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A collection of classes to give a fluent builder for Streams (Lazy Groovy Generators).

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/*
 * Copyright 2013-2014 the original author or authors.
 *
 * 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 groovy.stream.iterators ;

import java.util.Iterator ;

public class SkipIterator extends AbstractIterator {
    private int     numberToSkip ;

    public SkipIterator( Iterator parentIterator, int numberToSkip ) {
        super( parentIterator ) ;
        this.numberToSkip = numberToSkip ;
    }

    @Override
    protected void loadNext() {
        while( !exhausted ) {
            if( numberToSkip-- <= 0 ) {
                break ;
            }
            else if( iterator.hasNext() ) {
                current = iterator.next() ;
            }
            else {
                exhausted = true ;
            }
        }
        if( iterator.hasNext() ) {
            current = iterator.next() ;
        }
        else {
            exhausted = true ;
        }
    }
}