APInt getIntValue() const { 11355d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) unsigned NumWords = llvm::APInt::getNumWords(BitWidth); 11365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (NumWords > 1) 11375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return llvm::APInt(BitWidth, NumWords, pVal); 11385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) else 11395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return llvm::APInt(BitWidth, VAL); 1140a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) } 11415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void setIntValue(ASTContext &C, const llvm::APInt &Val); 11425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 11435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 11445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class APIntStorage : private APNumericStorage { 11455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)public: 11465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) llvm::APInt getValue() const { return getIntValue(); } 11475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void setValue(ASTContext &C, const llvm::APInt &Val) { setIntValue(C, Val); } 11485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 11495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 11505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class APFloatStorage : private APNumericStorage { 11515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)public: 11525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) llvm::APFloat getValue(bool IsIEEE) const { 11532a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return llvm::APFloat(getIntValue(), IsIEEE); 11545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 11555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void setValue(ASTContext &C, const llvm::APFloat &Val) { 11565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) setIntValue(C, Val.bitcastToAPInt()); 11575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1158a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)}; 11595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 11605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class IntegerLiteral : public Expr, public APIntStorage { 11615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SourceLocation Loc; 1162a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) 11635d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) /// \brief Construct an empty integer literal. 11647dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch explicit IntegerLiteral(EmptyShell Empty) 11657dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch : Expr(IntegerLiteralClass, Empty) { } 11665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 11672a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)public: 11685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // type should be IntTy, LongTy, LongLongTy, UnsignedIntTy, UnsignedLongTy, 11695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // or UnsignedLongLongTy 11705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IntegerLiteral(ASTContext &C, const llvm::APInt &V, QualType type, 11715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SourceLocation l); 11725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 11735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief Returns a new integer literal with value 'V' and type 'type'. 11745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \param type - either IntTy, LongTy, LongLongTy, UnsignedIntTy, 11755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// UnsignedLongTy, or UnsignedLongLongTy which should match the size of V 11765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \param V - the value that the returned integer literal contains. 11775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static IntegerLiteral *Create(ASTContext &C, const llvm::APInt &V, 11785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QualType type, SourceLocation l); 11795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief Returns a new empty integer literal. 11805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static IntegerLiteral *Create(ASTContext &C, EmptyShell Empty); 11815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 11825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SourceRange getSourceRange() const LLVM_READONLY { return SourceRange(Loc); } 11835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1184a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) /// \brief Retrieve the location of the literal. 11855d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) SourceLocation getLocation() const { return Loc; } 11865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 11875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void setLocation(SourceLocation Location) { Loc = Location; } 11885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 11895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static bool classof(const Stmt *T) { 11905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return T->getStmtClass() == IntegerLiteralClass; 11915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 11925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static bool classof(const IntegerLiteral *) { return true; } 11935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1194a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) // Iterators 11955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) child_range children() { return child_range(); } 11965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 11975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 11985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class CharacterLiteral : public Expr { 11995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)public: 12005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) enum CharacterKind { 12015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Ascii, 12025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Wide, 12035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) UTF16, 12045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) UTF32 12052a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) }; 12065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 12075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)private: 12082a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) unsigned Value; 12092a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) SourceLocation Loc; 12102a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)public: 12115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // type should be IntTy 12125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CharacterLiteral(unsigned value, CharacterKind kind, QualType type, 12135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SourceLocation l) 12145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : Expr(CharacterLiteralClass, type, VK_RValue, OK_Ordinary, false, false, 12155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) false, false), 12165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Value(value), Loc(l) { 12175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CharacterLiteralBits.Kind = kind; 12185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 12195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 12205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief Construct an empty character literal. 12215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CharacterLiteral(EmptyShell Empty) : Expr(CharacterLiteralClass, Empty) { } 12225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 12235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SourceLocation getLocation() const { return Loc; } 1224bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdoch CharacterKind getKind() const { 1225bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdoch return static_cast<CharacterKind>(CharacterLiteralBits.Kind); 1226bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdoch } 12275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 12285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SourceRange getSourceRange() const LLVM_READONLY { return SourceRange(Loc); } 1229bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdoch 12305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) unsigned getValue() const { return Value; } 12315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 12325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void setLocation(SourceLocation Location) { Loc = Location; } 12335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void setKind(CharacterKind kind) { CharacterLiteralBits.Kind = kind; } 12345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void setValue(unsigned Val) { Value = Val; } 12355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 12365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static bool classof(const Stmt *T) { 12375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return T->getStmtClass() == CharacterLiteralClass; 12385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 12395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static bool classof(const CharacterLiteral *) { return true; } 12405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 12415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Iterators 12425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) child_range children() { return child_range(); } 12435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 12445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1245ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdochclass FloatingLiteral : public Expr, private APFloatStorage { 1246ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch SourceLocation Loc; 1247ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch 1248ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch FloatingLiteral(ASTContext &C, const llvm::APFloat &V, bool isexact, 1249ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch QualType Type, SourceLocation L); 1250ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch 1251ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch /// \brief Construct an empty floating-point literal. 1252ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch explicit FloatingLiteral(ASTContext &C, EmptyShell Empty); 12535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 12545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)public: 12555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static FloatingLiteral *Create(ASTContext &C, const llvm::APFloat &V, 12565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool isexact, QualType Type, SourceLocation L); 12575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static FloatingLiteral *Create(ASTContext &C, EmptyShell Empty); 12585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 12591e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) llvm::APFloat getValue() const { 12605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return APFloatStorage::getValue(FloatingLiteralBits.IsIEEE); 12615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 12625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void setValue(ASTContext &C, const llvm::APFloat &Val) { 12635d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) APFloatStorage::setValue(C, Val); 12645d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) } 1265868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) 1266f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) bool isExact() const { return FloatingLiteralBits.IsExact; } 1267868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) void setExact(bool E) { FloatingLiteralBits.IsExact = E; } 12685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 12695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// getValueAsApproximateDouble - This returns the value as an inaccurate 12705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// double. Note that this may cause loss of precision, but is useful for 12715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// debugging dumps, etc. 12725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) double getValueAsApproximateDouble() const; 12735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 12745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SourceLocation getLocation() const { return Loc; } 12755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void setLocation(SourceLocation L) { Loc = L; } 12765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1277868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) SourceRange getSourceRange() const LLVM_READONLY { return SourceRange(Loc); } 1278868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) 1279868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) static bool classof(const Stmt *T) { 12801e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) return T->getStmtClass() == FloatingLiteralClass; 12815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 12825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static bool classof(const FloatingLiteral *) { return true; } 1283f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) 12845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Iterators 1285868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) child_range children() { return child_range(); } 1286868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)}; 1287868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) 12885d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)/// ImaginaryLiteral - We support imaginary integer and floating point literals, 12895d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)/// like "1.0i". We represent these as a wrapper around FloatingLiteral and 12905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// IntegerLiteral classes. Instances of this class always have a Complex type 12915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// whose element type matches the subexpression. 1292868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)/// 1293868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)class ImaginaryLiteral : public Expr { 1294868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) Stmt *Val; 12955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)public: 12965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ImaginaryLiteral(Expr *val, QualType Ty) 12975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : Expr(ImaginaryLiteralClass, Ty, VK_RValue, OK_Ordinary, false, false, 12985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) false, false), 12995d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) Val(val) {} 13005d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 13015d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) /// \brief Build an empty imaginary literal. 13025d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) explicit ImaginaryLiteral(EmptyShell Empty) 13035d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) : Expr(ImaginaryLiteralClass, Empty) { } 13045d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 13055d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) const Expr *getSubExpr() const { return cast<Expr>(Val); } 13065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Expr *getSubExpr() { return cast<Expr>(Val); } 13075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void setSubExpr(Expr *E) { Val = E; } 13085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 13095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SourceRange getSourceRange() const LLVM_READONLY { return Val->getSourceRange(); } 13105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static bool classof(const Stmt *T) { 13111e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) return T->getStmtClass() == ImaginaryLiteralClass; 13121e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) } 13131e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) static bool classof(const ImaginaryLiteral *) { return true; } 13145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 13155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Iterators 13165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) child_range children() { return child_range(&Val, &Val+1); } 13175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 13181e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) 13195c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu/// StringLiteral - This represents a string literal expression, e.g. "foo" 13205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// or L"bar" (wide strings). The actual string is returned by getStrData() 13215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// is NOT null-terminated, and the length of the string is determined by 13225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// calling getByteLength(). The C type for a string is always a 13235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// ConstantArrayType. In C++, the char type is const qualified, in C it is 13241e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles)/// not. 13251e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles)/// 13265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// Note that strings in C can be formed by concatenation of multiple string 13275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// literal pptokens in translation phase #6. This keeps track of the locations 13285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// of each of these pieces. 1329f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)/// 1330868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)/// Strings in C can also be truncated and extended by assigning into arrays, 1331868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)/// e.g. with constructs like: 1332868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)/// char X[2] = "foobar"; 1333868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)/// In this case, getByteLength() will return 6, but the string literal will 1334868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)/// have type "char[2]". 13352a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)class StringLiteral : public Expr { 1336868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)public: 1337868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) enum StringKind { 1338868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) Ascii, 1339868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) Wide, 1340868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) UTF8, 1341868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) UTF16, 1342868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) UTF32 1343868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) }; 1344868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) 1345868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)private: 1346868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) friend class ASTStmtReader; 1347868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) 1348868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) union { 1349868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) const char *asChar; 1350f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) const uint16_t *asUInt16; 1351f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) const uint32_t *asUInt32; 1352868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) } StrData; 1353868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) unsigned Length; 1354868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) unsigned CharByteWidth : 4; 13552a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) unsigned Kind : 3; 13562a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) unsigned IsPascal : 1; 13572a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) unsigned NumConcatenated; 13582a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) SourceLocation TokLocs[1]; 13592a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 13602a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) StringLiteral(QualType Ty) : 13614e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) Expr(StringLiteralClass, Ty, VK_LValue, OK_Ordinary, false, false, false, 13624e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) false) {} 13631e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) 13642a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) static int mapCharByteWidth(TargetInfo const &target,StringKind k); 13652a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 13662a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)public: 1367f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) /// This is the "fully general" constructor that allows representation of 1368868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) /// strings formed from multiple concatenated tokens. 1369f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) static StringLiteral *Create(ASTContext &C, StringRef Str, StringKind Kind, 13705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool Pascal, QualType Ty, 1371868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) const SourceLocation *Loc, unsigned NumStrs); 1372868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) 1373868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) /// Simple constructor for string literals made from one token. 1374868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) static StringLiteral *Create(ASTContext &C, StringRef Str, StringKind Kind, 1375868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) bool Pascal, QualType Ty, 1376868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) SourceLocation Loc) { 13775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return Create(C, Str, Kind, Pascal, Ty, &Loc, 1); 13785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 13792a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 1380c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) /// \brief Construct an empty string literal. 13812a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) static StringLiteral *CreateEmpty(ASTContext &C, unsigned NumStrs); 13822a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 13835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) StringRef getString() const { 1384ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch assert(CharByteWidth==1 13855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) && "This function is used in places that assume strings use char"); 13865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return StringRef(StrData.asChar, getByteLength()); 13875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 13885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 13895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// Allow access to clients that need the byte representation, such as 13905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// ASTWriterStmt::VisitStringLiteral(). 13915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) StringRef getBytes() const { 1392ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch // FIXME: StringRef may not be the right type to use as a result for this. 1393ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch if (CharByteWidth == 1) 1394ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch return StringRef(StrData.asChar, getByteLength()); 1395ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch if (CharByteWidth == 4) 1396ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch return StringRef(reinterpret_cast<const char*>(StrData.asUInt32), 1397ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch getByteLength()); 13985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) assert(CharByteWidth == 2 && "unsupported CharByteWidth"); 13995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return StringRef(reinterpret_cast<const char*>(StrData.asUInt16), 14005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) getByteLength()); 14015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 14025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 14035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void outputString(raw_ostream &OS); 14045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 14055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) uint32_t getCodeUnit(size_t i) const { 14065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) assert(i < Length && "out of bounds access"); 14075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (CharByteWidth == 1) 14080529e5d033099cbfc42635f6f6183833b09dff6eBen Murdoch return static_cast<unsigned char>(StrData.asChar[i]); 14090529e5d033099cbfc42635f6f6183833b09dff6eBen Murdoch if (CharByteWidth == 4) 14105c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu return StrData.asUInt32[i]; 14115c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu assert(CharByteWidth == 2 && "unsupported CharByteWidth"); 14120529e5d033099cbfc42635f6f6183833b09dff6eBen Murdoch return StrData.asUInt16[i]; 14130529e5d033099cbfc42635f6f6183833b09dff6eBen Murdoch } 14145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1415ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch unsigned getByteLength() const { return CharByteWidth*Length; } 1416ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch unsigned getLength() const { return Length; } 1417ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch unsigned getCharByteWidth() const { return CharByteWidth; } 1418ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch 1419ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch /// \brief Sets the string data to the given string data. 1420ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch void setString(ASTContext &C, StringRef Str, 1421ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch StringKind Kind, bool IsPascal); 1422ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch 1423ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch StringKind getKind() const { return static_cast<StringKind>(Kind); } 1424ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch 1425ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch 1426ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch bool isAscii() const { return Kind == Ascii; } 1427ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch bool isWide() const { return Kind == Wide; } 1428ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch bool isUTF8() const { return Kind == UTF8; } 1429ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch bool isUTF16() const { return Kind == UTF16; } 1430ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch bool isUTF32() const { return Kind == UTF32; } 1431ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch bool isPascal() const { return IsPascal; } 1432ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch 1433ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch bool containsNonAsciiOrNull() const { 1434ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch StringRef Str = getString(); 1435ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch for (unsigned i = 0, e = Str.size(); i != e; ++i) 1436ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch if (!isascii(Str[i]) || !Str[i]) 1437ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch return true; 1438bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdoch return false; 1439ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch } 1440ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch 1441ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch /// getNumConcatenated - Get the number of string literal tokens that were 1442ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch /// concatenated in translation phase #6 to form this string literal. 1443ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch unsigned getNumConcatenated() const { return NumConcatenated; } 1444ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch 1445ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch SourceLocation getStrTokenLoc(unsigned TokNum) const { 1446ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch assert(TokNum < NumConcatenated && "Invalid tok number"); 1447ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch return TokLocs[TokNum]; 1448ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch } 1449ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch void setStrTokenLoc(unsigned TokNum, SourceLocation L) { 1450ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch assert(TokNum < NumConcatenated && "Invalid tok number"); 1451ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch TokLocs[TokNum] = L; 1452ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch } 1453ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch 14545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// getLocationOfByte - Return a source location that points to the specified 14555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// byte of this string literal. 14565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// 14575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// Strings are amazingly complex. They can be formed from multiple tokens 14585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// and can have escape sequences in them in addition to the usual trigraph 14595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// and escaped newline business. This routine handles this complexity. 14604e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) /// 14614e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) SourceLocation getLocationOfByte(unsigned ByteNo, const SourceManager &SM, 14624e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) const LangOptions &Features, 14634e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) const TargetInfo &Target) const; 14645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 14655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) typedef const SourceLocation *tokloc_iterator; 14665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) tokloc_iterator tokloc_begin() const { return TokLocs; } 14675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) tokloc_iterator tokloc_end() const { return TokLocs+NumConcatenated; } 14685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 14695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SourceRange getSourceRange() const LLVM_READONLY { 14705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return SourceRange(TokLocs[0], TokLocs[NumConcatenated-1]); 14715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 14725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static bool classof(const Stmt *T) { 14735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return T->getStmtClass() == StringLiteralClass; 14745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 14755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static bool classof(const StringLiteral *) { return true; } 14765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 14775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Iterators 14785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) child_range children() { return child_range(); } 14795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 14805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 14815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// ParenExpr - This represents a parethesized expression, e.g. "(1)". This 14821e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles)/// AST node is only formed if full location information is requested. 14835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class ParenExpr : public Expr { 14845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SourceLocation L, R; 14855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Stmt *Val; 14865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)public: 14875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ParenExpr(SourceLocation l, SourceLocation r, Expr *val) 14885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : Expr(ParenExprClass, val->getType(), 14895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) val->getValueKind(), val->getObjectKind(), 14905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) val->isTypeDependent(), val->isValueDependent(), 14915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) val->isInstantiationDependent(), 14925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) val->containsUnexpandedParameterPack()), 14935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) L(l), R(r), Val(val) {} 14945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 14955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief Construct an empty parenthesized expression. 14965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) explicit ParenExpr(EmptyShell Empty) 14975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : Expr(ParenExprClass, Empty) { } 14985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 14995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const Expr *getSubExpr() const { return cast<Expr>(Val); } 15005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Expr *getSubExpr() { return cast<Expr>(Val); } 15015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void setSubExpr(Expr *E) { Val = E; } 15025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 15035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SourceRange getSourceRange() const LLVM_READONLY { return SourceRange(L, R); } 15045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 15055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief Get the location of the left parentheses '('. 15065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SourceLocation getLParen() const { return L; } 15075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void setLParen(SourceLocation Loc) { L = Loc; } 15085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 15095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief Get the location of the right parentheses ')'. 15105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SourceLocation getRParen() const { return R; } 15115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void setRParen(SourceLocation Loc) { R = Loc; } 15125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 15135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static bool classof(const Stmt *T) { 15145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return T->getStmtClass() == ParenExprClass; 15155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 15165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static bool classof(const ParenExpr *) { return true; } 15175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 15185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Iterators 15195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) child_range children() { return child_range(&Val, &Val+1); } 15205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 15215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 15225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 15235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// UnaryOperator - This represents the unary-expression's (except sizeof and 15245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// alignof), the postinc/postdec operators from postfix-expression, and various 15255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// extensions. 15265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// 15275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// Notes on various nodes: 15285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// 15295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// Real/Imag - These return the real/imag part of a complex operand. If 15305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// applied to a non-complex value, the former returns its operand and the 15315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// later returns zero in the type of the operand. 15325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// 15335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class UnaryOperator : public Expr { 15345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)public: 15351e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) typedef UnaryOperatorKind Opcode; 15365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 15375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)private: 15385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) unsigned Opc : 5; 15395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SourceLocation Loc; 15405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Stmt *Val; 1541a93a17c8d99d686bd4a1511e5504e5e6cc9fcadfTorne (Richard Coles)public: 15425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 15435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) UnaryOperator(Expr *input, Opcode opc, QualType type, 15445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ExprValueKind VK, ExprObjectKind OK, SourceLocation l) 15455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : Expr(UnaryOperatorClass, type, VK, OK, 15465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) input->isTypeDependent() || type->isDependentType(), 15475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) input->isValueDependent(), 15485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) (input->isInstantiationDependent() || 15495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) type->isInstantiationDependentType()), 15505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) input->containsUnexpandedParameterPack()), 15515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Opc(opc), Loc(l), Val(input) {} 15525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 15535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief Build an empty unary operator. 15545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) explicit UnaryOperator(EmptyShell Empty) 15555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : Expr(UnaryOperatorClass, Empty), Opc(UO_AddrOf) { } 15565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 15575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Opcode getOpcode() const { return static_cast<Opcode>(Opc); } 15585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void setOpcode(Opcode O) { Opc = O; } 15595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 15605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Expr *getSubExpr() const { return cast<Expr>(Val); } 15615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void setSubExpr(Expr *E) { Val = E; } 15621e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) 15635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// getOperatorLoc - Return the location of the operator. 15645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SourceLocation getOperatorLoc() const { return Loc; } 15655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void setOperatorLoc(SourceLocation L) { Loc = L; } 15661e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) 15671e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) /// isPostfix - Return true if this is a postfix operation, like x++. 15685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static bool isPostfix(Opcode Op) { 15695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return Op == UO_PostInc || Op == UO_PostDec; 15705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 15715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 15725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// isPrefix - Return true if this is a prefix operation, like --x. 15735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static bool isPrefix(Opcode Op) { 15745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return Op == UO_PreInc || Op == UO_PreDec; 15755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 15765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 15771e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) bool isPrefix() const { return isPrefix(getOpcode()); } 15781e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) bool isPostfix() const { return isPostfix(getOpcode()); } 15795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 15805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static bool isIncrementOp(Opcode Op) { 15815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return Op == UO_PreInc || Op == UO_PostInc; 15825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 15835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool isIncrementOp() const { 15845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return isIncrementOp(getOpcode()); 15855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 15865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 15875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static bool isDecrementOp(Opcode Op) { 1588a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) return Op == UO_PreDec || Op == UO_PostDec; 1589a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) } 1590a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) bool isDecrementOp() const { 1591a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) return isDecrementOp(getOpcode()); 1592a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) } 1593a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) 1594a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) static bool isIncrementDecrementOp(Opcode Op) { return Op <= UO_PreDec; } 15955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool isIncrementDecrementOp() const { 15965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return isIncrementDecrementOp(getOpcode()); 15975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 15985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 15995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static bool isArithmeticOp(Opcode Op) { 16005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return Op >= UO_Plus && Op <= UO_LNot; 16015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 16021e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) bool isArithmeticOp() const { return isArithmeticOp(getOpcode()); } 16035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 16045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// getOpcodeStr - Turn an Opcode enum value into the punctuation char it 16055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// corresponds to, e.g. "sizeof" or "[pre]++" 16065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static const char *getOpcodeStr(Opcode Op); 16075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 16085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief Retrieve the unary opcode that corresponds to the given 16094e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) /// overloaded operator. 16105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static Opcode getOverloadedOpcode(OverloadedOperatorKind OO, bool Postfix); 16115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 16125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief Retrieve the overloaded operator kind that corresponds to 16135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// the given unary opcode. 161458537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) static OverloadedOperatorKind getOverloadedOperator(Opcode Opc); 16155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 16161e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) SourceRange getSourceRange() const LLVM_READONLY { 16171e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) if (isPostfix()) 1618868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) return SourceRange(Val->getLocStart(), Loc); 161958537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) else 162058537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) return SourceRange(Loc, Val->getLocEnd()); 162158537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) } 16225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SourceLocation getExprLoc() const LLVM_READONLY { return Loc; } 16235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 16245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static bool classof(const Stmt *T) { 16255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return T->getStmtClass() == UnaryOperatorClass; 16265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 16275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static bool classof(const UnaryOperator *) { return true; } 16285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 16295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Iterators 16305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) child_range children() { return child_range(&Val, &Val+1); } 16315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 16325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 16335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// OffsetOfExpr - [C99 7.17] - This represents an expression of the form 16345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// offsetof(record-type, member-designator). For example, given: 16355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// @code 16365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// struct S { 16375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// float f; 16385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// double d; 16395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// }; 16405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// struct T { 16415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// int i; 16425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// struct S s[10]; 16435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// }; 16445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// @endcode 16455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// we can represent and evaluate the expression @c offsetof(struct T, s[2].d). 16465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 16475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class OffsetOfExpr : public Expr { 16485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)public: 16495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // __builtin_offsetof(type, identifier(.identifier|[expr])*) 16505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) class OffsetOfNode { 16515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) public: 16525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief The kind of offsetof node we have. 16535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) enum Kind { 16545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief An index into an array. 16555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Array = 0x00, 16565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief A field. 16575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Field = 0x01, 16585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief A field in a dependent type, known only by its name. 16595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Identifier = 0x02, 16605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief An implicit indirection through a C++ base class, when the 16615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// field found is in a base class. 16625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Base = 0x03 16635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) }; 16645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 16655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) private: 16665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) enum { MaskBits = 2, Mask = 0x03 }; 16675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 16685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief The source range that covers this part of the designator. 16695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SourceRange Range; 16705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 16715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief The data describing the designator, which comes in three 16725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// different forms, depending on the lower two bits. 167358537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) /// - An unsigned index into the array of Expr*'s stored after this node 167458537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) /// in memory, for [constant-expression] designators. 167558537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) /// - A FieldDecl*, for references to a known field. 167658537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) /// - An IdentifierInfo*, for references to a field with a given name 167758537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) /// when the class type is dependent. 1678a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) /// - A CXXBaseSpecifier*, for references that look at a field in a 1679a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch /// base class. 1680a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch uintptr_t Data; 1681a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch 1682a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch public: 1683a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) /// \brief Create an offsetof node that refers to an array element. 16845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) OffsetOfNode(SourceLocation LBracketLoc, unsigned Index, 16855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SourceLocation RBracketLoc) 16865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : Range(LBracketLoc, RBracketLoc), Data((Index << 2) | Array) { } 16875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 16885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief Create an offsetof node that refers to a field. 16895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) OffsetOfNode(SourceLocation DotLoc, FieldDecl *Field, 16905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SourceLocation NameLoc) 16915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : Range(DotLoc.isValid()? DotLoc : NameLoc, NameLoc), 16925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Data(reinterpret_cast<uintptr_t>(Field) | OffsetOfNode::Field) { } 16935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 16945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief Create an offsetof node that refers to an identifier. 16955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) OffsetOfNode(SourceLocation DotLoc, IdentifierInfo *Name, 16965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SourceLocation NameLoc) 16975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : Range(DotLoc.isValid()? DotLoc : NameLoc, NameLoc), 16985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Data(reinterpret_cast<uintptr_t>(Name) | Identifier) { } 16995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 17005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief Create an offsetof node that refers into a C++ base class. 17015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) explicit OffsetOfNode(const CXXBaseSpecifier *Base) 17025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : Range(), Data(reinterpret_cast<uintptr_t>(Base) | OffsetOfNode::Base) {} 17035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 17045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief Determine what kind of offsetof node this is. 17055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Kind getKind() const { 17065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return static_cast<Kind>(Data & Mask); 17075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 17085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 17095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief For an array element node, returns the index into the array 17105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// of expressions. 17115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) unsigned getArrayExprIndex() const { 17125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) assert(getKind() == Array); 17135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return Data >> 2; 17145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 17152a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 17162a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) /// \brief For a field offsetof node, returns the field. 17172a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) FieldDecl *getField() const { 17182a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) assert(getKind() == Field); 17192a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return reinterpret_cast<FieldDecl *>(Data & ~(uintptr_t)Mask); 17202a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 17212a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 17222a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) /// \brief For a field or identifier offsetof node, returns the name of 17232a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) /// the field. 17242a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) IdentifierInfo *getFieldName() const; 17251e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) 17262a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) /// \brief For a base class node, returns the base specifier. 17272a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) CXXBaseSpecifier *getBase() const { 17285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) assert(getKind() == Base); 17295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return reinterpret_cast<CXXBaseSpecifier *>(Data & ~(uintptr_t)Mask); 17305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 17315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 17325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// \brief Retrieve the source range that covers this offsetof node. 17335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// 17345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// For an array element node, the source range contains the locations of 17355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// the square brackets. For a field or identifier node, the source range 17365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// contains the location of the period (if there is one) and the 17375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// identifier. 17385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SourceRange getSourceRange() const LLVM_READONLY { return Range; } 17395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) }; 17405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 17415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)private: 17425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 17435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SourceLocation OperatorLoc, RParenLoc; 17445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Base type; 17455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) TypeSourceInfo *TSInfo; 17465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Number of sub-components (i.e. instances of OffsetOfNode). 17475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) unsigned NumComps; 17485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Number of sub-expressions (i.e. array subscript expressions). 17495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) unsigned NumExprs; 1750 1751 OffsetOfExpr(ASTContext &C, QualType type, 1752 SourceLocation OperatorLoc, TypeSourceInfo *tsi, 1753 OffsetOfNode* compsPtr, unsigned numComps, 1754 Expr** exprsPtr, unsigned numExprs, 1755 SourceLocation RParenLoc); 1756 1757 explicit OffsetOfExpr(unsigned numComps, unsigned numExprs) 1758 : Expr(OffsetOfExprClass, EmptyShell()), 1759 TSInfo(0), NumComps(numComps), NumExprs(numExprs) {} 1760 1761public: 1762 1763 static OffsetOfExpr *Create(ASTContext &C, QualType type, 1764 SourceLocation OperatorLoc, TypeSourceInfo *tsi, 1765 OffsetOfNode* compsPtr, unsigned numComps, 1766 Expr** exprsPtr, unsigned numExprs, 1767 SourceLocation RParenLoc); 1768 1769 static OffsetOfExpr *CreateEmpty(ASTContext &C, 1770 unsigned NumComps, unsigned NumExprs); 1771 1772 /// getOperatorLoc - Return the location of the operator. 1773 SourceLocation getOperatorLoc() const { return OperatorLoc; } 1774 void setOperatorLoc(SourceLocation L) { OperatorLoc = L; } 1775 1776 /// \brief Return the location of the right parentheses. 1777 SourceLocation getRParenLoc() const { return RParenLoc; } 1778 void setRParenLoc(SourceLocation R) { RParenLoc = R; } 1779 1780 TypeSourceInfo *getTypeSourceInfo() const { 1781 return TSInfo; 1782 } 1783 void setTypeSourceInfo(TypeSourceInfo *tsi) { 1784 TSInfo = tsi; 1785 } 1786 1787 const OffsetOfNode &getComponent(unsigned Idx) const { 1788 assert(Idx < NumComps && "Subscript out of range"); 1789 return reinterpret_cast<const OffsetOfNode *> (this + 1)[Idx]; 1790 } 1791 1792 void setComponent(unsigned Idx, OffsetOfNode ON) { 1793 assert(Idx < NumComps && "Subscript out of range"); 1794 reinterpret_cast<OffsetOfNode *> (this + 1)[Idx] = ON; 1795 } 1796 1797 unsigned getNumComponents() const { 1798 return NumComps; 1799 } 1800 1801 Expr* getIndexExpr(unsigned Idx) { 1802 assert(Idx < NumExprs && "Subscript out of range"); 1803 return reinterpret_cast<Expr **>( 1804 reinterpret_cast<OffsetOfNode *>(this+1) + NumComps)[Idx]; 1805 } 1806 const Expr *getIndexExpr(unsigned Idx) const { 1807 return const_cast<OffsetOfExpr*>(this)->getIndexExpr(Idx); 1808 } 1809 1810 void setIndexExpr(unsigned Idx, Expr* E) { 1811 assert(Idx < NumComps && "Subscript out of range"); 1812 reinterpret_cast<Expr **>( 1813 reinterpret_cast<OffsetOfNode *>(this+1) + NumComps)[Idx] = E; 1814 } 1815 1816 unsigned getNumExpressions() const { 1817 return NumExprs; 1818 } 1819 1820 SourceRange getSourceRange() const LLVM_READONLY { 1821 return SourceRange(OperatorLoc, RParenLoc); 1822 } 1823 1824 static bool classof(const Stmt *T) { 1825 return T->getStmtClass() == OffsetOfExprClass; 1826 } 1827 1828 static bool classof(const OffsetOfExpr *) { return true; } 1829 1830 // Iterators 1831 child_range children() { 1832 Stmt **begin = 1833 reinterpret_cast<Stmt**>(reinterpret_cast<OffsetOfNode*>(this + 1) 1834 + NumComps); 1835 return child_range(begin, begin + NumExprs); 1836 } 1837}; 1838 1839/// UnaryExprOrTypeTraitExpr - expression with either a type or (unevaluated) 1840/// expression operand. Used for sizeof/alignof (C99 6.5.3.4) and 1841/// vec_step (OpenCL 1.1 6.11.12). 1842class UnaryExprOrTypeTraitExpr : public Expr { 1843 union { 1844 TypeSourceInfo *Ty; 1845 Stmt *Ex; 1846 } Argument; 1847 SourceLocation OpLoc, RParenLoc; 1848 1849public: 1850 UnaryExprOrTypeTraitExpr(UnaryExprOrTypeTrait ExprKind, TypeSourceInfo *TInfo, 1851 QualType resultType, SourceLocation op, 1852 SourceLocation rp) : 1853 Expr(UnaryExprOrTypeTraitExprClass, resultType, VK_RValue, OK_Ordinary, 1854 false, // Never type-dependent (C++ [temp.dep.expr]p3). 1855 // Value-dependent if the argument is type-dependent. 1856 TInfo->getType()->isDependentType(), 1857 TInfo->getType()->isInstantiationDependentType(), 1858 TInfo->getType()->containsUnexpandedParameterPack()), 1859 OpLoc(op), RParenLoc(rp) { 1860 UnaryExprOrTypeTraitExprBits.Kind = ExprKind; 1861 UnaryExprOrTypeTraitExprBits.IsType = true; 1862 Argument.Ty = TInfo; 1863 } 1864 1865 UnaryExprOrTypeTraitExpr(UnaryExprOrTypeTrait ExprKind, Expr *E, 1866 QualType resultType, SourceLocation op, 1867 SourceLocation rp) : 1868 Expr(UnaryExprOrTypeTraitExprClass, resultType, VK_RValue, OK_Ordinary, 1869 false, // Never type-dependent (C++ [temp.dep.expr]p3). 1870 // Value-dependent if the argument is type-dependent. 1871 E->isTypeDependent(), 1872 E->isInstantiationDependent(), 1873 E->containsUnexpandedParameterPack()), 1874 OpLoc(op), RParenLoc(rp) { 1875 UnaryExprOrTypeTraitExprBits.Kind = ExprKind; 1876 UnaryExprOrTypeTraitExprBits.IsType = false; 1877 Argument.Ex = E; 1878 } 1879 1880 /// \brief Construct an empty sizeof/alignof expression. 1881 explicit UnaryExprOrTypeTraitExpr(EmptyShell Empty) 1882 : Expr(UnaryExprOrTypeTraitExprClass, Empty) { } 1883 1884 UnaryExprOrTypeTrait getKind() const { 1885 return static_cast<UnaryExprOrTypeTrait>(UnaryExprOrTypeTraitExprBits.Kind); 1886 } 1887 void setKind(UnaryExprOrTypeTrait K) { UnaryExprOrTypeTraitExprBits.Kind = K;} 1888 1889 bool isArgumentType() const { return UnaryExprOrTypeTraitExprBits.IsType; } 1890 QualType getArgumentType() const { 1891 return getArgumentTypeInfo()->getType(); 1892 } 1893 TypeSourceInfo *getArgumentTypeInfo() const { 1894 assert(isArgumentType() && "calling getArgumentType() when arg is expr"); 1895 return Argument.Ty; 1896 } 1897 Expr *getArgumentExpr() { 1898 assert(!isArgumentType() && "calling getArgumentExpr() when arg is type"); 1899 return static_cast<Expr*>(Argument.Ex); 1900 } 1901 const Expr *getArgumentExpr() const { 1902 return const_cast<UnaryExprOrTypeTraitExpr*>(this)->getArgumentExpr(); 1903 } 1904 1905 void setArgument(Expr *E) { 1906 Argument.Ex = E; 1907 UnaryExprOrTypeTraitExprBits.IsType = false; 1908 } 1909 void setArgument(TypeSourceInfo *TInfo) { 1910 Argument.Ty = TInfo; 1911 UnaryExprOrTypeTraitExprBits.IsType = true; 1912 } 1913 1914 /// Gets the argument type, or the type of the argument expression, whichever 1915 /// is appropriate. 1916 QualType getTypeOfArgument() const { 1917 return isArgumentType() ? getArgumentType() : getArgumentExpr()->getType(); 1918 } 1919 1920 SourceLocation getOperatorLoc() const { return OpLoc; } 1921 void setOperatorLoc(SourceLocation L) { OpLoc = L; } 1922 1923 SourceLocation getRParenLoc() const { return RParenLoc; } 1924 void setRParenLoc(SourceLocation L) { RParenLoc = L; } 1925 1926 SourceRange getSourceRange() const LLVM_READONLY { 1927 return SourceRange(OpLoc, RParenLoc); 1928 } 1929 1930 static bool classof(const Stmt *T) { 1931 return T->getStmtClass() == UnaryExprOrTypeTraitExprClass; 1932 } 1933 static bool classof(const UnaryExprOrTypeTraitExpr *) { return true; } 1934 1935 // Iterators 1936 child_range children(); 1937}; 1938 1939//===----------------------------------------------------------------------===// 1940// Postfix Operators. 1941//===----------------------------------------------------------------------===// 1942 1943/// ArraySubscriptExpr - [C99 6.5.2.1] Array Subscripting. 1944class ArraySubscriptExpr : public Expr { 1945 enum { LHS, RHS, END_EXPR=2 }; 1946 Stmt* SubExprs[END_EXPR]; 1947 SourceLocation RBracketLoc; 1948public: 1949 ArraySubscriptExpr(Expr *lhs, Expr *rhs, QualType t, 1950 ExprValueKind VK, ExprObjectKind OK, 1951 SourceLocation rbracketloc) 1952 : Expr(ArraySubscriptExprClass, t, VK, OK, 1953 lhs->isTypeDependent() || rhs->isTypeDependent(), 1954 lhs->isValueDependent() || rhs->isValueDependent(), 1955 (lhs->isInstantiationDependent() || 1956 rhs->isInstantiationDependent()), 1957 (lhs->containsUnexpandedParameterPack() || 1958 rhs->containsUnexpandedParameterPack())), 1959 RBracketLoc(rbracketloc) { 1960 SubExprs[LHS] = lhs; 1961 SubExprs[RHS] = rhs; 1962 } 1963 1964 /// \brief Create an empty array subscript expression. 1965 explicit ArraySubscriptExpr(EmptyShell Shell) 1966 : Expr(ArraySubscriptExprClass, Shell) { } 1967 1968 /// An array access can be written A[4] or 4[A] (both are equivalent). 1969 /// - getBase() and getIdx() always present the normalized view: A[4]. 1970 /// In this case getBase() returns "A" and getIdx() returns "4". 1971 /// - getLHS() and getRHS() present the syntactic view. e.g. for 1972 /// 4[A] getLHS() returns "4". 1973 /// Note: Because vector element access is also written A[4] we must 1974 /// predicate the format conversion in getBase and getIdx only on the 1975 /// the type of the RHS, as it is possible for the LHS to be a vector of 1976 /// integer type 1977 Expr *getLHS() { return cast<Expr>(SubExprs[LHS]); } 1978 const Expr *getLHS() const { return cast<Expr>(SubExprs[LHS]); } 1979 void setLHS(Expr *E) { SubExprs[LHS] = E; } 1980 1981 Expr *getRHS() { return cast<Expr>(SubExprs[RHS]); } 1982 const Expr *getRHS() const { return cast<Expr>(SubExprs[RHS]); } 1983 void setRHS(Expr *E) { SubExprs[RHS] = E; } 1984 1985 Expr *getBase() { 1986 return cast<Expr>(getRHS()->getType()->isIntegerType() ? getLHS():getRHS()); 1987 } 1988 1989 const Expr *getBase() const { 1990 return cast<Expr>(getRHS()->getType()->isIntegerType() ? getLHS():getRHS()); 1991 } 1992 1993 Expr *getIdx() { 1994 return cast<Expr>(getRHS()->getType()->isIntegerType() ? getRHS():getLHS()); 1995 } 1996 1997 const Expr *getIdx() const { 1998 return cast<Expr>(getRHS()->getType()->isIntegerType() ? getRHS():getLHS()); 1999 } 2000 2001 SourceRange getSourceRange() const LLVM_READONLY { 2002 return SourceRange(getLHS()->getLocStart(), RBracketLoc); 2003 } 2004 2005 SourceLocation getRBracketLoc() const { return RBracketLoc; } 2006 void setRBracketLoc(SourceLocation L) { RBracketLoc = L; } 2007 2008 SourceLocation getExprLoc() const LLVM_READONLY { return getBase()->getExprLoc(); } 2009 2010 static bool classof(const Stmt *T) { 2011 return T->getStmtClass() == ArraySubscriptExprClass; 2012 } 2013 static bool classof(const ArraySubscriptExpr *) { return true; } 2014 2015 // Iterators 2016 child_range children() { 2017 return child_range(&SubExprs[0], &SubExprs[0]+END_EXPR); 2018 } 2019}; 2020 2021 2022/// CallExpr - Represents a function call (C99 6.5.2.2, C++ [expr.call]). 2023/// CallExpr itself represents a normal function call, e.g., "f(x, 2)", 2024/// while its subclasses may represent alternative syntax that (semantically) 2025/// results in a function call. For example, CXXOperatorCallExpr is 2026/// a subclass for overloaded operator calls that use operator syntax, e.g., 2027/// "str1 + str2" to resolve to a function call. 2028class CallExpr : public Expr { 2029 enum { FN=0, PREARGS_START=1 }; 2030 Stmt **SubExprs; 2031 unsigned NumArgs; 2032 SourceLocation RParenLoc; 2033 2034protected: 2035 // These versions of the constructor are for derived classes. 2036 CallExpr(ASTContext& C, StmtClass SC, Expr *fn, unsigned NumPreArgs, 2037 Expr **args, unsigned numargs, QualType t, ExprValueKind VK, 2038 SourceLocation rparenloc); 2039 CallExpr(ASTContext &C, StmtClass SC, unsigned NumPreArgs, EmptyShell Empty); 2040 2041 Stmt *getPreArg(unsigned i) { 2042 assert(i < getNumPreArgs() && "Prearg access out of range!"); 2043 return SubExprs[PREARGS_START+i]; 2044 } 2045 const Stmt *getPreArg(unsigned i) const { 2046 assert(i < getNumPreArgs() && "Prearg access out of range!"); 2047 return SubExprs[PREARGS_START+i]; 2048 } 2049 void setPreArg(unsigned i, Stmt *PreArg) { 2050 assert(i < getNumPreArgs() && "Prearg access out of range!"); 2051 SubExprs[PREARGS_START+i] = PreArg; 2052 } 2053 2054 unsigned getNumPreArgs() const { return CallExprBits.NumPreArgs; } 2055 2056public: 2057 CallExpr(ASTContext& C, Expr *fn, Expr **args, unsigned numargs, QualType t, 2058 ExprValueKind VK, SourceLocation rparenloc); 2059 2060 /// \brief Build an empty call expression. 2061 CallExpr(ASTContext &C, StmtClass SC, EmptyShell Empty); 2062 2063 const Expr *getCallee() const { return cast<Expr>(SubExprs[FN]); } 2064 Expr *getCallee() { return cast<Expr>(SubExprs[FN]); } 2065 void setCallee(Expr *F) { SubExprs[FN] = F; } 2066 2067 Decl *getCalleeDecl(); 2068 const Decl *getCalleeDecl() const { 2069 return const_cast<CallExpr*>(this)->getCalleeDecl(); 2070 } 2071 2072 /// \brief If the callee is a FunctionDecl, return it. Otherwise return 0. 2073 FunctionDecl *getDirectCallee(); 2074 const FunctionDecl *getDirectCallee() const { 2075 return const_cast<CallExpr*>(this)->getDirectCallee(); 2076 } 2077 2078 /// getNumArgs - Return the number of actual arguments to this call. 2079 /// 2080 unsigned getNumArgs() const { return NumArgs; } 2081 2082 /// \brief Retrieve the call arguments. 2083 Expr **getArgs() { 2084 return reinterpret_cast<Expr **>(SubExprs+getNumPreArgs()+PREARGS_START); 2085 } 2086 const Expr *const *getArgs() const { 2087 return const_cast<CallExpr*>(this)->getArgs(); 2088 } 2089 2090 /// getArg - Return the specified argument. 2091 Expr *getArg(unsigned Arg) { 2092 assert(Arg < NumArgs && "Arg access out of range!"); 2093 return cast<Expr>(SubExprs[Arg+getNumPreArgs()+PREARGS_START]); 2094 } 2095 const Expr *getArg(unsigned Arg) const { 2096 assert(Arg < NumArgs && "Arg access out of range!"); 2097 return cast<Expr>(SubExprs[Arg+getNumPreArgs()+PREARGS_START]); 2098 } 2099 2100 /// setArg - Set the specified argument. 2101 void setArg(unsigned Arg, Expr *ArgExpr) { 2102 assert(Arg < NumArgs && "Arg access out of range!"); 2103 SubExprs[Arg+getNumPreArgs()+PREARGS_START] = ArgExpr; 2104 } 2105 2106 /// setNumArgs - This changes the number of arguments present in this call. 2107 /// Any orphaned expressions are deleted by this, and any new operands are set 2108 /// to null. 2109 void setNumArgs(ASTContext& C, unsigned NumArgs); 2110 2111 typedef ExprIterator arg_iterator; 2112 typedef ConstExprIterator const_arg_iterator; 2113 2114 arg_iterator arg_begin() { return SubExprs+PREARGS_START+getNumPreArgs(); } 2115 arg_iterator arg_end() { 2116 return SubExprs+PREARGS_START+getNumPreArgs()+getNumArgs(); 2117 } 2118 const_arg_iterator arg_begin() const { 2119 return SubExprs+PREARGS_START+getNumPreArgs(); 2120 } 2121 const_arg_iterator arg_end() const { 2122 return SubExprs+PREARGS_START+getNumPreArgs()+getNumArgs(); 2123 } 2124 2125 /// getNumCommas - Return the number of commas that must have been present in 2126 /// this function call. 2127 unsigned getNumCommas() const { return NumArgs ? NumArgs - 1 : 0; } 2128 2129 /// isBuiltinCall - If this is a call to a builtin, return the builtin ID. If 2130 /// not, return 0. 2131 unsigned isBuiltinCall() const; 2132 2133 /// getCallReturnType - Get the return type of the call expr. This is not 2134 /// always the type of the expr itself, if the return type is a reference 2135 /// type. 2136 QualType getCallReturnType() const; 2137 2138 SourceLocation getRParenLoc() const { return RParenLoc; } 2139 void setRParenLoc(SourceLocation L) { RParenLoc = L; } 2140 2141 SourceRange getSourceRange() const LLVM_READONLY; 2142 SourceLocation getLocStart() const LLVM_READONLY; 2143 SourceLocation getLocEnd() const LLVM_READONLY; 2144 2145 static bool classof(const Stmt *T) { 2146 return T->getStmtClass() >= firstCallExprConstant && 2147 T->getStmtClass() <= lastCallExprConstant; 2148 } 2149 static bool classof(const CallExpr *) { return true; } 2150 2151 // Iterators 2152 child_range children() { 2153 return child_range(&SubExprs[0], 2154 &SubExprs[0]+NumArgs+getNumPreArgs()+PREARGS_START); 2155 } 2156}; 2157 2158/// MemberExpr - [C99 6.5.2.3] Structure and Union Members. X->F and X.F. 2159/// 2160class MemberExpr : public Expr { 2161 /// Extra data stored in some member expressions. 2162 struct MemberNameQualifier { 2163 /// \brief The nested-name-specifier that qualifies the name, including 2164 /// source-location information. 2165 NestedNameSpecifierLoc QualifierLoc; 2166 2167 /// \brief The DeclAccessPair through which the MemberDecl was found due to 2168 /// name qualifiers. 2169 DeclAccessPair FoundDecl; 2170 }; 2171 2172 /// Base - the expression for the base pointer or structure references. In 2173 /// X.F, this is "X". 2174 Stmt *Base; 2175 2176 /// MemberDecl - This is the decl being referenced by the field/member name. 2177 /// In X.F, this is the decl referenced by F. 2178 ValueDecl *MemberDecl; 2179 2180 /// MemberDNLoc - Provides source/type location info for the 2181 /// declaration name embedded in MemberDecl. 2182 DeclarationNameLoc MemberDNLoc; 2183 2184 /// MemberLoc - This is the location of the member name. 2185 SourceLocation MemberLoc; 2186 2187 /// IsArrow - True if this is "X->F", false if this is "X.F". 2188 bool IsArrow : 1; 2189 2190 /// \brief True if this member expression used a nested-name-specifier to 2191 /// refer to the member, e.g., "x->Base::f", or found its member via a using 2192 /// declaration. When true, a MemberNameQualifier 2193 /// structure is allocated immediately after the MemberExpr. 2194 bool HasQualifierOrFoundDecl : 1; 2195 2196 /// \brief True if this member expression specified a template keyword 2197 /// and/or a template argument list explicitly, e.g., x->f<int>, 2198 /// x->template f, x->template f<int>. 2199 /// When true, an ASTTemplateKWAndArgsInfo structure and its 2200 /// TemplateArguments (if any) are allocated immediately after 2201 /// the MemberExpr or, if the member expression also has a qualifier, 2202 /// after the MemberNameQualifier structure. 2203 bool HasTemplateKWAndArgsInfo : 1; 2204 2205 /// \brief True if this member expression refers to a method that 2206 /// was resolved from an overloaded set having size greater than 1. 2207 bool HadMultipleCandidates : 1; 2208 2209 /// \brief Retrieve the qualifier that preceded the member name, if any. 2210 MemberNameQualifier *getMemberQualifier() { 2211 assert(HasQualifierOrFoundDecl); 2212 return reinterpret_cast<MemberNameQualifier *> (this + 1); 2213 } 2214 2215 /// \brief Retrieve the qualifier that preceded the member name, if any. 2216 const MemberNameQualifier *getMemberQualifier() const { 2217 return const_cast<MemberExpr *>(this)->getMemberQualifier(); 2218 } 2219 2220public: 2221 MemberExpr(Expr *base, bool isarrow, ValueDecl *memberdecl, 2222 const DeclarationNameInfo &NameInfo, QualType ty, 2223 ExprValueKind VK, ExprObjectKind OK) 2224 : Expr(MemberExprClass, ty, VK, OK, 2225 base->isTypeDependent(), 2226 base->isValueDependent(), 2227 base->isInstantiationDependent(), 2228 base->containsUnexpandedParameterPack()), 2229 Base(base), MemberDecl(memberdecl), MemberDNLoc(NameInfo.getInfo()), 2230 MemberLoc(NameInfo.getLoc()), IsArrow(isarrow), 2231 HasQualifierOrFoundDecl(false), HasTemplateKWAndArgsInfo(false), 2232 HadMultipleCandidates(false) { 2233 assert(memberdecl->getDeclName() == NameInfo.getName()); 2234 } 2235 2236 // NOTE: this constructor should be used only when it is known that 2237 // the member name can not provide additional syntactic info 2238 // (i.e., source locations for C++ operator names or type source info 2239 // for constructors, destructors and conversion operators). 2240 MemberExpr(Expr *base, bool isarrow, ValueDecl *memberdecl, 2241 SourceLocation l, QualType ty, 2242 ExprValueKind VK, ExprObjectKind OK) 2243 : Expr(MemberExprClass, ty, VK, OK, 2244 base->isTypeDependent(), base->isValueDependent(), 2245 base->isInstantiationDependent(), 2246 base->containsUnexpandedParameterPack()), 2247 Base(base), MemberDecl(memberdecl), MemberDNLoc(), MemberLoc(l), 2248 IsArrow(isarrow), 2249 HasQualifierOrFoundDecl(false), HasTemplateKWAndArgsInfo(false), 2250 HadMultipleCandidates(false) {} 2251 2252 static MemberExpr *Create(ASTContext &C, Expr *base, bool isarrow, 2253 NestedNameSpecifierLoc QualifierLoc, 2254 SourceLocation TemplateKWLoc, 2255 ValueDecl *memberdecl, DeclAccessPair founddecl, 2256 DeclarationNameInfo MemberNameInfo, 2257 const TemplateArgumentListInfo *targs, 2258 QualType ty, ExprValueKind VK, ExprObjectKind OK); 2259 2260 void setBase(Expr *E) { Base = E; } 2261 Expr *getBase() const { return cast<Expr>(Base); } 2262 2263 /// \brief Retrieve the member declaration to which this expression refers. 2264 /// 2265 /// The returned declaration will either be a FieldDecl or (in C++) 2266 /// a CXXMethodDecl. 2267 ValueDecl *getMemberDecl() const { return MemberDecl; } 2268 void setMemberDecl(ValueDecl *D) { MemberDecl = D; } 2269 2270 /// \brief Retrieves the declaration found by lookup. 2271 DeclAccessPair getFoundDecl() const { 2272 if (!HasQualifierOrFoundDecl) 2273 return DeclAccessPair::make(getMemberDecl(), 2274 getMemberDecl()->getAccess()); 2275 return getMemberQualifier()->FoundDecl; 2276 } 2277 2278 /// \brief Determines whether this member expression actually had 2279 /// a C++ nested-name-specifier prior to the name of the member, e.g., 2280 /// x->Base::foo. 2281 bool hasQualifier() const { return getQualifier() != 0; } 2282 2283 /// \brief If the member name was qualified, retrieves the 2284 /// nested-name-specifier that precedes the member name. Otherwise, returns 2285 /// NULL. 2286 NestedNameSpecifier *getQualifier() const { 2287 if (!HasQualifierOrFoundDecl) 2288 return 0; 2289 2290 return getMemberQualifier()->QualifierLoc.getNestedNameSpecifier(); 2291 } 2292 2293 /// \brief If the member name was qualified, retrieves the 2294 /// nested-name-specifier that precedes the member name, with source-location 2295 /// information. 2296 NestedNameSpecifierLoc getQualifierLoc() const { 2297 if (!hasQualifier()) 2298 return NestedNameSpecifierLoc(); 2299 2300 return getMemberQualifier()->QualifierLoc; 2301 } 2302 2303 /// \brief Return the optional template keyword and arguments info. 2304 ASTTemplateKWAndArgsInfo *getTemplateKWAndArgsInfo() { 2305 if (!HasTemplateKWAndArgsInfo) 2306 return 0; 2307 2308 if (!HasQualifierOrFoundDecl) 2309 return reinterpret_cast<ASTTemplateKWAndArgsInfo *>(this + 1); 2310 2311 return reinterpret_cast<ASTTemplateKWAndArgsInfo *>( 2312 getMemberQualifier() + 1); 2313 } 2314 2315 /// \brief Return the optional template keyword and arguments info. 2316 const ASTTemplateKWAndArgsInfo *getTemplateKWAndArgsInfo() const { 2317 return const_cast<MemberExpr*>(this)->getTemplateKWAndArgsInfo(); 2318 } 2319 2320 /// \brief Retrieve the location of the template keyword preceding 2321 /// the member name, if any. 2322 SourceLocation getTemplateKeywordLoc() const { 2323 if (!HasTemplateKWAndArgsInfo) return SourceLocation(); 2324 return getTemplateKWAndArgsInfo()->getTemplateKeywordLoc(); 2325 } 2326 2327 /// \brief Retrieve the location of the left angle bracket starting the 2328 /// explicit template argument list following the member name, if any. 2329 SourceLocation getLAngleLoc() const { 2330 if (!HasTemplateKWAndArgsInfo) return SourceLocation(); 2331 return getTemplateKWAndArgsInfo()->LAngleLoc; 2332 } 2333 2334 /// \brief Retrieve the location of the right angle bracket ending the 2335 /// explicit template argument list following the member name, if any. 2336 SourceLocation getRAngleLoc() const { 2337 if (!HasTemplateKWAndArgsInfo) return SourceLocation(); 2338 return getTemplateKWAndArgsInfo()->RAngleLoc; 2339 } 2340 2341 /// Determines whether the member name was preceded by the template keyword. 2342 bool hasTemplateKeyword() const { return getTemplateKeywordLoc().isValid(); } 2343 2344 /// \brief Determines whether the member name was followed by an 2345 /// explicit template argument list. 2346 bool hasExplicitTemplateArgs() const { return getLAngleLoc().isValid(); } 2347 2348 /// \brief Copies the template arguments (if present) into the given 2349 /// structure. 2350 void copyTemplateArgumentsInto(TemplateArgumentListInfo &List) const { 2351 if (hasExplicitTemplateArgs()) 2352 getExplicitTemplateArgs().copyInto(List); 2353 } 2354 2355 /// \brief Retrieve the explicit template argument list that 2356 /// follow the member template name. This must only be called on an 2357 /// expression with explicit template arguments. 2358 ASTTemplateArgumentListInfo &getExplicitTemplateArgs() { 2359 assert(hasExplicitTemplateArgs()); 2360 return *getTemplateKWAndArgsInfo(); 2361 } 2362 2363 /// \brief Retrieve the explicit template argument list that 2364 /// followed the member template name. This must only be called on 2365 /// an expression with explicit template arguments. 2366 const ASTTemplateArgumentListInfo &getExplicitTemplateArgs() const { 2367 return const_cast<MemberExpr *>(this)->getExplicitTemplateArgs(); 2368 } 2369 2370 /// \brief Retrieves the optional explicit template arguments. 2371 /// This points to the same data as getExplicitTemplateArgs(), but 2372 /// returns null if there are no explicit template arguments. 2373 const ASTTemplateArgumentListInfo *getOptionalExplicitTemplateArgs() const { 2374 if (!hasExplicitTemplateArgs()) return 0; 2375 return &getExplicitTemplateArgs(); 2376 } 2377 2378 /// \brief Retrieve the template arguments provided as part of this 2379 /// template-id. 2380 const TemplateArgumentLoc *getTemplateArgs() const { 2381 if (!hasExplicitTemplateArgs()) 2382 return 0; 2383 2384 return getExplicitTemplateArgs().getTemplateArgs(); 2385 } 2386 2387 /// \brief Retrieve the number of template arguments provided as part of this 2388 /// template-id. 2389 unsigned getNumTemplateArgs() const { 2390 if (!hasExplicitTemplateArgs()) 2391 return 0; 2392 2393 return getExplicitTemplateArgs().NumTemplateArgs; 2394 } 2395 2396 /// \brief Retrieve the member declaration name info. 2397 DeclarationNameInfo getMemberNameInfo() const { 2398 return DeclarationNameInfo(MemberDecl->getDeclName(), 2399 MemberLoc, MemberDNLoc); 2400 } 2401 2402 bool isArrow() const { return IsArrow; } 2403 void setArrow(bool A) { IsArrow = A; } 2404 2405 /// getMemberLoc - Return the location of the "member", in X->F, it is the 2406 /// location of 'F'. 2407 SourceLocation getMemberLoc() const { return MemberLoc; } 2408 void setMemberLoc(SourceLocation L) { MemberLoc = L; } 2409 2410 SourceRange getSourceRange() const LLVM_READONLY; 2411 SourceLocation getLocStart() const LLVM_READONLY; 2412 SourceLocation getLocEnd() const LLVM_READONLY; 2413 2414 SourceLocation getExprLoc() const LLVM_READONLY { return MemberLoc; } 2415 2416 /// \brief Determine whether the base of this explicit is implicit. 2417 bool isImplicitAccess() const { 2418 return getBase() && getBase()->isImplicitCXXThis(); 2419 } 2420 2421 /// \brief Returns true if this member expression refers to a method that 2422 /// was resolved from an overloaded set having size greater than 1. 2423 bool hadMultipleCandidates() const { 2424 return HadMultipleCandidates; 2425 } 2426 /// \brief Sets the flag telling whether this expression refers to 2427 /// a method that was resolved from an overloaded set having size 2428 /// greater than 1. 2429 void setHadMultipleCandidates(bool V = true) { 2430 HadMultipleCandidates = V; 2431 } 2432 2433 static bool classof(const Stmt *T) { 2434 return T->getStmtClass() == MemberExprClass; 2435 } 2436 static bool classof(const MemberExpr *) { return true; } 2437 2438 // Iterators 2439 child_range children() { return child_range(&Base, &Base+1); } 2440 2441 friend class ASTReader; 2442 friend class ASTStmtWriter; 2443}; 2444 2445/// CompoundLiteralExpr - [C99 6.5.2.5] 2446/// 2447class CompoundLiteralExpr : public Expr { 2448 /// LParenLoc - If non-null, this is the location of the left paren in a 2449 /// compound literal like "(int){4}". This can be null if this is a 2450 /// synthesized compound expression. 2451 SourceLocation LParenLoc; 2452 2453 /// The type as written. This can be an incomplete array type, in 2454 /// which case the actual expression type will be different. 2455 /// The int part of the pair stores whether this expr is file scope. 2456 llvm::PointerIntPair<TypeSourceInfo *, 1, bool> TInfoAndScope; 2457 Stmt *Init; 2458public: 2459 CompoundLiteralExpr(SourceLocation lparenloc, TypeSourceInfo *tinfo, 2460 QualType T, ExprValueKind VK, Expr *init, bool fileScope) 2461 : Expr(CompoundLiteralExprClass, T, VK, OK_Ordinary, 2462 tinfo->getType()->isDependentType(), 2463 init->isValueDependent(), 2464 (init->isInstantiationDependent() || 2465 tinfo->getType()->isInstantiationDependentType()), 2466 init->containsUnexpandedParameterPack()), 2467 LParenLoc(lparenloc), TInfoAndScope(tinfo, fileScope), Init(init) {} 2468 2469 /// \brief Construct an empty compound literal. 2470 explicit CompoundLiteralExpr(EmptyShell Empty) 2471 : Expr(CompoundLiteralExprClass, Empty) { } 2472 2473 const Expr *getInitializer() const { return cast<Expr>(Init); } 2474 Expr *getInitializer() { return cast<Expr>(Init); } 2475 void setInitializer(Expr *E) { Init = E; } 2476 2477 bool isFileScope() const { return TInfoAndScope.getInt(); } 2478 void setFileScope(bool FS) { TInfoAndScope.setInt(FS); } 2479 2480 SourceLocation getLParenLoc() const { return LParenLoc; } 2481 void setLParenLoc(SourceLocation L) { LParenLoc = L; } 2482 2483 TypeSourceInfo *getTypeSourceInfo() const { 2484 return TInfoAndScope.getPointer(); 2485 } 2486 void setTypeSourceInfo(TypeSourceInfo *tinfo) { 2487 TInfoAndScope.setPointer(tinfo); 2488 } 2489 2490 SourceRange getSourceRange() const LLVM_READONLY { 2491 // FIXME: Init should never be null. 2492 if (!Init) 2493 return SourceRange(); 2494 if (LParenLoc.isInvalid()) 2495 return Init->getSourceRange(); 2496 return SourceRange(LParenLoc, Init->getLocEnd()); 2497 } 2498 2499 static bool classof(const Stmt *T) { 2500 return T->getStmtClass() == CompoundLiteralExprClass; 2501 } 2502 static bool classof(const CompoundLiteralExpr *) { return true; } 2503 2504 // Iterators 2505 child_range children() { return child_range(&Init, &Init+1); } 2506}; 2507 2508/// CastExpr - Base class for type casts, including both implicit 2509/// casts (ImplicitCastExpr) and explicit casts that have some 2510/// representation in the source code (ExplicitCastExpr's derived 2511/// classes). 2512class CastExpr : public Expr { 2513public: 2514 typedef clang::CastKind CastKind; 2515 2516private: 2517 Stmt *Op; 2518 2519 void CheckCastConsistency() const; 2520 2521 const CXXBaseSpecifier * const *path_buffer() const { 2522 return const_cast<CastExpr*>(this)->path_buffer(); 2523 } 2524 CXXBaseSpecifier **path_buffer(); 2525 2526 void setBasePathSize(unsigned basePathSize) { 2527 CastExprBits.BasePathSize = basePathSize; 2528 assert(CastExprBits.BasePathSize == basePathSize && 2529 "basePathSize doesn't fit in bits of CastExprBits.BasePathSize!"); 2530 } 2531 2532protected: 2533 CastExpr(StmtClass SC, QualType ty, ExprValueKind VK, 2534 const CastKind kind, Expr *op, unsigned BasePathSize) : 2535 Expr(SC, ty, VK, OK_Ordinary, 2536 // Cast expressions are type-dependent if the type is 2537 // dependent (C++ [temp.dep.expr]p3). 2538 ty->isDependentType(), 2539 // Cast expressions are value-dependent if the type is 2540 // dependent or if the subexpression is value-dependent. 2541 ty->isDependentType() || (op && op->isValueDependent()), 2542 (ty->isInstantiationDependentType() || 2543 (op && op->isInstantiationDependent())), 2544 (ty->containsUnexpandedParameterPack() || 2545 op->containsUnexpandedParameterPack())), 2546 Op(op) { 2547 assert(kind != CK_Invalid && "creating cast with invalid cast kind"); 2548 CastExprBits.Kind = kind; 2549 setBasePathSize(BasePathSize); 2550#ifndef NDEBUG 2551 CheckCastConsistency(); 2552#endif 2553 } 2554 2555 /// \brief Construct an empty cast. 2556 CastExpr(StmtClass SC, EmptyShell Empty, unsigned BasePathSize) 2557 : Expr(SC, Empty) { 2558 setBasePathSize(BasePathSize); 2559 } 2560 2561public: 2562 CastKind getCastKind() const { return (CastKind) CastExprBits.Kind; } 2563 void setCastKind(CastKind K) { CastExprBits.Kind = K; } 2564 const char *getCastKindName() const; 2565 2566 Expr *getSubExpr() { return cast<Expr>(Op); } 2567 const Expr *getSubExpr() const { return cast<Expr>(Op); } 2568 void setSubExpr(Expr *E) { Op = E; } 2569 2570 /// \brief Retrieve the cast subexpression as it was written in the source 2571 /// code, looking through any implicit casts or other intermediate nodes 2572 /// introduced by semantic analysis. 2573 Expr *getSubExprAsWritten(); 2574 const Expr *getSubExprAsWritten() const { 2575 return const_cast<CastExpr *>(this)->getSubExprAsWritten(); 2576 } 2577 2578 typedef CXXBaseSpecifier **path_iterator; 2579 typedef const CXXBaseSpecifier * const *path_const_iterator; 2580 bool path_empty() const { return CastExprBits.BasePathSize == 0; } 2581 unsigned path_size() const { return CastExprBits.BasePathSize; } 2582 path_iterator path_begin() { return path_buffer(); } 2583 path_iterator path_end() { return path_buffer() + path_size(); } 2584 path_const_iterator path_begin() const { return path_buffer(); } 2585 path_const_iterator path_end() const { return path_buffer() + path_size(); } 2586 2587 void setCastPath(const CXXCastPath &Path); 2588 2589 static bool classof(const Stmt *T) { 2590 return T->getStmtClass() >= firstCastExprConstant && 2591 T->getStmtClass() <= lastCastExprConstant; 2592 } 2593 static bool classof(const CastExpr *) { return true; } 2594 2595 // Iterators 2596 child_range children() { return child_range(&Op, &Op+1); } 2597}; 2598 2599/// ImplicitCastExpr - Allows us to explicitly represent implicit type 2600/// conversions, which have no direct representation in the original 2601/// source code. For example: converting T[]->T*, void f()->void 2602/// (*f)(), float->double, short->int, etc. 2603/// 2604/// In C, implicit casts always produce rvalues. However, in C++, an 2605/// implicit cast whose result is being bound to a reference will be 2606/// an lvalue or xvalue. For example: 2607/// 2608/// @code 2609/// class Base { }; 2610/// class Derived : public Base { }; 2611/// Derived &&ref(); 2612/// void f(Derived d) { 2613/// Base& b = d; // initializer is an ImplicitCastExpr 2614/// // to an lvalue of type Base 2615/// Base&& r = ref(); // initializer is an ImplicitCastExpr 2616/// // to an xvalue of type Base 2617/// } 2618/// @endcode 2619class ImplicitCastExpr : public CastExpr { 2620private: 2621 ImplicitCastExpr(QualType ty, CastKind kind, Expr *op, 2622 unsigned BasePathLength, ExprValueKind VK) 2623 : CastExpr(ImplicitCastExprClass, ty, VK, kind, op, BasePathLength) { 2624 } 2625 2626 /// \brief Construct an empty implicit cast. 2627 explicit ImplicitCastExpr(EmptyShell Shell, unsigned PathSize) 2628 : CastExpr(ImplicitCastExprClass, Shell, PathSize) { } 2629 2630public: 2631 enum OnStack_t { OnStack }; 2632 ImplicitCastExpr(OnStack_t _, QualType ty, CastKind kind, Expr *op, 2633 ExprValueKind VK) 2634 : CastExpr(ImplicitCastExprClass, ty, VK, kind, op, 0) { 2635 } 2636 2637 static ImplicitCastExpr *Create(ASTContext &Context, QualType T, 2638 CastKind Kind, Expr *Operand, 2639 const CXXCastPath *BasePath, 2640 ExprValueKind Cat); 2641 2642 static ImplicitCastExpr *CreateEmpty(ASTContext &Context, unsigned PathSize); 2643 2644 SourceRange getSourceRange() const LLVM_READONLY { 2645 return getSubExpr()->getSourceRange(); 2646 } 2647 SourceLocation getLocStart() const LLVM_READONLY { 2648 return getSubExpr()->getLocStart(); 2649 } 2650 SourceLocation getLocEnd() const LLVM_READONLY { 2651 return getSubExpr()->getLocEnd(); 2652 } 2653 2654 static bool classof(const Stmt *T) { 2655 return T->getStmtClass() == ImplicitCastExprClass; 2656 } 2657 static bool classof(const ImplicitCastExpr *) { return true; } 2658}; 2659 2660inline Expr *Expr::IgnoreImpCasts() { 2661 Expr *e = this; 2662 while (ImplicitCastExpr *ice = dyn_cast<ImplicitCastExpr>(e)) 2663 e = ice->getSubExpr(); 2664 return e; 2665} 2666 2667/// ExplicitCastExpr - An explicit cast written in the source 2668/// code. 2669/// 2670/// This class is effectively an abstract class, because it provides 2671/// the basic representation of an explicitly-written cast without 2672/// specifying which kind of cast (C cast, functional cast, static 2673/// cast, etc.) was written; specific derived classes represent the 2674/// particular style of cast and its location information. 2675/// 2676/// Unlike implicit casts, explicit cast nodes have two different 2677/// types: the type that was written into the source code, and the 2678/// actual type of the expression as determined by semantic 2679/// analysis. These types may differ slightly. For example, in C++ one 2680/// can cast to a reference type, which indicates that the resulting 2681/// expression will be an lvalue or xvalue. The reference type, however, 2682/// will not be used as the type of the expression. 2683class ExplicitCastExpr : public CastExpr { 2684 /// TInfo - Source type info for the (written) type 2685 /// this expression is casting to. 2686 TypeSourceInfo *TInfo; 2687 2688protected: 2689 ExplicitCastExpr(StmtClass SC, QualType exprTy, ExprValueKind VK, 2690 CastKind kind, Expr *op, unsigned PathSize, 2691 TypeSourceInfo *writtenTy) 2692 : CastExpr(SC, exprTy, VK, kind, op, PathSize), TInfo(writtenTy) {} 2693 2694 /// \brief Construct an empty explicit cast. 2695 ExplicitCastExpr(StmtClass SC, EmptyShell Shell, unsigned PathSize) 2696 : CastExpr(SC, Shell, PathSize) { } 2697 2698public: 2699 /// getTypeInfoAsWritten - Returns the type source info for the type 2700 /// that this expression is casting to. 2701 TypeSourceInfo *getTypeInfoAsWritten() const { return TInfo; } 2702 void setTypeInfoAsWritten(TypeSourceInfo *writtenTy) { TInfo = writtenTy; } 2703 2704 /// getTypeAsWritten - Returns the type that this expression is 2705 /// casting to, as written in the source code. 2706 QualType getTypeAsWritten() const { return TInfo->getType(); } 2707 2708 static bool classof(const Stmt *T) { 2709 return T->getStmtClass() >= firstExplicitCastExprConstant && 2710 T->getStmtClass() <= lastExplicitCastExprConstant; 2711 } 2712 static bool classof(const ExplicitCastExpr *) { return true; } 2713}; 2714 2715/// CStyleCastExpr - An explicit cast in C (C99 6.5.4) or a C-style 2716/// cast in C++ (C++ [expr.cast]), which uses the syntax 2717/// (Type)expr. For example: @c (int)f. 2718class CStyleCastExpr : public ExplicitCastExpr { 2719 SourceLocation LPLoc; // the location of the left paren 2720 SourceLocation RPLoc; // the location of the right paren 2721 2722 CStyleCastExpr(QualType exprTy, ExprValueKind vk, CastKind kind, Expr *op, 2723 unsigned PathSize, TypeSourceInfo *writtenTy, 2724 SourceLocation l, SourceLocation r) 2725 : ExplicitCastExpr(CStyleCastExprClass, exprTy, vk, kind, op, PathSize, 2726 writtenTy), LPLoc(l), RPLoc(r) {} 2727 2728 /// \brief Construct an empty C-style explicit cast. 2729 explicit CStyleCastExpr(EmptyShell Shell, unsigned PathSize) 2730 : ExplicitCastExpr(CStyleCastExprClass, Shell, PathSize) { } 2731 2732public: 2733 static CStyleCastExpr *Create(ASTContext &Context, QualType T, 2734 ExprValueKind VK, CastKind K, 2735 Expr *Op, const CXXCastPath *BasePath, 2736 TypeSourceInfo *WrittenTy, SourceLocation L, 2737 SourceLocation R); 2738 2739 static CStyleCastExpr *CreateEmpty(ASTContext &Context, unsigned PathSize); 2740 2741 SourceLocation getLParenLoc() const { return LPLoc; } 2742 void setLParenLoc(SourceLocation L) { LPLoc = L; } 2743 2744 SourceLocation getRParenLoc() const { return RPLoc; } 2745 void setRParenLoc(SourceLocation L) { RPLoc = L; } 2746 2747 SourceRange getSourceRange() const LLVM_READONLY { 2748 return SourceRange(LPLoc, getSubExpr()->getSourceRange().getEnd()); 2749 } 2750 static bool classof(const Stmt *T) { 2751 return T->getStmtClass() == CStyleCastExprClass; 2752 } 2753 static bool classof(const CStyleCastExpr *) { return true; } 2754}; 2755 2756/// \brief A builtin binary operation expression such as "x + y" or "x <= y". 2757/// 2758/// This expression node kind describes a builtin binary operation, 2759/// such as "x + y" for integer values "x" and "y". The operands will 2760/// already have been converted to appropriate types (e.g., by 2761/// performing promotions or conversions). 2762/// 2763/// In C++, where operators may be overloaded, a different kind of 2764/// expression node (CXXOperatorCallExpr) is used to express the 2765/// invocation of an overloaded operator with operator syntax. Within 2766/// a C++ template, whether BinaryOperator or CXXOperatorCallExpr is 2767/// used to store an expression "x + y" depends on the subexpressions 2768/// for x and y. If neither x or y is type-dependent, and the "+" 2769/// operator resolves to a built-in operation, BinaryOperator will be 2770/// used to express the computation (x and y may still be 2771/// value-dependent). If either x or y is type-dependent, or if the 2772/// "+" resolves to an overloaded operator, CXXOperatorCallExpr will 2773/// be used to express the computation. 2774class BinaryOperator : public Expr { 2775public: 2776 typedef BinaryOperatorKind Opcode; 2777 2778private: 2779 unsigned Opc : 6; 2780 SourceLocation OpLoc; 2781 2782 enum { LHS, RHS, END_EXPR }; 2783 Stmt* SubExprs[END_EXPR]; 2784public: 2785 2786 BinaryOperator(Expr *lhs, Expr *rhs, Opcode opc, QualType ResTy, 2787 ExprValueKind VK, ExprObjectKind OK, 2788 SourceLocation opLoc) 2789 : Expr(BinaryOperatorClass, ResTy, VK, OK, 2790 lhs->isTypeDependent() || rhs->isTypeDependent(), 2791 lhs->isValueDependent() || rhs->isValueDependent(), 2792 (lhs->isInstantiationDependent() || 2793 rhs->isInstantiationDependent()), 2794 (lhs->containsUnexpandedParameterPack() || 2795 rhs->containsUnexpandedParameterPack())), 2796 Opc(opc), OpLoc(opLoc) { 2797 SubExprs[LHS] = lhs; 2798 SubExprs[RHS] = rhs; 2799 assert(!isCompoundAssignmentOp() && 2800 "Use ArithAssignBinaryOperator for compound assignments"); 2801 } 2802 2803 /// \brief Construct an empty binary operator. 2804 explicit BinaryOperator(EmptyShell Empty) 2805 : Expr(BinaryOperatorClass, Empty), Opc(BO_Comma) { } 2806 2807 SourceLocation getExprLoc() const LLVM_READONLY { return OpLoc; } 2808 SourceLocation getOperatorLoc() const { return OpLoc; } 2809 void setOperatorLoc(SourceLocation L) { OpLoc = L; } 2810 2811 Opcode getOpcode() const { return static_cast<Opcode>(Opc); } 2812 void setOpcode(Opcode O) { Opc = O; } 2813 2814 Expr *getLHS() const { return cast<Expr>(SubExprs[LHS]); } 2815 void setLHS(Expr *E) { SubExprs[LHS] = E; } 2816 Expr *getRHS() const { return cast<Expr>(SubExprs[RHS]); } 2817 void setRHS(Expr *E) { SubExprs[RHS] = E; } 2818 2819 SourceRange getSourceRange() const LLVM_READONLY { 2820 return SourceRange(getLHS()->getLocStart(), getRHS()->getLocEnd()); 2821 } 2822 2823 /// getOpcodeStr - Turn an Opcode enum value into the punctuation char it 2824 /// corresponds to, e.g. "<<=". 2825 static const char *getOpcodeStr(Opcode Op); 2826 2827 const char *getOpcodeStr() const { return getOpcodeStr(getOpcode()); } 2828 2829 /// \brief Retrieve the binary opcode that corresponds to the given 2830 /// overloaded operator. 2831 static Opcode getOverloadedOpcode(OverloadedOperatorKind OO); 2832 2833 /// \brief Retrieve the overloaded operator kind that corresponds to 2834 /// the given binary opcode. 2835 static OverloadedOperatorKind getOverloadedOperator(Opcode Opc); 2836 2837 /// predicates to categorize the respective opcodes. 2838 bool isPtrMemOp() const { return Opc == BO_PtrMemD || Opc == BO_PtrMemI; } 2839 bool isMultiplicativeOp() const { return Opc >= BO_Mul && Opc <= BO_Rem; } 2840 static bool isAdditiveOp(Opcode Opc) { return Opc == BO_Add || Opc==BO_Sub; } 2841 bool isAdditiveOp() const { return isAdditiveOp(getOpcode()); } 2842 static bool isShiftOp(Opcode Opc) { return Opc == BO_Shl || Opc == BO_Shr; } 2843 bool isShiftOp() const { return isShiftOp(getOpcode()); } 2844 2845 static bool isBitwiseOp(Opcode Opc) { return Opc >= BO_And && Opc <= BO_Or; } 2846 bool isBitwiseOp() const { return isBitwiseOp(getOpcode()); } 2847 2848 static bool isRelationalOp(Opcode Opc) { return Opc >= BO_LT && Opc<=BO_GE; } 2849 bool isRelationalOp() const { return isRelationalOp(getOpcode()); } 2850 2851 static bool isEqualityOp(Opcode Opc) { return Opc == BO_EQ || Opc == BO_NE; } 2852 bool isEqualityOp() const { return isEqualityOp(getOpcode()); } 2853 2854 static bool isComparisonOp(Opcode Opc) { return Opc >= BO_LT && Opc<=BO_NE; } 2855 bool isComparisonOp() const { return isComparisonOp(getOpcode()); } 2856 2857 static bool isLogicalOp(Opcode Opc) { return Opc == BO_LAnd || Opc==BO_LOr; } 2858 bool isLogicalOp() const { return isLogicalOp(getOpcode()); } 2859 2860 static bool isAssignmentOp(Opcode Opc) { 2861 return Opc >= BO_Assign && Opc <= BO_OrAssign; 2862 } 2863 bool isAssignmentOp() const { return isAssignmentOp(getOpcode()); } 2864 2865 static bool isCompoundAssignmentOp(Opcode Opc) { 2866 return Opc > BO_Assign && Opc <= BO_OrAssign; 2867 } 2868 bool isCompoundAssignmentOp() const { 2869 return isCompoundAssignmentOp(getOpcode()); 2870 } 2871 static Opcode getOpForCompoundAssignment(Opcode Opc) { 2872 assert(isCompoundAssignmentOp(Opc)); 2873 if (Opc >= BO_AndAssign) 2874 return Opcode(unsigned(Opc) - BO_AndAssign + BO_And); 2875 else 2876 return Opcode(unsigned(Opc) - BO_MulAssign + BO_Mul); 2877 } 2878 2879 static bool isShiftAssignOp(Opcode Opc) { 2880 return Opc == BO_ShlAssign || Opc == BO_ShrAssign; 2881 } 2882 bool isShiftAssignOp() const { 2883 return isShiftAssignOp(getOpcode()); 2884 } 2885 2886 static bool classof(const Stmt *S) { 2887 return S->getStmtClass() >= firstBinaryOperatorConstant && 2888 S->getStmtClass() <= lastBinaryOperatorConstant; 2889 } 2890 static bool classof(const BinaryOperator *) { return true; } 2891 2892 // Iterators 2893 child_range children() { 2894 return child_range(&SubExprs[0], &SubExprs[0]+END_EXPR); 2895 } 2896 2897protected: 2898 BinaryOperator(Expr *lhs, Expr *rhs, Opcode opc, QualType ResTy, 2899 ExprValueKind VK, ExprObjectKind OK, 2900 SourceLocation opLoc, bool dead) 2901 : Expr(CompoundAssignOperatorClass, ResTy, VK, OK, 2902 lhs->isTypeDependent() || rhs->isTypeDependent(), 2903 lhs->isValueDependent() || rhs->isValueDependent(), 2904 (lhs->isInstantiationDependent() || 2905 rhs->isInstantiationDependent()), 2906 (lhs->containsUnexpandedParameterPack() || 2907 rhs->containsUnexpandedParameterPack())), 2908 Opc(opc), OpLoc(opLoc) { 2909 SubExprs[LHS] = lhs; 2910 SubExprs[RHS] = rhs; 2911 } 2912 2913 BinaryOperator(StmtClass SC, EmptyShell Empty) 2914 : Expr(SC, Empty), Opc(BO_MulAssign) { } 2915}; 2916 2917/// CompoundAssignOperator - For compound assignments (e.g. +=), we keep 2918/// track of the type the operation is performed in. Due to the semantics of 2919/// these operators, the operands are promoted, the arithmetic performed, an 2920/// implicit conversion back to the result type done, then the assignment takes 2921/// place. This captures the intermediate type which the computation is done 2922/// in. 2923class CompoundAssignOperator : public BinaryOperator { 2924 QualType ComputationLHSType; 2925 QualType ComputationResultType; 2926public: 2927 CompoundAssignOperator(Expr *lhs, Expr *rhs, Opcode opc, QualType ResType, 2928 ExprValueKind VK, ExprObjectKind OK, 2929 QualType CompLHSType, QualType CompResultType, 2930 SourceLocation OpLoc) 2931 : BinaryOperator(lhs, rhs, opc, ResType, VK, OK, OpLoc, true), 2932 ComputationLHSType(CompLHSType), 2933 ComputationResultType(CompResultType) { 2934 assert(isCompoundAssignmentOp() && 2935 "Only should be used for compound assignments"); 2936 } 2937 2938 /// \brief Build an empty compound assignment operator expression. 2939 explicit CompoundAssignOperator(EmptyShell Empty) 2940 : BinaryOperator(CompoundAssignOperatorClass, Empty) { } 2941 2942 // The two computation types are the type the LHS is converted 2943 // to for the computation and the type of the result; the two are 2944 // distinct in a few cases (specifically, int+=ptr and ptr-=ptr). 2945 QualType getComputationLHSType() const { return ComputationLHSType; } 2946 void setComputationLHSType(QualType T) { ComputationLHSType = T; } 2947 2948 QualType getComputationResultType() const { return ComputationResultType; } 2949 void setComputationResultType(QualType T) { ComputationResultType = T; } 2950 2951 static bool classof(const CompoundAssignOperator *) { return true; } 2952 static bool classof(const Stmt *S) { 2953 return S->getStmtClass() == CompoundAssignOperatorClass; 2954 } 2955}; 2956 2957/// AbstractConditionalOperator - An abstract base class for 2958/// ConditionalOperator and BinaryConditionalOperator. 2959class AbstractConditionalOperator : public Expr { 2960 SourceLocation QuestionLoc, ColonLoc; 2961 friend class ASTStmtReader; 2962 2963protected: 2964 AbstractConditionalOperator(StmtClass SC, QualType T, 2965 ExprValueKind VK, ExprObjectKind OK, 2966 bool TD, bool VD, bool ID, 2967 bool ContainsUnexpandedParameterPack, 2968 SourceLocation qloc, 2969 SourceLocation cloc) 2970 : Expr(SC, T, VK, OK, TD, VD, ID, ContainsUnexpandedParameterPack), 2971 QuestionLoc(qloc), ColonLoc(cloc) {} 2972 2973 AbstractConditionalOperator(StmtClass SC, EmptyShell Empty) 2974 : Expr(SC, Empty) { } 2975 2976public: 2977 // getCond - Return the expression representing the condition for 2978 // the ?: operator. 2979 Expr *getCond() const; 2980 2981 // getTrueExpr - Return the subexpression representing the value of 2982 // the expression if the condition evaluates to true. 2983 Expr *getTrueExpr() const; 2984 2985 // getFalseExpr - Return the subexpression representing the value of 2986 // the expression if the condition evaluates to false. This is 2987 // the same as getRHS. 2988 Expr *getFalseExpr() const; 2989 2990 SourceLocation getQuestionLoc() const { return QuestionLoc; } 2991 SourceLocation getColonLoc() const { return ColonLoc; } 2992 2993 static bool classof(const Stmt *T) { 2994 return T->getStmtClass() == ConditionalOperatorClass || 2995 T->getStmtClass() == BinaryConditionalOperatorClass; 2996 } 2997 static bool classof(const AbstractConditionalOperator *) { return true; } 2998}; 2999 3000/// ConditionalOperator - The ?: ternary operator. The GNU "missing 3001/// middle" extension is a BinaryConditionalOperator. 3002class ConditionalOperator : public AbstractConditionalOperator { 3003 enum { COND, LHS, RHS, END_EXPR }; 3004 Stmt* SubExprs[END_EXPR]; // Left/Middle/Right hand sides. 3005 3006 friend class ASTStmtReader; 3007public: 3008 ConditionalOperator(Expr *cond, SourceLocation QLoc, Expr *lhs, 3009 SourceLocation CLoc, Expr *rhs, 3010 QualType t, ExprValueKind VK, ExprObjectKind OK) 3011 : AbstractConditionalOperator(ConditionalOperatorClass, t, VK, OK, 3012 // FIXME: the type of the conditional operator doesn't 3013 // depend on the type of the conditional, but the standard 3014 // seems to imply that it could. File a bug! 3015 (lhs->isTypeDependent() || rhs->isTypeDependent()), 3016 (cond->isValueDependent() || lhs->isValueDependent() || 3017 rhs->isValueDependent()), 3018 (cond->isInstantiationDependent() || 3019 lhs->isInstantiationDependent() || 3020 rhs->isInstantiationDependent()), 3021 (cond->containsUnexpandedParameterPack() || 3022 lhs->containsUnexpandedParameterPack() || 3023 rhs->containsUnexpandedParameterPack()), 3024 QLoc, CLoc) { 3025 SubExprs[COND] = cond; 3026 SubExprs[LHS] = lhs; 3027 SubExprs[RHS] = rhs; 3028 } 3029 3030 /// \brief Build an empty conditional operator. 3031 explicit ConditionalOperator(EmptyShell Empty) 3032 : AbstractConditionalOperator(ConditionalOperatorClass, Empty) { } 3033 3034 // getCond - Return the expression representing the condition for 3035 // the ?: operator. 3036 Expr *getCond() const { return cast<Expr>(SubExprs[COND]); } 3037 3038 // getTrueExpr - Return the subexpression representing the value of 3039 // the expression if the condition evaluates to true. 3040 Expr *getTrueExpr() const { return cast<Expr>(SubExprs[LHS]); } 3041 3042 // getFalseExpr - Return the subexpression representing the value of 3043 // the expression if the condition evaluates to false. This is 3044 // the same as getRHS. 3045 Expr *getFalseExpr() const { return cast<Expr>(SubExprs[RHS]); } 3046 3047 Expr *getLHS() const { return cast<Expr>(SubExprs[LHS]); } 3048 Expr *getRHS() const { return cast<Expr>(SubExprs[RHS]); } 3049 3050 SourceRange getSourceRange() const LLVM_READONLY { 3051 return SourceRange(getCond()->getLocStart(), getRHS()->getLocEnd()); 3052 } 3053 static bool classof(const Stmt *T) { 3054 return T->getStmtClass() == ConditionalOperatorClass; 3055 } 3056 static bool classof(const ConditionalOperator *) { return true; } 3057 3058 // Iterators 3059 child_range children() { 3060 return child_range(&SubExprs[0], &SubExprs[0]+END_EXPR); 3061 } 3062}; 3063 3064/// BinaryConditionalOperator - The GNU extension to the conditional 3065/// operator which allows the middle operand to be omitted. 3066/// 3067/// This is a different expression kind on the assumption that almost 3068/// every client ends up needing to know that these are different. 3069class BinaryConditionalOperator : public AbstractConditionalOperator { 3070 enum { COMMON, COND, LHS, RHS, NUM_SUBEXPRS }; 3071 3072 /// - the common condition/left-hand-side expression, which will be 3073 /// evaluated as the opaque value 3074 /// - the condition, expressed in terms of the opaque value 3075 /// - the left-hand-side, expressed in terms of the opaque value 3076 /// - the right-hand-side 3077 Stmt *SubExprs[NUM_SUBEXPRS]; 3078 OpaqueValueExpr *OpaqueValue; 3079 3080 friend class ASTStmtReader; 3081public: 3082 BinaryConditionalOperator(Expr *common, OpaqueValueExpr *opaqueValue, 3083 Expr *cond, Expr *lhs, Expr *rhs, 3084 SourceLocation qloc, SourceLocation cloc, 3085 QualType t, ExprValueKind VK, ExprObjectKind OK) 3086 : AbstractConditionalOperator(BinaryConditionalOperatorClass, t, VK, OK, 3087 (common->isTypeDependent() || rhs->isTypeDependent()), 3088 (common->isValueDependent() || rhs->isValueDependent()), 3089 (common->isInstantiationDependent() || 3090 rhs->isInstantiationDependent()), 3091 (common->containsUnexpandedParameterPack() || 3092 rhs->containsUnexpandedParameterPack()), 3093 qloc, cloc), 3094 OpaqueValue(opaqueValue) { 3095 SubExprs[COMMON] = common; 3096 SubExprs[COND] = cond; 3097 SubExprs[LHS] = lhs; 3098 SubExprs[RHS] = rhs; 3099 assert(OpaqueValue->getSourceExpr() == common && "Wrong opaque value"); 3100 } 3101 3102 /// \brief Build an empty conditional operator. 3103 explicit BinaryConditionalOperator(EmptyShell Empty) 3104 : AbstractConditionalOperator(BinaryConditionalOperatorClass, Empty) { } 3105 3106 /// \brief getCommon - Return the common expression, written to the 3107 /// left of the condition. The opaque value will be bound to the 3108 /// result of this expression. 3109 Expr *getCommon() const { return cast<Expr>(SubExprs[COMMON]); } 3110 3111 /// \brief getOpaqueValue - Return the opaque value placeholder. 3112 OpaqueValueExpr *getOpaqueValue() const { return OpaqueValue; } 3113 3114 /// \brief getCond - Return the condition expression; this is defined 3115 /// in terms of the opaque value. 3116 Expr *getCond() const { return cast<Expr>(SubExprs[COND]); } 3117 3118 /// \brief getTrueExpr - Return the subexpression which will be 3119 /// evaluated if the condition evaluates to true; this is defined 3120 /// in terms of the opaque value. 3121 Expr *getTrueExpr() const { 3122 return cast<Expr>(SubExprs[LHS]); 3123 } 3124 3125 /// \brief getFalseExpr - Return the subexpression which will be 3126 /// evaluated if the condnition evaluates to false; this is 3127 /// defined in terms of the opaque value. 3128 Expr *getFalseExpr() const { 3129 return cast<Expr>(SubExprs[RHS]); 3130 } 3131 3132 SourceRange getSourceRange() const LLVM_READONLY { 3133 return SourceRange(getCommon()->getLocStart(), getFalseExpr()->getLocEnd()); 3134 } 3135 static bool classof(const Stmt *T) { 3136 return T->getStmtClass() == BinaryConditionalOperatorClass; 3137 } 3138 static bool classof(const BinaryConditionalOperator *) { return true; } 3139 3140 // Iterators 3141 child_range children() { 3142 return child_range(SubExprs, SubExprs + NUM_SUBEXPRS); 3143 } 3144}; 3145 3146inline Expr *AbstractConditionalOperator::getCond() const { 3147 if (const ConditionalOperator *co = dyn_cast<ConditionalOperator>(this)) 3148 return co->getCond(); 3149 return cast<BinaryConditionalOperator>(this)->getCond(); 3150} 3151 3152inline Expr *AbstractConditionalOperator::getTrueExpr() const { 3153 if (const ConditionalOperator *co = dyn_cast<ConditionalOperator>(this)) 3154 return co->getTrueExpr(); 3155 return cast<BinaryConditionalOperator>(this)->getTrueExpr(); 3156} 3157 3158inline Expr *AbstractConditionalOperator::getFalseExpr() const { 3159 if (const ConditionalOperator *co = dyn_cast<ConditionalOperator>(this)) 3160 return co->getFalseExpr(); 3161 return cast<BinaryConditionalOperator>(this)->getFalseExpr(); 3162} 3163 3164/// AddrLabelExpr - The GNU address of label extension, representing &&label. 3165class AddrLabelExpr : public Expr { 3166 SourceLocation AmpAmpLoc, LabelLoc; 3167 LabelDecl *Label; 3168public: 3169 AddrLabelExpr(SourceLocation AALoc, SourceLocation LLoc, LabelDecl *L, 3170 QualType t) 3171 : Expr(AddrLabelExprClass, t, VK_RValue, OK_Ordinary, false, false, false, 3172 false), 3173 AmpAmpLoc(AALoc), LabelLoc(LLoc), Label(L) {} 3174 3175 /// \brief Build an empty address of a label expression. 3176 explicit AddrLabelExpr(EmptyShell Empty) 3177 : Expr(AddrLabelExprClass, Empty) { } 3178 3179 SourceLocation getAmpAmpLoc() const { return AmpAmpLoc; } 3180 void setAmpAmpLoc(SourceLocation L) { AmpAmpLoc = L; } 3181 SourceLocation getLabelLoc() const { return LabelLoc; } 3182 void setLabelLoc(SourceLocation L) { LabelLoc = L; } 3183 3184 SourceRange getSourceRange() const LLVM_READONLY { 3185 return SourceRange(AmpAmpLoc, LabelLoc); 3186 } 3187 3188 LabelDecl *getLabel() const { return Label; } 3189 void setLabel(LabelDecl *L) { Label = L; } 3190 3191 static bool classof(const Stmt *T) { 3192 return T->getStmtClass() == AddrLabelExprClass; 3193 } 3194 static bool classof(const AddrLabelExpr *) { return true; } 3195 3196 // Iterators 3197 child_range children() { return child_range(); } 3198}; 3199 3200/// StmtExpr - This is the GNU Statement Expression extension: ({int X=4; X;}). 3201/// The StmtExpr contains a single CompoundStmt node, which it evaluates and 3202/// takes the value of the last subexpression. 3203/// 3204/// A StmtExpr is always an r-value; values "returned" out of a 3205/// StmtExpr will be copied. 3206class StmtExpr : public Expr { 3207 Stmt *SubStmt; 3208 SourceLocation LParenLoc, RParenLoc; 3209public: 3210 // FIXME: Does type-dependence need to be computed differently? 3211 // FIXME: Do we need to compute instantiation instantiation-dependence for 3212 // statements? (ugh!) 3213 StmtExpr(CompoundStmt *substmt, QualType T, 3214 SourceLocation lp, SourceLocation rp) : 3215 Expr(StmtExprClass, T, VK_RValue, OK_Ordinary, 3216 T->isDependentType(), false, false, false), 3217 SubStmt(substmt), LParenLoc(lp), RParenLoc(rp) { } 3218 3219 /// \brief Build an empty statement expression. 3220 explicit StmtExpr(EmptyShell Empty) : Expr(StmtExprClass, Empty) { } 3221 3222 CompoundStmt *getSubStmt() { return cast<CompoundStmt>(SubStmt); } 3223 const CompoundStmt *getSubStmt() const { return cast<CompoundStmt>(SubStmt); } 3224 void setSubStmt(CompoundStmt *S) { SubStmt = S; } 3225 3226 SourceRange getSourceRange() const LLVM_READONLY { 3227 return SourceRange(LParenLoc, RParenLoc); 3228 } 3229 3230 SourceLocation getLParenLoc() const { return LParenLoc; } 3231 void setLParenLoc(SourceLocation L) { LParenLoc = L; } 3232 SourceLocation getRParenLoc() const { return RParenLoc; } 3233 void setRParenLoc(SourceLocation L) { RParenLoc = L; } 3234 3235 static bool classof(const Stmt *T) { 3236 return T->getStmtClass() == StmtExprClass; 3237 } 3238 static bool classof(const StmtExpr *) { return true; } 3239 3240 // Iterators 3241 child_range children() { return child_range(&SubStmt, &SubStmt+1); } 3242}; 3243 3244 3245/// ShuffleVectorExpr - clang-specific builtin-in function 3246/// __builtin_shufflevector. 3247/// This AST node represents a operator that does a constant 3248/// shuffle, similar to LLVM's shufflevector instruction. It takes 3249/// two vectors and a variable number of constant indices, 3250/// and returns the appropriately shuffled vector. 3251class ShuffleVectorExpr : public Expr { 3252 SourceLocation BuiltinLoc, RParenLoc; 3253 3254 // SubExprs - the list of values passed to the __builtin_shufflevector 3255 // function. The first two are vectors, and the rest are constant 3256 // indices. The number of values in this list is always 3257 // 2+the number of indices in the vector type. 3258 Stmt **SubExprs; 3259 unsigned NumExprs; 3260 3261public: 3262 ShuffleVectorExpr(ASTContext &C, Expr **args, unsigned nexpr, 3263 QualType Type, SourceLocation BLoc, 3264 SourceLocation RP); 3265 3266 /// \brief Build an empty vector-shuffle expression. 3267 explicit ShuffleVectorExpr(EmptyShell Empty) 3268 : Expr(ShuffleVectorExprClass, Empty), SubExprs(0) { } 3269 3270 SourceLocation getBuiltinLoc() const { return BuiltinLoc; } 3271 void setBuiltinLoc(SourceLocation L) { BuiltinLoc = L; } 3272 3273 SourceLocation getRParenLoc() const { return RParenLoc; } 3274 void setRParenLoc(SourceLocation L) { RParenLoc = L; } 3275 3276 SourceRange getSourceRange() const LLVM_READONLY { 3277 return SourceRange(BuiltinLoc, RParenLoc); 3278 } 3279 static bool classof(const Stmt *T) { 3280 return T->getStmtClass() == ShuffleVectorExprClass; 3281 } 3282 static bool classof(const ShuffleVectorExpr *) { return true; } 3283 3284 /// getNumSubExprs - Return the size of the SubExprs array. This includes the 3285 /// constant expression, the actual arguments passed in, and the function 3286 /// pointers. 3287 unsigned getNumSubExprs() const { return NumExprs; } 3288 3289 /// \brief Retrieve the array of expressions. 3290 Expr **getSubExprs() { return reinterpret_cast<Expr **>(SubExprs); } 3291 3292 /// getExpr - Return the Expr at the specified index. 3293 Expr *getExpr(unsigned Index) { 3294 assert((Index < NumExprs) && "Arg access out of range!"); 3295 return cast<Expr>(SubExprs[Index]); 3296 } 3297 const Expr *getExpr(unsigned Index) const { 3298 assert((Index < NumExprs) && "Arg access out of range!"); 3299 return cast<Expr>(SubExprs[Index]); 3300 } 3301 3302 void setExprs(ASTContext &C, Expr ** Exprs, unsigned NumExprs); 3303 3304 unsigned getShuffleMaskIdx(ASTContext &Ctx, unsigned N) { 3305 assert((N < NumExprs - 2) && "Shuffle idx out of range!"); 3306 return getExpr(N+2)->EvaluateKnownConstInt(Ctx).getZExtValue(); 3307 } 3308 3309 // Iterators 3310 child_range children() { 3311 return child_range(&SubExprs[0], &SubExprs[0]+NumExprs); 3312 } 3313}; 3314 3315/// ChooseExpr - GNU builtin-in function __builtin_choose_expr. 3316/// This AST node is similar to the conditional operator (?:) in C, with 3317/// the following exceptions: 3318/// - the test expression must be a integer constant expression. 3319/// - the expression returned acts like the chosen subexpression in every 3320/// visible way: the type is the same as that of the chosen subexpression, 3321/// and all predicates (whether it's an l-value, whether it's an integer 3322/// constant expression, etc.) return the same result as for the chosen 3323/// sub-expression. 3324class ChooseExpr : public Expr { 3325 enum { COND, LHS, RHS, END_EXPR }; 3326 Stmt* SubExprs[END_EXPR]; // Left/Middle/Right hand sides. 3327 SourceLocation BuiltinLoc, RParenLoc; 3328public: 3329 ChooseExpr(SourceLocation BLoc, Expr *cond, Expr *lhs, Expr *rhs, 3330 QualType t, ExprValueKind VK, ExprObjectKind OK, 3331 SourceLocation RP, bool TypeDependent, bool ValueDependent) 3332 : Expr(ChooseExprClass, t, VK, OK, TypeDependent, ValueDependent, 3333 (cond->isInstantiationDependent() || 3334 lhs->isInstantiationDependent() || 3335 rhs->isInstantiationDependent()), 3336 (cond->containsUnexpandedParameterPack() || 3337 lhs->containsUnexpandedParameterPack() || 3338 rhs->containsUnexpandedParameterPack())), 3339 BuiltinLoc(BLoc), RParenLoc(RP) { 3340 SubExprs[COND] = cond; 3341 SubExprs[LHS] = lhs; 3342 SubExprs[RHS] = rhs; 3343 } 3344 3345 /// \brief Build an empty __builtin_choose_expr. 3346 explicit ChooseExpr(EmptyShell Empty) : Expr(ChooseExprClass, Empty) { } 3347 3348 /// isConditionTrue - Return whether the condition is true (i.e. not 3349 /// equal to zero). 3350 bool isConditionTrue(const ASTContext &C) const; 3351 3352 /// getChosenSubExpr - Return the subexpression chosen according to the 3353 /// condition. 3354 Expr *getChosenSubExpr(const ASTContext &C) const { 3355 return isConditionTrue(C) ? getLHS() : getRHS(); 3356 } 3357 3358 Expr *getCond() const { return cast<Expr>(SubExprs[COND]); } 3359 void setCond(Expr *E) { SubExprs[COND] = E; } 3360 Expr *getLHS() const { return cast<Expr>(SubExprs[LHS]); } 3361 void setLHS(Expr *E) { SubExprs[LHS] = E; } 3362 Expr *getRHS() const { return cast<Expr>(SubExprs[RHS]); } 3363 void setRHS(Expr *E) { SubExprs[RHS] = E; } 3364 3365 SourceLocation getBuiltinLoc() const { return BuiltinLoc; } 3366 void setBuiltinLoc(SourceLocation L) { BuiltinLoc = L; } 3367 3368 SourceLocation getRParenLoc() const { return RParenLoc; } 3369 void setRParenLoc(SourceLocation L) { RParenLoc = L; } 3370 3371 SourceRange getSourceRange() const LLVM_READONLY { 3372 return SourceRange(BuiltinLoc, RParenLoc); 3373 } 3374 static bool classof(const Stmt *T) { 3375 return T->getStmtClass() == ChooseExprClass; 3376 } 3377 static bool classof(const ChooseExpr *) { return true; } 3378 3379 // Iterators 3380 child_range children() { 3381 return child_range(&SubExprs[0], &SubExprs[0]+END_EXPR); 3382 } 3383}; 3384 3385/// GNUNullExpr - Implements the GNU __null extension, which is a name 3386/// for a null pointer constant that has integral type (e.g., int or 3387/// long) and is the same size and alignment as a pointer. The __null 3388/// extension is typically only used by system headers, which define 3389/// NULL as __null in C++ rather than using 0 (which is an integer 3390/// that may not match the size of a pointer). 3391class GNUNullExpr : public Expr { 3392 /// TokenLoc - The location of the __null keyword. 3393 SourceLocation TokenLoc; 3394 3395public: 3396 GNUNullExpr(QualType Ty, SourceLocation Loc) 3397 : Expr(GNUNullExprClass, Ty, VK_RValue, OK_Ordinary, false, false, false, 3398 false), 3399 TokenLoc(Loc) { } 3400 3401 /// \brief Build an empty GNU __null expression. 3402 explicit GNUNullExpr(EmptyShell Empty) : Expr(GNUNullExprClass, Empty) { } 3403 3404 /// getTokenLocation - The location of the __null token. 3405 SourceLocation getTokenLocation() const { return TokenLoc; } 3406 void setTokenLocation(SourceLocation L) { TokenLoc = L; } 3407 3408 SourceRange getSourceRange() const LLVM_READONLY { 3409 return SourceRange(TokenLoc); 3410 } 3411 static bool classof(const Stmt *T) { 3412 return T->getStmtClass() == GNUNullExprClass; 3413 } 3414 static bool classof(const GNUNullExpr *) { return true; } 3415 3416 // Iterators 3417 child_range children() { return child_range(); } 3418}; 3419 3420/// VAArgExpr, used for the builtin function __builtin_va_arg. 3421class VAArgExpr : public Expr { 3422 Stmt *Val; 3423 TypeSourceInfo *TInfo; 3424 SourceLocation BuiltinLoc, RParenLoc; 3425public: 3426 VAArgExpr(SourceLocation BLoc, Expr* e, TypeSourceInfo *TInfo, 3427 SourceLocation RPLoc, QualType t) 3428 : Expr(VAArgExprClass, t, VK_RValue, OK_Ordinary, 3429 t->isDependentType(), false, 3430 (TInfo->getType()->isInstantiationDependentType() || 3431 e->isInstantiationDependent()), 3432 (TInfo->getType()->containsUnexpandedParameterPack() || 3433 e->containsUnexpandedParameterPack())), 3434 Val(e), TInfo(TInfo), 3435 BuiltinLoc(BLoc), 3436 RParenLoc(RPLoc) { } 3437 3438 /// \brief Create an empty __builtin_va_arg expression. 3439 explicit VAArgExpr(EmptyShell Empty) : Expr(VAArgExprClass, Empty) { } 3440 3441 const Expr *getSubExpr() const { return cast<Expr>(Val); } 3442 Expr *getSubExpr() { return cast<Expr>(Val); } 3443 void setSubExpr(Expr *E) { Val = E; } 3444 3445 TypeSourceInfo *getWrittenTypeInfo() const { return TInfo; } 3446 void setWrittenTypeInfo(TypeSourceInfo *TI) { TInfo = TI; } 3447 3448 SourceLocation getBuiltinLoc() const { return BuiltinLoc; } 3449 void setBuiltinLoc(SourceLocation L) { BuiltinLoc = L; } 3450 3451 SourceLocation getRParenLoc() const { return RParenLoc; } 3452 void setRParenLoc(SourceLocation L) { RParenLoc = L; } 3453 3454 SourceRange getSourceRange() const LLVM_READONLY { 3455 return SourceRange(BuiltinLoc, RParenLoc); 3456 } 3457 static bool classof(const Stmt *T) { 3458 return T->getStmtClass() == VAArgExprClass; 3459 } 3460 static bool classof(const VAArgExpr *) { return true; } 3461 3462 // Iterators 3463 child_range children() { return child_range(&Val, &Val+1); } 3464}; 3465 3466/// @brief Describes an C or C++ initializer list. 3467/// 3468/// InitListExpr describes an initializer list, which can be used to 3469/// initialize objects of different types, including 3470/// struct/class/union types, arrays, and vectors. For example: 3471/// 3472/// @code 3473/// struct foo x = { 1, { 2, 3 } }; 3474/// @endcode 3475/// 3476/// Prior to semantic analysis, an initializer list will represent the 3477/// initializer list as written by the user, but will have the 3478/// placeholder type "void". This initializer list is called the 3479/// syntactic form of the initializer, and may contain C99 designated 3480/// initializers (represented as DesignatedInitExprs), initializations 3481/// of subobject members without explicit braces, and so on. Clients 3482/// interested in the original syntax of the initializer list should 3483/// use the syntactic form of the initializer list. 3484/// 3485/// After semantic analysis, the initializer list will represent the 3486/// semantic form of the initializer, where the initializations of all 3487/// subobjects are made explicit with nested InitListExpr nodes and 3488/// C99 designators have been eliminated by placing the designated 3489/// initializations into the subobject they initialize. Additionally, 3490/// any "holes" in the initialization, where no initializer has been 3491/// specified for a particular subobject, will be replaced with 3492/// implicitly-generated ImplicitValueInitExpr expressions that 3493/// value-initialize the subobjects. Note, however, that the 3494/// initializer lists may still have fewer initializers than there are 3495/// elements to initialize within the object. 3496/// 3497/// Given the semantic form of the initializer list, one can retrieve 3498/// the original syntactic form of that initializer list (if it 3499/// exists) using getSyntacticForm(). Since many initializer lists 3500/// have the same syntactic and semantic forms, getSyntacticForm() may 3501/// return NULL, indicating that the current initializer list also 3502/// serves as its syntactic form. 3503class InitListExpr : public Expr { 3504 // FIXME: Eliminate this vector in favor of ASTContext allocation 3505 typedef ASTVector<Stmt *> InitExprsTy; 3506 InitExprsTy InitExprs; 3507 SourceLocation LBraceLoc, RBraceLoc; 3508 3509 /// Contains the initializer list that describes the syntactic form 3510 /// written in the source code. 3511 InitListExpr *SyntacticForm; 3512 3513 /// \brief Either: 3514 /// If this initializer list initializes an array with more elements than 3515 /// there are initializers in the list, specifies an expression to be used 3516 /// for value initialization of the rest of the elements. 3517 /// Or 3518 /// If this initializer list initializes a union, specifies which 3519 /// field within the union will be initialized. 3520 llvm::PointerUnion<Expr *, FieldDecl *> ArrayFillerOrUnionFieldInit; 3521 3522public: 3523 InitListExpr(ASTContext &C, SourceLocation lbraceloc, 3524 Expr **initexprs, unsigned numinits, 3525 SourceLocation rbraceloc); 3526 3527 /// \brief Build an empty initializer list. 3528 explicit InitListExpr(ASTContext &C, EmptyShell Empty) 3529 : Expr(InitListExprClass, Empty), InitExprs(C) { } 3530 3531 unsigned getNumInits() const { return InitExprs.size(); } 3532 3533 /// \brief Retrieve the set of initializers. 3534 Expr **getInits() { return reinterpret_cast<Expr **>(InitExprs.data()); } 3535 3536 const Expr *getInit(unsigned Init) const { 3537 assert(Init < getNumInits() && "Initializer access out of range!"); 3538 return cast_or_null<Expr>(InitExprs[Init]); 3539 } 3540 3541 Expr *getInit(unsigned Init) { 3542 assert(Init < getNumInits() && "Initializer access out of range!"); 3543 return cast_or_null<Expr>(InitExprs[Init]); 3544 } 3545 3546 void setInit(unsigned Init, Expr *expr) { 3547 assert(Init < getNumInits() && "Initializer access out of range!"); 3548 InitExprs[Init] = expr; 3549 } 3550 3551 /// \brief Reserve space for some number of initializers. 3552 void reserveInits(ASTContext &C, unsigned NumInits); 3553 3554 /// @brief Specify the number of initializers 3555 /// 3556 /// If there are more than @p NumInits initializers, the remaining 3557 /// initializers will be destroyed. If there are fewer than @p 3558 /// NumInits initializers, NULL expressions will be added for the 3559 /// unknown initializers. 3560 void resizeInits(ASTContext &Context, unsigned NumInits); 3561 3562 /// @brief Updates the initializer at index @p Init with the new 3563 /// expression @p expr, and returns the old expression at that 3564 /// location. 3565 /// 3566 /// When @p Init is out of range for this initializer list, the 3567 /// initializer list will be extended with NULL expressions to 3568 /// accommodate the new entry. 3569 Expr *updateInit(ASTContext &C, unsigned Init, Expr *expr); 3570 3571 /// \brief If this initializer list initializes an array with more elements 3572 /// than there are initializers in the list, specifies an expression to be 3573 /// used for value initialization of the rest of the elements. 3574 Expr *getArrayFiller() { 3575 return ArrayFillerOrUnionFieldInit.dyn_cast<Expr *>(); 3576 } 3577 const Expr *getArrayFiller() const { 3578 return const_cast<InitListExpr *>(this)->getArrayFiller(); 3579 } 3580 void setArrayFiller(Expr *filler); 3581 3582 /// \brief Return true if this is an array initializer and its array "filler" 3583 /// has been set. 3584 bool hasArrayFiller() const { return getArrayFiller(); } 3585 3586 /// \brief If this initializes a union, specifies which field in the 3587 /// union to initialize. 3588 /// 3589 /// Typically, this field is the first named field within the 3590 /// union. However, a designated initializer can specify the 3591 /// initialization of a different field within the union. 3592 FieldDecl *getInitializedFieldInUnion() { 3593 return ArrayFillerOrUnionFieldInit.dyn_cast<FieldDecl *>(); 3594 } 3595 const FieldDecl *getInitializedFieldInUnion() const { 3596 return const_cast<InitListExpr *>(this)->getInitializedFieldInUnion(); 3597 } 3598 void setInitializedFieldInUnion(FieldDecl *FD) { 3599 ArrayFillerOrUnionFieldInit = FD; 3600 } 3601 3602 // Explicit InitListExpr's originate from source code (and have valid source 3603 // locations). Implicit InitListExpr's are created by the semantic analyzer. 3604 bool isExplicit() { 3605 return LBraceLoc.isValid() && RBraceLoc.isValid(); 3606 } 3607 3608 // Is this an initializer for an array of characters, initialized by a string 3609 // literal or an @encode? 3610 bool isStringLiteralInit() const; 3611 3612 SourceLocation getLBraceLoc() const { return LBraceLoc; } 3613 void setLBraceLoc(SourceLocation Loc) { LBraceLoc = Loc; } 3614 SourceLocation getRBraceLoc() const { return RBraceLoc; } 3615 void setRBraceLoc(SourceLocation Loc) { RBraceLoc = Loc; } 3616 3617 /// @brief Retrieve the initializer list that describes the 3618 /// syntactic form of the initializer. 3619 /// 3620 /// 3621 InitListExpr *getSyntacticForm() const { return SyntacticForm; } 3622 void setSyntacticForm(InitListExpr *Init) { SyntacticForm = Init; } 3623 3624 bool hadArrayRangeDesignator() const { 3625 return InitListExprBits.HadArrayRangeDesignator != 0; 3626 } 3627 void sawArrayRangeDesignator(bool ARD = true) { 3628 InitListExprBits.HadArrayRangeDesignator = ARD; 3629 } 3630 3631 bool initializesStdInitializerList() const { 3632 return InitListExprBits.InitializesStdInitializerList != 0; 3633 } 3634 void setInitializesStdInitializerList(bool ISIL = true) { 3635 InitListExprBits.InitializesStdInitializerList = ISIL; 3636 } 3637 3638 SourceRange getSourceRange() const LLVM_READONLY; 3639 3640 static bool classof(const Stmt *T) { 3641 return T->getStmtClass() == InitListExprClass; 3642 } 3643 static bool classof(const InitListExpr *) { return true; } 3644 3645 // Iterators 3646 child_range children() { 3647 if (InitExprs.empty()) return child_range(); 3648 return child_range(&InitExprs[0], &InitExprs[0] + InitExprs.size()); 3649 } 3650 3651 typedef InitExprsTy::iterator iterator; 3652 typedef InitExprsTy::const_iterator const_iterator; 3653 typedef InitExprsTy::reverse_iterator reverse_iterator; 3654 typedef InitExprsTy::const_reverse_iterator const_reverse_iterator; 3655 3656 iterator begin() { return InitExprs.begin(); } 3657 const_iterator begin() const { return InitExprs.begin(); } 3658 iterator end() { return InitExprs.end(); } 3659 const_iterator end() const { return InitExprs.end(); } 3660 reverse_iterator rbegin() { return InitExprs.rbegin(); } 3661 const_reverse_iterator rbegin() const { return InitExprs.rbegin(); } 3662 reverse_iterator rend() { return InitExprs.rend(); } 3663 const_reverse_iterator rend() const { return InitExprs.rend(); } 3664 3665 friend class ASTStmtReader; 3666 friend class ASTStmtWriter; 3667}; 3668 3669/// @brief Represents a C99 designated initializer expression. 3670/// 3671/// A designated initializer expression (C99 6.7.8) contains one or 3672/// more designators (which can be field designators, array 3673/// designators, or GNU array-range designators) followed by an 3674/// expression that initializes the field or element(s) that the 3675/// designators refer to. For example, given: 3676/// 3677/// @code 3678/// struct point { 3679/// double x; 3680/// double y; 3681/// }; 3682/// struct point ptarray[10] = { [2].y = 1.0, [2].x = 2.0, [0].x = 1.0 }; 3683/// @endcode 3684/// 3685/// The InitListExpr contains three DesignatedInitExprs, the first of 3686/// which covers @c [2].y=1.0. This DesignatedInitExpr will have two 3687/// designators, one array designator for @c [2] followed by one field 3688/// designator for @c .y. The initalization expression will be 1.0. 3689class DesignatedInitExpr : public Expr { 3690public: 3691 /// \brief Forward declaration of the Designator class. 3692 class Designator; 3693 3694private: 3695 /// The location of the '=' or ':' prior to the actual initializer 3696 /// expression. 3697 SourceLocation EqualOrColonLoc; 3698 3699 /// Whether this designated initializer used the GNU deprecated 3700 /// syntax rather than the C99 '=' syntax. 3701 bool GNUSyntax : 1; 3702 3703 /// The number of designators in this initializer expression. 3704 unsigned NumDesignators : 15; 3705 3706 /// The number of subexpressions of this initializer expression, 3707 /// which contains both the initializer and any additional 3708 /// expressions used by array and array-range designators. 3709 unsigned NumSubExprs : 16; 3710 3711 /// \brief The designators in this designated initialization 3712 /// expression. 3713 Designator *Designators; 3714 3715 3716 DesignatedInitExpr(ASTContext &C, QualType Ty, unsigned NumDesignators, 3717 const Designator *Designators, 3718 SourceLocation EqualOrColonLoc, bool GNUSyntax, 3719 Expr **IndexExprs, unsigned NumIndexExprs, 3720 Expr *Init); 3721 3722 explicit DesignatedInitExpr(unsigned NumSubExprs) 3723 : Expr(DesignatedInitExprClass, EmptyShell()), 3724 NumDesignators(0), NumSubExprs(NumSubExprs), Designators(0) { } 3725 3726public: 3727 /// A field designator, e.g., ".x". 3728 struct FieldDesignator { 3729 /// Refers to the field that is being initialized. The low bit 3730 /// of this field determines whether this is actually a pointer 3731 /// to an IdentifierInfo (if 1) or a FieldDecl (if 0). When 3732 /// initially constructed, a field designator will store an 3733 /// IdentifierInfo*. After semantic analysis has resolved that 3734 /// name, the field designator will instead store a FieldDecl*. 3735 uintptr_t NameOrField; 3736 3737 /// The location of the '.' in the designated initializer. 3738 unsigned DotLoc; 3739 3740 /// The location of the field name in the designated initializer. 3741 unsigned FieldLoc; 3742 }; 3743 3744 /// An array or GNU array-range designator, e.g., "[9]" or "[10..15]". 3745 struct ArrayOrRangeDesignator { 3746 /// Location of the first index expression within the designated 3747 /// initializer expression's list of subexpressions. 3748 unsigned Index; 3749 /// The location of the '[' starting the array range designator. 3750 unsigned LBracketLoc; 3751 /// The location of the ellipsis separating the start and end 3752 /// indices. Only valid for GNU array-range designators. 3753 unsigned EllipsisLoc; 3754 /// The location of the ']' terminating the array range designator. 3755 unsigned RBracketLoc; 3756 }; 3757 3758 /// @brief Represents a single C99 designator. 3759 /// 3760 /// @todo This class is infuriatingly similar to clang::Designator, 3761 /// but minor differences (storing indices vs. storing pointers) 3762 /// keep us from reusing it. Try harder, later, to rectify these 3763 /// differences. 3764 class Designator { 3765 /// @brief The kind of designator this describes. 3766 enum { 3767 FieldDesignator, 3768 ArrayDesignator, 3769 ArrayRangeDesignator 3770 } Kind; 3771 3772 union { 3773 /// A field designator, e.g., ".x". 3774 struct FieldDesignator Field; 3775 /// An array or GNU array-range designator, e.g., "[9]" or "[10..15]". 3776 struct ArrayOrRangeDesignator ArrayOrRange; 3777 }; 3778 friend class DesignatedInitExpr; 3779 3780 public: 3781 Designator() {} 3782 3783 /// @brief Initializes a field designator. 3784 Designator(const IdentifierInfo *FieldName, SourceLocation DotLoc, 3785 SourceLocation FieldLoc) 3786 : Kind(FieldDesignator) { 3787 Field.NameOrField = reinterpret_cast<uintptr_t>(FieldName) | 0x01; 3788 Field.DotLoc = DotLoc.getRawEncoding(); 3789 Field.FieldLoc = FieldLoc.getRawEncoding(); 3790 } 3791 3792 /// @brief Initializes an array designator. 3793 Designator(unsigned Index, SourceLocation LBracketLoc, 3794 SourceLocation RBracketLoc) 3795 : Kind(ArrayDesignator) { 3796 ArrayOrRange.Index = Index; 3797 ArrayOrRange.LBracketLoc = LBracketLoc.getRawEncoding(); 3798 ArrayOrRange.EllipsisLoc = SourceLocation().getRawEncoding(); 3799 ArrayOrRange.RBracketLoc = RBracketLoc.getRawEncoding(); 3800 } 3801 3802 /// @brief Initializes a GNU array-range designator. 3803 Designator(unsigned Index, SourceLocation LBracketLoc, 3804 SourceLocation EllipsisLoc, SourceLocation RBracketLoc) 3805 : Kind(ArrayRangeDesignator) { 3806 ArrayOrRange.Index = Index; 3807 ArrayOrRange.LBracketLoc = LBracketLoc.getRawEncoding(); 3808 ArrayOrRange.EllipsisLoc = EllipsisLoc.getRawEncoding(); 3809 ArrayOrRange.RBracketLoc = RBracketLoc.getRawEncoding(); 3810 } 3811 3812 bool isFieldDesignator() const { return Kind == FieldDesignator; } 3813 bool isArrayDesignator() const { return Kind == ArrayDesignator; } 3814 bool isArrayRangeDesignator() const { return Kind == ArrayRangeDesignator; } 3815 3816 IdentifierInfo *getFieldName() const; 3817 3818 FieldDecl *getField() const { 3819 assert(Kind == FieldDesignator && "Only valid on a field designator"); 3820 if (Field.NameOrField & 0x01) 3821 return 0; 3822 else 3823 return reinterpret_cast<FieldDecl *>(Field.NameOrField); 3824 } 3825 3826 void setField(FieldDecl *FD) { 3827 assert(Kind == FieldDesignator && "Only valid on a field designator"); 3828 Field.NameOrField = reinterpret_cast<uintptr_t>(FD); 3829 } 3830 3831 SourceLocation getDotLoc() const { 3832 assert(Kind == FieldDesignator && "Only valid on a field designator"); 3833 return SourceLocation::getFromRawEncoding(Field.DotLoc); 3834 } 3835 3836 SourceLocation getFieldLoc() const { 3837 assert(Kind == FieldDesignator && "Only valid on a field designator"); 3838 return SourceLocation::getFromRawEncoding(Field.FieldLoc); 3839 } 3840 3841 SourceLocation getLBracketLoc() const { 3842 assert((Kind == ArrayDesignator || Kind == ArrayRangeDesignator) && 3843 "Only valid on an array or array-range designator"); 3844 return SourceLocation::getFromRawEncoding(ArrayOrRange.LBracketLoc); 3845 } 3846 3847 SourceLocation getRBracketLoc() const { 3848 assert((Kind == ArrayDesignator || Kind == ArrayRangeDesignator) && 3849 "Only valid on an array or array-range designator"); 3850 return SourceLocation::getFromRawEncoding(ArrayOrRange.RBracketLoc); 3851 } 3852 3853 SourceLocation getEllipsisLoc() const { 3854 assert(Kind == ArrayRangeDesignator && 3855 "Only valid on an array-range designator"); 3856 return SourceLocation::getFromRawEncoding(ArrayOrRange.EllipsisLoc); 3857 } 3858 3859 unsigned getFirstExprIndex() const { 3860 assert((Kind == ArrayDesignator || Kind == ArrayRangeDesignator) && 3861 "Only valid on an array or array-range designator"); 3862 return ArrayOrRange.Index; 3863 } 3864 3865 SourceLocation getStartLocation() const { 3866 if (Kind == FieldDesignator) 3867 return getDotLoc().isInvalid()? getFieldLoc() : getDotLoc(); 3868 else 3869 return getLBracketLoc(); 3870 } 3871 SourceLocation getEndLocation() const { 3872 return Kind == FieldDesignator ? getFieldLoc() : getRBracketLoc(); 3873 } 3874 SourceRange getSourceRange() const LLVM_READONLY { 3875 return SourceRange(getStartLocation(), getEndLocation()); 3876 } 3877 }; 3878 3879 static DesignatedInitExpr *Create(ASTContext &C, Designator *Designators, 3880 unsigned NumDesignators, 3881 Expr **IndexExprs, unsigned NumIndexExprs, 3882 SourceLocation EqualOrColonLoc, 3883 bool GNUSyntax, Expr *Init); 3884 3885 static DesignatedInitExpr *CreateEmpty(ASTContext &C, unsigned NumIndexExprs); 3886 3887 /// @brief Returns the number of designators in this initializer. 3888 unsigned size() const { return NumDesignators; } 3889 3890 // Iterator access to the designators. 3891 typedef Designator *designators_iterator; 3892 designators_iterator designators_begin() { return Designators; } 3893 designators_iterator designators_end() { 3894 return Designators + NumDesignators; 3895 } 3896 3897 typedef const Designator *const_designators_iterator; 3898 const_designators_iterator designators_begin() const { return Designators; } 3899 const_designators_iterator designators_end() const { 3900 return Designators + NumDesignators; 3901 } 3902 3903 typedef std::reverse_iterator<designators_iterator> 3904 reverse_designators_iterator; 3905 reverse_designators_iterator designators_rbegin() { 3906 return reverse_designators_iterator(designators_end()); 3907 } 3908 reverse_designators_iterator designators_rend() { 3909 return reverse_designators_iterator(designators_begin()); 3910 } 3911 3912 typedef std::reverse_iterator<const_designators_iterator> 3913 const_reverse_designators_iterator; 3914 const_reverse_designators_iterator designators_rbegin() const { 3915 return const_reverse_designators_iterator(designators_end()); 3916 } 3917 const_reverse_designators_iterator designators_rend() const { 3918 return const_reverse_designators_iterator(designators_begin()); 3919 } 3920 3921 Designator *getDesignator(unsigned Idx) { return &designators_begin()[Idx]; } 3922 3923 void setDesignators(ASTContext &C, const Designator *Desigs, 3924 unsigned NumDesigs); 3925 3926 Expr *getArrayIndex(const Designator& D); 3927 Expr *getArrayRangeStart(const Designator& D); 3928 Expr *getArrayRangeEnd(const Designator& D); 3929 3930 /// @brief Retrieve the location of the '=' that precedes the 3931 /// initializer value itself, if present. 3932 SourceLocation getEqualOrColonLoc() const { return EqualOrColonLoc; } 3933 void setEqualOrColonLoc(SourceLocation L) { EqualOrColonLoc = L; } 3934 3935 /// @brief Determines whether this designated initializer used the 3936 /// deprecated GNU syntax for designated initializers. 3937 bool usesGNUSyntax() const { return GNUSyntax; } 3938 void setGNUSyntax(bool GNU) { GNUSyntax = GNU; } 3939 3940 /// @brief Retrieve the initializer value. 3941 Expr *getInit() const { 3942 return cast<Expr>(*const_cast<DesignatedInitExpr*>(this)->child_begin()); 3943 } 3944 3945 void setInit(Expr *init) { 3946 *child_begin() = init; 3947 } 3948 3949 /// \brief Retrieve the total number of subexpressions in this 3950 /// designated initializer expression, including the actual 3951 /// initialized value and any expressions that occur within array 3952 /// and array-range designators. 3953 unsigned getNumSubExprs() const { return NumSubExprs; } 3954 3955 Expr *getSubExpr(unsigned Idx) { 3956 assert(Idx < NumSubExprs && "Subscript out of range"); 3957 char* Ptr = static_cast<char*>(static_cast<void *>(this)); 3958 Ptr += sizeof(DesignatedInitExpr); 3959 return reinterpret_cast<Expr**>(reinterpret_cast<void**>(Ptr))[Idx]; 3960 } 3961 3962 void setSubExpr(unsigned Idx, Expr *E) { 3963 assert(Idx < NumSubExprs && "Subscript out of range"); 3964 char* Ptr = static_cast<char*>(static_cast<void *>(this)); 3965 Ptr += sizeof(DesignatedInitExpr); 3966 reinterpret_cast<Expr**>(reinterpret_cast<void**>(Ptr))[Idx] = E; 3967 } 3968 3969 /// \brief Replaces the designator at index @p Idx with the series 3970 /// of designators in [First, Last). 3971 void ExpandDesignator(ASTContext &C, unsigned Idx, const Designator *First, 3972 const Designator *Last); 3973 3974 SourceRange getDesignatorsSourceRange() const; 3975 3976 SourceRange getSourceRange() const LLVM_READONLY; 3977 3978 static bool classof(const Stmt *T) { 3979 return T->getStmtClass() == DesignatedInitExprClass; 3980 } 3981 static bool classof(const DesignatedInitExpr *) { return true; } 3982 3983 // Iterators 3984 child_range children() { 3985 Stmt **begin = reinterpret_cast<Stmt**>(this + 1); 3986 return child_range(begin, begin + NumSubExprs); 3987 } 3988}; 3989 3990/// \brief Represents an implicitly-generated value initialization of 3991/// an object of a given type. 3992/// 3993/// Implicit value initializations occur within semantic initializer 3994/// list expressions (InitListExpr) as placeholders for subobject 3995/// initializations not explicitly specified by the user. 3996/// 3997/// \see InitListExpr 3998class ImplicitValueInitExpr : public Expr { 3999public: 4000 explicit ImplicitValueInitExpr(QualType ty) 4001 : Expr(ImplicitValueInitExprClass, ty, VK_RValue, OK_Ordinary, 4002 false, false, ty->isInstantiationDependentType(), false) { } 4003 4004 /// \brief Construct an empty implicit value initialization. 4005 explicit ImplicitValueInitExpr(EmptyShell Empty) 4006 : Expr(ImplicitValueInitExprClass, Empty) { } 4007 4008 static bool classof(const Stmt *T) { 4009 return T->getStmtClass() == ImplicitValueInitExprClass; 4010 } 4011 static bool classof(const ImplicitValueInitExpr *) { return true; } 4012 4013 SourceRange getSourceRange() const LLVM_READONLY { 4014 return SourceRange(); 4015 } 4016 4017 // Iterators 4018 child_range children() { return child_range(); } 4019}; 4020 4021 4022class ParenListExpr : public Expr { 4023 Stmt **Exprs; 4024 unsigned NumExprs; 4025 SourceLocation LParenLoc, RParenLoc; 4026 4027public: 4028 ParenListExpr(ASTContext& C, SourceLocation lparenloc, Expr **exprs, 4029 unsigned numexprs, SourceLocation rparenloc); 4030 4031 /// \brief Build an empty paren list. 4032 explicit ParenListExpr(EmptyShell Empty) : Expr(ParenListExprClass, Empty) { } 4033 4034 unsigned getNumExprs() const { return NumExprs; } 4035 4036 const Expr* getExpr(unsigned Init) const { 4037 assert(Init < getNumExprs() && "Initializer access out of range!"); 4038 return cast_or_null<Expr>(Exprs[Init]); 4039 } 4040 4041 Expr* getExpr(unsigned Init) { 4042 assert(Init < getNumExprs() && "Initializer access out of range!"); 4043 return cast_or_null<Expr>(Exprs[Init]); 4044 } 4045 4046 Expr **getExprs() { return reinterpret_cast<Expr **>(Exprs); } 4047 4048 SourceLocation getLParenLoc() const { return LParenLoc; } 4049 SourceLocation getRParenLoc() const { return RParenLoc; } 4050 4051 SourceRange getSourceRange() const LLVM_READONLY { 4052 return SourceRange(LParenLoc, RParenLoc); 4053 } 4054 static bool classof(const Stmt *T) { 4055 return T->getStmtClass() == ParenListExprClass; 4056 } 4057 static bool classof(const ParenListExpr *) { return true; } 4058 4059 // Iterators 4060 child_range children() { 4061 return child_range(&Exprs[0], &Exprs[0]+NumExprs); 4062 } 4063 4064 friend class ASTStmtReader; 4065 friend class ASTStmtWriter; 4066}; 4067 4068 4069/// \brief Represents a C11 generic selection. 4070/// 4071/// A generic selection (C11 6.5.1.1) contains an unevaluated controlling 4072/// expression, followed by one or more generic associations. Each generic 4073/// association specifies a type name and an expression, or "default" and an 4074/// expression (in which case it is known as a default generic association). 4075/// The type and value of the generic selection are identical to those of its 4076/// result expression, which is defined as the expression in the generic 4077/// association with a type name that is compatible with the type of the 4078/// controlling expression, or the expression in the default generic association 4079/// if no types are compatible. For example: 4080/// 4081/// @code 4082/// _Generic(X, double: 1, float: 2, default: 3) 4083/// @endcode 4084/// 4085/// The above expression evaluates to 1 if 1.0 is substituted for X, 2 if 1.0f 4086/// or 3 if "hello". 4087/// 4088/// As an extension, generic selections are allowed in C++, where the following 4089/// additional semantics apply: 4090/// 4091/// Any generic selection whose controlling expression is type-dependent or 4092/// which names a dependent type in its association list is result-dependent, 4093/// which means that the choice of result expression is dependent. 4094/// Result-dependent generic associations are both type- and value-dependent. 4095class GenericSelectionExpr : public Expr { 4096 enum { CONTROLLING, END_EXPR }; 4097 TypeSourceInfo **AssocTypes; 4098 Stmt **SubExprs; 4099 unsigned NumAssocs, ResultIndex; 4100 SourceLocation GenericLoc, DefaultLoc, RParenLoc; 4101 4102public: 4103 GenericSelectionExpr(ASTContext &Context, 4104 SourceLocation GenericLoc, Expr *ControllingExpr, 4105 TypeSourceInfo **AssocTypes, Expr **AssocExprs, 4106 unsigned NumAssocs, SourceLocation DefaultLoc, 4107 SourceLocation RParenLoc, 4108 bool ContainsUnexpandedParameterPack, 4109 unsigned ResultIndex); 4110 4111 /// This constructor is used in the result-dependent case. 4112 GenericSelectionExpr(ASTContext &Context, 4113 SourceLocation GenericLoc, Expr *ControllingExpr, 4114 TypeSourceInfo **AssocTypes, Expr **AssocExprs, 4115 unsigned NumAssocs, SourceLocation DefaultLoc, 4116 SourceLocation RParenLoc, 4117 bool ContainsUnexpandedParameterPack); 4118 4119 explicit GenericSelectionExpr(EmptyShell Empty) 4120 : Expr(GenericSelectionExprClass, Empty) { } 4121 4122 unsigned getNumAssocs() const { return NumAssocs; } 4123 4124 SourceLocation getGenericLoc() const { return GenericLoc; } 4125 SourceLocation getDefaultLoc() const { return DefaultLoc; } 4126 SourceLocation getRParenLoc() const { return RParenLoc; } 4127 4128 const Expr *getAssocExpr(unsigned i) const { 4129 return cast<Expr>(SubExprs[END_EXPR+i]); 4130 } 4131 Expr *getAssocExpr(unsigned i) { return cast<Expr>(SubExprs[END_EXPR+i]); } 4132 4133 const TypeSourceInfo *getAssocTypeSourceInfo(unsigned i) const { 4134 return AssocTypes[i]; 4135 } 4136 TypeSourceInfo *getAssocTypeSourceInfo(unsigned i) { return AssocTypes[i]; } 4137 4138 QualType getAssocType(unsigned i) const { 4139 if (const TypeSourceInfo *TS = getAssocTypeSourceInfo(i)) 4140 return TS->getType(); 4141 else 4142 return QualType(); 4143 } 4144 4145 const Expr *getControllingExpr() const { 4146 return cast<Expr>(SubExprs[CONTROLLING]); 4147 } 4148 Expr *getControllingExpr() { return cast<Expr>(SubExprs[CONTROLLING]); } 4149 4150 /// Whether this generic selection is result-dependent. 4151 bool isResultDependent() const { return ResultIndex == -1U; } 4152 4153 /// The zero-based index of the result expression's generic association in 4154 /// the generic selection's association list. Defined only if the 4155 /// generic selection is not result-dependent. 4156 unsigned getResultIndex() const { 4157 assert(!isResultDependent() && "Generic selection is result-dependent"); 4158 return ResultIndex; 4159 } 4160 4161 /// The generic selection's result expression. Defined only if the 4162 /// generic selection is not result-dependent. 4163 const Expr *getResultExpr() const { return getAssocExpr(getResultIndex()); } 4164 Expr *getResultExpr() { return getAssocExpr(getResultIndex()); } 4165 4166 SourceRange getSourceRange() const LLVM_READONLY { 4167 return SourceRange(GenericLoc, RParenLoc); 4168 } 4169 static bool classof(const Stmt *T) { 4170 return T->getStmtClass() == GenericSelectionExprClass; 4171 } 4172 static bool classof(const GenericSelectionExpr *) { return true; } 4173 4174 child_range children() { 4175 return child_range(SubExprs, SubExprs+END_EXPR+NumAssocs); 4176 } 4177 4178 friend class ASTStmtReader; 4179}; 4180 4181//===----------------------------------------------------------------------===// 4182// Clang Extensions 4183//===----------------------------------------------------------------------===// 4184 4185 4186/// ExtVectorElementExpr - This represents access to specific elements of a 4187/// vector, and may occur on the left hand side or right hand side. For example 4188/// the following is legal: "V.xy = V.zw" if V is a 4 element extended vector. 4189/// 4190/// Note that the base may have either vector or pointer to vector type, just 4191/// like a struct field reference. 4192/// 4193class ExtVectorElementExpr : public Expr { 4194 Stmt *Base; 4195 IdentifierInfo *Accessor; 4196 SourceLocation AccessorLoc; 4197public: 4198 ExtVectorElementExpr(QualType ty, ExprValueKind VK, Expr *base, 4199 IdentifierInfo &accessor, SourceLocation loc) 4200 : Expr(ExtVectorElementExprClass, ty, VK, 4201 (VK == VK_RValue ? OK_Ordinary : OK_VectorComponent), 4202 base->isTypeDependent(), base->isValueDependent(), 4203 base->isInstantiationDependent(), 4204 base->containsUnexpandedParameterPack()), 4205 Base(base), Accessor(&accessor), AccessorLoc(loc) {} 4206 4207 /// \brief Build an empty vector element expression. 4208 explicit ExtVectorElementExpr(EmptyShell Empty) 4209 : Expr(ExtVectorElementExprClass, Empty) { } 4210 4211 const Expr *getBase() const { return cast<Expr>(Base); } 4212 Expr *getBase() { return cast<Expr>(Base); } 4213 void setBase(Expr *E) { Base = E; } 4214 4215 IdentifierInfo &getAccessor() const { return *Accessor; } 4216 void setAccessor(IdentifierInfo *II) { Accessor = II; } 4217 4218 SourceLocation getAccessorLoc() const { return AccessorLoc; } 4219 void setAccessorLoc(SourceLocation L) { AccessorLoc = L; } 4220 4221 /// getNumElements - Get the number of components being selected. 4222 unsigned getNumElements() const; 4223 4224 /// containsDuplicateElements - Return true if any element access is 4225 /// repeated. 4226 bool containsDuplicateElements() const; 4227 4228 /// getEncodedElementAccess - Encode the elements accessed into an llvm 4229 /// aggregate Constant of ConstantInt(s). 4230 void getEncodedElementAccess(SmallVectorImpl<unsigned> &Elts) const; 4231 4232 SourceRange getSourceRange() const LLVM_READONLY { 4233 return SourceRange(getBase()->getLocStart(), AccessorLoc); 4234 } 4235 4236 /// isArrow - Return true if the base expression is a pointer to vector, 4237 /// return false if the base expression is a vector. 4238 bool isArrow() const; 4239 4240 static bool classof(const Stmt *T) { 4241 return T->getStmtClass() == ExtVectorElementExprClass; 4242 } 4243 static bool classof(const ExtVectorElementExpr *) { return true; } 4244 4245 // Iterators 4246 child_range children() { return child_range(&Base, &Base+1); } 4247}; 4248 4249 4250/// BlockExpr - Adaptor class for mixing a BlockDecl with expressions. 4251/// ^{ statement-body } or ^(int arg1, float arg2){ statement-body } 4252class BlockExpr : public Expr { 4253protected: 4254 BlockDecl *TheBlock; 4255public: 4256 BlockExpr(BlockDecl *BD, QualType ty) 4257 : Expr(BlockExprClass, ty, VK_RValue, OK_Ordinary, 4258 ty->isDependentType(), ty->isDependentType(), 4259 ty->isInstantiationDependentType() || BD->isDependentContext(), 4260 false), 4261 TheBlock(BD) {} 4262 4263 /// \brief Build an empty block expression. 4264 explicit BlockExpr(EmptyShell Empty) : Expr(BlockExprClass, Empty) { } 4265 4266 const BlockDecl *getBlockDecl() const { return TheBlock; } 4267 BlockDecl *getBlockDecl() { return TheBlock; } 4268 void setBlockDecl(BlockDecl *BD) { TheBlock = BD; } 4269 4270 // Convenience functions for probing the underlying BlockDecl. 4271 SourceLocation getCaretLocation() const; 4272 const Stmt *getBody() const; 4273 Stmt *getBody(); 4274 4275 SourceRange getSourceRange() const LLVM_READONLY { 4276 return SourceRange(getCaretLocation(), getBody()->getLocEnd()); 4277 } 4278 4279 /// getFunctionType - Return the underlying function type for this block. 4280 const FunctionProtoType *getFunctionType() const; 4281 4282 static bool classof(const Stmt *T) { 4283 return T->getStmtClass() == BlockExprClass; 4284 } 4285 static bool classof(const BlockExpr *) { return true; } 4286 4287 // Iterators 4288 child_range children() { return child_range(); } 4289}; 4290 4291/// AsTypeExpr - Clang builtin function __builtin_astype [OpenCL 6.2.4.2] 4292/// This AST node provides support for reinterpreting a type to another 4293/// type of the same size. 4294class AsTypeExpr : public Expr { // Should this be an ExplicitCastExpr? 4295private: 4296 Stmt *SrcExpr; 4297 SourceLocation BuiltinLoc, RParenLoc; 4298 4299 friend class ASTReader; 4300 friend class ASTStmtReader; 4301 explicit AsTypeExpr(EmptyShell Empty) : Expr(AsTypeExprClass, Empty) {} 4302 4303public: 4304 AsTypeExpr(Expr* SrcExpr, QualType DstType, 4305 ExprValueKind VK, ExprObjectKind OK, 4306 SourceLocation BuiltinLoc, SourceLocation RParenLoc) 4307 : Expr(AsTypeExprClass, DstType, VK, OK, 4308 DstType->isDependentType(), 4309 DstType->isDependentType() || SrcExpr->isValueDependent(), 4310 (DstType->isInstantiationDependentType() || 4311 SrcExpr->isInstantiationDependent()), 4312 (DstType->containsUnexpandedParameterPack() || 4313 SrcExpr->containsUnexpandedParameterPack())), 4314 SrcExpr(SrcExpr), BuiltinLoc(BuiltinLoc), RParenLoc(RParenLoc) {} 4315 4316 /// getSrcExpr - Return the Expr to be converted. 4317 Expr *getSrcExpr() const { return cast<Expr>(SrcExpr); } 4318 4319 /// getBuiltinLoc - Return the location of the __builtin_astype token. 4320 SourceLocation getBuiltinLoc() const { return BuiltinLoc; } 4321 4322 /// getRParenLoc - Return the location of final right parenthesis. 4323 SourceLocation getRParenLoc() const { return RParenLoc; } 4324 4325 SourceRange getSourceRange() const LLVM_READONLY { 4326 return SourceRange(BuiltinLoc, RParenLoc); 4327 } 4328 4329 static bool classof(const Stmt *T) { 4330 return T->getStmtClass() == AsTypeExprClass; 4331 } 4332 static bool classof(const AsTypeExpr *) { return true; } 4333 4334 // Iterators 4335 child_range children() { return child_range(&SrcExpr, &SrcExpr+1); } 4336}; 4337 4338/// PseudoObjectExpr - An expression which accesses a pseudo-object 4339/// l-value. A pseudo-object is an abstract object, accesses to which 4340/// are translated to calls. The pseudo-object expression has a 4341/// syntactic form, which shows how the expression was actually 4342/// written in the source code, and a semantic form, which is a series 4343/// of expressions to be executed in order which detail how the 4344/// operation is actually evaluated. Optionally, one of the semantic 4345/// forms may also provide a result value for the expression. 4346/// 4347/// If any of the semantic-form expressions is an OpaqueValueExpr, 4348/// that OVE is required to have a source expression, and it is bound 4349/// to the result of that source expression. Such OVEs may appear 4350/// only in subsequent semantic-form expressions and as 4351/// sub-expressions of the syntactic form. 4352/// 4353/// PseudoObjectExpr should be used only when an operation can be 4354/// usefully described in terms of fairly simple rewrite rules on 4355/// objects and functions that are meant to be used by end-developers. 4356/// For example, under the Itanium ABI, dynamic casts are implemented 4357/// as a call to a runtime function called __dynamic_cast; using this 4358/// class to describe that would be inappropriate because that call is 4359/// not really part of the user-visible semantics, and instead the 4360/// cast is properly reflected in the AST and IR-generation has been 4361/// taught to generate the call as necessary. In contrast, an 4362/// Objective-C property access is semantically defined to be 4363/// equivalent to a particular message send, and this is very much 4364/// part of the user model. The name of this class encourages this 4365/// modelling design. 4366class PseudoObjectExpr : public Expr { 4367 // PseudoObjectExprBits.NumSubExprs - The number of sub-expressions. 4368 // Always at least two, because the first sub-expression is the 4369 // syntactic form. 4370 4371 // PseudoObjectExprBits.ResultIndex - The index of the 4372 // sub-expression holding the result. 0 means the result is void, 4373 // which is unambiguous because it's the index of the syntactic 4374 // form. Note that this is therefore 1 higher than the value passed 4375 // in to Create, which is an index within the semantic forms. 4376 // Note also that ASTStmtWriter assumes this encoding. 4377 4378 Expr **getSubExprsBuffer() { return reinterpret_cast<Expr**>(this + 1); } 4379 const Expr * const *getSubExprsBuffer() const { 4380 return reinterpret_cast<const Expr * const *>(this + 1); 4381 } 4382 4383 friend class ASTStmtReader; 4384 4385 PseudoObjectExpr(QualType type, ExprValueKind VK, 4386 Expr *syntactic, ArrayRef<Expr*> semantic, 4387 unsigned resultIndex); 4388 4389 PseudoObjectExpr(EmptyShell shell, unsigned numSemanticExprs); 4390 4391 unsigned getNumSubExprs() const { 4392 return PseudoObjectExprBits.NumSubExprs; 4393 } 4394 4395public: 4396 /// NoResult - A value for the result index indicating that there is 4397 /// no semantic result. 4398 enum { NoResult = ~0U }; 4399 4400 static PseudoObjectExpr *Create(ASTContext &Context, Expr *syntactic, 4401 ArrayRef<Expr*> semantic, 4402 unsigned resultIndex); 4403 4404 static PseudoObjectExpr *Create(ASTContext &Context, EmptyShell shell, 4405 unsigned numSemanticExprs); 4406 4407 /// Return the syntactic form of this expression, i.e. the 4408 /// expression it actually looks like. Likely to be expressed in 4409 /// terms of OpaqueValueExprs bound in the semantic form. 4410 Expr *getSyntacticForm() { return getSubExprsBuffer()[0]; } 4411 const Expr *getSyntacticForm() const { return getSubExprsBuffer()[0]; } 4412 4413 /// Return the index of the result-bearing expression into the semantics 4414 /// expressions, or PseudoObjectExpr::NoResult if there is none. 4415 unsigned getResultExprIndex() const { 4416 if (PseudoObjectExprBits.ResultIndex == 0) return NoResult; 4417 return PseudoObjectExprBits.ResultIndex - 1; 4418 } 4419 4420 /// Return the result-bearing expression, or null if there is none. 4421 Expr *getResultExpr() { 4422 if (PseudoObjectExprBits.ResultIndex == 0) 4423 return 0; 4424 return getSubExprsBuffer()[PseudoObjectExprBits.ResultIndex]; 4425 } 4426 const Expr *getResultExpr() const { 4427 return const_cast<PseudoObjectExpr*>(this)->getResultExpr(); 4428 } 4429 4430 unsigned getNumSemanticExprs() const { return getNumSubExprs() - 1; } 4431 4432 typedef Expr * const *semantics_iterator; 4433 typedef const Expr * const *const_semantics_iterator; 4434 semantics_iterator semantics_begin() { 4435 return getSubExprsBuffer() + 1; 4436 } 4437 const_semantics_iterator semantics_begin() const { 4438 return getSubExprsBuffer() + 1; 4439 } 4440 semantics_iterator semantics_end() { 4441 return getSubExprsBuffer() + getNumSubExprs(); 4442 } 4443 const_semantics_iterator semantics_end() const { 4444 return getSubExprsBuffer() + getNumSubExprs(); 4445 } 4446 Expr *getSemanticExpr(unsigned index) { 4447 assert(index + 1 < getNumSubExprs()); 4448 return getSubExprsBuffer()[index + 1]; 4449 } 4450 const Expr *getSemanticExpr(unsigned index) const { 4451 return const_cast<PseudoObjectExpr*>(this)->getSemanticExpr(index); 4452 } 4453 4454 SourceLocation getExprLoc() const LLVM_READONLY { 4455 return getSyntacticForm()->getExprLoc(); 4456 } 4457 SourceRange getSourceRange() const LLVM_READONLY { 4458 return getSyntacticForm()->getSourceRange(); 4459 } 4460 4461 child_range children() { 4462 Stmt **cs = reinterpret_cast<Stmt**>(getSubExprsBuffer()); 4463 return child_range(cs, cs + getNumSubExprs()); 4464 } 4465 4466 static bool classof(const Stmt *T) { 4467 return T->getStmtClass() == PseudoObjectExprClass; 4468 } 4469 static bool classof(const PseudoObjectExpr *) { return true; } 4470}; 4471 4472/// AtomicExpr - Variadic atomic builtins: __atomic_exchange, __atomic_fetch_*, 4473/// __atomic_load, __atomic_store, and __atomic_compare_exchange_*, for the 4474/// similarly-named C++11 instructions, and __c11 variants for <stdatomic.h>. 4475/// All of these instructions take one primary pointer and at least one memory 4476/// order. 4477class AtomicExpr : public Expr { 4478public: 4479 enum AtomicOp { 4480#define BUILTIN(ID, TYPE, ATTRS) 4481#define ATOMIC_BUILTIN(ID, TYPE, ATTRS) AO ## ID, 4482#include "clang/Basic/Builtins.def" 4483 // Avoid trailing comma 4484 BI_First = 0 4485 }; 4486 4487private: 4488 enum { PTR, ORDER, VAL1, ORDER_FAIL, VAL2, WEAK, END_EXPR }; 4489 Stmt* SubExprs[END_EXPR]; 4490 unsigned NumSubExprs; 4491 SourceLocation BuiltinLoc, RParenLoc; 4492 AtomicOp Op; 4493 4494 friend class ASTStmtReader; 4495 4496public: 4497 AtomicExpr(SourceLocation BLoc, Expr **args, unsigned nexpr, QualType t, 4498 AtomicOp op, SourceLocation RP); 4499 4500 /// \brief Determine the number of arguments the specified atomic builtin 4501 /// should have. 4502 static unsigned getNumSubExprs(AtomicOp Op); 4503 4504 /// \brief Build an empty AtomicExpr. 4505 explicit AtomicExpr(EmptyShell Empty) : Expr(AtomicExprClass, Empty) { } 4506 4507 Expr *getPtr() const { 4508 return cast<Expr>(SubExprs[PTR]); 4509 } 4510 Expr *getOrder() const { 4511 return cast<Expr>(SubExprs[ORDER]); 4512 } 4513 Expr *getVal1() const { 4514 if (Op == AO__c11_atomic_init) 4515 return cast<Expr>(SubExprs[ORDER]); 4516 assert(NumSubExprs > VAL1); 4517 return cast<Expr>(SubExprs[VAL1]); 4518 } 4519 Expr *getOrderFail() const { 4520 assert(NumSubExprs > ORDER_FAIL); 4521 return cast<Expr>(SubExprs[ORDER_FAIL]); 4522 } 4523 Expr *getVal2() const { 4524 if (Op == AO__atomic_exchange) 4525 return cast<Expr>(SubExprs[ORDER_FAIL]); 4526 assert(NumSubExprs > VAL2); 4527 return cast<Expr>(SubExprs[VAL2]); 4528 } 4529 Expr *getWeak() const { 4530 assert(NumSubExprs > WEAK); 4531 return cast<Expr>(SubExprs[WEAK]); 4532 } 4533 4534 AtomicOp getOp() const { return Op; } 4535 unsigned getNumSubExprs() { return NumSubExprs; } 4536 4537 Expr **getSubExprs() { return reinterpret_cast<Expr **>(SubExprs); } 4538 4539 bool isVolatile() const { 4540 return getPtr()->getType()->getPointeeType().isVolatileQualified(); 4541 } 4542 4543 bool isCmpXChg() const { 4544 return getOp() == AO__c11_atomic_compare_exchange_strong || 4545 getOp() == AO__c11_atomic_compare_exchange_weak || 4546 getOp() == AO__atomic_compare_exchange || 4547 getOp() == AO__atomic_compare_exchange_n; 4548 } 4549 4550 SourceLocation getBuiltinLoc() const { return BuiltinLoc; } 4551 SourceLocation getRParenLoc() const { return RParenLoc; } 4552 4553 SourceRange getSourceRange() const LLVM_READONLY { 4554 return SourceRange(BuiltinLoc, RParenLoc); 4555 } 4556 static bool classof(const Stmt *T) { 4557 return T->getStmtClass() == AtomicExprClass; 4558 } 4559 static bool classof(const AtomicExpr *) { return true; } 4560 4561 // Iterators 4562 child_range children() { 4563 return child_range(SubExprs, SubExprs+NumSubExprs); 4564 } 4565}; 4566} // end namespace clang 4567 4568#endif 4569