package net.sourceforge.phpdt.internal.compiler.ast;

import java.util.List;
import java.util.ArrayList;

/**
 * @author Matthieu Casanova
 */
public abstract class UnaryExpression extends OperatorExpression {

  public Expression expression;

  public UnaryExpression(final Expression expression, final int operator, final int sourceStart, final int sourceEnd) {
    super(operator, sourceStart, sourceEnd);
    this.expression = expression;
  }

    /**
   * Get the variables from outside (parameters, globals ...)
   * @return the variables from outside
   */
  public List getOutsideVariable() {
    return new ArrayList();
  }

  /**
   * get the modified variables.
   * @return the variables from we change value
   */
  public List getModifiedVariable() {
    return expression.getModifiedVariable();
  }

  /**
   * Get the variables used.
   * @return the variables used
   */
  public List getUsedVariable() {
    return expression.getUsedVariable();
  }
}