diff options
Diffstat (limited to 'include/clang/AST/Stmt.h')
| -rw-r--r-- | include/clang/AST/Stmt.h | 484 |
1 files changed, 267 insertions, 217 deletions
diff --git a/include/clang/AST/Stmt.h b/include/clang/AST/Stmt.h index 0a64dafd4e2c8..411f215e912e1 100644 --- a/include/clang/AST/Stmt.h +++ b/include/clang/AST/Stmt.h @@ -21,11 +21,14 @@ #include "clang/AST/StmtIterator.h" #include "clang/AST/DeclGroup.h" #include "llvm/ADT/SmallVector.h" -#include "llvm/ADT/iterator.h" #include "clang/AST/ASTContext.h" #include <string> using llvm::dyn_cast_or_null; +namespace llvm { + class FoldingSetNodeID; +} + namespace clang { class ASTContext; class Expr; @@ -36,21 +39,21 @@ namespace clang { class SourceManager; class StringLiteral; class SwitchStmt; - + //===----------------------------------------------------------------------===// // ExprIterator - Iterators for iterating over Stmt* arrays that contain // only Expr*. This is needed because AST nodes use Stmt* arrays to store // references to children (to be compatible with StmtIterator). //===----------------------------------------------------------------------===// - + class Stmt; class Expr; - + class ExprIterator { Stmt** I; public: ExprIterator(Stmt** i) : I(i) {} - ExprIterator() : I(0) {} + ExprIterator() : I(0) {} ExprIterator& operator++() { ++I; return *this; } ExprIterator operator-(size_t i) { return I-i; } ExprIterator operator+(size_t i) { return I+i; } @@ -64,12 +67,12 @@ namespace clang { bool operator>(const ExprIterator& R) const { return I > R.I; } bool operator>=(const ExprIterator& R) const { return I >= R.I; } }; - + class ConstExprIterator { Stmt* const * I; public: ConstExprIterator(Stmt* const* i) : I(i) {} - ConstExprIterator() : I(0) {} + ConstExprIterator() : I(0) {} ConstExprIterator& operator++() { ++I; return *this; } ConstExprIterator operator+(size_t i) { return I+i; } ConstExprIterator operator-(size_t i) { return I-i; } @@ -81,12 +84,12 @@ namespace clang { bool operator!=(const ConstExprIterator& R) const { return I != R.I; } bool operator>(const ConstExprIterator& R) const { return I > R.I; } bool operator>=(const ConstExprIterator& R) const { return I >= R.I; } - }; - + }; + //===----------------------------------------------------------------------===// // AST classes for statements. //===----------------------------------------------------------------------===// - + /// Stmt - This represents one statement. /// class Stmt { @@ -101,7 +104,11 @@ public: #include "clang/AST/StmtNodes.def" }; private: - const StmtClass sClass; + /// \brief The statement class. + const unsigned sClass : 8; + + /// \brief The reference count for this statement. + unsigned RefCount : 24; // Make vanilla 'new' and 'delete' illegal for Stmts. protected: @@ -112,20 +119,20 @@ protected: void operator delete(void* data) throw() { assert(0 && "Stmts cannot be released with regular 'delete'."); } - + public: // Only allow allocation of Stmts using the allocator in ASTContext - // or by doing a placement new. + // or by doing a placement new. void* operator new(size_t bytes, ASTContext& C, unsigned alignment = 16) throw() { return ::operator new(bytes, C, alignment); } - + void* operator new(size_t bytes, ASTContext* C, unsigned alignment = 16) throw() { return ::operator new(bytes, *C, alignment); } - + void* operator new(size_t bytes, void* mem) throw() { return mem; } @@ -145,23 +152,48 @@ protected: /// DestroyChildren - Invoked by destructors of subclasses of Stmt to /// recursively release child AST nodes. void DestroyChildren(ASTContext& Ctx); - + /// \brief Construct an empty statement. - explicit Stmt(StmtClass SC, EmptyShell) : sClass(SC) { + explicit Stmt(StmtClass SC, EmptyShell) : sClass(SC), RefCount(1) { if (Stmt::CollectingStats()) Stmt::addStmtClass(SC); } + /// \brief Virtual method that performs the actual destruction of + /// this statement. + /// + /// Subclasses should override this method (not Destroy()) to + /// provide class-specific destruction. + virtual void DoDestroy(ASTContext &Ctx); + public: - Stmt(StmtClass SC) : sClass(SC) { + Stmt(StmtClass SC) : sClass(SC), RefCount(1) { if (Stmt::CollectingStats()) Stmt::addStmtClass(SC); } virtual ~Stmt() {} - - virtual void Destroy(ASTContext &Ctx); - StmtClass getStmtClass() const { return sClass; } + /// \brief Destroy the current statement and its children. + void Destroy(ASTContext &Ctx) { + assert(RefCount >= 1); + if (--RefCount == 0) + DoDestroy(Ctx); + } + + /// \brief Increases the reference count for this statement. + /// + /// Invoke the Retain() operation when this statement or expression + /// is being shared by another owner. + Stmt *Retain() { + assert(RefCount >= 1); + ++RefCount; + return this; + } + + StmtClass getStmtClass() const { + assert(RefCount >= 1 && "Referencing already-destroyed statement!"); + return (StmtClass)sClass; + } const char *getStmtClassName() const; - + /// SourceLocation tokens are not useful in isolation - they are low level /// value objects created/interpreted by SourceManager. We assume AST /// clients will have a pointer to the respective SourceManager. @@ -187,23 +219,23 @@ public: /// dumpPretty/printPretty - These two methods do a "pretty print" of the AST /// back to its original source language syntax. void dumpPretty(ASTContext& Context) const; - void printPretty(llvm::raw_ostream &OS, PrinterHelper *Helper, + void printPretty(llvm::raw_ostream &OS, PrinterHelper *Helper, const PrintingPolicy &Policy, unsigned Indentation = 0) const { printPretty(OS, *(ASTContext*)0, Helper, Policy, Indentation); } void printPretty(llvm::raw_ostream &OS, ASTContext &Context, - PrinterHelper *Helper, + PrinterHelper *Helper, const PrintingPolicy &Policy, unsigned Indentation = 0) const; - + /// viewAST - Visualize an AST rooted at this Stmt* using GraphViz. Only /// works on systems with GraphViz (Mac OS X) or dot+gv installed. void viewAST() const; - + // Implement isa<T> support. - static bool classof(const Stmt *) { return true; } - + static bool classof(const Stmt *) { return true; } + /// hasImplicitControlFlow - Some statements (e.g. short circuited operations) /// contain implicit control-flow in the order their subexpressions /// are evaluated. This predicate returns true if this statement has @@ -216,46 +248,60 @@ public: /// AST node. This permits easy iteration over all nodes in the AST. typedef StmtIterator child_iterator; typedef ConstStmtIterator const_child_iterator; - + virtual child_iterator child_begin() = 0; virtual child_iterator child_end() = 0; - + const_child_iterator child_begin() const { return const_child_iterator(const_cast<Stmt*>(this)->child_begin()); } - + const_child_iterator child_end() const { return const_child_iterator(const_cast<Stmt*>(this)->child_end()); } + + /// \brief Produce a unique representation of the given statement. + /// + /// \brief ID once the profiling operation is complete, will contain + /// the unique representation of the given statement. + /// + /// \brief Context the AST context in which the statement resides + /// + /// \brief Canonical whether the profile should be based on the canonical + /// representation of this statement (e.g., where non-type template + /// parameters are identified by index/level rather than their + /// declaration pointers) or the exact representation of the statement as + /// written in the source. + void Profile(llvm::FoldingSetNodeID &ID, ASTContext &Context, + bool Canonical); }; /// DeclStmt - Adaptor class for mixing declarations with statements and /// expressions. For example, CompoundStmt mixes statements, expressions -/// and declarations (variables, types). Another example is ForStmt, where +/// and declarations (variables, types). Another example is ForStmt, where /// the first statement can be an expression or a declaration. /// class DeclStmt : public Stmt { DeclGroupRef DG; SourceLocation StartLoc, EndLoc; + public: - DeclStmt(DeclGroupRef dg, SourceLocation startLoc, + DeclStmt(DeclGroupRef dg, SourceLocation startLoc, SourceLocation endLoc) : Stmt(DeclStmtClass), DG(dg), StartLoc(startLoc), EndLoc(endLoc) {} - + /// \brief Build an empty declaration statement. explicit DeclStmt(EmptyShell Empty) : Stmt(DeclStmtClass, Empty) { } - virtual void Destroy(ASTContext& Ctx); - /// isSingleDecl - This method returns true if this DeclStmt refers /// to a single Decl. bool isSingleDecl() const { return DG.isSingleDecl(); } - + const Decl *getSingleDecl() const { return DG.getSingleDecl(); } - Decl *getSingleDecl() { return DG.getSingleDecl(); } - + Decl *getSingleDecl() { return DG.getSingleDecl(); } + const DeclGroupRef getDeclGroup() const { return DG; } DeclGroupRef getDeclGroup() { return DG; } void setDeclGroup(DeclGroupRef DGR) { DG = DGR; } @@ -268,19 +314,19 @@ public: SourceRange getSourceRange() const { return SourceRange(StartLoc, EndLoc); } - - static bool classof(const Stmt *T) { - return T->getStmtClass() == DeclStmtClass; + + static bool classof(const Stmt *T) { + return T->getStmtClass() == DeclStmtClass; } static bool classof(const DeclStmt *) { return true; } - + // Iterators over subexpressions. virtual child_iterator child_begin(); virtual child_iterator child_end(); - + typedef DeclGroupRef::iterator decl_iterator; typedef DeclGroupRef::const_iterator const_decl_iterator; - + decl_iterator decl_begin() { return DG.begin(); } decl_iterator decl_end() { return DG.end(); } const_decl_iterator decl_begin() const { return DG.begin(); } @@ -297,18 +343,16 @@ public: /// \brief Build an empty null statement. explicit NullStmt(EmptyShell Empty) : Stmt(NullStmtClass, Empty) { } - NullStmt* Clone(ASTContext &C) const; - SourceLocation getSemiLoc() const { return SemiLoc; } void setSemiLoc(SourceLocation L) { SemiLoc = L; } virtual SourceRange getSourceRange() const { return SourceRange(SemiLoc); } - - static bool classof(const Stmt *T) { - return T->getStmtClass() == NullStmtClass; + + static bool classof(const Stmt *T) { + return T->getStmtClass() == NullStmtClass; } static bool classof(const NullStmt *) { return true; } - + // Iterators virtual child_iterator child_begin(); virtual child_iterator child_end(); @@ -321,24 +365,24 @@ class CompoundStmt : public Stmt { unsigned NumStmts; SourceLocation LBracLoc, RBracLoc; public: - CompoundStmt(ASTContext& C, Stmt **StmtStart, unsigned numStmts, + CompoundStmt(ASTContext& C, Stmt **StmtStart, unsigned numStmts, SourceLocation LB, SourceLocation RB) : Stmt(CompoundStmtClass), NumStmts(numStmts), LBracLoc(LB), RBracLoc(RB) { if (NumStmts == 0) { Body = 0; return; } - + Body = new (C) Stmt*[NumStmts]; memcpy(Body, StmtStart, numStmts * sizeof(*Body)); - } + } // \brief Build an empty compound statement. explicit CompoundStmt(EmptyShell Empty) : Stmt(CompoundStmtClass, Empty), Body(0), NumStmts(0) { } void setStmts(ASTContext &C, Stmt **Stmts, unsigned NumStmts); - + bool body_empty() const { return NumStmts == 0; } unsigned size() const { return NumStmts; } @@ -366,25 +410,25 @@ public: const_reverse_body_iterator body_rbegin() const { return const_reverse_body_iterator(body_end()); } - + const_reverse_body_iterator body_rend() const { return const_reverse_body_iterator(body_begin()); } - - virtual SourceRange getSourceRange() const { - return SourceRange(LBracLoc, RBracLoc); + + virtual SourceRange getSourceRange() const { + return SourceRange(LBracLoc, RBracLoc); } - + SourceLocation getLBracLoc() const { return LBracLoc; } void setLBracLoc(SourceLocation L) { LBracLoc = L; } SourceLocation getRBracLoc() const { return RBracLoc; } void setRBracLoc(SourceLocation L) { RBracLoc = L; } - - static bool classof(const Stmt *T) { - return T->getStmtClass() == CompoundStmtClass; + + static bool classof(const Stmt *T) { + return T->getStmtClass() == CompoundStmtClass; } static bool classof(const CompoundStmt *) { return true; } - + // Iterators virtual child_iterator child_begin(); virtual child_iterator child_end(); @@ -398,7 +442,7 @@ protected: SwitchCase *NextSwitchCase; SwitchCase(StmtClass SC) : Stmt(SC), NextSwitchCase(0) {} - + public: const SwitchCase *getNextSwitchCase() const { return NextSwitchCase; } @@ -409,19 +453,19 @@ public: Stmt *getSubStmt() { return v_getSubStmt(); } virtual SourceRange getSourceRange() const { return SourceRange(); } - - static bool classof(const Stmt *T) { - return T->getStmtClass() == CaseStmtClass || + + static bool classof(const Stmt *T) { + return T->getStmtClass() == CaseStmtClass || T->getStmtClass() == DefaultStmtClass; } static bool classof(const SwitchCase *) { return true; } protected: - virtual Stmt* v_getSubStmt() = 0; + virtual Stmt* v_getSubStmt() = 0; }; class CaseStmt : public SwitchCase { enum { SUBSTMT, LHS, RHS, END_EXPR }; - Stmt* SubExprs[END_EXPR]; // The expression for the RHS is Non-null for + Stmt* SubExprs[END_EXPR]; // The expression for the RHS is Non-null for // GNU "case 1 ... 4" extension SourceLocation CaseLoc; SourceLocation EllipsisLoc; @@ -430,7 +474,7 @@ class CaseStmt : public SwitchCase { virtual Stmt* v_getSubStmt() { return getSubStmt(); } public: CaseStmt(Expr *lhs, Expr *rhs, SourceLocation caseLoc, - SourceLocation ellipsisLoc, SourceLocation colonLoc) + SourceLocation ellipsisLoc, SourceLocation colonLoc) : SwitchCase(CaseStmtClass) { SubExprs[SUBSTMT] = 0; SubExprs[LHS] = reinterpret_cast<Stmt*>(lhs); @@ -454,32 +498,32 @@ public: Expr *getRHS() { return reinterpret_cast<Expr*>(SubExprs[RHS]); } Stmt *getSubStmt() { return SubExprs[SUBSTMT]; } - const Expr *getLHS() const { - return reinterpret_cast<const Expr*>(SubExprs[LHS]); + const Expr *getLHS() const { + return reinterpret_cast<const Expr*>(SubExprs[LHS]); } - const Expr *getRHS() const { - return reinterpret_cast<const Expr*>(SubExprs[RHS]); + const Expr *getRHS() const { + return reinterpret_cast<const Expr*>(SubExprs[RHS]); } const Stmt *getSubStmt() const { return SubExprs[SUBSTMT]; } void setSubStmt(Stmt *S) { SubExprs[SUBSTMT] = S; } void setLHS(Expr *Val) { SubExprs[LHS] = reinterpret_cast<Stmt*>(Val); } void setRHS(Expr *Val) { SubExprs[RHS] = reinterpret_cast<Stmt*>(Val); } - - + + virtual SourceRange getSourceRange() const { // Handle deeply nested case statements with iteration instead of recursion. const CaseStmt *CS = this; while (const CaseStmt *CS2 = dyn_cast<CaseStmt>(CS->getSubStmt())) CS = CS2; - - return SourceRange(CaseLoc, CS->getSubStmt()->getLocEnd()); + + return SourceRange(CaseLoc, CS->getSubStmt()->getLocEnd()); } - static bool classof(const Stmt *T) { - return T->getStmtClass() == CaseStmtClass; + static bool classof(const Stmt *T) { + return T->getStmtClass() == CaseStmtClass; } static bool classof(const CaseStmt *) { return true; } - + // Iterators virtual child_iterator child_begin(); virtual child_iterator child_end(); @@ -491,7 +535,7 @@ class DefaultStmt : public SwitchCase { SourceLocation ColonLoc; virtual Stmt* v_getSubStmt() { return getSubStmt(); } public: - DefaultStmt(SourceLocation DL, SourceLocation CL, Stmt *substmt) : + DefaultStmt(SourceLocation DL, SourceLocation CL, Stmt *substmt) : SwitchCase(DefaultStmtClass), SubStmt(substmt), DefaultLoc(DL), ColonLoc(CL) {} @@ -507,14 +551,14 @@ public: SourceLocation getColonLoc() const { return ColonLoc; } void setColonLoc(SourceLocation L) { ColonLoc = L; } - virtual SourceRange getSourceRange() const { - return SourceRange(DefaultLoc, SubStmt->getLocEnd()); + virtual SourceRange getSourceRange() const { + return SourceRange(DefaultLoc, SubStmt->getLocEnd()); } - static bool classof(const Stmt *T) { - return T->getStmtClass() == DefaultStmtClass; + static bool classof(const Stmt *T) { + return T->getStmtClass() == DefaultStmtClass; } static bool classof(const DefaultStmt *) { return true; } - + // Iterators virtual child_iterator child_begin(); virtual child_iterator child_end(); @@ -525,13 +569,13 @@ class LabelStmt : public Stmt { Stmt *SubStmt; SourceLocation IdentLoc; public: - LabelStmt(SourceLocation IL, IdentifierInfo *label, Stmt *substmt) - : Stmt(LabelStmtClass), Label(label), + LabelStmt(SourceLocation IL, IdentifierInfo *label, Stmt *substmt) + : Stmt(LabelStmtClass), Label(label), SubStmt(substmt), IdentLoc(IL) {} // \brief Build an empty label statement. explicit LabelStmt(EmptyShell Empty) : Stmt(LabelStmtClass, Empty) { } - + SourceLocation getIdentLoc() const { return IdentLoc; } IdentifierInfo *getID() const { return Label; } void setID(IdentifierInfo *II) { Label = II; } @@ -541,14 +585,14 @@ public: void setIdentLoc(SourceLocation L) { IdentLoc = L; } void setSubStmt(Stmt *SS) { SubStmt = SS; } - virtual SourceRange getSourceRange() const { - return SourceRange(IdentLoc, SubStmt->getLocEnd()); - } - static bool classof(const Stmt *T) { - return T->getStmtClass() == LabelStmtClass; + virtual SourceRange getSourceRange() const { + return SourceRange(IdentLoc, SubStmt->getLocEnd()); + } + static bool classof(const Stmt *T) { + return T->getStmtClass() == LabelStmtClass; } static bool classof(const LabelStmt *) { return true; } - + // Iterators virtual child_iterator child_begin(); virtual child_iterator child_end(); @@ -563,8 +607,8 @@ class IfStmt : public Stmt { SourceLocation IfLoc; SourceLocation ElseLoc; public: - IfStmt(SourceLocation IL, Expr *cond, Stmt *then, - SourceLocation EL = SourceLocation(), Stmt *elsev = 0) + IfStmt(SourceLocation IL, Expr *cond, Stmt *then, + SourceLocation EL = SourceLocation(), Stmt *elsev = 0) : Stmt(IfStmtClass) { SubExprs[COND] = reinterpret_cast<Stmt*>(cond); SubExprs[THEN] = then; @@ -572,14 +616,14 @@ public: IfLoc = IL; ElseLoc = EL; } - + /// \brief Build an empty if/then/else statement explicit IfStmt(EmptyShell Empty) : Stmt(IfStmtClass, Empty) { } const Expr *getCond() const { return reinterpret_cast<Expr*>(SubExprs[COND]);} void setCond(Expr *E) { SubExprs[COND] = reinterpret_cast<Stmt *>(E); } const Stmt *getThen() const { return SubExprs[THEN]; } - void setThen(Stmt *S) { SubExprs[THEN] = S; } + void setThen(Stmt *S) { SubExprs[THEN] = S; } const Stmt *getElse() const { return SubExprs[ELSE]; } void setElse(Stmt *S) { SubExprs[ELSE] = S; } @@ -592,18 +636,18 @@ public: SourceLocation getElseLoc() const { return ElseLoc; } void setElseLoc(SourceLocation L) { ElseLoc = L; } - virtual SourceRange getSourceRange() const { + virtual SourceRange getSourceRange() const { if (SubExprs[ELSE]) return SourceRange(IfLoc, SubExprs[ELSE]->getLocEnd()); else return SourceRange(IfLoc, SubExprs[THEN]->getLocEnd()); } - - static bool classof(const Stmt *T) { - return T->getStmtClass() == IfStmtClass; + + static bool classof(const Stmt *T) { + return T->getStmtClass() == IfStmtClass; } static bool classof(const IfStmt *) { return true; } - + // Iterators virtual child_iterator child_begin(); virtual child_iterator child_end(); @@ -613,16 +657,20 @@ public: /// class SwitchStmt : public Stmt { enum { COND, BODY, END_EXPR }; - Stmt* SubExprs[END_EXPR]; + Stmt* SubExprs[END_EXPR]; // This points to a linked list of case and default statements. SwitchCase *FirstCase; SourceLocation SwitchLoc; + +protected: + virtual void DoDestroy(ASTContext &Ctx); + public: SwitchStmt(Expr *cond) : Stmt(SwitchStmtClass), FirstCase(0) { SubExprs[COND] = reinterpret_cast<Stmt*>(cond); SubExprs[BODY] = NULL; } - + /// \brief Build a empty switch statement. explicit SwitchStmt(EmptyShell Empty) : Stmt(SwitchStmtClass, Empty) { } @@ -635,28 +683,34 @@ public: Stmt *getBody() { return SubExprs[BODY]; } void setBody(Stmt *S) { SubExprs[BODY] = S; } SwitchCase *getSwitchCaseList() { return FirstCase; } + + /// \brief Set the case list for this switch statement. + /// + /// The caller is responsible for incrementing the retain counts on + /// all of the SwitchCase statements in this list. void setSwitchCaseList(SwitchCase *SC) { FirstCase = SC; } SourceLocation getSwitchLoc() const { return SwitchLoc; } void setSwitchLoc(SourceLocation L) { SwitchLoc = L; } - void setBody(Stmt *S, SourceLocation SL) { - SubExprs[BODY] = S; + void setBody(Stmt *S, SourceLocation SL) { + SubExprs[BODY] = S; SwitchLoc = SL; - } + } void addSwitchCase(SwitchCase *SC) { assert(!SC->getNextSwitchCase() && "case/default already added to a switch"); + SC->Retain(); SC->setNextSwitchCase(FirstCase); FirstCase = SC; } - virtual SourceRange getSourceRange() const { - return SourceRange(SwitchLoc, SubExprs[BODY]->getLocEnd()); + virtual SourceRange getSourceRange() const { + return SourceRange(SwitchLoc, SubExprs[BODY]->getLocEnd()); } - static bool classof(const Stmt *T) { - return T->getStmtClass() == SwitchStmtClass; + static bool classof(const Stmt *T) { + return T->getStmtClass() == SwitchStmtClass; } static bool classof(const SwitchStmt *) { return true; } - + // Iterators virtual child_iterator child_begin(); virtual child_iterator child_end(); @@ -675,7 +729,7 @@ public: SubExprs[BODY] = body; WhileLoc = WL; } - + /// \brief Build an empty while statement. explicit WhileStmt(EmptyShell Empty) : Stmt(WhileStmtClass, Empty) { } @@ -689,14 +743,14 @@ public: SourceLocation getWhileLoc() const { return WhileLoc; } void setWhileLoc(SourceLocation L) { WhileLoc = L; } - virtual SourceRange getSourceRange() const { - return SourceRange(WhileLoc, SubExprs[BODY]->getLocEnd()); + virtual SourceRange getSourceRange() const { + return SourceRange(WhileLoc, SubExprs[BODY]->getLocEnd()); } - static bool classof(const Stmt *T) { - return T->getStmtClass() == WhileStmtClass; + static bool classof(const Stmt *T) { + return T->getStmtClass() == WhileStmtClass; } static bool classof(const WhileStmt *) { return true; } - + // Iterators virtual child_iterator child_begin(); virtual child_iterator child_end(); @@ -717,16 +771,16 @@ public: : Stmt(DoStmtClass), DoLoc(DL), WhileLoc(WL), RParenLoc(RP) { SubExprs[COND] = reinterpret_cast<Stmt*>(cond); SubExprs[BODY] = body; - } + } /// \brief Build an empty do-while statement. explicit DoStmt(EmptyShell Empty) : Stmt(DoStmtClass, Empty) { } - + Expr *getCond() { return reinterpret_cast<Expr*>(SubExprs[COND]); } const Expr *getCond() const { return reinterpret_cast<Expr*>(SubExprs[COND]);} void setCond(Expr *E) { SubExprs[COND] = reinterpret_cast<Stmt*>(E); } Stmt *getBody() { return SubExprs[BODY]; } - const Stmt *getBody() const { return SubExprs[BODY]; } + const Stmt *getBody() const { return SubExprs[BODY]; } void setBody(Stmt *S) { SubExprs[BODY] = S; } SourceLocation getDoLoc() const { return DoLoc; } @@ -737,11 +791,11 @@ public: SourceLocation getRParenLoc() const { return RParenLoc; } void setRParenLoc(SourceLocation L) { RParenLoc = L; } - virtual SourceRange getSourceRange() const { - return SourceRange(DoLoc, RParenLoc); + virtual SourceRange getSourceRange() const { + return SourceRange(DoLoc, RParenLoc); } - static bool classof(const Stmt *T) { - return T->getStmtClass() == DoStmtClass; + static bool classof(const Stmt *T) { + return T->getStmtClass() == DoStmtClass; } static bool classof(const DoStmt *) { return true; } @@ -763,7 +817,7 @@ class ForStmt : public Stmt { public: ForStmt(Stmt *Init, Expr *Cond, Expr *Inc, Stmt *Body, SourceLocation FL, - SourceLocation LP, SourceLocation RP) + SourceLocation LP, SourceLocation RP) : Stmt(ForStmtClass) { SubExprs[INIT] = Init; SubExprs[COND] = reinterpret_cast<Stmt*>(Cond); @@ -773,7 +827,7 @@ public: LParenLoc = LP; RParenLoc = RP; } - + /// \brief Build an empty for statement. explicit ForStmt(EmptyShell Empty) : Stmt(ForStmtClass, Empty) { } @@ -799,19 +853,19 @@ public: SourceLocation getRParenLoc() const { return RParenLoc; } void setRParenLoc(SourceLocation L) { RParenLoc = L; } - virtual SourceRange getSourceRange() const { - return SourceRange(ForLoc, SubExprs[BODY]->getLocEnd()); + virtual SourceRange getSourceRange() const { + return SourceRange(ForLoc, SubExprs[BODY]->getLocEnd()); } - static bool classof(const Stmt *T) { - return T->getStmtClass() == ForStmtClass; + static bool classof(const Stmt *T) { + return T->getStmtClass() == ForStmtClass; } static bool classof(const ForStmt *) { return true; } - + // Iterators virtual child_iterator child_begin(); virtual child_iterator child_end(); }; - + /// GotoStmt - This represents a direct goto. /// class GotoStmt : public Stmt { @@ -819,9 +873,9 @@ class GotoStmt : public Stmt { SourceLocation GotoLoc; SourceLocation LabelLoc; public: - GotoStmt(LabelStmt *label, SourceLocation GL, SourceLocation LL) + GotoStmt(LabelStmt *label, SourceLocation GL, SourceLocation LL) : Stmt(GotoStmtClass), Label(label), GotoLoc(GL), LabelLoc(LL) {} - + /// \brief Build an empty goto statement. explicit GotoStmt(EmptyShell Empty) : Stmt(GotoStmtClass, Empty) { } @@ -833,14 +887,14 @@ public: SourceLocation getLabelLoc() const { return LabelLoc; } void setLabelLoc(SourceLocation L) { LabelLoc = L; } - virtual SourceRange getSourceRange() const { - return SourceRange(GotoLoc, LabelLoc); + virtual SourceRange getSourceRange() const { + return SourceRange(GotoLoc, LabelLoc); } - static bool classof(const Stmt *T) { - return T->getStmtClass() == GotoStmtClass; + static bool classof(const Stmt *T) { + return T->getStmtClass() == GotoStmtClass; } static bool classof(const GotoStmt *) { return true; } - + // Iterators virtual child_iterator child_begin(); virtual child_iterator child_end(); @@ -853,20 +907,20 @@ class IndirectGotoStmt : public Stmt { SourceLocation StarLoc; Stmt *Target; public: - IndirectGotoStmt(SourceLocation gotoLoc, SourceLocation starLoc, + IndirectGotoStmt(SourceLocation gotoLoc, SourceLocation starLoc, Expr *target) : Stmt(IndirectGotoStmtClass), GotoLoc(gotoLoc), StarLoc(starLoc), Target((Stmt*)target) {} /// \brief Build an empty indirect goto statement. - explicit IndirectGotoStmt(EmptyShell Empty) + explicit IndirectGotoStmt(EmptyShell Empty) : Stmt(IndirectGotoStmtClass, Empty) { } - + void setGotoLoc(SourceLocation L) { GotoLoc = L; } SourceLocation getGotoLoc() const { return GotoLoc; } void setStarLoc(SourceLocation L) { StarLoc = L; } SourceLocation getStarLoc() const { return StarLoc; } - + Expr *getTarget(); const Expr *getTarget() const; void setTarget(Expr *E) { Target = reinterpret_cast<Stmt*>(E); } @@ -874,12 +928,12 @@ public: virtual SourceRange getSourceRange() const { return SourceRange(GotoLoc, Target->getLocEnd()); } - - static bool classof(const Stmt *T) { - return T->getStmtClass() == IndirectGotoStmtClass; + + static bool classof(const Stmt *T) { + return T->getStmtClass() == IndirectGotoStmtClass; } static bool classof(const IndirectGotoStmt *) { return true; } - + // Iterators virtual child_iterator child_begin(); virtual child_iterator child_end(); @@ -892,24 +946,22 @@ class ContinueStmt : public Stmt { SourceLocation ContinueLoc; public: ContinueStmt(SourceLocation CL) : Stmt(ContinueStmtClass), ContinueLoc(CL) {} - + /// \brief Build an empty continue statement. explicit ContinueStmt(EmptyShell Empty) : Stmt(ContinueStmtClass, Empty) { } SourceLocation getContinueLoc() const { return ContinueLoc; } void setContinueLoc(SourceLocation L) { ContinueLoc = L; } - virtual SourceRange getSourceRange() const { - return SourceRange(ContinueLoc); + virtual SourceRange getSourceRange() const { + return SourceRange(ContinueLoc); } - ContinueStmt* Clone(ASTContext &C) const; - - static bool classof(const Stmt *T) { - return T->getStmtClass() == ContinueStmtClass; + static bool classof(const Stmt *T) { + return T->getStmtClass() == ContinueStmtClass; } static bool classof(const ContinueStmt *) { return true; } - + // Iterators virtual child_iterator child_begin(); virtual child_iterator child_end(); @@ -921,7 +973,7 @@ class BreakStmt : public Stmt { SourceLocation BreakLoc; public: BreakStmt(SourceLocation BL) : Stmt(BreakStmtClass), BreakLoc(BL) {} - + /// \brief Build an empty break statement. explicit BreakStmt(EmptyShell Empty) : Stmt(BreakStmtClass, Empty) { } @@ -930,13 +982,11 @@ public: virtual SourceRange getSourceRange() const { return SourceRange(BreakLoc); } - BreakStmt* Clone(ASTContext &C) const; - - static bool classof(const Stmt *T) { - return T->getStmtClass() == BreakStmtClass; + static bool classof(const Stmt *T) { + return T->getStmtClass() == BreakStmtClass; } static bool classof(const BreakStmt *) { return true; } - + // Iterators virtual child_iterator child_begin(); virtual child_iterator child_end(); @@ -956,7 +1006,7 @@ class ReturnStmt : public Stmt { Stmt *RetExpr; SourceLocation RetLoc; public: - ReturnStmt(SourceLocation RL, Expr *E = 0) : Stmt(ReturnStmtClass), + ReturnStmt(SourceLocation RL, Expr *E = 0) : Stmt(ReturnStmtClass), RetExpr((Stmt*) E), RetLoc(RL) {} /// \brief Build an empty return expression. @@ -970,12 +1020,12 @@ public: void setReturnLoc(SourceLocation L) { RetLoc = L; } virtual SourceRange getSourceRange() const; - - static bool classof(const Stmt *T) { - return T->getStmtClass() == ReturnStmtClass; + + static bool classof(const Stmt *T) { + return T->getStmtClass() == ReturnStmtClass; } static bool classof(const ReturnStmt *) { return true; } - + // Iterators virtual child_iterator child_begin(); virtual child_iterator child_end(); @@ -989,18 +1039,18 @@ class AsmStmt : public Stmt { bool IsSimple; bool IsVolatile; - + unsigned NumOutputs; unsigned NumInputs; - + llvm::SmallVector<std::string, 4> Names; llvm::SmallVector<StringLiteral*, 4> Constraints; llvm::SmallVector<Stmt*, 4> Exprs; llvm::SmallVector<StringLiteral*, 4> Clobbers; public: - AsmStmt(SourceLocation asmloc, bool issimple, bool isvolatile, - unsigned numoutputs, unsigned numinputs, + AsmStmt(SourceLocation asmloc, bool issimple, bool isvolatile, + unsigned numoutputs, unsigned numinputs, std::string *names, StringLiteral **constraints, Expr **exprs, StringLiteral *asmstr, unsigned numclobbers, StringLiteral **clobbers, SourceLocation rparenloc); @@ -1043,10 +1093,10 @@ public: : MyKind(Operand), Str(), OperandNo(OpNo) { Str += Modifier; } - + bool isString() const { return MyKind == String; } bool isOperand() const { return MyKind == Operand; } - + const std::string &getString() const { assert(isString()); return Str; @@ -1056,7 +1106,7 @@ public: assert(isOperand()); return OperandNo; } - + /// getModifier - Get the modifier for this operand, if present. This /// returns '\0' if there was no modifier. char getModifier() const { @@ -1064,16 +1114,16 @@ public: return Str[0]; } }; - + /// 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. This handles canonicalization and /// translation of strings from GCC syntax to LLVM IR syntax, and handles - //// flattening of named references like %[foo] to Operand AsmStringPiece's. + //// flattening of named references like %[foo] to Operand AsmStringPiece's. unsigned AnalyzeAsmString(llvm::SmallVectorImpl<AsmStringPiece> &Pieces, ASTContext &C, unsigned &DiagOffs) const; - - + + //===--- Output operands ---===// unsigned getNumOutputs() const { return NumOutputs; } @@ -1086,72 +1136,72 @@ public: /// output operand. All output constraints are known to be non-empty (either /// '=' or '+'). std::string getOutputConstraint(unsigned i) const; - + const StringLiteral *getOutputConstraintLiteral(unsigned i) const { return Constraints[i]; } StringLiteral *getOutputConstraintLiteral(unsigned i) { return Constraints[i]; } - - + + Expr *getOutputExpr(unsigned i); - + const Expr *getOutputExpr(unsigned i) const { return const_cast<AsmStmt*>(this)->getOutputExpr(i); } - + /// isOutputPlusConstraint - Return true if the specified output constraint /// is a "+" constraint (which is both an input and an output) or false if it /// is an "=" constraint (just an output). bool isOutputPlusConstraint(unsigned i) const { return getOutputConstraint(i)[0] == '+'; } - + /// getNumPlusOperands - Return the number of output operands that have a "+" /// constraint. unsigned getNumPlusOperands() const; - + //===--- Input operands ---===// - - unsigned getNumInputs() const { return NumInputs; } - + + unsigned getNumInputs() const { return NumInputs; } + const std::string &getInputName(unsigned i) const { return Names[i + NumOutputs]; } - + /// getInputConstraint - Return the specified input constraint. Unlike output /// constraints, these can be empty. std::string getInputConstraint(unsigned i) const; - + const StringLiteral *getInputConstraintLiteral(unsigned i) const { return Constraints[i + NumOutputs]; } StringLiteral *getInputConstraintLiteral(unsigned i) { return Constraints[i + NumOutputs]; } - - + + Expr *getInputExpr(unsigned i); - + const Expr *getInputExpr(unsigned i) const { return const_cast<AsmStmt*>(this)->getInputExpr(i); } void setOutputsAndInputs(unsigned NumOutputs, - unsigned NumInputs, + unsigned NumInputs, const std::string *Names, StringLiteral **Constraints, Stmt **Exprs); //===--- Other ---===// - + /// 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 getNamedOperand(const std::string &SymbolicName) const; - + unsigned getNumClobbers() const { return Clobbers.size(); } StringLiteral *getClobber(unsigned i) { return Clobbers[i]; } @@ -1161,62 +1211,62 @@ public: virtual SourceRange getSourceRange() const { return SourceRange(AsmLoc, RParenLoc); } - + static bool classof(const Stmt *T) {return T->getStmtClass() == AsmStmtClass;} static bool classof(const AsmStmt *) { return true; } - + // Input expr iterators. - + typedef ExprIterator inputs_iterator; typedef ConstExprIterator const_inputs_iterator; - + inputs_iterator begin_inputs() { return Exprs.data() + NumOutputs; } - + inputs_iterator end_inputs() { return Exprs.data() + NumOutputs + NumInputs; } - + const_inputs_iterator begin_inputs() const { return Exprs.data() + NumOutputs; } - + const_inputs_iterator end_inputs() const { return Exprs.data() + NumOutputs + NumInputs; } - + // Output expr iterators. - + typedef ExprIterator outputs_iterator; typedef ConstExprIterator const_outputs_iterator; - + outputs_iterator begin_outputs() { return Exprs.data(); } outputs_iterator end_outputs() { return Exprs.data() + NumOutputs; } - + const_outputs_iterator begin_outputs() const { return Exprs.data(); } const_outputs_iterator end_outputs() const { return Exprs.data() + NumOutputs; } - + // Input name iterator. - + const std::string *begin_output_names() const { return &Names[0]; } - + const std::string *end_output_names() const { return &Names[0] + NumOutputs; } - - // Child iterators - + + // Child iterators + virtual child_iterator child_begin(); virtual child_iterator child_end(); }; |