ExprCXX.h revision f54741e6465692d3bdbae974ac3beeeab92e4a95
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 CXXTemporary; 26 27//===--------------------------------------------------------------------===// 28// C++ Expressions. 29//===--------------------------------------------------------------------===// 30 31/// \brief A call to an overloaded operator written using operator 32/// syntax. 33/// 34/// Represents a call to an overloaded operator written using operator 35/// syntax, e.g., "x + y" or "*p". While semantically equivalent to a 36/// normal call, this AST node provides better information about the 37/// syntactic representation of the call. 38/// 39/// In a C++ template, this expression node kind will be used whenever 40/// any of the arguments are type-dependent. In this case, the 41/// function itself will be a (possibly empty) set of functions and 42/// function templates that were found by name lookup at template 43/// definition time. 44class CXXOperatorCallExpr : public CallExpr { 45 /// \brief The overloaded operator. 46 OverloadedOperatorKind Operator; 47 48public: 49 CXXOperatorCallExpr(ASTContext& C, OverloadedOperatorKind Op, Expr *fn, 50 Expr **args, unsigned numargs, QualType t, 51 SourceLocation operatorloc) 52 : CallExpr(C, CXXOperatorCallExprClass, fn, args, numargs, t, operatorloc), 53 Operator(Op) {} 54 55 /// getOperator - Returns the kind of overloaded operator that this 56 /// expression refers to. 57 OverloadedOperatorKind getOperator() const { return Operator; } 58 59 /// getOperatorLoc - Returns the location of the operator symbol in 60 /// the expression. When @c getOperator()==OO_Call, this is the 61 /// location of the right parentheses; when @c 62 /// getOperator()==OO_Subscript, this is the location of the right 63 /// bracket. 64 SourceLocation getOperatorLoc() const { return getRParenLoc(); } 65 66 virtual SourceRange getSourceRange() const; 67 68 static bool classof(const Stmt *T) { 69 return T->getStmtClass() == CXXOperatorCallExprClass; 70 } 71 static bool classof(const CXXOperatorCallExpr *) { return true; } 72}; 73 74/// CXXMemberCallExpr - Represents a call to a member function that 75/// may be written either with member call syntax (e.g., "obj.func()" 76/// or "objptr->func()") or with normal function-call syntax 77/// ("func()") within a member function that ends up calling a member 78/// function. The callee in either case is a MemberExpr that contains 79/// both the object argument and the member function, while the 80/// arguments are the arguments within the parentheses (not including 81/// the object argument). 82class CXXMemberCallExpr : public CallExpr { 83public: 84 CXXMemberCallExpr(ASTContext& C, Expr *fn, Expr **args, unsigned numargs, 85 QualType t, SourceLocation rparenloc) 86 : CallExpr(C, CXXMemberCallExprClass, fn, args, numargs, t, rparenloc) {} 87 88 /// getImplicitObjectArgument - Retrieves the implicit object 89 /// argument for the member call. For example, in "x.f(5)", this 90 /// operation would return "x". 91 Expr *getImplicitObjectArgument(); 92 93 static bool classof(const Stmt *T) { 94 return T->getStmtClass() == CXXMemberCallExprClass; 95 } 96 static bool classof(const CXXMemberCallExpr *) { return true; } 97}; 98 99/// CXXNamedCastExpr - Abstract class common to all of the C++ "named" 100/// casts, @c static_cast, @c dynamic_cast, @c reinterpret_cast, or @c 101/// const_cast. 102/// 103/// This abstract class is inherited by all of the classes 104/// representing "named" casts, e.g., CXXStaticCastExpr, 105/// CXXDynamicCastExpr, CXXReinterpretCastExpr, and CXXConstCastExpr. 106class CXXNamedCastExpr : public ExplicitCastExpr { 107private: 108 SourceLocation Loc; // the location of the casting op 109 110protected: 111 CXXNamedCastExpr(StmtClass SC, QualType ty, Expr *op, QualType writtenTy, 112 SourceLocation l) 113 : ExplicitCastExpr(SC, ty, op, writtenTy), Loc(l) {} 114 115public: 116 const char *getCastName() const; 117 118 /// \brief Retrieve the location of the cast operator keyword, e.g., 119 /// "static_cast". 120 SourceLocation getOperatorLoc() const { return Loc; } 121 void setOperatorLoc(SourceLocation L) { Loc = L; } 122 123 virtual SourceRange getSourceRange() const { 124 return SourceRange(Loc, getSubExpr()->getSourceRange().getEnd()); 125 } 126 static bool classof(const Stmt *T) { 127 switch (T->getStmtClass()) { 128 case CXXNamedCastExprClass: 129 case CXXStaticCastExprClass: 130 case CXXDynamicCastExprClass: 131 case CXXReinterpretCastExprClass: 132 case CXXConstCastExprClass: 133 return true; 134 default: 135 return false; 136 } 137 } 138 static bool classof(const CXXNamedCastExpr *) { return true; } 139}; 140 141/// CXXStaticCastExpr - A C++ @c static_cast expression (C++ [expr.static.cast]). 142/// 143/// This expression node represents a C++ static cast, e.g., 144/// @c static_cast<int>(1.0). 145class CXXStaticCastExpr : public CXXNamedCastExpr { 146public: 147 CXXStaticCastExpr(QualType ty, Expr *op, QualType writtenTy, SourceLocation l) 148 : CXXNamedCastExpr(CXXStaticCastExprClass, ty, op, writtenTy, l) {} 149 150 static bool classof(const Stmt *T) { 151 return T->getStmtClass() == CXXStaticCastExprClass; 152 } 153 static bool classof(const CXXStaticCastExpr *) { return true; } 154}; 155 156/// CXXDynamicCastExpr - A C++ @c dynamic_cast expression 157/// (C++ [expr.dynamic.cast]), which may perform a run-time check to 158/// determine how to perform the type cast. 159/// 160/// This expression node represents a dynamic cast, e.g., 161/// @c dynamic_cast<Derived*>(BasePtr). 162class CXXDynamicCastExpr : public CXXNamedCastExpr { 163public: 164 CXXDynamicCastExpr(QualType ty, Expr *op, QualType writtenTy, SourceLocation l) 165 : CXXNamedCastExpr(CXXDynamicCastExprClass, ty, op, writtenTy, l) {} 166 167 static bool classof(const Stmt *T) { 168 return T->getStmtClass() == CXXDynamicCastExprClass; 169 } 170 static bool classof(const CXXDynamicCastExpr *) { return true; } 171}; 172 173/// CXXReinterpretCastExpr - A C++ @c reinterpret_cast expression (C++ 174/// [expr.reinterpret.cast]), which provides a differently-typed view 175/// of a value but performs no actual work at run time. 176/// 177/// This expression node represents a reinterpret cast, e.g., 178/// @c reinterpret_cast<int>(VoidPtr). 179class CXXReinterpretCastExpr : public CXXNamedCastExpr { 180public: 181 CXXReinterpretCastExpr(QualType ty, Expr *op, QualType writtenTy, 182 SourceLocation l) 183 : CXXNamedCastExpr(CXXReinterpretCastExprClass, ty, op, writtenTy, l) {} 184 185 static bool classof(const Stmt *T) { 186 return T->getStmtClass() == CXXReinterpretCastExprClass; 187 } 188 static bool classof(const CXXReinterpretCastExpr *) { return true; } 189}; 190 191/// CXXConstCastExpr - A C++ @c const_cast expression (C++ [expr.const.cast]), 192/// which can remove type qualifiers but does not change the underlying value. 193/// 194/// This expression node represents a const cast, e.g., 195/// @c const_cast<char*>(PtrToConstChar). 196class CXXConstCastExpr : public CXXNamedCastExpr { 197public: 198 CXXConstCastExpr(QualType ty, Expr *op, QualType writtenTy, 199 SourceLocation l) 200 : CXXNamedCastExpr(CXXConstCastExprClass, ty, op, writtenTy, l) {} 201 202 static bool classof(const Stmt *T) { 203 return T->getStmtClass() == CXXConstCastExprClass; 204 } 205 static bool classof(const CXXConstCastExpr *) { return true; } 206}; 207 208/// CXXBoolLiteralExpr - [C++ 2.13.5] C++ Boolean Literal. 209/// 210class CXXBoolLiteralExpr : public Expr { 211 bool Value; 212 SourceLocation Loc; 213public: 214 CXXBoolLiteralExpr(bool val, QualType Ty, SourceLocation l) : 215 Expr(CXXBoolLiteralExprClass, Ty), Value(val), Loc(l) {} 216 217 CXXBoolLiteralExpr* Clone(ASTContext &C) const; 218 219 bool getValue() const { return Value; } 220 221 virtual SourceRange getSourceRange() const { return SourceRange(Loc); } 222 223 static bool classof(const Stmt *T) { 224 return T->getStmtClass() == CXXBoolLiteralExprClass; 225 } 226 static bool classof(const CXXBoolLiteralExpr *) { return true; } 227 228 // Iterators 229 virtual child_iterator child_begin(); 230 virtual child_iterator child_end(); 231}; 232 233/// CXXNullPtrLiteralExpr - [C++0x 2.14.7] C++ Pointer Literal 234class CXXNullPtrLiteralExpr : public Expr { 235 SourceLocation Loc; 236public: 237 CXXNullPtrLiteralExpr(QualType Ty, SourceLocation l) : 238 Expr(CXXNullPtrLiteralExprClass, Ty), Loc(l) {} 239 240 CXXNullPtrLiteralExpr* Clone(ASTContext &C) const; 241 242 virtual SourceRange getSourceRange() const { return SourceRange(Loc); } 243 244 static bool classof(const Stmt *T) { 245 return T->getStmtClass() == CXXNullPtrLiteralExprClass; 246 } 247 static bool classof(const CXXNullPtrLiteralExpr *) { return true; } 248 249 virtual child_iterator child_begin(); 250 virtual child_iterator child_end(); 251}; 252 253/// CXXTypeidExpr - A C++ @c typeid expression (C++ [expr.typeid]), which gets 254/// the type_info that corresponds to the supplied type, or the (possibly 255/// dynamic) type of the supplied expression. 256/// 257/// This represents code like @c typeid(int) or @c typeid(*objPtr) 258class CXXTypeidExpr : public Expr { 259private: 260 bool isTypeOp : 1; 261 union { 262 void *Ty; 263 Stmt *Ex; 264 } Operand; 265 SourceRange Range; 266 267public: 268 CXXTypeidExpr(bool isTypeOp, void *op, QualType Ty, const SourceRange r) : 269 Expr(CXXTypeidExprClass, Ty, 270 // typeid is never type-dependent (C++ [temp.dep.expr]p4) 271 false, 272 // typeid is value-dependent if the type or expression are dependent 273 (isTypeOp ? QualType::getFromOpaquePtr(op)->isDependentType() 274 : static_cast<Expr*>(op)->isValueDependent())), 275 isTypeOp(isTypeOp), Range(r) { 276 if (isTypeOp) 277 Operand.Ty = op; 278 else 279 // op was an Expr*, so cast it back to that to be safe 280 Operand.Ex = static_cast<Expr*>(op); 281 } 282 283 bool isTypeOperand() const { return isTypeOp; } 284 QualType getTypeOperand() const { 285 assert(isTypeOperand() && "Cannot call getTypeOperand for typeid(expr)"); 286 return QualType::getFromOpaquePtr(Operand.Ty); 287 } 288 Expr* getExprOperand() const { 289 assert(!isTypeOperand() && "Cannot call getExprOperand for typeid(type)"); 290 return static_cast<Expr*>(Operand.Ex); 291 } 292 293 virtual SourceRange getSourceRange() const { 294 return Range; 295 } 296 static bool classof(const Stmt *T) { 297 return T->getStmtClass() == CXXTypeidExprClass; 298 } 299 static bool classof(const CXXTypeidExpr *) { return true; } 300 301 // Iterators 302 virtual child_iterator child_begin(); 303 virtual child_iterator child_end(); 304}; 305 306/// CXXThisExpr - Represents the "this" expression in C++, which is a 307/// pointer to the object on which the current member function is 308/// executing (C++ [expr.prim]p3). Example: 309/// 310/// @code 311/// class Foo { 312/// public: 313/// void bar(); 314/// void test() { this->bar(); } 315/// }; 316/// @endcode 317class CXXThisExpr : public Expr { 318 SourceLocation Loc; 319 320public: 321 CXXThisExpr(SourceLocation L, QualType Type) 322 : Expr(CXXThisExprClass, Type, 323 // 'this' is type-dependent if the class type of the enclosing 324 // member function is dependent (C++ [temp.dep.expr]p2) 325 Type->isDependentType(), Type->isDependentType()), 326 Loc(L) { } 327 328 virtual SourceRange getSourceRange() const { return SourceRange(Loc); } 329 330 static bool classof(const Stmt *T) { 331 return T->getStmtClass() == CXXThisExprClass; 332 } 333 static bool classof(const CXXThisExpr *) { return true; } 334 335 // Iterators 336 virtual child_iterator child_begin(); 337 virtual child_iterator child_end(); 338}; 339 340/// CXXThrowExpr - [C++ 15] C++ Throw Expression. This handles 341/// 'throw' and 'throw' assignment-expression. When 342/// assignment-expression isn't present, Op will be null. 343/// 344class CXXThrowExpr : public Expr { 345 Stmt *Op; 346 SourceLocation ThrowLoc; 347public: 348 // Ty is the void type which is used as the result type of the 349 // exepression. The l is the location of the throw keyword. expr 350 // can by null, if the optional expression to throw isn't present. 351 CXXThrowExpr(Expr *expr, QualType Ty, SourceLocation l) : 352 Expr(CXXThrowExprClass, Ty, false, false), Op(expr), ThrowLoc(l) {} 353 const Expr *getSubExpr() const { return cast_or_null<Expr>(Op); } 354 Expr *getSubExpr() { return cast_or_null<Expr>(Op); } 355 void setSubExpr(Expr *E) { Op = E; } 356 357 SourceLocation getThrowLoc() const { return ThrowLoc; } 358 void setThrowLoc(SourceLocation L) { ThrowLoc = L; } 359 360 virtual SourceRange getSourceRange() const { 361 if (getSubExpr() == 0) 362 return SourceRange(ThrowLoc, ThrowLoc); 363 return SourceRange(ThrowLoc, getSubExpr()->getSourceRange().getEnd()); 364 } 365 366 static bool classof(const Stmt *T) { 367 return T->getStmtClass() == CXXThrowExprClass; 368 } 369 static bool classof(const CXXThrowExpr *) { return true; } 370 371 // Iterators 372 virtual child_iterator child_begin(); 373 virtual child_iterator child_end(); 374}; 375 376/// CXXDefaultArgExpr - C++ [dcl.fct.default]. This wraps up a 377/// function call argument that was created from the corresponding 378/// parameter's default argument, when the call did not explicitly 379/// supply arguments for all of the parameters. 380class CXXDefaultArgExpr : public Expr { 381 ParmVarDecl *Param; 382public: 383 // Param is the parameter whose default argument is used by this 384 // expression. 385 explicit CXXDefaultArgExpr(ParmVarDecl *param) 386 : Expr(CXXDefaultArgExprClass, 387 param->hasUnparsedDefaultArg()? param->getType().getNonReferenceType() 388 : param->getDefaultArg()->getType()), 389 Param(param) { } 390 391 // Retrieve the parameter that the argument was created from. 392 const ParmVarDecl *getParam() const { return Param; } 393 ParmVarDecl *getParam() { return Param; } 394 395 // Retrieve the actual argument to the function call. 396 const Expr *getExpr() const { return Param->getDefaultArg(); } 397 Expr *getExpr() { return Param->getDefaultArg(); } 398 399 virtual SourceRange getSourceRange() const { 400 // Default argument expressions have no representation in the 401 // source, so they have an empty source range. 402 return SourceRange(); 403 } 404 405 static bool classof(const Stmt *T) { 406 return T->getStmtClass() == CXXDefaultArgExprClass; 407 } 408 static bool classof(const CXXDefaultArgExpr *) { return true; } 409 410 // Iterators 411 virtual child_iterator child_begin(); 412 virtual child_iterator child_end(); 413}; 414 415/// CXXTemporary - Represents a C++ temporary. 416class CXXTemporary { 417 /// Destructor - The destructor that needs to be called. 418 const CXXDestructorDecl *Destructor; 419 420 CXXTemporary(const CXXDestructorDecl *destructor) 421 : Destructor(destructor) { } 422 ~CXXTemporary() { } 423 424public: 425 static CXXTemporary *Create(ASTContext &C, 426 const CXXDestructorDecl *Destructor); 427 void Destroy(ASTContext &C); 428 429 const CXXDestructorDecl *getDestructor() const { return Destructor; } 430}; 431 432/// CXXBindTemporaryExpr - Represents binding an expression to a temporary, 433/// so its destructor can be called later. 434class CXXBindTemporaryExpr : public Expr { 435 CXXTemporary *Temp; 436 437 Stmt *SubExpr; 438 439 CXXBindTemporaryExpr(CXXTemporary *temp, Expr* subexpr) 440 : Expr(CXXBindTemporaryExprClass, 441 subexpr->getType()), Temp(temp), SubExpr(subexpr) { } 442 ~CXXBindTemporaryExpr() { } 443 444public: 445 static CXXBindTemporaryExpr *Create(ASTContext &C, CXXTemporary *Temp, 446 Expr* SubExpr); 447 void Destroy(ASTContext &C); 448 449 CXXTemporary *getTemporary() { return Temp; } 450 const CXXTemporary *getTemporary() const { return Temp; } 451 452 const Expr *getSubExpr() const { return cast<Expr>(SubExpr); } 453 Expr *getSubExpr() { return cast<Expr>(SubExpr); } 454 void setSubExpr(Expr *E) { SubExpr = E; } 455 456 virtual SourceRange getSourceRange() const { return SourceRange(); } 457 458 // Implement isa/cast/dyncast/etc. 459 static bool classof(const Stmt *T) { 460 return T->getStmtClass() == CXXBindTemporaryExprClass; 461 } 462 static bool classof(const CXXBindTemporaryExpr *) { return true; } 463 464 // Iterators 465 virtual child_iterator child_begin(); 466 virtual child_iterator child_end(); 467}; 468 469/// CXXConstructExpr - Represents a call to a C++ constructor. 470class CXXConstructExpr : public Expr { 471 CXXConstructorDecl *Constructor; 472 473 bool Elidable; 474 475 Stmt **Args; 476 unsigned NumArgs; 477 478 479protected: 480 CXXConstructExpr(ASTContext &C, StmtClass SC, QualType T, 481 CXXConstructorDecl *d, bool elidable, 482 Expr **args, unsigned numargs); 483 ~CXXConstructExpr() { } 484 485public: 486 static CXXConstructExpr *Create(ASTContext &C, QualType T, 487 CXXConstructorDecl *D, bool Elidable, 488 Expr **Args, unsigned NumArgs); 489 490 void Destroy(ASTContext &C); 491 492 CXXConstructorDecl* getConstructor() const { return Constructor; } 493 494 /// \brief Whether this construction is elidable. 495 bool isElidable() const { return Elidable; } 496 497 typedef ExprIterator arg_iterator; 498 typedef ConstExprIterator const_arg_iterator; 499 500 arg_iterator arg_begin() { return Args; } 501 arg_iterator arg_end() { return Args + NumArgs; } 502 const_arg_iterator arg_begin() const { return Args; } 503 const_arg_iterator arg_end() const { return Args + NumArgs; } 504 505 unsigned getNumArgs() const { return NumArgs; } 506 507 virtual SourceRange getSourceRange() const { return SourceRange(); } 508 509 static bool classof(const Stmt *T) { 510 return T->getStmtClass() == CXXConstructExprClass || 511 T->getStmtClass() == CXXTemporaryObjectExprClass; 512 } 513 static bool classof(const CXXConstructExpr *) { return true; } 514 515 // Iterators 516 virtual child_iterator child_begin(); 517 virtual child_iterator child_end(); 518}; 519 520/// CXXFunctionalCastExpr - Represents an explicit C++ type conversion 521/// that uses "functional" notion (C++ [expr.type.conv]). Example: @c 522/// x = int(0.5); 523class CXXFunctionalCastExpr : public ExplicitCastExpr { 524 SourceLocation TyBeginLoc; 525 SourceLocation RParenLoc; 526public: 527 CXXFunctionalCastExpr(QualType ty, QualType writtenTy, 528 SourceLocation tyBeginLoc, Expr *castExpr, 529 SourceLocation rParenLoc) : 530 ExplicitCastExpr(CXXFunctionalCastExprClass, ty, castExpr, writtenTy), 531 TyBeginLoc(tyBeginLoc), RParenLoc(rParenLoc) {} 532 533 SourceLocation getTypeBeginLoc() const { return TyBeginLoc; } 534 SourceLocation getRParenLoc() const { return RParenLoc; } 535 536 virtual SourceRange getSourceRange() const { 537 return SourceRange(TyBeginLoc, RParenLoc); 538 } 539 static bool classof(const Stmt *T) { 540 return T->getStmtClass() == CXXFunctionalCastExprClass; 541 } 542 static bool classof(const CXXFunctionalCastExpr *) { return true; } 543}; 544 545/// @brief Represents a C++ functional cast expression that builds a 546/// temporary object. 547/// 548/// This expression type represents a C++ "functional" cast 549/// (C++[expr.type.conv]) with N != 1 arguments that invokes a 550/// constructor to build a temporary object. If N == 0 but no 551/// constructor will be called (because the functional cast is 552/// performing a value-initialized an object whose class type has no 553/// user-declared constructors), CXXZeroInitValueExpr will represent 554/// the functional cast. Finally, with N == 1 arguments the functional 555/// cast expression will be represented by CXXFunctionalCastExpr. 556/// Example: 557/// @code 558/// struct X { X(int, float); } 559/// 560/// X create_X() { 561/// return X(1, 3.14f); // creates a CXXTemporaryObjectExpr 562/// }; 563/// @endcode 564class CXXTemporaryObjectExpr : public CXXConstructExpr { 565 SourceLocation TyBeginLoc; 566 SourceLocation RParenLoc; 567 568public: 569 CXXTemporaryObjectExpr(ASTContext &C, CXXConstructorDecl *Cons, 570 QualType writtenTy, SourceLocation tyBeginLoc, 571 Expr **Args,unsigned NumArgs, 572 SourceLocation rParenLoc); 573 574 ~CXXTemporaryObjectExpr() { } 575 576 SourceLocation getTypeBeginLoc() const { return TyBeginLoc; } 577 SourceLocation getRParenLoc() const { return RParenLoc; } 578 579 virtual SourceRange getSourceRange() const { 580 return SourceRange(TyBeginLoc, RParenLoc); 581 } 582 static bool classof(const Stmt *T) { 583 return T->getStmtClass() == CXXTemporaryObjectExprClass; 584 } 585 static bool classof(const CXXTemporaryObjectExpr *) { return true; } 586}; 587 588/// CXXZeroInitValueExpr - [C++ 5.2.3p2] 589/// Expression "T()" which creates a value-initialized rvalue of type 590/// T, which is either a non-class type or a class type without any 591/// user-defined constructors. 592/// 593class CXXZeroInitValueExpr : public Expr { 594 SourceLocation TyBeginLoc; 595 SourceLocation RParenLoc; 596 597public: 598 CXXZeroInitValueExpr(QualType ty, SourceLocation tyBeginLoc, 599 SourceLocation rParenLoc ) : 600 Expr(CXXZeroInitValueExprClass, ty, false, false), 601 TyBeginLoc(tyBeginLoc), RParenLoc(rParenLoc) {} 602 603 SourceLocation getTypeBeginLoc() const { return TyBeginLoc; } 604 SourceLocation getRParenLoc() const { return RParenLoc; } 605 606 /// @brief Whether this initialization expression was 607 /// implicitly-generated. 608 bool isImplicit() const { 609 return TyBeginLoc.isInvalid() && RParenLoc.isInvalid(); 610 } 611 612 virtual SourceRange getSourceRange() const { 613 return SourceRange(TyBeginLoc, RParenLoc); 614 } 615 616 CXXZeroInitValueExpr* Clone(ASTContext &C) const; 617 618 static bool classof(const Stmt *T) { 619 return T->getStmtClass() == CXXZeroInitValueExprClass; 620 } 621 static bool classof(const CXXZeroInitValueExpr *) { return true; } 622 623 // Iterators 624 virtual child_iterator child_begin(); 625 virtual child_iterator child_end(); 626}; 627 628/// CXXConditionDeclExpr - Condition declaration of a if/switch/while/for 629/// statement, e.g: "if (int x = f()) {...}". 630/// The main difference with DeclRefExpr is that CXXConditionDeclExpr owns the 631/// decl that it references. 632/// 633class CXXConditionDeclExpr : public DeclRefExpr { 634public: 635 CXXConditionDeclExpr(SourceLocation startLoc, 636 SourceLocation eqLoc, VarDecl *var) 637 : DeclRefExpr(CXXConditionDeclExprClass, var, 638 var->getType().getNonReferenceType(), startLoc, 639 var->getType()->isDependentType(), 640 /*FIXME:integral constant?*/ 641 var->getType()->isDependentType()) {} 642 643 virtual void Destroy(ASTContext& Ctx); 644 645 SourceLocation getStartLoc() const { return getLocation(); } 646 647 VarDecl *getVarDecl() { return cast<VarDecl>(getDecl()); } 648 const VarDecl *getVarDecl() const { return cast<VarDecl>(getDecl()); } 649 650 virtual SourceRange getSourceRange() const { 651 return SourceRange(getStartLoc(), getVarDecl()->getInit()->getLocEnd()); 652 } 653 654 static bool classof(const Stmt *T) { 655 return T->getStmtClass() == CXXConditionDeclExprClass; 656 } 657 static bool classof(const CXXConditionDeclExpr *) { return true; } 658 659 // Iterators 660 virtual child_iterator child_begin(); 661 virtual child_iterator child_end(); 662}; 663 664/// CXXNewExpr - A new expression for memory allocation and constructor calls, 665/// e.g: "new CXXNewExpr(foo)". 666class CXXNewExpr : public Expr { 667 // Was the usage ::new, i.e. is the global new to be used? 668 bool GlobalNew : 1; 669 // Was the form (type-id) used? Otherwise, it was new-type-id. 670 bool ParenTypeId : 1; 671 // Is there an initializer? If not, built-ins are uninitialized, else they're 672 // value-initialized. 673 bool Initializer : 1; 674 // Do we allocate an array? If so, the first SubExpr is the size expression. 675 bool Array : 1; 676 // The number of placement new arguments. 677 unsigned NumPlacementArgs : 14; 678 // The number of constructor arguments. This may be 1 even for non-class 679 // types; use the pseudo copy constructor. 680 unsigned NumConstructorArgs : 14; 681 // Contains an optional array size expression, any number of optional 682 // placement arguments, and any number of optional constructor arguments, 683 // in that order. 684 Stmt **SubExprs; 685 // Points to the allocation function used. 686 FunctionDecl *OperatorNew; 687 // Points to the deallocation function used in case of error. May be null. 688 FunctionDecl *OperatorDelete; 689 // Points to the constructor used. Cannot be null if AllocType is a record; 690 // it would still point at the default constructor (even an implicit one). 691 // Must be null for all other types. 692 CXXConstructorDecl *Constructor; 693 694 SourceLocation StartLoc; 695 SourceLocation EndLoc; 696 697public: 698 CXXNewExpr(bool globalNew, FunctionDecl *operatorNew, Expr **placementArgs, 699 unsigned numPlaceArgs, bool ParenTypeId, Expr *arraySize, 700 CXXConstructorDecl *constructor, bool initializer, 701 Expr **constructorArgs, unsigned numConsArgs, 702 FunctionDecl *operatorDelete, QualType ty, 703 SourceLocation startLoc, SourceLocation endLoc); 704 ~CXXNewExpr() { 705 delete[] SubExprs; 706 } 707 708 QualType getAllocatedType() const { 709 assert(getType()->isPointerType()); 710 return getType()->getAsPointerType()->getPointeeType(); 711 } 712 713 FunctionDecl *getOperatorNew() const { return OperatorNew; } 714 FunctionDecl *getOperatorDelete() const { return OperatorDelete; } 715 CXXConstructorDecl *getConstructor() const { return Constructor; } 716 717 bool isArray() const { return Array; } 718 Expr *getArraySize() { 719 return Array ? cast<Expr>(SubExprs[0]) : 0; 720 } 721 const Expr *getArraySize() const { 722 return Array ? cast<Expr>(SubExprs[0]) : 0; 723 } 724 725 unsigned getNumPlacementArgs() const { return NumPlacementArgs; } 726 Expr *getPlacementArg(unsigned i) { 727 assert(i < NumPlacementArgs && "Index out of range"); 728 return cast<Expr>(SubExprs[Array + i]); 729 } 730 const Expr *getPlacementArg(unsigned i) const { 731 assert(i < NumPlacementArgs && "Index out of range"); 732 return cast<Expr>(SubExprs[Array + i]); 733 } 734 735 bool isGlobalNew() const { return GlobalNew; } 736 bool isParenTypeId() const { return ParenTypeId; } 737 bool hasInitializer() const { return Initializer; } 738 739 unsigned getNumConstructorArgs() const { return NumConstructorArgs; } 740 Expr *getConstructorArg(unsigned i) { 741 assert(i < NumConstructorArgs && "Index out of range"); 742 return cast<Expr>(SubExprs[Array + NumPlacementArgs + i]); 743 } 744 const Expr *getConstructorArg(unsigned i) const { 745 assert(i < NumConstructorArgs && "Index out of range"); 746 return cast<Expr>(SubExprs[Array + NumPlacementArgs + i]); 747 } 748 749 typedef ExprIterator arg_iterator; 750 typedef ConstExprIterator const_arg_iterator; 751 752 arg_iterator placement_arg_begin() { 753 return SubExprs + Array; 754 } 755 arg_iterator placement_arg_end() { 756 return SubExprs + Array + getNumPlacementArgs(); 757 } 758 const_arg_iterator placement_arg_begin() const { 759 return SubExprs + Array; 760 } 761 const_arg_iterator placement_arg_end() const { 762 return SubExprs + Array + getNumPlacementArgs(); 763 } 764 765 arg_iterator constructor_arg_begin() { 766 return SubExprs + Array + getNumPlacementArgs(); 767 } 768 arg_iterator constructor_arg_end() { 769 return SubExprs + Array + getNumPlacementArgs() + getNumConstructorArgs(); 770 } 771 const_arg_iterator constructor_arg_begin() const { 772 return SubExprs + Array + getNumPlacementArgs(); 773 } 774 const_arg_iterator constructor_arg_end() const { 775 return SubExprs + Array + getNumPlacementArgs() + getNumConstructorArgs(); 776 } 777 778 virtual SourceRange getSourceRange() const { 779 return SourceRange(StartLoc, EndLoc); 780 } 781 782 static bool classof(const Stmt *T) { 783 return T->getStmtClass() == CXXNewExprClass; 784 } 785 static bool classof(const CXXNewExpr *) { return true; } 786 787 // Iterators 788 virtual child_iterator child_begin(); 789 virtual child_iterator child_end(); 790}; 791 792/// CXXDeleteExpr - A delete expression for memory deallocation and destructor 793/// calls, e.g. "delete[] pArray". 794class CXXDeleteExpr : public Expr { 795 // Is this a forced global delete, i.e. "::delete"? 796 bool GlobalDelete : 1; 797 // Is this the array form of delete, i.e. "delete[]"? 798 bool ArrayForm : 1; 799 // Points to the operator delete overload that is used. Could be a member. 800 FunctionDecl *OperatorDelete; 801 // The pointer expression to be deleted. 802 Stmt *Argument; 803 // Location of the expression. 804 SourceLocation Loc; 805public: 806 CXXDeleteExpr(QualType ty, bool globalDelete, bool arrayForm, 807 FunctionDecl *operatorDelete, Expr *arg, SourceLocation loc) 808 : Expr(CXXDeleteExprClass, ty, false, false), GlobalDelete(globalDelete), 809 ArrayForm(arrayForm), OperatorDelete(operatorDelete), Argument(arg), 810 Loc(loc) { } 811 812 bool isGlobalDelete() const { return GlobalDelete; } 813 bool isArrayForm() const { return ArrayForm; } 814 815 FunctionDecl *getOperatorDelete() const { return OperatorDelete; } 816 817 Expr *getArgument() { return cast<Expr>(Argument); } 818 const Expr *getArgument() const { return cast<Expr>(Argument); } 819 820 virtual SourceRange getSourceRange() const { 821 return SourceRange(Loc, Argument->getLocEnd()); 822 } 823 824 static bool classof(const Stmt *T) { 825 return T->getStmtClass() == CXXDeleteExprClass; 826 } 827 static bool classof(const CXXDeleteExpr *) { return true; } 828 829 // Iterators 830 virtual child_iterator child_begin(); 831 virtual child_iterator child_end(); 832}; 833 834/// \brief Represents the name of a function that has not been 835/// resolved to any declaration. 836/// 837/// Unresolved function names occur when a function name is 838/// encountered prior to an open parentheses ('(') in a C++ function 839/// call, and the function name itself did not resolve to a 840/// declaration. These function names can only be resolved when they 841/// form the postfix-expression of a function call, so that 842/// argument-dependent lookup finds declarations corresponding to 843/// these functions. 844 845/// @code 846/// template<typename T> void f(T x) { 847/// g(x); // g is an unresolved function name (that is also a dependent name) 848/// } 849/// @endcode 850class UnresolvedFunctionNameExpr : public Expr { 851 /// The name that was present in the source 852 DeclarationName Name; 853 854 /// The location of this name in the source code 855 SourceLocation Loc; 856 857public: 858 UnresolvedFunctionNameExpr(DeclarationName N, QualType T, SourceLocation L) 859 : Expr(UnresolvedFunctionNameExprClass, T, false, false), Name(N), Loc(L) { } 860 861 /// \brief Retrieves the name that occurred in the source code. 862 DeclarationName getName() const { return Name; } 863 864 /// getLocation - Retrieves the location in the source code where 865 /// the name occurred. 866 SourceLocation getLocation() const { return Loc; } 867 868 virtual SourceRange getSourceRange() const { return SourceRange(Loc); } 869 870 UnresolvedFunctionNameExpr* Clone(ASTContext &C) const; 871 872 static bool classof(const Stmt *T) { 873 return T->getStmtClass() == UnresolvedFunctionNameExprClass; 874 } 875 static bool classof(const UnresolvedFunctionNameExpr *) { return true; } 876 877 // Iterators 878 virtual child_iterator child_begin(); 879 virtual child_iterator child_end(); 880}; 881 882/// UnaryTypeTraitExpr - A GCC or MS unary type trait, as used in the 883/// implementation of TR1/C++0x type trait templates. 884/// Example: 885/// __is_pod(int) == true 886/// __is_enum(std::string) == false 887class UnaryTypeTraitExpr : public Expr { 888 /// UTT - The trait. 889 UnaryTypeTrait UTT; 890 891 /// Loc - The location of the type trait keyword. 892 SourceLocation Loc; 893 894 /// RParen - The location of the closing paren. 895 SourceLocation RParen; 896 897 /// QueriedType - The type we're testing. 898 QualType QueriedType; 899 900public: 901 UnaryTypeTraitExpr(SourceLocation loc, UnaryTypeTrait utt, QualType queried, 902 SourceLocation rparen, QualType ty) 903 : Expr(UnaryTypeTraitExprClass, ty, false, queried->isDependentType()), 904 UTT(utt), Loc(loc), RParen(rparen), QueriedType(queried) { } 905 906 virtual SourceRange getSourceRange() const { return SourceRange(Loc, RParen);} 907 908 UnaryTypeTrait getTrait() const { return UTT; } 909 910 QualType getQueriedType() const { return QueriedType; } 911 912 bool EvaluateTrait() const; 913 914 static bool classof(const Stmt *T) { 915 return T->getStmtClass() == UnaryTypeTraitExprClass; 916 } 917 static bool classof(const UnaryTypeTraitExpr *) { return true; } 918 919 // Iterators 920 virtual child_iterator child_begin(); 921 virtual child_iterator child_end(); 922}; 923 924/// QualifiedDeclRefExpr - A reference to a declared variable, 925/// function, enum, etc., that includes a qualification, e.g., 926/// "N::foo". 927class QualifiedDeclRefExpr : public DeclRefExpr { 928 /// QualifierRange - The source range that covers the 929 /// nested-name-specifier. 930 SourceRange QualifierRange; 931 932 /// \brief The nested-name-specifier that qualifies this declaration 933 /// name. 934 NestedNameSpecifier *NNS; 935 936public: 937 QualifiedDeclRefExpr(NamedDecl *d, QualType t, SourceLocation l, bool TD, 938 bool VD, SourceRange R, NestedNameSpecifier *NNS) 939 : DeclRefExpr(QualifiedDeclRefExprClass, d, t, l, TD, VD), 940 QualifierRange(R), NNS(NNS) { } 941 942 /// \brief Retrieve the source range of the nested-name-specifier. 943 SourceRange getQualifierRange() const { return QualifierRange; } 944 945 /// \brief Retrieve the nested-name-specifier that qualifies this 946 /// declaration. 947 NestedNameSpecifier *getQualifier() const { return NNS; } 948 949 virtual SourceRange getSourceRange() const { 950 return SourceRange(QualifierRange.getBegin(), getLocation()); 951 } 952 953 static bool classof(const Stmt *T) { 954 return T->getStmtClass() == QualifiedDeclRefExprClass; 955 } 956 static bool classof(const QualifiedDeclRefExpr *) { return true; } 957}; 958 959/// \brief A qualified reference to a name whose declaration cannot 960/// yet be resolved. 961/// 962/// UnresolvedDeclRefExpr is similar to QualifiedDeclRefExpr in that 963/// it expresses a qualified reference to a declaration such as 964/// X<T>::value. The difference, however, is that an 965/// UnresolvedDeclRefExpr node is used only within C++ templates when 966/// the qualification (e.g., X<T>::) refers to a dependent type. In 967/// this case, X<T>::value cannot resolve to a declaration because the 968/// declaration will differ from on instantiation of X<T> to the 969/// next. Therefore, UnresolvedDeclRefExpr keeps track of the 970/// qualifier (X<T>::) and the name of the entity being referenced 971/// ("value"). Such expressions will instantiate to 972/// QualifiedDeclRefExprs. 973class UnresolvedDeclRefExpr : public Expr { 974 /// The name of the entity we will be referencing. 975 DeclarationName Name; 976 977 /// Location of the name of the declaration we're referencing. 978 SourceLocation Loc; 979 980 /// QualifierRange - The source range that covers the 981 /// nested-name-specifier. 982 SourceRange QualifierRange; 983 984 /// \brief The nested-name-specifier that qualifies this unresolved 985 /// declaration name. 986 NestedNameSpecifier *NNS; 987 988public: 989 UnresolvedDeclRefExpr(DeclarationName N, QualType T, SourceLocation L, 990 SourceRange R, NestedNameSpecifier *NNS) 991 : Expr(UnresolvedDeclRefExprClass, T, true, true), 992 Name(N), Loc(L), QualifierRange(R), NNS(NNS) { } 993 994 /// \brief Retrieve the name that this expression refers to. 995 DeclarationName getDeclName() const { return Name; } 996 997 /// \brief Retrieve the location of the name within the expression. 998 SourceLocation getLocation() const { return Loc; } 999 1000 /// \brief Retrieve the source range of the nested-name-specifier. 1001 SourceRange getQualifierRange() const { return QualifierRange; } 1002 1003 /// \brief Retrieve the nested-name-specifier that qualifies this 1004 /// declaration. 1005 NestedNameSpecifier *getQualifier() const { return NNS; } 1006 1007 virtual SourceRange getSourceRange() const { 1008 return SourceRange(QualifierRange.getBegin(), getLocation()); 1009 } 1010 1011 static bool classof(const Stmt *T) { 1012 return T->getStmtClass() == UnresolvedDeclRefExprClass; 1013 } 1014 static bool classof(const UnresolvedDeclRefExpr *) { return true; } 1015 1016 virtual StmtIterator child_begin(); 1017 virtual StmtIterator child_end(); 1018}; 1019 1020class CXXExprWithTemporaries : public Expr { 1021 Stmt *SubExpr; 1022 1023 CXXTemporary **Temps; 1024 unsigned NumTemps; 1025 1026 bool ShouldDestroyTemps; 1027 1028 CXXExprWithTemporaries(Expr *SubExpr, CXXTemporary **Temps, 1029 unsigned NumTemps, bool ShouldDestroyTemps); 1030 ~CXXExprWithTemporaries(); 1031 1032public: 1033 static CXXExprWithTemporaries *Create(ASTContext &C, Expr *SubExpr, 1034 CXXTemporary **Temps, unsigned NumTemps, 1035 bool ShouldDestroyTemporaries); 1036 void Destroy(ASTContext &C); 1037 1038 unsigned getNumTemporaries() const { return NumTemps; } 1039 CXXTemporary *getTemporary(unsigned i) { 1040 assert(i < NumTemps && "Index out of range"); 1041 return Temps[i]; 1042 } 1043 const CXXTemporary *getTemporary(unsigned i) const { 1044 assert(i < NumTemps && "Index out of range"); 1045 return Temps[i]; 1046 } 1047 1048 bool shouldDestroyTemporaries() const { return ShouldDestroyTemps; } 1049 1050 void removeLastTemporary() { NumTemps--; } 1051 1052 Expr *getSubExpr() { return cast<Expr>(SubExpr); } 1053 const Expr *getSubExpr() const { return cast<Expr>(SubExpr); } 1054 void setSubExpr(Expr *E) { SubExpr = E; } 1055 1056 virtual SourceRange getSourceRange() const { return SourceRange(); } 1057 1058 // Implement isa/cast/dyncast/etc. 1059 static bool classof(const Stmt *T) { 1060 return T->getStmtClass() == CXXExprWithTemporariesClass; 1061 } 1062 static bool classof(const CXXExprWithTemporaries *) { return true; } 1063 1064 // Iterators 1065 virtual child_iterator child_begin(); 1066 virtual child_iterator child_end(); 1067}; 1068 1069/// \brief Describes an explicit type conversion that uses functional 1070/// notion but could not be resolved because one or more arguments are 1071/// type-dependent. 1072/// 1073/// The explicit type conversions expressed by 1074/// CXXUnresolvedConstructExpr have the form \c T(a1, a2, ..., aN), 1075/// where \c T is some type and \c a1, a2, ..., aN are values, and 1076/// either \C T is a dependent type or one or more of the \c a's is 1077/// type-dependent. For example, this would occur in a template such 1078/// as: 1079/// 1080/// \code 1081/// template<typename T, typename A1> 1082/// inline T make_a(const A1& a1) { 1083/// return T(a1); 1084/// } 1085/// \endcode 1086/// 1087/// When the returned expression is instantiated, it may resolve to a 1088/// constructor call, conversion function call, or some kind of type 1089/// conversion. 1090class CXXUnresolvedConstructExpr : public Expr { 1091 /// \brief The starting location of the type 1092 SourceLocation TyBeginLoc; 1093 1094 /// \brief The type being constructed. 1095 QualType Type; 1096 1097 /// \brief The location of the left parentheses ('('). 1098 SourceLocation LParenLoc; 1099 1100 /// \brief The location of the right parentheses (')'). 1101 SourceLocation RParenLoc; 1102 1103 /// \brief The number of arguments used to construct the type. 1104 unsigned NumArgs; 1105 1106 CXXUnresolvedConstructExpr(SourceLocation TyBegin, 1107 QualType T, 1108 SourceLocation LParenLoc, 1109 Expr **Args, 1110 unsigned NumArgs, 1111 SourceLocation RParenLoc); 1112 1113public: 1114 static CXXUnresolvedConstructExpr *Create(ASTContext &C, 1115 SourceLocation TyBegin, 1116 QualType T, 1117 SourceLocation LParenLoc, 1118 Expr **Args, 1119 unsigned NumArgs, 1120 SourceLocation RParenLoc); 1121 1122 /// \brief Retrieve the source location where the type begins. 1123 SourceLocation getTypeBeginLoc() const { return TyBeginLoc; } 1124 void setTypeBeginLoc(SourceLocation L) { TyBeginLoc = L; } 1125 1126 /// \brief Retrieve the type that is being constructed, as specified 1127 /// in the source code. 1128 QualType getTypeAsWritten() const { return Type; } 1129 void setTypeAsWritten(QualType T) { Type = T; } 1130 1131 /// \brief Retrieve the location of the left parentheses ('(') that 1132 /// precedes the argument list. 1133 SourceLocation getLParenLoc() const { return LParenLoc; } 1134 void setLParenLoc(SourceLocation L) { LParenLoc = L; } 1135 1136 /// \brief Retrieve the location of the right parentheses (')') that 1137 /// follows the argument list. 1138 SourceLocation getRParenLoc() const { return RParenLoc; } 1139 void setRParenLoc(SourceLocation L) { RParenLoc = L; } 1140 1141 /// \brief Retrieve the number of arguments. 1142 unsigned arg_size() const { return NumArgs; } 1143 1144 typedef Expr** arg_iterator; 1145 arg_iterator arg_begin() { return reinterpret_cast<Expr**>(this + 1); } 1146 arg_iterator arg_end() { return arg_begin() + NumArgs; } 1147 1148 Expr *getArg(unsigned I) { 1149 assert(I < NumArgs && "Argument index out-of-range"); 1150 return *(arg_begin() + I); 1151 } 1152 1153 virtual SourceRange getSourceRange() const { 1154 return SourceRange(TyBeginLoc, RParenLoc); 1155 } 1156 static bool classof(const Stmt *T) { 1157 return T->getStmtClass() == CXXUnresolvedConstructExprClass; 1158 } 1159 static bool classof(const CXXUnresolvedConstructExpr *) { return true; } 1160 1161 // Iterators 1162 virtual child_iterator child_begin(); 1163 virtual child_iterator child_end(); 1164}; 1165 1166/// \brief 1167class CXXUnresolvedMemberExpr : public Expr { 1168 /// \brief The expression for the base pointer or class reference, 1169 /// e.g., the \c x in x.f. 1170 Stmt *Base; 1171 1172 /// \brief Whether this member expression used the '->' operator or 1173 /// the '.' operator. 1174 bool IsArrow; 1175 1176 /// \brief The location of the '->' or '.' operator. 1177 SourceLocation OperatorLoc; 1178 1179 /// \brief The member to which this member expression refers, which 1180 /// can be name, overloaded operator, or destructor. 1181 /// FIXME: could also be a template-id, and we might have a 1182 /// nested-name-specifier as well. 1183 DeclarationName Member; 1184 1185 /// \brief The location of the member name. 1186 SourceLocation MemberLoc; 1187 1188public: 1189 CXXUnresolvedMemberExpr(ASTContext &C, 1190 Expr *Base, bool IsArrow, 1191 SourceLocation OperatorLoc, 1192 DeclarationName Member, 1193 SourceLocation MemberLoc) 1194 : Expr(CXXUnresolvedMemberExprClass, C.DependentTy, true, true), 1195 Base(Base), IsArrow(IsArrow), OperatorLoc(OperatorLoc), 1196 Member(Member), MemberLoc(MemberLoc) { } 1197 1198 /// \brief Retrieve the base object of this member expressions, 1199 /// e.g., the \c x in \c x.m. 1200 Expr *getBase() { return cast<Expr>(Base); } 1201 void setBase(Expr *E) { Base = E; } 1202 1203 /// \brief Determine whether this member expression used the '->' 1204 /// operator; otherwise, it used the '.' operator. 1205 bool isArrow() const { return IsArrow; } 1206 void setArrow(bool A) { IsArrow = A; } 1207 1208 /// \brief Retrieve the location of the '->' or '.' operator. 1209 SourceLocation getOperatorLoc() const { return OperatorLoc; } 1210 void setOperatorLoc(SourceLocation L) { OperatorLoc = L; } 1211 1212 /// \brief Retrieve the name of the member that this expression 1213 /// refers to. 1214 DeclarationName getMember() const { return Member; } 1215 void setMember(DeclarationName N) { Member = N; } 1216 1217 // \brief Retrieve the location of the name of the member that this 1218 // expression refers to. 1219 SourceLocation getMemberLoc() const { return MemberLoc; } 1220 void setMemberLoc(SourceLocation L) { MemberLoc = L; } 1221 1222 virtual SourceRange getSourceRange() const { 1223 return SourceRange(Base->getSourceRange().getBegin(), 1224 MemberLoc); 1225 } 1226 static bool classof(const Stmt *T) { 1227 return T->getStmtClass() == CXXUnresolvedMemberExprClass; 1228 } 1229 static bool classof(const CXXUnresolvedMemberExpr *) { return true; } 1230 1231 // Iterators 1232 virtual child_iterator child_begin(); 1233 virtual child_iterator child_end(); 1234}; 1235 1236} // end namespace clang 1237 1238#endif 1239