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/*
 * Copyright 2011,2012 Metamarkets Group Inc.
 *
 * 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.metamx.common.guava.nary;

import java.util.Iterator;

/**
 */
public class TrinaryTransformIterable implements Iterable
{
  public static  TrinaryTransformIterable create(
      Iterable iterable1,
      Iterable iterable2,
      Iterable iterable3,
      TrinaryFn fn
  )
  {
    return new TrinaryTransformIterable(iterable1, iterable2, iterable3, fn);
  }

  private final Iterable iterable1;
  private final Iterable iterable2;
  private final Iterable iterable3;
  private final TrinaryFn trinaryFn;

  public TrinaryTransformIterable(
      Iterable iterable1,
      Iterable iterable2,
      Iterable iterable3,
      TrinaryFn trinaryFn
  )
  {
    this.iterable1 = iterable1;
    this.iterable2 = iterable2;
    this.iterable3 = iterable3;
    this.trinaryFn = trinaryFn;
  }

  @Override
  public Iterator iterator()
  {
    return TrinaryTransformIterator.create(iterable1.iterator(), iterable2.iterator(), iterable3.iterator(), trinaryFn);
  }
}