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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.core;

import qilin.core.context.Context;
import qilin.core.pag.Node;
import qilin.core.sets.PointsToSet;
import sootup.core.jimple.basic.Local;
import sootup.core.model.SootField;
import sootup.core.model.SootMethod;

/**
 * A generic interface to any type of pointer analysis.
 *
 * @author Ondrej Lhotak
 */
public interface PointsToAnalysis {

  int THIS_NODE = -1;
  int RETURN_NODE = -2;
  int THROW_NODE = -3;
  String STRING_NODE = "STRING_NODE";
  String EXCEPTION_NODE = "EXCEPTION_NODE";
  String MAIN_THREAD_GROUP_NODE_LOCAL = "MAIN_THREAD_GROUP_NODE_LOCAL";

  /** Returns the set of objects pointed to by variable l. */
  PointsToSet reachingObjects(SootMethod m, Local l);

  PointsToSet reachingObjects(Node n);

  /** Returns the set of objects pointed to by variable l in context c. */
  PointsToSet reachingObjects(Context c, SootMethod m, Local l);

  /** Returns the set of objects pointed to by static field f. */
  PointsToSet reachingObjects(SootField f);

  /**
   * Returns the set of objects pointed to by instance field f of the objects in the PointsToSet s.
   */
  PointsToSet reachingObjects(PointsToSet s, SootField f);

  /** Returns the set of objects pointed to by instance field f of the objects pointed to by l. */
  PointsToSet reachingObjects(SootMethod m, Local l, SootField f);

  /**
   * Returns the set of objects pointed to by instance field f of the objects pointed to by l in
   * context c.
   */
  PointsToSet reachingObjects(Context c, SootMethod m, Local l, SootField f);

  /** Returns the set of objects pointed to by elements of the arrays in the PointsToSet s. */
  PointsToSet reachingObjectsOfArrayElement(PointsToSet s);
}