Stmt.h revision f5afb5e1fa1877a4adf3328e5be31b2f959d82eb
1//===--- Stmt.h - Classes for representing statements -----------*- 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 Stmt interface and subclasses. 11// 12//===----------------------------------------------------------------------===// 13 14#ifndef LLVM_CLANG_AST_STMT_H 15#define LLVM_CLANG_AST_STMT_H 16 17#include "llvm/Support/Casting.h" 18#include "llvm/Support/raw_ostream.h" 19#include "clang/Basic/SourceLocation.h" 20#include "clang/AST/PrettyPrinter.h" 21#include "clang/AST/StmtIterator.h" 22#include "clang/AST/DeclGroup.h" 23#include "llvm/ADT/SmallVector.h" 24#include "clang/AST/ASTContext.h" 25#include <string> 26using llvm::dyn_cast_or_null; 27 28namespace llvm { 29 class FoldingSetNodeID; 30} 31 32namespace clang { 33 class ASTContext; 34 class Expr; 35 class Decl; 36 class ParmVarDecl; 37 class QualType; 38 class IdentifierInfo; 39 class SourceManager; 40 class StringLiteral; 41 class SwitchStmt; 42 43 //===----------------------------------------------------------------------===// 44 // ExprIterator - Iterators for iterating over Stmt* arrays that contain 45 // only Expr*. This is needed because AST nodes use Stmt* arrays to store 46 // references to children (to be compatible with StmtIterator). 47 //===----------------------------------------------------------------------===// 48 49 class Stmt; 50 class Expr; 51 52 class ExprIterator { 53 Stmt** I; 54 public: 55 ExprIterator(Stmt** i) : I(i) {} 56 ExprIterator() : I(0) {} 57 ExprIterator& operator++() { ++I; return *this; } 58 ExprIterator operator-(size_t i) { return I-i; } 59 ExprIterator operator+(size_t i) { return I+i; } 60 Expr* operator[](size_t idx); 61 // FIXME: Verify that this will correctly return a signed distance. 62 signed operator-(const ExprIterator& R) const { return I - R.I; } 63 Expr* operator*() const; 64 Expr* operator->() const; 65 bool operator==(const ExprIterator& R) const { return I == R.I; } 66 bool operator!=(const ExprIterator& R) const { return I != R.I; } 67 bool operator>(const ExprIterator& R) const { return I > R.I; } 68 bool operator>=(const ExprIterator& R) const { return I >= R.I; } 69 }; 70 71 class ConstExprIterator { 72 Stmt* const * I; 73 public: 74 ConstExprIterator(Stmt* const* i) : I(i) {} 75 ConstExprIterator() : I(0) {} 76 ConstExprIterator& operator++() { ++I; return *this; } 77 ConstExprIterator operator+(size_t i) { return I+i; } 78 ConstExprIterator operator-(size_t i) { return I-i; } 79 const Expr * operator[](size_t idx) const; 80 signed operator-(const ConstExprIterator& R) const { return I - R.I; } 81 const Expr * operator*() const; 82 const Expr * operator->() const; 83 bool operator==(const ConstExprIterator& R) const { return I == R.I; } 84 bool operator!=(const ConstExprIterator& R) const { return I != R.I; } 85 bool operator>(const ConstExprIterator& R) const { return I > R.I; } 86 bool operator>=(const ConstExprIterator& R) const { return I >= R.I; } 87 }; 88 89//===----------------------------------------------------------------------===// 90// AST classes for statements. 91//===----------------------------------------------------------------------===// 92 93/// Stmt - This represents one statement. 94/// 95class Stmt { 96public: 97 enum StmtClass { 98 NoStmtClass = 0, 99#define STMT(CLASS, PARENT) CLASS##Class, 100#define FIRST_STMT(CLASS) firstStmtConstant = CLASS##Class, 101#define LAST_STMT(CLASS) lastStmtConstant = CLASS##Class, 102#define FIRST_EXPR(CLASS) firstExprConstant = CLASS##Class, 103#define LAST_EXPR(CLASS) lastExprConstant = CLASS##Class 104#include "clang/AST/StmtNodes.def" 105}; 106private: 107 /// \brief The statement class. 108 const unsigned sClass : 8; 109 110 /// \brief The reference count for this statement. 111 unsigned RefCount : 24; 112 113 // Make vanilla 'new' and 'delete' illegal for Stmts. 114protected: 115 void* operator new(size_t bytes) throw() { 116 assert(0 && "Stmts cannot be allocated with regular 'new'."); 117 return 0; 118 } 119 void operator delete(void* data) throw() { 120 assert(0 && "Stmts cannot be released with regular 'delete'."); 121 } 122 123public: 124 // Only allow allocation of Stmts using the allocator in ASTContext 125 // or by doing a placement new. 126 void* operator new(size_t bytes, ASTContext& C, 127 unsigned alignment = 16) throw() { 128 return ::operator new(bytes, C, alignment); 129 } 130 131 void* operator new(size_t bytes, ASTContext* C, 132 unsigned alignment = 16) throw() { 133 return ::operator new(bytes, *C, alignment); 134 } 135 136 void* operator new(size_t bytes, void* mem) throw() { 137 return mem; 138 } 139 140 void operator delete(void*, ASTContext&, unsigned) throw() { } 141 void operator delete(void*, ASTContext*, unsigned) throw() { } 142 void operator delete(void*, std::size_t) throw() { } 143 void operator delete(void*, void*) throw() { } 144 145public: 146 /// \brief A placeholder type used to construct an empty shell of a 147 /// type, that will be filled in later (e.g., by some 148 /// de-serialization). 149 struct EmptyShell { }; 150 151protected: 152 /// DestroyChildren - Invoked by destructors of subclasses of Stmt to 153 /// recursively release child AST nodes. 154 void DestroyChildren(ASTContext& Ctx); 155 156 /// \brief Construct an empty statement. 157 explicit Stmt(StmtClass SC, EmptyShell) : sClass(SC), RefCount(1) { 158 if (Stmt::CollectingStats()) Stmt::addStmtClass(SC); 159 } 160 161 /// \brief Virtual method that performs the actual destruction of 162 /// this statement. 163 /// 164 /// Subclasses should override this method (not Destroy()) to 165 /// provide class-specific destruction. 166 virtual void DoDestroy(ASTContext &Ctx); 167 168public: 169 Stmt(StmtClass SC) : sClass(SC), RefCount(1) { 170 if (Stmt::CollectingStats()) Stmt::addStmtClass(SC); 171 } 172 virtual ~Stmt() {} 173 174 /// \brief Destroy the current statement and its children. 175 void Destroy(ASTContext &Ctx) { 176 assert(RefCount >= 1); 177 if (--RefCount == 0) 178 DoDestroy(Ctx); 179 } 180 181 /// \brief Increases the reference count for this statement. 182 /// 183 /// Invoke the Retain() operation when this statement or expression 184 /// is being shared by another owner. 185 Stmt *Retain() { 186 assert(RefCount >= 1); 187 ++RefCount; 188 return this; 189 } 190 191 StmtClass getStmtClass() const { return (StmtClass)sClass; } 192 const char *getStmtClassName() const; 193 194 /// SourceLocation tokens are not useful in isolation - they are low level 195 /// value objects created/interpreted by SourceManager. We assume AST 196 /// clients will have a pointer to the respective SourceManager. 197 virtual SourceRange getSourceRange() const = 0; 198 SourceLocation getLocStart() const { return getSourceRange().getBegin(); } 199 SourceLocation getLocEnd() const { return getSourceRange().getEnd(); } 200 201 // global temp stats (until we have a per-module visitor) 202 static void addStmtClass(const StmtClass s); 203 static bool CollectingStats(bool enable=false); 204 static void PrintStats(); 205 206 /// dump - This does a local dump of the specified AST fragment. It dumps the 207 /// specified node and a few nodes underneath it, but not the whole subtree. 208 /// This is useful in a debugger. 209 void dump() const; 210 void dump(SourceManager &SM) const; 211 212 /// dumpAll - This does a dump of the specified AST fragment and all subtrees. 213 void dumpAll() const; 214 void dumpAll(SourceManager &SM) const; 215 216 /// dumpPretty/printPretty - These two methods do a "pretty print" of the AST 217 /// back to its original source language syntax. 218 void dumpPretty(ASTContext& Context) const; 219 void printPretty(llvm::raw_ostream &OS, PrinterHelper *Helper, 220 const PrintingPolicy &Policy, 221 unsigned Indentation = 0) const { 222 printPretty(OS, *(ASTContext*)0, Helper, Policy, Indentation); 223 } 224 void printPretty(llvm::raw_ostream &OS, ASTContext &Context, 225 PrinterHelper *Helper, 226 const PrintingPolicy &Policy, 227 unsigned Indentation = 0) const; 228 229 /// viewAST - Visualize an AST rooted at this Stmt* using GraphViz. Only 230 /// works on systems with GraphViz (Mac OS X) or dot+gv installed. 231 void viewAST() const; 232 233 // Implement isa<T> support. 234 static bool classof(const Stmt *) { return true; } 235 236 /// hasImplicitControlFlow - Some statements (e.g. short circuited operations) 237 /// contain implicit control-flow in the order their subexpressions 238 /// are evaluated. This predicate returns true if this statement has 239 /// such implicit control-flow. Such statements are also specially handled 240 /// within CFGs. 241 bool hasImplicitControlFlow() const; 242 243 /// Child Iterators: All subclasses must implement child_begin and child_end 244 /// to permit easy iteration over the substatements/subexpessions of an 245 /// AST node. This permits easy iteration over all nodes in the AST. 246 typedef StmtIterator child_iterator; 247 typedef ConstStmtIterator const_child_iterator; 248 249 virtual child_iterator child_begin() = 0; 250 virtual child_iterator child_end() = 0; 251 252 const_child_iterator child_begin() const { 253 return const_child_iterator(const_cast<Stmt*>(this)->child_begin()); 254 } 255 256 const_child_iterator child_end() const { 257 return const_child_iterator(const_cast<Stmt*>(this)->child_end()); 258 } 259 260 /// \brief Produce a unique representation of the given statement. 261 /// 262 /// \brief ID once the profiling operation is complete, will contain 263 /// the unique representation of the given statement. 264 /// 265 /// \brief Context the AST context in which the statement resides 266 /// 267 /// \brief Canonical whether the profile should be based on the canonical 268 /// representation of this statement (e.g., where non-type template 269 /// parameters are identified by index/level rather than their 270 /// declaration pointers) or the exact representation of the statement as 271 /// written in the source. 272 void Profile(llvm::FoldingSetNodeID &ID, ASTContext &Context, 273 bool Canonical); 274}; 275 276/// DeclStmt - Adaptor class for mixing declarations with statements and 277/// expressions. For example, CompoundStmt mixes statements, expressions 278/// and declarations (variables, types). Another example is ForStmt, where 279/// the first statement can be an expression or a declaration. 280/// 281class DeclStmt : public Stmt { 282 DeclGroupRef DG; 283 SourceLocation StartLoc, EndLoc; 284 285public: 286 DeclStmt(DeclGroupRef dg, SourceLocation startLoc, 287 SourceLocation endLoc) : Stmt(DeclStmtClass), DG(dg), 288 StartLoc(startLoc), EndLoc(endLoc) {} 289 290 /// \brief Build an empty declaration statement. 291 explicit DeclStmt(EmptyShell Empty) : Stmt(DeclStmtClass, Empty) { } 292 293 /// isSingleDecl - This method returns true if this DeclStmt refers 294 /// to a single Decl. 295 bool isSingleDecl() const { 296 return DG.isSingleDecl(); 297 } 298 299 const Decl *getSingleDecl() const { return DG.getSingleDecl(); } 300 Decl *getSingleDecl() { return DG.getSingleDecl(); } 301 302 const DeclGroupRef getDeclGroup() const { return DG; } 303 DeclGroupRef getDeclGroup() { return DG; } 304 void setDeclGroup(DeclGroupRef DGR) { DG = DGR; } 305 306 SourceLocation getStartLoc() const { return StartLoc; } 307 void setStartLoc(SourceLocation L) { StartLoc = L; } 308 SourceLocation getEndLoc() const { return EndLoc; } 309 void setEndLoc(SourceLocation L) { EndLoc = L; } 310 311 SourceRange getSourceRange() const { 312 return SourceRange(StartLoc, EndLoc); 313 } 314 315 static bool classof(const Stmt *T) { 316 return T->getStmtClass() == DeclStmtClass; 317 } 318 static bool classof(const DeclStmt *) { return true; } 319 320 // Iterators over subexpressions. 321 virtual child_iterator child_begin(); 322 virtual child_iterator child_end(); 323 324 typedef DeclGroupRef::iterator decl_iterator; 325 typedef DeclGroupRef::const_iterator const_decl_iterator; 326 327 decl_iterator decl_begin() { return DG.begin(); } 328 decl_iterator decl_end() { return DG.end(); } 329 const_decl_iterator decl_begin() const { return DG.begin(); } 330 const_decl_iterator decl_end() const { return DG.end(); } 331}; 332 333/// NullStmt - This is the null statement ";": C99 6.8.3p3. 334/// 335class NullStmt : public Stmt { 336 SourceLocation SemiLoc; 337public: 338 NullStmt(SourceLocation L) : Stmt(NullStmtClass), SemiLoc(L) {} 339 340 /// \brief Build an empty null statement. 341 explicit NullStmt(EmptyShell Empty) : Stmt(NullStmtClass, Empty) { } 342 343 SourceLocation getSemiLoc() const { return SemiLoc; } 344 void setSemiLoc(SourceLocation L) { SemiLoc = L; } 345 346 virtual SourceRange getSourceRange() const { return SourceRange(SemiLoc); } 347 348 static bool classof(const Stmt *T) { 349 return T->getStmtClass() == NullStmtClass; 350 } 351 static bool classof(const NullStmt *) { return true; } 352 353 // Iterators 354 virtual child_iterator child_begin(); 355 virtual child_iterator child_end(); 356}; 357 358/// CompoundStmt - This represents a group of statements like { stmt stmt }. 359/// 360class CompoundStmt : public Stmt { 361 Stmt** Body; 362 unsigned NumStmts; 363 SourceLocation LBracLoc, RBracLoc; 364public: 365 CompoundStmt(ASTContext& C, Stmt **StmtStart, unsigned numStmts, 366 SourceLocation LB, SourceLocation RB) 367 : Stmt(CompoundStmtClass), NumStmts(numStmts), LBracLoc(LB), RBracLoc(RB) { 368 if (NumStmts == 0) { 369 Body = 0; 370 return; 371 } 372 373 Body = new (C) Stmt*[NumStmts]; 374 memcpy(Body, StmtStart, numStmts * sizeof(*Body)); 375 } 376 377 // \brief Build an empty compound statement. 378 explicit CompoundStmt(EmptyShell Empty) 379 : Stmt(CompoundStmtClass, Empty), Body(0), NumStmts(0) { } 380 381 void setStmts(ASTContext &C, Stmt **Stmts, unsigned NumStmts); 382 383 bool body_empty() const { return NumStmts == 0; } 384 unsigned size() const { return NumStmts; } 385 386 typedef Stmt** body_iterator; 387 body_iterator body_begin() { return Body; } 388 body_iterator body_end() { return Body + NumStmts; } 389 Stmt *body_back() { return NumStmts ? Body[NumStmts-1] : 0; } 390 391 typedef Stmt* const * const_body_iterator; 392 const_body_iterator body_begin() const { return Body; } 393 const_body_iterator body_end() const { return Body + NumStmts; } 394 const Stmt *body_back() const { return NumStmts ? Body[NumStmts-1] : 0; } 395 396 typedef std::reverse_iterator<body_iterator> reverse_body_iterator; 397 reverse_body_iterator body_rbegin() { 398 return reverse_body_iterator(body_end()); 399 } 400 reverse_body_iterator body_rend() { 401 return reverse_body_iterator(body_begin()); 402 } 403 404 typedef std::reverse_iterator<const_body_iterator> 405 const_reverse_body_iterator; 406 407 const_reverse_body_iterator body_rbegin() const { 408 return const_reverse_body_iterator(body_end()); 409 } 410 411 const_reverse_body_iterator body_rend() const { 412 return const_reverse_body_iterator(body_begin()); 413 } 414 415 virtual SourceRange getSourceRange() const { 416 return SourceRange(LBracLoc, RBracLoc); 417 } 418 419 SourceLocation getLBracLoc() const { return LBracLoc; } 420 void setLBracLoc(SourceLocation L) { LBracLoc = L; } 421 SourceLocation getRBracLoc() const { return RBracLoc; } 422 void setRBracLoc(SourceLocation L) { RBracLoc = L; } 423 424 static bool classof(const Stmt *T) { 425 return T->getStmtClass() == CompoundStmtClass; 426 } 427 static bool classof(const CompoundStmt *) { return true; } 428 429 // Iterators 430 virtual child_iterator child_begin(); 431 virtual child_iterator child_end(); 432}; 433 434// SwitchCase is the base class for CaseStmt and DefaultStmt, 435class SwitchCase : public Stmt { 436protected: 437 // A pointer to the following CaseStmt or DefaultStmt class, 438 // used by SwitchStmt. 439 SwitchCase *NextSwitchCase; 440 441 SwitchCase(StmtClass SC) : Stmt(SC), NextSwitchCase(0) {} 442 443public: 444 const SwitchCase *getNextSwitchCase() const { return NextSwitchCase; } 445 446 SwitchCase *getNextSwitchCase() { return NextSwitchCase; } 447 448 void setNextSwitchCase(SwitchCase *SC) { NextSwitchCase = SC; } 449 450 Stmt *getSubStmt() { return v_getSubStmt(); } 451 452 virtual SourceRange getSourceRange() const { return SourceRange(); } 453 454 static bool classof(const Stmt *T) { 455 return T->getStmtClass() == CaseStmtClass || 456 T->getStmtClass() == DefaultStmtClass; 457 } 458 static bool classof(const SwitchCase *) { return true; } 459protected: 460 virtual Stmt* v_getSubStmt() = 0; 461}; 462 463class CaseStmt : public SwitchCase { 464 enum { SUBSTMT, LHS, RHS, END_EXPR }; 465 Stmt* SubExprs[END_EXPR]; // The expression for the RHS is Non-null for 466 // GNU "case 1 ... 4" extension 467 SourceLocation CaseLoc; 468 SourceLocation EllipsisLoc; 469 SourceLocation ColonLoc; 470 471 virtual Stmt* v_getSubStmt() { return getSubStmt(); } 472public: 473 CaseStmt(Expr *lhs, Expr *rhs, SourceLocation caseLoc, 474 SourceLocation ellipsisLoc, SourceLocation colonLoc) 475 : SwitchCase(CaseStmtClass) { 476 SubExprs[SUBSTMT] = 0; 477 SubExprs[LHS] = reinterpret_cast<Stmt*>(lhs); 478 SubExprs[RHS] = reinterpret_cast<Stmt*>(rhs); 479 CaseLoc = caseLoc; 480 EllipsisLoc = ellipsisLoc; 481 ColonLoc = colonLoc; 482 } 483 484 /// \brief Build an empty switch case statement. 485 explicit CaseStmt(EmptyShell Empty) : SwitchCase(CaseStmtClass) { } 486 487 SourceLocation getCaseLoc() const { return CaseLoc; } 488 void setCaseLoc(SourceLocation L) { CaseLoc = L; } 489 SourceLocation getEllipsisLoc() const { return EllipsisLoc; } 490 void setEllipsisLoc(SourceLocation L) { EllipsisLoc = L; } 491 SourceLocation getColonLoc() const { return ColonLoc; } 492 void setColonLoc(SourceLocation L) { ColonLoc = L; } 493 494 Expr *getLHS() { return reinterpret_cast<Expr*>(SubExprs[LHS]); } 495 Expr *getRHS() { return reinterpret_cast<Expr*>(SubExprs[RHS]); } 496 Stmt *getSubStmt() { return SubExprs[SUBSTMT]; } 497 498 const Expr *getLHS() const { 499 return reinterpret_cast<const Expr*>(SubExprs[LHS]); 500 } 501 const Expr *getRHS() const { 502 return reinterpret_cast<const Expr*>(SubExprs[RHS]); 503 } 504 const Stmt *getSubStmt() const { return SubExprs[SUBSTMT]; } 505 506 void setSubStmt(Stmt *S) { SubExprs[SUBSTMT] = S; } 507 void setLHS(Expr *Val) { SubExprs[LHS] = reinterpret_cast<Stmt*>(Val); } 508 void setRHS(Expr *Val) { SubExprs[RHS] = reinterpret_cast<Stmt*>(Val); } 509 510 511 virtual SourceRange getSourceRange() const { 512 // Handle deeply nested case statements with iteration instead of recursion. 513 const CaseStmt *CS = this; 514 while (const CaseStmt *CS2 = dyn_cast<CaseStmt>(CS->getSubStmt())) 515 CS = CS2; 516 517 return SourceRange(CaseLoc, CS->getSubStmt()->getLocEnd()); 518 } 519 static bool classof(const Stmt *T) { 520 return T->getStmtClass() == CaseStmtClass; 521 } 522 static bool classof(const CaseStmt *) { return true; } 523 524 // Iterators 525 virtual child_iterator child_begin(); 526 virtual child_iterator child_end(); 527}; 528 529class DefaultStmt : public SwitchCase { 530 Stmt* SubStmt; 531 SourceLocation DefaultLoc; 532 SourceLocation ColonLoc; 533 virtual Stmt* v_getSubStmt() { return getSubStmt(); } 534public: 535 DefaultStmt(SourceLocation DL, SourceLocation CL, Stmt *substmt) : 536 SwitchCase(DefaultStmtClass), SubStmt(substmt), DefaultLoc(DL), 537 ColonLoc(CL) {} 538 539 /// \brief Build an empty default statement. 540 explicit DefaultStmt(EmptyShell) : SwitchCase(DefaultStmtClass) { } 541 542 Stmt *getSubStmt() { return SubStmt; } 543 const Stmt *getSubStmt() const { return SubStmt; } 544 void setSubStmt(Stmt *S) { SubStmt = S; } 545 546 SourceLocation getDefaultLoc() const { return DefaultLoc; } 547 void setDefaultLoc(SourceLocation L) { DefaultLoc = L; } 548 SourceLocation getColonLoc() const { return ColonLoc; } 549 void setColonLoc(SourceLocation L) { ColonLoc = L; } 550 551 virtual SourceRange getSourceRange() const { 552 return SourceRange(DefaultLoc, SubStmt->getLocEnd()); 553 } 554 static bool classof(const Stmt *T) { 555 return T->getStmtClass() == DefaultStmtClass; 556 } 557 static bool classof(const DefaultStmt *) { return true; } 558 559 // Iterators 560 virtual child_iterator child_begin(); 561 virtual child_iterator child_end(); 562}; 563 564class LabelStmt : public Stmt { 565 IdentifierInfo *Label; 566 Stmt *SubStmt; 567 SourceLocation IdentLoc; 568public: 569 LabelStmt(SourceLocation IL, IdentifierInfo *label, Stmt *substmt) 570 : Stmt(LabelStmtClass), Label(label), 571 SubStmt(substmt), IdentLoc(IL) {} 572 573 // \brief Build an empty label statement. 574 explicit LabelStmt(EmptyShell Empty) : Stmt(LabelStmtClass, Empty) { } 575 576 SourceLocation getIdentLoc() const { return IdentLoc; } 577 IdentifierInfo *getID() const { return Label; } 578 void setID(IdentifierInfo *II) { Label = II; } 579 const char *getName() const; 580 Stmt *getSubStmt() { return SubStmt; } 581 const Stmt *getSubStmt() const { return SubStmt; } 582 void setIdentLoc(SourceLocation L) { IdentLoc = L; } 583 void setSubStmt(Stmt *SS) { SubStmt = SS; } 584 585 virtual SourceRange getSourceRange() const { 586 return SourceRange(IdentLoc, SubStmt->getLocEnd()); 587 } 588 static bool classof(const Stmt *T) { 589 return T->getStmtClass() == LabelStmtClass; 590 } 591 static bool classof(const LabelStmt *) { return true; } 592 593 // Iterators 594 virtual child_iterator child_begin(); 595 virtual child_iterator child_end(); 596}; 597 598 599/// IfStmt - This represents an if/then/else. 600/// 601class IfStmt : public Stmt { 602 enum { COND, THEN, ELSE, END_EXPR }; 603 Stmt* SubExprs[END_EXPR]; 604 SourceLocation IfLoc; 605 SourceLocation ElseLoc; 606public: 607 IfStmt(SourceLocation IL, Expr *cond, Stmt *then, 608 SourceLocation EL = SourceLocation(), Stmt *elsev = 0) 609 : Stmt(IfStmtClass) { 610 SubExprs[COND] = reinterpret_cast<Stmt*>(cond); 611 SubExprs[THEN] = then; 612 SubExprs[ELSE] = elsev; 613 IfLoc = IL; 614 ElseLoc = EL; 615 } 616 617 /// \brief Build an empty if/then/else statement 618 explicit IfStmt(EmptyShell Empty) : Stmt(IfStmtClass, Empty) { } 619 620 const Expr *getCond() const { return reinterpret_cast<Expr*>(SubExprs[COND]);} 621 void setCond(Expr *E) { SubExprs[COND] = reinterpret_cast<Stmt *>(E); } 622 const Stmt *getThen() const { return SubExprs[THEN]; } 623 void setThen(Stmt *S) { SubExprs[THEN] = S; } 624 const Stmt *getElse() const { return SubExprs[ELSE]; } 625 void setElse(Stmt *S) { SubExprs[ELSE] = S; } 626 627 Expr *getCond() { return reinterpret_cast<Expr*>(SubExprs[COND]); } 628 Stmt *getThen() { return SubExprs[THEN]; } 629 Stmt *getElse() { return SubExprs[ELSE]; } 630 631 SourceLocation getIfLoc() const { return IfLoc; } 632 void setIfLoc(SourceLocation L) { IfLoc = L; } 633 SourceLocation getElseLoc() const { return ElseLoc; } 634 void setElseLoc(SourceLocation L) { ElseLoc = L; } 635 636 virtual SourceRange getSourceRange() const { 637 if (SubExprs[ELSE]) 638 return SourceRange(IfLoc, SubExprs[ELSE]->getLocEnd()); 639 else 640 return SourceRange(IfLoc, SubExprs[THEN]->getLocEnd()); 641 } 642 643 static bool classof(const Stmt *T) { 644 return T->getStmtClass() == IfStmtClass; 645 } 646 static bool classof(const IfStmt *) { return true; } 647 648 // Iterators 649 virtual child_iterator child_begin(); 650 virtual child_iterator child_end(); 651}; 652 653/// SwitchStmt - This represents a 'switch' stmt. 654/// 655class SwitchStmt : public Stmt { 656 enum { COND, BODY, END_EXPR }; 657 Stmt* SubExprs[END_EXPR]; 658 // This points to a linked list of case and default statements. 659 SwitchCase *FirstCase; 660 SourceLocation SwitchLoc; 661 662protected: 663 virtual void DoDestroy(ASTContext &Ctx); 664 665public: 666 SwitchStmt(Expr *cond) : Stmt(SwitchStmtClass), FirstCase(0) { 667 SubExprs[COND] = reinterpret_cast<Stmt*>(cond); 668 SubExprs[BODY] = NULL; 669 } 670 671 /// \brief Build a empty switch statement. 672 explicit SwitchStmt(EmptyShell Empty) : Stmt(SwitchStmtClass, Empty) { } 673 674 const Expr *getCond() const { return reinterpret_cast<Expr*>(SubExprs[COND]);} 675 const Stmt *getBody() const { return SubExprs[BODY]; } 676 const SwitchCase *getSwitchCaseList() const { return FirstCase; } 677 678 Expr *getCond() { return reinterpret_cast<Expr*>(SubExprs[COND]);} 679 void setCond(Expr *E) { SubExprs[COND] = reinterpret_cast<Stmt *>(E); } 680 Stmt *getBody() { return SubExprs[BODY]; } 681 void setBody(Stmt *S) { SubExprs[BODY] = S; } 682 SwitchCase *getSwitchCaseList() { return FirstCase; } 683 684 /// \brief Set the case list for this switch statement. 685 /// 686 /// The caller is responsible for incrementing the retain counts on 687 /// all of the SwitchCase statements in this list. 688 void setSwitchCaseList(SwitchCase *SC) { FirstCase = SC; } 689 690 SourceLocation getSwitchLoc() const { return SwitchLoc; } 691 void setSwitchLoc(SourceLocation L) { SwitchLoc = L; } 692 693 void setBody(Stmt *S, SourceLocation SL) { 694 SubExprs[BODY] = S; 695 SwitchLoc = SL; 696 } 697 void addSwitchCase(SwitchCase *SC) { 698 assert(!SC->getNextSwitchCase() && "case/default already added to a switch"); 699 SC->Retain(); 700 SC->setNextSwitchCase(FirstCase); 701 FirstCase = SC; 702 } 703 virtual SourceRange getSourceRange() const { 704 return SourceRange(SwitchLoc, SubExprs[BODY]->getLocEnd()); 705 } 706 static bool classof(const Stmt *T) { 707 return T->getStmtClass() == SwitchStmtClass; 708 } 709 static bool classof(const SwitchStmt *) { return true; } 710 711 // Iterators 712 virtual child_iterator child_begin(); 713 virtual child_iterator child_end(); 714}; 715 716 717/// WhileStmt - This represents a 'while' stmt. 718/// 719class WhileStmt : public Stmt { 720 enum { COND, BODY, END_EXPR }; 721 Stmt* SubExprs[END_EXPR]; 722 SourceLocation WhileLoc; 723public: 724 WhileStmt(Expr *cond, Stmt *body, SourceLocation WL) : Stmt(WhileStmtClass) { 725 SubExprs[COND] = reinterpret_cast<Stmt*>(cond); 726 SubExprs[BODY] = body; 727 WhileLoc = WL; 728 } 729 730 /// \brief Build an empty while statement. 731 explicit WhileStmt(EmptyShell Empty) : Stmt(WhileStmtClass, Empty) { } 732 733 Expr *getCond() { return reinterpret_cast<Expr*>(SubExprs[COND]); } 734 const Expr *getCond() const { return reinterpret_cast<Expr*>(SubExprs[COND]);} 735 void setCond(Expr *E) { SubExprs[COND] = reinterpret_cast<Stmt*>(E); } 736 Stmt *getBody() { return SubExprs[BODY]; } 737 const Stmt *getBody() const { return SubExprs[BODY]; } 738 void setBody(Stmt *S) { SubExprs[BODY] = S; } 739 740 SourceLocation getWhileLoc() const { return WhileLoc; } 741 void setWhileLoc(SourceLocation L) { WhileLoc = L; } 742 743 virtual SourceRange getSourceRange() const { 744 return SourceRange(WhileLoc, SubExprs[BODY]->getLocEnd()); 745 } 746 static bool classof(const Stmt *T) { 747 return T->getStmtClass() == WhileStmtClass; 748 } 749 static bool classof(const WhileStmt *) { return true; } 750 751 // Iterators 752 virtual child_iterator child_begin(); 753 virtual child_iterator child_end(); 754}; 755 756/// DoStmt - This represents a 'do/while' stmt. 757/// 758class DoStmt : public Stmt { 759 enum { COND, BODY, END_EXPR }; 760 Stmt* SubExprs[END_EXPR]; 761 SourceLocation DoLoc; 762 SourceLocation WhileLoc; 763 SourceLocation RParenLoc; // Location of final ')' in do stmt condition. 764 765public: 766 DoStmt(Stmt *body, Expr *cond, SourceLocation DL, SourceLocation WL, 767 SourceLocation RP) 768 : Stmt(DoStmtClass), DoLoc(DL), WhileLoc(WL), RParenLoc(RP) { 769 SubExprs[COND] = reinterpret_cast<Stmt*>(cond); 770 SubExprs[BODY] = body; 771 } 772 773 /// \brief Build an empty do-while statement. 774 explicit DoStmt(EmptyShell Empty) : Stmt(DoStmtClass, Empty) { } 775 776 Expr *getCond() { return reinterpret_cast<Expr*>(SubExprs[COND]); } 777 const Expr *getCond() const { return reinterpret_cast<Expr*>(SubExprs[COND]);} 778 void setCond(Expr *E) { SubExprs[COND] = reinterpret_cast<Stmt*>(E); } 779 Stmt *getBody() { return SubExprs[BODY]; } 780 const Stmt *getBody() const { return SubExprs[BODY]; } 781 void setBody(Stmt *S) { SubExprs[BODY] = S; } 782 783 SourceLocation getDoLoc() const { return DoLoc; } 784 void setDoLoc(SourceLocation L) { DoLoc = L; } 785 SourceLocation getWhileLoc() const { return WhileLoc; } 786 void setWhileLoc(SourceLocation L) { WhileLoc = L; } 787 788 SourceLocation getRParenLoc() const { return RParenLoc; } 789 void setRParenLoc(SourceLocation L) { RParenLoc = L; } 790 791 virtual SourceRange getSourceRange() const { 792 return SourceRange(DoLoc, RParenLoc); 793 } 794 static bool classof(const Stmt *T) { 795 return T->getStmtClass() == DoStmtClass; 796 } 797 static bool classof(const DoStmt *) { return true; } 798 799 // Iterators 800 virtual child_iterator child_begin(); 801 virtual child_iterator child_end(); 802}; 803 804 805/// ForStmt - This represents a 'for (init;cond;inc)' stmt. Note that any of 806/// the init/cond/inc parts of the ForStmt will be null if they were not 807/// specified in the source. 808/// 809class ForStmt : public Stmt { 810 enum { INIT, COND, INC, BODY, END_EXPR }; 811 Stmt* SubExprs[END_EXPR]; // SubExprs[INIT] is an expression or declstmt. 812 SourceLocation ForLoc; 813 SourceLocation LParenLoc, RParenLoc; 814 815public: 816 ForStmt(Stmt *Init, Expr *Cond, Expr *Inc, Stmt *Body, SourceLocation FL, 817 SourceLocation LP, SourceLocation RP) 818 : Stmt(ForStmtClass) { 819 SubExprs[INIT] = Init; 820 SubExprs[COND] = reinterpret_cast<Stmt*>(Cond); 821 SubExprs[INC] = reinterpret_cast<Stmt*>(Inc); 822 SubExprs[BODY] = Body; 823 ForLoc = FL; 824 LParenLoc = LP; 825 RParenLoc = RP; 826 } 827 828 /// \brief Build an empty for statement. 829 explicit ForStmt(EmptyShell Empty) : Stmt(ForStmtClass, Empty) { } 830 831 Stmt *getInit() { return SubExprs[INIT]; } 832 Expr *getCond() { return reinterpret_cast<Expr*>(SubExprs[COND]); } 833 Expr *getInc() { return reinterpret_cast<Expr*>(SubExprs[INC]); } 834 Stmt *getBody() { return SubExprs[BODY]; } 835 836 const Stmt *getInit() const { return SubExprs[INIT]; } 837 const Expr *getCond() const { return reinterpret_cast<Expr*>(SubExprs[COND]);} 838 const Expr *getInc() const { return reinterpret_cast<Expr*>(SubExprs[INC]); } 839 const Stmt *getBody() const { return SubExprs[BODY]; } 840 841 void setInit(Stmt *S) { SubExprs[INIT] = S; } 842 void setCond(Expr *E) { SubExprs[COND] = reinterpret_cast<Stmt*>(E); } 843 void setInc(Expr *E) { SubExprs[INC] = reinterpret_cast<Stmt*>(E); } 844 void setBody(Stmt *S) { SubExprs[BODY] = S; } 845 846 SourceLocation getForLoc() const { return ForLoc; } 847 void setForLoc(SourceLocation L) { ForLoc = L; } 848 SourceLocation getLParenLoc() const { return LParenLoc; } 849 void setLParenLoc(SourceLocation L) { LParenLoc = L; } 850 SourceLocation getRParenLoc() const { return RParenLoc; } 851 void setRParenLoc(SourceLocation L) { RParenLoc = L; } 852 853 virtual SourceRange getSourceRange() const { 854 return SourceRange(ForLoc, SubExprs[BODY]->getLocEnd()); 855 } 856 static bool classof(const Stmt *T) { 857 return T->getStmtClass() == ForStmtClass; 858 } 859 static bool classof(const ForStmt *) { return true; } 860 861 // Iterators 862 virtual child_iterator child_begin(); 863 virtual child_iterator child_end(); 864}; 865 866/// GotoStmt - This represents a direct goto. 867/// 868class GotoStmt : public Stmt { 869 LabelStmt *Label; 870 SourceLocation GotoLoc; 871 SourceLocation LabelLoc; 872public: 873 GotoStmt(LabelStmt *label, SourceLocation GL, SourceLocation LL) 874 : Stmt(GotoStmtClass), Label(label), GotoLoc(GL), LabelLoc(LL) {} 875 876 /// \brief Build an empty goto statement. 877 explicit GotoStmt(EmptyShell Empty) : Stmt(GotoStmtClass, Empty) { } 878 879 LabelStmt *getLabel() const { return Label; } 880 void setLabel(LabelStmt *S) { Label = S; } 881 882 SourceLocation getGotoLoc() const { return GotoLoc; } 883 void setGotoLoc(SourceLocation L) { GotoLoc = L; } 884 SourceLocation getLabelLoc() const { return LabelLoc; } 885 void setLabelLoc(SourceLocation L) { LabelLoc = L; } 886 887 virtual SourceRange getSourceRange() const { 888 return SourceRange(GotoLoc, LabelLoc); 889 } 890 static bool classof(const Stmt *T) { 891 return T->getStmtClass() == GotoStmtClass; 892 } 893 static bool classof(const GotoStmt *) { return true; } 894 895 // Iterators 896 virtual child_iterator child_begin(); 897 virtual child_iterator child_end(); 898}; 899 900/// IndirectGotoStmt - This represents an indirect goto. 901/// 902class IndirectGotoStmt : public Stmt { 903 SourceLocation GotoLoc; 904 SourceLocation StarLoc; 905 Stmt *Target; 906public: 907 IndirectGotoStmt(SourceLocation gotoLoc, SourceLocation starLoc, 908 Expr *target) 909 : Stmt(IndirectGotoStmtClass), GotoLoc(gotoLoc), StarLoc(starLoc), 910 Target((Stmt*)target) {} 911 912 /// \brief Build an empty indirect goto statement. 913 explicit IndirectGotoStmt(EmptyShell Empty) 914 : Stmt(IndirectGotoStmtClass, Empty) { } 915 916 void setGotoLoc(SourceLocation L) { GotoLoc = L; } 917 SourceLocation getGotoLoc() const { return GotoLoc; } 918 void setStarLoc(SourceLocation L) { StarLoc = L; } 919 SourceLocation getStarLoc() const { return StarLoc; } 920 921 Expr *getTarget(); 922 const Expr *getTarget() const; 923 void setTarget(Expr *E) { Target = reinterpret_cast<Stmt*>(E); } 924 925 virtual SourceRange getSourceRange() const { 926 return SourceRange(GotoLoc, Target->getLocEnd()); 927 } 928 929 static bool classof(const Stmt *T) { 930 return T->getStmtClass() == IndirectGotoStmtClass; 931 } 932 static bool classof(const IndirectGotoStmt *) { return true; } 933 934 // Iterators 935 virtual child_iterator child_begin(); 936 virtual child_iterator child_end(); 937}; 938 939 940/// ContinueStmt - This represents a continue. 941/// 942class ContinueStmt : public Stmt { 943 SourceLocation ContinueLoc; 944public: 945 ContinueStmt(SourceLocation CL) : Stmt(ContinueStmtClass), ContinueLoc(CL) {} 946 947 /// \brief Build an empty continue statement. 948 explicit ContinueStmt(EmptyShell Empty) : Stmt(ContinueStmtClass, Empty) { } 949 950 SourceLocation getContinueLoc() const { return ContinueLoc; } 951 void setContinueLoc(SourceLocation L) { ContinueLoc = L; } 952 953 virtual SourceRange getSourceRange() const { 954 return SourceRange(ContinueLoc); 955 } 956 957 static bool classof(const Stmt *T) { 958 return T->getStmtClass() == ContinueStmtClass; 959 } 960 static bool classof(const ContinueStmt *) { return true; } 961 962 // Iterators 963 virtual child_iterator child_begin(); 964 virtual child_iterator child_end(); 965}; 966 967/// BreakStmt - This represents a break. 968/// 969class BreakStmt : public Stmt { 970 SourceLocation BreakLoc; 971public: 972 BreakStmt(SourceLocation BL) : Stmt(BreakStmtClass), BreakLoc(BL) {} 973 974 /// \brief Build an empty break statement. 975 explicit BreakStmt(EmptyShell Empty) : Stmt(BreakStmtClass, Empty) { } 976 977 SourceLocation getBreakLoc() const { return BreakLoc; } 978 void setBreakLoc(SourceLocation L) { BreakLoc = L; } 979 980 virtual SourceRange getSourceRange() const { return SourceRange(BreakLoc); } 981 982 static bool classof(const Stmt *T) { 983 return T->getStmtClass() == BreakStmtClass; 984 } 985 static bool classof(const BreakStmt *) { return true; } 986 987 // Iterators 988 virtual child_iterator child_begin(); 989 virtual child_iterator child_end(); 990}; 991 992 993/// ReturnStmt - This represents a return, optionally of an expression: 994/// return; 995/// return 4; 996/// 997/// Note that GCC allows return with no argument in a function declared to 998/// return a value, and it allows returning a value in functions declared to 999/// return void. We explicitly model this in the AST, which means you can't 1000/// depend on the return type of the function and the presence of an argument. 1001/// 1002class ReturnStmt : public Stmt { 1003 Stmt *RetExpr; 1004 SourceLocation RetLoc; 1005public: 1006 ReturnStmt(SourceLocation RL, Expr *E = 0) : Stmt(ReturnStmtClass), 1007 RetExpr((Stmt*) E), RetLoc(RL) {} 1008 1009 /// \brief Build an empty return expression. 1010 explicit ReturnStmt(EmptyShell Empty) : Stmt(ReturnStmtClass, Empty) { } 1011 1012 const Expr *getRetValue() const; 1013 Expr *getRetValue(); 1014 void setRetValue(Expr *E) { RetExpr = reinterpret_cast<Stmt*>(E); } 1015 1016 SourceLocation getReturnLoc() const { return RetLoc; } 1017 void setReturnLoc(SourceLocation L) { RetLoc = L; } 1018 1019 virtual SourceRange getSourceRange() const; 1020 1021 static bool classof(const Stmt *T) { 1022 return T->getStmtClass() == ReturnStmtClass; 1023 } 1024 static bool classof(const ReturnStmt *) { return true; } 1025 1026 // Iterators 1027 virtual child_iterator child_begin(); 1028 virtual child_iterator child_end(); 1029}; 1030 1031/// AsmStmt - This represents a GNU inline-assembly statement extension. 1032/// 1033class AsmStmt : public Stmt { 1034 SourceLocation AsmLoc, RParenLoc; 1035 StringLiteral *AsmStr; 1036 1037 bool IsSimple; 1038 bool IsVolatile; 1039 1040 unsigned NumOutputs; 1041 unsigned NumInputs; 1042 1043 llvm::SmallVector<std::string, 4> Names; 1044 llvm::SmallVector<StringLiteral*, 4> Constraints; 1045 llvm::SmallVector<Stmt*, 4> Exprs; 1046 1047 llvm::SmallVector<StringLiteral*, 4> Clobbers; 1048public: 1049 AsmStmt(SourceLocation asmloc, bool issimple, bool isvolatile, 1050 unsigned numoutputs, unsigned numinputs, 1051 std::string *names, StringLiteral **constraints, 1052 Expr **exprs, StringLiteral *asmstr, unsigned numclobbers, 1053 StringLiteral **clobbers, SourceLocation rparenloc); 1054 1055 /// \brief Build an empty inline-assembly statement. 1056 explicit AsmStmt(EmptyShell Empty) : Stmt(AsmStmtClass, Empty) { } 1057 1058 SourceLocation getAsmLoc() const { return AsmLoc; } 1059 void setAsmLoc(SourceLocation L) { AsmLoc = L; } 1060 SourceLocation getRParenLoc() const { return RParenLoc; } 1061 void setRParenLoc(SourceLocation L) { RParenLoc = L; } 1062 1063 bool isVolatile() const { return IsVolatile; } 1064 void setVolatile(bool V) { IsVolatile = V; } 1065 bool isSimple() const { return IsSimple; } 1066 void setSimple(bool V) { IsSimple = false; } 1067 1068 //===--- Asm String Analysis ---===// 1069 1070 const StringLiteral *getAsmString() const { return AsmStr; } 1071 StringLiteral *getAsmString() { return AsmStr; } 1072 void setAsmString(StringLiteral *E) { AsmStr = E; } 1073 1074 /// AsmStringPiece - this is part of a decomposed asm string specification 1075 /// (for use with the AnalyzeAsmString function below). An asm string is 1076 /// considered to be a concatenation of these parts. 1077 class AsmStringPiece { 1078 public: 1079 enum Kind { 1080 String, // String in .ll asm string form, "$" -> "$$" and "%%" -> "%". 1081 Operand // Operand reference, with optional modifier %c4. 1082 }; 1083 private: 1084 Kind MyKind; 1085 std::string Str; 1086 unsigned OperandNo; 1087 public: 1088 AsmStringPiece(const std::string &S) : MyKind(String), Str(S) {} 1089 AsmStringPiece(unsigned OpNo, char Modifier) 1090 : MyKind(Operand), Str(), OperandNo(OpNo) { 1091 Str += Modifier; 1092 } 1093 1094 bool isString() const { return MyKind == String; } 1095 bool isOperand() const { return MyKind == Operand; } 1096 1097 const std::string &getString() const { 1098 assert(isString()); 1099 return Str; 1100 } 1101 1102 unsigned getOperandNo() const { 1103 assert(isOperand()); 1104 return OperandNo; 1105 } 1106 1107 /// getModifier - Get the modifier for this operand, if present. This 1108 /// returns '\0' if there was no modifier. 1109 char getModifier() const { 1110 assert(isOperand()); 1111 return Str[0]; 1112 } 1113 }; 1114 1115 /// AnalyzeAsmString - Analyze the asm string of the current asm, decomposing 1116 /// it into pieces. If the asm string is erroneous, emit errors and return 1117 /// true, otherwise return false. This handles canonicalization and 1118 /// translation of strings from GCC syntax to LLVM IR syntax, and handles 1119 //// flattening of named references like %[foo] to Operand AsmStringPiece's. 1120 unsigned AnalyzeAsmString(llvm::SmallVectorImpl<AsmStringPiece> &Pieces, 1121 ASTContext &C, unsigned &DiagOffs) const; 1122 1123 1124 //===--- Output operands ---===// 1125 1126 unsigned getNumOutputs() const { return NumOutputs; } 1127 1128 const std::string &getOutputName(unsigned i) const { 1129 return Names[i]; 1130 } 1131 1132 /// getOutputConstraint - Return the constraint string for the specified 1133 /// output operand. All output constraints are known to be non-empty (either 1134 /// '=' or '+'). 1135 std::string getOutputConstraint(unsigned i) const; 1136 1137 const StringLiteral *getOutputConstraintLiteral(unsigned i) const { 1138 return Constraints[i]; 1139 } 1140 StringLiteral *getOutputConstraintLiteral(unsigned i) { 1141 return Constraints[i]; 1142 } 1143 1144 1145 Expr *getOutputExpr(unsigned i); 1146 1147 const Expr *getOutputExpr(unsigned i) const { 1148 return const_cast<AsmStmt*>(this)->getOutputExpr(i); 1149 } 1150 1151 /// isOutputPlusConstraint - Return true if the specified output constraint 1152 /// is a "+" constraint (which is both an input and an output) or false if it 1153 /// is an "=" constraint (just an output). 1154 bool isOutputPlusConstraint(unsigned i) const { 1155 return getOutputConstraint(i)[0] == '+'; 1156 } 1157 1158 /// getNumPlusOperands - Return the number of output operands that have a "+" 1159 /// constraint. 1160 unsigned getNumPlusOperands() const; 1161 1162 //===--- Input operands ---===// 1163 1164 unsigned getNumInputs() const { return NumInputs; } 1165 1166 const std::string &getInputName(unsigned i) const { 1167 return Names[i + NumOutputs]; 1168 } 1169 1170 /// getInputConstraint - Return the specified input constraint. Unlike output 1171 /// constraints, these can be empty. 1172 std::string getInputConstraint(unsigned i) const; 1173 1174 const StringLiteral *getInputConstraintLiteral(unsigned i) const { 1175 return Constraints[i + NumOutputs]; 1176 } 1177 StringLiteral *getInputConstraintLiteral(unsigned i) { 1178 return Constraints[i + NumOutputs]; 1179 } 1180 1181 1182 Expr *getInputExpr(unsigned i); 1183 1184 const Expr *getInputExpr(unsigned i) const { 1185 return const_cast<AsmStmt*>(this)->getInputExpr(i); 1186 } 1187 1188 void setOutputsAndInputs(unsigned NumOutputs, 1189 unsigned NumInputs, 1190 const std::string *Names, 1191 StringLiteral **Constraints, 1192 Stmt **Exprs); 1193 1194 //===--- Other ---===// 1195 1196 /// getNamedOperand - Given a symbolic operand reference like %[foo], 1197 /// translate this into a numeric value needed to reference the same operand. 1198 /// This returns -1 if the operand name is invalid. 1199 int getNamedOperand(const std::string &SymbolicName) const; 1200 1201 1202 1203 unsigned getNumClobbers() const { return Clobbers.size(); } 1204 StringLiteral *getClobber(unsigned i) { return Clobbers[i]; } 1205 const StringLiteral *getClobber(unsigned i) const { return Clobbers[i]; } 1206 void setClobbers(StringLiteral **Clobbers, unsigned NumClobbers); 1207 1208 virtual SourceRange getSourceRange() const { 1209 return SourceRange(AsmLoc, RParenLoc); 1210 } 1211 1212 static bool classof(const Stmt *T) {return T->getStmtClass() == AsmStmtClass;} 1213 static bool classof(const AsmStmt *) { return true; } 1214 1215 // Input expr iterators. 1216 1217 typedef ExprIterator inputs_iterator; 1218 typedef ConstExprIterator const_inputs_iterator; 1219 1220 inputs_iterator begin_inputs() { 1221 return Exprs.data() + NumOutputs; 1222 } 1223 1224 inputs_iterator end_inputs() { 1225 return Exprs.data() + NumOutputs + NumInputs; 1226 } 1227 1228 const_inputs_iterator begin_inputs() const { 1229 return Exprs.data() + NumOutputs; 1230 } 1231 1232 const_inputs_iterator end_inputs() const { 1233 return Exprs.data() + NumOutputs + NumInputs; 1234 } 1235 1236 // Output expr iterators. 1237 1238 typedef ExprIterator outputs_iterator; 1239 typedef ConstExprIterator const_outputs_iterator; 1240 1241 outputs_iterator begin_outputs() { 1242 return Exprs.data(); 1243 } 1244 outputs_iterator end_outputs() { 1245 return Exprs.data() + NumOutputs; 1246 } 1247 1248 const_outputs_iterator begin_outputs() const { 1249 return Exprs.data(); 1250 } 1251 const_outputs_iterator end_outputs() const { 1252 return Exprs.data() + NumOutputs; 1253 } 1254 1255 // Input name iterator. 1256 1257 const std::string *begin_output_names() const { 1258 return &Names[0]; 1259 } 1260 1261 const std::string *end_output_names() const { 1262 return &Names[0] + NumOutputs; 1263 } 1264 1265 // Child iterators 1266 1267 virtual child_iterator child_begin(); 1268 virtual child_iterator child_end(); 1269}; 1270 1271} // end namespace clang 1272 1273#endif 1274