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+//== Store.h - Interface for maps from Locations to Values ------*- C++ -*--==//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file defined the types Store and StoreManager.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_ANALYSIS_STORE_H
+#define LLVM_CLANG_ANALYSIS_STORE_H
+
+#include "clang/Analysis/PathSensitive/SVals.h"
+#include "clang/Analysis/PathSensitive/MemRegion.h"
+#include "clang/Analysis/PathSensitive/ValueManager.h"
+#include "llvm/ADT/SmallPtrSet.h"
+#include "llvm/ADT/SmallSet.h"
+#include "llvm/ADT/DenseSet.h"
+#include "llvm/ADT/SmallVector.h"
+#include <iosfwd>
+
+namespace clang {
+
+typedef const void* Store;
+
+class GRState;
+class GRStateManager;
+class Stmt;
+class Expr;
+class ObjCIvarDecl;
+class SubRegionMap;
+
+class StoreManager {
+protected:
+ ValueManager &ValMgr;
+ GRStateManager &StateMgr;
+
+ /// MRMgr - Manages region objects associated with this StoreManager.
+ MemRegionManager &MRMgr;
+
+ StoreManager(GRStateManager &stateMgr);
+
+protected:
+ virtual const GRState* AddRegionView(const GRState* St,
+ const MemRegion* View,
+ const MemRegion* Base) {
+ return St;
+ }
+
+public:
+ virtual ~StoreManager() {}
+
+ /// Return the value bound to specified location in a given state.
+ /// \param[in] state The analysis state.
+ /// \param[in] loc The symbolic memory location.
+ /// \param[in] T An optional type that provides a hint indicating the
+ /// expected type of the returned value. This is used if the value is
+ /// lazily computed.
+ /// \return The value bound to the location \c loc.
+ virtual SVal Retrieve(const GRState* state, Loc loc,
+ QualType T = QualType()) = 0;
+
+ /// Return a state with the specified value bound to the given location.
+ /// \param[in] state The analysis state.
+ /// \param[in] loc The symbolic memory location.
+ /// \param[in] val The value to bind to location \c loc.
+ /// \return A pointer to a GRState object that contains the same bindings as
+ /// \c state with the addition of having the value specified by \c val bound
+ /// to the location given for \c loc.
+ virtual const GRState* Bind(const GRState* state, Loc loc, SVal val) = 0;
+
+ virtual Store Remove(Store St, Loc L) = 0;
+
+ /// BindCompoundLiteral - Return the store that has the bindings currently
+ /// in 'store' plus the bindings for the CompoundLiteral. 'R' is the region
+ /// for the compound literal and 'BegInit' and 'EndInit' represent an
+ /// array of initializer values.
+ virtual const GRState* BindCompoundLiteral(const GRState* St,
+ const CompoundLiteralExpr* CL,
+ SVal V) = 0;
+
+ /// getInitialStore - Returns the initial "empty" store representing the
+ /// value bindings upon entry to an analyzed function.
+ virtual Store getInitialStore() = 0;
+
+ /// getRegionManager - Returns the internal RegionManager object that is
+ /// used to query and manipulate MemRegion objects.
+ MemRegionManager& getRegionManager() { return MRMgr; }
+
+ /// getSubRegionMap - Returns an opaque map object that clients can query
+ /// to get the subregions of a given MemRegion object. It is the
+ // caller's responsibility to 'delete' the returned map.
+ virtual SubRegionMap* getSubRegionMap(const GRState *state) = 0;
+
+ virtual SVal getLValueVar(const GRState* St, const VarDecl* VD) = 0;
+
+ virtual SVal getLValueString(const GRState* St, const StringLiteral* S) = 0;
+
+ virtual SVal getLValueCompoundLiteral(const GRState* St,
+ const CompoundLiteralExpr* CL) = 0;
+
+ virtual SVal getLValueIvar(const GRState* St, const ObjCIvarDecl* D,
+ SVal Base) = 0;
+
+ virtual SVal getLValueField(const GRState* St, SVal Base,
+ const FieldDecl* D) = 0;
+
+ virtual SVal getLValueElement(const GRState* St, QualType elementType,
+ SVal Base, SVal Offset) = 0;
+
+ virtual SVal getSizeInElements(const GRState* St, const MemRegion* R) {
+ return UnknownVal();
+ }
+
+ /// ArrayToPointer - Used by GRExprEngine::VistCast to handle implicit
+ /// conversions between arrays and pointers.
+ virtual SVal ArrayToPointer(Loc Array) = 0;
+
+
+ class CastResult {
+ const GRState* State;
+ const MemRegion* R;
+ public:
+ const GRState* getState() const { return State; }
+ const MemRegion* getRegion() const { return R; }
+ CastResult(const GRState* s, const MemRegion* r = 0) : State(s), R(r) {}
+ };
+
+ /// CastRegion - Used by GRExprEngine::VisitCast to handle casts from
+ /// a MemRegion* to a specific location type. 'R' is the region being
+ /// casted and 'CastToTy' the result type of the cast.
+ virtual CastResult CastRegion(const GRState* state, const MemRegion* R,
+ QualType CastToTy);
+
+ /// EvalBinOp - Perform pointer arithmetic.
+ virtual SVal EvalBinOp(const GRState *state,
+ BinaryOperator::Opcode Op, Loc L, NonLoc R) {
+ return UnknownVal();
+ }
+
+ /// getSelfRegion - Returns the region for the 'self' (Objective-C) or
+ /// 'this' object (C++). When used when analyzing a normal function this
+ /// method returns NULL.
+ virtual const MemRegion* getSelfRegion(Store store) = 0;
+
+ virtual Store
+ RemoveDeadBindings(const GRState* state, Stmt* Loc, SymbolReaper& SymReaper,
+ llvm::SmallVectorImpl<const MemRegion*>& RegionRoots) = 0;
+
+ virtual const GRState* BindDecl(const GRState* St, const VarDecl* VD,
+ SVal InitVal) = 0;
+
+ virtual const GRState* BindDeclWithNoInit(const GRState* St,
+ const VarDecl* VD) = 0;
+
+ virtual const GRState* setExtent(const GRState* St,
+ const MemRegion* R, SVal Extent) {
+ return St;
+ }
+
+ virtual const GRState* setDefaultValue(const GRState* St,
+ const MemRegion* R, SVal V) {
+ return St;
+ }
+
+ virtual void print(Store store, std::ostream& Out,
+ const char* nl, const char *sep) = 0;
+
+ class BindingsHandler {
+ public:
+ virtual ~BindingsHandler();
+ virtual bool HandleBinding(StoreManager& SMgr, Store store,
+ const MemRegion* R, SVal val) = 0;
+ };
+
+ /// iterBindings - Iterate over the bindings in the Store.
+ virtual void iterBindings(Store store, BindingsHandler& f) = 0;
+};
+
+/// SubRegionMap - An abstract interface that represents a queryable map
+/// between MemRegion objects and their subregions.
+class SubRegionMap {
+public:
+ virtual ~SubRegionMap() {}
+
+ class Visitor {
+ public:
+ virtual ~Visitor() {};
+ virtual bool Visit(const MemRegion* Parent, const MemRegion* SubRegion) = 0;
+ };
+
+ virtual bool iterSubRegions(const MemRegion* R, Visitor& V) const = 0;
+};
+
+StoreManager* CreateBasicStoreManager(GRStateManager& StMgr);
+StoreManager* CreateRegionStoreManager(GRStateManager& StMgr);
+
+} // end clang namespace
+
+#endif
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