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-rw-r--r--include/clang/Checker/PathSensitive/BasicValueFactory.h197
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diff --git a/include/clang/Checker/PathSensitive/BasicValueFactory.h b/include/clang/Checker/PathSensitive/BasicValueFactory.h
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--- a/include/clang/Checker/PathSensitive/BasicValueFactory.h
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-//=== BasicValueFactory.h - Basic values for Path Sens analysis --*- 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 BasicValueFactory, a class that manages the lifetime
-// of APSInt objects and symbolic constraints used by GRExprEngine
-// and related classes.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef LLVM_CLANG_ANALYSIS_BASICVALUEFACTORY_H
-#define LLVM_CLANG_ANALYSIS_BASICVALUEFACTORY_H
-
-#include "clang/Checker/PathSensitive/SVals.h"
-#include "clang/AST/ASTContext.h"
-#include "llvm/ADT/FoldingSet.h"
-#include "llvm/ADT/APSInt.h"
-#include "llvm/ADT/ImmutableList.h"
-
-namespace clang {
-
- class GRState;
-
-class CompoundValData : public llvm::FoldingSetNode {
- QualType T;
- llvm::ImmutableList<SVal> L;
-
-public:
- CompoundValData(QualType t, llvm::ImmutableList<SVal> l)
- : T(t), L(l) {}
-
- typedef llvm::ImmutableList<SVal>::iterator iterator;
- iterator begin() const { return L.begin(); }
- iterator end() const { return L.end(); }
-
- static void Profile(llvm::FoldingSetNodeID& ID, QualType T,
- llvm::ImmutableList<SVal> L);
-
- void Profile(llvm::FoldingSetNodeID& ID) { Profile(ID, T, L); }
-};
-
-class LazyCompoundValData : public llvm::FoldingSetNode {
- const void *store;
- const TypedRegion *region;
-public:
- LazyCompoundValData(const void *st, const TypedRegion *r)
- : store(st), region(r) {}
-
- const void *getStore() const { return store; }
- const TypedRegion *getRegion() const { return region; }
-
- static void Profile(llvm::FoldingSetNodeID& ID, const void *store,
- const TypedRegion *region);
-
- void Profile(llvm::FoldingSetNodeID& ID) { Profile(ID, store, region); }
-};
-
-class BasicValueFactory {
- typedef llvm::FoldingSet<llvm::FoldingSetNodeWrapper<llvm::APSInt> >
- APSIntSetTy;
-
- ASTContext& Ctx;
- llvm::BumpPtrAllocator& BPAlloc;
-
- APSIntSetTy APSIntSet;
- void* PersistentSVals;
- void* PersistentSValPairs;
-
- llvm::ImmutableList<SVal>::Factory SValListFactory;
- llvm::FoldingSet<CompoundValData> CompoundValDataSet;
- llvm::FoldingSet<LazyCompoundValData> LazyCompoundValDataSet;
-
-public:
- BasicValueFactory(ASTContext& ctx, llvm::BumpPtrAllocator& Alloc)
- : Ctx(ctx), BPAlloc(Alloc), PersistentSVals(0), PersistentSValPairs(0),
- SValListFactory(Alloc) {}
-
- ~BasicValueFactory();
-
- ASTContext& getContext() const { return Ctx; }
-
- const llvm::APSInt& getValue(const llvm::APSInt& X);
- const llvm::APSInt& getValue(const llvm::APInt& X, bool isUnsigned);
- const llvm::APSInt& getValue(uint64_t X, unsigned BitWidth, bool isUnsigned);
- const llvm::APSInt& getValue(uint64_t X, QualType T);
-
- /// Convert - Create a new persistent APSInt with the same value as 'From'
- /// but with the bitwidth and signedness of 'To'.
- const llvm::APSInt &Convert(const llvm::APSInt& To,
- const llvm::APSInt& From) {
-
- if (To.isUnsigned() == From.isUnsigned() &&
- To.getBitWidth() == From.getBitWidth())
- return From;
-
- return getValue(From.getSExtValue(), To.getBitWidth(), To.isUnsigned());
- }
-
- const llvm::APSInt &Convert(QualType T, const llvm::APSInt &From) {
- assert(T->isIntegerType() || Loc::IsLocType(T));
- unsigned bitwidth = Ctx.getTypeSize(T);
- bool isUnsigned = T->isUnsignedIntegerType() || Loc::IsLocType(T);
-
- if (isUnsigned == From.isUnsigned() && bitwidth == From.getBitWidth())
- return From;
-
- return getValue(From.getSExtValue(), bitwidth, isUnsigned);
- }
-
- const llvm::APSInt& getIntValue(uint64_t X, bool isUnsigned) {
- QualType T = isUnsigned ? Ctx.UnsignedIntTy : Ctx.IntTy;
- return getValue(X, T);
- }
-
- inline const llvm::APSInt& getMaxValue(const llvm::APSInt &v) {
- return getValue(llvm::APSInt::getMaxValue(v.getBitWidth(), v.isUnsigned()));
- }
-
- inline const llvm::APSInt& getMinValue(const llvm::APSInt &v) {
- return getValue(llvm::APSInt::getMinValue(v.getBitWidth(), v.isUnsigned()));
- }
-
- inline const llvm::APSInt& getMaxValue(QualType T) {
- assert(T->isIntegerType() || Loc::IsLocType(T));
- bool isUnsigned = T->isUnsignedIntegerType() || Loc::IsLocType(T);
- return getValue(llvm::APSInt::getMaxValue(Ctx.getTypeSize(T), isUnsigned));
- }
-
- inline const llvm::APSInt& getMinValue(QualType T) {
- assert(T->isIntegerType() || Loc::IsLocType(T));
- bool isUnsigned = T->isUnsignedIntegerType() || Loc::IsLocType(T);
- return getValue(llvm::APSInt::getMinValue(Ctx.getTypeSize(T), isUnsigned));
- }
-
- inline const llvm::APSInt& Add1(const llvm::APSInt& V) {
- llvm::APSInt X = V;
- ++X;
- return getValue(X);
- }
-
- inline const llvm::APSInt& Sub1(const llvm::APSInt& V) {
- llvm::APSInt X = V;
- --X;
- return getValue(X);
- }
-
- inline const llvm::APSInt& getZeroWithPtrWidth(bool isUnsigned = true) {
- return getValue(0, Ctx.getTypeSize(Ctx.VoidPtrTy), isUnsigned);
- }
-
- inline const llvm::APSInt &getIntWithPtrWidth(uint64_t X, bool isUnsigned) {
- return getValue(X, Ctx.getTypeSize(Ctx.VoidPtrTy), isUnsigned);
- }
-
- inline const llvm::APSInt& getTruthValue(bool b, QualType T) {
- return getValue(b ? 1 : 0, Ctx.getTypeSize(T), false);
- }
-
- inline const llvm::APSInt& getTruthValue(bool b) {
- return getTruthValue(b, Ctx.IntTy);
- }
-
- const CompoundValData *getCompoundValData(QualType T,
- llvm::ImmutableList<SVal> Vals);
-
- const LazyCompoundValData *getLazyCompoundValData(const void *store,
- const TypedRegion *region);
-
- llvm::ImmutableList<SVal> getEmptySValList() {
- return SValListFactory.GetEmptyList();
- }
-
- llvm::ImmutableList<SVal> consVals(SVal X, llvm::ImmutableList<SVal> L) {
- return SValListFactory.Add(X, L);
- }
-
- const llvm::APSInt* EvaluateAPSInt(BinaryOperator::Opcode Op,
- const llvm::APSInt& V1,
- const llvm::APSInt& V2);
-
- const std::pair<SVal, uintptr_t>&
- getPersistentSValWithData(const SVal& V, uintptr_t Data);
-
- const std::pair<SVal, SVal>&
- getPersistentSValPair(const SVal& V1, const SVal& V2);
-
- const SVal* getPersistentSVal(SVal X);
-};
-
-} // end clang namespace
-
-#endif
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