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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.Map;
import qilin.core.context.Context;
import qilin.core.pag.AllocNode;
import qilin.core.pag.FieldValNode;
import qilin.core.pag.LocalVarNode;
import sootup.core.model.SootMethod;

public class FullMethodLvSelector extends CtxSelector {
  private final int k;
  /*
   * Methods and its corresponding context length obtained by Data-driven (OOPSLA 2017).
   * */
  private final Map m2len;

  public FullMethodLvSelector(Map m2len, int k) {
    this.m2len = m2len;
    this.k = k;
  }

  @Override
  public Context select(SootMethod m, Context context) {
    return contextTailor(context, m2len.getOrDefault(m, 0));
  }

  @Override
  public Context select(LocalVarNode lvn, Context context) {
    SootMethod sm = lvn.getMethod();
    return contextTailor(context, m2len.getOrDefault(sm, 0));
  }

  @Override
  public Context select(FieldValNode fvn, Context context) {
    return contextTailor(context, k);
  }

  @Override
  public Context select(AllocNode heap, Context context) {
    SootMethod sm = heap.getMethod();
    return contextTailor(context, Math.max(0, m2len.getOrDefault(sm, 0) - 1));
  }
}