ExprCXX.h revision ff331c15729f7d4439d253c97f4d60f2a7ffd0c6
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 ~CXXTemporary() { } 547 548public: 549 static CXXTemporary *Create(ASTContext &C, 550 const CXXDestructorDecl *Destructor); 551 552 const CXXDestructorDecl *getDestructor() const { return Destructor; } 553}; 554 555/// \brief Represents binding an expression to a temporary. 556/// 557/// This ensures the destructor is called for the temporary. It should only be 558/// needed for non-POD, non-trivially destructable class types. For example: 559/// 560/// \code 561/// struct S { 562/// S() { } // User defined constructor makes S non-POD. 563/// ~S() { } // User defined destructor makes it non-trivial. 564/// }; 565/// void test() { 566/// const S &s_ref = S(); // Requires a CXXBindTemporaryExpr. 567/// } 568/// \endcode 569class CXXBindTemporaryExpr : public Expr { 570 CXXTemporary *Temp; 571 572 Stmt *SubExpr; 573 574 CXXBindTemporaryExpr(CXXTemporary *temp, Expr* subexpr) 575 : Expr(CXXBindTemporaryExprClass, subexpr->getType(), false, false), 576 Temp(temp), SubExpr(subexpr) { } 577 ~CXXBindTemporaryExpr() { } 578 579public: 580 CXXBindTemporaryExpr(EmptyShell Empty) 581 : Expr(CXXBindTemporaryExprClass, Empty), Temp(0), SubExpr(0) {} 582 583 static CXXBindTemporaryExpr *Create(ASTContext &C, CXXTemporary *Temp, 584 Expr* SubExpr); 585 586 CXXTemporary *getTemporary() { return Temp; } 587 const CXXTemporary *getTemporary() const { return Temp; } 588 void setTemporary(CXXTemporary *T) { Temp = T; } 589 590 const Expr *getSubExpr() const { return cast<Expr>(SubExpr); } 591 Expr *getSubExpr() { return cast<Expr>(SubExpr); } 592 void setSubExpr(Expr *E) { SubExpr = E; } 593 594 virtual SourceRange getSourceRange() const { 595 return SubExpr->getSourceRange(); 596 } 597 598 // Implement isa/cast/dyncast/etc. 599 static bool classof(const Stmt *T) { 600 return T->getStmtClass() == CXXBindTemporaryExprClass; 601 } 602 static bool classof(const CXXBindTemporaryExpr *) { return true; } 603 604 // Iterators 605 virtual child_iterator child_begin(); 606 virtual child_iterator child_end(); 607}; 608 609/// CXXBindReferenceExpr - Represents binding an expression to a reference. 610/// In the example: 611/// 612/// const int &i = 10; 613/// 614/// a bind reference expression is inserted to indicate that 10 is bound to 615/// a reference, and that a temporary needs to be created to hold the 616/// value. 617class CXXBindReferenceExpr : public Expr { 618 // SubExpr - The expression being bound. 619 Stmt *SubExpr; 620 621 // ExtendsLifetime - Whether binding this reference extends the lifetime of 622 // the expression being bound. FIXME: Add C++ reference. 623 bool ExtendsLifetime; 624 625 /// RequiresTemporaryCopy - Whether binding the subexpression requires a 626 /// temporary copy. 627 bool RequiresTemporaryCopy; 628 629 CXXBindReferenceExpr(Expr *subexpr, bool ExtendsLifetime, 630 bool RequiresTemporaryCopy) 631 : Expr(CXXBindReferenceExprClass, subexpr->getType(), false, false), 632 SubExpr(subexpr), ExtendsLifetime(ExtendsLifetime), 633 RequiresTemporaryCopy(RequiresTemporaryCopy) { } 634 ~CXXBindReferenceExpr() { } 635 636public: 637 static CXXBindReferenceExpr *Create(ASTContext &C, Expr *SubExpr, 638 bool ExtendsLifetime, 639 bool RequiresTemporaryCopy); 640 641 explicit CXXBindReferenceExpr(EmptyShell Empty) 642 : Expr(CXXBindReferenceExprClass, Empty) { } 643 644 const Expr *getSubExpr() const { return cast<Expr>(SubExpr); } 645 Expr *getSubExpr() { return cast<Expr>(SubExpr); } 646 void setSubExpr(Expr *E) { SubExpr = E; } 647 648 virtual SourceRange getSourceRange() const { 649 return SubExpr->getSourceRange(); 650 } 651 652 /// requiresTemporaryCopy - Whether binding the subexpression requires a 653 /// temporary copy. 654 bool requiresTemporaryCopy() const { return RequiresTemporaryCopy; } 655 656 // extendsLifetime - Whether binding this reference extends the lifetime of 657 // the expression being bound. FIXME: Add C++ reference. 658 bool extendsLifetime() const { return ExtendsLifetime; } 659 660 // Implement isa/cast/dyncast/etc. 661 static bool classof(const Stmt *T) { 662 return T->getStmtClass() == CXXBindReferenceExprClass; 663 } 664 static bool classof(const CXXBindReferenceExpr *) { return true; } 665 666 // Iterators 667 virtual child_iterator child_begin(); 668 virtual child_iterator child_end(); 669 670 friend class PCHStmtReader; 671}; 672 673/// CXXConstructExpr - Represents a call to a C++ constructor. 674class CXXConstructExpr : public Expr { 675public: 676 enum ConstructionKind { 677 CK_Complete, 678 CK_NonVirtualBase, 679 CK_VirtualBase 680 }; 681 682private: 683 CXXConstructorDecl *Constructor; 684 685 SourceLocation Loc; 686 bool Elidable : 1; 687 bool ZeroInitialization : 1; 688 unsigned ConstructKind : 2; 689 Stmt **Args; 690 unsigned NumArgs; 691 692protected: 693 CXXConstructExpr(ASTContext &C, StmtClass SC, QualType T, 694 SourceLocation Loc, 695 CXXConstructorDecl *d, bool elidable, 696 Expr **args, unsigned numargs, 697 bool ZeroInitialization = false, 698 ConstructionKind ConstructKind = CK_Complete); 699 ~CXXConstructExpr() { } 700 701 /// \brief Construct an empty C++ construction expression. 702 CXXConstructExpr(StmtClass SC, EmptyShell Empty) 703 : Expr(SC, Empty), Constructor(0), Elidable(0), ZeroInitialization(0), 704 ConstructKind(0), Args(0), NumArgs(0) { } 705 706public: 707 /// \brief Construct an empty C++ construction expression. 708 explicit CXXConstructExpr(EmptyShell Empty) 709 : Expr(CXXConstructExprClass, Empty), Constructor(0), 710 Elidable(0), ZeroInitialization(0), 711 ConstructKind(0), Args(0), NumArgs(0) { } 712 713 static CXXConstructExpr *Create(ASTContext &C, QualType T, 714 SourceLocation Loc, 715 CXXConstructorDecl *D, bool Elidable, 716 Expr **Args, unsigned NumArgs, 717 bool ZeroInitialization = false, 718 ConstructionKind ConstructKind = CK_Complete); 719 720 721 CXXConstructorDecl* getConstructor() const { return Constructor; } 722 void setConstructor(CXXConstructorDecl *C) { Constructor = C; } 723 724 SourceLocation getLocation() const { return Loc; } 725 void setLocation(SourceLocation Loc) { this->Loc = Loc; } 726 727 /// \brief Whether this construction is elidable. 728 bool isElidable() const { return Elidable; } 729 void setElidable(bool E) { Elidable = E; } 730 731 /// \brief Whether this construction first requires 732 /// zero-initialization before the initializer is called. 733 bool requiresZeroInitialization() const { return ZeroInitialization; } 734 void setRequiresZeroInitialization(bool ZeroInit) { 735 ZeroInitialization = ZeroInit; 736 } 737 738 /// \brief Determines whether this constructor is actually constructing 739 /// a base class (rather than a complete object). 740 ConstructionKind getConstructionKind() const { 741 return (ConstructionKind)ConstructKind; 742 } 743 void setConstructionKind(ConstructionKind CK) { 744 ConstructKind = CK; 745 } 746 747 typedef ExprIterator arg_iterator; 748 typedef ConstExprIterator const_arg_iterator; 749 750 arg_iterator arg_begin() { return Args; } 751 arg_iterator arg_end() { return Args + NumArgs; } 752 const_arg_iterator arg_begin() const { return Args; } 753 const_arg_iterator arg_end() const { return Args + NumArgs; } 754 755 Expr **getArgs() const { return reinterpret_cast<Expr **>(Args); } 756 unsigned getNumArgs() const { return NumArgs; } 757 758 /// getArg - Return the specified argument. 759 Expr *getArg(unsigned Arg) { 760 assert(Arg < NumArgs && "Arg access out of range!"); 761 return cast<Expr>(Args[Arg]); 762 } 763 const Expr *getArg(unsigned Arg) const { 764 assert(Arg < NumArgs && "Arg access out of range!"); 765 return cast<Expr>(Args[Arg]); 766 } 767 768 /// setArg - Set the specified argument. 769 void setArg(unsigned Arg, Expr *ArgExpr) { 770 assert(Arg < NumArgs && "Arg access out of range!"); 771 Args[Arg] = ArgExpr; 772 } 773 774 virtual SourceRange getSourceRange() const; 775 776 static bool classof(const Stmt *T) { 777 return T->getStmtClass() == CXXConstructExprClass || 778 T->getStmtClass() == CXXTemporaryObjectExprClass; 779 } 780 static bool classof(const CXXConstructExpr *) { return true; } 781 782 // Iterators 783 virtual child_iterator child_begin(); 784 virtual child_iterator child_end(); 785 786 friend class PCHStmtReader; 787}; 788 789/// CXXFunctionalCastExpr - Represents an explicit C++ type conversion 790/// that uses "functional" notion (C++ [expr.type.conv]). Example: @c 791/// x = int(0.5); 792class CXXFunctionalCastExpr : public ExplicitCastExpr { 793 SourceLocation TyBeginLoc; 794 SourceLocation RParenLoc; 795public: 796 CXXFunctionalCastExpr(QualType ty, TypeSourceInfo *writtenTy, 797 SourceLocation tyBeginLoc, CastKind kind, 798 Expr *castExpr, CXXBaseSpecifierArray BasePath, 799 SourceLocation rParenLoc) 800 : ExplicitCastExpr(CXXFunctionalCastExprClass, ty, kind, castExpr, 801 BasePath, writtenTy), 802 TyBeginLoc(tyBeginLoc), RParenLoc(rParenLoc) {} 803 804 explicit CXXFunctionalCastExpr(EmptyShell Shell) 805 : ExplicitCastExpr(CXXFunctionalCastExprClass, Shell) { } 806 807 SourceLocation getTypeBeginLoc() const { return TyBeginLoc; } 808 void setTypeBeginLoc(SourceLocation L) { TyBeginLoc = L; } 809 SourceLocation getRParenLoc() const { return RParenLoc; } 810 void setRParenLoc(SourceLocation L) { RParenLoc = L; } 811 812 virtual SourceRange getSourceRange() const { 813 return SourceRange(TyBeginLoc, RParenLoc); 814 } 815 static bool classof(const Stmt *T) { 816 return T->getStmtClass() == CXXFunctionalCastExprClass; 817 } 818 static bool classof(const CXXFunctionalCastExpr *) { return true; } 819}; 820 821/// @brief Represents a C++ functional cast expression that builds a 822/// temporary object. 823/// 824/// This expression type represents a C++ "functional" cast 825/// (C++[expr.type.conv]) with N != 1 arguments that invokes a 826/// constructor to build a temporary object. With N == 1 arguments the 827/// functional cast expression will be represented by CXXFunctionalCastExpr. 828/// Example: 829/// @code 830/// struct X { X(int, float); } 831/// 832/// X create_X() { 833/// return X(1, 3.14f); // creates a CXXTemporaryObjectExpr 834/// }; 835/// @endcode 836class CXXTemporaryObjectExpr : public CXXConstructExpr { 837 SourceLocation TyBeginLoc; 838 SourceLocation RParenLoc; 839 840public: 841 CXXTemporaryObjectExpr(ASTContext &C, CXXConstructorDecl *Cons, 842 QualType writtenTy, SourceLocation tyBeginLoc, 843 Expr **Args,unsigned NumArgs, 844 SourceLocation rParenLoc, 845 bool ZeroInitialization = false); 846 explicit CXXTemporaryObjectExpr(EmptyShell Empty) 847 : CXXConstructExpr(CXXTemporaryObjectExprClass, Empty) { } 848 849 ~CXXTemporaryObjectExpr() { } 850 851 SourceLocation getTypeBeginLoc() const { return TyBeginLoc; } 852 SourceLocation getRParenLoc() const { return RParenLoc; } 853 854 virtual SourceRange getSourceRange() const { 855 return SourceRange(TyBeginLoc, RParenLoc); 856 } 857 static bool classof(const Stmt *T) { 858 return T->getStmtClass() == CXXTemporaryObjectExprClass; 859 } 860 static bool classof(const CXXTemporaryObjectExpr *) { return true; } 861 862 friend class PCHStmtReader; 863}; 864 865/// CXXScalarValueInitExpr - [C++ 5.2.3p2] 866/// Expression "T()" which creates a value-initialized rvalue of type 867/// T, which is a non-class type. 868/// 869class CXXScalarValueInitExpr : public Expr { 870 SourceLocation TyBeginLoc; 871 SourceLocation RParenLoc; 872 873public: 874 CXXScalarValueInitExpr(QualType ty, SourceLocation tyBeginLoc, 875 SourceLocation rParenLoc ) : 876 Expr(CXXScalarValueInitExprClass, ty, false, false), 877 TyBeginLoc(tyBeginLoc), RParenLoc(rParenLoc) {} 878 explicit CXXScalarValueInitExpr(EmptyShell Shell) 879 : Expr(CXXScalarValueInitExprClass, Shell) { } 880 881 SourceLocation getTypeBeginLoc() const { return TyBeginLoc; } 882 SourceLocation getRParenLoc() const { return RParenLoc; } 883 884 void setTypeBeginLoc(SourceLocation L) { TyBeginLoc = L; } 885 void setRParenLoc(SourceLocation L) { RParenLoc = L; } 886 887 /// @brief Whether this initialization expression was 888 /// implicitly-generated. 889 bool isImplicit() const { 890 return TyBeginLoc.isInvalid() && RParenLoc.isInvalid(); 891 } 892 893 virtual SourceRange getSourceRange() const { 894 return SourceRange(TyBeginLoc, RParenLoc); 895 } 896 897 static bool classof(const Stmt *T) { 898 return T->getStmtClass() == CXXScalarValueInitExprClass; 899 } 900 static bool classof(const CXXScalarValueInitExpr *) { return true; } 901 902 // Iterators 903 virtual child_iterator child_begin(); 904 virtual child_iterator child_end(); 905}; 906 907/// CXXNewExpr - A new expression for memory allocation and constructor calls, 908/// e.g: "new CXXNewExpr(foo)". 909class CXXNewExpr : public Expr { 910 // Was the usage ::new, i.e. is the global new to be used? 911 bool GlobalNew : 1; 912 // Is there an initializer? If not, built-ins are uninitialized, else they're 913 // value-initialized. 914 bool Initializer : 1; 915 // Do we allocate an array? If so, the first SubExpr is the size expression. 916 bool Array : 1; 917 // The number of placement new arguments. 918 unsigned NumPlacementArgs : 15; 919 // The number of constructor arguments. This may be 1 even for non-class 920 // types; use the pseudo copy constructor. 921 unsigned NumConstructorArgs : 14; 922 // Contains an optional array size expression, any number of optional 923 // placement arguments, and any number of optional constructor arguments, 924 // in that order. 925 Stmt **SubExprs; 926 // Points to the allocation function used. 927 FunctionDecl *OperatorNew; 928 // Points to the deallocation function used in case of error. May be null. 929 FunctionDecl *OperatorDelete; 930 // Points to the constructor used. Cannot be null if AllocType is a record; 931 // it would still point at the default constructor (even an implicit one). 932 // Must be null for all other types. 933 CXXConstructorDecl *Constructor; 934 935 /// \brief If the allocated type was expressed as a parenthesized type-id, 936 /// the source range covering the parenthesized type-id. 937 SourceRange TypeIdParens; 938 939 SourceLocation StartLoc; 940 SourceLocation EndLoc; 941 942 friend class PCHStmtReader; 943public: 944 CXXNewExpr(ASTContext &C, bool globalNew, FunctionDecl *operatorNew, 945 Expr **placementArgs, unsigned numPlaceArgs, 946 SourceRange TypeIdParens, 947 Expr *arraySize, CXXConstructorDecl *constructor, bool initializer, 948 Expr **constructorArgs, unsigned numConsArgs, 949 FunctionDecl *operatorDelete, QualType ty, 950 SourceLocation startLoc, SourceLocation endLoc); 951 explicit CXXNewExpr(EmptyShell Shell) 952 : Expr(CXXNewExprClass, Shell), SubExprs(0) { } 953 954 void AllocateArgsArray(ASTContext &C, bool isArray, unsigned numPlaceArgs, 955 unsigned numConsArgs); 956 957 QualType getAllocatedType() const { 958 assert(getType()->isPointerType()); 959 return getType()->getAs<PointerType>()->getPointeeType(); 960 } 961 962 FunctionDecl *getOperatorNew() const { return OperatorNew; } 963 void setOperatorNew(FunctionDecl *D) { OperatorNew = D; } 964 FunctionDecl *getOperatorDelete() const { return OperatorDelete; } 965 void setOperatorDelete(FunctionDecl *D) { OperatorDelete = D; } 966 CXXConstructorDecl *getConstructor() const { return Constructor; } 967 void setConstructor(CXXConstructorDecl *D) { Constructor = D; } 968 969 bool isArray() const { return Array; } 970 Expr *getArraySize() { 971 return Array ? cast<Expr>(SubExprs[0]) : 0; 972 } 973 const Expr *getArraySize() const { 974 return Array ? cast<Expr>(SubExprs[0]) : 0; 975 } 976 977 unsigned getNumPlacementArgs() const { return NumPlacementArgs; } 978 Expr *getPlacementArg(unsigned i) { 979 assert(i < NumPlacementArgs && "Index out of range"); 980 return cast<Expr>(SubExprs[Array + i]); 981 } 982 const Expr *getPlacementArg(unsigned i) const { 983 assert(i < NumPlacementArgs && "Index out of range"); 984 return cast<Expr>(SubExprs[Array + i]); 985 } 986 987 bool isParenTypeId() const { return TypeIdParens.isValid(); } 988 SourceRange getTypeIdParens() const { return TypeIdParens; } 989 990 bool isGlobalNew() const { return GlobalNew; } 991 void setGlobalNew(bool V) { GlobalNew = V; } 992 bool hasInitializer() const { return Initializer; } 993 void setHasInitializer(bool V) { Initializer = V; } 994 995 unsigned getNumConstructorArgs() const { return NumConstructorArgs; } 996 Expr *getConstructorArg(unsigned i) { 997 assert(i < NumConstructorArgs && "Index out of range"); 998 return cast<Expr>(SubExprs[Array + NumPlacementArgs + i]); 999 } 1000 const Expr *getConstructorArg(unsigned i) const { 1001 assert(i < NumConstructorArgs && "Index out of range"); 1002 return cast<Expr>(SubExprs[Array + NumPlacementArgs + i]); 1003 } 1004 1005 typedef ExprIterator arg_iterator; 1006 typedef ConstExprIterator const_arg_iterator; 1007 1008 arg_iterator placement_arg_begin() { 1009 return SubExprs + Array; 1010 } 1011 arg_iterator placement_arg_end() { 1012 return SubExprs + Array + getNumPlacementArgs(); 1013 } 1014 const_arg_iterator placement_arg_begin() const { 1015 return SubExprs + Array; 1016 } 1017 const_arg_iterator placement_arg_end() const { 1018 return SubExprs + Array + getNumPlacementArgs(); 1019 } 1020 1021 arg_iterator constructor_arg_begin() { 1022 return SubExprs + Array + getNumPlacementArgs(); 1023 } 1024 arg_iterator constructor_arg_end() { 1025 return SubExprs + Array + getNumPlacementArgs() + getNumConstructorArgs(); 1026 } 1027 const_arg_iterator constructor_arg_begin() const { 1028 return SubExprs + Array + getNumPlacementArgs(); 1029 } 1030 const_arg_iterator constructor_arg_end() const { 1031 return SubExprs + Array + getNumPlacementArgs() + getNumConstructorArgs(); 1032 } 1033 1034 typedef Stmt **raw_arg_iterator; 1035 raw_arg_iterator raw_arg_begin() { return SubExprs; } 1036 raw_arg_iterator raw_arg_end() { 1037 return SubExprs + Array + getNumPlacementArgs() + getNumConstructorArgs(); 1038 } 1039 const_arg_iterator raw_arg_begin() const { return SubExprs; } 1040 const_arg_iterator raw_arg_end() const { return constructor_arg_end(); } 1041 1042 1043 SourceLocation getStartLoc() const { return StartLoc; } 1044 void setStartLoc(SourceLocation L) { StartLoc = L; } 1045 SourceLocation getEndLoc() const { return EndLoc; } 1046 void setEndLoc(SourceLocation L) { EndLoc = L; } 1047 1048 virtual SourceRange getSourceRange() const { 1049 return SourceRange(StartLoc, EndLoc); 1050 } 1051 1052 static bool classof(const Stmt *T) { 1053 return T->getStmtClass() == CXXNewExprClass; 1054 } 1055 static bool classof(const CXXNewExpr *) { return true; } 1056 1057 // Iterators 1058 virtual child_iterator child_begin(); 1059 virtual child_iterator child_end(); 1060}; 1061 1062/// CXXDeleteExpr - A delete expression for memory deallocation and destructor 1063/// calls, e.g. "delete[] pArray". 1064class CXXDeleteExpr : public Expr { 1065 // Is this a forced global delete, i.e. "::delete"? 1066 bool GlobalDelete : 1; 1067 // Is this the array form of delete, i.e. "delete[]"? 1068 bool ArrayForm : 1; 1069 // Points to the operator delete overload that is used. Could be a member. 1070 FunctionDecl *OperatorDelete; 1071 // The pointer expression to be deleted. 1072 Stmt *Argument; 1073 // Location of the expression. 1074 SourceLocation Loc; 1075public: 1076 CXXDeleteExpr(QualType ty, bool globalDelete, bool arrayForm, 1077 FunctionDecl *operatorDelete, Expr *arg, SourceLocation loc) 1078 : Expr(CXXDeleteExprClass, ty, false, false), GlobalDelete(globalDelete), 1079 ArrayForm(arrayForm), OperatorDelete(operatorDelete), Argument(arg), 1080 Loc(loc) { } 1081 explicit CXXDeleteExpr(EmptyShell Shell) 1082 : Expr(CXXDeleteExprClass, Shell), OperatorDelete(0), Argument(0) { } 1083 1084 bool isGlobalDelete() const { return GlobalDelete; } 1085 bool isArrayForm() const { return ArrayForm; } 1086 1087 void setGlobalDelete(bool V) { GlobalDelete = V; } 1088 void setArrayForm(bool V) { ArrayForm = V; } 1089 1090 FunctionDecl *getOperatorDelete() const { return OperatorDelete; } 1091 void setOperatorDelete(FunctionDecl *D) { OperatorDelete = D; } 1092 1093 Expr *getArgument() { return cast<Expr>(Argument); } 1094 const Expr *getArgument() const { return cast<Expr>(Argument); } 1095 void setArgument(Expr *E) { Argument = E; } 1096 1097 virtual SourceRange getSourceRange() const { 1098 return SourceRange(Loc, Argument->getLocEnd()); 1099 } 1100 void setStartLoc(SourceLocation L) { Loc = L; } 1101 1102 static bool classof(const Stmt *T) { 1103 return T->getStmtClass() == CXXDeleteExprClass; 1104 } 1105 static bool classof(const CXXDeleteExpr *) { return true; } 1106 1107 // Iterators 1108 virtual child_iterator child_begin(); 1109 virtual child_iterator child_end(); 1110}; 1111 1112/// \brief Structure used to store the type being destroyed by a 1113/// pseudo-destructor expression. 1114class PseudoDestructorTypeStorage { 1115 /// \brief Either the type source information or the name of the type, if 1116 /// it couldn't be resolved due to type-dependence. 1117 llvm::PointerUnion<TypeSourceInfo *, IdentifierInfo *> Type; 1118 1119 /// \brief The starting source location of the pseudo-destructor type. 1120 SourceLocation Location; 1121 1122public: 1123 PseudoDestructorTypeStorage() { } 1124 1125 PseudoDestructorTypeStorage(IdentifierInfo *II, SourceLocation Loc) 1126 : Type(II), Location(Loc) { } 1127 1128 PseudoDestructorTypeStorage(TypeSourceInfo *Info); 1129 1130 TypeSourceInfo *getTypeSourceInfo() const { 1131 return Type.dyn_cast<TypeSourceInfo *>(); 1132 } 1133 1134 IdentifierInfo *getIdentifier() const { 1135 return Type.dyn_cast<IdentifierInfo *>(); 1136 } 1137 1138 SourceLocation getLocation() const { return Location; } 1139}; 1140 1141/// \brief Represents a C++ pseudo-destructor (C++ [expr.pseudo]). 1142/// 1143/// A pseudo-destructor is an expression that looks like a member access to a 1144/// destructor of a scalar type, except that scalar types don't have 1145/// destructors. For example: 1146/// 1147/// \code 1148/// typedef int T; 1149/// void f(int *p) { 1150/// p->T::~T(); 1151/// } 1152/// \endcode 1153/// 1154/// Pseudo-destructors typically occur when instantiating templates such as: 1155/// 1156/// \code 1157/// template<typename T> 1158/// void destroy(T* ptr) { 1159/// ptr->T::~T(); 1160/// } 1161/// \endcode 1162/// 1163/// for scalar types. A pseudo-destructor expression has no run-time semantics 1164/// beyond evaluating the base expression. 1165class CXXPseudoDestructorExpr : public Expr { 1166 /// \brief The base expression (that is being destroyed). 1167 Stmt *Base; 1168 1169 /// \brief Whether the operator was an arrow ('->'); otherwise, it was a 1170 /// period ('.'). 1171 bool IsArrow : 1; 1172 1173 /// \brief The location of the '.' or '->' operator. 1174 SourceLocation OperatorLoc; 1175 1176 /// \brief The nested-name-specifier that follows the operator, if present. 1177 NestedNameSpecifier *Qualifier; 1178 1179 /// \brief The source range that covers the nested-name-specifier, if 1180 /// present. 1181 SourceRange QualifierRange; 1182 1183 /// \brief The type that precedes the '::' in a qualified pseudo-destructor 1184 /// expression. 1185 TypeSourceInfo *ScopeType; 1186 1187 /// \brief The location of the '::' in a qualified pseudo-destructor 1188 /// expression. 1189 SourceLocation ColonColonLoc; 1190 1191 /// \brief The location of the '~'. 1192 SourceLocation TildeLoc; 1193 1194 /// \brief The type being destroyed, or its name if we were unable to 1195 /// resolve the name. 1196 PseudoDestructorTypeStorage DestroyedType; 1197 1198public: 1199 CXXPseudoDestructorExpr(ASTContext &Context, 1200 Expr *Base, bool isArrow, SourceLocation OperatorLoc, 1201 NestedNameSpecifier *Qualifier, 1202 SourceRange QualifierRange, 1203 TypeSourceInfo *ScopeType, 1204 SourceLocation ColonColonLoc, 1205 SourceLocation TildeLoc, 1206 PseudoDestructorTypeStorage DestroyedType) 1207 : Expr(CXXPseudoDestructorExprClass, 1208 Context.getPointerType(Context.getFunctionType(Context.VoidTy, 0, 0, 1209 false, 0, false, 1210 false, 0, 0, 1211 FunctionType::ExtInfo())), 1212 /*isTypeDependent=*/(Base->isTypeDependent() || 1213 (DestroyedType.getTypeSourceInfo() && 1214 DestroyedType.getTypeSourceInfo()->getType()->isDependentType())), 1215 /*isValueDependent=*/Base->isValueDependent()), 1216 Base(static_cast<Stmt *>(Base)), IsArrow(isArrow), 1217 OperatorLoc(OperatorLoc), Qualifier(Qualifier), 1218 QualifierRange(QualifierRange), 1219 ScopeType(ScopeType), ColonColonLoc(ColonColonLoc), TildeLoc(TildeLoc), 1220 DestroyedType(DestroyedType) { } 1221 1222 explicit CXXPseudoDestructorExpr(EmptyShell Shell) 1223 : Expr(CXXPseudoDestructorExprClass, Shell), 1224 Base(0), IsArrow(false), Qualifier(0), ScopeType(0) { } 1225 1226 void setBase(Expr *E) { Base = E; } 1227 Expr *getBase() const { return cast<Expr>(Base); } 1228 1229 /// \brief Determines whether this member expression actually had 1230 /// a C++ nested-name-specifier prior to the name of the member, e.g., 1231 /// x->Base::foo. 1232 bool hasQualifier() const { return Qualifier != 0; } 1233 1234 /// \brief If the member name was qualified, retrieves the source range of 1235 /// the nested-name-specifier that precedes the member name. Otherwise, 1236 /// returns an empty source range. 1237 SourceRange getQualifierRange() const { return QualifierRange; } 1238 void setQualifierRange(SourceRange R) { QualifierRange = R; } 1239 1240 /// \brief If the member name was qualified, retrieves the 1241 /// nested-name-specifier that precedes the member name. Otherwise, returns 1242 /// NULL. 1243 NestedNameSpecifier *getQualifier() const { return Qualifier; } 1244 void setQualifier(NestedNameSpecifier *NNS) { Qualifier = NNS; } 1245 1246 /// \brief Determine whether this pseudo-destructor expression was written 1247 /// using an '->' (otherwise, it used a '.'). 1248 bool isArrow() const { return IsArrow; } 1249 void setArrow(bool A) { IsArrow = A; } 1250 1251 /// \brief Retrieve the location of the '.' or '->' operator. 1252 SourceLocation getOperatorLoc() const { return OperatorLoc; } 1253 void setOperatorLoc(SourceLocation L) { OperatorLoc = L; } 1254 1255 /// \brief Retrieve the scope type in a qualified pseudo-destructor 1256 /// expression. 1257 /// 1258 /// Pseudo-destructor expressions can have extra qualification within them 1259 /// that is not part of the nested-name-specifier, e.g., \c p->T::~T(). 1260 /// Here, if the object type of the expression is (or may be) a scalar type, 1261 /// \p T may also be a scalar type and, therefore, cannot be part of a 1262 /// nested-name-specifier. It is stored as the "scope type" of the pseudo- 1263 /// destructor expression. 1264 TypeSourceInfo *getScopeTypeInfo() const { return ScopeType; } 1265 void setScopeTypeInfo(TypeSourceInfo *Info) { ScopeType = Info; } 1266 1267 /// \brief Retrieve the location of the '::' in a qualified pseudo-destructor 1268 /// expression. 1269 SourceLocation getColonColonLoc() const { return ColonColonLoc; } 1270 void setColonColonLoc(SourceLocation L) { ColonColonLoc = L; } 1271 1272 /// \brief Retrieve the location of the '~'. 1273 SourceLocation getTildeLoc() const { return TildeLoc; } 1274 void setTildeLoc(SourceLocation L) { TildeLoc = L; } 1275 1276 /// \brief Retrieve the source location information for the type 1277 /// being destroyed. 1278 /// 1279 /// This type-source information is available for non-dependent 1280 /// pseudo-destructor expressions and some dependent pseudo-destructor 1281 /// expressions. Returns NULL if we only have the identifier for a 1282 /// dependent pseudo-destructor expression. 1283 TypeSourceInfo *getDestroyedTypeInfo() const { 1284 return DestroyedType.getTypeSourceInfo(); 1285 } 1286 1287 /// \brief In a dependent pseudo-destructor expression for which we do not 1288 /// have full type information on the destroyed type, provides the name 1289 /// of the destroyed type. 1290 IdentifierInfo *getDestroyedTypeIdentifier() const { 1291 return DestroyedType.getIdentifier(); 1292 } 1293 1294 /// \brief Retrieve the type being destroyed. 1295 QualType getDestroyedType() const; 1296 1297 /// \brief Retrieve the starting location of the type being destroyed. 1298 SourceLocation getDestroyedTypeLoc() const { 1299 return DestroyedType.getLocation(); 1300 } 1301 1302 /// \brief Set the name of destroyed type for a dependent pseudo-destructor 1303 /// expression. 1304 void setDestroyedType(IdentifierInfo *II, SourceLocation Loc) { 1305 DestroyedType = PseudoDestructorTypeStorage(II, Loc); 1306 } 1307 1308 /// \brief Set the destroyed type. 1309 void setDestroyedType(TypeSourceInfo *Info) { 1310 DestroyedType = PseudoDestructorTypeStorage(Info); 1311 } 1312 1313 virtual SourceRange getSourceRange() const; 1314 1315 static bool classof(const Stmt *T) { 1316 return T->getStmtClass() == CXXPseudoDestructorExprClass; 1317 } 1318 static bool classof(const CXXPseudoDestructorExpr *) { return true; } 1319 1320 // Iterators 1321 virtual child_iterator child_begin(); 1322 virtual child_iterator child_end(); 1323}; 1324 1325/// UnaryTypeTraitExpr - A GCC or MS unary type trait, as used in the 1326/// implementation of TR1/C++0x type trait templates. 1327/// Example: 1328/// __is_pod(int) == true 1329/// __is_enum(std::string) == false 1330class UnaryTypeTraitExpr : public Expr { 1331 /// UTT - The trait. 1332 UnaryTypeTrait UTT; 1333 1334 /// Loc - The location of the type trait keyword. 1335 SourceLocation Loc; 1336 1337 /// RParen - The location of the closing paren. 1338 SourceLocation RParen; 1339 1340 /// QueriedType - The type we're testing. 1341 QualType QueriedType; 1342 1343public: 1344 UnaryTypeTraitExpr(SourceLocation loc, UnaryTypeTrait utt, QualType queried, 1345 SourceLocation rparen, QualType ty) 1346 : Expr(UnaryTypeTraitExprClass, ty, false, queried->isDependentType()), 1347 UTT(utt), Loc(loc), RParen(rparen), QueriedType(queried) { } 1348 1349 explicit UnaryTypeTraitExpr(EmptyShell Empty) 1350 : Expr(UnaryTypeTraitExprClass, Empty), UTT((UnaryTypeTrait)0) { } 1351 1352 virtual SourceRange getSourceRange() const { return SourceRange(Loc, RParen);} 1353 1354 UnaryTypeTrait getTrait() const { return UTT; } 1355 1356 QualType getQueriedType() const { return QueriedType; } 1357 1358 bool EvaluateTrait(ASTContext&) const; 1359 1360 static bool classof(const Stmt *T) { 1361 return T->getStmtClass() == UnaryTypeTraitExprClass; 1362 } 1363 static bool classof(const UnaryTypeTraitExpr *) { return true; } 1364 1365 // Iterators 1366 virtual child_iterator child_begin(); 1367 virtual child_iterator child_end(); 1368 1369 friend class PCHStmtReader; 1370}; 1371 1372/// \brief A reference to an overloaded function set, either an 1373/// \t UnresolvedLookupExpr or an \t UnresolvedMemberExpr. 1374class OverloadExpr : public Expr { 1375 /// The results. These are undesugared, which is to say, they may 1376 /// include UsingShadowDecls. Access is relative to the naming 1377 /// class. 1378 // FIXME: Allocate this data after the OverloadExpr subclass. 1379 DeclAccessPair *Results; 1380 unsigned NumResults; 1381 1382 /// The common name of these declarations. 1383 DeclarationName Name; 1384 1385 /// The scope specifier, if any. 1386 NestedNameSpecifier *Qualifier; 1387 1388 /// The source range of the scope specifier. 1389 SourceRange QualifierRange; 1390 1391 /// The location of the name. 1392 SourceLocation NameLoc; 1393 1394protected: 1395 /// True if the name was a template-id. 1396 bool HasExplicitTemplateArgs; 1397 1398 OverloadExpr(StmtClass K, ASTContext &C, QualType T, bool Dependent, 1399 NestedNameSpecifier *Qualifier, SourceRange QRange, 1400 DeclarationName Name, SourceLocation NameLoc, 1401 bool HasTemplateArgs, 1402 UnresolvedSetIterator Begin, UnresolvedSetIterator End); 1403 1404 OverloadExpr(StmtClass K, EmptyShell Empty) 1405 : Expr(K, Empty), Results(0), NumResults(0), 1406 Qualifier(0), HasExplicitTemplateArgs(false) { } 1407 1408public: 1409 /// Computes whether an unresolved lookup on the given declarations 1410 /// and optional template arguments is type- and value-dependent. 1411 static bool ComputeDependence(UnresolvedSetIterator Begin, 1412 UnresolvedSetIterator End, 1413 const TemplateArgumentListInfo *Args); 1414 1415 /// Finds the overloaded expression in the given expression of 1416 /// OverloadTy. 1417 /// 1418 /// \return the expression (which must be there) and true if it is 1419 /// within an address-of operator. 1420 static llvm::PointerIntPair<OverloadExpr*,1> find(Expr *E) { 1421 assert(E->getType()->isSpecificBuiltinType(BuiltinType::Overload)); 1422 1423 bool op = false; 1424 E = E->IgnoreParens(); 1425 if (isa<UnaryOperator>(E)) 1426 op = true, E = cast<UnaryOperator>(E)->getSubExpr()->IgnoreParens(); 1427 return llvm::PointerIntPair<OverloadExpr*,1>(cast<OverloadExpr>(E), op); 1428 } 1429 1430 /// Gets the naming class of this lookup, if any. 1431 CXXRecordDecl *getNamingClass() const; 1432 1433 typedef UnresolvedSetImpl::iterator decls_iterator; 1434 decls_iterator decls_begin() const { return UnresolvedSetIterator(Results); } 1435 decls_iterator decls_end() const { 1436 return UnresolvedSetIterator(Results + NumResults); 1437 } 1438 1439 void initializeResults(ASTContext &C, 1440 UnresolvedSetIterator Begin,UnresolvedSetIterator End); 1441 1442 /// Gets the number of declarations in the unresolved set. 1443 unsigned getNumDecls() const { return NumResults; } 1444 1445 /// Gets the name looked up. 1446 DeclarationName getName() const { return Name; } 1447 void setName(DeclarationName N) { Name = N; } 1448 1449 /// Gets the location of the name. 1450 SourceLocation getNameLoc() const { return NameLoc; } 1451 void setNameLoc(SourceLocation Loc) { NameLoc = Loc; } 1452 1453 /// Fetches the nested-name qualifier, if one was given. 1454 NestedNameSpecifier *getQualifier() const { return Qualifier; } 1455 void setQualifier(NestedNameSpecifier *NNS) { Qualifier = NNS; } 1456 1457 /// Fetches the range of the nested-name qualifier. 1458 SourceRange getQualifierRange() const { return QualifierRange; } 1459 void setQualifierRange(SourceRange R) { QualifierRange = R; } 1460 1461 /// \brief Determines whether this expression had an explicit 1462 /// template argument list, e.g. f<int>. 1463 bool hasExplicitTemplateArgs() const { return HasExplicitTemplateArgs; } 1464 1465 ExplicitTemplateArgumentList &getExplicitTemplateArgs(); // defined far below 1466 1467 const ExplicitTemplateArgumentList &getExplicitTemplateArgs() const { 1468 return const_cast<OverloadExpr*>(this)->getExplicitTemplateArgs(); 1469 } 1470 1471 ExplicitTemplateArgumentList *getOptionalExplicitTemplateArgs() { 1472 if (hasExplicitTemplateArgs()) 1473 return &getExplicitTemplateArgs(); 1474 return 0; 1475 } 1476 1477 static bool classof(const Stmt *T) { 1478 return T->getStmtClass() == UnresolvedLookupExprClass || 1479 T->getStmtClass() == UnresolvedMemberExprClass; 1480 } 1481 static bool classof(const OverloadExpr *) { return true; } 1482}; 1483 1484/// \brief A reference to a name which we were able to look up during 1485/// parsing but could not resolve to a specific declaration. This 1486/// arises in several ways: 1487/// * we might be waiting for argument-dependent lookup 1488/// * the name might resolve to an overloaded function 1489/// and eventually: 1490/// * the lookup might have included a function template 1491/// These never include UnresolvedUsingValueDecls, which are always 1492/// class members and therefore appear only in 1493/// UnresolvedMemberLookupExprs. 1494class UnresolvedLookupExpr : public OverloadExpr { 1495 /// True if these lookup results should be extended by 1496 /// argument-dependent lookup if this is the operand of a function 1497 /// call. 1498 bool RequiresADL; 1499 1500 /// True if these lookup results are overloaded. This is pretty 1501 /// trivially rederivable if we urgently need to kill this field. 1502 bool Overloaded; 1503 1504 /// The naming class (C++ [class.access.base]p5) of the lookup, if 1505 /// any. This can generally be recalculated from the context chain, 1506 /// but that can be fairly expensive for unqualified lookups. If we 1507 /// want to improve memory use here, this could go in a union 1508 /// against the qualified-lookup bits. 1509 CXXRecordDecl *NamingClass; 1510 1511 UnresolvedLookupExpr(ASTContext &C, QualType T, bool Dependent, 1512 CXXRecordDecl *NamingClass, 1513 NestedNameSpecifier *Qualifier, SourceRange QRange, 1514 DeclarationName Name, SourceLocation NameLoc, 1515 bool RequiresADL, bool Overloaded, bool HasTemplateArgs, 1516 UnresolvedSetIterator Begin, UnresolvedSetIterator End) 1517 : OverloadExpr(UnresolvedLookupExprClass, C, T, Dependent, Qualifier, 1518 QRange, Name, NameLoc, HasTemplateArgs, Begin, End), 1519 RequiresADL(RequiresADL), Overloaded(Overloaded), NamingClass(NamingClass) 1520 {} 1521 1522 UnresolvedLookupExpr(EmptyShell Empty) 1523 : OverloadExpr(UnresolvedLookupExprClass, Empty), 1524 RequiresADL(false), Overloaded(false), NamingClass(0) 1525 {} 1526 1527public: 1528 static UnresolvedLookupExpr *Create(ASTContext &C, 1529 bool Dependent, 1530 CXXRecordDecl *NamingClass, 1531 NestedNameSpecifier *Qualifier, 1532 SourceRange QualifierRange, 1533 DeclarationName Name, 1534 SourceLocation NameLoc, 1535 bool ADL, bool Overloaded, 1536 UnresolvedSetIterator Begin, 1537 UnresolvedSetIterator End) { 1538 return new(C) UnresolvedLookupExpr(C, 1539 Dependent ? C.DependentTy : C.OverloadTy, 1540 Dependent, NamingClass, 1541 Qualifier, QualifierRange, 1542 Name, NameLoc, ADL, Overloaded, false, 1543 Begin, End); 1544 } 1545 1546 static UnresolvedLookupExpr *Create(ASTContext &C, 1547 bool Dependent, 1548 CXXRecordDecl *NamingClass, 1549 NestedNameSpecifier *Qualifier, 1550 SourceRange QualifierRange, 1551 DeclarationName Name, 1552 SourceLocation NameLoc, 1553 bool ADL, 1554 const TemplateArgumentListInfo &Args, 1555 UnresolvedSetIterator Begin, 1556 UnresolvedSetIterator End); 1557 1558 static UnresolvedLookupExpr *CreateEmpty(ASTContext &C, 1559 unsigned NumTemplateArgs); 1560 1561 /// True if this declaration should be extended by 1562 /// argument-dependent lookup. 1563 bool requiresADL() const { return RequiresADL; } 1564 void setRequiresADL(bool V) { RequiresADL = V; } 1565 1566 /// True if this lookup is overloaded. 1567 bool isOverloaded() const { return Overloaded; } 1568 void setOverloaded(bool V) { Overloaded = V; } 1569 1570 /// Gets the 'naming class' (in the sense of C++0x 1571 /// [class.access.base]p5) of the lookup. This is the scope 1572 /// that was looked in to find these results. 1573 CXXRecordDecl *getNamingClass() const { return NamingClass; } 1574 void setNamingClass(CXXRecordDecl *D) { NamingClass = D; } 1575 1576 // Note that, inconsistently with the explicit-template-argument AST 1577 // nodes, users are *forbidden* from calling these methods on objects 1578 // without explicit template arguments. 1579 1580 ExplicitTemplateArgumentList &getExplicitTemplateArgs() { 1581 assert(hasExplicitTemplateArgs()); 1582 return *reinterpret_cast<ExplicitTemplateArgumentList*>(this + 1); 1583 } 1584 1585 /// Gets a reference to the explicit template argument list. 1586 const ExplicitTemplateArgumentList &getExplicitTemplateArgs() const { 1587 assert(hasExplicitTemplateArgs()); 1588 return *reinterpret_cast<const ExplicitTemplateArgumentList*>(this + 1); 1589 } 1590 1591 /// \brief Copies the template arguments (if present) into the given 1592 /// structure. 1593 void copyTemplateArgumentsInto(TemplateArgumentListInfo &List) const { 1594 getExplicitTemplateArgs().copyInto(List); 1595 } 1596 1597 SourceLocation getLAngleLoc() const { 1598 return getExplicitTemplateArgs().LAngleLoc; 1599 } 1600 1601 SourceLocation getRAngleLoc() const { 1602 return getExplicitTemplateArgs().RAngleLoc; 1603 } 1604 1605 TemplateArgumentLoc const *getTemplateArgs() const { 1606 return getExplicitTemplateArgs().getTemplateArgs(); 1607 } 1608 1609 unsigned getNumTemplateArgs() const { 1610 return getExplicitTemplateArgs().NumTemplateArgs; 1611 } 1612 1613 virtual SourceRange getSourceRange() const { 1614 SourceRange Range(getNameLoc()); 1615 if (getQualifier()) Range.setBegin(getQualifierRange().getBegin()); 1616 if (hasExplicitTemplateArgs()) Range.setEnd(getRAngleLoc()); 1617 return Range; 1618 } 1619 1620 virtual StmtIterator child_begin(); 1621 virtual StmtIterator child_end(); 1622 1623 static bool classof(const Stmt *T) { 1624 return T->getStmtClass() == UnresolvedLookupExprClass; 1625 } 1626 static bool classof(const UnresolvedLookupExpr *) { return true; } 1627}; 1628 1629/// \brief A qualified reference to a name whose declaration cannot 1630/// yet be resolved. 1631/// 1632/// DependentScopeDeclRefExpr is similar to DeclRefExpr in that 1633/// it expresses a reference to a declaration such as 1634/// X<T>::value. The difference, however, is that an 1635/// DependentScopeDeclRefExpr node is used only within C++ templates when 1636/// the qualification (e.g., X<T>::) refers to a dependent type. In 1637/// this case, X<T>::value cannot resolve to a declaration because the 1638/// declaration will differ from on instantiation of X<T> to the 1639/// next. Therefore, DependentScopeDeclRefExpr keeps track of the 1640/// qualifier (X<T>::) and the name of the entity being referenced 1641/// ("value"). Such expressions will instantiate to a DeclRefExpr once the 1642/// declaration can be found. 1643class DependentScopeDeclRefExpr : public Expr { 1644 /// The name of the entity we will be referencing. 1645 DeclarationName Name; 1646 1647 /// Location of the name of the declaration we're referencing. 1648 SourceLocation Loc; 1649 1650 /// QualifierRange - The source range that covers the 1651 /// nested-name-specifier. 1652 SourceRange QualifierRange; 1653 1654 /// \brief The nested-name-specifier that qualifies this unresolved 1655 /// declaration name. 1656 NestedNameSpecifier *Qualifier; 1657 1658 /// \brief Whether the name includes explicit template arguments. 1659 bool HasExplicitTemplateArgs; 1660 1661 DependentScopeDeclRefExpr(QualType T, 1662 NestedNameSpecifier *Qualifier, 1663 SourceRange QualifierRange, 1664 DeclarationName Name, 1665 SourceLocation NameLoc, 1666 bool HasExplicitTemplateArgs) 1667 : Expr(DependentScopeDeclRefExprClass, T, true, true), 1668 Name(Name), Loc(NameLoc), 1669 QualifierRange(QualifierRange), Qualifier(Qualifier), 1670 HasExplicitTemplateArgs(HasExplicitTemplateArgs) 1671 {} 1672 1673public: 1674 static DependentScopeDeclRefExpr *Create(ASTContext &C, 1675 NestedNameSpecifier *Qualifier, 1676 SourceRange QualifierRange, 1677 DeclarationName Name, 1678 SourceLocation NameLoc, 1679 const TemplateArgumentListInfo *TemplateArgs = 0); 1680 1681 static DependentScopeDeclRefExpr *CreateEmpty(ASTContext &C, 1682 unsigned NumTemplateArgs); 1683 1684 /// \brief Retrieve the name that this expression refers to. 1685 DeclarationName getDeclName() const { return Name; } 1686 void setDeclName(DeclarationName N) { Name = N; } 1687 1688 /// \brief Retrieve the location of the name within the expression. 1689 SourceLocation getLocation() const { return Loc; } 1690 void setLocation(SourceLocation L) { Loc = L; } 1691 1692 /// \brief Retrieve the source range of the nested-name-specifier. 1693 SourceRange getQualifierRange() const { return QualifierRange; } 1694 void setQualifierRange(SourceRange R) { QualifierRange = R; } 1695 1696 /// \brief Retrieve the nested-name-specifier that qualifies this 1697 /// declaration. 1698 NestedNameSpecifier *getQualifier() const { return Qualifier; } 1699 void setQualifier(NestedNameSpecifier *NNS) { Qualifier = NNS; } 1700 1701 /// Determines whether this lookup had explicit template arguments. 1702 bool hasExplicitTemplateArgs() const { return HasExplicitTemplateArgs; } 1703 1704 // Note that, inconsistently with the explicit-template-argument AST 1705 // nodes, users are *forbidden* from calling these methods on objects 1706 // without explicit template arguments. 1707 1708 ExplicitTemplateArgumentList &getExplicitTemplateArgs() { 1709 assert(hasExplicitTemplateArgs()); 1710 return *reinterpret_cast<ExplicitTemplateArgumentList*>(this + 1); 1711 } 1712 1713 /// Gets a reference to the explicit template argument list. 1714 const ExplicitTemplateArgumentList &getExplicitTemplateArgs() const { 1715 assert(hasExplicitTemplateArgs()); 1716 return *reinterpret_cast<const ExplicitTemplateArgumentList*>(this + 1); 1717 } 1718 1719 /// \brief Copies the template arguments (if present) into the given 1720 /// structure. 1721 void copyTemplateArgumentsInto(TemplateArgumentListInfo &List) const { 1722 getExplicitTemplateArgs().copyInto(List); 1723 } 1724 1725 SourceLocation getLAngleLoc() const { 1726 return getExplicitTemplateArgs().LAngleLoc; 1727 } 1728 1729 SourceLocation getRAngleLoc() const { 1730 return getExplicitTemplateArgs().RAngleLoc; 1731 } 1732 1733 TemplateArgumentLoc const *getTemplateArgs() const { 1734 return getExplicitTemplateArgs().getTemplateArgs(); 1735 } 1736 1737 unsigned getNumTemplateArgs() const { 1738 return getExplicitTemplateArgs().NumTemplateArgs; 1739 } 1740 1741 virtual SourceRange getSourceRange() const { 1742 SourceRange Range(QualifierRange.getBegin(), getLocation()); 1743 if (hasExplicitTemplateArgs()) 1744 Range.setEnd(getRAngleLoc()); 1745 return Range; 1746 } 1747 1748 static bool classof(const Stmt *T) { 1749 return T->getStmtClass() == DependentScopeDeclRefExprClass; 1750 } 1751 static bool classof(const DependentScopeDeclRefExpr *) { return true; } 1752 1753 virtual StmtIterator child_begin(); 1754 virtual StmtIterator child_end(); 1755}; 1756 1757class CXXExprWithTemporaries : public Expr { 1758 Stmt *SubExpr; 1759 1760 CXXTemporary **Temps; 1761 unsigned NumTemps; 1762 1763 CXXExprWithTemporaries(ASTContext &C, Expr *SubExpr, CXXTemporary **Temps, 1764 unsigned NumTemps); 1765 ~CXXExprWithTemporaries(); 1766 1767public: 1768 CXXExprWithTemporaries(EmptyShell Empty) 1769 : Expr(CXXExprWithTemporariesClass, Empty), 1770 SubExpr(0), Temps(0), NumTemps(0) {} 1771 1772 static CXXExprWithTemporaries *Create(ASTContext &C, Expr *SubExpr, 1773 CXXTemporary **Temps, 1774 unsigned NumTemps); 1775 1776 unsigned getNumTemporaries() const { return NumTemps; } 1777 void setNumTemporaries(ASTContext &C, unsigned N); 1778 1779 CXXTemporary *getTemporary(unsigned i) { 1780 assert(i < NumTemps && "Index out of range"); 1781 return Temps[i]; 1782 } 1783 const CXXTemporary *getTemporary(unsigned i) const { 1784 return const_cast<CXXExprWithTemporaries*>(this)->getTemporary(i); 1785 } 1786 void setTemporary(unsigned i, CXXTemporary *T) { 1787 assert(i < NumTemps && "Index out of range"); 1788 Temps[i] = T; 1789 } 1790 1791 Expr *getSubExpr() { return cast<Expr>(SubExpr); } 1792 const Expr *getSubExpr() const { return cast<Expr>(SubExpr); } 1793 void setSubExpr(Expr *E) { SubExpr = E; } 1794 1795 virtual SourceRange getSourceRange() const { 1796 return SubExpr->getSourceRange(); 1797 } 1798 1799 // Implement isa/cast/dyncast/etc. 1800 static bool classof(const Stmt *T) { 1801 return T->getStmtClass() == CXXExprWithTemporariesClass; 1802 } 1803 static bool classof(const CXXExprWithTemporaries *) { return true; } 1804 1805 // Iterators 1806 virtual child_iterator child_begin(); 1807 virtual child_iterator child_end(); 1808}; 1809 1810/// \brief Describes an explicit type conversion that uses functional 1811/// notion but could not be resolved because one or more arguments are 1812/// type-dependent. 1813/// 1814/// The explicit type conversions expressed by 1815/// CXXUnresolvedConstructExpr have the form \c T(a1, a2, ..., aN), 1816/// where \c T is some type and \c a1, a2, ..., aN are values, and 1817/// either \C T is a dependent type or one or more of the \c a's is 1818/// type-dependent. For example, this would occur in a template such 1819/// as: 1820/// 1821/// \code 1822/// template<typename T, typename A1> 1823/// inline T make_a(const A1& a1) { 1824/// return T(a1); 1825/// } 1826/// \endcode 1827/// 1828/// When the returned expression is instantiated, it may resolve to a 1829/// constructor call, conversion function call, or some kind of type 1830/// conversion. 1831class CXXUnresolvedConstructExpr : public Expr { 1832 /// \brief The starting location of the type 1833 SourceLocation TyBeginLoc; 1834 1835 /// \brief The type being constructed. 1836 QualType Type; 1837 1838 /// \brief The location of the left parentheses ('('). 1839 SourceLocation LParenLoc; 1840 1841 /// \brief The location of the right parentheses (')'). 1842 SourceLocation RParenLoc; 1843 1844 /// \brief The number of arguments used to construct the type. 1845 unsigned NumArgs; 1846 1847 CXXUnresolvedConstructExpr(SourceLocation TyBegin, 1848 QualType T, 1849 SourceLocation LParenLoc, 1850 Expr **Args, 1851 unsigned NumArgs, 1852 SourceLocation RParenLoc); 1853 1854 CXXUnresolvedConstructExpr(EmptyShell Empty, unsigned NumArgs) 1855 : Expr(CXXUnresolvedConstructExprClass, Empty), NumArgs(NumArgs) { } 1856 1857public: 1858 static CXXUnresolvedConstructExpr *Create(ASTContext &C, 1859 SourceLocation TyBegin, 1860 QualType T, 1861 SourceLocation LParenLoc, 1862 Expr **Args, 1863 unsigned NumArgs, 1864 SourceLocation RParenLoc); 1865 1866 static CXXUnresolvedConstructExpr *CreateEmpty(ASTContext &C, 1867 unsigned NumArgs); 1868 1869 /// \brief Retrieve the source location where the type begins. 1870 SourceLocation getTypeBeginLoc() const { return TyBeginLoc; } 1871 void setTypeBeginLoc(SourceLocation L) { TyBeginLoc = L; } 1872 1873 /// \brief Retrieve the type that is being constructed, as specified 1874 /// in the source code. 1875 QualType getTypeAsWritten() const { return Type; } 1876 void setTypeAsWritten(QualType T) { Type = T; } 1877 1878 /// \brief Retrieve the location of the left parentheses ('(') that 1879 /// precedes the argument list. 1880 SourceLocation getLParenLoc() const { return LParenLoc; } 1881 void setLParenLoc(SourceLocation L) { LParenLoc = L; } 1882 1883 /// \brief Retrieve the location of the right parentheses (')') that 1884 /// follows the argument list. 1885 SourceLocation getRParenLoc() const { return RParenLoc; } 1886 void setRParenLoc(SourceLocation L) { RParenLoc = L; } 1887 1888 /// \brief Retrieve the number of arguments. 1889 unsigned arg_size() const { return NumArgs; } 1890 1891 typedef Expr** arg_iterator; 1892 arg_iterator arg_begin() { return reinterpret_cast<Expr**>(this + 1); } 1893 arg_iterator arg_end() { return arg_begin() + NumArgs; } 1894 1895 typedef const Expr* const * const_arg_iterator; 1896 const_arg_iterator arg_begin() const { 1897 return reinterpret_cast<const Expr* const *>(this + 1); 1898 } 1899 const_arg_iterator arg_end() const { 1900 return arg_begin() + NumArgs; 1901 } 1902 1903 Expr *getArg(unsigned I) { 1904 assert(I < NumArgs && "Argument index out-of-range"); 1905 return *(arg_begin() + I); 1906 } 1907 1908 const Expr *getArg(unsigned I) const { 1909 assert(I < NumArgs && "Argument index out-of-range"); 1910 return *(arg_begin() + I); 1911 } 1912 1913 void setArg(unsigned I, Expr *E) { 1914 assert(I < NumArgs && "Argument index out-of-range"); 1915 *(arg_begin() + I) = E; 1916 } 1917 1918 virtual SourceRange getSourceRange() const { 1919 return SourceRange(TyBeginLoc, RParenLoc); 1920 } 1921 static bool classof(const Stmt *T) { 1922 return T->getStmtClass() == CXXUnresolvedConstructExprClass; 1923 } 1924 static bool classof(const CXXUnresolvedConstructExpr *) { return true; } 1925 1926 // Iterators 1927 virtual child_iterator child_begin(); 1928 virtual child_iterator child_end(); 1929}; 1930 1931/// \brief Represents a C++ member access expression where the actual 1932/// member referenced could not be resolved because the base 1933/// expression or the member name was dependent. 1934/// 1935/// Like UnresolvedMemberExprs, these can be either implicit or 1936/// explicit accesses. It is only possible to get one of these with 1937/// an implicit access if a qualifier is provided. 1938class CXXDependentScopeMemberExpr : public Expr { 1939 /// \brief The expression for the base pointer or class reference, 1940 /// e.g., the \c x in x.f. Can be null in implicit accesses. 1941 Stmt *Base; 1942 1943 /// \brief The type of the base expression. Never null, even for 1944 /// implicit accesses. 1945 QualType BaseType; 1946 1947 /// \brief Whether this member expression used the '->' operator or 1948 /// the '.' operator. 1949 bool IsArrow : 1; 1950 1951 /// \brief Whether this member expression has explicitly-specified template 1952 /// arguments. 1953 bool HasExplicitTemplateArgs : 1; 1954 1955 /// \brief The location of the '->' or '.' operator. 1956 SourceLocation OperatorLoc; 1957 1958 /// \brief The nested-name-specifier that precedes the member name, if any. 1959 NestedNameSpecifier *Qualifier; 1960 1961 /// \brief The source range covering the nested name specifier. 1962 SourceRange QualifierRange; 1963 1964 /// \brief In a qualified member access expression such as t->Base::f, this 1965 /// member stores the resolves of name lookup in the context of the member 1966 /// access expression, to be used at instantiation time. 1967 /// 1968 /// FIXME: This member, along with the Qualifier and QualifierRange, could 1969 /// be stuck into a structure that is optionally allocated at the end of 1970 /// the CXXDependentScopeMemberExpr, to save space in the common case. 1971 NamedDecl *FirstQualifierFoundInScope; 1972 1973 /// \brief The member to which this member expression refers, which 1974 /// can be name, overloaded operator, or destructor. 1975 /// FIXME: could also be a template-id 1976 DeclarationName Member; 1977 1978 /// \brief The location of the member name. 1979 SourceLocation MemberLoc; 1980 1981 CXXDependentScopeMemberExpr(ASTContext &C, 1982 Expr *Base, QualType BaseType, bool IsArrow, 1983 SourceLocation OperatorLoc, 1984 NestedNameSpecifier *Qualifier, 1985 SourceRange QualifierRange, 1986 NamedDecl *FirstQualifierFoundInScope, 1987 DeclarationName Member, 1988 SourceLocation MemberLoc, 1989 const TemplateArgumentListInfo *TemplateArgs); 1990 1991public: 1992 CXXDependentScopeMemberExpr(ASTContext &C, 1993 Expr *Base, QualType BaseType, 1994 bool IsArrow, 1995 SourceLocation OperatorLoc, 1996 NestedNameSpecifier *Qualifier, 1997 SourceRange QualifierRange, 1998 NamedDecl *FirstQualifierFoundInScope, 1999 DeclarationName Member, 2000 SourceLocation MemberLoc) 2001 : Expr(CXXDependentScopeMemberExprClass, C.DependentTy, true, true), 2002 Base(Base), BaseType(BaseType), IsArrow(IsArrow), 2003 HasExplicitTemplateArgs(false), OperatorLoc(OperatorLoc), 2004 Qualifier(Qualifier), QualifierRange(QualifierRange), 2005 FirstQualifierFoundInScope(FirstQualifierFoundInScope), 2006 Member(Member), MemberLoc(MemberLoc) { } 2007 2008 static CXXDependentScopeMemberExpr * 2009 Create(ASTContext &C, 2010 Expr *Base, QualType BaseType, bool IsArrow, 2011 SourceLocation OperatorLoc, 2012 NestedNameSpecifier *Qualifier, 2013 SourceRange QualifierRange, 2014 NamedDecl *FirstQualifierFoundInScope, 2015 DeclarationName Member, 2016 SourceLocation MemberLoc, 2017 const TemplateArgumentListInfo *TemplateArgs); 2018 2019 static CXXDependentScopeMemberExpr * 2020 CreateEmpty(ASTContext &C, unsigned NumTemplateArgs); 2021 2022 /// \brief True if this is an implicit access, i.e. one in which the 2023 /// member being accessed was not written in the source. The source 2024 /// location of the operator is invalid in this case. 2025 bool isImplicitAccess() const { return Base == 0; } 2026 2027 /// \brief Retrieve the base object of this member expressions, 2028 /// e.g., the \c x in \c x.m. 2029 Expr *getBase() const { 2030 assert(!isImplicitAccess()); 2031 return cast<Expr>(Base); 2032 } 2033 void setBase(Expr *E) { Base = E; } 2034 2035 QualType getBaseType() const { return BaseType; } 2036 void setBaseType(QualType T) { BaseType = T; } 2037 2038 /// \brief Determine whether this member expression used the '->' 2039 /// operator; otherwise, it used the '.' operator. 2040 bool isArrow() const { return IsArrow; } 2041 void setArrow(bool A) { IsArrow = A; } 2042 2043 /// \brief Retrieve the location of the '->' or '.' operator. 2044 SourceLocation getOperatorLoc() const { return OperatorLoc; } 2045 void setOperatorLoc(SourceLocation L) { OperatorLoc = L; } 2046 2047 /// \brief Retrieve the nested-name-specifier that qualifies the member 2048 /// name. 2049 NestedNameSpecifier *getQualifier() const { return Qualifier; } 2050 void setQualifier(NestedNameSpecifier *NNS) { Qualifier = NNS; } 2051 2052 /// \brief Retrieve the source range covering the nested-name-specifier 2053 /// that qualifies the member name. 2054 SourceRange getQualifierRange() const { return QualifierRange; } 2055 void setQualifierRange(SourceRange R) { QualifierRange = R; } 2056 2057 /// \brief Retrieve the first part of the nested-name-specifier that was 2058 /// found in the scope of the member access expression when the member access 2059 /// was initially parsed. 2060 /// 2061 /// This function only returns a useful result when member access expression 2062 /// uses a qualified member name, e.g., "x.Base::f". Here, the declaration 2063 /// returned by this function describes what was found by unqualified name 2064 /// lookup for the identifier "Base" within the scope of the member access 2065 /// expression itself. At template instantiation time, this information is 2066 /// combined with the results of name lookup into the type of the object 2067 /// expression itself (the class type of x). 2068 NamedDecl *getFirstQualifierFoundInScope() const { 2069 return FirstQualifierFoundInScope; 2070 } 2071 void setFirstQualifierFoundInScope(NamedDecl *D) { 2072 FirstQualifierFoundInScope = D; 2073 } 2074 2075 /// \brief Retrieve the name of the member that this expression 2076 /// refers to. 2077 DeclarationName getMember() const { return Member; } 2078 void setMember(DeclarationName N) { Member = N; } 2079 2080 // \brief Retrieve the location of the name of the member that this 2081 // expression refers to. 2082 SourceLocation getMemberLoc() const { return MemberLoc; } 2083 void setMemberLoc(SourceLocation L) { MemberLoc = L; } 2084 2085 /// \brief Determines whether this member expression actually had a C++ 2086 /// template argument list explicitly specified, e.g., x.f<int>. 2087 bool hasExplicitTemplateArgs() const { 2088 return HasExplicitTemplateArgs; 2089 } 2090 2091 /// \brief Retrieve the explicit template argument list that followed the 2092 /// member template name, if any. 2093 ExplicitTemplateArgumentList *getExplicitTemplateArgumentList() { 2094 assert(HasExplicitTemplateArgs); 2095 return reinterpret_cast<ExplicitTemplateArgumentList *>(this + 1); 2096 } 2097 2098 /// \brief Retrieve the explicit template argument list that followed the 2099 /// member template name, if any. 2100 const ExplicitTemplateArgumentList *getExplicitTemplateArgumentList() const { 2101 return const_cast<CXXDependentScopeMemberExpr *>(this) 2102 ->getExplicitTemplateArgumentList(); 2103 } 2104 2105 /// \brief Copies the template arguments (if present) into the given 2106 /// structure. 2107 void copyTemplateArgumentsInto(TemplateArgumentListInfo &List) const { 2108 assert(HasExplicitTemplateArgs); 2109 getExplicitTemplateArgumentList()->copyInto(List); 2110 } 2111 2112 /// \brief Initializes the template arguments using the given structure. 2113 void initializeTemplateArgumentsFrom(const TemplateArgumentListInfo &List) { 2114 assert(HasExplicitTemplateArgs); 2115 getExplicitTemplateArgumentList()->initializeFrom(List); 2116 } 2117 2118 /// \brief Retrieve the location of the left angle bracket following the 2119 /// member name ('<'), if any. 2120 SourceLocation getLAngleLoc() const { 2121 assert(HasExplicitTemplateArgs); 2122 return getExplicitTemplateArgumentList()->LAngleLoc; 2123 } 2124 2125 /// \brief Retrieve the template arguments provided as part of this 2126 /// template-id. 2127 const TemplateArgumentLoc *getTemplateArgs() const { 2128 assert(HasExplicitTemplateArgs); 2129 return getExplicitTemplateArgumentList()->getTemplateArgs(); 2130 } 2131 2132 /// \brief Retrieve the number of template arguments provided as part of this 2133 /// template-id. 2134 unsigned getNumTemplateArgs() const { 2135 assert(HasExplicitTemplateArgs); 2136 return getExplicitTemplateArgumentList()->NumTemplateArgs; 2137 } 2138 2139 /// \brief Retrieve the location of the right angle bracket following the 2140 /// template arguments ('>'). 2141 SourceLocation getRAngleLoc() const { 2142 assert(HasExplicitTemplateArgs); 2143 return getExplicitTemplateArgumentList()->RAngleLoc; 2144 } 2145 2146 virtual SourceRange getSourceRange() const { 2147 SourceRange Range; 2148 if (!isImplicitAccess()) 2149 Range.setBegin(Base->getSourceRange().getBegin()); 2150 else if (getQualifier()) 2151 Range.setBegin(getQualifierRange().getBegin()); 2152 else 2153 Range.setBegin(MemberLoc); 2154 2155 if (hasExplicitTemplateArgs()) 2156 Range.setEnd(getRAngleLoc()); 2157 else 2158 Range.setEnd(MemberLoc); 2159 return Range; 2160 } 2161 2162 static bool classof(const Stmt *T) { 2163 return T->getStmtClass() == CXXDependentScopeMemberExprClass; 2164 } 2165 static bool classof(const CXXDependentScopeMemberExpr *) { return true; } 2166 2167 // Iterators 2168 virtual child_iterator child_begin(); 2169 virtual child_iterator child_end(); 2170}; 2171 2172/// \brief Represents a C++ member access expression for which lookup 2173/// produced a set of overloaded functions. 2174/// 2175/// The member access may be explicit or implicit: 2176/// struct A { 2177/// int a, b; 2178/// int explicitAccess() { return this->a + this->A::b; } 2179/// int implicitAccess() { return a + A::b; } 2180/// }; 2181/// 2182/// In the final AST, an explicit access always becomes a MemberExpr. 2183/// An implicit access may become either a MemberExpr or a 2184/// DeclRefExpr, depending on whether the member is static. 2185class UnresolvedMemberExpr : public OverloadExpr { 2186 /// \brief Whether this member expression used the '->' operator or 2187 /// the '.' operator. 2188 bool IsArrow : 1; 2189 2190 /// \brief Whether the lookup results contain an unresolved using 2191 /// declaration. 2192 bool HasUnresolvedUsing : 1; 2193 2194 /// \brief The expression for the base pointer or class reference, 2195 /// e.g., the \c x in x.f. This can be null if this is an 'unbased' 2196 /// member expression 2197 Stmt *Base; 2198 2199 /// \brief The type of the base expression; never null. 2200 QualType BaseType; 2201 2202 /// \brief The location of the '->' or '.' operator. 2203 SourceLocation OperatorLoc; 2204 2205 UnresolvedMemberExpr(ASTContext &C, QualType T, bool Dependent, 2206 bool HasUnresolvedUsing, 2207 Expr *Base, QualType BaseType, bool IsArrow, 2208 SourceLocation OperatorLoc, 2209 NestedNameSpecifier *Qualifier, 2210 SourceRange QualifierRange, 2211 DeclarationName Member, 2212 SourceLocation MemberLoc, 2213 const TemplateArgumentListInfo *TemplateArgs, 2214 UnresolvedSetIterator Begin, UnresolvedSetIterator End); 2215 2216 UnresolvedMemberExpr(EmptyShell Empty) 2217 : OverloadExpr(UnresolvedMemberExprClass, Empty), IsArrow(false), 2218 HasUnresolvedUsing(false), Base(0) { } 2219 2220public: 2221 static UnresolvedMemberExpr * 2222 Create(ASTContext &C, bool Dependent, bool HasUnresolvedUsing, 2223 Expr *Base, QualType BaseType, bool IsArrow, 2224 SourceLocation OperatorLoc, 2225 NestedNameSpecifier *Qualifier, 2226 SourceRange QualifierRange, 2227 DeclarationName Member, 2228 SourceLocation MemberLoc, 2229 const TemplateArgumentListInfo *TemplateArgs, 2230 UnresolvedSetIterator Begin, UnresolvedSetIterator End); 2231 2232 static UnresolvedMemberExpr * 2233 CreateEmpty(ASTContext &C, unsigned NumTemplateArgs); 2234 2235 /// \brief True if this is an implicit access, i.e. one in which the 2236 /// member being accessed was not written in the source. The source 2237 /// location of the operator is invalid in this case. 2238 bool isImplicitAccess() const { return Base == 0; } 2239 2240 /// \brief Retrieve the base object of this member expressions, 2241 /// e.g., the \c x in \c x.m. 2242 Expr *getBase() { 2243 assert(!isImplicitAccess()); 2244 return cast<Expr>(Base); 2245 } 2246 const Expr *getBase() const { 2247 assert(!isImplicitAccess()); 2248 return cast<Expr>(Base); 2249 } 2250 void setBase(Expr *E) { Base = E; } 2251 2252 QualType getBaseType() const { return BaseType; } 2253 void setBaseType(QualType T) { BaseType = T; } 2254 2255 /// \brief Determine whether the lookup results contain an unresolved using 2256 /// declaration. 2257 bool hasUnresolvedUsing() const { return HasUnresolvedUsing; } 2258 void setHasUnresolvedUsing(bool V) { HasUnresolvedUsing = V; } 2259 2260 /// \brief Determine whether this member expression used the '->' 2261 /// operator; otherwise, it used the '.' operator. 2262 bool isArrow() const { return IsArrow; } 2263 void setArrow(bool A) { IsArrow = A; } 2264 2265 /// \brief Retrieve the location of the '->' or '.' operator. 2266 SourceLocation getOperatorLoc() const { return OperatorLoc; } 2267 void setOperatorLoc(SourceLocation L) { OperatorLoc = L; } 2268 2269 /// \brief Retrieves the naming class of this lookup. 2270 CXXRecordDecl *getNamingClass() const; 2271 2272 /// \brief Retrieve the name of the member that this expression 2273 /// refers to. 2274 DeclarationName getMemberName() const { return getName(); } 2275 void setMemberName(DeclarationName N) { setName(N); } 2276 2277 // \brief Retrieve the location of the name of the member that this 2278 // expression refers to. 2279 SourceLocation getMemberLoc() const { return getNameLoc(); } 2280 void setMemberLoc(SourceLocation L) { setNameLoc(L); } 2281 2282 /// \brief Retrieve the explicit template argument list that followed the 2283 /// member template name. 2284 ExplicitTemplateArgumentList &getExplicitTemplateArgs() { 2285 assert(hasExplicitTemplateArgs()); 2286 return *reinterpret_cast<ExplicitTemplateArgumentList *>(this + 1); 2287 } 2288 2289 /// \brief Retrieve the explicit template argument list that followed the 2290 /// member template name, if any. 2291 const ExplicitTemplateArgumentList &getExplicitTemplateArgs() const { 2292 assert(hasExplicitTemplateArgs()); 2293 return *reinterpret_cast<const ExplicitTemplateArgumentList *>(this + 1); 2294 } 2295 2296 /// \brief Copies the template arguments into the given structure. 2297 void copyTemplateArgumentsInto(TemplateArgumentListInfo &List) const { 2298 getExplicitTemplateArgs().copyInto(List); 2299 } 2300 2301 /// \brief Retrieve the location of the left angle bracket following 2302 /// the member name ('<'). 2303 SourceLocation getLAngleLoc() const { 2304 return getExplicitTemplateArgs().LAngleLoc; 2305 } 2306 2307 /// \brief Retrieve the template arguments provided as part of this 2308 /// template-id. 2309 const TemplateArgumentLoc *getTemplateArgs() const { 2310 return getExplicitTemplateArgs().getTemplateArgs(); 2311 } 2312 2313 /// \brief Retrieve the number of template arguments provided as 2314 /// part of this template-id. 2315 unsigned getNumTemplateArgs() const { 2316 return getExplicitTemplateArgs().NumTemplateArgs; 2317 } 2318 2319 /// \brief Retrieve the location of the right angle bracket 2320 /// following the template arguments ('>'). 2321 SourceLocation getRAngleLoc() const { 2322 return getExplicitTemplateArgs().RAngleLoc; 2323 } 2324 2325 virtual SourceRange getSourceRange() const { 2326 SourceRange Range; 2327 if (!isImplicitAccess()) 2328 Range.setBegin(Base->getSourceRange().getBegin()); 2329 else if (getQualifier()) 2330 Range.setBegin(getQualifierRange().getBegin()); 2331 else 2332 Range.setBegin(getMemberLoc()); 2333 2334 if (hasExplicitTemplateArgs()) 2335 Range.setEnd(getRAngleLoc()); 2336 else 2337 Range.setEnd(getMemberLoc()); 2338 return Range; 2339 } 2340 2341 static bool classof(const Stmt *T) { 2342 return T->getStmtClass() == UnresolvedMemberExprClass; 2343 } 2344 static bool classof(const UnresolvedMemberExpr *) { return true; } 2345 2346 // Iterators 2347 virtual child_iterator child_begin(); 2348 virtual child_iterator child_end(); 2349}; 2350 2351inline ExplicitTemplateArgumentList &OverloadExpr::getExplicitTemplateArgs() { 2352 if (isa<UnresolvedLookupExpr>(this)) 2353 return cast<UnresolvedLookupExpr>(this)->getExplicitTemplateArgs(); 2354 else 2355 return cast<UnresolvedMemberExpr>(this)->getExplicitTemplateArgs(); 2356} 2357 2358} // end namespace clang 2359 2360#endif 2361