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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.Body;
import soot.SootMethodRef;
import soot.Type;
import soot.Unit;
import soot.jimple.InvokeExpr;
import soot.jimple.Stmt;

public enum CheckEscapingValidator implements BodyValidator {
  INSTANCE;

  public static CheckEscapingValidator v() {
    return INSTANCE;
  }

  @Override
  public void validate(Body body, List exception) {
    for (Unit u : body.getUnits()) {
      if (u instanceof Stmt) {
        Stmt stmt = (Stmt) u;
        if (stmt.containsInvokeExpr()) {
          InvokeExpr iexpr = stmt.getInvokeExpr();
          SootMethodRef ref = iexpr.getMethodRef();
          if (ref.name().contains("'") || ref.declaringClass().getName().contains("'")) {
            exception.add(new ValidationException(stmt, "Escaped name found in signature"));
          }
          for (Type paramType : ref.parameterTypes()) {
            if (paramType.toString().contains("'")) {
              exception.add(new ValidationException(stmt, "Escaped name found in signature"));
            }
          }
        }
      }
    }
  }

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