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

/*
 * A pipeline context selector which selects context by firstly using ctxSelA and then ctxSelB.
 * */
public class PipelineSelector extends CtxSelector {
  private final CtxSelector ctxSelA;
  private final CtxSelector ctxSelB;

  public PipelineSelector(CtxSelector lenSelA, CtxSelector lenSelB) {
    this.ctxSelA = lenSelA;
    this.ctxSelB = lenSelB;
  }

  @Override
  public Context select(SootMethod m, Context context) {
    return ctxSelB.select(m, ctxSelA.select(m, context));
  }

  @Override
  public Context select(LocalVarNode lvn, Context context) {
    return ctxSelA.select(lvn, ctxSelB.select(lvn, context));
  }

  @Override
  public Context select(FieldValNode fvn, Context context) {
    return ctxSelA.select(fvn, ctxSelB.select(fvn, context));
  }

  @Override
  public Context select(AllocNode heap, Context context) {
    return ctxSelA.select(heap, ctxSelB.select(heap, context));
  }
}