platform/lang-impl/src/com/intellij/codeInsight/template/Iteration.java

   1 /*
   2  * Copyright 2000-2010 JetBrains s.r.o.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 package com.intellij.codeInsight.template;
  17
  18 /**
  19  * @author Eugene.Kudelevsky
  20  */
  21 public abstract class Iteration {
  22   protected final int myMaxIndex;
  23   protected int myIndex;
  24   private final Iteration myParentIteration;
  25
  26   public Iteration(int index, int maxIndex, Iteration parentIteration) {
  27     myIndex = index;
  28     myMaxIndex = maxIndex;
  29     myParentIteration = parentIteration;
  30   }
  31
  32   protected void next() {
  33     myIndex++;
  34     if (myIndex < myMaxIndex) {
  35       iter();
  36     }
  37     else if (myIndex == myMaxIndex && myParentIteration != null) {
  38       myParentIteration.next();
  39     }
  40   }
  41
  42   public boolean isFinished() {
  43     return myIndex >= myMaxIndex;
  44   }
  45
  46   protected abstract void iter();
  47 }