ExprCXX.h revision 036aed18662e0193aafe0e8ae13d2e57efe6df25
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/Decl.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 /// getImplicitObjectArgument - Retrieves the implicit object 96 /// argument for the member call. For example, in "x.f(5)", this 97 /// operation would return "x". 98 Expr *getImplicitObjectArgument(); 99 100 virtual SourceRange getSourceRange() const; 101 102 static bool classof(const Stmt *T) { 103 return T->getStmtClass() == CXXMemberCallExprClass; 104 } 105 static bool classof(const CXXMemberCallExpr *) { return true; } 106}; 107 108/// CXXNamedCastExpr - Abstract class common to all of the C++ "named" 109/// casts, @c static_cast, @c dynamic_cast, @c reinterpret_cast, or @c 110/// const_cast. 111/// 112/// This abstract class is inherited by all of the classes 113/// representing "named" casts, e.g., CXXStaticCastExpr, 114/// CXXDynamicCastExpr, CXXReinterpretCastExpr, and CXXConstCastExpr. 115class CXXNamedCastExpr : public ExplicitCastExpr { 116private: 117 SourceLocation Loc; // the location of the casting op 118 119protected: 120 CXXNamedCastExpr(StmtClass SC, QualType ty, CastKind kind, Expr *op, 121 QualType writtenTy, SourceLocation l) 122 : ExplicitCastExpr(SC, ty, kind, op, writtenTy), Loc(l) {} 123 124public: 125 const char *getCastName() const; 126 127 /// \brief Retrieve the location of the cast operator keyword, e.g., 128 /// "static_cast". 129 SourceLocation getOperatorLoc() const { return Loc; } 130 void setOperatorLoc(SourceLocation L) { Loc = L; } 131 132 virtual SourceRange getSourceRange() const { 133 return SourceRange(Loc, getSubExpr()->getSourceRange().getEnd()); 134 } 135 static bool classof(const Stmt *T) { 136 switch (T->getStmtClass()) { 137 case CXXNamedCastExprClass: 138 case CXXStaticCastExprClass: 139 case CXXDynamicCastExprClass: 140 case CXXReinterpretCastExprClass: 141 case CXXConstCastExprClass: 142 return true; 143 default: 144 return false; 145 } 146 } 147 static bool classof(const CXXNamedCastExpr *) { return true; } 148}; 149 150/// CXXStaticCastExpr - A C++ @c static_cast expression (C++ [expr.static.cast]). 151/// 152/// This expression node represents a C++ static cast, e.g., 153/// @c static_cast<int>(1.0). 154class CXXStaticCastExpr : public CXXNamedCastExpr { 155public: 156 CXXStaticCastExpr(QualType ty, CastKind kind, Expr *op, 157 QualType writtenTy, SourceLocation l) 158 : CXXNamedCastExpr(CXXStaticCastExprClass, ty, kind, op, writtenTy, l) {} 159 160 static bool classof(const Stmt *T) { 161 return T->getStmtClass() == CXXStaticCastExprClass; 162 } 163 static bool classof(const CXXStaticCastExpr *) { return true; } 164}; 165 166/// CXXDynamicCastExpr - A C++ @c dynamic_cast expression 167/// (C++ [expr.dynamic.cast]), which may perform a run-time check to 168/// determine how to perform the type cast. 169/// 170/// This expression node represents a dynamic cast, e.g., 171/// @c dynamic_cast<Derived*>(BasePtr). 172class CXXDynamicCastExpr : public CXXNamedCastExpr { 173public: 174 CXXDynamicCastExpr(QualType ty, CastKind kind, Expr *op, QualType writtenTy, 175 SourceLocation l) 176 : CXXNamedCastExpr(CXXDynamicCastExprClass, ty, kind, op, writtenTy, l) {} 177 178 static bool classof(const Stmt *T) { 179 return T->getStmtClass() == CXXDynamicCastExprClass; 180 } 181 static bool classof(const CXXDynamicCastExpr *) { return true; } 182}; 183 184/// CXXReinterpretCastExpr - A C++ @c reinterpret_cast expression (C++ 185/// [expr.reinterpret.cast]), which provides a differently-typed view 186/// of a value but performs no actual work at run time. 187/// 188/// This expression node represents a reinterpret cast, e.g., 189/// @c reinterpret_cast<int>(VoidPtr). 190class CXXReinterpretCastExpr : public CXXNamedCastExpr { 191public: 192 CXXReinterpretCastExpr(QualType ty, CastKind kind, Expr *op, 193 QualType writtenTy, SourceLocation l) 194 : CXXNamedCastExpr(CXXReinterpretCastExprClass, ty, kind, op, 195 writtenTy, l) {} 196 197 static bool classof(const Stmt *T) { 198 return T->getStmtClass() == CXXReinterpretCastExprClass; 199 } 200 static bool classof(const CXXReinterpretCastExpr *) { return true; } 201}; 202 203/// CXXConstCastExpr - A C++ @c const_cast expression (C++ [expr.const.cast]), 204/// which can remove type qualifiers but does not change the underlying value. 205/// 206/// This expression node represents a const cast, e.g., 207/// @c const_cast<char*>(PtrToConstChar). 208class CXXConstCastExpr : public CXXNamedCastExpr { 209public: 210 CXXConstCastExpr(QualType ty, Expr *op, QualType writtenTy, 211 SourceLocation l) 212 : CXXNamedCastExpr(CXXConstCastExprClass, ty, CK_NoOp, op, writtenTy, l) {} 213 214 static bool classof(const Stmt *T) { 215 return T->getStmtClass() == CXXConstCastExprClass; 216 } 217 static bool classof(const CXXConstCastExpr *) { return true; } 218}; 219 220/// CXXBoolLiteralExpr - [C++ 2.13.5] C++ Boolean Literal. 221/// 222class CXXBoolLiteralExpr : public Expr { 223 bool Value; 224 SourceLocation Loc; 225public: 226 CXXBoolLiteralExpr(bool val, QualType Ty, SourceLocation l) : 227 Expr(CXXBoolLiteralExprClass, Ty), Value(val), Loc(l) {} 228 229 bool getValue() const { return Value; } 230 231 virtual SourceRange getSourceRange() const { return SourceRange(Loc); } 232 233 static bool classof(const Stmt *T) { 234 return T->getStmtClass() == CXXBoolLiteralExprClass; 235 } 236 static bool classof(const CXXBoolLiteralExpr *) { return true; } 237 238 // Iterators 239 virtual child_iterator child_begin(); 240 virtual child_iterator child_end(); 241}; 242 243/// CXXNullPtrLiteralExpr - [C++0x 2.14.7] C++ Pointer Literal 244class CXXNullPtrLiteralExpr : public Expr { 245 SourceLocation Loc; 246public: 247 CXXNullPtrLiteralExpr(QualType Ty, SourceLocation l) : 248 Expr(CXXNullPtrLiteralExprClass, Ty), Loc(l) {} 249 250 virtual SourceRange getSourceRange() const { return SourceRange(Loc); } 251 252 static bool classof(const Stmt *T) { 253 return T->getStmtClass() == CXXNullPtrLiteralExprClass; 254 } 255 static bool classof(const CXXNullPtrLiteralExpr *) { return true; } 256 257 virtual child_iterator child_begin(); 258 virtual child_iterator child_end(); 259}; 260 261/// CXXTypeidExpr - A C++ @c typeid expression (C++ [expr.typeid]), which gets 262/// the type_info that corresponds to the supplied type, or the (possibly 263/// dynamic) type of the supplied expression. 264/// 265/// This represents code like @c typeid(int) or @c typeid(*objPtr) 266class CXXTypeidExpr : public Expr { 267private: 268 bool isTypeOp : 1; 269 union { 270 void *Ty; 271 Stmt *Ex; 272 } Operand; 273 SourceRange Range; 274 275public: 276 CXXTypeidExpr(bool isTypeOp, void *op, QualType Ty, const SourceRange r) : 277 Expr(CXXTypeidExprClass, Ty, 278 // typeid is never type-dependent (C++ [temp.dep.expr]p4) 279 false, 280 // typeid is value-dependent if the type or expression are dependent 281 (isTypeOp ? QualType::getFromOpaquePtr(op)->isDependentType() 282 : static_cast<Expr*>(op)->isValueDependent())), 283 isTypeOp(isTypeOp), Range(r) { 284 if (isTypeOp) 285 Operand.Ty = op; 286 else 287 // op was an Expr*, so cast it back to that to be safe 288 Operand.Ex = static_cast<Expr*>(op); 289 } 290 291 bool isTypeOperand() const { return isTypeOp; } 292 QualType getTypeOperand() const { 293 assert(isTypeOperand() && "Cannot call getTypeOperand for typeid(expr)"); 294 return QualType::getFromOpaquePtr(Operand.Ty); 295 } 296 Expr* getExprOperand() const { 297 assert(!isTypeOperand() && "Cannot call getExprOperand for typeid(type)"); 298 return static_cast<Expr*>(Operand.Ex); 299 } 300 301 virtual SourceRange getSourceRange() const { 302 return Range; 303 } 304 static bool classof(const Stmt *T) { 305 return T->getStmtClass() == CXXTypeidExprClass; 306 } 307 static bool classof(const CXXTypeidExpr *) { return true; } 308 309 // Iterators 310 virtual child_iterator child_begin(); 311 virtual child_iterator child_end(); 312}; 313 314/// CXXThisExpr - Represents the "this" expression in C++, which is a 315/// pointer to the object on which the current member function is 316/// executing (C++ [expr.prim]p3). Example: 317/// 318/// @code 319/// class Foo { 320/// public: 321/// void bar(); 322/// void test() { this->bar(); } 323/// }; 324/// @endcode 325class CXXThisExpr : public Expr { 326 SourceLocation Loc; 327 328public: 329 CXXThisExpr(SourceLocation L, QualType Type) 330 : Expr(CXXThisExprClass, Type, 331 // 'this' is type-dependent if the class type of the enclosing 332 // member function is dependent (C++ [temp.dep.expr]p2) 333 Type->isDependentType(), Type->isDependentType()), 334 Loc(L) { } 335 336 virtual SourceRange getSourceRange() const { return SourceRange(Loc); } 337 338 static bool classof(const Stmt *T) { 339 return T->getStmtClass() == CXXThisExprClass; 340 } 341 static bool classof(const CXXThisExpr *) { return true; } 342 343 // Iterators 344 virtual child_iterator child_begin(); 345 virtual child_iterator child_end(); 346}; 347 348/// CXXThrowExpr - [C++ 15] C++ Throw Expression. This handles 349/// 'throw' and 'throw' assignment-expression. When 350/// assignment-expression isn't present, Op will be null. 351/// 352class CXXThrowExpr : public Expr { 353 Stmt *Op; 354 SourceLocation ThrowLoc; 355public: 356 // Ty is the void type which is used as the result type of the 357 // exepression. The l is the location of the throw keyword. expr 358 // can by null, if the optional expression to throw isn't present. 359 CXXThrowExpr(Expr *expr, QualType Ty, SourceLocation l) : 360 Expr(CXXThrowExprClass, Ty, false, false), Op(expr), ThrowLoc(l) {} 361 const Expr *getSubExpr() const { return cast_or_null<Expr>(Op); } 362 Expr *getSubExpr() { return cast_or_null<Expr>(Op); } 363 void setSubExpr(Expr *E) { Op = E; } 364 365 SourceLocation getThrowLoc() const { return ThrowLoc; } 366 void setThrowLoc(SourceLocation L) { ThrowLoc = L; } 367 368 virtual SourceRange getSourceRange() const { 369 if (getSubExpr() == 0) 370 return SourceRange(ThrowLoc, ThrowLoc); 371 return SourceRange(ThrowLoc, getSubExpr()->getSourceRange().getEnd()); 372 } 373 374 static bool classof(const Stmt *T) { 375 return T->getStmtClass() == CXXThrowExprClass; 376 } 377 static bool classof(const CXXThrowExpr *) { return true; } 378 379 // Iterators 380 virtual child_iterator child_begin(); 381 virtual child_iterator child_end(); 382}; 383 384/// CXXDefaultArgExpr - C++ [dcl.fct.default]. This wraps up a 385/// function call argument that was created from the corresponding 386/// parameter's default argument, when the call did not explicitly 387/// supply arguments for all of the parameters. 388class CXXDefaultArgExpr : public Expr { 389 /// \brief The parameter whose default is being used. 390 /// 391 /// When the bit is set, the subexpression is stored after the 392 /// CXXDefaultArgExpr itself. When the bit is clear, the parameter's 393 /// actual default expression is the subexpression. 394 llvm::PointerIntPair<ParmVarDecl *, 1, bool> Param; 395 396 /// \brief The location where the default argument expression was used. 397 SourceLocation Loc; 398 399protected: 400 CXXDefaultArgExpr(StmtClass SC, SourceLocation Loc, ParmVarDecl *param) 401 : Expr(SC, 402 param->hasUnparsedDefaultArg() 403 ? param->getType().getNonReferenceType() 404 : param->getDefaultArg()->getType()), 405 Param(param, false), Loc(Loc) { } 406 407 CXXDefaultArgExpr(StmtClass SC, SourceLocation Loc, ParmVarDecl *param, 408 Expr *SubExpr) 409 : Expr(SC, SubExpr->getType()), Param(param, true), Loc(Loc) 410 { 411 *reinterpret_cast<Expr **>(this + 1) = SubExpr; 412 } 413 414protected: 415 virtual void DoDestroy(ASTContext &C); 416 417public: 418 // Param is the parameter whose default argument is used by this 419 // expression. 420 static CXXDefaultArgExpr *Create(ASTContext &C, SourceLocation Loc, 421 ParmVarDecl *Param) { 422 return new (C) CXXDefaultArgExpr(CXXDefaultArgExprClass, Loc, Param); 423 } 424 425 // Param is the parameter whose default argument is used by this 426 // expression, and SubExpr is the expression that will actually be used. 427 static CXXDefaultArgExpr *Create(ASTContext &C, 428 SourceLocation Loc, 429 ParmVarDecl *Param, 430 Expr *SubExpr); 431 432 // Retrieve the parameter that the argument was created from. 433 const ParmVarDecl *getParam() const { return Param.getPointer(); } 434 ParmVarDecl *getParam() { return Param.getPointer(); } 435 436 // Retrieve the actual argument to the function call. 437 const Expr *getExpr() const { 438 if (Param.getInt()) 439 return *reinterpret_cast<Expr const * const*> (this + 1); 440 return getParam()->getDefaultArg(); 441 } 442 Expr *getExpr() { 443 if (Param.getInt()) 444 return *reinterpret_cast<Expr **> (this + 1); 445 return getParam()->getDefaultArg(); 446 } 447 448 /// \brief Retrieve the location where this default argument was actually 449 /// used. 450 SourceLocation getUsedLocation() const { return Loc; } 451 452 virtual SourceRange getSourceRange() const { 453 // Default argument expressions have no representation in the 454 // source, so they have an empty source range. 455 return SourceRange(); 456 } 457 458 static bool classof(const Stmt *T) { 459 return T->getStmtClass() == CXXDefaultArgExprClass; 460 } 461 static bool classof(const CXXDefaultArgExpr *) { return true; } 462 463 // Iterators 464 virtual child_iterator child_begin(); 465 virtual child_iterator child_end(); 466}; 467 468/// CXXTemporary - Represents a C++ temporary. 469class CXXTemporary { 470 /// Destructor - The destructor that needs to be called. 471 const CXXDestructorDecl *Destructor; 472 473 CXXTemporary(const CXXDestructorDecl *destructor) 474 : Destructor(destructor) { } 475 ~CXXTemporary() { } 476 477public: 478 static CXXTemporary *Create(ASTContext &C, 479 const CXXDestructorDecl *Destructor); 480 481 void Destroy(ASTContext &Ctx); 482 483 const CXXDestructorDecl *getDestructor() const { return Destructor; } 484}; 485 486/// CXXBindTemporaryExpr - Represents binding an expression to a temporary, 487/// so its destructor can be called later. 488class CXXBindTemporaryExpr : public Expr { 489 CXXTemporary *Temp; 490 491 Stmt *SubExpr; 492 493 CXXBindTemporaryExpr(CXXTemporary *temp, Expr* subexpr) 494 : Expr(CXXBindTemporaryExprClass, 495 subexpr->getType()), Temp(temp), SubExpr(subexpr) { } 496 ~CXXBindTemporaryExpr() { } 497 498protected: 499 virtual void DoDestroy(ASTContext &C); 500 501public: 502 static CXXBindTemporaryExpr *Create(ASTContext &C, CXXTemporary *Temp, 503 Expr* SubExpr); 504 505 CXXTemporary *getTemporary() { return Temp; } 506 const CXXTemporary *getTemporary() const { return Temp; } 507 508 const Expr *getSubExpr() const { return cast<Expr>(SubExpr); } 509 Expr *getSubExpr() { return cast<Expr>(SubExpr); } 510 void setSubExpr(Expr *E) { SubExpr = E; } 511 512 virtual SourceRange getSourceRange() const { 513 return SubExpr->getSourceRange(); 514 } 515 516 // Implement isa/cast/dyncast/etc. 517 static bool classof(const Stmt *T) { 518 return T->getStmtClass() == CXXBindTemporaryExprClass; 519 } 520 static bool classof(const CXXBindTemporaryExpr *) { return true; } 521 522 // Iterators 523 virtual child_iterator child_begin(); 524 virtual child_iterator child_end(); 525}; 526 527/// CXXConstructExpr - Represents a call to a C++ constructor. 528class CXXConstructExpr : public Expr { 529 CXXConstructorDecl *Constructor; 530 531 SourceLocation Loc; 532 bool Elidable : 1; 533 bool ZeroInitialization : 1; 534 Stmt **Args; 535 unsigned NumArgs; 536 537protected: 538 CXXConstructExpr(ASTContext &C, StmtClass SC, QualType T, 539 SourceLocation Loc, 540 CXXConstructorDecl *d, bool elidable, 541 Expr **args, unsigned numargs, 542 bool ZeroInitialization = false); 543 ~CXXConstructExpr() { } 544 545 virtual void DoDestroy(ASTContext &C); 546 547public: 548 /// \brief Construct an empty C++ construction expression that will store 549 /// \p numargs arguments. 550 CXXConstructExpr(EmptyShell Empty, ASTContext &C, unsigned numargs); 551 552 static CXXConstructExpr *Create(ASTContext &C, QualType T, 553 SourceLocation Loc, 554 CXXConstructorDecl *D, bool Elidable, 555 Expr **Args, unsigned NumArgs, 556 bool ZeroInitialization = false); 557 558 559 CXXConstructorDecl* getConstructor() const { return Constructor; } 560 void setConstructor(CXXConstructorDecl *C) { Constructor = C; } 561 562 SourceLocation getLocation() const { return Loc; } 563 void setLocation(SourceLocation Loc) { this->Loc = Loc; } 564 565 /// \brief Whether this construction is elidable. 566 bool isElidable() const { return Elidable; } 567 void setElidable(bool E) { Elidable = E; } 568 569 /// \brief Whether this construction first requires 570 /// zero-initialization before the initializer is called. 571 bool requiresZeroInitialization() const { return ZeroInitialization; } 572 void setRequiresZeroInitialization(bool ZeroInit) { 573 ZeroInitialization = ZeroInit; 574 } 575 576 typedef ExprIterator arg_iterator; 577 typedef ConstExprIterator const_arg_iterator; 578 579 arg_iterator arg_begin() { return Args; } 580 arg_iterator arg_end() { return Args + NumArgs; } 581 const_arg_iterator arg_begin() const { return Args; } 582 const_arg_iterator arg_end() const { return Args + NumArgs; } 583 584 Expr **getArgs() const { return reinterpret_cast<Expr **>(Args); } 585 unsigned getNumArgs() const { return NumArgs; } 586 587 /// getArg - Return the specified argument. 588 Expr *getArg(unsigned Arg) { 589 assert(Arg < NumArgs && "Arg access out of range!"); 590 return cast<Expr>(Args[Arg]); 591 } 592 const Expr *getArg(unsigned Arg) const { 593 assert(Arg < NumArgs && "Arg access out of range!"); 594 return cast<Expr>(Args[Arg]); 595 } 596 597 /// setArg - Set the specified argument. 598 void setArg(unsigned Arg, Expr *ArgExpr) { 599 assert(Arg < NumArgs && "Arg access out of range!"); 600 Args[Arg] = ArgExpr; 601 } 602 603 virtual SourceRange getSourceRange() const; 604 605 static bool classof(const Stmt *T) { 606 return T->getStmtClass() == CXXConstructExprClass || 607 T->getStmtClass() == CXXTemporaryObjectExprClass; 608 } 609 static bool classof(const CXXConstructExpr *) { return true; } 610 611 // Iterators 612 virtual child_iterator child_begin(); 613 virtual child_iterator child_end(); 614}; 615 616/// CXXFunctionalCastExpr - Represents an explicit C++ type conversion 617/// that uses "functional" notion (C++ [expr.type.conv]). Example: @c 618/// x = int(0.5); 619class CXXFunctionalCastExpr : public ExplicitCastExpr { 620 SourceLocation TyBeginLoc; 621 SourceLocation RParenLoc; 622public: 623 CXXFunctionalCastExpr(QualType ty, QualType writtenTy, 624 SourceLocation tyBeginLoc, CastKind kind, 625 Expr *castExpr, SourceLocation rParenLoc) 626 : ExplicitCastExpr(CXXFunctionalCastExprClass, ty, kind, castExpr, 627 writtenTy), 628 TyBeginLoc(tyBeginLoc), RParenLoc(rParenLoc) {} 629 630 SourceLocation getTypeBeginLoc() const { return TyBeginLoc; } 631 SourceLocation getRParenLoc() const { return RParenLoc; } 632 633 virtual SourceRange getSourceRange() const { 634 return SourceRange(TyBeginLoc, RParenLoc); 635 } 636 static bool classof(const Stmt *T) { 637 return T->getStmtClass() == CXXFunctionalCastExprClass; 638 } 639 static bool classof(const CXXFunctionalCastExpr *) { return true; } 640}; 641 642/// @brief Represents a C++ functional cast expression that builds a 643/// temporary object. 644/// 645/// This expression type represents a C++ "functional" cast 646/// (C++[expr.type.conv]) with N != 1 arguments that invokes a 647/// constructor to build a temporary object. If N == 0 but no 648/// constructor will be called (because the functional cast is 649/// performing a value-initialized an object whose class type has no 650/// user-declared constructors), CXXZeroInitValueExpr will represent 651/// the functional cast. Finally, with N == 1 arguments the functional 652/// cast expression will be represented by CXXFunctionalCastExpr. 653/// Example: 654/// @code 655/// struct X { X(int, float); } 656/// 657/// X create_X() { 658/// return X(1, 3.14f); // creates a CXXTemporaryObjectExpr 659/// }; 660/// @endcode 661class CXXTemporaryObjectExpr : public CXXConstructExpr { 662 SourceLocation TyBeginLoc; 663 SourceLocation RParenLoc; 664 665public: 666 CXXTemporaryObjectExpr(ASTContext &C, CXXConstructorDecl *Cons, 667 QualType writtenTy, SourceLocation tyBeginLoc, 668 Expr **Args,unsigned NumArgs, 669 SourceLocation rParenLoc); 670 671 ~CXXTemporaryObjectExpr() { } 672 673 SourceLocation getTypeBeginLoc() const { return TyBeginLoc; } 674 SourceLocation getRParenLoc() const { return RParenLoc; } 675 676 virtual SourceRange getSourceRange() const { 677 return SourceRange(TyBeginLoc, RParenLoc); 678 } 679 static bool classof(const Stmt *T) { 680 return T->getStmtClass() == CXXTemporaryObjectExprClass; 681 } 682 static bool classof(const CXXTemporaryObjectExpr *) { return true; } 683}; 684 685/// CXXZeroInitValueExpr - [C++ 5.2.3p2] 686/// Expression "T()" which creates a value-initialized rvalue of type 687/// T, which is either a non-class type or a class type without any 688/// user-defined constructors. 689/// 690class CXXZeroInitValueExpr : public Expr { 691 SourceLocation TyBeginLoc; 692 SourceLocation RParenLoc; 693 694public: 695 CXXZeroInitValueExpr(QualType ty, SourceLocation tyBeginLoc, 696 SourceLocation rParenLoc ) : 697 Expr(CXXZeroInitValueExprClass, ty, false, false), 698 TyBeginLoc(tyBeginLoc), RParenLoc(rParenLoc) {} 699 700 SourceLocation getTypeBeginLoc() const { return TyBeginLoc; } 701 SourceLocation getRParenLoc() const { return RParenLoc; } 702 703 /// @brief Whether this initialization expression was 704 /// implicitly-generated. 705 bool isImplicit() const { 706 return TyBeginLoc.isInvalid() && RParenLoc.isInvalid(); 707 } 708 709 virtual SourceRange getSourceRange() const { 710 return SourceRange(TyBeginLoc, RParenLoc); 711 } 712 713 static bool classof(const Stmt *T) { 714 return T->getStmtClass() == CXXZeroInitValueExprClass; 715 } 716 static bool classof(const CXXZeroInitValueExpr *) { return true; } 717 718 // Iterators 719 virtual child_iterator child_begin(); 720 virtual child_iterator child_end(); 721}; 722 723/// CXXNewExpr - A new expression for memory allocation and constructor calls, 724/// e.g: "new CXXNewExpr(foo)". 725class CXXNewExpr : public Expr { 726 // Was the usage ::new, i.e. is the global new to be used? 727 bool GlobalNew : 1; 728 // Was the form (type-id) used? Otherwise, it was new-type-id. 729 bool ParenTypeId : 1; 730 // Is there an initializer? If not, built-ins are uninitialized, else they're 731 // value-initialized. 732 bool Initializer : 1; 733 // Do we allocate an array? If so, the first SubExpr is the size expression. 734 bool Array : 1; 735 // The number of placement new arguments. 736 unsigned NumPlacementArgs : 14; 737 // The number of constructor arguments. This may be 1 even for non-class 738 // types; use the pseudo copy constructor. 739 unsigned NumConstructorArgs : 14; 740 // Contains an optional array size expression, any number of optional 741 // placement arguments, and any number of optional constructor arguments, 742 // in that order. 743 Stmt **SubExprs; 744 // Points to the allocation function used. 745 FunctionDecl *OperatorNew; 746 // Points to the deallocation function used in case of error. May be null. 747 FunctionDecl *OperatorDelete; 748 // Points to the constructor used. Cannot be null if AllocType is a record; 749 // it would still point at the default constructor (even an implicit one). 750 // Must be null for all other types. 751 CXXConstructorDecl *Constructor; 752 753 SourceLocation StartLoc; 754 SourceLocation EndLoc; 755 756public: 757 CXXNewExpr(bool globalNew, FunctionDecl *operatorNew, Expr **placementArgs, 758 unsigned numPlaceArgs, bool ParenTypeId, Expr *arraySize, 759 CXXConstructorDecl *constructor, bool initializer, 760 Expr **constructorArgs, unsigned numConsArgs, 761 FunctionDecl *operatorDelete, QualType ty, 762 SourceLocation startLoc, SourceLocation endLoc); 763 ~CXXNewExpr() { 764 delete[] SubExprs; 765 } 766 767 QualType getAllocatedType() const { 768 assert(getType()->isPointerType()); 769 return getType()->getAs<PointerType>()->getPointeeType(); 770 } 771 772 FunctionDecl *getOperatorNew() const { return OperatorNew; } 773 FunctionDecl *getOperatorDelete() const { return OperatorDelete; } 774 CXXConstructorDecl *getConstructor() const { return Constructor; } 775 776 bool isArray() const { return Array; } 777 Expr *getArraySize() { 778 return Array ? cast<Expr>(SubExprs[0]) : 0; 779 } 780 const Expr *getArraySize() const { 781 return Array ? cast<Expr>(SubExprs[0]) : 0; 782 } 783 784 unsigned getNumPlacementArgs() const { return NumPlacementArgs; } 785 Expr *getPlacementArg(unsigned i) { 786 assert(i < NumPlacementArgs && "Index out of range"); 787 return cast<Expr>(SubExprs[Array + i]); 788 } 789 const Expr *getPlacementArg(unsigned i) const { 790 assert(i < NumPlacementArgs && "Index out of range"); 791 return cast<Expr>(SubExprs[Array + i]); 792 } 793 794 bool isGlobalNew() const { return GlobalNew; } 795 bool isParenTypeId() const { return ParenTypeId; } 796 bool hasInitializer() const { return Initializer; } 797 798 unsigned getNumConstructorArgs() const { return NumConstructorArgs; } 799 Expr *getConstructorArg(unsigned i) { 800 assert(i < NumConstructorArgs && "Index out of range"); 801 return cast<Expr>(SubExprs[Array + NumPlacementArgs + i]); 802 } 803 const Expr *getConstructorArg(unsigned i) const { 804 assert(i < NumConstructorArgs && "Index out of range"); 805 return cast<Expr>(SubExprs[Array + NumPlacementArgs + i]); 806 } 807 808 typedef ExprIterator arg_iterator; 809 typedef ConstExprIterator const_arg_iterator; 810 811 arg_iterator placement_arg_begin() { 812 return SubExprs + Array; 813 } 814 arg_iterator placement_arg_end() { 815 return SubExprs + Array + getNumPlacementArgs(); 816 } 817 const_arg_iterator placement_arg_begin() const { 818 return SubExprs + Array; 819 } 820 const_arg_iterator placement_arg_end() const { 821 return SubExprs + Array + getNumPlacementArgs(); 822 } 823 824 arg_iterator constructor_arg_begin() { 825 return SubExprs + Array + getNumPlacementArgs(); 826 } 827 arg_iterator constructor_arg_end() { 828 return SubExprs + Array + getNumPlacementArgs() + getNumConstructorArgs(); 829 } 830 const_arg_iterator constructor_arg_begin() const { 831 return SubExprs + Array + getNumPlacementArgs(); 832 } 833 const_arg_iterator constructor_arg_end() const { 834 return SubExprs + Array + getNumPlacementArgs() + getNumConstructorArgs(); 835 } 836 837 virtual SourceRange getSourceRange() const { 838 return SourceRange(StartLoc, EndLoc); 839 } 840 841 static bool classof(const Stmt *T) { 842 return T->getStmtClass() == CXXNewExprClass; 843 } 844 static bool classof(const CXXNewExpr *) { return true; } 845 846 // Iterators 847 virtual child_iterator child_begin(); 848 virtual child_iterator child_end(); 849}; 850 851/// CXXDeleteExpr - A delete expression for memory deallocation and destructor 852/// calls, e.g. "delete[] pArray". 853class CXXDeleteExpr : public Expr { 854 // Is this a forced global delete, i.e. "::delete"? 855 bool GlobalDelete : 1; 856 // Is this the array form of delete, i.e. "delete[]"? 857 bool ArrayForm : 1; 858 // Points to the operator delete overload that is used. Could be a member. 859 FunctionDecl *OperatorDelete; 860 // The pointer expression to be deleted. 861 Stmt *Argument; 862 // Location of the expression. 863 SourceLocation Loc; 864public: 865 CXXDeleteExpr(QualType ty, bool globalDelete, bool arrayForm, 866 FunctionDecl *operatorDelete, Expr *arg, SourceLocation loc) 867 : Expr(CXXDeleteExprClass, ty, false, false), GlobalDelete(globalDelete), 868 ArrayForm(arrayForm), OperatorDelete(operatorDelete), Argument(arg), 869 Loc(loc) { } 870 871 bool isGlobalDelete() const { return GlobalDelete; } 872 bool isArrayForm() const { return ArrayForm; } 873 874 FunctionDecl *getOperatorDelete() const { return OperatorDelete; } 875 876 Expr *getArgument() { return cast<Expr>(Argument); } 877 const Expr *getArgument() const { return cast<Expr>(Argument); } 878 879 virtual SourceRange getSourceRange() const { 880 return SourceRange(Loc, Argument->getLocEnd()); 881 } 882 883 static bool classof(const Stmt *T) { 884 return T->getStmtClass() == CXXDeleteExprClass; 885 } 886 static bool classof(const CXXDeleteExpr *) { return true; } 887 888 // Iterators 889 virtual child_iterator child_begin(); 890 virtual child_iterator child_end(); 891}; 892 893/// \brief Represents a C++ pseudo-destructor (C++ [expr.pseudo]). 894/// 895/// Example: 896/// 897/// \code 898/// template<typename T> 899/// void destroy(T* ptr) { 900/// ptr->~T(); 901/// } 902/// \endcode 903/// 904/// When the template is parsed, the expression \c ptr->~T will be stored as 905/// a member reference expression. If it then instantiated with a scalar type 906/// as a template argument for T, the resulting expression will be a 907/// pseudo-destructor expression. 908class CXXPseudoDestructorExpr : public Expr { 909 /// \brief The base expression (that is being destroyed). 910 Stmt *Base; 911 912 /// \brief Whether the operator was an arrow ('->'); otherwise, it was a 913 /// period ('.'). 914 bool IsArrow : 1; 915 916 /// \brief The location of the '.' or '->' operator. 917 SourceLocation OperatorLoc; 918 919 /// \brief The nested-name-specifier that follows the operator, if present. 920 NestedNameSpecifier *Qualifier; 921 922 /// \brief The source range that covers the nested-name-specifier, if 923 /// present. 924 SourceRange QualifierRange; 925 926 /// \brief The type being destroyed. 927 QualType DestroyedType; 928 929 /// \brief The location of the type after the '~'. 930 SourceLocation DestroyedTypeLoc; 931 932public: 933 CXXPseudoDestructorExpr(ASTContext &Context, 934 Expr *Base, bool isArrow, SourceLocation OperatorLoc, 935 NestedNameSpecifier *Qualifier, 936 SourceRange QualifierRange, 937 QualType DestroyedType, 938 SourceLocation DestroyedTypeLoc) 939 : Expr(CXXPseudoDestructorExprClass, 940 Context.getPointerType(Context.getFunctionType(Context.VoidTy, 0, 0, 941 false, 0)), 942 /*isTypeDependent=*/false, 943 /*isValueDependent=*/Base->isValueDependent()), 944 Base(static_cast<Stmt *>(Base)), IsArrow(isArrow), 945 OperatorLoc(OperatorLoc), Qualifier(Qualifier), 946 QualifierRange(QualifierRange), DestroyedType(DestroyedType), 947 DestroyedTypeLoc(DestroyedTypeLoc) { } 948 949 void setBase(Expr *E) { Base = E; } 950 Expr *getBase() const { return cast<Expr>(Base); } 951 952 /// \brief Determines whether this member expression actually had 953 /// a C++ nested-name-specifier prior to the name of the member, e.g., 954 /// x->Base::foo. 955 bool hasQualifier() const { return Qualifier != 0; } 956 957 /// \brief If the member name was qualified, retrieves the source range of 958 /// the nested-name-specifier that precedes the member name. Otherwise, 959 /// returns an empty source range. 960 SourceRange getQualifierRange() const { return QualifierRange; } 961 962 /// \brief If the member name was qualified, retrieves the 963 /// nested-name-specifier that precedes the member name. Otherwise, returns 964 /// NULL. 965 NestedNameSpecifier *getQualifier() const { return Qualifier; } 966 967 /// \brief Determine whether this pseudo-destructor expression was written 968 /// using an '->' (otherwise, it used a '.'). 969 bool isArrow() const { return IsArrow; } 970 void setArrow(bool A) { IsArrow = A; } 971 972 /// \brief Retrieve the location of the '.' or '->' operator. 973 SourceLocation getOperatorLoc() const { return OperatorLoc; } 974 975 /// \brief Retrieve the type that is being destroyed. 976 QualType getDestroyedType() const { return DestroyedType; } 977 978 /// \brief Retrieve the location of the type being destroyed. 979 SourceLocation getDestroyedTypeLoc() const { return DestroyedTypeLoc; } 980 981 virtual SourceRange getSourceRange() const { 982 return SourceRange(Base->getLocStart(), DestroyedTypeLoc); 983 } 984 985 static bool classof(const Stmt *T) { 986 return T->getStmtClass() == CXXPseudoDestructorExprClass; 987 } 988 static bool classof(const CXXPseudoDestructorExpr *) { return true; } 989 990 // Iterators 991 virtual child_iterator child_begin(); 992 virtual child_iterator child_end(); 993}; 994 995/// UnaryTypeTraitExpr - A GCC or MS unary type trait, as used in the 996/// implementation of TR1/C++0x type trait templates. 997/// Example: 998/// __is_pod(int) == true 999/// __is_enum(std::string) == false 1000class UnaryTypeTraitExpr : public Expr { 1001 /// UTT - The trait. 1002 UnaryTypeTrait UTT; 1003 1004 /// Loc - The location of the type trait keyword. 1005 SourceLocation Loc; 1006 1007 /// RParen - The location of the closing paren. 1008 SourceLocation RParen; 1009 1010 /// QueriedType - The type we're testing. 1011 QualType QueriedType; 1012 1013public: 1014 UnaryTypeTraitExpr(SourceLocation loc, UnaryTypeTrait utt, QualType queried, 1015 SourceLocation rparen, QualType ty) 1016 : Expr(UnaryTypeTraitExprClass, ty, false, queried->isDependentType()), 1017 UTT(utt), Loc(loc), RParen(rparen), QueriedType(queried) { } 1018 1019 virtual SourceRange getSourceRange() const { return SourceRange(Loc, RParen);} 1020 1021 UnaryTypeTrait getTrait() const { return UTT; } 1022 1023 QualType getQueriedType() const { return QueriedType; } 1024 1025 bool EvaluateTrait(ASTContext&) const; 1026 1027 static bool classof(const Stmt *T) { 1028 return T->getStmtClass() == UnaryTypeTraitExprClass; 1029 } 1030 static bool classof(const UnaryTypeTraitExpr *) { return true; } 1031 1032 // Iterators 1033 virtual child_iterator child_begin(); 1034 virtual child_iterator child_end(); 1035}; 1036 1037/// \brief A reference to a name which we were able to look up during 1038/// parsing but could not resolve to a specific declaration. This 1039/// arises in several ways: 1040/// * we might be waiting for argument-dependent lookup 1041/// * the name might resolve to an overloaded function 1042/// and eventually: 1043/// * the lookup might have included a function template 1044/// These never include UnresolvedUsingValueDecls, which are always 1045/// class members and therefore appear only in 1046/// UnresolvedMemberLookupExprs. 1047class UnresolvedLookupExpr : public Expr { 1048 /// The results. These are undesugared, which is to say, they may 1049 /// include UsingShadowDecls. 1050 UnresolvedSet Results; 1051 1052 /// The name declared. 1053 DeclarationName Name; 1054 1055 /// The qualifier given, if any. 1056 NestedNameSpecifier *Qualifier; 1057 1058 /// The source range of the nested name specifier. 1059 SourceRange QualifierRange; 1060 1061 /// The location of the name. 1062 SourceLocation NameLoc; 1063 1064 /// True if these lookup results should be extended by 1065 /// argument-dependent lookup if this is the operand of a function 1066 /// call. 1067 bool RequiresADL; 1068 1069 /// True if these lookup results are overloaded. This is pretty 1070 /// trivially rederivable if we urgently need to kill this field. 1071 bool Overloaded; 1072 1073 /// True if the name looked up had explicit template arguments. 1074 /// This requires all the results to be function templates. 1075 bool HasExplicitTemplateArgs; 1076 1077 UnresolvedLookupExpr(QualType T, bool Dependent, 1078 NestedNameSpecifier *Qualifier, SourceRange QRange, 1079 DeclarationName Name, SourceLocation NameLoc, 1080 bool RequiresADL, bool Overloaded, bool HasTemplateArgs) 1081 : Expr(UnresolvedLookupExprClass, T, Dependent, Dependent), 1082 Name(Name), Qualifier(Qualifier), QualifierRange(QRange), 1083 NameLoc(NameLoc), RequiresADL(RequiresADL), Overloaded(Overloaded), 1084 HasExplicitTemplateArgs(HasTemplateArgs) 1085 {} 1086 1087public: 1088 static UnresolvedLookupExpr *Create(ASTContext &C, 1089 bool Dependent, 1090 NestedNameSpecifier *Qualifier, 1091 SourceRange QualifierRange, 1092 DeclarationName Name, 1093 SourceLocation NameLoc, 1094 bool ADL, bool Overloaded) { 1095 return new(C) UnresolvedLookupExpr(Dependent ? C.DependentTy : C.OverloadTy, 1096 Dependent, Qualifier, QualifierRange, 1097 Name, NameLoc, ADL, Overloaded, false); 1098 } 1099 1100 static UnresolvedLookupExpr *Create(ASTContext &C, 1101 bool Dependent, 1102 NestedNameSpecifier *Qualifier, 1103 SourceRange QualifierRange, 1104 DeclarationName Name, 1105 SourceLocation NameLoc, 1106 bool ADL, 1107 const TemplateArgumentListInfo &Args); 1108 1109 /// Computes whether an unresolved lookup on the given declarations 1110 /// and optional template arguments is type- and value-dependent. 1111 static bool ComputeDependence(NamedDecl * const *Begin, 1112 NamedDecl * const *End, 1113 const TemplateArgumentListInfo *Args); 1114 1115 void addDecl(NamedDecl *Decl) { 1116 Results.addDecl(Decl); 1117 } 1118 1119 typedef UnresolvedSet::iterator decls_iterator; 1120 decls_iterator decls_begin() const { return Results.begin(); } 1121 decls_iterator decls_end() const { return Results.end(); } 1122 1123 /// True if this declaration should be extended by 1124 /// argument-dependent lookup. 1125 bool requiresADL() const { return RequiresADL; } 1126 1127 /// True if this lookup is overloaded. 1128 bool isOverloaded() const { return Overloaded; } 1129 1130 /// Fetches the name looked up. 1131 DeclarationName getName() const { return Name; } 1132 1133 /// Gets the location of the name. 1134 SourceLocation getNameLoc() const { return NameLoc; } 1135 1136 /// Fetches the nested-name qualifier, if one was given. 1137 NestedNameSpecifier *getQualifier() const { return Qualifier; } 1138 1139 /// Fetches the range of the nested-name qualifier. 1140 SourceRange getQualifierRange() const { return QualifierRange; } 1141 1142 /// Determines whether this lookup had explicit template arguments. 1143 bool hasExplicitTemplateArgs() const { return HasExplicitTemplateArgs; } 1144 1145 // Note that, inconsistently with the explicit-template-argument AST 1146 // nodes, users are *forbidden* from calling these methods on objects 1147 // without explicit template arguments. 1148 1149 /// Gets a reference to the explicit template argument list. 1150 const ExplicitTemplateArgumentList &getExplicitTemplateArgs() const { 1151 assert(hasExplicitTemplateArgs()); 1152 return *reinterpret_cast<const ExplicitTemplateArgumentList*>(this + 1); 1153 } 1154 1155 /// \brief Copies the template arguments (if present) into the given 1156 /// structure. 1157 void copyTemplateArgumentsInto(TemplateArgumentListInfo &List) const { 1158 getExplicitTemplateArgs().copyInto(List); 1159 } 1160 1161 SourceLocation getLAngleLoc() const { 1162 return getExplicitTemplateArgs().LAngleLoc; 1163 } 1164 1165 SourceLocation getRAngleLoc() const { 1166 return getExplicitTemplateArgs().RAngleLoc; 1167 } 1168 1169 TemplateArgumentLoc const *getTemplateArgs() const { 1170 return getExplicitTemplateArgs().getTemplateArgs(); 1171 } 1172 1173 unsigned getNumTemplateArgs() const { 1174 return getExplicitTemplateArgs().NumTemplateArgs; 1175 } 1176 1177 virtual SourceRange getSourceRange() const { 1178 SourceRange Range(NameLoc); 1179 if (Qualifier) Range.setBegin(QualifierRange.getBegin()); 1180 if (hasExplicitTemplateArgs()) Range.setEnd(getRAngleLoc()); 1181 return Range; 1182 } 1183 1184 virtual StmtIterator child_begin(); 1185 virtual StmtIterator child_end(); 1186 1187 static bool classof(const Stmt *T) { 1188 return T->getStmtClass() == UnresolvedLookupExprClass; 1189 } 1190 static bool classof(const UnresolvedLookupExpr *) { return true; } 1191}; 1192 1193/// \brief A qualified reference to a name whose declaration cannot 1194/// yet be resolved. 1195/// 1196/// DependentScopeDeclRefExpr is similar to DeclRefExpr in that 1197/// it expresses a reference to a declaration such as 1198/// X<T>::value. The difference, however, is that an 1199/// DependentScopeDeclRefExpr node is used only within C++ templates when 1200/// the qualification (e.g., X<T>::) refers to a dependent type. In 1201/// this case, X<T>::value cannot resolve to a declaration because the 1202/// declaration will differ from on instantiation of X<T> to the 1203/// next. Therefore, DependentScopeDeclRefExpr keeps track of the 1204/// qualifier (X<T>::) and the name of the entity being referenced 1205/// ("value"). Such expressions will instantiate to a DeclRefExpr once the 1206/// declaration can be found. 1207class DependentScopeDeclRefExpr : public Expr { 1208 /// The name of the entity we will be referencing. 1209 DeclarationName Name; 1210 1211 /// Location of the name of the declaration we're referencing. 1212 SourceLocation Loc; 1213 1214 /// QualifierRange - The source range that covers the 1215 /// nested-name-specifier. 1216 SourceRange QualifierRange; 1217 1218 /// \brief The nested-name-specifier that qualifies this unresolved 1219 /// declaration name. 1220 NestedNameSpecifier *Qualifier; 1221 1222 /// \brief Whether the name includes explicit template arguments. 1223 bool HasExplicitTemplateArgs; 1224 1225 DependentScopeDeclRefExpr(QualType T, 1226 NestedNameSpecifier *Qualifier, 1227 SourceRange QualifierRange, 1228 DeclarationName Name, 1229 SourceLocation NameLoc, 1230 bool HasExplicitTemplateArgs) 1231 : Expr(DependentScopeDeclRefExprClass, T, true, true), 1232 Name(Name), Loc(NameLoc), 1233 QualifierRange(QualifierRange), Qualifier(Qualifier), 1234 HasExplicitTemplateArgs(HasExplicitTemplateArgs) 1235 {} 1236 1237public: 1238 static DependentScopeDeclRefExpr *Create(ASTContext &C, 1239 NestedNameSpecifier *Qualifier, 1240 SourceRange QualifierRange, 1241 DeclarationName Name, 1242 SourceLocation NameLoc, 1243 const TemplateArgumentListInfo *TemplateArgs = 0); 1244 1245 /// \brief Retrieve the name that this expression refers to. 1246 DeclarationName getDeclName() const { return Name; } 1247 1248 /// \brief Retrieve the location of the name within the expression. 1249 SourceLocation getLocation() const { return Loc; } 1250 1251 /// \brief Retrieve the source range of the nested-name-specifier. 1252 SourceRange getQualifierRange() const { return QualifierRange; } 1253 1254 /// \brief Retrieve the nested-name-specifier that qualifies this 1255 /// declaration. 1256 NestedNameSpecifier *getQualifier() const { return Qualifier; } 1257 1258 /// Determines whether this lookup had explicit template arguments. 1259 bool hasExplicitTemplateArgs() const { return HasExplicitTemplateArgs; } 1260 1261 // Note that, inconsistently with the explicit-template-argument AST 1262 // nodes, users are *forbidden* from calling these methods on objects 1263 // without explicit template arguments. 1264 1265 /// Gets a reference to the explicit template argument list. 1266 const ExplicitTemplateArgumentList &getExplicitTemplateArgs() const { 1267 assert(hasExplicitTemplateArgs()); 1268 return *reinterpret_cast<const ExplicitTemplateArgumentList*>(this + 1); 1269 } 1270 1271 /// \brief Copies the template arguments (if present) into the given 1272 /// structure. 1273 void copyTemplateArgumentsInto(TemplateArgumentListInfo &List) const { 1274 getExplicitTemplateArgs().copyInto(List); 1275 } 1276 1277 SourceLocation getLAngleLoc() const { 1278 return getExplicitTemplateArgs().LAngleLoc; 1279 } 1280 1281 SourceLocation getRAngleLoc() const { 1282 return getExplicitTemplateArgs().RAngleLoc; 1283 } 1284 1285 TemplateArgumentLoc const *getTemplateArgs() const { 1286 return getExplicitTemplateArgs().getTemplateArgs(); 1287 } 1288 1289 unsigned getNumTemplateArgs() const { 1290 return getExplicitTemplateArgs().NumTemplateArgs; 1291 } 1292 1293 virtual SourceRange getSourceRange() const { 1294 SourceRange Range(QualifierRange.getBegin(), getLocation()); 1295 if (hasExplicitTemplateArgs()) 1296 Range.setEnd(getRAngleLoc()); 1297 return Range; 1298 } 1299 1300 static bool classof(const Stmt *T) { 1301 return T->getStmtClass() == DependentScopeDeclRefExprClass; 1302 } 1303 static bool classof(const DependentScopeDeclRefExpr *) { return true; } 1304 1305 virtual StmtIterator child_begin(); 1306 virtual StmtIterator child_end(); 1307}; 1308 1309class CXXExprWithTemporaries : public Expr { 1310 Stmt *SubExpr; 1311 1312 CXXTemporary **Temps; 1313 unsigned NumTemps; 1314 1315 CXXExprWithTemporaries(Expr *SubExpr, CXXTemporary **Temps, 1316 unsigned NumTemps); 1317 ~CXXExprWithTemporaries(); 1318 1319protected: 1320 virtual void DoDestroy(ASTContext &C); 1321 1322public: 1323 static CXXExprWithTemporaries *Create(ASTContext &C, Expr *SubExpr, 1324 CXXTemporary **Temps, 1325 unsigned NumTemps); 1326 1327 unsigned getNumTemporaries() const { return NumTemps; } 1328 CXXTemporary *getTemporary(unsigned i) { 1329 assert(i < NumTemps && "Index out of range"); 1330 return Temps[i]; 1331 } 1332 const CXXTemporary *getTemporary(unsigned i) const { 1333 return const_cast<CXXExprWithTemporaries*>(this)->getTemporary(i); 1334 } 1335 1336 Expr *getSubExpr() { return cast<Expr>(SubExpr); } 1337 const Expr *getSubExpr() const { return cast<Expr>(SubExpr); } 1338 void setSubExpr(Expr *E) { SubExpr = E; } 1339 1340 virtual SourceRange getSourceRange() const { 1341 return SubExpr->getSourceRange(); 1342 } 1343 1344 // Implement isa/cast/dyncast/etc. 1345 static bool classof(const Stmt *T) { 1346 return T->getStmtClass() == CXXExprWithTemporariesClass; 1347 } 1348 static bool classof(const CXXExprWithTemporaries *) { return true; } 1349 1350 // Iterators 1351 virtual child_iterator child_begin(); 1352 virtual child_iterator child_end(); 1353}; 1354 1355/// \brief Describes an explicit type conversion that uses functional 1356/// notion but could not be resolved because one or more arguments are 1357/// type-dependent. 1358/// 1359/// The explicit type conversions expressed by 1360/// CXXUnresolvedConstructExpr have the form \c T(a1, a2, ..., aN), 1361/// where \c T is some type and \c a1, a2, ..., aN are values, and 1362/// either \C T is a dependent type or one or more of the \c a's is 1363/// type-dependent. For example, this would occur in a template such 1364/// as: 1365/// 1366/// \code 1367/// template<typename T, typename A1> 1368/// inline T make_a(const A1& a1) { 1369/// return T(a1); 1370/// } 1371/// \endcode 1372/// 1373/// When the returned expression is instantiated, it may resolve to a 1374/// constructor call, conversion function call, or some kind of type 1375/// conversion. 1376class CXXUnresolvedConstructExpr : public Expr { 1377 /// \brief The starting location of the type 1378 SourceLocation TyBeginLoc; 1379 1380 /// \brief The type being constructed. 1381 QualType Type; 1382 1383 /// \brief The location of the left parentheses ('('). 1384 SourceLocation LParenLoc; 1385 1386 /// \brief The location of the right parentheses (')'). 1387 SourceLocation RParenLoc; 1388 1389 /// \brief The number of arguments used to construct the type. 1390 unsigned NumArgs; 1391 1392 CXXUnresolvedConstructExpr(SourceLocation TyBegin, 1393 QualType T, 1394 SourceLocation LParenLoc, 1395 Expr **Args, 1396 unsigned NumArgs, 1397 SourceLocation RParenLoc); 1398 1399public: 1400 static CXXUnresolvedConstructExpr *Create(ASTContext &C, 1401 SourceLocation TyBegin, 1402 QualType T, 1403 SourceLocation LParenLoc, 1404 Expr **Args, 1405 unsigned NumArgs, 1406 SourceLocation RParenLoc); 1407 1408 /// \brief Retrieve the source location where the type begins. 1409 SourceLocation getTypeBeginLoc() const { return TyBeginLoc; } 1410 void setTypeBeginLoc(SourceLocation L) { TyBeginLoc = L; } 1411 1412 /// \brief Retrieve the type that is being constructed, as specified 1413 /// in the source code. 1414 QualType getTypeAsWritten() const { return Type; } 1415 void setTypeAsWritten(QualType T) { Type = T; } 1416 1417 /// \brief Retrieve the location of the left parentheses ('(') that 1418 /// precedes the argument list. 1419 SourceLocation getLParenLoc() const { return LParenLoc; } 1420 void setLParenLoc(SourceLocation L) { LParenLoc = L; } 1421 1422 /// \brief Retrieve the location of the right parentheses (')') that 1423 /// follows the argument list. 1424 SourceLocation getRParenLoc() const { return RParenLoc; } 1425 void setRParenLoc(SourceLocation L) { RParenLoc = L; } 1426 1427 /// \brief Retrieve the number of arguments. 1428 unsigned arg_size() const { return NumArgs; } 1429 1430 typedef Expr** arg_iterator; 1431 arg_iterator arg_begin() { return reinterpret_cast<Expr**>(this + 1); } 1432 arg_iterator arg_end() { return arg_begin() + NumArgs; } 1433 1434 Expr *getArg(unsigned I) { 1435 assert(I < NumArgs && "Argument index out-of-range"); 1436 return *(arg_begin() + I); 1437 } 1438 1439 virtual SourceRange getSourceRange() const { 1440 return SourceRange(TyBeginLoc, RParenLoc); 1441 } 1442 static bool classof(const Stmt *T) { 1443 return T->getStmtClass() == CXXUnresolvedConstructExprClass; 1444 } 1445 static bool classof(const CXXUnresolvedConstructExpr *) { return true; } 1446 1447 // Iterators 1448 virtual child_iterator child_begin(); 1449 virtual child_iterator child_end(); 1450}; 1451 1452/// \brief Represents a C++ member access expression where the actual 1453/// member referenced could not be resolved because the base 1454/// expression or the member name was dependent. 1455/// 1456/// Like UnresolvedMemberExprs, these can be either implicit or 1457/// explicit accesses. It is only possible to get one of these with 1458/// an implicit access if a qualifier is provided. 1459class CXXDependentScopeMemberExpr : public Expr { 1460 /// \brief The expression for the base pointer or class reference, 1461 /// e.g., the \c x in x.f. Can be null in implicit accesses. 1462 Stmt *Base; 1463 1464 /// \brief The type of the base expression. Never null, even for 1465 /// implicit accesses. 1466 QualType BaseType; 1467 1468 /// \brief Whether this member expression used the '->' operator or 1469 /// the '.' operator. 1470 bool IsArrow : 1; 1471 1472 /// \brief Whether this member expression has explicitly-specified template 1473 /// arguments. 1474 bool HasExplicitTemplateArgs : 1; 1475 1476 /// \brief The location of the '->' or '.' operator. 1477 SourceLocation OperatorLoc; 1478 1479 /// \brief The nested-name-specifier that precedes the member name, if any. 1480 NestedNameSpecifier *Qualifier; 1481 1482 /// \brief The source range covering the nested name specifier. 1483 SourceRange QualifierRange; 1484 1485 /// \brief In a qualified member access expression such as t->Base::f, this 1486 /// member stores the resolves of name lookup in the context of the member 1487 /// access expression, to be used at instantiation time. 1488 /// 1489 /// FIXME: This member, along with the Qualifier and QualifierRange, could 1490 /// be stuck into a structure that is optionally allocated at the end of 1491 /// the CXXDependentScopeMemberExpr, to save space in the common case. 1492 NamedDecl *FirstQualifierFoundInScope; 1493 1494 /// \brief The member to which this member expression refers, which 1495 /// can be name, overloaded operator, or destructor. 1496 /// FIXME: could also be a template-id 1497 DeclarationName Member; 1498 1499 /// \brief The location of the member name. 1500 SourceLocation MemberLoc; 1501 1502 /// \brief Retrieve the explicit template argument list that followed the 1503 /// member template name, if any. 1504 ExplicitTemplateArgumentList *getExplicitTemplateArgumentList() { 1505 assert(HasExplicitTemplateArgs); 1506 return reinterpret_cast<ExplicitTemplateArgumentList *>(this + 1); 1507 } 1508 1509 /// \brief Retrieve the explicit template argument list that followed the 1510 /// member template name, if any. 1511 const ExplicitTemplateArgumentList *getExplicitTemplateArgumentList() const { 1512 return const_cast<CXXDependentScopeMemberExpr *>(this) 1513 ->getExplicitTemplateArgumentList(); 1514 } 1515 1516 CXXDependentScopeMemberExpr(ASTContext &C, 1517 Expr *Base, QualType BaseType, bool IsArrow, 1518 SourceLocation OperatorLoc, 1519 NestedNameSpecifier *Qualifier, 1520 SourceRange QualifierRange, 1521 NamedDecl *FirstQualifierFoundInScope, 1522 DeclarationName Member, 1523 SourceLocation MemberLoc, 1524 const TemplateArgumentListInfo *TemplateArgs); 1525 1526public: 1527 CXXDependentScopeMemberExpr(ASTContext &C, 1528 Expr *Base, QualType BaseType, 1529 bool IsArrow, 1530 SourceLocation OperatorLoc, 1531 NestedNameSpecifier *Qualifier, 1532 SourceRange QualifierRange, 1533 NamedDecl *FirstQualifierFoundInScope, 1534 DeclarationName Member, 1535 SourceLocation MemberLoc) 1536 : Expr(CXXDependentScopeMemberExprClass, C.DependentTy, true, true), 1537 Base(Base), BaseType(BaseType), IsArrow(IsArrow), 1538 HasExplicitTemplateArgs(false), OperatorLoc(OperatorLoc), 1539 Qualifier(Qualifier), QualifierRange(QualifierRange), 1540 FirstQualifierFoundInScope(FirstQualifierFoundInScope), 1541 Member(Member), MemberLoc(MemberLoc) { } 1542 1543 static CXXDependentScopeMemberExpr * 1544 Create(ASTContext &C, 1545 Expr *Base, QualType BaseType, bool IsArrow, 1546 SourceLocation OperatorLoc, 1547 NestedNameSpecifier *Qualifier, 1548 SourceRange QualifierRange, 1549 NamedDecl *FirstQualifierFoundInScope, 1550 DeclarationName Member, 1551 SourceLocation MemberLoc, 1552 const TemplateArgumentListInfo *TemplateArgs); 1553 1554 /// \brief True if this is an implicit access, i.e. one in which the 1555 /// member being accessed was not written in the source. The source 1556 /// location of the operator is invalid in this case. 1557 bool isImplicitAccess() const { return Base == 0; } 1558 1559 /// \brief Retrieve the base object of this member expressions, 1560 /// e.g., the \c x in \c x.m. 1561 Expr *getBase() const { 1562 assert(!isImplicitAccess()); 1563 return cast<Expr>(Base); 1564 } 1565 void setBase(Expr *E) { Base = E; } 1566 1567 QualType getBaseType() const { return BaseType; } 1568 1569 /// \brief Determine whether this member expression used the '->' 1570 /// operator; otherwise, it used the '.' operator. 1571 bool isArrow() const { return IsArrow; } 1572 void setArrow(bool A) { IsArrow = A; } 1573 1574 /// \brief Retrieve the location of the '->' or '.' operator. 1575 SourceLocation getOperatorLoc() const { return OperatorLoc; } 1576 void setOperatorLoc(SourceLocation L) { OperatorLoc = L; } 1577 1578 /// \brief Retrieve the nested-name-specifier that qualifies the member 1579 /// name. 1580 NestedNameSpecifier *getQualifier() const { return Qualifier; } 1581 1582 /// \brief Retrieve the source range covering the nested-name-specifier 1583 /// that qualifies the member name. 1584 SourceRange getQualifierRange() const { return QualifierRange; } 1585 1586 /// \brief Retrieve the first part of the nested-name-specifier that was 1587 /// found in the scope of the member access expression when the member access 1588 /// was initially parsed. 1589 /// 1590 /// This function only returns a useful result when member access expression 1591 /// uses a qualified member name, e.g., "x.Base::f". Here, the declaration 1592 /// returned by this function describes what was found by unqualified name 1593 /// lookup for the identifier "Base" within the scope of the member access 1594 /// expression itself. At template instantiation time, this information is 1595 /// combined with the results of name lookup into the type of the object 1596 /// expression itself (the class type of x). 1597 NamedDecl *getFirstQualifierFoundInScope() const { 1598 return FirstQualifierFoundInScope; 1599 } 1600 1601 /// \brief Retrieve the name of the member that this expression 1602 /// refers to. 1603 DeclarationName getMember() const { return Member; } 1604 void setMember(DeclarationName N) { Member = N; } 1605 1606 // \brief Retrieve the location of the name of the member that this 1607 // expression refers to. 1608 SourceLocation getMemberLoc() const { return MemberLoc; } 1609 void setMemberLoc(SourceLocation L) { MemberLoc = L; } 1610 1611 /// \brief Determines whether this member expression actually had a C++ 1612 /// template argument list explicitly specified, e.g., x.f<int>. 1613 bool hasExplicitTemplateArgs() const { 1614 return HasExplicitTemplateArgs; 1615 } 1616 1617 /// \brief Copies the template arguments (if present) into the given 1618 /// structure. 1619 void copyTemplateArgumentsInto(TemplateArgumentListInfo &List) const { 1620 assert(HasExplicitTemplateArgs); 1621 getExplicitTemplateArgumentList()->copyInto(List); 1622 } 1623 1624 /// \brief Retrieve the location of the left angle bracket following the 1625 /// member name ('<'), if any. 1626 SourceLocation getLAngleLoc() const { 1627 assert(HasExplicitTemplateArgs); 1628 return getExplicitTemplateArgumentList()->LAngleLoc; 1629 } 1630 1631 /// \brief Retrieve the template arguments provided as part of this 1632 /// template-id. 1633 const TemplateArgumentLoc *getTemplateArgs() const { 1634 assert(HasExplicitTemplateArgs); 1635 return getExplicitTemplateArgumentList()->getTemplateArgs(); 1636 } 1637 1638 /// \brief Retrieve the number of template arguments provided as part of this 1639 /// template-id. 1640 unsigned getNumTemplateArgs() const { 1641 assert(HasExplicitTemplateArgs); 1642 return getExplicitTemplateArgumentList()->NumTemplateArgs; 1643 } 1644 1645 /// \brief Retrieve the location of the right angle bracket following the 1646 /// template arguments ('>'). 1647 SourceLocation getRAngleLoc() const { 1648 assert(HasExplicitTemplateArgs); 1649 return getExplicitTemplateArgumentList()->RAngleLoc; 1650 } 1651 1652 virtual SourceRange getSourceRange() const { 1653 SourceRange Range; 1654 if (!isImplicitAccess()) 1655 Range.setBegin(Base->getSourceRange().getBegin()); 1656 else if (getQualifier()) 1657 Range.setBegin(getQualifierRange().getBegin()); 1658 else 1659 Range.setBegin(MemberLoc); 1660 1661 if (hasExplicitTemplateArgs()) 1662 Range.setEnd(getRAngleLoc()); 1663 else 1664 Range.setEnd(MemberLoc); 1665 return Range; 1666 } 1667 1668 static bool classof(const Stmt *T) { 1669 return T->getStmtClass() == CXXDependentScopeMemberExprClass; 1670 } 1671 static bool classof(const CXXDependentScopeMemberExpr *) { return true; } 1672 1673 // Iterators 1674 virtual child_iterator child_begin(); 1675 virtual child_iterator child_end(); 1676}; 1677 1678/// \brief Represents a C++ member access expression for which lookup 1679/// produced a set of overloaded functions. 1680/// 1681/// The member access may be explicit or implicit: 1682/// struct A { 1683/// int a, b; 1684/// int explicitAccess() { return this->a + this->A::b; } 1685/// int implicitAccess() { return a + A::b; } 1686/// }; 1687/// 1688/// In the final AST, an explicit access always becomes a MemberExpr. 1689/// An implicit access may become either a MemberExpr or a 1690/// DeclRefExpr, depending on whether the member is static. 1691class UnresolvedMemberExpr : public Expr { 1692 /// The results. These are undesugared, which is to say, they may 1693 /// include UsingShadowDecls. 1694 UnresolvedSet Results; 1695 1696 /// \brief The expression for the base pointer or class reference, 1697 /// e.g., the \c x in x.f. This can be null if this is an 'unbased' 1698 /// member expression 1699 Stmt *Base; 1700 1701 /// \brief The type of the base expression; never null. 1702 QualType BaseType; 1703 1704 /// \brief Whether this member expression used the '->' operator or 1705 /// the '.' operator. 1706 bool IsArrow : 1; 1707 1708 /// \brief Whether the lookup results contain an unresolved using 1709 /// declaration. 1710 bool HasUnresolvedUsing : 1; 1711 1712 /// \brief Whether this member expression has explicitly-specified template 1713 /// arguments. 1714 bool HasExplicitTemplateArgs : 1; 1715 1716 /// \brief The location of the '->' or '.' operator. 1717 SourceLocation OperatorLoc; 1718 1719 /// \brief The nested-name-specifier that precedes the member name, if any. 1720 NestedNameSpecifier *Qualifier; 1721 1722 /// \brief The source range covering the nested name specifier. 1723 SourceRange QualifierRange; 1724 1725 /// \brief The member to which this member expression refers, which 1726 /// can be a name or an overloaded operator. 1727 DeclarationName MemberName; 1728 1729 /// \brief The location of the member name. 1730 SourceLocation MemberLoc; 1731 1732 /// \brief Retrieve the explicit template argument list that followed the 1733 /// member template name. 1734 ExplicitTemplateArgumentList *getExplicitTemplateArgs() { 1735 assert(HasExplicitTemplateArgs); 1736 return reinterpret_cast<ExplicitTemplateArgumentList *>(this + 1); 1737 } 1738 1739 /// \brief Retrieve the explicit template argument list that followed the 1740 /// member template name, if any. 1741 const ExplicitTemplateArgumentList *getExplicitTemplateArgs() const { 1742 return const_cast<UnresolvedMemberExpr*>(this)->getExplicitTemplateArgs(); 1743 } 1744 1745 UnresolvedMemberExpr(QualType T, bool Dependent, 1746 bool HasUnresolvedUsing, 1747 Expr *Base, QualType BaseType, bool IsArrow, 1748 SourceLocation OperatorLoc, 1749 NestedNameSpecifier *Qualifier, 1750 SourceRange QualifierRange, 1751 DeclarationName Member, 1752 SourceLocation MemberLoc, 1753 const TemplateArgumentListInfo *TemplateArgs); 1754 1755public: 1756 static UnresolvedMemberExpr * 1757 Create(ASTContext &C, bool Dependent, bool HasUnresolvedUsing, 1758 Expr *Base, QualType BaseType, bool IsArrow, 1759 SourceLocation OperatorLoc, 1760 NestedNameSpecifier *Qualifier, 1761 SourceRange QualifierRange, 1762 DeclarationName Member, 1763 SourceLocation MemberLoc, 1764 const TemplateArgumentListInfo *TemplateArgs); 1765 1766 /// Adds a declaration to the unresolved set. By assumption, all of 1767 /// these happen at initialization time and properties like 1768 /// 'Dependent' and 'HasUnresolvedUsing' take them into account. 1769 void addDecl(NamedDecl *Decl) { 1770 Results.addDecl(Decl); 1771 } 1772 1773 typedef UnresolvedSet::iterator decls_iterator; 1774 decls_iterator decls_begin() const { return Results.begin(); } 1775 decls_iterator decls_end() const { return Results.end(); } 1776 1777 unsigned getNumDecls() const { return Results.size(); } 1778 1779 /// \brief True if this is an implicit access, i.e. one in which the 1780 /// member being accessed was not written in the source. The source 1781 /// location of the operator is invalid in this case. 1782 bool isImplicitAccess() const { return Base == 0; } 1783 1784 /// \brief Retrieve the base object of this member expressions, 1785 /// e.g., the \c x in \c x.m. 1786 Expr *getBase() { 1787 assert(!isImplicitAccess()); 1788 return cast<Expr>(Base); 1789 } 1790 void setBase(Expr *E) { Base = E; } 1791 1792 QualType getBaseType() const { return BaseType; } 1793 1794 /// \brief Determine whether this member expression used the '->' 1795 /// operator; otherwise, it used the '.' operator. 1796 bool isArrow() const { return IsArrow; } 1797 void setArrow(bool A) { IsArrow = A; } 1798 1799 /// \brief Retrieve the location of the '->' or '.' operator. 1800 SourceLocation getOperatorLoc() const { return OperatorLoc; } 1801 void setOperatorLoc(SourceLocation L) { OperatorLoc = L; } 1802 1803 /// \brief Retrieve the nested-name-specifier that qualifies the member 1804 /// name. 1805 NestedNameSpecifier *getQualifier() const { return Qualifier; } 1806 1807 /// \brief Retrieve the source range covering the nested-name-specifier 1808 /// that qualifies the member name. 1809 SourceRange getQualifierRange() const { return QualifierRange; } 1810 1811 /// \brief Retrieve the name of the member that this expression 1812 /// refers to. 1813 DeclarationName getMemberName() const { return MemberName; } 1814 void setMemberName(DeclarationName N) { MemberName = N; } 1815 1816 // \brief Retrieve the location of the name of the member that this 1817 // expression refers to. 1818 SourceLocation getMemberLoc() const { return MemberLoc; } 1819 void setMemberLoc(SourceLocation L) { MemberLoc = L; } 1820 1821 /// \brief Determines whether this member expression actually had a C++ 1822 /// template argument list explicitly specified, e.g., x.f<int>. 1823 bool hasExplicitTemplateArgs() const { 1824 return HasExplicitTemplateArgs; 1825 } 1826 1827 /// \brief Copies the template arguments into the given structure. 1828 void copyTemplateArgumentsInto(TemplateArgumentListInfo &List) const { 1829 getExplicitTemplateArgs()->copyInto(List); 1830 } 1831 1832 /// \brief Retrieve the location of the left angle bracket following 1833 /// the member name ('<'). 1834 SourceLocation getLAngleLoc() const { 1835 return getExplicitTemplateArgs()->LAngleLoc; 1836 } 1837 1838 /// \brief Retrieve the template arguments provided as part of this 1839 /// template-id. 1840 const TemplateArgumentLoc *getTemplateArgs() const { 1841 return getExplicitTemplateArgs()->getTemplateArgs(); 1842 } 1843 1844 /// \brief Retrieve the number of template arguments provided as 1845 /// part of this template-id. 1846 unsigned getNumTemplateArgs() const { 1847 return getExplicitTemplateArgs()->NumTemplateArgs; 1848 } 1849 1850 /// \brief Retrieve the location of the right angle bracket 1851 /// following the template arguments ('>'). 1852 SourceLocation getRAngleLoc() const { 1853 return getExplicitTemplateArgs()->RAngleLoc; 1854 } 1855 1856 virtual SourceRange getSourceRange() const { 1857 SourceRange Range; 1858 if (!isImplicitAccess()) 1859 Range.setBegin(Base->getSourceRange().getBegin()); 1860 else if (getQualifier()) 1861 Range.setBegin(getQualifierRange().getBegin()); 1862 else 1863 Range.setBegin(MemberLoc); 1864 1865 if (hasExplicitTemplateArgs()) 1866 Range.setEnd(getRAngleLoc()); 1867 else 1868 Range.setEnd(MemberLoc); 1869 return Range; 1870 } 1871 1872 static bool classof(const Stmt *T) { 1873 return T->getStmtClass() == UnresolvedMemberExprClass; 1874 } 1875 static bool classof(const UnresolvedMemberExpr *) { return true; } 1876 1877 // Iterators 1878 virtual child_iterator child_begin(); 1879 virtual child_iterator child_end(); 1880}; 1881 1882} // end namespace clang 1883 1884#endif 1885