ExprCXX.h revision 828a197317288e3333b0ce6f5cedadd036e3531f
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, false, false), 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, false, false), 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 bool Implicit : 1; 328 329public: 330 CXXThisExpr(SourceLocation L, QualType Type, bool isImplicit) 331 : Expr(CXXThisExprClass, Type, 332 // 'this' is type-dependent if the class type of the enclosing 333 // member function is dependent (C++ [temp.dep.expr]p2) 334 Type->isDependentType(), Type->isDependentType()), 335 Loc(L), Implicit(isImplicit) { } 336 337 virtual SourceRange getSourceRange() const { return SourceRange(Loc); } 338 339 bool isImplicit() const { return Implicit; } 340 void setImplicit(bool I) { Implicit = I; } 341 342 static bool classof(const Stmt *T) { 343 return T->getStmtClass() == CXXThisExprClass; 344 } 345 static bool classof(const CXXThisExpr *) { return true; } 346 347 // Iterators 348 virtual child_iterator child_begin(); 349 virtual child_iterator child_end(); 350}; 351 352/// CXXThrowExpr - [C++ 15] C++ Throw Expression. This handles 353/// 'throw' and 'throw' assignment-expression. When 354/// assignment-expression isn't present, Op will be null. 355/// 356class CXXThrowExpr : public Expr { 357 Stmt *Op; 358 SourceLocation ThrowLoc; 359public: 360 // Ty is the void type which is used as the result type of the 361 // exepression. The l is the location of the throw keyword. expr 362 // can by null, if the optional expression to throw isn't present. 363 CXXThrowExpr(Expr *expr, QualType Ty, SourceLocation l) : 364 Expr(CXXThrowExprClass, Ty, false, false), Op(expr), ThrowLoc(l) {} 365 const Expr *getSubExpr() const { return cast_or_null<Expr>(Op); } 366 Expr *getSubExpr() { return cast_or_null<Expr>(Op); } 367 void setSubExpr(Expr *E) { Op = E; } 368 369 SourceLocation getThrowLoc() const { return ThrowLoc; } 370 void setThrowLoc(SourceLocation L) { ThrowLoc = L; } 371 372 virtual SourceRange getSourceRange() const { 373 if (getSubExpr() == 0) 374 return SourceRange(ThrowLoc, ThrowLoc); 375 return SourceRange(ThrowLoc, getSubExpr()->getSourceRange().getEnd()); 376 } 377 378 static bool classof(const Stmt *T) { 379 return T->getStmtClass() == CXXThrowExprClass; 380 } 381 static bool classof(const CXXThrowExpr *) { return true; } 382 383 // Iterators 384 virtual child_iterator child_begin(); 385 virtual child_iterator child_end(); 386}; 387 388/// CXXDefaultArgExpr - C++ [dcl.fct.default]. This wraps up a 389/// function call argument that was created from the corresponding 390/// parameter's default argument, when the call did not explicitly 391/// supply arguments for all of the parameters. 392class CXXDefaultArgExpr : public Expr { 393 /// \brief The parameter whose default is being used. 394 /// 395 /// When the bit is set, the subexpression is stored after the 396 /// CXXDefaultArgExpr itself. When the bit is clear, the parameter's 397 /// actual default expression is the subexpression. 398 llvm::PointerIntPair<ParmVarDecl *, 1, bool> Param; 399 400 /// \brief The location where the default argument expression was used. 401 SourceLocation Loc; 402 403protected: 404 CXXDefaultArgExpr(StmtClass SC, SourceLocation Loc, ParmVarDecl *param) 405 : Expr(SC, 406 param->hasUnparsedDefaultArg() 407 ? param->getType().getNonReferenceType() 408 : param->getDefaultArg()->getType(), 409 false, false), 410 Param(param, false), Loc(Loc) { } 411 412 CXXDefaultArgExpr(StmtClass SC, SourceLocation Loc, ParmVarDecl *param, 413 Expr *SubExpr) 414 : Expr(SC, SubExpr->getType(), false, false), Param(param, true), Loc(Loc) 415 { 416 *reinterpret_cast<Expr **>(this + 1) = SubExpr; 417 } 418 419protected: 420 virtual void DoDestroy(ASTContext &C); 421 422public: 423 // Param is the parameter whose default argument is used by this 424 // expression. 425 static CXXDefaultArgExpr *Create(ASTContext &C, SourceLocation Loc, 426 ParmVarDecl *Param) { 427 return new (C) CXXDefaultArgExpr(CXXDefaultArgExprClass, Loc, Param); 428 } 429 430 // Param is the parameter whose default argument is used by this 431 // expression, and SubExpr is the expression that will actually be used. 432 static CXXDefaultArgExpr *Create(ASTContext &C, 433 SourceLocation Loc, 434 ParmVarDecl *Param, 435 Expr *SubExpr); 436 437 // Retrieve the parameter that the argument was created from. 438 const ParmVarDecl *getParam() const { return Param.getPointer(); } 439 ParmVarDecl *getParam() { return Param.getPointer(); } 440 441 // Retrieve the actual argument to the function call. 442 const Expr *getExpr() const { 443 if (Param.getInt()) 444 return *reinterpret_cast<Expr const * const*> (this + 1); 445 return getParam()->getDefaultArg(); 446 } 447 Expr *getExpr() { 448 if (Param.getInt()) 449 return *reinterpret_cast<Expr **> (this + 1); 450 return getParam()->getDefaultArg(); 451 } 452 453 /// \brief Retrieve the location where this default argument was actually 454 /// used. 455 SourceLocation getUsedLocation() const { return Loc; } 456 457 virtual SourceRange getSourceRange() const { 458 // Default argument expressions have no representation in the 459 // source, so they have an empty source range. 460 return SourceRange(); 461 } 462 463 static bool classof(const Stmt *T) { 464 return T->getStmtClass() == CXXDefaultArgExprClass; 465 } 466 static bool classof(const CXXDefaultArgExpr *) { return true; } 467 468 // Iterators 469 virtual child_iterator child_begin(); 470 virtual child_iterator child_end(); 471}; 472 473/// CXXTemporary - Represents a C++ temporary. 474class CXXTemporary { 475 /// Destructor - The destructor that needs to be called. 476 const CXXDestructorDecl *Destructor; 477 478 CXXTemporary(const CXXDestructorDecl *destructor) 479 : Destructor(destructor) { } 480 ~CXXTemporary() { } 481 482public: 483 static CXXTemporary *Create(ASTContext &C, 484 const CXXDestructorDecl *Destructor); 485 486 void Destroy(ASTContext &Ctx); 487 488 const CXXDestructorDecl *getDestructor() const { return Destructor; } 489}; 490 491/// CXXBindTemporaryExpr - Represents binding an expression to a temporary, 492/// so its destructor can be called later. 493class CXXBindTemporaryExpr : public Expr { 494 CXXTemporary *Temp; 495 496 Stmt *SubExpr; 497 498 CXXBindTemporaryExpr(CXXTemporary *temp, Expr* subexpr) 499 : Expr(CXXBindTemporaryExprClass, subexpr->getType(), false, false), 500 Temp(temp), SubExpr(subexpr) { } 501 ~CXXBindTemporaryExpr() { } 502 503protected: 504 virtual void DoDestroy(ASTContext &C); 505 506public: 507 static CXXBindTemporaryExpr *Create(ASTContext &C, CXXTemporary *Temp, 508 Expr* SubExpr); 509 510 CXXTemporary *getTemporary() { return Temp; } 511 const CXXTemporary *getTemporary() const { return Temp; } 512 513 const Expr *getSubExpr() const { return cast<Expr>(SubExpr); } 514 Expr *getSubExpr() { return cast<Expr>(SubExpr); } 515 void setSubExpr(Expr *E) { SubExpr = E; } 516 517 virtual SourceRange getSourceRange() const { 518 return SubExpr->getSourceRange(); 519 } 520 521 // Implement isa/cast/dyncast/etc. 522 static bool classof(const Stmt *T) { 523 return T->getStmtClass() == CXXBindTemporaryExprClass; 524 } 525 static bool classof(const CXXBindTemporaryExpr *) { return true; } 526 527 // Iterators 528 virtual child_iterator child_begin(); 529 virtual child_iterator child_end(); 530}; 531 532/// CXXConstructExpr - Represents a call to a C++ constructor. 533class CXXConstructExpr : public Expr { 534 CXXConstructorDecl *Constructor; 535 536 SourceLocation Loc; 537 bool Elidable : 1; 538 bool ZeroInitialization : 1; 539 Stmt **Args; 540 unsigned NumArgs; 541 542protected: 543 CXXConstructExpr(ASTContext &C, StmtClass SC, QualType T, 544 SourceLocation Loc, 545 CXXConstructorDecl *d, bool elidable, 546 Expr **args, unsigned numargs, 547 bool ZeroInitialization = false); 548 ~CXXConstructExpr() { } 549 550 virtual void DoDestroy(ASTContext &C); 551 552public: 553 /// \brief Construct an empty C++ construction expression that will store 554 /// \p numargs arguments. 555 CXXConstructExpr(EmptyShell Empty, ASTContext &C, unsigned numargs); 556 557 static CXXConstructExpr *Create(ASTContext &C, QualType T, 558 SourceLocation Loc, 559 CXXConstructorDecl *D, bool Elidable, 560 Expr **Args, unsigned NumArgs, 561 bool ZeroInitialization = false); 562 563 564 CXXConstructorDecl* getConstructor() const { return Constructor; } 565 void setConstructor(CXXConstructorDecl *C) { Constructor = C; } 566 567 SourceLocation getLocation() const { return Loc; } 568 void setLocation(SourceLocation Loc) { this->Loc = Loc; } 569 570 /// \brief Whether this construction is elidable. 571 bool isElidable() const { return Elidable; } 572 void setElidable(bool E) { Elidable = E; } 573 574 /// \brief Whether this construction first requires 575 /// zero-initialization before the initializer is called. 576 bool requiresZeroInitialization() const { return ZeroInitialization; } 577 void setRequiresZeroInitialization(bool ZeroInit) { 578 ZeroInitialization = ZeroInit; 579 } 580 581 typedef ExprIterator arg_iterator; 582 typedef ConstExprIterator const_arg_iterator; 583 584 arg_iterator arg_begin() { return Args; } 585 arg_iterator arg_end() { return Args + NumArgs; } 586 const_arg_iterator arg_begin() const { return Args; } 587 const_arg_iterator arg_end() const { return Args + NumArgs; } 588 589 Expr **getArgs() const { return reinterpret_cast<Expr **>(Args); } 590 unsigned getNumArgs() const { return NumArgs; } 591 592 /// getArg - Return the specified argument. 593 Expr *getArg(unsigned Arg) { 594 assert(Arg < NumArgs && "Arg access out of range!"); 595 return cast<Expr>(Args[Arg]); 596 } 597 const Expr *getArg(unsigned Arg) const { 598 assert(Arg < NumArgs && "Arg access out of range!"); 599 return cast<Expr>(Args[Arg]); 600 } 601 602 /// setArg - Set the specified argument. 603 void setArg(unsigned Arg, Expr *ArgExpr) { 604 assert(Arg < NumArgs && "Arg access out of range!"); 605 Args[Arg] = ArgExpr; 606 } 607 608 virtual SourceRange getSourceRange() const; 609 610 static bool classof(const Stmt *T) { 611 return T->getStmtClass() == CXXConstructExprClass || 612 T->getStmtClass() == CXXTemporaryObjectExprClass; 613 } 614 static bool classof(const CXXConstructExpr *) { return true; } 615 616 // Iterators 617 virtual child_iterator child_begin(); 618 virtual child_iterator child_end(); 619}; 620 621/// CXXFunctionalCastExpr - Represents an explicit C++ type conversion 622/// that uses "functional" notion (C++ [expr.type.conv]). Example: @c 623/// x = int(0.5); 624class CXXFunctionalCastExpr : public ExplicitCastExpr { 625 SourceLocation TyBeginLoc; 626 SourceLocation RParenLoc; 627public: 628 CXXFunctionalCastExpr(QualType ty, QualType writtenTy, 629 SourceLocation tyBeginLoc, CastKind kind, 630 Expr *castExpr, SourceLocation rParenLoc) 631 : ExplicitCastExpr(CXXFunctionalCastExprClass, ty, kind, castExpr, 632 writtenTy), 633 TyBeginLoc(tyBeginLoc), RParenLoc(rParenLoc) {} 634 635 SourceLocation getTypeBeginLoc() const { return TyBeginLoc; } 636 SourceLocation getRParenLoc() const { return RParenLoc; } 637 638 virtual SourceRange getSourceRange() const { 639 return SourceRange(TyBeginLoc, RParenLoc); 640 } 641 static bool classof(const Stmt *T) { 642 return T->getStmtClass() == CXXFunctionalCastExprClass; 643 } 644 static bool classof(const CXXFunctionalCastExpr *) { return true; } 645}; 646 647/// @brief Represents a C++ functional cast expression that builds a 648/// temporary object. 649/// 650/// This expression type represents a C++ "functional" cast 651/// (C++[expr.type.conv]) with N != 1 arguments that invokes a 652/// constructor to build a temporary object. If N == 0 but no 653/// constructor will be called (because the functional cast is 654/// performing a value-initialized an object whose class type has no 655/// user-declared constructors), CXXZeroInitValueExpr will represent 656/// the functional cast. Finally, with N == 1 arguments the functional 657/// cast expression will be represented by CXXFunctionalCastExpr. 658/// Example: 659/// @code 660/// struct X { X(int, float); } 661/// 662/// X create_X() { 663/// return X(1, 3.14f); // creates a CXXTemporaryObjectExpr 664/// }; 665/// @endcode 666class CXXTemporaryObjectExpr : public CXXConstructExpr { 667 SourceLocation TyBeginLoc; 668 SourceLocation RParenLoc; 669 670public: 671 CXXTemporaryObjectExpr(ASTContext &C, CXXConstructorDecl *Cons, 672 QualType writtenTy, SourceLocation tyBeginLoc, 673 Expr **Args,unsigned NumArgs, 674 SourceLocation rParenLoc); 675 676 ~CXXTemporaryObjectExpr() { } 677 678 SourceLocation getTypeBeginLoc() const { return TyBeginLoc; } 679 SourceLocation getRParenLoc() const { return RParenLoc; } 680 681 virtual SourceRange getSourceRange() const { 682 return SourceRange(TyBeginLoc, RParenLoc); 683 } 684 static bool classof(const Stmt *T) { 685 return T->getStmtClass() == CXXTemporaryObjectExprClass; 686 } 687 static bool classof(const CXXTemporaryObjectExpr *) { return true; } 688}; 689 690/// CXXZeroInitValueExpr - [C++ 5.2.3p2] 691/// Expression "T()" which creates a value-initialized rvalue of type 692/// T, which is either a non-class type or a class type without any 693/// user-defined constructors. 694/// 695class CXXZeroInitValueExpr : public Expr { 696 SourceLocation TyBeginLoc; 697 SourceLocation RParenLoc; 698 699public: 700 CXXZeroInitValueExpr(QualType ty, SourceLocation tyBeginLoc, 701 SourceLocation rParenLoc ) : 702 Expr(CXXZeroInitValueExprClass, ty, false, false), 703 TyBeginLoc(tyBeginLoc), RParenLoc(rParenLoc) {} 704 705 SourceLocation getTypeBeginLoc() const { return TyBeginLoc; } 706 SourceLocation getRParenLoc() const { return RParenLoc; } 707 708 /// @brief Whether this initialization expression was 709 /// implicitly-generated. 710 bool isImplicit() const { 711 return TyBeginLoc.isInvalid() && RParenLoc.isInvalid(); 712 } 713 714 virtual SourceRange getSourceRange() const { 715 return SourceRange(TyBeginLoc, RParenLoc); 716 } 717 718 static bool classof(const Stmt *T) { 719 return T->getStmtClass() == CXXZeroInitValueExprClass; 720 } 721 static bool classof(const CXXZeroInitValueExpr *) { return true; } 722 723 // Iterators 724 virtual child_iterator child_begin(); 725 virtual child_iterator child_end(); 726}; 727 728/// CXXNewExpr - A new expression for memory allocation and constructor calls, 729/// e.g: "new CXXNewExpr(foo)". 730class CXXNewExpr : public Expr { 731 // Was the usage ::new, i.e. is the global new to be used? 732 bool GlobalNew : 1; 733 // Was the form (type-id) used? Otherwise, it was new-type-id. 734 bool ParenTypeId : 1; 735 // Is there an initializer? If not, built-ins are uninitialized, else they're 736 // value-initialized. 737 bool Initializer : 1; 738 // Do we allocate an array? If so, the first SubExpr is the size expression. 739 bool Array : 1; 740 // The number of placement new arguments. 741 unsigned NumPlacementArgs : 14; 742 // The number of constructor arguments. This may be 1 even for non-class 743 // types; use the pseudo copy constructor. 744 unsigned NumConstructorArgs : 14; 745 // Contains an optional array size expression, any number of optional 746 // placement arguments, and any number of optional constructor arguments, 747 // in that order. 748 Stmt **SubExprs; 749 // Points to the allocation function used. 750 FunctionDecl *OperatorNew; 751 // Points to the deallocation function used in case of error. May be null. 752 FunctionDecl *OperatorDelete; 753 // Points to the constructor used. Cannot be null if AllocType is a record; 754 // it would still point at the default constructor (even an implicit one). 755 // Must be null for all other types. 756 CXXConstructorDecl *Constructor; 757 758 SourceLocation StartLoc; 759 SourceLocation EndLoc; 760 761public: 762 CXXNewExpr(bool globalNew, FunctionDecl *operatorNew, Expr **placementArgs, 763 unsigned numPlaceArgs, bool ParenTypeId, Expr *arraySize, 764 CXXConstructorDecl *constructor, bool initializer, 765 Expr **constructorArgs, unsigned numConsArgs, 766 FunctionDecl *operatorDelete, QualType ty, 767 SourceLocation startLoc, SourceLocation endLoc); 768 ~CXXNewExpr() { 769 delete[] SubExprs; 770 } 771 772 QualType getAllocatedType() const { 773 assert(getType()->isPointerType()); 774 return getType()->getAs<PointerType>()->getPointeeType(); 775 } 776 777 FunctionDecl *getOperatorNew() const { return OperatorNew; } 778 FunctionDecl *getOperatorDelete() const { return OperatorDelete; } 779 CXXConstructorDecl *getConstructor() const { return Constructor; } 780 781 bool isArray() const { return Array; } 782 Expr *getArraySize() { 783 return Array ? cast<Expr>(SubExprs[0]) : 0; 784 } 785 const Expr *getArraySize() const { 786 return Array ? cast<Expr>(SubExprs[0]) : 0; 787 } 788 789 unsigned getNumPlacementArgs() const { return NumPlacementArgs; } 790 Expr *getPlacementArg(unsigned i) { 791 assert(i < NumPlacementArgs && "Index out of range"); 792 return cast<Expr>(SubExprs[Array + i]); 793 } 794 const Expr *getPlacementArg(unsigned i) const { 795 assert(i < NumPlacementArgs && "Index out of range"); 796 return cast<Expr>(SubExprs[Array + i]); 797 } 798 799 bool isGlobalNew() const { return GlobalNew; } 800 bool isParenTypeId() const { return ParenTypeId; } 801 bool hasInitializer() const { return Initializer; } 802 803 unsigned getNumConstructorArgs() const { return NumConstructorArgs; } 804 Expr *getConstructorArg(unsigned i) { 805 assert(i < NumConstructorArgs && "Index out of range"); 806 return cast<Expr>(SubExprs[Array + NumPlacementArgs + i]); 807 } 808 const Expr *getConstructorArg(unsigned i) const { 809 assert(i < NumConstructorArgs && "Index out of range"); 810 return cast<Expr>(SubExprs[Array + NumPlacementArgs + i]); 811 } 812 813 typedef ExprIterator arg_iterator; 814 typedef ConstExprIterator const_arg_iterator; 815 816 arg_iterator placement_arg_begin() { 817 return SubExprs + Array; 818 } 819 arg_iterator placement_arg_end() { 820 return SubExprs + Array + getNumPlacementArgs(); 821 } 822 const_arg_iterator placement_arg_begin() const { 823 return SubExprs + Array; 824 } 825 const_arg_iterator placement_arg_end() const { 826 return SubExprs + Array + getNumPlacementArgs(); 827 } 828 829 arg_iterator constructor_arg_begin() { 830 return SubExprs + Array + getNumPlacementArgs(); 831 } 832 arg_iterator constructor_arg_end() { 833 return SubExprs + Array + getNumPlacementArgs() + getNumConstructorArgs(); 834 } 835 const_arg_iterator constructor_arg_begin() const { 836 return SubExprs + Array + getNumPlacementArgs(); 837 } 838 const_arg_iterator constructor_arg_end() const { 839 return SubExprs + Array + getNumPlacementArgs() + getNumConstructorArgs(); 840 } 841 842 virtual SourceRange getSourceRange() const { 843 return SourceRange(StartLoc, EndLoc); 844 } 845 846 static bool classof(const Stmt *T) { 847 return T->getStmtClass() == CXXNewExprClass; 848 } 849 static bool classof(const CXXNewExpr *) { return true; } 850 851 // Iterators 852 virtual child_iterator child_begin(); 853 virtual child_iterator child_end(); 854}; 855 856/// CXXDeleteExpr - A delete expression for memory deallocation and destructor 857/// calls, e.g. "delete[] pArray". 858class CXXDeleteExpr : public Expr { 859 // Is this a forced global delete, i.e. "::delete"? 860 bool GlobalDelete : 1; 861 // Is this the array form of delete, i.e. "delete[]"? 862 bool ArrayForm : 1; 863 // Points to the operator delete overload that is used. Could be a member. 864 FunctionDecl *OperatorDelete; 865 // The pointer expression to be deleted. 866 Stmt *Argument; 867 // Location of the expression. 868 SourceLocation Loc; 869public: 870 CXXDeleteExpr(QualType ty, bool globalDelete, bool arrayForm, 871 FunctionDecl *operatorDelete, Expr *arg, SourceLocation loc) 872 : Expr(CXXDeleteExprClass, ty, false, false), GlobalDelete(globalDelete), 873 ArrayForm(arrayForm), OperatorDelete(operatorDelete), Argument(arg), 874 Loc(loc) { } 875 876 bool isGlobalDelete() const { return GlobalDelete; } 877 bool isArrayForm() const { return ArrayForm; } 878 879 FunctionDecl *getOperatorDelete() const { return OperatorDelete; } 880 881 Expr *getArgument() { return cast<Expr>(Argument); } 882 const Expr *getArgument() const { return cast<Expr>(Argument); } 883 884 virtual SourceRange getSourceRange() const { 885 return SourceRange(Loc, Argument->getLocEnd()); 886 } 887 888 static bool classof(const Stmt *T) { 889 return T->getStmtClass() == CXXDeleteExprClass; 890 } 891 static bool classof(const CXXDeleteExpr *) { return true; } 892 893 // Iterators 894 virtual child_iterator child_begin(); 895 virtual child_iterator child_end(); 896}; 897 898/// \brief Represents a C++ pseudo-destructor (C++ [expr.pseudo]). 899/// 900/// Example: 901/// 902/// \code 903/// template<typename T> 904/// void destroy(T* ptr) { 905/// ptr->~T(); 906/// } 907/// \endcode 908/// 909/// When the template is parsed, the expression \c ptr->~T will be stored as 910/// a member reference expression. If it then instantiated with a scalar type 911/// as a template argument for T, the resulting expression will be a 912/// pseudo-destructor expression. 913class CXXPseudoDestructorExpr : public Expr { 914 /// \brief The base expression (that is being destroyed). 915 Stmt *Base; 916 917 /// \brief Whether the operator was an arrow ('->'); otherwise, it was a 918 /// period ('.'). 919 bool IsArrow : 1; 920 921 /// \brief The location of the '.' or '->' operator. 922 SourceLocation OperatorLoc; 923 924 /// \brief The nested-name-specifier that follows the operator, if present. 925 NestedNameSpecifier *Qualifier; 926 927 /// \brief The source range that covers the nested-name-specifier, if 928 /// present. 929 SourceRange QualifierRange; 930 931 /// \brief The type being destroyed. 932 QualType DestroyedType; 933 934 /// \brief The location of the type after the '~'. 935 SourceLocation DestroyedTypeLoc; 936 937public: 938 CXXPseudoDestructorExpr(ASTContext &Context, 939 Expr *Base, bool isArrow, SourceLocation OperatorLoc, 940 NestedNameSpecifier *Qualifier, 941 SourceRange QualifierRange, 942 QualType DestroyedType, 943 SourceLocation DestroyedTypeLoc) 944 : Expr(CXXPseudoDestructorExprClass, 945 Context.getPointerType(Context.getFunctionType(Context.VoidTy, 0, 0, 946 false, 0)), 947 /*isTypeDependent=*/false, 948 /*isValueDependent=*/Base->isValueDependent()), 949 Base(static_cast<Stmt *>(Base)), IsArrow(isArrow), 950 OperatorLoc(OperatorLoc), Qualifier(Qualifier), 951 QualifierRange(QualifierRange), DestroyedType(DestroyedType), 952 DestroyedTypeLoc(DestroyedTypeLoc) { } 953 954 void setBase(Expr *E) { Base = E; } 955 Expr *getBase() const { return cast<Expr>(Base); } 956 957 /// \brief Determines whether this member expression actually had 958 /// a C++ nested-name-specifier prior to the name of the member, e.g., 959 /// x->Base::foo. 960 bool hasQualifier() const { return Qualifier != 0; } 961 962 /// \brief If the member name was qualified, retrieves the source range of 963 /// the nested-name-specifier that precedes the member name. Otherwise, 964 /// returns an empty source range. 965 SourceRange getQualifierRange() const { return QualifierRange; } 966 967 /// \brief If the member name was qualified, retrieves the 968 /// nested-name-specifier that precedes the member name. Otherwise, returns 969 /// NULL. 970 NestedNameSpecifier *getQualifier() const { return Qualifier; } 971 972 /// \brief Determine whether this pseudo-destructor expression was written 973 /// using an '->' (otherwise, it used a '.'). 974 bool isArrow() const { return IsArrow; } 975 void setArrow(bool A) { IsArrow = A; } 976 977 /// \brief Retrieve the location of the '.' or '->' operator. 978 SourceLocation getOperatorLoc() const { return OperatorLoc; } 979 980 /// \brief Retrieve the type that is being destroyed. 981 QualType getDestroyedType() const { return DestroyedType; } 982 983 /// \brief Retrieve the location of the type being destroyed. 984 SourceLocation getDestroyedTypeLoc() const { return DestroyedTypeLoc; } 985 986 virtual SourceRange getSourceRange() const { 987 return SourceRange(Base->getLocStart(), DestroyedTypeLoc); 988 } 989 990 static bool classof(const Stmt *T) { 991 return T->getStmtClass() == CXXPseudoDestructorExprClass; 992 } 993 static bool classof(const CXXPseudoDestructorExpr *) { return true; } 994 995 // Iterators 996 virtual child_iterator child_begin(); 997 virtual child_iterator child_end(); 998}; 999 1000/// UnaryTypeTraitExpr - A GCC or MS unary type trait, as used in the 1001/// implementation of TR1/C++0x type trait templates. 1002/// Example: 1003/// __is_pod(int) == true 1004/// __is_enum(std::string) == false 1005class UnaryTypeTraitExpr : public Expr { 1006 /// UTT - The trait. 1007 UnaryTypeTrait UTT; 1008 1009 /// Loc - The location of the type trait keyword. 1010 SourceLocation Loc; 1011 1012 /// RParen - The location of the closing paren. 1013 SourceLocation RParen; 1014 1015 /// QueriedType - The type we're testing. 1016 QualType QueriedType; 1017 1018public: 1019 UnaryTypeTraitExpr(SourceLocation loc, UnaryTypeTrait utt, QualType queried, 1020 SourceLocation rparen, QualType ty) 1021 : Expr(UnaryTypeTraitExprClass, ty, false, queried->isDependentType()), 1022 UTT(utt), Loc(loc), RParen(rparen), QueriedType(queried) { } 1023 1024 virtual SourceRange getSourceRange() const { return SourceRange(Loc, RParen);} 1025 1026 UnaryTypeTrait getTrait() const { return UTT; } 1027 1028 QualType getQueriedType() const { return QueriedType; } 1029 1030 bool EvaluateTrait(ASTContext&) const; 1031 1032 static bool classof(const Stmt *T) { 1033 return T->getStmtClass() == UnaryTypeTraitExprClass; 1034 } 1035 static bool classof(const UnaryTypeTraitExpr *) { return true; } 1036 1037 // Iterators 1038 virtual child_iterator child_begin(); 1039 virtual child_iterator child_end(); 1040}; 1041 1042/// \brief A reference to a name which we were able to look up during 1043/// parsing but could not resolve to a specific declaration. This 1044/// arises in several ways: 1045/// * we might be waiting for argument-dependent lookup 1046/// * the name might resolve to an overloaded function 1047/// and eventually: 1048/// * the lookup might have included a function template 1049/// These never include UnresolvedUsingValueDecls, which are always 1050/// class members and therefore appear only in 1051/// UnresolvedMemberLookupExprs. 1052class UnresolvedLookupExpr : public Expr { 1053 /// The results. These are undesugared, which is to say, they may 1054 /// include UsingShadowDecls. 1055 UnresolvedSet Results; 1056 1057 /// The name declared. 1058 DeclarationName Name; 1059 1060 /// The qualifier given, if any. 1061 NestedNameSpecifier *Qualifier; 1062 1063 /// The source range of the nested name specifier. 1064 SourceRange QualifierRange; 1065 1066 /// The location of the name. 1067 SourceLocation NameLoc; 1068 1069 /// True if these lookup results should be extended by 1070 /// argument-dependent lookup if this is the operand of a function 1071 /// call. 1072 bool RequiresADL; 1073 1074 /// True if these lookup results are overloaded. This is pretty 1075 /// trivially rederivable if we urgently need to kill this field. 1076 bool Overloaded; 1077 1078 /// True if the name looked up had explicit template arguments. 1079 /// This requires all the results to be function templates. 1080 bool HasExplicitTemplateArgs; 1081 1082 UnresolvedLookupExpr(QualType T, bool Dependent, 1083 NestedNameSpecifier *Qualifier, SourceRange QRange, 1084 DeclarationName Name, SourceLocation NameLoc, 1085 bool RequiresADL, bool Overloaded, bool HasTemplateArgs) 1086 : Expr(UnresolvedLookupExprClass, T, Dependent, Dependent), 1087 Name(Name), Qualifier(Qualifier), QualifierRange(QRange), 1088 NameLoc(NameLoc), RequiresADL(RequiresADL), Overloaded(Overloaded), 1089 HasExplicitTemplateArgs(HasTemplateArgs) 1090 {} 1091 1092public: 1093 static UnresolvedLookupExpr *Create(ASTContext &C, 1094 bool Dependent, 1095 NestedNameSpecifier *Qualifier, 1096 SourceRange QualifierRange, 1097 DeclarationName Name, 1098 SourceLocation NameLoc, 1099 bool ADL, bool Overloaded) { 1100 return new(C) UnresolvedLookupExpr(Dependent ? C.DependentTy : C.OverloadTy, 1101 Dependent, Qualifier, QualifierRange, 1102 Name, NameLoc, ADL, Overloaded, false); 1103 } 1104 1105 static UnresolvedLookupExpr *Create(ASTContext &C, 1106 bool Dependent, 1107 NestedNameSpecifier *Qualifier, 1108 SourceRange QualifierRange, 1109 DeclarationName Name, 1110 SourceLocation NameLoc, 1111 bool ADL, 1112 const TemplateArgumentListInfo &Args); 1113 1114 /// Computes whether an unresolved lookup on the given declarations 1115 /// and optional template arguments is type- and value-dependent. 1116 static bool ComputeDependence(NamedDecl * const *Begin, 1117 NamedDecl * const *End, 1118 const TemplateArgumentListInfo *Args); 1119 1120 void addDecl(NamedDecl *Decl) { 1121 Results.addDecl(Decl); 1122 } 1123 1124 typedef UnresolvedSet::iterator decls_iterator; 1125 decls_iterator decls_begin() const { return Results.begin(); } 1126 decls_iterator decls_end() const { return Results.end(); } 1127 1128 /// True if this declaration should be extended by 1129 /// argument-dependent lookup. 1130 bool requiresADL() const { return RequiresADL; } 1131 1132 /// True if this lookup is overloaded. 1133 bool isOverloaded() const { return Overloaded; } 1134 1135 /// Fetches the name looked up. 1136 DeclarationName getName() const { return Name; } 1137 1138 /// Gets the location of the name. 1139 SourceLocation getNameLoc() const { return NameLoc; } 1140 1141 /// Fetches the nested-name qualifier, if one was given. 1142 NestedNameSpecifier *getQualifier() const { return Qualifier; } 1143 1144 /// Fetches the range of the nested-name qualifier. 1145 SourceRange getQualifierRange() const { return QualifierRange; } 1146 1147 /// Determines whether this lookup had explicit template arguments. 1148 bool hasExplicitTemplateArgs() const { return HasExplicitTemplateArgs; } 1149 1150 // Note that, inconsistently with the explicit-template-argument AST 1151 // nodes, users are *forbidden* from calling these methods on objects 1152 // without explicit template arguments. 1153 1154 /// Gets a reference to the explicit template argument list. 1155 const ExplicitTemplateArgumentList &getExplicitTemplateArgs() const { 1156 assert(hasExplicitTemplateArgs()); 1157 return *reinterpret_cast<const ExplicitTemplateArgumentList*>(this + 1); 1158 } 1159 1160 /// \brief Copies the template arguments (if present) into the given 1161 /// structure. 1162 void copyTemplateArgumentsInto(TemplateArgumentListInfo &List) const { 1163 getExplicitTemplateArgs().copyInto(List); 1164 } 1165 1166 SourceLocation getLAngleLoc() const { 1167 return getExplicitTemplateArgs().LAngleLoc; 1168 } 1169 1170 SourceLocation getRAngleLoc() const { 1171 return getExplicitTemplateArgs().RAngleLoc; 1172 } 1173 1174 TemplateArgumentLoc const *getTemplateArgs() const { 1175 return getExplicitTemplateArgs().getTemplateArgs(); 1176 } 1177 1178 unsigned getNumTemplateArgs() const { 1179 return getExplicitTemplateArgs().NumTemplateArgs; 1180 } 1181 1182 virtual SourceRange getSourceRange() const { 1183 SourceRange Range(NameLoc); 1184 if (Qualifier) Range.setBegin(QualifierRange.getBegin()); 1185 if (hasExplicitTemplateArgs()) Range.setEnd(getRAngleLoc()); 1186 return Range; 1187 } 1188 1189 virtual StmtIterator child_begin(); 1190 virtual StmtIterator child_end(); 1191 1192 static bool classof(const Stmt *T) { 1193 return T->getStmtClass() == UnresolvedLookupExprClass; 1194 } 1195 static bool classof(const UnresolvedLookupExpr *) { return true; } 1196}; 1197 1198/// \brief A qualified reference to a name whose declaration cannot 1199/// yet be resolved. 1200/// 1201/// DependentScopeDeclRefExpr is similar to DeclRefExpr in that 1202/// it expresses a reference to a declaration such as 1203/// X<T>::value. The difference, however, is that an 1204/// DependentScopeDeclRefExpr node is used only within C++ templates when 1205/// the qualification (e.g., X<T>::) refers to a dependent type. In 1206/// this case, X<T>::value cannot resolve to a declaration because the 1207/// declaration will differ from on instantiation of X<T> to the 1208/// next. Therefore, DependentScopeDeclRefExpr keeps track of the 1209/// qualifier (X<T>::) and the name of the entity being referenced 1210/// ("value"). Such expressions will instantiate to a DeclRefExpr once the 1211/// declaration can be found. 1212class DependentScopeDeclRefExpr : public Expr { 1213 /// The name of the entity we will be referencing. 1214 DeclarationName Name; 1215 1216 /// Location of the name of the declaration we're referencing. 1217 SourceLocation Loc; 1218 1219 /// QualifierRange - The source range that covers the 1220 /// nested-name-specifier. 1221 SourceRange QualifierRange; 1222 1223 /// \brief The nested-name-specifier that qualifies this unresolved 1224 /// declaration name. 1225 NestedNameSpecifier *Qualifier; 1226 1227 /// \brief Whether the name includes explicit template arguments. 1228 bool HasExplicitTemplateArgs; 1229 1230 DependentScopeDeclRefExpr(QualType T, 1231 NestedNameSpecifier *Qualifier, 1232 SourceRange QualifierRange, 1233 DeclarationName Name, 1234 SourceLocation NameLoc, 1235 bool HasExplicitTemplateArgs) 1236 : Expr(DependentScopeDeclRefExprClass, T, true, true), 1237 Name(Name), Loc(NameLoc), 1238 QualifierRange(QualifierRange), Qualifier(Qualifier), 1239 HasExplicitTemplateArgs(HasExplicitTemplateArgs) 1240 {} 1241 1242public: 1243 static DependentScopeDeclRefExpr *Create(ASTContext &C, 1244 NestedNameSpecifier *Qualifier, 1245 SourceRange QualifierRange, 1246 DeclarationName Name, 1247 SourceLocation NameLoc, 1248 const TemplateArgumentListInfo *TemplateArgs = 0); 1249 1250 /// \brief Retrieve the name that this expression refers to. 1251 DeclarationName getDeclName() const { return Name; } 1252 1253 /// \brief Retrieve the location of the name within the expression. 1254 SourceLocation getLocation() const { return Loc; } 1255 1256 /// \brief Retrieve the source range of the nested-name-specifier. 1257 SourceRange getQualifierRange() const { return QualifierRange; } 1258 1259 /// \brief Retrieve the nested-name-specifier that qualifies this 1260 /// declaration. 1261 NestedNameSpecifier *getQualifier() const { return Qualifier; } 1262 1263 /// Determines whether this lookup had explicit template arguments. 1264 bool hasExplicitTemplateArgs() const { return HasExplicitTemplateArgs; } 1265 1266 // Note that, inconsistently with the explicit-template-argument AST 1267 // nodes, users are *forbidden* from calling these methods on objects 1268 // without explicit template arguments. 1269 1270 /// Gets a reference to the explicit template argument list. 1271 const ExplicitTemplateArgumentList &getExplicitTemplateArgs() const { 1272 assert(hasExplicitTemplateArgs()); 1273 return *reinterpret_cast<const ExplicitTemplateArgumentList*>(this + 1); 1274 } 1275 1276 /// \brief Copies the template arguments (if present) into the given 1277 /// structure. 1278 void copyTemplateArgumentsInto(TemplateArgumentListInfo &List) const { 1279 getExplicitTemplateArgs().copyInto(List); 1280 } 1281 1282 SourceLocation getLAngleLoc() const { 1283 return getExplicitTemplateArgs().LAngleLoc; 1284 } 1285 1286 SourceLocation getRAngleLoc() const { 1287 return getExplicitTemplateArgs().RAngleLoc; 1288 } 1289 1290 TemplateArgumentLoc const *getTemplateArgs() const { 1291 return getExplicitTemplateArgs().getTemplateArgs(); 1292 } 1293 1294 unsigned getNumTemplateArgs() const { 1295 return getExplicitTemplateArgs().NumTemplateArgs; 1296 } 1297 1298 virtual SourceRange getSourceRange() const { 1299 SourceRange Range(QualifierRange.getBegin(), getLocation()); 1300 if (hasExplicitTemplateArgs()) 1301 Range.setEnd(getRAngleLoc()); 1302 return Range; 1303 } 1304 1305 static bool classof(const Stmt *T) { 1306 return T->getStmtClass() == DependentScopeDeclRefExprClass; 1307 } 1308 static bool classof(const DependentScopeDeclRefExpr *) { return true; } 1309 1310 virtual StmtIterator child_begin(); 1311 virtual StmtIterator child_end(); 1312}; 1313 1314class CXXExprWithTemporaries : public Expr { 1315 Stmt *SubExpr; 1316 1317 CXXTemporary **Temps; 1318 unsigned NumTemps; 1319 1320 CXXExprWithTemporaries(Expr *SubExpr, CXXTemporary **Temps, 1321 unsigned NumTemps); 1322 ~CXXExprWithTemporaries(); 1323 1324protected: 1325 virtual void DoDestroy(ASTContext &C); 1326 1327public: 1328 static CXXExprWithTemporaries *Create(ASTContext &C, Expr *SubExpr, 1329 CXXTemporary **Temps, 1330 unsigned NumTemps); 1331 1332 unsigned getNumTemporaries() const { return NumTemps; } 1333 CXXTemporary *getTemporary(unsigned i) { 1334 assert(i < NumTemps && "Index out of range"); 1335 return Temps[i]; 1336 } 1337 const CXXTemporary *getTemporary(unsigned i) const { 1338 return const_cast<CXXExprWithTemporaries*>(this)->getTemporary(i); 1339 } 1340 1341 Expr *getSubExpr() { return cast<Expr>(SubExpr); } 1342 const Expr *getSubExpr() const { return cast<Expr>(SubExpr); } 1343 void setSubExpr(Expr *E) { SubExpr = E; } 1344 1345 virtual SourceRange getSourceRange() const { 1346 return SubExpr->getSourceRange(); 1347 } 1348 1349 // Implement isa/cast/dyncast/etc. 1350 static bool classof(const Stmt *T) { 1351 return T->getStmtClass() == CXXExprWithTemporariesClass; 1352 } 1353 static bool classof(const CXXExprWithTemporaries *) { return true; } 1354 1355 // Iterators 1356 virtual child_iterator child_begin(); 1357 virtual child_iterator child_end(); 1358}; 1359 1360/// \brief Describes an explicit type conversion that uses functional 1361/// notion but could not be resolved because one or more arguments are 1362/// type-dependent. 1363/// 1364/// The explicit type conversions expressed by 1365/// CXXUnresolvedConstructExpr have the form \c T(a1, a2, ..., aN), 1366/// where \c T is some type and \c a1, a2, ..., aN are values, and 1367/// either \C T is a dependent type or one or more of the \c a's is 1368/// type-dependent. For example, this would occur in a template such 1369/// as: 1370/// 1371/// \code 1372/// template<typename T, typename A1> 1373/// inline T make_a(const A1& a1) { 1374/// return T(a1); 1375/// } 1376/// \endcode 1377/// 1378/// When the returned expression is instantiated, it may resolve to a 1379/// constructor call, conversion function call, or some kind of type 1380/// conversion. 1381class CXXUnresolvedConstructExpr : public Expr { 1382 /// \brief The starting location of the type 1383 SourceLocation TyBeginLoc; 1384 1385 /// \brief The type being constructed. 1386 QualType Type; 1387 1388 /// \brief The location of the left parentheses ('('). 1389 SourceLocation LParenLoc; 1390 1391 /// \brief The location of the right parentheses (')'). 1392 SourceLocation RParenLoc; 1393 1394 /// \brief The number of arguments used to construct the type. 1395 unsigned NumArgs; 1396 1397 CXXUnresolvedConstructExpr(SourceLocation TyBegin, 1398 QualType T, 1399 SourceLocation LParenLoc, 1400 Expr **Args, 1401 unsigned NumArgs, 1402 SourceLocation RParenLoc); 1403 1404public: 1405 static CXXUnresolvedConstructExpr *Create(ASTContext &C, 1406 SourceLocation TyBegin, 1407 QualType T, 1408 SourceLocation LParenLoc, 1409 Expr **Args, 1410 unsigned NumArgs, 1411 SourceLocation RParenLoc); 1412 1413 /// \brief Retrieve the source location where the type begins. 1414 SourceLocation getTypeBeginLoc() const { return TyBeginLoc; } 1415 void setTypeBeginLoc(SourceLocation L) { TyBeginLoc = L; } 1416 1417 /// \brief Retrieve the type that is being constructed, as specified 1418 /// in the source code. 1419 QualType getTypeAsWritten() const { return Type; } 1420 void setTypeAsWritten(QualType T) { Type = T; } 1421 1422 /// \brief Retrieve the location of the left parentheses ('(') that 1423 /// precedes the argument list. 1424 SourceLocation getLParenLoc() const { return LParenLoc; } 1425 void setLParenLoc(SourceLocation L) { LParenLoc = L; } 1426 1427 /// \brief Retrieve the location of the right parentheses (')') that 1428 /// follows the argument list. 1429 SourceLocation getRParenLoc() const { return RParenLoc; } 1430 void setRParenLoc(SourceLocation L) { RParenLoc = L; } 1431 1432 /// \brief Retrieve the number of arguments. 1433 unsigned arg_size() const { return NumArgs; } 1434 1435 typedef Expr** arg_iterator; 1436 arg_iterator arg_begin() { return reinterpret_cast<Expr**>(this + 1); } 1437 arg_iterator arg_end() { return arg_begin() + NumArgs; } 1438 1439 Expr *getArg(unsigned I) { 1440 assert(I < NumArgs && "Argument index out-of-range"); 1441 return *(arg_begin() + I); 1442 } 1443 1444 virtual SourceRange getSourceRange() const { 1445 return SourceRange(TyBeginLoc, RParenLoc); 1446 } 1447 static bool classof(const Stmt *T) { 1448 return T->getStmtClass() == CXXUnresolvedConstructExprClass; 1449 } 1450 static bool classof(const CXXUnresolvedConstructExpr *) { return true; } 1451 1452 // Iterators 1453 virtual child_iterator child_begin(); 1454 virtual child_iterator child_end(); 1455}; 1456 1457/// \brief Represents a C++ member access expression where the actual 1458/// member referenced could not be resolved because the base 1459/// expression or the member name was dependent. 1460/// 1461/// Like UnresolvedMemberExprs, these can be either implicit or 1462/// explicit accesses. It is only possible to get one of these with 1463/// an implicit access if a qualifier is provided. 1464class CXXDependentScopeMemberExpr : public Expr { 1465 /// \brief The expression for the base pointer or class reference, 1466 /// e.g., the \c x in x.f. Can be null in implicit accesses. 1467 Stmt *Base; 1468 1469 /// \brief The type of the base expression. Never null, even for 1470 /// implicit accesses. 1471 QualType BaseType; 1472 1473 /// \brief Whether this member expression used the '->' operator or 1474 /// the '.' operator. 1475 bool IsArrow : 1; 1476 1477 /// \brief Whether this member expression has explicitly-specified template 1478 /// arguments. 1479 bool HasExplicitTemplateArgs : 1; 1480 1481 /// \brief The location of the '->' or '.' operator. 1482 SourceLocation OperatorLoc; 1483 1484 /// \brief The nested-name-specifier that precedes the member name, if any. 1485 NestedNameSpecifier *Qualifier; 1486 1487 /// \brief The source range covering the nested name specifier. 1488 SourceRange QualifierRange; 1489 1490 /// \brief In a qualified member access expression such as t->Base::f, this 1491 /// member stores the resolves of name lookup in the context of the member 1492 /// access expression, to be used at instantiation time. 1493 /// 1494 /// FIXME: This member, along with the Qualifier and QualifierRange, could 1495 /// be stuck into a structure that is optionally allocated at the end of 1496 /// the CXXDependentScopeMemberExpr, to save space in the common case. 1497 NamedDecl *FirstQualifierFoundInScope; 1498 1499 /// \brief The member to which this member expression refers, which 1500 /// can be name, overloaded operator, or destructor. 1501 /// FIXME: could also be a template-id 1502 DeclarationName Member; 1503 1504 /// \brief The location of the member name. 1505 SourceLocation MemberLoc; 1506 1507 /// \brief Retrieve the explicit template argument list that followed the 1508 /// member template name, if any. 1509 ExplicitTemplateArgumentList *getExplicitTemplateArgumentList() { 1510 assert(HasExplicitTemplateArgs); 1511 return reinterpret_cast<ExplicitTemplateArgumentList *>(this + 1); 1512 } 1513 1514 /// \brief Retrieve the explicit template argument list that followed the 1515 /// member template name, if any. 1516 const ExplicitTemplateArgumentList *getExplicitTemplateArgumentList() const { 1517 return const_cast<CXXDependentScopeMemberExpr *>(this) 1518 ->getExplicitTemplateArgumentList(); 1519 } 1520 1521 CXXDependentScopeMemberExpr(ASTContext &C, 1522 Expr *Base, QualType BaseType, bool IsArrow, 1523 SourceLocation OperatorLoc, 1524 NestedNameSpecifier *Qualifier, 1525 SourceRange QualifierRange, 1526 NamedDecl *FirstQualifierFoundInScope, 1527 DeclarationName Member, 1528 SourceLocation MemberLoc, 1529 const TemplateArgumentListInfo *TemplateArgs); 1530 1531public: 1532 CXXDependentScopeMemberExpr(ASTContext &C, 1533 Expr *Base, QualType BaseType, 1534 bool IsArrow, 1535 SourceLocation OperatorLoc, 1536 NestedNameSpecifier *Qualifier, 1537 SourceRange QualifierRange, 1538 NamedDecl *FirstQualifierFoundInScope, 1539 DeclarationName Member, 1540 SourceLocation MemberLoc) 1541 : Expr(CXXDependentScopeMemberExprClass, C.DependentTy, true, true), 1542 Base(Base), BaseType(BaseType), IsArrow(IsArrow), 1543 HasExplicitTemplateArgs(false), OperatorLoc(OperatorLoc), 1544 Qualifier(Qualifier), QualifierRange(QualifierRange), 1545 FirstQualifierFoundInScope(FirstQualifierFoundInScope), 1546 Member(Member), MemberLoc(MemberLoc) { } 1547 1548 static CXXDependentScopeMemberExpr * 1549 Create(ASTContext &C, 1550 Expr *Base, QualType BaseType, bool IsArrow, 1551 SourceLocation OperatorLoc, 1552 NestedNameSpecifier *Qualifier, 1553 SourceRange QualifierRange, 1554 NamedDecl *FirstQualifierFoundInScope, 1555 DeclarationName Member, 1556 SourceLocation MemberLoc, 1557 const TemplateArgumentListInfo *TemplateArgs); 1558 1559 /// \brief True if this is an implicit access, i.e. one in which the 1560 /// member being accessed was not written in the source. The source 1561 /// location of the operator is invalid in this case. 1562 bool isImplicitAccess() const { return Base == 0; } 1563 1564 /// \brief Retrieve the base object of this member expressions, 1565 /// e.g., the \c x in \c x.m. 1566 Expr *getBase() const { 1567 assert(!isImplicitAccess()); 1568 return cast<Expr>(Base); 1569 } 1570 void setBase(Expr *E) { Base = E; } 1571 1572 QualType getBaseType() const { return BaseType; } 1573 1574 /// \brief Determine whether this member expression used the '->' 1575 /// operator; otherwise, it used the '.' operator. 1576 bool isArrow() const { return IsArrow; } 1577 void setArrow(bool A) { IsArrow = A; } 1578 1579 /// \brief Retrieve the location of the '->' or '.' operator. 1580 SourceLocation getOperatorLoc() const { return OperatorLoc; } 1581 void setOperatorLoc(SourceLocation L) { OperatorLoc = L; } 1582 1583 /// \brief Retrieve the nested-name-specifier that qualifies the member 1584 /// name. 1585 NestedNameSpecifier *getQualifier() const { return Qualifier; } 1586 1587 /// \brief Retrieve the source range covering the nested-name-specifier 1588 /// that qualifies the member name. 1589 SourceRange getQualifierRange() const { return QualifierRange; } 1590 1591 /// \brief Retrieve the first part of the nested-name-specifier that was 1592 /// found in the scope of the member access expression when the member access 1593 /// was initially parsed. 1594 /// 1595 /// This function only returns a useful result when member access expression 1596 /// uses a qualified member name, e.g., "x.Base::f". Here, the declaration 1597 /// returned by this function describes what was found by unqualified name 1598 /// lookup for the identifier "Base" within the scope of the member access 1599 /// expression itself. At template instantiation time, this information is 1600 /// combined with the results of name lookup into the type of the object 1601 /// expression itself (the class type of x). 1602 NamedDecl *getFirstQualifierFoundInScope() const { 1603 return FirstQualifierFoundInScope; 1604 } 1605 1606 /// \brief Retrieve the name of the member that this expression 1607 /// refers to. 1608 DeclarationName getMember() const { return Member; } 1609 void setMember(DeclarationName N) { Member = N; } 1610 1611 // \brief Retrieve the location of the name of the member that this 1612 // expression refers to. 1613 SourceLocation getMemberLoc() const { return MemberLoc; } 1614 void setMemberLoc(SourceLocation L) { MemberLoc = L; } 1615 1616 /// \brief Determines whether this member expression actually had a C++ 1617 /// template argument list explicitly specified, e.g., x.f<int>. 1618 bool hasExplicitTemplateArgs() const { 1619 return HasExplicitTemplateArgs; 1620 } 1621 1622 /// \brief Copies the template arguments (if present) into the given 1623 /// structure. 1624 void copyTemplateArgumentsInto(TemplateArgumentListInfo &List) const { 1625 assert(HasExplicitTemplateArgs); 1626 getExplicitTemplateArgumentList()->copyInto(List); 1627 } 1628 1629 /// \brief Retrieve the location of the left angle bracket following the 1630 /// member name ('<'), if any. 1631 SourceLocation getLAngleLoc() const { 1632 assert(HasExplicitTemplateArgs); 1633 return getExplicitTemplateArgumentList()->LAngleLoc; 1634 } 1635 1636 /// \brief Retrieve the template arguments provided as part of this 1637 /// template-id. 1638 const TemplateArgumentLoc *getTemplateArgs() const { 1639 assert(HasExplicitTemplateArgs); 1640 return getExplicitTemplateArgumentList()->getTemplateArgs(); 1641 } 1642 1643 /// \brief Retrieve the number of template arguments provided as part of this 1644 /// template-id. 1645 unsigned getNumTemplateArgs() const { 1646 assert(HasExplicitTemplateArgs); 1647 return getExplicitTemplateArgumentList()->NumTemplateArgs; 1648 } 1649 1650 /// \brief Retrieve the location of the right angle bracket following the 1651 /// template arguments ('>'). 1652 SourceLocation getRAngleLoc() const { 1653 assert(HasExplicitTemplateArgs); 1654 return getExplicitTemplateArgumentList()->RAngleLoc; 1655 } 1656 1657 virtual SourceRange getSourceRange() const { 1658 SourceRange Range; 1659 if (!isImplicitAccess()) 1660 Range.setBegin(Base->getSourceRange().getBegin()); 1661 else if (getQualifier()) 1662 Range.setBegin(getQualifierRange().getBegin()); 1663 else 1664 Range.setBegin(MemberLoc); 1665 1666 if (hasExplicitTemplateArgs()) 1667 Range.setEnd(getRAngleLoc()); 1668 else 1669 Range.setEnd(MemberLoc); 1670 return Range; 1671 } 1672 1673 static bool classof(const Stmt *T) { 1674 return T->getStmtClass() == CXXDependentScopeMemberExprClass; 1675 } 1676 static bool classof(const CXXDependentScopeMemberExpr *) { return true; } 1677 1678 // Iterators 1679 virtual child_iterator child_begin(); 1680 virtual child_iterator child_end(); 1681}; 1682 1683/// \brief Represents a C++ member access expression for which lookup 1684/// produced a set of overloaded functions. 1685/// 1686/// The member access may be explicit or implicit: 1687/// struct A { 1688/// int a, b; 1689/// int explicitAccess() { return this->a + this->A::b; } 1690/// int implicitAccess() { return a + A::b; } 1691/// }; 1692/// 1693/// In the final AST, an explicit access always becomes a MemberExpr. 1694/// An implicit access may become either a MemberExpr or a 1695/// DeclRefExpr, depending on whether the member is static. 1696class UnresolvedMemberExpr : public Expr { 1697 /// The results. These are undesugared, which is to say, they may 1698 /// include UsingShadowDecls. 1699 UnresolvedSet Results; 1700 1701 /// \brief The expression for the base pointer or class reference, 1702 /// e.g., the \c x in x.f. This can be null if this is an 'unbased' 1703 /// member expression 1704 Stmt *Base; 1705 1706 /// \brief The type of the base expression; never null. 1707 QualType BaseType; 1708 1709 /// \brief Whether this member expression used the '->' operator or 1710 /// the '.' operator. 1711 bool IsArrow : 1; 1712 1713 /// \brief Whether the lookup results contain an unresolved using 1714 /// declaration. 1715 bool HasUnresolvedUsing : 1; 1716 1717 /// \brief Whether this member expression has explicitly-specified template 1718 /// arguments. 1719 bool HasExplicitTemplateArgs : 1; 1720 1721 /// \brief The location of the '->' or '.' operator. 1722 SourceLocation OperatorLoc; 1723 1724 /// \brief The nested-name-specifier that precedes the member name, if any. 1725 NestedNameSpecifier *Qualifier; 1726 1727 /// \brief The source range covering the nested name specifier. 1728 SourceRange QualifierRange; 1729 1730 /// \brief The member to which this member expression refers, which 1731 /// can be a name or an overloaded operator. 1732 DeclarationName MemberName; 1733 1734 /// \brief The location of the member name. 1735 SourceLocation MemberLoc; 1736 1737 /// \brief Retrieve the explicit template argument list that followed the 1738 /// member template name. 1739 ExplicitTemplateArgumentList *getExplicitTemplateArgs() { 1740 assert(HasExplicitTemplateArgs); 1741 return reinterpret_cast<ExplicitTemplateArgumentList *>(this + 1); 1742 } 1743 1744 /// \brief Retrieve the explicit template argument list that followed the 1745 /// member template name, if any. 1746 const ExplicitTemplateArgumentList *getExplicitTemplateArgs() const { 1747 return const_cast<UnresolvedMemberExpr*>(this)->getExplicitTemplateArgs(); 1748 } 1749 1750 UnresolvedMemberExpr(QualType T, bool Dependent, 1751 bool HasUnresolvedUsing, 1752 Expr *Base, QualType BaseType, bool IsArrow, 1753 SourceLocation OperatorLoc, 1754 NestedNameSpecifier *Qualifier, 1755 SourceRange QualifierRange, 1756 DeclarationName Member, 1757 SourceLocation MemberLoc, 1758 const TemplateArgumentListInfo *TemplateArgs); 1759 1760public: 1761 static UnresolvedMemberExpr * 1762 Create(ASTContext &C, bool Dependent, bool HasUnresolvedUsing, 1763 Expr *Base, QualType BaseType, bool IsArrow, 1764 SourceLocation OperatorLoc, 1765 NestedNameSpecifier *Qualifier, 1766 SourceRange QualifierRange, 1767 DeclarationName Member, 1768 SourceLocation MemberLoc, 1769 const TemplateArgumentListInfo *TemplateArgs); 1770 1771 /// Adds a declaration to the unresolved set. By assumption, all of 1772 /// these happen at initialization time and properties like 1773 /// 'Dependent' and 'HasUnresolvedUsing' take them into account. 1774 void addDecl(NamedDecl *Decl) { 1775 Results.addDecl(Decl); 1776 } 1777 1778 typedef UnresolvedSet::iterator decls_iterator; 1779 decls_iterator decls_begin() const { return Results.begin(); } 1780 decls_iterator decls_end() const { return Results.end(); } 1781 1782 unsigned getNumDecls() const { return Results.size(); } 1783 1784 /// \brief True if this is an implicit access, i.e. one in which the 1785 /// member being accessed was not written in the source. The source 1786 /// location of the operator is invalid in this case. 1787 bool isImplicitAccess() const { return Base == 0; } 1788 1789 /// \brief Retrieve the base object of this member expressions, 1790 /// e.g., the \c x in \c x.m. 1791 Expr *getBase() { 1792 assert(!isImplicitAccess()); 1793 return cast<Expr>(Base); 1794 } 1795 void setBase(Expr *E) { Base = E; } 1796 1797 QualType getBaseType() const { return BaseType; } 1798 1799 /// \brief Determine whether this member expression used the '->' 1800 /// operator; otherwise, it used the '.' operator. 1801 bool isArrow() const { return IsArrow; } 1802 void setArrow(bool A) { IsArrow = A; } 1803 1804 /// \brief Retrieve the location of the '->' or '.' operator. 1805 SourceLocation getOperatorLoc() const { return OperatorLoc; } 1806 void setOperatorLoc(SourceLocation L) { OperatorLoc = L; } 1807 1808 /// \brief Retrieve the nested-name-specifier that qualifies the member 1809 /// name. 1810 NestedNameSpecifier *getQualifier() const { return Qualifier; } 1811 1812 /// \brief Retrieve the source range covering the nested-name-specifier 1813 /// that qualifies the member name. 1814 SourceRange getQualifierRange() const { return QualifierRange; } 1815 1816 /// \brief Retrieve the name of the member that this expression 1817 /// refers to. 1818 DeclarationName getMemberName() const { return MemberName; } 1819 void setMemberName(DeclarationName N) { MemberName = N; } 1820 1821 // \brief Retrieve the location of the name of the member that this 1822 // expression refers to. 1823 SourceLocation getMemberLoc() const { return MemberLoc; } 1824 void setMemberLoc(SourceLocation L) { MemberLoc = L; } 1825 1826 /// \brief Determines whether this member expression actually had a C++ 1827 /// template argument list explicitly specified, e.g., x.f<int>. 1828 bool hasExplicitTemplateArgs() const { 1829 return HasExplicitTemplateArgs; 1830 } 1831 1832 /// \brief Copies the template arguments into the given structure. 1833 void copyTemplateArgumentsInto(TemplateArgumentListInfo &List) const { 1834 getExplicitTemplateArgs()->copyInto(List); 1835 } 1836 1837 /// \brief Retrieve the location of the left angle bracket following 1838 /// the member name ('<'). 1839 SourceLocation getLAngleLoc() const { 1840 return getExplicitTemplateArgs()->LAngleLoc; 1841 } 1842 1843 /// \brief Retrieve the template arguments provided as part of this 1844 /// template-id. 1845 const TemplateArgumentLoc *getTemplateArgs() const { 1846 return getExplicitTemplateArgs()->getTemplateArgs(); 1847 } 1848 1849 /// \brief Retrieve the number of template arguments provided as 1850 /// part of this template-id. 1851 unsigned getNumTemplateArgs() const { 1852 return getExplicitTemplateArgs()->NumTemplateArgs; 1853 } 1854 1855 /// \brief Retrieve the location of the right angle bracket 1856 /// following the template arguments ('>'). 1857 SourceLocation getRAngleLoc() const { 1858 return getExplicitTemplateArgs()->RAngleLoc; 1859 } 1860 1861 virtual SourceRange getSourceRange() const { 1862 SourceRange Range; 1863 if (!isImplicitAccess()) 1864 Range.setBegin(Base->getSourceRange().getBegin()); 1865 else if (getQualifier()) 1866 Range.setBegin(getQualifierRange().getBegin()); 1867 else 1868 Range.setBegin(MemberLoc); 1869 1870 if (hasExplicitTemplateArgs()) 1871 Range.setEnd(getRAngleLoc()); 1872 else 1873 Range.setEnd(MemberLoc); 1874 return Range; 1875 } 1876 1877 static bool classof(const Stmt *T) { 1878 return T->getStmtClass() == UnresolvedMemberExprClass; 1879 } 1880 static bool classof(const UnresolvedMemberExpr *) { return true; } 1881 1882 // Iterators 1883 virtual child_iterator child_begin(); 1884 virtual child_iterator child_end(); 1885}; 1886 1887} // end namespace clang 1888 1889#endif 1890