/*
 * Copyright 2000-2010 JetBrains s.r.o.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.intellij.codeInsight.template;

/**
 * @author Eugene.Kudelevsky
 */
public abstract class Iteration {
  protected final int myMaxIndex;
  protected int myIndex;
  private final Iteration myParentIteration;

  public Iteration(int index, int maxIndex, Iteration parentIteration) {
    myIndex = index;
    myMaxIndex = maxIndex;
    myParentIteration = parentIteration;
  }

  protected void next() {
    myIndex++;
    if (myIndex < myMaxIndex) {
      iter();
    }
    else if (myIndex == myMaxIndex && myParentIteration != null) {
      myParentIteration.next();
    }
  }

  public boolean isFinished() {
    return myIndex >= myMaxIndex;
  }

  // returns if next() is going to be invoked
  protected abstract void iter();
}

/*
 * Copyright 2000-2010 JetBrains s.r.o.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.intellij.codeInsight.template;

/**
 * @author Eugene.Kudelevsky
 */
public abstract class Iteration {
  protected final int myMaxIndex;
  protected int myIndex;
  private final Iteration myParentIteration;

  public Iteration(int index, int maxIndex, Iteration parentIteration) {
    myIndex = index;
    myMaxIndex = maxIndex;
    myParentIteration = parentIteration;
  }

  protected void next() {
    myIndex++;
    if (myIndex < myMaxIndex) {
      iter();
    }
    else if (myIndex == myMaxIndex && myParentIteration != null) {
      myParentIteration.next();
    }
  }

  public boolean isFinished() {
    return myIndex >= myMaxIndex;
  }

  protected abstract void iter();
}

clean up