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/* Qilin - a Java Pointer Analysis Framework
 * Copyright (C) 2021-2030 Qilin developers
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation, either version 3.0 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 General Lesser Public License for more details.
 *
 * You should have received a copy of the GNU General Lesser Public
 * License along with this program.  If not, see
 * .
 */

package qilin.parm.select;

import java.util.Set;
import qilin.core.context.Context;
import qilin.core.pag.AllocNode;
import qilin.core.pag.Field;
import qilin.core.pag.FieldValNode;
import qilin.core.pag.LocalVarNode;
import qilin.parm.ctxcons.CtxConstructor;
import sootup.core.model.SootMethod;

public class PartialVarSelector extends CtxSelector {
  private final int k;
  private final int hk;
  // precision-critical nodes selected by the partial-variable-level approaches, e.g., Eagle,
  // Turner.
  private final Set csnodes;
  private final Set pcm;

  public PartialVarSelector(int k, int hk, Set csnodes, Set pcm) {
    this.k = k;
    this.hk = hk;
    this.csnodes = csnodes;
    this.pcm = pcm;
  }

  @Override
  public Context select(SootMethod m, Context context) {
    if (pcm.contains(m)) {
      return contextTailor(context, k);
    } else {
      return CtxConstructor.emptyContext;
    }
  }

  @Override
  public Context select(LocalVarNode lvn, Context context) {
    Object ir = lvn.getVariable();
    if (csnodes.contains(ir)) {
      return contextTailor(context, k);
    } else {
      return CtxConstructor.emptyContext;
    }
  }

  @Override
  public Context select(FieldValNode fvn, Context context) {
    Object tmp = fvn.getField();
    if (tmp instanceof Field) {
      tmp = ((Field) tmp).getField();
    }
    if (csnodes.contains(tmp)) {
      return contextTailor(context, k);
    } else {
      return CtxConstructor.emptyContext;
    }
  }

  @Override
  public Context select(AllocNode heap, Context context) {
    Object ir = heap.getNewExpr();
    if (csnodes.contains(ir)) {
      return contextTailor(context, hk);
    } else {
      return CtxConstructor.emptyContext;
    }
  }
}
    

    

    

            

    

            



    
    






    
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