Mercurial > hg > Members > tatsuki > bbs
diff src/main/java/jp/ac/u_ryukyu/ie/cr/bbs/local/IterableConverter.java @ 1:64a72a7a0491
add local bbs
author | tatsuki |
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date | Mon, 27 Jun 2016 04:24:25 +0900 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/main/java/jp/ac/u_ryukyu/ie/cr/bbs/local/IterableConverter.java Mon Jun 27 04:24:25 2016 +0900 @@ -0,0 +1,52 @@ +package jp.ac.u_ryukyu.ie.cr.bbs.local; + +import java.util.Iterator; + +public class IterableConverter<A,B> implements Iterable<A> +{ + private final Iterable<B> iterable; + private final Converter<A,B> converter; + + public IterableConverter(Iterable<B> _iterable,Converter<A,B> _converter) + { + iterable = _iterable; + converter = _converter; + } + + public Iterator<A> iterator() + { + return new IteratorConverter<A,B>(iterable.iterator(),converter); + } + + private static final class IteratorConverter<A,B> implements Iterator<A> + { + private final Iterator<B> iterator; + private final Converter<A,B> converter; + + public IteratorConverter(Iterator<B> _iterator,Converter<A,B> _converter) + { + iterator = _iterator; + converter = _converter; + } + + public boolean hasNext() + { + return iterator.hasNext(); + } + + public A next() + { + return converter.conv(iterator.next()); + } + + public void remove() + { + iterator.remove(); + } + } + + public static interface Converter<A,B> + { + public A conv(B _b); + } +}