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Diffstat (limited to 'include/clang/Analysis/PathSensitive/GRState.h')
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1 files changed, 820 insertions, 0 deletions
diff --git a/include/clang/Analysis/PathSensitive/GRState.h b/include/clang/Analysis/PathSensitive/GRState.h new file mode 100644 index 000000000000..d61feea4819e --- /dev/null +++ b/include/clang/Analysis/PathSensitive/GRState.h @@ -0,0 +1,820 @@ +//== GRState*h - Path-Sens. "State" for tracking valuues -----*- C++ -*--==// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// This file defines SymbolRef, ExprBindKey, and GRState* +// +//===----------------------------------------------------------------------===// + +#ifndef LLVM_CLANG_ANALYSIS_VALUESTATE_H +#define LLVM_CLANG_ANALYSIS_VALUESTATE_H + +// FIXME: Reduce the number of includes. + +#include "clang/Analysis/PathSensitive/Environment.h" +#include "clang/Analysis/PathSensitive/Store.h" +#include "clang/Analysis/PathSensitive/ConstraintManager.h" +#include "clang/Analysis/PathSensitive/ValueManager.h" +#include "clang/Analysis/PathSensitive/GRCoreEngine.h" +#include "clang/AST/Expr.h" +#include "clang/AST/Decl.h" +#include "clang/AST/ASTContext.h" +#include "clang/Analysis/Analyses/LiveVariables.h" +#include "llvm/Support/Casting.h" +#include "llvm/Support/DataTypes.h" +#include "llvm/ADT/APSInt.h" +#include "llvm/ADT/FoldingSet.h" +#include "llvm/ADT/ImmutableMap.h" +#include "llvm/ADT/SmallVector.h" +#include "llvm/ADT/DenseSet.h" +#include "llvm/Support/Allocator.h" +#include "llvm/Support/Compiler.h" +#include "llvm/Support/Streams.h" + +#include <functional> + +namespace clang { + +class GRStateManager; +class GRTransferFuncs; + +typedef ConstraintManager* (*ConstraintManagerCreator)(GRStateManager&); +typedef StoreManager* (*StoreManagerCreator)(GRStateManager&); + +//===----------------------------------------------------------------------===// +// GRStateTrait - Traits used by the Generic Data Map of a GRState. +//===----------------------------------------------------------------------===// + +template <typename T> struct GRStatePartialTrait; + +template <typename T> struct GRStateTrait { + typedef typename T::data_type data_type; + static inline void* GDMIndex() { return &T::TagInt; } + static inline void* MakeVoidPtr(data_type D) { return (void*) D; } + static inline data_type MakeData(void* const* P) { + return P ? (data_type) *P : (data_type) 0; + } +}; + +//===----------------------------------------------------------------------===// +// GRState- An ImmutableMap type Stmt*/Decl*/Symbols to SVals. +//===----------------------------------------------------------------------===// + +/// GRState - This class encapsulates the actual data values for +/// for a "state" in our symbolic value tracking. It is intended to be +/// used as a functional object; that is once it is created and made +/// "persistent" in a FoldingSet its values will never change. +class GRState : public llvm::FoldingSetNode { +public: + // Typedefs. + typedef llvm::ImmutableSet<llvm::APSInt*> IntSetTy; + typedef llvm::ImmutableMap<void*, void*> GenericDataMap; + + typedef GRStateManager ManagerTy; + +private: + void operator=(const GRState& R) const; + + friend class GRStateManager; + + Environment Env; + Store St; + + // FIXME: Make these private. +public: + GenericDataMap GDM; + +public: + + /// This ctor is used when creating the first GRState object. + GRState(const Environment& env, Store st, GenericDataMap gdm) + : Env(env), + St(st), + GDM(gdm) {} + + /// Copy ctor - We must explicitly define this or else the "Next" ptr + /// in FoldingSetNode will also get copied. + GRState(const GRState& RHS) + : llvm::FoldingSetNode(), + Env(RHS.Env), + St(RHS.St), + GDM(RHS.GDM) {} + + /// getEnvironment - Return the environment associated with this state. + /// The environment is the mapping from expressions to values. + const Environment& getEnvironment() const { return Env; } + + /// getStore - Return the store associated with this state. The store + /// is a mapping from locations to values. + Store getStore() const { return St; } + + /// getGDM - Return the generic data map associated with this state. + GenericDataMap getGDM() const { return GDM; } + + /// Profile - Profile the contents of a GRState object for use + /// in a FoldingSet. + static void Profile(llvm::FoldingSetNodeID& ID, const GRState* V) { + V->Env.Profile(ID); + ID.AddPointer(V->St); + V->GDM.Profile(ID); + } + + /// Profile - Used to profile the contents of this object for inclusion + /// in a FoldingSet. + void Profile(llvm::FoldingSetNodeID& ID) const { + Profile(ID, this); + } + + SVal LookupExpr(Expr* E) const { + return Env.LookupExpr(E); + } + + // Iterators. + typedef Environment::seb_iterator seb_iterator; + seb_iterator seb_begin() const { return Env.seb_begin(); } + seb_iterator seb_end() const { return Env.beb_end(); } + + typedef Environment::beb_iterator beb_iterator; + beb_iterator beb_begin() const { return Env.beb_begin(); } + beb_iterator beb_end() const { return Env.beb_end(); } + + // Trait based GDM dispatch. + void* const* FindGDM(void* K) const; + + template <typename T> + typename GRStateTrait<T>::data_type + get() const { + return GRStateTrait<T>::MakeData(FindGDM(GRStateTrait<T>::GDMIndex())); + } + + template<typename T> + typename GRStateTrait<T>::lookup_type + get(typename GRStateTrait<T>::key_type key) const { + void* const* d = FindGDM(GRStateTrait<T>::GDMIndex()); + return GRStateTrait<T>::Lookup(GRStateTrait<T>::MakeData(d), key); + } + + template<typename T> + bool contains(typename GRStateTrait<T>::key_type key) const { + void* const* d = FindGDM(GRStateTrait<T>::GDMIndex()); + return GRStateTrait<T>::Contains(GRStateTrait<T>::MakeData(d), key); + } + + // State pretty-printing. + class Printer { + public: + virtual ~Printer() {} + virtual void Print(std::ostream& Out, const GRState* state, + const char* nl, const char* sep) = 0; + }; + + void print(std::ostream& Out, StoreManager& StoreMgr, + ConstraintManager& ConstraintMgr, + Printer **Beg = 0, Printer **End = 0, + const char* nl = "\n", const char *sep = "") const; + + // Tags used for the Generic Data Map. + struct NullDerefTag { + static int TagInt; + typedef const SVal* data_type; + }; +}; + +template<> struct GRTrait<GRState*> { + static inline void* toPtr(GRState* St) { return (void*) St; } + static inline GRState* toState(void* P) { return (GRState*) P; } + static inline void Profile(llvm::FoldingSetNodeID& profile, GRState* St) { + // At this point states have already been uniqued. Just + // add the pointer. + profile.AddPointer(St); + } +}; + + +class GRStateSet { + typedef llvm::SmallPtrSet<const GRState*,5> ImplTy; + ImplTy Impl; +public: + GRStateSet() {} + + inline void Add(const GRState* St) { + Impl.insert(St); + } + + typedef ImplTy::const_iterator iterator; + + inline unsigned size() const { return Impl.size(); } + inline bool empty() const { return Impl.empty(); } + + inline iterator begin() const { return Impl.begin(); } + inline iterator end() const { return Impl.end(); } + + class AutoPopulate { + GRStateSet& S; + unsigned StartSize; + const GRState* St; + public: + AutoPopulate(GRStateSet& s, const GRState* st) + : S(s), StartSize(S.size()), St(st) {} + + ~AutoPopulate() { + if (StartSize == S.size()) + S.Add(St); + } + }; +}; + +//===----------------------------------------------------------------------===// +// GRStateManager - Factory object for GRStates. +//===----------------------------------------------------------------------===// + +class GRStateRef; + +class GRStateManager { + friend class GRExprEngine; + friend class GRStateRef; + +private: + EnvironmentManager EnvMgr; + llvm::OwningPtr<StoreManager> StoreMgr; + llvm::OwningPtr<ConstraintManager> ConstraintMgr; + GRState::IntSetTy::Factory ISetFactory; + + GRState::GenericDataMap::Factory GDMFactory; + + typedef llvm::DenseMap<void*,std::pair<void*,void (*)(void*)> > GDMContextsTy; + GDMContextsTy GDMContexts; + + /// Printers - A set of printer objects used for pretty-printing a GRState. + /// GRStateManager owns these objects. + std::vector<GRState::Printer*> Printers; + + /// StateSet - FoldingSet containing all the states created for analyzing + /// a particular function. This is used to unique states. + llvm::FoldingSet<GRState> StateSet; + + /// ValueMgr - Object that manages the data for all created SVals. + ValueManager ValueMgr; + + /// Alloc - A BumpPtrAllocator to allocate states. + llvm::BumpPtrAllocator& Alloc; + + /// CurrentStmt - The block-level statement currently being visited. This + /// is set by GRExprEngine. + Stmt* CurrentStmt; + + /// cfg - The CFG for the analyzed function/method. + CFG& cfg; + + /// codedecl - The Decl representing the function/method being analyzed. + const Decl& codedecl; + + /// TF - Object that represents a bundle of transfer functions + /// for manipulating and creating SVals. + GRTransferFuncs* TF; + + /// Liveness - live-variables information of the ValueDecl* and block-level + /// Expr* in the CFG. Used to get initial store and prune out dead state. + LiveVariables& Liveness; + +private: + + Environment RemoveBlkExpr(const Environment& Env, Expr* E) { + return EnvMgr.RemoveBlkExpr(Env, E); + } + + // FIXME: Remove when we do lazy initializaton of variable bindings. +// const GRState* BindVar(const GRState* St, VarDecl* D, SVal V) { +// return SetSVal(St, getLoc(D), V); +// } + +public: + + GRStateManager(ASTContext& Ctx, + StoreManagerCreator CreateStoreManager, + ConstraintManagerCreator CreateConstraintManager, + llvm::BumpPtrAllocator& alloc, CFG& c, + const Decl& cd, LiveVariables& L) + : EnvMgr(alloc), + ISetFactory(alloc), + GDMFactory(alloc), + ValueMgr(alloc, Ctx), + Alloc(alloc), + cfg(c), + codedecl(cd), + Liveness(L) { + StoreMgr.reset((*CreateStoreManager)(*this)); + ConstraintMgr.reset((*CreateConstraintManager)(*this)); + } + + ~GRStateManager(); + + const GRState* getInitialState(); + + ASTContext &getContext() { return ValueMgr.getContext(); } + const ASTContext &getContext() const { return ValueMgr.getContext(); } + + const Decl &getCodeDecl() { return codedecl; } + GRTransferFuncs& getTransferFuncs() { return *TF; } + + BasicValueFactory &getBasicVals() { + return ValueMgr.getBasicValueFactory(); + } + const BasicValueFactory& getBasicVals() const { + return ValueMgr.getBasicValueFactory(); + } + + SymbolManager &getSymbolManager() { + return ValueMgr.getSymbolManager(); + } + const SymbolManager &getSymbolManager() const { + return ValueMgr.getSymbolManager(); + } + + ValueManager &getValueManager() { return ValueMgr; } + const ValueManager &getValueManager() const { return ValueMgr; } + + LiveVariables& getLiveVariables() { return Liveness; } + llvm::BumpPtrAllocator& getAllocator() { return Alloc; } + + MemRegionManager& getRegionManager() { + return ValueMgr.getRegionManager(); + } + const MemRegionManager& getRegionManager() const { + return ValueMgr.getRegionManager(); + } + + StoreManager& getStoreManager() { return *StoreMgr; } + ConstraintManager& getConstraintManager() { return *ConstraintMgr; } + + const GRState* BindDecl(const GRState* St, const VarDecl* VD, SVal IVal) { + // Store manager should return a persistent state. + return StoreMgr->BindDecl(St, VD, IVal); + } + + const GRState* BindDeclWithNoInit(const GRState* St, const VarDecl* VD) { + // Store manager should return a persistent state. + return StoreMgr->BindDeclWithNoInit(St, VD); + } + + /// BindCompoundLiteral - Return the state that has the bindings currently + /// in 'state' plus the bindings for the CompoundLiteral. 'R' is the region + /// for the compound literal and 'BegInit' and 'EndInit' represent an + /// array of initializer values. + const GRState* BindCompoundLiteral(const GRState* St, + const CompoundLiteralExpr* CL, SVal V) { + return StoreMgr->BindCompoundLiteral(St, CL, V); + } + + const GRState* RemoveDeadBindings(const GRState* St, Stmt* Loc, + SymbolReaper& SymReaper); + + const GRState* RemoveSubExprBindings(const GRState* St) { + GRState NewSt = *St; + NewSt.Env = EnvMgr.RemoveSubExprBindings(NewSt.Env); + return getPersistentState(NewSt); + } + + + // Utility methods for getting regions. + + VarRegion* getRegion(const VarDecl* D) { + return getRegionManager().getVarRegion(D); + } + + const MemRegion* getSelfRegion(const GRState* state) { + return StoreMgr->getSelfRegion(state->getStore()); + } + + // Get the lvalue for a variable reference. + SVal GetLValue(const GRState* St, const VarDecl* D) { + return StoreMgr->getLValueVar(St, D); + } + + // Get the lvalue for a StringLiteral. + SVal GetLValue(const GRState* St, const StringLiteral* E) { + return StoreMgr->getLValueString(St, E); + } + + SVal GetLValue(const GRState* St, const CompoundLiteralExpr* CL) { + return StoreMgr->getLValueCompoundLiteral(St, CL); + } + + // Get the lvalue for an ivar reference. + SVal GetLValue(const GRState* St, const ObjCIvarDecl* D, SVal Base) { + return StoreMgr->getLValueIvar(St, D, Base); + } + + // Get the lvalue for a field reference. + SVal GetLValue(const GRState* St, SVal Base, const FieldDecl* D) { + return StoreMgr->getLValueField(St, Base, D); + } + + // Get the lvalue for an array index. + SVal GetLValue(const GRState* St, QualType ElementType, SVal Base, SVal Idx) { + return StoreMgr->getLValueElement(St, ElementType, Base, Idx); + } + + // Methods that query & manipulate the Environment. + + SVal GetSVal(const GRState* St, Stmt* Ex) { + return St->getEnvironment().GetSVal(Ex, getBasicVals()); + } + + SVal GetSValAsScalarOrLoc(const GRState* state, const Stmt *S) { + if (const Expr *Ex = dyn_cast<Expr>(S)) { + QualType T = Ex->getType(); + if (Loc::IsLocType(T) || T->isIntegerType()) + return GetSVal(state, S); + } + + return UnknownVal(); + } + + + SVal GetSVal(const GRState* St, const Stmt* Ex) { + return St->getEnvironment().GetSVal(const_cast<Stmt*>(Ex), getBasicVals()); + } + + SVal GetBlkExprSVal(const GRState* St, Stmt* Ex) { + return St->getEnvironment().GetBlkExprSVal(Ex, getBasicVals()); + } + + + + const GRState* BindExpr(const GRState* St, Stmt* Ex, SVal V, + bool isBlkExpr, bool Invalidate) { + + const Environment& OldEnv = St->getEnvironment(); + Environment NewEnv = EnvMgr.BindExpr(OldEnv, Ex, V, isBlkExpr, Invalidate); + + if (NewEnv == OldEnv) + return St; + + GRState NewSt = *St; + NewSt.Env = NewEnv; + return getPersistentState(NewSt); + } + + const GRState* BindExpr(const GRState* St, Stmt* Ex, SVal V, + bool Invalidate = true) { + + bool isBlkExpr = false; + + if (Ex == CurrentStmt) { + // FIXME: Should this just be an assertion? When would we want to set + // the value of a block-level expression if it wasn't CurrentStmt? + isBlkExpr = cfg.isBlkExpr(Ex); + + if (!isBlkExpr) + return St; + } + + return BindExpr(St, Ex, V, isBlkExpr, Invalidate); + } + + SVal ArrayToPointer(Loc Array) { + return StoreMgr->ArrayToPointer(Array); + } + + // Methods that manipulate the GDM. + const GRState* addGDM(const GRState* St, void* Key, void* Data); + + // Methods that query or create regions. + bool hasStackStorage(const MemRegion* R) { + return getRegionManager().hasStackStorage(R); + } + + // Methods that query & manipulate the Store. + + void iterBindings(const GRState* state, StoreManager::BindingsHandler& F) { + StoreMgr->iterBindings(state->getStore(), F); + } + + + SVal GetSVal(const GRState* state, Loc LV, QualType T = QualType()) { + return StoreMgr->Retrieve(state, LV, T); + } + + SVal GetSVal(const GRState* state, const MemRegion* R) { + return StoreMgr->Retrieve(state, loc::MemRegionVal(R)); + } + + SVal GetSValAsScalarOrLoc(const GRState* state, const MemRegion *R) { + // We only want to do fetches from regions that we can actually bind + // values. For example, SymbolicRegions of type 'id<...>' cannot + // have direct bindings (but their can be bindings on their subregions). + if (!R->isBoundable(getContext())) + return UnknownVal(); + + if (const TypedRegion *TR = dyn_cast<TypedRegion>(R)) { + QualType T = TR->getValueType(getContext()); + if (Loc::IsLocType(T) || T->isIntegerType()) + return GetSVal(state, R); + } + + return UnknownVal(); + } + + const GRState* BindLoc(const GRState* St, Loc LV, SVal V) { + return StoreMgr->Bind(St, LV, V); + } + + void Unbind(GRState& St, Loc LV) { + St.St = StoreMgr->Remove(St.St, LV); + } + + const GRState* Unbind(const GRState* St, Loc LV); + + const GRState* getPersistentState(GRState& Impl); + + // MakeStateWithStore - get a persistent state with the new store. + const GRState* MakeStateWithStore(const GRState* St, Store store); + + bool isEqual(const GRState* state, Expr* Ex, const llvm::APSInt& V); + bool isEqual(const GRState* state, Expr* Ex, uint64_t); + + + //==---------------------------------------------------------------------==// + // Generic Data Map methods. + //==---------------------------------------------------------------------==// + // + // GRStateManager and GRState support a "generic data map" that allows + // different clients of GRState objects to embed arbitrary data within a + // GRState object. The generic data map is essentially an immutable map + // from a "tag" (that acts as the "key" for a client) and opaque values. + // Tags/keys and values are simply void* values. The typical way that clients + // generate unique tags are by taking the address of a static variable. + // Clients are responsible for ensuring that data values referred to by a + // the data pointer are immutable (and thus are essentially purely functional + // data). + // + // The templated methods below use the GRStateTrait<T> class + // to resolve keys into the GDM and to return data values to clients. + // + + // Trait based GDM dispatch. + template <typename T> + const GRState* set(const GRState* st, typename GRStateTrait<T>::data_type D) { + return addGDM(st, GRStateTrait<T>::GDMIndex(), + GRStateTrait<T>::MakeVoidPtr(D)); + } + + template<typename T> + const GRState* set(const GRState* st, + typename GRStateTrait<T>::key_type K, + typename GRStateTrait<T>::value_type V, + typename GRStateTrait<T>::context_type C) { + + return addGDM(st, GRStateTrait<T>::GDMIndex(), + GRStateTrait<T>::MakeVoidPtr(GRStateTrait<T>::Set(st->get<T>(), K, V, C))); + } + + template <typename T> + const GRState* add(const GRState* st, + typename GRStateTrait<T>::key_type K, + typename GRStateTrait<T>::context_type C) { + return addGDM(st, GRStateTrait<T>::GDMIndex(), + GRStateTrait<T>::MakeVoidPtr(GRStateTrait<T>::Add(st->get<T>(), K, C))); + } + + template <typename T> + const GRState* remove(const GRState* st, + typename GRStateTrait<T>::key_type K, + typename GRStateTrait<T>::context_type C) { + + return addGDM(st, GRStateTrait<T>::GDMIndex(), + GRStateTrait<T>::MakeVoidPtr(GRStateTrait<T>::Remove(st->get<T>(), K, C))); + } + + + void* FindGDMContext(void* index, + void* (*CreateContext)(llvm::BumpPtrAllocator&), + void (*DeleteContext)(void*)); + + template <typename T> + typename GRStateTrait<T>::context_type get_context() { + void* p = FindGDMContext(GRStateTrait<T>::GDMIndex(), + GRStateTrait<T>::CreateContext, + GRStateTrait<T>::DeleteContext); + + return GRStateTrait<T>::MakeContext(p); + } + + //==---------------------------------------------------------------------==// + // Constraints on values. + //==---------------------------------------------------------------------==// + // + // Each GRState records constraints on symbolic values. These constraints + // are managed using the ConstraintManager associated with a GRStateManager. + // As constraints gradually accrue on symbolic values, added constraints + // may conflict and indicate that a state is infeasible (as no real values + // could satisfy all the constraints). This is the principal mechanism + // for modeling path-sensitivity in GRExprEngine/GRState. + // + // Various "Assume" methods form the interface for adding constraints to + // symbolic values. A call to "Assume" indicates an assumption being placed + // on one or symbolic values. Assume methods take the following inputs: + // + // (1) A GRState object representing the current state. + // + // (2) The assumed constraint (which is specific to a given "Assume" method). + // + // (3) A binary value "Assumption" that indicates whether the constraint is + // assumed to be true or false. + // + // The output of "Assume" are two values: + // + // (a) "isFeasible" is set to true or false to indicate whether or not + // the assumption is feasible. + // + // (b) A new GRState object with the added constraints. + // + // FIXME: (a) should probably disappear since it is redundant with (b). + // (i.e., (b) could just be set to NULL). + // + + const GRState* Assume(const GRState* St, SVal Cond, bool Assumption, + bool& isFeasible) { + const GRState *state = + ConstraintMgr->Assume(St, Cond, Assumption, isFeasible); + assert(!isFeasible || state); + return isFeasible ? state : NULL; + } + + const GRState* AssumeInBound(const GRState* St, SVal Idx, SVal UpperBound, + bool Assumption, bool& isFeasible) { + const GRState *state = + ConstraintMgr->AssumeInBound(St, Idx, UpperBound, Assumption, + isFeasible); + assert(!isFeasible || state); + return isFeasible ? state : NULL; + } + + const llvm::APSInt* getSymVal(const GRState* St, SymbolRef sym) { + return ConstraintMgr->getSymVal(St, sym); + } + + void EndPath(const GRState* St) { + ConstraintMgr->EndPath(St); + } + + bool scanReachableSymbols(SVal val, const GRState* state, + SymbolVisitor& visitor); +}; + +//===----------------------------------------------------------------------===// +// GRStateRef - A "fat" reference to GRState that also bundles GRStateManager. +//===----------------------------------------------------------------------===// + +class GRStateRef { + const GRState* St; + GRStateManager* Mgr; +public: + GRStateRef(const GRState* st, GRStateManager& mgr) : St(st), Mgr(&mgr) {} + + const GRState* getState() const { return St; } + operator const GRState*() const { return St; } + GRStateManager& getManager() const { return *Mgr; } + + SVal GetSVal(Expr* Ex) { + return Mgr->GetSVal(St, Ex); + } + + SVal GetBlkExprSVal(Expr* Ex) { + return Mgr->GetBlkExprSVal(St, Ex); + } + + SVal GetSValAsScalarOrLoc(const Expr *Ex) { + return Mgr->GetSValAsScalarOrLoc(St, Ex); + } + + SVal GetSVal(Loc LV, QualType T = QualType()) { + return Mgr->GetSVal(St, LV, T); + } + + SVal GetSVal(const MemRegion* R) { + return Mgr->GetSVal(St, R); + } + + SVal GetSValAsScalarOrLoc(const MemRegion *R) { + return Mgr->GetSValAsScalarOrLoc(St, R); + } + + GRStateRef BindExpr(Stmt* Ex, SVal V, bool isBlkExpr, bool Invalidate) { + return GRStateRef(Mgr->BindExpr(St, Ex, V, isBlkExpr, Invalidate), *Mgr); + } + + GRStateRef BindExpr(Stmt* Ex, SVal V, bool Invalidate = true) { + return GRStateRef(Mgr->BindExpr(St, Ex, V, Invalidate), *Mgr); + } + + GRStateRef BindDecl(const VarDecl* VD, SVal InitVal) { + return GRStateRef(Mgr->BindDecl(St, VD, InitVal), *Mgr); + } + + GRStateRef BindLoc(Loc LV, SVal V) { + return GRStateRef(Mgr->BindLoc(St, LV, V), *Mgr); + } + + GRStateRef BindLoc(SVal LV, SVal V) { + if (!isa<Loc>(LV)) return *this; + return BindLoc(cast<Loc>(LV), V); + } + + GRStateRef Unbind(Loc LV) { + return GRStateRef(Mgr->Unbind(St, LV), *Mgr); + } + + // Trait based GDM dispatch. + template<typename T> + typename GRStateTrait<T>::data_type get() const { + return St->get<T>(); + } + + template<typename T> + typename GRStateTrait<T>::lookup_type + get(typename GRStateTrait<T>::key_type key) const { + return St->get<T>(key); + } + + template<typename T> + GRStateRef set(typename GRStateTrait<T>::data_type D) { + return GRStateRef(Mgr->set<T>(St, D), *Mgr); + } + + template <typename T> + typename GRStateTrait<T>::context_type get_context() { + return Mgr->get_context<T>(); + } + + template<typename T> + GRStateRef set(typename GRStateTrait<T>::key_type K, + typename GRStateTrait<T>::value_type E, + typename GRStateTrait<T>::context_type C) { + return GRStateRef(Mgr->set<T>(St, K, E, C), *Mgr); + } + + template<typename T> + GRStateRef set(typename GRStateTrait<T>::key_type K, + typename GRStateTrait<T>::value_type E) { + return GRStateRef(Mgr->set<T>(St, K, E, get_context<T>()), *Mgr); + } + + template<typename T> + GRStateRef add(typename GRStateTrait<T>::key_type K) { + return GRStateRef(Mgr->add<T>(St, K, get_context<T>()), *Mgr); + } + + template<typename T> + GRStateRef remove(typename GRStateTrait<T>::key_type K, + typename GRStateTrait<T>::context_type C) { + return GRStateRef(Mgr->remove<T>(St, K, C), *Mgr); + } + + template<typename T> + GRStateRef remove(typename GRStateTrait<T>::key_type K) { + return GRStateRef(Mgr->remove<T>(St, K, get_context<T>()), *Mgr); + } + + template<typename T> + bool contains(typename GRStateTrait<T>::key_type key) const { + return St->contains<T>(key); + } + + // Lvalue methods. + SVal GetLValue(const VarDecl* VD) { + return Mgr->GetLValue(St, VD); + } + + GRStateRef Assume(SVal Cond, bool Assumption, bool& isFeasible) { + return GRStateRef(Mgr->Assume(St, Cond, Assumption, isFeasible), *Mgr); + } + + template <typename CB> + CB scanReachableSymbols(SVal val) { + CB cb(*this); + Mgr->scanReachableSymbols(val, St, cb); + return cb; + } + + SymbolManager& getSymbolManager() { return Mgr->getSymbolManager(); } + BasicValueFactory& getBasicVals() { return Mgr->getBasicVals(); } + + // Pretty-printing. + void print(std::ostream& Out, const char* nl = "\n", + const char *sep = "") const; + + void printStdErr() const; + + void printDOT(std::ostream& Out) const; +}; + +} // end clang namespace + +#endif |