| //===--- Stmt.cpp - Statement AST Node Implementation ---------------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file implements the Stmt class and statement subclasses. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "clang/AST/Stmt.h" |
| #include "clang/AST/ExprCXX.h" |
| #include "clang/AST/ExprObjC.h" |
| #include "clang/AST/StmtCXX.h" |
| #include "clang/AST/StmtObjC.h" |
| #include "clang/AST/Type.h" |
| #include "clang/AST/ASTContext.h" |
| #include "clang/AST/ASTDiagnostic.h" |
| #include "clang/Basic/TargetInfo.h" |
| #include <cstdio> |
| using namespace clang; |
| |
| static struct StmtClassNameTable { |
| const char *Name; |
| unsigned Counter; |
| unsigned Size; |
| } StmtClassInfo[Stmt::lastStmtConstant+1]; |
| |
| static StmtClassNameTable &getStmtInfoTableEntry(Stmt::StmtClass E) { |
| static bool Initialized = false; |
| if (Initialized) |
| return StmtClassInfo[E]; |
| |
| // Intialize the table on the first use. |
| Initialized = true; |
| #define ABSTRACT_STMT(STMT) |
| #define STMT(CLASS, PARENT) \ |
| StmtClassInfo[(unsigned)Stmt::CLASS##Class].Name = #CLASS; \ |
| StmtClassInfo[(unsigned)Stmt::CLASS##Class].Size = sizeof(CLASS); |
| #include "clang/AST/StmtNodes.inc" |
| |
| return StmtClassInfo[E]; |
| } |
| |
| const char *Stmt::getStmtClassName() const { |
| return getStmtInfoTableEntry((StmtClass)sClass).Name; |
| } |
| |
| void Stmt::PrintStats() { |
| // Ensure the table is primed. |
| getStmtInfoTableEntry(Stmt::NullStmtClass); |
| |
| unsigned sum = 0; |
| fprintf(stderr, "*** Stmt/Expr Stats:\n"); |
| for (int i = 0; i != Stmt::lastStmtConstant+1; i++) { |
| if (StmtClassInfo[i].Name == 0) continue; |
| sum += StmtClassInfo[i].Counter; |
| } |
| fprintf(stderr, " %d stmts/exprs total.\n", sum); |
| sum = 0; |
| for (int i = 0; i != Stmt::lastStmtConstant+1; i++) { |
| if (StmtClassInfo[i].Name == 0) continue; |
| if (StmtClassInfo[i].Counter == 0) continue; |
| fprintf(stderr, " %d %s, %d each (%d bytes)\n", |
| StmtClassInfo[i].Counter, StmtClassInfo[i].Name, |
| StmtClassInfo[i].Size, |
| StmtClassInfo[i].Counter*StmtClassInfo[i].Size); |
| sum += StmtClassInfo[i].Counter*StmtClassInfo[i].Size; |
| } |
| fprintf(stderr, "Total bytes = %d\n", sum); |
| } |
| |
| void Stmt::addStmtClass(StmtClass s) { |
| ++getStmtInfoTableEntry(s).Counter; |
| } |
| |
| static bool StatSwitch = false; |
| |
| bool Stmt::CollectingStats(bool Enable) { |
| if (Enable) StatSwitch = true; |
| return StatSwitch; |
| } |
| |
| void CompoundStmt::setStmts(ASTContext &C, Stmt **Stmts, unsigned NumStmts) { |
| if (this->Body) |
| C.Deallocate(Body); |
| this->NumStmts = NumStmts; |
| |
| Body = new (C) Stmt*[NumStmts]; |
| memcpy(Body, Stmts, sizeof(Stmt *) * NumStmts); |
| } |
| |
| const char *LabelStmt::getName() const { |
| return getID()->getNameStart(); |
| } |
| |
| // This is defined here to avoid polluting Stmt.h with importing Expr.h |
| SourceRange ReturnStmt::getSourceRange() const { |
| if (RetExpr) |
| return SourceRange(RetLoc, RetExpr->getLocEnd()); |
| else |
| return SourceRange(RetLoc); |
| } |
| |
| bool Stmt::hasImplicitControlFlow() const { |
| switch (sClass) { |
| default: |
| return false; |
| |
| case CallExprClass: |
| case ConditionalOperatorClass: |
| case ChooseExprClass: |
| case StmtExprClass: |
| case DeclStmtClass: |
| return true; |
| |
| case Stmt::BinaryOperatorClass: { |
| const BinaryOperator* B = cast<BinaryOperator>(this); |
| if (B->isLogicalOp() || B->getOpcode() == BinaryOperator::Comma) |
| return true; |
| else |
| return false; |
| } |
| } |
| } |
| |
| Expr *AsmStmt::getOutputExpr(unsigned i) { |
| return cast<Expr>(Exprs[i]); |
| } |
| |
| /// getOutputConstraint - Return the constraint string for the specified |
| /// output operand. All output constraints are known to be non-empty (either |
| /// '=' or '+'). |
| llvm::StringRef AsmStmt::getOutputConstraint(unsigned i) const { |
| return getOutputConstraintLiteral(i)->getString(); |
| } |
| |
| /// getNumPlusOperands - Return the number of output operands that have a "+" |
| /// constraint. |
| unsigned AsmStmt::getNumPlusOperands() const { |
| unsigned Res = 0; |
| for (unsigned i = 0, e = getNumOutputs(); i != e; ++i) |
| if (isOutputPlusConstraint(i)) |
| ++Res; |
| return Res; |
| } |
| |
| Expr *AsmStmt::getInputExpr(unsigned i) { |
| return cast<Expr>(Exprs[i + NumOutputs]); |
| } |
| |
| /// getInputConstraint - Return the specified input constraint. Unlike output |
| /// constraints, these can be empty. |
| llvm::StringRef AsmStmt::getInputConstraint(unsigned i) const { |
| return getInputConstraintLiteral(i)->getString(); |
| } |
| |
| |
| void AsmStmt::setOutputsAndInputsAndClobbers(ASTContext &C, |
| IdentifierInfo **Names, |
| StringLiteral **Constraints, |
| Stmt **Exprs, |
| unsigned NumOutputs, |
| unsigned NumInputs, |
| StringLiteral **Clobbers, |
| unsigned NumClobbers) { |
| this->NumOutputs = NumOutputs; |
| this->NumInputs = NumInputs; |
| this->NumClobbers = NumClobbers; |
| |
| unsigned NumExprs = NumOutputs + NumInputs; |
| |
| C.Deallocate(this->Names); |
| this->Names = new (C) IdentifierInfo*[NumExprs]; |
| std::copy(Names, Names + NumExprs, this->Names); |
| |
| C.Deallocate(this->Exprs); |
| this->Exprs = new (C) Stmt*[NumExprs]; |
| std::copy(Exprs, Exprs + NumExprs, this->Exprs); |
| |
| C.Deallocate(this->Constraints); |
| this->Constraints = new (C) StringLiteral*[NumExprs]; |
| std::copy(Constraints, Constraints + NumExprs, this->Constraints); |
| |
| C.Deallocate(this->Clobbers); |
| this->Clobbers = new (C) StringLiteral*[NumClobbers]; |
| std::copy(Clobbers, Clobbers + NumClobbers, this->Clobbers); |
| } |
| |
| /// getNamedOperand - Given a symbolic operand reference like %[foo], |
| /// translate this into a numeric value needed to reference the same operand. |
| /// This returns -1 if the operand name is invalid. |
| int AsmStmt::getNamedOperand(llvm::StringRef SymbolicName) const { |
| unsigned NumPlusOperands = 0; |
| |
| // Check if this is an output operand. |
| for (unsigned i = 0, e = getNumOutputs(); i != e; ++i) { |
| if (getOutputName(i) == SymbolicName) |
| return i; |
| } |
| |
| for (unsigned i = 0, e = getNumInputs(); i != e; ++i) |
| if (getInputName(i) == SymbolicName) |
| return getNumOutputs() + NumPlusOperands + i; |
| |
| // Not found. |
| return -1; |
| } |
| |
| /// AnalyzeAsmString - Analyze the asm string of the current asm, decomposing |
| /// it into pieces. If the asm string is erroneous, emit errors and return |
| /// true, otherwise return false. |
| unsigned AsmStmt::AnalyzeAsmString(llvm::SmallVectorImpl<AsmStringPiece>&Pieces, |
| ASTContext &C, unsigned &DiagOffs) const { |
| const char *StrStart = getAsmString()->getStrData(); |
| const char *StrEnd = StrStart + getAsmString()->getByteLength(); |
| const char *CurPtr = StrStart; |
| |
| // "Simple" inline asms have no constraints or operands, just convert the asm |
| // string to escape $'s. |
| if (isSimple()) { |
| std::string Result; |
| for (; CurPtr != StrEnd; ++CurPtr) { |
| switch (*CurPtr) { |
| case '$': |
| Result += "$$"; |
| break; |
| default: |
| Result += *CurPtr; |
| break; |
| } |
| } |
| Pieces.push_back(AsmStringPiece(Result)); |
| return 0; |
| } |
| |
| // CurStringPiece - The current string that we are building up as we scan the |
| // asm string. |
| std::string CurStringPiece; |
| |
| bool HasVariants = !C.Target.hasNoAsmVariants(); |
| |
| while (1) { |
| // Done with the string? |
| if (CurPtr == StrEnd) { |
| if (!CurStringPiece.empty()) |
| Pieces.push_back(AsmStringPiece(CurStringPiece)); |
| return 0; |
| } |
| |
| char CurChar = *CurPtr++; |
| switch (CurChar) { |
| case '$': CurStringPiece += "$$"; continue; |
| case '{': CurStringPiece += (HasVariants ? "$(" : "{"); continue; |
| case '|': CurStringPiece += (HasVariants ? "$|" : "|"); continue; |
| case '}': CurStringPiece += (HasVariants ? "$)" : "}"); continue; |
| case '%': |
| break; |
| default: |
| CurStringPiece += CurChar; |
| continue; |
| } |
| |
| // Escaped "%" character in asm string. |
| if (CurPtr == StrEnd) { |
| // % at end of string is invalid (no escape). |
| DiagOffs = CurPtr-StrStart-1; |
| return diag::err_asm_invalid_escape; |
| } |
| |
| char EscapedChar = *CurPtr++; |
| if (EscapedChar == '%') { // %% -> % |
| // Escaped percentage sign. |
| CurStringPiece += '%'; |
| continue; |
| } |
| |
| if (EscapedChar == '=') { // %= -> Generate an unique ID. |
| CurStringPiece += "${:uid}"; |
| continue; |
| } |
| |
| // Otherwise, we have an operand. If we have accumulated a string so far, |
| // add it to the Pieces list. |
| if (!CurStringPiece.empty()) { |
| Pieces.push_back(AsmStringPiece(CurStringPiece)); |
| CurStringPiece.clear(); |
| } |
| |
| // Handle %x4 and %x[foo] by capturing x as the modifier character. |
| char Modifier = '\0'; |
| if (isalpha(EscapedChar)) { |
| Modifier = EscapedChar; |
| EscapedChar = *CurPtr++; |
| } |
| |
| if (isdigit(EscapedChar)) { |
| // %n - Assembler operand n |
| unsigned N = 0; |
| |
| --CurPtr; |
| while (CurPtr != StrEnd && isdigit(*CurPtr)) |
| N = N*10 + ((*CurPtr++)-'0'); |
| |
| unsigned NumOperands = |
| getNumOutputs() + getNumPlusOperands() + getNumInputs(); |
| if (N >= NumOperands) { |
| DiagOffs = CurPtr-StrStart-1; |
| return diag::err_asm_invalid_operand_number; |
| } |
| |
| Pieces.push_back(AsmStringPiece(N, Modifier)); |
| continue; |
| } |
| |
| // Handle %[foo], a symbolic operand reference. |
| if (EscapedChar == '[') { |
| DiagOffs = CurPtr-StrStart-1; |
| |
| // Find the ']'. |
| const char *NameEnd = (const char*)memchr(CurPtr, ']', StrEnd-CurPtr); |
| if (NameEnd == 0) |
| return diag::err_asm_unterminated_symbolic_operand_name; |
| if (NameEnd == CurPtr) |
| return diag::err_asm_empty_symbolic_operand_name; |
| |
| llvm::StringRef SymbolicName(CurPtr, NameEnd - CurPtr); |
| |
| int N = getNamedOperand(SymbolicName); |
| if (N == -1) { |
| // Verify that an operand with that name exists. |
| DiagOffs = CurPtr-StrStart; |
| return diag::err_asm_unknown_symbolic_operand_name; |
| } |
| Pieces.push_back(AsmStringPiece(N, Modifier)); |
| |
| CurPtr = NameEnd+1; |
| continue; |
| } |
| |
| DiagOffs = CurPtr-StrStart-1; |
| return diag::err_asm_invalid_escape; |
| } |
| } |
| |
| QualType CXXCatchStmt::getCaughtType() const { |
| if (ExceptionDecl) |
| return ExceptionDecl->getType(); |
| return QualType(); |
| } |
| |
| //===----------------------------------------------------------------------===// |
| // Constructors |
| //===----------------------------------------------------------------------===// |
| |
| AsmStmt::AsmStmt(ASTContext &C, SourceLocation asmloc, bool issimple, |
| bool isvolatile, bool msasm, |
| unsigned numoutputs, unsigned numinputs, |
| IdentifierInfo **names, StringLiteral **constraints, |
| Expr **exprs, StringLiteral *asmstr, unsigned numclobbers, |
| StringLiteral **clobbers, SourceLocation rparenloc) |
| : Stmt(AsmStmtClass), AsmLoc(asmloc), RParenLoc(rparenloc), AsmStr(asmstr) |
| , IsSimple(issimple), IsVolatile(isvolatile), MSAsm(msasm) |
| , NumOutputs(numoutputs), NumInputs(numinputs), NumClobbers(numclobbers) { |
| |
| unsigned NumExprs = NumOutputs +NumInputs; |
| |
| Names = new (C) IdentifierInfo*[NumExprs]; |
| std::copy(names, names + NumExprs, Names); |
| |
| Exprs = new (C) Stmt*[NumExprs]; |
| std::copy(exprs, exprs + NumExprs, Exprs); |
| |
| Constraints = new (C) StringLiteral*[NumExprs]; |
| std::copy(constraints, constraints + NumExprs, Constraints); |
| |
| Clobbers = new (C) StringLiteral*[NumClobbers]; |
| std::copy(clobbers, clobbers + NumClobbers, Clobbers); |
| } |
| |
| ObjCForCollectionStmt::ObjCForCollectionStmt(Stmt *Elem, Expr *Collect, |
| Stmt *Body, SourceLocation FCL, |
| SourceLocation RPL) |
| : Stmt(ObjCForCollectionStmtClass) { |
| SubExprs[ELEM] = Elem; |
| SubExprs[COLLECTION] = reinterpret_cast<Stmt*>(Collect); |
| SubExprs[BODY] = Body; |
| ForLoc = FCL; |
| RParenLoc = RPL; |
| } |
| |
| ObjCAtTryStmt::ObjCAtTryStmt(SourceLocation atTryLoc, Stmt *atTryStmt, |
| Stmt **CatchStmts, unsigned NumCatchStmts, |
| Stmt *atFinallyStmt) |
| : Stmt(ObjCAtTryStmtClass), AtTryLoc(atTryLoc), |
| NumCatchStmts(NumCatchStmts), HasFinally(atFinallyStmt != 0) |
| { |
| Stmt **Stmts = getStmts(); |
| Stmts[0] = atTryStmt; |
| for (unsigned I = 0; I != NumCatchStmts; ++I) |
| Stmts[I + 1] = CatchStmts[I]; |
| |
| if (HasFinally) |
| Stmts[NumCatchStmts + 1] = atFinallyStmt; |
| } |
| |
| ObjCAtTryStmt *ObjCAtTryStmt::Create(ASTContext &Context, |
| SourceLocation atTryLoc, |
| Stmt *atTryStmt, |
| Stmt **CatchStmts, |
| unsigned NumCatchStmts, |
| Stmt *atFinallyStmt) { |
| unsigned Size = sizeof(ObjCAtTryStmt) + |
| (1 + NumCatchStmts + (atFinallyStmt != 0)) * sizeof(Stmt *); |
| void *Mem = Context.Allocate(Size, llvm::alignof<ObjCAtTryStmt>()); |
| return new (Mem) ObjCAtTryStmt(atTryLoc, atTryStmt, CatchStmts, NumCatchStmts, |
| atFinallyStmt); |
| } |
| |
| ObjCAtTryStmt *ObjCAtTryStmt::CreateEmpty(ASTContext &Context, |
| unsigned NumCatchStmts, |
| bool HasFinally) { |
| unsigned Size = sizeof(ObjCAtTryStmt) + |
| (1 + NumCatchStmts + HasFinally) * sizeof(Stmt *); |
| void *Mem = Context.Allocate(Size, llvm::alignof<ObjCAtTryStmt>()); |
| return new (Mem) ObjCAtTryStmt(EmptyShell(), NumCatchStmts, HasFinally); |
| } |
| |
| SourceRange ObjCAtTryStmt::getSourceRange() const { |
| SourceLocation EndLoc; |
| if (HasFinally) |
| EndLoc = getFinallyStmt()->getLocEnd(); |
| else if (NumCatchStmts) |
| EndLoc = getCatchStmt(NumCatchStmts - 1)->getLocEnd(); |
| else |
| EndLoc = getTryBody()->getLocEnd(); |
| |
| return SourceRange(AtTryLoc, EndLoc); |
| } |
| |
| CXXTryStmt *CXXTryStmt::Create(ASTContext &C, SourceLocation tryLoc, |
| Stmt *tryBlock, Stmt **handlers, |
| unsigned numHandlers) { |
| std::size_t Size = sizeof(CXXTryStmt); |
| Size += ((numHandlers + 1) * sizeof(Stmt)); |
| |
| void *Mem = C.Allocate(Size, llvm::alignof<CXXTryStmt>()); |
| return new (Mem) CXXTryStmt(tryLoc, tryBlock, handlers, numHandlers); |
| } |
| |
| CXXTryStmt::CXXTryStmt(SourceLocation tryLoc, Stmt *tryBlock, |
| Stmt **handlers, unsigned numHandlers) |
| : Stmt(CXXTryStmtClass), TryLoc(tryLoc), NumHandlers(numHandlers) { |
| Stmt **Stmts = reinterpret_cast<Stmt **>(this + 1); |
| Stmts[0] = tryBlock; |
| std::copy(handlers, handlers + NumHandlers, Stmts + 1); |
| } |
| |
| //===----------------------------------------------------------------------===// |
| // AST Destruction. |
| //===----------------------------------------------------------------------===// |
| |
| void Stmt::DestroyChildren(ASTContext &C) { |
| for (child_iterator I = child_begin(), E = child_end(); I !=E; ) |
| if (Stmt* Child = *I++) Child->Destroy(C); |
| } |
| |
| static void BranchDestroy(ASTContext &C, Stmt *S, Stmt **SubExprs, |
| unsigned NumExprs) { |
| // We do not use child_iterator here because that will include |
| // the expressions referenced by the condition variable. |
| for (Stmt **I = SubExprs, **E = SubExprs + NumExprs; I != E; ++I) |
| if (Stmt *Child = *I) Child->Destroy(C); |
| |
| S->~Stmt(); |
| C.Deallocate((void *) S); |
| } |
| |
| void Stmt::DoDestroy(ASTContext &C) { |
| DestroyChildren(C); |
| this->~Stmt(); |
| C.Deallocate((void *)this); |
| } |
| |
| void CXXCatchStmt::DoDestroy(ASTContext& C) { |
| if (ExceptionDecl) |
| ExceptionDecl->Destroy(C); |
| Stmt::DoDestroy(C); |
| } |
| |
| void DeclStmt::DoDestroy(ASTContext &C) { |
| // Don't use StmtIterator to iterate over the Decls, as that can recurse |
| // into VLA size expressions (which are owned by the VLA). Further, Decls |
| // are owned by the DeclContext, and will be destroyed with them. |
| if (DG.isDeclGroup()) |
| DG.getDeclGroup().Destroy(C); |
| } |
| |
| IfStmt::IfStmt(ASTContext &C, SourceLocation IL, VarDecl *var, Expr *cond, |
| Stmt *then, SourceLocation EL, Stmt *elsev) |
| : Stmt(IfStmtClass), IfLoc(IL), ElseLoc(EL) |
| { |
| setConditionVariable(C, var); |
| SubExprs[COND] = reinterpret_cast<Stmt*>(cond); |
| SubExprs[THEN] = then; |
| SubExprs[ELSE] = elsev; |
| } |
| |
| VarDecl *IfStmt::getConditionVariable() const { |
| if (!SubExprs[VAR]) |
| return 0; |
| |
| DeclStmt *DS = cast<DeclStmt>(SubExprs[VAR]); |
| return cast<VarDecl>(DS->getSingleDecl()); |
| } |
| |
| void IfStmt::setConditionVariable(ASTContext &C, VarDecl *V) { |
| if (!V) { |
| SubExprs[VAR] = 0; |
| return; |
| } |
| |
| SubExprs[VAR] = new (C) DeclStmt(DeclGroupRef(V), |
| V->getSourceRange().getBegin(), |
| V->getSourceRange().getEnd()); |
| } |
| |
| void IfStmt::DoDestroy(ASTContext &C) { |
| BranchDestroy(C, this, SubExprs, END_EXPR); |
| } |
| |
| ForStmt::ForStmt(ASTContext &C, Stmt *Init, Expr *Cond, VarDecl *condVar, |
| Expr *Inc, Stmt *Body, SourceLocation FL, SourceLocation LP, |
| SourceLocation RP) |
| : Stmt(ForStmtClass), ForLoc(FL), LParenLoc(LP), RParenLoc(RP) |
| { |
| SubExprs[INIT] = Init; |
| setConditionVariable(C, condVar); |
| SubExprs[COND] = reinterpret_cast<Stmt*>(Cond); |
| SubExprs[INC] = reinterpret_cast<Stmt*>(Inc); |
| SubExprs[BODY] = Body; |
| } |
| |
| VarDecl *ForStmt::getConditionVariable() const { |
| if (!SubExprs[CONDVAR]) |
| return 0; |
| |
| DeclStmt *DS = cast<DeclStmt>(SubExprs[CONDVAR]); |
| return cast<VarDecl>(DS->getSingleDecl()); |
| } |
| |
| void ForStmt::setConditionVariable(ASTContext &C, VarDecl *V) { |
| if (!V) { |
| SubExprs[CONDVAR] = 0; |
| return; |
| } |
| |
| SubExprs[CONDVAR] = new (C) DeclStmt(DeclGroupRef(V), |
| V->getSourceRange().getBegin(), |
| V->getSourceRange().getEnd()); |
| } |
| |
| void ForStmt::DoDestroy(ASTContext &C) { |
| BranchDestroy(C, this, SubExprs, END_EXPR); |
| } |
| |
| SwitchStmt::SwitchStmt(ASTContext &C, VarDecl *Var, Expr *cond) |
| : Stmt(SwitchStmtClass), FirstCase(0) |
| { |
| setConditionVariable(C, Var); |
| SubExprs[COND] = reinterpret_cast<Stmt*>(cond); |
| SubExprs[BODY] = NULL; |
| } |
| |
| VarDecl *SwitchStmt::getConditionVariable() const { |
| if (!SubExprs[VAR]) |
| return 0; |
| |
| DeclStmt *DS = cast<DeclStmt>(SubExprs[VAR]); |
| return cast<VarDecl>(DS->getSingleDecl()); |
| } |
| |
| void SwitchStmt::setConditionVariable(ASTContext &C, VarDecl *V) { |
| if (!V) { |
| SubExprs[VAR] = 0; |
| return; |
| } |
| |
| SubExprs[VAR] = new (C) DeclStmt(DeclGroupRef(V), |
| V->getSourceRange().getBegin(), |
| V->getSourceRange().getEnd()); |
| } |
| |
| void SwitchStmt::DoDestroy(ASTContext &C) { |
| // Destroy the SwitchCase statements in this switch. In the normal |
| // case, this loop will merely decrement the reference counts from |
| // the Retain() calls in addSwitchCase(); |
| SwitchCase *SC = FirstCase; |
| while (SC) { |
| SwitchCase *Next = SC->getNextSwitchCase(); |
| SC->Destroy(C); |
| SC = Next; |
| } |
| |
| BranchDestroy(C, this, SubExprs, END_EXPR); |
| } |
| |
| WhileStmt::WhileStmt(ASTContext &C, VarDecl *Var, Expr *cond, Stmt *body, |
| SourceLocation WL) |
| : Stmt(WhileStmtClass) |
| { |
| setConditionVariable(C, Var); |
| SubExprs[COND] = reinterpret_cast<Stmt*>(cond); |
| SubExprs[BODY] = body; |
| WhileLoc = WL; |
| } |
| |
| VarDecl *WhileStmt::getConditionVariable() const { |
| if (!SubExprs[VAR]) |
| return 0; |
| |
| DeclStmt *DS = cast<DeclStmt>(SubExprs[VAR]); |
| return cast<VarDecl>(DS->getSingleDecl()); |
| } |
| |
| void WhileStmt::setConditionVariable(ASTContext &C, VarDecl *V) { |
| if (!V) { |
| SubExprs[VAR] = 0; |
| return; |
| } |
| |
| SubExprs[VAR] = new (C) DeclStmt(DeclGroupRef(V), |
| V->getSourceRange().getBegin(), |
| V->getSourceRange().getEnd()); |
| } |
| |
| void WhileStmt::DoDestroy(ASTContext &C) { |
| BranchDestroy(C, this, SubExprs, END_EXPR); |
| } |
| |
| void AsmStmt::DoDestroy(ASTContext &C) { |
| DestroyChildren(C); |
| |
| C.Deallocate(Names); |
| C.Deallocate(Constraints); |
| C.Deallocate(Exprs); |
| C.Deallocate(Clobbers); |
| |
| this->~AsmStmt(); |
| C.Deallocate((void *)this); |
| } |
| |
| //===----------------------------------------------------------------------===// |
| // Child Iterators for iterating over subexpressions/substatements |
| //===----------------------------------------------------------------------===// |
| |
| // DeclStmt |
| Stmt::child_iterator DeclStmt::child_begin() { |
| return StmtIterator(DG.begin(), DG.end()); |
| } |
| |
| Stmt::child_iterator DeclStmt::child_end() { |
| return StmtIterator(DG.end(), DG.end()); |
| } |
| |
| // NullStmt |
| Stmt::child_iterator NullStmt::child_begin() { return child_iterator(); } |
| Stmt::child_iterator NullStmt::child_end() { return child_iterator(); } |
| |
| // CompoundStmt |
| Stmt::child_iterator CompoundStmt::child_begin() { return &Body[0]; } |
| Stmt::child_iterator CompoundStmt::child_end() { return &Body[0]+NumStmts; } |
| |
| // CaseStmt |
| Stmt::child_iterator CaseStmt::child_begin() { return &SubExprs[0]; } |
| Stmt::child_iterator CaseStmt::child_end() { return &SubExprs[END_EXPR]; } |
| |
| // DefaultStmt |
| Stmt::child_iterator DefaultStmt::child_begin() { return &SubStmt; } |
| Stmt::child_iterator DefaultStmt::child_end() { return &SubStmt+1; } |
| |
| // LabelStmt |
| Stmt::child_iterator LabelStmt::child_begin() { return &SubStmt; } |
| Stmt::child_iterator LabelStmt::child_end() { return &SubStmt+1; } |
| |
| // IfStmt |
| Stmt::child_iterator IfStmt::child_begin() { |
| return &SubExprs[0]; |
| } |
| Stmt::child_iterator IfStmt::child_end() { |
| return &SubExprs[0]+END_EXPR; |
| } |
| |
| // SwitchStmt |
| Stmt::child_iterator SwitchStmt::child_begin() { |
| return &SubExprs[0]; |
| } |
| Stmt::child_iterator SwitchStmt::child_end() { |
| return &SubExprs[0]+END_EXPR; |
| } |
| |
| // WhileStmt |
| Stmt::child_iterator WhileStmt::child_begin() { |
| return &SubExprs[0]; |
| } |
| Stmt::child_iterator WhileStmt::child_end() { |
| return &SubExprs[0]+END_EXPR; |
| } |
| |
| // DoStmt |
| Stmt::child_iterator DoStmt::child_begin() { return &SubExprs[0]; } |
| Stmt::child_iterator DoStmt::child_end() { return &SubExprs[0]+END_EXPR; } |
| |
| // ForStmt |
| Stmt::child_iterator ForStmt::child_begin() { |
| return &SubExprs[0]; |
| } |
| Stmt::child_iterator ForStmt::child_end() { |
| return &SubExprs[0]+END_EXPR; |
| } |
| |
| // ObjCForCollectionStmt |
| Stmt::child_iterator ObjCForCollectionStmt::child_begin() { |
| return &SubExprs[0]; |
| } |
| Stmt::child_iterator ObjCForCollectionStmt::child_end() { |
| return &SubExprs[0]+END_EXPR; |
| } |
| |
| // GotoStmt |
| Stmt::child_iterator GotoStmt::child_begin() { return child_iterator(); } |
| Stmt::child_iterator GotoStmt::child_end() { return child_iterator(); } |
| |
| // IndirectGotoStmt |
| Expr* IndirectGotoStmt::getTarget() { return cast<Expr>(Target); } |
| const Expr* IndirectGotoStmt::getTarget() const { return cast<Expr>(Target); } |
| |
| Stmt::child_iterator IndirectGotoStmt::child_begin() { return &Target; } |
| Stmt::child_iterator IndirectGotoStmt::child_end() { return &Target+1; } |
| |
| // ContinueStmt |
| Stmt::child_iterator ContinueStmt::child_begin() { return child_iterator(); } |
| Stmt::child_iterator ContinueStmt::child_end() { return child_iterator(); } |
| |
| // BreakStmt |
| Stmt::child_iterator BreakStmt::child_begin() { return child_iterator(); } |
| Stmt::child_iterator BreakStmt::child_end() { return child_iterator(); } |
| |
| // ReturnStmt |
| const Expr* ReturnStmt::getRetValue() const { |
| return cast_or_null<Expr>(RetExpr); |
| } |
| Expr* ReturnStmt::getRetValue() { |
| return cast_or_null<Expr>(RetExpr); |
| } |
| |
| Stmt::child_iterator ReturnStmt::child_begin() { |
| return &RetExpr; |
| } |
| Stmt::child_iterator ReturnStmt::child_end() { |
| return RetExpr ? &RetExpr+1 : &RetExpr; |
| } |
| |
| // AsmStmt |
| Stmt::child_iterator AsmStmt::child_begin() { |
| return NumOutputs + NumInputs == 0 ? 0 : &Exprs[0]; |
| } |
| Stmt::child_iterator AsmStmt::child_end() { |
| return NumOutputs + NumInputs == 0 ? 0 : &Exprs[0] + NumOutputs + NumInputs; |
| } |
| |
| // ObjCAtCatchStmt |
| Stmt::child_iterator ObjCAtCatchStmt::child_begin() { return &Body; } |
| Stmt::child_iterator ObjCAtCatchStmt::child_end() { return &Body + 1; } |
| |
| // ObjCAtFinallyStmt |
| Stmt::child_iterator ObjCAtFinallyStmt::child_begin() { return &AtFinallyStmt; } |
| Stmt::child_iterator ObjCAtFinallyStmt::child_end() { return &AtFinallyStmt+1; } |
| |
| // ObjCAtTryStmt |
| Stmt::child_iterator ObjCAtTryStmt::child_begin() { return getStmts(); } |
| |
| Stmt::child_iterator ObjCAtTryStmt::child_end() { |
| return getStmts() + 1 + NumCatchStmts + HasFinally; |
| } |
| |
| // ObjCAtThrowStmt |
| Stmt::child_iterator ObjCAtThrowStmt::child_begin() { |
| return &Throw; |
| } |
| |
| Stmt::child_iterator ObjCAtThrowStmt::child_end() { |
| return &Throw+1; |
| } |
| |
| // ObjCAtSynchronizedStmt |
| Stmt::child_iterator ObjCAtSynchronizedStmt::child_begin() { |
| return &SubStmts[0]; |
| } |
| |
| Stmt::child_iterator ObjCAtSynchronizedStmt::child_end() { |
| return &SubStmts[0]+END_EXPR; |
| } |
| |
| // CXXCatchStmt |
| Stmt::child_iterator CXXCatchStmt::child_begin() { |
| return &HandlerBlock; |
| } |
| |
| Stmt::child_iterator CXXCatchStmt::child_end() { |
| return &HandlerBlock + 1; |
| } |
| |
| // CXXTryStmt |
| Stmt::child_iterator CXXTryStmt::child_begin() { |
| return reinterpret_cast<Stmt **>(this + 1); |
| } |
| |
| Stmt::child_iterator CXXTryStmt::child_end() { |
| return reinterpret_cast<Stmt **>(this + 1) + NumHandlers + 1; |
| } |