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A Java Optimization Framework

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package soot.validation;

/*-
 * #%L
 * Soot - a J*va Optimization Framework
 * %%
 * Copyright (C) 1997 - 2018 Raja Vallée-Rai and others
 * %%
 * 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 2.1 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
 * .
 * #L%
 */

import java.util.List;

import soot.SootClass;

/**
 * Validator that checks for impossible combinations of class flags
 * 
 * @author Steven Arzt
 *
 */
public enum ClassFlagsValidator implements ClassValidator {
  INSTANCE;

  public static ClassFlagsValidator v() {
    return INSTANCE;
  }

  @Override
  public void validate(SootClass sc, List exceptions) {
    if (sc.isInterface() && sc.isEnum()) {
      exceptions.add(new ValidationException(sc, "Class is both an interface and an enum"));
    }
    if (sc.isSynchronized()) {
      exceptions.add(new ValidationException(sc, "Classes cannot be synchronized"));
    }
  }

  @Override
  public boolean isBasicValidator() {
    return true;
  }
}