1 //===--- Stmt.cpp - Statement AST Node Implementation ---------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file implements the Stmt class and statement subclasses.
12 //===----------------------------------------------------------------------===//
14 #include "clang/AST/Stmt.h"
15 #include "clang/AST/ExprCXX.h"
16 #include "clang/AST/ExprObjC.h"
17 #include "clang/AST/StmtCXX.h"
18 #include "clang/AST/StmtObjC.h"
19 #include "clang/AST/Type.h"
20 #include "clang/AST/ASTContext.h"
21 #include "clang/AST/ASTDiagnostic.h"
22 #include "clang/Basic/TargetInfo.h"
23 #include "llvm/Support/raw_ostream.h"
24 using namespace clang;
26 static struct StmtClassNameTable {
30 } StmtClassInfo[Stmt::lastStmtConstant+1];
32 static StmtClassNameTable &getStmtInfoTableEntry(Stmt::StmtClass E) {
33 static bool Initialized = false;
35 return StmtClassInfo[E];
37 // Intialize the table on the first use.
39 #define ABSTRACT_STMT(STMT)
40 #define STMT(CLASS, PARENT) \
41 StmtClassInfo[(unsigned)Stmt::CLASS##Class].Name = #CLASS; \
42 StmtClassInfo[(unsigned)Stmt::CLASS##Class].Size = sizeof(CLASS);
43 #include "clang/AST/StmtNodes.inc"
45 return StmtClassInfo[E];
48 const char *Stmt::getStmtClassName() const {
49 return getStmtInfoTableEntry((StmtClass) StmtBits.sClass).Name;
52 void Stmt::PrintStats() {
53 // Ensure the table is primed.
54 getStmtInfoTableEntry(Stmt::NullStmtClass);
57 llvm::errs() << "\n*** Stmt/Expr Stats:\n";
58 for (int i = 0; i != Stmt::lastStmtConstant+1; i++) {
59 if (StmtClassInfo[i].Name == 0) continue;
60 sum += StmtClassInfo[i].Counter;
62 llvm::errs() << " " << sum << " stmts/exprs total.\n";
64 for (int i = 0; i != Stmt::lastStmtConstant+1; i++) {
65 if (StmtClassInfo[i].Name == 0) continue;
66 if (StmtClassInfo[i].Counter == 0) continue;
67 llvm::errs() << " " << StmtClassInfo[i].Counter << " "
68 << StmtClassInfo[i].Name << ", " << StmtClassInfo[i].Size
69 << " each (" << StmtClassInfo[i].Counter*StmtClassInfo[i].Size
71 sum += StmtClassInfo[i].Counter*StmtClassInfo[i].Size;
74 llvm::errs() << "Total bytes = " << sum << "\n";
77 void Stmt::addStmtClass(StmtClass s) {
78 ++getStmtInfoTableEntry(s).Counter;
81 bool Stmt::StatisticsEnabled = false;
82 void Stmt::EnableStatistics() {
83 StatisticsEnabled = true;
86 Stmt *Stmt::IgnoreImplicit() {
89 if (ExprWithCleanups *ewc = dyn_cast<ExprWithCleanups>(s))
90 s = ewc->getSubExpr();
92 while (ImplicitCastExpr *ice = dyn_cast<ImplicitCastExpr>(s))
93 s = ice->getSubExpr();
98 /// \brief Strip off all label-like statements.
100 /// This will strip off label statements, case statements, attributed
101 /// statements and default statements recursively.
102 const Stmt *Stmt::stripLabelLikeStatements() const {
103 const Stmt *S = this;
105 if (const LabelStmt *LS = dyn_cast<LabelStmt>(S))
106 S = LS->getSubStmt();
107 else if (const SwitchCase *SC = dyn_cast<SwitchCase>(S))
108 S = SC->getSubStmt();
109 else if (const AttributedStmt *AS = dyn_cast<AttributedStmt>(S))
110 S = AS->getSubStmt();
120 // These silly little functions have to be static inline to suppress
121 // unused warnings, and they have to be defined to suppress other
123 static inline good is_good(good) { return good(); }
125 typedef Stmt::child_range children_t();
126 template <class T> good implements_children(children_t T::*) {
129 static inline bad implements_children(children_t Stmt::*) {
133 typedef SourceRange getSourceRange_t() const;
134 template <class T> good implements_getSourceRange(getSourceRange_t T::*) {
137 static inline bad implements_getSourceRange(getSourceRange_t Stmt::*) {
141 #define ASSERT_IMPLEMENTS_children(type) \
142 (void) sizeof(is_good(implements_children(&type::children)))
143 #define ASSERT_IMPLEMENTS_getSourceRange(type) \
144 (void) sizeof(is_good(implements_getSourceRange(&type::getSourceRange)))
147 /// Check whether the various Stmt classes implement their member
149 static inline void check_implementations() {
150 #define ABSTRACT_STMT(type)
151 #define STMT(type, base) \
152 ASSERT_IMPLEMENTS_children(type); \
153 ASSERT_IMPLEMENTS_getSourceRange(type);
154 #include "clang/AST/StmtNodes.inc"
157 Stmt::child_range Stmt::children() {
158 switch (getStmtClass()) {
159 case Stmt::NoStmtClass: llvm_unreachable("statement without class");
160 #define ABSTRACT_STMT(type)
161 #define STMT(type, base) \
162 case Stmt::type##Class: \
163 return static_cast<type*>(this)->children();
164 #include "clang/AST/StmtNodes.inc"
166 llvm_unreachable("unknown statement kind!");
169 SourceRange Stmt::getSourceRange() const {
170 switch (getStmtClass()) {
171 case Stmt::NoStmtClass: llvm_unreachable("statement without class");
172 #define ABSTRACT_STMT(type)
173 #define STMT(type, base) \
174 case Stmt::type##Class: \
175 return static_cast<const type*>(this)->getSourceRange();
176 #include "clang/AST/StmtNodes.inc"
178 llvm_unreachable("unknown statement kind!");
181 // Amusing macro metaprogramming hack: check whether a class provides
182 // a more specific implementation of getLocStart() and getLocEnd().
184 // See also Expr.cpp:getExprLoc().
186 /// This implementation is used when a class provides a custom
187 /// implementation of getLocStart.
188 template <class S, class T>
189 SourceLocation getLocStartImpl(const Stmt *stmt,
190 SourceLocation (T::*v)() const) {
191 return static_cast<const S*>(stmt)->getLocStart();
194 /// This implementation is used when a class doesn't provide a custom
195 /// implementation of getLocStart. Overload resolution should pick it over
196 /// the implementation above because it's more specialized according to
197 /// function template partial ordering.
199 SourceLocation getLocStartImpl(const Stmt *stmt,
200 SourceLocation (Stmt::*v)() const) {
201 return static_cast<const S*>(stmt)->getSourceRange().getBegin();
204 /// This implementation is used when a class provides a custom
205 /// implementation of getLocEnd.
206 template <class S, class T>
207 SourceLocation getLocEndImpl(const Stmt *stmt,
208 SourceLocation (T::*v)() const) {
209 return static_cast<const S*>(stmt)->getLocEnd();
212 /// This implementation is used when a class doesn't provide a custom
213 /// implementation of getLocEnd. Overload resolution should pick it over
214 /// the implementation above because it's more specialized according to
215 /// function template partial ordering.
217 SourceLocation getLocEndImpl(const Stmt *stmt,
218 SourceLocation (Stmt::*v)() const) {
219 return static_cast<const S*>(stmt)->getSourceRange().getEnd();
223 SourceLocation Stmt::getLocStart() const {
224 switch (getStmtClass()) {
225 case Stmt::NoStmtClass: llvm_unreachable("statement without class");
226 #define ABSTRACT_STMT(type)
227 #define STMT(type, base) \
228 case Stmt::type##Class: \
229 return getLocStartImpl<type>(this, &type::getLocStart);
230 #include "clang/AST/StmtNodes.inc"
232 llvm_unreachable("unknown statement kind");
235 SourceLocation Stmt::getLocEnd() const {
236 switch (getStmtClass()) {
237 case Stmt::NoStmtClass: llvm_unreachable("statement without class");
238 #define ABSTRACT_STMT(type)
239 #define STMT(type, base) \
240 case Stmt::type##Class: \
241 return getLocEndImpl<type>(this, &type::getLocEnd);
242 #include "clang/AST/StmtNodes.inc"
244 llvm_unreachable("unknown statement kind");
247 CompoundStmt::CompoundStmt(ASTContext &C, Stmt **StmtStart, unsigned NumStmts,
248 SourceLocation LB, SourceLocation RB)
249 : Stmt(CompoundStmtClass), LBracLoc(LB), RBracLoc(RB) {
250 CompoundStmtBits.NumStmts = NumStmts;
251 assert(CompoundStmtBits.NumStmts == NumStmts &&
252 "NumStmts doesn't fit in bits of CompoundStmtBits.NumStmts!");
259 Body = new (C) Stmt*[NumStmts];
260 memcpy(Body, StmtStart, NumStmts * sizeof(*Body));
263 void CompoundStmt::setStmts(ASTContext &C, Stmt **Stmts, unsigned NumStmts) {
266 this->CompoundStmtBits.NumStmts = NumStmts;
268 Body = new (C) Stmt*[NumStmts];
269 memcpy(Body, Stmts, sizeof(Stmt *) * NumStmts);
272 const char *LabelStmt::getName() const {
273 return getDecl()->getIdentifier()->getNameStart();
276 AttributedStmt *AttributedStmt::Create(ASTContext &C, SourceLocation Loc,
277 ArrayRef<const Attr*> Attrs,
279 void *Mem = C.Allocate(sizeof(AttributedStmt) +
280 sizeof(Attr*) * (Attrs.size() - 1),
281 llvm::alignOf<AttributedStmt>());
282 return new (Mem) AttributedStmt(Loc, Attrs, SubStmt);
285 AttributedStmt *AttributedStmt::CreateEmpty(ASTContext &C, unsigned NumAttrs) {
286 assert(NumAttrs > 0 && "NumAttrs should be greater than zero");
287 void *Mem = C.Allocate(sizeof(AttributedStmt) +
288 sizeof(Attr*) * (NumAttrs - 1),
289 llvm::alignOf<AttributedStmt>());
290 return new (Mem) AttributedStmt(EmptyShell(), NumAttrs);
293 // This is defined here to avoid polluting Stmt.h with importing Expr.h
294 SourceRange ReturnStmt::getSourceRange() const {
296 return SourceRange(RetLoc, RetExpr->getLocEnd());
298 return SourceRange(RetLoc);
301 bool Stmt::hasImplicitControlFlow() const {
302 switch (StmtBits.sClass) {
307 case ConditionalOperatorClass:
308 case ChooseExprClass:
313 case Stmt::BinaryOperatorClass: {
314 const BinaryOperator* B = cast<BinaryOperator>(this);
315 if (B->isLogicalOp() || B->getOpcode() == BO_Comma)
323 Expr *AsmStmt::getOutputExpr(unsigned i) {
324 return cast<Expr>(Exprs[i]);
327 /// getOutputConstraint - Return the constraint string for the specified
328 /// output operand. All output constraints are known to be non-empty (either
330 StringRef AsmStmt::getOutputConstraint(unsigned i) const {
331 return getOutputConstraintLiteral(i)->getString();
334 /// getNumPlusOperands - Return the number of output operands that have a "+"
336 unsigned AsmStmt::getNumPlusOperands() const {
338 for (unsigned i = 0, e = getNumOutputs(); i != e; ++i)
339 if (isOutputPlusConstraint(i))
344 Expr *AsmStmt::getInputExpr(unsigned i) {
345 return cast<Expr>(Exprs[i + NumOutputs]);
347 void AsmStmt::setInputExpr(unsigned i, Expr *E) {
348 Exprs[i + NumOutputs] = E;
352 /// getInputConstraint - Return the specified input constraint. Unlike output
353 /// constraints, these can be empty.
354 StringRef AsmStmt::getInputConstraint(unsigned i) const {
355 return getInputConstraintLiteral(i)->getString();
359 void AsmStmt::setOutputsAndInputsAndClobbers(ASTContext &C,
360 IdentifierInfo **Names,
361 StringLiteral **Constraints,
365 StringLiteral **Clobbers,
366 unsigned NumClobbers) {
367 this->NumOutputs = NumOutputs;
368 this->NumInputs = NumInputs;
369 this->NumClobbers = NumClobbers;
371 unsigned NumExprs = NumOutputs + NumInputs;
373 C.Deallocate(this->Names);
374 this->Names = new (C) IdentifierInfo*[NumExprs];
375 std::copy(Names, Names + NumExprs, this->Names);
377 C.Deallocate(this->Exprs);
378 this->Exprs = new (C) Stmt*[NumExprs];
379 std::copy(Exprs, Exprs + NumExprs, this->Exprs);
381 C.Deallocate(this->Constraints);
382 this->Constraints = new (C) StringLiteral*[NumExprs];
383 std::copy(Constraints, Constraints + NumExprs, this->Constraints);
385 C.Deallocate(this->Clobbers);
386 this->Clobbers = new (C) StringLiteral*[NumClobbers];
387 std::copy(Clobbers, Clobbers + NumClobbers, this->Clobbers);
390 /// getNamedOperand - Given a symbolic operand reference like %[foo],
391 /// translate this into a numeric value needed to reference the same operand.
392 /// This returns -1 if the operand name is invalid.
393 int AsmStmt::getNamedOperand(StringRef SymbolicName) const {
394 unsigned NumPlusOperands = 0;
396 // Check if this is an output operand.
397 for (unsigned i = 0, e = getNumOutputs(); i != e; ++i) {
398 if (getOutputName(i) == SymbolicName)
402 for (unsigned i = 0, e = getNumInputs(); i != e; ++i)
403 if (getInputName(i) == SymbolicName)
404 return getNumOutputs() + NumPlusOperands + i;
410 /// AnalyzeAsmString - Analyze the asm string of the current asm, decomposing
411 /// it into pieces. If the asm string is erroneous, emit errors and return
412 /// true, otherwise return false.
413 unsigned AsmStmt::AnalyzeAsmString(SmallVectorImpl<AsmStringPiece>&Pieces,
414 ASTContext &C, unsigned &DiagOffs) const {
415 StringRef Str = getAsmString()->getString();
416 const char *StrStart = Str.begin();
417 const char *StrEnd = Str.end();
418 const char *CurPtr = StrStart;
420 // "Simple" inline asms have no constraints or operands, just convert the asm
421 // string to escape $'s.
424 for (; CurPtr != StrEnd; ++CurPtr) {
434 Pieces.push_back(AsmStringPiece(Result));
438 // CurStringPiece - The current string that we are building up as we scan the
440 std::string CurStringPiece;
442 bool HasVariants = !C.getTargetInfo().hasNoAsmVariants();
445 // Done with the string?
446 if (CurPtr == StrEnd) {
447 if (!CurStringPiece.empty())
448 Pieces.push_back(AsmStringPiece(CurStringPiece));
452 char CurChar = *CurPtr++;
454 case '$': CurStringPiece += "$$"; continue;
455 case '{': CurStringPiece += (HasVariants ? "$(" : "{"); continue;
456 case '|': CurStringPiece += (HasVariants ? "$|" : "|"); continue;
457 case '}': CurStringPiece += (HasVariants ? "$)" : "}"); continue;
461 CurStringPiece += CurChar;
465 // Escaped "%" character in asm string.
466 if (CurPtr == StrEnd) {
467 // % at end of string is invalid (no escape).
468 DiagOffs = CurPtr-StrStart-1;
469 return diag::err_asm_invalid_escape;
472 char EscapedChar = *CurPtr++;
473 if (EscapedChar == '%') { // %% -> %
474 // Escaped percentage sign.
475 CurStringPiece += '%';
479 if (EscapedChar == '=') { // %= -> Generate an unique ID.
480 CurStringPiece += "${:uid}";
484 // Otherwise, we have an operand. If we have accumulated a string so far,
485 // add it to the Pieces list.
486 if (!CurStringPiece.empty()) {
487 Pieces.push_back(AsmStringPiece(CurStringPiece));
488 CurStringPiece.clear();
491 // Handle %x4 and %x[foo] by capturing x as the modifier character.
492 char Modifier = '\0';
493 if (isalpha(EscapedChar)) {
494 if (CurPtr == StrEnd) { // Premature end.
495 DiagOffs = CurPtr-StrStart-1;
496 return diag::err_asm_invalid_escape;
498 Modifier = EscapedChar;
499 EscapedChar = *CurPtr++;
502 if (isdigit(EscapedChar)) {
503 // %n - Assembler operand n
507 while (CurPtr != StrEnd && isdigit(*CurPtr))
508 N = N*10 + ((*CurPtr++)-'0');
510 unsigned NumOperands =
511 getNumOutputs() + getNumPlusOperands() + getNumInputs();
512 if (N >= NumOperands) {
513 DiagOffs = CurPtr-StrStart-1;
514 return diag::err_asm_invalid_operand_number;
517 Pieces.push_back(AsmStringPiece(N, Modifier));
521 // Handle %[foo], a symbolic operand reference.
522 if (EscapedChar == '[') {
523 DiagOffs = CurPtr-StrStart-1;
526 const char *NameEnd = (const char*)memchr(CurPtr, ']', StrEnd-CurPtr);
528 return diag::err_asm_unterminated_symbolic_operand_name;
529 if (NameEnd == CurPtr)
530 return diag::err_asm_empty_symbolic_operand_name;
532 StringRef SymbolicName(CurPtr, NameEnd - CurPtr);
534 int N = getNamedOperand(SymbolicName);
536 // Verify that an operand with that name exists.
537 DiagOffs = CurPtr-StrStart;
538 return diag::err_asm_unknown_symbolic_operand_name;
540 Pieces.push_back(AsmStringPiece(N, Modifier));
546 DiagOffs = CurPtr-StrStart-1;
547 return diag::err_asm_invalid_escape;
551 QualType CXXCatchStmt::getCaughtType() const {
553 return ExceptionDecl->getType();
557 //===----------------------------------------------------------------------===//
559 //===----------------------------------------------------------------------===//
561 AsmStmt::AsmStmt(ASTContext &C, SourceLocation asmloc, bool issimple,
562 bool isvolatile, bool msasm,
563 unsigned numoutputs, unsigned numinputs,
564 IdentifierInfo **names, StringLiteral **constraints,
565 Expr **exprs, StringLiteral *asmstr, unsigned numclobbers,
566 StringLiteral **clobbers, SourceLocation rparenloc)
567 : Stmt(AsmStmtClass), AsmLoc(asmloc), RParenLoc(rparenloc), AsmStr(asmstr)
568 , IsSimple(issimple), IsVolatile(isvolatile), MSAsm(msasm)
569 , NumOutputs(numoutputs), NumInputs(numinputs), NumClobbers(numclobbers) {
571 unsigned NumExprs = NumOutputs + NumInputs;
573 Names = new (C) IdentifierInfo*[NumExprs];
574 std::copy(names, names + NumExprs, Names);
576 Exprs = new (C) Stmt*[NumExprs];
577 std::copy(exprs, exprs + NumExprs, Exprs);
579 Constraints = new (C) StringLiteral*[NumExprs];
580 std::copy(constraints, constraints + NumExprs, Constraints);
582 Clobbers = new (C) StringLiteral*[NumClobbers];
583 std::copy(clobbers, clobbers + NumClobbers, Clobbers);
586 MSAsmStmt::MSAsmStmt(ASTContext &C, SourceLocation asmloc,
587 SourceLocation lbraceloc, bool issimple, bool isvolatile,
588 ArrayRef<Token> asmtoks, ArrayRef<IdentifierInfo*> inputs,
589 ArrayRef<IdentifierInfo*> outputs, StringRef asmstr,
590 ArrayRef<StringRef> clobbers, SourceLocation endloc)
591 : Stmt(MSAsmStmtClass), AsmLoc(asmloc), LBraceLoc(lbraceloc), EndLoc(endloc),
592 AsmStr(asmstr.str()), IsSimple(issimple), IsVolatile(isvolatile),
593 NumAsmToks(asmtoks.size()), NumInputs(inputs.size()),
594 NumOutputs(outputs.size()), NumClobbers(clobbers.size()) {
596 unsigned NumExprs = NumOutputs + NumInputs;
598 Names = new (C) IdentifierInfo*[NumExprs];
599 for (unsigned i = 0, e = NumOutputs; i != e; ++i)
600 Names[i] = outputs[i];
601 for (unsigned i = NumOutputs, e = NumExprs; i != e; ++i)
602 Names[i] = inputs[i];
604 AsmToks = new (C) Token[NumAsmToks];
605 for (unsigned i = 0, e = NumAsmToks; i != e; ++i)
606 AsmToks[i] = asmtoks[i];
608 Clobbers = new (C) StringRef[NumClobbers];
609 for (unsigned i = 0, e = NumClobbers; i != e; ++i) {
610 // FIXME: Avoid the allocation/copy if at all possible.
611 size_t size = clobbers[i].size();
612 char *dest = new (C) char[size];
613 std::strncpy(dest, clobbers[i].data(), size);
614 Clobbers[i] = StringRef(dest, size);
618 ObjCForCollectionStmt::ObjCForCollectionStmt(Stmt *Elem, Expr *Collect,
619 Stmt *Body, SourceLocation FCL,
621 : Stmt(ObjCForCollectionStmtClass) {
622 SubExprs[ELEM] = Elem;
623 SubExprs[COLLECTION] = reinterpret_cast<Stmt*>(Collect);
624 SubExprs[BODY] = Body;
629 ObjCAtTryStmt::ObjCAtTryStmt(SourceLocation atTryLoc, Stmt *atTryStmt,
630 Stmt **CatchStmts, unsigned NumCatchStmts,
632 : Stmt(ObjCAtTryStmtClass), AtTryLoc(atTryLoc),
633 NumCatchStmts(NumCatchStmts), HasFinally(atFinallyStmt != 0)
635 Stmt **Stmts = getStmts();
636 Stmts[0] = atTryStmt;
637 for (unsigned I = 0; I != NumCatchStmts; ++I)
638 Stmts[I + 1] = CatchStmts[I];
641 Stmts[NumCatchStmts + 1] = atFinallyStmt;
644 ObjCAtTryStmt *ObjCAtTryStmt::Create(ASTContext &Context,
645 SourceLocation atTryLoc,
648 unsigned NumCatchStmts,
649 Stmt *atFinallyStmt) {
650 unsigned Size = sizeof(ObjCAtTryStmt) +
651 (1 + NumCatchStmts + (atFinallyStmt != 0)) * sizeof(Stmt *);
652 void *Mem = Context.Allocate(Size, llvm::alignOf<ObjCAtTryStmt>());
653 return new (Mem) ObjCAtTryStmt(atTryLoc, atTryStmt, CatchStmts, NumCatchStmts,
657 ObjCAtTryStmt *ObjCAtTryStmt::CreateEmpty(ASTContext &Context,
658 unsigned NumCatchStmts,
660 unsigned Size = sizeof(ObjCAtTryStmt) +
661 (1 + NumCatchStmts + HasFinally) * sizeof(Stmt *);
662 void *Mem = Context.Allocate(Size, llvm::alignOf<ObjCAtTryStmt>());
663 return new (Mem) ObjCAtTryStmt(EmptyShell(), NumCatchStmts, HasFinally);
666 SourceRange ObjCAtTryStmt::getSourceRange() const {
667 SourceLocation EndLoc;
669 EndLoc = getFinallyStmt()->getLocEnd();
670 else if (NumCatchStmts)
671 EndLoc = getCatchStmt(NumCatchStmts - 1)->getLocEnd();
673 EndLoc = getTryBody()->getLocEnd();
675 return SourceRange(AtTryLoc, EndLoc);
678 CXXTryStmt *CXXTryStmt::Create(ASTContext &C, SourceLocation tryLoc,
679 Stmt *tryBlock, Stmt **handlers,
680 unsigned numHandlers) {
681 std::size_t Size = sizeof(CXXTryStmt);
682 Size += ((numHandlers + 1) * sizeof(Stmt));
684 void *Mem = C.Allocate(Size, llvm::alignOf<CXXTryStmt>());
685 return new (Mem) CXXTryStmt(tryLoc, tryBlock, handlers, numHandlers);
688 CXXTryStmt *CXXTryStmt::Create(ASTContext &C, EmptyShell Empty,
689 unsigned numHandlers) {
690 std::size_t Size = sizeof(CXXTryStmt);
691 Size += ((numHandlers + 1) * sizeof(Stmt));
693 void *Mem = C.Allocate(Size, llvm::alignOf<CXXTryStmt>());
694 return new (Mem) CXXTryStmt(Empty, numHandlers);
697 CXXTryStmt::CXXTryStmt(SourceLocation tryLoc, Stmt *tryBlock,
698 Stmt **handlers, unsigned numHandlers)
699 : Stmt(CXXTryStmtClass), TryLoc(tryLoc), NumHandlers(numHandlers) {
700 Stmt **Stmts = reinterpret_cast<Stmt **>(this + 1);
702 std::copy(handlers, handlers + NumHandlers, Stmts + 1);
705 CXXForRangeStmt::CXXForRangeStmt(DeclStmt *Range, DeclStmt *BeginEndStmt,
706 Expr *Cond, Expr *Inc, DeclStmt *LoopVar,
707 Stmt *Body, SourceLocation FL,
708 SourceLocation CL, SourceLocation RPL)
709 : Stmt(CXXForRangeStmtClass), ForLoc(FL), ColonLoc(CL), RParenLoc(RPL) {
710 SubExprs[RANGE] = Range;
711 SubExprs[BEGINEND] = BeginEndStmt;
712 SubExprs[COND] = reinterpret_cast<Stmt*>(Cond);
713 SubExprs[INC] = reinterpret_cast<Stmt*>(Inc);
714 SubExprs[LOOPVAR] = LoopVar;
715 SubExprs[BODY] = Body;
718 Expr *CXXForRangeStmt::getRangeInit() {
719 DeclStmt *RangeStmt = getRangeStmt();
720 VarDecl *RangeDecl = dyn_cast_or_null<VarDecl>(RangeStmt->getSingleDecl());
721 assert(RangeDecl &&& "for-range should have a single var decl");
722 return RangeDecl->getInit();
725 const Expr *CXXForRangeStmt::getRangeInit() const {
726 return const_cast<CXXForRangeStmt*>(this)->getRangeInit();
729 VarDecl *CXXForRangeStmt::getLoopVariable() {
730 Decl *LV = cast<DeclStmt>(getLoopVarStmt())->getSingleDecl();
731 assert(LV && "No loop variable in CXXForRangeStmt");
732 return cast<VarDecl>(LV);
735 const VarDecl *CXXForRangeStmt::getLoopVariable() const {
736 return const_cast<CXXForRangeStmt*>(this)->getLoopVariable();
739 IfStmt::IfStmt(ASTContext &C, SourceLocation IL, VarDecl *var, Expr *cond,
740 Stmt *then, SourceLocation EL, Stmt *elsev)
741 : Stmt(IfStmtClass), IfLoc(IL), ElseLoc(EL)
743 setConditionVariable(C, var);
744 SubExprs[COND] = reinterpret_cast<Stmt*>(cond);
745 SubExprs[THEN] = then;
746 SubExprs[ELSE] = elsev;
749 VarDecl *IfStmt::getConditionVariable() const {
753 DeclStmt *DS = cast<DeclStmt>(SubExprs[VAR]);
754 return cast<VarDecl>(DS->getSingleDecl());
757 void IfStmt::setConditionVariable(ASTContext &C, VarDecl *V) {
763 SourceRange VarRange = V->getSourceRange();
764 SubExprs[VAR] = new (C) DeclStmt(DeclGroupRef(V), VarRange.getBegin(),
768 ForStmt::ForStmt(ASTContext &C, Stmt *Init, Expr *Cond, VarDecl *condVar,
769 Expr *Inc, Stmt *Body, SourceLocation FL, SourceLocation LP,
771 : Stmt(ForStmtClass), ForLoc(FL), LParenLoc(LP), RParenLoc(RP)
773 SubExprs[INIT] = Init;
774 setConditionVariable(C, condVar);
775 SubExprs[COND] = reinterpret_cast<Stmt*>(Cond);
776 SubExprs[INC] = reinterpret_cast<Stmt*>(Inc);
777 SubExprs[BODY] = Body;
780 VarDecl *ForStmt::getConditionVariable() const {
781 if (!SubExprs[CONDVAR])
784 DeclStmt *DS = cast<DeclStmt>(SubExprs[CONDVAR]);
785 return cast<VarDecl>(DS->getSingleDecl());
788 void ForStmt::setConditionVariable(ASTContext &C, VarDecl *V) {
790 SubExprs[CONDVAR] = 0;
794 SourceRange VarRange = V->getSourceRange();
795 SubExprs[CONDVAR] = new (C) DeclStmt(DeclGroupRef(V), VarRange.getBegin(),
799 SwitchStmt::SwitchStmt(ASTContext &C, VarDecl *Var, Expr *cond)
800 : Stmt(SwitchStmtClass), FirstCase(0), AllEnumCasesCovered(0)
802 setConditionVariable(C, Var);
803 SubExprs[COND] = reinterpret_cast<Stmt*>(cond);
804 SubExprs[BODY] = NULL;
807 VarDecl *SwitchStmt::getConditionVariable() const {
811 DeclStmt *DS = cast<DeclStmt>(SubExprs[VAR]);
812 return cast<VarDecl>(DS->getSingleDecl());
815 void SwitchStmt::setConditionVariable(ASTContext &C, VarDecl *V) {
821 SourceRange VarRange = V->getSourceRange();
822 SubExprs[VAR] = new (C) DeclStmt(DeclGroupRef(V), VarRange.getBegin(),
826 Stmt *SwitchCase::getSubStmt() {
827 if (isa<CaseStmt>(this))
828 return cast<CaseStmt>(this)->getSubStmt();
829 return cast<DefaultStmt>(this)->getSubStmt();
832 WhileStmt::WhileStmt(ASTContext &C, VarDecl *Var, Expr *cond, Stmt *body,
834 : Stmt(WhileStmtClass) {
835 setConditionVariable(C, Var);
836 SubExprs[COND] = reinterpret_cast<Stmt*>(cond);
837 SubExprs[BODY] = body;
841 VarDecl *WhileStmt::getConditionVariable() const {
845 DeclStmt *DS = cast<DeclStmt>(SubExprs[VAR]);
846 return cast<VarDecl>(DS->getSingleDecl());
849 void WhileStmt::setConditionVariable(ASTContext &C, VarDecl *V) {
855 SourceRange VarRange = V->getSourceRange();
856 SubExprs[VAR] = new (C) DeclStmt(DeclGroupRef(V), VarRange.getBegin(),
861 LabelDecl *IndirectGotoStmt::getConstantTarget() {
862 if (AddrLabelExpr *E =
863 dyn_cast<AddrLabelExpr>(getTarget()->IgnoreParenImpCasts()))
864 return E->getLabel();
869 const Expr* ReturnStmt::getRetValue() const {
870 return cast_or_null<Expr>(RetExpr);
872 Expr* ReturnStmt::getRetValue() {
873 return cast_or_null<Expr>(RetExpr);
876 SEHTryStmt::SEHTryStmt(bool IsCXXTry,
877 SourceLocation TryLoc,
880 : Stmt(SEHTryStmtClass),
884 Children[TRY] = TryBlock;
885 Children[HANDLER] = Handler;
888 SEHTryStmt* SEHTryStmt::Create(ASTContext &C,
890 SourceLocation TryLoc,
893 return new(C) SEHTryStmt(IsCXXTry,TryLoc,TryBlock,Handler);
896 SEHExceptStmt* SEHTryStmt::getExceptHandler() const {
897 return dyn_cast<SEHExceptStmt>(getHandler());
900 SEHFinallyStmt* SEHTryStmt::getFinallyHandler() const {
901 return dyn_cast<SEHFinallyStmt>(getHandler());
904 SEHExceptStmt::SEHExceptStmt(SourceLocation Loc,
907 : Stmt(SEHExceptStmtClass),
910 Children[FILTER_EXPR] = reinterpret_cast<Stmt*>(FilterExpr);
911 Children[BLOCK] = Block;
914 SEHExceptStmt* SEHExceptStmt::Create(ASTContext &C,
918 return new(C) SEHExceptStmt(Loc,FilterExpr,Block);
921 SEHFinallyStmt::SEHFinallyStmt(SourceLocation Loc,
923 : Stmt(SEHFinallyStmtClass),
928 SEHFinallyStmt* SEHFinallyStmt::Create(ASTContext &C,
931 return new(C)SEHFinallyStmt(Loc,Block);