ZipWithIndexIterable.java example

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gs-collections-master
/*
 * Copyright 2015 Goldman Sachs.
 *
 * 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.gs.collections.impl.lazy;

import java.util.Iterator;

import com.gs.collections.api.block.procedure.Procedure;
import com.gs.collections.api.tuple.Pair;
import com.gs.collections.impl.lazy.iterator.ZipWithIndexIterator;
import com.gs.collections.impl.utility.internal.IterableIterate;
import net.jcip.annotations.Immutable;

/**
 * A CollectIterable is an iterable that transforms a source iterable on a condition as it iterates.
 */
@Immutable
public class ZipWithIndexIterable<T>
        extends AbstractLazyIterable<Pair<T, Integer>>
{
    private final Iterable<T> iterable;

    public ZipWithIndexIterable(Iterable<T> iterable)
    {
        this.iterable = iterable;
    }

    public Iterator<Pair<T, Integer>> iterator()
    {
        return new ZipWithIndexIterator<T>(this.iterable);
    }

    public void each(Procedure<? super Pair<T, Integer>> procedure)
    {
        IterableIterate.forEach(this, procedure);
    }
}