SVFGBuilder.h

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//===- SVFGBuilder.h -- Building SVFG-----------------------------------------//
//
//                     SVF: Static Value-Flow Analysis
//
// Copyright (C) <2013->  <Yulei Sui>
//
 
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
 
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
 
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.
//
//===----------------------------------------------------------------------===//
 
/*
 * AndersenMemSSA.h
 *
 *  Created on: Oct 27, 2013
 *      Author: Yulei Sui
 */
 
#ifndef ANDERSENMEMSSA_H_
#define ANDERSENMEMSSA_H_
 
#include "MemoryModel/PointerAnalysis.h"
#include "Graphs/SVFGOPT.h"
#include "Util/Options.h"
 
namespace SVF
{
 
class SVFGBuilder
{
 
public:
    typedef PointerAnalysis::CallSiteSet CallSiteSet;
    typedef PointerAnalysis::CallEdgeMap CallEdgeMap;
    typedef PointerAnalysis::FunctionSet FunctionSet;
    typedef SVFG::SVFGEdgeSetTy SVFGEdgeSet;
 
    explicit SVFGBuilder(bool _SVFGWithIndCall = Options::SVFGWithIndirectCall(), bool _SVFGWithPostOpts = Options::OPTSVFG())
        : svfg(nullptr), SVFGWithIndCall(_SVFGWithIndCall), SVFGWithPostOpts(_SVFGWithPostOpts)
    {
    }
 
    virtual ~SVFGBuilder() = default;
 
    SVFG* buildPTROnlySVFG(BVDataPTAImpl* pta);
    SVFG* buildFullSVFG(BVDataPTAImpl* pta);
 
    inline SVFG* getSVFG() const
    {
        return svfg.get();
    }
 
    inline void markValidVFEdge(SVFGEdgeSet& edges)
    {
        for(SVFGEdgeSet::iterator it = edges.begin(), eit = edges.end(); it!=eit; ++it)
            vfEdgesAtIndCallSite.erase(*it);
    }
    inline bool isSpuriousVFEdgeAtIndCallSite(const SVFGEdge* edge)
    {
        return vfEdgesAtIndCallSite.find(const_cast<SVFGEdge*>(edge))!=vfEdgesAtIndCallSite.end();
    }
 
    virtual std::unique_ptr<MemSSA> buildMSSA(BVDataPTAImpl* pta, bool ptrOnlyMSSA);
 
protected:
    SVFG* build(BVDataPTAImpl* pta, VFG::VFGK kind);
    virtual void buildSVFG();
    virtual void releaseMemory();
 
    SVFGEdgeSet vfEdgesAtIndCallSite;
    std::unique_ptr<SVFG> svfg;
    bool SVFGWithIndCall;
    bool SVFGWithPostOpts;
};
 
} // End namespace SVF
 
#endif /* ANDERSENMEMSSA_H_ */