ExprCXX.h revision 7cb6bd70f9436f630a508ba017414ca2466eeb35
1//===--- ExprCXX.h - Classes for representing expressions -------*- C++ -*-===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is distributed under the University of Illinois Open Source 6// License. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9// 10// This file defines the Expr interface and subclasses for C++ expressions. 11// 12//===----------------------------------------------------------------------===// 13 14#ifndef LLVM_CLANG_AST_EXPRCXX_H 15#define LLVM_CLANG_AST_EXPRCXX_H 16 17#include "clang/Basic/TypeTraits.h" 18#include "clang/AST/Expr.h" 19#include "clang/AST/UnresolvedSet.h" 20#include "clang/AST/TemplateBase.h" 21 22namespace clang { 23 24 class CXXConstructorDecl; 25 class CXXDestructorDecl; 26 class CXXMethodDecl; 27 class CXXTemporary; 28 class TemplateArgumentListInfo; 29 30//===--------------------------------------------------------------------===// 31// C++ Expressions. 32//===--------------------------------------------------------------------===// 33 34/// \brief A call to an overloaded operator written using operator 35/// syntax. 36/// 37/// Represents a call to an overloaded operator written using operator 38/// syntax, e.g., "x + y" or "*p". While semantically equivalent to a 39/// normal call, this AST node provides better information about the 40/// syntactic representation of the call. 41/// 42/// In a C++ template, this expression node kind will be used whenever 43/// any of the arguments are type-dependent. In this case, the 44/// function itself will be a (possibly empty) set of functions and 45/// function templates that were found by name lookup at template 46/// definition time. 47class CXXOperatorCallExpr : public CallExpr { 48 /// \brief The overloaded operator. 49 OverloadedOperatorKind Operator; 50 51public: 52 CXXOperatorCallExpr(ASTContext& C, OverloadedOperatorKind Op, Expr *fn, 53 Expr **args, unsigned numargs, QualType t, 54 SourceLocation operatorloc) 55 : CallExpr(C, CXXOperatorCallExprClass, fn, args, numargs, t, operatorloc), 56 Operator(Op) {} 57 explicit CXXOperatorCallExpr(ASTContext& C, EmptyShell Empty) : 58 CallExpr(C, CXXOperatorCallExprClass, Empty) { } 59 60 61 /// getOperator - Returns the kind of overloaded operator that this 62 /// expression refers to. 63 OverloadedOperatorKind getOperator() const { return Operator; } 64 void setOperator(OverloadedOperatorKind Kind) { Operator = Kind; } 65 66 /// getOperatorLoc - Returns the location of the operator symbol in 67 /// the expression. When @c getOperator()==OO_Call, this is the 68 /// location of the right parentheses; when @c 69 /// getOperator()==OO_Subscript, this is the location of the right 70 /// bracket. 71 SourceLocation getOperatorLoc() const { return getRParenLoc(); } 72 73 virtual SourceRange getSourceRange() const; 74 75 static bool classof(const Stmt *T) { 76 return T->getStmtClass() == CXXOperatorCallExprClass; 77 } 78 static bool classof(const CXXOperatorCallExpr *) { return true; } 79}; 80 81/// CXXMemberCallExpr - Represents a call to a member function that 82/// may be written either with member call syntax (e.g., "obj.func()" 83/// or "objptr->func()") or with normal function-call syntax 84/// ("func()") within a member function that ends up calling a member 85/// function. The callee in either case is a MemberExpr that contains 86/// both the object argument and the member function, while the 87/// arguments are the arguments within the parentheses (not including 88/// the object argument). 89class CXXMemberCallExpr : public CallExpr { 90public: 91 CXXMemberCallExpr(ASTContext &C, Expr *fn, Expr **args, unsigned numargs, 92 QualType t, SourceLocation rparenloc) 93 : CallExpr(C, CXXMemberCallExprClass, fn, args, numargs, t, rparenloc) {} 94 95 CXXMemberCallExpr(ASTContext &C, EmptyShell Empty) 96 : CallExpr(C, CXXMemberCallExprClass, Empty) { } 97 98 /// getImplicitObjectArgument - Retrieves the implicit object 99 /// argument for the member call. For example, in "x.f(5)", this 100 /// operation would return "x". 101 Expr *getImplicitObjectArgument(); 102 103 virtual SourceRange getSourceRange() const; 104 105 static bool classof(const Stmt *T) { 106 return T->getStmtClass() == CXXMemberCallExprClass; 107 } 108 static bool classof(const CXXMemberCallExpr *) { return true; } 109}; 110 111/// CXXNamedCastExpr - Abstract class common to all of the C++ "named" 112/// casts, @c static_cast, @c dynamic_cast, @c reinterpret_cast, or @c 113/// const_cast. 114/// 115/// This abstract class is inherited by all of the classes 116/// representing "named" casts, e.g., CXXStaticCastExpr, 117/// CXXDynamicCastExpr, CXXReinterpretCastExpr, and CXXConstCastExpr. 118class CXXNamedCastExpr : public ExplicitCastExpr { 119private: 120 SourceLocation Loc; // the location of the casting op 121 122protected: 123 CXXNamedCastExpr(StmtClass SC, QualType ty, CastKind kind, Expr *op, 124 CXXBaseSpecifierArray BasePath, TypeSourceInfo *writtenTy, 125 SourceLocation l) 126 : ExplicitCastExpr(SC, ty, kind, op, BasePath, writtenTy), Loc(l) {} 127 128 explicit CXXNamedCastExpr(StmtClass SC, EmptyShell Shell) 129 : ExplicitCastExpr(SC, Shell) { } 130 131public: 132 const char *getCastName() const; 133 134 /// \brief Retrieve the location of the cast operator keyword, e.g., 135 /// "static_cast". 136 SourceLocation getOperatorLoc() const { return Loc; } 137 void setOperatorLoc(SourceLocation L) { Loc = L; } 138 139 virtual SourceRange getSourceRange() const { 140 return SourceRange(Loc, getSubExpr()->getSourceRange().getEnd()); 141 } 142 static bool classof(const Stmt *T) { 143 switch (T->getStmtClass()) { 144 case CXXStaticCastExprClass: 145 case CXXDynamicCastExprClass: 146 case CXXReinterpretCastExprClass: 147 case CXXConstCastExprClass: 148 return true; 149 default: 150 return false; 151 } 152 } 153 static bool classof(const CXXNamedCastExpr *) { return true; } 154}; 155 156/// CXXStaticCastExpr - A C++ @c static_cast expression (C++ [expr.static.cast]). 157/// 158/// This expression node represents a C++ static cast, e.g., 159/// @c static_cast<int>(1.0). 160class CXXStaticCastExpr : public CXXNamedCastExpr { 161public: 162 CXXStaticCastExpr(QualType ty, CastKind kind, Expr *op, 163 CXXBaseSpecifierArray BasePath, TypeSourceInfo *writtenTy, 164 SourceLocation l) 165 : CXXNamedCastExpr(CXXStaticCastExprClass, ty, kind, op, BasePath, writtenTy, l) {} 166 167 explicit CXXStaticCastExpr(EmptyShell Empty) 168 : CXXNamedCastExpr(CXXStaticCastExprClass, Empty) { } 169 170 static bool classof(const Stmt *T) { 171 return T->getStmtClass() == CXXStaticCastExprClass; 172 } 173 static bool classof(const CXXStaticCastExpr *) { return true; } 174}; 175 176/// CXXDynamicCastExpr - A C++ @c dynamic_cast expression 177/// (C++ [expr.dynamic.cast]), which may perform a run-time check to 178/// determine how to perform the type cast. 179/// 180/// This expression node represents a dynamic cast, e.g., 181/// @c dynamic_cast<Derived*>(BasePtr). 182class CXXDynamicCastExpr : public CXXNamedCastExpr { 183public: 184 CXXDynamicCastExpr(QualType ty, CastKind kind, Expr *op, 185 CXXBaseSpecifierArray BasePath, TypeSourceInfo *writtenTy, 186 SourceLocation l) 187 : CXXNamedCastExpr(CXXDynamicCastExprClass, ty, kind, op, BasePath, 188 writtenTy, l) {} 189 190 explicit CXXDynamicCastExpr(EmptyShell Empty) 191 : CXXNamedCastExpr(CXXDynamicCastExprClass, Empty) { } 192 193 static bool classof(const Stmt *T) { 194 return T->getStmtClass() == CXXDynamicCastExprClass; 195 } 196 static bool classof(const CXXDynamicCastExpr *) { return true; } 197}; 198 199/// CXXReinterpretCastExpr - A C++ @c reinterpret_cast expression (C++ 200/// [expr.reinterpret.cast]), which provides a differently-typed view 201/// of a value but performs no actual work at run time. 202/// 203/// This expression node represents a reinterpret cast, e.g., 204/// @c reinterpret_cast<int>(VoidPtr). 205class CXXReinterpretCastExpr : public CXXNamedCastExpr { 206public: 207 CXXReinterpretCastExpr(QualType ty, CastKind kind, Expr *op, 208 CXXBaseSpecifierArray BasePath, 209 TypeSourceInfo *writtenTy, SourceLocation l) 210 : CXXNamedCastExpr(CXXReinterpretCastExprClass, ty, kind, op, BasePath, 211 writtenTy, l) {} 212 213 explicit CXXReinterpretCastExpr(EmptyShell Empty) 214 : CXXNamedCastExpr(CXXReinterpretCastExprClass, Empty) { } 215 216 static bool classof(const Stmt *T) { 217 return T->getStmtClass() == CXXReinterpretCastExprClass; 218 } 219 static bool classof(const CXXReinterpretCastExpr *) { return true; } 220}; 221 222/// CXXConstCastExpr - A C++ @c const_cast expression (C++ [expr.const.cast]), 223/// which can remove type qualifiers but does not change the underlying value. 224/// 225/// This expression node represents a const cast, e.g., 226/// @c const_cast<char*>(PtrToConstChar). 227class CXXConstCastExpr : public CXXNamedCastExpr { 228public: 229 CXXConstCastExpr(QualType ty, Expr *op, TypeSourceInfo *writtenTy, 230 SourceLocation l) 231 : CXXNamedCastExpr(CXXConstCastExprClass, ty, CK_NoOp, op, 232 CXXBaseSpecifierArray(), writtenTy, l) {} 233 234 explicit CXXConstCastExpr(EmptyShell Empty) 235 : CXXNamedCastExpr(CXXConstCastExprClass, Empty) { } 236 237 static bool classof(const Stmt *T) { 238 return T->getStmtClass() == CXXConstCastExprClass; 239 } 240 static bool classof(const CXXConstCastExpr *) { return true; } 241}; 242 243/// CXXBoolLiteralExpr - [C++ 2.13.5] C++ Boolean Literal. 244/// 245class CXXBoolLiteralExpr : public Expr { 246 bool Value; 247 SourceLocation Loc; 248public: 249 CXXBoolLiteralExpr(bool val, QualType Ty, SourceLocation l) : 250 Expr(CXXBoolLiteralExprClass, Ty, false, false), Value(val), Loc(l) {} 251 252 explicit CXXBoolLiteralExpr(EmptyShell Empty) 253 : Expr(CXXBoolLiteralExprClass, Empty) { } 254 255 bool getValue() const { return Value; } 256 void setValue(bool V) { Value = V; } 257 258 virtual SourceRange getSourceRange() const { return SourceRange(Loc); } 259 260 SourceLocation getLocation() const { return Loc; } 261 void setLocation(SourceLocation L) { Loc = L; } 262 263 static bool classof(const Stmt *T) { 264 return T->getStmtClass() == CXXBoolLiteralExprClass; 265 } 266 static bool classof(const CXXBoolLiteralExpr *) { return true; } 267 268 // Iterators 269 virtual child_iterator child_begin(); 270 virtual child_iterator child_end(); 271}; 272 273/// CXXNullPtrLiteralExpr - [C++0x 2.14.7] C++ Pointer Literal 274class CXXNullPtrLiteralExpr : public Expr { 275 SourceLocation Loc; 276public: 277 CXXNullPtrLiteralExpr(QualType Ty, SourceLocation l) : 278 Expr(CXXNullPtrLiteralExprClass, Ty, false, false), Loc(l) {} 279 280 explicit CXXNullPtrLiteralExpr(EmptyShell Empty) 281 : Expr(CXXNullPtrLiteralExprClass, Empty) { } 282 283 virtual SourceRange getSourceRange() const { return SourceRange(Loc); } 284 285 SourceLocation getLocation() const { return Loc; } 286 void setLocation(SourceLocation L) { Loc = L; } 287 288 static bool classof(const Stmt *T) { 289 return T->getStmtClass() == CXXNullPtrLiteralExprClass; 290 } 291 static bool classof(const CXXNullPtrLiteralExpr *) { return true; } 292 293 virtual child_iterator child_begin(); 294 virtual child_iterator child_end(); 295}; 296 297/// CXXTypeidExpr - A C++ @c typeid expression (C++ [expr.typeid]), which gets 298/// the type_info that corresponds to the supplied type, or the (possibly 299/// dynamic) type of the supplied expression. 300/// 301/// This represents code like @c typeid(int) or @c typeid(*objPtr) 302class CXXTypeidExpr : public Expr { 303private: 304 llvm::PointerUnion<Stmt *, TypeSourceInfo *> Operand; 305 SourceRange Range; 306 307public: 308 CXXTypeidExpr(QualType Ty, TypeSourceInfo *Operand, SourceRange R) 309 : Expr(CXXTypeidExprClass, Ty, 310 // typeid is never type-dependent (C++ [temp.dep.expr]p4) 311 false, 312 // typeid is value-dependent if the type or expression are dependent 313 Operand->getType()->isDependentType()), 314 Operand(Operand), Range(R) { } 315 316 CXXTypeidExpr(QualType Ty, Expr *Operand, SourceRange R) 317 : Expr(CXXTypeidExprClass, Ty, 318 // typeid is never type-dependent (C++ [temp.dep.expr]p4) 319 false, 320 // typeid is value-dependent if the type or expression are dependent 321 Operand->isTypeDependent() || Operand->isValueDependent()), 322 Operand(Operand), Range(R) { } 323 324 CXXTypeidExpr(EmptyShell Empty, bool isExpr) 325 : Expr(CXXTypeidExprClass, Empty) { 326 if (isExpr) 327 Operand = (Expr*)0; 328 else 329 Operand = (TypeSourceInfo*)0; 330 } 331 332 bool isTypeOperand() const { return Operand.is<TypeSourceInfo *>(); } 333 334 /// \brief Retrieves the type operand of this typeid() expression after 335 /// various required adjustments (removing reference types, cv-qualifiers). 336 QualType getTypeOperand() const; 337 338 /// \brief Retrieve source information for the type operand. 339 TypeSourceInfo *getTypeOperandSourceInfo() const { 340 assert(isTypeOperand() && "Cannot call getTypeOperand for typeid(expr)"); 341 return Operand.get<TypeSourceInfo *>(); 342 } 343 344 void setTypeOperandSourceInfo(TypeSourceInfo *TSI) { 345 assert(isTypeOperand() && "Cannot call getTypeOperand for typeid(expr)"); 346 Operand = TSI; 347 } 348 349 Expr *getExprOperand() const { 350 assert(!isTypeOperand() && "Cannot call getExprOperand for typeid(type)"); 351 return static_cast<Expr*>(Operand.get<Stmt *>()); 352 } 353 354 void setExprOperand(Expr *E) { 355 assert(!isTypeOperand() && "Cannot call getExprOperand for typeid(type)"); 356 Operand = E; 357 } 358 359 virtual SourceRange getSourceRange() const { return Range; } 360 void setSourceRange(SourceRange R) { Range = R; } 361 362 static bool classof(const Stmt *T) { 363 return T->getStmtClass() == CXXTypeidExprClass; 364 } 365 static bool classof(const CXXTypeidExpr *) { return true; } 366 367 // Iterators 368 virtual child_iterator child_begin(); 369 virtual child_iterator child_end(); 370}; 371 372/// CXXThisExpr - Represents the "this" expression in C++, which is a 373/// pointer to the object on which the current member function is 374/// executing (C++ [expr.prim]p3). Example: 375/// 376/// @code 377/// class Foo { 378/// public: 379/// void bar(); 380/// void test() { this->bar(); } 381/// }; 382/// @endcode 383class CXXThisExpr : public Expr { 384 SourceLocation Loc; 385 bool Implicit : 1; 386 387public: 388 CXXThisExpr(SourceLocation L, QualType Type, bool isImplicit) 389 : Expr(CXXThisExprClass, Type, 390 // 'this' is type-dependent if the class type of the enclosing 391 // member function is dependent (C++ [temp.dep.expr]p2) 392 Type->isDependentType(), Type->isDependentType()), 393 Loc(L), Implicit(isImplicit) { } 394 395 CXXThisExpr(EmptyShell Empty) : Expr(CXXThisExprClass, Empty) {} 396 397 SourceLocation getLocation() const { return Loc; } 398 void setLocation(SourceLocation L) { Loc = L; } 399 400 virtual SourceRange getSourceRange() const { return SourceRange(Loc); } 401 402 bool isImplicit() const { return Implicit; } 403 void setImplicit(bool I) { Implicit = I; } 404 405 static bool classof(const Stmt *T) { 406 return T->getStmtClass() == CXXThisExprClass; 407 } 408 static bool classof(const CXXThisExpr *) { return true; } 409 410 // Iterators 411 virtual child_iterator child_begin(); 412 virtual child_iterator child_end(); 413}; 414 415/// CXXThrowExpr - [C++ 15] C++ Throw Expression. This handles 416/// 'throw' and 'throw' assignment-expression. When 417/// assignment-expression isn't present, Op will be null. 418/// 419class CXXThrowExpr : public Expr { 420 Stmt *Op; 421 SourceLocation ThrowLoc; 422public: 423 // Ty is the void type which is used as the result type of the 424 // exepression. The l is the location of the throw keyword. expr 425 // can by null, if the optional expression to throw isn't present. 426 CXXThrowExpr(Expr *expr, QualType Ty, SourceLocation l) : 427 Expr(CXXThrowExprClass, Ty, false, false), Op(expr), ThrowLoc(l) {} 428 CXXThrowExpr(EmptyShell Empty) : Expr(CXXThrowExprClass, Empty) {} 429 430 const Expr *getSubExpr() const { return cast_or_null<Expr>(Op); } 431 Expr *getSubExpr() { return cast_or_null<Expr>(Op); } 432 void setSubExpr(Expr *E) { Op = E; } 433 434 SourceLocation getThrowLoc() const { return ThrowLoc; } 435 void setThrowLoc(SourceLocation L) { ThrowLoc = L; } 436 437 virtual SourceRange getSourceRange() const { 438 if (getSubExpr() == 0) 439 return SourceRange(ThrowLoc, ThrowLoc); 440 return SourceRange(ThrowLoc, getSubExpr()->getSourceRange().getEnd()); 441 } 442 443 static bool classof(const Stmt *T) { 444 return T->getStmtClass() == CXXThrowExprClass; 445 } 446 static bool classof(const CXXThrowExpr *) { return true; } 447 448 // Iterators 449 virtual child_iterator child_begin(); 450 virtual child_iterator child_end(); 451}; 452 453/// CXXDefaultArgExpr - C++ [dcl.fct.default]. This wraps up a 454/// function call argument that was created from the corresponding 455/// parameter's default argument, when the call did not explicitly 456/// supply arguments for all of the parameters. 457class CXXDefaultArgExpr : public Expr { 458 /// \brief The parameter whose default is being used. 459 /// 460 /// When the bit is set, the subexpression is stored after the 461 /// CXXDefaultArgExpr itself. When the bit is clear, the parameter's 462 /// actual default expression is the subexpression. 463 llvm::PointerIntPair<ParmVarDecl *, 1, bool> Param; 464 465 /// \brief The location where the default argument expression was used. 466 SourceLocation Loc; 467 468 CXXDefaultArgExpr(StmtClass SC, SourceLocation Loc, ParmVarDecl *param) 469 : Expr(SC, 470 param->hasUnparsedDefaultArg() 471 ? param->getType().getNonReferenceType() 472 : param->getDefaultArg()->getType(), 473 false, false), 474 Param(param, false), Loc(Loc) { } 475 476 CXXDefaultArgExpr(StmtClass SC, SourceLocation Loc, ParmVarDecl *param, 477 Expr *SubExpr) 478 : Expr(SC, SubExpr->getType(), false, false), Param(param, true), Loc(Loc) { 479 *reinterpret_cast<Expr **>(this + 1) = SubExpr; 480 } 481 482public: 483 CXXDefaultArgExpr(EmptyShell Empty) : Expr(CXXDefaultArgExprClass, Empty) {} 484 485 486 // Param is the parameter whose default argument is used by this 487 // expression. 488 static CXXDefaultArgExpr *Create(ASTContext &C, SourceLocation Loc, 489 ParmVarDecl *Param) { 490 return new (C) CXXDefaultArgExpr(CXXDefaultArgExprClass, Loc, Param); 491 } 492 493 // Param is the parameter whose default argument is used by this 494 // expression, and SubExpr is the expression that will actually be used. 495 static CXXDefaultArgExpr *Create(ASTContext &C, 496 SourceLocation Loc, 497 ParmVarDecl *Param, 498 Expr *SubExpr); 499 500 // Retrieve the parameter that the argument was created from. 501 const ParmVarDecl *getParam() const { return Param.getPointer(); } 502 ParmVarDecl *getParam() { return Param.getPointer(); } 503 504 // Retrieve the actual argument to the function call. 505 const Expr *getExpr() const { 506 if (Param.getInt()) 507 return *reinterpret_cast<Expr const * const*> (this + 1); 508 return getParam()->getDefaultArg(); 509 } 510 Expr *getExpr() { 511 if (Param.getInt()) 512 return *reinterpret_cast<Expr **> (this + 1); 513 return getParam()->getDefaultArg(); 514 } 515 516 /// \brief Retrieve the location where this default argument was actually 517 /// used. 518 SourceLocation getUsedLocation() const { return Loc; } 519 520 virtual SourceRange getSourceRange() const { 521 // Default argument expressions have no representation in the 522 // source, so they have an empty source range. 523 return SourceRange(); 524 } 525 526 static bool classof(const Stmt *T) { 527 return T->getStmtClass() == CXXDefaultArgExprClass; 528 } 529 static bool classof(const CXXDefaultArgExpr *) { return true; } 530 531 // Iterators 532 virtual child_iterator child_begin(); 533 virtual child_iterator child_end(); 534 535 friend class PCHStmtReader; 536 friend class PCHStmtWriter; 537}; 538 539/// CXXTemporary - Represents a C++ temporary. 540class CXXTemporary { 541 /// Destructor - The destructor that needs to be called. 542 const CXXDestructorDecl *Destructor; 543 544 CXXTemporary(const CXXDestructorDecl *destructor) 545 : Destructor(destructor) { } 546 547public: 548 static CXXTemporary *Create(ASTContext &C, 549 const CXXDestructorDecl *Destructor); 550 551 const CXXDestructorDecl *getDestructor() const { return Destructor; } 552}; 553 554/// \brief Represents binding an expression to a temporary. 555/// 556/// This ensures the destructor is called for the temporary. It should only be 557/// needed for non-POD, non-trivially destructable class types. For example: 558/// 559/// \code 560/// struct S { 561/// S() { } // User defined constructor makes S non-POD. 562/// ~S() { } // User defined destructor makes it non-trivial. 563/// }; 564/// void test() { 565/// const S &s_ref = S(); // Requires a CXXBindTemporaryExpr. 566/// } 567/// \endcode 568class CXXBindTemporaryExpr : public Expr { 569 CXXTemporary *Temp; 570 571 Stmt *SubExpr; 572 573 CXXBindTemporaryExpr(CXXTemporary *temp, Expr* subexpr) 574 : Expr(CXXBindTemporaryExprClass, subexpr->getType(), false, false), 575 Temp(temp), SubExpr(subexpr) { } 576 577public: 578 CXXBindTemporaryExpr(EmptyShell Empty) 579 : Expr(CXXBindTemporaryExprClass, Empty), Temp(0), SubExpr(0) {} 580 581 static CXXBindTemporaryExpr *Create(ASTContext &C, CXXTemporary *Temp, 582 Expr* SubExpr); 583 584 CXXTemporary *getTemporary() { return Temp; } 585 const CXXTemporary *getTemporary() const { return Temp; } 586 void setTemporary(CXXTemporary *T) { Temp = T; } 587 588 const Expr *getSubExpr() const { return cast<Expr>(SubExpr); } 589 Expr *getSubExpr() { return cast<Expr>(SubExpr); } 590 void setSubExpr(Expr *E) { SubExpr = E; } 591 592 virtual SourceRange getSourceRange() const { 593 return SubExpr->getSourceRange(); 594 } 595 596 // Implement isa/cast/dyncast/etc. 597 static bool classof(const Stmt *T) { 598 return T->getStmtClass() == CXXBindTemporaryExprClass; 599 } 600 static bool classof(const CXXBindTemporaryExpr *) { return true; } 601 602 // Iterators 603 virtual child_iterator child_begin(); 604 virtual child_iterator child_end(); 605}; 606 607/// CXXBindReferenceExpr - Represents binding an expression to a reference. 608/// In the example: 609/// 610/// const int &i = 10; 611/// 612/// a bind reference expression is inserted to indicate that 10 is bound to 613/// a reference, and that a temporary needs to be created to hold the 614/// value. 615class CXXBindReferenceExpr : public Expr { 616 // SubExpr - The expression being bound. 617 Stmt *SubExpr; 618 619 // ExtendsLifetime - Whether binding this reference extends the lifetime of 620 // the expression being bound. FIXME: Add C++ reference. 621 bool ExtendsLifetime; 622 623 /// RequiresTemporaryCopy - Whether binding the subexpression requires a 624 /// temporary copy. 625 bool RequiresTemporaryCopy; 626 627 CXXBindReferenceExpr(Expr *subexpr, bool ExtendsLifetime, 628 bool RequiresTemporaryCopy) 629 : Expr(CXXBindReferenceExprClass, subexpr->getType(), false, false), 630 SubExpr(subexpr), ExtendsLifetime(ExtendsLifetime), 631 RequiresTemporaryCopy(RequiresTemporaryCopy) { } 632 633public: 634 static CXXBindReferenceExpr *Create(ASTContext &C, Expr *SubExpr, 635 bool ExtendsLifetime, 636 bool RequiresTemporaryCopy); 637 638 explicit CXXBindReferenceExpr(EmptyShell Empty) 639 : Expr(CXXBindReferenceExprClass, Empty) { } 640 641 const Expr *getSubExpr() const { return cast<Expr>(SubExpr); } 642 Expr *getSubExpr() { return cast<Expr>(SubExpr); } 643 void setSubExpr(Expr *E) { SubExpr = E; } 644 645 virtual SourceRange getSourceRange() const { 646 return SubExpr->getSourceRange(); 647 } 648 649 /// requiresTemporaryCopy - Whether binding the subexpression requires a 650 /// temporary copy. 651 bool requiresTemporaryCopy() const { return RequiresTemporaryCopy; } 652 653 // extendsLifetime - Whether binding this reference extends the lifetime of 654 // the expression being bound. FIXME: Add C++ reference. 655 bool extendsLifetime() const { return ExtendsLifetime; } 656 657 // Implement isa/cast/dyncast/etc. 658 static bool classof(const Stmt *T) { 659 return T->getStmtClass() == CXXBindReferenceExprClass; 660 } 661 static bool classof(const CXXBindReferenceExpr *) { return true; } 662 663 // Iterators 664 virtual child_iterator child_begin(); 665 virtual child_iterator child_end(); 666 667 friend class PCHStmtReader; 668}; 669 670/// CXXConstructExpr - Represents a call to a C++ constructor. 671class CXXConstructExpr : public Expr { 672public: 673 enum ConstructionKind { 674 CK_Complete, 675 CK_NonVirtualBase, 676 CK_VirtualBase 677 }; 678 679private: 680 CXXConstructorDecl *Constructor; 681 682 SourceLocation Loc; 683 bool Elidable : 1; 684 bool ZeroInitialization : 1; 685 unsigned ConstructKind : 2; 686 Stmt **Args; 687 unsigned NumArgs; 688 689protected: 690 CXXConstructExpr(ASTContext &C, StmtClass SC, QualType T, 691 SourceLocation Loc, 692 CXXConstructorDecl *d, bool elidable, 693 Expr **args, unsigned numargs, 694 bool ZeroInitialization = false, 695 ConstructionKind ConstructKind = CK_Complete); 696 697 /// \brief Construct an empty C++ construction expression. 698 CXXConstructExpr(StmtClass SC, EmptyShell Empty) 699 : Expr(SC, Empty), Constructor(0), Elidable(0), ZeroInitialization(0), 700 ConstructKind(0), Args(0), NumArgs(0) { } 701 702public: 703 /// \brief Construct an empty C++ construction expression. 704 explicit CXXConstructExpr(EmptyShell Empty) 705 : Expr(CXXConstructExprClass, Empty), Constructor(0), 706 Elidable(0), ZeroInitialization(0), 707 ConstructKind(0), Args(0), NumArgs(0) { } 708 709 static CXXConstructExpr *Create(ASTContext &C, QualType T, 710 SourceLocation Loc, 711 CXXConstructorDecl *D, bool Elidable, 712 Expr **Args, unsigned NumArgs, 713 bool ZeroInitialization = false, 714 ConstructionKind ConstructKind = CK_Complete); 715 716 717 CXXConstructorDecl* getConstructor() const { return Constructor; } 718 void setConstructor(CXXConstructorDecl *C) { Constructor = C; } 719 720 SourceLocation getLocation() const { return Loc; } 721 void setLocation(SourceLocation Loc) { this->Loc = Loc; } 722 723 /// \brief Whether this construction is elidable. 724 bool isElidable() const { return Elidable; } 725 void setElidable(bool E) { Elidable = E; } 726 727 /// \brief Whether this construction first requires 728 /// zero-initialization before the initializer is called. 729 bool requiresZeroInitialization() const { return ZeroInitialization; } 730 void setRequiresZeroInitialization(bool ZeroInit) { 731 ZeroInitialization = ZeroInit; 732 } 733 734 /// \brief Determines whether this constructor is actually constructing 735 /// a base class (rather than a complete object). 736 ConstructionKind getConstructionKind() const { 737 return (ConstructionKind)ConstructKind; 738 } 739 void setConstructionKind(ConstructionKind CK) { 740 ConstructKind = CK; 741 } 742 743 typedef ExprIterator arg_iterator; 744 typedef ConstExprIterator const_arg_iterator; 745 746 arg_iterator arg_begin() { return Args; } 747 arg_iterator arg_end() { return Args + NumArgs; } 748 const_arg_iterator arg_begin() const { return Args; } 749 const_arg_iterator arg_end() const { return Args + NumArgs; } 750 751 Expr **getArgs() const { return reinterpret_cast<Expr **>(Args); } 752 unsigned getNumArgs() const { return NumArgs; } 753 754 /// getArg - Return the specified argument. 755 Expr *getArg(unsigned Arg) { 756 assert(Arg < NumArgs && "Arg access out of range!"); 757 return cast<Expr>(Args[Arg]); 758 } 759 const Expr *getArg(unsigned Arg) const { 760 assert(Arg < NumArgs && "Arg access out of range!"); 761 return cast<Expr>(Args[Arg]); 762 } 763 764 /// setArg - Set the specified argument. 765 void setArg(unsigned Arg, Expr *ArgExpr) { 766 assert(Arg < NumArgs && "Arg access out of range!"); 767 Args[Arg] = ArgExpr; 768 } 769 770 virtual SourceRange getSourceRange() const; 771 772 static bool classof(const Stmt *T) { 773 return T->getStmtClass() == CXXConstructExprClass || 774 T->getStmtClass() == CXXTemporaryObjectExprClass; 775 } 776 static bool classof(const CXXConstructExpr *) { return true; } 777 778 // Iterators 779 virtual child_iterator child_begin(); 780 virtual child_iterator child_end(); 781 782 friend class PCHStmtReader; 783}; 784 785/// CXXFunctionalCastExpr - Represents an explicit C++ type conversion 786/// that uses "functional" notion (C++ [expr.type.conv]). Example: @c 787/// x = int(0.5); 788class CXXFunctionalCastExpr : public ExplicitCastExpr { 789 SourceLocation TyBeginLoc; 790 SourceLocation RParenLoc; 791public: 792 CXXFunctionalCastExpr(QualType ty, TypeSourceInfo *writtenTy, 793 SourceLocation tyBeginLoc, CastKind kind, 794 Expr *castExpr, CXXBaseSpecifierArray BasePath, 795 SourceLocation rParenLoc) 796 : ExplicitCastExpr(CXXFunctionalCastExprClass, ty, kind, castExpr, 797 BasePath, writtenTy), 798 TyBeginLoc(tyBeginLoc), RParenLoc(rParenLoc) {} 799 800 explicit CXXFunctionalCastExpr(EmptyShell Shell) 801 : ExplicitCastExpr(CXXFunctionalCastExprClass, Shell) { } 802 803 SourceLocation getTypeBeginLoc() const { return TyBeginLoc; } 804 void setTypeBeginLoc(SourceLocation L) { TyBeginLoc = L; } 805 SourceLocation getRParenLoc() const { return RParenLoc; } 806 void setRParenLoc(SourceLocation L) { RParenLoc = L; } 807 808 virtual SourceRange getSourceRange() const { 809 return SourceRange(TyBeginLoc, RParenLoc); 810 } 811 static bool classof(const Stmt *T) { 812 return T->getStmtClass() == CXXFunctionalCastExprClass; 813 } 814 static bool classof(const CXXFunctionalCastExpr *) { return true; } 815}; 816 817/// @brief Represents a C++ functional cast expression that builds a 818/// temporary object. 819/// 820/// This expression type represents a C++ "functional" cast 821/// (C++[expr.type.conv]) with N != 1 arguments that invokes a 822/// constructor to build a temporary object. With N == 1 arguments the 823/// functional cast expression will be represented by CXXFunctionalCastExpr. 824/// Example: 825/// @code 826/// struct X { X(int, float); } 827/// 828/// X create_X() { 829/// return X(1, 3.14f); // creates a CXXTemporaryObjectExpr 830/// }; 831/// @endcode 832class CXXTemporaryObjectExpr : public CXXConstructExpr { 833 SourceLocation TyBeginLoc; 834 SourceLocation RParenLoc; 835 836public: 837 CXXTemporaryObjectExpr(ASTContext &C, CXXConstructorDecl *Cons, 838 QualType writtenTy, SourceLocation tyBeginLoc, 839 Expr **Args,unsigned NumArgs, 840 SourceLocation rParenLoc, 841 bool ZeroInitialization = false); 842 explicit CXXTemporaryObjectExpr(EmptyShell Empty) 843 : CXXConstructExpr(CXXTemporaryObjectExprClass, Empty) { } 844 845 SourceLocation getTypeBeginLoc() const { return TyBeginLoc; } 846 SourceLocation getRParenLoc() const { return RParenLoc; } 847 848 virtual SourceRange getSourceRange() const { 849 return SourceRange(TyBeginLoc, RParenLoc); 850 } 851 static bool classof(const Stmt *T) { 852 return T->getStmtClass() == CXXTemporaryObjectExprClass; 853 } 854 static bool classof(const CXXTemporaryObjectExpr *) { return true; } 855 856 friend class PCHStmtReader; 857}; 858 859/// CXXScalarValueInitExpr - [C++ 5.2.3p2] 860/// Expression "T()" which creates a value-initialized rvalue of type 861/// T, which is a non-class type. 862/// 863class CXXScalarValueInitExpr : public Expr { 864 SourceLocation TyBeginLoc; 865 SourceLocation RParenLoc; 866 867public: 868 CXXScalarValueInitExpr(QualType ty, SourceLocation tyBeginLoc, 869 SourceLocation rParenLoc ) : 870 Expr(CXXScalarValueInitExprClass, ty, false, false), 871 TyBeginLoc(tyBeginLoc), RParenLoc(rParenLoc) {} 872 explicit CXXScalarValueInitExpr(EmptyShell Shell) 873 : Expr(CXXScalarValueInitExprClass, Shell) { } 874 875 SourceLocation getTypeBeginLoc() const { return TyBeginLoc; } 876 SourceLocation getRParenLoc() const { return RParenLoc; } 877 878 void setTypeBeginLoc(SourceLocation L) { TyBeginLoc = L; } 879 void setRParenLoc(SourceLocation L) { RParenLoc = L; } 880 881 /// @brief Whether this initialization expression was 882 /// implicitly-generated. 883 bool isImplicit() const { 884 return TyBeginLoc.isInvalid() && RParenLoc.isInvalid(); 885 } 886 887 virtual SourceRange getSourceRange() const { 888 return SourceRange(TyBeginLoc, RParenLoc); 889 } 890 891 static bool classof(const Stmt *T) { 892 return T->getStmtClass() == CXXScalarValueInitExprClass; 893 } 894 static bool classof(const CXXScalarValueInitExpr *) { return true; } 895 896 // Iterators 897 virtual child_iterator child_begin(); 898 virtual child_iterator child_end(); 899}; 900 901/// CXXNewExpr - A new expression for memory allocation and constructor calls, 902/// e.g: "new CXXNewExpr(foo)". 903class CXXNewExpr : public Expr { 904 // Was the usage ::new, i.e. is the global new to be used? 905 bool GlobalNew : 1; 906 // Is there an initializer? If not, built-ins are uninitialized, else they're 907 // value-initialized. 908 bool Initializer : 1; 909 // Do we allocate an array? If so, the first SubExpr is the size expression. 910 bool Array : 1; 911 // The number of placement new arguments. 912 unsigned NumPlacementArgs : 15; 913 // The number of constructor arguments. This may be 1 even for non-class 914 // types; use the pseudo copy constructor. 915 unsigned NumConstructorArgs : 14; 916 // Contains an optional array size expression, any number of optional 917 // placement arguments, and any number of optional constructor arguments, 918 // in that order. 919 Stmt **SubExprs; 920 // Points to the allocation function used. 921 FunctionDecl *OperatorNew; 922 // Points to the deallocation function used in case of error. May be null. 923 FunctionDecl *OperatorDelete; 924 // Points to the constructor used. Cannot be null if AllocType is a record; 925 // it would still point at the default constructor (even an implicit one). 926 // Must be null for all other types. 927 CXXConstructorDecl *Constructor; 928 929 /// \brief If the allocated type was expressed as a parenthesized type-id, 930 /// the source range covering the parenthesized type-id. 931 SourceRange TypeIdParens; 932 933 SourceLocation StartLoc; 934 SourceLocation EndLoc; 935 936 friend class PCHStmtReader; 937public: 938 CXXNewExpr(ASTContext &C, bool globalNew, FunctionDecl *operatorNew, 939 Expr **placementArgs, unsigned numPlaceArgs, 940 SourceRange TypeIdParens, 941 Expr *arraySize, CXXConstructorDecl *constructor, bool initializer, 942 Expr **constructorArgs, unsigned numConsArgs, 943 FunctionDecl *operatorDelete, QualType ty, 944 SourceLocation startLoc, SourceLocation endLoc); 945 explicit CXXNewExpr(EmptyShell Shell) 946 : Expr(CXXNewExprClass, Shell), SubExprs(0) { } 947 948 void AllocateArgsArray(ASTContext &C, bool isArray, unsigned numPlaceArgs, 949 unsigned numConsArgs); 950 951 QualType getAllocatedType() const { 952 assert(getType()->isPointerType()); 953 return getType()->getAs<PointerType>()->getPointeeType(); 954 } 955 956 FunctionDecl *getOperatorNew() const { return OperatorNew; } 957 void setOperatorNew(FunctionDecl *D) { OperatorNew = D; } 958 FunctionDecl *getOperatorDelete() const { return OperatorDelete; } 959 void setOperatorDelete(FunctionDecl *D) { OperatorDelete = D; } 960 CXXConstructorDecl *getConstructor() const { return Constructor; } 961 void setConstructor(CXXConstructorDecl *D) { Constructor = D; } 962 963 bool isArray() const { return Array; } 964 Expr *getArraySize() { 965 return Array ? cast<Expr>(SubExprs[0]) : 0; 966 } 967 const Expr *getArraySize() const { 968 return Array ? cast<Expr>(SubExprs[0]) : 0; 969 } 970 971 unsigned getNumPlacementArgs() const { return NumPlacementArgs; } 972 Expr *getPlacementArg(unsigned i) { 973 assert(i < NumPlacementArgs && "Index out of range"); 974 return cast<Expr>(SubExprs[Array + i]); 975 } 976 const Expr *getPlacementArg(unsigned i) const { 977 assert(i < NumPlacementArgs && "Index out of range"); 978 return cast<Expr>(SubExprs[Array + i]); 979 } 980 981 bool isParenTypeId() const { return TypeIdParens.isValid(); } 982 SourceRange getTypeIdParens() const { return TypeIdParens; } 983 984 bool isGlobalNew() const { return GlobalNew; } 985 void setGlobalNew(bool V) { GlobalNew = V; } 986 bool hasInitializer() const { return Initializer; } 987 void setHasInitializer(bool V) { Initializer = V; } 988 989 unsigned getNumConstructorArgs() const { return NumConstructorArgs; } 990 Expr *getConstructorArg(unsigned i) { 991 assert(i < NumConstructorArgs && "Index out of range"); 992 return cast<Expr>(SubExprs[Array + NumPlacementArgs + i]); 993 } 994 const Expr *getConstructorArg(unsigned i) const { 995 assert(i < NumConstructorArgs && "Index out of range"); 996 return cast<Expr>(SubExprs[Array + NumPlacementArgs + i]); 997 } 998 999 typedef ExprIterator arg_iterator; 1000 typedef ConstExprIterator const_arg_iterator; 1001 1002 arg_iterator placement_arg_begin() { 1003 return SubExprs + Array; 1004 } 1005 arg_iterator placement_arg_end() { 1006 return SubExprs + Array + getNumPlacementArgs(); 1007 } 1008 const_arg_iterator placement_arg_begin() const { 1009 return SubExprs + Array; 1010 } 1011 const_arg_iterator placement_arg_end() const { 1012 return SubExprs + Array + getNumPlacementArgs(); 1013 } 1014 1015 arg_iterator constructor_arg_begin() { 1016 return SubExprs + Array + getNumPlacementArgs(); 1017 } 1018 arg_iterator constructor_arg_end() { 1019 return SubExprs + Array + getNumPlacementArgs() + getNumConstructorArgs(); 1020 } 1021 const_arg_iterator constructor_arg_begin() const { 1022 return SubExprs + Array + getNumPlacementArgs(); 1023 } 1024 const_arg_iterator constructor_arg_end() const { 1025 return SubExprs + Array + getNumPlacementArgs() + getNumConstructorArgs(); 1026 } 1027 1028 typedef Stmt **raw_arg_iterator; 1029 raw_arg_iterator raw_arg_begin() { return SubExprs; } 1030 raw_arg_iterator raw_arg_end() { 1031 return SubExprs + Array + getNumPlacementArgs() + getNumConstructorArgs(); 1032 } 1033 const_arg_iterator raw_arg_begin() const { return SubExprs; } 1034 const_arg_iterator raw_arg_end() const { return constructor_arg_end(); } 1035 1036 1037 SourceLocation getStartLoc() const { return StartLoc; } 1038 void setStartLoc(SourceLocation L) { StartLoc = L; } 1039 SourceLocation getEndLoc() const { return EndLoc; } 1040 void setEndLoc(SourceLocation L) { EndLoc = L; } 1041 1042 virtual SourceRange getSourceRange() const { 1043 return SourceRange(StartLoc, EndLoc); 1044 } 1045 1046 static bool classof(const Stmt *T) { 1047 return T->getStmtClass() == CXXNewExprClass; 1048 } 1049 static bool classof(const CXXNewExpr *) { return true; } 1050 1051 // Iterators 1052 virtual child_iterator child_begin(); 1053 virtual child_iterator child_end(); 1054}; 1055 1056/// CXXDeleteExpr - A delete expression for memory deallocation and destructor 1057/// calls, e.g. "delete[] pArray". 1058class CXXDeleteExpr : public Expr { 1059 // Is this a forced global delete, i.e. "::delete"? 1060 bool GlobalDelete : 1; 1061 // Is this the array form of delete, i.e. "delete[]"? 1062 bool ArrayForm : 1; 1063 // Points to the operator delete overload that is used. Could be a member. 1064 FunctionDecl *OperatorDelete; 1065 // The pointer expression to be deleted. 1066 Stmt *Argument; 1067 // Location of the expression. 1068 SourceLocation Loc; 1069public: 1070 CXXDeleteExpr(QualType ty, bool globalDelete, bool arrayForm, 1071 FunctionDecl *operatorDelete, Expr *arg, SourceLocation loc) 1072 : Expr(CXXDeleteExprClass, ty, false, false), GlobalDelete(globalDelete), 1073 ArrayForm(arrayForm), OperatorDelete(operatorDelete), Argument(arg), 1074 Loc(loc) { } 1075 explicit CXXDeleteExpr(EmptyShell Shell) 1076 : Expr(CXXDeleteExprClass, Shell), OperatorDelete(0), Argument(0) { } 1077 1078 bool isGlobalDelete() const { return GlobalDelete; } 1079 bool isArrayForm() const { return ArrayForm; } 1080 1081 void setGlobalDelete(bool V) { GlobalDelete = V; } 1082 void setArrayForm(bool V) { ArrayForm = V; } 1083 1084 FunctionDecl *getOperatorDelete() const { return OperatorDelete; } 1085 void setOperatorDelete(FunctionDecl *D) { OperatorDelete = D; } 1086 1087 Expr *getArgument() { return cast<Expr>(Argument); } 1088 const Expr *getArgument() const { return cast<Expr>(Argument); } 1089 void setArgument(Expr *E) { Argument = E; } 1090 1091 virtual SourceRange getSourceRange() const { 1092 return SourceRange(Loc, Argument->getLocEnd()); 1093 } 1094 void setStartLoc(SourceLocation L) { Loc = L; } 1095 1096 static bool classof(const Stmt *T) { 1097 return T->getStmtClass() == CXXDeleteExprClass; 1098 } 1099 static bool classof(const CXXDeleteExpr *) { return true; } 1100 1101 // Iterators 1102 virtual child_iterator child_begin(); 1103 virtual child_iterator child_end(); 1104}; 1105 1106/// \brief Structure used to store the type being destroyed by a 1107/// pseudo-destructor expression. 1108class PseudoDestructorTypeStorage { 1109 /// \brief Either the type source information or the name of the type, if 1110 /// it couldn't be resolved due to type-dependence. 1111 llvm::PointerUnion<TypeSourceInfo *, IdentifierInfo *> Type; 1112 1113 /// \brief The starting source location of the pseudo-destructor type. 1114 SourceLocation Location; 1115 1116public: 1117 PseudoDestructorTypeStorage() { } 1118 1119 PseudoDestructorTypeStorage(IdentifierInfo *II, SourceLocation Loc) 1120 : Type(II), Location(Loc) { } 1121 1122 PseudoDestructorTypeStorage(TypeSourceInfo *Info); 1123 1124 TypeSourceInfo *getTypeSourceInfo() const { 1125 return Type.dyn_cast<TypeSourceInfo *>(); 1126 } 1127 1128 IdentifierInfo *getIdentifier() const { 1129 return Type.dyn_cast<IdentifierInfo *>(); 1130 } 1131 1132 SourceLocation getLocation() const { return Location; } 1133}; 1134 1135/// \brief Represents a C++ pseudo-destructor (C++ [expr.pseudo]). 1136/// 1137/// A pseudo-destructor is an expression that looks like a member access to a 1138/// destructor of a scalar type, except that scalar types don't have 1139/// destructors. For example: 1140/// 1141/// \code 1142/// typedef int T; 1143/// void f(int *p) { 1144/// p->T::~T(); 1145/// } 1146/// \endcode 1147/// 1148/// Pseudo-destructors typically occur when instantiating templates such as: 1149/// 1150/// \code 1151/// template<typename T> 1152/// void destroy(T* ptr) { 1153/// ptr->T::~T(); 1154/// } 1155/// \endcode 1156/// 1157/// for scalar types. A pseudo-destructor expression has no run-time semantics 1158/// beyond evaluating the base expression. 1159class CXXPseudoDestructorExpr : public Expr { 1160 /// \brief The base expression (that is being destroyed). 1161 Stmt *Base; 1162 1163 /// \brief Whether the operator was an arrow ('->'); otherwise, it was a 1164 /// period ('.'). 1165 bool IsArrow : 1; 1166 1167 /// \brief The location of the '.' or '->' operator. 1168 SourceLocation OperatorLoc; 1169 1170 /// \brief The nested-name-specifier that follows the operator, if present. 1171 NestedNameSpecifier *Qualifier; 1172 1173 /// \brief The source range that covers the nested-name-specifier, if 1174 /// present. 1175 SourceRange QualifierRange; 1176 1177 /// \brief The type that precedes the '::' in a qualified pseudo-destructor 1178 /// expression. 1179 TypeSourceInfo *ScopeType; 1180 1181 /// \brief The location of the '::' in a qualified pseudo-destructor 1182 /// expression. 1183 SourceLocation ColonColonLoc; 1184 1185 /// \brief The location of the '~'. 1186 SourceLocation TildeLoc; 1187 1188 /// \brief The type being destroyed, or its name if we were unable to 1189 /// resolve the name. 1190 PseudoDestructorTypeStorage DestroyedType; 1191 1192public: 1193 CXXPseudoDestructorExpr(ASTContext &Context, 1194 Expr *Base, bool isArrow, SourceLocation OperatorLoc, 1195 NestedNameSpecifier *Qualifier, 1196 SourceRange QualifierRange, 1197 TypeSourceInfo *ScopeType, 1198 SourceLocation ColonColonLoc, 1199 SourceLocation TildeLoc, 1200 PseudoDestructorTypeStorage DestroyedType) 1201 : Expr(CXXPseudoDestructorExprClass, 1202 Context.getPointerType(Context.getFunctionType(Context.VoidTy, 0, 0, 1203 false, 0, false, 1204 false, 0, 0, 1205 FunctionType::ExtInfo())), 1206 /*isTypeDependent=*/(Base->isTypeDependent() || 1207 (DestroyedType.getTypeSourceInfo() && 1208 DestroyedType.getTypeSourceInfo()->getType()->isDependentType())), 1209 /*isValueDependent=*/Base->isValueDependent()), 1210 Base(static_cast<Stmt *>(Base)), IsArrow(isArrow), 1211 OperatorLoc(OperatorLoc), Qualifier(Qualifier), 1212 QualifierRange(QualifierRange), 1213 ScopeType(ScopeType), ColonColonLoc(ColonColonLoc), TildeLoc(TildeLoc), 1214 DestroyedType(DestroyedType) { } 1215 1216 explicit CXXPseudoDestructorExpr(EmptyShell Shell) 1217 : Expr(CXXPseudoDestructorExprClass, Shell), 1218 Base(0), IsArrow(false), Qualifier(0), ScopeType(0) { } 1219 1220 void setBase(Expr *E) { Base = E; } 1221 Expr *getBase() const { return cast<Expr>(Base); } 1222 1223 /// \brief Determines whether this member expression actually had 1224 /// a C++ nested-name-specifier prior to the name of the member, e.g., 1225 /// x->Base::foo. 1226 bool hasQualifier() const { return Qualifier != 0; } 1227 1228 /// \brief If the member name was qualified, retrieves the source range of 1229 /// the nested-name-specifier that precedes the member name. Otherwise, 1230 /// returns an empty source range. 1231 SourceRange getQualifierRange() const { return QualifierRange; } 1232 void setQualifierRange(SourceRange R) { QualifierRange = R; } 1233 1234 /// \brief If the member name was qualified, retrieves the 1235 /// nested-name-specifier that precedes the member name. Otherwise, returns 1236 /// NULL. 1237 NestedNameSpecifier *getQualifier() const { return Qualifier; } 1238 void setQualifier(NestedNameSpecifier *NNS) { Qualifier = NNS; } 1239 1240 /// \brief Determine whether this pseudo-destructor expression was written 1241 /// using an '->' (otherwise, it used a '.'). 1242 bool isArrow() const { return IsArrow; } 1243 void setArrow(bool A) { IsArrow = A; } 1244 1245 /// \brief Retrieve the location of the '.' or '->' operator. 1246 SourceLocation getOperatorLoc() const { return OperatorLoc; } 1247 void setOperatorLoc(SourceLocation L) { OperatorLoc = L; } 1248 1249 /// \brief Retrieve the scope type in a qualified pseudo-destructor 1250 /// expression. 1251 /// 1252 /// Pseudo-destructor expressions can have extra qualification within them 1253 /// that is not part of the nested-name-specifier, e.g., \c p->T::~T(). 1254 /// Here, if the object type of the expression is (or may be) a scalar type, 1255 /// \p T may also be a scalar type and, therefore, cannot be part of a 1256 /// nested-name-specifier. It is stored as the "scope type" of the pseudo- 1257 /// destructor expression. 1258 TypeSourceInfo *getScopeTypeInfo() const { return ScopeType; } 1259 void setScopeTypeInfo(TypeSourceInfo *Info) { ScopeType = Info; } 1260 1261 /// \brief Retrieve the location of the '::' in a qualified pseudo-destructor 1262 /// expression. 1263 SourceLocation getColonColonLoc() const { return ColonColonLoc; } 1264 void setColonColonLoc(SourceLocation L) { ColonColonLoc = L; } 1265 1266 /// \brief Retrieve the location of the '~'. 1267 SourceLocation getTildeLoc() const { return TildeLoc; } 1268 void setTildeLoc(SourceLocation L) { TildeLoc = L; } 1269 1270 /// \brief Retrieve the source location information for the type 1271 /// being destroyed. 1272 /// 1273 /// This type-source information is available for non-dependent 1274 /// pseudo-destructor expressions and some dependent pseudo-destructor 1275 /// expressions. Returns NULL if we only have the identifier for a 1276 /// dependent pseudo-destructor expression. 1277 TypeSourceInfo *getDestroyedTypeInfo() const { 1278 return DestroyedType.getTypeSourceInfo(); 1279 } 1280 1281 /// \brief In a dependent pseudo-destructor expression for which we do not 1282 /// have full type information on the destroyed type, provides the name 1283 /// of the destroyed type. 1284 IdentifierInfo *getDestroyedTypeIdentifier() const { 1285 return DestroyedType.getIdentifier(); 1286 } 1287 1288 /// \brief Retrieve the type being destroyed. 1289 QualType getDestroyedType() const; 1290 1291 /// \brief Retrieve the starting location of the type being destroyed. 1292 SourceLocation getDestroyedTypeLoc() const { 1293 return DestroyedType.getLocation(); 1294 } 1295 1296 /// \brief Set the name of destroyed type for a dependent pseudo-destructor 1297 /// expression. 1298 void setDestroyedType(IdentifierInfo *II, SourceLocation Loc) { 1299 DestroyedType = PseudoDestructorTypeStorage(II, Loc); 1300 } 1301 1302 /// \brief Set the destroyed type. 1303 void setDestroyedType(TypeSourceInfo *Info) { 1304 DestroyedType = PseudoDestructorTypeStorage(Info); 1305 } 1306 1307 virtual SourceRange getSourceRange() const; 1308 1309 static bool classof(const Stmt *T) { 1310 return T->getStmtClass() == CXXPseudoDestructorExprClass; 1311 } 1312 static bool classof(const CXXPseudoDestructorExpr *) { return true; } 1313 1314 // Iterators 1315 virtual child_iterator child_begin(); 1316 virtual child_iterator child_end(); 1317}; 1318 1319/// UnaryTypeTraitExpr - A GCC or MS unary type trait, as used in the 1320/// implementation of TR1/C++0x type trait templates. 1321/// Example: 1322/// __is_pod(int) == true 1323/// __is_enum(std::string) == false 1324class UnaryTypeTraitExpr : public Expr { 1325 /// UTT - The trait. 1326 UnaryTypeTrait UTT; 1327 1328 /// Loc - The location of the type trait keyword. 1329 SourceLocation Loc; 1330 1331 /// RParen - The location of the closing paren. 1332 SourceLocation RParen; 1333 1334 /// QueriedType - The type we're testing. 1335 QualType QueriedType; 1336 1337public: 1338 UnaryTypeTraitExpr(SourceLocation loc, UnaryTypeTrait utt, QualType queried, 1339 SourceLocation rparen, QualType ty) 1340 : Expr(UnaryTypeTraitExprClass, ty, false, queried->isDependentType()), 1341 UTT(utt), Loc(loc), RParen(rparen), QueriedType(queried) { } 1342 1343 explicit UnaryTypeTraitExpr(EmptyShell Empty) 1344 : Expr(UnaryTypeTraitExprClass, Empty), UTT((UnaryTypeTrait)0) { } 1345 1346 virtual SourceRange getSourceRange() const { return SourceRange(Loc, RParen);} 1347 1348 UnaryTypeTrait getTrait() const { return UTT; } 1349 1350 QualType getQueriedType() const { return QueriedType; } 1351 1352 bool EvaluateTrait(ASTContext&) const; 1353 1354 static bool classof(const Stmt *T) { 1355 return T->getStmtClass() == UnaryTypeTraitExprClass; 1356 } 1357 static bool classof(const UnaryTypeTraitExpr *) { return true; } 1358 1359 // Iterators 1360 virtual child_iterator child_begin(); 1361 virtual child_iterator child_end(); 1362 1363 friend class PCHStmtReader; 1364}; 1365 1366/// \brief A reference to an overloaded function set, either an 1367/// \t UnresolvedLookupExpr or an \t UnresolvedMemberExpr. 1368class OverloadExpr : public Expr { 1369 /// The results. These are undesugared, which is to say, they may 1370 /// include UsingShadowDecls. Access is relative to the naming 1371 /// class. 1372 // FIXME: Allocate this data after the OverloadExpr subclass. 1373 DeclAccessPair *Results; 1374 unsigned NumResults; 1375 1376 /// The common name of these declarations. 1377 DeclarationName Name; 1378 1379 /// The scope specifier, if any. 1380 NestedNameSpecifier *Qualifier; 1381 1382 /// The source range of the scope specifier. 1383 SourceRange QualifierRange; 1384 1385 /// The location of the name. 1386 SourceLocation NameLoc; 1387 1388protected: 1389 /// True if the name was a template-id. 1390 bool HasExplicitTemplateArgs; 1391 1392 OverloadExpr(StmtClass K, ASTContext &C, QualType T, bool Dependent, 1393 NestedNameSpecifier *Qualifier, SourceRange QRange, 1394 DeclarationName Name, SourceLocation NameLoc, 1395 bool HasTemplateArgs, 1396 UnresolvedSetIterator Begin, UnresolvedSetIterator End); 1397 1398 OverloadExpr(StmtClass K, EmptyShell Empty) 1399 : Expr(K, Empty), Results(0), NumResults(0), 1400 Qualifier(0), HasExplicitTemplateArgs(false) { } 1401 1402public: 1403 /// Computes whether an unresolved lookup on the given declarations 1404 /// and optional template arguments is type- and value-dependent. 1405 static bool ComputeDependence(UnresolvedSetIterator Begin, 1406 UnresolvedSetIterator End, 1407 const TemplateArgumentListInfo *Args); 1408 1409 /// Finds the overloaded expression in the given expression of 1410 /// OverloadTy. 1411 /// 1412 /// \return the expression (which must be there) and true if it is 1413 /// within an address-of operator. 1414 static llvm::PointerIntPair<OverloadExpr*,1> find(Expr *E) { 1415 assert(E->getType()->isSpecificBuiltinType(BuiltinType::Overload)); 1416 1417 bool op = false; 1418 E = E->IgnoreParens(); 1419 if (isa<UnaryOperator>(E)) 1420 op = true, E = cast<UnaryOperator>(E)->getSubExpr()->IgnoreParens(); 1421 return llvm::PointerIntPair<OverloadExpr*,1>(cast<OverloadExpr>(E), op); 1422 } 1423 1424 /// Gets the naming class of this lookup, if any. 1425 CXXRecordDecl *getNamingClass() const; 1426 1427 typedef UnresolvedSetImpl::iterator decls_iterator; 1428 decls_iterator decls_begin() const { return UnresolvedSetIterator(Results); } 1429 decls_iterator decls_end() const { 1430 return UnresolvedSetIterator(Results + NumResults); 1431 } 1432 1433 void initializeResults(ASTContext &C, 1434 UnresolvedSetIterator Begin,UnresolvedSetIterator End); 1435 1436 /// Gets the number of declarations in the unresolved set. 1437 unsigned getNumDecls() const { return NumResults; } 1438 1439 /// Gets the name looked up. 1440 DeclarationName getName() const { return Name; } 1441 void setName(DeclarationName N) { Name = N; } 1442 1443 /// Gets the location of the name. 1444 SourceLocation getNameLoc() const { return NameLoc; } 1445 void setNameLoc(SourceLocation Loc) { NameLoc = Loc; } 1446 1447 /// Fetches the nested-name qualifier, if one was given. 1448 NestedNameSpecifier *getQualifier() const { return Qualifier; } 1449 void setQualifier(NestedNameSpecifier *NNS) { Qualifier = NNS; } 1450 1451 /// Fetches the range of the nested-name qualifier. 1452 SourceRange getQualifierRange() const { return QualifierRange; } 1453 void setQualifierRange(SourceRange R) { QualifierRange = R; } 1454 1455 /// \brief Determines whether this expression had an explicit 1456 /// template argument list, e.g. f<int>. 1457 bool hasExplicitTemplateArgs() const { return HasExplicitTemplateArgs; } 1458 1459 ExplicitTemplateArgumentList &getExplicitTemplateArgs(); // defined far below 1460 1461 const ExplicitTemplateArgumentList &getExplicitTemplateArgs() const { 1462 return const_cast<OverloadExpr*>(this)->getExplicitTemplateArgs(); 1463 } 1464 1465 ExplicitTemplateArgumentList *getOptionalExplicitTemplateArgs() { 1466 if (hasExplicitTemplateArgs()) 1467 return &getExplicitTemplateArgs(); 1468 return 0; 1469 } 1470 1471 static bool classof(const Stmt *T) { 1472 return T->getStmtClass() == UnresolvedLookupExprClass || 1473 T->getStmtClass() == UnresolvedMemberExprClass; 1474 } 1475 static bool classof(const OverloadExpr *) { return true; } 1476}; 1477 1478/// \brief A reference to a name which we were able to look up during 1479/// parsing but could not resolve to a specific declaration. This 1480/// arises in several ways: 1481/// * we might be waiting for argument-dependent lookup 1482/// * the name might resolve to an overloaded function 1483/// and eventually: 1484/// * the lookup might have included a function template 1485/// These never include UnresolvedUsingValueDecls, which are always 1486/// class members and therefore appear only in 1487/// UnresolvedMemberLookupExprs. 1488class UnresolvedLookupExpr : public OverloadExpr { 1489 /// True if these lookup results should be extended by 1490 /// argument-dependent lookup if this is the operand of a function 1491 /// call. 1492 bool RequiresADL; 1493 1494 /// True if these lookup results are overloaded. This is pretty 1495 /// trivially rederivable if we urgently need to kill this field. 1496 bool Overloaded; 1497 1498 /// The naming class (C++ [class.access.base]p5) of the lookup, if 1499 /// any. This can generally be recalculated from the context chain, 1500 /// but that can be fairly expensive for unqualified lookups. If we 1501 /// want to improve memory use here, this could go in a union 1502 /// against the qualified-lookup bits. 1503 CXXRecordDecl *NamingClass; 1504 1505 UnresolvedLookupExpr(ASTContext &C, QualType T, bool Dependent, 1506 CXXRecordDecl *NamingClass, 1507 NestedNameSpecifier *Qualifier, SourceRange QRange, 1508 DeclarationName Name, SourceLocation NameLoc, 1509 bool RequiresADL, bool Overloaded, bool HasTemplateArgs, 1510 UnresolvedSetIterator Begin, UnresolvedSetIterator End) 1511 : OverloadExpr(UnresolvedLookupExprClass, C, T, Dependent, Qualifier, 1512 QRange, Name, NameLoc, HasTemplateArgs, Begin, End), 1513 RequiresADL(RequiresADL), Overloaded(Overloaded), NamingClass(NamingClass) 1514 {} 1515 1516 UnresolvedLookupExpr(EmptyShell Empty) 1517 : OverloadExpr(UnresolvedLookupExprClass, Empty), 1518 RequiresADL(false), Overloaded(false), NamingClass(0) 1519 {} 1520 1521public: 1522 static UnresolvedLookupExpr *Create(ASTContext &C, 1523 bool Dependent, 1524 CXXRecordDecl *NamingClass, 1525 NestedNameSpecifier *Qualifier, 1526 SourceRange QualifierRange, 1527 DeclarationName Name, 1528 SourceLocation NameLoc, 1529 bool ADL, bool Overloaded, 1530 UnresolvedSetIterator Begin, 1531 UnresolvedSetIterator End) { 1532 return new(C) UnresolvedLookupExpr(C, 1533 Dependent ? C.DependentTy : C.OverloadTy, 1534 Dependent, NamingClass, 1535 Qualifier, QualifierRange, 1536 Name, NameLoc, ADL, Overloaded, false, 1537 Begin, End); 1538 } 1539 1540 static UnresolvedLookupExpr *Create(ASTContext &C, 1541 bool Dependent, 1542 CXXRecordDecl *NamingClass, 1543 NestedNameSpecifier *Qualifier, 1544 SourceRange QualifierRange, 1545 DeclarationName Name, 1546 SourceLocation NameLoc, 1547 bool ADL, 1548 const TemplateArgumentListInfo &Args, 1549 UnresolvedSetIterator Begin, 1550 UnresolvedSetIterator End); 1551 1552 static UnresolvedLookupExpr *CreateEmpty(ASTContext &C, 1553 unsigned NumTemplateArgs); 1554 1555 /// True if this declaration should be extended by 1556 /// argument-dependent lookup. 1557 bool requiresADL() const { return RequiresADL; } 1558 void setRequiresADL(bool V) { RequiresADL = V; } 1559 1560 /// True if this lookup is overloaded. 1561 bool isOverloaded() const { return Overloaded; } 1562 void setOverloaded(bool V) { Overloaded = V; } 1563 1564 /// Gets the 'naming class' (in the sense of C++0x 1565 /// [class.access.base]p5) of the lookup. This is the scope 1566 /// that was looked in to find these results. 1567 CXXRecordDecl *getNamingClass() const { return NamingClass; } 1568 void setNamingClass(CXXRecordDecl *D) { NamingClass = D; } 1569 1570 // Note that, inconsistently with the explicit-template-argument AST 1571 // nodes, users are *forbidden* from calling these methods on objects 1572 // without explicit template arguments. 1573 1574 ExplicitTemplateArgumentList &getExplicitTemplateArgs() { 1575 assert(hasExplicitTemplateArgs()); 1576 return *reinterpret_cast<ExplicitTemplateArgumentList*>(this + 1); 1577 } 1578 1579 /// Gets a reference to the explicit template argument list. 1580 const ExplicitTemplateArgumentList &getExplicitTemplateArgs() const { 1581 assert(hasExplicitTemplateArgs()); 1582 return *reinterpret_cast<const ExplicitTemplateArgumentList*>(this + 1); 1583 } 1584 1585 /// \brief Copies the template arguments (if present) into the given 1586 /// structure. 1587 void copyTemplateArgumentsInto(TemplateArgumentListInfo &List) const { 1588 getExplicitTemplateArgs().copyInto(List); 1589 } 1590 1591 SourceLocation getLAngleLoc() const { 1592 return getExplicitTemplateArgs().LAngleLoc; 1593 } 1594 1595 SourceLocation getRAngleLoc() const { 1596 return getExplicitTemplateArgs().RAngleLoc; 1597 } 1598 1599 TemplateArgumentLoc const *getTemplateArgs() const { 1600 return getExplicitTemplateArgs().getTemplateArgs(); 1601 } 1602 1603 unsigned getNumTemplateArgs() const { 1604 return getExplicitTemplateArgs().NumTemplateArgs; 1605 } 1606 1607 virtual SourceRange getSourceRange() const { 1608 SourceRange Range(getNameLoc()); 1609 if (getQualifier()) Range.setBegin(getQualifierRange().getBegin()); 1610 if (hasExplicitTemplateArgs()) Range.setEnd(getRAngleLoc()); 1611 return Range; 1612 } 1613 1614 virtual StmtIterator child_begin(); 1615 virtual StmtIterator child_end(); 1616 1617 static bool classof(const Stmt *T) { 1618 return T->getStmtClass() == UnresolvedLookupExprClass; 1619 } 1620 static bool classof(const UnresolvedLookupExpr *) { return true; } 1621}; 1622 1623/// \brief A qualified reference to a name whose declaration cannot 1624/// yet be resolved. 1625/// 1626/// DependentScopeDeclRefExpr is similar to DeclRefExpr in that 1627/// it expresses a reference to a declaration such as 1628/// X<T>::value. The difference, however, is that an 1629/// DependentScopeDeclRefExpr node is used only within C++ templates when 1630/// the qualification (e.g., X<T>::) refers to a dependent type. In 1631/// this case, X<T>::value cannot resolve to a declaration because the 1632/// declaration will differ from on instantiation of X<T> to the 1633/// next. Therefore, DependentScopeDeclRefExpr keeps track of the 1634/// qualifier (X<T>::) and the name of the entity being referenced 1635/// ("value"). Such expressions will instantiate to a DeclRefExpr once the 1636/// declaration can be found. 1637class DependentScopeDeclRefExpr : public Expr { 1638 /// The name of the entity we will be referencing. 1639 DeclarationName Name; 1640 1641 /// Location of the name of the declaration we're referencing. 1642 SourceLocation Loc; 1643 1644 /// QualifierRange - The source range that covers the 1645 /// nested-name-specifier. 1646 SourceRange QualifierRange; 1647 1648 /// \brief The nested-name-specifier that qualifies this unresolved 1649 /// declaration name. 1650 NestedNameSpecifier *Qualifier; 1651 1652 /// \brief Whether the name includes explicit template arguments. 1653 bool HasExplicitTemplateArgs; 1654 1655 DependentScopeDeclRefExpr(QualType T, 1656 NestedNameSpecifier *Qualifier, 1657 SourceRange QualifierRange, 1658 DeclarationName Name, 1659 SourceLocation NameLoc, 1660 bool HasExplicitTemplateArgs) 1661 : Expr(DependentScopeDeclRefExprClass, T, true, true), 1662 Name(Name), Loc(NameLoc), 1663 QualifierRange(QualifierRange), Qualifier(Qualifier), 1664 HasExplicitTemplateArgs(HasExplicitTemplateArgs) 1665 {} 1666 1667public: 1668 static DependentScopeDeclRefExpr *Create(ASTContext &C, 1669 NestedNameSpecifier *Qualifier, 1670 SourceRange QualifierRange, 1671 DeclarationName Name, 1672 SourceLocation NameLoc, 1673 const TemplateArgumentListInfo *TemplateArgs = 0); 1674 1675 static DependentScopeDeclRefExpr *CreateEmpty(ASTContext &C, 1676 unsigned NumTemplateArgs); 1677 1678 /// \brief Retrieve the name that this expression refers to. 1679 DeclarationName getDeclName() const { return Name; } 1680 void setDeclName(DeclarationName N) { Name = N; } 1681 1682 /// \brief Retrieve the location of the name within the expression. 1683 SourceLocation getLocation() const { return Loc; } 1684 void setLocation(SourceLocation L) { Loc = L; } 1685 1686 /// \brief Retrieve the source range of the nested-name-specifier. 1687 SourceRange getQualifierRange() const { return QualifierRange; } 1688 void setQualifierRange(SourceRange R) { QualifierRange = R; } 1689 1690 /// \brief Retrieve the nested-name-specifier that qualifies this 1691 /// declaration. 1692 NestedNameSpecifier *getQualifier() const { return Qualifier; } 1693 void setQualifier(NestedNameSpecifier *NNS) { Qualifier = NNS; } 1694 1695 /// Determines whether this lookup had explicit template arguments. 1696 bool hasExplicitTemplateArgs() const { return HasExplicitTemplateArgs; } 1697 1698 // Note that, inconsistently with the explicit-template-argument AST 1699 // nodes, users are *forbidden* from calling these methods on objects 1700 // without explicit template arguments. 1701 1702 ExplicitTemplateArgumentList &getExplicitTemplateArgs() { 1703 assert(hasExplicitTemplateArgs()); 1704 return *reinterpret_cast<ExplicitTemplateArgumentList*>(this + 1); 1705 } 1706 1707 /// Gets a reference to the explicit template argument list. 1708 const ExplicitTemplateArgumentList &getExplicitTemplateArgs() const { 1709 assert(hasExplicitTemplateArgs()); 1710 return *reinterpret_cast<const ExplicitTemplateArgumentList*>(this + 1); 1711 } 1712 1713 /// \brief Copies the template arguments (if present) into the given 1714 /// structure. 1715 void copyTemplateArgumentsInto(TemplateArgumentListInfo &List) const { 1716 getExplicitTemplateArgs().copyInto(List); 1717 } 1718 1719 SourceLocation getLAngleLoc() const { 1720 return getExplicitTemplateArgs().LAngleLoc; 1721 } 1722 1723 SourceLocation getRAngleLoc() const { 1724 return getExplicitTemplateArgs().RAngleLoc; 1725 } 1726 1727 TemplateArgumentLoc const *getTemplateArgs() const { 1728 return getExplicitTemplateArgs().getTemplateArgs(); 1729 } 1730 1731 unsigned getNumTemplateArgs() const { 1732 return getExplicitTemplateArgs().NumTemplateArgs; 1733 } 1734 1735 virtual SourceRange getSourceRange() const { 1736 SourceRange Range(QualifierRange.getBegin(), getLocation()); 1737 if (hasExplicitTemplateArgs()) 1738 Range.setEnd(getRAngleLoc()); 1739 return Range; 1740 } 1741 1742 static bool classof(const Stmt *T) { 1743 return T->getStmtClass() == DependentScopeDeclRefExprClass; 1744 } 1745 static bool classof(const DependentScopeDeclRefExpr *) { return true; } 1746 1747 virtual StmtIterator child_begin(); 1748 virtual StmtIterator child_end(); 1749}; 1750 1751class CXXExprWithTemporaries : public Expr { 1752 Stmt *SubExpr; 1753 1754 CXXTemporary **Temps; 1755 unsigned NumTemps; 1756 1757 CXXExprWithTemporaries(ASTContext &C, Expr *SubExpr, CXXTemporary **Temps, 1758 unsigned NumTemps); 1759 1760public: 1761 CXXExprWithTemporaries(EmptyShell Empty) 1762 : Expr(CXXExprWithTemporariesClass, Empty), 1763 SubExpr(0), Temps(0), NumTemps(0) {} 1764 1765 static CXXExprWithTemporaries *Create(ASTContext &C, Expr *SubExpr, 1766 CXXTemporary **Temps, 1767 unsigned NumTemps); 1768 1769 unsigned getNumTemporaries() const { return NumTemps; } 1770 void setNumTemporaries(ASTContext &C, unsigned N); 1771 1772 CXXTemporary *getTemporary(unsigned i) { 1773 assert(i < NumTemps && "Index out of range"); 1774 return Temps[i]; 1775 } 1776 const CXXTemporary *getTemporary(unsigned i) const { 1777 return const_cast<CXXExprWithTemporaries*>(this)->getTemporary(i); 1778 } 1779 void setTemporary(unsigned i, CXXTemporary *T) { 1780 assert(i < NumTemps && "Index out of range"); 1781 Temps[i] = T; 1782 } 1783 1784 Expr *getSubExpr() { return cast<Expr>(SubExpr); } 1785 const Expr *getSubExpr() const { return cast<Expr>(SubExpr); } 1786 void setSubExpr(Expr *E) { SubExpr = E; } 1787 1788 virtual SourceRange getSourceRange() const { 1789 return SubExpr->getSourceRange(); 1790 } 1791 1792 // Implement isa/cast/dyncast/etc. 1793 static bool classof(const Stmt *T) { 1794 return T->getStmtClass() == CXXExprWithTemporariesClass; 1795 } 1796 static bool classof(const CXXExprWithTemporaries *) { return true; } 1797 1798 // Iterators 1799 virtual child_iterator child_begin(); 1800 virtual child_iterator child_end(); 1801}; 1802 1803/// \brief Describes an explicit type conversion that uses functional 1804/// notion but could not be resolved because one or more arguments are 1805/// type-dependent. 1806/// 1807/// The explicit type conversions expressed by 1808/// CXXUnresolvedConstructExpr have the form \c T(a1, a2, ..., aN), 1809/// where \c T is some type and \c a1, a2, ..., aN are values, and 1810/// either \C T is a dependent type or one or more of the \c a's is 1811/// type-dependent. For example, this would occur in a template such 1812/// as: 1813/// 1814/// \code 1815/// template<typename T, typename A1> 1816/// inline T make_a(const A1& a1) { 1817/// return T(a1); 1818/// } 1819/// \endcode 1820/// 1821/// When the returned expression is instantiated, it may resolve to a 1822/// constructor call, conversion function call, or some kind of type 1823/// conversion. 1824class CXXUnresolvedConstructExpr : public Expr { 1825 /// \brief The starting location of the type 1826 SourceLocation TyBeginLoc; 1827 1828 /// \brief The type being constructed. 1829 QualType Type; 1830 1831 /// \brief The location of the left parentheses ('('). 1832 SourceLocation LParenLoc; 1833 1834 /// \brief The location of the right parentheses (')'). 1835 SourceLocation RParenLoc; 1836 1837 /// \brief The number of arguments used to construct the type. 1838 unsigned NumArgs; 1839 1840 CXXUnresolvedConstructExpr(SourceLocation TyBegin, 1841 QualType T, 1842 SourceLocation LParenLoc, 1843 Expr **Args, 1844 unsigned NumArgs, 1845 SourceLocation RParenLoc); 1846 1847 CXXUnresolvedConstructExpr(EmptyShell Empty, unsigned NumArgs) 1848 : Expr(CXXUnresolvedConstructExprClass, Empty), NumArgs(NumArgs) { } 1849 1850public: 1851 static CXXUnresolvedConstructExpr *Create(ASTContext &C, 1852 SourceLocation TyBegin, 1853 QualType T, 1854 SourceLocation LParenLoc, 1855 Expr **Args, 1856 unsigned NumArgs, 1857 SourceLocation RParenLoc); 1858 1859 static CXXUnresolvedConstructExpr *CreateEmpty(ASTContext &C, 1860 unsigned NumArgs); 1861 1862 /// \brief Retrieve the source location where the type begins. 1863 SourceLocation getTypeBeginLoc() const { return TyBeginLoc; } 1864 void setTypeBeginLoc(SourceLocation L) { TyBeginLoc = L; } 1865 1866 /// \brief Retrieve the type that is being constructed, as specified 1867 /// in the source code. 1868 QualType getTypeAsWritten() const { return Type; } 1869 void setTypeAsWritten(QualType T) { Type = T; } 1870 1871 /// \brief Retrieve the location of the left parentheses ('(') that 1872 /// precedes the argument list. 1873 SourceLocation getLParenLoc() const { return LParenLoc; } 1874 void setLParenLoc(SourceLocation L) { LParenLoc = L; } 1875 1876 /// \brief Retrieve the location of the right parentheses (')') that 1877 /// follows the argument list. 1878 SourceLocation getRParenLoc() const { return RParenLoc; } 1879 void setRParenLoc(SourceLocation L) { RParenLoc = L; } 1880 1881 /// \brief Retrieve the number of arguments. 1882 unsigned arg_size() const { return NumArgs; } 1883 1884 typedef Expr** arg_iterator; 1885 arg_iterator arg_begin() { return reinterpret_cast<Expr**>(this + 1); } 1886 arg_iterator arg_end() { return arg_begin() + NumArgs; } 1887 1888 typedef const Expr* const * const_arg_iterator; 1889 const_arg_iterator arg_begin() const { 1890 return reinterpret_cast<const Expr* const *>(this + 1); 1891 } 1892 const_arg_iterator arg_end() const { 1893 return arg_begin() + NumArgs; 1894 } 1895 1896 Expr *getArg(unsigned I) { 1897 assert(I < NumArgs && "Argument index out-of-range"); 1898 return *(arg_begin() + I); 1899 } 1900 1901 const Expr *getArg(unsigned I) const { 1902 assert(I < NumArgs && "Argument index out-of-range"); 1903 return *(arg_begin() + I); 1904 } 1905 1906 void setArg(unsigned I, Expr *E) { 1907 assert(I < NumArgs && "Argument index out-of-range"); 1908 *(arg_begin() + I) = E; 1909 } 1910 1911 virtual SourceRange getSourceRange() const { 1912 return SourceRange(TyBeginLoc, RParenLoc); 1913 } 1914 static bool classof(const Stmt *T) { 1915 return T->getStmtClass() == CXXUnresolvedConstructExprClass; 1916 } 1917 static bool classof(const CXXUnresolvedConstructExpr *) { return true; } 1918 1919 // Iterators 1920 virtual child_iterator child_begin(); 1921 virtual child_iterator child_end(); 1922}; 1923 1924/// \brief Represents a C++ member access expression where the actual 1925/// member referenced could not be resolved because the base 1926/// expression or the member name was dependent. 1927/// 1928/// Like UnresolvedMemberExprs, these can be either implicit or 1929/// explicit accesses. It is only possible to get one of these with 1930/// an implicit access if a qualifier is provided. 1931class CXXDependentScopeMemberExpr : public Expr { 1932 /// \brief The expression for the base pointer or class reference, 1933 /// e.g., the \c x in x.f. Can be null in implicit accesses. 1934 Stmt *Base; 1935 1936 /// \brief The type of the base expression. Never null, even for 1937 /// implicit accesses. 1938 QualType BaseType; 1939 1940 /// \brief Whether this member expression used the '->' operator or 1941 /// the '.' operator. 1942 bool IsArrow : 1; 1943 1944 /// \brief Whether this member expression has explicitly-specified template 1945 /// arguments. 1946 bool HasExplicitTemplateArgs : 1; 1947 1948 /// \brief The location of the '->' or '.' operator. 1949 SourceLocation OperatorLoc; 1950 1951 /// \brief The nested-name-specifier that precedes the member name, if any. 1952 NestedNameSpecifier *Qualifier; 1953 1954 /// \brief The source range covering the nested name specifier. 1955 SourceRange QualifierRange; 1956 1957 /// \brief In a qualified member access expression such as t->Base::f, this 1958 /// member stores the resolves of name lookup in the context of the member 1959 /// access expression, to be used at instantiation time. 1960 /// 1961 /// FIXME: This member, along with the Qualifier and QualifierRange, could 1962 /// be stuck into a structure that is optionally allocated at the end of 1963 /// the CXXDependentScopeMemberExpr, to save space in the common case. 1964 NamedDecl *FirstQualifierFoundInScope; 1965 1966 /// \brief The member to which this member expression refers, which 1967 /// can be name, overloaded operator, or destructor. 1968 /// FIXME: could also be a template-id 1969 DeclarationName Member; 1970 1971 /// \brief The location of the member name. 1972 SourceLocation MemberLoc; 1973 1974 CXXDependentScopeMemberExpr(ASTContext &C, 1975 Expr *Base, QualType BaseType, bool IsArrow, 1976 SourceLocation OperatorLoc, 1977 NestedNameSpecifier *Qualifier, 1978 SourceRange QualifierRange, 1979 NamedDecl *FirstQualifierFoundInScope, 1980 DeclarationName Member, 1981 SourceLocation MemberLoc, 1982 const TemplateArgumentListInfo *TemplateArgs); 1983 1984public: 1985 CXXDependentScopeMemberExpr(ASTContext &C, 1986 Expr *Base, QualType BaseType, 1987 bool IsArrow, 1988 SourceLocation OperatorLoc, 1989 NestedNameSpecifier *Qualifier, 1990 SourceRange QualifierRange, 1991 NamedDecl *FirstQualifierFoundInScope, 1992 DeclarationName Member, 1993 SourceLocation MemberLoc) 1994 : Expr(CXXDependentScopeMemberExprClass, C.DependentTy, true, true), 1995 Base(Base), BaseType(BaseType), IsArrow(IsArrow), 1996 HasExplicitTemplateArgs(false), OperatorLoc(OperatorLoc), 1997 Qualifier(Qualifier), QualifierRange(QualifierRange), 1998 FirstQualifierFoundInScope(FirstQualifierFoundInScope), 1999 Member(Member), MemberLoc(MemberLoc) { } 2000 2001 static CXXDependentScopeMemberExpr * 2002 Create(ASTContext &C, 2003 Expr *Base, QualType BaseType, bool IsArrow, 2004 SourceLocation OperatorLoc, 2005 NestedNameSpecifier *Qualifier, 2006 SourceRange QualifierRange, 2007 NamedDecl *FirstQualifierFoundInScope, 2008 DeclarationName Member, 2009 SourceLocation MemberLoc, 2010 const TemplateArgumentListInfo *TemplateArgs); 2011 2012 static CXXDependentScopeMemberExpr * 2013 CreateEmpty(ASTContext &C, unsigned NumTemplateArgs); 2014 2015 /// \brief True if this is an implicit access, i.e. one in which the 2016 /// member being accessed was not written in the source. The source 2017 /// location of the operator is invalid in this case. 2018 bool isImplicitAccess() const { return Base == 0; } 2019 2020 /// \brief Retrieve the base object of this member expressions, 2021 /// e.g., the \c x in \c x.m. 2022 Expr *getBase() const { 2023 assert(!isImplicitAccess()); 2024 return cast<Expr>(Base); 2025 } 2026 void setBase(Expr *E) { Base = E; } 2027 2028 QualType getBaseType() const { return BaseType; } 2029 void setBaseType(QualType T) { BaseType = T; } 2030 2031 /// \brief Determine whether this member expression used the '->' 2032 /// operator; otherwise, it used the '.' operator. 2033 bool isArrow() const { return IsArrow; } 2034 void setArrow(bool A) { IsArrow = A; } 2035 2036 /// \brief Retrieve the location of the '->' or '.' operator. 2037 SourceLocation getOperatorLoc() const { return OperatorLoc; } 2038 void setOperatorLoc(SourceLocation L) { OperatorLoc = L; } 2039 2040 /// \brief Retrieve the nested-name-specifier that qualifies the member 2041 /// name. 2042 NestedNameSpecifier *getQualifier() const { return Qualifier; } 2043 void setQualifier(NestedNameSpecifier *NNS) { Qualifier = NNS; } 2044 2045 /// \brief Retrieve the source range covering the nested-name-specifier 2046 /// that qualifies the member name. 2047 SourceRange getQualifierRange() const { return QualifierRange; } 2048 void setQualifierRange(SourceRange R) { QualifierRange = R; } 2049 2050 /// \brief Retrieve the first part of the nested-name-specifier that was 2051 /// found in the scope of the member access expression when the member access 2052 /// was initially parsed. 2053 /// 2054 /// This function only returns a useful result when member access expression 2055 /// uses a qualified member name, e.g., "x.Base::f". Here, the declaration 2056 /// returned by this function describes what was found by unqualified name 2057 /// lookup for the identifier "Base" within the scope of the member access 2058 /// expression itself. At template instantiation time, this information is 2059 /// combined with the results of name lookup into the type of the object 2060 /// expression itself (the class type of x). 2061 NamedDecl *getFirstQualifierFoundInScope() const { 2062 return FirstQualifierFoundInScope; 2063 } 2064 void setFirstQualifierFoundInScope(NamedDecl *D) { 2065 FirstQualifierFoundInScope = D; 2066 } 2067 2068 /// \brief Retrieve the name of the member that this expression 2069 /// refers to. 2070 DeclarationName getMember() const { return Member; } 2071 void setMember(DeclarationName N) { Member = N; } 2072 2073 // \brief Retrieve the location of the name of the member that this 2074 // expression refers to. 2075 SourceLocation getMemberLoc() const { return MemberLoc; } 2076 void setMemberLoc(SourceLocation L) { MemberLoc = L; } 2077 2078 /// \brief Determines whether this member expression actually had a C++ 2079 /// template argument list explicitly specified, e.g., x.f<int>. 2080 bool hasExplicitTemplateArgs() const { 2081 return HasExplicitTemplateArgs; 2082 } 2083 2084 /// \brief Retrieve the explicit template argument list that followed the 2085 /// member template name, if any. 2086 ExplicitTemplateArgumentList *getExplicitTemplateArgumentList() { 2087 assert(HasExplicitTemplateArgs); 2088 return reinterpret_cast<ExplicitTemplateArgumentList *>(this + 1); 2089 } 2090 2091 /// \brief Retrieve the explicit template argument list that followed the 2092 /// member template name, if any. 2093 const ExplicitTemplateArgumentList *getExplicitTemplateArgumentList() const { 2094 return const_cast<CXXDependentScopeMemberExpr *>(this) 2095 ->getExplicitTemplateArgumentList(); 2096 } 2097 2098 /// \brief Copies the template arguments (if present) into the given 2099 /// structure. 2100 void copyTemplateArgumentsInto(TemplateArgumentListInfo &List) const { 2101 assert(HasExplicitTemplateArgs); 2102 getExplicitTemplateArgumentList()->copyInto(List); 2103 } 2104 2105 /// \brief Initializes the template arguments using the given structure. 2106 void initializeTemplateArgumentsFrom(const TemplateArgumentListInfo &List) { 2107 assert(HasExplicitTemplateArgs); 2108 getExplicitTemplateArgumentList()->initializeFrom(List); 2109 } 2110 2111 /// \brief Retrieve the location of the left angle bracket following the 2112 /// member name ('<'), if any. 2113 SourceLocation getLAngleLoc() const { 2114 assert(HasExplicitTemplateArgs); 2115 return getExplicitTemplateArgumentList()->LAngleLoc; 2116 } 2117 2118 /// \brief Retrieve the template arguments provided as part of this 2119 /// template-id. 2120 const TemplateArgumentLoc *getTemplateArgs() const { 2121 assert(HasExplicitTemplateArgs); 2122 return getExplicitTemplateArgumentList()->getTemplateArgs(); 2123 } 2124 2125 /// \brief Retrieve the number of template arguments provided as part of this 2126 /// template-id. 2127 unsigned getNumTemplateArgs() const { 2128 assert(HasExplicitTemplateArgs); 2129 return getExplicitTemplateArgumentList()->NumTemplateArgs; 2130 } 2131 2132 /// \brief Retrieve the location of the right angle bracket following the 2133 /// template arguments ('>'). 2134 SourceLocation getRAngleLoc() const { 2135 assert(HasExplicitTemplateArgs); 2136 return getExplicitTemplateArgumentList()->RAngleLoc; 2137 } 2138 2139 virtual SourceRange getSourceRange() const { 2140 SourceRange Range; 2141 if (!isImplicitAccess()) 2142 Range.setBegin(Base->getSourceRange().getBegin()); 2143 else if (getQualifier()) 2144 Range.setBegin(getQualifierRange().getBegin()); 2145 else 2146 Range.setBegin(MemberLoc); 2147 2148 if (hasExplicitTemplateArgs()) 2149 Range.setEnd(getRAngleLoc()); 2150 else 2151 Range.setEnd(MemberLoc); 2152 return Range; 2153 } 2154 2155 static bool classof(const Stmt *T) { 2156 return T->getStmtClass() == CXXDependentScopeMemberExprClass; 2157 } 2158 static bool classof(const CXXDependentScopeMemberExpr *) { return true; } 2159 2160 // Iterators 2161 virtual child_iterator child_begin(); 2162 virtual child_iterator child_end(); 2163}; 2164 2165/// \brief Represents a C++ member access expression for which lookup 2166/// produced a set of overloaded functions. 2167/// 2168/// The member access may be explicit or implicit: 2169/// struct A { 2170/// int a, b; 2171/// int explicitAccess() { return this->a + this->A::b; } 2172/// int implicitAccess() { return a + A::b; } 2173/// }; 2174/// 2175/// In the final AST, an explicit access always becomes a MemberExpr. 2176/// An implicit access may become either a MemberExpr or a 2177/// DeclRefExpr, depending on whether the member is static. 2178class UnresolvedMemberExpr : public OverloadExpr { 2179 /// \brief Whether this member expression used the '->' operator or 2180 /// the '.' operator. 2181 bool IsArrow : 1; 2182 2183 /// \brief Whether the lookup results contain an unresolved using 2184 /// declaration. 2185 bool HasUnresolvedUsing : 1; 2186 2187 /// \brief The expression for the base pointer or class reference, 2188 /// e.g., the \c x in x.f. This can be null if this is an 'unbased' 2189 /// member expression 2190 Stmt *Base; 2191 2192 /// \brief The type of the base expression; never null. 2193 QualType BaseType; 2194 2195 /// \brief The location of the '->' or '.' operator. 2196 SourceLocation OperatorLoc; 2197 2198 UnresolvedMemberExpr(ASTContext &C, QualType T, bool Dependent, 2199 bool HasUnresolvedUsing, 2200 Expr *Base, QualType BaseType, bool IsArrow, 2201 SourceLocation OperatorLoc, 2202 NestedNameSpecifier *Qualifier, 2203 SourceRange QualifierRange, 2204 DeclarationName Member, 2205 SourceLocation MemberLoc, 2206 const TemplateArgumentListInfo *TemplateArgs, 2207 UnresolvedSetIterator Begin, UnresolvedSetIterator End); 2208 2209 UnresolvedMemberExpr(EmptyShell Empty) 2210 : OverloadExpr(UnresolvedMemberExprClass, Empty), IsArrow(false), 2211 HasUnresolvedUsing(false), Base(0) { } 2212 2213public: 2214 static UnresolvedMemberExpr * 2215 Create(ASTContext &C, bool Dependent, bool HasUnresolvedUsing, 2216 Expr *Base, QualType BaseType, bool IsArrow, 2217 SourceLocation OperatorLoc, 2218 NestedNameSpecifier *Qualifier, 2219 SourceRange QualifierRange, 2220 DeclarationName Member, 2221 SourceLocation MemberLoc, 2222 const TemplateArgumentListInfo *TemplateArgs, 2223 UnresolvedSetIterator Begin, UnresolvedSetIterator End); 2224 2225 static UnresolvedMemberExpr * 2226 CreateEmpty(ASTContext &C, unsigned NumTemplateArgs); 2227 2228 /// \brief True if this is an implicit access, i.e. one in which the 2229 /// member being accessed was not written in the source. The source 2230 /// location of the operator is invalid in this case. 2231 bool isImplicitAccess() const { return Base == 0; } 2232 2233 /// \brief Retrieve the base object of this member expressions, 2234 /// e.g., the \c x in \c x.m. 2235 Expr *getBase() { 2236 assert(!isImplicitAccess()); 2237 return cast<Expr>(Base); 2238 } 2239 const Expr *getBase() const { 2240 assert(!isImplicitAccess()); 2241 return cast<Expr>(Base); 2242 } 2243 void setBase(Expr *E) { Base = E; } 2244 2245 QualType getBaseType() const { return BaseType; } 2246 void setBaseType(QualType T) { BaseType = T; } 2247 2248 /// \brief Determine whether the lookup results contain an unresolved using 2249 /// declaration. 2250 bool hasUnresolvedUsing() const { return HasUnresolvedUsing; } 2251 void setHasUnresolvedUsing(bool V) { HasUnresolvedUsing = V; } 2252 2253 /// \brief Determine whether this member expression used the '->' 2254 /// operator; otherwise, it used the '.' operator. 2255 bool isArrow() const { return IsArrow; } 2256 void setArrow(bool A) { IsArrow = A; } 2257 2258 /// \brief Retrieve the location of the '->' or '.' operator. 2259 SourceLocation getOperatorLoc() const { return OperatorLoc; } 2260 void setOperatorLoc(SourceLocation L) { OperatorLoc = L; } 2261 2262 /// \brief Retrieves the naming class of this lookup. 2263 CXXRecordDecl *getNamingClass() const; 2264 2265 /// \brief Retrieve the name of the member that this expression 2266 /// refers to. 2267 DeclarationName getMemberName() const { return getName(); } 2268 void setMemberName(DeclarationName N) { setName(N); } 2269 2270 // \brief Retrieve the location of the name of the member that this 2271 // expression refers to. 2272 SourceLocation getMemberLoc() const { return getNameLoc(); } 2273 void setMemberLoc(SourceLocation L) { setNameLoc(L); } 2274 2275 /// \brief Retrieve the explicit template argument list that followed the 2276 /// member template name. 2277 ExplicitTemplateArgumentList &getExplicitTemplateArgs() { 2278 assert(hasExplicitTemplateArgs()); 2279 return *reinterpret_cast<ExplicitTemplateArgumentList *>(this + 1); 2280 } 2281 2282 /// \brief Retrieve the explicit template argument list that followed the 2283 /// member template name, if any. 2284 const ExplicitTemplateArgumentList &getExplicitTemplateArgs() const { 2285 assert(hasExplicitTemplateArgs()); 2286 return *reinterpret_cast<const ExplicitTemplateArgumentList *>(this + 1); 2287 } 2288 2289 /// \brief Copies the template arguments into the given structure. 2290 void copyTemplateArgumentsInto(TemplateArgumentListInfo &List) const { 2291 getExplicitTemplateArgs().copyInto(List); 2292 } 2293 2294 /// \brief Retrieve the location of the left angle bracket following 2295 /// the member name ('<'). 2296 SourceLocation getLAngleLoc() const { 2297 return getExplicitTemplateArgs().LAngleLoc; 2298 } 2299 2300 /// \brief Retrieve the template arguments provided as part of this 2301 /// template-id. 2302 const TemplateArgumentLoc *getTemplateArgs() const { 2303 return getExplicitTemplateArgs().getTemplateArgs(); 2304 } 2305 2306 /// \brief Retrieve the number of template arguments provided as 2307 /// part of this template-id. 2308 unsigned getNumTemplateArgs() const { 2309 return getExplicitTemplateArgs().NumTemplateArgs; 2310 } 2311 2312 /// \brief Retrieve the location of the right angle bracket 2313 /// following the template arguments ('>'). 2314 SourceLocation getRAngleLoc() const { 2315 return getExplicitTemplateArgs().RAngleLoc; 2316 } 2317 2318 virtual SourceRange getSourceRange() const { 2319 SourceRange Range; 2320 if (!isImplicitAccess()) 2321 Range.setBegin(Base->getSourceRange().getBegin()); 2322 else if (getQualifier()) 2323 Range.setBegin(getQualifierRange().getBegin()); 2324 else 2325 Range.setBegin(getMemberLoc()); 2326 2327 if (hasExplicitTemplateArgs()) 2328 Range.setEnd(getRAngleLoc()); 2329 else 2330 Range.setEnd(getMemberLoc()); 2331 return Range; 2332 } 2333 2334 static bool classof(const Stmt *T) { 2335 return T->getStmtClass() == UnresolvedMemberExprClass; 2336 } 2337 static bool classof(const UnresolvedMemberExpr *) { return true; } 2338 2339 // Iterators 2340 virtual child_iterator child_begin(); 2341 virtual child_iterator child_end(); 2342}; 2343 2344inline ExplicitTemplateArgumentList &OverloadExpr::getExplicitTemplateArgs() { 2345 if (isa<UnresolvedLookupExpr>(this)) 2346 return cast<UnresolvedLookupExpr>(this)->getExplicitTemplateArgs(); 2347 else 2348 return cast<UnresolvedMemberExpr>(this)->getExplicitTemplateArgs(); 2349} 2350 2351} // end namespace clang 2352 2353#endif 2354