ExprCXX.h revision 0979c805475d1ba49b5d6ef93c4d2ce6d2eab6ed
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 21namespace clang { 22 23 class CXXConstructorDecl; 24 class CXXDestructorDecl; 25 class CXXMethodDecl; 26 class CXXTemporary; 27 28//===--------------------------------------------------------------------===// 29// C++ Expressions. 30//===--------------------------------------------------------------------===// 31 32/// \brief A call to an overloaded operator written using operator 33/// syntax. 34/// 35/// Represents a call to an overloaded operator written using operator 36/// syntax, e.g., "x + y" or "*p". While semantically equivalent to a 37/// normal call, this AST node provides better information about the 38/// syntactic representation of the call. 39/// 40/// In a C++ template, this expression node kind will be used whenever 41/// any of the arguments are type-dependent. In this case, the 42/// function itself will be a (possibly empty) set of functions and 43/// function templates that were found by name lookup at template 44/// definition time. 45class CXXOperatorCallExpr : public CallExpr { 46 /// \brief The overloaded operator. 47 OverloadedOperatorKind Operator; 48 49public: 50 CXXOperatorCallExpr(ASTContext& C, OverloadedOperatorKind Op, Expr *fn, 51 Expr **args, unsigned numargs, QualType t, 52 SourceLocation operatorloc) 53 : CallExpr(C, CXXOperatorCallExprClass, fn, args, numargs, t, operatorloc), 54 Operator(Op) {} 55 explicit CXXOperatorCallExpr(ASTContext& C, EmptyShell Empty) : 56 CallExpr(C, CXXOperatorCallExprClass, Empty) { } 57 58 59 /// getOperator - Returns the kind of overloaded operator that this 60 /// expression refers to. 61 OverloadedOperatorKind getOperator() const { return Operator; } 62 void setOperator(OverloadedOperatorKind Kind) { Operator = Kind; } 63 64 /// getOperatorLoc - Returns the location of the operator symbol in 65 /// the expression. When @c getOperator()==OO_Call, this is the 66 /// location of the right parentheses; when @c 67 /// getOperator()==OO_Subscript, this is the location of the right 68 /// bracket. 69 SourceLocation getOperatorLoc() const { return getRParenLoc(); } 70 71 virtual SourceRange getSourceRange() const; 72 73 static bool classof(const Stmt *T) { 74 return T->getStmtClass() == CXXOperatorCallExprClass; 75 } 76 static bool classof(const CXXOperatorCallExpr *) { return true; } 77}; 78 79/// CXXMemberCallExpr - Represents a call to a member function that 80/// may be written either with member call syntax (e.g., "obj.func()" 81/// or "objptr->func()") or with normal function-call syntax 82/// ("func()") within a member function that ends up calling a member 83/// function. The callee in either case is a MemberExpr that contains 84/// both the object argument and the member function, while the 85/// arguments are the arguments within the parentheses (not including 86/// the object argument). 87class CXXMemberCallExpr : public CallExpr { 88public: 89 CXXMemberCallExpr(ASTContext& C, Expr *fn, Expr **args, unsigned numargs, 90 QualType t, SourceLocation rparenloc) 91 : CallExpr(C, CXXMemberCallExprClass, fn, args, numargs, t, rparenloc) {} 92 93 /// getImplicitObjectArgument - Retrieves the implicit object 94 /// argument for the member call. For example, in "x.f(5)", this 95 /// operation would return "x". 96 Expr *getImplicitObjectArgument(); 97 98 static bool classof(const Stmt *T) { 99 return T->getStmtClass() == CXXMemberCallExprClass; 100 } 101 static bool classof(const CXXMemberCallExpr *) { return true; } 102}; 103 104/// CXXNamedCastExpr - Abstract class common to all of the C++ "named" 105/// casts, @c static_cast, @c dynamic_cast, @c reinterpret_cast, or @c 106/// const_cast. 107/// 108/// This abstract class is inherited by all of the classes 109/// representing "named" casts, e.g., CXXStaticCastExpr, 110/// CXXDynamicCastExpr, CXXReinterpretCastExpr, and CXXConstCastExpr. 111class CXXNamedCastExpr : public ExplicitCastExpr { 112private: 113 SourceLocation Loc; // the location of the casting op 114 115protected: 116 CXXNamedCastExpr(StmtClass SC, QualType ty, const CastInfo &info, Expr *op, 117 QualType writtenTy, SourceLocation l) 118 : ExplicitCastExpr(SC, ty, info, op, writtenTy), Loc(l) {} 119 120public: 121 const char *getCastName() const; 122 123 /// \brief Retrieve the location of the cast operator keyword, e.g., 124 /// "static_cast". 125 SourceLocation getOperatorLoc() const { return Loc; } 126 void setOperatorLoc(SourceLocation L) { Loc = L; } 127 128 virtual SourceRange getSourceRange() const { 129 return SourceRange(Loc, getSubExpr()->getSourceRange().getEnd()); 130 } 131 static bool classof(const Stmt *T) { 132 switch (T->getStmtClass()) { 133 case CXXNamedCastExprClass: 134 case CXXStaticCastExprClass: 135 case CXXDynamicCastExprClass: 136 case CXXReinterpretCastExprClass: 137 case CXXConstCastExprClass: 138 return true; 139 default: 140 return false; 141 } 142 } 143 static bool classof(const CXXNamedCastExpr *) { return true; } 144}; 145 146/// CXXStaticCastExpr - A C++ @c static_cast expression (C++ [expr.static.cast]). 147/// 148/// This expression node represents a C++ static cast, e.g., 149/// @c static_cast<int>(1.0). 150class CXXStaticCastExpr : public CXXNamedCastExpr { 151public: 152 CXXStaticCastExpr(QualType ty, const CastInfo &info, Expr *op, 153 QualType writtenTy, SourceLocation l) 154 : CXXNamedCastExpr(CXXStaticCastExprClass, ty, info, op, writtenTy, l) {} 155 156 static bool classof(const Stmt *T) { 157 return T->getStmtClass() == CXXStaticCastExprClass; 158 } 159 static bool classof(const CXXStaticCastExpr *) { return true; } 160}; 161 162/// CXXDynamicCastExpr - A C++ @c dynamic_cast expression 163/// (C++ [expr.dynamic.cast]), which may perform a run-time check to 164/// determine how to perform the type cast. 165/// 166/// This expression node represents a dynamic cast, e.g., 167/// @c dynamic_cast<Derived*>(BasePtr). 168class CXXDynamicCastExpr : public CXXNamedCastExpr { 169public: 170 CXXDynamicCastExpr(QualType ty, CastKind kind, Expr *op, QualType writtenTy, 171 SourceLocation l) 172 : CXXNamedCastExpr(CXXDynamicCastExprClass, ty, kind, op, writtenTy, l) {} 173 174 static bool classof(const Stmt *T) { 175 return T->getStmtClass() == CXXDynamicCastExprClass; 176 } 177 static bool classof(const CXXDynamicCastExpr *) { return true; } 178}; 179 180/// CXXReinterpretCastExpr - A C++ @c reinterpret_cast expression (C++ 181/// [expr.reinterpret.cast]), which provides a differently-typed view 182/// of a value but performs no actual work at run time. 183/// 184/// This expression node represents a reinterpret cast, e.g., 185/// @c reinterpret_cast<int>(VoidPtr). 186class CXXReinterpretCastExpr : public CXXNamedCastExpr { 187public: 188 CXXReinterpretCastExpr(QualType ty, Expr *op, QualType writtenTy, 189 SourceLocation l) 190 : CXXNamedCastExpr(CXXReinterpretCastExprClass, ty, CK_BitCast, op, 191 writtenTy, l) {} 192 193 static bool classof(const Stmt *T) { 194 return T->getStmtClass() == CXXReinterpretCastExprClass; 195 } 196 static bool classof(const CXXReinterpretCastExpr *) { return true; } 197}; 198 199/// CXXConstCastExpr - A C++ @c const_cast expression (C++ [expr.const.cast]), 200/// which can remove type qualifiers but does not change the underlying value. 201/// 202/// This expression node represents a const cast, e.g., 203/// @c const_cast<char*>(PtrToConstChar). 204class CXXConstCastExpr : public CXXNamedCastExpr { 205public: 206 CXXConstCastExpr(QualType ty, Expr *op, QualType writtenTy, 207 SourceLocation l) 208 : CXXNamedCastExpr(CXXConstCastExprClass, ty, CK_NoOp, op, writtenTy, l) {} 209 210 static bool classof(const Stmt *T) { 211 return T->getStmtClass() == CXXConstCastExprClass; 212 } 213 static bool classof(const CXXConstCastExpr *) { return true; } 214}; 215 216/// CXXBoolLiteralExpr - [C++ 2.13.5] C++ Boolean Literal. 217/// 218class CXXBoolLiteralExpr : public Expr { 219 bool Value; 220 SourceLocation Loc; 221public: 222 CXXBoolLiteralExpr(bool val, QualType Ty, SourceLocation l) : 223 Expr(CXXBoolLiteralExprClass, Ty), Value(val), Loc(l) {} 224 225 bool getValue() const { return Value; } 226 227 virtual SourceRange getSourceRange() const { return SourceRange(Loc); } 228 229 static bool classof(const Stmt *T) { 230 return T->getStmtClass() == CXXBoolLiteralExprClass; 231 } 232 static bool classof(const CXXBoolLiteralExpr *) { return true; } 233 234 // Iterators 235 virtual child_iterator child_begin(); 236 virtual child_iterator child_end(); 237}; 238 239/// CXXNullPtrLiteralExpr - [C++0x 2.14.7] C++ Pointer Literal 240class CXXNullPtrLiteralExpr : public Expr { 241 SourceLocation Loc; 242public: 243 CXXNullPtrLiteralExpr(QualType Ty, SourceLocation l) : 244 Expr(CXXNullPtrLiteralExprClass, Ty), Loc(l) {} 245 246 virtual SourceRange getSourceRange() const { return SourceRange(Loc); } 247 248 static bool classof(const Stmt *T) { 249 return T->getStmtClass() == CXXNullPtrLiteralExprClass; 250 } 251 static bool classof(const CXXNullPtrLiteralExpr *) { return true; } 252 253 virtual child_iterator child_begin(); 254 virtual child_iterator child_end(); 255}; 256 257/// CXXTypeidExpr - A C++ @c typeid expression (C++ [expr.typeid]), which gets 258/// the type_info that corresponds to the supplied type, or the (possibly 259/// dynamic) type of the supplied expression. 260/// 261/// This represents code like @c typeid(int) or @c typeid(*objPtr) 262class CXXTypeidExpr : public Expr { 263private: 264 bool isTypeOp : 1; 265 union { 266 void *Ty; 267 Stmt *Ex; 268 } Operand; 269 SourceRange Range; 270 271public: 272 CXXTypeidExpr(bool isTypeOp, void *op, QualType Ty, const SourceRange r) : 273 Expr(CXXTypeidExprClass, Ty, 274 // typeid is never type-dependent (C++ [temp.dep.expr]p4) 275 false, 276 // typeid is value-dependent if the type or expression are dependent 277 (isTypeOp ? QualType::getFromOpaquePtr(op)->isDependentType() 278 : static_cast<Expr*>(op)->isValueDependent())), 279 isTypeOp(isTypeOp), Range(r) { 280 if (isTypeOp) 281 Operand.Ty = op; 282 else 283 // op was an Expr*, so cast it back to that to be safe 284 Operand.Ex = static_cast<Expr*>(op); 285 } 286 287 bool isTypeOperand() const { return isTypeOp; } 288 QualType getTypeOperand() const { 289 assert(isTypeOperand() && "Cannot call getTypeOperand for typeid(expr)"); 290 return QualType::getFromOpaquePtr(Operand.Ty); 291 } 292 Expr* getExprOperand() const { 293 assert(!isTypeOperand() && "Cannot call getExprOperand for typeid(type)"); 294 return static_cast<Expr*>(Operand.Ex); 295 } 296 297 virtual SourceRange getSourceRange() const { 298 return Range; 299 } 300 static bool classof(const Stmt *T) { 301 return T->getStmtClass() == CXXTypeidExprClass; 302 } 303 static bool classof(const CXXTypeidExpr *) { return true; } 304 305 // Iterators 306 virtual child_iterator child_begin(); 307 virtual child_iterator child_end(); 308}; 309 310/// CXXThisExpr - Represents the "this" expression in C++, which is a 311/// pointer to the object on which the current member function is 312/// executing (C++ [expr.prim]p3). Example: 313/// 314/// @code 315/// class Foo { 316/// public: 317/// void bar(); 318/// void test() { this->bar(); } 319/// }; 320/// @endcode 321class CXXThisExpr : public Expr { 322 SourceLocation Loc; 323 324public: 325 CXXThisExpr(SourceLocation L, QualType Type) 326 : Expr(CXXThisExprClass, Type, 327 // 'this' is type-dependent if the class type of the enclosing 328 // member function is dependent (C++ [temp.dep.expr]p2) 329 Type->isDependentType(), Type->isDependentType()), 330 Loc(L) { } 331 332 virtual SourceRange getSourceRange() const { return SourceRange(Loc); } 333 334 static bool classof(const Stmt *T) { 335 return T->getStmtClass() == CXXThisExprClass; 336 } 337 static bool classof(const CXXThisExpr *) { return true; } 338 339 // Iterators 340 virtual child_iterator child_begin(); 341 virtual child_iterator child_end(); 342}; 343 344/// CXXThrowExpr - [C++ 15] C++ Throw Expression. This handles 345/// 'throw' and 'throw' assignment-expression. When 346/// assignment-expression isn't present, Op will be null. 347/// 348class CXXThrowExpr : public Expr { 349 Stmt *Op; 350 SourceLocation ThrowLoc; 351public: 352 // Ty is the void type which is used as the result type of the 353 // exepression. The l is the location of the throw keyword. expr 354 // can by null, if the optional expression to throw isn't present. 355 CXXThrowExpr(Expr *expr, QualType Ty, SourceLocation l) : 356 Expr(CXXThrowExprClass, Ty, false, false), Op(expr), ThrowLoc(l) {} 357 const Expr *getSubExpr() const { return cast_or_null<Expr>(Op); } 358 Expr *getSubExpr() { return cast_or_null<Expr>(Op); } 359 void setSubExpr(Expr *E) { Op = E; } 360 361 SourceLocation getThrowLoc() const { return ThrowLoc; } 362 void setThrowLoc(SourceLocation L) { ThrowLoc = L; } 363 364 virtual SourceRange getSourceRange() const { 365 if (getSubExpr() == 0) 366 return SourceRange(ThrowLoc, ThrowLoc); 367 return SourceRange(ThrowLoc, getSubExpr()->getSourceRange().getEnd()); 368 } 369 370 static bool classof(const Stmt *T) { 371 return T->getStmtClass() == CXXThrowExprClass; 372 } 373 static bool classof(const CXXThrowExpr *) { return true; } 374 375 // Iterators 376 virtual child_iterator child_begin(); 377 virtual child_iterator child_end(); 378}; 379 380/// CXXDefaultArgExpr - C++ [dcl.fct.default]. This wraps up a 381/// function call argument that was created from the corresponding 382/// parameter's default argument, when the call did not explicitly 383/// supply arguments for all of the parameters. 384class CXXDefaultArgExpr : public Expr { 385 ParmVarDecl *Param; 386 387protected: 388 CXXDefaultArgExpr(StmtClass SC, ParmVarDecl *param) 389 : Expr(SC, param->hasUnparsedDefaultArg() ? 390 param->getType().getNonReferenceType() 391 : param->getDefaultArg()->getType()), 392 Param(param) { } 393 394public: 395 // Param is the parameter whose default argument is used by this 396 // expression. 397 static CXXDefaultArgExpr *Create(ASTContext &C, ParmVarDecl *Param) { 398 return new (C) CXXDefaultArgExpr(CXXDefaultArgExprClass, Param); 399 } 400 401 // Retrieve the parameter that the argument was created from. 402 const ParmVarDecl *getParam() const { return Param; } 403 ParmVarDecl *getParam() { return Param; } 404 405 // Retrieve the actual argument to the function call. 406 const Expr *getExpr() const { return Param->getDefaultArg(); } 407 Expr *getExpr() { return Param->getDefaultArg(); } 408 409 virtual SourceRange getSourceRange() const { 410 // Default argument expressions have no representation in the 411 // source, so they have an empty source range. 412 return SourceRange(); 413 } 414 415 static bool classof(const Stmt *T) { 416 return T->getStmtClass() == CXXDefaultArgExprClass; 417 } 418 static bool classof(const CXXDefaultArgExpr *) { return true; } 419 420 // Iterators 421 virtual child_iterator child_begin(); 422 virtual child_iterator child_end(); 423}; 424 425/// CXXTemporary - Represents a C++ temporary. 426class CXXTemporary { 427 /// Destructor - The destructor that needs to be called. 428 const CXXDestructorDecl *Destructor; 429 430 CXXTemporary(const CXXDestructorDecl *destructor) 431 : Destructor(destructor) { } 432 ~CXXTemporary() { } 433 434public: 435 static CXXTemporary *Create(ASTContext &C, 436 const CXXDestructorDecl *Destructor); 437 438 void Destroy(ASTContext &Ctx); 439 440 const CXXDestructorDecl *getDestructor() const { return Destructor; } 441}; 442 443/// CXXBindTemporaryExpr - Represents binding an expression to a temporary, 444/// so its destructor can be called later. 445class CXXBindTemporaryExpr : public Expr { 446 CXXTemporary *Temp; 447 448 Stmt *SubExpr; 449 450 CXXBindTemporaryExpr(CXXTemporary *temp, Expr* subexpr) 451 : Expr(CXXBindTemporaryExprClass, 452 subexpr->getType()), Temp(temp), SubExpr(subexpr) { } 453 ~CXXBindTemporaryExpr() { } 454 455protected: 456 virtual void DoDestroy(ASTContext &C); 457 458public: 459 static CXXBindTemporaryExpr *Create(ASTContext &C, CXXTemporary *Temp, 460 Expr* SubExpr); 461 462 CXXTemporary *getTemporary() { return Temp; } 463 const CXXTemporary *getTemporary() const { return Temp; } 464 465 const Expr *getSubExpr() const { return cast<Expr>(SubExpr); } 466 Expr *getSubExpr() { return cast<Expr>(SubExpr); } 467 void setSubExpr(Expr *E) { SubExpr = E; } 468 469 virtual SourceRange getSourceRange() const { return SourceRange(); } 470 471 // Implement isa/cast/dyncast/etc. 472 static bool classof(const Stmt *T) { 473 return T->getStmtClass() == CXXBindTemporaryExprClass; 474 } 475 static bool classof(const CXXBindTemporaryExpr *) { return true; } 476 477 // Iterators 478 virtual child_iterator child_begin(); 479 virtual child_iterator child_end(); 480}; 481 482/// CXXConstructExpr - Represents a call to a C++ constructor. 483class CXXConstructExpr : public Expr { 484 CXXConstructorDecl *Constructor; 485 486 bool Elidable; 487 488 Stmt **Args; 489 unsigned NumArgs; 490 491protected: 492 CXXConstructExpr(ASTContext &C, StmtClass SC, QualType T, 493 CXXConstructorDecl *d, bool elidable, 494 Expr **args, unsigned numargs); 495 ~CXXConstructExpr() { } 496 497 virtual void DoDestroy(ASTContext &C); 498 499public: 500 static CXXConstructExpr *Create(ASTContext &C, QualType T, 501 CXXConstructorDecl *D, bool Elidable, 502 Expr **Args, unsigned NumArgs); 503 504 505 CXXConstructorDecl* getConstructor() const { return Constructor; } 506 507 /// \brief Whether this construction is elidable. 508 bool isElidable() const { return Elidable; } 509 510 typedef ExprIterator arg_iterator; 511 typedef ConstExprIterator const_arg_iterator; 512 513 arg_iterator arg_begin() { return Args; } 514 arg_iterator arg_end() { return Args + NumArgs; } 515 const_arg_iterator arg_begin() const { return Args; } 516 const_arg_iterator arg_end() const { return Args + NumArgs; } 517 518 unsigned getNumArgs() const { return NumArgs; } 519 520 /// setArg - Set the specified argument. 521 void setArg(unsigned Arg, Expr *ArgExpr) { 522 assert(Arg < NumArgs && "Arg access out of range!"); 523 Args[Arg] = ArgExpr; 524 } 525 526 virtual SourceRange getSourceRange() const { return SourceRange(); } 527 528 static bool classof(const Stmt *T) { 529 return T->getStmtClass() == CXXConstructExprClass || 530 T->getStmtClass() == CXXTemporaryObjectExprClass; 531 } 532 static bool classof(const CXXConstructExpr *) { return true; } 533 534 // Iterators 535 virtual child_iterator child_begin(); 536 virtual child_iterator child_end(); 537}; 538 539/// CXXFunctionalCastExpr - Represents an explicit C++ type conversion 540/// that uses "functional" notion (C++ [expr.type.conv]). Example: @c 541/// x = int(0.5); 542class CXXFunctionalCastExpr : public ExplicitCastExpr { 543 CXXMethodDecl *TypeConversionMethod; 544 SourceLocation TyBeginLoc; 545 SourceLocation RParenLoc; 546public: 547 CXXFunctionalCastExpr(QualType ty, QualType writtenTy, 548 SourceLocation tyBeginLoc, CastKind kind, 549 Expr *castExpr, CXXMethodDecl *typeConversionMethod, 550 SourceLocation rParenLoc) : 551 ExplicitCastExpr(CXXFunctionalCastExprClass, ty, kind, castExpr, writtenTy), 552 TypeConversionMethod(typeConversionMethod), 553 TyBeginLoc(tyBeginLoc), RParenLoc(rParenLoc) {} 554 555 CXXMethodDecl *getTypeConversionMethod() const 556 { return TypeConversionMethod; } 557 SourceLocation getTypeBeginLoc() const { return TyBeginLoc; } 558 SourceLocation getRParenLoc() const { return RParenLoc; } 559 560 virtual SourceRange getSourceRange() const { 561 return SourceRange(TyBeginLoc, RParenLoc); 562 } 563 static bool classof(const Stmt *T) { 564 return T->getStmtClass() == CXXFunctionalCastExprClass; 565 } 566 static bool classof(const CXXFunctionalCastExpr *) { return true; } 567}; 568 569/// @brief Represents a C++ functional cast expression that builds a 570/// temporary object. 571/// 572/// This expression type represents a C++ "functional" cast 573/// (C++[expr.type.conv]) with N != 1 arguments that invokes a 574/// constructor to build a temporary object. If N == 0 but no 575/// constructor will be called (because the functional cast is 576/// performing a value-initialized an object whose class type has no 577/// user-declared constructors), CXXZeroInitValueExpr will represent 578/// the functional cast. Finally, with N == 1 arguments the functional 579/// cast expression will be represented by CXXFunctionalCastExpr. 580/// Example: 581/// @code 582/// struct X { X(int, float); } 583/// 584/// X create_X() { 585/// return X(1, 3.14f); // creates a CXXTemporaryObjectExpr 586/// }; 587/// @endcode 588class CXXTemporaryObjectExpr : public CXXConstructExpr { 589 SourceLocation TyBeginLoc; 590 SourceLocation RParenLoc; 591 592public: 593 CXXTemporaryObjectExpr(ASTContext &C, CXXConstructorDecl *Cons, 594 QualType writtenTy, SourceLocation tyBeginLoc, 595 Expr **Args,unsigned NumArgs, 596 SourceLocation rParenLoc); 597 598 ~CXXTemporaryObjectExpr() { } 599 600 SourceLocation getTypeBeginLoc() const { return TyBeginLoc; } 601 SourceLocation getRParenLoc() const { return RParenLoc; } 602 603 virtual SourceRange getSourceRange() const { 604 return SourceRange(TyBeginLoc, RParenLoc); 605 } 606 static bool classof(const Stmt *T) { 607 return T->getStmtClass() == CXXTemporaryObjectExprClass; 608 } 609 static bool classof(const CXXTemporaryObjectExpr *) { return true; } 610}; 611 612/// CXXZeroInitValueExpr - [C++ 5.2.3p2] 613/// Expression "T()" which creates a value-initialized rvalue of type 614/// T, which is either a non-class type or a class type without any 615/// user-defined constructors. 616/// 617class CXXZeroInitValueExpr : public Expr { 618 SourceLocation TyBeginLoc; 619 SourceLocation RParenLoc; 620 621public: 622 CXXZeroInitValueExpr(QualType ty, SourceLocation tyBeginLoc, 623 SourceLocation rParenLoc ) : 624 Expr(CXXZeroInitValueExprClass, ty, false, false), 625 TyBeginLoc(tyBeginLoc), RParenLoc(rParenLoc) {} 626 627 SourceLocation getTypeBeginLoc() const { return TyBeginLoc; } 628 SourceLocation getRParenLoc() const { return RParenLoc; } 629 630 /// @brief Whether this initialization expression was 631 /// implicitly-generated. 632 bool isImplicit() const { 633 return TyBeginLoc.isInvalid() && RParenLoc.isInvalid(); 634 } 635 636 virtual SourceRange getSourceRange() const { 637 return SourceRange(TyBeginLoc, RParenLoc); 638 } 639 640 static bool classof(const Stmt *T) { 641 return T->getStmtClass() == CXXZeroInitValueExprClass; 642 } 643 static bool classof(const CXXZeroInitValueExpr *) { return true; } 644 645 // Iterators 646 virtual child_iterator child_begin(); 647 virtual child_iterator child_end(); 648}; 649 650/// CXXConditionDeclExpr - Condition declaration of a if/switch/while/for 651/// statement, e.g: "if (int x = f()) {...}". 652/// The main difference with DeclRefExpr is that CXXConditionDeclExpr owns the 653/// decl that it references. 654/// 655class CXXConditionDeclExpr : public DeclRefExpr { 656public: 657 CXXConditionDeclExpr(SourceLocation startLoc, 658 SourceLocation eqLoc, VarDecl *var) 659 : DeclRefExpr(CXXConditionDeclExprClass, var, 660 var->getType().getNonReferenceType(), startLoc, 661 var->getType()->isDependentType(), 662 /*FIXME:integral constant?*/ 663 var->getType()->isDependentType()) {} 664 665 SourceLocation getStartLoc() const { return getLocation(); } 666 667 VarDecl *getVarDecl() { return cast<VarDecl>(getDecl()); } 668 const VarDecl *getVarDecl() const { return cast<VarDecl>(getDecl()); } 669 670 virtual SourceRange getSourceRange() const { 671 return SourceRange(getStartLoc(), getVarDecl()->getInit()->getLocEnd()); 672 } 673 674 static bool classof(const Stmt *T) { 675 return T->getStmtClass() == CXXConditionDeclExprClass; 676 } 677 static bool classof(const CXXConditionDeclExpr *) { return true; } 678 679 // Iterators 680 virtual child_iterator child_begin(); 681 virtual child_iterator child_end(); 682}; 683 684/// CXXNewExpr - A new expression for memory allocation and constructor calls, 685/// e.g: "new CXXNewExpr(foo)". 686class CXXNewExpr : public Expr { 687 // Was the usage ::new, i.e. is the global new to be used? 688 bool GlobalNew : 1; 689 // Was the form (type-id) used? Otherwise, it was new-type-id. 690 bool ParenTypeId : 1; 691 // Is there an initializer? If not, built-ins are uninitialized, else they're 692 // value-initialized. 693 bool Initializer : 1; 694 // Do we allocate an array? If so, the first SubExpr is the size expression. 695 bool Array : 1; 696 // The number of placement new arguments. 697 unsigned NumPlacementArgs : 14; 698 // The number of constructor arguments. This may be 1 even for non-class 699 // types; use the pseudo copy constructor. 700 unsigned NumConstructorArgs : 14; 701 // Contains an optional array size expression, any number of optional 702 // placement arguments, and any number of optional constructor arguments, 703 // in that order. 704 Stmt **SubExprs; 705 // Points to the allocation function used. 706 FunctionDecl *OperatorNew; 707 // Points to the deallocation function used in case of error. May be null. 708 FunctionDecl *OperatorDelete; 709 // Points to the constructor used. Cannot be null if AllocType is a record; 710 // it would still point at the default constructor (even an implicit one). 711 // Must be null for all other types. 712 CXXConstructorDecl *Constructor; 713 714 SourceLocation StartLoc; 715 SourceLocation EndLoc; 716 717public: 718 CXXNewExpr(bool globalNew, FunctionDecl *operatorNew, Expr **placementArgs, 719 unsigned numPlaceArgs, bool ParenTypeId, Expr *arraySize, 720 CXXConstructorDecl *constructor, bool initializer, 721 Expr **constructorArgs, unsigned numConsArgs, 722 FunctionDecl *operatorDelete, QualType ty, 723 SourceLocation startLoc, SourceLocation endLoc); 724 ~CXXNewExpr() { 725 delete[] SubExprs; 726 } 727 728 QualType getAllocatedType() const { 729 assert(getType()->isPointerType()); 730 return getType()->getAs<PointerType>()->getPointeeType(); 731 } 732 733 FunctionDecl *getOperatorNew() const { return OperatorNew; } 734 FunctionDecl *getOperatorDelete() const { return OperatorDelete; } 735 CXXConstructorDecl *getConstructor() const { return Constructor; } 736 737 bool isArray() const { return Array; } 738 Expr *getArraySize() { 739 return Array ? cast<Expr>(SubExprs[0]) : 0; 740 } 741 const Expr *getArraySize() const { 742 return Array ? cast<Expr>(SubExprs[0]) : 0; 743 } 744 745 unsigned getNumPlacementArgs() const { return NumPlacementArgs; } 746 Expr *getPlacementArg(unsigned i) { 747 assert(i < NumPlacementArgs && "Index out of range"); 748 return cast<Expr>(SubExprs[Array + i]); 749 } 750 const Expr *getPlacementArg(unsigned i) const { 751 assert(i < NumPlacementArgs && "Index out of range"); 752 return cast<Expr>(SubExprs[Array + i]); 753 } 754 755 bool isGlobalNew() const { return GlobalNew; } 756 bool isParenTypeId() const { return ParenTypeId; } 757 bool hasInitializer() const { return Initializer; } 758 759 unsigned getNumConstructorArgs() const { return NumConstructorArgs; } 760 Expr *getConstructorArg(unsigned i) { 761 assert(i < NumConstructorArgs && "Index out of range"); 762 return cast<Expr>(SubExprs[Array + NumPlacementArgs + i]); 763 } 764 const Expr *getConstructorArg(unsigned i) const { 765 assert(i < NumConstructorArgs && "Index out of range"); 766 return cast<Expr>(SubExprs[Array + NumPlacementArgs + i]); 767 } 768 769 typedef ExprIterator arg_iterator; 770 typedef ConstExprIterator const_arg_iterator; 771 772 arg_iterator placement_arg_begin() { 773 return SubExprs + Array; 774 } 775 arg_iterator placement_arg_end() { 776 return SubExprs + Array + getNumPlacementArgs(); 777 } 778 const_arg_iterator placement_arg_begin() const { 779 return SubExprs + Array; 780 } 781 const_arg_iterator placement_arg_end() const { 782 return SubExprs + Array + getNumPlacementArgs(); 783 } 784 785 arg_iterator constructor_arg_begin() { 786 return SubExprs + Array + getNumPlacementArgs(); 787 } 788 arg_iterator constructor_arg_end() { 789 return SubExprs + Array + getNumPlacementArgs() + getNumConstructorArgs(); 790 } 791 const_arg_iterator constructor_arg_begin() const { 792 return SubExprs + Array + getNumPlacementArgs(); 793 } 794 const_arg_iterator constructor_arg_end() const { 795 return SubExprs + Array + getNumPlacementArgs() + getNumConstructorArgs(); 796 } 797 798 virtual SourceRange getSourceRange() const { 799 return SourceRange(StartLoc, EndLoc); 800 } 801 802 static bool classof(const Stmt *T) { 803 return T->getStmtClass() == CXXNewExprClass; 804 } 805 static bool classof(const CXXNewExpr *) { return true; } 806 807 // Iterators 808 virtual child_iterator child_begin(); 809 virtual child_iterator child_end(); 810}; 811 812/// CXXDeleteExpr - A delete expression for memory deallocation and destructor 813/// calls, e.g. "delete[] pArray". 814class CXXDeleteExpr : public Expr { 815 // Is this a forced global delete, i.e. "::delete"? 816 bool GlobalDelete : 1; 817 // Is this the array form of delete, i.e. "delete[]"? 818 bool ArrayForm : 1; 819 // Points to the operator delete overload that is used. Could be a member. 820 FunctionDecl *OperatorDelete; 821 // The pointer expression to be deleted. 822 Stmt *Argument; 823 // Location of the expression. 824 SourceLocation Loc; 825public: 826 CXXDeleteExpr(QualType ty, bool globalDelete, bool arrayForm, 827 FunctionDecl *operatorDelete, Expr *arg, SourceLocation loc) 828 : Expr(CXXDeleteExprClass, ty, false, false), GlobalDelete(globalDelete), 829 ArrayForm(arrayForm), OperatorDelete(operatorDelete), Argument(arg), 830 Loc(loc) { } 831 832 bool isGlobalDelete() const { return GlobalDelete; } 833 bool isArrayForm() const { return ArrayForm; } 834 835 FunctionDecl *getOperatorDelete() const { return OperatorDelete; } 836 837 Expr *getArgument() { return cast<Expr>(Argument); } 838 const Expr *getArgument() const { return cast<Expr>(Argument); } 839 840 virtual SourceRange getSourceRange() const { 841 return SourceRange(Loc, Argument->getLocEnd()); 842 } 843 844 static bool classof(const Stmt *T) { 845 return T->getStmtClass() == CXXDeleteExprClass; 846 } 847 static bool classof(const CXXDeleteExpr *) { return true; } 848 849 // Iterators 850 virtual child_iterator child_begin(); 851 virtual child_iterator child_end(); 852}; 853 854/// \brief Represents the name of a function that has not been 855/// resolved to any declaration. 856/// 857/// Unresolved function names occur when a function name is 858/// encountered prior to an open parentheses ('(') in a C++ function 859/// call, and the function name itself did not resolve to a 860/// declaration. These function names can only be resolved when they 861/// form the postfix-expression of a function call, so that 862/// argument-dependent lookup finds declarations corresponding to 863/// these functions. 864 865/// @code 866/// template<typename T> void f(T x) { 867/// g(x); // g is an unresolved function name (that is also a dependent name) 868/// } 869/// @endcode 870class UnresolvedFunctionNameExpr : public Expr { 871 /// The name that was present in the source 872 DeclarationName Name; 873 874 /// The location of this name in the source code 875 SourceLocation Loc; 876 877public: 878 UnresolvedFunctionNameExpr(DeclarationName N, QualType T, SourceLocation L) 879 : Expr(UnresolvedFunctionNameExprClass, T, false, false), Name(N), Loc(L) { } 880 881 /// \brief Retrieves the name that occurred in the source code. 882 DeclarationName getName() const { return Name; } 883 884 /// getLocation - Retrieves the location in the source code where 885 /// the name occurred. 886 SourceLocation getLocation() const { return Loc; } 887 888 virtual SourceRange getSourceRange() const { return SourceRange(Loc); } 889 890 static bool classof(const Stmt *T) { 891 return T->getStmtClass() == UnresolvedFunctionNameExprClass; 892 } 893 static bool classof(const UnresolvedFunctionNameExpr *) { return true; } 894 895 // Iterators 896 virtual child_iterator child_begin(); 897 virtual child_iterator child_end(); 898}; 899 900/// UnaryTypeTraitExpr - A GCC or MS unary type trait, as used in the 901/// implementation of TR1/C++0x type trait templates. 902/// Example: 903/// __is_pod(int) == true 904/// __is_enum(std::string) == false 905class UnaryTypeTraitExpr : public Expr { 906 /// UTT - The trait. 907 UnaryTypeTrait UTT; 908 909 /// Loc - The location of the type trait keyword. 910 SourceLocation Loc; 911 912 /// RParen - The location of the closing paren. 913 SourceLocation RParen; 914 915 /// QueriedType - The type we're testing. 916 QualType QueriedType; 917 918public: 919 UnaryTypeTraitExpr(SourceLocation loc, UnaryTypeTrait utt, QualType queried, 920 SourceLocation rparen, QualType ty) 921 : Expr(UnaryTypeTraitExprClass, ty, false, queried->isDependentType()), 922 UTT(utt), Loc(loc), RParen(rparen), QueriedType(queried) { } 923 924 virtual SourceRange getSourceRange() const { return SourceRange(Loc, RParen);} 925 926 UnaryTypeTrait getTrait() const { return UTT; } 927 928 QualType getQueriedType() const { return QueriedType; } 929 930 bool EvaluateTrait(ASTContext&) const; 931 932 static bool classof(const Stmt *T) { 933 return T->getStmtClass() == UnaryTypeTraitExprClass; 934 } 935 static bool classof(const UnaryTypeTraitExpr *) { return true; } 936 937 // Iterators 938 virtual child_iterator child_begin(); 939 virtual child_iterator child_end(); 940}; 941 942/// QualifiedDeclRefExpr - A reference to a declared variable, 943/// function, enum, etc., that includes a qualification, e.g., 944/// "N::foo". 945class QualifiedDeclRefExpr : public DeclRefExpr { 946 /// QualifierRange - The source range that covers the 947 /// nested-name-specifier. 948 SourceRange QualifierRange; 949 950 /// \brief The nested-name-specifier that qualifies this declaration 951 /// name. 952 NestedNameSpecifier *NNS; 953 954public: 955 QualifiedDeclRefExpr(NamedDecl *d, QualType t, SourceLocation l, bool TD, 956 bool VD, SourceRange R, NestedNameSpecifier *NNS) 957 : DeclRefExpr(QualifiedDeclRefExprClass, d, t, l, TD, VD), 958 QualifierRange(R), NNS(NNS) { } 959 960 /// \brief Retrieve the source range of the nested-name-specifier. 961 SourceRange getQualifierRange() const { return QualifierRange; } 962 963 /// \brief Retrieve the nested-name-specifier that qualifies this 964 /// declaration. 965 NestedNameSpecifier *getQualifier() const { return NNS; } 966 967 virtual SourceRange getSourceRange() const { 968 return SourceRange(QualifierRange.getBegin(), getLocation()); 969 } 970 971 static bool classof(const Stmt *T) { 972 return T->getStmtClass() == QualifiedDeclRefExprClass; 973 } 974 static bool classof(const QualifiedDeclRefExpr *) { return true; } 975}; 976 977/// \brief A qualified reference to a name whose declaration cannot 978/// yet be resolved. 979/// 980/// UnresolvedDeclRefExpr is similar to QualifiedDeclRefExpr in that 981/// it expresses a qualified reference to a declaration such as 982/// X<T>::value. The difference, however, is that an 983/// UnresolvedDeclRefExpr node is used only within C++ templates when 984/// the qualification (e.g., X<T>::) refers to a dependent type. In 985/// this case, X<T>::value cannot resolve to a declaration because the 986/// declaration will differ from on instantiation of X<T> to the 987/// next. Therefore, UnresolvedDeclRefExpr keeps track of the 988/// qualifier (X<T>::) and the name of the entity being referenced 989/// ("value"). Such expressions will instantiate to 990/// QualifiedDeclRefExprs. 991class UnresolvedDeclRefExpr : public Expr { 992 /// The name of the entity we will be referencing. 993 DeclarationName Name; 994 995 /// Location of the name of the declaration we're referencing. 996 SourceLocation Loc; 997 998 /// QualifierRange - The source range that covers the 999 /// nested-name-specifier. 1000 SourceRange QualifierRange; 1001 1002 /// \brief The nested-name-specifier that qualifies this unresolved 1003 /// declaration name. 1004 NestedNameSpecifier *NNS; 1005 1006 /// \brief Whether this expr is an address of (&) operand. 1007 bool IsAddressOfOperand; 1008 1009public: 1010 UnresolvedDeclRefExpr(DeclarationName N, QualType T, SourceLocation L, 1011 SourceRange R, NestedNameSpecifier *NNS, 1012 bool IsAddressOfOperand) 1013 : Expr(UnresolvedDeclRefExprClass, T, true, true), 1014 Name(N), Loc(L), QualifierRange(R), NNS(NNS), 1015 IsAddressOfOperand(IsAddressOfOperand) { } 1016 1017 /// \brief Retrieve the name that this expression refers to. 1018 DeclarationName getDeclName() const { return Name; } 1019 1020 /// \brief Retrieve the location of the name within the expression. 1021 SourceLocation getLocation() const { return Loc; } 1022 1023 /// \brief Retrieve the source range of the nested-name-specifier. 1024 SourceRange getQualifierRange() const { return QualifierRange; } 1025 1026 /// \brief Retrieve the nested-name-specifier that qualifies this 1027 /// declaration. 1028 NestedNameSpecifier *getQualifier() const { return NNS; } 1029 1030 /// \brief Retrieve whether this is an address of (&) operand. 1031 1032 bool isAddressOfOperand() const { return IsAddressOfOperand; } 1033 virtual SourceRange getSourceRange() const { 1034 return SourceRange(QualifierRange.getBegin(), getLocation()); 1035 } 1036 1037 static bool classof(const Stmt *T) { 1038 return T->getStmtClass() == UnresolvedDeclRefExprClass; 1039 } 1040 static bool classof(const UnresolvedDeclRefExpr *) { return true; } 1041 1042 virtual StmtIterator child_begin(); 1043 virtual StmtIterator child_end(); 1044}; 1045 1046/// \brief An expression that refers to a C++ template-id, such as 1047/// @c isa<FunctionDecl>. 1048class TemplateIdRefExpr : public Expr { 1049 /// \brief If this template-id was qualified-id, e.g., @c std::sort<int>, 1050 /// this nested name specifier contains the @c std::. 1051 NestedNameSpecifier *Qualifier; 1052 1053 /// \brief If this template-id was a qualified-id, e.g., @c std::sort<int>, 1054 /// this covers the source code range of the @c std::. 1055 SourceRange QualifierRange; 1056 1057 /// \brief The actual template to which this template-id refers. 1058 TemplateName Template; 1059 1060 /// \brief The source location of the template name. 1061 SourceLocation TemplateNameLoc; 1062 1063 /// \brief The source location of the left angle bracket ('<'); 1064 SourceLocation LAngleLoc; 1065 1066 /// \brief The source location of the right angle bracket ('>'); 1067 SourceLocation RAngleLoc; 1068 1069 /// \brief The number of template arguments in TemplateArgs. 1070 unsigned NumTemplateArgs; 1071 1072 TemplateIdRefExpr(QualType T, 1073 NestedNameSpecifier *Qualifier, SourceRange QualifierRange, 1074 TemplateName Template, SourceLocation TemplateNameLoc, 1075 SourceLocation LAngleLoc, 1076 const TemplateArgument *TemplateArgs, 1077 unsigned NumTemplateArgs, 1078 SourceLocation RAngleLoc); 1079 1080 virtual void DoDestroy(ASTContext &Context); 1081 1082public: 1083 static TemplateIdRefExpr * 1084 Create(ASTContext &Context, QualType T, 1085 NestedNameSpecifier *Qualifier, SourceRange QualifierRange, 1086 TemplateName Template, SourceLocation TemplateNameLoc, 1087 SourceLocation LAngleLoc, const TemplateArgument *TemplateArgs, 1088 unsigned NumTemplateArgs, SourceLocation RAngleLoc); 1089 1090 /// \brief Retrieve the nested name specifier used to qualify the name of 1091 /// this template-id, e.g., the "std::sort" in @c std::sort<int>, or NULL 1092 /// if this template-id was an unqualified-id. 1093 NestedNameSpecifier *getQualifier() const { return Qualifier; } 1094 1095 /// \brief Retrieve the source range describing the nested name specifier 1096 /// used to qualified the name of this template-id, if the name was qualified. 1097 SourceRange getQualifierRange() const { return QualifierRange; } 1098 1099 /// \brief Retrieve the name of the template referenced, e.g., "sort" in 1100 /// @c std::sort<int>; 1101 TemplateName getTemplateName() const { return Template; } 1102 1103 /// \brief Retrieve the location of the name of the template referenced, e.g., 1104 /// the location of "sort" in @c std::sort<int>. 1105 SourceLocation getTemplateNameLoc() const { return TemplateNameLoc; } 1106 1107 /// \brief Retrieve the location of the left angle bracket following the 1108 /// template name ('<'). 1109 SourceLocation getLAngleLoc() const { return LAngleLoc; } 1110 1111 /// \brief Retrieve the template arguments provided as part of this 1112 /// template-id. 1113 const TemplateArgument *getTemplateArgs() const { 1114 return reinterpret_cast<const TemplateArgument *>(this + 1); 1115 } 1116 1117 /// \brief Retrieve the number of template arguments provided as part of this 1118 /// template-id. 1119 unsigned getNumTemplateArgs() const { return NumTemplateArgs; } 1120 1121 /// \brief Retrieve the location of the right angle bracket following the 1122 /// template arguments ('>'). 1123 SourceLocation getRAngleLoc() const { return RAngleLoc; } 1124 1125 virtual SourceRange getSourceRange() const { 1126 return SourceRange(Qualifier? QualifierRange.getBegin() : TemplateNameLoc, 1127 RAngleLoc); 1128 } 1129 1130 // Iterators 1131 virtual child_iterator child_begin(); 1132 virtual child_iterator child_end(); 1133 1134 static bool classof(const Stmt *T) { 1135 return T->getStmtClass() == TemplateIdRefExprClass; 1136 } 1137 static bool classof(const TemplateIdRefExpr *) { return true; } 1138}; 1139 1140class CXXExprWithTemporaries : public Expr { 1141 Stmt *SubExpr; 1142 1143 CXXTemporary **Temps; 1144 unsigned NumTemps; 1145 1146 bool ShouldDestroyTemps; 1147 1148 CXXExprWithTemporaries(Expr *SubExpr, CXXTemporary **Temps, 1149 unsigned NumTemps, bool ShouldDestroyTemps); 1150 ~CXXExprWithTemporaries(); 1151 1152protected: 1153 virtual void DoDestroy(ASTContext &C); 1154 1155public: 1156 static CXXExprWithTemporaries *Create(ASTContext &C, Expr *SubExpr, 1157 CXXTemporary **Temps, unsigned NumTemps, 1158 bool ShouldDestroyTemporaries); 1159 1160 unsigned getNumTemporaries() const { return NumTemps; } 1161 CXXTemporary *getTemporary(unsigned i) { 1162 assert(i < NumTemps && "Index out of range"); 1163 return Temps[i]; 1164 } 1165 const CXXTemporary *getTemporary(unsigned i) const { 1166 assert(i < NumTemps && "Index out of range"); 1167 return Temps[i]; 1168 } 1169 1170 bool shouldDestroyTemporaries() const { return ShouldDestroyTemps; } 1171 1172 void removeLastTemporary() { NumTemps--; } 1173 1174 Expr *getSubExpr() { return cast<Expr>(SubExpr); } 1175 const Expr *getSubExpr() const { return cast<Expr>(SubExpr); } 1176 void setSubExpr(Expr *E) { SubExpr = E; } 1177 1178 virtual SourceRange getSourceRange() const { return SourceRange(); } 1179 1180 // Implement isa/cast/dyncast/etc. 1181 static bool classof(const Stmt *T) { 1182 return T->getStmtClass() == CXXExprWithTemporariesClass; 1183 } 1184 static bool classof(const CXXExprWithTemporaries *) { return true; } 1185 1186 // Iterators 1187 virtual child_iterator child_begin(); 1188 virtual child_iterator child_end(); 1189}; 1190 1191/// \brief Describes an explicit type conversion that uses functional 1192/// notion but could not be resolved because one or more arguments are 1193/// type-dependent. 1194/// 1195/// The explicit type conversions expressed by 1196/// CXXUnresolvedConstructExpr have the form \c T(a1, a2, ..., aN), 1197/// where \c T is some type and \c a1, a2, ..., aN are values, and 1198/// either \C T is a dependent type or one or more of the \c a's is 1199/// type-dependent. For example, this would occur in a template such 1200/// as: 1201/// 1202/// \code 1203/// template<typename T, typename A1> 1204/// inline T make_a(const A1& a1) { 1205/// return T(a1); 1206/// } 1207/// \endcode 1208/// 1209/// When the returned expression is instantiated, it may resolve to a 1210/// constructor call, conversion function call, or some kind of type 1211/// conversion. 1212class CXXUnresolvedConstructExpr : public Expr { 1213 /// \brief The starting location of the type 1214 SourceLocation TyBeginLoc; 1215 1216 /// \brief The type being constructed. 1217 QualType Type; 1218 1219 /// \brief The location of the left parentheses ('('). 1220 SourceLocation LParenLoc; 1221 1222 /// \brief The location of the right parentheses (')'). 1223 SourceLocation RParenLoc; 1224 1225 /// \brief The number of arguments used to construct the type. 1226 unsigned NumArgs; 1227 1228 CXXUnresolvedConstructExpr(SourceLocation TyBegin, 1229 QualType T, 1230 SourceLocation LParenLoc, 1231 Expr **Args, 1232 unsigned NumArgs, 1233 SourceLocation RParenLoc); 1234 1235public: 1236 static CXXUnresolvedConstructExpr *Create(ASTContext &C, 1237 SourceLocation TyBegin, 1238 QualType T, 1239 SourceLocation LParenLoc, 1240 Expr **Args, 1241 unsigned NumArgs, 1242 SourceLocation RParenLoc); 1243 1244 /// \brief Retrieve the source location where the type begins. 1245 SourceLocation getTypeBeginLoc() const { return TyBeginLoc; } 1246 void setTypeBeginLoc(SourceLocation L) { TyBeginLoc = L; } 1247 1248 /// \brief Retrieve the type that is being constructed, as specified 1249 /// in the source code. 1250 QualType getTypeAsWritten() const { return Type; } 1251 void setTypeAsWritten(QualType T) { Type = T; } 1252 1253 /// \brief Retrieve the location of the left parentheses ('(') that 1254 /// precedes the argument list. 1255 SourceLocation getLParenLoc() const { return LParenLoc; } 1256 void setLParenLoc(SourceLocation L) { LParenLoc = L; } 1257 1258 /// \brief Retrieve the location of the right parentheses (')') that 1259 /// follows the argument list. 1260 SourceLocation getRParenLoc() const { return RParenLoc; } 1261 void setRParenLoc(SourceLocation L) { RParenLoc = L; } 1262 1263 /// \brief Retrieve the number of arguments. 1264 unsigned arg_size() const { return NumArgs; } 1265 1266 typedef Expr** arg_iterator; 1267 arg_iterator arg_begin() { return reinterpret_cast<Expr**>(this + 1); } 1268 arg_iterator arg_end() { return arg_begin() + NumArgs; } 1269 1270 Expr *getArg(unsigned I) { 1271 assert(I < NumArgs && "Argument index out-of-range"); 1272 return *(arg_begin() + I); 1273 } 1274 1275 virtual SourceRange getSourceRange() const { 1276 return SourceRange(TyBeginLoc, RParenLoc); 1277 } 1278 static bool classof(const Stmt *T) { 1279 return T->getStmtClass() == CXXUnresolvedConstructExprClass; 1280 } 1281 static bool classof(const CXXUnresolvedConstructExpr *) { return true; } 1282 1283 // Iterators 1284 virtual child_iterator child_begin(); 1285 virtual child_iterator child_end(); 1286}; 1287 1288/// \brief Represents a C++ member access expression that was written using 1289/// either a qualified name, e.g., "x->Base::f()" or originally had 1290/// explicitly-specified template arguments (TODO!). 1291class CXXAdornedMemberExpr : public MemberExpr { 1292 /// QualifierRange - The source range that covers the 1293 /// nested-name-specifier. 1294 SourceRange QualifierRange; 1295 1296 /// \brief The nested-name-specifier that qualifies this declaration 1297 /// name. 1298 NestedNameSpecifier *Qualifier; 1299 1300public: 1301 CXXAdornedMemberExpr(Expr *base, bool isarrow, NestedNameSpecifier *Qual, 1302 SourceRange QualRange, NamedDecl *memberdecl, 1303 SourceLocation l, QualType ty) 1304 : MemberExpr(CXXAdornedMemberExprClass, base, isarrow, memberdecl, l, ty), 1305 QualifierRange(QualRange), Qualifier(Qual) { } 1306 1307 /// \brief Retrieve the source range of the nested-name-specifier that 1308 /// qualifies the member name. 1309 SourceRange getQualifierRange() const { return QualifierRange; } 1310 1311 /// \brief Retrieve the nested-name-specifier that qualifies the 1312 /// member reference expression. 1313 NestedNameSpecifier *getQualifier() const { return Qualifier; } 1314 1315 /// \brief Determines whether this adorned C++ member expression has a 1316 /// nested-name-specifier associated with it. 1317 bool hasQualifier() const { return getQualifier() != 0; } 1318 1319 static bool classof(const Stmt *T) { 1320 return T->getStmtClass() == CXXAdornedMemberExprClass; 1321 } 1322 static bool classof(const CXXAdornedMemberExpr *) { return true; } 1323}; 1324 1325/// \brief Represents a C++ member access expression where the actual member 1326/// referenced could not be resolved, e.g., because the base expression or the 1327/// member name was dependent. 1328class CXXUnresolvedMemberExpr : public Expr { 1329 /// \brief The expression for the base pointer or class reference, 1330 /// e.g., the \c x in x.f. 1331 Stmt *Base; 1332 1333 /// \brief Whether this member expression used the '->' operator or 1334 /// the '.' operator. 1335 bool IsArrow; 1336 1337 /// \brief The location of the '->' or '.' operator. 1338 SourceLocation OperatorLoc; 1339 1340 /// \brief The member to which this member expression refers, which 1341 /// can be name, overloaded operator, or destructor. 1342 /// FIXME: could also be a template-id, and we might have a 1343 /// nested-name-specifier as well. 1344 DeclarationName Member; 1345 1346 /// \brief The location of the member name. 1347 SourceLocation MemberLoc; 1348 1349public: 1350 CXXUnresolvedMemberExpr(ASTContext &C, 1351 Expr *Base, bool IsArrow, 1352 SourceLocation OperatorLoc, 1353 DeclarationName Member, 1354 SourceLocation MemberLoc) 1355 : Expr(CXXUnresolvedMemberExprClass, C.DependentTy, true, true), 1356 Base(Base), IsArrow(IsArrow), OperatorLoc(OperatorLoc), 1357 Member(Member), MemberLoc(MemberLoc) { } 1358 1359 /// \brief Retrieve the base object of this member expressions, 1360 /// e.g., the \c x in \c x.m. 1361 Expr *getBase() { return cast<Expr>(Base); } 1362 void setBase(Expr *E) { Base = E; } 1363 1364 /// \brief Determine whether this member expression used the '->' 1365 /// operator; otherwise, it used the '.' operator. 1366 bool isArrow() const { return IsArrow; } 1367 void setArrow(bool A) { IsArrow = A; } 1368 1369 /// \brief Retrieve the location of the '->' or '.' operator. 1370 SourceLocation getOperatorLoc() const { return OperatorLoc; } 1371 void setOperatorLoc(SourceLocation L) { OperatorLoc = L; } 1372 1373 /// \brief Retrieve the name of the member that this expression 1374 /// refers to. 1375 DeclarationName getMember() const { return Member; } 1376 void setMember(DeclarationName N) { Member = N; } 1377 1378 // \brief Retrieve the location of the name of the member that this 1379 // expression refers to. 1380 SourceLocation getMemberLoc() const { return MemberLoc; } 1381 void setMemberLoc(SourceLocation L) { MemberLoc = L; } 1382 1383 virtual SourceRange getSourceRange() const { 1384 return SourceRange(Base->getSourceRange().getBegin(), 1385 MemberLoc); 1386 } 1387 static bool classof(const Stmt *T) { 1388 return T->getStmtClass() == CXXUnresolvedMemberExprClass; 1389 } 1390 static bool classof(const CXXUnresolvedMemberExpr *) { return true; } 1391 1392 // Iterators 1393 virtual child_iterator child_begin(); 1394 virtual child_iterator child_end(); 1395}; 1396 1397} // end namespace clang 1398 1399#endif 1400