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// GRSimpleVals.h - Transfer functions for tracking simple 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 defines GRSimpleVals, a sub-class of GRTransferFuncs that
// provides transfer functions for performing simple value tracking with
// limited support for symbolics.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_ANALYSIS_GRSIMPLEVALS
#define LLVM_CLANG_ANALYSIS_GRSIMPLEVALS
#include "clang/Analysis/PathSensitive/GRTransferFuncs.h"
#include "clang/Analysis/PathSensitive/GRExprEngine.h"
namespace clang {
class PathDiagnostic;
class ASTContext;
class GRSimpleVals : public GRTransferFuncs {
protected:
virtual SVal DetermEvalBinOpNN(GRExprEngine& Eng,
BinaryOperator::Opcode Op,
NonLoc L, NonLoc R, QualType T);
public:
GRSimpleVals() {}
virtual ~GRSimpleVals() {}
// Casts.
virtual SVal EvalCast(GRExprEngine& Engine, NonLoc V, QualType CastT);
virtual SVal EvalCast(GRExprEngine& Engine, Loc V, QualType CastT);
// Unary Operators.
virtual SVal EvalMinus(GRExprEngine& Engine, UnaryOperator* U, NonLoc X);
virtual SVal EvalComplement(GRExprEngine& Engine, NonLoc X);
// Binary Operators.
virtual SVal EvalBinOp(GRExprEngine& Engine, BinaryOperator::Opcode Op,
Loc L, Loc R);
// Pointer arithmetic.
virtual SVal EvalBinOp(GRExprEngine& Engine, const GRState *state,
BinaryOperator::Opcode Op, Loc L, NonLoc R);
// Calls.
virtual void EvalCall(ExplodedNodeSet<GRState>& Dst,
GRExprEngine& Engine,
GRStmtNodeBuilder<GRState>& Builder,
CallExpr* CE, SVal L,
ExplodedNode<GRState>* Pred);
virtual void EvalObjCMessageExpr(ExplodedNodeSet<GRState>& Dst,
GRExprEngine& Engine,
GRStmtNodeBuilder<GRState>& Builder,
ObjCMessageExpr* ME,
ExplodedNode<GRState>* Pred);
static void GeneratePathDiagnostic(PathDiagnostic& PD, ASTContext& Ctx,
ExplodedNode<GRState>* N);
protected:
// Equality (==, !=) operators for Locs.
SVal EvalEquality(GRExprEngine& Engine, Loc L, Loc R, bool isEqual);
};
} // end clang namespace
#endif
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