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// SValBuilder.h - Construction of SVals from evaluating expressions -*- 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 SValBuilder, a class that defines the interface for
// "symbolical evaluators" which construct an SVal from an expression.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_ANALYSIS_SVALBUILDER
#define LLVM_CLANG_ANALYSIS_SVALBUILDER
#include "clang/AST/Expr.h"
#include "clang/Checker/PathSensitive/SVals.h"
namespace clang {
class GRState;
class ValueManager;
class SValBuilder {
friend class ValueManager;
protected:
ValueManager &ValMgr;
public:
// FIXME: Make these protected again one RegionStoreManager correctly
// handles loads from differening bound value types.
virtual SVal evalCastNL(NonLoc val, QualType castTy) = 0;
virtual SVal evalCastL(Loc val, QualType castTy) = 0;
public:
SValBuilder(ValueManager &valMgr) : ValMgr(valMgr) {}
virtual ~SValBuilder() {}
SVal evalCast(SVal V, QualType castTy, QualType originalType);
virtual SVal evalMinus(NonLoc val) = 0;
virtual SVal evalComplement(NonLoc val) = 0;
virtual SVal evalBinOpNN(const GRState *state, BinaryOperator::Opcode Op,
NonLoc lhs, NonLoc rhs, QualType resultTy) = 0;
virtual SVal evalBinOpLL(const GRState *state, BinaryOperator::Opcode Op,
Loc lhs, Loc rhs, QualType resultTy) = 0;
virtual SVal evalBinOpLN(const GRState *state, BinaryOperator::Opcode Op,
Loc lhs, NonLoc rhs, QualType resultTy) = 0;
/// getKnownValue - evaluates a given SVal. If the SVal has only one possible
/// (integer) value, that value is returned. Otherwise, returns NULL.
virtual const llvm::APSInt *getKnownValue(const GRState *state, SVal V) = 0;
SVal evalBinOp(const GRState *ST, BinaryOperator::Opcode Op,
SVal L, SVal R, QualType T);
DefinedOrUnknownSVal evalEQ(const GRState *ST, DefinedOrUnknownSVal L,
DefinedOrUnknownSVal R);
};
SValBuilder* createSimpleSValBuilder(ValueManager &valMgr);
} // end clang namespace
#endif
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