org.evosuite.symbolic.expr.StringConstraint Maven / Gradle / Ivy

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/**
 * Copyright (C) 2010-2018 Gordon Fraser, Andrea Arcuri and EvoSuite contributors
 *
 * This file is part of EvoSuite.
 *
 * EvoSuite 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.
 *
 * EvoSuite 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
 * Lesser Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License along with EvoSuite. If
 * not, see .
 */
package org.evosuite.symbolic.expr;

import org.evosuite.Properties;
import org.evosuite.symbolic.ConstraintTooLongException;
import org.evosuite.symbolic.DSEStats;
import org.evosuite.symbolic.expr.bv.IntegerConstant;
import org.evosuite.symbolic.expr.bv.StringComparison;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public final class StringConstraint extends Constraint {

  static Logger log = LoggerFactory.getLogger(StringConstraint.class);

  public StringConstraint(StringComparison left, Comparator comp, IntegerConstant right) {
    super();
    this.left = left;
    this.cmp = comp;
    this.right = right;
    if (getSize() > Properties.DSE_CONSTRAINT_LENGTH) {
      DSEStats.getInstance().reportConstraintTooLong(getSize());
      throw new ConstraintTooLongException(getSize());
    }
  }

  private final StringComparison left;
  private final Comparator cmp;
  private final IntegerConstant right;

  /**
   * 
   */
  private static final long serialVersionUID = -3187023627540040535L;

  @Override
  public Comparator getComparator() {
    return cmp;
  }

  @Override
  public Expression getLeftOperand() {
    return left;
  }

  @Override
  public Expression getRightOperand() {
    return right;
  }

  @Override
  public String toString() {
    return left + cmp.toString() + right;
  }

  @Override
  public Constraint negate() {
    return new StringConstraint(left, cmp.not(), right);
  }

  @Override
  public  K accept(ConstraintVisitor v, V arg) {
    return v.visit(this, arg);
  }

}