52 lines
2.3 KiB
Java
52 lines
2.3 KiB
Java
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/*
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* Janino - An embedded Java[TM] compiler
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*
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* Copyright (c) 2001-2010, Arno Unkrig
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification, are permitted provided that the
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* following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the
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* following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the
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* following disclaimer in the documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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* THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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package org.codehaus.janino.util;
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/**
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* An object that produces some {@link java.lang.Object} each time the
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* {@link #produce()} method is invoked. This behavior is similar to the
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* {@link java.util.Iterator}, but is represented by one single
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* {@link #produce()} method as opposed to {@link java.util.Iterator}'s
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* two methods {@link java.util.Iterator#hasNext()} and
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* {@link java.util.Iterator#next()}. This simplifies the implementation of
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* certain complex iterations.
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*
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* @param <T> The type of the products
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* @see org.codehaus.janino.util.iterator.DirectoryIterator
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* @see org.codehaus.janino.util.iterator.ProducerIterator
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*/
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public
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interface Producer<T> {
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/**
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* Produce the next object.
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*
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* @return the next object or <code>null</code> to indicate that no more objects can be produced
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*/
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T produce();
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}
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